CN203177838U - Angle and torque sensor assembly used for automobile electric power assisted steering - Google Patents
Angle and torque sensor assembly used for automobile electric power assisted steering Download PDFInfo
- Publication number
- CN203177838U CN203177838U CN 201320128649 CN201320128649U CN203177838U CN 203177838 U CN203177838 U CN 203177838U CN 201320128649 CN201320128649 CN 201320128649 CN 201320128649 U CN201320128649 U CN 201320128649U CN 203177838 U CN203177838 U CN 203177838U
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- angle
- sensor assembly
- torque sensor
- electric power
- arc groove
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Abstract
The utility model relates to an angle and torque sensor assembly used for automobile electric power assisted steering. The angle and torque sensor assembly comprises a housing (9), an input shaft (1) connected with a steering wheel, a torsion bar (5) fixedly connected with the input shaft (1), and a sensor (7). The angle and torque sensor assembly is characterized in that a sleeve ring (3) sleeved on the torsion bar (5) is provided, and a balance pressure spring (4) is disposed between the sleeve ring (3) and the housing (9); the torsion bar (5) is parallely provided with a group of spiral track grooves (10); an inner wall of the sleeve ring (3) is provided with a first arc groove (11); a steel ball (2) is disposed between each of the spiral track grooves (10) and the arc groove (11); an outer wall of one end of the sleeve ring (3) is provided with a second arc groove (12); a measuring end of the sensor (7) is disposed in the second arc groove (12). The angle and torque sensor assembly has advantages of simple structure, high measurement accuracy, convenient disassembly, low costs, and wide application in automobile electric power assisted steering system field.
Description
Technical field
The utility model relates to automobile electric booster steering system, especially relates to a kind of automobile electric power-assisted steering angle and torque sensor assembly.
Background technology
Steering wheel angle and torque sensor are one of important composition parts of automobile EPS system.Corner when angular transducer is measured the bearing circle rotation and the differential seat angle in centre position.Torque sensor is measured the moment of torsion that transmits between bearing circle and the steering gear output shaft.At last angle value and torque value are changed into electric signal, send ECU to by serial ports, ECU by computational analysis after to drive motor output particular current, realize the assistant of steering.
Be 200820099469.5 to disclose the automobile-used angle of a kind of non-contact type and torque sensor assembly as the Chinese patent publication number, first driving sleeve and the second driving sleeve leading portion coaxial space cooperate; Torsion bar is sheathed among the coaxial cavity of described first driving sleeve and second driving sleeve, and the two ends of torsion bar are coupled with input shaft and output shaft by first driving sleeve and second driving sleeve respectively; The outer, stage casing of first driving sleeve is provided with first driving gear and meshes three first identical follower gears, and the leading portion outer of second driving sleeve is provided with second driving gear and meshes other three second identical follower gears; Also be provided with the annular circuit board, be respectively equipped with giant magnetoresistance GMR sensor on the circuit board two panels; Be respectively equipped with the magnetic cylinder of radial polarised on first follower gear and second follower gear, and corresponding with the giant magnetoresistance GMR sensor on the circuit board respectively.
Though it is contactless that above-mentioned patent has adopted, it is little to wear and tear, structure relative complex, dismounting inconvenience, cost height.
The utility model content
The purpose of this utility model provides a kind of automobile electric power-assisted steering with angle and torque sensor assembly, solves existing torsion-beam-type sensor unit complex structure, the problem of dismounting inconvenience.
In order to solve technical matters recited above, the utility model is taked following technical scheme: a kind of automobile electric power-assisted steering comprises housing, the input shaft that is connected with bearing circle with angle and torque sensor assembly, the torque arm of fixedlying connected with input shaft, sensor; Also comprise the lasso that is enclosed within on the torque arm, be provided with the balance stage clip between lasso and housing, be arranged with one group of helical trajectory groove on the described torque arm in parallel, described lasso inwall is provided with first arc groove, is provided with a steel ball between each helical trajectory groove and arc groove; The outer wall of lasso one end is provided with second arc groove, and the measuring junction of sensor places in second arc groove.
Further, described helical trajectory groove is arranged with three at least in parallel.
Preferably, described helical trajectory groove evenly is provided with 4.
More steady for the motion that guarantees lasso, described first arc groove is provided with two.
Described torque arm is provided with mounting hole vertically, and the abutting end of input shaft places in the mounting hole and by fixed pin fixedlys connected with torque arm.
The beneficial effects of the utility model: drive lasso by steel ball and move up and down, measuring junction is fixed on sensor on the lasso by the move distance that detects lasso and corner and the moment of torsion that run duration calculates input shaft, this structure is when realizing electric power steering corner and torque arithmetic, simple in structure, frictional resistance is little, and lasso and steel ball is easy for installation, and accuracy requirement is low, low cost of manufacture.Described helical trajectory groove arranges 4, makes the motion of lasso more steady, strong interference immunity, and described first arc groove arranges 2, has further improved the stability of lasso motion.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is longitudinal sectional view of the present utility model.
Fig. 2 is transverse sectional view of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, a kind of automobile electric power-assisted steering angle and torque sensor assembly, comprise housing 9, be provided with a die cavity in the housing 9, the input shaft 1 that is connected with bearing circle, an end of input shaft 1 places in the die cavity, the torque arm 5 of fixedlying connected with input shaft 1, the end that torque arm 5 is connected with input shaft 1 also places in the die cavity, and described torque arm 5 is provided with mounting hole 51 vertically, and the abutting end of input shaft 1 places in the mounting hole 51 and by fixed pin 6 fixedlys connected with torque arm 5.Be set with lasso 3 on the described torque arm 5, be provided with balance stage clip 4 between the end face of lasso 3 and housing 9 die cavities, be arranged with one group of helical trajectory groove 10 on the described torque arm 5 in parallel, described lasso 3 inwalls are provided with first arc groove 11, and 11 of each helical trajectory groove 10 and arc grooves are provided with a steel ball 2; Described helical trajectory groove 10 is arranged with three at least in parallel, and preferred, described helical trajectory groove 10 evenly is provided with 4.Be to improve the stability of lasso 3, described first arc groove 11 is provided with two, and two first arc grooves 11 and 10 of helical trajectory grooves are provided with steel ball 2.The outer wall that is positioned at lasso 3 one ends is provided with second arc groove 12, and the measuring junction of sensor 7 places in second arc groove 12.
Principle of work of the present utility model: when bearing circle is in original state, the elastic force of the gravity of lasso and balance stage clip keeps balance, when steering wheel rotation, bearing circle drives input shaft and rotates, input shaft drives the torque arm rotation, the steel ball that lasso be used for to be installed is subjected under the inertia acting in conjunction of the rotation of torque arm and lasso, can be in the helical guideway of torque arm produce around the rotational motion of central shaft and be parallel to the relative motion of central axis direction, the lasso that drive is connected with steel ball is along the axially-movable of torque arm, the measuring junction that the motion of lasso drives sensor moves together, the angle of sensor by the computational analysis measuring junction changes and the response time calculates corner and the moment of torsion of input shaft, and signal passed to ECU, ECU carries out computing according to the program that configures in advance to all feedback information of coming, handle; Make electric boosting steering system can cooperate the comprehensive conditions such as the speed of a motor vehicle, engine speed of automobile according to driver's driving intention, to drive motor output particular current, thereby realize comfortableness and the security that automobile is controlled.
Claims (5)
1. an automobile electric power-assisted steering comprises housing (9), the input shaft that is connected with bearing circle (1), the torque arm (5) of fixedlying connected with input shaft (1), sensor (7) with angle and torque sensor assembly; It is characterized in that: also comprise the lasso (3) that is enclosed within on the torque arm (5), be provided with balance stage clip (4) between lasso (3) and housing (9), be arranged with one group of helical trajectory groove (10) on the described torque arm (5) in parallel, described lasso (3) inwall is provided with first arc groove (11), is provided with a steel ball (2) between each helical trajectory groove (10) and arc groove (11); The outer wall of lasso (3) one ends is provided with second arc groove (12), and the measuring junction of sensor (7) places in second arc groove (12).
2. automobile electric power-assisted steering as claimed in claim 1 is with angle and torque sensor assembly, and it is characterized in that: described helical trajectory groove (10) is arranged with three at least in parallel.
3. automobile electric power-assisted steering as claimed in claim 2 is with angle and torque sensor assembly, and it is characterized in that: described helical trajectory groove (10) evenly is provided with 4.
4. automobile electric power-assisted steering as claimed in claim 1 is with angle and torque sensor assembly, and it is characterized in that: described first arc groove (11) is provided with two.
5. as claim 1 to 4 any described automobile electric power-assisted steering angle and a torque sensor assembly, it is characterized in that: described torque arm (5) is provided with mounting hole (51) vertically, and the abutting end of input shaft (1) places in the mounting hole (51) and by fixed pin (6) fixedlys connected with torque arm (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128649 CN203177838U (en) | 2013-03-20 | 2013-03-20 | Angle and torque sensor assembly used for automobile electric power assisted steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320128649 CN203177838U (en) | 2013-03-20 | 2013-03-20 | Angle and torque sensor assembly used for automobile electric power assisted steering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203177838U true CN203177838U (en) | 2013-09-04 |
Family
ID=49074521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320128649 Expired - Lifetime CN203177838U (en) | 2013-03-20 | 2013-03-20 | Angle and torque sensor assembly used for automobile electric power assisted steering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203177838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206942A (en) * | 2013-03-20 | 2013-07-17 | 昌辉汽车电器（黄山）股份公司 | Angle and torque transducer assembly for automobile electric power steering |
| CN105313955A (en) * | 2015-11-17 | 2016-02-10 | 捷伸电子科技（上海）有限公司 | Electric power steering system |
-
2013
- 2013-03-20 CN CN 201320128649 patent/CN203177838U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206942A (en) * | 2013-03-20 | 2013-07-17 | 昌辉汽车电器（黄山）股份公司 | Angle and torque transducer assembly for automobile electric power steering |
| CN105313955A (en) * | 2015-11-17 | 2016-02-10 | 捷伸电子科技（上海）有限公司 | Electric power steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |