Test clamp capable of rapidly replacing test plug
By designing a test fixture that allows for quick replacement of test plugs, the problems of low testing efficiency and high cost in socket panel production have been solved, achieving efficient socket panel testing and high utilization of automated equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAGER ELECTRICHUIZHOUCO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, different socket structure types need to be manually tested during the production of socket panels, resulting in low testing efficiency, high cost, and unsaturated utilization of automated equipment.
Design a test fixture for quick-change test plugs, including a connecting plate, a positioning snap-fit structure, and a test conduction mechanism. The test plugs can be quickly changed and unloaded through a lifting rod and a flexible copper pin, simplifying the testing process.
It improved testing efficiency, reduced manufacturing costs, decreased equipment investment, increased the utilization rate of automated equipment, and simplified the replacement process of socket panels.
Smart Images
Figure CN224286957U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of structural applications in the machinery industry, specifically to a test fixture for quick-change test plugs. Background Technology
[0002] Currently, the level of automation in socket panel production is increasing. However, when different socket structures are involved, manual testing using corresponding manual testing machines is still required. Frequent daily changes to test models necessitate the constant transport and installation of these manual testing machines on the production line. Furthermore, these manual testing machines occupy significant storage space, while existing automated equipment is not being utilized at its full capacity. This testing method not only wastes substantial resources but also results in extremely low production efficiency, which is inconsistent with the requirements for rapid production changeovers. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model solves the issues of frequent test machine replacement, low testing efficiency, and high testing costs by providing a test fixture for quick test plug replacement.
[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a test fixture for quick-change of test plugs, including a connecting plate, with a slot for fixing the fixture on the upper surface of the connecting plate. This slot facilitates fixing the entire test fixture to the machine equipment. A positioning latching structure for connecting the test plug is provided on the left side of the slot, and a test conduction mechanism for connecting to the tester is provided on the right side of the slot. The positioning latching structure includes, from top to bottom, a handle, a central shaft connecting rod, a U-shaped positioning block, a spring, and a positioning pin. The lower end of the central shaft connecting rod has an inverted protrusion for engaging the positioning block. The lower surface of the connecting plate has an inverted dovetail groove for engaging the test plug, and the inverted dovetail groove also has a spring through hole for accommodating the spring.
[0005] Further: In the aforementioned test fixture for quick-change test plugs, the lower end of the carrying lever is provided with threads for easy connection to the central shaft, and these threads connect to the central shaft connecting rod. The upper end of the carrying lever is provided with a button cap for easy pulling, facilitating the removal of the test plug mechanism by the operator. The positioning pin is a three-stage crimping pin, and the spring is sleeved on the first-stage edge of the positioning pin. The protrusion at the lower end of the central shaft connecting rod is used to limit the movement of the carrying lever after it is pressed down and rotated 90 degrees using a U-shaped positioning block. The protrusion at the lower end of the central shaft is crimped with the positioning pin by a spring.
[0006] The test conduction mechanism includes a knife-shaped copper terminal block electrically connected to the tester and a flexible copper pin electrically connected to the test plug. A wiring hole for connecting to the tester's wires is provided at the handle of the copper terminal block, and a pin positioning hole for accommodating the flexible copper pin is provided at the lower end of the knife body. The copper terminal blocks are arranged in three parallel pieces. A chair-shaped insulator is provided at the back end of the copper terminal block. An electrical isolation plate is provided on the insulator. The flexible copper pin receives the input current from the test plug mechanism and outputs it to the test equipment through the copper terminal block. Utilizing the elasticity of the flexible copper pin, good contact with the copper terminal block of the test plug mechanism is ensured. The flexible copper pin is inserted into the pin positioning hole and assembled through an interference fit.
[0007] Compared with existing technologies, the aforementioned quick-change test plug test fixture includes a connecting plate. A slot for fixing the fixture is provided on the upper surface of the connecting plate. A positioning latching structure for connecting the test plug is provided on the left side of the slot, and a test conduction mechanism for connecting the tester is provided on the right side of the slot. The positioning latching structure, from top to bottom, includes a handle, a central connecting rod, a U-shaped positioning block, a spring, and a positioning pin. The lower end of the central connecting rod has an inverted protrusion for engaging the positioning block. The lower surface of the connecting plate has an inverted dovetail groove for engaging the test plug, and the inverted dovetail groove also has a spring through hole for accommodating the spring. In automated testing, there is no need to change the tester; only the test fixture of this invention is needed to change the test plug to match different socket panels. Furthermore, during the test plug change process, simply pinch the button on the handle and lift it upwards to release the positioning. The test plug mechanism, under the elastic force of the elastic copper pin, automatically pushes it out, thus achieving quick unloading of the test plug. Therefore, the technical effects of this utility model are as follows:
[0008] 1. High mechanical strength, wear-resistant, and long service life.
[0009] 2. Reduce equipment investment; for different socket panels, only one matching test plug needs to be copied.
[0010] 3. When the above-mentioned fixtures are used in conjunction with current automated equipment, they can replace the current manual testing required due to differences in product structure, while improving the utilization rate of automated equipment and reducing manufacturing costs.
[0011] 4. The test plug's quick unloading function barely delays production line changeover time and is simple and convenient to operate. Attached Figure Description
[0012] Figure 1 This is a simplified structural diagram of the test fixture for quick-change test plugs according to this utility model;
[0013] Figure 2 This is an exploded view of the test fixture structure for quick-change test plugs according to this utility model;
[0014] Figure 3 An exploded view of the structure of the test plug for an example (three-wire test plug);
[0015] Figure 4 The test fixture is assembled for the example. Figure 3 A simplified structural diagram of the test plug;
[0016] The components include: 1. Connecting plate, 2. Slot, 3. Hand lever, 4. Central shaft connecting rod, 5. Positioning block, 6. Spring, 7. Positioning pin, 8. Inverted protrusion, 9. Inverted dovetail groove, 10. Spring through hole, 11. Thread, 12. Button cap, 13. Wiring copper terminal, 14. Elastic copper pin, 15. Wiring hole, 16. Pin positioning hole, 17. Insulator, 18. Electrical isolation plate, 19. Dovetail connecting block, 20. Plug top cover, 21. Plug bottom shell, 22. Dovetail protrusion, 23. Socket positioning hole, 24. Dovetail bevel, 25. Three-pole metal plug, 26. Side hole, 27. Contact copper post. Detailed Implementation
[0017] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0018] like Figure 1 , 2 A test fixture for quick-change test plugs includes a connecting plate 1. A slot 2 for fixing the fixture is provided on the upper surface of the connecting plate. A positioning latching structure for connecting the test plug is provided on the left side of the slot, and a test conduction mechanism for connecting to a test instrument is provided on the right side of the slot. The positioning latching structure includes, from top to bottom, a handle 3, a central shaft connecting rod 4, a U-shaped positioning block 5, a spring 6, and a positioning pin 7. The lower end of the central shaft connecting rod has an inverted protrusion 8 for engaging the positioning block. The lower surface of the connecting plate has an inverted dovetail groove 9 for engaging the test plug, and the inverted dovetail groove also has a spring through hole 10 for accommodating the spring 6. The lower end of the handle 3 has a thread 11 for easy connection with the central shaft. The upper end of the handle 3 has a button cap 12 for easy pulling. The positioning pin 7 is a three-stage crimp pin, and the spring is sleeved on the first-stage edge of the positioning pin 7. The test continuity mechanism includes a knife-shaped copper terminal block 13 electrically connected to the tester and a flexible copper pin 14 electrically connected to the test plug. A wiring hole 15 for connecting to the tester's wires is provided at the handle of the copper terminal block, and a pin positioning hole 16 for accommodating the flexible copper pin 14 is provided at the lower end of the blade. The copper terminal blocks 13 are arranged in three parallel pieces. A chair-shaped insulator 17 is provided at the back end of the copper terminal block. An electrical isolation plate 18 is provided on the insulator.
[0019] During operation, the test plug of this embodiment is as follows: Figure 3As shown, the test plug that matches the three-wire socket panel includes an upper dovetail connecting block 19, a plug cover 20, and a plug bottom shell 21. The front of the dovetail connecting block has a dovetail protrusion 22 that mates with the dovetail groove 9 of the connecting plate. The dovetail protrusion 22 has a socket positioning hole 23, and the positioning pin 7 is inserted into the socket positioning hole 23 to achieve positioning. The dovetail protrusion 22 has a dovetail bevel 24, which pushes the positioning pin 7 upward to avoid obstruction. The body also has triangularly distributed through holes for screw installation. The plug cover 20 is made of insulating material and has a flat design. Its body has triangularly distributed through holes for screw installation. This embodiment is an L / N / E three-pole metal plug 25. Different products have different standard specifications. The plug bottom shell 21 is made of insulating material, and its plane has holes for installing the L / N / E pole metal plug 25. The shape of the hole structure varies depending on the plug. The head and bottom shell 21 has three side holes 26 for mounting contact copper posts 27, and its L / N / E three-pole metal plugs are respectively connected to their corresponding L / N / E contact copper posts 27.
[0020] Connect the test fixture to the test plug as follows Figure 4 As shown, the entire working process is as follows:
[0021] Loading test plug mechanism: One end with the dovetail bevel 24 faces the inverted dovetail groove 9 of this embodiment, and then continue to push the test plug along the alignment direction. During this time, the dovetail bevel 24 will push the positioning pin 7 to move upward to avoid it, while continuing to compress the spring 6 until the positioning pin 7 is heard to fall into the socket positioning hole 23. This indicates that the test plug is assembled in place. The principle of this is to use the elastic force of the compressed spring 6 to push the positioning pin into the socket positioning hole 23 to achieve the positioning of the test plug.
[0022] Test Procedure: After the test plug is assembled, its contact copper post 27 compresses the elastic copper pin 14, achieving a stable conductor connection. The conduction path is: socket panel → test plug → contact copper post 27 → elastic copper pin 14 → wiring copper terminal 13 → to the test equipment, thus completing the test.
[0023] Test plug unloading mechanism: When the test plug needs to be unloaded, simply pinch the button cap 12 of the handle and lift it upwards to release the position. The test plug mechanism will automatically push it out under the elastic force of the elastic copper pin 14, thus achieving quick unloading of the test plug.
[0024] Closing the positioning mechanism: During normal operation, the minimum position of the inverted protrusion 8 of the central shaft connecting rod can just pass through the "U"-shaped notch gap of the positioning block 5; however, when the device needs to be repaired, its positioning function needs to be closed. The working method is as follows: pull the button cap 12 of the rod upward and rotate it 90 degrees. The handle 3 drives the central shaft connecting rod 4 to rotate 90 degrees. Then, the inverted protrusion 8 of the central shaft connecting rod will interlock with the two sides of the "U"-shaped structure of the positioning block, thereby preventing the positioning pin from falling, thus realizing the closure of the positioning mechanism function.
[0025] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is not necessary to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A test fixture for quick change test pinnings comprising a connection plate (1), characterized in that: A slot (2) for fixing the fixture is provided on the upper end face of the connecting plate. A positioning snap-fit structure for connecting the test plug is provided on the left side of the slot, and a test conduction mechanism for connecting the tester is provided on the right side of the slot. The positioning and locking structure includes, from top to bottom, a handle (3), a central shaft connecting rod (4), a U-shaped positioning block (5), a spring (6), and a positioning pin (7). The lower end of the central shaft connecting rod is provided with an inverted protrusion (8) for locking the positioning block. The lower end face of the connecting plate is provided with an inverted dovetail groove (9) for snapping in the test plug, and the inverted dovetail groove is also provided with a spring through hole (10) for accommodating the spring (6).
2. The test fixture for quick-change test plugs according to claim 1, characterized in that; The lower end of the handle (3) is provided with threads (11) for easy connection with the central shaft.
3. The test fixture for quick-change test plugs according to claim 2, characterized in that; The upper end of the handle (3) is provided with a button cap (12) for easy pulling of the handle.
4. The test fixture for quick-change test plugs according to claim 3, characterized in that; The positioning pin (7) is a three-stage crimping pin, and the spring is sleeved on the first step edge of the positioning pin (7).
5. The test fixture for quick-change test plugs according to claim 4, characterized in that; The test conduction mechanism includes a knife-shaped copper terminal (13) that is electrically connected to the tester and an elastic copper pin (14) that is electrically connected to the test plug.
6. The test fixture for quick-change test plugs according to claim 5, characterized in that; A wiring hole (15) for connecting to the tester wire is provided at the handle of the copper terminal, and a pin positioning hole (16) for accommodating the elastic copper pin (14) is provided at the lower end of the blade body.
7. The test fixture for quick-change test plugs according to claim 6, characterized in that: The copper terminals (13) are three pieces arranged in parallel.
8. The test fixture for quick-change test plugs according to claim 7, characterized in that: The back of the copper terminal is provided with a chair-shaped insulator (17).
9. The test fixture for quick-change test plugs according to claim 8, characterized in that: An electrical isolation plate (18) is provided on the insulator.