Operating mechanism and switchgear

Abstract

An operating mechanism comprises a mechanism body and a rotating shaft, the rotating shaft is arranged to rotate around an axis o-o and is located on one side of the mechanism body in the direction of the axis o-o, the mechanism body comprises a body support, a rocker arm and a main shaft, a transmission structure, a connecting rod structure and a main spring; the rocker arm and the main shaft are respectively arranged to rotate around an axis o1-o1, the axis o1-o1 is arranged in parallel and at intervals with the axis o-o; the transmission structure comprises a rotating part arranged to rotate around the axis o-o on the body support; when the main shaft rotates around the axis o1-o1, the rotating part is driven to rotate around the axis o-o, and the rocker arm is driven to rotate around the axis o1-o1. A switch electric appliance comprises the operating mechanism. The operating mechanism and the switch electric appliance have the design that the rotating centers of the main shaft and the rocker arm coincide, the transmission structure is additionally provided with the rotating part to transmit the torque for the main shaft and the rocker arm with the rotating centers coinciding, the rotating centers of the rotating part and the rotating shaft coincide, the relative positions of the main shaft and the rotating shaft are convenient to adjust, and the compact arrangement of the main shaft and the rocker arm provides more space for other structures.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to an operating mechanism and a switching device including the operating mechanism. Background Technology

[0002] Due to the rapid development of the photovoltaic industry, the application of disconnect switches in photovoltaic inverters is becoming increasingly widespread. As the integration level of photovoltaic inverters increases, the size of disconnect switches becomes more critical, leading to a demand for smaller disconnect switches to achieve the same functionality.

[0003] The operating mechanism of the existing technology adopts a design in which the rotation centers of the main shaft and the rocker arm do not coincide. This design has some problems: First, the structure of the operating mechanism is not compact and the volume is large, which does not meet the requirements of the miniaturization design of the existing disconnect switches; second, the design is unreasonable, cannot meet the requirements of mechanical performance, and is laborious to operate and inconvenient to use.

[0004] Furthermore, existing disconnect switches are typically equipped with double-layer springs to provide operating force for the operating mechanism to close, open, and trip the switch body. The drawback is that the double-layer springs result in a larger overall size of the operating mechanism, leading to an increase in the thickness of the disconnect switch and occupying a significant amount of installation space within the electrical cabinet. Utility Model Content

[0005] The purpose of this utility model is to overcome at least one defect of the prior art and to provide an operating mechanism and a switching device including the operating mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An operating mechanism includes a mechanism body and a rotating shaft for transmission connection with a moving contact mechanism of a switching device. The rotating shaft is rotatably arranged about an axis oo and located on one side of the mechanism body in the direction of the axis oo. The mechanism body includes a body support, a rocker arm and a main shaft respectively rotatably arranged on the body support, a transmission structure respectively transmissionally connected to the main shaft and the rocker arm, a connecting rod structure arranged on the body support and transmissionally connected to the rotating shaft, and a main spring with both ends respectively connected to the rocker arm and the connecting rod structure for providing opening and closing driving force. When the operating mechanism opens or closes, the main shaft is driven to rotate by an external force. The main shaft drives the rocker arm to rotate through the transmission structure. After the rocker arm drives the main spring to the maximum energy storage position, the main shaft continues to rotate and drives the main spring past the maximum energy storage position through the rocker arm. Then, the main spring begins to release energy and drives the rotating shaft to rotate to the opening or closing position through the connecting rod structure. The rocker arm and the main shaft are respectively rotatably arranged about an axis o1-o1, and the axis o1-o1 is parallel and spaced apart from the axis oo.

[0008] The transmission structure includes a rotating component that is rotatably mounted on the main body support around the axis oo. When the main shaft rotates around the axis o1-o1, it drives the rotating component to rotate around the axis oo, thereby driving the rocker arm to rotate around the axis o1-o1.

[0009] Optionally, the transmission structure further includes a first transmission disk, which is mounted on the main shaft and rotates synchronously with it. The rotating component is directly or indirectly connected to the first transmission disk and the rocker arm respectively.

[0010] Optionally, the rotating component is indirectly connected to the first transmission disk via a first transmission link, the first transmission link being connected to both the first transmission disk and the rotating component; the rotating component is indirectly connected to the rocker arm via a second transmission link, the second transmission link being connected to both the rotating component and the rocker arm.

[0011] Optionally, the rotating component is a disc-shaped structure and is arranged parallel to and spaced apart from the first transmission disc along the axis oo. The rocker arm is at least partially on the same plane as the rotating component. The first transmission link and the second transmission link are respectively located between the first transmission disc and the rotating component along the axis oo. One end of the first transmission link is stacked and hinged on the first transmission disc, and the other end is stacked and hinged on the rotating component. One end of the second transmission link is stacked and hinged on the rotating component, and the other end is stacked and hinged on the portion of the rocker arm and the rotating component that is on the same plane.

[0012] Optionally, the point where the rotating component is connected to the first transmission disk is designated as the first-stage transmission point, and the point where the rotating component is connected to the rocker arm is designated as the last-stage transmission point. The first-stage transmission point and the last-stage transmission point are located on both sides of the line connecting axis oo and axis o1-o1.

[0013] Optionally, the rocker arm is rotatably mounted on the main body support at least indirectly via a main shaft, the main shaft being rotatably connected to the main body support, and the rocker arm having a first rocker arm rotating part that rotatably cooperates with the main shaft.

[0014] Optionally, the linkage structure includes a jump buckle and a lock buckle that are rotatably mounted on the main body bracket and engage with each other, a first linkage, a second linkage, a transmission rod, and a transmission shaft; the first linkage is hinged to the jump buckle and the second linkage respectively, one end of the main spring is connected to the rocker arm and the other end is connected to the hinge of the first linkage and the second linkage, the second linkage is also hinged to the transmission rod to drive it to rotate around the axis oo, the transmission shaft is mounted on the transmission rod and is spaced parallel to the axis oo, and one end of the transmission shaft is connected to the rotating shaft for transmission.

[0015] The transmission rod and the rotating component are coaxially arranged. The rotating component is mounted on a common shaft and rotates synchronously with the common shaft. The axis of the common shaft is the axis oo. The common shaft is rotatably connected to the main body support, and the transmission rod is rotatably connected to the common shaft.

[0016] Optionally, the operating mechanism further includes a tripping assist structure that indirectly drives the main shaft. The tripping assist structure includes an assist turntable, which includes a turntable body rotatably arranged around axis oo and an assisting part arranged on the turntable body. The rotating component and the turntable body are coaxially arranged and are respectively arranged on a common shaft and rotate synchronously with the common shaft. The axis of the common shaft is axis oo. The common shaft is rotatably connected to the main body support. When the operating mechanism trips the circuit, the main shaft drives the common shaft to rotate through the rotating component. The assist turntable rotates synchronously with the common shaft, so that the assisting part applies a tripping assist force to the turntable before, during, or after the main spring begins to release energy, causing it to rotate toward the tripping position.

[0017] Optionally, the tripping assist structure further includes an assist linkage, which is connected to the turntable body and the rocker arm transmission respectively; the main shaft drives the rocker arm to rotate simultaneously through the tripping assist structure and the transmission structure.

[0018] Optionally, the transmission structure and the tripping assist structure are arranged on both sides of the main body bracket in the axial direction oo, and the tripping assist structure is located between the main body bracket and the rotating shaft.

[0019] A switching device, the switching device comprising the operating mechanism described in any one of the claims.

[0020] Optionally, the switching device includes a switch body, which includes at least one set of switch units. The switch units and the operating mechanism are stacked together along the axis oo. The rotating shaft is coaxially rotatably connected to the moving contact mechanism of the switch unit.

[0021] Optionally, it also includes a trip unit, which is installed inside the housing of the operating mechanism, with the rotation center of the operating mechanism's shaft and the trip unit located on opposite sides of the center of the housing.

[0022] The operating mechanism and switch of this utility model adopt a design in which the rotation centers of the main shaft and the rocker arm coincide. By adding a rotating component to the transmission structure, torque is transmitted to the main shaft and the rocker arm with the same rotation center. The rotation center of the rotating component coincides with that of the rotating shaft, which facilitates the adjustment of the relative position of the main shaft and the rotating shaft. The compact design of the main shaft and the rocker arm provides more space for other structures. For example, there is enough space for the transmission structure to set more transmission stages or for the main shaft and / or the rotating component to set a longer lever arm to achieve the transmission of greater torque. That is, the main shaft with a small torque outputs a large torque to the rocker arm through the transmission structure. In the scheme of using a single main spring to replace the double-layer spring in the operating mechanism, the same mechanical performance can be guaranteed, and the rotation operation of the main shaft is more labor-saving.

[0023] In addition, the first-stage transmission point and the last-stage transmission point of the transmission structure are located on both sides of the line connecting the rotation center of the main shaft and the rotating component, so that the rotating component can transmit greater torque to the main shaft and the rocker arm. Attached Figure Description

[0024] Figure 1 This is a perspective view of the operating mechanism of the first embodiment of this utility model;

[0025] Figure 2 This is an exploded view of the operating mechanism of the first embodiment of this utility model;

[0026] Figure 3 This is a cross-sectional view of the operating mechanism of the first embodiment of the present invention, showing the mechanism body and the rotating shaft;

[0027] Figure 4 This is a cross-sectional view of the operating mechanism of the first embodiment of the present invention, showing the trip unit;

[0028] Figure 5 This is a schematic diagram of the structure of the operating mechanism with the top cover removed according to the first embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the mechanism body of the first embodiment of this utility model, showing the transmission structure;

[0030] Figure 7 This is a schematic diagram of the main shaft, transmission structure, and rocker arm of the first embodiment of this utility model;

[0031] Figure 8 This is a cross-sectional view of the mechanism body of the first embodiment of this utility model;

[0032] Figure 9 This is a schematic diagram of the mechanism body of the first embodiment of the present invention, showing the tripping assist structure;

[0033] Figure 10 This is a schematic diagram of the structure of the rotating shaft of this utility model;

[0034] Figure 11 This is a structural schematic diagram of the front of the mounting component of this utility model;

[0035] Figure 12 This is a structural schematic diagram of the reverse side of the mounting component of this utility model;

[0036] Figure 13 It is a cross-sectional view of the switching device;

[0037] Figure 14 This is an exploded view of the drive shaft and drive rod of this utility model.

[0038] Explanation of reference numerals in the attached figures

[0039] 100 Switch body; 200 Moving contact mechanism; 300 Operating mechanism; 400 Mechanism body; 500 Body support; 510 First side plate; 520 Second side plate; 521 Support notch; 530 Limiting shaft; 1 Main shaft; 2 Transmission structure; 21 First transmission disc; 22 First transmission link; 23 Rotating component; 230 Common shaft; 231 Rotating component mounting hole; 24 Second transmission link; 25 Second transmission disc; 26 Third transmission link; 3 Opening assist structure; 31 Assist turntable; 310 Turntable body; 311 Assist part; 32 Assist link; 4 Rocker arm; 41 Rocker arm beam; 42 First rocker arm leg; 421 First rocker arm rotating part; 43 Second rocker arm leg; 431 Second rocker arm rotating part; 5 First link; 6 Main spring; 7 Jumper latch; 8 Locking latch; 9 Re-latch; 10 Second link 11. Drive shaft; 12. Drive rod, 121. Closing limit part, 122. Opening limit part, drive rod body 123, drive rod connecting part 124, drive rod insertion hole 125, drive rod hinge hole 126, drive rod mounting hole 127, rotating boss 128, connecting rib 129; 13. Rotary shaft, 130. Rotary shaft insertion hole, 131. Rotary shaft arc groove, 132. Rotary shaft stop surface, 133. Rotary shaft rotating part; 15. Opening auxiliary spring; 16. Mechanism housing, 161. Top cover, 1611. Housing top wall, 1612. Pressing boss, 162. Base, 1621. Housing bottom wall, 1622. Positioning boss; 17. Mounting part, 171. Connecting hole, 172. Supporting boss, 173. Rotary shaft connecting part, 174. Mounting part notch, 175. Partition plate; 18. Trip device, 180. Limiting part, 181. Positioning groove. Detailed Implementation

[0040] The specific embodiments of the operating mechanism and switching device of this utility model are further described below with reference to the accompanying drawings. The operating mechanism and switching device of this utility model are not limited to the descriptions in the following embodiments.

[0041] like Figure 1-14 The diagram shows an embodiment of the switching device of this utility model. In this embodiment, the switching device is preferably an isolating switch or a circuit breaker of the same type of application scenario.

[0042] refer to Figure 13 This embodiment of the switching device includes an operating mechanism 300 and a switch body 100. The switch body 100 includes at least one set of switching units, each including a contact system. The contact system includes a rotatably disposed moving contact mechanism 200 and a stationary contact. The operating mechanism is operatively connected to the moving contact mechanism 200 of each switching unit, driving the moving contact mechanism 200 to rotate and close or open with the corresponding stationary contact. Further, the moving contact mechanism 200 is rotatably disposed around axis oo, and the operating mechanism 300 and the switching units of the switch body 100 are stacked along axis oo. Specifically, the switch body 100 includes two or more sets of switching units, each set stacked along axis oo, with the moving contact mechanisms 200 of each switching unit sequentially operatively connected. The operating mechanism 300 is operatively connected to the moving contact mechanism 200 of the switching unit adjacent to the operating mechanism 300.

[0043] In other embodiments, the operating mechanism 300 can also be connected to the moving contact mechanism 200 of each switch unit via a transmission linkage. For example, the transmission linkage passes through the contact support of each moving contact mechanism 200 in sequence, and one end of the transmission linkage is connected to the rotating shaft 13 of the operating mechanism 300.

[0044] like Figure 1-9 The image shows a first embodiment of the operating mechanism 300.

[0045] In this embodiment, the operating mechanism 300 includes a mechanism body 400 and a rotating shaft 13 for transmission connection with the moving contact mechanism 200 of the switching device. The rotating shaft 13 is rotatably arranged around the axis oo and is located on the side of the mechanism body 400 closer to the moving contact mechanism 200 in the direction of the axis oo. That is, the mechanism body 400 and the rotating shaft 13 are stacked along the axis oo. (Refer to...) Figure 5-6 The mechanism body 400 includes a body support 500, a rocker arm 4 and a main shaft 1 rotatably mounted on the body support 500, a transmission structure 2 that is driveably connected to the main shaft 1 and the rocker arm 4 (that is, the main shaft 1 is driveably connected to the rocker arm 4 through the transmission structure 2, thereby driving the rocker arm 4 to rotate), a connecting rod structure mounted on the body support 500 and driveably connected to the rotating shaft 13, and a main spring 6 whose two ends are respectively connected to the rocker arm 4 and the connecting rod structure and used to provide the opening and closing driving force. Figure 8When the operating mechanism 300 opens or closes, the main shaft 1 is driven to rotate by an external force. The main shaft 1 drives the rocker arm 4 to rotate through the transmission structure 2. The rocker arm 4 first drives the main spring 6 to move to the maximum energy storage position. At this time, the main spring 6 stores the maximum energy and the position of the rocker arm 4 is the critical position (also known as the dead point position). The rocker arm 4 continues to rotate and drives the main spring 6 to pass the maximum energy storage position, so that the main spring 6 releases energy. The released main spring 6 drives the rotating shaft 13 to rotate to the open or closed position through the linkage structure. The rotating shaft 13 then drives the moving contact mechanism 200 of the switch unit to rotate, so that each switch unit is opened or closed, that is, the switchgear is opened or closed.

[0046] like Figure 2-4 , Figure 10-12 As shown, an improvement of this application is that the operating mechanism 300 includes a mechanism housing 16, the mechanism housing 16 having a top wall 1611 and a bottom wall 1621 spaced apart and opposite to each other along the axis oo, the mechanism housing 16 is provided with a mounting member 17, the mounting member 17 is located between the top wall 1611 and the bottom wall 1621 in the axis oo, and divides the internal space of the mechanism housing 16 into a first mounting cavity between the mounting member 17 and the top wall 1611, and a second mounting cavity between the mounting member 17 and the bottom wall 1621, the mounting member 17 is provided with a connecting hole 171 connecting the first mounting cavity and the second mounting cavity, the mechanism body 400 is installed in the first mounting cavity, the rotating shaft 13 is installed in the second mounting cavity and its upper limit in the axis oo is located between the mounting member 17 and the bottom wall 1621, the mechanism body 400 at least partially passes through the connecting hole 171 and extends into the second mounting cavity to be connected to the rotating shaft 13 in a driving manner. The thickness direction of the switchgear is along the axis oo, and the length and width directions of the switchgear are perpendicular to the axis oo. The operating mechanism 300 can use a single main spring 6, reducing the number of springs and thus reducing the space occupied by springs in the thickness direction of the switchgear, compressing the volume of the operating mechanism 300, reducing the volume of the switchgear, or providing space in the thickness direction for other structures such as the mounting component 17. In this embodiment, the switchgear eliminates the transition layer, and the rotating shaft 13 is integrated with the mechanism body 400 within the mechanism housing 16. The mounting component 17 isolates the rotating shaft 13 and the mechanism body 400 in two mounting cavities in the thickness direction of the switchgear, and the rotating shaft 13 is confined in a separate mounting cavity, so that the rotating shaft 13 and the mechanism body 400 are compactly arranged in the thickness direction of the switchgear, reducing the volume of the operating mechanism 300, and the actions do not interfere with each other, avoiding the loss of output power caused by frictional interference during movement, and ensuring the same mechanical performance in the solution of using a single main spring 6 instead of a double-layer spring in the operating mechanism 300.

[0047] In this embodiment, the main shaft 1 of the mechanism body 400 extends at least partially from the first through hole on the top wall 1611 of the outer shell into the mechanism housing 16. A handle may be provided on the portion of the main shaft 1 extending out of the mechanism housing 16, and external force drives the main shaft 1 to rotate via the handle for easy rotation operation. The rotating shaft 13 extends at least partially from the second through hole on the bottom wall 1621 of the outer shell into the mechanism housing 16 and is then connected to the moving contact mechanism 200. The mechanism housing 16 in this embodiment includes a top cover 161 and a base 162. The base 162 includes a bottom wall 1621 and side walls integrally connected to the bottom wall 1621. The top cover 161 integrally has the top wall 1611 and covers the side walls of the base 162 to form the mechanism housing 16. The mounting member 17 is preferably a plate-like structure fixedly assembled inside the mechanism housing 16, and the four sides of the mounting member 17 match and fit against the side walls of the mechanism housing 16.

[0048] Furthermore, such as Figure 10-12 As shown, the rotating shaft 13 is rotatably connected to the mounting component 17. The mounting component 17 has a rotating shaft connecting portion 173 on the side facing the bottom wall 1621 of the outer casing for rotatably connecting with the rotating shaft 13. The rotating shaft 13 has a rotating shaft rotating portion 133, and the rotating shaft rotating portion 133 and the rotating shaft connecting portion 173 are rotatably connected and coaxially arranged. The rotating shaft 13 is positioned by the rotating shaft connecting portion 173 on the mounting component 17, ensuring that the rotating shaft 13 and the mounting component 17 are concentrically assembled. This allows the rotating shaft 13 to rotate freely and flexibly around the axis of the rotating shaft connecting portion 173 on the mounting component 17, avoiding rotational misalignment that could cause frictional resistance and output torque loss. Furthermore, assembly and positioning are more convenient, facilitating production assembly. Preferably, the rotating shaft part 133 is a circular groove, and the rotating shaft connecting part 173 is a circular boss structure that protrudes from the side of the mounting part 17 facing the bottom wall 1621 of the outer shell, and is inserted into the rotating shaft part 133 to rotate and cooperate with the rotating shaft part 133.

[0049] Furthermore, the upper limit of the mechanism body 400 in the axial direction oo is located between the mounting member 17 and the top wall 1611 of the outer casing. Specifically, the inner side of the top wall 1611 of the outer casing has at least one pressing boss 1612, which is engaged with the side of the body support 500 of the mechanism body 400 away from the rotating shaft 13 in the axial direction oo. The side of the mounting member 17 facing the top wall 1611 of the outer casing has at least one supporting boss 172, which is engaged with the side of the body support 500 of the mechanism body 400 near the rotating shaft 13 in the axial direction oo. That is, the pressing boss 1612 of the top wall 1611 of the outer casing and the supporting boss 172 of the mounting member 17 are aligned with the axis oo of the body support 500. The limiting mechanism on both sides in the oo direction limits the main body bracket 500 in the oo direction, ensuring that the main body 400 is reliably and accurately positioned in the first mounting cavity. This guarantees reliable torque output from the main body 400 and makes assembly and positioning more convenient, facilitating production and assembly. The transmission structure 2 is located between the side of the main body bracket 500 away from the rotating shaft 13 and the top wall 1611 of the outer shell. The connecting rod structure is located inside the main body bracket 500 and extends at least partially out of the main body bracket 500, passes through the connecting hole 171, and extends into the second mounting cavity to be connected to the rotating shaft 13.

[0050] Furthermore, such as Figure 8-9As shown, the linkage structure includes a snap fastener 7 and a latch 8, which are rotatably mounted on the main body bracket 500 and are engaged with a snap fastener, a first link 5, a second link 10, a transmission rod 12, and a transmission shaft 11. The first link 5 is hinged to the snap fastener 7 and the second link 10. One end of the main spring 6 is connected to the rocker arm 4 and the other end is connected to the hinge joint of the first link 5 and the second link 10, i.e., it is connected to a hinge shaft passing through the first link 5 and the second link 10. The second link 10 is also hinged to the transmission rod 12 and drives it to rotate around the axis oo. The transmission shaft 11 is mounted on the transmission rod 12 and is parallel to and spaced apart from the axis oo. One end of the transmission shaft 11 extends out of the main body bracket 500 and passes through the connecting hole 171 of the mounting member 17 and extends into the second mounting cavity to be connected to the rotating shaft 13. The transmission shaft 11 makes a circular motion around the axis oo and drives the rotating shaft 13 to rotate around the axis oo. Furthermore, one end of the jump buckle 7 is rotatably mounted on the main body bracket 500 and the other end is fastened to the lock buckle 8. One end of the first connecting rod 5 is hinged to the middle of the jump buckle 7 and the other end is hinged to one end of the second connecting rod 10. The other end of the second connecting rod 10 is hinged to one end of the transmission rod 12. The middle of the transmission rod 12 is rotatably mounted around the axis oo, and the other end of the transmission rod 12 is provided with a transmission shaft 11. The end of the main spring 6 connected to the rocker arm 4 and the end of the main spring 6 connected to the hinge of the first connecting rod 5 and the second connecting rod 10 are respectively located on both sides of the jump buckle 7. When the rocker arm 4 rotates, it drives the main spring 6 to store energy. After the rocker arm 4 continues to rotate and drives the main spring 6 past the maximum energy storage position, the main spring 6 begins to release energy and drives the rotating shaft 13 to rotate through the second connecting rod 10 of the connecting rod structure.

[0051] Another improvement of this application is that, Figure 8-9As shown, the main body support 500 has a support notch 521 on one side of the axis oo, at least near the rotating shaft 13. The connecting rod structure and the main spring 6 are both located inside the main body support 500. The transmission rod 12 of the connecting rod structure is rotatably located inside the main body support 500 around the axis oo. One end of the transmission shaft 11 on the transmission rod 12 extends out of the main body support 500 from the support notch 521, passes through the connecting hole 171 of the mounting part 17, and extends into the second mounting cavity to drive and connect with the rotating shaft 13. The transmission rod 12 has a closing limit part 121 and a opening limit part 122. The closing limit part 121 and the opening limit part 122 respectively cooperate with the main body support 500 to limit the rotating shaft 13 to the closing position and the opening position. The operating mechanism and switching device of this embodiment limit the rotating shaft 13 to the closed and open positions through the limiting cooperation between the transmission rod 12 and the main body bracket 500. The side of the main body bracket 500 near the rotating shaft 13 is designed with a notch, which provides clearance space for the movement trajectory of the transmission shaft 11 connected between the transmission rod 12 and the rotating shaft 13, while reducing the installation requirements and assembly accuracy requirements, facilitating the installation of the operating mechanism 300, reducing the size of the main body bracket 500, saving materials and space, and providing more clearance space for the movement trajectory of the transmission shaft 11. This allows the transmission rod 12 to be designed with a larger rotation angle in a limited space, and ensures the same mechanical performance state even when the operating mechanism 300 uses a single main spring 6 instead of a double-layer spring.

[0052] In this embodiment, as Figure 9 and Figure 14 As shown, the transmission rod 12 includes a transmission rod connecting portion 124 disposed opposite to the bracket notch 521. The transmission rod connecting portion 124 is provided with a transmission rod insertion hole 125, and the transmission shaft 11 is inserted into the transmission rod insertion hole 125. The transmission rod 12 is installed into the main body bracket 500, and the transmission rod connecting portion 124 is exposed through the bracket notch 521, so that the transmission shaft 11 can be directly inserted into the transmission rod connecting portion 124 for easy assembly.

[0053] Preferably, the main body bracket 500 has a bracket notch 521 on one side of the rotating shaft 13 in the vertical direction of the axis oo. That is, one end of the transmission rod connecting part 124 near the rotating shaft 13 is exposed through the bracket notch 521, and the other end of the transmission rod connecting part 124 away from the rotating shaft 13 is blocked by the side of the main body bracket 500 away from the rotating shaft 13. In other words, one end of the transmission shaft 11 connected to the rotating shaft 13 extends out of the main body bracket 500 through the bracket notch 521, and the other end of the transmission shaft 11 away from the rotating shaft 13 is inserted into the transmission rod insertion hole 125. It does not contact the side of the main body bracket 500 away from the rotating shaft 13 but is blocked by that side of the main body bracket 500 and is not exposed. One end of the transmission shaft 11 extends out and the other end does not need to extend out of the main body bracket 500, which further facilitates installation. Of course, as another embodiment, the main body bracket 500 may have bracket notches 521 on one side near the rotating shaft 13 and the other side away from the rotating shaft 13 in the vertical direction of the axis oo. That is, the end of the transmission rod connecting part 124 near the rotating shaft 13 is exposed through the bracket notch 521, and the other end of the transmission rod connecting part 124 away from the rotating shaft 13 is also exposed through the bracket notch 521. That is, the end of the transmission rod connecting part 124 connected to the rotating shaft 13 extends out of the main body bracket 500 through the bracket notch 521, and the other end of the transmission rod connecting part 124 away from the rotating shaft 13 is inserted into the transmission rod insertion hole 125 and also extends out of the main body bracket 500 through the bracket notch 521.

[0054] Furthermore, the transmission rod 12 is rotatable between the first position and the second position. The main support 500 has a limiting shaft 530 inside. The limiting shaft 530 is located on the movement trajectory of the closing limiting part 121 from the first position to the second position, and on the movement trajectory of the opening limiting part 122 from the second position to the first position. When the transmission rod 12 rotates from the first position to the second position, it drives the rotating shaft 13 from the opening position to the closing position via the transmission shaft 11. At this time, the closing limiting part 121 and the limiting shaft 530 limit the rotating shaft 13 to the closing position. When the transmission rod 12 rotates from the second position to the first position, it drives the rotating shaft 13 from the closing position to the opening position via the transmission shaft 11. At this time, the opening limiting part 122 and the limiting shaft 530 limit the rotating shaft 13 to the opening position. The transmission rod 12 rotates to switch different parts to engage with the same limiting shaft 530 inside the main support 500, thereby limiting the rotating shaft 13 to the closed and open positions. The structure is simple and compact, and the limiting is reliable and stable.

[0055] In this embodiment, as Figure 6 and Figure 9As shown, the main body support 500 includes a first side plate 510 away from the rotating shaft 13 and a second side plate 520 close to the rotating shaft 13. That is, the first side plate 510 is the side of the main body support 500 away from the rotating shaft 13, and the second side plate 520 is the side of the main body support 500 close to the rotating shaft 13. The first side plate 510 and the second side plate 520 are spaced apart and opposite to each other along the axis oo, forming an internal space of the main body support 500 between the first side plate 510 and the second side plate 520. The second side plate 520 has a support notch 521 on one side in the vertical direction of the axis oo. Furthermore, the shape of the support notch 521 matches the movement trajectory of the transmission shaft 11. The limiting shaft 530 is connected between the first side plate 510 and the second side plate 520. Furthermore, the limiting shaft 530 is spaced apart and parallel to the axis oo, and is vertically connected between the first side plate 510 and the second side plate 520.

[0056] Furthermore, the middle part of the transmission rod 12 is rotatably arranged around the axis oo, and the opening limit part 122 and the closing limit part 121 are arranged on opposite ends of the transmission rod 12.

[0057] Specifically, such as Figure 8-9 and Figure 14 As shown, the transmission rod 12 includes a transmission rod body 123 and a transmission rod connecting portion 124 disposed on the transmission rod body 123. The transmission rod body 123 is a plate-shaped structure with its thickness direction along the axis oo. One end of the transmission rod body 123 in the length direction is provided with a transmission rod hinge hole 126 for hinged with the second connecting rod 10. The transmission rod connecting portion 124 is a cylindrical structure with its axial direction along the axis oo, and one radial side of the middle part of the transmission rod connecting portion 124 is integrally connected to the other side of the transmission rod body 123 in the length direction. The middle part of the transmission rod body 123 is provided with a transmission rod mounting hole 1 for the transmission rod 12 to rotate. 27. The axis of the transmission rod mounting hole 127 is the axis oo. Rotating bosses 128 are provided on both sides of the thickness direction of the middle part of the transmission rod body 123. The rotating bosses 128 are circular ring structures surrounding the transmission rod mounting hole 127. Connecting ribs 129 are provided on both sides of the transmission rod body 123, connecting the rotating bosses 128 and the transmission rod connecting part 124. The closing limit part 121 is provided on the side of the transmission rod body 123 with the transmission rod hinge hole 126 in the width direction. The opening limit part 122 is provided on the side of the transmission rod body 123 connected to the transmission rod connecting part 124 in the width direction.

[0058] Furthermore, such as Figure 8-9As shown, the mechanism body 400 also includes a re-clamp 9 rotatably mounted on the body support 500. The re-clamp 9 is located between the first side plate 510 and the second side plate 520 of the body support 500, and the re-clamp 9 engages with the latch 8. The re-clamp 9 is driven to rotate by an external force, releasing its engagement with the latch 8. The engagement between the latch 8 and the trip latch 7 is then released, causing the operating mechanism 300 to trip. It should be noted that the external force driving the re-clamp 9 to rotate can come from a short-circuit protection mechanism, an overload protection mechanism, or a magnetic flux trip device used to achieve remote tripping control. The short-circuit protection mechanism is an electromagnetic actuator, and the overload protection mechanism includes a bimetallic strip. The short-circuit protection mechanism and the overload protection mechanism can be set separately or as an integrated thermomagnetic protection mechanism, both of which can be implemented using existing technology. During the tripping, closing, tripping, and re-clamping processes of the operating mechanism 300, the operating principle of the mechanism body 400 and the rotating shaft 13 is the same as that of existing technology and will not be described further here.

[0059] like Figure 2-5 and Figure 12 As shown, the switchgear has a remote tripping function and also includes a trip unit 18 for driving the operating mechanism 300 to trip. When the operating mechanism 300 is closed and in the re-clamping state, the trip unit 18 receives a signal and drives the operating mechanism 300 to trip. That is, the trip unit 18 pushes the re-clamping 9 to rotate, releasing the latching engagement with the locking latch 8. The latching engagement between the locking latch 8 and the tripping latch 7 is then released, causing the operating mechanism 300 to trip. The mounting member 17 has a mounting notch 174 on one side in the vertical direction of the axis oo. The trip unit 18 is installed inside the mechanism housing 16 and located inside the mounting notch 174, and at least partially extends into the second mounting cavity. That is, the trip unit 18 occupies at least part of the same thickness space as the rotating shaft 13. The trip unit 18 is integrated into the operating mechanism 300, and the trip unit 18 does not occupy additional thickness space of the operating mechanism 300. The layout is reasonable and compact, which greatly saves the internal space of the distribution cabinet and reduces the operating cost while having the same remote tripping function. Furthermore, a partition 175 is provided at the mounting notch 174 on the mounting member 17, protruding towards the bottom wall 1621 of the outer casing, so that the partition 175 isolates the rotating shaft 13 from the trip unit 18.

[0060] Furthermore, the upper limit of the trip unit 18 in the axial direction oo is located between the top wall 1611 and the bottom wall 1621 of the housing. Fixing the trip unit 18 facilitates the output of the actuating force by the trip unit 18 and the transmission of force to the operating mechanism 300. Optionally, a limiting member 180 is mounted on the trip unit 18, and the upper limit of the limiting member 180 in the axial direction oo is located between the trip unit 18 and the top wall 1611 of the housing; for example, the limiting member 180 is a long strip structure, with one end abutting against the top side of the trip unit 18 and the other end engaging in a slot structure on the top wall 1611 of the housing. Optionally, the bottom side of the trip unit 18 is provided with a positioning groove 181, and the inner side of the bottom wall 1621 of the housing is provided with at least one positioning boss 1622. The positioning boss 1622 is located in the positioning groove 181 and is limited to the trip unit 18 in the direction of axis oo, and is also limited to the trip unit 18 in the direction perpendicular to axis oo. For example, the bottom wall 1621 of the housing is provided with two positioning bosses 1622, which are located in the same positioning groove 181 and are limited to the two side walls of the positioning groove 181 in the direction perpendicular to axis oo. Assembly and positioning are more convenient, facilitating production assembly.

[0061] like Figure 5-7 As shown, another improvement of this application is that the rotation centers of the rocker arm 4 and the main shaft 1 coincide, that is, the rocker arm 4 and the main shaft 1 are respectively arranged to rotate around the axis o1-o1, and the axis o1-o1 is arranged parallel to and spaced apart from the axis oo; the transmission structure 2 includes a rotating component 23 arranged to rotate around the axis oo on the main body support 500. When the main shaft 1 is driven by an external force to rotate around the axis o1-o1, it drives the rotating component 23 to rotate around the axis oo, thereby driving the rocker arm 4 to rotate around the axis o1-o1. The operating mechanism and switching device of this embodiment adopt a design in which the rotation centers of the main shaft 1 and the rocker arm 4 coincide. The transmission structure 2 adds a rotating component 23 to transmit torque to the main shaft 1 and the rocker arm 4 with the rotation centers coincided. The rotation center of the rotating component 23 coincides with the rotation center of the rotating shaft 13, which facilitates the adjustment of the relative position of the main shaft 1 and the rotating shaft 13. The main shaft 1 and the rocker arm 4 are compactly set to provide more space for other structures. For example, there is enough space for the transmission structure 2 to set more transmission stages or for the main shaft 1 and / or the rotating component 23 to set a longer lever arm to achieve the transmission of greater torque. That is, the main shaft 1 with small torque outputs large torque to the rocker arm 4 through the transmission structure 2. In the scheme of using a single main spring 6 to replace the double-layer spring in the operating mechanism 300, the same mechanical performance state can be guaranteed, and the rotation operation of the main shaft 1 is more labor-saving.

[0062] In this embodiment, the rotation centers of the main shaft 1 and the rocker arm 4 coincide with the center of the mechanism housing 16, and the rotation center of the rotating shaft 13 and the trip unit 18 are located on both sides of the center of the mechanism housing 16.

[0063] In this embodiment, the transmission structure 2 further includes a first transmission disk 21, which is mounted on the main shaft 1 and rotates synchronously with it. The rotating component 23 is directly or indirectly connected to the first transmission disk 21 and the rocker arm 4. In this embodiment, the transmission disk 21 is separately mounted on the main shaft 1 through a mounting hole provided with the main shaft. Alternatively, the transmission disk 21 can be integrally mounted with the main shaft 1. By setting the synchronously rotating first transmission disk 21, the lever arm of the main shaft 1 is increased, allowing for the output of a large torque without increasing the number of transmission stages.

[0064] Furthermore, the rotating component 23 is indirectly connected to the first transmission disk 21 via the first transmission link 22, and the first transmission link 22 is connected to both the first transmission disk 21 and the rotating component 23. The rotating component 23 is indirectly connected to the rocker arm 4 via the second transmission link 24, and the second transmission link 24 is connected to both the rotating component 23 and the rocker arm 4. When the main shaft 1 is driven by an external force to rotate around the axis o1-o1, the first transmission disk 21 rotates synchronously with the main shaft 1 and drives the rotating component 23 to rotate around the axis o0 via the first transmission link 22. The rotating component 23 drives the rocker arm 4 to rotate around the axis o1-o1 via the second transmission link 24. The transmission structure 2 is equipped with multiple transmission stages, making the transmission between the main shaft 1 and the rocker arm 4 more stable, the transmission torque greater, and the operation less strenuous. In this embodiment, the rotating component 23 is indirectly connected to the transmission disk 21 via the first transmission link 22. Alternatively, the rotating component 23 can be indirectly connected to the transmission disk 21 via two or more transmission links, or it can be directly connected to the transmission disk 21. In this embodiment, the rotating component 23 is indirectly connected to the rocker arm 4 via the second transmission link 24. Alternatively, the rotating component 23 can be indirectly connected to the rocker arm 4 via two or more transmission links, or it can be directly connected to the rocker arm 4.

[0065] Furthermore, the rotating component 23 has a disc-shaped structure and is arranged parallel to and spaced apart from the first transmission disc 21 along the axis oo. The rocker arm 4 is at least partially on the same plane as the rotating component 23. The first transmission link 22 and the second transmission link 24 are respectively located between the first transmission disc 21 and the rotating component 23 along the axis oo. One end of the first transmission link 22 is stacked and hinged on the first transmission disc 21, and the other end is stacked and hinged on the rotating component 23. One end of the second transmission link 24 is stacked and hinged on the rotating component 23, and the other end is stacked and hinged on the portion of the rocker arm 4 that is on the same plane as the rotating component 23. The rotating component 23 of the transmission structure 2 is spaced apart from the first transmission disk 21 and is arranged on the same plane as the rocker arm 4. The first transmission link 22, which is hinged between the rotating component 23 and the first transmission disk 21, is stacked between the rotating component 23 and the first transmission disk 21. The second transmission link 24, which is hinged between the rotating component 23 and the rocker arm 4, is stacked on the rotating component 23 and the rocker arm 4. The transmission structure 2 has a compact and reasonable layout, which allows the transmission structure 2 to set more transmission stages in a limited space to meet the needs of more transmission stages between the main shaft 1 and the rocker arm 4.

[0066] In this embodiment, the transmission rod 12 and the rotating component 23 of the linkage structure are coaxially arranged. The rotating component 23 is mounted on a common shaft 230 and rotates synchronously with the common shaft 230. The axis of the common shaft 230 is the axis oo. The common shaft 230 is rotatably connected to the main body support 500. The transmission rod 12 is rotatably connected to the common shaft 230, that is, the transmission rod 12 is rotatably sleeved on the common shaft 230 through the transmission rod mounting hole 127. Further, the rotating component 23 and the common shaft 230 are separately arranged. The rotating component 23 is sleeved on the common shaft 230 through a rotating component mounting hole 231 to achieve synchronous rotation with the common shaft 230. The rotating component mounting hole 231, the hinge point between the rotating component 23 and the first transmission link 22, and the hinge point between the rotating component 23 and the second transmission link 24 are distributed at the three vertices of a triangle. Of course, in other embodiments, the rotating component 23 and the common shaft 230 can also be integrally arranged.

[0067] In this embodiment, the point where the rotating component 23 is connected to the first transmission disk 21 serves as the first-stage transmission point, i.e., the hinge point between the first transmission disk 21 and the first transmission link 22 serves as the first-stage transmission point. The point where the rotating component 23 is connected to the rocker arm 4 serves as the last-stage transmission point, i.e., the hinge point between the rocker arm 4 and the second transmission link 24 serves as the last-stage transmission point. The first-stage and last-stage transmission points are located on both sides of the line connecting axis oo and axis o1-o1. The first-stage and last-stage transmission points of the transmission structure 2 are located on both sides of the line connecting the rotation center of the main shaft 1 and the rotating component 23, enabling the rotating component 23 to transmit greater torque to the main shaft 1 and the rocker arm 4.

[0068] Furthermore, the rocker arm 4 has a U-shaped structure, including a rocker arm beam 41, a first rocker arm leg 42, and a second rocker arm leg 43. The first rocker arm leg 42 and the second rocker arm leg 43 are respectively bent and connected to the rocker arm beam 41 and are spaced apart and opposite to each other in the axial direction oo. One end of the main spring 6 is connected to the rocker arm beam 41, and the other end is connected to the hinge of the first connecting rod 5 and the second connecting rod 10. The first rocker arm leg 42 of the rocker arm 4 is indirectly rotatably mounted on the first side plate 510 of the main body support 500 through the main shaft 1. The main shaft 1 is rotatably connected to the first side plate 510 of the main body support 500. The first rocker arm leg 42 of the rocker arm 4 is provided with a first rocker arm rotating part 421 that rotatably cooperates with the main shaft 1. The second rocker arm leg 43 of the rocker arm 4 is directly rotatably mounted on the second side plate 520 of the main body support 500. The second rocker arm leg 43 of the rocker arm 4 is provided with a second rocker arm rotating part 431 that rotatably connects with the second side plate 520. Furthermore, the first rocker arm leg 42 and the second rocker arm leg 43 are located on both sides of the main body support 500, that is, the first rocker arm leg 42 is located on the outside of the first side plate 510, and the second rocker arm leg 43 is located on the outside of the second side plate 520. The first rocker arm rotating part 421 and the second rocker arm rotating part 431 can be arc-shaped surfaces, round holes, or other structures; bearings can be sleeved on the part of the main shaft 1 that is used to rotate with the first rocker arm rotating part 421 to reduce the rotational friction between the main shaft 1 and the rocker arm 4.

[0069] like Figure 9 As shown, the mechanism body 400 of the operating mechanism 300 also includes a tripping assist structure 3 that is indirectly driven to cooperate with the main shaft 1. The tripping assist structure 3 includes an assisting part 311 that makes circular motion around the axis oo. That is, when the main shaft 1 is driven by an external force to rotate around the axis o1-o1, it simultaneously drives the tripping assist structure 3 to move, causing the assisting part 311 to make circular motion around the axis oo. In simple terms, when the main shaft 1 is driven by an external force to rotate, it simultaneously drives the assisting part 311 to make circular motion around the axis oo.

[0070] In this embodiment, the tripping assist structure 3 includes an assist turntable 31. The assist turntable 31 includes a turntable body 310 rotatably arranged around the axis oo and an assisting part 311 disposed on the turntable body 310. That is, the turntable body 310 is coaxially rotatably arranged with the rotating shaft 13 (the rotation center coincides). The assisting part 311 is disposed on one side of the rotation center of the turntable body 310 and performs circular motion around the axis oo. The rotating component 23 is coaxially arranged with the turntable body 310 and is respectively disposed on the common shaft 230. The shaft rotates synchronously, and the common shaft 230 is rotatably connected to the main body support 500. That is, the rotating part 23 rotates synchronously with the common shaft 230 and the turntable body 310. When the operating mechanism 300 opens the circuit breaker, the main shaft 1 rotates around the axis o1-o1, and drives the common shaft 230 to rotate around the axis oo through the rotating part 23. The assist turntable 31 rotates synchronously with the common shaft 230, so that the assist part 311 applies an assist force to the rotating shaft 13 to rotate it to the opening position before, during or after the main spring 6 begins to release energy. Specifically, the two ends of the common shaft 230 are rotatably connected to the first side plate 510 and the second side plate 520 of the main body bracket 500, and are arranged through the first side plate 510 and the second side plate 520. The transmission rod 12 is rotatably connected to the part of the common shaft 230 located between the first side plate 510 and the second side plate 520. The rotating part 23 is fixedly arranged on one end of the common shaft 230 located outside the first side plate 510. The turntable body 310 is fixedly arranged on the other end of the common shaft 230 located outside the second side plate 520.

[0071] The turntable body 310 and the assisting part 311 are separate structures, with the assisting part 311 being a shaft connected to the turntable body 310 at one end. Alternatively, the turntable body 310 and the assisting part 311 can be an integral structure, with one end of the assisting part 311 bent and connected to the edge of the turntable body 310.

[0072] Furthermore, such as Figure 3 and 8As shown, the tripping assist structure 3 also includes an assisting link 32, which is connected to the turntable body 310 and the rocker arm 4 respectively. The main shaft 1 can drive the rocker arm 4 to rotate sequentially through the rotating component 23, the common shaft 230, the assisting turntable 31, and the assisting link 32. That is, the rotating component 23, the common shaft 230, the assisting turntable 31, and the assisting link 32 are equivalent to another set of transmission structures 2. Furthermore, the two ends of the assisting link 32 are hinged to the turntable body 310 and the rocker arm 4 respectively. Specifically, the main shaft 1 is connected to the first rocker arm leg 42 of the rocker arm 4 through the transmission structure 2, and to the second rocker arm leg 43 of the rocker arm 4 through the tripping assist structure 3. That is, the main shaft 1 drives the rocker arm 4 to rotate simultaneously through the transmission structure 2 and the tripping assist structure 3. In this embodiment, the transmission structure 2 and the tripping assist structure 3 are disposed on both sides of the main body bracket 500 along the axial direction oo. The tripping assist structure 3 is located between the main body bracket 500 and the rotating shaft 13, that is, the tripping assist structure 3 is located between the side of the main body bracket 500 closest to the rotating shaft 13 and the mounting component 17. This simplifies the structure of the operating mechanism 300 and ensures the reliability and efficiency of the transmission between the main shaft 1 and the rocker arm 4.

[0073] In another embodiment, the mechanism body 400 is provided with two sets of transmission structures 2, which are respectively arranged on both sides of the first side plate 510 and the second side plate 520; the opening assist structure 3 is a structure that is set independently of the two sets of transmission structures 2, and the opening assist structure 3 does not need to be provided with the assist link 32.

[0074] Furthermore, such as Figure 10 As shown, the rotating shaft 13 includes a rotating shaft mating part; when the operating mechanism 300 opens, the assist part 311 abuts against the rotating shaft mating part when or after the main spring 6 begins to release energy. Specifically, the rotating shaft 13 has a disc-shaped structure, which includes a rotating shaft insertion hole 130 and a rotating shaft arc groove 131 provided on its side facing the mechanism body 400. The rotating shaft insertion hole 130 is used for the insertion of the drive shaft 11 of the mechanism body 400. The distance between the rotating shaft insertion hole 130 and the rotation center (i.e., the axis oo) of the rotating shaft 13 is greater than the distance between the rotating shaft arc groove 131 and the rotation center of the rotating shaft 13. One end of the assist part 311 is inserted into the rotating shaft arc groove 131. The assist part 311 can make circular motion in the rotating shaft arc groove 131 under the drive of the main shaft 1. One end of the rotating shaft arc groove 131 is provided with a rotating shaft stop surface 132 as a rotating shaft mating part. In other embodiments, the rotating shaft mating part can also be a stop provided on the side of the rotating shaft 13 facing the mechanism body 400. The shape of the stop is not specifically limited, as long as it can reliably cooperate with the assisting part 311.

[0075] Furthermore, such as Figure 8As shown, the mechanism body 400 also includes a tripping auxiliary spring 15, and the tripping buckle 7 is also provided with a tripping buckle hook spring. The tripping buckle hook spring and the end of the tripping buckle 7 that engages with the locking buckle 8 (this end is the tripping buckle hook end) are respectively located at both ends of the tripping buckle 7. The rotation center of the tripping buckle 7 is located between the tripping buckle hook spring and the tripping buckle hook end. One end of the tripping auxiliary spring 15 is connected to the tripping buckle hook spring and the other end is connected to the body bracket 500. It applies a force to the tripping buckle 7 to make it rotate toward the release position. The tripping buckle 7 drives the rotating shaft 13 to rotate toward the tripping position through the first connecting rod 5, the second connecting rod 10, the transmission rod 12 and the transmission shaft 11 connected in sequence. The tripping auxiliary spring 15 helps to speed up the rotation of the rotating shaft 13 toward the tripping position and improves the tripping efficiency.

[0076] refer to Figure 9 The second embodiment of the operating mechanism 300 (not shown in the figure) differs from the first embodiment in that the main body support 500 does not have a support notch 521. The first side plate 510 and the second side plate 520 of the main body support 500 are both provided with transmission shaft guide holes. The transmission shaft 11 is inserted into the transmission shaft guide hole. The shape of the transmission shaft guide hole matches the movement trajectory of the transmission shaft 11. The transmission shaft guide hole is arc-shaped. The two ends of the arc shape of the transmission shaft guide hole are respectively limited to the transmission shaft 11, which is used to limit the rotating shaft 13 to the closed position and the open position.

[0077] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0078] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. An operating mechanism comprising a mechanism body (400) and a rotating shaft (13) for transmission connection with a moving contact mechanism (200) of a switching device, the rotating shaft (13) being rotatably disposed about an axis oo and located on one side of the mechanism body (400) in the direction of the axis oo, the mechanism body (400) comprising a body support (500), a rocker arm (4) and a main shaft (1) respectively rotatably disposed on the body support (500), a transmission structure (2) respectively transmissionally connected to the main shaft (1) and the rocker arm (4), and a drive mechanism (2) disposed on the body support (500) and transmissionally connected to the rotating shaft (13). The operating mechanism includes a linkage structure and a main spring (6) connected at both ends to the rocker arm (4) and the linkage structure respectively, which provides the driving force for opening and closing the circuit breaker; when the operating mechanism opens or closes the circuit breaker, the main shaft (1) is driven to rotate by an external force, and the main shaft (1) drives the rocker arm (4) to rotate through the transmission structure (2). After the rocker arm (4) drives the main spring (6) to move to the maximum energy storage position, the main shaft (1) continues to rotate and drives the main spring (6) past the maximum energy storage position through the rocker arm (4). Then, the main spring (6) begins to release energy and drives the rotating shaft (13) to rotate towards the opening or closing position through the linkage structure; characterized in that: The rocker arm (4) and the main shaft (1) are respectively arranged to rotate around the axis o1-o1, and the axis o1-o1 is parallel to and spaced apart from the axis oo; The transmission structure (2) includes a rotating component (23) that is rotatably mounted on the main body support (500) around the axis oo. When the main shaft (1) rotates around the axis o1-o1, it drives the rotating component (23) to rotate around the axis oo, thereby driving the rocker arm (4) to rotate around the axis o1-o1.

2. The operating mechanism according to claim 1, characterized in that: The transmission structure (2) further includes a first transmission disk (21), which is mounted on the main shaft (1) and rotates synchronously with it. The rotating component (23) is directly or indirectly connected to the first transmission disk (21) and the rocker arm (4).

3. The operating mechanism according to claim 2, characterized in that: The rotating component (23) is indirectly connected to the first transmission disk (21) via the first transmission link (22), and the first transmission link (22) is connected to the first transmission disk (21) and the rotating component (23) respectively. The rotating component (23) is indirectly connected to the rocker arm (4) via the second transmission link (24), and the second transmission link (24) is connected to the rotating component (23) and the rocker arm (4) respectively.

4. The operating mechanism according to claim 3, characterized in that: The rotating component (23) is a disc-shaped structure and is arranged parallel to and spaced apart from the first transmission disc (21) along the axis oo direction. The rocker arm (4) is at least partially on the same plane as the rotating component (23). The first transmission link (22) and the second transmission link (24) are respectively located between the first transmission disc (21) and the rotating component (23) along the axis oo direction. One end of the first transmission link (22) is stacked and hinged on the first transmission disc (21), and the other end is stacked and hinged on the rotating component (23). One end of the second transmission link (24) is stacked and hinged on the rotating component (23), and the other end is stacked and hinged on the part of the rocker arm (4) and the rotating component (23) on the same plane.

5. The operating mechanism according to claim 2, characterized in that: The point where the rotating part (23) is connected to the first transmission disk (21) serves as the first-stage transmission point, and the point where the rotating part (23) is connected to the rocker arm (4) serves as the last-stage transmission point. The first-stage transmission point and the last-stage transmission point are located on both sides of the line connecting the axis oo and the axis o1-o1.

6. The operating mechanism according to claim 1, characterized in that: The rocker arm (4) is rotatably mounted on the main body support (500) at least indirectly via the main shaft (1). The main shaft (1) is rotatably connected to the main body support (500). The rocker arm (4) is provided with a first rocker arm rotating part (421) that rotatably cooperates with the main shaft (1).

7. The operating mechanism according to claim 1, characterized in that: The linkage structure includes a jump buckle (7) and a lock buckle (8) that are rotatably mounted on the main body bracket (500) and are engaged with a snap fastener, a first link (5), a second link (10), a transmission rod (12), and a transmission shaft (11); the first link (5) is hinged to the jump buckle (7) and the second link (10) respectively, one end of the main spring (6) is connected to the rocker arm (4) and the other end is connected to the hinge of the first link (5) and the second link (10), the second link (10) is also hinged to the transmission rod (12) and drives it to rotate around the axis oo, the transmission shaft (11) is mounted on the transmission rod (12) and is spaced parallel to the axis oo, and one end of the transmission shaft (11) is connected to the rotating shaft (13) for transmission. The transmission rod (12) and the rotating component (23) are coaxially arranged. The rotating component (23) is arranged on the common shaft (230) and rotates synchronously with the common shaft (230). The axis of the common shaft (230) is the axis oo. The common shaft (230) is rotatably connected to the main body support (500). The transmission rod (12) is rotatably connected to the common shaft (230).

8. The operating mechanism according to claim 1, characterized in that: The operating mechanism body (400) further includes a tripping assist structure (3) that indirectly drives the main shaft (1). The tripping assist structure (3) includes an assisting turntable (31). The assisting turntable (31) includes a turntable body (310) that rotates around the axis oo and an assisting part (311) disposed on the turntable body (310). The rotating component (23) and the turntable body (310) are coaxially disposed and respectively disposed on a common shaft (230) and rotate synchronously with the common shaft (230). When the operating mechanism (300) opens the circuit, the main shaft (1) drives the common shaft (230) to rotate through the rotating part (23), and the auxiliary turntable (31) rotates synchronously with the common shaft (230), so that the auxiliary part (311) applies an opening auxiliary force to the rotating shaft (13) before, during, or after the main spring (6) begins to release energy, causing it to rotate toward the opening position.

9. The operating mechanism according to claim 8, characterized in that: The tripping assist structure (3) also includes an assisting link (32), which is connected to the turntable body (310) and the rocker arm (4) respectively; the main shaft (1) drives the rocker arm (4) to rotate through the tripping assist structure (3) and the transmission structure (2).

10. The operating mechanism according to claim 8, characterized in that: The transmission structure (2) and the tripping assist structure (3) are arranged on both sides of the main body support (500) in the axial direction oo, and the tripping assist structure (3) is located between the main body support (500) and the rotating shaft (13).

11. A switching device, characterized in that: The switching device includes the operating mechanism as described in any one of claims 1-10.

12. The switching device according to claim 11, characterized in that: The switchgear includes a switch body (100), which includes at least one set of switch units. The switch units and the operating mechanism (300) are stacked together along the axis oo direction. The rotating shaft (13) is coaxially rotatably connected to the moving contact mechanism (200) of the switch unit.

13. The switching device according to claim 11, characterized in that: It also includes a trip unit (18), which is installed inside the mechanism housing (16) of the operating mechanism (300), with the rotation center of the shaft (13) of the operating mechanism (300) and the trip unit (18) located on opposite sides of the center of the mechanism housing (16).

Images