CN204788763U - Take steering wheel angle signal's torque sensor - Google Patents
Take steering wheel angle signal's torque sensor Download PDFInfo
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- CN204788763U CN204788763U CN201520435421.7U CN201520435421U CN204788763U CN 204788763 U CN204788763 U CN 204788763U CN 201520435421 U CN201520435421 U CN 201520435421U CN 204788763 U CN204788763 U CN 204788763U
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Abstract
The utility model provides a take steering wheel angle signal's torque sensor, it includes shell and upper cover plate, and the upper cover lid is on the shell, and the centre of shell is equipped with the through -hole that supplies the input shaft to pass, and the centre of upper cover plate is equipped with the through -hole that supplies the output shaft to pass, the shell is inside to be equipped with the torque measurement module, and the torque measurement module is connected with input shaft, output shaft, the shell still is equipped with outer apron on keeping away from the outer terminal surface of upper cover plate, is equipped with angle measured module between outer apron, the shell. This take steering wheel angle signal's torque sensor has realized the separation of moment of torsion and angle, not only can independent measurement moment of torsion signal but also can simultaneous measurement moment of torsion signal and angle signal, and the reliability is high, and stability is stronger.
Description
Technical field
The utility model relates to a kind of torque sensor with steering wheel angle signal.
Background technology
Steering is one of major subsystems of automobile; its performance is directly connected to control stability and the comfortableness of automobile, for guaranteeing traffic safety, reduces traffic hazard; the personal safety of protection driver, and the condition of work etc. improving driver plays vital effect.
Electric boosting steering system (ElectricPowerSteering, abbreviation EPS) be the power steering system that a kind of direct dependence motor provides auxiliary torque, can significantly improve automobile dynamic performance and static properties, improve comfortableness and the security of driver in travelling, reduce the pollution of environment.Therefore, this system is subject to the attention of many large motor corporations, and has become the main flow of automobile steering system.
Along with developing rapidly of domestic and international electric boosting steering system (EPS), the performance requirement wherein as the critical component-torque sensor providing power steering is also more and more higher.Simultaneously in order to protect the development of the intelligent driving technology such as the safety of driver and bearing circle self-aligning, automatic parking, the angular transducer that can carry out measurement of angle also must be increased.So need mounting torque sensor and angular transducer simultaneously on EPS, this just gives the structural design of steering gear and installs and brings certain difficulty, and also increases to some extent on cost.
Existing non-contacting sensor has much different principles, as photoelectricity, electromagnetic induction, Hall effect etc., but also do not have aly the angle signal of wide range (± 900 °) and the non-contacting sensor of torque signal to be detected, therefore; simultaneously design a kind of wide range can be detected angle and the sensor that is combined as a whole of moment of torsion, the integrated of sensor can be improved, and can be cost-saving, there is very strong practical value.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of torque sensor with steering wheel angle signal, does not have a problem that the angle signal of wide range and the non-contacting sensor of torque signal simultaneously can be detected for solving in prior art.
For achieving the above object and other relevant objects, the utility model provides a kind of torque sensor with steering wheel angle signal, it comprises shell and upper cover plate, upper cover plate covers on shell, the centre of shell is provided with the through hole passed for input shaft, and the centre of upper cover plate is provided with the through hole passed for output shaft; Enclosure is provided with torque measurement module, and torque measurement module is connected with input shaft, output shaft.
Preferably, torque measurement module comprises the conducting rotor of fixed cover on input shaft and the moment of torsion rotor of fixed cover on output shaft, conducting rotor cover is provided with moment of torsion circuit board to the one side of moment of torsion rotor, moment of torsion circuit boards has one section of resistive layer radially extended, moment of torsion rotor is provided with moment of torsion brush towards the one side of conducting rotor, and moment of torsion brush contacts with the resistive layer of moment of torsion circuit board.Further preferably, torque measurement module also comprises turning circuit plate, turning circuit plate and shell are fixed by rivet hot, turning circuit plate is coated with one deck conductive layer towards the one side of conducting rotor, conducting rotor cover is provided with conducting brush to the one side of turning circuit plate, and conducting brush contacts with the conductive layer of turning circuit plate.
Preferably, shell is also provided with outer cover plate away from the outer face of upper cover plate, is provided with Angle Measurement Module between outer cover plate, shell.
Further preferably, Angle Measurement Module comprises the gear wheel of fixed cover on input shaft and the second pinion wheel engaged with gear wheel, second pinion wheel is fixedly connected with eccentric element, eccentric element is enclosed within the first pinion wheel, first pinion wheel is rotated about axis on eccentric element, first pinion wheel engages with annular wheel, annular wheel is positioned on outer cover plate, first pinion wheel is fixedly equipped with the first magnet steel, first magnet steel is along the Axis Extension of the first pinion wheel, first Hall element is by the change of the magnetic flux on detection first magnet steel, measure the anglec of rotation of the first pinion wheel.Further preferred, few one of the number of teeth of gear ratio second pinion wheel of the first pinion wheel, the axis of the first pinion wheel and the axis of the second pinion wheel are provided with the offset of 1mm, and the first pinion wheel is X-gear; Few two of the number of teeth of interior gear ratio second pinion wheel of annular wheel.
Another kind is further preferred, gear wheel also engages with third pinion, and third pinion is fixedly equipped with the second magnet steel, and the second magnet steel is along the Axis Extension of third pinion, second Hall element, by the change of the magnetic flux on detection second magnet steel, measures the anglec of rotation of third pinion.Further preferred, Angle Measurement Module also comprises angle circuit board, and angle circuit board is fixedly mounted on connector, and connector is connected with shell, and the second Hall element is welded on angle circuit board.
Further preferably, Angle Measurement Module also comprises angle circuit board, and angle circuit board is fixed on connector, and connector is connected with shell, and the first Hall element is welded on angle circuit board.
The utility model utilizes potentiometer principle to realize the measurement of torque signal, and torque signal realizes the output of torque signal by the ratio changing resistance in place in circuit; Utilize hall principle to realize the measurement of angle signal, the measurement of angle signal utilizes small teeth number difference planet gear mechanism to increase ratio of gear, thus realize the transmission of wide range angle signal, and on this basis, utilize Hall element to experience to be contained in the flux change amount of the magnet steel on follower gear, and this value is converted to voltage (PWM) signal deliver to associative processor and process, namely can obtain angle signal, then carry out corresponding algorithm control in the controller angle signal obtained and torque signal being sent into vehicle electric motor power-assisted steering device.
As mentioned above, the torque sensor of the utility model band steering wheel angle signal, has following beneficial effect:
The torque sensor of this band steering wheel angle signal, achieves being separated of moment of torsion and angle, not only can independent measurement torque signal but also can simultaneously measure torque signal and angle signal, and reliability is high, and stability is stronger.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the torque measurement module of the torque sensor of the utility model band steering wheel angle signal.
Fig. 2 is shown as the structural representation of the Angle Measurement Module of the torque sensor of the utility model band steering wheel angle signal.
Fig. 3 is shown as the assembling schematic diagram of the Angle Measurement Module of the torque sensor of the band steering wheel angle signal shown in Fig. 2.
Fig. 4 is shown as the gears meshing schematic diagram of the Angle Measurement Module of the torque sensor of the band steering wheel angle signal shown in Fig. 2.
Fig. 5 is shown as the gears meshing schematic diagram of the Angle Measurement Module of the torque sensor of the band steering wheel angle signal shown in Fig. 2.
Fig. 6 is shown as the one-piece construction schematic diagram of the torque sensor of the utility model band steering wheel angle signal.
Element numbers explanation
1 upper cover plate
2 moment of torsion rotors
3 moment of torsion circuit boards
4 moment of torsion brushes
5 conducting rotors
6 conducting pins
7 turning circuit plates
8 conducting brushes
9 shells
10 outer cover plates
11 first pinion wheels
12 second pinion wheels
13 first magnet steel
14 gear wheels
15 third pinions
16 second magnet steel
17 angle circuit boards
18 connector inserts
19 connectors
20 eccentric elements
21 annular wheels
22 input shafts
Embodiment
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 6.Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop in scope that technology contents that the utility model discloses can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As Fig. 1 shows, the utility model provides a kind of torque sensor with steering wheel angle signal, and it comprises shell 9 and upper cover plate 1, and upper cover plate 1 covers on shell 9, the centre of shell 9 is provided with the through hole passed for input shaft, and the centre of upper cover plate 1 is provided with the through hole passed for output shaft; Shell 9 inside is provided with torque measurement module, and torque measurement module is connected with input shaft, output shaft; Shell 9 is also provided with outer cover plate 10 away from the outer face of upper cover plate 1, is provided with Angle Measurement Module between outer cover plate 10, shell 9.
The torque sensor of this band steering wheel angle signal can detect wide range (± 900 °) angle signal and torque signal simultaneously, with overcome prior art exist defect and cost-saving.Wherein torque measurement module and Angle Measurement Module separate, if without detection angles signal, can directly Angle Measurement Module remove or do not assemble when dispatching from the factory, torque measurement module still can normally use.
As shown in Figure 1, torque measurement module comprises the conducting rotor 5 of fixed cover on input shaft and the moment of torsion rotor 2 of fixed cover on output shaft, conducting rotor 5 is inlaid with moment of torsion circuit board 3 towards the one side of moment of torsion rotor 2, moment of torsion circuit board 3 is printed with one section of resistive layer radially extended, moment of torsion rotor 2 is provided with moment of torsion brush 4 towards the one side of conducting rotor 5, and moment of torsion brush 4 contacts with the resistive layer of moment of torsion circuit board 3; Torque measurement module also comprises turning circuit plate 7, turning circuit plate 7 and shell 9 are fixed by rivet hot, turning circuit plate 7 is coated with one deck conductive layer towards the one side of conducting rotor 5, conducting rotor 5 is provided with conducting brush 8 towards the one side of turning circuit plate 7, and conducting brush 8 contacts with the conductive layer of turning circuit plate 7.Turning circuit plate 7 is also provided with conducting pin 6, for connecting with main circuit.
When input shaft band dynamic torque circuit board 3 rotates, moment of torsion rotor 2 is along with output shaft rotation, when external torque changes, the moment of torsion brush 4 of moment of torsion rotor 2 also can change with the position of the contact point of the resistive layer of moment of torsion circuit board 3, thus change the ratio of resistance in place in circuit, achieve the object that output end voltage changes with the change of external torque size.
As shown in Figures 2 to 5, Angle Measurement Module comprises the gear wheel 14 of fixed cover on input shaft 22 and the second pinion wheel 12 engaged with gear wheel 14, second pinion wheel 12 is fixedly connected with eccentric element 20, eccentric element 20 is enclosed within the first pinion wheel 11, first pinion wheel 11 is rotated about axis on eccentric element 20, first pinion wheel 11 engages with annular wheel 21, annular wheel 21 is positioned on outer cover plate 10, the first magnet steel 13 first pinion wheel 11 is fixedly equipped with, first magnet steel 13 is along the Axis Extension of the first pinion wheel 11, the first Hall element on angle circuit board 17 is by the change of the magnetic flux on detection first magnet steel 13, measure the anglec of rotation of the first pinion wheel 11.
The measurement realizing wide range (± 900 °) angle signal is that the small teeth number difference planet gear mechanism consisted of the second pinion wheel 12, first pinion wheel 11 and annular wheel 21 has come, wherein input shaft 22 is connected with vehicle steering, realize the rotation of ± 900 °, the ratio of gear i < 1 of gear wheel 14 and the second pinion wheel 12, second pinion wheel 12, first pinion wheel 11 and annular wheel 21 form small teeth number difference planet gear mechanism, this mechanism by adjustment eccentric throw and the number of teeth poor, the very big change of ratio of gear can be realized, generally can reach 5 ~ 100.For realizing the measurement of angle of ± 900 °, specifically arrange as follows, few one of the number of teeth of gear ratio second pinion wheel 12 of the first pinion wheel 11, and the first pinion wheel is X-gear, the axis of the first pinion wheel 11 and the axis of the second pinion wheel 12 are provided with the offset of 1mm; Few two of the number of teeth of interior gear ratio second pinion wheel 12 of annular wheel 21, can obtain overall ratio is like this i=5.
Like this when input shaft 22 realize ± 900 ° rotate time, first pinion wheel 11 rotates ± 180 °, and by the first magnet steel 13 and the first Hall element be welded on angle circuit board 17, accurately can record the anglec of rotation of the first pinion wheel 11, again by the anglec of rotation of the first pinion wheel 11, the anglec of rotation of input shaft 22 can be calculated.Like this, the measurement of angle of ± 900 ° just can be carried out to input shaft 22.
Gear wheel 14 also engages with third pinion 15, the second magnet steel 16 third pinion 15 is fixedly equipped with, second magnet steel 16 is along the Axis Extension of third pinion 15, the second Hall element on angle circuit board 17, by the change of the magnetic flux on detection second magnet steel 16, measures the anglec of rotation of third pinion 15.The anglec of rotation of the third pinion 15 that the second Hall element records is for the anglec of rotation of aided solving input shaft 22.
Angle Measurement Module also comprises angle circuit board 17, and angle circuit board 17 is fixed on connector 19, and connector 19 is connected with shell 9, and the first Hall element, the second Hall element are positioned on angle circuit board 17.Angle circuit board 17 is provided with connector inserts 18, and angle circuit board 17 is fixedly connected with connector 19 by connector inserts 18.
Angle Measurement Module is connected on housing 9 by connector 19, and the first Hall element, the second Hall element are welded on angle circuit board 17.The change of the magnetic flux of the second magnet steel 16 on the third pinion 15 that the change of the magnetic flux of the first magnet steel 13 on the first pinion wheel 11 utilizing the first Hall element to detect, the second Hall element detect, and these two values are converted to voltage (PWM) signal deliver to associative processor and process, thus obtain angle signal, then carry out corresponding algorithm control in the controller angle obtained and torque signal being sent into vehicle electric motor power-assisted steering device.
The utility model utilizes potentiometer principle to realize the measurement of torque signal, and torque signal realizes the output of torque signal by the ratio changing resistance in place in circuit; Utilize hall principle to realize the measurement of angle signal, the measurement of angle signal utilizes small teeth number difference planet gear mechanism to increase ratio of gear, thus realize the transmission of wide range angle signal, and on this basis, utilize Hall element to experience to be contained in the flux change amount of the magnet steel on follower gear, and this value is converted to voltage (PWM) signal deliver to associative processor and process, namely can obtain angle signal, then carry out corresponding algorithm control in the controller angle signal obtained and torque signal being sent into vehicle electric motor power-assisted steering device.
The utility model is arranged on the appropriate section position of EPS machinery assembly in use, gear wheel 14 is fixed on input shaft 22, torque measurement module is utilized to detect torque signal, and sensed the change of the magnetic flux of the magnet steel on the first pinion wheel 11, third pinion 15 by the Hall element in Angle Measurement Module, thus obtain the angle position of bearing circle.
In sum, the torque sensor of the utility model band steering wheel angle signal, achieves being separated of moment of torsion and angle, not only can independent measurement torque signal but also can simultaneously measure torque signal and angle signal, and reliability is high, and stability is stronger.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (9)
1. the torque sensor with steering wheel angle signal, it is characterized in that: it comprises shell (9) and upper cover plate (1), described upper cover plate (1) covers on described shell (9), the centre of described shell (9) is provided with the through hole passed for input shaft, and the centre of described upper cover plate (1) is provided with the through hole passed for output shaft; Described shell (9) inside is provided with torque measurement module, and described torque measurement module is connected with input shaft, output shaft.
2. the torque sensor of band steering wheel angle signal according to claim 1, it is characterized in that: described torque measurement module comprises the conducting rotor (5) of fixed cover on described input shaft and the moment of torsion rotor (2) of fixed cover on described output shaft, described conducting rotor (5) is printed with moment of torsion circuit board (3) towards the one side of described moment of torsion rotor (2), described moment of torsion circuit board (3) is provided with one section of resistive layer radially extended, described moment of torsion rotor (2) is provided with moment of torsion brush (4) towards the one side of conducting rotor (5), described moment of torsion brush (4) contacts with the resistive layer of described moment of torsion circuit board (3).
3. the torque sensor of band steering wheel angle signal according to claim 2, it is characterized in that: described torque measurement module also comprises turning circuit plate (7), described turning circuit plate (7) is fixed with described shell (9), described turning circuit plate (7) is coated with one deck conductive layer towards the one side of described conducting rotor (5), described conducting rotor (5) is inlaid with conducting brush (8) towards the one side of described turning circuit plate (7), and described conducting brush (8) contacts with the conductive layer of described turning circuit plate (7).
4. the torque sensor of band steering wheel angle signal according to claim 1, it is characterized in that: described shell (9) is also provided with outer cover plate (10) away from the outer face of upper cover plate (1), described outer cover plate (10), shell are provided with Angle Measurement Module between (9).
5. the torque sensor of band steering wheel angle signal according to claim 4, it is characterized in that: described Angle Measurement Module comprises the gear wheel (14) of fixed cover on described input shaft (22) and the second pinion wheel (12) engaged with described gear wheel (14), described second pinion wheel (12) is fixedly connected with eccentric element (20), described eccentric element (20) is enclosed within the first pinion wheel (11), described first pinion wheel (11) is rotated about axis on described eccentric element (20), described first pinion wheel (11) is engaged with annular wheel (21), described annular wheel (21) is positioned on described outer cover plate (10), described first pinion wheel (11) is upper is fixedly equipped with the first magnet steel (13), described first magnet steel (13) is along the Axis Extension of described first pinion wheel (11), first Hall element is by the change of the magnetic flux on detection first magnet steel (13), measure the anglec of rotation of the first pinion wheel (11).
6. the torque sensor of band steering wheel angle signal according to claim 5, it is characterized in that: few one of the number of teeth of gear ratio second pinion wheel (12) of described first pinion wheel (11), first pinion wheel (11) is X-gear, and the axis of the first pinion wheel (11) and the axis of the second pinion wheel (12) are provided with the offset of 1mm; Few two of the number of teeth of interior gear ratio second pinion wheel (12) of described annular wheel (21).
7. the torque sensor of band steering wheel angle signal according to claim 5, it is characterized in that: described gear wheel (14) also engages with third pinion (15), described third pinion (15) is upper is fixedly equipped with the second magnet steel (16), described second magnet steel (16) is along the Axis Extension of described third pinion (15), second Hall element, by the change of the magnetic flux on detection second magnet steel (16), measures the anglec of rotation of third pinion (15).
8. the torque sensor of band steering wheel angle signal according to claim 7, it is characterized in that: described Angle Measurement Module also comprises angle circuit board (17), described angle circuit board (17) is fixedly mounted on connector (19), described connector (19) is connected with shell (9), and described second Hall element is welded on described angle circuit board (17).
9. the torque sensor of band steering wheel angle signal according to claim 5, it is characterized in that: described Angle Measurement Module also comprises angle circuit board (17), described angle circuit board (17) is fixedly mounted on connector (19), described connector (19) is connected with shell (9), and described first Hall element is welded on described angle circuit board (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435421.7U CN204788763U (en) | 2015-06-23 | 2015-06-23 | Take steering wheel angle signal's torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435421.7U CN204788763U (en) | 2015-06-23 | 2015-06-23 | Take steering wheel angle signal's torque sensor |
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| Publication Number | Publication Date |
|---|---|
| CN204788763U true CN204788763U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520435421.7U Active CN204788763U (en) | 2015-06-23 | 2015-06-23 | Take steering wheel angle signal's torque sensor |
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| Country | Link |
|---|---|
| CN (1) | CN204788763U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562224A (en) * | 2018-04-20 | 2018-09-21 | 张博熙 | Automobile intelligent steering torque and angular transducer |
| CN109406138A (en) * | 2018-12-18 | 2019-03-01 | 合肥森曼智能科技有限公司 | A kind of survey starting torque and determine torque measuring angle of revolution mechanism |
| CN109668507A (en) * | 2017-10-13 | 2019-04-23 | 株式会社捷太格特 | Sensor device |
| CN109708788A (en) * | 2018-12-29 | 2019-05-03 | 上海精传电子科技有限公司 | A kind of induction torque angle sensor structure |
| CN112212780A (en) * | 2019-07-09 | 2021-01-12 | 株式会社捷太格特 | Sensor device |
-
2015
- 2015-06-23 CN CN201520435421.7U patent/CN204788763U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668507A (en) * | 2017-10-13 | 2019-04-23 | 株式会社捷太格特 | Sensor device |
| CN109668507B (en) * | 2017-10-13 | 2022-07-19 | 株式会社捷太格特 | Sensor device |
| CN108562224A (en) * | 2018-04-20 | 2018-09-21 | 张博熙 | Automobile intelligent steering torque and angular transducer |
| CN109406138A (en) * | 2018-12-18 | 2019-03-01 | 合肥森曼智能科技有限公司 | A kind of survey starting torque and determine torque measuring angle of revolution mechanism |
| CN109406138B (en) * | 2018-12-18 | 2021-06-29 | 合肥森曼智能科技有限公司 | Mechanism for measuring starting torque and determining torque and rotation angle |
| CN109708788A (en) * | 2018-12-29 | 2019-05-03 | 上海精传电子科技有限公司 | A kind of induction torque angle sensor structure |
| CN109708788B (en) * | 2018-12-29 | 2024-04-09 | 上海精传电子科技有限公司 | Electromagnetic induction type torque rotation angle sensor structure |
| CN112212780A (en) * | 2019-07-09 | 2021-01-12 | 株式会社捷太格特 | Sensor device |
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