IP Library › Granted Patent US 12672725
Granted Patent B2
US 12672725 · App. 18/937,687 · Granted Jul 7, 2026

Seat back

Inventors: Naoya Hirukawa (Aichi-ken, JP); Kosuke Kito (Aichi-ken, JP); Eito Yoshikawa (Aichi-ken, JP)
Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
A47C31/023B60N2/5825
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Quick Facts
Patent No.
US 12672725
App. No.
18/937,687
Filed
Nov 5, 2024
Granted
Jul 7, 2026
Kind
B2
Examiner
KIM, SHIN H
Art Unit
3636
USPC
297/452.59
Abstract

A seat back includes a seat pad, and a seat frame supporting the seat pad from a pad back side. The seat frame includes a wire frame supporting a pad lower portion of the seat pad from the pad back side. The seat pad includes a pad bending back portion that extends from the pad lower portion toward a seat rear upper while covering the wire frame from a seat lower side. The wire frame includes a first wire that extends in a seat width direction while supporting the pad lower portion from a seat rear side, and a second wire that extends in the seat width direction while supporting the pad bending back portion from a seat front side that is the pad back side at a position separated from the first wire to the seat rear side.

Claims (17)

1 . A seat back, comprising:

a seat pad; and

a seat frame configured to support the seat pad from a pad back side, wherein

the seat frame includes a wire frame configured to support a pad lower portion of the seat pad from the pad back side,

the seat pad includes a pad bending back portion that extends from the pad lower portion toward a seat rear upper side in a manner of covering the wire frame from a seat lower side,

the wire frame includes a first wire that extends in a seat width direction in a manner of supporting the pad lower portion from a seat rear side, and a second wire that extends in the seat width direction in a manner of supporting the pad bending back portion from a seat front side that is the pad back side at a position separated from the first wire to the seat rear side, and

the seat pad further includes, on a pad back surface of the pad bending back portion, a first contact portion configured to come into contact with the first wire from the seat rear side.

2 . The seat back according to claim 1 , wherein

the pad bending back portion is configured to be wound in a manner of coming into contact with the first wire from the seat lower side, and further includes a second contact portion configured to come into contact with the second wire from the seat lower side.

3 . The seat back according to claim 2 , wherein

the pad bending back portion includes a streak-like pad groove portion that is recessed from the pad back side between the first contact portion and the second contact portion in a manner of extending in the seat width direction.

4 . The seat back according to claim 1 , wherein

the first contact portion is a protruding portion that protrudes to a seat upper side beyond an external common tangent of the first wire and the second wire at the seat lower side.

5 . The seat back according to claim 2 , wherein

the first contact portion is a protruding portion that protrudes to a seat upper side beyond an external common tangent of the first wire and the second wire at the seat lower side.

6 . The seat back according to claim 3 , wherein

the first contact portion is a protruding portion that protrudes to a seat upper side beyond an external common tangent of the first wire and the second wire at the seat lower side.