Testing device of torque and angle sensor

Abstract

The utility model discloses a testing device of a torque and angle sensor. The device comprises a rack, a positioning and pressing unit for positioning and pressing the torque angle sensor, a plugging assembly which is arranged at the side of the positioning and pressing unit and realizes conduction of the torque angle sensor and a test instrument, a motor arranged at the lower end of the rack, and a rotating shaft which is driven by the motor to rotate, the encoder is arranged on the periphery of the middle part of the rotating shaft and is connected with a torque and angle sensor; the sleeve is fixed at the upper end of the rotating shaft and can extend into the positioning and pressing unit; the inner support rotating assembly is arranged in the sleeve in an up-down movable mode and can stretch into the torque angle sensor to drive a magnetic conductive ring in the torque angle sensor to rotate together, the driving assembly drives the inner support rotating assembly to move upwards, and the elastic piece enables the inner support rotating assembly to elastically reset downwards. The linear structure is simple in overall structure, compact in layout and extremely small in occupied space.

Description

[Technical field]

[0001] The utility model belongs to the technical field of sensor testing, in particular to a testing device for a torque angle sensor. [Background technology]

[0002] The automotive power steering system (EPS) is a key safety control technology during vehicle driving. The torque angle sensor (TAS) is an important part of the automotive electric power steering system. Its function is to measure the torque of the steering wheel to determine how much steering assistance the EPS provides. Therefore, its performance needs to be tested to determine whether the quality of the torque angle sensor meets the vehicle power steering requirements. Therefore, it is necessary to design relevant test equipment to perform performance tests on the torque angle sensor.

[0003] For example, a torque angle sensor assembly testing machine disclosed in Chinese patent authorization announcement number CN218994618U includes a main frame, a clamping assembly arranged on the main frame, and a test assembly used in conjunction with the clamping assembly, wherein the test assembly is arranged above the clamping assembly and is characterized in that: the clamping assembly includes a slide rail arranged on the main frame, a quick clamp installed on the slide rail through a slider, a guide rail clamp arranged at the bottom of the quick clamp and used in conjunction with the slide rail, an elevator arranged on the main frame, and a three-jaw chuck driven up and down by the elevator, the test assembly includes a servo motor, a torque sensor connected through a first coupling and driven by the servo motor, an angle encoder connected to the torque sensor through a second coupling, and a collet connected to the angle encoder. Although the above scheme can realize the test of the torque angle sensor, the clamping assembly and the test assembly are separately arranged on the main frame. During the test, the clamping assembly needs to be moved up to insert the torque angle sensor into the collet of the test assembly, and then the relevant locking parts are locked before the relevant test can be carried out. The overall layout and structure are relatively complex and occupy a large space.

[0004] Therefore, it is necessary to provide a testing device for a torque angle sensor to solve the above technical problems. [Contents of the utility model]

[0005] The main purpose of the utility model is to provide a test device for a torque angle sensor, which has a linear structure, a simple overall structure, a compact layout, and occupies very little space.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a testing device for a torque angle sensor, which includes a frame, a positioning and clamping unit arranged at the upper end of the frame and used to position and clamp the torque angle sensor, a plug-in assembly arranged beside the positioning and clamping unit and used to realize conduction between the torque angle sensor and a testing instrument, a motor arranged at the lower end of the frame, a rotating shaft driven to rotate by the motor, an encoder arranged at the outer periphery of the middle part of the rotating shaft and connected to the torque angle sensor, a sleeve fixed at the upper end of the rotating shaft and capable of extending into the interior of the positioning and clamping unit, an inner support rotating assembly movably arranged in the sleeve and capable of extending into the interior of the torque angle sensor to drive the magnetic ring in the torque angle sensor to rotate together, a driving assembly driving the inner support rotating assembly to move upward, and an elastic member for elastically resetting the inner support rotating assembly downward.

[0007] Furthermore, the positioning and clamping unit includes a positioning plate arranged at the upper end of the frame and positioning the torque angle sensor, a clamping plate pressed on the upper end of the torque angle sensor, and a first cylinder driving the clamping plate to move up and down. The positioning plate is provided with a contoured positioning groove that is contoured to the torque angle sensor. When the torque angle sensor is placed on the contoured positioning groove, the upper end of the sleeve and the inner support rotating assembly extend out of the contoured positioning groove and are located inside the torque angle sensor.

[0008] Furthermore, the plug-in assembly includes a plug-in component inserted into the torque angle sensor to achieve connection and a second cylinder driving the plug-in component to achieve plugging and unplugging actions.

[0009] Furthermore, the internal support rotating assembly includes a plurality of support blocks which are radially and equiangularly telescopically arranged on the side wall of the sleeve and can extend into the interior of the torque angle sensor, an axis core which drives the plurality of support blocks to expand outward at the same time to tighten the inner wall of the magnetic ring of the torque angle sensor, and a support shaft which is transversely arranged on the axis core and drives the axis core to move upward.

[0010] Furthermore, several of the support blocks are connected together by an elastic clamp, and a groove for clamping the elastic clamp is provided on the outer side of the support block; a conical guide surface is provided at the top end of the shaft core, and several of the support blocks are surrounded by the outer circumference of the guide surface.

[0011] Furthermore, the lower end of the shaft core extends into the upper end of the rotating shaft, and the elastic member is sleeved on the lower end of the shaft core; the lower end of the sleeve is provided with an annular step hole, and the bottom of the shaft core is provided with a limiting boss, the lower end of the elastic member abuts against the limiting boss, and the upper end abuts against the groove wall at the upper end of the annular step hole.

[0012] Furthermore, the sleeve includes a plurality of contoured avoidance openings arranged on the side wall for the support block to move outward, a waist-shaped hole arranged at the lower end of the contoured avoidance opening for the support shaft to move up and down, and an axial hole arranged through the upper and lower ends for the shaft core to pass through.

[0013] Furthermore, the driving assembly includes a moving frame that drives the supporting shaft to move upward and a third cylinder that drives the moving frame to move upward.

[0014] Furthermore, a bearing sleeve is fixed on the frame, a plurality of bearings are arranged on the outer periphery of the rotating shaft, and the rotating shaft is installed in the bearing sleeve through the plurality of bearings.

[0015] Compared with the prior art, the beneficial effects of the testing device of the torque angle sensor of the utility model are: the overall structure is simple, the layout is compact, and the space occupied is extremely small; a sleeve is fixed at the top of the rotating shaft, and an internal support rotating assembly is arranged inside the sleeve for upward and downward movement. The arranged internal support rotating assembly can tighten the inner wall of the magnetic ring in the torque angle sensor and drive the magnetic ring to rotate to complete the corresponding test. The arranged internal support rotating assembly has a simple structure, and several support blocks are connected together by elastic clamps. A conical guide surface is arranged at the top of the shaft core, and several support blocks are arranged around the outer circumference of the guide surface. The support blocks can elastically tighten the inner wall of the magnetic ring and drive the magnetic ring to rotate together through the action of friction.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a test device for a torque angle sensor according to an embodiment of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a test device for a torque angle sensor according to an embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of a test device for a torque angle sensor according to an embodiment of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the rotating shaft, sleeve and inner support rotating assembly of the embodiment of the utility model;

[0020] Figure 5 For the utility model embodiment Figure 4 A schematic diagram of a longitudinal cross-sectional structure;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the sleeve and the inner support rotating assembly of the embodiment of the utility model;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the internal support rotating assembly of the embodiment of the utility model;

[0023] The numbers in the figure represent:

[0024] 100-Torque angle sensor test device; 200-Torque angle sensor;

[0025] 1-frame, 11-bearing sleeve;

[0026] 2-positioning and clamping unit, 21-positioning plate, 211-profile positioning groove, 22-pressing plate, 23-first cylinder;

[0027] 3-plug assembly, 31-plug connector, 32-second cylinder;

[0028] 4-motor; 5-rotating shaft, 51-first boss, 52-accommodating hole; 6-encoder;

[0029] 7-sleeve, 71-profile avoidance opening, 72-waist-shaped hole, 73-axis hole, 74-annular step hole, 75-second boss;

[0030] 8-inner support rotating assembly, 81-support block, 811-cage, 82-axis core, 821-guide surface, 822-limiting boss, 83-support shaft rod, 84-elastic clamp;

[0031] 9-driving assembly, 91-third cylinder, 92-moving frame, 921-first supporting plate, 922-second supporting plate, 923-supporting column;

[0032] 10-Elastic member. [Specific implementation method]

[0033] Please refer to Figure 1-Figure 7 The present embodiment is a testing device 100 for a torque angle sensor, which is used to drive the magnetic conductive ring inside the torque angle sensor 200 to rotate, and to measure the deformation of the induction coil on the magnetic conductive ring to measure the torque input-output characteristic curve and the angle input-output characteristic curve of the torque angle sensor 200. By judging whether the input-output curve meets the requirements, it is judged whether the torque angle sensor 200 is qualified.

[0034] The testing device 100 of the torque angle sensor includes a frame 1, a positioning and clamping unit 2 arranged at the upper end of the frame 1 and used to position and clamp the torque angle sensor 200, a plug-in assembly 3 arranged beside the positioning and clamping unit 2 and used to connect the torque angle sensor 200 with the testing instrument, a motor 4 arranged at the lower end of the frame 1, a rotating shaft 5 driven to rotate by the motor 4, an encoder 6 arranged at the outer periphery of the middle part of the rotating shaft 5 and connected to the torque angle sensor 200, a sleeve 7 fixed at the upper end of the rotating shaft 5 and capable of extending into the interior of the positioning and clamping unit 2, an inner support rotating assembly 8 that is movably arranged in the sleeve 7 and capable of extending into the interior of the torque angle sensor 200 to drive the magnetic ring in the torque angle sensor 200 to rotate together, a driving assembly 9 that drives the inner support rotating assembly 8 to move upward, and an elastic member 10 that elastically resets the inner support rotating assembly 8 downward.

[0035] The positioning and clamping unit 2 includes a positioning plate 21 which is arranged at the upper end of the frame 1 and positions the torque angle sensor 200, a clamping plate 22 which is clamped on the upper end of the torque angle sensor 200, and a first cylinder 23 which drives the clamping plate 22 to move up and down. The positioning plate 21 is provided with a contoured positioning groove 211 which is contoured with the torque angle sensor 200. When the torque angle sensor 200 is placed on the contoured positioning groove 211, the upper end of the sleeve 7 and the inner support rotating assembly 8 extend out of the contoured positioning groove 211 and are located inside the torque angle sensor 200.

[0036] The plug-in assembly 3 includes a plug-in component 31 inserted into the torque angle sensor 200 to achieve connection and a second cylinder 32 driving the plug-in component 31 to achieve plugging and unplugging. The second cylinder 32 is fixed on the frame 1 and located on the side of the contoured positioning groove 211.

[0037] The internal support rotating assembly 8 includes a plurality of support blocks 81 which are radially and equiangularly telescopically arranged on the side wall of the sleeve 7 and can extend into the interior of the torque angle sensor 200, an axis core 82 which drives the plurality of support blocks 81 to expand outward at the same time to tighten the inner wall of the magnetic ring of the torque angle sensor 200, and a support shaft rod 83 which is transversely arranged on the axis core 82 and drives the axis core 82 to move upward.

[0038] Several support blocks 81 are connected together by elastic clamps 84, and a clamping groove 811 for clamping the elastic clamps 84 is provided on the outer side of the support blocks 81; a conical guide surface 821 is provided on the top of the shaft core 82, and several support blocks 81 surround the outer periphery of the guide surface 821. When the shaft core 82 moves upward, the guide surface 821 will drive several support blocks 81 to expand outward at the same time and tighten on the inner wall of the magnetic ring of the torque angle sensor 200. At this time, the elastic clamp 84 opens, and when the shaft core 82 moves downward, the elastic clamp 84 contracts, driving several support blocks 81 to move inward at the same time.

[0039] The sleeve 7 includes a plurality of contoured avoidance openings 71 arranged on the side wall for the support block 81 to move radially, a waist-shaped hole 72 arranged at the lower end of the contoured avoidance opening 71 for the support shaft 83 to move up and down, and an axial hole 73 arranged through the upper and lower ends and for the shaft core 82 to pass through.

[0040] The supporting shaft 83 passes through the sleeve 7 and the shaft core 82 in sequence; the lower end of the shaft core 82 extends into the upper end of the rotating shaft 5, and a corresponding accommodating hole 52 is arranged inside the upper end of the rotating shaft 5. The elastic member 10 is sleeved on the lower end of the shaft core 82, and the elastic member 10 is a spring. The lower end of the sleeve 7 is provided with an annular step hole 74, and the bottom of the shaft core 82 is provided with a limiting boss 822. The lower end of the spring is abutted against the limiting boss 822, and the upper end is abutted against the groove wall at the upper end of the annular step hole 74.

[0041] The driving assembly 9 includes a moving frame 92 that drives the supporting shaft 83 to move upward and a third cylinder 91 that drives the moving frame 92 to move upward.

[0042] The mobile frame 92 includes a first support plate 921 at a lower end and a second support plate 922 at an upper end. The first support plate 921 and the second support plate 922 are fixedly connected via a plurality of support columns 923 .

[0043] The third cylinder 91 drives the movable frame 92 to drive the support shaft 83 to move upward, and the support shaft 83 drives the shaft core 82 to move upward, so that several support blocks 81 expand outward at the same time and support and press on the magnetic ring in the torque angle sensor 200. At this time, the upward movement of the shaft core 82 causes the spring to be compressed. Due to the friction between the support block 81 and the inner wall of the magnetic ring, when the motor 4 drives the rotating shaft 5 to rotate, the sleeve 7 drives the support shaft 83 to rotate, thereby driving the inner support rotating component 8 to rotate, and the rotation of the inner support rotating component 8 drives the magnetic ring to rotate, and the torque angle sensor 200 connects the conductive encoder 6 and the connector 31, thereby completing the relevant test. After the test is completed, the third cylinder 91 drives the movable frame 92 to move downward, and the spring stretches and resets to drive the shaft core 82 to move downward, so that several support blocks 81 retract inward at the same time and disengage from the torque angle sensor 200, and the torque angle sensor 200 that has been tested can be taken out.

[0044] A bearing sleeve 11 is fixed on the frame 1, and a plurality of bearings are arranged on the outer periphery of the rotating shaft 5. The rotating shaft 5 is installed in the bearing sleeve 11 through the plurality of bearings. A first boss 51 is arranged at the top end of the rotating shaft 5, and a second boss 75 is arranged at the bottom end of the sleeve 7. The first boss 51 and the second boss 75 are fixedly installed.

[0045] When the test device 100 of the torque angle sensor provided by the present solution is used, the torque angle sensor 200 is placed in the contoured positioning groove 211, the first cylinder 23 drives the clamping plate 22 to press on the upper surface of the torque angle sensor 200, the third cylinder 91 drives the moving frame 92 to drive the supporting shaft 83 to move upward, the supporting shaft 83 drives the shaft core 82 to move upward so that a plurality of supporting blocks 81 simultaneously expand outward and support and press on the magnetic conductive ring in the torque angle sensor 200, at this time, the elastic clamp 84 opens, the shaft core 82 moves upward, causing the spring to be compressed; the encoder 6 is connected to the torque angle sensor 200, the second cylinder 32 drives the connector 31 to be inserted into the torque angle sensor 200 to realize the connection; the motor 4 drives the rotating shaft 5 to rotate, and the sleeve 7 drives the rotating shaft 5 to rotate. The dynamic support shaft 83 rotates to drive the inner support rotating component 8 to rotate, and the rotation of the inner support rotating component 8 drives the magnetic ring to rotate, and the relevant test is started. It rotates at the required first angular velocity, and reads the signal through the encoder 6 to obtain the input-output characteristic curve of the torque. It rotates at the required second angular velocity, and reads the signal through the encoder to obtain the input-output characteristic curve of the angle. The characteristic curve is used to determine whether the torque angle sensor 200 is qualified; after the test is completed, the third cylinder 91 drives the moving frame 92 to move downward, and the spring stretches and resets to drive the shaft core 82 to move downward, so that several support blocks 81 retract inward at the same time and disengage from the torque angle sensor 200, and the first cylinder 23 drives the clamping plate 22 to move upward, takes out the tested torque angle sensor 200, and continues to the next round of testing.

[0046] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A test device for a torque angle sensor, characterized in that: The invention comprises a frame, a positioning and clamping unit arranged at the upper end of the frame for positioning and clamping a torque angle sensor, a plug-in assembly arranged beside the positioning and clamping unit for realizing conduction between the torque angle sensor and a testing instrument, a motor arranged at the lower end of the frame, a rotating shaft driven to rotate by the motor, an encoder arranged at the outer periphery of the middle part of the rotating shaft and connected to the torque angle sensor, a sleeve fixed at the upper end of the rotating shaft and capable of extending into the interior of the positioning and clamping unit, an inner support rotating assembly movable up and down in the sleeve and capable of extending into the interior of the torque angle sensor to drive the magnetic ring in the torque angle sensor to rotate together, a driving assembly driving the inner support rotating assembly to move upward, and an elastic member for elastically resetting the inner support rotating assembly downward.

2. The test device for the torque angle sensor according to claim 1, characterized in that: The positioning and clamping unit includes a positioning plate which is arranged at the upper end of the frame and positions the torque angle sensor, a clamping plate which is clamped on the upper end of the torque angle sensor, and a first cylinder which drives the clamping plate to move up and down. The positioning plate is provided with a contoured positioning groove which is contoured with the torque angle sensor. When the torque angle sensor is placed on the contoured positioning groove, the upper end of the sleeve and the inner support rotating assembly extend out of the contoured positioning groove and are located inside the torque angle sensor.

3. The test device for the torque angle sensor according to claim 1, characterized in that: The plug-in assembly includes a plug-in component inserted into the torque angle sensor to achieve connection and conduction, and a second cylinder driving the plug-in component to achieve plug-in and pull-out actions.

4. The test device for the torque angle sensor according to claim 1, characterized in that: The inner support rotating assembly includes a plurality of support blocks which are radially and equiangularly telescopically arranged on the side wall of the sleeve and can extend into the interior of the torque angle sensor, an axis core which drives the plurality of support blocks to expand outward at the same time to tighten the inner wall of the magnetic ring of the torque angle sensor, and a support shaft which is transversely arranged on the axis core and drives the axis core to move upward.

5. The test device for the torque angle sensor according to claim 4, characterized in that: A plurality of the support blocks are connected together by an elastic clamp, and a clamping groove for clamping the elastic clamp is arranged on the outer side of the support block; a conical guide surface is arranged on the top end of the shaft core, and a plurality of the support blocks surround the outer circumference of the guide surface.

6. The test device for the torque angle sensor according to claim 4, characterized in that: The lower end of the shaft core extends into the upper end of the rotating shaft, and the elastic member is sleeved on the lower end of the shaft core; an annular step hole is provided at the lower end of the sleeve, and a limiting boss is provided at the bottom of the shaft core, the lower end of the elastic member abuts against the limiting boss, and the upper end abuts against the groove wall at the upper end of the annular step hole.

7. The testing device for the torque angle sensor according to claim 4, characterized in that: The sleeve includes a plurality of contoured avoidance openings arranged on the side wall for the support block to move outward, a waist-shaped hole arranged at the lower end of the contoured avoidance opening for the support shaft to move up and down, and an axial hole arranged through the upper and lower ends and for the shaft core to pass through.

8. The testing device for the torque angle sensor according to claim 4, characterized in that: The driving assembly includes a moving frame that drives the supporting shaft to move upward and a third cylinder that drives the moving frame to move upward.

9. The testing device for the torque angle sensor according to claim 1, characterized in that: A bearing sleeve is fixed on the frame, a plurality of bearings are arranged on the outer periphery of the rotating shaft, and the rotating shaft is installed in the bearing sleeve through the plurality of bearings.

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