# US 11,999,276 B2 · Vehicle seat

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- Number: US 11,999,276 B2
- Document ID: US11999276B2
- Status: Granted
- Kind: B2
- Application number: 17/967,179
- Filed: 2022-10-17
- Published: 2023-04-27
- Granted: 2024-06-04
- Earliest claimed: 2021-10-22
- Assignees: Toyota Boshoku Kabushiki Kaisha
- Applicants: Toyota Boshoku Kabushiki Kaisha
- Inventors: Yoshihiro Murase; Yuki Kawabata
- Web page: https://patentgrep.com/patent/US11999276B2

## CPC

- B60N 2/42745: {of the back-rest (B60N2/433 takes precedence; higher part of the back-rest moving together with the headrest B60N2/888)}
- B60N 2/015: Attaching seats directly to vehicle chassis
- B60N 2/36: into a loading platform {(B60N2/065 takes precedence)}
- B60N 2/68: Seat frames
- B60N 2/4221: {due to impact coming from the front}
- B60N 2/4228: {due to impact coming from the rear}
- B60N 2/42709: {involving residual deformation or fracture of the structure}
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR

## Abstract

In a structure in which a lower arm is fixed to a vehicle, provided is a vehicle seat that can reduce an impact applied to a recliner. One aspect of the present disclosure is a vehicle seat including a lower arm and a recliner. The lower arm includes an arm body to which the recliner is attached, a first fixing portion to be attached to the vehicle in a lower position, and a second fixing portion attached to the vehicle in a rear position. The arm body includes a first recess arranged between the recliner and the first fixing portion in an up-down direction, the first recess extending from an edge of the arm body, and a second recess arranged between the recliner and the second fixing portion in a front-rear direction, the second recess extending from the edge of the arm body.

## Claims

### Claim 1

A vehicle seat comprising:
a seat cushion;
a seatback pivotable in a seat front-rear direction relative to the seat cushion;
a back frame supporting the seatback;
a first lower arm configured to be attached to a vehicle; and
a recliner connected to the back frame and the first lower arm, the recliner being configured to cause the back frame to pivot in the seat front-rear direction relative to the first lower arm,
wherein the first lower arm includes
an arm body having a plate shape and having the recliner attached thereto,
a first fixing portion configured to be attached to the vehicle in a position below the recliner, and
a second fixing portion configured to be attached to the vehicle in a position on a seat rear side relative to the recliner,
wherein the arm body includes
a first recess arranged between the recliner and the first fixing portion in an up-down direction, the first recess extending from an edge of the arm body toward an internal area of the arm body, the first recess being recessed in a seat-width direction, and
a second recess arranged between the recliner and the second fixing portion in the seat front-rear direction, the second recess extending from the edge of the arm body toward the internal area of the arm body, the second recess being recessed in the seat-width direction.

### Claim 2 (depends on 1)

The vehicle seat according to claim 1, further comprising
a second lower arm connected to the back frame in a position separated from the first lower arm in the seat-width direction, and
a rod connecting the first lower arm and the second lower arm in the seat-width direction,
wherein at least a part of the first recess is arranged above the rod.

### Claim 3 (depends on 1)

The vehicle seat according to claim 1,
wherein in the arm body, the first recess is recessed inward in the seat-width direction.

### Claim 4 (depends on 1)

The vehicle seat according to claim 1,
wherein in the arm body, the second recess is recessed outward in the seat-width direction.

### Claim 5 (depends on 1)

The vehicle seat according to claim 1,
wherein the first recess and the second recess each have a shape in which a width and a depth are increased toward the edge of the arm body.