Contactor and switching device

Abstract

A contactor and switching device are disclosed, relating to the field of low-voltage electrical equipment technology. The contactor includes a first magnetic yoke, a second magnetic yoke, a main stationary iron core connected between the first and second magnetic yokes, a first permanent magnet and a second permanent magnet located between the first and second magnetic yokes, a first moving iron core and a second moving iron core respectively connected to the first magnetic yoke, a first stationary iron core and a second stationary iron core respectively connected to the second magnetic yoke, and a coil sleeved around the outer periphery of the main stationary iron core for electrical connection to an external power source. The first and second permanent magnets are located on opposite sides of the main stationary iron core; the first moving iron core, the second moving iron core, the first stationary iron core, and the second stationary iron core are all located between the first and second magnetic yokes; and the first moving iron core and the first stationary iron core are both located on the side of the main stationary iron core furthest from the second permanent magnet, and the second moving iron core and the second stationary iron core are both located on the side of the main stationary iron core furthest from the first permanent magnet. This contactor enables a single contactor to control multiple states.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically, to a contactor and a switching device. Background Technology

[0002] Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), and are used in power, distribution, and consumption applications. Broadly speaking, a contactor is an electrical device in industrial electricity that uses the magnetic field generated by current flowing through a coil to close contacts, thereby controlling the load. The power source of a contactor is an electromagnetic mechanism composed of an armature, a yoke, and a coil, which converts electrical energy into mechanical energy. Typically, the armature is the moving part of the contactor, driving the main and auxiliary contacts to connect and disconnect via a support structure.

[0003] Traditional methods for multi-state control using contactors involve stacking two contactors or employing combined contactors. However, stacking two contactors contradicts the design principles of low cost and miniaturization, as well as market demands. Combined contactor technology is relatively complex and currently limited by traditional structural constraints, making it immature and hindering effective size reduction. Therefore, effectively utilizing existing structures and rationally designing the contactor's magnetic circuit system and overall layout to achieve multi-state control is a pressing technical challenge. Summary of the Invention

[0004] The purpose of this invention is to provide a contactor and a switching device that can realize the control of multiple states by a single contactor.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In one aspect, the present invention provides a contactor comprising a first magnetic yoke, a second magnetic yoke, a main stationary iron core connected between the first and second magnetic yokes, a first permanent magnet and a second permanent magnet located between the first and second magnetic yokes, a first moving iron core and a second moving iron core respectively connected to the first magnetic yoke, a first stationary iron core and a second stationary iron core respectively connected to the second magnetic yoke, and a coil sleeved on the outer periphery of the main stationary iron core for electrical connection to an external power source; the first and second permanent magnets are located on opposite sides of the main stationary iron core; the first moving iron core, the second moving iron core, the first stationary iron core, and the second stationary iron core are all located between the first and second magnetic yokes; and the first moving iron core and the first stationary iron core are both located on the side of the main stationary iron core away from the second permanent magnet, and the second moving iron core and the second stationary iron core are both located on the side of the main stationary iron core away from the first permanent magnet. This contactor enables a single contactor to control multiple states.

[0007] Optionally, the magnetic poles of the first permanent magnet and the second permanent magnet are in opposite directions.

[0008] Optionally, the first permanent magnet includes at least two first sub-permanent magnets; and / or, the second permanent magnet includes at least two second sub-permanent magnets.

[0009] Optionally, the first permanent magnet is located on the side of the first moving iron core away from the main stationary iron core; and / or, the second permanent magnet is located on the side of the second moving iron core away from the main stationary iron core.

[0010] Optionally, the first magnetic yoke has a protrusion that bulges outward in a direction away from the second magnetic yoke, so that the first magnetic yoke, the first permanent magnet, the second magnetic yoke, and the second permanent magnet together form a convex-shaped structure, and the end of the main stationary iron core away from the second magnetic yoke is connected to the protrusion.

[0011] Optionally, the main stationary core is located at the intermediate position between the first stationary core and the second stationary core.

[0012] Optionally, the main stationary core includes at least one sub-stationary core, and the coil includes at least one sub-coil.

[0013] Optionally, the contactor further includes at least one magnetic circuit structure, which includes a third magnetic yoke, a fourth magnetic yoke, a third permanent magnet located between the third magnetic yoke and the fourth magnetic yoke, a third stationary iron core connected to the third magnetic yoke, and a third moving iron core connected to the fourth magnetic yoke; wherein the third magnetic yoke is connected to the end of the main stationary iron core near the first magnetic yoke, the fourth magnetic yoke is connected to the end of the main stationary iron core near the second magnetic yoke, and both the third moving iron core and the third stationary iron core are located between the main stationary iron core and the third permanent magnet.

[0014] Optionally, the third permanent magnet has the same magnetic pole direction as the first permanent magnet.

[0015] Optionally, the first magnetic yoke includes a first sub-magnetic yoke and a second sub-magnetic yoke arranged side by side along a first direction, the second magnetic yoke includes a third sub-magnetic yoke and a fourth sub-magnetic yoke arranged side by side along the first direction, and the main stationary iron core includes a first sub-main stationary iron core and a second sub-main stationary iron core arranged side by side and spaced apart along the first direction; the two ends of the first sub-main stationary iron core are respectively connected to the first sub-magnetic yoke and the third sub-magnetic yoke to form a first U-shaped structure; the two ends of the second sub-main stationary iron core are respectively connected to the second sub-magnetic yoke and the fourth sub-magnetic yoke to form a second U-shaped structure, the openings of the first U-shaped structure and the openings of the second U-shaped structure are arranged in opposite directions; the first direction is the arrangement direction of the first permanent magnet and the second permanent magnet.

[0016] In another aspect, the present invention provides a switching device comprising the contactor described above. This switching device enables a single contactor to control multiple states.

[0017] The beneficial effects of this invention include:

[0018] The contactor provided in this application includes a first magnetic yoke, a second magnetic yoke, a main stationary iron core connected between the first magnetic yoke and the second magnetic yoke, a first permanent magnet and a second permanent magnet located between the first magnetic yoke and the second magnetic yoke, a first moving iron core and a second moving iron core respectively connected to the first magnetic yoke, a first stationary iron core and a second stationary iron core respectively connected to the second magnetic yoke, and a coil sleeved on the outer periphery of the main stationary iron core for electrical connection with an external power source; the first permanent magnet and the second permanent magnet are located on opposite sides of the main stationary iron core; the first moving iron core, the second moving iron core, the first stationary iron core, and the second stationary iron core are all located between the first magnetic yoke and the second magnetic yoke; and the first moving iron core and the first stationary iron core are both located on the side of the main stationary iron core away from the second permanent magnet, and the second moving iron core and the second stationary iron core are both located on the side of the main stationary iron core away from the first permanent magnet. Thus, when no power is applied, the first moving iron core and the first stationary iron core cannot be attracted, nor can the second moving iron core and the second stationary iron core, and the contactor does not operate. When a positive pulse is applied to the coil, the first moving iron core can be attracted by the first stationary iron core, while the second moving iron core and the second stationary iron core do not operate. When a reverse pulse is applied to the coil, the second moving iron core can be attracted by the second stationary iron core, while the first moving iron core and the first stationary iron core do not operate. This application can generate magnetic fields in different directions by applying different types of pulses to the coil, thereby making the magnetic field direction add up to strengthen or cancel out the first permanent magnet (while simultaneously making the magnetic field cancel out or add up to strengthen the second permanent magnet), thus making the magnetic field attract or repel the first permanent magnet (while simultaneously making the magnetic field repel or attract the second permanent magnet), thereby enabling a single contactor to control multiple states. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used 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 a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of a contactor provided in an embodiment of the present invention;

[0021] Figure 2 This invention provides the system state and magnetic circuit when the coil is not energized, as shown in the embodiments of the present invention.

[0022] Figure 3 This invention provides the system state and magnetic circuit when the coil is energized with a positive pulse, as shown in the embodiments of the present invention.

[0023] Figure 4 This invention provides the system state and magnetic circuit when the positive pulse of the coil disappears, as shown in the embodiments of the present invention.

[0024] Figure 5 The system state and magnetic circuit when the coil is subjected to a reverse pulse are provided in the embodiments of the present invention;

[0025] Figure 6 This invention provides the system state and magnetic circuit when the coil reverse pulse disappears, as shown in the embodiments of the present invention.

[0026] Figure 7 This is a second schematic diagram of the contactor provided in an embodiment of the present invention;

[0027] Figure 8 This is the third schematic diagram of the contactor provided in the embodiment of the present invention;

[0028] Figure 9 The fourth schematic diagram of the contactor provided in the embodiment of the present invention;

[0029] Figure 10 The fifth schematic diagram of the contactor provided in the embodiment of the present invention.

[0030] Icons: 10-Main stationary iron core; 11-Sub-stationary iron core; 12-First sub-main stationary iron core; 13-Second sub-main stationary iron core; 21-First yoke; 211-Protrusion; 212-Protrusion cavity; 213-First sub-yoke; 214-Second sub-yoke; 22-Second yoke; 221-Third sub-yoke; 222-Fourth sub-yoke; 23-Third yoke; 24-Fourth yoke; 31-First permanent magnet; 32-Second permanent magnet; 33-Third permanent magnet; 41-First moving iron core; 42-Second moving iron core; 43-Third moving iron core; 51-First stationary iron core; 52-Second stationary iron core; 53-Third stationary iron core; 60-Coil; 61-Sub-coil. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Please refer to Figure 1This embodiment provides a contactor, which includes a first magnetic yoke 21, a second magnetic yoke 22, a main stationary iron core 10 connected between the first magnetic yoke 21 and the second magnetic yoke 22, a first permanent magnet 31 and a second permanent magnet 32 ​​located between the first magnetic yoke 21 and the second magnetic yoke 22, a first moving iron core 41 and a second moving iron core 42 respectively connected to the first magnetic yoke 21, a first stationary iron core 51 and a second stationary iron core 52 respectively connected to the second magnetic yoke 22, and a contactor sleeved on the outer periphery of the main stationary iron core 10 for contacting external... The contactor is electrically connected to a coil 60; the first permanent magnet 31 and the second permanent magnet 32 ​​are located on opposite sides of the main stationary iron core 10; the first moving iron core 41, the second moving iron core 42, the first stationary iron core 51, and the second stationary iron core 52 are all located between the first magnetic yoke 21 and the second magnetic yoke 22; and the first moving iron core 41 and the first stationary iron core 51 are both located on the side of the main stationary iron core 10 away from the second permanent magnet 32, and the second moving iron core 42 and the second stationary iron core 52 are both located on the side of the main stationary iron core 10 away from the first permanent magnet 31. This contactor can achieve control of multiple states by a single contactor.

[0038] like Figure 1 As shown, in this embodiment, the main stationary iron core 10, the first permanent magnet 31, and the second permanent magnet 32 ​​are all located between the first magnetic yoke 21 and the second magnetic yoke 22, and the first permanent magnet 31 and the second permanent magnet 32 ​​are located on opposite sides of the main stationary iron core 10. The coil 60 is sleeved on the outer periphery of the main stationary iron core 10. The coil 60 is used to connect to an external power source, so that the coil 60 can generate a magnetic field through the power supply of the external power source, thereby enabling the main stationary iron core 10 to generate magnetic flux in the corresponding direction, thereby making the magnetic circuit conductive.

[0039] The two ends of the first permanent magnet 31 are respectively close to the first yoke 21 and the second yoke 22. For example, the two ends of the first permanent magnet 31 may be connected to the first yoke 21 and the second yoke 22 respectively, or they may not be connected.

[0040] The main stationary iron core 10 can be one or more. When there are multiple main stationary iron cores 10, they can be arranged from the first magnetic yoke 21 toward the second magnetic yoke 22, and adjacent main stationary iron cores 10 can be connected to each other. Similarly, the coil 60 can also be one or more. This application does not limit the number of main stationary iron cores 10 and coils 60. Those skilled in the art can choose according to actual needs, as long as the main stationary iron core 10 can generate a corresponding magnetic flux after the coil 60 is energized.

[0041] In this embodiment, the first permanent magnet 31 and the second permanent magnet 32 ​​are distributed on opposite sides of the main stationary iron core 10. In this way, the magnetic flux generated by the main stationary iron core 10 can be divided into two paths. One path can be transmitted to the first permanent magnet 31 to form a closed loop, and the other path can be transmitted to the second permanent magnet 32 ​​to form another closed loop.

[0042] Please refer to Figure 1 The magnetic poles of the first permanent magnet 31 and the second permanent magnet 32 ​​are opposite, which allows for different attraction states of the moving and stationary iron cores distributed on both sides of the main stationary iron core 10. Of course, if the attraction states of the moving and stationary iron cores on both sides of the main stationary iron core 10 are required to be the same, the magnetic poles of the first permanent magnet 31 and the second permanent magnet 32 ​​can be set to be the same. For ease of understanding and description, the following explanation will use the example of the first permanent magnet 31 and the second permanent magnet 32 ​​having opposite magnetic pole directions.

[0043] Furthermore, it should be noted that both the first moving iron core 41 and the first stationary iron core 51 are located on one side of the main stationary iron core 10, and are arranged opposite to each other. Simultaneously, both the second moving iron core 42 and the second stationary iron core 52 are located on the other side of the main stationary iron core 10, and are also arranged opposite to each other. This arrangement facilitates the attraction of the first moving iron core 41 to the first stationary iron core 51 when a magnetic field is generated in one direction, and the attraction of the second moving iron core 42 to the second stationary iron core 52 when a magnetic field is generated in another direction.

[0044] The working principle of the contactor provided in this application will be explained below:

[0045] When coil 60 is not energized: there is magnetic flux in the contactor generated by the first permanent magnet 31 and the second permanent magnet 32 ​​(e.g. Figure 2 As shown, the magnetic flux flows clockwise in the closed loop of this embodiment, and the first moving iron core 41 and the first stationary iron core 51 remain separated and do not contact each other; at this time, the second moving iron core 42 and the second stationary iron core 52 also remain separated and do not contact each other.

[0046] After applying a positive pulse to coil 60: as follows: Figure 3 As shown, at this time, coil 60 generates a magnetic field in the same direction as the first permanent magnet 31 (the direction of the magnetic flux generated by coil 60 is the same as the direction of the magnetic flux generated by the first permanent magnet 31), and a magnetic field in the opposite direction to the second permanent magnet 32. Thus, under the same-direction action of coil 60 and the first permanent magnet 31, the magnetic field generated by coil 60 interacts and strengthens with the magnetic field of the first permanent magnet 31, thereby enabling the first moving iron core 41 to move towards the first stationary iron core 51 and attract it. Simultaneously, under the opposite-direction action of the magnetic field generated by coil 60 and the magnetic field generated by the second permanent magnet 32, the magnetic field generated by the second permanent magnet 32 ​​is weakened by cancellation, and the second moving iron core 42 cannot be attracted by the second stationary iron core 52, thus remaining stationary.

[0047] After the positive pulse introduced into coil 60 disappears: as follows Figure 4As shown, at this time, the magnetic field generated by coil 60 with the same direction as the magnetic field of the first permanent magnet 31, and the magnetic field with the opposite direction to the magnetic field of the second permanent magnet 32, both disappear. Only the magnetic flux generated by the first permanent magnet 31 and the second permanent magnet 32 ​​exists in the contactor (e.g., Figure 4 As shown, the magnetic flux flows clockwise in the closed loop of this embodiment. At this time, only under the action of the magnetic field generated by the first permanent magnet 31 and the second permanent magnet 32, the first moving iron core 41 cannot maintain the attracted state, and the first moving iron core 41 resets to separate from the first stationary iron core 51; at the same time, the second moving iron core 42 remains stationary.

[0048] After a reverse pulse is applied to coil 60: as follows: Figure 5 As shown, at this time, coil 60 generates a magnetic field opposite to that of the first permanent magnet 31 (the direction of the magnetic flux generated by coil 60 is opposite to that of the first permanent magnet 31), and a magnetic field in the same direction as that of the second permanent magnet 32. Thus, under the same-direction action of coil 60 and the second permanent magnet 32, the magnetic field generated by coil 60 and the magnetic field of the second permanent magnet 32 ​​interact and strengthen, thereby enabling the second moving iron core 42 to move towards the second stationary iron core 52 and attract it. Simultaneously, under the opposite-direction action of the magnetic field generated by coil 60 and the magnetic field generated by the first permanent magnet 31, the magnetic field generated by the first permanent magnet 31 is weakened by cancellation, and the first moving iron core 41 cannot be attracted by the first stationary iron core 51, thus remaining stationary.

[0049] After the reverse pulse introduced into coil 60 disappears: as Figure 6 As shown, at this time, the magnetic field generated by coil 60 that is opposite in direction to the magnetic field of the first permanent magnet 31, and the magnetic field that is in the same direction as the magnetic field of the second permanent magnet 32, both disappear. Only the magnetic flux generated by the first permanent magnet 31 and the second permanent magnet 32 ​​exists in the contactor (such as...). Figure 6 As shown, the magnetic flux flows clockwise in the closed loop of this embodiment. At this time, only under the action of the magnetic field generated by the first permanent magnet 31 and the second permanent magnet 32, the second moving iron core 42 cannot maintain the attracted state, and the second moving iron core 42 resets to separate from the second stationary iron core 52; at the same time, the first moving iron core 41 remains stationary.

[0050] In summary, the contactor provided in this application includes a first magnetic yoke 21, a second magnetic yoke 22, a main stationary iron core 10 connected between the first magnetic yoke 21 and the second magnetic yoke 22, a first permanent magnet 31 and a second permanent magnet 32 ​​located between the first magnetic yoke 21 and the second magnetic yoke 22, a first moving iron core 41 and a second moving iron core 42 respectively connected to the first magnetic yoke 21, a first stationary iron core 51 and a second stationary iron core 52 respectively connected to the second magnetic yoke 22, and a contactor sleeved on the outer periphery of the main stationary iron core 10 for contacting external... The coil 60 is electrically connected to the power supply; the first permanent magnet 31 and the second permanent magnet 32 ​​are located on opposite sides of the main stationary iron core 10; the first moving iron core 41, the second moving iron core 42, the first stationary iron core 51 and the second stationary iron core 52 are all located between the first magnetic yoke 21 and the second magnetic yoke 22; and the first moving iron core 41 and the first stationary iron core 51 are both located on the side of the main stationary iron core 10 away from the second permanent magnet 32, and the second moving iron core 42 and the second stationary iron core 52 are both located on the side of the main stationary iron core 10 away from the first permanent magnet 31. Thus, when no power is applied, the first moving iron core 41 and the first stationary iron core 51 cannot be attracted, nor can the second moving iron core 42 and the second stationary iron core 52, and the contactor does not operate. When a positive pulse is applied to the coil 60, the first moving iron core 41 can be attracted by the first stationary iron core 51, while the second moving iron core 42 and the second stationary iron core 52 do not operate. When a reverse pulse is applied to the coil 60, the second moving iron core 42 can be attracted by the second stationary iron core 52, while the first moving iron core 41 and the first stationary iron core 51 do not operate. By applying different types of pulses to the coil 60, this application can generate magnetic fields in different directions, thereby making the magnetic field direction add up to strengthen or cancel out the first permanent magnet 31 (while simultaneously making the magnetic field cancel out or add up to strengthen the second permanent magnet 32), thus making the magnetic field attract or repel the first permanent magnet 31 (while simultaneously making the magnetic field repel or attract the second permanent magnet 32), thereby enabling a single contactor to control multiple states.

[0051] Optionally, the first permanent magnet 31 may include at least two first sub-permanent magnets; and / or, the second permanent magnet 32 ​​may include at least two second sub-permanent magnets.

[0052] It should be noted that at least two first permanent magnets can be arranged side-by-side along a first direction or side-by-side along a second direction; similarly, at least two second permanent magnets can also be arranged side-by-side along the first direction or side-by-side along the second direction. The first direction refers to the arrangement direction of the first permanent magnets 31 and 32, and the second direction refers to the arrangement direction of the first stationary iron core 51 and the first moving iron core 41. It is important to note that the magnetic pole directions of each first permanent magnet and each second permanent magnet are the same.

[0053] In this arrangement, two adjacent first permanent magnets are arranged along a first direction and may or may not be connected to each other; similarly, two adjacent second permanent magnets are also arranged along the first direction and may or may not be connected to each other.

[0054] In this embodiment, please refer to Figure 1 The first permanent magnet 31 is located on the side of the first moving iron core 41 away from the main stationary iron core 10; and / or, the second permanent magnet 32 ​​is located on the side of the second moving iron core 42 away from the main stationary iron core 10.

[0055] It should be noted that the first permanent magnet 31 can be located between the first moving iron core 41 and the main stationary iron core 10, or on the side of the first moving iron core 41 away from the main stationary iron core 10; the second permanent magnet 32 ​​can be located between the second moving iron core 42 and the main stationary iron core 10, or on the side of the second moving iron core 42 away from the main stationary iron core 10. Thus, the positions of the first permanent magnet 31 and the second permanent magnet 32 ​​can be arranged in various combinations. Since all combinations can be easily deduced by those skilled in the art based on the description in this application, they will not be elaborated further in this application.

[0056] This application does not impose any restrictions on the overall shape of the contactor, wherein the overall shape of the contactor can be rectangular or convex.

[0057] For example, in one embodiment, such as Figure 7 As shown, both the first magnetic yoke 21 and the second magnetic yoke 22 are linear, and they are parallel to each other. The first permanent magnet 31 and the second permanent magnet 32 ​​are also parallel to each other. Thus, the first magnetic yoke 21, the first permanent magnet 31, the second magnetic yoke 22, and the second permanent magnet 32 ​​can be enclosed to form a long-range frame structure, resulting in a rectangular contactor.

[0058] For example, in another embodiment, such as Figure 8 As shown, the first magnetic yoke 21 has a protrusion 211 that protrudes outward in a direction away from the second magnetic yoke 22, so that the first magnetic yoke 21, the first permanent magnet 31, the second magnetic yoke 22 and the second permanent magnet 32 ​​together form a convex structure, and the end of the main stationary iron core 10 away from the second magnetic yoke 22 is connected to the protrusion 211.

[0059] It should be noted that, as Figure 8 As shown, the protrusion 211 refers to the portion extending from the body of the first magnetic yoke 21 (the body of the first magnetic yoke 21 is the portion parallel to the second magnetic yoke 22) in a direction away from the second magnetic yoke 22. The protrusion 211 can enclose and form a protrusion cavity 212 (e.g., Figure 8(As shown). Thus, the first yoke 21, the first permanent magnet 31, the second yoke 22, and the second permanent magnet 32 ​​can together form a U-shaped structure. The portions of the U-shaped structure located on both sides of the protrusion 211 can be used to house other components, making the entire contactor structure more compact, with higher integration, and thus improving space utilization. For example, the positions on both sides of the protrusion 211 can be used to house components for electrical connection with the coil 60.

[0060] Of course, the above-mentioned rectangular structure and convex structure are only examples of this application. In actual application, those skilled in the art can make appropriate adjustments according to actual needs. At the same time, they can also choose any of the settings according to actual needs.

[0061] Please refer to Figure 8 Optionally, in this embodiment, the main stationary iron core 10 is located at the midpoint between the first stationary iron core 51 and the second stationary iron core 52. In this case, the protrusion 211 is also located at the midpoint of the first magnetic yoke 21. This allows the entire structure to be symmetrically arranged, facilitating processing and assembly. Of course, within permissible limits, the protrusion 211 can also be appropriately offset to the left or right. It should be noted that the directions mentioned in this embodiment are based on the illustration and are for the purpose of describing the scheme, not as a specific limitation on its installation or actual use.

[0062] When the first magnetic yoke 21, the first permanent magnet 31, the second magnetic yoke 22, and the second permanent magnet 32 ​​together form a convex-shaped structure, such as Figure 8 As shown, optionally, the main stationary iron core 10 may include at least one sub-stationary iron core 11, and the coil 60 includes at least one sub-coil 61; the sub-coil 61 is used for electrical connection with an external power source. It should be noted that when there are more than two sub-coils 61, adjacent sub-coils 61 may or may not be connected; when there are more than two sub-stationary iron cores 11, adjacent sub-stationary iron cores 11 need to be connected to each other.

[0063] When there are more than two substationary iron cores 11, at least one substationary iron core 11 may be located inside the protrusion 211 (specifically, inside the protrusion cavity 212 of the protrusion 211), and at least one substationary iron core 11 may be located outside the protrusion 211.

[0064] It should be noted that the adjacent sub-stationary iron cores 11 can be connected by stacking them vertically or by connecting them through magnetic connectors.

[0065] The contactor mentioned earlier includes two parallel magnetic circuit structures, which allows a single contactor to control two states. Of course, in addition to including two parallel magnetic circuit structures, contactors can also include three, four, or more parallel magnetic circuit structures.

[0066] For example, the contactor also includes at least one magnetic circuit structure, such as Figure 9 As shown, the magnetic circuit structure includes a third yoke 23, a fourth yoke 24, a third permanent magnet 33 located between the third yoke 23 and the fourth yoke 24, a third stationary iron core 53 connected to the third yoke 23, and a third moving iron core 43 connected to the fourth yoke 24; wherein, the third yoke 23 is connected to the end of the main stationary iron core 10 near the first yoke 21, the fourth yoke 24 is connected to the end of the main stationary iron core 10 near the second yoke 22, and the third moving iron core 43 and the third stationary iron core 53 are both located between the main stationary iron core 10 and the third permanent magnet 33.

[0067] That is, this magnetic circuit structure and the two parallel magnetic circuit structures mentioned above share a set of main stationary iron core 10 and coil 60.

[0068] It should be noted that, as Figure 1 As shown, with the main stationary iron core 10 as the center, the first magnetic yoke 21, the second magnetic yoke 22, the first permanent magnet 31, the first moving iron core 41, and the first stationary iron core 51 located to the left of the main stationary iron core 10 can form a magnetic circuit structure; similarly, the first magnetic yoke 21, the second magnetic yoke 22, the second permanent magnet 32, the second moving iron core 42, and the second stationary iron core 52 located to the right of the main stationary iron core 10 can form another magnetic circuit structure. Based on the contactor containing two parallel magnetic circuit structures, if the contactor also includes one more magnetic circuit structure, then correspondingly, the contactor can form three parallel magnetic circuit structures; similarly, based on the contactor containing two parallel magnetic circuit structures, if the contactor also includes two more magnetic circuit structures, then correspondingly, the contactor can form four parallel magnetic circuit structures.

[0069] In this magnetic circuit structure, the third yoke 23 and the first yoke 21 are both connected to the same end of the main stationary iron core 10, and the fourth yoke 24 and the second yoke 22 are both connected to the same end of the main stationary iron core 10. For example, when the magnetic circuit structure includes one element, the first yoke 21 and the third yoke 23 can together form a "┴" shape; when the magnetic circuit structure includes two elements, the first yoke 21 and the third yoke 23 can together form an "X" shape; and when the magnetic circuit structure includes six elements, the first yoke 21 and the third yoke 23 can together form a "*" shape. Of course, these shapes are merely examples and not absolute. Those skilled in the art can adjust the contactor layout according to actual needs, as long as energizing the coil 60 allows the magnetic field generated by the main stationary iron core 10 to flow into the corresponding parallel magnetic circuit structures, thereby enabling the moving iron core and stationary iron core in the corresponding magnetic circuit structure to attract or separate from each other.

[0070] In this embodiment, the magnetic poles of the third permanent magnet 33 and the first permanent magnet 31 are in the same direction. Thus, the magnetic circuit structure composed of the third yoke 23, the fourth yoke 24, the third permanent magnet 33, the third stationary iron core 53, and the third moving iron core 43 has the same attraction or separation state as the magnetic circuit structure composed of the first yoke 21, the second yoke 22, the first permanent magnet 31, the first moving iron core 41, and the first stationary iron core 51; that is, they can attract or separate simultaneously. Of course, it should be understood that the fact that the magnetic poles of the third permanent magnet 33 and the first permanent magnet 31 are in the same direction is merely an example of this application; in other embodiments, the magnetic poles of the third permanent magnet 33 and the second permanent magnet 32 ​​may also be in the same direction.

[0071] In this embodiment, please refer to Figure 10 The first magnetic yoke 21 includes a first sub-magnetic yoke 213 and a second sub-magnetic yoke 214 arranged side by side along a first direction. The second magnetic yoke 22 includes a third sub-magnetic yoke 221 and a fourth sub-magnetic yoke 222 arranged side by side along the first direction. The main stationary iron core 10 includes a first sub-main stationary iron core 12 and a second sub-main stationary iron core 13 arranged side by side and spaced apart along the first direction. The two ends of the first sub-main stationary iron core 12 are respectively connected to the first sub-magnetic yoke 213 and the third sub-magnetic yoke 221 to form a first U-shaped structure. The two ends of the second sub-main stationary iron core 13 are respectively connected to the second sub-magnetic yoke 214 and the fourth sub-magnetic yoke 222 to form a second U-shaped structure. The openings of the first U-shaped structure and the second U-shaped structure are arranged in opposite directions. The first direction is the arrangement direction of the first permanent magnet 31 and the second permanent magnet 32.

[0072] Thus, when coil 60 is not energized, the first moving iron core 41 and the first stationary iron core 51 cannot be attracted, nor can the second moving iron core 42 and the second stationary iron core 52, and the contactor does not operate. When a positive pulse is applied to coil 60, the first moving iron core 41 can be attracted by the first stationary iron core 51, while the second moving iron core 42 and the second stationary iron core 52 do not operate. When a reverse pulse is applied to coil 60, the second moving iron core 42 can be attracted by the second stationary iron core 52, while the first moving iron core 41 and the first stationary iron core 51 do not operate. In this way, a single contactor can control multiple states.

[0073] It should be noted that when the contactor includes a first U-shaped structure and a second U-shaped structure, this application may still include at least one magnetic circuit structure on this basis. In this case, the contactor includes multiple U-shaped structures, and the multiple U-shaped structures are arranged radially, with the opening of each U-shaped structure facing away from the radial center.

[0074] Additionally, it should be noted that in this embodiment, the first U-shaped structure can be a single-piece molded component, i.e., the first sub-main stationary iron core 12, the first sub-magnetic yoke 213, and the third sub-magnetic yoke 221 are integrally formed. Of course, in other embodiments, the first sub-main stationary iron core 12, the first sub-magnetic yoke 213, and the third sub-magnetic yoke 221 can also be independent components formed by interconnection; similarly, the second U-shaped structure can be a single-piece molded component, i.e., the second sub-main stationary iron core 13, the second sub-magnetic yoke 214, and the fourth sub-magnetic yoke 222 are integrally formed. Alternatively, the second sub-main stationary iron core 13, the second sub-magnetic yoke 214, and the fourth sub-magnetic yoke 222 can be independent components.

[0075] In another aspect, the present invention provides a switching device comprising the contactor described above. This switching device enables a single contactor to control multiple states. Since the specific structure of the contactor and its beneficial effects have been described in detail above, they will not be repeated here.

[0076] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0077] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A contactor, characterized in that, The system includes a first magnetic yoke, a second magnetic yoke, a main stationary iron core connected between the first magnetic yoke and the second magnetic yoke, a first permanent magnet and a second permanent magnet located between the first magnetic yoke and the second magnetic yoke, a first moving iron core and a second moving iron core respectively connected to the first magnetic yoke, a first stationary iron core and a second stationary iron core respectively connected to the second magnetic yoke, and a coil sleeved on the outer periphery of the main stationary iron core for electrical connection with an external power source; the first permanent magnet and the second permanent magnet are located on opposite sides of the main stationary iron core. The first moving iron core, the second moving iron core, the first stationary iron core, and the second stationary iron core are all located between the first magnetic yoke and the second magnetic yoke; and the first moving iron core and the first stationary iron core are both located on the side of the main stationary iron core away from the second permanent magnet, and the second moving iron core and the second stationary iron core are both located on the side of the main stationary iron core away from the first permanent magnet; after a pulse is applied to the coil, only one of the moving iron cores can be attracted by the corresponding stationary iron core.

2. The contactor according to claim 1, characterized in that, The magnetic poles of the first permanent magnet and the second permanent magnet are in opposite directions.

3. The contactor according to claim 1, characterized in that, The first permanent magnet includes at least two first sub-permanent magnets; and / or, the second permanent magnet includes at least two second sub-permanent magnets.

4. The contactor according to claim 1, characterized in that, The first permanent magnet is located on the side of the first moving iron core away from the main stationary iron core; and / or, the second permanent magnet is located on the side of the second moving iron core away from the main stationary iron core.

5. The contactor according to any one of claims 1 to 4, characterized in that, The first magnetic yoke has a protrusion that bulges outward in a direction away from the second magnetic yoke, so that the first magnetic yoke, the first permanent magnet, the second magnetic yoke, and the second permanent magnet together form a convex-shaped structure, and the end of the main stationary iron core away from the second magnetic yoke is connected to the protrusion.

6. The contactor according to claim 1, characterized in that, The main stationary core includes at least one sub-stationary core, and the coil includes at least one sub-coil.

7. The contactor according to claim 1, characterized in that, The contactor further includes at least one magnetic circuit structure, which includes a third magnetic yoke, a fourth magnetic yoke, a third permanent magnet located between the third magnetic yoke and the fourth magnetic yoke, a third stationary iron core connected to the third magnetic yoke, and a third moving iron core connected to the fourth magnetic yoke; wherein the third magnetic yoke is connected to the end of the main stationary iron core near the first magnetic yoke, the fourth magnetic yoke is connected to the end of the main stationary iron core near the second magnetic yoke, and the third moving iron core and the third stationary iron core are both located between the main stationary iron core and the third permanent magnet.

8. The contactor according to claim 7, characterized in that, The third permanent magnet has the same magnetic pole direction as the first permanent magnet.

9. The contactor according to claim 1 or 7, characterized in that, The first magnetic yoke includes a first sub-magnetic yoke and a second sub-magnetic yoke arranged side by side along a first direction. The second magnetic yoke includes a third sub-magnetic yoke and a fourth sub-magnetic yoke arranged side by side along the first direction. The main stationary iron core includes a first sub-main stationary iron core and a second sub-main stationary iron core arranged side by side and spaced apart along the first direction. The two ends of the first sub-main stationary iron core are respectively connected to the first sub-magnetic yoke and the third sub-magnetic yoke to form a first U-shaped structure. The two ends of the second sub-main stationary iron core are respectively connected to the second sub-magnetic yoke and the fourth sub-magnetic yoke to form a second U-shaped structure. The openings of the first U-shaped structure and the second U-shaped structure are arranged in opposite directions. The first direction is the arrangement direction of the first permanent magnet and the second permanent magnet.

10. A switching device, characterized in that, Includes the contactor as described in any one of claims 1 to 9.

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