CN203786139U - Vehicle speed sensor structure - Google Patents
Vehicle speed sensor structure Download PDFInfo
- Publication number
- CN203786139U CN203786139U CN201320813348.3U CN201320813348U CN203786139U CN 203786139 U CN203786139 U CN 203786139U CN 201320813348 U CN201320813348 U CN 201320813348U CN 203786139 U CN203786139 U CN 203786139U
- Authority
- CN
- China
- Prior art keywords
- vehicle speed
- speed sensor
- sensor housing
- wiring board
- pivot structure
- 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 provides a vehicle speed sensor structure, comprising a rotating shaft structure, a magnetic steel assembly fixedly disposed on the outer side of the rotating shaft structure, a circuit board, a Hall component disposed on the circuit board, and a sensor housing. Two independent cavities are formed in the sensor housing. The circuit board and the Hall component are in one of the cavities. The magnetic steel assembly and the rotating shaft structure are in the other cavity. Using the special design of the sensor housing, the circuit board part is separated from the magnetic steel assembly and the rotating shaft structure, so as to realize separation of the circuit board part and the mechanical part of the magnetic steel, so that the circuit board part and the mechanical part do not interfere each other, and rotation operation of the magnetic steel assembly and the rotating shaft structure is more reliable. Because of design of two cavity structure, engine oil and various liquid would not corrode the circuit board anymore, thereby improving service life of the sensor.
Description
Technical field
The utility model relates to vehicle speed sensor, relates in particular to a kind of Hall vehicle speed sensor structure.
Background technology
Vehicle speed sensor detects the speed of a motor vehicle of electronic automobile, and ECU (Electrical Control Unit) is carried out control engine idling with this input signal, the torque converter locking of automatic transmission, the switching of automatic gearbox gear shifting and cooling fan of engine and other functions such as constant speed of cruising.Hall vehicle speed sensor is to be mainly made up of fixed housing, magnetic pole rotating shaft and Hall element circuit, is arranged in the variator that environment is 150 DEG C of left and right the digital signal of output square waveform.Thereby ECU (Electrical Control Unit) requires stable output signal, without become large or diminish, the situation such as shake, waveform fracture.
Please refer to Fig. 1, hall sensor is mainly made up of connector part, sensor outer housing, Hall element wiring board and magnet steel rotating shaft etc. at present.In the time that wheel starts to rotate, Hall vehicle speed sensor just starts to produce a series of signal.
Through market checking for many years, this Hall vehicle speed sensor has following deficiency:
1, the reliability of Hall element is bad, and output signal is discontinuous;
2, the axial installation requirement of rotating shaft is high.Use long afterwards, stationarity is bad, and Caton phenomenon easily occurs, and causes waveform discontinuous complete;
3, upward, when poor sealing, wiring board easily bubble, in water, makes the components and parts corrosion on wiring board to connector socket;
4, magnet steel dress axle is intermittently to coordinate with sensor housing, and the various liquid such as machine oil, can have corrosive attack to wiring board, then reduces the serviceable life of sensor.
5, magnet steel center must be positioned at Hall integrated circuit center, and not so Hall element induced field intensity is inhomogeneous, and triggering precision is not high.
Utility model content
The technical problems to be solved in the utility model is to provide the vehicle speed sensor structure that mechanical part does not interfere with each other, magnetic axis is reliable of a kind of wiring board part and magnet steel.
In order to solve this technical matters, the utility model provides a kind of vehicle speed sensor structure, comprised pivot structure, be fixedly located at described pivot structure outside magnet steel combination, wiring board, be located at Hall element and a sensor housing on described wiring board, form two cavitys independently mutually in described sensor housing, in a described wiring board and Hall element cavity located therein, the combination of described magnet steel and pivot structure are positioned at cavity described in another.
Preferably, the two ends of described pivot structure are undertaken spacing by described sensor housing and the axle sleeve being fixedly located on described sensor housing respectively.
Preferably, in described sensor housing, be provided with boss, one end of described pivot structure is realized spacing by described boss.
Preferably, the end of described boss is provided with spring structure, and described spring structure connects respectively described boss and described pivot structure along its flexible direction.
Preferably, one end of described axle sleeve is connected with described pivot structure, and the other end is provided with packing washer.
Preferably, described Hall element is positioned at the radial outside of described magnet steel combination, and in another airtight cavity.
Preferably, described vehicle speed sensor structure also comprises a web member, and the outside surface of described sensor housing is provided with the connector in order to be connected with the external world, and described web member is through described sensor housing, one end is connected to described wiring board, and the other end is connected to described connector.
Preferably, the cavity at described wiring board and Hall element place is isolated from the outside by a lid.
The utility model utilizes the particular design of sensor housing, wiring board part and magnet steel combination and pivot structure are separated, realized the separating of mechanical part of wiring board part and magnet steel, both are no longer interfered with each other, make magnet steel combination more reliable with the rotating operation of pivot structure, the while is due to the design of two chamber structures, the various liquid such as machine oil, can there is not corrosive attack to wiring board again, and then improve the serviceable life of sensor.
Brief description of the drawings
Fig. 1 is the schematic diagram of hall sensor of the prior art;
Fig. 2 is the schematic diagram of the vehicle speed sensor structure that provides of the utility model one embodiment;
In figure, 1-sensor housing; 2-boss; The combination of 3-magnet steel; 4-pivot structure; 5-axle sleeve; 6-packing washer; 7-spring structure; 8-Hall element; 9-wiring board; 10-lid; 11-web member; 12-connector.
Embodiment
Below with reference to Fig. 2, the utility model is described in detail, it is the utility model one optional embodiment, can think that those skilled in the art, not changing in the scope of the utility model spirit and content, can modify and polish it.
Please refer to Fig. 2, the present embodiment provides a kind of vehicle speed sensor structure, comprised pivot structure 4, be fixedly located at described pivot structure 4 outsides magnet steel combination 3, wiring board 9, be located at Hall element 8 and a sensor housing 1 on described wiring board 9, form two cavitys independently mutually in described sensor housing, in described wiring board 9 and Hall element 8 cavity located therein, the combination 3 of described magnet steel and pivot structure 4 are positioned at cavity described in another.That is, a chamber is magnet steel mechanical rotation part, and another chamber is Hall electronic switch part.Described pivot structure 4 can think that it is fixedly connected with the rotating shaft of sensor, even integrated parts.
In magnet steel mechanical rotation part, the two ends of described pivot structure 4 are undertaken spacing by described sensor housing 1 and the axle sleeve 5 being fixedly located on described sensor housing 1 respectively.In described sensor housing 1, be provided with boss 2, one end of described pivot structure 4 is realized spacing by described boss 2.In the present embodiment, the end of described boss 2 is provided with spring structure 7, and then realizes spacingly by described spring structure 7, and described spring structure 7 connects respectively described boss 2 and described pivot structure 4 along its flexible direction.Spacing in order to realize, described pivot structure 4 can arrange bulge-structure, counterbore etc. on concrete structure, to adapt to the parts such as boss 2, spring structure 7, axle sleeve 5, the present embodiment does not do specific explanations, as long as understand that it plays position-limiting action, those skilled in the art naturally can obtain some conventional means and go reply.In the present embodiment, one end of described axle sleeve 5 is connected with described pivot structure 4, and the other end is provided with packing washer 6.
Magnet steel mechanical rotation part is mainly realize the rotation of magnet steel and fix.In the time that wheel box turns round, the sensor rotating shaft being coupled is with it rotated thereupon, so make the pivot structure 4 that is fixedly connected with sensor rotating shaft and with pivot structure 4 also synchronous rotary.Owing to being headed on by parts such as the boss 2 of sensor housing 1 on magnet steel combination 3 and pivot structure 4 thereof, under supported by axle sleeve 5, thereby reaching integral type fixes, and can not cause that rotation is interfered, the phenomenon that gets stuck, and avoids the unsettled situation of output signal.
Described Hall element 8 is positioned at the radial outside of described magnet steel combination 3, and in another airtight cavity.Hall element 8 and the axial plane of magnet steel combination 3 are responded to.Induction area is large herein, can make magnetic field to greatest extent by the surface of Hall element, and Hall triggering precision is improved like this.And owing to being axial plane induction, convenient to the installation meeting of magnetic axis.
In the present embodiment, described vehicle speed sensor structure also comprises a web member 11, the outside surface of described sensor housing 1 is provided with the connector 12 in order to be connected with the external world, described web member 12 is through described sensor housing 1, one end is connected to described wiring board 9, the other end is connected to described connector 12, to realize being connected of wiring board 9 and other extraneous parts.
The cavity at described wiring board 9 and Hall element 8 places is isolated from the outside by a lid 10.The present embodiment separates wiring board 9 and pivot structure 4, and the outside lid 10 that uses seals in addition, makes it in an environment sealing, and wiring board 9 and Hall element 8 are played a very good protection, and has the benefits such as high temperature resistant, corrosion-resistant.
In sum, the utility model utilizes the particular design of sensor housing, wiring board part and magnet steel combination and pivot structure are separated, the separating of mechanical part of having realized wiring board part and magnet steel, no longer interferes with each other both, makes magnet steel combination more reliable with the rotating operation of pivot structure, while is due to the design of two chamber structures, the various liquid such as machine oil, can not have corrosive attack to wiring board again, and then has improved the serviceable life of sensor.
Claims (8)
1. a vehicle speed sensor structure, comprised pivot structure, be fixedly located at described pivot structure outside magnet steel combination, wiring board, be located at Hall element and a sensor housing on described wiring board, it is characterized in that: form two cavitys independently mutually in described sensor housing, in a described wiring board and Hall element cavity located therein, the combination of described magnet steel and pivot structure are positioned at cavity described in another.
2. vehicle speed sensor structure as claimed in claim 1, is characterized in that: the two ends of described pivot structure are undertaken spacing by described sensor housing and the axle sleeve being fixedly located on described sensor housing respectively.
3. vehicle speed sensor structure as claimed in claim 2, is characterized in that: in described sensor housing, be provided with boss, one end of described pivot structure is realized spacing by described boss.
4. vehicle speed sensor structure as claimed in claim 3, is characterized in that: the end of described boss is provided with spring structure, and described spring structure connects respectively described boss and described pivot structure along its flexible direction.
5. vehicle speed sensor structure as claimed in claim 2, is characterized in that: one end of described axle sleeve is connected with described pivot structure, and the other end is provided with packing washer.
6. vehicle speed sensor structure as claimed in claim 1, is characterized in that: described Hall element is positioned at the radial outside of described magnet steel combination.
7. vehicle speed sensor structure as claimed in claim 1, it is characterized in that: also comprise a web member, the outside surface of described sensor housing is provided with the connector in order to be connected with the external world, described web member is through described sensor housing, one end is connected to described wiring board, and the other end is connected to described connector.
8. vehicle speed sensor structure as claimed in claim 1, is characterized in that: the cavity at described wiring board and Hall element place is isolated from the outside by a lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813348.3U CN203786139U (en) | 2013-12-10 | 2013-12-10 | Vehicle speed sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320813348.3U CN203786139U (en) | 2013-12-10 | 2013-12-10 | Vehicle speed sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786139U true CN203786139U (en) | 2014-08-20 |
Family
ID=51322313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320813348.3U Expired - Fee Related CN203786139U (en) | 2013-12-10 | 2013-12-10 | Vehicle speed sensor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316717A (en) * | 2014-11-17 | 2015-01-28 | 吉林大学 | Voltage transformation type speed measurement device for magnetic liquid |
| CN104698209A (en) * | 2013-12-10 | 2015-06-10 | 上海森太克汽车电子有限公司 | Speed sensor structure |
-
2013
- 2013-12-10 CN CN201320813348.3U patent/CN203786139U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698209A (en) * | 2013-12-10 | 2015-06-10 | 上海森太克汽车电子有限公司 | Speed sensor structure |
| CN104316717A (en) * | 2014-11-17 | 2015-01-28 | 吉林大学 | Voltage transformation type speed measurement device for magnetic liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20201210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |