Vehicle seat having a drive device
A vehicle seat having a drive device for driving a adjustment kinematics of the vehicle seat may have an adjustment arm, and a tensioning device. The drive device may have a pinion which can be rotated about a pinion rotation axis and which is in toothed engagement with a tooth segment of the adjustment arm. The tensioning device pretensions the adjustment arm so that the tooth segment is pretensioned in the direction of the pinion. The tensioning device has at least one sliding element which is in abutment with the adjustment arm. During an actuation of the height adjustment kinematics, the at least one sliding element slides along the adjustment arm. The sliding element is resiliently pretensioned by a resilient element.
1. A vehicle seat having a drive device for driving adjustment kinematics of the vehicle seat, comprising:
an adjustment arm, and
a tensioning device,
wherein the drive device has a pinion which can be rotated about a pinion rotation axis and which is in toothed engagement with a tooth segment of the adjustment arm,
wherein the tensioning device pretensions the adjustment arm in such a manner that the tooth segment is pretensioned in the direction of the pinion,
wherein the tensioning device has at least one sliding element which is in abutment with the adjustment arm,
wherein, during an actuation of the height adjustment kinematics, the at least one sliding element slides along the adjustment arm,
wherein the sliding element is resiliently pretensioned by a resilient element,
wherein the sliding element is produced from a resilient material, and
wherein the resilient element is a pressure piece of elastomer material,
wherein a height adjustment kinematics can be driven by the drive device and in that the height adjustment kinematics has a base, a side portion, a front link and a rear link,
wherein the base, the side portion, the front link and the rear link form four coupling members of a four-bar arrangement, wherein a first pivot joint pivotably connects the base to the rear link, a second pivot joint pivotably connects the rear link to the side portion, a third pivot joint pivotably connects the side portion to the front link and a fourth pivot joint pivotably connects the front link to the base,
wherein a region of the adjustment arm facing away from the tooth segment is articulated in an eccentric manner with respect to the pivot joints to one of the coupling members and the drive device is articulated to another of the coupling members.
2. The vehicle seat according to claim 1 , wherein the sliding element is produced from a spring steel.
3. The vehicle seat according to claim 2 , wherein the sliding element is bent from a spring wire or a spring sheet.
4. The vehicle seat according to claim 1 , wherein the sliding element has a first end region and a second end region, the first end region is supported by way of a first support device on a structural component of the vehicle seat, including on a side portion of a seat frame, and the second end region is supported by way of a second support device on the structural component of the vehicle seat, including on the side portion of the seat frame.
5. The vehicle seat according to claim 4 , wherein the sliding element has, between the first end region and the second end region, a contact region for abutment with the adjustment arm.
6. The vehicle seat according to claim 5 , wherein the contact region is in abutment with the adjustment arm.
7. The vehicle seat according to claim 6 , wherein the contact region, in a pretensioned state by the resilient element, is in abutment with the adjustment arm.
8. The vehicle seat according to claim 1 , wherein the region of the adjustment arm facing away from the tooth segment is articulated to the rear link and the drive device, and also the tensioning device, are secured to the side portion.