Haptic vehicle seat

• US 7,681,949 B2
• Filed: 04/12/2006
• Issued: 03/23/2010
• Est. Priority Date: 04/12/2006
• Status: Active Grant

• Current Assignee: Lear Corporation
• Original Assignee: Lear Corporation
• Inventors: Young, Oliver J., Powell, David A., Nathan, John F., Maue, H. Winston
• Primary Examiner(s): Barfield; Anthony D
• Application Number:
  US11/279,487
• Publication Number:
  US 20070241595A1
• Time in Patent Office: 1,441 Days
• Field of Search: 297/217.3, 297/260.2, 297/330, 601 51- 54, 601 56- 65, 591/5
• US Class Current: 297/217.3
• CPC Class Codes: B06B 3/00 Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
• CPC Class Codes: B60N 2/64 Back-rests or cushions B60N2/2222 takes precedence
• CPC Class Codes: B60N 2/70 Upholstery springs ; Upholstery
• CPC Class Codes: B60N 2002/981 Warning systems, e.g. the seat or seat parts vibrates to warn the passenger when facing a danger
• CPC Class Codes: B60Q 9/00 Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 , e.g. haptic signalling
• CPC Class Codes: H02K 5/00 Casings; Enclosures; Supports
• CPC Class Codes: H02K 7/061 using rotary unbalanced masses for generating mechanical vibrations in general B06B1/16

Abstract

A haptic seat and system for use in imparting sensations to an occupant thereof. The haptic seat may be used to alert passengers of various operating conditions with some sort of tactile sensation, such as a vibration, pulse, shake, or other inducement that involves the occupant'"'"'s sense of touch.

Claims

1. A haptic vehicle seat comprising:

a seat cushion for supporting an occupant, the seat cushion having top, bottom and sides that together define a support area having a support material;

an impulse distribution arm in communication with the seat cushion;

an actuator removably clipped to the arm with a press-fit connection, the actuator being configured to induce a vibration into the arm that travels throughout the seat cushion, the actuator being embedded within the support material between the sides and below the top of the support area; and

wherein the seat cushion includes a pair of cloth or leather trim linings sown together at a plastic trim bracket and wherein the trim bracket forms at least a portion of the impulse distribution arm.

2. The seat of claim 1 wherein the impulse distribution arm rests on a top side of the support material.

3. The seat of claim 2 wherein the impulse distribution arm rests within a trench on the top side of the support material.

4. The seat of claim 1 wherein the impulse distribution arm and actuator are covered by the support material.

5. The seat of claim 1 wherein the actuator includes a motor that rotates an eccentric weight in order to vibrate the arm.

6. The seat of claim 5 wherein the actuator includes a housing surrounding the motor and weight, an outer portion of the housing including an integrally molded fastener that establishes the press-fit connection of the actuator to the arm.

7. The seat of claim 1 further comprising at least one additional impulse distribution arm and actuator, each actuator being attached to different impulse distribution arms.

8. The seat of claim 1 wherein the seat cushion includes a connecting feature for connecting to a seat track mounted on a vehicle floor.

9. The seat of claim 1 wherein the seat cushion is part of seat bottom or seat back, each of the seat bottom and seat back having a generally rectangular shape, wherein the arm in a non-structural element that mimics the generally rectangular shape of the seat bottom or seat back.

10. A haptic seating system for use with a vehicle, the system comprising:

a controller configured to issue a warning signal as a function of vehicle operating parameters;

a vehicle seat having a trim lining surrounding at least a top and side circumferential portion of a seat cushion made of a support material, the trim lining being of a different material than the support material;

wherein at least two portions of the trim lining are sown together at a location below an outside, exposed surface of the trim lining that is hidden from view; and

an actuator in communication with the controller, the actuator being removably clipped to the at least two sown and hidden portions of the trim lining and configured to vibrate the trim lining in response to receipt of the warning signal.

11. The system of claim 10 further comprising an impulse distribution arm connected to the actuator that rests on a top side of the support material and that vibrates with the trim lining.

12. The system of claim 11 wherein the impulse distribution arm rests within a trench on the top side of the support material.

13. The system of claim 10 further comprising an impulse distribution arm connected to the actuator that is embedded within the support material.

14. The system of claim 10 wherein the actuator includes a motor, rotatable shaft, and eccentric weight, the motor configured to rotate the eccentric weight in order to vibrate the arm.

15. The system of claim 14 wherein the actuator is embedded within that support material such that all sides of the actuator, except for a portion connected to the trim lining, are covered by the support material.

16. The system of claim 10 wherein at least a portion of each of the at least two sown and hidden portions extend vertically downward from a top horizontal portion of the trim lining.

17. The system of claim 16 wherein the actuator removably attaches only to the portions that extend vertically downward.

18. The system of claim 17 wherein the actuator is removably clipped to the portions that extend vertically downward with a compression force.

19. A haptic vehicle seat comprising:

a seat cushion for supporting an occupant, the seat cushion having a cushioning material surrounded by a cloth or leather material;

an impulse distribution arm extending around substantially all of an outer perimeter of the seat cushion;

an actuator configured to induce a vibration into the arm such that the vibration travels around substantially all of the of the outer perimeter of the seat cushion, wherein the actuator is positioned below a top of the cushioning material at a depth that causes any vibrations induced by the actuator to the cushioning material to be substantially insignificant relative to the vibration inducted to the impulse distribution arm; and

wherein the arm has a goal-post shape, the goal-post shape four straight leg portions where a center one of the legs forms a center portion from which two of the legs extend in a direction opposite to a last one of the legs, and wherein the last one of the legs is the only leg directly connected to the actuator.

20. The haptic vehicle seat of claim 19 wherein the depth is such that the actuator is vibrationally isolated from the seat occupant in that any vibrations induced by the actuator to the cushioning material are not noticeably communicated to the top side of the cushioning material and the surrounded cloth or leather material.

21. The haptic vehicle seat of claim 19 wherein the actuator includes a motor configured to rotate a shaft connected to an eccentric weight and the arm is cylindrically shaped throughout, the cylindrically shaped arm having a diameter approximately equal to a diameter of the shaft.