Electromagnetic system and contactor

Abstract

The utility model provides an electromagnetic system and a contactor, and belongs to the technical field of electrical equipment. The electromagnetic system comprises a coil framework, a first magnet yoke, a second magnet yoke and an armature. The coil framework comprises a third side in the first direction, a first indication structure is arranged on the third side of the coil framework, a second indication structure is arranged on the portion, close to the third side of the coil framework, of the first magnet yoke, and a third indication structure is arranged on the portion, close to the third side of the coil framework, of the second magnet yoke. The first indication structure, the second indication structure and the third indication structure are arranged in the electromagnetic system, so that the first magnet yoke and the second magnet yoke can be correctly mounted in the electromagnetic system under the condition that the mounting efficiency of the first magnet yoke and the second magnet yoke is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to an electromagnetic system and a contactor. Background Art

[0002] The contactor is an important switching device in the power mechanism, which can open and close, carry and disconnect the current in the circuit. The contactor is equipped with an electromagnetic system inside. The application of the electromagnetic system in the contactor is mainly to realize the switch control of the circuit and cut off the overload current. The electromagnetic system includes a frame, a coil, a yoke and an armature. The coil is energized to generate a magnetic field. The armature is magnetized by the magnetic field generated by the coil so that the armature moves along the through hole of the frame, thereby triggering the moving contact in the contactor to move. In the prior art, there is usually a problem that the yoke is not installed properly, thus affecting the movement of the armature in the frame, so the correct installation of the yoke is very important. Utility Model Content

[0003] The present application provides an electromagnetic system and a contactor to solve the problem in the prior art that the movement of the armature in the frame is affected by improper installation of the magnetic yoke.

[0004] In a first aspect, the present application provides an electromagnetic system, comprising: a coil frame, a first magnetic yoke, a second magnetic yoke and an armature. The coil frame is provided with a through hole, and the coil frame includes a first side and a second side that are relatively positioned in the axial direction of the through hole. The first magnetic yoke includes a first yoke plate, a second yoke plate and a third yoke plate connected in sequence, the first yoke plate is connected to the first side of the coil frame, and the third yoke plate is connected to the second side of the coil frame. The second magnetic yoke includes a fourth yoke plate, a fifth yoke plate and a sixth yoke plate connected in sequence, the fourth yoke plate is connected to the first side of the coil frame, and the sixth yoke plate is connected to the second side of the coil frame.

[0005] The first magnetic yoke includes a first opening side, the second magnetic yoke includes a second opening side, and the second opening side is arranged opposite to the first opening side. A first through hole is formed between the first yoke iron plate and the fourth yoke iron plate, a second through hole is formed between the third yoke iron plate and the sixth yoke iron plate, the first through hole, the second through hole and the through hole are interconnected, and the first through hole is closer to the moving contact assembly than the second through hole.

[0006] The armature includes a push rod, which is installed in the through hole and the first through hole. The push rod moves along the through hole and the first through hole, and pulls the moving contact assembly to move until the end of the push rod passes through the second through hole, so that the moving contact and the static contact of the contactor are closed. The first yoke and the second yoke both include a first side and a second side that are opposite to each other in the first direction, the first side of the first yoke and the second side of the first yoke are asymmetric along the axis of the first through hole and the second through hole, the first side of the second yoke and the second side of the second yoke are asymmetric along the axis of the first through hole and the second through hole, the first direction is perpendicular to the axial direction of the through hole, and the first side of the first yoke and the first side of the second yoke are on the same side.

[0007] The coil frame includes a third side in the first direction, the third side of the coil frame is provided with a first indication structure, the first magnetic yoke is provided with a second indication structure at a position close to the third side of the coil frame, and the second magnetic yoke is provided with a third indication structure at a position close to the third side of the coil frame.

[0008] Through the above arrangement, the second indication structure is arranged on the first magnetic yoke, and the third indication structure is arranged on the second magnetic yoke, so that the second indication structure corresponds to the third indication structure, and the first magnetic yoke and the second magnetic yoke can still be correctly installed when the first magnetic yoke and the second magnetic yoke are asymmetrical. The first indication structure is arranged on the coil frame to ensure that the first magnetic yoke and the second magnetic yoke are not installed reversely on the coil frame. The installation efficiency of the first magnetic yoke and the second magnetic yoke is improved, so that the armature can move normally, and the normal use of the contactor is ensured.

[0009] In a possible design, at least one of the first yoke plate and the third yoke plate is provided with a second indication structure at a location close to the third side of the coil frame. At least one of the fourth yoke plate and the sixth yoke plate is provided with a third indication structure at a location close to the third side of the coil frame.

[0010] Through the above arrangement, the second indication structure and the third indication structure are both arranged at the third side close to the coil frame, and the first indication structure arranged at the third side of the coil frame can be used to indicate the second indication structure and the third indication structure, so that the installation positions of the second indication structure and the third indication structure are clearer. The second indication structure and the third indication structure should be arranged on the same side, that is, the second indication structure and the third indication structure should be arranged opposite to each other, in order to indicate the installation of the first magnetic yoke and the second magnetic yoke, and avoid the problem of the first magnetic yoke and the second magnetic yoke being installed reversely because the second indication structure and the third indication structure are not arranged on the same side.

[0011] In a possible design, a first groove is provided at a portion of the first yoke plate close to the third side of the coil frame, and the second indication structure is configured as the first groove. And / or, a first protrusion is provided at a portion of the first yoke plate close to the third side of the coil frame, and the second indication structure is configured as the first protrusion.

[0012] Through the above arrangement, no matter the second indication structure is the first groove or the first protrusion, as long as the second indication structure is arranged on the third side of the coil skeleton, it can serve as an indication for the installation of the first magnetic yoke and the second magnetic yoke. This application does not limit the shape, style, material, etc. of the second indication structure and the third indication structure, as long as the second indication structure and the third indication structure can serve as an indication for the installation of the first magnetic yoke and the second magnetic yoke.

[0013] In a possible design, a plug is provided on the first yoke plate near the third side of the coil frame and facing the fourth yoke plate, and a slot is provided on the fourth yoke plate near the third side of the coil frame and facing the first yoke plate, and the plug fits in the slot. The second indication structure is configured as the plug, and the third indication structure is configured as the slot.

[0014] Through the above-mentioned arrangement, by utilizing the combination of the insertion strip and the slot, the operator can more conveniently install the first yoke and the second yoke. When the insertion strip abuts against the fourth yoke iron plate, the operator can immediately discover that the position of the first yoke and the second yoke are incorrectly docked. At this time, the operator can adjust the first yoke and the second yoke to the correct installation position for installation.

[0015] In a possible design, the electromagnetic system further includes a coil, a first terminal piece, and a second terminal piece. The coil frame includes a first support plate, a support column, and a second support plate, wherein the first support plate and the second support plate are oppositely disposed and spaced apart, the support column connects the first support plate and the second support plate, the first yoke plate is connected to a side of the first support plate facing away from the support column, and the third yoke plate is connected to a side of the second support plate facing away from the support column.

[0016] The through hole sequentially penetrates the first support plate, the support column and the second support plate. The coil is wound on the support column, the coil includes an inlet terminal and an outlet terminal, the first terminal block is installed on one side of the first support plate, the second terminal block is installed on the other side of the first support plate, and the first terminal block and the second terminal block are both arranged on the third side of the coil frame. The inlet terminal is connected to the first terminal block, and the outlet terminal is connected to the second terminal block. The first indication structure is configured as the first terminal block and the second terminal block.

[0017] Through the above-mentioned arrangement, the first terminal piece and the second terminal piece are set as the first indication structure, which improves the installation accuracy of the first magnetic yoke and the second magnetic yoke. With the cooperation of the second indication structure and the third indication structure, it is ensured that the first magnetic yoke and the second magnetic yoke will not be installed reversely, thereby ensuring the operating reliability of the contactor.

[0018] In a possible design, the electromagnetic system further includes a transient voltage suppression diode, a first wire and a second wire, the first end of the transient voltage suppression diode is electrically connected to one end of the first wire, the other end of the first wire is connected to the incoming line terminal, the second end of the transient voltage suppression diode is electrically connected to one end of the second wire, the other end of the second wire is electrically connected to the outgoing line terminal, the transient voltage suppression diode is installed on the third side of the coil skeleton, and the transient voltage suppression diode is used to absorb the reverse voltage generated when the coil is disconnected. The first indication structure is also configured as a transient voltage suppression diode.

[0019] Through the above arrangement, when the coil is disconnected, the transient overvoltage generated will be absorbed by the transient voltage suppression diode, ensuring that the equipment equipped with the contactor of this electromagnetic system will not be damaged by the transient overvoltage generated by the electromagnetic system. And using the transient voltage suppression diode as the first indication structure at the same time can not only ensure that the indication effect of the first indication structure is clearer, but also enable the transient voltage suppression diode to achieve the effect of multiplexing, thereby ensuring that the first magnetic yoke and the second magnetic yoke will not be installed reversely, while ensuring the installation efficiency of the electromagnetic system, it also ensures that the first magnetic yoke and the second magnetic yoke will not affect the movement of the armature.

[0020] In a possible design, the electromagnetic system further includes a first insulating sleeve and a second insulating sleeve. The first insulating sleeve is sleeved on the first conductor, and the second insulating sleeve is sleeved on the second conductor.

[0021] Through the above arrangement, a first insulating sleeve is sleeved on the first wire, and a second insulating sleeve is sleeved on the second wire, which can protect the first wire, the second wire and the electromagnetic system, avoid the occurrence of a short circuit problem caused by the lack of insulation protection between the first wire and the second wire, and ensure the reliability of the contactor.

[0022] In a possible design, the armature also includes a first limit plate and a second limit plate, the first limit plate and the second limit plate are spaced apart, the push rod is fixedly connected to the first limit plate and the second limit plate, the first limit plate is located on the side of the first yoke plate and the fourth yoke plate facing away from the first support plate, and the second limit plate is located on the side of the third yoke plate and the sixth yoke plate facing the second support plate.

[0023] Through the above-mentioned arrangement, the first limit plate and the second limit plate are arranged, and the push rod is arranged between the first limit plate and the second limit plate, which can prevent the push rod from falling off from the coil frame, and the arrangement of the first limit plate and the second limit plate can increase the area where the armature is magnetized, thereby increasing the attraction of the first magnetic yoke and the second magnetic yoke to the armature, ensuring that the contactor can be attracted more smoothly and improving the operating stability of the contactor.

[0024] In a possible design, the electromagnetic system also includes a magnetic isolation plate, which is arranged between the second limiting plate and the third yoke plate, and between the second limiting plate and the sixth yoke plate. The magnetic isolation plate is movably connected to the coil frame and has a through hole.

[0025] Through the above-mentioned setting, a magnetic isolation sheet is provided between the second limit plate and the third yoke plate, and between the second limit plate and the sixth yoke plate, and the second limit plate can be separated from the third yoke plate and the sixth yoke plate by the magnetic isolation sheet, so as to avoid the second limit plate and the third yoke plate and the second limit plate and the sixth yoke plate being magnetized due to long-term contact, thereby causing the second limit plate to be difficult to separate from the third yoke plate and the second limit plate to be difficult to separate from the sixth yoke plate, thereby ensuring the operational reliability of the electromagnetic system. A through hole is provided on the magnetic isolation sheet, so that the end of the push rod can pass through the through hole to smoothly extend out of the second through hole and enable the first limit plate to drive the moving contact assembly, so that the moving contact and the static contact of the contactor are closed, thereby avoiding the problem of hindering the movement of the armature due to the provision of the magnetic isolation sheet.

[0026] In a second aspect, the present application provides a contactor, comprising: a housing, a moving contact, and the electromagnetic system of the first aspect. The moving contact assembly and the electromagnetic system are both installed in the housing.

[0027] Through the above arrangement, the present application sets an electromagnetic system in the contactor. By setting the first indication structure, the second indication structure and the third indication structure in the electromagnetic system, it is ensured that the first magnetic yoke and the second magnetic yoke can be correctly and quickly installed during the installation process, and while ensuring the installation efficiency of the first magnetic yoke and the second magnetic yoke, it is also ensured that the first magnetic yoke and the second magnetic yoke can be correctly installed in the electromagnetic system, and it is ensured that during the process of the contactor breaking the current, the first magnetic yoke and the second magnetic yoke will not block the movement of the armature, thereby improving the reliability of the contactor.

[0028] The beneficial effects provided in the above-mentioned second aspect and various possible designs of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of an electromagnetic system provided in an embodiment of the present application.

[0030] Figure 2 An exploded view of an electromagnetic system provided in an embodiment of the present application.

[0031] Figure 3 A schematic structural diagram of the first magnetic yoke provided in an embodiment of the present application.

[0032] Figure 4 This is a schematic structural diagram of the second magnetic yoke provided in an embodiment of the present application.

[0033] Figure 5 A schematic diagram of the assembly of the first magnetic yoke and the second magnetic yoke provided in an embodiment of the present application.

[0034] Figure 6 A partial structural schematic diagram of an electromagnetic system provided in an embodiment of the present application.

[0035] Figure 7 A schematic diagram of the structure of the armature provided in an embodiment of the present application.

[0036] Description of reference numerals:

[0037] 100, coil frame; 110, first support plate; 120, support column; 130, second support plate; 140, coil; 150, first wire; 151, first insulating sleeve; 160, second wire; 161, second insulating sleeve;

[0038] 200, a first magnetic yoke; 210, a first yoke iron plate; 220, a second yoke iron plate; 230, a third yoke iron plate;

[0039] 300, second magnetic yoke; 310, fourth yoke iron plate; 320, fifth yoke iron plate; 330, sixth yoke iron plate;

[0040] 400, armature; 410, push rod; 420, first limit plate; 430, second limit plate;

[0041] 500, first indication structure; 510, first wiring piece; 520, second wiring piece; 530, transient voltage suppression diode;

[0042] 600, second indication structure; 610, first groove;

[0043] 700, third indication structure;

[0044] 800, magnetic isolation sheet;

[0045] OZ, first direction. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0048] The terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0049] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] The directional words appearing in the following description are all directions shown in the drawings, and do not limit a specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0052] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0053] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below.

[0055] The contactor is an important switchgear in the power mechanism, which can open and close, carry and disconnect the current in the circuit. The contactor is equipped with an electromagnetic system inside. The application of the electromagnetic system in the contactor is mainly to realize the switch control of the circuit and cut off the overload current. The coil of the contactor is energized, and the energized coil generates a magnetic field to magnetize the armature. The magnetized armature moves toward the first yoke and the second yoke and drives the moving contact and the static contact to close, so that the contactor can quickly connect the current. When the coil of the contactor loses power, the moving contact and the static contact are quickly disconnected under the action of the spring force, thereby cutting off the power supply.

[0056] It can be seen that the movement of the armature can drive the moving contact and the stationary contact to close to turn on the power, or the movement of the armature can drive the moving contact and the stationary contact to separate to cut off the power. However, in the prior art, the first yoke and the second yoke are usually not installed properly, which blocks the normal movement of the armature, thereby preventing the armature from effectively driving the moving contact assembly. Therefore, the correct installation of the yoke is very important.

[0057] The present application sets an electromagnetic system in the contactor. By setting the first indication structure, the second indication structure and the third indication structure in the electromagnetic system, it is ensured that the first magnetic yoke and the second magnetic yoke can be installed correctly and quickly during the installation process, and the installation efficiency of the first magnetic yoke and the second magnetic yoke is ensured. At the same time, it is ensured that the first magnetic yoke and the second magnetic yoke can be correctly installed in the electromagnetic system, and it is ensured that the first magnetic yoke and the second magnetic yoke will not block the movement of the armature during the process of connecting or disconnecting the power supply of the contactor, thereby ensuring the normal use of the contactor.

[0058] The electromagnetic system in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0059] Figure 1 A schematic diagram of the structure of an electromagnetic system provided in an embodiment of the present application. Figure 2 An exploded view of an electromagnetic system provided in an embodiment of the present application.

[0060] The present application provides an electromagnetic system, which is applied to a contactor. Figure 1 and Figure 2 As shown, the electromagnetic system includes: a coil frame 100, a first magnetic yoke 200, a second magnetic yoke 300 and an armature 400. The coil frame 100 is provided with a through hole, and the coil frame 100 includes a first side and a second side opposite to each other in the axial direction of the through hole.

[0061] The first magnetic yoke 200 includes a first yoke plate 210, a second yoke plate 220, and a third yoke plate 230 connected in sequence, wherein the first yoke plate 210 is connected to a first side of the coil frame 100, and the third yoke plate 230 is connected to a second side of the coil frame 100. The second magnetic yoke 300 includes a fourth yoke plate 310, a fifth yoke plate 320, and a sixth yoke plate 330 connected in sequence, wherein the fourth yoke plate 310 is connected to a first side of the coil frame 100, and the sixth yoke plate 330 is connected to a second side of the coil frame 100.

[0062] The first magnetic yoke 200 includes a first opening side, and the second magnetic yoke 300 includes a second opening side, and the second opening side is arranged opposite to the first opening side. A first through hole is formed between the first yoke iron plate 210 and the fourth yoke iron plate 310, and a second through hole is formed between the third yoke iron plate 230 and the sixth yoke iron plate 330. The first through hole, the second through hole and the through hole are interconnected, and the first through hole is closer to the moving contact than the second through hole.

[0063] The armature 400 includes a push rod 410, which is installed in the through hole and the first through hole. The push rod 410 moves along the through hole and the first through hole, and pulls the moving contact assembly to move until the end of the push rod 410 passes through the second through hole, so that the moving contact and the static contact of the contactor are closed. The first yoke 200 and the second yoke 300 both include a first side and a second side that are opposite to each other in the first direction OZ, the first side of the first yoke 200 and the second side of the first yoke 200 are asymmetric along the axis of the first through hole and the second through hole, the first side of the second yoke 300 and the second side of the second yoke 300 are asymmetric along the axis of the first through hole and the second through hole, the first direction OZ is perpendicular to the axial direction of the through hole, and the first side of the first yoke 200 and the first side of the second yoke 300 are located on the same side.

[0064] The coil skeleton 100 includes a third side in the first direction OZ, a first indication structure 500 is provided on the third side of the coil skeleton 100 , a second indication structure 600 is provided on the first magnetic yoke 200 near the third side of the coil skeleton 100 , and a third indication structure 700 is provided on the second magnetic yoke 300 near the third side of the coil skeleton 100 .

[0065] The coil frame 100 is an important component in the electromagnetic system, and the coil frame 100 can support the coil 140. Since the coil frame 100 has good strength and stability, the coil frame 100 can usually be used as a carrier of other components in the electromagnetic system.

[0066] The through hole of the coil frame 100 is used to install the armature 400 .

[0067] The first yoke plate 210 and the third yoke plate 230 are both arranged perpendicular to the second yoke plate 220 , and the first yoke plate 210 , the second yoke plate 220 and the third yoke plate 230 are sequentially connected to form a U-shaped structure. The opening of the U-shaped structure is the first opening side of the first magnetic yoke 200 .

[0068] Similarly, the fourth yoke plate 310 and the sixth yoke plate 330 are both arranged perpendicular to the fifth yoke plate 320, and the fourth yoke plate 310, the fifth yoke plate 320 and the sixth yoke plate 330 are sequentially connected to form a U-shaped structure. The opening of the U-shaped structure is the second opening side of the second magnetic yoke 300.

[0069] The first opening side and the second opening side are arranged opposite to each other, so that the first magnetic yoke 200 and the second magnetic yoke 300 can form a "mouth"-shaped structure after being installed on the coil frame 100.

[0070] A semicircular slot is provided on the side of the first yoke plate 210 facing the fourth yoke plate 310 and a semicircular slot is provided on the side of the fourth yoke plate 310 facing the first yoke plate 210, and a first through hole can be formed between the two semicircular slots. Similarly, a semicircular slot is provided on the side of the third yoke plate 230 facing the sixth yoke plate 330 and a semicircular slot is provided on the side of the sixth yoke plate 330 facing the third yoke plate 230, and a second through hole can be formed between the two semicircular slots.

[0071] After the coil 140 is energized to generate a magnetic field, the push rod 410, the first limit plate 420 and the second limit plate 430 are magnetized, so that the second limit plate 430 moves toward the third yoke plate 230 and the sixth yoke plate 330. At this time, the moving contact assembly assembled on the first limit plate 420 moves accordingly and closes with the static contact.

[0072] The end of the armature 400 away from the moving contact assembly contacts the reaction spring. When the second limit plate 430 moves toward the third yoke iron plate 230 and the sixth yoke iron plate 330, the pressure of the reaction spring is overcome first, and then the spring pressure of the moving contact and the static contact is overcome after the moving contact and the static contact are closed. At the same time, since the first indication structure 500 needs to be set on one side of the coil skeleton 100, the width of the side of the first magnetic yoke 200 close to the first indication structure 500 and the side of the second magnetic yoke 300 close to the first indication structure 500 is smaller than the width of the side of the first magnetic yoke 200 away from the first indication structure 500 and the side of the second magnetic yoke 300 away from the first indication structure 500. In this way, when the first magnetic yoke 200 and the second magnetic yoke 300 are installed, the side of the first magnetic yoke 200 and the second magnetic yoke 300 close to the first indication structure 500 will not conflict with the first indication structure 500.

[0073] The first direction OZ is perpendicular to the axial direction of the through hole, and the first direction OZ is perpendicular to the arrangement direction of the first opening side and the second opening side.

[0074] In summary, the second indication structure 600 is provided on the first magnetic yoke 200, and the third indication structure 700 is provided on the second magnetic yoke 300, so that the second indication structure 600 corresponds to the third indication structure 700, which can ensure that the first magnetic yoke 200 and the second magnetic yoke 300 can still be correctly installed when the first magnetic yoke 200 and the second magnetic yoke 300 are asymmetrical. The first indication structure 500 is provided on the coil frame 100, which ensures that the first magnetic yoke 200 and the second magnetic yoke 300 will not be installed reversely on the coil frame 100. The installation efficiency of the first magnetic yoke 200 and the second magnetic yoke 300 is ensured, and the armature 400 can move normally, which ensures the normal use of the contactor.

[0075] In a possible design, at least one of the first yoke plate 210 and the third yoke plate 230 is provided with a second indication structure 600 near the third side of the coil frame 100 . At least one of the fourth yoke plate 310 and the sixth yoke plate 330 is provided with a third indication structure 700 near the third side of the coil frame 100 .

[0076] For example, when the second indication structure 600 is provided on the third side of the first yoke plate 210 close to the coil frame 100 , the third indication structure 700 can also be provided on the fourth yoke plate 310 on the same side as the first yoke plate 210 close to the third side of the coil frame 100 .

[0077] Similarly, when a second indication structure 600 is provided on the third yoke plate 230 near the third side of the coil frame 100 , a third indication structure 700 should also be provided on the sixth yoke plate 330 located on the same side as the third yoke plate 230 near the third side of the coil frame 100 .

[0078] In summary, the second indication structure 600 and the third indication structure 700 should be arranged on the same side, that is, the second indication structure 600 and the third indication structure 700 should be arranged opposite to each other, in order to indicate the installation of the first magnetic yoke 200 and the second magnetic yoke 300, thereby avoiding the problem of the first magnetic yoke 200 and the second magnetic yoke 300 being installed reversely due to the second indication structure 600 and the third indication structure 700 being arranged on different sides.

[0079] It should be noted that the present application does not limit the specific setting positions of the second indication structure 600 and the third indication structure 700. As long as they can serve as an indicator for the installation of the first magnetic yoke 200 and the second magnetic yoke 300, the second indication structure 600 and the third indication structure 700 can be set at appropriate locations according to actual usage.

[0080] Figure 3 A schematic structural diagram of the first magnetic yoke provided in an embodiment of the present application. Figure 4 This is a schematic structural diagram of the second magnetic yoke provided in an embodiment of the present application. Figure 5 A schematic diagram of the assembly of the first magnetic yoke and the second magnetic yoke provided in an embodiment of the present application.

[0081] In one possible design, Figures 3 to 5 As shown, the first yoke plate 210 is provided with a first groove 610 at a position close to the third side of the coil frame 100, and the second indication structure 600 is configured as the first groove 610. And / or, the first yoke plate 210 is provided with a first protrusion at a position close to the third side of the coil frame 100, and the second indication structure 600 is configured as the first protrusion.

[0082] The second indication structure 600 may be the first groove 610 , or the second indication structure 600 may be a first protrusion.

[0083] In summary, no matter the second indication structure 600 is the first groove or the first protrusion, as long as the second indication structure 600 is disposed on the third side of the coil skeleton 100 , it can indicate the installation of the first magnetic yoke 200 and the second magnetic yoke 300 .

[0084] In addition, the second indication structure 600 can also be an arrow mark, etc., and the corresponding third indication structure 700 can also be an arrow mark, etc. Exemplarily, when the second indication structure 600 is in a groove shape, the third indication structure 700 is in a groove shape. When the second indication structure 600 is in a convex shape, the third indication structure 700 is in a convex shape. When the second indication structure 600 is an arrow mark pointing to the second magnetic yoke 300, the third indication structure 700 is an arrow mark pointing to the first magnetic yoke 200. This application does not limit the shape, style, material, etc. of the second indication structure 600 and the third indication structure 700, as long as the second indication structure 600 and the third indication structure 700 can play an indicating role in the installation of the first magnetic yoke 200 and the second magnetic yoke 300.

[0085] In another possible design, the first yoke plate 210 is provided with an insert on the third side of the coil frame 100 and facing the fourth yoke plate 310, and the fourth yoke plate 310 is provided with a slot on the third side of the coil frame 100 and facing the first yoke plate 210, and the insert fits in the slot. The second indication structure 600 is configured as an insert, and the third indication structure 700 is configured as a slot.

[0086] The insertion strip is a protrusion structure provided on the third side of the first yoke plate 210 close to the coil frame 100 and facing the fourth yoke plate 310. The slot is a groove structure matching the protrusion structure provided on the third side of the fourth yoke plate 310 close to the coil frame 100 and facing the first yoke plate 210.

[0087] Since the first magnetic yoke 200 and the second magnetic yoke 300 can be correctly installed when the insert bar is inserted into the slot, and the first magnetic yoke 200 and the second magnetic yoke 300 cannot be normally installed when the insert bar cannot be inserted into the slot and abuts against the second magnetic yoke 300, whether the insert bar can be inserted into the slot can serve as a reference for whether the first magnetic yoke 200 and the second magnetic yoke 300 can be correctly installed. In the case where the insert bar cannot be inserted into the slot, it can serve as a good reminder so that the operator can adjust the orientation of the first magnetic yoke 200 or the second magnetic yoke 300 in time, and quickly realize the accurate installation of the first magnetic yoke 200 and the second magnetic yoke 300.

[0088] Through the above-mentioned arrangement, by utilizing the combination of the insertion strip and the slot, the operator can more conveniently install the first yoke 200 and the second yoke 300. When the insertion strip abuts against the fourth yoke iron plate 310, the operator can immediately discover that the first yoke 200 and the second yoke 300 are incorrectly docked. At this time, the operator can adjust the first yoke 200 and the second yoke 300 to the correct installation position for installation.

[0089] Figure 6 A partial structural schematic diagram of an electromagnetic system provided in an embodiment of the present application.

[0090] like Figure 1 , Figure 2 as well as Figure 6 As shown, the electromagnetic system further includes a coil 140, a first terminal piece 510 and a second terminal piece 520. The coil frame 100 includes a first support plate 110, a support column 120 and a second support plate 130. The first support plate 110 and the second support plate 130 are arranged oppositely and spaced apart. The support column 120 connects the first support plate 110 and the second support plate 130. The first yoke plate 210 is connected to the side of the first support plate 110 facing away from the support column 120, and the third yoke plate 230 is connected to the side of the second support plate 130 facing away from the support column 120. The through hole sequentially penetrates the first support plate 110, the support column 120 and the second support plate 130.

[0091] The coil 140 is wound around the support column 120, and the coil 140 includes an inlet terminal and an outlet terminal, a first terminal 510 is installed on one side of the first support plate 110, and a second terminal 520 is installed on the other side of the first support plate 110, and the first terminal 510 and the second terminal 520 are both arranged on the third side of the coil frame 100. The inlet terminal is connected to the first terminal 510, and the outlet terminal is connected to the second terminal 520. The first indication structure 500 is configured as the first terminal 510 and the second terminal 520.

[0092] A first mounting groove is provided on the side of the first support plate 110 facing away from the support column 120, and the first yoke plate 210 and the fourth yoke plate 310 are both installed in the first mounting groove. A plurality of slots are provided in the first mounting groove, and a plurality of blocks are provided on the first yoke plate 210 and the fourth yoke plate 310 to match the slots in the first mounting groove. When the first magnetic yoke 200 and the second magnetic yoke 300 are installed, the blocks on the first yoke plate 210 and the fourth yoke plate 310 are connected to the slots of the first mounting groove, so that the first yoke plate 210 and the fourth yoke plate 310 can be installed and fixed on the first support plate 110.

[0093] A second mounting groove is provided on the side of the second support plate 130 facing away from the support column 120, and the third yoke plate 230 and the sixth yoke plate 330 are both installed in the second mounting groove. A plurality of card slots are provided in the second mounting groove, and a plurality of card blocks that match the card slots in the second mounting groove are provided on the third yoke plate 230 and the sixth yoke plate 330. When the third yoke plate 230 and the sixth yoke plate 330 are installed, the card blocks on the third yoke plate 230 and the sixth yoke plate 330 are carded in the card slots of the second mounting groove, so that the third yoke plate 230 and the sixth yoke plate 330 can be installed and fixed on the second support plate 130.

[0094] The first magnetic yoke 200 and the second magnetic yoke 300 can be installed on the coil frame 100 by using the installation grooves provided on the first support plate 110 and the second support plate 130. By providing a plurality of card slots in the first installation groove and the second installation groove, and providing a plurality of matching card blocks on the first magnetic yoke 200 and the second magnetic yoke 300, it can be ensured that the first magnetic yoke 200 and the second magnetic yoke 300 can be firmly installed on the coil frame 100, thereby avoiding the problem that the first magnetic yoke 200 and the second magnetic yoke 300 fall off due to the shaking of the electromagnetic system, thereby causing the electromagnetic system to be unusable.

[0095] It should be noted that the coil frame 100 is made of plastic, so the first mounting groove and the second mounting groove may have a certain degree of deformation to meet the clamping conditions with the first magnetic yoke 200 and the second magnetic yoke 300 .

[0096] The first terminal piece 510 and the second terminal piece 520 are both metal clips. The inlet end of the coil 140 is welded to the first terminal piece 510, and the outlet end of the coil 140 is welded to the second terminal piece 520. The first terminal piece 510 is connected to one end of the DC power supply through the connection structure, and then the second terminal piece 520 is connected to the other end of the DC power supply through the connection structure, so that the circuit connection of the electromagnetic system of the contactor can be completed.

[0097] Through the above configuration, the first connecting piece 510 and the second connecting piece 520 are set as the first indication structure 500, and when the first magnetic yoke 200 and the second magnetic yoke 300 are installed on the coil frame 100, the first connecting piece 510 and the second connecting piece 520 can be used as reference objects. As long as the side of the first magnetic yoke 200 provided with the second indication structure 600 and the side of the second magnetic yoke 300 provided with the third indication structure 700 are both located on the same side as the side of the coil frame 100 on which the first connecting piece 510 and the second connecting piece 520 are installed, the first magnetic yoke 200 and the second magnetic yoke 300 can be quickly and accurately installed on the coil frame 100. In addition, the first connecting piece 510 and the second connecting piece 520 have the function of serving as the first indication structure 500 in addition to the original connection function, so that the first connecting piece 510 and the second connecting piece 520 can achieve the effect of multiplexing.

[0098] Please continue to refer to Figure 1 as well as Figure 6 As shown, the electromagnetic system further includes a transient voltage suppression diode 530, a first wire 150 and a second wire 160, a first end of the transient voltage suppression diode 530 is electrically connected to one end of the first wire 150, the other end of the first wire 150 is electrically connected to the incoming line terminal, a second end of the transient voltage suppression diode 530 is electrically connected to one end of the second wire 160, the other end of the second wire 160 is electrically connected to the outgoing line terminal, and the transient voltage suppression diode 530 is installed on the third side of the coil skeleton 100, and the transient voltage suppression diode 530 is used to absorb the reverse voltage generated when the coil 140 is disconnected. The first indication structure 500 is also configured as a transient voltage suppression diode 530.

[0099] The transient voltage suppression diode 530 is a device used to protect electronic circuits from voltage fluctuations or transient overvoltage damage. The transient voltage suppression diode 530 is used to absorb the reverse voltage generated when the coil 140 is disconnected, so that the equipment equipped with the contactor of this electromagnetic system will not be damaged by the transient overvoltage generated by the electromagnetic system. A card slot is provided on the third side of the coil frame 100, and the transient voltage suppression diode 530 is arranged in the card slot.

[0100] Through the above arrangement, when the coil 140 is disconnected, the generated overvoltage will be absorbed by the transient voltage suppression diode 530, which can ensure the operating stability of the electromagnetic system, and the transient voltage suppression diode 530 is also used as the first indication structure 500, which not only ensures that the indication effect of the first indication structure 500 is clearer, but also enables the transient voltage suppression diode 530 to achieve a reuse effect, thereby ensuring that the first magnetic yoke 200 and the second magnetic yoke 300 will not be installed reversely, while ensuring the installation efficiency of the electromagnetic system, it also ensures that the first magnetic yoke 200 and the second magnetic yoke 300 will not affect the movement of the armature 400.

[0101] In a possible design, the electromagnetic system further includes a first insulating sleeve 151 and a second insulating sleeve 161. The first insulating sleeve 151 is sleeved on the first wire 150, and the second insulating sleeve 161 is sleeved on the second wire 160.

[0102] The first insulating sleeve 151 and the second insulating sleeve 161 can be PVC insulating sleeves, heat shrinkable insulating sleeves, silicone insulating sleeves, polyethylene insulating sleeves, polyester insulating sleeves, etc. The present application does not limit the materials of the first insulating sleeve 151 and the second insulating sleeve 161.

[0103] Through the above configuration, a first insulating sleeve 151 is sleeved on the first wire 150, and a second insulating sleeve 161 is sleeved on the second wire 160, which can protect the first wire 150, the second wire 160 and the electromagnetic system, avoid the occurrence of a short circuit problem caused by the lack of insulation protection between the first wire 150 and the second wire 160, and ensure the reliability of the contactor.

[0104] Figure 7 A schematic diagram of the structure of the armature provided in an embodiment of the present application.

[0105] like Figure 7 As shown, the armature 400 also includes a first limit plate 420 and a second limit plate 430, the first limit plate 420 and the second limit plate 430 are spaced apart, the push rod 410 is fixedly connected to the first limit plate 420 and the second limit plate 430, the first limit plate 420 is located on the side of the first yoke plate 210 and the fourth yoke plate 310 facing away from the first support plate 110, and the second limit plate 430 is located on the side of the third yoke plate 230 and the sixth yoke plate 330 facing the second support plate 130.

[0106] When the coil 140 is energized, a magnetic field is generated, which magnetizes the push rod 410, the first limit plate 420 and the second limit plate 430, so that the second limit plate 430 moves toward the third yoke plate 230 and the sixth yoke plate 330. At this time, the moving contact assembly assembled on the first limit plate 420 moves accordingly and closes with the static contact.

[0107] Through the above-mentioned setting, the first limit plate 420 and the second limit plate 430 are set, and the push rod 410 is set between the first limit plate 420 and the second limit plate 430, which can avoid the problem of the push rod 410 falling off from the coil frame 100, and the setting of the first limit plate 420 and the second limit plate 430 can increase the magnetized area of ​​the armature 400, thereby increasing the attraction of the first magnetic yoke 200 and the second magnetic yoke 300 to the armature 400, ensuring that the contactor can be attracted more smoothly, thereby improving the operating stability of the contactor.

[0108] Please continue to refer to Figure 7 The electromagnetic system also includes a magnetic isolation sheet 800, which is disposed between the second limiting plate 430 and the third yoke plate 230, and between the second limiting plate 430 and the sixth yoke plate 330. The magnetic isolation sheet 800 is movably connected to the coil frame 100, and a through hole is provided on the magnetic isolation sheet 800.

[0109] The size of the magnetic isolation sheet 800 is substantially the same as that of the second limit plate 430. A slot is provided on the magnetic isolation sheet 800. A clip bar that matches the slot provided on the magnetic isolation sheet 800 is provided in the coil frame 100. The clip bar extends into the slot and can move relative to the slot. The magnetic isolation sheet 800 is clipped with the clip bar provided on the coil frame 100 through the slot, and the magnetic isolation sheet 800 is movably connected to the coil frame 100. The clip bar and the slot can ensure that the magnetic isolation sheet 800 will not fall off the coil frame 100 while moving with the armature 400.

[0110] Through the above arrangement, the magnetic isolation plate 800 is arranged between the second limit plate 430 and the third yoke plate 230, and between the second limit plate 430 and the sixth yoke plate 330, which can ensure that there is no direct contact between the second limit plate 430 and the third yoke plate 230, and between the second limit plate 430 and the sixth yoke plate 330, thereby avoiding the problem that the second limit plate 430 is difficult to separate from the third yoke plate 230 and the second limit plate 430 is difficult to separate from the sixth yoke plate 330 due to long-term contact between the second limit plate 430 and the third yoke plate 230 and the second limit plate 430 and the sixth yoke plate 330, thereby ensuring the operating reliability of the electromagnetic system. The magnetic isolation plate 800 is provided with a through hole, which can facilitate the end of the push rod 410 to pass through the through hole, so as to smoothly extend out of the second through hole and enable the first limit plate 420 to drive the moving contact assembly, thereby avoiding the problem that the armature 400 is hindered from moving due to the provision of the magnetic isolation plate 800.

[0111] It should be noted that the electromagnetic system provided in this application can also be used in relays.

Claims

1. An electromagnetic system, applied to a contactor, the contactor comprising a moving contact assembly, characterized in that: The electromagnetic system comprises: The coil frame is provided with a through hole, and the coil frame includes a first side and a second side which are opposite to each other in the axial direction of the through hole; A first magnetic yoke comprises a first yoke plate, a second yoke plate and a third yoke plate connected in sequence, wherein the first yoke plate is connected to a first side of the coil frame, and the third yoke plate is connected to a second side of the coil frame; The second magnetic yoke comprises a fourth yoke plate, a fifth yoke plate and a sixth yoke plate which are connected in sequence, wherein the fourth yoke plate is connected to the first side of the coil frame, and the sixth yoke plate is connected to the second side of the coil frame; The first magnetic yoke includes a first opening side, the second magnetic yoke includes a second opening side, and the second opening side is arranged opposite to the first opening side; a first through hole is formed between the first yoke iron plate and the fourth yoke iron plate, and a second through hole is formed between the third yoke iron plate and the sixth yoke iron plate, the first through hole, the second through hole and the through hole are connected to each other, and the first through hole is closer to the moving contact assembly than the second through hole; An armature, comprising a push rod, the push rod being installed in the through hole and the first through hole, the push rod moving along the through hole and the first through hole, and pulling the moving contact assembly to move until the end of the push rod passes through the second through hole, so that the moving contact and the static contact of the contactor are closed; Wherein, the first magnetic yoke and the second magnetic yoke both include a first side and a second side that are opposite to each other in the first direction, the first side of the first magnetic yoke and the second side of the first magnetic yoke are asymmetric along the axis of the first through hole and the second through hole, the first side of the second magnetic yoke and the second side of the second magnetic yoke are asymmetric along the axis of the first through hole and the second through hole, the first direction is perpendicular to the axis direction of the through hole, and the first side of the first magnetic yoke and the first side of the second magnetic yoke are located on the same side; The coil frame includes a third side in the first direction, the third side of the coil frame is provided with a first indication structure, the first magnetic yoke is provided with a second indication structure at a position close to the third side of the coil frame, and the second magnetic yoke is provided with a third indication structure at a position close to the third side of the coil frame.

2. The electromagnetic system according to claim 1, characterized in that The second indicating structure is provided at a portion of at least one of the first yoke plate and the third yoke plate close to the third side of the coil frame; The third indication structure is provided at a portion of at least one of the fourth yoke plate and the sixth yoke plate close to the third side of the coil bobbin.

3. The electromagnetic system according to claim 1, characterized in that A first groove is provided at a portion of the first yoke plate close to the third side of the coil frame, and the second indication structure is configured as the first groove; and / or, A first protrusion is provided at a portion of the first yoke plate close to the third side of the coil frame, and the second indicating structure is configured as the first protrusion.

4. The electromagnetic system according to claim 1, characterized in that The first yoke plate is provided with an insert bar on a side close to the third side of the coil frame and facing the fourth yoke plate, and the fourth yoke plate is provided with a slot on a side close to the third side of the coil frame and facing the first yoke plate, and the insert bar is adapted to the slot; The second indication structure is configured as the insert bar, and the third indication structure is configured as the slot.

5. The electromagnetic system according to any one of claims 1 to 4, characterized in that: The electromagnetic system also includes a coil, a first terminal lug, and a second terminal lug; The coil skeleton comprises a first support plate, a support column and a second support plate, the first support plate and the second support plate are opposite and spaced apart, the support column connects the first support plate and the second support plate, the first yoke plate is connected to a side of the first support plate facing away from the support column, and the third yoke plate is connected to a side of the second support plate facing away from the support column; the through hole sequentially penetrates the first support plate, the support column and the second support plate; The coil is wound around the support column, the coil includes an inlet terminal and an outlet terminal, the first terminal lug is installed on one side of the first support plate, the second terminal lug is installed on the other side of the first support plate, and the first terminal lug and the second terminal lug are both arranged on the third side of the coil frame; the inlet terminal is connected to the first terminal lug, and the outlet terminal is connected to the second terminal lug; The first indication structure is configured as the first tab and the second tab.

6. The electromagnetic system according to claim 5, characterized in that The electromagnetic system further comprises a transient voltage suppression diode, a first wire and a second wire, wherein the first end of the transient voltage suppression diode is electrically connected to one end of the first wire, the other end of the first wire is electrically connected to the incoming line terminal, the second end of the transient voltage suppression diode is electrically connected to one end of the second wire, the other end of the second wire is electrically connected to the outgoing line terminal, the transient voltage suppression diode is installed on the third side of the coil skeleton, and the transient voltage suppression diode is used to absorb the reverse voltage generated when the coil is disconnected; The first indicating structure is also configured as the transient voltage suppression diode.

7. The electromagnetic system according to claim 6, characterized in that The electromagnetic system also includes a first insulating sleeve and a second insulating sleeve; The first insulating sleeve is sleeved on the first conductive wire, and the second insulating sleeve is sleeved on the second conductive wire.

8. The electromagnetic system according to claim 6, characterized in that The armature also includes a first limit plate and a second limit plate, the first limit plate and the second limit plate are spaced apart, the push rod is fixedly connected to the first limit plate and the second limit plate, the first limit plate is located on the side of the first yoke plate and the fourth yoke plate facing away from the first support plate, and the second limit plate is located on the side of the third yoke plate and the sixth yoke plate facing the second support plate.

9. The electromagnetic system according to claim 8, characterized in that The electromagnetic system further comprises a magnetic isolation plate, which is arranged between the second limiting plate and the third yoke plate, and between the second limiting plate and the sixth yoke plate, and is movably connected to the coil frame, and is provided with a through hole.

10. A contactor, characterized in that: It comprises a housing, a moving contact assembly and the electromagnetic system according to any one of claims 1 to 9, wherein the moving contact assembly and the electromagnetic system are both installed in the housing.

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