Vehicle seat frame

Patent metadata

Field	Value
Publication number	US-9744892-B2
Application number	US-201615217256-A
Country	US
Kind code	B2
Filing date	Jul 22, 2016
Priority date	Jul 31, 2015
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

A vehicle seat frame includes a pair of side frames, a pair of cylindrical collar members, a pair of link members, and a pipe member coaxially secured at end portions to the collar members. At least one of the collar members is substantially equal in outer diameter to the pipe member. A contact surface portion having a reduced outer diameter is formed in an end portion of a first member, which is brought into contact with a second member. The first member is one of the pipe member and the collar member that is substantially equal in outer diameter to the pipe member, and the second member is the other one of them. The first member and the second member are secured to each other by welding, with the contact surface portion kept in contact with an inner peripheral portion of the second member.

First claim

What is claimed is:

1. A vehicle seat frame comprising:
a pair of side frames constituting side portions of a seat cushion frame;
a pair of collar members having a cylindrical shape, the collar members being rotatably attached to the respective side frames;
a pair of link members, each of the link members having a first end portion secured to a corresponding one of the collar members, and a second end portion pivotably attached to a vehicle body; and
a pipe member coaxially secured at respective end portions to the collar members, wherein
at least one of the collar members has an outer diameter that is substantially equal to an outer diameter of the pipe member,
a contact surface portion having a reduced outer diameter is formed in an end portion of a first member, the end portion of the first member being brought into contact with a second member,
the first member being one of the pipe member and the collar member that is substantially equal in outer diameter to the pipe member, and the second member being the other one of the pipe member and the collar member that is substantially equal in outer diameter to the pipe member, and

the first member and the second member are secured to each other by welding, with the contact surface portion kept in contact with an inner peripheral portion of the second member.

2. The vehicle seat frame according to claim 1 , wherein the contact surface portion is a sloped surface portion having an outer diameter that is gradually reduced.

3. The vehicle seat frame according to claim 2 , wherein:
the sloped surface portion of the first member is brought into contact with the inner peripheral portion of the second member; and
an end corner portion of the inner peripheral portion of the second member is chamfered.

4. The vehicle seat frame according to claim 3 , wherein:
the end corner portion of the inner peripheral portion of the second member is chamfered at a chamfer angle of about 45 degrees; and
the sloped surface portion is sloped at an angle of about 45 degrees with respect to a central axis of the pipe member, in a section taken along a plane extending along the central axis of the pipe member.

Assignees

• Toyota Boshoku Kk
• Aisin Seiki

Inventors

• Matsui Hayato

Classifications

• B60N2/68 Primary

  Seat frames · CPC title

• B60N2/1803

  with independent front and/or rear adjustment · CPC title

• B60N2/1615

  Parallelogram-like structure · CPC title

• B60N2/1814

  Parallelogram-like structure · CPC title

• B60N2/1864

  Gear wheel driven mechanism · CPC title