Load switch and electric energy meter

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a load switch and an electric energy meter, which comprise an electromagnetic driving module, a moving contact and a static contact, a movable iron core shaft is arranged on the electromagnetic driving module in a penetrating manner, the movable contact is mounted at the end part of the movable iron core shaft, and the electromagnetic driving module drives the movable contact to be close to or far away from the static contact along a straight line through the movable iron core shaft, so that the movable contact and the static contact are switched on and switched off; and the extension direction of the central axis of the movable iron core shaft is consistent with the linear motion direction of the movable contact. According to the application, the moving contact and the static contact are driven to be switched on and switched off in a direct pushing mode, a large moving opening distance can be obtained, and the contact pressure of switching on of the load switch can be conveniently controlled.

Description

Technical Field

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

[0002] The prior art usually sets a load switch such as a relay in the electric energy meter to control the on and off of the circuit. Most of the prior art is non-direct drive. For example, a rotating component is usually used to drive the moving contact to rotate and realize the opening and closing of the moving contact and the static contact, wherein the moving contact generates an arc motion path through rotation, and the actual moving distance generated by the arc motion path is limited by the rotation radius of the rotating component. In addition, when the prior art drives the moving contact and the static contact to close the contact through the rotating component, the contact pressure is small, which is easy to generate contact resistance, affecting the conductive performance of the circuit. Utility Model Content

[0003] The purpose of the present application is to provide a load switch and an electric energy meter, which drive the moving contact and the static contact to open and close by direct push, which can not only obtain a larger dynamic opening distance, but also facilitate the control of the closing of the contact assembly to obtain a larger contact pressure.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides a load switch, comprising an electromagnetic drive module and a contact assembly; the contact assembly comprises a moving contact and a stationary contact; a moving iron core shaft is passed through the electromagnetic drive module, and the moving contact is installed at the end of the moving iron core shaft; the electromagnetic drive module drives the moving contact to approach or move away from the stationary contact in a straight line through the moving iron core shaft, so that the moving contact and the stationary contact are opened and closed; the extension direction of the central axis of the moving iron core shaft is consistent with the linear movement direction of the moving contact.

[0006] As an optional implementation, both the stationary contact and the moving contact are provided with connecting busbars; the connecting busbars are located on one side or both sides of the linear motion direction of the moving contact.

[0007] As an optional implementation, the extension direction of the connecting busbar is parallel to or intersects with the linear motion direction of the moving contact.

[0008] As an optional embodiment, it also includes a shell structure and an arc extinguishing assembly; the arc extinguishing assembly and the contact assembly are both arranged in the shell structure; the arc extinguishing assembly is arranged on one side or both sides of the linear motion direction of the moving contact.

[0009] As an optional implementation, the shell structure is a rectangular shell structure; the length direction of the rectangular shell structure is parallel to the linear motion direction of the moving contact, and the arc extinguishing assembly and the electromagnetic driving module are respectively arranged on both sides of the length direction.

[0010] As an optional embodiment, the shell structure is a rectangular shell structure, the linear motion direction of the moving contact is consistent with the diagonal extension direction of the rectangular shell structure; the moving contact and the static contact are both located on both sides of the linear motion direction of the moving contact.

[0011] As an optional embodiment, a plurality of installation chambers arranged side by side are provided in the shell structure; the arrangement direction of the plurality of installation chambers is perpendicular or parallel to the arrangement plane of the contact assemblies and the arc extinguishing assemblies in the installation chambers; an insulating structural member is provided between adjacent installation chambers, and adjacent contact assemblies are electrically connected through the provided connecting conductors.

[0012] As an optional implementation, the arc extinguishing assembly includes a plurality of arc extinguishing grids arranged at intervals; the plane where the arc extinguishing grids are located is parallel to or intersects with the linear motion direction of the moving contact.

[0013] As an optional embodiment, the shell structure is provided with a first installation chamber for accommodating the arc extinguishing assembly and a second installation chamber for accommodating the contact assembly; the first installation chamber and the second installation chamber are connected to each other; the gap formed by the moving contact and the static contact is opened toward the arc extinguishing assembly in the first installation chamber.

[0014] As an optional implementation, there are two connecting busbars located on both sides of the linear motion direction of the moving contact, and the extending direction of the connecting busbars is perpendicular to the linear motion direction.

[0015] As an optional embodiment, there are two connecting busbars located on the same side of the linear motion direction of the moving contact, one connecting busbar extends in a direction perpendicular to the linear motion direction, and the other connecting busbar extends in a direction parallel to the linear motion direction.

[0016] In a second aspect, an embodiment of the present application provides an electric energy meter, comprising a mutual inductor and the above-mentioned load switch, wherein the mutual inductor is electrically connected to a connecting busbar of the load switch.

[0017] The beneficial effects of the embodiments of the present application include:

[0018] The embodiment of the present application provides a load switch, including an electromagnetic drive module, a moving contact and a static contact; the electromagnetic drive module of the embodiment of the present application is provided with a moving iron core shaft, and the moving contact is installed at the end of the moving iron core shaft, and the electromagnetic drive module drives the moving contact to approach or move away from the static contact in a straight line through the moving iron core shaft, so that the moving contact and the static contact are opened and closed; the extension direction of the central axis of the moving iron core shaft is consistent with the linear motion direction of the moving contact. Compared with the prior art, the embodiment of the present application sets the moving contact on the moving iron core shaft, so that the moving iron core shaft can drive the moving contact to move linearly along the direction of the insertion, and realizes the opening and closing of the static contact through the linear motion. The embodiment of the present application is conducive to obtaining a larger dynamic opening distance between the moving contact and the static contact through the linear drive of the moving contact. In addition, the embodiment of the present application can make the contact pressure between the moving contact and the static contact easy to control by controlling the linear motion of the moving contact, which can avoid the generation of contact resistance and the shortening of the service life of the load switch.

[0019] The electric energy meter provided in the embodiment of the present application adopts the above-mentioned load switch, which drives the moving contact and the static contact to open and close by direct push, which can not only obtain a larger dynamic opening distance, but also facilitate the control of the contact assembly closing to obtain a larger contact pressure. Therefore, the embodiment of the present application can make the electric energy meter operate reliably and facilitate the improvement of the safety and reliability of the electric energy meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is one of the structural schematic diagrams of the load switch in the embodiment of the present application;

[0022] Figure 2 This is the second structural diagram of the load switch in the embodiment of the present application;

[0023] Figure 3 This is the third structural diagram of the load switch of the embodiment of the present application;

[0024] Figure 4 This is the fourth structural diagram of the load switch of the embodiment of the present application;

[0025] Figure 5 This is the fifth structural diagram of the load switch of the embodiment of the present application;

[0026] Figure 6 This is the sixth structural diagram of the load switch of the embodiment of the present application;

[0027] Figure 7 This is the seventh structural diagram of the load switch of the embodiment of the present application;

[0028] Figure 8 This is the eighth structural diagram of the load switch of the embodiment of the present application;

[0029] Fig. 9 This is a schematic diagram of the structure of the electric energy meter according to the embodiment of the present application.

[0030] Icons: 100-electromagnetic drive module; 101-moving contact; 102-static contact; 103-moving iron core shaft; 104-connecting piece; 105-contact assembly; 106-arc extinguishing assembly; 107-rectangular shell structure; 108-diagonal line; 109-arc extinguishing grid; 110-gap opening; 111-connecting busbar; 112-linear motion direction; 10-load switch; 11-transformer. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] The load switch 10 of the prior art usually uses a rotating assembly to drive the moving contact 101 to rotate, and realizes the opening and closing of the moving contact 101 and the static contact 102, wherein the moving contact 101 generates an arc motion path by rotating, and the actual moving distance generated by the arc motion path is limited by the rotation radius of the rotating assembly. In addition, when the prior art drives the moving contact 101 and the static contact 102 to close the contact by the rotating assembly, the contact pressure is difficult to control. If the contact pressure is small, contact resistance is likely to be generated, affecting the conductive performance of the circuit; if the contact pressure is large, the rotating contact is likely to cause increased contact wear and shorten the service life of the contact assembly 105.

[0036] In order to solve the above technical problems, an embodiment of the present application provides a load switch 10 and an electric energy meter.

[0037] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a load switch 10, including an electromagnetic drive module 100 and a contact assembly 105, the contact assembly 105 including a moving contact 101 and a stationary contact 102; a moving iron core shaft 103 is passed through the electromagnetic drive module 100, and the moving contact 101 is installed at the end of the moving iron core shaft 103. The electromagnetic drive module 100 drives the moving contact 101 to approach or move away from the stationary contact 102 in a straight line through the moving iron core shaft 103, so that the moving contact 101 and the stationary contact 102 are opened and closed; the extension direction of the central axis of the moving iron core shaft 103 is consistent with the linear movement direction 112 of the moving contact 101.

[0038] The load switch 10 provided in the embodiment of the present application includes an electromagnetic drive module 100, which can be a bistable holding electromagnet. The specific structures of the moving contact 101 and the stationary contact 102 can be set by those skilled in the art as needed, and are not particularly limited thereto.

[0039] It should be noted that the direction of the moving iron core shaft 103 in the embodiment of the present application is the direction of the central axis of the moving iron core shaft 103. The end of the moving iron core shaft 103 is connected to the moving contact 101, and the linear motion of the moving iron core shaft 103 along its central axis can be converted into the linear motion of the moving contact 101, thereby achieving the closing and opening of the contact with the static contact 102.

[0040] It should be noted that, in the embodiment of the present application, by adjusting the magnitude of the electromagnetic driving force of the electromagnetic driving module 100 on the moving iron core shaft 103 , the magnitude of the contact pressure generated by the abutting contact between the moving contact 101 and the stationary contact 102 can be achieved.

[0041] It should be noted that compared with conventional complex connecting rod or gear transmission connections, the direct push type has a higher transmission efficiency. It can not only obtain a larger dynamic opening distance, but also facilitate the control of the closing of the contact assembly 105 to obtain a larger contact pressure. At the same time, the direct push type has a simple and reliable structure, occupies a small space, is more conducive to product layout, and reduces the size of the product.

[0042] Therefore, the embodiment of the present application facilitates the adjustment of the driving force of the moving contact 101 approaching the stationary contact 102 along a straight line.

[0043] It should be noted that the bistable holding electromagnet has two states, namely, a power-on state and a power-off state. In the power-on state, the moving iron core shaft 103 passing through the electromagnet is attracted to the magnetic pole of the electromagnet and remains in this position until an external force causes it to detach. In the power-off state, the moving iron core shaft 103 of the electromagnet will not be attracted to the magnetic pole of the electromagnet, that is, no attraction is generated.

[0044] It should be noted that the bistable holding electromagnet used in the embodiment of the present application only consumes energy when switching states, but does not consume energy when holding states, so it has lower energy loss than traditional electromagnets. Since the bistable holding electromagnet has two stable states, it has higher stability and is not prone to accidental switching.

[0045] In addition, it should be noted that the bistable holding electromagnet is not easy to burn out, has a long service life, and is highly reliable. It can output a large current and is suitable for applications with high power output.

[0046] The embodiment of the present application provides a load switch 10, including an electromagnetic drive module 100, a moving contact 101 and a stationary contact 102; the electromagnetic drive module 100 of the embodiment of the present application is provided with a moving iron core shaft 103, and the moving contact 101 is installed at the end of the moving iron core shaft 103. The electromagnetic drive module 100 drives the moving contact 101 to approach or move away from the stationary contact 102 in a straight line through the moving iron core shaft 103, so that the moving contact 101 and the stationary contact 102 are opened and closed; the extension direction of the central axis of the moving iron core shaft 103 is consistent with the linear movement direction 112 of the moving contact 101.

[0047] Compared with the prior art, the embodiment of the present application sets a moving contact 101 on the moving iron core shaft 103, so that the moving iron core shaft 103 can drive the moving contact 101 to move linearly along the penetration direction, and realize opening and closing with the static contact 102 through linear motion.

[0048] The embodiment of the present application facilitates obtaining a larger dynamic opening distance between the moving contact 101 and the stationary contact 102 by linearly driving the moving contact 101. In addition, the embodiment of the present application facilitates controlling the contact pressure between the moving contact 101 and the stationary contact 102 by controlling the linear motion of the moving contact 101, thereby avoiding the generation of contact resistance and the shortening of the service life of the load switch 10.

[0049] Reference Figure 1 and Figure 2 As shown, as an optional implementation, a connecting piece 104 is provided at the end of the moving iron core shaft 103 , and the moving contact 101 is connected to the moving iron core shaft 103 via the connecting piece 104 .

[0050] It should be noted that the connector 104 may be a snap-fit ​​assembly or other structures, and those skilled in the art may configure it as required.

[0051] Exemplarily, the connecting member 104 includes a connecting structure installed at the end of the moving iron core shaft 103, and the moving contact 101 is connected to the connecting structure through a spring element; the spring element can press the moving contact 101 against the connecting structure, and the spring element can also provide pressure so that the moving contact 101 and the static contact 102 are elastically supported.

[0052] As an optional embodiment, both the stationary contact 102 and the moving contact 101 are provided with a connecting bus 111; the connecting bus 111 is located on one side or both sides of the linear motion direction 112 of the moving contact 101. The extending direction of the connecting bus 111 is parallel to or intersects with the linear motion direction 112 of the moving contact 101.

[0053] Reference Figure 2 As shown, illustratively, the connecting busbar 111 is located on one side of the linear motion direction 112 of the moving contact 101 , and the extension directions of the two connecting busbars 111 are parallel to each other and perpendicular to the linear motion direction 112 .

[0054] For example, refer to Figure 4 As shown, there are two connecting busbars 111 located on both sides of the linear motion direction 112 of the moving contact 101 , and the extending direction of the connecting busbars 111 is perpendicular to the linear motion direction 112 .

[0055] For example, refer to Figure 5 As shown, there are two connecting busbars 111 and they are located on the same side of the linear motion direction 112 of the moving contact 101 . The extension direction of one connecting busbar 111 is perpendicular to the linear motion direction 112 , and the extension direction of the other connecting busbar 111 is parallel to the linear motion direction 112 .

[0056] For example, refer to Figure 6As shown, there are two connecting busbars 111 and they are located on the same side of the linear motion direction 112 of the moving contact 101 , and the extension directions of the two connecting busbars 111 are both parallel to the linear motion direction 112 .

[0057] For example, refer to Figure 7 As shown, there are two connecting busbars 111 located on both sides of the linear motion direction 112 of the moving contact 101 , and the extending direction of the connecting busbars 111 and the linear motion direction 112 are preset at an angle of 45°.

[0058] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the load switch 10 provided in the embodiment of the present application includes a housing structure, the above-mentioned contact assembly 105 and an arc extinguishing assembly 106; the arc extinguishing assembly 106 and the contact assembly 105 are both arranged in the housing structure.

[0059] It should be noted that the load switch 10 provided in the embodiment of the present application includes a housing structure, a contact assembly 105 and an arc extinguishing assembly 106. The contact assembly 105 in the embodiment of the present application drives the moving contact 101 and the static contact 102 to open and close by direct push, which can not only obtain a larger moving opening distance, but also facilitate the control of the contact pressure of the contact assembly 105 when closing.

[0060] Compared with the prior art, the load switch 10 provided in the embodiment of the present application does not use a rotating assembly to drive the moving contact 101 to move, and changes the movement form of the moving contact 101 from arc rotation to linear motion through a linear push-pull method. It should be noted that the linear motion of the moving contact 101 is conducive to improving the sensitivity of the moving contact 101 and the static contact 102 when opening and closing.

[0061] In addition, compared with arc rotation, the linear motion of the moving contact 101 makes the space utilization rate of the structural layout higher, which can avoid the moving contact 101 occupying a large motion space.

[0062] Therefore, the embodiment of the present application can make the layout of the entire structure more compact to a certain extent through the linear movement of the moving contact 101.

[0063] It should be noted that the contact assembly 105 and the arc extinguishing assembly 106 in the embodiment of the present application are both arranged in a housing structure, and the specific shape of the housing structure can be selected by technicians in the field according to needs, and there is no special limitation on this.

[0064] Exemplarily, the shell structure is a rectangular shell or a circular shell.

[0065] The load switch 10 of the embodiment of the present application drives the moving contact 101 and the static contact 102 to open and close by direct pushing, which can not only obtain a larger moving opening distance, but also facilitate the control of the contact pressure of the contact assembly 105 when closing.

[0066] Reference Figure 1 and Figure 2 As shown, as an optional implementation, the arc extinguishing assembly 106 is arranged on one side of the linear motion direction 112 of the moving contact 101 .

[0067] It should be noted that the arc extinguishing assembly 106 is arranged on one side of the linear motion direction 112 of the moving contact 101 in the embodiment of the present application, so that the compactness of the layout in the housing structure is improved. The housing structure is a rectangular housing structure 107, which can be divided into two installation spaces in the left and right directions in the length direction. The arc extinguishing assembly 106 can be arranged in the right half of the rectangular housing structure 107, and the moving contact 101, the static contact 102 and the electromagnetic drive module 100 can be arranged in the left half.

[0068] It should be noted that those skilled in the art may also divide the rectangular housing structure 107 into left and right parts in the width direction or other directions, so as to arrange the arc extinguishing assembly 106 on one side of the linear motion direction 112 of the moving contact 101 .

[0069] Exemplarily, the housing structure is a rectangular housing structure 107 ; the length direction of the rectangular housing structure 107 is parallel to the linear motion direction 112 of the moving contact 101 , and the arc extinguishing assembly 106 and the electromagnetic driving module 100 are respectively arranged on both sides of the length direction.

[0070] Reference Figure 3 As shown, as an optional implementation, the arc extinguishing assembly 106 is arranged on both sides of the linear motion direction 112 of the moving contact 101 .

[0071] Different from the above-mentioned embodiments, the arc extinguishing assembly 106 of the embodiment of the present application is arranged on both sides of the linear motion direction 112 of the moving contact 101, that is, double-sided arc extinguishing is performed. Compared with the above-mentioned embodiments, the embodiment of the present application has a stronger arc extinguishing performance.

[0072] Reference Figure 3 As shown, exemplarily, the shell structure is a rectangular shell structure 107, the linear movement direction 112 of the moving contact 101 is consistent with the extension direction of the diagonal 108 of the rectangular shell structure 107; the arc extinguishing assembly 106, the moving contact 101 and the static contact 102 are all symmetrical about the center of the linear movement direction 112 of the moving contact 101.

[0073] For example, there may be a plurality of stacked housing structures, and the stacking direction of the housing structures is perpendicular to the arrangement plane of the contact assembly 105 and the arc extinguishing assembly 106. The plane where the insulating structure is located is parallel to the arrangement plane.

[0074] For example, refer to Figure 8As shown, two rectangular shell structures 107 are stacked.

[0075] It should be noted that multiple installation chambers can also be arranged in a housing structure, and the multiple installation chambers can be stacked and arranged in a direction perpendicular to the layout plane. The installation chambers can also be arranged side by side and in a direction parallel to the layout plane as needed.

[0076] An insulating structure is provided between adjacent installation chambers, and the insulating structure is used to isolate the arc between the arc extinguishing assembly 106 and the contact assembly 105 to improve safety.

[0077] In addition, adjacent contact assemblies 105 are electrically connected via a connection conductor, wherein the connection conductor may be a soft connection conductor or a rigid connection conductor, and those skilled in the art may select the connection conductor according to their needs.

[0078] It should be noted that the embodiment of the present application achieves a symmetrical arrangement of the arc extinguishing assembly 106 about the linear motion direction 112 of the moving contact 101 while appropriately increasing the space occupied by the shell structure, which not only makes the layout within the shell structure more compact, but also greatly improves the arc extinguishing performance of the entire device.

[0079] It should be noted that the linear motion direction 112 of the embodiment of the present application may also be parallel to the length direction of the rectangular shell structure 107. In this regard, those skilled in the art may make a selection according to their needs.

[0080] The arc extinguishing assembly 106 includes a plurality of arc extinguishing grids 109 arranged at intervals; the plane where the arc extinguishing grids 109 are located is parallel to or intersects with the linear motion direction 112 of the moving contact 101 .

[0081] It should be noted that the arrangement direction of the arc-extinguishing grids 109 may be perpendicular to the linear motion direction 112 .

[0082] As an optional implementation, a first installation chamber for accommodating the arc extinguishing assembly 106 and a second installation chamber for accommodating the contact assembly 105 are provided in the housing structure; the first installation chamber and the second installation chamber are connected to each other.

[0083] Reference Figure 3 As shown, the gap opening 110 formed by the opening of the moving contact 101 and the stationary contact 102 of the contact assembly 105 faces the arc extinguishing assembly 106 of the first installation chamber.

[0084] It should be noted that the gap opening 110 formed by the moving contact 101 and the static contact 102 is oriented toward the arc extinguishing assembly 106, so that the arc generated by the moving contact 101 and the static contact 102 can effectively enter the arc extinguishing assembly 106, which is convenient for the arc extinguishing assembly 106 to quickly extinguish the arc. Therefore, the embodiment of the present application can effectively improve the safety and reliability of the entire device through the above-mentioned settings. Among them, the gap opening 110 formed by the moving contact 101 and the static contact 102 forming an arc running channel, the arc running channel connects the arc extinguishing assembly 106 of the first installation chamber, so that the arc can accurately enter the arc extinguishing assembly 106, because the arc extinguishing assembly 106 includes a plurality of arc extinguishing grids 109 arranged at intervals; the plane where the arc extinguishing grids 109 are located is parallel to or intersects with the linear motion direction 112 of the moving contact 101, so that the spacing between adjacent arc extinguishing grids 109 directly divides the arc into multiple sections, improves the arc extinguishing speed, and realizes efficient arc extinguishing of the arc extinguishing assembly 106.

[0085] Reference Fig. 9 As shown, an embodiment of the present application further provides an electric energy meter, including a mutual inductor 11 and the above-mentioned load switch 10 , and the mutual inductor 11 is electrically connected to a connecting bus 111 of the load switch 10 .

[0086] The electric energy meter provided in the embodiment of the present application adopts the above-mentioned load switch 10, which drives the moving contact 101 and the static contact 102 to open and close by direct push, which can not only obtain a larger moving opening distance, but also facilitate the control of the contact assembly 105 to close and obtain a larger contact pressure. Therefore, the embodiment of the present application can make the electric energy meter operate reliably and facilitate the improvement of the safety and reliability of the electric energy meter.

[0087] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A load switch, characterized in that: It includes an electromagnetic drive module and a contact assembly; the contact assembly includes a moving contact and a static contact; a moving iron core shaft is passed through the electromagnetic drive module, and the moving contact is installed at the end of the moving iron core shaft. The electromagnetic drive module drives the moving contact to approach or move away from the static contact in a straight line through the moving iron core shaft, so that the moving contact and the static contact are opened and closed; the extension direction of the central axis of the moving iron core shaft is consistent with the linear movement direction of the moving contact.

2. The load switch according to claim 1, characterized in that: The static contact and the moving contact are both provided with a connecting busbar; the connecting busbar is located on one side or both sides of the linear motion direction of the moving contact.

3. The load switch according to claim 2, characterized in that: The extending direction of the connecting busbar is parallel to or intersects with the linear motion direction of the moving contact.

4. The load switch according to claim 1, characterized in that: It also includes a shell structure and an arc extinguishing assembly; the arc extinguishing assembly and the contact assembly are both arranged in the shell structure; the arc extinguishing assembly is arranged on one side or both sides of the linear motion direction of the moving contact.

5. The load switch according to claim 4, characterized in that: The housing structure is a rectangular housing structure; the length direction of the rectangular housing structure is parallel to the linear motion direction of the moving contact, and the arc extinguishing assembly and the electromagnetic driving module are respectively arranged on both sides of the length direction.

6. The load switch according to claim 4, characterized in that: The housing structure is a rectangular housing structure, and the linear motion direction of the moving contact is consistent with the diagonal extension direction of the rectangular housing structure; the moving contact and the static contact are both located on both sides of the linear motion direction of the moving contact.

7. The load switch according to any one of claims 4 to 6, characterized in that: A plurality of installation chambers arranged side by side are arranged in the shell structure; the arrangement direction of the plurality of installation chambers is perpendicular or parallel to the arrangement plane of the contact assemblies and the arc extinguishing assemblies arranged in the installation chambers; adjacent contact assemblies are electrically connected via the arranged connecting conductors.

8. The load switch according to claim 3, characterized in that: There are two connecting busbars located on both sides of the linear motion direction of the moving contact, and the extending direction of the connecting busbars is perpendicular to the linear motion direction.

9. The load switch according to claim 3, characterized in that: There are two connecting busbars located on the same side of the linear motion direction of the moving contact, one connecting busbar extends in a direction perpendicular to the linear motion direction, and the other connecting busbar extends in a direction parallel to the linear motion direction.

10. An electric energy meter, characterized in that: It comprises a mutual inductor and a load switch as claimed in any one of claims 1 to 9, wherein the mutual inductor is electrically connected to a connecting busbar of the load switch.

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