Connecting structure suitable for vibration working condition connector and high-voltage fusing connector

Abstract

The invention discloses a connecting structure suitable for a vibration working condition connector, which comprises a first buckle plate elastically connected to one side, far away from the plugging end of a plug, of the inner wall of the plug and a first clamping block arranged on the outer surface of a socket, and the first clamping block comprises a first inclined surface facing one end of the plug and a first vertical surface at the other end of the plug; a second clamping block is arranged on one side, facing the first clamping block, of the first buckle plate; a second vertical surface is arranged on one side, far away from the plug plugging end, of the second clamping block; the socket further comprises an unlocking mechanism arranged on the side face of the socket shaft and away from one side of the plugging end of the socket, the unlocking mechanism comprises a trigger rod and a first elastic piece, one end of the trigger rod is aligned with the second buckle plate on the abutting block in the socket, and the other end of the trigger rod is connected to the side wall of the socket shaft through the first elastic piece. On the premise that high anti-seismic reliability is met, the operation step of replacing a tubular fuse in an existing electric connector is reduced, so that replacement operation is more convenient, and the requirement for timely replacement in the scene of new energy and rail transit is met more easily.

Description

Technical Field

[0001] This invention relates to the field of electrical connector technology, and more particularly to connection structures suitable for connectors operating under vibration conditions and high-voltage fusible connectors. Background Technology

[0002] In electrical connectors, fuses are typically connected in series in the conductive path as a protective element in the circuit. Their function is equivalent to a "fusible wire." The two ends of the fuse are usually directly connected to the conductive terminals of the connector (such as plugs for integrated wiring harnesses or sockets for attachment at the application site), forming a complete conductive path. Under normal operation, the fuse acts as a conductor connecting the circuit; when an overload occurs, the fuse melts to cut off the circuit, providing overcurrent protection.

[0003] Tubular fuses are commonly used in electrical connectors. Their fusible element is enclosed within an insulating tube, and they are divided into unfilled and filled types. Among them, filled closed-tube fuses include... Figure 3 As shown, it includes a tube body and two terminals and inserts at both ends of the tube body. The terminals and inserts are used to connect to the positive circuit or live wire. The tube body is filled with quartz sand and combined with grid-shaped copper molten metal. Due to its strong rapid arc extinguishing ability and high breaking capacity, it is suitable for use in high voltage and high current scenarios such as industrial power distribution systems, power transmission and distribution equipment and electric vehicles.

[0004] In scenarios like rail transit and new energy vehicles, where components are densely packed and space is limited, it's impossible to achieve the automatic detachment of the fuse to isolate electrical gaps, as is possible in outdoor electrical cabinets. Furthermore, in these scenarios, immediate replacement and maintenance are typically required when a fuse blows.

[0005] These types of electrical connectors typically employ a tight fit or interference fit method to install the tubular fuse between the socket and the plug, and use clips to secure the socket and plug together. This allows for use in scenarios with significant vibration, such as rail transit and new energy vehicles, especially in ultra-high voltage applications like high-speed rail, new energy mountain mining trucks, and new energy trucks. Figure 1-2 As shown, after the electrical connector melts, it is necessary to first remove the clips between the plug and the socket, and then proceed as follows: Figure 5 The special tool shown can be used to unlock the latch on the plug to separate the plug from the socket. You also need to press the latch on the end face of the socket to remove the end face of the fuse, so that the end face of the tubular fuse is exposed. Finally, you need to pull out the tubular fuse inside the socket.

[0006] It is evident that when existing electrical connectors using tubular fuses are applied to high-voltage vibration conditions, although they achieve high shock resistance through tight assembly, they also require considerable force during replacement and the operation steps are too complicated, making it difficult to meet the problem of timely replacement. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a connection structure and a high-voltage fuse connector suitable for vibration conditions. While meeting the requirements of high seismic reliability, it reduces the operation steps of replacing tubular fuses in existing electrical connectors, making the replacement operation more convenient and easier to meet the timely replacement requirements in scenarios such as new energy and rail transit.

[0008] Firstly, in order to achieve the above objectives, the present invention provides the following technical solution: A connection structure suitable for a connector under vibration conditions includes a first snap plate elastically connected to the inner wall of the plug on the side away from the plug insertion end and a first locking block disposed on the outer surface of the socket. The first locking block includes a first inclined surface facing one end of the plug and a first vertical surface facing the other end. A second locking block is provided on the side of the first snap plate facing the first locking block, and a second vertical surface is provided on the side of the second locking block away from the plug insertion end. It also includes an unlocking mechanism located on the side of the socket shaft and away from the socket plug end. The unlocking mechanism includes a trigger rod and a first elastic element. One end of the trigger rod is aligned with the second buckle plate on the inner abutment block of the socket, and the other end of the trigger rod is connected to the side wall of the socket shaft through the first elastic element. The first buckle plate is provided with an unlocking block on the same surface as the second latching block and on the side near the plug insertion end. The end of the unlocking block near the first latching block is a second inclined surface. When the unlocking block passes the end of the trigger rod, the trigger rod is driven to press the second buckle plate on the abutment block. At the same time, the first elastic element receives a reaction force. When the unlocking block is disengaged from the trigger rod, the first elastic element drives the trigger rod to move away from the second buckle plate.

[0009] By adopting this implementation method, while meeting the requirements of high seismic reliability, the operation steps for replacing tubular fuses in existing electrical connectors are reduced, making the replacement operation more convenient and easier to meet the timely replacement requirements in scenarios such as new energy and rail transit.

[0010] In one embodiment, the socket has a first mounting groove on its axial side wall for mounting an unlocking mechanism. The first mounting groove is vertically aligned with the second buckle plate. The unlocking mechanism also includes a base detachably connected to the first mounting groove. The trigger rod is connected to the base via a first elastic element.

[0011] In one embodiment, the unlocking mechanism further includes a cover plate detachably connected to the surface of the base facing the first buckle plate and detachably connected to the surface of the first mounting groove facing the first buckle plate. The first elastic element is a first spring sheet. The inner wall of the base includes two straight walls and two inclined walls that are staggered. The two first spring sheets are disposed on the axial side of the trigger rod and inclined towards the inclined walls. The free ends of the two first spring sheets face the first buckle plate. The tapering direction of the two inclined walls is opposite to the orientation of the first spring sheets.

[0012] By adopting this implementation method, it is ensured that the stop block can only be unlocked along with the plug when the tubular fuse needs to be replaced and during the disassembly operation. At other times, it can resist the vibration of the vibration condition without causing the tubular fuse to unlock automatically, thus ensuring the reliability of this connection structure under vibration conditions and the convenience of disassembly and assembly operations.

[0013] In one embodiment, the trigger rod includes a top head, a top rod, and a connecting rod. The top head and the top rod are symmetrically and slidably connected to the base. The middle part of the connecting rod is rotatably connected to the base. Both ends of the connecting rod are slidably connected to sleeve rods. The two sleeve rods are rotatably connected to the top head and the top rod, respectively. The two first spring pieces are provided on the two sides of the top rod facing the inclined wall. The unlocking block has a groove through which the top head can pass. The top head is a triangular prism or trapezoidal prism with its beveled side facing the first locking block. The edge of the top head away from the base protrudes outward. The inner wall of the groove is provided with a guide post.

[0014] This implementation method constructs a connection structure for electrical connectors that is easier to apply to scenarios with large vibrations and narrow spaces, such as new energy and rail transit.

[0015] In one embodiment, the two first spring clips are replaced by being located on the two sides of the top facing the inclined wall, and the free ends of the first spring clips are replaced by facing the second buckle plate.

[0016] In one embodiment, the first buckle plate is fixedly connected to the inner wall of the plug, and the inner wall of the plug is also provided with a limiting plate parallel to the first buckle plate. The limiting plate is provided with a third locking block on the side of the plug insertion end. The third locking block includes a third inclined surface on the side facing the plug insertion end and a third vertical surface on the other end. The end of the limiting plate facing the third locking block is L-shaped so that the third inclined surface of the third locking block contacts the first vertical surface of the first locking block.

[0017] This implementation method ensures high shock resistance for the connection between the plug and the socket, while also making it more convenient to unlock the plug from the socket.

[0018] Secondly, in order to achieve the above objectives, the present invention also provides the following technical solution: A high-voltage fuse connector, including the connection structure described above, further includes a plug and a socket. The socket is provided with a first plug terminal for electrical insertion of a tubular fuse, and the plug is provided with a second plug terminal for electrical insertion of a tubular fuse. The socket includes a first receiving cavity and a second receiving cavity that are interconnected. The first receiving cavity is used to house the tubular fuse, and a stop block is slidably connected in the second receiving cavity. The stop block is provided with a plug hole for insertion of the insert and the second plug terminal of the tubular fuse. The stop block is provided with a second latching plate, and the second latching plate is provided with a stop block. The inner wall of the second receiving cavity is provided with a fourth locking block that can be snapped into the second latching plate. After the stop block is assembled, the opposing surfaces of the fourth locking block and the stop block are both planes, and the opposing surfaces of the stop block and the fourth locking block are both inclined surfaces. The end of the first receiving cavity away from the second receiving cavity is a tapered hole, and the end face of the abutment block near the first receiving cavity is provided with a tapered groove that communicates with the insertion hole, and the tapering direction of the tapered hole and the tapered groove are opposite. It also includes a third elastic element located on the side of the tubular fuse near the first plug terminal, which drives the tubular fuse to move toward the second receiving cavity after the stop block is removed.

[0019] Compared with existing methods, this implementation method eliminates the steps of manually unlocking the stop block and manually removing the tubular fuse. It not only has high seismic resistance, but also significantly reduces the operational difficulty and safety of replacing tubular fuses, and greatly improves the speed of timely replacement. It is very suitable for scenarios such as new energy and rail transit where there are vibration conditions, narrow spaces, and the need to replace fuses immediately after they blow.

[0020] In one embodiment, the plug is provided with an outwardly protruding and hollow enclosure, and the first buckle is fixedly connected to the side of the enclosure away from the plug insertion end; it also includes an unlocking pin, and the buckle is provided with an unlocking port on the side away from the plug insertion end for the unlocking pin to pass through. One end of the unlocking pin is an L-shaped unlocking part, and the unlocking part has a fourth inclined surface on the surface along the length direction of the unlocking pin.

[0021] Compared to existing methods, this approach eliminates the need to remove the clips between the socket and plug before using a special tool to release the lock, reducing operational steps and making it easier to meet the timely replacement requirements of tubular fuses.

[0022] In one embodiment, the surface of the abutment block is provided with a groove, the second buckle plate is disposed in the groove, both the second buckle plate and the groove are one, and the abutment block is provided with a support column to provide elastic support for the second buckle plate.

[0023] This implementation method supports the implementation of a linked unlocking method when there is only one second buckle plate.

[0024] In one embodiment, the second buckle plate and the groove are both an even number and are symmetrically distributed on the axial side of the abutment block; The abutment block is provided with a through groove that passes through the two grooves. The two pillars are both racks and are slidably connected to the two sides of the inner wall of the through groove. One end of the two pillars is connected to two second buckles respectively. The other end of the two pillars is connected to the limiting block at the opening of the through groove through a second elastic element. The through groove is also rotatably connected to a synchronous gear that meshes with the two pillars at the same time.

[0025] This implementation method supports the application of locking methods for tubular fuses in existing conventional electrical connectors, offering better adaptability and stronger shock resistance.

[0026] Compared with the prior art, the beneficial effects of this invention are as follows: while meeting the requirements of high seismic reliability, it reduces the operation steps of replacing tubular fuses in existing electrical connectors, thus making the replacement operation more convenient and easier to meet the timely replacement requirements in scenarios such as new energy and rail transit. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an existing high-voltage fusible connector; Figure 2 This is a schematic diagram of the assembly of an existing high-voltage fusible connector; Figure 3 This is a front view of the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 4 This is a perspective view of the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 5 Structural diagrams of existing specialized tools and the specialized tool proposed in this invention for connectors suitable for vibration conditions; Figure 6 This is a front view of the socket in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 7 This is a front view of the abutment block in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 8 This is a front view of the plug structure in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 9 This is a three-dimensional assembly diagram of the high-voltage fusible connector proposed in this invention; Figure 10 This is a perspective view of the abutment block in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 11This is a perspective view of the unlocking mechanism in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 12 This is a front view of the first snap plate in the connection structure of the connector suitable for vibration conditions proposed in this invention; Figure 13 This is a schematic diagram of the assembly of the plug and socket in the high-voltage fuse connector proposed in this invention; Figure 14 This is a perspective view of the first snap plate in the connection structure of the connector suitable for vibration conditions proposed in this invention.

[0028] In the diagram: A, tubular fuse; 1. Plug; 10. Second plug terminal; 11. First buckle plate; 111. Second locking block; 1111. Second vertical surface; 112. Unlocking block; 1121. Second inclined surface; 1122. Receiving groove; 1123. Guide post; 12. Limiting plate; 123. Third locking block; 1231. Third inclined surface; 1232. Third vertical surface; 13. Enclosure; 14. Unlocking port; 2. Socket; 20. First plug-in terminal; 21. First locking block; 211. First inclined surface; 212. First vertical surface; 22. First receiving cavity; 221. Tapered hole; 23. Second receiving cavity; 231. Fourth locking block; 24. Abutment block; 241. Groove; 242. Second buckle plate; 2421. Stop block; 243. Plug-in hole; 244. Tapered groove; 245. Through groove; 2451. Limiting block; 246. Support column; 247. Second elastic element; 248. Synchronous gear; 25. First mounting groove; 3. The third elastic element; 4. Unlocking mechanism; 41. Trigger rod; 411. Top head; 412. Top rod; 413. Connecting rod; 414. Sleeve rod; 42. First elastic element; 421. First spring piece; 43. Base; 431. Straight wall; 432. Sloping wall; 44. Cover plate; 5. Unlocking pin; 51. Unlocking part; 52. Fourth inclined surface. Detailed Implementation

[0029] Current filled sealed tubular fuses A (such as Figure 3 When used in electrical connectors for applications involving significant vibration and confined spaces, such as rail transit and new energy vehicles (especially high-speed rail, new energy mountain mining trucks, and new energy trucks with ultra-high voltage power transmission), a method such as... Figure 1-2The installation method shown includes a socket 2 with an open structure and a plug 1. The tubular fuse A is tightly assembled in the socket 2 and is installed on the end face of the base plug end by a stop block 24, so that the tubular fuse A is locked in the socket 2. Finally, the plug 1 is inserted into the stop block 24 to complete the electrical connection. The plug 1 and the socket 2 are fixed by the snap to complete the assembly. The advantage of this method is that special tools must be used for disassembly and assembly to ensure that the snap connection will not loosen on its own under vibration conditions.

[0030] However, in scenarios such as rail transit and new energy vehicles, it is required that the fuse be replaced immediately after it blows. But when disassembling the tubular fuse A, the electrical connector requires multiple disassembly steps, which is quite complicated and affects the timeliness of fuse replacement.

[0031] It should be understood that the following embodiments are all intended to address the problem of the relatively complex operation when replacing fuses in electrical connectors under existing vibration conditions.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Please see Figure 1-14 The present invention provides the following technical solution: a connection structure suitable for a connector under vibration conditions, including a first buckle plate 11 elastically connected to the inner wall of the plug 1 on the side away from the plug end of the plug 1 and a first locking block 21 disposed on the outer surface of the socket 2. The first locking block 21 includes a first inclined surface 211 facing one end of the plug 1 and a first vertical surface 212 at the other end. A second locking block 111 is provided on the side of the first buckle plate 11 facing the first locking block 21, and a second vertical surface 1111 is provided on the side of the second locking block 1 away from the plug end of the plug 1. It also includes an unlocking mechanism 4 located on the side of the socket 2 shaft and away from the plug end of the socket 2. The unlocking mechanism 4 includes a trigger rod 41 and a first elastic member 42. One end of the trigger rod 41 is aligned with the second buckle 242 on the inner abutment block 24 of the socket 2, and the other end of the trigger rod 41 is connected to the side wall of the socket 2 shaft through the first elastic member 42. On the same surface as the second latching block 111 and on the side near the plug 1 insertion end, the first latching plate 11 is also provided with an unlocking block 112. The end of the unlocking block 112 near the first latching block 21 is a second inclined surface 1121. When the unlocking block 112 passes the end of the trigger rod 41, the trigger rod 41 is driven to press the second latching plate 242 on the abutment block 24. At the same time, the first elastic member 42 receives a reaction force. When the unlocking block 112 is disengaged from the trigger rod 41, the first elastic member 42 drives the trigger rod 41 to move away from the second latching plate 242.

[0034] As an optional implementation of the present invention, when the tubular fuse A blows, one end of the first retaining plate 11 is lifted using a special tool, causing the second locking block 111 on the first retaining plate 11 to separate from the first locking block 21. At this time, the plug 1 is pulled, and the first retaining plate 11 moves together with the plug 1. The second locking block 111 slides away from the outer surface of the first locking block 21. When the second locking block 111 is no longer in contact with the first locking block 21, the first retaining plate 11 returns to its original shape due to its own elasticity. At this time, the end face of the plug 1 (i.e., the insertion end face of the plug 1) has separated from the abutment block 24 in the socket 2, while the inner wall of the plug 1 is not completely attached to the plug. The axial surface of plug 1 detaches, so continue to pull out plug 1; when the unlocking block 112 on the first latch plate 11 contacts the trigger rod 41, it can press the trigger rod 41, causing the trigger rod 41 to move toward the second latch plate 242 and drive the second latch plate 242 to retract, so that the stop block 24 is unlocked; after the first latch plate 11 passes the trigger rod 41, the first elastic element 42 drives the trigger rod 41 to reset, avoiding blocking the disassembly and assembly of the tubular fuse A; after plug 1 is completely separated from socket 2, the snap connection between the stop block 24 and socket 2 has been unlocked, so the tubular fuse A can be removed directly after the stop block 24 is removed for replacement. After installing the tubular fuse A, insert the stop block 24 into the socket 2, so that the stop block 24 and the tubular fuse A are properly connected. Align the plug 1 with the plug end of the socket 2 and put it on the surface of the socket 2. Push the plug 1 so that the plug 1 is connected to the socket 2. During this process, the unlocking block 112 on the first snap plate 11 first contacts the first inclined surface 211 of the first locking block 21. Due to the guide of the inclined surface, the first snap plate 11 bends upward, so the unlocking block 112 can pass smoothly through the first locking block 21. Then the second locking block 111 contacts the first inclined surface 211 of the first locking block 21. Also due to the guide of the inclined surface, the second locking block 111 passes smoothly through the first locking block 21. When the second locking block 111 passes through the first locking block 21, the first snap plate 11 springs back to its original position, so that the first vertical surface 212 contacts the second vertical surface 1111. The first snap plate 11 is held in place by the first locking block 21 and cannot be removed. At this time, the stop block 24 is locked between the plug 1 and the socket 2.

[0035] The stop block 24 can be first fixed to the inner wall of the socket 2 by a snap, or it can be pushed by the plug 1 on the socket 2 before being fully inserted into the socket 2, thereby completing the snap-fixing with the inner wall of the socket 2. Alternatively, the stop block 24 can be electrically connected to the plug 1 first, and then installed on the socket 2 together with the installation of the plug 1.

[0036] The specialized tools included can be such as Figure 5 The existing method shown can also be as follows: Figure 5 The method shown is mainly to pry up one end of the first latch plate 11, thereby separating the second latch 111 from the first latch 21, and thus releasing the plug 1 from the socket 2. Therefore, it can also be a very simple pry bar.

[0037] In this embodiment, there is one second buckle plate 242. Although we can set the same number of first buckle plates 11 and second buckle plates 242, since the first buckle plates 11 all require special tools to unlock, multiple first buckle plates 11 would be more difficult to operate. Therefore, it is only when there is one second buckle plate 242 that the replacement operation is more convenient.

[0038] During the entire replacement operation, after the first buckle 11 is released from locking the first latch 21, the entire plug 1 is pulled out along with the first buckle 11. It is not necessary to pull out the latch (corresponding to the first buckle 11 in this embodiment) first and then pull out the plug 1. Furthermore, during the process of unplugging plug 1, the first retaining plate 11 will drive the second retaining plate 242 on the stop block 24 to move, thereby automatically releasing the restriction of the stop block 24 on the tubular fuse A. Therefore, when plug 1 is separated from socket 2, the stop block 24 will be unlocked at the same time, without the need to manually release the latching connection between the stop block 24 and socket 2 separately. In particular, the surface temperature of the tubular fuse A is high after it has just melted, which leads to a high temperature of the inner wall of socket 2. Moreover, the gap between the second retaining plate 242 and the inner wall of socket 2 is small, making it inconvenient to directly press the second retaining plate 242 by hand to unlock it. Using tools would add an extra step to the operation. Therefore, compared with the existing method, this method is more likely to meet the timeliness of immediate replacement.

[0039] In some embodiments, the first elastic element 42 can be a spring or a sheet spring, both of which are common existing design solutions, and this embodiment does not make specific limitations on them.

[0040] In other embodiments, the first latching plate 11 can be two parallel plates, and the second locking block 111 and the unlocking block 112 are respectively located on the two first latching plates 11, such as... Figure 13-14As shown, in this case, the two first latching plates 11 are independently connected to the side of the axial surface of the plug 1 away from the insertion end, and both first latching plates 11 are parallel to the insertion direction of the plug 1. This design means that one first latching plate 11 is specifically responsible for unlocking the plug 1 and the socket 2, and the other first latching plate 11 is specifically responsible for unlocking the socket 2 against the abutment block 24; the actions of the two first latching plates 11 do not interfere with each other. The aforementioned method of having both a second locking block 111 and an unlocking block 112 on one first latching plate 11 requires that the distance between the unlocking block 112 and the trigger rod 41 must not be less than the maximum length of the first locking block 21 and / or the second locking block 111 in the insertion / removal direction (i.e.: ,in: The distance between the unlocking block 112 and the trigger rod 41 on the first latch plate 11 is equal to the distance between the unlocking block 112 and the trigger rod 41 in the insertion / removal direction. This indicates the maximum length of the first card block 21 in the insertion / removal direction. (This indicates the maximum length of the second locking block 111 in the insertion / removal direction). Otherwise, the first latch plate 11 may be lifted during the sliding contact between the second locking block 111 and the inclined guide of the first locking block 21, causing the unlocking block 112 to fail to apply pressure to the trigger rod 41, resulting in the failure of the abutment block 24 to unlock in the socket 2. Therefore, the length of the first latch plate 11 is required to be relatively long, which also results in a relatively long lever arm of the first latch plate 11. However, since the vibration of new energy and rail transit usually comes from the road surface, such electrical connectors are usually used in battery packs rather than high-frequency areas such as motors. Moreover, a long lever arm means that the natural frequency of the first latch plate 11 is low. Therefore, it is easier for the frequency of the first latch plate 11 to reach the frequency of the vibration condition and cause resonance. This makes the first latch plate 11 more likely to generate a large amplitude and jump automatically with the vibration condition. Therefore, the risk of the second locking block 111 loosening from the first locking block 21 is higher, that is, the risk of the socket 2 and plug 1 separating is higher. In summary, using two first snap plates 11 makes it easier to support the application of electrical connectors in vibration conditions compared to using a single first snap plate 11. Furthermore, the first buckle plate 11 with the unlocking block 112 slides with the axial side surface of the socket 2 and is fixedly connected to the inner wall of the plug 1. This is because the unlocking block 112 mainly bears the pressure of the trigger rod 41 and does not need to move itself. Therefore, it can be directly fixed to the inner wall of the plug 1, while the sliding fit ensures the effectiveness of moving the trigger rod 41.

[0041] By adopting this implementation method, while meeting the requirements of high seismic reliability, the operation steps for replacing tubular fuse A in existing electrical connectors are reduced. Therefore, the replacement operation is more convenient and it is easier to meet the timely replacement requirements in scenarios such as new energy and rail transit.

[0042] Example 2: Please see Figure 1-14 The present invention provides the following technical solution: a connection structure suitable for a connector under vibration conditions, including a first buckle plate 11 elastically connected to the inner wall of the plug 1 on the side away from the plug end of the plug 1 and a first locking block 21 disposed on the outer surface of the socket 2. The first locking block 21 includes a first inclined surface 211 facing one end of the plug 1 and a first vertical surface 212 at the other end. A second locking block 111 is provided on the side of the first buckle plate 11 facing the first locking block 21, and a second vertical surface 1111 is provided on the side of the second locking block 1 away from the plug end of the plug 1. It also includes an unlocking mechanism 4 located on the side of the socket 2 shaft and away from the plug end of the socket 2. The unlocking mechanism 4 includes a trigger rod 41 and a first spring piece 421. One end of the trigger rod 41 is aligned with the second buckle plate 242 on the inner abutment block 24 of the socket 2, and the other end of the trigger rod 41 is connected to the side wall of the socket 2 shaft through the first spring piece 421. On the same surface as the second latching block 111 and on the side near the plug end of the plug 1, the first latching plate 11 is also provided with an unlocking block 112. The end of the unlocking block 112 near the first latching block 21 is a second inclined surface 1121. When the unlocking block 112 passes the end of the trigger rod 41, the trigger rod 41 is driven to press the second latching plate 242 on the abutment block 24. At the same time, the first spring piece 421 receives a reaction force. When the unlocking block 112 is disengaged from the trigger rod 41, the first spring piece 421 drives the trigger rod 41 to move away from the second latching plate 242. The axial side wall of the socket 2 is provided with a first mounting groove 25 for installing the unlocking mechanism 4. The first mounting groove 25 is vertically aligned with the second buckle plate 242. The unlocking mechanism 4 also includes a base 43 and a cover plate 44. The trigger rod 41 is connected to the base 43 through a first spring piece 421. The inner wall of the base 43 includes two straight walls 431 and two inclined walls 432 that are staggered. The cover plate 44 is detachably connected to the surface of the base 43 facing the first buckle plate 11. The cover plate 44 is detachably connected to the surface of the first mounting groove 25 facing the first buckle plate 11. The two first spring pieces 421 are provided on the axial side of the trigger rod 41 and are inclined towards the inclined walls 432. The free ends of the two first spring pieces 421 face the first buckle plate 11. The tapering direction of the two inclined walls 432 is opposite to the orientation of the first spring pieces 421.

[0043] As an optional implementation of the present invention, based on Embodiment 1, this embodiment further defines the connection method of the unlocking mechanism 4 on the socket 2. Since the socket 2 has an open structure, its wall thickness provides a connection position for the first spring piece 421. However, directly installing the first spring piece 421 is difficult due to its size. Therefore, it is more reasonable to first install the first spring piece 421 to the base 43, and then install the base 43 on the axial surface of the socket 2. In addition, compared with a spring, the spring piece does not need to occupy more radial space in the socket 2, and its stroke for triggering the unlocking of the second latch plate 242 is not large. Therefore, the spring piece method is more reasonable.

[0044] Furthermore, we have further defined the shape of the base 43. The base 43 is formed by two inclined walls 432 and two straight walls 431, which form a trapezoidal columnar groove. When the trigger rod 41 is pressed, the trigger rod 41 moves toward the second buckle plate 242, and the first spring piece 421 retracts toward the surface of the trigger rod 41 to obtain a reaction force. This allows the trigger rod 41 to automatically reset toward the first buckle plate 11 after the pressure on the trigger rod 41 is removed, and be limited by the cover plate 44. The advantage of this design is that when new energy vehicles or rail transit experience significant vibrations, even if the trigger rod 41 itself is subjected to significant vibrations, it will not apply pressure to the first latch plate 11 due to the limiting effect of the cover plate 44, causing the first latch plate 11 to lock the plug 1 in the socket 2. Furthermore, since the first spring piece 421 can always drive the trigger rod 41 to reset, the trigger rod 41 will not automatically apply significant pressure to the second latch plate 242, causing the second latch plate 242 to automatically release the lock on the tubular fuse A. Also, when disassembling the tubular fuse A, and after the unlocking block 112 has passed the trigger rod 41, the trigger rod 41 will not be unable to reset and block the end face of the tubular fuse A, preventing the tubular fuse A from being removed.

[0045] By adopting this implementation method, it is ensured that the stop block 24 can only be unlocked along with the plug 1 when the tubular fuse A needs to be replaced and during the disassembly operation. At other times, it can resist the vibration of the vibration condition without causing the tubular fuse A to unlock automatically, thus ensuring the reliability of this connection structure under vibration conditions and the convenience of disassembly and assembly operations.

[0046] In some embodiments, further, such as Figure 7 and Figure 10 As shown, the trigger rod 41 includes a top head 411, a top rod 412, and a connecting rod 413. The top head 411 and the top rod 412 are symmetrically slidably connected to the base 43. The middle part of the connecting rod 413 is rotatably connected to the base 43. Both ends of the connecting rod 413 are slidably connected to sleeve rods 414. The two sleeve rods 414 are rotatably connected to the top head 411 and the top rod 412, respectively. Two first spring pieces 421 are provided on the two sides of the top rod 412 facing the inclined wall 432. The unlocking block 112 is provided with a receiving groove 1122 through which the top head 411 can pass. The top head 411 is a triangular prism or trapezoidal prism with its beveled side facing the first locking block 21. The edge of the top head 411 away from the base 43 protrudes outward. The inner wall of the receiving groove 1122 is provided with a guide post 1123.

[0047] As an optional implementation of the present invention, the specific method of the trigger rod 41 is further defined. Considering that in scenarios such as new energy vehicles and rail transit, electrical connectors are generally compact in size, the unlocking block 112 in the first latch plate 11 cannot be designed with a large height (i.e., the distance from the side of the first latch plate 11 facing the surface of the socket 2 to the surface of the socket 2). If the height is too large, more space is needed to ensure the elastic bending margin of the first latch plate 11 required when unlocking the first latch block 21 and the second latch block 111. However, this would result in insufficient space and occupy the arrangement space of other parts in the battery pack. Therefore, the optimal choice for the height of the unlocking block 112 is to be equivalent to the stroke of the trigger rod 41. However, relying solely on the rebound force of the first spring piece 421 is not reliable when there is significant vibration. The above-mentioned method, in the process of pulling out the plug 1, pulls the top head 411 by the unlocking block 112, causing the top rod 412 to extend backward out of the first mounting groove 25 and apply pressure to the second latch plate 242. Firstly, it can ensure the aforementioned convenience of disassembly and replacement. Secondly, when the entire trigger rod 41 is subjected to vibration as a whole, if the top rod 412 and the top head 411 both move in the same direction, the vibration forces will cancel each other out due to the linkage of the connecting rod 413, thus the shock resistance will be better. Finally, the travel of the top head 411, the height of the top head 411 itself, and the height of the unlocking block 112 can coincide. Compared with the method of directly setting the first spring 421 on the trigger rod and then installing it in the first mounting slot 25, the trigger rod 41 does not need to have an initial height, so the height of the unlocking block 112 can be reduced.

[0048] This implementation method constructs a connection structure for electrical connectors that is easier to apply to scenarios with large vibrations and narrow spaces, such as new energy and rail transit.

[0049] In some other embodiments, the two first spring pieces 421 are replaced by being disposed on the two sides of the top 411 facing the inclined wall 432, and the free end of the first spring piece 421 is replaced by facing the second buckle plate 242.

[0050] Furthermore, in some embodiments, such as Figure 13-14As shown, the first buckle plate 11 is fixedly connected to the inner wall of the plug 1. The inner wall of the plug 1 is also provided with a limiting plate 12 parallel to the first buckle plate 11. The limiting plate 12 is provided with a third locking block 123 on the side of the plug 1 near the plug end. The third locking block 123 includes a third inclined surface 1231 on the side facing the plug end of the plug 1 and a third vertical surface 1232 on the other end. The end of the limiting plate 12 facing the third locking block 123 is L-shaped so that the third inclined surface 1231 of the third locking block 123 contacts the first vertical surface 212 of the first locking block 21.

[0051] As an optional implementation of this invention, the limiting plate 12 is actually an already used method (refer to Chinese Utility Model Patent Application No. CN202521780612.7). Its main advantage is that it allows a special tool to be directly inserted between the limiting plate 12 and the surface of the socket 2 and apply pressure towards the first locking block 21. This allows the third locking block 123 to lift the first latching plate 11, separating the second locking block 111 from the first locking block 21, making the unlocking process more convenient. However, the difference lies in the fact that, in this embodiment, both the first latching plate 11 and the limiting plate 12 are fixed to the plug 1 and cannot be separated. Therefore, the special tool can be used in a manner similar to... Figure 5 and Figure 13 As shown, the plug 1 is inserted from the open side and then hooks the limiting plate 12 to lift the first buckle plate 11. Alternatively, as described in Embodiment 3 below, an unlocking port 14 can be provided at the other end of the plug 1.

[0052] This implementation method ensures high shock resistance for the connection between plug 1 and socket 2, while also making it more convenient to unlock plug 1 on socket 2.

[0053] Example 3: Please see Figure 1-14 The present invention also provides the following technical solution: a high-voltage fuse connector, including the above-described connection structure, further including a plug 1 and a socket 2, wherein the socket 2 is provided with a first plug terminal 20 for electrical insertion of a tubular fuse A, and the plug 1 is provided with a second plug terminal 10 for electrical insertion of the tubular fuse A, wherein the socket 2 includes a first receiving cavity 22 and a second receiving cavity 23 that are mutually penetrating, the first receiving cavity 22 is used to place the tubular fuse A, and the second receiving cavity 23 is slidably connected to a... The abutment block 24 has a plug hole 243 for the insert of the tubular fuse A and the second plug terminal 10 to be connected; the abutment block 24 has a second buckle plate 242, the second buckle plate 242 has a stop block 2421, and the inner wall of the second receiving cavity 23 has a fourth locking block 231 that can be snapped together with the second buckle plate 242. After the abutment block 24 is assembled, the opposite surfaces of the fourth locking block 231 and the stop block 2421 are both flat, and the opposite surfaces of the stop block 2421 and the fourth locking block 231 are both inclined surfaces. The end of the first receiving cavity 22 away from the second receiving cavity 23 is a tapered hole 221. The end face of the abutment block 24 near the first receiving cavity 22 is provided with a tapered groove 244 that communicates with the insertion hole 243, and the tapering direction of the tapered hole 221 and the tapered groove 244 are opposite. It also includes a third elastic element 3 located on the side of the tubular fuse A near the first plug terminal 20. When the stop block 24 is removed, the third elastic element 3 drives the tubular fuse A to move toward the second receiving cavity 23.

[0054] As an optional implementation of the present invention, in Embodiment 1 or Embodiment 2, a linkage unlocking function is constructed in the case of only one second buckle plate 242 abutment block 24. However, we know that the temperature of the tubular fuse A when it melts is relatively high, generally between 50-70°C. In high-voltage scenarios, the temperature will be even higher. We also know that the existing tubular fuse A adopts a tight assembly method, which requires the operator to use additional special tools, such as heat-resistant gloves or clamps, to remove the tubular fuse A. However, it is still not convenient to pull out the tightly assembled tubular fuse A. Of course, it is also inconvenient to install. If there is a gap between the tubular fuse A and the inner wall of the socket 2, there are problems such as insufficient shock resistance and easy wear.

[0055] Although embodiments 1-2 can automatically release the locking of the stop block 24 onto the tubular fuse A, the ease of operation is still insufficient. Therefore, by designing the inner wall of the socket 2 and the end of the stop block 24 into a tapered shape, when the stop block 24 is locked to the inner wall of the socket 2, the shaft end of the tubular fuse A is simultaneously subjected to radial and axial pressure, which can force it to be aligned. It has the same anti-vibration performance as the tight assembly method, but the advantage is that when the stop block 24 is unlocked, the binding force on the tubular fuse A in all directions originating from the socket 2 itself disappears, and the third elastic member 3 located inside the depth of the socket 2 can directly pop out the tubular fuse A. This avoids the operator directly contacting the tubular fuse A under high temperature conditions, which not only greatly improves the replacement speed and reduces the difficulty of replacement operation, but also improves the safety during operation.

[0056] Compared with the existing methods, this implementation method eliminates the steps of manually unlocking the stop block 24 and manually removing the tubular fuse A. It not only has high seismic resistance, but also significantly reduces the operational difficulty and safety of replacing the tubular fuse A, and greatly improves the replacement speed. It is very suitable for scenarios such as new energy and rail transit where there are vibration conditions, narrow spaces, and the need to replace the fuse immediately after it blows.

[0057] Furthermore, such as Figure 13As shown, the plug 1 is provided with an outwardly protruding and hollow enclosure 13, and the first buckle 11 is fixedly connected to the side of the enclosure 13 away from the plug end of the plug 1; it also includes an unlocking pin 5, and the buckle is provided with an unlocking port 14 on the side away from the plug end of the plug 1, through which the unlocking pin 5 can pass. One end of the unlocking pin 5 is an L-shaped unlocking part 51, and the unlocking part 51 has a fourth inclined surface 52 on the surface of the unlocking pin 5 along its length.

[0058] As an optional implementation of the present invention, considering that the anti-vibration performance of the first buckle plate 11 cannot be abandoned, any additional design for the anti-vibration performance of the first buckle plate 11 would simply be a bolt. Therefore, directly using the existing method of using a special tool is more reliable. Although several methods of using special tools to unlock the first buckle plate 11 have been introduced above, this embodiment also proposes a new unlocking method and special tool for ease of operation. When unlocking the first buckle plate 11 from the socket 2, the fourth inclined surface 52 of the unlocking part 51 of the unlocking pin 5 can be directly inserted into the gap between the surface of the first buckle plate 11 and the socket 2 (or the gap between the limiting plate 12 and the surface of the socket 2 in embodiment 2) by directly inserting the unlocking pin 5 into the unlocking hole. When the unlocking pin 5 is pushed, the first buckle plate 11 is lifted, causing the second locking block 111 to disengage from the first locking block 21, thereby completing the unlocking.

[0059] In some embodiments, both the second elastic element 247 and the third elastic element 3 can be springs.

[0060] Compared with the existing method, this implementation method eliminates the need to remove the clip between socket 2 and plug 1 before using a special tool to release the lock between socket 2 and plug 1, reducing the number of operation steps and making it easier to meet the timely replacement requirements of tubular fuse A.

[0061] like Figure 10 As shown, the surface of the abutment block 24 is provided with a groove 241, and the second buckle plate 242 is disposed in the groove 241. The second buckle plate 242 and the groove 241 are one. The abutment block 24 is provided with a support column 246 to provide elastic support for the second buckle plate 242.

[0062] As an optional implementation of the present invention, the linkage unlocking method in Embodiment 1 or 2 can only be implemented when there is only one second buckle plate 242.

[0063] Example 4: Please see Figure 1-14The present invention also provides the following technical solution: a high-voltage fuse connector, including the above-described connection structure, further including a plug 1 and a socket 2, wherein the socket 2 is provided with a first plug terminal 20 for electrical insertion of a tubular fuse A, and the plug 1 is provided with a second plug terminal 10 for electrical insertion of the tubular fuse A, wherein the socket 2 includes a first receiving cavity 22 and a second receiving cavity 23 that are mutually penetrating, the first receiving cavity 22 is used to place the tubular fuse A, and the second receiving cavity 23 is slidably connected to a... The abutment block 24 has a plug hole 243 for the insert of the tubular fuse A and the second plug terminal 10 to be connected; the abutment block 24 has a second buckle plate 242, the second buckle plate 242 has a stop block 2421, and the inner wall of the second receiving cavity 23 has a fourth locking block 231 that can be snapped together with the second buckle plate 242. After the abutment block 24 is assembled, the opposite surfaces of the fourth locking block 231 and the stop block 2421 are both flat, and the opposite surfaces of the stop block 2421 and the fourth locking block 231 are both inclined surfaces. The end of the first receiving cavity 22 away from the second receiving cavity 23 is a tapered hole 221. The end face of the abutment block 24 near the first receiving cavity 22 is provided with a tapered groove 244 that communicates with the insertion hole 243, and the tapering direction of the tapered hole 221 and the tapered groove 244 are opposite. It also includes a third elastic element 3 located on the side of the tubular fuse A near the first plug terminal 20. When the abutment block 24 is removed, the third elastic element 3 drives the tubular fuse A to move towards the second receiving cavity 23. The surface of the abutment block 24 is provided with two symmetrical grooves 241. The second buckle plate 242 is provided in the grooves 241. The abutment block 24 is provided with a support column 246 that provides elastic support for the second buckle plate 242. The abutment block 24 is provided with a through groove 245 that passes through two grooves 241. The two pillars 246 are both racks and are slidably connected to both sides of the inner wall of the through groove 245. One end of the two pillars 246 is connected to two second buckles 242 respectively. The other end of the two pillars 246 is connected to the limiting block 2451 located at the opening of the through groove 245 through the second elastic element 247. The through groove 245 is also rotatably connected to a synchronous gear 248 that meshes with the two pillars 246.

[0064] As an optional implementation of the present invention, compared with Embodiment 3, we propose a linkage unlocking method when the abutment block 24 has two second latches 242. Since Embodiments 1-3 are for unlocking with only one second latch 242, in practice, to ensure the force balance of the abutment block 24, two second latches 242 are usually provided. The two second latches 242 are elastically supported by two pillars 246 driven by a synchronous gear 248, so that the movement of the two second latches 242 is synchronized, thereby supporting the linkage unlocking function in Embodiments 1-2.

[0065] In addition, the third elastic element 3 can also provide outward support for the second buckle plate 242, so that the second buckle plate 242 is not easily unable to reset due to vibration conditions and material fatigue after multiple replacements of the abutment block 24, which would cause the socket 2 to be unable to effectively lock the abutment block 24. Furthermore, during vibration, the two second buckle plates 242 are subjected to the same force and therefore move in the same direction. However, due to the linkage of the gears, the two second buckle plates 242 can only move in opposite directions, thus canceling out the vibration force and thus providing stronger shock resistance.

[0066] In some embodiments, the elastic coefficient of the third elastic element 3 is greater than that of the first elastic element 42, resulting in stronger seismic resistance.

[0067] This implementation method supports the application of the A-locking method for tubular fuses in existing conventional electrical connectors, offering better adaptability and stronger shock resistance.

[0068] The working principle and usage process of this invention are as follows: When the tubular fuse A blows, one end of the first retaining plate 11 is lifted using a special tool, causing the second locking block 111 on the first retaining plate 11 to separate from the first locking block 21. At this time, the plug 1 is pulled, and the first retaining plate 11 moves together with the plug 1. The second locking block 111 slides away from the outer surface of the first locking block 21. When the second locking block 111 is no longer in contact with the first locking block 21, the first retaining plate 11 returns to its original shape due to its own elasticity. At this time, the end face of the plug 1 (i.e., the insertion end face of the plug 1) has separated from the abutment block 24 in the socket 2, while the inner wall of the plug 1 is not completely separated from the plug 1. The axial surface of the plug detaches, so continue to pull out the plug 1; when the unlocking block 112 on the first buckle plate 11 contacts the trigger rod 41, it can press the trigger rod 41, causing the trigger rod 41 to move toward the second buckle plate 242 and drive the second buckle plate 242 to retract, so that the stop block 24 is unlocked; after the first buckle plate 11 passes the trigger rod 41, the first elastic element 42 drives the trigger rod 41 to reset, avoiding blocking the disassembly and assembly of the tubular fuse A; after the plug 1 is completely separated from the socket 2, the snap connection between the stop block 24 and the socket 2 has been unlocked, so the tubular fuse A can be removed directly after the stop block 24 is removed for replacement. After installing the tubular fuse A, insert the stop block 24 into the socket 2, so that the stop block 24 and the tubular fuse A are properly connected. Align the plug 1 with the plug end of the socket 2 and put it on the surface of the socket 2. Push the plug 1 so that the plug 1 is connected to the socket 2. During this process, the unlocking block 112 on the first snap plate 11 first contacts the first inclined surface 211 of the first locking block 21. Due to the guide of the inclined surface, the first snap plate 11 bends upward, so the unlocking block 112 can pass smoothly through the first locking block 21. Then the second locking block 111 contacts the first inclined surface 211 of the first locking block 21. Also due to the guide of the inclined surface, the second locking block 111 passes smoothly through the first locking block 21. When the second locking block 111 passes through the first locking block 21, the first snap plate 11 springs back to its original position, so that the first vertical surface 212 contacts the second vertical surface 1111. The first snap plate 11 is held in place by the first locking block 21 and cannot be removed. At this time, the stop block 24 is locked between the plug 1 and the socket 2.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A connecting structure suitable for a connector in vibration working condition, comprising a first clamping plate elastically connected to an inner wall of a plug away from a plug insertion end and a first clamping block arranged on an outer surface of a socket, the first clamping block comprising a first inclined surface towards a plug end and a first vertical surface at another end, a second clamping block arranged on a side of the first clamping plate towards the first clamping block, and a second vertical surface arranged on a side of the second clamping block away from the plug insertion end; wherein further comprising an unlocking mechanism arranged on a side of a socket shaft away from a socket insertion end, the unlocking mechanism comprising a trigger lever and a first elastic member, one end of the trigger lever aligned with a second clamping plate on an abutting block in the socket, and the other end of the trigger lever connected to the side wall of the socket shaft through the first elastic member; the first clamping plate further comprising an unlocking block on a side of the same surface as the second clamping block and close to the plug insertion end, one end of the unlocking block close to the first clamping block being a second inclined surface, when the unlocking block passes the end of the trigger lever, the trigger lever is driven to press the second clamping plate on the abutting block, and at the same time, the first elastic member obtains a reaction force, and after the unlocking block moves away from the trigger lever, the first elastic member drives the trigger lever to move away from the second clamping plate.

2. The connection structure according to claim 1, wherein the side wall of the socket shaft is provided with a first mounting groove for mounting the unlocking mechanism, the first mounting groove vertically aligning with the second clamping plate, the unlocking mechanism further comprising a base detachably connected in the first mounting groove, and the trigger lever connected to the base through the first elastic member.

3. The connection structure according to claim 2, wherein the unlocking mechanism further comprising a cover plate, the cover plate detachably connected to a surface of the base towards the first clamping plate, and the cover plate detachably connected to a surface of the first mounting groove towards the first clamping plate, the first elastic member being a first elastic sheet, an inner wall of the base comprising two straight walls and two inclined walls alternately connected, two first elastic sheets arranged on the side of the trigger lever and inclined towards the inclined walls, free ends of the two first elastic sheets towards the first clamping plate, and the tapering directions of the two inclined walls opposite to the directions of the first elastic sheets.

4. The connection structure according to claim 3, wherein the trigger lever comprising a top head, a top lever and a connecting rod, the top head and the top lever respectively symmetrically slidingly connected in the base, the connecting rod rotationally connected in the middle of the base, both ends of the connecting rod slidingly connected with sleeve rods, the two sleeve rods respectively rotationally connected in the top head and the top lever, and the two first elastic sheets arranged on both sides of the top lever towards the inclined walls; the unlocking block is provided with a groove for the top head to pass through, the top head being triangular columnar or trapezoidal columnar with an inclined edge towards the first clamping block, an edge of the top head away from the base outwardly protruding, and a guide column arranged on an inner wall of the groove.

5. The connection structure according to claim 4, wherein the two first elastic sheets are replaced by two first elastic sheets arranged on both sides of the top head towards the inclined walls, and the free ends of the first elastic sheets replaced to be towards the second clamping plate.

6. The connection structure according to claim 1, wherein the first clamping plate fixedly connected to the inner wall of the plug, the inner wall of the plug further comprising a limiting plate parallel to the first clamping plate, a third clamping block arranged on a side of the limiting plate close to the plug insertion end, the third clamping block comprising a third inclined surface towards a side of the plug insertion end and a third vertical surface at another end, and a side of the limiting plate towards the third clamping block being L-shaped so that the third inclined surface of the third clamping block contacts the first vertical surface of the first clamping block.

7. A high voltage fuse connector comprising the connection structure according to any one of claims 1 to 6, further comprising a plug and a socket, the socket further comprising a first plug-in terminal for electric plug-in of the tubular fuse, the plug comprising a second plug-in terminal for electric plug-in of the tubular fuse, wherein The socket comprises a first accommodating cavity and a second accommodating cavity penetrating each other, the first accommodating cavity is used for placing a tubular fuse, the second accommodating cavity is slidably connected with a stopper, the stopper is provided with a plug-in hole for inserting a tab in the tubular fuse and a second plug-in terminal; the stopper is provided with a second clamping plate, the second clamping plate is provided with a stop block, an inner wall of the second accommodating cavity is provided with a fourth clamping block for buckling connection with the second clamping plate, opposite surfaces of the fourth clamping block and the stop block after assembly are both flat surfaces, and opposite surfaces of the stop block and the fourth clamping block are both guide inclined surfaces; wherein: An end of the first accommodating cavity away from the second accommodating cavity is a tapered hole, a side end surface of the stopper close to the first accommodating cavity is provided with a tapered groove penetrating the plug-in hole, and the tapered hole and the tapered groove are opposite in taper direction; Further comprising a third elastic member on a side of the tubular fuse close to the first plug-in terminal, when the stopper is disassembled, the third elastic member drives the tubular fuse to move towards the second accommodating cavity.

8. The high voltage fuse connector of claim 7, wherein, The plug is provided with an outwardly protruding and hollow enclosure, the first clamping plate is fixedly connected to a side of the enclosure away from a plug-in end of the plug; further comprising an unlocking needle, a side of the plug away from the plug-in end is provided with an unlocking opening for the unlocking needle to pass through, one end of the unlocking needle is an L-shaped unlocking portion, and a surface of the unlocking portion in the length direction of the unlocking needle is provided with a fourth inclined surface.

9. The high voltage fuse connector of claim 7, wherein, A surface of the stopper is provided with a groove, the second clamping plate is arranged in the groove, the second clamping plate and the groove are both one, and the stopper is provided with a support column for providing elastic support for the second clamping plate.

10. The high voltage fuse connector of claim 9, wherein, The second clamping plate and the groove are both even numbers and are symmetrically distributed on the shaft side surface of the stopper; The stopper is provided with a through groove penetrating the two grooves, the two support columns are both racks and are slidably connected to the inner wall of the through groove on both sides, one end of each of the two support columns is connected to one of the two second clamping plates, the other end of each of the two support columns is connected to a limiting block at the groove opening of the through groove through a second elastic member, and the through groove is further rotatably connected with a synchronous gear engaged with the two support columns.

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