Vehicle seat

Patent metadata

Field	Value
Publication number	US-2017096084-A1
Application number	US-201615280147-A
Country	US
Kind code	A1
Filing date	Sep 29, 2016
Priority date	Oct 1, 2015
Publication date	Apr 6, 2017
Grant date	—

Abstract

A vehicle seat includes: a seating portion configured to support a seated occupant in a seating posture, the seating portion including a seat cushion portion and a seat back portion; a shell portion configured to cover a circumference of the seating portion from a rear side; and a moving mechanism that is configured to change a reclining angle, which is an angle of the seat back portion of the seating portion relative to the seat cushion portion, together with a position of the shell portion to be in two or more modes including a normal mode and a comfort mode, wherein the moving mechanism moves the shell portion to have a higher height in a seating height direction of the seated occupant with respect to the seat cushion portion in a comfort mode than in a normal mode.

First claim

What is claimed is:

1 . A vehicle seat comprising:
a seating portion configured to support a seated occupant in a seating posture, the seating portion including a seat cushion portion that serves as a seat portion that supports a bottom of the seated occupant and a seat back portion that serves as a backrest that supports a back of the seated occupant; a shell portion configured to cover a circumference of the seating portion from a rear side; and a moving mechanism that is configured to change a reclining angle, which is an angle of the seat back portion of the seating portion relative to the seat cushion portion, together with a position of the shell portion to be in two or more modes including a normal mode and a comfort mode, wherein the normal mode is a mode in which the reclining angle is set to be relatively small to allow the seated occupant to take a normal seating posture, wherein the comfort mode is a mode in which the relining angle is set to be relatively large to allow the seated occupant to take a comfort posture, and wherein the moving mechanism moves the shell portion to have a higher height in a seating height direction of the seated occupant with respect to the seat cushion portion in the comfort mode than in the normal mode.

2 . The vehicle seat according to claim 1 ,
wherein the moving mechanism includes: a first reclining mechanism that changes a reclining angle of the seat back portion of the seating portion; and a second reclining mechanism that changes a reclining angle of the shell portion with respect to the seat back portion and the seat cushion portion, and wherein a rotational center of the seat back portion in the first reclining mechanism is provided at a position closer to a hip point of a seated occupant than a rotational center of the shell portion in the second reclining mechanism.

3 . The vehicle seat according to claim 2 ,
wherein the rotational center of the shell portion in the second reclining mechanism is provided at a rear position lower than the rotational center of the seat back portion in the first reclining mechanism.

4 . The vehicle seat according to claim 1 ,
wherein the shell portion includes a side portion that covers at least a part of a head side of the seated occupant in a comfort mode.

5 . The vehicle seat according to claim 1 ,
wherein the shell portion has a lower part larger in a lateral width than an upper part thereof with respect to the height of the seated occupant in the seating height direction.

6 . The vehicle seat according to claim 1 ,
wherein the seat back portion of the seating portion has a lower part gradually wider in the lateral width than an upper part thereof with respect to the height of the seated occupant in the seating height direction, wherein the shell portion includes an elastic body that is provided at a portion that faces the seated occupant, the elastic body providing a soft tactile feeling to the seated occupant when the seated occupant contacts with the shell portion, wherein the elastic body includes a notch portion having a shape corresponding to an outer peripheral shape of the seat back portion, wherein the seat back portion is fitted into the notch portion when the seat back portion and the shell portion of the seating portion are located to overlap each other in a longitudinal direction, and wherein an occupant-side surface of the seat back portion and an occupant-side surface of the elastic body are configured to have one continuous surface.

Assignees

• Toyota Boshoku Kk

Inventors

• Akaike Fumitoshi
• Kaneda Koji

Classifications

• B60N2/686

  Panel like structures · CPC title

• B60N2/68

  Seat frames · CPC title

• B60N2/986

  Side-rests (B60N2/2872, B60N2/885 take precedence) · CPC title

• B60N2/643

  shape of the back-rests (B60N2/66 takes precedence) · CPC title

• B60N2/22 Primary

  the back-rest being adjustable {(B60N2/2878 takes precedence)} · CPC title