CN201555857U - Active wheel speed sensor - Google Patents
Active wheel speed sensor Download PDFInfo
- Publication number
- CN201555857U CN201555857U CN2009202011113U CN200920201111U CN201555857U CN 201555857 U CN201555857 U CN 201555857U CN 2009202011113 U CN2009202011113 U CN 2009202011113U CN 200920201111 U CN200920201111 U CN 200920201111U CN 201555857 U CN201555857 U CN 201555857U
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- CN
- China
- Prior art keywords
- chip
- cable
- wheel speed
- bush
- lining
- 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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Abstract
The utility model relates to an automotive electronic wheel speed measuring sensor, in particular to an active wheel speed sensor which comprises a cable, a fixed seat and a bush, wherein the cable is positioned in the fixed seat; the front end of the cable is connected with the bush; the bush is internally provided with magnet steel and a chip; the magnet steel is positioned in the top end of the bush; one side of the chip is connected with the magnet steel and the other side thereof is exposed on the outer wall of the bush; and the chip is communicated with the inside conductor of the cable through a chip pin. The wheel speed sensor has the advantages: 1. the chip sensing surface is exposed on the outer wall of the bush, and the distance between the chip and an induction magnetic coil is increased, thus improving signal output strength; and 2. the manufacturing processes are less, and the production process is simple.
Description
Technical field
The utility model relates to the sensor that a kind of automotive electronics is measured wheel speed, particularly a kind of active wheel speed sensor.
Background technology
At present, at home and abroad on high-grade car and the high-grade truck employed sensor have four types: a, magnetoelectric induction sensor; B, hall sensor; C, eddy current sensor; D, electro-optical pickoff, wherein the most widely used is magnetoelectric induction sensor.This magnetoelectric induction sensor is made up of magnetic block, coil, shielding case and lead-in wire, coil winding is at the outside surface of magnetic block, and place in the shielding case, magnetic block is rectangular parallelepiped or cylindrical bar, its magnetic is arranged on the two ends of bar, there is following shortcoming in it: the one, and institute's induced voltage that obtains is little when the speed of a motor vehicle＜15km/h, is difficult to guarantee the ABS operate as normal, and Hyundai Motor requires speed also to want to guarantee the ABS operate as normal when 2-3km/h; The 2nd, when the speed of a motor vehicle reaches 200km/h when above,, lose signal easily, and produce misoperation because frequency response is low; The 3rd, diamagnetic electrical interference ability.And comprise sensing head, cable, socket and electronic circuit for hall sensor, cable connects as one sensing head, socket, the sensing head top encapsulation has Hall chip and permanent magnet, and existing hall sensor, all there is following shortcoming: the one, poor stability, when specifically installing and using, its output waveform needs artificial the adjustment; The 2nd, the not enough sensor of distance of reaction is touched gear ring easily; The 3rd, manufacturing process's complexity, manufacturing cost height.
The utility model summary of the invention
The purpose of this utility model is exactly the weak point in the background technology, provides a kind of simple in structure, and in the production run, manufacturing process is few, the simple active wheel speed sensor of manufacture craft.
For achieving the above object, the utility model adopts following technical scheme: active wheel speed sensor, comprise cable, holder and lining, cable is positioned at holder, and its front end is connected with lining, is provided with magnet steel and chip in the described lining, magnet steel is positioned at inside, lining top, chip one side is connected with magnet steel, and opposite side is exposed to the lining outer wall, and chip is communicated with the cable inside conductor by the chip stitch.
For a kind of optimization of the present utility model, described cable front end is connected with lining end thread hole by fixed head.
The utility model is compared with background technology, and having one is that the chip sensitive surface exposes and the lining outer wall, has increased the distance of chip with the induction magnetosphere, thereby has improved the output intensity of signal; The 2nd, manufacturing process is few, and production technology is simple.
Description of drawings
Fig. 1 is the cross-sectional view of active wheel speed sensor.
Fig. 2 is the structural representation after active wheel speed sensor is removed holder.
The utility model is elaborated with reference to accompanying drawing below in conjunction with embodiment.
Embodiment
Embodiment 1: with reference to Fig. 1 and 2.Active wheel speed sensor, comprise cable 10, holder 8 and lining 3, cable 10 is positioned at holder 8, and its front end is connected with lining 3, is provided with magnet steel 2 and chip 1 in the described lining 3, magnet steel 2 is positioned at inside, lining 3 top, chip 1 one sides are connected with magnet steel 2, and opposite side is exposed to lining 3 outer walls, and chip 1 is communicated with cable 10 inside conductors 9 by chip stitch 5, described lead front end is provided with connector 7, and chip stitch 5 is connected with connector 7.Cable 10 front ends are connected with lining 3 end thread holes 4 by fixed head 6.Holder 8 comprises that with lining 3 rear ends fixed head 6 and cable 10 fore-ends encapsulate, to improve the anti-electromagnetic interference capability of sensor integral body and chip signal output transmission line.
What need understand is: though present embodiment compares detailed explanation to the utility model; but these explanations; just to simple declaration of the present utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.
Claims (2)
1. active wheel speed sensor, comprise cable (10), holder (8) and lining (3), cable (10) is positioned at holder (8), and its front end is connected with lining (3), be provided with magnet steel (2) and chip (1) in the described lining (3), it is characterized in that: magnet steel (2) is positioned at lining (3) inside, top, and chip (1) one side is connected with magnet steel (2), opposite side is exposed to lining (3) outer wall, and chip (1) is communicated with cable (10) inside conductor (9) by chip stitch (5).
2. active wheel speed sensor according to claim 1 is characterized in that: cable (10) front end is connected with lining (3) end thread hole (4) by fixed head (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202011113U CN201555857U (en) | 2009-11-26 | 2009-11-26 | Active wheel speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202011113U CN201555857U (en) | 2009-11-26 | 2009-11-26 | Active wheel speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555857U true CN201555857U (en) | 2010-08-18 |
Family
ID=42615545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202011113U Expired - Fee Related CN201555857U (en) | 2009-11-26 | 2009-11-26 | Active wheel speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555857U (en) |
-
2009
- 2009-11-26 CN CN2009202011113U patent/CN201555857U/en not_active Expired - Fee Related
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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: 20100818 Termination date: 20121126 |