# US 11,027,637 B2 · Vehicle seat

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- Number: US 11,027,637 B2
- Document ID: US11027637B2
- Status: Granted
- Kind: B2
- Application number: 16/858,881
- Filed: 2020-04-27
- Published: 2020-08-13
- Granted: 2021-06-08
- Earliest claimed: 2016-03-03
- Assignees: Ts Tech Co., Ltd.
- Applicants: Ts Tech Co., Ltd.
- Inventors: Kazunori Hojo
- Web page: https://patentgrep.com/patent/US11027637B2

## CPC

- B60N 2/7094: {Upholstery springs}
- B60N 2/58: Seat coverings
- B60N 2/64: Back-rests {or cushions (B60N2/2222 takes precedence)}
- B60N 2/66: Lumbar supports
- B60N 2/70: Upholstery springs {; Upholstery}
- B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR

## Abstract

To improve the seated feeling of an occupant in a seat having partially different hardness, a vehicle seat includes a seat frame, an S spring which is installed on the seat frame and receives a load of an occupant, and a seat back pad which has a plurality of regions respectively formed of different materials and is disposed between a skin material of the seat and the S spring. The S spring is disposed at a position facing a boundary portion which is provided in the seat back pad and is the plurality of regions respectively formed of different materials.

## Claims

### Claim 1

A vehicle seat comprising:
a seat back frame;
a seat back pad that is placed on the seat back frame; and
a pressure receiving member that supports the seat back pad and extends in a seat width direction,
wherein:
the seat back pad includes a first pad portion that is disposed at a position facing a lower end portion of the pressure receiving member, a second pad portion that is disposed at a position facing an upper end portion of the pressure receiving member, and a boundary portion that is a boundary between the first pad portion and the second pad portion;
a hardness of the first pad portion is greater than a hardness of the second pad portion;
the first pad portion is a lumbar support region that is configured to support a lumbar spine of an occupant;
the boundary portion is disposed above the lumbar support region; and
the boundary portion is formed in a wavy shape when the vehicle seat is viewed from a front side.

### Claim 2 (depends on 1)

The vehicle seat according to claim 1, wherein:
the second pad portion is disposed above the boundary portion;
a lower portion of the pressure receiving member and the first pad portion are on a same first horizontal plane;
an upper end portion of the pressure receiving member and the second pad portion are on a same second horizontal plane;
a press felt is adhered to rear surfaces of the first pad portion and the second pad portion; and
the press felt is disposed at a position that overlaps the boundary portion in an up and down direction of the vehicle seat.