Fuse housing and fuse

Abstract

The utility model discloses a fuse housing and a fuse, the fuse housing comprises a first housing, a second housing and a secondary injection molding body, the first housing and the second housing are combined to form a cylindrical structure, and the first housing and the second housing 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. According to the fuse shell provided by the utility model, the strength consistency is ensured through the first shell and the second shell which are formed through one-time injection molding, the sealing performance and the strength of the shell are improved through secondary injection molding, internal devices are ensured to be completely sealed, the creepage phenomenon caused by the fact that current passes through a gap in the working process is avoided, and the service life of the fuse shell is prolonged. Therefore, the use safety of the product is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fuse, more specifically, relate to a fuse housing and fuse. BACKGROUND

[0002] The cylindrical fuse is an important component in electronic equipment, usually covered by a ceramic shell to seal the internal insulation material particles and provide insulation and high-temperature resistance. The existing cylindrical fuse mostly adopts a ceramic shell and is sealed by an insulating sleeve on both sides. However, this traditional design has several drawbacks. First, the ceramic shell is complex to process and costly. Second, the ceramic shell is not flexible and is easily affected by external forces and environmental factors, leading to shell rupture and even fragmentation, which affects the reliability and life of the fuse.

[0003] To solve these problems and reduce manufacturing costs, plastic shells are gradually gaining attention as an alternative to fuse housings. Plastic shells not only have good corrosion resistance and lightweight characteristics, but also allow for more precise and diverse shell designs through modern plastic molding processes. With the continuous development of new high-performance plastic materials, plastic shell fuses have better cost-effectiveness and environmental advantages, making them a major trend in the future industry. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model provides a fuse housing that ensures consistent strength through one-shot injection molding of the first and second housings and improves the sealing and strength of the housing through secondary injection molding to ensure that internal components are completely sealed and do not experience current creep through gaps during operation, thereby greatly improving the safety of the product in use.

[0005] The utility model also provides a fuse including the above-mentioned fuse housing.

[0006] The utility model adopts the technical scheme of providing a fuse housing including a first housing, a second housing, and a secondary injection body. The first housing and the second housing form a cylindrical structure and are both one-shot injection bodies. The secondary injection body is formed between the first housing and the second housing and forms a sealed structure.

[0007] With the above structure, the fuse shell can realize more accurate and reliable sealing effect. First, the first shell and the second shell formed by one-time injection molding can ensure the overall strength and consistency of the shell, and by precisely controlling the mold design, the size and shape of each part can meet the use requirements of the fuse. The introduction of the secondary injection body can further improve the sealing and strength of the shell, ensure that the internal devices are completely sealed, and the current does not pass through the gap to cause the creeping phenomenon during the working process, thereby greatly improving the safety of the product use.

[0008] According to an embodiment of the present application, the first shell and the second shell are both provided with a flange and an annular groove, and the secondary injection body covers the annular groove. The secondary injection body is covered in the annular groove to form a tight radial bonding force, thereby enhancing the sealing and structural stability of the shell and improving the durability of the fuse shell.

[0009] According to an embodiment of the present application, the flange is provided with a plurality of through holes, and when the first shell and the second shell are combined and spliced, the through holes on the two are aligned to form a channel structure, and the secondary injection body covers the channel structure. The bonding force of the first shell and the second shell is enhanced, and the sealing and structural stability are improved.

[0010] According to an embodiment of the present application, the connecting edges of the first shell and the second shell are staggered with a plug and a socket, and the plug and the socket are inserted and matched. The two parts are accurately butt-jointed, the connection stability and the sealing are enhanced, the external environment is prevented from affecting the internal structure of the fuse shell, and the overall safety and durability are improved.

[0011] According to an embodiment of the present application, the plug is provided with a bonding hole, and the secondary injection body covers the bonding hole. The bonding force and the sealing between the first shell / second shell and the secondary injection body are further enhanced.

[0012] According to an embodiment of the present application, the connecting edges of the first shell and the second shell are both provided with a groove, and the grooves on the two are combined to form a cavity. The secondary injection body fills the cavity and is hidden inside the connecting part of the first shell and the second shell, avoiding exposure and improving the appearance and the sealing and structural stability.

[0013] According to an embodiment of the present application, the fuse shell further comprises a fuse body, the fuse body is positioned and installed between the first shell and the second shell during the secondary injection process, the secondary injection body covers the fuse body, and the two ends of the fuse body extend out of the two ends of the cylindrical structure for use as a terminal.

[0014] According to one embodiment of the utility model, the fuse body is provided with a limiting part or a connecting hole, and the secondary injection body covers the connecting hole; the limiting part is used for positioning installation, and the connecting hole enhances the bonding force between the fuse body and the secondary injection body.

[0015] According to one embodiment of the utility model, one of the first shell and the second shell is provided with a first stop, and the other is provided with a second stop matched with the first stop; the two are matched through the stop to ensure that the shell is firmly connected during assembly, displacement or loosening is prevented, and the sealing property and structural stability of the shell are improved; and / or

[0016] One of the first shell and the second shell is provided with a positioning column, and the other is provided with a positioning hole; when the two are connected, the positioning column is inserted into the positioning hole, accurate alignment of the shell during assembly is ensured, and the stability and accuracy of the connection are improved; and / or

[0017] The outer surfaces of the first shell and the second shell are both provided with semicircular grooves; the semicircular grooves on the two combine to form an annular structure surrounding the cylindrical structure; the secondary injection body covers the annular structure, so that the pressure resistance and durability of the fuse shell are improved; and / or

[0018] The first shell and / or the second shell are provided with reinforcing ribs, aiming to improve the compression strength and rigidity of the shell, enhance the stability of the overall structure, prevent deformation or damage due to external force during use, and ensure the reliability and long service life of the fuse shell under different working environments; and / or

[0019] The first shell and / or the second shell are provided with injection holes, which are used for injecting necessary materials into the fuse shell to ensure the normal function and performance of the fuse; and / or

[0020] The first shell and / or the second shell are provided with notches, and the fuse body is embedded in the notches during the second injection process.

[0021] A fuse includes the fuse shell of any of the above; compared with the traditional ceramic shell, the fuse with a plastic shell not only greatly reduces the production cost, but also meets the increasing demand for lightweight and compact design by reducing the weight of the shell. In addition, the plastic material has better plasticity and can realize more complex and diversified shape design to adapt to specific needs in different application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0023] Figure 1 It is a perspective view of the fuse shell in the embodiment 1 of the present application.

[0024] Figure 2 It is an explosion view of the fuse shell in the embodiment 1 of the present application.

[0025] Figure 3 It is a perspective view of the first shell in the embodiment 1 of the present application.

[0026] Figure 4 It is a perspective view of the second shell in the embodiment 1 of the present application.

[0027] Figure 5 It is a structure schematic view of the second shell and the fuse body in the embodiment 1 of the present application.

[0028] Figure 6 It is a perspective view of the fuse shell in the embodiment 2 of the present application.

[0029] Figure 7 It is an explosion view of the fuse shell in the embodiment 2 of the present application.

[0030] Figure 8 It is a perspective view of the first shell in the embodiment 2 of the present application.

[0031] Figure 9 It is a perspective view of the second shell in the embodiment 2 of the present application.

[0032] Figure 10 It is a structure schematic view of the second shell and the fuse body in the embodiment 2 of the present application.

[0033] Figure 11 It is a perspective view of the fuse shell in the embodiment 3 of the present application.

[0034] Figure 12 It is an explosion view of the fuse shell in the embodiment 3 of the present application.

[0035] Figure 13 It is a perspective view of the first shell in the embodiment 3 of the present application.

[0036] Figure 14 It is a perspective view of the second shell in the embodiment 3 of the present application.

[0037] Figure 15 is a perspective view of the secondary injection body in the embodiment 3 of the utility model.

[0038] Figure 16 is a perspective view of the fuse shell in the embodiment 4 of the utility model.

[0039] Figure 17 is an explosion view of the fuse shell in the embodiment 4 of the utility model.

[0040] Figure 18 is a perspective view of the first shell in the embodiment 4 of the utility model.

[0041] Figure 19 is a perspective view of the second shell in the embodiment 4 of the utility model.

[0042] Mark explanation in drawing:

[0043] 1, first shell; 2, second shell; 3, fuse body; 4, secondary injection body;

[0044] 11, first stop opening; 12, first flange; 13, first through hole; 14, first annular groove; 15, first gap; 16, first injection hole; 17, first recess; 18, positioning hole; 19, first plug; 110, first semicircular groove; 111, first reinforcing rib;

[0045] 17a, first insertion slot;

[0046] 19a, first combination hole;

[0047] 21, second stop opening; 22, second flange; 23, second through hole; 24, second annular groove; 25, second gap; 26, second injection hole; 27, second recess; 28, positioning column; 29, second plug; 210, second semicircular groove; 211, second reinforcing rib;

[0048] 27a, second insertion slot;

[0049] 29a, second combination hole;

[0050] 31, limiting portion; 32, connecting hole; 33, clamping groove. DETAILED DESCRIPTION

[0051] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model. Embodiment one

[0052] As Figures 1-5As shown, in the embodiment, a fuse shell is disclosed, comprising a first shell 1, a second shell 2 and a secondary injection body 4, the first shell 1 and the second shell 2 combine to form a cylindrical structure, and both are primary injection bodies, the secondary injection body 4 is formed between the first shell 1 and the second shell 2 and forms a sealed structure.

[0053] Specifically, the fuse shell further comprises a fuse body 3, which is positioned and installed between the first shell 1 and the second shell 2 in the secondary injection process, the secondary injection body 4 covers the fuse body 3, and both ends of the fuse body 3 protrude from both ends of the cylindrical structure for use as a terminal.

[0054] Further, in the embodiment, the first shell 1 and the second shell 2 are pre-formed by first injection molding, the first shell 1 is provided with a first stop 11, and the second stop 21 is matched with the first stop 11. Among them, the first stop 11 is a male stop, and the second stop 21 is a female stop, and the male stop and the female stop are matched concave-convex. The first shell 1 is provided with a first flange 12 adjacent to the first stop 11, and the second shell 2 is provided with a second flange 22 adjacent to the second stop 21. The first flange 12 has a first annular groove 14 away from the second shell 2, and the second flange 22 has a second annular groove 24 away from the first shell 1.

[0055] Further, in the 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 shell 1, and the second flange 22 is provided with a plurality of second through holes 23, the second through holes 23 communicate the second annular groove 24 with the connecting edge of the second shell 2. The first shell 1 is provided with a first notch 15 at both ends in the axial direction, and the second shell 2 is provided with a second notch 25 at both ends in the axial direction. When the first shell 1 and the second shell 2 are combined and spliced, the first through hole 13 and the second through hole 23 are aligned to form a channel structure, and the secondary injection body 4 covers the channel structure.

[0056] Further, in combination Figure 5 As shown, in the embodiment, the fuse body 3 is connected with the first shell 1 before the first shell 1 and the second shell 2 are combined and spliced. Among them, the fuse body 3 has two limiting portions 31, which are formed by extending from the edge of the fuse body 3 to both sides. A clamping groove 33 is provided adjacent to the limiting portion 31, and when the clamping groove 33 is clamped into the first notch 15 and the second notch 25, the limiting portion 31 is tightly positioned with the inside of the first shell 1. Then 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.

[0057] Furthermore, in this embodiment, the secondary injection molded body 4 covers part of 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 the fuse 3.

[0058] Combination Figure 4 As shown, in this embodiment, the second housing 2 is provided with a second injection hole 26.

[0059] In other embodiments, a fuse is disclosed, including the fuse housing described in this embodiment. Example 2

[0060] like Figures 6-10 As shown, this embodiment discloses a fuse housing, including a first housing 1, a second housing 2, and a secondary injection molded body 4. The first housing 1 and the second housing 2 are combined to form a cylindrical structure, and both are primary injection molded bodies. The secondary injection molded body 4 is formed between the first housing 1 and the second housing 2 to form a sealing structure.

[0061] Specifically, the fuse housing also includes a fuse element 3, which is used to be positioned and installed between the first housing 1 and the second housing 2 during the second injection molding process. The secondary injection molding body 4 covers the fuse element 3, and the two ends of the fuse element 3 extend out of the two ends of the cylindrical structure and are used as wiring terminals.

[0062] Combination Figure 7 As shown, in this embodiment, the connecting edge of the first housing 1 is provided with a first groove 17 and four positioning holes 18, and the connecting edge of the second housing 2 is provided with a second groove 27 and four positioning posts 28. When the first housing 1 and the second housing 2 are combined, the positioning holes 18 and the positioning posts 28 are inserted and engaged, and the first groove 17 and the second groove 27 are combined to form an annular cavity.

[0063] Furthermore, combined Figure 6 As shown, in this embodiment, the sidewall of the first groove 17 is provided with a glue inlet. During the second injection molding process, the molten material is injected into the annular cavity through this glue inlet to form the secondary injection molded body 4. To increase the shear resistance of the secondary injection molded body 4 with the first shell 1 and the second shell 2, the grooves of the first groove 17 and the second groove 27 are provided with an uneven structure. Figure 8 As shown, in other embodiments, the bottom of the first groove 17 is smooth.

[0064] Furthermore, the first housing 1 has a first notch 15 at both ends of its axial direction, and the second housing 2 has a second notch 25 at both ends of its axial direction. The slots 33 at both ends of the fuse 3 respectively engage with the first notch 15 and the second notch 25. In this embodiment, the secondary injection molded body 4 fills the annular cavity and covers the first notch 15, the second notch 25, and part of the fuse 3.

[0065] Combination Figure 8 As shown in the figure, in this embodiment, the first shell 1 is provided with a first pouring hole 16.

[0066] In other embodiments, a fuse is disclosed, comprising the fuse shell as described in this embodiment. Embodiment three

[0067] As Figures 11-15 shown in the figure, in this embodiment, a fuse shell is disclosed, comprising a first shell 1, a second shell 2, and a secondary injection body 4, the first shell 1 and the second shell 2 combine to form a cylindrical structure, and both are primary injection bodies, the secondary injection body 4 is formed between the first shell 1 and the second shell 2 and forms a sealed structure.

[0068] Specifically, the fuse shell further comprises a fuse body 3, which is positioned and installed between the first shell 1 and the second shell 2 during the secondary injection process, the secondary injection body 4 covers the fuse body 3, and both ends of the fuse body 3 protrude from both ends of the cylindrical structure for use as a terminal.

[0069] Combination Figure 13 As shown in the figure, in this embodiment, the connecting edge of the first shell 1 is provided with a first groove 17 and four positioning holes 18, and the connecting edge of the second shell 2 is provided with a second groove 27 and four positioning columns 28. When the first shell 1 and the second shell 2 are combined, the positioning holes 18 and the positioning columns 28 are inserted and matched, and the first groove 17 and the second groove 27 combine to form an annular cavity.

[0070] Further, in combination Figures 13-14 As shown in the figure, in this embodiment, the connecting edge of the first shell 1 is provided with a first plug 19 and a first slot 17a, and the connecting edge of the second shell 2 is provided with a second plug 29 and a second slot 27a, the first plug 19 and the second plug 29 are oppositely arranged, the first plug 19 and the second slot 27a are inserted and matched, and the second plug 29 and the first slot 17a are inserted and matched. Each first plug 19 is provided with a plurality of first combination holes 19a, and each second plug 29 is provided with a plurality of second combination holes 29a. When the first plug 19 and the second slot 27a are inserted and matched, a gap is left between them for the molten material to flow into and fill the first combination holes 19a. Similarly, when the second plug 29 and the first slot 17a are inserted and matched, a gap is left between them for the molten material to flow into and fill the second combination holes 29a.

[0071] Further, in combination Figure 6As shown, in the embodiment, the sidewall of the first groove 17 is provided with a glue inlet point, and in the second injection process, the melt is injected into the annular cavity through the glue inlet point to form the second injection body 4. In order to increase the shear resistance of the second injection body 4 and the first shell 1 and the second shell 2, the groove of the first groove 17 and the second groove 27 is provided with a concave-convex structure.

[0072] Further, in the embodiment, the first shell 1 is provided with a first notch 15 at both axial ends, the second shell 2 is provided with a second notch 25 at both axial ends, and the clamping slot 33 at both ends of the fuse body 3 is clamped into the first notch 15 and the second notch 25 respectively. The fuse body 3 is provided with a connecting hole 32 at a position corresponding to the first notch 15 and the second notch 25, and the connecting hole 32 penetrates through both sides of the fuse body 3. In the embodiment, the second injection body 4 fills the annular cavity and wraps the first connecting hole 19a, the second connecting hole 29a, the connecting hole 32, the first notch 15, the second notch 25 and part of the position of the fuse body 3.

[0073] Further, in the embodiment, the inner sidewall of the first shell 1 is provided with a first reinforcing rib 111, and the inner sidewall of the second shell 2 is provided with a second reinforcing rib 211. When the first shell 1 and the second shell 2 are combined to form a cylindrical structure, the first reinforcing rib 111 is aligned with the second reinforcing rib 211.

[0074] In combination Figure 13 As shown, in the embodiment, the first shell 1 is provided with a first injection hole 16.

[0075] In other embodiments, a fuse is disclosed, which comprises the fuse shell as described in the embodiment. Embodiment Four

[0076] As Figures 16-19 As shown, in the embodiment, a fuse shell is disclosed, which comprises a first shell 1, a second shell 2 and a second injection body 4. The first shell 1 and the second shell 2 are combined to form a cylindrical structure, and both are one-time injection bodies. The second injection body 4 is formed between the first shell 1 and the second shell 2 and forms a sealed structure.

[0077] Specifically, the fuse shell further comprises a fuse body 3, which is used for positioning and mounting between the first shell 1 and the second shell 2 in the second injection process. The second injection body 4 wraps the fuse body 3, and both ends of the fuse body 3 protrude out of both ends of the cylindrical structure for use as a terminal.

[0078] In combination Figure 18As shown, in the embodiment, the connecting edge of the first shell 1 is provided with a first groove 17 and four positioning holes 18, and the connecting edge of the second shell 2 is provided with a second groove 27 and four positioning columns 28. When the first shell 1 and the second shell 2 are combined, the positioning holes 18 and the positioning columns 28 are inserted and matched, and the first groove 17 and the second groove 27 are combined to form an annular cavity.

[0079] Further, the first shell 1 and the second shell 2 are combined by means of a combination of the first groove 17 and the second groove 27. Figures 18-19 As shown, in the embodiment, the connecting edge of the first shell 1 is provided with a first plug 19 and a first slot 17a, and the connecting edge of the second shell 2 is provided with a second plug 29 and a second slot 27a. The first plug 19 and the second plug 29 are oppositely arranged, the first plug 19 is inserted and matched with the second slot 27a, and the second plug 29 is inserted and matched with the first slot 17a. Each first plug 19 is provided with a plurality of first combination holes 19a, and each second plug 29 is provided with a plurality of second combination holes 29a. When the first plug 19 is inserted and matched with the second slot 27a, a gap is left between them for the molten material to flow into and fill the first combination holes 19a. Similarly, when the second plug 29 is inserted and matched with the first slot 17a, a gap is left between them for the molten material to flow into and fill the second combination holes 29a.

[0080] Further, the first shell 1 and the second shell 2 are combined by means of a combination of the first groove 17 and the second groove 27. Figure 16 As shown, in the embodiment, the side wall of the first groove 17 is provided with a glue inlet point. In the second injection process, the molten material is injected into the annular cavity through the glue inlet point to form a secondary injection body 4. In order to increase the shear resistance of the secondary injection body 4 and the first shell 1 and the second shell 2, the groove of the first groove 17 and the second groove 27 is provided with a concave-convex structure.

[0081] Further, in the embodiment, the outer surface of the first shell 1 is provided with two first semicircular grooves 110 parallel to each other, and the outer surface of the second shell 2 is provided with two second semicircular grooves 210 parallel to each other. The first semicircular grooves 110 and the second semicircular grooves 210 are combined to form an annular structure around the cylindrical structure.

[0082] Further, in the embodiment, the two ends of the first shell 1 in the axial direction are provided with first notches 15, and the two ends of the second shell 2 in the axial direction are provided with second notches 25. The clamping grooves 33 at both ends of the fuse body 3 are respectively clamped into the first notches 15 and the second notches 25. The fuse body 3 is provided with a connecting hole 32 corresponding to the positions of the first notches 15 and the second notches 25, and the connecting hole 32 penetrates through both sides of the fuse body 3. In the embodiment, the secondary injection body 4 fills the annular cavity and wraps around the first combination holes 19a, the second combination holes 29a, the connecting hole 32, the first notches 15, the second notches 25, the first semicircular grooves 110, the second semicircular grooves 210, and part of the position of the fuse body 3.

[0083] Further, in the present embodiment, the inner side wall of the first shell 1 is provided with a first reinforcing rib 111, and the inner side wall of the second shell 2 is provided with a second reinforcing rib 211, when the first shell 1 and the second shell 2 are combined to form a cylindrical structure, the first reinforcing rib 111 is aligned with the second reinforcing rib 211. Figure 18 In the present embodiment, the first shell 1 is provided with a first pouring hole 16.

[0084] In other embodiments, a fuse is disclosed, comprising the fuse shell described in the present embodiment.

[0085] In the description of the present utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model.

[0086] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0087] In the present utility model, unless otherwise specifically defined and limited, the "on" or "under" of the first feature to the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the "above", "above" and "above" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0088] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as a limitation on the present utility model, and those skilled in the art can make changes, modifications, replacements and modifications to the above-mentioned embodiments within the scope of the present utility model.

Claims

1. A fuse housing characterized by: The fuse body comprises a first shell, a second shell and a secondary injection body, the first shell and the second shell combine to form a cylindrical structure, and both are primary injection bodies, and the secondary injection body is formed between the first shell and the second shell and forms a sealed structure.

2. A fuse housing according to claim 1, characterized in that: The first shell and the second shell are both provided with a flange and an annular groove, and the secondary injection body covers the annular groove.

3. A fuse housing according to claim 2, characterized in that: The flange is provided with a plurality of through holes, and when the first shell and the second shell are combined and spliced, the through holes on the two are aligned to form a channel structure, and the secondary injection body covers the channel structure.

4. A fuse housing according to claim 1, characterized in that: The connecting edges of the first shell and the second shell are staggered with a plug and a socket, and the plug and the socket are inserted and matched.

5. A fuse housing according to claim 4, characterized in that: The plug is provided with a combination hole, and the secondary injection body covers the combination hole.

6. A fuse housing according to claim 1, characterized in that: The connecting edges of the first shell and the second shell are both provided with a groove, and the grooves on the two combine to form a cavity, and the secondary injection body fills the cavity.

7. A fuse housing according to any one of claims 1-6, characterized in that: It also comprises a fuse body, which is positioned and installed between the first shell and the second shell during the secondary injection process, the secondary injection body covers the fuse body, and the two ends of the fuse body protrude out of the two ends of the cylindrical structure.

8. A fuse housing according to claim 7, characterized in that: The fuse body is provided with a limiting part or a connecting hole, and the secondary injection body covers the connecting hole.

9. The fuse body according to claim 7, wherein: One of the first shell and the second shell is provided with a first stop, and the other is provided with a second stop matched with the first stop; and / or One of the first shell and the second shell is provided with a positioning column, and the other is provided with a positioning hole; and / or The outer surfaces of the first shell and the second shell are both provided with a semicircular groove, and the semicircular grooves on the two combine to form an annular structure around the cylindrical structure, and the secondary injection body covers the annular structure; and / or The first shell and / or the second shell is provided with a reinforcing rib; and / or The first shell and / or the second shell is provided with a material injection hole; and / or The first shell and / or the second shell is provided with a notch, and the fuse body is embedded in the notch during the secondary injection process.

10. A fuse, characterized by: The fuse body comprises any one of claims 1-9.

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