Vehicle seat with walk-in mechanism

Patent metadata

Field	Value
Publication number	US-10632875-B2
Application number	US-201716093646-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	May 20, 2016
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

The purpose of the present invention is to provide, in a vehicle seat having a walk-in mechanism, a locking mechanism for a seat back with which rotation of a lock plate can be suppressed against impact in any direction, and with which the locked state can be more reliably retained. In order to achieve the foregoing, provided is a vehicle seat having a walk-in mechanism, wherein: a reclining unit having the walk-in mechanism comprises a swing plate and latch for locking a seat back at a seated posture position; the latch has a structure that rotates about a latch rotating shaft, locks rotation of the seat back by meshed engagement with the swing plate, and releases the lock when the meshed engagement with the swing plate comes out; and the latch is given a structure with which a counter plate is added to the opposite side from the position of meshed engagement with the swing plate, relative to the latch rotating shaft, and the center-of-gravity position of the latch is brought close to the center of rotation of the latch.

First claim

The invention claimed is:

1. A vehicle seat with a walk-in mechanism, comprising:
a reclining unit that includes the walk-in mechanism,
wherein the reclining unit includes a swing plate and a latch for locking a seat back at a seating posture position,
the seat back has a lever connected to the latch at a shoulder,
the latch is disposed closer to the lever than the swing plate is to the lever,
the latch has a structure that turns about a latch rotation shaft, locks the turning of the seat back by engaging with the swing plate, the latch is lifted by pulling up the lever connected to the latch, and releases the lock by disengaging from the swing plate, and
the latch has a structure in which a counter plate is added on an opposite side of a position where the latch engages with the swing plate with respect to the latch rotation shaft and on an opposite side of a side where the lever is connected so that a position of a center of gravity of the latch is close to a rotational center of the latch.

2. The vehicle seat with the walk-in mechanism according to claim 1 ,
wherein the counter plate is integral with the latch.

3. The vehicle seat with the walk-in mechanism according to claim 1 ,
wherein the counter plate is made of a material different from a material of the latch.

4. The vehicle seat with the walk-in mechanism according to claim 1 ,
wherein the latch has a hole for weight reduction.

5. The vehicle seat with the walk-in mechanism according to claim 1 ,
wherein the position of the center of gravity of the latch approximately matches the rotational center of the latch.

Assignees

• Tachi S Co

Inventors

• Watanabe Akira
• Ohmori Takayuki

Classifications

• B60N2/433 Primary

  Safety locks for back-rests, e.g. with locking bars activated by inertia · CPC title

• B60N2/20

  the back-rest being tiltable, e.g. to permit easy access (B60N2/04, B60N2/22 {, B60N2/3002} take precedence) · 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

• A47C7/407

  of collapsible type · CPC title