Moving contact mechanism, load switch and electricity meter

Abstract

The utility model provides a moving contact mechanism, a load switch and an ammeter, and relates to the technical field of power equipment, the moving contact mechanism comprises a first wiring terminal and a moving contact assembly, the first wiring terminal is provided with a first connecting part and a second connecting part which are connected in sequence, and the first connecting part and the moving contact assembly are in movable clamping connection to form a first conductive path; the second connecting part is flexibly connected with the moving contact assembly through the conductor to form a second conductive path. Through the synergistic effect of the first connecting part and the second connecting part, a dual conductive path is provided between the moving contact assembly and the first wiring terminal through clamping connection and flexible connection. According to the design, the conductive reliability and the transmission efficiency are effectively improved, and the vibration resistance and the service life of the device can be improved to a certain extent. Compared with a traditional single connection mode, the structure of the double conductive paths can better balance the requirements of the contact resistance and the mobility of the moving contact, thereby improving the stability and safety of the load switch.

Description

Technical Field

[0001] This application relates to the field of power equipment technology, and more specifically, to a moving contact mechanism, a load switch, and an electricity meter. Background Technology

[0002] A load switch is a switching device used to control electrical loads in a circuit. It is widely used in power systems, industrial production, and building facilities, among other fields. Its main function is to control the transmission of electrical energy by opening and closing circuits. The core structure of a load switch typically includes a moving contact connected to the incoming terminals and a stationary contact connected to the outgoing terminals. This design allows external power to be transmitted to the load through the load switch, thereby achieving circuit control.

[0003] However, in existing technologies, the connection methods between the incoming terminals and the moving contacts are relatively simple, typically employing flexible connections or clamp-type connections. When using flexible connections, a larger total cross-sectional area of ​​the conductor is usually required to ensure sufficient current carrying capacity in the circuit. However, a larger total cross-sectional area of ​​the conductor leads to greater resistance during the movement of the moving contact, affecting its flexibility and response speed. On the other hand, while using clamp-type connections can reduce the amount of conductor used, it can easily result in higher contact resistance, affecting power transfer efficiency. Utility Model Content

[0004] The purpose of this application is to provide a moving contact mechanism, a load switch, and an electricity meter to address the shortcomings of the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] This application provides a moving contact mechanism, including a first terminal block and a moving contact assembly. The first terminal block has a first connecting portion and a second connecting portion connected in sequence. The first connecting portion is movably clamped and connected to the moving contact assembly to form a first conductive path. The second connecting portion is flexibly connected to the moving contact assembly via a conductor to form a second conductive path.

[0007] Optionally, the moving contact assembly includes a moving contact bracket and a moving contact mounted on the moving contact bracket, a first connecting portion being movably clamped and connected to at least one side of the moving contact, and a second connecting portion being flexibly connected to the moving contact via a conductor.

[0008] Optionally, the moving contact assembly includes at least two moving contacts that rotate coaxially, the at least two moving contacts being spaced apart along their rotation axis, a first connecting portion being rotatably held between two adjacent moving contacts, and a second connecting portion being flexibly connected to at least one moving contact via a conductor.

[0009] Optionally, the second connecting part, the first connecting part and the movable contact assembly are sequentially connected to form a first U-shaped opening, and the second connecting part, the conductor and the movable contact assembly are sequentially connected to form a second U-shaped opening.

[0010] Optionally, the movable contact mechanism further comprises an elastic member, the elastic member being in contact with the first connecting part and / or the movable contact assembly respectively, and used for providing a clamping force for the first connecting part and the movable contact assembly.

[0011] Optionally, when the first connecting part is clamped between two adjacent movable contacts of the movable contact assembly, the elastic member is a U-shaped elastic piece, two sides of the U-shaped elastic piece being respectively in abutment with a side of the two movable contacts opposite to each other.

[0012] Optionally, the abutment end of the U-shaped elastic piece is an arc-shaped protrusion, and the U-shaped elastic piece is in abutment with the movable contact via the arc-shaped protrusion.

[0013] Optionally, one end of the conductor is welded to the second connecting part near the movable contact assembly, and the other end of the conductor is welded to the movable contact assembly near the second connecting part.

[0014] Optionally, the movable contact assembly is rotatably arranged, the conductor is a metal flexible wire, the connection position of the metal flexible wire with the second connecting part is arranged near the connection position of the second connecting part with the first connecting part, the connection position of the metal flexible wire with the movable contact assembly is arranged near the rotation center of the movable contact assembly, and the connection positions of the metal flexible wire are located in the first U-shaped opening.

[0015] The embodiment of the present application further provides a load switch, comprising a housing, an electromagnetic mechanism, a stationary contact and the movable contact mechanism of any one of the above, the movable contact assembly of the movable contact mechanism being movably mounted on the housing, the stationary contact being fixedly mounted on the housing, the movable contact assembly being arranged in cooperation with the stationary contact, the movable contact mechanism, the stationary contact and the electromagnetic mechanism being sequentially arranged along a first direction, and a coil former of the electromagnetic mechanism extending in a second direction as an axial direction, the first direction being perpendicular to the second direction.

[0016] The embodiment of the present application further provides an electric meter, comprising a mutual inductor and the load switch of the above, the mutual inductor and the electromagnetic mechanism of the load switch being arranged along a second direction.

[0017] The beneficial effects of the present application include:

[0018] The application provides a moving contact mechanism, a load switch and an electric meter, comprising a first connecting terminal and a moving contact assembly, the first connecting terminal has a first connecting part and a second connecting part connected in sequence, the first connecting part is movably clamped with the moving contact assembly to form a first conductive path, and the second connecting part is soft-connected with the moving contact assembly through a conductor to form a second conductive path. Through the cooperation of the first connecting part and the second connecting part, double conductive paths are provided between the moving contact assembly and the first connecting terminal through clamping connection and soft connection respectively. This design not only effectively improves the conductive reliability and transmission efficiency, but also improves the anti-vibration performance and service life of the device to a certain extent. Compared with the traditional single connection mode, this double conductive path structure can better balance the requirements of contact resistance and moving contact activity, thereby improving the stability and safety of the load switch. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 A structural schematic diagram of a moving contact mechanism provided by an embodiment of the application;

[0021] Figure 2 A structural schematic diagram of a moving contact mechanism provided by an embodiment of the application;

[0022] Figure 3 A structural schematic diagram of a moving contact mechanism provided by an embodiment of the application;

[0023] Figure 4 A structural schematic diagram of a moving contact mechanism provided by an embodiment of the application;

[0024] Figure 5 A structural schematic diagram of a moving contact mechanism provided by an embodiment of the application;

[0025] Figure 6 A structural schematic diagram of a load switch provided by an embodiment of the application;

[0026] Figure 7 A structural schematic diagram of a load switch provided by an embodiment of the application;

[0027] Figure 8 A structural schematic diagram of an electric meter provided by an embodiment of the application.

[0028] Icon: 10 - moving contact mechanism; 11 - first terminal; 111 - first connecting part; 112 - second connecting part; 12 - moving contact assembly; 121 - moving contact; 122 - moving contact support; 13 - conductor; 14 - first U-shaped opening; 15 - U-shaped spring; 151 - arc-shaped protrusion; 20 - housing; 30 - stationary contact; 40 - electromagnetic mechanism; 50 - connecting rod; 60 - mutual inductor; x - first direction; y - second direction. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. It should be noted that the various features in the embodiments of the present application can be combined with each other without conflict, and the combined embodiments are still within the protection scope of the present application.

[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] The load switch is a kind of switch device for controlling power load in the circuit, which is widely used in the field of power system, and realizes the control of power transmission by opening and closing the circuit. The core structure includes a moving contact connected with the incoming terminal and a static contact connected with the outgoing terminal. The connection mode of the incoming terminal and the moving contact in the prior art is relatively single, which is usually soft connection or clamping connection. Soft connection needs a larger total cross-section wire to ensure the overcurrent capacity, but increases the moving resistance of the moving contact; clamping connection is easy to cause the contact resistance to be too large, which affects the transmission efficiency.

[0036] In one aspect of the embodiment of the application, a moving contact mechanism 10 is provided, as shown in Figures 1 to 5 including a first wiring terminal 11 and a moving contact assembly 12, wherein the first wiring terminal 11 has a first connecting part 111 and a second connecting part 112 connected in sequence, the first connecting part 111 is movably clamped with the moving contact assembly 12 to form a first conductive path, and the second connecting part 112 is soft-connected with the moving contact assembly 12 through a conductor 13 to form a second conductive path.

[0037] Specifically, as shown in Figure 1 the first connecting part 111 is movably clamped with the moving contact assembly 12 to provide the first conductive path. This way can not only ensure that the movement of the moving contact assembly 12 does not affect the stability of the first wiring terminal 11, but also can ensure the close contact between the moving contact assembly 12 and the wiring terminal, thereby greatly reducing the contact resistance. The rigid characteristic of clamping connection makes the moving contact assembly 12 have high transmission efficiency during current conduction, avoiding the problem of increased moving resistance when relying solely on soft connection, and ensuring the flexibility and operation response speed of the moving contact assembly 12. The second connecting part 112 is soft-connected with the moving contact assembly 12 through the conductor 13 to provide the second conductive path. The advantage of soft connection is to provide certain flexible support for the movement of the moving contact assembly 12, thereby reducing friction loss and moving resistance, and the soft connection resistance is small, which can effectively reduce the total contact resistance of the circuit.

[0038] It should be understood that through the synergy between the first connecting part 111 and the second connecting part 112, effective current shunting can be achieved by using a double conduction path. The current flows into the movable contact assembly 12 through the first and second conduction paths respectively, not only reducing the contact resistance when the clamping connection is used alone, but also reducing the total cross-sectional requirement of the conductor 13, only a conductor 13 with a small total cross-section is required to meet the current carrying requirement, further improving the flexibility of the movable contact assembly 12, thereby significantly improving the conduction reliability and transmission efficiency. This structure can effectively improve the overall stability and safety of the mechanism, and to some extent, improve the anti-vibration performance and service life of the mechanism.

[0039] It should be noted that the number of movable contacts 121 in the movable contact assembly 12 is an important parameter in the design of the movable contact mechanism 10, which depends on the specific electrical system requirements and application scenarios. Different numbers of movable contacts 121 can achieve different electrical connection configurations, thereby meeting the specific requirements of the system. When only a simple single-loop connection is required in the electrical system, a single movable contact 121 can be selected. This design is suitable for some basic circuit configurations, such as load switches, circuit breakers, etc. For systems that need to implement double-loop or double-power switching, a design with double movable contacts 121 can be selected. This configuration is usually applied to situations where power switching requirements are high, in order to improve the reliability and safety of the system. In some large electrical systems, more circuit connection points may be required, so a multi-contact design can be used. The multi-contact configuration can flexibly meet the requirements of complex systems such as multi-loop, multi-power switching, etc. Therefore, the selection of the number of movable contacts 121 should consider the complexity, functional requirements, and safety of the electrical system, in order to meet the requirements of specific application scenarios.

[0040] Alternatively, when the number of movable contacts 121 in the movable contact assembly 12 is single, the movable contact assembly 12 includes a movable contact support 122 and a movable contact 121 mounted on the movable contact support 122. In this structure, the first connecting part 111 can be clamped and connected to at least one side of the movable contact 121. This clamping connection method can ensure close contact between the movable contact 121 and the first connecting terminal 11, forming a stable first conduction path, reducing contact resistance, and improving the reliability of current transmission. In addition, the movable clamping method of the first connecting part 111 can provide a certain flexibility, making it easier to adjust the movable contact 121 during closing or opening, without affecting the stability of the first connecting terminal 11, improving the overall operation performance of the device.

[0041] Meanwhile, the second connecting part 112 is connected to the movable contact 121 through the conductor 13 to form a second conductive path and realize current shunt function. The introduction of soft connection not only increases the redundancy of the conductive path, but also provides additional movement space for the movable contact 121 in different working states, reduces the activity resistance, and ensures the smooth transmission of current in the movable contact assembly 12.

[0042] In general, the cooperation of the first connecting part 111 and the second connecting part 112 can not only meet the diversified needs of the electrical system, but also optimize the transmission path of the current, improve the reliability of the contact, and reduce the contact resistance. In addition, this design not only reduces the activity resistance, but also prolongs the service life of the movable contact mechanism 10, making it have higher safety and stability in application scenarios such as load switches.

[0043] Optionally, as shown in Figure 3 and Figure 4 When the movable contact assembly 12 includes at least two movable contacts 121, the at least two movable contacts 121 are mounted on the same movable contact bracket 122, and the at least two movable contacts 121 and the movable contact bracket 122 are coaxially rotatably mounted on the mounting shaft. The movable contact bracket 122 drives the at least two movable contacts 121 to rotate around the mounting shaft to realize the closing or opening operation. The at least two movable contacts 121 are arranged along the rotation axis to ensure that there is enough space between the adjacent two movable contacts 121, and to make each movable contact 121 independent of each other during switching to avoid interference with each other. The first connecting part 111 is designed to be clamped between the adjacent two movable contacts 121 to form a first conductive path and ensure that the first connecting part 111 remains stable when the movable contact 121 rotates. The first connecting part 111 uses a clamping connection method to make the two movable contacts 121 contact and conduct electricity with the first connecting terminal 11, so that the current can flow through the adjacent movable contacts 121 at the same time. The second connecting part 112 is connected to the at least one movable contact 121 through the conductor 13 to form a second conductive path, thereby making the at least one movable contact 121 have a double conductive path.

[0044] Specifically, when there are two movable contacts 121, the first connecting part 111 of the first connecting terminal 11 is clamped between the two movable contacts 121 and contacts the two movable contacts 121 at the same time to provide a first conductive path for the two movable contacts 121. At this time, the second connecting part 112 can be connected to only one of the two movable contacts 121 through the conductor 13 to realize a double conductive path for the movable contact 121, while the other movable contact 121 only conducts current through the first conductive path. This design allows one movable contact 121 to have a double conductive path advantage, increasing its contact reliability and reducing contact resistance. On the other hand, the second connecting part 112 can also be connected to the two movable contacts 121 respectively to realize a structure in which both movable contacts 121 have a double conductive path.

[0045] When the number of moving contacts 121 increases to three, two first connecting terminals 11 can be provided, and the first connecting portion 111 of each first connecting terminal 11 is clamped between two adjacent moving contacts 121, thereby providing the three moving contacts 121 with first conductive paths at the same time. The second connecting portion 112 can be soft-connected to only one of the moving contacts 121 through the conductor 13, ensuring that the moving contact 121 has a double conductive path, while the remaining two moving contacts 121 only conduct electricity through the first conductive path. In addition, the second connecting portion 112 can also be soft-connected to the three moving contacts 121 respectively, thereby providing the three moving contacts 121 with a configuration of double conductive paths. This configuration can further improve the conductive reliability, enabling each moving contact 121 to achieve current shunting and stable transmission, meeting higher current conduction requirements, and also enhancing the anti-shock and impact performance of the overall device.

[0046] Alternatively, as shown in Figure 1 and Figure 2 , the second connecting portion 112, the first connecting portion 111, and the moving contact assembly 12 are sequentially connected to form a first U-shaped opening 14. The structure of the first U-shaped opening 14 not only optimizes the spatial distribution between the first connecting terminal 11 and the moving contact assembly 12, but also makes the current flowing through the first connecting terminal 11 and the moving contact assembly 12 in opposite directions, thereby generating a Lorentz force to ensure the stability of the performance of the moving contact assembly 12. In this structure, the second connecting portion 112 and the moving contact assembly 12 respectively constitute two sides of the first U-shaped opening 14, and the first connecting portion 111 serves as the bottom of the first U-shaped opening 14.

[0047] In addition, the second connecting portion 112, the conductor 13, and the moving contact assembly 12 are sequentially connected to form a second U-shaped opening. The second connecting portion 112 and the moving contact assembly 12 respectively constitute two sides of the second U-shaped opening, and the conductor 13 serves as the bottom of the second U-shaped opening. Among them, the conductor 13 is located below the first connecting portion 111. This design can reasonably utilize the space between the first connecting terminal 11 and the moving contact assembly 12, thereby effectively reducing the overall occupied space of the moving contact mechanism 10, and reducing the mutual interference with other components when the moving contact assembly 12 is driven to move, thereby improving the installation and conductive effect of the conductor 13. It should be understood that when the moving contact assembly 12 is separated from the static contact 30, the conductor 13 is arranged in a curve to leave enough deformation amount for subsequent closing of the moving contact assembly 12 and the static contact 30.

[0048] Optionally, the moving contact mechanism 10 further includes an elastic element that contacts the first connecting portion 111 and / or the moving contact assembly 12 respectively, providing a clamping force for holding the first connecting portion 111 and the moving contact assembly 12 together. The core function of the elastic element in the structure is to provide a stable clamping force, ensuring close contact between the first connecting portion 111 and the moving contact assembly 12. This design not only enhances the connection strength between the two but also ensures the conductivity and connection stability of the moving contact assembly 12 during operation, thereby reducing contact resistance and improving conductivity reliability.

[0049] Specifically, the elastic element achieves automatic adjustment by applying a continuous clamping force to the first connecting portion 111 and the moving contact assembly 12. As the operating frequency of the moving contact assembly 12 increases, the contact surface may gradually loosen due to wear, but the elastic element can automatically compensate for the clamping force during this process, ensuring that the contact between the first connecting portion 111 and the moving contact assembly 12 remains tight, thereby maintaining good conductivity during long-term use. This automatic adjustment characteristic of the elastic element can also reduce arcing caused by loosening or poor contact, thereby extending the service life of the moving contact mechanism 10.

[0050] Furthermore, the elastic element can buffer the impact force generated during operation to a certain extent, making the movement of the moving contact assembly 12 smoother and reducing the impact of mechanical vibration on the system. This buffering effect can improve the vibration resistance of the device and help ensure the operational stability of the moving contact assembly 12 in the load switch, maintaining a reliable conductive state even under frequent switching conditions.

[0051] Optionally, such as Figures 3 to 5 As shown, when the first connecting portion 111 is rotatably clamped between two adjacent moving contacts 121 of the moving contact assembly 12, the elastic element is a U-shaped spring sheet 15, with its two sides abutting against the opposite sides of the two moving contacts 121 located at both ends. This arrangement of the U-shaped spring sheet 15 can achieve multi-point contact stability through a simple structure, allowing each moving contact 121 to effectively conduct electricity.

[0052] Specifically, when the plurality of moving contacts 121 are arranged in a spaced manner on the moving contact assembly 12, each first connecting portion 111 is clamped between two adjacent moving contacts 121 to ensure the connection integrity of the conductive path. The two sides of the U-shaped spring 15 abut against the opposite sides of the two end moving contacts 121, which can ensure that the two ends of the spring can generate uniform elastic force on the moving contacts 121, so that the first connecting portion 111 can be stably clamped between the moving contacts 121. Moreover, the elastic design of the U-shaped spring 15 has an automatic compensation function, which can adapt to the changes through elastic deformation when the moving contact assembly 12 is slightly displaced due to frequent operation or temperature changes, etc., so as to always maintain the close contact between the moving contacts 121 and the first connecting portion 111. In addition, the bottom side of the U-shaped spring 15 connects the two ends together to form an overall elastic structure, which can not only enhance the stability of the spring, but also ensure the durability of the elastic force in long-term use.

[0053] Optionally, as shown in Figure 3 and Figure 4 , the abutting end of the U-shaped spring 15 is designed as an arc-shaped protrusion 151, and the U-shaped spring 15 abuts against the moving contact 121 through the arc-shaped protrusion 151, thereby enhancing the contact effect with the moving contact 121. The design of the arc-shaped protrusion 151 makes the U-shaped spring 15 present a flexible contact surface in the process of contacting the moving contact 121, ensuring more stable and uniform pressure distribution.

[0054] Specifically, the arc-shaped protrusion 151 end of the U-shaped spring 15 is in slight pressure contact with the moving contact 121, and realizes a soft and reliable clamping force in the opening and closing process of the moving contact 121. The shape of the arc-shaped protrusion 151 can provide continuous elastic compensation when the moving contact 121 is slightly displaced or vibrated, so as to ensure that the moving contact 121 always maintains a good conductive state with the first connecting portion 111 during operation. Such flexible connection can also reduce the mechanical loss caused by friction of the mechanism, further improving the conductive performance and overall stability of the moving contact assembly 12.

[0055] In addition, the design of the arc-shaped protrusion 151 has a self-adaptive adjustment function, which can adapt to the changes through elastic deformation when the moving contact 121 is subjected to external force or slightly displaced during operation, thereby avoiding the interruption of electric current caused by poor contact. This self-adaptive feature can significantly improve the conductive reliability between the U-shaped spring 15 and the moving contact 121, especially in the case of frequent switching of the load switch, which can effectively prevent the generation of electric arc phenomenon and ensure the safe operation of the equipment.

[0056] Optionally, one end of the conductor 13 is welded to the second connecting portion 112 near the moving contact assembly 12, and the other end of the conductor 13 is welded to the moving contact assembly 12 near the second connecting portion 112, so as to achieve a soft connection between the second connecting portion 112 and the moving contact assembly 12.

[0057] Specifically, one end of the conductor 13 is fixed to the second connecting portion 112 near the moving contact assembly 12 by welding, which ensures a stable conduction path during contact and reduces the phenomenon of increased resistance caused by poor contact. The other end is also connected to the moving contact assembly 12 near the second connecting portion 112 by welding, which ensures reliable conduction contact between the conductor 13 and the moving contact assembly 12. This double-end welding method not only is firm and reliable, but also can adapt to small amplitude movements during the opening and closing of the moving contact 121, thereby further reducing the wear of the connection site and prolonging the service life of the equipment. In addition, welding the conductor 13 to the side of the second connecting portion 112 opposite the moving contact assembly 12 can shorten the total length of the conductor 13, reduce the resistance, and reduce the space required for the rotation of the moving contact assembly 12.

[0058] Optionally, as shown in Figure 1 the moving contact assembly 12 is arranged to rotate, the conductor 13 is a metal flexible wire, the connection position of the metal flexible wire to the second connecting portion 112 is arranged near the connection position of the second connecting portion 112 to the first connecting portion 111, the connection position of the metal flexible wire to the moving contact assembly 12 is arranged near the rotation center of the moving contact assembly 12, and the connection position of the metal flexible wire is located within the first U-shaped opening 14, so as to optimize the length and range of movement of the metal flexible wire.

[0059] Specifically, the connection position of the metal flexible wire to the second connecting portion 112 is designed to be near the connection position of the second connecting portion 112 to the first connecting portion 111. This layout not only simplifies the path of the metal flexible wire, but also reduces the length requirement of the metal flexible wire, effectively reducing the resistance and transmission loss of the wire, making the metal flexible wire more efficient in the conduction path. In addition, the connection position of the metal flexible wire to the moving contact assembly 12 is near the rotation center of the moving contact assembly 12. This position is set based on the movement characteristics of the moving contact assembly 12. When the moving contact assembly 12 moves around the rotation center, the metal flexible wire only needs to bend and move with a small amplitude due to its connection position close to the rotation center, which can significantly reduce the stress accumulation and fatigue wear of the metal flexible wire. In this way, the metal flexible wire can maintain long-term stability during frequent operation of the moving contact 121, which helps to improve the overall durability of the system. In addition, the connection position of the metal flexible wire to the second connecting portion 112 and the connection position of the metal flexible wire to the moving contact assembly 12 are both located within the first U-shaped opening 14, so as to further optimize the length and range of movement of the metal flexible wire and achieve efficient and reasonable space utilization.

[0060] In addition, the metal flexible wire has excellent electrical conductivity and high flexibility, which can flexibly bend during the movement of the movable contact assembly 12, avoiding stress concentration and mechanical fatigue caused by the connection of the rigid conductor 13. Due to the flexibility of the metal flexible wire, it can naturally adjust its position while conducting electricity along with the movement of the movable contact assembly 12, avoiding the stress generated by the operation of the movable contact 121 directly transmitted to the connection site. This buffering effect can reduce the accumulation of mechanical stress of the movable contact assembly 12 due to frequent operation, ensuring the stability of the system in long-term use. At the same time, the flexible connection of the metal flexible wire helps to reduce the vibration transmission of the conductor 13, improve the anti-vibration performance of the device, and is more suitable for high-frequency switching application scenarios.

[0061] Through this compact connection layout, the length and movement range of the conductor 13 are reasonably controlled, avoiding excessive bending or swinging of the conductor 13 during movement due to excessive length. This design not only helps to reduce the obstruction of the conductor 13 to the movement of the movable contact assembly 12, but also improves the fatigue resistance of the conductor 13, effectively prolonging the service life of the connection site.

[0062] The embodiments of the present application also provide a load switch, as shown in Figure 6 and Figure 7 , which comprises a housing 20, an electromagnetic mechanism 40, a stationary contact 30, and any of the above movable contact mechanisms 10, the movable contact assembly 12 of the movable contact mechanism 10 is movably installed in the housing 20, the stationary contact 30 is fixedly installed in the housing 20, the movable contact assembly 12 is arranged in cooperation with the stationary contact 30, the movable contact mechanism 10, the stationary contact 30, and the electromagnetic mechanism 40 are arranged in sequence along a first direction x, the coil frame of the electromagnetic mechanism 40 extends in a second direction y as the axial direction, the first direction x is perpendicular to the second direction y, realizing the rational use of the internal space of the load switch and reducing the volume of the load switch. Since the load switch adopts the above-mentioned movable contact mechanism 10, it also has the same beneficial effects as the movable contact mechanism 10, which will not be repeated here.

[0063] Optionally, the load switch further comprises a second wiring terminal electrically connected with the stationary contact 30, which can complete the conduction path of the current from the first wiring terminal 11 to the second wiring terminal when the movable contact assembly 12 and the stationary contact 30 are closed, thereby realizing the closed loop of power transmission.

[0064] Optionally, as shown in Figure 6 and Figure 7 , the electromagnetic mechanism 40 drives the movable contact assembly 12 and the stationary contact 30 to close or open through the connecting rod 50.

[0065] The embodiments of the present application also provide a power meter, as shown in Figure 8As shown, the load switch includes the transformer 60 and the electromagnetic mechanism 40 of the load switch arranged along the second direction y.

[0066] The power distribution equipment can be at least one of a distribution box, a cable, a power distribution cabinet, a motor, a switch socket, a lamp, an air conditioner, an electric water heater, an electric meter, a video camera, a telephone, a computer, etc. The power distribution equipment can use the movable contact mechanism 10 and / or the load switch to achieve intelligent management, but is not limited to the above intelligent management of the power distribution equipment, and can also be used in non-intelligent power distribution equipment in traditional industries.

[0067] The power distribution equipment can be at least one of a distribution box, a cable, a power distribution cabinet, a motor, a switch socket, a lamp, an air conditioner, an electric water heater, an electric meter, a video camera, a telephone, a computer, etc. The power distribution equipment can use the movable contact mechanism 10 and / or the load switch to achieve intelligent management, but is not limited to the above intelligent management of the power distribution equipment, and can also be used in non-intelligent power distribution equipment in traditional industries.

[0068] Optionally, the embodiments of the present application can be used for: fire-fighting power: fire control room, fire pump, smoke control and exhaust facilities, fire elevator and its drainage pump, fire emergency lighting, etc. Level one; walkway lighting, duty lighting, security lighting, obstacle marker light; rail transit; security system power supply; electronic information machine room power supply; passenger elevator power; sewage pump; variable frequency speed regulation constant pressure water supply life pump (otherwise, secondary load); main office, conference room, general duty room, archive room.

[0069] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A moving contact mechanism, characterized by, The first connecting terminal (11) and the movable contact assembly (12) are sequentially connected, the first connecting terminal (11) is movably clamped with the movable contact assembly (12) to form a first conductive path, and the second connecting terminal (112) is movably connected with the movable contact assembly (12) through the conductor (13) to form a second conductive path.

2. The movable contact mechanism according to claim 1, characterized in that, The movable contact assembly (12) includes a movable contact support (122) and a movable contact (121) mounted on the movable contact support (122), the first connecting terminal (111) is movably clamped with at least one side of the movable contact (121), and the second connecting terminal (112) is movably connected with the movable contact (121) through the conductor (13).

3. The movable contact mechanism according to claim 1, characterized in that, The movable contact assembly (12) includes at least two movable contacts (121) coaxially rotating, the at least two movable contacts (121) are arranged along the rotation axis, the first connecting terminal (111) is clamped between the adjacent two movable contacts (121), and the second connecting terminal (112) is movably connected with at least one movable contact (121) through the conductor (13).

4. The movable contact mechanism according to any one of claims 1 to 3, characterized in that The second connecting terminal (112), the first connecting terminal (111) and the movable contact assembly (12) are sequentially connected to form a first U-shaped opening (14), and the second connecting terminal (112), the conductor (13) and the movable contact assembly (12) are sequentially connected to form a second U-shaped opening.

5. The movable contact mechanism according to claim 4, characterized in that The movable contact mechanism (10) further includes an elastic member in contact with the first connecting terminal (111) and / or the movable contact assembly (12) respectively, for providing a clamping force of the first connecting terminal (111) and the movable contact assembly (12).

6. The movable contact mechanism according to claim 5, characterized in that When the first connecting terminal (111) is clamped between the adjacent two movable contacts (121) of the movable contact assembly (12), the elastic member is a U-shaped spring (15), and two sides of the U-shaped spring (15) are respectively in abutment with the opposite sides of the two movable contacts (121) at both ends.

7. The movable contact mechanism according to claim 4, characterized in that, One end of the conductor (13) is welded to the second connecting terminal (112) close to one side of the movable contact assembly (12), and the other end of the conductor (13) is welded to the movable contact assembly (12) close to the second connecting terminal (112).

8. The movable contact mechanism according to claim 7, characterized in that The movable contact assembly (12) is rotatably arranged, the conductor (13) is a metal flexible wire, the connection position of the metal flexible wire and the second connecting terminal (112) is arranged close to the connection position of the second connecting terminal (112) and the first connecting terminal (111), the connection position of the metal flexible wire and the movable contact assembly (12) is arranged close to the rotation center of the movable contact assembly (12), and the connection position of the metal flexible wire is located in the first U-shaped opening (14).

9. A load break switch characterized by The load switch comprises a shell (20), an electromagnetic mechanism (40), a static contact (30) and the movable contact mechanism (10) as claimed in any one of claims 1 to 8, the movable contact assembly (12) of the movable contact mechanism (10) is movably mounted on the shell (20), the static contact (30) is fixedly mounted on the shell (20), the movable contact assembly (12) is arranged in cooperation with the static contact (30), the movable contact mechanism (10), the static contact (30) and the electromagnetic mechanism (40) are sequentially arranged along a first direction (x), the coil former of the electromagnetic mechanism (40) extends in a second direction (y) as an axial direction, and the first direction (x) is perpendicular to the second direction (y).

10. An electricity meter characterized by The load switch comprises a mutual inductor (60) and the load switch as claimed in claim 9, and the mutual inductor (60) is arranged along the second direction (y) with the electromagnetic mechanism (40) of the load switch.

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