Vehicle seat

• US 10,059,240 B2
• Filed: 07/18/2017
• Issued: 08/28/2018
• Est. Priority Date: 08/23/2016
• Status: Active Grant

• Current Assignee: Tachi-S Company Limited
• Original Assignee: Tachi-S Company Limited
• Inventors: Mitsumoto, Toshinari
• Primary Examiner(s): Barfield, Anthony D
• Application Number:
  US15/653,514
• Publication Number:
  US 20180056828A1
• Time in Patent Office: 406 Days
• Field of Search: 2974631
• CPC Class Codes: B60N 2/16 height-adjustable
• CPC Class Codes: B60N 2/20 the back-rest being tiltable, e.g. to permit easy access B60N2/04, B60N2/22 , B60N2/3002 take precedence
• CPC Class Codes: B60N 2/58 Seat coverings
• CPC Class Codes: B60N 2/753 movable to an inoperative position
• CPC Class Codes: B60N 2/919 Positioning and locking mechanisms B60N2/16, B60N2/18, B60N2/22, B60N2/225 take precedence
• CPC Class Codes: B60N 2/933 rotatable

Abstract

A vehicle seat includes: a side cover; a first operation lever placed on a lateral side of the side cover; and a second operation lever placed closer to the side cover than the first operation lever is placed. The side cover includes: a first abut boss; and a second abut boss placed closer to a rotation center of the second operation lever than the first abut boss is placed. The second operation lever includes: a first abut rib; a second abut rib placed closer to a rotation center of the second operation lever than the first abut rib is placed; and a third abut rib placed closer to the rotation center of the second operation lever than the first abut rib is placed.

Claims

1. A vehicle seat, comprising:

a seat cushion which is capable of being lifted and lowered;

a seatback which is tiltable relative to the seat cushion;

a side cover which covers a side of a rear portion of the seat cushion from a front portion of the seat cushion;

a first operation lever which is placed on a lateral side of the side cover; and

a second operation lever which is placed closer to the side cover than the first operation lever is placed,

wherein

the side cover includes;

a first abut boss; and

a second abut boss which is placed closer to a rotation center of the second operation lever than the first abut boss is placed,

the second operation lever includes;

a first abut rib;

a second abut rib which is placed closer to a rotation center of the second operation lever than the first abut rib is placed; and

a third abut rib which is placed closer to the rotation center of the second operation lever than the first abut rib is placed,

the second operation lever overlaps the first operation lever in side view,

the second operation lever has a length in a front-rear direction greater than that of the first operation lever, and

the first abut boss is located at a longer distance from the rotation center of the second operation lever than a distance between a front end of the first operation lever and the rotation center of the second operation lever.

2. The vehicle seat according to claim 1, wherein

when the second operation lever is in an initial position, the first abut rib abuts on the first abut boss, and the second abut rib and the third abut rib do not abut on the second abut boss,

when the second operation lever is in a maximum pulled-up position, the first abut rib does not abut on the first abut boss, and either the second abut rib or the third abut rib abuts on the second abut boss, and

when the second operation lever is in a maximum pulled-down position, the first abut rib does not abut on the first abut boss, and either the second abut rib or the third abut rib abuts on the second abut boss.

3. The vehicle seat according to claim 2, wherein

the second operation lever operates in an operation range in which there is an overlap between a range in which the first abut rib abuts on the first abut boss and a range in which the third abut rib abuts on the second abut boss, and there is an overlap between a range in which the first abut rib abuts on the first abut boss and a range in which the second abut rib abuts on the second abut boss.

4. The vehicle seat according to claim 1, wherein

the first abut boss extends in an up-down direction,

the first abut rib extends in the up-down direction,

the first abut boss has a length in the up-down direction shorter than a length of the first abut rib in the up-down direction, and

the first abut boss has a width greater than a width of the first abut rib.

5. The vehicle seat according to claim 4, wherein

the second abut rib extends in the up-down direction,

the third abut rib extends in the up-down direction,

the second abut rib has an upper end offset from an upper end of the third abut rib in the up-down direction, and

the second abut rib has a lower end offset from a lower end of the third abut rib in the up-down direction.

6. The vehicle seat according to claim 5, wherein

the upper end of the second abut rib is located upward of the upper end of the third abut rib, and

the lower end of the second abut rib is located upward of the lower end of the third abut rib.

7. The vehicle seat according to claim 6, wherein

when the second operation lever is in a maximum pulled-up position, the third abut rib abuts on the second abut boss, and

when the second operation lever is in a maximum pulled-down position, the second abut rib abuts on the second abut boss.

8. The vehicle seat according to claim 7, wherein

the third abut rib is placed closer to the rotation center of the second operation lever than the second abut rib is placed.

9. The vehicle seat according to claim 8, wherein

the side cover further includes a third abut boss placed closer to the rotation center of the second operation lever than the second abut boss is placed,

when the second operation lever is in a maximum pulled-up position, the third abut rib abuts on the third abut boss, and

when the second operation lever is in a maximum pulled-down position, the second abut rib abuts on the second abut boss.

10. The vehicle seat according to claim 9, wherein

the third abut rib is placed closer to the rotation center of the second operation lever than the second abut rib is placed.

11. The vehicle seat according to claim 1, wherein

the first operation lever is a reclining operation lever used to adjust a tilt of the seatback, and

the second operation lever is a lifter operation lever used to adjust a height of the seat cushion.