Vehicle seat, and vehicle-seat production method

• US 10,377,277 B2
• Filed: 11/17/2015
• Issued: 08/13/2019
• Est. Priority Date: 12/25/2014
• Status: Active Grant

• Current Assignee: Tachi-S Company Limited
• Original Assignee: Tachi-S Company Limited
• Inventors: Ishii, Atsushi, Mizuno, Shinichi
• Primary Examiner(s): Chen, Jose V
• Application Number:
  US15/539,584
• Publication Number:
  US 20170361745A1
• Time in Patent Office: 1,365 Days
• Field of Search: 2972281, 29721911
• CPC Class Codes: B29C 70/00 Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
• CPC Class Codes: B60N 2/58 Seat coverings
• CPC Class Codes: B60N 2/585 by buckle passages
• CPC Class Codes: B60N 2/5875 by adhesion, e.g. gluing
• CPC Class Codes: B60N 2/5891 characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
• CPC Class Codes: B60N 2/7017 characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
• CPC Class Codes: B68G 7/00 Making upholstery manufacturing upholstered panels B68G13/00 ; from plastics B29D99/0092; sewing-machines D05B

Abstract

The present invention provides a vehicle seat with little fine creases on a concave portion of a seat surface even the use of natural leather such as a cowhide as a skin material for the vehicle seat. A vehicle seat includes a seat cushion making a seated portion of the seat; a seat back disposed at a back side of the seat cushion and making a backrest portion of the seat; and a cover formed of a cloth including a skin material, an adhesive material, and a cushion material at a concave portion on at least one surface among the seat cushion and the seat back. The cover is formed into a concave shape by heat presswork with a mold having a curved surface.

Claims

1. A vehicle seat comprising:

a seat cushion making a seated portion of the seat;

a seat back disposed at a back side of the seat cushion, the seat back making a backrest portion of the seat; and

a cover formed of a cloth comprising four layers including a skin material, an adhesive material, a wadding forming a cushion material, and an interlining forming a shape-holding material at a concave portion on at least one surface among the seat cushion and the seat back, wherein

the cover is formed into a concave shape by heat presswork with a mold having a curved surface, and

the wadding comprises a high-density urethane having a density of 20 g/dm³ or more and 50 g/dm³ or less.

2. The vehicle seat according to claim 1,

wherein the skin material is a real leather with a natural leather as a material.

3. The vehicle seat according to claim 2,

wherein the natural leather is a cowhide.

4. The vehicle seat according to

claim 1, wherein the adhesive material is a hot-melt-based adhesive material heated and melted for bonding.

5. A vehicle-seat production method comprising:

(a) a step of at least stacking three layers including a skin material, an adhesive material, and a cushion material to produce a lamination cloth; and

(b) a step of performing presswork with a mold having a curved surface on a press surface while heating the lamination cloth to form a concave portion, wherein the lamination cloth is heated from the cushion material side by supplying vapor at around 100°

C. through a plurality of through-holes provided in a lower die of the mold.

6. The vehicle-seat production method according to claim 5,

wherein the skin material is a real leather with a natural leather as a material.

7. The vehicle-seat production method according to claim 6,

wherein the natural leather is a cowhide.

8. The vehicle-seat production method according to claim 5, wherein

the adhesive material is a hot-melt-based adhesive material heated and melted for bonding.

9. A vehicle-seat production method comprising:

(a) a step of at least stacking four layers including a skin material, a cushion material, an adhesive material, and an interlining to produce a lamination cloth; and

(b) a step of performing presswork with a mold having a curved surface on a press surface while heating the lamination cloth to form a concave portion, wherein the lamination cloth is heated from the cushion material side by supplying vapor at around 100°

C. through a plurality of through-holes provided in a lower die of the mold.

10. The vehicle-seat production method according to claim 9,

wherein the skin material is a real leather with a natural leather as a material.

11. The vehicle-seat production method according to claim 9, wherein

the adhesive material is a hot-melt-based adhesive material heated and melted for bonding.

12. The vehicle-seat production method according to claim 10,

wherein the natural leather is a cowhide.