CN201724943U - Electromagnetic type automobile wheel speed sensor - Google Patents
Electromagnetic type automobile wheel speed sensor Download PDFInfo
- Publication number
- CN201724943U CN201724943U CN2010202181687U CN201020218168U CN201724943U CN 201724943 U CN201724943 U CN 201724943U CN 2010202181687 U CN2010202181687 U CN 2010202181687U CN 201020218168 U CN201020218168 U CN 201020218168U CN 201724943 U CN201724943 U CN 201724943U
- Authority
- CN
- China
- Prior art keywords
- sensor
- wheel speed
- speed sensor
- automobile wheel
- gear ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The utility model discloses an electromagnetic type automobile wheel speed sensor. The induction coil (4) is arranged in a frame groove at the lower end of a sensor casing (1), the wire is wound on electrode pins (3) at the upper end of the sensor casing (1), a permanent magnet (5) is arranged in the lower sensor casing (1), and a wire clamp support (2) is arranged at the upper end of the sensor casing (1). As the sensor is fixed on an automobile bridge, and the magnetic poles are aligned with the gear ring, the magnetic space between the magnetic poles and the gear ring is always unchanged in automobile driving process no matter how violent the vibration is. Work performance stability is improved. The lower ends of the magnetic poles are exposed, magnetic losses are reduced, and magnetic flux between the magnetic poles and the gear ring is increased, so the measurement accuracy of the automobile wheel speed sensor is improved. The sensor protects the coil from breakage, and the gear ring is convenient to change.
Description
Technical field: the utility model relates to a kind of electromagnetic type automobile wheel speed sensor.
Background technology: anti-lock braking system in automobiles is commonly called as ABS, is the important leverage system of vehicle safety travel, and its major function is to prevent wheel lock up when automobile emergency is braked.Automobile wheel speed sensor is a sensitive element crucial in the automobile ABS, and its performance is determining the quality of ABS.And the magnetic in the existing automobile wheel speed sensor is grey and gear ring between yoke distance easily produce fluctuation, cause unstable properties.
The utility model content: the utility model has overcome above-mentioned weak point, provide a kind of simple in structure, volume is little, be applicable to the magneto-electric automotive speed sensor of automobile engine management system.The technical solution adopted in the utility model is: described inductive coil 4 devices are in the skeleton grooves of sensor outer housing 1 lower end, its lead is wrapped on the electrode pin 3 that is arranged on sensor outer housing 1 upper end, permanent magnet 5 devices are in 1 time inside of sensor outer housing, and card line bearing 2 installs tops on sensor outer housing 1.
The beneficial effects of the utility model are: because this device is fixed on the automobile crane span structure, pole pair is lived gear ring, how strong no matter produce vibrations in the vehicle traveling process, the yoke distance of asking of magnetic pole in the automobile wheel speed sensor and gear ring is constant all the time, and the stability of work is improved.The lower end of magnetic pole is exposed, reduced magnetic loss, increased the magnetic flux between magnetic pole and gear ring, thereby improved the measuring accuracy of automobile wheel speed sensor.And volume is little, simple in structure, the protection coil, and frangibility is not convenient to change.
Description of drawings: Fig. 1 is a main cut-open view of the present utility model
Fig. 2 is the side view of Fig. 1
Embodiment: as shown in Figure 1 and Figure 2, described inductive coil 4 devices are in the skeleton grooves of sensor outer housing 1 lower end, its lead is wrapped on the electrode pin 3 that is arranged on sensor outer housing 1 upper end, permanent magnet 5 devices are in 1 time inside of sensor outer housing, and card line bearing 2 installs tops on sensor outer housing 1.
As shown in Figure 1 and Figure 2,1 time bottom of sensor outer housing is stretched out in the lower surface of described permanent magnet 5, and its quantity is that stack is provided with more than 2.
As shown in Figure 1 and Figure 2, described electrode pin 3 and card line bearing 2 respectively are 2.
Claims (3)
1. electromagnetic type automobile wheel speed sensor, it is characterized in that inductive coil (4) device is in the skeleton grooves of sensor outer housing (1) lower end, its lead is wrapped on the electrode pin (3) that is arranged on sensor outer housing (1) upper end, permanent magnet (5) device is inner down at sensor outer housing (1), and card line bearing (2) device is gone up the top at sensor outer housing (1).
2. according to the described electromagnetic type automobile wheel speed sensor of claim 1, it is characterized in that bottom under the sensor outer housing (1) is stretched out in the lower surface of permanent magnet (5), its quantity is that stack is provided with more than 2.
3. according to the described electromagnetic type automobile wheel speed sensor of claim 1, it is characterized in that electrode pin (3) and card line bearing (2) respectively are 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202181687U CN201724943U (en) | 2010-06-01 | 2010-06-01 | Electromagnetic type automobile wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202181687U CN201724943U (en) | 2010-06-01 | 2010-06-01 | Electromagnetic type automobile wheel speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201724943U true CN201724943U (en) | 2011-01-26 |
Family
ID=43493283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202181687U Expired - Fee Related CN201724943U (en) | 2010-06-01 | 2010-06-01 | Electromagnetic type automobile wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201724943U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674073A (en) * | 2012-08-31 | 2014-03-26 | 鼎佳（天津）汽车电子有限公司 | Three-pole-piece sensor |
| CN103675323A (en) * | 2013-12-02 | 2014-03-26 | 施董腾 | Magnetoelectric tachometric transducer and test device thereof |
-
2010
- 2010-06-01 CN CN2010202181687U patent/CN201724943U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674073A (en) * | 2012-08-31 | 2014-03-26 | 鼎佳（天津）汽车电子有限公司 | Three-pole-piece sensor |
| CN103675323A (en) * | 2013-12-02 | 2014-03-26 | 施董腾 | Magnetoelectric tachometric transducer and test device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20130601 |