Plug for curing fuse

Abstract

The utility model relates to the technical field of fuse curing, in particular to a plug for curing a fuse, which comprises a first cylinder and a first bottom. The first bottom is arranged at the bottom of the first column body, the first bottom is used for being pressed into a sand filling hole of a fuse cover plate, and at least one first groove is formed in the first column body and the first bottom. Compared with a mesh plug dispensing mode, the sand filling hole of the fuse cover plate can be conveniently plugged, the process is simple, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuse solidification, and in particular relates to a plug used for fuse solidification. Background Art

[0002] Fuse is one of the main components used for short-circuit protection in circuits. It is composed of insulating tube, terminal, cover, fuse and arc extinguishing medium and other auxiliary materials. After the fuse product is assembled, the cover is reserved for filling sand holes to fill the fuse shell with quartz sand as arc extinguishing medium. After filling, the sand filling port is sealed with a plug. When the fuse needs to interrupt a large current, the quartz sand needs to be solidified by high-temperature steam.

[0003] At present, in the production process of fuses, since curing requires high-temperature steam circulation, mesh plugs are needed when sealing the sand filling holes in the cover plate. After assembly, the mesh holes are sealed with silicone. The process is cumbersome and takes time to dry the silicone, which seriously affects production efficiency. Utility Model Content

[0004] The utility model provides a plug for curing a fuse, which has a simple process, is convenient for sealing the sand filling hole of a fuse cover plate, and has high production efficiency.

[0005] In order to achieve the above object, the technical solution of the utility model is:

[0006] A plug for fuse curing, comprising a first column and a first bottom;

[0007] The first bottom is arranged at the bottom of the first column;

[0008] The first bottom portion is used to be pressed into the sand-filling hole of the fuse cover plate;

[0009] At least one first groove is formed on the first column and the first bottom.

[0010] Preferably, a first limiting edge is provided on the top of the first column, and the diameter of the first limiting edge is larger than the diameter of the sand filling hole of the fuse cover plate.

[0011] Preferably, it also includes a second column and a second bottom;

[0012] The second bottom is arranged at the bottom of the second column;

[0013] The second bottom portion is used to be pressed into the sand-filling hole of the fuse cover plate;

[0014] At least one second groove is integrally formed between the second column and the second bottom, and a first protrusion corresponding to the second groove is formed inside the second column.

[0015] Preferably, a third groove is integrally formed on the second bottom, and a second protrusion corresponding to the third groove is formed inside the second bottom.

[0016] Preferably, a second limiting edge is provided on the top of the second column, and the diameter of the second limiting edge is larger than the diameter of the sand filling hole of the fuse cover plate.

[0017] Technical effects and advantages of the utility model:

[0018] 1. By opening the first groove on the first column and the first bottom, when the fuse is filled with sand and the plugging operation is completed, the first column and the first bottom are pressed into the sand filling hole of the fuse cover. Due to the setting of the first groove, the exhaust function of the mesh plug can be replaced for high-temperature steam curing. After the fuse is cured, the first column is directly pressed into the sand filling hole of the fuse cover, and the sand filling hole is blocked by the complete column surface of the first column to reduce sand leakage. Compared with the mesh plug dispensing method, not only the process is simple, but also the production efficiency is greatly improved.

[0019] 2. By opening a second groove on the second column and the second bottom, the second groove forms a corresponding first protrusion on the second column, which not only facilitates pressing the second bottom into the sand filling hole of the fuse cover, but also replaces the mesh plug exhaust function for high-temperature steam curing. The process is simple and the production efficiency is high. The first protrusion can also enhance the pressure resistance of the second column and improve the product yield.

[0020] 3. The third groove and the second protrusion can further increase the compressive strength of the second column, thereby preventing the plug from breaking and popping out due to excessive internal pressure of the melt vaporization when the fuse is disconnected, thereby affecting other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a plug for fuse curing provided in Example 1 of the present application;

[0022] Figure 2 is a bottom view of a plug for fuse curing provided in Example 1 of the present application;

[0023] Figure 3 is a stereoscopic diagram of a plug for fuse curing provided in Example 2 of the present application;

[0024] Figure 4 is a bottom view of a plug for fuse curing provided in Example 2 of the present application;

[0025] Figure 5 is a schematic diagram of a half-pressed state of the plug provided in Example 2 of the present application;

[0026] Figure 6This is a schematic diagram of the fully pressed-in state of the plug provided in Example 2 of the present application.

[0027] Numbers in the figure: 1, first column; 11, first groove; 12, first limiting edge; 2, first bottom; 3, second column; 31, second groove; 32, first protrusion; 33, second limiting edge; 4, second bottom; 41, third groove; 42, second protrusion. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the embodiments given in the accompanying drawings.

[0029] Embodiment 1:

[0030] See also Figure 1 and Figure 2 As shown, a plug for fuse curing comprises a first column 1 and a first bottom 2.

[0031] The first bottom portion 2 is integrally arranged at the bottom portion of the first column 1 , and the first bottom portion 2 is used to be pressed into the sand-filling hole of the fuse cover.

[0032] At least one first groove 11 is formed on the first column 1 and the first bottom 2 . The number of the first grooves 11 can be one, two or more.

[0033] The material of the first column can be copper or stainless steel.

[0034] The cross-sectional shape of the first groove 11 can be rectangular, circular or elliptical.

[0035] The depth and width of the first groove 11 can be adjusted as required to ensure a tight fit and firm fixation between the connecting column and the sand-filling hole of the fuse cover.

[0036] In the embodiment of the present application, by opening the first groove 11 on the first column 1 and the first bottom 2, when the fuse is filled with sand and the plugging operation is completed, the first column 1 and the first bottom 2 are pressed into the sand filling hole of the fuse cover. Due to the setting of the first groove 11, the exhaust function of the mesh plug can be replaced for high-temperature steam curing. After the fuse is cured, the first column 1 is directly pressed into the sand filling hole of the fuse cover, and the sand filling hole is blocked by the complete column surface of the first column 1 to reduce sand leakage. Compared with the mesh plug dispensing method, not only is the process simple, but also the production efficiency is greatly improved.

[0037] See also Figure 1 As shown, a first limiting edge 12 is integrally formed on the top of the first column 1, and the diameter of the first limiting edge 12 is larger than the diameter of the sand filling hole of the fuse cover.

[0038] Embodiment 2:

[0039] See also Figure 3 and Figure 4 As shown, a plug for fuse curing also includes a second column 3 and a second bottom 4.

[0040] The second bottom 4 is integrally arranged at the bottom of the second column 3 , and the second bottom 4 is used to be pressed into the sand-filling hole of the fuse cover.

[0041] The second column 3 and the second bottom 4 are integrally formed with at least one second groove 31 , and the number of the second grooves 31 may be the same as or different from the number of the first grooves 11 in Example 1. Another difference is that a first protrusion 32 corresponding to the second groove 31 is formed inside the second column 3 .

[0042] In the embodiment of the present application, by opening a second groove 31 on the second column 3 and the second bottom 4, the second groove 31 forms a corresponding first protrusion 32 on the second column 3, which not only facilitates pressing the second bottom 4 into the sand-filling hole of the fuse cover, but also replaces the mesh plug exhaust function for high-temperature steam curing. The process is simple and the production efficiency is high. The first protrusion 32 can also strengthen the pressure resistance of the second column 3 to prevent the plug from breaking and popping out due to excessive internal pressure of melt vaporization when the fuse is disconnected, affecting other devices.

[0043] See also Figure 3 and Figure 4 As shown, the second bottom 4 is integrally formed with a third groove 41 , and a second protrusion 42 corresponding to the third groove 41 is formed inside the second bottom 4 .

[0044] The shape of the second protrusion 42 corresponding to the third groove 41 can be an arc surface, which can further increase the compressive strength of the second column 3 and prevent the plug from breaking and popping out due to excessive internal pressure of the melt vaporization when the fuse is disconnected, thereby affecting other devices.

[0045] A second limiting edge 33 is disposed on the top of the second column 3 , and the diameter of the second limiting edge 33 is larger than the diameter of the sand filling hole of the fuse cover.

[0046] In order to facilitate understanding of the above technical solution of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail below. Figure 5 and Figure 6 .

[0047] Working principle of this utility model:

[0048] A first groove 11 is provided on the first column 1 and the first bottom 2. When the fuse is filled with sand and the plugging operation is completed, a section of the first column 1 and the first bottom 2 with the first groove 11 is pressed into the sand filling hole of the fuse cover. Since this section has the first groove 11, the exhaust function of the mesh plug can be replaced for high-temperature steam curing. After the fuse is cured, the first column 1 is directly pressed into the sand filling hole of the fuse cover, and the sand filling hole is sealed by the complete column of the first column 1, so that the function of preventing sand leakage of the solid plug or the mesh plug can be realized, which greatly improves the production efficiency compared with the mesh plug gluing.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A plug for fuse curing, characterized in that: It comprises a first column (1) and a first bottom (2); The first bottom portion (2) is arranged at the bottom portion of the first column (1); The first bottom portion (2) is used to be pressed into the sand-filling hole of the fuse cover; At least one first groove (11) is provided on the first column (1) and the first bottom (2).

2. A plug for fuse curing according to claim 1, characterized in that: A first limiting edge (12) is provided at the top of the first column (1), and the diameter of the first limiting edge (12) is greater than the diameter of the sand filling hole of the fuse cover.

3. A plug for fuse curing according to claim 1, characterized in that: It also includes a second column (3) and a second bottom (4); The second bottom (4) is arranged at the bottom of the second column (3); The second bottom portion (4) is used to be pressed into the sand-filling hole of the fuse cover; The second column (3) and the second bottom (4) are integrally formed with at least one second groove (31), and a first protrusion (32) corresponding to the second groove (31) is formed inside the second column (3).

4. A plug for fuse curing according to claim 3, characterized in that: The second bottom (4) is integrally formed with a third groove (41), and a second protrusion (42) corresponding to the third groove (41) is formed inside the second bottom (4).

5. A plug for fuse curing according to claim 3, characterized in that: A second limiting edge (33) is provided at the top of the second column (3), and the diameter of the second limiting edge (33) is greater than the diameter of the sand filling hole of the fuse cover plate.

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