( 12 ) United States Patent

Transcription

1 THI NANIULUH TNICI UNTUK US B1 ( 12 ) United States Patent Hashimoto et al. ( 54 ) COAXIAL CABLE CONNECTOR AND METHOD OF USE THEREOF ( 71 ) Applicant : DAI - ICHI SEIKO CO., LTD., Kyoto ( JP ) ( 72 ) Inventors : Yoichi Hashimoto, Tokyo ( JP ); Kenichi Yotsutani, Tokyo ( JP ) ( 10 ) Patent No. : US 9, 941, 606 B1 ( 45 ) Date of Patent : Apr. 10, 2018 ( 56 ) References Cited U. S. PATENT DOCUMENTS 6, 607, 400 B1 * 8 / 2003 Ko HOIR 24 / / 578 7, 351, 067 B2 * 4 / 2008 Chen HOIR 9 / / 581 7, 445, 458 B1 * 11 / 2008 Yamane HO1R 4 / / 63 8, 876, 552 B2 * 11 / 2014 Taguchi HOIR 24 / / 582 ( 73 ) Assignee : DAI - ICHI SEIKO CO., LTD., Kyoto ( JP ) FOREIGN PATENT DOCUMENTS ( * ) Notice : Subject to any disclaimer, the term of this H patent is extended or adjusted under 35 JP A U. S. C. 154 ( b ) by 0 days. ( 21 ) Appl. No. : 15 / 679, 384 ( 22 ) Filed : Aug. 17, 2017 ( 30 ) Foreign Application Priority Data Oct. 6, 2016 ( JP ) ( 51 ) Int. Cl. HOIR 9 / 05 ( ) HOIR 24 / 54 ( ) ( 52 ) U. S. CI. CPC HOIR 9 / 0515 ( ) ; HOIR 24 / 545 ( ) ( 58 ) Field of Classification Search CPC HOIR 24 / 58 ; HOIR 13 / 53 ; HOIR 17 / 12 ; HOIR 9 / 0518 USPC / 669, 668, 934, 578, 585 See application file for complete search history / / 2006 * cited by examiner Primary Examiner Phuong Chi T Nguyen ( 74 ) Attorney, Agent, or Firm Studebaker & Brackett PC ( 57 ) ABSTRACT A coaxial cable connector comprises a signal contact mem ber having an inner conductor connecting portion, a ground ing contact member, and an insulating housing for support ing the signal contact member and the grounding contact member in a condition of mutual isolation, wherein the insulating housing is provided with a concavity which has a bottom on which the inner conductor connecting portion of the signal contact member is placed and an opening through which the inner conductor of the coaxial cable is caused to come into contact with the inner conductor connecting portion of the signal contact member placed on the bottom of the concavity and is operative to allow an ultrasonic vibration horn to be put into the concavity through the opening of the concavity for applying ultrasonic vibrations to the inner conductor of the coaxial cable put in contact with the inner conductor connecting portion of the signal contact member. 9 Claims, 9 Drawing Sheets b a 13a - 16a 13a 18c 18b? 18a 16a x a / 31c 31a 31bX

2 atent Apr. 10, 2018 Sheet 1 of 9 US 9, 941, 606 B1 FIG b 18a 18a a a 16 AK 1 FIG VI _ 1 v TAT -. 1 SA 180 / 18a

3 atent Apr. 10, 2018 Sheet 2 of 9 US 9, 941, 606 B1 FIG. 3 13a 13a / a ( b 28a Nt 28 28b FIG. 4 13a 13a - 20

4 atent Apr. 10, 2018 Sheet 3 of 9 US 9, 941, 606 B1 FIG. 5???????????? + 18C 18b 18a 18HL Z ar FIG am. 17 B î LLAMA

5 atent Apr. 10, 2018 Sheet 4 of 9 US 9, 941, 606 B1 FIG. 7 18b 1 t 18a 18 13a - 16a 13a W 16a / 14 /

6 atent Apr. 10, 2018 Sheet 5 of 9 US 9, 941, 606 B1 FIG. 8 18C mente ix. 180 AT a FIG. 9 * 18a He 18b 18a / 25 / Pazam LUKE ALTIKULTET a 31b

7 U. S. Patent Apr. 10, 2018 Sheet 6 of9 US , 606 B1 FIG ww XL?? a / 12? 25? / a 731b i X 31c hhhhhhh 8? FIG. 11? D " +????? to ? ( 31b ) 17

8 U. S. Patent Apr. 10, 2018 Sheet 7 of 9 US 9, 941, 606 B1 FIG m an 25 / TAZZ TIRAS ö # a a 18b 180 FIG À 30 18a teh 18C 34.

9 atent Apr. 10, 2018 Sheet 8 of 9 US 9, 941, 606 B1 FIG a L IN FIG. 15 og 56 sa 52 56a

10 atent Apr. 10, 2018 Sheet 9 0f9 US 9, 941, 606 B1 FIG. 16? 2? 50 56?? 717 / 18a en? 1? 18c 34

11 US 9, 941, 606 B1 COAXIAL CABLE CONNECTOR AND grounding contact member of the coaxial cable connector. METHOD OF USE THEREOF Under such a situation, it is desired especially to put the inner conductor of the coaxial cable in a condition of BACKGROUND OF THE INVENTION superior electrical connection with the signal contact mem 5 ber of the coaxial cable connector because the quality of the Field of the Invention connecting condition between the inner conductor of the coaxial cable and the signal contact member of the coaxial The present invention relates generally to a coaxial cable cable influences directly transmission characteristics of the connector, and more particularly to an improvement in a high - frequency signal transmitted through the coaxial cable. coaxial cable connector which has a signal contact member 10 There have been previously proposed various coaxial and a grounding contact member insulated from each other cable connectors, with each of which the inner conductor of to be connected respectively with an inner conductor and an the coaxial cable is connected with the signal contact outer conductor insulated from each other of a coaxial cable member of the coaxial cable connector by means of solder which is provided, in addition to the inner conductor and the ing, as disclosed in, for example, the Japanese patent appli outer conductor, with an internal insulator put between the 15 cation published before substantial examination under pub inner conductor and the outer conductor for surrounding the lication number HEI ( hereinafter, referred to as inner conductor and an external insulator surrounding the published patent document 1 ). Further, there has been also outer conductor, and relates further to a method of connect previously proposed, as a possible approach, a general ing the coaxial cable with the coaxial cable connector. concept of adopting ultrasonic welding or electric welding 20 instead of the soldering for connecting the inner conductor Description of the Prior Art Including Information of the coaxial cable with the signal contact member of the Disclosed Under 37 CFR and 37 CFR coaxial cable connector, as disclosed in, for example, the Japanese patent application published before substantial There has been often utilized a coaxial cable having an examination under publication number ( here inner conductor, an outer conductor, an internal insulator put 25 inafter, referred to as published patent document 2 ). between the inner conductor and the outer conductor for The previously proposed coaxial cable connector ( an surrounding the inner conductor and an external insulator electrical connector ( 20 ) disclosed in the published patent provided for surrounding the outer conductor for transmit document 1 comprises a signal contact member ( a contact ting a high - frequency signal between electrical parts, elec - ing terminal ( 1 )) having an inner conductor connecting tric equipments or electronic apparatus. The high - frequency 30 portion ( a wire connecting portion ( 2 )) with which an inner signal transmitted through the coaxial cable is put in a conductor ( a core conductor ( 12 )) of a coaxial cable ( a cable condition of electro - magnetic shield so as to be inactive to ( 10 )) is connected and a pair of engaging portions ( contact leak out from the inner conductor or to prevent electro - ing portions ( 4 )) each extended from the inner conductor magnetic noises from mixing thereinto from the outside. For connecting portion, a grounding contact member ( an outer example, the coaxial cable is connected with a circuit board 35 conductor ( 21 ) having an annular coupling portion ( a on which high - frequency signals are dealt with and the tubular portion ( 23 )) and a shell portion ( an arm portion high - frequency signal is transmitted through the coaxial ( 24 )) extended from the annular coupling portion to be cable from the circuit board to the outside or from the bendable, and an insulating housing ( an insulator ( 22 ) outside to the circuit board under the condition of electro - having a receptive portion ( 26 ) positioned on the inside of magnetic shield. 40 the annular coupling portion for receiving the engaging For connecting the coaxial cable with the circuit board, a portions therein and a lid portion ( 27 ) extended from the coaxial cable connector is mounted on an end of the coaxial receptive portion ( 26 ) to be bendable for supporting the cable to be coupled with a mating coaxial connector fixed to signal contact member and the grounding contact member in the circuit board. The coaxial cable connector which is to be a condition of mutual isolation. A part of the inner conductor mounted on the end of the coaxial cable has a signal contact 45 connecting portion of the signal contact member is provided member with which the inner conductor of the coaxial cable with a groove ( 6 ) having a V - shaped portion ( 6A ) and a is electrically connected and a grounding contact member roundish portion ( 6B ) for engaging with the inner conductor with which the outer conductor of the coaxial cable is of the coaxial cable. electrically connected. The mating coaxial connector has a When the inner conductor of the coaxial cable is electri central contact member as a signal contact member to which 50 cally connected with the inner conductor connecting portion the high - frequency signal dealt with on the circuit board is of the signal contact member, first, the inner conductor of the supplied and an outer contact member as a grounding coaxial cable is put in the groove provided on the inner contact member provided for surrounding the central contact conductor connecting portion of the signal contact member member to be supplied with a ground potential. When the so as to be guided by the V - shaped portion of the groove for coaxial cable connector is coupled with the mating coaxial 55 entering into the roundish portion of the groove. Then, the connector on the circuit board, the grounding contact mem - groove is plastically deformed to be narrowed by means of ber of the coaxial cable connector engages with the outer a predetermined tool and the inner conductor of the coaxial contact member of the mating coaxial connector to be cable is tightly held by the groove deformed plastically. electrically connected with the same and the signal contact After that, the inner conductor of the coaxial cable, an end member of the coaxial cable connector comes into press - 60 portion of which is appressed to an outer surface of the inner contact with the central contact member of the mating conductor connecting portion of the signal contact member, coaxial connector to be electrically connected with the same. is soldered to be electrically connected with the inner For mounting the coaxial cable connector on the end of conductor connecting portion of the signal contact member. the coaxial cable as described above, it is required to connect Further, after the inner conductor of the coaxial cable is the inner conductor of the coaxial cable with the signal 65 connected with the inner conductor connecting portion of contact member of the coaxial cable connector and also to the signal contact member by means of soldering, the shell connect the outer conductor of the coaxial cable with the portion of the grounding contact member is bent, together

12 with the lid portion of the insulating housing, toward the US 9, 941, 606 B1 result in that the coaxial cable cannot be connected suitably coaxial cable having the inner conductor connected with the and stably with the coaxial cable connector. inner conductor connecting portion of the signal contact Then, the description in the published patent document 2 member and comes to engagement with an outer conductor that it is possible for the coaxial cable connector to connect ( a shielding conductor ( 13 )) of the coaxial cable to be 5 electrically the inner conductor of the coaxial cable with the mechanically fixed to the coaxial cable, so that the outer inner conductor connecting portion of the signal contact conductor of the coaxial cable is electrically connected with member by means of ultrasonic welding or electric welding, the grounding contact member. is no more than an opinion of possibility of ultrasonic Another previously proposed coaxial cable connector ( a welding or electric welding as conceivable means for con coaxial connector ( 1 )) disclosed in the published patent 10 necting the inner conductor of the coaxial cable with the document 2 comprises a signal contact member ( a terminal inner conductor connecting portion of the signal contact ( 2 )) having an inner conductor connecting portion ( a con member, and any concrete or embodied structure, means or method for putting the ultrasonic welding or electric welding necting portion ( 2a ) with which an inner conductor ( a core conductor ( 21 )) of a coaxial cable ( 20 ) is connected and a into practice is not disclosed in the published patent docu pair of engaging portions ( contacting portions ( 2b )) each 415 ment 2. For example, for connecting the inner conductor of the coaxial cable with the inner conductor connecting por extended from the inner conductor connecting portion, a tion of the signal contact member by means of ultrasonic grounding contact member ( an outer conductor 4 )) having welding, it is essentially required to provide an ultrasonic an annular coupling portion ( a tubular portion ( 4a )) and a vibration horn for applying ultrasonic vibrations at least to shell portion ( an outer lid portion ( 4b )) extended from the 20 the inner conductor of the coaxial cable and the ultrasonic annular coupling portion to be bendable, and an insulating vibration horn has usually its three dimensions larger than a housing ( an insulator ( 3 ) ) provided for supporting the signal diameter of the inner conductor of the coaxial cable and a contact member and the grounding contact member in a width of a part of the inner conductor connecting portion of condition of mutual isolation. In the published patent docu - the signal contact member with which the inner conductor of ment 2 disclosing such a coaxial cable connector, namely, 25 the coaxial cable is connected. However, such a practical the coaxial connector ( 1 ) as described above, it is disclosed configuration as clarifying a shape and size of the ultrasonic that it is possible for the coaxial connector ( 1 ) to connect vibration horn and arrangement of the ultrasonic vibration electrically the inner conductor of the coaxial cable with the horn in relation to the inner conductor of the coaxial cable inner conductor connecting portion of the signal contact and the inner conductor connecting portion of the signal member by means of ultrasonic welding or electric welding. 30 contact member, is not shown nor suggested in the published The coaxial cable connector proposed previously as dis - patent document 2. Accordingly, on the occasion of con closed in the published patent document 1, in which such a necting the inner conductor of the coaxial cable with the connection manner that the inner conductor of the coaxial inner conductor connecting portion of the signal contact cable is tightly held by the groove provided on the inner and then soldered to the inner conductor connecting portion member, it is impossible to put the ultrasonic welding into conductor connecting portion of the signal contact member 35 practice on the strength of the published patent document 2. of the signal contact member to be electrically connected BRIEF SUMMARY OF THE INVENTION with the same is executed, is accompanied with disadvan tages mentioned below. Accordingly, a first aspect of the present invention pro That is, in the coaxial cable connector proposed previ - 40 vides a coaxial cable connector used for coupling with a ously as disclosed in the published patent document 1, after mating coaxial connector fixed to a circuit board, which the inner conductor of the coaxial cable has been soldered to comprises a signal contact member having an inner conduc the inner conductor connecting portion of the signal contact tor connecting portion with which an inner conductor of a member, the solder which had been melted once and then coaxial cable is to be connected, a grounding contact mem has coagulated remains at a junction wherein the inner 45 ber with which an outer conductor of the coaxial cable is to conductor of the coaxial cable has been connected with the be connected, and an insulating housing for supporting the inner conductor connecting portion of the signal contact signal contact member and the grounding contact member in member, so that a space occupied with the junction becomes a condition of mutual isolation, and which avoids the larger in capacity to expand undesirably and it is very likely aforementioned problems and disadvantages encountered that the expanded junction obstructs reduction in height of 50 with the prior art. the coaxial cable connector which is generally required. A second aspect of the present invention provides a Further, it is very difficult in the coaxial cable connector to coaxial cable connector used for coupling with a mating control accurately a proper quantity of the solder at the time coaxial connector fixed to a circuit board, which comprises of soldering the inner conductor of the coaxial cable to the a signal contact member having an inner conductor connect inner conductor connecting portion of the signal contact 55 ing portion with which an inner conductor of a coaxial cable member and therefore it is likely that the inner conductor of is to be connected, a grounding contact member with which the coaxial cable is connected to the inner conductor con - an outer conductor of the coaxial cable is to be connected, necting portion of the signal contact member with the solder and an insulating housing for supporting the signal contact of insufficient or excessive quantity, so that a proper solder - member and the grounding contact member in a condition of ing cannot be obtained between the inner conductor of the 60 mutual isolation, which avoids disadvantages in accompany coaxial cable and the inner conductor connecting portion of with soldering for connecting electrically the inner conduc the signal contact member. Under a condition wherein the tor of the coaxial cable with the inner conductor connecting proper soldering is not obtained between the inner conductor portion of the signal contact member. of the coaxial cable and the inner conductor connecting A third aspect of the present invention provides a coaxial portion of the signal contact member, a characteristic imped - 65 cable connector used for coupling with a mating coaxial ance of the coaxial cable connector mounted on an end connector fixed to a circuit board, which comprises a signal portion of the coaxial cable cannot be correctly kept and this contact member having an inner conductor connecting por

13 US 9, 941, 606 B1 tion with which an inner conductor of a coaxial cable is to outside signal contact member, a grounding contact member be connected, a grounding contact member with which an having an annular coupling portion for coupling with an outer conductor of the coaxial cable is to be connected, and outside grounding contact member and a shell portion an insulating housing for supporting the signal contact extended from the annular coupling portion to be connected member and the grounding contact member in a condition of 5 with an outer conductor of the coaxial cable, and an insu mutual isolation, in which the inner conductor of the coaxial lating housing for supporting the signal contact member and cable is able to be suitably and surely connected electrically the grounding contact member in a condition of mutual with the inner conductor connecting portion of the signal isolation, wherein the insulating housing is provided with a contact member by means of ultrasonic joining under d a concavity having a bottom on which the inner conductor condition wherein the coaxial cable connector is subjected to 10 connecting portion of the signal contact member is placed reduction in its height. and an opening through which the inner conductor of the A forth aspect of the present invention provides a method coaxial cable is caused to come into contact with the inner of connecting a coaxial cable which has an inner conductor, conductor connecting portion of the signal contact member an outer conductor, an internal insulator put between the placed on the bottom of the concavity, and the concavity inner conductor and the outer conductor for surrounding the 15 provided on the insulating housing is operative to allow an inner conductor and an external insulator surrounding the ultrasonic vibration horn to be put into the concavity through outer conductor, with a coaxial cable connector which the opening of the concavity for applying ultrasonic vibra comprises a signal contact member having an inner conduc t ions to the inner conductor of the coaxial cable in contact tor connecting portion with which the inner conductor of the with the inner conductor connecting portion of the signal coaxial cable is to be connected, a grounding contact mem - 20 contact member placed on the bottom of the concavity, ber with which the outer conductor of the coaxial cable is to causing the inner conductor of the coaxial cable to come into be connected and an insulating housing for supporting the contact with the inner conductor connecting portion of the signal contact member and the grounding contact member in signal contact member placed on the bottom of the concavity a condition of mutual isolation, with which the inner con provided on the insulating housing through the opening of ductor of the coaxial cable is able to be suitably and surely 25 the concavity, putting the ultrasonic vibration horn into the connected electrically with the inner conductor connecting concavity through the opening of the concavity so as to portion of the signal contact member of the coaxial cable come into contact with the inner conductor of the coaxial connector by means of ultrasonic joining. cable on the inner conductor connecting portion of the signal According to the first to third aspects of the present contact member, causing the ultrasonic vibration horn to invention, there is provided a coaxial cable connector ( here - 30 apply the ultrasonic vibrations to the inner conductor of the inafter, referred to as a coaxial cable connector according to coaxial cable so that the inner conductor of the coaxial cable the present invention ), which comprises a signal contact is connected electrically with the inner conductor connecting member having an inner conductor connecting portion with portion of the signal contact member by means of ultrasonic which an inner conductor of a coaxial cable is to be joining, and causing the shell portion of the grounding connected and a contact engaging portion extended from the 35 contact member to come into contact with the outer con inner conductor connecting portion for engaging with an ductor of the coaxial cable so that the outer conductor of the outside signal contact member, a grounding contact member coaxial cable is electrically connected with the shell portion having an annular coupling portion for coupling with an of the grounding contact member. outside grounding contact member and a shell portion The above mentioned coaxial cable connector according extended from the annular coupling portion to be connected 40 to the present invention is mounted on an end of the coaxial with an outer conductor of the coaxial cable, and an insu - cable to be put in practical use. At that time, the inner lating housing for supporting the signal contact member and conductor of the coaxial cable is caused to come into contact the grounding contact member in a condition of mutual with the inner conductor connecting portion of the signal isolation, wherein the insulating housing is provided with a contact member placed on the bottom of the concavity concavity having a bottom on which the inner conductor 45 provided on the insulating housing through the opening of connecting portion of the signal contact member is placed the concavity and the ultrasonic vibration horn is put into the and an opening through which the inner conductor of the concavity through the opening of the concavity so as to coaxial cable is caused to come into contact with the inner come into contact with the inner conductor of the coaxial conductor connecting portion of the signal contact member cable placed on the inner conductor connecting portion of placed on the bottom of the concavity, and the concavity 50 the signal contact member. Then, the ultrasonic vibrations provided on the insulating housing is operative to allow an are applied from the ultrasonic vibration horn to the inner ultrasonic vibration horn to be put into the concavity through conductor of the coaxial cable so that the inner conductor of the opening of the concavity for applying ultrasonic vibra - the coaxial cable is connected electrically with the inner tions to the inner conductor of the coaxial cable put in conductor connecting portion of the signal contact member, contact with the inner conductor connecting portion of the 55 and finally, the shell portion of the grounding contact signal contact member placed on the bottom of the concav - member is caused to come into contact with the outer ity. conductor of the coaxial cable so that the outer conductor of Further, according to the fourth aspect of the present the coaxial cable is electrically connected with the shell invention, there is provided a method of connecting a portion of the grounding contact member. coaxial cable with a coaxial cable connector ( hereinafter, 60 In one embodiment of coaxial cable connector according referred to as a coaxial cable connecting method according to the present invention, the insulating housing is also to the present invention ), which comprises the steps of provided, in addition to the concavity, with a shaping providing an electrical cable connector comprising a signal cond concavity adjacent to the concavity to have a bottom on contact member having an inner conductor connecting por - which the inner conductor connecting portion of the signal tion with which an inner conductor of a coaxial cable is to 65 contact member is placed. The shaping concavity has further be connected and a contact engaging portion extended from a guiding opening through which the inner conductor of the the inner conductor connecting portion for engaging with an coaxial cable caused to come into contact with the inner

14 US 9, 941, 606 B1 conductor connecting portion of the signal contact member dance with the present invention, when the coaxial cable placed on the bottom of the shaping concavity and is connector is mounted on the end of the coaxial cable, under operative to shape the inner conductor of the coaxial cable the situation wherein the inner conductor of the coaxial coming into contact with the inner conductor connecting cable is caused to come into contact with the inner conductor portion of the signal contact member placed on the bottom 5 connecting portion of the signal contact member placed on of the shaping concavity through the guiding opening. With such an embodiment of coaxial cable connector the bottom of the concavity provided on the insulating housing of the coaxial cable connector through the opening according to the present invention as mentioned above, the of the concavity and the ultrasonic vibration horn is put into shaping concavity is operative to shape a top end of the inner the concavity through the opening of the concavity so as to conductor of the coaxial cable coming into contact with the 10 come into contact with the inner conductor of the coaxial inner conductor connecting portion of the signal contact cable on the inner conductor connecting portion of the signal member placed on the bottom of the shaping concavity, and contact member, the ultrasonic vibrations are applied from the concavity is operative to allow the ultrasonic vibration the ultrasonic vibration horn to the inner conductor of the horn to be put into the concavity through the opening for coaxial cable so that the inner conductor of the coaxial cable applying the ultrasonic vibrations to an inner portion extend - 15 is connected electrically with the inner conductor connecting ing to the top end of the inner conductor of the coaxial cable. portion of the signal contact member by means of ultrasonic With the above mentioned coaxial cable connecting joining method according to the present invention, under a situation On that occasion, since the concavity having the opening wherein the electrical cable connector which has the insu - is provided on the insulating housing of the coaxial cable lating housing provided for supporting the signal contact 20 connector and operative to allow the ultrasonic vibration member and the grounding contact member in the condition of mutual isolation and provided with the concavity having horn to be put into the concavity through the opening for applying the ultrasonic vibrations to the inner conductor of the bottom on which the inner conductor connecting portion the coaxial cable which is in contact with the inner conduc of the signal contact member is placed and the opening tor connecting portion of the signal contact member placed through which the inner conductor of the coaxial cable is 25 on the bottom of the concavity, the inner conductor of the caused to come into contact with the inner conductor con - coaxial cable put in contact with the inner conductor con necting portion of the signal contact member placed on the necting portion of the signal contact member is supplied bottom of the concavity, is prepared in advance, the inner with the ultrasonic vibrations from the ultrasonic vibration conductor of the coaxial cable is caused to come into contact horn which is put in direct contact with the inner conductor with the inner conductor connecting portion of the signal 30 of the coaxial cable and thereby the inner conductor of the contact member placed on the bottom of the concavity coaxial cable is electrically connected with the inner con provided on the insulating housing through the opening of the concavity and further the ultrasonic vibration horn is put into the concavity through the opening of the concavity so ductor connecting portion of the signal contact member by means of ultrasonic joining. As a result, the coaxial cable connector is able to avoid disadvantages in accompany with as to come into contact with the inner conductor of the 35 soldering for connecting electrically the inner conductor of coaxial cable on the inner conductor connecting portion of the coaxial cable with the inner conductor connecting por the signal contact member. Then, the ultrasonic vibrations tion of the signal contact member and the inner conductor of are applied from the ultrasonic vibration horn to the inner the coaxial cable is able to be suitably and surely connected conductor of the coaxial cable so that the inner conductor of electrically with the inner conductor connecting portion of the coaxial cable is connected electrically with the inner 40 the signal contact member by means of ultrasonic joining conductor connecting portion of the signal contact member under a condition wherein the coaxial cable connector is by means of ultrasonic joining and in addition the shell subjected to reduction in its height. portion of the grounding contact member is caused to come Further, with the embodiment of coaxial cable connector into contact with the outer conductor of the coaxial cable so according to the present invention or the embodiment of that the outer conductor of the coaxial cable is electrically 45 coaxial cable connecting method according to the present connected with the shell portion of the grounding contact invention, under the situation wherein the insulating housing member. of the coaxial cable connector is provided, in addition to the In one embodiment of coaxial cable connecting method concavity, with the shaping concavity adjacent to the con according to the present invention, under a situation wherein cavity to have the bottom on which the inner conductor the insulating housing of the coaxial cable connector is 50 connecting portion of the signal contact member is placed provided, in addition to the concavity, with a shaping and the shaping concavity has further the introducing open concavity adjacent to the concavity to have a bottom on ing through which the inner conductor of the coaxial cable which the inner conductor connecting portion of the signal is caused to come into contact with the inner conductor contact member is placed and the shaping concavity has connecting portion of the signal contact member placed on further an introducing opening through which the inner 55 the bottom of the shaping concavity, the inner conductor of conductor of the coaxial cable is caused to come into contact the coaxial cable coming into contact with the inner con with the inner conductor connecting portion of the signal ductor connecting portion of the signal contact member contact member placed on the bottom of the shaping con - placed on the bottom of the shaping concavity through the cavity, the inner conductor of the coaxial cable coming into introducing opening is shaped into the configuration suitable contact with the inner conductor connecting portion of the 60 for contacting with the inner conductor connecting portion signal contact member placed on the bottom of the shaping of the signal contact member by the shaping concavity and concavity through the introducing opening is shaped into a then the inner conductor of the coaxial cable put in contact configuration suitable for contacting with the inner conduc - with the inner conductor connecting portion of the signal tor connecting portion of the signal contact member by the contact member placed on the bottom of the concavity shaping concavity. 65 through the opening is connected electrically with the inner With the coaxial cable connector or the coaxial cable conductor connecting portion of the signal contact member connecting method thus constituted or proceeded in accor - by means of ultrasonic joining. Therefore, the inner con

15 US 9, 941, 606 B1 10 ductor of the coaxial cable is able to be further more suitably FIG. 16 is a schematic perspective view showing the and surely connected electrically with the inner conductor embodiment of coaxial cable connector according to the connecting portion of the signal contact member by means present invention coupled with the example of the mating of ultrasonic joining. coaxial connector mounted on the circuit board. The above, and other objects, features and advantages of 5 the present invention will become apparent from the fol DETAILED DESCRIPTION OF THE lowing detailed description taken in conjunction with the INVENTION accompanying drawings. A group of FIG. 1 to FIG. 6 shows an embodiment of BRIEF DESCRIPTION OF THE SEVERAL 10 coaxial cable connector according to the present invention. VIEWS OF THE DRAWINGS Referring to FIG. 1 to FIG. 6, a coaxial cable connector 10, which constitutes the embodiment of coaxial cable FIG. 1 is a schematic perspective view showing an connector according to the present invention, is used to be embodiment of coaxial cable connector according to the connected with an end portion of a coaxial cable having an present invention ; 15 inner conductor and an outer conductor, an example of which is shown as a coaxial cable 30 in FIG. 7 explained FIG. 2 is a schematic plan view showing the embodiment of coaxial cable connector according to the present inven later, and coupled with a mating coaxial connector, an example of which is shown as a mating coaxial connector 50 tion ; in FIG. 15 explained later, mounted on a surface of a circuit FIG. 3 is a schematic top perspective view showing an 20 board on which various electrical parts are mounted. example of an insulating housing to be employed in the The coaxial cable connector 10 is provided with, as main embodiment of coaxial cable connector according to the constitutional elements, a signal contact member 11 made of present invention, together with a signal contact member conductive material, a grounding contact member 12 made supported by the insulating housing ; of conductive material, and an insulating housing 13 made FIG. 4 is a schematic bottom perspective view showing an 25 of insulator, such as a plastics, for supporting the signal example of an insulating housing to be employed in the contact member 11 and the grounding contact member 12 in embodiment of coaxial cable connector according to the such a manner that the signal contact member 11 and the present invention, together with a signal contact member grounding contact member 12 are isolated from each other. supported by the insulating housing ; The signal contact member 11 is to be electrically connected FIG. 5 is a schematic cross sectional view showing a cross 30 with the inner conductor of the coaxial cable exposed at the end of the coaxial cable and the grounding contact member section taken along line V - V on FIG. 2 ; FIG. 6 is a schematic enlarged cross sectional view 12 is to be electrically connected with the outer conductor of showing a part of a cross section taken along line VI - VI on the coaxial cable exposed also at the end of the coaxial cable. FIG. 2 ; The signal contact member 11 of the coaxial cable con FIG. 7 is a schematic perspective view showing a process 35 nector 10 has an inner conductor connecting portion 14 with of mounting the embodiment of coaxial cable connector which the inner conductor of the coaxial cable is to be according to the present invention on an end portion of a connected and a contact engaging portion 15 extended from coaxial cable ; the inner conductor connecting portion 14 for engaging with FIG. 8 is a schematic plan view showing the process of an outside signal contact member, as shown in FIG. 4. The mounting the embodiment of coaxial cable connector 40 inner conductor connecting portion 14 is buried in the according to the present invention on the end portion of the insulating housing 13 by means of insert molding, as shown coaxial cable ; in FIG. 5, in such a manner that a portion of surface of the FIG. 9 is a schematic cross sectional view showing a cross inner conductor connecting portion 14 is formed into a flat section taken along line IX - IX on FIG. 8 ; plate piece looking out of the outside from the insulating FIG. 10 is a schematic cross sectional view showing a 45 housing 13. The contact engaging portion 15 is formed into process of mounting the embodiment of coaxial cable con - a pair of resilient plate pieces facing each other and elon nector according to the present invention on the end portion gating in an inside of the insulating housing 13 from an end of the coaxial cable ; portion of the inner conductor connecting portion 14 so as to FIG. 11 is a schematic enlarged cross sectional view cause a top end of each of the resilient plate pieces to look showing a part of a cross section taken along line XI - XI on 50 out on the outside of the insulating housing 13, as shown in FIG. 10 ; FIG. 4 and FIG. 5. The flat plate piece of the inner conductor FIG. 12 is a schematic cross sectional view showing the connecting portion 14 looking out of the outside from the embodiment of coaxial cable connector according to the insulating housing 13 is bent down from a portion of the present invention mounted on the end portion of the coaxial inner conductor connecting portion 14 buried in the insu cable ; 55 lating housing 13, as shown in FIG. 5. FIG. 13 is a schematic top perspective view showing the The grounding contact member 12 of the coaxial cable embodiment of coaxial cable connector according to the connector 10 has an annular coupling portion 16, a couple of present invention mounted on the end portion of the coaxial flat plate portions 17 each extended from the annular cou cable ; pling portion 16, and a shell portion 18 extended from the FIG. 14 is a schematic bottom perspective view showing 60 annular coupling portion 16 to be bendable and operative to the embodiment of coaxial cable connector according to the be connected with the outer conductor of the coaxial cable. present invention mounted on the end portion of the coaxial The annular coupling portion 16 and the flat plate portions cable ; 17 are operative to accommodate the major part of the FIG. 15 is a schematic perspective view showing an insulating housing 13. The shell portion 18 is operative to example of a mating coaxial connector mounted on a circuit 65 board, with which the embodiment of coaxial cable connec - cover the annular coupling portion 16, the flat plate portions 17 and the insulating housing 13 accommodated with the tor according to the present invention is to be coupled ; and annular coupling portion 16 and the flat plate portions 17

16 when the shell portion 18 is bent toward the annular cou pling portion 16 and the flat plate portions 17. US 9, 941, 606 B1 thereof to be opposite to the shaping concavity 27 via the concavity 25 with a bottom portion thereof on which the The annular coupling portion 16 of the grounding contact inner conductor connecting portion 14 of the signal contact member 12 is provided thereon with a plurality of engaging member 11 is placed. Each of the shaping concavity 27 and edged recesses 16a in each of which one of engaging 5 the guiding concavity 28 has an introducing opening formed projections 13a provided on the insulating housing 13 is put to be opposite to the bottom portion for allowing the inner to engage with the annular coupling portion 16. With the conductor of the coaxial cable to come into contact with the engaging projections 13a of the insulating housing 13 which inner conductor connecting portion 14 of the signal contact are put in the engaging edged recesses 16a on the annular member 11 placed on the bottom portion of the shaping coupling portion 16 of the grounding contact member concavity 27 or the guiding concavity 28. respectively to engage with the annular coupling portion 16, Comparing the concavity 25 with each of the shaping the grounding contact member 12 is supported by the concavity 27 and the guiding concavity 28, the overall insulating housing 13. As a result, the insulating housing 13 dimension of the concavity 25 including the opening is supports the signal contact member 11 which is arranged on larger than the overall dimension of each of the shaping the inside of the insulating housing 13 and the grounding 15 concavity 27 and the guiding concavity 28 each including contact member 12, a major part of which is arranged at the the introducing opening. outside of the insulating housing 13, in a condition of mutual The concavity 25 has further a pair of slant internal isolation. surfaces 25a and 25b which are opposite to each other so The shell portion 18 of the grounding contact member 12 that a distance between the slant internal surfaces 25a and comes into contact with the outer conductor of the coaxial 20 25b increases gradually from the bottom of the concavity 25 cable, the inner conductor of which is connected with the to the opening of the concavity 25. The concavity 25 thus inner conductor connecting portion 14 of the signal contact member 11 when the shell portion 18 of the grounding contact member 12 is bent toward the annular coupling constituted is operative to allow an ultrasonic vibration horn for applying ultrasonic vibrations to the inner conductor of the coaxial cable put in contact with the inner conductor portion 16 and the flat plate portions 17. The shell portion connecting portion 14 of the signal contact member 11 of the grounding contact member 12 is provided with a pair placed on the bottom of the concavity 25 to be put into the of first bendable engaging portions 18a which are operative concavity 25 through the opening of the concavity 25 with to be bent to approach each other for engaging with the flat guidance by the slant internal surfaces 25a and 25b as plate portions 17, a pair of second bendable engaging required. portions 18b which are operative to be bent to approach each 30 The shaping concavity 27 has a pair of slant internal other for engaging with the outer conductor of the coaxial cable having the inner conductor connected with the inner conductor connecting portion 14 of the signal contact mem - surfaces 27a and 27b which are opposite to each other so that a distance between the slant internal surfaces 27a and 27b increases gradually from the bottom of the shaping ber 11 and a pair of third bendable engaging portions 18C concavity 27 to the introducing opening of the shaping which are operative to be bent to approach each other for 35 concavity 27 and the guiding concavity 28 has a pair of slant engaging an outer insulator of the coaxial cable having the internal surfaces 28a and 28b which are opposite to each inner conductor connected with the inner conductor con other so that a distance between the slant internal surfaces necting portion 14 of the signal contact member a and 28b increases gradually from the bottom of the As shown in each of FIG. 3 and FIG. 4, the insulating guiding concavity 28 to the introducing opening of the housing 13 of the coaxial cable connector 10 has, in addition 40 guiding concavity 28. The shaping concavity 27 is operative to the engaging projections 13a, a cylindrical portion 20, to shape the inner conductor of the coaxial cable which through the inside of which the contact engaging portion 15 comes into contact with the inner conductor connecting of the signal contact member 11 is to pass, and a cable portion 14 of the signal contact member 11 placed on the engaging portion 21 extended from the cylindrical portion bottom of the shaping concavity 27 through the introducing 20 for engaging with the inner conductor of the coaxial 45 opening by means of the slant internal surfaces 27a and 27b, cable. Under a situation wherein the grounding contact so that the inner conductor of the coaxial cable is shaped into member 12 is supported by the insulating housing 13, the the configuration suitable for contacting with the inner cylindrical portion 20 of the insulating housing 13 is put on conductor connecting portion 14 of the signal contact mem the inside of the annular coupling portion 16 of the ground ber 11. Further, the guiding concavity 28 is operative to ing contact member 12 and the cable engaging portion 21 of 50 provide the inner conductor of the coaxial cable which the insulating housing 13 is put between the flat plate comes into contact with the inner conductor connecting portions 17 of the grounding contact member 12. portion 14 of the signal contact member 11 placed on the The cable engaging portion 21 of the insulating housing bottom of the guiding concavity 28 through the introducing 13 is provided with a concavity 25 having a bottom portion opening with guidance by means of the slant internal sur thereof on which the inner conductor connecting portion faces 28a and 28b. of the signal contact member 11 is placed. The concavity 25 Under a situation wherein the signal contact member 11 has also an opening formed to be opposite to the bottom and the grounding contact member 12 are supported in the portion for allowing the inner conductor of the coaxial cable condition of mutual isolation by the insulating housing 13 to come into contact with the inner conductor connecting constituted as described above, as shown in FIG. 5 and FIG. portion 14 of the signal contact member 11 placed on the 60 6, the cylindrical portion 20 of the insulating housing 13 is bottom portion of the concavity 25. The cable engaging portion 21 of the insulating housing 13 is further provided with a shaping concavity 27 adjacent to the concavity 25 at one of opposing sides thereof with a bottom portion on put on the inside of the annular coupling portion 16 of the grounding contact member 12 and the cable engaging por tion 21 of the insulating housing 13 is put between the flat plate portions 17 of the grounding contact member 12. An which the inner conductor connecting portion 14 of the 65 end portion of the annular coupling portion 16 of the signal contact member 11 is placed and a guiding concavity grounding contact member 12 and an end portion of the 28 adjacent to the concavity 25 at the other of opposing sides cylindrical portion 20 of the insulating housing 13 sur

17 US 9, 941, 606 B rounded by the end portion of the annular coupling portion the inner conductor connecting portion 14 of the signal 16 of the grounding contact member 12 constitute a con contact member 11 placed on the bottom of the guiding nectively engaging portion of the coaxial cable connector 10 concavity 28 provided on the cable engaging portion 21 for engaging with a grounding contact member of the mating through the introducing opening of the guiding concavity 28 connector with which the coaxial cable connector 10 is 5 under the guidance by means of the slant internal surfaces coupled. 28a and 28b of the guiding concavity 28. In the cable engaging portion 21 of the insulating housing When the top end portion 31a of the inner conductor 31 13, the inner conductor connecting portion 14 of the signal contact member 11, which is buried in the insulating housing of the coaxial cable 30 is caused to come into contact with 13 by means of insert molding, for example, in the manner 10 the inner conductor connecting portion 14 of the signal that the portion of surface of the inner conductor connecting contact member 11 placed on the bottom of the shaping concavity 27 through the introducing opening of the shaping portion 14 is formed into the flat plate piece looking out of the outside from the insulating housing 13, is placed on the concavity 27, the top end portion 31a of the inner conductor bottom of each of the concavity 25, the shaping concavity which comprises a large number of fine conductive wires and the guiding concavity 28. The contact engaging o portion 15 " twisted together, for example, is shaped by the slant internal 15 of the signal contact member 11 extended from the end surfaces 27a and 27b of the shaping concavity 27, so that the portion of the inner conductor connecting portion 14 of the inner conductor 31 of the coaxial cable 30 is configured to signal contact member 11 passes through the cylindrical be suitable for contacting with the inner conductor connect portion 20 of the insulating housing 13 to cause the top end ing portion 14 of the signal contact member 11. Further, of the contact engaging portion 15 to look out of the outside 20 when the deep inner portion 31c of the inner conductor 31 of the insulating housing 13 at the end portion of the of the coaxial cable 30 is caused to come into contact with cylindrical portion 20. The top end of the contact engaging the inner conductor connecting portion 14 of the signal portion 15 thus arranged constitutes a connectively engaging contact member 11 placed on the bottom of the guiding portion of the coaxial cable connector 10 for engaging with concavity 28 through the introducing opening of the guiding a signal contact member of the mating connector with which 25 concavity 28, the deep inner portion 31c of the inner the coaxial cable connector 10 is coupled. conductor 31 is guided by the slant internal surfaces 28a and When the coaxial cable connector 10 constituted as men 28b of the guiding concavity 28 to the bottom of the guiding tioned above is mounted on the end of the coaxial cable, one concavity 28, so that each of the top end portion 31a of the embodiment of coaxial cable connecting method according inner conductor 31, the shallow inner portion 31b adjacent to the present invention is carried out for connecting the 30 to the top end portion 31a of the inner conductor 31 and the coaxial cable with the coaxial cable connector 10 in such a deep inner portion 31c adjacent to the shallow inner portion manner as described below. 31b of the inner conductor 31 is caused to contact suitably With the embodiment of coaxial cable connecting method with the inner conductor connecting portion 14 of the signal according to the present invention, in the first step, as shown contact member 11 placed on the bottom of each of the in FIG. 7, FIG. 8 and FIG. 9, an end of the coaxial cable 30, 35 shaping concavity 27, the concavity 25 and the guiding which constitutes an embodiment of coaxial cable accom - concavity 28. panied with the coaxial cable connector 10, is engaged with In the second step, as shown in FIG. 10 and FIG. 11, an the cable engaging portion 21 of the insulating housing 13 ultrasonic vibration horn 41 which generates ultrasonic employed in the coaxial cable connector 10. The coaxial vibrations by ultrasonic having frequency of, for example, cable 30 has an inner conductor 31, an internal insulator around 110 khz, is put into the concavity 25 provided on the surrounding closely the inner conductor 31, an outer con - cable engaging portion 21 of the insulating housing 13 ductor 33 surrounding closely the internal insulator 32 and through the opening of the concavity 25 to come into contact an external insulator 34 surrounding closely the outer con - with the shallow inner portion 31b of the inner conductor 31 ductor 33. The inner conductor 31 comprises a large number of the coaxial cable 30 which is in contact with the inner of fine conductive wires twisted together, for example. At 45 conductor connecting portion 14 of the signal contact mem the end of the coaxial cable 30, a part of the external ber 11, so that the ultrasonic vibration horn 41 is caused to insulator 34 is cut off so that the outer conductor 33 is contact directly with the shallow inner portion 31b of the exposed, and a part of the outer conductor 33 is cut off to inner conductor 31 of the coaxial cable 30 which is in remain partially so that the internal insulator 32 is exposed, contact with the inner conductor connecting portion 14 of and a part of the internal insulator 32 is further cut off to 50 the signal contact member 11. remain partially so that the inner conductor 31 is exposed. In the third step, the ultrasonic vibrations are applied from For engaging the end of the coaxial cable 30 with the the ultrasonic vibration horn 41 put into the concavity 25 to cable engaging portion 21 of the insulating housing 13, a top the shallow inner portion 31b of the inner conductor 31 of end portion 31a of the inner conductor 31 exposed at the end the coaxial cable 30 which is in contact with the inner of the coaxial cable 30 is caused to come into contact with 55 conductor connecting portion 14 of the signal contact mem the inner conductor connecting portion 14 of the signal ber 11 placed on the bottom of the concavity 25 so that the contact member 11 placed on the bottom of the shaping shallow inner portion 31b of the inner conductor 31 of the concavity 27 provided on the cable engaging portion 21 coaxial cable 30 is connected electrically with the inner through the introducing opening of the shaping concavity conductor connecting portion 14 of the signal contact mem 27, a shallow inner portion 31b adjacent to the top end 60 ber 11 by means of ultrasonic joining. That is, under a portion 31a of the inner conductor 31 is caused to come into condition wherein the ultrasonic vibration horn 41 is in contact with the inner conductor connecting portion 14 of direct contact with the shallow inner portion 31b of the inner the signal contact member 11 placed on the bottom of the conductor 31 of the coaxial cable 30, the shallow inner concavity 25 provided on the cable engaging portion 21 portion 31b of the inner conductor 31 of the coaxial cable 30 through the opening of the concavity 25, and a deep inner 65 is connected with the inner conductor connecting portion 14 portion 31c adjacent further to the shallow inner portion 31b of the signal contact member 11 by means of ultrasonic of the inner conductor 31 is caused to come into contact with joining and thereby the inner conductor 31 of the coaxial

18 US 9, 941, 606 B cable 30 is connected electrically with the inner conductor bottom plane portion. At a central portion of the base board connecting portion 14 of the signal contact member , a ring - shaped projection 54 is formed on the top plane Then, after the shallow inner portion 31b of the inner portion and an opening ( not shown in the drawings ) is conductor 31 of the coaxial cable 30 has been connected formed on the inside of the ring - shaped projection 54. with the inner conductor connecting portion 14 of the signal 5 The mating coaxial connector 50 is also provide with a contact member 11 by means of ultrasonic joining, the signal contact member 55 fixed to the base board 53. The ultrasonic vibration horn 41 is pulled out of the concavity 25 signal contact member 55 has a central connecting portion provided on the cable engaging portion 21 of the insulating 55a shaped into a column - like portion to elongate from the housing 13 so that the cable engaging portion 21 of the bottom plate portion of the base board 53 through the insulating housing 13 becomes independent of the ultrasonic 10 opening formed on the inside of the ring - shaped projection vibration horn to the top plate portion of the base board 53 and a signal In the fourth step, the shell portion 18 of the grounding connecting portion ( not shown in the drawings ) provided on contact member 12 is bent toward the annular coupling the bottom plate portion of the base board 53 to elongate portion 16 and the flat plate portions 17 of the grounding from the central connecting portion 55a to the outside of the contact member 12 so as to cover the annular coupling 15 base board 53. The central connecting portion 55a of the portion 16, the flat plate portions 17 and the insulating signal contact member 55 is operative to be connected with housing 13 having the major part thereof accommodated the contact engaging portion 15 of the signal contact mem with the annular coupling portion 16 and the flat plate ber 11 of the coaxial cable connector 10 coupled with the portions 17. Then, the first bendable engaging portions 18a mating coaxial connector 50 and the signal connecting provided on the shell portion 18 are bent to approach each 20 portion of the signal contact member 55 is operative to be other for engaging with the flat plate portions 17, the second connected, for example, by means of soldering, with a signal bendable engaging portions 18b provided on the shell por - terminal ( not shown in the drawings ) provided on the tion 18 are bent to approach each other for engaging with the surface 52 of the circuit board 51. outer conductor 33 of the coaxial cable 30 having the inner The mating coaxial connector 50 is further provided with conductor 31 connected with the inner conductor connecting 25 a grounding contact member 56 fixed to the base board 53. portion 14 of the signal contact member 11, and the third bendable engaging portions 18c provided on the shell por - The grounding contact member 56 is made of conductive material to be shaped into an annular member for surround tion 18 are bent to approach each other for engaging the ing the central connecting portion 55a of the signal contact external insulator 34 of the coaxial cable 30 having the inner member 55 on the top plane portion of the base board 53 and conductor 31 connected with the inner conductor connecting 30 provided with a ground connecting portion 56a extended portion 14 of the signal contact member 11 and the outer from the grounding contact member 56 through the bottom conductor 33 engaged with the second bendable engaging plate portion of the base board 53 to the outside of the base portions 18b. Thereby, as shown in FIG. 12, the outer board 53. The grounding contact member 56 is operative to conductor 33 of the coaxial cable 30 is electrically con - be connected with the annular coupling portion 16 of the nected with the shell portion 18 of the grounding contact 35 member 12 and the coaxial cable 30 is held by the second bendable engaging portions 18b and the third bendable grounding contact member 12 of the coaxial cable connector 10 coupled with the mating coaxial connector 50 and the ground connecting portion 56a of the of the grounding engaging portions 18c provided on the shell portion 18 of the contact member 56 is operative to be connected, for grounding contact member 12. example, by means of soldering, with a grounding terminal As a result, as shown in FIG. 12, FIG. 13 and FIG. 14, the 40 ( not shown in the drawings ) provided on the surface 52 of coaxial cable connector 10 in which the signal contact the circuit board 51. member 11 and the grounding contact member 12 are Thereby, the coaxial cable connector 10 mounted on the supported by the insulating housing 13 in the condition of end of the coaxial cable 30 is coupled with the mating mutual isolation is mounted on the end of the coaxial cable coaxial connector 50 fixed to the surface 52 of the circuit 30 which is provided with the inner conductor 31 connected 45 board 51 in such a manner as described above, as shown in with the inner conductor connecting portion 14 of the signal FIG. 16. contact member 11 and the outer conductor 33 connected Under a situation wherein the coaxial cable connector 10 with the shell portion 18 of the grounding contact member mounted on the end of the coaxial cable 30 is coupled with 12 and held by the second bendable engaging portions 18h the mating coaxial connector 50 fixed to the surface 52 of the and the third bendable engaging portions 18c provided on 50 circuit board 51, the annular coupling portion 16 of the the shell portion 18 of the grounding contact member 12. grounding contact member 12 of the coaxial cable connector FIG. 15 shows the mating coaxial connector 50 consti 10 is connected with the grounding contact member 56 of tuting an example of the mating coaxial connector with the mating coaxial connector 50, and the cylindrical portion which the coaxial cable connector 10 mounted on the end of 20 of the insulating housing 13 of the coaxial cable con the coaxial cable 30 is to be coupled, together with a circuit 55 nector 10 is put on the inside of the ring - shaped projection board 51 on which the mating coaxial connector 50 is 54 formed on the base board 53 to be surrounded by the mounted. The mating coaxial connector 50 is fixed to a grounding contact member 56 of the mating coaxial con surface 52 of the circuit board 51 on which various electrical nector 50 so that the central connecting portion 55a of the parts ( not shown in the drawings ) are mounted. signal contact member 55 of the mating coaxial connector The mating coaxial connector 50 is provided with a base is inserted into the cylindrical portion 20 of the insulating board 53 made of insulating material such as plastics to be housing 13 and the contact engaging portion 15 of the signal put on the surface 52 of the circuit board 51, so as to cause contact member 11 of the coaxial cable connector 10 passing the mating coaxial connector 50 to be fixed to the surface 52 through the cylindrical portion 20 of the insulating housing of the circuit board 51. The base board 53 of the mating 13 engages to be connected with the central connecting coaxial connector 50 has a bottom plane portion facing 65 portion 55a of the signal contact member 55. closely the surface 52 of the circuit board 51 on which the As described above, with the annular coupling portion 16 base board 53 is put and a top plane portion opposite to the of the grounding contact member 12 of the coaxial cable

19 US 9, 941, 606 B1 17 connector 10 connected with the grounding contact member joining with the ultrasonic vibrations from the ultrasonic 56 of the mating coaxial connector 50 in such a manner as vibration horn 41 to be electrically connected with the inner described above, the outer conductor 33 of the coaxial cable conductor connecting portion 14 of the signal contact mem 30 connected electrically with the grounding contact mem - ber 11. ber 12 of the coaxial cable connector 10 is electrically 5 On that occasion, since the concavity 25 having the connected with the grounding terminal provided on the opening is provided on the insulating housing 13 of the circuit board 51, and with the contact engaging portion 15 of coaxial cable connector 10 so as to allow the ultrasonic the signal contact member 11 of the coaxial cable connector vibration horn 41 to be put into the concavity 25 through the 10 connected with the central connecting portion 55a of the opening for applying the ultrasonic vibrations to the inner signal contact member 55 of the mating coaxial connector 10 conductor 31 of the coaxial cable 30 which is in contact with 50 in such a manner as described above, the inner conductor the inner conductor connecting portion 14 of the signal 31 of the coaxial cable 30 connected electrically with the contact member 11 placed on the bottom of the concavity 25, inner conductor connecting portion 14 of the signal contact the inner conductor 31 of the coaxial cable 30 put in contact member 11 of the coaxial cable connector 10 is electrically with the inner conductor connecting portion 14 of the signal connected with the signal terminal provided on the circuit 15 contact member 11 is supplied with the ultrasonic vibrations board 51. from the ultrasonic vibration horn 41 which is put in direct With the coaxial cable connector 10 constituting the contact with the inner conductor 31 of the coaxial cable 30 embodiment of coaxial cable connector according to the and thereby the inner conductor 31 of the coaxial cable 30 present invention or the embodiment of coaxial cable con is electrically connected with the inner conductor connecting necting method according to the present invention pro - 20 portion 14 of the signal contact member 11 by means of ceeded as described above, when the coaxial cable connector ultrasonic joining. As a result, the coaxial cable connector is mounted on the end of the coaxial cable 30, under the is able to avoid disadvantages in accompany with soldering situation wherein the inner conductor 31 of the coaxial cable for connecting electrically the inner conductor 31 of the 30 is caused to come into contact with the inner conductor coaxial cable 30 with the inner conductor connecting portion connecting portion 14 of the signal contact member of the signal contact member 11 and the inner conductor placed on the bottom of the concavity 25 provided on the 31 of the coaxial cable 30 is able to be suitably and surely insulating housing 13 of the coaxial cable connector 10 connected electrically with the inner conductor connecting through the opening of the concavity 25 and the ultrasonic portion 14 of the signal contact member 11 by means of vibration horn 41 is put into the concavity 25 through the ultrasonic joining under a condition wherein the coaxial opening of the concavity 25 so as to be in contact with the 30 cable connector 10 is subjected to reduction in its height. inner conductor 31 of the coaxial cable 30 on the inner The invention claimed is : conductor connecting portion 14 of the signal contact mem 1. A coaxial cable connector comprising : ber 11, the ultrasonic vibrations are applied from the ultra a signal contact member having an inner conductor con sonic vibration horn 41 to the inner conductor 31 of the necting portion with which an inner conductor of a coaxial cable 30 so that the inner conductor 31 of the coaxial 35 coaxial cable is to be connected and a contact engaging cable 30 is connected electrically with the inner conductor portion extended from the inner conductor connecting connecting portion 14 of the signal contact member 11 by portion for engaging with an outside signal contact means of ultrasonic joining. member, In more detail, the insulating housing 13 of the coaxial a grounding contact member having an annular coupling cable connector 10 is provided, in addition to the concavity 40 portion for coupling with an outside grounding contact 25, with the shaping concavity 27 adjacent to the concavity member and a shell portion extended from the annular 25 to have the bottom on which the inner conductor con coupling portion to be connected with an outer con necting portion 14 of the signal contact member 11 is placed and the introducing opening and the guiding concavity 28 ductor of the coaxial cable, and an insulating housing for supporting the signal contact adjacent also to the concavity 25 to be opposite to the 45 member and the grounding contact member in a con shaping concavity 27 via the concavity 25 with the bottom dition of mutual isolation, on which the inner conductor connecting portion 14 of the wherein the insulating housing is provided with a con signal contact member 11 is placed and the introducing cavity having a bottom on which the inner conductor opening. With the insulating housing 13 thus constituted, the connecting portion of the signal contact member is top end portion 3la of the inner conductor 31 of the coaxial 50 placed and an opening through which the inner con cable 30 which is caused to come into contact with the inner ductor of the coaxial cable is caused to come into conductor connecting portion 14 of the signal contact mem contact with the inner conductor connecting portion of the signal contact member placed on the bottom of the ber 11 placed on the bottom of the shaping concavity 27 through the introducing opening of the shaping concavity 27 concavity, and is shaped by the shaping concavity 27, the deep inner portion 55 wherein the concavity provided on the insulating housing 31c of the inner conductor 31 of the coaxial cable 30 which is operative to allow an ultrasonic vibration horn to be is caused to come into contact with the inner conductor put into the concavity through the opening of the connecting portion 14 of the signal contact member 11 concavity for applying ultrasonic vibrations to the inner placed on the bottom of the guiding concavity 28 through the conductor of the coaxial cable which is in contact with introducing opening of the guiding concavity 28 is guided 60 the inner conductor connecting portion of the signal by the guiding concavity 28, and the shallow inner portion contact member placed on the bottom of the concavity. 31b between the top end portion 31a and the deep inner 2. A coaxial cable connector according to claim 1, portion 31c of the inner conductor 31 of the coaxial cable 30, wherein the insulating housing is also provided, in addition which is caused to come into contact with the inner con to the concavity, with a shaping concavity adjacent to the ductor connecting portion 14 of the signal contact member 65 concavity to have a bottom on which the inner conductor 11 placed on the bottom of the concavity 25 through the connecting portion of the signal contact member is placed, opening of the concavity 25, is subjected to ultrasonic and wherein the shaping concavity has further a guiding

20 US 9, 941, 606 B1 20 opening through which the inner conductor of the coaxial insulating housing is operative to allow an ultrasonic cable is caused to come into contact with the inner conductor vibration horn to be put into the concavity through the connecting portion of the signal contact member placed on the bottom of the shaping concavity and is operative to shape the inner conductor of the coaxial cable coming into contact 5 with the inner conductor connecting portion of the signal opening of the concavity for applying ultrasonic vibra tions to the inner conductor of the coaxial cable put in contact with the inner conductor connecting portion of the signal contact member placed on the bottom of the contact member placed on the bottom of the shaping con concavity, cavity through the guiding opening. causing the inner conductor of the coaxial cable to come 3. A coaxial cable connector according to claim 2, into contact with the inner conductor connecting por wherein the overall dimension of the concavity including the 10 tion of the signal contact member placed on the bottom opening is larger than the overall dimension of the shaping of the concavity provided on the insulating housing concavity including the introducing opening. through the opening of the concavity, 4. A coaxial cable connector according to claim 2, putting the ultrasonic vibration horn into the concavity wherein the shaping concavity has a pair of slant internal through the opening of the concavity so as to be in surfaces which are opposite to each other so that a distance 15 between the slant internal surfaces increases gradually from contact with the inner conductor of the coaxial cable on the inner conductor connecting portion of the signal the bottom of the shaping concavity to the introducing contact member, opening of the shaping concavity. causing the ultrasonic vibration horn to apply the ultra 5. A coaxial cable connector according to claim 2, sonic vibrations to the inner conductor of the coaxial wherein the shaping concavity is operative to shape a top 20 cable so that the inner conductor of the coaxial cable is end portion of the inner conductor of the coaxial cable which connected electrically with the inner conductor con comes into contact with the inner conductor connecting portion of the signal contact member placed on the bottom of the shaping concavity and the concavity is operative to necting portion of the signal contact member by means of ultrasonic joining, and causing the shell portion of the grounding contact member allow the ultrasonic vibration horn to be put into the con - 25 to come into contact with the outer conductor of the cavity through the opening for applying ultrasonic vibrations coaxial cable so that the outer conductor of the coaxial to a shallow inner portion adjacent to the top end portion of cable is electrically connected with the shell portion of the coaxial cable which is in contact with the inner conduc the grounding contact member. tor connecting portion of the signal contact member put on 8. A method of connecting a coaxial cable with a coaxial the bottom of the concavity. 30 cable connector according to claim 7, wherein the insulating 6. A coaxial cable connector according to claim 5, housing of the coaxial cable connector is provided, in wherein the insulating housing is further provided, in addi addition to the concavity, with a shaping concavity adjacent tion to the concavity and the shaping concavity, with a to the concavity to have a bottom on which the inner guiding concavity adjacent to the concavity to be opposite to conductor connecting portion of the signal contact member the shaping concavity via the concavity and to have a bottom 35 is placed, and the shaping concavity has further a guiding on which the inner conductor connecting portion of the opening through which the inner conductor of the coaxial signal contact member is placed, and the guiding concavity cable is caused to come into contact with the inner conductor has further a guiding opening through which the inner connecting portion of the signal contact member placed on conductor of the coaxial cable is caused to come into contact with the inner conductor connecting portion of the signal 40 contact member placed on the bottom of the guiding con - cavity and is operative to guide a deep inner portion adjacent bottom of the guiding concavity. cable connector, which comprises the steps of the bottom of the shaping concavity and is operative to shape the inner conductor of the coaxial cable coming into contact with the inner conductor connecting portion of the signal contact member placed on the bottom of the shaping con to the shallow inner portion of the coaxial cable to the cavity through the guiding opening. 9. A method of connecting a coaxial cable with a coaxial 7. A method of connecting a coaxial cable with a coaxial 45 cable connector according to claim 8, wherein the insulating : housing of the coaxial cable connector is further provided, providing a coaxial cable connector comprising a signal in addition to the concavity and the shaping concavity, with contact member having an inner conductor connecting a guiding concavity adjacent to the concavity to be opposite portion with which an inner conductor of a coaxial to the shaping concavity via the concavity and to have a cable is to be connected and a contact engaging portion 50 bottom on which the inner conductor connecting portion of extended from the inner conductor connecting portion the signal contact member is placed and a guiding opening for engaging with an outside signal contact member, a through which the inner conductor of the coaxial cable is grounding contact member having an annular coupling caused to come into contact with the inner conductor con portion for coupling with an outside grounding contact necting portion of the signal contact member placed on the member and a shell portion extended from the annular 55 bottom of the guiding concavity, the shaping concavity is coupling portion to be connected with an outer con operative to shape a top end portion of the inner conductor ductor of the coaxial cable, and an insulating housing of the coaxial cable which comes into contact with the inner for supporting the signal contact member and the conductor connecting portion of the signal contact member grounding contact member in a condition of mutual placed on the bottom of the shaping concavity, the guiding isolation, wherein the insulating housing is provided 60 concavity is operative to guide a deep inner portion of the with a concavity having a bottom on which the inner coaxial cable to the bottom of the guiding concavity, and the conductor connecting portion of the signal contact concavity is operative to allow the ultrasonic vibration horn member is placed and an opening through which the to be put into the concavity through the opening for applying inner conductor of the coaxial cable is caused to come ultrasonic vibrations to a shallow inner portion between the into contact with the inner conductor connecting por - 65 top end portion and the deep inner portion of the coaxial tion of the signal contact member placed on the bottom cable which is in contact with the inner conductor connect of the concavity, and the concavity provided on the ing portion of the signal contact member put on the bottom