A circuit breaker opening and closing locking mechanism

Abstract

The application relates to a circuit breaker opening and closing locking mechanism and relates to the technical field of circuit breakers. The circuit breaker opening and closing locking mechanism comprises a base plate, the upper side of the base plate is provided with a button for controlling closing, the upper side of the base plate is provided with a linkage assembly linked with the button, the upper side of the base plate is provided with a locking assembly, the locking assembly comprises a program lock for controlling the linkage assembly and a knob, the knob is used for controlling the closing of the button, the outer side of the program lock is provided with a lock rod, the upper side of the base plate is provided with an interlocking assembly linked with the button and controlled by the lock rod. The linkage assembly, the locking assembly and the interlocking assembly are arranged, the program lock on two circuit breakers shares one knob, the knob cannot be used for unlocking the closing of another circuit breaker when one circuit breaker is in the closing state, so that the opening and closing mechanisms of the two circuit breakers are prevented from being closed simultaneously.

Description

Technical Field

[0001] This application relates to the technical field of circuit breakers, and in particular to a circuit breaker opening and closing locking mechanism. Background Technology

[0002] In the power grid, many users have high requirements for power supply reliability, such as coal mines and oil refineries. Once a power outage occurs in these units, it will cause significant economic losses and even casualties. Therefore, the power supply systems of these units need to have a main power supply and a backup power supply. When the main power supply fails, the backup power supply must be put into operation immediately to restore power supply.

[0003] In the prior art, two circuit breakers are connected to the corresponding lines of the main power supply and the backup power supply, respectively, to control the switching between the main power supply and the backup power supply.

[0004] However, in the aforementioned technologies, if the two circuit breakers controlling the main power supply and the backup power supply are closed simultaneously due to misoperation, it is impossible to avoid the situation where both circuit breakers are closed at the same time, which could lead to reverse power supply and pose a safety hazard. Summary of the Invention

[0005] The purpose of this application is to provide a circuit breaker opening and closing locking mechanism to solve the problem in the above-mentioned related technologies that cannot effectively prevent two opening and closing mechanisms from closing at the same time.

[0006] The circuit breaker opening and closing locking mechanism provided in this application adopts the following technical solution:

[0007] A circuit breaker opening and closing locking mechanism includes a base plate. A button for controlling the closing is provided on the upper side of the base plate. A linkage component that is linked to the button is provided on the upper side of the base plate. A locking component is provided on the upper side of the base plate. The locking component includes a program lock for controlling the linkage component and a knob. The knob is used to control the closing of the button. A locking rod is provided on the outer side of the program lock. An interlocking component that is linked to the button and controls the locking rod is provided on the upper side of the base plate.

[0008] By adopting the above technical solution, the circuit breaker is in a locked or unlocked state by controlling the program lock with a knob. When in the unlocked state, the locking component releases the locking of the linkage component, and the button can be pressed smoothly to close the circuit breaker. When the button is pressed, it drives the interlocking component to lock the locking component, so that the knob cannot be removed from the lock hole of the program lock. There is only one knob for unlocking or locking the circuit breaker for both circuit breakers. Through the setting of the linkage component, locking component and interlocking component, since the program locks on the two circuit breakers share a knob, the knob cannot be used to unlock or close the other circuit breaker when one circuit breaker is closed, thereby avoiding the simultaneous closing of the opening and closing mechanisms of the two circuit breakers.

[0009] Optionally, the lower side of the knob is provided with an insertion block and a locking block, the inner wall of the lock hole of the program lock is provided with an annular groove for the locking block to be inserted, and the side wall of the lock hole is provided with an embedded groove located above the annular groove and communicating with the annular groove.

[0010] By adopting the above technical solution, when the knob is pulled out of the corresponding lock hole, the locking rod of the program lock is fully extended. When the knob is inserted into the lock hole, the insert block is inserted into the groove and moves down into the annular groove. The locking block engages with the lock cylinder of the program lock. When the knob is turned, the insert block rotates along the annular groove and drives the lock cylinder to rotate. When the knob needs to be pulled out of the lock hole again, the knob must be rotated in the opposite direction to the original position in order to pull the insert block out along the groove. At this time, the locking rod of the program lock returns to the fully extended state as the lock cylinder rotates. Through the cooperative arrangement of the insert block, the annular groove and the groove, the locking rod of the program lock must be fully extended before the knob can be pulled out.

[0011] Optionally, a guide plate is fixedly connected to the outer side of the locking rod, a guide groove is provided on the upper side of the bracket for the guide plate to be inserted and slid, a limit plate is fixedly connected to the upper side of the push plate, and a locking plate for inserting the limit plate is provided on the side of the guide plate near the locking rod.

[0012] By adopting the above technical solution, when the circuit breaker is in the locked state, the limiting plate on the upper side of the push plate is embedded in the card plate, preventing the push plate from rotating around the axis of the first rotating shaft. At this time, the button cannot be pressed, preventing the circuit breaker from being closed by the button. When the circuit breaker is unlocked, the knob is inserted into the corresponding lock hole, and then the locking rod retracts into the program lock. During the retraction of the locking rod, the guide plate slides along the length direction of the guide groove. At this time, the card plate releases the misalignment of the limiting plate. The setting of the limiting plate and the corresponding card plate facilitates the contact limit or locking limit of the push plate by the locking component, and also facilitates the locking component to lock or unlock the circuit breaker.

[0013] Optionally, the linkage component includes a first rotating shaft and a push plate fixed to the outside of the push plate. A reset component is provided on the lower side of the first rotating shaft. A fixing screw and a roller sleeved on the outside of the fixing screw are fixedly connected to the side of the push plate. An arc-shaped toggle block is provided on the lower side of the button.

[0014] By adopting the above technical solution, when the button is pressed down, the lower side of the toggle block presses against the outer circumference of the roller, causing the roller to rotate around the axis of the first rotating shaft. The push plate rotates along with the rotation of the roller. When in the unlocked state, the locking component does not lock and limit the push plate, allowing it to rotate smoothly around the axis of the first rotating shaft. At this time, the button can be pressed smoothly, closing the circuit breaker. When in the locked state, the locking component locks and limits the push plate, preventing it from rotating around the axis of the first rotating shaft, thus preventing the button from being pressed down and the circuit breaker from closing. Through the arrangement of the first rotating shaft, push plate, and roller, the pressing down of the button can drive the roller and push plate to rotate around the first rotating shaft, facilitating the locking component's limitation of the push plate's rotation and enabling the locking component to lock or unlock the circuit breaker.

[0015] Optionally, the side of the first rotating shaft is provided with a slot for inserting a push plate, and the side of the push plate and the bottom of the slot are respectively provided with a first through hole and a second screw hole for screwing in a fixing screw.

[0016] By adopting the above technical solution, the first rotating shaft and the push plate are relatively fixed by the fixing screw. At the same time, when the locking mechanism malfunctions, the detachable connection between the first rotating shaft and the push plate facilitates the assembly and disassembly of the first rotating shaft and the push plate.

[0017] Optionally, a limiting plate is fixedly connected to the upper side of the push plate, a guide plate is provided on the outer side of the locking rod, and a clamping plate is provided on the side of the guide plate to be fixedly connected to the locking rod.

[0018] By adopting the above technical solution, when the locking rod is fully extended, the side of the limiting plate and the card plate abuts against each other, preventing the push plate from rotating around the axis of the first rotating shaft. At this time, the program lock is in a locked state. When the locking rod is not fully extended, the limiting plate and the card plate are misaligned, and the push plate can rotate around the first rotating shaft. The setting of the limiting plate and the card plate facilitates the control of the linkage component by the locking component.

[0019] Optionally, the guide plate has an extension plate on the side facing away from the locking rod, the program lock has a micro switch on the side, and the micro switch has a paddle on the outside.

[0020] By adopting the above technical solution, when the circuit breaker is in the locked state, the locking rod is fully extended, the extension plate is close to the side of the program lock and abuts against the lever, and the lever is deformed to a certain extent. At this time, the micro switch is activated, and the activation of the micro switch causes the warning light on the surface of the circuit breaker to light up, reminding that the circuit breaker is in the locked state and avoiding accidental operation by the staff.

[0021] Optionally, a reset spring is provided on the lower side of the button, located below the toggle block.

[0022] By adopting the above technical solution, a reset spring is sleeved on the lower side of the button. When the operator applies force to press the button, the reset spring is squeezed and the circuit breaker closes. When the operator stops applying force, the squeezed reset spring pushes the button upward, reducing the time for the circuit breaker to switch from the open state to the closed state, thereby further enhancing the opening speed of the circuit breaker.

[0023] Optionally, the upper side of the base plate is provided with a support rod, the interlocking assembly includes an interlocking plate located on the upper side of the support rod, the upper side of the support rod is provided with a protrusion, the upper side of the interlocking plate is provided with a plurality of waist-shaped grooves for the protrusion to be inserted and slid, the side of the interlocking plate is provided with a locking block, the lower side of the interlocking plate is provided with an elastic element, and the upper side of the base plate is provided with a rotating element.

[0024] By adopting the above technical solution and setting the interlocking components, when the circuit breaker is in the closed state, the interlocking plate moves to limit the locking block to the locking rod, preventing it from fully extending. At this time, the knob cannot be pulled out for closing another circuit breaker, making it impossible for the two circuit breakers to be in the closed state at the same time.

[0025] Optionally, the rotating component includes a second rotating shaft and a rotating plate located on the upper side of the base plate, and the side of the interlocking plate is provided with an abutment plate.

[0026] By adopting the above technical solution, the second rotating shaft and rotating plate are designed to allow the interlocking plate to slide along the length of the slot during the circuit breaker closing process. The locking block then limits the locking rod, preventing the circuit breaker knob from being removed when closed. The second rotating shaft and rotating plate are designed to allow the side of the rotating plate to abut against the side of the contact plate, which facilitates the movement of the interlocking plate along the length of the slot and makes it easier to lock the interlocking assembly to the locking assembly.

[0027] Optionally, the elastic element is a tension spring, and a fixing hole is provided on the upper side of the interlocking plate. One end of the tension spring is fixedly connected to the support rod near the rotating plate, and the other end of the tension spring is fixedly connected to the fixing hole.

[0028] By adopting the above technical solution, when the locking block on the side of the interlocking plate is moved to the locked position by the rotating plate, the interlocking plate moves along the length of the slot when the button is pressed to close the circuit, due to the tension spring. At this time, the tension spring is stretched. When the button is stopped, the circuit breaker opens, causing the rotating plate to rotate back to its original position. The tension spring, which was in a stretched state at this time, resets, causing the interlocking plate to move to its original position, releasing the locking block's locking limit on the locking rod. The locking rod can then fully extend, allowing the knob to be removed. Through the tension spring, when the circuit breaker changes from the closed state to the open state, the interlocking plate quickly moves to its original position, releasing the locking block's locking rod, thus facilitating the unlocking of the interlocking assembly from the locking assembly.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. By setting up linkage components, locking components and interlocking components, since the program locks on the two circuit breakers share a knob, the knob cannot be used to unlock and close the other circuit breaker when one circuit breaker is closed, thus ensuring that the opening and closing mechanisms of the two circuit breakers are not closed at the same time.

[0031] 2. By setting up a micro switch and a side extension plate on the guide plate, when the circuit breaker is in the locked state, the locking rod is fully extended, and the side of the extension plate close to the program lock abuts against the lever, causing the lever to deform to a certain extent. At this time, the micro switch is activated, and the activation of the micro switch causes the warning light on the outside of the circuit breaker to light up, indicating that the circuit breaker is in the locked state, thus avoiding accidental operation by the staff. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0033] Figure 2 This is a schematic diagram illustrating the structure of the button in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram illustrating the structure of the button and the linkage component in an embodiment of this application;

[0035] Figure 4 This is an exploded view of the linkage component as illustrated in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the structure when the program lock is in the locked state according to an embodiment of this application;

[0037] Figure 6 This is an exploded view of the locking component as illustrated in an embodiment of this application;

[0038] Figure 7 This is a schematic diagram of the circuit breaker in the embodiment of this application, demonstrating the program lock structure;

[0039] Figure 8 This is a schematic diagram of the structure of the program lock in the unlocked state according to an embodiment of this application;

[0040] Figure 9 This is a schematic diagram of the structure of the interlocking assembly in an embodiment of this application when the locking rod is not locked;

[0041] Figure 10 This is a schematic diagram of the interlocking assembly locking the locking rod according to an embodiment of this application.

[0042] In the diagram, 1. Housing; 2. Base plate; 21. Button; 211. Toggle block; 212. Return spring; 22. Limiting rod; 23. Bracket; 231. Guide groove; 24. Support rod; 241. Protrusion; 3. Linkage assembly; 31. First rotating shaft; 311. Slot; 312. Second screw hole; 32. Push plate; 321. First through hole; 322. Limiting plate; 33. Fixing screw; 34. Reset component; 341. Torsion spring; 35. Roller; 4. Locking assembly 41. Program lock; 411. Locking rod; 412. Ring groove; 413. Insert groove; 42. Knob; 421. Insert block; 422. Locking block; 43. Guide plate; 431. Locking plate; 432. Extension plate; 5. Interlocking assembly; 51. Interlocking plate; 511. Waist-shaped groove; 512. Locking block; 513. Abutment plate; 514. Fixing hole; 52. Rotating component; 521. Second rotating shaft; 522. Rotating plate; 53. Tension spring; 6. Micro switch; 61. Paddle. Detailed Implementation

[0043] The present application will be further described in detail below with reference to all the accompanying drawings.

[0044] Example:

[0045] Reference Figure 1 A circuit breaker opening and closing locking mechanism includes a housing 1, a base plate 2 on the upper side of the housing 1, a button 21 and a linkage component 3 on the upper side of the base plate 2, and a locking component 4 and an interlocking component 5 located on the upper side of the base plate on the side of the linkage component 3. The closing of the circuit breaker is controlled by pressing the button 21.

[0046] Reference Figure 2 A toggle block 211 is fixedly connected to the side of the button 21. The side of the toggle block 211 near the base plate 2 is curved. A reset spring 212 located under the toggle block 211 is sleeved on the outer peripheral surface of the button 21. When the button 21 is stopped from being pressed, the button 21 is reset by the reset spring 212.

[0047] Reference Figure 3 and Figure 4A linkage assembly 3 is provided on the upper side of the base plate 2. The linkage assembly 3 includes a first rotating shaft 31 and a push plate 32. The first rotating shaft 31 has a slot 311 for the push plate 32 to be inserted. The side of the push plate 32 facing away from the first rotating shaft 31 is provided with a fixing screw 33. The side of the push plate 32 and the bottom side of the slot 311 are respectively provided with a first through hole 321 and a second screw hole 312 for the fixing screw 33 to be screwed in. The push plate 32 is fixed to the first rotating shaft 31 by the fixing screw 33 and the corresponding nut. A roller 35 is sleeved on the end of the fixing screw 33 facing away from the push rod. The roller 35 rotates relative to the fixing screw 33. The outer side of the roller 35 abuts against the lower arc surface of the toggle block 211. The toggle block 211 moves downward as the button 21 is pressed. The roller 35 is squeezed and drives the push plate 32 to rotate around the axis of the first rotating shaft 31.

[0048] Reference Figure 3 A reset element 34, which is a torsion spring 341, is sleeved on the lower side of the first rotating shaft 31. Two limiting rods 22 are located on the upper surface of the base plate 2 on the lower side of the push plate 32. One end of the torsion spring 341 abuts against the limiting rod 22 on the side, and the other end abuts against the side of the push plate 32. The push plate 32 can only rotate between the two limiting rods 22. When the operator stops pressing the button 21, the torsion spring 341 resets the first rotating shaft 31 and the push plate 32 to their original positions. The roller 35 rotates in the opposite direction, causing the toggle block 211 to move upwards, thereby moving the button 21 upwards to its original position.

[0049] Reference Figure 5 and Figure 6 The base plate 2 is provided with a bracket 23 and a locking component 4 located on the upper side of the bracket 23. The locking component 4 includes a program lock 41 and a knob 42. The program lock 41 has a locking rod 411 inside. The extension amount of the locking rod 411 is controlled by the knob 42. A guide plate 43 is provided on the lower side of the locking rod 411. A locking plate 431 is provided at the end of the guide plate 43 near the locking rod 411. The end of the locking rod 411 is fixedly connected to the guide plate 43. A guide groove 231 is provided on the upper side of the bracket 23 for the guide plate 43 to be inserted and slid. The movement of the locking rod 411 drives the guide plate 43 to move along the guide groove 231.

[0050] Reference Figure 7The knob 42 has a plug 421 and a locking block 422 on its lower side. The inner wall of the lock hole of the program lock 41 has an annular groove 412. The inner wall of the lock hole has a groove 413 on the upper side of the annular groove 412 and communicating with the annular groove 412. The plug 421 can be inserted into the groove 413 and the annular groove 412 and rotated. The locking block 422 is engaged with the lock cylinder of the program lock 41. The lock cylinder of the program lock 41 adjusts the extension length of the lock rod 411 as the locking block 422 rotates. When the knob 42 is pulled out of the lock hole of the program lock 41, the lock rod 411 of the program lock 41 is in the fully extended state. When the knob 42 is turned outwards... When inserted into the lock hole, the insert 421 is inserted vertically into the groove 413 and moves into the annular groove 412. When the knob 42 is turned, the insert 421 rotates along the annular groove 412. When the knob 42 needs to be pulled out of the lock hole again, the knob 42 must be driven in the opposite direction to the original position before the insert 421 can be pulled out vertically from the groove 413. At this time, the locking rod 411 of the program lock 41 returns to the fully extended state. Therefore, due to the setting of the groove 413 and the annular groove 412, the locking rod 411 of the program lock 41 must be in the fully extended state before the knob 42 can be pulled out.

[0051] Reference Figure 5 A limit plate 322 is fixedly connected to the upper side of the push plate 32. The locking rod 411 is fully extended, and the limit plate 322 abuts against the side of the locking plate 431, so that the push plate 32 cannot rotate around the axis of the first rotating shaft 31. At this time, the program lock 41 is in the locked state, and the circuit breaker cannot be closed in this state.

[0052] Reference Figure 8 When the locking rod 411 retracts into the program lock 41, the side of the locking plate 431 approaches the side of the program lock 41. At this time, the locking plate 431 is misaligned with the limiting plate 322, and there is a gap between the limiting plate 322 and the locking plate 431. The push plate 32 can rotate around the axis of the first rotating shaft 31. At this time, the program lock 41 is in the unlocked state, and the circuit breaker can be closed in this state.

[0053] Reference Figure 5 and Figure 6 An extension plate 432 is provided at the end of the guide plate 43 facing away from the locking rod 411. A micro switch 6 is provided on the upper side of the bracket 23. The micro switch 6 includes a lever 61 located on the outside of the body. The lever 61 has a certain elastic deformation performance. When the guide plate 43 moves along the guide groove 231 with the locking rod 411, the side of the extension plate 432 abuts against the lever 61 and makes the lever 61 fit against the outside of the program lock 41. At this time, the micro switch 6 is activated and the warning light on the surface of the circuit breaker is lit, indicating that the circuit breaker is in a state where it cannot be closed.

[0054] Reference Figure 9 and Figure 10The upper side of the base plate 2 is provided with two support rods 24. The interlocking assembly 5 includes an interlocking plate 51. The upper side of the support rods 24 is provided with protrusions 241. The upper side of the interlocking plate 51 is provided with a waist-shaped groove 511 for the protrusions 241 to be inserted and slid. The side of the interlocking plate 51 is provided with a locking block 512 and a contact plate 513. The upper side of the base plate 2 is provided with a rotating member 52, wherein the rotating member 52 is a second rotating shaft 521 located on the upper surface of the base plate 2 and a rotating plate 522 sleeved on the outside of the rotating shaft. The lower side of the interlocking plate 51 is provided with an elastic member, wherein the elastic member is a tension spring 53. The surface of the interlocking plate 51 is provided with a fixing hole 514. One end of the tension spring 53 is fixedly connected to the support rod 24 near the rotating plate 522, and the other end of the tension spring 53 is fixedly connected to the fixing hole 514.

[0055] Reference Figure 10 When button 21 is pressed down, button 21 drives the second rotating shaft 521 and rotating plate 522 to rotate through the interlocking structure of the circuit breaker. When rotating plate 522 rotates, it abuts against the side of the contact plate 513, causing interlocking plate 51 to slide along the length of waist groove 511. The movement of interlocking plate 51 drives the movement of locking block 512. Locking block 512 locks and limits the card plate 431, preventing locking rod 411 from fully extending, and thus preventing knob 42 from being pulled out.

[0056] Reference Figure 9 If button 21 is not pressed down, and rotating plate 522 does not contact contact plate 513, the interlocking plate 51 moves back to its original position along the waist-shaped groove 511 via the tension spring 53. Locking block 512 is misaligned with card plate 431, allowing locking rod 411 to extend fully and knob 42 to be removed. Therefore, this circuit breaker must be closed, and then program lock 41 adjusted to the locked state before knob 42 can be pulled out for closing or opening another circuit breaker. In other words, two circuit breakers cannot be in the closed state simultaneously.

[0057] The implementation principle of this application embodiment is as follows:

[0058] Both circuit breakers share a common knob 42 on their program locks 41. When an operator unlocks one of the circuit breakers and performs a closing operation, they first insert the knob 42 into the corresponding lock hole and turn it to retract the locking lever 411 into the program lock 41. This releases the locking plate 431 from the upper limit plate 322 of the push plate 32. At this time, the extension plate 432 separates from the toggle block 211 of the micro switch 6, the micro switch 6 is open, and the warning light goes out, indicating that the circuit breaker is in the unlocked state and can be closed. The operator then presses button 21, and the toggle block 211 and roller 3 on the lower side of button 21... 5. When the roller 35 drives the push plate 32 to rotate around the axis of the first rotating shaft 31, the circuit breaker is in the closed state. When the button 21 is pressed, the second rotating shaft 521 and the rotating plate 522 are rotated through the external interlocking structure. The rotation of the rotating plate 522 causes the interlocking plate 51 to move, which drives the locking block 512 to limit and lock the locking rod 411. At this time, the locking rod 411 cannot be fully extended. That is, when this circuit breaker is in the closed state, the knob 42 cannot be used for another circuit breaker, and the two circuit breakers will not be closed at the same time.

[0059] When the operator trips and locks the circuit breaker, firstly, the operator stops pressing button 21. Under the action of the reset spring 212, button 21 automatically returns to its original position. At the same time, through the external interlocking structure, the second rotating shaft 521 and the rotating plate 522 rotate back to their original positions. Simultaneously, the stretched tension spring 53 returns to its original position, causing the interlocking plate 51 to move to its original position. At this time, the locking block 512 on the side of the interlocking plate 51 releases its lock on the locking rod 411. At this time, the first rotating shaft 31 and the push plate 32 are locked by the torsion spring 341. Under the action of the knob 42, rotate it to its original position; rotate the knob 42 in the opposite direction to make the locking rod 411 fully extend. During this process, the movement of the locking rod 411 drives the movement of the guide plate 43, which in turn causes the extension plate 432 on the side of the guide plate 43 to contact the external lever 61 of the micro switch 6. The micro switch 6 is activated, causing the warning light on the surface of the circuit breaker to light up, reminding the staff that the circuit breaker is in a locked state. The knob 42 can then be pulled out of the corresponding lock hole and applied to another circuit breaker to perform the closing operation of the other circuit breaker.

[0060] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A circuit breaker opening and closing locking mechanism, comprising a base plate (2), wherein a button (21) for controlling closing is provided on the upper side of the base plate (2), characterized in that, The upper side of the substrate (2) is provided with a linkage component (3) that is linked to the button (21). The upper side of the substrate (2) is provided with a locking component (4). The locking component (4) includes a program lock (41) for controlling the linkage component (3) and a knob (42). The knob (42) is used to control the closing of the button (21). The program lock (41) is provided with a locking rod (411) on the outside. The upper side of the substrate (2) is provided with an interlocking component (5) that is linked to the button (21) and controls the locking rod (411). The linkage component (3) includes a first rotating shaft (31) and a push plate (32) fixed to the outside of the push plate (32). The lower side of the first rotating shaft (31) is provided with a reset component (34). The side of the push plate (32) is fixedly connected with a fixing screw (33) and a roller (35) sleeved on the outside of the fixing screw (33). The lower side of the button (21) is provided with an arc-shaped toggle block (211). The base plate (2) has a support rod (24) on its upper side. The interlocking assembly (5) includes an interlocking plate (51) located on the upper side of the support rod (24). The support rod (24) has a protrusion (241) on its upper side. The interlocking plate (51) has several waist-shaped grooves (511) on its upper side for the protrusions (241) to be inserted and slid. The interlocking plate (51) has a locking block (512) on its side. The interlocking plate (51) has an elastic member on its lower side. The base plate (2) has a rotating member (52) on its upper side.

2. The circuit breaker opening and closing locking mechanism according to claim 1, characterized in that, The knob (42) has an insert (421) and a locking block (422) on its lower side. The lock hole of the program lock (41) has an annular groove (412) for the locking block (422) to be inserted into. The side wall of the lock hole has an insert groove (413) located above the annular groove (412) and communicating with the annular groove (412).

3. The circuit breaker opening and closing locking mechanism according to claim 1, characterized in that, The first rotating shaft (31) has a slot (311) for inserting the push plate (32) on its side. The push plate (32) and the bottom of the slot (311) have a first through hole (321) and a second screw hole (312) for screwing in the fixing screw (33), respectively.

4. The circuit breaker opening and closing locking mechanism according to claim 3, characterized in that, A limiting plate (322) is fixedly connected to the upper side of the push plate (32), and a guide plate (43) is provided on the outer side of the locking rod (411). A clamping plate (431) fixedly connected to the locking rod (411) is provided on the side of the guide plate (43).

5. The circuit breaker opening and closing locking mechanism according to claim 4, characterized in that, The guide plate (43) has an extension plate (432) at the end facing away from the locking rod (411), and the program lock (41) has a micro switch (6) on its side, with a paddle (61) on the outside of the micro switch (6).

6. The circuit breaker opening and closing locking mechanism according to claim 1, characterized in that, A return spring (212) located below the toggle block (211) is fitted on the lower side of the button (21).

7. The circuit breaker opening and closing locking mechanism according to claim 1, characterized in that, The rotating component (52) includes a second rotating shaft (521) and a rotating plate (522) located on the upper side of the base plate (2), and the side of the interlocking plate (51) is provided with an abutment plate (513).

8. The circuit breaker opening and closing locking mechanism according to claim 7, characterized in that, The elastic element is a tension spring (53). A fixing hole (514) is provided on the upper side of the interlocking plate (51). One end of the tension spring (53) is fixedly connected to the support rod (24) near the rotating plate (522), and the other end of the tension spring (53) is fixedly connected to the fixing hole (514).

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