Operating mechanism and switchgear
By incorporating a contact assembly, a latching assembly, and an anti-falling assembly into the operating mechanism of the switchgear, the short-circuit problem during the breaking of the moving and stationary contacts is solved, thereby improving the switchgear's stable conduction and breaking current-limiting capabilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI ELECTRICAL APPLIANCES RES INSTGROUP
- Filing Date
- 2026-04-15
- Publication Date
- 2026-06-09
AI Technical Summary
In switching devices, the short-circuit current generated when the moving and stationary contacts break leads to an electric repulsion force, causing the contact surface to weld together, resulting in short-circuit failure of the switching device and affecting its breaking and current-limiting capabilities.
An operating mechanism is designed, including a contact assembly, a latching assembly, and an anti-falling assembly. By setting first and second mating structures between the moving contact assembly and the latching assembly, a coupling connection is achieved under short-circuit current, preventing the moving contact from falling back and improving the breaking current limiting capability.
It effectively avoids short-circuit failure of switching devices, improves breaking and current limiting capabilities, simplifies the structure, and reduces the difficulty of overall layout.
Smart Images
Figure CN122177699A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of electrical equipment technology, and in particular relates to an operating mechanism and a switching device. Background Technology
[0002] When a switching device is closed, the moving contact and the stationary contact come into contact, and the current flows through the contact point between them to achieve the overall conduction effect of the switching device, thus playing the role of a switch in the circuit.
[0003] During high-current interruption, the large short-circuit current in the circuit causes the moving contact to experience electrodynamic repulsion, briefly separating it from the stationary contact. Simultaneously, this separation generates an electric arc that melts the contact surface. Once the short-circuit current decreases, the moving contact returns to contact the stationary contact again. At this point, the liquid metal on the surfaces of the two contacts fuses together under the gradually decreasing temperature and contact pressure, preventing them from separating again. This causes the switching device to fail due to a short circuit and affects its breaking and current-limiting capabilities. Summary of the Invention
[0004] This application provides an operating mechanism and a switching device that can prevent short-circuit failure of the switching device and improve the breaking and current limiting capability of the switching device.
[0005] This application provides an operating mechanism, comprising a contact assembly including a moving contact assembly and a stationary contact capable of contacting and engaging; a locking assembly including a first locking member and a second locking member capable of locking and engaging; and an anti-falling assembly including a first engaging structure and a second engaging structure capable of coupling and engaging, one of the first engaging structure and the second engaging structure being disposed on the moving contact assembly, and the other being disposed on the first locking member; wherein the operating mechanism has a closed state and a repulsive tripping state, during the transition from the closed state to the repulsive tripping state, the moving contact assembly moves away from the stationary contact and drives one of the first engaging structure and the second engaging structure to move towards the other for coupling connection, thereby driving the first locking member to disengage from the locking engagement with the second locking member.
[0006] The operating mechanism described above includes a moving contact assembly comprising a moving contact and a contact support. The moving contact is fixedly mounted on the contact support, and the first locking member is rotatably mounted on the contact support.
[0007] The operating mechanism described above includes a first locking member having a first locking part and a second locking member having a second locking part. The second locking part and the first locking part are positioned opposite each other, and the second locking part and the first locking part have a stepped structure that matches each other in shape.
[0008] The operating mechanism described above includes a first locking part and a contact support part having a snap-fit surface facing the first locking part. The first locking part has a stepped structure, and the second locking part has a rod-shaped structure. In the closed state, a snap-fit space is formed between the first locking part and the snap-fit surface. The second locking part passes through the snap-fit space and abuts against and cooperates with both the first locking part and the snap-fit surface.
[0009] In the above-described operating mechanism, the first locking member and the contact support member are stacked together along the first direction, the first mating structure is provided on the first locking member and protrudes along the first direction, the second mating structure is provided on the side of the contact support member facing the first mating structure, and the first mating structure and the second mating structure are at least partially overlapping in the first direction.
[0010] The operating mechanism described above includes a first locking member that further includes a release part and a movable mating part connected to each other. The release part has a release mating surface facing away from the movable mating part. The first locking part is connected to the release part and is spaced apart from the release mating surface. The side of the movable mating part facing away from the release part is arc-shaped, and the first mating structure is connected to the arc-shaped surface.
[0011] In the above-described operating mechanism, the first locking member and the contact support member are stacked together along the first direction, the first mating structure is provided on the first locking member and protrudes in the direction away from the contact support member, the second mating structure is provided on the moving contact and is positioned opposite to the first mating structure, and the first mating structure and the second mating structure are at least partially overlapping in the first direction.
[0012] The operating mechanism described above includes a first locking member, a first main body, a first mating structure and a first locking member disposed at intervals on the first main body, a first mating hole formed by the first mating structure and the first main body, and a second mating structure disposed within the first mating hole.
[0013] In the above-described operating mechanism, the first mating structure and the first locking part are respectively located at the bottom and top of the first locking member, the second mating structure is located on the contact support member to correspond and mate with the first mating structure, and the snap-fit surface is located on the top of the contact support member to correspond and mate with the first locking part.
[0014] The operating mechanism described above includes a first locking member and a second main body. The first mating structure includes a first connecting rod and a first mating rod. The first connecting rod extends along the direction from the second main body to the moving contact, and both ends of the first connecting rod are connected to the second main body and the first mating rod, respectively. The first mating rod extends along a first direction to form a first mating space with the second main body and the first connecting rod. The second mating structure of the contact support member passes through the first mating space.
[0015] In the above operating mechanism, the first mating structure and the first locking part are respectively located at the bottom and top of the first locking member, and the second mating structure and the snap-fit surface are respectively located at the bottom and top of the contact support member, so as to correspond and mate with the first mating structure and the first locking part respectively.
[0016] The operating mechanism described above includes a second connecting rod and a second mating rod. The second connecting rod extends along the direction from the contact support to the first locking member, and both ends of the second connecting rod are connected to the contact support and the second mating rod, respectively. The second mating rod extends along the first direction to form a second mating space with the second connecting rod and the contact support. The first mating structure of the first locking member passes through the second mating space.
[0017] In the above operating mechanism, when the circuit is closed, there is a preset gap D between the first cooperating structure and the second cooperating structure. The preset gap D has a range of 0.1mm≤D≤1mm.
[0018] On the other hand, this application embodiment also provides a switching device, which includes the above-mentioned operating mechanism. The switching device also includes a handle mechanism, which is movably connected to the locking assembly and drives the moving contact assembly through the locking assembly; an arc extinguishing assembly, which is disposed on one side of the operating mechanism in the second direction; and an overcurrent protection assembly, which is disposed on at least one side of the operating mechanism in the third direction and movably cooperates with the operating mechanism, for driving the moving contact assembly to separate from the stationary contact in the overcurrent state of the switching device.
[0019] The operating mechanism of this application embodiment is provided in the switchgear. The operating mechanism includes a contact assembly, a latching assembly and an anti-falling assembly. The latching structure of the latching assembly can fix the contact assembly, thereby keeping the contact assembly in a stable state. The anti-falling assembly is provided between the contact assembly and the latching assembly, thereby enabling the contact assembly and the latching assembly to be linked together.
[0020] The operating mechanism has a closed state and a repulsive tripping state. In the closed state, the moving contact assembly of the contact assembly is in contact with the stationary contact, and the first and second locking parts of the locking assembly are in a locked state, so that the moving contact assembly and the stationary contact are in a stable contact state. At this time, the switch can stably conduct current.
[0021] During the transition from the closed state to the repulsive tripping state, a short-circuit current is generated between the contact assemblies. At this time, the moving contact assembly is subjected to an electric repulsive force and is briefly repelled from the stationary contact. To prevent the moving contact assembly from falling back, in this embodiment, one of the first and second mating structures is disposed on the moving contact assembly, and the other is disposed on the first locking member. When the moving contact assembly moves, the first and second mating structures move relative to each other and achieve coupling connection, thereby driving the first locking member to move. This causes the first locking member to disengage from the second locking member, and the moving contact assembly is no longer subjected to the locking force applied by the locking assembly that causes it to fall back towards the stationary contact, thus avoiding short-circuit failure of the switchgear and improving the overall breaking and current limiting capability of the switchgear. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of the switching device according to an embodiment of this application; Figure 2 This is a schematic diagram of the operating mechanism in the closed state according to the first embodiment of this application; Figure 3 This is a schematic diagram of the operating mechanism of the first embodiment of this application in the repulsion and tripping state; Figure 4 This is a schematic diagram of the operating mechanism in the open state according to the first embodiment of this application; Figure 5 This is a schematic diagram showing the locking assembly of the operating mechanism in the locking state according to the first embodiment of this application; Figure 6 This is a schematic diagram of the anti-fall component of the operating mechanism according to the first embodiment of this application; Figure 7 This is a schematic diagram of the first locking element of the operating mechanism according to the first embodiment of this application; Figure 8 This is a schematic diagram of the operating mechanism in the closed state according to the second embodiment of this application; Figure 9 This is a schematic diagram of the operating mechanism in the disengaged state according to the second embodiment of this application; Figure 10 This is a schematic diagram of the operating mechanism in the open state according to the second embodiment of this application; Figure 11 This is a schematic diagram showing the cooperation between the first locking member and the moving contact of the operating mechanism in the second embodiment of this application; Figure 12 This is a schematic diagram of the structure of the first locking member of the operating mechanism in the second embodiment of this application; Figure 13 This is a schematic diagram illustrating the engagement of the locking components of the operating mechanism in the third and fourth embodiments of this application; Figure 14 This is a schematic diagram of the operating mechanism in the closed state according to the third embodiment of this application; Figure 15 This is a schematic diagram of the operating mechanism in the open state according to the third embodiment of this application; Figure 16 This is a schematic diagram illustrating the engagement of the anti-fall component of the operating mechanism according to the third embodiment of this application; Figure 17 This is a schematic diagram of the structure of the first locking element of the operating mechanism in the third embodiment of this application; Figure 18 This is a schematic diagram of the contact support member of the operating mechanism according to the third embodiment of this application; Figure 19 This is a schematic diagram of the operating mechanism in the closed state according to the fourth embodiment of this application; Figure 20 This is a schematic diagram of the operating mechanism in the open state according to the fourth embodiment of this application; Figure 21 This is a schematic diagram of the specific structure of the operating mechanism according to the fourth embodiment of this application; Figure 22 This is a schematic diagram of the contact support member of the operating mechanism according to the fourth embodiment of this application.
[0024] Explanation of icon numbers: 1. Contact assembly; 2. Moving contact assembly; 21. Moving contact; 22. Contact support; 221. Snap-fit surface; 222. First support part; 223. Second support part; 3. Stationary contact; 4. Locking assembly; 41. First locking element; 41a. First mating hole; 411. First locking part; 412. Release part; 4121. Release mating surface; 413. Movable mating part; 414. First main body part; 415. Second main body part; 42. Second locking element; 421. Second locking part; 5. Anti-fall component; 51. First mating structure; 51a. First mating space; 511. First connecting rod; 512. First mating rod; 513. Mating connection part; 514. Abutting part; 52. Second mating structure; 52a. Second mating space; 521. Second connecting rod; 522. Second mating rod; 6. Handle mechanism; 7. Arc extinguishing assembly; 8. Overcurrent protection components; 81. Magnetic protection components; 82. Metal protection components; X, first direction; Y, second direction; Z, third direction. Detailed Implementation
[0025] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.
[0026] Please refer to this as well. Figures 1 to 22 This application provides an operating mechanism, which includes a contact assembly 1, comprising a moving contact assembly 2 and a stationary contact 3 capable of contacting and engaging; a locking assembly 4, comprising a first locking member 41 and a second locking member 42 capable of locking and engaging; and an anti-falling assembly 5, comprising a first engaging structure 51 and a second engaging structure 52 capable of coupling and engaging, wherein one of the first engaging structure 51 and the second engaging structure 52 is disposed on the moving contact assembly 2, and the other is disposed on the first locking member 41; wherein the operating mechanism has a closed state and a repulsive tripping state, during the process of transitioning from the closed state to the repulsive tripping state, the moving contact assembly 2 moves away from the stationary contact 3 and drives one of the first engaging structure 51 and the second engaging structure 52 to move towards the other for coupling connection, thereby driving the first locking member to disengage from the locking engagement with the second locking member 42.
[0027] In specific implementation, the operating mechanism of this application embodiment is located in the switchgear. The operating mechanism includes a contact assembly 1, a locking assembly 4 and an anti-falling assembly 5. The locking structure of the locking assembly 4 can fix the contact assembly 1, thereby keeping the contact assembly 1 in a stable state. The anti-falling assembly 5 is located between the contact assembly 1 and the locking assembly 4, thereby enabling the contact assembly 1 and the locking assembly 4 to be linked together.
[0028] The contact assembly 1 includes a moving contact assembly 2 and a stationary contact 3 that can make contact with each other. When the moving contact assembly 2 moves to make contact with the stationary contact 3, the entire switchgear is turned on. When the moving contact assembly 2 moves to make contact with the stationary contact 3, the entire switchgear is turned off. Therefore, the contact and engagement of the contact assembly 1 enables the switchgear to achieve the switching effect in the circuit.
[0029] like Figures 2 to 5 As shown, the operating mechanism has a closed state and a repulsive trip state. In the closed state, as follows: Figure 2 and Figure 5 As shown, the moving contact assembly 2 of the contact assembly 1 is in contact with the stationary contact 3, and the first locking member 41 and the second locking member 42 of the locking assembly 4 are in a locking state, so that the moving contact assembly 2 and the stationary contact 3 maintain a stable contact state, and the switching device can stably conduct current.
[0030] During the transition from the closed state to the repulsive tripped state, i.e. Figures 2 to 3 In this state, a short-circuit current is generated between the contact assemblies 1. At this time, the moving contact assembly 2 is subjected to an electric repulsive force and is temporarily repelled from the stationary contact 3. To prevent the moving contact assembly 2 from falling back, such as Figure 5 As shown, in this embodiment of the application, one of the first mating structure 51 and the second mating structure 52 is disposed on the moving contact assembly 2, and the other is disposed on the first locking member 41. When the moving contact assembly 2 is activated, the first mating structure 51 and the second mating structure 52 move relative to each other and achieve coupling connection, thereby driving the first locking member 41 to move, thereby disengaging the locking engagement between the first locking member 41 and the second locking member 42. The moving contact assembly 2 is no longer subject to the locking force applied by the locking assembly 4 to fall back towards the stationary contact 3, thus avoiding the short circuit failure of the switchgear and improving the overall breaking and current limiting capability of the switchgear.
[0031] In the embodiments of this application, such as Figure 4 As shown, the operating mechanism also has a tripped state. The repulsion tripped state is between the closed and tripped states, and is a temporary tripped state to avoid welding between the contact assemblies 1. The operating mechanism can be manually switched to the closed or tripped state. In the closed or tripped state, the latching assembly 4 is in the latched state to ensure the stability of closing or tripping. In the repulsion tripped state, the latching assembly 4 is disengaged, thereby releasing the lock on the contact assembly 1.
[0032] like Figure 21 As shown in the embodiment of this application, the operating mechanism includes a moving contact assembly 2 comprising a moving contact 21 and a contact support 22. The moving contact 21 is fixedly installed on the contact support 22, and the first locking member 41 is rotatably installed on the contact support 22.
[0033] In practice, the first locking element 41 is installed on the contact support 22. When the operating mechanism switches between the closed and open states, the handle mechanism 6 drives the locking assembly 4 to move as a whole, thereby enabling the contact support 22 to move through the first locking element 41 of the locking assembly 4. The moving contact 21 is fixedly installed on the contact support 22, and the movement of the contact support 22 can drive the moving contact 21 to move, thereby realizing the contact or separation between the moving contact 21 and the stationary contact 3.
[0034] When the moving contact 21 is passively repelled, the moving contact 21 drives the contact support 22 to move. Since the first locking member 41 is rotatably installed on the contact support 22, the first locking member 41 in the locked state can rotate relative to the contact support 22. The moving contact 21 and the contact support 22 can rotate toward the first locking member 41, which finally enables the coupling connection between the first mating structure 51 and the second mating structure 52, and drives the first locking member 41 to move until it disengages from the locking engagement with the second locking member 42.
[0035] Therefore, by setting up the contact support 22 and the moving contact 21 and the first locking member 41 arranged in different ways on the contact support 22, the closing, opening, and repulsion tripping of the operating mechanism can be realized respectively. This arrangement eliminates the need for additional structures, simplifying the overall structure and providing sufficient space for other mechanisms or components within the switchgear.
[0036] Specifically, such as Figure 18 As shown, the contact support member 22 has a first support portion 222 and a second support portion 223 that protrude along the first direction X and are located on the same side, so as to be assembled with the moving contact 21 and the first locking member 41 respectively.
[0037] like Figure 5 and Figure 8 As shown in the operating mechanisms of the first and second embodiments of this application, the first locking member 41 has a first locking part 411, the second locking member 42 has a second locking part 421, the second locking part 421 is disposed opposite to the first locking part 411, and the second locking part 421 and the first locking part 411 have a stepped structure that matches the shape of the first locking part 411.
[0038] In specific implementation, the second locking part 421 and the first locking part 411 are stepped structures that are adapted to each other. The stepped structures are easy to engage with each other and have high engagement stability, so that the contact assembly 1 of the operating mechanism can maintain a stable closed and open state.
[0039] like Figure 13 As shown in the third and fourth embodiments of this application, the operating mechanism includes a first locking member 41 with a first locking portion 411, and a contact support member 22 with a snap-fit surface 221 facing the first locking portion 411. The first locking portion 411 has a stepped structure, and the second locking member 42 has a rod-shaped structure. In the closed state, a snap-fit space is formed between the first locking portion 411 and the snap-fit surface 221, and the second locking member 42 passes through the snap-fit space and abuts against both the first locking portion 411 and the snap-fit surface 221. Figure 13In the diagram, the second locking element 42, which is represented by a dashed line, indicates different states of the operating mechanism. When the second locking element 42 is in the locking space, the operating mechanism is in the closed state; when the second locking element 42 is disengaged from the locking space, the operating mechanism is in the disengaged state.
[0040] In practical implementation, a locking space can be formed between the first locking part 411 of the stepped structure and the locking surface 221, that is... Figure 13 The area enclosed by the blue and red lines allows the rod-shaped second locking member 42 to pass through the locking space and abut against both the first locking part 411 and the locking surface 221, thus achieving a locking engagement between the first locking member 41 and the second locking member 42. In this embodiment, the overall locking structure is simplified by adjusting the position and structure of the first locking part 411 and the locking surface 221. Only the rod-shaped second locking member 42 is needed to achieve the overall locking engagement, eliminating the need for a complex second locking member 42 structure. This simplifies the overall structure and provides sufficient space for other mechanisms or components within the switchgear.
[0041] like Figures 2 to 7 As shown, in the operating mechanism of the first embodiment of this application, a first locking member 41 and a contact support member 22 are stacked along a first direction X, a first mating structure 51 is disposed on the first locking member 41 and protrudes along the first direction X, and a second mating structure 52 is disposed on the side of the contact support member 22 facing the first mating structure 51. The first mating structure 51 and the second mating structure 52 are at least partially overlapping in the first direction X.
[0042] In specific implementation, the first locking member 41 and the contact support member 22 are stacked along the first direction X, so that the first locking member 41 can be installed on the surface of the contact support member 22 and rotate in a plane perpendicular to the first direction X, thereby achieving locking engagement with the second locking member 42.
[0043] The first mating structure 51 is provided on the first locking member 41 and protrudes along the first direction X. The second mating structure 52 is provided on the side of the contact support member 22 facing the first mating structure 51, so that the positions of the first mating structure 51 and the second mating structure 52 are opposite.
[0044] Furthermore, the first mating structure 51 and the second mating structure 52 are at least partially overlapped in the first direction X. During the rotation of the moving contact assembly 2, the second mating structure 52 can move to abut against the first mating structure 51, and the abutting part is the overlapping part in the first direction X. Under the abutting force of the second mating structure 52, the first locking member 41 where the first mating structure 51 is located can rotate with the contact support member 22, thereby realizing the disengagement from the second locking member 42.
[0045] The first embodiment of this application achieves the effect of repulsion tripping by setting a simple protruding structure in the first locking member 41 and the contact support member 22, thereby avoiding short circuit failure of the switching device. The overall layout and installation are relatively simple and occupy less space.
[0046] In the operating mechanism of the first embodiment of this application, the first locking member 41 further includes a release part 412 and a movable mating part 413 connected to each other. The release part 412 has a release mating surface 4121 disposed opposite to the movable mating part 413. The first locking part 411 is connected to the release part 412 and is disposed at a distance from the release mating surface 4121. The side of the movable mating part 413 opposite to the release part 412 is an arc-shaped surface, and the first mating structure 51 is connected to the arc-shaped surface.
[0047] In specific implementation, the tripping mating surface 4121 of the tripping part 412 is set away from the movable mating part 413 so as to facilitate movable mating with the overcurrent protection component 8. This allows the overcurrent protection component 8 to drive the first locking member 41 to move through the tripping mating surface 4121 in the overcurrent state, thereby realizing the tripping and re-locking between the first locking member 41 and the second locking member 42.
[0048] The first locking part 411 is connected to the release part 412 and is spaced apart from the release mating surface 4121. This can prevent the operation of the overcurrent protection component 8 from interfering with the locking engagement between the first locking part 411 and the second locking part 421, thus ensuring the locking stability of the locking component 4.
[0049] The side of the movable mating part 413 facing away from the tripping part 412 is arc-shaped, that is, the outer peripheral surface of the first locking part 411 facing away from the rotation center is arc-shaped. When the first locking part 41 rotates as a whole with the moving contact assembly 2, the arc-shaped surface can prevent the first locking part 41 from interfering with other parts in the switch electrical appliance, thus affecting the repulsion tripping action and ensuring the stability of the repulsion tripping.
[0050] The first mating structure 51 is connected to the arc-shaped surface, which facilitates contact and mating with the second mating structure 52 of the contact support member 22, and avoids interference with the first locking part 411 and the release part 412, which would affect the locking and release action.
[0051] like Figures 8 to 12 As shown in the second embodiment of the present application, the operating mechanism includes a first locking member 41 and a contact support member 22 stacked together along a first direction X. A first mating structure 51 is disposed on the first locking member 41 and protrudes in a direction away from the contact support member 22. A second mating structure 52 is disposed on the moving contact 21 and is positioned opposite to the first mating structure 51. The first mating structure 51 and the second mating structure 52 are at least partially overlapping in the first direction X.
[0052] In specific implementation, the first locking member 41 and the contact support member 22 are stacked along the first direction X, so that the first locking member 41 can be installed on the surface of the contact support member 22 and rotate in a plane perpendicular to the first direction X, thereby achieving locking engagement with the second locking member 42.
[0053] The first mating structure 51 is provided on the first locking member 41 and protrudes in the direction away from the contact support member 22. The second mating structure 52 is provided on the moving contact 21 and is positioned opposite to the first mating structure 51 and is at least partially overlapping in the first direction X, so that the protruding first mating structure 51 can abut against the second mating structure 52. The abutting part of the two is the overlapping part of the two in the first direction X.
[0054] When the moving contact 21 is pushed open, the moving contact 21 will drive its second mating structure 52 to rotate together, and the second mating structure 52 will come into contact with the first mating structure 51. Under the contact force of the second mating structure 52, the first locking member 41 where the first mating structure 51 is located can rotate with the moving contact 21, thereby realizing the disengagement from the second locking member 42.
[0055] The second embodiment of this application achieves the effect of repulsion and tripping by setting a simple protruding structure in the first locking member 41, thereby avoiding short circuit failure of the switching electrical appliance. Furthermore, the overall layout and installation are relatively simple and occupy less space.
[0056] It should be noted that the second mating structure 52 of the moving contact 21 is located in the middle region of the moving contact 21 itself. It is a rod structure between the contact and the body. Therefore, there is no need to make complex modifications to the structure of the moving contact 21, so that the coupling and mating of the second mating structure 52 and the first mating structure 51 can be achieved.
[0057] In the operating mechanism of the second embodiment of this application, the first locking member 41 further includes a first main body 414, a first mating structure 51 and a first locking part 411 are disposed on the first main body 414 at intervals, the first mating structure 51 and the first main body 414 surround each other to form a through first mating hole 41a, and a second mating structure 52 is disposed in the first mating hole 41a.
[0058] In specific implementation, the first mating structure 51 and the first locking part 411 are disposed at intervals on the first main body part 414, which can avoid interference between the coupling mating of the first mating structure 51 and the locking mating of the first locking part 411, while ensuring the stability of the coupling mating and the locking mating.
[0059] The first mating structure 51 and the first main body 414 enclose each other to form a through-hole 41a, so that the second mating structure 52 can be stably inserted into the first mating hole 41a. When the second mating structure 52 moves, it can abut against the inner surface of the first mating hole 41a. Therefore, the setting of the first mating hole 41a further improves the stability of the overall coupling.
[0060] Specifically, the first mating structure 51 includes a mating connection portion 513 and an abutment portion 514 connected at a bent angle, so that the abutment portion 514 can extend along the first direction X, thereby achieving a stable abutment fit with the second mating structure 52. The overall structure of the mating connection portion 513 and the abutment portion 514 connected at a bent angle is simple, which facilitates the moving contact 21 to enter the first mating hole 41a from the opening for installation, thus facilitating manufacturing and installation. Furthermore, the abutment portion 514 extending in the first direction X can ensure the stability of the coupling fit.
[0061] Specifically, the connecting part 513 has a through hole extending along the first direction X, so as to facilitate the through-hole mating with the metal protection component 82 of the overcurrent protection component 8, thereby achieving the tripping protection effect under overcurrent conditions.
[0062] like Figures 14 to 18 As shown in the third embodiment of the present application, the operating mechanism includes a first mating structure 51 and a first locking part 411 respectively disposed at the bottom and top of the first locking member 41, a second mating structure 52 disposed on the contact support member 22 to correspond to and mate with the first mating structure 51, and a snap-fit surface 221 disposed on the top of the contact support member 22 to correspond to and mate with the first locking part 411.
[0063] In specific implementation, the first mating structure 51 and the first locking part 411 are respectively located at the bottom and top of the first locking member 41. The separation of the two can prevent the coupling of the first mating structure 51 and the locking of the first locking part 411 from interfering with each other, while ensuring the stability of the coupling and locking.
[0064] Furthermore, the snap-fit surface 221 is provided on the top of the contact support member 22, so that the snap-fit surface 221 is positioned opposite to the first locking part 411, so as to form a snap-fit space for the second locking member 42 to pass through by correspondingly cooperating with the first locking part 411.
[0065] In the operating mechanism of the third embodiment of this application, the first locking member 41 further includes a second main body 415, and the first mating structure 51 includes a first connecting rod 511 and a first mating rod 512. The first connecting rod 511 extends along the direction from the second main body 415 to the moving contact 21, and the two ends of the first connecting rod 511 are respectively connected to the second main body 415 and the first mating rod 512. The first mating rod 512 extends along the first direction X to form a first mating space 51a with the second main body 415 and the first connecting rod 511. The second mating structure 52 of the contact support member 22 passes through the first mating space 51a.
[0066] In specific implementation, the first connecting rod 511 extends along the direction from the second main body 415 to the moving contact 21, and the first mating rod 512 extends along the first direction X, so that the first connecting rod 511, the first mating rod 512 and the second main body 415 are connected in sequence with bending angles, thereby forming a first mating space 51a, so that the second mating structure 52 of the contact support member 22 can be inserted.
[0067] The first mating rod 512, which extends along the first direction X, can abut against the second mating structure 52. When the moving contact assembly 2 rotates in a plane perpendicular to the first direction X, it will not slide relative to the first mating rod 512 in the first direction X, thereby ensuring a stable coupling between the two.
[0068] Furthermore, the first mating space 51a formed between the first connecting rod 511, the first mating rod 512 and the second main body 415 has an opening for the moving contact assembly 2 to pass through, which facilitates manufacturing and installation.
[0069] like Figures 19 to 22 As shown in the fourth embodiment of the present application, the operating mechanism includes a first mating structure 51 and a first locking part 411 respectively disposed at the bottom and top of the first locking member 41, and a second mating structure 52 and a snap-fit surface 221 respectively disposed at the bottom and top of the contact support member 22, so as to correspond and cooperate with the first mating structure 51 and the first locking part 411 respectively.
[0070] In specific implementation, the first mating structure 51 and the first locking part 411 are respectively located at the bottom and top of the first locking member 41. The separation of the two can prevent the coupling of the first mating structure 51 and the locking of the first locking part 411 from interfering with each other, while ensuring the stability of the coupling and locking.
[0071] Furthermore, the second mating structure 52 and the snap-fit surface 221 are respectively provided at the bottom and top of the contact support member 22, so that the snap-fit surface 221 is positioned opposite to the first locking part 411, so as to form a snap-fit space for the second locking member 42 to pass through in corresponding cooperation with the first locking part 411; and the second mating structure 52 can be positioned opposite to the first mating structure 51, so as to achieve coupling cooperation between the two.
[0072] In the operating mechanism of the fourth embodiment of this application, the second mating structure 52 includes a second connecting rod 521 and a second mating rod 522. The second connecting rod 521 extends along the direction from the contact support member 22 to the first locking member 41, and both ends of the second connecting rod 521 are respectively connected to the contact support member 22 and the second mating rod 522. The second mating rod 522 extends along the first direction X to form a second mating space 52a with the second connecting rod 521 and the contact support member 22. The first mating structure 51 of the first locking member 41 passes through the second mating space 52a.
[0073] In specific implementation, the second mating structure 52 provided on the contact support 22 is set as a protruding rod structure combining the second connecting rod 521 and the second mating rod 522, which can form a second mating space 52a for the first locking member 41 to pass through. This structural arrangement allows the contact support 22 to directly drive the first locking member 41 to rotate together through the second mating structure 52 when the moving contact assembly 2 rotates, thereby realizing the disengagement action, ensuring the timeliness of disengagement, and thus preventing the moving contact 21 from falling back.
[0074] The second mating rod 522, which extends along the first direction X, can abut against the first mating structure 51. When the first locking member 41 rotates in a plane perpendicular to the first direction X, it will not slide relative to the second mating rod 522 in the first direction X, thereby ensuring a stable coupling between the two.
[0075] Specifically, the first mating structure 51 is a rod-shaped structure that extends at an inclined angle to the first direction X. This structure facilitates the contact between the first mating structure 51 and the second mating rod 522.
[0076] It should be noted that the coupling and engagement of the first mating structure 51 with the first connecting rod 511 and the first mating rod 512 and the protruding second mating structure 52 in the third embodiment of this application, and the coupling and engagement of the second mating structure 52 with the rod-shaped structure 51 and the second connecting rod 521 and the second mating rod 522 in the fourth embodiment of this application, can be implemented independently or in combination.
[0077] In the operating mechanism of this application embodiment, in the closed state, there is a preset gap D between the first cooperating structure 51 and the second cooperating structure 52, and the preset gap D has a range of 0.1mm≤D≤1mm.
[0078] In practical implementation, in the closed state, there is a preset gap D between the first mating structure 51 and the second mating structure 52. That is, in the closed state, the first mating structure 51 and the second mating structure 52 cannot make complete contact, providing a certain amount of movement space for the moving contact assembly 2. Otherwise, if the moving contact assembly 2 experiences unexpected shaking, its second mating structure 52 will directly abut against the first mating structure 51 and push the first locking member 41 to move, causing the first locking member 41 and the second locking member 42 to disengage. Therefore, the setting of the preset gap D ensures that when the moving contact assembly 2 experiences unexpected movement due to a non-short-circuit high current in the closed state, the anti-fall component 5 will not cause the first locking member 41 and the second locking member 42 to accidentally disengage, thus ensuring the stability of the closed state.
[0079] The preset gap D is between 0.1mm and 1mm, which ensures that there is a sufficient distance between the first mating structure 51 and the second mating structure 52 to prevent accidental tripping caused by the unexpected movement of the moving contact assembly 2. It also avoids the situation where the gap between the first mating structure 51 and the second mating structure 52 is too large, resulting in insufficient repulsion distance for the first mating structure 51 and the second mating structure 52 to couple and engage, thus ensuring the stability of the repulsion tripping action.
[0080] like Figure 1 As shown in the embodiment of this application, a switching device is also provided, which includes the above-mentioned operating mechanism. The switching device also includes a handle mechanism 6, which is movably connected to the locking assembly 4 and drives the moving contact assembly 2 through the locking assembly 4; an arc extinguishing assembly 7, which is disposed on one side of the operating mechanism in the second direction Y; and an overcurrent protection assembly 8, which is disposed on at least one side of the operating mechanism in the third direction Z and is movably cooperated with the operating mechanism, for driving the moving contact assembly 2 to separate from the stationary contact 3 in the overcurrent state of the switching device.
[0081] In practical implementation, the switchgear includes an operating mechanism, a handle mechanism 6, an arc-extinguishing assembly 7, and an overcurrent protection assembly 8. The handle mechanism 6 is movably connected to the latching assembly 4 and drives the moving contact assembly 2 via the latching assembly 4. The user can sequentially control the latching assembly 4 and the moving contact assembly 2 through the handle mechanism 6 to open and close the switchgear. In both open and closed states, the latching assembly 4 is in a latched state. The overcurrent protection assembly 8 can independently control the operating mechanism to directly open the switchgear in an overcurrent condition. The arc-extinguishing assembly 7 can extinguish the arc generated during opening.
[0082] The operating mechanism includes a contact assembly 1, a locking assembly 4, and an anti-falling assembly 5. The locking structure of the locking assembly 4 can fix the contact assembly 1, thereby keeping the contact assembly 1 in a stable state. The anti-falling assembly 5 is located between the contact assembly 1 and the locking assembly 4, thereby enabling the contact assembly 1 and the locking assembly 4 to be linked together.
[0083] The operating mechanism has a closed state and a repulsive tripping state. In the closed state, the moving contact assembly 2 of the contact assembly 1 is in contact with the stationary contact 3, and the first locking member 41 and the second locking member 42 of the locking assembly 4 are in a locking state, so that the moving contact assembly 2 and the stationary contact 3 maintain a stable contact state. At this time, the switch can stably conduct current.
[0084] During the transition from the closed state to the repulsive tripping state, a short-circuit current is generated between the contact assemblies 1. At this time, the moving contact assembly 2 is subjected to an electric repulsive force and is briefly repelled from the stationary contact 3. In order to prevent the moving contact assembly 2 from falling back, in this embodiment, one of the first mating structure 51 and the second mating structure 52 is disposed on the moving contact assembly 2, and the other is disposed on the first locking member 41. When the moving contact assembly 2 moves, the first mating structure 51 and the second mating structure 52 move relative to each other and achieve coupling connection, thereby driving the first locking member 41 to move, so that the first locking member 41 and the second locking member 42 are disengaged from the locking engagement. The moving contact assembly 2 is no longer subjected to the locking force applied by the locking assembly 4 towards the stationary contact 3, thus avoiding the short-circuit failure of the switch and improving the overall breaking and current limiting capability of the switch.
[0085] The overcurrent protection component 8 is located on at least one side of the operating mechanism in the third direction Z, so that the arc extinguishing component 7 operating mechanism has sufficient arrangement space on the second direction Y side, thereby having sufficient capacity to ensure the arc extinguishing capability.
[0086] Specifically, the overcurrent protection component 8 includes a magnetic protection component 81 and a metal protection component 82, which are respectively located on opposite sides of the operating mechanism in the third direction Z. They can respectively perform the tripping operation of the operating mechanism under overcurrent conditions. Both cooperate with the first locking member 41 of the locking component 4 of the operating mechanism to realize the tripping and re-locking action of the locking component 4.
[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.
[0088] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.
Claims
1. An operating mechanism, characterized in that, include: The contact assembly (1) includes a movable contact assembly (2) and a stationary contact (3) capable of contacting and engaging. The locking assembly (4) includes a first locking member (41) and a second locking member (42) capable of locking and engaging. The anti-fall component (5) includes a first mating structure (51) and a second mating structure (52) that can be coupled together. One of the first mating structure (51) and the second mating structure (52) is disposed on the moving contact assembly (2), and the other is disposed on the first locking member (41). The operating mechanism has a closed state and a repulsion tripping state. During the transition from the closed state to the repulsion tripping state, the moving contact assembly (2) moves away from the stationary contact (3) and drives one of the first mating structure (51) and the second mating structure (52) to move towards the other for coupling connection, so as to drive the first locking member (41) to disengage from the locking engagement with the second locking member (42).
2. The operating mechanism according to claim 1, characterized in that, The moving contact assembly (2) includes a moving contact (21) and a contact support (22). The moving contact (21) is fixedly installed on the contact support (22), and the first locking member (41) is rotatably installed on the contact support (22).
3. The operating mechanism according to claim 2, characterized in that, The first locking member (41) has a first locking part (411), and the second locking member (42) has a second locking part (421). The second locking part (421) is positioned opposite to the first locking part (411), and the second locking part (421) and the first locking part (411) have a stepped structure that matches each other in shape.
4. The operating mechanism according to claim 2, characterized in that, The first locking member (41) has a first locking part (411), and the contact support member (22) has a snap-fit surface (221) facing the first locking part (411). The first locking part (411) has a stepped structure, and the second locking member (42) has a rod-shaped structure. In the closed state, a locking space is formed between the first locking part (411) and the locking surface (221), and the second locking member (42) passes through the locking space and abuts against and cooperates with both the first locking part (411) and the locking surface (221).
5. The operating mechanism according to claim 3, characterized in that, The first locking member (41) and the contact support member (22) are stacked along the first direction (X). The first mating structure (51) is disposed on the first locking member (41) and protrudes along the first direction (X). The second mating structure (52) is disposed on the side of the contact support member (22) facing the first mating structure (51). The first mating structure (51) and the second mating structure (52) are at least partially overlapping in the first direction (X).
6. The operating mechanism according to claim 5, characterized in that, The first locking member (41) further includes a release part (412) and a movable mating part (413) connected to each other. The release part (412) has a release mating surface (4121) facing away from the movable mating part (413). The first locking part (411) is connected to the release part (412) and is spaced apart from the release mating surface (4121). The side of the movable mating part (413) facing away from the release part (412) is arc-shaped, and the first mating structure (51) is connected to the arc-shaped surface.
7. The operating mechanism according to claim 3, characterized in that, The first locking member (41) and the contact support member (22) are stacked along the first direction (X). The first mating structure (51) is disposed on the first locking member (41) and protrudes in the direction away from the contact support member (22). The second mating structure (52) is disposed on the moving contact (21) and is positioned opposite to the first mating structure (51). The first mating structure (51) and the second mating structure (52) are at least partially overlapping in the first direction (X).
8. The operating mechanism according to claim 7, characterized in that, The first locking member (41) further includes a first main body (414), the first mating structure (51) and the first locking part (411) are disposed on the first main body (414) at intervals, the first mating structure (51) and the first main body (414) surround each other to form a through-hole (41a), and the second mating structure (52) passes through the first mating hole (41a).
9. The operating mechanism according to claim 4, characterized in that, The first mating structure (51) and the first locking part (411) are respectively provided at the bottom and top of the first locking member (41), the second mating structure (52) is provided on the contact support member (22) to cooperate with the first mating structure (51), and the snap-fit surface (221) is provided on the top of the contact support member (22) to cooperate with the first locking part (411).
10. The operating mechanism according to claim 9, characterized in that, The first locking member (41) further includes a second main body (415), and the first mating structure (51) includes a first connecting rod (511) and a first mating rod (512). The first connecting rod (511) extends along the direction from the second main body (415) to the moving contact (21), and the two ends of the first connecting rod (511) are respectively connected to the second main body (415) and the first mating rod (512). The first mating rod (512) extends along a first direction (X) to form a first mating space (51a) with the second main body (415) and the first connecting rod (511). The second mating structure (52) of the contact support member (22) passes through the first mating space (51a).
11. The operating mechanism according to claim 4, characterized in that, The first mating structure (51) and the first locking part (411) are respectively located at the bottom and top of the first locking member (41), and the second mating structure (52) and the snap-fit surface (221) are respectively located at the bottom and top of the contact support member (22) to correspond and cooperate with the first mating structure (51) and the first locking part (411) respectively.
12. The operating mechanism according to claim 9, characterized in that, The second mating structure (52) includes a second connecting rod (521) and a second mating rod (522). The second connecting rod (521) extends along the direction from the contact support (22) to the first locking member (41), and both ends of the second connecting rod (521) are connected to the contact support (22) and the second mating rod (522) respectively. The second mating rod (522) extends along the first direction (X) to form a second mating space (52a) with the second connecting rod (521) and the contact support (22). The first mating structure (51) of the first locking member (41) passes through the second mating space (52a).
13. The operating mechanism according to any one of claims 1 to 12, characterized in that, In the closed state, there is a preset gap D between the first mating structure (51) and the second mating structure (52), and the preset gap D has a range of 0.1mm≤D≤1mm.
14. A switching device, characterized in that, The switching device further includes the operating mechanism as described in any one of claims 1 to 13, and further includes: Handle mechanism (6), which is movably connected to the latch assembly (4) and drives the moving contact assembly (2) through the latch assembly (4); Arc extinguishing component (7) is disposed on one side of the operating mechanism in the second direction (Y); An overcurrent protection component (8) is disposed on at least one side of the operating mechanism in the third direction (Z) and is movably engaged with the operating mechanism for driving the moving contact assembly (2) to separate from the stationary contact (3) in the overcurrent state of the switchgear.