CN204186982U - The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles - Google Patents
The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles Download PDFInfo
- Publication number
- CN204186982U CN204186982U CN201420530673.3U CN201420530673U CN204186982U CN 204186982 U CN204186982 U CN 204186982U CN 201420530673 U CN201420530673 U CN 201420530673U CN 204186982 U CN204186982 U CN 204186982U
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- piezoelectric transducer
- gear
- pure electric
- sensor stand
- camshaft
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Abstract
The utility model relates to the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles.Comprise sensor stand, it is fixed with respectively bottom gear piezoelectric transducer, top gear piezoelectric transducer and neutral piezoelectric transducer, the centre of sensor stand is provided with cam by camshaft; When cam turns to bottom gear piezoelectric transducer or top gear piezoelectric transducer or neutral piezoelectric transducer place, respectively pressure is applied to corresponding person, produce output signal.During use, sensor stand is fixed on the vehicle body of pure electric automobile by middle casing, the splined end of camshaft is fixedly connected with the gear shift operation bar on pure electric automobile, when performing gear shift operation, gear shift operation bar drives cam axle, and cam and bottom gear piezoelectric transducer or top gear piezoelectric transducer or neutral piezoelectric transducer are contacted.The utility model adopts piezoelectric transducer be used for measuring force and can be transformed to the non-electrical physical quantity of power, has Bandwidth, the advantage that anti-interference, highly sensitive, signal to noise ratio is high.
Description
Technical field
The utility model belongs to automobile shift sensor field, is specifically related to the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles.
Background technique
Because pure electric automobile has extraordinary future prospect, so the technical development of pure electric automobile is very rapid.The gearbox that pure electric automobile uses is automatic transmission case mostly, and for now, three gear pure electric automobiles are commercially more general, are respectively top gear, bottom gear and neutral.Shift sensor is mounted in for detecting the gear of vehicle in automatic transmission case, and the performance requirements such as the sensitivity of sensor and reliability are more and more higher.Existing shift sensor is mainly divided into contact-type and contactless two large classes, the shift sensor of contact-type detects touch sensor for typical case with elastic sliding vane multistage, this sensor mostly is elastic conducting fluid element and multistage water conservancy diversion rail composition, the shortcoming of this sensor takes up room greatly, mechanical transmission institute transmission error is large, makes to detect possibility inaccurate.Contactless shift sensor many employings linear Hall realizes, and this sensor, by gathering the stroke of gear, is converted by displacement detecting and changes out selected gear, there is larger error, and the response time is longer.
Model utility content
In order to the response improving gearshift is rapid, ensure gearshift precision, the utility model provides a kind of piezoelectricity type shift sensing apparatus of three gear pure electric automobiles.
The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles comprises sensor stand 9, sensor stand 9 is laid with bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4 and neutral piezoelectric transducer 8, the centre of sensor stand 9 is provided with cam 5 by camshaft; When cam 5 turns to bottom gear piezoelectric transducer 3 or top gear piezoelectric transducer 4 or neutral piezoelectric transducer 8 place, respectively pressure is applied to three, produce output signal; One end of described camshaft is splined shaft, during use, sensor stand 9 is fixed at the gear shift operation bar bottom position of pure electric automobile by middle casing 2, the splined end of camshaft is fixedly connected with the gear shift operation bar 10 on pure electric automobile, when driver performs gear shift operation, gear shift operation bar 10 drives camshaft 6 to rotate, and cam 5 and bottom gear piezoelectric transducer 3 or top gear piezoelectric transducer 4 or neutral piezoelectric transducer 8 are contacted.
Described middle casing 2 is ring-type, its excircle is laid with the mounting blocks that three have mounting hole; Axis one side of described middle casing 2 is provided with bonnet 1, the centre of described bonnet 1 offers axis hole, three that bonnet 1 are laid with through bonnet are drawn pin, and three are drawn pin and are connected to bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4 and neutral piezoelectric transducer 8 respectively by wire correspondence; The axial another side of middle casing 2 is provided with protecgulum 7, and the centre of described protecgulum 7 offers axis hole; The splined end of described camshaft extends the axis hole outside of protecgulum 7, the other end of camshaft and the dynamic cooperation of the axis hole of bonnet 1.
The material of described bonnet 1, middle casing 2 and protecgulum 7 is epoxy resin electrically insulating material, prevents from causing signal disturbing; The material of described sensor stand 9 is engineering plastics.
Compared with prior art, Advantageous Effects of the present utility model embodies in the following areas:
1. the utility model adopts piezoelectric transducer, and piezoelectric transducer is used for measuring force and can be transformed to the non-electrical physical quantity of power, and its advantage has Bandwidth, anti-interference, highly sensitive, signal to noise ratio is high;
2. the piezoelectric transducer that the utility model adopts has multiple spot programmable functions, has highly stable, signal output characteristics accurately;
3. the utility model is adopted to be rotated by cam and applies pressure to piezoelectric transducer, and such mechanical contact structure, ensure that good gearshift speed of response, and can avoid mechanical transmission error;
4. the utility model installation weight is light, structure simple, reliable operation.
Accompanying drawing explanation
Fig. 1 is three-dimensional exploded perspective view of the present utility model.
Fig. 2 is the structural representation that the utility model removes protecgulum, bonnet.
Fig. 3 is the structural representation that cam coordinates with piezoelectric transducer.
Fig. 4 is middle casing three-dimensional structure schematic diagram.
Sequence number in upper figure: bonnet 1, middle casing 2, bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4, cam 5, camshaft 6, protecgulum 7, neutral piezoelectric transducer 8, sensor stand 9, gear shift operation bar 10, draw pin 11.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
Embodiment
See Fig. 1, the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles comprises bonnet 1, middle casing 2, sensor stand 9, protecgulum 7, cam 5, bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4 and neutral piezoelectric transducer 8.
See Fig. 2 and Fig. 3, sensor stand 9 is triangular in shape, three sides are installed with bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4 and neutral piezoelectric transducer 8 respectively, and cam 5 is equipped with by camshaft 6 in the centre of sensor stand 9, and one end of camshaft 6 is splined shaft.
See Fig. 4 and Fig. 2, middle casing 2 is ring-type, its excircle is laid with the mounting blocks that three have mounting hole; The inner circumference of middle casing 2 is laid with three projections, three angles place of leg-of-mutton sensor stand 9 is fixture block shape, three angles place of sensor stand 9 respectively corresponding clip is held on three projections on middle casing 2 inner circumference, and is threaded connection part and is fixedly connected with.Bonnet 1 is fixedly mounted on an axially side of middle casing 2, the centre of bonnet 1 offers axis hole, three that bonnet 1 are laid with through bonnet are drawn pin 11, and three are drawn pin 11 and are connected to bottom gear piezoelectric transducer 3, top gear piezoelectric transducer 4 and neutral piezoelectric transducer 8 respectively by wire correspondence; Protecgulum 7 is fixedly mounted on the axial another side of middle casing 2, and the centre of protecgulum 7 offers axis hole; The splined end of camshaft 6 extends the axis hole outside of protecgulum 7, the other end of camshaft 6 and the dynamic cooperation of the axis hole of bonnet 1.
When cam 5 turns to bottom gear piezoelectric transducer 3 place or top gear piezoelectric transducer 4 place time or neutral piezoelectric transducer 8 place time, respectively pressure is applied to three, produce output signal.
During use, sensor stand 9 is fixed at the gear shift operation bar bottom position of pure electric automobile by middle casing 2, and the splined end of camshaft 6 is fixedly connected with the gear shift operation bar 10 on pure electric automobile.When driver performs gear shift operation, gear shift operation bar 10 drives camshaft 6 to rotate, and cam 5 and bottom gear piezoelectric transducer 3 or top gear piezoelectric transducer 4 or neutral piezoelectric transducer 8 are contacted.
The material of bonnet 1, middle casing 2 and protecgulum 7 is epoxy resin electrically insulating material, prevents from causing signal disturbing; The material of sensor stand 9 is engineering plastics.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1. the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles, it is characterized in that: comprise sensor stand (9), sensor stand (9) is laid with bottom gear piezoelectric transducer (3), top gear piezoelectric transducer (4) and neutral piezoelectric transducer (8), the centre of sensor stand (9) is provided with cam (5) by camshaft; When cam (5) turns to bottom gear piezoelectric transducer (3) or top gear piezoelectric transducer (4) or neutral piezoelectric transducer (8) place, respectively pressure is applied to three, produce output signal; One end of described camshaft is splined shaft, during use, sensor stand (9) is fixed at the gear shift operation bar bottom position of pure electric automobile by middle casing (2), the splined end of camshaft is fixedly connected with the gear shift operation bar (10) on pure electric automobile, when driver performs gear shift operation, gear shift operation bar (10) drives camshaft (6) to rotate, and cam (5) and bottom gear piezoelectric transducer (3) or top gear piezoelectric transducer (4) or neutral piezoelectric transducer (8) are contacted.
2. the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles according to claim 1, is characterized in that: described middle casing (2) is ring-type, its excircle is laid with the mounting blocks that three have mounting hole; Axis one side of described middle casing (2) is provided with bonnet (1), the centre of described bonnet (1) offers axis hole, three that bonnet (1) are laid with through bonnet are drawn pin, and three are drawn pin and are connected to bottom gear piezoelectric transducer (3), top gear piezoelectric transducer (4) and neutral piezoelectric transducer (8) respectively by wire correspondence; The axial another side of middle casing (2) is provided with protecgulum (7), and the centre of described protecgulum (7) offers axis hole; The splined end of described camshaft (6) extends the axis hole outside of protecgulum (7), the other end of camshaft (6) and the dynamic cooperation of the axis hole of bonnet (1).
3. the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles according to claim 1, it is characterized in that: the inner circumference of described middle casing (2) is laid with three projections, described sensor stand (9) is triangular in shape, three angles place of sensor stand (9) is fixture block shape, three angles place of sensor stand (9) respectively corresponding clip is held on three projections on middle casing (2) inner circumference, and is threaded connection part and is fixedly connected with.
4. the piezoelectricity type shift sensing apparatus of three gear pure electric automobiles according to claim 2, it is characterized in that: the material of described bonnet (1), middle casing (2) and protecgulum (7) is epoxy resin electrically insulating material, prevents from causing signal disturbing; The material of described sensor stand (9) is engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420530673.3U CN204186982U (en) | 2014-09-16 | 2014-09-16 | The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420530673.3U CN204186982U (en) | 2014-09-16 | 2014-09-16 | The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186982U true CN204186982U (en) | 2015-03-04 |
Family
ID=52618986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420530673.3U Withdrawn - After Issue CN204186982U (en) | 2014-09-16 | 2014-09-16 | The piezoelectricity type shift sensing apparatus of three gear pure electric automobiles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235357A (en) * | 2014-09-16 | 2014-12-24 | 合肥工业大学 | Piezoelectric gear sensor device for three-gear pure electric automobile |
-
2014
- 2014-09-16 CN CN201420530673.3U patent/CN204186982U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235357A (en) * | 2014-09-16 | 2014-12-24 | 合肥工业大学 | Piezoelectric gear sensor device for three-gear pure electric automobile |
| CN104235357B (en) * | 2014-09-16 | 2016-07-20 | 合肥工业大学 | The piezoelectric type gear position sensor device of third gear pure electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150304 Effective date of abandoning: 20160720 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |