Terminal plugging equipment for large current

Abstract

The invention relates to the technical field of terminal plugging equipment, in particular to terminal plugging equipment for large current. According to the technical scheme, the device comprises a shell, a copper plate fixedly installed in the shell, an elastic piece installed in the shell and a lock catch for compressing the elastic piece, and further comprises a sawtooth reinforcing component, the sawtooth reinforcing component comprises a connecting plate installed in the shell, and a plurality of sawtooth grooves are formed in the connecting plate; a plurality of sawtooth protruding blocks corresponding to the sawtooth grooves in a one-to-one mode are installed in the shell, a rotating plate is rotatably installed in the shell, the elastic pieces press the rotating plate, and a plurality of telescopic rod pieces corresponding to the sawtooth protruding blocks in a one-to-one mode are fixedly installed on the rotating plate. According to the invention, the problem that a traditional terminal is easy to loosen because a wire is fastened by only depending on spring pressure is effectively solved, mechanical interlocking of conductive wires is realized through matching of the sequentially-driven sawtooth bumps and the grooves, the problem of stretching and abrasion of a metal wire of the wire caused by simultaneous crimping is avoided by adopting a sequential crimping mode, the integrity of connection is improved, and the service life of the connection is prolonged.

Description

Technical Field

[0001] This invention relates to the field of terminal plug-in equipment technology, and more particularly to a terminal plug-in equipment for high current applications. Background Technology

[0002] As a key connection component in electrical systems, high-current terminal plug-in devices are designed to ensure the safety and reliability of power transmission. Traditional designs often rely on the frictional force generated by spring pressure to fasten the wires. However, this single fastening method has inherent defects, namely, limited elasticity and easy loosening under long-term vibration and thermal cycling, which leads to increased contact resistance of the wires or even easy pulling out, causing overheating risks. To overcome this problem, the industry has introduced a mechanical interlocking scheme with serrated grooves and protrusions. By piercing the surface of the wire, it forms a strong tensile force, which significantly improves the fastening effect.

[0003] However, the technology itself also has challenges: if the wire is pressed into multiple grooves at the same time using the overall crimping method, the wire metal wire lacks flow space in the groove and will be subjected to severe lateral tensile stress, which may cause the internal strands to be pulled or even broken, resulting in irreversible damage and creating a hidden danger of fatigue fracture. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by proposing a high-current terminal plug-in device that, when the conductive wire is zigzaggedly bent inside the housing, bends are performed sequentially from one side of the conductive wire to the other side to prevent the problem of tensile wear on the conductive wire caused by synchronous bending.

[0005] The technical solution of the present invention: A high-current terminal plug-in device, comprising a housing, a copper plate fixedly installed inside the housing, a spring piece installed inside the housing, and a locking buckle for compressing the spring piece, and further comprising: A sawtooth reinforcement component includes a connecting plate installed inside a housing. The connecting plate has multiple sawtooth grooves. Multiple sawtooth protrusions corresponding to the sawtooth grooves are installed inside the housing. A rotating plate is rotatably installed inside the housing. A spring plate presses against the rotating plate. Multiple telescopic rods corresponding to the sawtooth protrusions are fixedly installed on the rotating plate. The lengths of the multiple telescopic rods are extendable and their maximum heights decrease sequentially. Under the elastic force of the spring plate, the sawtooth reinforcement component drives the multiple sawtooth protrusions to sequentially enter the sawtooth grooves.

[0006] Optionally, the telescopic rod includes a support cylinder fixedly installed on the rotating plate, a slide plate slidably installed inside the support cylinder, and a pressure rod fixedly installed on the slide plate. A ball bearing is rotatably installed at the top of the pressure rod, and a first spring is fixedly installed between the slide plate and the support cylinder.

[0007] Optionally, the housing is provided with a receiving groove, the connecting plate is slidably connected to the receiving groove, and a second spring is fixedly installed between the connecting plate and the receiving groove.

[0008] Optionally, a connecting rod is fixedly installed on the serrated protrusion, a slide rail is slidably installed on the connecting rod, a support rod is fixedly installed on the slide rail, a guide groove is provided inside the housing, and the support rod is slidably installed inside the guide groove.

[0009] Optionally, the housing is provided with a connecting groove, and a rotating shaft is slidably installed in the connecting groove, with the rotating plate rotatably connected to the rotating shaft.

[0010] Optionally, one end of the spring is provided with a snap-fit ​​block, the latch is rotatably connected to the outer shell and is provided with a snap-fit ​​groove, and the snap-fit ​​block snaps into the snap-fit ​​groove.

[0011] Optionally, the housing is provided with a connection hole, and a guide plate is fixedly installed inside the housing. One end of the guide plate is located at the bottom of the connection hole, and the other end of the guide plate extends to one side of the serrated reinforcement component.

[0012] Optionally, the latch is provided with an insertion hole, and the latch is provided with an insertion positioning module. The insertion positioning module includes an installation cavity located inside the latch and a limiting rod installed in the installation cavity.

[0013] Optionally, the limiting rod includes a limiting cylinder fixedly installed inside the mounting cavity, a sealing plate slidably and sealingly installed inside the limiting cylinder, and a limiting rod fixedly installed on the sealing plate, wherein the limiting rod passes through the bottom of the buckle and abuts against the surface of the outer shell; A compensating rod is fixedly installed on the sealing plate. The compensating rod passes through the top of the limiting cylinder and extends to the outside of the limiting cylinder. A third spring is fixedly installed between the compensating rod and the limiting cylinder. The two sides of the limiting cylinder are connected by a pipe, and both the pipe and the limiting cylinder are filled with hydraulic medium. A valve is fixedly installed on the pipe.

[0014] Optionally, the valve includes a valve body fixedly installed on a pipeline and a valve core slidably installed inside the valve body. A fourth spring is fixedly installed between the valve core and the valve body. A round rod is fixedly installed on the valve core, and the round rod extends into the socket and is fixedly installed with a disc.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application effectively solves the problem of easy loosening of wires when traditional terminals rely solely on spring pressure to fasten them. By using sequentially driven serrated protrusions and grooves to cooperate with each other, mechanical interlocking of the conductive wires is achieved, which greatly enhances tensile strength and vibration resistance reliability. The sequential pressing method avoids the problem of wire metal wire stretching and wear caused by simultaneous pressing, thus improving the integrity and lifespan of the connection. Attached Figure Description

[0016] Figure 1 Schematic diagram of terminal plug-in device Figure 1 ; Figure 2 Schematic diagram of terminal plug-in device Figure 2 ; Figure 3 Schematic diagram of terminal plug-in device Figure 3 ; Figure 4 Schematic diagram of terminal plug-in device Figure 4 ; Figure 5 Schematic diagram of terminal plug-in device Figure 5 ; Figure 6 This is a schematic diagram of the structure of the latch and spring clip; Figure 7 This is a schematic diagram of the internal structure of the outer shell; Figure 8 for Figure 7 A magnified view of a section at point A in the middle; Figure 9 A schematic diagram of the serrated groove and serrated protrusion; Figure 10 for Figure 9 A magnified view of a section at point B in the middle; Figure 11 This is a schematic diagram of the structure after the sawtooth groove and sawtooth protrusion are combined. Figure 12 A structural diagram showing the rising distance of the telescopic rods at different locations; Figure 13 This is a schematic diagram of the connection of the sawtooth protrusions; Figure 14 for Figure 7 A magnified view of a section at point C; Figure 15 This is a structural diagram of the plug-in positioning module; Figure 16 for Figure 15 A magnified view of a section at point D.

[0017] Reference numerals: 1. Outer shell; 11. Connecting hole; 111. Guide plate; 12. Copper plate; 13. Spring piece; 131. Snap-fit ​​block; 14. Lock; 141. Snap-fit ​​groove; 142. Insertion hole; 2. Serrated reinforcement component; 21. Connecting plate; 22. Serrated groove; 23. Serrated protrusion; 231. Connecting rod; 232. Slide rail; 233. Support rod; 234. Guide groove; 24. Rotating plate; 241. Rotating shaft; 242. Connecting groove; 25. Telescopic rod; 251. Support cylinder; 252. Slide plate; 253. Pressure rod; 254. Ball bearing; 255. First spring; 26. Receiving groove; 261. Second spring; 3. Insertion positioning module; 31. Mounting cavity; 32. Limiting rod; 321. Limiting cylinder; 322. Sealing plate; 323. Limiting rod; 324. Compensating rod; 325. Third spring; 326. Pipe; 33. Valve; 331. Valve body; 332. Valve core; 333. Fourth spring; 334. Round rod; 335. Disc; 4. Conductive wire. Detailed Implementation

[0018] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0020] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] like Figures 1 to 6 As shown, the present invention proposes a high-current terminal plug-in device, including a housing 1, a copper plate 12 fixedly installed inside the housing 1, a spring piece 13 installed inside the housing 1, and a locking buckle 14 for compressing the spring piece 13. By rotating the locking buckle 14, the spring piece 13 can be compressed. The compressed spring piece 13 will move away from the housing 1, creating a gap between the housing 1 and the spring piece 13. This gap is used to accommodate the conductive wire 4. The housing 1 is provided with a connection hole 11, through which the conductive wire 4 enters the interior of the housing 1. One end of the spring piece 13 is provided with a snap-fit ​​block 131. The locking buckle 14 is rotatably connected to the housing 1 and is provided with a snap-fit ​​groove 141. By snapping the snap-fit ​​block 131 into the snap-fit ​​groove 141, the spring piece 13 can be rotated when the locking buckle 14 is rotated, thereby compressing the spring piece 13.

[0024] like Figures 7 to 13 As shown, the terminal plug-in device of this embodiment also includes a serrated reinforcement component 2. The serrated reinforcement component 2 includes a connecting plate 21 installed inside the housing 1. The connecting plate 21 is provided with a plurality of serrated grooves 22. A plurality of serrated protrusions 23 corresponding one-to-one with the serrated grooves 22 are installed inside the housing 1. The serrated grooves 22 are used to accommodate the conductive wires 4. The serrated protrusions 23 press the conductive wires into the serrated grooves 22. Through the mutual cooperation of the serrated grooves 22 and the serrated protrusions 23, the conductive wires are embedded in the serrated grooves 22, forming a mechanical interlock, which effectively improves the tensile strength. The tensile strength of the mechanical interlock is much greater than that of pure friction, which greatly improves the reliability of the connection. Moreover, the mechanical interlock has excellent anti-vibration and anti-relaxation performance. Under long-term vibration or hot and cold cycling environment, a simple spring may experience pressure attenuation due to material creep or slight loosening, resulting in an increase in contact resistance. However, once the mechanical interlock is formed, it is not easily affected by these factors and can maintain a stable connection state for a long time.

[0025] Inside the outer casing 1, a rotating plate 24 is rotatably installed. A spring sheet 13 presses against the rotating plate 24. When the spring force of the spring sheet 13 is released, it will drive the rotating plate 24 to rotate and rotate towards the top of the outer casing 1, that is, towards the serrated groove 22. Multiple telescopic rods 25 corresponding to the serrated protrusions 23 are fixedly installed on the rotating plate 24. The length of the multiple telescopic rods 25 is telescopic and the maximum height decreases sequentially. The length of the telescopic rods 25 on the side away from the rotating axis of the rotating plate 24 is greater than that on the side closer to the rotating axis of the rotating plate 24. This makes the serrated protrusions 23 on the side closer to the connecting hole 11 compressed and moved first, and thus the conductive wire 4 on the side closer to the connecting hole 11 is compressed in a serrated shape first. It is worth noting that if the conductive wire 4 is placed directly above the serrated groove 22, and the serrated protrusion 23 that mates with the serrated groove 22 directly presses the conductive wire 4 into the serrated groove 22, the following situation will occur: When the conductive wire 4 enters the serrated groove 22, because the length of the conductive wire 4 horizontally across the serrated groove 22 is less than the length when it is fully embedded in the serrated groove 22, the conductive wire 4 will stretch to both sides to compensate for its own length, and the conductive wires 4 on both sides will also move to both sides under the influence of the adjacent serrated grooves 22. The stretching process subjectes the conductive wire 4 to a large tensile force, which may cause it to break or slide inside the serrated groove 22, generating significant friction. It may also cause the elastic force of the spring piece 13 to be unable to be released, resulting in jamming. Under the elastic force of the spring piece 13, the serrated reinforcing component 2 drives multiple serrated protrusions 23 to enter the serrated groove 22 in sequence, allowing the conductive wire 4 to gradually retract to one side. During the retraction process, the other side is not affected by resistance, allowing the conductive wire 4 to be completely embedded inside the serrated groove 22 without wear.

[0026] Furthermore, the telescopic rod 25 includes a support cylinder 251 fixedly installed on the rotating plate 24, a slide plate 252 slidably installed inside the support cylinder 251, and a pressure rod 253 fixedly installed on the slide plate 252. A ball bearing 254 is rotatably installed at the top of the pressure rod 253. A first spring 255 is fixedly installed between the slide plate 252 and the support cylinder 251. The rotating plate 24 will drive the ball bearing 254 to move upward, so that the ball bearing 254 contacts the serrated protrusion 23 and drives the serrated protrusion 23 to move upward, thereby causing the serrated protrusion 23 to drive the conductive wire 4 to embed into the serrated groove 22. As the rotating plate 24 rotates, when the serrated protrusion 23 on one side rises to the limit position, it will compress the first spring 255, causing the slide plate 252 to move downward, thus preventing jamming.

[0027] It should be noted that the reference Figure 12The telescopic rod 25 at the end of the rotating plate 24 away from its rotation axis has a larger rotation radius. Compared with the telescopic rod 25 with a smaller rotation radius on the inner side, the telescopic rod 25 with a larger rotation radius on the outer side rises to a greater height when rotating at the same angle. This further causes the telescopic rod 25 on the side away from the rotation radius of the rotating plate 24 to push the serrated protrusion 23 to rise first, so that multiple serrated protrusions 23 can enter the serrated groove 22 in sequence.

[0028] The outer casing 1 is fixedly installed with a guide plate 111. One end of the guide plate 111 is located at the bottom of the connection hole 11, and the other end of the guide plate 111 extends to one side of the sawtooth reinforcement component 2. The guide plate 111 allows the conductive wire 4 to accurately enter between the sawtooth groove 22 and the sawtooth protrusion 23.

[0029] like Figures 7 to 13 As shown, in this embodiment, the outer shell 1 is provided with a receiving groove 26, the connecting plate 21 is slidably connected to the receiving groove 26, and a second spring 261 is fixedly installed between the connecting plate 21 and the receiving groove 26. When the outer shell 1 is affected by vibration or the conductive wire 4 is stretched, the connecting plate 21 can be moved, which can play a certain anti-vibration role and prevent the conductive wire 4 from loosening.

[0030] Furthermore, since the connecting plate 21 is allowed to shift to a certain extent when subjected to vibration, the serrated protrusion 23 and the rotating plate 24 also need to move to a certain extent along with the connecting plate 21. A connecting rod 231 is fixedly installed on the serrated protrusion 23, and a slide rail 232 is slidably installed on the connecting rod 231, allowing the serrated protrusion 23 to move in the direction of action. A support rod 233 is fixedly installed on the slide rail 232. A guide groove 234 is provided inside the outer casing 1, and the support rod 233 is slidably installed inside the guide groove 234, allowing the serrated protrusion 23 to move in the vertical direction. At this time, the serrated protrusion 23 can enter the serrated groove 22. A connecting groove 242 is provided inside the outer casing 1, and a rotating shaft 241 is slidably installed inside the connecting groove 242. The rotating plate 24 is rotatably connected to the rotating shaft 241, and the rotating plate 24 rotates around the rotating shaft 241 as the axis and can slide inside the connecting groove 242.

[0031] like Figure 14 and Figure 15As shown, in this embodiment, to facilitate easy installation without constantly pressing the latch 14 when inserting the conductive wire 4, an insertion hole 142 is provided on the latch 14. An insertion positioning module 3 is provided inside the latch 14. The insertion positioning module 3 includes an installation cavity 31 located inside the latch 14 and a limiting rod 32 installed within the installation cavity 31. The limiting rod 32 includes a limiting cylinder 321 fixedly installed inside the installation cavity 31 and a sealing plate 322 slidably and sealingly installed within the limiting cylinder 321. A limiting rod 323 is fixedly installed on the sealing plate 322. The limiting rod 323 passes through the bottom of the latch 14 and abuts against the surface of the outer shell 1. When the limiting rod 323 is moved outward and abuts against the outer shell 1, the limiting rod 323 is limited, so that the limiting rod 323 cannot move. At this time, under the support of the limiting rod 323, the spring piece 13 cannot drive the latch 14 to rotate, so that a certain gap is maintained between the serrated groove 22 and the serrated protrusion 23, which facilitates the insertion of the conductive wire 4.

[0032] Furthermore, the two sides of the limiting cylinder 321 are connected by a pipe 326. Both the pipe 326 and the limiting cylinder 321 are filled with hydraulic medium. A valve 33 is fixedly installed on the pipe 326. The hydraulic medium is a liquid that cannot be compressed under working conditions. When the valve 33 is open, the hydraulic medium on both sides will flow to each other when the sealing plate 322 is moved. At this time, the sealing plate 322 can move freely. When the valve 33 is closed, the hydraulic medium on both sides of the limiting cylinder 321 cannot flow. At this time, the sealing plate 322 cannot move, which in turn prevents the limiting rod 323 fixedly connected to it from moving, thereby enabling the limiting rod 323 to effectively support the latch 14.

[0033] The sealing plate 322 is fixedly equipped with a compensating rod 324, which passes through the top of the limiting cylinder 321 and extends to the outside of the limiting cylinder 321. A third spring 325 is fixedly installed between the compensating rod 324 and the limiting cylinder 321. The presence of the compensating rod 324 ensures that the hydraulic medium entering the bottom of the limiting cylinder 321 and the hydraulic medium leaving the top of the limiting cylinder 321 are in an equal quantity, so that there is no pressure difference on both sides of the sealing plate 322, which facilitates the smooth movement of the sealing plate 322. Under the action of the third spring 325, when the limiting rod 323 is not affected by external force, it will drive the limiting rod 323 to move downward, so that the limiting rod 323 always abuts against the outer shell 1.

[0034] like Figures 14 to 16As shown, in this embodiment, valve 33 includes a valve body 331 fixedly installed on pipe 326 and a valve core 332 slidably installed inside valve body 331. A fourth spring 333 is fixedly installed between valve core 332 and valve body 331. A round rod 334 is fixedly installed on valve core 332. The round rod 334 extends into insertion hole 142 and a disc 335 is fixedly installed thereon. When a finger pries the latch 14, the finger will be inserted into insertion hole 142. At this time, the finger will press against disc 335 and drive disc 335 to move inward. This will cause valve core 332 to move, thereby opening the valve. The valve body 331 allows the pipe 326 to flow freely. At this time, the sealing plate 322 can move freely. When the finger leaves the insertion hole 142, the valve core 332 will be reset under the action of the fourth spring 333, so that the valve core 332 blocks the valve body 331, thereby limiting the limit rod 323, which makes it easier to insert the conductive wire 4. After the insertion is completed, the finger presses the disc 335 inside the insertion hole 142, which releases the elastic force of the spring piece 13. Under the action of the elastic force of the spring piece 13, the serrated protrusion 23 is driven into the serrated groove 22, which locks the conductive wire 4.

[0035] In this embodiment, the operator rotates the latch 14 to engage the locking groove 141 with the locking block 131 on the spring piece 13, thereby compressing the spring piece 13 to store energy. When the conductive wire 4 is inserted into the device through the connection hole 11 and placed between the serrated groove 22 and the serrated protrusion 23, the valve 33 is opened by pressing the disc 335 of the insertion positioning module 3, releasing the limit rod 323. The elastic force of the spring piece 13 is released, pushing the rotating plate 24 to rotate around the rotating shaft 241. The rotating plate 24 is equipped with multiple wires with successively decreasing limit heights. The telescopic rods 25, each of which is contacted and pushed by the ball bearings 254 at the top of the pressure rod 253, move upward along the guide groove 234, thereby gradually pressing the conductive wire 4 into the sawtooth groove 22 from one side to the other, forming a sequential mechanical interlock. This process is buffered by the first spring 255 inside the telescopic rod 25 to prevent jamming. The connecting plate 21 is installed in the receiving groove 26 by the second spring 261, so that the entire sawtooth reinforcement component 2 has a certain shock resistance.

[0036] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A high-current terminal plug-in device, comprising a housing (1), a copper plate (12) fixedly installed inside the housing (1), a spring piece (13) installed inside the housing (1), and a latch (14) for compressing the spring piece (13), characterized in that, Also includes: The sawtooth reinforcement component (2) includes a connecting plate (21) installed inside the outer shell (1). The connecting plate (21) is provided with multiple sawtooth grooves (22). Multiple sawtooth protrusions (23) corresponding to the sawtooth grooves (22) are installed inside the outer shell (1). A rotating plate (24) is rotatably installed inside the outer shell (1). The spring plate (13) presses against the rotating plate (24). Multiple telescopic rods (25) corresponding to the sawtooth protrusions (23) are fixedly installed on the rotating plate (24). The length of the multiple telescopic rods (25) is telescopic and the maximum height decreases sequentially. Under the elastic force of the spring plate (13), the sawtooth reinforcement component (2) drives multiple sawtooth protrusions (23) to enter the sawtooth grooves (22) sequentially.

2. The high-current terminal plug-in device according to claim 1, characterized in that, The telescopic rod (25) includes a support cylinder (251) fixedly installed on the rotating plate (24), a sliding plate (252) slidably installed inside the support cylinder (251), and a pressure rod (253) fixedly installed on the sliding plate (252). A ball bearing (254) is rotatably installed at the top of the pressure rod (253), and a first spring (255) is fixedly installed between the sliding plate (252) and the support cylinder (251).

3. A high-current terminal plug-in device according to claim 2, characterized in that, The outer casing (1) is provided with a receiving groove (26), the connecting plate (21) is slidably connected to the receiving groove (26), and a second spring (261) is fixedly installed between the connecting plate (21) and the receiving groove (26).

4. A high-current terminal plug-in device according to claim 3, characterized in that, A connecting rod (231) is fixedly installed on the serrated protrusion (23), a slide rail (232) is slidably installed on the connecting rod (231), a support rod (233) is fixedly installed on the slide rail (232), a guide groove (234) is provided inside the outer shell (1), and the support rod (233) is slidably installed inside the guide groove (234).

5. A high-current terminal plug-in device according to claim 4, characterized in that, The outer casing (1) is provided with a connecting groove (242), and a rotating shaft (241) is slidably installed in the connecting groove (242). The rotating plate (24) is rotatably connected to the rotating shaft (241).

6. A high-current terminal plug-in device according to claim 5, characterized in that, One end of the spring piece (13) is provided with a snap-fit ​​block (131), the latch (14) is rotatably connected to the outer shell (1) and is provided with a snap-fit ​​groove (141), and the snap-fit ​​block (131) snaps into the snap-fit ​​groove (141).

7. A high-current terminal plug-in device according to claim 6, characterized in that, The outer shell (1) is provided with a connection hole (11), and a guide plate (111) is fixedly installed inside the outer shell (1). One end of the guide plate (111) is located at the bottom of the connection hole (11), and the other end of the guide plate (111) extends to one side of the sawtooth reinforcement component (2).

8. A high-current terminal plug-in device according to claim 7, characterized in that, The latch (14) is provided with a socket (142), and the latch (14) is provided with a plug-in positioning module (3). The plug-in positioning module (3) includes an installation cavity (31) located inside the latch (14) and a limiting rod (32) installed in the installation cavity (31).

9. A high-current terminal plug-in device according to claim 8, characterized in that, The limiting rod (32) includes a limiting cylinder (321) fixedly installed inside the mounting cavity (31), a sealing plate (322) slidably and sealed inside the limiting cylinder (321), and a limiting rod (323) fixedly installed on the sealing plate (322). The limiting rod (323) passes through the bottom of the buckle (14) and abuts against the surface of the outer shell (1). A compensating rod (324) is fixedly installed on the sealing plate (322). The compensating rod (324) passes through the top of the limiting cylinder (321) and extends to the outside of the limiting cylinder (321). A third spring (325) is fixedly installed between the compensating rod (324) and the limiting cylinder (321). The two sides of the limiting cylinder (321) are connected by a pipe (326). Both the pipe (326) and the limiting cylinder (321) are filled with hydraulic medium. A valve (33) is fixedly installed on the pipe (326).

10. A high-current terminal plug-in device according to claim 9, characterized in that, The valve (33) includes a valve body (331) fixedly installed on the pipeline (326) and a valve core (332) slidably installed inside the valve body (331). A fourth spring (333) is fixedly installed between the valve core (332) and the valve body (331). A round rod (334) is fixedly installed on the valve core (332). The round rod (334) extends into the socket (142) and a disc (335) is fixedly installed thereon.

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