Fusible link

Abstract

The utility model relates to electronic device technical field especially, relates to fuse -cut type fuse, including two groups same structure cover, the cover inside one body forming has diagonal setting two connecting post no.

Description

Technical Field

[0001] This utility model relates to the field of electronic device technology, specifically to a fusible fuse. Background Technology

[0002] With the diversification of electrical equipment and the continuous expansion of application scenarios, the market has placed higher demands on the performance, ease of use, and maintenance efficiency of fusible fuses. However, existing fusible fuses still face some problems in practical applications: On the one hand, some traditional fuses have complex structures, usually composed of multiple scattered components, making assembly cumbersome. This not only increases manufacturing time and labor costs but also easily affects the overall performance and stability of the fuse due to improper assembly. On the other hand, heat dissipation performance is a crucial factor affecting the reliability of fuses. When the current in the circuit is large, the fuse's fusible part generates a lot of heat. If heat dissipation is not timely, the fusible part may age prematurely or melt accidentally, affecting its normal protective function. Furthermore, after a fuse melts, its condition needs to be quickly assessed for replacement, but the structural design of some existing fuses makes it difficult to observe the condition of the fusible part, especially in scenarios with limited installation space or concealed locations, causing inconvenience for maintenance. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a fusible fuse, which solves the technical problems of traditional fuses, such as complex structure, cumbersome assembly, poor heat dissipation of the fusible part which easily leads to premature aging or accidental melting, and difficulty in observing the status after melting.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fusible fuse, comprising two sets of identical covers, each cover having two diagonally arranged connecting posts integrally formed on its inner side, and two diagonally arranged connecting holes on its inner side, wherein the connecting posts of one set of covers are inserted into the connecting holes of the other set of covers, and a heat dissipation cavity located in the middle is also provided on the inner side of the cover, and heat dissipation through holes corresponding to the position of the heat dissipation cavity are provided on the side wall of the cover, and a positioning groove is provided on the inner side of the cover, in which a terminal block is placed, and the terminal block is pressed between the two sets of covers.

[0005] Preferably, the connecting hole is provided with a countersunk hole on the outer side of the cover.

[0006] Preferably, the terminal block includes two symmetrically arranged clamping parts, each clamping part having a positioning through hole for a connecting post to pass through, and a fusible part located at the heat dissipation cavity connecting the two clamping parts. A connecting part is connected to the outside of the clamping parts, and the connecting part has a connecting bayonet.

[0007] Preferably, an adhesive strip is attached to the fused portion.

[0008] Preferably, the inner side of the cover has two diagonally arranged connecting posts 2 integrally formed, and the connecting posts 2 are inserted into the connecting holes.

[0009] Preferably, the second connecting column includes a column body with a movable groove on it. Both sides of the movable groove are provided with a locking block integrally formed with the column body, and the top of the locking block is provided with an inclined surface.

[0010] By employing the above technical solution, this utility model provides a fusible fuse, which has at least the following beneficial effects:

[0011] 1. This fusible fuse consists of two sets of covers and a terminal block. The two sets of covers can press the terminal block between them, which has the advantages of simple and convenient assembly.

[0012] 2. This fusible fuse, by providing a heat dissipation cavity and heat dissipation through holes on the cover, can achieve rapid heat dissipation of the fusible part of the terminal block, and the state of the fusible part can be observed through the heat dissipation through holes to quickly determine whether the fuse has blown.

[0013] 3. This fusible fuse, by setting an adhesive strip on the fusible part, allows the user to determine whether the fuse has blown by observing the odor produced after the adhesive strip melts when the fuse is in an inconvenient installation position. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 This is a three-dimensional structural diagram of the entire embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the two covers after disassembly.

[0017] Figure 3 This is a schematic diagram of the structure of a single cover of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the entire embodiment of the present utility model, embodiment two;

[0019] Figure 5 This is a schematic diagram of the structure of the connecting column 2 of this utility model.

[0020] Figure label:

[0021] 1. Cover; 11. Heat dissipation cavity; 12. Heat dissipation through hole; 13. Positioning groove; 14. Connecting hole; 141. Countersunk hole; 2. Connecting post one; 3. Terminal block; 31. Clamping part; 311. Positioning through hole; 32. Fusible part; 33. Connecting part; 331. Connecting bayonet; 34. Adhesive strip; 4. Connecting post two; 41. Post body; 42. Movable groove; 43. Locking block; 44. Angled surface. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In electrical circuit systems, fuses are key protective components that ensure the safe operation of circuits. Their main function is to disconnect the circuit by melting their own fusing part 32 when an abnormal situation such as overload or short circuit occurs in the circuit, thereby preventing electrical equipment from being damaged by excessive current or even causing safety accidents such as fires.

[0024] Example 1:

[0025] Due to the technical shortcomings of existing technologies, such as complex structure, cumbersome assembly, poor heat dissipation of the fuse part 32 leading to premature aging or accidental melting, and difficulty in observing the condition after melting, please refer to... Figures 1-3The fusible fuse provided in this embodiment has the advantages of simple and convenient assembly, and can achieve rapid heat dissipation of the fusible part 32 of the terminal block 3. The state of the fusible part 32 can be observed through the heat dissipation through-hole 12 to quickly determine whether the fuse has melted. It can also be determined whether the fuse has melted by the smell produced after the adhesive strip 34 is melted. The fuse includes two sets of cover bodies 1 with identical structures. The inner side of the cover body 1 has two diagonally arranged connecting posts 2 integrally formed. The inner side of the cover body 1 has two diagonally arranged connecting holes 14. The connecting posts 2 of one set of cover body 1 are inserted into the connecting holes 14 of the other set of cover body 1. The inner side of the cover body 1 also has a heat dissipation cavity 11 located in the middle. The side wall is provided with heat dissipation through holes 12 corresponding to the position of the heat dissipation cavity 11. The inner side of the cover 1 is provided with a positioning groove 13, and a terminal block 3 is placed in the positioning groove 13. The terminal block 3 is pressed between the two sets of cover 1. The two sets of cover 1 are pressed and fixed by "connecting post 2 inserted into connecting hole 14". The structure is simple and the assembly is convenient, reducing assembly steps and error risks. The heat dissipation cavity 11 and the heat dissipation through holes 12 of the cover 1 can quickly dissipate the heat of the fuse part 32, avoid its premature aging or accidental melting, and improve the working stability. The heat dissipation through holes 12 correspond to the heat dissipation cavity 11, and the state of the fuse part 32 can be directly observed, which is convenient for quickly judging whether the fuse has melted and improves maintenance efficiency.

[0026] Furthermore, a countersunk hole 141 is provided at the position of the connecting hole 14 on the outside of the cover 1; when the two covers 1 are pressed together, one end of the connecting post is melted by heat fusion so that it fits into the countersunk hole 141, thus fixing the connecting post and preventing the two covers 1 from separating, which has the advantage of simple connection.

[0027] The traditional terminal block 3 and cover 1 have insufficient positioning accuracy, which makes them prone to displacement during assembly or use, affecting the stability of the fuse part 32. The connection structure between the terminal block 3 and the external circuit is complex and the installation efficiency is low. To address this problem, the terminal block 3 includes two symmetrically arranged clamping parts 31. The clamping parts 31 have positioning through holes 311 for the connecting post 2 to pass through. The fuse part 32 located in the heat dissipation cavity 11 is connected between the two clamping parts 31. A connecting part 33 is connected to the outside of the clamping parts 31, and the connecting part 33 has a connecting slot 331. The positioning through holes 311 of the clamping parts 31 allow the connecting post 2 to pass through, so as to achieve precise fixation of the terminal block 3 in the positioning groove 13 of the cover 1, avoid displacement, and ensure the stability of the fuse part 32. The fuse part 32 is located in the heat dissipation cavity 11, which can make full use of the heat dissipation structure to improve the heat dissipation effect. The design of the connecting slot 331 of the connecting part 33 simplifies the connection method with the external circuit and improves the ease of installation.

[0028] When a fuse is installed in a concealed, confined, or otherwise inconvenient location for direct observation, it is difficult to quickly determine whether the fuse element 32 has blown. This requires disassembling the component for inspection, increasing maintenance workload and time costs. To address this issue, an adhesive strip 34 is attached to the fuse element 32. When the fuse element 32 blows, the adhesive strip 34 melts due to high temperature and produces a characteristic odor. Even in installation locations where it is difficult to observe, the odor can be used to quickly determine whether the fuse has blown without disassembling the component, greatly improving maintenance convenience.

[0029] Example 2:

[0030] In Embodiment 1, after the two covers 1 are pressed together, the connecting post needs to be heat-fused to fix it. This requires an additional melting step. Therefore, without changing the rest of the structure, the structure of the connecting post 2 is improved. Specifically, please refer to... Figures 4-5 Two diagonally arranged connecting posts 4 are integrally formed on the inner side of the cover 1. The connecting posts 4 are inserted into the connecting hole 14. Specifically, the connecting post 4 includes a post body 41, on which a movable groove 42 is provided. On both sides of the movable groove 42, there are locking blocks 43 integrally formed with the post body 41. The top of the locking blocks 43 is provided with an inclined surface 44. When the two cover bodies 1 are pressed together, the post body 41 will be inserted into the connecting hole 14. Under the action of the inclined surface 44, the locking blocks 43 are retracted into the movable groove 42 by the pressure of the connecting hole 14. When the post body 41 is fully inserted into the connecting hole 14, the locking blocks 43 can automatically lock into the countersunk hole 141 of the connecting hole 14, thereby realizing the connection and fixation of the two cover bodies 1, which can eliminate the heat fusion step and improve production efficiency.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fusible fuse, comprising two sets of identical covers (1), characterized in that: The inner side of the cover (1) is integrally formed with two diagonally arranged connecting posts (2), and the inner side of the cover (1) is provided with two diagonally arranged connecting holes (14). One set of connecting posts (2) of the cover (1) is inserted into the connecting holes (14) of the other set of cover (1). The inner side of the cover (1) is also provided with a heat dissipation cavity (11) located in the middle position. The side wall of the cover (1) is provided with heat dissipation through holes (12) corresponding to the position of the heat dissipation cavity (11). The inner side of the cover (1) is provided with a positioning groove (13). A terminal block (3) is placed in the positioning groove (13). The terminal block (3) is pressed between the two sets of cover (1).

2. The fusible fuse according to claim 1, characterized in that: The connecting hole (14) is provided with a countersunk hole (141) located on the outside of the cover (1).

3. The fusible fuse according to claim 1, characterized in that: The terminal block (3) includes two symmetrically arranged clamping parts (31). The clamping parts (31) are provided with positioning through holes (311) for the connecting post (2) to pass through. The two clamping parts (31) are connected by a fuse part (32) located at the heat dissipation cavity (11). The outer side of the clamping parts (31) is connected to a connecting part (33), and the connecting part (33) is provided with a connecting bayonet (331).

4. The fusible fuse according to claim 3, characterized in that: An adhesive strip (34) is attached to the fuse part (32).

5. The fusible fuse according to claim 1, characterized in that: The inner side of the cover (1) is integrally formed with two diagonally arranged connecting posts (4), which are inserted into the connecting holes (14).

6. The fusible fuse according to claim 5, characterized in that: The connecting column 2 (4) includes a column body (41), a movable groove (42) is provided on the column body (41), and a locking block (43) integrally formed with the column body (41) is provided on both sides of the movable groove (42), and a slope (44) is provided on the top of the locking block (43).

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