Vehicle wheel speed detection system and method

Patent metadata

Field	Value
Publication number	US-9921237-B2
Application number	US-201414896545-A
Country	US
Kind code	B2
Filing date	May 24, 2014
Priority date	Jun 29, 2013
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A sensor apparatus for detecting a wheel speed of a vehicle has a rod-shaped sensor carrier and a sensor, which is introduced into the sensor carrier and, in order to detect the wheel speed, senses the rotation of a rotor rotating together with the wheel. The sensor apparatus has a carrier structure for accommodating the sensor and a potting compound for filling the sensor carrier. The surface, in particular the lateral surface, of the sensor carrier is formed by a plurality of interrupted, metal surface areas of the carrier structure and areas filled with the potting compound, wherein at least two metal surface areas are in the form of contact surfaces.

First claim

What is claimed is:

1. A sensor device for detecting a wheel speed of a vehicle, the sensor device comprising:
a rod-shaped sensor carrier; and
a sensor insertable into the sensor carrier, the sensor configured to sense rotation of a rotor rotating with a wheel of the vehicle;
the rod-shaped sensor carrier including a metal support structure configured to accommodate the sensor, a potting compound filling the sensor carrier within the support structure, a lateral surface including a plurality of metal surface areas of the support structure that are spaced apart from each other and to define open areas filled with the potting compound, and at least two metal contact surfaces forming exterior sidewalls of the rod-shaped sensor carrier and being oppositely disposed to enclose a portion of the potting compound and the sensor therebetween, and
at least two stabilizers disposed transversely to a longitudinal axis of the sensor carrier and interconnecting the at least two metal contact surfaces.

2. The sensor device as claimed in claim 1 , wherein the support structure includes a guide projection for facilitating oriented insertion of the sensor device into an available clamping bush.

3. The sensor device as claimed in claim 1 , wherein the support structure is formed from a carrier strip as a stamped and bent part.

4. The sensor device as claimed in claim 1 , further comprising a sensor supporting surface within the support structure for attaching the sensor.

5. The sensor device as claimed in claim 1 , further comprising a front cover surface of the support structure.

6. The sensor device as claimed in claim 1 , further comprising an attachment surface within the support structure for attaching at least one connecting cable of the sensor.

7. The sensor device as claimed in claim 1 , further comprising at least one attachment tab on at least one of the at least two metal contact surfaces.

8. The sensor device as claimed in claim 1 , wherein the sensor is one of an active sensor and a passive sensor.

9. The sensor device as claimed in claim 1 , wherein the sensor device is clamped into a clamping bush, the clamping bush having clamping elements that abut the at least two metal contact surfaces of the sensor device.

10. The sensor device as claimed in claim 9 , wherein the sensor device forms part of the vehicle.

11. The sensor device as claimed in claim 1 , wherein the sensor device forms part of a wheel speed detection system for a vehicle driver assistance system, the wheel speed detection system comprising the sensor device and a control unit, the control unit being configured to process signals or data from the sensor device for at least one of open-loop control functions and closed-loop control functions.

12. The sensor device as claimed in claim 11 , wherein the sensor device forms part of the vehicle.

13. The sensor device as claimed in claim 1 , wherein the sensor device forms part of the vehicle.

Assignees

• Wabco Gmbh

Inventors

• Kuster Klaus

Classifications

• G01P3/487

  delivered by rotating magnets · CPC title

• G01P3/488 Primary

  delivered by variable reluctance detectors · CPC title

• G01D11/245

  Housings for sensors · CPC title

• G01P1/026

  for speed measuring devices, e.g. pulse generator · CPC title