Sensor device for a vehicle seat

• US 20050229721A1
• Filed: 04/21/2005
• Published: 10/20/2005
• Est. Priority Date: 01/31/2003
• Status: Active Grant

• Current Assignee: Keiper GmbH & Company KG (Johnson Controls International plc)
• Original Assignee: Keiper GmbH & Company KG (Johnson Controls International plc)
• Inventors: Hippel, Daniel, Diehl, Andreas, Edrich, Hans, Schuler, Rolf, Grossbudde, Frank, Borbe, Michael
• Granted Patent: US 7,360,460 B2
• Time in Patent Office: Days
• US Class Current: 73/862.381
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/0152 using strain gauges

Abstract

In a vehicle seat, in particular a motor vehicle seat, a sensor device (11) is arranged between the superstructure of the vehicle seat and the seat rail (3) of the vehicle seat, in order to measure forces transmitted from the superstructure into the seat rail (3). The sensor device (11) can be positioned at least partially inside the seat rail (3).

Claims

1. A substructure apparatus for at least partially carrying a vehicle seat superstructure and measuring forces transmitted from the superstructure, the substructure apparatus comprising:

at least one seat rail; and

at least one sensor device mounted so that the sensor device is at least partially positioned inside the seat rail and is for being at least partially between the seat rail and the superstructure, for measuring the forces transmitted from the superstructure to the seat rail.

2. The substructure apparatus according to claim 1, wherein:

the sensor device includes a flexible arm,

the arm includes a central section and end sections, and

the arm is suspended from the seat rail by way of at least one section selected from the group consisting of the central section of the seat rail and the end sections of the seat rail.

3. The substructure apparatus according to claim 2, wherein:

the arm includes at least one projection,

the projection extends through an opening in the seat rail, and

the projection extends from the central section of the seat rail or one of the end sections of the seat rail.

4. The substructure apparatus according to claim 3 in combination with at least a portion of the superstructure, wherein:

the portion of the superstructure is an adaptor, and

the adaptor is attached to the projection.

5. The combination according to claim 4, wherein:

the sensor device is a first sensor device,

the combination further comprises a second sensor device mounted so that the second sensor device is at least partially positioned in the seat rail, is attached to the adaptor, and is at least partially between the seat rail and the adaptor, for measuring the forces transmitted from the superstructure to the seat rail, and

the second sensor device is spaced apart from the first sensor device.

6. The combination according to claim 4, wherein the sensor device is operative:

for keeping the adaptor spaced apart from the seat rail when the forces are less than a predetermined magnitude, and

so that the adaptor engages the seat rail in response to the forces reaching or exceeding the predetermined magnitude.

7. The substructure apparatus according to claim 2, wherein:

the arm is operative for bending in response to the forces, and

the sensor device is operative for measuring the forces by detecting the bending of the arm.

8. The substructure apparatus according to claim 7, wherein the sensor device includes at least one sensor element for detecting the bending of the arm, and the sensor element is a Hall sensor or a strain gauge.

9. The substructure apparatus according to claim 2, wherein the sensor device is operative for measuring the forces by detecting pressure conditions in the arm.

10. The substructure apparatus according to claim 9, wherein the sensor device includes at least one sensor element for detecting the pressure conditions in the arm, and the sensor element is a piezoelectric sensor.

11. The substructure apparatus according to claim 10, wherein the arm includes a slit that at least partially defines a hinge, and the piezoelectric sensor is positioned in the slit.

12. The substructure apparatus according to claim 1 in combination with the superstructure, wherein the sensor device is connected to the superstructure and is at least partially between the seat rail and the superstructure.

13. The combination according to claim 5, wherein the first and second sensor devices are operative:

for keeping the adaptor spaced apart from the seat rail when the forces are less than a predetermined magnitude, and

so that the adaptor engages the seat rail in response to the forces reaching or exceeding the predetermined magnitude.

14. The substructure apparatus according to claim 3, wherein:

the arm is operative for bending in response to the forces, and the sensor device includes at least one sensor element for measuring the forces by detecting the bending of the arm.

15. The combination according to claim 4, wherein:

the arm is operative for bending in response to the forces, and

the sensor device includes at least one sensor element for measuring the forces by detecting the bending of the arm.

16. The combination according to claim 6, wherein:

the arm is operative for bending in response to the forces, and

the sensor device includes at least one sensor element for measuring the forces by detecting the bending of the arm.

17. The combination according to claim 3, wherein the sensor device includes at least one sensor element for measuring the forces by detecting pressure conditions in the arm.

18. The combination according to claim 4, wherein the sensor device includes at least one sensor element for measuring the forces by detecting pressure conditions in the arm.

19. The combination according to claim 6, wherein the sensor device includes at least one sensor element for measuring the forces by detecting pressure conditions in the arm.

20. The substructure apparatus according to claim 1, wherein the sensor device'"'"'s core component is positioned inside the seat rail.

21. The substructure apparatus according to claim 1, wherein:

the sensor device includes a flexible arm and at least one projection,

the arm is substantially positioned inside the seat rail, and

the projection extends from the arm, through an opening in the seat rail, so that a portion of the projection is inside the seat rail and another portion of the projection is outside the seat rail.