Contactor test tool

Abstract

The utility model discloses a contactor test tool, which relates to the technical field of contactor detection, and comprises a base frame, a base plate, a top plate and a vertical wall, and the base plate is connected with the top plate through the vertical wall; the adjusting screw vertically penetrates through the top plate, is provided with a locking nut in a matched manner and is connected with a lug plate; the fastening screw and the baffle are arranged on the two sides of the lower portion of the adjusting screw, and the fastening screw can horizontally rotate and move; and the stop block is positioned on the vertical wall. According to the utility model, comprehensive characteristics of semi-finished products can be tested with high efficiency and low cost, the product development time is reduced, the part scrap cost in the product development stage is effectively reduced, and the consistency of product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contactor detection, and particularly relates to a contactor test tooling. Background Art

[0002] High-voltage DC relays (or contactors) are mainly applied in the fields of new energy vehicles, energy storage converters, wind power, photovoltaic and fast charging piles. It is a circuit switch with control opening and closing functions and is the core component for power transmission in fields such as new energy vehicles and fast charging piles. The biggest difference between a high-voltage DC contactor and an ordinary air-type contactor is that the high-voltage DC contactor adopts a unique sealing technology. Generally, the contacts of the high-voltage DC contactor are sealed in a cavity through the welding of ceramics and metals (or epoxy resin), isolated from the outside air, and a specific gas (hydrogen, nitrogen, etc.) several times the atmospheric pressure is applied in the sealed cavity to obtain higher contact withstand voltage and arc extinguishing performance.

[0003] Since the contacts of the high-voltage DC contactor are in a sealed cavity, and the sealed cavity needs to be ensured through the welding process, in the process of product development and prototype verification testing, generally, it is necessary to first assemble components such as contacts, assemble and complete the welding of components such as ceramics before the comprehensive characteristics test of the sample can be carried out. For products in the initial stage of development and not yet in mass production, during the prototype testing stage, it is often necessary to optimize the product structure and design according to the test results. Therefore, on the one hand, the welding process of the high-voltage DC contactor will lead to a longer production cycle of the prototype and increase the product development time; on the other hand, the welded product components cannot be recycled. In case of design optimization, the materials of the welded components will be scrapped, increasing the waste of R & D materials and material costs. Summary of the Utility Model

[0004] Technical Problems to be Solved by the Utility Model

[0005] Aiming at the technical problem of how to quickly verify the comprehensive characteristics of products during the prototype testing stage, the utility model provides a contactor test tooling, which can efficiently and low-costly conduct comprehensive characteristics tests on semi-finished products, reduce the product development time, effectively reduce the part scrap cost during the product development stage, and improve the consistency of product quality.

[0006] Technical Solution

[0007] To solve the above problems, the technical solution provided by the utility model is as follows:

[0008] A contactor testing tooling, including a base frame, which includes a bottom plate, a top plate and a vertical wall, and the bottom plate and the top plate are connected by the vertical wall; an adjusting screw, vertically penetrating through the top plate, and is provided with a locking nut in cooperation and connected with a wiring piece; a fastening screw and a baffle plate, arranged on both sides below the adjusting screw, and the fastening screw can rotate horizontally and move; a stopper, located on the vertical wall.

[0009] The design of this contactor testing tooling can indeed improve production efficiency and reduce costs. The following are some detailed explanations of this design:

[0010] The base frame consists of a bottom plate, a top plate and a vertical wall, forming a stable framework for fixing and supporting other components. The bottom plate and the top plate are connected by the vertical wall, providing a stable platform. The adjusting screw vertically penetrates the top plate and is fixed by the locking nut. This design allows users to adjust the position of the screw according to needs to adapt to semi-finished contactors of different sizes or types. The locking nut ensures that the semi-finished contactor will not change during the test, guaranteeing the accuracy and reliability of the test. The stopper is used to limit the position of the moving contact unit of the semi-finished contactor to prevent the moving contact from deflecting during the test. After the coil is attracted, it ensures reliable connection with the adjusting screw. The wiring piece is connected to the adjusting screw and is used to introduce or lead out test signals to / from the contactor. This enables the tester to conveniently connect the test equipment without directly operating the contactor, improving safety. The fastening screw and the baffle plate are arranged on both sides below the adjusting screw. The fastening screw can rotate horizontally and move and is used to fix the contactor. The fastening screw and the baffle plate play a role in limiting the position to prevent the contactor from moving during the test. This design allows for quick replacement and positioning of different contactors, reducing the setup and adjustment time, thus improving the test efficiency. At the same time, since manual operation is reduced, the risk of part damage caused by human error is also reduced, further saving costs. By early identifying and solving problems of the contactor, the product development cycle can be shortened, avoiding expensive modifications and rework in the later stage, and effectively reducing the part scrap cost in the product development stage. In summary, the design of this contactor testing tooling not only improves the test efficiency but also reduces the production cost, which is of great significance for improving the product quality consistency and accelerating the product market launch speed.

[0011] Optionally, a positioning groove is provided on the bottom plate directly below the adjusting screw.

[0012] Setting a positioning groove on the bottom plate directly below the adjusting screw further enhances the functionality and accuracy of the contactor testing tooling. The functions of the positioning groove are mainly reflected in the following aspects:

[0013] The positioning groove can ensure that the contactor is accurately aligned when placed, meeting the preset requirements both in the central position and in the height direction. This is particularly important for contactors that require high-precision testing, as any minor deviation may lead to inaccurate test results. When the contactor is placed in the positioning groove, it becomes more stable and is less likely to displace or vibrate during the testing process. This is especially crucial for contactors that need to withstand high currents or voltages during testing, as any instability may affect their performance and even cause damage. The design of the positioning groove simplifies the installation and disassembly process of the contactor. The tester only needs to place the contactor into the positioning groove and then fix it with fastening screws, without spending extra time on complex alignment or adjustment work, greatly improving work efficiency.

[0014] Optionally, one end of the positioning groove extends to the edge of the bottom plate.

[0015] The tester only needs to place the semi-finished contactor into the positioning groove at the edge of the bottom plate and then slide the semi-finished contactor directly below the adjusting screw. Due to the presence of the top plate, direct installation would take a certain amount of time. The central design can save time and effort.

[0016] Optionally, the stoppers are two strip-shaped structures, with a gap left between the stoppers.

[0017] The stoppers are used for limiting the position of the moving contact unit of the contactor during the closing and releasing actions, preventing the moving contact unit from deflecting and ensuring that the moving contact unit can reliably make effective contact with the adjusting screw.

[0018] Optionally, the surface of the stopper is provided with a soft surface layer.

[0019] The soft surface layer prevents the stopper from scratching or damaging the semi-finished contactor.

[0020] Optionally, the fastening screw is provided with a screw seat, and the screw seat is fixedly connected to the bottom plate.

[0021] The screw seat cooperates with the fastening screw, enabling the fastening screw to be screwed in and out on the screw seat for clamping the semi-finished contactor.

[0022] Optionally, the edges of the screw seat and the baffle are rounded structures.

[0023] Sharp corners may cause injuries such as scratches or cuts during use, especially in situations where frequent operation or human contact occurs. The use of rounded corners can significantly reduce such risks and improve operator safety. From an engineering mechanics perspective, sharp corners are prone to stress concentration, which is a common cause of material fatigue and fracture. Rounded corners can disperse stress and extend the service life of components, especially for components that are subjected to repeated loads or impacts. In metal processing, the production of sharp corners often requires additional cutting or grinding processes, which not only increases manufacturing costs but may also introduce defects. In contrast, rounded corners can be achieved through one-step molding or other simpler processes, reducing manufacturing difficulty and costs.

[0024] Optionally, the adjusting screw is inserted into a waist-shaped hole of the top plate, and the waist-shaped hole accommodates the adjusting position of the adjusting screw.

[0025] The length of the waist-shaped hole determines the maximum distance that the adjusting screw can move, which means that the operator can adjust the position of the adjusting screw in a wider range according to actual needs to meet the testing needs of contactors of different sizes or specific requirements. This design improves the adaptability of the test fixture to different types of contactors. Even for contactors with slight size differences, good positioning and fixation can be achieved by fine-tuning the position of the adjusting screw, reducing the test error caused by size mismatch. Compared with the circular hole, the waist-shaped hole allows the adjusting screw to be adjusted without completely loosening or tightening it, which simplifies the adjustment process and improves work efficiency. The operator only needs to loosen the locking nut moderately to easily move the adjusting screw to the desired position and then re-tighten it. Although the adjusting screw can move in the waist-shaped hole, it can still maintain sufficient stability in the locked state to ensure that the contactor will not be displaced or shaken unnecessarily during the test, ensuring the accuracy of the test results.

[0026] Beneficial Effects

[0027] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0028] The technical solution provided by the utility model is provided with adjusting screws, fastening screws and baffles, which can adapt to contactors of different sizes or types, thereby improving the versatility of the device. The fastening screws and baffles play a limiting role, preventing the contactor from moving during the test, thereby improving the stability and safety of the test. The device can perform comprehensive characteristic tests on semi-finished products efficiently and at low cost. By identifying and resolving contactor problems at an early stage, the product development cycle can be shortened, expensive modifications and rework in the later stage can be avoided, and the test efficiency and consistency of product quality in the later production process can be improved, while reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic structural diagram of a contactor test tooling proposed for an embodiment of the present utility model;

[0030] Figure 2 Schematic structural diagram of a semi-finished contactor proposed for an embodiment of the present utility model;

[0031] Figure 3 Test schematic diagram of a contactor test tooling proposed for an embodiment of the present utility model;

[0032] 1. Base frame; 2. Fastening screw; 3. Wiring piece; 4. Locking nut; 5. Adjusting screw; 6. Stop block; 7. Baffle; 8. Base plate; 9. Positioning groove; 10. Tooling body; 11. Moving contact unit; 12. Port; 13. Electromagnetic coil unit; 20. Semi-finished contactor. Specific implementation manner

[0033] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings and embodiments.

[0034] Embodiment

[0035] Combined with the attached Figure 1 , a contactor test tooling includes a base frame 1, which includes a base plate 8, a top plate and a vertical wall, and the base plate 8 and the top plate are connected by the vertical wall; an adjusting screw 5 vertically penetrates through the top plate, and is provided with a locking nut 4 in cooperation and is connected with a wiring piece 3; a fastening screw 2 and a baffle 7 are arranged on both sides below the adjusting screw 5, and the fastening screw 2 can be rotated and moved horizontally. The base plate 8 is placed horizontally, and the vertical wall is fixedly connected to one side of the base plate 8 by screws or other connection means, and the connection positions of the vertical wall are on both sides of the vertical wall, so that the tooling has a certain height. The top edge of the vertical wall is fixedly connected to the top plate, and the base plate 8 and the top plate are arranged in parallel. The adjusting screw 5 is arranged through a kidney-shaped hole in the top plate, and the kidney-shaped hole accommodates the adjusting screw 5 to adjust its position. The kidney-shaped hole is located in the middle of the top plate and is parallel to the vertical wall, so that the adjusting screw 5 can adjust its position in the horizontal direction to adapt to semi-finished contactors 20 with different opening distances. The lower end of the adjusting screw 5 contacts the moving contact unit 11 of the semi-finished contactor 20, and its depth is controlled by the locking nut 4.

[0036] A positioning groove 9 is provided on the base plate 8 directly below the adjusting screw 5. The positioning groove 9 is strip-shaped, perpendicular to the vertical wall, one end is arc-shaped, and the other end extends to the edge of the base plate 8. The positioning groove 9 cooperates with the semi-finished contactor 20 for positioning and sliding.

[0037] A stop block 6 is provided on the vertical wall. The stop block 6 is composed of two cuboid-shaped objects, and the two stop blocks 6 are arranged in parallel. A soft surface layer is provided on the surface of the stop block 6, and the soft surface layer is rubber. The stop block 6 is of two strip-shaped structures, and there is a gap between the two stop blocks 6.

[0038] The fastening screw 2 is provided with a screw seat, and the screw seat is fixedly connected to the bottom plate 8. The screw seat and the baffle 7 are arranged oppositely, and the semi-finished contactor 20 is clamped on both sides by them.

[0039] The edges of the screw seat and the baffle 7 are of rounded corner structures.

[0040] Combined with the attached Figure 2 , the semi-finished contactor 20 includes a moving contact unit 11, a port 12 and an electromagnetic coil unit 13.

[0041] Combined with the attached Figure 3 , the moving contact unit 11 is opposite to the adjusting screw 5, and the port 12 is above the screw seat.

[0042] Testing process:

[0043] Install the semi-finished contactor 20 into the tooling body 10. First, lock the fastening screw 2, tighten the lock nut 4 to fix the semi-finished contactor 20, then adjust the opening distance values at both ends between the adjusting screw 5 and the moving contact unit 11 according to the design parameters to make it meet the design range, and then lock the lock nut 4 to prevent the adjusting screw 5 from loosening. Finally, apply a coil test voltage to the port 12 and connect the wires to test the on-off state between the two connection pieces 3 to complete the test.

[0044] The above schematically describes the present invention and its implementation manners. This description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present invention, creatively design a structural manner and an embodiment similar to this technical solution, they shall fall within the protection scope of the present invention.

Claims

1. A contactor testing tool, characterized in that: include A base frame, comprising a bottom plate, a top plate and a vertical wall, wherein the bottom plate and the top plate are connected by the vertical wall; An adjusting screw vertically penetrates the top plate and is provided with a locking nut and connected with a wiring piece; A fastening screw and a baffle are arranged on both sides below the adjusting screw, and the fastening screw can be rotated and moved horizontally; A stopper is located on the vertical wall.

2. A contactor testing tool according to claim 1, characterized in that: A positioning groove is provided on the bottom plate directly below the adjusting screw.

3. A contactor testing tool according to claim 2, characterized in that: One end of the positioning groove extends to the edge of the bottom plate.

4. A contactor testing tool according to claim 1, characterized in that: The stoppers are two strip-shaped structures, with a gap between the stoppers.

5. A contactor testing tool according to claim 4, characterized in that: The surface of the stopper is provided with a soft surface layer.

6. A contactor testing tool according to claim 1, characterized in that: The fastening screw is matched with a screw seat, and the screw seat is fixedly connected to the bottom plate.

7. A contactor testing tool according to claim 6, characterized in that: The edges of the screw seat and the baffle are rounded structures.

8. A contactor testing tool according to claim 1, characterized in that: The adjusting screw is inserted into the waist-shaped hole of the top plate, and the waist-shaped hole accommodates the adjusting position of the adjusting screw.

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