A load switch and an electric meter

Abstract

The utility model discloses a kind of load switch and electric meter, it is related to low-voltage electrical apparatus technical field.The load switch includes shell, magnetic circuit component, armature assembly, magnetic shield and contact mechanism.Magnetic circuit component, armature assembly and contact mechanism are all arranged in shell, two yokes are arranged along first direction, coil and armature assembly are arranged along second direction, shielding baffle is arranged on the side of armature assembly along first direction, first shielding plate is arranged on the side of coil away from armature assembly along second direction, third shielding plate is arranged on the side of armature assembly away from coil along second direction, second shielding plate and fourth shielding plate are oppositely arranged on the two sides of armature assembly along third direction, first direction, second direction and third direction are perpendicular to each other.The load switch provided in the application can enhance the anti-magnetic interference performance without affecting the normal operation of the magnetic circuit component, prevent misoperation caused by external magnetic field, and improve the switching precision and switch accuracy.

Description

Technical Field

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

[0002] The function of a load switch is to control the on / off state of the load in a circuit, so as to keep electrical appliances running safely. It is widely used in home appliances, remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of the important control components.

[0003] Currently, load switches generally use magnetic circuit components to drive the armature assembly, thereby causing the moving contact to open and close with the stationary contact. However, current load switches have poor resistance to magnetic interference and are prone to malfunction under the influence of external magnetic fields, resulting in low opening and closing accuracy and affecting the switch's overall accuracy. Therefore, there is an urgent need for a load switch product with strong resistance to magnetic interference and high opening and closing accuracy. Utility Model Content

[0004] The purpose of this application is to provide a load switch and an electricity meter that can enhance the anti-magnetic interference performance without affecting the normal operation of the magnetic circuit components, prevent malfunctions caused by external magnetic fields, and improve the opening and closing accuracy and switching accuracy.

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

[0006] A first aspect of this application provides a load switch, including a housing, a magnetic circuit assembly, an armature assembly, a magnetic shield, and a contact mechanism. The magnetic circuit assembly, armature assembly, and contact mechanism are all disposed within the housing. The magnetic circuit assembly includes a coil, an iron core passing through the coil, and two yokes connected to the iron core. The two yokes are arranged along a first direction. The coil and armature assembly are arranged along a second direction. The magnetic shield includes a shielding baffle, a first shielding plate, a second shielding plate, a third shielding plate, and a fourth shielding plate. The shielding baffle is disposed on one side of the armature assembly along the first direction. The first shielding plate is disposed on the side of the coil away from the armature assembly along the second direction. The third shielding plate is disposed on the side of the armature assembly away from the coil along the second direction. The second and fourth shielding plates are disposed opposite each other on both sides of the armature assembly along a third direction. The first, second, and third directions are perpendicular to each other.

[0007] As one possible implementation, the shielding baffle is disposed near the yoke, and the shielding baffle is disposed at intervals from the yoke along the second direction.

[0008] As one possible implementation, the minimum distance between the shielding baffle and the yoke along the second direction is greater than or equal to the minimum distance between the yoke and the second shielding plate; the minimum distance between the shielding baffle and the yoke along the second direction is greater than or equal to the minimum distance between the yoke and the fourth shielding plate.

[0009] As one possible implementation, the magnetic shielding component is disposed outside the housing.

[0010] As one possible implementation, the first shielding plate includes a first shielding block and a second shielding block that are spaced apart and located on the same plane. The first shielding block is connected to the second shielding block in sequence through the second shielding plate, the third shielding plate, and the fourth shielding plate.

[0011] As one possible implementation, the shielding baffle is connected to the third shielding plate;

[0012] Alternatively, the shielding baffle is connected to the second or fourth shielding plate;

[0013] Alternatively, the shielding baffle is connected between the second shielding plate and the fourth shielding plate;

[0014] Alternatively, the shielding baffle can be connected to the second, third, and fourth shielding plates simultaneously.

[0015] As one possible implementation, there are two shielding baffles, one of which is connected to the third shielding plate, and the other shielding baffle is connected to the second or fourth shielding plate.

[0016] As one possible implementation, the load switch also includes a transmission component disposed within the housing, the axial direction of the coil is along a first direction, the armature assembly and the contact mechanism are arranged along the first direction, and the armature assembly is connected to the contact mechanism through the transmission component.

[0017] As one possible implementation, the load switch further includes a wiring assembly, which is disposed outside the housing and located on the side of the contact mechanism away from the armature assembly along the first direction, and is connected to the contact mechanism; the wiring assembly and the shielding baffle are respectively disposed on both sides of the contact mechanism along the first direction.

[0018] A second aspect of this application provides an electricity meter including the load switch described above. This electricity meter enhances its anti-magnetic interference performance while avoiding affecting the normal operation of the magnetic circuit components, preventing malfunctions caused by external magnetic fields, and improving the accuracy of opening and closing the circuit and the precision of the switch.

[0019] The beneficial effects of the embodiments of this application include:

[0020] The load switch includes a housing, a magnetic circuit assembly, an armature assembly, a magnetic shield, and a contact mechanism. The magnetic circuit assembly, armature assembly, and contact mechanism are all housed within the housing. The magnetic circuit assembly includes a coil, an iron core passing through the coil, and two yokes connected to the iron core. The two yokes are arranged along a first direction. The coil and armature assembly are arranged along a second direction. The magnetic shield includes a shielding baffle, a first shielding plate, a second shielding plate, a third shielding plate, and a fourth shielding plate. The shielding baffle is located on one side of the armature assembly along the first direction. The first shielding plate is located on the side of the coil away from the armature assembly along the second direction. The third shielding plate is located on the side of the armature assembly away from the coil along the second direction. The second and fourth shielding plates are arranged opposite each other on both sides of the armature assembly along a third direction. The first, second, and third directions are perpendicular to each other. The load switch provided in this application, through a magnetic shield surrounding the armature assembly and a shielding baffle disposed on one side of the armature assembly along a first direction, can, on the one hand, enclose the armature assembly circumferentially to prevent external magnetic fields from affecting the armature assembly from the circumference, enhance anti-magnetic interference performance, prevent malfunctions caused by external magnetic fields, and improve the opening and closing accuracy and switching accuracy; on the other hand, it can shield the armature assembly along the first direction to prevent external magnetic fields from affecting the armature assembly from the first direction, further enhancing anti-magnetic interference performance, improving opening and closing accuracy and switching accuracy, and preventing the shielding baffle from affecting the magnetic circuit assembly, ensuring the normal operation of the magnetic circuit assembly. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the structure of the first load switch provided in the first embodiment of the present invention;

[0023] Figure 2 This is a structural schematic diagram of the load switch from a second perspective, provided in the first embodiment of the present invention.

[0024] Figure 3 This is a structural schematic diagram of a load switch from a third-view perspective, provided for the first embodiment of the present invention.

[0025] Figure 4 A schematic diagram of the structure in which the armature assembly of the load switch provided in the first embodiment of this utility model is connected to the contact mechanism via a transmission component;

[0026] Figure 5This is a structural schematic diagram of the contact mechanism in a load switch provided in other embodiments of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the load switch provided in the second embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the load switch provided in the third embodiment of the present invention.

[0029] Icons: 100-Load switch; 110-Housing; 111-Mounting plate; 1111-Shaft; 112-U-shaped shaft; 121-Magnetic circuit assembly; 1211-Coil; 1212-Core; 1213-Yoke; 122-Armature assembly; 123-Transmission component; 130-Contact mechanism; 131-Moving contact; 1311-First end; 1312-Second end; 132-Stationary contact; 140-Magnetic shielding component; 141-Shielding baffle; 142-First shielding plate; 1421-First shielding block; 1422-Second shielding block; 143-Second shielding plate; 144-Third shielding plate; 145-Fourth shielding plate; 150-Wiring assembly; 160-Arc extinguishing assembly. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] In the description of this utility model, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," 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 utility model product 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," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" 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.

[0035] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0036] First Embodiment

[0037] Please refer to the reference. Figures 1 to 4 This utility model provides a load switch 100 for interrupting and closing load current. It enhances anti-magnetic interference performance without affecting the normal operation of the magnetic circuit assembly 121, prevents malfunctions caused by external magnetic fields, and improves the accuracy of opening and closing as well as the precision of the switch.

[0038] The load switch 100 includes a housing 110, a magnetic circuit assembly 121, an armature assembly 122, a magnetic shield 140, and a contact mechanism 130. The magnetic circuit assembly 121, the armature assembly 122, and the contact mechanism 130 are all disposed within the housing 110. The magnetic circuit assembly 121 includes a coil 1211, an iron core 1212 passing through the coil 1211, and two yokes 1213 connected to the iron core 1212. The two yokes 1213 are arranged along a first direction. The coil 1211 and the armature assembly 122 are arranged along a second direction. The magnetic shield 140 includes a shielding baffle 141, a first shielding plate 142, a second shielding plate 143, a third shielding plate 144, and a fourth shielding plate 145. Among them, the shielding baffle 141 is disposed on one side of the armature assembly 122 along the first direction, the first shielding plate 142 is disposed on the side of the coil 1211 away from the armature assembly 122 along the second direction, the third shielding plate 144 is disposed on the side of the armature assembly 122 away from the coil 1211 along the second direction, and the second shielding plate 143 and the fourth shielding plate 145 are disposed opposite to each other on both sides of the armature assembly 122 along the third direction, with the first direction, the second direction and the third direction being perpendicular to each other.

[0039] The load switch 100 provided in this application, through a magnetic shield 140 surrounding the armature assembly 122 and a shielding baffle 141 disposed on one side of the armature assembly 122 along a first direction, can, on the one hand, enclose and shield the armature assembly 122 circumferentially, preventing external magnetic fields from affecting the armature assembly 122 circumferentially, enhancing anti-magnetic interference performance, preventing malfunctions due to external magnetic fields, and improving opening and closing accuracy and switching accuracy; on the other hand, it can shield the armature assembly 122 along the first direction, preventing external magnetic fields from affecting the armature assembly 122 from the first direction, further enhancing anti-magnetic interference performance, improving opening and closing accuracy and switching accuracy, and preventing the shielding baffle 141 from affecting the magnetic circuit assembly 121, ensuring the normal operation of the magnetic circuit assembly 121.

[0040] Furthermore, the shielding baffle 141 is positioned adjacent to the yoke 1213, meaning that the yoke 1213 has two opposing sides arranged along the first direction, and the shielding baffle 141 is located on the side closer to the yoke 1213. Specifically, the shielding baffle 141 is spaced apart from the yoke 1213 along the second direction to avoid affecting the yoke 1213 and ensure the normal operation of the magnetic circuit assembly 121.

[0041] Specifically, the magnetic shielding component 140 is disposed outside the housing 110 for easy installation. The first shielding plate 142 and the third shielding plate 144 are arranged parallel to each other at intervals, and the second shielding plate 143 and the fourth shielding plate 145 are arranged parallel to each other at intervals. The first shielding plate 142 is perpendicular to the second shielding plate 143. The first shielding plate 142, the second shielding plate 143, the third shielding plate 144, and the fourth shielding plate 145 together form a rectangle. By rationally arranging the first shielding plate 142, the second shielding plate 143, the third shielding plate 144, and the fourth shielding plate 145, the armature assembly 122 can be effectively enclosed and shielded circumferentially, facilitating installation and providing strong anti-magnetic interference performance.

[0042] In one possible implementation, one yoke 1213 is connected to one end of the iron core 1212 and extends into one end of the armature assembly 122, and another yoke 1213 is connected to the other end of the iron core 1212 and extends into the other end of the armature assembly 122. One yoke 1213, the iron core 1212 and the other yoke 1213 are arranged sequentially along a first direction. The two yokes 1213 work together to drive the armature assembly 122 to move.

[0043] It should be noted that the yoke 1213 drives the armature assembly 122 to move through magnetic force, and the magnetic shield 140 has a magnetic shielding function. Therefore, it is necessary to ensure that there is a preset distance between the yoke 1213 and the magnetic shield 140 in order to avoid the magnetic shield 140 from affecting the yoke 1213 and ensure that the yoke 1213 can stably and reliably drive the armature assembly 122 to move, that is, to ensure the normal operation of the magnetic circuit assembly 121.

[0044] In this embodiment, the yoke 1213 is spaced apart from the first shielding plate 142, the second shielding plate 143, the third shielding plate 144, and the fourth shielding plate 145, meaning that none of the first shielding plate 142, the second shielding plate 143, the third shielding plate 144, or the fourth shielding plate 145 will affect the yoke 1213. Furthermore, the minimum distance between the shielding baffle 141 and the yoke 1213 along the second direction is greater than or equal to the minimum distance between the yoke 1213 and the second shielding plate 143; the minimum distance between the shielding baffle 141 and the yoke 1213 along the second direction is greater than or equal to the minimum distance between the yoke 1213 and the fourth shielding plate 145, to avoid the shielding baffle 141 affecting the yoke 1213 and ensure the normal operation of the magnetic circuit assembly 121.

[0045] In one possible implementation, the first shielding plate 142 includes a first shielding block 1421 and a second shielding block 1422 spaced apart and located on the same plane. The first shielding block 1421 is connected to the second shielding block 1422 sequentially via a second shielding plate 143, a third shielding plate 144, and a fourth shielding plate 145. A gap exists between the first shielding block 1421 and the second shielding block 1422 to facilitate installation. In this embodiment, the shielding baffle 141 is connected to the third shielding plate 144 and is perpendicular to both the third shielding plate 144 and the second shielding plate 143. Specifically, the magnetic shielding component 140 is formed by folding a plate-like structure adapted to its shape, wherein the shielding baffle 141 is formed by folding the third shielding plate 144. By folding the plate-like structure, the magnetic shielding component 140 can be obtained quickly, facilitating production and processing and reducing production costs.

[0046] However, this is not the only option. In other embodiments, the first shielding plate 142, the second shielding plate 143, the third shielding plate 144, and the fourth shielding plate 145 are connected end to end. The magnetic shielding component 140 is made by stamping, which can also play the role of anti-magnetic interference performance and improve production efficiency. In this case, the shielding baffle 141 is connected to the second shielding plate 143, or the shielding baffle 141 is connected to the third shielding plate 144, or the shielding baffle 141 is connected to the fourth shielding plate 145, or the shielding baffle 141 is connected between the second shielding plate 143 and the fourth shielding plate 145, or the shielding baffle 141 is simultaneously connected to the second shielding plate 143, the third shielding plate 144, and the fourth shielding plate 145.

[0047] In one possible implementation, the load switch 100 further includes a transmission member 123 disposed within the housing 110. The axial direction of the coil 1211 is along a first direction, and the armature assembly 122 and the contact mechanism 130 are arranged along the first direction. The armature assembly 122 is connected to the contact mechanism 130 through the transmission member 123. The armature assembly 122 is used to drive the contact mechanism 130 to open and close the circuit under the drive of the magnetic circuit assembly 121 via the transmission member 123.

[0048] In one possible implementation, the contact mechanism 130 includes a moving contact 131 and a stationary contact 132. The moving contact 131 is movably connected to the transmission member 123, and the armature assembly 122 can drive the moving contact 131 through the transmission member 123, so that the first end 1311 of the moving contact 131 moves around the second end 1312, thereby causing the first end 1311 to move closer to or further away from the stationary contact 132, thereby realizing the closing or opening function. Further, a mounting plate 111 is provided inside the housing 110, and the rotating shaft 1111 on the mounting plate 111 is rotatably engaged with the second end 1312 to realize the limiting function of the second end 1312, thereby improving the stability of the opening and closing of the first end and the stationary contact 132.

[0049] Please refer to Figure 5 However, it is not limited to this. In other embodiments, instead of setting the mounting plate 111, a U-shaped rotating shaft 112 can be set. Both ends of the U-shaped rotating shaft 112 are inserted into the housing 110 and rotate with the second end 1312. This can also achieve the limiting function of the second end 1312 and improve the stability of the opening and closing of the first end 1311 and the stationary contact 132.

[0050] Please continue to refer to Figures 1 to 4 As one possible implementation, the load switch 100 further includes a wiring assembly 150. The wiring assembly 150 is disposed outside the housing 110 and located on the side of the contact mechanism 130 away from the armature assembly 122 along the first direction, and is connected to the contact mechanism 130. The wiring assembly 150 is used to connect the contact mechanism 130 and external equipment to achieve electrical connection between the load switch 100 and external equipment. Specifically, the wiring assembly 150 and the shielding baffle 141 are respectively disposed on both sides of the contact mechanism 130 along the first direction.

[0051] As one possible implementation, the load switch 100 also includes an arc-extinguishing assembly 160. The arc-extinguishing assembly 160 is disposed inside the housing 110, and the arc-extinguishing assembly 160 and the contact mechanism 130 are arranged sequentially along the second direction. The arc-extinguishing assembly 160 is used to extinguish the arc generated when the contact mechanism 130 is opened.

[0052] A second aspect of this application provides an electricity meter (not shown) 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.

[0053] Second Embodiment

[0054] Please refer to Figure 6 This utility model embodiment provides a load switch 100. Compared with the first embodiment, the difference in this embodiment is that the connection position of the shielding baffle 141 is different.

[0055] In this embodiment, the shielding baffle 141 is connected to the second shielding plate 143. The shielding baffle 141 is formed by folding the second shielding plate 143, which can play a good role in resisting magnetic interference, preventing malfunctions caused by external magnetic fields, and improving the opening and closing accuracy and switching accuracy. However, it is not limited to this. In other embodiments, the shielding baffle 141 is connected to the fourth shielding plate 145. The shielding baffle 141 is formed by folding the fourth shielding plate 145, which can also play a good role in resisting magnetic interference.

[0056] The beneficial effects of the load switch 100 provided in this embodiment are the same as those in the first embodiment, and will not be repeated here.

[0057] Third Embodiment

[0058] Please refer to Figure 7 This utility model embodiment provides a load switch 100. Compared with the first embodiment, the difference in this embodiment is that the number of shielding baffles 141 is different.

[0059] In this embodiment, there are two shielding baffles 141. One shielding baffle 141 is connected to the third shielding plate 144, and the other shielding baffle 141 is connected to the second shielding plate 143 or the fourth shielding plate 145. The two shielding baffles 141 are overlapped and are both located on the side of the armature assembly 122 away from the contact mechanism 130 along the first direction. The two shielding baffles 141 work together to further improve the magnetic shielding effect, prevent the armature assembly 122 from being affected by the external magnetic field, and improve the opening and closing accuracy and switching accuracy.

[0060] The beneficial effects of the load switch 100 provided in this embodiment are the same as those in the first embodiment, and will not be repeated here.

[0061] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements 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, The device includes a housing (110), a magnetic circuit assembly (121), an armature assembly (122), a magnetic shield (140), and a contact mechanism (130). The magnetic circuit assembly (121), the armature assembly (122), and the contact mechanism (130) are all housed within the housing (110). The magnetic circuit assembly (121) includes a coil (1211), an iron core (1212) passing through the coil (1211), and two yokes (1213) connected to the iron core (1212). The two yokes (1213) are arranged along a first direction. The coil (1211) and the armature assembly (122) are arranged along a second direction. The magnetic shield (140) includes a shielding baffle (141), a first shielding plate (130), and a second shielding plate (140). 142), a second shielding plate (143), a third shielding plate (144), and a fourth shielding plate (145), wherein the shielding baffle (141) is disposed on one side of the armature assembly (122) along the first direction, the first shielding plate (142) is disposed on the side of the coil (1211) away from the armature assembly (122) along the second direction, the third shielding plate (144) is disposed on the side of the armature assembly (122) away from the coil (1211) along the second direction, the second shielding plate (143) and the fourth shielding plate (145) are disposed opposite to each other on both sides of the armature assembly (122) along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The load switch according to claim 1, characterized in that, The shielding baffle (141) is disposed adjacent to the yoke (1213), and the shielding baffle (141) is disposed at intervals from the yoke (1213) along the second direction.

3. The load switch according to claim 2, characterized in that, The minimum distance between the shielding baffle (141) and the yoke (1213) along the second direction is greater than or equal to the minimum distance between the yoke (1213) and the second shielding baffle (143); the minimum distance between the shielding baffle (141) and the yoke (1213) along the second direction is greater than or equal to the minimum distance between the yoke (1213) and the fourth shielding baffle (145).

4. The load switch according to claim 1, characterized in that, The magnetic shield (140) is disposed outside the outer shell (110).

5. The load switch according to claim 1, characterized in that, The first shielding plate (142) includes a first shielding block (1421) and a second shielding block (1422) spaced apart and located on the same plane. The first shielding block (1421) is connected to the second shielding block (1422) in sequence through the second shielding plate (143), the third shielding plate (144), and the fourth shielding plate (145).

6. The load switch according to claim 1, characterized in that, The shielding baffle (141) is connected to the third shielding plate (144). Alternatively, the shielding baffle (141) is connected to the second shielding plate (143) or the fourth shielding plate (145). Alternatively, the shielding baffle (141) is connected between the second shielding plate (143) and the fourth shielding plate (145); Alternatively, the shielding baffle (141) can be connected to the second shielding plate (143), the third shielding plate (144), and the fourth shielding plate (145) simultaneously.

7. The load switch according to claim 1, characterized in that, The number of shielding baffles (141) is two, wherein one shielding baffle (141) is connected to the third shielding plate (144), and the other shielding baffle (141) is connected to the second shielding plate (143) or the fourth shielding plate (145).

8. The load switch according to any one of claims 1-7, characterized in that, The load switch also includes a transmission component (123) disposed within the housing (110), the axial direction of the coil (1211) is along the first direction, the armature assembly (122) and the contact mechanism (130) are arranged along the first direction, and the armature assembly (122) is connected to the contact mechanism (130) through the transmission component (123).

9. The load switch according to any one of claims 1-7, characterized in that, The load switch further includes a wiring assembly (150), which is disposed outside the housing (110) and located on the side of the contact mechanism (130) away from the armature assembly (122) along the first direction, and is connected to the contact mechanism (130); the wiring assembly (150) and the shielding baffle (141) are respectively disposed on both sides of the contact mechanism (130) along the first direction.

10. An electricity meter, characterized in that, Including the load switch as described in any one of claims 1-9.

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