Load switch and ammeter

Abstract

The utility model provides a load switch and an ammeter, and relates to the technical field of electrical equipment. The load switch comprises a shell, and an electromagnetic assembly, an armature piece, a moving contact and a transmission rod which are arranged in the shell. The armature piece and the moving contact are movably arranged in the shell; one end of the transmission rod is connected with the armature piece, and the other end is connected with the moving contact. The partial projection of the transmission rod on the plane where the moving path of the moving contact is located coincides with the partial projection of the moving contact, so that the extension length of the transmission rod relative to the moving contact is longer, the installation height of the transmission rod relative to the shell can be reduced by moving the whole transmission rod downwards, the installation space of the transmission rod and the moving contact is reduced, and the installation efficiency is improved. Therefore, the spatial layout of the load switch is optimized, the layout of the load switch is more reasonable, and the product adaptability is improved.

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] Load switches, as core equipment in power systems used for circuit connection, disconnection, and protection, operate by using a linkage to drive a moving contact to achieve contact or separation with the stationary contact. However, with the continuous improvement of market demands and technological advancements, traditional load switch designs can no longer fully meet modern application requirements. In traditional designs, a moving spring is typically used as the moving contact to achieve connection and separation with the stationary contact.

[0003] However, with increasing product performance requirements, more and more load switches need to use plate-shaped contact plates as moving contacts. This new design can better adapt to complex electrical environments while improving the load capacity and service life of the switch. However, this improvement also brings new technical challenges: how to provide a connection structure that allows for a more rational layout of the load switch, effectively integrates the plate-shaped moving contact plate into the load switch, and achieves a reliable connection between the moving contact plate and other components. Utility Model Content

[0004] This utility model provides a load switch and electricity meter that optimizes the spatial layout, making the spatial layout more reasonable.

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

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

[0007] case;

[0008] An electromagnetic component, wherein the electromagnetic component is disposed in the housing;

[0009] An armature component, wherein the armature component is movably disposed on the housing;

[0010] A moving contact, which is movably disposed within the housing;

[0011] A transmission rod, one end of which is connected to the armature and the other end of which is connected to the moving contact, wherein a portion of the projection of the transmission rod on the plane of the moving contact's movement path coincides with a portion of the projection of the moving contact.

[0012] In an optional embodiment, the load switch further includes a stationary contact, and the moving contact includes a first wall, a side wall, and a second wall. The first wall is disposed facing the armature, and the second wall is disposed away from the armature. The first wall or the second wall is provided with a moving contact portion for contacting the stationary contact, and the transmission rod is connected to the side wall or the second wall.

[0013] In an optional embodiment, one end of the moving contact is provided with a moving contact portion and the other end is provided with a rotating portion. The rotating portion is movably disposed in the housing. The moving contact is also provided with a connecting portion, which is connected to the transmission rod. The connecting portion is located between the moving contact portion and the rotating portion and is adjacent to the moving contact portion.

[0014] In an optional embodiment, the load switch further includes a stationary contact and a first lead-out member connected to each other. The lead-out member and the moving contact are arranged along a first direction, and the stationary contact and the moving contact are arranged along a second direction, wherein the first direction is perpendicular to the second direction.

[0015] In an optional embodiment, one end of the moving contact is provided with a connecting part, which is connected to the transmission rod, and the other end is provided with a rotating part, which is movably disposed in the housing. The moving contact is also provided with a moving contact part, which is located between the connecting part and the rotating part and is adjacent to the connecting part.

[0016] In an optional embodiment, the armature is provided with a transmission arm, the transmission arm is provided with a first oblong hole, and one end of the transmission rod is movably engaged with the first oblong hole.

[0017] In an optional embodiment, the load switch further includes a stationary contact and a first lead-out member connected together. The first lead-out member includes a first segment, a second segment, and a third segment connected in sequence. The stationary contact is connected to the first segment. The stationary contact and / or the second segment extend along a first direction. The stationary contact, the second segment, and the third segment are arranged along a second direction. The first segment and the moving contact are arranged along a third direction.

[0018] Wherein, the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the third direction.

[0019] In an optional embodiment, the load switch further includes a first elastic element, the housing is provided with a rotating shaft, the moving contact is provided with a moving contact portion, a rotating portion and an abutting portion in sequence along its extension direction, the rotating portion is provided with a second oblong hole, and the rotating shaft is movably engaged with the second oblong hole; the first elastic element is located on the side of the moving contact away from the transmission rod, and the first elastic element is used to apply an elastic force to the abutting portion when the moving contact and the stationary contact are closed.

[0020] In an optional embodiment, the housing is further provided with a limiting post located on the side of the moving contact near the transmission rod. The limiting post is used to abut against the moving contact when the moving contact is open, so that the first elastic member is also used to apply an elastic force to the abutting part when the moving contact and the stationary contact are open.

[0021] In an optional embodiment, the electromagnetic component includes a coil and a yoke connected to the coil, the axis of the coil extending along a first direction, and the coil, the armature and the moving contact arranged sequentially along a second direction perpendicular to the first direction.

[0022] In an optional embodiment, the electromagnetic component includes a coil and a yoke connected to the coil. The coil and the armature are arranged sequentially in the housing along a first direction. The electromagnetic component and the moving contact are arranged sequentially along a second direction. The axis of the coil extends along the second direction, which is perpendicular to the first direction.

[0023] In an optional embodiment, the load switch further includes an arc-extinguishing chamber disposed on at least one side of the moving contact along a first direction and / or a third direction, wherein the first direction is the length direction of the housing, the third direction is the thickness direction of the housing, and the first direction and the third direction are perpendicular to each other.

[0024] In an optional embodiment, the load switch further includes a second lead-out component, which includes a fourth segment, a fifth segment, and a sixth segment connected in sequence. The fourth segment is connected to the moving contact via a flexible connection. In the closed state, the fourth segment and the sixth segment are located on opposite sides of the thickness direction of the moving contact, and the current flows in opposite directions in the fourth segment and the sixth segment.

[0025] In an optional embodiment, the load switch further includes a magnetizing element disposed on one or both sides of the moving contact in the thickness direction.

[0026] Secondly, this utility model provides an electricity meter, including a load switch as described in any of the foregoing embodiments.

[0027] The beneficial effects of the load switch and meter provided in this utility model embodiment include: the partial projection of the transmission rod on the plane where the moving contact moves coincides with the partial projection of the moving contact, that is, the transmission rod is not connected to the top wall of the moving contact facing the armature or electromagnetic component, but continues to extend and connect to other walls of the transmission rod, so that the extension length of the transmission rod relative to the moving contact is longer. In this way, the installation height of the transmission rod relative to the housing can be reduced by moving the transmission rod down as a whole, thereby reducing the installation space of the transmission rod and the moving contact, thus optimizing the spatial layout of the load switch, making the spatial layout more reasonable, especially suitable for compact electrical equipment, and thus improving product adaptability. Attached Figure Description

[0028] 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.

[0029] Figure 1 A schematic diagram of the first embodiment of the load switch provided in this utility model;

[0030] Figure 2 A partial structural schematic diagram of the first embodiment of the load switch provided in this utility model;

[0031] Figure 3 A schematic diagram of the second embodiment of the load switch provided in this utility model;

[0032] Figure 4 A partial structural schematic diagram of the second embodiment of the load switch provided in this utility model;

[0033] Figure 5 A schematic diagram of the third embodiment of the load switch provided in this utility model;

[0034] Figure 6 A schematic diagram of the first view of the fourth embodiment of the load switch provided in this utility model;

[0035] Figure 7 This is a second-view structural schematic diagram of the fourth embodiment of the load switch provided in this utility model.

[0036] Icons: 10-Load switch; 100-Housing; 110-Limit post; 120-Rotating shaft; 200-Electromagnetic assembly; 210-Coil; 220-Yoke; 300-Armature; 310-Drive arm; 311-First oblong hole; 320-Second elastic element; 400-Moving contact; 410-First wall surface; 420-Side wall; 430-Second wall surface; 440-Moving contact; 450-Rotating part; 451-Second oblong hole; 460 - Connecting part; 470 - Abutting part; 500 - Transmission rod; 600 - Stationary contact; 700 - First lead-out element; 710 - First section; 720 - Second section; 730 - Third section; 800 - First elastic element; 900 - Arc extinguishing chamber; 1000 - Second lead-out element; 1010 - Fourth section; 1020 - Fifth section; 1030 - Sixth section; 1100 - Magnetizing element; X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during 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, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0042] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0043] Load switches, as core equipment in power systems used for circuit connection, disconnection, and protection, operate by using a linkage to drive a moving contact to achieve contact or separation with the stationary contact. However, with the continuous improvement of market demands and technological advancements, traditional load switch designs can no longer fully meet modern application requirements. In traditional designs, a moving spring is typically used as the moving contact to achieve connection and separation with the stationary contact.

[0044] However, with increasing product performance requirements, more and more load switches need to use plate-shaped contact plates as moving contacts. This new design can better adapt to complex electrical environments while improving the load capacity and service life of the switch. However, this improvement also brings new technical challenges: how to effectively integrate the plate-shaped moving contact plate into the load switch without changing its overall layout, and how to achieve a reliable connection between the moving contact plate and other components.

[0045] Based on the problems existing in the current technology, please refer to Figures 1 to 7 This utility model embodiment provides a load switch 10, which is applied to electricity meters and other related electrical equipment. The load switch 10 has a reasonable connection design between the transmission rod 500 and the moving contact 400, which can reduce its impact on the electric arc and facilitate arc extinguishing, thus ensuring the stable operation of the load switch 10.

[0046] In detail, the load switch 10 includes a housing 100 and an electromagnetic assembly 200, an armature 300, a moving contact 400 and a transmission rod 500 disposed within the housing 100.

[0047] Both the armature 300 and the moving contact 400 are movably mounted on the housing 100. One end of the transmission rod 500 is connected to the armature 300, and the other end is connected to the moving contact 400. It is worth mentioning that, in order to enable the transmission rod 500 to smoothly drive the moving contact 400, the transmission rod 500 and the moving contact 400 can be connected by a hinge.

[0048] First, it should be noted that during the closing or opening process of the moving contact 400, the path taken by any point on the moving contact 400 is a straight line or a curve, and the plane on which the straight line or curve is located is the plane on which the moving contact 400 moves.

[0049] Specifically, taking the actual installation state of the load switch 10 as a reference, the plane on which the moving contact 400 moves is located is a vertical plane parallel to the front or back plate of the housing 100.

[0050] Therefore, the partial projection of the transmission rod 500 on the plane where the moving contact 400 moves coincides with the partial projection of the moving contact 400. That is, the transmission rod 500 is not connected to the top wall of the moving contact 400 facing the armature 300 or the electromagnetic component 200, but extends to connect with other walls of the transmission rod 500. On the one hand, compared with the traditional connecting rod directly connected to the moving contact 440, the connection position of the transmission rod 500 and the moving contact 400 in this application is further away from the contact point, and the vertical space corresponding to the moving contact 440 of the moving contact 400 is left empty, which facilitates arc initiation and improves the arc extinguishing capability. On the other hand, it also makes the extension length of the transmission rod 500 relative to the moving contact 400 longer. This allows the installation height of the transmission rod 500 relative to the housing 100 to be reduced by moving the transmission rod 500 as a whole downward, thereby reducing the installation space of the transmission rod 500 and the moving contact 400. This optimizes the spatial layout of the load switch 10, which is especially suitable for compact electrical equipment and thus improves product adaptability.

[0051] Specifically, the moving contact 400 includes a first wall surface 410, a side wall 420, and a second wall surface 430. The first wall surface 410 is arranged facing the armature 300, and the second wall surface 430 is arranged away from the armature 300. The transmission rod 500 is connected to the side wall 420 or the second wall surface 430, so that the connection position between the transmission rod 500 and the moving contact 400 is further away from the contact position than the existing connecting rod, which is convenient for arc extinguishing and reduces the installation height of the transmission rod 500 relative to the housing 100, thereby reducing the installation space of the transmission rod 500 and the moving contact 400, thus optimizing the spatial layout of the load switch 10.

[0052] Furthermore, the load switch 10 also includes a stationary contact 600, such as Figures 1 to 4 As shown, the second wall surface 430 is provided with a moving contact 440, which is used to contact or separate from the stationary contact 600.

[0053] Correspondingly, in this embodiment, the stationary contact 600 is disposed on one side of the second wall surface 430 of the moving contact 400.

[0054] Of course, in other embodiments of this utility model, such as Figures 5 to 7 As shown, the first wall surface 410 is provided with a movable contact 440. Since the movable contact 440 is provided on the first wall surface 410, the stationary contact 600 is provided on one side of the first wall surface 410 of the movable contact 400.

[0055] Furthermore, in some embodiments of this utility model, such as Figures 1 to 5As shown, one end of the moving contact 400 is provided with a moving contact portion 440, and the other end is provided with a rotating portion 450. The rotating portion 450 is movably disposed in the housing 100 via a rotating shaft 120. The moving contact 400 is also provided with a connecting portion 460, which is connected to the transmission rod 500. The connecting portion 460 is located between the moving contact portion 440 and the rotating portion 450 and is adjacent to the moving contact portion 440.

[0056] In other words, the transmission rod 500 is connected to the side wall 420 or the second wall surface 430 of the moving contact 400 located between the moving contact 440 and the rotating part 450. In order to facilitate pulling the moving contact 400, the connecting part 460 is also arranged away from the rotating part 450 and adjacent to the moving contact 440.

[0057] Furthermore, the armature 300 is provided with a transmission arm 310, which is provided with a first oblong hole 311. One end of the transmission rod 500 is movably engaged with the first oblong hole 311. Therefore, during the process of the electromagnetic component 200 driving the armature 300 to move, and the armature 300 driving the transmission rod 500 to move, and finally driving the moving contact 400 and the stationary contact 600 to close or open through the transmission rod 500, during the "overtravel" process, one end of the transmission rod 500 can slide along the extension direction of the first oblong hole 311, thereby reducing the movement amplitude of the armature 300 and the transmission rod 500.

[0058] In order to ensure that one end of the transmission rod 500 remains relatively stable in the first waist-shaped hole 311, a second elastic element 320 is provided on the transmission arm 310 of the armature 300, and the second elastic element 320 is compressed and acts on the transmission rod 500 so that the transmission rod 500 is always located at the bottom end of the first waist-shaped hole 311 when the circuit is closed or open.

[0059] Furthermore, the load switch 10 also includes a stationary contact 600 and a first lead-out member 700 connected to each other. The first lead-out member 700 and the moving contact 400 are arranged along a first direction X, and the stationary contact 600 and the moving contact 400 are arranged along a second direction Y. The first direction X is perpendicular to the second direction Y.

[0060] It is worth mentioning that, if we take the housing 100 as a reference, the first direction X is the length direction of the housing 100, and the second direction Y is the height direction of the housing 100. Therefore, the plane on which the moving contact 400 moves is the vertical plane on which the first direction X and the second direction Y are located.

[0061] In this embodiment, the stationary contact 600 is located on one side of the moving contact 400 along the second direction Y. That is, the stationary contact 600 can be located on the side of the moving contact 400 near the first wall surface 410, or it can be located on the side of the moving contact 400 near the second wall surface 430.

[0062] The first lead-out member 700 is located on one side of the moving contact 400 in the first direction X. One end of the first lead-out member 700 is connected to the stationary contact 600, and the other end extends out of the housing 100.

[0063] Of course, in other embodiments of this utility model, such as Figure 6 and Figure 7 As shown, one end of the moving contact 400 is provided with a connecting part 460, which is connected to the transmission rod 500, and the other end is provided with a rotating part 450, which is movably disposed in the housing 100. The moving contact 400 is also provided with a moving contact 440, which is located between the connecting part 460 and the rotating part 450 and is adjacent to the connecting part 460.

[0064] In other words, one end of the moving contact 400 is rotatably connected to the housing 100 via the rotating part 450, and the other end is connected to the transmission rod 500 via the connecting part 460. The moving contact 440 is located between the rotating part 450 and the connecting part 460. This increases the lever arm of the moving contact 400, so that when the transmission rod 500 applies the same force to the moving contact 400, it generates a larger torque, which facilitates the moving contact 400 to contact or separate from the stationary contact 600, thereby improving the response speed of the moving contact 400.

[0065] Because the connecting part 460 is located at the end of the moving contact 400, it occupies the connection space between the first lead-out member 700 and the stationary contact 600. Therefore, in this embodiment, the first lead-out member 700 includes a first segment 710, a second segment 720, and a third segment 730 connected in sequence. The stationary contact 600 is connected to the first segment 710. The stationary contact 600 and / or the second segment 720 extend along the first direction X. The stationary contact 600, the second segment 720, and the third segment 730 are arranged along the second direction Y. The first segment 710 and the moving contact 400 are arranged along the third direction Z. One end of the third segment 730 is connected to the second segment 720, and the other end extends out of the housing 100.

[0066] Among them, the first direction X and the second direction Y are both perpendicular to the third direction Z.

[0067] It is worth mentioning that, with the shell 100 as a reference, the third direction Z is the thickness direction of the shell 100.

[0068] Furthermore, such as Figure 1 and Figure 2 As shown, the electromagnetic component 200 includes a coil 210 and a yoke 220 connected to the coil 210. The axis of the coil 210 extends along a first direction X. The coil 210, the armature 300, and the moving contact 400 are arranged sequentially along a second direction Y.

[0069] In this embodiment, with the housing 100 as a reference, the coil 210, armature 300, and moving contact 400 are arranged sequentially along the height direction of the housing 100, and the coil 210 is arranged horizontally inside the housing 100. This allows the coil 210, armature 300, and moving contact 400 to make full and reasonable use of the internal space of the housing 100, and can appropriately reduce the length of the housing 100, thereby reducing the overall volume of the housing 100. This optimizes the spatial layout of the load switch 10, making it particularly suitable for compact electrical equipment and thus improving product adaptability.

[0070] It is worth mentioning that in this embodiment, the yoke 220 is arranged asymmetrically.

[0071] In other embodiments of this utility model, such as Figures 3 to 7 As shown, the coil 210 and the armature 300 are arranged sequentially in the housing 100 along the first direction X, the electromagnetic component 200 and the moving contact 400 are arranged sequentially along the second direction Y, and the axis of the coil 210 extends along the second direction Y.

[0072] In this embodiment, with the housing 100 as a reference, the coil 210 and the armature 300 are arranged sequentially along the length of the housing 100, and the driving mechanism composed of the coil 210 and the armature 300 and the moving contact 400 are arranged sequentially along the height of the housing 100, and the coil 210 is placed inside the housing 100.

[0073] It is worth mentioning that in this embodiment, the yoke 220 is arranged symmetrically.

[0074] Furthermore, in some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the load switch 10 also includes a first elastic element 800. The housing 100 is provided with a limit post 110 and a rotating shaft 120. The moving contact 400 is provided with a moving contact portion 440, a rotating portion 450 and an abutment portion 470 in sequence along its extension direction. The rotating portion 450 is provided with a second oblong hole 451. The rotating shaft 120 is movably engaged with the second oblong hole 451. The limit post 110 is located on the side of the moving contact 400 near the transmission rod 500. The first elastic element 800 is located on the side of the moving contact 400 away from the transmission rod 500. The first elastic element 800 is used to apply an elastic force to the abutment portion 470 when the moving contact 400 and the stationary contact 600 are closed or open. The limit post 110 is used to abut against the moving contact 400 when the moving contact 400 is open.

[0075] In this embodiment, when the moving contact 400 and the stationary contact 600 are closed, the moving contact 400 tends to rotate around the rotating shaft 120 under the elastic restoring force of the first elastic member 800. In this state, the rotating shaft 120 is located at the bottom end of the second oblong hole 451. Therefore, the moving contact portion 440 of the moving contact 400 tends to move toward the stationary contact 600, thereby increasing the contact force between the moving contact 400 and the stationary contact 600 and improving the operational stability of the load switch 10.

[0076] When the moving contact 400 and the stationary contact 600 are open, the moving contact 400 tends to rotate around the limiting shaft under the elastic restoring force of the first elastic element 800. In this state, the rotating shaft 120 is located at the top of the second oblong hole 451. Therefore, if the transmission rod 500 applies a force toward the stationary contact 600 to the moving contact 400 at this time, the moving contact 400 can move toward the stationary contact 600 under the combined force of the transmission rod 500 and the first elastic element 800, thereby achieving the purpose of making it easier for the moving contact 400 to close with the stationary contact 600.

[0077] Furthermore, the load switch also includes an arc-extinguishing chamber 900, which is disposed on one side of the moving contact 400 along the first direction X. The arc-extinguishing chamber 900 can also be disposed on at least one side of the moving contact 400 along the third direction Z. Of course, the arc-extinguishing chamber 900 can also be disposed on both one side of the moving contact 400 along the first direction X and one side of the moving contact 400 along the third direction Z.

[0078] It is understandable that the moving contact 400 can be set on one side of the first direction X in the arc-extinguishing chamber 900, or on one or both sides of the moving contact 400 in the third direction Z. Of course, the arc-extinguishing chamber 900 can also simultaneously set the moving contact 400 on one side of the first direction X and on one or both sides of the third direction Z. It can be adjusted according to actual needs, and no specific limitation is made here.

[0079] It is understood that the arc-extinguishing chamber 900 can also be simultaneously disposed on at least one side of the stationary contact 600 along the first direction X and / or the third direction Z.

[0080] Furthermore, the load switch also includes a second lead-out component 1000, which includes a fourth segment 1010, a fifth segment 1020, and a sixth segment 1030 connected in sequence. The fourth segment 1010 is connected to the moving contact 400 via a flexible connection. The fourth segment 1010 and the fifth segment 1020 are located on the third direction Z side of the moving contact 400, and the sixth segment 1030 is located on the second direction Y side of the moving contact 400. In the closed state, the fourth segment 1010 and the sixth segment 1030 are located on opposite sides of the thickness direction of the moving contact 400, and the current flows in opposite directions in the fourth segment 1010 and the sixth segment 1030.

[0081] Specifically, in the closed state, the current direction of the fourth section 1010 is opposite to that of the moving contact 400, and the current direction of the sixth section 1030 is the same as that of the moving contact 400. This makes the moving contact 400 subject to an electromagnetic force toward the stationary contact 600 in the energized state, thereby increasing the contact force between the moving contact 400 and the stationary contact 600 and improving the short-circuit withstand capability of the load switch.

[0082] Furthermore, in order to further improve the contact force between the moving contact 400 and the stationary contact 600, the load switch also includes a magnetizing element 1100, which is disposed on one or both sides of the moving contact 400 in the thickness direction.

[0083] Specifically, the magnetizing element 1100 is disposed on one or both sides of the moving contact 400 and the sixth segment 1030 along the third direction Z.

[0084] In this embodiment, by disposing of the magnetizing element 1100 on one side or opposite sides of the moving contact 400 and the sixth segment 1030 along the third direction Z, the electromagnetic force on the moving contact 400 toward the stationary contact 600 is increased by the magnetizing element 1100, thereby further increasing the contact force between the moving contact 400 and the stationary contact 600 and further improving the short-circuit withstand capability of the load switch.

[0085] Finally, it is worth mentioning that the above embodiments can be arranged and combined arbitrarily, and are not limited to the specific embodiments shown in the accompanying drawings.

[0086] In summary, this utility model embodiment provides a load switch 10 in which a portion of the projection of the transmission rod 500 on the plane of the moving contact 400's movement path coincides with a portion of the projection of the moving contact 400. That is, the transmission rod 500 is not connected to the top wall of the moving contact 400 facing the armature 300 or the electromagnetic assembly 200, but extends further to connect with other wall surfaces of the transmission rod 500. On the one hand, compared to a conventional connecting rod directly connected to the moving contact 440, the connection position of the transmission rod 500 and the moving contact 400 in this application is further away from the moving contact 440. The stationary contact 440 is separated from the moving contact 400, leaving vertical space corresponding to the moving contact 400, which facilitates arc initiation and improves arc extinguishing capability. On the other hand, the extension length of the transmission rod 500 relative to the moving contact 400 is also longer, so the installation height of the transmission rod 500 relative to the housing 100 can be reduced by moving the transmission rod 500 as a whole downward, thereby reducing the installation space of the transmission rod 500 and the moving contact 400. This optimizes the spatial layout of the load switch 10, making it particularly suitable for compact electrical equipment and thus improving product adaptability.

[0087] Furthermore, this utility model embodiment also provides an electricity meter, including the load switch 10 as described in the above embodiments.

[0088] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A load switch, characterized in that, include: Casing (100); An electromagnetic component (200) is disposed in the housing (100); An armature (300) is movably disposed in the housing (100); A movable contact (400) is movably disposed in the housing (100); A transmission rod (500) is provided, one end of which is connected to the armature (300) and the other end of which is connected to the moving contact (400). The partial projection of the transmission rod (500) on the plane where the moving contact (400) moves coincides with the partial projection of the moving contact (400).

2. The load switch according to claim 1, characterized in that, The load switch further includes a stationary contact (600), and the moving contact (400) includes a first wall surface (410), a side wall (420), and a second wall surface (430). The first wall surface (410) is disposed facing the armature (300), and the second wall surface (430) is disposed opposite to the armature (300). The first wall surface (410) or the second wall surface (430) is provided with a moving contact portion (440) for contacting the stationary contact (600). The transmission rod (500) is connected to the side wall (420) or the second wall surface (430).

3. The load switch according to claim 1, characterized in that, One end of the moving contact (400) is provided with a moving contact portion (440), and the other end is provided with a rotating portion (450). The rotating portion (450) is movably disposed in the housing (100). The moving contact (400) is also provided with a connecting portion (460). The connecting portion (460) is connected to the transmission rod (500). The connecting portion (460) is located between the moving contact portion (440) and the rotating portion (450) and is adjacent to the moving contact portion (440).

4. The load switch according to claim 3, characterized in that, The load switch also includes a stationary contact (600) and a first lead-out member (700) connected to each other. The lead-out member (700) and the moving contact (400) are arranged along a first direction (X), and the stationary contact (600) and the moving contact (400) are arranged along a second direction (Y). The first direction (X) is perpendicular to the second direction (Y).

5. The load switch according to claim 1, characterized in that, One end of the moving contact (400) is provided with a connecting part (460), which is connected to the transmission rod (500), and the other end is provided with a rotating part (450), which is movably disposed in the housing (100). The moving contact (400) is also provided with a moving contact part (440), which is located between the connecting part (460) and the rotating part (450) and is adjacent to the connecting part (460).

6. The load switch according to claim 1, characterized in that, The armature (300) is provided with a transmission arm (310), the transmission arm (310) is provided with a first waist-shaped hole (311), and one end of the transmission rod (500) is movably engaged with the first waist-shaped hole (311).

7. The load switch according to claim 1, characterized in that, The load switch further includes a stationary contact (600) and a first lead-out member (700) connected together. The first lead-out member (700) includes a first segment (710), a second segment (720), and a third segment (730) connected in sequence. The stationary contact (600) is connected to the first segment (710). The stationary contact (600) and / or the second segment (720) extend along a first direction (X). The stationary contact (600), the second segment (720), and the third segment (730) are arranged along a second direction (Y). The first segment (710) and the moving contact (400) are arranged along a third direction (Z). Wherein, the first direction (X) is perpendicular to the second direction (Y), and both the first direction (X) and the second direction (Y) are perpendicular to the third direction (Z).

8. The load switch according to claim 1, characterized in that, The load switch further includes a first elastic element (800), the housing (100) is provided with a rotating shaft (120), the moving contact (400) is provided with a moving contact portion (440), a rotating portion (450) and an abutment portion (470) in sequence along its extension direction, the rotating portion (450) is provided with a second oblong hole (451), and the rotating shaft (120) is movably engaged with the second oblong hole (451); the first elastic element (800) is located on the side of the moving contact (400) away from the transmission rod (500), and the first elastic element (800) is used to apply an elastic force to the abutment portion (470) when the moving contact (400) and the stationary contact (600) are closed.

9. The load switch according to claim 8, characterized in that, The housing (100) is also provided with a limiting post (110), which is located on the side of the moving contact (400) near the transmission rod (500). The limiting post (110) is used to abut against the moving contact (400) when the moving contact (400) is open, so that the first elastic member (800) is also used to apply an elastic force to the abutting part (470) when the moving contact (400) and the stationary contact (600) are open.

10. The load switch according to any one of claims 1-9, characterized in that, The electromagnetic component (200) includes a coil (210) and a yoke (220) connected to the coil (210). The axis of the coil (210) extends along a first direction (X). The coil (210), the armature (300), and the moving contact (400) are arranged sequentially along a second direction (Y), which is perpendicular to the first direction (X).

11. The load switch according to any one of claims 1-9, characterized in that, The electromagnetic component (200) includes a coil (210) and a yoke (220) connected to the coil (210). The coil (210) and the armature (300) are arranged sequentially in the housing (100) along a first direction (X). The electromagnetic component (200) and the moving contact (400) are arranged sequentially along a second direction (Y). The axis of the coil (210) extends along the second direction (Y), which is perpendicular to the first direction (X).

12. The load switch according to claim 1, characterized in that, The load switch further includes an arc-extinguishing chamber (900), which is disposed on at least one side of the moving contact (400) along a first direction (X) and / or a third direction (Z). The first direction (X) is the length direction of the housing (100), and the third direction (Z) is the thickness direction of the housing (100). The first direction (X) and the third direction (Z) are perpendicular to each other.

13. The load switch according to claim 1, characterized in that, The load switch also includes a second lead-out member (1000), which includes a fourth segment (1010), a fifth segment (1020), and a sixth segment (1030) connected in sequence. The fourth segment (1010) is connected to the moving contact (400) via a flexible connection. In the closed state, the fourth segment (1010) and the sixth segment (1030) are located on both sides of the thickness direction of the moving contact (400), and the current flows in opposite directions in the fourth segment (1010) and the sixth segment (1030).

14. The load switch according to claim 1, characterized in that, The load switch also includes a magnetizing element (1100), which is disposed on one or both sides of the moving contact (400) in the thickness direction.

15. An electricity meter, characterized in that, Including the load switch as described in any one of claims 1-14.

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