CN223612355U - A fuse housing and a fuse - Google Patents

Abstract

The utility model discloses a fuse shell and a fuse, wherein the fuse shell comprises a first shell, a second shell and a secondary injection molding body, the first shell and the second shell are combined to form a cylindrical structure, the first shell and the second shell are both primary injection molding bodies, and the secondary injection molding body is formed between the first shell and the second shell and forms a sealing structure. The utility model provides a fuse shell, which ensures the consistency of strength through a first shell and a second shell which are formed by one-time injection molding, improves the tightness and strength of the shell through two-time injection molding, ensures that internal devices are completely sealed, and does not generate creepage phenomenon of current passing through a gap in the working process, thereby greatly improving the use safety of products.

Description

Fuse shell and fuse

Technical Field

The utility model relates to the technical field of fuses, in particular to a fuse shell and a fuse.

Background

Cylindrical fuses are common important components in electronic devices, and are generally covered by a ceramic shell so as to realize that the cylindrical fuses inside the fuses are common important components in electronic devices, and are generally covered by the ceramic shell so as to realize that insulating material particles inside the fuses are sealed and provide physical protection such as insulation, high temperature resistance and the like. Most of the existing cylindrical fuses adopt ceramic shells and are sealed through insulating sleeves on two side surfaces. However, the conventional design has a plurality of disadvantages, firstly, the processing technology of the ceramic shell is complex and the cost is high, and secondly, the ceramic has poor flexibility and is easily influenced by external force and environmental factors, so that the shell is broken or even broken and falls off, and the reliability and the service life of the fuse are influenced.

In order to solve these problems and reduce manufacturing costs, plastic housings are attracting attention as alternative materials for fuse housings. The plastic shell not only has good corrosion resistance and light weight characteristics, but also can realize more accurate and diversified shell designs through a modern plastic molding process. With the continued development of new high performance plastic materials, plastic housing fuses have better cost effectiveness and environmental advantages and are therefore considered to be a major trend in future industry development.

Disclosure of Invention

The present utility model aims to solve one of the technical problems in the related art to a certain extent. Therefore, the utility model provides the fuse shell, the first shell and the second shell which are formed by one-time injection molding ensure the consistency of strength, the tightness and the strength of the shell are improved by two-time injection molding, the internal devices are ensured to be completely sealed, and the phenomenon that current is creepage through a gap can not occur in the working process, so that the use safety of products is greatly improved.

The utility model further provides a fuse comprising the fuse housing.

The technical scheme includes that the fuse shell comprises a first shell, a second shell and a secondary injection molding body, wherein the first shell and the second shell are combined to form a cylindrical structure, the first shell and the second shell are both primary injection molding bodies, and the secondary injection molding body is formed between the first shell and the second shell and forms a sealing structure.

After the structure is adopted, the fuse shell can achieve more accurate and reliable sealing effect. Firstly, through the first casing and the second casing of once injection moulding, can ensure the bulk strength and the uniformity of shell to can ensure that the size and the shape of each part all accord with the operation requirement of fuse through accurate control mould design. The introduction of the secondary injection molding body can further improve the tightness and strength of the shell, ensure that the internal devices are completely sealed, and avoid the creepage phenomenon of current passing through a gap in the working process, thereby greatly improving the use safety of the product.

According to one embodiment of the utility model, the first shell and the second shell are both provided with the flange and the annular groove, the secondary injection molding body is coated in the annular groove, and the secondary injection molding body is coated in the annular groove to form a tight radial binding force, so that the sealing performance and the structural stability of the shells are enhanced, and the durability of the fuse shell is improved.

According to one embodiment of the utility model, the flange is provided with the through holes, when the first shell and the second shell are combined and spliced, the through holes on the first shell and the second shell are aligned one by one to form a channel structure, and the secondary injection molding body wraps the channel structure, so that the binding force of the first shell and the second shell is enhanced, and the sealing property and the structural stability are improved.

According to the embodiment of the utility model, the connecting edges of the first shell and the second shell are alternately provided with the plug and the slot, the plug is in plug-in fit with the slot, accurate butt joint of the two parts is ensured, the connection stability and the tightness are enhanced, the external environment is prevented from influencing the internal structure of the fuse shell, and the overall safety and the durability are improved.

According to one embodiment of the utility model, the plug is provided with the combining hole, the two-shot molding body covers the combining hole, and the combining force and the sealing performance between the first shell/the second shell and the two-shot molding body are further enhanced.

According to one embodiment of the utility model, the connecting edges of the first shell and the second shell are provided with grooves, the grooves on the first shell and the second shell are combined to form a cavity, the cavity is filled with the secondary injection molding body, the interior of the connecting part of the first shell and the second shell is hidden, the exposure is avoided, the appearance attractiveness is improved, and the sealing property and the structural stability are enhanced.

According to one embodiment of the utility model, the fuse housing further comprises a fuse body, the fuse body is arranged between the first housing and the second housing in a positioning manner in a second injection molding process, the fuse body is covered by the second injection molding body, and two ends of the fuse body extend out of two ends of the cylindrical structure to serve as a wiring terminal.

According to one embodiment of the utility model, the fuse link is provided with the limiting part or the connecting hole, the connecting hole is covered by the secondary injection molding body, the limiting part is used for positioning and mounting, and the connecting hole enhances the binding force between the fuse link and the secondary injection molding body.

According to one embodiment of the utility model, one of the first shell and the second shell is provided with a first spigot, the other is provided with a second spigot matched with the first spigot, and the two are matched through the spigot to ensure that the shells are firmly abutted in the assembly process, prevent displacement or loosening, thereby improving the tightness and the structural stability of the shells, and/or

One of the first shell and the second shell is provided with a positioning column, the other is provided with a positioning hole, and when the two shells are connected, the positioning column is inserted into the positioning hole, so that the shells are ensured to be accurately aligned in the assembly process, and the stability and the accuracy of the connection are improved, and/or

The outer surfaces of the first shell and the second shell are respectively provided with a semicircular groove, the semicircular grooves on the first shell and the second shell are combined to form an annular structure surrounding the circumference of the cylindrical structure, and the secondary injection molding body covers the annular structure, so that the compression resistance and the durability of the fuse shell are improved, and/or

The first and/or second housing has reinforcing ribs for improving the compression strength and rigidity of the housing, enhancing the stability of the overall structure, preventing deformation or breakage due to external force during use, ensuring the reliability and long service life of the fuse housing under different working environments, and/or

The first and/or second housing is provided with a material injection hole for injecting necessary materials into the fuse housing to ensure normal functions and performances of the fuse, and/or

The first shell and/or the second shell are/is provided with a notch, and the fuse link is used for being embedded into the notch in the second injection molding process.

Compared with the traditional ceramic shell, the fuse adopting the plastic shell not only greatly reduces the production cost, but also can meet the increasing light-weight and compact design demands by reducing the weight of the shell. In addition, the plastic material has better plasticity, and can realize more complex and diversified appearance designs so as to adapt to specific requirements in different application scenes.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a perspective view of a fuse housing in embodiment 1 of the present utility model.

Fig. 2 is an exploded view of a fuse housing in embodiment 1 of the present utility model.

Fig. 3 is a perspective view of the first housing in embodiment 1 of the present utility model.

Fig. 4 is a perspective view of the second housing in embodiment 1 of the present utility model.

Fig. 5 is a schematic structural diagram of the second housing and the fuse link in embodiment 1 of the present utility model.

Fig. 6 is a perspective view of a fuse housing in embodiment 2 of the present utility model.

Fig. 7 is an exploded view of a fuse housing in embodiment 2 of the present utility model.

Fig. 8 is a perspective view of the first housing in embodiment 2 of the present utility model.

Fig. 9 is a perspective view of the second housing in embodiment 2 of the present utility model.

Fig. 10 is a schematic structural diagram of a second housing and a fuse link in embodiment 2 of the present utility model.

Fig. 11 is a perspective view of a fuse housing in embodiment 3 of the present utility model.

Fig. 12 is an exploded view of a fuse housing in embodiment 3 of the present utility model.

Fig. 13 is a perspective view of the first housing in embodiment 3 of the present utility model.

Fig. 14 is a perspective view of the second housing in embodiment 3 of the present utility model.

FIG. 15 is a perspective view of a secondary injection molded article in example 3 of the present utility model.

Fig. 16 is a perspective view of a fuse housing in embodiment 4 of the present utility model.

Fig. 17 is an exploded view of a fuse housing in embodiment 4 of the present utility model.

Fig. 18 is a perspective view of the first housing in embodiment 4 of the present utility model.

Fig. 19 is a perspective view of the second housing in embodiment 4 of the present utility model.

The reference numerals in the figures illustrate:

1. A first housing; 2, a second shell, 3, a fuse body, 4, a secondary injection molding body;

11. A first spigot; 12, a first flange, 13, a first through hole, 14, a first annular groove, 15, a first notch, 16, a first injection hole, 17, a first groove, 18, a positioning hole, 19, a first plug, 110, a first semicircular groove, 111, a first reinforcing rib;

17a, a first slot;

19a, a first coupling hole;

21. a second spigot; 22, a second flange, 23, a second through hole, 24, a second annular groove, 25, a second notch, 26, a second injection hole, 27, a second groove, 28, a positioning column, 29, a second plug, 210, a second semicircular groove and 211, a second reinforcing rib;

27a, a second slot;

29a, second coupling holes;

31. the limiting part comprises 32 parts, connecting holes, 33 parts and clamping grooves.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Example 1

As shown in fig. 1 to 5, in the present embodiment, a fuse housing is disclosed, which includes a first housing 1, a second housing 2, and a secondary injection molding body 4, where the first housing 1 and the second housing 2 are combined to form a cylindrical structure, and are both primary injection molding bodies, and the secondary injection molding body 4 is formed between the first housing 1 and the second housing 2 and forms a sealing structure.

Specifically, the fuse housing further comprises a fuse link 3, the fuse link 3 is positioned and installed between the first housing 1 and the second housing 2 in the second injection molding process, the fuse link 3 is coated by the second injection molding 4, and two ends of the fuse link 3 extend out of two ends of the cylindrical structure to be used as a wiring terminal.

Further, in the present embodiment, the first housing 1 and the second housing 2 are molded by the first injection in advance, the first housing 1 is provided with the first spigot 11, and the second spigot 21 is matched with the second spigot 21 of the first spigot 11. Wherein, the first spigot 11 is a male spigot, the second spigot 21 is a female spigot, and the male spigot is matched with the female spigot in a concave-convex manner. The first housing 1 is provided with a first flange 12 adjacent to the first spigot 11 and the second housing 2 is provided with a second flange 22 adjacent to the second spigot 21. The first flange 12 has a first annular groove 14 in the direction away from the second housing 2 and the second flange 22 has a second annular groove 24 in the direction away from the first housing 1.

Further, in the present embodiment, the first flange 12 is provided with a plurality of first through holes 13, the first through holes 13 communicate the first annular groove 14 with the connecting edge of the first housing 1, and the second flange 22 is provided with a plurality of second through holes 23, and the second through holes 23 communicate the second annular groove 24 with the connecting edge of the second housing 2. The two axial ends of the first shell 1 are provided with first gaps 15, the two axial ends of the second shell 2 are provided with second gaps 25, when the first shell 1 and the second shell 2 are combined and spliced, the first through holes 13 and the second through holes 23 are aligned one by one to form a channel structure, and the secondary injection molding body 4 wraps the channel structure.

Further, as shown in fig. 5, in the present embodiment, the fuse link 3 is connected to the first housing 1 in advance before the first housing 1 and the second housing 2 are assembled and spliced. The fuse body 3 has two limiting parts 31, and the limiting parts 31 are formed by extending the edges of the fuse body 3 to two sides. The position adjacent to the limiting part 31 is provided with a clamping groove 33, and when the clamping groove 33 is respectively clamped into the first notch 15 and the second notch 25, the limiting part 31 is tightly abutted with the inside of the first shell 1 to form positioning. The first shell 1 and the second shell 2 are combined and spliced, and the second notch 25 on the second shell 2 is clamped into the clamping groove 33.

Further, in this embodiment, the overmold 4 encapsulates the first annular groove 14, the second annular groove 24, the first through hole 13, the second through hole 23, the first notch 15, the second notch 25, and a portion of the fuse body 3.

As shown in connection with fig. 4, the second housing 2 is provided with a second filling opening 26 in the present embodiment.

In other embodiments, a fuse is disclosed that includes the fuse housing described in this embodiment.

Example two

As shown in fig. 6 to 10, in the present embodiment, a fuse housing is disclosed, which includes a first housing 1, a second housing 2, and a secondary injection molding body 4, where the first housing 1 and the second housing 2 are combined to form a cylindrical structure, and are both primary injection molding bodies, and the secondary injection molding body 4 is formed between the first housing 1 and the second housing 2 and forms a sealing structure.

Specifically, the fuse housing further comprises a fuse link 3, the fuse link 3 is positioned and installed between the first housing 1 and the second housing 2 in the second injection molding process, the fuse link 3 is coated by the second injection molding 4, and two ends of the fuse link 3 extend out of two ends of the cylindrical structure to be used as a wiring terminal.

As shown in fig. 7, in this embodiment, the connecting edge of the first housing 1 is provided with a circle of first grooves 17 and four positioning holes 18, and the connecting edge of the second housing 2 is provided with a circle of second grooves 27 and four positioning posts 28. When the first casing 1 and the second casing 2 are combined, the positioning hole 18 is in plug-in fit with the positioning column 28, and the first groove 17 and the second groove 27 are combined to form an annular cavity.

Further, as shown in fig. 6, in this embodiment, a glue inlet is provided on a side wall of the first groove 17, and in the second injection molding process, the molten material is injected into the annular cavity through the glue inlet to form the secondary injection molding body 4. In order to increase the shear force resistance of the overmolding 4 to the first and second housings 1, 2, recesses of the first and second recesses 17, 27 are provided with a relief structure. In other embodiments, as shown in connection with fig. 8, the bottom of the first groove 17 is a smooth surface.

Further, the first casing 1 is provided with a first notch 15 at two axial ends, the second casing 2 is provided with a second notch 25 at two axial ends, and the clamping grooves 33 at two ends of the fuse link 3 are respectively clamped into the first notch 15 and the second notch 25. In this embodiment, the secondary injection molding body 4 fills the annular cavity and encloses the first notch 15, the second notch 25, and a portion of the fuse link 3.

As shown in fig. 8, the first housing 1 is provided with a first injection hole 16 in this embodiment.

In other embodiments, a fuse is disclosed that includes the fuse housing described in this embodiment.

Example III

As shown in fig. 11-15, in this embodiment, a fuse housing is disclosed, which includes a first housing 1, a second housing 2, and a secondary injection molding body 4, where the first housing 1 and the second housing 2 are combined to form a cylindrical structure, and are both primary injection molding bodies, and the secondary injection molding body 4 is formed between the first housing 1 and the second housing 2 and forms a sealing structure.

Specifically, the fuse housing further comprises a fuse link 3, the fuse link 3 is positioned and installed between the first housing 1 and the second housing 2 in the second injection molding process, the fuse link 3 is coated by the second injection molding 4, and two ends of the fuse link 3 extend out of two ends of the cylindrical structure to be used as a wiring terminal.

As shown in fig. 13, in this embodiment, the connecting edge of the first housing 1 is provided with a circle of first grooves 17 and four positioning holes 18, and the connecting edge of the second housing 2 is provided with a circle of second grooves 27 and four positioning posts 28. When the first casing 1 and the second casing 2 are combined, the positioning hole 18 is in plug-in fit with the positioning column 28, and the first groove 17 and the second groove 27 are combined to form an annular cavity.

Further, as shown in fig. 13 to 14, in this embodiment, the connection edge of the first housing 1 is provided with a first plug 19 and a first slot 17a, the connection edge of the second housing 2 is provided with a second plug 29 and a second slot 27a, the first plug 19 and the second plug 29 are arranged in a staggered manner, the first plug 19 is in plug-in fit with the second slot 27a, and the second plug 29 is in plug-in fit with the first slot 17 a. Each first plug 19 is provided with a plurality of first coupling holes 19a, and each second plug 29 is provided with a plurality of second coupling holes 29a. When the first plug 19 is in plug-in fit with the second slot 27a, a gap is left between the first plug and the second slot for the molten material to flow into and fill the first combining hole 19a. Similarly, when the second plug 29 is inserted into the first slot 17a, a gap is left between the two for the molten material to flow into and fill the second combining hole 29a.

Further, as shown in fig. 6, in this embodiment, a glue inlet is provided on a side wall of the first groove 17, and in the second injection molding process, the molten material is injected into the annular cavity through the glue inlet to form the secondary injection molding body 4. In order to increase the shear force resistance of the overmolding 4 to the first and second housings 1, 2, recesses of the first and second recesses 17, 27 are provided with a relief structure.

Further, in this embodiment, the first notch 15 is disposed at two axial ends of the first housing 1, the second notch 25 is disposed at two axial ends of the second housing 2, and the clamping grooves 33 at two ends of the fuse link 3 are respectively clamped into the first notch 15 and the second notch 25. The position of the fuse-link 3 corresponding to the first notch 15 and the second notch 25 is provided with a connecting hole 32, and the connecting hole 32 penetrates through two sides of the fuse-link 3. In this embodiment, the secondary injection molding body 4 fills the annular cavity and wraps the first coupling hole 19a, the second coupling hole 29a, the connecting hole 32, the first notch 15, the second notch 25, and a portion of the fuse body 3.

Further, in the present embodiment, the inner side wall of the first housing 1 is provided with the first reinforcing rib 111, the inner side wall of the second housing 2 is provided with the second reinforcing rib 211, and when the first housing 1 and the second housing 2 are combined to form a cylindrical structure, the first reinforcing rib 111 is aligned with the second reinforcing rib 211.

As shown in fig. 13, the first housing 1 is provided with a first injection hole 16 in this embodiment.

In other embodiments, a fuse is disclosed that includes the fuse housing described in this embodiment.

Example IV

As shown in fig. 16-19, in this embodiment, a fuse housing is disclosed, which includes a first housing 1, a second housing 2, and a secondary injection molding body 4, where the first housing 1 and the second housing 2 are combined to form a cylindrical structure, and are both primary injection molding bodies, and the secondary injection molding body 4 is formed between the first housing 1 and the second housing 2 and forms a sealing structure.

Specifically, the fuse housing further comprises a fuse link 3, the fuse link 3 is positioned and installed between the first housing 1 and the second housing 2 in the second injection molding process, the fuse link 3 is coated by the second injection molding 4, and two ends of the fuse link 3 extend out of two ends of the cylindrical structure to be used as a wiring terminal.

As shown in fig. 18, in this embodiment, the connecting edge of the first housing 1 is provided with a circle of first grooves 17 and four positioning holes 18, and the connecting edge of the second housing 2 is provided with a circle of second grooves 27 and four positioning posts 28. When the first casing 1 and the second casing 2 are combined, the positioning hole 18 is in plug-in fit with the positioning column 28, and the first groove 17 and the second groove 27 are combined to form an annular cavity.

Further, as shown in fig. 18 to 19, in this embodiment, the connection edge of the first housing 1 is provided with a first plug 19 and a first slot 17a, the connection edge of the second housing 2 is provided with a second plug 29 and a second slot 27a, the first plug 19 and the second plug 29 are arranged in a staggered manner, the first plug 19 is in plug-in fit with the second slot 27a, and the second plug 29 is in plug-in fit with the first slot 17 a. Each first plug 19 is provided with a plurality of first coupling holes 19a, and each second plug 29 is provided with a plurality of second coupling holes 29a. When the first plug 19 is in plug-in fit with the second slot 27a, a gap is left between the first plug and the second slot for the molten material to flow into and fill the first combining hole 19a. Similarly, when the second plug 29 is inserted into the first slot 17a, a gap is left between the two for the molten material to flow into and fill the second combining hole 29a.

Further, as shown in fig. 16, in this embodiment, a glue inlet is provided on a side wall of the first groove 17, and in the second injection molding process, the molten material is injected into the annular cavity through the glue inlet to form the secondary injection molding body 4. In order to increase the shear force resistance of the overmolding 4 to the first and second housings 1, 2, recesses of the first and second recesses 17, 27 are provided with a relief structure.

Further, in the present embodiment, the outer surface of the first housing 1 is provided with two parallel first semicircular grooves 110, and the outer surface of the second housing 2 is provided with two parallel second semicircular grooves 210. The first semicircular groove 110 and the second semicircular groove 210 are combined to form an annular structure around the cylindrical structure.

Further, in this embodiment, the first notch 15 is disposed at two axial ends of the first housing 1, the second notch 25 is disposed at two axial ends of the second housing 2, and the clamping grooves 33 at two ends of the fuse link 3 are respectively clamped into the first notch 15 and the second notch 25. The position of the fuse-link 3 corresponding to the first notch 15 and the second notch 25 is provided with a connecting hole 32, and the connecting hole 32 penetrates through two sides of the fuse-link 3. In this embodiment, the secondary injection molding body 4 fills the annular cavity and wraps the first coupling hole 19a, the second coupling hole 29a, the connecting hole 32, the first notch 15, the second notch 25, the first semicircular groove 110, the second semicircular groove 210, and a part of the fuse link 3.

Further, in the present embodiment, the inner side wall of the first housing 1 is provided with the first reinforcing rib 111, the inner side wall of the second housing 2 is provided with the second reinforcing rib 211, and when the first housing 1 and the second housing 2 are combined to form a cylindrical structure, the first reinforcing rib 111 is aligned with the second reinforcing rib 211. As shown in fig. 18, the first housing 1 is provided with a first injection hole 16 in this embodiment.

In other embodiments, a fuse is disclosed that includes the fuse housing described in this embodiment.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above" and "over" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under," "under" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A fuse shell is characterized by comprising a first shell, a second shell and a secondary injection molding body, wherein the first shell and the second shell are combined to form a cylindrical structure, the first shell and the second shell are both primary injection molding bodies, and the secondary injection molding body is formed between the first shell and the second shell and forms a sealing structure.

2. A fuse housing as defined in claim 1, wherein said first and second housings are each provided with a flange and an annular groove, said overmold surrounding said annular groove.

3. A fuse housing as recited in claim 2, wherein said flange has a plurality of through holes, and when said first and second housings are assembled together, said through holes are aligned one by one to form a channel structure, and said overmold encloses said channel structure.

4. A fuse housing as recited in claim 1, wherein the connecting edges of the first and second housings are staggered with plugs and slots, the plugs being in mating engagement with the slots.

5. A fuse housing as recited in claim 4, wherein said plug is provided with a mating hole, said overmold surrounding said mating hole.

6. A fuse housing as defined in claim 1, wherein the connecting edges of the first and second housings are provided with grooves, the grooves on the two housings are combined to form a cavity, and the two-shot molding body fills the cavity.

7. A fuse housing in accordance with any one of claims 1-6 further comprising a fuse link positioned between said first and second housings during a second injection molding process, said second injection molding surrounding said fuse link with ends of said fuse link extending beyond ends of said tubular structure.

8. A fuse housing as defined in claim 7, wherein said fuse link is provided with a limiting portion or a connecting hole, said connecting hole being enclosed by said overmold.

9. A fuse housing in accordance with claim 7, wherein:

One of the first shell and the second shell is provided with a first spigot, the other is provided with a second spigot matched with the first spigot, and/or

One of the first shell and the second shell is provided with a positioning column, the other is provided with a positioning hole, and/or

The outer surfaces of the first shell and the second shell are respectively provided with a semicircular groove, the semicircular grooves on the first shell and the second shell are combined to form an annular structure surrounding the cylindrical structure, the secondary injection molding body coats the annular structure, and/or

The first shell and/or the second shell are/is provided with reinforcing ribs, and/or

The first shell and/or the second shell are/is provided with a material injection hole, and/or

The first shell and/or the second shell are/is provided with a notch, and the fuse link is used for being embedded into the notch in the second injection molding process.

10. A fuse comprising a fuse housing as claimed in any one of claims 1 to 9.