Circuit breaker and power distribution equipment
By compactly integrating the drive parts with the driven parts in the circuit breaker, an efficient tripping mechanism is formed, which solves the problem of large space in the existing circuit breaker, and realizes the miniaturization and efficient fault handling of the circuit breaker.
Patent Information
- Application Number
- CN202420815109.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-18
AI Technical Summary
The electromagnetic tripping structure and thermal tripping structure of the existing circuit breaker are located on opposite sides of the contact structure, occupying a large space, which is not conducive to the miniaturization of the product.
By installing the contact mechanism and the trip mechanism in the first direction in the housing of the circuit breaker, the drive member is driven and cooperated with the driven member to form a compact and efficient system, which can handle both overload failures of the circuit breaker and short-circuit failures.
It realizes the compact design of the circuit breaker, saves space, can cut off current quickly and accurately, effectively deal with various circuit abnormalities, and meets the needs of small and efficient power equipment.
Smart Images
Figure CN222762902U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a circuit breaker and a power distribution device. Background Art
[0002] A circuit breaker is a switching device that can close, carry and disconnect current. Its main function is to provide overload protection, short circuit protection and undervoltage protection in the circuit. Specifically, when a short circuit or overcurrent occurs in the circuit, the circuit breaker can quickly cut off the circuit to prevent electrical equipment and personnel from electric shock, fire and other dangers, and protect life and property. In addition, the circuit breaker can also protect the power supply line and motor while starting the asynchronous motor infrequently. When a serious overload or short circuit or undervoltage occurs, the circuit breaker can automatically cut off the circuit to prevent the accident from expanding and ensure safe operation.
[0003] Circuit breakers have been widely used in electrical systems of residential, commercial and industrial buildings. As the number of circuit breaker applications increases, requirements are being placed on the size and performance of circuit breakers. However, in the prior art, the electromagnetic tripping structure and thermal tripping structure of the circuit breaker are located on opposite sides of the contact structure, which takes up a large space and is not conducive to the miniaturization of the product. Utility Model Content
[0004] The purpose of the present application is to provide a circuit breaker and a power distribution equipment in response to the above technical problems. By coordinating the driving of the driving component and the driven component, a compact and efficient system is formed, which can handle both the overload fault and the short circuit fault of the circuit breaker, so as to solve the problem that the electromagnetic tripping structure and the thermal tripping structure are arranged separately in the prior art, occupying a large space.
[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
[0006] In one aspect of an embodiment of the present application, a circuit breaker is provided, comprising a housing, and a contact mechanism and a tripping mechanism sequentially mounted on the housing along a first direction, wherein the tripping mechanism comprises a driving member and a driven member disposed on the housing, wherein the driving member is driven and cooperated with the contact mechanism through the driven member, and the driving member is used to drive the driven member to move in a tripping direction, so as to drive the contact mechanism to switch from a closed state to an open state;
[0007] When an overload fault occurs in the circuit breaker, the overload current flows through the driving component, causing the driving component to bend after being heated, driving the driven component to move in the tripping direction; when a short circuit fault occurs in the circuit breaker, the driven component is attracted by the driving component and moves in the tripping direction.
[0008] Optionally, the circuit breaker also includes an operating mechanism arranged on the shell, and the tripping mechanism drives the contact mechanism to switch from a closed state to an open state through the operating mechanism, the distance from the operating mechanism to the driven part is smaller than the distance to the driving part, and the operating mechanism and the contact mechanism are arranged along a second direction perpendicular to the first direction, and the projections of the operating mechanism and the tripping mechanism in the second direction at least partially overlap.
[0009] Optionally, the circuit breaker also includes an electric operating mechanism arranged in the shell, the electric operating mechanism and the tripping mechanism are arranged along a second direction perpendicular to the first direction, the distance from the electric operating mechanism to the driven part is smaller than the distance to the driving part, the electric operating mechanism and the contact mechanism are respectively located on both sides of the tripping mechanism along the first direction, and the projections of the electric operating mechanism and the tripping mechanism in the second direction at least partially overlap.
[0010] Optionally, the circuit breaker also includes a first terminal, an arc extinguishing mechanism and a second terminal arranged in sequence in the shell along the first direction, the first terminal is electrically connected to the second terminal via a tripping mechanism and a contact mechanism, the arc extinguishing mechanism corresponds to the contact mechanism, the distances from the first terminal, the arc extinguishing mechanism and the second terminal to the driven part are all greater than the distances to the driving part, and the projections of the arc extinguishing mechanism and the tripping mechanism in a second direction perpendicular to the first direction at least partially overlap.
[0011] Optionally, the tripping mechanism also includes a magnetic part and a conductive part arranged in the shell, one end of the conductive part is electrically connected to the first terminal, and the other end is respectively connected to the magnetic part and the driving part, and the angle between the length direction of the tripping mechanism and the first direction is less than or equal to 45°.
[0012] Optionally, the tripping mechanism further includes a tripping member arranged on the housing, and the driven member cooperates with the tripping member in driving, and the driven member drives the contact mechanism to switch from the closed state to the open state through the tripping member.
[0013] Optionally, the tripping member is provided with a first tripping arm and a second tripping arm, the driven member is drivingly matched with the first tripping arm, and the second tripping arm is drivingly matched with the contact mechanism.
[0014] Optionally, the tripping mechanism includes a first reset member connected to the driven member, and the driven member moves toward the tripping direction and drives the first reset member to store energy, so that the first reset member has a tendency to drive the driven member to move in a direction away from the tripping direction.
[0015] Optionally, the tripping mechanism includes a second reset member connected to the tripping member, and the tripping member moves in the tripping direction and drives the second reset member to store energy, so that the second reset member has a tendency to drive the tripping member to move in a direction away from the tripping direction.
[0016] Optionally, the driving member is located between the driven member and the magnetic member, the magnetic member is a U-shaped groove with the groove opening facing the driving member, and the driving member drives the driven member to move along the groove depth direction.
[0017] Optionally, a hook is provided on a side of the driven part close to the driving part, the driving part is passed through the hook, and the driving part is deformed by heat and then drives the driven part to move via the hook.
[0018] Another aspect of an embodiment of the present application provides a power distribution device, comprising any one of the circuit breakers described above.
[0019] The beneficial effects of this application include:
[0020] The present application provides a circuit breaker and power distribution equipment, including a housing and a contact mechanism and a tripping mechanism sequentially installed on the housing along a first direction, the tripping mechanism including a driving member and a driven member arranged on the housing, the driving member is driven and cooperated with the contact mechanism by the driven member, the driving member is used to drive the driven member to move in the tripping direction, so as to drive the contact mechanism to switch from a closed state to an open state; when an overload fault occurs in the circuit breaker, the overload current flows through the driving member to cause the driving member to bend after being heated, and drives the driven member to move in the tripping direction; when a short circuit fault occurs in the circuit breaker, the driven member is attracted by the driving member and moves in the tripping direction. The present application realizes the control of the circuit breaker state by sequentially installing the contact mechanism and the tripping mechanism in the housing along a first direction, so that the two cooperate with each other, and the space utilization rate is improved through the orderly arrangement of the two. In the design of the circuit breaker, the tripping mechanism bears the key responsibility for the opening operation. The tripping mechanism itself includes components such as the driving part and the driven part. That is, the driving part and the driven part are compactly integrated on the same side of the contact mechanism, saving space, thereby reducing the overall size of the circuit breaker. In addition, the driving part is driven by the driven part and the contact mechanism. When the circuit breaker fails, the driven part is driven by the driven part to move in the tripping direction to drive the contact mechanism to switch from the closed state to the open state, so that the circuit breaker can quickly and accurately cut off the current and effectively deal with various circuit abnormalities.
[0021] In general, by rethinking the layout of the circuit breaker's tripping mechanism and coordinating the driving components with the driven components, a compact and efficient system is formed, which can handle both the overload fault and the short-circuit fault of the circuit breaker. It not only effectively overcomes the problem of space occupation and meets the demand for small and efficient power equipment in different scenarios, but also provides comprehensive and reliable protection for the circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 A schematic diagram of the structure of a circuit breaker provided in an embodiment of the present application;
[0024] Figure 2 A schematic diagram of the connection between a tripping mechanism and a contact mechanism provided in an embodiment of the present application;
[0025] Figure 3 A schematic diagram of the installation structure of a tripping mechanism in a circuit breaker provided in an embodiment of the present application;
[0026] Figure 4 A schematic diagram of the installation angle of a tripping mechanism in a circuit breaker provided in an embodiment of the present application;
[0027] Figure 5 A schematic diagram of the structure of a release member provided in an embodiment of the present application;
[0028] Figure 6 A schematic diagram of the structure of a magnetic attraction component provided in an embodiment of the present application;
[0029] Figure 7 A schematic structural diagram of a driven component provided in an embodiment of the present application.
[0030] Icon: 100-housing; 110-first mounting axis; 120-second mounting axis; 130-third mounting axis; 200-contact mechanism; 210-moving contact; 220-static contact; 300-tripping mechanism; 310-driving member; 320-driven member; 321-pull hook; 330-magnetic member; 331-U-shaped groove; 340-conductive member; 350-tripping member; 351-first tripping arm; 352-second tripping arm; 360-first reset member; 370-second reset member; 400-operating mechanism; 500-first wiring terminal; 600-arc extinguishing mechanism; 700-second wiring terminal; 800-electric operating mechanism; a-angle between the length direction of the tripping mechanism and the first direction; x-first direction; y-second direction. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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 are part of the embodiments of the present application, not all of the embodiments. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0032] In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0033] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] Driven by intelligent and automated high-tech, the smart home industry has entered a period of rapid development. The smart home industry is facing new challenges and opportunities in the transformation of technology, market and industry.
[0035] According to the function, the smart home can be divided into eight modules: entertainment system, security system, control system, lighting system, kitchen and bathroom appliance system, network and communication system, health care system, and indoor environment system. The eight modules work together to realize the whole house intelligence.
[0036] In this digital age, people are becoming more and more dependent on electricity. Whether in the home, industry or commercial fields, a stable and reliable power supply is essential. Among them, circuit breakers, as a protective device in the power system, can be used to protect various equipment in the power system from being damaged by overload and short circuit. They are widely used in power systems, industrial production and household activities.
[0037] However, there are some challenges in the design of circuit breakers in the prior art, especially in relation to the electromagnetic tripping structure and the thermal tripping structure. Generally, these two tripping structures are arranged on opposite sides of the contact mechanism 200, occupying a large space, which is not conducive to the miniaturization of the product. This design limits the application of circuit breakers in some scenarios, especially for applications with limited space.
[0038] In order to solve the above problems, one aspect of an embodiment of the present application provides a circuit breaker, including a housing 100, and a contact mechanism 200 and a tripping mechanism 300 sequentially installed on the housing 100 along a first direction x, the tripping mechanism 300 including a driving member 310 and a driven member 320 arranged on the housing 100, the driving member 310 is driven and cooperated with the contact mechanism 200 through the driven member 320, and the driving member 310 is used to drive the driven member 320 to move in a tripping direction, so as to drive the contact mechanism 200 to switch from a closed state to an open state;
[0039] When an overload fault occurs in the circuit breaker, the overload current flows through the driving member 310, causing the driving member 310 to bend after being heated, driving the driven member 320 to move in the tripping direction; when a short circuit fault occurs in the circuit breaker, the driven member 320 is attracted by the driving member 310 and moves in the tripping direction.
[0040] like Figure 1 and Figure 2 As shown, by sequentially installing the contact mechanism 200 and the tripping mechanism 300 along the first direction x inside the housing 100, the two cooperate with each other to realize the control of the circuit breaker state, and the orderly arrangement of the two improves the space utilization. In the design of the circuit breaker, the tripping mechanism 300 bears the key responsibility for the opening operation. The tripping mechanism 300 itself includes components such as the driving member 310 and the driven member 320, that is, the driving member 310 and the driven member 320 are compactly integrated on the same side of the contact mechanism 200, saving the occupied space, thereby reducing the overall size of the circuit breaker. In addition, the driving member 310 is driven by the driven member 320 to cooperate with the contact mechanism 200. When the circuit breaker fails, the driven member 320 is driven by the driving member 310 to move toward the tripping direction to drive the contact mechanism 200 to switch from the closed state to the open state, so that the circuit breaker can accurately cut off the current and effectively deal with various circuit abnormalities.
[0041] In general, by rethinking the layout of the circuit breaker's tripping mechanism 300, the driving component 310 and the driven component 320 are driven in coordination to form a compact and efficient system that can handle both the overload fault and the short-circuit fault of the circuit breaker. This not only effectively overcomes the problem of space occupation and meets the demand for small and efficient power equipment in different scenarios, but also provides comprehensive and reliable protection for the circuit.
[0042] In the embodiment of the present application, the driving member 310 is a bimetallic strip, which can also be used as a static iron core, and the driven member 320 is an armature. When a short circuit fault occurs in the circuit breaker, the driving member 310 is a static iron core, and the short circuit current flows through the static iron core to form a strong electromagnetic field. When the short circuit current reaches a certain value, a sufficiently large suction force will be generated in the static iron core, so that the armature is quickly attracted, that is, the armature moves in the tripping direction, and the whole process is fast, thereby driving the contact mechanism 200 to quickly switch from the closed state to the open state; when an overload fault occurs in the circuit breaker, the driving member 310 is a bimetallic strip, and the overload current flows through the bimetallic strip to generate heat, so that the bimetallic strip bends after being heated, thereby driving the armature to move in the tripping direction, so that the contact mechanism 200 switches from the closed state to the open state.
[0043] Alternatively, if Figure 1 and Figure 2 As shown, the tripping mechanism 300 also includes a magnetic member 330, which is used to enhance the magnetic field. In the embodiment of the present application, the magnetic member 330 is a magnetic yoke or a member made of magnetic material that can achieve this function. When a short circuit occurs in the circuit breaker, the magnetic member 330 can enhance the magnetic field strength, that is, increase the attraction of the static iron core to the armature, ensure that the armature moves quickly toward the tripping direction when a short circuit occurs in the circuit breaker, and improve the reliability of the tripping mechanism 300.
[0044] In the present application embodiment, Figure 3 As shown, the driving member 310 is fixedly installed on the housing 100, and the end of the driven member 320 that is away from the contact mechanism 200 is rotatably installed on the housing 100 through the first installation axis 110. Therefore, after the driven member 320 is driven by the driving member 310, the end thereof close to the contact mechanism 200 can be rotated in the tripping direction to drive the contact mechanism 200 to switch from the closed state to the open state. Of course, the present application does not limit the movable installation method of the driven member 320, and it can also be slidably installed on the housing 100.
[0045] In the design of the circuit breaker, the contact mechanism 200 is a core component inside the circuit breaker, which is responsible for realizing the connection and disconnection of the circuit. The layout of the contact mechanism 200 plays a key role in the performance and operating efficiency of the equipment. Optionally, the contact mechanism 200 includes a moving contact 210 and a stationary contact 220 arranged in sequence along the first direction x. This orderly arrangement can effectively realize the conduction and disconnection of the current. The cooperation between the moving contact 210 and the stationary contact 220 enables the circuit breaker to maintain the power supply of the circuit under normal working conditions, and quickly and reliably perform the disconnection operation when necessary, making the circuit connection and disconnection operation more precise and controllable. At the same time, the synergy between the tripping mechanism 300 and the contact mechanism 200 is also crucial. The tripping mechanism 300 is responsible for realizing the switching of the contact mechanism 200 from the closed state to the open state during the operation of the circuit breaker.
[0046] Alternatively, if Figure 4 As shown, the angle a between the length direction of the tripping mechanism and the first direction is limited to within 45°. For example, the angle a between the length direction of the tripping mechanism and the first direction can be 15°, 25°, 35°, etc. This design takes into account the flexibility of operation and the rational use of space.
[0047] First, the design with a smaller angle helps to achieve precise operation of the trip mechanism 300. The smaller angle allows the trip mechanism 300 to apply force more effectively to achieve the switching of the contact mechanism 200. The choice of this angle takes into account the mechanical characteristics of the trip mechanism 300 during operation, ensuring that the circuit breaker opening operation can be completed stably and reliably under various operating conditions. Secondly, the smaller angle also helps to make rational use of space. In modern power equipment, especially in scenarios with increasing requirements for miniaturization, the effective use of space has become crucial. By ensuring that the angle between the trip mechanism 300 and the contact mechanism 200 is minimized, the designer can better optimize the entire circuit breaker structure to maximize its performance within a limited space.
[0048] Therefore, the angle design of the contact mechanism 200 and the tripping mechanism 300 becomes a key consideration in the design of the circuit breaker. This design not only improves the flexibility of operation, allowing the circuit breaker to switch the working state more accurately, but also achieves a more reasonable layout in space utilization, ensuring that the circuit breaker can work stably and efficiently in various operating scenarios.
[0049] Alternatively, if Figure 1 As shown, in the entire circuit breaker system, in addition to the contact mechanism 200, the setting of the operating mechanism 400 is also crucial. The operating mechanism 400 is cleverly arranged in the housing 100 as a control center. This design drives the operating mechanism 400 through the tripping mechanism 300, and directly acts on the contact mechanism 200 through the operating mechanism 400, so that the contact mechanism 200 is switched from the closed state to the open state. The flexibility and accuracy of the operating mechanism 400 directly determine the performance of the circuit breaker under various operating conditions. Through the synergistic effect with the tripping mechanism 300, the operating mechanism 400 not only masters the overall control of the circuit breaker, but also ensures the reliable operation of the contact mechanism 200.
[0050] like Figure 1As shown, the operating mechanism 400 is located on a side of the tripping mechanism 300 close to the driven part 320, that is, the distance between the operating mechanism 400 and the driven part 320 is smaller than the distance to the driving part 310, and the operating mechanism 400 and the contact mechanism 200 are arranged along a second direction y perpendicular to the first direction x, and the projections of the operating mechanism 400 and the tripping mechanism 300 in the second direction y at least partially overlap. As can be seen from the foregoing, the tripping mechanism 300 and the contact mechanism 200 are arranged along the first direction x, and the layout of different elements along two directions optimizes the structure of the entire system, improves the stability and reliability of the circuit breaker under various operating conditions, and the arrangement of the operating mechanism 400, the tripping mechanism 300 and the contact mechanism 200 in the vertical direction helps to reduce the size of the circuit breaker along the first direction x, so that the circuit breaker can better adapt to scenarios with limited space.
[0051] Through the close cooperation of the contact mechanism 200, the operating mechanism 400 and the tripping mechanism 300, this circuit breaker design achieves high efficiency and controllability in complex operation processes, which not only helps to improve the overall performance of the power system, but also meets the modern needs for miniaturization of equipment and flexible use of space. Such innovative design will promote the development of circuit breaker technology and provide more intelligent and efficient electrical protection and control solutions for the power system.
[0052] In the overall design of the circuit breaker, in addition to the contact mechanism 200 and the operating mechanism 400, key connection terminals and arc extinguishing mechanisms 600 are also involved. The ingenious arrangement of these components is crucial to the functionality and safety of the circuit breaker.
[0053] like Figure 1 and Figure 2As shown, the circuit breaker further includes a first terminal 500, an arc extinguishing mechanism 600, and a second terminal 700 which are sequentially arranged in the housing 100 along the first direction x. The three are arranged in order along the first direction x, and the first terminal 500, the arc extinguishing mechanism 600, and the second terminal 700 are all located on the side of the tripping mechanism 300 away from the operating mechanism 400, that is, the distances from the first terminal 500, the arc extinguishing mechanism 600, and the second terminal 700 to the driven member 320 are all greater than the distances to the driving member 310, and the projections of the arc extinguishing mechanism 600 and the tripping mechanism 300 in the second direction y at least partially overlap. This layout takes into account the controllability of the circuit and the stability of operation. By placing these components on a specific side of the tripping mechanism 300, the circuit breaker can more flexibly respond to various working states during operation. At the same time, such an arrangement allows the various components in the circuit breaker to be arranged in order along the first direction x and the second direction y, reducing the overall size of the circuit breaker along a single direction, so that the device is more adaptable to the power system environment with limited space. The first terminal 500 is electrically connected to the second terminal 700 through the tripping mechanism 300 and the contact mechanism 200. Specifically, the first terminal 500 is electrically connected to the driving member 310, the driving member 310 is electrically connected to the static contact 220, and the moving contact 210 is electrically connected to the second terminal 700, so that the current can be effectively conducted inside the circuit breaker. The coordinated work of the tripping mechanism 300 and the contact mechanism 200 ensures that the circuit can be quickly and accurately cut off when needed. Such a design not only ensures the normal operation of the power system, but also improves the safety of the entire system.
[0054] In addition, the arc extinguishing mechanism 600 plays a vital role in the entire system. The arc extinguishing mechanism 600 corresponds to the contact mechanism 200, and the reasonable arrangement of their positions enables the arc generated during circuit breaking to be reliably and efficiently extinguished, which is crucial to the life and stability of the circuit breaker, especially in high-voltage circuits, ensuring the reliability and safety of the system.
[0055] like Figure 1As shown, the circuit breaker also includes an electric operating mechanism 800, which is used to control the operating mechanism 400 according to the instructions of the controller, so that the operating mechanism 400 controls the contact mechanism 200 to close and open the switch, the electric operating mechanism 800 and the operating mechanism 400 are arranged along the first direction x, and the electric operating mechanism 800 and the tripping mechanism 300 are arranged along the second direction y. The electric operating mechanism 800 is located on a side of the tripping mechanism 300 close to the driven component 320, that is, the distance from the electric operating mechanism 800 to the driven component 320 is smaller than the distance to the driving component 310. The electric operating mechanism 800 and the contact mechanism 200 are respectively located on both sides of the tripping mechanism 300 along the first direction x, and the projections of the electric operating mechanism 800 and the tripping mechanism 300 in the second direction y at least partially overlap. At the same time, combined with the above, it can be known that the tripping mechanism 300 and the contact mechanism 200 are arranged in the middle position of the circuit breaker along the first direction x, the electric operating mechanism 800 and the operating mechanism 400 are arranged along the first direction x, and are both located on the side of the tripping mechanism 300 close to the driven part 320, the first terminal 500, the arc extinguishing mechanism 600 and the second terminal 700 are arranged along the first direction x, and are both located on the side of the tripping mechanism 300 close to the driving part 310. Therefore, the various components in the entire circuit breaker are neatly arranged along the first direction x and the second direction y, which can effectively save the circuit breaker space and is conducive to the miniaturization of the circuit breaker.
[0056] In general, the design of the circuit breaker fully considers the synergy between various components. Through reasonable arrangement and layout, an efficient and reliable circuit control system is formed. This systematic design not only improves the performance of the circuit breaker, but also provides a solid guarantee for the normal operation of the power system.
[0057] Alternatively, if Figure 2 and Figure 3 As shown, the tripping mechanism 300 not only includes the aforementioned driving member 310, driven member 320 and magnetic member 330, but also includes an important component-conductive member 340, which is fixedly arranged in the housing 100 and has a key conductive function. In the embodiment of the present application, the conductive member 340 is fixedly installed in the housing 100 through the second installation shaft 120.
[0058] The design of the conductive member 340 is to achieve efficient conduction and distribution of electrical energy. One end of the conductive member 340 is electrically connected to the first terminal 500 to ensure that the current can smoothly enter the circuit breaker system, and the other end is respectively connected to the magnetic member 330 and the driving member 310, establishing a close connection between the conductive member 340 and other components of the tripping mechanism 300. This ingenious design enables the conductive member 340 to stably transmit current when the circuit breaker is in operation, and cooperate with other components to achieve the tripping operation when necessary. The conductive member 340 plays the role of a bridge for connecting and transmitting energy in the entire system. Through the close connection with the first terminal 500, the conductive member 340 introduces current into the system, laying the foundation for the normal operation of the entire circuit breaker. At the same time, the connection between the conductive member 340 and the magnetic member 330 and the driving member 310 enables these key components to work together, ensuring the stability and reliability of the circuit breaker under different working conditions.
[0059] Alternatively, if Figure 2 and Figure 3 As shown, the tripping mechanism 300 further includes a key component - a tripping member 350. In the embodiment of the present application, the tripping member 350 is rotatably installed in the housing 100 through the third installation shaft 130, and works in conjunction with the driven member 320 to play an important role. The driven member 320 realizes the movement of the tripping member 350 by driving and cooperating with the tripping member 350. In this process, the driven member 320 is accurately driven and its kinetic energy is transferred to the tripping member 350, so that the contact mechanism 200 switches from the closed state to the open state. This design not only takes into account speed and accuracy, but also takes into account the stability and reliability requirements in the circuit. The operation process of the entire tripping mechanism 300 can be understood as a coordinated dynamic system. When the driven member 320 is acted upon by the driving member 310, it drives the movement of the tripping member 350, and the movement of the tripping member 350 can drive the operating mechanism 400 to move, and directly transfer this kinetic energy to the contact mechanism 200. This series of actions forms an efficient and coordinated chain in the system, ensuring that the circuit breaker can reliably perform opening operations under various working conditions, and that the circuit breaker can quickly and reliably cut off the circuit when needed, providing a solid guarantee for the stability and safety of the power system.
[0060] Alternatively, if Figure 5 As shown, the tripping member 350 is provided with a first tripping arm 351 and a second tripping arm 352, and these two parts respectively bear different but equally important functions. Among them, the driven member 320 and the first tripping arm 351 achieve a close driving match. When the driven member 320 moves to abut against the first tripping arm 351, the driven member 320 can accurately drive the movement of the first tripping arm 351. This process is a key step in the tripping mechanism 300, which provides precise control for the switching of the entire contact mechanism 200.
[0061] At the same time, the second trip arm 352 cooperates with the contact mechanism 200 to form another important connection. Specifically, when the second driving arm moves to abut against the operating mechanism 400, the trip member 350 can drive the operating mechanism 400 to take action, thereby enabling the operating mechanism 400 to control the contact mechanism 200 to switch from the closed state to the open state. This coordination mechanism ensures that during the movement of the trip member 350, the contact mechanism 200 can correspondingly complete the switch from the closed state to the open state. Through the coordinated work of the second trip arm 352 and the contact mechanism 200, the entire system can operate in an efficient and reliable state, ensuring that the circuit can be quickly and accurately cut off under abnormal circumstances.
[0062] In general, the ingenious design of the first tripping arm 351 and the second tripping arm 352 in the tripping member 350 enables the tripping mechanism 300 of the circuit breaker to respond more accurately to the drive of the driven member 320, thereby realizing the rapid switching of the contact mechanism 200. This synergy constitutes the core of the circuit breaker operation and provides efficient and reliable circuit control for the power system.
[0063] like Figure 3 As shown, in the precise design of the tripping mechanism 300, a key component - the first reset member 360 is also included. This component is connected to the driven member 320 to form an interrelated system with the driven member 320. When the driven member 320 moves along the tripping direction, the first reset member 360 undergoes elastic deformation and stores elastic potential energy. This process is an important link in the tripping mechanism 300. Through this energy storage mechanism, the first reset member 360 has a tendency to drive the driven member 320 to move in a direction away from the tripping direction. Therefore, when the driven member 320 is driven to move and drives the contact mechanism 200 to open, at this time, the circuit is disconnected, the driving member 310 has no force on the driven member 320, and the driven member 320 is subjected to the force of the first reset member 360 and moves away from the tripping direction, thereby returning to the initial position and preparing for subsequent circuit protection.
[0064] Similarly, if Figure 3As shown, in the precise structure of the tripping mechanism 300, another important component is the second reset member 370. This key component is connected to the tripping member 350 and forms an interrelated system with the tripping member 350. When the tripping member 350 moves in the tripping direction, the second reset member 370 undergoes elastic deformation and stores elastic potential energy. This process is an important link in the tripping mechanism 300. Through this energy storage mechanism, the second reset member 370 obtains a tendency to drive the tripping member 350 to move in a direction away from the tripping direction. Therefore, when the tripping member 350 is driven to move and drives the contact mechanism 200 to open, at this time, the circuit is disconnected, the driving member 310 has no force on the driven member 320, and the driven member 320 has no force on the tripping member 350. The tripping member 350 is subjected to the force of the second reset member 370 and moves away from the tripping direction, thereby returning to the initial position and preparing for subsequent circuit protection.
[0065] like Figure 6 As shown, in the structural design of the circuit breaker, the position and design of the driver 310 also play a vital role. By arranging the driver 310 between the driven part 320 and the magnetic part 330, the gap between the driven part 320 and the magnetic part 330 is utilized, which can effectively save space. At the same time, in this design, the magnetic part 330 presents a notch, and this U-shaped groove 331 faces the driver 310. The U-shaped groove 331 of the magnetic part 330 is designed to enhance the magnetic field strength, so that when a short circuit occurs, the driver 310 can achieve efficient driving of the driven part 320 under the influence of the electromagnetic field, thereby improving the controllability of the system.
[0066] Alternatively, if Figure 7 As shown, a hook 321 is provided on one side of the driven member 320 close to the driving member 310 , and the driving member 310 is passed through the hook 321 . After the driving member 310 is deformed by heat, the driven member 320 is driven to move via the hook 321 .
[0067] The structural design of the circuit breaker further considers the details of the side of the driven part 320 close to the driving part 310, and in particular introduces the setting of a hook 321. The hook 321 is cleverly placed near the driven part 320, and the driving part 310 is inserted into the hook 321. The uniqueness of this layout is that the driving part 310 can drive the movement of the driven part 320 through the hook 321 when it is deformed by heat.
[0068] The principle of this design is to change the position of the hook 321 through the thermal deformation of the driving member 310, thereby affecting the movement of the driven member 320. When the driving member 310 is deformed by heat, this deformation will directly affect the position of the hook 321. Once the driving member 310 is deformed by heat, the hook 321 will be pulled, thereby transferring kinetic energy to the driven member 320 to achieve its movement. This intelligent design enables the circuit breaker to respond quickly and accurately when facing excessive current, effectively preventing potential dangers caused by system overload.
[0069] The introduction of the driving mechanism of the hook 321 further improves the intelligence level of the circuit breaker. Through the self-sensing and self-driving of the driving member 310, the system can realize the circuit breaking operation without external intervention, providing a stronger layer of safety guarantee for the automatic protection of the power system.
[0070] In general, the combination of the hook 321 and the drive member 310 enables the circuit breaker to more intelligently sense and respond to various situations during system operation. This design takes into account the self-protection needs of the system and provides an innovative and efficient solution for the safe and reliable operation of the power system.
[0071] On the other hand, an embodiment of the present application provides a power distribution equipment, including any of the above-mentioned circuit breakers. In the power system, one of the key components of the power distribution equipment is the circuit breaker. The design and performance of the circuit breaker are directly related to the safe and stable operation of the entire power system. Since the power distribution equipment adopts the above-mentioned circuit breaker, it also has the same beneficial effects as the circuit breaker, which will not be repeated here. Optionally, the embodiment of the present application can be used for: fire-fighting electricity: fire control room, fire pump, smoke exhaust facilities, fire elevators and their drainage pumps, fire emergency lighting, etc.; aisle lighting, duty lighting, guard lighting, obstacle sign lights; rail transit; security system power supply; electronic information room power supply; passenger elevator power; sewage pump; variable frequency speed regulation constant pressure water supply life pump (otherwise a secondary load); main office, conference room, general duty room, archives room.
[0072] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
[0073] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.
[0074] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.
[0075] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.
[0076] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.
[0077] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0078] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.
[0079] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A circuit breaker, characterized in that: The invention comprises a housing (100), and a contact mechanism (200) and a tripping mechanism (300) which are sequentially mounted on the housing (100) along a first direction (x); the tripping mechanism (300) comprises a driving member (310) and a driven member (320) which are arranged on the housing (100); the driving member (310) is driven and matched with the contact mechanism (200) via the driven member (320); the driving member (310) is used to drive the driven member (320) to move in a tripping direction, so as to drive the contact mechanism (200) to switch from a closed state to an open state; When an overload fault occurs in the circuit breaker, the overload current flows through the driving component (310), causing the driving component (310) to bend after being heated, thereby driving the driven component (320) to move in the tripping direction; When a short circuit fault occurs in the circuit breaker, the driven component (320) is attracted by the driving component (310) and moves toward the tripping direction.
2. The circuit breaker according to claim 1, characterized in that The circuit breaker further comprises an operating mechanism (400) arranged on the housing (100); the tripping mechanism (300) drives the contact mechanism (200) to switch from a closed state to an open state via the operating mechanism (400); the distance between the operating mechanism (400) and the driven component (320) is smaller than the distance between the operating mechanism (400) and the driving component (310); the operating mechanism (400) and the contact mechanism (200) are arranged along a second direction (y) perpendicular to the first direction (x); and the projections of the operating mechanism (400) and the tripping mechanism (300) in the second direction (y) at least partially overlap.
3. The circuit breaker according to claim 1 or 2, characterized in that: The circuit breaker further comprises an electric operating mechanism (800) arranged on the housing (100); the electric operating mechanism (800) and the tripping mechanism (300) are arranged along a second direction (y) perpendicular to the first direction (x); the distance between the electric operating mechanism (800) and the driven component (320) is smaller than the distance between the electric operating mechanism (800) and the driving component (310); the electric operating mechanism (800) and the contact mechanism (200) are respectively located on both sides of the tripping mechanism (300) along the first direction (x); and the projections of the electric operating mechanism (800) and the tripping mechanism (300) in the second direction (y) at least partially overlap.
4. The circuit breaker according to claim 1 or 2, characterized in that: The circuit breaker further comprises a first wiring terminal (500), an arc extinguishing mechanism (600) and a second wiring terminal (700) which are sequentially arranged on the housing (100) along the first direction (x); the first wiring terminal (500) is electrically connected to the second wiring terminal (700) via the tripping mechanism (300) and the contact mechanism (200); the arc extinguishing mechanism (600) corresponds to the contact mechanism (200); the distances from the first wiring terminal (500), the arc extinguishing mechanism (600) and the second wiring terminal (700) to the driven component (320) are all greater than the distances from the first wiring terminal (500), the arc extinguishing mechanism (600) and the second wiring terminal (700) to the driven component (320); and the projections of the arc extinguishing mechanism (600) and the tripping mechanism (300) in a second direction (y) perpendicular to the first direction (x) at least partially overlap.
5. The circuit breaker according to claim 4, characterized in that The tripping mechanism (300) further comprises a magnetic member (330) and a conductive member (340) arranged on the housing (100); one end of the conductive member (340) is electrically connected to the first terminal (500), and the other end is respectively connected to the magnetic member (330) and the driving member (310); an angle (a) between a length direction of the tripping mechanism (300) and the first direction (x) is less than or equal to 45°.
6. The circuit breaker according to claim 1 or 2, characterized in that: The tripping mechanism (300) further comprises a tripping member (350) arranged on the housing (100); the driven member (320) is drivingly matched with the tripping member (350); the driven member (320) drives the contact mechanism (200) to switch from a closed state to an open state via the tripping member (350).
7. The circuit breaker according to claim 6, characterized in that The tripping member (350) is provided with a first tripping arm (351) and a second tripping arm (352); the driven member (320) is drivingly matched with the first tripping arm (351), and the second tripping arm (352) is drivingly matched with the contact mechanism (200).
8. The circuit breaker according to claim 5, characterized in that The driving member (310) is located between the driven member (320) and the magnetic member (330); the magnetic member (330) is a U-shaped groove (331) with a notch facing the driving member (310); and the driving member (310) drives the driven member (320) to move along a groove depth direction.
9. The circuit breaker according to claim 1 or 2, characterized in that: A draw hook (321) is provided on one side of the driven part (320) close to the driving part (310), the driving part (310) is inserted through the draw hook (321), and the driving part (310) drives the driven part (320) to move via the draw hook (321) after being deformed by heat.
10. A power distribution device, characterized in that: Comprising a circuit breaker as claimed in any one of claims 1 to 9.