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US 10,293,727 B2Granted
Headrest
AssigneeToyota Boshoku Kabushiki Kaisha
InventorsKenji Tatewaki, Tatsuyuki Morishita, Masatoshi Mori, Hiroki Toyoshima
Life of this patent
Estimating the term…
Abstract
A headrest in one aspect of the present disclosure comprises a first frame member, a second frame member, a displacement mechanism configured to displace the second frame member with respect to the first frame member, a first guide shaft, and a second guide shaft arranged at a position shifted in a substantially vertical direction and in a substantially horizontal direction with respect to the first guide shaft.
Claims10
A headrest comprising:
- a headrest main body mounted to an upper end of a seatback to support a head of a seated person on a seat from a rear side;
- a headrest movable portion arranged forward of the headrest main body and relatively displaceable in a front-rear direction with respect to the headrest main body;
- a first frame member configuring the headrest main body;
- a second frame member configuring the headrest movable portion and being displaceable with respect to the first frame member;
- a displacement mechanism configured to displace the second frame member with respect to the first frame member;
- a first guide shaft fixed to one of the first frame member and the second frame member, and extending in a direction substantially parallel to a displacement direction of the second frame member, the first guide shaft being configured to guide another one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction;
- and
- a second guide shaft fixed to one of the first frame member and the second frame member and extending in a direction substantially parallel to the first guide shaft, the second guide shaft being configured to guide the other one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction,
- wherein the second guide shaft is arranged at a position shifted in a substantially vertical direction and in a substantially horizontal direction with respect to the first guide shaft in a state where the headrest main body is mounted to the seatback,
- wherein a stay member is attached to the first frame member, and
- wherein the displacement mechanism comprises:
- a lead screw portion extending in a direction substantially parallel to the first guide shaft, a longitudinal direction of the lead screw portion being the front-rear direction, the lead screw portion having one end coupled to one of the first frame member and the second frame member;
- and
- a driving device fixed to the other one of the first frame member and the second frame member, and comprising a nut portion to be engaged with the lead screw portion,
- wherein the entire driving device is arranged forward of the first frame member.
12 more elements
A headrest comprising:
- a headrest main body mounted to an upper end of a seatback to support a head of a seated person on a seat from a rear side;
- a headrest movable portion arranged forward of the headrest main body and relatively displaceable in a front-rear direction with respect to the headrest main body;
- a first frame member configuring the headrest main body;
- a second frame member configuring the headrest movable portion and being displaceable with respect to the first frame member;
- a displacement mechanism configured to displace the second frame member with respect to the first frame member;
- a first guide shaft fixed to one of the first frame member and the second frame member, and extending in a direction substantially parallel to a displacement direction of the second frame member, the first guide shaft being configured to guide another one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction;
- and
- a second guide shaft fixed to one of the first frame member and the second frame member and extending in a direction substantially parallel to the first guide shaft, the second guide shaft being configured to guide the other one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction,
- wherein the second guide shaft is arranged at a position shifted in a substantially vertical direction and in a substantially horizontal direction with respect to the first guide shaft in a state where the headrest main body is mounted to the seatback,
- wherein the first guide shaft and the second guide shaft are able to protrude outside the first frame member, and
- wherein the displacement mechanism comprises:
- a lead screw portion extending in a direction substantially parallel to the first guide shaft, a longitudinal direction of the lead screw portion being the front-rear direction, the lead screw portion having one end coupled to one of the first frame member and the second frame member;
- and
- a driving device fixed to the other one of the first frame member and the second frame member, and comprising a nut portion to be engaged with the lead screw portion,
- wherein the entire driving device is arranged forward of the first frame member.
12 more elements
A headrest comprising:
- a headrest main body mounted to an upper end of a seatback to support a head of a seated person on a seat from a rear side;
- a headrest movable portion arranged forward of the headrest main body and relatively displaceable in a front-rear direction with respect to the headrest main body;
- a first frame member configuring the headrest main body;
- a second frame member configuring the headrest movable portion and being displaceable with respect to the first frame member;
- a displacement mechanism configured to displace the second frame member with respect to the first frame member;
- a first guide shaft fixed to one of the first frame member and the second frame member, and extending in a direction substantially parallel to a displacement direction of the second frame member, the first guide shaft being configured to guide another one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction;
- and
- a second guide shaft fixed to one of the first frame member and the second frame member and extending in a direction substantially parallel to the first guide shaft, the second guide shaft being configured to guide the other one of the first frame member and the second frame member so as to be displaced in the direction substantially parallel to the displacement direction,
- wherein the second guide shaft is arranged at a position shifted in a substantially vertical direction and in a substantially horizontal direction with respect to the first guide shaft in a state where the headrest main body is mounted to the seatback, and
- wherein the displacement mechanism comprises:
- a lead screw portion extending in a direction substantially parallel to the first guide shaft, a longitudinal direction of the lead screw portion being the front-rear direction, the lead screw portion having one end coupled to one of the first frame member and the second frame member;
- and
- a driving device fixed to the other one of the first frame member and the second frame member, and comprising a nut portion to be engaged with the lead screw portion,
- wherein the lead screw portion is located within an imaginary polygon formed by using the first guide shaft, the second guide shaft, and the at least one third guide shaft to define apexes of the imaginary polygon, and
- wherein the entire driving device is arranged forward of the first frame member.
12 more elements
Dependencies are inferred from the claim text.