Vehicle seat cushion core

Patent metadata

Field	Value
Publication number	US-10875436-B2
Application number	US-201816489039-A
Country	US
Kind code	B2
Filing date	Feb 26, 2018
Priority date	Feb 28, 2017
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Provided is a core material of a seat cushion for a vehicle, including: a thermoplastic resin expanded beads molded article having a substantially rectangular shape in top view, that has thick portions on a front side and both sides of a circumferential portion thereof, and that has an occupant seating portion on an upper surface in an inner region thereof; and an annular frame member that is insert-molded at the circumferential portion of the thermoplastic resin expanded beads molded article. In the thermoplastic resin expanded beads molded article, formed are first slits having: slit pieces that extend along a front frame member at a position in front of the occupant sitting part and inside from the front frame part; and slit pieces that extend along a side frame member at a position outside from the occupant sitting part and inside from a side frame part.

First claim

The invention claimed is:

1. A core material of a seat cushion for a vehicle comprising:
a thermoplastic resin expanded beads molded article having a substantially rectangular shape in a top view; and
an annular frame member buried in the circumferential portion of the thermoplastic resin expanded beads molded article by insert molding,
the expanded beads molded article comprising:
thick portions on a front side and on both sides of the expanded beads molded article; and an occupant seating portion on an upper surface in an inner region with respect to the circumferential portion;
the frame member comprising:
a front frame portion;
a rear frame portion; and
two side frame portions connecting the front frame portion and the rear frame portion to each other;
wherein, in the expanded beads molded article,
first slits are formed, the first slits formed within the expanded heads molded article, each having a first slit piece extending in a direction along the front frame portion of the frame member at a position in front of the occupant seating portion and behind the front frame portion and a second slit piece extending in a direction along the side frame portion of the frame member at a position between outside of the occupant seating portion and inside of the side frame portion; and
at least one second slit intersecting the frame member is formed at a position in the thick portions where the frame member is buried.

2. The core material of a seat cushion for a vehicle according to claim 1 , wherein the first slit is recessed in a thickness direction from a lower surface of the expanded beads molded article.

3. The core material of a seat cushion for a vehicle according to claim 1 , wherein the second slit is recessed in a thickness direction from at least one of an upper surface and a lower surface of the expanded beads molded article.

4. The core material of a seat cushion for a vehicle according to claim 1 , wherein the second slit intersects the first slit.

5. The core material of a seat cushion for a vehicle according to claim 1 , wherein the first slit piece is formed in a region of the expanded heads molded article 0 mm to 70 mm behind the front frame portion.

6. The core material of a seat cushion for a vehicle according to claim 1 , wherein the second slit piece is formed in a region of the expanded heads molded article 0 mm to 70 mm inside of the side frame portion.

Assignees

• Jsp Corp

Inventors

• Takayama Atsuo
• Matsumoto Takamitsu

Classifications

• B60N2/90 Primary

  Details or parts not otherwise provided for · CPC title

• A47C27/142 Primary

  with projections, depressions or cavities · CPC title

• A47C7/20

  with reinforcement {in the foam layer} · CPC title

• B60N2/015 Primary

  Attaching seats directly to vehicle chassis · CPC title

• B60N2/4263

  with anti-submarining systems · CPC title