CN216902745U - Operating device 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 lock catch piece and a tripping piece which are arranged in a shell, the support is rotatably connected with the shell, the lock catch piece, the tripping piece and a moving contact in the shell are respectively rotatably arranged on the same side of the support, the tripping piece is used for being buckled with the lock catch piece, a handle in the shell is in transmission connection with the tripping 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 common cooperation of the support, the lock catch piece and the tripping piece. The circuit breaker comprises the operating mechanism. The operating mechanism and the circuit breaker can solve the problem that the traditional circuit breaker is large in size.

Description

Operating device and circuit breaker

Technical Field

The utility model 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 standard of people are remarkably improved, and the electricity utilization safety is more comprehensively known. In order to increase the safety of the electricity consumption, a circuit breaker is usually connected to the electricity consumption circuit. The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. When faults such as electric leakage, overload, short circuit and the like occur in the system, the circuit breaker can quickly cut off a fault circuit in the system or cut off the power supply of the whole power supply so as to prevent the expansion of the faults and avoid causing huge economic loss and casualties.

The distribution box is the last level of distribution facility in the power supply system for realize the distribution and the protection of electric energy, inlay in the wall body, the volume is less. Traditional circuit breaker wholly is type of protruding, and its binding post adopts the screw wiring usually, and circuit breaker itself is highly great, and receives the restriction of wiring direction, and the height that needs during the wiring installation is also very big. The circuit breaker adopting the screw wiring can occupy the operation space of the operation handle of the circuit breaker. In order to ensure that the operating handle has enough moving space, the whole volume of the circuit breaker is increased. The small-sized distribution box (for example, 86 bottom box, 118 bottom box, 120 bottom box, etc. are arranged as the distribution box) has a high demand for miniaturization of the circuit breaker arranged therein, and such a circuit breaker is difficult to meet the demand due to the defect of its own height, and therefore, a more miniaturized circuit breaker is required to meet the market demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an operating mechanism and a circuit breaker, which can solve the problem that the traditional circuit breaker is large in size.

The embodiment of the utility model is realized by the following steps:

in one aspect of the embodiment of the utility model, an operating mechanism is provided, which includes a support, a latch member and a trip member, which are arranged in a housing, wherein the support is rotatably connected with the housing, the latch member, the trip member and a movable contact in the housing are respectively rotatably arranged on the same side of the support, the trip member is used for being buckled with the latch member, a handle in the housing is in transmission connection with the trip member, and the handle is driven to drive the movable contact to be switched on or off with a fixed contact in the housing through the cooperation of the support, the latch member and the trip member. The operating mechanism can solve the problem that the traditional circuit breaker is large in size.

Optionally, a main shaft, a first rotating shaft, a second rotating shaft and a third rotating shaft are respectively arranged on the support, the main shaft and the first rotating shaft are respectively coaxially arranged on two opposite sides of the support, the first rotating shaft, the second rotating shaft and the third rotating shaft are respectively arranged on the same side of the support at intervals, the support is rotatably connected with the shell through the main shaft, the locking piece is rotatably connected with the support through the first rotating shaft, the tripping piece is rotatably connected with the support through the second rotating shaft, and the moving contact is rotatably connected with the support through the third rotating shaft.

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

Optionally, the operating mechanism further includes 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 housing, and the second elastic member is configured to provide a restoring force for the movement of the moving contact relative to the housing.

Optionally, an avoiding hole is further formed in the support in a penetrating manner, the avoiding hole is located between the first rotating shaft and the third rotating shaft, and one end of the second elastic element penetrates through the avoiding hole and abuts against the moving contact, so that the moving contact abuts against the support.

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

Optionally, an installation shaft is arranged on the transmission member, the operating mechanism further includes a third elastic member sleeved on the installation shaft, one end of the third elastic member abuts against the transmission member, the other end of the third elastic member abuts against the housing, and the third elastic member is used for providing a restoring force for the transmission member to move relative to the housing.

On the other hand, the embodiment of the utility model provides a circuit breaker, which comprises a shell, and a handle, a moving contact, a static 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 plugged with a distribution box, and the handle is driven to drive the moving contact and the static contact to be switched on or switched off through the operating mechanism; 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, opposite to the input terminal, of the shell, and when the circuit breaker is closed, one side, deviating from the shell, of the handle is flush with one side, far away from the input terminal, of the shell. The operating mechanism can solve the problem that the traditional circuit breaker is large in size.

Optionally, the circuit breaker further includes a thermal release, the moving contact is connected to a fixed end of the thermal release through a first flexible connecting line, and a moving end of the thermal release is connected to the input terminal through a second flexible connecting line.

Optionally, the circuit breaker still includes arc extinguishing mechanism, arc extinguishing mechanism includes run-on plate and the explosion chamber that sets gradually along one side that the moving contact kept away from operating device, the stiff end of thermal release still with the run-on plate 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 run-on plate supports and holds, is used for adjusting the loose end of thermal release with distance between the operating device.

The embodiment of the utility model has the beneficial effects that:

the operating mechanism comprises a support, a lock catch piece and a tripping piece which are arranged in a shell, the support is rotatably connected with the shell, the lock catch piece, the tripping piece and a moving contact in the shell are respectively rotatably arranged on the same side of the support, the tripping piece is used for being buckled with the lock catch piece, a handle in the shell is in transmission connection with the tripping 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 common cooperation of the support, the lock catch piece and the tripping piece. Wherein, the moving contact in hasp piece, jump fastener and the casing rotates respectively and sets up in same one side of support, can make this operating device's concrete structure and installation cooperation simpler to make this operating device's occupation space littleer, the transmission action is simpler simultaneously, helps realizing the miniaturization of circuit breaker, is favorable to realizing automated production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 cross-sectional view of a circuit breaker in an open state according to an embodiment of the present invention;

fig. 2 is one of cross-sectional views of a circuit breaker in a closing 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 movable contact according to an embodiment of the present invention;

fig. 5 is a second schematic structural diagram of an operating mechanism and a movable contact according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a bracket of the operating mechanism provided in the embodiment of the utility model;

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 scaffold; 111-main shaft; 112-a first shaft; 113-a second shaft; 114-a third shaft; 115-avoiding holes; 120-a catch member; 130-snap fasteners; 140-a first resilient member; 150-a second elastic member; 160-a transmission; 161-a first link; 162-gear; 170-a third elastic member; 200-a circuit breaker; 210-a housing; 211-an adjustment member; 220-a handle; 230-moving contact; 240-fixed contact; 250-an input terminal; 260-output terminals; 270-thermal trip; 271-a first flexible connection line; 272-a second flexible connection line; 280-an electromagnetic release; 290-arc extinguishing mechanism; 291-arc striking plate; 292-arc chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 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 figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the 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 otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, an embodiment of the present application provides a circuit breaker 200, including a housing 210, and a handle 220, a movable contact 230, a fixed contact 240, an input terminal 250, an output terminal 260, and an operating mechanism 100, which are disposed in the housing 210, where the input terminal 250 and the output terminal 260 are respectively used for being plugged into a distribution box, and the handle 220 is driven to drive the movable contact 230 and the fixed contact 240 to switch on or switch off through the operating mechanism 100; the input terminal 250 and the output terminal 260 are respectively disposed at the same side of the housing 210 at an interval, the handle 220 is disposed at one side of the housing 210 opposite to the input terminal 250, and when the circuit breaker 200 is closed, a surface of the handle 220 facing away from the housing 210 is flush with a surface of the housing 210 away from the input terminal 250. The operating mechanism 100 can solve the problem of the large size of the conventional circuit breaker.

It should be noted that, as shown in fig. 1 to fig. 3, the housing 210 may be two sub-housings 210 disposed oppositely, and the two sub-housings 210 together enclose an accommodating space for accommodating 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 input and output terminals 250 and 260 disposed within the housing 210. for example, the input and output terminals 250 and 260 may be plug terminals such that the input terminal 250 can be plugged into a row of input terminals within the distribution box and the output terminal 260 can be plugged into a row of output terminals within the distribution box to plug the circuit breaker 200 into a consumer 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 movable contact 230, a fixed contact 240 and an operating mechanism 100, the handle 220 is in transmission connection with the movable contact 230 through the operating mechanism 100, the movable contact 230 is connected with an input terminal 250, and the fixed contact 240 is connected with an output terminal 260, so that when the handle 220 is driven by an external force, the operating mechanism 100 is driven to move, thereby driving the movable contact 230 and the fixed contact 240 to contact or separate, and further enabling the circuit breaker 200 to realize closing or opening. The handle 220 is in transmission connection with the movable contact 230 through the operating mechanism 100, and may establish a transmission relationship all the time or only when needed.

Specifically, as shown in fig. 1 to 3, when the movable contact 230 moves toward a side close to the fixed contact 240 to make the movable contact 230 contact with the fixed contact 240, the circuit breaker 200 can 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 movable contact 230, the output terminal 260, and the output terminal row can be switched on; when the moving contact 230 moves towards a side away from the fixed contact 240 to separate the moving contact 230 from the fixed contact 240, the circuit breaker 200 can be switched off, 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 can be disconnected, so that switching between a conducting state and a disconnecting state of a load is realized through the circuit breaker 200.

In addition, the input terminal 250 and the output terminal 260 are respectively disposed at intervals on the same side of the housing 210 (as shown in fig. 1 to 3, the input terminal 250 and the output terminal 260 are respectively disposed below the housing 210), so that the function of entering from the same side and exiting from the same side can be realized. The conducting direction of the circuit breaker 200 (or the side of the housing 210 where the input terminal 250 and the output terminal 260 are provided) is used as a rear end, i.e., a rear-to-rear connection form is formed, so as to improve the convenience of connection when the circuit breaker 200 is plugged into a distribution box. In addition, the input terminal 250 and the output terminal 260 are arranged at intervals, so that the distance between the incoming line and the outgoing line can be increased, and the 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 on a side of the housing 210 opposite to the input terminal 250, and when the circuit breaker 200 is closed, a surface of the handle 220 facing away from the housing 210 is flush with a surface of the housing 210 away from the input terminal 250; when the circuit breaker 200 is opened, the side of the handle 220 facing away from the housing 210 forms an angle with the side of the housing 210 away from the input terminal 250. On the basis of ensuring that the handle 220 can drive the moving contact 230 and the fixed contact 240 to be switched on or switched off 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 volume of the circuit breaker 200 is. Illustratively, the included angle may be less than 30 °.

As shown in fig. 3 to 5, the operating mechanism 100 includes a bracket 110, a latch 120, and a trip 130 disposed in a housing 210, the bracket 110 is rotatably connected to the housing 210, the latch 120, the trip 130, and a movable contact 230 in the housing 210 are respectively rotatably disposed on the same side of the bracket 110, the trip 130 is configured to be fastened to the latch 120, a handle 220 in the housing 210 is in transmission connection with the trip 130, and the handle 220 is driven to drive the movable contact 230 to close or open a static contact 240 in the housing 210 through cooperation of the bracket 110, the latch 120, and the trip 130. The movable contacts 230 in the locking element 120, the trip element 130 and the housing 210 are respectively rotatably disposed on the same side of the bracket 110, so that the specific structure and the installation cooperation of the operating mechanism 100 are simpler, the occupied space of the operating mechanism 100 is smaller, the transmission action is simpler, the miniaturization of the circuit breaker 200 is facilitated, and the realization of automatic production is facilitated.

Specifically, as shown in fig. 4 to 6, the bracket 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 disposed on two opposite sides of the bracket 110, the first rotating shaft 112, the second rotating shaft 113 and the third rotating shaft 114 are respectively disposed on the same side of the bracket 110 at intervals, the bracket 110 is rotatably connected to the housing 210 through the main shaft 111, the locking member 120 is rotatably connected to the bracket 110 through the first rotating shaft 112, the snap-fastener 130 is rotatably connected to the bracket 110 through the second rotating shaft 113, and the movable contact 230 is rotatably connected to the bracket 110 through the third rotating shaft 114.

In order to enable the locking element 120 to recover its initial state during the switching on and off processes of the movable contact 230 and the fixed contact 240, as shown in fig. 3 to 5, in the present embodiment, the operating mechanism 100 further includes a first elastic element 140 sleeved on the first rotating shaft 112, one end of the first elastic element 140 abuts against the locking element 120, the other end abuts against the support 110, and the first elastic element 140 is configured to provide a restoring force for the movement of the locking element 120 relative to the support 110.

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

In this embodiment, as shown in fig. 5 and fig. 6, an avoiding hole 115 is further disposed through the support 110, the avoiding 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 avoiding hole 115 and abuts against the movable contact 230, so that the second elastic member 150 can enable one end of the movable contact 230 far away from the fixed contact 240 (or one end of the movable contact 230 close to the main shaft 111 of the support 110) and the support 110 to abut against each other, thereby providing a contact pressure during closing and a reset force during opening for the movable contact 230 through the second elastic member 150.

Optionally, 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 trip member 130 through the transmission member 160, the transmission member 160 is connected with the trip member 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 correspondingly disposed on the transmission member 160, so that the handle 220 and the transmission member 160 are connected through the gear 162. Compared with a transmission mode of a connecting rod, the transmission mode of the gear 162 can save the moving space.

In order to enable the transmission member 160 to recover its initial state during the switching on and switching off processes of the movable contact 230 and the fixed contact 240, as shown in fig. 3, in this embodiment, an installation shaft is disposed on the transmission member 160, the operating mechanism 100 further includes a third elastic member 170 sleeved on the installation shaft, 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 fig. 3, the circuit breaker 200 further includes a thermal trip 270, the movable contact 230 is connected to a fixed end of the thermal trip 270 through a first soft connection line 271, and a movable end of the thermal trip 270 is connected to the input terminal 250 through a second soft connection line 272. The thermal release 270 may be a bimetal, for example, made of a material with a thermal expansion coefficient, so that when the temperature rises, the bimetal is deformed by thermal expansion, and the moving contact 230 is driven to move toward a side away from the stationary contact 240, so as to open the circuit breaker 200.

It should be noted that, when the thermal trip 270, the movable contact 230, and the input terminal 250 in the housing 210 are spatially arranged, since the fixed end of the thermal trip 270 is connected to the movable contact 230 through the first flexible connecting line 271, and the movable end of the thermal trip 270 is connected to the input terminal 250 through the second flexible connecting line 272, the thermal trip 270, the movable contact 230, and the input terminal 250 are not required to have an absolute position corresponding relationship, and only need to be as close as possible to each other for connection through the flexible connecting lines. Here, the first and second flexible connection lines 271 and 272 may be made of a material having a good conductive property, such as copper, silver, or the like.

Here, the operation of the operation mechanism 100 will be explained with the circuit breaker 200 being in the open state as the initial state, and when the circuit breaker 200 is to be closed, because the buckle 130 is fastened to the locking element 120, the position between the buckle 130 and the bracket 110, and the position between the locking element 120 and the bracket 110 are all fixed, and because one end of the movable contact 230 far away from the fixed contact 240 (or one end of the movable contact 230 close to the main shaft 111 of the bracket 110) is abutted against the bracket 110, therefore, the movable contact 230 and the support 110 are also fixed, in other words, the support 110, the locking element 120, the trip element 130 and the movable contact 230 form a whole, when the handle 220 is driven by an external force, the movable contact 230 can be driven to move towards one side close to the fixed contact 240 by the cooperation of the bracket 110, the locking element 120 and the tripping element 130; when the circuit breaker 200 encounters a fault and needs to be opened, the thermal release 270 or the electromagnetic release 280 both pushes the locking element 120 to rotate relative to the bracket 110, so that the trip element 130 and the locking element 120 are disengaged, the bracket 110, the locking element 120, the trip element 130 and the movable contact 230 are separated from each other, the locking element 120 resets relative to the bracket 110 under the action of the first elastic element 140, the movable contact 230 resets relative to the housing 210 under the action of the second elastic element 150, and the transmission element 160 drives the trip element 130 to reset relative to the housing 210 under the action of the third elastic element 170, so that the bracket 110 resets relative to the housing 210 under the combined action of the locking element 120, the movable contact 230 and the trip element 130.

In this embodiment, as shown in fig. 1 to fig. 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 one side of the movable contact 230 away from the operating mechanism 100, a fixed end of the thermal trip 270 is further connected to one end of the arc striking plate 291 away from the arc extinguishing chamber 292, the housing 210 is provided with an adjusting member 211, 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 as to adjust an overload protection operating current of the circuit breaker 200. The adjusting member 211 may be an adjusting screw to adjust the distance between the movable end of the thermal release 270 and the operating mechanism 100 by screwing.

It should be noted that, when the arc extinguishing mechanism 290, the movable contact 230, and the fixed contact 240 in the housing 210 are spatially arranged, since the arc generated between the movable contact 230 and the fixed contact 240 during opening needs to be introduced into the arc extinguishing mechanism 290 for arc extinction through the arc extinguishing mechanism 290, the arc extinguishing mechanism 290 should be disposed corresponding to the movable contact 230 and the fixed contact 240, for example, the arc striking plates 291 may be disposed on two opposite sides of an opening between the movable 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 a side of the movable contact 230 away from the operating mechanism 100, and the arc extinguishing chamber 292 may be disposed on a side of the movable contact 230 (or the arc striking plate 291) away from the operating mechanism 100, so that during opening of the circuit breaker 200, the arc generated between the movable contact 230 and the fixed contact 240 can be guided into the arc extinguishing chamber 292 through the arc striking plate 291 for rapid extinguishing, thereby reducing the electrical loss of the arc to the circuit breaker 200 and further improving the service life of the circuit breaker 200.

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 (10)

1. An operating mechanism (100) is characterized by comprising a support (110), a lock catch piece (120) and a tripping piece (130) which are arranged in a shell (210), wherein the support (110) is rotatably connected with the shell (210), the lock catch piece (120), the tripping piece (130) and a moving contact (230) in the shell (210) are respectively rotatably arranged on the same side of the support (110), the tripping piece (130) is used for being buckled with the lock catch piece (120), a handle (220) in the shell (210) is in transmission connection with the tripping piece (130), and the handle (220) is driven to drive the moving contact (230) to be switched on or switched off with a static contact (240) in the shell (210) through the support (110), the lock catch piece (120) and the tripping piece (130) in a matched mode.

2. Operating mechanism (100) according to claim 1, characterised in that a main shaft (111), a first rotating shaft (112), a second rotating shaft (113) and a third rotating shaft (114) are arranged on the bracket (110) respectively, the main shaft (111) and the first rotating shaft (112) are coaxially arranged on two opposite sides of the bracket (110) respectively, the first rotating shaft (112), the second rotating shaft (113) and the third rotating shaft (114) are respectively arranged on the same side of the bracket (110) at intervals, the bracket (110) is rotationally connected with the shell (210) through the main shaft (111), the locking fastener (120) is rotationally connected with the bracket (110) through the first rotating shaft (112), the jump buckle piece (130) is rotatably connected with the bracket (110) through the second rotating shaft (113), the movable contact (230) is rotatably connected with the bracket (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) disposed on the first rotating shaft (112), 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 configured to provide a restoring force for the movement of the latch member (120) relative to the bracket (110).

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

5. The operating mechanism (100) according to claim 4, wherein an avoiding hole (115) is further formed through the bracket (110), the avoiding 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 avoiding hole (115) and abuts against the movable contact (230), so that the movable contact (230) abuts against the bracket (110).

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

7. The operating mechanism (100) according to claim 6, wherein a mounting shaft is disposed on the transmission member (160), 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), and 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) is characterized by comprising a shell (210), a handle (220), a movable contact (230), a fixed contact (240), an input terminal (250), an output terminal (260) and the operating mechanism (100) as claimed in any one of claims 1 to 7, wherein the handle (210) is arranged in the shell (210), the input terminal (250) and the output terminal (260) are respectively used for being plugged with a distribution box, and the handle (220) is driven to drive the movable 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 at the same side of the shell (210) at intervals, the handle (220) is arranged at one side of the shell (210) opposite to the input terminal (250), and when the circuit breaker (200) is closed, one surface of the handle (220) departing from the shell (210) is flush with one surface of the shell (210) far away from the input terminal (250).

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

10. The circuit breaker (200) according to 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 of the movable contact (230) far away from the operating mechanism (100), the fixed end of the thermal release (270) is further connected with one end of the arc striking plate (291) far away from the arc extinguishing chamber (292), the housing (210) is provided with an adjusting member (211), and the end of the adjusting member (211) abuts against the arc striking plate (291) and is used for adjusting the distance between the movable end of the thermal release (270) and the operating mechanism (100).

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