Vehicle seat and utility motor vehicle comprising a vehicle seat

Patent metadata

Field	Value
Publication number	US-9283871-B2
Application number	US-201414278190-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	Jun 26, 2013
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

The invention relates to a vehicle seat, in particular a utility motor vehicle seat, having a seat part, having a backrest comprising a lower backrest part and an upper backrest part, and having a holding device, by means of which the upper backrest part is mounted displaceably with respect to the lower backrest part, wherein the holding device comprises a guide device, by means of which the upper backrest part can be linearly displaced along a displacement curve laterally past at least one side edge of the lower backrest part in such a way that the upper backrest part can also be rotated about the displacement curve and/or about a transverse axis extending in a transverse manner to the displacement curve during the lateral displacement.

First claim

What is claimed is:

1. A vehicle seat, in particular a utility motor vehicle seat, comprising:
a seat part comprising:
a backrest that includes a lower backrest part positioned below an upper backrest part; and
a holding device to which the upper backrest part is mounted such that the upper backrest part is displaceable relative to the lower backrest part, wherein the holding device comprises a guide device which enables the upper backrest part to laterally displace along a displacement curve towards at least one side edge of the lower backrest part, wherein the guide device comprises a first guide element which is arranged above and at a distance from a second guide element, wherein the first guide element forms a first curved path and the second guide element forms a second curved path, and wherein the first and the second curved paths are arranged with an axial offset that increases from a first end of the first and second guide elements to a second end of the first and second guide elements along the displacement curve, causing the upper backrest part to rotate about a substantially horizontal axis during the lateral displacement.

2. The vehicle seat according to claim 1 , wherein the substantially horizontal axis is transverse to the displacement curve.

3. The vehicle seat according to claim 1 , wherein the guide device is configured helically at least in part and comprises one or more guide elements which are arranged extending helically around the displacement curve.

4. The vehicle seat according to claim 1 , wherein the guide device comprises a holding element having at least one of a slide bearing and a roller bearing.

5. The vehicle seat according to claim 4 , wherein the guide device comprises at least one of a rod element and a tube element which is arranged inside the upper backrest part and is received in the at least one of a slide bearing and a roller bearing in the holding element.

6. The vehicle seat according to claim 1 , wherein the guide device comprises sliding bearing elements and/or roller bearing elements which are arranged on the lower backrest part and on which rod and/or tube elements are guided in a transverse manner to the primary seating direction.

7. The vehicle seat according to claim 1 , wherein the displacement curve is arranged extending in a transverse manner to the primary seating direction of the vehicle seat.

8. The vehicle seat according to claim 1 , wherein the upper backrest part is a backrest cushion element.

9. The vehicle seat according to claim 1 , wherein the upper backrest part is configured as an additional driver torso support device, which can be arranged outside the seat part and the backrest, which can temporarily be arranged at least in part in a support region which is otherwise free from vehicle seat at the level of the region of the upper half of the backrest and laterally off-centre from the backrest, the additional driver torso support device being arranged displaceably from a parked position into an additional support position in the support region which is otherwise free from vehicle seat by means of a displacement device.

10. A utility motor vehicle, in particular an agricultural utility motor vehicle, comprising at least one vehicle seat, characterised by a vehicle seat according to claim 1 .

11. A vehicle seat, comprising:
a seat part;
a backrest, including:
a lower backrest part;
an upper backrest part;

a holding device connected to the lower backrest part, wherein the upper backrest part is mounted displaceable to the lower backrest part by the holding device, wherein the upper backrest part is linearly displaceable laterally along an imaginary displacement curve past at least one side edge of the lower backrest part while the lower backrest part remains stationary with respect to the seat part, wherein the imaginary displacement curve is arranged in a plane defined by a direction of a lateral extension of the vehicle seat and a direction of a longitudinal extension of the vehicle seat;
a guide device, the guide device including:
at least first and second guide elements, wherein the first and second guide elements are positioned such that at least a portion of the first guide element is arranged with an axial offset that increases from a first end of the first and second guide elements to a second end of the first and second guide elements; and
a second holding device, wherein the second holding device is mounted to the holding device connected to the lower backrest part, wherein the second holding device is connected to the upper backrest part by the first and second guide elements, wherein the first and second guide elements move with the upper backrest part as the upper backrest part is displaced laterally relative to the lower backrest part, and wherein the guide device defines the imaginary displacement curve.

Assignees

• Grammer Ag

Inventors

• Uebelacker Roland

Classifications

• B60N2/4867

  Operations & Transport · mapped topic

• B60N2/2222 Primary

  the back-rest having two or more parts · CPC title

• B60N2002/0212

  the seat or seat part turning about or moving along a longitudinal axis · CPC title

• B60N2/2209

  by longitudinal displacement of the cushion, e.g. back-rest hinged on the bottom to the cushion and linked on the top to the vehicle frame · CPC title

• B60N2002/0216

  the seat or seat part turning about or moving along a transversal axis · CPC title