Push-pull type unlocking structure of terminal block

Abstract

The utility model discloses a push-pull type unlocking structure of a terminal block, one side surface of a plugging body is provided with a clamping hook body capable of moving along a direction perpendicular to the side surface, and when the plugging body is plugged with a fixed end of the terminal block, the clamping hook body and a clamping point on the clamping hook body can be inserted into a clamping groove of the fixed end of the terminal block. An elastic structure is arranged between the plugging body and the clamping hook body and provides elastic force for the clamping hook body in the moving direction of the clamping hook body so that the clamping points on the clamping hook body can be connected with the buckles on the side walls of the clamping grooves in a buckled mode, and the push-pull rod installed on the surface of one side of the plugging body can slide by a set distance in a reciprocating mode along the surface of one side of the plugging body. The second extrusion inclined plane on the push-pull rod extrudes the first extrusion inclined plane on the clamping hook body along with the sliding of the push-pull rod to force the clamping hook body to move, so that the clamping point is released from the clamping buckle, the clamping point can be released and unlocked in a narrow space, the operation is convenient and labor-saving, and the flexible design of the terminal block is facilitated.

Description

Technical Field

[0001] This utility model relates to a terminal block, and more particularly to a push-pull unlocking structure for a terminal block. Background Technology

[0002] After the pluggable terminal block is plugged in and the fixed end is connected, the elastic hook body on the pluggable terminal block is inserted into the slot of the fixed end of the terminal block. At the same time, the locking point on the hook body is engaged with the buckle on the side wall of the slot to achieve positioning, thereby stopping and positioning the pluggable terminal block and the fixed end of the terminal block, preventing the pluggable terminal block from being accidentally pulled out by external force or loosened by vibration.

[0003] Currently, the latch body of the terminal block plug-in end adopts a cantilever structure to achieve elastic swing. When unlocking, the latch body needs to be pressed to unlock.

[0004] Due to limitations in plastic molding, the hook structure of some terminal blocks can only be installed on the side of the terminal block with the plug-in end facing the PCB board. This can easily interfere with the PCB board, making it unsuitable for many occasions and inconvenient to operate. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a terminal block push-pull unlocking structure. This terminal block push-pull unlocking structure can achieve locking and unlocking in a narrow space, can be used for various types of terminal blocks, and the unlocking operation is convenient and labor-saving.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a terminal block push-pull unlocking structure, including a plug-in body and a push-pull rod. One side surface of the plug-in body is provided with a hook body capable of moving in a direction perpendicular to that side surface. The hook body has a locking point. When the plug-in body is inserted into the fixed end of the terminal block, the hook body and its locking point can be inserted into the slot of the fixed end of the terminal block. An elastic structure is also provided between the plug-in body and the hook body. This elastic structure provides an elastic force to the hook body along its direction of movement, causing the locking point on the hook body to engage with the latch on the side wall of the slot. The push-pull rod is mounted on one side surface of the plug-in body and can slide back and forth along one side surface of the plug-in body for a set distance. The hook body is also provided with a first pressing slope that has an angle between its movement direction and the movement direction of the push-pull rod. The push-pull rod is provided with a second pressing slope that is parallel to the first pressing slope. The second pressing slope and the first pressing slope are tightly fitted together. Pushing and pulling the push-pull rod can cause the second pressing slope to press the first pressing slope, thereby forcing the hook body to overcome the elastic force of the elastic structure and move in the opposite direction, so that the locking point on the hook body is disengaged from the buckle on the fixed end of the terminal block.

[0007] As a further improvement of this utility model, the hook body is a cantilever structure integrally formed on one side surface of the plug-in body. The cantilever structure can elastically swing at a set angle along the direction perpendicular to one side surface of the plug-in body. The locking point is located on the side wall of the free end of the cantilever structure, and an elastic structure is formed at the root of the cantilever structure.

[0008] As a further improvement of this utility model, the locking point is a barb structure protruding from the surface of the free end of the cantilever structure, and the buckle on the inner side wall of the slot on the fixed end of the terminal block is a boss, and the locking point of the barb structure can hook onto the side wall of the boss.

[0009] As a further improvement of this utility model, a push-pull slide is provided on one side surface of the plug-in body, the push-pull rod is inserted into the push-pull slide, the push-pull rod can slide along the push-pull slide for a set distance, and a pressing protrusion parallel to one side surface of the plug-in body is formed on one end side wall of the push-pull rod, the pressing protrusion covers the surface of the hook body, and a second pressing inclined surface is provided on the surface of the pressing protrusion facing the hook body.

[0010] As a further improvement of this utility model, the hook body is provided with a raised pressure protrusion, the first extrusion inclined surface is provided on the surface of the pressure protrusion, the pressure protrusion is located on the side wall of the end with the higher height of the first extrusion inclined surface and is transitionally connected to one side surface of the hook body through a stop inclined surface, and the extrusion protrusion on the push-pull rod can be stopped on the surface of the stop inclined surface after passing the pressure protrusion through the first extrusion inclined surface.

[0011] As a further improvement of this utility model, one side surface of the hook body is an inclined surface that makes the height of the free end of the cantilever structure lower than the height of the root. The inclined surface and the stop inclined surface are connected by an arc-shaped concave surface. The end face of the extrusion protrusion on one side wall of the push-pull rod and the second extrusion inclined surface together form a pointed protrusion structure. The end of the pointed protrusion structure is provided with a convex arc surface. The pointed protrusion structure and the convex arc surface at its end can be accommodated in the V-shaped groove structure with an arc-shaped concave bottom formed between one side surface of the hook body and the stop inclined surface.

[0012] As a further improvement of this utility model, two hook bodies are provided parallel to each other on one side surface of the plug-in body, and a U-shaped channel for the push-pull rod to slide is formed between the two hook bodies. A pair of L-shaped stop blocks are also provided on one side surface of the plug-in body. One side wall of the L-shaped stop block stops the push-pull rod located in the U-shaped channel on the side facing the U-shaped opening. The push-pull rod is also limited in sliding distance by a long slot and a protruding column structure.

[0013] As a further improvement of this utility model, one end of the push-pull rod is provided with a handle fixing rib protruding towards the side surface of the plug-in body. One end of the side surface of the plug-in body is formed with a notch-shaped fixing rib groove. The handle fixing rib at one end of the push-pull rod can be slidably inserted into the fixing rib groove, and the handle fixing rib stops on the bottom surface of the fixing rib groove along its sliding direction. The side wall of the push-pull rod facing the side surface of the plug-in body is also provided with a handle anti-disengagement groove. One end of the side surface of the plug-in body is provided with an inverted protrusion with a straight surface and the other end being inclined. The inverted protrusion can be slidably inserted into the handle anti-disengagement groove on the push-pull rod, and the flat surface of the inverted protrusion stops on the inner side surface of the handle anti-disengagement groove along its sliding direction.

[0014] As a further improvement of this utility model, one end of the push-pull rod is also provided with a pull handle or a push-press protrusion. Both the pull handle and the push-press protrusion can extend outward of one end of the plug-in body by a set distance. The push-press protrusion has a pressing slope formed on it for the fingers to press and slide towards the outside of one end of the plug-in body.

[0015] As a further improvement of this utility model, a handle reset guide rib is also provided on one side surface of the plug-in body. The handle reset guide rib is provided with a reset slope that is inclined along the sliding direction of the push-pull rod. The push-pull rod is provided with an elastic reset arm with a cantilever structure. The elastic reset arm is provided with a guide slide post. The guide slide post can slide along the reset slope on the handle reset guide rib. When the push-pull rod slides in the direction that makes the locking point and the buckle disengage, the guide slide post slides along the reset slope, causing the elastic reset arm to elastically deform.

[0016] The beneficial effects of this utility model are as follows: This utility model uses a push-pull rod to slide parallel to the surface of the terminal block insertion end, thereby driving the movement of the hook body and unlocking the terminal block insertion end and the fixed end. This structure can achieve the locking point release and unlocking function in a narrow space. This utility model also designs a locking stop structure on the hook body to fix the locking point position, decompose the locking point release and insertion / removal steps, and facilitate operation. The sliding mode of the push-pull rod of this application can adopt a pull structure or a press structure, which is more labor-saving than the traditional unlocking operation. This application can place the hook structure on any side of the product according to the different usage requirements of each user, which facilitates the flexible design of the terminal block. Attached Figure Description

[0017] Figure 1 This is the front view of the first type of push-pull rod of this utility model;

[0018] Figure 2 This is a left view of the first type of push-pull rod of this utility model;

[0019] Figure 3 This is a top view of the first type of push-pull rod of this utility model;

[0020] Figure 4 This is a rear view of the first type of push-pull rod of this utility model;

[0021] Figure 5 for Figure 4 Sectional view along line AA;

[0022] Figure 6 This is a front view of the first plug-in body of this utility model;

[0023] Figure 7 for Figure 6 Sectional view along the BB direction;

[0024] Figure 8 This is a top view of the first plug-in body of this utility model;

[0025] Figure 9 This is a right view of the first plug-in body of this utility model;

[0026] Figure 10 This is a front view of the first assembly structure of this utility model;

[0027] Figure 11 This is a top view of the first assembly structure of this utility model;

[0028] Figure 12 for Figure 11 C-axis sectional view;

[0029] Figure 13 for Figure 11 Sectional view along the DD direction;

[0030] Figure 14 This is a right view of the first assembly structure of this utility model;

[0031] Figure 15 This is a front view of the first structure of this utility model in the plug-in state of the terminal block fixing end;

[0032] Figure 16 for Figure 15 EE-directed sectional view;

[0033] Figure 17 This is a diagram showing the unlocked state of the first structure of this utility model;

[0034] Figure 18 This is the front view of the second type of push-pull rod of this utility model;

[0035] Figure 19 This is a right view of the second type of push-pull rod of this utility model;

[0036] Figure 20 This is a top view of the second type of push-pull rod of this utility model;

[0037] Figure 21 This is a rear view of the second type of push-pull rod of this utility model;

[0038] Figure 22 for Figure 21 Sectional view along the FF direction;

[0039] Figure 23 for Figure 21 Central GG-direction sectional view;

[0040] Figure 24 This is a front view of the second type of plug-in body of this utility model;

[0041] Figure 25 for Figure 24 Sectional view along the HH direction;

[0042] Figure 26 This is a top view of the second type of plug-in body of this utility model;

[0043] Figure 27 This is a right view of the second type of plug-in body of this utility model;

[0044] Figure 28 This is a front view of the second assembly structure of this utility model;

[0045] Figure 29 This is a top view of the second assembly structure of this utility model;

[0046] Figure 30 for Figure 29 Sectional view in the middle II direction;

[0047] Figure 31 This is a right view of the second assembly structure of this utility model;

[0048] Figure 32 This is a front view of the second structure of this utility model in the locked state;

[0049] Figure 33 This is a right view of the second structure of this utility model in the locked state;

[0050] Figure 34 This is a front view of the unlocked state of the second structure of this utility model;

[0051] Figure 35 Right view of the unlocked state of the second structure of this utility model. Detailed Implementation

[0052] Example: A push-pull unlocking structure for a terminal block includes a plug-in body 1 and a push-pull rod 2. One side surface of the plug-in body 1 is provided with a hook body 3 capable of moving in a direction perpendicular to that side surface. The hook body 3 has a locking point 31. When the plug-in body 1 is plugged into the fixed end 4 of the terminal block, the hook body 3 and its locking point 31 can be inserted into the slot 41 of the fixed end 4 of the terminal block. An elastic structure is also provided between the plug-in body 1 and the hook body 3. This elastic structure provides an elastic force to the hook body 3 along its direction of movement, causing the locking point 31 on the hook body 3 to engage with the latch 42 on the side wall of the slot 41. The push-pull rod 2 is mounted on the plug-in body 1. On one side surface of the pull-out body 1, and the push-pull rod 2 can slide back and forth along one side surface of the pull-out body 1 for a set distance, the hook body 3 is also provided with a first pressing slope 321 that has an angle between its movement direction and the movement direction of the push-pull rod 2, and the push-pull rod 2 is provided with a second pressing slope 211 that is parallel to the first pressing slope 321. The second pressing slope 211 is tightly fitted with the first pressing slope 321. Pushing and pulling the push-pull rod 2 can cause the second pressing slope 211 to press the first pressing slope 321, thereby forcing the hook body 3 to overcome the elastic force of the elastic structure and move in the opposite direction, so that the locking point 31 on the hook body 3 is disengaged from the buckle 42 on the fixed end 4 of the terminal block.

[0053] When the plug-in end of the terminal block is plugged into the fixed end 4, the hook body 3 on the plug-in body 1 is also inserted into the slot 41 of the fixed end 4 of the terminal block. After the plug-in end and the fixed end 4 are plugged into place, the locking point 31 on the hook body 3 is just engaged with the buckle 42 on the side wall of the slot 41. Under the elastic force of the elastic structure, the locking point 31 and the buckle 42 remain in the engaged state. When it is necessary to remove the plug-in end from the fixed end 4, first slide the push-pull rod 2. The second pressing slope 211 on the push-pull rod 2 will press the first pressing slope 321 on the hook body 3, thereby forcing the hook body 3 to move. When the push-pull rod 2 slides into place, the hook body 3 moves to the position where the locking point 31 and the buckle 42 are disengaged. At this time, the plug-in end can be pulled outward. The above structure can be set on any side wall of the terminal block. When using it, there is no need to press the hook body 3 with force. Just push and pull the push-pull rod 2. It can be used in narrow spaces, is easy to operate, and saves effort.

[0054] The hook body 3 is a cantilever structure integrally formed on one side surface of the plug-in body 1. The cantilever structure can elastically swing at a set angle along the direction perpendicular to one side surface of the plug-in body 1. The locking point 31 is located on the side wall of the free end of the cantilever structure, and an elastic structure is formed at the root of the cantilever structure. The hook body 3 adopts a cantilever structure, which drives the locking point 31 to move by swinging up and down, and achieves elastic reset by the elastic force at its root. The structure is simple and can be integrally formed on the surface of the plug-in body 1. In addition, the hook body 3 can also be assembled on the surface of the plug-in body 1 by sliding installation, and the elastic reset force is provided by a spring. This is an equivalent replacement structure that can be easily conceived by those skilled in the art based on this application, and it falls within the scope of protection of this patent.

[0055] The locking point 31 is a barb structure protruding from the surface of the free end of the cantilever structure. The buckle 42 on the inner side wall of the slot 41 on the fixed end 4 of the terminal block is a boss. The locking point 31 of the barb structure can hook onto the side wall of the boss. A stable fastening connection is achieved by the barb structure hooking onto the boss. The structure is simple. Alternatively, the buckle can hook onto the groove or the protrusion can insert into the recess. These are equivalent replacement structures that can be easily conceived by those skilled in the art based on this application and are within the scope of protection of this patent.

[0056] The insertion / removal body 1 has a push-pull slide on one side surface. The push-pull rod 2 is inserted into the push-pull slide and can slide along the push-pull slide for a set distance. A pressing protrusion 21 parallel to one side surface of the insertion / removal body 1 is formed on one end side wall of the push-pull rod 2. The pressing protrusion 21 covers the surface of the hook body 3. A second pressing inclined surface 211 is provided on the surface of the pressing protrusion 21 facing the hook body 3.

[0057] The hook body 3 is provided with a raised pressure-receiving protrusion 32. The first pressing slope 321 is provided on the surface of the pressure-receiving protrusion 32. The side wall of the pressure-receiving protrusion 32, which is located at the higher end of the first pressing slope 321, is transitionally connected to one side surface of the hook body 3 through a stop slope 322. After the pressing protrusion 21 on the push-pull rod 2 passes the pressure-receiving protrusion 32 via the first pressing slope 321, it can be stopped on the surface of the stop slope 322. When the pressing protrusion 21 on the push-pull rod 2 passes the pressure-receiving protrusion 32, the pressing protrusion 21 will be blocked by the stop slope 322, keeping it in the unlocked position, which facilitates the outward pulling of the insertion end. When the insertion end is inserted into the fixed end 4 again, the push-pull rod 2 is pushed, and the pressing protrusion 21 on the push-pull rod 2 can move in the opposite direction along the stop slope 322 back to the locked state. This structure can separate the release of the locking point 31 and the insertion and removal steps, which is convenient for operation.

[0058] One side surface of the hook body 3 is an inclined surface that makes the height of the free end of the cantilever structure lower than the height of the root. The inclined surface and the stop inclined surface 322 are connected by an arc-shaped concave surface. The end face of the extrusion protrusion 21 on one side wall of the push-pull rod 2 and the second extrusion inclined surface 211 together form a pointed protrusion structure. The end of the pointed protrusion structure is provided with a convex arc surface. The pointed protrusion structure and the convex arc surface at its end can be accommodated in the V-shaped groove structure with an arc-shaped concave bottom formed between one side surface of the hook body 3 and the stop inclined surface 322.

[0059] Two hook bodies 3 are provided parallel to each other on one side surface of the plug-in body 1, forming a U-shaped channel between the two hook bodies 3 for the push-pull rod 2 to slide. A pair of L-shaped stop blocks 11 are also provided on one side surface of the plug-in body 1. One side wall of the L-shaped stop block 11 stops the push-pull rod 2 located in the U-shaped channel facing the U-shaped opening. The push-pull rod 2 is also limited in its sliding distance by a long slot and a protruding post structure that slide relative to each other. The U-shaped channel formed by the two hook bodies 3, and the two L-shaped stop blocks 11 blocking the push-pull rod 2, allow the push-pull rod 2 to slide on the plug-in body 1.

[0060] The push-pull rod 2 has a handle fixing rib 22 protruding towards one side surface of the plug-in body 1. One end of one side surface of the plug-in body 1 has a notch-shaped fixing rib groove 12. The handle fixing rib 22 at one end of the push-pull rod 2 can be slidably inserted into the fixing rib groove, and the handle fixing rib 22 stops on the bottom surface of the fixing rib groove along its sliding direction. The side wall of the push-pull rod 2 facing the plug-in body 1 is also provided with a handle anti-disengagement groove 23. One side surface of the plug-in body 1 has an inverted protrusion 13 with one end being straight and the other end being inclined. The inverted protrusion 13 can be slidably inserted into the handle anti-disengagement groove 23 on the push-pull rod 2, and the flat surface of the inverted protrusion stops on the inner side surface of the handle anti-disengagement groove 23 along its sliding direction. While the handle fixing rib 22 slides within the notched fixing rib groove 12, the bottom of the notched fixing rib groove 12 blocks the handle fixing rib 22. Additionally, the inverted protrusion 13 on the plug-in body 1 slides within the handle anti-detachment groove 23 of the push-pull rod 2. Simultaneously, the side wall of the handle anti-detachment groove 23 blocks the inverted protrusion 13. This limits the sliding distance of the push-pull rod 2 on the plug-in body 1, preventing the push-pull rod 2 from detaching from the plug-in body 1. Furthermore, this structure facilitates the assembly of the push-pull rod 2. The push-pull rod 2 can also be equipped with a handle anti-detachment point 3127 with a cantilever structure. Correspondingly, a handle anti-detachment groove 15 is provided on one side surface of the plug-in body 1. During assembly, the handle anti-detachment point 31 on the push-pull rod 2 is inserted into the handle anti-detachment groove on one side surface of the plug-in body 1, thus preventing the push-pull rod 2 from detaching.

[0061] One end of the push-pull rod 2 is also provided with a pull handle 24 or a push-press protrusion 25. Both the pull handle and the push-press protrusion can extend a certain distance beyond one end of the plug-in body 1. The push-press protrusion has a pressing slope 251 formed on it, which allows a finger to press and slide it toward the outside of one end of the plug-in body 1. The push-pull rod 2 can be pulled out by pulling it from the side of the plug-in body 1 using the pull handle, or it can be forced to slide by pressing the pressing slope 251 on the surface of the push-press protrusion. The two methods can be selected according to the usage position and operating space of the terminal block.

[0062] The plug-in / plug body 1 also has a handle reset guide rib 14 on one side surface. The handle reset guide rib 14 has a reset slope 141 that is inclined along the sliding direction of the push-pull rod 2. The push-pull rod 2 has a cantilever elastic reset arm 26. The elastic reset arm 26 has a guide slide post 261. The guide slide post 261 can slide along the reset slope 141 on the handle reset guide rib 14. When the push-pull rod 2 slides in the direction that disengages the locking point 31 from the buckle 42, the guide slide post 261 slides along the reset slope 141, causing the elastic reset arm 26 to elastically deform. The elastic reset arm 26 provides a reset force to the guide slide post 261, so that the push-pull rod 2 can automatically reset to the locked state during use, preventing the plug-in end of the terminal block from being forgotten to lock after being plugged into the fixed end 4.

Claims

1. A terminal block push-pull unlocking structure, characterized in that: The device includes a plug-in body (1) and a push-pull rod (2). One side surface of the plug-in body is provided with a hook body (3) capable of moving in a direction perpendicular to that side surface. The hook body has a locking point (31). When the plug-in body is inserted into the fixed end (4) of the terminal block, the hook body and its locking point can be inserted into the slot (41) of the fixed end of the terminal block. An elastic structure is also provided between the plug-in body and the hook body. This elastic structure provides elastic force to the hook body along its direction of movement, causing the locking point on the hook body to engage with the latch (42) on the side wall of the slot. The push-pull rod is installed... On one side surface of the plug-in body, and the push-pull rod can slide back and forth along one side surface of the plug-in body for a set distance, the hook body is also provided with a first pressing slope (321) that has an angle with both its movement direction and the movement direction of the push-pull rod, and the push-pull rod is provided with a second pressing slope (211) that is parallel to the first pressing slope. The second pressing slope and the first pressing slope are closely fitted together. Pushing and pulling the push-pull rod can cause the second pressing slope to press the first pressing slope, thereby forcing the hook body to overcome the elastic force of the elastic structure and move in the opposite direction, so that the locking point on the hook body is disengaged from the locking end of the terminal block.

2. The terminal block push-pull unlocking structure according to claim 1, characterized in that: The hook body is a cantilever structure integrally formed on one side surface of the plug-in body. The cantilever structure can elastically swing at a set angle along the direction perpendicular to one side surface of the plug-in body. The locking point is located on the side wall of the free end of the cantilever structure, and an elastic structure is formed at the root of the cantilever structure.

3. The terminal block push-pull unlocking structure according to claim 2, characterized in that: The locking point is a barbed structure protruding from the surface of the free end of the cantilever structure. The buckle on the inner side wall of the slot on the fixed end of the terminal block is a boss. The locking point of the barbed structure can hook onto the side wall of the boss.

4. The terminal block push-pull unlocking structure according to claim 1 or 2, characterized in that: A push-pull slide is provided on one side surface of the plug-in body. The push-pull rod is inserted into the push-pull slide and can slide along the push-pull slide for a set distance. A pressing protrusion (21) parallel to one side surface of the plug-in body is formed on one end side wall of the push-pull rod. The pressing protrusion covers the surface of the hook body. A second pressing inclined surface is provided on the surface of the pressing protrusion facing the hook body.

5. The terminal block push-pull unlocking structure according to claim 4, characterized in that: The hook body is provided with a raised pressure protrusion (32), and the first extrusion slope is provided on the surface of the pressure protrusion. The side wall of the end of the first extrusion slope with a higher height is connected to the side surface of the hook body through a stop slope (322). After the extrusion protrusion on the push-pull rod passes the pressure protrusion through the first extrusion slope, it can stop on the surface of the stop slope.

6. The terminal block push-pull unlocking structure according to claim 5, characterized in that: One side surface of the hook body is an inclined surface that makes the height of the free end of the cantilever structure lower than the height of the root. The inclined surface and the stop inclined surface are connected by an arc-shaped concave surface. The end face of the extrusion protrusion on one side wall of the push-pull rod and the second extrusion inclined surface together form a pointed protrusion structure. The end of the pointed protrusion structure is provided with a convex arc surface. The pointed protrusion structure and the convex arc surface at its end can be accommodated in the V-shaped groove structure with an arc-shaped concave bottom formed between one side surface of the hook body and the stop inclined surface.

7. The terminal block push-pull unlocking structure according to claim 4, characterized in that: Two hook bodies are provided parallel to each other on one side surface of the plug-in body, and a U-shaped channel for the push-pull rod to slide is formed between the two hook bodies. A pair of L-shaped stop blocks (11) are also provided on one side surface of the plug-in body. One side wall of the L-shaped stop block stops the push-pull rod located in the U-shaped channel on the side facing the U-shaped opening. The push-pull rod is also limited in sliding distance by a long slot and a protruding column structure.

8. The terminal block push-pull unlocking structure according to claim 7, characterized in that: One end of the push-pull rod is provided with a handle fixing rib (22) protruding towards the side surface of the plug-in body. One end of the side surface of the plug-in body is formed with a notch-shaped fixing rib groove (12). The handle fixing rib at one end of the push-pull rod can be slidably inserted into the fixing rib groove, and the handle fixing rib stops on the bottom surface of the fixing rib groove along its sliding direction. The side wall of the push-pull rod facing the side surface of the plug-in body is also provided with a handle anti-disengagement groove (23). One end of the side surface of the plug-in body is provided with an inverted protrusion (13) with a straight surface and the other end being a sloping surface. The inverted protrusion can be slidably inserted into the handle anti-disengagement groove on the push-pull rod, and the flat surface of the inverted protrusion stops on the inner side surface of the handle anti-disengagement groove along its sliding direction.

9. The terminal block push-pull unlocking structure according to claim 1, characterized in that: One end of the push-pull rod is also provided with a pull handle (24) or a push-press protrusion (25). Both the pull handle and the push-press protrusion can extend outward of one end of the plug-in body by a set distance. The push-press protrusion has a pressing slope (251) formed on it for the fingers to press and slide towards the outside of one end of the plug-in body.

10. The terminal block push-pull unlocking structure according to claim 9, characterized in that: The plug-in body is also provided with a handle reset guide rib (14) on one side surface. The handle reset guide rib is provided with a reset slope (141) that is inclined along the sliding direction of the push-pull rod. The push-pull rod is provided with a cantilever elastic reset arm (26). The elastic reset arm is provided with a guide slide (261). The guide slide can slide along the reset slope on the handle reset guide rib. When the push-pull rod slides in the direction that makes the locking point and the buckle disengage, the guide slide slides along the reset slope, causing the elastic reset arm to elastically deform.

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