CN201828370U - Automotive steering torque measurement device - Google Patents
Automotive steering torque measurement device Download PDFInfo
- Publication number
- CN201828370U CN201828370U CN2010205172622U CN201020517262U CN201828370U CN 201828370 U CN201828370 U CN 201828370U CN 2010205172622 U CN2010205172622 U CN 2010205172622U CN 201020517262 U CN201020517262 U CN 201020517262U CN 201828370 U CN201828370 U CN 201828370U
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- sliding sleeve
- output shaft
- input shaft
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Abstract
The utility model discloses an automotive steering torque measurement device, which comprises an input shaft, an output shaft and a printed circuit board (PCB); as an improvement of the device, a sliding sleeve which can axially move as the input shaft and the output shaft relatively rotate is arranged between the input shaft and the output shaft, and is provided with an N pole and two S poles (or an S pole and two N poles), which are annularly and staggerly distributed; the sliding sleeve is connected with two magnetism-conducting rings which are symmetric with the poles of the sliding sleeve, and Hall elements which detect the annular magnetic flux and are connected onto the printed circuit board (PCB) are arranged between the two magnetism-conducting rings. The utility model adopts the programmable Hall elements to detect the magnetic flux changing along with acting torque, and the variation of the magnetic flux is in proportion to the variation of torque. Compared with the prior art, the utility model has the advantages that: the device is applicable to an electric power-assisted steering system to detect the torque of a steering wheel, the structure is simple, the device is convenient to mount, moreover, the cost is low, the precision is high, and the device has a good prospect for application.
Description
Technical field
The utility model relates to the measurement mechanism and the measuring method thereof of motor turning moment of torsion, especially a kind of contactless torque measurement mechanism and measuring method.
Background technology
The steering-wheel torque sensor is the critical component in the electric boosting steering system, electric boosting steering system is controlled the electric current of assist motor with the output power-assisted according to the size of the size of steering-wheel torque sensor output signal and vehicle speed signal, so the quality of steering-wheel torque sensor quality directly influences the performance of electric boosting steering system.Advantages such as contactless steering-wheel torque sensor is because to have a volume little, and precision height, life-span are long have become the first-selection of electric power steering.Non-contact torque sensor can be divided into condenser type, electromagnetic type, inductance type, photo-electric or the like again.
Chinese patent 02116308.1 discloses a kind of photo-electric steering-wheel torque sensor, and this kind steering-wheel torque sensor construction is simple, but its lead is drawn inconvenience.Chinese patent L200610031787.3 discloses a kind of electromagnetic type steering-wheel torque sensor, and this kind steering-wheel torque sensor construction is also simpler, highly sensitive, but needs special signal to take place and treatment circuit, and signal is disturbed easily.
Summary of the invention
The purpose of this utility model is to provide a kind of precision height, easy to adjust, dependable performance, motor turning torque sensing device that cost is low, is used for the measurement of electric boosting steering system steering-wheel torque.
The technical scheme that the utility model solves existing issue is: a kind of motor turning torque-measuring apparatus, comprise input shaft, output shaft, PCB circuit board, as improvement of the present utility model, be provided with between described input shaft, the output shaft with input shaft and output shaft and relatively rotate and link and produce the sliding sleeve of axial displacement, sliding sleeve is provided with N, the S magnetic pole that ring-type is interspersed; Described sliding sleeve is socketed with two magnetic guiding loops with sliding sleeve magnetic pole symmetry, is provided with detection ring magnetic flux between described two magnetic guiding loops, is connected in the Hall element on the PCB circuit board.
As further improvement of the utility model, described sliding sleeve is connected between input shaft, the output shaft by helical guideway, relatively rotates and the generation axial displacement that links with input shaft and output shaft; Described magnetic guiding loop is fixedly connected by magnetic conduction ring set body.
As further improvement of the utility model, described guide rail also comprises the guided way that is arranged on input shaft or the output shaft; Described magnetic guiding loop one side is evenly equipped with trapezoidal flange; Described its material of magnetic conduction ring set is a resin.
As further improvement of the utility model, described Hall element is the programmable hall element.
As further improvement of the utility model, described sliding sleeve is provided with three staggered magnetic poles, and its magnetic pole is distributed as N, S, N or S, N, S.
The utility model is a kind of contactless steering-wheel torque sensor, the magnetic flux that adopts the programmable hall element testing to change with action torque, and the variable quantity of magnetic flux and change in torque amount are proportional.Its beneficial effect is to be applied to electric boosting steering system compared with prior art, detects steering-wheel torque, and is not only simple in structure, easy for installation, and cost is lower, precision is higher, has good application prospects.
Description of drawings
Said structure of the present utility model can be described further by drawings and Examples.
Fig. 1 be the utility model adopt steel ball to connect sliding sleeve on arrange the structural representation of three magnetic poles.
Fig. 2 is the structural drawing of sliding sleeve and magnetic guiding loop in Fig. 1 structure.
Fig. 3-the 5th, the location diagram of sliding sleeve and flux sleeve in Fig. 1 structure.
Fig. 6 is the graph of a relation of torque sensor output signal size of the present utility model and torsion bar distortion.
Fig. 7 be the utility model adopt steel ball to connect sliding sleeve on arrange the structural representation of two magnetic poles.
Fig. 8 is the stereographic map of magnetic guiding loop in Fig. 7 structure.
Fig. 9 is the structural drawing of sliding sleeve and magnetic guiding loop in Fig. 7 structure.
Figure 10-Figure 12 is the location diagram of sliding sleeve and flux sleeve in Fig. 7 structure.
Figure 13 be the utility model adopt double-pin to connect sliding sleeve on arrange the structural representation of three magnetic poles.
Figure 14 be the utility model adopt double-pin to connect sliding sleeve on arrange the structural representation of two magnetic poles.
Among the above-mentioned figure, 1 is input shaft; 2 is output shaft; 3 is torsion bar; 4 is the torsion bar fixed pin; 5 is the sliding sleeve body; 5A is the S magnetic pole; 5B is the N magnetic pole; 5C is the S magnetic pole; 6 is worm gear; 7 is spring; 8 is steel ball; 8A is the input pivot pin; 8B is the output pivot pin; 9A is the left side magnetic guiding loop; 9B is the right side magnetic guiding loop; 9 is the magnetic guiding loop body; 11 is Hall element; 12 is the PCB circuit board.
Embodiment
Further set forth device of the present utility model below in conjunction with case study on implementation:
Referring to Fig. 1, comprise torsion bar 3, PCB circuit board 12 between input shaft 1, output shaft 2, fixedly connected and input shaft 1 and the output shaft 2, establish between input shaft 1, the output shaft 2 with input shaft 1 and output shaft 2 and relatively rotate and link and produce the sliding sleeve 5 of axial displacement, sliding sleeve 5 is provided with N, the S magnetic pole that ring-type is interspersed; Sliding sleeve 5 is socketed with two magnetic guiding loops with sliding sleeve 5 magnetic pole symmetries, is provided with between two magnetic guiding loops and detects magnetic flux, is connected in the Hall element 11 on the PCB circuit board 12, and Hall element 11 is the programmable hall element.
Sliding sleeve 5 is connected between input shaft 1, the output shaft 2 by helical guideway, relatively rotates and the generation axial displacement that links with input shaft 1 and output shaft 2.Guide rail also comprises the guided way that is arranged on input shaft 1 or the output shaft 2.
Case study on implementation 1,
Referring to Fig. 1-6, input shaft 1 is fixedlyed connected by the mode of interference fit with an end of torsion bar 3; Output shaft 2 is fixedlyed connected by pin with the other end of torsion bar 3; Worm gear 6 and output shaft 2 interference fit; Last two endless grooves of sliding sleeve 5, sliding sleeve 5 at least one endless groove cooperate with the gathering sill of input shaft 1 by ball 8, and at least one endless groove of sliding sleeve 5 opposite sides matches by the helicla flute of ball 8 with input shaft 2.In the implementation case, evenly be embedded with 4 steel balls in each ring-type ball groove of sliding sleeve 5; When between input shaft 1 and the output shaft 2 during action torque, torsion bar 3 distortion that can twist produces relative rotation between input shaft 1 and the output shaft 2; Ball 8 in the close input shaft 1 one side endless grooves of sliding sleeve 5 is subjected under the helicla flute and the axially directed groove effect on the input shaft 1 on the output shaft 2, and generation moves axially, and sliding sleeve 5 also produces and moves axially.
Be press-fitted annular poles 5A, magnetic pole 5B, magnetic pole 5C on the sliding sleeve 5, wherein pole combination is S, N, S or N, S, N.The corresponding magnetic conduction ring set 9 of arranging in the junction of magnetic pole 5A, magnetic pole 5B, magnetic pole 5C, magnetic conduction ring set 9 comprises magnetic guiding loop 9A and magnetic guiding loop 9B, magnetic pole 5A and the junction of magnetic pole 5B corresponding layout magnetic guiding loop 9A, magnetic pole 5B and the junction of magnetic pole 5C corresponding layout magnetic guiding loop 9B; Magnetic guiding loop 9A and magnetic guiding loop 9B are fixed together by magnetic conduction ring set 9 bodies, two programmable hall elements 11 are arranged between magnetic guiding loop 9A, the 9B, Hall element 11 is welded on the PCB circuit board 12, and PCB circuit board 12 is installed in the magnetic conduction ring set 9 (shown in Figure 2).
There is not action torque between input shaft 1 and the output shaft 2, as shown in Figure 3, magnetic guiding loop 9A inner hole surface half facing to magnetic pole 5A second half facing to magnetic pole 5B, magnetic guiding loop 9B inner hole surface half facing to magnetic pole 5B second half facing to magnetic pole 5C, the magnetic flux between this moment magnetic guiding loop 9A and the magnetic guiding loop 9B equals zero substantially; Sliding sleeve 5 drives magnetic pole 5A behind action torque between input shaft 1 and the output shaft 2, magnetic pole 5B, magnetic pole 5C together moves axially, if be moved to the left, as shown in Figure 4, then magnetic guiding loop 9A inner hole surface increases facing to the area of magnetic pole 5A, area facing to magnetic pole 5B reduces, the polarity of magnetic guiding loop 9A will be identical with magnetic pole 5A, magnetic guiding loop 9B inner hole surface increases facing to the area of magnetic pole 5B, area facing to magnetic pole 5C reduces, the polarity of magnetic guiding loop 9B will be identical with magnetic pole 5B, between magnetic guiding loop 9A and the magnetic guiding loop 9B magnetic flux appears, polarity and magnetic pole 5A, polarity between the 5B is identical, if move right, then situation is just in time opposite, as shown in Figure 5, between magnetic guiding loop 9A and the magnetic guiding loop 9B magnetic flux appears, polarity and magnetic pole 5B, polarity between the 5C is identical.
Two Hall elements 11 are respectively applied for the magnetic flux size and Orientation that detects between magnetic guiding loop 9A and the magnetic guiding loop 9B, the PCB circuit board with the signal condition of Hall element 11 after wire harness sheath terminal is given electric booster steering controller.
Curve shown in Figure 6 is the relation of two Hall element 11 output signals and torsion bar distortion, horizontal ordinate is the torsion bar distortion, ordinate is two Hall elements, 11 output signal sizes, two independent output signals of Hall element 11 difference, be a kind of torque sensor Redundancy Design, be used for electric booster steering controller torque sensor signal is carried out fault diagnosis.
Case study on implementation 2:
Referring to Fig. 6-12, the axially movable gear train of sliding sleeve 5 is identical with case study on implementation 1 in the present embodiment, as shown in Figure 5, join two on the sliding sleeve 5 annular poles 5A, magnetic pole 5B are arranged, wherein magnetic pole is distributed as S, N or N, S, sliding sleeve 5 is outside equipped with, its difference of magnetic pole 5A that combines and magnetic pole 5B corresponding layout magnetic guiding loop 9A, magnetic guiding loop 9B; The flange of magnetic guiding loop 9 distributes and the flange of magnetic guiding loop 9B is distributed in 15 ° of phasic differences mutually on the circumference; As shown in Figure 7, Hall element 11 is arranged between magnetic guiding loop 9A, the 9B.
When not having action torque between input shaft 1 and the output shaft 2, as shown in figure 10, magnetic guiding loop 9A go up each flange axial length half facing to magnetic pole 5A second half facing to magnetic pole 5B, magnetic guiding loop 9B go up each flange axial length half facing to magnetic pole 5A second half facing to magnetic pole 5B; Because flange is a trapezoidal shape, this moment, the magnetic polarity of magnetic guiding loop 9A was identical with magnetic pole 5A, and the magnetic polarity of magnetic guiding loop 9B is identical with magnetic pole 5B, and the magnetic flux between magnetic guiding loop 9A and the magnetic guiding loop 9B is φ
0Sliding sleeve 5 drives magnetic pole 5A behind action torque between input shaft 1 and the output shaft 2,5B together moves axially, if be moved to the left, as shown in figure 11, then each flange of magnetic guiding loop 9A reduces facing to the area of magnetic pole 5A, area facing to magnetic pole 5B increases, same each flange of magnetic guiding loop 9B reduces facing to the area of magnetic pole 5A, area facing to magnetic pole 5B increases, magnetic flux between magnetic guiding loop 9A and the magnetic guiding loop 9B reduces, polarity and magnetic pole 5A, polarity between the 5B is identical, if move right, then situation is just in time opposite, as shown in figure 12, the magnetic flux between magnetic guiding loop 9A and the magnetic guiding loop 9B increases, polarity and magnetic pole 5A, polarity between the 5B is identical; Just can obtain the size that torsion bar is out of shape by the magnetic flux change that detects between magnetic guiding loop 9A and the magnetic guiding loop 9B, the detection principle of this magnetic flux change is identical with embodiment shown in Figure 1.
Case study on implementation 3
Referring to Figure 13, input shaft 1 is fixedlyed connected with the interference fit of torsion bar 3; Output shaft 2 is fixedlyed connected by pin with the other end of torsion bar 3; Worm gear 6 and output shaft 2 interference fit; Guide rail is the spiral inner wall groove that is arranged at close output shaft 2 sides on the sliding sleeve 5, output shaft 2 footpaths upwards are provided with the pin 8b that protrudes the diameter of axle, the set helicla flute of the pin 8b that protrudes the diameter of axle and sliding sleeve 5 inwalls cooperates, guided way is to be arranged on the sliding sleeve 5 near the gathering sill on the input shaft 1 side inwall, input shaft 1 footpath upwards is provided with the pin 8a that protrudes the diameter of axle, and the set gathering sill of the pin 8a that protrudes the diameter of axle and sliding sleeve 5 inwalls cooperates.
During action torque, torsion bar 3 torsional deflections produce relative rotation between input shaft 1 and the output shaft 2 between input shaft 1 and the output shaft 2; Sliding sleeve 5 is under the effect of pin 8B and nested helicla flute thereof and pin 8A and nested gathering sill thereof, generation moves axially, the ratio that is deformed into of this amount of movement and torsion bar 3, in order to obtain the distortion size of torsion bar 3, detect the axial internal clearance of sliding sleeve 5, the detection principle case study on implementation 1,2 of this amount of movement is identical.
Case study on implementation 4:
As shown in figure 14, present embodiment sliding sleeve 5 to move axially structure identical with case study on implementation 3, the detection principle case study on implementation 2 of the layout of magnetic pole, magnetic guiding loop 9 and magnetic flux is identical.
Claims (5)
1. motor turning torque-measuring apparatus, comprise input shaft, output shaft, PCB circuit board, it is characterized in that: be provided with between described input shaft, the output shaft with input shaft and output shaft and relatively rotate and link and produce the sliding sleeve of axial displacement, sliding sleeve is provided with N, the S magnetic pole that ring-type is interspersed; Described sliding sleeve is socketed with two magnetic guiding loops with sliding sleeve magnetic pole symmetry, is provided with between described two magnetic guiding loops and detects magnetic flux, is connected in the Hall element on the PCB circuit board.
2. motor turning torque-measuring apparatus as claimed in claim 1 is characterized in that: described sliding sleeve is connected between input shaft, the output shaft by helical guideway, relatively rotates and the generation axial displacement that links with input shaft and output shaft; Described magnetic guiding loop is fixedly connected by magnetic conduction ring set body.
3. motor turning torque-measuring apparatus as claimed in claim 1 or 2 is characterized in that: described guide rail also comprises the guided way that is arranged on input shaft or the output shaft; Described magnetic guiding loop one side is evenly equipped with trapezoidal flange; Described its material of magnetic conduction ring set is a resin.
4. motor turning torque-measuring apparatus as claimed in claim 1 or 2 is characterized in that: described Hall element is the programmable hall element.
5. motor turning torque-measuring apparatus as claimed in claim 1 or 2 is characterized in that: described sliding sleeve is provided with three staggered magnetic poles, and its magnetic pole is distributed as N, S, N or S, N, S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172622U CN201828370U (en) | 2010-08-31 | 2010-08-31 | Automotive steering torque measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172622U CN201828370U (en) | 2010-08-31 | 2010-08-31 | Automotive steering torque measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201828370U true CN201828370U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205172622U Expired - Fee Related CN201828370U (en) | 2010-08-31 | 2010-08-31 | Automotive steering torque measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201828370U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949750A (en) * | 2010-08-31 | 2011-01-19 | 杭州飞越汽车零部件有限公司 | Motor steering torque measuring device and motor steering torque measuring method |
| CN103842786A (en) * | 2011-10-04 | 2014-06-04 | 罗伯特·博世有限公司 | Sensor arrangement |
| CN103935456A (en) * | 2014-04-01 | 2014-07-23 | 钟德斌 | Centre shaft moment sensor |
| CN105333982A (en) * | 2015-11-26 | 2016-02-17 | 哈尔滨力盛达机电科技有限公司 | Vertical non-contact electromagnetic induction torque sensor applied to car EPS system |
| CN108381153A (en) * | 2018-05-18 | 2018-08-10 | 江苏骄阳转向技术有限公司 | Electric direction varying device magnetic guiding loop is molded assembly press-loading apparatus |
| WO2022011831A1 (en) * | 2020-07-17 | 2022-01-20 | 珠海市钧兴机电有限公司 | Magnetic flux type torsion sensor |
-
2010
- 2010-08-31 CN CN2010205172622U patent/CN201828370U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949750A (en) * | 2010-08-31 | 2011-01-19 | 杭州飞越汽车零部件有限公司 | Motor steering torque measuring device and motor steering torque measuring method |
| CN101949750B (en) * | 2010-08-31 | 2012-05-09 | 杭州飞越汽车零部件有限公司 | Motor steering torque measuring device and motor steering torque measuring method |
| CN103842786A (en) * | 2011-10-04 | 2014-06-04 | 罗伯特·博世有限公司 | Sensor arrangement |
| CN103842786B (en) * | 2011-10-04 | 2016-03-23 | 罗伯特·博世有限公司 | Sensor device |
| CN103935456A (en) * | 2014-04-01 | 2014-07-23 | 钟德斌 | Centre shaft moment sensor |
| CN103935456B (en) * | 2014-04-01 | 2016-07-27 | 钟德斌 | A kind of axis torque sensor |
| CN105333982A (en) * | 2015-11-26 | 2016-02-17 | 哈尔滨力盛达机电科技有限公司 | Vertical non-contact electromagnetic induction torque sensor applied to car EPS system |
| CN105333982B (en) * | 2015-11-26 | 2017-10-27 | 哈尔滨力盛达机电科技有限公司 | A kind of vertical non-contact electromagnetic induced torque sensor for automobile EPS |
| CN108381153A (en) * | 2018-05-18 | 2018-08-10 | 江苏骄阳转向技术有限公司 | Electric direction varying device magnetic guiding loop is molded assembly press-loading apparatus |
| CN108381153B (en) * | 2018-05-18 | 2024-04-09 | 江苏骄阳转向技术有限公司 | Press fitting device for injection molding assembly of magnetic conduction ring of electric steering gear |
| WO2022011831A1 (en) * | 2020-07-17 | 2022-01-20 | 珠海市钧兴机电有限公司 | Magnetic flux type torsion sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20120831 |