Locking mechanism of circuit breaker and circuit breaker

Abstract

The application relates to the technical field of low-voltage electrical apparatus, in particular to a locking mechanism of a circuit breaker and the circuit breaker. The circuit breaker comprises a shell and a switching mechanism, the switching mechanism is in the shell, and the locking mechanism of the circuit breaker comprises: a base body fixedly arranged in the shell; a first locking piece movably arranged in the base body along a second moving direction and capable of extending out of the shell to lock the circuit breaker; an unlocking piece movably connected to the base body along a first moving direction, 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 at a first preset angle, and the first preset angle is greater than zero degrees; a second locking piece rotatably arranged in the base body and having 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 switching mechanism, the second locking piece is in the locking position when the switching mechanism is closed, and the second locking piece is in the unlocking position when the switching mechanism is opened.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a locking mechanism for a circuit breaker and a circuit breaker. Background Technology

[0002] With technological advancements, the types and quantities of electrical equipment have increased, and these devices have become increasingly miniaturized and intelligent. The traditional method of connecting multiple sockets with a single circuit breaker is no longer sufficient to meet the power supply and protection requirements of these devices. To address the diverse power supply needs of electrical equipment, plug-in circuit breakers are widely used. These breakers can be inserted into the installation position like a plug for quick and convenient connection to the circuit, and can also be unplugged from the installation position for quick and convenient removal from the circuit.

[0003] While facilitating insertion and removal, the safety and stability requirements of circuit breakers cannot be ignored. Inserting or removing circuit breakers while they are closed, or the circuit breaker accidentally coming out of its installation position, can have adverse effects on the safety of electrical equipment, the stability of power supply, and the personal safety of users. Therefore, preventing circuit breakers from being pulled out while they are closed and preventing them from accidentally coming out of their installation position are key to improving the safety and stability of circuit breakers. Summary of the Invention

[0004] This application aims to provide a locking mechanism for a circuit breaker and a circuit breaker in order to improve the safety and stability of the circuit breaker.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, embodiments of this application provide a locking mechanism for a circuit breaker, the circuit breaker including a closing and opening mechanism, the locking mechanism comprising: a base; a first locking member movably disposed on the base along a second moving direction and capable of extending out of the base to lock the circuit breaker; an unlocking member movably connected to the base along a first moving direction, the unlocking member being configured to drive the first locking member to retract into the base to unlock the circuit breaker when moving; the first moving direction and the second moving direction are set at a first preset angle, the first preset angle being greater than zero degrees; a second locking member rotatably disposed on the base and having a locking position restricting the movement of the unlocking member and an unlocking position allowing the unlocking member to move; the second locking member is linked to the closing and opening mechanism, the second locking member being in the locked position when the closing and opening mechanism is closed, and the second locking member being in the unlocked position when the closing and opening mechanism is open.

[0007] The locking mechanism of the circuit breaker provided in this application, by setting a first locking element and an unlocking element, as well as a second locking element linked with the opening and closing mechanism, allows the first locking element to extend and retract from the base when the circuit breaker is plugged into the installation position. This prevents the circuit breaker from accidentally coming out of the installation position and improves the stability of the circuit breaker. Simultaneously, by setting the second locking element to cooperate with the unlocking element, the second locking element is linked with the opening and closing mechanism of the circuit breaker. When the circuit is opened, the unlocking element is allowed to move, allowing the first locking element to retract into the base and unlock, facilitating the plugging into or unplugging of the circuit breaker from the installation position. When the circuit is closed, the movement of the unlocking element is restricted, allowing the first locking element to remain extended from the base. Under the restriction of the first locking element, the circuit breaker cannot be pulled out of the installation position, thus preventing the circuit breaker from being pulled out in the closed state and improving the safety and stability of the circuit breaker.

[0008] Furthermore, in the above technical solution, the unlocking component and the first locking component are linked together and move in different directions. The second locking component restricts the movement of the unlocking component along the first moving direction, thereby restricting the movement of the first locking component along the second moving direction. When the first locking component and the second locking component are locked, the entire assembly consisting of the unlocking component, the first locking component, and the second locking component is subjected to force. When the circuit breaker is subjected to brute force pulling, the pulling force is dispersed through the connection nodes of the unlocking component and the second locking component, and the connection nodes of the first locking component and the unlocking component, and then transmitted to various parts in different directions, thereby improving the circuit breaker's ability to resist brute force pulling and improving the safety and stability of the circuit breaker.

[0009] In some embodiments of this application, the unlocking member includes a gripping part, a connecting part, and a driving part. The connecting part is movably connected to the base along the first moving direction. The gripping part extends out of the base for human hand operation. The driving part cooperates with the first locking member.

[0010] In the above technical solution, when the second locking member is in the unlocked position, when a person holds the holding part of the unlocking member and pulls the unlocking member outward along the first moving direction, the driving part can drive the first locking member to retract into the circuit breaker. Therefore, the circuit breaker can be unlocked and pulled out by pulling the unlocking member, making the operation more convenient.

[0011] In some embodiments of this application, the driving part is provided with a first inclined surface, and the first locking member includes a first locking body and a first protrusion. The first locking body is extendably disposed on the base, and the first protrusion is connected to the first locking body. The first protrusion cooperates with the first inclined surface.

[0012] In the above technical solution, the unlocking component and the first locking component form an inclined surface fit. On the one hand, it can effectively realize the driving fit between the unlocking component and the first locking component; on the other hand, the unlocking component and the first locking component are not directly connected, so when one is driven by brute force, the other is not easily damaged; furthermore, it is also convenient to produce and install the unlocking component and the first locking component separately, reducing the difficulty of production and installation.

[0013] In some embodiments of this application, the second direction of movement is perpendicular to the first inclined plane.

[0014] In the above technical solution, by setting the second moving direction to be perpendicular to the first inclined plane, the force between the first inclined plane and the first locking member is mainly along the second moving direction, and the component force in other directions is reduced, which is beneficial to drive the first locking member to retract into the base with a smaller force.

[0015] In some embodiments of this application, the locking mechanism of the circuit breaker further includes: a first elastic support member disposed between the base and the first locking member, the first elastic support member having a tendency to extend the first locking member out of the base; and a second elastic support member disposed between the base and the unlocking member, the second elastic support member having a tendency to return the unlocking member to its initial position so that the first locking member can extend out of the base.

[0016] In the above technical solution, when not subjected to external force, the first locking member remains extended from the base under the action of the first elastic support and the second elastic support, which can ensure that the circuit breaker is locked when it is plugged into the installation position, and prevent the circuit breaker from accidentally coming out.

[0017] In some embodiments of this 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 the third moving direction, the third moving direction is set at a second preset angle with the first moving direction, and the second preset angle is greater than zero degrees; the second locking member includes a second locking body and a second protrusion, the second protrusion is disposed on the second locking body, the second locking member is in the unlocked position when the second protrusion engages with the first limiting groove, and the second locking member is in the locked position when the second protrusion engages with the second limiting groove.

[0018] In the above technical solution, by providing a second protrusion, a first limiting groove extending along a first moving direction, and a second limiting groove extending along a third moving direction, when the second protrusion engages with the second limiting groove, the two side walls of the second limiting groove abut against the two sides of the second protrusion in the first moving direction, restricting the movement of the unlocking member along the first moving direction, so that the first locking member remains extended to lock the circuit breaker; when the opening and closing mechanism opens, it drives the second protrusion to move along the third moving direction and enter the first limiting groove. When the second protrusion engages with the first limiting groove, the second protrusion can move along the first limiting groove, thereby allowing the unlocking member to move relative to the second locking member along the first moving direction, thus unlocking the first locking member. Furthermore, correspondingly, after the unlocking member moves, the two side walls of the first limiting groove can abut against the two sides of the second protrusion in the third moving direction, restricting the movement of the second protrusion along the third moving direction, thereby restricting the opening and closing mechanism linked to the second protrusion from switching from the opening state to the closing state, thus preventing accidental closing of the circuit breaker during insertion and removal, which could lead to safety risks.

[0019] In some embodiments of this application, the second locking member further includes an extension connected to the second locking body. When the second locking member is in the locked position, the extension extends out of the base to lock the circuit breaker, and when the second locking member is in the unlocked position, the extension retracts into the base to unlock the circuit breaker.

[0020] In the above technical solution, by providing an extension in the second locking member, the second locking member can not only lock the unlocking member when it is in the locked position, but the extension of the second locking member can also lock the circuit breaker together with the first locking member, thereby improving the ability to resist brute force insertion and removal, and further preventing the circuit breaker from being inserted or removed when it is closed.

[0021] In some embodiments of this application, the substrate is formed with a first blocking surface and a second blocking surface, the first blocking surface and the second blocking surface are disposed opposite to each other along the first moving direction, and the connecting portion is formed with a protrusion, the protrusion being disposed between the first blocking surface and the second blocking surface.

[0022] 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 component; on the other hand, when the unlocking component is pulled out, the protrusion acts on the first blocking surface or the second blocking surface to transmit an outward pulling force to the substrate.

[0023] Secondly, embodiments of this application also provide a circuit breaker, comprising: a locking mechanism of the circuit breaker as described in any of the first aspects, wherein the unlocking member of the locking mechanism of the circuit breaker is movable to drive the first locking member to unlock the circuit breaker, and a second locking member of the locking mechanism of the circuit breaker restricts the movement of the unlocking member to a locked position and allows the unlocking member to move to an unlocked position; and a closing / opening mechanism for driving the second locking member to move between the locked position and the unlocked position, wherein the second locking member is in the locked position when the closing / opening mechanism is closed, and the second locking member is in the unlocked position when the closing / opening mechanism is open.

[0024] In the above technical solution, the circuit breaker is locked in the installation position when the first locking member is extended, preventing the circuit breaker from accidentally coming out of the installation position. Furthermore, by moving the unlocking member, the first locking member can be retracted into the base, allowing the circuit breaker to be plugged into or pulled out of the installation position. At the same time, the opening and closing mechanism drives the second locking member to restrict the movement of the unlocking member when the circuit is closed, thereby keeping the first locking member extended. This prevents the circuit breaker from being pulled out in the closed state, ensuring the stability of the circuit where the circuit breaker is located and preventing safety risks caused by pulling out the circuit breaker in the closed state, thus improving the stability and safety of the circuit breaker.

[0025] In some embodiments of this application, the second locking member includes a second locking body and a third protrusion, the third protrusion being disposed on the second locking body; the opening and closing mechanism includes an opening member and a closing member, the opening member and the closing member being disposed opposite to each other on both sides of the third protrusion, the opening member having a second inclined surface, the closing member having a third inclined surface, when the opening and closing mechanism is closed, the second inclined surface cooperates with the third protrusion to make the second locking member be in the locked 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 unlocked position.

[0026] In the above technical solution, the second locking member is provided with a third protrusion, and the opening and closing mechanism includes an opening member and a closing member respectively provided on both sides of the third protrusion. During the closing process, the opening member and the closing member move relative to each other, and during the opening process, the opening member and the closing member move back in opposite directions. The opening member is provided with a second inclined surface, and the closing member is provided with a third inclined surface. The second inclined surface and the third inclined surface cooperate with the third protrusion to drive the second locking member to move. That is, when closing, the third inclined surface disengages from the third protrusion, and the opening member drives the third protrusion through the second inclined surface to make the second locking member reach the locked position. When opening, the second inclined surface disengages from the third protrusion, and the closing member drives the third protrusion through the third inclined surface to make the second locking member reach the unlocked position. The second locking member is secured in either the locked or unlocked position by the cooperation of the opening member with the second inclined surface, the closing member with the third inclined surface, and the third protrusion. This prevents the second locking member from displacing in the closed state, which could cause the unlocking member to unlock unexpectedly, thus affecting the stability and safety of the circuit breaker. It also prevents the second locking member from displacing in the open state, which could restrict the movement of the unlocking member and affect the insertion and removal of the circuit breaker. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the on-state of a circuit breaker provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the open state of a circuit breaker provided in an embodiment of this application;

[0030] Figure 3 A schematic diagram of a gate opening and closing mechanism provided in an embodiment of this application;

[0031] Figure 4 A schematic diagram of the opening and closing mechanism provided in an embodiment of this application in the open state;

[0032] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0033] Figure 6 A schematic diagram of the second transmission member in the open state according to an embodiment of this application;

[0034] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0035] Figure 8A schematic diagram of the closing process of the opening and closing mechanism provided in an embodiment of this application;

[0036] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0037] Figure 10 A schematic diagram of the opening and closing mechanism provided in an embodiment of this application in the closed state;

[0038] Figure 11 for Figure 10 A magnified view of a portion of the image;

[0039] Figure 12 A schematic diagram of the opening process of the opening and closing mechanism provided in an embodiment of this application;

[0040] Figure 13 for Figure 12 A magnified view of a portion of the image;

[0041] Figure 14 A schematic diagram showing that both the first locking member and the second locking member of the locking mechanism of the circuit breaker provided in an embodiment of this application are locked.

[0042] Figure 15 A schematic diagram showing the locking of the first locking member and the unlocking of the second locking member of the locking mechanism of a circuit breaker provided in an embodiment of this application;

[0043] Figure 16 A schematic diagram showing that both the first locking member and the second locking member of the locking mechanism of the circuit breaker provided in an embodiment of this application are unlocked;

[0044] Figure 17 This is a schematic diagram of the second locking member in the unlocked position according to an embodiment of this application;

[0045] Figure 18 A schematic diagram of the second locking member in the locked position according to an embodiment of this application;

[0046] Figure 19 This is a first-view schematic diagram of an unlocking device provided in an embodiment of this application;

[0047] Figure 20 This is a second-view schematic diagram of an unlocking device provided in an embodiment of this application;

[0048] Figure 21 A schematic diagram of the portion of a base for mounting a locking mechanism provided in an embodiment of this application;

[0049] Figure 22 A schematic diagram of a first locking member provided in an embodiment of this application;

[0050] Figure 23A schematic diagram of a second locking member provided in an embodiment of this application;

[0051] Figure 24 A schematic diagram of a tripping device provided in an embodiment of this application;

[0052] Figure 25 A schematic diagram of a closing device provided in an embodiment of this application;

[0053] Icons: 1-Base, 13-Positioning key, 14-First mounting hole, 15-Second mounting hole, 16-First blocking surface, 17-Second blocking surface, 18-First guide surface, 2-Stationary contact, 3-Moving contact, 31-Second rotating shaft, 32-Second protrusion, 4-Closing / opening mechanism, 41-First transmission component, 4113-Notch, 4122-Slide groove, 42-Second transmission component, 4211-Third protrusion, 4212-First protrusion, 422-Toggle block, 423-Second elastic reset component, 44-First limiting component, 45-Toggle lever, 46-First connecting component, 47-Second connecting component, 48-Third connecting component, 49-First rotating shaft, 5-Electric mechanism, 61-Closing component, 611-First groove, 612-Third inclined surface, 62-Closing component, 621-Second groove, 622 - Second inclined surface, 7- Locking mechanism, 71- First locking member, 711- First locking body, 7111- First part, 71111- Third blocking surface, 71112- Second guiding surface, 7112- Second part, 71121- Fourth inclined surface, 712- First protrusion, 713- Guide rod, 72- Unlocking member, 721- Grip part, 722- Connecting part, 7221- Strip groove, 7222- First limiting groove, 7223- Second limiting groove, 7224- Protrusion, 7225- Positioning hole, 723- Driving part, 7231- First inclined surface, 73- Second locking member, 731- Second locking body, 732- Second protrusion, 733- Third protrusion, 734- Extension part, 74- First elastic support member, 75- Second elastic support member, 8- Flexible connector. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0057] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0058] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0059] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. A circuit breaker has two states: on and off. A circuit breaker consists of moving contacts and stationary contacts. When the moving and stationary contacts are connected, the circuit breaker is on. When the moving and stationary contacts are separated, the circuit breaker is off.

[0061] like Figure 1 and Figure 2As shown in the figure, this application provides a circuit breaker, which includes a housing (not shown), a base 1, a moving contact 3, a stationary contact 2, a closing and opening mechanism 4, an electric mechanism 5, and a locking mechanism 7.

[0062] The base 1 is used to mount the functional components of the circuit breaker, such as the moving contact 3, the stationary contact 2, the opening and closing mechanism 4, the electric mechanism 5, and the locking mechanism 7. The outer casing surrounds the base 1 to provide isolation and protection. It should be noted that the outer casing is not necessarily a completely enclosed structure, but may have openings or wiring holes depending on its function to allow the internal functional components to connect to external wiring. In some embodiments, the outer casing independently forms an internal space, and the base 1 is disposed within the internal space of the outer casing. In other embodiments, the base 1 and the outer casing together define the internal space.

[0063] For ease of observation, the outer casing has been omitted from the accompanying drawings provided in the embodiments of this application.

[0064] The stationary contact 2 is fixedly mounted on the base 1, and the moving contact 3 is movably mounted on the base 1 so that the moving contact 3 and the stationary contact 2 can be connected or separated. When the moving contact 3 and the stationary contact 2 are connected, the circuit breaker connects the circuit in which it is located. When the moving contact 3 and the stationary contact 2 are separated, the circuit breaker disconnects the circuit in which it is located.

[0065] 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. When the opening state is open, the opening and closing mechanism 4 causes the moving contact 3 to disengage from the stationary contact 2. When the closing state is closed, the opening and closing mechanism 4 causes the moving contact 3 to connect with the stationary contact 2.

[0066] The electric mechanism 5 is used to switch the opening and closing mechanism 4 between the open and closed states when energized, so as to realize the automatic control of the circuit breaker to connect and disconnect. After switching, the circuit breaker is de-energized and returns to the initial state. The electric mechanism 5 can be an electric cylinder, electromagnetic mechanism, etc.

[0067] The locking mechanism 7 is used to lock the circuit breaker in the installation position. The locking mechanism 7 is linked with the opening and closing mechanism 4. When the opening and closing mechanism 4 is closed, the circuit breaker is locked in the installation position. When the opening and closing mechanism 4 is open, the circuit breaker is allowed to be pulled out under external force to avoid the circuit breaker from accidentally coming out in the closed state and to prevent the circuit breaker from being plugged in or unplugged in the closed state.

[0068] The structure of the opening and closing mechanism 4 is combined with Figures 1-3 As shown.

[0069] The opening and closing mechanism 4 includes a first transmission component 41 and a second transmission component 42, as well as an opening component 62 and a closing component 61.

[0070] like Figure 3 As shown, the circuit breaker also includes a first rotating shaft 49, a second rotating shaft 31, and a first connecting member 46.

[0071] The first transmission member 41 and the second transmission member 42 are both rotatably connected to the base 1 via the first rotating shaft 49. Therefore, the first transmission member 41 and the second transmission member 42 can rotate around the first rotating shaft 49 in a first clockwise direction and a second clockwise direction, which are opposite to each other. For example, the first clockwise direction is clockwise and the second clockwise direction is counterclockwise.

[0072] The moving contact 3 is rotatably connected to the base 1 via the second rotating shaft 31. The first connecting member 46 connects the first transmission member 41 and the moving contact 3.

[0073] The closing component 61 and the opening component 62 are respectively movably disposed in the base 1. One end of the closing component 61 and one end of the opening component 62 are disposed in the base 1 and cooperate with the first transmission component 41. The other end of the closing component 61 and the other end of the opening component 62 extend out of the base 1 for manual operation.

[0074] like Figure 3 As shown, the opening and closing mechanism 4 also includes a second connecting member 47 and a third connecting member 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.

[0075] The opening device 62, closing device 61 and the first transmission device 41 are linked together. When the first transmission device 41 rotates, one of the opening device 62 and the closing device 61 moves toward the inside of the base 1 and the other moves toward the outside of the base 1.

[0076] like Figure 4 and Figure 5 As shown, in the open state, the first transmission member 41 is in the first initial position, and the other end of the closing member 61 extends out of the base 1 for manual operation. Pressing the other end of the closing member 61 causes it to move inward toward the base 1, driving the first transmission member 41 to rotate from the first initial position to the closed position in the first clockwise direction via the second connecting member 47. This switches the opening and closing mechanism 4 to the closed state, with the moving contact 3 connected to the stationary contact 2. Simultaneously, the first transmission member 41 drives the opening member 62 to move outward toward the base 1 via the third connecting member 48, causing the other end of the opening member 62 to extend out of the base 1.

[0077] like Figure 10 and Figure 11As shown, in the closed state, the first transmission member 41 is in the closed position, and the other end of the opening member 62 extends out of the base 1 for manual operation. When switching to the open state, pressing the other end of the opening member 62 moves the opening member 62 toward the base 1, driving the first transmission member 41 to rotate back from the closed position to the first initial position in the second clockwise direction via the third connecting member 48, thus switching the opening and closing mechanism 4 to the open state. The moving contact 3 disengages from the stationary contact 2, and simultaneously, the first transmission member 41 drives the closing member 61 to move toward the outside of the base 1 via the second connecting member 47, so that the other end of the closing member 61 extends out of the base 1.

[0078] Thus, through the closing component 61 and the opening component 62, the circuit breaker provided in this application embodiment can realize manual control of the circuit breaker's on / off state.

[0079] The first transmission member 41 and the second transmission member 42 are engaged in a unidirectional transmission cooperation. Exemplarily, in combination with... Figure 1 and Figure 2 As shown, the first transmission member 41 has a notch, and the second transmission member 42 has a third protrusion 4211; as Figure 3 As shown, the third protrusion 4211 fits into the notch 4113, and the third protrusion 4211 can move within the notch 4113. Thus, when the first transmission member 41 moves to the closed position, and the moving contact 3 connects to the stationary contact 2, one side wall of the notch abuts against the third protrusion, which 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, thereby allowing the second transmission member 42 to continue moving relative to the first transmission member 41 in a first clockwise direction.

[0080] As mentioned above, the first transmission member 41 has a first initial position and a closed position, while the second transmission member 42 has a second initial position and an intermediate position. When the first transmission member 41 moves from the first initial position to the closed position, it drives the second transmission member 42 to move from the second initial position to the intermediate position. The second transmission member 42 also has an open position. When the second transmission member 42 continues to move relative to the first transmission member 41 in a first clockwise direction, it can reach the open position.

[0081] The second transmission member 42 has a first protrusion 4212, which is located on the outer periphery of the second transmission member 42 and extends radially from the second transmission member 42. For example... Figure 3 As shown, the moving contact 3 has a second protrusion 32 on its outer periphery. When the second transmission member 42 rotates from the middle position to the open position, the first protrusion 4212 will interfere with the second protrusion 32, thereby pushing the moving contact 3 to rotate and disengage from the stationary contact 2.

[0082] The opening and closing mechanism 4 also includes a first elastic reset member (not shown in the figure), which is connected to the second transmission member 42. The first elastic reset member has a tendency to reset the second transmission member 42 to the second initial position in a second clockwise direction. The first elastic reset member is configured to accumulate elastic force in the closed state and release the elastic force after the moving contact 3 disengages from the stationary contact 2 to drive the second transmission member 42 to reset.

[0083] In other words, after the second transmission member 42 pushes the moving contact 3 away from the stationary contact 2, it will rotate back to the second initial position in the second clockwise direction under the action of the first elastic reset member, and with the cooperation of the third protrusion 4211 and the side wall of the notch, it will drive the first transmission member 41 back to the first initial position, thus completing the circuit breaker opening.

[0084] Therefore, by actuating the first transmission member 41 via the electric mechanism 5, the opening and closing mechanism can be closed, causing the moving contact 3 to connect with the stationary contact 2, and causing the closing member 61 to move toward the inside of the base 1, while the opening member 62 moves toward the outside of the base 1; by actuating the second transmission member 42 via the electric mechanism 5, the opening and closing mechanism can be opened, causing the moving contact 3 to disengage from the stationary contact 2, and causing the closing member 61 to move toward the outside of the base 1, while the opening member 62 moves toward the inside of the base 1.

[0085] like Figures 14-23 As shown, the locking mechanism 7 includes a first locking member 71, a second locking member 73, and an unlocking member 72.

[0086] The locking mechanism 7 is disposed inside the housing, which has a through hole (not shown in the figure) to allow the first locking member 71 to extend out to lock the circuit breaker.

[0087] like Figure 15 and Figure 16 As shown, 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 in the installation position when it extends out of the base 1. It should be noted that "extending out of the base 1" as described in this application specification means that the projection of the component on the base 1 extends beyond the edge of the base 1. For example, if the first locking member 71 extends out of the base 1, it means that a portion of the projection of the first locking member 71 extends beyond the edge of the base 1, so that the extended portion extends out of the housing through the through hole.

[0088] The unlocking member 72 is movably connected to the base 1 and is configured to retract the first locking member 71 into the base 1 when moved to unlock the circuit breaker so as to remove the circuit breaker from the installation position.

[0089] The second locking member 73 cooperates with the unlocking member 72, and the second locking member 73 is movably disposed on the base 1, such as... Figure 17 and Figure 18As shown, the second locking member 73 has a locked position and an unlocked position. When the second locking member 73 is in the locked position, it restricts the movement of the unlocking member 72. When the second locking member 73 is in the unlocked position, it allows the unlocking member 72 to move.

[0090] At the same time, the second locking member 73 is linked with the opening and closing mechanism 4. 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 unlocked position when the opening and closing mechanism 4 is opened.

[0091] By setting a locking mechanism 7 in the circuit breaker, the second locking member 73 is in the locked position when the circuit is closed, so that the unlocking member 72 cannot move. Therefore, 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, thereby preventing the circuit breaker from being pulled out in the closed state and improving the safety and stability of the circuit breaker.

[0092] By providing a locking mechanism 7 in the circuit breaker, the second locking member 73 is in the unlocked position when the circuit is tripped, allowing the unlocking member 72 to move. When the unlocking member 72 does not move, the circuit breaker can be confined to the installation position under the action of the first locking member 71, preventing the circuit breaker from accidentally coming out of the installation position and improving the stability of the circuit breaker. When the unlocking member 72 moves, the first locking member 71 retracts into the base 1 to unlock the circuit breaker, making it easy to plug the circuit breaker into or pull it out of the installation position.

[0093] The unlocking member 72 is movably connected to the base 1 along a first moving direction X, and the first locking member 71 is extendably disposed on the base 1 along a second moving direction Y. The second locking member 73 restricts the movement of the unlocking member 72 along the first moving direction X, thereby preventing the unlocking member 72 from driving the first locking member 71 to move along the second moving direction Y. The first moving direction X and the second moving direction Y are set at a first preset angle, which is greater than zero degrees. In some embodiments, the first preset angle can be 90°.

[0094] like Figure 19 and Figure 20 As shown, the unlocking member 72 includes a gripping part 721, a connecting part 722, and a driving part 723. The connecting part 722 is movably connected to the base 1. The gripping part 721 extends from the base 1 for a person to hold and pull. The driving part 723 is used to drive the first locking member 71 to retract.

[0095] One of the base 1 and the connecting part 722 is provided with a strip groove 7221 extending along the first moving direction X, and the other is provided with a positioning key 13. The positioning key 13 cooperates with the strip groove 7221 to limit the moving direction of the unlocking member 72.

[0096] For example, such as Figure 21 As shown, the positioning key 13 is located on the base 1, as... Figure 19As shown, a strip groove 7221 is provided on the connecting part 722. Pulling the unlocking member 72 along the first moving direction X will, on the one hand, drive the first locking member 71 to retract into the base 1 to unlock, and on the other hand, transmit the pulling force to the base 1 by the end face of the strip groove 7221 abutting against the positioning key 13, thereby pulling out the circuit breaker as a whole while unlocking.

[0097] like Figure 16 As shown, the base 1 is also 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 opposite to each other, and the connecting part 722 is formed with a protrusion 7224, which is disposed between the first blocking surface 16 and the second blocking surface 17.

[0098] The first blocking surface 16 cooperates with the protrusion 7224 to restrict the unlocking member 72 from moving outward toward the base 1, and the second blocking surface 17 cooperates with the protrusion 7224 to restrict the unlocking member 72 from moving inward toward the base 1.

[0099] On the one hand, the first blocking surface 16, the second blocking surface 17, and the protrusion 7224 cooperate to limit the travel 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 an outward pulling force to the base 1. That is, during the process of pulling out the circuit breaker, the first blocking surface 16 and the positioning key 13 share the force, which can reduce the force on the positioning key 13 and prevent damage to the positioning key 13.

[0100] like Figure 22 As shown, 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 locking body 711.

[0101] The drive unit 723 has a first inclined surface 7231, which engages with the first protrusion 712.

[0102] When the unlocking component 72 moves, the first inclined surface 7231 moves relative to the first protrusion 712. For example... Figure 15 and Figure 16 As shown, when the unlocking member 72 moves outward from the base 1 along the first moving direction X, the first protrusion 712 moves along the first inclined surface 7231, causing the first locking body 711 to retract into the base 1. When the unlocking member 72 moves inward from the base 1 along the first moving direction X, the first protrusion 712 moves in the opposite direction along the first inclined surface 7231, causing the first locking body 711 to extend out of the base 1.

[0103] In some embodiments, the locking mechanism 7 further includes a first elastic support 74 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 extend out of the base 1.

[0104] like Figure 15 , Figure 16 and Figure 21 As shown, the base 1 has 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 which is connected to the first locking body 711, and the other end of which is inserted into the first mounting hole 14. A first elastic support member 74 is sleeved on the guide rod 713, with one end of the first elastic support member 74 abutting against the surface of the first locking body 711 and the other end abutting against the bottom of the first mounting hole 14. When the unlocking member 72 moves outward from the base 1, it drives the first locking member 71 to retract into the base 1 and compresses the first elastic support member 74. When the unlocking member 72 moves inward from the base 1, the first elastic support member 74 releases its elastic force, driving the first locking member 71 to extend outward from the base 1.

[0105] It should be noted that in the accompanying drawings of this application embodiment, the second moving direction Y is approximately perpendicular to the first moving direction X. However, in other embodiments, the second moving direction Y can also be set at other angles to the first moving direction X. For example, the second moving direction Y may be offset to the right by a certain angle, that is, the opening end of the first mounting hole 14 is offset to the right, the first mounting hole 14 extends from the upper right to the lower left, the guide rod 713 of the first locking member 71 is adapted to the first mounting hole 14, and when the first locking member 71 moves along the second moving direction Y, it either extends to the upper right or retracts to the lower left. By setting the second moving direction Y to be offset to the right, the second moving direction Y tends to be perpendicular to the first inclined surface 7231. The force between the first inclined surface 7231 and the first locking member 71 is mainly along the second moving direction Y, and the component force in other directions is reduced, which is beneficial to achieve the retraction of the first locking member 71 into the base 1 with a smaller force.

[0106] In some embodiments, such as Figure 15 , Figure 16 and Figure 21 As shown, the locking mechanism 7 also includes a second elastic support 75, which is disposed between the base 1 and the unlocking member 72. The second elastic support 75 has a tendency to return the unlocking member 72 to its initial position, so as to allow the first locking member 71 to extend out of the base 1.

[0107] The base 1 is provided with a second mounting hole 15, which extends along the first moving direction X. For example... Figure 19As shown, the unlocking member 72 is provided with a positioning hole 7225, the opening of which is opposite to the opening of the second mounting hole 15. One end of the second elastic support member 75 is located inside the second mounting hole 15 and abuts against the bottom of the second mounting hole 15, and the other end of the second elastic support member 75 is located inside 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 located on both sides of the positioning key 13, respectively. When the unlocking member 72 is pulled outward, the bottom surface of the positioning hole 7225 bears the pressure transmitted by the second elastic support member 75, so that the bottom surface of the positioning hole 7225 and the first blocking surface 16 share the force on both sides of the positioning key 13, further reducing the force on the positioning key 13 and preventing damage to the positioning key 13.

[0108] like Figure 22 As shown, the first locking body 711 includes a first part 7111 and a second part 7112. The first part 7111 has a third blocking surface 71111, which is opposite to the lock opening. The second part 7112 is connected to the third blocking surface 71111 and can extend out of the lock opening. The third blocking surface 71111 abuts against the inner wall of the housing to restrict the first locking body 711 from disengaging.

[0109] The base 1 has a first guide surface 18, which is perpendicular to the plane of the lock. The first guide surface 18 contacts the first part 7111 to guide the second part 7112 to move out or retract. Figure 22 As shown, the first part 7111 is provided with a second guide surface 71112, which is in contact with the first guide surface 18.

[0110] The second locking member 73 is configured to restrict the unlocking member 72 from moving outward from the base 1, so as to lock the first locking member 71 in the extended state.

[0111] In some embodiments, such as Figure 23 As shown, the second locking member 73 includes a second locking body 731 and a second protrusion 732, with the second protrusion 732 connected to the second locking body 731.

[0112] like Figure 20 As shown, the unlocking component 72 has a first limiting groove 7222 and a second limiting groove 7223, which are connected. The first limiting groove 7222 extends along a first moving direction X, and the second limiting groove 7223 extends along a third moving direction Z. The third moving direction Z forms a second preset angle with the second moving direction Y, and the second preset angle is greater than zero degrees. In some embodiments, the second preset angle is 90°.

[0113] Combination Figure 15 , Figure 16 , Figure 17 , Figure 20 As shown, when the second locking member 73 is in the unlocked position, the second protrusion 732 engages with the first limiting groove 7222; when the second locking member 73 is in the locked position, the second protrusion 732 engages with the second limiting groove 7223.

[0114] One end of the second locking body 731 is rotatably connected to the base 1, and the second protrusion 732 is disposed at 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.

[0115] like Figure 18 As shown, the second locking body 731 is in the locked position when it rotates close to the lock jaw. Figure 17 As shown, the second locking body 731 is in the unlocked position when it rotates away from the lock opening.

[0116] 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. The two side walls of the second limiting groove 7223 abut against the two sides of the second protrusion 732 in 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.

[0117] 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. The second protrusion 732 can move in the first limiting groove 7222 along the first moving direction X, thereby enabling the unlocking member 72 to move along the first moving direction X, so as to drive the first locking member 71 to retract and unlock the circuit breaker.

[0118] 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 move out from the open end of the first limiting groove 7222. When the end of the first limiting groove 7222 away from the second limiting groove 7223 is open, 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 to be shorter, and the connecting portion 722 can reduce material usage, thereby saving costs and reducing the weight of the circuit breaker. Optionally, the width of the first limiting groove 7222 gradually increases from the end connected to the second limiting groove 7223 toward the end away from the second limiting groove 7223, so as to facilitate the second protrusion 732 moving out of and back into the first limiting groove 7222.

[0119] As before, the opening and closing mechanism 4 locks and unlocks the circuit breaker by means of the second locking element 73. The second locking element 73 is in the locked position when the opening and closing mechanism 4 is closed, and in the unlocked position when the opening and closing mechanism 4 is open.

[0120] There are multiple ways in which the second locking element 73 can be linked with the opening and closing mechanism 4.

[0121] For example, the second locking member 73 can be directly connected to the opening and closing mechanism 4 to achieve linkage. In some embodiments, the second locking member 73 can be connected to the first transmission member 41, where the second locking member 73 is in the unlocked position when the first transmission member 41 is in the first initial position, and in the locked position when the first transmission member 41 is in the closed position. In some embodiments, the second locking member 73 can be connected to the second transmission member 42, where the second locking member 73 is in the unlocked position when the second transmission member 42 is in the second initial position, and in the locked position when the second transmission member 42 is in the intermediate position.

[0122] For example, the second locking element 73 is not directly connected to the opening and closing mechanism 4. The circuit breaker is equipped with a drive mechanism for moving the second locking element 73. When the opening and closing mechanism 4 switches states, it triggers the drive mechanism to move the second locking element 73.

[0123] For example, the second locking member 73 is not directly connected to the opening and closing mechanism 4, but is activated when the opening and closing mechanism 4 switches states. The second locking member 73 may cooperate with at least one of the opening member 62 or the closing member 61 to move the second locking member 73 between the unlocked position and the open position.

[0124] like Figure 23 As shown, the second locking member 73 also includes a third protrusion 733, which is connected to the second locking body 731. The second protrusion 732 and the third protrusion 733 are located on opposite sides of the second locking body 731.

[0125] like Figure 24 As shown, the tripping member 62 is provided with a second inclined surface 622, which cooperates with the third protrusion 733 when the circuit is closed, so that the second locking member 73 is in the locked position. Optionally, the tripping member 62 is provided with a second groove 621, the sidewall of which is inclined to form the second inclined surface 622.

[0126] The third protrusion 733 is located between the second inclined surface 622 and the locking slot. When the closing member 61 is pressed to close the circuit, the first transmission member 41 drives the opening member 62 to move outward toward the base 1. The second inclined surface 622 pushes the third protrusion 733, thereby pushing the second locking body 731 to rotate upward to the locked position. In the closed state, the end of the second inclined surface 622 near the locking slot blocks one side of the third protrusion 733 to restrict the second locking member 73 to 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, thereby locking the unlocking member 72. This prevents the unlocking member 72 from driving the first locking member 71 to retract in the closed state, allowing the first locking member 71 to remain locked on the circuit breaker, preventing the circuit breaker from being pulled out in the closed state, and protecting the safety of the equipment and the personnel.

[0127] Optionally, such as Figure 17 and Figure 18 As shown, the second locking member 73 also includes an extension 734, which is connected to the second locking body 731. When the second locking member 73 is in the locked position, the extension 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. With the cooperation of the third protrusion 733 and the tripping member 62, the second locking member 73 is confined to the locked position, which can not only lock the unlocking member 72 through the second protrusion 732, but also lock the circuit breaker through the extension 734. In the closed state, the first locking member 71 and the second locking member 73 jointly lock the circuit breaker, which can improve the ability to resist brute force insertion and removal, and can prevent the circuit breaker from being accidentally unlocked due to the accidental retraction of the first locking member 71, further preventing the circuit breaker from being inserted or removed in the closed state, and improving the safety of the circuit breaker.

[0128] When the opening and closing mechanism 4 needs to be switched to the opening state, the opening member 62 is pressed, and the opening member 62 moves toward the interior of the base 1. The end of the second inclined surface 622 near the locking port moves away from the moving path of the third protrusion 733, releasing the restriction on the third protrusion 733, so that the second locking member 73 can move toward the unlocking position, so that the unlocking member 72 can be unlocked, and the first locking member 71 and the second locking member 73 can retract into the base 1.

[0129] In some embodiments, the opening member 62 and the closing member 61 are disposed opposite to each other on both sides of the third protrusion 733. For example... Figure 25 As shown, the closing member 61 is provided with a third inclined surface 612. When the circuit is opened, the third inclined surface 612 cooperates with the third protrusion 733 to make the second locking member 73 be in the 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 inclined surface 622.

[0130] The third inclined surface 612 is positioned away from the lock opening and is opposite to the second inclined surface 622. The third protrusion 733 is located between the second inclined surface 622 and the third inclined surface 612. When the tripping component 62 is pressed to trip, the second inclined surface 622 makes way for the movement path of the third protrusion 733. The tripping component 62 moves towards the outside of the base 1 driven by the first transmission component 41. The third inclined surface 612 contacts the third protrusion 733 and pushes the third protrusion 733 towards the second inclined surface 622, causing the first locking body 711 to rotate downward to the unlocked position. The extension 734 retracts into the base 1, and the second protrusion 732 enters the first limiting groove 7222 along the second limiting groove 7223. The unlocking component 72 can move along the first moving direction X to unlock the first locking component 71.

[0131] In the open position, the end of the third inclined surface 612 away from the locking slot blocks the other side of the third protrusion 733, thus limiting the second locking member 73 to the unlocked position. The extension 734 retracts into the base 1 to avoid interference between the extension 734 and the external structure of the circuit breaker, facilitating the circuit breaker's movement in and out of the installation position in the open position. 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 to the installation position, and the first locking member 71 can also retract into the base 1 under the drive of the unlocking member 72 to unlock the circuit breaker, allowing the circuit breaker to be pulled out from the installation position.

[0132] In addition, when the second protrusion 732 is located in the first limiting groove 7222, the two side walls of the first limiting groove 7222 can abut against the two sides of the second protrusion 732 in the third moving direction Z, so as to restrict the second protrusion 732 from moving in 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 the circuit breaker from accidentally closing during the insertion and removal process, which could lead to safety risks.

[0133] Optionally, the first moving direction X is the same as the circuit breaker's pull-out direction. When the unlocking member 72 is pulled along the first moving direction X, it can not only drive the first locking member 71 to retract into the base 1 to unlock, but also pull out the circuit breaker, thereby realizing the unlocking and pulling out of the circuit breaker with one action, simplifying the operation steps.

[0134] In some embodiments, the second part 7112 is provided with a fourth inclined surface 71121 facing one end of the circuit breaker for insertion into the installation position. The fourth inclined surface 71121 is subjected to force during the insertion of the circuit breaker into the installation position, so that the second part 7112 retracts into the base 1. Thus, during the insertion of 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.

[0135] In one embodiment of this application, the first moving direction X is the pull-out direction of the circuit breaker. The unlocking member 72 moves along the first moving direction X, and simultaneously, when the electric mechanism 5 is energized, the moving iron core 52 moves along the first moving direction X. In other embodiments, the moving iron core 52 may also move in other directions.

[0136] According to an embodiment of this application, the circuit breaker operates under the following principle through electric control.

[0137] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, initially, the circuit breaker is open, the moving contact 3 separates from the stationary contact 2, the opening and closing mechanism 4 is in the open 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.

[0138] The process of electrically controlled closing and locking:

[0139] like Figure 8 and Figure 9 As shown, the movable part 54 of the electric mechanism 5 moves along the first moving direction X and drives the lever 45. The lever 45 drives the first transmission part 41 to rotate in the first clockwise direction. The first transmission part 41 drives the moving contact 3 to rotate in the first clockwise direction through the first connecting part 46, and pushes the second transmission part 42 to rotate in the first clockwise direction. When the first transmission part 41 rotates to the closed position, the second transmission part 42 rotates to the middle position. The lever 422 is released from the restriction of the first limiting part 44 and rotates to the transverse slide groove 4122 under the action of the second elastic reset part 423. The moving contact 3 contacts the stationary contact 2, so that the circuit breaker is connected.

[0140] At the same time, driven by the first transmission member 41, the closing member 61 moves toward the inside of 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 cannot move. The first locking member 71 and the second locking member 73 jointly lock the circuit breaker.

[0141] After the circuit breaker is turned on, as Figure 10 and Figure 11 As shown, when the electric mechanism is de-energized, it drives the lever 45 in the opposite direction. The lever 45 moves along the slide groove 4122 and passes through the lever block 422. The lever block 422 is pushed by the lever 45 to one side of the slide groove 4122 so that the lever 45 can pass through. After the lever 45 passes through, the lever block 422 rotates to the seventh position under the action of the second elastic reset member 423.

[0142] The closing action is complete, such as Figure 2As shown, the electric mechanism 5 is in the de-energized state, and all components of the electric mechanism 5 are in their original positions; the opening and closing mechanism 4 is in the closed state, the first transmission member 41 is in the closed position, the second transmission member 42 is in the middle position, and 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 is locked in the installation position.

[0143] The process of electrically controlled tripping and unlocking:

[0144] Combination Figure 12 and Figure 13 As shown, the electric mechanism 5 is energized and drives the lever 45. The lever 45 moves along the slide groove 4122 to the contact block 422 and applies force to the block 422 to drive the second transmission member 42 to rotate in the first clockwise direction. The second transmission member 42 rotates from the middle position to the open position. The first protrusion 4212 of the second transmission member 42 interferes with the second protrusion 32 of the moving contact 3 to push the moving contact 3 to rotate and disengage from the stationary contact 2, and the circuit breaker is disconnected.

[0145] After the circuit breaker is disconnected, the electric mechanism 5 returns to its original position in the opposite direction, driving the lever 45 to move along the slide groove 4122 and return to its original position; under the action of the first elastic reset member, the second transmission member 42 rotates from the open position to the second initial position in the second clockwise direction, and pushes the first transmission member 41 to rotate back to the first initial position. The lever 422 rotates to one side of the slide groove 4122 under the action of the first limit member 44, and the opening and closing mechanism 4 is in the open state.

[0146] Simultaneously, driven by the first transmission member 41, the closing member 61 moves outward toward the base 1, and the opening member 62 moves inward toward the base 1. The closing member 61 restricts the second locking member 73 to the unlocked position. The second locking member 73 unlocks the circuit breaker and the unlocking member 72. The first locking member 71 remains extended out of the base 1 under the action of the first elastic support member 74. The unlocking member 72 can move to drive the first locking member 71 to retract into the base 1 to unlock the circuit breaker.

[0147] The tripping action is complete, such as Figure 1As shown, the electric mechanism 5 is in the de-energized state, and all components of the electric mechanism 5 are in their original positions; the opening and closing mechanism 4 returns to 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; 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 member 72 can be pulled to retract the first locking member 71, thereby using the pulling force to pull the circuit breaker out of the installation position. At the same time, when the circuit breaker is pulled out and inserted into the installation position, the inner wall of the equipment at the installation position can 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 extends into the lock housing in the installation position to restrict the circuit breaker from falling out.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A locking mechanism for a circuit breaker, the circuit breaker comprising a closing and opening mechanism (4), characterized in that, The locking mechanism (7) of the circuit breaker includes: Matrix (1); The first locking member (71) is movably disposed on the base (1) along the second moving direction and can extend out of the base (1) to lock the circuit breaker; The unlocking member (72) is movably connected to the base (1) along a first moving direction. The unlocking member (72) is configured to drive the first locking member (71) to retract into the base (1) to unlock the circuit breaker when moving. 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 degrees. The second locking member (73) is rotatably disposed on the base (1) and has a locking position that restricts the movement of the unlocking member (72) and an unlocking position that allows the unlocking member (72) to move; the second locking member (73) is linked with the opening and closing mechanism (4), and when the opening and closing mechanism (4) closes, the second locking member (73) is in the locking position, and when the opening and closing mechanism (4) opens, the second locking member (73) is in the unlocking position; The unlocking component (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. The first limiting groove (7222) extends along the first moving direction, and the second limiting groove (7223) extends along the third moving direction. The third moving direction is set at a second preset angle with the first moving direction. The second preset angle is greater than zero degrees. The second locking member (73) includes a second locking body (731) and a second protrusion (732). The second protrusion (732) is disposed on the second locking body (731). When the second locking member (73) is in the unlocked position, the second protrusion (732) engages with the first limiting groove (7222). When the second locking member (73) is in the locked position, the second protrusion (732) engages with the second limiting groove (7223).

2. The locking mechanism of the circuit breaker according to claim 1, characterized in that, The unlocking member (72) includes a gripping part (721), a connecting part (722) and a driving part (723). The connecting part (722) is movably connected to the base (1) along the first moving direction. The gripping part (721) extends out of the base (1) for human hand operation. The driving part (723) cooperates with the first locking member (71).

3. The locking mechanism of the circuit breaker according to claim 2, characterized in that, The drive unit (723) is provided with a first inclined surface (7231), and 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 disposed on the first locking body (711). The first protrusion (712) cooperates with the first inclined surface (7231).

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

5. The locking mechanism of the circuit breaker according to claim 2, characterized in that, The locking mechanism of the circuit breaker also includes: A first elastic support (74) is 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 extend out of the base (1); A second elastic support (75) is disposed between the base (1) and the unlocking member (72), the second elastic support (75) having a tendency to return the unlocking member (72) to its initial position so that the first locking member (71) can extend out of the base (1).

6. The locking mechanism of the circuit breaker according to claim 1, characterized in that, The second locking member (73) further includes an extension (734) connected to the second locking body (731). When the second locking member (73) is in the locked position, the extension (734) extends out of the base (1) to lock the circuit breaker. When the second locking member (73) is in the unlocked position, the extension (734) retracts into the base (1) to unlock the circuit breaker.

7. The locking mechanism of the circuit breaker according to claim 2, characterized in that, The substrate (1) has a first blocking surface (16) and a second blocking surface (17), which are arranged opposite to each other along the first moving direction. The connecting part (722) has a protrusion (7224), which is disposed between the first blocking surface (16) and the second blocking surface (17).

8. A circuit breaker, characterized in that, include: The locking mechanism (7) of the circuit breaker as described in any one of claims 1-7, wherein the unlocking member (72) of the locking mechanism (7) of the circuit breaker is movable to drive the first locking member (71) to unlock the circuit breaker, and the second locking member (73) of the locking mechanism (7) of the circuit breaker has a locking position that restricts the movement of the unlocking member (72) and an unlocking position that allows the unlocking member (72) to move; The opening and closing mechanism (4) is used to drive the second locking member (73) to move between the locked position and the unlocked position. When the opening and closing mechanism (4) is closed, the second locking member (73) is in the locked position, and when the opening and closing mechanism (4) is open, the second locking member (73) is in the unlocked position.

9. The circuit breaker according to claim 8, characterized in that, The second locking member (73) includes a second locking body (731) and a third protrusion (733), the third protrusion (733) being disposed on the second locking body (731); The opening and closing mechanism (4) includes an opening component (62) and a closing component (61). The opening component (62) and the closing component (61) are disposed opposite to each other on both sides of the third protrusion (733). The opening component (62) is provided with a second inclined surface (622), and the closing component (61) is provided with a third inclined surface (612). When the opening and closing mechanism (4) is closed, the second inclined surface (622) cooperates with the third protrusion (733) to make the second locking component (73) be in the locked position. When the opening and closing mechanism (4) is opened, the third inclined surface (612) cooperates with the third protrusion (733) to make the second locking component (73) be in the unlocked position.

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