Vehicle seat assembly and method of controlling a vehicle seat assembly

• US 8,678,463 B2
• Filed: 06/21/2012
• Issued: 03/25/2014
• Est. Priority Date: 06/21/2012
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Willey, Mark R.
• Primary Examiner(s): Dayoan, Glenn
• Assistant Examiner(s): BLANKENSHIP, GREGORY A
• Application Number:
  US13/529,537
• Publication Number:
  US 20130341986A1
• Time in Patent Office: 642 Days
• Field of Search: 296 6501- 6518
• US Class Current: 296/65.01
• CPC Class Codes: B60N 2/0252 with relations between different adjustments, e.g. height of headrest following longitudinal position of seat
• CPC Class Codes: B60N 2/0272 using sensors or detectors for detecting the position of seat parts
• CPC Class Codes: B60N 2002/957 the locking system prevents an abnormal or wrong mounting situation, i.e. deployment or functioning of a seat part being prevented if the seat or seat part is not properly mounted

Abstract

A vehicle seat assembly includes a seat portion disposed in a relatively horizontal alignment, wherein the seat portion is moveable. Also included is a seat back rotatable about a first axis proximate a rear portion of the seat portion. Further included is a memory seat module (MSM) configured to monitor and control movement of the seat portion and the seat back, and comprises a sensor configured to activate upon movement of the seat portion and/or the seat back to a predetermined position, wherein the MSM automatically restricts movement of the seat portion and/or the seat back upon detection of activation of the sensor. The MSM further engages other required movements to return the vehicle seat assembly to earlier stored locations with the process being repeated a maximum number of times to transition the seat portion and seat back to their required positions that have been predetermined by the user.

Claims

1. A vehicle seat assembly comprising:

a seat portion disposed in a relatively horizontal alignment, wherein the seat portion is moveable in at least one direction;

a seat back rotatable about a first axis proximate a rear portion of the seat portion; and

a memory seat module configured to monitor and control movement of the seat portion and the seat back, wherein the memory seat module comprises a sensor configured to activate upon movement of at least one of the seat portion and the seat back to a predetermined position, wherein the predetermined position corresponds to a contact location between an object and at least one of the seat portion and the seat back, wherein the object is disposed rearward of the seat back, wherein the memory seat module restricts movement of at least one of the seat portion and the seat back upon detection of activation of the sensor, wherein the sensor comprises a bulkhead sensor comprising at least one switch, wherein the bulkhead sensor is disposed on at least one of a rear side of the seat back and the object disposed rearward of the seat back.

2. The vehicle seat assembly of claim 1, wherein the seat portion is translatable along a first plane and rotatable about a second axis.

3. The vehicle seat assembly of claim 1, wherein the memory seat module is configured to translate the seat portion forward for a predefined distance along a first plane upon activation of the bulkhead sensor.

4. The vehicle seat assembly of claim 1, wherein the predetermined position corresponds to a combined forwardly rotated position of the seat back and a rearward translation of the seat portion.

5. A vehicle seat assembly comprising:

a seat portion disposed in a relatively horizontal alignment, wherein the seat portion is moveable in at least one direction;

a seat back rotatable about a first axis proximate a rear portion of the seat portion; and

a memory seat module configured to monitor and control movement of the seat portion and the seat back, wherein the memory seat module comprises a sensor configured to activate upon movement of at least one of the seat portion and the seat back to a predetermined position, wherein the memory seat module restricts movement of at least one of the seat portion and the seat back upon detection of activation of the sensor, wherein the memory seat module is in operable communication with the sensor for providing a switched battery signal to the sensor.

6. The vehicle seat assembly of claim 5, wherein the operable communication between the memory seat module and the sensor is configured to determine whether the sensor is in an activated state or a deactivated state.

7. The vehicle seat assembly of claim 6, wherein the activated state corresponds to a short to battery electrical circuit, and wherein the deactivated state corresponds to a short to ground electrical circuit.

8. A method of controlling a vehicle seat assembly comprising:

monitoring the position of at least one of a seat portion and a seat back, wherein the seat portion is moveable in at least one direction and the seat back is rotatable about a first axis proximate a rear portion of the seat portion;

activating a sensor upon movement of at least one of the seat portion and the seat back to a predetermined position;

restricting movement of at least one of the seat portion and the seat back upon detection of activation of the sensor; and

providing a switched battery output signal to the sensor during movement of at least one of the seat portion and the seat back to form an electrical circuit.

9. The method of claim 8, further comprising initiating a diagnostic process upon detection of activation of the sensor.

10. The method of claim 9, wherein the predetermined position corresponds to a contact location between an object and at least one of the seat portion and the seat back, wherein the object is disposed rearward of the seat back.

11. The method of claim 10, wherein the predetermined position corresponds to a combined forwardly rotated position of the seat back and a rearward translation of the seat portion.

12. The method of claim 9, further comprising determining whether the sensor is in an activated state or a deactivated state based on a first configuration of the electrical circuit and a second configuration of the electrical circuit.

13. The method of claim 12, wherein the first configuration of the electrical circuit comprises a short to battery configuration corresponding to the activated state, and wherein the second configuration of the electrical circuit comprises a short to ground configuration corresponding to the deactivated state.

14. The method of claim 12, further comprising allowing movement of at least one of the seat portion and the seat back if the sensor is in the deactivated state.

15. The method of claim 8, further comprising restricting movement of at least one of the seat portion and the seat back for a predetermined time duration.

16. The method of claim 15, wherein the predetermined time duration comprises a completion of a current ignition cycle.