Automobile steering system testing device

Abstract

The utility model relates to the technical field of whole vehicle testing, in particular to an automobile steering system testing device, a clamping assembly can be fixedly mounted on a steering wheel, centering of a hollow driving assembly and the steering wheel can be ensured through cooperation of a centering tool and the clamping assembly, the process of mounting the hollow driving assembly on the steering wheel in a centering manner is simpler, and the testing efficiency is improved. The precision is higher; the hollow driving assembly is connected with the measuring assembly, when the steering wheel rotates, the connecting rod can transmit the torque borne by the hollow driving assembly to the torque sensor, and the torque sensor is calibrated more conveniently in the installation process of the testing system. A leveling tool is further arranged between the measuring plate and the hollow driving assembly and used for adjusting the two connecting rods to be located in the same plane, and the installation efficiency of the testing system and the testing precision are improved; an encoder is installed on the hollow driving assembly, steering angle data of the steering wheel can be recorded, and data can be transferred in the testing process to achieve reinjection and visual operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to whole vehicle test technical field, concretely relates to a car steering system testing device. BACKGROUND

[0002] In the whole vehicle test process, the steering system of the vehicle needs to be tested for control stability, but the driver's control operation on the steering wheel is uncertain and non-reproducible, so the test results often have large errors.

[0003] Nowadays, the test accuracy can be improved by installing an adjusting test system on the steering wheel and driving the steering wheel to move for testing through system driving. This method requires the corresponding installation mechanism on the test system to be completely centered with the steering wheel to ensure that the torque received by the steering wheel during rotation can be accurately detected by the test system. However, because the steering wheel has a certain softness, the existing installation mechanism and the steering wheel often cannot be effectively centered, or a long time is needed to achieve accurate centering, affecting work efficiency.

[0004] When measuring the force on the steering wheel, two connecting rods are provided on the steering wheel or the adapter tool installed on the steering wheel, and a tension and compression force sensor is provided on the two connecting rods to measure and calculate the force on the steering wheel. This method requires a lot of time to install and calibrate the tension and compression force sensor at the beginning, affecting work efficiency.

[0005] In addition, when repeated testing is required, the steering data and other test data obtained by testing the steering wheel often cannot be effectively observed and saved, resulting in poor test results. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model provides a car steering system testing device, which comprises:

[0007] A steering wheel clamping mechanism, the steering wheel clamping mechanism comprises a clamping assembly, and the clamping assembly can be fixedly installed on the steering wheel.

[0008] A centering tool, comprising a centering plate, the centering plate is detachably installed on the clamping assembly, and the installation position of the centering plate on the clamping assembly is adjustable along a first direction and a second direction, the first direction intersects the second direction, the plane where the first direction and the second direction are perpendicular to the axial direction of the steering wheel, and the centering tool is used for testing and adjusting the coaxiality of the centering plate and the steering wheel.

[0009] The steering fixing mechanism is used for testing the steering system performance of the steering wheel, and comprises a hollow driving assembly and a measuring assembly. A test rotor of a steering motor on the hollow driving assembly can be mounted on a centering plate or replace the centering plate and be mounted on the same position on the clamping assembly after the centering plate is removed from the clamping assembly.

[0010] The measuring assembly comprises a measuring plate and two connecting rods. The measuring plate is fixedly connected with a torque sensor. First ends of the two connecting rods are respectively mounted on opposite ends of the hollow driving assembly. Second ends of the two connecting rods are respectively mounted on opposite ends of the measuring plate. When the steering wheel rotates, the connecting rods can transmit the torque received by the hollow driving assembly to the measuring plate and the torque sensor.

[0011] A leveling tool is arranged between the hollow driving assembly and the measuring plate. Two ends of the leveling tool are respectively mounted on the hollow driving assembly and the measuring plate. The leveling tool is used for adjusting the relative positions of the hollow driving assembly and the measuring plate, so that the two connecting rods are in the same plane.

[0012] An encoder and an encoder battery are mounted on the hollow driving assembly, and are used for recording the steering angle data of the steering wheel during the test.

[0013] Preferably, connecting ears are arranged on radially opposite ends of the hollow driving assembly. Opposite ends of the measuring plate are provided with shaft mounting holes. The distance between the two shaft mounting holes is the same as the distance between the two connecting ears. First ends of the two connecting rods are respectively mounted on the two connecting ears. Second ends of the two connecting rods are respectively mounted on the two shaft mounting holes.

[0014] Preferably, the steering wheel clamping mechanism further comprises an adjusting plate mounted on the clamping assembly. The mounting position of the adjusting plate on the clamping assembly is adjustable in a first direction. A guide mounting block is arranged on the adjusting plate. The position of the guide mounting block on the adjusting plate is adjustable in a second direction. The test rotor of the hollow driving assembly and the centering plate have mounting surfaces with the same structure. The guide mounting block is used for limiting the mounting of the mounting surfaces.

[0015] Preferably, a first groove extending in the first direction and a second groove extending in the second direction are formed in the adjusting plate. A limiting sliding table is arranged on the clamping assembly corresponding to the first groove. The limiting sliding table can slide along the first groove.

[0016] The guide mounting block can slide in the second groove.

[0017] Preferably, the clamping assembly further comprises a mounting plate, a plurality of clamping structures are arranged on the mounting plate in a circumferential direction, the clamping structure comprises a first clamping jaw and a second clamping jaw, the first clamping jaw is mounted on the mounting plate, and the position of the first clamping jaw on the mounting plate is adjustable in a radial direction, the second clamping jaw is rotatably connected to the first clamping jaw through a rotating shaft, and when the second clamping jaw is rotated to approach the first clamping jaw, the second clamping jaw and the first clamping jaw can clamp the steering wheel.

[0018] Preferably, the first clamping jaw and the second clamping jaw are rotatably provided with a first adjusting locking shaft and a second adjusting locking shaft respectively, adjusting holes are formed at corresponding positions of the two adjusting locking shafts, and the adjusting holes are used for mounting adjusting locking screws.

[0019] Preferably, the first clamping jaw, the second clamping jaw and the mounting plate are all provided with strap hole positions for the installation of straps.

[0020] Preferably, the centering plate is provided with a centering reference, the centering tool comprises a measuring head, and the measuring head is provided with a measuring point on the centering reference; when the steering wheel is rotated, the measuring point and the centering reference have at least a first relative position and a second relative position, and the centering state of the centering plate and the steering wheel is judged based on the first relative position and the second relative position.

[0021] Preferably, the mounting mechanism is provided with a mounting seat, a reference part of the mounting mechanism is movably mounted on a seat rail of a vehicle in a third direction, the third direction is an extension direction of the seat rail, and the position of the mounting seat is adjustable relative to the reference part in a fourth direction and a fifth direction, and the third direction, the fourth direction and the fifth direction are perpendicular to each other.

[0022] By applying the technical scheme provided by the utility model, the clamping assembly can be fixedly installed on the steering wheel, the mounting position of the centering plate of the centering tool on the clamping assembly is adjustable, the centering tool is used for correcting and adjusting the relative position of the centering plate and the steering wheel, after the centering plate and the steering wheel are adjusted, the hollow driving assembly of the steering fixing mechanism is directly and centrally installed on the centering plate, or after the centering plate is removed from the clamping assembly, the hollow driving assembly is replaced and installed at the same mounting position of the centering plate, that is, the central installation of the hollow driving assembly and the steering wheel can be ensured, the process of centrally installing the hollow driving assembly on the steering wheel is more simple, and the accuracy after installation can be ensured.

[0023] The hollow driving assembly is connected with a measuring assembly, the measuring assembly comprises a connecting rod, a measuring plate and a torque sensor, when the steering wheel rotates, the connecting rod can transmit the torque received by the hollow driving assembly to the measuring plate and the torque sensor, that is, the torque received by the steering wheel can be directly measured by the torque sensor, in the installation process of the test system, the torque sensor is more convenient to calibrate, and in the subsequent test process, the torque sensor can intuitively reflect the stress of the steering wheel, which is more convenient to use;

[0024] A leveling tool is further arranged between the measuring plate and the hollow driving assembly, which is used for adjusting the relative position of the measuring plate and the hollow driving assembly, so as to ensure that the two connecting rods are in the same plane, thereby improving the installation efficiency of the test system and the accuracy in the subsequent test;

[0025] An encoder and an encoder battery are installed on the hollow driving assembly, which can record the steering angle data of the steering wheel, so that the test process can store data to realize the back-annotation and visualization operation, which is more convenient to test. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of a steering wheel clamping mechanism and a steering fixing mechanism of the automobile steering system test device provided by the embodiment of the utility model;

[0027] Figure 2 is a structure schematic view of a hollow driving assembly of the automobile steering system test device provided by the embodiment of the utility model;

[0028] Figure 3 is a structure schematic view of a clamping assembly and a centering tool of the automobile steering system test device provided by the embodiment of the utility model in cooperation;

[0029] Figure 4 is a structure schematic view of a leveling tool of the automobile steering system test device provided by the embodiment of the utility model;

[0030] Figure 5 is a structure schematic view of a connecting rod of the automobile steering system test device provided by the embodiment of the utility model;

[0031] Figure 6 is a whole structure schematic view of the automobile steering system test device provided by the embodiment of the utility model;

[0032] Figure 7 is a structure schematic view of an adjusting plate of the automobile steering system test device provided by the embodiment of the utility model;

[0033] Figure 8 is a cooperation schematic view of the adjusting plate and the clamping assembly of the automobile steering system test device provided by the embodiment of the utility model;

[0034] Figure 9 is a structure schematic view of the clamping assembly of the automobile steering system testing device provided by the embodiment of the utility model;

[0035] Figure 10 is a structure schematic view of the clamping structure of the automobile steering system testing device provided by the embodiment of the utility model;

[0036] Figure 11 is a structure schematic view of another view of the clamping structure of the automobile steering system testing device provided by the embodiment of the utility model;

[0037] Figure 12 is a structure schematic view of the mounting mechanism of the automobile steering system testing device provided by the embodiment of the utility model;

[0038] Figure 13 is a structure schematic view of the reference part of the automobile steering system testing device provided by the embodiment of the utility model;

[0039] Figure 14 is a structure schematic view of the centering tool of the automobile steering system testing device provided by the embodiment of the utility model;

[0040] Among them,

[0041] 1, steering wheel;

[0042] 2, steering wheel clamping mechanism; 21, clamping assembly; 211, clamping structure; 2111, first clamping jaw; 2112, second clamping jaw; 2113, clamping jaw connecting plate; 2114, rotating shaft; 2115, first adjusting locking shaft; 2116, second adjusting locking shaft; 2117, locking screw; 2118, bandage; 212, mounting plate; 2121, limiting sliding table; 2122, locking screw; 213, adjusting plate; 2131, first groove body; 2132, second groove body; 2133, guide mounting block;

[0043] 3, centering tool; 31, centering plate; 32, measuring head; 33, universal adjusting rod; 34, negative pressure suction disc;

[0044] 4, steering fixing mechanism; 41, hollow drive assembly; 411, first connecting lug; 412, second connecting lug; 413, encoder battery; 42, measuring assembly; 421, connecting rod; 422, measuring plate; 423, leveling tool; 424, torque sensor;

[0045] 5, mounting mechanism; 51, mounting seat; 52, position adjusting assembly; 53, reference part; 531, fixed arm; 532, fixed panel; 533, bidirectional screw; 534, first connecting arm; 535, second connecting arm. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0047] Figure 1 It is the structural schematic view of the steering fixed mechanism and the steering wheel clamping mechanism of the automobile steering system testing device provided by the embodiments of the utility model; Figure 2 It is the structural schematic view of the hollow drive assembly of the automobile steering system testing device provided by the embodiments of the utility model; Figure 3 It is the structural schematic view of the clamping assembly and the centering tool in cooperation of the automobile steering system testing device provided by the embodiments of the utility model; Figure 4 It is the structural schematic view of the leveling tool of the automobile steering system testing device provided by the embodiments of the utility model; Figure 5 It is the structural schematic view of the connecting rod of the automobile steering system testing device provided by the embodiments of the utility model; Figure 6 It is the overall structural schematic view of the automobile steering system testing device provided by the embodiments of the utility model.

[0048] As shown in Figures 1 to 6 The utility model embodiments provide an automobile steering system testing device for testing the steering stability of the steering wheel 1, comprising a steering wheel clamping mechanism 2, a centering tool 3 and a steering fixed mechanism 4, the steering wheel clamping mechanism 2 comprises a clamping assembly 21, and the clamping assembly 21 can be fixedly installed on the steering wheel 1;

[0049] The centering tool 3 comprises a centering plate 31, the centering plate 31 is detachably installed on the clamping assembly 21, and the installation position of the centering plate 31 on the clamping assembly 21 is adjustable along a first direction and a second direction, the first direction intersects with the second direction, and the plane where the first direction and the second direction are perpendicular to the axis of the steering wheel 1, it is easy to understand that the first direction can be the left-right direction of the steering wheel 1 disc body, and the second direction can be the front-rear direction of the steering wheel 1 disc body; the centering tool 3 is used for testing and adjusting the coaxiality of the centering plate 31 and the steering wheel 1;

[0050] The steering fixing mechanism 4 is used for testing the steering system performance of the steering wheel 1, and the steering fixing mechanism 4 comprises a hollow driving assembly 41 and a measuring assembly 42. After alignment, the test rotor (not shown in the figure) of the steering motor on the hollow driving assembly 41 is installed in the alignment plate 31, or the alignment plate 31 is removed from the clamping assembly 21 and the test rotor of the hollow driving assembly 41 is installed in the same position of the alignment plate 31. At this time, the alignment state of the test rotor of the hollow driving assembly 41 and the steering wheel 1 can be ensured, the accuracy of subsequent testing can be ensured, and the whole installation process is more convenient and fast.

[0051] When the hollow driving assembly 41 is installed on the alignment plate 31, or when the hollow driving assembly is installed on the clamping assembly 21 after the alignment plate 31 is removed, some existing designs can be used to ensure the alignment installation. In summary, in the pre-alignment calibration process, the alignment of the alignment plate 31 and the steering wheel 1 has been determined, and some existing positioning installation methods can be used when the hollow driving assembly 41 is installed subsequently. Here, no further description is given.

[0052] As shown in Figure 1 , Figure 4 and Figure 5 , the measuring assembly 42 comprises a measuring plate 422 and two connecting rods 421. The measuring plate 422 is fixedly installed on a torque sensor 424. The first ends of the two connecting rods 421 are respectively installed on the radially opposite ends of the hollow driving assembly 41 (such as the first connecting lug 411 and the second connecting lug 412 shown in Figure 2 ). The second ends of the two connecting rods 421 are respectively installed on the opposite ends of the measuring plate 422.

[0053] As shown in Figure 1 , the connecting lines between the rod bodies of the two connecting rods 421 and their opposite ends (i.e. the connecting line between the first connecting lug 411 and the second connecting lug 412 of the hollow driving assembly 41, and the two lines on the two ends of the measuring plate 422) form a rectangle. When the steering wheel 1 rotates, the torque received by the steering wheel 1 is transmitted to the torque sensor 424 through the hollow driving assembly 41, the connecting rods 421 and the measuring plate 422. In the actual installation and debugging process, after the measuring assembly 42 and the hollow driving assembly 41 are installed, the steering wheel 1 needs to output a certain torque value, and the reading of the torque sensor 424 is observed to determine whether the detection of the torque sensor is accurate in combination with the above-mentioned torque value. By setting the torque sensor 424, the torque received by the steering wheel 1 can be directly measured, which is more convenient and fast in the installation and debugging process.

[0054] The measuring assembly 42 also includes a leveling fixture 423, which is installed on two corresponding surfaces of the hollow drive assembly 41 and the measuring plate 422. The leveling fixture 423 restricts the two corresponding surfaces to be parallel by its own plane, so as to ensure that the first end and the second end of the two connecting rods 421 are in the same plane. That is, the leveling fixture 423 ensures that the rod body of the two connecting rods 421 and the connecting line between their opposite ends (that is, the connecting line between the first connecting ear 411 and the second connecting ear 412 of the hollow drive assembly 41, and the two lines at both ends on the measuring plate 422) can form a rectangle in a plane, thereby ensuring the accuracy of the torque sensor 424 measurement.

[0055] It should be noted that the leveling fixture 423 is only used to assist in the installation of the hollow drive assembly 41 and the measuring board 422, in order to improve installation efficiency and the efficiency of adjusting the torque sensor 424. After the torque sensor 424 has been adjusted, the leveling fixture 423 between the hollow drive assembly 41 and the measuring board 422 needs to be removed to avoid the leveling fixture 423 affecting subsequent testing; in addition, Figure 1 and Figure 4 In the embodiment shown, the leveling fixture 423 is a leveling plate. In some other embodiments, the leveling fixture 423 may also be other structures, as long as it can adjust the parallelism of the hollow drive assembly 41 and the measuring plate 422, and ensure that the rods of the two connecting rods 421 and the line connecting their opposite ends can form a rectangle in a plane. This will not be elaborated here.

[0056] In addition, Figure 1 In the illustrated embodiment, the hollow drive assembly 41 has a first connecting lug 411 and a second connecting lug 412 at opposite ends along the radial direction. The measuring plate 422 has shaft mounting holes at opposite ends. The distance between the two shaft mounting holes is the same as the distance between the two connecting lugs. The first ends of the two connecting rods 421 are respectively mounted on the two connecting lugs, and the second ends of the two connecting rods are respectively mounted on the two shaft mounting holes, thereby connecting the measuring plate 422 and the hollow drive assembly 41. In some other embodiments, the connecting rods 421 can also be connected to the measuring plate 422 and the hollow drive assembly 41 in other ways, as long as the connecting rods 421 can transmit the torque at the steering wheel 1 and the hollow drive assembly 41 to the measuring plate 422 and the torque sensor 424. This will not be elaborated here.

[0057] The hollow driving assembly 41 is further provided with an encoder (not shown in the figure) and an encoder battery 413, both of which are installed in the mounting groove inside the hollow driving assembly, and the encoder battery 413 directly supplies independent power to the encoder through a JST PH2.0 specification plug, so as to ensure that the encoder can work normally. The encoder is used for recording the steering angle data of the steering wheel during the test process, and through the inductive sensing principle, the rotation angle of the steering wheel is collected in a non-contact mode, the position change of the steering wheel is fed back in real time, so that the rotation and pose change of the steering wheel can be accurately monitored during the test process, and after the test is completed once, the rotation data of the steering wheel during the test can be output and stored in the encoder, so that the test process can be realized through the stored data. The back-annotation and visualization operation.

[0058] In addition, the steering motor of the hollow driving assembly 41 also has the function of assisting steering. Since there is great uncertainty in the functions of various components of the test vehicle, the original steering assist system of part of the vehicle often fails during actual testing. At this time, the tester may not be able to apply enough force to the hollow driving assembly 41 and the steering wheel during testing, and the Hall sensor of the steering motor can confirm the direction of the artificial rotation. Under the driving of the external steering controller, the steering motor can assist the artificial steering as a steering assist. In addition, in some test processes, a large force needs to be applied to the steering wheel to perform a specific test. At this time, the steering motor can also assist steering to improve the convenience of testing.

[0059] Figure 7 is a structural schematic view of the adjusting plate of the automobile steering system test device provided by the embodiment of the utility model; Figure 8 is a cooperation schematic view of the adjusting plate and the clamping assembly of the automobile steering system test device provided by the embodiment of the utility model; Figure 9 is a structural schematic view of the clamping assembly of the automobile steering system test device provided by the embodiment of the utility model; Figure 10 is a structural schematic view of the clamping structure of the automobile steering system test device provided by the embodiment of the utility model; Figure 11 is a structural schematic view of the clamping structure of the automobile steering system test device provided by the embodiment of the utility model from another perspective.

[0060] As Figure 7 , Figure 8 and Figure 9As shown, in one preferred embodiment, the clamping assembly 21 includes a mounting plate 212, and the steering wheel clamping mechanism 2 further includes an adjusting plate 213 mounted on the mounting plate 212. The mounting position of the adjusting plate 213 on the clamping assembly 21 is adjustable along a first direction. A guide mounting block 2133 is provided on the adjusting plate 213. The position of the guide mounting block 2133 on the adjusting plate 213 is adjustable along a second direction. The centering plate 31 and the test rotor of the hollow drive assembly 41 have identical mounting surfaces. The guide mounting block 2133 is used to limit the mounting surface.

[0061] In this way, during the alignment and debugging of the center plate 31 and the steering wheel 1, the position of the center plate 31 can be adjusted by adjusting the position of the adjusting plate 213 on the clamping assembly 21 along the first direction and the position of the guide mounting block 2133 on the adjusting plate 213 along the second direction. After the adjustment is completed, the adjusting plate 213 and the guide mounting block 2133 are kept in a fixed state. After the center plate 31 is removed, the mounting surface of the test rotor of the hollow drive assembly 41 is installed on the guide mounting block 2133, thus realizing the alignment and installation of the test rotor of the hollow drive assembly 41 and the steering wheel 1. This makes the entire alignment and debugging process simpler and improves the efficiency of alignment and installation.

[0062] Furthermore, such as Figure 7 and Figure 8 As shown, in one preferred embodiment, the adjusting plate 213 has a first groove 2131 extending in a first direction and a second groove 2132 extending in a second direction. The mounting plate 212 is provided with a limiting slide 2121. A locking screw 2122 is also provided between the clamping assembly 21 and the adjusting plate 213. The limiting slide 2121 has a threaded hole for installing the locking screw 2122. By loosening the locking screw 2122, the limiting slide 2121 can be positioned within the first groove 2131. The adjusting plate 213 can slide within the second groove 2132, meaning that the position of the adjusting plate 213 relative to the mounting plate 212 is adjustable in the first direction. By tightening the locking screw 2122, the locking screw 2122 presses the adjusting plate 213 onto the mounting plate 212, and the adjusting plate 213 and the mounting plate 212 are locked to each other in the first direction. The guide mounting block 2133 can slide within the second groove 2132, so that the guide mounting block 2133 can adjust its position on the adjusting plate 213 in the second direction by cooperating with the second groove 2132.

[0063] It should be noted that the above embodiments are only preferred embodiments. In some other application scenarios, the adjustment of the relative position of the adjusting plate 213 and the clamping assembly 21, as well as the adjustment of the relative position of the guide mounting block 2133 and the adjusting plate 213, can also be achieved in other ways, which will not be elaborated here.

[0064] likeFigure 9 , Figure 10 and Figure 11 As shown, in one preferred embodiment, a plurality of clamping structures 211 are provided circumferentially on the mounting plate 212. Each clamping structure 211 includes a first clamping claw 2111 and a second clamping claw 2112. The second clamping claw 2112 is hinged to the first clamping claw 2111 via a rotating shaft 2114. When the second clamping claw 2112 rotates toward the first clamping claw 2111, the second clamping claw 2111 and the second clamping claw 2112 can clamp onto the steering wheel 1. The clamping assembly 21 is clamped onto multiple positions along the circumference of the steering wheel 1 by a plurality of clamping claws, which can ensure the stability of the installation of the clamping assembly 21 and the steering wheel 1, and provide a guarantee for the accuracy of subsequent centering adjustment and testing.

[0065] Furthermore, such as Figure 9 and Figure 10 As shown, the first claw 2111 is connected to the mounting plate 212 via the claw connecting plate 2113. The claw connecting plate 2113 has multiple mounting holes along the radial direction of the steering wheel 1. Each mounting hole can be connected to the mounting plate 212, thus changing the mounting position of the claw connecting plate 2113 on the mounting plate 212, making the clamping mechanism suitable for various steering wheel 1 specifications.

[0066] like Figure 10 As shown, in one preferred embodiment, a first adjusting locking shaft 2115 and a second adjusting locking shaft 2116 are rotatably provided on the first jaw 2111 and the second jaw 2112, respectively. Adjusting holes are provided on both the first adjusting locking shaft 2115 and the second adjusting locking shaft 2116, and adjusting locking screws 2117 are installed in the adjusting holes. The adjusting locking screws 2117 can adjust the distance between the first adjusting locking shaft 2115 and the second adjusting locking shaft 2116, that is, adjust the distance between the first jaw 2111 and the second jaw 2112. After tightening the adjusting locking screws 2117, a cotter pin can be installed at its end to ensure that the adjusting locking screws 2117 will not loosen automatically. By adjusting the setting of the locking screws 2117, the distance between the jaws is changed, so that the clamping structure can be firmly clamped on the steering wheel, ensuring the stability of the installation of the clamping assembly 21 and the steering wheel 1, and providing a guarantee for the accuracy of subsequent centering adjustments and testing.

[0067] like Figure 11As shown, in one of the preferred embodiments, a strap hole can also be provided on the first jaw 2111, the second jaw 2112 and the mounting plate 212 for threading in a strap 2118. In some new vehicle models, the steering wheel used is a half-width steering wheel, and the positions where the jaws can be connected to the steering wheel are limited. It is difficult to stably fix the clamping assembly 21 to the steering wheel through the existing jaw structure. At this time, the strap 2118 can be provided to bind the clamping assembly 21 and the steering wheel together, so that the clamping assembly 21 can be stably mounted on the steering wheel, facilitating subsequent adjustment and testing.

[0068] The strap 2118 can be arranged between the jaw and the steering wheel. In some use scenarios, the clamping structure of the clamping assembly 21 can also be removed, and the mounting plate 212 of the clamping assembly 21 can be directly bound to the steering wheel. The specific use mode of the strap 2118 can be adjusted according to the actual structure of the steering wheel applied. The specific material of the strap 2118 can be a nylon strap or a metal wire, and details are not described herein.

[0069] Figure 12 FIG. 1 is a structural schematic diagram of an installation mechanism of an automobile steering system testing device provided by an embodiment of the present application; Figure 13 FIG. 2 is a structural schematic diagram of a reference part of an automobile steering system testing device provided by an embodiment of the present application.

[0070] As shown in Figure 5 , Figure 12 and Figure 13 shown, the steering wheel testing system provided by the embodiment of the present application further includes an installation mechanism 5, the installation mechanism 5 includes a mounting seat 51, and the measurement plate 422 and the torque sensor 424 described above are mounted on the mounting seat 51. The reference part 53 of the installation mechanism 5 is movably mounted on the seat rail of the vehicle along a third direction, and the third direction is the extension direction of the seat rail. The connection and cooperation mode of the reference part 53 and the seat rail can refer to the principle of the seat moving forward and backward along the rail in the existing vehicle, and details are not described herein. A position adjusting assembly 52 is arranged between the mounting seat 51 and the reference part 53, so that the position of the mounting seat 51 relative to the reference part 53 is adjustable along a fourth direction and a fifth direction, and the third direction, the fourth direction and the fifth direction are perpendicular to each other. As can be easily understood, the third direction is the front-rear direction of the vehicle, and the fourth direction and the fifth direction are the left-right direction and the up-down direction of the vehicle, respectively.

[0071] Through the arrangement of the installation mechanism 5, the positions of the torque sensor 424 and the measurement plate 422 in the vehicle body space are flexibly adjustable, so that the measurement assembly 42 mounted thereon can maintain appropriate positions with the hollow driving assembly 41 and the steering wheel 1, and can be suitable for various vehicle models.

[0072] In Figure 12In the shown embodiment, the position adjusting assembly 52 comprises two support rods connected by a cross and a cross connecting frame, both of the support rods are capable of moving along their axial direction relative to the cross connecting frame, the reference part 53 is fixedly connected with one of the support rods, the mounting seat 51 is mounted on the other support rod, and the mounting seat 51 is capable of rotating around the circumferential direction of the support rod, since the included angle between the steering wheel and the horizontal plane can be different due to different vehicle models, the mounting seat 51 is arranged to be rotatable, and the use of the leveling tool 423 can ensure that the mounting seat 51 and the measuring plate 422 are arranged in parallel with the steering wheel 1. In the embodiment, the specific connection mode of the support rods and the cross connecting frame can refer to the scaffold structure in the building construction, which will not be described herein. In addition, in some other embodiments, the position adjusting assembly 52 can also adopt other structures, as long as the position of the mounting seat 51 in the vehicle can be adjusted.

[0073] As shown in Figure 13 , the reference part 53 comprises two fixed arms 531 and a fixed panel 532, the fixed arms 531 are L-shaped, the horizontal parts of the two fixed arms 531 are connected with the guide rails on both sides of the seat respectively, and the vertical parts are used for fixing the fixed panel 532, and the fixed panel 532 is used for mounting the position adjusting assembly 52, so as to realize the mounting of the mounting mechanism 5 and the seat guide rail.

[0074] A first connecting arm 534, a second connecting arm 535 and a bidirectional screw rod 533 are further arranged between the two fixed arms 531, as shown in Figure 13 , both ends of the first connecting arm 534 and both ends of the second connecting arm 535 are hingedly connected to the two fixed arms 531 respectively, and the middle parts of the first connecting arm 534 and the second connecting arm 535 are provided with threaded holes matched with the bidirectional screw rod 533, so that when the bidirectional screw rod 533 rotates, the first connecting arm 534 and the second connecting arm 535 are close to or away from each other, thereby driving the two fixed arms 531 to be close to or away from each other. In different vehicle models, the size of the seat is different, and the distance between the guide rails on both sides of the seat is also different, and by arranging the two fixed arms 531 to be close to or away from each other, the seat guide rails of various vehicle models can be mounted, thereby improving the applicability.

[0075] Figure 14 is a structural schematic view of the centering tool of the automobile steering system testing device provided by the embodiment of the utility model.

[0076] As shown in Figure 3 and Figure 14As shown, the centering tool 3 further comprises a measuring head 32, and the centering plate 31 is provided with a centering reference, and the measuring point of the measuring head 32 falls on the centering reference. After the clamping assembly 21 and the centering plate 31 are installed on the steering wheel 1, the steering wheel 1 is rotated, so that the centering plate 31 also rotates around the axis of the steering wheel 1. At this time, the measuring point and the centering reference at least have a first relative position and a second relative position. The centering state of the centering reference and the steering wheel 1 can be determined through the first relative position and the second relative position, and corresponding adjustment can be performed to realize the centering of the centering plate 31 and the steering wheel 1.

[0077] In Figure 3 In the embodiment shown, the centering reference is a coordinate system provided on the centering plate 31. The coordinate system comprises coordinate axes that pass through the axis of the centering plate 31 and take the axis of the centering plate 31 as the origin. When the steering wheel is rotated, the change in the coordinate values of the measuring point on different coordinate axes can reflect the centering state of the centering plate 31 and the rotation axis of the steering wheel 1.

[0078] As can be easily understood, the coordinate value of the measuring point on the coordinate axis is the distance between the measuring point and the axis of the centering plate 31. When the steering wheel 1 is rotated, if the coordinate values of the measuring point on multiple coordinate axes do not change, it indicates that the position of the axis of the centering plate 31 does not change when the steering wheel 1 is rotated. That is, when the centering plate 31 rotates with the steering wheel 1, the centering plate 31 also rotates around its own axis. Therefore, the axis of the centering plate 31 coincides with the rotation axis of the steering wheel 1. If the coordinate values of the measuring point change, it indicates that when the centering plate 31 rotates with the steering wheel 1, the centering plate 31 rotates around an axis other than its own axis (i.e., the axis of the steering wheel at this time). That is, the centering plate 31 is not centered with the steering wheel 1. The installation position of the centering plate 31 on the clamping assembly 21 can be adjusted accordingly according to the change in the coordinate values. The above operation is repeated until the centering plate 31 is centered with the steering wheel 1.

[0079] The measuring head 32 is installed in the vehicle through a universal adjusting rod 33. That is, the spatial position of the measuring head 32 in the vehicle is adjustable. Since the positions and sizes of steering wheels of different vehicle models are different, the corresponding structures such as the clamping assembly 21 also need to be adjusted accordingly. The position of the centering plate 31 after being installed on the steering wheel 1 is also different. By adjusting the spatial position of the measuring head 32 in the vehicle, the measuring point of the measuring head 32 can always cooperate with the centering plate 31 smoothly, thereby improving the applicability.

[0080] As Figure 13 shown, the universal adjusting rod 33 comprises a plurality of sequentially hinged connecting rods, so that the measuring head 32 can move in multiple degrees of freedom. In some embodiments, locking structures such as locking screws can be provided at the hinged portions of the connecting rods. When the position of the measuring head 32 is adjusted to the right position, the locking screws lock the relative movement of the connecting rod parts, so that the position of the measuring head 32 is fixed, ensuring that the position of the measuring head 32 does not change during the centering adjustment, thereby improving the accuracy of the centering adjustment.

[0081] Further, the centering tool 3 further comprises a negative pressure suction cup 34, which can be adsorbed on the position such as the window or the center console of the vehicle, and the universal adjusting rod 33 is installed on the vehicle body through the negative pressure suction cup 34, on the one hand, the centering tool 3 can be installed at multiple positions in the vehicle, and the position of the centering tool 3 can be flexibly adjusted during actual use, on the other hand, since the centering tool 3 is no longer used in the subsequent test process of the steering wheel 1 after completing the calibration of the centering plate 31 and the steering wheel 1, the centering tool 3 can be conveniently disassembled from the vehicle, and the convenience of use is improved.

[0082] It should be noted that the probe 32 can be a pen-shaped structure as shown in the figure, and the tip of the pen falls on the centering plate 31, and can also be some other elements with identification function, for example, an infrared emitter, and the light spot of the infrared emitter falls on the centering plate 31, when the steering wheel 1 is rotated, the centering state of the centering plate 31 and the steering wheel 1 is judged and adjusted by observing the cooperation state change of the light spot and the centering reference. Figure 3 The centering reference on the centering plate 31 can be a coordinate system structure as described above, and other structures can also be used, as long as the centering of the centering plate 31 and the steering wheel 1 can be realized. Figure 3

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.​

Claims

1. An automotive steering system testing apparatus characterized by comprising: The utility model relates to a steering wheel test device, comprising: a steering wheel clamping mechanism, the steering wheel clamping mechanism comprises a clamping assembly, the clamping assembly can be fixedly installed on the steering wheel; a centering tool, the centering tool comprises a centering plate, the centering plate is detachably installed on the clamping assembly, and the mounting position of the centering plate on the clamping assembly is adjustable along a first direction and a second direction, the first direction intersects the second direction, the plane where the first direction and the second direction are located is perpendicular to the axial direction of the steering wheel, and the centering tool is used for testing and adjusting the coaxiality of the centering plate and the steering wheel; a steering fixing mechanism for testing the steering system performance of the steering wheel, the steering fixing mechanism comprises a hollow drive assembly and a measuring assembly, a test rotor of a steering motor on the hollow drive assembly can be centrally installed on the centering plate, or when the centering plate is detached from the clamping assembly, the test rotor can replace the centering plate and be installed on the same position on the clamping assembly; the measuring assembly comprises a measuring plate and two connecting rods, the measuring plate is fixedly connected with a torque sensor, the first ends of the two connecting rods are respectively installed on the opposite ends of the hollow drive assembly, and the second ends of the two connecting rods are respectively installed on the opposite ends of the measuring plate; when the steering wheel rotates, the connecting rods can transmit the torque received by the hollow drive assembly to the measuring plate and the torque sensor; a leveling tool is arranged between the hollow drive assembly and the measuring plate, the two ends of the leveling tool are respectively installed on the hollow drive assembly and the measuring plate, and the leveling tool is used for adjusting the relative positions of the hollow drive assembly and the measuring plate so that the two connecting rods are in the same plane; an encoder and an encoder battery are installed on the hollow drive assembly and are used for recording the steering angle data of the steering wheel during the test.

2. The automotive steering system testing apparatus according to claim 1, wherein opposite ends of the hollow drive assembly are provided with connecting ears, opposite ends of the measuring plate are provided with shaft mounting holes, the distance between the two shaft mounting holes is the same as the distance between the two connecting ears, the first ends of the two connecting rods are respectively installed on the two connecting ears, and the second ends of the two connecting rods are respectively installed on the two shaft mounting holes.

3. The automotive steering system testing apparatus according to claim 1, wherein The steering wheel clamping mechanism further comprises an adjusting plate installed on the clamping assembly, the mounting position of the adjusting plate on the clamping assembly is adjustable along a first direction, a guide mounting block is arranged on the adjusting plate, the position of the guide mounting block on the adjusting plate is adjustable along a second direction, the test rotor of the hollow drive assembly and the centering plate have the same structure of the mounting surface, and the guide mounting block is used for limiting the mounting of the mounting surface.

4. The automotive steering system testing apparatus according to claim 3, wherein The adjusting plate is provided with a first groove extending along the first direction and a second groove extending along the second direction, a limiting sliding table is arranged at the position corresponding to the first groove on the clamping assembly, and the limiting sliding table can slide along the first groove. The guide mounting block can slide in the second groove.

5. The automotive steering system testing apparatus of claim 1, wherein The clamping assembly further comprises a mounting plate, a plurality of clamping structures are arranged on the mounting plate in a circumferential direction, the clamping structure comprises a first clamping jaw and a second clamping jaw, the first clamping jaw is mounted on the mounting plate, and the position of the first clamping jaw on the mounting plate is adjustable in a radial direction, the second clamping jaw is rotatably connected to the first clamping jaw through a rotating shaft, and the second clamping jaw and the first clamping jaw can clamp the steering wheel when the second clamping jaw rotates to approach the first clamping jaw.

6. The automotive steering system testing apparatus according to claim 5, wherein The first clamping jaw and the second clamping jaw are respectively rotatably provided with a first adjusting locking shaft and a second adjusting locking shaft, adjusting holes are formed at corresponding positions of the two adjusting locking shafts, the adjusting holes are used for mounting adjusting locking screws, and the adjusting locking screws are used for adjusting the distance between the first adjusting locking shaft and the second adjusting locking shaft.

7. The automotive steering system testing apparatus according to claim 5, wherein The first clamping jaw, the second clamping jaw and the mounting plate are all provided with belt hole positions for the installation of a belt.

8. The automotive steering system testing apparatus of claim 1, wherein The centering plate is provided with a centering reference, the centering tool comprises a measuring head, and the measuring head is provided with a measuring point on the centering reference; when the steering wheel is rotated, the measuring point and the centering reference have at least a first relative position and a second relative position, and the centering state of the centering plate and the steering wheel is determined based on the first relative position and the second relative position.

9. The automotive steering system testing apparatus of claim 1, wherein Further comprising a mounting mechanism, the mounting mechanism is provided with a mounting seat, a reference part of the mounting mechanism is movably mounted on a seat rail of a vehicle in a third direction, the third direction is an extension direction of the seat rail; the position of the mounting seat is adjustable relative to the reference part in a fourth direction and a fifth direction, and the third direction, the fourth direction and the fifth direction are perpendicular to each other.

Images