CN219163293U

CN219163293U - Locking mechanism of circuit breaker and circuit breaker

Info

Publication number: CN219163293U
Application number: CN202223361979.4U
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: 2023-06-09
Anticipated expiration: 2032-12-14

Abstract

The application relates to the technical field of piezoelectric devices, in particular to a locking mechanism of a circuit breaker and the circuit breaker. The circuit breaker includes shell and divide-shut brake mechanism, and divide-shut brake mechanism is in the shell, and the locking mechanism of circuit breaker includes: the base body is fixedly arranged in the shell; the first locking piece is movably arranged on the base body along the second moving direction and can extend out of the shell so as to lock the circuit breaker; the unlocking piece is movably connected to the base body along a first moving direction and is configured to drive the first locking piece to retract into the base body to unlock the circuit breaker when moving; the first moving direction and the second moving direction form a first preset angle, and the first preset angle is larger than zero degrees; the second locking piece is rotatably arranged on the base body and provided with a locking position for limiting the movement of the unlocking piece and an unlocking position for allowing the movement of the unlocking piece; the second locking piece is linked with the opening and closing mechanism, the second locking piece is positioned at a locking position when the opening and closing mechanism is closed, and the second locking piece is positioned at an unlocking position when the opening and closing mechanism is opened.

Description

Locking mechanism of circuit breaker and circuit breaker

Technical Field

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

On the basis of convenient plugging, the safety requirement and the stability requirement of the circuit breaker are not ignored, and the conditions of plugging the circuit breaker, accidentally disconnecting the circuit breaker from the installation position and the like in a closing state have adverse effects on the safety of electric equipment, the power supply stability and the personal safety of a user, so how to prevent the circuit breaker from being unplugged in the closing state and how to prevent the circuit breaker from accidentally disconnecting from the installation position are one of the keys for improving the safety and the stability of the circuit breaker.

Disclosure of Invention

The application aims at providing a locking mechanism of a circuit breaker and the circuit breaker so as to improve the safety and stability of the circuit breaker.

Embodiments of the present application are implemented as follows:

in a first aspect, embodiments of the present application provide a locking mechanism of a circuit breaker, the circuit breaker includes a switching on/off mechanism, the locking mechanism of the circuit breaker includes: a base; the first locking piece is movably arranged on the base body along the second moving direction and can extend out of the base body to lock the circuit breaker; the unlocking piece is movably connected to the base body along a first moving direction and is configured to drive the first locking piece to retract into the base body when moving so as to unlock the circuit breaker; the first moving direction and the second moving direction form a first preset angle, and the first preset angle is larger than zero degrees; the second locking piece is rotatably arranged on the base body and provided with a locking position for limiting the movement of the unlocking piece and an unlocking position for allowing the movement of the unlocking piece; the second locking piece is linked with the opening and closing mechanism, the second locking piece is positioned at the locking position when the opening and closing mechanism is closed, and the second locking piece is positioned at the unlocking position when the opening and closing mechanism is opened.

According to the locking mechanism of the circuit breaker, the first locking piece, the unlocking piece and the second locking piece which is linked with the opening and closing mechanism are arranged, under the cooperation of the first locking piece and the unlocking piece, the first locking piece can extend out of and retract into the base body, so that the circuit breaker can be locked and unlocked through the first locking piece when being plugged in the installation position, accidental release of the circuit breaker from the installation position is avoided, and the stability of the circuit breaker is improved; meanwhile, through the cooperation of the second locking piece and the unlocking piece, the second locking piece is linked with a switching-on and switching-off mechanism of the circuit breaker, the unlocking piece is allowed to move when switching off so that the first locking piece can retract into the base body for unlocking, the circuit breaker is convenient to plug in at the installation position or pull out from the installation position, the unlocking piece is limited to move when switching on so that the first locking piece can keep stretching out of the base body, under the limitation of the first locking piece, the circuit breaker cannot be pulled out from the installation position, the circuit breaker is prevented from being pulled out under the switching-on state, and the safety and the stability of the circuit breaker are improved.

In addition, in the technical scheme, the unlocking piece and the first locking piece are mutually linked and have different moving directions, the second locking piece moves along the first moving direction by limiting the unlocking piece so as to limit the first locking piece to move along the second moving direction, under the locking state of the first locking piece and the second locking piece, the unlocking piece, the first locking piece and the second locking piece form an integral stress, when the circuit breaker is pulled by a brute force, the pulling force is transmitted to each part along different directions after being dispersed through the connecting node of the unlocking piece and the second locking piece and the connecting node of the first locking piece and the unlocking piece, so that the capability of the circuit breaker for resisting the pulling by the brute force is improved, and the safety and the stability of the circuit breaker are improved.

In some embodiments of the present application, the unlocking member includes a holding portion, a connecting portion, and a driving portion, the connecting portion is movably connected with the base body along the first moving direction, the holding portion extends out of the base body for manual operation, and the driving portion is matched with the first locking member.

In the technical scheme, when the second locking piece is at the unlocking position, the hand holds the holding part of the unlocking piece, and when the unlocking piece is pulled outwards along the first moving direction, the driving part can drive the first locking piece to retract into the circuit breaker, so that the circuit breaker can be unlocked and pulled out through the action of pulling the unlocking piece, and the operation is more convenient.

In some embodiments of the present application, the driving portion is provided with a first inclined surface, the first locking member includes a first locking body and a first protrusion, the first locking body is extendably disposed on the base body, the first protrusion is connected to the first locking body, and the first protrusion is matched with the first inclined surface.

In the technical scheme, the unlocking piece and the first locking piece form inclined plane matching, so that on one hand, the driving matching of the unlocking piece and the first locking piece can be effectively realized; on the other hand, the unlocking piece and the first locking piece are not directly connected, one of the unlocking piece and the first locking piece is not easy to damage when being driven by brute force; furthermore, the unlocking piece and the first locking piece are convenient to produce and install respectively, and production difficulty and installation difficulty are reduced.

In some embodiments of the present application, the second direction of movement is perpendicular to the first incline.

In the technical scheme, the second moving direction is perpendicular to the first inclined plane, the acting force between the first inclined plane and the first locking piece is mainly along the second moving direction, and the component force in other directions is reduced, so that the first locking piece is driven to retract into the matrix by smaller force.

In some embodiments of the present application, the locking mechanism of the circuit breaker further includes: a first elastic support member disposed between the base and the first locking member, the first elastic support member having a tendency to allow the first locking member to protrude out of the base; the second elastic support piece is arranged between the base body and the unlocking piece and has a trend of enabling the unlocking piece to return to the initial position so that the first locking piece can extend out of the base body.

In the above technical scheme, when not receiving external force, under the effect of first elastic support piece and second elastic support piece, first locking piece keeps stretching out the base member, can guarantee to lock the circuit breaker when the circuit breaker is pegged graft in mounted position, prevents that the circuit breaker from deviating from by accident.

In some embodiments of the present application, the unlocking member is provided with a first limit groove and a second limit groove, the first limit groove is connected with the second limit groove, the first limit groove extends along the first moving direction, the second limit groove extends along a third moving direction, the third moving direction and the first moving direction form a second preset angle, and the second preset angle is greater than zero degrees; the second locking piece comprises a second locking body and a second protruding portion, the second protruding portion is arranged on the second locking body, the second protruding portion is matched with the first limiting groove when the second locking piece is in the unlocking position, and the second protruding portion is matched with the second limiting groove when the second locking piece is in the locking position.

In the technical scheme, the second convex part, the first limit groove extending along the first moving direction and the second limit groove extending along the third moving direction are arranged, when the second convex part is matched with the second limit groove, two side walls of the second limit groove are abutted against two sides of the second convex part in the first moving direction, and the unlocking piece is limited to move along the first moving direction, so that the first locking piece is kept to extend to lock the circuit breaker; when the opening and closing mechanism is opened, the second protruding portion is driven to move along the third moving direction and enter the first limiting groove, and when the second protruding portion is matched with the first limiting groove, the second protruding portion can move along the first limiting groove, so that the unlocking piece can move along the first moving direction relative to the second locking piece, and unlocking of the first locking piece is achieved. In addition, correspondingly, after the unlocking piece moves, two side walls of the first limiting groove can be abutted against two sides of the second protruding portion in the third moving direction so as to limit the second protruding portion to move along the third moving direction, and further limit the switching-on and switching-off mechanism linked with the second protruding portion to be switched into a switching-on state from a switching-off state, so that safety risks caused by accidental switching-on of the circuit breaker in the plugging process are prevented.

In some embodiments of the present application, the second locking member further includes an extension portion connected to the second locking body, the extension portion extending out of the base body to lock the circuit breaker when the second locking member is in the locked position, and the extension portion retracting into the base body to unlock the circuit breaker when the second locking member is in the unlocked position.

In the technical scheme, the extension part is arranged on the second locking piece, so that the second locking piece can lock the unlocking piece in the locking position, the extension part of the second locking piece can also lock the circuit breaker together with the first locking piece, the capacity of resisting the brute force plug-in is improved, and the circuit breaker is further prevented from being plugged in and pulled out in a closing state.

In some embodiments of the present application, the substrate is formed with a first blocking surface and a second blocking surface, the first blocking surface and the second blocking surface are disposed opposite to each other along the first moving direction, and the connection portion is formed with a bump, and the bump is disposed between the first blocking surface and the second blocking surface.

In the above technical solution, on one hand, the first blocking surface, the second blocking surface and the bump cooperate to limit the movement travel of the unlocking member; on the other hand, when the unlocking member is pulled, the projection acts on the first blocking surface or the second blocking surface to transmit the outwardly pulling force to the base body.

In a second aspect, embodiments of the present application further provide a circuit breaker, including: the locking mechanism of the circuit breaker of any one of the first aspect, the unlocking member of the locking mechanism of the circuit breaker being movable to drive the first locking member to unlock the circuit breaker, the second locking member of the locking mechanism of the circuit breaker restricting a locked position in which the unlocking member moves and an unlocked position in which the unlocking member is allowed to move; the switching-on and switching-off mechanism is used for driving the second locking piece to move between the locking position and the unlocking position, the second locking piece is located at the locking position when the switching-on and switching-off mechanism is switched on, and the second locking piece is located at the unlocking position when the switching-on and switching-off mechanism is switched off.

In the technical scheme, the circuit breaker is locked at the installation position when the first locking piece stretches out, the circuit breaker is prevented from being accidentally separated from the installation position, the first locking piece can be retracted into the base body by moving the unlocking piece, the circuit breaker can be plugged into the installation position or pulled out from the installation position, meanwhile, the second locking piece is driven by the switching-on mechanism to limit the unlocking piece to move when the switching-on is performed, the first locking piece can be kept to stretch out, the circuit breaker can be prevented from being pulled out in a switching-on state, the circuit stability of the circuit breaker is guaranteed, the safety risk caused by pulling out operation in the switching-on state is prevented, and the stability and the safety of the circuit breaker are improved.

In some embodiments of the present application, the second locking member includes a second locking body and a third protrusion, the third protrusion being disposed on the second locking body; the opening and closing mechanism comprises an opening and closing part, the opening and closing part and the closing part are oppositely arranged on two sides of the third protruding part, the opening and closing part is provided with a second inclined plane, the closing part is provided with a third inclined plane, the second inclined plane is matched with the third protruding part to enable the second locking part to be in the locking position when the opening and closing mechanism is closed, and the third inclined plane is matched with the third protruding part to enable the second locking part to be in the unlocking position when the opening and closing mechanism is opened.

In the above technical scheme, the second locking piece is provided with the third convex part, the opening and closing mechanism comprises opening and closing pieces respectively arranged at two sides of the third convex part, the opening and closing pieces move relatively in the closing process, the opening and closing pieces move back respectively in the opening process, the opening and closing pieces are provided with second inclined planes, the closing piece is provided with the third inclined planes, the second inclined planes and the third inclined planes are respectively matched with the third convex part to drive the second locking piece to move, namely, the third inclined planes are separated from the third convex part during closing, the opening and closing piece drives the third convex part through the second inclined planes to enable the second locking piece to reach the locking position, and the second inclined planes are separated from the third convex part during opening and drive the third convex part through the third inclined planes to enable the second locking piece to reach the unlocking position. Through the cooperation of separating brake spare, the closing part and the third convex part that have the third inclined plane that have the second inclined plane, guarantee that the second locking piece can be limited in locking position or unblock position, avoid the second locking piece to displace under the combined floodgate state and lead to the unexpected unblock of unblock to avoid influencing the stability and the security of circuit breaker, still avoid the second locking piece to displace under the separating brake state and lead to the unblock activity limited, in order to avoid influencing the circuit breaker plug.

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 limiting the scope, and that 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 on state of a circuit breaker according to an embodiment of the present disclosure;

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

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

fig. 4 is a schematic diagram of a switching-off and switching-on mechanism in a switching-off state according to an embodiment of the present disclosure;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic diagram of a second transmission member in a brake-off state according to an embodiment of the present disclosure;

FIG. 7 is an enlarged view of a portion of FIG. 6;

fig. 8 is a schematic diagram of a closing process of a closing/opening mechanism according to an embodiment of the present disclosure;

FIG. 9 is an enlarged view of a portion of FIG. 8;

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

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

fig. 12 is a schematic diagram of a switching-off process of a switching-off and switching-on mechanism according to an embodiment of the present disclosure;

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

fig. 14 is a schematic view of a first locking member and a second locking member of a locking mechanism of a circuit breaker according to an embodiment of the present disclosure;

fig. 15 is a schematic view of a first locking member locking and a second locking member unlocking of a locking mechanism of a circuit breaker according to an embodiment of the present application;

fig. 16 is a schematic diagram of unlocking both the first locking member and the second locking member of the locking mechanism of the circuit breaker according to an embodiment of the present application;

FIG. 17 is a schematic view of a second locking member in an unlocked position according to an embodiment of the present disclosure;

FIG. 18 is a schematic view of a second locking member according to an embodiment of the present disclosure in a locked position;

fig. 19 is a schematic view of a first perspective of an unlocking member according to an embodiment of the present disclosure;

fig. 20 is a second view schematic diagram of an unlocking member according to an embodiment of the present disclosure;

FIG. 21 is a schematic view of a portion of a base for mounting a locking mechanism provided in an embodiment of the present application;

FIG. 22 is a schematic view of a first locking member according to an embodiment of the present disclosure;

FIG. 23 is a schematic view of a second locking member according to an embodiment of the present disclosure;

FIG. 24 is a schematic view of a brake release member according to an embodiment of the present disclosure;

fig. 25 is a schematic view of a closing member according to an embodiment of the present disclosure;

icon: 1-a base body, 13-a positioning key, 14-a first mounting hole, 15-a second mounting hole, 16-a first blocking surface, 17-a second blocking surface, 18-a first guiding surface, 2-a fixed contact, 3-a moving contact, 31-a second rotating shaft, 32-a second protrusion, 4-a switching-on/switching-off mechanism, 41-a first transmission member, 4113-a notch, 4122-a sliding groove, 42-a second transmission member, 4211-a third protrusion, 4212-a first protrusion, 422-a toggle piece, 423-a second elastic restoring member, 44-a first limiting member, 45-a toggle lever, 46-a first connecting member, 47-a second connecting member, 48-a third connecting member, 49-a first rotating shaft, 5-an electric mechanism, 61-a switching-on member, 611-a first groove, 612-third ramp, 62-opening part, 621-second recess, 622-second ramp, 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 ramp, 712-first projection, 713-guiding lever, 72-unlocking part, 721-grip part, 722-connecting part, 7221-bar slot, 7222-first limiting slot, 7223-second limiting slot, 7224-projection, 7225-positioning hole, 723-driving part, 7231-first ramp, 73-second locking part, 731-second locking body, 732-second projection, 733-third projection, 734-extension, 74-first elastic support, 75-second elastic support, 8-flexible connection.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the 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. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, 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 one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

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," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured 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 terms in this application will be understood by those of ordinary skill in the art in a specific context.

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, the embodiment of the present application provides a circuit breaker, which includes a housing (not shown in the drawings), a base 1, a moving contact 3, a fixed contact 2, an opening and closing mechanism 4, an electric mechanism 5, and a locking mechanism 7.

The base body 1 is used for installing functional components of the circuit breaker such as the moving contact 3, the fixed contact 2, the opening and closing mechanism 4, the electric mechanism 5, the locking mechanism 7 and the like, and the shell is arranged around the base body 1 in a surrounding manner so as to play a role in isolation and protection. It should be noted that the housing is not necessarily a completely closed structure, but is functionally provided with openings, via holes, or the like for connecting the internal functional components with external lines. In some embodiments, the housing forms an interior space independently, and the substrate 1 is disposed within the interior space of the housing. In other embodiments, the base 1 and the housing together define an interior space.

For ease of viewing, the drawings provided by the embodiments of the present application exclude the housing.

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 opening and closing mechanism 4 is linked with the moving contact 3. 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 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 electric mechanism 5 may be an electric cylinder, an electromagnetic mechanism, or the like.

The locking mechanism 7 is used for locking the circuit breaker at an installation position, the locking mechanism 7 is in linkage with the opening and closing mechanism 4, the circuit breaker is locked at the installation position when the opening and closing mechanism 4 is closed, the circuit breaker is allowed to be pulled out under the condition that external force is applied when the opening and closing mechanism 4 is opened, so that the circuit breaker is prevented from being accidentally pulled out in a closing state, and the circuit breaker is prevented from being plugged in and pulled out in the closing state.

The structure of the opening and closing mechanism 4 is shown in connection with fig. 1-3.

The opening and closing mechanism 4 includes a first transmission member 41 and a second transmission member 42, and an opening and closing member 62 and a closing member 61.

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 and the second transmission member 42 are both rotatably connected to the base 1 via a 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 movable contact 3 is rotatably connected to the base 1 through a second rotation shaft 31. The first connecting piece 46 connects the first transmission piece 41 and the moving contact 3.

The closing member 61 and the opening member 62 are respectively and movably arranged on the base 1, one end of the closing member 61 and one end of the opening member 62 are both arranged in the base 1 and are matched with the first transmission member 41, and the other end of the closing member 61 and the other end of the opening member 62 respectively extend out of the base 1 for being pressed by a human hand.

As shown in fig. 3, the opening and closing mechanism 4 further includes a second connecting member 47 and a third connecting member 48. Both ends of the second connecting member 47 are hinged to the first transmission member 41 and the closing member 61, respectively. Both ends of the third connecting member 48 are hinged to the first transmission member 41 and the brake release member 62, respectively.

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.

As shown in fig. 4 and 5, in the opening state, the first transmission member 41 is at the first initial position, and the other end of the closing member 61 extends out of the base 1 for being pressed by a human hand. Pressing the other end of the closing member 61 causes the closing member 61 to move 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 along 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, the moving contact 3 is connected with the fixed contact 2, and simultaneously, the first transmission member 41 drives the opening member 62 to move toward the outside of the base 1 through the third connection member 48, so that the other end of the opening member 62 extends out of the base 1.

As shown in fig. 10 and 11, 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 switch is required to be switched to the switch-off state, the other end of the switch-off member 62 is pressed to enable the switch-off member 62 to move towards the inside of the base body 1, the third connecting member 48 drives the first transmission member 41 to rotate from the switch-on position to the first initial position along the second clockwise direction, so that the switch-off and switch-on mechanism 4 is switched to the switch-off state, the movable contact 3 is separated from the fixed contact 2, and meanwhile, the first transmission member 41 drives the switch-on member 61 to move towards the outside of the base body 1 through the second connecting member 47, so that the other end of the switch-on member 61 extends out of the base body 1.

Therefore, through 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 first transmission member 41 is unidirectionally in driving engagement with the second transmission member 42. Illustratively, as shown in connection with fig. 1 and 2, the first transmission member 41 is formed with a notch, and 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. Therefore, when the first transmission member 41 moves to the closing position and the moving contact 3 is connected with the fixed contact 2, one side wall of the notch is abutted against the third protrusion, and the third protrusion 4211 drives the second transmission member 42 to move to the middle position. At this time, the third protrusion 4211 can move from one side of the notch to the other side, thereby allowing the second transmission member 42 to continue moving in the first time needle direction with respect to the first transmission member 41.

As described above, the first transmission member 41 has the first initial position and the closing position, and the second transmission member 42 has the second initial position and the intermediate position, and when the first transmission member 41 moves from the first initial position to the closing position, the second transmission member 42 is driven to move from the second initial position to the intermediate position. The second transmission member 42 further has a brake release position, and the second transmission member 42 can reach the brake release position when moving relative to the first transmission member 41 in the first time needle direction.

The second transmission member 42 has a first protrusion 4212, the first protrusion 4212 is located at an outer periphery of the second transmission member 42, and the first protrusion 4212 protrudes in a radial direction of the second transmission member 42. As shown in fig. 3, the outer periphery of the movable contact 3 is provided with a second protrusion 32. When the second transmission member 42 rotates from the intermediate position to the opening position, the first protrusion 4212 will interfere with the second protrusion 32, thereby pushing the moving contact 3 to rotate and disengage from the fixed contact 2.

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, the first elastic restoring member having a tendency to restore the second transmission member 42 to the second initial position in the second clockwise direction. The first elastic restoring member is configured to accumulate elastic force in a closing state, and release the elastic force to drive the second transmission member 42 to restore after the moving contact 3 is separated from the fixed contact 2.

That is, after the moving contact 3 is pushed to separate from the fixed contact 2, the second transmission member 42 will rotate back to the second initial position along the second clockwise direction under the action of the first elastic reset member, and under the cooperation of the third protrusion 4211 and the sidewall of the notch, the first transmission member 41 is driven to return to the first initial position, so as to complete the opening.

Therefore, the first transmission member 41 is shifted by the electric mechanism 5 to switch on the opening and closing mechanism, so that the moving contact 3 is connected with the fixed contact 2, the switching-on member 61 moves towards the inside of the base body 1, and the opening and closing member 62 moves towards the outside of the base body 1; the second transmission member 42 is shifted by the electric mechanism 5 to open the opening and closing mechanism, so that the moving contact 3 is separated from the fixed contact 2, the closing member 61 is moved towards the outside of the base body 1, and the opening and closing member 62 is moved towards the inside of the base body 1.

As shown in fig. 14 to 23, the lock mechanism 7 includes a first lock piece 71, a second lock piece 73, and an unlock piece 72.

The locking mechanism 7 is arranged in a housing provided with a via (not shown) for allowing the first locking member 71 to protrude for locking the circuit breaker.

As shown in fig. 15 and 16, the first locking member 71 is provided movably to the base 1 in the second moving direction, and the first locking member 71 can lock the circuit breaker in the installation position when extending out of the base 1. It should be noted that "protruding the base 1" as used herein refers to that the projection of the component onto the base 1 exceeds the edge of the base 1, and that the first locking member 71 protrudes out of the base 1 refers to that a portion of the first locking member 71 protrudes beyond the edge of the base 1 so that the protruding portion protrudes out of the housing from the via.

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. 17 and 18, 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. 19 and 20, 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. 21, the positioning key 13 is provided to the base 1, and as shown in fig. 19, 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. 16, 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. 22, 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. 15 and 16, 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. 15, 16 and 21, the base 1 is provided with first mounting holes 14, and the first mounting holes 14 extend 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.

It should be noted that, in the drawings of the embodiment of the present application, the second moving direction Y is approximately perpendicular to the first moving direction X, but in other embodiments, the second moving direction Y may be disposed at other angles with respect to the first moving direction X, for example: the second moving direction Y is offset to the right by a certain angle, that is, the opening end of the first mounting hole 14 is offset to the right, the first mounting hole 14 extends from the right up to the left down, the guide rod 713 of the first locking member 71 is adapted to the first mounting hole 14, and when the first locking member 71 moves along the second moving direction Y, it moves to extend toward the right up or moves to retract toward the left down. By setting the second moving direction Y to be offset rightward so that the second moving direction Y tends to be perpendicular to the first inclined surface 7231, the force between the first inclined surface 7231 and the first locking member 71 is mainly in the second moving direction Y, and the component force in the other direction is reduced, which is advantageous in that the retraction of the first locking member 71 into the base 1 is achieved by a smaller force.

In some embodiments, as shown in fig. 15, 16 and 21, 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. 19, 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. The positioning hole 7225 and the first blocking surface 16 are respectively located at two sides of the positioning key 13, when the unlocking piece 72 is pulled outwards, the bottom surface of the positioning hole 7225 bears the pressure transmitted by the second elastic supporting piece 75, so that the bottom surface of the positioning hole 7225 and the first blocking surface 16 share the stress at two sides of the positioning key 13 together, and the stress of the positioning key 13 is further reduced, so that the positioning key 13 is prevented from being damaged.

As shown in fig. 22, 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 hole, the second portion 7112 is connected to the third blocking surface 71111, the second portion 7112 can extend out of the locking hole, 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. 22, 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. 23, 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. 20, 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. 15, 16, 17 and 20, 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. 18, the second locking body 731 is in a locked position when rotated near the locking notch. As shown in fig. 17, 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 opening and closing mechanism 4 is interlocked with the second locking member 73 to lock and unlock the circuit breaker. 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 intermediate 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. 23, 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. 24, 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. 17 and 18, 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. 25, 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 one 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. 4, 5, 6 and 7, 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, and the second transmission member 42 is in a second initial position. At this time, the lock mechanism 7 is unlocked.

The process of electrically controlling closing and locking:

as shown in fig. 8 and 9, the movable member 54 of the electric mechanism 5 moves along the first moving direction X and drives the shift lever 45, the shift lever 45 drives the first transmission member 41 to rotate along the first time needle direction, the first transmission member 41 drives the movable contact 3 to rotate along the first time needle direction through the first connection member 46, and pushes the second transmission member 42 to rotate along the first time needle direction, when the first transmission member 41 rotates to the closing position, the second transmission member 42 rotates to the middle position, the shift block 422 is separated from the restriction of the first limiting member 44 and rotates to cross the sliding groove 4122 under the action of the second elastic reset member 423, and the movable contact 3 contacts the fixed contact 2, so that the circuit breaker is closed.

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. 10 and 11, the electric mechanism is powered off, the shift lever 45 is driven in the opposite direction, the shift lever 45 moves along the sliding groove 4122 and passes the shift block 422, the shift block 422 is pushed by the shift lever 45 to one side of the steering sliding groove 4122, so that the shift lever 45 can pass, and after the shift lever 45 passes, the shift block 422 rotates to the seventh position under the action of the second elastic reset piece 423.

The closing action is completed, as shown in fig. 2, 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 is in a closing state, the first transmission piece 41 is in a closing position, the second transmission piece 42 is in an intermediate position, and the first elastic reset piece compresses and accumulates elastic force; the first locking piece 71 and the second locking piece 73 of the locking mechanism 7 extend out of the base 1, the unlocking piece 72 cannot move, and the circuit breaker is locked in the installation position.

Electrically controlling the opening and unlocking process:

as shown in fig. 12 and 13, the electric mechanism 5 is energized 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 member 42 to rotate along the first time needle direction, the second transmission member 42 rotates from the intermediate position to the opening position, the first protrusion 4212 of the second transmission member 42 interferes with the second protrusion 32 of the moving contact 3 to push the moving contact 3 to rotate and separate from the fixed contact 2, and the circuit breaker is opened.

After the breaker is opened, the electric mechanism 5 returns to the original position in the opposite direction, and drives the deflector rod 45 to move along the chute 4122 and return to the original position; the second transmission member 42 rotates from the opening position to the second initial position along the second clockwise direction under the action of the first elastic reset member, pushes the first transmission member 41 to rotate back to the first initial position, and the shifting block 422 rotates to one side of the sliding groove 4122 under the action of the first limiting member 44, so that the opening and closing mechanism 4 is in an opening 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, and the second transmission piece 42 is at a second initial position; the locking mechanism 7 is in an unlocking state, the second locking piece 73 is retracted into the base body 1, the unlocking piece 72 can move to drive the first locking piece 71 to retract into the base body 1, at the moment, the unlocking piece 72 can be pulled to retract the first locking piece 71, then the circuit breaker is pulled out of the installation position by using pulling force, when the pulled-out circuit breaker is inserted towards the installation position, the inner wall of the equipment at the installation position can squeeze the first locking piece 71, so that the circuit breaker can be inserted into the installation position, and the first locking piece 71 elastically stretches out into a lock shell in the installation position after the circuit breaker is inserted into the installation position, so that the circuit breaker is limited to fall off.

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

Claims

1. A locking mechanism of a circuit breaker, the circuit breaker comprising a switching-off and switching-on mechanism (4), characterized in that the locking mechanism (7) of the circuit breaker comprises:

a base body (1);

a first locking member (71) movably provided to the base (1) in a second moving direction and capable of extending out of the base (1) to lock the circuit breaker;

an unlocking member (72) movably connected to the base (1) along a first movement direction, the unlocking member (72) being configured to, when moved, bring the first locking member (71) into retraction with the base (1) to unlock the circuit breaker; the first moving direction and the second moving direction form a first preset angle, and the first preset angle is larger than zero degrees;

a second lock member (73) rotatably provided to the base body (1) and having a lock position in which the movement of the unlock member (72) is restricted and an unlock position in which the movement of the unlock member (72) is allowed; the second locking piece (73) is linked with the opening and closing mechanism (4), the second locking piece (73) is located at the locking position when the opening and closing mechanism (4) is closed, and the second locking piece (73) is located at the unlocking position when the opening and closing mechanism (4) is opened.

2. The locking mechanism of a circuit breaker according to claim 1, characterized in that the unlocking member (72) comprises a grip portion (721), a connecting portion (722) and a driving portion (723), the connecting portion (722) being movably connected with the base body (1) along the first moving direction, the grip portion (721) extending out of the base body (1) for manual operation, the driving portion (723) being mated with the first locking member (71).

3. The locking mechanism of the circuit breaker according to claim 2, characterized in that the driving part (723) is provided with a first inclined surface (7231), the first locking member (71) comprises a first locking body (711) and a first protruding part (712), the first locking body (711) is extendably provided to the base body (1), the first protruding part (712) is provided to the first locking body (711), and the first protruding part (712) is mated with the first inclined surface (7231).

4. A locking mechanism of a circuit breaker according to claim 3, characterized in that the second direction of movement is perpendicular to the first ramp (7231).

5. The locking mechanism of the circuit breaker of claim 2, wherein the locking mechanism of the circuit breaker further comprises:

-a first elastic support (74) arranged between the base body (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 body (1);

And a second elastic support member (75) provided between the base body (1) and the unlocking member (72), the second elastic support member (75) having a tendency to return the unlocking member (72) to an initial position so that the first locking member (71) can protrude out of the base body (1).

6. The locking mechanism of a circuit breaker according to claim 2, wherein the unlocking member (72) is provided with a first limit groove (7222) and a second limit groove (7223), the first limit groove (7222) and the second limit groove (7223) are connected, the first limit groove (7222) extends along the first movement direction, the second limit groove (7223) extends along a third movement direction, the third movement direction is set at a second preset angle with the first movement direction, and the second preset angle is greater than zero degrees;

the second locking piece (73) comprises a second locking body (731) and a second protruding portion (732), the second protruding portion (732) is arranged on the second locking body (731), the second protruding portion (732) is matched with the first limit groove (7222) when the second locking piece (73) is in the unlocking position, and the second protruding portion (732) is matched with the second limit groove (7223) when the second locking piece (73) is in the locking position.

7. The locking mechanism of claim 6, wherein the second locking member (73) further comprises an extension (734), the extension (734) being connected to the second locking body (731), the extension (734) extending out of the base (1) to lock the circuit breaker when the second locking member (73) is in the locked position, the extension (734) retracting into the base (1) to unlock the circuit breaker when the second locking member (73) is in the unlocked position.

8. The locking mechanism of a circuit breaker according to claim 2, characterized in that the base body (1) is formed with a first blocking surface (16) and a second blocking surface (17), the first blocking surface (16) and the second blocking surface (17) being arranged opposite in the first movement direction, the connecting portion (722) being formed with a protrusion (7224), the protrusion (7224) being arranged between the first blocking surface (16) and the second blocking surface (17).

9. A circuit breaker, comprising:

the locking mechanism (7) of the circuit breaker according to any one of claims 1-8, the unlocking member (72) of the locking mechanism (7) of the circuit breaker being movable to drive the first locking member (71) to unlock the circuit breaker, the second locking member (73) of the locking mechanism (7) of the circuit breaker having a locking position limiting movement of the unlocking member (72) and an unlocking position allowing movement of the unlocking member (72);

The opening and closing mechanism (4) is used for driving the second locking piece (73) to move between the locking position and the unlocking position, the second locking piece (73) is located at the locking position when the opening and closing mechanism (4) is closed, and the second locking piece (73) is located at the unlocking position when the opening and closing mechanism (4) is opened.

10. The circuit breaker according to claim 9, characterized in that the second locking member (73) comprises a second locking body (731) and a third protrusion (733), the third protrusion (733) being arranged on the second locking body (731);

the opening and closing mechanism (4) comprises an opening and closing part (62) and a closing part (61), the opening and closing part (62) and the closing part (61) are oppositely arranged on two sides of the third convex part (733), the opening and closing part (62) is provided with a second inclined plane (622), the closing part (61) is provided with a third inclined plane (612), the second inclined plane (622) is matched with the third convex part (733) when the opening and closing mechanism (4) is closed so that the second locking part (73) is in the locking position, and the third inclined plane (612) is matched with the third convex part (733) when the opening and closing mechanism (4) is opened so that the second locking part (73) is in the unlocking position.