A high-voltage connector with secondary unlocking function

Abstract

The present invention discloses a high-voltage connector with a secondary unlocking function, comprising a socket assembly and a plug assembly. An unlocking plate capable of generating torsional motion is mounted on the upper surface of the plug housing. A sliding space is defined between the lower surface of the unlocking plate and the upper surface of the plug housing, within which a locking block is disposed to limit the torsion of the unlocking plate. The locking block is provided with a tool slot, which can only be pulled and slid until it is released from the sliding space by inserting a specific tool compatible with the tool slot into the tool slot. The beneficial effects of the present invention are primarily reflected in the following aspects: A specific tool must be inserted into the tool slot before the locking block can be pulled and slid until it is released from the sliding space, thereby increasing safety; At the same time, the unlocking plate is subjected to force to generate torsional motion, completing the secondary unlocking operation and achieving separation of the socket assembly and the plug assembly. The operation is simple, convenient, stable, and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a safe and reliable high-voltage connector with a secondary unlocking function. Background Art

[0002] With the popularization of new energy vehicles and the gradual improvement of requirements for electric vehicles, the requirements for automotive high-voltage interlocking connectors are also getting higher and higher. Many automotive high-voltage connector manufacturers are innovating high-voltage interlocking connectors to make the connectors have more and more reliable functions in order to keep up with the rapid development of the new energy vehicle industry.

[0003] Traditional high-voltage interlock connectors do not take into account the time interval between the disconnection of the interlock signal circuit and the power circuit when unlocking. During the process of connector unlocking and pulling, the connector may be pulled out while energized. This phenomenon can cause erosion of contacts and even connectors, causing damage to vehicles and operators.

[0004] For example, authorization publication number CN103066451B discloses a connector and plug with a two-stage separation function. The connector comprises a plug and a socket, the plug comprising a plug housing, a plug power contact, and a plug control contact, and the socket comprising a socket housing, a socket power contact, and a socket control contact. The top of the plug housing is provided with a primary and secondary hook, each forming a seesaw structure on the top of the plug housing, with the hook portion of the secondary hook located behind the hook portion of the primary hook. A hanging block is provided on the top of the socket housing. When the primary hook is engaged with the hanging block, the plug power contact engages with the socket power contact, and the plug control contact is separated from the socket control contact. When the secondary hook is engaged with the hanging block, the plug power contact engages with the socket power contact, and the plug control contact engages with the socket control contact. However, in this connector, the pressing portions of the primary and secondary hooks are located on the same side, and the secondary hook is located within the inner hole of the primary hook. This makes it easy for an operator to press both of them together, allowing the plug to be directly pulled out of the socket, thus losing the two-stage unlocking effect and posing a significant safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-voltage connector with a secondary unlocking function.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A high-voltage connector with a secondary unlocking function includes a socket assembly and a plug assembly adapted to mate therewith, the socket assembly including a socket housing and a positioning block disposed thereon, the socket housing being provided with a socket power terminal and a socket signal terminal, the plug assembly including a plug housing being provided with a plug power terminal and a plug signal terminal that are respectively mated with the socket power terminal and the socket signal terminal to complete electrical connection;

[0008] Support plates are provided on both sides of the upper surface of the plug housing, and a torsion rod extends inwardly from the support plate. An unlocking plate is mounted in the space enclosed by the support plate, and its middle end is connected to the support plate via the torsion rod so that the unlocking plate can generate torsional movement around the axis of the torsion rod; the unlocking plate is divided by the torsion rod into a pressing portion and a functional portion at both ends, respectively, and a stopper is fixed on the lower surface of the functional portion, which can generate a limiting effect between the stopper and the positioning block to prevent relative displacement between the socket assembly and the plug assembly;

[0009] A sliding space is defined between the lower surface of the unlocking plate and the upper surface of the plug housing, wherein a locking block is provided directly below the pressing portion and used to restrict the pressing portion from moving downward. A tool slot is defined on the locking block, and only a specific tool compatible with the tool slot can be inserted into the tool slot to pull the locking block to slide until it is released from the sliding space, and the pressing portion can be forced to move downward.

[0010] The connector has a fully locked state, a first unlocked state, and a fully unlocked state;

[0011] When the connector is in a fully locked state, the locking block is placed directly below the pressing portion, and the unlocking plate is restricted by the locking block and cannot form a twisting motion;

[0012] When the connector is in the first unlocking state, the locking block is disengaged from the sliding space under the action of the specific tool;

[0013] When the connector is in a fully unlocked state, the unlocking plate is twisted by force, the stopper and the positioning block are disengaged, and the plug assembly is separated from the socket assembly.

[0014] Preferably, the plug-in joint width of the socket signal terminal and the plug signal terminal is smaller than the plug-in joint width of the socket power terminal and the plug power terminal;

[0015] During the process of separating the plug assembly from the socket assembly, the plug power terminals, the plug signal terminals, the socket power terminals and the socket signal terminals have two separation states;

[0016] When in the first separation state, the socket signal terminal and the plug signal terminal are disengaged, and the socket power terminal and the plug power terminal are still in the plugged state;

[0017] When in the secondary separation state, the socket power terminal and the plug power terminal are disconnected.

[0018] Preferably, the positioning block and the stop block are both in the shape of a right-angled triangle, the first vertical surface of the positioning block is arranged to face away from the plug assembly, and the stop block is provided with a second vertical surface. When the connector is in a fully locked state and a first unlocked state, the first vertical surface and the second vertical surface are in close contact.

[0019] Preferably, a limit block is fixed on the upper surface of the socket shell, and the limit block is located on the outside of the positioning block; a rocker is fixed in the middle of the locking block, and a card block is fixed on the lower surface of the rocker. When the connector is in a fully locked state, the card block is placed in the groove formed by the limit block and the positioning block.

[0020] Preferably, a fixing block is fixed on the upper surface of the plug housing, and a supporting block is fixed on the lower surface of the rocker. The supporting block is located between the locking block and the tool slot. When the connector is in a fully locked state, the supporting block is placed in the receiving groove formed by the limit block and the fixed block.

[0021] Preferably, a guide bar is fixedly provided on the upper surface of the plug housing, the central axis of the guide bar is parallel to the central axis of the plug housing, and a guide groove adapted to the guide bar is formed at the bottom of the locking block.

[0022] Preferably, support plates are fixed on both sides of the locking block, arc-shaped blocks are fixed on the side walls of the support plates, and two slots adapted to the arc-shaped blocks are provided on the support plate, and the distance between the slots is greater than the length of the upper bottom of the limit block.

[0023] Preferably, a sliding groove is provided on the support plate, and a sliding block adapted to the sliding groove is provided on the support plate, and the sliding block at least partially extends and is placed in the sliding groove.

[0024] Preferably, a guide bar is fixed on the socket housing, and the outer side surface of the guide bar is in close contact with the inner side surface of the support plate.

[0025] Preferably, the locking block and the unlocking plate have markings on their surfaces.

[0026] The beneficial effects of the present invention are mainly reflected in:

[0027] The present invention requires a specific tool inserted into the tool slot to pull the locking block and slide it until it clears the sliding space. At this point, the unlocking plate completes the initial unlocking, and only then can it be twisted to complete the unlocking operation. This design is simple, convenient, stable, and reliable, and it prevents the plug assembly from separating from the receptacle assembly due to misoperation. Furthermore, when the plug assembly is disconnected, the receptacle signal terminals always disconnect from the plug signal terminals first, eliminating the possibility of disconnecting the connector while it is powered on, thereby maximizing safety.

[0028] The second unlocking is completed by two components, the locking block and the unlocking plate, which further improves safety and prevents operational errors;

[0029] The clamping block acts as a limiter for the locking block, preventing it from sliding freely on the plug housing. Furthermore, the isosceles trapezoidal shape of the clamping block and the limit block guides the limit block during assembly, preventing hard interference and extending service life.

[0030] The rational layout of the sliding block and the sliding groove can provide axial guidance for the sliding of the locking block. At the same time, the setting of the guide strip not only provides axial guidance for the locking block, but also prevents the locking block from moving radially, thus maximizing the stability and accuracy of the assembly.

[0031] The arc block can be selectively positioned on the card slot to accurately lock the locking block, avoid any sliding during the assembly of the socket component and the plug component, and improve accuracy.

[0032] The numbers displayed on the lock block and unlock plate represent the operation sequence, and the operation is performed by displaying the numbers, which improves operability.

[0033] The present invention is assembled in a splicing manner, and each component can be quickly disassembled and assembled and conveniently replaced, thereby enhancing the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0035] Figure 1 : A perspective view of a preferred embodiment of the present invention;

[0036] Figure 2 : A perspective view of a plug housing in a preferred embodiment of the present invention;

[0037] Figure 3 : A three-dimensional view of the locking block and its upper components in a preferred embodiment of the present invention;

[0038] Figure 4 : A three-dimensional diagram of a socket housing in a preferred embodiment of the present invention;

[0039] Figure 5 : A cross-sectional view of a preferred embodiment of the present invention in a fully locked state;

[0040] Figure 6 : A cross-sectional view of a preferred embodiment of the present invention in an unlocked state;

[0041] Figure 7 : A cross-sectional view of a preferred embodiment of the present invention in a fully unlocked state. DETAILED DESCRIPTION

[0042] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] like Figures 1 to 7 As shown, the present invention discloses a high-voltage connector with a secondary unlocking function, including a socket assembly 1 and a plug assembly 2 adapted to be plugged therewith. Like the prior art, the socket assembly 1 includes a socket housing 11, in which a socket power terminal and a socket signal terminal are provided. The plug assembly 2 includes a plug housing 21, in which a plug power terminal and a plug signal terminal are provided, which are respectively connected to the socket power terminal and the socket signal terminal to complete electrical connection. A tail cover 8 is provided at the end of the plug housing 21 for fixing the cable so that it is electrically connected to the plug power terminal. The functions of the socket power terminal, socket signal terminal, plug power terminal, plug signal terminal and cable are consistent with those of the prior art and will not be repeated; their positions can be adapted and set as needed and are not within the scope of protection of the present invention.

[0046] In the present invention, when the receptacle assembly 1 and plug assembly 2 are separated, the distance between the receptacle signal terminals and the plug signal terminals is greater than the distance between the receptacle power terminals and the plug power terminals. When the receptacle assembly 1 and the plug assembly 2 are mated, the mating width between the receptacle signal terminals and the plug signal terminals is less than the mating width between the receptacle power terminals and the plug power terminals. Specifically, when the receptacle power terminals and the plug power terminals are initially mated, a gap exists between the receptacle signal terminals and the plug signal terminals; when the receptacle power terminals and the plug power terminals are mated a second time, the receptacle signal terminals and the plug signal terminals are mated.

[0047] In this application, support plates 22 are provided on both sides of the upper surface of the plug housing 21. A torsion bar 23 extends inward from the support plate 22. An unlocking plate 24 is mounted within the space enclosed by the support plate 22. Its middle end is connected to the support plate 22 via the torsion bar 23, allowing the unlocking plate 24 to twist about the axis of the torsion bar 23. The unlocking plate 24 is divided by the torsion bar 23 into a pressing portion 26 and a functional portion 25 at either end. In this embodiment, the pressing portion 26 and the functional portion 25 are rectangular, making them easier for the operator to press. Of course, the pressing portion 26 and the functional portion 25 may also have other shapes and can be adjusted according to actual conditions.

[0048] The socket assembly 1 includes a socket housing 11 and a positioning block 12 arranged thereon. A stop block 251 is fixedly provided on the lower surface of the functional part 25. The stop block 251 can produce a limiting effect between the positioning block 12 so that relative displacement cannot occur between the socket assembly 1 and the plug assembly 2.

[0049] A sliding space 27 is defined between the lower surface of the unlocking plate 24 and the upper surface of the plug housing 21. A locking block 3 is positioned directly below the pressing portion 26 to limit its downward movement. The height of the locking block 3 matches the height of the sliding space 27. The locking block 3 has a tool slot 31 defined therein. This slot 31 can only be used to slide the locking block 3 until it clears the sliding space 27 by inserting a tool compatible with the tool slot 31. At this point, the pressing portion 26 is pressed, causing it to move downward under the pressure.

[0050] In this preferred embodiment, the tool slot 31 is rectangular, and the specific tool has a rectangular block that fits within the tool slot 31. The rectangular block can be inserted into the tool slot 31, so that pulling the specific tool can slide the locking block 3. Of course, the tool slot 31 can also have other shapes, such as arc, triangle, wedge, etc., and the specific tool has an inserting portion that fits within the tool slot 31.

[0051] In addition, in this preferred embodiment, the tail cover 8 has a limiting rod 81, which is located directly above the locking block 3. The distance between the outer end surface 30 of the locking block 3 away from one end of the socket assembly 1 and the limiting rod 81 is less than 3 cm, preferably less than 2 cm, and the tool groove 31 is opened on the locking block 3 between the outer end surface 30 and the limiting rod 81.

[0052] As we all know, the length of one section of an adult's finger is about 3 cm, and the distance between the outer end surface 30 of the present application and the limit rod 81 is less than 3 cm, which can prevent the locking block 3 from sliding out of the sliding space 27 due to manual pulling, thereby eliminating misoperation to the greatest extent and improving safety.

[0053] Specific as Figure 5 As shown, at this time, the connector is in a completely locked state, that is, the stop block 251 abuts against the positioning block 12, the locking block 3 is placed directly below the pressing portion 26, and the unlocking plate 24 is restricted by the locking block 3 and cannot form a torsional movement.

[0054] Specific as Figure 6 As shown, at this time, the connector is in the first unlocking state, and the locking block 3 must be released from the sliding space 27 under the action of the specific tool.

[0055] Specific as Figure 7 As shown, at this time, the connector is in a fully unlocked state. Pressing on the pressing portion 26 causes the unlocking plate 24 to twist under force, disengaging the stopper 251 and the positioning block 12, and the plug assembly 2 is separated from the socket assembly 1. During the process of separating the plug assembly 2 from the socket assembly 1, the plug power terminals, plug signal terminals, socket power terminals, and socket signal terminals have two separation states. In the first separation state, the socket signal terminals and the plug signal terminals are disengaged, and the socket power terminals and the plug power terminals are still in the plugged state. In the second separation state, the gap between the socket signal terminals and the plug signal terminals increases, and the socket power terminals and the plug power terminals are disengaged.

[0056] The present invention has and only uses a specific tool inserted into the tool slot 31 to pull the locking block 3 to slide until it is out of the sliding space 27, so it is safe and reliable.

[0057] When the unlocking plate 24 is pressed, the unlocking plate 24 is twisted under force, the stop block 251 and the positioning block 12 are disengaged, and the plug assembly 2 is separated from the socket assembly 1. During the separation process, the socket signal terminal and the plug signal terminal are disengaged first, and the socket power terminal and the plug power terminal are disengaged later. This design not only avoids the occurrence of misoperation, but also when the plug assembly is disengaged, the socket signal terminal and the plug signal terminal are always disengaged first, eliminating the phenomenon of the connector being unplugged while powered, thereby maximizing safety.

[0058] In this embodiment, the positioning block 12 and the stop block 251 are both in the shape of a right triangle. The first vertical surface 122 of the positioning block 12 is set back to the plug assembly 2, and the stop block 251 is provided with a second vertical surface. When the connector is in a fully locked state and a first unlocked state, the first vertical surface 122 and the second vertical surface are in close contact, which can play a limiting role and prevent the unlocking plate from moving axially in the event of misoperation.

[0059] Furthermore, the inner side of the positioning block 12 is provided with a first inclined surface 121 facing the plug assembly 2, and the stopper 251 has an inclined second inclined surface 252. During assembly, the second inclined surface 252 can be in close contact with the first inclined surface 121. The arrangement of the first and second inclined surfaces can guide the connector during assembly, improving assembly convenience.

[0060] Furthermore, a limit block 13 is fixedly provided on the upper surface of the socket housing 11, and the limit block 13 is located outside the positioning block 12. Guide bars 14 are fixedly provided on both sides of the limit block 13, and the outer side surfaces of the guide bars 14 are in close contact with the inner side surface of the support plate 22. A rocker 32 is fixedly provided in the middle of the locking block 3, and a clamping block 33 is fixedly provided on the lower surface of the rocker 32. The clamping block 33 can be placed in the groove formed by the limit block 13 and the positioning block 12. The provision of the clamping block 33 can limit the locking block 3, preventing the locking block 3 from sliding freely on the plug housing 21.

[0061] In this preferred embodiment, both the stopper 13 and the clamping block 33 are in the shape of an isosceles trapezoid. Of course, other configurations are also possible and fall within the scope of protection of the present invention. The isosceles trapezoid shape is preferred because it can guide the stopper 13 during assembly, avoiding hard interference and extending service life.

[0062] In the present invention, the support plate 22 is provided with a sliding groove 222, and the support plate 36 is provided with a sliding block 38 adapted to the sliding groove 222. The sliding block 38 at least partially extends into the sliding groove 222. The above arrangement is reasonable, and the sliding block 38 and the sliding groove 222 cooperate to provide axial guidance for the sliding of the locking block 3.

[0063] Furthermore, the locking block 3 is secured to both sides with support plates 36, each with an arc-shaped block 37 secured to its sidewalls. The support plate 22 is provided with two slots 221 that mate with the arc-shaped blocks 37, with the distance between the slots 221 being greater than the length of the upper base of the stop block 13. The arc-shaped block 37 can be selectively positioned within one of the slots 221 to precisely lock the locking block 3, preventing any slippage during assembly of the socket and plug assemblies and improving accuracy. Furthermore, a fixing block 28 is secured to the upper surface of the plug housing 21, and a support block 34 is secured to the lower surface of the rocker plate 32. The support block 34 is positioned between the locking block 33 and the tool slot 31 and can be placed within the receiving groove formed by the stop block 13 and the fixing block 28. The provision of the fixing block 28 prevents the locking block 3 from falling off the socket housing 11, greatly enhancing the convenience of subsequent assembly.

[0064] A guide bar 29 is fixedly provided on the upper surface of the plug housing 21, with the central axis of the guide bar 29 being parallel to the central axis of the plug housing 21. A guide groove 35 is defined at the bottom of the locking block 3 to mate with the guide bar 29. The provision of the guide bar 29 provides axial guidance for the locking block 3 and prevents radial movement of the locking block, thereby maximizing assembly stability and accuracy.

[0065] In the present invention, markings 9 are located on the surfaces of the locking block 3 and the unlocking plate 24. The locking block 3 displays the number 1, while the unlocking plate 24 displays the number 2. The numbers 1 and 2 represent the sequence of operations, and operating the system using the displayed numbers improves operability. Furthermore, the present invention utilizes a splicing assembly method, allowing for quick assembly and disassembly, as well as convenient replacement of components, enhancing ease of use.

[0066] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0067] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-voltage connector with a secondary unlocking function, comprising a socket assembly (1) and a plug assembly (2) adapted to be plugged therewith, characterized in that: The socket assembly (1) comprises a socket housing (11) and a positioning block (12) arranged thereon, wherein the socket housing (11) is provided with a socket power terminal and a socket signal terminal, and the plug assembly (2) comprises a plug housing (21), wherein the plug housing (21) is provided with a plug power terminal and a plug signal terminal which are respectively docked with the socket power terminal and the socket signal terminal to complete electrical connection; Support plates (22) are provided on both sides of the upper surface of the plug housing (21), and a torsion bar (23) extends inward from the support plate (22). An unlocking plate (24) is mounted in the space enclosed by the support plate (22), and its middle end is connected to the support plate (22) through the torsion bar (23) so that the unlocking plate (24) generates a torsional motion around the axis of the torsion bar (23); the unlocking plate (24) is divided by the torsion bar (23) into a pressing portion (26) and a functional portion (25) at both ends, and a stopper (251) is fixed on the lower surface of the functional portion (25), and the stopper (251) can generate a limiting effect with the positioning block (12) so that relative displacement cannot occur between the socket assembly (1) and the plug assembly (2); A sliding space (27) is provided between the lower surface of the unlocking plate (24) and the upper surface of the plug housing (21), in which a locking block (3) is provided, which is located directly below the pressing portion (26) and is used to limit its downward movement. A tool groove (31) is provided on the locking block (3), and the locking block (3) can only be pulled to slide by inserting a specific tool that is compatible with the tool groove (31) into the tool groove (31), and the pressing portion (26) can be forced to move downward; The connector has a fully locked state, a first unlocked state, and a fully unlocked state; When the connector is in a completely locked state, the locking block (3) is placed directly below the pressing portion (26), and the unlocking plate (24) is restricted by the locking block (3) and cannot form a twisting movement; When the connector is in the first unlocking state, the locking block (3) is disengaged from the sliding space (27) under the action of the specific tool; When the connector is in a fully unlocked state, the unlocking plate (24) is subjected to force and twisted, the stopper (251) and the positioning block (12) are disengaged, and the plug assembly (2) is separated from the socket assembly (1); A limit block (13) is fixedly provided on the upper surface of the socket housing (11), and the limit block (13) is located outside the positioning block (12); a rocker (32) is fixedly provided in the middle of the locking block (3), and a clamping block (33) is fixedly provided on the lower surface of the rocker (32); when the connector is in a fully locked state, the clamping block (33) is placed in a groove formed between the limit block (13) and the positioning block (12); A fixing block (28) is fixedly provided on the upper surface of the plug housing (21), and a supporting block (34) is fixedly provided on the lower surface of the rocker (32). The supporting block (34) is located between the locking block (33) and the tool slot (31). When the connector is in a fully locked state, the supporting block (34) can be placed in a receiving slot formed by the limiting block (13) and the fixing block (28).

2. A high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: The plug-in engagement width of the socket signal terminal and the plug signal terminal is smaller than the plug-in engagement width of the socket power terminal and the plug power terminal; When the connector is in a fully unlocked state, during the process of separating the plug assembly (2) from the socket assembly (1), the plug power terminal, the plug signal terminal, the socket power terminal and the socket signal terminal have two separation states; When in the first separation state, the socket signal terminal and the plug signal terminal are disengaged, and the socket power terminal and the plug power terminal are still in the plugged state; When in the secondary separation state, the socket power terminal and the plug power terminal are disconnected.

3. The high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: The positioning block (12) and the stop block (251) are both in the shape of a right triangle. The first vertical surface (122) of the positioning block (12) is arranged to face away from the plug assembly (2). The stop block (251) is provided with a second vertical surface. When the connector is in a fully locked state and a first unlocked state, the first vertical surface (122) and the second vertical surface are in close contact.

4. The high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: A guide bar (29) is fixedly provided on the upper surface of the plug housing (21), the central axis of the guide bar (29) is parallel to the central axis of the plug housing (21), and a guide groove (35) adapted to the guide bar (29) is provided at the bottom of the locking block (3).

5. The high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: Support plates (36) are fixedly provided on both sides of the locking block (3), and arc blocks (37) are fixedly provided on the side walls of the support plates (36). Two slots (221) adapted to the arc blocks (37) are provided on the support plate (22), and the distance between the slots (221) is greater than the length of the upper bottom of the limiting block (13).

6. The high-voltage connector with a secondary unlocking function according to claim 5, characterized in that: A sliding groove (222) is provided on the support plate (22), and a sliding block (38) adapted to the sliding groove (222) is provided on the support plate (36), wherein at least a portion of the sliding block (38) extends into the sliding groove (222).

7. The high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: A guide bar (14) is fixedly provided on the socket housing (11), and the outer side surface of the guide bar (14) is in close contact with the inner side surface of the support plate (22).

8. The high-voltage connector with a secondary unlocking function according to claim 1, characterized in that: The locking block (3) and the unlocking plate (24) both have markings (9) on their surfaces.

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