Backrest for a vehicle seat
First Claim
1. A backrest with head support for a vehicle seat, comprising:
- a substantially upright backrest;
a head support mounted in the backrest and adjustable in height with respect to the backrest from a preestablished initial position to a final position commensurate with the height of the head of a person sitting in the vehicle seat, said head support having upper and lower portions;
a capacitive proximity sensor arranged in the upper portion of the head support and having a sensing field directed obliquely downward to be triggered by the upper portion of the back of the person'"'"'s head;
wherein said upper portion of the back of the person'"'"'s head has a curvature and said sensing field has a curvature which is greater than that of said upper portion of the person'"'"'s head;
an indicator responsive to a proximity signal from the proximity sensor dependent on the proximity of said upper portion of the person'"'"'s head to the upper portion of the head support; and
means for adjusting the height of the headrest to a final position at which said proximity signal is triggered.
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Accused Products
Abstract
The invention relates to a backrest for a vehicle seat, with a head support (1) which is adjustable in terms of the height of the head support (1) with respect to the backrest, and with a proximity sensor (5) for detecting the head position of a person sitting on the vehicle seat in relation to the head support (1), an indication for adjusting the head support (1) in the event of a mispositioning and/or an adjustment of the head support (1) by an electric drive (4) out of an initial position taking place until the head of the person sitting on the vehicle seat causes a triggering of the proximity sensor (5), the proximity sensor (5) being arranged in the upper part of the head support (1) and being directed downward onto the region of greatest curvature of the back of the head of the person sitting on the vehicle seat.
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Citations
19 Claims
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1. A backrest with head support for a vehicle seat, comprising:
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a substantially upright backrest; a head support mounted in the backrest and adjustable in height with respect to the backrest from a preestablished initial position to a final position commensurate with the height of the head of a person sitting in the vehicle seat, said head support having upper and lower portions; a capacitive proximity sensor arranged in the upper portion of the head support and having a sensing field directed obliquely downward to be triggered by the upper portion of the back of the person'"'"'s head; wherein said upper portion of the back of the person'"'"'s head has a curvature and said sensing field has a curvature which is greater than that of said upper portion of the person'"'"'s head; an indicator responsive to a proximity signal from the proximity sensor dependent on the proximity of said upper portion of the person'"'"'s head to the upper portion of the head support; and means for adjusting the height of the headrest to a final position at which said proximity signal is triggered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification