Cam-actuated terminal connector

• US 5,961,344 A
• Filed: 08/26/1997
• Issued: 10/05/1999
• Est. Priority Date: 08/26/1997
• Status: Expired due to Fees

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Gronowicz, William, Rosales, Mark Steven
• Primary Examiner(s): Nguyen, Khiem
• Application Number:
  US08/920,016
• Time in Patent Office: 770 Days
• Field of Search: 439/495, 439/863, 439/864, 439/876
• US Class Current: 439/495
• CPC Class Codes: H01R 12/61 connecting to flexible printed circuits, flat or ribbon cables or like structures
• CPC Class Codes: H01R 12/774 Retainers
• CPC Class Codes: H01R 13/585 Grip increasing with strain force
• CPC Class Codes: H01R 4/5008 using rotatable cam

Abstract

A connector for removably joining a plurality of electrical terminals to a flat cable. The connector has a housing containing two eccentric cams mounted on separate, parallel axes. The cams are spring biased to a closed position wherein the adjacent surfaces are relatively close together and are rotatable by a push-button actuated release mechanism to an open position wherein the surfaces are relatively far apart. An end of the flat cable is stripped of insulation to expose the conductors and is inserted through an aperture in the housing and between the adjacent surfaces of the cams from a first direction. The plurality of terminals is inserted through a second aperture and between the adjacent surfaces of the cams from the opposite direction into overlapping relationship with the flat cable. A ridge projecting from the surface of the first cam engages a trough formed in the surface of the second cam when the cams are in the closed position to clamp the terminals into contact with the respective conductors of the cable. Any tension on the cable tends to rotate the cams to clamp even more tightly on the cable and terminals so that it is very difficult to pull the cable out of the connector. The terminals and/or cable are easily removed from the connector by depressing the push-button release mechanism.

Claims

1. A connector for achieving electrical continuity between a flat cable having at least one conductor and at least one mating conductor, the connector comprising:

a housing having a first aperture for receiving the flat cable therethrough and a second aperture for receiving the mating conductor therethrough;

first and second cams mounted within the housing for rotation about parallel, spaced axes between respective first positions wherein confronting surfaces of the cams are spaced from one another by a first distance sufficiently large to receive the flat cable and the mating conductor therebetween in overlapping relationship to one another, and respective second positions wherein the confronting surfaces are spaced from one another by a second distance sufficiently small to clamp the overlapping flat cable conductor and the mating conductor into contact with one another;

means for biasing the cams toward the second positions; and

means on the cams for ensuring that the cams rotate in unison with one another and in opposite directions about their respective axes.

2. A connector according to claim 1 wherein the second aperture comprises means for restraining the mating conductor against being withdrawn from the housing through the second aperture.

3. A connector according to claim 2 wherein the means for restraining the mating conductor comprises a receptacle for receiving the mating conductor and a cover openable to allow insertion of the mating conductor into the receptacle and between the confronting surfaces of the cams and closable to inhibit removal of the mating conductor from the receptacle.

4. A connector according to claim 3 wherein the cover has at least one window formed therein for receiving a third conductor therethrough into connection with the mating conductor.

5. A connector according to claim 1 further comprising means actuable from outside of the housing to rotate at least one of the cams toward the first position.

6. A connector according to claim 5 wherein the means for rotating the at least one cam comprises a series of gear teeth on the at least one cam and a member movable with respect to the housing and having a toothed rack engageable with the gear teeth on the at least one cam to rotate the cam.

7. A connector according to claim 1 wherein at least one of the confronting surfaces of the cams has means thereon for clamping the overlapping conductors into contact with one another.

8. A connector according to claim 7 wherein the clamping means comprises a projection on the first cam and a receptacle on the second cam, the projection and the receptacle fitting into engagement with one another when the cams are in their respective second positions.

9. A connector according to claim 1 wherein the means for biasing the cams comprises a first spring acting between the first cam and the housing and a second spring acting between the second cam and the housing.

18. A connector according to claim 1 wherein the means for ensuring that the cams rotate in unison and in opposite directions comprises first and second gear segments disposed on the first and second cams respectively, the first and second gear segments meshingly engaged with one another.

10. A connector for achieving electrical continuity between a flat cable having at least one conductor and at least one electrical terminal having a blade portion and a coupling portion, the connector comprising:

a housing having a first aperture for receiving the flat cable therethrough and a second aperture for receiving the at least one terminal therethrough;

first and second cams mounted within the housing for rotation about parallel, spaced axes between respective first positions wherein confronting surfaces of the cams are spaced from one another by a first distance sufficiently large to receive the conductor and the terminal blade portion therebetween in overlapping relationship to one another, and respective second positions wherein the confronting surfaces are spaced from one another by a second distance sufficiently small to clamp the overlapping conductor into contact with the terminal blade portion;

means for biasing the cams toward the second positions; and

means mounted in the housing and actuated from outside the housing for rotating at least one of the cams toward the first position.

11. A connector according to claim 10 wherein the second aperture comprises means for restraining the terminal against being withdrawn from the housing through the second aperture.

12. A connector according to claim 11 wherein the means for restraining the terminal comprises a cover openable to allow insertion of the terminal through the second aperture and between the confronting surfaces of the cams and closable to inhibit removal of the terminal from between the cams.

13. A connector according to claim 12 wherein the cover has at least one window formed therein for receiving a third conductor therethrough into connection with the terminal coupling portion.

14. A connector according to claim 10 wherein the means for rotating the at least one cam comprises a series of gear teeth on the at least one cam and a member movable with respect to the housing and having a toothed rack engageable with the gear teeth on the at least one cam to rotate the cam.

15. A connector according to claim 10 wherein at least one of the confronting surfaces of the cams has means thereon for clamping the overlapping conductor and terminal portion into contact with one another.

16. A connector according to claim 15 wherein the clamping means comprises a projection on the first cam and a receptacle on the second cam, the projection and the receptacle fitting into engagement with one another when the cams are in their respective second positions.

17. A connector according to claim 10 wherein the means for biasing the cams comprises a first spring acting between the first cam and the housing and a second spring acting between the second cam and the housing.

19. A connector for achieving electrical continuity between a flat cable having at least one conductor and at least one mating conductor, the connector comprising:

a housing having a first aperture for receiving the flat cable therethrough and a second aperture for receiving the mating conductor therethrough;

first and second cams mounted within the housing for rotation about parallel, spaced axes, the cams having confronting surfaces, the confronting surfaces of the first cam having a projection and the confronting surface of the second cam having a receptacle, the cams being rotatable between respective first positions wherein the confronting surfaces of the cams are spaced from one another by a first distance sufficiently large to receive the flat cable and the mating conductor therebetween in overlapping relationship to one another, and respective second positions wherein the confronting surfaces are spaced from one another by a second distance sufficiently small to clamp the overlapping flat cable and the mating conductor into contact with one another between the projection and the receptacle.