Adjustment device for a headrest of a vehicle seat

Patent metadata

Field	Value
Publication number	US-10562425-B2
Application number	US-201815910047-A
Country	US
Kind code	B2
Filing date	Mar 2, 2018
Priority date	Mar 7, 2017
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

An adjusting apparatus for adjusting a vehicle seat component of a vehicle seat comprises an adjustment arrangement for adjusting the vehicle seat component and a locking device. The locking device is coupled to the adjustment arrangement to block movement of the vehicle seat component in a locking position.

First claim

The invention claimed is:

1. An adjusting apparatus for a headrest of a vehicle seat, the adjusting apparatus comprising
a guide device for guiding a headrest support in a vertical direction,
a backrest connection for attachment to a backrest,
a longitudinal adjustment arrangement for adjusting the guide device in the longitudinal direction,
a locking device for locking the adjusting apparatus in both the longitudinal direction and the vertical direction, and
a handle for unlocking the locking device to an unlocking position in which the locking device releases the longitudinal adjustment arrangement in the longitudinal direction and the vertical adjustment arrangement in the vertical direction,
wherein the headrest support is a held headrest support and is configured to be locked in a vertical position by the locking device.

2. The adjusting apparatus of claim 1 , wherein the held headrest support is configured to be adjusted in the vertical position and in the longitudinal position in the unlocking position.

3. The adjusting apparatus of claim 1 , wherein the longitudinal adjustment arrangement includes
a rear link which is pivotably connected in an articulated manner to the backrest connection in a rear lower joint and to the guide device in a rear upper joint, and
a front link which is pivotably connected in an articulated manner to the backrest connection in a front lower joint and to the guide device in a front upper link, and
wherein a longitudinal position of the guide device is configured to be adjusted with pivoting of the guide device forward and downward, by pivoting the links.

4. The adjusting apparatus of claim 2 , wherein the longitudinal adjustment arrangement includes:
a rear link which is pivotably connected in an articulated manner to the backrest connection in a rear lower joint and to the guide device in a rear upper joint, and
a front link which is pivotably connected in an articulated manner to the backrest connection in a front lower joint and to the guide device in a front upper link, and
wherein a longitudinal position of the guide device is configured to be adjusted by pivoting the links.

5. The adjusting apparatus of claim 1 , wherein the locking device includes a locking element which has a longitudinal engagement means for defining the longitudinal position of the guide device in the longitudinal direction and a vertical engagement means for defining the vertical position of the headrest support in the vertical direction, and
wherein the longitudinal engagement means and the vertical engagement means are disengaged when the locking device is adjusted to its unlocking position.

6. The adjusting apparatus of claim 5 , wherein the longitudinal engagement means is formed on a lower region of the locking element and the vertical engagement means is formed on an upper region of the locking element, and the locking element, when it is adjusted to its unlocking position, is pivoted downward by way of its lower region and rearward by way of its upper region.

7. The adjusting apparatus of claim 1 , wherein the handle has a pivotable lever arm with a pivot bearing in the guide device.

8. The adjusting apparatus of claim 1 , wherein the handle is configured to be pivoted into the unlocking position against a spring force of a spring device.

9. The adjusting apparatus of claim 1 , wherein a distance between the upper joints is fixed and a distance between the lower joints is fixed.

10. The adjusting apparatus of claim 9 , wherein the links, the guide device and the backrest connection form a four-joint mechanism with about one degree of freedom for longitudinally adjusting the guide device in relation to the backrest connection by adjustment in the joints.

11. The adjusting apparatus of claim 1 , wherein the rear link is longer than the front link, wherein the rear lower joint is arranged below the front lower joint, and the rear upper joint is arranged above the front upper joint.

Assignees

• Faurecia Autositze Gmbh

Inventors

• Jarrin Clément
• Bulle Hervé
• Kowalski Tomasz
• Hagemann Rainer

Classifications

• B60N2/865 Primary

  providing a fore-and-aft movement with respect to the occupant's head · CPC title

• B60N2/815 Primary

  Release mechanisms, e.g. buttons · CPC title

• B60N2/818

  with stepwise positioning · CPC title

• B60N2/806

  movable or adjustable · CPC title

• B60N2/824

  using springs · CPC title