A high voltage interlock connection assembly

Abstract

The application relates to the technical field of connectors, in particular to a high-voltage interlocking connecting assembly. The high-voltage interlocking connecting assembly comprises a plug shell, a socket shell and a screwing interlocking device, the socket shell is provided with a fixing hole, a helical groove is arranged on the inner wall of the fixing hole, the plug shell is provided with a through hole, one end of the screwing interlocking device is a screw cap, the other end is provided with a radial protrusion, the radial protrusion is assembled and connected with the helical groove and the plug shell and the socket shell cannot be separated; an interlocking loop is arranged in the fixing hole, an interlocking conductive part is arranged on the end face of the other end of the screwing interlocking device, when the screwing interlocking device is screwed, the interlocking conductive part is connected with the interlocking loop, when the screwing interlocking device is reversely loosened, the interlocking conductive part is axially separated from the interlocking loop, and the plug shell and the socket shell can be separated. The application avoids the hysteresis of the connection release signal in the prior art, and the safety performance is improved.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically, to a high-voltage interlocking connection assembly. Background Technology

[0002] High-voltage interlock structures are crucial signal structures in high-voltage connectors. They are used to detect correct connection of the high-voltage connector and to provide protection against electric shock during installation or maintenance. The basic principle of a high-voltage interlock structure is as follows: an interlock terminal is installed on one connector, such as a socket, with one end connected to an interlock signal line. An interlock pin is then installed on another adapter connector, such as a plug. After the plug and socket are connected, the interlock pin connects to the interlock terminal, thereby activating the interlock signal line and sending a signal to the relevant control system indicating that the plug and socket are correctly connected.

[0003] In some types of high-voltage connectors, the interlocking pin is integrally injection molded into the plug housing. The plug and socket are locked together by levers or other locking structures. When the plug and socket are connected, the connection between the interlocking pin and the interlocking terminal is later than the connection between the power terminals. When the plug and socket are separated, the separation between the interlocking pin and the interlocking terminal is earlier than the separation between the power terminals, thus meeting the design requirements of safety and timeliness. In other types of high-voltage connectors, the interlocking pin is located on a flip cover. After the plug and socket are connected, the flip cover is closed to connect the interlocking pin and the interlocking terminal. When disassembly or maintenance is required, the flip cover is opened to separate the interlocking pin from the interlocking terminal.

[0004] The above-mentioned types of high-voltage connectors all have the following problems: regardless of whether the connection between the plug and the socket is released first, or the closure of the flip cover is released first, the separation of the interlocking pin and the interlocking terminal occurs after the release action. In other words, the connection release signal of the existing high-voltage interlocking structure is delayed compared to the release action. Therefore, during the process when the release action begins but the connection release signal of the high-voltage interlocking structure is not issued due to the delay, the high-voltage connector is still in a live state, which may bring safety risks such as electric shock. Summary of the Invention

[0005] This invention provides a high-voltage interlock connection assembly to solve the problem of electric shock risk caused by the delayed occurrence of the high-voltage interlock structure connection release signal in the prior art.

[0006] This invention provides a high-voltage interlocking connection assembly, including a plug housing and a socket housing that are interlocked, and a tightening interlocking device. The socket housing has at least one fixing hole, and a spiral groove is provided on the inner wall of the end of the fixing hole facing the plug housing. A through hole is provided on the plug housing corresponding to the fixing hole. One end of the tightening interlocking device is a cap with a diameter larger than the through hole, and the other end has a radial protrusion. The tightening interlocking device passes through the through hole, and the radial protrusion is assembled with the spiral groove, preventing the plug housing and the socket housing from separating. An axially disconnected interlocking circuit is provided within the fixing hole. An interlocking conductive element is provided on the other end face of the tightening interlocking device. When the tightening interlocking device tightens and locks the plug housing and the socket housing, the interlocking conductive element connects to the interlocking circuit. When the tightening interlocking device is loosened in the opposite direction, it causes the interlocking conductive element to undergo axial displacement and disengage from the interlocking circuit, allowing the plug housing and the socket housing to separate.

[0007] Optionally, the plug housing includes a main housing and a flip cover hinged to the main housing. The flip cover closes the main housing after being flipped over. The through hole is provided on the main housing. The flip cover is provided with a mounting hole corresponding to the position of the through hole. The tightening interlocking device passes through the mounting hole and the through hole and is tightened to the fixing hole, so that the flip cover, the main housing and the socket housing cannot be separated.

[0008] Optionally, the tightening interlocking device includes a bolt, one end of which has a head for tightening forming the screw cap, and the other end has an external thread forming the radial protrusion, and the spiral groove is assembled with the external thread of the bolt.

[0009] Optionally, a rotating rod connected to the rotating cap and a fixed rod connected to the interlocking conductive element are further provided between the rotating cap and the interlocking conductive element. The ends of the rotating rod and the fixed rod adjacent to each other are rotatably connected and are provided with a stop structure to prevent the two from separating axially. The radial protrusion is provided on the end of the rotating rod near the fixed rod.

[0010] Optionally, one of the rotating rod and the fixed rod has a rotating hole extending along its axis on its end face, and a retaining edge extending radially inward at the port of the rotating hole. The other end of the rotating rod and the fixed rod has a protruding connector, and the connector has a groove extending circumferentially at the position corresponding to the retaining edge. The retaining edge and the groove engage to form the stopping structure.

[0011] Optionally, the connector is configured to rotate within the rotating hole.

[0012] Optionally, in one case, the sidewall of the rotating hole is provided with a plurality of first grooves in the axial direction to give the retaining edge an outward expansion elasticity. After the connector opens the retaining edge and enters the rotating hole, the retaining edge elastically recovers and engages with the groove.

[0013] Alternatively, in another case, the connector is provided with at least one through second groove in its radial direction to give the connector an inward compressibility. After compression, the connector enters the rotating hole and regains its elasticity, causing the retaining edge to engage with the groove.

[0014] Optionally, the radial cross-section of the fixing rod is non-circular, and the portion of the fixing hole between the helical groove and the interlocking circuit is adapted to the radial cross-sectional shape of the fixing rod to allow for axial sliding engagement with the fixing rod while preventing the fixing rod from rotating within the fixing hole.

[0015] Optionally, the interlocking conductive element includes a pin, and the interlocking circuit includes at least two interlocking terminals. The pin is inserted into at least two interlocking terminals to enable the interlocking conductive element to connect to the interlocking circuit.

[0016] Optionally, a sealing ring is provided between the cap and the plug housing.

[0017] Optionally, the interlocking conductive element is a metal post disposed on the other end face of the tightening interlocking device. The interlocking circuit includes at least two interlocking terminals, and the ends of the at least two interlocking terminals are provided with spring sheet structures. After the tightening interlocking device is tightened, the metal post and the spring sheet structures make elastic contact to realize the interlocking conductive element connecting the interlocking circuit.

[0018] Optionally, the end of the spiral groove away from the end face of the fixing hole is provided with a snap-fit ​​groove facing the end face of the fixing hole. When the radial protrusion is screwed into the bottom of the spiral groove, it is snapped into the snap-fit ​​groove, thereby preventing the radial protrusion from retracting along the spiral groove.

[0019] The present invention has the following beneficial effects:

[0020] 1. The tightening interlocking device provided in this invention can be assembled and connected to the socket housing through the through hole of the plug housing, making the plug housing and socket housing inseparable. The interlocking conductive element set on the tightening interlocking device can conduct the interlocking circuit in the fixing hole and send a signal that the plug and socket are correctly connected. Therefore, when it is necessary to disassemble the plug for maintenance or other operations, the tightening interlocking device must be loosened or removed in the reverse direction before the plug housing and socket housing can be separated. Loosening or removing the tightening interlocking device will simultaneously drive the interlocking conductive element to generate axial displacement and disengage from the interlocking circuit, causing the interlocking circuit to interrupt the correct connection signal, thereby causing power transmission interruption. In other words, the interlocking circuit interruption occurs before the plug housing and socket housing are separated, avoiding the lag in the connection release signal in the prior art, preventing the risk of electric shock from live operation of high-voltage connectors, and improving safety performance.

[0021] 2. In this invention, the interlocking conductive component is set on the end face of the tightening interlocking device and can follow the axial displacement of the tightening interlocking device. That is to say, the interlocking conductive component is directly driven by the tightening interlocking device, so the tightening or loosening of the tightening interlocking device can directly trigger the connection or interruption of the interlocking circuit, ensuring the timeliness and stability of the interlocking circuit generating or interrupting signals and preventing signal abnormalities.

[0022] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0024] Figure 1 This is a schematic diagram of the structure of the high-voltage interlock connection assembly;

[0025] Figure 2 for Figure 1 A partial sectional view of the central interlocking structure;

[0026] Figure 3 for Figure 2 A magnified view of the central insertion point;

[0027] Figure 4 A schematic diagram showing the state of the pins connected to the interlocking terminals (signal wires are not shown);

[0028] Figure 5 This is a schematic diagram of the tightening interlocking device;

[0029] Figure 6 This is a structural schematic diagram of the fixed rod and a partial sectional view of the corresponding end of the rotating rod;

[0030] Figure 7 This is a schematic diagram of the structure of Example 2;

[0031] Figure 8 This is a partial structural diagram of Example 3;

[0032] Figure 9 This is a partial structural diagram of Example 4.

[0033] The diagram is marked as follows:

[0034] Example 1:

[0035] 1. Plug housing; 11. Main housing; 111. Through hole; 12. Flip cover; 121. Mounting hole;

[0036] 2. Socket housing; 21. Fixing hole;

[0037] 3. Tightening interlocking device; 31. Bolt; 311. Screw cap; 312. Radial protrusion; 313. Rotating rod; 314. Stop; 315. Rotating hole; 32. Fixing rod; 321. Connector; 322. Second groove; 323. Groove; 324. Anti-rotation surface; 33. Pin; 34. Sealing ring;

[0038] 4. Interlocking terminals.

[0039] Example 2:

[0040] 5. Tightening interlocking device; 6. Plug housing 1; 7. Socket housing.

[0041] Example 3:

[0042] 8. Tightening interlocking device; 81. Metal column; 9. Interlocking terminal; 91. Spring piece structure.

[0043] Example 4:

[0044] 100. Spiral groove; 101. Snap-fit ​​groove; 102. Cylindrical rod; 103. Protrusion; 104. Fixing rod; 105. Fixing hole. Detailed Implementation

[0045] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0046] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0047] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0048] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0049] Example 1.

[0050] like Figure 1-6 As shown, the high-voltage interlocking connection assembly of this embodiment includes a plug housing 1 and a socket housing 2 that are plugged into each other, and a tightening interlocking device 3. The socket housing 2 is provided with a fixing hole 21. A spiral groove is provided on the inner wall of the end of the fixing hole 21 facing the plug housing 1. A through hole 111 is provided on the plug housing 1 at the position corresponding to the fixing hole 21. One end of the tightening interlocking device 3 is a screw cap 311 with a diameter larger than that of the through hole 111, and the other end is provided with a radial protrusion 312. The tightening interlocking device 3 passes through the through hole 111, and the radial protrusion 312 is assembled and connected with the spiral groove, making it impossible for the plug housing 1 and the socket housing 2 to be separated. An interlocking circuit is axially disconnected in the fixing hole 21. An interlocking conductive element is provided on the other end face of the tightening interlocking device 3. When the tightening interlocking device 3 is tightened and locks the plug housing 1 and the socket housing 2, the interlocking conductive element connects the interlocking circuit. When the tightening interlocking device 3 is loosened in the opposite direction, it causes the interlocking conductive element to generate axial displacement and disengage from the interlocking circuit, allowing the plug housing 1 and the socket housing 2 to be separated.

[0051] When this high-voltage interlock connection assembly requires disassembly of the plug for maintenance or other operations, the interlocking device 3 must first be loosened or removed in the reverse direction to disengage the plug housing 1 from the socket housing 2. Loosening or removing the interlocking device 3 will simultaneously cause the interlocking conductive component to undergo axial displacement and disengage from the interlocking circuit, interrupting the correct connection signal of the interlocking circuit and thus causing power transmission interruption. In other words, the interlocking circuit interruption occurs before the plug housing 1 separates from the socket housing 2, avoiding the lag in the connection release signal in the prior art and preventing the risk of electric shock from live operation of the high-voltage connector, thus improving safety performance. In addition, the interlocking conductive component is directly driven by the tightening interlocking device 3, so tightening or loosening the interlocking device 3 can directly trigger the connection or interruption of the interlocking circuit, ensuring the timeliness and stability of the interlocking circuit's signal generation or interruption and preventing signal abnormalities.

[0052] In other embodiments, the above-mentioned fixing holes and through holes are not limited to one; there may be two or more. Multiple sets of tightening interlocking devices, interlocking conductive parts, and interlocking circuits may also be provided.

[0053] Furthermore, specifically as follows Figure 1 , Figure 2 As shown, in order to facilitate the operation of the components inside the plug housing 1, the plug housing 1 includes a main housing 11 and a flip cover 12 hinged to the main housing 11. After the flip cover 12 is flipped, it closes the main housing 11. A through hole 111 is provided on the main housing 11. The flip cover 12 is provided with a mounting hole 121 corresponding to the position of the through hole 111. After the tightening interlocking device 3 passes through the mounting hole 121 and the through hole 111, it is tightened and connected to the fixing hole 21, so that the flip cover 12, the main housing 11 and the socket housing 2 cannot be separated.

[0054] Furthermore, specifically as follows Figure 2 , Figure 5 and Figure 6 As shown, in order to ensure that the tightening interlocking device 3 can smoothly drive the interlocking conductive component to move axially, a rotating rod 313 connected to the rotating cap 311 and the interlocking conductive component are also provided between the rotating cap 311 and the interlocking conductive component, and a fixed rod 32 connected to the interlocking conductive component. The ends of the rotating rod 313 and the fixed rod 32 are rotatably connected and are provided with a stop structure to prevent the two from separating axially. A radial protrusion 312 is provided on the end of the rotating rod 313 near the fixed rod 32.

[0055] Furthermore, specifically as follows Figure 6 As shown, in order to make the axial displacement drive of the fixed rod 32 and the rotating rod 313 more stable and the connection structure more reasonable, the end face of the rotating rod 313 is provided with a rotating hole 315 extending along its axis, and the port of the rotating hole 315 is provided with a retaining edge 314 extending radially inward. The end of the fixed rod 32 is provided with a protruding connector 321, and the connector 321 is provided with a groove 323 extending circumferentially at the position corresponding to the retaining edge 314. The retaining edge 314 and the groove 323 are engaged to form a blocking structure.

[0056] In other embodiments, the rotating hole can also be provided on the fixed rod, and correspondingly, the connector is provided on the rotating rod. The stopping structure can also be other structures that can prevent the rotating rod and the fixed rod from axially separating, such as magnets that can attract each other at the ends of the rotating rod and the fixed rod. That is, magnets that attract each other are provided at the ends of the fixed rod and the rotating rod, which can not only satisfy the rotational connection between the two in the fixed hole, but also prevent the two from separating axially in the fixed hole. However, it should be noted that the attraction between the magnets needs to be greater than the resistance when the interlocking conductive part and the interlocking circuit are separated. The stopping structure can also be a ring provided on the periphery of one end of the fixed rod and the rotating rod, and multiple claws on the periphery of the other end. The claws extend toward the ring and axially lock the ring so that the fixed rod and the rotating rod cannot be separated axially. However, the ring can rotate within the space enclosed by the claws so that the fixed rod and the rotating rod can rotate relative to each other. This structure is a conventionally achievable technology, so it will not be described in detail.

[0057] Furthermore, specifically as follows Figure 6As shown, in order to enable the fixed rod 32 and the rotating rod 313 to rotate smoothly relative to each other, the connector 321 is constructed to rotate within the rotating hole 315, and the end of the connector 321 is optimized to be a hemispherical structure.

[0058] Furthermore, specifically as follows Figure 6 As shown, in order to allow the connector 321 to smoothly pass over the retaining edge 314 and enter the rotating hole 315, the connector 321 is provided with at least one through second groove 322 in its radial direction, so that the connector 321 has the elasticity of inward compression. After the connector 321 is compressed, it enters the rotating hole 315 and restores its elasticity, and the retaining edge 314 is engaged with the groove 323.

[0059] In other embodiments, multiple first grooves may be provided on the sidewall of the rotating hole along the axial direction to give the retaining edge an outward expansion elasticity. After the connector opens the retaining edge and enters the rotating hole, the retaining edge elastically recovers and engages with the groove.

[0060] Furthermore, specifically as follows Figures 3-6 As shown, in order to make the connection and separation of the interlocking conductive component and the interlocking circuit more stable, the radial cross section of the fixing rod 32 is a non-circular structure. The part of the fixing hole 21 between the spiral groove and the interlocking circuit is adapted to the radial cross section shape of the fixing rod 32 so as to slide with the fixing rod 32 axially while preventing the fixing rod 32 from rotating in the fixing hole 21.

[0061] In this embodiment, the cylindrical structure is cut with an anti-rotation surface 324 along a direction parallel to its axial section to form the aforementioned fixing rod 32, thus resulting in a non-circular radial cross-section. In other embodiments, the fixing rod can also be a cuboid with a square cross-section, which is also a non-circular structure. Other shapes suitable for the functions and purposes of this solution will not be listed in detail.

[0062] Furthermore, such as Figure 2 and Figure 5 As shown, in order to facilitate processing and manufacturing, reduce costs, and ensure a stable connection effect, in this embodiment, the tightening interlocking device 3 includes a bolt 31, which is relatively mature in processing and manufacturing and has a low cost. One end of the bolt 31 has a head for screwing that forms a screw cap 311, and the external thread at the other end forms a radial protrusion 312. The spiral groove is assembled and connected with the external thread of the bolt 31. The shank of the bolt 31 where the external thread is located forms a rotating rod 313 connected to the screw cap 311. The aforementioned rotating hole 315 is provided on the end face of the end of the bolt 31 with the external thread.

[0063] Furthermore, to prevent leakage, in this embodiment, the bolt 31 is made of an insulating material such as plastic, and the fixing rod 32 is also made of an insulating material such as plastic.

[0064] Furthermore, in this embodiment, in order to ensure good connectivity, the interlocking conductive component includes a U-shaped pin 33, the interlocking circuit includes two interlocking terminals 4, and the two interlocking terminals 4 are connected to signal wires respectively. The pin 33 is inserted into the two interlocking terminals 4 to realize the interlocking conductive component connecting the interlocking circuit. The pin 33 is pre-embedded and injection molded at the end of the fixing rod 32.

[0065] In other embodiments, the number of interlocking terminals can be adjusted as needed, and the structure and number of the corresponding pins can also be adjusted accordingly.

[0066] Furthermore, in order to ensure sealing performance, a sealing ring 34 is provided between the swivel cap 311 and the plug housing 1. In this embodiment, the sealing ring 34 is located between the swivel cap 311 and the flip cover 12.

[0067] During installation, first connect the fixing rod 32 to the bolt 31. Then, after connecting the main housing 11 to the socket housing 2 and related power terminals, flip the cover 12 to close the main housing 11. Insert the combination of fixing rod 32 and bolt 31 into the mounting hole 121 and through hole 111. Tighten the bolt 31 so that its external thread connects with the thread groove of the fixing hole 21 until the pin 33 is inserted into the interlock terminal 4 and the main housing 11 and socket housing 2 are locked. Thus, the conduction signal of the interlock circuit occurs after the cover 12 is closed, which ensures high safety.

[0068] When unlocking, loosen bolt 31. During the retraction of bolt 31, the fixing rod 32 and pin 33 are axially displaced until pin 33 is separated from interlock terminal 4. Continue to loosen bolt 31 to disengage it from fixing hole 21. At this time, the combination of bolt 31 and fixing rod 32 can be pulled out from through hole 111 and mounting hole 121, and flip cover 12 can be flipped open. Thus, the interruption signal of interlock circuit occurs before flip cover 12 is opened, which ensures high safety.

[0069] The following describes other embodiments that differ from Embodiment 1 in their local structure.

[0070] Example 2.

[0071] like Figure 7 As shown, in this embodiment, the flip cover and its mounting holes are omitted, and the interlocking device 5 is tightened to directly lock the plug housing 6 and the socket housing 7 together. Other structures are the same as in Embodiment 1.

[0072] Example 3.

[0073] like Figure 8As shown, in this embodiment, in order to simplify the structure, the interlocking conductive component is a metal post 81 directly set on the end face of the tightening interlocking device 8 away from the screw cap. The interlocking circuit includes two interlocking terminals 9, and the ends of the two interlocking terminals 9 are provided with spring sheet structures 91. After the tightening interlocking device 8 is tightened, the metal post 81 and the spring sheet structure 91 make elastic contact to realize the connection of the interlocking conductive component to the interlocking circuit.

[0074] The number of interlock terminals 9 mentioned above can be increased according to actual needs.

[0075] Example 4.

[0076] like Figure 9 As shown, in order to make the axial displacement distance of the tightening interlock device greater when rotating at the same angle, so that the interlocking conductive component can connect to or separate from the interlocking circuit more quickly, the spiral groove 100 is designed as a thread structure with a larger pitch. The spiral groove 100 can be set as single-strand, double-strand, or multi-strand depending on the situation. In this embodiment, the spiral groove 100 is double-strand.

[0077] In this embodiment, the tightening interlocking device includes a screw cap and a cylindrical rod 102 connected to the screw cap. The end of the cylindrical rod 102 away from the screw cap is rotatably provided with a fixing rod 104, which is the same as in Embodiment 1. The radial protrusion is a protrusion 103 provided on the periphery of the end of the cylindrical rod 102 away from the screw cap and distributed along a path that is helically adapted to the spiral groove 100. The protrusion 103 has a conical structure. The screw cap, the cylindrical rod 102 and the protrusion 103 are integrally injection molded from an insulating material such as plastic.

[0078] In this embodiment, a snap-fit ​​groove 101 is provided at one end of the spiral groove 100 away from the end face of the fixing hole 105, facing the end face of the fixing hole 105. When the radial protrusion, i.e. the protrusion 103, is screwed into the bottom of the spiral groove 100, it is snapped into the snap-fit ​​groove 101, thereby preventing the protrusion 103 from retracting along the spiral groove 100 in the opposite direction and preventing the tightening interlocking device from easily loosening and retracting.

[0079] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A high-voltage interlocking connection assembly, comprising a plug housing and a socket housing that are interlocked, and a tightening interlocking device, characterized in that, The socket housing is provided with at least one fixing hole. The inner wall of the fixing hole facing the end of the plug housing is provided with a spiral groove. The plug housing is provided with a through hole corresponding to the fixing hole. One end of the tightening interlocking device is a screw cap with a diameter larger than the diameter of the through hole, and the other end is provided with a radial protrusion. The tightening interlocking device passes through the through hole. The radial protrusion is assembled and connected with the spiral groove, making the plug housing and the socket housing inseparable. An axially disconnected interlocking circuit is provided within the fixing hole. An interlocking conductive element is provided on the other end face of the tightening interlocking device. When the tightening interlocking device tightens and locks the plug housing and the socket housing, the interlocking conductive element connects to the interlocking circuit. When the tightening interlocking device is loosened in the reverse direction, it causes the interlocking conductive element to undergo axial displacement and disengage from the interlocking circuit, thereby separating the plug housing and the socket housing. Between the rotating cap and the interlocking conductive component, a rotating rod connected to the rotating cap and a fixed rod connected to the interlocking conductive component are also provided. The ends of the rotating rod and the fixed rod adjacent to each other are rotatably connected and are provided with a stop structure to prevent the two from separating axially. The radial protrusion is provided on the end of the rotating rod near the fixed rod.

2. The high-voltage interlock connection assembly as described in claim 1, characterized in that, The plug housing includes a main housing and a flip cover hinged to the main housing. The flip cover closes the main housing after being flipped. A through hole is provided on the main housing. The flip cover has a mounting hole corresponding to the position of the through hole. The tightening interlocking device passes through the mounting hole and the through hole and is tightened to the fixing hole, making the flip cover, the main housing and the socket housing inseparable.

3. The high-voltage interlock connection assembly as described in claim 1, characterized in that, The tightening interlocking device includes a bolt, one end of which has a head for tightening forming the screw cap, and the other end has an external thread forming the radial protrusion. The spiral groove is assembled and connected to the external thread of the bolt.

4. A high-voltage interlock connection assembly as described in claim 1, characterized in that, One of the rotating rods and the fixed rod has a rotating hole extending along its axis on its end face. The port of the rotating hole has a retaining edge extending radially inward. The other end of the rotating rod and the fixed rod has a protruding connector. The connector has a groove extending circumferentially at the position corresponding to the retaining edge. The retaining edge and the groove engage to form the stopping structure.

5. A high-voltage interlock connection assembly as described in claim 4, characterized in that, The connector is configured to rotate within the rotating hole.

6. A high-voltage interlock connection assembly as described in claim 4, characterized in that, The sidewall of the rotating hole is provided with a plurality of first grooves along the axial direction so that the retaining edge has an outward expansion elasticity. After the connector opens the retaining edge and enters the rotating hole, the retaining edge elastically recovers and engages with the groove.

7. A high-voltage interlock connection assembly as described in claim 4, characterized in that, The connector is provided with at least one through second groove in its radial direction to give the connector an inward compressibility. After compression, the connector enters the rotating hole and regains its elasticity, and the retaining edge engages with the groove.

8. A high-voltage interlock connection assembly as described in claim 1, characterized in that, The radial cross-section of the fixing rod is non-circular. The portion of the fixing hole between the spiral groove and the interlocking circuit is adapted to the radial cross-sectional shape of the fixing rod to allow for axial sliding cooperation with the fixing rod while preventing the fixing rod from rotating within the fixing hole.

9. A high-voltage interlock connection assembly as described in claim 1, characterized in that, The interlocking conductive element includes a pin, and the interlocking circuit includes at least two interlocking terminals. The pin is inserted into at least two interlocking terminals to enable the interlocking conductive element to connect to the interlocking circuit.

10. A high-voltage interlock connection assembly as described in claim 1, characterized in that, A sealing ring is provided between the cap and the plug housing.

11. A high-voltage interlock connection assembly as described in claim 1, characterized in that, The interlocking conductive element is a metal post disposed on the other end face of the tightening interlocking device. The interlocking circuit includes at least two interlocking terminals, and the ends of the at least two interlocking terminals are provided with spring sheet structures. After the tightening interlocking device is tightened, the metal post and the spring sheet structures make elastic contact to realize the interlocking conductive element connecting the interlocking circuit.

12. A high-voltage interlock connection assembly as described in claim 1, characterized in that, The end of the spiral groove away from the end face of the fixing hole is provided with a snap-fit ​​groove facing the end face of the fixing hole. When the radial protrusion is screwed into the bottom of the spiral groove, it is snapped into the snap-fit ​​groove, thereby preventing the radial protrusion from retracting along the spiral groove.

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