A load switch and a meter

Abstract

The utility model provides a kind of load switch and electric meter, it is related to electrical equipment technical field.Load switch includes coil assembly, yoke assembly, contact mechanism and armature assembly.Coil assembly includes first coil and second coil, yoke assembly is used to make first coil and second coil form series magnetic flux path;Armature assembly is arranged between first coil and second coil, armature assembly is transmission connection with contact mechanism, for under the action of magnetic field driving contact mechanism closing or opening, such not only can make full use of first coil, second coil and armature assembly arrangement direction's space, to this reduce armature assembly and first coil and second coil's installation volume, also make full use of the space between first coil and second coil, to realize first coil, second coil and armature assembly arrangement compact, layout reasonable.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a load switch and an electricity meter. Background Technology

[0002] In existing electronic devices or switching devices, load switches are key components for controlling circuit on / off states, and their layout design has a significant impact on overall performance, safety, and space utilization. However, current load switch structural designs and arrangements still have many shortcomings.

[0003] Specifically, the coil assemblies and armatures in existing load switches typically occupy a large installation volume, which not only affects the installation space of other components but also limits the miniaturization, compactness, and layout rationality of the load switch. Utility Model Content

[0004] The purpose of this invention is to provide a load switch and meter that can optimize the space utilization of the load switch and improve assembly efficiency, so as to meet the development needs of modern electronic equipment for high performance and high integration.

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

[0006] In a first aspect, this utility model provides a load switch, comprising:

[0007] A coil assembly, the coil assembly including a first coil and a second coil;

[0008] A yoke assembly for forming a series magnetic flux path between the first coil and the second coil;

[0009] Contact mechanism;

[0010] An armature assembly is disposed between the first coil and the second coil. The armature assembly is drively connected to the contact mechanism and is used to drive the contact mechanism to close or open under the action of a magnetic field.

[0011] In an optional embodiment, the axes of the first coil and the second coil are arranged parallel to each other, and the armature assembly is located between the axes of the first coil and the second coil.

[0012] In an optional embodiment, the axes of the first coil and the second coil extend along a first direction, and the first coil, the armature assembly, and the second coil are arranged along a second direction, wherein the first direction is perpendicular to the second direction.

[0013] In an optional embodiment, the yoke assembly includes a second yoke and two first yokes, and the coil assembly further includes at least two iron cores, with the two iron cores respectively passing through the first coil and the second coil;

[0014] One end of the core of the first coil is connected to one of the first yokes, and the other end is connected to the second yoke; one end of the core of the second coil is connected to another of the first yokes, and the other end is connected to the second yoke; the two first yokes are respectively disposed on both sides of the armature assembly.

[0015] In an optional embodiment, the first yoke and the second yoke are planar, and the second yoke, the first yoke, and the contact mechanism are arranged sequentially along a first direction.

[0016] In an optional embodiment, the armature assembly includes a first armature and a second armature, a magnet and a rotating shaft. The magnet is disposed between the first armature and the second armature. The rotating shaft is rotatably disposed in the mounting housing. The rotating shaft is located between the two first yokes and the rotating shaft and the two first yokes are arranged along a second direction. The axis of the rotating shaft extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0017] In an optional embodiment, the coil assembly further includes two first leads and two second leads, which are connected to an external excitation to form an electrical circuit.

[0018] In an optional embodiment, the first lead-out pin and its corresponding iron core and the yoke assembly are arranged symmetrically with the second lead-out pin and its corresponding iron core and the yoke assembly.

[0019] In an optional embodiment, the load switch further includes an electronic component, wherein the first lead and the second lead are both electrically connected to the electronic component, and the electronic component is provided with a power receiving part for connecting to an external power source.

[0020] Secondly, the present invention provides an electricity meter, including a housing and a load switch as described in any of the foregoing embodiments, wherein the load switch is disposed inside the housing and the coil assembly is located in the middle of the housing.

[0021] The beneficial effects of the load switch and meter provided in this utility model embodiment include: by setting the armature between the first coil and the second coil, not only can the space in the arrangement direction of the first coil, the second coil and the armature assembly be fully utilized, thereby reducing the installation volume of the armature assembly and the first coil and the second coil, but also the space between the first coil and the second coil can be fully utilized, thereby achieving a compact and reasonable arrangement of the first coil, the second coil and the armature assembly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the load switch from a first-view perspective, provided in an embodiment of the present utility model.

[0024] Figure 2 This is a schematic diagram of the load switch structure from a second perspective, provided in an embodiment of the present invention.

[0025] Figure 3 This is a first-view structural schematic diagram of the internal structure of the load switch provided in an embodiment of the present utility model;

[0026] Figure 4 This is a second-view structural schematic diagram of the internal structure of the load switch provided in an embodiment of the present utility model;

[0027] Figure 5 A third-view structural diagram of the internal structure of the load switch provided in an embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram of the load switch tripping state section provided in an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the load switch closed state section provided in an embodiment of the present utility model;

[0030] Figure 8 A schematic diagram of the arc-extinguishing chamber and stationary contact structure provided in an embodiment of this utility model;

[0031] Figure 9 This is a schematic diagram of the arc-extinguishing chamber structure provided for an embodiment of the present invention.

[0032] Icons: 10-Load switch; 100-Mounting housing; 200-Coil assembly; 210-First coil; 220-Second coil; 230-Core; 240-First lead-out pin; 250-Second lead-out pin; 300-Yoke assembly; 310-First yoke; 320-Second yoke; 400-Contact mechanism; 410-Moving contact; 411-Moving contact; 412-First connecting part; 413-Rotating shaft; 414-Second connecting part; 420-Stationary contact; 421-Stationary contact; 422-Lead-out section; 423-First section; 424-Second section; 500-Armature assembly Components; 510-First armature; 520-Second armature; 530-Magnet; 540-Rotating shaft; 600-Arc extinguishing chamber; 610-Grid plate; 611-First arc extinguishing part; 612-Second arc extinguishing part; 620-First arc ignition plate; 630-Second arc ignition plate; 700-Terminal group; 710-First terminal; 720-Second terminal; 800-Electronic component; 810-Electrical connection part; 900-Connecting wire; 1000-Transmission component; 1100-First elastic component; 1200-Second elastic component; 1300-Magnetic amplification component; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] 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.

[0036] In the description of this utility model, 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 of this utility model is in use. They are only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] 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.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In existing electronic devices or switching devices, load switches are key components for controlling circuit on / off states, and their layout design has a significant impact on overall performance, safety, and space utilization. However, current load switch structural designs and arrangements still have many shortcomings.

[0040] Specifically, the multiple electrical components of a load switch are distributed or arranged haphazardly within the housing, lacking proper spatial planning. This results in underutilization of the internal space, limiting the miniaturization and integration of the overall equipment. Furthermore, the irrational spatial layout of the load switch also leads to a smaller arc-extinguishing chamber, making it difficult to effectively suppress the generation and spread of electric arcs, thus affecting the safety and reliability of the equipment.

[0041] Therefore, based on the problems existing in the current technology, there is an urgent need to propose a load switch with a reasonable spatial layout. This switch can not only optimize the utilization of the internal space of the housing and improve assembly efficiency, but also increase the arc extinguishing space to enhance the arc extinguishing capability, thereby improving the safety and stability of the load switch and meeting the development needs of modern electronic equipment for high performance and high integration.

[0042] For details, please refer to Figures 1 to 5 The load switch 10 includes a mounting housing 100, an electromagnetic drive mechanism, a contact mechanism 400, an arc-extinguishing chamber 600, and a terminal group 700 that extends at least partially outside the mounting housing 100 for connection with external loads, etc. The electromagnetic drive mechanism includes a coil assembly 200, a yoke assembly 300, and an armature assembly 500. In other words, the coil assembly 200, the yoke assembly 300, the contact mechanism 400, the armature assembly 500, and the arc-extinguishing chamber 600 are all installed inside the mounting housing 100.

[0043] The coil assembly 200 includes a first coil 210 and a second coil 220. The yoke assembly 300 is used to form a series magnetic flux path between the first coil 210 and the second coil 220. The contact mechanism 400 includes a moving contact 410 and a stationary contact 420. The armature assembly 500 is drivenly connected to the moving contact 410 and is used to drive the moving contact 410 and the stationary contact 420 to close or open under the action of the electromagnetic field of the coil. The terminal group 700 is connected to the moving contact 410 and the stationary contact 420.

[0044] In this embodiment, the electromagnetic drive mechanism and the contact mechanism 400 are arranged sequentially along the first direction X, and the arc-extinguishing chamber 600, the contact mechanism 400, and the terminal group 700 are arranged sequentially along the second direction Y (i.e., the arc-extinguishing chamber 600 and the terminal group 700 are respectively located at both ends of the contact mechanism 400). This makes the coil assembly 200, the yoke assembly 300, the contact mechanism 400, the armature assembly 500, the arc-extinguishing chamber 600, and the terminal group 700 arranged neatly and compactly, thus making its layout reasonable. This not only reduces the overall size of the load switch 10, but also provides support for the development of the load switch 10 towards thinner and more integrated designs.

[0045] Therefore, the well-designed load switch 10 provides more installation space for the arc-extinguishing chamber 600, thereby increasing the volume of the arc-extinguishing chamber 600, thus increasing the arc-extinguishing space to enhance the arc-extinguishing capability, and thus improving the safety and stability of the load switch 10.

[0046] Furthermore, by connecting the first coil 210 and the second coil 220 in series, the magnetic flux generated by external interference magnetic fields along the axial direction of the first coil 210 and the second coil 220 in their respective magnetic circuits is opposite in direction, thus canceling each other out and improving the product's resistance to external magnetic field interference. Moreover, connecting the first coil 210 and the second coil 220 in series also increases the usable space of a single coil, allowing for a larger winding volume of the enameled wire within a limited space, thereby increasing the ampere-turns of the product and enhancing the driving force.

[0047] In this embodiment, the first direction X is perpendicular to the second direction Y. The first direction X corresponds to the length direction of the mounting housing 100, and the second direction Y corresponds to the height direction of the mounting housing 100. In other words, the electromagnetic drive mechanism and the contact mechanism 400 are arranged along the length direction of the mounting housing 100, and the arc-extinguishing chamber 600, the contact mechanism 400, and the terminal group 700 are arranged along the height direction of the mounting housing 100. This makes the coil assembly 200, the yoke assembly 300, the contact mechanism 400, the armature assembly 500, the arc-extinguishing chamber 600, and the terminal group 700 more neatly arranged in the mounting housing 100, ensuring that the space in the mounting housing 100 is fully utilized, thus achieving a reasonable layout of the load switch 10.

[0048] Furthermore, the stationary contact 420 is provided with a stationary contact portion 421, and one end of the moving contact 410 is provided with a moving contact portion 411. The moving contact portion 411 is used to contact or separate from the stationary contact portion 421, thereby realizing closing or opening. In addition, the stationary contact portion 421 and the moving contact portion 411 are arranged along the first direction X, and the arc-extinguishing chamber 600 is disposed at the moving contact portion 411 and / or the stationary contact portion 421; furthermore, at least a portion of the projection of the first coil 210 along the first direction X coincides with at least a portion of the projection of the arc-extinguishing chamber 600 along the first direction X.

[0049] Therefore, the arc-extinguishing chamber 600 is located at the moving contact 411 and / or the stationary contact 421 to ensure the arc-extinguishing capability of the load switch 10 and improve the operational stability and safety of the load switch 10.

[0050] Additionally, it should be noted that the first coil 210 is located vertically above the second coil 220 along the second direction Y, and the arc-extinguishing chamber 600 and the first coil 210 are arranged along the first direction X. This not only makes the layout of the load switch 10 reasonable, but also increases the installation space of the arc-extinguishing chamber 600, thereby increasing the arc-extinguishing space and enhancing the arc-extinguishing capability. Furthermore, at least a portion of the projection of the first coil 210 along the first direction X coincides with at least a portion of the projection of the arc-extinguishing chamber 600 along the first direction X, which also allows the arc-extinguishing chamber 600 to further play a magnetic shielding role, avoiding the influence of external magnetic sources on the load switch.

[0051] It is understandable that, in order to ensure that the electric arc can be smoothly discharged after being introduced into the arc-extinguishing chamber 600, the mounting housing 100 is provided with an exhaust port at a position corresponding to the arc-extinguishing chamber 600, and the exhaust port is located close to the arc-extinguishing chamber 600. Specifically, the exhaust port can be provided on the bottom wall (i.e., the plate that is attached to the bottom of the housing of the load switch 10 and the meter) and / or the top wall (i.e., the plate that is away from the meter terminals and perpendicular to the bottom wall when the load switch 10 is installed), to ensure the arc-extinguishing effect of the load switch 10 and to prevent the load switch 10 from causing temperature rise of nearby components during arc extinguishing; furthermore, the exhaust port is provided at the corner of the bottom wall and the corner of the top wall of the mounting housing 100.

[0052] Furthermore, the first coil 210, the armature assembly 500, and the second coil 220 are arranged along the second direction Y, so that the armature assembly 500, the first coil 210, and the second coil 220 are arranged compactly and reasonably, thereby improving space utilization.

[0053] Furthermore, the axial direction of the first coil 210 and the second coil 220 is along the first direction X, and the armature assembly 500 is located between the first coil 210 and the second coil 220. That is, the first coil 210, the armature assembly 500, and the second coil 220 are arranged along the second direction Y. This not only makes full use of the space between the first coil 210, the second coil 220 and the armature assembly 500, thereby reducing the installation volume of the armature assembly 500 and the first coil 210 and the second coil 220, but also makes full use of the space between the first coil 210 and the second coil 220, thereby achieving a compact and reasonable arrangement of the first coil 210, the second coil 220 and the armature assembly 500.

[0054] Specifically, the axes of the first coil 210 and the second coil 220 are arranged in parallel, and the armature assembly 500 is located between the axes of the first coil 210 and the second coil 220. This makes full use of the space between the first coil 210 and the second coil 220 in the second direction Y, and reduces the installation space of the first coil 210, the second coil 220 and the armature assembly 500 in the first direction X, thereby achieving a compact and reasonable arrangement of the first coil 210, the second coil 220 and the armature assembly 500.

[0055] Furthermore, the yoke assembly 300 includes two first yokes 310 and one second yoke 320.

[0056] The first yoke 310 is planar, the axes of the first coil 210 and the second coil 220 both extend along the first direction X, the first yoke 310 extends along the second direction Y, the first direction X is perpendicular to the second direction Y, and the armature assembly 500 is located between the two first yokes 310.

[0057] It should be noted that existing yokes are usually bent and have a complex manufacturing process, and the number of coils is usually one, while the armature assembly 500 is set on one side of the coil. As a result, the coil and the armature assembly 500 will occupy a large installation volume.

[0058] The load switch 10 provided in this application, by setting a first coil 210 and a second coil 220, and by correspondingly setting two flat first yokes 310 with the first coil 210 and the second coil 220 respectively, and making the extension direction of the first yokes 310 and the second yokes 320 perpendicular to the axial direction of the first coil 210 and the second coil 220, achieves the purpose of setting the armature assembly 500 between the first coil 210 and the second coil 220, thereby making full use of the space between the first coil 210 and the second coil 220 in the second direction Y, and reducing the installation space of the first coil 210 and the second coil 220 and the armature assembly 500 in the first direction X.

[0059] In detail, the coil assembly 200 also includes at least two iron cores 230, which are respectively passed through the first coil 210 and the second coil 220. Two first yokes 310 are respectively connected to one end of the at least two iron cores 230, and the second yoke 320 is used to connect the other end of the two iron cores 230 at the same time.

[0060] Therefore, the two first yokes 310 are respectively disposed on both sides of the armature assembly 500. Furthermore, the second yoke 320, the first yokes 310, and the contact mechanism 400 are arranged sequentially along the first direction X.

[0061] Furthermore, the armature assembly 500 includes a first armature 510, a second armature 520, and a magnet 530. The magnet 530 is disposed between the first armature 510 and the second armature 520. The first armature 510 and the second armature 520 are respectively disposed on both sides of the first yoke 310 for magnetic attraction and transmission with the yoke assembly 300. Specifically, when the first coil 210 and the second coil 220 are energized, the yoke assembly 300 forms a series magnetic flux path, which jointly drives the armature assembly 500 to move.

[0062] Furthermore, the armature assembly 500 also includes a rotating shaft 540, which is rotatably disposed in the mounting housing 100. The rotating shaft 540 is located between the two first yokes 310, and the rotating shaft 540 and the two first yokes 310 are arranged along the second direction Y.

[0063] In this embodiment, the rotating shaft 540 and the two first yokes 310 are located in the same plane, and the axis of the rotating shaft 540 extends along the third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other.

[0064] It is understandable that the third-party direction Z corresponds to the thickness direction of the mounting housing 100.

[0065] Furthermore, the coil assembly 200 also includes two first leads 240 and two second leads 250. The first coil 210 is energized through the two first leads 240, and the second coil 220 is energized through the two second leads 250. The two first leads 240 and the two second leads 250 are connected to an external excitation to form an electrical circuit.

[0066] In this embodiment, one end of each of the two first leads 240 is arranged parallel to the iron core 230 for winding the first coil 210, and the other end is used to connect to an external power source. Therefore, when energized, the current flows sequentially through one of the first leads 240, the first coil 210, and the other lead. The second coil 220 has the same structure as the first coil 210, and the second lead 250 is positioned in the same direction as the first lead 240, which will not be described further here.

[0067] Furthermore, the load switch 10 also includes an electronic component 800, with the first lead 240 and the second lead 250 both electrically connected to the electronic component 800. The electronic component 800 is provided with a power receiving part 810, which is used to connect to an external power source.

[0068] It should be noted that in practical applications, since the power receiving part 810 of the mounting housing 100 is usually a standard structure, in order to adapt to the structure of the power receiving part 810, the two first leads 240 and the two second leads 250 are connected to the electronic component 800, and the power receiving part 810 of the electronic component 800 is connected to an external power source, so as to realize the energization of the first coil 210 and the second coil 220 without changing the mounting housing 100.

[0069] Specifically, the mounting housing 100 is provided with a power connection port, which is provided in correspondence with the power connection part 810.

[0070] Optionally, electronic component 800 may be, but is not limited to, a PCB board.

[0071] It is worth mentioning that, in order to save installation space and make full use of the internal space of the mounting housing 100, the second elastic element 1200 is mounted on the electronic component 800.

[0072] It is also worth mentioning that the two first leads 240 and their corresponding iron cores 230 and first yokes 310 are symmetrically arranged with the two second leads 250 and their corresponding iron cores 230 and first yokes 310, which facilitates the installation of the first coil 210 and the second coil 220.

[0073] Furthermore, the moving contact 410 is provided with a moving contact portion 411 and a first connecting portion 412 at both ends. The first connecting portion 412 is movably disposed in the mounting housing 100, and the moving contact 410 is used to make the moving contact portion 411 swing around the first connecting portion 412 under the drive of the armature assembly 500.

[0074] In this embodiment, the first connecting part 412 is movably disposed on the mounting housing 100. Therefore, when the coil assembly 200 is energized, the generated magnetic field drives the armature assembly 500 to rotate, and thereby the armature assembly 500 drives the moving contact 411 of the moving contact 410 to swing around the first connecting part 412.

[0075] It is understood that the load switch 10 also includes a flexible connecting wire 900, and the moving contact 410 and the terminal group 700 are connected by the flexible connecting wire 900.

[0076] Specifically, the first connecting part 412 is rotatably disposed on the mounting housing 100 via the rotating shaft 413, one end of the flexible connecting wire 900 is connected to the terminal group 700, and the other end is connected to the side of the moving contact 410 away from the rotating shaft 413.

[0077] In other words, the connection position between the flexible connecting wire 900 and the moving contact 410 and the first connecting part 412 are respectively located on two opposite side walls of the moving contact 410, which facilitates the installation and assembly of the flexible connecting wire 900.

[0078] In detail, the first connecting part 412 is a sliding lug structure with a groove, and the mounting housing 100 is provided with a rotating shaft 413, which passes through the groove; or, the first connecting part 412 is a shaft, and the mounting housing 100 is provided with a groove so that the shaft can slide and / or rotate relative to the groove, thereby providing overtravel.

[0079] Furthermore, the load switch 10 also includes a transmission component 1000, an armature assembly 500, and a moving contact 410 connected in sequence. Therefore, when the coil assembly 200 is energized, the generated magnetic field drives the armature assembly 500 to move, and the armature assembly 500 drives the transmission component 1000 to move synchronously. Ultimately, the transmission component 1000 drives the moving contact 410 to approach or move away from the stationary contact 420, thereby realizing the closing or opening of the contact mechanism 400.

[0080] Furthermore, the moving contact 410 is also provided with a second connecting part 414. The moving contact 410 and the first connecting part 412 are respectively located at both ends of the moving contact 410, and the second connecting part 414 is located between the moving contact 410 and the first connecting part 412. One end of the transmission member 1000 is movably connected to the armature assembly 500, and the other end is movably connected to the second connecting part 414.

[0081] In this embodiment, the second connecting part 414 and the first connecting part 412 are both disposed on the same side wall of the moving contact 410, that is, the transmission member 1000 is connected to the side wall of the moving contact 410 facing away from the armature. Therefore, with the transmission length of the transmission member 1000 remaining unchanged, the installation distance between the transmission member 1000 and the moving contact 410 can be reduced, thus making the connection structure between the transmission member 1000 and the moving contact 410 more compact, the layout more reasonable, and making full use of the installation space.

[0082] Of course, in some other embodiments of the invention, one end of the transmission member 1000 is connected to the armature assembly 500, and the connection position between the transmission member 1000 and the armature assembly 500 is located between the coil assembly 200 and the contact mechanism 400. The other end of the transmission member 1000 is connected to the end of the moving contact 410 where the moving contact portion 411 is provided, so that the distance between the force application position and the other end of the moving contact 410 where the first connecting portion 412 is provided is greater, that is, the force arm is larger, and it is easier to drive the moving contact 410 to swing.

[0083] Optionally, the transmission component 1000 is a linkage structure, with the armature assembly 500 of the transmission component 1000 hinged and the other end hinged to the second connecting part 414.

[0084] Furthermore, the load switch 10 also includes a first elastic element 1100 and / or a second elastic element 1200, both of which are mounted on the mounting housing 100.

[0085] Among them, such as Figure 6 and Figure 7 As shown, the first elastic member 1100 is used to cooperate with the moving contact 410, and the cooperation position of the first elastic member 1100 and the moving contact 410 is located between the first connecting part 412 and the second connecting part 414. The first elastic member 1100 is used to apply an elastic force when the moving contact 411 contacts or separates from the stationary contact 420.

[0086] In other words, the contact position of the moving contact 410 and the moving contact 411 of the first elastic element 1100 are located on both sides of the second connecting part 414, so that the moving contact 410 forms a lever structure through the second connecting part 414. With the second connecting part 414 as the fulcrum, the moving contact 410 can rotate around the second connecting part 414 during the closing process by generating an elastic force through the deformation of the first elastic element 1100. This provides a force for the moving contact 411 to move towards the stationary contact 420, thereby increasing the closing speed of the moving contact 410. Furthermore, when the moving contact 411 contacts the stationary contact 420 and the circuit is closed, the first elastic element 1100 is in a deformed state, so that the elastic force generated by the first elastic element 1100 can further increase the contact pressure between the moving contact 411 and the stationary contact 420, thereby improving the short-circuit withstand capability of the contact mechanism 400.

[0087] During the opening process, the elastic force generated by the first elastic element 1100 can also provide the moving contact 410 with a force that moves away from the stationary contact 420, thereby accelerating the opening speed between the moving contact 410 and the stationary contact 420. Furthermore, the first elastic element 1100 is disposed on the side of the moving contact 410 close to the stationary contact 420.

[0088] Furthermore, the first connecting part 412 is provided with an oblong hole, and the rotating shaft 413 is rotatably engaged with the oblong hole.

[0089] Therefore, under the action of the first elastic member 1100, the range of motion of the lever structure formed by the second connecting part 414 of the moving contact 410 corresponds to the distance that the rotating shaft 413 can slide in the oblong hole. In this way, the moving contact 410 can rotate in a lever structure under the action of the elastic force of the first elastic member 1100 to increase the force when closing, and can also provide the moving contact 410 away from the stationary contact 420 without the form of a lever structure when opening, so as to speed up the opening speed between the moving contact 410 and the stationary contact 420.

[0090] The second elastic element 1200 is used to cooperate with the armature assembly 500 to deform and store energy in cooperation with the armature assembly 500 during the opening process of the contact mechanism 400, and to release energy during the closing process to apply an elastic force to the armature assembly 500 to help the contact mechanism close.

[0091] Similarly, when the moving contact 410 and the stationary contact 420 are in the open state, the second elastic element 1200 abuts against the armature assembly 500 and is in a compressed state, so as to provide an elastic force for the armature assembly 500, so that the armature assembly 500 has a rotational tendency to drive the moving contact 410 to close. In the process of the coil assembly 200 being energized to drive the armature assembly 500 to move and drive the moving contact 410 to close, it is also subject to the elastic force of the second elastic element 1200, which further increases the closing speed of the moving contact 410 and the stationary contact 420.

[0092] Optionally, both the first elastic element 1100 and the second elastic element 1200 are spring sheet structures. Of course, in other embodiments of this application, the first elastic element 1100 and the second elastic element 1200 may also be other elastic structures, which are not specifically limited here.

[0093] It should also be noted that in this application, either the first elastic element 1100 or the second elastic element 1200 can be set arbitrarily, or they can be set simultaneously, without any specific limitation here.

[0094] Furthermore, the stationary contact 420 includes a stationary contact portion 421 and a lead-out section 422 connected to each other, and the terminal group 700 includes a first terminal 710 and a second terminal 720. The lead-out section 422 is connected to the first terminal 710, and the moving contact 410 is connected to the second terminal 720.

[0095] In other words, the lead-out end of the stationary contact 420 is composed of a two-section structure of lead-out section 422 and first terminal 710, which reduces the manufacturing difficulty of the lead-out end of the stationary contact 420 and facilitates its assembly.

[0096] Furthermore, the lead-out section 422 includes a first section 423 and a second section 424, with the stationary contact 421, the first section 423, and the second section 424 connected in sequence.

[0097] When the contact mechanism 400 and terminal group 700 are energized, the current flow direction of the second segment 424 is opposite to that of the moving contact 410. At this time, the magnetic field generated by the second segment 424 acts on the moving contact 410, which can increase the contact pressure between the moving contact 410 and the stationary contact 420, thereby improving the short-circuit withstand capability of the load switch 10. Moreover, the current flow direction of the first segment 423 and the second segment 424 is perpendicular, which can further increase the contact pressure between the moving contact 410 and the stationary contact 420, thereby further improving the short-circuit withstand capability of the load switch 10.

[0098] It is worth mentioning that the first terminal 710 and the second terminal 720 both extend from the same side of the mounting housing 100 and extend along the second direction Y, thus facilitating the connection of the first terminal 710 and the second terminal 720 to an external power source or other electrical components.

[0099] Furthermore, such as Figure 8 and Figure 9 As shown, the arc-extinguishing chamber 600 includes a plurality of grid plates 610. Each grid plate 610 includes a first arc-extinguishing part 611 and a second arc-extinguishing part 612 connected at an angle (i.e., the grid plate 610 is generally L-shaped or U-shaped). The structural design of the grid plate 610 improves the arc-extinguishing performance of the arc-extinguishing element at least on both sides of the moving contact 411 and / or the stationary contact 421. Furthermore, the grid plate 610 is L-shaped, and the first arc-extinguishing part 611 and the first segment 423 are arranged opposite each other in the third direction Z, which helps the arc to move towards the first arc-extinguishing part 611 and facilitates the arc to enter the arc-extinguishing chamber 600.

[0100] Furthermore, the second arc-extinguishing part 612 is mainly used to cut the electric arc. Due to the small space inside the load switch, the thickness of the second arc-extinguishing part 612 (i.e. the extension length of the second arc-extinguishing part 612 along the second direction Y) is usually small, resulting in a poor arc-extinguishing effect of the load switch. However, in this embodiment, the extension length of the second arc-extinguishing part 612 along the second direction Y is greater than or equal to 1 / 3 of the extension length of the mounting housing 100 along the third direction Z, which greatly improves the arc-extinguishing performance.

[0101] Furthermore, the arc-extinguishing chamber 600 also includes a first arc-inducing plate 620 and a second arc-inducing plate 630 disposed on both sides of a plurality of grid plates. The first arc-inducing plate 620 is adjacent to the stationary contact 420 and is used to induce an arc in the stationary contact 420 so that the arc root is transferred from the stationary contact 420 to the first arc-inducing plate 620. The second arc-inducing plate 630 is correspondingly disposed with the moving contact 410 and is used to induce an arc in the moving contact 410. After the moving contact 410 is opened, the end of the moving contact 410 corresponds to the arc-inducing angle of the second arc-inducing plate 630.

[0102] Furthermore, in order to further improve the short-circuit withstand capability of the load switch 10, the load switch 10 also includes a magnetizing element 1300.

[0103] Specifically, at least a portion of the magnetizing element 1300 is located on one or both sides of the moving contact 410 along the third direction Z; and / or, at least a portion of the magnetizing element 1300 is located on the moving contact 410 along the first direction X and close to the stationary contact 420.

[0104] It should be noted that at least a portion of the magnetizing element 1300 is located on one or both sides of the moving contact 410 in the third direction Z, and at least another portion and the second segment 424 of the stationary contact 420 are located on both sides of the moving contact 410 in the first direction X, thereby further increasing the contact pressure between the moving contact 410 and the stationary contact 420 in its energized state, thereby further improving the short-circuit withstand capability of the load switch 10.

[0105] In this embodiment, the magnetizing component 1300 has a U-shaped structure and is fixedly installed on the side of the moving contact 410 near the stationary contact 420. For ease of tooling, the U-shaped structure is a split type.

[0106] Furthermore, at least a portion of the projection of the magnetizing element 1300 along the first direction X coincides with at least a portion of the projection of the electromagnetic drive mechanism along the first direction X, so that the magnetizing element 1300 can shield the electromagnetic drive mechanism from external magnetic sources; further, it coincides with at least a portion of the projection of the armature assembly 500 of the electromagnetic drive mechanism along the first direction X.

[0107] It is worth mentioning that, in order to save installation space and make full use of the internal space of the mounting housing 100, the first elastic element 1100 is mounted on the magnetizing element 1300.

[0108] In summary, this utility model embodiment provides a load switch 10. By arranging the electromagnetic drive mechanism and contact mechanism 400 sequentially along the first direction X, and the arc-extinguishing chamber 600, contact mechanism 400, and terminal group 700 sequentially along the second direction Y, the coil assembly 200, yoke assembly 300, contact mechanism 400, armature assembly 500, arc-extinguishing chamber 600, and terminal group 700 are arranged neatly and compactly, resulting in a reasonable layout. This not only reduces the overall size of the load switch 10 but also supports the development of the load switch 10 towards thinner and more integrated designs. Furthermore, the reasonably arranged load switch 10 provides more installation space for the arc-extinguishing chamber 600, thereby increasing its volume and enhancing the arc-extinguishing capacity, thus improving the safety and stability of the load switch 10.

[0109] Furthermore, this utility model embodiment also provides an electricity meter, including a housing and a load switch 10 as described in the above embodiment. The load switch 10 is disposed in the housing, and the coil assembly 200 is located in the middle of the housing. Therefore, the influence of external magnetic fields in any direction on the coil assembly 200 can be reduced.

[0110] Furthermore, the coil assembly 200 includes a first coil 210 and a second coil 220. Since the external magnetic field poles are usually N or S poles, even if the coil assembly 200 is affected by the external magnetic field, the N and S poles generated by the first coil 210 and the second coil 220 can cancel out the influence of the external magnetic field. Specifically, while the external magnetic field reduces the magnetic field of one of the magnetic poles generated by the first coil 210 and the second coil 220, it also increases the magnetic field of the other magnetic pole generated by the first coil 210 and the second coil 220. This ensures that the armature assembly 500 can always be subjected to a sufficiently large magnetic force to rotate rapidly and drive the contact 410 assembly to close or open, thereby improving the operational stability and environmental adaptability of the load switch 10.

[0111] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A load switch, characterized in that, include: A coil assembly (200) comprising a first coil (210) and a second coil (220); A yoke assembly (300) for forming a series magnetic flux path between the first coil (210) and the second coil (220); Contact mechanism (400); An armature assembly (500) is disposed between the first coil (210) and the second coil (220). The armature assembly (500) is connected to the contact mechanism (400) for driving the contact mechanism (400) to close or open under the action of a magnetic field.

2. The load switch according to claim 1, characterized in that, The axes of the first coil (210) and the second coil (220) are arranged in parallel, and the armature assembly (500) is located between the axes of the first coil (210) and the second coil (220).

3. The load switch according to claim 2, characterized in that, The axes of the first coil (210) and the second coil (220) extend along a first direction (X), and the first coil (210), the armature assembly (500), and the second coil (220) are arranged along a second direction (Y), with the first direction (X) being perpendicular to the second direction (Y).

4. The load switch according to claim 2, characterized in that, The yoke assembly (300) includes a second yoke (320) and two first yokes (310), and the coil assembly (200) further includes at least two iron cores (230), with the two iron cores (230) respectively passing through the first coil (210) and the second coil (220); One end of the core (230) of the first coil (210) is connected to one of the first yokes (310), and the other end is connected to the second yoke (320); one end of the core (230) of the second coil (220) is connected to another of the first yokes (310), and the other end is connected to the second yoke (320); the two first yokes (310) are respectively disposed on both sides of the armature assembly (500).

5. The load switch according to claim 4, characterized in that, The first yoke (310) and the second yoke (320) are planar, and the second yoke (320), the first yoke (310) and the contact mechanism (400) are arranged sequentially along the first direction (X).

6. The load switch according to claim 4, characterized in that, The armature assembly (500) includes a first armature (510) and a second armature (520), a magnet (530) and a rotating shaft (540). The magnet (530) is disposed between the first armature (510) and the second armature (520). The rotating shaft (540) is rotatably disposed in the mounting housing (100). The rotating shaft (540) is located between the two first yokes (310) and the rotating shaft (540) and the two first yokes (310) are arranged along a second direction (Y). The axis of the rotating shaft (540) extends along a third direction (Z). The first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

7. The load switch according to claim 1, characterized in that, The coil assembly (200) further includes two first leads (240) and two second leads (250), which are connected to an external excitation to form an electrical circuit.

8. The load switch according to claim 7, characterized in that, The first lead-out pin (240) and the corresponding iron core (230) and the yoke assembly (300) are symmetrically arranged with the second lead-out pin (250) and the corresponding iron core (230) and the yoke assembly (300).

9. The load switch according to claim 7, characterized in that, The load switch also includes an electronic component (800), the first lead (240) and the second lead (250) are both electrically connected to the electronic component (800), and the electronic component (800) is provided with a power receiving part (810) for connecting to an external power source.

10. An electricity meter, characterized in that, Includes a housing and a load switch as described in any one of claims 1-9, wherein the load switch is disposed within the housing and the coil assembly (200) is located in the middle of the housing.

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