CN116266519A - Operating mechanism and circuit breaker - Google Patents

Abstract

An operating mechanism and a circuit breaker relate to the technical field of electrical switches. The operating mechanism comprises a support, a locking piece and a jump piece, wherein the support, the locking piece and the jump piece are arranged in a shell, the support is rotationally connected with the shell, the locking piece, the jump piece and a moving contact in the shell are respectively rotationally arranged on the same side of the support, the jump piece is used for being buckled with the locking piece, a handle in the shell is in transmission connection with the jump piece, and the handle is driven to drive the moving contact to be switched on or switched off with a static contact in the shell through the joint cooperation of the support, the locking piece and the jump piece. The circuit breaker comprises the operating mechanism. The operating mechanism and the circuit breaker can solve the problem of large size of the traditional circuit breaker.

Description

Operating mechanism and circuit breaker

Technical Field

The invention relates to the technical field of electrical switches, in particular to an operating mechanism and a circuit breaker.

Background

With the rapid development of social economy and urban construction, the living standard and living level of people are remarkably improved, and the electricity safety is more comprehensively perceived. To increase the safety of electricity, circuit breakers are typically connected in the electricity loop. A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. When faults such as electric leakage, overload and short circuit occur in the system, the circuit breaker can rapidly cut off a fault circuit in the system or cut off the power supply of the whole power supply so as to prevent the faults from expanding and avoid huge economic loss and casualties.

The distribution box is the last-stage distribution facility in the power supply system and is used for realizing distribution and protection of electric energy, and is embedded in a wall body, so that the volume is small. Traditional circuit breaker wholly is protruding font, and its binding post adopts the screw wiring generally, and circuit breaker itself is high great, and receives wiring direction restriction, and the height that needs when the wiring is installed is also very big. The circuit breaker adopting the screw connection can occupy the operation space of the operation handle of the circuit breaker. In order to ensure that the operating handle has sufficient moving space, the overall volume of the circuit breaker tends to increase. The smaller-sized distribution boxes (for example, 86-bottom box, 118-bottom box, 120-bottom box, etc. are set as distribution boxes) have high demands for miniaturization of the circuit breaker provided therein, which may be difficult to satisfy due to defects of the height thereof, and thus, more miniaturized circuit breakers are required to meet market demands.

Disclosure of Invention

The invention aims to provide an operating mechanism and a circuit breaker, which can solve the problem of larger size of the traditional circuit breaker.

Embodiments of the present invention are implemented as follows:

in one aspect of the embodiment of the invention, an operating mechanism is provided, which comprises a bracket, a locking piece and a trip piece, wherein the bracket is arranged in a shell, the bracket is rotationally connected with the shell, the locking piece, the trip piece and a moving contact in the shell are respectively rotationally arranged on the same side of the bracket, the trip piece is used for being buckled with the locking piece, a handle in the shell is in transmission connection with the trip piece, and the handle is driven to drive the moving contact to be switched on or switched off with a fixed contact in the shell through the joint cooperation of the bracket, the locking piece and the trip piece. The operating mechanism can solve the problem of larger size of the traditional circuit breaker.

Optionally, the support is provided with main shaft, first pivot, second pivot and third pivot respectively, the main shaft with first pivot be coaxial set up respectively in the relative both sides of support, first pivot second pivot with the third pivot be the interval respectively set up in the same side of support, the support passes through the main shaft with the casing rotates to be connected, the hasp piece passes through first pivot with the support rotates to be connected, the jump fastener passes through the second pivot with the support rotates to be connected, the moving contact passes through the third pivot with the support rotates to be connected.

Optionally, the operating mechanism further includes a first elastic element sleeved on the first rotating shaft, one end of the first elastic element abuts against the locking element, the other end abuts against the bracket, and the first elastic element is used for providing a restoring force for the locking element to move relative to the bracket.

Optionally, the operating mechanism further comprises a second elastic member sleeved on the main shaft, one end of the second elastic member abuts against the moving contact, the other end of the second elastic member abuts against the shell, and the second elastic member is used for providing a reset force for the moving contact to move relative to the shell.

Optionally, the support is further provided with a through hole, the through hole is located between the first rotating shaft and the third rotating shaft, and one end of the second elastic element passes through the through hole and abuts against the moving contact, so that the moving contact abuts against the support.

Optionally, the operating mechanism further comprises a transmission part rotatably arranged in the shell, the handle is in transmission connection with the jump fastener through the transmission part, the transmission part is connected with the jump fastener through a first connecting rod, and the handle is connected with the transmission part through a gear or a second connecting rod.

Optionally, the transmission piece is provided with the installation axle, operating device still includes the cover and locates the epaxial third elastic component of installation, the one end of third elastic component with the transmission piece supports and holds, the other end supports with the casing, the third elastic component is used for to the transmission piece is relative the motion of casing provides reset force.

In another aspect of the embodiment of the invention, a circuit breaker is provided, which comprises a shell, and a handle, a moving contact, a fixed contact, an input terminal, an output terminal and the operating mechanism which are arranged in the shell, wherein the input terminal and the output terminal are respectively used for being spliced with a distribution box, and the moving contact and the fixed contact are driven to be switched on or off by the handle through the operating mechanism; the circuit breaker comprises a shell, an input terminal, an output terminal, a handle and a circuit breaker, wherein the input terminal and the output terminal are arranged on the same side of the shell at intervals respectively, the handle is arranged on one side of the shell opposite to the input terminal, and when the circuit breaker is in closing, one surface of the handle, which is away from the shell, is flush with one surface of the shell, which is away from the input terminal. The operating mechanism can solve the problem of larger size of the traditional circuit breaker.

Optionally, the circuit breaker further comprises a thermal trip, the moving contact is connected with a fixed end of the thermal trip through a first flexible connecting wire, and a movable end of the thermal trip is connected with the input terminal through a second flexible connecting wire.

Optionally, the circuit breaker still includes arc extinguishing mechanism, arc extinguishing mechanism includes along moving contact keeps away from striking board and the explosion chamber that one side of operating device set gradually, the stiff end of thermal trip ware still with the striking board is kept away from the one end of explosion chamber is connected, be provided with the regulating part on the casing, the tip of regulating part with the striking board supports and holds, is used for adjusting the expansion end of thermal trip ware with distance between the operating device.

The beneficial effects of the embodiment of the invention include:

the operating mechanism comprises a support, a locking piece and a jump piece, wherein the support, the locking piece and the jump piece are arranged in a shell, the support is rotationally connected with the shell, the locking piece, the jump piece and a moving contact in the shell are respectively rotationally arranged on the same side of the support, the jump piece is used for being buckled with the locking piece, a handle in the shell is in transmission connection with the jump piece, and the handle is driven to drive the moving contact to be switched on or switched off with a static contact in the shell through the joint cooperation of the support, the locking piece and the jump piece. The movable contact in the latch piece, the jump fastener and the shell are respectively rotated and arranged on the same side of the support, so that the specific structure and the installation and the matching of the operating mechanism are simpler, the occupied space of the operating mechanism is smaller, the transmission action is simpler, the miniaturization of the circuit breaker is realized, and the automatic production is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a cross-sectional view of a circuit breaker in a breaking state according to an embodiment of the present invention;

fig. 2 is one of sectional views of a circuit breaker in a closed state according to an embodiment of the present invention;

fig. 3 is a second cross-sectional view of the circuit breaker in a closing state according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an operating mechanism and a moving contact according to an embodiment of the present invention;

FIG. 5 is a second schematic structural view of an operating mechanism and a moving contact according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a bracket of an operating mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.

Icon: 100-an operating mechanism; 110-a bracket; 111-a main shaft; 112-a first spindle; 113-a second spindle; 114-a third spindle; 115-avoiding holes; 120-locking piece; 130-jump fastener; 140-a first elastic member; 150-a second elastic member; 160-a transmission member; 161-a first link; 162-gear; 170-a third elastic member; 200-a circuit breaker; 210-a housing; 211-an adjusting member; 220-handle; 230-a moving contact; 240-stationary contact; 250-input terminals; 260-output terminals; 270-thermal trip; 271-first flexible connection lines; 272-a second flexible connection line; 280-electromagnetic release; 290-arc extinguishing mechanism; 291-arc striking plate; 292-arc chute.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention 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 invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be connected between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 7 in combination, an embodiment of the present application provides a circuit breaker 200, including a housing 210, and a handle 220, a moving contact 230, a fixed contact 240, an input terminal 250, an output terminal 260 and an operating mechanism 100 disposed in the housing 210, where the input terminal 250 and the output terminal 260 are respectively used for plugging with a distribution box, and the handle 220 is driven to drive the moving contact 230 and the fixed contact 240 to close or open through the operating mechanism 100; the input terminal 250 and the output terminal 260 are disposed at the same side of the housing 210 at intervals, the handle 220 is disposed at a side of the housing 210 opposite to the input terminal 250, and when the circuit breaker 200 is in closing, a surface of the handle 220 facing away from the housing 210 is flush with a surface of the housing 210 facing away from the input terminal 250. The operating mechanism 100 can solve the problem of the large size of the conventional circuit breaker.

As shown in fig. 1 to 3, the housing 210 may be two sub-housings 210 disposed opposite to each other, and the two sub-housings 210 together enclose a receiving space for receiving various components, so as to improve the simplicity of the circuit breaker 200 in the manufacturing process. To plug the circuit breaker 200 into the distribution box, the circuit breaker 200 further includes an input terminal 250 and an output terminal 260 disposed within the housing 210, and the input terminal 250 and the output terminal 260 may be plug terminals, for example, such that the input terminal 250 can be plugged into an input terminal row within the distribution box and the output terminal 260 can be plugged into an output terminal row within the distribution box, thereby connecting the circuit breaker 200 into a power circuit having a load.

In order to realize the breaking function of the circuit breaker 200, as shown in fig. 1 to 3, the circuit breaker 200 further includes a handle 220, a moving contact 230, a fixed contact 240 and an operating mechanism 100, which are disposed in the housing 210, the handle 220 is in transmission connection with the moving contact 230 through the operating mechanism 100, the moving contact 230 is connected with the input terminal 250, and the fixed contact 240 is connected with the output terminal 260, so that the handle 220 can move by driving the operating mechanism 100 when being driven by an external force, thereby driving the moving contact 230 and the fixed contact 240 to contact or separate, thereby enabling the circuit breaker 200 to realize switching on or off. The handle 220 is in driving connection with the moving contact 230 through the operating mechanism 100, and may be always in driving relation, or may be in driving relation only when needed.

Specifically, as shown in fig. 1 to 3, when the moving contact 230 moves toward a side close to the fixed contact 240 to bring the moving contact 230 into contact with the fixed contact 240, the circuit breaker 200 may be switched on, and at this time, a conductive loop formed by the input terminal row, the input terminal 250, the fixed contact 240, the moving contact 230, the output terminal 260, and the output terminal row together may be conducted; when the moving contact 230 moves toward a side far from the fixed contact 240 to disengage the moving contact 230 from the fixed contact 240, the circuit breaker 200 may be opened, and at this time, a conductive loop formed by the input terminal row, the input terminal 250, the fixed contact 240, the moving contact 230, the output terminal 260, and the output terminal row together may be opened, thereby switching on and off states of the load through the circuit breaker 200.

In addition, the input terminal 250 and the output terminal 260 are disposed at the same side of the housing 210 at intervals (as shown in fig. 1 to 3, the input terminal 250 and the output terminal 260 are disposed below the housing 210, respectively), so that the same side and same side functions can be realized. The description is simplified here with respect to the direction of conduction of the incoming load circuit (or, with respect to the side of the housing 210 provided with the input terminal 250 and the output terminal 260 as the rear end), that is, the form of connection of the incoming and outgoing circuit is formed, thereby improving the convenience of connection of the circuit breaker 200 when it is inserted into the distribution box. In addition, the input terminals 250 and the output terminals 260 are arranged in a spaced mode, so that the distance between the incoming line and the outgoing line can be increased, and interference between the incoming line and the outgoing line can be avoided.

Meanwhile, as shown in fig. 1 to 3, the handle 220 is disposed at a side of the housing 210 opposite to the input terminal 250, and when the circuit breaker 200 is in closing, a side of the handle 220 facing away from the housing 210 is flush with a side of the housing 210 facing away from the input terminal 250; when the circuit breaker 200 is in the open state, a side of the handle 220 facing away from the housing 210 forms an angle with a side of the housing 210 facing away from the input terminal 250. On the basis that the handle 220 can drive the moving contact 230 and the fixed contact 240 to close or open through the operating mechanism 100, the smaller the angle of the included angle is, the smaller the operating space of the handle 220 is, so that the smaller the size of the circuit breaker 200 is. The included angle may be, for example, less than 30 °.

As shown in fig. 3 to 5, the operating mechanism 100 includes a bracket 110, a latch member 120 and a latch member 130, which are disposed in a housing 210, the bracket 110 is rotationally connected with the housing 210, the latch member 120, the latch member 130 and a moving contact 230 in the housing 210 are respectively rotationally disposed on the same side of the bracket 110, the latch member 130 is used for being buckled with the latch member 120, a handle 220 in the housing 210 is in transmission connection with the latch member 130, and the handle 220 is driven to jointly cooperate with the latch member 120 and the latch member 130 to drive the moving contact 230 to close or open with a static contact 240 in the housing 210. The latch 120, the latch 130, and the moving contact 230 in the housing 210 are respectively rotatably disposed on the same side of the bracket 110, so that the specific structure and the installation and matching of the operating mechanism 100 are simpler, the occupied space of the operating mechanism 100 is smaller, and meanwhile, the transmission action is simpler, thereby being beneficial to realizing miniaturization of the circuit breaker 200 and realizing automatic production.

Specifically, as shown in fig. 4 to 6, the support 110 is respectively provided with a main shaft 111, a first rotating shaft 112, a second rotating shaft 113 and a third rotating shaft 114, the main shaft 111 and the first rotating shaft 112 are respectively coaxially arranged at two opposite sides of the support 110, the first rotating shaft 112, the second rotating shaft 113 and the third rotating shaft 114 are respectively arranged at the same side of the support 110 at intervals, the support 110 is rotationally connected with the housing 210 through the main shaft 111, the locking piece 120 is rotationally connected with the support 110 through the first rotating shaft 112, the locking piece 130 is rotationally connected with the support 110 through the second rotating shaft 113, and the movable contact 230 is rotationally connected with the support 110 through the third rotating shaft 114.

In order to enable the latch member 120 to recover its original state during the closing and opening processes of the moving contact 230 and the fixed contact 240, as shown in fig. 3 to 5, in this embodiment, the operating mechanism 100 further includes a first elastic member 140 sleeved on the first rotating shaft 112, where one end of the first elastic member 140 abuts against the latch member 120, and the other end abuts against the bracket 110, and the first elastic member 140 is used to provide a restoring force for the movement of the latch member 120 relative to the bracket 110.

In order to enable the moving contact 230 to recover its original state during the closing and opening processes of the moving contact 230 and the fixed contact 240, as shown in fig. 3 to 5, in this embodiment, the operating mechanism 100 further includes a second elastic member 150 sleeved on the main shaft 111, where one end of the second elastic member 150 abuts against the moving contact 230, and the other end abuts against the housing 210, and the second elastic member 150 is used to provide a restoring force for the movement of the moving contact 230 relative to the housing 210.

In this embodiment, as shown in fig. 5 and 6, the bracket 110 is further provided with a dodging hole 115 in a penetrating manner, the dodging hole 115 is located between the first rotating shaft 112 and the third rotating shaft 114, and one end of the second elastic member 150 passes through the dodging hole 115 and abuts against the moving contact 230, so that the second elastic member 150 can make the moving contact 230 abut against the bracket 110 from one end of the moving contact 230 away from the fixed contact 240 (or one end of the moving contact 230 near the main shaft 111 of the bracket 110), thereby providing the contact pressure during closing and the restoring force during opening for the moving contact 230 through the second elastic member 150.

Alternatively, as shown in fig. 1 to 3, the operating mechanism 100 further includes a transmission member 160 rotatably disposed in the housing 210, the handle 220 is in transmission connection with the jump button 130 through the transmission member 160, the transmission member 160 is connected with the jump button 130 through a first link 161, and the handle 220 is connected with the transmission member 160 through a gear 162 or a second link. Illustratively, in the present embodiment, a first transmission gear 162 is disposed on the handle 220, and a second transmission gear 162 is disposed on the transmission member 160 correspondingly, such that the handle 220 is connected to the transmission member 160 through the gear 162. The transmission of the gear 162 can save more space than the transmission of the link.

In order to enable the transmission member 160 to recover its own initial state during the closing and opening processes of the moving contact 230 and the fixed contact 240, as shown in fig. 3, in this embodiment, the transmission member 160 is provided with a mounting shaft, and the operating mechanism 100 further includes a third elastic member 170 sleeved on the mounting shaft, where one end of the third elastic member 170 abuts against the transmission member 160, and the other end abuts against the housing 210, and the third elastic member 170 is used to provide a restoring force for the movement of the transmission member 160 relative to the housing 210.

In this embodiment, as shown in fig. 1 to 3, the circuit breaker 200 further includes a thermal trip 270, the moving contact 230 is connected to a fixed end of the thermal trip 270 through a first flexible connection line 271, and a movable end of the thermal trip 270 is connected to the input terminal 250 through a second flexible connection line 272. The thermal trip 270 may be a bimetal, for example, made of a material having a thermal expansion coefficient, so that when the temperature increases, the bimetal is deformed by thermal expansion, and the moving contact 230 is driven to move towards a side far from the fixed contact 240, so that the circuit breaker 200 is opened.

In the spatial arrangement of the thermal trip 270, the movable contact 230 and the input terminal 250 in the housing 210, since the fixed end of the thermal trip 270 is connected to the movable contact 230 through the first flexible connection line 271 and the movable end of the thermal trip 270 is connected to the input terminal 250 through the second flexible connection line 272, the thermal trip 270, the movable contact 230 and the input terminal 250 need not have an absolute positional correspondence relationship, and need only be as close to each other as possible to facilitate connection through the flexible connection line. The first and second flexible wires 271 and 272 may be made of a material having good conductive properties, such as copper, silver, or the like.

The transmission action of the operating mechanism 100 is explained with the circuit breaker 200 in an initial state when the circuit breaker 200 is in a breaking state, when the circuit breaker 200 is to be switched on, the trip member 130 and the latch member 120 are buckled, so that the trip member 130 and the latch member 120, the trip member 130 and the bracket 110 and the latch member 120 and the bracket 110 are all fixed, and because one end of the moving contact 230 away from the fixed contact 240 (or one end of the moving contact 230 close to the main shaft 111 of the bracket 110) is abutted against the bracket 110, the moving contact 230 and the bracket 110 are fixed, in other words, the bracket 110, the latch member 120, the trip member 130 and the moving contact 230 form a whole, so that when the handle 220 is driven by external force, the moving contact 230 can be driven to move towards one side close to the fixed contact 240 through the cooperation of the bracket 110, the latch member 120 and the trip member 130; when the breaker 200 encounters a fault and needs to be opened, the thermal trip 270 or the electromagnetic trip 280 pushes the latch 120 to rotate relative to the bracket 110, so that the latch 130 and the latch 120 are disengaged, and the bracket 110, the latch 120, the latch 130 and the moving contact 230 are separated from each other, the latch 120 is reset relative to the bracket 110 under the action of the first elastic member 140, the moving contact 230 is reset relative to the housing 210 under the action of the second elastic member 150, and the transmission member 160 drives the latch 130 to reset relative to the housing 210 under the action of the third elastic member 170, so that the bracket 110 is reset relative to the housing 210 under the combined action of the latch 120, the moving contact 230 and the latch 130.

In this embodiment, as shown in fig. 1 to 3, the circuit breaker 200 further includes an arc extinguishing mechanism 290, the arc extinguishing mechanism 290 includes an arc striking plate 291 and an arc extinguishing chamber 292 sequentially disposed along a side of the moving contact 230 away from the operating mechanism 100, a fixed end of the thermal trip 270 is further connected with one end of the arc striking plate 291 away from the arc extinguishing chamber 292, an adjusting member 211 is disposed on the housing 210, and an end of the adjusting member 211 abuts against the arc striking plate 291 for adjusting a distance between a movable end of the thermal trip 270 and the operating mechanism 100, so that an overload protection action current of the circuit breaker 200 can be adjusted. Wherein the adjustment member 211 may be an adjustment screw to adjust the distance between the movable end of the thermal trip 270 and the operating mechanism 100 by screwing.

It should be noted that, when the arc extinguishing mechanism 290, the moving contact 230 and the fixed contact 240 in the housing 210 are spatially arranged, because the arc generated between the moving contact 230 and the fixed contact 240 during the opening operation needs to be introduced into the arc extinguishing mechanism 290 to extinguish the arc through the arc extinguishing mechanism 290, the arc extinguishing mechanism 290 should be disposed corresponding to the moving contact 230 and the fixed contact 240, for example, the arc striking plate 291 may be disposed at two opposite sides of the opening between the moving contact 230 and the fixed contact 240 in the opening state of the circuit breaker 200, and the arc striking plate 291 may extend along one side of the moving contact 230 away from the operating mechanism 100, and the arc extinguishing chamber 292 may be disposed at one side of the moving contact 230 (or the arc striking plate 291) away from the operating mechanism 100, so that during the opening operation of the circuit breaker 200, the arc generated between the moving contact 230 and the fixed contact 240 can be guided into the arc extinguishing chamber 292 through the arc striking plate 291 to be rapidly extinguished, thereby reducing the electrical loss generated to the circuit breaker 200 and further improving the service life of the circuit breaker 200.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an operating device (100), its characterized in that, including setting up support (110), latch (120) and jump fastener (130) in casing (210), support (110) with casing (210) rotate and are connected, latch (120) jump fastener (130) with moving contact (230) in casing (210) rotate respectively set up in the same side of support (110), jump fastener (130) be used for with latch (120) lock, handle (220) in casing (210) with jump fastener (130) transmission connection, handle (220) are driven through support (110) latch (120) with jump fastener (130) cooperation jointly drives moving contact (230) with fixed contact (240) in casing (210) are closed or are opened.

2. The operating mechanism (100) according to claim 1, wherein the support (110) is provided with a main shaft (111), a first rotating shaft (112), a second rotating shaft (113) and a third rotating shaft (114) respectively, the main shaft (111) and the first rotating shaft (112) are coaxially arranged on two opposite sides of the support (110) respectively, the first rotating shaft (112), the second rotating shaft (113) and the third rotating shaft (114) are arranged on the same side of the support (110) respectively at intervals, the support (110) is rotationally connected with the housing (210) through the main shaft (111), the locking piece (120) is rotationally connected with the support (110) through the first rotating shaft (112), the locking piece (130) is rotationally connected with the support (110) through the second rotating shaft (113), and the moving contact (230) is rotationally connected with the support (110) through the third rotating shaft (114).

3. The operating mechanism (100) according to claim 2, wherein the operating mechanism (100) further comprises a first elastic member (140) sleeved on the first rotating shaft (112), one end of the first elastic member (140) abuts against the locking member (120), the other end abuts against the bracket (110), and the first elastic member (140) is used for providing a restoring force for the movement of the locking member (120) relative to the bracket (110).

4. The operating mechanism (100) according to claim 2, wherein the operating mechanism (100) further comprises a second elastic member (150) sleeved on the main shaft (111), one end of the second elastic member (150) abuts against the moving contact (230), the other end abuts against the housing (210), and the second elastic member (150) is used for providing a restoring force for the movement of the moving contact (230) relative to the housing (210).

5. The operating mechanism (100) according to claim 4, wherein the support (110) is further provided with a through hole (115), the through hole (115) is located between the first rotating shaft (112) and the third rotating shaft (114), and one end of the second elastic member (150) passes through the through hole (115) to abut against the moving contact (230), so that the moving contact (230) abuts against the support (110).

6. The operating mechanism (100) according to claim 1, wherein the operating mechanism (100) further comprises a transmission member (160) rotatably arranged in the housing (210), the handle (220) is in transmission connection with the jump button (130) through the transmission member (160), the transmission member (160) is connected with the jump button (130) through a first link (161), and the handle (220) is connected with the transmission member (160) through a gear (162) or a second link.

7. The operating mechanism (100) according to claim 6, wherein the transmission member (160) is provided with a mounting shaft, the operating mechanism (100) further comprises a third elastic member (170) sleeved on the mounting shaft, one end of the third elastic member (170) abuts against the transmission member (160), the other end abuts against the housing (210), and the third elastic member (170) is used for providing a restoring force for the movement of the transmission member (160) relative to the housing (210).

8. A circuit breaker (200) characterized by comprising a shell (210), and a handle (220), a moving contact (230), a fixed contact (240), an input terminal (250), an output terminal (260) and an operating mechanism (100) according to any one of claims 1-7, wherein the handle (220) is arranged in the shell (210), the input terminal (250) and the output terminal (260) are respectively used for being connected with a distribution box in an inserting mode, and the handle (220) is driven to drive the moving contact (230) and the fixed contact (240) to be switched on or off through the operating mechanism (100);

the input terminal (250) and the output terminal (260) are respectively arranged on the same side of the shell (210) at intervals, the handle (220) is arranged on one side of the shell (210) opposite to the input terminal (250), and when the circuit breaker (200) is in closing, one surface of the handle (220) deviating from the shell (210) is flush with one surface of the shell (210) deviating from the input terminal (250).

9. The circuit breaker (200) of claim 8, wherein the circuit breaker (200) further comprises a thermal trip (270), the moving contact (230) being connected to a fixed end of the thermal trip (270) by a first flexible connection line (271), the moving end of the thermal trip (270) being connected to the input terminal (250) by a second flexible connection line (272).

10. The circuit breaker (200) of claim 9, wherein the circuit breaker (200) further comprises an arc extinguishing mechanism (290), the arc extinguishing mechanism (290) comprises an arc striking plate (291) and an arc extinguishing chamber (292) which are sequentially arranged along one side, away from the operating mechanism (100), of the moving contact (230), the fixed end of the thermal trip (270) is further connected with one end, away from the arc extinguishing chamber (292), of the arc striking plate (291), an adjusting piece (211) is arranged on the shell (210), and the end of the adjusting piece (211) abuts against the arc striking plate (291) to adjust the distance between the movable end of the thermal trip (270) and the operating mechanism (100).

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