System and method for actuation of a head restraint

• US 7,556,306 B2
• Filed: 11/20/2006
• Issued: 07/07/2009
• Est. Priority Date: 11/21/2005
• Status: Expired due to Fees

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Hein, David, Yetukuri, Arjun, Jammalamadaka, Sai Prasad
• Primary Examiner(s): Pedder; Dennis H
• Application Number:
  US11/601,940
• Publication Number:
  US 20070114810A1
• Time in Patent Office: 960 Days
• Field of Search: 296 63- 69, 296/1.11, 297/408, 297/410
• US Class Current: 296/63
• CPC Class Codes: B60N 2/0224 Non-manual adjustments, e.g. with electrical operation
• CPC Class Codes: B60N 2/0226 User interfaces specially adapted for seat adjustment
• CPC Class Codes: B60N 2/0278 using sensors external to the seat for measurements in relation to the seat adjustment, e.g. for identifying the presence of obstacles or the appropriateness of the occupants position
• CPC Class Codes: B60N 2/832 movable to an inoperative or stowed position
• CPC Class Codes: B60N 2/856 movable to an inoperative or stowed position
• CPC Class Codes: B60N 2210/12 Capacitive; Electric field
• CPC Class Codes: B60N 2210/18 Infrared
• CPC Class Codes: B60N 2220/20 using a deterministic algorithm
• CPC Class Codes: B60N 2230/10 Wired data transmission
• CPC Class Codes: B60N 2230/20 Wireless data transmission
• CPC Class Codes: B60N 2230/30 Signal processing of sensor data

Abstract

A system and method for remote actuation of a vehicle head restraint includes an actuator arrangement configured to effect movement of a head restraint from a raised position to a lowered position. A sensor defines a first area, and is configured to output signals to the actuator arrangement to facilitate movement of the head restraint from its raised position to its lowered position when an object comes within a predetermined distance of the first area. The sensor is disposed proximate a rearview mirror in the vehicle such that a user can simultaneously view the head restraint in the mirror and the first area. Remote actuation systems using infrared sensor assemblies such infrared proximity sensors are disclosed.

Claims

1. A system for remote actuation of at least one vehicle head restraint movable from a respective raised position to a respective lowered position, the system comprising:

a first head restraint;

a first actuator arrangement configured to effect movement of the first head restraint from its raised position to its lowered position; and

a first infrared sensor assembly having an infrared emitter and an infrared detector, the first infrared sensor assembly defining a first target area mapped to the location of an image of the first head restraint in a rearview mirror such that output signals are sent to the first actuator arrangement to facilitate movement of the first head restraint from its raised position to its lowered position when an object comes within a predetermined distance of the first target area.

2. The system of claim 1 wherein the object must be within the first target area for a predetermined period of time before movement of the headrest is actuated.

3. The system of claim 1 wherein the first infrared sensor assembly is disposed proximate to a rearview mirror such that a user can simultaneously view the first head restraint in the mirror and the first area.

4. The system of claim 1 wherein the first infrared sensor assembly defines at least one additional target area.

5. The system of claim 1 further comprising a switch that disables movement of the first head restraint when a user is adjusting the rearview mirror.

6. The system of claim 1 further comprising a vehicle seat occupant sensor that senses the presence of an occupant in a first seat that includes the first head restraint so that the first head restraint is not movable from the raised to the lowered positions.

7. The system of claim 6 further comprising an occupant sensor disabling switch.

8. The system claim 1 further comprising a component that configures the system for wireless communication with the first actuator arrangement.

9. The system of claim 8 wherein the wireless communication utilizes a radio frequency signal.

10. The system of claim 1 further comprising:

at least one additional head restraint; and

at least one additional actuator arrangement configured to effect movement of a respective head restraint from its raised position to its lowered position.

11. The system of claim 10 wherein the first infrared sensor assembly defines at least one additional target area and is configured to output signals to the additional actuator arrangement, to independently facilitate movement of the additional head restraint from its respective raised position to its lowered position when an object comes within a predetermined distance of the additional target area.

12. The system of claim 10 further comprising:

at least one additional infrared sensor assembly configured to be independently actuated by the user, the additional infrared sensor assembly comprising an infrared emitter and an infrared detector and defining an additional target area.

13. A system for remote actuation of at least one vehicle head restraint movable from a respective raised position to a respective lowered position, the vehicle including a rearview mirror, the system comprising:

a first head restraint;

a first actuator arrangement configured to effect movement of the first head restraint from its raised position to its lowered position; and

a first infrared sensor defining a first area mapped to the location of an image of the first head restraint in the mirror and configured to output signals to the first actuator arrangement to facilitate movement of the first head restraint from its raised position to its lowered position when an object comes within a predetermined distance of the first area, the first sensor being disposed such that a user can simultaneously view the first head restraint in the mirror while activating the first sensor.

14. The system of claim 13 wherein the first sensor is disposed proximate to the mirror such that a user can simultaneously view the first head restraint in the mirror and the first area.

15. The system of claim 13 wherein the first sensor is operable to move the first head restraint if the object is within the predetermined distance for a first predetermined period of time.

16. The system of claim 13, further comprising:

at least one additional head restraint;

at least one additional actuator arrangement configured to independently effect movement of the additional head restraint from a raised position to a lowered position; and

at least one additional sensor, the additional sensor defining an additional area and configured to output signals to the additional actuator arrangement and to facilitate movement of the additional head restraint from its raised position to its lowered position when an object comes within a predetermined distance of the additional area, the additional sensor being disposed proximate the mirror such that the user can simultaneously view the the additional head restraint in the mirror and the additional area.

17. The system of claim 16 further comprising an indicator to indicate which head restraint is being moved from raised to lowered positions.