Load switch and electricity meter

Abstract

The utility model discloses a load switch and an ammeter, and relates to the technical field of low-voltage apparatuses. The load switch comprises a pushing system, a contact system and a wiring end assembly which are sequentially arranged along a first direction, the contact system comprises a moving contact and a static contact, the wiring end assembly comprises a moving contact wiring end and a static contact wiring end which are sequentially arranged along a second direction, the moving contact wiring end is connected with the moving contact, the static contact wiring end is connected with the static contact, and the moving contact wiring end is connected with the static contact. The first end of the moving contact is fixed relative to the fixed contact, the second end of the moving contact moves relative to the first end, the second end is provided with a moving contact, the fixed contact is provided with a fixed contact, the fixed contact is located on the side, close to the pushing system, of the moving contact, and the pushing system is used for driving the moving contact to move so that the moving contact can be combined with or separated from the fixed contact. The load switch can solve the problems of large assembly space occupation and poor applicability caused by unreasonable layout of the load switch in the prior art.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a load switch and an electricity meter. Background Technology

[0002] A load switch typically includes components such as a moving spring, a moving contact, a moving magnet, a stationary spring, a stationary contact, and a stationary magnet. When the moving and stationary contacts are connected, a magnetic attraction force is generated between the moving and stationary magnets, which acts on the moving spring, thus helping to maintain the closed state of the moving and stationary contacts.

[0003] To provide a larger contact gap, existing load switches typically employ a layout where the armature assembly, rotating parts, and contact system are arranged sequentially in the same direction. This layout results in larger dimensions along the arrangement direction and occupies more assembly space. Without adjusting the layout or structure of other components within the meter or other electrical appliances, it is difficult to use this type of load switch. Therefore, there is an urgent need for a load switch product with a more rational layout, less assembly space requirements, and better applicability. Utility Model Content

[0004] The purpose of this application is to provide a load switch and meter that can solve the problems of large assembly space occupation and poor applicability of load switches in the prior art due to unreasonable layout.

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

[0006] A first aspect of this application provides a load switch, including a push system, a contact system, and a terminal assembly arranged sequentially along a first direction. The contact system includes a moving contact and a stationary contact. The terminal assembly includes a moving contact terminal and a stationary contact terminal arranged sequentially along a second direction perpendicular to the first direction. The moving contact terminal is connected to the moving contact, and the stationary contact terminal is connected to the stationary contact. A first end of the moving contact is fixed relative to the stationary contact, and a second end of the moving contact is movable relative to the first end. A moving contact point is provided on the second end of the moving contact, and a stationary contact point is provided on the stationary contact. The stationary contact point is located on the side of the moving contact point closer to the push system. The push system is used to drive the moving contact to move, so that the moving contact point engages or disengages with the stationary contact point. This load switch can solve the problems of large assembly space occupation and poor applicability caused by unreasonable layout of existing load switches.

[0007] As one possible implementation, the contact direction of the moving contact and the stationary contact is parallel to the first direction, or there is an angle between the contact direction of the moving contact and the stationary contact and the first direction.

[0008] As one possible implementation, a connector is also provided on the side of the moving contact where the moving contact point is located. The connector is used to connect the pushing system to the moving contact to drive the moving contact to open and close.

[0009] In one possible implementation, the connection point between the pushing system and the moving contact is located on the side of the moving contact away from the first end of the moving contact, or the connection point between the pushing system and the moving contact is located on the side of the moving contact closer to the first end of the moving contact.

[0010] In one possible implementation, the contact system further includes a stationary contact lead-out piece, which includes a first lead-out section and a second lead-out section. The stationary contact, the first lead-out section, the second lead-out section, and the stationary contact terminal are connected in sequence. The stationary contact extends along a third direction perpendicular to both the first and second directions. The first lead-out section is located on a first side of the moving contact along the third direction. The stationary contact terminal extends along the first direction. Alternatively, the second lead-out section extends along the second direction, or the second lead-out section extends along the third direction.

[0011] As one possible implementation, the contact system further includes a third lead-out section, through which the stationary contact is connected to the stationary contact terminal. The stationary contact extends along the second direction, and both the third lead-out section and the stationary contact terminal extend along the first direction. The third lead-out section is located on the side of the moving contact away from the first end of the moving contact along the second direction.

[0012] As one possible implementation, the contact system further includes a moving contact lead-out piece, which includes a first segment, a second segment, and a third segment connected in sequence. The first segment is connected to the first end of the moving contact via a flexible member. The first segment and the stationary contact are located on the same side of the moving contact. The second segment extends along the first direction. The third segment is connected to the terminal of the moving contact. When the circuit is closed, at least a portion of the moving contact is located between the first segment and the third segment along the first direction. The current flow direction through the first segment is opposite to the current flow direction through the third segment.

[0013] In one possible implementation, the driving system includes a magnetic circuit assembly, an armature assembly, and a transmission component. The armature assembly is connected to the moving contact via the transmission component. The magnetic circuit assembly drives the armature assembly to move and, via the transmission component, moves the moving contact closer to or away from the stationary contact. The magnetic circuit assembly includes a coil and a yoke. The axial direction of the coil is parallel to the first direction, or the axial direction of the coil is parallel to the second direction.

[0014] As one possible implementation, a connecting member is also provided on the side of the moving contact where the moving contact point is located. The first end of the transmission member is hinged to the connecting member, and the second end is movably connected to the armature assembly to provide contact overtravel for the moving contact.

[0015] In one possible implementation, there is one moving contact and one stationary contact. The second end of the moving contact is driven by the transmission member to rotate relative to the first end of the moving contact, so that the second end of the moving contact moves closer to or further away from the stationary contact.

[0016] As one possible implementation, the contact system further includes at least one magnetizing element for increasing the contact pressure between the moving contact and the stationary contact.

[0017] As one possible implementation, when the number of magnetizing elements is one, the magnetizing element is located on one side of the moving contact along the first direction, or the magnetizing element is located on one side of the moving contact along a third direction that is perpendicular to both the first direction and the second direction.

[0018] As one possible implementation, when the number of magnetizing elements is two, the two magnetizing elements are respectively located on opposite sides of the moving contact along the first direction, or the two magnetizing elements are respectively located on opposite sides of the moving contact along a third direction that is perpendicular to both the first direction and the second direction.

[0019] As one possible implementation, it also includes an arc-extinguishing component, which is disposed on the second side of the moving contact along a third direction perpendicular to both the first and second directions, and / or disposed on one side of the first end of the moving contact along the second direction.

[0020] A second aspect of this application provides an electricity meter including the aforementioned load switch. This load switch can solve the problems of existing load switches having large assembly space requirements and poor applicability due to unreasonable layout.

[0021] The beneficial effects of the embodiments of this application include:

[0022] The load switch includes a drive system, a contact system, and a terminal assembly arranged sequentially along a first direction. The contact system includes a moving contact and a stationary contact. The terminal assembly includes a moving contact terminal and a stationary contact terminal arranged sequentially along a second direction perpendicular to the first direction. The moving contact terminal is connected to the moving contact, and the stationary contact terminal is connected to the stationary contact. The first end of the moving contact is fixed relative to the stationary contact, while the second end of the moving contact is movable relative to the first end. A moving contact point is provided on the second end of the moving contact, and a stationary contact point is provided on the stationary contact. The stationary contact point is located on the side of the moving contact closer to the drive system. The drive system is used to drive the moving contact to move, so that the moving contact point engages or disengages with the stationary contact point. The load switch provided in this application, by rationally arranging the positional relationship of the drive system, the contact system, and the terminal assembly along two mutually perpendicular directions (i.e., the first direction and the second direction), makes the spatial distribution of each component more compact. Compared to the existing layout where components are arranged sequentially in the same direction, the layout provided in this application effectively utilizes the internal space of the load switch, avoiding space waste and reducing the space required for assembly. The compact layout of the various components within the load switch allows it to be used in different application scenarios, especially in space-constrained environments, making it easier to install and use. For example, in electronic devices or electrical systems with strict size requirements, the load switch provided in this application can better adapt to the limitations of its internal space without being too large to install or affecting the normal operation of other components. Therefore, this load switch has wider applicability in different environments and equipment, meeting the needs of more users. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is one of the structural schematic diagrams of the load switch provided in the first embodiment of this application;

[0025] Figure 2 This is a second schematic diagram of the structure of the load switch provided in the first embodiment of this application;

[0026] Figure 3 This is the third schematic diagram of the structure of the load switch provided in the first embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the contact system and terminal assembly provided in the first embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the moving contact and the moving contact terminal provided in the first embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the stationary contact and the stationary contact terminal provided in the first embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the contact system and arc extinguishing assembly provided in the first embodiment of this application;

[0031] Figure 8 This is one of the structural schematic diagrams of the load switch provided in the second embodiment of this application;

[0032] Figure 9 This is a second schematic diagram of the structure of the load switch provided in the second embodiment of this application;

[0033] Figure 10 This is a schematic diagram of the structure of the load switch provided in the third embodiment of this application;

[0034] Figure 11 This is a schematic diagram of the structure of the load switch provided in the fourth embodiment of this application.

[0035] Icons: 100-Load switch; 10-Drive system; 11-Magnetic circuit assembly; 111-Coil; 112-Yoke; 12-Armature assembly; 13-Transmission component; 20-Contact system; 21-Moving contact; 211-Moving point; 212-Connector; 213-First section; 214-Second section; 215-Third section; 22-Stationary contact; 221-Stationary contact; 222-First lead-out section; 223-Second lead-out section; 224-Third lead-out section; 23-Magnetic enhancement component; 30-Terminal assembly; 31-Moving contact terminal; 32-Stationary contact terminal; 90-Arc extinguishing assembly; y-First direction; x-Second direction; z-Third direction. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Please refer to the reference. Figures 1 to 11This application provides a load switch 100, including a push system 10, a contact system 20, and a terminal assembly 30 arranged sequentially along a first direction y. The contact system 20 includes a moving contact 21 and a stationary contact 22. The terminal assembly 30 includes a moving contact terminal 31 and a stationary contact terminal 32 arranged sequentially along a second direction x perpendicular to the first direction y. The moving contact terminal 31 is connected to the moving contact 21, and the stationary contact terminal 32 is connected to the stationary contact 22. The first end of the moving contact 21 and the stationary contact 22 are fixed relative to each other, and the second end of the moving contact 21 is movable relative to the first end of the moving contact 21. A moving contact 211 is provided on the second end of the moving contact 21, and a stationary contact 221 is provided on the stationary contact 22. The stationary contact 221 is located on the side of the moving contact 211 closer to the push system 10. The push system 10 is used to drive the moving contact 21 to move so that the moving contact 211 and the stationary contact 221 engage or disengage. The load switch 100 can solve the problem that the load switch 100 in the prior art occupies a large assembly space and has poor applicability due to unreasonable layout.

[0043] It should be noted that, as Figure 1 , Figure 8 , Figure 10 and Figure 11 As shown, the load switch 100 includes a drive system 10, a contact system 20, and a terminal assembly 30. The drive system 10, the contact system 20, and the terminal assembly 30 are arranged sequentially along a first direction y. The contact system 20 includes a moving contact 21 and a stationary contact 22. The terminal assembly 30 includes a moving contact terminal 31 and a stationary contact terminal 32. The moving contact terminal 31 and the stationary contact terminal 32 are arranged sequentially along a second direction x. The first direction y and the second direction x are perpendicular to each other.

[0044] Based on this, the moving contact terminal 31 is connected to the moving contact 21, and the stationary contact terminal 32 is connected to the stationary contact 22. The first end of the moving contact 21 and the stationary contact 22 are fixed in relative position, meaning there is no relative movement between them. The second end of the moving contact 21 is movable relative to its first end, allowing it to rotate around its first end. A moving contact 211 is provided on the second end of the moving contact 21, and a stationary contact 221 is provided on the stationary contact 22. The stationary contact 221 is located on the side of the moving contact 211 closer to the actuation system 10. This layout design reduces the width in the second direction x, making the spatial layout of the load switch 100 more reasonable and the structure more compact, effectively reducing the space occupied and allowing for better cooperation with other components. The actuation system 10 is used to drive the moving contact 21 to move, causing the moving contact 211 to engage or disengage with the stationary contact 221, thereby correspondingly realizing the closing and opening actions.

[0045] The load switch 100 provided in this application, through the rational arrangement of the positional relationship of the push system 10, the contact system 20, and the terminal assembly 30, is laid out along two mutually perpendicular directions (i.e., the first direction y and the second direction x), making the spatial distribution of each component more compact. Compared with the layout method of the prior art, which arranges components sequentially along the same direction, the layout method provided in this application effectively utilizes the internal space of the load switch 100, avoids space waste, and thus reduces the space occupied for assembly. At the same time, the stationary contact 221 is located on the side of the moving contact 211 closer to the push system 10, and the push system 10, the contact system 20, and the terminal assembly 30 are arranged sequentially along the first direction y, which helps to enhance the contact pressure between the moving contact 211 and the stationary contact 221.

[0046] By compactly arranging the various components within the load switch 100, the load switch 100 provided in this application can be used in different application scenarios, especially in situations with limited space, making it easier to install and use. For example, in some electronic devices or electrical systems with strict requirements on equipment size, the load switch 100 provided in this application can better adapt to the limitations of its internal space without being too large to install or affecting the normal operation of other components. Therefore, the load switch 100 has wider applicability in different environments and equipment, and can meet the needs of more users.

[0047] As one possible implementation method, such as Figures 8 to 11 As shown, in some embodiments, the striking direction of the moving contact 211 and the stationary contact 221 is parallel to the first direction y, or, as... Figures 1 to 7 As shown, in some other embodiments, the striking directions of the moving contact 211 and the stationary contact 221 are at an angle to the first direction y.

[0048] It should be noted that, as Figures 8 to 11 As shown, in some embodiments, the contact directions of the moving contact 211 and the stationary contact 221 are parallel to the first direction y. This means that after being driven by the pushing system 10, the moving contact 21 moves approximately along the first direction y, allowing the moving contact 211 to directly engage and disengage with the stationary contact 221 in an area approximately parallel to the first direction y. This design of the contact direction makes the movement trajectory of the moving contact 21 simpler and more direct, easier to control and implement, and also helps improve the operating accuracy and stability of the load switch 100. During each operation, the contact position and force of the moving contact 211 and the stationary contact 221 remain relatively consistent, thus ensuring good electrical connection performance. This also reduces production costs and helps improve the overall reliability and service life of the load switch 100.

[0049] like Figures 1 to 7As shown, in some embodiments, the contact directions of the moving contact 211 and the stationary contact 221 are at an angle to the first direction y. This means that after being driven by the pushing system 10, the moving contact 21 moves in an (approximately) straight line along a direction at a certain angle to the first direction y, allowing the moving contact 211 to directly engage and disengage with the stationary contact 221 in a direction at a certain angle to the first direction y. This design of the contact direction increases the flexibility of the load switch 100 design. By adjusting the angle, the moving contact 21 can achieve more optimized operating characteristics under different operating conditions, such as different currents, voltages, or loads. For example, in situations requiring rapid circuit connection or disconnection, a suitable angle can be designed to allow the moving contact 21 to have a higher speed when approaching the stationary contact 221, and the arm length of the moving contact 21 can be further extended within a limited space, thereby quickly completing the circuit connection or disconnection, reducing the generation and duration of arcs, and improving the arc-extinguishing performance and electrical life of the load switch 100. In addition, this design can adapt to different installation spaces and layout requirements to a certain extent, improving the applicability of the load switch 100.

[0050] As one possible implementation method, such as Figures 1 to 11 As shown, a connector 212 is also provided on one side of the moving contact 21 where the moving contact 211 is located. The connector 212 is used to connect the pushing system 10 to the moving contact 21, so that the pushing system 10 can drive the moving contact 21 to open and close the circuit through the connector 212. The moving contact 21 and the connector 212 can be manufactured separately and then fixed together, or they can be manufactured directly by integral molding. For example, in some embodiments, the connector 212 is a connector lug with a connection hole.

[0051] As one possible implementation method, such as Figures 1 to 9 As shown, in some embodiments, the connection point between the actuating system 10 and the moving contact 21 is located on the side of the moving contact 211 away from the first end of the moving contact 21, or, as... Figure 10 and Figure 11 As shown, in some other embodiments, the connection point between the actuating system 10 and the moving contact 21 is located on the side of the moving contact 211 near the first end of the moving contact 21.

[0052] It should be noted that, as Figures 1 to 9As shown, in some embodiments, the connection point between the actuating system 10 and the moving contact 21 is located on the side of the moving contact 211 away from the first end of the moving contact 21. In this case, the lever arm of the actuating system 10 acting on the moving contact 21 is relatively long. From the perspective of the lever principle, this arrangement allows the actuating system 10 to generate a large torque with a small force when actuating the moving contact 21, thus making it easier to drive the moving contact 21 to move. For example, when the actuating system 10 applies a small force, since the connection point is far from the rotation center of the moving contact 21 (the first end of the moving contact 21 is relatively fixed and can be regarded as the rotation center), according to the principle that torque equals force multiplied by lever arm, a large torque will be generated, causing the moving contact 21 to rotate around the first end, driving the moving contact 211 to engage or disengage with the stationary contact 221. This arrangement can reduce the driving force required by the actuating system 10, and the performance requirements of the actuating system 10 are relatively low, so a smaller power and smaller size actuating device can be selected, which is beneficial to reducing the cost and volume of the entire load switch 100. At the same time, the longer lever arm can make the movement of the moving contact 21 smoother and gentler, reduce impact and vibration, help improve the reliability of the engagement and disengagement of the moving and stationary contacts 221, and extend the service life of the contacts.

[0053] like Figure 10 and Figure 11As shown, in some embodiments, the connection point between the pushing system 10 and the moving contact 21 is located on the side of the moving contact 211 closer to the first end of the moving contact 21. In this case, the lever arm of the pushing system 10 acting on the moving contact 21 is relatively short. Therefore, the pushing system 10 needs to apply a larger force to make the moving contact 21 produce the same motion effect. However, this arrangement also has its unique advantages. Because the connection point is close to the rotation center of the moving contact 21 (the first end of the moving contact 21 is relatively fixed and can be considered the rotation center), the displacement of the moving contact 21 during movement is relatively small, enabling more precise position control. For example, in some applications requiring high precision in the movement of the moving contact 21, by precisely controlling the force of the pushing system 10, the moving contact 211 can be accurately connected to the stationary contact 221, ensuring good electrical contact. This arrangement is beneficial for improving the precision and accuracy of the movement of the moving contact 21 and is suitable for applications requiring high electrical performance and precise control of the contact position. For example, in some high-precision power systems or electronic devices, this ensures stable and low contact resistance between the moving contact 211 and the stationary contact 221, improving circuit stability and reliability. Furthermore, the shorter lever arm allows for faster movement response of the moving contact 21, enabling quicker action when rapid circuit disconnection or connection is required, thus improving the breaking capacity and response performance of the load switch 100. Simultaneously, the connection point between the actuating system 10 and the moving contact 21 is located on the side of the moving contact 211 closer to its first end, significantly reducing the erosion of the connector 212 caused by the electric arc generated when the moving contact 21 opens relative to the stationary contact 22, thereby improving system reliability.

[0054] As one possible implementation method, such as Figures 1 to 9 As shown, in some embodiments, the contact system 20 further includes a stationary contact lead-out piece, which includes a first lead-out section 222 and a second lead-out section 223. The stationary contact 22, the first lead-out section 222, the second lead-out section 223 and the stationary contact terminal 32 are connected in sequence. The stationary contact 22 extends along a third direction z that is perpendicular to both the first direction y and the second direction x. The first lead-out section 222 is located on the first side of the moving contact 21 along the third direction z. The stationary contact terminal 32 extends along the first direction y.

[0055] It should be noted that, as Figures 1 to 9As shown, in some embodiments, the stationary contact 22 extends along a third direction z, which is perpendicular to both the first direction y and the second direction x. This means that the stationary contact 22 is in a specific position and orientation in space, perpendicular to the layout of other components, forming a three-dimensional spatial layout that makes full use of the space of the housing in the third direction z. Secondly, it facilitates, in some embodiments, setting the connection point between the actuating system 10 and the moving contact 21 on the side of the moving contact 211 away from the first end of the moving contact 21, avoiding interference. For example, the first direction y is the height direction of the load switch 100, the second direction x is the length direction of the load switch 100, and the third direction z is the thickness direction of the load switch 100.

[0056] The stationary contact lead-out piece includes a first lead-out section 222 and a second lead-out section 223. The first lead-out section 222 is connected to the stationary contact 22, and the second lead-out section 223 is connected to the stationary contact terminal 32. The first lead-out section 222 is located on the first side of the moving contact 21 along the third direction z. For example, the first lead-out section 222 is located on the side of the moving contact 21 along the third direction z closer to the top cover of the load switch 100. The second lead-out section 223 makes a certain turn or transition, and finally connects to other external circuits or devices through the stationary contact terminal 32 to form a complete circuit path.

[0057] This design makes full use of three-dimensional space, resulting in a more compact and rational layout of the stationary contact 22, the stationary contact lead-out piece, and the stationary contact terminal 32. By extending the stationary contact 22 along the third direction z, excessive space is avoided in the first direction y and the second direction x, effectively reducing the overall size of the load switch 100 and improving space utilization. For example, in some space-constrained electrical equipment or distribution boxes, this compact layout can better adapt to the installation environment, making the overall structure of the equipment simpler and more compact.

[0058] A well-designed spatial layout and stationary contact terminal 32 contribute to improved electrical performance. The more rational arrangement of the stationary contact 22, stationary contact leads, and stationary contact terminal 32 results in a more uniform electric field distribution, reducing the possibility of electric field distortion and partial discharge, thereby improving the insulation performance and withstand voltage of the load switch 100. Simultaneously, a good electrical connection also helps reduce contact resistance, decrease heat generation, and improve the stability and reliability of the load switch 100 during operation.

[0059] In addition, the stationary contact lead-out piece (i.e., the first lead-out section 222 and the second lead-out section 223) has a relatively long overall length along the first direction y, which allows the magnetic field generated by the current passing through the stationary contact lead-out piece to exert a force on the moving contact 21 toward the stationary contact 22, thereby helping to strengthen the contact pressure between the moving contact 21 and the stationary contact 22, so as to ensure stable contact when the moving contact 21 and the stationary contact 22 are closed.

[0060] As one possible implementation method, such as Figure 8 and Figure 9 As shown, in the second embodiment, the second lead-out segment 223 extends along the second direction x, so that the stationary contact terminal 32 forms an approximately "Z"-shaped structure in three-dimensional space, allowing for reasonable wiring in the space near the moving contact 21 and the stationary contact 22, realizing a transition connection from the stationary contact 22 to the stationary contact terminal 32 in different directions; or, as Figures 1 to 7 As shown, in the first embodiment, the second lead-out segment 223 extends along the third direction z, causing the stationary contact terminal 32 to form an approximately "L"-shaped structure in three-dimensional space. This allows for reasonable wiring in the space near the moving contact 21 and the stationary contact 22, achieving a transition connection from the stationary contact 22 to the stationary contact terminal 32 in different directions. Regarding the actual extension direction of the second lead-out segment 223, those skilled in the art can design it reasonably based on the layout of the stationary contact terminal 32; no specific limitations are imposed here.

[0061] As one possible implementation method, such as Figure 10 and Figure 11 As shown, in some embodiments, the contact system 20 further includes a third lead-out section 224. The stationary contact 22 is connected to the stationary contact terminal 32 via the third lead-out section 224. The stationary contact 22 extends along a second direction x, and both the third lead-out section 224 and the stationary contact terminal 32 extend along a first direction y. The third lead-out section 224 is located on one side of the moving contact 21 along the second direction x, so that the stationary contact 22 can be connected to other external circuits or devices using the stationary contact terminal 32 to form a complete circuit path. This design can make more rational use of space, avoid spatial conflicts between components, reduce unnecessary space occupation, and facilitate the miniaturization design of the load switch 100, meeting the needs of some application scenarios with high space requirements.

[0062] In addition, the overall length of the stationary contact lead-out piece (i.e., the third lead-out section 224) along the first direction y is relatively long, which allows the magnetic field generated by the current passing through the stationary contact lead-out piece to exert a force on the moving contact 21 toward the stationary contact 22, thereby helping to strengthen the contact pressure between the moving contact 21 and the stationary contact 22, so as to ensure stable contact when the moving contact 21 and the stationary contact 22 are closed.

[0063] As one possible implementation method, such as Figures 1 to 11As shown, the contact system 20 also includes a moving contact lead-out piece, which includes a first segment 213, a second segment 214, and a third segment 215 connected in sequence. The first segment 213 is connected to the first end of the moving contact 21 via a flexible element (e.g., a flexible connecting wire) to ensure the reliability and stability of the connection. The first segment 213 and the stationary contact 22 are located on the same side of the moving contact 21. The second segment 214 extends along the first direction y. The third segment 215 is connected to the moving contact terminal 31. When the circuit is closed, at least a portion of the moving contact 21 extends along the first direction y. Located between the first segment 213 and the third segment 215, the current flowing through the first segment 213 is opposite to the current flowing through the third segment 215. This allows the magnetic field generated by the current flowing through the first segment 213 and the third segment 215 to exert a force on the moving contact 21 toward the stationary contact 22, thereby preventing the moving contact 21 and the stationary contact 22 from being separated by repulsion in the event of an abnormal situation such as a short circuit. This ensures stable contact between the moving contact 21 and the stationary contact 22, improves the operational stability of the contact system 20, and enhances its ability to withstand short-circuit currents.

[0064] As one possible implementation method, such as Figures 1 to 11 As shown, the driving system 10 includes a magnetic circuit assembly 11, an armature assembly 12, and a transmission component 13. The armature assembly 12 is connected to the moving contact 21 through the transmission component 13. The magnetic circuit assembly 11 is used to drive the armature assembly 12 to move and, through the transmission component 13, to move the moving contact 21 closer to or further away from the stationary contact 22. The magnetic circuit assembly 11 includes a coil 111 and a yoke 112. When the coil 111 is energized, the magnetic field generated by the magnetic circuit assembly 11 acts on the armature assembly 12, enabling the magnetic circuit assembly 11 to drive the armature assembly 12 to move. Since the armature assembly 12 is connected to the moving contact 21 through the transmission component 13, when the armature assembly 12 moves, it can also drive the moving contact 21 to move through the transmission component 13, thereby realizing the opening (disconnecting the circuit) and closing (connecting the circuit) operations with the stationary contact 22.

[0065] For example, such as Figures 1 to 10 As shown, in some embodiments, the axial direction of coil 111 is parallel to the first direction y, which allows the pushing system 10 to make full use of the space in the second direction x, resulting in a more compact layout between components, or, as... Figure 11 As shown, in the fourth embodiment, the axial direction of the coil 111 is parallel to the second direction x, which enables the moving contact 21 to move quickly and stably in the first direction y.

[0066] As one possible implementation method, such as Figures 2 to 5 , Figure 9As shown, a connecting member 212 is also provided on the side of the moving contact 21 where the moving contact 211 is located. The first end of the transmission member 13 is hinged to the connecting member 212, and the second end is movably connected to the armature assembly 12 to provide contact overtravel for the moving contact 21. For example, in some embodiments, a groove is provided on the side of the armature assembly 12 away from the magnetic circuit assembly 11. The first end of the transmission member 13 is hinged to the connecting member 212, and the second end is movably connected in the groove, so that the second end of the transmission member 13 can move freely in the groove to provide contact overtravel for the moving contact 21, thereby realizing the overtravel design. Furthermore, an elastic member can also be provided between the transmission member 13 and the armature assembly 12 to prevent the transmission member 13 from bouncing and to provide contact pressure for the moving contact 21.

[0067] As one possible implementation method, such as Figures 1 to 11 As shown, there is one moving contact 211 and one stationary contact 221. The second end of the moving contact 21 is driven by the transmission member 13 to rotate relative to the first end of the moving contact 21, so that the second end of the moving contact 21 moves closer to or further away from the stationary contact 22. This application adopts a single-contact design, which greatly simplifies the overall design and manufacturing process of the load switch 100 compared to a multi-contact design. It reduces the number of parts, lowering material costs, processing costs, and assembly costs during production. At the same time, the simplified structure also helps improve production efficiency, reduces the probability of failure that may result from too many parts, and improves the reliability and stability of the load switch 100.

[0068] As one possible implementation method, such as Figures 1 to 3 As shown, the contact system 20 also includes at least one magnetizing element 23, which is used to enhance the contact pressure between the moving contact 21 and the stationary contact 22 to ensure stable closing of the moving contact 21 and the stationary contact 22.

[0069] As one possible implementation, when the number of magnetizing elements 23 is one, the magnetizing element 23 is located on one side of the moving contact 21 along the first direction y. For example, the magnetizing element 23 is fixedly disposed on the housing, and the magnetizing element 23 is located on the side of the moving contact 21 away from the pushing system 10; or, as... Figures 1 to 3 As shown, the magnetizing element 23 is located on one side of the moving contact 21 along a third direction z that is perpendicular to both the first direction y and the second direction x. For example, the magnetizing element 23 is fixedly mounted on the housing, and the magnetizing element 23 is located on the side of the moving contact 21 along the third direction z that is close to the base of the load switch 100.

[0070] As one possible implementation, when there are two magnetizing elements 23, the two magnetizing elements 23 are respectively located on opposite sides of the moving contact 21 along the first direction y. For example, one magnetizing element 23 is fixedly mounted on the housing and is located on the side of the moving contact 21 away from the push system 10, and the other magnetizing element 23 is located on the side of the moving contact 21 close to the push system 10; or, the two magnetizing elements 23 are respectively located on opposite sides of the moving contact 21 along a third direction z that is perpendicular to both the first direction y and the second direction x. The space of the load switch 100 in the third direction z can be further utilized. For example, one magnetizing element 23 is fixedly mounted on the housing and is located on the side of the moving contact 21 along the third direction z close to the base of the load switch 100, and the other magnetizing element 23 is located on the side of the moving contact 21 along the third direction z close to the top cover of the load switch 100.

[0071] Furthermore, when the magnetizing element 23 is disposed on at least one side of the moving contact 21 along a third direction z that is perpendicular to both the first direction y and the second direction x, its projection along the third direction z simultaneously overlaps at least partially with the projections of the moving contact 21 and the first segment 213 along the third direction z, so as to further reduce the magnetic resistance between the moving contact 21 and the first segment 213 and strengthen the contact pressure between the moving contact 21 and the stationary contact 22.

[0072] As one possible implementation method, such as Figures 1 to 11 As shown, the load switch 100 also includes an arc-extinguishing assembly 90. The main function of the arc-extinguishing assembly 90 is to extinguish the arc generated when the moving contact 21 and the stationary contact 22 open, so that the load switch 100 can disconnect the circuit faster and more reliably when opening, thereby improving the circuit breaking capacity of the load switch 100. For example, Figures 1 to 11 As shown, in the above embodiment, the arc extinguishing component 90 is disposed on the second side of the moving contact 21 along a third direction z that is perpendicular to both the first direction y and the second direction x. For example, the arc extinguishing component 90 is located on the side of the moving contact 21 along the third direction z that is close to the base of the load switch 100, so as to make full use of the space in the third direction z, thereby reducing the size of the load switch 100 product along the second direction x; and / or, the arc extinguishing component 90 is disposed on the side of the first end of the moving contact 21 along the second direction x.

[0073] For example, such as Figure 1 As shown, the arc extinguishing component 90 and the first lead-out section 222 are respectively disposed on both sides of the moving contact 21 along the third direction z and are arranged opposite to each other. The first lead-out section 222 enables the arc to enter the arc extinguishing component 90 more quickly, thereby improving the arc extinguishing performance of the load switch 100.

[0074] Regardless of the arrangement, the arc extinguishing assembly 90 should be placed near the moving contact 21 and the stationary contact 22 so that the arc extinguishing assembly 90 can extinguish the arc generated when the moving contact 21 and the stationary contact 22 are opened.

[0075] This application also provides an electricity meter, including the load switch 100 described above. Since the structure and beneficial effects of the load switch 100 have been described in detail in the foregoing embodiments, they will not be repeated here.

[0076] The above description is merely an optional embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0077] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

Claims

1. A load switch, characterized in that, The assembly includes a push system (10), a contact system (20), and a terminal assembly (30) arranged sequentially along a first direction (y). The contact system (20) includes a moving contact (21) and a stationary contact (22). The terminal assembly (30) includes a moving contact terminal (31) and a stationary contact terminal (32) arranged sequentially along a second direction (x) perpendicular to the first direction (y). The moving contact terminal (31) is connected to the moving contact (21), and the stationary contact terminal (32) is connected to the stationary contact (22). The moving contact (21)... The first end is fixed relative to the stationary contact (22), and the second end of the moving contact (21) is movable relative to the first end of the moving contact (21). A moving contact (211) is provided on the second end of the moving contact (21), and a stationary contact (221) is provided on the stationary contact (22). The stationary contact (221) is located on the side of the moving contact (211) close to the pushing system (10). The pushing system (10) is used to drive the moving contact (21) to move so that the moving contact (211) engages or disengages from the stationary contact (221).

2. The load switch according to claim 1, characterized in that, The striking directions of the moving contact (211) and the stationary contact (221) are parallel to the first direction (y), or there is an angle between the striking directions of the moving contact (211) and the stationary contact (221) and the first direction (y).

3. The load switch according to claim 1, characterized in that, A connector (212) is also provided on one side of the moving contact (211) where the moving contact (21) is located. The connector (212) is used to connect the pushing system (10) to the moving contact (21) to drive the moving contact (21) to open and close.

4. The load switch according to claim 3, characterized in that, The connection point between the push system (10) and the moving contact (21) is located on the side of the moving contact (211) away from the first end of the moving contact (21), or the connection point between the push system (10) and the moving contact (21) is located on the side of the moving contact (211) close to the first end of the moving contact (21).

5. The load switch according to claim 1, characterized in that, The contact system (20) further includes a stationary contact lead-out piece, which includes a first lead-out section (222) and a second lead-out section (223). The stationary contact (22), the first lead-out section (222), the second lead-out section (223) and the stationary contact terminal (32) are connected in sequence. The stationary contact (22) extends along a third direction (z) that is perpendicular to both the first direction (y) and the second direction (x). The first lead-out section (222) is located on the first side of the moving contact (21) along the third direction (z). The stationary contact terminal (32) extends along the first direction (y). The second lead-out section (223) extends along the second direction (x), or the second lead-out section (223) extends along the third direction (z).

6. The load switch according to claim 1, characterized in that, The contact system (20) further includes a third lead-out section (224), through which the stationary contact (22) is connected to the stationary contact terminal (32). The stationary contact (22) extends along the second direction (x), and both the third lead-out section (224) and the stationary contact terminal (32) extend along the first direction (y). The third lead-out section (224) is located on the side of the moving contact (21) away from the first end of the moving contact (21) along the second direction (x).

7. The load switch according to claim 1, characterized in that, The contact system (20) further includes a moving contact lead-out piece, which includes a first segment (213), a second segment (214), and a third segment (215) connected in sequence. The first segment (213) is connected to the first end of the moving contact (21) through a flexible member. The first segment (213) and the stationary contact (22) are located on the same side of the moving contact (21). The second segment (214) extends along the first direction (y). The third segment (215) is connected to the moving contact terminal (31). When the circuit is closed, at least part of the moving contact (21) is located between the first segment (213) and the third segment (215) along the first direction (y). The current flow direction through the first segment (213) is opposite to the current flow direction through the third segment (215).

8. The load switch according to claim 1, characterized in that, The driving system (10) includes a magnetic circuit assembly (11), an armature assembly (12), and a transmission component (13). The armature assembly (12) is connected to the moving contact (21) through the transmission component (13). The magnetic circuit assembly (11) is used to drive the armature assembly (12) to move and to drive the moving contact (21) to move closer to or away from the stationary contact (22) through the transmission component (13). The magnetic circuit assembly (11) includes a coil (111) and a yoke (112). The axial direction of the coil (111) is parallel to the first direction (y) or the axial direction of the coil (111) is parallel to the second direction (x).

9. The load switch according to claim 8, characterized in that, A connector (212) is also provided on one side of the moving contact (21) where the moving contact point (211) is located. The first end of the transmission member (13) is hinged to the connector (212) and the second end is movably connected to the armature assembly (12) to provide contact overtravel for the moving contact (21).

10. The load switch according to claim 8, characterized in that, The number of the moving contact (211) and the stationary contact (221) is one. The second end of the moving contact (21) is driven by the transmission member (13) to rotate relative to the first end of the moving contact (21), so that the second end of the moving contact (21) moves closer to or further away from the stationary contact (22).

11. The load switch according to claim 1, characterized in that, The contact system (20) further includes at least one magnetizing element (23) for enhancing the contact pressure between the moving contact (21) and the stationary contact (22).

12. The load switch according to claim 11, characterized in that, When the number of the magnetizing element (23) is one, the magnetizing element (23) is located on one side of the moving contact (21) along the first direction (y), or the magnetizing element (23) is located on one side of the moving contact (21) along a third direction (z) that is perpendicular to both the first direction (y) and the second direction (x).

13. The load switch according to claim 11, characterized in that, When there are two magnetizing elements (23), the two magnetizing elements (23) are located on opposite sides of the moving contact (21) along the first direction (y), or the two magnetizing elements (23) are located on opposite sides of the moving contact (21) along a third direction (z) that is perpendicular to both the first direction (y) and the second direction (x).

14. The load switch according to claim 1, characterized in that, It also includes an arc extinguishing component (90), which is disposed on the second side of the moving contact (21) along a third direction (z) perpendicular to both the first direction (y) and the second direction (x), and / or disposed on the first end of the moving contact (21) along the second direction (x).

15. An electricity meter, characterized in that, Includes the load switch (100) as described in any one of claims 1 to 14.

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