CN202304745U - Corner torque sensor - Google Patents
Corner torque sensor Download PDFInfo
- Publication number
- CN202304745U CN202304745U CN2011203690513U CN201120369051U CN202304745U CN 202304745 U CN202304745 U CN 202304745U CN 2011203690513 U CN2011203690513 U CN 2011203690513U CN 201120369051 U CN201120369051 U CN 201120369051U CN 202304745 U CN202304745 U CN 202304745U
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- Prior art keywords
- shell
- torque sensor
- sheathed
- fixed
- rotary transformer
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Abstract
Provided is a corner torque sensor, comprising a first housing, an output shaft, an input shaft sleeved on one end of the output shaft, a first toroidal transformer and a first rotary transformer successively sleeved on the input shaft and located in the first housing, a second toroidal transformer and a second rotary transformer successively sleeved on the output shaft and located in the first housing, a second housing fixed on an outer end part of the first housing, a driving wheel sleeved on one end of the output shaft and a driven wheel engaged with the driving wheel and fixed on the second housing; the axial direction of the driven wheel is provided with a magnetic element. A torque can be calculated through the two toroidal transformers and two rotary transformers, and an absolute corner can be easily calculated through the driving wheel and the driven wheel, in such a way that turning information can be obtained through the torque and the absolute corner.
Description
Technical field
The utility model relates to torque sensor used in the power steering system of vehicle, is specifically related to a kind of corner torque sensor.
Background technology
Electric boosting steering system on the automobile (EPS) generally comprises bearing circle, turns round sensor, electric control unit and assisted electric machine.Electric booster system need convert the torque of bearing circle into electric signal, sends ECU to, and ECU produces suitable current, drives assist motor and produces suitable power-assisted, accomplishes power-assisted steering.Electric boosting steering system is a kind of motor that is arranged on automobile steering system that has, thereby so that through using ECU to control the system that the power that provides to motor alleviates pilot control work.
EPS is a typical motor servo system.In EPS; During motor turning; Torque sensor detects the moment and the rotation direction of steering wheel; To ECU, ECU sends signal instruction according to the data such as rotating torque, rotation direction and car speed of steering wheel to motor controller with these signal conveys, makes rotating torque that motor exports corresponding size and direction to produce power-assist power.The major part of the steering angle of direction of measurement dish adopts torque sensor in the existing prior art, can not the concrete steering angle of direction of measurement dish.Even the device of measuring corner and moment of torsion is arranged, also be independent respectively the completion.
The utility model content
The utility model is for solving in the prior art problem of can not the direction of measurement dish concrete steering angle, thereby the stable corner torque sensor of absolute value of a kind of not only energy measurement moment of torsion but also energy measurement steering axle steering angle is provided.
For solving the problems of the technologies described above, the utility model provides following technical scheme:
A kind of corner torque sensor; Comprise: first shell; Output shaft; Be sheathed on the input shaft of output shaft one end, be sheathed on the input shaft successively and be positioned at first toroidal transformer and first rotary transformer of first shell, be sheathed on the output shaft successively and be positioned at second toroidal transformer and second rotary transformer of first shell; Be fixed in second shell of the first shell outer end, be sheathed on the driving wheel of output shaft one end, and with driving wheel engagement and be fixed on the engaged wheel on second shell, the axis direction of said engaged wheel is provided with magnetic element.
Further, said magnetic element comprises magnet.
Further, said sensor also comprises the signal box that is used for processing signals.
Further, the signal of the signal of said first rotary transformer and second rotary transformer is the sine and cosine relation.
Further, said sensor also comprises the magnetic shield that is arranged between said toroidal transformer and the rotary transformer.
Further, the number of teeth of said driving wheel is 50, and the number of teeth of said engaged wheel is 17.
Further, said first toroidal transformer comprises the first rotor that is sheathed on the input shaft and fixes with it and is fixed on first stator on first shell.
Further, said first rotary transformer comprises second rotor that is sheathed on the input shaft and fixes with it and is fixed on second stator on first shell.
Further, said second toroidal transformer comprises the third trochanter that is sheathed on the input shaft and fixes with it and is fixed on the 3rd stator on first shell.
Further, said second rotary transformer comprises the fourth trochanter that is sheathed on the input shaft and fixes with it and is fixed on the 4th stator on first shell.
Compared with prior art, the utlity model has following beneficial effect: a kind of corner torque sensor that the utility model provides through two toroidal transformers and two rotary transformers, can calculate moment of torsion; Can be easy to calculate absolute corner through driving wheel and engaged wheel, can draw direction information according to moment of torsion and absolute corner like this.
Description of drawings
Fig. 1 is the utility model embodiment corner torque sensor synoptic diagram.
Fig. 2 is the utility model embodiment driving wheel and driven wheel structure synoptic diagram.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 is the utility model embodiment corner torque sensor synoptic diagram; A kind of corner torque sensor is disclosed; Comprise: first shell 20; Output shaft 2; Be sheathed on the input shaft 1 of output shaft 2 one ends, be sheathed on the input shaft 1 successively and be positioned at first toroidal transformer 157 and first rotary transformer 168 of first shell 20, be sheathed on the output shaft 2 successively and be positioned at second toroidal transformer 257 and second rotary transformer 268 of first shell 20; Be fixed in second shell 12 of first shell, 2 outer ends, be sheathed on the driving wheel 11 of output shaft 2 one ends, and with driving wheel 11 engagement and be fixed on the engaged wheel 10 on second shell 12, the axis direction of said engaged wheel 10 is provided with magnetic element 9.。The utility model can calculate moment of torsion through two toroidal transformers and two rotary transformers; Can be easy to calculate absolute corner through driving wheel and engaged wheel, can draw direction information according to moment of torsion and absolute corner like this.
First toroidal transformer 157 in the present embodiment comprises the first rotor 5a that is sheathed on the input shaft 1 and fixes with it and is fixed on the first stator 7a on first shell 20; First rotary transformer 168 comprises the second rotor 6a that is sheathed on the input shaft 1 and fixes with it and is fixed on the second stator 8a on first shell 20; Second toroidal transformer 257 comprises the third trochanter 5b that is sheathed on the input shaft 1 and fixes with it and is fixed on the 3rd stator 7b on first shell 20; Second rotary transformer 257 comprises the fourth trochanter 6b that is sheathed on the input shaft 1 and fixes with it and is fixed on the 4th stator 8b on first shell 20.The stator 7a of two toroidal transformers and 7b are the input winding; Be the driving voltage input end; Through the electromagnetic induction effect voltage signal is delivered to respectively on the rotor 5b of rotor 5a and second toroidal transformer of first toroidal transformer; The rotor 5a of first toroidal transformer and the rotor winding 6a and the 6b of first rotary transformer couple together, and the rotor winding 6b of the rotor 6a of second toroidal transformer and second rotary transformer couples together; The stator winding 8a of first rotary transformer and the stator winding 8b of second rotary transformer are voltage signal output end, and according to the principle of rotary transformer, the signal of the signal of first rotary transformer 168 and second rotary transformer 268 is the sine and cosine relation.In the present embodiment; Also comprise the signal box 3 that is fixed on first shell and is used for processing signals; Signal box 3 can be done further processing to signal; According to the voltage signal of input shaft 1 signal output part output and the voltage signal of output shaft 2 signal output parts output, can draw the torsion angle of input shaft 1 and the torsion angle of output shaft 2 respectively, thereby calculate the relative rotation that two between centers are proportional to the steering axle moment of torsion.
For convenience of calculation, be contained on the input shaft, structure, the winding of the toroidal transformer on the output shaft and rotary transformer be identical.Among some embodiment; The coil turn of rotor winding and stator winding that toroidal transformer also can be set is proportional; The coil turn of rotary transformer rotor winding becomes sinusoidal rule to change, and the rotary transformer stator carries out twice coiling, and coil turn is just becoming respectively, the cosine rule changes.In order to prevent the interference between magnetic field, be provided with magnetic shield 30 between first toroidal transformer 157 and first rotary transformer 168 and between second toroidal transformer 257 and second rotary transformer 268.
In the present embodiment, engaged wheel 10 can be fixed on second shell 12 through fixed mount 13, drops when preventing that engaged wheel 10 from rotating, and magnetic element 9 comprises magnet here, and magnet can rotate with engaged wheel 10.The number of teeth of driving wheel 11 is preferably 50 in the present embodiment, and the number of teeth of engaged wheel 10 is preferably 17.Fig. 2 is the utility model embodiment driving wheel and driven wheel structure synoptic diagram; Driving wheel 11 generally has three tooth engagements with engaged wheel 10; Driving wheel 11 closes with engaged wheel 10 and is called gear pair; In the end of first shell 20 and be positioned at second shell, 12 inside and also be provided with pcb board; Comprise the chip that has Hall element on this pcb board, can be used for measuring the corner size and Orientation of steering axle.Driving wheel 11 is fixed on the output shaft and rotates with axle; Engaged wheel 10 is taken turns and is contained on second shell 12; Magnet 9 has a pair of magnetic pole (N, the S utmost point), and the Hall element induced field on the chip changes, and draws the corner size and the rotation direction of engaged wheel 10; Calculate the corner size and the rotation direction of gear wheel, i.e. the corner size and the rotation direction of steering axle according to the ratio of gear (17/50) of gear pair.For the magnetic interference between the magnetic core of the magnetic core that prevents gear pair and rotary transformer, add magnetic shield 30 at the magnetic core of gear pair.
By above-mentioned visible, this corner torque sensor not only can be measured moment of torsion, can also measure the corner size and the rotation direction of steering axle, conveniently turns to.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. a corner torque sensor is characterized in that, comprising:
First shell;
Output shaft;
Be sheathed on the input shaft of output shaft one end;
Be sheathed on the input shaft successively and be positioned at first toroidal transformer and first rotary transformer of first shell;
Be sheathed on the output shaft successively and be positioned at second toroidal transformer and second rotary transformer of first shell;
Be fixed in second shell of the first shell outer end;
Be sheathed on the driving wheel of output shaft one end, and with driving wheel engagement and be fixed on the engaged wheel on second shell, the axis direction of said engaged wheel is provided with magnetic element.
2. corner torque sensor according to claim 1 is characterized in that said magnetic element comprises magnet.
3. corner torque sensor according to claim 1 is characterized in that, said sensor also comprises the signal box that is fixed on first shell and is used for processing signals.
4. corner torque sensor according to claim 1 is characterized in that, the signal of the signal of said first rotary transformer and second rotary transformer is the sine and cosine relation.
5. corner torque sensor according to claim 1 is characterized in that said sensor also comprises the magnetic shield that is arranged between said toroidal transformer and the rotary transformer.
6. corner torque sensor according to claim 1 is characterized in that, the number of teeth of said driving wheel is 50, and the number of teeth of said engaged wheel is 17.
7. corner torque sensor according to claim 1 is characterized in that, said first toroidal transformer comprises the first rotor that is sheathed on the input shaft and fixes with it and is fixed on first stator on first shell.
8. corner torque sensor according to claim 1 is characterized in that, said first rotary transformer comprises second rotor that is sheathed on the input shaft and fixes with it and is fixed on second stator on first shell.
9. corner torque sensor according to claim 1 is characterized in that, said second toroidal transformer comprises the third trochanter that is sheathed on the input shaft and fixes with it and is fixed on the 3rd stator on first shell.
10. corner torque sensor according to claim 1 is characterized in that, said second rotary transformer comprises the fourth trochanter that is sheathed on the input shaft and fixes with it and is fixed on the 4th stator on first shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203690513U CN202304745U (en) | 2011-09-30 | 2011-09-30 | Corner torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203690513U CN202304745U (en) | 2011-09-30 | 2011-09-30 | Corner torque sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304745U true CN202304745U (en) | 2012-07-04 |
Family
ID=46373625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203690513U Expired - Lifetime CN202304745U (en) | 2011-09-30 | 2011-09-30 | Corner torque sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304745U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253304A (en) * | 2013-06-04 | 2013-08-21 | 安徽安凯汽车股份有限公司 | Rotary transformer type steering angle sensor of electric automobile and detection method thereof |
| CN109000835A (en) * | 2018-09-19 | 2018-12-14 | 西安旭彤电子科技股份有限公司 | A kind of dynamic difference formula torque sensor |
| CN113167665A (en) * | 2018-12-11 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Magnetic shielding for a torque sensor of an electromechanical power steering system in a motor vehicle |
| CN113865764A (en) * | 2021-10-14 | 2021-12-31 | Abb瑞士股份有限公司 | Device, system and method for measuring torque |
-
2011
- 2011-09-30 CN CN2011203690513U patent/CN202304745U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253304A (en) * | 2013-06-04 | 2013-08-21 | 安徽安凯汽车股份有限公司 | Rotary transformer type steering angle sensor of electric automobile and detection method thereof |
| CN103253304B (en) * | 2013-06-04 | 2016-01-20 | 安徽安凯汽车股份有限公司 | A kind of method of inspection of Rotary transformer type steering angle sensor of electronlmobil |
| CN109000835A (en) * | 2018-09-19 | 2018-12-14 | 西安旭彤电子科技股份有限公司 | A kind of dynamic difference formula torque sensor |
| CN109000835B (en) * | 2018-09-19 | 2020-09-11 | 西安旭彤电子科技股份有限公司 | Dynamic differential torque sensor |
| CN113167665A (en) * | 2018-12-11 | 2021-07-23 | 蒂森克虏伯普利斯坦股份公司 | Magnetic shielding for a torque sensor of an electromechanical power steering system in a motor vehicle |
| CN113167665B (en) * | 2018-12-11 | 2023-08-29 | 蒂森克虏伯普利斯坦股份公司 | Torque sensor device and electromechanical steering system |
| CN113865764A (en) * | 2021-10-14 | 2021-12-31 | Abb瑞士股份有限公司 | Device, system and method for measuring torque |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191227 Address after: 518119 1 Yanan Road, Kwai Chung street, Dapeng New District, Shenzhen, Guangdong Patentee after: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address before: BYD 518118 Shenzhen Road, Guangdong province Pingshan New District No. 3009 Patentee before: BYD Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: BYD Semiconductor Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |