Interlocking mechanism and switch cabinet

Abstract

The invention discloses an interlocking mechanism and a switch cabinet, and belongs to the technical field of electrical switches, the interlocking mechanism comprises a first interlocking assembly, a second interlocking assembly and a third interlocking assembly, and the first interlocking assembly is clamped with a closed cabinet door; the second interlocking assembly comprises a driven swing arm, a driven sliding rod and an unlocking piece, the driven swing arm is connected with a first crank arm of the three-position switch, and the unlocking piece is arranged on the driven sliding rod in a sliding mode; and the third interlocking assembly is connected with a second crank arm of the circuit breaker. According to the interlocking mechanism provided by the invention, the first crank arm is rotated 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 piece directly faces the first interlocking assembly, the second crank arm is rotated from the opening position to the closing position, and the third interlocking assembly, the unlocking piece and the first interlocking assembly are sequentially pushed; the cabinet door opening device is stable and reliable, and the service life of the cabinet door opening device is long.

Description

Technical Field

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

[0002] The circuit breaker and three-position switch mechanism are the core components of the switch cabinet and are electrical equipment used to connect and disconnect the circuit. The circuit breaker has two states: closed and open; the three-position switch has three positions: connected, isolated and grounded.

[0003] During the operation of the switch cabinet, in order to prevent misoperation and ensure the personal safety of the operator, 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 is only opened when the three-position switch is grounded and the circuit breaker is closed. Grounding protection state.

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

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

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

[0007] Provided is an interlocking mechanism, applied to a switch cabinet, the switch cabinet comprising a cabinet body, a cabinet door, and a three-position switch and a circuit breaker arranged in the cabinet body, the interlocking mechanism comprising a first interlocking component, a second interlocking component and a third interlocking component;

[0008] The second interlocking assembly comprises a driven swing arm, a driven slide rod and an unlocking member, wherein the driven swing arm is connected to the first crank arm of the three-position switch, and the unlocking member is slidably disposed on the driven slide rod;

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

[0010] The first crank arm is located at the isolation position, and the driven swing arm is separated from or against the driven sliding rod;

[0011] The first crank arm rotates from the isolation position to the contact position, and the driven swing arm drives the driven slide bar to push from the first position to the second position;

[0012] The driven slide bar is at the first position, the unlocking member is misaligned with the first interlocking assembly, and the first interlocking assembly is clamped on the cabinet door;

[0013] The driven slide rod is in the second position, the unlocking member is opposite to the first interlocking assembly, and the second crank arm rotates from the open position to the closed position so that the third interlocking assembly, the unlocking member and the first interlocking assembly push each other in sequence, so that the first interlocking assembly disengages from the cabinet door.

[0014] Optionally, the first end of the driven sliding rod is connected to a sliding frame, and 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 slides through the first sliding hole.

[0016] Optionally, the second interlocking assembly further comprises an unlocking elastic member, wherein the unlocking elastic member is disposed between the sliding frame and the unlocking member, and the unlocking elastic member causes the unlocking member to have a tendency 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 slide rod is provided with a force-bearing surface, and the driven swing arm abuts against the force-bearing surface through the convex arc portion to push the driven slide rod to slide.

[0018] Optionally, the driven swing arm comprises:

[0019] Swing arm body;

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

[0021] Optionally, a slide groove is provided on the swing arm body, and the driven swing arm further comprises:

[0022] A positioning plate is slidably disposed in the slide groove, and the positioning plate is connected to the first crank arm;

[0023] A fastener, wherein the swing arm body and the adjustment plate are fastened and connected via the fastener.

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

[0025] Optionally, the driven sliding rod is connected to a driven elastic member, and the driven elastic member enables the driven sliding rod to have a tendency to slide toward the first position.

[0026] Optionally, the first interlocking assembly includes:

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

[0028] An interlocking slide bar is slidably connected to the cabinet body, and a first end of the interlocking slide bar is connected to the first clamping member; wherein the first end of the unlocking member can push the second end of the interlocking slide bar toward the cabinet door;

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

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

[0031] Optionally, a guide column is provided on the second crank arm, and the third interlocking assembly includes a lever, which is rotatably connected to the cabinet body, and the first end of the lever can push the second end of the unlocking member toward the first interlocking assembly, and the second end of the lever is provided with a first constraint hole, and the guide column is passed through the first constraint hole and is slidably connected to the first constraint hole.

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

[0033] Optionally, the circuit breaker further comprises a third crank arm and a release, the third crank arm rotates to have a locking position and an unlocking position, the third crank arm can restrict the circuit breaker from being opened by the release in the locking position; the third crank arm can enable the circuit breaker to be opened by the release in the unlocking position;

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

[0035] Wherein, the fourth interlocking component abuts against the closed cabinet door to keep the third crank arm 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, wherein a first end of the first locking rod can abut against the closed cabinet door;

[0039] a locking elastic member, wherein the locking elastic member causes the first locking rod to have a tendency to move toward the cabinet door;

[0040] a hinge connected to the second end of the first locking rod;

[0041] A second locking rod, wherein 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 crank arm.

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

[0043] Optionally, a second constraint hole is provided on the hinged member, a linkage column is provided around the first end of the second locking rod, and the linkage column is passed through the second constraint hole and is slidably connected to the second constraint hole;

[0044] And / or, the fourth interlocking assembly further includes two blocks, the second end of the second locking rod passes through the two blocks and the third crank arm, and the third crank arm is located between the two blocks.

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

[0046] Optionally, a second clamping member is detachably connected to the cabinet door, and the cabinet door is clamped to the first interlocking assembly via the second clamping member.

[0047] Beneficial effect: The interlocking mechanism provided by the present invention, when it is necessary to open the cabinet door, first, the first crank arm is rotated from the isolation position to the grounding position, so that the driven slide bar is pushed from the first position to the second position through the driven swing arm, so that the unlocking member is directly opposite to the first interlocking component; then, the second crank arm is rotated from the open position to the closed position, so that the third interlocking component pushes the unlocking member, and the unlocking member pushes the first interlocking component under the action of the third interlocking component, so that the first interlocking component is disengaged from the cabinet door and the cabinet door is opened. Through the mechanical interlocking method, when the three-position switch is grounded, 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 crank arm is in the isolation position, the driven swing arm is separated from the driven slide rod, so the first crank arm can be rotated from the isolation position to the engagement position with little effort, and the distance that the first crank arm pushes the driven slide rod to slide when it rotates from the isolation position to the engagement position is small, so that the sliding process of the driven slide rod is stable and the entire interlocking mechanism has a compact structure.

[0049] When the first crank arm is in the isolation position, the driven swing arm and the driven slide rod are against each other, and rotating the first crank arm from the isolation position to the engagement position can reduce the impact and wear between the driven swing arm and the driven slide rod, and the transmission between the driven swing arm and the driven slide rod is more reliable, which effectively prevents the driven swing arm from getting stuck in the process of pushing the driven slide rod.

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

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

[0052] Figure 2 is a structural schematic diagram of the interlocking mechanism provided by the present invention from another viewing angle;

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

[0054] Figure 4 This is a schematic structural diagram of a part of the switch cabinet provided by the present invention from another viewing angle;

[0055] Figure 5 It is a structural schematic diagram of a part of the structure of the switch cabinet provided by the present invention from another viewing angle;

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

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

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

[0059] Fig. 9 It is a structural schematic diagram of the interlocking mechanism provided by the present invention at the second clamping member;

[0060] Fig.10 It is a structural schematic diagram of the interlocking mechanism provided by the present invention at the second crank arm.

[0061] In the figure:

[0062] 100, cabinet; 101, guide member; 102, first plate; 103, second plate; 1031, second limit hole; 110, three-position switch; 111, first crank arm; 120, circuit breaker; 121, second crank arm; 122, guide column; 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 interlocking assembly; 210, first clamping member; 211, connecting hole; 220, interlocking slide bar; 221, connecting column; 230, interlocking elastic member;

[0064] 300, second interlocking assembly; 310, driven swing arm; 3101, convex arc portion; 311, swing arm body; 312, driven frame; 313, adjustment plate; 320, driven slide rod; 321, force surface; 322, first rod portion; 323, second rod portion; 330, unlocking member; 331, second push 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 interlocking assembly; 410, lever; 411, first restraining hole; 420, first push bar;

[0066] 500, fourth interlocking assembly; 510, first locking rod; 511, fifth limiting member; 520, locking elastic member; 530, hinged member; 531, connecting ear; 532, second restraining hole; 540, second locking rod; 541, linkage column. DETAILED DESCRIPTION

[0067] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0068] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0070] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0071] Reference 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 arranged in the cabinet body 100. The first crank arm 111 of the three-position switch 110 rotates to have a contact position and an isolation position, and the second crank arm 121 of the circuit breaker 120 rotates to have an open position and a closed position. The cabinet door is arranged on the cabinet body 100. It can be understood that the switch cabinet also 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; wherein the second interlocking component 300 includes a driven swing arm 310, a driven slide 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 arranged on the driven slide 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 isolation position, the driven swing arm 310 is separated from or abuts against the driven slide bar 320; and the first crank arm 111 rotates from the isolation position to the engagement position, and the driven swing arm 310 drives the driven slide bar 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 engagement position, the driven swing arm 310 abuts against the driven slide bar 320.

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

[0076] Exemplarily, when the first crank arm 111 is in the isolation position, the driven swing arm 310 abuts against the driven slide bar 320. In this embodiment, rotating the first crank arm 111 from the isolation position to the engagement position can reduce the impact and wear between the driven swing arm 310 and the driven slide bar 320, and the transmission between the driven swing arm 310 and the driven slide bar 320 is more reliable, effectively preventing the driven swing arm 310 from getting stuck in the process of pushing the driven slide bar 320.

[0077] In this embodiment, when the driven slide bar 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. It is understandable 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 opposite to the first interlocking assembly 200, and the second crank arm 121 rotates 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.

[0079] When the cabinet door needs to be opened, first, the first crank arm 111 is rotated from the isolation position to the grounding position, so that the driven slide bar 320 is pushed from the first position to the second position through the driven swing arm 310, so that the unlocking member 330 is directly opposite to the first interlocking assembly 200; then, the second crank arm 121 is rotated 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, so that the first interlocking assembly 200 is disengaged from the cabinet door, and the cabinet door is opened. Through the mechanical interlocking method, 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 harsh environments. It can be understood that in other states of the three-position switch 110, the interlocking mechanism cannot open the cabinet door when the circuit breaker 120 is closed or opened, which is safe and reliable.

[0080] In this embodiment, the switch cabinet is provided with an interlocking mechanism. When the three-position switch 110 is grounded, the cabinet door can be opened by closing the circuit breaker 120. This is stable and reliable, effectively prevents misoperation, and has a long service life.

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

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

[0083] In this embodiment, the sliding direction of the driven slide bar 320 and the sliding direction of the unlocking member 330 are set at an angle. For example, the angle between the sliding direction of the driven slide bar 320 and the sliding direction of the unlocking member 330 is in the range of 75°-105°, which can make the structure of the interlocking mechanism more compact. Preferably, the sliding direction of the driven slide bar 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, the component force of the unlocking member 330 on the driven slide bar 320 along the sliding direction of the driven slide bar 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 may be the height direction of the cabinet 100 , and the sliding direction of the unlocking member 330 may be the front-rear direction of the cabinet 100 .

[0085] In this embodiment, refer to Figures 1 to 7 As shown, the first end of the driven slide bar 320 is connected to a sliding frame 340, and the sliding frame 340 includes two first side plates 341 arranged at intervals and a bottom plate 342 arranged between the two first side plates 341. The first side plates 341 are provided with a first sliding hole (not shown), and the unlocking member 330 slides 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 slides 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 may be provided as a rod-shaped structure.

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

[0088] Exemplarily, at least one guide hole 3421 , for example, two guide holes 3421 are provided on the bottom plate 342 .

[0089] Exemplarily, the guide hole 3421 may be an elongated hole.

[0090] In a feasible embodiment, the sliding frame 340 further includes a second side plate 343 disposed between the two first side plates 341, and the second side plate 343 is connected to the first end of the driven sliding rod 320. The two first side plates 341 and the second side plate 343 may be connected as one body to improve the structural strength of the sliding frame 340. Exemplarily, the driven sliding rod 320 may be connected to the second side plate 343 via a first screw set (not shown), specifically, the second side plate 343 is sandwiched between the two first screw sets, and the driven sliding rod 320 is passed 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 100 may be provided with a first through hole (not shown) for the driven slide bar 320 to pass through. In this embodiment, the first through hole and the driven slide bar 320 may be clearance-fitted or sliding-fitted, which is not limited in this embodiment.

[0092] In this embodiment, continue to refer to Figures 1 to 7 As shown, the second interlocking assembly 300 also includes an unlocking elastic member 350, which is arranged between the sliding frame 340 and the unlocking member 330. The unlocking elastic member 350 makes the unlocking member 330 tend to move away from the first interlocking assembly 200. When the third interlocking assembly 400 is disengaged 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 interlocking assembly 200, so that the first interlocking assembly 200 can be engaged with the closed cabinet door to facilitate the closing of the cabinet door.

[0093] Specifically, the unlocking member 330 is provided with a first limiting member 361 on the portion 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 interlocking assembly 200.

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

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

[0096] Specifically, the unlocking member 330 is also provided with a second limiting member 362 on the portion between the two first side plates 341. The second limiting member 362 is provided on the side of the first limiting member 361 away from the unlocking elastic member 350. The second limiting member 362 can be offset against one of the two first side plates 341 away from the first interlocking assembly 200 to limit the unlocking member 330 and prevent the unlocking member 330 from detaching from the sliding frame 340, which is stable and reliable.

[0097] Exemplarily, the second limiting member 362 includes but is not limited to a threaded 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, refer to Figures 1 to 4 , Figure 8 As shown, the driven swing arm 310 is provided with a convex arc portion 3101, and the second end of the driven slide rod 320 is provided with a force surface 321. The driven swing arm 310 is abutted against the force surface 321 through the convex arc portion 3101 to push the driven slide rod 320 to slide, thereby effectively preventing transmission jam between the driven swing arm 310 and the driven slide rod 320, and can more effortlessly rotate the first crank arm 111 from the isolation position to the contact position, thereby effectively increasing the speed of rotating the first crank arm 111.

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

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

[0102] Specifically, a slide groove is provided on the swing arm body 311, and the driven swing arm 310 further includes a positioning plate 313 and a fastener (not shown). The positioning plate 313 is slidably arranged in the slide groove, and the swing arm body 311 and the positioning plate 313 are fastened and connected by fasteners, which is convenient for assembly. The positioning plate 313 is connected to the first crank arm 111. In this embodiment, the length of the driven swing arm 310 is adjusted by adjusting the position between the positioning plate 313 and the swing arm body 311, so as to further ensure the accuracy of the driven slide rod 320 being pushed to the second position by the driven swing arm 310.

[0103] Exemplarily, both sides of the swing arm body 311 are provided with sliding grooves, and the adjustment plates 313 are slidably arranged in the two sliding grooves respectively.

[0104] Exemplarily, the hole in the swing arm body 311 through which the fastener passes may be a round hole, and the hole in the adjustment plate 313 through which the fastener passes may be a waist-shaped 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 interlocking 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, so that the transmission is stable and reliable. In this embodiment, by adjusting the length of the telescopic rod 130, the accuracy of the driven sliding rod 320 being pushed to the second position by the driven swing arm 310 can be ensured. Specifically, the adjustment 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 bar 320 is connected to a driven elastic member 370, and the driven elastic member 370 makes the driven slide bar 320 have a tendency to slide toward the first position. When the first crank arm 111 rotates from the engagement position to the isolation position, under the action of the driven elastic member 370, the driven slide bar 320 is reset from the second position to the first position, which is stable and reliable. In addition, by setting the driven elastic member 370, the impact between the driven slide bar 320 and the first crank arm 111 can be effectively reduced. Of course, the reset of the driven slide bar 320 can also be achieved by other means, such as adding a counterweight or a magnetic structure that can reset the driven slide bar 320, which is not limited in this embodiment.

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

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

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

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

[0112] Specifically, the first support frame 140 may be a U-shaped structure, including two end plates 141 disposed opposite to each other. The third stopper 381 is disposed in one-to-one correspondence with the driven elastic member 370. In some embodiments, a third stopper 381 is disposed on the driven slide bar 320, and the driven elastic member 370 is disposed between the third stopper 381 and one of the end plates 141. In other embodiments, two third stoppers 381 are disposed on the driven slide bar 320, and the driven elastic member 370 is disposed between the corresponding third stopper 381 and the end plate 141.

[0113] Specifically, a fourth limiting member 382 is provided on the driven sliding rod 320 , and the driven sliding rod 320 abuts against one of the end plates 141 via 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 threaded member or an elastic cylindrical pin.

[0115] Exemplarily, the fourth position-limiting member 382 is disposed in one-to-one correspondence with the first support frame 140. The fourth position-limiting member 382 may be one of the third position-limiting members 381, that is, the two are the same component.

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

[0117] In a feasible embodiment, two first support frames 140 are provided on the cabinet 100, and the two first support frames 140 are staggered along the sliding direction of the driven slide bar 320, and the driven slide bar 320 includes two parallel first rod portions 322 and second rod portions 323, 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 slide bar 320 from rotating, that is, to prevent the unlocking member 330 from deviating from the first interlocking assembly 200 and the third interlocking 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 interlocking assembly 200 includes at least one driven sliding rod 320 .

[0119] Exemplarily, the first rod portion 322 and the second rod portion 323 may be connected via 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 may be integrally formed or may be split, which is not limited in this embodiment.

[0120] In this embodiment, refer to Figures 1 to 6 , Fig. 9As shown, the first interlocking assembly 200 includes a first clamping member 210, an interlocking slide bar 220 and an interlocking elastic member 230. 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 interlocking slide bar 220 is slidably connected to the cabinet body 100, and the first end of the interlocking slide bar 220 is connected to the first clamping member 210; the first end of the unlocking member 330 can push the second end of the interlocking slide bar 220 toward the cabinet door; the interlocking elastic member 230 is connected to the interlocking slide bar 220, and the interlocking elastic member 230 makes the interlocking 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 the second end of the interlocking slide bar 220 toward the cabinet door, so that the interlocking slide bar 220 drives the first clamping member 210 to rotate during the sliding process toward the cabinet door, thereby making the first clamping member 210 detach from the cabinet door, which is stable and reliable. In addition, during the reset process of the unlocking member 330 , the interlocking slide bar 220 is reset under the action of the interlocking elastic member 230 , so that the first clamping member 210 is suitable for clamping with the cabinet door.

[0121] Exemplarily, the interlocking elastic member 230 is configured as a spring.

[0122] For example, the cabinet 100 is provided with a second support frame 150, and the second support frame 150 has the same or similar structure as the first support frame 140, and the sliding connection between the second support frame 150 and the interlocking slide bar 220 is the same or similar to the sliding connection between the first support frame 140 and the driven slide bar 320, which will not be described in detail in this embodiment. Of course, the interlocking slide bar 220 can also be slidably connected to the cabinet 100 through other structural parts, such as sliding bearings, sliding sleeves, etc., which are not limited in this embodiment.

[0123] Exemplarily, at least one, for example two, second support frame 150 is provided, and at least one second support frame 150 is connected to an interlocking elastic member 230. The connection method of the interlocking elastic member 230 is the same or similar to the connection method of the driven elastic member 370, and this embodiment will not be described in detail.

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

[0125] In a feasible implementation, a connecting column 221 is provided at the first end of the interlocking slide bar 220, a connecting hole 211 is provided at the second end of the first clamping member 210, and the connecting column 221 is passed through the connecting hole 211. Exemplarily, the connecting hole 211 may be a fan ring hole, and the connecting column 221 is slidably connected to the connecting hole 211. Of course, the connecting hole 211 may also be a circular hole or a hole of other shapes, which is not limited in this embodiment.

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

[0127] In a feasible embodiment, the second end surface of the interlocking slide bar 220 is larger than the first end surface of the unlocking member 330. It can be understood that when the driven slide bar 320 is located at the first position, along the sliding direction of the unlocking member 330, the projection of the first end surface of the unlocking member 330 is located outside the second end surface 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 located at the second position, along the sliding direction of the unlocking member 330, the projection of the first end surface of the unlocking member 330 is located inside the second end surface of the interlocking slide bar 220, that is, the unlocking member 330 is directly opposite to the interlocking slide bar 220, and the unlocking member 330 and the interlocking slide bar 220 can realize that when the three-position switch 110 is grounded, the cabinet door can be opened by closing the circuit breaker 120, which is easy to realize.

[0128] Exemplarily, the second end of the interlocking slide bar 220 is in a disc shape. The cabinet 100 is provided with a second through hole (not shown) through which the second end of the interlocking slide bar 220 can pass.

[0129] In this embodiment, refer to Fig. 9 As shown, the cabinet door is detachably connected with a second clamping member 160, 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 the cabinet door needs to be opened in an emergency, the second clamping member 160 on the cabinet door can be removed outside the cabinet body 100, and then the second clamping member 160 and the first interlocking assembly 200 are disconnected 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 achieve 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 which can be clamped with the first end of the first clamping member 210 .

[0132] In this embodiment, refer to Figures 1 to 7 , Fig.10 As shown, the second crank arm 121 is provided with a guide column 122, the third interlocking assembly 400 includes 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 constraint hole 411, the guide column 122 is penetrated 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 crank arm 121 rotates from the open position to the closed position, the guide column 122 can slide in the first constraint hole 411 to drive the lever 410 to rotate, so that the first end of the lever 410 pushes the second end of the unlocking member 330 toward the first interlocking assembly 200, which is stable and reliable. The guide column 122 is slidably connected to the first constraint hole 411, which effectively reduces the impact of the second crank arm 121 on the lever 410 during the rapid rotation process, 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 crank arm 121 rotates from the closed position to the open position, the second end of the lever 410 is away from the unlocking member 330, so that the first clamping member 210 is suitable for clamping with the second clamping member 160.

[0134] Exemplarily, the first constraining hole 411 may be an elongated hole.

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

[0136] In a feasible embodiment, the third interlocking assembly 400 also includes a first push bar 420 provided at the first end of the lever 410, and a second push bar 331 is provided at the second end of the unlocking member 330. The lever 410 pushes the second push bar 331 through the first push bar 420, and the first push bar 420 and the second push bar 331 are arranged at an angle, which effectively prevents the first push bar 420 from detaching from the second push bar 331 when the second crank arm 121 rotates from the open position to the closed position, and is stable and reliable.

[0137] Exemplarily, the first push bar 420 is parallel to the rotation direction of the lever 410, the second push bar 331 is perpendicular to the sliding direction of the unlocking member 330, and the first push bar 420 and the second push bar 331 are perpendicular to each other, which better prevents the first push bar 420 from detaching from the second push bar 331 when the second crank arm 121 rotates from the open position to the closed position.

[0138] For example, the lever 410 and the first push bar 420 may be integrally formed or may be designed as separate parts, which is not limited in this embodiment.

[0139] Exemplarily, the unlocking member 330 and the second push strip 331 may be integrally formed or may be designed as separate parts, 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 crank arm 123 and a release (not shown), and the third crank arm 123 rotates to have a locking position and an unlocking position. The third crank arm 123 can limit the circuit breaker 120 from opening by the release in the locking position; the third crank arm 123 can enable the circuit breaker 120 to open by the release in the unlocking position. Among them, the matching relationship between the third crank arm 123 and the release is the prior art, and this embodiment will not be repeated in detail.

[0141] In this embodiment, refer to Figures 1 to 7 As shown, the interlocking mechanism further includes a fourth interlocking assembly 500, which is connected to the third crank arm 123. The fourth interlocking assembly 500 and the closed cabinet door can make the third crank arm 123 remain in the unlocked position, at which time, the circuit breaker 120 can be opened freely by the release; when the cabinet door is opened, the third crank arm 123 can be driven from the unlocked position to the locked position by the fourth interlocking assembly 500, at which time, the circuit breaker 120 cannot be opened by the release, thus realizing mechanical interlocking, which is stable and reliable, effectively prevents misoperation, and has a long service life in harsh environments.

[0142] Specifically, the fourth interlocking assembly 500 includes a first locking rod 510, a locking elastic member 520, a hinge 530, and a second locking rod 540. 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 have a tendency to move toward the cabinet door; the hinge 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 530, and the second end of the second locking rod 540 is connected to the third turning arm 123. Exemplarily, when the cabinet door is opened, the first locking rod 510 moves toward the outside of the cabinet body 100 under the action of the locking elastic member 520, and drives the hinge 530 to rotate, and the rotation of the hinge 530 drives the second locking rod 540 to push the third turning arm 123, so that the third turning arm 123 rotates from the unlocking position to the locking position, which is stable and reliable. Illustratively, when the cabinet door is closed, the cabinet door squeezes the first end of the first locking rod 510 to drive the hinge 530 to rotate in the opposite direction. The hinge 530 rotates in the opposite direction to drive the second locking rod 540 to pull the third crank arm 123, so that the third crank arm 123 rotates from the locked position to the unlocked position, which is stable and reliable.

[0143] Exemplarily, the hinge 530 may be hinged to the cabinet 100 .

[0144] In a feasible implementation, the cabinet body 100 is provided with a first plate 102 and a second plate 103 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, which is convenient for assembly. The first plate 102 is provided on the side of the second plate 103 close to the cabinet door.

[0145] Exemplarily, the hinge 530 is fixedly connected to the second end of the first locking rod 510, and at least one of the first limiting hole and the second limiting hole 1031 is set as an elongated hole to guide the swing of the first locking rod 510, so that the first locking rod 510 can drive the hinge 530 to rotate stably and reliably. In some embodiments, the first limiting hole is set as a round hole, the second limiting hole 1031 is set as an elongated 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 530 through a second screw set (not shown). Specifically, a connecting ear 531 is provided on the hinge 530, and the connecting ear 531 is clamped between two second screw sets. The first locking rod 510 is passed through the two second screw sets and the connecting ear 531, and the first locking rod 510 is threadedly connected to the first screw set.

[0147] In a feasible embodiment, the first locking rod 510 is provided with a fifth limiting member 511 on the rod portion 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 for easy assembly.

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

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

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

[0151] Exemplarily, the second constraining hole 532 may be an elongated hole.

[0152] In a feasible embodiment, the fourth interlocking assembly 500 also includes two blocks (not shown), the second end of the second locking rod 540 is passed through the two blocks and the third crank arm 123, and the third crank arm 123 is located between the two blocks, so that the second locking rod 540 can 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 can be a long hole to prevent jamming.

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

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

[0156] Exemplarily, the cabinet 100 is provided with a fourth long hole for the hinge 530 to pass through, so as to limit the rotation angle of the hinge 530, reduce the impact on the third crank arm 123, and limit the distance that the first locking rod 510 moves along the front and rear direction of the cabinet 100.

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

[0158] When it is necessary to open the door of a normally operating switch cabinet, first, when the second crank arm 121 is in the open position, the first crank arm 111 is rotated from the isolation position to the engagement position, and 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 opposite to the interlocking slide bar 220; then, the second crank arm 121 is rotated to the closed position, and the second crank arm 121 slides in the first constraint hole 411 through the guide column 122 to drive the lever 410 to rotate, thereby causing the first push bar 420 to push the second push bar 331, and the unlocking member 330 pushes the interlocking slide bar 220 to slide, and the first clamping member 210 rotates and disengages from the second clamping member 160, thereby realizing the opening of the cabinet door. When the cabinet door is opened, the first locking rod 510 moves toward the outside of the cabinet 100 under the action of the locking elastic member 520, and drives the hinge 530 to rotate. The rotation of the hinge 530 drives the second locking rod 540 to push the third turning arm 123, so that the third turning arm 123 rotates from the unlocking position to the locking position, so that the circuit breaker 120 cannot be opened by the release.

[0159] When the cabinet door needs to be closed, the cabinet door is first closed, the cabinet door squeezes the first locking rod 510, the hinge 530 rotates in the opposite direction, and the second locking rod 540 pulls the third crank arm 123 to the unlocking position; then, the second crank arm 121 is rotated to the opening position, and under the action of the unlocking elastic member 350 and the locking elastic member 520, the unlocking member 330 and the interlocking slide bar 220 are reset, and the first clamping member 210 is clamped with the second clamping member 160. At this time, the first crank arm 111 can be rotated to the isolation position.

[0160] When the cabinet door of the switch cabinet that is operating abnormally needs to be opened, the second clamping member 160 can be detached 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, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should 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 abuts against the driven slide bar (320); 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) is provided with a convex arc portion (3101), and the second end of the driven slide rod (320) is provided with a force-bearing surface (321). The driven swing arm (310) abuts against the force-bearing surface (321) via the convex arc portion (3101) to push the driven slide rod (320) to slide.

5. The interlocking mechanism according to claim 4, 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).

6. The interlocking mechanism according to claim 5, 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.

7. 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).

8. 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.

9. 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.

10. The interlocking mechanism according to claim 9, 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).

11. 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).

12. The interlocking mechanism according to claim 11, 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.

13. The interlocking mechanism according to any one of claims 1 to 12, 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.

14. The interlocking mechanism according to claim 13, 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).

15. The interlocking mechanism according to claim 14, 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).

16. The interlocking mechanism according to claim 14, 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.

17. 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 16.

18. The switch cabinet according to claim 17, 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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