CN203704947U - Vehicle speed and mileage sensor - Google Patents
Vehicle speed and mileage sensor Download PDFInfo
- Publication number
- CN203704947U CN203704947U CN201420076709.5U CN201420076709U CN203704947U CN 203704947 U CN203704947 U CN 203704947U CN 201420076709 U CN201420076709 U CN 201420076709U CN 203704947 U CN203704947 U CN 203704947U
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- China
- Prior art keywords
- rotating shaft
- transmission shaft
- fixed leg
- shaft
- vehicle speed
- 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 - Lifetime
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- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000009987 spinning Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a sensor used for measuring running speed and travelling mileage of a vehicle. The vehicle speed and mileage sensor comprises an outer casing with an inner chamber, wherein a fixed column with a vertically arranged axis is arranged inside the inner chamber of the outer casing; a transmission shaft is rotationally assembled to the fixed column; the lower end of the transmission shaft is connected with the output shaft of a vehicle gearbox; the fixed column is inserted into the transmission shaft; ring-shaped magnetic steel is arranged on the periphery of the transmission shaft; a Hall element used for sensing a magnetic field produced by the magnetic steel is arranged on the outer casing; bearings are arranged between the fixed column and the transmission shaft; inner wall surface and outer wall surface of each bearing are mounted on the fixed column and the transmission shaft respectively. According to the utility model, the arrangement of the bearings between the transmission shaft and the fixed column enables the transmission shaft to rotate only around the fixed column and not to move back and forth in the axial direction of the fixed column. As a result, a definite value is maintained for the gap formed between the Hall element and the ring-shaped magnetic steel and a stable waveform can be output by the Hall element.
Description
Technical field
The utility model relates to a kind of travel speed for measuring vehicle and the vehicle speed mileage sensor of the mileage of advancing, and belongs to automotive vehicle speed and mileage field of measuring technique.
Background technology
Vehicle speed mileage sensor is mounted on the wheel box of vehicle, a kind of sensor that the travel speed of vehicle and the mileage of advancing are measured, and vehicle speed mileage sensor mainly contains the several types such as magneto-electric, dry-reed, photo-electric, Hall-type.A kind of Hall-type vehicle speed mileage sensor of the prior art comprises the shell with inner chamber, in the inner chamber of shell, be provided with fixed leg, on fixed leg, be equipped with transmission shaft, one end of transmission shaft offers cavity, fixed leg is inserted in the cavity of transmission shaft, the other end of transmission shaft is connected with the output shaft of vehicle gear box, the outer peripheral face that transmission shaft has one end of cavity is provided with the magnet steel of a ring shape, on shell, the position of corresponding transmission shaft upper magnetic steel is provided with Hall element, Hall element is arranged on the wiring board on shell, the output shaft of wheel box drives transmission shaft to rotate in the time rotating, drive the magnet steel on transmission shaft to rotate simultaneously, Hall element senses the changes of magnetic field of magnet steel, to the car running computer ECU output pulsating wave of vehicle, car running computer ECU outputs to the travel speed of vehicle and the mileage signal of advancing on speedometer.Because the transmission shaft of vehicle speed mileage sensor and the output shaft of wheel box belong to hard connection, the bias of the output shaft on wheel box is easy to cause the transmission shaft wearing and tearing of vehicle speed mileage sensor and stuck, finally causes vehicle speed mileage sensor inefficacy.In order to solve transmission shaft wearing and tearing and stuck problem, prior art adopts a kind of vehicle speed mileage sensor with buffer structure, this vehicle speed mileage sensor is to arrange and the spring of fixing capital press fit in the cavity of transmission shaft, between fixed leg and spring, be provided with ball, the buffer action of spring can prevent that transmission shaft is stuck and can reduce the wearing and tearing of transmission shaft.But, due to the effect of spring, transmission shaft can be along self axis play back and forth, magnet steel on transmission shaft will move around with transmission shaft like this, and Hall element is fixed on shell, this is little when large will make the gap of magnet steel and Hall element time, causes the waveform of Hall element output unstable, this will affect the pointing accuracy of speedometer, even can cause the erroneous judgement of car running computer ECU.
Summary of the invention
The purpose of this utility model is to provide the vehicle speed mileage sensor that a kind of gap that can guarantee magnet steel and Hall element is definite value, to solve the unsettled problem of waveform of Hall element output of vehicle speed mileage sensor of prior art.
The utility model adopts following technical scheme: a kind of vehicle speed mileage sensor, comprise the shell with inner chamber, in the inner chamber of shell, be provided with the fixed leg that axis vertically arranges, on fixed leg, be rotatably equipped with the transmission shaft that lower end is connected with automobile gearbox output shaft, described fixed leg is inserted in transmission shaft, the outer peripheral face of transmission shaft is provided with annular magnet steel, described shell is provided with the Hall element in the magnetic field for responding to described magnet steel generation, between described fixed leg and transmission shaft, be provided with bearing, the internal face of described bearing and outside wall surface are arranged on respectively on fixed leg and transmission shaft.
Described transmission shaft comprises the first rotating shaft of being assemblied on fixed leg and the spinning only of pegging graft fits over the second rotating shaft of the first rotating shaft lower end, and described magnet steel is arranged on the outer peripheral face of the first rotating shaft, and the second described rotating shaft is for being connected with automobile gearbox output shaft.
The bottom of described the first rotating shaft is provided with the cross groove that the degree of depth is extended along the axis direction of the first rotating shaft, and the top of described the second rotating shaft has the cruciform bulge-structure of identical inserting in described cross groove.
The top of described the first rotating shaft has the cylindrical hole inserting for fixed leg, this cylindrical hole is the through hole being communicated with described cross groove, on the cruciform bulge-structure on described the second rotating shaft top, offer along the blind hole of the Axis Extension of the second rotating shaft, in this blind hole, be provided with spring, described fixed leg passes clutch shaft bearing and described spring top press fit.
Described bearing is rolling bearing, and the inner ring of this rolling bearing is fixed on fixed leg, outer ring is fixed on transmission shaft.
The utility model arranges bearing between transmission shaft and fixed leg, transmission shaft can only be rotated around fixed leg, and can be along the axially play back and forth of fixed leg, therefore the gap of Hall element and annular magnetic steel remains a definite value, thus the waveform that Hall element just can stable output.Therefore use the utility model can not affect the pointing accuracy of speedometer, and car running computer ECU also can not judge by accident.
Further, because the first rotating shaft of the present utility model is rotated and is assemblied on fixed leg by bearing, and the second rotating shaft to pass be that the only spinning of pegging graft fits in the first rotating shaft, because magnet steel is fixed in the first rotating shaft, therefore the gap of magnet steel and Hall element can not change; The second rotating shaft not only can be under the drive of the first rotating shaft and is rotated, and the second rotating shaft can also along axis move up and down prevent stuck.
Further, cruciform bulge-structure in the second rotating shaft coincide inserting in the cross groove of the first rotating shaft, and what such structure can make that the second rotating shaft can be more stable is inserted in the first rotating shaft.
Further, in the blind hole of the second rotating shaft, be provided with spring, the buffer action of spring can prevent that the second rotating shaft is stuck and can reduce the wearing and tearing of the second rotating shaft.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the first rotating shaft in Fig. 1;
Fig. 3 is the upward view of Fig. 2;
Fig. 4 is the structural representation of the second rotating shaft in Fig. 1;
Fig. 5 is the vertical view of Fig. 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
A kind of embodiment of the present utility model as shown in Figures 1 to 5, the vehicle speed mileage sensor of the present embodiment comprises the shell 1 with inner chamber, in the inner chamber of shell, be provided with the fixed leg 2 that axis vertically arranges, this fixed leg 2 is wholely set with shell 1, the opening down setting of shell inner cavity, the opening part of shell is provided with the internal thread on automobile gearbox for spinning, on fixed leg 2, be rotatably equipped with the transmission shaft that lower end is connected with automobile gearbox output shaft, transmission shaft comprises rotating and is assemblied in the first rotating shaft 31 on fixed leg 2 and the spinning only of pegging graft fits over the second rotating shaft 32 of the first rotating shaft 31 lower ends, the outer peripheral face of the first rotating shaft 31 is provided with annular magnet steel 41, on shell 1, the position of corresponding magnet steel is provided with the Hall element 42 in the magnetic field for responding to described magnet steel generation, Hall element 42 is arranged on the wiring board 43 on shell, wiring board 43 is connected with car running computer ECU by wire, on shell 1, be also provided with the gland bonnet 44 for wiring board 43 is sealed, the lower end of the second described rotating shaft 32 is for being connected with automobile gearbox output shaft, the upper end of the first rotating shaft 31 has the circular port inserting for fixed leg, between the first rotating shaft 31 and fixed leg 2, be provided with bearing 5, the bearing 5 of the present embodiment adopts rolling bearing, the inner ring of this rolling bearing is fixed on fixed leg 2, outer ring is fixed in the first rotating shaft 31.The bottom of the first rotating shaft is provided with the cross groove that the degree of depth is extended along the axis direction of the first rotating shaft, the top of the second rotating shaft has the cruciform bulge-structure of identical inserting in described cross groove, the cylindrical hole on the first rotating shaft top is the through hole being communicated with the cross groove of the first rotating shaft bottom, on the cruciform bulge-structure on the second rotating shaft top, offer along the blind hole of the Axis Extension of the second rotating shaft, in this blind hole, be provided with spring 33, described fixed leg 1 passes the first rotating shaft 31 and extend in the blind hole of the second rotating shaft 32 and described spring 33 top press fits, between fixed leg 1 and spring 33, be provided with ball 34.The middle part of the second rotating shaft 32 is provided with annular gear edge, the bottom in chamber is provided with the annular buckle 6 coordinating along block with described annular gear in the enclosure, this annular buckle 6 can prevent that the second rotating shaft 32 from deviating from from the inner chamber of shell, on shell 1, be positioned at annular snap button below be provided with for by the O-ring seal of the bore seal of shell 7.
The vehicle speed mileage sensor of the present embodiment in use, the shell of vehicle speed mileage sensor is arranged on wheel box, and the second rotating shaft is connected with the output shaft of wheel box, output shaft of gear-box drives the second rotating shaft rotation in the time rotating, because the second rotating shaft is the lower end of being stopped spinning and fitted over the first rotating shaft by cruciform bulge-structure, the second rotating shaft will drive the first rotating shaft rotation when rotated, owing to being provided with bearing between the first rotating shaft and fixed leg, the first rotating shaft can only be rotated around fixed leg, and can be along the axially play back and forth of fixed leg, therefore the gap of Hall element and magnet steel remains a definite value, thereby Hall element just can be to the pulsating wave of the car running computer ECU stable output of vehicle, car running computer ECU outputs to the travel speed of vehicle and the mileage signal of advancing on speedometer.Because fixed leg passes the spring top press fit in the first rotating shaft and the second rotating shaft blind hole, under the elastic buffer effect of spring, when the second rotating shaft rotation, can also move up and down along its axis, can prevent that like this second rotating shaft is stuck, and reduce the wearing and tearing of the second rotating shaft.
Above-described embodiment is the preferred a kind of embodiment of the utility model, in other embodiment of the present utility model, transmission shaft can not adopt the first rotating shaft and the second rotating shaft to peg graft and only screw the structure of closing, and adopt all-in-one-piece structure, offer the cylindrical hole inserting for fixed leg in the upper end of transmission shaft, between transmission shaft and fixed leg, bearing is installed, the internal face of this bearing and outside wall surface are arranged on respectively on fixed leg and transmission shaft, and the lower end of transmission shaft is directly connected with the output shaft of wheel box.
In other embodiment of the present utility model, the bearing between transmission shaft and fixed leg can also adopt sliding bearing.
In other embodiment of the present utility model, the first rotating shaft and the second rotating shaft can adopt the structure of convex-concave docking only to revolve and be assembled together, as offered polygon groove structure in the first rotating shaft lower end, arranging in the second rotating shaft upper end coincide is assemblied in the polygon bulge-structure in polygon groove.
In other embodiment of the present utility model, the spring in the second rotating shaft and ball are not essential, in the time that reality is used, can save.
Claims (5)
1. a vehicle speed mileage sensor, comprise the shell (1) with inner chamber, in the inner chamber of shell, be provided with the fixed leg (2) that axis vertically arranges, on fixed leg (2), be rotatably equipped with the transmission shaft that lower end is connected with automobile gearbox output shaft, described fixed leg is inserted in transmission shaft, the outer peripheral face of transmission shaft is provided with annular magnet steel (41), described shell (1) is provided with the Hall element (42) in the magnetic field for responding to described magnet steel generation, it is characterized in that: between described fixed leg (2) and transmission shaft, be provided with bearing (5), internal face and the outside wall surface of described bearing (5) are arranged on respectively on fixed leg and transmission shaft.
2. a kind of vehicle speed mileage sensor according to claim 1, it is characterized in that: described transmission shaft comprises the first rotating shaft (31) of being assemblied on fixed leg (2) and the spinning only of pegging graft fits over second rotating shaft (32) of the first rotating shaft lower end, described magnet steel (41) is arranged on the outer peripheral face of the first rotating shaft (31), and described the second rotating shaft (32) is for being connected with automobile gearbox output shaft.
3. a kind of vehicle speed mileage sensor according to claim 2, it is characterized in that: the bottom of described the first rotating shaft (31) is provided with the cross groove that the degree of depth is extended along the axis direction of the first rotating shaft, and the top of described the second rotating shaft (32) has the cruciform bulge-structure of identical inserting in described cross groove.
4. a kind of vehicle speed mileage sensor according to claim 3, it is characterized in that: the top of described the first rotating shaft (31) has the cylindrical hole inserting for fixed leg, this cylindrical hole is the through hole being communicated with described cross groove, on the cruciform bulge-structure on described the second rotating shaft (32) top, offer along the blind hole of the Axis Extension of the second rotating shaft, in this blind hole, be provided with spring (33), described fixed leg (2) passes the first rotating shaft (31) and described spring (33) top press fit.
5. according to a kind of vehicle speed mileage sensor described in claim 1 ~ 4 any one, it is characterized in that: described bearing (5) is rolling bearing, the inner ring of this rolling bearing is fixed on fixed leg (2), outer ring is fixed on transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076709.5U CN203704947U (en) | 2014-02-24 | 2014-02-24 | Vehicle speed and mileage sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076709.5U CN203704947U (en) | 2014-02-24 | 2014-02-24 | Vehicle speed and mileage sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704947U true CN203704947U (en) | 2014-07-09 |
Family
ID=51055371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420076709.5U Expired - Lifetime CN203704947U (en) | 2014-02-24 | 2014-02-24 | Vehicle speed and mileage sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203704947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866462A (en) * | 2016-03-25 | 2016-08-17 | 航天科技控股集团股份有限公司 | Vehicle speed sensor in flexible connection with gearbox |
-
2014
- 2014-02-24 CN CN201420076709.5U patent/CN203704947U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866462A (en) * | 2016-03-25 | 2016-08-17 | 航天科技控股集团股份有限公司 | Vehicle speed sensor in flexible connection with gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210046 No. 23, Heng Jing Road, Nanjing economic and Technological Development Zone, Jiangsu, China Patentee after: NANJING SHUANGHUAN ELECTRIC APPLIANCE Co.,Ltd. Address before: 210046 No. 23, Heng Jing Road, Nanjing economic and Technological Development Zone, Jiangsu, China Patentee before: NANJING SHUANGHUAN ELECTRIC APPLIANCE CO.,LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vehicle speed and mileage sensor Effective date of registration: 20170919 Granted publication date: 20140709 Pledgee: Bank of Nanjing, Zhujiang branch, Limited by Share Ltd. Pledgor: NANJING SHUANGHUAN ELECTRIC APPLIANCE Co.,Ltd. Registration number: 2017990000884 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |