Conveyance seat

Patent metadata

Field	Value
Publication number	US-12179641-B2
Application number	US-202318466072-A
Country	US
Kind code	B2
Filing date	Sep 13, 2023
Priority date	Jul 17, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

A vehicle seat includes a seat cushion provided with a seat cushion frame, a front link configured to adjust a height of the seat cushion with respect to a base that is a slide rail or a vehicle body floor, and a front load detection sensor attached to an upper rail and configured to detect a load applied to the vehicle seat. The seat cushion frame includes a pair of side frames separated from each other in a seat width direction, the front link includes a first rotation shaft configured to be rotatable with respect to the seat cushion frame and a second rotation shaft configured to be rotatable with respect to the base, and the front load detection sensor is arranged at a position different from the second rotation shaft in a front to back direction of the seat.

First claim

What is claimed is:

1. A conveyance seat, comprising:
a seat cushion provided with a seat cushion frame;
a rear load detection sensor attached to a base that is a slide rail or a vehicle body floor and configured to detect a load applied to the conveyance seat;
a front load detection sensor arranged in front of the rear load detection sensor; and
a link member configured to adjust a height of the seat cushion with respect to the base,
wherein
the link member includes a first rotation shaft configured to be rotatable with respect to the seat cushion frame and a second rotation shaft configured to be rotatable with respect to the base, and
an upper end of the front load detection sensor is located above the second rotation shaft.

2. The conveyance seat according to claim 1 ,
wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
when the seat cushion is located at the lowest position, the rear load detection sensor is arranged to face the side frame recessed portion in an up to down direction.

3. The conveyance seat according to claim 1 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame,
the rear load detection sensor is attached via a sensor shaft,
an upper end of the sensor shaft is located at an uppermost part of the rear load detection sensor, and
the upper end of the sensor shaft is arranged to face the side frame recessed portion in an up to down direction.

4. The conveyance seat according to claim 1 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a front recessed portion recessed upward from the lower end of the side frame, and
the front load detection sensor is arranged to face the front recessed portion in an up to down direction.

5. The conveyance seat according to claim 1 ,
wherein
the front load detection sensor is attached to the base via a front sensor shaft.

6. The conveyance seat according to claim 1 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat and a rear side connecting member connecting rear end portions of the pair of side frames,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
an upper end of the side frame recessed portion is located at a same height as the rear side connecting member.

7. The conveyance seat according to claim 1 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
the rear load detection sensor is arranged to face the side frame recessed portion in an up to down direction of the conveyance seat.

8. The conveyance seat according to claim 1 , wherein
the link member is a first link member,
the conveyance seat further comprises a second link member that is rotatably attached to the seat cushion and the base,
a central portion of the second link member includes a circular arc-shaped portion curved toward the seat cushion frame, and
the rear load detection sensor is arranged to face the circular arc-shaped portion in an up to down direction of the conveyance seat.

9. The conveyance seat according to claim 1 , further comprising:
a link support member that is attached to the base and supports the link member and the rear load detection sensor, wherein
each end portion of the link support member in a width direction of the conveyance seat extends outward from the link support member.

10. A method for manufacturing a conveyance seat, comprising:
preparing a seat cushion frame of a seat cushion of the conveyance seat; and
attaching a rear load detection sensor configured to detect a load applied to the conveyance seat to a base that is a slide rail or a vehicle body floor of the conveyance seat; and
attaching a front load detection sensor arranged in front of the rear load detection sensor, and a link member configured to adjust a height of the seat cushion with respect to the base, wherein
the link member includes a first rotation shaft configured to be rotatable with respect to the seat cushion frame and a second rotation shaft configured to be rotatable with respect to the base, and
an upper end of the front load detection sensor is located above the second rotation shaft.

11. The method according to claim 10 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
when the seat cushion is located at the lowest position, the rear load detection sensor is arranged to face the side frame recessed portion in an up to down direction.

12. The method according to claim 10 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame,
the rear load detection sensor is attached via a sensor shaft,
an upper end of the sensor shaft is located at an uppermost part of the rear load detection sensor, and
the upper end of the sensor shaft is arranged to face the side frame recessed portion in an up to down direction.

13. The method according to claim 10 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a front recessed portion recessed upward from the lower end of the side frame, and
the front load detection sensor is arranged to face the front recessed portion in an up to down direction.

14. The method according to claim 10 , wherein
the front load detection sensor is attached to the base via a front sensor shaft.

15. The method according to claim 10 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat and a rear side connecting member connecting rear end portions of the pair of side frames,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
an upper end of the side frame recessed portion is located at a same height as the rear side connecting member.

16. The method according to claim 7 , wherein
the seat cushion frame includes a pair of side frames separated from each other in a width direction of the conveyance seat,
the side frame comprises a side frame recessed portion recessed upward from a lower end of the side frame, and
the rear load detection sensor is arranged to face the side frame recessed portion in an up to down direction of the conveyance seat.

17. The method according to claim 10 , wherein
the link member is a first link member,
the conveyance seat comprises a second link member that is rotatably attached to the seat cushion and the base,
a central portion of the second link member includes a circular arc-shaped port

Assignees

• Ts Tech Co Ltd

Inventors

• Aoki Yuto
• Masuda Tadanori
• Okuma Kei
• Nonaka Hidetsune

Classifications

• B60N2/0031

  mounted on the frame · CPC title

• B60N2210/42

  Strain gauges · CPC title

• B60N2/0025

  by using weight measurement · CPC title

• B60N2/68

  Seat frames · CPC title

• B60N2/1615 Primary

  Parallelogram-like structure · CPC title