Moving contact driving mechanism, load switch and electricity meter

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a moving contact driving mechanism, a load switch and an electricity meter. The electromagnetic driving assembly comprises an electromagnetic coil and a rotating armature assembly, a connecting piece extending towards the moving contact assembly is fixed on the rotating armature assembly, the side, close to the moving contact assembly, of the transmission connecting piece is hinged to the moving contact assembly, and the side, close to the connecting piece, of the transmission connecting piece is hinged to the connecting piece; and the electromagnetic coil is electrified to generate an acting force for driving the rotating armature assembly to rotate, so that the connecting piece drives the moving contact assembly to realize opening or closing through the transmission connecting piece. According to the invention, the transmission structure can be simplified, the transmission efficiency is improved, and the miniaturization design of the load switch is facilitated.

Description

Technical Field

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

[0002] The load switch can cut off the rated load current and a certain overload current, and realize the closing or opening of the switch through the contact or separation of the moving contact and the static contact inside it. At present, when driving the moving contact to move, a complex transmission structure such as a push card or a gear transmission is used. The current transmission structure has too many transmission parts, resulting in too much clearance between the shaft holes of the transmission parts, which leads to the loss of the displacement transmission of the moving contact and the decrease of the transmission efficiency. In addition, due to the complex driving structure of the prior art, the assembly space occupied is large, which is not conducive to the miniaturization design of the load switch. Utility Model Content

[0003] The purpose of the present application is to provide a moving contact driving mechanism, a load switch and an electric meter, which can not only simplify the transmission structure and improve the transmission efficiency, but also facilitate the miniaturization design of the load switch.

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

[0005] In the first aspect, an embodiment of the present application provides a moving contact driving mechanism, which is arranged in cooperation with the moving contact assembly of the load switch, and the moving contact driving mechanism includes an electromagnetic driving assembly and a transmission connecting piece; the electromagnetic driving assembly includes an electromagnetic coil and a rotating armature assembly, and a connecting part extending toward the moving contact assembly is fixed on the rotating armature assembly, and the first end of the transmission connecting piece is rotationally connected to the moving contact assembly, and the second end is rotationally connected to the connecting part; the electromagnetic coil is energized to generate a force that drives the rotating armature assembly to rotate, so that the connecting part drives the moving contact assembly to rotate through the transmission connecting piece to achieve opening or closing.

[0006] As an optional embodiment, the static contact of the load switch is arranged close to the electromagnetic drive assembly, and the connecting part is driven to generate a thrust acting on the transmission connecting piece, and the thrust causes the moving contact assembly to rotate and close the switch with the static contact; the connecting part is driven to generate a pulling force acting on the transmission connecting piece, and the pulling force causes the moving contact assembly to rotate and open the switch with the static contact.

[0007] As an optional implementation, the angle between the connecting line at the hinges on both sides of the transmission connector and the connecting portion is greater than 90° and less than 180°.

[0008] As an optional embodiment, on the rotation plane of the moving contact assembly, the rotation center of the moving contact assembly, the rotation connection point between the transmission connector and the moving contact assembly, the rotation connection point between the transmission connector and the connecting part, and the rotation center of the rotating armature assembly are sequentially connected in a U-shaped arrangement.

[0009] As an optional embodiment, the transmission connecting member is a U-shaped connecting rod, one end of which is plugged into a first connecting hole provided on the connecting portion; the other end of the U-shaped connecting rod is plugged into a second connecting hole provided on the moving contact assembly.

[0010] As an optional embodiment, the electromagnetic drive assembly also includes fixed yoke plates arranged at both ends of the electromagnetic coil, and the fixed yoke plates extend toward the side of the electromagnetic coil close to the moving contact assembly. The rotating armature assembly includes a rotating bracket rotatably arranged in the middle of the fixed yoke plate and two armature plates installed on the rotating bracket; the electromagnetic coil drives the armature plate to abut against the fixed yoke plate through the electromagnetic force generated, and drives the rotating bracket to rotate.

[0011] As an optional embodiment, it also includes a micro switch, which is arranged on the side of the rotating armature assembly close to the moving contact assembly; a protruding structure corresponding to the micro switch is arranged on the rotating armature assembly, and the rotation of the rotating bracket can drive the protruding structure to trigger the micro switch.

[0012] As an optional implementation, the connecting member is a connecting swing arm, one end of which is fixed to a side of the rotating armature assembly away from the electromagnetic coil, and the other end of which extends in a direction away from the micro switch.

[0013] As an optional embodiment, the moving contact assembly includes a moving contact rod, a moving contact connecting seat, and a rotating shaft passing through the moving contact rod and the moving contact connecting seat, the moving contact connecting seat is hinged to the transmission connecting member, and the moving contact rod and the moving contact connecting seat are connected with an elastic member; when the circuit breaker is closed, the elastic member can provide an elastic supporting force to the moving contact rod.

[0014] As an optional implementation, the elastic member is a torsion spring sleeved on the rotating shaft, one end of the torsion spring is connected to the moving contact rod, and the other end is connected to a slot provided on the moving contact connection seat.

[0015] As an optional embodiment, it also includes two mounting plates arranged parallel to each other, the two mounting plates can form a containing space for accommodating the moving contact assembly, the transmission connection and the rotating armature assembly, and the rotating shaft and the rotating shaft of the rotating armature assembly are both mounted on the mounting plates. In a second aspect, the embodiment of the present application also discloses a load switch, including a housing and a moving contact drive mechanism as described above arranged in the housing, wherein a moving contact assembly and a stationary contact are arranged in the housing, and the moving contact drive mechanism can drive the moving contact assembly and the stationary contact to realize opening or closing.

[0016] As an optional embodiment, an arc extinguishing chamber is provided in the shell; a lead-out row is provided on one side of the moving contact rod, the first end of the lead-out row extends to the outside of the shell, and the second end is electrically connected to the moving contact rod through a flexible connection. The arc extinguishing chamber is located on the movement path of the moving contact assembly and is arranged close to the first end of the lead-out row, and is used to extinguish the arc generated by the opening and closing of the moving contact assembly and the static contact.

[0017] In a third aspect, an embodiment of the present application further provides an electric meter, comprising an electric meter housing, the above-mentioned load switch and a transformer, wherein the load switch and the transformer are installed inside the electric meter housing and are close to each other; wherein the electromagnetic drive component of the load switch is arranged above the transformer.

[0018] The beneficial effects of the embodiments of the present application include:

[0019] The embodiment of the present application provides a moving contact driving mechanism, which is arranged in cooperation with the moving contact assembly of the load switch, and the moving contact driving mechanism includes an electromagnetic driving assembly and a transmission connecting member; the electromagnetic driving assembly of the embodiment of the present application includes an electromagnetic coil and a rotating armature assembly, and the electromagnetic coil can drive the rotating armature assembly to rotate. A connecting portion extending toward the moving contact assembly is fixed on the rotating armature assembly of the embodiment of the present application, and the transmission connecting member is hinged to the moving contact assembly on the side close to the moving contact assembly and hinged to the connecting portion on the side close to the connecting portion; the electromagnetic coil is energized to generate a force to drive the rotating armature assembly to rotate, so that the connecting portion drives the moving contact assembly to open or close the switch through the transmission connecting member. Compared with the prior art, the embodiment of the present application realizes power transmission through only one transmission connecting member, and two hinges are formed by hinges on both sides of one transmission connecting member. Therefore, the embodiment of the present application can reduce the use of transmission parts and avoid more shaft hole matching, which is conducive to preventing displacement loss during the transmission process, thereby improving the transmission efficiency. In addition, the embodiment of the present application can effectively reduce the volume of the moving contact driving mechanism, which is conducive to miniaturization design.

[0020] The load switch of the embodiment of the present application includes a housing and a moving contact driving mechanism as described above disposed in the housing. A moving contact assembly and a stationary contact are disposed in the housing. The moving contact driving mechanism can drive the moving contact assembly and the stationary contact to realize opening or closing. Compared with the prior art, the load switch of the embodiment of the present application has the advantages of high transmission efficiency and small overall volume. The embodiment of the present application adopts the above-mentioned moving contact driving mechanism, which has fewer transmission parts, which is conducive to greatly reducing the difficulty of assembly and facilitating the production and assembly of the load switch.

[0021] The electric meter of the embodiment of the present application includes an electric meter housing, the above-mentioned load switch and a mutual inductor, wherein the load switch and the mutual inductor are installed inside the electric meter housing and close to each other; wherein the electromagnetic drive component of the load switch is arranged above the mutual inductor. The embodiment of the present application enables the load switch and the mutual inductor to be compactly arranged inside the electric meter housing, so that the electromagnetic drive component is far away from the side wall of the electric meter housing, thereby making the electromagnetic drive component less susceptible to magnetic field interference outside the electric meter, ensuring that the electromagnetic drive component can stably and reliably control the opening and closing of the load switch, and effectively reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 This is one of the structural schematic diagrams of the moving contact driving mechanism of the embodiment of the present application;

[0024] Figure 2 This is the second structural diagram of the moving contact driving mechanism of the embodiment of the present application;

[0025] Figure 3 This is one of the structural schematic diagrams of the load switch in the embodiment of the present application;

[0026] Figure 4 This is the second structural diagram of the load switch in the embodiment of the present application;

[0027] Figure 5 This is the third structural diagram of the load switch of the embodiment of the present application;

[0028] Figure 6 This is one of the structural schematic diagrams of the electric meter in the embodiment of the present application;

[0029] Figure 7 This is the second structural schematic diagram of the electric meter in the embodiment of the present application;

[0030] Figure 8 This is the third structural diagram of the moving contact driving mechanism of the embodiment of the present application;

[0031] Fig. 9 This is the fourth structural diagram of the moving contact driving mechanism of the embodiment of the present application;

[0032] Fig.10 Structural schematic diagram 5 of the movable contact driving mechanism of the embodiment of the present application;

[0033] Fig.11 This is the fourth structural diagram of the load switch of the embodiment of the present application;

[0034] Fig.12 This is the fifth structural schematic diagram of the load switch according to the embodiment of the present application.

[0035] icon:

[0036] 100-moving contact assembly; 101-electromagnetic drive assembly; 102-transmission connector; 103-electromagnetic coil; 104-rotating armature assembly; 105-connecting part; 106-static contact; 107-first connecting hole; 108-second connecting hole; 109-fixed yoke plate; 110-rotating bracket; 111-armature plate; 112-micro switch; 113-protruding structure; 114-moving contact rod; 115-moving contact connecting seat; 116-rotating shaft; 117-mounting plate; 118-load switch; 119-housing; 120-arc extinguishing chamber; 121-electric meter housing; 122-transformer; 123-torsion spring; 124-slot; 125-shielding cover; 126-lead row; 127-soft connection; 128-sinking platform; 129-through hole; 130-guide groove; a-angle. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The load switch 118 can cut off the rated load current and a certain overload current, and realize the closing or opening of the switch through the contact or separation of the moving contact and the static contact 106 inside it. At present, when driving the moving contact to move, a complex transmission structure such as a push card or a gear transmission is used. The current transmission structure has too many transmission parts, resulting in too much clearance between the shaft holes of the transmission parts, which leads to the loss of the displacement transmission of the moving contact and the decrease of the transmission efficiency. In addition, due to the complexity of the driving structure of the prior art, the assembly space occupied is large, which is not conducive to the miniaturization design of the load switch 118.

[0042] In order to solve the above technical problems, an embodiment of the present application provides a moving contact driving mechanism and a load switch 118.

[0043] Reference Figure 1 , Figure 2 As shown, an embodiment of the present application provides a moving contact driving mechanism, which is arranged in cooperation with the moving contact assembly 100 of the load switch 118, and the moving contact driving mechanism includes an electromagnetic driving assembly 101 and a transmission connecting member 102; the electromagnetic driving assembly 101 includes an electromagnetic coil 103 and a rotating armature assembly 104, and a connecting portion 105 extending toward the moving contact assembly 100 is fixed on the rotating armature assembly 104, and a first end of the transmission connecting member 102 is rotationally connected to the moving contact assembly 100, and a second end is rotationally connected to the connecting portion 105; when the electromagnetic coil 103 is energized, a force that drives the rotating armature assembly 104 to rotate is generated, so that the connecting portion 105 drives the moving contact assembly 100 to rotate through the transmission connecting member 102 to realize opening or closing.

[0044] It should be noted that the electromagnetic coil 103 of the embodiment of the present application can be energized to drive the rotating armature assembly 104 to rotate clockwise or counterclockwise. Among them, the electromagnetic drive assembly 101 includes the electromagnetic coil 103 and fixed yoke plates 109 arranged at both ends of the electromagnetic coil 103, the fixed yoke plate 109 extends to the side of the electromagnetic coil 103 close to the moving contact assembly 100, and the rotating armature assembly 104 includes a rotating bracket 110 rotatably arranged in the middle of the fixed yoke plate 109 and two armature plates 111 installed on the rotating bracket 110; the electromagnetic coil 103 drives the armature plate 111 to rotate around its rotation center through the electromagnetic force generated to abut against the fixed yoke plate 109, and drives the rotating bracket 110 to rotate.

[0045] It should be noted that the rotating bracket 110 of the rotating yoke assembly and the moving contact assembly 100 can be rotatably installed in the housing 119 of the load switch 118, or a modular carrier. In the shaft hole matching of the entire mechanism, the rotating bracket 110 and the moving contact assembly 100 are both rotating structures formed by the shaft hole matching. Compared with the prior art, the embodiment of the present application is connected between the rotating bracket 110 and the moving contact assembly 100 by only one transmission connector 102, so the transmission structure only forms two shaft hole matching parts, which effectively reduces the gap caused by the matching of multiple shaft holes, which is conducive to reducing the difficulty of accessory production and assembly. Compared with the prior art, the embodiment of the present application has only one transmission connector 102, and it is only necessary to ensure the assembly accuracy of the transmission connector 102 at the hinges with the moving contact assembly 100 and the hinges with the connecting part 105, which is conducive to reducing the gap caused by the shaft hole matching.

[0046] The embodiment of the present application provides a moving contact driving mechanism, which is arranged in cooperation with the moving contact assembly 100 of the load switch 118, and the moving contact driving mechanism includes an electromagnetic driving assembly 101 and a transmission connecting member 102; the electromagnetic driving assembly 101 of the embodiment of the present application includes an electromagnetic coil 103 and a rotating armature assembly 104, and the electromagnetic coil 103 can drive the rotating armature assembly 104 to rotate. A connecting portion 105 extending toward the moving contact assembly 100 is fixed on the rotating armature assembly 104 of the embodiment of the present application, and the transmission connecting member 102 is hinged to the moving contact assembly 100 on the side close to the moving contact assembly 100 and is hinged to the connecting portion 105 on the side close to the connecting portion 105. The design of the connecting portion 105 facilitates assembly with the transmission connecting member 102 while reducing the overall volume of the rotating armature assembly 104; the electromagnetic coil 103 is energized to generate a force to drive the rotating armature assembly 104 to rotate, so that the connecting portion 105 drives the moving contact assembly 100 through the transmission connecting member 102 to achieve opening or closing. Compared with the prior art, the embodiment of the present application realizes power transmission through only one transmission connection member 102, and two sides of one transmission connection member 102 are hinged to form two hinges. Therefore, the embodiment of the present application can avoid more shaft hole matching, which is conducive to preventing displacement loss during the transmission process, thereby improving the transmission efficiency. In addition, the embodiment of the present application can effectively reduce the volume of the moving contact drive mechanism, which is conducive to miniaturization design.

[0047] Reference Figure 1 and Figure 2 As shown, as an optional embodiment, the static contact 106 of the load switch 118 is arranged close to the electromagnetic drive assembly 101, and the connecting part 105 is driven to generate a thrust acting on the transmission connection 102, so that the moving contact assembly 100 and the static contact 106 are closed. Further, at this time, the angle between the connecting line at the hinges on both sides of the transmission connection 102 and the connecting part 105 increases; the connecting part 105 is driven to generate a pulling force acting on the transmission connection 102 to open the moving contact assembly 100 and the static contact 106. Further, at this time, the angle between the connecting line at the hinges on both sides of the transmission connection 102 and the connecting part 105 decreases.

[0048] Reference Figure 5 As shown, further, the angle a between the connecting line at the hinges on both sides of the transmission connecting member 102 of the embodiment of the present application and the connecting portion 105 is greater than 90° and less than 180°.

[0049] Furthermore, on the rotation plane of the moving contact assembly 100, the rotation center of the moving contact assembly 100, the rotation connection point between the transmission connector 102 and the moving contact assembly 100, the rotation connection point between the transmission connector 102 and the connecting portion 105, and the rotation center of the rotating armature assembly 104 are sequentially connected to form a U-shaped arrangement. The opening of the U-shaped arrangement faces the micro switch, so that the micro switch 112 does not interfere with the movement path of the connecting portion 105, a compact layout can be achieved, and it is beneficial to reduce the volume of the housing 119 of the load switch 118.

[0050] It should be noted that the embodiment of the present application can generate a large driving torque through the above-mentioned configuration, has a large torque transmission ratio, and avoids the use of an electromagnetic coil 103 with a large driving force. In other words, when the initial torque generated by the electromagnetic coil 103 is transmitted to the moving contact assembly 100, the torque loss is small. In other words, the embodiment of the present application can use an electromagnetic coil 103 with a small driving force to meet the stable closing of the moving contact assembly 100 and the static contact, and realize the control of the opening and closing of the moving contact assembly 100.

[0051] It should be noted that, in the embodiment of the present application, a larger thrust is generated by increasing the angle a between the connecting line at the hinges on both sides of the transmission connector 102 and the connecting portion 105, so as to achieve the closing of the moving contact assembly 100 and the stationary contact 106. The connecting portion 105 is driven to generate a pulling force acting on the transmission connector 102, and the angle a between the connecting line at the hinges on both sides of the transmission connector 102 and the connecting portion 105 is reduced, so that the moving contact assembly 100 and the stationary contact 106 are opened.

[0052] Among them, when the embodiment of the present application is closed, the contact pressure acts on the driving side formed by the electromagnetic drive component 101 and the transmission connector 102, which can effectively reduce the driving torque required for opening and closing the switch.

[0053] Reference Figure 1 and Figure 2 As shown, as an optional embodiment, the transmission connecting member 102 is a U-shaped connecting rod, one end of the U-shaped connecting rod is plugged into a first connecting hole 107 provided on the connecting portion 105; the other end of the U-shaped connecting rod is plugged into a second connecting hole 108 provided on the moving contact assembly 100.

[0054] The embodiment of the present application discloses the specific structure of the transmission connector 102. The embodiment of the present application adopts a U-shaped connecting rod as the transmission connector 102, so that the two ends of the U-shaped connecting rod are respectively plugged into the first connecting hole 107 and the second connecting hole 108, thereby realizing the plug-in shaft hole matching without the need for additional installation of the transmission connector 102.

[0055] It should be noted that those skilled in the art may select different transmission connectors 102 as needed, and there is no special limitation on this.

[0056] Reference Figure 1 and Figure 8 As shown, as an optional embodiment, it also includes a micro switch 112, which is arranged on the side of the rotating armature assembly 104 close to the moving contact assembly 100; a protruding structure 113 corresponding to the micro switch 112 is arranged on the rotating armature assembly 104, and the rotation of the rotating bracket 110 can drive the protruding structure 113 to trigger the micro switch 112.

[0057] Among them, the connecting part 105 is a connecting swing arm, one end of the connecting swing arm is fixed on the side of the rotating armature assembly 104 away from the electromagnetic coil 103, and the other end extends in the direction away from the micro switch 112, which can further reduce the torque required for opening and closing the moving contact assembly 100 and make the overall layout of the moving contact drive mechanism more reasonable and compact.

[0058] It should be noted that the embodiment of the present application realizes accurate detection of the opening and closing states through the micro switch 112. In particular, the embodiment of the present application arranges the micro switch 112 and the connecting portion 105 on the side of the armature plate 111 close to the moving contact assembly 100, wherein the micro switch 112 does not interfere with the movement path of the connecting portion 105, and a compact layout can be achieved, which is conducive to reducing the volume of the housing 119 of the load switch 118.

[0059] Reference Figure 2 As shown, as an optional embodiment, the moving contact assembly 100 includes a moving contact rod 114, a moving contact connection seat 115, and a rotating shaft 116 passing through the moving contact rod 114 and the moving contact connection seat 115, the moving contact connection seat 115 is hinged to the transmission connection member 102, and an elastic member is connected between the moving contact rod 114 and the moving contact connection seat 115. The elastic member is specifically a torsion spring 123 sleeved on the rotating shaft 116, one end of the torsion spring 123 is connected to the moving contact rod 114, and the other end is connected to the card slot 124 provided on the moving contact connection seat 115.

[0060] It should be noted that one end of the torsion spring 123 is in contact with the slot 124 provided on the moving contact connection seat 115. Figure 2 As shown, the other end of the torsion spring 123 can abut against the moving contact rod 114. Figure 8 As shown, the other end of the torsion spring 123 may also be installed in a manner of being plugged into a connecting through hole provided on the moving contact rod 114, which is not limited here.

[0061] Reference Figure 3 , Figure 4 as well as Fig. 9As shown, as an optional embodiment, the moving contact drive mechanism also includes two mutually parallel mounting plates 117, and the two mounting plates 117 form a storage space for accommodating the moving contact assembly 100, the transmission connection 102 and the rotating armature assembly 104, so that the structures of the moving contact assembly 100, the transmission connection 102 and the rotating armature assembly 104 can be integrated and modularized, so that personnel have a larger operating space to assemble these parts, and it is convenient to install and repair the product. Further, the rotating shaft 116 and the rotating shaft of the rotating armature assembly 104 are both installed on the two mounting plates 117, so that the moving contact assembly 100, the rotating armature assembly and the two mounting plates 117 have a stable connection and installation relationship, and will not shake in the aforementioned formed storage space.

[0062] It should be noted that the embodiment of the present application facilitates the integrated assembly of the moving contact assembly 100 through a modular design. Compared with assembling the moving contact assembly 100 in a small space in the housing 119, the embodiment of the present application can effectively reduce the difficulty of assembly and improve the assembly efficiency of the moving contact assembly 100.

[0063] Reference Figure 3 and Figure 4 As shown, the embodiment of the present application also discloses a load switch 118, including a shell 119 and a moving contact driving mechanism as above arranged in the shell 119, a moving contact assembly 100 and a stationary contact 106 are arranged in the shell 119, and the moving contact driving mechanism can drive the moving contact assembly 100 and the stationary contact 106 to realize opening or closing.

[0064] Reference Figure 3 and Figure 4 As shown, an arc extinguishing chamber 120 is provided in the shell 119; a lead row 126 is provided on one side of the moving contact rod 114, the first end of the lead row 126 extends to the outside of the shell 119, and the second end is electrically connected to the moving contact rod 114 through a flexible connection 127, and the arc extinguishing chamber 120 is located on the movement path of the moving contact assembly 100 and is arranged close to the first end of the lead row 126.

[0065] The moving contact rod 114 is electrically connected to an external power source through a lead-out row 126, and the moving contact rod 114, the flexible connection 127, and the lead-out row 126 are sequentially connected to form a U-shaped structure. An arc extinguishing chamber 120 is provided in the housing 119, and the arc extinguishing chamber 120 is provided on the moving path of the moving contact assembly 100 and is located on one side of the U-shaped opening, and is used to extinguish the arc generated by the opening and closing of the moving contact assembly 100 and the static contact 106.

[0066] Compared with the prior art, the load switch 118 of the embodiment of the present application has the advantages of high transmission efficiency and small overall volume. The embodiment of the present application adopts the above-mentioned moving contact drive mechanism, with fewer transmission parts, which is conducive to greatly reducing the difficulty of assembly and facilitating the production and assembly of the load switch 118.

[0067] Among them Fig.10 As shown, at least one side of the movable contact rod 114 at the assembly position with the rotating shaft 116 and the movable contact connection seat 115 can be provided with a sink 128 to make way for easy assembly. Further, the movable contact assembly 100 that can be provided in the housing 119 of the load switch of the embodiment of the present application can be provided with a plurality of movable contact rods 114, and the plurality of movable contact rods 114 can be arranged in sequence along the rotation axis of the movable contact assembly 100.

[0068] In one embodiment, there are two moving contact rods 114, and the moving contact connection seat 115 is disposed between the two moving contact rods 114. The housing 119 having the installation chamber is formed by buckling two housing structures, and the two housing structures can be connected by a plurality of spaced-apart buckle assemblies.

[0069] Reference Fig.11 and Fig.12 As shown, a shielding cover 125 is also provided on the housing 119, and the shielding cover 125 is correspondingly arranged around the outer periphery of the electromagnetic drive assembly 101. The shielding cover 125 can be a U-shaped shielding cover, which is clamped on the outside of the housing 119. Further, at least one convex portion is provided on one surface of the load switch housing 119, and the U-shaped shielding cover 125 is correspondingly provided with at least one through hole 129, which is used to cooperate with the convex portion so that the U-shaped shielding cover 125 is stably clamped on the housing 119 of the load switch; a guide groove 130 is also provided on the opposite surface of the convex portion setting surface of the load switch housing 119 to guide the U-shaped shielding cover 125 to the appropriate position of the load switch housing.

[0070] Reference Figure 6 and Figure 7 As shown, an embodiment of the present application also provides an electric meter, including an electric meter housing 121, a load switch and a transformer 122, wherein the load switch and the transformer 122 are installed inside the electric meter housing 121 and are close to each other; wherein the electromagnetic drive component 101 of the load switch is arranged above the transformer 122.

[0071] Through the above-mentioned arrangement, the present application can not only arrange the load switch and the mutual inductor 122 compactly inside the meter housing 121, which is convenient for line connection between the load switch, the mutual inductor 122 and the meter housing, but also simplify the line arrangement and shorten the wiring path. It can also make the electromagnetic drive component 101 away from the side wall of the meter housing 121, and there is a large distance between the electromagnetic drive component 101 and the meter housing 121, so that the electromagnetic drive component 101 is not easily affected by the magnetic field outside the meter, ensuring that the electromagnetic drive component 101 can stably and reliably control the opening and closing of the load switch, effectively reducing the failure rate.

[0072] 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 moving contact driving mechanism, arranged in cooperation with a moving contact assembly (100) of a load switch (118), characterized in that: The movable contact driving mechanism comprises an electromagnetic driving assembly (101) and a transmission connecting member (102); the electromagnetic driving assembly (101) comprises an electromagnetic coil (103) and a rotating armature assembly (104); a connecting portion (105) extending toward the movable contact assembly (100) is fixed to the rotating armature assembly (104); a first end of the transmission connecting member (102) is rotationally connected to the movable contact assembly (100), and a second end is rotationally connected to the connecting portion (105); when the electromagnetic coil (103) is energized, a force driving the rotating armature assembly (104) to rotate is generated, so that the connecting portion (105) drives the movable contact assembly (100) to rotate through the transmission connecting member (102) to realize opening or closing.

2. The moving contact driving mechanism according to claim 1, characterized in that: The connecting portion (105) is driven to generate a thrust acting on the transmission connecting member (102), and the thrust causes the moving contact assembly (100) to rotate and close with the static contact (106) of the load switch (118); the connecting portion (105) is driven to generate a pulling force acting on the transmission connecting member (102), and the pulling force causes the moving contact assembly (100) to rotate and open with the static contact (106).

3. The moving contact driving mechanism according to claim 1, characterized in that: On the rotation plane of the moving contact assembly (100), the rotation center of the moving contact assembly (100), the rotation connection point between the transmission connecting member (102) and the moving contact assembly (100), the rotation connection point between the transmission connecting member (102) and the connecting portion (105), and the rotation center of the rotating armature assembly (104) are sequentially connected to form a U-shaped arrangement.

4. The moving contact driving mechanism according to claim 1, characterized in that: The transmission connecting member (102) is a U-shaped connecting rod, one end of which is plugged into a first connecting hole (107) provided on the connecting portion (105); and the other end of the U-shaped connecting rod is plugged into a second connecting hole (108) provided on the moving contact assembly (100).

5. The moving contact driving mechanism according to any one of claims 1 to 4, characterized in that: The electromagnetic drive assembly (101) further comprises fixed yoke plates (109) arranged at both ends of the electromagnetic coil (103), the fixed yoke plates (109) extending toward the side of the electromagnetic coil (103) close to the moving contact assembly (100), and the rotating armature assembly (104) comprises a rotating bracket (110) rotatably arranged in the middle of the fixed yoke plate (109) and two armature plates (111) mounted on the rotating bracket (110); the electromagnetic coil (103) drives the armature plate (111) to abut against the fixed yoke plate (109) through the electromagnetic force generated, and drives the rotating bracket (110) to rotate.

6. The moving contact driving mechanism according to claim 5, characterized in that: The invention also comprises a micro switch (112), wherein the micro switch (112) is arranged on a side of the rotating armature assembly (104) close to the moving contact assembly (100); a protruding structure (113) corresponding to the micro switch (112) is arranged on the rotating armature assembly (104), and the rotating bracket (110) can drive the protruding structure (113) to trigger the micro switch (112) when rotating.

7. The moving contact driving mechanism according to claim 6, characterized in that: The connecting portion (105) is a connecting swing arm, the end of which is fixed to a side of the rotating armature assembly (104) away from the electromagnetic coil (103), and the other end of which extends in a direction away from the micro switch (112).

8. The moving contact driving mechanism according to any one of claims 1 to 4, characterized in that: The moving contact assembly (100) comprises a moving contact rod (114), a moving contact connection seat (115), and a rotating shaft (116) passing through the moving contact rod (114) and the moving contact connection seat (115); the moving contact connection seat (115) is hinged to the transmission connection member (102); the moving contact rod (114) and the moving contact connection seat (115) are connected by an elastic member; when the switch is closed, the elastic member can provide contact pressure to the moving contact rod (114).

9. The moving contact driving mechanism according to claim 8, characterized in that: The elastic member is a torsion spring (123) sleeved on the rotating shaft (116); one end of the torsion spring (123) is connected to the moving contact rod (114), and the other end is connected to a slot provided on the moving contact connection seat (115).

10. The moving contact driving mechanism according to claim 8, characterized in that: It also includes two mounting plates (117) arranged parallel to each other, and the two mounting plates (117) can form a storage space for accommodating the moving contact assembly (100), the transmission connecting member (102) and the rotating armature assembly (104), and the rotating shaft (116) and the rotating shaft of the rotating armature assembly (104) are both installed on the mounting plates (117).

11. A load switch, characterized in that: It comprises a shell (119) and a moving contact driving mechanism as described in any one of claims 8 to 10 arranged in the shell (119), wherein a moving contact assembly (100) and a stationary contact (106) are arranged in the shell (119), and the moving contact driving mechanism can drive the moving contact assembly (100) and the stationary contact (106) to realize opening or closing.

12. The load switch according to claim 11, characterized in that: An arc extinguishing chamber (120) is arranged in the shell (119); a lead row (126) is arranged on one side of the moving contact rod (114); a first end of the lead row (126) extends to the outside of the shell (119), and a second end is electrically connected to the moving contact rod (114) via a flexible connection (127); the arc extinguishing chamber (120) is located on the moving path of the moving contact assembly (100) and is arranged close to the first end of the lead row (126), and is used to extinguish the arc generated by the opening and closing of the moving contact assembly (100) and the static contact (106).

13. An electric meter, characterized in that: It comprises an electric meter housing (121), a load switch as claimed in claim 11 or 12, and a mutual inductor (122), wherein the load switch and the mutual inductor (122) are installed inside the electric meter housing (121) and close to each other; wherein the electromagnetic drive component (101) of the load switch is arranged above the mutual inductor (122).

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