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 to an end position with respect to the backrest;
at least two capacitive proximity sensors arranged in the head support for detecting the position of the head of a person sitting in the vehicle seat in relation to the head support; and
an indicator responsive to proximity signals from the proximity sensors dependent on the proximity of the person'"'"'s head to the headrest;
wherein each proximity sensor comprises an electrode in the head support that generates an electric field,wherein each proximity sensor detects a distinct capacitance of its electrode in relation to the head, andwherein the two proximity sensors produce an indication of the position of the head support with respect to the head as a function of said detected distinct capacitances.
3 Assignments
0 Petitions
Accused Products
Abstract
The present disclosure relates to a backrest for vehicle seat, with a head support (1) which is adjustable in terms of height with respect to the backrest, and with a sensor arranged in the head support (1) and intended for detecting the position of the head of a person sitting on the vehicle seat in relation to the head support (1) and for indicating an adjusted end position, in the head support (1) at least two sensors being arranged, designed as capacitive proximity sensors (5, 14), which indicate the position of the head support (1) with respect to the head (P) as a function of the detected capacitances which are to be found as a capacitance on the electrodes formed by the head (P) and one of the at least two proximity sensors (5, 14) each.
-
Citations
21 Claims
-
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 to an end position with respect to the backrest; at least two capacitive proximity sensors arranged in the head support for detecting the position of the head of a person sitting in the vehicle seat in relation to the head support; and an indicator responsive to proximity signals from the proximity sensors dependent on the proximity of the person'"'"'s head to the headrest; wherein each proximity sensor comprises an electrode in the head support that generates an electric field, wherein each proximity sensor detects a distinct capacitance of its electrode in relation to the head, and wherein the two proximity sensors produce an indication of the position of the head support with respect to the head as a function of said detected distinct capacitances. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
Specification