Vehicle seat

• US 10,518,664 B2
• Filed: 04/27/2018
• Issued: 12/31/2019
• Est. Priority Date: 05/18/2017
• Status: Active Grant

• Current Assignee: Toyota Boshoku Kabushiki Kaisha
• Original Assignee: Toyota Boshoku Kabushiki Kaisha
• Inventors: Nagatani, Yuki
• Primary Examiner(s): White, Rodney B
• Application Number:
  US15/964,740
• Publication Number:
  US 20180334057A1
• Time in Patent Office: 613 Days
• Field of Search: 2972161, 29721615, 29721516, 29721617, 29721518, 29734415, 29734416, 29734417, 29745218
• CPC Class Codes: B60N 2/045 Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms B60N2/38 takes precedence
• CPC Class Codes: B60N 2/0705 omega-shaped
• CPC Class Codes: B60N 2/0715 C or U-shaped
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/507 Parallelogram-like structure
• CPC Class Codes: B60N 2/919 Positioning and locking mechanisms B60N2/16, B60N2/18, B60N2/22, B60N2/225 take precedence

Abstract

Disclosed is one example of a vehicle seat that can inhibit a large displacement of a cushion frame along a seat-width axis. The vehicle seat includes a cushion frame; a bracket coupled to a vehicle body; a lifter link that couples the cushion frame to the bracket and supports the cushion frame; and a first restrictor included in the bracket. The bracket is configured to couple the cushion frame to the vehicle body. The lifter link is pivotable along a front-rear axis of the seat with an upper end of the lifter link being pivotably coupled to the cushion frame and a lower end of the lifter link being pivotably coupled to the bracket. The first restrictor restricts a displacement of the lifter link along the seat-width axis in response to an abutment of the first restrictor against a first abutting portion included in the lifter link.

Claims

1. A vehicle seat that is mounted onto a vehicle, the vehicle seat comprising:

a cushion frame that forms a framework of a seat cushion,

a bracket that is configured to be coupled to a vehicle body, wherein the bracket comprises a first protrusion that protrudes along a seat-width axis and is configured to couple the cushion frame to the vehicle body,

a lifter link that couples the cushion frame to the bracket and supports the cushion frame, wherein the lifter link is pivotable along a front-rear axis of the seat with an upper end of the lifter link being pivotably coupled to the cushion frame and a lower end of the lifter link being pivotably coupled to the bracket, and

a first restrictor that is included in the bracket, wherein the first restrictor is located in the first protrusion and restricts a displacement of the lifter link along the seat-width axis in response to an abutment of the first restrictor against a first abutting portion that is included in the lifter link.

2. The vehicle seat according to claim 1, wherein an upper end of the bracket includes a second restrictor that is configured to restrict a downward displacement of the lifter link in response to an abutment of the second restrictor against a second abutting portion that is included in an edge of the lifter link.

3. The vehicle seat according to claim 1,

wherein the cushion frame comprises:

a first side frame that extends along the front-rear axis of the seat; and

a second side frame that is located a distance from the first side frame along the seat-width axis and extends along the front-rear axis of the seat,

wherein the upper end of the lifter link is coupled to the first side frame,

wherein the lower end of the lifter link is coupled to the bracket with the lower end of the lifter link being located closer to the second side frame than the bracket is, and

wherein the first restrictor is located closer to the second side frame than the first abutting portion is.

4. The vehicle seat according to claim 3, wherein the first protrusion protrudes toward the second side frame.

5. The vehicle seat according to claim 3, wherein the first abutting portion is located in a second protrusion that oppositely protrudes with respect to the second side frame.

6. The vehicle seat according to claim 3, wherein the first side frame is located closer to the second side frame than the upper end of the lifter link is.

7. The vehicle seat according to claim 1, further comprising:

a fixed rail that is configured to be fixed to the vehicle, and

a movable rail that is slidable with respect to the fixed rail, wherein

the bracket is fixed to the movable rail, and

the first restrictor is located above the fixed rail.

8. A vehicle seat that is mounted onto a vehicle, the vehicle seat comprising:

a cushion frame that forms a framework of a seat cushion,

a bracket that is configured to be coupled to a vehicle body, wherein the bracket is configured to couple the cushion frame to the vehicle body,

a lifter link that couples the cushion frame to the bracket and supports the cushion frame, wherein the lifter link is pivotable along a front-rear axis of the seat with an upper end of the lifter link being pivotably coupled to the cushion frame and a lower end of the lifter link being pivotably coupled to the bracket,

a first restrictor that is included in the bracket, wherein the first restrictor restricts a displacement of the lifter link along a seat-width axis in response to an abutment of the first restrictor against a first abutting portion that is included in the lifter link, and

a second restrictor that is included in an upper end of the bracket and is configured to restrict a downward displacement of the lifter link in response to an abutment of the second restrictor against a second abutting portion that is included in an edge of the lifter link.

9. A vehicle seat that is mounted onto a vehicle, the vehicle seat comprising:

a cushion frame that forms a framework of a seat cushion, the cushion frame comprising;

a first side frame that extends along a front-rear axis of the seat; and

a second side frame that is located a distance from the first side frame along a seat-width axis and extends along the front-rear axis of the seat;

a bracket that is configured to be coupled to a vehicle body, wherein the bracket is configured to couple the cushion frame to the vehicle body;

a lifter link that couples the cushion frame to the bracket, supports the cushion frame, and is pivotable along the front-rear axis of the seat, the lifter link comprising;

an upper end of the lifter link that is pivotably coupled to the first side frame, and

a lower end of the lifter link that is pivotably coupled to the bracket and located closer to the second side frame than the bracket is; and

a first restrictor that is included in the bracket, wherein the first restrictor is located closer to the second side frame than the first abutting portion is and restricts a displacement of the lifter link along the seat-width axis in response to an abutment of the first restrictor against a first abutting portion that is included in the lifter link, wherein the first abutting portion is located in a second protrusion that oppositely protrudes with respect to the second side frame.