VEHICLE SEAT

• US 20150336477A1
• Filed: 05/22/2015
• Published: 11/26/2015
• Est. Priority Date: 05/26/2014
• Status: Active Grant

• Current Assignee: Shiroki Corporation (Aisin Corp.), Toyota Boshoku Kabushiki Kaisha
• Original Assignee: Shiroki Corporation (Aisin Corp.), Toyota Boshoku Kabushiki Kaisha
• Inventors: MATSUI, Hayato
• Granted Patent: US 9,630,527 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60N 2/02253 characterised by the transmission between the electric motor and the seat or seat parts
• CPC Class Codes: B60N 2/06 slidable B60N2/12 , B60N2/2209 take precedence
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/1635 characterised by the drive mechanism
• CPC Class Codes: B60N 2/165 Gear wheel driven mechanism
• CPC Class Codes: B60N 2/181 Rods
• CPC Class Codes: B60N 2/1814 Parallelogram-like structure
• CPC Class Codes: B60N 2/1864 Gear wheel driven mechanism
• CPC Class Codes: B60N 2/68 Seat frames
• CPC Class Codes: B60N 2/682 Joining means
• CPC Class Codes: B60N 2/72 Attachment or adjustment thereof

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.

Claims

1. A vehicle seat comprising:

a seat frame;

a bushing having a shape of a hollow cylinder; and

a pipe, wherein;

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; and

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.

2. The vehicle seat according to claim 1, wherein:

the body portion of the pipe is formed in a shape having a fitting diameter greater than the fitting diameter of the bushing; and

the fitting portion of the pipe has the diameter-reduced hollow cylindrical shape that is fitted to the bushing.

3. The vehicle seat according to claim 2, wherein:

the fitting portion of the pipe is fitted into the hollow cylinder of the bushing; and

the body portion of the pipe is formed in a hollow cylindrical shape having an outer diameter greater than an inner diameter of the bushing.

4. The vehicle seat according to claim 3, wherein:

a plurality of lifter links for a seat lifter are rotatably coupled to a side frame of a seat cushion and to a base on a floor;

the lifter links include a drive link configured to receive transmission of a rotational driving force so as to drive the other lifter link;

the bushing is configured as a coupling shaft coupling the drive link to the side frame so as to be rotatable relative to the side frame;

the bushing is integrally joined to the drive link and rotatably coupled to the side frame; and

the fitting portion of the pipe is inserted in the axial direction to a coupling position of the drive link in the hollow cylinder of the bushing and both end portions of a fitting area of the fitting portion are welded to the bushing.

5. The vehicle seat according to claim 4, 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 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 in the hollow cylinder of the bushing and both end portions of a fitting area of the fitting portion are welded to the bushing.