Headrest
First Claim
1. A headrest, comprising:
- a base portion attached to an upper part of a seat;
a receive portion for receiving a head of an occupant sitting on the seat and movable between a first position adjacent to the base portion and a second position separate from the base portion;
a first connecting portion for connecting the base portion with the receive portion and including a first link and a second link relatively rotatably supported to the first link;
a drive input portion provided at least at either one of the first link and the second link; and
a motor for driving the first connecting portion through the drive input portion to move the first connecting portion in a manner causing the receive portion to move from the second position to the first position, whereina first end portion of the first link is supported by the base portion through a first pivot point,a second end portion of the first link is supported by the receive portion through a second pivot point,a first end portion of the second link is slidably connected to a first elongated guide portion provided at the base portion through a first connecting point so that the first connecting point is slidable along the first elongated guide portion,a second end portion of the second link is slidably connected to a second elongated guide portion provided at the receive portion through a second connecting point so that the second connecting point is slidable along the second elongated guide portion, anda driving force is applied to the drive input portion by the motor in a moving direction of the receive portion toward the second position upon either prediction or detection of a vehicular rear-end collision.
1 Assignment
0 Petitions
Accused Products
Abstract
In a headrest, a first connecting portion, including a first link and a second link relatively rotatably supported to the first link, is provided between a base portion and a receive portion movable between a first and second positions adjacent to/separate from the base portion. A drive portion drives the first connecting portion through a drive input portion provided at least either one of the first and second links by applying a driving force to the drive input portion in a moving direction of the receive portion toward the second position. First and second end portions of the first link are supported by the base portion and the receive portion through first and second pivot points. First and second end portions of the second link are slidably connected to first and second guide portions respectively provided at the base portion and the receive portion through first and second connecting points.
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Citations
15 Claims
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1. A headrest, comprising:
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a base portion attached to an upper part of a seat; a receive portion for receiving a head of an occupant sitting on the seat and movable between a first position adjacent to the base portion and a second position separate from the base portion; a first connecting portion for connecting the base portion with the receive portion and including a first link and a second link relatively rotatably supported to the first link; a drive input portion provided at least at either one of the first link and the second link; and a motor for driving the first connecting portion through the drive input portion to move the first connecting portion in a manner causing the receive portion to move from the second position to the first position, wherein a first end portion of the first link is supported by the base portion through a first pivot point, a second end portion of the first link is supported by the receive portion through a second pivot point, a first end portion of the second link is slidably connected to a first elongated guide portion provided at the base portion through a first connecting point so that the first connecting point is slidable along the first elongated guide portion, a second end portion of the second link is slidably connected to a second elongated guide portion provided at the receive portion through a second connecting point so that the second connecting point is slidable along the second elongated guide portion, and a driving force is applied to the drive input portion by the motor in a moving direction of the receive portion toward the second position upon either prediction or detection of a vehicular rear-end collision. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A headrest, comprising:
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a base portion attached to an upper part of a seat; a receive portion for receiving a head of an occupant sitting on the seat and movable between a first position adjacent to the base portion and a second position separate from the base portion; a first connecting portion provided between the base portion and the receive portion for connecting the base portion with the receive portion and including a first link and a second link relatively rotatably supported to the first link by a support shaft; and
a drive input portion provided at the support shaft, the drive input portion to which a driving force is applied from a motor upon either prediction or detection of a vehicular rear-end collision, and wherein the drive input portion passes through the first link and the second link;wherein a first end portion of the first link is supported by the base portion through a first pivot point, a second end portion of the first link is supported by the receive portion through a second pivot point, a first end portion of the second link is slidably connected to a first guide portion provided at the base portion through a first connecting point, and a second end portion of the second link is slidably connected to a second guide portion provided at the receive portion through a second connecting point. - View Dependent Claims (11, 12)
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13. A headrest, comprising:
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a base portion attached to an upper part of a seat; a receive portion for receiving a head of an occupant sitting on the seat and movable between a first position adjacent to the base portion and a second position separate from the base portion; a first connecting portion provided between the base portion and the receive portion for connecting the base portion with the receive portion; and a drive input portion provided at the first connecting portion, the drive input portion to which a driving force is applied from a motor, wherein the driving force is applied to the drive input portion by the motor in a moving direction of the receive portion toward the second position upon either prediction or detection of a vehicular rear-end collision, and the first connecting portion includes a first link and a second link relatively rotatably supported to the first link, a first end portion of the first link is supported by the base portion through a first pivot point, a second end portion of the first link is supported by the receive portion through a second pivot point, a first end portion of the second link is slidably connected to a first guide portion provided at the base portion through a first connecting point, and a second end portion of the second link is slidably connected to a second guide portion provided at the receive portion through a second connecting point. - View Dependent Claims (14, 15)
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Specification