VEHICLE SEAT CUSHION AND MANUFACTURING METHOD THEREOF

• US 20110156467A1
• Filed: 12/22/2010
• Published: 06/30/2011
• Est. Priority Date: 12/24/2009
• Status: Abandoned Application

• Current Assignee: Toyota Boshoku Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Boshoku Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: NIIMI, Tomohito, MURATA, Yoshiyuki
• Application Number:
  US12/975,837
• Publication Number:
  US 20110156467A1
• Time in Patent Office: Days
• US Class Current: 297/452.48
• CPC Class Codes: B60N 2/7017 characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for

Abstract

A cushion has a seat portion made of polyurethane foam, and a supporting portion made of an elastic fiber laminated body. The seat portion and the supporting portion are directly joined in a state in which the elasticity of the supporting portion is maintained.

Claims

1. A cushion of a vehicle seat, comprising:

a seat portion made of polyurethane foam; and

a supporting portion made of an elastic fiber laminated body,

wherein the seat portion and the supporting portion are directly joined in a state in which the elasticity of the supporting portion is maintained.

2. A manufacturing method of the cushion according to claim 1 using a mold assembly, wherein the mold assembly has a first die and a second die that is able to close together with the first die such that a cavity is formed between the first die and the second die, the manufacturing method comprising:

a first step of arranging the supporting portion in the second die, and pouring liquid polyurethane raw material into the cavity; and

a second step of expanding the liquid polyurethane raw material inside the cavity after closing the first die and the second die together,

wherein in the second step, the liquid polyurethane raw material is away from the supporting portion, and the liquid polyurethane raw material that is expanding contacts the supporting portion, such that the supporting portion and the seat portion become integrated.

3. The manufacturing method according to claim 2, further comprising:

melting and hardening a contact surface of the supporting portion that the expanding liquid polyurethane raw material contacts, before the second step.