Melt for low-voltage fuse

Abstract

The utility model relates to a melt, in particular to a melt for a low-voltage fuse, which comprises a melt body, the melt body is composed of a functional part and mounting parts arranged at two ends of the functional part, the mounting parts and the functional part are integrally formed by stamping, the functional part is gradually widened from the middle to the two ends, and the functional part and the mounting parts are integrally formed by stamping. A functional area is arranged on the functional part, a sinking groove is formed in the functional area in a sinking manner, and a hollow hole is formed in the sinking groove. The utility model has the advantages of simple structure and reasonable design, can realize different current-carrying capacities by changing the shape and thickness of the functional area, does not influence the use and reliability of the melt, and is worthy of vigorous popularization and application.

Description

Technical Field

[0001] The utility model relates to a melt, in particular to a melt for a low-voltage fuse. Background Technique

[0002] A low-voltage fuse is a circuit component that melts the melt by the heat generated by itself to disconnect the circuit when the current exceeds the specified value. Fuses are widely used in high- and low-voltage power distribution systems, control systems, and electrical equipment. As a protector against short circuits and overcurrents, it is one of the most commonly used protective components. The melt is an important part of a low-voltage fuse.

[0003] At present, the existing melts are basically formed by stamping metal strips. When adjusting the rated current, usually melts with different thicknesses are used, and the whole melt is uniform. The disadvantages of such a design are: 1. The width-to-thickness ratio of the melt can only be changed within a certain range; 2. It is difficult to smelt and process thin strips, for example, below 0.06 mm, and it is also difficult to wind and transport. Local deformation may occur due to the self-weight after winding, affecting the resistance of the finished fuse / the cross-sectional area of the variable cross-section; 3. After the thin strip is stamped into a melt with different variable cross-sectional shapes, in addition to being easily deformed during handling, the spot welding process of welding the melt to the fuse body subsequently is also more difficult. Excessive spot welding power is likely to burn through the thin melt, and too small power affects subsequent use and reliability. Therefore, the present invention has improved and modified the structure of the existing melt for a low-voltage fuse. Content of the Utility Model

[0004] The purpose of the utility model is to provide a melt for a low-voltage fuse, which has the advantages of simple structure, reasonable design, and can achieve different current-carrying capacities by changing the shape and thickness of the functional area, without affecting the use and reliability of the melt, and solves the problems raised in the above technical background.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A melt for a low-voltage fuse, the melt includes a melt body, the melt body is composed of a functional part and installation parts arranged at both ends of the functional part, the installation parts and the functional part are integrally formed by stamping, the functional part gradually becomes wider from the middle to both ends, and a functional area is arranged on the functional part. The functional area sinks downward to form a sinking groove, and a hollow hole is opened in the sinking groove.

[0006] Preferably, the melt body is in an overall "J" shape, and the melt body is made of a copper strip, a silver strip, or a copper-silver composite strip material.

[0007] Preferably, the installation part is in a U shape.

[0008] Preferably, the depth value of the sinking groove is between 0.1 mm and 0.5 mm.

[0009] Preferably, the hollow holes are rectangular or square in shape.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides a melt for a low-voltage fuse, which includes a melt body. The melt body is composed of a functional part and a mounting part arranged at both ends of the functional part. The mounting part and the functional part are stamped and formed in one piece. The overall structure is simple and the design is reasonable. A functional area is arranged on the functional part, and a sinking groove is formed by sinking the functional area. The depth of the sinking groove is between 0.1mm and 0.5mm. The thickness of the functional area can be changed by the sinking groove, and then the cross-sectional thickness of the functional area can be adjusted according to the demand, so as to meet the demand of different current carrying. By opening a hollow hole in the sinking groove, the area of ​​the cross-sectional area of ​​the functional area can also be changed, thereby changing the current carrying value of the melt to meet the different usage requirements of users. By changing the shape and thickness of the functional area to change the current carrying of the melt, the problem of difficult smelting and processing of the strip and deformation during transportation can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall structural diagram of the first embodiment of the utility model;

[0013] Figure 2 It is a top view of the first embodiment of the utility model;

[0014] Figure 3 It is a side view of the first embodiment of the utility model;

[0015] Figure 4 It is a top view of the second embodiment of the utility model;

[0016] Figure 5 It is a side view of the second embodiment of the utility model;

[0017] Figure 6 It is a top view of the third embodiment of the utility model;

[0018] Figure 7 It is a side view of the third embodiment of the present utility model.

[0019] The reference numerals and names in the figures are as follows:

[0020] 1. Melt body; 11. Functional part; 12. Mounting part; 13. Functional area; 14. Sinking groove; 15. Hollow hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the embodiments of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] Embodiment 1:

[0025] See also Figures 1 to 3The utility model provides an embodiment: a low-voltage fuse melt, the melt comprising a melt body 1, the melt body 1 is in the shape of a "J" as a whole, and the melt body 1 is made of copper strip material, the melt body 1 is composed of a functional part 11 and a mounting part 12 arranged at both ends of the functional part 11, the mounting part 12 is integrally stamped with the functional part 11, and the mounting part 12 is in a U shape, so that it is easy to install it on the low-voltage fuse, of course, in some other embodiments, the mounting part 12 can also be The functional portion 11 gradually widens from the middle to both ends, and a functional area 13 is provided on the functional portion 11. The functional area 13 sinks up and down to form a sinking groove 14. The depth of the sinking groove 14 is between 0.1mm and 0.5mm. A hollow hole 15 is opened in the sinking groove 14. In this embodiment, the hollow hole 15 is square, and the distance d from the hollow hole 15 to the edge of the functional portion 11 is 0.45mm. The depth of the sinking groove 14 is 0.3mm. The current carrying value of the melt designed in this way is 100A.

[0026] Embodiment 2:

[0027] See also Figure 4 and Figure 5 The structure of this embodiment is basically the same as that of the first embodiment, except that the melt body 1 is made of silver strip material, the hollow hole 15 is square, and the distance d from the hollow hole 15 to the edge of the functional part 11 is 0.45 mm, and the depth of the sinking groove 14 is 0.2 mm. The current carrying value of the melt designed in this way is 70A.

[0028] Embodiment three:

[0029] See also Figure 6 and Figure 7 The structure of this embodiment is basically the same as that of the first embodiment, except that the melt body 1 is made of copper-silver composite strip material, the hollow hole 15 is rectangular, and there are two hollow holes 15, the distance d between the two hollow holes 15 and the edge of the functional part 11 is 0.5 mm, the depth of the sinking groove 14 is 0.21 mm, and the current carrying value of the melt designed in this way is 115A.

[0030] It should be noted that in some other embodiments, the hollow hole 15 may also be circular or elliptical, or may be some other shapes, which will not be described in detail here.

[0031] In summary, the melt structure in the utility model is simple and reasonably designed. By changing the shape and thickness of the functional area 13, different current carrying capacities can be achieved without affecting the use and reliability of the melt. It is worthy of vigorous promotion and application.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A low voltage fuse fuse, characterized in that: It includes a melt body (1), and the melt body (1) is composed of a functional part (11) and mounting parts (12) arranged at both ends of the functional part (11). The mounting parts (12) and the functional part (11) are integrally formed by stamping. The functional part (11) gradually becomes wider from the middle to both ends, and a functional area (13) is arranged on the functional part (11). The functional area (13) sinks downward to form a sinking groove (14), and a hollow hole (15) is provided in the sinking groove (14).

2. A low voltage fuse according to claim 1, characterized in that: The melt body (1) is integrally in a "ji" character shape, and the melt body (1) is made of copper strip or silver strip or copper-silver composite strip material.

3. A low voltage fuse according to claim 1, characterized in that: The mounting part (12) is in a U shape.

4. A low voltage fuse according to claim 1, characterized in that: The depth value of the sinking groove (14) is between 0.1 mm and 0.5 mm.

5. The low voltage fuse according to claim 1, characterized in that: The hollow hole (15) is in a rectangular shape or a square shape.

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