An interlocking mechanism and a switchgear cabinet

Abstract

The present invention discloses an interlocking mechanism and a switch cabinet, belonging to the technical field of electrical switches. The interlocking mechanism includes a first interlocking component, a second interlocking component, and a third interlocking component. The first interlocking component is clamped with a closed cabinet door. The second interlocking component includes a driven swing arm, a driven sliding rod, and an unlocking member. The driven swing arm is connected to a first crank arm of a three-position switch, and the unlocking member is slidably disposed on the driven sliding rod. The third interlocking component is connected to a second crank arm of a circuit breaker. The interlocking mechanism provided by the present invention rotates the first crank arm from the isolation position to the grounding position. The driven swing arm pushes the driven sliding rod from the first position to the second position, so that the unlocking member is aligned with the first interlocking component. Then, the second crank arm is rotated from the opening position to the closing position, and the third interlocking component, the unlocking member, and the first interlocking component are sequentially pushed, so that the first interlocking component disengages from the cabinet door and the cabinet door opens. It is stable and reliable, and has a long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical switches, and in particular to an interlocking mechanism and a switchgear cabinet. Background Art

[0002] The circuit breaker and the three-position switch mechanism are the core components of the switchgear cabinet and are electrical devices used to connect and disconnect the circuit. The circuit breaker has two states: closing and opening; the three-position switch has three positions: connecting, isolating, and grounding.

[0003] During the operation of the switchgear cabinet, to prevent misoperation and ensure the personal safety of the operators, in addition to the interlock between the circuit breaker and the three-position switch, it is also necessary to implement the interlock between the cabinet door and the circuit breaker and the three-position switch to ensure that the cabinet door can only be opened when the three-position switch is grounded and the circuit breaker is in the ground protection state of closing.

[0004] In the related art, electrical interlocks are usually added to the switchgear cabinet body or the cabinet door, such as travel switches and electromagnets, to achieve the interlock between the cabinet door and the circuit breaker and the three-position switch. However, the electrical interlocks have a short service life and poor stability in some harsh environments. Summary of the Invention

[0005] An object of the present invention is to provide an interlocking mechanism with a relatively long service life and good stability.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] Provide an interlocking mechanism applied to a switchgear cabinet. The switchgear cabinet includes a cabinet body, a cabinet door, a three-position switch and a circuit breaker provided in the cabinet body. The interlocking mechanism includes a first interlocking component, a second interlocking component and a third interlocking component;

[0008] The second interlocking component includes a driven swing arm, a driven sliding rod and an unlocking member. The driven swing arm is connected to the first crank arm of the three-position switch, and the unlocking member is slidably provided on the driven sliding rod;

[0009] The third interlocking component is connected to the second crank arm of the circuit breaker;

[0010] When the first crank arm is in the isolation position, the driven swing arm is separated from or abutted against the driven sliding rod;

[0011] When the first crank arm rotates from the isolation position to the grounding position, the driven swing arm drives the driven sliding rod to be pushed from the first position to the second position;

[0012] When the driven sliding rod is in the first position, the unlocking member is misaligned with the first interlocking component, and the first interlocking component is clamped to the cabinet door;

[0013] When the driven sliding rod is in the second position, the unlocking member is aligned with the first interlocking assembly, and when the second toggle arm rotates from the opening position to the closing position, the third interlocking assembly, the unlocking member, and the first interlocking assembly are sequentially pushed, so that the first interlocking assembly disengages from the cabinet door.

[0014] Optionally, a sliding frame is connected to the first end of the driven sliding rod. The sliding frame includes two first side plates arranged at intervals and a bottom plate arranged between the two first side plates;

[0015] Wherein, a first sliding hole is provided on the first side plate, and the unlocking member slidably passes through the first sliding hole.

[0016] Optionally, the second interlocking assembly further includes an unlocking elastic member. The unlocking elastic member is arranged between the sliding frame and the unlocking member, and the unlocking elastic member makes the unlocking member tend to move away from the first interlocking assembly.

[0017] Optionally, the driven swing arm is provided with a convex arc portion, and the second end of the driven sliding rod is provided with a force receiving surface. The driven swing arm abuts against the force receiving surface through the convex arc portion to push the driven sliding rod to slide.

[0018] Optionally, the driven swing arm includes:

[0019] A swing arm main body;

[0020] A driven frame, fixed on the swing arm main body, and the convex arc portion is provided on the driven frame.

[0021] Optionally, a sliding groove is provided on the swing arm main body, and the driven swing arm further includes:

[0022] An adjustment plate, slidably arranged in the sliding groove, and the adjustment plate is connected to the first toggle arm;

[0023] A fastening member, and the swing arm main body and the adjustment plate are tightly connected through the fastening member.

[0024] Optionally, the second interlocking assembly further includes a telescopic rod with adjustable length. The driven swing arm is hinged to the first end of the telescopic rod, and the first toggle arm is hinged to the second end of the telescopic rod.

[0025] Optionally, a driven elastic member is connected to the driven sliding rod, and the driven elastic member makes the driven sliding rod tend to slide towards the first position.

[0026] Optionally, the first interlocking assembly includes:

[0027] A first clamping member, rotatably connected to the cabinet body, and the first clamping member is clamped with the closed cabinet door;

[0028] An interlocking slide rod, which is slidably connected to the cabinet body, and the first end of the interlocking slide rod is connected to the first clamping member; wherein, the first end of the unlocking member can push the second end of the interlocking slide rod towards the cabinet door.

[0029] An interlocking elastic member, which is connected to the interlocking slide rod, and the interlocking elastic member makes the interlocking slide rod have a tendency to slide away from the cabinet door.

[0030] Optionally, the end face of the second end of the interlocking slide rod is larger than the end face of the first end of the unlocking member.

[0031] Optionally, a guiding column is provided on the second crank arm, the third interlocking assembly includes a lever, the lever is rotatably connected to the cabinet body, the first end of the lever can push the second end of the unlocking member towards the first interlocking assembly, a first constraint hole is provided at the second end of the lever, and the guiding column is inserted into the first constraint hole and is slidably connected to the first constraint hole.

[0032] Optionally, the third interlocking assembly further includes a first pushing strip provided at the first end of the lever, a second pushing strip is provided at the second end of the unlocking member, the lever pushes the second pushing strip through the first pushing strip, and the first pushing strip and the second pushing strip are arranged at an angle.

[0033] Optionally, the circuit breaker further includes a third crank arm and a tripping device, the third crank arm rotates to have a locking position and an unlocking position, the third crank arm can limit the circuit breaker to trip through the tripping device in the locking position; the third crank arm enables the circuit breaker to trip through the tripping device in the unlocking position.

[0034] The interlocking mechanism further includes a fourth interlocking assembly, and the fourth interlocking assembly is connected to the third crank arm;

[0035] Wherein, when the fourth interlocking assembly abuts against the closed cabinet door, the third crank arm can be kept in the unlocking position;

[0036] When the cabinet door is opened, the fourth interlocking assembly can drive the third crank arm to rotate from the unlocking position to the locking position.

[0037] Optionally, the fourth interlocking assembly includes:

[0038] A first locking rod, the first end of the first locking rod can abut against the closed cabinet door;

[0039] A locking elastic member, the locking elastic member makes the first locking rod have a tendency to move towards the cabinet door;

[0040] A hinge member, the hinge member is connected to the second end of the first locking rod;

[0041] A second locking rod, a first end of the second locking rod is connected to the hinge member, and a second end of the second locking rod is connected to the third toggle arm.

[0042] Optionally, a first plate and a second plate are spaced on the cabinet body. A first limiting hole is provided on the first plate, and a second limiting hole is provided on the second plate. A first end of the first locking rod passes through the first limiting hole, and a second end of the first locking rod passes through the second limiting hole and is fixedly connected to the hinge member.

[0043] Optionally, a second restraint hole is provided on the hinge member. A linkage column is provided on the periphery of the first end of the second locking rod. The linkage column passes through the second restraint hole and is slidably connected to the second restraint hole;

[0044] And / or, the fourth interlock assembly further includes two stoppers. A second end of the second locking rod passes through the two stoppers and the third toggle arm, and the third toggle arm is located between the two stoppers.

[0045] Another object of the present invention is to further provide a switch cabinet, including a cabinet body, a cabinet door, a circuit breaker, a three-position switch, and the above-mentioned interlock mechanism: the cabinet door is provided on the cabinet body, and the circuit breaker and the three-position switch are both provided in the cabinet body.

[0046] Optionally, a second clamping member is detachably connected to the cabinet door. The cabinet door is clamped to the first interlock assembly through the second clamping member.

[0047] Beneficial effects: For the interlock mechanism provided by the present invention, when the cabinet door needs to be opened, first, the first toggle arm is rotated from the isolation position to the grounding position, so as to push the driven sliding rod from the first position to the second position through the driven swing arm, and further make the unlocking member face the first interlock assembly; then, the second toggle arm is rotated from the opening position to the closing position, so that the third interlock assembly pushes the unlocking member, and the unlocking member pushes the first interlock assembly under the action of the third interlock assembly, and further makes the first interlock assembly disengage from the cabinet door, and the cabinet door is opened. By means of mechanical interlock, when the three-position switch is in the grounded state, the circuit breaker is closed to open the cabinet door, which is stable and reliable, effectively prevents misoperation, and has a long service life in harsh environments.

[0048] In addition, when the first toggle arm is in the isolation position, the driven swing arm is separated from the driven sliding rod, and the first toggle arm can be rotated from the isolation position to the grounding position labor-savingly, and the distance that the first toggle arm rotates from the isolation position to the grounding position and pushes the driven sliding rod to slide is small, so that the sliding process of the driven sliding rod is stable, and the whole interlock mechanism has a compact structure.

[0049] When the first toggle arm is in the isolation position, the driven swing arm abuts against the driven sliding rod. Rotating the first toggle arm from the isolation position to the grounding position can reduce the impact and wear between the driven swing arm and the driven sliding rod, making the transmission between the driven swing arm and the driven sliding rod more reliable and effectively preventing jamming during the process of the driven swing arm pushing against the driven sliding rod.

[0050] The switch cabinet provided by the present invention, through the setting of the interlocking mechanism, when the three-position switch is in the grounded state, the circuit breaker can be closed to open the cabinet door, which is stable and reliable, effectively preventing misoperation, and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a schematic structural view of one perspective of the interlocking mechanism provided by the present invention;

[0052] Figure 2 is a schematic structural view of another perspective of the interlocking mechanism provided by the present invention;

[0053] Figure 3 is a schematic structural view of one perspective of a partial structure of the switch cabinet provided by the present invention;

[0054] Figure 4 is a schematic structural view of another perspective of a partial structure of the switch cabinet provided by the present invention;

[0055] Figure 5 is a schematic structural view of yet another perspective of a partial structure of the switch cabinet provided by the present invention;

[0056] Figure 6 is a schematic partial structural view of the switch cabinet provided by the present invention;

[0057] Figure 7 is a schematic partial structural view of another part of the switch cabinet provided by the present invention;

[0058] Figure 8 is a schematic structural view of the interlocking mechanism at the driven swing arm provided by the present invention;

[0059] Figure 9 is a schematic structural view of the interlocking mechanism at the second engaging member provided by the present invention;

[0060] Figure 10 is a schematic structural view of the interlocking mechanism at the second toggle arm provided by the present invention.

[0061] In the figure:

[0062] 100, Cabinet body; 101, Guide member; 102, First plate; 103, Second plate; 1031, Second limiting hole; 110, Three-position switch; 111, First crank arm; 120, Circuit breaker; 121, Second crank arm; 122, Guide post; 123, Third crank arm; 130, Telescopic rod; 140, First support frame; 141, End plate; 150, Second support frame; 160, Second clamping member;

[0063] 200, First interlock assembly; 210, First clamping member; 211, Connection hole; 220, Interlock slide bar; 221, Connection column; 230, Interlock elastic member;

[0064] 300, Second interlock assembly; 310, Driven swing arm; 3101, Convex arc portion; 311, Swing arm body; 312, Driven frame; 313, Position-adjusting plate; 320, Driven slide bar; 321, Stress surface; 322, First rod portion; 323, Second rod portion; 330, Unlocking member; 331, Second pushing strip; 340, Sliding frame; 341, First side plate; 342, Bottom plate; 3421, Guide hole; 343, Second side plate; 350, Unlocking elastic member; 361, First limiting member; 362, Second limiting member; 370, Driven elastic member; 381, Third limiting member; 382, Fourth limiting member;

[0065] 400, Third interlock assembly; 410, Lever; 411, First restraint hole; 420, First pushing strip;

[0066] 500, Fourth interlock assembly; 510, First locking rod; 511, Fifth limiting member; 520, Locking elastic member; 530, Hinge member; 531, Connection ear; 532, Second restraint hole; 540, Second locking rod; 541, Linking column. Detailed implementation manners

[0067] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0068] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0069] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0070] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0071] Referring to Figures 1 to 10 As shown, this embodiment provides an interlocking mechanism, which is applied to a switch cabinet.

[0072] Specifically, the switch cabinet includes a cabinet body 100, a cabinet door (not shown), and a three-position switch 110 and a circuit breaker 120 disposed inside the cabinet body 100. The first crank arm 111 of the three-position switch 110 rotates to have a grounding position and an isolating position, and the second crank arm 121 of the circuit breaker 120 rotates to have a tripping position and a closing position. Among them, the cabinet door is disposed on the cabinet body 100. It can be understood that the switch cabinet further includes an interlocking mechanism.

[0073] Specifically, the interlocking mechanism includes a first interlocking component 200, a second interlocking component 300, and a third interlocking component 400; among them, the second interlocking component 300 includes a driven swing arm 310, a driven sliding rod 320, and an unlocking member 330. The driven swing arm 310 is connected to the first crank arm 111, the unlocking member 330 is slidably disposed on the driven sliding rod 320, and the third interlocking component 400 is connected to the second crank arm 121.

[0074] When the first crank arm 111 is in the isolating position, the driven swing arm 310 is separated from or abutted against the driven sliding rod 320; and when the first crank arm 111 rotates from the isolating position to the grounding position, the driven swing arm 310 drives the driven sliding rod 320 to be pushed from the first position to the second position. It can be understood that when the first crank arm 111 is in the grounding position, the driven swing arm 310 abuts against the driven sliding rod 320.

[0075] Exemplarily, when the first toggle arm 111 is in the isolation position, the driven swing arm 310 is separated from the driven slide rod 320. In this embodiment, it is more labor-saving to rotate the first toggle arm 111 from the isolation position to the grounding position, and the distance that the first toggle arm 111 rotates from the isolation position to the grounding position and pushes the driven slide rod 320 to slide is small, so that the sliding process of the driven slide rod 320 is stable, and the entire interlocking mechanism has a compact structure.

[0076] Exemplarily, when the first toggle arm 111 is in the isolation position, the driven swing arm 310 abuts against the driven slide rod 320. In this embodiment, by rotating the first toggle arm 111 from the isolation position to the grounding position, the impact and wear between the driven swing arm 310 and the driven slide rod 320 can be reduced, the transmission between the driven swing arm 310 and the driven slide rod 320 is more reliable, and it is effectively prevented that the driven swing arm 310 gets stuck during the process of pushing the driven slide rod 320.

[0077] In this embodiment, when the driven slide rod 320 is in the first position, the unlocking member 330 is misaligned with the first interlocking assembly 200, and the first interlocking assembly 200 is clamped to the cabinet door. It can be understood that when the unlocking member 330 is misaligned with the first interlocking assembly 200, the first interlocking assembly 200 cannot be pushed by the unlocking member 330 to disengage from the cabinet door.

[0078] In this embodiment, when the driven slide rod 320 is in the second position, the unlocking member 330 is aligned with the first interlocking assembly 200, and when the second toggle arm 121 rotates from the opening position to the closing position, the third interlocking assembly 400, the unlocking member 330, and the first interlocking assembly 200 are sequentially pushed, so that the first interlocking assembly 200 disengages from the cabinet door.

[0079] When the cabinet door needs to be opened, first, rotate the first toggle arm 111 from the isolation position to the grounding position, so as to push the driven slide rod 320 from the first position to the second position through the driven swing arm 310, and further make the unlocking member 330 aligned with the first interlocking assembly 200; then, rotate the second toggle arm 121 from the opening position to the closing position, so that the third interlocking assembly 400 pushes the unlocking member 330, and the unlocking member 330 pushes the first interlocking assembly 200 under the action of the third interlocking assembly 400, and further makes the first interlocking assembly 200 disengage from the cabinet door, and the cabinet door is opened. By means of mechanical interlocking, when the three-position switch 110 is grounded, the circuit breaker 120 is closed to open the cabinet door, which is stable and reliable, effectively prevents misoperation, and has a long service life in a harsh environment. It can be understood that in other states of the three-position switch 110, when the circuit breaker 120 is closed or opened, the interlocking mechanism cannot open the cabinet door, which is safe and reliable.

[0080] In this embodiment, through the setting of the interlocking mechanism in the switch cabinet, when the three-position switch 110 is grounded, the circuit breaker 120 can be closed to open the cabinet door, which is stable and reliable, effectively prevents misoperation, and has a long service life.

[0081] Exemplarily, the driven sliding rod 320 can be slidably disposed on the cabinet body 100.

[0082] Exemplarily, the driven swing arm 310 can be hinged to the cabinet body 100.

[0083] In this embodiment, the sliding direction of the driven sliding rod 320 and the sliding direction of the unlocking member 330 are arranged at an angle. For example, the value range of the angle between the sliding direction of the driven sliding rod 320 and the sliding direction of the unlocking member 330 is 75°-105°, which can make the structure of the interlocking mechanism more compact. Preferably, the sliding direction of the driven sliding rod 320 and the sliding direction of the unlocking member 330 are perpendicular to each other. When the unlocking member 330 is pushed by the third interlocking assembly 400, along the sliding direction of the driven sliding rod 320, the component force of the unlocking member 330 acting on the driven sliding rod 320 is small, which can reduce the impact between the second interlocking assembly 300 and the first crank arm 111 and effectively improve the service life of the interlocking mechanism.

[0084] Exemplarily, the sliding direction of the driven sliding rod 320 can be the height direction of the cabinet body 100, and the sliding direction of the unlocking member 330 can be the front-back direction of the cabinet body 100.

[0085] In this embodiment, referring to Figures 1 to 7 As shown, a sliding frame 340 is connected to the first end of the driven sliding rod 320. The sliding frame 340 includes two first side plates 341 arranged at intervals and a bottom plate 342 disposed between the two first side plates 341. A first sliding hole (not shown) is provided on the first side plate 341, and the unlocking member 330 slidably passes through the first sliding hole. In this embodiment, the setting of the sliding frame 340 facilitates the assembly of the unlocking member 330, and the unlocking member 330 slidably passes through the first sliding holes on the two first side plates 341, effectively ensuring the sliding stability of the unlocking member 330. Of course, the unlocking member 330 can also be slidably connected to the unlocking member 330 through other structural members, such as sliding bearings, sliding sleeves, etc., which are not limited in this embodiment.

[0086] Exemplarily, the unlocking member 330 can be provided with a rod-shaped structure.

[0087] In a feasible implementation manner, a guiding member 101 is provided on the cabinet body 100, and a guiding hole 3421 is provided on the bottom plate 342. The guiding member 101 passes through the guiding hole 3421 and is slidably connected to the guiding hole 3421, which can improve the position accuracy between the unlocking member 330 and the first interlocking assembly 200.

[0088] Exemplarily, at least one guiding hole 3421, such as two, is provided on the bottom plate 342.

[0089] Exemplarily, the guiding hole 3421 can be a long hole.

[0090] In a feasible implementation, the sliding frame 340 further includes a second side plate 343 disposed between two first side plates 341, and the second side plate 343 is connected to the first end of the driven sliding rod 320. Wherein, the two first side plates 341 and the second side plate 343 can be integrally connected to improve the structural strength of the sliding frame 340. Exemplarily, the driven sliding rod 320 can be connected to the second side plate 343 through a first screw set (not shown). Specifically, the second side plate 343 is clamped between two first screw sets, and the driven sliding rod 320 passes through the two first screw sets and the second side plate 343, and the driven sliding rod 320 is threadedly connected to the first screw set.

[0091] In a feasible implementation, the cabinet body 100 can be provided with a first through hole (not shown) for the driven sliding rod 320 to pass through. In this embodiment, the first through hole and the driven sliding rod 320 can be in clearance fit or sliding fit, and this embodiment does not make a limitation.

[0092] In this embodiment, continue to refer to Figures 1 to 7 As shown, the second interlock assembly 300 further includes an unlocking elastic member 350. The unlocking elastic member 350 is disposed between the sliding frame 340 and the unlocking member 330. The unlocking elastic member 350 makes the unlocking member 330 have a tendency to move away from the first interlock assembly 200. When the third interlock assembly 400 disengages from the unlocking member 330, under the action of the unlocking elastic member 350, the unlocking member 330 can be reset to give way to the first interlock assembly 200, so that the first interlock assembly 200 can be clamped with the closed cabinet door, facilitating the closing of the cabinet door.

[0093] Specifically, a first limiting member 361 is provided on the part of the unlocking member 330 between the two first side plates 341. The unlocking elastic member 350 is sleeved on the unlocking member 330, and the unlocking elastic member 350 is clamped between the first limiting member 361 and one of the two first side plates 341 close to the first interlock assembly 200.

[0094] Exemplarily, the first limiting member 361 includes but is not limited to a screwed member or an elastic cylindrical pin.

[0095] Exemplarily, the unlocking elastic member 350 is set as a spring.

[0096] Specifically, a second limiting member 362 is further provided on the part of the unlocking member 330 between the two first side plates 341. The second limiting member 362 is disposed on the side of the first limiting member 361 away from the unlocking elastic member 350. The second limiting member 362 can abut against one of the two first side plates 341 away from the first interlock assembly 200 to limit the unlocking member 330 and prevent the unlocking member 330 from disengaging from the sliding frame 340, which is stable and reliable.

[0097] Exemplarily, the second limiting member 362 includes, but is not limited to, a screwed member or an elastic cylindrical pin.

[0098] Exemplarily, the second limiting member 362 and the first limiting member 361 may be the same component.

[0099] In this embodiment, referring to Figures 1 to 4 , Figure 8 As shown, the driven swing arm 310 is provided with a convex arc portion 3101, the second end of the driven sliding rod 320 is provided with a force-receiving surface 321, and the driven swing arm 310 abuts against the force-receiving surface 321 through the convex arc portion 3101 to push the driven sliding rod 320 to slide, effectively preventing transmission jamming between the driven swing arm 310 and the driven sliding rod 320, and can rotate the first crank arm 111 from the isolation position to the grounding position more labor-savingly, effectively improving the speed of rotating the first crank arm 111.

[0100] Exemplarily, the force-receiving surface 321 may be set as a plane to prevent transmission jamming between the driven swing arm 310 and the driven sliding rod 320. Preferably, the force-receiving surface 321 is perpendicular to the sliding direction of the driven sliding rod 320.

[0101] Specifically, the driven swing arm 310 includes a swing arm main body 311 and a driven frame 312 fixed on the swing arm main body 311, and the convex arc portion 3101 is provided on the driven frame 312. Among them, the driven frame 312 can be formed by bending, which is convenient for manufacturing. Among them, the driven swing arm 310 can be rotatably connected to the cabinet body 100 through the swing arm main body 311.

[0102] Specifically, a chute is provided on the swing arm main body 311. The driven swing arm 310 further includes an adjustment plate 313 and a fastener (not shown). The adjustment plate 313 is slidably disposed in the chute, and the swing arm main body 311 and the adjustment plate 313 are tightly connected by the fastener, which is convenient for assembly. Among them, the adjustment plate 313 is connected to the first crank arm 111. In this embodiment, by adjusting the position between the adjustment plate 313 and the swing arm main body 311, the length of the driven swing arm 310 is adjusted to further ensure the accuracy of the driven sliding rod 320 being pushed to the second position by the driven swing arm 310.

[0103] Exemplarily, chutes are provided on both sides of the swing arm main body 311, and adjustment plates 313 are respectively slidably disposed in the two chutes.

[0104] Exemplarily, the hole for the fastener to pass through the swing arm main body 311 may be a round hole, and the hole for the fastener to pass through the adjustment plate 313 may be an oblong hole.

[0105] Exemplarily, the driven swing arm 310 includes a plurality of fasteners, such as two, three or four.

[0106] In this embodiment, the second interlock assembly 300 further includes a telescopic rod 130 with adjustable length. The driven swing arm 310 is hinged to the first end of the telescopic rod 130, and the first crank arm 111 is hinged to the second end of the telescopic rod 130, ensuring stable and reliable transmission. In this embodiment, by adjusting the length of the telescopic rod 130, the accuracy of the driven slide rod 320 being pushed by the driven swing arm 310 to the second position can be guaranteed. Specifically, the position adjusting plate 313 is hinged to the first end of the telescopic rod 130.

[0107] In this embodiment, continue to refer to Figures 1 to 4 、 Figure 8 As shown, the driven slide rod 320 is connected with a driven elastic member 370, and the driven elastic member 370 makes the driven slide rod 320 have a tendency to slide towards the first position. When the first crank arm 111 rotates from the grounded position to the isolated position, under the action of the driven elastic member 370, the driven slide rod 320 resets from the second position to the first position, which is stable and reliable. In addition, through the setting of the driven elastic member 370, the impact between the driven slide rod 320 and the first crank arm 111 can be effectively reduced. Of course, the reset of the driven slide rod 320 can also be achieved by other means, such as adding a counterweight or a magnetic attraction structure that can reset the driven slide rod 320, which is not limited in this embodiment.

[0108] Specifically, a first support frame 140 is provided on the cabinet 100. The driven slide rod 320 slidably penetrates through the first support frame 140, and the driven elastic member 370 is arranged between the first support frame 140 and the driven slide rod 320, which is convenient for assembly. Of course, the driven slide rod 320 can also be slidably connected to the cabinet 100 through other structural members, such as sliding bearings, sliding sleeves, etc., which is not limited in this embodiment.

[0109] Specifically, a third limiting member 381 is provided on the driven slide rod 320. The driven elastic member 370 is sleeved on the driven slide rod 320, and the driven elastic member 370 is clamped between the third limiting member 381 and the first support frame 140, which is convenient for assembly.

[0110] Exemplarily, the third limiting member 381 includes but is not limited to a screwed member or an elastic cylindrical pin.

[0111] Exemplarily, the driven elastic member 370 is set as a spring.

[0112] Specifically, the first support frame 140 can be a U-shaped structure, including two oppositely arranged end plates 141. Among them, the third limiting members 381 and the driven elastic members 370 are arranged in one-to-one correspondence. In some embodiments, one third limiting member 381 is provided on the driven slide rod 320, and the driven elastic member 370 is arranged between the third limiting member 381 and one of the end plates 141. In other embodiments, two third limiting members 381 are provided on the driven slide rod 320, and the driven elastic member 370 is arranged between the corresponding third limiting members 381 and the end plates 141.

[0113] Specifically, a fourth limiting member 382 is provided on the driven sliding rod 320. The driven sliding rod 320 abuts against one of the end plates 141 through the fourth limiting member 382, so that the driven sliding rod 320 is maintained at the first position, which is stable and reliable.

[0114] Exemplarily, the fourth limiting member 382 includes, but is not limited to, a screwed member or an elastic cylindrical pin.

[0115] Exemplarily, the fourth limiting members 382 are provided in one-to-one correspondence with the first support frames 140. Among them, the fourth limiting member 382 can be one of the third limiting members 381, that is, the two are the same component.

[0116] Exemplarily, at least one first support frame 140 is provided on the cabinet body 100.

[0117] In a feasible implementation manner, two first support frames 140 are provided on the cabinet body 100, and the two first support frames 140 are arranged offset in the sliding direction of the driven sliding rod 320. The driven sliding rod 320 includes two first rod portions 322 and a second rod portion 323 arranged in parallel. One of the two first support frames 140 is slidably connected to the first rod portion 322, and the other is slidably connected to the second rod portion 323 to prevent the driven sliding rod 320 from rotating, that is, to prevent the unlocking member 330 from deviating from the first interlock assembly 200 and the third interlock assembly 400, which is stable and reliable. Of course, the guide rod can also be of other shapes, which is not limited in this embodiment.

[0118] Exemplarily, the first interlock assembly 200 includes at least one driven sliding rod 320.

[0119] Exemplarily, the first rod portion 322 and the second rod portion 323 can be connected by an intermediate rod portion (not shown), that is, the first rod portion 322, the second rod portion 323 and the intermediate rod portion are connected in sequence. In this embodiment, the first rod portion 322, the second rod portion 323 and the intermediate rod portion can be integrally formed or designed in a split manner, which is not limited in this embodiment.

[0120] In this embodiment, refer to Figures 1 to 6 、 Figure 9As shown in the figure, the first interlock assembly 200 includes a first clamping member 210, an interlock slide bar 220, and an interlock elastic member 230. Among them, the first clamping member 210 is rotatably connected to the cabinet body 100, and the first clamping member 210 is clamped with the closed cabinet door; the interlock slide bar 220 is slidably connected to the cabinet body 100, and the first end of the interlock slide bar 220 is connected to the first clamping member 210; wherein, the first end of the unlocking member 330 can push against the second end of the interlock slide bar 220 towards the cabinet door; the interlock elastic member 230 is connected to the interlock slide bar 220, and the interlock elastic member 230 makes the interlock slide bar 220 have a tendency to slide away from the cabinet door. In this embodiment, the first end of the unlocking member 330 pushes against the second end of the interlock slide bar 220 towards the cabinet door, so that when the interlock slide bar 220 slides towards the cabinet door, it drives the first clamping member 210 to rotate, and further makes the first clamping member 210 disengage from the cabinet door, which is stable and reliable. In addition, during the reset process of the unlocking member 330, the interlock slide bar 220 resets under the action of the interlock elastic member 230, so that the first clamping member 210 is suitable for being clamped with the cabinet door.

[0121] Exemplarily, the interlock elastic member 230 is provided as a spring.

[0122] Exemplarily, a second support frame 150 is provided on the cabinet body 100. The second support frame 150 has the same or similar structure as the first support frame 140, and the sliding connection mode between the second support frame 150 and the interlock slide bar 220 is the same or similar to the sliding connection mode between the first support frame 140 and the driven slide bar 320, which will not be elaborated in this embodiment. Of course, the interlock slide bar 220 can also be slidably connected to the cabinet body 100 through other structural members, such as sliding bearings, sliding sleeves, etc., which are not limited in this embodiment.

[0123] Exemplarily, at least one second support frame 150 is provided, such as two, and at least one second support frame 150 is connected with the interlock elastic member 230. Among them, the connection mode of the interlock elastic member 230 is the same or similar to the connection mode of the driven elastic member 370, which will not be elaborated in this embodiment.

[0124] Exemplarily, the first end of the first clamping member 210 is hook-shaped to be suitable for being clamped with the cabinet door.

[0125] In a feasible implementation manner, a connection column 221 is provided at the first end of the interlock slide bar 220, and a connection hole 211 is provided at the second end of the first clamping member 210. The connection column 221 passes through the connection hole 211. Exemplarily, the connection hole 211 can be a fan-shaped ring hole, and the connection column 221 is slidably connected to the connection hole 211. Of course, the connection hole 211 can also be a round hole or a hole of other shapes, which are not limited in this embodiment.

[0126] Exemplarily, the connection column 221 includes but is not limited to a screwed member or an elastic cylindrical pin.

[0127] In a feasible implementation, the end face of the second end of the interlocking slide bar 220 is larger than the end face of the first end of the unlocking member 330. It can be understood that when the driven slide bar 320 is in the first position, along the sliding direction of the unlocking member 330, the projection of the end face of the first end of the unlocking member 330 is located outside the end face of the second end of the interlocking slide bar 220, that is, the unlocking member 330 is misaligned with the interlocking slide bar 220; when the driven slide bar 320 is in the second position, along the sliding direction of the unlocking member 330, the projection of the end face of the first end of the unlocking member 330 is located inside the end face of the second end of the interlocking slide bar 220, that is, the unlocking member 330 is directly opposite to the interlocking slide bar 220. With relatively low position accuracy, when the three-position switch 110 is grounded, the cabinet door can be opened by closing the circuit breaker 120, which is easy to implement.

[0128] Exemplarily, the second end of the interlocking slide bar 220 is in a disc shape. Among them, a second through hole (not shown) for the second end of the interlocking slide bar 220 to pass through is provided on the cabinet body 100.

[0129] In this embodiment, referring to Figure 9 As shown, a second clamping member 160 is detachably connected to the cabinet door, and the cabinet door is clamped with the first interlocking assembly 200 through the second clamping member 160, which is stable and reliable. It is worth mentioning that when it is necessary to open the cabinet door in an emergency, the second clamping member 160 on the cabinet door can be removed outside the cabinet body 100, so that the second clamping member 160 is disengaged from the first interlocking assembly 200 to open the cabinet door, which is convenient for operation and effectively ensures the safety and stability of the switch cabinet during use.

[0130] Specifically, the first clamping member 210 is clamped with the second clamping member 160 to realize the clamping of the first interlocking assembly 200 with the closed cabinet door.

[0131] Exemplarily, the second clamping member 160 is provided with a clamping groove that can be clamped with the first end of the first clamping member 210.

[0132] In this embodiment, referring to Figures 1 to 7 、 Figure 10 As shown, a guide post 122 is provided on the second crank arm 121. The third interlocking assembly 400 includes a lever 410. The lever 410 is rotatably connected to the cabinet body 100. The first end of the lever 410 can push against the second end of the unlocking member 330 towards the first interlocking assembly 200. A first constraint hole 411 is provided at the second end of the lever 410. The guide post 122 passes through the first constraint hole 411 and is slidably connected to the first constraint hole 411. Of course, the second crank arm 121 can also be connected to the lever 410 through a connecting rod or other structural members, which is not limited in this embodiment.

[0133] In this embodiment, when the second toggle arm 121 rotates from the opening position to the closing position, it can slide within the first constraint hole 411 through the guide post 122 to drive the lever 410 to rotate, so that the first end of the lever 410 pushes against the second end of the unlocking member 330 towards the first interlocking assembly 200, which is stable and reliable. Moreover, the guide post 122 is slidably connected to the first constraint hole 411, effectively reducing the impact of the rapid rotation of the second toggle arm 121 on the lever 410 and the impact of the lever 410 on the unlocking member 330, greatly improving the reliability of the interlocking mechanism and extending the service life of the interlocking mechanism. In addition, when the second toggle arm 121 rotates from the closing position to the opening position, the second end of the lever 410 moves away from the unlocking member 330, so that the first engaging member 210 is adapted to be engaged with the second engaging member 160.

[0134] Exemplarily, the first constraint hole 411 may be a long hole.

[0135] Exemplarily, the guide post 122 includes but is not limited to a screwed member or an elastic cylindrical pin.

[0136] In a feasible implementation manner, the third interlocking assembly 400 further includes a first pushing strip 420 provided at the first end of the lever 410, and a second pushing strip 331 is provided at the second end of the unlocking member 330. The lever 410 pushes against the second pushing strip 331 through the first pushing strip 420, and the first pushing strip 420 and the second pushing strip 331 are arranged at an angle, effectively preventing the first pushing strip 420 from detaching from the second pushing strip 331 when the second toggle arm 121 rotates from the opening position to the closing position, which is stable and reliable.

[0137] Exemplarily, the first pushing strip 420 is parallel to the rotation direction of the lever 410, the second pushing strip 331 is perpendicular to the sliding direction of the unlocking member 330, and the first pushing strip 420 and the second pushing strip 331 are perpendicular to each other, which has a better effect of preventing the first pushing strip 420 from detaching from the second pushing strip 331 when the second toggle arm 121 rotates from the opening position to the closing position.

[0138] Exemplarily, the lever 410 and the first pushing strip 420 may be integrally formed or designed in a split manner, which is not limited in this embodiment.

[0139] Exemplarily, the unlocking member 330 and the second pushing strip 331 may be integrally formed or designed in a split manner, which is not limited in this embodiment.

[0140] In this embodiment, refer to Figures 1 to 4As shown, the circuit breaker 120 further includes a third toggle arm 123 and a trip device (not shown). The third toggle arm 123 rotates between a locked position and an unlocked position. In the locked position, the third toggle arm 123 can restrict the circuit breaker 120 from tripping through the trip device; in the unlocked position, the circuit breaker 120 can trip through the trip device. Among them, the cooperation relationship between the third toggle arm 123 and the trip device is a prior art, and will not be elaborated in this embodiment.

[0141] In this embodiment, referring to Figures 1 to 7 As shown, the interlock mechanism further includes a fourth interlock assembly 500, and the fourth interlock assembly 500 is connected to the third toggle arm 123. Among them, when the fourth interlock assembly 500 abuts against the closed cabinet door, the third toggle arm 123 can be kept in the unlocked position. At this time, the circuit breaker 120 can freely trip through the trip device; when the cabinet door is opened, the third toggle arm 123 can be driven by the fourth interlock assembly 500 to rotate from the unlocked position to the locked position. At this time, the circuit breaker 120 cannot trip through the trip device, realizing mechanical interlock, which is stable and reliable, effectively preventing misoperation, and having a long service life in harsh environments.

[0142] Specifically, the fourth interlock assembly 500 includes a first locking rod 510, a locking elastic member 520, a hinge member 530, and a second locking rod 540. Among them, the first end of the first locking rod 510 can abut against the closed cabinet door; the locking elastic member 520 makes the first locking rod 510 tend to move towards the cabinet door; the hinge member 530 is connected to the second end of the first locking rod 510; the first end of the second locking rod 540 is connected to the hinge member 530, and the second end of the second locking rod 540 is connected to the third toggle arm 123. Exemplarily, when the cabinet door is opened, the first locking rod 510 moves outwards from the cabinet body 100 under the action of the locking elastic member 520, and drives the hinge member 530 to rotate. The rotation of the hinge member 530 drives the second locking rod 540 to push against the third toggle arm 123, so that the third toggle arm 123 rotates from the unlocked position to the locked position, which is stable and reliable. Exemplarily, when the cabinet door is closed, the cabinet door presses the first end of the first locking rod 510 to drive the hinge member 530 to rotate in the reverse direction. The reverse rotation of the hinge member 530 drives the second locking rod 540 to pull the third toggle arm 123, so that the third toggle arm 123 rotates from the locked position to the unlocked position, which is stable and reliable.

[0143] Exemplarily, the hinge member 530 can be hinged to the cabinet body 100.

[0144] In a feasible implementation, a first plate 102 and a second plate 103 are spaced on the cabinet body 100. A first limiting hole is provided on the first plate 102, and a second limiting hole 1031 is provided on the second plate 103. The first end of the first locking rod 510 passes through the first limiting hole, and the second end of the first locking rod 510 passes through the second limiting hole 1031 and is fixedly connected to the hinge member 530, which is convenient for assembly. Among them, the first plate 102 is arranged on the side of the second plate 103 close to the cabinet door.

[0145] Exemplarily, the hinge member 530 is fixedly connected to the second end of the first locking rod 510. At least one of the first limiting hole and the second limiting hole 1031 is set as a long hole to guide the swing of the first locking rod 510, so that the first locking rod 510 can drive the hinge member 530 to rotate, which is stable and reliable. In some embodiments, the first limiting hole is set as a round hole, the second limiting hole 1031 is set as a long hole, and the diameter of the first limiting hole is greater than the diameter of the first locking rod 510.

[0146] Exemplarily, the first locking rod 510 can be connected to the hinge member 530 through a second screw set (not shown). Specifically, a connecting ear 531 is provided on the hinge member 530. The connecting ear 531 is clamped between two second screw sets, and the first locking rod 510 passes through the two second screw sets and the connecting ear 531. The first locking rod 510 is threadedly connected to the first screw set.

[0147] In a feasible implementation, a fifth limiting member 511 is provided on the rod portion of the first locking rod 510 between the first plate 102 and the second plate 103. The locking elastic member 520 is sleeved on the first locking rod 510, and the locking elastic member 520 is clamped between the second plate 103 and the fifth limiting member 511, which is convenient for assembly.

[0148] Exemplarily, the locking elastic member 520 is set as a spring.

[0149] Exemplarily, the fifth limiting member 511 includes but is not limited to a screwed member or an elastic cylindrical pin.

[0150] In a feasible implementation, a second constraint hole 532 is provided on the hinge member 530. A linkage column 541 is provided on the circumference of the first end of the second locking rod 540. The linkage column 541 passes through the second constraint hole 532 and is slidably connected to the second constraint hole 532. In this embodiment, when the hinge member 530 rotates, the linkage column 541 slides in the second constraint hole 532 and drives the second locking rod 540 to push or pull the third crank arm 123, effectively preventing the occurrence of jamming, which is stable and reliable.

[0151] Exemplarily, the second constraint hole 532 can be a long hole.

[0152] In a feasible implementation, the fourth interlock assembly 500 further includes two stoppers (not shown). The second end of the second locking rod 540 passes through the two stoppers and the third crank arm 123, and the third crank arm 123 is located between the two stoppers, facilitating the second locking rod 540 to drive the third crank arm 123 to rotate.

[0153] Exemplarily, the hole on the third crank arm 123 through which the second locking rod 540 can pass may be a long hole to prevent jamming.

[0154] Exemplarily, the stopper includes but is not limited to a screw kit or an elastic cylindrical pin.

[0155] In a feasible implementation, the interlock slide bar 220 and the first locking rod 510 are arranged at intervals along the height direction of the cabinet body 100, and the first locking rod 510 is located below the interlock slide bar 220. In some embodiments, the hinge member 530 may be a bent plate-like structure to make way for the unlocking member 330, with a compact structure.

[0156] Exemplarily, the cabinet body 100 is provided with a fourth long hole through which the hinge member 530 can pass to limit the rotation angle of the hinge member 530, which can reduce the impact on the third crank arm 123 and limit the moving distance of the first locking rod 510 in the front-back direction of the cabinet body 100.

[0157] In this embodiment, the interlock principle of the interlock mechanism is specifically as follows:

[0158] When the cabinet door of a normally operating switch cabinet needs to be opened, first, with the second crank arm 121 in the off position, the first crank arm 111 is rotated from the isolation position to the grounding position. The first crank arm 111 drives the driven slide bar 320 to slide from the first position to the second position, so that the unlocking member 330 is aligned with the interlock slide bar 220. Then, the second crank arm 121 is rotated to the on position. The second crank arm 121 slides in the first constraint hole 411 through the guide post 122 to drive the lever 410 to rotate, and then the first push bar 420 pushes the second push bar 331. The unlocking member 330 pushes the interlock slide bar 220 to slide, and the first engaging member 210 rotates and disengages from the second engaging member 160, realizing the opening of the cabinet door. When the cabinet door is opened, the first locking rod 510 moves outward toward the outside of the cabinet body 100 under the action of the locking elastic member 520, and drives the hinge member 530 to rotate. The rotation of the hinge member 530 drives the second locking rod 540 to push the third crank arm 123, so that the third crank arm 123 rotates from the unlocking position to the locking position, preventing the circuit breaker 120 from tripping through the release.

[0159] When it is necessary to close the cabinet door, first close the cabinet door. The cabinet door presses the first locking rod 510, and the hinge 530 rotates reversely. The second locking rod 540 pulls the third crank arm 123 to the unlocking position. Then, rotate the second crank arm 121 to the opening position. Under the action of the unlocking elastic member 350 and the locking elastic member 520, the unlocking member 330 and the interlocking slide rod 220 are reset, and the first engaging member 210 is engaged with the second engaging member 160. At this time, the first crank arm 111 can be rotated to the isolating position.

[0160] When it is necessary to open the cabinet door of the switch cabinet with abnormal operation, just detach the second engaging member 160 from the cabinet door, which is convenient for operation.

[0161] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An interlocking mechanism applied to a switch cabinet, the switch cabinet comprising a cabinet body (100), a cabinet door, and a three-position switch (110) and a circuit breaker (120) arranged in the cabinet body (100), characterized in that: The interlocking mechanism comprises a first interlocking assembly (200), a second interlocking assembly (300) and a third interlocking assembly (400); The second interlocking assembly (300) comprises a driven swing arm (310), a driven sliding rod (320) and an unlocking member (330); the driven swing arm (310) is connected to the first crank arm (111) of the three-position switch (110); and the unlocking member (330) is slidably disposed on the driven sliding rod (320); The third interlocking assembly (400) is connected to the second crank arm (121) of the circuit breaker (120); The first crank arm (111) is located in the isolation position, and the driven swing arm (310) is separated from or abutted against the driven slide bar (320); the driven swing arm (310) is provided with a convex arc portion (3101), and the second end of the driven slide bar (320) is provided with a force-bearing surface (321), and the driven swing arm (310) abuts against the force-bearing surface (321) through the convex arc portion (3101) to push the driven slide bar (320) to slide, and the first crank arm (111) rotates from the isolation position to the contact position, and the driven swing arm (310) drives the driven slide bar (320) to be pushed from the first position to the second position; The driven sliding rod (320) is at the first position, the unlocking member (330) is misaligned with the first interlocking assembly (200), and the first interlocking assembly (200) is clamped on the cabinet door; The driven slide bar (320) is in the second position, the unlocking member (330) is directly opposite to the first interlocking assembly (200), and the second crank arm (121) is rotated from the open position to the closed position so that the third interlocking assembly (400), the unlocking member (330) and the first interlocking assembly (200) are pushed in sequence, so that the first interlocking assembly (200) is disengaged from the cabinet door.

2. The interlocking mechanism according to claim 1, characterized in that: The first end of the driven sliding rod (320) is connected to a sliding frame (340), and the sliding frame (340) comprises two first side plates (341) arranged at an interval and a bottom plate (342) arranged between the two first side plates (341); Wherein, a first sliding hole is provided on the first side plate (341), and the unlocking member (330) slides through the first sliding hole.

3. The interlocking mechanism according to claim 2, characterized in that: The second interlocking assembly (300) further comprises an unlocking elastic member (350), wherein the unlocking elastic member (350) is arranged between the sliding frame (340) and the unlocking member (330), and the unlocking elastic member (350) causes the unlocking member (330) to have a tendency to move away from the first interlocking assembly (200).

4. The interlocking mechanism according to claim 1, characterized in that: The driven swing arm (310) comprises: Swing arm body (311); The driven frame (312) is fixed on the swing arm body (311), and a convex arc portion (3101) is provided on the driven frame (312).

5. The interlocking mechanism according to claim 4, characterized in that: The swing arm body (311) is provided with a slide groove, and the driven swing arm (310) further comprises: A positioning plate (313) is slidably disposed in the slide groove, and the positioning plate (313) is connected to the first crank arm (111); A fastener, through which the swing arm body (311) and the adjustment plate (313) are fastened and connected.

6. The interlocking mechanism according to claim 1, characterized in that: The second interlocking assembly (300) further comprises a telescopic rod (130) with adjustable length, the driven swing arm (310) being hinged to a first end of the telescopic rod (130), and the first crank arm (111) being hinged to a second end of the telescopic rod (130).

7. The interlocking mechanism according to claim 1, characterized in that: The driven sliding rod (320) is connected to a driven elastic member (370), and the driven elastic member (370) enables the driven sliding rod (320) to have a tendency to slide towards the first position.

8. The interlocking mechanism according to claim 1, characterized in that: The first interlocking assembly (200) comprises: A first clamping member (210) is rotatably connected to the cabinet body (100), and the first clamping member (210) is clamped to the closed cabinet door; An interlocking slide bar (220) is slidably connected to the cabinet body (100), and a first end of the interlocking slide bar (220) is connected to the first clamping member (210); wherein the first end of the unlocking member (330) can push the second end of the interlocking slide bar (220) toward the cabinet door; An interlocking elastic member (230) is connected to the interlocking sliding rod (220), and the interlocking elastic member (230) enables the interlocking sliding rod (220) to have a tendency to slide away from the cabinet door.

9. The interlocking mechanism according to claim 8, characterized in that: The second end surface of the interlocking sliding rod (220) is larger than the first end surface of the unlocking member (330).

10. The interlocking mechanism according to claim 1, characterized in that: The second crank arm (121) is provided with a guide column (122), the third interlocking assembly (400) comprises a lever (410), the lever (410) is rotatably connected to the cabinet (100), the first end of the lever (410) can push the second end of the unlocking member (330) toward the first interlocking assembly (200), the second end of the lever (410) is provided with a first restraining hole (411), and the guide column (122) is penetrated through the first restraining hole (411) and is slidably connected to the first restraining hole (411).

11. The interlocking mechanism according to claim 10, characterized in that: The third interlocking assembly (400) further comprises a first push bar (420) provided at a first end of the lever (410), a second push bar (331) being provided at a second end of the unlocking member (330), the lever (410) pushes the second push bar (331) via the first push bar (420), and the first push bar (420) and the second push bar (331) are arranged at an angle.

12. The interlocking mechanism according to any one of claims 1 to 11, characterized in that: The circuit breaker (120) further comprises a third crank arm (123) and a release, wherein the third crank arm (123) rotates to have a locking position and an unlocking position, wherein the third crank arm (123) can restrict the circuit breaker (120) from being opened by the release in the locking position; and the third crank arm (123) can enable the circuit breaker (120) to be opened by the release in the unlocking position; The interlocking mechanism further comprises a fourth interlocking assembly (500), wherein the fourth interlocking assembly (500) is connected to the third crank arm (123); Wherein, the fourth interlocking component (500) abuts against the closed cabinet door to keep the third crank arm (123) in the unlocking position; When the cabinet door is opened, the fourth interlocking assembly (500) can drive the third crank arm (123) to rotate from the unlocking position to the locking position.

13. The interlocking mechanism according to claim 12, characterized in that: The fourth interlocking assembly (500) comprises: A first locking rod (510), wherein a first end of the first locking rod (510) can abut against the closed cabinet door; a locking elastic member (520), wherein the locking elastic member (520) causes the first locking rod (510) to have a tendency to move toward the cabinet door; a hinge (530), the hinge (530) being connected to the second end of the first locking rod (510); A second locking rod (540), wherein a first end of the second locking rod (540) is connected to the hinge (530), and a second end of the second locking rod (540) is connected to the third crank arm (123).

14. The interlocking mechanism according to claim 13, characterized in that: A first plate (102) and a second plate (103) are provided on the cabinet body (100) at intervals, the first plate (102) is provided with a first limiting hole, the second plate (103) is provided with a second limiting hole (1031), the first end of the first locking rod (510) is passed through the first limiting hole, the second end of the first locking rod (510) is passed through the second limiting hole (1031) and is fixedly connected to the hinge (530).

15. The interlocking mechanism according to claim 13, characterized in that: The hinge (530) is provided with a second constraint hole (532), and a linkage column (541) is provided around the first end of the second locking rod (540), and the linkage column (541) is passed through the second constraint hole (532) and is slidably connected to the second constraint hole (532); And / or, the fourth interlocking assembly (500) further comprises two blocks, the second end of the second locking rod (540) passes through the two blocks and the third crank arm (123), and the third crank arm (123) is located between the two blocks.

16. A switch cabinet, characterized in that: include: Cabinet (100); A cabinet door, arranged on the cabinet body (100); A circuit breaker (120) is arranged in the cabinet (100); A three-position switch (110) is arranged in the cabinet (100); And an interlocking mechanism as claimed in any one of claims 1 to 15.

17. The switch cabinet according to claim 16, characterized in that: A second clamping member (160) is detachably connected to the cabinet door, and the cabinet door is clamped to the first interlocking assembly (200) via the second clamping member (160).

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