A plug-in terminal for a printed circuit board

Abstract

The application belongs to the field of wiring terminals, in particular to a plug-in wiring terminal of a printed circuit board, which comprises a wiring terminal body, a plurality of terminal insertion holes are formed in the wiring terminal body, a rectangular slot is formed at the front end of the wiring terminal body, a shielding mechanism is arranged in the rectangular slot, the shielding mechanism comprises two groups of moving plates, a movable slot is formed in the moving plate, a fixed baffle is slidably connected in the movable slot, the fixed baffle is designed in a semicircular shape, a plug rod is fixedly connected to the fixed baffle, a fixed ring is fixedly connected to the position of the plug rod close to the fixed baffle, and the diameter of the fixed ring is greater than the width of the movable slot; through the structural design of the shielding mechanism, when the terminal insertion hole is not plugged with a wire, the terminal insertion hole can be shielded, so as to separate the terminal insertion hole from the external environment, so as to reduce the adhesion of external dust on the terminal insertion hole, and then keep the terminal insertion hole clean, and avoid that the unused terminal insertion hole needs to be cleaned regularly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wiring terminal, in particular to a kind of printed circuit board plug-in wiring terminal. BACKGROUND

[0002] Wiring terminal is a kind of fittings for electrical connection, can provide reliable electrical connection, wiring terminal has multiple different types, and plug-in wiring terminal is welded on printed circuit board after being fixed by pressing wiring.

[0003] A kind of printed circuit board plug-in wiring terminal of existing one, including insulating shell, several groups of metal plug-in post and insert piece being connected with the outer wall of insulating shell, several groups of recesses being arranged on insulating shell, wire terminal being installed in recess, connecting piece being connected with wire terminal and being connected with external wire;Wire terminal includes terminal body, two groups of pins being arranged on both sides of terminal body and extending downward, threaded hole being arranged on terminal body, two groups of pins are fixedly connected with insulating shell;Connecting piece includes conductive tab, sleeve hole being arranged at the front end of conductive tab and winding hole at the rear end, protective cylinder being sleeved at the rear end of conductive tab, sleeve hole corresponds with threaded hole, connecting piece is fixedly connected with wire terminal by mechanical fixing piece;Wire copper is wound in winding hole, and insulating protective cylinder covers and protects winding hole and seals it.The present application makes wire and terminal combination stable, can effectively avoid falling off while protecting conductive copper wire.

[0004] But the printed circuit board plug-in wiring terminal in the above-mentioned technology, in actual application, the terminal jack on the wiring terminal is not all inserted with wiring, and some terminal jacks are reserved for possible future connection needs, since the terminal jack of wiring terminal is directly exposed to external environment, therefore, dust in the external environment is easy to accumulate on the terminal jack, and regular cleaning is needed, which is more troublesome;Therefore, aiming at the above problems, a kind of printed circuit board plug-in wiring terminal is proposed. SUMMARY

[0005] In order to make up for the deficiency of prior art, solve the problem that the existing printed circuit board plug-in wiring terminal is directly exposed to external environment, therefore, dust in the external environment is easy to accumulate on the terminal jack, and regular cleaning is needed, which is more troublesome, the present application proposes a kind of printed circuit board plug-in wiring terminal.

[0006] The technical scheme adopted by the present application to solve its technical problems is: a plug-in wiring terminal of a printed circuit board, comprising a wiring terminal body, a plurality of terminal insertion holes are formed in the wiring terminal body, a rectangular groove is formed at the front end of the wiring terminal body, a shielding mechanism is arranged in the rectangular groove, the shielding mechanism comprises two moving plates, a movable groove is formed in the moving plate, a fixed baffle is slidably connected in the movable groove, the fixed baffle is designed in a semicircular shape, a plug rod is fixedly connected to the fixed baffle, a fixed ring is fixedly connected to the position of the plug rod close to the fixed baffle, the diameter of the fixed ring is greater than the width of the movable groove, the fixed ring is in abutment with the moving plate, a supporting spring is fixedly connected to the fixed ring, the side of the supporting spring away from the fixed ring is fixedly connected with the inner wall of the rectangular groove, the side of the plug rod away from the fixed baffle is inserted into the plug-in groove, the plug-in groove is formed in the inner wall of the rectangular groove, a first circular hole is formed in the moving plate, the first circular hole penetrates through the moving plate, a mounting cover plate is fixedly connected to the inner wall of the rectangular groove, a second circular hole is formed in the mounting cover plate, the terminal insertion hole is aligned with the first circular hole and the second circular hole, and the radius of the second circular hole is slightly smaller than that of the first circular hole.

[0007] Preferably, the left and right sides of the moving plate are both provided with a slot, the inner wall of the slot is in abutment with the top block, the rear end of the top block is rotatably connected with the inner wall of the rectangular groove, the front end of the top block is fixedly connected with a rotating block, a vertical groove is formed in the rotating block, and the rotating block is rotatably connected in the through hole.

[0008] Preferably, the left and right sides of the moving plate are both rotatably connected with a pulley, and the side of the pulley away from the moving plate is in abutment with the inner wall of the rectangular groove.

[0009] Preferably, four fixed columns are fixedly connected to the fixed baffle, the fixed columns are designed in a long rectangular shape, and the fixed columns are in abutment with the inner wall of the movable groove.

[0010] Preferably, a sealing ring is fixedly connected to the inner wall of the first circular hole, the sealing ring is made of rubber material, and the sealing ring is in abutment with the rear end of the mounting cover plate.

[0011] Preferably, a push rod is fixedly connected to the front end of the fixed ring, the push rod is designed in an L shape, the push rod is slidably connected in the sliding groove, the sliding groove is formed in the mounting cover plate, and the push rod is in abutment with the front end of the mounting cover plate.

[0012] Preferably, the left and right sides of the moving plate are both fixedly connected with a pad, and the pad is made of rubber material.

[0013] Preferably, two guide rods are inserted into the moving plate, and the top end and the bottom end of the guide rod are fixedly connected with the inner wall of the rectangular groove.

[0014] Preferably, the rear end of the mounting cover plate is not in contact with the front end of the moving plate, and the left and right sides of the moving plate are not in contact with the inner wall of the rectangular groove.

[0015] Preferably, the slot is adapted to the shape of the top block, and an arc-shaped slot is formed in the middle of the slot.

[0016] The present application has the advantages of:

[0017] 1. The present application can shield the terminal socket when the terminal socket is not plugged with a wire through the structural design of the shielding mechanism, thereby separating the terminal socket from the external environment, reducing the adhesion of external dust on the terminal socket, maintaining the cleanliness of the terminal socket, avoiding the need for regular cleaning of unused terminal sockets, and solving the problem that the circuit board plug-in wiring terminal in the prior art is not always plugged with a wire, and some terminal sockets are reserved for possible future connection. Since the terminal socket of the wiring terminal is directly exposed to the external environment, dust from the external environment is likely to accumulate on the terminal socket, which needs to be cleaned regularly, which is troublesome.

[0018] 2. The present application can expose all terminal sockets by pushing the moving plate to both sides, or expose a group of terminal sockets by pushing the fixed baffle of the terminal sockets, while the remaining terminal sockets are still shielded by the fixed baffle, to meet the use requirements in different situations, making the process of connecting the wiring terminal main body and the wire more flexible. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0021] Figure 2 is a schematic view of the structure of the rectangular groove of the present application;

[0022] Figure 3 is a schematic view of the rear end structure of the mounting cover plate and the moving plate of the present application;

[0023] Figure 4 is a schematic view of the front end structure of the mounting cover plate and the moving plate of the present application;

[0024] Figure 5 Structure diagram of the shielding mechanism of the application.

[0025] In the figure: 1, terminal body; 20, terminal insertion hole; 21, rectangular groove; 22, mounting cover plate; 23, push rod; 24, supporting spring; 25, insertion rod; 26, fixed ring; 27, fixed baffle; 28, fixed column; 29, movable slot; 30, moving plate; 31, cushion block; 32, pulley; 33, notch; 34, top block; 35, rotating block; 36, sealing ring; 37, first circular hole; 38, through hole; 39, sliding groove; 40, second circular hole; 41, guide rod; 42, insertion slot. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0027] Please refer to Figure 1 - Figure 5 As shown in the figure, a plug-in terminal of a printed circuit board comprises a terminal body 1, a plurality of terminal insertion holes 20 are formed on the terminal body 1, a rectangular groove 21 is formed at the front end of the terminal body 1, a shielding mechanism is arranged in the rectangular groove 21, the shielding mechanism comprises two moving plates 30, a movable slot 29 is formed on the moving plate 30, a fixed baffle 27 is slidably connected in the movable slot 29, the fixed baffle 27 is designed in a semicircular shape, an insertion rod 25 is fixedly connected to the fixed baffle 27, a fixed ring 26 is fixedly connected to the position of the insertion rod 25 close to the fixed baffle 27, the diameter of the fixed ring 26 is greater than the width of the movable slot 29, the fixed ring 26 abuts against the moving plate 30, a supporting spring 24 is fixedly connected to the fixed ring 26, the side of the supporting spring 24 away from the fixed ring 26 is fixedly connected to the inner wall of the rectangular groove 21, the side of the insertion rod 25 away from the fixed baffle 27 is inserted into an insertion slot 42, the insertion slot 42 is formed on the inner wall of the rectangular groove 21, a first circular hole 37 is formed on the moving plate 30, the first circular hole 37 penetrates through the moving plate 30, a mounting cover plate 22 is fixedly connected to the inner wall of the rectangular groove 21, a second circular hole 40 is formed on the mounting cover plate 22, the terminal insertion hole 20 is aligned with the first circular hole 37 and the second circular hole 40, the radius of the second circular hole 40 is slightly smaller than that of the first circular hole 37.

[0028] The structure design of the shielding mechanism can shield the terminal jack 20 when the terminal jack 20 is not plugged with a wire, so as to separate the terminal jack 20 from the external environment, thereby reducing the adhesion of external dust on the terminal jack 20, and further keeping the terminal jack 20 clean, avoiding the need for regular cleaning of unused terminal jacks. When working, the two groups of moving plates 30 are in contact, the moving plate 30 is designed as a long rectangle and is adapted to the length of the rectangular groove 21, and the movable groove 29 is slidably connected with the fixed baffle 27, and the two groups of fixed baffles 27 can be spliced into a complete circle, and the radius of the fixed baffle 27 is adapted to the first circular hole 37, so as to ensure that the two groups of fixed baffles 27 can effectively shield the terminal jack 20 at the rear end of the fixed baffle 27, thereby reducing the adhesion of dust in the terminal jack 20 and keeping the terminal jack 20 clean. When the terminal jack 20 needs to be used, the moving plate 30 can be pushed to the two sides to move away from each other, and the moving plate 30 pushes the fixed ring 26 to move because the fixed ring 26 abuts against the moving plate 30. The fixed ring 26 is fixed on the insertion rod 25, the fixed ring 26 drives the insertion rod 25 to move, the insertion rod 25 drives the fixed baffle 27 to move, the two groups of fixed baffles 27 move away from each other, the support spring 24 sleeved on the insertion rod 25 is compressed, the side of the insertion rod 25 away from the fixed ring 26 is inserted into the insertion slot 42, the insertion slot 42 is arranged on the top and bottom of the inner wall of the rectangular groove 21, and the size of the insertion slot 42 is adapted to the insertion rod 25, so that the insertion rod 25 can be smoothly inserted into the insertion slot 42, and the movement of the insertion rod 25 is guided by the abutment between the inner wall of the insertion slot 42 and the insertion rod 25, so as to avoid the deviation of the insertion rod 25 during movement. At this time, the terminal jack 20 originally shielded by the two groups of fixed baffles 27 is exposed, and the wire can be smoothly inserted into the terminal jack 20, thereby completing the connection. The radius of the first circular hole 37 is slightly larger than that of the terminal jack 20, and the first circular hole 37 and the second circular hole 40 are aligned with the position of the terminal jack 20.

[0029] Further, the left and right sides of the moving plate 30 are provided with a slot 33, the inner wall of the slot 33 is attached to the top block 34, the rear end of the top block 34 is rotatably connected to the inner wall of the rectangular groove 21, the front end of the top block 34 is fixedly connected with a rotating block 35, the rotating block 35 is provided with a vertical slot, and the rotating block 35 is rotatably connected in the through hole 38.

[0030] When working, the two groups of moving plates 30 are in contact with each other to ensure that the fixed baffle plates 27 connected to the sliding groove 29 can keep in contact. The left and right sides of the moving plates 30 are provided with notches 33, which are in U-shaped design and are matched with the top blocks 34 in size. The top blocks 34 can be rotated in the notches 33 by rotating the rotating blocks 35. When the top blocks 34 are rotated, they will abut against the inner walls of the notches 33, thereby lifting the two groups of moving plates 30. When the top blocks 34 are in vertical state, they will push the two groups of moving plates 30 to move to the left and right sides, and the two groups of moving plates 30 will move away from each other to expose the terminal jack 20. A vertical groove is formed in the rotating block 35, which can facilitate the screwdriver to rotate the rotating block 35, thereby facilitating the rotation of the top block 34. The rotating block 35 is rotated in the through hole 38, and the front end of the rotating block 35 is kept horizontal with the surface of the mounting cover plate 22 to avoid the height difference between the front end of the rotating block 35 and the mounting cover plate 22. Meanwhile, the top block 34 can also limit the two groups of moving plates 30 to avoid the over-movement of one group of moving plates 30, which causes the first circular hole 37 in the moving plate 30 to be misaligned with the terminal jack 20.

[0031] Further, the left and right sides of the moving plate 30 are rotatably connected with pulleys 32, and the side away from the moving plate 30 abuts against the inner wall of the rectangular groove 21. When working, the pulleys 32 are rotatably connected to the left and right sides of the moving plate 30. When the moving plate 30 moves, the pulleys 32 will abut against the inner wall of the rectangular groove 21. The rotation of the pulleys 32 helps to keep the moving plate 30 stable when moving.

[0032] Further, the fixed baffle plate 27 is fixedly connected with four fixed columns 28, which are in long rectangular design and are attached to the inner wall of the sliding groove 29. When working, the fixed columns 28 are attached to the inner wall of the sliding groove 29. When the fixed baffle plate 27 is located in the sliding groove 29, the fixed columns 28 can prevent the fixed baffle plate 27 from shaking, thereby ensuring that the position of the fixed baffle plate 27 will not deviate.

[0033] Further, the inner wall of the first circular hole 37 is fixedly connected with a sealing ring 36 made of rubber material, and the sealing ring 36 abuts against the rear end of the mounting cover plate 22. When working, the sealing ring 36 is made of rubber material and abuts against the mounting cover plate 22. The deformation of the sealing ring 36 can improve the waterproof effect at the first circular hole 37 and the second circular hole 40. The radius of the first circular hole 37 is larger than that of the second circular hole 40, and the radius of the second circular hole 40 is the same as that of the terminal jack 20, so that the wiring can be smoothly inserted into the terminal jack 20 through the sealing ring 36.

[0034] Further, the front end of the fixed ring 26 is fixedly connected with a push rod 23, the push rod 23 is designed in an L shape, the push rod 23 is slidingly connected in the inside of a sliding groove 39, the sliding groove 39 is opened in the mounting cover plate 22, the push rod 23 is attached to the front end of the mounting cover plate 22; in operation, the push rod 23 is fixed at the front end of the fixed ring 26, by pushing the push rod 23 to move, one of the fixed baffle plates 27 can be moved, so that the fixed baffle plate 27 can be more flexible during use, the front end of the push rod 23 is attached to the mounting cover plate 22,

[0035] Further, the left and right sides of the moving plate 30 are fixedly connected with a pad 31, the pad 31 is made of rubber material; in operation, the pad 31 is made of rubber material, when the moving plate 30 moves to the maximum position on both sides, by the abutment of the pad 31 and the inner wall of the rectangular groove 21, the abutment of the moving plate 30 and the inner wall of the rectangular groove 21 can be avoided.

[0036] Further, the moving plate 30 is inserted with two groups of guide rods 41, the top end and the bottom end of the guide rod 41 are fixedly connected with the inner wall of the rectangular groove 21; in operation, the guide rod 41 is inserted on the two groups of moving plates 30, when the moving plate 30 moves, the moving plate 30 can be guided and supported, so that the moving plate 30 can move stably, and the terminal jack 20 cannot be normally exposed due to the inclination of the moving plate 30 to one side during movement.

[0037] Further, the rear end of the mounting cover plate 22 does not contact the front end of the moving plate 30, and the left and right sides of the moving plate 30 do not contact the inner wall of the rectangular groove 21; in operation, the mounting cover plate 22 is fixed on the rectangular groove 21, and the surface of the terminal main body 1 is kept horizontal, the rear end of the mounting cover plate 22 does not contact the moving plate 30, so as to avoid the friction between the moving plate 30 and the rear end of the mounting cover plate 22 during movement, and the left and right sides of the moving plate 30 do not contact the inner wall of the rectangular groove 21, so as to reduce the friction during movement.

[0038] Further, the shape of the slot 33 is adapted to the shape of the top block 34, and an arc-shaped groove is opened in the middle of the slot 33; in operation, when the two groups of moving plates 30 contact each other, the inner wall of the slot 33 will contact the top block 34, the top block 34 can provide support for the top moving plate 30, so as to avoid the extrusion of the top moving plate 30 to the bottom moving plate 30 under the action of gravity, and the compression of the support spring 24 on the bottom moving plate 30, an arc-shaped groove is opened in the middle of the slot 33, on the one hand, in order to adapt to the shape of the top block 34, on the other hand, when the top block 34 rotates to the vertical state, the top block 34 will be clamped into the arc-shaped groove, so as to maintain the angle of the top block 34, and the top block 34 can always be in the vertical state without being pushed by the outside, thereby effectively supporting the two groups of moving plates 30, and facilitating the insertion of the wire into the terminal jack 20.

[0039] Working principle: through the structural design of shielding mechanism, when the terminal jack 20 is not plugged on the wiring, the terminal jack 20 can be shielded, so as to separate the terminal jack 20 from the external environment, so as to reduce the adhesion of external dust on the terminal jack 20, and then keep the terminal jack 20 clean, avoid the unused terminal jack to be cleaned regularly, when working, two groups of moving plates 30 are in contact, the moving plate 30 is designed as a long rectangle and is matched with the length of the rectangular groove 21, and the movable groove 29 is opened in the moving plate 30, the fixed baffle 27 is connected in the movable groove 29, two groups of fixed baffles 27 can be spliced into a complete circle, and the radius of the fixed baffle 27 is matched with the first circular hole 37, so as to ensure that two groups of fixed baffles 27 can effectively shield the terminal jack 20 behind the fixed baffle 27, so as to reduce the adhesion of dust in the terminal jack 20 and keep the terminal jack 20 clean, when the terminal jack 20 is needed, the moving plate 30 can be pushed to the two sides, so that the two groups of moving plates 30 are away from each other, when the moving plate 30 moves to the two sides, the fixed ring 26 is in abutment with the moving plate 30, so that the moving plate 30 drives the fixed ring 26 to move, the fixed ring 26 is fixed on the inserting rod 25, the fixed ring 26 drives the inserting rod 25 to move, the inserting rod 25 drives the fixed baffle 27 to move, two groups of fixed baffles 27 will be away from each other, the supporting spring 24 sleeved on the inserting rod 25 will be compressed, the side of the inserting rod 25 away from the fixed ring 26 will be inserted into the inserting groove 42, the inserting groove 42 is opened on the top and bottom of the inner wall of the rectangular groove 21, and the size of the inserting groove 42 is matched with the inserting rod 25, so as to ensure that the inserting rod 25 can be smoothly inserted into the inserting groove 42, and the movement of the inserting rod 25 can be guided through the abutment between the inner wall of the inserting groove 42 and the inserting rod 25, so as to avoid the deviation of the inserting rod 25 when moving, at this time, the terminal jack 20 shielded by the two groups of fixed baffles 27 will be exposed, and the wiring can be smoothly inserted into the terminal jack 20, so as to complete the connection, wherein the radius of the first circular hole 37 is slightly larger than that of the terminal jack 20, the first circular hole 37 and the second circular hole 40 are aligned with the position of the terminal jack 20.

[0040] The two groups of moving plates 30 are in contact with each other to ensure that the fixed baffle plates 27 connected slidingly inside the movable groove 29 can keep in contact, and the left and right sides of the moving plates 30 are provided with notches 33, the notches 33 are designed in a U shape as a whole and are matched with the top blocks 34 in size, the top blocks 34 can be rotated in the notches 33 by rotating the rotating blocks 35, the top blocks 34 will abut against the inner walls of the notches 33 when rotating, so as to lift the two groups of moving plates 30, when the top blocks 34 are rotated to the vertical state, the top blocks 34 will push the two groups of moving plates 30 to move to the two sides, the two groups of moving plates 30 will move away from each other to expose the terminal jack 20, a vertical groove is formed on the rotating block 35, the vertical groove can facilitate the use of a screwdriver to rotate the rotating block 35, so as to facilitate the rotation of the top blocks 34, and the rotating block 35 is rotated in the through hole 38, the front end of the rotating block 35 is kept horizontal with the surface of the mounting cover plate 22 to avoid the height difference between the front end of the rotating block 35 and the mounting cover plate 22, and the top blocks 34 can also limit the two groups of moving plates 30 to avoid that one group of moving plates 30 moves excessively to cause that the first circular holes 37 formed on the moving plates 30 cannot be aligned with the terminal jack 20.

[0041] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A plug-in terminal for a printed circuit board, comprising a terminal body (1) having a plurality of sets of terminal insertion holes (20) formed therein, characterized in that: The front end of the terminal body (1) is provided with a rectangular slot (21), and the inside of the rectangular slot (21) is provided with a shielding mechanism, the shielding mechanism comprises two groups of moving plates (30), the moving plates (30) are provided with movable grooves (29), the movable grooves (29) are slidably connected with fixed baffles (27), the fixed baffles (27) are designed in a semicircle, the fixed baffles (27) are fixedly connected with insertion rods (25), the insertion rods (25) are fixedly connected with fixed rings (26) close to the fixed baffles (27), the diameter of the fixed ring (26) is greater than the width of the movable groove (29), the fixed ring (26) is abutted with the moving plate (30), and the fixed ring (26) is fixedly connected with a supporting spring (24). The shielding mechanism further comprises a top block (34), the left and right sides of the moving plate (30) are provided with notches (33), the inner wall of the notch (33) is attached with the top block (34), the rear end of the top block (34) is rotatably connected with the inner wall of the rectangular slot (21), the front end of the top block (34) is fixedly connected with a rotating block (35), the rotating block (35) is provided with a vertical groove, the rotating block (35) is rotatably connected with a through hole (38), and the through hole (38) is arranged on the mounting cover plate (22). The left and right sides of the moving plate (30) are rotatably connected with pulleys (32), one side of the pulley (32) away from the moving plate (30) is abutted with the inner wall of the rectangular slot (21), the fixed baffles (27) are fixedly connected with four groups of fixed columns (28), the fixed columns (28) are designed in a long rectangle, and the fixed columns (28) are attached with the inner wall of the movable groove (29).

2. A plug-in terminal for a printed circuit board according to claim 1, characterized in that: The side of the supporting spring (24) away from the fixed ring (26) is fixedly connected with the inner wall of the rectangular slot (21), the side of the insertion rod (25) away from the fixed baffle (27) is inserted into the inside of the insertion groove (42), the insertion groove (42) is arranged on the inner wall of the rectangular slot (21), the moving plate (30) is provided with a first circular hole (37), and the first circular hole (37) penetrates the moving plate (30).

3. A plug-in terminal for a printed circuit board according to claim 2, characterized in that: The inner wall of the rectangular slot (21) is fixedly connected with the mounting cover plate (22), the mounting cover plate (22) is provided with a second circular hole (40), the terminal jack (20) is aligned with the first circular hole (37) and the second circular hole (40), and the radius of the second circular hole (40) is slightly smaller than that of the first circular hole (37).

4. A plug-in terminal for a printed circuit board according to claim 3, characterized in that: The inner wall of the first circular hole (37) is fixedly connected with a sealing ring (36), the sealing ring (36) is a silica gel sealing ring, and the sealing ring (36) is abutted with the rear end of the mounting cover plate (22).

5. A plug-in terminal for a printed circuit board according to claim 4, characterized in that: The front end of the fixed ring (26) is fixedly connected with a push rod (23), the push rod (23) is designed in an L shape, the push rod (23) is slidably connected with a sliding groove (39), the sliding groove (39) is arranged on the mounting cover plate (22), and the push rod (23) is attached with the front end of the mounting cover plate (22).

6. A plug-in terminal for a printed circuit board according to claim 5, characterized in that: Both sides of the moving plate (30) are fixedly connected with the cushion blocks (31), the cushion blocks (31) are made of rubber material, two groups of guide rods (41) are inserted on the moving plate (30), and the top end and the bottom end of the guide rod (41) are fixedly connected with the inner wall of the rectangular groove (21).

7. A plug-in terminal for a printed circuit board according to claim 6, characterized in that: The rear end of the mounting cover plate (22) is not in contact with the front end of the moving plate (30), and both sides of the moving plate (30) are not in contact with the inner wall of the rectangular groove (21).

8. A plug-in terminal for a printed circuit board according to claim 7, characterized in that: The shape of the slot (33) is matched with the top block (34), and an arc-shaped groove is formed in the middle of the slot (33).

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