CN201945415U - Torque sensing device of electric power steering system - Google Patents
Torque sensing device of electric power steering system Download PDFInfo
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- CN201945415U CN201945415U CN2010206854652U CN201020685465U CN201945415U CN 201945415 U CN201945415 U CN 201945415U CN 2010206854652 U CN2010206854652 U CN 2010206854652U CN 201020685465 U CN201020685465 U CN 201020685465U CN 201945415 U CN201945415 U CN 201945415U
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Abstract
The utility model relates to a torque sensing device of an electric power steering system, which belongs to the technical field of manufacturing torque sensors of steering systems. The torque sensing device of the electric power steering system consists of a torque converting unit, an electromechanical signal converting unit and an electronic signal processing unit, wherein the torque converting unit comprises an input shaft, an output shaft, a torque rod, detecting rings, an isolating magnetic ring and the like, wherein the input shaft is connected with the output shaft by the torque rod; the input shaft is provided with an input detecting ring and an auxiliary detecting ring; the output shaft is provided with an output detecting ring; and the electromechanical signal converting unit consists of a detecting coil, an auxiliary detecting coil and an isolating gasket. When the output shaft of the sensing device rotates, the output shaft rotates together under the action of the torque rod. When a torque difference exists between the input shaft and the output shaft, the torque rod can generate certain deformation to cause the change of output voltage signals of the detecting coils, and the output voltage signals are converted into output signals to control a controller to act. The problems that the existing sensing device having mechanical wear, electric potential drift and output signal lag are solved. Furthermore, the sensing device has high precision and good stability and sensitivity.
Description
Technical field:
The utility model relates to a kind of electric boosting steering system torque sensing device, belongs to steering torque sensor manufacturing technology field.
Background technology:
The sensing device that traditional electric boosting steering system is used is made up of torque sensor and spiral rolling track, steel ball, sliding sleeve etc.Its course of work drives the sliding sleeve motion for when steel ball slides in spiral rolling track, thereby drives torque sensor work.Owing to be between steel ball, spiral rolling track, sliding sleeve and the torque sensor and be in contact with one another connection, therefore can produce mechanical wear inevitably in the course of work, cause the torque sensor output signal to be offset, add intrinsic gap in the machinery cooperation, make the variation of sensor output signal lag behind the variation of moment of torsion, turn to feel poor; In addition, because the mismachining tolerance of each component of machine also can cause assembling back torque sensor signal fluctuation greatly, consistance is bad, influences the steering operate as normal.
Summary of the invention:
The purpose of this utility model is, a kind of mechanical shift that torque conversion stage can be produced is provided, be converted to the electric signal output that electric booster steering system controller can be discerned, to solve the problem that existing sensing device exists mechanical wear, temperature drift and lag output signal; Has the electric boosting steering system torque sensing device that followability is good, precision is high, adjustment is simple, production cost is low.
The utility model is to realize above-mentioned purpose by following technical solution:
This electric boosting steering system torque sensing device is made of torque conversion stage, dynamoelectric signal converting unit and electronic signal process unit, dynamoelectric signal converting unit and electronic signal process cell arrangement is characterized in that in the metal shell of same sealing: described torque conversion stage is made up of input shaft, output shaft, torsion bar, input detection ring, output detection ring, auxiliary detection ring and magnetism-isolating loop; Input shaft installs by torsion bar with output shaft and is connected, and is fixed with input detection ring and auxiliary detection ring on the input shaft, is fixed with the output detection ring on the output shaft, the uniform profile of tooth that is manufactured with on the end face of output detection ring, input detection ring and auxiliary detection ring one end; Input detection ring and relative installation of output detection ring profile of tooth are left the gap between the flank of tooth, the auxiliary detection ring has an end of profile of tooth not have the installation of profile of tooth one end with respect to the input detection ring, and leaves the gap, in the input detection ring magnetism-isolating loop is installed; Described dynamoelectric signal converting unit is made up of magnetic test coil, auxiliary detection coil, isolating pad, magnetic test coil is sleeved on input detection ring and output detection ring gap location, the auxiliary detection mounting coil is at input detection ring and auxiliary detection czermak space place, and isolating pad is installed between magnetic test coil and the auxiliary detection coil.
The utility model beneficial effect compared with prior art is:
This electric boosting steering system torque sensing device adopts input detection ring and auxiliary detection ring is installed on the input shaft of torque conversion stage; The output detection ring is installed on output shaft; The magnetic test coil of dynamoelectric signal converting unit is sleeved on the gap location of input detection ring and output detection ring, and the auxiliary detection mounting coil of dynamoelectric signal converting unit is at input detection ring and auxiliary detection czermak space place; When input shaft rotates, next plays rotation to output shaft in the effect of torsion bar, but because torsion bar rigidity is less, when between input shaft and the output shaft torque difference being arranged, torsion bar can produce certain distortion, is converted to output thereby the output voltage signal that causes magnetic test coil takes place by corresponding the variation and offers peripheral control unit and make its action.Solved the defective of existing sensing device mechanical wear, potential drifting and lag output signal.And the precision height, stability, sensitivity is good.Dynamoelectric signal converting unit and electronic signal process unit are contained in the metal shell of sealing, and antijamming capability is strong, has effectively prolonged serviceable life.
Description of drawings:
Fig. 1 is a kind of cut-open view of electric boosting steering system torque sensing device;
Fig. 2 is torque conversion stage and electronic signal process cell schematics.
Among the figure: 1, torque conversion stage, 2, the dynamoelectric signal converting unit, 3, the electronic signal process unit, 4, input shaft, 5, output shaft, 6, torsion bar, 7, the input detection ring, 8, output detection ring, 9, auxiliary detection ring, 10, magnetism-isolating loop, 11, magnetic test coil, 12, auxiliary detection coil, 13, isolating pad.
Embodiment:
This electric boosting steering system torque sensing device is made of torque conversion stage 1, dynamoelectric signal converting unit 2 and electronic signal process unit 3, dynamoelectric signal converting unit 2 and electronic signal process unit 3 devices are in the metal shell of same sealing, with the shielding outer signals, avoid interference sensing device.Electronic signal process unit 3 comprises integrated IC electronic component, and it can adjust signal output as required, to be applicable to the product of the difference in functionality under the different condition.Described torque conversion stage 1 is made of input shaft 4, output shaft 5, torsion bar 6, input detection ring 7, output detection ring 8, auxiliary detection ring 9, magnetism-isolating loop 10, input shaft 4 installs by torsion bar 6 with output shaft 5 and is connected, be fixed with input detection ring 7 and auxiliary detection ring 9 on the input shaft 4, be fixed with output detection ring 8 on the output shaft 5, the uniform profile of tooth that is manufactured with on the end face of output detection ring 8, input detection ring 7 and auxiliary detection ring 9 one ends; The relative angle that staggers with output detection ring 8 profiles of tooth of input detection ring 7 is installed, and leaves the gap between the flank of tooth, and auxiliary detection ring 9 has an end of profile of tooth to install with respect to an end of input detection ring 7 no profiles of tooth, and leaves the gap, in the input detection ring 7 magnetism-isolating loop 10 is installed.Described dynamoelectric signal converting unit 2 is made up of magnetic test coil 11, auxiliary detection coil 12, isolating pad 13, magnetic test coil 11 is sleeved on the gap location of input detection ring 7 and output detection ring 8, auxiliary detection coil 12 is sleeved on the gap location of input detection ring 7 and auxiliary detection ring 9, and isolating pad 13 is installed between magnetic test coil 11 and the auxiliary detection coil 12.
During the work of this electric boosting steering system torque sensing device, when input shaft 4 rotated, next played rotation to output shaft 5 in the effect of torsion bar 6, because torsion bar 6 rigidity are less, when between input shaft 4 and the output shaft 5 torque difference being arranged, torsion bar 6 can produce certain deformation; Simultaneously, can cause exporting that the relative overlapping area between the profile of tooth changes on detection ring 8 and input detection ring 7 end faces; When torque difference not simultaneously, the deflection of torsion bar is also different, the relative overlapping area of then exporting between detection ring 8 and input detection ring 7 profiles of tooth is also inequality, make the magnetic induction on the profile of tooth change, the variation of magnetic induction is converted into voltage signal by coil, thereby corresponding the variation takes place in the output voltage signal that causes magnetic test coil 11, and electronic signal process unit 3 collects after this changes, and is converted into corresponding output signal and offers peripheral control unit and make its action.In entire work process, relative position relation between input detection ring 7 and the auxiliary detection ring 9 is constant all the time, output signal herein only can vary with temperature and change, after electronic signal process unit 3 collects this variation, variable quantity is compensated in the final output signal, thereby eliminate the influence that temperature variation is brought.Magnetism-isolating loop 10 devices are between input detection ring 7 and input shaft 4; Isolating pad 13 device is between magnetic test coil 11 and auxiliary detection coil 12, and is interference-free to guarantee input, output detection signal, sends detection signal accurately.Gap signal value between output detection ring 8 and the input detection ring 7 and the gap signal value between input detection ring 7 and the auxiliary detection ring 9 have a corresponding relation, relatively export by this corresponding relation, by electronic signal process unit 3 adjust, control, eliminate the influence of wafing of temperature that temperature variation brings.
Claims (1)
1. electric boosting steering system torque sensing device, it is made of torque conversion stage (1), dynamoelectric signal converting unit (2), electronic signal process unit (3), dynamoelectric signal converting unit (2) and electronic signal process unit (3) device is characterized in that in the metal shell of same sealing: described torque conversion stage (1) is made up of input shaft (4), output shaft (5), torsion bar (6), input detection ring (7), output detection ring (8), auxiliary detection ring (9) and magnetism-isolating loop (10); Input shaft (4) installs by torsion bar (6) with output shaft (5) and is connected, be fixed with input detection ring (7) and auxiliary detection ring (9) on the input shaft (4), be fixed with output detection ring (8) on the output shaft (5), the uniform profile of tooth that is manufactured with on the end face of output detection ring (8), input detection ring (7) and auxiliary detection ring (9) one ends; Input detection ring (7) and relative installation of profile of tooth of exporting detection ring (8), leave the gap between the flank of tooth, auxiliary detection ring (9) has an end of profile of tooth to install with respect to an end of the no profile of tooth of input detection ring (7), and leaves the gap, in the input detection ring (7) magnetism-isolating loop (10) is installed; Described dynamoelectric signal converting unit is made up of magnetic test coil (11), auxiliary detection coil (12) and isolating pad (13), magnetic test coil (11) is sleeved on the gap location of input detection ring (7) and output detection ring (8), auxiliary detection coil (12) is sleeved on the gap location of input detection ring (7) and auxiliary detection ring (9), and isolating pad (13) is installed between magnetic test coil (11) and the auxiliary detection coil (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206854652U CN201945415U (en) | 2010-12-23 | 2010-12-23 | Torque sensing device of electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206854652U CN201945415U (en) | 2010-12-23 | 2010-12-23 | Torque sensing device of electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945415U true CN201945415U (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206854652U Expired - Fee Related CN201945415U (en) | 2010-12-23 | 2010-12-23 | Torque sensing device of electric power steering system |
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| Country | Link |
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| CN (1) | CN201945415U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607751A (en) * | 2012-03-07 | 2012-07-25 | 中国航空动力机械研究所 | Output torque measurement device of turboshaft engine |
| CN103644992A (en) * | 2013-11-04 | 2014-03-19 | 广东精铟机械有限公司 | Device for measuring drilling platform lifting unit climbing gear torque |
| CN106655535A (en) * | 2016-11-07 | 2017-05-10 | 深圳市镭神智能***有限公司 | 360-DEG TOF laser scanning radar based on wireless transmission |
-
2010
- 2010-12-23 CN CN2010206854652U patent/CN201945415U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607751A (en) * | 2012-03-07 | 2012-07-25 | 中国航空动力机械研究所 | Output torque measurement device of turboshaft engine |
| CN102607751B (en) * | 2012-03-07 | 2014-06-11 | 中国航空动力机械研究所 | Output torque measurement device of turboshaft engine |
| CN103644992A (en) * | 2013-11-04 | 2014-03-19 | 广东精铟机械有限公司 | Device for measuring drilling platform lifting unit climbing gear torque |
| CN103644992B (en) * | 2013-11-04 | 2016-03-23 | 广东精铟海洋工程股份有限公司 | A kind of for measuring drilling platform lifting unit climbing gear torquer |
| CN106655535A (en) * | 2016-11-07 | 2017-05-10 | 深圳市镭神智能***有限公司 | 360-DEG TOF laser scanning radar based on wireless transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20171223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |