Vehicle seat and armrest thereof

Patent metadata

Field	Value
Publication number	US-2026001465-A1
Application number	US-202519249344-A
Country	US
Kind code	A1
Filing date	Jun 25, 2025
Priority date	Jun 28, 2024
Publication date	Jan 1, 2026
Grant date	—

Abstract

The present invention provides a structure that: prevents wear of a motor and a gear; reduces time and effort required to replace or repair either the motor or the gear when it is broken due to an excessive input; and facilitates the adjustment in the speed and the motion range of the armrest. An armrest is provided which comprises: an armrest frame attached rotatably about a rotation axis of a seat frame of a seatback; a sector gear integrated with the seat frame; sector gear teeth provided with respect to the sector gear; a motor having a pinion gear meshed with the sector gear teeth; a motor unit including the motor; and a fastening member for fastening the motor unit to the armrest frame.

First claim

What is claimed is:

1 . An armrest of a vehicle seat, the armrest comprising:
an armrest frame attached rotatably about a rotation axis of a seat frame of a seatback; a sector gear integrated with the seat frame; sector gear teeth provided with respect to the sector gear; a motor having a pinion gear meshed with the sector gear teeth; a motor unit including the motor; and a fastening member for fastening the motor unit to the armrest frame.

2 . The armrest according to claim 1 , wherein the pinion gear is attachable to and detachable from the motor unit.

3 . The armrest according to claim 2 , wherein the pinion gear is attachable to and detachable from the motor unit along an axial direction of the rotation axis.

4 . The armrest according to claim 1 , further comprising: a sector gear hole provided with respect to the sector gear; and a stopper pin provided with respect to the armrest frame such that part of the stopper pin is engaged with the sector gear hole.

5 . The armrest according to claim 4 , wherein the sector gear hole is provided in an arc shape about the rotation axis.

6 . The armrest according to claim 1 , wherein the sector gear is integrated with the seat frame through a base frame interposed between the armrest frame and the seat frame.

7 . The armrest according to claim 6 , wherein the sector gear is fixed to a shaft part of the base frame.

8 . The armrest according to claim 7 , wherein the base frame is fixed to the seat frame using a bracket that is arranged so as to sandwich the seat frame with the base frame.

9 . The armrest according to claim 1 , further comprising a switch that normally rotates, reversely rotates, or stops the motor.

10 . The armrest according to claim 9 , wherein the switch is provided in a leading end part of the armrest frame, the leading end part facing in a direction of travel of a vehicle.

11 . The armrest according to claim 1 , further comprising one or both of an armrest pad and an armrest trim.

12 . A vehicle seat comprising the armrest according to claim 1 .

Assignees

• Tachi S Co

Inventors

• Fukushima Hiroshi
• Suzuki Shogo

Classifications

• B60N2/02253

  characterised by the transmission between the electric motor and the seat or seat parts · CPC title

• B60N2/773

  Longitudinal adjustment · CPC title

• B60N2/77

  Height adjustment · CPC title

• B60N2/753

  movable to an inoperative position · CPC title

• B60N2/767 Primary

  Angle adjustment · CPC title