CN210489569U

CN210489569U - Electric operating mechanism and circuit breaker

Info

Publication number: CN210489569U
Application number: CN201921773745.6U
Authority: CN
Inventors: 杨园; 龚祚勇; 黄晓梦
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-05-08
Anticipated expiration: 2029-10-21

Abstract

The utility model provides an electric operating mechanism and circuit breaker relates to circuit breaker technical field. The electric operating mechanism is used for connecting a switching-on and switching-off structure and comprises a driving device, a transmission assembly, a shifting assembly and a linkage structure. The driving device is in transmission connection with the transmission assembly. The linkage structure is used for connecting the switching-on and switching-off structure and driving the linkage structure to switch on or switch off. The toggle assembly is connected with the transmission assembly. The transmission component can drive the shifting component, so that the shifting component is abutted against the linkage structure and drives the linkage structure. Or the transmission assembly drives the shifting arm to be separated from the linkage structure so as to avoid the automatic tripping of the closing and opening brake structure. The utility model also provides a circuit breaker, it has adopted foretell electric operating mechanism. The utility model provides an electric operating mechanism and circuit breaker can solve the technical defect that prior art can not automatic divide-shut brake.

Description

Electric operating mechanism and circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field particularly, relates to an electric operating mechanism and circuit breaker.

Background

Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.

The circuit breaker is divided into: the plug-in circuit breaker has plug-in, fixed and drawer types, the use of the plug-in circuit breaker can effectively improve the safety of the use industry of electrical equipment, and along with the wide application of the plug-in circuit breaker in the industries of communication and the like, the characteristic of timely feedback in the communication industry needs to have remote control capability on products, so that the plug-in miniature circuit breaker with the electric operating mechanism is designed to have an automatic switching-on and switching-off function.

The electric operating mechanism of the existing miniature circuit breaker capable of being remotely operated is of a splicing type, occupies a large space and is not beneficial to wire arrangement, and the existing plug-in miniature circuit breaker does not have the electric operating mechanism and cannot be directly spliced and borrowed, so that the technical defect that automatic opening and closing can not be realized is overcome.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric operating mechanism, for example, it can solve the technical defect that prior art can not automatic divide-shut brake.

The utility model discloses an aim at still include, for example, provide a circuit breaker, it can solve the technical defect that prior art can not automatic divide-shut brake.

The embodiment of the utility model discloses a can realize like this:

an embodiment of the utility model provides an electric operating mechanism for connect the switching on and off structure, electric operating mechanism includes drive arrangement, drive assembly, stirs subassembly and linkage structure.

The driving device is in transmission connection with the transmission assembly.

The linkage structure is used for connecting the switching-on and switching-off structure and driving the linkage structure to switch on or switch off.

The toggle assembly is connected to the transmission assembly.

The transmission assembly can drive the shifting assembly, so that the shifting assembly is abutted against the linkage structure and drives the linkage structure. Or the transmission assembly drives the shifting arm to be separated from the linkage structure so as to avoid the automatic tripping of the switching-on and switching-off structure.

Optionally, the toggle assembly includes a swivel, a shaft, and a toggle arm, and the swivel and the linkage structure are both rotatably connected to the shaft.

The rotating body is in transmission connection with the transmission assembly, and the transmission assembly can drive the rotating body to rotate.

The shifting arm is connected with the rotating body, and the rotating body can drive the shifting arm to abut against the linkage structure and push the linkage structure to rotate. Or the rotating body can drive the shifting arm to be separated from the linkage structure.

Optionally, the middle part of the rotating body is convexly provided with a sleeve, the sleeve is sleeved on the rotating shaft, the shifting arm extends out from the periphery of the sleeve, and the shifting arm extends to the plane of the linkage structure.

Optionally, the shifting arm comprises a connecting part and a shifting part, the connecting part is convexly arranged on the outer periphery of the sleeve and extends along the radial direction of the sleeve, the shifting part is convexly arranged on the end part of the connecting part and extends parallel to the axis of the sleeve, and the shifting part extends to the plane of the linkage structure.

Optionally, the toggle assembly further comprises a position sensor, the position sensor is mounted to the toggle arm, and the position sensor is used for detecting the position of the toggle arm.

Optionally, the linkage structure comprises a linkage turntable and a connecting shaft.

The linkage turntable is rotatably connected to the rotating shaft, and the shifting arm can be abutted against the linkage turntable and drives the linkage turntable to rotate.

One end of the connecting shaft is connected with the linkage turntable, and the other end of the connecting shaft is used for connecting the switching-on and switching-off structure.

Optionally, the linkage turntable has a first abutting surface and a second abutting surface arranged along a radial direction of a rotation path thereof.

The shifting arm can abut against the first abutting surface and push the linkage turntable to rotate along a first direction, and the linkage turntable drives the connecting shaft to drive the switching-on/off structure to switch on.

The shifting arm can abut against the second abutting surface and push the linkage turntable to rotate along a second direction, and the linkage turntable drives the connecting shaft to drive the brake closing and opening structure to open the brake.

The shifting arm can be separated from the linkage turntable and is arranged at an interval with the first abutting surface so as to avoid the automatic tripping of the switching-on and switching-off structure.

Optionally, the linkage turntable is fan-shaped.

Optionally, the outer edge of the linkage turntable is further convexly provided with a limiting portion, the limiting portion is provided with a third abutting surface facing the first direction, and the third abutting surface is used for abutting against the limiting structure and limiting the linkage turntable to rotate along the first direction.

A circuit breaker includes an electrically operated mechanism. The electric operating mechanism is used for connecting the switching-on and switching-off structure and comprises a driving device, a transmission assembly, a shifting assembly and a linkage structure.

The toggle assembly is connected to the transmission assembly.

The utility model discloses electric operating mechanism includes for prior art's beneficial effect, for example:

the utility model provides an electric operating mechanism can provide power through drive arrangement to through drive assembly with power transmission to stirring the subassembly, and drive linkage structure through stirring the subassembly, just can drive closing and separating brake structure combined floodgate or separating brake through linkage structure, and then realize closing and separating brake structure's initiative combined floodgate and initiative separating brake. In addition, the driving device can drive the transmission assembly and drive the shifting assembly to be separated from the linkage structure, and the shifting assembly is prevented from influencing the automatic tripping of the switching-on and switching-off structure and then is driven to move. Namely, the active switching-on and active switching-off of the switching-on and switching-off structure can be realized through the electric operating mechanism, the automatic tripping of the switching-on and switching-off structure is not influenced, the efficient switching-on and switching-off function is provided, and the stability of the automatic tripping of the circuit breaker can be ensured.

The utility model also provides a circuit breaker, it has adopted foretell electric operating mechanism to its beneficial effect for prior art is the same with the above-mentioned electric operating mechanism who provides for prior art's beneficial effect, no longer gives unnecessary details here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a local first viewing angle of the electric operating mechanism provided in the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second view angle of a portion of the electric operating mechanism provided in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a third viewing angle of a portion of the electric operating mechanism provided in the embodiment of the present invention;

fig. 5 is a schematic structural view of the first state of the toggle arm and the linkage turntable provided in the embodiment of the present invention;

fig. 6 is a schematic structural view of the second state of the toggle arm and the linkage turntable provided in the embodiment of the present invention;

fig. 7 is a schematic structural view of the third state of the toggle arm and the linkage turntable provided in the embodiment of the present invention;

fig. 8 is a schematic structural view of a linkage turntable provided in an embodiment of the present invention;

fig. 9 is a schematic structural view of a shifting arm and a swivel provided in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a limiting structure provided in an embodiment of the present invention.

Icon: 10-a circuit breaker; 100-a housing; 110-a cavity; 200-an electric operating mechanism; 210-a drive device; 220-a transmission assembly; 221-a second gear; 222-a worm gear; 223-a worm; 240-a toggle assembly; 241-a shifting arm; 2411-a first pushing surface; 2412-a second pushing surface; 2413-installing grooves; 2414-a linker; 2415-a toggle part; 242-a swivel; 2421-sleeve; 243-rotating shaft; 230-a linkage structure; 231-a linkage dial; 2311-a first holding surface; 2312-a second holding surface; 2313-mounting holes; 2314-a limiting part; 2315-third holding surface; 232-connecting shaft; 300-switching on and off structure; 500-a control module; 600-a limit structure; 610-an installation table; 620-spacing arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, the present embodiment provides a circuit breaker 10 for circuit protection to prevent the circuit from being damaged by faults such as voltage loss, undervoltage, overload, and short circuit. Moreover, the circuit breaker 10 can improve the technical problems of large occupied space and inconvenient wire arrangement.

The circuit breaker 10 includes a housing 100, a control module 500, an electric operating mechanism 200, and an opening/closing structure 300. The housing 100 is provided with a cavity 110 for mounting the control module 500, the electric operating mechanism 200 and the opening and closing structure 300, i.e. the housing 100 can provide a bearing function for the control module 500, the electric operating mechanism 200 and the opening and closing structure 300. Can be through setting up control module 500, electric operating mechanism 200 and switching on and off brake structure 300 inside same cavity 110, can realize control module 500, electric operating mechanism 200 and the purpose that switching on and off brake structure 300 occupation space is few to make control module 500, electric operating mechanism 200 and switching on and off brake structure 300 integrate the degree height, can realize improving the purpose of circuit breaker 10 wholeness ability.

It should be noted that the control module 500 is electrically connected to the electric operating mechanism 200, and the control module 500 is used for controlling the operation of the electric operating mechanism 200. The electric operating mechanism 200 is connected to the switching structure 300, and the electric operating mechanism 200 is used for driving the switching structure 300 to switch on or switch off.

Further, referring to fig. 1, fig. 2, fig. 3 and fig. 4, the electric operating mechanism 200 includes a driving device 210, a transmission assembly 220, a linkage structure 230 and a toggle assembly 240. Wherein, the driving device 210, the transmission assembly 220, the linkage structure 230 and the toggle assembly 240 are all installed in the cavity 110, and the linkage structure 230 can move relative to the housing 100. The control module 500 is electrically connected to the driving device 210, so that the control module 500 can control the driving device 210 to operate. The driving device 210 is connected to the transmission assembly 220, so that the driving device 210 can drive the transmission assembly 220 to move when the operation is yes. The transmission assembly 220 is connected to the toggle assembly 240, and the toggle assembly 240 is connected to the linkage structure 230, so that the transmission assembly 220 drives the toggle assembly 240 under the driving action of the driving device 210, and the toggle assembly 240 drives the linkage structure 230 to move relative to the housing 100. In addition, the linkage structure 230 is connected to the switching-on/off structure 300, so that the linkage structure 230 can drive the switching-on/off structure 300 to switch on or off when moving relative to the housing 100.

Further, in this embodiment, the linking structure 230 includes a linking turntable 231, the linking turntable 231 is rotatably connected to the cavity 110, and the linking turntable 231 is connected to the switching-on/off structure 300, so that the linking turntable 231 can rotate along a first direction and drive the switching-on/off structure 300 to switch on, or the linking turntable 231 can rotate along a second direction and drive the switching-on/off structure 300 to switch off. Wherein the first direction and the second direction are opposite. In addition, the linkage turntable 231 can also rotate along the second direction under the action of the opening and closing structure 300 when the opening and closing structure 300 is automatically released.

In the present embodiment, the linkage turntable 231 is connected to the opening/closing mechanism 300 indirectly. Optionally, the linkage structure 230 may further include a connecting shaft 232, one end of the connecting shaft 232 is connected to the linkage turntable 231, and the other end of the connecting shaft 232 is connected to the switching-on/off structure 300, so that the linkage turntable 231 can drive the connecting shaft 232 while rotating, and the switching-on/off structure 300 is driven by the connecting shaft 232 to achieve the purpose of switching on and off. It should be understood that in other embodiments, the transmission between the linking rotary disc 231 and the opening and closing structure 300 can also be realized by directly connecting the linking rotary disc 231 to the opening and closing structure 300, for example, a connecting rod (not shown) extends from the linking rotary disc 231, and an end of the connecting rod is connected to the opening and closing structure 300, and the connecting rod and the linking rotary disc 231 are integrally formed. Optionally, the linking turntable 231 is provided with a mounting hole 2313, and a distance is provided between the mounting hole 2313 and the rotation center of the linking turntable 231. One end of the connecting shaft 232 is rotatably connected to the mounting hole 2313, and the other end is connected to the opening and closing structure 300.

In addition, the toggle assembly 240 includes a toggle arm 241, and in the case that the driving device 210 is operated, the driving device 210 can drive the transmission assembly 220 to move, and the transmission assembly 220 can transmit power to the toggle assembly 240, so that the toggle arm 241 moves relative to the housing 100. The shifting arm 241 can be pressed against the linkage turntable 231 and pushes the linkage turntable 231 to rotate under the driving of the driving device 210, or can be separated from the linkage turntable 231 under the driving action of the driving device 210.

In this embodiment, under the driving action of the driving device 210, the dialing arm 241 can abut against the linkage turntable 231 and drive the linkage turntable 231 to rotate, so that the linkage turntable 231 can rotate along the first direction or the second direction, or the driving device 210 can drive the dialing arm 241 to disengage from the linkage turntable 231, so that when the switching-on/off structure 300 is automatically tripped, the dialing arm 241 can be prevented from influencing the rotation of the linkage turntable 231, and the switching-on/off structure 300 can be ensured to effectively perform the function of automatic tripping.

It should be noted that the rotation of the linking dial 231 in the first direction refers to that, at the viewing angle as shown in fig. 5, the linking dial 231 rotates in the counterclockwise direction, and the arrow in fig. 5 refers to the first direction; in addition, the rotation of the link dial 231 in the second direction means that the link dial 231 rotates in the clockwise direction when viewed as in fig. 6, and the arrow in fig. 6 indicates that the direction is the second direction.

Further, in the present embodiment, the link turntable 231 has a first abutting surface 2311 and a second abutting surface 2312 arranged in a radial direction of a rotation path thereof. The poking arm 241 can abut against the first abutting surface 2311 and push the linkage turntable 231 to rotate along the first direction under the driving action of the driving device 210, or the poking arm 241 can abut against the second abutting surface 2312 and push the linkage turntable 231 to rotate along the second direction under the driving action of the driving device 210, or the poking arm 241 can be separated from the linkage turntable 231 and arranged at an interval with the first abutting surface 2311 under the driving action of the driving device 210. It should be noted that, the arrangement of the dialing arm 241 and the first abutting surface 2311 at an interval means that an arc-shaped space is formed between the dialing arm 241 and the first abutting surface 2311, and the dialing arm 241 and the linkage turntable 231 can move relatively to make the dialing arm 241 approach the first abutting surface 2311, so as to reduce the radian of the arc-shaped space. Moreover, the arc-shaped space can meet the requirement that the rotation of the linkage turntable 231 is not influenced by the shifting arm 241 when the switching-on/off structure 300 is automatically tripped, so that the switching-on/off structure 300 can effectively realize the automatic tripping function.

As shown in fig. 5, the shifting arm 241 can abut against the first abutting surface 2311 and push the linkage turntable 231 to rotate along the first direction, and the linkage turntable 231 drives the switching-on/off structure 300 to implement a switching-on function, at this time, the driving device 210 drives the shifting arm 241 to drive the linkage turntable 231 to implement an active switching-on function of the switching-on/off structure 300. Similarly, as shown in fig. 6, the shifting arm 241 can abut against the second abutting surface 2312 and push the linkage turntable 231 to rotate along the second direction, and the switching-on/off structure 300 is driven by the linkage turntable 231 to realize the switching-off function, and at this time, the driving device 210 drives the shifting arm 241 to drive the linkage turntable 231 to realize the active switching-on/off function of the switching-on/off structure 300. In addition, as shown in fig. 7, the shifting arm 241 can be disengaged from the linking dial 231 by the driving of the driving device 210, and the rotation of the linking dial 231 when the switching structure 300 is automatically tripped cannot be affected, so that the function that the shifting arm 241 is driven by the driving device 210 to be parked at a proper position and the switching structure 300 is not affected when the switching structure 300 is automatically tripped is realized. In summary, the control module 500 controls the driving device 210 to drive the arm 241, so as to facilitate the remote operation of the circuit breaker 10.

Alternatively, referring to fig. 2 and 8, in the present embodiment, the linking rotary disc 231 has a fan shape. The circle center of the sector coincides with the rotation center of the linkage turntable 231, and the plane where the first abutting surface 2311 is located and the plane where the second abutting surface 2312 is located both pass through the rotation center of the linkage turntable 231. Through the arrangement mode, an arc-shaped space is formed between the first abutting surface 2311 and the second abutting surface 2312, and the shifting arm 241 is arranged in the arc-shaped space. It should be noted that, the shifting arm 241 can be moved to a proper position, and a sufficient arc-shaped space is formed between the shifting arm 241 and the first abutting surface 2311, so that the shifting arm 241 is prevented from influencing the rotation of the linkage turntable 231 when the switching-on/off structure 300 is automatically tripped, and the switching-on/off structure 300 is further ensured to effectively realize the automatic tripping function. Optionally, in this embodiment, the radian of the linkage turntable 231 is less than 180 degrees, so that the radian of a radian space formed between the first abutting surface 2311 and the second abutting surface 2312 of the linkage turntable 231 is greater than 180 degrees, and the radian space is large enough, so that the shifting arm 241 can be moved to a proper position after being away from the first abutting surface 2311, so that an angle between the shifting arm 241 and the first abutting surface 2311 is greater than a rotating angle of the linkage turntable 231 during automatic tripping, and the linkage turntable 231 can be ensured to effectively implement an automatic tripping function. It should be understood that in other embodiments, the radian of the linkage turntable 231 may also be set to be greater than or equal to 180 degrees, and it is only necessary that the angle formed by the dialing arm 241 and the first abutting surface 2311 after the dialing arm is away from the first abutting surface 2311 is greater than the angle that the linkage turntable 231 needs to rotate when the linkage turntable 231 is automatically tripped.

It should be understood that, in other embodiments, the arrangement manner of the linking dial 231 and the dialing arm 241 may also be different, for example, the linking dial 231 is a circular disk, an arc-shaped sliding slot (not shown) is formed in the linking dial 231, inner side walls at two ends of the sliding slot are respectively a first abutting surface 2311 and a second abutting surface 2312, the dialing arm 241 is arranged inside the sliding slot, and the dialing arm 241 can move in the sliding slot and selectively abut against the first abutting surface 2311 or the second abutting surface 2312, or the dialing arm 241 moves to the middle of the sliding slot, so that the dialing arm 241 does not affect the rotation of the linking dial 231 when the opening and closing structure 300 is automatically tripped.

Please refer to fig. 2 and fig. 9 in combination, in this embodiment, the toggle assembly 240 may further include a rotating body 242 and a rotating shaft 243. The rotating shaft 243 is connected to the cavity 110, the rotating body 242 and the linkage turntable 231 are both rotatably connected to the rotating shaft 243, the dialing arm 241 is connected to the rotating body 242, and the transmission assembly 220 is in transmission connection with the rotating body 242. The driving device 210 can drive the transmission assembly 220 to drive the rotating body 242 to rotate, and the rotating body 242 drives the shifting arm 241 to rotate, so that the shifting arm 241 can selectively abut against the linkage turntable 231 or disengage from the linkage turntable 231. It should be understood that in other embodiments, the swivel 242 and the linkage turntable 231 may be disposed on different rotational axes.

Further, in the present embodiment, a sleeve 2421 is further protruded from the middle of the rotator 242, the sleeve 2421 is sleeved on the rotating shaft 243, and the dial arm 241 is protruded from the outer periphery of the sleeve 2421 and extends to the plane where the linkage turntable 231 is located. In the present embodiment, the dial arm 241 includes a connection portion 2414 and a dial portion 2415, and the connection portion 2414 is protruded from the outer periphery of the sleeve 2421 and extends in the radial direction of the sleeve 2421. The toggle part 2415 is protruded from the end of the connection part 2414 and extends parallel to the axis of the sleeve 2421, so that the toggle part 2415 extends to the plane of the linkage turntable 231, and the toggle part 2415 can abut against the linkage turntable 231 and push the linkage turntable 231 to rotate.

In addition, in the present embodiment, the transmission assembly 220 includes a second gear 221, the second gear 221 is in transmission connection with the driving device 210, and the rotating body 242 is in transmission connection with the second gear 221. It should be noted that, in this embodiment, the outer periphery of the rotator 242 is provided with gear teeth adapted to the second gear 221, so that the rotator 242 can be in transmission connection with the second gear 221. Moreover, in the present embodiment, the second gear 221 adopts a duplicate gear, so that the second gear 221 and the rotator 242 can jointly form a speed reducer, and further, the output speed of the driving device 210 can be reduced after being transmitted through the second gear 221 and the rotator 242, so as to ensure the controllability of the driving device 210 driving the dial arm 241 through the transmission assembly 220. It should be understood that in other embodiments, the provision of the second gear 221 may be eliminated. In addition, the output end of the driving device 210 is provided with a worm 223, the transmission assembly 220 may further include a worm wheel 222 adapted to the worm 223, the worm wheel 222 is in transmission connection with the worm 223, and the second gear 221 is in transmission connection with the worm wheel 222, so as to perform power transmission, thereby realizing rotation controllability of the linkage turntable 231.

It should be noted that, in other embodiments, the driving device 210 and the transmission assembly 220 may also be configured as an integrated gear box, that is, the driving device 210 and the transmission assembly 220 are configured as a whole, where the configuration of the gear box is the prior art, and is not described herein again. Through the gear box with stir subassembly 240 transmission connection to stir subassembly 240 and provide power through the gear box, can make to stir subassembly 240 and drive linkage carousel 231 and rotate.

In addition, referring to fig. 1, fig. 5 and fig. 10, in the embodiment, the circuit breaker 10 further includes a limiting structure 600, and the limiting structure 600 is installed in the cavity 110. In addition, the outer edge of the linkage turntable 231 is further convexly provided with a limiting portion 2314, the linkage turntable 231 can rotate along the first direction, and the limiting portion 2314 is abutted against the limiting structure 600, so that the linkage turntable 231 is limited to rotate along the first direction by the limiting structure 600. When the linkage turntable 231 rotates along the first direction and drives the switching-on/off structure 300 to switch on, the limiting portion 2314 abuts against the limiting structure 600, so as to avoid the situation that the linkage turntable 231 rotates at an excessively large angle to drive the switching-on/off structure 300 to switch off. In other words, the linkage turntable 231 rotates along the first direction to have a limit position, when the linkage turntable 231 is located at the limit position, the limit portion 2314 abuts against the limit structure 600, and at this time, the linkage turntable 231 drives the switching-on/off structure 300 to implement a switching-on function. Under the driving action of the driving device 210, the shifting arm 241 can push the linkage turntable 231 and make the switching-on/off structure 300 realize the stability of the switching-on function.

Further, the third abutting surface 2315 is arranged on the limiting portion 2314, the third abutting surface 2315 is arranged towards the first direction, and therefore when the linkage turntable 231 rotates along the first direction, the linkage turntable 231 can abut against the limiting structure 600 through the third abutting surface 2315, the purpose that the limiting portion 2314 abuts against the limiting structure 600 is achieved, and the limiting structure 600 stops the linkage turntable 231 from rotating along the first direction. The third abutting surface 2315 faces the first direction, and when the link dial 231 rotates in the first direction, the link dial 231 can be regarded as rotating in the direction in which the third abutting surface 2315 faces.

In this embodiment, the limiting structure 600 includes a mounting platform 610 and a limiting arm 620, the mounting platform 610 is mounted in the cavity 110, the limiting arm 620 extends toward the linking rotation disc 231 on the mounting platform 610, and the limiting arm 620 is disposed close to the outer edge of the linking rotation disc 231, so that the limiting arm 620 can abut against the limiting portion 2314 to limit the rotation of the linking rotation disc 231 in the first direction.

Further, in the present embodiment, the dial arm 241 has a first pushing surface 2411 and a second pushing surface 2412 which are oppositely arranged. The shifting arm 241 can rotate along the first direction under the driving action of the driving device 210 and make the first pushing surface 2411 abut against the first abutting surface 2311, and under the continuous driving action of the driving device 210, the shifting arm 241 can push the linkage turntable 231 to rotate along the first direction; or, the toggle arm 241 can rotate in the second direction under the driving action of the driving device 210 and make the second pushing surface 2412 abut against the second abutting surface 2312, and under the continuous driving action of the driving device 210, the toggle arm 241 can push the linkage device to rotate in the second direction; or, the shifting arm 241 can be disengaged from the linkage turntable 231 under the driving action of the driving device 210, and an arc-shaped space is formed between the first pushing surface 2411 and the first abutting surface 2311, so as to prevent the shifting arm 241 from influencing the rotation of the linkage turntable 231 when the opening and closing mechanism 300 is automatically tripped. It should be noted that, in this embodiment, the cross section of the dial arm 241 on the plane where the rotation plane is located is substantially in a sector shape, so that the dial arm 241 can stably attach the first pushing surface 2411 and the first abutting surface 2311 after rotating, or can stably attach the second pushing surface 2412 and the second abutting surface 2312.

In addition, in this embodiment, the circuit breaker 10 further includes a position sensor (not shown), the position sensor is mounted on the dial arm 241 and is in communication connection with the control module 500, the position sensor is configured to detect a position of the dial arm 241 and generate position information, the position sensor is further configured to send the position information to the control module 500, and the control module 500 can be configured to control the driving device 210 to operate according to the position information, so that it can be ensured that the driving device 210 drives the dial arm 241 to a specified position, and accuracy of control over the dial arm 241 can be improved. The position of the dialing arm 241 can be detected by the position sensor, so that the driving device 210 drives the dialing arm 241 to a specified position and the dialing arm 241 drives the linkage turntable 231 to switch on and switch off the switching-on and switching-off structure 300, and the dialing arm 241 can be placed at a proper position, thereby preventing the dialing arm 241 from influencing the rotation of the linkage turntable 231 when the switching-on and switching-off structure 300 is automatically tripped.

Further, the dial arm 241 is provided with an installation groove 2413, the installation groove 2413 is disposed on an upper side surface of the dial arm 241, the upper side surface is located between the first pushing surface 2411 and the second pushing surface 2412, and the upper side surface is located on a side of the dial arm 241 far away from the rotator 242. The position sensor is disposed inside the mounting groove 2413 to ensure stable mounting of the position sensor and ensure the position accuracy of the shift arm 241 detected by the position sensor.

In summary, the circuit breaker 10 and the electric operating mechanism 200 provided in this embodiment can provide power through the driving device 210, transmit the power to the toggle assembly 240 through the transmission assembly 220, and drive the linkage structure 230 through the toggle assembly 240, so that the linkage structure 230 can drive the switching-on/off structure 300 to switch on or switch off, thereby realizing active switching-on and active switching-off of the switching-on/off structure 300. In addition, the driving device 210 can drive the transmission assembly 220 and drive the toggle assembly 240 to disengage from the linkage structure 230, so that the linkage structure 230 is prevented from moving when the toggle assembly 240 affects the automatic tripping of the switching on/off structure 300. That is, the active switching-on and active switching-off of the switching-on/off structure 300 can be realized through the electric operating mechanism 200, the automatic tripping of the switching-on/off structure 300 is not affected, a high-efficiency switching-on/off function is provided, and the stability of the automatic tripping of the circuit breaker 10 can be ensured.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electric operating mechanism is used for connecting a switching-on and switching-off structure and is characterized by comprising a driving device, a transmission assembly, a shifting assembly and a linkage structure;

the driving device is in transmission connection with the transmission assembly;

the linkage structure is used for connecting the switching-on and switching-off structure and driving the linkage structure to switch on or switch off;

the toggle assembly is connected with the transmission assembly;

the transmission assembly can drive the shifting assembly to enable the shifting assembly to abut against the linkage structure and drive the linkage structure; or the transmission assembly drives the shifting assembly to be separated from the linkage structure so as to avoid the automatic tripping of the switching-on and switching-off structure.

2. The mechanism of claim 1, wherein the toggle assembly includes a swivel, a shaft, and a toggle arm, the swivel and the linkage structure each being rotatably coupled to the shaft;

the rotating body is in transmission connection with the transmission assembly, and the transmission assembly can drive the rotating body to rotate;

the shifting arm is connected with the rotating body, and the rotating body can drive the shifting arm to abut against the linkage structure and push the linkage structure to rotate; or the rotating body can drive the shifting arm to be separated from the linkage structure.

3. The electric operating mechanism according to claim 2, wherein a sleeve is protruded from a middle portion of the rotating body, the sleeve is sleeved on the rotating shaft, the shifting arm extends from an outer periphery of the sleeve, and the shifting arm extends to a plane of the linkage structure.

4. The electric operating mechanism according to claim 3, wherein the toggle arm comprises a connecting portion and a toggle portion, the connecting portion is protruded on the outer periphery of the sleeve and extends along the radial direction of the sleeve, the toggle portion is protruded on the end portion of the connecting portion and extends parallel to the axis of the sleeve, and the toggle portion extends to the plane of the linkage structure.

5. The mechanism of claim 2, wherein the toggle assembly further comprises a position sensor mounted to the toggle arm, and wherein the position sensor is configured to detect a position of the toggle arm.

6. The electric operating mechanism of claim 2, wherein the linkage structure comprises a linkage dial and a connecting shaft;

the linkage turntable is rotationally connected to the rotating shaft, and the shifting arm can be abutted against the linkage turntable and drives the linkage turntable to rotate;

7. The electric operating mechanism according to claim 6, wherein the linkage turntable has a first abutting surface and a second abutting surface arranged along a radial direction of a rotation path thereof;

the shifting arm can abut against the first abutting surface and push the linkage turntable to rotate along a first direction, and the linkage turntable drives the connecting shaft to drive the switching-on/off structure to switch on;

the shifting arm can abut against the second abutting surface and push the linkage turntable to rotate along a second direction, and the linkage turntable drives the connecting shaft to drive the switching-on/off structure to switch off;

8. The electric operating mechanism of claim 7, wherein the linkage dial is sector shaped.

9. The electric operating mechanism according to claim 7, wherein a limiting portion is further protruded from an outer edge of the linkage turntable, a third abutting surface facing the first direction is disposed on the limiting portion, and the third abutting surface is used for abutting against the limiting structure and limiting the rotation of the linkage turntable along the first direction.

10. A circuit breaker comprising an electrically operated mechanism as claimed in any one of claims 1 to 9.