Motor vehicle seat

Patent metadata

Field	Value
Publication number	US-9902302-B2
Application number	US-201415039193-A
Country	US
Kind code	B2
Filing date	Nov 17, 2014
Priority date	Nov 27, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A motor vehicle seat ( 1 ) includes a backrest ( 3 ) and a headrest ( 2 ) which has a headrest body ( 2.1 ) which contains at least one filling material ( 2.1.2 ). The headrest body ( 2.1 ) is coupled to the backrest ( 3 ) by means of a maintaining element ( 2.2 ). The headrest body ( 2.1 ) can be axially moved automatically with respect to the backrest ( 3 ), at least in areas of a contact surface between a head of a passenger (A) and the headrest body ( 2.1 ). A sliding device ( 5 ) is introduced into at least one section between the maintaining element ( 2.2 ) and the filling material ( 2.1.2 ).

First claim

The invention claimed is:

1. A vehicle seat comprising:
a backrest;
a headrest which comprises a headrest body which has at least one filling material;
a retention element, wherein the headrest body is connected to the backrest via the retention element and the headrest body is automatically axially movable relative to the backrest at least in a region of a contact face between a head of a vehicle occupant and the headrest body; and
a sliding medium provided in at least one portion between the retention element and the filling material such that the filling material is automatically movable with respect to the retention element at least in the region of the contact face in a longitudinal extent of the headrest body, the longitudinal extent extending in a vertical direction of a vehicle.

2. The vehicle seat as claimed in claim 1 , wherein the headrest body is axially movable relative to the backrest at least in the region of the contact face by a force pulse which acts on the backrest or the headrest body or the backrest and the headrest body.

3. The vehicle seat as claimed in claim 1 , wherein the filling material is automatically axially movable relative to the backrest at least in the region of the contact face.

4. The vehicle seat as claimed in claim 1 , wherein the filling material is provided at a front surface or at an upper surface or at a lateral surface or at any combination of a front surface and an upper surface and a lateral surface with at least one recess.

5. The vehicle seat as claimed in claim 1 , wherein the retention element is formed from a predeterminable, flexurally rigid material.

6. The vehicle seat as claimed in claim 1 , further comprising a headrest cover wherein the headrest cover or the filling material is formed at least in the region of the contact face from a resilient material or both the headrest cover and the filling material is formed at least in the region of the contact face from a resilient material.

7. The vehicle seat as claimed in claim 1 , wherein the sliding medium is constructed as a sliding film, a sliding gel or a lubricant.

8. The vehicle seat as claimed in claim 1 , further comprising:
a headrest cover;
an additional sliding medium which is introduced in at least one portion between the filling material and the headrest cover.

9. A vehicle seat comprising:
a backrest;
a headrest comprising a headrest body, the headrest body comprising a filling material;
a retention element, the headrest body being connected to the backrest via the retention element, the headrest body being automatically axially movable relative to the backrest at least in a region of a contact face between a head of a vehicle occupant and the headrest body; and
a sliding medium between the retention element and the filling material, the sliding medium providing a frictional force between the retention element and the filling material, wherein the frictional force maintains the filling material in position during a non-accident state of the headrest, the headrest body being movable relative to the retention element via the sliding medium upon the headrest body receiving a force pulse that is greater than the frictional force in an accident state of the headrest such that the filling material is automatically movable with respect to the retention element at least in the region of the contact face in a longitudinal extent of the headrest body, the longitudinal extent extending in a direction relative to a traveling direction of a vehicle.

10. The vehicle seat as claimed in claim 9 , wherein the headrest body is axially movable relative to the backrest at least in the region of the contact face by the force pulse which acts on the backrest or the headrest body or the backrest and the headrest body.

11. The vehicle seat as claimed in claim 9 , wherein the filling material is automatically axially movable in the vertical direction relative to the backrest at least in the region of the contact face.

12. The vehicle seat as claimed in claim 9 , wherein the filling material is provided at a front surface or at an upper surface or at a lateral surface or at any combination of a front surface and an upper surface and a lateral surface with at least one recess.

13. The vehicle seat as claimed in claim 9 , wherein the retention element is formed from a predeterminable, flexurally rigid material.

14. The vehicle seat as claimed in claim 9 , further comprising a headrest cover, wherein the headrest cover or the filling material is formed at least in the region of the contact face from a resilient material or both the headrest cover and the filling material is formed at least in the region of the contact face from a resilient material.

15. The vehicle seat as claimed in claim 9 , wherein the sliding medium comprises a sliding film, a sliding gel or a lubricant.

16. A vehicle seat comprising:
a vehicle seat structure comprising a backrest, a headrest connected to the backrest and a retention element, the headrest comprising a headrest body, the headrest body comprising a filling material and a sliding medium, the retention element connecting the headrest body to the backrest, the sliding medium being in contact with the retention element and the filling material, the sliding medium reducing a frictional contact force between the retention element and the filling material, wherein the headrest body is automatically axially movable relative to the backrest at least in a region of a contact face between a head of a vehicle occupant and the headrest body upon the headrest receiving a pulse force during a vehicle accident that generates an axial force relative to a longitudinal axis of the backrest that is greater than the frictional contact force such that the filling material is automatically movable with respect to the retention element at least in the region of the contact face in a longitudinal extent of the headrest body, the longitudinal extent extending in a vertical direction of the vehicle seat structure.

17. The vehicle seat as claimed in claim 16 , wherein the headrest body is axially movable relative to the backrest at least in the region of the contact face by the force pulse which acts on the backrest or the headrest body or the backrest and the headrest body.

18. The vehicle seat as claimed in claim 16 , wherein the filling material is automatically axially movable relative to the backrest at least in the region of the contact face.

19. The vehicle seat as claimed in claim 16 , wherein the filling material is provided at a front surface or at an upper surface or at a lateral surface or at any combination of a front surface and an upper surface and a lateral surface with at least one recess.

20. The vehicle seat as claimed in claim 16 , wherein the headrest comprises a headrest cover and another sliding medium, the another sliding medium being in contact with headrest cover and the another sliding medium.

Assignees

• Johnson Controls Tech Co

Inventors

• Hartlaub Silvio

Classifications

• B60N2/806

  movable or adjustable · CPC title

• B60N2002/899

  characterised by structural or mechanical details not otherwise provided for · CPC title

• B60N2/58 Primary

  Seat coverings · CPC title

• B60N2/809 Primary

  vertically slidable · CPC title

• B60N2/888

  with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest · CPC title