IP Library Granted Patent US 7,045,999
Granted Patent B2
US 7,045,999 · App. 10/819,014 · Granted May 16, 2006

Rubber bearing with a jounce sensor

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Quick Facts
Patent No.
US 7,045,999
App. No.
10/819,014
Granted
May 16, 2006
Kind
B2
Abstract

A bearing for a control arm of a wheel suspension of a vehicle has at least one sensor ( 18, 28, 38, 48, 58 ) arranged in or at the bearing ( 11, 21, 31, 41 ). The sensor determines the relative movement of the vehicle parts connected to each other by the bearing ( 11, 21, 31, 31, 41 ).

Claims (43)

1. A bearing for a control arm of a wheel suspension of a vehicle, the bearing comprising:

a bearing structure including an inner and outer ring with a rubber ring arranged between said inner and outer ring to form a rubber bearing, said bearing structure having a magnet pole ring; and

a sensor arranged in or at the bearing structure for determining a relative movement of vehicle parts connected to each other by the bearing structure, said sensor being spaced by a radial distance from a center axis of said outer ring, a magnetic field of said magmatic pole ring is detected by said sensor or by a magnetic field sensor portion of said sensor.

2. A bearing in accordance with claim 1 , wherein said sensor determines the twisting and determines the relative displacement of the vehicle parts connected to each other by the bearing.

3. A bearing in accordance with claim 1 , further comprising magnets wherein said sensor is arranged centrally between at least two said magnets.

4. A bearing in accordance with claim 3 , wherein the poles of said two said magnets have the same direction face each other.

5. A bearing in accordance with claim 1 , wherein the sensor is a magnetoresistive sensor or a Hall sensor.

6. A bearing in accordance with claim 1 , wherein a movement of said bearing is determined by said sensor capacitively or inductively.

7. A bearing in accordance with claim 1 , further comprising a housing fastened to the bearing structure, wherein said sensor is arranged in said housing.

8. A bearing in accordance with claim 1 , further comprising:

a data processing unit calculating the jounce or rebound of at least one wheel or of a vehicle axle of the vehicle from the data of said sensor.

9. A bearing in accordance with claim 8 , wherein the amount of the jounce is used to set the height of the headlight of the vehicle and/or to level the vehicle.

10. A bearing in accordance with claim 1 , wherein:

said sensor is integrated in said rubber bearing.

11. A bearing in accordance with claim 1 , wherein:

said sensor is arranged at said outer ring.

12. A bearing in accordance with claim 11 , wherein:

said two magnets are arranged at said inner ring;

said sensor is arranged between said two magnets.

13. A bearing in accordance with claim 12 , wherein:

said two magnets are arranged at a radial distance from a center axis of said inner ring.

14. A bearing in accordance with claim 13 , wherein:

said two magnets have magnetic poles, said two magnets are arranged to create a magnetic field with a strength that increases toward said magnetic poles.

15. A bearing in accordance with claim 13 , further comprising:

a holding device connecting said sensor to said outer ring;

a fastening part connecting said two magnets to said inner ring, said fastening part including free ends, said two magnets being arranged on said free ends.

16. A bearing in accordance with claim 15 , wherein:

said inner ring has a substantially flat surface, said fastening part is rigidly arranged on said substantially flat surface.

17. A bearing for a control arm of a wheel suspension of a vehicle, the bearing comprising:

a bearing structure including a rubber bearing having an outer ring, an inner ring and a magnet pole ring, said magnetic pole ring being one of fastened to said inner ring or forming the inner ring itself;

a sensor arranged in or at the bearing structure for determining a relative movement of vehicle parts connected to each other by the bearing structure, a magnetic field of said magnet pole ring is detected by said sensor or by a magnetic field sensor portion of said sensor.

18. A bearing for a control arm of a wheel suspension of a vehicle, the bearing comprising:

a bearing structure including a rubber bearing having an outer ring, an inner ring and a magnet pole ring, said magnetic pole ring being one of fastened to said outer ring of said rubber bearing directly, fastened via an intermediate part or forming said outer ring;

a sensor arranged in or at the bearing structure for determining a relative movement of vehicle parts connected to each other by the bearing structure, a magnetic field of said magnet pole ring is detected by said sensor or by a magnetic field sensor portion of said sensor.

19. A vehicle suspension arrangement comprising:

an outer ring;

an inner ring arranged inside said outer ring;

an elastic ring arranged between said outer and said inner ring to flex when said outer ring rotates with respect to said inner ring;

a sensor arranged on one of said inner and outer rings and sensing relative movement of said inner and outer rings, an entirety of said sensor being spaced by a radial distance from a center axis of said outer ring.

20. A bearing for a control arm of a wheel suspension of a vehicle, the bearing comprising:

a bearing structure including an inner and outer ring with a rubber ring arranged between said inner and outer ring to form a rubber bearing;

at least two magnets in or at said bearing structure, poles of said two said magnets having the same direction facing each other; and

a sensor arranged in or at the bearing structure and arranged centrally between said at least two said magnets for determining a relative movement of vehicle parts connected to each other by the bearing structure, said sensor being spaced by a radial distance from a center axis of said outer ring.

Assignments (3)
MERGER AND CHANGE OF NAME Recorded May 30, 2012
From: ZF LEMFORDER GMBH
To: ZF FRIEDRICHSHAFEN AG
Reel/Frame 028291/0814 →
MERGER AND CHANGE OF NAME Recorded May 22, 2012
From: ZF LEMFORDER METALLWAREN AG
To: ZF LEMFORDER GMBH
Reel/Frame 028246/0707 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2004
From: ERSOY, METIN; SPRATTE, JOACHIM; GRANNEMANN, BERND
To: ZF LEMFORDER METALLWAREN AG
Reel/Frame 015187/0707 →