CN215299162U

CN215299162U - Operating device and circuit breaker

Info

Publication number: CN215299162U
Application number: CN202121114500.XU
Authority: CN
Inventors: 潘万军; 乔嗣健
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-12-24
Anticipated expiration: 2031-05-21

Abstract

The utility model provides an operating mechanism and a circuit breaker, which relate to the technical field of low-voltage electrical appliances and comprise a driving piece, an action mechanism, a tripping piece, a driving piece and an action piece, wherein the driving piece and the action piece are arranged on the driving piece; the driving piece and the acting piece are both positioned on the same side of the driving piece, and the driving piece is in transmission connection with the action mechanism through the driving piece; the driving member is driven to drive the driving member to drive the actuating mechanism to close or drive the acting member to drive the actuating mechanism to open through the release member. So, compare in the current form that sets up action and driving medium respectively in two relative lateral walls of driving piece, can make the stack thickness of driving piece, action and driving medium obtain effectual reduction, be convenient for reduce operating device's thickness, when being applied to the circuit breaker with operating device, also can be favorable to the reduction of the whole thickness of circuit breaker, realize the miniaturization of circuit breaker, improve its ability that adapts to installation space.

Description

Operating device and circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus technical field particularly, relates to an operating device and circuit breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and the safety of household electricity utilization is required to be higher. The circuit breaker may be installed in a terminal distribution line. Meanwhile, the circuit can be connected, carried and disconnected under the condition of normal or abnormal circuit, and the circuit and the electrical equipment are effectively protected.

The existing circuit breaker usually realizes the opening and closing functions of the circuit breaker through an operating mechanism, but because the existing operating mechanism has more laminated parts, the whole thickness of the circuit breaker is thicker, the circuit breaker is difficult to adapt to the installation and use environment with requirements on the thickness, and the use range of the circuit breaker is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an operating device and circuit breaker to the not enough among the above-mentioned prior art to reduce the thickness of circuit breaker, enlarge the application range of circuit breaker.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

the utility model discloses an aspect provides an operating device, include: the device comprises a driving part, an action mechanism, a disengaging part, a transmission part and an acting part, wherein the transmission part and the acting part are arranged on the driving part; the driving piece and the acting piece are both positioned on the same side of the driving piece, and the driving piece is in transmission connection with the action mechanism through the driving piece; the driving member is driven to drive the driving member to drive the actuating mechanism to close or drive the acting member to drive the actuating mechanism to open through the release member.

Optionally, the driving member is a driving wheel, the transmission member is a sector gear disposed on the driving wheel, and the driving wheel is in transmission connection with the actuating mechanism through the sector gear.

Optionally, the rotation radius of the acting element is smaller than or equal to the root circle radius of the sector gear.

Optionally, the tripping element includes a tripping body rotatably disposed and a tripping portion disposed on the tripping body, and the tripping portion is located on a periphery of the driving wheel so as to drive the actuating mechanism to open the brake via the tripping body when the action element drives the tripping portion.

Optionally, the acting element is a boss, the boss is arranged on the driving wheel, and the boss and the sector gear are circumferentially distributed on the driving wheel.

Optionally, the actuating mechanism includes gear portion, rotation piece and moving contact subassembly, and gear portion sets up in rotating the piece, and gear portion and sector gear mesh rotate the piece and move contact subassembly transmission and be connected.

Optionally, the action mechanism further includes an action boss disposed on the rotating member, and when the moving contact assembly is in a closing state, the action boss corresponds to the release member, and is used for driving the release member to open the moving contact assembly by the release member when the action member drives the release member.

Optionally, the operating mechanism further comprises a first elastic member, and the first elastic member is connected with the release member and is used for providing a resetting force for the release member.

Optionally, the operating mechanism further includes a second elastic member, and the second elastic member is connected to the actuating mechanism and is configured to provide a restoring force to the actuating mechanism.

The utility model discloses on the other hand still provides a circuit breaker, including casing, static contact subassembly and any kind of operating device of the aforesaid, static contact subassembly and operating device set up respectively in the casing, and operating device's actuating mechanism corresponds the setting with the static contact subassembly.

The beneficial effects of the utility model include:

the utility model provides an operating mechanism and circuit breaker, regard driving piece as the carrier, set up driving medium and acting part respectively on the driving piece, can set up driving medium and acting part together on the same side of driving piece, this kind of setting up mode can make driving medium and acting part can be tiled in the same side of driving piece, for example acting part and driving medium set up in one side of driving piece on the same layer, make in the thickness of the stack of driving piece, acting part and driving medium be the thickness of driving piece self and the thickness of one of acting part or driving medium (the thickness of one of acting part or driving medium: mean when the thickness of acting part is greater than the thickness of driving medium, be the thickness of acting part, when the thickness of acting part is less than the thickness of driving medium, be the thickness of driving medium, when the thickness of acting part equals the thickness of driving medium, for the thickness of any one of them), so, compare in the current form that sets up action piece and driving medium respectively in two relative lateral walls of driving piece, can make the stack thickness of driving piece, action piece and driving medium obtain effectual reduction, be convenient for reduce operating device's thickness, when being applied to the circuit breaker with operating device, also can be favorable to the reduction of the whole thickness of circuit breaker, realize the miniaturization of circuit breaker, improve its adaptation installation space's ability.

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 diagram of a state of an operating mechanism according to an embodiment of the present invention;

fig. 2 is a second schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 3 is a third schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 4 is a fourth schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 5 is a fifth schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 6 is a sixth schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 7 is a seventh schematic view illustrating a state of an operating mechanism according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 110-a drive wheel; 120-sector gear; 121-root circle of sector gear; 130-a acting element; 200-a fastener release; 210-a trip body; 220-a release part; 230-a first elastic member; 300-an action mechanism; 310-a rotating member; 311-action boss; 320-gear portion; 330-moving contact assembly; 340-a second elastic member; 400-a stationary contact assembly; 500-a housing; 501-input terminal; 502-output terminals; 503-a handle; 504-buckling; 505-a fourth elastic member; 506-an electric operating mechanism; 507-connecting rod; 508-short circuit protector; 509-overload protector; 510-a flexible connection line; 511-arc extinguishing chamber.

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. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the 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, the terms "first", "second", "third", etc. are used only for distinguishing between descriptions and are not to be construed as indicating or implying relative importance.

The embodiment of the utility model provides an aspect provides an operating device, and this operating device can be applied to among the switching device, for example low-voltage circuit breaker, miniature circuit breaker etc. in use, can set up it in the casing of circuit breaker, and apply in operating device through external force according to the demand and make it carry out the transmission, and then realize closing a floodgate, the separating brake function of circuit breaker, also realize the break-make of the load circuit who inserts.

Referring to fig. 1, the operating mechanism may include: the driving member, the actuating mechanism 300, the separating member 200, the driving member and the acting member 130, wherein the driving member can be used as a carrier, the driving member and the acting member 130 are respectively arranged on the driving member, the driving member and the driving member can be manufactured by an integrated forming process, or can be respectively formed and then arranged into an integrated structure, and the acting member 130 is the same. When the transmission member and the acting member 130 are integrated with the driving member, the transmission member and the acting member 130 can be disposed together on the same side of the driving member, and the arrangement can make the transmission member and the acting member 130 be able to be laid on the same side of the driving member, for example, the acting member 130 and the transmission member are disposed on the same layer on one side of the driving member, so that the overlapping thickness of the driving member, the acting member 130 and the transmission member is the thickness of the driving member itself and the thickness of one of the acting member 130 and the transmission member (the thickness of one of the acting member 130 and the transmission member means that when the thickness of the acting member 130 is greater than the thickness of the transmission member, the thickness of the transmission member is the thickness of the acting member 130, and when the thickness of the acting member 130 is less than the thickness of the transmission member, the thickness of either one of the acting member and the transmission member is the thickness of the transmission member), so, compare in the current form that sets up action 130 and driving medium respectively in two relative lateral walls of driving piece, can make the stack thickness of driving piece, action 130 and driving medium obtain effectual reduction, be convenient for reduce operating device's thickness, when being applied to the circuit breaker with operating device, also can be favorable to the reduction of the whole thickness of circuit breaker, realize the miniaturization of circuit breaker, improve its adaptation installation space's ability. Note that, in the present application, the thickness, the stacking, and the like all refer to the direction perpendicular to the paper surface in fig. 1 to 8, and the directions are explained based on the orientations shown in the drawings and are only for understanding, and therefore, the present invention is not to be construed as being limited thereto.

As shown in fig. 1, the driving member and the acting member 130 are both disposed on the driving member, in order to realize the switching-on/off state of the operating mechanism, the driving member may be in transmission connection with the operating mechanism 300, so that when the switching-on state of the operating mechanism is required, the driving member may establish transmission with the operating mechanism 300 through the driving member, so that when the switching-on state of the operating mechanism is required, the driving member may be driven, that is, under the action of external force, the driving member moves while driving the driving member to move, and then the driving member drives the operating mechanism 300 to move, so that the operating mechanism 300 may move in the direction from the switching-off state to the switching-on state, as shown in fig. 1 and 5.

In addition, the release 200 should be reasonably set according to the setting positions and the movement forms of the driving element and the acting element 130, so that when the operating mechanism is required to be opened, the driving element moves while driving the acting element 130 to move, and then the acting element 130 drives the release 200 to move, and the release 200 drives the actuating mechanism 300 to move, so that the actuating mechanism 300 can move in the direction from closing to opening, and the switching from the closing state to the opening state is realized, as shown in fig. 6 and 7.

In summary, when the transmission member and the acting element 130 are respectively disposed on the driving member, the driving member can be used as a power source, and according to the positions of the transmission member and the acting element 130, the transmission member drives the actuating mechanism 300 to close, and the acting element 130 drives the release element 200 to open, so as to drive the actuating mechanism 300 to open, thereby implementing the closing state or the opening state of the operating mechanism.

Optionally, the driving member is the driving wheel 110, that is, the driving wheel 110 moves in a rotating manner, for example, the driving wheel 110 is rotatably disposed on the housing 500, the driving wheel 110 may have no toothed portion, and may be directly driven by a driving source such as a motor, or may have a toothed portion (as shown in fig. 1 to 8), and the driving source such as a motor drives the driving wheel 110 to rotate through a gear transmission manner, which is not limited in the present application.

The transmission member is a sector gear 120 disposed on one side of the driving wheel 110, and of course, the acting member 130 is also disposed on the side of the driving wheel 110, as shown in fig. 1 to 8. When the switch needs to be switched on, as shown in fig. 2, the driving wheel 110 drives the sector gear 120 to move, so that the sector gear 120 is in transmission connection with the actuating mechanism 300, and after a transmission relationship is established, as shown in fig. 3, at this time, along with the continuous rotation of the sector gear 120, the actuating mechanism 300 is also synchronously driven to move, so that the actuating mechanism 300 moves in the direction from the switch-off direction to the switch-on direction, and finally, as shown in fig. 5, the actuating mechanism 300 is in the switch-on state.

When the actuating mechanism 300 is in the closed state, the sector gear 120 is separated from the actuating mechanism 300 as the driving wheel 110 continues to rotate, and the state shown in fig. 5 is formed. Thereafter, when the brake needs to be opened, as shown in fig. 6, the driving wheel 110 drives the acting element 130 to rotate, the acting element 130 contacts with the release element 200 and drives the release element to move, at this time, the release element 200 drives the actuating mechanism 300 to move, so that the actuating mechanism 300 moves from the direction from closing to opening, and finally, as shown in fig. 7, the actuating mechanism 300 is in the brake-open state. Of course, in another embodiment, the transmission member (sector gear 120) and the acting member 130 (toggle) can be interchanged, so that both have the clutch function and the respective switching function when necessary.

Alternatively, since the moving direction of the actuating mechanism 300 from opening to closing and the moving direction from closing to opening should be opposite, and the acting element 130 and the transmission element are both disposed on the same side of the driving wheel 110, when the driving wheel 110 moves, the acting element 130 and the transmission element will move synchronously with each other, so as to avoid interference between the acting element 130 and the actuating mechanism 300 during closing or opening, which may cause malfunction of the operating mechanism, and the setting range of the rotation radius R of the acting element 130 may be smaller than or equal to the radius of the root circle 121 of the sector gear, where the rotation radius R of the acting element 130 refers to the distance between the farthest point of the acting element 130 from the rotation center of the acting element 130 and the rotation center of the acting element 130, as shown in fig. 2 and 3. This prevents interference between the acting element 130 and the operating mechanism 300 due to direct contact.

Optionally, as shown in fig. 1 to 8, when the trip device 200 is rotatably disposed, for example, rotatably disposed in the housing 500, and when the radius of rotation R of the acting element 130 is set to be closer to the radius of the tooth root circle 121 of the sector gear, for example, the radius of rotation R of the acting element 130 is equal to the radius of the tooth root circle 121 of the sector gear, the radius of rotation of the contact portion (for example, the trip portion 220) between the trip device 200 and the acting element 130 can be effectively reduced, so that when the driving wheel 110 rotates at the same rotation speed, the acting element 130 can drive the trip device 200 to rotate at a faster speed, and further the speed at which the trip device 200 drives the acting mechanism 300 is increased, and the opening speed of the entire operating mechanism is effectively increased, the opening time of the entire operating mechanism is reduced, and further the performance of the circuit breaker is improved.

As shown in fig. 1 to 8, the trip device 200 includes a trip body 210 rotatably disposed (the trip device 200 or the trip body 210 may be rotatably disposed in a housing) and a trip portion 220 disposed on the trip body 210, in order to enable the trip portion 220 to be pushed by the operating member 130 when opening is required, therefore, the trip portion 220 may be located on a side of the driving wheel 110 where the operating member 130 is disposed, rather than on a side of the driving wheel 110 away from the operating member 130, and in order to effectively shorten a rotation radius of the trip portion 220, the trip portion 220 may be located at a periphery of the driving wheel 110, even if the trip portion 220 is located as far away from a rotation center of the driving wheel 110 as possible, but considering that the trip portion 220 needs to be able to trip in cooperation with the operating member 130, therefore, the rotation radius of the operating member 130 may be increased, so that a contact portion between the operating member 130 and the trip portion 220 may also be located at a periphery of the driving wheel 110, for example, the trip unit 220 is disposed at the tooth root circle 121 of the sector gear such that the rotation radius of the operator 130 is equal to the radius of the tooth root circle 121 of the sector gear, so that the rotation radius of the operator 130 can be increased as much as possible and the rotation radius of the trip unit 220 can be decreased to increase the opening speed while avoiding interference between the operator 130 and the operating mechanism 300.

Optionally, the acting element 130 is a boss, the boss is disposed on a surface of the driving wheel 110 on which the sector gear 120 is disposed, in order to realize respective clutching of the boss and the sector gear 120, as shown in fig. 1 to 8, the boss and the sector gear 120 may be circumferentially distributed on the driving wheel 110, and an included angle between the sector gear 120 and the boss may be an obtuse angle (as shown in fig. 1 to 8), a right angle, or an acute angle, which is not limited in the present application. The boss may be a needle-like boss connected to the rotation center as shown in fig. 1 to 8, or may be a boss intermittently provided with respect to the rotation center, and the central angle of the sector gear 120 is not limited, and may be, for example, 30 degrees, 40 degrees, 45 degrees, or the like.

Alternatively, as shown in fig. 1 to 7, the actuating mechanism 300 includes a gear portion 320, a rotating member 310 and a movable contact assembly 330, the gear portion 320 is disposed on the rotating member 310, the gear portion 320 is used for meshing with the sector gear 120, and the rotating member 310 is in transmission connection with the movable contact assembly 330. The gear portion 320 may be a full-tooth portion or a sector-shaped tooth portion. The rotating member 310 may be in transmission connection with the moving contact assembly 330 through the connecting rod 507, and when the rotating member 310 rotates, the connecting rod 507 drives the moving contact assembly 330 to rotate, so as to achieve closing and opening of the moving contact assembly 330.

Optionally, as shown in fig. 1 to 7, the actuating mechanism 300 further includes an actuating boss 311 disposed on the rotating member 310, and when the movable contact assembly 330 is in a closing state, the actuating boss 311 corresponds to the release member 200, and when the acting member 130 drives the release member 200, the release member 200 pushes the actuating boss 311 to drive the movable contact assembly 330 to open.

Optionally, the operating mechanism further includes a first elastic member 230, and the first elastic member 230 is connected to the release member 200 and configured to provide a resetting force to the release member 200, for example, after the release member 200 rotates from the initial position shown in fig. 1, the first elastic member 230 may provide a resetting force to the initial position, so that the release member 200 can be reset in time after being applied, so as to ensure that the multiple-opening function is implemented.

Optionally, the operating mechanism further includes a second elastic member 340, and the second elastic member 340 is connected to the actuating mechanism 300 and is configured to provide a restoring force to the actuating mechanism 300, so that not only the actuating mechanism 300 can be opened, but also the opening speed of the operating mechanism can be increased by the second elastic member 340.

Each of the first and second

elastic members

230 and 340 may be in the form of a torsion spring, a tension spring, a compression spring, or the like.

In order to better understand the present application, the following description will be further described with reference to fig. 1 to 7:

as shown in fig. 1, the driving wheel 110, the trip body 210, the rotating member 310 and the moving contact assembly 330 are rotatably disposed in the housing 500, and at this time, the operating mechanism is in an open state. When the switch-on is required, the driving wheel 110 rotates clockwise, and the sector gear 120 and the acting member 130 rotate clockwise synchronously with the driving wheel 110. As shown in fig. 2, since the rotation radius of the acting element 130 is smaller than or equal to the radius of the root circle 121 of the sector gear, at this time, the sector gear 120 contacts with the trip unit 220 first, and pushes the whole trip unit 200 to rotate in the counterclockwise direction (the trip unit 200 stores energy through the first elastic element 230), that is, the trip unit 200 abduces the sector gear 120, so that the sector gear 120 continues to rotate clockwise, at this time, the action boss 311 on the rotating element 310 is separated from the trip body 210 by a distance (abduction interval) for allowing the trip unit 200 to abduce smoothly. As shown in fig. 3, as the sector gear 120 continues to rotate clockwise, it meshes with the gear portion 320 of the rotating member 310, and drives the rotating member 310 to rotate counterclockwise, the moving contact component 330 is driven by the connecting rod 507 to move towards the closing direction (clockwise rotation), meanwhile, the actuating boss 311 rotates counterclockwise with the rotation member 310, and approaches the release member 200, that is, the offset distance between the two gradually decreases, which is required to satisfy the condition that the trip body 210 does not contact with the action boss 311 before the sector gear 120 is separated from the trip piece 200, thus, as shown in fig. 4, as the sector gear 120 continuously drives the gear portion 320 to rotate, after the sector gear 120 is separated from the fastening member 200, the release member 200 is rotated clockwise to return to the initial position before abdicating under the action of the restoring force provided by the first elastic member 230 (the release force of the release member 200 is released by the first elastic member 230). With the continuous rotation of the sector gear 120, the moving contact assembly 330 is driven by the gear portion 320, the rotating member 310 and the connecting rod 507 to be switched on (in the switching-on process of the entire moving contact assembly 330, the second elastic member 340 is enabled to store energy), the action boss 311 also continues to rotate counterclockwise, the abdicating distance between the action boss 311 and the tripping member 200 is gradually reduced, as shown in fig. 5, after the moving contact assembly 330 is switched on, the sector gear 120 is disengaged from the gear portion 320, at this time, the operating mechanism is in a switching-on state, wherein the movement shown by the moving contact assembly 330 in fig. 4 to 5 can be an over-travel stage, so that the moving contact assembly 330 and the static contact assembly 400 have better contact stability. As the movable contact assembly 330 is switched on in place, the operating mechanism is in a switched-on state, and at this time, as shown in fig. 5, the action boss 311 also moves to a position corresponding to the trip 200.

When the brake is required to be opened, the driving wheel 110 continues to rotate clockwise, so as to drive the sector gear 120 and the acting element 130 to rotate clockwise synchronously along with the driving wheel 110. As shown in fig. 6, the acting element 130 gradually approaches the trip unit 200 and contacts the trip portion 220 of the trip unit 200, and as the driving wheel 110 continuously rotates clockwise, the acting element 130 pushes the trip portion 220 to rotate the trip body 210 in a counterclockwise direction (the trip unit 200 stores energy in the first elastic element 230), since the front acting boss 311 has moved to a position closer to the trip unit 200, as the trip unit 220 pushes the trip body 210 to rotate counterclockwise, the operating boss 311 is pushed by the trip body 210 to rotate the rotation member 310 in the clockwise direction, and then after the rotation member 310 goes over the dead point, the movable contact assembly 330 is driven by the action of the reset force of the second elastic element 340 (the second elastic element 340 releases energy) to move from the closing direction to the opening direction, i.e., counterclockwise, and the operating mechanism is in the open state, i.e., the actuating mechanism 300 is reset to the state shown in fig. 1. As the driving wheel 110 continuously rotates clockwise, the acting element 130 is separated from the trip unit 220, and at this time, the trip unit 200 is reset to the state shown in fig. 1 by the reset force of the first elastic element 230 (the first elastic element 230 releases energy), and when the driving wheel 110 rotates clockwise next time, the sector gear 120 still contacts with the trip unit 200 before the acting element 130, and then, the next closing is implemented.

The embodiment of the utility model provides a on the other hand still provides a circuit breaker, including casing 500, static contact subassembly 400 and any kind of operating device of the aforesaid, static contact subassembly 400 and operating device set up respectively in casing 500, and operating device's actuating mechanism 300 corresponds the setting with static contact subassembly 400.

For example, as shown in fig. 8, the operating mechanism is disposed in the housing 500, and the moving contact assembly 330 and the static contact assembly 400 in the operating mechanism 300 are located correspondingly, that is, the static contact assembly 400 is located on the moving path of the moving contact assembly 330, so as to ensure that the moving contact assembly 330 and the static contact assembly are stably switched on and off.

As shown in fig. 8, the driving member may be a driving wheel 110, which can be controlled by an electric operating mechanism 506 such as a motor to implement an electric switching function of the circuit breaker, and in addition, since the transmission member may be a sector gear 120, a manual operating mechanism may be added by utilizing the clutch characteristic, that is, a handle 503 is disposed on the housing 500, and the handle 503 is directly connected to the rotating member 310 through a link 507, so that when the sector gear 120 is separated from the gear portion 320, the link 507 is directly driven by the handle 503 to drive the operating mechanism 300 to implement the switching function.

One end of the first elastic member 230 may abut against the release member 200, and the other end abuts against the protrusion on the housing 500, and similarly, one end of the second elastic member 340 is connected to the movable contact assembly 330, and the other end is connected to the protrusion on the housing 500. In addition, a third elastic member may be further provided to be connected to the rotation member 310 to provide a restoring force to the rotation member 310.

In order to enable the circuit breaker to access the load circuit, an input terminal 501 may be further disposed at the right side of the housing 500, and an output terminal 502 may be disposed at the left side of the housing 500, and when connected, the input terminal 501 may be connected with the movable contact assembly 330 via the soft connection line 510, and the fixed contact assembly 400 may be connected with the output terminal 502.

In order to enable the circuit breaker to be stably inserted into the chassis and form a clamping limit relationship with the chassis, a buckle 504 may be further disposed above the handle 503, the buckle 504 is rotatably disposed on the housing 500, one end of the buckle 504 extends out of the housing 500, and the other end of the buckle 504 corresponds to the handle 503, and the buckle 504 is connected to the fourth elastic member 505, so that the fourth elastic member 505 provides an acting force to the buckle 504 to enable the buckle 504 to always have an upward bouncing tendency (to enable one end of the buckle 504 to have a tendency of extending out of the housing 500), so that when the handle 503 is in a closing position and is not inserted into the chassis, one end of the buckle 504 extends out of the housing 500, and since the handle 503 is abutted against the buckle 504 at this time, one end of the buckle 504 cannot retract into the housing 500, one end of the buckle 504 is abutted against the chassis, and the circuit breaker cannot be inserted into the chassis. When the handle 503 is in an opening state and is in the process of plugging the chassis, one end of the buckle 504 is compressed into the housing 500 by the chassis, and at this time, the other end of the buckle 504 abuts against the handle 503, so that the handle 503 cannot be switched on in the process of plugging the chassis. Safety in the process of plugging the breaker is fully guaranteed through the buckle 504.

In order to further improve the safety of the load circuit, a short-circuit protector 508, such as an electromagnetic trip, may be further provided, so that when the load circuit is short-circuited, the breaker is in the open state by the short-circuit protector 508, and an overload protector 509, such as a bimetal plate, may be further provided, so that when the load circuit is overloaded, the breaker is in the open state by the overload protector 509.

In order to further improve the performance of the circuit breaker, an arc extinguish chamber 511 may be further provided, and the arc extinguish chamber 511 is arranged at the openings of the static contact component 400 and the moving contact component 330 in the opening state, so that the arc generated by the arc extinguish chamber 511 is quickly extinguished in the opening state, the electrical loss of the circuit breaker caused by the arc is reduced, and the service life of the circuit breaker is prolonged.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An operating mechanism, comprising: the device comprises a driving part, an action mechanism, a disengaging part, a transmission part and an acting part, wherein the transmission part and the acting part are arranged on the driving part; the transmission piece and the acting piece are both positioned on the same side of the driving piece, and the driving piece is in transmission connection with the action mechanism through the transmission piece; the driving piece is driven to drive the transmission piece to drive the action mechanism to be switched on or drive the action piece to drive the action mechanism to be switched off through the release piece.

2. The operating mechanism of claim 1 wherein said drive member is a drive wheel and said drive member is a gear segment disposed on said drive wheel, said drive wheel being drivingly connected to said actuating mechanism through said gear segment.

3. The operating mechanism of claim 2 wherein said acting element has a radius of rotation less than or equal to the root circle radius of said sector gear.

4. The operating mechanism according to claim 2, wherein the trip member includes a trip body rotatably disposed and a trip portion disposed on the trip body, the trip portion being located at a periphery of the driving wheel to drive the operating mechanism to open via the trip body when the operating member drives the trip portion.

5. An operating mechanism according to any one of claims 2 to 4 wherein the acting element is a boss which is provided on the drive wheel and the boss and the sector gear are circumferentially distributed on the drive wheel.

6. The operating mechanism as claimed in any one of claims 2 to 4, wherein said actuating mechanism includes a gear portion, a rotating member and a movable contact assembly, said gear portion is disposed on said rotating member, said gear portion is engaged with said sector gear, and said rotating member is drivingly connected to said movable contact assembly.

7. The operating mechanism according to claim 6, wherein the actuating mechanism further includes an actuating protrusion disposed on the rotating member, and when the moving contact assembly is in a closed state, the actuating protrusion corresponds to the release member, and when the acting member drives the release member, the release member pushes the actuating protrusion to open the moving contact assembly.

8. The operating mechanism of claim 1, further comprising a first resilient member coupled to the release member for providing a restoring force to the release member.

9. The operating mechanism of claim 1 further comprising a second resilient member coupled to said actuating mechanism for providing a return force to said actuating mechanism.

10. A circuit breaker, comprising a housing, a fixed contact assembly and the operating mechanism as claimed in any one of claims 1 to 9, wherein the fixed contact assembly and the operating mechanism are respectively disposed on the housing, and the actuating mechanism of the operating mechanism is disposed corresponding to the fixed contact assembly.