US 9,456,702 B2Granted

Seat with ventilative property

AssigneeTachi-S Co., Ltd.

InventorsKei Miyata, Junpei Yoshikawa

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Abstract

In a seat with ventilation property, at least one three-dimensional network cushion element is provided in a foam padding(s) of the seat at at least one point on which at least one body portion of a seat occupant is to be substantially contacted. The three-dimensional network cushion element is formed by a plurality of fibers, each being composed of a core portion and a sheath portion covering the core portion, such that all the fibers are bonded with one another at the respective sheath portions thereof. Preferably, each of the fibers may be an helical fiber of eccentric core type wherein the core portion is eccentrically positioned in the sheath portion. Further, the three-dimensional network cushion element(s) may be arranged in the foam padding so as to prevent intensive exertion of a load from the seat occupant's body portion(s) upon the three-dimensional network cushion element(s).

Claims17

Dependent claims

A seat cushion with a ventilation function for a seat occupant, said seat cushion comprising:

a foam padding provided in said seat cushion, said foam padding having:
an upper surface facing an upper side of said seat cushion on which said seat occupant sits;
and
a bottom surface facing a bottom side of said seat cushion;
and
a three-dimensional network cushion element having an air permeable property, said three-dimensional network cushion element comprising a plurality of fibers, each fiber being of a sheathed core construction and including:
a core portion;
and
a sheath portion covering outer surfaces of said core portion,
wherein said three-dimensional network cushion element is disposed within said foam padding at a point on which a body portion of said seat occupant is to be contacted at said seat cushion,
wherein each fiber of said plurality of fibers is an eccentric-core-type fiber in which said core portion is disposed eccentrically within said sheath portion so as to be apart from a central axis of the sheath portion,
wherein said sheath portion of each fiber of said eccentric-core-type fibers comprises a thick region and a thin region defined by a position of the core portion thereof, and
wherein said three-dimensional network cushion element is formed by a plurality of said eccentric-core-type fibers which are partly contacted and fused with one another, such that a first outer surface of the sheath portion of one fiber of said eccentric-core-type fibers is partly contacted and fused, only at the thick region of the sheath portion, with a second outer surface of the sheath portion of at least one fiber of remaining eccentric-core-type fibers, said second outer surfaces being only at the thick region of said at least one fiber of the remaining eccentric-core-type fibers.

10 more elements

A seat back with a ventilation function for a seat occupant, said seat back comprising:

a foam padding provided in said seat back, said foam padding having:
a front surface facing a forward side of said seat back on which an upper body portion of said seat occupant contacts;
and
a rear surface facing to a rearward side of said seat back;
and
a three-dimensional network cushion element of an air permeable property, said three-dimensional network cushion element comprising a plurality of fibers, each fiber being of a sheathed core construction and including:
a core portion;
and
a sheath portion covering outer surfaces of said core portion,
wherein said three-dimensional network cushion element is disposed within said foam padding at a point on which a predetermined part of said upper body portion of said seat occupant is to be contacted at said seat back,
wherein each fiber of said plurality of fibers is an eccentric-core-type fiber in which said core portion is disposed eccentrically within said sheath portion so as to be apart from a central axis of the sheath portion,
wherein said sheath portion of each fiber of said eccentric-core-type fibers comprises a thick region and a thin region defined by a position of the core portion thereof, and
wherein said three-dimensional network cushion element is formed by the plurality of said eccentric-core-type fibers which are partly contacted and fused with one another, such that a first outer surface of the sheath portion of one fiber of said eccentric-core-type fibers is partly contacted and fused, only at the thick region of the sheath portion, with a second outer surface of the sheath portion of at least one fiber of remaining eccentric-core-type fibers, said second outer surfaces being only at the thick region of said at least one fiber of the remaining eccentric-core-type fibers.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/528,471Filed 30 Oct 2014
Priority: JP 2013-2517425 Dec 2013
Published: US 2015/0158405 A111 Jun 2015
Granted: 4 Oct 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A47C 27/125
With fibrous inlays, e.g. made of wool, of cotton: with projections, depressions or cavities
A47C 7/746
For ventilating or cooling: without active means, e.g. with openings or heat conductors
A47C 27/14
Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas: with foamed material inlays
B60N 2/5642
By air: with circulation of air through a layer inside the seat