Fuse sand filling tool

Abstract

The utility model provides a fuse sand filling tool which comprises a sand filling box and a base, and the sand filling box is detachably connected with the base. The base comprises a base bottom plate, the fuse comprises a fuse terminal and a fuse shell, the base bottom plate is provided with a third terminal containing hole matched with the fuse terminal, the lower end face of the fuse shell makes contact with the upper end face of the base bottom plate, one side of the base bottom plate is provided with an equipment connecting piece, and the other side of the base bottom plate is provided with an air bag. The sand filling box comprises a sand filling box bottom plate, the periphery of the sand filling box bottom plate is provided with sand filling box side plates, the sand filling box bottom plate is provided with a first terminal containing hole matched with the fuse terminal, the sand filling box bottom plate is further provided with a sand injection structure, and the lower end of the sand injection structure is matched with a fuse sand injection hole formed in the upper end face of the fuse shell. According to the scheme, the sand filling work of a plurality of fuses can be completed at a time, the sand filling precision and efficiency of the fuses are improved, meanwhile, the performance consistency of the fuses is guaranteed, and the channel blocking probability is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fuse tooling, and specifically, to a fuse sand filling tooling. Background Technique

[0002] In the power system, as a current protection device, the fuse is used to melt the fuse wire by the heat generated by itself after the current exceeds the specified value for a period of time, so as to disconnect the circuit and prevent the circuit from being damaged due to overload or short circuit. And in the manufacturing process of the fuse, sand filling is a key step, which directly affects the performance and safety of the fuse. The traditional sand filling process mostly adopts manual operation, that is, the operator uses simple tools to fill the sand grains into the corresponding parts of the fuse. However, there are the following problems with this traditional method:

[0003] 1. Poor accuracy: It is difficult to ensure that the amount of sand grains filled each time is consistent by manual sand filling, resulting in unstable performance of the fuse.

[0004] 2. Low efficiency: The manual operation speed is slow, and the sand filling work of multiple fuses cannot be completed at one time, which cannot meet the requirements of large-scale production.

[0005] 3. Poor controllability: It is difficult to accurately control the position and density of sand filling by the traditional method, which affects the quality and reliability of the fuse.

[0006] 4. Easy to block: The traditional sand filling tool is similar to the structure of an infusion dropper, and it is easy to cause the channel of the tool to be blocked during the sand grain filling process, affecting the sand filling progress.

[0007] Therefore, it is of great significance for the fuse production industry to develop a sand filling tooling that can improve the sand filling accuracy and efficiency, and at the same time ensure the performance consistency of the fuse. Content of the Utility Model

[0008] Aiming at the defects in the prior art, the purpose of the utility model is to provide a fuse sand filling tooling, which can complete the sand filling work of multiple fuses at one time, improve the fuse sand filling accuracy and efficiency, ensure the performance consistency of the fuse, shorten the length of the sand filling tool channel, and reduce the probability of channel blockage.

[0009] To solve the above technical problems, the utility model provides a fuse sand filling tooling, including a sand filling box and a base, and the sand filling box is detachably connected to the base;

[0010] The base includes a base bottom plate for placing a fuse. The fuse includes a fuse terminal and a fuse housing. A third terminal accommodation hole matching the fuse terminal is formed on the base bottom plate. The lower end surface of the fuse housing is in contact with the upper end surface of the base bottom plate. One side of the base bottom plate is provided with a device connecting piece for fixing the fuse sand filling tooling to a vibrating device, and the other side is provided with an airbag for clamping the fuse under the action of the airbag;

[0011] The sand filling box includes a sand filling box bottom plate. Sand filling box side plates are arranged around the sand filling box bottom plate. A first terminal accommodation hole matching the fuse terminal is formed on the sand filling box bottom plate. A sand injection structure is further arranged on the sand filling box bottom plate. The lower end of the sand injection structure matches a fuse sand injection hole arranged on the upper end surface of the fuse housing and is used for transmitting sand grains in the sand filling box into the fuse housing.

[0012] Further, a guiding structure is arranged at the lower end of the sand filling box. The guiding structure includes a first guiding column and a second guiding column. The upper end of the first guiding column is detachably connected to the sand filling box. The lower end of the second guiding column is detachably connected to the base. The first guiding column is slidably connected to the second guiding column.

[0013] Further, the sand injection structure includes a sand injection hole, a transition hole and a sand injection connecting piece which are connected in sequence. The sand injection hole is formed on the upper end surface of the sand filling box bottom plate. The transition hole is formed on the lower end surface of the sand filling box bottom plate. One end of the sand injection connecting piece is embedded in the transition hole, and the other end is in contact with the fuse sand injection hole.

[0014] Further, the inner diameter of the lower end of the sand injection connecting piece is smaller than the diameter of the fuse sand injection hole.

[0015] Further, a first terminal protection cover matching the fuse terminal is further arranged in the sand filling box and is used for preventing sand grains from flowing into the gap between the fuse terminal and the first terminal accommodation hole.

[0016] Further, first fixing plates are symmetrically arranged on the lower end surface of the sand filling box bottom plate. Second fixing plates corresponding to the first fixing plates are arranged on the upper end surface of the base bottom plate. The first fixing plates and the second fixing plates realize the locking and fixing of the sand filling box and the base through a locking structure.

[0017] Further, the locking structure includes a first locking member, a second locking member, and a third locking member. The first locking member is detachably connected to the first fixing plate, the third locking member is detachably connected to the second fixing plate, one end of the second locking member is rotatably connected to the first locking member, and the other end is movably connected to the third locking member.

[0018] Further, a first fixing member is further provided between the fuse housing and the device connecting member.

[0019] Further, a second fixing member is further provided between the fuse housing and the airbag.

[0020] Further, a second terminal accommodating hole is further formed on the bottom plate of the sand filling box, a fourth terminal accommodating hole corresponding to the second terminal accommodating hole is further formed on the bottom plate of the base, the second terminal accommodating hole and the fourth terminal accommodating hole are used for accommodating terminals with different specifications from those of the fuse terminals, and a second terminal protective cover corresponding to the second terminal accommodating hole is further provided in the sand filling box.

[0021] Compared with the prior art, the present utility model has the following beneficial effects:

[0022] The present utility model provides a fuse sand filling tooling, including a sand filling box and a base. Multiple fuses can be placed between the two according to requirements. By using the sand injection structure provided on the sand filling box, under the vibration of the vibration device, the sand grains in the sand filling box are injected into the fuse housing. This technical solution can complete the sand filling work of multiple fuses at one time, improve the sand filling accuracy and efficiency of the fuse, ensure the consistency of the fuse performance, shorten the length of the sand filling tool channel, and reduce the probability of channel blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes, and advantages of the present utility model will become more obvious:

[0024] Figure 1 Structural schematic diagram of a fuse sand filling tooling provided by an embodiment of the present utility model Figure 1 ;

[0025] Figure 2 Structural schematic diagram of a fuse sand filling tooling provided by an embodiment of the present utility model Figure 2 ;

[0026] Figure 3 Cross-sectional schematic diagram of a fuse sand filling tooling provided by an embodiment of the present utility model Figure 1 ;

[0027] Figure 4Schematic cross-section of a sand filling tooling for a fuse provided by an embodiment of the present utility model Figure 2 。

[0028] In the figure:

[0029] 1. Sand filling box; 101. Sand filling box bottom plate; 1011. First terminal accommodating hole; 1012. Second terminal accommodating hole; 102. Sand filling box side plate; 103. Sand injection structure; 1031. Sand injection hole; 1032. Transition hole; 1033. Sand injection connecting piece; 104. First fixing plate

[0030] 2. Guiding structure; 201. First guiding column; 202. Second guiding column

[0031] 3. Fuse; 301. Fuse terminal; 302. Fuse housing; 303. Fuse sand injection hole

[0032] 4. Locking structure; 401. First locking piece; 402. Second locking piece; 403. Third locking piece

[0033] 5. Base; 501. Base bottom plate; 5011. Third terminal accommodating hole; 5012. Fourth terminal accommodating hole; 5013. Fuse accommodating groove; 502. Equipment connecting piece; 503. First fixing piece; 504. Base side plate; 505. Second fixing plate

[0034] 6. First terminal protective cover; 601. First protective cover fixing piece

[0035] 7. Second terminal protective cover; 701. Second protective cover fixing piece

[0036] 8. Airbag

[0037] 9. Second fixing piece Specific implementation manners

[0038] The present utility model will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model

[0039] Embodiment:

[0040] Please refer to Figures 1 - 4 , this embodiment provides a sand filling tooling for a fuse, including a sand filling box 1 and a base 5, and the sand filling box 1 is detachably connected to the base 5

[0041] The base 5 includes a base bottom plate 501 for placing the fuse 3. The fuse 3 includes a fuse terminal 301 and a fuse housing 302. A third terminal accommodation hole 5011 matching the fuse terminal 301 is formed on the base bottom plate 501. The lower end face of the fuse housing 302 is in contact with the upper end face of the base bottom plate 501. A device connecting member 502 is provided on one side of the base bottom plate 501 for fixing the fuse sand filling tooling to the device, and an airbag 8 is provided on the other side for clamping the fuse 3 under the action of the airbag 8;

[0042] The sand filling box 1 includes a sand filling box bottom plate 101. Sand filling box side plates 102 are provided around the sand filling box bottom plate 101. A first terminal accommodation hole 1011 matching the fuse terminal 301 is formed on the sand filling box bottom plate 101. A sand injection structure 103 is further provided on the sand filling box bottom plate 101. The lower end of the sand injection structure 103 is matched with a fuse sand injection hole 303 provided on the upper end face of the fuse housing 302 for transmitting the sand grains in the sand filling box 1 into the fuse housing 302.

[0043] In a specific embodiment, the fuse sand filling tooling further includes a guiding structure 2 and a locking structure 4;

[0044] At least three third terminal accommodation holes 5011 are formed on the base bottom plate 501, and the specific number can be customized according to requirements. A fuse accommodation groove 5013 corresponding to the third terminal accommodation hole 5011 is further formed on the upper end face of the base bottom plate 501. The fuse accommodation groove 5013 is matched with the fuse housing 302 for further fixing the fuse 3 on the base 5. Base side plates 504 are further provided on the front and rear sides of the lower end face of the base bottom plate 501 for further protecting the fuse terminal 301. A device connecting member 502 is provided on the rear side of the upper end face of the base bottom plate 501. A first fixing member 503 is provided on the front side of the device connecting member 502. The first fixing member 503 is located between the fuse housing 302 and the device connecting member 502 and can be made of a soft material such as rubber for further reducing the gap between the fuse 3 and the device connecting member 502 to avoid damage to the fuse 3 caused by unstable fixing of the fuse 3 due to an error gap during vibration. At the same time, the soft material can also provide a certain degree of protection to the fuse housing 302. An airbag 8 is provided on the front side of the fuse 3. The airbag 8 can expand under the inflation action of a related device (such as an air pump) and contract under the deflation action. A second fixing member 9 is further provided between the fuse housing 302 and the airbag 8. The second fixing member 9 can also be made of a soft material such as rubber. Under the inflation action of the related device, the airbag 8 expands, causing the second fixing member 9 to fit the fuse housing 302, thereby clamping the fuse 3. Under the deflation action of the related device, the airbag 8 contracts, causing the second fixing member 9 to move away from the surface of the fuse housing 302, thereby releasing the clamping of the fuse 3;

[0045] At least three first terminal accommodation holes 1011 are provided on the bottom plate 101 of the sand filling box. The first terminal accommodation holes 1011 correspond to the third terminal accommodation holes 5011 one by one; four sand injection structures 103 are correspondingly provided for each first terminal accommodation hole 1011. The four sand injection structures 103 are symmetrically distributed. The sand injection structure 103 includes a sand injection hole 1031, a transition hole 1032 and a sand injection connector 1033 that are connected in sequence. The sand injection hole 1031 is opened on the upper end surface of the bottom plate 101 of the sand filling box. The transition hole 1032 is opened on the lower end surface of the bottom plate 101 of the sand filling box. One end of the sand injection connector 1033 is embedded in the transition hole 1032, and the other end is in contact with the fuse sand injection hole 303. The inner diameter of the lower end of the sand injection connector 1033 is smaller than the diameter of the fuse sand injection hole 303. Optionally, the diameter of the sand injection hole 1031 is smaller than the diameter of the transition hole 1032. The sand injection connector 1033 is in a T-shaped structure with a through hole, and the height of the embedded part is smaller than the height of the transition hole 1032. Preferably, the through hole of the sand injection connector 1033 can be a through hole structure with the same diameter up and down, or a through hole structure with a larger upper diameter and a smaller lower diameter; a first terminal protection cover 6 matching the fuse terminal 301 is further provided in the sand filling box 1 to prevent sand particles from flowing into the gap between the fuse terminal 301 and the first terminal accommodation hole 1011; preferably, the cross section of the first terminal protection cover 6 is in an inverted U-shaped structure, and first protection cover fixing parts 601 are further provided on both sides of the first terminal protection cover 6. The first terminal protection cover 6 is detachably connected to the upper end surface of the sand filling box 1 through the first protection cover fixing parts 601;

[0046] The guiding structure 2 is located between the sand filling box 1 and the base 5. The guiding structure 2 includes a first guiding column 201 and a second guiding column 202. The upper end of the first guiding column 201 is detachably connected to the sand filling box 1. The lower end of the second guiding column 202 is detachably connected to the base 5. The first guiding column 201 is slidably connected to the second guiding column 202 to facilitate the relative positioning of the sand filling box 1 and the base 5. Optionally, a through hole is provided on the first guiding column 201, and the outer wall of the second guiding column 202 is slidably connected to the inner wall of the through hole of the first guiding column 201.

[0047] In an alternative embodiment, first fixing plates 104 are symmetrically arranged on the lower end face of the sand filling box bottom plate 101, and second fixing plates 505 corresponding to the first fixing plates 104 are arranged on the upper end face of the base bottom plate 501. The first fixing plates 104 and the second fixing plates 505 are locked and fixed to each other through a locking structure 4 to facilitate further fixing of the sand filling box 1 and the base 5. Specifically, the locking structure 4 includes a first locking member 401, a second locking member 402, and a third locking member 403. The first locking member 401 is detachably connected to the first fixing plate 104, the third locking member 403 is detachably connected to the second fixing plate 505, one end of the second locking member 402 is rotatably connected to the first locking member 401, and the other end is movably connected to the third locking member 403. Optionally, the locking structure can adopt a buckle type structure.

[0048] In an alternative embodiment, this fuse sand filling tooling can also be compatible with the sand filling work of fuses of different specifications at the same time. At this time, a second terminal accommodating hole 1012 is further formed on the sand filling box bottom plate 101, and a fourth terminal accommodating hole 5012 corresponding to the second terminal accommodating hole 1012 is further formed on the base bottom plate 501. The second terminal accommodating hole 1012 and the fourth terminal accommodating hole 5012 are used to accommodate terminals with different specifications from the fuse terminals 301. A second terminal protection cover 7 corresponding to the second terminal accommodating hole 1012 is further arranged in the sand filling box 1 to prevent sand grains from flowing into the gap between the terminals with different specifications from the fuse terminals 301 and the second terminal accommodating hole 1012. Preferably, the cross section of the second terminal protection cover 7 is in an inverted U-shaped structure, and second protection cover fixing members 701 are further arranged on both sides of the second terminal protection cover 7. The second terminal protection cover 7 is detachably connected to the upper end face of the sand filling box 1 through the second protection cover fixing members 701. Optionally, the terminals with different specifications from the fuse terminals 301 can be the terminals of an asymmetric fuse. At this time, the general sand injection structure 301 can be used to fill the asymmetric fuse with sand. The terminals with different specifications from the fuse terminals 301 can also be the terminals of a symmetric fuse. At this time, another sand injection structure corresponding to the symmetric fuse is further arranged on the sand filling box bottom plate 101. During the sand filling process of the fuse 3, the other sand injection structure can be blocked by a matching rubber plug or other structures to prevent sand grains from accidentally flowing into the other sand injection structure.

[0049] In this embodiment, first connect this fuse sand filling tooling to the vibrating device through the device connecting piece 502, then place the fuse 3 on the base 5, and then install the sand filling box 1 on the base 5 through the sliding connection between the first guiding column 201 and the second guiding column 202. Then use the locking structure 4 to lock and fix the sand filling box 1 and the base 2. Start the inflation device to inflate the airbag 8 to further fix the fuse 3. After that, start the vibrating device so that the sand grains filled in the sand filling box 1 are filled into the fuse housing 302 through the sand injection structure 103, realizing the sand filling of the fuse 3. This technical solution can complete the sand filling work of multiple fuses at one time, improve the sand filling accuracy and efficiency of the fuses, ensure the performance consistency of the fuses at the same time, shorten the length of the sand filling tool channel, and reduce the probability of channel blockage.

[0050] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A sand filling tool for fuse, characterized in that: It comprises a sand filling box (1) and a base (5), wherein the sand filling box (1) and the base (5) are detachably connected; The base (5) comprises a base bottom plate (501) for placing a fuse (3), wherein the fuse (3) comprises a fuse terminal (301) and a fuse housing (302), a third terminal accommodating hole (5011) matching the fuse terminal (301) is provided on the base bottom plate (501), the lower end surface of the fuse housing (302) is in contact with the upper end surface of the base bottom plate (501), a device connecting piece (502) is provided on one side of the base bottom plate (501) for fixing the fuse sand filling tooling to the vibration equipment, and an air bag (8) is provided on the other side for making the fuse (3) be in a clamped state under the action of the air bag (8); The sand filling box (1) comprises a sand filling box bottom plate (101), and sand filling box side plates (102) are arranged around the sand filling box bottom plate (101). A first terminal accommodating hole (1011) matching the fuse terminal (301) is opened on the sand filling box bottom plate (101), and a sand injection structure (103) is also arranged on the sand filling box bottom plate (101). The lower end of the sand injection structure (103) matches the fuse sand injection hole (303) arranged on the upper end surface of the fuse housing (302), and is used to transfer sand particles in the sand filling box (1) to the fuse housing (302).

2. A fuse sand filling tool according to claim 1, characterized in that: A guide structure (2) is provided at the lower end of the sand filling box (1), and the guide structure (2) comprises a first guide column (201) and a second guide column (202), the upper end of the first guide column (201) is detachably connected to the sand filling box (1), the lower end of the second guide column (202) is detachably connected to the base (5), and the first guide column (201) and the second guide column (202) are slidably connected.

3. A fuse sand filling tool according to claim 1, characterized in that: The sand injection structure (103) comprises a sand injection hole (1031), a transition hole (1032) and a sand injection connector (1033) which are connected in sequence. The sand injection hole (1031) is provided on the upper end surface of the sand filling box bottom plate (101), and the transition hole (1032) is provided on the lower end surface of the sand filling box bottom plate (101). One end of the sand injection connector (1033) is embedded in the transition hole (1032), and the other end is in contact with the fuse sand injection hole (303).

4. A fuse sand filling tool according to claim 3, characterized in that: The inner diameter of the lower end of the sand injection connection piece (1033) is smaller than the diameter of the sand injection hole (303) of the fuse.

5. A fuse sand filling tool according to claim 1, characterized in that: The sand-filling box (1) is also provided with a first terminal protection cover (6) matching the fuse terminal (301) and used to prevent the sand from flowing into the gap between the fuse terminal (301) and the first terminal accommodating hole (1011).

6. A fuse sand filling tool according to claim 1, characterized in that: A first fixing plate (104) is symmetrically arranged on the lower end surface of the sand filling box bottom plate (101), and a second fixing plate (505) corresponding to the first fixing plate (104) is arranged on the upper end surface of the base bottom plate (501). The first fixing plate (104) and the second fixing plate (505) are locked and fixed to the sand filling box (1) and the base (5) via a locking structure (4).

7. A fuse sand filling tool according to claim 6, characterized in that: The locking structure (4) comprises a first locking member (401), a second locking member (402) and a third locking member (403); the first locking member (401) is detachably connected to the first fixing plate (104); the third locking member (403) is detachably connected to the second fixing plate (505); one end of the second locking member (402) is rotatably connected to the first locking member (401), and the other end is movably connected to the third locking member (403).

8. The sand filling tool for fuse according to claim 1, characterized in that: A first fixing member (503) is also provided between the fuse housing (302) and the device connecting member (502).

9. A fuse sand filling tool according to claim 1, characterized in that: A second fixing member (9) is also provided between the fuse housing (302) and the air bag (8).

10. A fuse sand filling tool according to any one of claims 1 to 9, characterized in that: The sand-filling box bottom plate (101) is also provided with a second terminal accommodating hole (1012), and the base bottom plate (501) is also provided with a fourth terminal accommodating hole (5012) corresponding to the second terminal accommodating hole (1012). The second terminal accommodating hole (1012) and the fourth terminal accommodating hole (5012) are used to accommodate terminals of different specifications from the fuse terminal (301). The sand-filling box (1) is also provided with a second terminal protective cover (7) corresponding to the second terminal accommodating hole (1012).

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