Automobile testing fixture clamp easy to disassemble

Abstract

The utility model relates to the technical field of automobile testing fixtures, and provides an easily detachable automobile testing fixture clamp, during installation, a knob is rotated, a second connecting rod is provided with threads meshed with grooves at two sides of a connecting block, and a first connecting rod at two sides of the clamp can be fixed with a fixed bracket by rotating the knob, so that the installation is completed; during disassembly, the second connecting rod is separated from the connecting block by rotating the knob, and then the pin rod is taken out from the elastic expansion sleeve, so that the clamp can be separated from the fixed bracket, and therefore, quick assembly and disassembly are facilitated, and the production efficiency is improved; in the process that a second connecting rod rotates into a connecting groove of a connecting block, a pin rod continuously expands the inner diameter of an elastic expansion sleeve, the relative position precision and the connecting stability between the pin rod and the elastic expansion sleeve can be guaranteed, meanwhile, one end of the pin rod is fixed in cooperation with the connecting groove in the connecting block, and therefore the first connecting rods on the two sides of the clamp are fixed through the pin rod; therefore, the clamp is not easy to deviate in the using process, and the precision and the stability of the clamp are ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive inspection tool technology, specifically an easily detachable automotive inspection tool clamp. Background Technology

[0002] In the automotive manufacturing industry, with the continuous expansion of production scale and the accelerating pace of model updates, the efficiency and accuracy of automotive parts inspection have become key factors. Automotive inspection fixtures are specialized inspection equipment used to measure and evaluate the dimensional quality of parts. On the parts production site, online inspection of parts is achieved through inspection fixtures. For this purpose, the parts need to be accurately installed on the inspection fixture, and then the parts' surfaces and perimeters are inspected by visual inspection, measuring instruments, or calipers. Inspection pins or visual inspection can also be used to visually inspect holes of different types on the parts and the connection positions between parts, thereby ensuring that the quality status of parts can be quickly judged during production.

[0003] Traditional automotive inspection fixtures often employ complex and fixed connection methods. When dealing with multiple vehicle models and frequent changes in the objects being inspected, the disassembly and installation process is extremely cumbersome, time-consuming, and labor-intensive, severely hindering the improvement of production cycle time. Furthermore, after repeated disassembly and installation, the positioning accuracy of traditional fixtures is difficult to guarantee, and deviations are prone to occur, leading to inaccurate inspection results and affecting product quality control. Therefore, an easily disassembled automotive inspection fixture is proposed to solve the above problems. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an easily detachable automotive inspection fixture to solve the problem that traditional fixtures, after multiple disassemblies and reassemblies, are prone to positioning errors, leading to inaccurate test results and affecting product quality control.

[0006] Technical solution

[0007] To achieve the above-mentioned objective, this utility model provides the following technical solution: an easily detachable automotive inspection fixture, comprising a fixture and a fixed bracket. The fixture is fixedly mounted with two first connecting rods. The first connecting rods have grooves, and elastic expansion sleeves are fixedly mounted on the outside of the grooves. A connecting block is fixedly mounted in the middle of the fixed bracket. The connecting block has grooves on both sides and is movably connected with pins. A knob and a second connecting rod are fixedly mounted at both ends of the pins, respectively.

[0008] Furthermore, the second connecting rod is provided with threads that engage with the grooves on both sides of the connecting block.

[0009] Furthermore, the elastic expansion sleeve is made of high-quality spring steel and is subjected to quenching and tempering treatment to achieve a hardness of HRC48-52.

[0010] Furthermore, the elastic expansion sleeve is annular, and its outer surface has multiple open grooves evenly distributed along the circumference. The grooves are about 1-2 mm wide and about 1 / 2 of the wall thickness of the elastic expansion sleeve.

[0011] Furthermore, the inner diameter of the elastic expansion sleeve and the cylindrical section of the pin are interference-fitted. After assembly, the elastic expansion sleeve hugs the pin. The outer diameter surface of the elastic expansion sleeve is arc-shaped and located in the groove opened in the first connecting rod.

[0012] Furthermore, the pin is made of high-strength alloy steel, and its hardness reaches HRC32-36 after heat treatment.

[0013] Furthermore, the second connecting rod and the pin are connected in the middle with a hemispherical transition zone.

[0014] Furthermore, the area from the middle position of the pin to the knob is a tapered shape with the diameter increasing sequentially.

[0015] Furthermore, the fixed bracket is provided with a detachable limiting frame.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model provides an easily detachable automotive inspection fixture, which has the following advantages:

[0018] 1. During installation, turn the knob. The second connecting rod has threads that mesh with the grooves on both sides of the connecting block. By rotating the knob, the first connecting rods on both sides of the clamp can be fixed to the fixed bracket, thus completing the installation. During disassembly, turn the knob to separate the second connecting rods on both sides of the connecting block from the connecting block, and then remove the pin from the elastic expansion sleeve to separate the clamp from the fixed bracket. This facilitates quick installation and disassembly, saves time, and improves production efficiency.

[0019] 2. During the process of the second connecting rod rotating into the connecting groove of the connecting block, the pin will continuously tighten the inner diameter of the elastic expansion sleeve, which can ensure the relative positional accuracy and connection stability between the pin and the elastic expansion sleeve. At the same time, the connecting groove in the connecting block fixes one end of the pin, thereby fixing the first connecting rods on both sides of the fixture. This makes the fixture less prone to displacement during use, ensuring the accuracy and stability of the fixture.

[0020] 3. The connection between the second connecting rod and the pin is provided with a hemispherical transition area. When the pin is installed, the hemispherical part contacts the groove inside the first connecting rod, which helps to increase the contact area between the pin and the inside of the first connecting rod, reduce stress concentration, and thus extend the service life of the pin. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the main structure of the present utility model;

[0022] Figure 2 This is an exploded view of the main structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the fixed bracket structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the elastic expansion sleeve structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the pin structure of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 10. Fixture; 11. First connecting rod; 12. Elastic expansion sleeve; 13. Opening groove; 20. Fixed bracket; 21. Limiting frame; 22. Connecting block; 23. Pin; 24. Knob; 25. Second connecting rod. Detailed Implementation

[0028] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0033] Please see Figures 1-5 This utility model proposes an easily detachable automotive inspection fixture 10. During use and installation, the fixture 10 is first installed on a fixed bracket 20. Two first connecting rods 11 are fixedly installed on the back side of the fixed bracket 20. The first connecting rods 11 are installed between detachable limiting frames 21 installed on the fixed bracket 20. The first connecting rods 11 have grooves, and elastic expansion sleeves 12 are fixedly installed on the outside of the grooves. A pin 23 is passed through the elastic expansion sleeves 12, and a second connecting rod 25 at one end of the pin 23 is inserted into the grooves on both sides of the connecting block 22 fixedly installed in the middle of the fixed bracket 20. The knob 24 at the other end of the pin 23 is rotated. The second connecting rod 25 has threads that mesh with the grooves on both sides of the connecting block 22. By rotating the knob 24, the first connecting rods 11 on both sides of the fixture 10 can be fixed to the fixed bracket 20, thus completing the installation.

[0034] During disassembly, turn knob 24 to separate the second connecting rods 25 on both sides of connecting block 22 from connecting block 22, and then remove pin 23 from elastic expansion sleeve 12 to separate clamp 10 from fixed bracket 20.

[0035] The elastic expansion sleeve 12 is made of high-quality spring steel and is quenched and tempered to achieve a hardness of HRC48-52, giving it a high elastic limit and fatigue life. The elastic expansion sleeve 12 is annular, with multiple open grooves 13 evenly distributed along its circumference on its outer surface. The grooves are about 1-2 mm wide and about half the wall thickness of the elastic expansion sleeve 12, giving it good elastic deformation capability. The inner diameter of the elastic expansion sleeve 12 is interference-fitted with the cylindrical section of the pin 23. After assembly, the elastic expansion sleeve 12 grips the pin 23 tightly. The outer diameter surface of the elastic expansion sleeve 12 is arc-shaped and located in the groove opened in the first connecting rod 11. The outer diameter of the elastic expansion sleeve 12 in the groove can reduce stress concentration and prevent damage to the elastic expansion sleeve 12.

[0036] The pin 23 is made of high-strength alloy steel. After quenching and tempering, its hardness reaches HRC32-36. It has good comprehensive mechanical properties, ensuring sufficient strength to withstand the force of the connection part, and also having a certain toughness to prevent brittle fracture.

[0037] The second connecting rod 25 and the pin 23 are connected by a hemispherical transition area. When the pin 23 is installed, the hemispherical shape contacts the groove inside the first connecting rod 11, which helps to increase the contact area between the pin 23 and the first connecting rod 11, reduce stress concentration, and thus extend the service life of the pin 23. The pin 23 is tapered from the middle position to the knob 24, with the diameter increasing sequentially. During installation, this facilitates full contact between the middle position of the pin 23 and the elastic expansion sleeve 12. At the same time, as the second connecting rod 25 rotates into the connecting groove of the connecting block 22, the pin 23 will continuously tighten the inner diameter of the elastic expansion sleeve 12, which can ensure the relative positional accuracy and connection stability between the pin 23 and the elastic expansion sleeve 12. In addition, the connecting groove in the connecting block 22 fixes one end of the pin 23, thereby fixing the first connecting rods 11 on both sides of the clamp 10. This makes the clamp 10 less prone to displacement during use, ensuring the accuracy and stability of the clamp 10.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable automotive inspection fixture, comprising a fixture (10) and a fixing bracket (20), characterized in that: The clamp (10) is fixedly installed with two first connecting rods (11). The first connecting rod (11) has a groove, and an elastic expansion sleeve (12) is fixedly installed on the outside of the groove. A connecting block (22) is fixedly installed in the middle of the fixed bracket (20). The connecting block (22) has grooves on both sides and is movably connected with a pin (23). A knob (24) and a second connecting rod (25) are fixedly installed at both ends of the pin (23).

2. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The second connecting rod (25) is provided with threads that engage with the grooves on both sides of the connecting block (22).

3. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The elastic expansion sleeve (12) is made of high-quality spring steel and is quenched and tempered to achieve a hardness of HRC48-52.

4. The easily detachable automotive inspection fixture according to claim 2, characterized in that: The elastic expansion sleeve (12) is annular, and its outer surface has multiple open grooves (13) evenly distributed along the circumference. The grooves are about 1-2 mm wide and about 1 / 2 of the wall thickness of the elastic expansion sleeve (12).

5. The easily detachable automotive inspection fixture according to claim 4, characterized in that: The inner diameter of the elastic expansion sleeve (12) and the cylindrical section of the pin (23) are interference-fitted. After assembly, the elastic expansion sleeve (12) hugs the pin (23). The outer diameter surface of the elastic expansion sleeve (12) is arc-shaped and located in the groove opened in the first connecting rod (11).

6. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The pin (23) is made of high-strength alloy steel and its hardness reaches HRC32-36 after quenching and tempering.

7. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The second connecting rod (25) and the pin (23) are connected by a hemispherical transition zone.

8. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The pin (23) is tapered from its middle position to the knob (24), with the diameter increasing sequentially.

9. The easily detachable automotive inspection fixture according to claim 1, characterized in that: The fixed bracket (20) is provided with a detachable limiting frame (21).

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