Vehicle seat

Patent metadata

Field	Value
Publication number	US-10029593-B2
Application number	US-201514969575-A
Country	US
Kind code	B2
Filing date	Dec 15, 2015
Priority date	Dec 19, 2014
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A vehicle seat includes: a cushion that has a main portion that configures part of the seat cushion or the seat back and is placed in the seat width direction middle portion of the cushion and a pair of right and left side support portions that project toward the seat upper side or the seat front side relative to the main portion; and a cover that has side support portion cover portions and a main portion cover portion, with both seat width direction end portions of the main portion cover portion being joined to the side support portion cover portions, and with the seat width direction dimension of the main portion cover portion being longer than the seat width direction dimension of a surface on the seated occupant side of the main portion in a deformed state resulting from an occupant being seated.

First claim

What is claimed is:

1. A vehicle seat, comprising:
a frame member that forms a frame of a seat cushion that supports the buttocks and thighs of a seated occupant or of a seat back that supports the upper body of a seated occupant; and
a cushion that is attached to the frame member and that has:
a main portion that configures part of the seat cushion or configures part of the seat back and that is placed in a seat width direction middle portion of the cushion, and
a pair of right and left side support portions that are placed on respective seat width direction side portions of the main portion, that project toward a seat upper side relative to the main portion in a case in which the main portion configures part of the seat cushion, and that project toward a seat front side relative to the main portion in a case in which the main portion configures part of the seat back; and

a cover that has:
side support portion cover portions that cover the pair of right and left side support portions, and
a main portion cover portion that covers the main portion, with both seat width direction end portions of the main portion cover portion being joined to the side support portion cover portions, and with a seat width direction dimension of the main portion cover portion being longer than a seat width direction dimension of a surface on a seated occupant side of the main portion in a deformed state, the deformed state resulting from an occupant wherein

channel grooves, in which joint portions between the main portion cover portion and the side support portion cover portions are placed, are formed in the cushion in boundary portions between the main portion and the side support portions;
an amount of deformation in a thickness direction of the main portion, that becomes deformed as a result of the occupant being seated, is shorter than a distance from groove bottoms to open ends of the channel grooves;
at least parts of the channel grooves are sloped outward in the seat width direction heading from a groove bottom side to an open end side of the channel grooves;
a hardness of first regions of the cushion on seat width direction outer sides of the channel grooves is higher than a hardness of second regions of the cushion on a seat width direction inner side of the channel grooves; and
a portion of the second regions is positioned above a portion of the first regions in a seat vertical direction where the first regions and the second regions contact each other extending from the groove bottoms of the channel grooves.

2. The vehicle seat according to claim 1 , wherein the groove bottoms of the channel grooves are positioned at a seat width direction inner side of the open ends of the channel grooves as seen in a seat front view or as seen in a seat plan view.

3. The vehicle seat according to claim 1 , wherein:
the frame member is a seat cushion frame that forms the frame of the seat cushion; and
the cushion is a seat cushion pad that has the main portion, whose thickness direction coincides with the seat vertical direction and which extends in the seat width direction, and the pair of right and left side support portions, which project toward the seat upper side relative to the main portion.

4. The vehicle seat according to claim 1 , wherein a contact surface between the first regions and the second regions has an arch shape in profile.

5. A vehicle seat, comprising:
a frame member that forms a frame of a seat cushion that supports the buttocks and thighs of a seated occupant or of a seat back that supports the upper body of a seated occupant;
a cushion that is attached to the frame member and that has:
a main portion that configures part of the seat cushion or configures part of the seat back and that is placed in a seat width direction middle portion of the cushion,
a pair of right and left side support portions that are placed on respective seat width direction side portions of the main portion, and that project toward a seat upper side or toward a seat front side relative to the main portion, and
channel grooves that are formed in boundary portions between the main portion and the side support portions; said channels having open ends at seated occupant side and channel groove bottoms; and whose seated occupant sides are open; and

a cover that has:
side support portion cover portions that cover the pair of right and left side support portions, and
a main portion cover portion that covers the main portion, with both seat width direction end portions of the main portion cover portion being joined to the side support portion cover portions,

wherein joint portions between the side support portion cover portions and the main portion cover portion are placed in the channel grooves at middle portions of the channel grooves in a depth direction,
wherein an amount of deformation in a thickness direction of the main portion, that becomes deformed as a result of an occupant being seated, is shorter than a distance from the groove bottoms to the open ends of the channel grooves,
wherein the channel groove bottoms of the channel grooves are positioned at a seat width direction inner side of the open ends of the channel grooves as seen in a seat front view or as seen in a seat plan view,
wherein the channel grooves include a sloping portion that slopes outward in the seat width direction from the groove bottom to the open end,
a hardness of first regions of the cushion on seat width direction outer sides of the channel grooves is higher than a hardness of second regions of the cushion on a seat width direction inner side of the channel grooves, and
a portion of the second regions is positioned above a portion of the first regions in a seat vertical direction where the first regions and the second regions contact each other extending from the groove bottoms of the channel grooves.

6. The vehicle seat according to claim 5 , wherein the depth of the channel grooves is equal to or greater than 25% of the thickness of a seat width direction middle portion of the main portion.

Assignees

• Toyota Motor Co Ltd

Inventors

• Takahashi Gen
• Hori Hiroki

Classifications

• B60N2205/35

  Seat, bench or back-rests being split laterally in two or more parts · CPC title

• B60N2205/30

  Seat or seat parts characterised by comprising plural parts or pieces · CPC title

• B60N2/62

  Thigh-rests {(B60N2/914 takes precedence)} · CPC title

• B60N2/99

  adjustable · CPC title

• B60N2/5883

  by sewing, stitching or threading · CPC title