Longitudinal adjuster for a vehicle seat, and vehicle seat

Patent metadata

Field	Value
Publication number	US-10703226-B2
Application number	US-201716304410-A
Country	US
Kind code	B2
Filing date	May 24, 2017
Priority date	May 27, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A longitudinal adjuster (10) for a vehicle seat (1), has pairs of rails (12a, 12b) including a lower rail (14a) and an upper rail (14b) that are movable in a longitudinal direction (x) relative to one another and can be locked together by a locking device (16). An actuating device (18) has a transmission rod (22) arranged between the two locking devices. A hand grip (20), connected to the transmission rod, is provided for joint actuation of the two locking devices. The transmission rod is operatively connected to the two locking devices. A spring element (30), which applies a spring force to the actuating device toward a rest position or passive position, does not project beyond the locking device in the vertical direction (z). The spring element applies a torque to the transmission rod along the longitudinal extent thereof relative to the longitudinal direction (x).

First claim

The invention claimed is:

1. A longitudinal adjuster for a vehicle seat, the longitudinal adjuster comprising:
at least two pairs of rails each pair of rails being formed from a lower rail and an upper rail, wherein the lower and upper rails mutually engage each other and are movable relative to each other in a longitudinal direction;
two locking devices, wherein the lower and upper rails and are each lockable to each other by means of one of the two locking devices;
an actuating device for the mutual actuation of the two locking devices, the actuating device comprising;
a transmission rod arranged between the two locking devices, and
a handle, which is connected to the transmission rod,
wherein the transmission rod is operatively connected to the two locking devices; and
a spring element acting upon the actuating device with a spring force in a direction of an inoperative position or passive position, wherein the spring element does not protrude over the locking device in a vertical direction and acts upon the transmission rod along a longitudinal extent thereof with a torque relative to the longitudinal direction;
wherein the spring element lies against the longitudinal adjuster at five contact points.

2. The longitudinal adjuster as claimed in claim 1 , wherein the transmission rod is shifted downward such that the transmission rod and the actuating device do not protrude over the locking device in the vertical direction.

3. The longitudinal adjuster as claimed in claim 1 , wherein the spring element is configured as a spring-elastic wire bending part.

4. The longitudinal adjuster as claimed in claim 3 , wherein the spring element is configured as a spring wire shaped part.

5. The longitudinal adjuster as claimed in claim 1 , wherein the spring element is supported via the five contact points.

6. The longitudinal adjuster as claimed in claim 1 , wherein the actuating device has a receptacle for the spring element.

7. The longitudinal adjuster as claimed in claim 6 , wherein the receptacle is provided by the handle.

8. The longitudinal adjuster as claimed in claim 1 , wherein a first end of the spring element is supported on the upper rail.

9. The longitudinal adjuster as claimed in claim 8 , wherein a first end of the spring element is supported on the upper rail at a contact point.

10. The longitudinal adjuster as claimed in claim 1 , wherein a second end of the spring element is supported on the transmission rod.

11. The longitudinal adjuster as claimed in claim 10 , wherein a second end of the spring element is supported on the transmission rod at a contact point.

12. The longitudinal adjuster as claimed in claim 1 , wherein a center axis of the transmission rod is arranged offset downward in the vertical direction with respect to a center axis evil of a connecting region of an unlocking lever.

13. The longitudinal adjuster as claimed in claim 1 , further comprising adapters, wherein the transmission rod is operatively connected to the locking devices via the adapters, and at least one of the adapters is connected to the transmission rod and/or to the actuating device in a force-fitting or integrally bonded manner.

14. A vehicle seat having a longitudinal adjuster comprising:
at least two pairs of rails, each pair of rails being formed from a lower rail and an upper rail, wherein the lower and upper rails mutually engage each other and are movable relative to each other in a longitudinal direction;
two locking devices, wherein the lower and upper rails and are each lockable to each other by means of one of the two locking devices;
an actuating device for the mutual actuation of the two locking devices, the actuating device comprising a transmission rod arranged between the two locking devices, and a handle, which is connected to the transmission rod, wherein the transmission rod is operatively connected to the two locking devices; and
a spring element acting upon the actuating device with a spring force in a direction of an inoperative position or passive position, wherein the spring element does not protrude over the locking device in a vertical direction and acts upon the transmission rod along a longitudinal extent thereof with a torque relative to the longitudinal direction;
wherein the spring element lies against the longitudinal adjuster at five contact points and the spring element is supported via the five contact points.

15. The vehicle seat as claimed in claim 14 , wherein the transmission rod is shifted downward such that the transmission rod and the actuating device do not protrude over the locking device in the vertical direction.

16. The vehicle seat as claimed in claim 14 , wherein the actuating device has a receptacle, provided by the handle, for the spring element.

17. The vehicle seat as claimed in claim 14 , wherein a first end of the spring element is supported on the upper rail at a contact point.

18. The vehicle seat as claimed in claim 14 , wherein the longitudinal adjuster further comprises adapters, wherein the transmission rod is operatively connected to the locking devices via the adapters, and at least one of the adapters is force-fit and/or integral bond connected to the transmission rod and/or to the actuating device.

Assignees

• Adient Luxembourg Holding Sarl

Inventors

• Sprenger Erik
• Kuzma Martin
• Farkas Pavol

Classifications

• B60N2/0818 Primary

  inside the rail · CPC title

• B60N2/075

  roller-less · CPC title

• B60N2/085 Primary

  about a transversal axis · CPC title

• B60N2/0881

  Activation of the latches by the control mechanism · CPC title

• B60N2/0875

  in a vertical direction · CPC title