A fuse for charging piles

Abstract

This application relates to a fuse for charging piles, and pertains to the technical field of fuses. It includes a first housing and a second housing, with the second housing disposed on top of the first housing. Grooves are formed near both sides of the top of the first housing. A mounting plate is fixedly connected to one side of the inner wall of each groove. A snap-fit ​​assembly is provided on one side of the mounting plate, and a snap-fit ​​hole is formed on the other side of the groove. In the snap-fit ​​assembly of this application, the elasticity of the spring allows the slide cylinder to be stably snapped into the snap-fit ​​hole, ensuring the stability of the connection between the first and second housings. Simultaneously, during disassembly, simply pressing the slide cylinder to compress the spring allows it to disengage from the snap-fit ​​hole, achieving quick unlocking and further improving the convenience of housing assembly and disassembly and the reliability of the connection. By rotating the bidirectional lead screw with a knob, two sets of threaded blocks and the top clamping assembly can be moved synchronously closer or further away, thereby flexibly adjusting the distance between the two sets of clamping assemblies to accommodate fuses of different sizes.

Description

Technical Field

[0001] This application relates to fuses, and more particularly to a fuse for a charging station. Background Technology

[0002] With the rapid development of the new energy vehicle industry, charging piles, as important energy supply facilities, have increasingly prominent requirements for circuit safety protection. As a key protective component in the charging pile circuit, the fuse can quickly melt and cut off the current to avoid equipment damage when the circuit is overloaded or short-circuited. Especially in DC high voltage scenarios, the reliability and ease of maintenance of the fuse directly affect the operating efficiency and safety of the charging pile. At present, in order to adapt to the trend of miniaturization of semiconductor equipment, DC fast fuses have been widely used in the State Grid charging pile system, and their structural design and assembly process have become an important link in ensuring circuit safety.

[0003] In existing technologies, the replacement of the fuse element in a DC fast-acting fuse relies on tools such as screwdrivers. First, the screws securing the contact blade to the cover plate must be loosened with a screwdriver. Then, the screws connecting the cover plate to the porcelain insulator must be removed. After removing the fuse element, the above steps are repeated in reverse to complete the replacement. This process, involving frequent screwdriver rotation, not only increases the cumbersomeness of the operation but may also lead to uneven force, causing screw stripping or cover plate deformation, further prolonging the replacement time and reducing maintenance efficiency.

[0004] To address the issues of frequent screwdriver operations and insufficient maintenance convenience associated with fuse replacement, this application aims to provide a fuse for charging piles that achieves rapid fuse replacement through optimized structural design, eliminating the need for screwdrivers and other tools, simplifying the operation process, and improving maintenance efficiency. Utility Model Content

[0005] The purpose of this application is to provide a fuse for charging piles, which has the advantages of easy replacement and solves the problems of cumbersome replacement steps and long replacement time.

[0006] The present application provides a fuse for a charging pile, which adopts the following technical solution: it includes a first housing and a second housing. The second housing is disposed on the top of the first housing. The top of the first housing is provided with grooves near both sides. An installation plate is fixedly connected to one side of the inner wall of the two grooves. A buckle assembly is provided on one side of the installation plate. A buckle hole is provided on the other side of the groove. The buckle assembly is adapted to the buckle hole.

[0007] By adopting the above technical solution, through the cooperation of the first and second housings and the adaptation of the snap-fit ​​components and the snap-fit ​​holes, the first and second housings can be quickly disassembled and assembled without the need for tools such as screwdrivers. This facilitates quick opening of the housings for replacement and maintenance of the fuse, simplifies the operation process, and improves maintenance efficiency.

[0008] Preferably, the buckle assembly includes a column and a slide cylinder. The slide cylinder is slidably connected to one side of the column. One end of the column is fixedly connected to a spring, and the other end of the spring is fixedly connected to one side of the inner wall of the slide cylinder. The slide cylinder is snapped into a buckle hole.

[0009] By adopting the above technical solution, the elasticity of the spring in the buckle assembly enables the slide cylinder to be stably engaged in the buckle hole, ensuring the stability of the connection between the first housing and the second housing. At the same time, during disassembly, it is only necessary to press the slide cylinder to compress the spring to disengage it from the buckle hole, achieving quick unlocking, which further improves the convenience of housing disassembly and assembly and the reliability of connection.

[0010] Preferably, a mounting groove is formed at the bottom of the inner wall of the first housing. A bidirectional lead screw is mounted in the mounting groove via a rotating shaft. Threaded blocks are threaded onto the surface of the bidirectional lead screw, and there are two sets of threaded blocks. Each set of threaded blocks has a clamping assembly at its top. A knob is mounted on the shaft end of the bidirectional lead screw via the rotating shaft.

[0011] By adopting the above technical solution, the two sets of threaded blocks and the top clamping components can be moved closer or further away synchronously by rotating the two-way screw with a knob, thereby flexibly adjusting the distance between the two sets of clamping components. This can adapt to fuses of different sizes, improve the versatility of the device, and facilitate quick positioning and fixing of the fuses, simplifying the installation process of the fuses.

[0012] Preferably, the clamping assembly includes a support rod, the top of which is provided with an elastic clamping plate. The elastic clamping plate is arc-shaped and has a soft pad inside. Two sets of elastic clamping plates are provided with fusible posts.

[0013] By adopting the above technical solution, the arc-shaped elastic clamp in the clamping assembly can better fit the shape of the fuse, and its own elasticity can form a tight clamp on the fuse, ensuring the stability of the conductive connection; the soft pad can play a buffering role during the clamping process, preventing the fuse from being damaged due to excessive clamping force, and improving the protection effect of the fuse.

[0014] Preferably, the bottom of the mounting groove is provided with a sliding groove, and a slider is slidably connected in the sliding groove, the slider being fixedly connected to one side of the threaded block.

[0015] By adopting the above technical solution, the sliding groove at the bottom of the mounting slot and the slider on the threaded block can slide together to guide the movement direction of the threaded block, ensuring that the clamping component moves stably along a straight line during the adjustment process, avoiding deviation or jamming, and improving the smoothness and accuracy of the adjustment process.

[0016] Preferably, a protective shell is provided at the top of the second housing. The protective shell is made of a high-temperature resistant material. Both the protective shell and the top of the second housing have ventilation holes, and a filter assembly is provided inside the ventilation holes.

[0017] By adopting the above technical solutions, the high-temperature resistant protective shell can effectively protect the second shell from the high temperature outside the first shell. The ventilation holes can promote air circulation inside and outside the shell, achieve heat dissipation, prevent heat accumulation from affecting the performance of the device, and the filter components can block external dust from entering the shell, ensuring internal cleanliness and guaranteeing the service life of the device.

[0018] Preferably, the filter assembly includes a dustproof plate, and the inner wall of the dustproof plate is provided with a plurality of inclined plates.

[0019] By adopting the above technical solution, the dustproof plate in the filter assembly, together with multiple inclined plates, can effectively block external dust from entering the housing. At the same time, the structural design of the inclined plates can guide airflow smoothly through the ventilation holes without obstructing air circulation. Thus, while ensuring good dustproof effect, the heat dissipation efficiency is not affected.

[0020] Preferably, the inner wall of the first housing is provided with a frame, and through holes are provided on both sides of the frame and both sides of the first housing.

[0021] By adopting the above technical solution, external cables can be inserted into the first and second housings through the through holes, which facilitates operation.

[0022] Preferably, the top of the first housing is provided with a slot, and the bottom of the second housing is provided with a plate. The plate is engaged in the slot, and a sealing gasket is provided in the slot and the plate.

[0023] By adopting the above technical solution, the slot of the first housing and the plate of the second housing cooperate to improve the positioning accuracy when the first housing and the second housing are connected, and ensure the accuracy of their docking; the setting of the sealing gasket enhances the sealing performance of the housing connection, effectively preventing dust, moisture and other impurities from entering the housing, further improving the protective performance of the device and ensuring the stable operation of the internal components.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] This type of fuse for charging piles enables quick assembly and disassembly of the first and second housings through the cooperation of the first and second housings and the adaptation of the snap-fit ​​assembly and the snap hole. It eliminates the need for tools such as screwdrivers, facilitating quick opening of the housings for fuse replacement and maintenance. This simplifies the operation process and improves maintenance efficiency. In the snap-fit ​​assembly, the elasticity of the spring allows the slide cylinder to be stably engaged in the snap hole, ensuring the stability of the connection between the first and second housings. Furthermore, during disassembly, simply pressing the slide cylinder to compress the spring disengages it from the snap hole, achieving quick unlocking and further enhancing the convenience of housing assembly and disassembly and the reliability of the connection. Attached Figure Description

[0026] Figure 1 This is a frontal cross-sectional structural diagram of this application;

[0027] Figure 2 This is a frontal three-dimensional structural diagram of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the filtering component in this application;

[0029] Figure 4 This is a schematic diagram of the clamping component in this application;

[0030] Figure 5 for Figure 1 Enlarged structural diagram at point A;

[0031] Figure 6 This is a schematic diagram of the snap-fit ​​assembly in this application.

[0032] In the diagram: 1. First housing; 101. Slot; 102. Groove; 103. Mounting plate; 104. Hole; 2. Second housing; 201. Clamping plate; 3. Filter assembly; 301. Dustproof plate; 302. Inclined plate; 4. Mounting groove; 5. Two-way lead screw; 6. Clamping assembly; 601. Support rod; 602. Soft pad; 603. Elastic clamping plate; 7. Threaded block; 8. Slide groove; 9. Slider; 10. Frame; 11. Through hole; 12. Fusible link; 13. Protective shell; 14. Knob; 15. Ventilation hole; 16. Snap-on assembly; 1601. Slide cylinder; 1602. Spring; 1603. Column; 17. Sealing gasket. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 This application will be described in further detail below.

[0034] Example 1: A fuse for a charging pile, referring to... Figure 1 , Figure 2The system includes a first housing 1 and a second housing 2. The second housing 2 is located on the top of the first housing 1. The top of the first housing 1 has grooves 102 near both sides. A mounting plate 103 is fixedly connected to one side of the inner wall of the two grooves 102. A snap-fit ​​assembly 16 is provided on one side of the mounting plate 103. A snap-fit ​​hole 104 is provided on the other side of the grooves 102. The snap-fit ​​assembly 16 is adapted to the snap-fit ​​hole 104. Through the cooperation of the first housing 1 and the second housing 2, and the adaptation of the snap-fit ​​assembly 16 to the snap-fit ​​hole 104, the first housing 1 and the second housing 2 can be quickly disassembled and assembled without the need for screwdrivers or other tools. This facilitates quick opening of the housing for replacement and maintenance of the fuse, simplifies the operation process, and improves maintenance efficiency.

[0035] Example 2: A fuse for a charging pile, referring to... Figure 1 , Figure 4 and Figure 6The snap-fit ​​assembly 16 includes a column 1603 and a slide cylinder 1601. The slide cylinder 1601 is slidably connected to one side of the column 1603. A spring 1602 is fixedly connected to one end of the column 1603, and the other end of the spring 1602 is fixedly connected to one side of the inner wall of the slide cylinder 1601. The slide cylinder 1601 is snapped into the snap hole 104. In the snap-fit ​​assembly 16, the elasticity of the spring 1602 allows the slide cylinder 1601 to be stably snapped into the snap hole 104, ensuring the stability of the connection between the first housing 1 and the second housing 2. At the same time, during disassembly, it is only necessary to press the slide cylinder 1601 to compress the spring 1602. This allows it to disengage from the locking hole 104, enabling quick unlocking and further improving the convenience of disassembly and assembly of the housing and the reliability of the connection. The bottom of the inner wall of the first housing 1 has an installation groove 4. A bidirectional lead screw 5 is installed in the installation groove 4 via a rotating shaft. Threaded blocks 7 are threaded onto the surface of the bidirectional lead screw 5, and there are two sets of threaded blocks 7. Each set of threaded blocks 7 has a clamping assembly 6 at its top. A knob 14 is installed at the shaft end of the bidirectional lead screw 5 via a rotating shaft. Rotating the bidirectional lead screw 5 via the knob 14 causes the two sets of threaded blocks 7 and the clamping assembly 6 at the top to move synchronously closer or further away, thereby flexibly adjusting the two sets of clamping components. The spacing of component 6 can accommodate fuses of different sizes, improving the versatility of the device. It also facilitates quick positioning and fixing of the fuses, simplifying the installation process. The clamping component 6 includes a support rod 601, with an elastic clamping plate 603 at its top. The elastic clamping plate 603 is arc-shaped and contains a soft pad 602. Fusible pins 12 are located within the two sets of elastic clamping plates 603. In the clamping component 6, the arc-shaped elastic clamping plate 603 better conforms to the shape of the fuse, and its own elasticity allows for a tight clamping of the fuse, ensuring... The stability of the conductive connection; the soft pad 602 can play a buffering role during clamping, preventing the fuse from being damaged due to excessive clamping force, thus improving the protection effect of the fuse. The bottom of the mounting groove 4 is provided with a sliding groove 8, and a slider 9 is slidably connected in the sliding groove 8. The slider 9 is fixedly connected to one side of the threaded block 7. The sliding groove 8 at the bottom of the mounting groove 4 and the slider 9 on the threaded block 7 slide together, which can guide the movement direction of the threaded block 7, ensuring that the clamping component 6 moves stably along a straight line during the adjustment process, avoiding deviation or jamming, and improving the smoothness and accuracy of the adjustment process.

[0036] Example 3: A fuse for a charging pile, referring to... Figure 1 , Figure 3 and Figure 5A protective shell 13 is installed on the top of the second housing 2. The protective shell 13 is made of high-temperature resistant material. Both the protective shell 13 and the top of the second housing 2 have ventilation holes 15. A filter assembly 3 is installed inside the ventilation holes 15. The high-temperature resistant protective shell 13 can effectively protect the second housing 2 and the outside of the first housing 1 from high temperatures. The ventilation holes 15 can promote air circulation inside and outside the housing, realize heat dissipation, and prevent heat accumulation from affecting the performance of the device. The filter assembly 3 can block external dust from entering the housing, ensure internal cleanliness, and ensure the service life of the device. The filter assembly 3 includes a dustproof plate 301. The inner wall of the dustproof plate 301 is provided with multiple inclined plates 302. The dustproof plate 301 and multiple inclined plates 302 in the filter assembly 3 can effectively block external dust from entering the housing. At the same time, the structural design of the inclined plates 302 can guide the airflow smoothly through the ventilation holes 15 without obstructing air circulation, thereby ensuring good air quality. To ensure dustproof performance and maintain heat dissipation efficiency, a frame 10 is provided on the inner wall of the first housing 1. Through holes 11 are provided on both sides of the frame 10 and both sides of the first housing 1. External cables can be inserted into the first housing 1 and the second housing 2 through these through holes 11 for easy operation. A slot 101 is provided on the top of the first housing 1, and a retaining plate 201 is provided on the bottom of the second housing 2. The retaining plate 201 engages with the slot 101. Sealing gaskets 17 are provided in both the slot 101 and the retaining plate 201. The engagement of the slot 101 of the first housing 1 and the retaining plate 201 of the second housing 2 improves the positioning accuracy when connecting the two housings, ensuring accurate docking. The sealing gaskets 17 enhance the sealing at the housing connection, effectively preventing dust, moisture, and other impurities from entering the housing, further improving the device's protective performance and ensuring stable operation of internal components.

[0037] The implementation principle of this application embodiment is as follows: In use, the fuse element must first be installed into the device. Pressing the slide cylinder 1601 in the grooves 102 on both sides of the first housing 1 compresses the spring 1602 and disengages from the locking hole 104, thus separating the first housing 1 from the second housing 2. Then, the fuse element is placed between the two sets of clamping components 6. Rotating the knob 14 drives the bidirectional lead screw 5 to rotate. The threaded block 7 moves linearly under the guidance of the slide groove 8 and the slider 9, causing the two sets of elastic clamping plates 603 to move closer simultaneously. Adjusting the two sets of clamping components 6 to the appropriate position, the arc-shaped elastic clamping plates 603 conform to the shape of the fuse element using their own elasticity, forming a tight and buffered clamping with the soft pad 602, thus fixing the fuse element. After installation, the second housing 2 is placed on top of the first housing 1, and the locking plate 201 locks in place. The first housing 1 and the second housing 2 are connected by pressing down the first housing 1 and the second housing 2. The first housing 1 and the second housing 2 are connected by pressing down the second housing 2. The spring 1602 returns to its original position and pushes the first housing 1601 into the second housing 2, thus achieving a stable connection. External cables can be connected through the frame 10 and the through hole 11 of the first housing 1 to form a complete circuit. During use, the high-temperature resistant protective shell 13 can block the high temperature generated when the fuse melts. The ventilation hole 15 promotes air circulation to achieve heat dissipation. The dustproof plate 301 and the inclined plate 302 of the filter assembly 3 block dust while guiding airflow to ensure heat dissipation efficiency. No screwdriver is needed throughout the process, making the operation convenient and efficient.

[0038] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fuse for charging piles, comprising a first housing (1) and a second housing (2), characterized in that: The second housing (2) is disposed on the top of the first housing (1). The top of the first housing (1) is provided with grooves (102) near both sides. An installation plate (103) is fixedly connected to one side of the inner wall of the two grooves (102). A buckle assembly (16) is provided on one side of the installation plate (103). A buckle hole (104) is provided on the other side of the groove (102). The buckle assembly (16) is adapted to the buckle hole (104).

2. The fuse according to claim 1, characterized in that: The buckle assembly (16) includes a column (1603) and a slide cylinder (1601). The slide cylinder (1601) is slidably connected to one side of the column (1603). One end of the column (1603) is fixedly connected to a spring (1602). The other end of the spring (1602) is fixedly connected to one side of the inner wall of the slide cylinder (1601). The slide cylinder (1601) is snapped into the buckle hole (104).

3. The fuse according to claim 1, characterized in that: The bottom of the inner wall of the first housing (1) is provided with an installation groove (4). A bidirectional lead screw (5) is provided in the installation groove (4) through a rotating shaft. A threaded block (7) is threadedly connected to the surface of the bidirectional lead screw (5). There are two sets of threaded blocks (7). A clamping assembly (6) is provided on the top of each set of threaded blocks (7). A knob (14) is provided at the shaft end of the bidirectional lead screw (5) through a rotating shaft.

4. A fuse for a charging pile according to claim 3, characterized in that: The clamping assembly (6) includes a support rod (601), and an elastic clamping plate (603) is provided at the top of the support rod (601). The elastic clamping plate (603) is arc-shaped, and a soft pad (602) is provided inside the elastic clamping plate (603). Fusible posts (12) are provided inside the two sets of elastic clamping plates (603).

5. A fuse for a charging pile according to claim 3, characterized in that: The bottom of the mounting groove (4) is provided with a sliding groove (8), and a slider (9) is slidably connected in the sliding groove (8). The slider (9) is fixedly connected to one side of the threaded block (7).

6. A fuse for a charging pile according to claim 1, characterized in that: The top of the second housing (2) is provided with a protective shell (13), which is made of high temperature resistant material. Both the protective shell (13) and the top of the second housing (2) are provided with ventilation holes (15), and a filter assembly (3) is provided in the ventilation holes (15).

7. A fuse for a charging pile according to claim 6, characterized in that: The filter assembly (3) includes a dustproof plate (301), and the inner wall of the dustproof plate (301) is provided with a plurality of inclined plates (302).

8. A fuse for a charging pile according to claim 1, characterized in that: The inner wall of the first housing (1) is provided with a frame (10), and through holes (11) are provided on both sides of the frame (10) and both sides of the first housing (1).

9. A fuse for a charging pile according to claim 1, characterized in that: The top of the first housing (1) is provided with a slot (101), and the bottom of the second housing (2) is provided with a plate (201). The plate (201) is engaged in the slot (101), and a sealing gasket (17) is provided in the slot (101) and the plate (201).

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