Vehicle seat

Patent metadata

Field	Value
Publication number	US-9630527-B2
Application number	US-201514719720-A
Country	US
Kind code	B2
Filing date	May 22, 2015
Priority date	May 26, 2014
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A vehicle seat includes a seat frame, a bushing having a shape of a hollow cylinder and a pipe. The pipe is fitted to the bushing and attached to the seat frame. The pipe includes a body portion having a fitting diameter different from a fitting diameter of the bushing and a fitting portion formed at an end in an axial direction of the body portion and fitted to an inner periphery or an outer periphery of the bushing. The fitting portion is formed in a diameter-reduced or diameter-increased hollow cylindrical shape that is fitted to the inner periphery or the outer periphery of the bushing.

First claim

What is claimed is:

1. A vehicle seat comprising:
a seat frame including a side frame of a seat cushion;
a bushing having a hollow cylinder; and
a pipe that is fitted to the bushing and attached to the side frame, the pipe including:
a body portion that defines a hollow cylinder having an outer diameter greater than an inner diameter of the bushing; and
a fitting portion that is provided at an end in an axial direction of the body portion and that is fitted to an inner periphery of the bushing, the fitting portion defines a diameter-reduced hollow cylinder that is fitted into the hollow cylinder bushing at the inner periphery of the bushing; and

a plurality of lifter links rotatably coupled to the side frame and to a base on a floor, wherein
the bushing is a coupling shaft and at least one of the plurality of lifter links and the side frame are coupled to an outer periphery of the bushing such that the at least one lifter link is rotatable relative to the side frame, and
the fitting portion of the pipe is inserted into the hollow cylinder bushing in the axial direction through a coupling position of the at least one lifter link.

2. The vehicle seat according to claim 1 , wherein
the at least one lifter link is a drive link configured to receive a rotational driving force so as to drive at least one other lifter link of the plurality of lifter links,
the bushing is integrally joined to the drive link and rotatably coupled to the side frame, and
both of end portions of a first fitting area of the fitting portion are welded to the bushing.

3. The vehicle seat according to claim 2 , wherein
the drive link is integrally joined to a driving force transmission member via the bushing with the side frame interposed therebetween, and
the fitting portion of the pipe is inserted into the hollow cylinder bushing in the axial direction to a position passing through the coupling position of the drive link and a coupling position of the driving force transmission member, and
both end portions of a second fitting area of the fitting portion are welded to the bushing.

4. The vehicle seat according to claim 1 , wherein
the pipe tapers from the body portion to the fitting portion.

5. The vehicle seat according to claim 1 , wherein
the fitting portion of the pipe is inserted into the hollow cylinder bushing in the axial direction so as to extend over both the coupling position of the at least one lifter link and a coupling position of the side frame.

Assignees

• Toyota Boshoku Kk
• Shiroki Corp

Inventors

• Matsui Hayato

Classifications

• B60N2002/0236

  Operations & Transport · mapped topic

• B60N2/165

  Gear wheel driven mechanism · CPC title

• B60N2/181

  Rods · CPC title

• B60N2/1615 Primary

  Parallelogram-like structure · CPC title

• B60N2/682

  Joining means · CPC title