Vertical fuse

Abstract

The utility model provides a vertical fuse which comprises a fuse tube body and a fuse body, a first containing cavity is formed in the fuse body, a first through hole and a second through hole are formed in the first end face of the fuse tube body, the first end face of the fuse body penetrates out of the first through hole to form a first electrode, and the second end face of the fuse body penetrates out of the second through hole to form a second electrode; the maximum diameter of the first end face of the fuse tube body and the maximum diameter of the second end face of the fuse tube body are both smaller than the length of the fuse tube body in the first direction. The first end face is parallel to the second end face, and the first direction is the direction from the first end face to the second end face or from the second end face to the first end face; the first accommodating cavity is filled with an arc extinguishing medium, and the arc extinguishing medium wraps the melt. Therefore, the electrodes are arranged on the same end face of the fuse tube body, so that the area of a fused mounting surface is reduced, the transverse projection area of the fuse in a circuit is further reduced, and the longitudinal space utilization rate of equipment is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of emergency protection devices, and particularly relates to a vertical fuse. BACKGROUND

[0002] At present, in the development process of new energy vehicles, efficient use of the vehicle space is crucial, and miniaturization of OBC (On-Board Charger, referring to a vehicle charger) gradually becomes a development trend of the industry.

[0003] The wiring terminal of the traditional fuse generally adopts a horizontal installation mode, and has a large transverse (i.e. a direction horizontal to the circuit board) projection area in the circuit and a low longitudinal (i.e. a direction vertical to the circuit board) space utilization rate. CONTENT OF THE INVENTION

[0004] The application provides a vertical fuse, so as to reduce the transverse projection area of the fuse in the circuit and improve the longitudinal space utilization rate of the equipment.

[0005] In a first aspect, the application provides a vertical fuse, comprising a fuse tube and a fuse body, a first accommodating cavity is arranged in the fuse, a first through hole and a second through hole are arranged on a first end face of the fuse tube, a first electrode is formed by the first end face of the fuse body penetrating out of the first through hole, and a second electrode is formed by a second end face of the fuse body penetrating out of the second through hole.

[0006] The maximum diameter of the first end face of the fuse tube and the maximum diameter of the second end face of the fuse tube are both smaller than the length of the first direction of the fuse tube; the first end face is parallel to the second end face, and the first direction is the direction from the first end face to the second end face or from the second end face to the first end face.

[0007] An arc extinguishing medium is filled in the first accommodating cavity, and the arc extinguishing medium is wrapped on the fuse body.

[0008] In combination with the first aspect, in some implementation manners of the first aspect, the fuse tube is formed by combination of a first tube and a second tube, the first tube is provided with a first groove, and the second tube is provided with a second groove; when the first tube and the second tube are combined, the first groove and the second groove are combined to form the first accommodating cavity.

[0009] In combination with the first aspect, in some implementation manners of the first aspect, the fuse tube is formed by combination of a first tube and a second tube, the second tube is provided with a second groove, and the first tube is a cover plate matched with the second groove; when the first tube and the second tube are combined, the cover plate covers the second groove to form the first accommodating cavity.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the first end face is disposed on the first tube body, and the second end face is disposed on the second tube body; or, the first tube body and the second tube body are combined to form the first end face and the second end face.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the fuse further includes at least one first fixing member surrounding the fuse tube body; or, the fuse further includes a first fixing member surrounding the joint between the first tube body and the second tube body, wherein the first circumference of the inner ring of the first fixing member is less than the second circumference of the first tube body and the second tube body, and the second circumference refers to the circumference of the first tube body and the second tube body at the position where the first fixing member surrounds them.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, at least one second fixing member is provided on the first fixing member, and at least one first mating part adapted to the at least one second fixing member is provided on the fuse tube body; the first mating part cooperates with the second fixing member, so that the first fixing member is fixed on the fuse tube body.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the second fixing member is a protrusion with a movable buckle. When the movable buckle engages with the first mating part, the movable buckle engages with the first mating part, thereby fixing the second fixing member to the fuse tube body.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the first fastener includes a first sub-fastener and a second sub-fastener, the first sub-fastener and the second sub-fastener cooperating to surround the fuse tube body.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, a third fixing member is provided on the first sub-fixing member, a fourth fixing member is provided on the second sub-fixing member, a second mating part is provided on the first tube body, and a third mating part is provided on the second tube body; the third fixing member and the second mating part are combined to fix the first sub-fixing member around the first tube body, and the fourth fixing member and the third mating part are combined to fix the second sub-fixing member around the second tube body.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the melt is U-shaped, and the two straight sides of the U-shape are respectively provided with the first fusion cut-off portion and the second fusion cut-off portion. The first fusion cut-off portion is provided with a plurality of first hollow portions, and the second fusion cut-off portion is provided with a plurality of second hollow portions. The first hollow portion includes at least two adjacent third through holes, and the second hollow portion includes at least two adjacent fourth through holes.

[0017] As can be seen, in this application, the vertical fuse includes a fuse tube and a fusible element. The fuse has a first receiving cavity. The first end face of the fuse tube has a first through hole and a second through hole. The first end face of the fusible element extends through the first through hole to form a first electrode, and the second end face of the fusible element extends through the second through hole to form a second electrode. The maximum diameter of both the first and second end faces of the fuse tube is smaller than the length of the fuse tube in a first direction. The first end face is parallel to the second end face, and the first direction is the direction from the first end face to the second end face or from the second end face to the first end face. The first receiving cavity is filled with an arc-extinguishing medium, which wraps around the fusible element. By placing the electrodes on the same end face of the fuse tube, the area of ​​the fuse mounting surface is reduced, thereby reducing the lateral projection area of ​​the fuse in the circuit and improving the vertical space utilization of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the vertical fuse provided in Embodiment 1 of this application;

[0020] Figure 2 This is a schematic diagram of the structure of the melt provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the fuse tube of the vertical fuse provided in Embodiment 1 of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the vertical fuse according to Embodiment 3 provided in this application;

[0023] Figure 5 This is a schematic diagram of the fuse tube of the vertical fuse provided in Embodiment 3 of this application;

[0024] Figure 6 This is a schematic diagram of the fuse tube of a vertical fuse including an insulating gasket provided in an embodiment of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, systems, products, or apparatuses.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] Currently, traditional fuse terminals are generally installed horizontally, resulting in a large projected area in the circuit (i.e., horizontal to the circuit board) and low space utilization in the vertical direction (i.e., perpendicular to the circuit board).

[0029] To address the aforementioned issues, this application provides a vertical fuse. This vertical fuse can be applied to circuit protection scenarios with limited lateral projection area. The vertical fuse includes a fuse tube and a fusible element. A first receiving cavity is provided within the fuse. A first through hole and a second through hole are provided on the first end face of the fuse tube. A first electrode is formed by the first end face of the fusible element extending through the first through hole, and a second electrode is formed by the second end face of the fusible element extending through the second through hole. The maximum diameter of both the first and second end faces of the fuse tube is smaller than the length of the fuse tube in a first direction. The first end face and the second end face are parallel, and the first direction is the direction from the first end face to the second end face or vice versa. The first receiving cavity is filled with an arc-extinguishing medium, which wraps around the fusible element. By placing the electrodes on the same end face of the fuse tube, the area of ​​the fuse mounting surface is reduced, thereby decreasing the lateral projection area of ​​the fuse in the circuit and improving the vertical space utilization of the equipment. This solution can be applied to a variety of scenarios, including but not limited to the application scenarios mentioned above.

[0030] The specific structure will be described in detail below.

[0031] Please see Figures 1-5 This application also provides a vertical fuse, including a fuse tube and a fuse element 30. The fuse has a first receiving cavity. The first end face 101 of the fuse tube has a first through hole 12 and a second through hole 22. The first end face 101 of the fuse element 30 extends through the first through hole 12 to form a first electrode 31, and the second end face 102 of the fuse element 30 extends through the second through hole 22 to form a second electrode 32.

[0032] The maximum diameter of the first end face 101 of the fuse tube and the maximum diameter of the second end face 102 of the fuse tube are both smaller than the length of the fuse tube in the first direction; the first end face 101 is parallel to the second end face 102, and the first direction is the direction from the first end face 101 to the second end face 102 or from the second end face 102 to the first end face 101.

[0033] The first accommodating cavity is filled with an arc-extinguishing medium 40, which coats the melt 30. The arc-extinguishing material includes, but is not limited to, one or more of quartz sand, gas-generating materials, silica gel, and silicone resin.

[0034] In a specific implementation, a first through-hole 12 and a second through-hole 22 are provided on a first end face 101 of the fuse tube body with a relatively small size, so that the first end and the second end of the fuse wire 30 can respectively pass through the first through-hole 12 and the second through-hole 22 to form a first electrode 31 and a second electrode 32. Since the first end face 101 and the second end face 102 are two parallel faces, and the maximum diameters of the first end face 101 and the second end face 102 are both smaller than the length from the first end face 101 to the second end face 102; therefore, when the vertical fuse in this embodiment is installed in a circuit, the vertical fuse can be connected to the circuit in a vertical manner with one end downward. Compared with other fuses of the same size, the lateral projection area in the circuit is smaller, and the tube body extends in the longitudinal direction, improving the utilization rate of the longitudinal space.

[0035] In a specific implementation, the fuse wire 30 is arranged in a U shape. The U-shaped fuse wire 30 is arranged in the first accommodating cavity, and the first end and the second end of the U-shaped fuse wire 30 respectively pass through the first through-hole 12 and the second through-hole 22 to penetrate out of the first accommodating cavity, thereby forming a first electrode 31 and a second electrode 32. The vertical fuse can be installed in the circuit through the first electrode 31 and the second electrode 32.

[0036] Among them, the first accommodating cavity includes a first cavity wall 103 and a second cavity wall 104. The first end face 101 and the second end face 102 are the outer walls of the first accommodating cavity, the first cavity wall 103 and the second cavity wall 104 are the inner walls of the first accommodating cavity, the first end face 101 and the first cavity wall 103 are at the same end of the fuse tube body, and the second end face 102 and the second cavity wall 104 are at the same end of the fuse tube body. A certain distance should be reserved between the top of the U-shaped fuse wire 30 and the second cavity wall 104 of the first accommodating cavity to reduce the temperature rise at the top of the fuse tube body and prevent excessive deposition of the molten metal vapor of the splashing fuse wire 30 at the top of the product when the product is interrupted, resulting in overheating and burning through at the top.

[0037] In addition, the first electrode 31 and the second electrode 32 can be integrally formed with the fuse wire body 33, which also eliminates the influence of welding on the resistance value of the product, and has the remarkable advantages of high consistency of the product resistance value and low temperature rise. It can be understood that the first electrode 31 and the second electrode 32 can also be detachably connected to the fuse wire body 33, and no unique limitation is made here.

[0038] It can be understood that in addition to being arc-shaped, the bottom of the U shape can also be straight (such as "凵"), or can also be oblique, and no limitation is made here.

[0039] Furthermore, the two straight sides of the U-shape are respectively provided with the first fusing portion 34 and the second fusing portion 35. The first fusing portion 34 is provided with multiple first hollow portions, and the second fusing portion 35 is provided with multiple second hollow portions. The first hollow portion includes at least two adjacent third through holes, and the second hollow portion includes at least two adjacent fourth through holes. In this way, the multiple hollow portions make the molten material 30 of the first fusing portion 34 and the second fusing portion 35 thinner, making it easier to be melted by a large current.

[0040] The fuse tube body includes a first tube body 10 and a second tube body 20. The first tube body 10 and the second tube body 20 have various shapes. The following describes different embodiments of the first tube body 10 and the second tube body 20.

[0041] Example 1

[0042] In one possible embodiment, please refer to Figure 3 The fuse tube body is formed by combining a first tube body 10 and a second tube body 20. The first tube body 10 is provided with a first groove 11, and the second tube body 20 is provided with a second groove 21. When the first tube body 10 and the second tube body 20 are combined, the first groove 11 and the second groove 21 combine to form the first receiving cavity.

[0043] The fuse tube body is composed of two semi-cylindrical parts (i.e., the first tube body 10 and the second tube body 20) that are closed at both ends and have a groove in the middle. The assembly method can be welding, bonding, fastening, fixing with fasteners, etc., and is not limited to one method. The welding method can include ultrasonic welding or other welding methods.

[0044] Specifically, as shown in the figure, the connecting seam when the first tube body 10 and the second tube body 20 are combined is located in the first direction, that is, the two vertically divided tube halves are combined to form the fuse tube body. A first groove 11 is formed by recessing inward in the first tube body 10 in the second direction, and a second groove 21 is formed by recessing inward in the second tube body 20 in the second direction; wherein, the second direction is the direction parallel to the first end face 101 and the second end face 102.

[0045] The fuse tube body, after being combined with the first tube body 10, forms a closed cavity by aligning the cavities inside, thus creating a first receiving cavity. Further, the first tube body and the second tube body 20, after being combined, form the first end face 101 and the second end face 102. The first through hole 12 and the second through hole 22 can be respectively provided on the first tube body 10 and the second tube body 20. For example, the first through hole 12 can penetrate from the first end face 101 to the first sidewall of the first groove 11; the second through hole 22 can penetrate from the first end face 101 to the first sidewall of the second groove 21. The fuse tube body is made of engineering plastic, such as PA66, PA66 / PA6T, PPS, etc. The fuse tube body is provided with a sand-filling hole 23 communicating with the internal closed cavity. The first end face 101 of the fuse tube body is provided with a first through hole 12 and a second through hole 22 for the two ends of the fusible element 30 to extend out. The first through hole 12 and the second through hole 22 also have a limiting function. After the first electrode 31 and the second electrode 32 pass through the first through hole 12 and the second through hole 22 respectively, the portion of the melt 30 connected to the first electrode 31 and the second electrode 32 abuts against the groove wall around the first through hole 12 and the second through hole 22, thereby limiting the portion of the melt 30 other than the first electrode 31 and the second electrode 32 from passing through the first through hole 12 and the second through hole 22. A sand filling hole 23 is provided in one of the first tube 10 and the second tube 20 for filling the arc-extinguishing medium 40 into the first accommodating cavity.

[0046] Example 2

[0047] Specifically, compared to Embodiment 1, in this embodiment, the connecting seam when the first tube 10 and the second tube 20 are combined is located in the second direction, that is, the two transversely divided tube halves are combined to form the fuse tube body. A first groove 11 is formed inward in the first direction in the first tube 10, and a second groove 21 is formed inward in the second tube 20 in the first direction.

[0048] Furthermore, the first end face is disposed on the first tube body 10, and the second end face is disposed on the second tube body 20. Specifically, the first end face can be the outer wall of the bottom of the first groove 11, and the second end face can be the outer wall of the bottom of the second groove 21. The first through hole 12 and the second through hole 22 on the first end face respectively pass through the first electrode 31 and the second electrode 32, which allows the vertical fuse to be connected to the circuit in an upright manner with one end downward. Compared with other fuses of the same size, the lateral projection area in the circuit is smaller, and the tube body extends in the longitudinal direction, improving the utilization rate of the longitudinal space.

[0049] Example 3

[0050] For details, please refer to Figure 5Compared to Embodiment 2, the fuse tube body is formed by combining a first tube body 10 and a second tube body 20. The second tube body 20 is provided with a second groove 21, and the first tube body 10 is a cover plate adapted to the second groove 21. When the first tube body 10 and the second tube body 20 are combined, the cover plate covers the second groove 21 to form the first receiving cavity.

[0051] In a specific implementation, the second tube 20 can be a cylinder or a polygonal prism, with one end closed and the other end recessed inward to form a second groove 21. Simultaneously, the first tube 10 is shaped like a cover plate, which is placed over the second groove 21 to form a fuse tube. The size of the cover plate can be larger or smaller than the opening of the second groove 21. The molten material 30 is accommodated in the second groove 21, and a first through hole 12 and a second through hole 22 are provided on the cover plate. The first electrode 31 and the second electrode 32 of the molten material 30 pass through the first through hole 12 and the second through hole 22, respectively. After installation, it is also ultrasonically welded to the fuse tube. Alternatively, it can be made of silicone rubber, and after tightening, the outer side is fixed with silicone sealant or similar materials.

[0052] For Embodiments 1, 2 and 3, the fuse in this application further includes at least one first fixing member 50, which surrounds the fuse tube body.

[0053] In a specific implementation, the first fixing member 50 can be a reinforcing hoop, which is sleeved on the fuse tube body and can tighten the first tube body 10 and the second tube body 20. The reinforcing hoop can be made of hard metal, and the specific material can be selected as needed, without limitation here. The first fixing member 50 can be a ring, which is directly pressed into both ends of the insulating tube body to tighten the first tube body 10 and the second tube body 20. Alternatively, the first fixing member 50 can be initially set as a sheet and then directly wound into a ring on the insulating tube body to prevent the reinforcing hoop from failing to tighten due to material manufacturing tolerances.

[0054] In one implementation, for Embodiment 1 and Embodiment 2, the first fastener 50 surrounds the fuse tube body around the plane of the second direction to clamp the first tube body 10 and the second tube body 20.

[0055] In another implementation, the first fastener 50 surrounds the joint between the first tube 10 and the second tube 20. The first circumference of the inner ring of the first fastener 50 is less than the second circumference of the first tube 10 and the second tube 20. The second circumference refers to the circumference of the position where the first tube 10 and the second tube 20 are surrounded by the first fastener 50.

[0056] In specific implementations, for Embodiment 1 and Embodiment 2, the first fixing member 50 can be looped around the connecting seam to tighten the first pipe body 10 and the second pipe body 20.

[0057] In another implementation, for embodiment three, the first fastener 50 may be wrapped around the fuse tube in a first direction to secure the first tube 10 (i.e., the cover plate) to the second groove 21 of the second tube 20.

[0058] It can be seen that by clamping the first tube 10 and the second tube 20 together with the first fastener 50, the bonding strength between the first tube 10 and the second tube 20 is enhanced, making it difficult for the first tube 10 and the second tube 20 to separate, thereby improving the bonding stability between the first tube 10 and the second tube 20 and thus improving the reliability of the fuse.

[0059] In one possible embodiment, in order for the first fastener 50 to provide sufficient binding force for the first tube 10 and the second tube 20, the inner ring of the first fastener 50 is smaller than the size of the fuse tube. This improves the bonding strength between the first tube 10 and the second tube 20.

[0060] In addition, when the first fixing member 50 is wrapped around the fuse tube, it can also be used to cover the sand filling hole 23 to prevent the arc extinguishing material filled inside the insulating tube from leaking out.

[0061] In one possible embodiment, the first fixing member 50 is provided with at least one second fixing member, and the fuse tube is provided with at least one first mating part adapted to the at least one second fixing member; the first mating part cooperates with the second fixing member, so that the first fixing member 50 is fixed on the fuse tube.

[0062] In specific implementation, the second fixing member can be a protrusion, a groove, or a through hole, and the first mating part can be a groove, a through hole, or a protrusion. When the second fixing member is a protrusion, the first mating part can be a matching groove or a through hole. When the second fixing member is a groove or a through hole, the first mating part can be a matching protrusion. No specific limitation is made here.

[0063] When the first fixing member 50 is wrapped around the fuse tube body, the first fixing member 50 is fixed to the fuse tube body by the second fixing member engaging with the first mating part, which further increases the binding force of the first fixing member 50 on the fuse tube body, thereby further enhancing the bonding strength between the first tube body 10 and the second tube body 20, making it difficult for the first tube body 10 and the second tube body 20 to separate, improving the bonding stability of the first tube body 10 and the second tube body 20, and thus improving the reliability of the fuse.

[0064] In one possible embodiment, the second fixing member is a protrusion with a movable buckle. When the movable buckle engages with the first mating part, the movable buckle engages with the first mating part, thereby fixing the second fixing member to the fuse tube body.

[0065] In a specific implementation, when the second fixing member is a protrusion, a movable buckle can be provided on the protrusion. When the second fixing member is inserted into the first mating part, the movable buckle pops out and engages with the first mating part to enhance the bonding strength between the first fixing member 50 and the first mating part.

[0066] In one possible embodiment, the first fastener 50 includes a plurality of sub-fasteners that cooperate to surround the fuse tube body.

[0067] In practice, the number of sub-fixing components can be determined as needed. Each sub-fixing component can be combined with an adjacent sub-fixing component to form the first fixing component 50. Specifically, the combination of each sub-fixing component can be welding, bonding, or other combination methods, which are not limited here.

[0068] Specifically, in this embodiment, the plurality of sub-fixing members include a plurality of third fixing members, which are distributed on the plurality of sub-fixing members. The first tube body 10 is provided with a plurality of second mating parts. The plurality of third fixing members and the plurality of second mating parts are mated in a one-to-one correspondence, so that the first fixing member is fixed around the first tube body 10.

[0069] In a specific implementation, at least one third fastener can be provided on each sub-fastener. The third fastener can be a protrusion, a groove, or a through hole, and the second mating part can be a groove, a through hole, or a protrusion. When the third fastener is a protrusion, the second mating part can be a matching groove or a through hole. When the third fastener is a groove or a through hole, the second mating part can be a matching protrusion. No specific limitation is made here.

[0070] When the first fixing member 50 surrounds the fuse tube body, each sub-fixing member is fixed to the fuse tube body by the engagement of each third fixing member with the second mating part, which further increases the binding force of the first fixing member 50 on the fuse tube body, thereby further enhancing the bonding strength between the first tube body 10 and the second tube body 20, making it difficult for the first tube body 10 and the second tube body 20 to separate, improving the bonding stability of the first tube body 10 and the second tube body 20, and thus improving the reliability of the fuse.

[0071] In one possible embodiment, please refer to Figure 6The inner surface of the fuse tube can be adhered with a layer of insulating pad 60 such as silicone rubber or red steel paper to buffer the impact of the explosive pressure generated by the breaking of the fusible element 30 on the fuse tube, and to isolate the erosion effect of the high temperature generated by the melting of the fusible element 30 on the fuse tube, thereby improving the upper limit of the product's breaking capacity.

[0072] Furthermore, the first fusing portion 34 and the second fusing portion 35 of the melt 30 may be selectively treated with processes such as tinning or adhesive dispensing to improve the consistency of fusing at low multiples and the breaking capacity of high currents, without limitation.

[0073] Furthermore, the arc-extinguishing medium 40 can be filled into the fuse tube through the sand filling port by vibration filling, or the colloidal arc-extinguishing material can be sucked into the fuse tube through the sand filling port by vacuum negative pressure.

[0074] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can easily conceive of variations or substitutions without departing from the spirit and scope of this application, and can make various alterations and modifications, including combinations of the different functions and implementation steps described above, as well as software and hardware implementation methods, all of which are within the protection scope of this application.

Claims

1. A vertical fuse, characterized by The fuse includes a fuse tube and a fuse element, a first accommodating cavity is arranged in the fuse, a first end surface of the fuse tube is provided with a first through hole and a second through hole, a first end surface of the fuse element passes through the first through hole to form a first electrode, and a second end surface of the fuse element passes through the second through hole to form a second electrode; A maximum diameter of the first end surface of the fuse tube and a maximum diameter of a second end surface of the fuse tube are both smaller than a length of the fuse tube in a first direction, the first end surface is parallel to the second end surface, and the first direction is a direction from the first end surface to the second end surface or from the second end surface to the first end surface; An arc extinguishing medium is filled in the first accommodating cavity, and the arc extinguishing medium wraps the fuse element.

2. The vertical fuse of claim 1, wherein The fuse tube includes a first tube and a second tube, the first tube is provided with a first groove, and the second tube is provided with a second groove; When the first tube and the second tube are combined, the first groove and the second groove are combined to form the first accommodating cavity.

3. The vertical fuse of claim 1, wherein, The fuse tube is formed by combining a first tube and a second tube, the second tube is provided with a second groove, and the first tube is a cover plate matched with the second groove; When the first tube and the second tube are combined, the cover plate covers the second groove to form the first accommodating cavity.

4. Vertical fuse according to claim 2 or 3, characterized in that The first end surface is arranged on the first tube, the second end surface is arranged on the second tube, or The first tube and the second tube are combined to form the first end surface and the second end surface.

5. The vertical fuse of claim 4, wherein, The fuse further includes at least one first fixing member, the at least one first fixing member surrounds the fuse tube, a first circumference of an inner ring of the first fixing member is smaller than a second circumference of the first tube and the second tube, and the second circumference refers to a circumference of a position where the first tube and the second tube are surrounded by the first fixing member, or The fuse further includes a first fixing member, the first fixing member surrounds a connecting seam of the first tube and the second tube, a first circumference of an inner ring of the first fixing member is smaller than a second circumference of the first tube and the second tube, and the second circumference refers to a circumference of a position where the first tube and the second tube are surrounded by the first fixing member.

6. The vertical fuse of claim 5, wherein, The first fixing member is provided with at least one second fixing member, and the fuse tube is provided with at least one first matching part matched with the at least one second fixing member; The first matching part is matched with the second fixing member, so that the first fixing member is fixed on the fuse tube.

7. The vertical fuse of claim 6, wherein, The second fixing member is a protruding part, the protruding part is provided with a movable buckle, and when the movable buckle is combined with the first matching part, the movable buckle is combined with the first matching part, so that the second fixing member is fixed on the fuse tube.

8. The vertical fuse of claim 5, wherein, The first fixing member includes a plurality of sub-fixing members, and the plurality of sub-fixing members are matched to surround the fuse tube.

9. The vertical fuse of claim 8, wherein, The plurality of sub-fixing members includes a plurality of third fixing members, and the plurality of third fixing members are distributed on the plurality of sub-fixing members; the first pipe body is provided with a plurality of second matching parts; The plurality of third fixing members correspond to the plurality of second matching parts one by one, so that the first fixing member is fixed around the first pipe body.

10. The vertical fuse of claim 1, wherein, The melt is U-shaped, and two straight edges of the U-shaped melt are respectively provided with a first fuse part and a second fuse part; the first fuse part is provided with a plurality of first hollow parts; and the second fuse part is provided with a plurality of second hollow parts. The first hollow part includes at least two adjacent third through holes, and the second hollow part includes at least two adjacent fourth through holes.

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