Flexible circuit service connector

• US 6,193,544 B1
• Filed: 11/04/1999
• Issued: 02/27/2001
• Est. Priority Date: 11/04/1999
• Status: Expired due to Fees

• Current Assignee: JAE Electronics, Inc. (Japan Aviation Electronics Industry Limited)
• Original Assignee: JAE Electronics, Inc. (Japan Aviation Electronics Industry Limited)
• Inventors: McGinnis, Michael S.
• Primary Examiner(s): Bradley, Paula
• Assistant Examiner(s): TA, THO DAC
• Application Number:
  US09/433,846
• Time in Patent Office: 481 Days
• Field of Search: 439/492, 439/494, 439/495, 439/496, 439/499, 439/67, 298/47, 174/117.FF, 174/250, 174/254
• US Class Current: 439/492
• CPC Class Codes: H01R 12/78 connecting to other flexible printed circuits, flat or ribbon cables or like structures
• CPC Class Codes: H01R 43/00 Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors of trolley lines B60M1/28
• CPC Class Codes: H05K 1/118 specially for flexible printed circuits, e.g. using folded portions
• CPC Class Codes: Y10T 29/49156 with selective destruction of conductive paths

Abstract

A flexible circuit can be cut and spliced to replace a device connected to a removable portion of the circuit. The cut and splice procedure is facilitated by three components, including a service segment integrated into the flexible circuit, a slider assembly that attaches to the flexible circuit within the service segment and a contact assembly that connects to the slider assembly. The service segment is configured with a number of contact pads protected by a detachable insulation layer, which is removed prior to attaching the slider assembly. The flexible circuit can be cut anywhere within a cut zone portion of the service segment in order to detach the removable portion. The slider assembly snaps onto the service segment and provides a convenient straightedge guide within the cut zone. The slider assembly also provides rigid support to the severed end of the remaining flexible circuit, forming a splice plug in conjunction with the contact pads. The contact assembly has a socket that houses contacts corresponding to the contact pads. These contacts are soldered at one end to a replacement flexible circuit. The slider assembly attaches to the contact assembly with the splice plug inserted into the socket to complete the splice. The splice is secured by a locking lever on the contact assembly that retains the slider assembly and a tab on the contact assembly that insures the slider assembly remains attached to the service segment.

Claims

1. A service connector comprising:

a flexible circuit having a thin layer of conductive material;

a service segment of said flexible circuit wherein said conductive material is patterned as a plurality of contact pads, said service segment dividing said flexible circuit into a removable portion and a remaining portion, said flexible circuit being severable within said service segment so as to detach said removable portion and create a severed end terminating said remaining portion, wherein at least a portion of each of said contact pads is located on said remaining portion proximate said severed end;

a slider attachable to said service segment, said slider configured to support said severed end and said contact pads after said removable portion is detached;

an insulator defining a socket, said socket configured for insertion of said slider; and

a plurality of contacts installed within said socket and connectable to a replacement circuit, each of said contacts connecting to a corresponding one of said contact pads when said slider is inserted into said socket.

2. The service connector of claim 1 further comprising a straightedge portion of said slider positioned across the width of said flexible circuit when said slider is attached to said service segment so as to provide a guide for severing said flexible circuit.

3. The service connector of claim 1 wherein said slider is configured to removably clamp onto said flexible circuit within said service segment.

4. The service connector of claim 1 wherein said service segment defines an edge notch and said slider has a key portion configured to engage said notch only when said slider is mounted to said service segment with a predetermined orientation.

5. The service connector of claim 1 further comprising a cut zone within said service segment, said contacts being connectable to said contact pads if said flexible circuit is cut anywhere within said cut zone.

6. The service connector of claim 5 wherein said cut zone is at least 10 mm in length.

7. The service connector of claim 1 wherein said insulator removably latches to said slider.

8. The service connector of claim 7 wherein said insulator has a tab that retains the attachment of said slider to said service segment when said insulator is latched to said slider.

9. A method of cutting off a removable portion of a flexible circuit and splicing a replacement circuit to a remaining portion of said flexible circuit comprising the steps of:

providing a service segment between said removable portion and said remaining portion, said remaining portion having a plurality of contact pads;

attaching a support to said remaining portion within said service segment;

severing said flexible circuit within said service segment so as to detach said removable portion from said remaining portion;

installing a plurality of contacts within an insulator;

electrically connecting said plurality of contacts to said replacement circuit; and

mating said support to said insulator so as to provide electrical connection between each of said contacts and a corresponding one of said contact pads.

10. The method of claim 9 further comprising the step of defining a cut zone within said service segment, said severing step occurring within said cut zone.

11. The method of claim 9 further comprising the step of positioning a straightedge within said service segment to guide the performance of said severing step.

12. The method of claim 9 further comprising the step of forming a splice plug.

13. The method of claim 9 wherein said attaching step comprises the substep of removably clamping said flexible circuit between a slider and a lock.

14. The method of claim 9 wherein said connecting step comprises the substep of soldering each of said contacts to a corresponding one of a plurality of solder pads.

15. The method of claim 9 wherein said mating step comprises the substep of plugging the severed end of said remaining portion into a socket portion of said insulator.

16. The method of claim 9 further comprising the step of removably locking said support to said insulator.

17. A service connector assembly severing a flexible circuit so as to detach a removable portion of said flexible circuit from a remaining portion of said flexible circuit and creating a splice between a replacement circuit and a severed end of said remaining portion, said assembly comprising:

a service segment means for providing a plurality of contact pads on said remaining portion wherein, said flexible circuit being severable within service segment means;

a splice plug means for supporting said severed end and said contact pads, said splice plug means attachable to said service segment means;

a socket means for engaging said splice plug means;

a contact means installed within said socket means for providing electrical connection to said contact pads when said splice plug means engages said socket means, said contact means connectable to said replacement circuit so as to provide electrical communications between said replacement circuit and said remaining portion when said splice plug engages said socket means, completing said splice.

18. The service connector assembly of claim 17 wherein said service segment means comprises a notch means for aligning and retaining said splice plug means onto said service segment means.

19. The service connector assembly of claim 17 wherein said splice plug means comprises:

a slider means for providing a shelf proximate said contact pads; and

a lock means for securing said slider means to said service segment.

20. The service connector assembly of claim 17 further comprising a clamp means for providing strain relief when said contact means are attached to said replacement circuit, said clamp means attachable to said socket means.