Fuse and electric equipment
By designing a combined structure of insulated shell, side panel, heat dissipation plate and melt in the fuse, the problem of heat dissipation of existing fuses under pulse current is solved, and a more uniform temperature distribution and longer equipment use is achieved. life.
Patent Information
- Application Number
- CN202323419742.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-14
AI Technical Summary
The existing fuses have poor heat dissipation under pulse current, which leads to heat accumulation, which may lead to abnormal fuse and damage the working conditions of the equipment.
A fuse including an insulated shell, side plate, heat dissipation plate and melt is designed. The second area of the side plate is spaced between the heat dissipation plate and the insulated shell, which increases the solid gas contact area and enhances the heat dissipation ability.
By increasing the solid gas contact area and optimizing the heat dissipation structure, the heat dissipation ability of the fuse is improved, making the temperature distribution more uniform and extending the service life of the equipment.
Smart Images
Figure CN222462813U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit protection, in particular to a fuse and an electrical device. Background Art
[0002] As a protective device for short circuit or overload current system, fuse is widely used in electrical equipment and is the last guarantee for power transmission safety. Fuses are electronic devices based on the thermoelectric effect as the main working principle, so it is necessary to perform thermal management on their operation in the power system. Under pulse current, a large amount of heat will be generated in the fuse. The heat dissipation of fuses in the prior art is poor, and a large amount of heat will accumulate, causing the fuse to blow abnormally, seriously damaging the working condition of the fuse. Utility Model Content
[0003] The utility model aims to provide a fuse and an electrical device to solve the problem of poor heat dissipation of the fuse.
[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:
[0005] In a first aspect, the utility model provides a fuse, comprising: an insulating shell; a side plate, the side plate comprising a first surface, the first surface comprising a first area and a second area, the first area being used to be in close contact with the insulating shell; a heat sink connected to the side plate and arranged in the second area, the heat sink being spaced apart from the insulating shell; and a fuse disposed in the insulating shell.
[0006] In one embodiment, one end of the heat dissipation plate is connected to one end of the side plate, and the other end protrudes out of the second area.
[0007] In one embodiment, a first angle A is formed between the heat dissipation plate and the side plate, satisfying: 60°≤A≤120°.
[0008] In one embodiment, the fuse further includes a mounting plate, one end of which is connected to an end of the side plate away from the heat sink and protrudes from a second surface, and the second surface is opposite to the first surface.
[0009] In one embodiment, a second angle B is formed between the mounting plate and the side plate, satisfying: 60°≤B≤120°.
[0010] In one embodiment, a through first hole is formed on the mounting plate.
[0011] In one embodiment, the fuse further includes a first plate, and the first plate is connected to the mounting plate.
[0012] In one embodiment, one end of the first plate is connected to the mounting plate, and the other end extends toward a side facing away from the side plate.
[0013] In one embodiment, a through second hole is opened on the side plate, the second hole is arranged in the first area, and the second hole is used to install the insulating shell.
[0014] In one embodiment, a through sand-filling hole is further provided on the side plate, and the sand-filling hole is arranged in the first area, and the sand-filling hole is used to fill the insulating shell with arc-extinguishing medium.
[0015] In a second aspect, the utility model further provides an electrical device, comprising the fuse as described in the first aspect.
[0016] By setting a fuse, the fuse includes an insulating shell, a side plate, a heat sink and a fuse, the side plate includes a first surface, the first surface includes a first area and a second area, the first area is used to be in close contact with the insulating shell, the heat sink is connected to the side plate and is arranged in the second area, the heat sink and the insulating shell are spaced apart, and the fuse is arranged in the insulating shell, which increases the solid-gas contact area, increases the heat dissipation capacity of the fuse, and makes the overall temperature distribution of the fuse more uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 is a front view of a fuse according to an embodiment;
[0019] Figure 2 is a top view of a fuse according to an embodiment;
[0020] Figure 3 is a side view of a fuse according to an embodiment.
[0021] Description of reference numerals:
[0022] 10-fuse, 11-side plate, 12-first surface, 121-first area, 122-second area, 123-second hole, 124-sand filling hole, 13-second surface, 14-heat dissipation plate, 15-mounting plate, 151-first hole, 16-first plate, 17-heat dissipation hole, 20-insulating shell, 21-melt, 22-bolt. DETAILED DESCRIPTION
[0023] 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 of 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.
[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.
[0025] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.
[0026] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0027] The utility model embodiment provides a fuse 10, please refer to Figure 1 and Figure 2 , includes a side plate 11 , a first surface 12 , a first region 121 , a second region 122 , an insulating shell 20 and a melt 21 .
[0028] Optionally, the material of the insulating shell 20 may be, but is not limited to, ceramic, glass fiber tube, polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyimide, natural rubber, styrene-butadiene rubber, silicone rubber, and the like.
[0029] The side plate 11 includes a first surface 12, and the first surface 12 includes a first area 121 and a second area 122. The first area 121 is used to be in close contact with the insulating housing 20. Optionally, the shape of the side plate 11 can be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the side plate 11 can be, but not limited to, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse, etc. Optionally, the side plate 11 is made of T2 copper material, and several processes such as nickel removal and tin plating are used on the side plate 11 to reduce the temperature rise of the side plate 11 and improve the vibration resistance, impact resistance and corrosion resistance of the side plate 11. Optionally, the shape of the first area 121 can be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the first area 121 can be, but not limited to, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse, etc. Optionally, the shape of the second area 122 can be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the second region 122 may be, but is not limited to, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse, or the like.
[0030] The heat dissipation plate 14 is connected to the side plate 11 and is disposed in the second area 122 . The heat dissipation plate 14 is spaced apart from the insulating housing 20 .
[0031] The melt 21 is disposed in the insulating housing 20 .
[0032] Optionally, the first surface 12 is polished, and the polishing method may be fluid polishing, mechanical polishing, ultrasonic polishing, chemical polishing, electrolytic polishing, etc. Polishing the first surface 12 improves the smoothness of the first surface 12 and avoids scratching the insulating shell 20.
[0033] By setting the fuse 10, the fuse 10 includes an insulating shell 20, a side plate 11, a heat sink 14 and a fuse 21, the side plate 11 includes a first surface 12, the first surface 12 includes a first area 121 and a second area 122, the first area 121 is used to be in close contact with the insulating shell 20, the heat sink 14 is connected to the side plate 11 and is arranged in the second area 122, the heat sink 14 and the insulating shell 20 are spaced apart, the fuse 21 is arranged on the insulating shell 20, the second area 122 is used for heat dissipation, is not in close contact with the insulating shell 20, and the solid-gas contact area is increased. The utility model improves the heat dissipation capacity of the fuse 10.
[0034] In one embodiment, please refer to Figure 1 and Figure 2 The fuse 10 further includes a heat sink 14 , one end of which is connected to one end of the side plate 11 , and the other end of which protrudes out of the second area 122 .
[0035] Optionally, the shape of the heat sink 14 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the heat sink 14 may be, but is not limited to, quadrilateral, pentagon, hexagon, octagon, circular, elliptical, etc.
[0036] Optionally, the distance that one end of the heat sink 14 protrudes from the second area 122 ranges from 15 mm to 30 mm. Optionally, the distance that one end of the heat sink 14 protrudes from the second area 122 ranges from 15 mm, 18 mm, 20 mm, 30 mm, etc.
[0037] Optionally, the heat sink 14 and the side plate 11 may be an integrated structure and formed by stamping. Optionally, the heat sink 14 and the side plate 11 may be welded together, and the specific welding method between the heat sink 14 and the side plate 11 is brazing, which is simple to operate and has a stable connection.
[0038] Optionally, a rounded corner is provided at one end of the heat dissipation plate 14 away from the side plate 11 to avoid scratching other parts. Optionally, a circular arc transition is provided at the connection between one end of the heat dissipation plate 14 and one end of the side plate 11.
[0039] Optional, please refer to Figure 1 and Figure 2 There is a spacing distance between the heat dissipation plate 14 and the insulating shell 20.
[0040] Optionally, the distance between the heat sink 14 and the insulating housing 20 is in a range of 20 mm to 30 mm.
[0041] Optionally, the distance between the heat sink 14 and the insulating housing 20 may be, but is not limited to, 20 mm, 22 mm, 25 mm, 26 mm, 30 mm, etc.
[0042] Specifically, the heat sink 14 improves the heat dissipation capability of the fuse 10 and reduces the temperature rise of the fuse 10 .
[0043] In one embodiment, please refer to Figure 1 and Figure 2 There is a first angle A between the heat dissipation plate 14 and the side plate 11, which satisfies: 60°≤A≤120°.
[0044] Optionally, the first angle A between the heat sink 14 and the side plate 11 may be, but is not limited to, 60°, 70°, 80°, 90°, 120°, etc.
[0045] Optionally, the first angle A allows for flexible arrangement between the heat sink 14 and the side panel 11 .
[0046] In one embodiment, please refer to Figure 1 and Figure 2The fuse 10 further includes a mounting plate 15 , one end of which is connected to an end of the side plate 11 away from the heat dissipation plate 14 and protrudes from the second surface 13 , and the second surface 13 is opposite to the first surface 12 .
[0047] Optionally, the mounting plate 15 and the side plate 11 may be an integrated structure and formed by stamping. Optionally, the mounting plate 15 and the side plate 11 may be welded together, and the specific welding method between the mounting plate 15 and the side plate 11 is brazing, and the brazing connection method is simple to operate and has a stable connection.
[0048] Optionally, the second surface 13 is polished, and the polishing method can be fluid polishing, mechanical polishing, ultrasonic polishing, chemical polishing and electrolytic polishing, etc. Polishing the second surface 13 improves the smoothness of the second surface 13 and avoids scratching other parts. Optionally, the second surface 13 is chemically polished, and the specific process is to use an oxidant solution to oxidize the surface of the second surface 13 under certain conditions, and this oxide layer can gradually dissolve into the solution. The micro-protrusions of the second surface 13 are oxidized faster and more, while the micro-concave parts are oxidized slowly and less. Similarly, the oxide layer at the protrusions diffuses more and faster than everywhere, and dissolves in the solution, so that the surface of the second surface 13 is gradually flattened to avoid scratching the insulating shell 20. Using chemical polishing to treat the second surface 13 can protect the thin wall of the second surface 13, avoid affecting the rigidity of the material, and make the second surface 13 smooth and glossy. This type of polishing is simple to operate and has high processing efficiency.
[0049] Optionally, the shape of the mounting plate 15 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the mounting plate 15 may be, but is not limited to, quadrilateral, pentagon, hexagon, octagon, circular, elliptical, etc.
[0050] Optionally, the distance that one end of the mounting plate 15 protrudes from the second surface 13 ranges from 10 mm to 30 mm. Optionally, the distance that one end of the mounting plate 15 protrudes from the second surface 13 ranges from 10 mm, 18 mm, 20 mm, 30 mm, etc.
[0051] Optionally, the mounting plate 15 is made of T2 copper material, and several processes such as nickel removal and tin plating are applied to the mounting plate 15 to reduce the temperature rise of the mounting plate 15 and improve the vibration resistance, impact resistance and corrosion resistance of the mounting plate 15.
[0052] Optionally, the end of the mounting plate 15 away from the side plate 11 is provided with a rounded corner to avoid scratching other parts. Optionally, the connection between one end of the mounting plate 15 and the end of the side plate 11 away from the heat sink 14 is provided with an arc transition.
[0053] Specifically, the mounting plate 15 improves the heat dissipation capability of the fuse 10 and reduces the temperature rise of the fuse 10 .
[0054] In one embodiment, please refer to Figure 1 and Figure 2 There is a second angle B between the mounting plate 15 and the side plate 11, which satisfies: 60°≤B≤120°.
[0055] Optionally, the second angle B between the mounting plate 15 and the side plate 11 may be, but is not limited to, 60°, 70°, 80°, 90°, 120°, etc.
[0056] Specifically, the second angle B improves the flexibility of arrangement between the mounting plate 15 and the side plate 11 .
[0057] In one embodiment, please refer to Figure 1 and Figure 2 A through first hole 151 is formed on the mounting plate 15 .
[0058] Optionally, the first hole 151 may be a polygonal hole, a circular hole, an elliptical hole, an irregular hole, etc. Optionally, the first hole 151 may be, but is not limited to, a quadrilateral hole, a pentagonal hole, a hexagonal hole, an octagonal hole, a circular hole, an elliptical hole, etc.
[0059] Optionally, the first hole 151 can be used for heat exchange, and the first hole 151 can also be used to install relays and switches, etc. Optionally, there are multiple first holes 151, and the multiple first holes 151 are arranged at intervals. Optionally, the multiple first holes 151 are arranged at equal intervals.
[0060] Optionally, the diameter of the first hole 151 ranges from 5 mm to 10 mm. Optionally, the diameter of the first hole 151 may specifically be, but is not limited to, 5 mm, 6 mm, 8 mm, 10 mm, and the like.
[0061] Optionally, the mounting plate 15 is further provided with a plurality of through heat dissipation holes 17, and the heat dissipation holes 17 are used for heat dissipation.
[0062] Optionally, protrusions may be provided on both sides of the mounting plate 15, and the protrusions may facilitate installation.
[0063] Specifically, the first hole 151 improves the heat dissipation capability of the mounting plate 15 .
[0064] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 The fuse 10 further includes a first plate 16 , which is connected to the mounting plate 15 .
[0065] Optionally, the first plate 16 may extend in multiple directions.
[0066] Optionally, the shape of the first plate 16 may be polygonal, circular, elliptical, irregular, etc. Optionally, the shape of the first plate 16 may be, but is not limited to, quadrilateral, pentagon, hexagon, octagon, circular, elliptical, etc.
[0067] Specifically, the first plate 16 improves the heat dissipation capability of the fuse 10 and reduces the temperature rise of the fuse 10 .
[0068] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 One end of the first plate 16 is connected to the mounting plate 15 , and the other end extends toward a side facing away from the side plate 11 .
[0069] Optionally, a third angle C is formed between the mounting plate 15 and the first plate 16, satisfying: 60°≤C≤120°.
[0070] Optionally, the third angle C between the mounting plate 15 and the first plate 16 may be, but is not limited to, 60°, 70°, 80°, 90°, 120°, etc.
[0071] Optionally, the first plate 16 is made of T2 copper material, and several processes such as nickel removal and tin plating are applied to the first plate 16 to reduce the temperature rise of the first plate 16 and improve the vibration resistance, impact resistance and corrosion resistance of the first plate 16.
[0072] Optionally, a rounded corner is provided at one end of the first plate 16 away from the mounting plate 15 to avoid scratching other parts. Optionally, a circular arc transition is provided at the connection between one end of the first plate 16 and the mounting plate 15.
[0073] Specifically, the first plate 16 improves the heat dissipation capability of the fuse 10 .
[0074] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 A through second hole 123 is opened on the side plate 11 . The second hole 123 is arranged in the first area 121 . The second hole 123 is used to install the insulating housing 20 .
[0075] Optionally, the diameter of the second hole 123 ranges from 5 mm to 10 mm. Optionally, the diameter of the second hole 123 may specifically be, but is not limited to, 5 mm, 6 mm, 8 mm, and 10 mm.
[0076] Optionally, the second hole 123 may be a polygonal hole, a circular hole, an elliptical hole, an irregular hole, etc. Optionally, the second hole 123 may be, but is not limited to, a quadrilateral hole, a pentagonal hole, a hexagonal hole, an octagonal hole, a circular hole, an elliptical hole, etc.
[0077] Optionally, there are multiple second holes 123 , and the multiple second holes 123 are arranged at intervals.
[0078] Specifically, the second hole 123 improves the convenience of installing the insulating housing 20 .
[0079] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 A through sand-filling hole 124 is also provided on the side plate 11 . The sand-filling hole 124 is arranged in the first area 121 . The sand-filling hole 124 is used to fill the insulating housing 20 with arc-extinguishing medium.
[0080] Optionally, the diameter of the sand filling hole 124 ranges from 5 mm to 10 mm. Optionally, the diameter of the sand filling hole 124 can be, but is not limited to, 5 mm, 6 mm, 8 mm, 10 mm, etc.
[0081] Optionally, the sand filling hole 124 is disposed between the plurality of second holes 123. Optionally, the sand filling hole 124 may be a polygonal hole, a circular hole, an elliptical hole, an irregular hole, etc. Optionally, the sand filling hole 124 may be, but is not limited to, a quadrilateral hole, a pentagonal hole, a hexagonal hole, an octagonal hole, a circular hole, an elliptical hole, etc.
[0082] Optionally, there are multiple sand filling holes 124, and the multiple sand filling holes 124 are arranged at intervals. Optionally, the multiple sand filling holes 124 are arranged at equal intervals.
[0083] Optionally, the arc extinguishing medium is quartz sand, which is poured into the insulating housing 20 through the sand filling holes 124 on the side plate 11 .
[0084] Optionally, the melt 21 is a conductive current-resistant material such as silver or copper. It is the main component of the fuse 10 for current carrying and breaking, and is connected by welding to ensure system access and good heat conduction. Optionally, the connection between the melt 21 and the side plate 11 is welding, and the specific welding method between the melt 21 and the side plate 11 is brazing. A metal material with a lower melting point than the melt 21 and the side plate 11 is used as a brazing material. The melt 21, the side plate 11 and the brazing material are heated to a temperature higher than the melting point of the brazing material and lower than the melting point of the melt 21 and the side plate 11. The liquid brazing material is used to wet the melt 21 and the side plate 11, fill the interface gap, and realize mutual diffusion between atoms with the melt 21 and the side plate 11, thereby realizing welding. The welding connection method is simple to operate and has a stable connection.
[0085] Specifically, the sand filling holes 124 improve the convenience of filling the arc extinguishing medium into the insulating housing 20 .
[0086] The utility model embodiment also provides a fuse 10, please refer to Figure 1 , Figure 2 and Figure 3 , including a first side plate, a second side plate, a first heat dissipation plate, a second heat dissipation plate, a first mounting plate, a second mounting plate and an insulating shell, the first side plate and the second side plate are connected at both ends of the insulating shell, the first side plate and the second side plate are any one of the aforementioned side plates 11, the first heat dissipation plate and the second heat dissipation plate are any one of the aforementioned heat dissipation plates 14, and the first mounting plate and the second mounting plate are any one of the aforementioned mounting plates 15.
[0087] Specifically, the heat-generating sites of the fuse are brought closer together, and the heat dissipation gradients at the sites are superimposed and enhanced, resulting in the concentration of heat at the joints between the plates and the gaps between the holes. While increasing the heat dissipation area, the heat generation is concentrated, which can speed up the heat dissipation speed to a certain extent.
[0088] Optionally, the first side plate, the first heat dissipation plate and the first mounting plate are an integrated structure, formed by extending, bending and hollowing out a metal plate in multiple directions, forming a first contact knife. Optionally, the second side plate, the second heat dissipation plate and the second mounting plate are an integrated structure, formed by extending, bending and hollowing out a metal plate in multiple directions, forming a second contact knife.
[0089] Specifically, the side panels 11, the heat sink 14 and the mounting plate 15 are extended, bent and hollowed out in multiple directions according to the gas-solid heat transfer characteristics and the heat dissipation method, so as to improve the heat dissipation capacity of the fuse 10, reduce the temperature rise of the fuse 10, and improve the space utilization rate. In addition, the overall structure of the fuse helps to weaken the heat accumulation at the fuse 10 and enhance the heat dissipation capacity of the fuse 10. Strengthening the heat dissipation capacity of the fuse 10 is beneficial to reduce the heat accumulation of the melt 21 and extend the pulse resistance life of the fuse 10 on the one hand, and on the other hand, it helps the fuse 10 to be used in combination with other electronic devices and improve the service life of the power system.
[0090] Specifically, the fuse has a simple structural design, is easy to process and prepare, and has no external accessories.
[0091] Optionally, the fuses are made of T2 copper material, and several processes such as nickel removal and tin plating are used on the fuses to reduce the temperature rise of the fuse 10 and improve the vibration resistance, impact resistance and corrosion resistance of the fuse.
[0092] Optionally, the fuse 10 further includes a plurality of connecting parts, which are used to connect with the insulating housing 20 and the fuse 21 through the second hole 123. Optionally, the connecting part is a bolt 22. Optionally, the bolt 22 is made of stainless steel or other materials. Optionally, the bolt 22 can be specifically but not limited to a hexagonal head bolt 22, a square head bolt 22, a round head bolt 22, a countersunk bolt 22, a T-bolt 22, and a live bolt 22.
[0093] Optionally, designs such as folded portions and corrugated etched portions may be added to the side panel 11 to increase the heat dissipation contact area.
[0094] The embodiment of the utility model further provides an electrical device, including the aforementioned fuse 10. Optionally, the electrical device may be a fuel vehicle, a new energy vehicle, or the like.
[0095] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship of the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0096] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the present invention still fall within the scope covered by the present invention.
Claims
1. A fuse, characterized in that: include: Insulating housing; A side plate, the side plate comprising a first surface, the first surface comprising a first area and a second area, the first area being used to be in close contact with the insulating housing; a heat dissipation plate connected to the side plate and arranged in the second area, the heat dissipation plate being spaced apart from the insulating housing; The melt is arranged in the insulating shell.
2. The fuse according to claim 1, characterized in that: One end of the heat dissipation plate is connected to one end of the side plate, and the other end protrudes from the second area.
3. The fuse according to claim 1, characterized in that: A first angle A is formed between the heat dissipation plate and the side plate, satisfying: 60°≤A≤120°.
4. The fuse according to claim 1, characterized in that: The fuse further includes a mounting plate, one end of which is connected to an end of the side plate away from the heat dissipation plate and protrudes from a second surface, and the second surface is opposite to the first surface.
5. The fuse according to claim 4, characterized in that: A second angle B is formed between the mounting plate and the side plate, satisfying: 60°≤B≤120°.
6. The fuse according to claim 4, characterized in that: The mounting plate is provided with a first through hole.
7. The fuse according to claim 4, characterized in that: The fuse also includes a first plate connected to the mounting plate.
8. The fuse according to claim 7, characterized in that: One end of the first plate is connected to the mounting plate, and the other end extends toward a side facing away from the side plate.
9. The fuse according to claim 1, characterized in that: The side plate is provided with a through second hole, the second hole is arranged in the first area, and the second hole is used for installing the insulating shell.
10. The fuse according to claim 1, characterized in that: The side plate is also provided with a through sand-filling hole, which is arranged in the first area and is used to fill the insulating housing with an arc-extinguishing medium.
11. An electrical device, characterized in that: Comprising the fuse according to any one of claims 1 to 10.