USB Flash-Memory Card with Perimeter Frame and Covers That Allow Mounting of Chips on Both Sides of a PCB

• US 20050085129A1
• Filed: 12/27/2004
• Published: 04/21/2005
• Est. Priority Date: 09/11/2003
• Status: Active Grant

• Current Assignee: Super Talent Electronics, Inc.
• Original Assignee: Super Talent Electronics, Inc.
• Inventors: Ni, Jim Chin-Nan, Chiou, Ren-Kang
• Granted Patent: US 7,044,802 B2
• Time in Patent Office: Days
• US Class Current: 439/607.10
• CPC Class Codes: G06K 19/07732 the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks housings for electrical equipment in general, see H05K5/02
• CPC Class Codes: G06K 19/07733 the record carrier containing at least one further contact interface not conform ISO-7816
• CPC Class Codes: H01R 13/717 with built-in light source
• CPC Class Codes: H01R 13/7175 Light emitting diodes (LEDs)
• CPC Class Codes: H01R 24/62 Sliding engagements with one side only, e.g. modular jack coupling devices

Abstract

A flash-memory-drive card has a Universal-Serial-Bus (USB) connector. The card has a printed-circuit board (PCB) that fits into a perimeter frame that surrounds the edges of the PCB. Metal or plastic upper and lower covers are snapped onto the frame to encapsulate the PCB. The USB connector can be a Full USB connector plug that extends from the perimeter frame and has a centerline approximately matching the PCB centerline for a balanced design, or can be a slim or reduced-height USB connector plug that has a frame closure bar that fits inside closure fittings on the perimeter frame. The USB connector can also be made from a frame extension that has four frame slots through the frame. The PCB has four PCB fingers that are inserted through the frame slots during assembly so that the PCB fingers fit within depressions in the frame extension to form the USB connector plug.

Claims

1. A framed card with an integrated Universal-Serial-Bus (USB) connector comprising:

a circuit board having a top surface and a bottom surface substantially parallel to the top surface, the circuit board having edges around a perimeter of the top and bottom surfaces, the circuit board having wiring traces;

an integrated circuit mounted on the bottom surface of the circuit board;

a perimeter frame shaped to surround the circuit board on at least three of the edges of the circuit board, the perimeter frame having a height that is greater than a thickness of the circuit board between the top and bottom surfaces, the perimeter frame having a central opening approximately matching a shape of the bottom surface of the circuit board so that the circuit board can be inserted within the perimeter frame during assembly;

an upper cover, attachable to the perimeter frame during assembly, for covering the central opening of the perimeter frame to encapsulate the top surface of the circuit board when assembled;

a lower cover, attachable to the perimeter frame during assembly, for covering the central opening of the perimeter frame to encapsulate the bottom surface of the circuit board when assembled; and

a USB connector, extending from the perimeter frame and electrically connected to the circuit board, having USB metal contacts for mating with corresponding USB metal contacts in a USB socket when the USB connector is inserted into the USB socket, the USB connector being attached to the circuit board so that the USB metal contacts are electrically connected to the integrated circuit on the circuit board through the wiring traces on the circuit board;

whereby the circuit board is encapsulated on the edges by the perimeter frame and is encapsulated on a top by the upper cover and on a bottom by the lower cover that attach to the perimeter frame.

2. The framed card of claim 1 further comprising:

a plurality of dividers, substantially parallel to the USB metal contacts and formed between the USB metal contacts, each divider disposed between an adjacent pair of the USB metal contacts, the plurality of dividers rising above a level of the USB metal contacts when assembled;

wherein the plurality of dividers are for filling in a gap between the USB connector and the USB socket when the USB connector is inserted into the USB socket.

3. The framed card of claim 2 wherein the perimeter frame forms a closed loop that completely surrounds the central opening.

4. The framed card of claim 3 wherein the USB connector comprises:

a frame extension of the perimeter frame, the frame extension extending outward, in a direction away from the central opening;

a plurality of frame slots in the perimeter frame, the plurality of frame slots between the central opening and the frame extension; and

a plurality of board fingers that extend from the circuit board, the plurality of board fingers fitting through the plurality of frame slots during assembly so that the plurality of board fingers are situated in the frame extension after assembly;

wherein the USB metal contacts are formed on the plurality of board fingers.

5. The framed card of claim 3 wherein the USB connector comprises:

a plug substrate that supports the USB metal contacts;

a metal wrap that wraps around the plug substrate and the USB socket when the USB connector is inserted into the USB socket; and

soldering leads, electrically connected to the USB metal contacts on the plug substrate, the soldering leads for soldering to traces on the top surface of the circuit board.

6. The framed card of claim 5 wherein the USB connector is a slim USB connector or a full-sized USB connector.

7. The framed card of claim 2 further comprising:

a light-emitting diode LED mounted to the circuit board near an edge opposite the USB connector when assembled; and

a lightpipe that fits on the perimeter frame near the LED when assembled.

8. The framed card of claim 2 further comprising:

electrical components mounted to the top surface of the circuit board; and

electrical components mounted to the bottom surface of the circuit board,

whereby electrical components are mounted to both top and bottom surfaces of the circuit board.

9. The framed card of claim 2 wherein the perimeter frame forms an open loop that partially but not completely surrounds the central opening.

10. The framed card of claim 9 wherein the perimeter frame is a C-shaped frame.

11. The framed card of claim 10 wherein the USB connector comprises:

a slim USB connector plug having the USB metal contacts;

a frame closure bar disposed between the slim USB connector plug and the circuit board when assembled; and

soldering leads, electrically connected to the USB metal contacts on the slim USB connector plug, the soldering leads for soldering to traces on the top surface of the circuit board.

12. The framed card of claim 11 further comprising:

closure fittings on the perimeter frame near open ends of the open loop, the closure fittings for mating with the frame closure bar when the circuit board and the USB connector are assembled to the perimeter frame;

wherein the closure fittings and the frame closure bar form a closed loop that completely surrounds the central opening when assembled.

13. The framed card of claim 2 further comprising:

an end cap for fitting over the USB connector when not connected to the USB socket, for protecting the USB connector from damage.

14. The framed card of claim 2 further comprising:

snap tabs near a perimeter of the upper cover and the lower cover;

snap slots on the perimeter frame for receiving the snap tabs when the upper cover and the lower cover are assembled to the perimeter frame;

wherein the snap tabs lock into the snap slots during assembly to secure the upper cover and the lower cover to the perimeter frame.

15. The framed card of claim 14 wherein the snap tabs further comprise:

flexible extensions that are distorted during insertion of the snap tabs into the snap slots, the flexible extensions releasing to lock when the snap tabs are fully inserted into the snap slots.

16. A portable Universal-Serial-Bus (USB) framed assembly comprising:

a circuit board having wiring traces and electronic components mounted thereon, the circuit board having a contact side;

a perimeter frame that surrounds the circuit board, the perimeter frame being an open ring shape or a closed ring shape;

an upper cover for substantially covering the contact side of the circuit board when assembled to the perimeter frame;

a lower cover for substantially covering a reverse side opposite the contact side of the circuit board when assembled to the perimeter frame;

a USB connector mounted to an end of the circuit board, the USB connector protruding through the perimeter frame, the USB connector having a connector substrate having four metal contacts on an insertion end, the four metal contacts for connecting to USB contacts in a USB socket when inserted; and

dividers between and parallel to the four metal contacts on the USB connector, the dividers rising above a level of the four metal contacts,

whereby side edges the circuit board are enclosed by the perimeter frame, while the contact side of the circuit board is enclosed by the upper cover and the perimeter frame and the reverse side of the circuit board is enclosed by the lower cover and the perimeter frame.

17. The portable Universal-Serial-Bus (USB) framed assembly of claim 16 further comprising:

one or more finger extensions of the circuit board that has the four metal contacts on a contact side;

a frame slot in the perimeter frame, the frame slot sized to allow the finger extension of the circuit board to fit through to the USB connector; and

a depression in the USB connector for receiving the finger extension fitted through the frame slot.

18. The portable Universal-Serial-Bus (USB) framed assembly of claim 16 further comprising:

closure fittings in the perimeter frame when the perimeter frame has the open ring shape, the closure fittings near an opening in the open ring shape; and

a frame closure bar on a rear end of the USB connector opposite the insertion end, the frame closure bar fitting into the closure fittings.

19. A reduced-height Universal-Serial-Bus (USB) plug card comprising:

circuit board means for supporting integrated circuits on a bottom side, having an insertion end for insertion into a USB socket, the insertion end extending beyond a center area of the circuit board means;

metal contactor means, formed on the insertion end of a top side of the circuit board means, for making electrical contact with a USB socket when the insertion end is inserted into the USB socket;

frame means for framing the center area of the circuit board means, the frame means substantially exposing the top side and the bottom side of the circuit board means when the circuit board means is fitted inside the frame means, but the insertion end of the circuit board means extending beyond the frame means;

frame extension means, integral with and formed with the frame means, for supporting the insertion end of the circuit board means and exposing the metal contactor means;

top cover means, formed from plastic or metal, for snapping to the frame means to partially encapsulate the top side of the circuit board means;

bottom cover means, formed from plastic or metal, for snapping to the frame means to encapsulate the bottom side of the circuit board means;

divider means, formed on the frame extension means between the metal contactor means, for dividing gaps between the insertion end of the USB plug card and the USB socket when inserted; and

end means, on the frame extension means, for extending side edges of the frame extension means to fill in gaps to sides of the USB socket produced by lack of a surrounding wrap surrounding the frame extension means and the insertion end;

whereby stability when inserted into the USB socket is increased by the divider means, the end means, and the frame extension means.

20. The reduced-height Universal-Serial-Bus (USB) plug card of claim 19 further comprising:

snap means for snapping and locking the top cover means to the frame means, and for snapping and locking the bottom cover means to the frame means.