Locking power-off device

Abstract

The invention discloses a latching power-off device which comprises a mounting box, a microswitch, a first latching assembly and a second latching assembly, the microswitch is arranged in the mounting box, a closing button is arranged at the lower end of the microswitch, when the closing button is located in the microswitch, the microswitch is turned on, and when the closing button extends out of the microswitch, the first latching assembly is turned off. The microswitch is closed, the first locking assembly comprises a shifting piece and a locking piece which are arranged in the mounting box, one end of the shifting piece is arranged at the lower end of the microswitch, the shifting piece is connected with the microswitch, the closing button abuts against the shifting piece, and the shifting piece can move between a first position and a second position in the vertical direction relative to the microswitch; the shifting piece is matched with the locking piece to lock the shifting piece, the second locking assembly comprises a telescopic piece, and the telescopic piece is arranged in the mounting box and can move in the width direction of the mounting box relative to the mounting box. The latching power-off device has the advantages of multiple latching power-off means, high safety performance and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power safety, in particular to a locking and power-off device. BACKGROUND

[0002] The grounding wire generally refers to connecting the device or line with the ground in the power system during maintenance or maintenance to ensure safety, so as to prevent accidental electric shock or device damage. The main function of the grounding wire is to guide the residual charge or fault current on the device or line into the ground, thereby protecting the safety of personnel and equipment. However, in the process, if the grounding wire is not removed before closing, it will cause short circuit of the device or line, which may cause damage to the device, fire or even explosion. Therefore, a locking and power-off device for preventing closing misoperation is needed.

[0003] In the closing and power-off technology of the phase, the mechanical locking relies on the mechanical switch to touch, and the electrical driving locking relies on the locking tongue to push or retract to complete the locking. However, both have defects: the mechanical type is easily affected by accidental touch, and it is difficult to handle the closing button pop-out out of position to cause the failure of the closing; the power-on type driving is separated from the closing button, and the effect is not good. The locking mode is single, the anti-misoperation is poor, and part of the power driving is equipped with a limiting structure. Accidental power-on is easy to cause conflict, which leads to closing misoperation or component damage. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, an embodiment of the present application provides a locking and power-off device with simple structure and high safety performance.

[0006] The locking power-off device of the present application comprises a mounting box, a micro switch provided in the mounting box and having a closing button at the lower end of the micro switch, the micro switch being open when the closing button is in the micro switch and the micro switch being closed when the closing button is out of the micro switch, a first locking assembly comprising a toggle and a locking member provided in the mounting box, one end of the toggle being provided at the lower end of the micro switch and the toggle being connected with the micro switch, the closing button being abutted with the toggle, the toggle being movable between a first position and a second position in the up-down direction relative to the micro switch, the toggle being in a horizontal state in the first position so that the toggle drives the closing button to be in the micro switch to make the micro switch open, the toggle being in an inclined state in the second position so that the closing button is out of the micro switch to make the micro switch closed, the toggle being cooperated with the locking member to lock the toggle, and a second locking assembly comprising an extension member provided in the mounting box and movable in the width direction of the mounting box relative to the mounting box, the locking power-off device comprising a first state and a second state, the extension member being elongated and abutted with the toggle in the first state to make the toggle in the first position, and the extension member being shortened or the extension member being staggered with the toggle in the up-down direction in the second state to make the toggle in the second position.

[0007] The locking power-off device of the present application comprises a first locking assembly and a second locking assembly, the first locking assembly providing reliable mechanical locking protection for the micro switch by the cooperation of the toggle and the locking member to prevent the toggle from moving accidentally and causing misoperation, and the extension member of the second locking assembly being movable forward and backward to adjust the position of the toggle to control the opening and closing of the micro switch, thereby ensuring the accurate and stable switching of the micro switch and the breaking effect, and effectively reducing the misoperation of closing caused by accidental touching and accidental power-on and reducing the damage of internal components.

[0008] In some embodiments, the first locking assembly further comprises a crossbar connected with the closing button so that the closing button drives the crossbar to be movable in the up-down direction, the crossbar being cooperated with the locking member when the closing button is out of the micro switch so that the locking member locks the position of the crossbar.

[0009] In some embodiments, the locking member includes a first baffle and a second baffle, the first baffle and the second baffle are spaced apart in the up-down direction within the mounting box and are movable relative to the width direction of the mounting box between a third position and a fourth position, in the third position, the paddle and the crossbar are spaced apart from the first baffle and the second baffle along the width direction of the mounting box, in the fourth position, the paddle abuts the lower end surface of the first baffle to limit the upward movement of the paddle to lock the paddle, and the crossbar abuts the lower end surface of the second baffle to limit the upward movement of the crossbar to lock the crossbar.

[0010] In some embodiments, the telescopic member is a latching electromagnet, in the first state, the latching electromagnet is energized to elongate the latching electromagnet, so that the energized latching electromagnet drives the paddle to the first position, in the second state, the latching electromagnet is de-energized to shorten the latching electromagnet, and the closing button protrudes out of the micro switch.

[0011] In some embodiments, the second latching assembly further includes a driving member provided on the telescopic member, in the second state, the driving member drives the telescopic member to move, so that the telescopic member is staggered with the paddle in the up-down direction.

[0012] In some embodiments, the lower end surface of the telescopic member is provided with a first conductive contact, the mounting box is provided with a second conductive contact connected to an external power supply device, in the first state, the first conductive contact and the second conductive contact are connected, so that the external power supply device supplies power to the telescopic member through the first conductive contact and the second conductive contact, in the second state, the first conductive contact and the second conductive contact are spaced apart along the width direction of the mounting box, so that the external power supply device is disconnected from the telescopic member.

[0013] In some embodiments, the driving member comprises a connecting cylinder, the connecting cylinder comprises a first cylinder and a second cylinder, the first cylinder extends along the up-down direction, the second cylinder extends along the width direction of the mounting box, the lower end of the first cylinder and one end of the second cylinder are communicated, and the second cylinder is arranged on the telescopic member; a first piston rod and a second piston rod, one end of the first piston rod is arranged in the first cylinder, the upper end of the first piston rod extends out of the first cylinder and is connected with the upper end of the telescopic member, one end of the second piston rod is arranged in the second cylinder, the other end of the second piston rod extends out of the second cylinder and abuts against the inner circumferential surface of the mounting box, and the gas is arranged between the first piston rod and the second piston rod; the telescopic member is shortened to drive the first piston rod to move downward, and the first piston rod drives the second piston rod to extend out of the second cylinder through the gas, so as to drive the telescopic member to move.

[0014] In some embodiments, the locking and power-off device further comprises a mounting frame, the mounting frame is arranged in the mounting box and is movable relative to the width direction of the mounting box, and the first locking assembly and the second locking assembly are both arranged in the mounting frame.

[0015] In some embodiments, the locking and power-off device further comprises a sliding plate, the sliding plate extends along the width direction of the mounting box, the mounting frame is arranged on the sliding plate and moves on the sliding plate; a driving plate, the driving plate extends along the length direction of the mounting box, the driving plate is arranged in the mounting box and is connected with the mounting frame, and the other end of the driving plate extends out of the sliding plate, so that the mounting frame is driven to move by the driving plate.

[0016] In some embodiments, the upper end surface of the telescopic member is provided with a ball, the ball is rotatably arranged in the upper end surface of the telescopic member and at least partially protrudes from the upper end surface of the telescopic member. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the locking and power-off device of the embodiment of the present application.

[0018] Figure 2 It is a sectional view schematic diagram of the mounting box and the sliding plate of the locking and power-off device of the embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the closing button of the locking and power-off device of the embodiment of the present application in the off state.

[0020] Figure 4 It is a schematic diagram of the closing button of the locking and power-off device of the embodiment of the present application in the on state.

[0021] Figure 5 This is a cross-sectional schematic diagram of the drive component of the locking power-off device according to an embodiment of the present invention;

[0022] Figure 6 This is a cross-sectional schematic diagram of the locking electromagnet of the locking power-off device according to an embodiment of the present invention;

[0023] Figure 7 This is an exploded view of the C-shaped rod and drive plate of the locking power-off device according to an embodiment of the present invention;

[0024] Figure 8 for Figure 2 A magnified view of A in the middle.

[0025] 100. Interlocking power-off device;

[0026] 1. Mounting box;

[0027] 2. Micro switch; 21. Close button;

[0028] 3. First locking assembly; 31. Paddle; 32. Locking element; 321. First baffle; 322. Second baffle; 33. Crossbar;

[0029] 4. Second locking assembly; 41. Telescopic component; 42. Driving component; 43. Connecting cylinder; 431. First cylinder; 432. Second cylinder; 433. First piston rod; 434. Second piston rod;

[0030] 5. Mounting bracket; 6. Sliding plate; 7. Drive plate; 8. Ball bearing; 9. Limiting rod; 10. C-shaped rod; 11. Return spring. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The locking power-off device 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0033] like Figures 1-8 As shown, the interlocking power-off device 100 according to an embodiment of the present invention includes a mounting box 1, a micro switch 2, a first interlocking component 3, and a second interlocking component 4.

[0034] The micro switch 2 is located inside the mounting box 1, and a closing button 21 is provided at the lower end of the micro switch 2. When the closing button 21 is inside the micro switch 2, the micro switch 2 is open; when the closing button 21 is outside the micro switch 2, the micro switch 2 is closed. Specifically, as follows... Figure 1 and Figure 2As shown, the mounting box 1 serves as the basic support structure for the entire interlocking power-off device 100. It is made of high-strength insulating material and is a rectangular box extending in the left and right directions to ensure stability and safety even in harsh power environments. The micro switch 2 is installed inside the mounting box 1, and a closing button 21 is provided at the lower end of the micro switch 2. When the closing button 21 is inside the micro switch 2, the micro switch 2 is in the open state to connect the circuit. When the closing button 21 is extended outside the micro switch 2, the micro switch 2 is closed to disconnect the circuit, thereby ensuring the sensitivity and reliability of circuit state changes.

[0035] The first locking assembly 3 includes a lever 31 and a locking element 32 disposed within the mounting box 1. One end of the lever 31 is located at the lower end of the micro switch 2 and is connected to the micro switch 2. The closing button 21 abuts against the lever 31. The lever 31 is movable relative to the micro switch 2 in a vertical direction between a first position and a second position. In the first position, the lever 31 is in a horizontal state so that the lever 31 drives the closing button 21 to be located inside the micro switch 2, thereby opening the micro switch 2. In the second position, the lever 31 is in an inclined state so that the closing button 21 is located outside the micro switch 2, thereby closing the micro switch 2. The lever 31 and the locking element 32 cooperate to lock the lever 31. Specifically, as shown... Figures 2-4 As shown, the first locking assembly 3 includes a lever 31 and a locking element 32. The lever 31 and the locking element 32 work together to act on the closing button 21 of the micro switch 2 to achieve the locking and unlocking functions of the lever 31. The lever 31 is an elastic piece extending in the left-right direction. The right end of the lever 31 is located at the lower end of the micro switch 2. The closing button 21 abuts against the lever 31. The lever 31 can move relative to the micro switch 2 in the up-down direction between a first position and a second position, such as... Figure 4 As shown, in the first position, the lever 31 is in a horizontal state, and the lever 31 drives the closing button 21 to be located inside the micro switch 2, thus opening the micro switch 2; as Figure 3 As shown, in the second position, the lever 31 is tilted, and the closing button 21 can extend out of the micro switch 2 to close the micro switch 2. The locking member 32 is fixed in the mounting box 1 and cooperates with the lever 31. When the lever 31 moves to the second position, the locking member 32 automatically or manually locks the lever 31 to ensure that it remains stable.

[0036] The second locking assembly 4 includes a telescopic member 41, which is disposed within the mounting box 1 and relative to the mounting box 1 along the width direction of the mounting box 1 (e.g., ...). Figure 1 The locking power-off device 100 (shown in the forward / backward direction) is movable and includes a first state and a second state. In the first state, the telescopic member 41 extends and abuts against the lever 31, so that the lever 31 is in a first position. In the second state, the telescopic member 41 shortens or the telescopic member 41 is offset from the lever 31 in the vertical direction, so that the lever 31 is in a second position. Specifically, as shown...Figures 2-4 As shown, the second locking assembly 4 includes a telescopic member 41 which is movable in the front-back direction within the mounting box 1, as shown in the first state, the telescopic member 41 is extended and abuts against the paddle 31, preventing the paddle 31 from moving from the first position (horizontal state) to the second position (inclined state). At this time, the closing button 21 is kept in the micro switch 2 by the paddle 31, the micro switch 2 keeps the open state, and the circuit is connected. As shown in the second state, the telescopic member 41 is shortened or the telescopic member 41 is misaligned with the paddle 31 in the up-down direction, and the restriction on the paddle 31 is released. Or the paddle 31 can be moved from the first position to the second position, the closing button 21 is popped out of the micro switch 2, the micro switch 2 is closed, and the circuit is disconnected. Figure 4 Figure 3 As shown, the second state, the telescopic member 41 is shortened or the telescopic member 41 is misaligned with the paddle 31 in the up-down direction, and the restriction on the paddle 31 is released. Or the paddle 31 can be moved from the first position to the second position, the closing button 21 is popped out of the micro switch 2, the micro switch 2 is closed, and the circuit is disconnected.

[0037] Thus, when it is necessary to keep the circuit connected, the telescopic member 41 is extended to the position abutting against the paddle 31, locking the paddle 31 in the first position, when it is necessary to disconnect the circuit, the user shortens the telescopic member 41 or adjusts its position to misalign it with the paddle 31, and the paddle 31 moves to the second position under the action of gravity or external force, realizing the disconnection of the circuit. At the same time, the locking member 32 of the first locking assembly 3 ensures that the paddle 31 does not accidentally stay in the middle position during movement, causing unstable circuit state.

[0038] The locking power-off device 100 of the embodiment of the application is provided with the first locking assembly 3 and the second locking assembly 4, the first locking assembly 3 provides a basic and reliable mechanical locking protection for the on-off of the micro switch 2 by means of the cooperation of the paddle 31 and the locking member 32, preventing accidental movement of the paddle 31 from causing misoperation, and the telescopic member 41 of the second locking assembly 4 can move in the front-back direction, thereby adjusting the position between the telescopic member 41 and the paddle 31 and controlling the connection and disconnection of the micro switch 2, the two work together to comprehensively prevent misoperation through double protection, ensure the accurate and stable state switching of the micro switch 2, reduce the maintenance cost, prolong the service life of the device, and improve the overall performance and reliability of the locking power-off device 100.

[0039] In some embodiments, the first locking assembly 3 further includes a crossbar 33 connected to the closing button 21, so that the closing button 21 drives the crossbar 33 to be movable in the up-down direction, and when the closing button 21 is popped out of the micro switch 2, the crossbar 33 cooperates with the locking member 32 to lock the position of the crossbar 33. Specifically, as shown in the first state, Figures 2-4 ​As shown, the crossbar 33 is a horizontal bar extending in the left-right direction, and the crossbar 33 is installed on the left side of the closing button 21, and the right end of the crossbar 33 is connected to the left side surface of the closing button 21, allowing the crossbar 33 to move along the up-down direction with the closing button 21 when the closing button 21 is extended or retracted from the micro switch 2, while keeping the relative position with the closing button 21 stable. When the closing button 21 is extended out of the micro switch 2, driving the crossbar 33 to rise to the locking area, the locking member 32 is triggered automatically or manually, locking the crossbar 33 at the current position.

[0040] Therefore, the cooperation of the crossbar 33 and the locking member 32 ensures the high reliability and safety of the locking power-off device 100. The specific process is as follows: when the circuit needs to be disconnected, the paddle 31 drives the closing button 21 to extend out of the micro switch 2, while driving the crossbar 33 to rise to the locking area. The locking member 32 locks the crossbar 33 at the current position after detecting that the crossbar 33 reaches the locking area. At this time, the closing button 21 cannot be pressed. Under the action of the locking member 32, the crossbar 33 and the closing button 21 are kept in the disconnected position, and even if disturbed by external force, the state will not change. This ensures that the circuit can be stably kept in the disconnected state when it needs to be disconnected.

[0041] When the circuit needs to be reconnected, the locking of the locking member 32 needs to be released first, and the closing button 21 is retracted into the micro switch 2, at which time the circuit is connected, and the device returns to the initial state.

[0042] In some embodiments, the locking member 32 includes a first baffle 321 and a second baffle 322, and the first baffle 321 and the second baffle 322 are spaced apart in the up-down direction in the mounting box 1, and the first baffle 321 and the second baffle 322 are movable between a third position and a fourth position relative to the width direction (such as the front-back direction shown) of the mounting box 1, and in the third position, the paddle 31 and the crossbar 33 are spaced apart from the first baffle 321 and the second baffle 322 and the locking member 32 along the width direction of the mounting box 1, and in the fourth position, the paddle 31 abuts against the lower end surface of the first baffle 321 to limit the upward movement of the paddle 31 to lock the paddle 31, and the crossbar 33 abuts against the lower end surface of the second baffle 322 to limit the upward movement of the crossbar 33 to lock the crossbar 33. Figure 1 As shown, the crossbar 33 is a horizontal bar extending in the left-right direction, and the crossbar 33 is installed on the left side of the closing button 21, and the right end of the crossbar 33 is connected to the left side surface of the closing button 21, allowing the crossbar 33 to move along the up-down direction with the closing button 21 when the closing button 21 is extended or retracted from the micro switch 2, while keeping the relative position with the closing button 21 stable. When the closing button 21 is extended out of the micro switch 2, driving the crossbar 33 to rise to the locking area, the locking member 32 is triggered automatically or manually, locking the crossbar 33 at the current position. Figure 3 and Figure 8 As shown, the locking member 32 is composed of a first baffle 321 and a second baffle 322, and the first baffle 321 and the second baffle 322 are spaced apart in the up-down direction in the mounting box 1, and the first baffle 321 and the second baffle 322 are movable in the mounting box 1 along the front-back direction, from the third position to the fourth position, to realize the locking and unlocking of the paddle 31 and the crossbar 33.

[0043] In the third position, the first baffle 321 is spaced apart from the toggle 31 in the front-rear direction and does not interfere with the normal movement of the toggle 31. When it is necessary to lock the toggle 31, the first baffle 321 is moved to the fourth position, and the left end of the toggle 31 is located below the first baffle 321 and abuts against the lower end surface of the first baffle 321, thereby limiting the upward movement of the toggle 31, so that the toggle 31 cannot drive the closing button 21 to retract into the micro switch 2. Therefore, the closing button 21 is stably kept in the extended state, and the circuit remains open.

[0044] In the third position, the second baffle 322 is spaced apart from the crossbar 33 in the front-rear direction and does not affect the movement of the crossbar 33. When it is necessary to lock the crossbar 33, the second baffle 322 is moved to the fourth position, and the crossbar 33 is located below the second baffle 322 and the upper end surface of the crossbar 33 abuts against the lower end surface of the second baffle 322, thereby limiting the upward movement of the crossbar 33. Since the crossbar 33 cannot move upward, the closing button 21 is also locked in the extended state, further ensuring the opening of the circuit.

[0045] Therefore, when it is necessary to open the circuit and lock the closing button 21, the user or the control system drives the first baffle 321 and the second baffle 322 to the fourth position at the same time. The first baffle 321 locks the toggle 31 to prevent its upward movement, and the second baffle 322 locks the crossbar 33 to also prevent its upward movement. This makes the closing button 21 double-locked in the extended state, and the circuit is stably open.

[0046] When it is necessary to reconnect the circuit, the first baffle 321 and the second baffle 322 are driven to return to the third position. At this time, the first baffle 321 and the toggle 31, and the second baffle 322 and the crossbar 33 are all spaced apart in the width direction of the mounting box 1 and no longer form a physical obstruction. The user can press the closing button 21 to retract it into the micro switch 2, while driving the toggle 31 and the crossbar 33 to move downward, and the circuit is connected.

[0047] In some embodiments, the telescopic member 41 is a latching electromagnet. In the first state, the latching electromagnet is energized to elongate the latching electromagnet, so that the latching electromagnet is energized to drive the toggle 31 to the first position. In the second state, the latching electromagnet is de-energized to shorten the latching electromagnet, and the closing button 21 is extended out of the micro switch 2. Specifically, as shown in Figures 2-6 the latching electromagnet is composed of an electromagnetic coil, an iron core, a spring, and an attached mechanical connecting component. When the electromagnetic coil is energized, a magnetic field is generated to attract the iron core, causing the iron core to move. When de-energized, the magnetic field disappears, and the iron core returns to its original position under the action of the spring, so that the latching electromagnet can realize the actions of elongation and shortening in the two states of energization and de-energization.

[0048] When the electromagnetic coil of the locking electromagnet is energized, the current passing through the electromagnetic coil generates a magnetic field that rapidly attracts the iron core to move towards the center of the electromagnet. With the movement of the iron core, the overall length of the locking electromagnet increases, and the elongated locking electromagnet contacts the paddle 31 through the locking tongue of the locking electromagnet. With the continuous elongation of the locking electromagnet, the locking tongue of the locking electromagnet exerts upward pressure on the paddle 31, forcing the paddle 31 to move from the inclined state (second position) to the horizontal state (first position). In the first position, the paddle 31 drives the closing button 21 to fully retract into the microswitch 2, causing the microswitch 2 to open and the circuit to be connected. In the first state, the locking electromagnet remains energized, and the locking electromagnet continuously exerts upward pressure on the paddle 31, ensuring that the paddle 31 is stably positioned in the first position, thereby effectively preventing the paddle 31 from moving due to accidental touch or external interference, ensuring the stable connection of the circuit.

[0049] When the electromagnetic coil of the locking electromagnet is de-energized, the current in the electromagnetic coil rapidly decays to zero, and the magnetic field disappears. The locking tongue of the locking electromagnet begins to move downward under the action of the spring, causing the overall length of the locking electromagnet to decrease. With the shortening of the locking electromagnet, the locking tongue of the locking electromagnet separates from the paddle 31, releasing the upward pressure on the paddle 31. At this time, the paddle 31 moves from the horizontal state (first position) to the inclined state (second position) under the action of its own elasticity and its own gravity. In the second position, the paddle 31 no longer exerts upward pressure on the closing button 21, and the closing button 21 is pushed out of the microswitch 2 by the internal spring or external force, causing the microswitch 2 to close and the circuit to be disconnected. In the second state, the locking electromagnet is de-energized and cannot exert continuous pressure on the paddle 31. Thus, even if the paddle 31 tries to move to the first position under external force, it cannot be achieved due to the lack of driving by the locking electromagnet, effectively preventing the occurrence of mis-closing operation.

[0050] In summary, by designing the telescopic member 41 as a locking electromagnet, the second locking assembly 4 achieves precise control of the position of the paddle 31 and reliable locking of the state of the closing button 21. In the first state, the locking electromagnet is energized and elongated to drive the paddle 31 to the first position, ensuring the connection of the circuit; in the second state, the locking electromagnet is de-energized and shortened, and the closing button 21 is pushed out of the microswitch 2, causing the circuit to be disconnected. Thus, not only the safety and reliability of the electric operation are improved, but also the operation process is simplified through the automatic mode of electromagnetic control, reducing the risk of human error.

[0051] In some embodiments, the second locking assembly 4 further includes a driving member 42 provided on the telescopic member 41. In the second state, the driving member 42 drives the telescopic member 41 to move so that the telescopic member 41 is staggered with the paddle 31 in the up-down direction. Specifically, as shown in FIG. 4, the driving member 42 is provided on the telescopic member 41, and the telescopic member 41 is arranged to be staggered with the paddle 31 in the up-down direction. Figure 3As shown, the drive member 42 is mounted outside the locking electromagnet, and the two ends of the drive member 42 are connected with the locking electromagnet and the inner circumferential surface of the mounting box 1 respectively, so as to directly drive the locking electromagnet to move in the front-back direction when energized.

[0052] In the second state, the drive member 42 is opened to drive the telescopic member 41 to move forward, so that the lock tongue at the front end of the telescopic member 41 gradually separates from the paddle 31, until the telescopic member 41 is completely shortened and the paddle 31 is obviously staggered in the up-down direction, thereby releasing the constraint of the telescopic member 41 on the paddle 31, so that the paddle 31 can freely move to the inclined state (second position) without external force.

[0053] After the paddle 31 moves to the inclined state, the closing button 21 extends out of the micro switch 2 under the action of the internal spring or external reset mechanism. Since the telescopic member 41 and the paddle 31 have been completely staggered, the extension process of the closing button 21 is not hindered, and can be stably maintained in the open position. At this time, the micro switch 2 is closed, the circuit is disconnected, and the expected safety effect is achieved. Thus, the accurate staggering of the telescopic member 41 and the paddle 31 in the second state is achieved by the drive member 42, and the safety and reliability of the electric operation are improved.

[0054] In some embodiments, the lower end surface of the telescopic member 41 is provided with a first conductive contact, the mounting box 1 is provided with a second conductive contact connected with an external power supply device, in the first state, the first conductive contact and the second conductive contact are connected, so that the external power supply device supplies power to the telescopic member 41 through the first conductive contact and the second conductive contact, and in the second state, the first conductive contact and the second conductive contact are spaced apart in the width direction of the mounting box 1, so that the external power supply device is disconnected with the telescopic member 41. Specifically, the first conductive contact is fixedly installed on the lower end surface of the telescopic member 41, and the first conductive contact is connected with the power input end of the locking electromagnet through an internal lead wire. The second conductive contact is provided on the lower end surface of the inner circumferential surface of the mounting box 1, and is made of high-conductivity material and connected with the output end of the external power supply device (such as a low-voltage direct-current power supply) through an external lead wire. In the first state, the first conductive contact and the second conductive contact are in contact, so that the current generated by the external power supply device supplies power to the telescopic member 41 through the first conductive contact and the second conductive contact, and in the second state, the drive member 42 drives the telescopic member 41 to move forward, so that the first conductive contact gradually separates from the second conductive contact, thereby disconnecting the telescopic member 41 with the external power supply device, and ensuring the safe disconnection of the circuit

[0055] In some embodiments, the drive member 42 includes a connecting barrel 43, a first piston rod 433 and a second piston rod 434,

[0056] The connecting cylinder 43 comprises a first cylinder 431 extending in the up-down direction and a second cylinder 432 extending in the width direction of the mounting box 1, the lower end of the first cylinder 431 and one end of the second cylinder 432 are communicated, and the second cylinder 432 is arranged on the telescopic member 41. Specifically, as shown in Figure 5 the connecting cylinder 43 adopts an L-shaped split structure, the connecting cylinder 43 comprises a first cylinder 431 (a vertical section extending in the up-down direction) and a second cylinder 432 (a vertical section extending in the front-back direction), the lower end of the first cylinder 431 and the front end of the second cylinder 432 are communicated through a circular arc transition section to form a gas flow passage, and the second cylinder 432 is fixedly arranged on the telescopic member 41.

[0057] The first piston rod 433 is arranged in the first cylinder 431, and the upper end of the first piston rod 433 extends out of the first cylinder 431 and is connected to the upper end of the telescopic member 41, one end of the second piston rod 434 is arranged in the second cylinder 432, and the other end of the second piston rod 434 extends out of the second cylinder 432 and abuts against the inner circumferential surface of the mounting box 1, and gas is arranged between the first piston rod 433 and the second piston rod 434, the telescopic member 41 is shortened to drive the first piston rod 433 to move downward, the first piston rod 433 drives the second piston rod 434 to extend out of the second cylinder 432 through the gas, so as to drive the telescopic member 41 to move.

[0058] Specifically, as shown in Figure 4 and 5 the first piston rod 433 is a vertical rod extending in the up-down direction, and the lower end of the first piston rod 433 is arranged in the first cylinder 431, and the upper end of the first piston rod 433 is connected to the lock tongue of the telescopic member 41 and moves in the up-down direction in the first cylinder 431, the second piston rod 434 is a horizontal rod extending in the front-back direction, and the front end of the second piston rod 434 is arranged in the second cylinder 432, and the rear end of the second piston rod 434 abuts against the rear side surface of the mounting box 1, the second piston rod 434 can move in the front-back direction in the second cylinder 432, and gas can be filled between the first piston rod 433 and the second piston rod 434, when the telescopic member 41 is shortened under the action of the spring, the first piston rod 433 moves downward synchronously with the telescopic member 41, and due to the restriction of the closed end of the first cylinder 431, the first piston rod 433 moves downward to compress the gas in the cylinder, so that the gas pressure increases suddenly. The pressure is transmitted to the second piston rod 434 through the communicated first cylinder 431 and second cylinder 432, the second piston rod 434 extends out of the second cylinder 432, thereby driving the telescopic member 41 to move forward, at this time, the first conductive contact and the second conductive contact are separated, and the circuit is disconnected.

[0059] In some embodiments, the locking power-off device 100 further comprises a mounting frame 5 arranged in the mounting box 1 and movable relative to the width direction of the mounting box 1, and the first locking assembly 3 and the second locking assembly 4 are arranged in the mounting frame 5. Specifically, asFigure 4 As shown, the mounting frame 5 is welded from high-strength aluminum alloy profiles and has an overall L-shaped structure. The mounting frame 5 is set inside the mounting box 1 and moves in the front-to-back direction inside the mounting box 1. The telescopic component 41 and the locking component 32 are both set on the mounting frame 5, so that the telescopic component 41 and the locking component 32 can be moved by driving the mounting frame 5.

[0060] In some embodiments, the locking power-off device 100 further includes a sliding plate 6 and a drive plate 7.

[0061] The sliding plate 6 extends along the width of the mounting box 1, and the mounting bracket 5 is disposed on the sliding plate 6 and moves on the sliding plate 6. Specifically, as shown... Figure 4 As shown, the sliding plate 6 adopts a rectangular plate structure that extends in the front-to-back direction. The sliding plate is set inside the mounting box 1 and above the mounting frame 5, so that the mounting frame 5 slides on the sliding plate 6 in the left-to-right direction.

[0062] The driver board 7 runs along the length of the mounting box 1 (e.g.) Figure 1 Extending in the left-right direction (as shown), the drive plate 7 is located inside the mounting box 1 and connected to the mounting bracket 5. The other end of the drive plate 7 extends beyond the sliding plate 6, so that the mounting bracket 5 can be moved via the drive plate 7. Specifically, as... Figure 4 As shown, the drive plate 7 is a horizontal rod extending in the left and right direction. The drive plate 7 passes through the mounting box 1 and its right end is connected to the mounting bracket 5. The left end of the drive plate 7 extends out of the mounting box 1. Thus, by driving the drive plate 7 to move in the front and back direction, the locking member 32 and the telescopic member 41 are moved.

[0063] In some embodiments, the upper end face of the telescopic member 41 is provided with a ball bearing 8, which is rotatably disposed within the upper end face of the telescopic member 41 and at least partially protrudes from the upper end face of the telescopic member 41. Specifically, as shown in... Figure 6 As shown, the upper end face of the locking tongue of the locking electromagnet is provided with multiple balls 8. When the telescopic member 41 moves up and down under the drive of the locking electromagnet, the balls 8 contact the lower end face of the lever 31, converting sliding friction into rolling friction, which significantly reduces driving energy consumption and wear rate. At the same time, the point contact characteristics of the balls 8 ensure accurate movement direction and prevent the telescopic member 41 from jamming.

[0064] The locking power-off device 100 of the present invention will be described in detail below, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 8As shown, including the installation box 1 and the micro switch 2 mounted to the inside by bolts, one side of the micro switch 2 is provided with a closing button 21 and a dial 31 for driving the closing button 21; also includes a second locking assembly 4, which is arranged in the inside of the installation box 1 and is used for carrying out the tripping locking process; wherein the locking assembly includes a first locking assembly 3 and a second locking assembly 4, including a movable locking electromagnet and a first baffle 321, the locking electromagnet is provided with a lock tongue for driving the dial 31, one side of the first baffle 321 is in contact with one side of the dial 31, and the outside of the locking electromagnet and the first baffle 321 is provided with a mounting frame 5 which is slidingly connected to the inside of the installation box 1.

[0065] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 8 , the first locking assembly 3 further includes a second baffle 322, which is mounted to the upper end of the first baffle 321, and the outside of the closing button 21 is provided with a crossbar 33 above the dial 31, and the inclined surface of the second baffle 322 close to the first baffle 321 is in contact with the outside of the crossbar 33; two first conductive contacts are mounted on the locking electromagnet through wires, and two second conductive contacts are also provided in the inside of the installation box 1.

[0066] The user can complete the tripping operation by two ways of manual and power driven;

[0067] When the manual mechanical locking power-off is carried out, the mounting frame 5 can be driven to move translationally, so that the mounting frame 5 drives the lock tongue on the locking electromagnet to separate from the closing button 21 and to be misaligned, at this time the closing button 21 pops out, pushes the dial 31 to move and to be in an inclined state, to achieve the effect of power-off, in the movement process of the locking electromagnet, the first baffle 321 which moves synchronously with the locking electromagnet moves to the top of the dial 31 and limits it, so that the dial 31 cannot move upward to touch the closing button 21, to complete the locking process, the second baffle 322 will also touch the crossbar 33 connected with the closing button 21, to ensure the pop-out effect of the closing button 21 and to limit its reset movement, by separating the lock tongue from the closing button 21, limiting the closing button 21 and the dial 31, multiple locking processes are completed;

[0068] When the cut-off locking electromagnet is powered off to complete the locking, the locking electromagnet is powered off, and then the locking tongue on the locking electromagnet is pulled by the internal spring and retracted into the inside. During the retraction, the translational movement of the locking electromagnet is also driven, the locking tongue and the closing button 21 are separated and misaligned, the power-off effect is achieved, the second conductive contact on the outside of the locking electromagnet is separated from the first conductive contact in the mounting box 1, so that even if the user accidentally powers it on later, the locking electromagnet cannot drive the locking tongue to move, and during the movement of the locking electromagnet, the above locking process is repeated, and the locking tongue and the closing button 21 are separated, the closing button 21 is limited, and the locking is completed. The locking process is completed by the separation of the locking tongue and the closing button 21, the limiting of the closing button 21 and the limiting of the paddle 31.

[0069] The first conductive contact provided on the outside of the locking electromagnet is connected with the second conductive contact in the mounting box 1, so that the locking electromagnet is powered on.

[0070] After the opening operation is completed, the diversified power-off locking process is automatically completed, and the locking electromagnet is in a power-off state. In this state, even if the user manually resets the mounting frame 5, the locking electromagnet is in a power-off state, and the locking tongue cannot drive the paddle 31 and the closing button 21 to close.

[0071] And if the user accidentally powers on the locking electromagnet, but the corresponding first and second conductive contacts are not in contact at this time, the locking electromagnet cannot be powered on, and the locking tongue cannot drive the paddle 31 and the closing button 21 to close.

[0072] And in the state that the mounting frame 5 does not move, the first and second baffles 321 and 322 are used to limit the paddle 31 and the closing button 21, which can also reduce the closing misoperation and achieve good power-off locking effect.

[0073] It should be noted that the wire used on the locking electromagnet is a single-core wire that is not easy to deform.

[0074] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , a driving member 42 is installed between the locking electromagnet and the locking tongue, and the driving member 42 includes two connecting barrels 43, and the connecting barrels 43 are provided with a first piston rod 433 and a second piston rod 434 vertically distributed inside.

[0075] During the retraction of the locking tongue, the locking tongue drives the corresponding first piston rod 433 in the connecting barrel 43 to move, and then the mounting frame 5 is translated along the second piston rod 434 axis connected to the inner wall of the mounting box 1 under the extrusion of the gas in the connecting barrel 43, the locking tongue and the closing button 21 are separated and misaligned, and the first baffle 321 and the second baffle 322 are driven to be in place.

[0076] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 shown, the bottom of the mounting frame 5 is mounted with a sliding plate 6 in sliding connection with the inner bottom wall of the mounting box 1, the inside of the sliding plate 6 is provided with a limiting hole, and the limiting hole is inserted with a limiting rod 9, one end of the limiting rod 9 extends to the outside of the mounting box 1.

[0077] The sliding plate 6 is used to support and slide the mounting frame 5, and in the movement process, the limiting rod 9 is inserted into the limiting hole to complete the limiting process.

[0078] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 shown, one side of the mounting frame 5 is mounted with a driving plate 7 which penetrates and is in sliding connection with the outside of the mounting box 1, one end of the limiting rod 9 is mounted with a C-shaped rod 10, and one end of the C-shaped rod 10 is inserted into the inside of the driving plate 7.

[0079] The user can manually dial the driving plate 7 to make the mounting frame 5 move, and after the mounting frame 5 moves to the position, the C-shaped rod 10 will be inserted into the inside of the driving plate 7 to limit it.

[0080] As Figure 2 , Figure 3 and Figure 4 shown, the outside of the limiting rod 9 is sleeved with a reset spring 11, one end of the reset spring 11 is fixedly mounted to the outside of the limiting rod 9, and the other end of the reset spring 11 is mounted to the inner wall of the mounting box 1.

[0081] As Figure 2 shown, at this time, the reset spring 11 is in a normal state, and when the locking tongue and the dial piece 31 are in a state of resistance, the reset spring 11 is in a compressed state, so that under the breaking operation, the deformation force of the reset spring 11 will drive the limiting rod 9 to resist the sliding plate 6 in the movement process, until the limiting hole in the sliding plate 6 is aligned with the limiting rod 9, and then the limiting rod 9 will be inserted into the limiting hole to complete the double-end limiting process of the mounting frame 5 and the driving plate 7.

[0082] As Figure 2 , Figure 3 and Figure 7 shown, one end of the limiting rod 9 and one side of the locking tongue are provided with a ball 8.

[0083] The setting of the ball 8 can reduce the friction and jam phenomenon between the locking tongue and the dial piece 31, and reduce the friction resistance between the limiting rod 9 and the sliding plate 6.

[0084] As Figure 4 and Figure 8As shown, one end of the crossbar 33 is rotatably arranged, and the outer side of the rotatable end of the crossbar 33 is in contact with the inclined surface of the bottom of the second baffle 322.

[0085] This can reduce the friction generated between the second baffle 322 and the crossbar 33 when the second baffle 322 is released from the limiting position, thereby prolonging the service life of the equipment while ensuring the limiting effect.

[0086] The application also provides a locking power-off protection method for preventing misoperation of closing with a grounding wire, and the specific steps are as follows.

[0087] S1, when the user selects mechanical locking power-off, the driving plate 7 can be dialed to separate and dislocate the locking tongue on the locking electromagnet from the closing button 21, at this time, the closing button 21 is popped out, the dial piece 31 is pushed to move and is in an inclined state, and the power-off effect is achieved.

[0088] S2, during the movement of the locking electromagnet, the first baffle 321 which moves synchronously with the locking electromagnet moves to the top of the dial piece 31 to limit it, so that the dial piece 31 cannot move upward to touch the closing button 21, the locking process is completed, and the second baffle 322 will touch the crossbar 33 connected with the closing button 21 to ensure the pop-out effect of the closing button 21.

[0089] S3, when the user selects power-off of the locking electromagnet to achieve locking power-off, the power supply of the locking electromagnet can be cut off, and then the locking tongue on the locking electromagnet will retract into it, during the retraction process, the locking tongue will drive the corresponding first piston rod 433 in the connecting cylinder 43 to move, and then under the extrusion action of the gas in the connecting cylinder 43, the mounting frame 5 will move along the connecting rod 314 axis connected with the inner wall of the mounting box 1 to complete the separation and dislocation of the locking tongue and the closing button 21, and the power-off effect is achieved.

[0090] S4, after the dislocation and separation of the locking electromagnet, the conductive contact on the outer side of the locking electromagnet is separated from the conductive contact in the mounting box 1, so that even if the user accidentally powers it later, the locking electromagnet cannot drive the locking tongue to move, and at this time, the S2 step will be implemented again.

[0091] S5, when the mounting frame 5 moves in the S1 step and the S3 step, the limiting hole on the bottom sliding plate 6 of the mounting frame 5 will move to the end of the limiting rod 9, and then under the driving of the return spring 11, the limiting rod 9 is inserted into the limiting hole, the limiting of the mounting frame 5 is completed, the C-shaped rod 10 which moves with the limiting rod 9 is inserted into the driving plate 7, the limiting of the driving plate 7 is completed, and the diversified locking process is completed.

[0092] Need to explain the setting, the user can carry out the operation of breaking the brake, can choose manual operation and cut off the locking electromagnet according to the use demand, but the user after manual breaking, at this time, the locking electromagnet and the corresponding conductive contact is separated, and the power supply of the locking electromagnet is cut off, to ensure the best locking power-off processing effect, reduce the damage of the limiting rod 9 at the same time, the driving plate 7 is accidentally reset, the corresponding conductive contact is connected, the phenomenon of accidental power supply occurs, and the locking electromagnet can be powered by built-in power supply or mains power supply, the specific use demand is selected according to the actual situation.

[0093] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0094] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0095] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0096] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0097] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. Exemplary representations of the above terms in the specification are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in the specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0098] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A locking power-off device, characterized in that, include: Mounting box; A micro switch is provided, wherein the micro switch is disposed inside the mounting box and a closing button is provided at the lower end of the micro switch. When the closing button is located inside the micro switch, the micro switch is turned on; when the closing button is extended outside the micro switch, the micro switch is turned off. A first locking assembly includes a lever and a locking element disposed within the mounting box. One end of the lever is located at the lower end of the micro switch and is connected to the micro switch. The closing button abuts against the lever. The lever is movable relative to the micro switch in a vertical direction between a first position and a second position. In the first position, the lever is in a horizontal state so that the lever drives the closing button to be located inside the micro switch to open the micro switch. In the second position, the lever is in an inclined state so that the closing button is located outside the micro switch to close the micro switch. The lever cooperates with the locking element to lock the lever. The second locking assembly includes a telescopic member disposed within the mounting box and movable relative to the mounting box along the width direction of the mounting box. The locking power-off device includes a first state and a second state. In the first state, the telescopic member extends and abuts against the lever to place the lever in a first position. In the second state, the telescopic member shortens or the telescopic member is offset from the lever in the vertical direction to place the lever in a second position.

2. The interlocking power-off device according to claim 1, characterized in that, The first locking assembly also includes a crossbar connected to the closing button, so that the closing button can move the crossbar between the vertical direction. When the closing button extends out of the micro switch, the crossbar cooperates with the locking member so that the locking member locks the position of the crossbar.

3. The interlocking power-off device according to claim 2, characterized in that, The locking element includes a first baffle and a second baffle. The first baffle and the second baffle are spaced apart in the mounting box along the vertical direction, and both the first baffle and the second baffle are movable between a third position and a fourth position relative to the width direction of the mounting box. In the third position, the paddle and the crossbar are spaced apart from the first baffle and the second baffle and the locking element along the width direction of the mounting box. In the fourth position, the paddle abuts against the lower end face of the first baffle to restrict the upward movement of the paddle and lock the paddle, and the crossbar abuts against the lower end face of the second baffle to restrict the upward movement of the crossbar and lock the crossbar.

4. The interlocking power-off device according to claim 1, characterized in that, The telescopic component is a locking electromagnet. In the first state, the locking electromagnet is energized to extend it, so that the locking electromagnet drives the lever to be in the first position. In the second state, the locking electromagnet is de-energized to shorten it, and the closing button extends out of the micro switch.

5. The interlocking power-off device according to claim 4, characterized in that, The second locking assembly further includes a drive member disposed on the telescopic member. In the second state, the drive member drives the telescopic member to move so that the telescopic member and the lever are offset in the vertical direction.

6. The interlocking power-off device according to claim 5, characterized in that, The lower end face of the telescopic component is provided with a first conductive contact, and the mounting box is provided with a second conductive contact, which is connected to an external power supply device. In the first state, the first conductive contact and the second conductive contact are connected so that the external power supply device supplies power to the telescopic component through the first conductive contact and the second conductive contact. In the second state, the first conductive contact and the second conductive contact are spaced apart along the width direction of the mounting box so that the external power supply device is disconnected from the telescopic component.

7. The interlocking power-off device according to claim 5, characterized in that, The driving component includes: A connecting cylinder, comprising a first cylinder and a second cylinder, wherein the first cylinder extends in a vertical direction and the second cylinder extends in a width direction of the mounting box, wherein the lower end of the first cylinder and one end of the second cylinder are connected, and the second cylinder is disposed on the telescopic member; A first piston rod and a second piston rod are present. The first piston rod passes through the first cylinder, with its upper end extending out of the first cylinder and connected to the upper end of the telescopic member. One end of the second piston rod passes through the second cylinder, with its other end extending out of the second cylinder. The other end of the second piston rod abuts against the inner circumferential surface of the mounting box. Gas is provided between the first piston rod and the second piston rod. The telescopic member shortens to drive the first piston rod to move downward. The first piston rod drives the second piston rod to extend out of the second cylinder through the gas, thereby driving the telescopic member to move.

8. The interlocking power-off device according to claim 1, characterized in that, It also includes a mounting bracket, which is disposed within the mounting box and movable relative to the width direction of the mounting box, wherein both the first locking component and the second locking component are disposed within the mounting bracket.

9. The interlocking power-off device according to claim 8, characterized in that, Also includes: A sliding plate that extends along the width of the mounting box, the mounting bracket being mounted on the sliding plate and movable on the sliding plate; A drive plate extends along the length of the mounting box, is disposed inside the mounting box and connected to the mounting bracket, and has its other end protruding outside the sliding plate so as to drive the mounting bracket to move.

10. The interlocking power-off device according to claim 1, characterized in that, The upper end face of the telescopic member is provided with a ball bearing, which is rotatably disposed within the upper end face of the telescopic member and at least partially protrudes from the upper end face of the telescopic member.

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