Testing device, testing device for the welding strength of contact assembly contacts

Abstract

This utility model claims protection for a testing device for the welding strength of contact points in a contact assembly. The key technical features include a base, a rotating module mounted on the base, and a positioning module that cooperates with the rotating module. The test piece is mounted on the positioning module. The rotating module is movable relative to the test piece and, after movement, connects to a portion of the test piece to form a circumferentially rotating fixed structure. The positioning module fixes the test piece and, in conjunction with the rotating module, twists the test piece. This testing device for the welding strength of contact points in a contact assembly employs the aforementioned testing method. The device is used to detect the welding strength of the contact points in a contact assembly. This technical solution has beneficial effects: by fixing the test piece with the positioning module and then connecting the rotating module to the test piece to form a circumferentially rotating fixed structure, the operating method is standardized, reducing errors caused by differences in operating methods.

Description

Technical Field

[0001] This utility model relates to the field of measurement and testing, and more specifically, it relates to a detection device and a device for detecting the welding strength of contact points of contact assemblies. Background Technology

[0002] In existing technologies, the contact assembly, as a core component of switching electrical appliances, directly affects the overall performance and service life of the appliance due to the welding strength between its contacts and contact bridges. Common welding strength testing methods include metallographic analysis, shear force testing, hammer impact testing, and torsion testing. However, torsion testing, applicable to miniature circuit breakers, currently lacks a standardized clamping scheme and relies heavily on manual operation. This is prone to measurement errors introduced by variations in operating techniques, affecting the accuracy and repeatability of the test results. Utility Model Content

[0003] To address the shortcomings of existing technologies, a detection device and a detection device for the welding strength of contact components are provided. This device can reduce or eliminate measurement errors caused by differences in operating techniques.

[0004] To achieve the above objectives, the following technical solution is provided: a detection device, comprising a base, a rotating module mounted on the base, and a positioning module cooperating with the rotating module; The test piece is mounted on the positioning module; The rotating module is movable relative to the test piece, and after moving, it connects with part of the test piece to form a fixed circumferential rotation. The positioning module fixes the test piece and works in conjunction with the rotation module to twist it.

[0005] In a further optimization of this utility model, the positioning module includes a base and a support block; The base is provided with a support groove for inserting or removing the test piece; The support block is slidably connected to the base; After the support block moves, it comes into contact with the test piece, which is used to fix the test piece in conjunction with the support groove.

[0006] A further optimization of this utility model is that the support block is provided with a receiving groove; The receiving groove accommodates part of the test piece and cooperates with the support groove to form a fixed shape for circumferential rotation.

[0007] In a further optimization of this invention, the rotating module includes a rotating shaft; A limit groove is provided at one end of the rotating shaft; The rotating shaft is movable relative to the test piece; After the rotating shaft is moved and the limiting groove is moved into place, the inner bottom wall of the limiting groove abuts against the test piece, and the inner side wall of the limiting groove abuts against the test piece, forming a fixed circumferential rotation.

[0008] In a further optimization of this utility model, the base is provided with a first limiting block and a second limiting block; The rotating shaft is also provided with a first abutting element; The first limiting block and the second limiting block are located on both sides of the first contact member, and cooperate to limit the maximum rotation angle of the rotating shaft.

[0009] In a further optimization of this utility model, the rotating module includes a second abutting member; The first and second abutments are disposed at both ends of the rotating shaft and are used to limit the maximum movement path of the rotating shaft relative to the base.

[0010] In a further optimization of this utility model, the positioning module is mounted on the base; The maximum movement path of the rotating shaft relative to the base corresponds to the position of the positioning module, so as to fix the test piece and cooperate to twist the test piece.

[0011] The testing device for the contact welding strength of the contact assembly adopts the testing device as described above, and the testing device is used to test the contact welding strength of the contact assembly.

[0012] The technical solution has the following advantages: the test piece is fixed by the positioning module, and then the moving and rotating module is connected to the test piece to form a circumferential rotation fixation, thereby unifying the operation method and reducing the error caused by the difference in operation method. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the detection device in this scheme.

[0014] Figure 2 This is a three-dimensional structural diagram of the positioning module in this solution.

[0015] Figure 3 This is a three-dimensional structural diagram of the rotating module in this solution.

[0016] Reference numerals in the attached drawings: 1. Base; 11. First limiting block; 12. Second limiting block; 2. Rotation module; 21. Rotation shaft; 211. Limiting groove; 212. First contacting element; 213. Second contacting element; 3. Positioning module; 31. Base; 311. Support groove; 32. Support block; 321. Receiving groove; 4. Component to be tested. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0018] Reference Figure 1-3 As shown, a detection device includes a base 1, a rotating module 2 mounted on the base 1, and a positioning module 3 that cooperates with the rotating module 2; The test piece 4 is mounted on the positioning module 3; The rotating module 2 is movable relative to the test piece 4, and after moving, it connects with part of the test piece 4 to form a fixed circumferential rotation. Positioning module 3 fixes the test piece 4 and rotates the test piece 4 in conjunction with rotation module 2.

[0019] like Figure 1 As shown, the base 1 serves as the overall support structure and can move the rotating module 2 together, making it easy to transport. The rotating module 2 is connected to the test piece 4 in a movable manner, for example by sliding or rotating, so that the rotating module 2 engages with a part of the structure (such as contacts or contact bridges) of the test piece 4, forming a circumferential rotation fixation of the test piece 4, thereby applying a torsional force to the test piece 4 when the rotating module 2 is in motion. like Figure 1 As shown, the method is to move the rotating shaft 21 so that the rotating shaft 21 is interference-fitted with the contact bridge to form a fixed position after movement. Alternatively, as described above, the rotating shaft 21 can be moved by rotating a lead screw or other components. Or, the contact end of the rotating shaft 21 with the test piece 4 can be provided with a clamping component to clamp the test piece 4. The positioning module 3 fixes the test piece 4 by clamping or supporting it to prevent the test piece 4 from shifting during the torsion process and ensure that the torsion force is accurately transmitted to the welding part of the test piece 4. With the cooperation of the rotation module 2 and the positioning module 3, the test piece 4 is twisted. The rotated test piece 4 is then removed, and its state is observed to confirm whether the detection part of the test piece 4 has fallen off or broken. The twisting action can be performed by rotating module 2 with a motor driven, or manually by rotating module 2. The rotating module 2 can be installed on the base 1 by means of bolts, and the positioning module 3 can also be installed on the base 1 or other platforms that can cooperate with the rotating module 2 by means of bolts. Compared with existing technologies, this solution uses the cooperation of positioning module 3 and rotation module 2 to form a standardized operation process for torsion testing. It is only necessary to place the test piece 4 on the positioning module 3 and then use the rotation module 2 to perform the torsion test. This solution reduces the number of manual intervention steps (such as clamping actions), thereby reducing the error caused by manual operation.

[0020] Preferably, the positioning module 3 includes a base 31 and a support block 32; The base 31 is provided with a support groove 311 for inserting or removing the test piece 4; Support block 32 is slidably connected to base 31; After the support block 32 moves, it comes into contact with the test piece 4, which is used to fix the test piece 4 in conjunction with the support groove 311.

[0021] like Figure 2 As shown, the support groove 311 provides initial positioning and support for the test piece 4. The support block 32 is slidably connected to the base 31 (e.g., by means of a slide rail or guide rod), allowing the support block 32 to move towards the test piece 4 and abut against the surface of the test piece 4, thereby forming a shape together with the support groove 311 as shown. Figure 1 The clamping and fixing of the workpiece 4 to be tested is shown; When the test piece 4 (such as a contact assembly) is inserted into the support slot 311, the movement of the support block 32 is achieved through mechanical drive. Figure 2 You can use your manual method or a pneumatically driven support block 32 to ensure that the test piece 4 will not slip or fall off during the torsion test; At the same time, a spring can be provided to provide elastic force for the support block 32 to move towards the test piece 4, so that the support block and the test piece 4 fit tightly together.

[0022] Preferably, the support block 32 is provided with a receiving groove 321; The receiving groove 321 receives part of the test piece 4 and cooperates with the support groove 311 to form a fixed position for circumferential rotation.

[0023] The receiving groove 321 on the support block 32 is used to receive a portion of the structure of the test piece 4 (such as a contact bridge or pin). When the support block 32 moves to contact the test piece 4, the receiving groove 321 opens as follows: Figure 2 and Figure 1 The device shown is used to accommodate the test piece 4, thereby fixing the test piece 4 in a circumferential rotation. The shape of the receiving groove 321 matches the test piece 4, for example, it is a V-shaped or U-shaped groove, to ensure that the test piece 4 does not move during the torsion process, thereby accurately transmitting the torsional force; Compared with the prior art, the cooperation between the receiving groove 321 and the support groove 311 restricts the device to a predetermined position, avoiding shaking or displacement during the detection process and improving the repeatability and reliability of the detection.

[0024] Preferably, the rotating module 2 includes a rotating shaft 21; A limit groove 211 is provided at one end of the rotating shaft 21; Rotating shaft 21 is movable relative to the test piece 4; After the rotating shaft 21 is moved and the limiting groove 211 is moved into place, the inner bottom wall of the limiting groove 211 abuts against the test piece 4, and the inner side wall of the limiting groove 211 abuts against the test piece 4, forming a fixed circumferential rotation.

[0025] like Figure 1 The rotating shaft 21 shown moves to engage the limiting groove 211 with a part of the structure (such as a contact or a contact bridge) of the test piece 4. The inner bottom wall of the limiting groove 211 abuts against the test piece 4 to provide axial fixation, and the inner side wall abuts against the test piece 4 to provide circumferential fixation, thereby forming circumferential rotation fixation of the test piece 4. When the rotating shaft 21 rotates, the limiting groove 211 is in close contact with the test piece 4, ensuring that the test piece 4 rotates synchronously, thereby accurately transmitting torque in the torsion test; Compared with the prior art, the groove depth of the limiting groove 211 is fixed so that the inner side wall of the limiting groove 211 abuts against the test piece 4 each time, thereby ensuring that the rotating shaft 21 drives the test piece 4 to rotate in the same position each time, reducing or eliminating the error caused by inconsistent clamping positions during manual twisting operation.

[0026] Preferably, the base 1 is provided with a first limiting block 11 and a second limiting block 12; The rotating shaft 21 is also provided with a first abutting member 212; The first limiting block 11 and the second limiting block 12 are located on both sides of the first contact member 212, and cooperate to limit the maximum rotation angle of the rotating shaft 21.

[0027] like Figure 3 As shown, the first limiting block 11 and the second limiting block 12 are fixedly mounted on the base 1, and the first abutting member 212 is mounted on the rotating shaft 21. When the rotating shaft 21 rotates, the first abutting member 212 will abut against the first limiting block 11 or the second limiting block 12, thereby limiting the maximum rotation angle of the rotating shaft 21. When testing the contact welding strength of the contact assembly, this rotation angle is generally ±90°. Meanwhile, the first limiting block 11 and the second limiting block 12 can be telescopic. The rotation angle can be adjusted by adjusting the length of the first limiting block 11 and the second limiting block 12. The rotation angle can also be adjusted by loading and unloading the first limiting block 11 and the second limiting block 12 of different lengths.

[0028] Preferably, the rotating module 2 includes a second abutment 213; The first contact member 212 and the second contact member 213 are disposed at both ends of the rotating shaft 21 and are used to limit the maximum movement path of the rotating shaft 21 relative to the base 1.

[0029] like Figure 1 As shown, the first contact member 212 and the second contact member 213 are located at the two ends of the rotating shaft 21, respectively, and cooperate with the structure (such as the stop block) on the base 1 to limit the maximum movement path of the rotating shaft 21 in the axial direction, and prevent the movement path of the rotating shaft 21 from being mismatched with the positioning module 3 and the test piece 4; If the movement path is too short, it will be unable to contact the part under test 4. If the movement path is too long, the force-applying component of the rotating shaft 21 will be far away from the test piece 4, increasing the difficulty of operation. At the same time, the excessive force application length will cause damage to the rotating shaft 21. At the same time, the lack of restrictions on the movement path may cause the rotating shaft 21 to detach from the base 1 during operation, or to accidentally apply an axial force to the test piece 4 when applying rotational force. Compared with the prior art, the rotating shaft 21 always stays within a predetermined range during the movement, which improves the stability and safety of the device; When the rotating shaft 21 moves, the first contact member 212 and the second contact member 213 come into contact with the base 1, forming a hard stop point to avoid accidental displacement.

[0030] Preferably, the positioning module 3 is mounted on the base 1; The maximum movement path of the rotating shaft 21 relative to the base 1 corresponds to the position of the positioning module 3, so as to fix the test piece 4 and cooperate to twist the test piece 4.

[0031] like Figure 1 As shown, the positioning module 3 can be fixed to the base 1 by bolts or clips. The maximum movement path of the rotating shaft 21 is aligned with the position of the positioning module 3, ensuring that when the rotating shaft 21 moves to the corresponding position, it can be accurately connected to the test piece 4 on the positioning module 3 to form a fixed position and apply torsional force. By mounting the rotating module 2 and the positioning module 3 on the base 1, the rotating module 2 and the positioning module 3 can be pre-coordinated in their working state, or mounting holes can be reserved on the base 1 for the rotating module 2 and the positioning module 3 to be installed, thereby avoiding errors caused by temporary installation during testing and improving the accuracy and efficiency of testing.

[0032] The testing device for the contact welding strength of the contact assembly adopts the testing device described above. The testing device is used to test the contact welding strength of the contact assembly.

[0033] The testing device is used to test the contact welding strength of the contact assembly. The test piece 4 is a contact assembly, including contacts and contact bridges. The contact assembly is fixed by the positioning module 3. The rotating shaft 21 moves so that its limiting groove 211 is engaged with the welding position of the contact assembly. After confirming that the position of the limiting groove 211 is in place with the contact assembly, the rotating shaft 21 is rotated to rotate the contact assembly ±90°. Then the rotated contact assembly is removed and the state of the contact is observed to confirm whether the contact has fallen off or broken. This is used to test the welding strength of the contact assembly and reduce or eliminate measurement errors caused by inconsistent clamping positions and differences in personnel techniques during manual twisting.

[0034] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A detection device, characterized in that, It includes a base, a rotating module mounted on the base, and a positioning module that cooperates with the rotating module; The test piece is mounted on the positioning module; The rotating module is movable relative to the test piece, and after moving, it connects with part of the test piece to form a fixed circumferential rotation. The positioning module fixes the part to be tested and, together with the rotation module, twists the part to be tested.

2. The detection device according to claim 1, characterized in that, The positioning module includes a base and a support block; The base is provided with a support groove for inserting or removing the test piece; The support block is slidably connected to the base; After the support block moves, it comes into contact with the test piece, which is used to fix the test piece in conjunction with the support groove.

3. The detection device according to claim 2, characterized in that, The support block is provided with a receiving groove; The receiving groove accommodates part of the test piece and cooperates with the support groove to form a fixed shape for circumferential rotation.

4. The detection device according to claim 1, characterized in that, The rotation module includes a rotation shaft; A limit groove is provided at one end of the rotating shaft; The rotating shaft is movable relative to the test piece; After the rotating shaft is moved and the limiting groove is moved into place, the inner bottom wall of the limiting groove abuts against the test piece, and the inner side wall of the limiting groove abuts against the test piece, forming a fixed circumferential rotation.

5. The detection device according to claim 4, characterized in that, The base is provided with a first limiting block and a second limiting block; The rotating shaft is also provided with a first abutting element; The first limiting block and the second limiting block are located on both sides of the first contact member, and cooperate to limit the maximum rotation angle of the rotating shaft.

6. The detection device according to claim 5, characterized in that, The rotating module includes a second abutting element; The first and second abutments are disposed at both ends of the rotating shaft and are used to limit the maximum movement path of the rotating shaft relative to the base.

7. The detection device according to claim 6, characterized in that, The positioning module is mounted on the base; The maximum movement path of the rotating shaft relative to the base corresponds to the position of the positioning module, so as to fix the test piece and cooperate to twist the test piece.

8. A device for detecting the welding strength of contact points in contact assemblies, characterized in that, The detection device described in any one of claims 1-7 is used to detect the contact welding strength of the contact assembly.

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