CN2201668Y - Automotive revolution number sensing device - Google Patents
Automotive revolution number sensing device Download PDFInfo
- Publication number
- CN2201668Y CN2201668Y CN 93239571 CN93239571U CN2201668Y CN 2201668 Y CN2201668 Y CN 2201668Y CN 93239571 CN93239571 CN 93239571 CN 93239571 U CN93239571 U CN 93239571U CN 2201668 Y CN2201668 Y CN 2201668Y
- Authority
- CN
- China
- Prior art keywords
- magnet
- magnetic
- isolation plate
- transmission shaft
- revolution sensor
- 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
Links
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model relates to the improvement of an automotive revolution number sensing device. The utility model comprises a shell body, a transmission shaft, a magnetic induction element and a magnet, wherein, the magnet is fixed on the irrotational shell body, a magnetism isolating board which can rotate with the transmission shaft is arranged between the magnet and the magnetic induction element, the magnetism isolating board is provided with through holes or through slots along a circumference, and the number of the through holes or the through slots is corresponding to a sensing angle. The utility model has the advantages of simple manufacturing technique of the automotive revolution number sensing device, reliable work and low cost.
Description
The utility model relates to the improvement of automobile with revolution sensor.
Existing automobile is rotated with transmission shaft by the magnetic code dish that has several permanent magnets (can reach dozens of for a long time) with revolution sensor, and when magnet turned over before magnetic induction part, magnetic induction part sent induced signal.Owing to use a plurality of magnet, manufacturing process complexity not only, and the uneven or processing because of the magnetic of magnet, assembling time error cause distortion, thereby have reduced the functional reliability of sensing device.
Task of the present utility model is that a kind of manufacturing process of design is simple, the automobile revolution sensor of reliable operation.
Technical solution of the present utility model is that this automobile comprises housing, transmission shaft, magnetic induction part, magnet with revolution sensor, magnet is installed on the fixing non-rotary housing, the magnetic isolation plate that can rotate with transmission shaft is arranged with between magnetic induction part at magnet, magnetic isolation plate is along garden Zhou Kaiyou and sensing angle the adapt through hole or the groove of quantity, and the setting of through hole and groove is that the through hole or the groove that can make the magnetic line of force of magnet pass magnetic isolation plate act on the magnetic induction part.
Advantage of the present utility model and good effect: adopt fixed magnet and magnetic isolation plate to replace a plurality of rotary magnets, simplified manufacturing process greatly, a hole on the magnetic isolation plate replaces an original magnet, and the magnetoconductivity at each place, hole is identical, this brings the sensing device work mistake with regard to the uneven or indivedual magnet magnetic forfeitures of the magnetic of having been avoided each magnet, improved the functional reliability of automobile, also reduced the manufacturing cost of automobile simultaneously with revolution sensor with revolution sensor.
Description of drawings
Fig. 1 is the axial cut-open view of an automobile with revolution sensor.
Fig. 2 is that magnet, magnetic induction part are contained in the synoptic diagram on the same housing.
Fig. 3 is a magnetic isolation plate front elevation of opening the hole
Fig. 4 is a magnetic isolation plate front elevation of opening groove.
Embodiment:
Below in conjunction with accompanying drawing the utility model is elaborated.
By housing, transmission shaft, magnetic induction part, magnet, the automobile revolution sensor that magnetic isolation plate is formed, a permanent magnet (5) is fixed on the housing (6), also can be installed on the housing (1), make by permeability magnetic material electrical pure iron or plain carbon steel, the magnetic isolation plate (4) that has through hole (7) or groove (8) is connected and fixed on transmission shaft (2) with fastening, also available screw of magnetic isolation plate (4) or rivet and transmission shaft (2) link, magnetic isolation plate (4) also can be made of one with transmission shaft (2), and the through hole (7) on the magnetic isolation plate (4) or the setting of groove (8) are that the through hole (7) or the groove (8) that can make the magnetic line of force of magnet (5) pass magnetic isolation plate (4) act on the magnetic induction part (3).
Automobile with the course of work of revolution sensor is: transmission shaft (2) is connected with axle that need to survey revolution and during by drive, magnetic isolation plate (4) turns between magnetic induction part (3) and permanent magnet (5), on the magnetic isolation plate (4) not the entity of perforate or groove partly through therebetween the time, the magnetic line of force of magnet (5) is by magnetic isolation plate (4) bypass, the magnetic line of force can not arrive on the magnetic induction part (3), the hole (7) of magnetic isolation plate (4) or groove (8) are through therebetween the time, the magnetic line of force of magnet (5) passes the hole (7) of magnetic isolation plate (4) or groove (8) and acts on the magnetic induction part (3), makes it that corresponding angular signal take place.
Introduced the basic structure of the utility model design above, belong to design of the present utility model and be not limited to this, for example magnetic induction part also can be fixed on the fastening part that connects of housing on, the form of permanent magnet can be various, also can not be one but several, these all be like products of the present utility model.
Claims (5)
1, a kind of automobile comprises housing, transmission shaft, magnetic induction part, magnet with revolution sensor, it is characterized in that magnet is installed on the fixing non-rotary housing, the magnetic isolation plate that can rotate with transmission shaft is arranged with between magnetic induction part at magnet, magnetic isolation plate is along garden Zhou Kaiyou and sensing angle the adapt through hole or the groove of quantity, and the setting of through hole and groove is that the through hole or the groove that can make the magnetic line of force of magnet pass magnetic isolation plate act on the magnetic induction part.
2, automobile according to claim 1 is characterized in that with revolution sensor magnet (5) is permanent magnet.
3, automobile according to claim 1 and 2 is characterized in that with revolution sensor magnet (5) is fixed on installation housing (6) or the housing (1).
4, automobile revolution sensor according to claim 1 is characterized in that magnetic isolation plate (4) made by permeability magnetic material electrical pure iron or plain carbon steel.
5, it is characterized in that with revolution sensor magnetic isolation plate (4) is fastening the connection with transmission shaft (2) according to claim 1 or 4 described automobiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239571 CN2201668Y (en) | 1993-11-19 | 1993-11-19 | Automotive revolution number sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239571 CN2201668Y (en) | 1993-11-19 | 1993-11-19 | Automotive revolution number sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2201668Y true CN2201668Y (en) | 1995-06-21 |
Family
ID=33814067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93239571 Expired - Fee Related CN2201668Y (en) | 1993-11-19 | 1993-11-19 | Automotive revolution number sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2201668Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324302C (en) * | 2002-09-18 | 2007-07-04 | Zf雷姆伏尔德金属制品股份公司 | Rotational and/or tilting angle recording device for ball-pit joint |
| CN110186685A (en) * | 2019-04-17 | 2019-08-30 | 重庆彤星科技有限公司 | A kind of automobile engine dynamic date reading device |
-
1993
- 1993-11-19 CN CN 93239571 patent/CN2201668Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324302C (en) * | 2002-09-18 | 2007-07-04 | Zf雷姆伏尔德金属制品股份公司 | Rotational and/or tilting angle recording device for ball-pit joint |
| CN110186685A (en) * | 2019-04-17 | 2019-08-30 | 重庆彤星科技有限公司 | A kind of automobile engine dynamic date reading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |