Withstand voltage test fixture for fuse seat

Abstract

The utility model relates to a withstand voltage test fixture of a fuse seat, which is characterized in that the withstand voltage test fixture comprises an insulating base and an insulating upper cover, the insulating base is provided with a plurality of accommodating grooves for placing the fuse seat, and the accommodating grooves are internally provided with an upper metal sheet and a lower metal sheet which are respectively contacted with an upper contact surface and a lower contact surface of the fuse seat. A metal pressing block used for conducting the upper metal sheets is arranged in the insulating upper cover, the lower metal sheets are connected through conductive pieces, and a positioning mechanism is arranged between the insulating base and the insulating upper cover. By adopting the technical scheme, the efficiency is high, the stability is high, and the test is more accurate; the live wire is connected with the lower metal sheet, the zero wire is connected with the metal pressing block, after the fuse seat is placed in, the insulating upper cover is covered, accurate connection between the insulating base and the insulating upper cover is ensured through the positioning mechanism, stable conduction between the metal pressing block and the upper metal sheet is ensured, operation is simple, and use is convenient. And the insulating base and the insulating upper cover are made of insulating materials, so that the insulating property is strong, and the safety is high.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and more specifically to a withstand voltage test fixture for a fuse holder. Background Technology

[0002] As a crucial component in electrical equipment, the fuse holder contains conductors at different potentials, such as between the fuse terminals and the casing, or between terminals of different phases. Withstand voltage testing simulates potential overvoltage conditions during actual operation, detecting whether the fuse holder's insulation materials (such as the plastic casing and insulating bushing) can withstand the corresponding voltage without breakdown. Poor insulation performance can lead to electrical breakdown under normal operating voltage or overvoltage, causing short circuits and safety accidents. Existing withstand voltage testing equipment for fuse holders suffers from drawbacks such as large size, complex structure, heavy weight, and low efficiency. Utility Model Content

[0003] In summary, to overcome the shortcomings of the prior art, this utility model provides a withstand voltage test fixture for fuse holders.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a withstand voltage test fixture for a fuse holder, characterized in that: it includes an insulating base and an insulating top cover; the insulating base is provided with a plurality of receiving grooves for placing the fuse holder; the receiving grooves are provided with upper and lower metal pieces for contacting the upper and lower contact surfaces of the fuse holder respectively; the insulating top cover is provided with a metal pressure block for conducting the plurality of upper metal pieces; the lower metal pieces are connected to each other by conductive components; and a positioning mechanism is provided between the insulating base and the insulating top cover.

[0005] By adopting the above technical solution, compared with existing durability testing equipment, this application can simultaneously perform withstand voltage tests on multiple fuse holders, which is highly efficient. It also features a receiving groove for easy placement of the fuse holder, ensuring stability and more accurate testing without shifting when the insulating cover is on. The live wire is connected to the lower metal plate, and the neutral wire is connected to the metal pressure block. After placing the fuse holder, the insulating cover is closed, and a positioning mechanism ensures precise connection between the insulating base and the insulating cover, guaranteeing stable conductivity between the metal pressure block and the upper metal plate. The fuse holder is tested by clicking the start button on the tester. The operation is simple and convenient. Both the insulating base and the insulating cover are made of insulating material, providing strong insulation and high safety.

[0006] The present invention further comprises: the positioning mechanism including a positioning post disposed on an insulating base and a positioning recess disposed inside an insulating top cover, the positioning recess being adapted to the positioning post, the number of positioning posts being two or more, and the number and position of the positioning recesses corresponding to the positioning posts.

[0007] By adopting the above technical solution, the insulating cover can be installed quickly and easily, with a simple structure, convenient operation, and high stability.

[0008] The present invention further includes: the insulating base is provided with a receiving channel for accommodating conductive components, and multiple receiving slots are connected through the receiving channel to form a receiving cavity, wherein the receiving channel and the receiving slots have the same depth.

[0009] By adopting the above technical solution, conductive components can be connected in different shapes such as conductive sheets or conductive wires. The setting of the receiving channel facilitates the flat connection of conductive components without ups and downs, making the connection more stable, the test more accurate, and less prone to problems.

[0010] The present invention further comprises: the receiving cavity including multiple receiving slots arranged in N rows and M columns, with equal spacing between receiving slots in the same row, where N is an integer ≥2 and M is an integer ≥3; the number of metal pressure blocks is N, each metal pressure block pressing on the upper metal sheet arranged in the corresponding row; the metal pressure blocks are connected by connecting lines, each connecting line including a first connecting end connected to the metal pressure block and a first terminal provided outside the insulating upper cover; the conductive element including a second connecting segment connected to each lower metal sheet and a second terminal provided outside the insulating base.

[0011] By adopting the above technical solution, space utilization is rationally planned, and detection efficiency is effectively improved. Multiple upper metal plates are connected by connecting lines and metal pressure blocks, and multiple lower metal plates are connected by conductive components. The structure is simple and highly stable.

[0012] The present invention further includes: wiring holes for the first and second terminals to extend from both sides of the insulating top cover.

[0013] By adopting the above technical solution, it is easy to quickly connect to the live and neutral wires of the detector, and the structure is simple and easy to operate.

[0014] The present invention further includes the following features: the insulating cover has multiple connecting holes, the metal pressure block has multiple connecting screw holes on the side corresponding to the insulating cover, and the insulating cover and the metal pressure block are detachably connected by multiple fasteners.

[0015] By adopting the above technical solution, it is easy to assemble and replace quickly. The fastener connection ensures high stability. The metal pressure block and the insulating cover are assembled as a whole, making it convenient to use.

[0016] The present invention further includes: a spring is provided between the bottom wall of the receiving groove and the lower metal sheet, and a mounting recess for accommodating the spring is provided in the receiving groove.

[0017] By adopting the above technical solution, the spring can absorb the tolerance of the fuse holder. When the insulating cover drives the metal pressure block to press on the upper metal plate, the spring ensures that the upper and lower metal plates are tightly fitted with the fuse holder, avoiding poor contact caused by the tolerance of the fuse holder and improving the accuracy of the test.

[0018] The present invention further includes: a recess in the middle of the fuse holder, the recess having a countersunk hole, and a metal plug for insertion into the countersunk hole in the receiving groove. The metal plug includes an installation end and a conductive end, the conductive end passing through the countersunk hole and electrically connected to the lower metal plate.

[0019] By adopting the above technical solution, since there is a recess in the middle of the fuse holder, there is a large gap between the middle of the upper current strip and the recess. A metal plug is set to be electrically connected to the lower metal strip to balance the uniform current magnetic field, so that the recess of the fuse holder can also receive current for detection, making the detection more thorough and accurate.

[0020] The present invention further includes: an avoidance hole is provided at the position of the lower metal sheet corresponding to the conductive end.

[0021] By adopting the above technical solution, the mounting end protrudes higher than the mounting countersunk hole when the metal plug is too long and comes into contact with the lower metal plate. By setting a clearance hole, the installation of the metal plug is more stable. The clearance hole is very shallow and the distance between it and the conducting end is very small. Current can still be conducted even when there is no need for complete contact.

[0022] The present invention further includes: the upper metal sheet is provided with mounting holes that are adapted to the connecting posts of the fuse holder.

[0023] By adopting the above technical solution, the lower metal sheet is set at the bottom of the receiving groove, and the inner wall of the receiving groove limits the lower metal sheet. The upper metal sheet is aligned with the connecting post through the mounting hole and inserted above the fuse holder. The upper metal sheet is not easy to deviate, which improves the stability of the detection. Attached Figure Description

[0024] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0025] Figure 2 This is a partial exploded view of an embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional view of an embodiment of the present utility model.

[0027] Figure 4 This is a perspective view of the insulating top cover of an embodiment of the present utility model.

[0028] Figure 5 This is a partial three-dimensional view of an embodiment of the present utility model.

[0029] The labels in the diagram have the following meanings: 1. Insulating base, 11. Receiving groove, 111. Mounting recess, 12. Positioning post, 13. Receiving channel, 2. Insulating top cover, 21. Positioning recess, 22. Wiring hole, 23. Connecting hole, 3. Metal sheet, 31. Clearance hole, 32. Mounting hole, 4. Metal pressure block, 41. Connecting screw hole, 5. Conductive component, 51. Second connecting segment, 52. Second terminal, 6. Connecting wire, 61. First connecting end, 62. First terminal, 7. Fastener, 8. Metal plug, 81. Mounting end, 82. Conductive end, 9. Spring. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the examples. These examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0032] Reference Appendix Figure 1-5 A withstand voltage test fixture for a fuse holder, characterized in that it includes an insulating base 1 and an insulating top cover 2. The insulating base 1 is provided with a plurality of receiving grooves 11 for placing the fuse holder. The receiving grooves 11 are provided with upper and lower metal pieces 3 for contacting the upper and lower contact surfaces of the fuse holder respectively. The insulating top cover 2 is provided with a metal pressure block 4 for conducting the plurality of upper metal pieces 3. The lower metal pieces 3 are connected to each other by a conductive element 5. A positioning mechanism is provided between the insulating base 1 and the insulating top cover 2.

[0033] This embodiment further includes the following configuration: the positioning mechanism includes a positioning post 12 disposed on the insulating base 1 and a positioning recess 21 disposed in the insulating top cover 2. The positioning recess 21 is adapted to the positioning post 12. There are two or more positioning posts 12. The number and position of the positioning recess 21 correspond to the positioning posts 12.

[0034] In this utility model's technical solution, the positioning mechanism can also employ positioning posts 12 disposed within the insulating upper cover 2, with positioning recesses 21 disposed on the insulating base 1. The positioning posts 12 can be disposed on both sides of the insulating base 1, or at the four corners of the insulating base 1.

[0035] In this embodiment, the insulating base 1 is further provided with a receiving channel 13 for accommodating the conductive component 5. The receiving channel 13 connects multiple receiving grooves 11 to form a receiving cavity. The receiving channel 13 and the receiving grooves 11 have the same depth.

[0036] This embodiment further includes the following configuration: the accommodating cavity comprises multiple accommodating slots 11 arranged in N rows and M columns, with equidistant spacing between accommodating slots 11 in the same row, where N is an integer ≥2 and M is an integer ≥3. The number of metal pressure blocks 4 is N, and the metal pressure blocks 4 are respectively pressed on the upper metal sheets 3 arranged in the corresponding row. The metal pressure blocks 4 are connected by connecting lines 6. The connecting lines 6 include a first connecting end 61 connected to the metal pressure blocks 4 and a first terminal 62 disposed outside the insulating upper cover 2. The conductive element 5 includes a second connecting segment 51 connected to each lower metal sheet 3 and a second terminal 52 disposed outside the insulating base 1.

[0037] This embodiment further includes the following: the insulating cover 2 has wiring holes 22 on both sides for the first terminal 62 and the second terminal 52 to extend out.

[0038] This embodiment further includes the following configuration: the insulating cover 2 is provided with multiple connection holes 23, and the metal pressure block 4 is provided with multiple connection screw holes 41 on one side of the insulating cover 2. The insulating cover 2 and the metal pressure block 4 are detachably connected by multiple fasteners 7.

[0039] In this embodiment, a spring 9 is provided between the bottom wall of the receiving groove 11 and the lower metal sheet 3, and a mounting recess 111 for accommodating the spring 9 is provided in the receiving groove 11.

[0040] This embodiment further includes: a recess in the middle of the fuse holder, the recess having a countersunk hole, and a metal plug 8 for insertion into the countersunk hole in the receiving groove. The metal plug 8 includes an installation end 81 and a conductive end 82, the conductive end 82 passing through the countersunk hole and electrically connected to the lower metal piece 3.

[0041] In this embodiment, a clearance hole 31 is provided at the position of the lower metal sheet 3 corresponding to the conductive end 82.

[0042] This embodiment further includes the following feature: the upper metal sheet 3 is provided with mounting holes 32 that are compatible with the connecting posts of the fuse holder.

[0043] In this utility model, the upper and lower metal sheets 3 can be made of materials such as copper or iron. They can be made of the same material or different materials.

[0044] In the description of this utility model, it should be noted that the terms "upper" and "lower," 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 do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The aforementioned "between" does not only refer to the orientation or position, but also includes the meaning of the interaction between different parts.

[0045] Although this document frequently uses terms such as insulating base 1, receiving groove 11, mounting recess 111, positioning post 12, receiving channel 13, insulating cover 2, positioning recess 21, wiring hole 22, connecting hole 23, metal sheet 3, clearance hole 31, mounting hole 32, metal pressure block 4, connecting screw hole 41, conductive element 5, second connecting segment 51, second terminal 52, connecting wire 6, first connecting end 61, first terminal 62, fastener 7, metal plug 8, mounting end 81, conductive end 82, and spring 9, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A withstand voltage test fixture for a fuse holder, characterized in that: The device includes an insulating base and an insulating top cover. The insulating base is provided with multiple receiving grooves for placing fuse holders. The receiving grooves are provided with upper and lower metal plates for contacting the upper and lower contact surfaces of the fuse holders, respectively. The insulating top cover is provided with a metal pressure block for conducting the multiple upper metal plates. The lower metal plates are connected by conductive components. A positioning mechanism is provided between the insulating base and the insulating top cover.

2. The withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: The positioning mechanism includes positioning posts disposed on an insulating base and positioning recesses disposed inside an insulating top cover. The positioning recesses are adapted to the positioning posts. There are two or more positioning posts, and the number and position of the positioning recesses correspond to the positioning posts.

3. The withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: The insulating base is provided with a receiving channel for accommodating conductive components. Multiple receiving slots are connected through the receiving channel to form a receiving cavity. The receiving channel and the receiving slot have the same depth.

4. The withstand voltage test fixture for a fuse holder according to claim 3, characterized in that: The accommodating cavity includes multiple accommodating slots arranged in N rows and M columns, with equal spacing between accommodating slots in the same row. N is an integer ≥2, and M is an integer ≥3. The number of metal pressure blocks is N, and the metal pressure blocks are respectively pressed on the upper metal plates arranged in the corresponding row. The metal pressure blocks are connected by connecting lines. The connecting lines include a first connecting end connected to the metal pressure block and a first terminal located outside the insulating upper cover. The conductive element includes a second connecting segment connected to each lower metal plate and a second terminal located outside the insulating base.

5. The withstand voltage test fixture for a fuse holder according to claim 4, characterized in that: The insulating top cover has wiring holes on both sides for the first and second terminals to extend out.

6. The withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: The insulating cover is provided with multiple connection holes, and the metal pressure block is provided with multiple connection screw holes on the side corresponding to the insulating cover. The insulating cover and the metal pressure block are detachably connected by multiple fasteners.

7. The withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: A spring is provided between the bottom wall of the receiving groove and the lower metal sheet, and a mounting recess for accommodating the spring is provided in the receiving groove.

8. The withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: The fuse holder has a recess in the middle, and the recess has a mounting countersunk hole. The receiving groove also has a metal plug for insertion into the mounting countersunk hole. The metal plug includes a mounting end and a conductive end. The conductive end passes through the mounting countersunk hole and is electrically connected to the lower metal plate.

9. The withstand voltage test fixture for a fuse holder according to claim 8, characterized in that: The lower metal sheet is provided with a clearance hole at the position corresponding to the conductive end.

10. A withstand voltage test fixture for a fuse holder according to claim 1, characterized in that: The upper metal sheet is provided with mounting holes that are compatible with the connecting posts of the fuse holder.

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