Quick-release locking structure of high-voltage connector

Abstract

The application discloses a quick-release locking structure of a high-voltage connector, which comprises a joint a and a joint b matched with each other; the joint b comprises a conductive core rod, a coaxial core of the conductive core rod is fixed with an insulating sleeve, a front end of the coaxial core of the conductive core rod protrudes from a front end of the insulating sleeve; a metal sleeve is arranged on the insulating sleeve; the front end of the coaxial core of the insulating sleeve protrudes from a front end of the metal sleeve; an insulating outer edge is arranged on the coaxial core of the front end of the insulating sleeve; a metal outer edge is arranged on the coaxial core of the front end of the metal sleeve; the joint a comprises an insulating shell, a socket is arranged on the coaxial core in the insulating shell, a metal conductive sleeve is inlaid on the coaxial core of an upper end of the socket; the metal conductive sleeve is a core rod insertion channel, and a pressing type unlocking structure is arranged on a section of the insulating shell away from the metal conductive sleeve; and the stability of electric connection is improved.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage connectors. Background Technology

[0002] Existing high-voltage connector quick-release lock structures typically use push-button locking claws to achieve rapid connection and disconnection of the connectors. To ensure that the locking tongue can smoothly reset and engage in the locked position, traditional designs require a gap between the locking tongue and the locking edge of connector B to avoid interference. This results in connector B potentially still slightly floating axially after locking, causing contact sliding friction between the conductive core and the elastic conductive ring inside connector A. Under high-voltage and high-current conditions, this micro-movement can lead to electrical sparks, increased contact resistance, and unstable connections, posing safety hazards and reliability issues. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the prior art, the present invention provides a quick-release locking structure for a high-voltage connector to improve the stability of electrical connection.

[0004] Technical solution: To achieve the above objectives, the present invention provides a quick-release locking structure for a high-voltage connector, comprising a connector a and a connector b that cooperate with each other; connector b includes a conductive core rod, an insulating sleeve is coaxially fixed to the outside of the conductive core rod, and the front end of the conductive core rod coaxially protrudes from the front end of the insulating sleeve; a metal sleeve is fixedly fitted to the outside of the insulating sleeve; the front end of the insulating sleeve coaxially protrudes from the front end of the metal sleeve.

[0005] An insulating outer edge is coaxially provided at the front end of the insulating sleeve, and a metal outer edge is coaxially provided at the front end of the metal sleeve;

[0006] The connector includes an insulating shell, with a socket coaxially arranged inside the insulating shell. A metal conductive sleeve is coaxially fixed and embedded in the upper end of the socket. The metal conductive sleeve has a core insertion channel. A push-type unlocking structure is provided on the section of the insulating shell away from the metal conductive sleeve.

[0007] Furthermore, the outer diameters of the insulating outer edge and the metal outer edge are adapted to the inner diameter of the socket.

[0008] Furthermore, the inner wall of the mandrel insertion channel is provided with at least two inner annular grooves coaxially, and an annular conductive spring is provided coaxially along the path in the inner annular groove.

[0009] Furthermore, with connectors a and b facing each other, the press-type unlocking structure locks the outer edge of the metal, and the front end of the conductive core is inserted into the core insertion channel. The side wall of the conductive core is tightly fitted with the annular conductive spring, and an expansion force is generated on the annular conductive spring, so that the conductive core is stably electrically connected to the metal conductive sleeve through the annular conductive spring.

[0010] Furthermore, the insulating shell is provided with an upper slot and a lower slot that penetrate in a direction perpendicular to the axis.

[0011] The push-to-unlock mechanism includes a left locking claw and a right locking claw; the left and right locking claws are centrally symmetrical with respect to the axis of connector a; both the left and right locking claws include a button, and on both sides of the button are integrally fixed locking arms a and b in a hugging shape; there is a height difference between locking arms a and b, and in the assembled state, locking arm a slides into the upper slot and locking arm b slides into the lower slot.

[0012] Furthermore, locking arms a and b have coaxial circular arc contours; both locking arms a and b have limit sliders on their outer straight edges; the inner walls of the upper and lower slots are provided with grooves that cooperate with the sliding guide of the limit sliders, and the grooves are provided with limit posts for limiting the limit sliders.

[0013] The inner side of the button is provided with a spring support groove; both sides of the insulating shell are integrally provided with spring support seats, and the spring support seats are located at the height between the upper slot and the lower slot; a return spring that provides thrust is provided between the spring support groove on the inner side of the button and the spring support seat on the insulating shell; the inner side of the end of the a locking arm and the inner side of the end of the b locking arm are respectively the a locking tongue and the b locking tongue.

[0014] Furthermore, when the buttons on both sides of the insulating shell are pressed simultaneously, the two return springs are compressed further. At this time, the inner arc contours of each locking arm (a) and locking arm (b) are coaxial with the socket and outside the enclosed area of ​​the socket's inner contour. In this state, connector (b) can be smoothly inserted into the socket, allowing the front end of the conductive core rod to be inserted into the core rod insertion channel. When the pressure on the buttons on both sides of the insulating shell is released, under the thrust of the return springs, the buttons on both sides of the insulating shell automatically protrude outwards. Each limit slider slides to its corresponding limit post and enters a stable state. At this time, the inner arc contours of locking arms (a) and (b) become non-coaxial with the socket, causing both locking tongues (a) and (b) to radially penetrate into the socket, causing the metal outer edge of connector (b) to be stuck between locking tongues (a) and (b); thus entering the locked state.

[0015] Furthermore, the locking tongue A has a structural chamber inside, and the lower end face of the locking tongue A has a threaded through hole. The threaded through hole is threaded with an external threaded post. The lower end of the external threaded post is a push ball, and the upper end of the external threaded post extends into the structural chamber and is vertically and integrally connected to a swing arm.

[0016] The locking arm has a linear guide channel inside, extending parallel to the pressing direction of the button. One end of the linear guide channel connects to the structural compartment, and the other end connects to the outside. A slide rod is guided within the guide channel. A ball push rod is fixedly connected along the length of the slide rod near the structural compartment. The end of the ball push rod is a universal ball, which rolls with one side of the end of the swing arm. A limit part is integrally provided on the side of the slide rod near the ball push rod. In the initial state, the end of the limit part away from the structural compartment is limited by the limit step surface on the linear guide channel. A push spring is connected to the end of the swing arm away from the universal ball. The push spring applies a pushing force to the end of the swing arm, causing a relative force between the universal ball and the swing arm. A pre-pressing plate is arranged parallel to the pressing surface of the button. One side of the pre-pressing plate is fixedly connected to the slide rod through a connecting arm.

[0017] Furthermore, in any state, the pushing force of the push spring is significantly less than the pushing force of the return spring; in the free state, there is a travel gap between the advance pressing plate and the pressing surface of the button, and the push ball is in a state of protruding from the lower end face of the latch.

[0018] When the stroke distance becomes zero, the push ball that was originally protruding from the lower end face of the locking tongue a retracts into the threaded through hole along with the external threaded post.

[0019] Beneficial Effects: This invention integrates a two-stage locking mechanism with a self-tightening function. An automatic tightening module is added inside the latch to the basic press-locking structure. During unlocking / insertion, the pre-press linkage mechanism retracts the push ball, eliminating interference from the radial movement of the latch. After locking, the push spring drives the threaded joint to automatically unscrew the push ball, tightening it against the upper surface of the B-connector's retaining edge, achieving axial clamping and eliminating floating gaps. The driving force of the tightening module is significantly less than the thrust of the main lock's return spring, ensuring that the latch can smoothly return to its position first during locking, and then the tightening action is performed, making the action logic reliable. Through the final mechanical tightening, axial micro-movement of the B-connector under vibration is effectively prevented, fundamentally avoiding electrical sparks caused by contact point slippage, and improving the electrical contact stability and safety of the high-voltage connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0021] Figure 2 This is a breakdown diagram of the solution;

[0022] Figure 3 This is a diagram illustrating the locked and unlocked states.

[0023] Figure 4 This is a sectional view of the housing structure of connector a;

[0024] Figure 5 This is a partial schematic diagram of the locked state;

[0025] Figure 6 This is a schematic diagram of the improved structure;

[0026] Figure 7 This is a schematic diagram of the improved locking claw structure;

[0027] Figure 8 for Figure 7 A sectional view;

[0028] Figure 9 for Figure 8 A schematic diagram of the internal transmission structure. Detailed Implementation

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] As attached Figures 1 to 5 The quick-release locking structure of a high-voltage connector shown includes a connector a 60 and a connector b 61 that cooperate with each other. Connector b 61 includes a conductive core 24, with an insulating sleeve 25 coaxially fixed to the outside of the conductive core 24. The front end of the conductive core 24 coaxially protrudes from the front end of the insulating sleeve 25. A metal sleeve 23 is fixedly fitted over the insulating sleeve 25. The front end of the insulating sleeve 25 coaxially protrudes from the front end of the metal sleeve 23. An insulating outer edge 25a is coaxially provided on the outside of the front end of the insulating sleeve 25, and a metal outer edge is coaxially provided on the outside of the front end of the metal sleeve 23. 22; a connector 60 includes an insulating shell 1, a socket 20 is coaxially arranged inside the insulating shell 1, a metal conductive sleeve 16 is coaxially fixedly embedded at the top of the socket 20, the metal conductive sleeve 16 is electrically connected to the wire core in the wire harness; the metal conductive sleeve 16 has a core insertion channel 17 inside, the inner wall of the core insertion channel 17 is provided with at least two inner ring grooves 18 coaxially, and an annular conductive spring 19 is coaxially arranged in the inner ring grooves 18 along the path; a push-type unlocking structure is provided on the section of the insulating shell 1 away from the metal conductive sleeve 16.

[0031] The outer diameters of the insulating outer edge 25a and the metal outer edge 22 are adapted to the inner diameter of the socket 20. When the a connector 60 and the b connector 61 are inserted into each other, the press-type unlocking structure locks the metal outer edge 22, and the front end of the conductive core rod 24 is inserted into the core rod insertion channel 17. The side wall of the conductive core rod 24 is tightly fitted with the annular conductive spring 19 and forms an expansion force on the annular conductive spring 19, so that the conductive core rod 24 is stably electrically connected to the metal conductive sleeve 16 through the annular conductive spring 19.

[0032] like Figure 2 The insulating shell 1 is provided with an upper slot 2 and a lower slot 3 that are perpendicular to the axis; the push-to-unlock structure includes a left locking claw 5a and a right locking claw 6a; the left locking claw 5a and the right locking claw 6a are centrally symmetrical with respect to the axis of the a-joint 60.

[0033] The left locking claw 5a and the right locking claw 6a have the same structure, both including a button 8. On both sides of the button 8, locking arms a14 and b10 are integrally fixed in a hugging shape. There is a height difference between locking arms a14 and b10. In the assembled state, locking arm a14 slides into the upper slot 2 and locking arm b10 slides into the lower slot 3. Locking arms a14 and b10 have a circular arc profile with their inner contours coaxial. There are limit sliders 11 on the outer straight edges of locking arms a14 and b10. The inner sidewalls of the upper slot 2 and the lower slot 3 are provided with grooves 26 that slide and guide the limit sliders 11. Limiting posts 27 for limiting the limit sliders 11 are provided in the grooves 26.

[0034] A spring support groove 9 is provided on the inner side of button 8; a spring support seat 4 is integrally provided on both sides of insulating shell 1, and the spring support seat 4 is located at the height between upper slot 2 and lower slot 3; a return spring 7 providing thrust is provided between the spring support groove 9 on the inner side of button 8 and the spring support seat 4 on insulating shell 1; the inner side of the end of lock arm a14 and the inner side of the end of lock arm b10 are respectively lock tongue a13 and lock tongue b12.

[0035] When the buttons 8 on both sides of the insulating shell 1 are pressed down simultaneously, the two reset springs 7 are compressed to their limit positions. At this time, the inner arc contours of each a locking arm 14 and b locking arm 10 are coaxial with the socket 20 and are outside the enclosed area of ​​the inner contour of the socket 20. In this state, the b connector 61 can be smoothly inserted into the socket 20, so that the front end of the conductive core rod 24 is inserted into the core rod insertion channel 17 to a predetermined depth. The side wall of the conductive core rod 24 is tightly fitted with the annular conductive spring 19 and forms an expansion force on the annular conductive spring 19, so that the conductive core rod 24 is stably electrically connected to the metal conductive sleeve 16 through the annular conductive spring 19.

[0036] When the pressure on the buttons 8 on both sides of the insulating shell 1 is released, under the push of the return spring 7, the buttons 8 on both sides of the insulating shell 1 automatically protrude outward. Each limit slider 11 slides to its corresponding limit post 27 and enters a stable state. At this time, the inner arc contours of the locking arm 14 and the locking arm 10 and the socket 20 change from being coaxial to being non-coaxial. This causes the locking tongue 13 and the locking tongue 12 to both radially penetrate into the socket 20, so that the metal outer edge 22 on the connector 61 is stuck between the locking tongue 13 and the locking tongue 12. Thus, it enters a locked state. At this time, even if the connector 61 is pulled outward, it cannot be pulled outward.

[0037] To ensure that latches 13 and 12 can smoothly and spontaneously penetrate radially into the socket 20 under the thrust of the return spring 7 during the locking phase, the specific dimensional design must ensure that there is no significant frictional resistance or interference during the radial penetration of latches 13 and 12 into the socket 20. Therefore, when the outer metal edge 22 of connector 61 is stuck between latches 13 and 12, it is not tightly clamped by them. Under external vibration and disturbance, the outer metal edge 22 of connector 61 can still slightly float relative to connector 60 along the axial direction, resulting in an electrical spark problem caused by contact slippage friction between the conductive core 24 and the annular conductive spring 19. To solve this problem, the following structure was designed:

[0038] The improved structure is as follows Figures 6 to 9 As shown, a locking tongue 13 has a structural chamber 33 inside. The lower end face of a locking tongue 13 has a threaded through hole 35. The threaded through hole 35 is threaded with an external threaded post 34. The lower end of the external threaded post 34 is a push ball 43. The upper end of the external threaded post 34 extends into the structural chamber 33 and is vertically and integrally connected to a swing arm 36.

[0039] The locking arm 14 has a linear guide channel 28 extending parallel to the pressing direction of the button 8. One end of the linear guide channel 28 is connected to the structural compartment 33, and the other end is connected to the outside. A slide rod 29 is guided and fitted inside the guide channel 28. A ball push rod 39 is fixedly connected along the length of the end of the slide rod 29 near the structural compartment 33. The end of the ball push rod 39 is a universal ball 38, which rolls and engages with one side of the end of the swing arm 36. A limiting part 40 is integrally provided on the side of the slide rod 29 near the end of the ball push rod 39. In the initial state, the end of the limiting part 40 away from the structural compartment 33 is limited and engaged with the limiting step surface 41 on the linear guide channel 28.

[0040] A push spring 37 is connected to the end of the swing arm 36 away from the universal ball bearing 38. The push spring 37 applies a pushing force to the end of the swing arm 36, so that a relative force is generated between the universal ball bearing 38 and the swing arm 36. A pre-pressing plate 31 is arranged parallel to the pressing surface of the button 8. One side of the pre-pressing plate 31 is fixedly connected to the slide rod 29 through the connecting arm 30.

[0041] In this case, under any condition, the pushing force of the push spring 37 is significantly less than the pushing force of the return spring 7.

[0042] In the free state, there is a travel distance 32 between the pressing surface of the advance pressing plate 31 and the pressing surface of the button 8, and the push ball 43 is in a state of protruding from the lower end surface of the locking tongue 13.

[0043] Before inserting connector a 60 and connector b 61, when manually pressing the buttons 8 on both sides of the insulating shell 1, the first pressing plate 31 will be pressed before the button 8. Then, the first pressing plate 31 will transmit the pressing force to the swing arm 36 through the slide rod 29 and the ball push rod 39, thereby causing the swing arm 36 to drive the external threaded column 34 to rotate forward by a certain angle. Then, under the drive of the thread, the external threaded column 34 moves along the axial direction, causing the push ball 43, which originally protruded from the lower end face of the locking tongue 13, to retract into the threaded through hole 35 along with the external threaded column 34. The push spring 37 is adaptively compressed, but the rebound force of the push spring 37 never exceeds the force of the return spring 7.

[0044] When the travel distance 32 becomes zero, the button 8 and the advance pressing piece 31 begin to move synchronously under the pressing action. Subsequently, when the button 8 is pressed to the bottom, the inner arc contours of each a locking arm 14 and b locking arm 10 are coaxial with the socket 20 and are all outside the enclosed range of the inner contour of the socket 20. In this state, the b connector 61 can be smoothly inserted into the socket 20, so that the front end of the conductive core rod 24 is inserted into the core rod insertion channel 17 to a predetermined depth. The side wall of the conductive core rod 24 is tightly fitted with the annular conductive spring 19 and forms an expansion force on the annular conductive spring 19, so that the conductive core rod 24 is stably electrically connected to the metal conductive sleeve 16 through the annular conductive spring 19.

[0045] After insertion, release the pressure on the advance pressing plates 31 on both sides of the insulating shell 1. Since the pushing force of the push spring 37 is significantly less than the pushing force of the return spring 7 in any state, under the pushing force of the return spring 7, the buttons 8 and advance pressing plates 31 on both sides of the insulating shell 1 will move outward synchronously and automatically. After each limit slider 11 slides to its limit position and engages with its corresponding limit post 27, the button 8 enters a stationary state. At this time, the inner arc contours of the locking arms 14 and 10 and the insertion port 20 are no longer coaxial with each other. The center becomes non-coaxial, thus allowing both locking tongue 13 and locking tongue 12 to smoothly penetrate radially into the socket 20, causing the outer metal edge 22 on connector 61 to be stuck between locking tongue 13 and locking tongue 12. During the above process, since the push ball 43 is in the retracted state, locking tongue 13 and locking tongue 12 smoothly penetrate radially into the socket 20 under the push of the return spring 7, and the outer metal edge 22 is stuck between locking tongue 13 and locking tongue 12 without easily forming frictional resistance and interference.

[0046] Once button 8 is in position and the outer metal edge 22 of connector b 61 is engaged between latch a 13 and latch b 12, the advance pressing plate 31 will continue to move outward under the pushing force of the push spring 37 until the travel distance 32 between the advance pressing plate 31 and the pressing surface of button 8 returns to its initial state. At the same time, the push spring 37 begins to drive the external threaded column 34 to rotate in the opposite direction by a certain angle through the swing arm 36. Then, driven by the thread, the external threaded column 34 moves along the axial direction, causing the push ball 43 to protrude again from the lower end face of latch a 13, and causing the outwardly protruding push ball 43 to press against the upper stepped surface 22a of the outer metal edge 22. After the upper stepped surface 22a of the outer metal edge 22 is subjected to the downwardly protruding push ball 43, it is equivalent to the outer metal edge 22 being tightly clamped between latch a 13 and latch b 12; thus avoiding the problem of the outer metal edge 22 slightly floating relative to connector a 60 along the axial direction under external force disturbance.

[0047] Conversely, when unlocking is required, the button 8 on both sides of the insulating shell 1 is pressed manually. The first pressing plate 31 will be pressed and activated before the button 8, so that before the left locking claw 5a and the right locking claw 6a move, the push ball 43 will retract into the threaded through hole 35 along with the external threaded post 34, thus avoiding frictional resistance when the left locking claw 5a and the right locking claw 6a move.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A quick-release locking structure for a high-voltage connector, characterized in that: It includes a connector a (60) and a connector b (61) that cooperate with each other; the connector b (61) includes a conductive core rod (24), an insulating sleeve (25) is coaxially fixed to the outside of the conductive core rod (24), and the front end of the conductive core rod (24) coaxially protrudes from the front end of the insulating sleeve (25); a metal sleeve (23) is fixedly sleeved on the outside of the insulating sleeve (25); the front end of the insulating sleeve (25) coaxially protrudes from the front end of the metal sleeve (23); The insulating sleeve (25) has an insulating outer edge (25a) coaxially arranged at the front end, and the metal sleeve (23) has a metal outer edge (22) coaxially arranged at the front end. The connector (60) includes an insulating shell (1), and a socket (20) is coaxially arranged inside the insulating shell (1). A metal conductive sleeve (16) is coaxially fixedly embedded in the upper end of the socket (20). The metal conductive sleeve (16) has a core rod insertion channel (17) inside. A push-type unlocking structure is provided on a section of the insulating shell (1) away from the metal conductive sleeve (16).

2. The quick-release locking structure of a high-voltage connector according to claim 1, characterized in that: The outer diameters of the insulating outer edge (25a) and the metal outer edge (22) are adapted to the inner diameter of the socket (20).

3. The quick-release locking structure of a high-voltage connector according to claim 2, characterized in that: The inner wall of the mandrel insertion channel (17) is provided with at least two inner ring grooves (18) coaxially, and a ring-shaped conductive spring (19) is provided coaxially along the path in the inner ring groove (18).

4. The quick-release locking structure of a high-voltage connector according to claim 3, characterized in that: With connector a (60) and connector b (61) facing each other, the press-type unlocking structure locks the outer edge of the metal (22), and the front end of the conductive core rod (24) is inserted into the core rod insertion channel (17). The side wall of the conductive core rod (24) is tightly fitted with the annular conductive spring (19) and forms an expansion force on the annular conductive spring (19), so that the conductive core rod (24) is stably electrically connected to the metal conductive sleeve (16) through the annular conductive spring (19).

5. The quick-release locking structure of a high-voltage connector according to claim 4, characterized in that: The insulating shell (1) is provided with an upper slot (2) and a lower slot (3) that are perpendicular to the axis. The press-type unlocking structure includes a left locking claw (5a) and a right locking claw (6a); the left locking claw (5a) and the right locking claw (6a) are centrally symmetrical with respect to the axis of the a connector (60); Both the left locking claw (5a) and the right locking claw (6a) include a button (8). On both sides of the button (8), there are a locking arm (14) and a locking arm (10) that are in a hugging shape. There is a height difference between the locking arm (14) and the locking arm (10). In the assembled state, the locking arm (14) slides into the upper slot (2) and the locking arm (10) slides into the lower slot (3).

6. The quick-release locking structure of a high-voltage connector according to claim 5, characterized in that: Locking arm (14) and locking arm (10) are circular arc contours with the inner contours coaxial; there are limit sliders (11) on the straight sides of the outer sides of locking arm (14) and locking arm (10). The inner walls of the upper slot (2) and the lower slot (3) are provided with sliding grooves (26) that cooperate with the sliding guide of the limiting slider (11). The sliding grooves (26) are provided with limiting stakes (27) for limiting the limiting slider (11). A spring support groove (9) is provided on the inner side of the button (8); a spring support seat (4) is integrally provided on both sides of the insulating shell (1), and the spring support seat (4) is located at the height between the upper slot (2) and the lower slot (3); a return spring (7) providing thrust is provided between the spring support groove (9) on the inner side of the button (8) and the spring support seat (4) on the insulating shell (1); the inner side of the end of the a locking arm (14) and the inner side of the end of the b locking arm (10) are respectively the a locking tongue (13) and the b locking tongue (12).

7. The quick-release locking structure of a high-voltage connector according to claim 6, characterized in that: When the buttons (8) on both sides of the insulating shell (1) are pressed down at the same time, the two reset springs (7) are compressed further at the same time. At this time, the inner arc contours of each a locking arm (14) and b locking arm (10) are coaxial with the socket (20) and are outside the enclosed range of the inner contour of the socket (20). In this state, the b connector (61) can be smoothly inserted into the socket (20), so that the front end of the conductive core rod (24) is inserted into the core rod insertion channel (17). When the pressure on the buttons (8) on both sides of the insulating shell (1) is released, under the thrust of the reset spring (7), the buttons (8) on both sides of the insulating shell (1) automatically protrude outward. Each limit slider (11) slides to its corresponding limit post (27) and enters a stable state. At this time, the inner arc contour of the locking arm (14) and the locking arm (10) and the socket (20) change from being coaxial to being non-coaxial. This causes the locking tongue (13) and the locking tongue (12) to both probe radially into the socket (20), so that the metal outer edge (22) on the connector (61) is stuck between the locking tongue (13) and the locking tongue (12); thus entering the locked state.

8. The quick-release locking structure of a high-voltage connector according to claim 7, characterized in that: The locking tongue (13) is provided with a structural chamber (33) inside. The lower end face of the locking tongue (13) is provided with a threaded through hole (35). The threaded through hole (35) is threaded with an external threaded post (34). The lower end of the external threaded post (34) is a push ball (43). The upper end of the external threaded post (34) extends into the structural chamber (33) and is vertically and integrally connected to a swing arm (36). The locking arm (14) is provided with a straight guide channel (28) whose extension direction is parallel to the pressing direction of the button (8). One end of the straight guide channel (28) is connected to the structural compartment (33), and the other end is connected to the outside. A slide rod (29) is guided and fitted inside the guide channel (28). A ball push rod (39) is fixedly connected along the length direction at the end of the slide rod (29) near the structural compartment (33). The end of the ball push rod (39) is a universal ball (38). The universal ball (38) is in rolling cooperation with one side of the end of the swing arm (36). The slide bar (29) has a limiting part (40) integrally provided on one side near the ball push rod (39). In the initial state, the end of the limiting part (40) away from the structural compartment (33) is limited and matched with the limiting step surface (41) on the straight guide channel (28). The end of the swing arm (36) away from the universal ball (38) is connected to a push spring (37). The push spring (37) applies a push force to the end of the swing arm (36), so that the universal ball (38) and the swing arm (36) generate a relative force. A pre-pressing plate (31) is arranged parallel to the pressing surface of the button (8). One side of the pre-pressing plate (31) is fixedly connected to the slide rod (29) through the connecting arm (30).

9. The quick-release locking structure of a high-voltage connector according to claim 8, characterized in that: In any state, the pushing force of the push spring (37) is significantly less than the pushing force of the return spring (7); In the free state, there is a travel gap (32) between the pressing surfaces of the advance pressing plate (31) and the button (8), and the push ball (43) is in a state of protruding from the lower end face of the latch (13); When the stroke pitch (32) becomes zero, the push ball (43) that was originally protruding from the lower end face of the locking tongue (13) retracts into the threaded through hole (35) along with the external threaded post (34).

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