Automobile fuse convenient to install

Abstract

The utility model discloses an automobile fuse convenient to install, and relates to the technical field of fuses, the automobile fuse convenient to install comprises an upper shell, the lower end of the upper shell is connected with a lower shell; a metal body is connected between the upper shell and the lower shell; the bottom of the mounting head is conical, when the mounting head is downwards connected with the fixing hole, downward force is generated, downward pressure is generated on the arc-shaped fixing block in the fixing hole at the same time, the spring is connected to the arc-shaped fixing block, the spring contracts into the empty groove, the arc-shaped fixing block contracts into the empty groove along with the spring, and at the moment, the mounting head is connected with the bottom of the fixing hole. An annular groove is reserved in the installation head, the two arc-shaped fixing blocks are connected with the groove through the elastic force of the spring, the installation head is fixed and clamped, and when an automobile electrical system breaks down and the fuse is doubted to be fused, a maintainer can rapidly detach the upper shell and the lower connecting shell of the fuse.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically to an easy-to-install automotive fuse. Background Technology

[0002] With the continuous advancement of automotive technology, especially the rapid development of new energy vehicles, the degree of electrification in automobiles is increasing, making circuit systems more complex and demanding higher requirements for circuit protection. Various electronic devices in automobiles, such as battery management systems, drive motor control systems, and on-board chargers, all require reliable circuit protection to ensure their safety and stability during normal operation. At the same time, the widespread use of 800V power systems increases the risk of short circuits between battery modules, thus placing more stringent demands on the performance of overcurrent protection devices.

[0003] Chinese Patent Publication No. CN 201556591 discloses a U-shaped fuse, including an upper shell, a lower shell, and a metal body. The metal body is integrally formed into a long strip shape, including mounting sections at both ends and a fusing section in the middle. The mounting sections have structures for fastening to the protected object (such as an electric vehicle control circuit). The fusing section is divided into two branches along the length of the metal body, with equal cross-sectional areas for current flow, thus dividing the fusing section into two paths. The fusing section of the metal body is fastened within the cavity formed by the upper and lower shells. The advantages are: the fusing section and transition section are protected within the enclosed cavity formed by the outer and inner shells; the fusing section is divided into two branches, improving the buffering capacity of this invention; it has good electrical characteristics; the upper and lower shells are preferably made of transparent insulating plastic, allowing for easy inspection of the fusing section from the outside, facilitating fault diagnosis.

[0004] The aforementioned fuses are very inconvenient to install and maintain. Because there is a metal body connecting the upper and lower shells, they need to be fixed with screws or bolts. Disassembly is also inconvenient, affecting work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an automotive fuse that is easy to install. By installing the metal body with the upper and lower housings, maintenance can be performed by separating the upper and lower housings. This makes disassembly and assembly convenient and improves efficiency, thereby solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An easy-to-install automotive fuse, including

[0008] An upper housing, the lower end of which is connected to a lower housing; a metal body connects the upper housing and the lower housing.

[0009] The upper housing includes an upper mounting shell, with mounting heads at each of the four corners. The bottom of each mounting head is tapered, and an annular groove is provided on the top of the mounting head.

[0010] As a further technical solution of this utility model, each of the four mounting heads is connected to four connecting holes, and the four connecting holes are arranged in pairs, each on two mounting plates, and the mounting plates are also provided with mounting holes.

[0011] As a further technical solution of this utility model, the two mounting plates are connected by a fused section, and a ring is provided on the fused section.

[0012] As a further technical solution of this utility model, the bottom of the mounting plate is provided with a lower connecting shell, and the lower connecting shell is provided with four fixing holes corresponding to the four mounting heads and four connecting holes, and the bottom of the mounting head is connected to the bottom of the fixing hole.

[0013] As a further technical solution of this utility model, the fixing hole is provided with symmetrical slots, and springs are provided symmetrically in the slots, with the other end of the springs connected to the arc-shaped fixing block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, when installing the fuse, the connecting holes on the mounting plate are first aligned with the fixing holes on the lower connecting shell, and then the mounting head on the upper mounting shell is connected to the fixing holes. The upper mounting shell, the mounting plate and the lower connecting shell are then connected, making installation convenient and the structure simple.

[0016] 2. In this utility model, the bottom of the mounting head is tapered. When it connects downward to the fixing hole, it generates a downward force. The downward pressure simultaneously exerts force on the arc-shaped fixing block inside the fixing hole. A spring is connected to the arc-shaped fixing block. When the spring contracts into the slot, the arc-shaped fixing block contracts into the slot as well. At this time, the mounting head connects to the bottom of the fixing hole. An annular groove is left on the mounting head. The two arc-shaped fixing blocks are connected to the groove through the elastic force of the spring, which serves to fix and clamp the mounting head. When a fault occurs in the automotive electrical system and a fuse is suspected to be blown, the repair personnel can quickly disassemble the upper housing and lower connecting housing of the fuse to directly check the condition of the internal mounting plate. Compared with the traditional one-piece housing, which requires tools for a long time to disassemble, the quick-release structure allows the repair personnel to determine whether the fuse section is damaged in a short time, which can significantly shorten the fault diagnosis time.

[0017] 3. In this invention, a circular ring is provided on the fuse segment. The circular ring structure of the fuse segment allows for more precise control of the fusing current. When the current is overloaded, a specific part of the ring will reach the melting point first, achieving precise fusing. At the same time, the circular shape increases the surface area of ​​the fuse segment, resulting in a larger contact area with the surrounding air or arc-extinguishing medium and faster heat dissipation. When the current is overloaded, the generated heat can rapidly raise the temperature of the fuse segment, accelerating the fusing process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This utility model Figure 1 A bottom view.

[0020] Figure 3 This utility model Figure 1 A schematic diagram of the split structure.

[0021] Figure 4 This utility model Figure 1 A bottom view.

[0022] Figure 5 This utility model Figure 2 A schematic diagram of the split structure.

[0023] Figure 6 This utility model Figure 3 A magnified view of a portion of the image.

[0024] In the diagram: 1-Upper shell, 2-Metal body, 3-Lower shell;

[0025] 11-Upper mounting shell, 12-Mounting head, 13-Groove;

[0026] 21-Mounting plate, 22-Mounting hole, 23-Connecting hole, 24-Fuse section, 25-Ring;

[0027] 31-Lower connecting shell, 32-Fixing hole, 33-Empty groove, 34-Spring, 35-Arc-shaped fixing block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6In this embodiment of the present invention, an easy-to-install automotive fuse includes an upper housing 1, the lower end of which is connected to a lower housing 3; a metal body 2 is connected between the upper housing 1 and the lower housing 3.

[0030] The upper housing 1 includes an upper mounting shell 11, and each of the four corners of the upper mounting shell 11 is provided with a mounting head 12. The bottom of the mounting head 12 is tapered, and an annular groove 13 is left on the upper part of the mounting head 12.

[0031] Each of the four mounting heads 12 is connected to four connecting holes 23. The four connecting holes 23 are arranged in pairs and are located on two mounting plates 21. The mounting plates 21 are also provided with mounting holes 22.

[0032] By adopting the above technical solution, when installing the fuse, the connecting hole 23 on the mounting plate 21 is first placed in correspondence with the fixing hole 32 on the lower connecting shell 31, and then the mounting head 12 on the upper mounting shell 11 is connected to the fixing hole 32. The upper mounting shell 11, the mounting plate 21 and the lower connecting shell 31 are connected, which is convenient for installation and has a simple structure.

[0033] In this embodiment, the two mounting plates 21 are connected by a fusible section 24, and a ring 25 is provided on the fusible section 24.

[0034] By adopting the above technical solution, a circular ring 25 is provided on the fuse section 24. The fuse section 24 with the circular ring 25 structure can more accurately control the fusing current. When the current is overloaded, a specific part of the circular ring 25 will reach the melting point first, achieving precise fusing. At the same time, the shape of the circular ring 25 increases the surface area of ​​the fuse section, resulting in a larger contact area with the surrounding air or arc-extinguishing medium and faster heat dissipation. When the current is overloaded, the heat generated can quickly raise the temperature of the fuse section 24, accelerating the fusing process.

[0035] In this embodiment, the bottom of the mounting plate 21 is provided with a lower connecting shell 31, and the lower connecting shell 31 is provided with four fixing holes 32 corresponding to the four mounting heads 12 and the four connecting holes 23, and the bottom of the mounting head 12 is connected to the bottom of the fixing hole 32.

[0036] The fixing hole 32 is symmetrically provided with a slot 33, and a spring 34 is symmetrically provided in the slot 33. The other end of the spring 34 is connected to the arc-shaped fixing block 35.

[0037] By adopting the above technical solution, the bottom of the mounting head 12 is tapered. When it connects downward to the fixing hole 32, it generates a downward force. The downward pressure also exerts a force on the arc-shaped fixing block 35 inside the fixing hole 32. A spring 34 is connected to the arc-shaped fixing block 35. The spring 34 retracts into the slot 33, and the arc-shaped fixing block 35 retracts into the slot 33 accordingly. At this time, the mounting head 12 is connected to the bottom of the fixing hole 32. An annular groove 13 is left on the mounting head 12. The two arc-shaped fixing blocks 35 are connected to the groove 13 through the elastic force of the spring 34, which plays a role in fixing and clamping the mounting head 12. When the automotive electrical system malfunctions and the fuse is suspected to be blown, the repair personnel can quickly disassemble the upper housing 1 and the lower connecting housing 31 of the fuse to directly check the status of the internal mounting plate 21. Compared with the traditional one-piece housing, which requires tools to disassemble for a long time, the quick-release structure allows the repair personnel to determine whether the fuse section 24 is damaged in a short time, which can significantly shorten the fault diagnosis time.

[0038] The working principle of this utility model is as follows: When installing the fuse, firstly, the connecting hole 23 on the mounting plate 21 is placed in correspondence with the fixing hole 32 on the lower connecting shell 31, and then the mounting head 12 on the upper mounting shell 11 is connected to the fixing hole 32. The upper mounting shell 11, the mounting plate 21 and the lower connecting shell 31 are connected, which is convenient to install and has a simple structure.

[0039] The bottom of the mounting head 12 is tapered. When it connects downward to the fixing hole 32, it generates a downward force. The downward pressure also exerts a force on the arc-shaped fixing block 35 inside the fixing hole 32. A spring 34 is connected to the arc-shaped fixing block 35. The spring 34 retracts into the slot 33, and the arc-shaped fixing block 35 retracts into the slot 33 accordingly. At this time, the mounting head 12 connects to the bottom of the fixing hole 32. The mounting head 12 has an annular groove 13. The two arc-shaped fixing blocks 35 are connected to the groove 13 through the elastic force of the spring 34, which serves to fix and clamp the mounting head 12. When the automotive electrical system malfunctions and the fuse is suspected to be blown, the repair personnel can quickly disassemble the upper housing 1 and the lower connecting housing 31 of the fuse to directly check the status of the internal mounting plate 21. Compared with the traditional one-piece housing, which requires tools to disassemble for a long time, the quick-release structure allows the repair personnel to determine whether the fuse section 24 is damaged in a short time, which can significantly shorten the fault diagnosis time.

[0040] The fusing section 24 is equipped with a circular ring 25. This ring structure allows for more precise control of the fusing current. When the current is overloaded, a specific portion of the ring 25 will reach its melting point first, achieving precise fusing. Simultaneously, the shape of the ring 25 increases the surface area of ​​the fusing section, resulting in a larger contact area with the surrounding air or arc-extinguishing medium and faster heat dissipation. When the current is overloaded, the generated heat can rapidly raise the temperature of the fusing section 24, accelerating the fusing process.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A convenient-to-install automotive fuse, characterized in that: include The upper shell (1) is connected to the lower shell (3) at its lower end; a metal body (2) is connected between the upper shell (1) and the lower shell (3). The upper housing (1) includes an upper mounting shell (11), and each of the four corners of the upper mounting shell (11) is provided with a mounting head (12). The bottom of the mounting head (12) is conical, and an annular groove (13) is left on the upper part of the mounting head (12).

2. The conveniently installed automotive fuse according to claim 1, characterized in that: The four mounting heads (12) are each connected to four connecting holes (23). The four connecting holes (23) are arranged in pairs and are located on two mounting plates (21). The mounting plates (21) are also provided with mounting holes (22).

3. The conveniently installed automotive fuse according to claim 2, characterized in that: The two mounting plates (21) are connected by a fusible section (24), and a ring (25) is provided on the fusible section (24).

4. The easy-to-install automotive fuse according to claim 3, characterized in that: The mounting plate (21) has a lower connecting shell (31) at the bottom. The lower connecting shell (31) has four fixing holes (32) corresponding to the four mounting heads (12) and the four connecting holes (23). The bottom of the mounting head (12) is connected to the bottom of the fixing hole (32).

5. The easy-to-install automotive fuse according to claim 4, characterized in that: The fixing hole (32) is symmetrically provided with a slot (33), and a spring (34) is symmetrically provided in the slot (33). The other end of the spring (34) is connected to the arc-shaped fixing block (35).

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