Vehicle seat having an adjustment function

Patent metadata

Field	Value
Publication number	US-2020189435-A1
Application number	US-201916716897-A
Country	US
Kind code	A1
Filing date	Dec 17, 2019
Priority date	Dec 18, 2018
Publication date	Jun 18, 2020
Grant date	—

Abstract

The invention relates to a vehicle seat having a seat part and a backrest part comprising a first backrest portion and a second backrest portion arranged above it in the seat height direction, wherein the second backrest portion is displaceable relative to the first backrest portion by means of a displacement movement directed at least in the seat width direction, wherein in a first displaced position of the second backrest portion a mechanical interaction is formed between the first backrest portion and the second backrest portion, which secures the first displaced position of the second backrest portion and which can be released by means of a force exerted on the second backrest portion and acting in the direction of the displacement movement.

First claim

1 . A vehicle seat having a seat part and a backrest part which comprises a first backrest portion and a second backrest portion arranged above said first backrest portion in a seat height direction, wherein the second backrest portion is displaceable relative to the first backrest portion by means of a displacement movement directed at least in a seat width direction, wherein,
in a first displaced position of the second backrest portion, a mechanical interaction is formed between the first backrest portion and the second backrest portion, which secures the first displaced position of the second backrest portion and which can be released by means of a force exerted on the second backrest portion and acting in the direction of the displacement movement.

2 . The vehicle seat according to claim 1 , wherein a locking device is provided which comprises a first locking portion arranged on the first backrest portion and a second locking portion arranged on the second backrest portion, wherein the first locking portion comprises a curve slot having guide curve portions within which a first end of a hook member of the second locking portion is guidable, and having a locking position at which the hook member is lockable.

3 . The vehicle seat according to claim 2 , wherein the hook member of the second locking portion is pivotably mounted by means of a second end around an axis which, in the first displaced position of the second backrest portion, is arranged preferably perpendicularly to the curve slot.

4 . The vehicle seat according to claim 1 , wherein a reset device is provided which comprises an energy-storing member connected to the first backrest portion and the second backrest portion, said energy-storing member being adapted and formed in such a manner that a first amount of energy provided from the displacement movement of the second backrest portion relative to the first backrest portion is stored and provided in order to perform a backwards displacement movement of the second backrest portion relative to the first backrest portion.

5 . The vehicle seat according to claim 4 , wherein the energy-storing member is in the form of a spring member, for example a band spring member or a tension spring member.

6 . The vehicle seat according to claim 1 , wherein a damping device is arranged between the first backrest portion and the second backrest portion, said damping device being adapted and formed to dissipate an excess second amount of energy provided during the backwards displacement movement of the second backrest portion relative to the first backrest portion.

7 . The vehicle seat according to claim 2 , wherein a fastening member of the energy-storing member, the first locking portion and/or the damping device are mounted and/or rigidly arranged relative to one another on a common mounting member connected to the first backrest portion.

8 . The vehicle seat according to claim 1 , wherein the second backrest portion is fastened to the first backrest portion by means of a guide device, wherein the displacement movement of the second backrest portion can be performed by means of the guide device.

9 . The vehicle seat according to claim 7 , wherein the guide device comprises the mounting member and two rod-shaped guide members arranged at a distance from one another in the seat height direction, wherein the mounting member is mounted sliding and/or rolling relative to at least one of the guide members.

Assignees

• Grammer Ag

Inventors

• Ruidisch Michael

Classifications

• B60N2/2245 Primary

  provided with a lock mechanism on the upper part of the back-rest · CPC title

• B60Y2200/15

  Fork lift trucks, Industrial trucks · CPC title

• B60Y2200/221

  Tractors · CPC title

• B60N2/20

  the back-rest being tiltable, e.g. to permit easy access (B60N2/04, B60N2/22 {, B60N2/3002} take precedence) · CPC title

• B60Y2200/41

  Construction vehicles, e.g. graders, excavators · CPC title