CN115910702A

CN115910702A - Locking mechanism of circuit breaker and circuit breaker

Info

Publication number: CN115910702A
Application number: CN202211608683.XA
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: 2023-04-04

Abstract

The application relates to the technical field of low-voltage apparatuses, 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 basal body is fixedly arranged in the shell; a first locking member movably disposed on the base in the second moving direction and capable of protruding out of the case 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 are arranged to form a first preset angle, and the first preset angle is larger than zero degree; the second locking piece is rotatably arranged on the base body and is provided with a locking position for limiting the unlocking piece to move and an unlocking position for allowing the unlocking piece to move; the second locking piece is linked with the opening and closing mechanism, the second locking piece is in a locking position when the opening and closing mechanism is switched on, and the second locking piece is in an unlocking position when the opening and closing mechanism is switched off.

Description

Locking mechanism of circuit breaker and circuit breaker

Technical Field

The application relates to the technical field of low-voltage apparatuses, in particular to a locking mechanism of a circuit breaker and the circuit breaker.

Background

Along with technical development, electrical equipment type, quantity increase, electrical equipment is miniaturized, intelligent gradually, and traditional power supply mode that a terminal circuit breaker connects a plurality of sockets is difficult to satisfy equipment power supply demand and equipment protection demand. In order to meet the power supply requirements of different electrical equipment, the plug-in circuit breaker is widely applied, the plug-in circuit breaker can be plugged in the installation position like a plug, the plug-in circuit breaker can be quickly and conveniently connected to a circuit, and can also be pulled out from the installation position like the plug, so that the plug-in circuit breaker can be quickly and conveniently detached from the circuit.

On the plug basis of being convenient for, the security requirement and the stability requirement of circuit breaker also can not neglect, and plug circuit breaker, circuit breaker deviate from the unexpected circumstances such as deviate from of mounted position under the combined floodgate state, all have harmful effects to consumer's security, power supply stability and user's personal safety, consequently how to prevent that the circuit breaker from being extracted under the combined floodgate state, how to prevent that the circuit breaker from deviating from the mounted position accident is one of the key that improves circuit breaker security and stability.

Disclosure of Invention

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

The embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides 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; a first locking member movably provided to the base in a second moving direction and capable of protruding out of the base to lock the circuit breaker; an unlocking piece movably connected to the base body along a first moving direction, wherein the unlocking piece 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 are arranged to form a first preset angle, and the first preset angle is larger than zero degree; the second locking piece is rotatably arranged on the base body and provided with a locking position for limiting the unlocking piece to move and an unlocking position for allowing the unlocking piece to move; the second locking piece is linked with the switching-off and switching-on mechanism, the second locking piece is located at the locking position when the switching-off and switching-on mechanism is switched on, and the second locking piece is located at the unlocking position when the switching-off and switching-on mechanism is switched off.

According to the locking mechanism of the circuit breaker, the first locking piece and the unlocking piece are arranged, and the second locking piece is linked with the opening and closing mechanism, under the matching of the first locking piece and the unlocking piece, the first locking piece can stretch out and retract into the base body, so that the circuit breaker can be locked and unlocked through the first locking piece when being inserted into the installation position, the circuit breaker is prevented from being accidentally separated from the installation position, and the stability of the circuit breaker is improved; simultaneously through setting up the cooperation of second locking piece and deblocking spare, the second locking piece links with the divide-shut brake mechanism of circuit breaker, allow deblocking spare to remove and make first locking piece can the indentation base member unblock when separating brake, be convenient for the circuit breaker peg graft in mounted position or extract from mounted position, restriction deblocking spare removes and makes first locking piece can keep stretching out the base member when closing a floodgate, under the restriction of first locking piece, the circuit breaker can't be extracted from mounted position, realize preventing that the circuit breaker from being extracted under the combined floodgate state, improve the security and the stability of circuit breaker.

In addition, in above-mentioned technical scheme, the unblock piece and first locking piece link each other and the moving direction is different, the second locking piece is through restricting the unblock piece and remove and then restrict first locking piece and remove along the second moving direction along first moving direction, under first locking piece and second locking piece locking state, the unblock piece, the whole atress that first locking piece and second locking piece constitute, when the circuit breaker receives the brute force and draws, the pulling force passes through the connected node of unblock piece and second locking piece, the connected node dispersion of first locking piece and unblock piece is followed different directions and is transmitted to each position, improve the ability that the circuit breaker resisted the brute force and draw, make the security and the stability of circuit breaker improve.

In some embodiments of the application, the unlocking member includes a holding portion, a connecting portion and an actuating 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 actuating portion is matched with the first locking member.

In above-mentioned technical scheme, the second locking piece is when the unblock position, and the portion of holding of unblock piece is held to the staff, and when outwards pulling the unblock piece along first moving direction, the drive division can drive first locking piece indentation circuit breaker, consequently can realize the circuit breaker unblock and extract through the action of drawing the unblock 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 extendably provided to the base body, and a first protrusion connected to the first locking body, the first protrusion being engaged 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 unlocking piece and the first locking piece can be effectively driven to be matched; on the other hand, the unlocking piece and the first locking piece are not directly connected, and when one of the unlocking piece and the first locking piece is driven by brute force, the other locking piece is not easy to damage; moreover, production, installation unlocking piece and first locking piece are convenient for respectively, reduce the production degree of difficulty and the installation degree of difficulty.

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

In the above technical scheme, the second moving direction is set to be 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 component forces in other directions are reduced, so that the first locking piece can be driven to retract into the base body through small force.

In some embodiments of the present application, the locking mechanism of the circuit breaker further comprises: a first resilient support member disposed between the base and the first latch member, the first resilient support member having a tendency to extend the first latch member beyond the base; a second elastic support disposed between the base and the unlocking member, the second elastic support having a tendency to return the unlocking member to an initial position so that the first locking member can protrude out of the base.

In above-mentioned technical scheme, when not receiving external force, under first elastic support piece and second elastic support piece's effect, 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 is unexpected to deviate from.

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

In the above technical solution, by providing the second protrusion, the first limiting groove extending along the first moving direction, and the second limiting groove extending along the third moving direction, when the second protrusion is fitted to the second limiting groove, two sidewalls of the second limiting groove abut against two sides of the second protrusion in the first moving direction, so as to limit the unlocking piece to move along the first moving direction, so that the first locking piece is kept protruding to lock the circuit breaker; when the opening and closing mechanism is opened, the second convex part is driven to move along the third moving direction and enter the first limiting groove, and when the second convex part is matched with the first limiting groove, the second convex part 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 the first locking piece is unlocked. In addition, correspondingly, after the unlocking piece moves, two side walls of the first limiting groove can abut against two sides of the second convex part in the third moving direction to limit the second convex part to move along the third moving direction, and further limit the switching-on and switching-off mechanism linked with the second convex part to be switched into a switching-on state from a switching-off state, so that the safety risk caused by accidental switching-on of the circuit breaker in the plugging and unplugging process is prevented.

In some embodiments of the present application, the second locking member further includes an extension portion, the extension portion is connected to the second locking body, the extension portion extends out of the base to lock the circuit breaker when the second locking member is in the locked position, and the extension portion retracts into the base 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 part, the second locking part can lock the unlocking part when being locked, the extension part of the second locking part can also lock the circuit breaker together with the first locking part, the capability of resisting brute force plugging is improved, and the circuit breaker can be further prevented from being plugged under a closing state.

In some embodiments of the present application, the base body is formed with a first blocking surface and a second blocking surface, the first blocking surface and the second blocking surface are oppositely disposed along the first moving direction, the connecting 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 projection cooperate to limit the moving stroke of the unlocking piece; on the other hand, when the unlocking element is pulled, the projection acts on the first blocking surface or the second blocking surface to transmit an outward pulling force to the base body.

In a second aspect, an embodiment of the present application further provides a circuit breaker, which includes: the locking mechanism of the circuit breaker according to any one of the first aspect, wherein the unlocking piece of the locking mechanism of the circuit breaker is movable to drive the first locking piece to unlock the circuit breaker, and the second locking piece of the locking mechanism of the circuit breaker limits a locking position where the unlocking piece moves and an unlocking position where the unlocking piece is allowed to move; and 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 in the locking position when the switching-on and switching-off mechanism is switched on, and the second locking piece is in the unlocking position when the switching-on and switching-off mechanism is switched off.

In the technical scheme, the circuit breaker locks in 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 inserted into the installation position or pulled out from the installation position, meanwhile, the second locking piece is driven by the opening and closing mechanism to limit the unlocking piece to move when the circuit breaker is closed, the first locking piece can be kept stretching out, the circuit breaker can be prevented from being pulled out under the closing state, the circuit where the circuit breaker is located is stable, the closing state is prevented from being pulled out, safety risks are caused, and the stability and the safety of the circuit breaker are improved.

In some embodiments of the present application, the second lock includes a second lock body and a third protrusion, the third protrusion being disposed on the second lock body; the switching-off and switching-on mechanism comprises a switching-off part and a switching-on part, the switching-off part and the switching-on part are arranged on two sides of the third convex part relatively, the switching-off part is provided with a second inclined plane, the switching-on part is provided with a third inclined plane, the second inclined plane is matched with the third convex part to enable the second locking part to be located at the locking position when the switching-off and switching-on mechanism is switched off, and the third inclined plane is matched with the third convex part to enable the second locking part to be located at the unlocking position when the switching-off and switching-on mechanism is switched off.

In the technical scheme, the second locking piece is provided with a third convex part, the switching-on and switching-off mechanism comprises a switching-off piece and a switching-on piece which are respectively arranged on two sides of the third convex part, the switching-on piece and the switching-off piece move relatively in the switching-on process, the switching-on piece and the switching-off piece move back in opposite directions in the switching-on process, the switching-off piece is provided with a second inclined plane, the switching-on piece is provided with a third inclined plane, the second inclined plane and the third inclined plane are respectively matched with the third convex part to drive the second locking piece to move, namely, the third inclined plane is separated from the third convex part in the switching-on process, the switching-off piece drives the third convex part through the second inclined plane to enable the second locking piece to reach the locking position, the second inclined plane is separated from the third convex part in the switching-off process, and the switching-on piece drives the third convex part through the third inclined plane to enable the second locking piece to reach the unlocking position. Through the separating brake spare that has the second inclined plane, closing brake spare and the cooperation of third convex part that has the third inclined plane, guarantee that the second locking piece can be injectd at latched position or unblock position, avoid the second locking piece displacement to lead to the unexpected unblock of unblock piece under the combined floodgate state, in order to avoid influencing the stability and the security of circuit breaker, it leads to the unblock piece activity to be limited still to avoid the second locking piece displacement under the separating brake state, 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 required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic diagram illustrating a closing state of a circuit breaker according to an embodiment of the present application;

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

fig. 3 is a schematic view of a switching on/off mechanism according to an embodiment of the present application;

fig. 4 is a schematic diagram of the opening and closing mechanism according to an embodiment of the present application in an opening state;

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

FIG. 6 is a schematic view of a second transmission member in an open 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 the switching-on/off mechanism according to an embodiment of the present application;

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

fig. 10 is a schematic diagram of a switching mechanism in a closing 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 view of a brake opening process of the opening and closing mechanism 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 illustrating 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 being locked;

fig. 15 is a schematic view illustrating a first latch member of a latch mechanism of a circuit breaker according to an embodiment of the present application being locked and a second latch member of the latch mechanism of the circuit breaker being unlocked;

fig. 16 is a schematic view illustrating a first latch and a second latch of a locking mechanism of a circuit breaker according to an embodiment of the present application being unlocked;

FIG. 17 is a schematic illustration of a second latch member in an unlatched position according to an embodiment of the present application;

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

FIG. 19 is a first perspective view of an unlocking member provided in accordance with an embodiment of the present application;

FIG. 20 is a second perspective view of an unlocking member according to an embodiment of the present application;

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

FIG. 22 is a schematic view of a first locking element provided in accordance with an embodiment of the present application;

FIG. 23 is a schematic view of a second latch according to an embodiment of the present application;

fig. 24 is a schematic view of a brake separating element according to an embodiment of the present application;

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

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 guide surface, 2-a fixed contact, 3-a movable contact, 31-a second rotating shaft, 32-a second protrusion, 4-a switching mechanism, 41-a first transmission member, 4113-a notch, 4122-a sliding chute, 42-a second transmission member, 4211-a third protrusion, 4212-a first protrusion, 422-a shifting block, 423-a second elastic reset member, 44-a first limiting member, 45-a shifting lever, 46-a first connection member, 47-a second connection member, 48-a third connection member, 49-a first rotating shaft, 5-an electric mechanism, 61-a switching member, 611-a first groove, 612-a third inclined plane, 62-a brake separating member, 621-a second groove, 622-a second inclined plane, 7-a locking mechanism, 71-a first locking member, 711-a first locking body, 7111-a first part, 71111-a third blocking plane, 71112-a second guide plane, 7112-a second part, 71121-a fourth inclined plane, 712-a first protrusion, 713-a guide rod, 72-a unlocking member, 721-a holding part, 722-a connecting part, 7221-a strip-shaped groove, 7222-a first limiting groove, 7223-a second limiting groove, 7224-a bump, 7225-a positioning hole, 723-a driving part, 7231-a first inclined plane, 73-a second locking member, 731-a second locking body, 732-a second protrusion, 733-a third protrusion, 734-extension, 74-first resilient support, 75-second resilient support, 8-flexible connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in 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 obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and closing, carrying, and opening/closing a current under an abnormal circuit condition within a prescribed time, and has two states of on and off. The breaker comprises a moving contact and a static contact. When the moving contact is connected with the static contact, the circuit breaker is switched on. When the moving contact is separated from the static contact, the breaker is disconnected.

As shown in fig. 1 and fig. 2, an embodiment of the present application provides a circuit breaker, where the circuit breaker includes a housing (not shown in the drawings), a base 1, a movable contact 3, a stationary contact 2, a switching mechanism 4, an electric mechanism 5, and a locking mechanism 7.

The base body 1 is used for installing the functional components of the circuit breakers such as the moving contact 3, the static contact 2, the switching-on and switching-off mechanism 4, the electric mechanism 5, the locking mechanism 7 and the like, and the shell is arranged around the base body 1 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 an opening or a wire through hole for connecting an internal functional component with an external circuit. In some embodiments, the housing independently forms an interior space, and the base 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 embodiments of the present application are provided with the housing hidden from view.

The static contact 2 is fixedly arranged on the base body 1, the moving contact 3 is movably arranged on the base body 1 so as to enable the moving contact 3 and the static contact 2 to be connected or separated, the circuit breaker is connected with a circuit where the circuit breaker is located when the moving contact 3 is connected with the static contact 2, and the circuit breaker is disconnected with the circuit where the circuit breaker is located when the moving contact 3 is separated from the static contact 2.

The switching-on and switching-off mechanism 4 is linked with the moving contact 3. The switching mechanism 4 has an open state and a closed state, and the switching mechanism 4 separates the moving contact 3 from the stationary contact 2 in the open state, and the switching mechanism 4 connects the moving contact 3 to the stationary contact 2 in the closed state.

The electric mechanism 5 is used for switching the switching-on/off mechanism 4 between a switching-off state and a switching-on state when the circuit breaker is powered on so as to realize automatic control of switching-on and switching-off of the circuit breaker, and after switching-on and switching-off, the circuit breaker is powered off and returns to an initial state. The electric mechanism 5 can adopt an electric cylinder, an electromagnetic mechanism and the like.

Locking mechanism 7 is used for locking the circuit breaker at the mounted position, and locking mechanism 7 and divide-shut brake mechanism 4 linkage lock with the circuit breaker at the mounted position when 4 combined floodgates of divide-shut brake mechanism, allow the circuit breaker to extract under the circumstances of being exerted external force when 4 combined floodgates of divide-shut brake mechanism to avoid the circuit breaker to deviate from in the accident of combined floodgate state, and avoid the circuit breaker to be inserted and pulled at the combined floodgate state.

The structure of the switching mechanism 4 is shown in fig. 1 to 3.

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

As shown in fig. 3, the circuit breaker further includes a first rotating shaft 49, a second rotating shaft 31, and a first link 46.

The first transmission member 41 and the second transmission member 42 are both rotatably connected to the base 1 via a first rotating shaft 49. Thus, the first transmission piece 41 and the second transmission piece 42 are both capable of rotating around the first rotating shaft 49 in a first clockwise direction and a second counterclockwise direction, which are opposite to each other.

The movable contact 3 is rotatably connected to the base 1 through a second rotating shaft 31. The first connecting member 46 connects the first transmission member 41 and the movable contact 3.

The switching-on part 61 and the switching-off part 62 are respectively movably arranged on the base body 1, one end of the switching-on part 61 and one end of the switching-off part 62 are both arranged in the base body 1 and matched with the first transmission part 41, and the other end of the switching-on part 61 and the other end of the switching-off part 62 respectively extend out of the base body 1 to be pressed by hands.

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

The opening/closing member 62, the closing member 61, and the first transmission member 41 are interlocked, and when the first transmission member 41 rotates, one of the opening/closing 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 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 being pressed by a human hand. The other end of the switching-on member 61 is pressed to enable the switching-on member 61 to move towards the inside of the base body 1, the first transmission member 41 is driven to rotate from the first initial position to the switching-on position along the first clock hand direction through the second connection member 47, so that the switching-on and switching-off mechanism 4 is switched to the switching-on state, the movable contact 3 is connected with the fixed contact 2, and meanwhile, the first transmission member 41 drives the switching-off member 62 to move towards the outside of the base body 1 through the third connection member 48, so that the other end of the switching-off member 62 extends out of the base body 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 being pressed by a human hand. When the switching state needs to be switched to the opening state, the other end of the opening part 62 is pressed to enable the opening part 62 to move towards the inside of the base body 1, the third connecting piece 48 drives the first transmission piece 41 to rotate from the closing position to the first initial position along the second clockwise direction, so that the opening and closing mechanism 4 is switched to the opening state, the movable contact 3 is separated from the fixed contact 2, and meanwhile, the first transmission piece 41 drives the closing part 61 to move towards the outside of the base body 1 through the second connecting piece 47, so that the other end of the closing part 61 extends out of the base body 1.

Therefore, through the switch-on part 61 and the switch-off part 62, the circuit breaker provided by the embodiment of the application can realize the on-off of the manual control circuit breaker.

The first transmission member 41 is engaged with the second transmission member 42 in a one-way transmission manner. Exemplarily, as shown in fig. 1 and 2, the first transmission piece 41 is formed with a notch, and the second transmission piece 42 is formed with a third protrusion 4211; as shown in fig. 3, third boss 4211 fits within notch 4113, and third boss 4211 is able to move within notch 4113. Therefore, the first transmission member 41 moves to the switching-on position, when the movable contact 3 is connected to the stationary contact 2, one sidewall of the notch abuts 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, so as to allow the second transmission piece 42 to move continuously in the first clock direction relative to the first transmission piece 41.

As mentioned above, the first transmission member 41 has the first initial position and the switching-on 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 switching-on 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 switch-off position, and the switch-off position can be reached when the second transmission member 42 moves relative to the first transmission member 41 in the first clock direction.

The second transmission member 42 has a first protrusion 4212, the first protrusion 4212 is located on the outer periphery of the second transmission member 42, and the first protrusion 4212 extends in the radial direction of the second transmission member 42. As shown in fig. 3, the movable contact 3 is provided with a second protrusion 32 on the outer periphery. When the second transmission member 42 rotates from the intermediate position to the opening position, the first protrusion 4212 interferes with the second protrusion 32, so as to push the movable contact 3 to rotate and separate from the fixed contact 2.

The switching-closing mechanism 4 further includes a first elastic restoring member (not shown in the figure), which is connected to the second transmission member 42, and the first elastic restoring member has a tendency to restore the second transmission member 42 to a second initial position along a second clockwise direction. The first elastic reset element is configured to accumulate an elastic force in a closing state, and release the elastic force to drive the second transmission element 42 to reset after the movable contact 3 is separated from the fixed contact 2.

That is to say, after the second transmission member 42 pushes the movable contact 3 to separate from the stationary contact 2, the movable contact rotates back to the second initial position in the second clockwise direction under the action of the first elastic reset member, and the third protrusion 4211 is matched with the sidewall of the gap to drive the first transmission member 41 back to the first initial position, thereby completing the opening operation.

Therefore, the switching-on and switching-off mechanism can be switched on by dialing the first transmission piece 41 through the electric mechanism 5, the movable contact 3 is connected with the fixed contact 2, the switching-on piece 61 moves towards the inside of the base body 1, and the switching-off piece 62 moves towards the outside of the base body 1; the second transmission part 42 is shifted by the electric mechanism 5 to enable the switching-on and switching-off mechanism to be switched off, the movable contact 3 is separated from the static contact 2, the switching-on part 61 moves towards the outside of the base body 1, and the switching-off part 62 moves towards the inside of the base body 1.

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

The locking mechanism 7 is disposed in a housing, which is provided with a through hole (not shown) for allowing the first locking member 71 to extend to lock the circuit breaker.

As shown in fig. 15 and 16, the first lock 71 is movably provided to the base 1 in the second moving direction, and the first lock 71 can lock the circuit breaker in the mounting position when protruding out of the base 1. It should be noted that "extending out of the base 1" described in the specification of the present application means that the projection of the component on the base 1 extends beyond the edge of the base 1, and if the first locking member 71 extends out of the base 1, it means that a part of the first locking member 71 extends out of the edge of the base 1, so that the extended part extends out of the housing through the through hole.

The unlocking piece 72 is movably connected to the base body 1, and the unlocking piece 72 is configured to drive the first locking piece 71 to retract into the base body 1 to unlock the circuit breaker when moving so as to pull the circuit breaker out of the installation position.

The second lock member 73 is engaged with the unlocking member 72, and the second lock member 73 is movably provided to the base 1, as shown in fig. 17 and 18, the second lock member 73 has a lock position and an unlock position, the second lock member 73 restricts the unlocking member 72 from moving when in the lock position, and the second lock member 73 allows the unlocking member 72 to move when in the unlock position.

Meanwhile, the second locking member 73 is linked with the switching-off and switching-on mechanism 4, the second locking member 73 is in a locking position when the switching-off and switching-on mechanism 4 is switched on, and the second locking member 73 is in an unlocking position when the switching-off and switching-on mechanism 4 is switched off.

Through set up locking mechanism 7 in the circuit breaker, second locking piece 73 is in the latched position when closing, makes unblock piece 72 unable removal, therefore unblock piece 72 can't drive first locking piece 71 indentation base member 1, and under the restriction of first locking piece 71, the circuit breaker can't be followed the mounted position and extracted, realizes preventing that the circuit breaker from being extracted under the state of closing, 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, 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 accidentally dropping off 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 plugged into or pulled out of the installation position.

Unlocking piece 72 is movably connected to base body 1 along first moving direction X, and first locking piece 71 sets up in base body 1 along second moving direction Y extensibly, and second locking piece 73 restricts unlocking piece 72 and removes along first moving direction X, and then avoids unlocking piece 72 drive first locking piece 71 to remove along second moving direction Y. The first moving direction X and the second moving direction Y form a first preset angle, and the first preset angle is larger than zero degree. In some embodiments, the first preset angle may be 90 °.

As shown in fig. 19 and 20, the unlocking member 72 includes a holding portion 721, a connecting portion 722 and an actuating portion 723, the connecting portion 722 is movably connected with the base 1, the holding portion 721 extends out from the base 1 for being held and pulled by a person, and the actuating portion 723 is used for actuating the first locking member 71 to retract.

One of the base body 1 and the connecting portion 722 is provided with a strip-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 is engaged with the strip-shaped groove 7221 to define the moving direction of the unlocking member 72.

Illustratively, as shown in fig. 21, the positioning key 13 is provided on the base 1, and as shown in fig. 19, a strip-shaped groove 7221 is provided on the connecting portion 722. Draw unblock piece 72 along first moving direction X, on the one hand, through the unblock of driving piece drive first latch 71 indentation base member 1, on the other hand, contradict the navigation key 13 through the terminal surface of bar groove 7221 to transmission drawing force to base member 1, thereby pull out the circuit breaker wholly when the unblock.

As shown in fig. 16, the base 1 further has 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 connecting portion 722 is formed with a projection 7224, and the projection 7224 is disposed between the first blocking surface 16 and the second blocking surface 17.

First stop face 16 cooperates with projection 7224 to limit movement of unlocking element 72 toward the exterior of base 1, and second stop face 17 cooperates with projection 7224 to limit movement of unlocking element 72 toward the interior of base 1.

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

As shown in fig. 22, the first lock 71 includes a first lock body 711 and a first protrusion 712, the first lock body 711 is provided to the base 1 so as to be extendable, and the first protrusion 712 is connected to the first lock body 711.

The driving part 723 is formed with a first slope 7231, and the first slope 7231 is engaged with the first protrusion 712.

When the unlocking member 72 moves, the first inclined surface 7231 moves relative to the first protrusion 712. As shown in fig. 15 and 16, when the unlocking member 72 moves outward of the base 1 in the first moving direction X, the first protrusion 712 moves along the first inclined surface 7231, and the first locking body 711 is retracted into the base 1. When the unlocking member 72 moves in the first moving direction X toward the base 1, the first protrusion 712 moves in the opposite direction to the first slope 7231, so that the first locking body 711 protrudes from the base 1.

In some embodiments, the locking mechanism 7 further comprises a first elastic support 74, the first elastic support 74 being disposed between the base 1 and the first locking member 71, the first elastic support 74 having a tendency to cause 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 a 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 guiding rod 713, one end of the guiding rod 713 is connected to the first locking body 711, the other end of the guiding rod 713 is inserted into the first mounting hole 14, the guiding rod 713 is sleeved with the first elastic supporting member 74, one end of the first elastic supporting 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 out of the base body 1, the first locking member 71 is driven to retract into the base body 1 and compress the first elastic support 74. When the unlocking member 72 moves toward the inside of the base body 1, the first elastic support 74 releases the elastic force to drive the first locking member 71 to extend out of the base body 1.

It should be noted that, in the drawings of the embodiment of the present application, the second moving direction Y is substantially perpendicular to the first moving direction X, but in other embodiments, the second moving direction Y may be disposed at other angles to the first moving direction X, such as: the second moving direction Y is shifted to the right by a certain angle, that is, the opening end of the first mounting hole 14 is shifted to the right, the first mounting hole 14 extends from the upper right to the lower left, the guide rod 713 of the first locking member 71 is fitted into the first mounting hole 14, and when the first locking member 71 moves along the second moving direction Y, the first locking member extends toward the upper right or retracts toward the lower left. By setting the second moving direction Y to be shifted to the right, the second moving direction Y tends to be perpendicular to the first inclined surface 7231, the acting force between the first inclined surface 7231 and the first locking member 71 is mainly along the second moving direction Y, and the component force in other directions is reduced, which is beneficial to driving the first locking member 71 to retract into the base body 1 with a small force.

In some embodiments, as shown in fig. 15, 16 and 21, the locking mechanism 7 further comprises a second elastic support 75, the second elastic support 75 is disposed between the base body 1 and the unlocking member 72, and the second elastic support 75 has a tendency to restore the unlocking member 72 to the original position to allow the first locking member 71 to protrude out of the base body 1.

The base body 1 is provided with a second mounting hole 15, the second mounting hole 15 extending in the first moving direction X. As shown in fig. 19, the unlocking member 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 on two sides of the positioning key 13, and 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 on two sides of the positioning key 13, and the stress on the positioning key 13 is further reduced, and 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 face 71111, the third blocking face 71111 is opposite to the locking opening, the second portion 7112 is connected to the third blocking face 71111, the second portion 7112 can extend out of the locking opening, and the third blocking face 71111 abuts against the inner wall of the housing to limit the first locking body 711 from being removed.

The base 1 is formed with a first guide surface 18, the first guide surface 18 being perpendicular to the plane of the locking notch, the first guide surface 18 contacting the first section 7111 to guide the second section 7112 to move out or retract. As shown in fig. 22, the first section 7111 is provided with a second guide surface 71112, and the second guide surface 71112 abuts the first guide surface 18.

The second lock member 73 is configured to restrict the unlocking member 72 from moving outward of the base body 1 to lock the first lock 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, and the second protrusion 732 is connected to the second locking body 731.

As shown in fig. 20, the unlocking member 72 is provided with a first limit groove 7222 and a second limit groove 7223, the first limit groove 7222 is connected to the second limit groove 7223, the first limit groove 7222 extends along the first moving direction X, the second limit groove 7223 extends along the 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 greater than zero degree. In some embodiments, the second predetermined angle is 90 °.

As shown in fig. 15, 16, 17, and 20, when the second lock member 73 is in the unlocked position, the second projection 732 is fitted in the first stopper groove 7222; when the second lock member 73 is in the lock position, the second projection 732 is fitted in the second stopper groove 7223.

One end of the second locking body 731 is rotatably connected to the base 1, and the second projection 732 is provided at the other end of the second locking body 731. When the second lock body 731 rotates, the second projection 732 moves along the second stopper groove 7223.

As shown in fig. 18, the second locking body 731 is in the locking position when rotated close to the locking notch. As shown in fig. 17, the second locking body 731 is in the unlocked position when rotated away from the locking notch.

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

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

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

As described above, the switching mechanism 4 locks and unlocks the circuit breaker by interlocking with the second lock member 73. The second locking member 73 is in the locking position when the switching mechanism 4 is switched on, and the second locking member 73 is in the unlocking position when the switching mechanism 4 is switched off.

There are various ways of linking the second lock member 73 and the opening/closing mechanism 4.

For example, the second locking member 73 may be directly connected to the switching mechanism 4 to achieve linkage. In some embodiments, the second locking member 73 may be connected to the first transmission member 41, the second locking member 73 is in the unlocked position when the first transmission member 41 is in the first initial position, and the second locking member 73 is in the locked position when the first transmission member 41 is in the closed position. In some embodiments, the second locking member 73 may be coupled to the second transmission member 42, the second locking member 73 being in the unlocked position when the second transmission member 42 is in the second initial position, and the second locking member 73 being in the locked position when the second transmission member 42 is in the intermediate position.

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

For another example, the second locking member 73 is not directly connected to the switching mechanism 4, but the second locking member 73 is toggled when the switching mechanism 4 switches the state. The second lock 73 may be engageable with at least one of the opening member 62 or the closing member 61 to move the second lock 73 between the unlocked position and the open 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 opening member 62 is provided with a second inclined surface 622, and the second inclined surface 622 cooperates with the third convex portion 733 when the door is closed, so that the second locking member 73 is in the locking position. Optionally, the opening member 62 is provided with a second groove 621, and a sidewall of the second groove 621 is inclined to form a second inclined surface 622.

The third protrusion 733 is located between the second inclined surface 622 and the locking notch, when the switch-on member 61 is pressed to switch on, the first transmission member 41 drives the switch-off member 62 to move toward the exterior of the base 1, and the second inclined surface 622 pushes the third protrusion 733, thereby pushing the second locking body 731 to rotate upward to the locking position. In a closing state, one end of the second inclined surface 622 close to the locking notch is blocked at one side of the third protrusion 733, so that the second locking piece 73 is limited at a locking position, the second protrusion 732 is located at one end of the second limiting groove 7223 far away from the first limiting groove 7222, so that the unlocking piece 72 is locked, the unlocking piece 72 cannot drive the first locking piece 71 to retract in the closing state, 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 an operator are protected.

Optionally, as shown in fig. 17 and 18, the second lock member 73 further includes an extending portion 734, and the extending portion 734 is connected to the second lock body 731. When second lock 73 is in the locked position, extension 734 extends beyond base 1; when second latch 73 is in the unlocked position, extension 734 retracts into base 1. The second lock member 73 is restricted to the lock position by the engagement of the third projection 733 and the trip member 62, and the circuit breaker can be locked not only by the second projection 732 but also by the extension 734. In a closing state, the first locking piece 71 and the second locking piece 73 lock the circuit breaker together, so that the capability of resisting brute force plugging 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 plugged in and pulled out in the closing state, and the safety of the circuit breaker is improved.

When the switching mechanism 4 needs to be switched to the switching state, the switching member 62 is pressed, the switching member 62 moves toward the inside of the base body 1, one end of the second inclined surface 622 close to the locking notch moves away from the moving path of the third convex part 733, the limitation on the third convex part 733 is removed, the second locking member 73 can move toward the unlocking position, the unlocking member 72 is unlocked, and the first locking member 71 and the second locking member 73 can retract into the base body 1.

In some embodiments, the opening part 62 and the closing part 61 are oppositely disposed at both sides of the third protrusion part 733. As shown in fig. 25, the closing member 61 is provided with a third inclined surface 612, and the third inclined surface 612 is engaged with the third convex part 733 to place the second lock member 73 at the unlock position when opening the brake. 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 projection 733 is located between the second inclined surface 622 and the third inclined surface 612. When the opening member 62 is pressed to open the door, the second inclined surface 622 leaves a moving path of the third protrusion 733, the opening member 62 drives the closing member 61 to move toward 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 toward the second inclined surface 622, the first locking body 711 is driven to rotate downwards to the unlocking position, the extending 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 in 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 notch, blocks the other side of the third protrusion 733, so as to limit the second locking member 73 to be limited at the unlocking position, the extension 734 retracts into the base 1, so that the extension 734 is prevented from interfering with the structure outside the circuit breaker, 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 limiting groove 7222, the unlocking piece 72 can move in the first moving direction X, the first locking piece 71 can extend out of the base body 1 to limit the circuit breaker at the installation position, and the first locking piece 71 can also retract into the base body 1 under the driving of the unlocking piece 72 to unlock the circuit breaker, 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 side walls of the first limiting groove 7222 can abut against two sides of the second protrusion 732 in the third moving direction Z to limit the second protrusion 732 from moving in the third moving direction Z, and further limit the switching-off and switching-on state of the switching-on and switching-off mechanism 4 linked with the second protrusion 732, so that the safety risk caused by accidental switching-on in the plugging-out and plugging-pulling process of the circuit breaker is prevented.

Optionally, the first moving direction X is the same as the pulling direction of the circuit breaker, and when the unlocking piece 72 is pulled along the first moving direction X, the first locking piece 71 can be driven to retract into the base body 1 for unlocking, and the circuit breaker can be pulled out, so that the circuit breaker can be unlocked and pulled out through one action, and the operation steps are simplified.

In some embodiments, the second portion 7112 is provided with a fourth inclined surface 71121, the fourth inclined surface 71121 faces one end of the circuit breaker for inserting into the installation position, and the fourth inclined surface 71121 is stressed during the process of inserting the circuit breaker into the installation position to enable the second portion 7112 to retract into the base body 1, so that the first locking piece 71 does not need to be driven to retract into the base body 1 through the unlocking piece 72 during the process of inserting the circuit breaker into the installation position, and the operation steps are further simplified.

In an embodiment of the present application, the first moving direction X is a pulling 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, the plunger 52 may move in other directions.

According to the circuit breaker provided by one embodiment of the application, the working principle of the circuit breaker controlled by an electric motor is as follows.

As shown in fig. 4, 5, 6 and 7, initially, the circuit breaker is opened, the movable contact 3 is separated from the fixed contact 2, the opening and closing mechanism 4 is in the opening state, the first transmission member 41 is in the first initial position, and the second transmission member 42 is in the second initial position. At this time, the locking mechanism 7 is unlocked.

Electrically controlling the processes of closing and locking:

as shown in fig. 8 and 9, the movable element 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 element 41 to rotate along the first clock direction, the first transmission element 41 drives the movable contact 3 to rotate along the first clock direction through the first connecting element 46, and pushes the second transmission element 42 to rotate along the first clock direction, when the first transmission element 41 rotates to the closing position, the second transmission element 42 rotates to the middle position, the shift block 422 is separated from the first limiting element 44 and rotates to span the sliding groove 4122 under the action of the second elastic reset element 423, and the movable contact 3 contacts the fixed contact 2, so that the circuit breaker is turned on.

Meanwhile, under the driving of the first transmission member 41, the closing member 61 moves towards the inside of the base body 1, the opening member 62 moves towards the outside of the base body 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 lock the circuit breaker together.

After the circuit breaker is switched 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 through the shift block 422, the shift block 422 is pushed by the shift lever 45 to turn to one side of the sliding groove 4122, so that the shift lever 45 can pass through, and after the shift lever 45 passes through, the shift block 422 rotates to the seventh position under the action of the second elastic reset piece 423.

Completing the closing action, 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 the original positions; the switching-on and switching-off mechanism 4 is in a switching-on state, the first transmission piece 41 is in a switching-on position, the second transmission piece 42 is in a middle position, and the first elastic resetting piece compresses and accumulates elastic force; the first locking piece 71 and the second locking piece 73 of the locking mechanism 7 both extend out of the base body 1, the unlocking piece 72 cannot move, and the circuit breaker is locked at the installation position.

Electrically controlling the processes of opening and unlocking:

referring to fig. 12 and 13, the electric mechanism 5 is powered on and drives the shift lever 45, the shift lever 45 moves along the sliding groove 4122 to contact the shift block 422, and applies a force to the shift block 422 to drive the second transmission member 42 to rotate along the first time axis direction, the second transmission member 42 rotates from the middle position to the opening position, the first protrusion 4212 of the second transmission member 42 interferes with the second protrusion 32 of the movable contact 3 to push the movable contact 3 to rotate and separate from the fixed contact 2, and the circuit breaker is disconnected.

After the breaker is disconnected, the electric mechanism 5 returns to the original position along the opposite direction, and drives the shift lever 45 to move along the sliding groove 4122 and return to the original position; the second transmission member 42 rotates back from the opening position to the second initial position along 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 rotates to one side of the sliding groove 4122 under the action of the first limiting member 44, and the opening and closing mechanism 4 is in the opening state.

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

The opening operation 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 the original positions; the opening and closing mechanism 4 returns to the opening state, the first transmission piece 41 is at the first initial position, and the second transmission piece 42 is at the second initial position; locking mechanism 7 is in the unblock state, second locking piece 73 indentation base member 1, unblock piece 72 can remove in order to drive first locking piece 71 indentation base member 1, unblock piece 72 can be drawn this moment and make first locking piece 71 retract, and then utilize the pulling force to extract the mounted position with the circuit breaker, when the circuit breaker that is extracted simultaneously inserts towards the mounted position, the equipment inner wall of mounted position department can extrude first locking piece 71, make the circuit breaker can be inserted the mounted position, first locking piece 71 elasticity stretches out in the lock shell in the mounted position after the circuit breaker inserts the mounted position, in order to restrict the circuit breaker and drop.

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

Claims

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

a base body (1);

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

an unlocking piece (72) movably connected to the base body (1) along a first moving direction, wherein the unlocking piece (72) is configured to drive the first locking piece (71) to retract into the base body (1) to unlock the circuit breaker when moving; the first moving direction and the second moving direction are arranged to form a first preset angle, and the first preset angle is larger than zero degree;

a second lock member (73) rotatably provided to the base (1) and having a lock position restricting the movement of the unlocking member (72) and an unlock position allowing the movement of the unlocking member (72); the second locking piece (73) is linked with the switching-on/off mechanism (4), the second locking piece (73) is located at the locking position when the switching-on/off mechanism (4) is switched on, and the second locking piece (73) is located at the unlocking position when the switching-on/off mechanism (4) is switched off.

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

3. The locking mechanism of a circuit breaker according to claim 2, wherein said driving portion (723) is provided with a first inclined surface (7231), said first locking member (71) comprises a first locking body (711) and a first protrusion (712), said first locking body (711) is protrudably provided to said base (1), said first protrusion (712) is provided to said first locking body (711), and said first protrusion (712) is engaged with said first inclined surface (7231).

4. The latching mechanism of circuit breaker according to claim 3, characterized in that said second direction of movement is perpendicular to said first ramp (7231).

5. The circuit breaker latch mechanism of claim 2, further comprising:

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 cause the first locking member (71) to protrude out of the base body (1);

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

6. The latching mechanism of circuit breaker according to claim 2, wherein the unlocking member (72) is provided with a first stopper groove (7222) and a second stopper groove (7223), the first stopper groove (7222) and the second stopper groove (7223) being connected, the first stopper groove (7222) extending in the first moving direction, the second stopper groove (7223) extending in a third moving direction, the third moving direction being set at a second predetermined angle from the first moving direction, the second predetermined angle being greater than zero degrees;

the second lock member (73) includes a second lock body (731) and a second protrusion (732), the second protrusion (732) is provided on the second lock body (731), the second protrusion (732) is fitted to the first stopper groove (7222) when the second lock member (73) is in the unlock position, and the second protrusion (732) is fitted to the second stopper groove (7223) when the second lock member (73) is in the lock position.

7. The latching mechanism of claim 6, wherein said second latch member (73) further comprises an extension (734), said extension (734) being connected to said second latch body (731), said extension (734) extending out of said base (1) to latch said circuit breaker when said second latch member (73) is in said latched position, said extension (734) retracting into said base (1) to unlatch said circuit breaker when said second latch member (73) is in said unlatched position.

8. The circuit breaker latching mechanism according to claim 2, wherein the base (1) is formed with a first blocking face (16) and a second blocking face (17), the first blocking face (16) and the second blocking face (17) being disposed opposite to each other along the first moving direction, the connecting portion (722) is formed with a projection (7224), and the projection (7224) is disposed between the first blocking face (16) and the second blocking face (17).

9. A circuit breaker, comprising:

the locking mechanism (7) of a circuit breaker according to any of claims 1-8, the unlocking piece (72) of the locking mechanism (7) of the circuit breaker being movable to drive the first locking piece (71) to unlock the circuit breaker, the second locking piece (73) of the locking mechanism (7) of the circuit breaker having a locked position to limit the movement of the unlocking piece (72) and an unlocked position to allow the movement of the unlocking piece (72);

and the switching-on and switching-off 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 in the locking position when the switching-on and switching-off mechanism (4) is switched on, and the second locking piece (73) is in the unlocking position when the switching-on and switching-off mechanism (4) is switched off.

10. The circuit breaker of claim 9 wherein the second latch (73) includes a second latch body (731) and a third protrusion (733), the third protrusion (733) being disposed on the second latch body (731);

divide closing mechanism (4) including separating brake spare (62) and closing brake spare (61), separating brake spare (62) with closing brake spare (61) sets up relatively the both sides of third convex part (733), separating brake spare (62) are equipped with second inclined plane (622), closing brake spare (61) are equipped with third inclined plane (612), when dividing closing mechanism (4) is closed second inclined plane (622) with third convex part (733) cooperation is so that second locking piece (73) is in latched position, when dividing closing mechanism (4) is opened third inclined plane (612) with third convex part (733) cooperation is so that second locking piece (73) is in unlatched position.