CN219163293U - Locking mechanism of circuit breaker and circuit breaker - Google Patents

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

Background technique

With the development of technology, the type and quantity of electrical equipment have increased, and electrical equipment has gradually become smaller and more intelligent. The traditional power supply method of connecting multiple sockets with one terminal circuit breaker is difficult to meet the needs of equipment power supply and equipment protection. In order to meet the power supply requirements of different electrical equipment, plug-in circuit breakers are widely used. Plug-in circuit breakers can be inserted into the installation position like a plug to realize quick and convenient connection to the circuit, and can also be pulled out from the installation position like a plug. Allows quick and easy removal from the circuit.

On the basis of easy plugging and unplugging, the safety requirements and stability requirements of the circuit breaker cannot be ignored. When plugging and unplugging the circuit breaker in the closed state, or the circuit breaker accidentally falls out of the installation position, etc., the safety and power supply of electrical equipment will be affected. Both the stability and the personal safety of the user have adverse effects, so how to prevent the circuit breaker from being pulled out in the closed state and how to prevent the circuit breaker from accidentally falling out of the installation position is one of the keys to improve the safety and stability of the circuit breaker.

Utility model content

The present application aims to provide a locking mechanism of a circuit breaker and the circuit breaker, so as to improve the safety and stability of the circuit breaker.

The embodiment of the application is realized like this:

In the first aspect, an embodiment of the present application provides a locking mechanism of a circuit breaker, the circuit breaker includes an opening and closing mechanism, and the locking mechanism of the circuit breaker includes: a base; a first locking member that moves along the second The direction is movably arranged on the base body, and can protrude from the base body to lock the circuit breaker; the unlocking part is movably connected to the base body along the first moving direction, and the unlocking part is configured to move When driving the first locking member to retract into the base to unlock the circuit breaker; the first moving direction and the second moving direction are set at a first preset angle, and the first preset angle is greater than zero degree; the second locking part is rotatably arranged on the base body and has a locking position that restricts the movement of the unlocking part and an unlocking position that allows the movement of the unlocking part; the second locking part is connected with the opening and closing When the opening and closing mechanism is closed, the second locking member is in the locking position, and when the opening and closing mechanism is opening, the second locking member is in the unlocking position.

The locking mechanism of the circuit breaker provided by this application is provided with a first locking piece and an unlocking piece, and a second locking piece linked with the opening and closing mechanism. With the cooperation of the first locking piece and the unlocking piece, the second A locking piece can protrude and retract into the base body, so that the circuit breaker can be locked and unlocked by the first locking piece when it is inserted into the installation position, so as to prevent the circuit breaker from accidentally falling out of the installation position and improve the stability of the circuit breaker; at the same time By setting the second locking part to cooperate with the unlocking part, the second locking part is linked with the opening and closing mechanism of the circuit breaker, allowing the unlocking part to move when the switch is opened, so that the first locking part can be retracted into the base body to unlock, which is convenient for circuit breaker The circuit breaker is plugged into the installation position or pulled out from the installation position. When the switch is closed, the movement of the unlocking part is restricted so that the first locking part can keep protruding from the base. Under the restriction of the first locking part, the circuit breaker cannot be moved from the installation position. Pull out to prevent the circuit breaker from being pulled out in the closed state, improving the safety and stability of the circuit breaker.

In addition, in the above technical solution, the unlocking member and the first locking member are interlocked with each other and move in different directions, and the second locking member restricts the first locking member from moving in the second moving direction by restricting the unlocking member from moving in the first moving direction. When the first locking piece and the second locking piece are locked, the whole body composed of the unlocking piece, the first locking piece and the second locking piece bears force. When the circuit breaker is pulled by force, the pulling force The connection node between the unlocking piece and the second locking piece, the connecting node between the first locking piece and the unlocking piece are dispersed and transmitted to various parts in different directions, improving the ability of the circuit breaker to resist brute force pulling, making the circuit breaker safe Improved performance and stability.

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

In the above technical solution, when the second locking piece is in the unlocked position, when the person grasps the gripping part of the unlocking piece with his hand and pulls the unlocking piece outward along the first moving direction, the driving part can drive the first locking piece to retract and open the circuit. Therefore, the circuit breaker can be unlocked and pulled out by pulling the unlocking part, and the operation is more convenient.

In some embodiments of the present application, the driving part is provided with a first slope, the first locking member includes a first locking body and a first protrusion, and the first locking body is protrudingly arranged. On the base body, the first protrusion is connected to the first locking body, and the first protrusion cooperates with the first slope.

In the above technical solution, the unlocking part and the first locking part form an oblique fit, on the one hand, the driving fit between the unlocking part and the first locking part can be effectively realized; on the other hand, the unlocking part and the first locking part are not directly connected, when one of them is driven by brute force, the other is not easily damaged; moreover, it is also convenient to produce and install the unlocking part and the first locking part separately, reducing the difficulty of production and installation.

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

In the above technical solution, by setting the second moving direction to be perpendicular to the first inclined surface, the force between the first inclined surface and the first locking member is mainly along the second moving direction, and the force components in other directions are reduced. It is beneficial to realize the retraction of the first locking member into the base body through a small 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 body and the first locking member, the first elastic support member has The first locking member has a tendency to protrude from the base body; the second elastic support member is arranged between the base body and the unlocking member, and the second elastic support member has the function of making the unlocking member return to its original state. The tendency of the position is such that the first locking member can protrude from the base body.

In the above technical solution, when there is no external force, under the action of the first elastic support member and the second elastic support member, the first locking member keeps protruding from the base body, and when the circuit breaker is plugged into the installation position, it can ensure locking and breaking to prevent the circuit breaker from accidentally falling out.

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, and the first limiting groove The slot extends along the first moving direction, the second limiting slot extends along a third moving direction, the third moving direction is set at a second preset angle with the first moving direction, and the second preset angle The angle is set to be greater than zero; the second locking member includes a second locking body and a second protrusion, the second protrusion is arranged on the second locking body, and the second locking member is on the When the unlocked position, the second protrusion fits into the first limiting slot, and when the second locking member is at the locking position, the second protrusion fits into the second limiting slot.

In the above technical solution, by setting the second convex part, the first limiting groove extending along the first moving direction and the second limiting groove extending along the third moving direction, the second convex part fits into the second limiting groove At this time, the two side walls of the second limiting groove are in contact with the two sides of the second convex part in the first moving direction, and the movement of the unlocking part in the first moving direction is restricted, so that the first locking part remains stretched out to lock 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. When the second convex part is matched with the first limiting groove, the second convex part can move along the first The limit groove moves, so that the unlocking part can move relative to the second locking part along the first moving direction, so as to unlock the first locking part. In addition, correspondingly, after the unlocking member moves, the two side walls of the first limiting groove can be in contact with both sides of the second protrusion in the third moving direction, so as to limit the movement of the second protrusion along the third moving direction, and then The opening and closing mechanism linked with the second convex part is restricted from being switched from the opening state to the closing state, so as to prevent safety risks caused by accidental closing during the plugging and unplugging process of the circuit breaker.

In some embodiments of the present application, the second locking member further includes an extension, the extension is connected to the second locking body, and when the second locking member is in the locking position, the The extension part extends out of the base body to lock the circuit breaker, and when the second locking member is in the unlocking position, the extension part retracts into the base body to unlock the circuit breaker.

In the above technical solution, by setting the extension part on the second locking part, when the second locking part is in the locked position, not only can the unlocking part be locked, but the extension part of the second locking part can also be locked together with the first locking part. The circuit breaker can improve the ability to resist brute force plugging and unplugging, and further prevent plugging and unplugging of the circuit breaker in the closed 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 arranged along the first moving direction, and the connecting The 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 the one hand, the first blocking surface, the second blocking surface and the protrusion cooperate to limit the movement stroke of the unlocking member; on the other hand, when the unlocking member is pulled, the protrusion acts on the first blocking surface or the second blocking surface. The second blocking surface transmits the force of pulling out to the base body.

In the second aspect, the embodiment of the present application also provides a circuit breaker, which includes: the locking mechanism of the circuit breaker according to any one of the first aspect, the unlocking member of the locking mechanism of the circuit breaker can move To drive the first locking member to unlock the circuit breaker, the second locking member of the locking mechanism of the circuit breaker restricts the locking position of the unlocking member from moving and the unlocking position allows the unlocking member to move; a closing mechanism for driving the second locking member to move between the locking position and the unlocking position, and the second locking member is in the locking position when the opening and closing mechanism is closed, The second locking member is in the unlocked position when the opening and closing mechanism is opened.

In the above technical solution, the circuit breaker is locked at the installation position when the first locking member is stretched out, preventing the circuit breaker from accidentally coming out of the installation position, and by moving the unlocking member, the first locking member can be retracted into the base body, and the circuit breaker can Insert it into the installation position or pull it out from the installation position, and at the same time, the opening and closing mechanism drives the second locking part to limit the movement of the unlocking part when closing, so that the first locking part can be kept extended, which can prevent the circuit breaker from closing. Pull out in the closed state to ensure the stability of the circuit where the circuit breaker is located, and prevent safety risks caused by the pull-out operation in the closed state, so as to improve the stability and safety of the circuit breaker.

In some embodiments of the present application, the second locking member includes a second locking body and a third protrusion, and the third protrusion is disposed on the second locking body; the opening and closing mechanism It includes an opening part and a closing part, the opening part and the closing part are arranged on both sides of the third convex part oppositely, the opening part is provided with a second slope, and the closing part is provided with The third inclined surface, when the opening and closing mechanism is closed, the second inclined surface cooperates with the third protrusion so that the second locking member is in the locking position, and when the opening and closing mechanism is opened, The third inclined surface cooperates with the third protrusion to make the second locking member be in the unlocking position.

In the above technical solution, the second locking part is provided with a third protrusion, and the opening and closing mechanism includes an opening part and a closing part respectively arranged on both sides of the third protrusion. The parts move relatively. During the opening process, the opening part and the closing part respectively move back in reverse. The opening part is provided with a second slope, and the closing part is provided with a third slope. Partially cooperate to drive the second locking part to move, that is, the third inclined surface breaks away from the third convex part when closing, and the opening part drives the third convex part through the second inclined surface to make the second locking part reach the locked position, and the opening When the second slope is separated from the third protrusion, the closing member drives the third protrusion through the third slope so that the second locking member reaches the unlocking position. Through the cooperation of the opening part with the second slope, the closing part with the third slope and the third protrusion, it is ensured that the second locking part can be limited to the locked position or the unlocked position, preventing the second locking part from closing Displacement in the state causes the unlocking part to be unlocked accidentally, so as not to affect the stability and safety of the circuit breaker, and also prevents the movement of the unlocking part from being restricted due to the displacement of the second locking part in the open state, so as not to affect the insertion and removal of the circuit breaker.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings that are required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic diagram of the on-state of the circuit breaker provided by an embodiment of the present application;

Fig. 2 is a schematic diagram of an off state of a circuit breaker provided by an embodiment of the present application;

Fig. 3 is a schematic diagram of an opening and closing mechanism provided by an embodiment of the present application;

Fig. 4 is a schematic diagram of the opening and closing mechanism in the opening state provided by an embodiment of the present application;

Figure 5 is a partially enlarged view of Figure 4;

Fig. 6 is a schematic diagram of the second transmission member in the opening state provided by an embodiment of the present application;

Figure 7 is a partially enlarged view of Figure 6;

Fig. 8 is a schematic diagram of the closing process of the opening and closing mechanism provided by an embodiment of the present application;

Figure 9 is a partially enlarged view of Figure 8;

Fig. 10 is a schematic diagram of the opening and closing mechanism in the closing state provided by an embodiment of the present application;

Figure 11 is a partially enlarged view of Figure 10;

Fig. 12 is a schematic diagram of the opening process of the opening and closing mechanism provided by an embodiment of the present application;

Figure 13 is a partially enlarged view of Figure 12;

Fig. 14 is a schematic diagram of both the first locking part and the second locking part of the locking mechanism of the circuit breaker provided by an embodiment of the present application;

Fig. 15 is a schematic diagram of locking of the first locking member and unlocking of the second locking member of the locking mechanism of the circuit breaker provided by an embodiment of the present application;

Fig. 16 is a schematic diagram of unlocking both the first locking part and the second locking part of the locking mechanism of the circuit breaker provided by an embodiment of the present application;

Fig. 17 is a schematic diagram of the second locking member in the unlocked position provided by an embodiment of the present application;

Fig. 18 is a schematic diagram of the second locking member in the locking position provided by an embodiment of the present application;

Fig. 19 is a schematic diagram of a first viewing angle of the unlocking member provided by an embodiment of the present application;

Fig. 20 is a schematic diagram of a second perspective of the unlocking member provided by an embodiment of the present application;

Fig. 21 is a schematic diagram of the part of the substrate used for installing the locking mechanism provided by an embodiment of the present application;

Fig. 22 is a schematic diagram of a first locking member provided by an embodiment of the present application;

Fig. 23 is a schematic diagram of a second locking member provided by an embodiment of the present application;

Fig. 24 is a schematic diagram of the opening member provided by an embodiment of the present application;

Fig. 25 is a schematic diagram of a closing member provided by an embodiment of the present application;

Icons: 1-base body, 13-location key, 14-first mounting hole, 15-second mounting hole, 16-first blocking surface, 17-second blocking surface, 18-first guiding surface, 2-static contact Head, 3-moving contact, 31-second rotating shaft, 32-second protrusion, 4-opening and closing mechanism, 41-first transmission part, 4113-notch, 4122-chute, 42-second transmission part , 4211-the third protrusion, 4212-the first protrusion, 422-shift block, 423-the second elastic reset member, 44-the first limiter, 45-the lever, 46-the first connecting piece, 47- The second connecting piece, 48-the third connecting piece, 49-the first rotating shaft, 5-the electric mechanism, 61-closing part, 611-the first groove, 612-the third inclined plane, 62-opening part, 621- Second groove, 622-second slope, 7-locking mechanism, 71-first locking member, 711-first locking body, 7111-first part, 71111-third blocking surface, 71112-second guide Surface, 7112-second part, 71121-fourth slope, 712-first convex part, 713-guide rod, 72-unlocking part, 721-holding part, 722-connecting part, 7221-bar groove, 7222- The first limiting groove, 7223-the second limiting groove, 7224-the bump, 7225-the positioning hole, 723-the driving part, 7231-the first slope, 73-the second locking member, 731-the second locking body , 732-the second convex part, 733-the third convex part, 734-the extension part, 74-the first elastic support part, 75-the second elastic support part, 8-the flexible connecting part.

Detailed ways

In order to make the purposes, 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 in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" " and other indications are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the application product is used, and are only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description, and should not be understood as indicating or implying relative importance.

In addition, terms such as "horizontal" and "vertical" in the description of the present application do not mean that the components are required to be absolutely horizontal or hang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be explained that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Two states. Circuit breakers include moving contacts and static contacts. When the moving contact and the static contact are connected, the circuit breaker is connected. When the moving contact and the static contact are separated, the circuit breaker is disconnected.

As shown in Figure 1 and Figure 2, the embodiment of the present application provides a circuit breaker, the circuit breaker includes a housing (not shown in the figure), a base 1, a moving contact 3, a static contact 2, an opening and closing mechanism 4, Electric mechanism 5 and locking mechanism 7.

The base 1 is used to install the functional parts of the circuit breaker such as the moving contact 3, the static contact 2, the opening and closing mechanism 4, the electric mechanism 5 and the locking mechanism 7, and the outer shell is set around the base 1 for isolation and protection. effect. It should be noted that the housing does not have to be a completely closed structure, but is provided with openings or wire holes according to functions for the internal functional components to be connected to external circuits. In some embodiments, the housing independently forms an inner space, and the base 1 is disposed within the inner space of the housing. In some other embodiments, the base body 1 and the outer shell jointly define an inner space.

For ease of observation, the housing is hidden in the drawings provided in the embodiments of the present application.

The static contact 2 is fixedly arranged on the base 1, and the movable contact 3 is movably arranged on the base 1, so that the movable contact 3 and the static contact 2 can be connected or separated. When connected, the circuit where it is located is connected, and the circuit breaker disconnects the circuit where it is located when the moving contact 3 is separated from the static 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 separates the moving contact 3 from the static contact 2 in the opening state, and the opening and closing mechanism 4 connects the moving contact 3 in the closing state. Static contact 2.

The electric mechanism 5 is used to switch the opening and closing mechanism 4 between the opening state and the closing state when energized, so as to realize automatic control on and off of the circuit breaker, and the circuit breaker is powered off and returns to the initial state after switching. Electric mechanism 5 can adopt electric cylinder, electromagnetic mechanism etc.

The locking mechanism 7 is used to lock the circuit breaker at the installation position. The locking mechanism 7 is linked with the opening and closing mechanism 4, and the circuit breaker is locked at the installation position when the opening and closing mechanism 4 is closed. When switching, the circuit breaker is allowed to be pulled out under the condition of external force, so as to avoid the accidental disengagement of the circuit breaker in the closed state, and prevent the circuit breaker from being plugged in and out in the closed state.

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

The opening and closing mechanism 4 includes a first transmission member 41 and a second transmission member 42 , as well as an opening member 62 and a closing 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 connecting member 46 .

Both the first transmission member 41 and the second transmission member 42 are rotatably connected to the base body 1 through a first rotating shaft 49 . Therefore, both the first transmission member 41 and the second transmission member 42 can rotate around the first rotating shaft 49 in the first clockwise direction and the second clockwise direction, the first clockwise direction and the second clockwise direction are opposite, for example, the first clockwise direction The first direction is clockwise, and the second clockwise direction is counterclockwise.

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

The closing part 61 and the opening part 62 are respectively movably arranged on the base body 1. One end of the closing part 61 and one end of the opening part 62 are both arranged in the base body 1 and cooperate with the first transmission part 41. The closing part 61 The other end of the opening and the other end of the opening part 62 extend out of the base body 1 for manual pressing.

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

The opening part 62, the closing part 61 and the first transmission part 41 are linked together. When the first transmission part 41 rotates, one of the opening part 62 and the closing part 61 moves toward the base 1, and the other moves toward the base. 1 move outside.

As shown in FIG. 4 and FIG. 5 , in the opening 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 body 1 for manual pressing. Press the other end of the closing member 61 to move the closing member 61 toward the base 1, and drive the first transmission member 41 to rotate from the first initial position to the closing position along the first clockwise direction through the second connecting member 47, so that the opening The closing mechanism 4 switches to the closing state, the moving contact 3 is connected to the static contact 2, and at the same time, the first transmission member 41 drives the opening member 62 to move toward the outside of the base body 1 through the third connecting member 48, so that the opening of the opening member 62 The other end protrudes from the base body 1 .

As shown in FIG. 10 and FIG. 11 , in the closing state, the first transmission member 41 is in the closing position, and the other end of the opening member 62 protrudes from the base 1 for manual pressing. When it is necessary to switch to the opening state, press the other end of the opening member 62 to move the opening member 62 toward the base 1, and drive the first transmission member 41 through the third connecting member 48 to rotate from the closing position in the second clockwise direction. Return to the first initial position, so that the opening and closing mechanism 4 is switched to the opening state, the movable contact 3 is separated from the static contact 2, and the first transmission member 41 drives the closing member 61 towards the outside of the base 1 through the second connecting member 47 Move so that the other end of the closing member 61 protrudes from the base 1 .

Therefore, through the closing member 61 and the opening member 62, the circuit breaker provided in the embodiment of the present application can realize manual control of switching on and off of the circuit breaker.

The first transmission member 41 cooperates with the second transmission member 42 in one-way transmission. Exemplarily, as shown in FIG. 1 and FIG. 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 fits into the notch 4113 Inside, the third protrusion 4211 can move in the notch 4113 . Therefore, the first transmission member 41 moves to the closing position, so that when the movable contact 3 is connected to the static contact 2, the side wall of the gap is in contact with the third protrusion, and the third protrusion 4211 drives the second transmission member 42 to move to centre 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 clockwise direction relative to the first transmission member 41 .

As mentioned above, the first transmission member 41 has a first initial position and a closing position, then the second transmission member 42 has a second initial position and an intermediate position, and when the first transmission member 41 moves from the first initial position to the closing position , driving the second transmission member 42 to move from the second initial position to the middle position. The second transmission member 42 also has an opening position, and when the second transmission member 42 continues to move in the first clockwise direction relative to the first transmission member 41 , it can reach the opening position.

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 protrudes along the 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 middle 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 static contact 2 .

The opening and closing mechanism 4 also includes a first elastic reset member (not shown in the figure), the first elastic reset member is connected with the second transmission member 42, and the first elastic reset member has the function of making the second transmission member 42 move along the second clockwise direction. The tendency to reset to the second initial position. The first elastic reset member is configured to accumulate elastic force in the closed state, and release the elastic force to drive the second transmission member 42 to reset after the movable contact 3 is detached from the static contact 2 .

That is to say, after the second transmission member 42 pushes the movable contact 3 away from the static contact 2, it will turn back to the second initial position in the second clockwise direction under the action of the first elastic return member, and then the third protrusion will Under the cooperation of 4211 and the side wall of the notch, the first transmission member 41 is driven back to the first initial position to complete the opening.

Therefore, the opening and closing mechanism can be closed by moving the first transmission member 41 through the electric mechanism 5, so that the moving contact 3 is connected to the static contact 2, and the closing member 61 moves toward the base 1, and the opening member 62 faces The base body 1 moves outside; the second transmission member 42 can be moved by the electric mechanism 5 to open the opening and closing mechanism, so that the moving contact 3 is separated from the static contact 2, and the closing part 61 moves toward the outside of the base body 1, and the opening and closing mechanism is opened. The member 62 moves towards the inside of the base body 1 .

As shown in FIGS. 14-23 , the locking mechanism 7 includes a first locking member 71 , a second locking member 73 and an unlocking member 72 .

The locking mechanism 7 is arranged in the casing, and the casing is provided with a through hole (not shown in the figure), and the through hole is used to allow the first locking member 71 to protrude, so as to lock the circuit breaker.

As shown in FIG. 15 and FIG. 16 , the first locking member 71 is movably disposed on the base 1 along the second moving direction, and the first locking member 71 can lock the circuit breaker at the installation position when extending out of the base 1 . It should be noted that "extruding from the base 1" described in the specification of this application means that the projection of the component on the base 1 exceeds the edge of the base 1, such as the first locking member 71 protruding out of the base 1, which means that the first A part of the locking member 71 is projected beyond the edge of the base body 1 , so that the protruding part protrudes from the housing through the hole.

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

The second locking member 73 cooperates with the unlocking member 72, and the second locking member 73 is movably arranged on the base 1, as shown in Figure 17 and Figure 18, the second locking member 73 has a locked position and an unlocked position, the second The locking part 73 restricts the movement of the unlocking part 72 when it is in the locked position, and the second locking part 73 allows the movement of the unlocking part 72 when it is in the unlocking position.

At the same time, the second locking member 73 is linked with the opening and closing mechanism 4, and the second locking member 73 is in the locked position when the opening and closing mechanism 4 is closed. in the unlocked position.

By setting the locking mechanism 7 in the circuit breaker, the second locking member 73 is in the locking position when the switch is closed, so that the unlocking member 72 cannot move, so the unlocking member 72 cannot drive the first locking member 71 to retract into the base 1, Under the restriction of the first locking member 71, the circuit breaker cannot be pulled out from the installation position, so as to prevent the circuit breaker from being pulled out in the closed state and improve the safety and stability of the circuit breaker.

By setting the locking mechanism 7 in the circuit breaker, the second locking member 73 is in the unlocked position when the brake is opened to allow the unlocking member 72 to move; when the unlocking member 72 does not move, the circuit breaker is under the action of the first locking member 71 It can be limited to the installation position to prevent the circuit breaker from accidentally coming out of the installation position and improve the stability of the circuit breaker; when the unlocking member 72 moves, the first locking member 71 is retracted into the base 1 to unlock the circuit breaker, which is convenient for inserting the circuit breaker into the circuit breaker. Connect to the installation location or pull it out from the installation location.

The unlocking member 72 is movably connected to the base body 1 along the first moving direction X, the first locking member 71 is protrudingly provided on the base body 1 along the second moving direction Y, and the second locking member 73 restricts the unlocking member 72 from moving along the second moving direction Y. Movement in a moving direction X prevents the unlocking member 72 from driving the first locking member 71 to move in a second moving direction Y. The first moving direction X and the second moving direction Y are set at a first preset angle, and the first preset angle is greater than zero degrees. In some embodiments, the first preset angle may be 90°.

As shown in Figures 19 and 20, the unlocking member 72 includes a holding portion 721, a connecting portion 722 and a driving portion 723, the connecting portion 722 is movably connected to the base 1, and the holding portion 721 protrudes from the base 1 for people to hold Pulling by hand, the driving part 723 is used to drive the first locking member 71 to retract.

One of the base body 1 and the connecting part 722 is provided with a bar-shaped groove 7221 extending along 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 position of the unlocking member 72. direction of movement.

Exemplarily, as shown in FIG. 21 , the positioning key 13 is disposed on the base body 1 , and as shown in FIG. 19 , the bar-shaped groove 7221 is disposed on the connecting portion 722 . Pull the unlocking member 72 along the first moving direction X. On the one hand, the driving member drives the first locking member 71 to retract into the base 1 to unlock. Pull out the force to the base 1, so that the circuit breaker can be pulled out as a whole while unlocking.

As shown in Figure 16, the base body 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 arranged oppositely, the connecting portion 722 is formed with a bump 7224, and the bump 7224 is set Between the first blocking surface 16 and the second blocking surface 17 .

The first blocking surface 16 cooperates with the projection 7224 to restrict the unlocking member 72 from moving toward the outside of the base 1 , and the second blocking surface 17 cooperates with the projection 7224 to restrict the unlocking member 72 from moving toward the inside of the base 1 .

On the one hand, the first blocking surface 16 , the second blocking surface 17 and the protrusion 7224 cooperate to define the movement stroke of the unlocking member 72 . On the other hand, when the unlocking member 72 is pulled out, the protrusion 7224 acts on the first blocking surface 16 to transmit the force of pulling out to the base 1, that is to say, in the process of pulling out the circuit breaker, the first blocking surface 16 and the positioning key 13 jointly share the force, which can reduce the force on the positioning key 13, so as to avoid damage to the positioning key 13.

As shown in FIG. 22 , the first locking member 71 includes a first locking body 711 and a first protrusion 712 , the first locking body 711 is extendably disposed on the base 1 , and the first protrusion 712 is connected to the first Lock the body 711 .

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

When the unlocking member 72 moves, the first slope 7231 and the first protrusion 712 move relatively. As shown in FIG. 15 and FIG. 16 , when the unlocking member 72 moves out of the base 1 along the first moving direction X, the first protrusion 712 moves along the first slope 7231 , so that the first locking body 711 retracts into the base 1 . When the unlocking member 72 moves into the base 1 along the first moving direction X, the first protrusion 712 moves in the opposite direction along the first slope 7231 , so that the first locking body 711 protrudes out of the base 1 .

In some embodiments, the locking mechanism 7 further includes a first elastic support member 74, the first elastic support member 74 is arranged between the base body 1 and the first locking member 71, the first elastic support member 74 has the function of making the first lock The tendency of the stopper 71 to protrude from the base body 1.

As shown in FIG. 15 , FIG. 16 and FIG. 21 , the base body 1 is provided with a first mounting hole 14 extending along the second moving direction Y. The first locking member 71 also 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 installation hole 14, and the first elastic support member 74 is sleeved on the One end of the first elastic supporting member 74 of the guide rod 713 is abutted against the surface of the first locking body 711 , and the other end is abutted against the bottom of the first installation hole 14 . When the unlocking part 72 moves out of the base body 1 , the first locking part 71 is driven into the base body 1 and the first elastic supporting part 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 out of the base 1 .

It should be noted that, in the drawings of the embodiments 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 can form other angles with the first moving direction X Setting, such as: the second moving direction Y shifts to the right by a certain angle, that is, the opening end of the first mounting hole 14 shifts to the right, the first mounting hole 14 extends from the upper right to the lower left, and the guide rod of the first locking member 71 713 is adapted to the first mounting hole 14 , and when the first locking member 71 moves along the second moving direction Y, it moves upward and extends toward the right, or moves toward the lower left and retracts. By setting the second moving direction Y to be offset to the right, so that the second moving direction Y tends to be perpendicular to the first slope 7231, the force between the first slope 7231 and the first locking member 71 mainly moves along the second direction Y. In the direction Y, the force components in other directions are reduced, which is beneficial to drive the first locking member 71 into the base body 1 with a smaller force.

In some embodiments, as shown in Fig. 15, Fig. 16 and Fig. 21, the locking mechanism 7 further includes a second elastic support 75, the second elastic support 75 is arranged between the base 1 and the unlocking member 72, the second The elastic supporting member 75 has a tendency to return the unlocking member 72 to the initial position, so as to allow the first locking member 71 to protrude from the base 1 .

The base body 1 is provided with a second mounting hole 15 extending along the first moving direction X. As shown in FIG. 19 , the unlocking member 72 is provided with a positioning hole 7225 , and the opening of the positioning hole 7225 is opposite to the opening of the second mounting hole 15 . One end of the second elastic support 75 is located in the second installation hole 15 and is against the bottom of the second installation hole 15 , and the other end of the second elastic support 75 is located in the positioning hole 7225 and is against the bottom of the positioning hole 7225 . The positioning hole 7225 and the first blocking surface 16 are respectively located on both sides of the positioning key 13. When the unlocking member 72 is pulled out, the bottom surface of the positioning hole 7225 bears the pressure transmitted by the second elastic support member 75, so that the positioning hole 7225 The bottom surface and the first blocking surface 16 share the force on both sides of the positioning key 13 to further reduce the force on the positioning key 13 to prevent the positioning key 13 from being damaged.

As shown in Figure 22, the first locking body 711 includes a first part 7111 and a second part 7112, the first part 7111 is formed with a third blocking surface 71111, the third blocking surface 71111 is opposite to the lock opening, the second part 7112 is connected to the first The third blocking surface 71111, the second part 7112 can extend out of the locking opening, and the third blocking surface 71111 is against the inner wall of the casing to restrict the first locking body 711 from coming out.

The base body 1 is formed with a first guide surface 18 , which is perpendicular to the plane where the locking notch is located. The first guide surface 18 is in contact with the first part 7111 to guide the second part 7112 to move out or retract. As shown in FIG. 22 , the first part 7111 is provided with a second guide surface 71112 , and the second guide surface 71112 is attached to the first guide surface 18 .

The second locking member 73 is configured to limit the movement of the unlocking member 72 to the outside of 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 , and the second protrusion 732 is connected to the second locking body 731 .

As shown in Figure 20, the unlocking member 72 is provided with a first limiting groove 7222 and a second limiting groove 7223, the first limiting groove 7222 and the second limiting groove 7223 are connected, and the first limiting groove 7222 moves along the first The direction X extends, the second limiting groove 7223 extends along the third moving direction Z, the third moving direction Z and the second moving direction Y are set at a second preset angle, and the second preset angle is larger than zero. In some embodiments, the second preset angle is 90°.

As shown in Figure 15, Figure 16, Figure 17, and Figure 20, when the second locking member 73 is in the unlocked position, the second protrusion 732 fits into the first limiting groove 7222; when the second locking member 73 is in the locked position , the second protrusion 732 fits into the second limiting groove 7223 .

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

As shown in FIG. 18 , the second locking body 731 is in a locking position when it is rotated close to the locking opening. As shown in FIG. 17 , the second locking body 731 is in an unlocked position when it rotates away from the locking opening.

When the second locking member 73 is in the locked position, the second protrusion 732 is located at the end of the second limiting groove 7223 away from the first limiting groove 7222, and the two side walls of the second limiting groove 7223 are in contact with the second protrusion. 732 is on both sides of the first moving direction X, restricting the unlocking member 72 from moving along the first moving direction X, so that the first locking member 71 remains extended to lock the circuit breaker.

When the second locking member 73 is in the unlocked position, the second protrusion 732 is located at the end where the second limiting groove 7223 is connected to the first limiting groove 7222, and the second protrusion 732 can move along the first moving direction X within the first limit. The position slot 7222 moves, so that the unlocking member 72 can move along the first moving direction X, so as 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. When the unlocking member 72 moves, the second protrusion 732 can be opened from the end of the first limiting groove 7222 move out. When the end of the first limiting groove 7222 away from the second limiting groove 7223 is opened, the length of the first limiting groove 7222 does not limit the moving distance of the unlocking member 72, the first limiting groove 7222 can be set shorter, and the connecting portion 722 The material can be reduced, and the cost and weight of the circuit breaker can be reduced. Optionally, the width of the first limiting groove 7222 gradually increases from the end connected to the second limiting groove 7223 to the end away from the second limiting groove 7223, so that the second protrusion 732 moves out and returns to the first limiting groove. Bit slot 7222.

As before, the opening and closing mechanism 4 realizes locking and unlocking of the circuit breaker through linkage with the second locking member 73 . The second locking member 73 is in the locked 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.

There are many ways of linkage between the second locking member 73 and the opening and closing mechanism 4 .

For example, the second locking member 73 may be directly connected with the opening and closing mechanism 4 to realize linkage. In some embodiments, the second locking member 73 may be connected to the first transmission member 41. When 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 engaged position. In the gate position, 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, when 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 middle position, the second locking member 73 is in the locking position.

As 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 when it is in the switching state, so as to The second locking member 73 is moved.

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 toggled when the opening and closing mechanism 4 switches states. The second locking member 73 can cooperate with at least one of the opening member 62 or the closing member 61, so that the second locking member 73 can move 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 the second locking body. The opposite side of the 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 closing, so that the second locking member 73 is in a locked position. Optionally, the opening member 62 is provided with a second groove 621 , and the sidewall of the second groove 621 is inclined to form a second slope 622 .

The third convex part 733 is located between the second slope 622 and the lock. When the closing part 61 is pressed to close, the opening part 62 is driven by the first transmission part 41 to move toward the outside of the base 1, and the second slope 622 pushes the third part. The protrusion 733 further pushes the second locking body 731 to rotate upward to the locked position. In the closed state, the end of the second inclined surface 622 close to the lock is blocked on one side of the third protrusion 733 to limit the second locking member 73 to the locked position, and the second protrusion 732 is located in the second limiting groove 7223 One end away from the first limiting groove 7222, thereby locking the unlocking member 72, so that the unlocking member 72 cannot drive the first locking member 71 to retract in the closed state, so that the first locking member 71 keeps locking the circuit breaker to prevent circuit breaker The device is pulled out in the closing state, protecting the safety of the equipment and the personal safety of the operator.

Optionally, as shown in FIG. 17 and FIG. 18 , the second locking member 73 further includes an extension portion 734 , and the extension portion 734 is connected to the second locking body 731 . When the second locking member 73 is in the locked position, the extension portion 734 extends out of the base 1 ; when the second locking member 73 is in the unlocked position, the extension 734 retracts into the base 1 . Under the cooperation of the third convex part 733 and the opening part 62 , the second locking part 73 is limited to the locking position, not only the unlocking part 72 can be locked by the second convex part 732 , but also the circuit breaker can be locked by the extension part 734 . In the closed state, the first locking piece 71 and the second locking piece 73 jointly lock the circuit breaker, which can improve the ability to resist brute force insertion and extraction, and can prevent the first locking piece 71 from accidentally retracting and causing the circuit breaker to accidentally Unlocking further prevents plugging and unplugging of the circuit breaker in the closed state, improving the safety of the circuit breaker.

When the opening and closing mechanism 4 needs to switch to the opening state, press the opening part 62, the opening part 62 moves toward the inside of the base 1, and the end of the second slope 622 close to the lock is moved away from the moving path of the third convex part 733 , the restriction on the third protrusion 733 is released, so that the second locking member 73 can move toward the unlocking position, so as to unlock the unlocking member 72 , and the first locking member 71 and the second locking member 73 can retract into the base 1 .

In some embodiments, the opening member 62 and the closing member 61 are oppositely disposed on two sides of the third protrusion 733 . As shown in FIG. 25 , the closing member 61 is provided with a third inclined surface 612 , and when the brake is opened, the third inclined surface 612 cooperates with the third convex portion 733 so that the second locking member 73 is in an unlocked position. Optionally, the closing member 61 is provided with a first groove 611 , and the sidewall of the first groove 611 is inclined to form a second slope 622 .

The third slope 612 is disposed away from the locking opening, the third slope 612 is opposite to the second slope 622 , and the third protrusion 733 is located between the second slope 622 and the third slope 612 . When the opening member 62 is pressed to open the brake, the second slope 622 gives way to the movement path of the third convex portion 733, and the opening member 62 moves toward the outside of the base 1 by driving the closing member 61 through the first transmission member 41, and the third slope 612 contacts the third protrusion 733 and pushes the third protrusion 733 toward the second slope 622, driving the first locking body 711 to rotate downward to the unlocked position, the extension part 734 retracts to the base 1, and the second protrusion 732 moves along The second limiting groove 7223 enters the first limiting groove 7222 , and the unlocking member 72 can move along the first moving direction X to unlock the first locking member 71 .

In the unlocked state, the end of the third slope 612 away from the lock is blocked on the other side of the third protrusion 733 to limit the second locking member 73 to the unlocked position, and the extension 734 retracts into the base 1 to avoid extension Part 734 interferes with the external structure of the circuit breaker, so that the circuit breaker can enter and leave the installation position in the open state. At this time, the second protrusion 732 is located in the first limiting groove 7222, the unlocking member 72 can move along the first moving direction X, the first locking member 71 can extend out of the base 1 to limit the circuit breaker in the installation position, the first The locking part 71 can also be retracted into the base 1 under the driving of the unlocking part 72 to unlock the circuit breaker, so that the circuit breaker can be pulled out from the installation position.

In addition, when the second convex part 732 is located in the first limiting groove 7222, the two side walls of the first limiting groove 7222 can be in contact with the two sides of the second convex part 732 in the third moving direction Z, so as to limit the second convex part 732. The protrusion 732 moves along the third moving direction Z, thereby restricting the opening and closing mechanism 4 linked with the second protrusion 732 from switching from the opening state to the closing state, thereby preventing accidental closing during the plugging and unplugging process of the circuit breaker lead to safety risks.

Optionally, the first moving direction X is the same as the pulling out direction of the circuit breaker. When the unlocking member 72 is pulled out along the first moving direction X, not only the first locking member 71 can be driven to retract into the base 1 to unlock, but also the circuit breaker can be disconnected. The circuit breaker can be pulled out, so that the unlocking and pulling out of the circuit breaker can be realized through one action, which simplifies the operation steps.

In some embodiments, the second part 7112 is provided with a fourth slope 71121, the fourth slope 71121 faces one end of the circuit breaker for insertion into the installation position, and the fourth slope 71121 is stressed during the insertion of the circuit breaker into the installation position, so as to The second part 7112 is retracted into the base 1, so that in the process of inserting the circuit breaker into the installation position, it is not necessary to drive the first locking member 71 to retract into the base 1 through the unlocking member 72, further simplifying the operation steps.

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

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

As shown in Figure 4, Figure 5, Figure 6 and Figure 7, initially, the circuit breaker is disconnected, the moving contact 3 is separated from the static contact 2, the opening and closing mechanism 4 is in the opening state, and the first transmission member 41 is in the In the first initial position, the second transmission member 42 is in the second initial position. At this moment, the locking mechanism 7 is unlocked.

The process of electric control closing and locking:

As shown in Figures 8 and 9, the movable part 54 of the electric mechanism 5 moves along the first moving direction X and drives the driving rod 45, and the driving rod 45 drives the first transmission part 41 to rotate in the first clockwise direction, and the first transmission part 41 The first connecting member 46 drives the moving contact 3 to rotate in the first clockwise direction, and pushes the second transmission member 42 to rotate in the first clockwise direction. When the first transmission member 41 rotates to the closing position, the second transmission member 42 rotates. To the middle position, the shifting block 422 breaks away from the restriction of the first limiting member 44 and rotates to straddle the sliding groove 4122 under the action of the second elastic reset member 423, and the moving contact 3 contacts the static contact 2, so that the circuit breaker is turned on.

At the same time, driven by the first transmission member 41, the closing member 61 moves toward the base 1, and the opening member 62 moves toward the outside of the base 1. The opening member 62 restricts the second locking member 73 to the locked position, and the unlocking member 72 Unable to move, the first locking member 71 and the second locking member 73 jointly lock the circuit breaker.

After the circuit breaker is connected, as shown in Figure 10 and Figure 11, the electric mechanism is powered off, and the driving lever 45 is driven in the opposite direction, and the driving lever 45 moves along the chute 4122 and passes through the shifting block 422, and the shifting block 422 is pushed by the shifting rod 45 Turn to one side of the chute 4122 so that the driving rod 45 can pass through, and after the driving rod 45 passes, the shifting block 422 is rotated to the seventh position under the action of the second elastic reset member 423 .

The closing action is completed, as shown in Figure 2, the electric mechanism 5 is in a power-off state, and each part of the electric mechanism 5 is in the original position; the opening and closing mechanism 4 is in the closing state, the first transmission member 41 is in the closing position, and the The second transmission member 42 is in the middle position, the first elastic reset member compresses and accumulates elastic force; the first locking member 71 and the second locking member 73 of the locking mechanism 7 both extend out of the base 1, the unlocking member 72 cannot move, and the circuit breaker are locked in the installed position.

The process of electric control opening and unlocking:

As shown in Fig. 12 and Fig. 13, the electric mechanism 5 is energized and drives the driving rod 45, the driving rod 45 moves along the chute 4122 to contact the shifting block 422, and applies force to the shifting block 422 to drive the second transmission member 42 along the first Turn clockwise, 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 Break away from the static contact 2, and the circuit breaker is disconnected.

After the circuit breaker is disconnected, the electric mechanism 5 returns to its original position in the opposite direction, and drives the lever 45 to move along the chute 4122 and return to its original position; the second transmission member 42 moves in the second clockwise direction under the action of the first elastic reset member. Turn back from the opening position to the second initial position, and push the first transmission member 41 to return to the first initial position, and the dial 422 is rotated to one side of the chute 4122 under the action of the first limiter 44, and the opening and closing Mechanism 4 is in the opening state.

At the same time, driven by the first transmission member 41, the closing part 61 moves toward the outside of the base 1, and the opening part 62 moves toward the inside of the base 1. The closing part 61 limits the second locking part 73 to the unlocked position, and the second lock The stopper 73 unlocks the circuit breaker and the unlocking member 72, the first locking member 71 is kept protruding from the base 1 under the action of the first elastic support 74, and the unlocking member 72 can move to drive the first locking member 71 to retract into the base 1 to unlock breaker.

The opening action is completed, as shown in Figure 1, the electric mechanism 5 is in the power-off state, and all parts of the electric mechanism 5 are in their original positions; the opening and closing mechanism 4 returns to the opening state, and the first transmission member 41 is in the first initial position , the second transmission member 42 is in the second initial position; the locking mechanism 7 is in the unlocked state, the second locking member 73 retracts into the base 1, and the unlocking member 72 can move to drive the first locking member 71 to retract into the base 1. At this time, the unlocking part 72 can be pulled to retract the first locking part 71, and then the circuit breaker can be pulled out of the installation position by using the pulling force. At the same time, when the pulled out circuit breaker is inserted toward the installation position, the inner wall of the equipment at the installation position Squeeze the first locking member 71 so that the circuit breaker can be inserted into the installation position. After the circuit breaker is inserted into the installation position, the first locking member 71 elastically protrudes into the lock housing in the installation position to prevent the circuit breaker from falling off.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

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.

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