Torsion test clamp for steering wheel rim

Abstract

The utility model discloses a steering wheel rim torsion test fixture which comprises a support frame and at least two clamping structures, the clamping structures are arranged in a central symmetry mode, one end of each clamping structure is detachably installed on the support frame, and the other end of each clamping structure can abut against a steering wheel rim and is used for clamping and fixing the steering wheel rim. The connecting structure is mounted on one of the clamping structures and is used for being connected with an external force application device so as to test the torsional strength of the steering wheel rim; through the clamping structure, the steering wheel rim is efficiently and stably clamped and fixed, the overall universality and adaptability of the clamp are improved, the working efficiency is high, the adaptability is high, and the connecting structure provides a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim; the accuracy and consistency of torque application in the test process are ensured, and the accuracy and repeatability of test data can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile performance test, especially a steering wheel rim torsion test fixture. BACKGROUND

[0002] In the rapid development of modern society, as an indispensable means of transportation, the automobile has been deeply integrated into people's daily life, greatly facilitating people's travel and logistics transportation, and with the continuous growth of automobile demand, its safety performance has become the focus of attention of the society, in the process of automobile driving, the steering wheel rim as the key component of the driver's steering intention to the automobile steering system, its performance stability and reliability are directly related to the driving safety, in the actual use process, due to long-term bearing complex mechanical environment and occasional extreme working condition challenge, such as emergency avoidance, high-speed turning and potential collision accident, the torsional strength problem of the steering wheel rim gradually highlights, becomes a potential major safety hazard, the steering wheel rim needs to be able to withstand the huge torque generated when the driver quickly and powerfully operates the steering wheel in an emergency, in this process, if the torsional strength of the rim is insufficient, plastic deformation of the rim and even fracture are easily caused, and then steering failure is caused, for the vehicle driving at high speed, it means that the driver will lose control of the vehicle driving direction instantly, greatly increasing the risk of vehicle out of control, rollover and even collision and other serious traffic accidents, therefore, improving the torsional strength of the steering wheel rim is not only the basic requirement for vehicle safety performance, but also the solemn promise to the life safety of the driver and passenger.

[0003] At present, in the torsional strength test of the steering wheel rim of the automobile, the mechanical environment under the extreme working condition is mainly simulated, the preset torque load is applied to the rim, and the deformation condition is observed and recorded until the breaking point, so as to provide a scientific basis for the quality of the rim and ensure that the steering wheel rim maintains excellent performance in the complex driving environment, however, the traditional torsional strength test device mainly adopts the fixed size clamping structure when testing the steering wheel rim of the automobile, has the defects of lack of flexibility and universality, small application range, increases the test cost and preparation time, and the traditional torsional strength test device cannot realize accurate control and stable transmission when applying the torque load, which easily leads to inaccurate and unreliable test results, and cannot truly reflect the torsional strength performance of the steering wheel rim under the extreme working condition. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a steering wheel rim torsion test fixture to solve the problems of poor flexibility and universality, inaccurate torque load application, poor stability and easy influence on the accuracy and reliability of test results in the torsional strength test of the steering wheel rim of the automobile in the prior art.

[0005] In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

[0006] A steering wheel rim torsion test fixture, comprising a support frame and at least two clamping structures, each of the clamping structures is centrally symmetrically arranged, and one end of each of the clamping structures is detachably mounted on the support frame, and the other end can abut against the steering wheel rim respectively, for clamping and fixing the steering wheel rim;

[0007] A connecting structure is mounted on one of the clamping structures, for connecting with an external force applying device, so as to test the torsional strength of the steering wheel rim.

[0008] According to the above technical means, through the at least two centrally symmetric clamping structures, efficient and stable clamping and fixing of the steering wheel rim are realized, not only the accurate positioning of the steering wheel rim in the test process is ensured, but also the universality and adaptability of the fixture as a whole are improved, so that it can adapt to the test requirements of steering wheel rims of different sizes and specifications, without frequent replacement of the fixture, thereby effectively reducing the test cost and shortening the test preparation time; and the clamping structure is detachably mounted on the support frame, which facilitates assembly and disassembly and provides great convenience for daily maintenance, improves the reliability and safety of the test; in addition, the connecting structure is connected with the external force applying device, which provides a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim, ensures the accuracy and consistency of the torque application in the test process, and helps to improve the accuracy and repeatability of the test data, providing strong technical support for the quality control of the steering wheel rim.

[0009] Further, the support frame comprises a movable rod and a U-shaped support, the U-shaped support is composed of a horizontal rod and two vertical rods, the two vertical rods are arranged in parallel with each other, and the two vertical rods are vertically fixed at both ends of the horizontal rod respectively; the movable rod is arranged in parallel with the horizontal rod, one end of the movable rod is detachably mounted on one of the vertical rods, and the other end of the movable rod is mounted on the other vertical rod through a locking structure, so as to form a closed frame structure, the frame structure can be sleeved on the steering wheel rim, and each clamping structure is evenly distributed along the circumference of the frame structure;

[0010] The locking structure is configured to lock or release the connecting rod, so that the frame structure remains closed to support each clamping structure in the locked state, or is opened to facilitate the placing or taking out of the steering wheel rim in the released state.

[0011] According to the above technical means, the frame-shaped structure formed by the movable rod and the U-shaped support can be sleeved on the steering wheel rim, ensuring stable contact between the clamping structures and the steering wheel rim during the test, improving the stability of the clamping structures, ensuring the accuracy of the test, and evenly distributing the clamping structures along the circumference of the frame-shaped structure, which not only ensures uniform distribution of clamping force, improves the clamping stability and reliability of the clamp on the steering wheel rim, enhances the versatility and adaptability of the clamp, and enables it to be more widely applied to different specifications and types of steering wheel rim torsional strength tests; Specifically, the U-shaped support is vertically fixed by a horizontal rod and two mutually parallel vertical rods, providing a solid support foundation for the entire clamp, and one end of the movable rod is detachably mounted on one vertical rod of the U-shaped support, and the other end is connected to the other vertical rod through the locking structure, so that the movable rod can be flexibly disassembled on the U-shaped support, and the locking structure can firmly lock the connecting rod, so that the frame-shaped structure remains closed with the U-shaped support in the locked state to form a closed frame-shaped structure, thereby stably supporting the clamping structures and ensuring smooth testing.

[0012] Further, the locking structure includes a mounting table, a locking screw rod and a locking nut, the mounting table is fixed on the side wall of the other vertical rod, one end of the locking screw rod is rotatably mounted on the mounting table through a rotating shaft, and the other end is threadedly connected with the locking nut, the other end of the movable rod is formed with a bayonet, the locking screw rod can be clamped in the bayonet, and the locking nut can abut against the movable rod.

[0013] According to the above technical means, the mounting table, the locking screw rod and the locking nut improve the convenience, refinement and reliability of the adjustment and installation of the movable rod, specifically, the mounting table is stably fixed on the side wall of the other vertical rod of the U-shaped support as the installation basis of the locking screw rod, and one end of the locking screw rod is rotatably mounted on the mounting table through a rotating shaft, realizing flexible angle adjustment; the other end can be clamped in the bayonet of the movable rod and threadedly connected with the locking nut, ensuring stable transmission of the locking force and enhancing the connection stability between the movable rod and the locking structure; when the locking screw rod is clamped in the bayonet, the movable rod can be stably installed by rotating the locking nut to abut against the movable rod, thereby forming a firm and closed frame-shaped structure with the U-shaped support, ensuring stable contact between the clamping structures and the steering wheel rim during the test, improving the adjustment accuracy and locking force of the clamp, enhancing the durability and service life of the clamp, and providing more reliable and efficient test conditions for the torsional strength test of the steering wheel rim.

[0014] Further, one end of the movable rod is fixed with a first plug, one of the vertical rods is formed with a through hole, and the first plug can be inserted into the through hole.

[0015] According to the above technical means, the first plug and the through hole are inserted to realize the quick disassembly and assembly of the movable rod and the vertical rod, which is simple in structure, convenient to disassemble and assemble, stable and reliable.

[0016] Further, the number of the clamping structures is four, and the four clamping structures are respectively installed on the movable rod, the horizontal rod and the two vertical rods.

[0017] According to the above technical means, the number of the clamping structures is four according to the frame structure, and is respectively installed on the movable rod, the horizontal rod and the two vertical rods, and is uniformly distributed in the circumferential direction of the frame structure, forming a full-range, multi-point rectangular clamping system, which enhances the clamping stability and test accuracy, can more effectively resist the torsional force generated by the steering wheel rim during the test, prevents displacement or deformation, enhances the overall structural strength of the clamp, and can still maintain stable performance when bearing a large torque, thereby further improving the safety and reliability of the test.

[0018] Further, the four clamping structures each include a screw rod, the movable rod, the horizontal rod and the two vertical rods are respectively formed with threaded holes, the four screw rods are respectively threadedly connected in one of the threaded holes, the lengths of the four screw rods are respectively arranged along the radial direction of the frame structure, one end of each screw rod is formed with an abutting portion for abutting against the steering wheel rim, the other end of each screw rod is respectively threadedly connected with a fixed nut, each fixed nut can abut against the corresponding movable rod, horizontal rod and two vertical rods, and the connecting structure is installed on one of the screw rods.

[0019] According to the above technical means, the combination of the screw rod, the threaded hole, the abutting portion and the fixed nut realizes stable clamping of the steering wheel rim, the length of the screw rod in each clamping structure is arranged along the radial direction of the frame structure, ensuring uniform distribution of the clamping force, effectively improving the stability and reliability of the clamping, and through the close contact of the four symmetrically arranged abutting portions with the steering wheel rim, the clamping effect is further enhanced under the action of the mutually opposing forces, preventing shaking or falling during operation, and at the same time, the stability of the screw rod is enhanced under the action of the fixed nut, which is high in stability and flexibility.

[0020] Further, the clamping structure further includes a force sensor, a recessed flange and a protruding flange, one end of the screw rod is connected with one end of the force sensor through the recessed flange, and the other end of the force sensor is connected with the abutting portion through the protruding flange.

[0021] According to the above technical means, the force sensor as the core component has high precision and sensitivity, can capture and accurately measure the torque change acting on the steering wheel rim in the test process in real time, and provides a solid guarantee for the accuracy and reliability of the test data. The concave flange and the convex flange as connecting pieces not only ensure the stable connection between the force sensor and the abutting part, but also disperse the stress concentration in the test process, protect the force sensor from damage, and prolong the service life of the force sensor.

[0022] Further, the abutting part is formed with a concave-convex rough surface on the side close to the steering wheel rim.

[0023] According to the above technical means, the concave-convex rough surface increases the friction between the steering wheel rim, effectively prevents relative sliding or displacement caused by torque during the test, and ensures the accuracy and reliability of the test data.

[0024] Further, the connecting structure includes a hexagon nut, the hexagon nut is threadedly connected to one of the threaded rods, the hexagon nut is formed with a limiting groove for connecting to an external force applying device, and the hexagon nut is movably inserted with a second pin, one end of the threaded rod close to the hexagon nut is formed with a limiting hole, and the second pin can be inserted into the limiting hole to fix the hexagon nut on the threaded rod.

[0025] According to the above technical means, the hexagon nut as an intermediate piece for external force transmission is firmly fixed on one of the threaded rods through threaded connection. During installation, the hexagon nut is first fixed on one of the threaded rods through cooperation of the second pin and the limiting hole, so as to adjust the position of the threaded rod and make the abutting part abut against the steering wheel rim. After installation, the second pin can be removed, so that the hexagon nut can rotate on the corresponding threaded rod to finely adjust the distance between the hexagon nut and the force sensor, meet the stress requirement, and then connect the external force applying device to the limiting groove to apply torque to the threaded rod through the hexagon nut. The limiting groove limits the action of the external force applying device to ensure the stability and consistency of the torque, thereby ensuring the reliability and safety of the whole clamp, and achieving flexible adjustment of the clamping force and position of the clamp, which provides a more scientific, accurate and efficient test solution for the automobile manufacturing industry.

[0026] Further, the locking nut is fixed with a locking handle, and the remaining three threaded rods are respectively fixed with adjusting handles.

[0027] According to the above technical means, the locking nut can be easily rotated by the locking handle, the movable rod is stably locked or released, the assembly and disassembly process of the clamp is simplified, the work efficiency is improved, the extension length of the screw rod can be adjusted through the handle, the clamping force between the abutting portion and the steering wheel rim is changed, and the flexibility and convenience are high.

[0028] The utility model realizes beneficial effect:

[0029] 1. The utility model discloses a center-symmetrical clamping structure, realize the efficient and stable clamping and fixed of steering wheel rim, not only ensure the accurate positioning of steering wheel rim in the test process, also promote the general versatility and adaptability of the clamp whole, make it can adapt to the test demand of steering wheel rim of different size and specification, need not frequently change the clamp, thereby effectively reduce the test cost and shorten the test preparation time, and the clamping structure is detachably installed on the support frame, convenient to assemble and dismount and provide great convenience for daily maintenance, improve the reliability and safety of test.

[0030] 2. The utility model discloses a connecting structure and external force applying device are connected, provide stable and reliable torque transmission path for the torsional strength test of steering wheel rim, ensure the accuracy and consistency of torque application in the test process, help to improve the accuracy and repeatability of test data, provide powerful technical support for the quality control of steering wheel rim. DRAWINGS

[0031] Figure 1 It is the structure schematic drawing of the utility model test fixture clamping steering wheel rim;

[0032] Figure 2 It is the structure schematic drawing of the utility model whole;

[0033] Figure 3 It is the utility model support frame's explosion map;

[0034] Figure 4 It is the structure schematic drawing of the utility model locking structure and support frame connection;

[0035] Figure 5 It is the structure schematic drawing of the utility model connecting structure and clamping structure;

[0036] Figure 6 It is the structure schematic drawing of the utility model clamping structure.

[0037] Wherein, 01 - steering wheel rim; 1 - support frame; 11 - movable rod; 111 - bayonet; 112 - first bolt; 12 - U-shaped support; 121 - through hole; 2 - clamping structure; 21 - screw rod; 211 - abutment; 2111 - concave-convex rough surface; 22 - threaded hole; 23 - fixing nut; 24 - force sensor; 25 - recessed flange; 26 - boss flange; 3 - connecting structure; 31 - hexagonal nut; 311 - limiting groove; 32 - second bolt; 33 - limiting hole; 4 - locking structure; 41 - mounting table; 42 - locking screw; 421 - rotating shaft; 43 - locking nut; 5 - locking handle; 6 - adjusting handle.

[0038] The accompanying drawings are only used for illustrative description and can not be understood as limitation to the patent; in order to better illustrate the embodiments, some components in the drawings can be omitted, enlarged or reduced, and do not represent the actual product size; it can be understood by those skilled in the art that some well-known structures and their descriptions can be omitted in the drawings; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are only used for illustrative description and can not be understood as limitation to the patent. DETAILED DESCRIPTION

[0039] It should be noted that the embodiments and technical features in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and description of the purpose of the present application, and should not be regarded as improper limitation to the present application.

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the specific technical scheme of the present application will be further described in combination with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0041] In the embodiments of the present application, the terms "first" and "second" are only used for description purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0042] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0043] In the embodiments of the present application, the terms "comprising", "containing" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0044] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the exemplary or for example embodiments are intended to convey concepts in a concrete manner.

[0045] The technical solutions of the present application are described in detail below in combination with specific drawings.

[0046] The present embodiment relates to a steering wheel rim torsion test fixture, as shown in Figure 1 and Figure 2 , comprising a support frame 1 and at least two clamping structures 2, each clamping structure 2 is centrally symmetrically arranged, and one end of each clamping structure 2 is detachably mounted on the support frame 1, and the other end can abut the steering wheel rim 01 respectively, for clamping and fixing the steering wheel rim 01; a connecting structure 3 is installed on one of the clamping structures 2, which is used to connect with an external force applying device, so as to test the torsional strength of the steering wheel rim 01.

[0047] The embodiment realizes efficient and stable clamping and fixing of the steering wheel rim 01 through at least two center-symmetric clamping structures 2, ensures accurate positioning of the steering wheel rim during the test, improves the universality and adaptability of the clamp as a whole, improves the work efficiency and application range, facilitates disassembly, maintenance, and has high reliability and safety in the test, and is connected with the external force applying device through the connecting structure 3, thereby providing a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim 01, and ensuring the accuracy and consistency of the torque application during the test. Specifically, a stable support base is provided through the support frame 1, and at least two clamping structures 2 are arranged in a center-symmetric manner on the support base, which ensures uniform distribution of clamping force and effectively avoids deviation or damage of the steering wheel rim 01 due to uneven force during the test. Each clamping structure 2 is precisely abutted with the corresponding position of the steering wheel rim 01, and then the external force applying device applies a torque force to the steering wheel rim 01 through the connecting structure 3 to perform a torque strength test. In actual application, when testing the leather-covered steering wheel, a torsional torque of 5 N·m is applied to the rim, and when testing the non-leather-covered steering wheel, a torsional torque of 15 N·m is applied to the rim. The external force applying device can be a weight, a digital torque wrench, manual or other tools directly pressed.

[0048] In the embodiment, the support frame 1 includes a movable rod 11 and a U-shaped support 12. The U-shaped support 12 is composed of a horizontal rod and two vertical rods, the two vertical rods are arranged parallel to each other, and the two vertical rods are respectively fixed perpendicularly at both ends of the horizontal rod. The movable rod 11 is arranged parallel to the horizontal rod, one end of the movable rod 11 is detachably mounted on one of the vertical rods, and the other end of the movable rod 11 is mounted on the other vertical rod through a locking structure 4 to form a closed frame structure. The frame structure can be sleeved on the steering wheel rim 01, and each clamping structure 2 is distributed along the circumference of the frame structure. The locking structure 4 is configured to lock or release the connecting rod 11, so that the frame structure is closed to support each clamping structure 2 in the locked state, or is opened to facilitate the placement or removal of the steering wheel rim 01 in the released state.

[0049] The embodiment can be used for Figure 2 and Figure 3As shown, the rectangular frame structure formed by the movable rod 11 and the U-shaped support 12 has good stability, can be sleeved on the steering wheel rim 01, ensures stable contact between the clamping structures 2 and the steering wheel rim 01 during the test, improves the stability of the clamping structures 2, ensures the accuracy of the test, and the clamping structures 2 are evenly distributed along the circumference of the frame structure, which not only ensures uniform distribution of clamping force, improves the clamping stability and reliability of the clamp on the steering wheel rim 01, enhances the versatility and adaptability of the clamp, and makes it more widely applicable to different specifications and types of steering wheel rim torsional strength tests. In actual application, when the steering wheel rim 01 needs to be tested, the locking structure 4 is unlocked to make the movable rod 11 separate from the U-shaped support 12, so that the rectangular frame structure is opened, the steering wheel rim 01 is placed in the rectangular frame structure, and then the locking structure 4 is locked again to lock the movable rod 11 and the U-shaped support 12, so as to form a stable rectangular frame structure. The steering wheel rim 01 is clamped and fixed by the interaction of the clamping structures 2. According to the experimental requirements, an external force applying device is used to apply torque to the steering wheel rim 01 through the connecting structure 3 and the corresponding clamping structure 2 to test the torque strength. When the torque test of the steering wheel rim 01 is completed, the locking structure 4 is unlocked again to make the movable rod 11 separate from the U-shaped support 12, so that the rectangular frame structure is opened, and the steering wheel rim 01 is taken out of the rectangular frame structure.

[0050] In the embodiment, the locking structure 4 includes a mounting table 41, a locking lead screw 42 and a locking nut 43. The mounting table 41 is fixed on the side wall of the other vertical rod. The locking lead screw 42 is rotatably installed on the mounting table 41 through a rotating shaft 421 at one end and is threadedly connected with the locking nut 43 at the other end. The other end of the movable rod 11 is formed with a bayonet 111. The locking lead screw 42 can be clamped in the bayonet 111, and the locking nut 43 can abut against the movable rod 11.

[0051] The embodiment Figure 2 and Figure 4As shown, in actual application, when it is needed to lock the movable rod 11 and the U-shaped support 12, the movable rod 11 is parallel to the cross rod, the locking screw rod 42 is turned upward through the rotating shaft 421, so that the locking screw rod 42 is clamped into the bayonet 111, the locking nut 43 is turned forward, so that the locking nut 43 abuts against the movable rod 11, thereby fixing the locking screw rod 42 in the bayonet 111, achieving the purpose of locking the movable rod 11 and the U-shaped support 12, to form a stable rectangular frame structure, when it is needed to unlock the movable rod 11 and the U-shaped support 12, the locking nut 43 is turned reversely, so that the locking nut 43 is away from the movable rod 11, thereby turning the locking screw rod 42 downward, so that the locking screw rod 42 is separated from the bayonet 111 to unlock the movable rod 11 and the U-shaped support 12, thereby separating the movable rod 11 and the U-shaped support 12, facilitating the steering wheel rim 01 to be put in or taken out.

[0052] In the embodiment, one end of the movable rod 11 is fixed with the first bolt 112, one of the vertical rods is formed with the through hole 121, and the first bolt 112 can be inserted into the through hole 121. Figure 4 As shown, in actual application, when assembling the frame structure, one end of the movable rod 11 is first inserted into the through hole 121 through the first bolt 112, and the other end is connected with the U-shaped support 12 through the locking structure 4, thereby forming a stable rectangular frame structure, when disassembling the frame structure, one end of the movable rod 11 is first unlocked from the U-shaped support 12 through the locking structure 4, and then the other end is separated from the through hole 121 through the first bolt 112, thereby achieving disassembly from the U-shaped support 12.

[0053] In the embodiment, the number of the clamping structures 2 is four, and the four clamping structures 2 are respectively installed on the movable rod 11, the cross rod and the two vertical rods. Figure 1 and Figure 2 As shown, according to the frame structure, the number of the clamping structures 2 is four, and the four clamping structures 2 are respectively installed on the movable rod 11, the cross rod and the two vertical rods, and are evenly distributed in the circumferential direction of the frame structure, forming a full-range and multi-point clamping system of the rectangle, enhancing the clamping stability and test accuracy, being able to more effectively resist the torsional force generated by the steering wheel rim 01 in the test process, preventing displacement or deformation of the steering wheel rim 01, enhancing the overall structural strength of the clamp, so that the clamp can still maintain stable performance when bearing a large torque, thereby further improving the safety and reliability of the test.

[0054] In this embodiment, the four clamping structures 2 each include a threaded rod 21, and the threaded holes 22 are respectively formed on the movable rod 11, the cross rod, and the two vertical rods. The four threaded rods 21 are respectively screwed into the threaded holes 22, and the lengths of the four threaded rods 21 are respectively arranged along the radial direction of the frame-shaped structure. One end of each threaded rod 21 is formed with an abutting portion 211 for abutting against the steering wheel rim 01, and the other end of each threaded rod 21 is respectively screwed with a fixed nut 23. Each fixed nut 23 can abut against the corresponding movable rod 11, cross rod, and two vertical rods. The connecting structure 3 is mounted on one of the threaded rods 21.

[0055] As shown in the embodiments of the present application Figure 2 、 Figure 5 and Figure 6 , in actual application, the abutting portion 211 is brought into contact with the surface of the steering wheel rim 01 by rotating the threaded rod 21. The steering wheel rim 01 is clamped and fixed under the action of mutual force. By adjusting the extension length of the threaded rod 21, the operator can accurately control the clamping force between the abutting portion 211 and the steering wheel rim 01, so as to adapt to the test requirements of steering wheel rims of different specifications and types. Then, the corresponding threaded rod 21 is positionally locked by rotating the fixed nut 23, so as to prevent test errors or safety hazards caused by loosening of the threaded rod 21 during the test. After the position adjustment of the threaded rod 21 is completed, an external force applying device applies a torque force to one of the threaded rods 21 through the connecting structure 3 for torque strength test, thereby improving the accuracy and efficiency of the test. Further, as a preferred embodiment, the side of the abutting portion 211 close to the steering wheel rim 01 is formed with a concave-convex rough surface 2111, which increases the friction between the abutting portion 211 and the steering wheel rim 01, effectively prevents relative sliding or displacement caused by torque during the test, and thus ensures the accuracy and reliability of the test data.

[0056] Further, as a preferred embodiment, the clamping structure 2 further includes a force sensor 24, a concave flange 25, and a convex flange 26. One end of the threaded rod 21 is connected with one end of the force sensor 24 through the concave flange 25, and the other end of the force sensor 24 is connected with the abutting portion 211 through the convex flange 26.

[0057] As shown in the embodiments of the present application Figure 1 and Figure 2 , the force sensor 24 as a core component provides test data for the torque strength test. The high precision and sensitivity of the force sensor 24 can capture and accurately measure the torque change acting on the steering wheel rim 01 during the test in real time, thereby providing a solid guarantee for the accuracy and reliability of the test data. The concave flange 25 and the convex flange 26 as connecting pieces not only ensure the stable connection between the force sensor and the abutting portion, but also disperse the stress concentration during the test, thereby protecting the force sensor from damage and prolonging the service life of the force sensor.

[0058] In the embodiment, the connecting structure 3 comprises a hexagonal nut 31, the hexagonal nut 31 is threadedly connected to one of the screw rods 21, the hexagonal nut 31 is formed with a limiting groove 311 for connecting to an external force applying device, and the hexagonal nut 31 is movably inserted with a second bolt 32, one end of the screw rod 21 close to the hexagonal nut 31 is formed with a limiting hole 33, and the second bolt 32 can be inserted into the limiting hole 33 to fix the hexagonal nut 31 on the screw rod 21.

[0059] In the embodiment, the connecting structure 3 comprises a hexagonal nut 31, the hexagonal nut 31 is threadedly connected to one of the screw rods 21, the hexagonal nut 31 is formed with a limiting groove 311 for connecting to an external force applying device, and the hexagonal nut 31 is movably inserted with a second bolt 32, one end of the screw rod 21 close to the hexagonal nut 31 is formed with a limiting hole 33, and the second bolt 32 can be inserted into the limiting hole 33 to fix the hexagonal nut 31 on the screw rod 21. Figure 5 As shown in the figure, the hexagonal nut 31 is used as an intermediate part for force transmission and is firmly fixed on one of the screw rods 21 through threaded connection. In actual application, when the extension length of the screw rod 21 needs to be adjusted, the second bolt 32 can be inserted into the limiting hole 33 to fix the hexagonal nut 31 on the screw rod 21, and then the screw rod 21 can be conveniently rotated through the hexagonal nut 31 to adjust the extension length to a preset position. When a torque force needs to be applied to the screw rod 21, the second bolt 32 is removed so that the hexagonal nut 31 can be rotated on the screw rod 21. According to test requirements, the hexagonal nut 31 can be rotated to finely adjust the distance between the hexagonal nut 31 and the corresponding force sensor 24 to meet the force requirement. After the adjustment is completed, a weight, a digital torque wrench, manual operation or other tools can be directly pressed into the limiting groove 311 to apply a torque force to the steering wheel rim 01 through the screw rod 21. The utility model has high practicability and flexibility.

[0060] Further, as a preferred embodiment, the locking nut 43 is fixed with a locking handle 5, and the remaining three screw rods 21 are respectively fixed with adjusting handles 6. Figure 1 As shown in the figure, the locking handle 5 can be easily used to rotate the locking nut 43 to stably lock or release the movable rod 11. The adjusting handle 6 can be used to adjust the extension length of the screw rod 21 to change the clamping force between the abutting part 211 and the steering wheel rim 01. The utility model has high flexibility and convenience.

[0061] The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process conversion using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A steering wheel rim torsion test fixture characterized by, The support frame (1) includes a movable rod (11) and a U-shaped support (12), the U-shaped support (12) is composed of a horizontal rod and two vertical rods, the two vertical rods are arranged in parallel to each other, and the two vertical rods are respectively fixed perpendicularly to the two ends of the horizontal rod; the movable rod (11) is arranged in parallel to the horizontal rod, one end of the movable rod (11) is detachably mounted on one of the vertical rods, and the other end of the movable rod (11) is mounted on the other vertical rod through a locking structure (4) to form a closed frame structure, the frame structure can be sleeved on the steering wheel rim (01), and the clamping structures (2) are evenly distributed along the circumference of the frame structure. The locking structure (4) is configured to lock or release the connecting rod (11), so that the frame structure is kept closed to support the clamping structures (2) in the locked state, or is opened to facilitate the putting in or taking out of the steering wheel rim (01) in the released state.

2. A steering wheel rim torsion test fixture according to claim 1, wherein, The locking structure (4) includes a mounting table (41), a locking lead screw (42) and a locking nut (43), the mounting table (41) is fixed on the side wall of the other vertical rod, one end of the locking lead screw (42) is rotatably mounted on the mounting table (41) through a rotating shaft (421), the other end of the locking lead screw (42) is threadedly connected with the locking nut (43), the other end of the movable rod (11) is formed with a bayonet (111), the locking lead screw (42) can be clamped in the bayonet (111), and the locking nut (43) can abut against the movable rod (11). One end of the movable rod (11) is fixed with a first bolt (112), one of the vertical rods is formed with a through hole (121), and the first bolt (112) can be inserted into the through hole (121).

3. A steering wheel rim torsion test fixture according to claim 2, wherein, The number of the clamping structures (2) is four, and the four clamping structures (2) are respectively mounted on the movable rod (11), the horizontal rod and the two vertical rods.

4. A steering wheel rim torsion test fixture according to claim 2, wherein, The four clamping structures (2) each include a screw rod (21), the movable rod (11), the horizontal rod and the two vertical rods are respectively formed with threaded holes (22), the four screw rods (21) are respectively threadedly connected in the threaded holes (22), the lengths of the four screw rods (21) are respectively arranged along the radial direction of the frame structure, one end of each of the four screw rods (21) is formed with an abutting portion (211) for abutting against the steering wheel rim (01), the other end of each of the four screw rods (21) is respectively threadedly connected with a fixing nut (23), each of the fixing nuts (23) can abut against the corresponding movable rod (11), the horizontal rod and the two vertical rods, and the connecting structure (3) is mounted on one of the screw rods (21).

5. A steering wheel rim torsion test fixture according to claim 2, wherein, ​ 6. A steering wheel rim torsion test fixture according to claim 5, wherein, ​ 7. A steering wheel rim torsion test fixture according to claim 6, wherein, The clamping structure (2) further comprises a force sensor (24), a concave flange (25) and a convex flange (26), one end of the screw rod (21) is connected with one end of the force sensor (24) through the concave flange (25), and the other end of the force sensor (24) is connected with the abutting portion (211) through the convex flange (26).

8. A steering wheel rim torsion test fixture according to claim 6, wherein, The abutting portion (211) is formed with a concave-convex rough surface (2111) near one side of the steering wheel rim (01).

9. A steering wheel rim torsion test fixture according to claim 6, wherein, The connecting structure (3) comprises a hexagon nut (31), the hexagon nut (31) is threadedly connected on one of the screw rods (21), the hexagon nut (31) is formed with a limiting groove (311) for connecting with an external force applying device, and the hexagon nut (31) is movably inserted with a second bolt (32), one end of one of the screw rods (21) is formed with a limiting hole (33) near the hexagon nut (31), and the second bolt (32) can be inserted into the limiting hole (33) to fix the hexagon nut (31) on one of the screw rods (21).

10. A steering wheel rim torsion test fixture according to claim 6, wherein, The locking nut (43) is fixed with a locking handle (5), and the remaining three screw rods (21) are respectively fixed with adjusting handles (6).

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