BrydgeAir Keyboard for ipad Air

Transcription

1 BrydgeAir Keyboard for ipad Air May 3 rd by XiaoMing Chen & Larry Zhang PennEngineering 1

2 BrydgeAir Keyboard for ipad Air Overview 2

3 BrydgeAir Keyboard for ipad Air Details & Findings Pictures and Description of the BrydgeAir Keyboard for ipad Air and the Disassembly Process. 3

4 BrydgeAir Keyboard for ipad Air Step 1: Remove the four glued black Rubber Anti-Skid Pads from the back cover(circled in Green). Four bright nickel plated screws (circled in Red) behind the pads and two black nickel plated screws (circled in Blue) appear on this side. 4

5 BrydgeAir Keyboard for ipad Air Step 2: To remove the back cover, the four bright nickel plated screws and the two black nickel plated screws need to be removed. The first step is to remove the four bright nickel plated screws (circled in Red). The screws engaged into extruded threaded holes are illustrated in the next slide. (Continued on slide #7) Thread Size Quantity Driver Head Dia. OAL Material Plating M2.5 x Phillip 1# Carbon Steel Bright Nickel 5

6 BrydgeAir Keyboard for ipad Air The extruded threaded holes (circled in Green). 6

7 BrydgeAir Keyboard for ipad Air (Continued) Step 2: We then remove two black nickel plated screws (circled in Blue) that are tightened into Aluminum alloy standoffs demonstrated on the slide #11 in Red. Thread Size Quantity Driver Head Dia. OAL Material Plating M2.5 x Phillip 0# Carbon Steel Black Nickel 7

8 BrydgeAir Keyboard for ipad Air With the back cover removed we have a total of thirteen screws appears. Step 3: Initially we remove five bright nickel plated screws (circled in Red). The bright nickel plated screws engaged into the Aluminum alloy standoffs (Slide #11 in Red). (Continued on next slide) Thread Size Quantity Driver Head Dia. OAL Material Plating M2.5 x Phillip 0# Carbon Steel Bright Nickel 8

9 BrydgeAir Keyboard for ipad Air (Continued) Step 3: Then we remove eight black oxide treated screws (circled in Blue). The black oxide screws are engaged into internal threads depicted in slide #12 in Blue. Thread Size Quantity Driver Head Dia. OAL Material Plating M2.5 x Phillip 1# Carbon Steel Black Oxided 9

10 BrydgeAir Keyboard for ipad Air Step 4: Keyboard Removal. 8X Rubber Spacer 10

11 BrydgeAir Keyboard for ipad Air Step 5: Removing the keyboard leaves us with a total of seven standoffs and eight tapped holes. The pictures below point out the standoffs. To be continued in the next slide for the tapped holes. Thread: M2.5 QTY: 7X OAL: 5.1mm Knurl Height: 0.85mm Knurl Diameter: 5.0mm Barrel Diameter: 4.5mm Material: Aluminium 11

12 BrydgeAir Keyboard for ipad Air (Continued) Step 5: Tapped holes: The threads integrated to the Aluminum keyboard frame. Thread: M2.5 QTY: 8X Material: Aluminum 12

13 BrydgeAir Keyboard for ipad Air Step 6: Keyboard disassembly: The keyboard component consists of one keyboard, one insulating sheet, one sheet metal and one magnetic spacer, four parts. (Continued on next slid) Keyboard (back view) Sheet Metal Insulating Sheet Keyboard (front view) Magnetic spacer 13

14 BrydgeAir Keyboard for ipad Air (Continued) Step 6: Keyboard disassembly: The magnetic spacer (circled in Red ) is used for positioning and spacing purposes between the keyboard and the bottom piece. The intersectional contact surfaces between the bottom of the keyboard and the top of the insulating sheet, the bottom of the insulating sheet and the top of the sheet metal are glued together by using double sided adhesives. Keyboard Bottom Piece One magnet build in the component, works as a circuit switch opening and closing the Keyboard while activating the power toggle on the ipad without any other fastening function. Magnetic spacer 14

15 BrydgeAir Keyboard for ipad Air (Continued) Step 6: Keyboard disassembly: On the insulating sheet and sheet metal we find a machined hole for the both with same ordinate dimensions (circled in Blue). The two sheets align with each other in the same direction by the magnetic spacer that positions and maintains space between the keyboard component and the back cover. Adhesive tape of certain length and width is used for holding the magnet onto the sheet metal. Refer to the drawing below for the joining approach. 15

16 BrydgeAir Keyboard for ipad Air Teardown is completed. 16

17 Fastener Summary 17

18 Fastener Summary 4 x Flat head M2.5 x 4.8 mm overall length 3.9 mm head diameter 0.8 mm head thickness 1# Phillips Recess ISO metric threads No locking patch used Bright Nickel plating Reference slide # 5 8 x Countersunk head M2.5 x 3.8 mm overall length 3.4 mm head diameter 1.0 mm head thickness 1# Phillips Recess ISO metric threads Nylon locking patch used Black Oxided Reference slide # 9 2 x Flat head M2.5 x 5.6 mm overall length 4.5 mm head diameter 0.8 mm head thickness 0# Phillips Recess ISO metric threads No locking patch used Black Nickel plating Reference slide # 7 5 x Flat head M2.5 x 3.5 mm overall length 3.9 mm head diameter 0.8 mm head thickness 1# Phillips Recess ISO metric threads No locking patch used Bright Nickel plating Reference slide # 8 18

19 Fastener Summary 7 x Thread: M mm overall length Knurl Height: 0.85mm Knurl Diameter: 5.0mm Barrel Diameter: 4.5mm Material: Aluminium Reference slide # 11 4 x Extruded Thread: M2.5 Sheet thickness: 0.6mm Extruded Thread length: 1.6mm Extruded hole dia: 2.15mm Height: 0.85mm Barrel diameter: 2.85mm Material: Carbon steel Reference slide # 6 8 x Thread: M2.5 Material: Aluminium Reference slide # 12 19

20 Alternate Solutions PennEngineering recommendations of alternate hardware and cost saving opportunities. 20

21 Alternate Solutions I PennEngineering can be able to provide different sizes metric micro screws to meet the application requirement. As a alternate solution. PEM has license with Torx, Torx Plus, and Phillips Drive System and has capability to do both Zinc and Nickel with different color. 21

22 Alternate Solutions II In this teardown, we notice two recess dimensions in the same nominal threads. To further simplify and consolidate the existing fastening method, all of the screws can be provided to the customer in identical recess dimensions, This will help decrease the manufacturing cost. 22

23 Alternate Solutions III The M2.5 Aluminium made standoff can be replaced by PEM engineered CSS, CSA and FEOX series Concealed-Head Standoffs and PEM Type MSO4 Self-clinching micropem Standoffs. 23

24 Alternate Solutions IV The M2.5 Aluminium made standoff can also be replaced by PEM Type MSO4 Self-clinching micropem Standoffs with a special punch. 24

25 Alternate Solutions V PEM TackScrew fasteners, PEM TackSert pins and PEM TackPin fasteners provide excellent solutions replacing regular screws with a decreased installation cost. All three options are pressed into a hole axially and will not loosen through vibration over time unlike a regular screw.. PEM TackScrew Fasteners: The base panel material should be metal. The panel can be as hard as HRB 88 or less and as thin as 0.91mm. They can be removed in the same way as a screw but only once; After the first removal they can be re-inserted just once again. This allows for a one-time repair, rework or maintenance. PEM TackSert Pins: The base panel can be metal, die-cast or plastic. The parts are not intended to be removed. PEM TackPin Fasteners: The base panel has to be of metal material. The panel to be clinched on can be as hard as HRB 88 or less and at least 0.89mm of thickness. They are not intended to be reinstalled/ replaced. 25

26 Alternate Solutions VI PEM Type SMPS nuts and PEM Type MSO4 standoffs can be a great alternative for the M2.5 extruded threaded holes in the metal sheet illustrated on the slide #6 in Green. 26

27 Alternate Solutions VII PEM Type SETSO4 series standoffs can also be a good alternative to replace the M2.5 extruded tapped holes (illustrated on the slide #6 in Green) in metal sheet, no need to prepare a mounting hole in application. 27

28 Alternate Solutions VIII In the disassembly process, the screws are used to fix & connect the substrate to other parts. As an alternate solution, the PEM Snap-in Fastener (patent pending) can be used to assemble the parts. Patent Pending A stack of layers of different materials Snap-in fastener (SIF) Clinching Adapter into the substrate Substrate NO TAPPING NEEDED! 28

29 Retained Magnet The magnet shown in slides can be replaced with a clinched magnet. This eliminates the need for adhesive tapes providing a much stronger, more durable and longer lasting hold. It also places the magnet coplanar to the surface for better attraction properties. The magnet can be a standard magnet or even correlated magnetic product (The RCM is currently being developed). Clinch features Back Side (Projects above plate) Front Side (Coplanar to plate) Placement of the clinch feature can adjusted so that the magnet face can be positioned at any point at or above the panel.

30 Conclusions and Summary BrydgeAir Keyboard for ipad Air 30

31 Conclusion Through the teardown process, we identified that 19 pieces M2.5 screws and 7 pieces (aluminum alloy) M2.5 standoffs with metric profile thread are used in the device. Additionally, eight integrated M2.5 internally threaded tapped holes and four extruded threaded holes are used in certain parts for fastening purposes. As indicated earlier, PennEngineering can help make the device more competitive by employing both standard solutions and solutions uniquely modified for this keyboard. The use of PEM hardware clinching standoffs and micro fasteners could provide savings worth considering. 31