Recliner

Patent metadata

Field	Value
Publication number	US-11059397-B1
Application number	US-201917056294-A
Country	US
Kind code	B1
Filing date	May 14, 2019
Priority date	May 23, 2018
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A recliner according to one aspect of the present disclosure includes a plate-shaped ratchet, at least one pawl, a plate-shaped guide member, and a ratchet seating portion. The ratchet seating portion is provided on the guide member to be positioned on an inner peripheral side of a second flange and between two guide walls adjacent to each other in a circumferential direction on the guide member. The ratchet seating portion protrudes toward the first flange of the ratchet and is configured to come into sliding contact with a tip of the first flange.

First claim

The invention claimed is:

1. A recliner rotatably coupling a seatback to a seat cushion, the recliner comprising:
a plate-shaped ratchet having a first flange on an outer periphery of the ratchet, the flange being provided with a first protrusion-depression on an inner peripheral surface of the first flange;
at least one pawl having a second protrusion-depression that is meshable with the first protrusion-depression, the at least one pawl being configured to be movable between a meshed position and a separated position, the meshed position being where the at least one pawl meshes with the first protrusion-depression, and the separated position being spaced apart from the meshed position;
a plate-shaped guide member having:
two or more guide walls configured to come into sliding contact with the at least one pawl so as to guide a movement of the at least one pawl and so as to restrict the at least one pawl from moving in a circumferential direction; and
a second flange provided on an outer periphery of the guide member and protruding toward the ratchet; and

a ratchet seating portion protruding toward the first flange and being configured to come into sliding contact with a tip of the first flange, the ratchet seating portion being provided on the guide member to be positioned on an inner peripheral side of the second flange, and the ratchet seating portion being provided between, among the two or more guide walls, two guide walls adjacent to each other in the circumferential direction.

2. The recliner according to claim 1 ,
wherein the at least one pawl comprises two or more pawls,
wherein the two or more pawls are disposed at equal intervals in the circumferential direction,
wherein the two or more pawls comprise:
a first pawl; and
a second pawl adjacent to the first pawl in the circumferential direction,

wherein the two or more guide walls comprise:
a first guide wall configured to come into sliding contact with the first pawl; and
a second guide wall disposed adjacent to the first guide wall and configured to come into sliding contact with the second pawl, and

wherein the ratchet seating portion is provided between the first guide wall and the second guide wall in the circumferential direction.

Assignees

• Toyota Boshoku Kk

Inventors

• Yamakita Yuta

Classifications

• B60N2/236 Primary

  linearly movable · CPC title

• B60N2/225

  by cycloidal or planetary mechanisms · CPC title

• B60N2/2356

  with internal pawls · CPC title

• B60N2/2362

  rotatably movable · CPC title

• B60N2/224 Primary

  Stepwise movement mechanisms, e.g. ratchets · CPC title