Vehicle seat and utility motor vehicle comprising a vehicle seat
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, the holding device comprising a guide roller device, by means of which the upper backrest part is arranged laterally displaceably with respect to the lower backrest part along a displacement curve so as to mount the upper backrest part displaceably at least in part past the side edge of the lower backrest part.
1. A vehicle seat, comprising:
a seat part,
a backrest comprising a lower backrest part and an upper backrest part,
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 roller device, by means of which the upper backrest part is arranged to be laterally displaceable with respect to the lower backrest part along a displacement curve so as to mount the upper backrest part displaceably at least in part past a side edge of the lower backrest part, and
wherein the guide roller device is configured so that the upper backrest part additionally rotates about at least a portion of the displacement curve and about a transverse axis extending in a transverse manner to the displacement curve, during the lateral displacement.
2. The vehicle seat according to claim 1 , wherein the guide roller device is configured helically at least in part.
3. The vehicle seat according to claim 1 , wherein the guide roller device comprises two guide elements arranged above and at a distance from one another, one of the guide elements being positioned differently from the other guide element on the path of the displacement curve.
4. The vehicle seat according to claim 3 , wherein at least one of the guide elements is a circular rod.
5. The vehicle seat according to claim 1 , wherein the guide roller device comprises a roller element arrangement for guiding a guide element having one or more locating bearing roller elements and having one or more floating bearing roller elements.
6. The vehicle seat according to claim 1 , wherein the guide roller device comprises a roller element arrangement for guiding a guide element having two locating bearing roller elements and at least one floating bearing roller element, or vice versa.
7. The vehicle seat according to claim 1 , wherein the guide roller device comprises a roller holding apparatus, on which roller element arrangements are mounted for guiding at least two guide elements arranged side by side and at a distance from one another.
8. The vehicle seat according to claim 7 , wherein at least one of the guide elements is guided by means of a roller arrangement of three identical concavely formed roller elements.
9. The vehicle seat according to claim 1 , wherein the guide roller device comprises at least two guide paths spaced apart from one another for guiding at least two guide elements arranged side by side and at a distance from one another.
10. A utility motor vehicle, comprising at least one vehicle seat, characterised by a vehicle seat according to claim 1 .