Vehicle seat and method of manufacturing headrest
AssigneeTachi-S Co., Ltd.
InventorTsuyoshi Tabata
Life of this patent
Estimating the term…
Abstract
A vehicle seat includes a headrest, a seat back to which the headrest is attached, and a seat cushion connected to the seat back. The headrest includes pillar frames attached to the seat back, a core member that includes a pouring passage penetrating from one end to the other end, a cover that covers the core member and a part of the pillar frames, and a cushion member that is formed in a gap between the outer surface of the core member and the inner surface of the cover and inside the pouring passage. The pouring passage extends in a first direction from the one end of the core member to reach a predetermined position, extends in a second direction from the predetermined position to reach the other end, and includes a bent part at the predetermined position.
Claims15
A vehicle seat, comprising:
- a headrest;
- a seat back to which the headrest is attached;
- and
- a seat cushion that is connected to the seat back,
- wherein the headrest includes:
- pillar frames that are attached to the seat back;
- a core member that includes a pouring passage penetrating from one end of the core member to anther end of the core member;
- a cover that covers the core member and a part of the pillar frames;
- and
- a cushion member that is formed in a gap between an outer surface of the core member and an inner surface of the cover and inside the pouring passage, and
- the pouring passage extends in a first direction from the one end of the core member to reach a predetermined position between the one end and the other end of the core member, extends in a second direction from the predetermined position to reach the other end of the core member, and includes a bent part at the predetermined position.
A vehicle seat, comprising:
- a headrest;
- a seat back to which the headrest is attached;
- and
- a seat cushion that is connected to the seat back,
- wherein the headrest includes:
- pillar frames that are attached to the seat back;
- a core member that includes a pouring passage penetrating from one end of the core member to another end of the core member;
- a cover that covers the core member and a part of the pillar frames;
- and
- a cushion member that is formed in a gap between an outer surface of the core member and an inner surface of the cover and inside the pouring passage, and
- the pouring passage extends in a first direction from the one end of the core member to reach the other end, and includes a rod at a predetermined position between the one end and the other end.
A method of manufacturing a headrest, comprising:
- (a) a step of preparing pillar frames, a core member where a pouring passage including stirring means for stirring a foaming raw material is formed, and a surface skin member that is sewed into a bag shape;
- (b) a step of fixing the core member to the pillar frames;
- (c) a step of inserting the core member and the pillar frames into a bag of the surface skin member;
- (d) a step of setting the surface skin member, the core member, and the pillar frames to a mold;
- and
- (e) a step of pouring the foaming raw material from a pouring nozzle into the surface skin member to form a cushion member,
- wherein the step (e) includes:
- (e1) a step of inserting the pouring nozzle to one end of the pouring passage;
- (e2) a step of pouring the foaming raw material from the pouring nozzle to the pouring passage;
- (e3) a step of stirring the poured foaming raw material by the stirring means;
- and
- (e4) a step of diffusing a part of the poured foaming raw material to another end of the pouring passage and diffusing a part of the poured foaming raw material to the one end of the pouring passage to form a cushion member in a gap between an outer surface of the core member and an inner surface of the surface skin member.
Dependencies are inferred from the claim text.