Seat sliding device for vehicle

Patent metadata

Field	Value
Publication number	US-9283870-B2
Application number	US-201214131334-A
Country	US
Kind code	B2
Filing date	Jun 27, 2012
Priority date	Jul 12, 2011
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A seat sliding device for a vehicle includes a first rail, which is adapted to be fixed to one of a vehicle floor and a seat and a second rail, which is adapted to be fixed to the other one of the vehicle floor and the seat and coupled to the first rail to make relative movement with respect to the first rail. An urging member is provided with a latch part, which is latched to a second coupling wall part and a latch end part, which is latched to a lock lever. The urging member generates in association with bending deformation an urging force which urges the lock lever in a vertical direction toward a direction in which the lock lever engages with the first rail. The urging member has a coil part wound about a rotating shaft between the latch part and the latch end part.

First claim

The invention claimed is:

1. A seat sliding device for a vehicle comprising:
a first rail, which is adapted to be fixed to one of a vehicle floor and a seat;
a second rail, which is adapted to be fixed to the other one of the vehicle floor and the seat and coupled to the first rail to make a relative movement with respect to the first rail, wherein the second rail has a pair of side wall parts arranged in a widthwise direction in parallel and a coupling wall part, which couples base ends of the side wall parts in which the base ends of the side wall parts are spaced away from the first rail;
a rotating shaft, which has an axis extending in the widthwise direction and which bridges the side wall parts;
a lock lever, which has a pair of vertical wall parts that are arranged in parallel between the side wall parts in the widthwise direction and through which the rotating shaft penetrates, wherein the lock lever rotationally moves about the axis in one direction to engage with the first rail, thereby restricting relative movement between the first rail and the second rail and rotationally moves about the axis in the other direction to release the engagement with the first rail, thereby releasing restrictions on the relative movement; and
an urging member, which has a latch part latched to the coupling wall part and a latch end part latched to the lock lever, wherein the urging member generates in association with bending deformation an urging force that urges the lock lever in a vertical direction in which the lock lever engages with the first rail, wherein
the urging member has a coil part, which is wound about the rotating shaft between the latch part and the latch end part,
an operating member is connected to the lock lever to transmit an operating force for releasing restrictions on the relative movement to the lock lever, and
the urging member is integrally provided with an urging part which is extended from the latch part and latched to the operating member, thereby elastically retaining a state that the operating member is connected with respect to the lock lever.

2. The seat sliding device for a vehicle according to claim 1 , wherein
the latch part of the urging member is inserted into a supporting hole formed at the coupling wall part and latched to the coupling wall part in a state of being in contact with one end surface of the supporting hole of the second rail in the longitudinal direction, and
the urging part is not in contact with any given end surface of the supporting hole of the second rail in the longitudinal direction.

3. The seat sliding device for a vehicle according to claim 1 , wherein
the operating member is inserted between the vertical wall parts, and
the operating member faces the rotating shaft on an extension line in a direction in which the operating member is inserted between the vertical wall parts.

4. The seat sliding device for a vehicle according to claim 1 , wherein
the urging member is a wire spring composed of a single linear element.

5. A seat sliding device for a vehicle which is installed on a vehicle having a floor and a seat, comprising:
a first rail, which is adapted to be fixed to one of the floor and the seat; and
a second rail, which is adapted to be fixed to the other one of the floor and the seat and coupled to the first rail to make relative movement with respect to the first rail, wherein
the first rail is provided with a pair of first side wall parts arranged in a widthwise direction in parallel, two first folded wall parts, which individually extend inward in the widthwise direction facing each other and extend from distal ends of the first side wall parts and folded toward base ends of the first side wall parts, and a restriction part further extending from a distal end of each of the first folded parts at a predetermined position of the first rail in a longitudinal direction, and
the second rail is provided with a pair of second side wall parts arranged in parallel between the first side wall parts in the widthwise direction, two second folded wall parts extending individually outward in the widthwise direction mutually spaced away from distal ends of the second side wall parts and folded to be enclosed with the first side wall parts and the first folded wall parts, and a side wall part attachment hole and a folded wall part attachment hole, which are formed to respectively face in the widthwise direction where the second side wall parts and the second folded wall parts are adjacent, wherein the side wall part attachment hole and a folded wall part attachment hole are located at a predetermined position of the second rail in the longitudinal direction, and
the seat sliding device for a vehicle is provided with a latch member, which is inserted into the side wall part attachment hole and the folded wall part attachment hole to bridge the second side wall parts and the second folded wall parts in the widthwise direction, that enables the relative movement between the first and the second rail within a predetermined range.

6. The seat sliding device for a vehicle according to claim 5 , wherein
an inner wall surface of the side wall part attachment hole or that of the folded wall part attachment hole has an inner wall surface part facing in one direction, and
the latch member is a blade spring folded, wherein the latch member has opposing end parts which are pressure-contacted with the inner wall surface part.

7. The seat sliding device for a vehicle according to claim 5 , wherein
the latch member is composed of a plate member and able to be in contact with the restriction part on an end surface in a direction orthogonal to a thickness direction thereof.

8. The seat sliding device for a vehicle according to claim 5 , wherein
the latch member is provided with a retaining part which is cut and extended to engage with an edge part of the side wall part attachment hole or that of the folded wall part attachment hole in a direction reverse to an insertion direction into the side wall part attachment hole and the folded wall part attachment hole.

9. The seat sliding device for a vehicle according to claim 2 , wherein
the operating member is inserted between the vertical wall parts, and
the operating member faces the rotating shaft on an extension line in a direction in which the operating member is inserted between the vertical wall parts.

10. The seat sliding device for a vehicle according to claim 6 , wherein
the latch member is composed of a plate member and able to be in contact with the restriction part on an end surface in a direction orthogonal to a thickness direction thereof.

11. The seat sliding device for a vehicle according to claim 6 , wherein
the latch member is provided with a retaining part which is cut and extended to engage with an edge part of the side wall part attachment hole or that of the folded wall part attachment hole in a direction reverse to an insertion direction into the side wall part attachment hole and the folded wall part attachment hole.

Assignees

• Yamada Yukifumi
• Goto Naoki
• Aisin Seiki

Inventors

• Yamada Yukifumi
• Goto Naoki

Classifications

• B60N2/0875

  in a vertical direction · CPC title

• B60N2/0818

  inside the rail · CPC title

• B60N2/0727

  Stop members for limiting sliding movement · CPC title

• B60N2/0837 Primary

  pivoting · CPC title

• B60N2/0705 Primary

  omega-shaped · CPC title