Low-voltage comprehensive distribution box with built-in electric shock prevention function

Abstract

The invention relates to the technical field of distribution boxes, and discloses a low-voltage comprehensive distribution box with a built-in electric shock prevention function, which comprises a box body, a circuit breaker is mounted in the box body, a delay trigger is fixedly mounted in the box body, and the circuit breaker is opened and closed through the delay trigger. The mounting frame is fixedly connected with the inner wall of the box body, a sliding block and a driving plate are slidably mounted in the mounting frame, and two shifting protrusions are fixedly mounted on the surface of the sliding block. According to the distribution box provided by the invention, the delay trigger is arranged in the box body, the delay trigger is used for opening and closing the circuit breaker, and the delay trigger has an action delay function, so that an operator has enough time to be away from the distribution box after opening and closing operation, keeps an enough distance and waits for opening and closing actions of the circuit breaker; therefore, the anti-electric shock effect is achieved, and the safety of the distribution box is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, and in particular to a low-voltage integrated distribution box with built-in anti-electric shock function. Background Technology

[0002] A distribution box is a low-voltage power distribution device that assembles switching equipment, measuring instruments, protective electrical appliances, and auxiliary equipment in a closed or semi-closed metal cabinet or panel according to electrical wiring requirements. In order to solve the problem of accidental electric shock, the prior art, patent document with announcement number CN221688061U, discloses a comprehensive distribution box with anti-electric shock function, including: a distribution box and a protective shell set on one side of the distribution box. The upper and lower sides of the inner wall of the protective shell are provided with two sliding grooves. The top and bottom of the distribution box are fixedly installed with two slide rails, which are slidably connected to each other. A mesh cover box is fixedly installed on the front side of the protective shell, and an LED display screen is fixedly installed on the inner wall of the mesh cover box. By picking up the protective cover, aligning the slide groove with the slide rail, and pushing the protective cover forward, the slide groove slides and engages with the slide rail, thus creating a sliding engagement between the protective cover and the distribution box. This is used to isolate the distribution box, preventing external objects from contacting it and effectively preventing unnecessary contact or unauthorized use. This minimizes the risk of external objects entering the distribution box and reduces the risk of electric shock.

[0003] This external protection design cannot guarantee the safety of operators who open the box for maintenance. In particular, when operators open the box to turn the switch on or off, they are close to the live equipment inside and cannot avoid it in time, which poses a high risk of electric shock. Therefore, the existing distribution box has the defect of being prone to electric shock when opening and closing the switch, which urgently needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art where operators are prone to electric shock when opening and closing the switch, and to propose a low-voltage integrated distribution box with built-in anti-electric shock function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-voltage integrated distribution box with built-in anti-electric shock function, including a box body, a circuit breaker installed inside the box body, and a delay trigger fixedly installed inside the box body, which performs opening and closing operations on the circuit breaker through the delay trigger.

[0006] The delay trigger includes a mounting bracket, which is fixedly connected to the inner wall of the housing. A sliding block and a drive plate are slidably installed inside the mounting bracket. Two actuating protrusions are fixedly installed on the surface of the sliding block, and a connection hole is opened on the surface of the sliding block. A connecting rod is slidably installed inside the drive plate. Pressing the connecting rod can insert the end of the connecting rod into the connection hole.

[0007] A resistance sleeve is fixedly installed inside the mounting bracket. A piston is slidably installed inside the resistance sleeve. The piston is fixedly connected to a sliding block via a transmission rod. An air guide pipe with a regulating valve is fixedly installed on the surface of the resistance sleeve. The piston divides the inner cavity of the resistance sleeve into upper and lower air chambers, which are connected by the air guide pipe.

[0008] A tension spring is mounted on the surface of the drive plate. Under the tension of the spring, the drive plate drives the sliding block to move up or down. During this process, the sliding block and the piston move synchronously. The piston slides inside the resistance sleeve. The air in the two air chambers inside the resistance sleeve flows through the air guide pipe. By changing the opening and closing size of the regulating valve, the airflow speed in the air guide pipe is controlled, thereby changing the moving speed of the sliding block and the piston. The circuit breaker is opened and closed using two actuating protrusions. The delay trigger has a delayed action function, allowing the operator enough time to move away from the distribution box after the opening and closing operation, which greatly improves the safety of the distribution box.

[0009] Preferably, a guide rod is fixedly installed on the upper side of the sliding block. The guide rod is slidably connected to the top plate of the mounting frame. Two return springs are sleeved on the surface of the guide rod. The two return springs abut against the upper and lower surfaces of the top plate of the mounting frame, respectively. When the two return springs are not compressed by external force, neither of the two toggle protrusions will contact the handle on the circuit breaker, reducing the risk of electric shock. When the circuit breaker trips unexpectedly, since the toggle protrusions do not contact the circuit breaker, they will not obstruct the rotation of the handle on the circuit breaker, ensuring the normal operation of the circuit breaker.

[0010] Preferably, the sliding block has an internal exhaust channel, the connecting hole is connected to the outside through the exhaust channel, and the end of the connecting rod is provided with a sealing sleeve. The end of the connecting rod with the sealing sleeve is inserted into the connecting hole, so that the air in the connecting hole is discharged through the exhaust channel, and the exhaust channel plays a certain pressure relief role.

[0011] Preferably, a ball head pin is slidably installed inside the drive plate, and a clamping spring is provided inside the drive plate to clamp the ball head pin. An arc-shaped groove is provided on the surface of the connecting rod. When the end of the connecting rod with the sealing sleeve is inserted into the connecting hole, the end of the ball head pin is inserted into the arc-shaped groove under the action of the clamping spring, so that the connecting rod is kept inserted into the connecting hole.

[0012] Preferably, the piston has an internal cavity, and a first one-way valve and a second one-way valve are respectively embedded on the upper and lower surfaces of the piston. The inner cavity of the resistance sleeve is connected to the piston cavity through the first one-way valve and the second one-way valve. A connecting channel is provided inside the transmission rod, and the piston cavity is connected to the connecting hole through the connecting channel.

[0013] The inner top of the resistance sleeve is the first air pressure chamber, and the inner bottom of the resistance sleeve is the second air pressure chamber. When the piston moves into the first or second air pressure chamber, the air pressure in the first or second air pressure chamber increases. The increase in air pressure pushes the connecting rod to separate from the connecting hole. That is, the transmission relationship between the drive plate and the sliding block is automatically disconnected, so that the delay trigger has an automatic reset function, so as to perform opening or closing operations on different circuit breakers, and meet the usage requirements of one delay trigger controlling multiple circuit breakers.

[0014] Preferably, the number of circuit breakers, sliding blocks, and connecting rods is the same, and the positions of the circuit breakers, sliding blocks, and connecting rods correspond one-to-one, so as to realize the function of one delay trigger controlling multiple circuit breakers to delay opening and closing.

[0015] Preferably, a linear slide rod is slidably installed on the inner wall of the housing, and the two ends of the tension spring are movably connected to the drive plate and the linear slide rod, respectively. An operating handle is provided on the top of the housing, and the linear slide rod is moved up and down by operating the operating handle.

[0016] The operating handle includes an external handle and an internal swing arm, which are coaxially and fixedly connected. The pivot between the external handle and the internal swing arm is rotatably connected to the housing. The surface of the internal swing arm has a waist-shaped groove, and the pin on the surface of the linear slide rod slides along the waist-shaped groove. The surface of the external handle is fitted with a positioning pin, and the outer surface of the housing has three positioning holes. The positioning pin can be inserted into the positioning holes to constrain the angle of the external handle and the internal swing arm. The operation can be performed outside the housing through the operating handle, making it safer to use.

[0017] The present invention has the following beneficial effects:

[0018] 1. The distribution box proposed in this invention uses a delay trigger installed inside the box to operate the circuit breaker for opening and closing. The delay trigger has a delayed action function, which allows the operator enough time to move away from the distribution box after the opening and closing operation and to maintain a sufficient distance while waiting for the circuit breaker to open and close, thereby achieving the effect of preventing electric shock and greatly improving the safety of the distribution box.

[0019] 2. The delay trigger proposed in this invention uses a piston inside a resistance sleeve. During the up-and-down movement of the piston, the air at the upper and lower ends of the resistance sleeve flows through a regulating valve, changing the opening and closing size of the regulating valve, thereby changing the resistance of the airflow to the piston. This makes the speed at which the piston moves slowly adjustable, giving the delay trigger the function of delayed action.

[0020] When the piston moves into the first or second air pressure chamber, the air pressure in the first or second air pressure chamber increases. The increased air pressure pushes the connecting rod to separate from the connecting hole. That is, the transmission relationship between the drive plate and the sliding block is automatically disconnected, so that the delay trigger has the function of automatic reset, so as to perform opening or closing operations on different circuit breakers, and meet the usage requirements of one delay trigger controlling multiple circuit breakers.

[0021] 3. The delay trigger proposed in this invention is located on the front side of the circuit breaker and has the function of blocking and protecting. Moreover, under normal conditions, neither of the two toggle protrusions (or the entire delay trigger) is in contact with the handle on the circuit breaker, reducing the risk of electric shock. When the circuit breaker trips unexpectedly, since the toggle protrusions are not in contact with the circuit breaker, they will not obstruct the rotation of the handle on the circuit breaker, ensuring the normal operation of the circuit breaker and making it safer to use.

[0022] In addition, in cases where the circuit breaker cannot be closed, the delay trigger has a trial closing function. That is, when the circuit breaker is closed by the delay trigger, the regulating valve is fully opened. At this time, the air resistance in the resistance sleeve to the piston is reduced, allowing the piston to move quickly together with the sliding block. When the piston moves into the first air pressure chamber, the air pressure in the first air pressure chamber can still push the connecting rod out of the connecting hole. The sliding block quickly resets, allowing the toggle protrusion to quickly separate from the handle on the circuit breaker to prevent electric shock. If the circuit breaker trips automatically, the handle on the circuit breaker can be smoothly flipped downwards, further improving the safety of operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the distribution box proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the distribution box proposed in this invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the delay trigger proposed in this invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the delay trigger proposed in this invention. Figure 2 ;

[0027] Figure 5 This is a partial side sectional view of the distribution box proposed in this invention;

[0028] Figure 6 This is a side cross-sectional view of the sliding block and driving plate proposed in this invention.

[0029] Figure 7This is a side sectional view of the resistance sleeve proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the piston moving upward into the first pressure chamber according to the present invention;

[0031] Figure 9 This is a schematic diagram of the piston moving downward into the second pressure chamber according to the present invention;

[0032] Figure 10 This is a schematic diagram showing the two states of the piston moving upwards and downwards.

[0033] In the diagram: 1. Housing, 2. Circuit breaker, 3. Mounting bracket, 4. Sliding block, 5. Drive plate, 6. Actuating protrusion, 7. Connecting hole, 8. Connecting rod, 9. Resistance sleeve, 10. Piston, 11. Transmission rod, 12. Adjusting valve, 13. Air guide pipe, 14. Tension spring, 15. Guide rod, 16. Return spring, 17. Exhaust channel, 18. Ball pin, 19. Arc groove, 20. Cavity, 21. First check valve, 22. Second check valve, 23. Connecting channel, 24. First air pressure chamber, 25. Second air pressure chamber, 26. Linear slide rod, 27. External handle, 28. Internal swing arm, 29. Positioning pin, 30. Positioning hole. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Reference Figures 1-10 A low-voltage integrated distribution box with built-in electric shock protection function includes a box body 1, a circuit breaker 2 installed inside the box body 1, and a delay trigger fixedly installed inside the box body 1, which performs opening and closing operations on the circuit breaker 2 through the delay trigger.

[0037] The delay trigger includes a mounting bracket 3, which is fixedly connected to the inner wall of the housing 1. A sliding block 4 and a drive plate 5 are slidably mounted inside the mounting bracket 3. Two actuating protrusions 6 are fixedly mounted on the surface of the sliding block 4, and a connecting hole 7 is provided on the surface of the sliding block 4. A connecting rod 8 is slidably mounted inside the drive plate 5. Pressing the connecting rod 8 inserts its end into the connecting hole 7. Figure 6As shown.

[0038] like Figure 7 As shown, a resistance sleeve 9 is fixedly installed inside the mounting bracket 3. A piston 10 is slidably installed inside the resistance sleeve 9. The piston 10 is fixedly connected to the sliding block 4 through the transmission rod 11. An air guide pipe 13 with a regulating valve 12 is fixedly installed on the surface of the resistance sleeve 9. The piston 10 divides the inner cavity of the resistance sleeve 9 into two air chambers, which are connected through the air guide pipe 13.

[0039] A tension spring 14 is movably mounted on the surface of the drive plate 5. Under the tension of the tension spring 14, the drive plate 5 drives the sliding block 4 to move up or down. During this process, the sliding block 4 moves synchronously with the piston 10. The piston 10 slides inside the resistance sleeve 9. The air in the two air chambers inside the resistance sleeve 9 flows through the air guide pipe 13. By changing the opening and closing size of the regulating valve 12, the airflow speed in the air guide pipe 13 is controlled, thereby changing the moving speed of the sliding block 4 and the piston 10. The circuit breaker 2 is opened and closed using the two actuating protrusions 6.

[0040] refer to Figure 1 A linear slide rod 26 is slidably installed on the inner wall of the housing 1. The two ends of the tension spring 14 are movably connected to the drive plate 5 and the linear slide rod 26, respectively. An operating handle is provided on the top of the housing 1, and the linear slide rod 26 is moved up and down by operating the handle.

[0041] See details Figure 3 , Figure 4 The operating handle includes an external handle 27 and an internal swing arm 28, which are coaxially fixedly connected. The pivot between the external handle 27 and the internal swing arm 28 is rotatably connected to the housing 1. The surface of the internal swing arm 28 has a waist-shaped groove, and the pin on the surface of the linear slide rod 26 slides along the waist-shaped groove. A positioning pin 29 is inserted into the surface of the external handle 27. The outer surface of the housing 1 has three positioning holes 30, into which the positioning pin 29 can be inserted. Figure 2 As shown, the angles of the external handle 27 and the internal swing arm 28 are constrained.

[0042] When the external handle 27 is tilted upward or downward, the tension spring 14 is stretched to provide tension for the drive plate 5 to move upward or downward. When the external handle 27 is kept horizontal, the end of the connecting rod 8 is aligned with the connecting hole 7, making it easy to press the connecting rod 8 into the connecting hole 7.

[0043] In this embodiment, a guide rod 15 is fixedly installed on the upper side of the sliding block 4. The guide rod 15 is slidably connected to the top plate of the mounting bracket 3. Two return springs 16 are sleeved on the surface of the guide rod 15. The two return springs 16 respectively abut against the upper and lower surfaces of the top plate of the mounting bracket 3. When the two return springs 16 are not compressed by external force, neither of the two toggle protrusions 6 contacts the handle on the circuit breaker 2. (Reference) Figure 5 , Figure 6 That is, when the handle on the circuit breaker 2 is flipped up or down, it will not touch the actuation protrusion 6.

[0044] In this embodiment, the sliding block 4 has an exhaust channel 17 inside, the connecting hole 7 is connected to the outside through the exhaust channel 17, the end of the connecting rod 8 is provided with a sealing sleeve, and the end of the connecting rod 8 with the sealing sleeve is inserted into the connecting hole 7 so that the air in the connecting hole 7 is discharged through the exhaust channel 17.

[0045] A ball head pin 18 is slidably installed inside the drive plate 5. A clamping spring is provided inside the drive plate 5 to clamp the ball head pin 18. An arc-shaped groove 19 is formed on the surface of the connecting rod 8. When the end of the connecting rod 8 with the sealing sleeve is inserted into the connecting hole 7, under the action of the clamping spring, the end of the ball head pin 18 is inserted into the arc-shaped groove 19. Figure 6 As shown, the connecting rod 8 is kept inserted into the connecting hole 7.

[0046] The piston 10 has an internal cavity 20. The upper and lower surfaces of the piston 10 are respectively fitted with a first one-way valve 21 and a second one-way valve 22. The inner cavity of the resistance sleeve 9 is connected to the cavity 20 of the piston 10 through the first one-way valve 21 and the second one-way valve 22. The transmission rod 11 has a connecting channel 23. The cavity 20 of the piston 10 is connected to the connecting hole 7 through the connecting channel 23.

[0047] Among them, such as Figure 7 As shown, when piston 10 moves upward, air in the upper air chamber of resistance sleeve 9 enters the lower air chamber of resistance sleeve 9 through air guide pipe 13. When piston 10 moves downward, air in the lower air chamber of resistance sleeve 9 enters the upper air chamber of resistance sleeve 9 through air guide pipe 13, changing the opening size of regulating valve 12 and reducing the airflow velocity in air guide pipe 13. Due to the air resistance in resistance sleeve 9, piston 10 moves slowly upward or downward, that is, sliding block 4 moves slowly upward or downward. By turning protrusion 6, the handle on circuit breaker 2 is flipped upward to achieve closing, or by turning protrusion 6, the handle on circuit breaker 2 is flipped downward to achieve opening.

[0048] The top inner part of the resistance sleeve 9 is the first air pressure chamber 24, and the bottom inner part of the resistance sleeve 9 is the second air pressure chamber 25. When the piston 10 moves into the first air pressure chamber 24 or the second air pressure chamber 25, the air pressure in the first air pressure chamber 24 or the second air pressure chamber 25 increases. The increased air pressure pushes the connecting rod 8 to separate from the connecting hole 7.

[0049] Specifically, such as Figure 8As shown, when the piston 10 moves into the first pressure chamber 24, the air in the first pressure chamber 24 is compressed, the air pressure increases, and the air in the first pressure chamber 24 enters the cavity 20 through the first one-way valve 21, or, as... Figure 9 As shown, when piston 10 moves into the second pressure chamber 25, the air in the second pressure chamber 25 is compressed, the air pressure increases, and the air in the second pressure chamber 25 enters the cavity 20 through the second one-way valve 22. Finally, as... Figure 10 As shown, the air pressure inside the connecting hole 7 increases, pushing the connecting rod 8 to separate from the connecting hole 7. At this time, under the action of the two return springs 16, the sliding block 4 returns to its original position. Figure 5 As shown, then, when the operating handle is moved, the drive plate 5 moves up and down, but the corresponding sliding block 4 does not move.

[0050] It should be noted that, as Figure 7 , Figure 10 As shown, P0, P1, P2, P3, and P4 represent the air pressure at the corresponding positions. At this time, piston 10 is in... Figure 10 In state P3 = P1 - P2 - P4, P2 = 0;

[0051] Figure 7 In the given condition, P2≠0 and P1>P0, piston 10 is in the position... Figure 7 At the position shown, the air pressure Px inside the connecting hole 7 is much smaller than P3. Therefore, under the action of Px, the connecting rod 8 cannot be pushed out of the connecting hole 7. Under the action of P3, the connecting rod 8 can be pushed out of the connecting hole 7, thus separating the connecting rod 8 from the connecting hole 7.

[0052] The number of circuit breakers 2, sliding blocks 4, and connecting rods 8 are the same, and their positions correspond one-to-one. (Refer to...) Figure 3 , Figure 4 Select the appropriate position and number of connecting rods 8, press down the connecting rods 8 so that one end of the connecting rods 8 is inserted into the connecting hole 7, so as to realize the transmission connection between the drive plate 5 and the sliding block 4. When the operating handle is moved, the opening and closing operation of one or more circuit breakers 2 at the corresponding position can be realized.

[0053] The distribution box proposed in this invention uses a delay trigger installed inside the box 1 to operate the circuit breaker 2. The delay trigger has a delayed action function, which allows the operator enough time to move away from the distribution box after the operation and maintain a sufficient distance to wait for the circuit breaker 2 to open and close, thereby achieving the effect of preventing electric shock and greatly improving the safety of the distribution box.

[0054] The delay trigger proposed in this invention uses a piston 10 set inside the resistance sleeve 9. During the process of the piston 10 moving up and down, the air at the upper and lower ends of the resistance sleeve 9 flows through the regulating valve 12, changing the opening and closing size of the regulating valve 12, thereby changing the resistance of the airflow to the piston 10, making the speed of the piston 10 moving slowly adjustable, and giving the delay trigger the function of delayed action.

[0055] When the piston 10 moves into the first air pressure chamber 24 or the second air pressure chamber 25, the air pressure in the first air pressure chamber 24 or the second air pressure chamber 25 increases. The increased air pressure pushes the connecting rod 8 to separate from the connecting hole 7. That is, the transmission relationship between the drive plate 5 and the sliding block 4 is automatically disconnected, so that the delay trigger has the function of automatic reset, so as to perform opening or closing operations on different circuit breakers 2, and meet the usage requirements of one delay trigger controlling multiple circuit breakers 2.

[0056] The delay trigger is located on the front side of the circuit breaker 2, which has the function of blocking and protection. Moreover, under normal circumstances, neither of the two toggle protrusions 6 (or the entire delay trigger) will contact the handle on the circuit breaker 2, reducing the risk of electric shock. When the circuit breaker 2 trips unexpectedly, since the toggle protrusions 6 do not contact the circuit breaker 2, the toggle protrusions 6 will not obstruct the rotation of the handle on the circuit breaker 2, ensuring the normal operation of the circuit breaker 2 and making it safer to use.

[0057] In addition, there is a situation where circuit breaker 2 cannot be closed. The delay trigger has a trial closing function. That is, when the circuit breaker 2 is closed by the delay trigger, the regulating valve 12 is fully opened. At this time, the air resistance in the resistance sleeve 9 to the piston 10 is reduced, allowing the piston 10 to move quickly together with the sliding block 4. When the piston 10 moves into the first air pressure chamber 24, the air pressure in the first air pressure chamber 24 can still push the connecting rod 8 out of the connecting hole 7, and the position of the sliding block 4 is reset. Figure 5 The position shown allows the toggle protrusion 6 to quickly separate from the handle on the circuit breaker 2, preventing electric shock. If the circuit breaker 2 trips automatically, the handle on the circuit breaker 2 can be smoothly flipped downwards, further improving operational safety.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-voltage integrated distribution box with built-in electric shock protection function, comprising a box body (1), wherein a circuit breaker (2) is installed inside the box body (1), characterized in that: The box (1) is fixedly installed with a delay trigger, which is used to open and close the circuit breaker (2). The delay trigger includes a mounting bracket (3), which is fixedly connected to the inner wall of the housing (1). A sliding block (4) and a drive plate (5) are slidably installed inside the mounting bracket (3). Two actuating protrusions (6) are fixedly installed on the surface of the sliding block (4). A connecting hole (7) is opened on the surface of the sliding block (4). A connecting rod (8) is slidably installed inside the drive plate (5). Pressing the connecting rod (8) can insert the end of the connecting rod (8) into the connecting hole (7). The mounting bracket (3) has a resistance sleeve (9) fixedly installed inside. A piston (10) is slidably installed inside the resistance sleeve (9). The piston (10) is fixedly connected to the sliding block (4) through the transmission rod (11). A guide pipe (13) with a regulating valve (12) is fixedly installed on the surface of the resistance sleeve (9). The piston (10) divides the inner cavity of the resistance sleeve (9) into two air chambers, which are connected through the guide pipe (13). A tension spring (14) is movably mounted on the surface of the drive plate (5). Under the tension of the tension spring (14), the drive plate (5) drives the sliding block (4) to move up or down. During this process, the sliding block (4) moves synchronously with the piston (10). The piston (10) slides in the resistance sleeve (9). The air in the two air chambers in the resistance sleeve (9) flows through the air guide pipe (13). By changing the opening and closing size of the regulating valve (12), the airflow speed in the air guide pipe (13) is controlled, and the moving speed of the sliding block (4) and the piston (10) is changed. The circuit breaker (2) is opened and closed by using the two actuating protrusions (6).

2. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 1, characterized in that: A guide rod (15) is fixedly installed on the upper side of the sliding block (4). The guide rod (15) is slidably connected to the top plate of the mounting frame (3). Two reset springs (16) are sleeved on the surface of the guide rod (15). The two reset springs (16) abut against the upper and lower surfaces of the top plate of the mounting frame (3) respectively. When the two reset springs (16) are not compressed by external force, the two toggle protrusions (6) do not contact the handle on the circuit breaker (2).

3. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 2, characterized in that: The sliding block (4) has an exhaust channel (17) inside. The connecting hole (7) is connected to the outside through the exhaust channel (17). The end of the connecting rod (8) is provided with a sealing sleeve. The end of the connecting rod (8) with the sealing sleeve is inserted into the connecting hole (7) so that the air in the connecting hole (7) is discharged through the exhaust channel (17).

4. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 3, characterized in that: A ball head pin (18) is slidably installed inside the drive plate (5). A clamping spring is provided inside the drive plate (5) to clamp the ball head pin (18). An arc-shaped groove (19) is provided on the surface of the connecting rod (8). When the end of the connecting rod (8) with the sealing sleeve is inserted into the connecting hole (7), the end of the ball head pin (18) is inserted into the arc-shaped groove (19) under the action of the clamping spring.

5. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 4, characterized in that: The piston (10) has a cavity (20) inside. The upper and lower surfaces of the piston (10) are respectively fitted with a first one-way valve (21) and a second one-way valve (22). The inner cavity of the resistance sleeve (9) is connected to the cavity (20) of the piston (10) through the first one-way valve (21) and the second one-way valve (22). The transmission rod (11) has a connecting channel (23) inside. The cavity (20) of the piston (10) is connected to the connecting hole (7) through the connecting channel (23).

6. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 5, characterized in that: The inner top of the resistance sleeve (9) is the first air pressure chamber (24), and the inner bottom of the resistance sleeve (9) is the second air pressure chamber (25). When the piston (10) moves into the first air pressure chamber (24) or the second air pressure chamber (25), the air pressure in the first air pressure chamber (24) or the second air pressure chamber (25) increases. The increase in air pressure pushes the connecting rod (8) to separate from the connecting hole (7).

7. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 6, characterized in that: The number of circuit breakers (2), sliding blocks (4) and connecting rods (8) are the same, and the positions of circuit breakers (2), sliding blocks (4) and connecting rods (8) correspond one-to-one.

8. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 7, characterized in that: A linear slide rod (26) is slidably installed on the inner wall of the housing (1). The two ends of the tension spring (14) are movably connected to the drive plate (5) and the linear slide rod (26) respectively. An operating handle is provided on the upper part of the housing (1), and the linear slide rod (26) is moved up and down by the operating handle.

9. A low-voltage integrated distribution box with built-in anti-electric shock function according to claim 8, characterized in that: The operating handle includes an external handle (27) and an internal swing arm (28). The external handle (27) and the internal swing arm (28) are coaxially fixedly connected. The pivot between the external handle (27) and the internal swing arm (28) is rotatably connected to the housing (1). The surface of the internal swing arm (28) is provided with a waist-shaped groove. The pin on the surface of the linear slide rod (26) slides along the waist-shaped groove. The surface of the external handle (27) is provided with a positioning pin (29). The outer surface of the housing (1) is provided with three positioning holes (30). The positioning pin (29) can be inserted into the positioning hole (30).

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