Head Rest Control Device and Active Head Rest
1 Assignment
0 Petitions
Accused Products
Abstract
It is an object of this invention to provide an active headrest which will not over-push the head of a passenger. For this purpose, the invention provides a headrest controller for moving a part (20A) or whole of a headrest (20) of a vehicle seat toward a head of the passenger to reduce the distance between the headrest (20) and the head in the horizontal direction by predicting or detecting a crash to the rear of the vehicle, including a head position detecting unit (11) for detecting a predetermined state of approach or state of contact of the headrest (20) to or with the head during the movement of the headrest (20) and a control circuit for stopping the headrest based on a detection signal from the head position detecting unit (11).
-
Citations
33 Claims
-
1-13. -13. (canceled)
-
14. A headrest controller for moving a headrest of a vehicle seat toward a head of a passenger comprising:
-
a headrest and an object positioned adjacent the headrest;
a head position detecting unit including a first sensor to detect a distance between the object and the headrest, and a second sensor for detecting contact between the object and the headrest; and
a control circuit to alter movement of the headrest based on a detection signal from the head position detection unit. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A headrest controller comprising:
-
a crash detecting sensor for predicting or detecting a crash to a rear of a vehicle;
a headrest driving mechanism for moving part or whole of a headrest toward a head of a passenger to reduce the distance between the headrest and the head;
a head position detecting unit including a first sensor to detect a distance between the head and the headrest, and a second sensor for detecting contact between the head and the headrest;
a control circuit for operating the headrest driving mechanism when the crash detecting sensor outputs a detection signal and altering movement of the headrest driving mechanism when the had position detecting unit outputs a detection signal, further wherein the control circuit alter, wherein the control circuit stops the headrest when the predetermined state of approach or state of contact is detected by either of the sensors. - View Dependent Claims (21, 22, 23, 24, 25)
-
-
26. A headrest device comprising:
-
a front portion and a back portion;
a head position detecting unit including a first sensor to detect a distance between an object moving towards the front portion and the front portion, and a second sensor for detecting contact between the object and the front portion; and
a control circuit to alter movement of the front portion based on a detection signal from the head position detecting unit. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33)
-
Specification