Vehicle power seat adjuster with flex cable guides

• US 5,791,622 A
• Filed: 07/02/1996
• Issued: 08/11/1998
• Est. Priority Date: 07/02/1996
• Status: Expired due to Fees

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Gauger, Derek
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): Anderson, Gerald A.
• Application Number:
  US08/674,538
• Time in Patent Office: 770 Days
• Field of Search: 248/394, 248/395, 248/429, 248/430, 297/344.1, 297/311, 74/500.5, 74/501.5, 74/89.15, 464/52, 464/53
• US Class Current: 248/430
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/067 by linear actuators, e.g. linear screw mechanisms
• CPC Class Codes: Y10T 74/18616 Single input, plural outputs

Abstract

Guide members are carried on a drive motor mounting bracket in a vehicle power seat adjuster and receive a flex drive shaft extending between the drive motor and a lead screw mounted in the track assembly in a snap-in connection. The guide members stationarily support the flex drive cable from movement and are formed of a pair of spaced legs. Inner surfaces of the legs have an arcuate shape to snap around and tightly engage the flex drive cable housing.

Claims

1. A vehicle power seat adjuster comprising:

first and second spaced track assemblies, each formed of a first component movable relative to a stationary, second component;

a drive motor having at least one rotatable output shaft;

a rotatable lead screw operatively coupled to the first and second components;

a flexible drive cable coupled between the motor output shaft and the lead screw; and

guide means, carried on the power seat adjuster, for fixedly and stationarily receiving the flexible drive cable.

2. The vehicle power seat adjuster of claim 1 wherein the guide means is disposed between opposed ends of the flex drive cable.

3. The vehicle power seat adjuster of claim 1 wherein the guide means comprises:

a guide member formed of first and second spaced legs, the first and second legs spaced apart a distance to securely receive the flexible drive cable therebetween in a snap-in connection.

4. The vehicle power seat adjuster of claim 3 wherein:

an inner surface of the first and second legs has an arcuate shape conforming to an exterior of the flex drive cable.

5. The vehicle power seat adjuster of claim 3 wherein:

inner facing ends of the first and second legs are spaced closer together than an outer diameter of the flex drive cable such that the first and second legs bend apart as a flex drive cable is urged therebetween and move back to a normal position when the flex drive cable is fully inserted in the guide member.

6. The vehicle power seat adjuster of claim 3 wherein:

the front and second legs have a generally planar form.

7. The vehicle power seat adjuster of claim 3 wherein:

the first and second legs have an arcuate shape.

8. The vehicle power seat adjuster of claim 1 wherein the guide means comprises:

a plurality of individual, spaced guide members.

9. The vehicle power seat adjuster of claim 1 further comprising:

a motor mounting bracket fixedly connected to and extending between the first and second track assemblies, the motor mounting bracket supporting the drive motor; and

the guide means carried on the motor mounting bracket.

10. The vehicle power seat adjuster of claim 9 wherein:

the guide means is integrally formed as a one-piece, molded part of the motor mounting bracket.

11. The vehicle power seat adjuster of claim 9 wherein:

the guide means is fixedly mounted on the motor mounting bracket.

12. The vehicle power seat adjuster of claim 1 further comprising:

another rotatable lead screw operatively coupled to the first and second components in the other track assembly;

another flexible drive cable coupled between the motor output shaft and the another lead screw;

the guide means fixedly engaging the another flexible drive shaft.

13. The vehicle power seat adjuster of claim 1 further comprising:

a gear box coupled to the lead screw and the flexible drive cable, the guide means disposed between the gear box and the drive motor.

14. The vehicle power seat adjuster of claim 13 wherein the gear box comprises:

coupling means for receiving one end of the flexible drive cable; and

wherein one of the guide means is disposed adjacent to the gear box for co-axial alignment of one end of the flexible drive cable with the coupling means in the gear box.

15. A vehicle power seat adjuster comprising:

first and second spaced track assemblies, each formed of a first component movable relative to a stationary, second component;

a drive motor having at least one rotatable output shaft;

a motor mounting bracket fixedly connected to and extending between the first and second track assemblies, the motor mounting bracket supporting the drive motor;

a rotatable lead screw operatively coupled to the first and second components in one of the first and second track assemblies;

a flexible drive cable coupled between the motor output shaft and the lead screw; and

a plurality of guide members carried on the motor mounting bracket for fixedly and stationarily receiving the flexible drive cable.

16. The vehicle power seat adjuster of claim 15 wherein the guide members are spaced apart between posed ends of the flex drive cable.

17. The vehicle power seat adjuster of claim 15 wherein each guide member comprises:

first and second spaced legs, the first and second legs spaced apart a distance to securely receive the flexible drive cable therebetween in a snap-in connection.

18. The vehicle power seat adjuster of claim 17 wherein:

an inner surface of the first and second legs has an arcuate shape conforming to an exterior of the flex drive cable.

19. The vehicle power seat adjuster of claim 17 wherein:

inner facing ends of the first and second legs are spaced closer together than an outer diameter of the flex drive cable such that the first and second legs bend apart as a flex drive cable is urged therebetween and move back to a normal position when the flex drive cable is fully inserted in the guide member.

20. The vehicle power seat adjuster of claim 15 wherein:

the plurality of guide members are integrally formed as a one-piece, molded part of the motor mounting bracket.

21. The vehicle power seat adjuster of claim 15 wherein:

the plurality of guide members are fixedly mounted on the motor mounting bracket.

22. The vehicle power seat adjuster of claim 15 further comprising:

a gear box coupled to the lead screw and the flexible drive cable, the guide members being disposed between the gear box and the drive motor.

23. The vehicle power seat adjuster of claim 22 wherein the gear box comprises:

coupling means for receiving one end of the flexible drive cable; and

wherein one of the guide members disposed adjacent to the gear box for co-axial alignment of one end of the flexible drive cable with the coupling means in the gear box.