Load switch and electricity meter

Abstract

The utility model discloses a load switch and an ammeter, and relates to the technical field of low-voltage apparatuses. The load switch comprises a shell, a magnetic circuit assembly, an armature assembly, a transmission part, a suction assisting part and a contact mechanism, the magnetic circuit assembly comprises a coil and a yoke, the coil and the armature assembly are sequentially arranged in the first direction, and the axis direction of the coil is in the second direction perpendicular to the first direction; the suction assisting part and the contact mechanism are arranged on the two opposite sides of the transmission part respectively in the second direction, the contact mechanism comprises a moving contact piece and a static contact piece which are oppositely arranged in the second direction, the relative positions of the first end of the moving contact piece and the static contact piece are fixed, and the second end of the moving contact piece can move relative to the first end; the armature assembly is connected with the moving contact piece through the transmission piece, and the magnetic circuit assembly is used for driving the armature assembly to move and driving the moving contact piece and the static contact piece to be switched on and switched off through the transmission piece. The load switch can solve the problems of large assembly space occupation and poor applicability caused by unreasonable layout of the load switch in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to a load switch and an electric meter. BACKGROUND

[0002] The load switch generally comprises a moving spring, a moving contact, a moving magnetic conductor, a stationary spring, a stationary contact and a stationary magnetic conductor, wherein when the moving contact and the stationary contact are in conduction, magnetic attraction is generated between the moving magnetic conductor and the stationary magnetic conductor and acts on the moving spring, which is conducive to maintaining the closed state of the moving contact and the stationary contact.

[0003] The load switch in the prior art provides a larger contact gap, and generally adopts a layout mode in which the armature assembly, the rotating member and the contact system are arranged in sequence along the same direction. This layout mode results in a larger size in the arrangement direction and a larger occupied assembly space. In the case where other devices in the electric meter or the like are not laid out or structurally adjusted, it is difficult to use this load switch. Therefore, there is an urgent need for a load switch product with a more reasonable layout, a smaller occupied assembly space and better applicability. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a load switch and an electric meter, which can solve the problem of the load switch in the prior art that the unreasonable layout results in a larger occupied assembly space and poor applicability.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, the present application provides a load switch, comprising a housing and a magnetic circuit assembly, an armature assembly, a transmission member, an assistive member and a contact mechanism arranged in the housing, the magnetic circuit assembly comprising a coil and a yoke, the coil and the armature assembly being arranged in sequence along a first direction, an axis direction of the coil being along a second direction perpendicular to the first direction, the assistive member and the contact mechanism being arranged on opposite sides of the transmission member along the second direction, the contact mechanism comprising a moving contact piece and a stationary contact piece arranged oppositely along the second direction, a first end of the moving contact piece being fixed in opposite position with the stationary contact piece, a second end of the moving contact piece being movable relative to the first end, the armature assembly being connected with the moving contact piece through the transmission member, the magnetic circuit assembly being used to drive the armature assembly to move and drive the moving contact piece and the stationary contact piece to open and close through the transmission member. The load switch can solve the problem of the load switch in the prior art that the unreasonable layout results in a larger occupied assembly space and poor applicability.

[0007] As an implementable mode, a sliding groove is arranged on the side of the armature assembly away from the magnetic circuit assembly, a connecting piece is arranged on the movable contact piece, and opposite ends of the transmission member are connected with the sliding groove and the connecting piece respectively. An end of the transmission member away from the movable contact piece is movable in the sliding groove to provide contact overtravel for the movable contact piece.

[0008] As an implementable mode, the connecting piece is a connecting lug with a connecting hole, the connecting lug is arranged on the second end of the movable contact piece and on the side away from the static contact piece, and an end of the transmission member away from the movable contact piece is inserted into the sliding groove, and an end of the transmission member close to the movable contact piece is hinged in the connecting hole.

[0009] As an implementable mode, the armature assembly comprises a rotating part and an extension part connected with each other, the rotating part is arranged on the side close to the magnetic circuit assembly and is rotatably arranged in the shell through a first rotating shaft, the extension part extends towards the side away from the magnetic circuit assembly, and the sliding groove is arranged on the extension part.

[0010] As an implementable mode, an elastic member is further arranged, a mounting shaft is arranged on the extension part, the elastic member is arranged on the mounting shaft, and opposite ends of the elastic member are abutted with the rotating part and an end of the transmission member away from the movable contact piece respectively, and the elastic member can be deformed to provide contact pressure for the movable contact piece.

[0011] As an implementable mode, a first limiting part for abutting with a first end of the elastic member is arranged on the rotating part, and a second limiting part for abutting with a second end of the elastic member when the transmission member is not assembled and for supporting the transmission member after the transmission member is assembled is arranged on the extension part.

[0012] As an implementable mode, the transmission member is a U-shaped transmission rod formed by sequentially connecting a first extension section, a second extension section and a third extension section, and the armature assembly is driven to move relative to the shell to drive the U-shaped transmission rod to move.

[0013] As an implementable mode, the first extension section and the third extension section extend along a third direction perpendicular to the first direction and the second direction.

[0014] As an implementable mode, a movable contact leading-out piece connected with the movable contact piece is further arranged, the movable contact leading-out piece comprises a first section, a second section and a third section connected in sequence, at least part of the movable contact piece is located between the first section and the third section along the second direction when the switch is closed, and the current flowing through the first section and the current flowing through the third section flow in opposite directions.

[0015] As an implementable mode, the second section extends along the second direction, the first section is connected to the first end of the movable contact piece through a flexible member, the third section and the fixed contact piece are located on the same side of the movable contact piece, when closing, the current flow through the movable contact piece is opposite to the current flow through the first section, and is the same as the current flow through the third section.

[0016] As an implementable mode, the first end of the movable contact piece is rotatably arranged in the housing through a second rotating shaft, and the second end is provided with a contact point; the number of the contact points on the movable contact piece and the fixed contact piece is one, and the two contact points are oppositely arranged along the second direction; the second end of the movable contact piece is driven to rotate relative to the first end of the movable contact piece through the transmission member, so as to make the second end of the movable contact piece close to or away from the fixed contact piece.

[0017] As an implementable mode, it further comprises a first magnetic conductor and a second magnetic conductor, and the first magnetic conductor and the second magnetic conductor cooperate to strengthen the contact pressure between the movable contact piece and the fixed contact piece.

[0018] As an implementable mode, the first magnetic conductor and the second magnetic conductor are oppositely arranged along the second direction, the first magnetic conductor is fixedly arranged on the side of the movable contact piece away from the fixed contact piece, and the second magnetic conductor is fixedly arranged on the housing, and the second magnetic conductor is located on the side of the third section away from the movable contact piece.

[0019] As an implementable mode, the first magnetic conductor and the second magnetic conductor are oppositely arranged on the two sides of the movable contact piece along a third direction perpendicular to the first direction and the second direction, and the first magnetic conductor and the second magnetic conductor are fixedly arranged on the housing respectively.

[0020] As an implementable mode, the projection of the first magnetic conductor and the second magnetic conductor along the third direction at least partially covers the movable contact piece and the third section, and / or at least partially covers the movable contact piece and the first section.

[0021] As an implementable mode, the housing comprises a cover and a base arranged along a third direction perpendicular to the first direction and the second direction, the movable contact piece and the first section are arranged along the third direction, and the movable contact piece is located on the side close to the cover.

[0022] As an implementable mode, the suction assisting member stores energy when the product is opened, and the armature assembly abuts, so that when switching from opening to closing, the suction assisting member releases energy to assist the movable contact piece to move towards the fixed contact piece.

[0023] As an implementable mode, an arc extinguishing assembly is further arranged on one side of the contact mechanism along the first direction, and is used for extinguishing an arc generated when the movable contact piece and the static contact piece are opened; the arc extinguishing assembly comprises a U-shaped arc extinguishing chamber and arc extinguishing blades inserted into two side plates of the U-shaped arc extinguishing chamber, and an opening of the U-shaped arc extinguishing chamber faces the contact mechanism, and the arc extinguishing blades are arranged in a tilted manner towards the static contact piece.

[0024] As an implementable mode, a shielding cover is arranged outside the shell, and covers at least part of two sides of the shell along the first direction and two sides of the shell along a third direction perpendicular to the first direction and the second direction.

[0025] As an implementable mode, a shielding plate is further arranged inside the shell, and the coil, the armature assembly and the shielding plate are arranged in sequence along the first direction.

[0026] According to a second aspect of the embodiments of the present application, an electric meter is provided, comprising the load switch described above. The load switch can solve the problem of large assembly space occupation and poor applicability caused by unreasonable layout of the load switch in the prior art.

[0027] The beneficial effects of the embodiments of the present application include:

[0028] The load switch comprises a shell, and a magnetic circuit assembly, an armature assembly, a transmission member, an auxiliary suction member and a contact mechanism arranged in the shell, the magnetic circuit assembly comprises a coil and a yoke, the coil and the armature assembly are arranged in sequence along a first direction, an axis direction of the coil is along a second direction perpendicular to the first direction, the auxiliary suction member and the contact mechanism are arranged on opposite sides of the transmission member along the second direction, the contact mechanism comprises a movable contact piece and a static contact piece arranged oppositely along the second direction, a first end of the movable contact piece is fixed in a position opposite to the static contact piece, a second end of the movable contact piece is movable relative to the first end, the armature assembly is connected to the movable contact piece through the transmission member, the magnetic circuit assembly is used for driving the armature assembly to move, and the transmission member drives the movable contact piece and the static contact piece to open and close. The load switch provided in the present application reasonably arranges the positional relationship among the magnetic circuit assembly, the armature assembly, the transmission member, the auxiliary suction member and the contact mechanism, and is arranged along two mutually perpendicular directions (i.e. the first direction and the second direction), so that the distribution of each component in space is more compact. Compared with the layout mode of sequentially arranging in the same direction in the prior art, the layout mode provided in the present application effectively utilizes the internal space of the shell, avoids space waste, and thus reduces the occupation of the assembly space. Through the compact layout of each component inside the load switch, the load switch provided in the present application can be applied in different application scenarios, especially in the case of limited space, can be more easily installed and used, and thus meets the needs of more users. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 Structure schematic diagram of the load switch provided by the first embodiment of the present application;

[0031] Figure 2 Structure schematic diagram of the load switch provided by the first embodiment of the present application;

[0032] Figure 3 Structure schematic diagram of the load switch provided by the first embodiment of the present application;

[0033] Figure 4 Structure schematic diagram of the load switch provided by the first embodiment of the present application;

[0034] Figure 5 Structure schematic diagram of the load switch provided by the second embodiment of the present application;

[0035] Figure 6 Structure schematic diagram of the load switch provided by the second embodiment of the present application;

[0036] Figure 7 Structure schematic diagram of the load switch provided by the second embodiment of the present application;

[0037] Figure 8 Structure schematic diagram of the load switch provided by the third embodiment of the present application;

[0038] Figure 9 Structure schematic diagram of the load switch provided by the third embodiment of the present application.

[0039] Icon: 100 - load switch; 10 - housing; 11 - cover; 12 - base; 13 - shield cover; 14 - shield plate; 20 - magnetic circuit assembly; 21 - coil; 22 - yoke; 30 - armature assembly; 31 - rotating part; 311 - first rotating shaft; 312 - first limiting part; 32 - extension part; 321 - sliding groove; 322 - mounting shaft; 323 - second limiting part; 40 - transmission member; 41 - first extension section; 42 - second extension section; 43 - third extension section; 50 - suction aid; 60 - contact mechanism; 611 - movable contact piece; 6111 - connecting lug; 6112 - second rotating shaft; 6113 - flexible member; 612 - first magnetic conductor; 613 - mounting plate; 621 - stationary contact piece; 622 - second magnetic conductor; 70 - elastic member; 81 - movable contact lead-out piece; 811 - first section; 812 - second section; 813 - third section; 814 - fourth section; 82 - stationary contact lead-out piece; 90 - arc extinguishing assembly; 91 - U-shaped arc extinguishing chamber; 92 - arc extinguishing grid piece; X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0042] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the connection between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Please refer to Figures 1 to 9 The embodiment of the present application provides a load switch 100, which comprises a shell 10 and a magnetic circuit assembly 20, an armature assembly 30, a transmission member 40, an auxiliary suction member 50 and a contact mechanism 60 arranged in the shell 10, the magnetic circuit assembly 20 comprises a coil 21 and a yoke 22, the coil 21 and the armature assembly 30 are arranged in sequence along a first direction X, the axis direction of the coil 21 is along a second direction Y perpendicular to the first direction X, the auxiliary suction member 50 and the contact mechanism 60 are arranged on opposite sides of the transmission member 40 along the second direction Y, the contact mechanism 60 comprises a movable contact piece 611 and a static contact piece 621 which are oppositely arranged along the second direction Y, the first end of the movable contact piece 611 is fixed in position opposite to the static contact piece 621, the second end of the movable contact piece 611 is movable relative to the first end, the armature assembly 30 is connected with the movable contact piece 611 through the transmission member 40, the magnetic circuit assembly 20 is used for driving the armature assembly 30 to move, and the movable contact piece 611 and the static contact piece 621 are opened and closed through the transmission member 40. The load switch 100 can solve the problem that the load switch 100 in the prior art has a large assembly space and poor applicability due to unreasonable layout.

[0047] It should be noted that, asFigure 1 As shown, the load switch 100 comprises a housing 10 and a magnetic circuit assembly 20, an armature assembly 30, a transmission member 40, an auxiliary suction member 50 and a contact mechanism 60 arranged in the housing 10 respectively, wherein the magnetic circuit assembly 20 comprises a coil 21 and a yoke 22, the coil 21 and the armature assembly 30 are sequentially arranged along a first direction X, and the axis direction of the coil 21 is along a second direction Y, so as to ensure that the magnetic field generated by the coil 21 after being electrified can act on the armature assembly 30 smoothly; the auxiliary suction member 50 and the contact mechanism 60 are arranged on opposite sides of the transmission member 40 along the second direction Y, so that the force of the armature assembly 30 can be transmitted to the contact mechanism 60 through the transmission member 40, and the auxiliary suction member 50 provides additional force to ensure that the armature assembly 30 can be quickly started when switching from product opening to closing, and provides assistance.

[0048] At the same time, the contact mechanism 60 comprises a movable contact piece 611 and a static contact piece 621 which are oppositely arranged along the second direction Y, the first end of the movable contact piece 611 is fixed in position relative to the static contact piece 621, that is, no relative movement occurs between the first end of the movable contact piece 611 and the static contact piece 621, and the second end of the movable contact piece 611 is movable relative to the first end, so that the second end of the movable contact piece 611 can rotate around the first end, thereby realizing the opening and closing of the static contact piece 621. The first direction X and the second direction Y are perpendicular to each other.

[0049] After the coil 21 is electrified, the magnetic field generated by the magnetic circuit assembly 20 acts on the armature assembly 30, so that the magnetic circuit assembly 20 can drive the armature assembly 30 to move, and since the armature assembly 30 is connected to the movable contact piece 611 through the transmission member 40, the armature assembly 30 can drive the movable contact piece 611 to move through the transmission member 40 when the armature assembly 30 moves, thereby realizing the opening (circuit breaking) and closing (circuit closing) operations of the static contact piece 621.

[0050] The auxiliary suction member 50 can be in abutment with the armature assembly 30 to store energy when the product is opened, so that the auxiliary suction member 50 can release energy and act on the armature assembly 30 when switching from opening to closing, to assist the movement of the movable contact piece 611 towards the static contact piece 621, thereby facilitating the quick closing of the movable contact piece 611 and the static contact piece 621. For example, the auxiliary suction member 50 can be a metal spring or other elastic part, as long as the auxiliary suction member 50 can store energy by deforming and has a movement tendency to restore the natural shape.

[0051] The load switch 100 provided by the present application is arranged along two perpendicular directions (i.e. the first direction X and the second direction Y) by reasonably arranging the position relationship of the magnetic circuit assembly 20, the armature assembly 30, the transmission member 40, the suction assisting member 50 and the contact mechanism 60, so that the distribution of each component in space is more compact. Compared with the arrangement mode of sequentially arranging in the same direction in the prior art, the arrangement mode provided by the present application effectively utilizes the internal space of the shell 10, avoids space waste, and thus reduces the occupation of the assembly space.

[0052] Through the compact layout of each component inside the load switch 100, the load switch 100 provided by the present application can be applied in different application scenarios, especially in the case of limited space, it can be more easily installed and used. For example, in some electronic devices or electrical systems with strict requirements on device volume, the load switch 100 provided by the present application can better adapt to the limitation of the internal space, and will not be unable to be installed or affect the normal work of other components due to too large volume. Therefore, the load switch 100 has wider applicability in different environments and devices, and can meet the needs of more users.

[0053] As an implementable mode, as shown in Figures 1 to 4 The armature assembly 30 is provided with a sliding groove 321 on the side away from the magnetic circuit assembly 20, the moving contact piece 611 is provided with a connecting piece, the opposite ends of the transmission member 40 are connected with the sliding groove 321 and the connecting piece respectively, and the end of the transmission member 40 away from the moving contact piece 611 can freely move in the sliding groove 321 to provide contact overtravel for the moving contact piece 611, so as to realize overtravel design. The moving contact piece 611 and the connecting piece can be fixed together after being respectively manufactured, or can be directly manufactured by integral molding. For example, in some embodiments, the connecting piece is a connecting lug 6111 with a connecting hole, the connecting lug 6111 is arranged on the second end of the moving contact piece 611 and located on the side away from the static contact piece 621, the end of the transmission member 40 away from the moving contact piece 611 is inserted into the sliding groove 321, and the end of the transmission member 40 close to the moving contact piece 611 is hinged in the connecting hole.

[0054] It should be noted that, as Figures 1 to 4As shown, a sliding groove 321 is arranged on the side of the armature assembly 30 away from the magnetic circuit assembly 20, and at the same time, a connecting lug 6111 with a connecting hole is arranged on the side of the movable contact piece 611 close to the armature assembly 30, and the opposite ends of the transmission member 40 are connected in the sliding groove 321 and the connecting hole respectively. Through the above connection mode, the rotation of the armature assembly 30 can be transmitted to the movable contact piece 611 through the transmission member 40. When the armature assembly 30 is driven to move by the magnetic circuit assembly 20, the transmission member 40 drives the connecting lug 6111 to move, so that the second end of the movable contact piece 611 rotates around the first end, and then the opening and closing operation with the static contact piece 621 is realized; after the movable contact piece 611 and the static contact piece 621 contact, the magnetic circuit assembly 20 continues to drive the armature assembly 30 to continue to move, and the sliding groove 321 gives the transmission member 40 an avoiding stroke, so that the armature assembly 30 moves to the set position to form an overtravel.

[0055] Through the cooperation of the sliding groove 321, the connecting hole and the transmission member 40, the movement of the armature assembly 30 can be accurately transmitted to the movable contact piece 611. At the same time, the shape of the sliding groove 321 also limits the movement trajectory of the transmission member 40, so that the transmission process is more stable and accurate, and the opening and closing operation of the movable contact piece 611 with the static contact piece 621 can be accurately performed according to the design requirements, and the accuracy and reliability of the action of the load switch 100 are improved.

[0056] As an implementable manner, as shown in Figures 1 to 4 As shown, in this embodiment, the armature assembly 30 includes a rotating part 31 and an extension part 32 connected with each other, the rotating part 31 is located on the side close to the magnetic circuit assembly 20, and the rotating part 31 is rotatably arranged in the housing 10 through a first rotating shaft 311, the extension part 32 extends towards the side away from the magnetic circuit assembly 20, and the sliding groove 321 is located on the extension part 32.

[0057] It should be noted that the armature assembly 30 is formed by the rotating part 31 and the extension part 32 connected with each other. The rotating part 31 is located on the side close to the magnetic circuit assembly 20 and is rotatably arranged in the housing 10 through the first rotating shaft 311, which means that the rotating part 31 can rotate around the first rotating shaft 311, and this action is realized under the action of the magnetic field generated by the magnetic circuit assembly 20. The extension part 32 extends towards the side away from the magnetic circuit assembly 20, and its function is to transmit the movement of the rotating part 31 to other components. The sliding groove 321 is arranged on the extension part 32, and the sliding groove 321 is used to cooperate with the transmission member 40 to convert the rotation of the armature assembly 30 into the driving of other components.

[0058] The rotating part 31 is arranged close to the magnetic circuit assembly 20, so that the magnetic field generated by the magnetic circuit assembly 20 can directly and effectively act on the rotating part 31, thereby driving the rotating part 31 to rotate around the first rotating shaft 311 more efficiently. This layout design can improve the utilization efficiency of magnetic field energy, reduce energy loss, make the armature assembly 30 more sensitive to the magnetic field changes of the magnetic circuit assembly 20, and further improve the overall performance and response speed of the load switch 100.

[0059] The extension part 32 extends away from the magnetic circuit assembly 20, and can realize motion transmission from the vicinity of the magnetic circuit assembly 20 to a farther position in space. By arranging the sliding groove 321 on the extension part 32, the rotating motion of the rotating part 31 can be transmitted to the transmission part 40, thereby driving other components (such as the movable contact piece 611) to act. This structural design can make the layout of various components inside the load switch 100 more flexible, and can realize the coordinated action of different components in a larger space range, which is beneficial to optimizing the spatial layout inside the load switch 100 and improving the space utilization.

[0060] The rotating part 31 is arranged in the housing 10 by rotating around the first rotating shaft 311, which provides stable support and rotating axis for the rotation of the armature assembly 30. The extension part 32 is connected with the rotating part 31 to form an integral structure, so that the armature assembly 30 has good rigidity and stability during motion. At the same time, the sliding groove 321 is arranged on the extension part 32, which can effectively transmit motion without being disturbed too much by the coil 21, further ensuring the stability and reliability of transmission, and helping to improve the stability and accuracy of the load switch 100.

[0061] As an implementation manner, as shown in Figure 2 and Figure 3 , in the embodiment, the load switch 100 further comprises an elastic member 70, the extension part 32 is provided with a mounting shaft 322, the elastic member 70 is arranged on the mounting shaft 322, and the opposite ends of the elastic member 70 respectively abut against the rotating part 31 and the end of the transmission part 40 away from the movable contact piece 611, the elastic member 70 can be deformed to provide contact pressure for the movable contact piece 611. As shown in Figure 2 and Figure 3 , in some embodiments, the elastic member 70 and the transmission part 40 are located on opposite sides of the extension part 32; as shown in Figure 5 and Figure 6 , different from the foregoing embodiments, in some other embodiments, the elastic member 70 and the transmission part 40 are located on the same side of the extension part 32.

[0062] It should be noted that, as shown in Figure 2 and Figure 3 , in some embodiments, the elastic member 70 is arranged on the extension part 32, and the transmission part 40 is arranged on the rotating part 31.As shown, in this embodiment, the load switch 100 is also provided with an elastic member 70, and the extension part 32 of the armature assembly 30 is provided with a mounting shaft 322, and the elastic member 70 is arranged on the mounting shaft 322. The first end of the elastic member 70 abuts against the rotating part 31, and the second end abuts against one end of the transmission member 40 away from the moving contact piece 611. In this way, when the rotating part 31 of the armature assembly 30 rotates under the action of the magnetic circuit assembly 20, the elastic member 70 will be deformed by the mounting shaft 322 of the extension part 32, and the deformation of the elastic member 70 will generate a force acting on the transmission member 40, ultimately providing contact pressure for the moving contact piece 611.

[0063] When the magnetic circuit assembly 20 drives the armature assembly 30 to rotate, the elastic member 70 will be stretched or compressed with the rotation of the rotating part 31, and the elastic force generated thereby will push the transmission member 40, assisting the transmission member 40 in driving the moving contact piece 611 to close or open with the static contact piece 621. The above structural design helps to enhance the action capability of the load switch 100, especially when closing, it can provide contact pressure for the moving contact piece 611, ensuring stable closing of the moving contact piece 611 and the static contact piece 621.

[0064] In addition, the elastic member 70 also has the functions of buffering and damping. During the operation of the load switch 100, especially at the moment of rotation of the armature assembly 30 and opening and closing of the moving contact piece 611 and the static contact piece 621, a certain impact force and vibration will be generated. The elastic member 70 can absorb and buffer these impact forces and vibrations through its deformation, reducing their influence on other internal components of the load switch 100 and reducing the risk of damage to each component due to these impact forces and vibrations, thereby improving the stability and service life of the load switch 100.

[0065] At the same time, the elastic member 70 can also adaptively adjust according to the motion state of the armature assembly 30 and the transmission member 40. Since the opposite ends of the elastic member 70 abut against the rotating part 31 and the transmission member 40 respectively, when the rotation angle of the armature assembly 30 changes or the transmission member 40 is subjected to different resistances, the elastic member 70 will automatically adjust the size and direction of its elastic force to adapt to these changes, ensuring that the transmission member 40 can accurately drive the moving contact piece 611 to open and close, thereby improving the adaptability and stability of the load switch 100 to different working conditions.

[0066] As an implementable manner, as Figure 5 and Figure 6As shown, in the embodiment, the rotating part 31 is provided with a first limiting part 312 for abutting against the first end of the elastic member 70, and the extending part 32 is provided with a second limiting part 323 for abutting against the second end of the elastic member 70 when the transmission member 40 is not assembled, and for supporting the transmission member 40 after the transmission member 40 is assembled. In this way, when the transmission member 40 is not assembled, the second limiting part 323 can abut against the second end of the elastic member 70, so that the stable positioning of the elastic member 70 is realized, and after the transmission member 40 is assembled, the stable installation of the transmission member 40 can be realized through the cooperation of the elastic member 70 and the second limiting part 323.

[0067] As an implementable manner, as shown in Figure 3 As shown, in the embodiment, the transmission member 40 is a U-shaped transmission rod formed by sequentially connecting a first extending section 41, a second extending section 42 and a third extending section 43, so as to be inserted into the sliding groove 321 through the first extending section 41 and be hinged in the connecting hole through the third extending section 43. When the armature assembly 30 is driven to move relative to the housing 10, the U-shaped transmission rod is driven to move, so as to transmit the force of the armature assembly 30 to the movable contact piece 611 through the U-shaped transmission rod. For example, in the embodiment, the first extending section 41 and the third extending section 43 extend along a third direction Z perpendicular to the first direction X and the second direction Y, so that the armature assembly 30, the transmission member 40 and the contact mechanism 60 are more compact in space, and the transmission member 40 is simple in structure and convenient to process and install.

[0068] As an implementable manner, as shown in Figure 4 and Figure 7 As shown, in the embodiment, the load switch 100 further includes a movable contact lead-out piece 81 connected with the movable contact piece 611, and the movable contact lead-out piece 81 includes a first section 811, a second section 812 and a third section 813 connected in sequence. When the switch is closed, at least part of the movable contact piece 611 is located between the first section 811 and the third section 813 along the second direction Y, and the current flowing through the first section 811 and the current flowing through the third section 813 have opposite directions, so that the magnetic fields generated by the two sections of current both generate a force on the movable contact piece 611 towards the stationary contact piece 621, thereby avoiding the repulsive force between the movable contact piece 611 and the stationary contact piece 621 when an abnormal situation such as short circuit occurs, so as to ensure the stable contact between the movable contact piece 611 and the stationary contact piece 621, and improve the operation stability of the contact mechanism 60 and the short-circuit current resistance.

[0069] For example, in the embodiment, the second section 812 extends along the second direction Y, the first section 811 is connected to the first end of the movable contact piece 611 through the flexible piece 6113, the third section 813 and the static contact piece 621 are located on the same side of the movable contact piece 611, when the movable contact piece 611 is closed, the current flowing through the movable contact piece 611 is opposite to the current flowing through the first section 811, and is the same as the current flowing through the third section 813. In addition, it should be noted that the same or opposite current flow directions mentioned in the embodiment refer to that the two current flow directions are approximately parallel, that is, the current flow directions of the two can be parallel, or they have a component along the length extension direction of the movable contact piece 611, and in this case, the current flow directions of the two can be arranged at an angle.

[0070] As an implementable manner, as shown in Figure 4 and Figure 7 The movable contact lead-out piece 81 further includes a fourth section 814, one end of the fourth section 814 is connected to the third section 813, and the other end extends to the outside of the shell 10 along the second direction Y; the load switch 100 further includes a static contact lead-out piece 82, one end of the static contact lead-out piece 82 is connected to the static contact piece 621, and the other end extends to the outside of the shell 10 along the second direction Y, so as to access the power circuit through the movable contact lead-out piece 81 and the static contact lead-out piece 82.

[0071] It should be noted that the fourth section 814 and the static contact lead-out piece 82 can be distributed on the side of the contact mechanism 60 away from the magnetic circuit assembly 20 along the second direction Y. When the movable contact piece 611 and the static contact piece 621 are closed, the static contact lead-out piece 82, the static contact piece 621, the movable contact piece 611, the first section 811, the second section 812, the third section 813 and the fourth section 814 are sequentially connected and accessed to the power circuit, so as to realize the conduction and cut-off control of the current in the power circuit. The movable contact lead-out piece 81 and the static contact lead-out piece 82 provide a clear electrical connection interface between the load switch 100 and the power circuit. Through this connection mode, the load switch 100 can be conveniently and reliably connected to various different circuit systems, so that the load switch 100 can control the current in the power circuit, and meet the needs of different electrical equipment and circuits for on-off control.

[0072] The first section 811 of the movable contact lead-out piece 81 is connected with the movable contact piece 611 by a flexible piece 6113, which has the following advantages: on the one hand, the flexible piece 6113 has a certain flexibility and can well follow the movement of the movable contact piece 611 during the rotation of the movable contact piece 611, without generating excessive stress or pulling due to the rotation of the movable contact piece 611, thereby ensuring the reliability of the connection and avoiding problems such as loosening or breaking of the connection point; on the other hand, the flexible piece 6113 can to some extent buffer the vibration and impact force generated during the movement of the movable contact piece 611, reducing the damage to the movable contact lead-out piece 81 and the entire connection structure, and improving the stability and durability of the load switch 100 during the working process.

[0073] The fourth section 814 of the movable contact lead-out piece 81 and the static contact lead-out piece 82 are arranged on the side of the contact mechanism 60 away from the magnetic circuit assembly 20 and are arranged along the second direction Y, which is conducive to the installation and wiring of the load switch 100 in the electrical equipment. The positions of the lead-out pieces are relatively fixed and clear, which facilitates the designer to reasonably arrange the connection lines between the load switch 100 and other electrical elements according to the actual circuit layout needs, so that the wiring of the entire circuit system is more orderly and standardized, the line crossing and confusion are reduced, the difficulty of circuit installation and maintenance is reduced, and the safety and reliability of the circuit system are improved.

[0074] As an implementable manner, as shown in Figure 4 In this embodiment, the first end of the movable contact piece 611 is rotatably arranged in the housing 10 through the second rotating shaft 6112, and the second end of the movable contact piece 611 is provided with a contact point; the number of contact points on the movable contact piece 611 and the static contact piece 621 is one, and the two contact points are relatively arranged along the second direction Y, and the second end of the movable contact piece 611 is driven to rotate relative to the first end of the movable contact piece 611 through the transmission member 40, so as to make the second end of the movable contact piece 611 approach or away from the static contact piece 621.

[0075] It should be noted that, as shown in Figure 4 The first end of the movable contact piece 611 is rotatably mounted in the housing 10 through the second rotating shaft 6112 to provide a fixed rotating fulcrum for the movable contact piece 611, so that it can rotate around the second rotating shaft 6112. The movable contact piece 611 is rotatably arranged through the second rotating shaft 6112, which can realize the opening and closing of the static contact piece 621 in a more flexible manner. This rotating structure can make the movable contact piece 611 have a high degree of freedom during movement, and can accurately contact or separate from the static contact piece 621, ensuring the reliable on-off of the circuit. Compared with some other forms of connection or movement, the rotating connection can reduce the jamming and friction during movement, improve the efficiency and reliability of the opening and closing.

[0076] For example, as shown inFigure 5 and Figure 6 As shown, in this embodiment, a mounting plate 613 is provided at the second rotating shaft 6112 for mounting the second rotating shaft 6112; the mounting plate 613 is connected to the housing 10 and has a first limiting hole; the housing 10 is provided with a second limiting hole, the second limiting hole and the first limiting hole are arranged opposite to each other along the third direction Z and are coaxial; during assembly, one end of the second rotating shaft 6112 is rotatably inserted into the first limiting hole and the other end is rotatably inserted into the second limiting hole, thereby realizing the installation and positioning of the second rotating shaft 6112 in the housing 10.

[0077] The moving contact 611 has a contact at its second end, and the stationary contact 621 also has a contact. Both the moving contact 611 and the stationary contact 621 have one contact each, and these two contacts (i.e., the contacts on the moving contact 611 and the stationary contact 621) are distributed relative to each other along the second direction Y. When the moving contact 611 is driven by an external force, it rotates about its first end as an axis of rotation, causing its second end to move closer to or further away from the stationary contact 621. This allows the contacts on the moving contact 611 and the stationary contact 621 to make or separate, thereby realizing the circuit's connection (closing) or disconnection (opening) function. The rotation of the moving contact 611 around its first end allows its second end to make relatively smooth contact with the stationary contact 621 when it approaches, and maintains good contact stability in the closed state. In addition, since the movement trajectory of the moving contact piece 611 is relatively fixed during rotation, it can also ensure that the contact position and pressure between the moving contact piece 611 and the stationary contact piece 621 are relatively uniform, reducing the change in contact resistance and reducing problems such as heat generation and arcing caused by poor contact, thereby improving the working stability and service life of the load switch 100.

[0078] This application employs a single-contact design, which significantly simplifies the overall design and manufacturing process of the load switch 100 compared to a multi-contact design. This reduces the number of components, lowering material, processing, and assembly costs during production. Simultaneously, the simplified structure helps improve production efficiency, reduces the probability of failure that might result from an excessive number of components, and enhances the reliability and stability of the load switch 100.

[0079] As one possible implementation method, such as Figure 4 As shown, in this embodiment, the load switch 100 further includes a first magnetic conductor 612 and a second magnetic conductor 622. The first magnetic conductor 612 and the second magnetic conductor 622 cooperate to strengthen the contact pressure between the moving contact piece 611 and the stationary contact piece 621, so as to ensure that the moving contact piece 611 and the stationary contact piece 621 can be stably closed.

[0080] For example, such as Figures 1 to 4As shown, in some embodiments, the first magnetic conductor 612 and the second magnetic conductor 622 are oppositely arranged along the second direction Y, the first magnetic conductor 612 is fixedly arranged on the side of the movable contact piece 611 away from the static contact piece 621, and the second magnetic conductor 622 is fixedly arranged on the shell 10, and the second magnetic conductor 622 is located on the side of the third section 813 away from the movable contact piece 611, specifically, the bottom wall of the second magnetic conductor 622 is located on the side of the third section 813 away from the movable contact piece 611; or, as shown, Figures 5 to 9 As shown, in some embodiments, the first magnetic conductor 612 and the second magnetic conductor 622 are oppositely arranged along the second direction Y, the first magnetic conductor 612 is fixedly arranged on the side of the movable contact piece 611 away from the static contact piece 621, and the second magnetic conductor 622 is fixedly arranged on the shell 10, and the second magnetic conductor 622 is located on the side of the third section 813 away from the movable contact piece 611, specifically, the bottom wall of the second magnetic conductor 622 is located on the side of the third section 813 away from the movable contact piece 611; or, as shown,

[0081] It should be noted that when the load switch 100 is working, the mutual cooperation between the first magnetic conductor 612 and the second magnetic conductor 622 can provide additional contact pressure for the contact between the movable contact piece 611 and the static contact piece 621, so that the contact between them is more closely. Compared with the mode of relying only on the mechanical structure of the transmission member 40 to drive the contact between the movable contact piece 611 and the static contact piece 621, this mode of magnetic attraction can further strengthen the contact pressure between the movable contact piece 611 and the static contact piece 621, thereby reducing the contact resistance, reducing heat and energy loss, and improving the conductivity and working efficiency of the load switch 100.

[0082] In addition, the action of magnetic force can also make the movable contact piece 611 and the static contact piece 621 more stable during contact, and not easy to appear instantaneous separation or poor contact due to external vibration, impact or other interference factors. Even when there is a certain vibration or instability factor in the working environment of the load switch 100, the attraction force between the first magnetic conductor 612 and the second magnetic conductor 622 can ensure that the movable contact piece 611 and the static contact piece 621 maintain good contact state, improve the reliability and stability of the load switch 100, and reduce the possibility of circuit failure and misoperation caused by poor contact.

[0083] As an implementable mode, as shown, Figure 8As shown in the embodiment, the shell 10 comprises a cover 11 and a base 12 arranged along a third direction Z perpendicular to both the first direction X and the second direction Y, the cover 11 and the base 12 are buckled to each other to form a mounting chamber, the movable contact piece 611 and the first section 811 are arranged along the third direction Z, and the movable contact piece 611 is located on the side close to the cover 11, so as to facilitate the installation and maintenance of the movable contact piece 611.

[0084] As an implementable manner, as shown in Figure 1 、 Figure 2 and Figure 4 , in the embodiment, the load switch 100 further comprises an arc extinguishing assembly 90 arranged on one side of the contact mechanism 60 along the first direction X, for extinguishing the arc generated when the movable contact piece 611 and the static contact piece 621 are tripped.

[0085] It should be noted that the arc extinguishing assembly 90 is also arranged in the load switch 100, and the specific position is distributed on one side of the contact mechanism 60 along the first direction X, specifically, on the side of the first end of the static contact piece 621 away from the movable contact piece 611. The main function of the arc extinguishing assembly 90 is to extinguish the arc generated when the movable contact piece 611 and the static contact piece 621 are tripped, so that the load switch 100 can cut off the circuit more quickly and reliably when tripped, and the circuit breaking capacity of the load switch 100 is improved. When the contact mechanism 60 of the load switch 100 is disconnected, high-temperature and high-energy arc will be generated between the movable contact piece 611 and the static contact piece 621 due to the sudden interruption of the current. The arc extinguishing assembly 90 can quickly extinguish the arc, reduce the ablation of the movable contact piece 611 and the static contact piece 621 by the arc, prolong the service life of the movable contact piece 611 and the static contact piece 621, and also avoid the damage of the arc to other components inside the load switch 100, thereby improving the reliability and stability of the load switch 100.

[0086] For example, as shown in Figures 5 to 7 , in some embodiments, the arc extinguishing assembly 90 comprises a U-shaped arc extinguishing chamber 91 and arc grid pieces 92 inserted into the two side plates of the U-shaped arc extinguishing chamber 91, the opening of the U-shaped arc extinguishing chamber 91 faces the contact mechanism 60, and the arc grid pieces 92 are arranged obliquely towards the static contact piece 621, so that the arc generated when the movable contact piece 611 and the static contact piece 621 are tripped can enter the U-shaped arc extinguishing chamber 91 through the opening of the U-shaped arc extinguishing chamber 91 under the guidance of the arc grid pieces 92 for extinguishing treatment, and at the same time, the bottom plate of the U-shaped arc extinguishing chamber 91 away from the opening can also protect the shell 10 from being damaged by the arc.

[0087] For example, as shown in Figure 8As shown, in some embodiments, the housing 10 is externally provided with a shielding cover 13, which at least partially covers two sides of the housing 10 along the first direction X and two sides of the housing 10 along a third direction Z perpendicular to both the first direction X and the second direction Y, so as to avoid interference of an external magnetic field with the magnetic field generated by the magnetic circuit assembly 20 through the shielding cover 13, thereby improving the reliability of the movement of the armature assembly 30.

[0088] For example, as Figure 9 As shown, in some embodiments, the housing 10 is internally further provided with a shielding plate 14, the coil 21, the armature assembly 30 and the shielding plate 14 are arranged in sequence along the first direction X, so as to further improve the anti-interference performance of the armature assembly 30 through the shielding plate 14, thereby ensuring the reliability of the movement of the armature assembly 30. Specifically, the shielding cover 13 and the shielding plate 14 can exist separately or in combination.

[0089] The embodiments of the present application further provide an electric meter comprising the load switch 100 described above. Since the structure and advantages of the load switch 100 have been described in detail in the foregoing embodiments, they will not be described here again.

[0090] The above only describes optional embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0091] In addition, it should be noted that each specific technical feature described in the foregoing specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present application will not describe various possible combinations again.

Claims

1. A load break switch characterized by, The application relates to a magnetic contactor, which comprises a shell (10), a magnetic circuit assembly (20), an armature assembly (30), a transmission member (40), an auxiliary suction member (50) and a contact mechanism (60) arranged in the shell (10), the magnetic circuit assembly (20) comprises a coil (21) and a yoke (22), the coil (21) and the armature assembly (30) are arranged in sequence along a first direction (X), the axis direction of the coil (21) is along a second direction (Y) perpendicular to the first direction (X), the auxiliary suction member (50) and the contact mechanism (60) are arranged on opposite sides of the transmission member (40) along the second direction (Y), the contact mechanism (60) comprises a movable contact piece (611) and a static contact piece (621) arranged oppositely along the second direction (Y), the first end of the movable contact piece (611) is fixed in the opposite position of the static contact piece (621), the second end of the movable contact piece (611) is movable relative to the first end, the armature assembly (30) is connected with the movable contact piece (611) through the transmission member (40), the magnetic circuit assembly (20) is used for driving the armature assembly (30) to move, and the movable contact piece (611) and the static contact piece (621) are separated or closed through the transmission member (40).

2. The load break switch according to claim 1, characterized in that The side, away from the magnetic circuit assembly (20), of the armature assembly (30) is provided with a sliding groove (321), the movable contact piece (611) is provided with a connecting piece, the opposite ends of the transmission member (40) are connected with the sliding groove (321) and the connecting piece respectively, and the end, away from the movable contact piece (611), of the transmission member (40) is movable in the sliding groove (321), so that the movable contact piece (611) is provided with contact overtravel.

3. The load break switch according to claim 2, characterized in that The connecting piece is a connecting lug (6111) with a connecting hole, the connecting lug (6111) is arranged at the second end of the movable contact piece (611) and located on the side, away from the static contact piece (621), the end, away from the movable contact piece (611), of the transmission member (40) is inserted in the sliding groove (321), and the end, close to the movable contact piece (611), of the transmission member (40) is hinged in the connecting hole.

4. The load break switch of claim 2, wherein, The armature assembly (30) comprises a rotating part (31) and an extension part (32) connected with each other, the rotating part (31) is located on the side close to the magnetic circuit assembly (20), the rotating part (31) is rotatably arranged in the shell (10) through a first rotating shaft (311), the extension part (32) extends towards the side, away from the magnetic circuit assembly (20), and the sliding groove (321) is located on the extension part (32).

5. The load break switch according to claim 4, characterized in that Further comprising an elastic member (70), the extension part (32) is provided with a mounting shaft (322), the elastic member (70) is arranged on the mounting shaft (322), and the opposite ends of the elastic member (70) are respectively in abutment with the rotating part (31) and the end of the transmission member (40) away from the movable contact piece (611), and the elastic member (70) can be deformed to provide contact pressure for the movable contact piece (611).

6. The load break switch according to claim 5, characterized in that The rotating part (31) is provided with a first limiting part (312) for abutting with the first end of the elastic member (70), and the extension part (32) is provided with a second limiting part (323) for abutting with the second end of the elastic member (70) when the transmission member (40) is not assembled, and supporting the transmission member (40) after the transmission member (40) is assembled.

7. The load break switch of claim 1, wherein, The transmission member (40) is a U-shaped transmission rod formed by sequentially connecting a first extension section (41), a second extension section (42) and a third extension section (43), and the armature assembly (30) is driven to move relative to the housing (10) to drive the U-shaped transmission rod to move.

8. The load break switch according to claim 7, characterized in that The first extension section (41) and the third extension section (43) extend along a third direction (Z) perpendicular to the first direction (X) and the second direction (Y).

9. The load break switch of claim 1, wherein, Further comprising a movable contact lead-out piece (81) connected with the movable contact piece (611), the movable contact lead-out piece (81) comprises a first section (811), a second section (812) and a third section (813) connected in sequence, and at least part of the movable contact piece (611) is located between the first section (811) and the third section (813) along the second direction (Y) during closing, and the current flowing through the first section (811) and the current flowing through the third section (813) are opposite.

10. The load switch of claim 9, wherein, The second section (812) extends along the second direction (Y), the first section (811) is connected with the first end of the movable contact piece (611) through a flexible member (6113), and the third section (813) and the stationary contact piece (621) are located on the same side of the movable contact piece (611), and the current flowing through the movable contact piece (611) and the current flowing through the third section (813) are opposite, and the current flowing through the first section (811) and the current flowing through the third section (813) are the same.

11. The load break switch of claim 9, wherein, The first end of the movable contact piece (611) is rotatably arranged in the housing (10) through a second rotating shaft (6112), and the second end is provided with a contact point; the number of contact points on the movable contact piece (611) and the stationary contact piece (621) is one, and the two contact points are oppositely arranged along the second direction (Y), and the second end of the movable contact piece (611) is driven to rotate relative to the first end of the movable contact piece (611) through the transmission member (40), so that the second end of the movable contact piece (611) is close to or away from the stationary contact piece (621).

12. The load switch of claim 9, wherein, Further comprising a first magnetic conductor (612) and a second magnetic conductor (622), which cooperate to strengthen the contact pressure between the moving contact piece (611) and the static contact piece (621).

13. The load break switch of claim 12, wherein, The first magnetic conductor (612) and the second magnetic conductor (622) are oppositely arranged along the second direction (Y), the first magnetic conductor (612) is fixedly arranged on the side of the moving contact piece (611) away from the static contact piece (621), and the second magnetic conductor (622) is fixedly arranged on the shell (10), and the second magnetic conductor (622) is located on the side of the third section (813) away from the moving contact piece (611).

14. The load break switch of claim 12, wherein, The first magnetic conductor (612) and the second magnetic conductor (622) are oppositely arranged on both sides of the moving contact piece (611) along the third direction (Z) perpendicular to the first direction (X) and the second direction (Y), and the first magnetic conductor (612) and the second magnetic conductor (622) are fixedly arranged on the shell (10) respectively.

15. The load break switch according to claim 14, characterized in that The projection of the first magnetic conductor (612) and the second magnetic conductor (622) along the third direction (Z) at least partially covers the projection of the moving contact piece (611) and the third section (813) along the third direction (Z), and / or at least partially covers the projection of the moving contact piece (611) and the first section (811) along the third direction (Z).

16. The load switch of claim 9, wherein, The shell (10) comprises a cover (11) and a base (12) arranged along a third direction (Z) perpendicular to the first direction (X) and the second direction (Y), the moving contact piece (611) and the first section (811) are arranged along the third direction (Z), and the moving contact piece (611) is located on the side close to the cover (11).

17. The load break switch of claim 1, wherein, The auxiliary suction member (50) stores energy when the product is opened, and abuts against the armature assembly (30) to make the auxiliary suction member (50) release energy to help the moving contact piece (611) move towards the static contact piece (621) when switching from opening to closing.

18. The load switch of claim 1, wherein, Further comprising an arc extinguishing assembly (90) arranged on one side of the contact mechanism (60) along the first direction (X), used for extinguishing the arc generated when the moving contact piece (611) and the static contact piece (621) are opened; the arc extinguishing assembly (90) comprises a U-shaped arc extinguishing chamber (91) and arc extinguishing fins (92) inserted into the two side plates of the U-shaped arc extinguishing chamber (91), the opening of the U-shaped arc extinguishing chamber (91) faces the contact mechanism (60), and the arc extinguishing fins (92) are arranged obliquely towards the static contact piece (621).

19. The load break switch of claim 1, wherein, The shell (10) is provided with a shielding cover (13) which at least partially covers the two sides of the shell (10) along the first direction (X) and the two sides of the shell (10) along the third direction (Z) perpendicular to the first direction (X) and the second direction (Y).

20. The load switch of claim 1, wherein, The shell (10) is internally provided with a shielding plate (14), the coil (21), the armature assembly (30) and the shielding plate (14) are sequentially arranged along the first direction (X).

21. An electricity meter, characterised in that, The load switch (100) according to any one of claims 1-19.

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