# US 2021/0276460 A1 · Vehicle seat

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2021/0276460 A1
- Document ID: US20210276460A1
- Status: Published application
- Kind: A1
- Application number: 17/183,359
- Filed: 2021-02-24
- Published: 2021-09-09
- Earliest claimed: 2020-03-03
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Satoshi AJISAKA
- Web page: https://patentgrep.com/patent/US20210276460A1

## CPC

- B60N 2/14: rotatable, e.g. to permit easy access (B60N2/10 {, B60N2/2869} take precedence)
- B60N 2/7047: {Springs}
- B60N 2002/0055: {characterised by special measures to ensure that no seat or seat part collides, during its movement, with other seats, seat parts or the vehicle itself}
- B60N 2002/022: {the seat or seat part turning about or moving along a vertical axis}
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR

## Abstract

A vehicle seat includes: a seat cushion having a seat cushion body and a seat cushion front portion, the seat cushion front portion being provided in front of the seat cushion body and configured to be in contact with and distanced from the seat cushion body, and the seat cushion being configured to be rotated so as to be set to a traveling position facing a front of a vehicle and an ingress and egress position facing a side door; and an expansion and contraction mechanism configured such that the seat cushion front portion is brought into contact with the seat cushion body as the seat cushion rotates from the traveling position to the ingress and egress position, and the seat cushion front portion is distanced away from the seat cushion body as the seat cushion rotates from the ingress and egress position to the traveling position.

## Claims

### Claim 1

A vehicle seat comprising:
a seat cushion having a seat cushion body and a seat cushion front portion, the seat cushion front portion being provided in front of the seat cushion body and configured to be in contact with and distanced from the seat cushion body, and the seat cushion being configured to be rotated so as to be set to a traveling position facing a front of a vehicle and an ingress and egress position facing a side door; and
an expansion and contraction mechanism configured such that the seat cushion front portion is brought into contact with the seat cushion body as the seat cushion rotates from the traveling position to the ingress and egress position, and the seat cushion front portion is distanced away from the seat cushion body as the seat cushion rotates from the ingress and egress position to the traveling position.

### Claim 2 (depends on 1)

The vehicle seat according to claim 1, wherein the expansion and contraction mechanism is a cam mechanism.

### Claim 3 (depends on 1)

The vehicle seat according to claim 1, wherein the expansion and contraction mechanism includes:
a cam portion provided in a support member that is non-rotatable and supports the seat cushion such that the seat cushion is rotatable with respect to the support member;
a receiving surface portion provided in the seat cushion front portion and with which the cam portion is brought into contact; and
an urging member that urges the seat cushion front portion toward the seat cushion body.

### Claim 4 (depends on 3)

The vehicle seat according to claim 3, wherein the expansion and contraction mechanism further includes a support rod joined to the receiving surface portion and to which the urging member is connected.

### Claim 5 (depends on 3)

The vehicle seat according to claim 3, wherein the urging member is composed of a coil spring.

### Claim 6 (depends on 4)

The vehicle seat according to claim 4, wherein the urging member is composed of a coil spring.

### Claim 7 (depends on 6)

The vehicle seat according to claim 6, wherein a first end of the coil spring is attached to the support rod, and a second end of the coil spring is attached to the seat cushion body.

### Claim 8 (depends on 3)

The vehicle seat according to claim 3, wherein the receiving surface portion is composed of an iron plate.