VEHICULAR SEAT

• US 20160144748A1
• Filed: 05/28/2014
• Published: 05/26/2016
• Est. Priority Date: 05/29/2013
• Status: Active Grant

• Current Assignee: TS Tech Company Limited
• Original Assignee: TS Tech Company Limited
• Inventors: Akutsu, Takeshi
• Granted Patent: US 9,789,789 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/06 slidable B60N2/12 , B60N2/2209 take precedence
• CPC Class Codes: B60N 2/12 slidable and tiltable
• CPC Class Codes: B60N 2/3013 the back-rest being hinged on the vehicle frame
• CPC Class Codes: B60N 2/3047 the cushion being hinged at the back-rest
• CPC Class Codes: B60N 2/3065 in a longitudinal-vertical plane
• CPC Class Codes: B60N 2/43 Safety locks for back-rests B60N2/433

Abstract

A vehicular seat capable of housing a seat back and a seat cushion connected to the seat back in a housing floor provided in a position lower than a vehicle body floor is described. The vehicular seat includes a support base connected to the vehicle body floor and to a lower end side of the seat back, a support leg having an upper end side mounted to the seat cushion and a lower end side connectable to the support base, and a leg holding member mounted to the support base and that detachably holds the lower end side of the support leg. The seat back is connected to the support base via right and left connecting brackets disposed on sides of the seat back and having first end sides mounted to corresponding lower end sides of the seat back and second end sides pivotally connected to the support base.

Claims

1. A vehicular seat capable of housing a seat back and a seat cushion connected to the seat back in a housing floor provided in a position lower than a vehicle body floor, the vehicular seat comprising:

a support base connected to the vehicle body floor and to which a lower end side of the seat back is connected;

a support leg having i) an upper end side mounted to the seat cushion and ii a lower end side connectable to the support base; and

a leg holding member that i) is mounted to the support base, and ii) detachably holds the lower end side of the support leg, wherein the seat back is connected to the support base via right and left connecting brackets respectively disposed on right and left sides of the seat back, each of the right and left connecting brackets having a first end side mounted to a corresponding lower end side of the seat back and a second end side pivotally connected to the support base.

2. The vehicular seat according to claim 1, wherein

the support base comprises right and left side base portions to which the right and left connecting brackets are respectively mounted, a first base connection portion that connects the right and left side base portions, and a second base connection portion that connects the right and left side base portions at a position behind the first base connection portion, and

the leg holding member is disposed between the first base connection portion and the second base connection portion in a front to back direction of the vehicular seat.

3. The vehicular seat according to claim 2, wherein the first base connection portion and the second base connection portion extend in a seat width direction and are disposed substantially parallel to each other.

4. The vehicular seat according to claim 2, wherein the support base comprises a holding member support portion which extends in the front to back direction of the vehicular seat to connect the first base connection portion and the second base connection portion and to which the leg holding member is mounted.

5. The vehicular seat according to claim 2, wherein

the support base comprises right and left reinforcing base portions respectively mounted on upper sides of the right and left side base portions, and

the right and left side base portions and the right and left reinforcing base portions form respective closed section structures.

6. The vehicular seat according to claim 5, wherein

the support base comprises a plurality of base mounting portions that mount the right and left side base portions and the right and left reinforcing base portions, and

the right and left reinforcing base portions comprise respective right and left convex portions that project in an up and down direction of the vehicular seat and are disposed in portions of the right and left reinforcing base portions located between the plurality of base mounting portions.

7. The vehicular seat according to claim 5, wherein

the right and left reinforcing base portions sandwich the first base connection portion and the second base connection portion with the right and left side base portions,

the right and left reinforcing base portions comprise respective protrusions that project in the up and down direction along an outer surface of the second base connection portion and are disposed in a portion of the right and left reinforcing base portions in contact with the second base connection portion, and

the right and left protrusions extends to an outer end portion of a seat width direction.

8. The vehicular seat according to claim 5, wherein

the right and left side base portions are connected to a lower portion of the first base connection portion, and

the right and left reinforcing base portions are connected to an upper portion of the first base connection portion.

9. The vehicular seat according to claim 7, wherein the right and left protrusions of the right and left reinforcing base portions extends to a position that does not overlap with the leg holding member in the seat width direction.

10. The vehicular seat according to claim 5, wherein

a back pivot axis that serves as a pivot axis of the seat back is pivotally supported on the support base in a seat width direction,

the back pivot axis is connected to the lower end side of the seat back by the right and left connecting brackets and pivotally supported on the right and left reinforcing base portions in the seat width direction,

a side base portion of the right and left side base portions is disposed outside in the seat width direction of a reinforcing base portion of the right and left side base portions, and

the side base portion has a notch in a portion of the side base portion that faces the back pivot axis.

11. The vehicular seat according to claim 1, comprising:

right and left lower rails that are fixed to the vehicle body floor and extend in a front to back direction of the vehicular seat; and

right and left upper rails slidably supported along the lower rails, wherein the support base is disposed between the right and left upper rails and a back pivot axis that serves as a pivot axis of the seat back is mounted thereto.

12. The vehicular seat according to claim 11, wherein the leg holding member is disposed behind in the front to back direction of the vehicular seat as compared to front end portions of the right and left upper rails.

13. The vehicular seat according to claim 1, further comprising a locking device mounted within the vehicular seat and configured to lock the support leg in a state of being held by the leg holding member.

14. The vehicular seat according to claim 13, wherein the locking device is mounted to the support base and is disposed between a front end and a rear end of the support base.

15. The vehicular seat according to claim 13, wherein

the support base comprises right and left side base portions which are disposed on sides of the seat back and to which lower end sides of the seat back are connected, a first base connection portion that connects the right and left side base portions, and a second base connection portion that connects the right and left side base portions at a position behind the first base connection portion, and

the locking device is disposed between the first base connection portion and the second base connection portion.