Fuse box

Abstract

The invention relates to a fuse box, and relates to the technical field of electrical protection, and the fuse box comprises a fuse tube, two fixed sleeves which are oppositely clamped and fixed, and two groups of wiring assemblies which are used for connecting an external cable and the fuse tube, and the interiors of end openings, which are close to each other, of the two fixed sleeves are installation cavities for the insertion of the fuse tube. Limiting cavities allowing the wiring assembly to be installed in are formed in openings of the ends, away from each other, of the two fixing sleeves, and the installation cavities communicate with the limiting cavities. In the assembling process of the fuse box, the wiring assembly is connected with the corresponding external cable in advance, then the wiring assembly is fixedly inserted into the limiting cavity in the corresponding fixing sleeve, and then one end of the fuse tube is inserted into the mounting cavity of one fixing sleeve. And the inner end part of the fuse tube is connected with the wiring assembly in the limiting cavity, and finally the two fixing sleeves are inserted and fixed, so that screws do not need to be additionally used for fastening in the process, and the assembly efficiency of the fuse box is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical protection, and in particular to a fuse box. Background Art

[0002] With the booming development and widespread popularity of electric technology, electric vehicles have become an indispensable green means of travel in modern society. However, the surge in the use of electric vehicles has also gradually exposed the safety issues of their electrical systems, which have become a technical challenge that needs to be solved urgently. Especially in core links such as charging circuits, ACC (Accessory Control Circuit) and low-current discharge protection, once the electrical system encounters abnormal current or short circuit, it will directly threaten the safety of the vehicle and the user, and may even cause catastrophic consequences such as fire and explosion.

[0003] In order to effectively deal with this safety hazard, the fuse box, as a key component of electrical protection, plays a vital role in the electrical system of the battery vehicle. In scenarios such as ACC circuit, charging circuit and low-current discharge protection, the fuse box can quickly respond to circuit abnormalities and cut off the faulty circuit by blowing the fuse, thereby avoiding the expansion of the accident.

[0004] However, in traditional technology, the design of fuse boxes used in electric vehicles often has the problem of low assembly efficiency. Specifically, the assembly process between the shell and the shell cover, the fuse holder and the shell, and the fuse and the fuse holder is complicated and relies on fasteners such as screws for fixed connection. This not only requires operators to use specific tools for fastening operations, but also to ensure that the screw holes are aligned correctly, which greatly increases the time cost and operation difficulty of the assembly process, affecting the overall production efficiency, and there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide a fuse box to solve the problem of low assembly efficiency of the fuse box in the above-mentioned related art.

[0006] A fuse box provided in this application adopts the following technical solution: A fuse box comprises a fuse tube, two relatively clamped fixed sleeves, and two groups of wiring assemblies for connecting external cables and the fuse tube, wherein the end openings of the two fixed sleeves close to each other are installation cavities for inserting the fuse tube, and the end openings of the two fixed sleeves far away from each other are limit cavities for installing the wiring assemblies, and the installation cavities and the limit cavities are connected.

[0007] By adopting the above technical solution, during the assembly process of the fuse box, the wiring component is pre-connected to the corresponding external wiring cable, and then the wiring component is fixedly inserted into the limiting cavity within the corresponding fixed sleeve. Then, one end of the fuse tube is inserted into the installation cavity of one of the fixed sleeves, and the inner end portion of the fuse tube is connected to the wiring component located within the limiting cavity. Finally, the two fixed sleeves are plugged and fixed, and at the same time, the outer end portion of the fuse tube is inserted into the other fixed sleeve and connected to the other wiring component, thus realizing the assembly and application of the fuse box. In this process, no additional screws are required for fastening, thereby improving the assembly efficiency of the fuse box.

[0008] Optionally, fixed convex rings are fixedly provided on the outer peripheries of the mutually approaching end portions of the two fixed sleeves. A plurality of positioning insertion plates are evenly distributed on the side surface of the fixed convex ring close to the opening of the fixed sleeve. Positioning slots are formed between adjacent positioning insertion plates on the outer periphery of the fixed convex ring, and the plurality of positioning slots are evenly distributed around the axis of the fixed sleeve; trapezoidal protrusions are fixedly provided on the inner walls of the positioning slots, and fixing through slots are formed on the positioning insertion plates; after the two fixed sleeves are rotated in a staggered manner, the positioning insertion plate on one of the fixed sleeves is inserted into the positioning slot on the other, and the trapezoidal protrusion on this positioning slot is inserted into the fixing through slot on this positioning insertion plate.

[0009] By adopting the above technical solution, during the clamping process of the two fixed sleeves, after the two fixed sleeves are rotated in a staggered manner, the positioning insertion plate on one of the fixed sleeves is inserted into the positioning slot on the other, and the trapezoidal protrusion on this positioning slot is inserted into the fixing through slot on this positioning insertion plate along its inclined surface, so that the two fixed sleeves are clamped and fixed to each other. And because the positioning insertion plates and the positioning slots are evenly distributed, the clamping of the two fixed sleeves is tighter and more firm.

[0010] Optionally, the opposite side edges of the trapezoidal protrusion are guiding arc surfaces, and the arc length corresponding to the positioning slot is not less than twice the width of the positioning insertion plate; the positioning insertion plate on one fixed sleeve can be inserted into the positioning slot on the other fixed sleeve and rotated around the axis of the fixed sleeve.

[0011] By adopting the above technical solution, after the two fixed sleeves are plugged into each other, the staff can hold the two fixed sleeves with both hands and rotate them in opposite directions, so that the trapezoidal protrusion stuck in the fixing through slot slides out of the original fixing through slot along the guiding arc surface, that is, the two clamped fixed sleeves can be quickly unlocked, improving the unlocking efficiency after the two fixed sleeves are plugged.

[0012] Optionally, limiting convex strips for limiting the fuse tube are fixedly provided on the inner wall of the installation cavity, and a limiting snap ring is fixedly provided around the axis of the fixed sleeve on the inner wall of the limiting cavity; the mutually approaching side surfaces of the limiting convex strips and the limiting snap ring jointly limit and fix the wiring component located within the limiting cavity.

[0013] By adopting the above technical solution, due to the arrangement of the limiting rib, the limiting of the fuse tube inserted into the installation cavity is realized, and the inner side surface of the limiting rib is in tight contact with the outer peripheral surface of the fuse tube, so as to improve the installation stability of the fuse tube in the installation cavity; at the same time, the limiting rib and the limiting snap ring are cooperatively arranged to realize the limiting and fixing of the wiring assembly in the limiting cavity.

[0014] Optionally, the wiring assembly includes a plugging portion connected to the end of the fuse tube, a connecting portion connected to the external wiring cable, and a baffle for connecting the two; a plurality of locking buckles are fixedly arranged on the outer periphery of the plugging portion close to the connecting portion, the plugging portion is fixedly clamped between the limiting snap ring and the limiting rib, and the locking buckles can be in contact with the side surface of the limiting snap ring facing the limiting rib.

[0015] By adopting the above technical solution, when the plugging portion is fixedly clamped between the limiting snap ring and the limiting rib, the side edge of the plugging portion far from the connecting portion is in contact with one side of the limiting rib, and the locking buckles can be in contact with the side surface of the limiting snap ring facing the limiting rib, so as to realize the clamping and limiting of the plugging portion.

[0016] Optionally, the plugging portion and the connecting portion are arranged in a staggered manner, and the side surface of the baffle facing the plugging portion can be in contact with the end of the fuse tube inserted into the plugging portion.

[0017] By adopting the above technical solution, when the fuse tube is inserted into the cavity in the plugging portion, at this time, the side surface of the baffle facing the plugging portion can be in tight contact with the end of the fuse tube in the plugging portion, so as to realize the further limiting and fixing of the fuse tube and reduce the possibility of the fuse tube being loose in installation.

[0018] Optionally, bending plates are symmetrically and fixedly arranged on the connecting portion, and a plurality of abutting ribs are fixedly arranged on the side surfaces of the two bending plates close to each other.

[0019] By adopting the above technical solution, due to the arrangement of the bending plates and the abutting ribs on the bending plates, when the external wiring cable is connected to the connecting portion, the insulating skin at the end of the cable is peeled off in advance, and then the bare core wire is placed between the two bending plates, and then the bending plates are bent and press-fitted and fixed outside the bare core wire by using tools, so that the abutting ribs are in tight contact with the bare core wire.

[0020] Optionally, a sealing sleeve installed on the outer periphery of the external wiring cable is arranged in the limiting cavity, and a plurality of waterproof convex rings in tight contact with the inner wall of the limiting cavity are fixedly arranged on the outer periphery of the sealing sleeve; a connecting convex ring is fixedly arranged on the side surface of the sealing sleeve facing the installation cavity, a connecting ring groove is formed on the outer periphery of the connecting convex ring, and a connecting foot for connecting the sealing sleeve is fixedly arranged on the side surface of the connecting portion far from the plugging portion, and the connecting foot is fixedly clamped in the connecting ring groove.

[0021] By adopting the above technical solution, during the assembly process of the fuse box, the sealing sleeve is pre-installed on the outer periphery of the external connecting cable, and then the insulating skin at the end of the external connecting cable passing through the sealing sleeve is broken and crimped and fixed to the connecting part. Then, the plugging part is installed inside the limiting cavity, and at the same time, the waterproof convex ring on the sealing sleeve is tightly abutted against the inner wall of the limiting cavity, thereby improving its waterproof performance. And the two connecting feet are bent and fixedly clamped in the connecting ring groove, thereby realizing the installation and fixation of the wiring component and the sealing sleeve.

[0022] Optionally, a sealing gasket is sleeved on the outer periphery of the fuse tube, and the mutually adjacent sides of the fixed sleeve are tightly abutted against the side of the sealing gasket.

[0023] By adopting the above technical solution, due to the setting of the sealing gasket, when the fuse box is installed, the mutually adjacent sides of the fixed sleeve are respectively tightly abutted against the two sides of the sealing gasket, thereby reducing the possibility of external water vapor seeping into the interior from the connection part of the two fixed sleeves and improving its waterproof performance.

[0024] Optionally, a plurality of anti-slip convex strips are uniformly fixed on the outer periphery of the fixed sleeve.

[0025] By adopting the above technical solution, it is convenient to hold the outer peripheral surface of the fixed sleeve.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the assembly process of the fuse box, the wiring component is pre-connected to the corresponding external connecting cable, and then the wiring component is fixedly inserted into the limiting cavity inside the corresponding fixed sleeve. Then, one end of the fuse tube is inserted into the installation cavity of one of the fixed sleeves, and the inner end of the fuse tube is connected to the wiring component in the limiting cavity. Finally, the two fixed sleeves are plugged and fixed, and the assembly and application of the fuse box can be realized. In this process, no additional screws are required for fastening, thereby improving the assembly efficiency of the fuse box. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application; Figure 2 is the exploded structural schematic diagram of Embodiment 1 of the present application; Figure 3 is the sectional structural schematic diagram showing the installation and cooperation of the wiring component and the fixed sleeve in Embodiment 1 of the present application; Figure 4 is a schematic diagram of the structure of the wiring assembly embodied in Example 1 of the present application; Figure 5 It is a cross-sectional structural schematic diagram of the installation and matching of the fuse tube and the fixed sleeve in Embodiment 1 of the present application; Figure 6 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 7 This is a schematic diagram of the structure of the plug-in distribution of two fixed sleeves in Example 2 of the present application; Figure 8 It is a schematic diagram of the overall structure of Example 3 of the present application; Figure 9 It is a partial cross-sectional structural schematic diagram of the installation and coordination of the protection component embodied in Example 3 of the present application; Figure 10 It is a schematic diagram of the structure of Example 3 of the present application when two limit plates rotate in opposite directions.

[0029] In the figure, 1, fuse tube; 2, fixing sleeve; 21, installation cavity; 22, fixing convex ring; 221, positioning plug plate; 2211, fixing through groove; 222, positioning slot; 2221, trapezoidal convex block; 22211, guide arc surface; 23, limiting convex strip; 231, guiding inclined surface; 24, limiting clamp ring; 241, guiding inclined surface; 25, limiting cavity; 26, anti-slip convex strip; 3, wiring assembly; 31 , plug-in part; 311, locking buckle; 32, connecting part; 321, bending plate; 3211, abutting convex strip; 33, baffle; 34, connecting foot; 4, sealing sleeve; 41, waterproof convex ring; 42, connecting convex ring; 421, connecting ring groove; 5, sealing gasket; 6, protective component; 61, limit plate; 611, make way gap; 62, bending plate; 63, traction ring; 64, traction rod; 65, pull rod. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Embodiment 1: Reference Figure 1 and Figure 2 A fuse box comprises a fuse tube 1, two relatively clamped fixed sleeves 2, and two groups of wiring components 3 for connecting external cables and the fuse tube 1, the end openings of the two fixed sleeves 2 close to each other are installation cavities 21 for inserting the fuse tube 1, and the end openings of the two fixed sleeves 2 far from each other are limit cavities 25 for installing the wiring components 3, and the installation cavity 21 and the limit cavity 25 in the same fixed sleeve 2 are connected to each other; During the assembly process of the fuse box, the wiring component 3 is pre-connected to the corresponding external cable, and then the wiring component 3 is fixedly inserted into the limiting cavity 25 in the corresponding fixed sleeve 2. Then, one end of the fuse tube 1 is inserted into the installation cavity 21 of one of the fixed sleeves 2, and the inner end of the fuse tube 1 is connected to the wiring component 3 in the limiting cavity 25. Finally, the two fixed sleeves 2 are plugged and fixed, and at the same time, the outer end of the fuse tube 1 is inserted into the other fixed sleeve 2 and connected to the other wiring component 3, so that the assembly and application of the fuse box can be realized without the need to use additional screws for fastening.

[0032] Referring to Figure 2 and Figure 3 , on the outer peripheries of the mutually adjacent ends of the two fixed sleeves 2, fixing convex rings 22 are integrally formed. On the side surface of the fixing convex ring 22 close to the opening of the fixed sleeve 2, two positioning insertion plates 221 are evenly distributed. The positioning insertion plates 221 are integrally injection-molded with the fixing convex ring 22, and positioning slots 222 are formed between adjacent positioning insertion plates 221 on the outer periphery of the fixing convex ring 22. The two positioning slots 222 are evenly distributed around the axis of the fixed sleeve 2; On the inner wall of the positioning slot 222, a trapezoidal convex block 2221 is integrally formed, and the side edge of the positioning insertion plate 221 facing the other fixed sleeve 2 is chamfered. A fixing through groove 2211 for the trapezoidal convex block 2221 to insert is formed on the positioning insertion plate 221. When the two fixed sleeves 2 are plugged and fixed, first rotate the two fixed sleeves 2 out of position by 90 degrees, and then insert the positioning insertion plate 221 on one of the fixed sleeves 2 into the positioning slot 222 on the other along its chamfer. The trapezoidal convex block 2221 on the positioning slot 222 is inserted into the fixing through groove 2211 on the positioning insertion plate 221 along its inclined surface, so that the two fixed sleeves 2 are clamped and fixed to each other.

[0033] Referring to Figure 3 , on the inner wall of the installation cavity 21, four limiting convex strips 23 for limiting the fuse tube 1 are evenly distributed, and a guiding inclined surface 231 is provided on the side edge of the limiting convex strip 23 facing the opening of the installation cavity 21; the fuse tube 1 is inserted into the inner wall of the installation cavity 21 along the guiding inclined surface 231, and at the same time, the inner side surface of the limiting convex strip 23 abuts against the outer peripheral surface of the fuse tube 1, so as to improve the installation stability of the fuse tube 1 in the installation cavity 21.

[0034] Referring to Figure 4 , the wiring component 3 includes a plugging part 31 connected to the end of the fuse tube 1, a connecting part 32 connected to the external cable, and a baffle 33 for connecting the two. Among them, the plugging part 31, the connecting part 32 and the baffle 33 are integrally processed; on the connecting part 32, two bending plates 321 are symmetrically fixed, and a plurality of abutting convex strips 3211 are integrally formed on the mutually adjacent side surfaces of the two bending plates 321; When connecting the external cable to the connecting part 32, first strip the insulating skin at the end of the cable, then place the exposed core wire between the two bending plates 321, and then use a tool to bend the bending plates 321 and press-fix them outside the exposed core wire, so that the abutting ridges 3211 are tightly abutted against the exposed core wire.

[0035] Refer to Figure 3 and Figure 4 On the outer periphery of the insertion part 31 close to the connecting part 32, two locking buckles 311 formed by stamping equipment are fixedly arranged. On the inner wall of the limiting cavity 25, a limiting snap ring 24 is integrally formed around the axis of the fixed sleeve 2, and a guiding inclined surface 241 is arranged on the side edge of the limiting snap ring 24 facing the opening of the limiting cavity 25; among them, the mutually approaching sides of the limiting ridge 23 and the limiting snap ring 24 jointly limit and fix the insertion part 31 located in the limiting cavity 25. When the insertion part 31 is fixedly clamped between the limiting snap ring 24 and the limiting ridge 23, the side edge of the insertion part 31 far from the connecting part 32 abuts against one side of the limiting ridge 23, and the locking buckle 311 can abut against the side of the limiting snap ring 24 facing the limiting ridge 23, so as to realize the limiting and fixing of the insertion part 31.

[0036] Refer to Figure 4 and Figure 5 The insertion part 31 and the connecting part 32 are arranged in a staggered manner. When the fuse tube 1 is inserted into the cavity in the insertion part 31, at this time, the side of the baffle 33 facing the insertion part 31 can tightly abut against the end of the fuse tube 1 in the insertion part 31, so as to realize the further limiting and fixing of the fuse tube 1 and reduce the possibility of the fuse tube 1 being loosely installed.

[0037] Refer to Figure 3 and Figure 4 In the limiting cavity 25, a sealing sleeve 4 made of rubber is arranged. When in use, the sealing sleeve 4 is sleeved on the outer periphery of the external cable. Among them, three waterproof convex rings 41 that abut against the inner wall of the limiting cavity 25 are integrally formed on the outer periphery of the sealing sleeve 4, and a connecting convex ring 42 is integrally formed on the side of the sealing sleeve 4 facing the installation cavity 21. A connecting ring groove 421 is formed on the outer periphery of the connecting convex ring 42. On the side of the connecting part 32 far from the insertion part 31, two connecting feet 34 for connecting the sealing sleeve 4 are integrally formed. After the two connecting feet 34 are bent, they can be fixedly clamped in the connecting ring groove 421, so as to realize the installation and fixation of the wiring component 3 and the sealing sleeve 4.

[0038] Refer to Figure 5 A sealing gasket 5 made of rubber is sleeved on the outer periphery of the fuse tube 1. After the fuse box is installed, the mutually approaching sides of the fixed sleeves 2 respectively abut tightly against the two side surfaces of the sealing gasket 5, so as to improve its waterproof performance.

[0039] The implementation principle of the embodiments of this application is as follows: During the assembly process of the fuse box, the sealing sleeve 4 is pre-installed on the outer periphery of the external wiring cable. Then, the insulating skin at the end of the external wiring cable passing through the sealing sleeve 4 is broken and crimped and fixed to the connecting part 32. Then, the plugging part 31 is installed inside the limiting cavity 25, and at the same time, the waterproof convex ring 41 on the sealing sleeve 4 is pressed tightly against the inner wall of the limiting cavity 25; The sealing gasket 5 is sleeved on the outer periphery of the fuse tube 1. One end of the fuse tube 1 is inserted into the installation cavity 21 of one of the fixed sleeves 2, and the inner end part of the fuse tube 1 is inserted into the inner cavity of the plugging part 31. Then, the two fixed sleeves 2 are plugged and fixed. At the same time, the outer end part of the fuse tube 1 is inserted into the other fixed sleeve 2 and inserted into the inner cavity of the corresponding plugging part 31, so as to realize the installation and fixation of the fuse box.

[0040] Embodiment 2: Referring to Figure 6 and Figure 7 In this embodiment of the application, the difference from Embodiment 1 is that a plurality of anti-slip convex strips 26 are uniformly fixed on the outer periphery of the fixed sleeve 2. The anti-slip convex strips 26 are integrally processed with the fixed sleeve 2, and the length direction of the anti-slip convex strips 26 is parallel to the axis direction of the fixed sleeve 2; The unlocking methods of the two fixed sleeves 2 are different; the arc length corresponding to the cross-section of the positioning slot 222 on the fixed convex ring 22 is longer. Specifically, the arc length corresponding to the positioning slot 222 is not less than twice the width of the positioning plate 221, and the opposite two side edges of the trapezoidal convex block 2221 are guiding arc surfaces 22211; The positioning plate 221 on one of the fixed sleeves 2 can be inserted into the positioning slot 222 on the other fixed sleeve 2 and rotate around the axis of the fixed sleeve 2, and the trapezoidal convex block 2221 stuck in the fixed through groove 2211 slides out of the original fixed through groove 2211 along the guiding arc surface 22211; When the two fixed sleeves 2 are plugged into each other, the staff can hold the two fixed sleeves 2 with both hands and rotate them in the opposite direction (along the two thick arrows in the figure), and the two clamped fixed sleeves 2 can be quickly unlocked.

[0041] Embodiment 3: Referring to Figure 8 , Figure 9 and Figure 10, the difference between the embodiment of the present application and the embodiment 1 is that the end openings of the two fixed sleeves 2 that are away from each other are both provided with a protective component 6, wherein the protective component 6 includes two limit plates 61 symmetrically arranged at the end openings of the fixed sleeve 2, and the side edges of the two limit plates 61 that are close to each other are provided with a clearance notch 611 for the cable to be inserted, and the side edges of the two limit plates 61 that are away from each other are fixed with a bending plate 62 bent toward the axis of the fixed sleeve 2; the bending plate 62 is in contact with the outer peripheral surface of the fixed sleeve 2, and the side edge of the bending plate 62 away from the fixed sleeve 2 is hinged to the outer peripheral surface of the fixed sleeve 2; A traction ring 63 is sleeved on the outer periphery of the fixed sleeve 2, wherein the traction ring 63 can slide back and forth along the axis of the fixed sleeve 2, and two traction rods 64 are symmetrically hinged on the side edge of the traction ring 63 facing the bending plate 62, wherein the other end of the traction rod 64 is hinged with a pull rod 65, and the other end of the pull rod 65 is hinged to the side edge of the bending plate 62 away from the fixed sleeve 2; by sliding the traction ring 63, the traction rod 64 can be pulled, thereby causing the bending plate 62 to rotate, and finally causing the two limit plates 61 to rotate toward or away from each other.

[0042] When the two fixed sleeves 2 are clamped and fixed, the positioning plate 221 on the other fixed sleeve 2 passes through the positioning slot 222 and extends to the outer side surface of the fixed sleeve 2 and abuts against one side of the traction ring 63. In this state, the two limiting plates 61 abut against each other on the sides close to each other, that is, the two limiting plates 61 limit the outer side opening of the fixed sleeve 2 in this state, preventing the sealing sleeve 4 and the wiring assembly 3 from falling out from the outer opening when the two fixed sleeves 2 are clamped, thereby improving their protection and dustproof performance.

[0043] The implementation principle of the embodiment of the present application is: When the two fixed sleeves 2 are not locked, the user can move the traction ring 63 toward the fixed convex ring 22, thereby rotating the two limit plates 61 in opposite directions, and then the sealing sleeve 4 and the wiring assembly 3 can be installed into the fixed sleeve 2 from the opening; When the two fixed sleeves 2 are connected, the positioning plate 221 on the other fixed sleeve 2 passes through the positioning slot 222 and extends to the outer side of the fixed sleeve 2 and abuts against one side of the traction ring 63. In this state, the sides of the two limit plates 61 that are close to each other abut against each other, thereby blocking the openings of the two fixed sleeves 2 that are away from each other.

[0044] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second", "third" and similar words used in the text of this application do not denote any order, quantity or importance, but are only used to distinguish different components. Similar words such as "a" or "an" do not denote a quantity limitation either, but mean that there is at least one. Words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0045] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A fuse box, characterized in that: The invention comprises a fuse tube (1), two relatively clamped fixed sleeves (2), and two groups of wiring assemblies (3) for connecting external cables and the fuse tube (1); the end openings of the two fixed sleeves (2) close to each other are provided with an installation cavity (21) for inserting the fuse tube (1); the end openings of the two fixed sleeves (2) far from each other are provided with a limiting cavity (25) for installing the wiring assembly (3); and the installation cavity (21) and the limiting cavity (25) are connected.

2. A fuse box according to claim 1, characterized in that: A fixing convex ring (22) is fixedly provided on the outer circumference of the ends of the two fixing sleeves (2) close to each other, a plurality of positioning plug plates (221) are evenly distributed on the side of the fixing convex ring (22) close to the opening of the fixing sleeve (2), and a positioning slot (222) is opened on the outer circumference of the fixing convex ring (22) between adjacent positioning plug plates (221), and the plurality of positioning slots (222) are evenly distributed around the axis of the fixing sleeve (2); A trapezoidal protrusion (2221) is fixedly provided on the inner wall of the positioning slot (222), and a fixed through slot (2211) is provided on the positioning plug plate (221); after the two fixed sleeves (2) rotate in an offset manner, the positioning plug plate (221) on one of the fixed sleeves (2) is inserted into the positioning slot (222) on the other, and the trapezoidal protrusion (2221) on the positioning slot (222) is inserted into the fixed through slot (2211) on the positioning plug plate (221).

3. A fuse box according to claim 2, characterized in that: The opposite side edges of the trapezoidal protrusion (2221) are guide arc surfaces (22211), and the arc length corresponding to the positioning slot (222) is not less than twice the width of the positioning plug plate (221); the positioning plug plate (221) on one fixed sleeve (2) can be inserted into the positioning slot (222) on another fixed sleeve (2) and rotate around the axis of the fixed sleeve (2).

4. A fuse box according to claim 1, characterized in that: A limiting convex strip (23) for limiting the position of the fuse tube (1) is fixedly provided on the inner wall of the installation cavity (21), and a limiting clamping ring (24) is fixedly provided on the inner wall of the limiting cavity (25) around the axis of the fixing sleeve (2); the side surfaces of the limiting convex strip (23) and the limiting clamping ring (24) close to each other jointly limit and fix the wiring assembly (3) in the limiting cavity (25).

5. A fuse box according to claim 3, characterized in that: The wiring assembly (3) comprises a plug-in portion (31) connected to the end of the fuse tube (1), a connecting portion (32) connected to an external cable, and a baffle (33) for connecting the two. A plurality of locking buckles (311) are fixedly provided on the outer periphery of the plug-in portion (31) close to the connecting portion (32); the plug-in portion (31) is fixedly inserted between the limiting buckle (24) and the limiting convex strip (23); and the locking buckles (311) can abut against the side of the limiting buckle (24) facing the limiting convex strip (23).

6. A fuse box according to claim 5, characterized in that: The plug-in portion (31) and the connecting portion (32) are arranged in a staggered manner, and the side of the baffle (33) facing the plug-in portion (31) can abut against the end of the fuse tube (1) inserted into the plug-in portion (31).

7. A fuse box according to claim 5, characterized in that: The connecting portion (32) is symmetrically fixed with bending plates (321), and a plurality of abutting convex strips (3211) are fixedly provided on the side surfaces of the two bending plates (321) close to each other.

8. A fuse box according to claim 5, characterized in that: The limiting cavity (25) is provided with a sealing sleeve (4) installed on the outer periphery of the external cable, and the outer periphery of the sealing sleeve (4) is fixedly provided with a plurality of waterproof convex rings (41) which are tightly pressed against the inner wall of the limiting cavity (25); A connecting protrusion (42) is fixedly provided on the side surface of the sealing sleeve (4) facing the installation cavity (21), a connecting ring groove (421) is provided on the outer periphery of the connecting protrusion (42), and a connecting foot (34) for connecting the sealing sleeve (4) is fixedly provided on the side surface of the connecting portion (32) away from the plug-in portion (31), and the connecting foot (34) is fixedly clamped in the connecting ring groove (421).

9. A fuse box according to claim 1, characterized in that: A sealing gasket (5) is sleeved on the outer periphery of the fuse tube (1), and the mutually adjacent sides of the fixing sleeve (2) are tightly pressed against the side faces of the sealing gasket (5).

10. A fuse box according to claim 1, characterized in that: A plurality of anti-slip convex strips (26) are evenly fixed on the outer periphery of the fixed sleeve (2).

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