Load switch and ammeter

Abstract

The invention provides a load switch and an ammeter, and relates to the technical field of electrical equipment. The load switch comprises a shell, an electromagnetic mechanism, a contact assembly and an arc extinguishing assembly, the electromagnetic mechanism, the contact assembly and the arc extinguishing assembly are arranged in the shell, the contact assembly comprises a moving contact and a static contact, and the moving contact is used for being driven by the electromagnetic mechanism to be switched on or switched off with the static contact; the contact assembly is located on one side of the electromagnetic mechanism in the first direction, the arc extinguishing assembly is located on one side of the electromagnetic mechanism in the second direction, the first direction is perpendicular to the second direction, and the projection of the electromagnetic mechanism on the plane perpendicular to the second direction and the projection of the arc extinguishing assembly on the plane perpendicular to the second direction at least partially coincide. And the utilization of the internal space of the shell can be optimized, the assembly efficiency is improved, and the space utilization rate, the safety and the integration level of the product are also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and in particular to a load switch and an electric meter. Background Art

[0002] In existing electronic devices or switchgear, load switches are key components for achieving circuit on / off control. Their layout design has a significant impact on overall performance, safety, and space utilization. However, current load switch structural design and layout methods still have many shortcomings.

[0003] Specifically, multiple electrical components of the load switch are distributed or arranged in a disordered manner inside the shell, lacking reasonable space planning, resulting in the internal space of the shell not being fully utilized, limiting the overall miniaturization and integration development of the equipment. Summary of the Invention

[0004] The present invention provides a load switch and an electric meter, which can not only optimize the utilization of the internal space of a shell and improve the assembly efficiency, but also improve the space utilization, safety and integration level of the product.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a load switch, comprising a housing, an electromagnetic mechanism, a contact assembly, and an arc extinguishing assembly disposed within the housing, wherein the electromagnetic mechanism comprises an armature assembly and a coil assembly, the contact assembly comprises a movable contact and a stationary contact, the movable contact being configured to close or open the switch with the stationary contact under the drive of the electromagnetic mechanism; In which, the contact assembly is located on one side of the electromagnetic mechanism along the first direction, and the arc extinguishing assembly is located on one side of the electromagnetic mechanism along the second direction, the first direction is perpendicular to the second direction, and the projection of the electromagnetic mechanism on the plane perpendicular to the second direction at least partially overlaps with the projection of the arc extinguishing assembly on the plane perpendicular to the second direction.

[0006] In an optional embodiment, the load switch further includes a wiring assembly, at least a portion of which is located outside the housing and at least another portion is connected to the contact assembly, and the arc extinguishing assembly is located on one side of the electromagnetic mechanism along the second direction and close to the wiring assembly.

[0007] In an optional embodiment, the wiring assembly includes a first wiring member and a second wiring member, and the second wiring member is closer to the electromagnetic mechanism than the first wiring member; At least a portion of the arc extinguishing assembly projected along the second direction is located between the first wiring member and the second wiring member, and at least another portion of the arc extinguishing assembly projected along the second direction is located on a side of the second wiring member away from the first wiring member.

[0008] In an optional embodiment, the arc extinguishing assembly includes a second grid, one end of the first wiring member is connected to the static contact, and the other end extends outside the housing, and one end of the second wiring member is connected to the moving contact, and the other end extends outside the housing; The contact assembly further includes a conductive member, and the movable contact is connected to the second wiring member via the conductive member.

[0009] In an optional embodiment, the arc extinguishing assembly further includes at least one first grid plate, wherein the first grid plate is located between the second grid plate and the electromagnetic mechanism, and the length of the at least one first grid plate extends along the first direction.

[0010] In an optional embodiment, the second grid includes a straight section and a bent section connected in sequence, the length of the straight section extends along the first direction, the bent section is connected to the static contact, the straight section and the conductive member are arranged along a third direction, and the projections of the straight section and the conductive member along the second direction do not overlap, and the third direction is perpendicular to both the first direction and the second direction.

[0011] In an optional embodiment, in the closed state, the conductive member and the static contact are arranged on both sides of the moving contact along the first direction, and in the closed state, the current direction of at least part of the conductive member is opposite to the current direction of the moving contact.

[0012] In an optional embodiment, the conductive member includes a first section and a second section connected in sequence, the other end of the first section is connected to the moving contact so that the current direction of the first section is opposite to the current direction of the moving contact, and the first section is located on one side of the moving contact along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0013] In an optional embodiment, the arc extinguishing assembly further includes at least one first grid, the length of the first grid extends along the first direction, the second grid includes a straight section and a bent section connected in sequence, the straight section is arranged parallel to the first grid, the bent section is connected to the static contact, and the second section and the straight section are arranged along a third direction.

[0014] In an optional embodiment, the contact assembly further includes a rotating shaft, the static contact is provided with a static contact part, one end of the moving contact is provided with a moving contact part, and the other end is rotatably provided on the shell through the rotating shaft, the moving contact part is used to contact or separate from the static contact part, and the moving contact part and the static contact part are located between the rotating shaft and the wiring assembly.

[0015] In an optional embodiment, the load switch further includes a transmission member, one end of the transmission member is connected to the armature assembly, and the other end is connected to the moving contact, and the transmission member is used to drive the moving contact portion of the moving contact to rotate around the rotating shaft; The moving contact is further provided with a connecting portion between the rotating shaft and the moving contact portion, the transmission member is connected to the connecting portion, and the distance between the connecting portion and the moving contact portion is smaller than the distance between the connecting portion and the rotating shaft.

[0016] In an optional embodiment, the load switch further includes a suction-assisting member, which is arranged on the shell. The suction-assisting member is used to abut against the armature assembly to store energy in the open state so that the moving contact has a movement tendency toward the static contact, and the suction-assisting member and the moving contact are arranged along the second direction.

[0017] In an optional embodiment, the load switch also includes an elastic member, which is arranged between the armature assembly and the transmission member. The armature assembly is provided with a waist-shaped hole, and the transmission member is movably arranged in the waist-shaped hole so that the armature assembly and the transmission member can rotate and move relative to each other.

[0018] In an optional embodiment, the armature assembly includes an armature shaft, the axial direction of the armature shaft is along a third direction, the waist-shaped hole is located on the side of the armature shaft away from the coil of the coil assembly along the first direction, and is located on the side of the armature shaft close to the arc extinguishing assembly along the second direction, and the third direction is perpendicular to both the first direction and the second direction.

[0019] In an optional embodiment, the connecting portion is a groove structure or a through-hole structure, the moving contact includes a moving contact rod, one end of the moving contact rod is connected to the moving contact portion, and the other end is connected to the rotating shaft, and the connecting portion and the moving contact rod are integrally formed.

[0020] In an optional embodiment, the moving contact is located between the static contact and the electromagnetic mechanism, one end of the moving contact is fixed relative to the static contact, and the other end approaches or moves away from the static contact under the drive of the electromagnetic mechanism, the coil axis of the coil assembly is along the second direction, and the projection of the coil on the plane perpendicular to the second direction at least partially overlaps with the projection of the arc extinguishing assembly on the plane perpendicular to the second direction.

[0021] In an optional embodiment, the load switch also includes a magnetic shielding member, which is covered on the shell, at least part of the moving contact is located in the space covered by the magnetic shielding member, and the length of the coil in the coil assembly along the second direction is greater than the length of the magnetic shielding member along the second direction.

[0022] In a second aspect, the present invention provides an electric meter, comprising a meter case and a load switch as described in any one of the aforementioned embodiments arranged in the meter case.

[0023] The beneficial effects of the load switch and electric meter provided by the embodiments of the present invention include: by positioning the contact assembly on one side of the electromagnetic mechanism along the first direction and the arc extinguishing assembly on one side of the electromagnetic mechanism along the second direction, the overall structural layout of the load switch is made more compact, which is beneficial to reducing the overall volume of the load switch and improving space utilization; and the projection of the electromagnetic mechanism on the plane perpendicular to the second direction and the projection of the arc extinguishing assembly on the plane perpendicular to the second direction at least partially overlap, further optimizing the internal structural layout of the product, reducing unnecessary space waste, and contributing to the miniaturization and modular design of the product, meeting the development needs of modern electrical equipment for high integration and miniaturization; not only that, the above arrangement method can achieve normal opening and closing actions of the contact assembly under the drive of the electromagnetic mechanism without affecting the moving contact and the static contact, ensuring the reliability of the circuit breaking function. At the same time, the arc generated during the opening process can be reasonably guided to the arc extinguishing assembly for rapid extinguishing, ensuring operational safety and improving arc extinguishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the load switch structure provided by an embodiment of the present invention; Figure 2 One of the structural diagrams of the load switch provided in the embodiment of the present invention; Figure 3 A schematic diagram of the structure of an arc extinguishing assembly from a first perspective according to an embodiment of the present invention; Figure 4 A schematic structural diagram of an arc extinguishing assembly from a second perspective according to an embodiment of the present invention; Figure 5 A schematic diagram of the structure of the moving contact part and the static contact part provided in an embodiment of the present invention; Figure 6 The second schematic diagram of the structure of the load switch provided by the embodiment of the present invention; Figure 7 The third schematic diagram of the structure of the load switch provided by the embodiment of the present invention; Figure 8 The fourth structural diagram of the load switch provided by the embodiment of the present invention; Figure 9 The fifth structural diagram of the load switch provided by the embodiment of the present invention; Figure 10 This is a schematic structural diagram of another embodiment of a coil provided in an embodiment of the present invention.

[0026] Icons: 10-load switch; 100-housing; 200-electromagnetic mechanism; 210-armature assembly; 211-first armature; 212-second armature; 213-armature shaft; 214-waisted hole; 215-convex rib; 220-coil assembly; 221-coil; 222-yoke; 300-contact assembly; 310-moving contact; 311-moving contact part; 312-rotating shaft; 313-connecting part; 314-moving contact rod; 320-static contact; 321-static contact part; 3 30-conductive part; 331-first section; 332-second section; 400-arc extinguishing assembly; 410-first grid; 420-second grid; 421-straight section; 422-bent section; 423-installation portion; 500-wiring assembly; 510-first wiring member; 520-second wiring member; 600-transmission member; 700-suction aid; 800-elastic member; 810-bent portion; 900-magnetic shielding member; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0032] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0033] In existing electronic devices or switchgear, load switches are key components for achieving circuit on / off control. Their layout design has a significant impact on overall performance, safety, and space utilization. However, current load switch structural design and layout methods still have many shortcomings.

[0034] Specifically, multiple electrical components of the load switch are distributed or arranged in a disordered manner inside the shell, lacking reasonable space planning, resulting in the internal space of the shell not being fully utilized, limiting the overall miniaturization and integration development of the equipment.

[0035] Based on the problems existing in the existing technology, please refer to Figures 1 to 10 The embodiment of the present invention provides a load switch 10 with a reasonable spatial layout, which can not only optimize the internal space utilization of the shell 100 and improve assembly efficiency, but also improve the space utilization, safety and integration level of the product.

[0036] In detail, the load switch 10 includes a housing 100 , and an electromagnetic mechanism 200 , a contact assembly 300 , and an arc extinguishing assembly 400 disposed in the housing 100 .

[0037] The contact assembly 300 includes a moving contact 310 and a stationary contact 320 . The moving contact 310 is used to contact the stationary contact 320 to close the circuit breaker under the drive of the electromagnetic mechanism 200 , or to separate from the stationary contact 320 to open the circuit breaker under the drive of the electromagnetic mechanism 200 .

[0038] In this embodiment, by locating the contact assembly 300 on one side of the electromagnetic mechanism 200 along the first direction X and the arc extinguishing assembly 400 on one side of the electromagnetic mechanism 200 along the second direction Y, the overall structural layout of the load switch 10 is made more compact, which is beneficial to reducing the overall volume of the load switch and improving space utilization; and the projection of the electromagnetic mechanism 200 on the plane perpendicular to the second direction Y (i.e., the projection formed by projecting along the second direction Y) and the projection of the arc extinguishing assembly 400 on the plane perpendicular to the second direction Y at least partially overlap, further optimizing the internal structural layout of the product, reducing unnecessary space waste, and contributing to the miniaturization and modular design of the product, thereby increasing the arc extinguishing space and meeting the development needs of modern electrical equipment for high integration and miniaturization.

[0039] Furthermore, this arrangement ensures that the normal opening and closing of the contact assembly 300, driven by the electromagnetic mechanism 200, remains unaffected. The movable contact 310 can still stably contact or separate from the stationary contact 320, ensuring the reliability of the circuit's on-off function. Furthermore, the arc generated during the opening process is properly guided to the arc extinguishing assembly 400 for rapid extinguishing, ensuring operational safety and improving arc extinguishing efficiency.

[0040] It should be noted that the first direction X is perpendicular to the second direction Y. The first direction X is also the length direction of the housing 100 , and the second direction Y is also the height direction of the housing 100 .

[0041] Further, if Figure 3 and Figure 4 As shown, the arc extinguishing assembly 400 includes a second grid piece 420 ; further, the arc extinguishing assembly 400 also includes at least one first grid piece 410 , and the first grid piece 410 is located between the second grid piece 420 and the electromagnetic mechanism 200 .

[0042] Specifically, the second grid plate 420 includes a straight section 421 and a bent section 422 connected in sequence. The straight section 421 extends along the first direction X and is arranged parallel to the first grid plate 410; further, the bent section 422 extends along a direction that forms an angle with the second direction Y.

[0043] The second grid piece 420 is connected to the static contact 320. Specifically, a U-shaped mounting portion 423 is provided at the end of the bent section 422. The mounting portion 423 is arranged around the static contact portion 321 of the static contact 320. The straight section 421 is arranged parallel to the multiple first grid pieces 410. Therefore, when the moving contact 310 and the static contact 320 are closed or opened to generate an arc, the arc can be effectively ignited through the straight section 421 and the bent section 422.

[0044] In order to further improve the arc striking and arc extinguishing capabilities of the arc extinguishing assembly 400, the arc extinguishing assembly 400 also includes at least one first grid piece 410. The length extension direction of the first grid piece 410 is perpendicular to the second direction Y. In other words, the multiple first grid pieces 410 are arranged at intervals and are all parallel to the first direction X. The moving contact 310 and the static contact 320 are located at one end of the first grid piece 410, and the exhaust port opened on the housing 100 is located at the other end of the first grid piece 410. Therefore, the arc generated by the moving contact 310 and the static contact 320 moves along the length direction of the first grid piece 410, which can effectively consume the energy of the arc and prevent the arc from being directly ejected from the exhaust port and causing damage to other components outside the housing 100.

[0045] It is worth mentioning that at the end of the first grid piece 410 and the second grid piece 420 away from the static contact 320 and the moving contact 310, the distance between the end of the first grid piece 410 and the housing 100 is smaller than the distance between the end of the second grid piece 420 and the housing 100, thereby optimizing the arc movement path and ensuring the arc extinguishing effect.

[0046] Furthermore, the load switch 10 also includes a wiring assembly 500, at least part of which is located outside the housing 100 and at least another part is connected to the contact assembly 300, and the arc extinguishing assembly 400 is located on one side of the electromagnetic mechanism 200 along the second direction Y and close to the wiring assembly 500.

[0047] Specifically, the terminal assembly 500 includes a first terminal member 510 and a second terminal member 520 spaced apart along a first direction X. The second terminal member 520 is closer to the electromagnetic mechanism 200 than the first terminal member 510, i.e., the second terminal member 520 and the electromagnetic mechanism 200 are located on the same side of the first terminal member 510 along the first direction X. Furthermore, one end of the first terminal member 510 is connected to the static contact 320, and the other end extends outside the housing 100. One end of the second terminal member 520 is connected to the movable contact 310, and the other end extends outside the housing 100. The contact assembly 300 also includes a conductive member 330, through which the movable contact 310 is connected to the second terminal member 520. The straight section 421 and the conductive member 330 are arranged along the third direction Z, and the projections of the straight section 421 and the conductive member 330 along the second direction Y do not overlap.

[0048] It should be noted that the projection of a certain component along a certain direction mentioned in this embodiment refers to the projection of the certain component on a plane perpendicular to the direction.

[0049] It is worth mentioning that the third direction Z is perpendicular to both the first direction X and the second direction Y and is also the thickness direction of the housing 100. The static contact 320 can be integrally formed with the first terminal 510 or can be two separate components, which is not specifically limited here.

[0050] Furthermore, a plurality of first grid pieces 410 are provided, wherein an arc striking portion is provided on the first grid piece 410 adjacent to the coil assembly 220 for cooperating with the moving contact 310 to strike an arc.

[0051] That is to say, the width of the second grid 420 along the third direction Z is smaller than the width of the first grid 410, and the second grid 420 and the conductive member 330 are arranged along the third direction Z, thereby reducing the space required for the second grid 420 and the conductive member 330 in the second direction Y when they are arranged in the load switch 10, making full use of the space in the shell 100, facilitating the arrangement of the arc extinguishing assembly 400, and making the overall structure of the load switch 10 more compact and reasonable.

[0052] At least a portion of the arc-extinguishing assembly 400's projection along the second direction Y is located between the first terminal 510 and the second terminal 520, and at least another portion of the arc-extinguishing assembly 400's projection is located on a side of the second terminal 520 away from the first terminal 510. This significantly increases the space available for the arc-extinguishing assembly 400 within the load switch 10 along the first direction X. Specifically, at least a portion of the first grid 410 and / or the second grid 420 in the arc-extinguishing assembly 400 is located between the first terminal 510 and the second terminal 520, with the other end extending away from the first terminal 510. This ensures that the arc-extinguishing assembly 400 has sufficient arc striking distance. Furthermore, the arc-extinguishing assembly 400 has a longer grid belly, which increases its heat capacity. This allows the majority of the arc energy to be dissipated as the arc moves along the length of the first grid 410 and the second grid 420, thereby improving arc extinguishing effectiveness.

[0053] Furthermore, the conductive member 330 is located on the side of the moving contact 310 away from the static contact 320. In the closed state, the direction of at least part of the current in the conductive member 330 is opposite to the direction of the current in the moving contact 310. Therefore, in this case, the magnetic field generated by the conductive member 330 can act on the moving contact 310, thereby increasing the contact pressure between the moving contact 310 and the static contact 320, thereby improving the short-circuit tolerance of the load switch 10.

[0054] In order to make full use of the internal space of the shell 100, the conductive member 330 and other components are arranged compactly, and the movement space of the moving contact 310 is avoided so that the opening distance of the moving contact 310 meets the requirements. The conductive member 330 and the moving contact 310 are also staggered, that is, the conductive member 330 is located on one side of the moving contact 310 along the third direction Z, to avoid interference between the conductive member 330 and the moving contact 310 when the conductive member 330 is located on the movement path of the moving contact 310.

[0055] Specifically, the conductive member 330 includes a first section 331 and a second section 332 connected in sequence. The other end of the first section 331 is connected to the moving contact 310 so that the current direction of the first section 331 is opposite to the current direction of the moving contact 310, and the first section 331 is located on one side of the moving contact 310 along the third direction Z, which is perpendicular to both the first direction X and the second direction Y; the second section 332 is connected to the second wiring member 520, and the second section 332 and the straight section 421 are arranged along the third direction, reducing the space required for the second section 332 and the straight section 421 in the second direction Y, thereby facilitating the arrangement of more arc-extinguishing grids.

[0056] It is worth mentioning that the first section 331 and the second section 332 are hard conductors. The conductive member 330 may also include a flexible connecting wire, one end of which is connected to the end of the movable contact 310 away from the static contact 320 , and the other end is connected to the first section 331 .

[0057] Optionally, the first section 331 , the second section 332 and the second connecting member 520 may be manufactured by an integral molding process.

[0058] Furthermore, the moving contact 310 includes a moving contact portion 311, a rotating shaft 312 and a moving contact rod 314. The static contact 320 is provided with a static contact portion 321. One end of the moving contact rod 314 is provided with the moving contact portion 311, and the other end is rotatably provided on the housing 100 through the rotating shaft 312. The moving contact portion 311 is used to contact or separate from the static contact portion 321. The moving contact portion 311 and the static contact portion 321 are located between the rotating shaft 312 and the wiring assembly 500, so that the load switch circuit is shorter.

[0059] It is worth mentioning that Figure 5 As shown, the surfaces of the moving contact portion 311 and the static contact portion 321 are both provided with protrusion structures, that is, the protrusion shapes of the moving contact portion 311 and the static contact portion 321 on the cross-section of the moving contact 310 and the static contact 320 can be designed to be sawtooth-shaped or rectangular, trapezoidal, or triangular cross-sections; further, when the moving contact portion 311 contacts the static contact portion 321, the multiple protrusion structures of the moving contact portion 311 and the protrusion structures of the static contact portion 321 are in staggered contact, that is, the extension direction of the multiple protrusion structures of the moving contact portion 311 and the extension direction of the multiple protrusion structures of the static contact portion 321 are at an angle to each other, such as the two are perpendicular, so that the protrusions of the two will intersect when in contact, thereby improving the contact reliability of the contact assembly 300.

[0060] It is also worth mentioning that the moving contact 310 is located between the static contact 320 and the electromagnetic mechanism 200, that is, the static contact 320, the moving contact 310 and the electromagnetic mechanism 200 are arranged in sequence along the first direction X; one end of the moving contact 310 is fixed relative to the static contact 320 (that is, no relative movement occurs), and the other end is provided with a moving contact part 311 and approaches or moves away from the static contact 320 under the drive of the electromagnetic mechanism 200. This rotating and snapping contact can achieve an increase in the opening distance.

[0061] Furthermore, the load switch 10 includes a transmission member 600. The electromagnetic mechanism 200 includes an armature assembly 210 and a coil assembly 220. The electromagnetic mechanism 200, the armature assembly 210, and the contact assembly 300 are sequentially connected in a transmission manner along a first direction X. This results in a rational layout and a compact structure for the load switch 10. The electromagnetic mechanism 200 is used to drive the armature assembly 210 to move, thereby driving the movable contact 310 and the stationary contact 320 to close or open.

[0062] It should be noted that the axis of the coil 221 in the coil assembly 220 is along the second direction Y, and the projection of the coil 221 on the plane perpendicular to the second direction Y at least partially overlaps with the projection of the arc extinguishing assembly 400 on the plane perpendicular to the second direction Y.

[0063] Specifically, if Figure 1 、 Figure 2 and Figure 6 As shown, the armature assembly 210 is provided with a first armature 211, a second armature 212, an armature shaft 213 and a permanent magnet. The permanent magnet is arranged between the first armature 211 and the second armature 212. The first armature 211, the second armature 212 and the permanent magnet are rotatably arranged on the housing 100 as a whole through the armature shaft 213. The axial direction of the armature shaft 213 is along the third direction Z direction; the coil assembly 220 includes a coil 221 and a yoke 222 connected to the upper and lower ends of the coil 221. The first armature 211 and the second armature 212 are respectively arranged on both sides of the upper and lower yokes 222 for magnetic attraction transmission with the yoke 222. When the coil 221 is energized, the coil 221 and the yoke 222 form a series magnetic flux path to jointly drive the armature assembly 210 to move.

[0064] In this embodiment, the rotation angle of the armature assembly 210 can be reduced by reducing the distance between the first armature 211 and the second armature 212, or increasing the length of the first armature 211 and the second armature 212. For example, the rotation angle of the armature assembly 210 can be controlled within 30°.

[0065] One end of the transmission member 600 is connected to the armature assembly 210, and the other end is connected to the movable contact 310. The transmission member 600 is used to drive the movable contact rod 314, one end of which is connected to the movable contact portion 311, to rotate about the other end of which is connected to the rotating shaft 312. Therefore, when the coil 221 is energized, the yoke 222 connected to the coil 221 generates a magnetic field that drives the armature assembly 210 to rotate. This, in turn, drives the transmission member 600 through the armature assembly 210, ultimately driving the movable contact 310 toward or away from the stationary contact 320, thereby closing or opening the movable contact 310 and the stationary contact 320.

[0066] It is worth mentioning that the axial direction of the coil 221 is parallel to the second direction Y, and the length of the coil 221 is increased so that the axial length of the coil 221 along the second direction Y is at least half of the length of the housing 100, which can not only enhance the magnetic field strength but also reduce losses. Furthermore, the current direction of the moving contact 310 is parallel to the axial direction of the coil. It is worth noting that, if Figure 10 As shown, the skeleton of the coil 221 and / or the iron core arranged in the coil 221 can be circular (i.e., the cross-section is circular) or rectangular (i.e., the cross-section is rectangular), and can be adjusted according to actual conditions. When the skeleton and / or the iron core is rectangular, the space occupied by the coil can be reduced. For example, in this embodiment, when the cross-section is square, the space occupied by the coil 221 in the first direction X can be reduced.

[0067] Furthermore, the load switch 10 also includes a suction assisting member 700 , which is arranged on the housing 100 . The suction assisting member 700 is used to abut against the armature assembly 210 to store energy in the open state, so that the moving contact 310 has a movement tendency toward the static contact 320 .

[0068] In this embodiment, the suction-assisting member 700 is a spring-loaded structure. Thus, the suction-assisting member 700 applies an elastic force to the armature assembly 210 in the open state. During the closing process of the movable contact 310, the armature assembly 210 is subjected to not only the magnetic field force applied by the coil assembly 220 but also the elastic restoring force of the suction-assisting member 700. This increases the force applied by the armature assembly 210 to close the movable contact 310, ensuring that the movable contact 310 closes rapidly under the influence of the armature assembly 210, thereby increasing the closing speed. Furthermore, the suction-assisting member 700 and the movable contact 310 are arranged along the second direction Y, i.e., on the side of the movable contact 310 facing away from the wiring assembly 500. This provides sufficient space within the load switch 10 for arranging the suction-assisting member 700, preventing interference with other components and allowing the suction-assisting member 700 to work solely with the armature assembly 210 to store energy.

[0069] In detail, the armature assembly 210 is rotatably disposed on the housing 100 via the armature shaft 213 , and the suction-assisting member 700 and the transmission member 600 act on both sides of the armature assembly 210 on the armature shaft 213 , respectively.

[0070] Furthermore, the load switch 10 also includes an elastic member 800, which is arranged on the armature assembly 210 and abuts against the transmission member 600. The armature assembly 210 is provided with a waist-shaped hole 214. The waist-shaped hole 214 is located on the side of the armature shaft 213 that is away from the coil 221 of the coil assembly 220 along the first direction X direction, and is located on the side of the armature shaft 213 that is close to the arc extinguishing assembly 400 along the second direction Y to improve the transmission ratio. The transmission member 600 can be movably arranged in the waist-shaped hole 214 so that the armature assembly 210 and the transmission member 600 can rotate and move relative to each other.

[0071] Therefore, during the closing or opening process of the moving contact 310 and the static contact 320, the transmission member 600 and the armature assembly 210 will produce relative movement, so that the transmission member 600 slides along the waist-shaped hole 214 and compresses the elastic member 800, thereby providing contact pressure for the static contact 320 and the moving contact 310, and reducing the movement amplitude of the moving contact 310, the transmission member 600 and the armature assembly 210.

[0072] It should be noted that the elastic member 800 is wound around the armature assembly 210 and abuts against the armature assembly 210 at one end and abuts against the transmission member 600 at the other end. Figure 6 The bending portion 810 shown (only the structure of the bending portion 810 of the elastic member 800 is shown) is used to increase the contact points between the elastic member 800 and the transmission member 600, and the bending portion 810 of the elastic member 800 is in contact with the center position of the end of the transmission member 600 as much as possible, so that the force on the transmission member 600 is relatively stable, ensuring the stability between the transmission member 600 and the elastic member 800.

[0073] Specifically, the armature assembly 210 is further provided with a plurality of components at the overlap of the elastic member 800. Figure 9 The ribs 215 shown (only the rib 215 structure of the armature assembly 210 is shown) are used to increase the electrical clearance and creepage distance, thereby avoiding breakdown and increasing the pressure resistance of the product.

[0074] Furthermore, the moving contact 310 also includes a connecting portion 313, which is located between one end of the moving contact rod 314 connected to the moving contact portion 311 and the other end rotating around it. Specifically, a connecting portion 313 is also provided on the moving contact rod 314 and between the rotating shaft 312 and the moving contact portion 311. The transmission member 600 is connected to the connecting portion 313, and the distance between the connecting portion 313 and the moving contact portion 311 is smaller than the distance between the connecting portion 313 and the rotating shaft 312, so that a larger opening distance of the moving contact 310 can be achieved when the transmission member 600 is subjected to a smaller operating force or stroke, and the transmission ratio is higher, thereby improving the breaking speed and arc extinguishing efficiency, and also improving the operating sensitivity and response speed.

[0075] Specifically, the movable contact rod 314 and the connecting portion 313 are manufactured by an integrated molding process, that is, the connecting portion 313 is integrally molded on the movable contact rod 314, rather than being separately arranged. This not only simplifies the manufacturing process and reduces the cost, but also facilitates assembly. The connecting portion 313 is a groove structure or a through-hole structure. On the one hand, it not only makes the connection structure between the connecting portion 313 and the transmission member 600 more stable, thereby improving the movement stability of the transmission member 600 and the movable contact 310, but also facilitates the assembly of the transmission member 600 and the movable contact 310, thereby improving assembly efficiency. In addition, the structural dimensions of the transmission member 600 can also be optimized, and the space required for the movable contact rod 314 and the connecting portion 313 is reduced, so that the installation position of the transmission member 600 on the movable contact 310 is more reasonable, thereby reducing the installation distance between the transmission member 600 and the movable contact 310, thereby making the connection structure between the transmission member 600 and the movable contact 310 more compact and the layout more reasonable, and fully utilizing the limited installation space of the housing 100.

[0076] Further, if Figure 7 and Figure 8 As shown, the load switch 10 also includes a magnetic shielding member 900, which is covered and arranged on the shell 100. At least a portion of the moving contact 310 is located in the space covered by the magnetic shielding member 900. It can not only reduce the electromagnetic interference generated by the external environment on the moving contact 310, the armature assembly 210 and the coil 221, but also play a magnetizing role for the moving contact 310 to ensure that the moving contact 310 and the static contact 320 have a sufficiently large contact force in the closed state, thereby improving the stability of the contact assembly 300 and improving the short-circuit tolerance of the load switch 10.

[0077] Furthermore, at least a portion of the movable contact 310 and at least a portion of the conductive member 330 are both located in the space covered by the magnetic shield 900 , so as to increase the repulsive force between the movable contact 310 and the conductive member 330 .

[0078] It can be understood that at least a portion of the armature assembly 210 and the coil assembly 220 is also located in the space covered by the magnetic shield 900 , thereby reducing electromagnetic interference generated by the external environment on the armature assembly 210 and the coil assembly 220 .

[0079] It should be noted that the connection portion 313 is located outside the space covered by the magnetic shield 900 .

[0080] It is also worth mentioning that the length of the coil 221 along the second direction Y is greater than the length of the magnetic shielding member 900 along the second direction Y.

[0081] Furthermore, the load switch 10 also includes a magnetizing component, which is arranged on one side or both sides of the moving contact 310 along the third direction Z or on one side or both sides of the moving contact along the first direction X, so as to increase the contact pressure between the moving contact 310 and the static contact 320 through the magnetizing component.

[0082] In summary, an embodiment of the present invention provides a load switch 10. By positioning the contact assembly 300 on one side of the electromagnetic mechanism 200 along a first direction X and the arc extinguishing assembly 400 on one side of the electromagnetic mechanism 200 along a second direction Y, the overall structural layout of the load switch 10 is made more compact, thereby reducing the overall volume of the load switch and improving space utilization. Furthermore, the projection of the electromagnetic mechanism 200 on a plane perpendicular to the second direction Y at least partially overlaps with the projection of the arc extinguishing assembly 400 on a plane perpendicular to the second direction Y. This further optimizes the internal structural layout of the product, reduces unnecessary space waste, facilitates miniaturization and modularization of the product, and meets the development needs of modern electrical equipment for high integration and miniaturization. Furthermore, this arrangement ensures that the normal opening and closing operation of the contact assembly 300 under the drive of the electromagnetic mechanism 200 is not affected, and the movable contact 310 can still stably contact or separate from the static contact 320, ensuring the reliability of the circuit breaker function. Furthermore, the arc generated during the opening process can be properly guided to the arc extinguishing assembly 400 for rapid extinguishing, ensuring operational safety and improving arc extinguishing efficiency.

[0083] Furthermore, an embodiment of the present invention further provides an electric meter, comprising a meter case and a load switch 10 as in the above embodiment, wherein the load switch 10 is disposed in the meter case.

[0084] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A load switch, characterized in that: The invention comprises a housing (100), an electromagnetic mechanism (200), a contact assembly (300), and an arc extinguishing assembly (400) arranged in the housing (100), wherein the electromagnetic mechanism (200) comprises an armature assembly (210) and a coil assembly (220), and the contact assembly (300) comprises a movable contact (310) and a stationary contact (320), and the movable contact (310) is used to close or open the circuit breaker with the stationary contact (320) under the drive of the electromagnetic mechanism (200); The contact assembly (300) is located on one side of the electromagnetic mechanism (200) along a first direction (X), the arc extinguishing assembly (400) is located on one side of the electromagnetic mechanism (200) along a second direction (Y), the first direction (X) is perpendicular to the second direction (Y), and a projection of the electromagnetic mechanism (200) on a plane perpendicular to the second direction (Y) and a projection of the arc extinguishing assembly (400) on a plane perpendicular to the second direction (Y) at least partially overlap.

2. The load switch according to claim 1, characterized in that: The load switch further comprises a wiring assembly (500), at least a portion of the wiring assembly (500) is located outside the housing (100) and at least another portion is connected to the contact assembly (300), and the arc extinguishing assembly (400) is located on one side of the electromagnetic mechanism (200) along the second direction (Y) and close to the wiring assembly (500).

3. The load switch according to claim 2, characterized in that: The wiring assembly (500) comprises a first wiring member (510) and a second wiring member (520), wherein the second wiring member (520) is closer to the electromagnetic mechanism (200) relative to the first wiring member (510); At least a portion of the arc extinguishing assembly (400) projected along the second direction (Y) is located between the first wiring member (510) and the second wiring member (520), and at least another portion of the arc extinguishing assembly (400) is projected on a side of the second wiring member (520) away from the first wiring member (510).

4. The load switch according to claim 3, characterized in that: The arc extinguishing assembly (400) includes a second grid (420), one end of the first connecting piece (510) is connected to the static contact (320), and the other end extends out of the housing (100), and one end of the second connecting piece (520) is connected to the moving contact (310), and the other end extends out of the housing (100); The contact assembly (300) further comprises a conductive member (330), and the movable contact (310) is connected to the second connecting member (520) via the conductive member (330).

5. The load switch according to claim 4, characterized in that: The arc extinguishing assembly (400) further comprises at least one first grid piece (410), wherein the first grid piece (410) is located between the second grid piece (420) and the electromagnetic mechanism (200), and the length of the at least one first grid piece (410) extends along the first direction (X).

6. The load switch according to claim 4, characterized in that: The second grid (420) comprises a straight section (421) and a bent section (422) connected in sequence, the straight section (421) extends along the first direction (X), the bent section (422) is connected to the static contact (320), the straight section (421) and the conductive member (330) are arranged along a third direction (Z), and the projections of the straight section (421) and the conductive member (330) along the second direction (Y) do not overlap, and the third direction (Z) is perpendicular to both the first direction (X) and the second direction (Y).

7. The load switch according to claim 4, characterized in that: In the closed state, the conductive member (330) and the static contact (320) are arranged on both sides of the movable contact (310) along the first direction (X); in the closed state, the current direction of at least part of the conductive member (330) is opposite to the current direction of the movable contact (310).

8. The load switch according to claim 7, characterized in that: The conductive member (330) comprises a first section (331) and a second section (332) connected in sequence, the other end of the first section (331) being connected to the moving contact (310) so that the current direction of the first section (331) is opposite to the current direction of the moving contact (310), and the first section (331) is located on one side of the moving contact (310) along a third direction (Z), and the third direction (Z) is perpendicular to both the first direction (X) and the second direction (Y).

9. The load switch according to claim 8, characterized in that: The arc extinguishing assembly (400) further comprises at least one first grid piece (410), the length of the first grid piece (410) extending along the first direction (X), the second grid piece (420) comprising a straight section (421) and a bent section (422) connected in sequence, the straight section (421) being arranged parallel to the first grid piece (410), the bent section (422) being connected to the static contact (320), and the second section (332) being arranged along a third direction with the straight section (421).

10. The load switch according to claim 2, characterized in that: The contact assembly (300) further includes a rotating shaft (312), the static contact (320) is provided with a static contact portion (321), one end of the movable contact (310) is provided with a movable contact portion (311), and the other end is rotatably arranged on the housing (100) via the rotating shaft (312), the movable contact portion (311) is used to contact or separate from the static contact portion (321), and the movable contact portion (311) and the static contact portion (321) are located between the rotating shaft (312) and the wiring assembly (500).

11. The load switch according to claim 10, characterized in that: The load switch further comprises a transmission member (600), one end of the transmission member (600) being connected to the armature assembly (210), and the other end being connected to the moving contact (310), the transmission member (600) being used to drive the moving contact portion (311) of the moving contact (310) to rotate around the rotating shaft (312); The moving contact (310) is further provided with a connecting portion (313) between the rotating shaft (312) and the moving contact portion (311); the transmission member (600) is connected to the connecting portion (313); and the distance between the connecting portion (313) and the moving contact portion (311) is smaller than the distance between the connecting portion (313) and the rotating shaft (312).

12. The load switch according to any one of claims 1 to 11, characterized in that: The load switch further comprises a suction-assisting member (700), the suction-assisting member (700) being arranged on the housing (100), the suction-assisting member (700) being used for abutting against the armature assembly (210) to store energy in an open state, so that the moving contact (310) has a tendency to move toward the static contact (320), and the suction-assisting member (700) and the moving contact (310) are arranged along the second direction (Y).

13. The load switch according to claim 11, characterized in that: The load switch further comprises an elastic member (800), wherein the elastic member (800) is arranged between the armature assembly (210) and the transmission member (600), the armature assembly (210) is provided with a waist-shaped hole (214), and the transmission member (600) is movably arranged in the waist-shaped hole (214) so ​​that the armature assembly (210) and the transmission member (600) can rotate and move relative to each other.

14. The load switch according to claim 13, characterized in that: The armature assembly (210) includes an armature shaft (213), the axial direction of the armature shaft (213) is along a third direction (Z), the waist-shaped hole (214) is located on a side of the armature shaft (213) away from the coil (221) of the coil assembly (220) along the first direction (X), and is located on a side of the armature shaft (213) close to the arc extinguishing assembly (400) along the second direction (Y), and the third direction (Z) is perpendicular to both the first direction (X) and the second direction (Y).

15. The load switch according to claim 11, characterized in that: The connecting portion (313) is a groove structure or a through-hole structure. The moving contact (310) includes a moving contact rod (314). One end of the moving contact rod (314) is connected to the moving contact portion (311), and the other end is connected to the rotating shaft (312). The connecting portion (313) and the moving contact rod (314) are integrally formed.

16. The load switch according to any one of claims 1 to 11, characterized in that: The movable contact (310) is located between the static contact (320) and the electromagnetic mechanism (200); one end of the movable contact (310) is fixed relative to the static contact (320); the other end approaches or moves away from the static contact (320) under the drive of the electromagnetic mechanism (200); the axis of the coil (221) of the coil assembly (220) is along the second direction (Y), and the projection of the coil (221) on a plane perpendicular to the second direction (Y) at least partially overlaps with the projection of the arc extinguishing assembly (400) on a plane perpendicular to the second direction (Y).

17. The load switch according to any one of claims 1 to 11, characterized in that: The load switch further comprises a magnetic shielding member (900), the magnetic shielding member (900) being arranged to cover the housing (100), at least a portion of the movable contact (310) being located within a space covered by the magnetic shielding member (900), and a length of the coil (221) in the coil assembly (220) along the second direction (Y) being greater than a length of the magnetic shielding member (900) along the second direction (Y).

18. An electric meter, characterized in that: The utility model comprises a case and a load switch according to any one of claims 1 to 17 arranged in the case.

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