Inspection tooling

Abstract

This application relates to a testing fixture applied to vehicles. The fixture includes a base, a testing element, and a positioning element. The base includes a testing surface and a pick-up surface arranged opposite each other along the thickness direction. One end of the testing element is connected to the testing surface, and the other end extends away from the pick-up surface, used to test the meshing state between the wheel hub and drive shaft of the vehicle. The positioning element is connected to the testing surface and used to position the vehicle to be tested. This testing fixture, through the integrated design of the base, testing element, and positioning element, allows operators to quickly locate the meshing position of the spline using the positioning element after installing a structure with end-face splines. The testing element then performs more convenient, faster, and more accurate testing of the meshing state. Therefore, this design significantly reduces the cost and manpower required for testing the end-face spline meshing state, improves testing efficiency and accuracy, enhances testing flexibility and adaptability, and simplifies the operation process.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to a testing fixture. Background Technology

[0002] As new energy vehicles become increasingly popular, traditional torque transmission methods are clearly insufficient to match the "high-speed" and "high-efficiency" characteristics of these vehicles, especially when equipped with high-torque drive motors. Therefore, face spline wheel bearings are gradually being used in new energy vehicles. The face spline design is lighter and simpler, making it particularly suitable for future powertrain systems. By reducing unsprung weight by 20%, the vehicle's weight is reduced during driving, significantly improving driving performance. However, ensuring proper engagement of the face splines remains a challenge.

[0003] Existing methods for inspecting splines on the end face typically involve placing the hub and drive shaft on a specialized testing platform and using large equipment to inspect the meshing state of the splines. However, this design requires investment in specialized equipment, resulting in high costs associated with equipment development, acceptance, inspection, repair, and maintenance. It also necessitates significant investment of human, material, and financial resources for research and development and implementation, leading to high overall costs. Utility Model Content

[0004] This application provides a testing fixture to address some or all of the shortcomings in related technologies.

[0005] The inspection fixture of this application is applied to vehicles and includes a base, an inspection component, and a positioning component. The base includes an inspection surface and a pick-up surface arranged opposite to each other along the thickness direction. One end of the inspection component is connected to the inspection surface, and the other end extends away from the pick-up surface, for detecting the meshing state between the wheel hub and the drive shaft of the vehicle. The positioning component is connected to the inspection surface and is used to position the vehicle to be inspected.

[0006] Optionally, the detection element includes an extension and a probe that are connected to each other. One end of the extension is connected to the detection surface, and the other end is connected to the probe. The outer diameter of the probe is smaller than the outer diameter of the extension.

[0007] Optionally, the detection element further includes a clearance groove located at the end of the extension away from the detection surface and arranged side by side with the detection part.

[0008] Optionally, the detection element further includes an adjustment part connected to the extension portion, the adjustment part being used to adjust the extension length of the extension portion.

[0009] Optionally, the seat includes a connecting groove, one end of the extension is inserted into the connecting groove, the adjusting part is located on the detection surface and connected to the extension, and is used to lock or release the extension.

[0010] Optionally, one end of the positioning member is connected to the detection surface, and the other end extends in a direction away from the picking surface. In the direction from the picking surface to the detection surface, the outer diameter of the positioning member gradually decreases at the end away from the detection surface, forming a guide portion of the positioning member.

[0011] Optionally, the positioning element is detachably connected to the base.

[0012] Optionally, the detection component, the positioning component, and the base are integrally formed.

[0013] Optionally, the inspection fixture further includes a handle connected to the pick-up surface, the handle extending from the pick-up surface toward an end away from the inspection surface.

[0014] Optionally, the testing fixture further includes a handle, which is connected to the end of the handle away from the grasping surface. The projection area of ​​the handle on the grasping surface covers the handle.

[0015] Optionally, the testing fixture is made of polyoxymethylene material.

[0016] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0017] As can be seen from the above embodiments, the testing fixture of this application, through the integrated design of the base, testing component, and positioning component, enables operators to quickly locate the spline engagement position using the positioning component after installing the structure with the end spline. Then, the testing component allows for more convenient, faster, and more accurate detection of the end spline engagement state. Therefore, the design of the testing fixture significantly reduces the cost and manpower required for detecting the end spline engagement state, improves testing efficiency and accuracy, enhances testing flexibility and adaptability, and simplifies the operation process.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the testing tooling in one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the spline on the end face of the wheel hub in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the spline on the end face of the drive shaft in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the connection between the wheel hub and the drive shaft end face in one embodiment of this application;

[0024] Figure 5 This is a schematic diagram illustrating the detection of misalignment between the wheel hub and the drive shaft by the detection fixture in one embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the detection tool detecting that the wheel hub and drive shaft are engaged in place, according to one embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Inspection fixture; 11. Base; 111. Inspection surface; 112. Pick-up surface; 12. Inspection piece; 121. Extension; 122. Detection part; 123. Clearance groove; 13. Positioning part; 131. Guide part; 14. Handle; 15. Handle head; 2. Hub; 3. Drive shaft; 4. Steering knuckle; X, thickness direction; Y, width direction. Detailed Implementation

[0028] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0030] like Figure 1As shown, the inspection fixture 1 of this application is applied to a vehicle and includes: a seat 11, an inspection element 12, and a positioning element 13. The seat 11 includes an inspection surface 111 and a pick-up surface 112 arranged opposite to each other along the thickness direction X. One end of the inspection element 12 is connected to the inspection surface 111, and the other end extends away from the pick-up surface 112, and is used to inspect the meshing state between the wheel hub 2 and the drive shaft 3 of the vehicle. The positioning element 13 is connected to the inspection surface 111 and is used to position the vehicle at the position to be inspected.

[0031] The inspection fixture 1 of this application, through the integrated design of the base 11, the inspection element 12, and the positioning element 13, enables operators to quickly locate the spline engagement position using the positioning element 13 after installing the structure with the end face spline. Then, the inspection element 12 allows for more convenient, rapid, and accurate inspection of the end face spline engagement state. Therefore, the design of the inspection fixture 1 significantly reduces the inspection cost and manpower required for the end face spline engagement state, improves inspection efficiency and accuracy, enhances inspection flexibility and adaptability, and simplifies the operation process.

[0032] In specific use cases, Figure 2 , Figure 3 and Figure 4 Taking the installation of the hub 2 and drive shaft 3 as an example, after the operator engages the end spline of the hub 2 with the end spline of the drive shaft 3, since the hub 2 has a mounting hole for installing the wheel speed sensor, the positioning member 13 can be aligned with the mounting hole and inserted into the mounting hole. The movement within the mounting hole allows the detection member 12 to be inserted into the engagement position of the hub 2 and drive shaft 3. The engagement state of the hub 2 and drive shaft 3 can then be detected through the end of the detection member 12. Once it is detected that the end spline is not properly engaged, disassembly and reassembly can be performed.

[0033] Of course, the vehicle described in this application also includes a steering knuckle 4 connected to the wheel hub 2. Since the distance between the steering knuckle 4 and the end face spline is relatively fixed, for example, in the embodiment provided in this application, when the end face spline of the wheel hub 2 and drive shaft 3 has a misalignment (i.e., not fully engaged), the deepest point of the end face spline that can be detected is 4-5 mm from the edge of the steering knuckle 4; however, when the end face spline is engaged, the deepest point of the end face spline that can be detected is only 2-3 mm from the edge of the steering knuckle 4. Therefore, the operator only needs to set the detection element 12 to the corresponding length, ensuring that its length matches the distance between the steering knuckle 4 and the end face spline. Figure 5 As shown, if there is a tooth misalignment between the wheel hub 2 and the drive shaft 3, the detection element 12 can be inserted deeper through the gap between the end face splines. In this way, the detection surface 111 of the seat 11 will touch the end face of the steering knuckle 4, thus alerting the operator to the information that the engagement is incomplete. And combined with... Figure 6 As shown, if the hub 2 and drive shaft 3 are engaged, the detection part 122 cannot be inserted into the engagement gap. Therefore, there will always be a certain distance between the detection surface 111 of the seat 11 and the end face of the steering knuckle 4, thus reminding the operator that the engagement is complete.

[0034] It is evident that the inspection fixture 1 of this application can more conveniently, quickly and accurately inspect the meshing state of the end face spline, thereby improving the flexibility, adaptability and accuracy of the inspection, and enabling the inspection fixture 1 to be flexibly applied to a variety of different vehicle models.

[0035] In an optional embodiment, the detection element 12 includes an extension 121 and a probe 122 connected to each other. One end of the extension 121 is connected to the detection surface 111, and the other end is connected to the probe 122. The outer diameter of the probe 122 is smaller than the outer diameter of the extension 121.

[0036] The inspection fixture 1 of this application has an outer diameter of the probe 122 that is smaller than that of the extension 121, allowing the probe 122 to be inserted more deeply into the meshing gap between the hub 2 and the drive shaft 3, thus achieving accurate detection of the meshing state. This design enables the inspection fixture 1 to make more comprehensive contact with the meshing position of the end face spline, improving the depth and accuracy of the inspection.

[0037] In this embodiment, the probe 122 can be designed as a probe structure with a smaller outer diameter, thereby enabling more precise insertion into the engagement position. In other optional embodiments, the specific structure of the detection element 12 can be designed according to the actual working scenario and usage requirements. For example, in an optional embodiment, the detection element 12 further includes a clearance groove 123, which is located at the end of the extension 121 away from the detection surface 111 and is arranged side by side with the probe 122 in the width direction Y.

[0038] In this embodiment, the detection component 12 can effectively avoid the structure at the detection location through the avoidance groove 123, preventing the detection component 12 from interfering with non-detection parts of the structure such as the hub 2 or drive shaft 3 during the detection process, thereby enhancing the practicality and accuracy of the detection fixture 1.

[0039] In an optional embodiment, the detection element 12 further includes an adjustment part connected to the extension 121, the adjustment part being used to adjust the extension length of the extension 121.

[0040] This application, by incorporating an adjustment section, enables free adjustment of the length of the extension section 121. This allows operators to adjust the length of the extension section 121 when inspecting different vehicle models, significantly improving the flexibility, adaptability, and accuracy of the inspection. Therefore, the design of the adjustment section not only simplifies the inspection operation process and enhances the versatility and multifunctionality of the inspection component 12, but also optimizes the structure of the inspection component 12, improving the safety and stability of the inspection, extending the service life of the inspection component 12, and reducing maintenance and repair costs. Therefore, this application does not limit the specific structure of the inspection component 12.

[0041] In an optional embodiment, the seat 11 includes a connecting groove, one end of the extension 121 is inserted into the connecting groove, and the adjustment part is located on the detection surface 111 and connected to the extension 121 for locking or releasing the extension 121.

[0042] This application features a connecting groove on the base 11, along with a locking or releasing function of the adjustment part, allowing the extension part 121 to be flexibly adjusted to the length inserted into the connecting groove. This enables precise adjustment and quick installation of the extension part 121, significantly improving the convenience, accuracy, and versatility of the inspection. In other optional embodiments, the design can be tailored to the specific working scenario and usage requirements. For example, the extension part 121 can be designed as a two-section structure with movable connections, adjusting the connection position of the two sections to achieve its extension length; alternatively, it can be designed as a multi-section structure with interlocking sections, etc. This application does not impose any limitations on this design.

[0043] In an optional embodiment, one end of the positioning member 13 is connected to the detection surface 111, and the other end extends in a direction away from the pick-up surface 112. In the direction from the pick-up surface 112 to the detection surface 111, the outer diameter of the end of the positioning member 13 away from the detection surface 111 gradually decreases, forming a guide portion 131 of the positioning member 13.

[0044] This application designs a guide part 131 at the end of the positioning part 13, so that the inspection fixture 1 can be guided to the positioning part 13 to the target position during the positioning and installation process, thereby enabling the inspection fixture 1 to have a more accurate positioning capability.

[0045] In actual use, the positioning element 13 is detachably connected to the base 11.

[0046] Similarly, the size and shape of the mounting holes for wheel speed sensors vary for different vehicle models. Therefore, this application designs a detachable positioning component 13, allowing operators to perform inspections on different vehicle models simply by switching to a positioning component 13 of the corresponding size and shape and adjusting the extension length of the detection component 12. It is evident that the design of the positioning component 13 in this application significantly improves the flexibility, adaptability, and versatility of the inspection fixture 1, simplifies maintenance and replacement processes, and reduces maintenance and repair costs.

[0047] Of course, in another optional embodiment, the detection component 12, the positioning component 13, and the base 11 are integrally formed. This design makes the overall structure of the detection fixture 1 more integrated and stable, and also improves the convenience of its production process, reduces production costs, and increases production efficiency.

[0048] In an optional embodiment, the inspection fixture 1 further includes a handle 14 connected to the pick-up surface 112, the handle 14 extending from the pick-up surface 112 toward an end away from the inspection surface 111.

[0049] This application significantly improves the convenience, stability, and comfort of the testing fixture 1 during operation by designing a handle 14 on one side of the pick-up surface 112. This design not only optimizes the structural layout of the testing fixture 1 and enhances its stability and anti-slip performance, but also simplifies the operation process and improves the user experience for operators.

[0050] In an optional embodiment, the detection fixture 1 further includes a handle 15, which is connected to the end of the handle 14 away from the pick-up surface 112. The projection area of ​​the handle 15 on the pick-up surface 112 covers the handle 14.

[0051] The design of the handle 15 in this application improves the anti-slip performance of the testing fixture 1, reducing safety hazards caused by operator slippage during operation, thereby enhancing the safety and reliability of the testing fixture 1, especially in wet or sweaty conditions. Furthermore, since the projection area of ​​the handle 15 on the grasping surface 112 covers the handle 14—in other words, on a plane parallel to the grasping surface 112, the cross-sectional area of ​​the handle 15 is larger than that of the handle 14—operators can more safely tap the handle 15 during use, allowing the testing fixture 1 to probe deeper and more accurately, thus ensuring the testing accuracy of the testing fixture 1.

[0052] In an optional embodiment, the testing fixture 1 is made of polyoxymethylene (POM) material.

[0053] This application utilizes polyoxymethylene (POM) material to manufacture the testing fixture 1. While ensuring its mechanical strength, this also improves the fixture's wear resistance, chemical corrosion resistance, and impact resistance. Furthermore, it enables efficient production through injection molding and stamping, thereby simplifying the processing and increasing production efficiency. Simultaneously, the lightweight nature of POM material allows operators to use the fixture more easily. Additionally, this design prevents the testing fixture 1 from causing wear and tear on the vehicle's structure during use, ensuring the vehicle's stability and safety.

[0054] Of course, in other alternative embodiments, the testing fixture 1 can also be made of plastic materials such as PTE, PP, and PVC, and this application does not limit this.

[0055] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An inspection tool, characterized by, Applied to vehicles, the testing fixture includes: The base includes a detection surface and a retrieval surface arranged opposite to each other along the thickness direction; A detection element, one end connected to the detection surface and the other end extending away from the retrieval surface, is used to detect the engagement state between the wheel hub and the drive shaft of the vehicle; and A positioning element, connected to the detection surface, is used to locate the position of the vehicle to be detected.

2. The inspection tool of claim 1, wherein The detection element includes an extension and a probe that are connected to each other; one end of the extension is connected to the detection surface and the other end is connected to the probe; wherein the outer diameter of the probe is smaller than the outer diameter of the extension.

3. The inspection tool of claim 2, wherein, The detection element also includes a clearance groove, which is located at the end of the extension away from the detection surface and is arranged side by side with the detection part.

4. The inspection tool of claim 2, wherein, The detection element also includes an adjustment part connected to the extension portion, the adjustment part being used to adjust the extension length of the extension portion.

5. The inspection tool of claim 4, wherein, The seat includes a connecting groove, one end of the extension is inserted into the connecting groove, and the adjustment part is located on the detection surface and connected to the extension for locking or releasing the extension.

6. The inspection tool of claim 1, wherein One end of the positioning member is connected to the detection surface, and the other end extends in a direction away from the picking surface; in the direction from the picking surface to the detection surface, the outer diameter of the end of the positioning member away from the detection surface gradually decreases, forming a guide portion of the positioning member.

7. The inspection tool of claim 6, wherein, The positioning element is detachably connected to the base.

8. The inspection tool of claim 1, wherein, The detection component, the positioning component, and the base are integrally formed.

9. The inspection tool of claim 1, wherein, The testing fixture also includes a handle connected to the picking surface, the handle extending from the picking surface toward an end away from the testing surface.

10. The inspection tool of claim 9, wherein, The testing fixture also includes a handle, which is connected to the end of the handle away from the grasping surface; wherein the projection area of ​​the handle on the grasping surface covers the handle.

11. The inspection tool of claim 1, wherein The testing fixture is made of polyoxymethylene material.

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