CN115881488B

CN115881488B - Circuit breaker

Info

Publication number: CN115881488B
Application number: CN202211608686.3A
Authority: CN
Inventors: 罗志君; 卢科军; 周长青; 付浩
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-09-22
Anticipated expiration: 2042-12-14
Also published as: CN115881488A

Abstract

The application relates to the technical field of piezoelectric devices, in particular to a circuit breaker. The circuit breaker includes the base member, sets up in the stationary contact of base member, moving contact, and: the switching-on and switching-off mechanism comprises a first transmission piece and a second transmission piece, wherein the first transmission piece and the second transmission piece are movably arranged on the base body along a first direction, the first transmission piece is connected with the moving contact, the moving contact can be driven to be connected with the fixed contact by the first transmission piece moving along the first direction, and the moving contact can be pushed to be separated from the fixed contact by the second transmission piece moving along the first direction; the deflector rod is movably arranged on the base body along the first path so as to stir the first transmission piece to move; the electric mechanism is used for driving the deflector rod to move; a shifting block movably connected to the second transmission member and having a retracted position and a blocking position; the shifting block gives a first path when in the avoiding position so as to allow the shifting rod to shift the first transmission part; the shifting block is blocked on the first path when in the blocking position, so that the shifting rod can shift the second transmission part through the shifting block when moving along the first path.

Description

Circuit breaker

Technical Field

The application relates to the technical field of piezoelectric devices, in particular to a circuit breaker.

Background

With the development of technology, the types and the number of electrical equipment are increased, the electrical equipment is gradually miniaturized and intelligentized, and the traditional power supply mode of connecting a plurality of sockets by a terminal breaker is difficult to meet the equipment power supply requirement and the equipment protection requirement. In order to meet the power supply requirements of different electrical equipment, the plug-in circuit breaker is widely applied, and can be plugged in an installation position like a plug to be quickly and conveniently connected to a circuit, and can be pulled out of the installation position like the plug to be quickly and conveniently detached from the circuit.

The existing circuit breaker drives the moving contact to contact or separate from the fixed contact through the handle mechanism so as to realize manual opening and closing, and drives the handle mechanism through the arrangement of the electric mechanism so as to realize automatic opening and closing of the circuit breaker. Because the moving contact and the fixed contact are easy to generate electric arcs in the separation process to cause the breaker to be damaged, the moving contact and the fixed contact are required to be rapidly separated, and in order to realize rapid disconnection during automatic opening, another electric mechanism is sometimes required to be additionally arranged to realize rapid opening, for example, an electromagnetic mechanism is additionally arranged to directly push the moving contact so as to enable the moving contact to be rapidly separated from the fixed contact. This results in many functional components in the circuit breaker, and the structure is complicated, and it is difficult to consider the development trend of automatic control of the circuit breaker and miniaturization of electrical equipment.

Disclosure of Invention

The application aims to provide a circuit breaker, so that the circuit breaker meets the requirements of automation control and miniaturization.

Embodiments of the present application are implemented as follows:

in a first aspect, an embodiment of the present application provides a circuit breaker, including: a base; the fixed contact is fixedly arranged on the base body; a moving contact movably disposed in the base; the switching-on and switching-off mechanism comprises a first transmission piece and a second transmission piece, wherein the first transmission piece and the second transmission piece are movably arranged on the base body along a first direction, the first transmission piece is connected with the moving contact, the first transmission piece can drive the moving contact to be connected with the fixed contact along the first direction, and the second transmission piece can push the moving contact to be separated from the fixed contact along the first direction; the deflector rod is movably arranged on the base body along a first path, and the deflector rod can stir the first transmission piece to move along the first direction when moving along the first path; the electric mechanism is used for driving the deflector rod to move along the first path; a shifting block movably connected to the second transmission member and having a retracted position and a blocking position; the shifting block lets out the first path when in the avoiding position, so that the shifting rod moves along the first path to shift the first transmission part; the shifting block is blocked on the first path when in the blocking position, so that the second transmission piece is shifted through the shifting block when the shifting rod moves along the first path.

According to the circuit breaker provided by the application, the electric mechanism drives the deflector rod to move along the first path and is matched with the deflector block to alternatively drive the first transmission part and the second transmission part to move along the first direction, so that the first transmission part drives the moving contact to be connected with the fixed contact, or the second transmission part drives the moving contact to be separated from the fixed contact, switching on can be realized by only one electric mechanism, and the moving contact is directly driven to realize quick switching off.

In one embodiment of the application, the circuit breaker further comprises: the first rotating shaft is fixedly arranged on the base body, and the first transmission piece and the second transmission piece are rotatably arranged on the first rotating shaft along the first direction through the first rotating shaft; the first transmission part is provided with a chute, one end of the deflector rod is connected with the electric mechanism, the other end of the deflector rod moves in the chute, and the moving track of the other end of the deflector rod is the first path.

In the technical scheme, through setting up first driving medium, second driving medium into the structure of setting up around first pivot coaxial to set up the spout on first driving medium, utilize driving lever and spout cooperation, when the driving lever moves to the one end of spout along the spout and offsets with the terminal surface of spout, can stir first driving medium and rotate, if the driving lever is in on the first route, the driving lever is intercepted by the driving lever when removing along the spout, and the driving lever does not offset with the terminal surface of spout, but stirs the second driving medium through the driving lever and rotate. In the scheme, the first transmission part and the second transmission part are configured to be coaxially and rotatably arranged, and the sliding groove arranged on the first transmission part is matched with the deflector rod, so that the moving track of the deflector rod is limited, namely the first path is limited, the deflector rod is not required to be additionally arranged or limited on the shell, only the electric mechanism and the sliding groove are required to be connected, and the whole structure is simple. In the scheme, when the deflector rod moves, the first transmission part and/or the second transmission part are/is stirred to rotate, and the moving contact is driven by the rotation of the first transmission part and/or the second transmission part, so that the planar space occupied by the first transmission part and the second transmission part is reduced, the space required by the movement of the first transmission part and the second transmission part is approximately the same as the occupied space, and the opening and closing mechanism is compact in structure and small in occupied space.

In one embodiment of the application, the dial is rotatably connected to the second transmission member, the dial crossing the chute in the blocking position and the dial leaving the chute in the clear position.

In the technical scheme, the shifting block is rotatably connected to the second transmission piece, so that the occupied space of the shifting block is small, the control mode is simple, and the automatic control requirement and the miniaturization requirement can be better considered.

In one embodiment of the present application, a receiving space is formed between the first transmission member and the second transmission member, a projection of the sliding groove on the second transmission member overlaps with the receiving space, the shifting block is located in the receiving space, and the other end of the shifting lever passes through the sliding groove and extends into the receiving space.

In the above technical scheme, through setting up accommodation space between second drive portion and second driving medium, make the projection of spout on the second driving medium overlap with accommodation space, the position of spout corresponds with accommodation space's position promptly, again with the shifting block setting in accommodation space, make the one end that the shifting lever inserted the spout extend to accommodation space in to, on the one hand, can realize that the shifting lever contradicts the terminal surface of shifting block or conflict spout in order to realize stirring first driving medium or second driving medium's demand, on the other hand, the shifting block is in accommodation space for the shifting block is difficult to be interfered by irrelevant part, has improved job stabilization nature.

In one embodiment of the application, the slide groove extends in the circumferential direction of the first transmission element.

In the technical scheme, the sliding groove is arranged to extend along the circumferential direction of the first transmission piece, when the second transmission piece is shifted by the shifting block, the shifting rod cannot interfere with the inner wall of the sliding groove when moving along the sliding groove, so that the second transmission piece is ensured to be shifted accurately and stably, and blocking is avoided.

In one embodiment of the present application, the electric mechanism includes a fixed portion and a movable portion, the movable portion being telescopically connected to the fixed portion, one end of the lever being connected to the movable portion; the movable part moves to drive the other end of the deflector rod to move in the chute so as to stir the first transmission piece or the second transmission piece to move along the first direction.

According to the technical scheme, the movable part of the electric mechanism is matched with the opening and closing mechanism through the deflector rod and the deflector block, so that the opening and closing mechanism is driven when the electric mechanism stretches out or is driven when the electric mechanism withdraws, the electric mechanism can be powered off in a normal state, kept in a stretched state or a withdrawn state, and only acts when the electric mechanism is electrified, so that the movable contact and the fixed contact are driven to be connected or separated. Therefore, in the scheme, the electric energy is saved through the cooperation of the electric mechanism, the deflector rod, the deflector block and the opening and closing mechanism and a simple control mode.

In one embodiment of the present application, the fixed portion includes a frame, a coil, a static iron core and an iron core spring, the movable portion includes a movable iron core, the frame is fixedly disposed on the base, the coil is wound on the frame, a through hole is formed in the frame, the static iron core is fixedly disposed at one end of the through hole, the movable iron core is movably disposed in the through hole, one end of the movable iron core is connected with the iron core spring, the other end of the movable iron core is provided with a movable member, one end of the driving lever is hinged to the movable member, and the movable iron core is movably driven to move by the driving lever.

In the technical scheme, the electric mechanism drives the movable iron core by utilizing electromagnetic force, the movable iron core acts sensitively when the movable iron core is electrified and powered off, and the quick driving can be realized, so that the speed of opening and closing is accelerated, the risk of generating electric arcs when opening and closing is reduced, and the safety of the circuit breaker is higher.

In one embodiment of the present application, the movable member includes a movable body and a positioning portion, the movable body is fixed at one end of the movable iron core far away from the stationary iron core, the shift lever is hinged with the movable body, and the positioning portion is connected with the movable body; the base body is provided with a positioning groove, the extending direction of the positioning groove is the same as the extending direction of the movable iron core, and the positioning part is slidably matched with the positioning groove.

In the technical scheme, the positioning part is slidably matched with the positioning groove so that the movable part stably moves, and the positioning part is positioned in the positioning groove when the electric mechanism is powered off so as to prevent the movable part from shifting and ensure the position and the action stability of the deflector rod.

In one embodiment of the application, the circuit breaker further comprises: the second rotating shaft is fixedly arranged on the base body, and the movable contact is rotatably connected with the base body through the second rotating shaft; the first connecting piece comprises a first end and a second end, wherein the first end is connected with the first transmission piece, and the second end is connected with the moving contact.

In the technical scheme, the first transmission piece, the first connecting piece, the moving contact and the base body form a four-bar mechanism, when the first transmission piece rotates around the first rotating shaft, the first connecting piece drives the moving contact to rotate around the second rotating shaft so that the moving contact is connected with or separated from the fixed contact, the four-bar mechanism is configured to be self-locked when the moving contact is connected with the fixed contact at a dead point, and the moving contact and the fixed contact are stably connected by utilizing self-locking force, so that the stability of the circuit breaker is improved.

In one embodiment of the present application, the second transmission member is provided with a first protrusion, and the first protrusion is provided on an outer circumferential surface of the second transmission member and extends in a radial direction of the second transmission member; when the second transmission part is rotated along the first direction, the first protrusion interferes with the moving contact to push the moving contact to be separated from the fixed contact.

In the technical scheme, the moving contact is directly pushed by the first bulge so as to break dead points of the four-bar mechanism, self-locking force is removed, and the moving contact is ensured to be separated from the fixed contact.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application 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 schematic diagram of an open state of a circuit breaker according to an embodiment of the present application;

fig. 2 is a schematic diagram of an on state of a circuit breaker according to an embodiment of the present application;

fig. 3 is a schematic diagram of an opening and closing mechanism according to an embodiment of the present application;

FIG. 4 is a schematic view illustrating a first perspective of a first driving member according to an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a second perspective of the first transmission member according to an embodiment of the present application;

FIG. 6 is a schematic view illustrating a first perspective of a second driving member according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating a second perspective view of a second driving member according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a dial block according to an embodiment of the present application;

FIG. 9 is a schematic view of a portion of a base for mounting a first transmission member and a second transmission member according to an embodiment of the present application;

fig. 10 is a schematic diagram of an opening and closing mechanism in an opening state according to an embodiment of the present application;

FIG. 11 is an enlarged view of a portion of FIG. 10;

FIG. 12 is a schematic diagram of a second transmission member in a brake-off state according to an embodiment of the present application;

FIG. 13 is an enlarged view of a portion of FIG. 12;

fig. 14 is a schematic diagram of a closing process of a closing/opening mechanism according to an embodiment of the present application;

FIG. 15 is an enlarged view of a portion of FIG. 14;

fig. 16 is a schematic diagram of an opening and closing mechanism in a closing state according to an embodiment of the present application;

FIG. 17 is an enlarged view of a portion of FIG. 16;

fig. 18 is a schematic diagram illustrating a switching-off process of a switching-off and switching-on mechanism according to an embodiment of the present application;

FIG. 19 is an enlarged view of a portion of FIG. 18;

FIG. 20 is a schematic diagram of an electric mechanism according to an embodiment of the present application;

FIG. 21 is a schematic view of a movable core according to an embodiment of the present application;

FIG. 22 is a schematic view of a movable member according to an embodiment of the present application

Fig. 23 is a schematic diagram of a first locking member and a second locking member of a locking mechanism according to an embodiment of the present application;

Fig. 24 is a schematic view of a first locking member locking and a second locking member unlocking of a locking mechanism according to an embodiment of the present application;

fig. 25 is a schematic diagram of unlocking both the first locking member and the second locking member of the locking mechanism according to an embodiment of the present application;

FIG. 26 is a schematic view of a second locking member in an unlocked position according to an embodiment of the present application;

FIG. 27 is a schematic view of a second locking member in a locked position according to an embodiment of the present application;

fig. 28 is a schematic view of a first perspective of an unlocking member according to an embodiment of the present application;

fig. 29 is a schematic view illustrating a second perspective of an unlocking member according to an embodiment of the present application;

FIG. 30 is a schematic view of a portion of a base for mounting a locking mechanism according to one embodiment of the present application;

FIG. 31 is a schematic view of a first locking member according to an embodiment of the present application;

FIG. 32 is a schematic view of a second locking member according to an embodiment of the present application;

FIG. 33 is a schematic view of a brake release member according to an embodiment of the present application;

fig. 34 is a schematic view of a closing member according to an embodiment of the present application;

fig. 35 is a schematic diagram of an opening and closing mechanism with a flexible connecting piece in an opening state according to another embodiment of the present application;

fig. 36 is a schematic view of an opening and closing mechanism with a flexible connecting piece in a closing state according to another embodiment of the present application;

Fig. 37 is a schematic diagram illustrating a switching-off process of a switching-off and switching-on mechanism with a flexible connection member according to another embodiment of the present application.

Icon: 1-a base body, 11-a clamping face, 12-a positioning groove, 13-a positioning key, 14-a first mounting hole, 15-a second mounting hole, 16-a first blocking face, 17-a second blocking face, 18-a first guiding face, 2-a fixed contact, 3-a moving contact, 31-a second rotating shaft, 32-a second protrusion, 4-a switching mechanism, 41-a first transmission member, 411-a first transmission portion, 4111-a second connecting hole, 4112-a third connecting hole, 4113-a notch, 41131-a first abutting face, 412-a second transmission portion, 4121-a first connecting hole, 4122-a chute, 4123-a first receiving face, 42-a second transmission member, 421-a second transmission body, 4211-a third protrusion, 42111-a second abutting face, 4212-first protrusion, 4213-third abutment surface, 4214-stopper, 4215-blind hole, 4216-clamping groove, 422-dial, 4221-first region, 4222-second region, 423-second elastic restoring member, 44-first stopper, 441-first stopper surface, 442-second stopper surface, 45-dial lever, 46-first connector, 461-first end, 462-second end, 47-second connector, 48-third connector, 49-first spindle, 5-electric mechanism, 51-stationary core, 52-movable core, 521-stopper protrusion, 53-core spring, 54-movable member, 541-movable body, 5411-caulking groove, 542-positioning portion, 55-yoke, 56-skeleton, 6-operating component, 61-closing part, 611-first groove, 612-third inclined surface, 62-opening part, 621-second groove, 622-second inclined surface, 7-locking mechanism, 71-first locking part, 711-first locking body, 7111-first part, 71111-third blocking surface, 71112-second guiding surface, 7112-second part, 71121-fourth inclined surface, 712-first protrusion, 713-guiding rod, 72-unlocking part, 721-gripping part, 722-connecting part, 7221-bar-shaped groove, 7222-first limit groove, 7223-second limit groove, 7224-bump, 7225-locating hole, 723-driving part, 7231-first inclined surface, 73-second locking part, 731-second locking body, 732-second protrusion, 733-third protrusion, 734-extension part, 74-first elastic support, 75-second elastic support, 8-flexible connecting part.

Detailed Description

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

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 application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, 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 application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should 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 communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The circuit breaker is 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, and has two states of on and off. The circuit breaker comprises a moving contact and a fixed contact. When the moving contact is connected with the fixed contact, the circuit breaker is switched on. When the moving contact and the fixed contact are separated, the circuit breaker is opened.

As shown in fig. 1 and 2, an embodiment of the present application provides a circuit breaker, which includes a base 1, a moving contact 3, a fixed contact 2, an opening and closing mechanism 4, an operating assembly 6, and an electric mechanism 5.

The fixed contact 2 is fixedly arranged on the base body 1, the movable contact 3 is movably arranged on the base body 1, so that the movable contact 3 and the fixed contact 2 can be connected or separated, a circuit in which the movable contact 3 is positioned is switched on when the movable contact 3 is connected with the fixed contact 2, and the circuit in which the movable contact 3 is positioned is switched off when the movable contact 3 is separated from the fixed contact 2.

The operating assembly 6 and the electric mechanism 5 both drive the moving contact 3 through the opening and closing mechanism 4. The opening and closing mechanism 4 has an opening state and a closing state, the opening and closing mechanism 4 enables the moving contact 3 to be separated from the fixed contact 2 in the opening state, and the opening and closing mechanism 4 enables the moving contact 3 to be connected with the fixed contact 2 in the closing state.

The operation component 6 is used for being operated by a human hand to switch the opening and closing mechanism 4 between an opening state and a closing state so as to realize manual control of the opening and closing of the circuit breaker.

The electric mechanism 5 is used for switching the opening and closing mechanism 4 between an opening state and a closing state when being electrified so as to realize automatic control of the on and off of the circuit breaker, and the circuit breaker is powered off and returns to an initial state after the switching.

The opening and closing mechanism 4 includes a first transmission member 41 and a second transmission member 42.

The first transmission member 41 is rotatably disposed on the base 1 and connected to the movable contact 3.

As shown in fig. 3, the circuit breaker further includes a first rotation shaft 49, a second rotation shaft 31, and a first connection 46. The first transmission member 41 is rotatably connected to the base 1 via a first rotation shaft 49, and the first transmission member 41 is rotatable about the first rotation shaft 49 in a first clockwise direction and a second clockwise direction, which are opposite, illustratively, the first clockwise direction and the second counterclockwise direction. The movable contact 3 is rotatably connected to the base 1 through a second rotation shaft 31. The first connecting member 46 includes a first end 461 and a second end 462, the first end 461 is connected to the first transmission member 41, and the second end 462 is connected to the moving contact 3.

As shown in fig. 4 and 5, the first transmission member 41 is provided with a first connection hole 4121, and the first connection hole 4121 is for accommodating the first end 461. The moving contact 3 is provided with a corresponding connection hole to receive the second end 462.

The first transmission member 41, the first connection member 46, the moving contact 3 and the base 1 form a four-bar mechanism, and when the first transmission member 41 rotates around the first rotation shaft 49, the first connection member 46 drives the moving contact 3 to rotate around the second rotation shaft 31. The first transmission member 41 has a first initial position and a closing position. As shown in fig. 1, 10 and 11, the moving contact 3 is separated from the fixed contact 2 when the first transmission member 41 is at the first initial position. As shown in fig. 2, the moving contact 3 is connected to the fixed contact 2 when the first transmission member 41 is in the closing position.

As shown in fig. 2, when the first transmission member 41 rotates from the first initial position to the closing position along the first time needle direction, the first rotation shaft 49, the first end 461 and the second end 462 are located on the same straight line, so that the first transmission member 41, the first connecting member 46, the moving contact 3 and the base 1 form a four-bar mechanism and are self-locked when being at a dead point, and the moving contact 3 and the fixed contact 2 are ensured to be stably connected by utilizing self-locking force. In the embodiment of the present application, the "first rotation shaft 49, the first end 461, and the second end 462 are located on the same line" is not necessarily on the same line, and may have a deviation, so long as the four-bar mechanism formed by the first transmission member 41, the first connection member 46, the moving contact 3, and the base 1 can be located at the dead point.

As shown in fig. 1, 2 and 3, the operation assembly 6 includes a switching-off member 62 and a switching-on member 61, the switching-on member 61 and the switching-off member 62 are respectively movably disposed on the base 1, one end of the switching-on member 61 and one end of the switching-off member 62 are both disposed in the base 1 and cooperate with the first transmission member 41, and the other end of the switching-on member 61 and the other end of the switching-off member 62 respectively extend out of the base 1 for manual pressing.

The opening member 62, the closing member 61, and the first transmission member 41 are linked, and when the first transmission member 41 rotates, one of the opening member 62 and the closing member 61 moves toward the inside of the base 1, and the other moves toward the outside of the base 1. The opening member 62, the closing member 61 and the first transmission member 41 are in various linkage manners, for example, the first transmission member 41 is a gear, the opening member 62 and the closing member 61 are two racks symmetrically matched on two sides of the first transmission member 41, and in the embodiment of the application, the opening member 62 and the closing member 61 are hinged with the first transmission member 41 through connecting members respectively.

As shown in fig. 4, the first transmission member 41 is provided with a second connection hole 4111 and a third connection hole 4112. As shown in fig. 3, the opening and closing mechanism 4 further includes a second connecting member 47 and a third connecting member 48. One end of the second connecting member 47 is disposed in the second connecting hole 4111, so that the second connecting member 47 is hinged to the first transmission member 41, and the other end of the second connecting member 47 is hinged to the closing member 61. One end of the third connecting member 48 is disposed in the third connecting hole 4112, so that the third connecting member 48 is hinged to the first transmission member 41, and the other end of the third connecting member 48 is hinged to the brake release member 62.

As shown in fig. 10 and 11, in the open state, the first transmission member 41 is in the first initial position, and the other end of the closing member 61 extends out of the base 1 for manual actuation. Pressing the other end of the closing member 61 moves the closing member 61 toward the inside of the base 1, and driving the first transmission member 41 to rotate from the first initial position to the closing position in the first time pin direction through the second connection member 47, so that the opening and closing mechanism 4 is switched to the closing state, and simultaneously driving the opening and closing member 62 to move toward the outside of the base 1 through the third connection member 48 by the first transmission member 41, so that the other end of the opening and closing member 62 extends out of the base 1.

As shown in fig. 16 and 17, in the closed state, the first transmission member 41 is in the closed position, and the other end of the opening member 62 extends out of the base 1 for manual actuation. When the switching-off state is required, the other end of the switching-off member 62 is pressed to move the switching-off member 62 towards the inside of the base 1, the first transmission member 41 is driven to rotate from the switching-on position to the first initial position along the second clockwise direction through the third connecting member 48, so that the switching-off and switching-on mechanism 4 is switched to the switching-off state, and meanwhile, the first transmission member 41 drives the switching-on member 61 to move towards the outside of the base 1 through the second connecting member 47, so that the other end of the switching-on member 61 extends out of the base 1. Therefore, by arranging the operation assembly 6 comprising the closing member 61 and the opening member 62, the circuit breaker provided by the embodiment of the application can realize manual control of the on-off of the circuit breaker.

The second transmission member 42 is disposed coaxially with the first transmission member 41 on the first rotation shaft 49. Thus, the first transmission member 41 and the second transmission member 42 are each rotatable about the first rotation axis 49 in a first needle direction and a second needle direction, the first needle direction and the second needle direction being opposite, illustratively the first needle direction being clockwise and the second needle direction being counter-clockwise.

The second transmission member 42 has a second initial position, an off position, and a brake release position along the first needle direction. As shown in fig. 10 and 11, when the first transmission member 41 is at the first initial position and the second transmission member 42 is at the second initial position, the opening and closing mechanism 4 is in the opening state, and the moving contact 3 is separated from the fixed contact 2. As shown in fig. 16 and 17, when the first transmission member 41 is in the closing position and the second transmission member 42 is in the stopping position, the opening and closing mechanism 4 is in the closing state, and the moving contact 3 is connected to the fixed contact 2.

The second transmission member 42 pushes the moving contact 3 at the opening position to disengage the moving contact 3 from the fixed contact 2. As shown in fig. 6 and 7, the second transmission member 42 is formed with a first protrusion 4212 protruding in the radial direction, and as shown in fig. 3, the movable contact 3 is provided with a second protrusion 32. As shown in fig. 16, 17, 18 and 19, in the closed state, when the second transmission member 42 rotates from the stop position to the opening position, the first protrusion 4212 interferes with the second protrusion 32, thereby pushing the moving contact 3 to rotate and disengage from the fixed contact 2.

The first transmission member 41 has a first abutment surface 41131 and the second transmission member 42 has a second abutment surface 42111. As shown in fig. 4, the first transmission member 41 is formed with a notch 4113; as shown in fig. 6, the second transmission member 42 is formed with a third protrusion 4211; as shown in fig. 3, the third protrusion 4211 is fitted into the notch 4113, and the third protrusion 4211 is movable in the notch 4113. A first abutment surface 41131 is formed at one end of the notch 4113, and a second abutment surface 42111 is formed at one side surface of the third projection 4211, the first abutment surface 41131 being opposite to the second abutment surface 42111.

When the first transmission member 41 is located at the first initial position, the second transmission member 42 is located at the second initial position (i.e., the open state), and when the first transmission member 41 is located at the first initial position, the second transmission member 42 is located at the stop position (i.e., the closed state), the first abutting surface 41131 abuts against the second abutting surface 42111. When the first transmission member 41 moves from the first initial position toward the closing position along the first time needle direction, the first abutting surface 41131 acts on the second abutting surface 42111 to drive the second transmission member 42 to move from the second initial position toward the middle position along the first time needle direction. When the second transmission member 42 is reset to the second initial position along the second clockwise direction, the second abutting surface 42111 acts on the first abutting surface 41131 to drive the first transmission member 41 to reset to the first initial position along the second clockwise direction.

Meanwhile, the third protrusion 4211 can move in the notch 4113, so that the second abutting surface 42111 can be far away from the first abutting surface 41131, so that the second transmission member 42 can rotate along the first time needle direction independently relative to the first transmission member 41, and therefore, the second transmission member 42 can move to the brake separating position independently from the intermediate position along the first time needle direction, so as to push the moving contact 3, break dead point, release self-locking and enable the moving contact 3 to be separated from the fixed contact 2.

In other embodiments, the first and second transmission members 41, 42 may also be mated by other means.

For example, the first transmission member 41 and the second transmission member 42 may be further provided with protrusions, respectively, the first abutment surface 41131 being formed on a side surface of the protrusion on the first transmission member 41, and the second abutment surface 42111 being formed on a side surface of the protrusion on the second transmission member 42, the first abutment surface 41131 being opposite to the second abutment surface 42111.

As another example, as shown in fig. 35, the opening and closing mechanism 4 further includes a flexible connecting member 8, where the flexible connecting member 8 may be a chain, a rope, or the like. The first transmission member 41 has a first connection position, the second transmission member 42 has a second connection position, the first connection position is in front of the second connection position along the first time needle direction, one end of the flexible connection member 8 is connected to the first connection position, and the other end of the flexible connection member 8 is connected to the second connection position.

As shown in fig. 35, when the first transmission member 41 is located at the first initial position and the second abutting surface 42111 is located at the second initial position (i.e., the opening state), the flexible connection member 8 is straightened, and when the first transmission member 41 moves to the closing position along the first time pin direction, the second transmission member 42 can be driven to move to the stopping position. As shown in fig. 36, when the first transmission member 41 is located at the closing position and the second transmission member 42 is located at the stopping position (i.e., the closing state), the flexible connection member 8 is straightened, and if the second transmission member 42 is reset to the second initial position along the second clockwise direction, the first transmission member 41 can be driven to reset to the first initial position along the second clockwise direction by the straightened flexible connection member 8.

Meanwhile, when the first transmission member 41 is located at the closing position and the second transmission member 42 is located at the stopping position (i.e., the closing state), as shown in fig. 37, the flexible connection member 8 allows the second transmission member 42 to rotate independently along the first time needle direction relative to the first transmission member 41, so that the second transmission member 42 can move independently along the first time needle direction from the stopping position to the opening position, so that the first protrusion 4212 is used to push the moving contact 3, break dead points, release self-locking, and separate the moving contact 3 from the fixed contact 2.

In some embodiments, the opening and closing mechanism 4 further includes a first elastic restoring member (not shown in the drawings) connected to the second transmission member 42, and the first elastic restoring member has a tendency to restore the second transmission member 42 to the second initial position in the second clockwise direction. The first elastic reset piece is configured to accumulate elastic force in a closing state, and release the elastic force to drive the second transmission piece 42 and the first transmission piece 41 to reset after the moving contact 3 is separated from the fixed contact 2.

The second transmission member 42 is arranged between the first transmission member 41 and the base 1, and the first elastic restoring member is arranged between the second transmission member 42 and the base 1. As shown in fig. 7, a clamping groove 4216 is formed on one side of the second transmission member 42 facing the base 1, as shown in fig. 9, the base 1 is provided with a clamping surface 11, the first elastic restoring member is a torsion spring, one of the supporting legs of the first elastic restoring member is embedded in the clamping groove 4216, and the other supporting leg of the first elastic restoring member is connected to the clamping surface 11 of the base 1.

When the first transmission member 41 rotates to the closing position, the moving contact 3 is connected with the fixed contact 2, and drives the second transmission member 42 to rotate to the stopping position, the first elastic reset member accumulates elastic force, at this time, the elastic force of the first elastic reset member is insufficient to enable the moving contact 3 to be separated from the fixed contact 2, the first transmission member 41 is kept at the closing position, the second transmission member 42 is kept at the stopping position, and the whole opening and closing mechanism 4 is kept in the closing state.

When the second transmission member 42 is driven to the opening position, the elastic force of the first elastic reset member is increased, and at this time, the second transmission member 42 pushes the moving contact 3 to separate from the fixed contact 2, so that the resistance for preventing the second transmission member 42 and the first transmission member 41 from returning is reduced, and the elastic force of the first elastic reset member pushes the second transmission member 42 to reset to the second initial position and pushes the first transmission member 41 to reset to the first initial position.

In addition, the first elastic restoring member further provides a supporting force to the second transmission member 42, so that the second transmission member 42 fits to the first transmission member 41, and the first abutting surface 41131 and the second abutting surface 42111 are guaranteed to cooperate.

In the above embodiment, the first transmission member 41 and the second transmission member 42 are rotatably connected to the base 1 through the first rotation shaft 49, and drive the movable contact 3 when rotated. In other embodiments, the first transmission member 41 and the second transmission member 42 may be configured to drive the moving contact 3 by other movement methods, that is, the first transmission member 41 and the second transmission member 42 may be moved in a linear direction, the first time needle direction may be replaced with a first linear direction, and the second time needle direction may be replaced with a second linear direction along a straight line, and the first linear direction and the second linear direction are opposite. The first direction refers to the first time needle direction or the first straight line direction, and the second direction refers to the second time needle direction or the second straight line direction.

The electric mechanism 5 provided by the embodiment of the application can provide power along the first time needle direction (or the first linear direction) when being electrified, and the output end of the electric mechanism 5 can alternatively drive the first transmission member 41 and the second transmission member 42 so as to realize automatic closing and automatic opening. Specifically, in the opening state, the first transmission member 41 is located at the first initial position, the second transmission member 42 is located at the second initial position, and the output end of the electric mechanism 5 is matched with the first transmission member 41, so that the output end of the electric mechanism 5 drives the first transmission member 41 and the second transmission member 42 to move along the first needle direction when being electrified. In the closing state, the first transmission member 41 is located at the closing position, the second transmission member 42 is located at the stopping position, and the output end of the electric mechanism 5 is matched with the second transmission member 42, so that the output end of the electric mechanism 5 drives the second transmission member 42 to move along the first time needle direction independently when being electrified.

As shown in fig. 3 and 4, the first transmission member 41 is provided with a sliding groove 4122 and a first stress surface 4123, the output end of the electric mechanism 5 is matched with the sliding groove 4122, and the first stress surface 4123 is located at one end of the sliding groove 4122. When the first transmission member 41 is located at the first initial position, the output end of the electric mechanism 5 is matched with the first stress surface 4123, and when the electric mechanism 5 is powered on, a force is applied to the first stress surface 4123 to drive the first transmission member 41 to move from the first initial position to the closing position.

For ease of viewing the second transmission member 42, the first transmission member 41 is omitted from fig. 12, and as shown in connection with fig. 12, 13 and 17, the second transmission member 42 includes a second transmission body 421 and a dial 422, the dial 422 being rotatably coupled to the second transmission body 421 and having a retracted position (as shown in fig. 13) and a blocking position (as shown in fig. 17). The position of the shifting block 422 corresponds to the position of the sliding groove 4122, and when the second transmission member 42 rotates relative to the first transmission member 41, the shifting block 422 spans the sliding groove 4122, or the shifting block 422 is located at one side of the sliding groove 4122.

As shown in fig. 10 and 11, when the first transmission member 41 is located at the first initial position and the second transmission member 42 is located at the second initial position, the dial 422 rotates to the avoidance position, and when the dial 422 is located at the avoidance position, the output end of the electric mechanism 5 is avoided, so that the output end of the electric mechanism 5 is allowed to move along the sliding groove 4122, as shown in fig. 14 and 15, and the output end of the electric mechanism 5 is ensured to be capable of acting on the first stress surface 4123.

As shown in fig. 16 and 17, the first transmission member 41 is located at the closing position, the second transmission member 42 is located at the stopping position, the dial 422 is rotated to the blocking position, and the dial 422 spans the sliding groove 4122 at the blocking position to block the output end of the electric mechanism 5. As shown in fig. 18 and 19, when the output end of the electric mechanism 5 is energized, a force is applied to the shifting block 422, the shifting block 422 moves towards the first stress surface 4123, and the second transmission member 42 rotates to the opening position along the first time needle direction independently relative to the first transmission member 41, so that the moving contact 3 is pushed by the first protrusion 4212 on the second transmission member 42, and the moving contact 3 is separated from the fixed contact 2.

As shown in fig. 6, the second transmission body 421 is further provided with a third abutment surface 4213. The dial 422 is provided with a second force-bearing surface, as shown in fig. 8, comprising a first region 4221 and a second region 4222 located on either side of the rotational axis of the dial 422. As shown in fig. 17 and 19, when the dial 422 is in the blocking position, the first area 4221 blocks the shift lever 45, and the second area 4222 is abutted against the third abutment surface 4213, so that the dial 422 cannot rotate towards the third abutment surface 4213, the first area 4221 of the dial 422 is ensured to block the output end of the electric mechanism 5, and when the output end of the electric mechanism 5 is electrified, the first area 4221 is acted on to transmit power to the second transmission body 421, and the second transmission member 42 can rotate along the first time needle direction as a whole.

In some embodiments, as shown in fig. 6, the second transmission body 421 is provided with a stop 4214, and when the dial 422 is in the blocking position, the back surface of the first region 4221 of the dial 422 abuts against the stop 4214 to limit the continued rotation of the dial 422. The stopper 4214 not only restricts rotation of the dial 422, but also provides a supporting force to the side of the first region 4221 of the dial 422, so that the dial 422 is not easily deformed when receiving the force of the output end of the electric mechanism 5.

As shown in fig. 9 and 13, the opening and closing mechanism 4 further includes a first limiting member 44, where the first limiting member 44 is fixed to the base 1, the first limiting member 44 is disposed along a movement path of the second transmission member 42, and when the second transmission member 42 is located between the second initial position and the stop position, the first limiting member 44 cooperates with the dial 422 to limit the dial 422 to the avoidance position.

As shown in fig. 9, the first limiting member 44 is formed with a first limiting surface 441 and a second limiting surface 442, the first limiting surface 441 is disposed along the moving path of the second transmission member 42, the second limiting surface 442 is connected to the first limiting surface 441, and the second limiting surface 442 is located at one end of the first limiting member 44 facing the first time pin direction.

When the second transmission member 42 is at the first initial position, the shifting block 422 abuts against the first limiting surface 441, so that the shifting block 422 cannot rotate, and is limited to the avoiding position.

When the second transmission member 42 moves to the stop position, the shifting block 422 is separated from the first limiting surface 441, so that the shifting block 422 can rotate from the avoidance position to the blocking position.

Through setting up the first locating part 44 that has first spacing face 441, utilize first locating part 44 hard limitation shifting block 422, guarantee that shifting block 422 is limited in dodging the position under the brake-separating state for shifting block 422 is difficult to rotate at will, and the reliability is higher.

The second limiting surface 442 is configured to urge the dial 422 to rotate from the blocking position to the retracted position when the second transmission member 42 is reset from the rest position to the second initial position in the second clockwise direction. The second limiting surface 442 is utilized to push the shifting block 422 to automatically rotate back to the avoiding position, a driving mechanism is not required to be additionally arranged, the structure is simpler and more compact, and compared with a mode of driving the shifting block 422 by adding the driving mechanism, faults are not easy to occur, and the reliability is higher.

As shown in fig. 13, the opening and closing mechanism 4 further includes a second elastic restoring member 423, where one end of the second elastic restoring member 423 is connected to the second transmission body 421, and the other end of the second elastic restoring member 423 is connected to the dial block 422, and the second elastic restoring member 423 has a tendency to rotate the dial block 422 from the avoidance position to the blocking position, so that the dial block 422 can be quickly rotated to the blocking position when being separated from the restriction of the first limiting surface 441 of the first limiting member 44.

As shown in fig. 6, 8 and 13, the second elastic restoring member 423 is a compression spring, the second transmission body 421 is provided with a blind hole 4215, one end of the second elastic restoring member 423 is disposed in the blind hole 4215, and the other end of the second elastic restoring member 423 abuts against the back surface of the second area 4222 of the shifting block 422.

In other embodiments, the second elastic restoring member 423 may be a torsion spring, which is sleeved on the rotating shaft of the dial 422 and has a tendency to rotate the dial 422 from the avoidance position to the blocking position.

In other embodiments, the dial may also be configured to move in a linear direction with the path of movement passing through the location of the chute. For example, the second transmission member is provided with a guide rail passing through the sliding groove, the shifting block is slidably arranged on the guide rail, and is in the blocking position when the shifting block moves to cross the sliding groove, and is in the avoiding position when the shifting block moves to leave the sliding groove.

In an embodiment in which the dial is configured to move in a straight line, the second elastic restoring member is located at one end of the dial, and an extension portion is connected to the other end of the dial, and the height of the extension portion is smaller than that of the dial.

When the second transmission part is at the first initial position, the extension part is propped against the first limiting surface, so that the shifting block moves inwards and is arranged below the sliding groove, and is limited at the avoiding position and compresses the second elastic reset part. At this time, the extension part is positioned below the sliding groove, and the deflector rod cannot be blocked due to the low height of the extension part.

When the second transmission piece moves to the stopping position, the extension part is separated from the first limiting surface, the shifting block stretches out to the lower part of the sliding groove under the action of the second elastic reset piece, and the shifting block is positioned at the blocking position. Further, one surface of the shifting block, which faces away from the second stress surface, is an inclined surface, namely, one surface of the shifting block, which faces the first stress surface, is provided with an inclined surface, so that the second transmission member can be shifted by the shifting lever acting on the second stress surface, and the shifting block can be pushed to instantaneously return to the avoiding position when the shifting lever acts on the inclined surface of the shifting block.

Simultaneously, the extension has with second spacing face complex inclined plane, and when second driving medium reset along the second clockwise, the second spacing face inwards extrudees the shifting block through the inclined plane of extension, makes it return to the position of dodging from the blocking position.

In some embodiments, the first transmission member 41 and the second transmission member 42 are stacked, where the first transmission member 41 includes a first transmission portion 411 and a second transmission portion 412, the first transmission portion 411 is matched with the second transmission member 42, that is, the first abutment surface 41131 is disposed on the first transmission portion 411, and an accommodating space for accommodating the dial 422 is formed between the second transmission portion 412 and the second transmission member 42.

In the embodiment in which the first transmission member 41 and the second transmission member 42 are stacked, the sliding groove 4122 is provided in the second transmission portion 412 such that the position of the sliding groove 4122 corresponds to the position of the dial 422, and the side of the dial 422 where the second region 4222 is located protrudes radially from the receiving space to be engaged with the first stopper 44. Alternatively, the first connecting hole 4121 is disposed at the second transmission portion 412, and the second connecting hole 4111 and the third connecting hole 4112 are disposed at the first transmission portion 411.

Through the range upon range of setting first driving medium 41 and second driving medium 42 for the plane area that divide-shut brake mechanism 4 occupy is little, and overall structure is compact, and sets up the accommodation space between second drive portion 412 and second driving medium 42 with the shifting block 422, shifting block 422 be difficult for with being located accommodation space outside, other parts except first locating part 44 interfere, improves the reliability of divide-shut brake mechanism 4.

The circuit breaker further comprises a lever 45, which lever 45 is connected to the electric mechanism 5 for oscillating the first transmission member 41 and/or the second transmission member 42 in the first time needle direction (or in the first direction of movement X of the straight line).

The lever 45 may be an output end of the electric mechanism 5, or may be a part of the opening/closing mechanism 4 and hinged to an output end of the electric mechanism 5. As shown in fig. 11, one end of the lever 45 is hinged to the output end of the electric mechanism 5, and one end of the lever 45 away from the electric mechanism 5 is bent and extends into the sliding groove 4122, so that the lever 45 can slide along the sliding groove 4122, and the length of the bent portion is greater than the depth of the sliding groove 4122, so that the lever 45 can be matched with the shifting block 422.

As shown in fig. 11 and 13, when the dial 422 is retracted in the retracted position, the dial 45 is retracted, and the dial 45 can act on the first force bearing surface 4123 to drive the first transmission member 41 to rotate in the first needle direction to the closing position, and drive the second transmission member 42 to rotate to the stopping position through the first transmission member 41. As shown in fig. 17 and 19, when the shift block 422 is in the blocking position, the shift lever 45 is blocked by crossing the sliding groove 4122, and the shift lever 45 acts on the shift block 422 to drive the second transmission member 42 to rotate from the stop position to the brake release position in the first time needle direction.

As shown in fig. 20, the electromotive mechanism 5 includes a yoke 55, a bobbin 56, a coil, a stationary core 51, a movable core 52, a core spring 53, and a movable member 54. The bobbin 56 is disposed inside the yoke 55, and the coil is tightly and uniformly wound around the bobbin 56. The frame 56 is formed with a through hole, the stationary core 51 is fixedly disposed at one end of the through hole, the movable core 52 is movably disposed at the through hole, and the core spring 53 is supported between the stationary core 51 and the movable core 52 such that the movable core 52 has a tendency to be away from the stationary core 51. The movable iron core 52 extends out of the through hole from one end of the fixed iron core 51, and the movable piece 54 is sleeved on the movable iron core 52 and is used for installing the deflector rod 45.

As shown in fig. 22, the movable member 54 includes a movable body 541 and a positioning portion 542. As shown in fig. 21, a limit protrusion 521 is formed at one end of the movable iron core 52 facing away from the stationary iron core 51, and a movable body 541 is sleeved on the outer periphery of the movable iron core 52 and forms a groove, and the groove cooperates with the limit protrusion 521 to fix the movable body 541 and the movable iron core 52 along the axial direction of the movable iron core 52. The positioning portion 542 is connected to the movable body 541, and the lever 45 is hinged to the movable body 541.

The base 1 is provided with a positioning groove 12, the extending direction of the positioning groove 12 is the same as the moving direction of the movable iron core 52, and the positioning part 542 is slidably matched with the positioning groove 12 so as to enable the movable piece 54 to stably move, and when the electric mechanism 5 is powered off, the positioning part 542 is positioned in the positioning groove 12 so as to prevent the movable piece 54 from shifting and ensure the position and the action stability of the deflector rod 45.

As shown in fig. 14 and 18, when the coil in the electric mechanism 5 is energized, electromagnetic force is generated, the electromagnetic force drives the movable iron core 52 to approach the static iron core 51 along the through hole, the movable iron core 52 drives the shift lever 45 through the movable piece 54, so that the shift lever 45 moves along the first time needle direction in the sliding groove 4122, and the first transmission piece 41 is shifted, or the second transmission piece 42 is shifted, so that the switching-on and switching-off mechanism 4 is driven to switch between the switching-off state and the switching-on state.

As shown in fig. 10 and 16, after the state is switched, the coil is de-energized, the electromagnetic force is eliminated, and the movable iron core 52 returns to its original position under the action of the iron core spring 53, so that the movable member 54 and the shift lever 45 return to their original positions.

In actual use, the safety and stability of the circuit breaker are particularly important, and the circuit breaker is plugged in and out in a closing state, the circuit breaker is accidentally separated from an installation position and the like, so that the safety, the power supply stability and the personal safety of a user of electric equipment are all adversely affected.

In some embodiments, as shown in fig. 1 and 2, the circuit breaker is provided with a locking mechanism 7, and the locking mechanism 7 is used for locking the circuit breaker in an installation position, so as to avoid the circuit breaker from being accidentally pulled out in a closing state and avoid the circuit breaker from being plugged in and out in the closing state.

The lock mechanism 7 includes a first lock piece 71, a second lock piece 73, and an unlock piece 72.

As shown in fig. 23, 24 and 25, the first locking member 71 is extendably provided to the base 1, and the first locking member 71 can lock the circuit breaker in the installation position when extending out of the base 1.

The unlocking member 72 is movably connected to the base 1, and the unlocking member 72 is configured to enable the first locking member 71 to retract into the base 1 to unlock the circuit breaker when moved, so as to facilitate the extraction of the circuit breaker from the installation position.

The second locking member 73 is engaged with the unlocking member 72, the second locking member 73 being movably provided to the base 1, as shown in fig. 26 and 27, the second locking member 73 having a locked position and an unlocked position, the second locking member 73 restricting movement of the unlocking member 72 when in the locked position, the second locking member 73 allowing movement of the unlocking member 72 when in the unlocked position.

Meanwhile, the second locking piece 73 is linked with the opening and closing mechanism 4, the second locking piece 73 is in a locking position when the opening and closing mechanism 4 is closed, and the second locking piece 73 is in an unlocking position when the opening and closing mechanism 4 is opened.

Through setting up locking mechanism 7 in the circuit breaker, second locking piece 73 is in the locking position when closing a floodgate, makes unblock piece 72 unable removal, and consequently unblock piece 72 can't order first locking piece 71 to retract base member 1, under the restriction of first locking piece 71, the circuit breaker can't be pulled out from the mounted position, realizes preventing that the circuit breaker from being pulled out under the combined floodgate state, improves the security and the stability of circuit breaker.

By providing the locking mechanism 7 in the circuit breaker, the second locking member 73 is in the unlocking position at the time of opening the circuit breaker to allow the unlocking member 72 to move; when the unlocking piece 72 does not move, the circuit breaker can be limited at the installation position under the action of the first locking piece 71, so that the circuit breaker is prevented from being accidentally separated from the installation position, and the stability of the circuit breaker is improved; when the unlocking member 72 moves, the first locking member 71 is retracted into the base 1 to unlock the circuit breaker, so that the circuit breaker can be conveniently inserted into or pulled out from the installation position.

The unlocking member 72 is movably connected to the base 1 along the first moving direction X, the first locking member 71 is extendably disposed on the base 1 along the second moving direction Y, and the second locking member 73 limits the unlocking member 72 to move along the first moving direction X, so that the unlocking member 72 is prevented from driving the first locking member 71 to move along the second moving direction Y. The first moving direction X and the second moving direction Y are arranged at a first preset angle, and the first preset angle is larger than zero degrees. In some embodiments, the first preset angle may be 90 °.

As shown in fig. 28 and 29, the unlocking member 72 includes a grip portion 721, a connecting portion 722, and a driving portion 723, the connecting portion 722 being movably connected with the base 1, the grip portion 721 being extended from the base 1 for being gripped and pulled by a human hand, the driving portion 723 being for driving the first locking member 71 to retract.

One of the base body 1 and the connecting portion 722 is provided with a bar-shaped groove 7221 extending in the first moving direction X, and the other is provided with a positioning key 13, and the positioning key 13 cooperates with the bar-shaped groove 7221 to define the moving direction of the unlocking piece 72.

Illustratively, as shown in fig. 30, the positioning key 13 is provided to the base 1, and as shown in fig. 28, the bar-shaped groove 7221 is provided to the connecting portion 722. The unlocking member 72 is pulled in the first moving direction X, on the one hand, the first locking member 71 is driven by the driving member to retract into the base 1 for unlocking, and on the other hand, the pulling force is transmitted to the base 1 by abutting the end surface of the bar-shaped groove 7221 against the positioning key 13, so that the whole circuit breaker is pulled out while unlocking.

As shown in fig. 25, the base 1 is further provided with a first blocking surface 16 and a second blocking surface 17, the first blocking surface 16 and the second blocking surface 17 are disposed opposite to each other, the connection portion 722 is formed with a bump 7224, and the bump 7224 is disposed between the first blocking surface 16 and the second blocking surface 17.

The first blocking surface 16 cooperates with the boss 7224 to limit movement of the unlocking member 72 toward the outside of the base 1, and the second blocking surface 17 cooperates with the boss 7224 to limit movement of the unlocking member 72 toward the inside of the base 1.

In one aspect, the first blocking surface 16, the second blocking surface 17, and the tab 7224 cooperate to define a travel of the unlocking member 72. On the other hand, when the unlocking member 72 is pulled, the protrusion 7224 acts on the first blocking surface 16 to transmit the outward pulling force to the base 1, that is, during the process of pulling the circuit breaker, the first blocking surface 16 and the positioning key 13 share the force together, so that the force applied to the positioning key 13 can be reduced, and the positioning key 13 is prevented from being damaged.

As shown in fig. 31, the first lock member 71 includes a first lock body 711 and a first protrusion 712, the first lock body 711 is provided to be extendable from the base 1, and the first protrusion 712 is connected to the first lock body 711.

The driving portion 723 is formed with a first inclined surface 7231, and the first inclined surface 7231 is engaged with the first convex portion 712.

When the unlocking piece 72 moves, the first inclined surface 7231 and the first convex portion 712 move relatively. As shown in fig. 24 and 25, when the unlocking member 72 moves in the first moving direction X toward the outside of the base 1, the first protrusion 712 moves along the first inclined surface 7231, retracting the first locking body 711 into the base 1. When the unlocking piece 72 moves in the first moving direction X toward the inside of the base 1, the first protrusion 712 moves in the opposite direction along the first inclined surface 7231, so that the first locking body 711 protrudes out of the base 1.

In some embodiments, the locking mechanism 7 further comprises a first elastic support 74, the first elastic support 74 being arranged between the base 1 and the first locking member 71, the first elastic support 74 having a tendency to allow the first locking member 71 to protrude out of the base 1.

As shown in fig. 24, 25 and 30, the base 1 is provided with the first mounting hole 14, and the first mounting hole 14 extends in the second moving direction Y. The first locking member 71 further includes a guide rod 713, one end of the guide rod 713 is connected to the first locking body 711, the other end of the guide rod 713 is inserted into the first mounting hole 14, the first elastic support member 74 is sleeved on the guide rod 713, one end of the first elastic support member 74 abuts against the surface of the first locking body 711, and the other end abuts against the bottom of the first mounting hole 14. When the unlocking member 72 moves outside the base 1, the first locking member 71 is urged to retract into the base 1, and the first elastic supporting member 74 is compressed. When the unlocking member 72 moves toward the inside of the base 1, the first elastic supporting member 74 releases the elastic force to drive the first locking member 71 to protrude out of the base 1.

In some embodiments, as shown in fig. 24, 25 and 30, the locking mechanism 7 further includes a second elastic support 75, the second elastic support 75 being disposed between the base 1 and the unlocking member 72, the second elastic support 75 having a tendency to return the unlocking member 72 to the initial position to allow the first locking member 71 to protrude out of the base 1.

The base body 1 is provided with second mounting holes 15, the second mounting holes 15 extending in the first moving direction X. As shown in fig. 28, the unlocking piece 72 is provided with a positioning hole 7225, and an opening of the positioning hole 7225 is disposed opposite to an opening of the second mounting hole 15. One end of the second elastic supporting member 75 is located in the second mounting hole 15 and abuts against the bottom of the second mounting hole 15, and the other end of the second elastic supporting member 75 is located in the positioning hole 7225 and abuts against the bottom of the positioning hole 7225.

In some embodiments, the base 1 includes a substrate and a housing, the substrate is used for installing functional components such as a moving contact 3, a fixed contact 2, a switching-on/off mechanism 4, an operating assembly 6, an electric mechanism 5, a locking mechanism 7 and the like of the circuit breaker, the housing is enclosed around the substrate for protecting each functional component, the housing is provided with a plurality of openings, so that the moving contact 3 and the fixed contact 2 can be respectively connected with a circuit, and the switching-on piece 61, the switching-off piece 62 and the unlocking piece 72 can be extended for operation, one of the plurality of openings is a locking opening, and the locking opening is used for extending the first locking piece 71 to lock the circuit breaker.

As shown in fig. 31, the first locking body 711 includes a first portion 7111 and a second portion 7112, the first portion 7111 is formed with a third blocking surface 71111, the third blocking surface 71111 is opposite to the locking opening, the second portion 7112 is connected to the third blocking surface 71111, the second portion 7112 can extend out of the locking opening, and the third blocking surface 71111 abuts against the inner wall of the housing to limit the first locking body 711 from being separated.

The base body 1 is formed with a first guide surface 18, the first guide surface 18 being perpendicular to the plane of the notch, the first guide surface 18 being in contact with the first portion 7111 to guide the second portion 7112 to move to extend or retract. As shown in fig. 31, the first portion 7111 is provided with a second guide surface 71112, and the second guide surface 71112 is fitted to the first guide surface 18.

The second locking member 73 is configured to be able to restrict the unlocking member 72 from moving outside the base 1 to lock the first locking member 71 in the extended state.

In some embodiments, as shown in fig. 32, the second locking member 73 includes a second locking body 731 and a second protrusion 732, the second protrusion 732 being connected to the second locking body 731.

As shown in fig. 29, the unlocking member 72 is provided with a first limiting groove 7222 and a second limiting groove 7223, the first limiting groove 7222 is connected with the second limiting groove 7223, the first limiting groove 7222 extends along a first moving direction X, the second limiting groove 7223 extends along a third moving direction Z, the third moving direction Z and the second moving direction Y form a second preset angle, and the second preset angle is larger than zero degrees. In some embodiments, the second preset angle is 90 °.

As shown in fig. 24, 25, 26, and 29, when the second locking member 73 is in the unlocked position, the second protrusion 732 is engaged with the first limiting groove 7222; when the second locking member 73 is in the locking position, the second protrusion 732 is engaged with the second limiting groove 7223.

One end of the second locking body 731 is rotatably connected to the base 1, and the second protrusion 732 is provided at the other end of the second locking body 731. When the second locking body 731 is rotated, the second protrusion 732 moves along the second limiting groove 7223.

As shown in fig. 27, the second locking body 731 is in a locked position when rotated near the locking notch. As shown in fig. 26, the second locking body 731 is in an unlocked position when rotated away from the locking notch.

When the second locking member 73 is at the locking position, the second protruding portion 732 is located at one end of the second limiting groove 7223 away from the first limiting groove 7222, and two side walls of the second limiting groove 7223 abut against two sides of the second protruding portion 732 in the first moving direction X, so that the unlocking member 72 is limited to move along the first moving direction X, and the first locking member 71 is kept protruding to lock the circuit breaker.

When the second locking member 73 is at the unlocking position, the second protruding portion 732 is located at the end of the second limiting groove 7223 connected to the first limiting groove 7222, and the second protruding portion 732 can move in the first moving direction X in the first limiting groove 7222, so that the unlocking member 72 can move in the first moving direction X to drive the first locking member 71 to retract to unlock the circuit breaker.

In some embodiments, the first limiting groove 7222 is configured such that one end is connected to the second limiting groove 7223 and the other end is open, and the second protrusion 732 can be moved out of the open end of the first limiting groove 7222 when the unlocking member 72 is moved. When one end of the first limiting groove 7222, which is far away from the second limiting groove 7223, is open, the moving distance of the unlocking piece 72 is not limited by the length of the first limiting groove 7222, the first limiting groove 7222 can be set to be shorter, and the connecting part 722 can reduce materials, so that the effects of saving cost and reducing weight of the circuit breaker are achieved. Alternatively, the width of the first limit groove 7222 is gradually increased from the end connecting the second limit groove 7223 toward the end distant from the second limit groove 7223, so that the second protrusion 732 moves out and returns to the first limit groove 7222.

As before, the second locking member 73 is linked with the opening and closing mechanism 4, the second locking member 73 is in the locking position when the opening and closing mechanism 4 is closed, and the second locking member 73 is in the unlocking position when the opening and closing mechanism 4 is opened.

The second locking member 73 is in various linkage manners with the opening/closing mechanism 4.

For example, the second locking member 73 may be directly connected to the opening and closing mechanism 4 to achieve the interlocking. In some embodiments, the second locking member 73 may be connected to the first transmission member 41, where the first transmission member 41 is in the first initial position, the second locking member 73 is in the unlocked position, and the first transmission member 41 is in the closed position, where the second locking member 73 is in the locked position. In some embodiments, the second locking member 73 may be connected to the second transmission member 42, where the second transmission member 42 is in the second initial position, the second locking member 73 is in the unlocked position, and the second transmission member 42 is in the stopped position, the second locking member 73 is in the locked position.

For another example, the second locking member 73 is not directly connected to the opening and closing mechanism 4, and the circuit breaker is provided with a driving mechanism for driving the second locking member 73 to move, and the opening and closing mechanism 4 triggers the driving mechanism to move the second locking member 73 when switching the state.

For another example, the second locking member 73 is not directly connected to the opening and closing mechanism 4, but the second locking member 73 is shifted when the opening and closing mechanism 4 switches states. The second locking member 73 may be engaged with at least one of the opening member 62 or the closing member 61 to move the second locking member 73 between the unlocking position and the opening position.

As shown in fig. 32, the second locking member 73 further includes a third protrusion 733, the third protrusion 733 is connected to the second locking body 731, and the second protrusion 732 and the third protrusion 733 are located on opposite sides of the second locking body 731.

As shown in fig. 33, the brake release member 62 is provided with a second inclined surface 622, and the second inclined surface 622 is engaged with the third projection 733 at the time of closing so that the second lock member 73 is in the lock position. Optionally, the brake release member 62 is provided with a second recess 621, and the sidewall of the second recess 621 is inclined to form a second inclined surface 622.

The third protrusion 733 is located between the second inclined plane 622 and the locking opening, and when the closing member 61 is pressed to close, the first transmission member 41 drives the opening member 62 to move towards the outside of the base 1, and the second inclined plane 622 pushes the third protrusion 733, so that the second locking body 731 is pushed to rotate upwards to the locking position. In the closing state, one end of the second inclined surface 622, which is close to the locking opening, is blocked at one side of the third protrusion 733, so that the second locking piece 73 is limited at the locking position, and the second protrusion 732 is positioned at one end of the second limiting groove 7223, which is far away from the first limiting groove 7222, so that the unlocking piece 72 is locked, and the unlocking piece 72 cannot drive the first locking piece 71 to retract in the closing state, so that the first locking piece 71 keeps locking the circuit breaker, the circuit breaker is prevented from being pulled out in the closing state, and the safety of equipment and the personal safety of operators are protected.

Optionally, as shown in fig. 26 and 27, the second locking member 73 further includes an extension 734, and the extension 734 is connected to the second locking body 731. When the second locking member 73 is in the locked position, the extension 734 protrudes out of the base 1; when the second locking member 73 is in the unlocked position, the extension 734 is retracted into the base 1. With the engagement of the third projection 733 and the release member 62, the second locking member 73 is restricted to the locking position, and the unlocking member 72 can be locked not only by the second projection 732 but also by the extension 734. In the closing state, the first locking piece 71 and the second locking piece 73 jointly lock the circuit breaker, so that the capacity of resisting brute force insertion and extraction can be improved, the circuit breaker can be prevented from being unlocked accidentally due to accidental retraction of the first locking piece 71, the circuit breaker can be further prevented from being inserted and extracted in the closing state, and the safety of the circuit breaker is improved.

When the opening/closing mechanism 4 needs to be switched to the opening state, the opening/closing member 62 is pushed, the opening/closing member 62 moves toward the inside of the base body 1, one end of the second inclined surface 622 near the lock opening moves away from the movement path of the third projection 733, the restriction on the third projection 733 is released, the second locking member 73 can move toward the unlocking position, the unlocking member 72 can be unlocked, and the first locking member 71 and the second locking member 73 can be retracted into the base body 1.

In some embodiments, the opening and closing member 62 and 61 are disposed opposite to each other on both sides of the third projection 733. As shown in fig. 34, the closing member 61 is provided with a third inclined surface 612, and at the time of opening, the third inclined surface 612 is engaged with the third convex portion 733 so that the second locking member 73 is in the unlocking position. Optionally, the closing member 61 is provided with a first groove 611, and a side wall of the first groove 611 is inclined to form a second inclined surface 622.

The third inclined surface 612 is disposed away from the locking notch, the third inclined surface 612 is opposite to the second inclined surface 622, and the third protrusion 733 is located between the second inclined surface 622 and the third inclined surface 612. When the brake release member 62 is pressed to release, the second inclined surface 622 gives up the moving path of the third protrusion 733, the brake release member 62 drives the brake closing member 61 to move towards the outside of the base 1 through the first transmission member 41, the third inclined surface 612 contacts the third protrusion 733 and pushes the third protrusion 733 towards the second inclined surface 622, the first locking body 711 is driven to rotate downwards to the unlocking position, the extension portion 734 retracts into the base 1, the second protrusion 732 enters the first limiting groove 7222 along the second limiting groove 7223, and the unlocking member 72 can move along the first moving direction X to unlock the first locking member 71.

In the opening state, one end of the third inclined surface 612, which is far away from the locking opening, is blocked at the other side of the third protruding portion 733, so as to limit the second locking member 73 to the unlocking position, the extension portion 734 is retracted into the base 1, structural interference between the extension portion 734 and the exterior of the circuit breaker is avoided, and the circuit breaker can conveniently enter and exit the installation position in the opening state. At this time, the second protrusion 732 is located in the first limit groove 7222, the unlocking member 72 can move in the first moving direction X, the first locking member 71 can extend out of the base 1 to limit the circuit breaker at the installation position, and the first locking member 71 can also retract into the base 1 to unlock the circuit breaker under the driving of the unlocking member 72, so that the circuit breaker can be pulled out from the installation position.

In addition, when the second protrusion 732 is located in the first limiting groove 7222, two sidewalls of the first limiting groove 7222 can abut against two sides of the second protrusion 732 in the third moving direction Z, so as to limit the movement of the second protrusion 732 along the third moving direction Z, and further limit the switching-on/off mechanism 4 linked with the second protrusion 732 from switching-off state to switching-on state, thereby preventing the safety risk caused by accidental switching-on during the plugging process of the circuit breaker.

Alternatively, when the unlocking member 72 is pulled in the first moving direction X, the first locking member 71 can be driven to retract into the base 1 to unlock the circuit breaker, and the circuit breaker can be pulled out, so that the circuit breaker can be unlocked and pulled out by one action, and the operation steps are simplified.

In some embodiments, the second portion 7112 is provided with a fourth ramp 71121, the fourth ramp 71121 being directed towards one end of the circuit breaker for insertion into the installed position, the fourth ramp 71121 being forced during insertion of the circuit breaker into the installed position to retract the second portion 7112 into the base 1, thereby further simplifying the operation steps during insertion of the circuit breaker into the installed position without driving the first latch 71 into the base 1 by the unlatch 72.

In an embodiment of the present application, the first moving direction X is the pulling-out direction of the circuit breaker, the unlocking member 72 moves along the first moving direction X, and the movable iron core 52 moves along the first moving direction X when the electric mechanism 5 is powered on. In other embodiments, plunger 52 may also move in other directions.

According to the circuit breaker provided by the embodiment of the application, the working principle of the circuit breaker through electric control is as follows.

As shown in fig. 10, 11, 12 and 13, initially, the circuit breaker is opened, the moving contact 3 is separated from the fixed contact 2, the opening and closing mechanism 4 is in an opening state, the first transmission member 41 is in a first initial position, the second transmission member 42 is in a second initial position, and the shifting block 422 on the second transmission member 42 is limited in an avoidance position by the first limiting member 44 to yield the sliding chute 4122.

And (3) electrically controlling a closing process:

as shown in fig. 14 and 15, the coil of the electric mechanism 5 is energized to generate electromagnetic force, the movable iron core 52 approaches the static iron core 51 along the first moving direction X under the action of the electromagnetic force and compresses the iron core spring 53, so that the movable piece 54 connected to the movable iron core 52 moves along the first moving direction X and drives the shift lever 45, the shift lever 45 acts on the first stress surface 4123 to drive the first transmission piece 41 to rotate along the first time needle direction, the first transmission piece 41 drives the movable contact 3 to rotate along the first time needle direction through the first connecting piece 46 and pushes the second transmission piece 42 to rotate along the first time needle direction, when the first transmission piece 41 rotates to the closing position, the second transmission piece 42 rotates to the stopping position, the shift block 422 is separated from the limit of the first limit piece 44 and rotates to the blocking position under the action of the second elastic reset piece 423, and the movable contact 3 contacts the fixed contact 2, so that the circuit breaker is turned on.

Meanwhile, under the drive of the first transmission member 41, the closing member 61 moves towards the inside of the base 1, the opening member 62 moves towards the outside of the base 1, the opening member 62 limits the second locking member 73 to the locking position, the unlocking member 72 cannot move, and the first locking member 71 and the second locking member 73 jointly lock the circuit breaker.

After the circuit breaker is turned on, as shown in fig. 16 and 17, the coil is powered off, the iron core spring 53 drives the movable iron core 52 to extend away from the static iron core 51, so that the movable member 54 returns to the original position in the opposite direction of the first moving direction X and drives the shift lever 45, the shift lever 45 moves along the sliding groove 4122 and passes through the shift block 422, the shift block 422 is pushed by the shift lever 45 to the steering avoiding position so that the shift lever 45 can pass, and after the shift lever 45 passes through, the shift block 422 rotates to the blocking position under the action of the second elastic reset member 423.

The closing action is completed, as shown in fig. 2, the electric mechanism 5 is powered off, and all parts of the electric mechanism 5 are in place; the opening and closing mechanism 4 is in a closing state, the first rotating shaft 49, the first end 461 and the second end 462 are on the same straight line, so that the opening and closing mechanism 4 is self-locked at a dead point, the first transmission piece 41 is in a closing position, the second transmission piece 42 is in an stopping position, the first elastic reset piece compresses and accumulates elastic force, the deflector rod 45 is far away from the first stress surface 4123, and the deflector block 422 is positioned between the deflector rod 45 and the first stress surface 4123 and is in a blocking position; in the locking mechanism 7, the first locking member 71 and the second locking member 73 extend out of the base 1, and the unlocking member 72 cannot move.

Electrically controlling the brake separating process:

as shown in fig. 18 and 19, when the coil is energized to generate electromagnetic force, the movable iron core 52 approaches the stationary iron core 51 along the first moving direction X under the action of the electromagnetic force and compresses the iron core spring 53, so that the movable piece 54 connected to the movable iron core 52 moves along the first moving direction X and drives the shift lever 45, the shift lever 45 moves along the sliding groove 4122 to contact the shift block 422, and applies force to the shift block 422 to drive the second transmission piece 42 to rotate along the first time needle direction, the second transmission piece 42 rotates from the stop position to the opening position, the first protrusion 4212 of the second transmission piece 42 interferes with the second protrusion 32 of the movable contact 3 to push the movable contact 3 to rotate along the second time needle direction against the self-locking force and separate from the stationary contact 2, and the circuit breaker is opened.

After the breaker is opened, the coil is powered off, the iron core spring 53 drives the movable iron core 52 to be far away from the static iron core 51, so that the movable piece 54 returns to the original position along the opposite direction of the first moving direction X, and the deflector rod 45 moves along the chute 4122 and returns to the original position; the second transmission member 42 is rotated from the opening position to the second initial position in the second clockwise direction under the action of the first elastic reset member, and pushes the first transmission member 41 to rotate back to the first initial position, the shifting block 422 is rotated back to the avoiding position under the action of the first limiting member 44, and the opening and closing mechanism 4 is in the opening and closing state.

Simultaneously, under the drive of the first transmission piece 41, the closing piece 61 moves towards the outside of the base body 1, the opening piece 62 moves towards the inside of the base body 1, the closing piece 61 limits the second locking piece 73 to the unlocking position, the second locking piece 73 unlocks the circuit breaker and the unlocking piece 72, the first locking piece 71 keeps extending out of the base body 1 under the action of the first elastic supporting piece 74, and the unlocking piece 72 can move to drive the first locking piece 71 to retract into the base body 1 to unlock the circuit breaker.

The brake-separating action is completed, as shown in fig. 1, the electric mechanism 5 is in a power-off state, and all parts of the electric mechanism 5 are in situ; the opening and closing mechanism 4 returns to the opening and closing state, the first transmission piece 41 is at a first initial position, the second transmission piece 42 is at a second initial position, the deflector rod 45 is positioned between the first stress surface 4123 and the deflector block 422, and the deflector block 422 is at an avoiding position; in the lock mechanism 7, the second lock piece 73 is retracted into the base 1, and the unlocking piece 72 is movable to drive the first lock piece 71 to retract into the base 1.

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

Claims

1. A circuit breaker, comprising:

a base body (1);

the fixed contact (2) is fixedly arranged on the base body (1);

a moving contact (3) movably arranged in the base body (1);

the opening and closing mechanism (4) comprises a first transmission piece (41) and a second transmission piece (42), wherein the first transmission piece (41) and the second transmission piece (42) are movably arranged on the base body (1) along a first direction, the first transmission piece (41) is connected with the moving contact (3), the first transmission piece (41) can drive the moving contact (3) to be connected with the fixed contact (2) along the first direction, and the second transmission piece (42) can push the moving contact (3) to be separated from the fixed contact (2) along the first direction;

a deflector rod (45) is movably arranged on the base body (1) along a first path, and the deflector rod (45) can move along the first path to deflect the first transmission piece (41) along the first direction;

an electric mechanism (5) for driving the lever (45) to move along the first path;

a dial (422) movably coupled to the second transmission member (42) and having a retracted position and a blocking position; -said dial (422) giving up said first path in said retracted position, so as to move said lever (45) along said first path to toggle said first transmission member (41); the shifting block (422) is blocked in the first path when in the blocking position, so that the shifting rod (45) shifts the second transmission piece (42) through the shifting block (422) when moving along the first path.

2. The circuit breaker of claim 1, further comprising:

the first rotating shaft (49) is fixedly arranged on the base body (1), and the first transmission piece (41) and the second transmission piece (42) are rotatably arranged on the first rotating shaft (49) along the first direction;

the first transmission piece (41) is provided with a sliding groove (4122), one end of the deflector rod (45) is connected with the electric mechanism (5), the other end of the deflector rod (45) moves in the sliding groove (4122), and the moving track is the first path.

3. The circuit breaker according to claim 2, wherein the paddle (422) is rotatably connected to the second transmission member (42), the paddle (422) straddling the chute (4122) in the blocking position, the paddle (422) yielding the chute (4122) in the let-down position.

4. A circuit breaker according to claim 3, characterized in that a receiving space is formed between the first transmission member (41) and the second transmission member (42), the projection of the sliding chute (4122) on the second transmission member (42) overlaps the receiving space, the shifting block (422) is located in the receiving space, and the other end of the shifting lever (45) passes through the sliding chute (4122) and extends into the receiving space.

5. Circuit breaker according to claim 4, characterized in that the chute (4122) extends in the circumferential direction of the first transmission member (41).

6. Circuit breaker according to any of claims 2-5, characterized in that the electric mechanism (5) comprises a fixed part fixedly arranged to the base body (1) and a movable part telescopically connected to the fixed part, one end of the lever (45) being connected to the movable part; the movable part moves to drive the other end of the deflector rod (45) to move in the chute (4122) so as to stir the first transmission piece (41) or the second transmission piece (42) to move along the first direction.

7. The circuit breaker according to claim 6, wherein the fixed portion comprises a frame (56), a coil, a stationary core (51) and a core spring (53), the movable portion comprises a movable core (52), the frame (56) is fixedly arranged on the base body (1), the coil is wound on the frame (56), a through hole is formed in the frame (56), the stationary core (51) is fixedly arranged at one end of the through hole, the movable core (52) is movably arranged in the through hole, one end of the movable core (52) is connected with the core spring (53), the other end of the movable core is provided with a movable member (54), one end of the deflector rod (45) is hinged to the movable member (54), and the movable core (52) is movably driven to move the deflector rod (45).

8. The circuit breaker according to claim 7, characterized in that said movable member (54) comprises a movable body (541) and a positioning portion (542), said movable body (541) being fixed to an end of said movable core (52) remote from said stationary core (51), said lever (45) being hinged to said movable body (541), said positioning portion (542) being connected to said movable body (541);

the base body (1) is provided with a positioning groove (12), the extending direction of the positioning groove (12) is the same as the moving direction of the movable iron core (52), and the positioning part (542) is slidably matched with the positioning groove (12).

9. The circuit breaker of claim 2, further comprising:

the second rotating shaft (31) is fixedly arranged on the base body (1), and the moving contact (3) is rotatably connected with the base body (1) through the second rotating shaft (31);

the first connecting piece (46), first connecting piece (46) include first end (461) and second end (462), first end (461) with first driving piece (41) are connected, second end (462) with moving contact (3).

10. The circuit breaker according to claim 9, wherein the second transmission member (42) is provided with a first protrusion (4212), the first protrusion (4212) being provided to an outer peripheral surface of the second transmission member (42) and extending in a radial direction of the second transmission member (42);

when the shift lever (45) shifts the second transmission member (42) to rotate along the first direction, the first protrusion (4212) interferes with the moving contact (3) to push the moving contact (3) to be separated from the fixed contact (2).