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

Description

Technical Field

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

[0002] As a core device in the power system for circuit connection, disconnection and protection, the working principle of a load switch is to drive a moving contact to contact or separate from a static contact through a connecting rod. With the continuous improvement of market demand and the development of technology, the traditional design of load switches has been difficult to fully meet the requirements of modern applications. In the traditional design, a moving reed is usually used as the moving contact to achieve connection and separation from the static contact.

[0003] However, with the improvement of product performance requirements, more and more load switches need to use a contact plate with a plate structure as the moving contact. This new design can better adapt to complex electrical environments and improve the load capacity and service life of the switch. However, this improvement also brings new technical problems: how to provide a connection structure that can make the layout of the load switch more reasonable, effectively integrate the moving contact plate with a plate structure into the load switch, and achieve reliable connection between the moving contact plate and other components. Summary of the Invention

[0004] The present invention provides a load switch and an electric meter, which optimize the spatial layout and make the spatial layout more reasonable.

[0005] Embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a load switch, comprising:

[0007] A housing;

[0008] An electromagnetic assembly, which is arranged in the housing;

[0009] An armature, which is movably arranged in the housing;

[0010] A moving contact, which is movably arranged in the housing;

[0011] A transmission rod, one end of which is connected to the armature and the other end is connected to the moving contact, and a part of the projection of the transmission rod on the plane where the moving path of the moving contact is located coincides with a part of the projection of the moving contact.

[0012] In an alternative embodiment, the load switch further includes a stationary contact. The moving contact includes a first wall surface, a side wall, and a second wall surface. The first wall surface faces the armature member, and the second wall surface faces away from the armature member. A moving contact portion for contacting the stationary contact is provided on the first wall surface or the second wall surface. The transmission rod is connected to the side wall or the second wall surface.

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

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

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

[0016] In an alternative embodiment, the armature member is provided with a transmission arm, and the transmission arm is provided with a first kidney-shaped hole. One end of the transmission rod is movably engaged with the first kidney-shaped hole.

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

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

[0019] In an alternative embodiment, the load switch further includes a first elastic member. The housing is provided with a rotating shaft. Along its extending direction, the moving contact is sequentially provided with a moving contact portion, a rotating portion, and an abutting portion. The rotating portion is provided with a second kidney-shaped hole, and the rotating shaft is movably engaged with the second kidney-shaped hole. The first elastic member is located on the side of the moving contact away from the transmission rod, and the first elastic member is configured to apply an elastic force to the abutting portion when the moving contact and the static contact are closed.

[0020] In an alternative embodiment, the housing is further provided with a limiting post. The limiting post is located on the side of the moving contact close to the transmission rod. The limiting post is configured to abut against the moving contact in the open state of the moving contact, so that the first elastic member is further configured to apply an elastic force to the abutting portion when the moving contact and the static contact are open.

[0021] In an alternative embodiment, the electromagnetic assembly includes a coil and a yoke connected to the coil. The axis of the coil extends along a first direction. The coil, the armature member, and the moving contact are arranged in sequence along a second direction, and the second direction is perpendicular to the first direction.

[0022] In an alternative embodiment, the electromagnetic assembly includes a coil and a yoke connected to the coil. The coil and the armature member are arranged in sequence along a first direction within the housing. The electromagnetic assembly and the moving contact are arranged in sequence along a second direction. The axis of the coil extends along the second direction, and the second direction is perpendicular to the first direction.

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

[0024] In an alternative embodiment, the load switch further includes a second lead-out member. The second lead-out member includes a fourth section, a fifth section, and a sixth section connected in sequence. The fourth section is connected to the moving contact through a flexible connection. In the closed state, the fourth section and the sixth section are respectively located on both sides of the moving contact in the thickness direction, and the current flowing directions of the fourth section and the sixth section are opposite.

[0025] In an alternative embodiment, the load switch further includes a magnetic enhancement member. The magnetic enhancement member is disposed on one or both sides of the moving contact in the thickness direction.

[0026] In a second aspect, the present invention provides an electric meter, including the load switch according to any one of the foregoing embodiments.

[0027] The beneficial effects of the load switch and the electric meter provided by the embodiments of the present invention include: the partial projection of the transmission rod on the plane where the moving contact moves coincides with the partial projection of the moving contact, that is, the transmission rod is not connected to the top wall of the moving contact facing the armature or the electromagnetic assembly, but continues to extend and is connected to other walls of the transmission rod, so that the extension length of the transmission rod relative to the moving contact is longer. In this way, the installation height of the transmission rod relative to the housing can be reduced by moving the whole transmission rod downward, thereby reducing the installation space of the transmission rod and the moving contact, thus optimizing the spatial layout of the load switch, making the spatial layout more reasonable, especially suitable for compact electrical equipment, and therefore improving the product adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 Structural schematic diagram of the first embodiment of the load switch provided by the embodiment of the present invention;

[0030] Figure 2 Partial structural schematic diagram of the first embodiment of the load switch provided by the embodiment of the present invention;

[0031] Figure 3 Structural schematic diagram of the second embodiment of the load switch provided by the embodiment of the present invention;

[0032] Figure 4 Partial structural schematic diagram of the second embodiment of the load switch provided by the embodiment of the present invention;

[0033] Figure 5 Structural schematic diagram of the third embodiment of the load switch provided by the embodiment of the present invention;

[0034] Figure 6 Structural schematic diagram of the first perspective of the fourth embodiment of the load switch provided by the embodiment of the present invention;

[0035] Figure 7 Structural schematic diagram of the second perspective of the fourth embodiment of the load switch provided by the embodiment of the present invention.

[0036] Icons: 10 - load switch; 100 - housing; 110 - limit post; 120 - rotating shaft; 200 - electromagnetic component; 210 - coil; 220 - yoke; 300 - armature part; 310 - transmission arm; 311 - first kidney-shaped hole; 320 - second elastic member; 400 - moving contact; 410 - first wall surface; 420 - side wall; 430 - second wall surface; 440 - moving contact part; 450 - rotating part; 451 - second kidney-shaped hole; 460 - connecting part; 470 - abutting part; 500 - transmission rod; 600 - static contact; 700 - first lead-out member; 710 - first section; 720 - second section; 730 - third section; 800 - first elastic member; 900 - arc extinguishing chamber; 1000 - second lead-out member; 1010 - fourth section; 1020 - fifth section; 1030 - sixth section; 1100 - magnetic enhancement member; X - first direction; Y - second direction; Z - third direction. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0041] In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0042] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0043] As a core device used in the power system for circuit connection, disconnection, and protection, the working principle of the load switch is to drive the moving contact to achieve contact or separation from the static contact through a connecting rod. With the continuous improvement of market demand and the development of technology, the traditional load switch design has been difficult to fully meet the requirements of modern applications. In the traditional design, a moving reed is usually used as the moving contact to achieve connection and separation from the static contact.

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

[0045] Based on the problems existing in the prior art, please refer to Figures 1 to 7 , an embodiment of the present invention provides a load switch 10, which is applied to related electrical equipment such as electric meters. The connection design between the transmission rod 500 and the moving contact 400 of the load switch 10 is reasonable, which can reduce its influence on the generation of electric arcs and facilitate arc extinguishing, ensuring the stable operation of the load switch 10.

[0046] Specifically, the load switch 10 includes a housing 100 and an electromagnetic assembly 200, an armature 300, a moving contact 400, and a transmission rod 500 arranged inside the housing 100.

[0047] Among them, the armature 300 and the moving contact 400 are both movably arranged in the housing 100; one end of the transmission rod 500 is connected to the armature 300, and the other end is connected to the moving contact 400. It is worth mentioning that, in order to enable the transmission rod 500 to drive the moving contact 400 to move smoothly, the transmission rod 500 and the moving contact 400 can adopt a hinged connection method.

[0048] First of all, it should be noted that during the movement process of the moving contact 400 when closing or opening the switch, the path traveled by any point on the moving contact 400 is a straight line or a curve, and the plane where the straight line and the curve are located is the plane where the movement path of the moving contact 400 is located.

[0049] Specifically, with reference to the actual installation state of the load switch 10, the plane where the movement path of the moving contact 400 is located is a vertical plane parallel to the front plate or the back plate of the housing 100.

[0050] Therefore, the partial projection of the transmission rod 500 on the plane where the moving contact 400 moves coincides with the partial projection of the moving contact 400, that is, the transmission rod 500 is not connected to the top wall of the moving contact 400 facing the armature 300 or the electromagnetic assembly 200, but continues to extend and is connected to other wall surfaces of the transmission rod 500. On the one hand, compared with the traditional connecting rod directly connected to the moving contact part 440, the connecting position of the transmission rod 500 of the present application is farther from the contact position than that of the moving contact 400, and the vertical space corresponding to the moving contact part 440 of the moving contact 400 is vacated, so as to facilitate arc ignition and thus improve the arc extinguishing ability; on the other hand, it also makes the extension length of the transmission rod 500 relative to the moving contact 400 longer, so that the installation height of the transmission rod 500 relative to the housing 100 can be reduced by moving the whole transmission rod 500 downward, thereby reducing the installation space of the transmission rod 500 and the moving contact 400, and thus optimizing the spatial layout of the load switch 10, which is especially suitable for compact electrical equipment, and also improving the product adaptability.

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

[0052] Furthermore, the load switch 10 further includes a static contact 600. As Figures 1 to 4 shown, the second wall surface 430 is provided with a moving contact part 440, and the moving contact part 440 is used for contacting or separating from the static contact 600.

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

[0054] Of course, in other embodiments of the present invention, as Figures 5 to 7 shown, the first wall surface 410 is provided with a moving contact part 440. Since the moving contact part 440 is arranged on the first wall surface 410, therefore, the static contact 600 is arranged on one side of the first wall surface 410 of the moving contact 400.

[0055] Furthermore, in some embodiments of the present invention, as Figures 1 to 5As shown, one end of the moving contact 400 is provided with a moving contact portion 440, and the other end is provided with a rotating portion 450. The rotating portion 450 is movably arranged on the housing 100 through a rotating shaft 120. The moving contact 400 is further provided with a connecting portion 460, and the connecting portion 460 is connected to the transmission rod 500. The connecting portion 460 is located between the moving contact portion 440 and the rotating portion 450 and is adjacent to the moving contact portion 440.

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

[0057] Furthermore, the armature 300 is provided with a transmission arm 310. The transmission arm 310 is provided with a first kidney-shaped hole 311. One end of the transmission rod 500 is movably matched with the first kidney-shaped hole 311. Therefore, during the process that the electromagnetic assembly 200 drives the armature 300 to move, and the armature 300 drives the transmission rod 500 to move, and finally the transmission rod 500 drives the moving contact 400 to close or open with the static contact 600, during the "overtravel" process, one end of the transmission rod 500 can slide along the extension direction of the first kidney-shaped hole 311, so as to reduce the movement amplitude of the armature 300 and the transmission rod 500.

[0058] In order to ensure that one end of the transmission rod 500 remains relatively stable in the first kidney-shaped hole 311, a second elastic member 320 is further arranged on the transmission arm 310 of the armature 300, and the second elastic member 320 acts on the transmission rod 500 in a compressed state, so as to always make the transmission rod 500 located at the bottom end of the first kidney-shaped hole 311 in the closed or open state.

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

[0060] It is worth mentioning that with the housing 100 as a reference, the first direction X is the length direction of the housing 100, and the second direction Y is the height direction of the housing 100. Therefore, the plane where the moving path of the moving contact 400 is located is the vertical plane where the first direction X and the second direction Y are located.

[0061] In this embodiment, the static contact 600 is located on one side of the moving contact 400 along the second direction Y, that is, the static contact 600 can be located on the side of the moving contact 400 close to the first wall surface 410, or can be located on the side of the moving contact 400 close to the second wall surface 430.

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

[0063] Of course, in other embodiments of the present invention, such as Figure 6 and Figure 7 As shown, a connecting portion 460 is provided at one end of the moving contact 400. The connecting portion 460 is connected to the transmission rod 500. A rotating portion 450 is provided at the other end. The rotating portion 450 is movably disposed in the housing 100. The moving contact 400 is further provided with a moving contact portion 440. The moving contact portion 440 is located between the connecting portion 460 and the rotating portion 450 and is adjacent to the connecting portion 460.

[0064] That is to say, one end of the moving contact 400 is rotatably connected to the housing 100 through the rotating portion 450, the other end is connected to the transmission rod 500 through the connecting portion 460, and the moving contact portion 440 is located between the rotating portion 450 and the connecting portion 460. This can increase the force arm of the moving contact 400, so that when the same acting force is applied to the moving contact 400 by the transmission rod 500, a greater torque is generated, thereby facilitating the driving of the moving contact 400 to contact or separate from the static contact 600, and thus improving the response speed of the moving contact 400.

[0065] Since the connecting portion 460 is provided at the end of the moving contact 400, occupying the connection space between the first lead member 700 and the static contact 600. Therefore, in this embodiment, the first lead member 700 includes a first section 710, a second section 720, and a third section 730 that are sequentially connected. The static contact 600 is connected to the first section 710. The static contact 600 and / or the second section 720 extend in the first direction X. The static contact 600, the second section 720, and the third section 730 are arranged in the second direction Y. The first section 710 and the moving contact 400 are arranged in the third direction Z. One end of the third section 730 is connected to the second section 720, and the other end extends out of the housing 100.

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

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

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

[0069] In this embodiment, with the housing 100 as a reference, the coil 210, the armature member 300, and the moving contact 400 are arranged in sequence along the height direction of the housing 100, and the coil 210 is arranged in the housing 100 in a horizontally placed manner, so that the coil 210, the armature member 300, and the moving contact 400 make full and reasonable use of the internal space of the housing 100, and the length of the housing 100 can be appropriately reduced, thereby reducing the overall volume of the housing 100, thus optimizing the spatial layout of the load switch 10, especially suitable for compact electrical equipment, and therefore improving the product adaptability.

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

[0071] In some other embodiments of the present invention, as Figures 3 to 7 shown, the coil 210 and the armature member 300 are arranged in sequence along the first direction X in the housing 100, the electromagnetic assembly 200 and the moving contact 400 are arranged in sequence along the second direction Y, and the axis of the coil 210 extends along the second direction Y.

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

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

[0074] Furthermore, in some embodiments of the present invention, as Figure 2 and Figure 3 shown, the load switch 10 further includes a first elastic member 800. The housing 100 is provided with a limiting post 110 and a rotating shaft 120. The moving contact 400 is sequentially provided with a moving contact portion 440, a rotating portion 450, and an abutting portion 470 along its extending direction. The rotating portion 450 is provided with a second kidney-shaped hole 451, and the rotating shaft 120 is movably matched with the second kidney-shaped hole 451; the limiting post 110 is located on the side of the moving contact 400 close to the transmission rod 500, the first elastic member 800 is located on the side of the moving contact 400 far from the transmission rod 500, the first elastic member 800 is used to apply an elastic force to the abutting portion 470 when the moving contact 400 is closed or opened with the static contact 600, and the limiting post 110 is used to abut against the moving contact 400 in the open state of the moving contact 400.

[0075] In this embodiment, when the moving contact 400 and the static contact 600 are in the closed state, the moving contact 400 has a tendency to rotate around the rotating shaft 120 under the elastic restoring force of the first elastic member 800. In this state, the rotating shaft 120 is located at the bottom end of the second kidney-shaped hole 451. Therefore, the moving contact portion 440 of the moving contact 400 has a tendency to move towards the static contact 600, so as to increase the contact force between the moving contact 400 and the static contact 600, and improve the operating stability of the load switch 10.

[0076] When the moving contact 400 and the static contact 600 are in the open state, the moving contact 400 has a tendency to rotate around the limiting shaft under the elastic restoring force of the first elastic member 800. In this state, the rotating shaft 120 is located at the top end of the second kidney-shaped hole 451. Therefore, if the transmission rod 500 applies a force towards the static contact 600 to the moving contact 400 at this time, the moving contact 400 can move towards the static contact 600 under the combined action of the transmission rod 500 and the first elastic member 800, so as to achieve the purpose that the moving contact 400 can be more easily closed with the static contact 600.

[0077] Further, the load switch further includes an arc extinguishing chamber 900. The arc extinguishing chamber 900 is arranged on one side of the moving contact 400 along the first direction X. The arc extinguishing chamber 900 can also be arranged on at least one side of the moving contact 400 along the third direction Z. Of course, the arc extinguishing chamber 900 can also be arranged on one side of the moving contact 400 along the first direction X and on one side of the moving contact 400 along the third direction Z at the same time.

[0078] It can be understood that the arc extinguishing chamber 900 can be arranged on one side of the moving contact 400 along the first direction X, or on one side or both sides of the moving contact 400 along the third direction Z. Of course, the arc extinguishing chamber 900 can also be arranged on one side of the moving contact 400 along the first direction X and on one side or both sides of the moving contact 400 along the third direction Z at the same time, which can be adjusted according to actual needs and will not be specifically limited here.

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

[0080] Further, the load switch further includes a second lead-out member 1000. The second lead-out member 1000 includes a fourth section 1010, a fifth section 1020 and a sixth section 1030 connected in sequence. The fourth section 1010 is connected to the moving contact 400 through a flexible connection. The fourth section 1010 and the fifth section 1020 are located on one side of the moving contact 400 along the third direction Z. The sixth section 1030 is located on one side of the moving contact 400 along the second direction Y. In the closed state, the fourth section 1010 and the sixth section 1030 are respectively located on both sides of the moving contact 400 in the thickness direction, and the current flow directions of the fourth section 1010 and the sixth section 1030 are opposite.

[0081] Specifically, in the closed state, the current direction of the fourth section 1010 is opposite to that of the moving contact 400, and the current direction of the sixth section 1030 is the same as that of the moving contact 400. In this way, when the power is on, the moving contact 400 is subjected to an electromagnetic force towards the static contact 600, so as to increase the contact force between the moving contact 400 and the static contact 600, thereby improving the short-circuit withstand capacity of the load switch.

[0082] Furthermore, in order to further improve the contact force between the moving contact 400 and the static contact 600, the load switch further includes a magnetic enhancement member 1100, and the magnetic enhancement member 1100 is arranged on one side or both sides in the thickness direction of the moving contact 400.

[0083] Specifically, the magnetic enhancement member 1100 is arranged on one side or both sides of the moving contact 400 and the sixth section 1030 along the third direction Z.

[0084] In this embodiment, by arranging the magnetic enhancement member 1100 on one side or opposite sides of the moving contact 400 and the sixth section 1030 along the third direction Z, the electromagnetic force received by the moving contact 400 towards the static contact 600 is increased through the magnetic enhancement member 1100, thereby further increasing the contact force between the moving contact 400 and the static contact 600, and further improving the short-circuit withstand capacity of the load switch.

[0085] Finally, it is also worth noting that the above-mentioned multiple embodiments can be arbitrarily arranged and combined, and are not limited to the specific embodiments shown in the drawings of the specification.

[0086] In summary, the embodiment of the present invention provides a load switch 10. The partial projection of the transmission rod 500 on the plane where the moving path of the moving contact 400 is located coincides with the partial projection of the moving contact 400, that is, the transmission rod 500 is not connected to the top wall of the moving contact 400 facing the armature 300 or the electromagnetic assembly 200, but continues to extend and is connected to other wall surfaces of the transmission rod 500. On the one hand, compared with the traditional connecting rod directly connected to the moving contact part 440, the connection position of the transmission rod 500 of the present application and the moving contact 400 is farther away from the moving contact part 440 and the static contact part, and the vertical space corresponding to the moving contact 400 at the moving contact part 440 is vacated, so as to facilitate arc ignition and thus improve the arc extinguishing ability; on the other hand, it also makes the extension length of the transmission rod 500 relative to the moving contact 400 longer, so that the installation height of the transmission rod 500 relative to the housing 100 can be reduced by lowering the whole transmission rod 500, thereby reducing the installation space of the transmission rod 500 and the moving contact 400, thus optimizing the space layout of the load switch 10, especially suitable for compact electrical equipment, and therefore improving the product adaptability.

[0087] Furthermore, the embodiment of the present invention also provides an electric meter, including the load switch 10 in the above-mentioned embodiment.

[0088] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims described above.

Claims

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

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

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

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

5. The load switch according to claim 1, characterized in that: The moving contact (400) is provided with a connecting portion (460) at one end, the connecting portion (460) being connected to the transmission rod (500), and a rotating portion (450) is provided at the other end, the rotating portion (450) being movably arranged on the housing (100), and the moving contact (400) is further provided with a moving contact portion (440), the moving contact portion (440) being located between the connecting portion (460) and the rotating portion (450) and being adjacent to the connecting portion (460).

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

7. The load switch according to claim 1, characterized in that: The load switch further comprises a connected static contact (600) and a first lead-out member (700), the first lead-out member (700) comprising a first section (710), a second section (720) and a third section (730) connected in sequence, the static contact (600) being connected to the first section (710), the static contact (600) and / or the second section (720) extending along a first direction (X), the static contact (600), the second section (720) and the third section (730) being arranged along a second direction (Y), and the first section (710) and the moving contact (400) being arranged along a third direction (Z); The first direction (X) is perpendicular to the second direction (Y), and both the first direction (X) and the second direction (Y) are perpendicular to the third direction (Z).

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

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

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

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

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

13. The load switch according to claim 1, characterized in that: The load switch further comprises a second lead-out member (1000), the second lead-out member (1000) comprising a fourth section (1010), a fifth section (1020) and a sixth section (1030) which are connected in sequence, the fourth section (1010) being connected to the moving contact (400) via a flexible connection, and in a closed state, the fourth section (1010) and the sixth section (1030) are respectively located on both sides of the moving contact (400) in a thickness direction, and the currents of the fourth section (1010) and the sixth section (1030) flow in opposite directions.

14. The load switch according to claim 1, characterized in that: The load switch further comprises a magnetizing component (1100), and the magnetizing component (1100) is arranged on one side or both sides in the thickness direction of the moving contact (400).

15. An electric meter, characterized in that: Comprising a load switch as described in any one of claims 1-14.

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