Vehicle seat

Patent metadata

Field	Value
Publication number	US-9789787-B2
Application number	US-201414783700-A
Country	US
Kind code	B2
Filing date	Apr 11, 2014
Priority date	Apr 15, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A vehicle seat, in particular rear seat or rear bench, including a seat part, a backrest pivotally articulated to the seat part, whose position is variable between an upright seating or use position and a loading position folded forwards in direction of the seat part, a locking device arresting the backrest in the seating position, an unlocking device for unlocking the locking device for folding the backrest forwards from the seating position into the loading position, and an electromotive driving device for erecting the backrest from the loading position into the seating position. The unlocking device includes a manually actuatable release element and an electrically activatable unlocking means, so that electromotive erection or a fast manual erection of the backrest of a vehicle seat from the loading position into the upright seating is possible.

First claim

The invention claimed is:

1. A vehicle seat, in particular rear seat or rear bench, comprising a seat part, a pivotable backrest whose position is variable between an upright seating or use position and a loading position folded down in a direction of the seat part, a locking device arresting the backrest in the upright seating position, an unlocking device for unlocking the locking device, and an electromotive driving device for erecting the backrest from the loading position into the upright seating or use position, wherein the backrest is erectable erected from the loading position into the upright seating position manually and via the electromotive driving device and wherein the unlocking device includes a manually actuatable release element and an electrically activatable unlocking mechanism so that an electromotive actuation of the erection of the backrest by the electromotive driving device is decoupled from a manual actuation of the erection of the backrest, thereby allowing electromotive actuation of the erection of the backrest and, independent thereof, manual actuation for the manual erection of the backrest.

2. The vehicle seat according to claim 1 , wherein the electrically activatable unlocking mechanism is actuatable via the electromotive driving device.

3. The vehicle seat according to claim 2 , wherein the electromotive driving device is configured to be activated in a first direction of rotation and in a second direction of rotation and wherein the electromotive driving device is configured to activate the unlocking mechanism in the first direction of rotation and is configured to erect the backrest from the loading position into the upright seating position in the second direction of rotation.

4. The vehicle seat according to claim 1 , wherein the unlocking mechanism includes an unlocking lever rotatable about a lever axis with a control arm actuatable by the electromotive driving device and an unlocking arm configured to release the locking device.

5. The vehicle seat according to claim 4 , wherein the unlocking lever includes a switching arm for manually unlocking the locking device.

6. The vehicle seat according to claim 4 , wherein the unlocking arm rests against a locking pin of the locking device, the locking pin being in a locking link of the locking device such that upon actuation of the unlocking device the locking pin is transferred from a locking position into an unlocking position for releasing the locking device.

7. The vehicle seat according to claim 6 , wherein after unlocking the locking pin the unlocking arm is configured to be moved back into a starting position and wherein the locking pin remains in the unlocking position until the backrest is guided back into the seating position and locked.

8. The vehicle seat according to claim 1 , wherein the release element comprises a Bowden cable connected with the locking device and a switching element, upon whose actuation the locking device releases the backrest for folding down from the seating position into the loading position.

9. The vehicle seat according to claim 1 , wherein the electromotive driving device includes an electric motor, a drive pinion connected with the electric motor, and a tooth segment meshing with the drive pinion, articulated to the seat part, and pivotable about a tooth segment axle, wherein a control cam for actuating the unlocking lever and an entraining element for erecting the backrest from the loading position into the seating position protrude from the tooth segment.

10. The vehicle seat according to claim 9 , wherein the backrest is articulated to a backrest axle connected with the seat part and is connected with a lifting device for erecting the backrest from the loading position into the seating position via a connecting tab articulation arranged at a distance to the backrest axle in a folding direction of the backrest.

11. The vehicle seat according to claim 10 , wherein the lifting device includes a lifting tab articulated to the seat part, wherein the lifting tab is configured to be engaged by the entraining element of the tooth segment for erecting the backrest from the loading position into the seating position, and a connecting tab which is connected with the backrest via the connecting tab articulation and which is articulated to the lifting tab via a lifting bolt.

12. The vehicle seat according to claim 11 , wherein the lifting bolt extends through an oblong hole and is configured to cooperate with a latch of the locking device.

13. The vehicle seat according to claim 1 , wherein the backrest is pretensioned in a direction of the loading position by a pretensioning mechanism.

14. The vehicle seat according to claim 13 , wherein the pretensioning mechanism pretensioning the backrest into the loading position comprises a backrest spring acting between the seat part and the backrest.

15. A vehicle seat, in particular rear seat or rear bench, comprising a seat part, a pivotable backrest whose position is variable between an upright seating or use position and a loading position folded down in direction of the seat part, a locking device arresting the backrest in the upright seating position, an unlocking device for unlocking the locking device, and an electromotive driving device for erecting the backrest from the loading position into the seating or use position, wherein the unlocking device includes a manually actuatable release element and an electrically activatable unlocking mechanism,
wherein the electromotive driving device includes an electric motor, a drive pinion connected with the electric motor and a tooth segment meshing with the drive pinion, articulated to the seat part, and pivotable about a tooth segment axle, wherein a control cam for actuating the unlocking lever and an entraining element for erecting the backrest from the loading position into the seating position protrude from the tooth segment,
wherein the backrest is articulated to a backrest axle connected with the seat part and is connected with a lifting device for erecting the backrest from the loading position into the seating position via a connecting tab articulation arranged at a distance to the backrest axle in a folding direction of the backrest,
wherein the lifting device includes a lifting tab articulated to the seat part, the lifting tab being configured to be engaged by the entraining element of the tooth segment for erecting the backrest from the loading position into the seating position, and a connecting tab which is connected with the backrest via the connecting tab articulation and which is articulated to the lifting tab via a lifting bolt.

16. A vehicle seat, in particular rear seat or rear bench, comprising a seat part, a pivotable backrest whose position is variable between an upright seating or use position and a loading position folded down in direction of the seat part, a locking device arresting the backrest in the upright seating position, an unlocking device for unlocking the locking device, and an electromotive driving device for erecting the backrest from the loading position into the seating or use position, wherein the unlocking device includes a manually actuatable release element and an electrically activatable unlocking mechanism,
wherein the unlocking device includes an unlocking lever rotatable about a lever axis with a control arm actuatable by the electromotive driving device and an unlocking arm configured to release the locking device,
wherein the unlocking arm rests against a locking pin of the locking device, the locking pin being in a locking link of the locking device such that upo

Assignees

• Brose Fahrzeugteile

Inventors

• Wladimirow Katharina
• Sorriento Andreas
• Ellermann Lars
• Hofmann Jochen

Classifications

• B60N2/2252

  in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear · CPC title

• B60N2/36

  into a loading platform {(B60N2/065 takes precedence)} · CPC title

• B60N2/2213

  Gear wheel driven mechanism (B60N2/2231, B60N2/225 take precedence) · CPC title

• B60N2/2356

  with internal pawls · CPC title

• B60N2/206

  to a position in which it can be used as a support for objects, e.g. as a tray · CPC title