Terminal block with latching handle

Abstract

The application discloses a terminal block with a lock handle, which comprises a plug and a socket that can be connected, a first buckle on the plug and a second buckle on the socket can be connected by buckling, a cavity structure in the plug is provided with a first opening and a second opening, one end of the first buckle extends into the cavity structure through the first opening, the lock handle comprises a connecting plate, a pressing surface, an elastic leg and a top block, the connecting plate is slidably arranged in the cavity structure at a set distance, one end of the connecting plate extends to the outside of the plug through the second opening, the pressing surface at the upper end of the connecting plate is stopped on the outside of the upper end of the plug, the connecting plate and the elastic leg at the lower end of the connecting plate form a Y-shaped structure, one end or both ends of the elastic leg abut against the surface of the sidewall at the lower end of the cavity structure, and the top block is fixed on the lower end of the connecting plate or the close end of the elastic leg, the top block can slide along the sidewall of the cavity structure of the plug towards the first opening, so as to force the first buckle and the second buckle to be disconnected, and the application is convenient to operate and can make the product suitable for installation in a compact environment.

Description

Technical Field

[0001] This invention relates to a connector, and more particularly to a terminal block with a locking handle. Background Technology

[0002] Plug-in terminal blocks that combine wiring and circuit board functions offer advantages such as rapid installation, space saving, and ease of maintenance. The plug has an inlet hole for connecting wires, which connects to conductive terminals, thus enabling electrical connection between the terminals and the wires. However, the connection between the plug and socket relies solely on friction, making it susceptible to loosening or even detachment due to wire movement, equipment or machine vibration, and other factors. This could potentially affect the stability of signal or current transmission.

[0003] To solve the problem of plugs and sockets becoming loose, locking mechanisms have been installed on plugs and sockets on the market to achieve a fastening effect.

[0004] Common attachment mechanisms include threaded connections on both sides of the plug and socket in the width direction, or snap-fit ​​connections. Threaded connections are inconvenient to operate. In addition, these two structures, because they are designed on both sides of the product, result in a large product size, which cannot meet the requirements of compact environments. Furthermore, due to their large space occupation, they cannot meet the needs of multiple fixing methods coexisting. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides a terminal block with a locking handle. The terminal block with the locking handle can achieve an automatic locking state when the plug and socket are connected, and the unlocking operation is convenient. The locking handle is hidden inside the plug, which can adapt to the compact installation environment.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A terminal block with a locking handle, including a plug and a socket. The plug can be inserted into the socket to achieve electrical conduction. The plug is provided with a first latch, and the socket is provided with a second latch. The first latch and the second latch can be engaged and connected. A cavity structure is formed inside the plug. The cavity structure has a first opening and a second opening, with the second opening located at the top of the cavity structure. One end of the first latch extends into the cavity structure through the first opening. A locking handle is also provided. The locking handle includes a connecting plate, a pressing surface, an elastic support foot, and a top block. The connecting plate is slidably installed within the cavity structure of the plug along its extension direction by a set distance. One end of the connecting plate extends from the second opening of the cavity structure to the outer side above the plug. The pressing surface is fixedly installed on the upper end of the connecting plate and stops on the outer surface of the upper end of the plug. The elastic support foot, which can be elastically deformed, is fixedly installed on the lower end of the connecting plate. The two ends of the elastic support foot extend in opposite directions from the lower end of the connecting plate. The elastic support foot and the connecting plate together form a Y-shaped structure. One or both ends of the elastic support foot are tightly pressed against the lower side wall surface of the cavity structure. The top block is fixedly installed on the lower end of the connecting plate or on one end of the elastic support foot that is tightly pressed against the lower side wall surface of the cavity structure. The top block can slide along the side wall of the plug cavity structure towards the first opening. The sliding of the top block can press against the first buckle and force the first buckle to disengage from the second buckle.

[0007] As a further improvement of the present invention, the elastic support leg has an arc-shaped structure, and the other end of the connecting plate is fixedly connected to the middle of the convex arc surface of the elastic support leg.

[0008] As a further improvement of the present invention, a sliding plate is fixedly provided at one end of the elastic support leg, and a slide rail extending along the sliding direction of the top block is provided on the lower side wall surface of the plug cavity structure. The sliding plate is slidably inserted into the slide rail, and the top block is fixedly installed on the sliding plate.

[0009] As a further improvement of the present invention, the other end of the elastic support leg is positioned within the cavity structure of the plug and is stopped along the sliding direction of the top block.

[0010] As a further improvement of the present invention, two limiting baffles extending from top to bottom are provided parallel to each other in the cavity structure of the plug, and a slide is formed between the two limiting baffles for the connecting plate to slide into. There is a set gap between the side wall of the slide along the sliding direction of the top block and the connecting plate, and the other end of the elastic support leg is fixedly positioned with the side wall of the cavity structure of the plug.

[0011] As a further improvement of the present invention, the side wall of the connecting plate is also provided with an anti-detachment protrusion structure, which stops the inner surface of the upper end of the cavity structure of the plug.

[0012] As a further improvement of the present invention, anti-displacement grooves are formed on the two side walls of the second opening of the cavity structure of the plug, and anti-displacement protrusions are provided on the two side walls of the upper end of the connecting plate, and the anti-displacement protrusions can be inserted into the anti-displacement grooves.

[0013] As a further improvement of the present invention, the second buckle is a recessed groove structure provided on the upper surface of the socket, and the first buckle is an elastic buckle provided on the side wall of the plug facing the socket. The elastic buckle can be inserted into the recessed groove structure on the upper surface of the socket under the action of elastic force. The recessed groove structure stops on the surface of the elastic buckle along the side wall of the plug and socket pull-out direction. The top block of the locking handle can drive the elastic buckle to overcome the elastic force and move out of the recessed groove of the socket.

[0014] As a further improvement of the present invention, the elastic buckle includes a cantilever integrally formed on the side wall of the plug facing the socket and a barb provided at the end of the cantilever. The barb can be accommodated in the recessed groove of the socket and hooked to the side wall of the recessed groove facing the plug. The root of the cantilever extends into the cavity structure of the plug through a first opening. An inclined contact surface is formed on the lower surface of the cantilever. A hollow structure is formed at the root of the cantilever that is directly opposite to the inclined contact surface. The top block can be slidably inserted into the hollow structure and tightly abuts against the inclined contact surface of the root of the cantilever.

[0015] As a further improvement of the present invention, the plug is provided with a bolt receiving hole extending along the plug-socket insertion direction on the lower side of the cavity structure. An auxiliary screw is inserted into the bolt receiving hole, which can rotate in the circumferential direction and slide a set distance in the axial direction. The auxiliary screw extends a set distance from the side of the plug facing the socket. The side wall of the socket facing the plug is provided with a connecting threaded hole, and the auxiliary screw can be movably screwed into the connecting threaded hole.

[0016] The beneficial effects of this invention are as follows: When the socket and plug of this invention are plugged in, the first latch on the side wall of the plug facing the socket automatically engages with the second latch on the upper surface of the socket, realizing automatic locking of the plug and socket and preventing the plug and socket from loosening under external force. When disengaging, simply press the pressing surface of the locking handle to disengage the first latch and the second latch, which is convenient to operate. Except for the pressing surface, the locking handle is hidden inside the cavity structure of the plug, without occupying the external space of the plug. Moreover, the first latch is designed on the side wall of the plug facing the socket, and the second latch is a recessed structure at the upper end of the socket. After engaging, the first latch is hidden in the recessed structure, without occupying the external space of the product, especially without increasing the width of the product, so that the product can be installed in a compact environment. Since the locking handle of this invention is designed inside the product and does not occupy the external space of the product, this invention can also be equipped with a selectable threaded connection method at the same position of the locking handle to increase the stability of the fixed connection between the plug and the socket. The locking handle can also be changed in position according to different needs, making the structure more flexible. Attached Figure Description

[0017] Figure 1 This is a first split state diagram of the plug and socket of the present invention;

[0018] Figure 2 This is a second split state diagram of the plug and socket of the present invention;

[0019] Figure 3 This is a schematic diagram showing the engagement state of the first and second buckles of the present invention;

[0020] Figure 4 This is a schematic diagram showing the disengaged state of the first and second latches of the present invention;

[0021] Figure 5 This is a cross-sectional view of the plug and socket connection of the present invention;

[0022] Figure 6 This is a cross-sectional view of the first and second buckles of the present invention in the engaged state;

[0023] Figure 7 This is a perspective view of the locking handle of the present invention;

[0024] Figure 8 This is a first cross-sectional perspective view of the plug of the present invention;

[0025] Figure 9 This is a second cross-sectional perspective view of the plug of the present invention. Detailed Implementation

[0026] Example: A terminal block with a locking handle 3 includes a plug 1 and a socket 2. The plug 1 can be plugged into the socket 2 to achieve electrical conduction. The plug 1 is provided with a first latch 12, and the socket 2 is provided with a second latch 21. The first latch 12 and the second latch 21 can be fastened together. A cavity structure 11 is formed inside the plug 1. The cavity structure 11 has a first opening and a second opening, and the second opening is located above the cavity structure 11. One end of the first latch 12 extends into the cavity structure 11 through the first opening. A locking handle 3 is also provided. The locking handle 3 includes a connecting plate 33, a pressing surface 31, an elastic support foot 34, and a top block 37. The connecting plate 33 is slidably installed in the cavity structure 11 of the plug 1 along its extension direction by a set distance. One end of the connecting plate 33 extends from the cavity structure. 11 The second opening extends to the outer side above the plug 1. The pressing surface 31 is fixedly installed on the upper end of the connecting plate 33. The pressing surface 31 stops on the outer surface of the upper end of the plug 1. The elastic support leg 34, which can be elastically deformed, is fixedly installed on the lower end of the connecting plate 33. The two ends of the elastic support leg 34 extend in opposite directions from the lower end of the connecting plate 33. The elastic support leg 34 and the connecting plate 33 together form a Y-shaped structure. One or both ends of the elastic support leg 34 are tightly pressed against the lower side wall surface of the cavity structure 11. The top block 37 is fixedly installed on the lower end of the connecting plate 33 or on one end of the elastic support leg 34 that is tightly pressed against the lower side wall surface of the cavity structure 11. The top block 37 can slide along the side wall of the cavity structure 11 of the plug 1 towards the direction of the first opening. The sliding of the top block 37 can press against the first buckle 12, forcing the first buckle 12 to disengage from the second buckle 21.

[0027] When plug 1 is inserted into socket 2, the first latch 12 on plug 1 moves along with plug 1 and engages with the second latch 21 on socket 2. At this time, socket 2 and plug 1 are connected by the first latch 12 and the second latch 21, preventing them from opening. This achieves a stable connection between plug 1 and socket 2, preventing them from loosening due to vibration or accidental contact. When plug 1 is inserted into socket 2, the plug pin of plug 1 is inserted into the socket hole of socket 2, and the terminal 22 in the socket hole of socket 2 is inserted into the clip 15 inside the plug pin of plug 1. The terminal 22 of socket 2 is clamped and guided by the clip 15 of plug 1. The plug 1 has a wire inlet hole at the other end. The wire entering the wire inlet hole is clamped and connected by the clip 15 inside the plug 1 and the integrally formed square box structure 13. Thus, when the plug 1 is plugged into the socket 2, the wire is connected to the terminal on the socket 2, forming a conductive circuit. When the wire in the plug 1 needs to be replaced, simply rotate the screw 17 on the plug 1 counterclockwise to move the square box and release the wire. When the plug 1 needs to be unplugged from the socket 2, simply press the pressing surface 31 of the locking handle 3. The pressing surface 31 is pressed and moves the connecting plate 33 within the cavity structure 11. The movement generates displacement. To prevent finger slippage during pressing, it is best to provide anti-slip ribs 32 with concave and convex shapes on the surface of the pressing surface 31. The elastic support foot 34 at the lower end of the connecting plate 33 will deform under the pressure transmitted from the connecting plate 33. One or both ends of the elastic support foot 34 will slide laterally along the inner surface of the lower end of the cavity structure 11, thereby driving the top block 37 located at the lower end of the connecting plate 33 or one end of the elastic support foot 34 to move synchronously. The movement of the top block 37 will drive the first latch 12 to disengage from the second latch 21. At this time, the plug 1 can be easily pulled out from the socket 2. This structure realizes the connection between the plug 1 and the socket 2. The plug 1 automatically locks after connection, and the locking handle 3 is hidden inside the cavity structure 11 of the plug 1, without occupying the external space in the width direction of the plug 1, so that the terminal block can be used in a compact environment. At the same time, the locking structure of this application is simple and easy to operate. The first buckle 12 and the second buckle 21 can be disengaged with a single press. In order to improve the ease of installation of the locking handle 3, the outer shell of the plug 1 can be a split structure, which is formed by the main body structure and the cover 14 being fastened together. During assembly, first insert one end of the locking handle 3 into the opening groove of the main body structure of the plug 1, and then close the cover to assemble and position the locking handle 3.

[0028] The elastic support leg 34 has an arc-shaped structure, and the other end of the connecting plate 33 is fixedly connected to the middle of the convex arc surface of the elastic support leg 34. When the connecting plate 33 is pressed, the arc-shaped structure of the elastic support leg 34 is deformed by pressure. When the pressing surface 31 on the connecting plate 33 is released, the elastic support leg 34 will automatically return to its original shape, forming an elastic reset. At the same time, when the top block 37 is installed on one end of the elastic support leg 34, due to the deformation of the elastic support leg 34 by pressure, its arc-shaped surface gradually becomes a flat surface, thereby forming an extension effect in the vertical direction, thus realizing the horizontal sliding of the top block 37. At this time, the first opening direction and the second opening direction can be designed to be perpendicular to each other. When the top block 37 is installed at the lower end of the connecting plate 33, the elastic support leg 34 only serves as an elastic reset function. The first opening direction and the second opening direction can be set in opposite directions on the same plane. In addition to adopting an arc-shaped structure, the elastic support leg 34 can also adopt a V-shaped structure or a W-shaped structure, etc., as long as it can play the role of elastic reset and sliding under pressure deformation.

[0029] A sliding plate 36 is fixedly provided at one end of the elastic support leg 34. A slide rail 117 extending along the sliding direction of the top block 37 is provided on the lower side wall surface of the cavity structure 11 of the plug 1. The sliding plate 36 is slidably inserted into the slide rail 117, and the top block 37 is fixedly installed on the sliding plate 36. The elastic support leg 34 slides through the sliding plate 36 and the upper slide rail 117 on the lower inner side of the cavity structure 11 of the plug 1, thereby guiding the top block 37 at one end of the elastic support leg 34. At the same time, the inner side walls of the sliding plate 36 and the slide rail 117 can be designed as smooth surfaces to reduce friction.

[0030] The other end of the elastic support leg 34 is positioned within the cavity structure 11 of the plug 1, with a stop along the sliding direction of the top block 37. The other end of the elastic support leg 34 can be fixed within the cavity structure 11 of the plug 1, or it can slide only vertically without sliding along the sliding direction of the top block 37. This provides a pushing force to the elastic support leg 34 towards the first opening, ensuring that the top block 37 lifts the first latch 12 and preventing the elastic support leg 34 from moving away from the first opening due to pressure from the first latch 12. Ideally, a limiting baffle 11535 is provided at the other end of the elastic support leg 34 within the cavity structure 11. Two spaced positioning blocks 119 are fixedly installed on the side wall. The positioning blocks press down on the upper end of the limiting baffle 115 at the other end of the elastic support leg 34, and the lower end of the limiting baffle 115 at the other end of the elastic support leg 34 stops on the lower side of the cavity structure 11. At the same time, the transverse side wall of the limiting baffle 115 at the other end of the elastic support leg 34 stops in the gap formed between the side wall of the cavity structure 11 and the side wall of the slide 117 for the sliding plate 36, thereby fixing the other end of the elastic support leg 34 in a fixed position.

[0031] The plug 1 has two parallel, downward-extending limiting baffles 115 spaced apart within its cavity structure 11. A slide rail 117 is formed between the two limiting baffles 115, allowing the connecting plate 33 to slide into it. A predetermined gap exists between the sidewall of the slide rail 117 along the sliding direction of the top block 37 and the connecting plate 33. The other end of the elastic support leg 34 is fixedly positioned against the sidewall of the plug 1's cavity structure 11. By allowing the connecting plate 33 to slide within the inclined slide rail 117, it adapts to the increased size of the other end of the elastic support leg 34 after deformation under pressure, preventing the connecting plate 33 from being unable to be properly pressed down.

[0032] The connecting plate 33 is also provided with an anti-detachment protrusion 38 on its side wall. The anti-detachment protrusion 38 stops on the inner surface of the upper end of the cavity structure 11 of the plug 1. The anti-detachment protrusion 38 limits the connecting plate 33 when it slides, preventing the connecting plate 33 from detaching from the cavity structure 11 of the plug 1.

[0033] Anti-displacement grooves 116 are formed on both sides of the second opening of the cavity structure 11 of the plug 1, and anti-displacement protrusions 39 are provided on both sides of the upper end of the connecting plate 33. The anti-displacement protrusions 39 can be inserted into the anti-displacement grooves 116. When the pressing surface 31 contacts the upper surface of the plug 1, the anti-displacement protrusions 39 are embedded in the anti-displacement grooves 116, and the force of pulling out the plug 1 is transmitted to the body of the plug 1, instead of acting only on the locking handle 3, thus preventing the locking handle 3 from disengaging.

[0034] The second buckle 21 is a recessed groove structure on the upper surface of the socket 2, and the first buckle 12 is an elastic buckle on the side wall of the plug 1 facing the socket 2. The elastic buckle can be inserted into the recessed groove structure on the upper surface of the socket 2 under the action of elastic force. The recessed groove structure stops on the surface of the elastic buckle along the side wall of the plug 1 and the socket 2 in the direction of pulling out. The top block 37 of the locking handle 3 can drive the elastic buckle to overcome the elastic force and move out of the recessed groove of the socket 2.

[0035] The first latch 12 and the second latch 21 are not located on opposite sides of the plug 1 and socket 2 in the width direction. The second latch 21 is designed on the upper surface of the socket 2, and the first latch 12 is designed on the side wall of the plug 1 facing the socket 2. After the first latch 12 and the second latch 21 are engaged, the external dimensions of the product after the plug 1 and socket 2 are connected will not increase. Moreover, the first latch 12 and the second latch 21 can automatically lock and unlock very easily, enabling easy and quick plugging and unplugging of the plug 1 and socket 2. Furthermore, because the second latch 21 has a recessed slot structure, when the plug 1... After being plugged into the socket 2, the elastic buckle on the plug 1 will automatically sink into the recessed slot structure of the socket 2 under the action of elastic force, so that the fastening connection structure is hidden and does not occupy the external space of the plug 1 and socket 2 products. In addition, the second buckle 21 can also be an elastic buckle, and the first buckle 12 is a slot provided on the side wall of the plug 1 facing the socket 2. Similarly, the fastening connection structure can be hidden inside the socket 2 and plug 1 products. This is an equivalent replacement structure that can be easily conceived by those skilled in the art based on this application and is within the protection scope of this application.

[0036] The elastic buckle includes a cantilever 112 integrally formed on the side wall of the plug 1 facing the socket 2 and a barb 111 provided at the end of the cantilever 112. The barb 111 can be accommodated in the recessed groove of the socket 2 and hooked on the side wall of the recessed groove facing the plug 1. The root of the cantilever 113 extends into the cavity structure 11 of the plug 1 through the first opening. An inclined contact surface 118 is formed on the lower surface of the cantilever 112. A hollow structure 114 is formed on the root of the cantilever 113 facing the inclined contact surface 118. The top block 37 can be slidably inserted into the hollow structure 114 and closely abuts the inclined contact surface 118 of the root of the cantilever 113. The elastic buckle adopts a barb 111 structure. When the plug 1 is inserted into the socket 2, the barb 111 structure contacts the edge of the socket 2 through the inclined surface, and can be smoothly lifted to avoid it. When it enters the recessed slot structure of the socket 2, it automatically gets into the recessed slot structure of the socket 2 under the elastic action of its cantilever 112 and hooks into it. The elastic buckle adopts this structure and can be integrally formed on the plug 1, which is convenient to form. When it is released, the top block 37 slides against the inclined contact surface 118 on the lower side of the cantilever 112, so that the end of the cantilever 112 is tilted upward, thereby causing the barb 111 to disengage from the recessed slot.

[0037] The plug 1 is located on the lower side of the cavity structure 11 and has a bolt receiving hole extending along the insertion direction of the plug 1 and the socket 2. An auxiliary screw 16 is inserted into the bolt receiving hole, which can rotate circumferentially and slide a set distance axially. The auxiliary screw 16 extends a set distance from the side of the plug 1 facing the socket 2. The side wall of the socket 2 facing the plug 1 has a connecting threaded hole, and the auxiliary screw 16 can be movably screwed into the connecting threaded hole. After the plug 1 and the socket 2 are inserted, they are connected by the first buckle 12 and the second buckle 21, and can also be screwed into the connecting threaded hole in the socket 2 by the auxiliary screw 16, achieving double locking. The connecting threaded hole in the socket 2 can be formed by embedding a nut 23 inside a smooth hole. The above structure is located below the cavity structure 11 of the plug 1, making full use of the internal space of the plug 1 and the socket 2 without increasing the external dimensions of the plug 1 and the socket 2.

Claims

1. A terminal block with a locking handle, comprising a plug (1) and a socket (2), wherein the plug is capable of being plugged into the socket to achieve electrical conduction, the plug is provided with a first latch (12), and the socket is provided with a second latch (21), wherein the first latch and the second latch are capable of being engaged and connected, characterized in that: The plug has a cavity structure (11) with a first opening and a second opening. The second opening is located above the cavity structure. One end of the first buckle extends into the cavity structure through the first opening. A locking handle (3) is also provided. The locking handle includes a connecting plate (33), a pressing surface (31), an elastic support foot (34), and a top block (37). The connecting plate is installed in the cavity structure of the plug and can slide a set distance along its extension direction. One end of the connecting plate extends from the second opening of the cavity structure to the outer side above the plug. The pressing surface is fixedly installed on the upper end of the connecting plate. The upper pressing surface stops on the outer surface of the upper end of the plug. The elastic support foot, which can deform elastically, is fixedly installed at the lower end of the connecting plate. The two ends of the elastic support foot extend in opposite directions from the lower end of the connecting plate. The elastic support foot and the connecting plate together form a Y-shaped structure. One or both ends of the elastic support foot are tightly pressed against the lower side wall surface of the cavity structure. The top block is fixedly installed on the lower end of the connecting plate or on one end of the elastic support foot that is tightly pressed against the lower side wall surface of the cavity structure. The top block can slide along the side wall of the plug cavity structure toward the first opening. The sliding of the top block can press against the first buckle and force the first buckle to disengage from the second buckle.

2. The terminal block with locking handle according to claim 1, characterized in that: The elastic support leg has an arc-shaped structure, and the other end of the connecting plate is fixedly connected to the middle of the convex arc surface of the elastic support leg.

3. The terminal block with a locking handle according to claim 1 or 2, characterized in that: A sliding plate (36) is fixedly provided at one end of the elastic support leg. A slide rail (117) extending along the sliding direction of the top block is provided on the lower side wall surface of the plug cavity structure. The sliding plate is slidably inserted into the slide rail, and the top block is fixedly installed on the sliding plate.

4. The terminal block with a locking handle according to claim 3, characterized in that: The other end of the elastic support leg is positioned within the cavity structure of the plug, moving along the sliding direction of the top block.

5. The terminal block with a locking handle according to claim 4, characterized in that: The plug has two parallel, downward-extending limiting baffles (115) in its cavity structure. A slide is formed between the two limiting baffles for the connecting plate to slide into. There is a set gap between the side wall of the slide along the sliding direction of the top block and the connecting plate. The other end of the elastic support leg is fixedly positioned to the side wall of the plug's cavity structure.

6. The terminal block with a locking handle according to claim 1, characterized in that: The side wall of the connecting plate is also provided with an anti-detachment protrusion structure (38), which stops the inner surface of the upper end of the plug cavity structure.

7. The terminal block with a locking handle according to claim 1, characterized in that: Anti-displacement grooves (116) are formed on both sides of the second opening of the plug cavity structure, and anti-displacement protrusions (39) are provided on both sides of the upper end of the connecting plate. The anti-displacement protrusions can be inserted into the anti-displacement grooves.

8. The terminal block with a locking handle according to claim 1, characterized in that: The second buckle is a recessed groove structure on the upper surface of the socket, and the first buckle is an elastic buckle on the side wall facing the plug towards the socket. The elastic buckle can be inserted into the recessed groove structure on the upper surface of the socket under the action of elastic force. The recessed groove structure stops on the surface of the elastic buckle along the side wall in the direction of plug and socket pull-out. The top block of the locking handle can drive the elastic buckle to overcome the elastic force and move out of the recessed groove of the socket.

9. The terminal block with a locking handle according to claim 8, characterized in that: The elastic buckle includes a cantilever (112) integrally formed on the side wall of the plug facing the socket and a barb (111) provided at the end of the cantilever. The barb can be accommodated in the recessed slot of the socket and hooked to the side wall of the recessed slot facing the plug. The root of the cantilever (113) extends into the cavity structure of the plug through the first opening. An inclined contact surface (118) is formed on the lower surface of the cantilever. A hollow structure (114) is formed at the root of the cantilever that is directly opposite to the inclined contact surface. The top block can be slidably inserted into the hollow structure and closely abuts against the inclined contact surface of the root of the cantilever.

10. The terminal block with a locking handle according to claim 1, characterized in that: The plug is located on the lower side of the cavity structure and is provided with a bolt receiving hole extending along the plug and socket insertion direction. An auxiliary screw (16) is inserted into the bolt receiving hole, which can rotate in the circumferential direction and slide a set distance in the axial direction. The auxiliary screw extends a set distance from the side of the plug facing the socket. The side wall of the socket facing the plug is provided with a connecting threaded hole, and the auxiliary screw can be movably screwed into the connecting threaded hole.

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