Permanent magnet type electromagnetic system and contactor

Abstract

The invention provides a permanent magnet type electromagnetic system and a contactor. The permanent magnet type electromagnetic system comprises a static iron core, two coil windings, a movable iron core, a contact supporting piece, a reset piece and a magnetic conduction driving assembly. The two coil windings are arranged on the static iron core, the movable iron core is arranged opposite to the static iron core in the first direction, the contact supporting piece is connected with the movable iron core, and the magnetic conduction driving assembly is connected with the contact supporting piece. A first magnetic field force is generated between the magnetic conduction driving assembly and the static iron core, a second magnetic field force is generated between the movable iron core and the static iron core, and a third magnetic field force is generated between the static iron core and the coil winding. The reset piece is arranged on the side, away from the contact supporting piece, of the magnetic conduction driving assembly and exerts reset force in the direction of the movable iron core on the magnetic conduction driving assembly. The first magnetic field force is the same as the reset direction, the third magnetic field force is opposite to the first magnetic field force, and the second magnetic field force is opposite to the first magnetic field force. The moving stroke of the movable iron core can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a permanent magnet electromagnetic system and a contactor. Background Art

[0002] The permanent magnet of the electromagnetic system of the permanent magnet of the permanent magnet is dominant when the coil winding is not energized or the energizing voltage is insufficient, and the magnetic field of the permanent magnet is dominant, magnetizing the magnetic conductive plate, so that the magnetic conductive plate attracts the lower armature connected to the iron core, so that the contactor remains in the open state. When the coil winding is energized and the energizing voltage is large enough, the electromagnetic field of the coil winding is dominant, and the magnetized magnetic yoke attracts the upper armature connected to the iron core to drive the iron core to move, so that the contactor is closed.

[0003] The traditional electromagnetic system uses a single-winding solenoid "I" type electromagnetic structure. The magnetic attraction of this structure is limited by the diameter of the central solenoid, resulting in a shorter stroke of the moving iron core, which cannot be used in application scenarios with large currents and large strokes. Summary of the invention

[0004] In view of this, the present application provides a permanent magnet electromagnetic system and a contactor to improve the problem that the traditional electromagnetic system cannot be applied to application scenarios with a large moving iron core stroke.

[0005] The technical solution adopted by this application to solve the above technical problems is:

[0006] In a first aspect, an embodiment of the present application provides a permanent magnet electromagnetic system, comprising:

[0007] Static iron core;

[0008] Two coil windings, both arranged on the static iron core;

[0009] A moving iron core, arranged opposite to the stationary iron core along a first direction;

[0010] A contact support member connected to the moving iron core;

[0011] a magnetic conductive drive component connected to the contact support, wherein the magnetic conductive drive component, the moving iron core and the contact support are configured to move synchronously, the magnetic conductive drive component and the stationary iron core are configured to generate a first magnetic field force, the moving iron core and the stationary iron core are configured to generate a second magnetic field force, and the stationary iron core and the coil winding are configured to generate a third magnetic field force; and

[0012] A reset member, disposed on a side of the magnetic conductive drive component away from the contact support member, and applying a reset force to the magnetic conductive drive component in a direction toward the moving iron core;

[0013] The first magnetic field force is in the same direction as the reset force, the third magnetic field force is in the opposite direction to the first magnetic field force, and the second magnetic field force is in the opposite direction to the first magnetic field force.

[0014] In some embodiments of the present application, when the coil winding is not energized, the magnetic conductive drive component and the static iron core generate a first magnetic field force, and the reset member applies a reset force to the magnetic conductive drive component, so that the magnetic conductive drive component contacts the static iron core under the action of the first magnetic field force and the reset force;

[0015] When the coil winding is energized, the magnetic drive assembly and the static iron core generate the first magnetic field force, the static iron core generates the third magnetic field force to offset the first magnetic field force, and the second magnetic field force is generated between the static iron core and the moving iron core to move the moving iron core toward the static iron core.

[0016] In some embodiments of the present application, the magnetic conductive drive assembly includes two magnetic conductive drive modules arranged relatively to each other along a second direction, and along the second direction, one side of the static iron core is configured to contact one of the magnetic conductive drive modules, and the other side is configured to contact the other magnetic conductive drive module.

[0017] In some embodiments of the present application, the magnetic conductive drive module includes a mounting member and a permanent magnet, the mounting member is detachably connected to the contact support member, and the permanent magnet is disposed on the mounting member and can generate the first magnetic field force together with the static iron core.

[0018] In some embodiments of the present application, there are two permanent magnets, the two permanent magnets are arranged opposite to each other along the third direction, and the two permanent magnets are respectively arranged close to the two coil windings.

[0019] In some embodiments of the present application, the magnetic driving module also includes a first magnetic conductor, which is arranged on the mounting member and in contact with the permanent magnet, and the first magnetic conductor is configured on one side of the first direction to generate a first magnetic field force with the static iron core.

[0020] In some embodiments of the present application, the first magnetic conductor is configured to have a chamfer on one side that generates the first magnetic field force with the static iron core.

[0021] In some embodiments of the present application, the magnetic conductive driving module further includes a second magnetic conductive body disposed on the mounting member, and the second magnetic conductive body contacts a side of the two permanent magnets away from the first magnetic conductive body.

[0022] In some embodiments of the present application, the static iron core includes a first magnetic flux plate, two magnetic flux columns and two second magnetic flux plates, the two magnetic flux columns are arranged on the first magnetic flux plate at intervals along the second direction, the two second magnetic flux plates are respectively arranged on the side of the two magnetic flux columns away from the first magnetic flux plate, the coil winding is wound around the magnetic flux columns, and the second magnetic flux plates are configured to generate the first magnetic field force with the magnetic conductive drive assembly and generate the second magnetic field force with the moving iron core.

[0023] In some embodiments of the present application, the second magnetic flux plate includes a first magnetic flux portion and a second magnetic flux portion, the first magnetic flux portion and the second magnetic flux portion are spaced apart from each other, the first magnetic flux portion is connected to the magnetic flux column and is configured to generate the second magnetic field force with the moving iron core, and the second magnetic flux portion is configured to generate the first magnetic field force with the magnetic conductive drive assembly.

[0024] In a second aspect, an embodiment of the present application provides a contactor, comprising:

[0025] case;

[0026] The permanent magnet electromagnetic system as described in the first aspect is disposed in the shell, and the magnetic conductive drive component is slidably connected to the inner wall of the shell.

[0027] In summary, due to the adoption of the above technical solution, this application has at least the following beneficial effects:

[0028] The embodiments of the present application provide a permanent magnet electromagnetic system and a contactor. The permanent magnet electromagnetic system firstly increases the magnetic attraction between the moving and static iron cores by setting two coil windings, thereby increasing the movement stroke of the moving iron core; secondly, a first magnetic field force can be generated between the static iron core and the magnetic driving component, and the magnetic driving component can drive the moving iron core to move synchronously. The first magnetic field force is in the same direction as the reset force, so that when the reset member is used to reset the moving iron core, the magnetic driving component can be affected by the magnetic attraction of the static iron core, so that the magnetic driving component can drive the moving iron core to perform a reset movement, and the magnetic driving component can generate a first magnetic field force between the static iron core and the magnetic driving component, and the magnetic driving component can drive the moving iron core to perform a reset movement. The magnetic drive component plays an auxiliary role in resetting, which is helpful to reduce the resetting force required by the resetting member, that is, a resetting member with a smaller resetting force can be used, and while the static iron core generates a second magnetic field force with the moving iron core, it also generates a third magnetic field force in the opposite direction to the first magnetic field force, so that the third magnetic field force can offset the first magnetic field force, so that when the static iron core subsequently adsorbs the moving iron core and moves the moving iron core toward the static iron core under the action of the second magnetic field force, it basically only needs to overcome a smaller resetting force than that required by a traditional contactor, thereby further increasing the movement stroke of the moving iron core. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a contactor provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 Explosion diagram of

[0031] Figure 3 A schematic structural diagram of a permanent magnet electromagnetic system provided in an embodiment of the present application;

[0032] Figure 4 for Figure 3 Schematic diagram of the explosion structure;

[0033] Figure 5 A schematic structural diagram of a magnetic drive component in a permanent magnet electromagnetic system provided in an embodiment of the present application;

[0034] Figure 6 for Figure 5 Explosion diagram of

[0035] Figure 7 A schematic structural diagram of a static iron core in a permanent magnet electromagnetic system provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of another static iron core in a permanent magnet electromagnetic system provided in an embodiment of the present application

[0037] Figure 9 A schematic structural diagram of a buffer component in a permanent magnet electromagnetic system provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 1. static iron core; 11. first magnetic flux plate; 12. second magnetic flux plate; 121. first magnetic flux portion; 122. second magnetic flux portion; 13. magnetic flux column; 2. coil winding; 3. moving iron core; 4. contact support; 41. plug-in column; 42. clamping platform; 5. magnetic drive assembly; 51. mounting member; 511. plug-in hole; 512. first buckle; 52. permanent magnet; 521. mounting groove; 522. cavity; 523. convex hull; 524. limiting protrusion; 525. second buckle; 53. first magnetic conductor; 531. chamfer; 54. second magnetic conductor; 6. buffer member; 61. guide strip; 7. housing; 8. reset member;

[0040] Z, first direction; Y, second direction; X, third direction. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0042] In the description of this application, it should be understood that the words "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In this application, the word “exemplary” is used to mean “serving as an example, instance, or illustration.” Any embodiment described in this application as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0044] See also Figure 1 and Figure 2 The embodiment of the present application provides a contactor, which is a permanent magnet DC contactor, comprising a housing 7 and a permanent magnet electromagnetic system. The permanent magnet electromagnetic system is arranged in the housing 7, and some parts of the permanent magnet electromagnetic system can move in the housing 7 to realize the on-off control of the contactor on the external device.

[0045] In some embodiments, see Figure 3 and Figure 4 The permanent magnet electromagnetic system comprises a static iron core 1, two coil windings 2, a moving iron core 3, a contact support 4, a reset member 8 and a magnetic conductive drive assembly 5. The two coil windings 2 are both arranged on the static iron core 1, the moving iron core 3 is arranged opposite to the static iron core 1 along the first direction Z, the contact support 4 is connected to the moving iron core 3, the magnetic conductive drive assembly 5 is connected to the contact support 4, and the magnetic conductive drive assembly 5, the moving iron core 3 and the contact support 4 are configured to move synchronously. The magnetic conductive drive assembly 5 and the static iron core 1 are configured to generate a first magnetic field force, the moving iron core 3 and the static iron core 1 are configured to generate a second magnetic field force, and the static iron core 1 and the coil winding 2 are configured to generate a third magnetic field force. The reset member 8 is arranged on the side of the magnetic conductive drive assembly 5 away from the contact support 4, and applies a reset force to the magnetic conductive drive assembly 5 in the direction of the moving iron core 3. Among them, the first magnetic field force is in the same direction as the reset direction, the third magnetic field force is in the opposite direction to the first magnetic field force, and the second magnetic field force is in the opposite direction to the first magnetic field force.

[0046] The technical solution of the present application is to increase the magnetic attraction between the moving and static iron cores 1 by setting two coil windings 2, thereby increasing the movement stroke of the moving iron core 3; secondly, a first magnetic field force can be generated between the static iron core 1 and the magnetic driving component 5, and the magnetic driving component 5 can drive the moving iron core 3 to move synchronously, and the first magnetic field force is in the same direction as the reset force, so that when the reset member 8 is used to reset the moving iron core 3, the magnetic driving component 5 can be affected by the magnetic attraction of the static iron core 1, so that the magnetic driving component 5 can drive the moving iron core 3 to perform a reset movement, and the magnetic driving component 5 plays an auxiliary role in the reset. The auxiliary effect is beneficial to reducing the reset force required by the reset member 8, that is, the reset member 8 with a smaller reset force can be used, and the static iron core 1, while generating the second magnetic field force with the moving iron core 3, also generates a third magnetic field force in the opposite direction to the first magnetic field force, so that the third magnetic field force can offset the first magnetic field force, so that when the static iron core 1 subsequently adsorbs the moving iron core 3 and the moving iron core 3 moves toward the static iron core 1 under the action of the second magnetic field force, it basically only needs to overcome a reset force that is smaller than the reset force required by the traditional contactor, thereby further improving the movement stroke of the moving iron core 3.

[0047] It should be noted that the first magnetic field force is generated by the permanent magnet 52 in the magnetic drive assembly 5 to magnetize the static iron core 1, so that a magnetic field is generated between the permanent magnet 52 and the static iron core 1, and then the first magnetic field force is generated. The first magnetic field force is in the same direction as the force applied by the reset member 8 to reset the moving iron core 3, thereby assisting the reset member 8 to reset the moving iron core 3. Compared with the traditional electromagnetic system, the reset force required by the reset member 8 can be effectively reduced. When the coil winding 2 is subsequently energized and the static iron core 1 adsorbs the moving iron core 3 under the action of the second magnetic field force, the reset force of the reset member 8 that the moving iron core 3 needs to overcome is smaller than the traditional reset force, thereby increasing the moving stroke of the moving iron core 3.

[0048] Furthermore, the first magnetic field force is equal to and opposite to the third magnetic field force, so that after the subsequent coil winding 2 is energized, the third magnetic field force generated by the static iron core 1 itself can effectively offset the first magnetic field force, thereby preventing the first magnetic field force from forming resistance that hinders the movement of the moving iron core 3 toward the static iron core 1, thereby increasing the moving range of the moving iron core 3.

[0049] In some embodiments, when the coil winding 2 is not energized, the magnetic drive assembly 5 and the static iron core 1 generate a first magnetic field force, and the reset member 8 applies a reset force to the magnetic drive assembly 5, so that the magnetic drive assembly 5 is in contact with the static iron core 1 under the action of the first magnetic field force and the reset force. Because of the assistance of the first magnetic field force, the reset force of the reset member 8 can be reduced, for example, if the reset member 8 is a spring, the elastic performance of the spring can be reduced.

[0050] When the coil winding 2 is energized, the magnetic drive assembly 5 and the static iron core 1 generate a first magnetic field force, the static iron core 1 generates a third magnetic field force to offset the first magnetic field force, and a second magnetic field force is generated between the static iron core 1 and the moving iron core 3 to move the moving iron core 3 toward the static iron core 1. By using the third magnetic field force to at least partially offset the first magnetic field force, it is preferred that the first magnetic field force and the third magnetic field force are equal in magnitude to completely offset the first magnetic field force, thereby preventing the first magnetic field force from hindering the static iron core 1 from adsorbing the moving iron core 3. And because the elastic performance of the reset member 8 is reduced, the resistance of the reset member 8 to the movement of the moving iron core 3 toward the static iron core 1 is also reduced, which is conducive to increasing the travel of the static iron core 1 to adsorb the moving iron core 3 and adapt to the situation of large current and large travel.

[0051] In some embodiments, see Figure 5 and Figure 6 , the magnetic driving component 5 includes two magnetic driving modules arranged relatively along the second direction Y, and the second direction Y is perpendicular to the first direction Z. Along the second direction Y, one side of the static iron core 1 is configured to contact with one of the magnetic driving modules, and the other side is configured to contact with the other magnetic driving module. It should be noted here that one side and the other side of the static iron core 1 refer to the side of the static iron core 1 facing the magnetic driving module on one side and the other side of the second direction Y. By making the contact surface of the static iron core 1 relatively arranged with the magnetic driving module, a first magnetic field force is generated, and under the action of the reset member 8, the static iron core 1 can contact with the magnetic driving module. In the process of gradually reducing the distance between the contact surface and the magnetic driving module, the first magnetic field force will also gradually increase, thereby improving the contact tightness between the static iron core 1 and the magnetic driving module, and can also relatively reduce the reset force required to be provided by the reset member 8.

[0052] Further, the magnetic driving module includes a mounting member 51 and a permanent magnet 52. The mounting member 51 is detachably connected to the contact support member 4, and the permanent magnet 52 is arranged on the mounting member 51 and can generate a first magnetic field force with the static iron core 1. Exemplarily, a plug hole 511 and two first buckles 512 are provided on the side of the mounting member 51 facing the contact support member 4, and the plug hole 511 is located between the two first buckles 512. A clamping platform 42 and a plug-in column 41 are provided on the side of the clamping platform 42 facing the mounting member 51. The plug-in column 41 is arranged on the side of the clamping platform 42 facing the mounting member 51. By inserting the plug-in column 41 into the plug-in hole 511, the side of the clamping platform 42 facing the mounting member 51 is abutted against the plane of the travel plug hole 511, and the side away from the mounting member 51 is clamped with the first buckle 512, so as to realize the detachable connection between the mounting member 51 and the contact support member 4, so that the mounting member 51 and the contact support member 4 can move synchronously.

[0053] An installation groove 521 is opened in the installation member 51, and the permanent magnet 52 is arranged in the installation groove 521, and one side of the permanent magnet 52 can be arranged opposite to one side of the static iron core 1, so that the contact surface of the static iron core 1 can be magnetized, and then a first magnetic field force is generated between the static iron core 1 and the permanent magnet 52.

[0054] Furthermore, the installation slot 521 includes two cavities 522, and the inner walls of the two cavities 522 on the sides close to each other are both provided with anti-mistake chamfers 531. Correspondingly, the permanent magnet 52 is provided with a permanent magnet chamfer 531, so that the permanent magnet 52 can only be installed according to the shape of the cavity 522, avoiding the permanent magnet 52 from being installed incorrectly, and because of the existence of the anti-mistake chamfer 531, the two permanent magnets 52 can always maintain opposite magnetic properties after installation.

[0055] In some embodiments, two permanent magnets 52 are arranged relatively along a third direction X, and the two permanent magnets 52 are respectively arranged close to the two coil windings 2, so that the two permanent magnets 52 can respectively form a magnetic field with the corresponding coil windings 2 at the corresponding positions of the static iron core 1, which is beneficial to shorten the distance between the permanent magnet 52 and the static iron core 1 to form a magnetic field and enhance the magnetic field force.

[0056] In some embodiments, see Figure 5 and Figure 6 , the magnetic driving module also includes a first magnetic conductor 53. The first magnetic conductor 53 is arranged on the mounting member 51 and contacts the permanent magnet 52. The first magnetic conductor 53 is configured to generate a first magnetic field force with the static iron core 1 on one side of the first direction Z. Exemplarily, two first magnetic conductors 53 are respectively arranged in two cavities 522, and each first magnetic conductor 53 contacts a permanent magnet 52, so that the magnetic flux of the permanent magnet 52 can be conducted through the first magnetic conductor 53 and form a magnetic field with the static iron core 1 to generate a first magnetic field force. A convex bulge 523 is provided on at least one side wall of the cavity 522, and the convex bulge 523 contacts one side of the first magnetic conductor 53 to limit the movement of the first magnetic conductor 53 in the second direction Y, and preferably, the convex bulge 523 is also located on one side of the permanent magnet 52 in the third direction X, and the permanent magnet 52 contacts the convex bulge 523 to limit the movement of the permanent magnet 52 in the third direction X.

[0057] Furthermore, the first magnetic conductor 53 is configured to have a chamfer 531 on one side that generates the first magnetic field force with the static iron core 1, which can increase the magnetic flux and effectively avoid the accumulation of magnetic flux.

[0058] In some embodiments, the magnetic driving module further includes a second magnetic conductor 54 disposed on the mounting member 51. The second magnetic conductor 54 contacts the side of the two permanent magnets 52 away from the first magnetic conductor 53, further increasing the magnetic flux. Exemplarily, by providing the second magnetic conductor 54, the magnetic flux of the two permanent magnets 52 can be conducted by the second magnetic conductor 54, thereby increasing the magnetic flux that the two first magnetic conductors 53 can conduct independently, and improving the first magnetic field force.

[0059] Furthermore, along the first direction Z, limiting protrusions 524 and second buckles 525 are respectively provided on the inner walls on both sides of the installation groove 521, and the second magnetic conductor 54 is installed into the installation groove 521 by pressing, and the limiting protrusions 524 and the second buckles 525 fix the second magnetic conductor 54.

[0060] In some embodiments, see Figure 7 The stationary iron core 1 includes a first magnetic flux plate 11, two magnetic flux columns 13 and two second magnetic flux plates 12. The two magnetic flux columns 13 are arranged on the first magnetic flux plate 11 at intervals along the second direction Y, and the two second magnetic flux plates 12 are respectively arranged on the side of the two magnetic flux columns 13 away from the first magnetic flux plate 11, the coil winding 2 is wound around the magnetic flux columns 13, and the second magnetic flux plates 12 are configured to generate a first magnetic field force with the magnetic conductive drive component 5 and generate a second magnetic field force with the moving iron core 3. A U-shaped static iron core 1 structure is formed by a first magnetic flux plate 11, two magnetic flux columns 13 and two second magnetic flux plates 12. Each coil winding 2 is wound with a magnetic flux column 13 and is located between the first magnetic flux plate 11 and one of the second magnetic flux plates 12. When the coil winding 2 is energized, the first magnetic flux plate 11, the two magnetic flux columns 13, the two second magnetic flux plates 12 and the moving iron core 3 can jointly form a magnetic field. Compared with the traditional single-coil electromagnetic system, the two coil windings 2 have a larger magnetic flux, which can increase the magnetic attraction between the static iron core 1 and the moving iron core 3, and then increase the moving stroke of the moving iron core 3 to adapt to large currents and large strokes.

[0061] For further information, see Figure 8 The second magnetic flux plate 12 includes a first magnetic flux portion 121 and a second magnetic flux portion 122, the first magnetic flux portion 121 and the second magnetic flux portion 122 are spaced apart, the first magnetic flux portion 121 is connected to the magnetic flux column 13 and is configured to generate a second magnetic field force with the moving iron core 3, and the second magnetic flux portion 122 is configured to generate a first magnetic field force with the magnetic conductive drive assembly 5. By isolating the first magnetic flux portion 121 that forms the second magnetic field force and the third magnetic field force from the second magnetic flux portion 122 that forms the first magnetic field force, it is effectively prevented that when the current flowing through the coil winding 2 is too large, the first magnetic field force is too large, which affects the static iron core 1 to attract the moving iron core 3 to move.

[0062] In some embodiments, see Figure 9A buffer 6 is provided on the side of the moving iron core 3 facing away from the static iron core 1, and at least two opposite guide strips 61 are provided on the buffer 6. The side of the contact support 4 facing the moving iron core 3 is provided between the two guide strips 61 to play the role of installation and positioning of the contact support 4, and the contact support 4 is fixedly connected to the moving iron core 3 by bolts, and a part of the buffer 6 covers the bolts to shield the bolt heads.

[0063] In summary, the present application uses the static iron core 1 to set two coil windings 2 to increase the magnetic field force between the static iron core 1 and the moving iron core 3, so as to increase the stroke of the moving iron core 3 and adapt to the situation of large current. The permanent magnet 52 is also used to be set on the mounting member 51 and can move with the mounting member 51, so that the permanent magnet 52 can generate a magnetic field through the magnetic conductor and the static iron core 1, thereby assisting the reset member 8 to reset the moving iron core 3, and then reducing the reset force required by the reset member 8. In the process of the static iron core 1 adsorbing the moving iron core 3, the force of the reset member 8 that needs to be overcome is also smaller, which is equivalent to further increasing the force of the static iron core 1 adsorbing the moving iron core 3, thereby increasing the moving stroke of the moving iron core 3.

[0064] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0065] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of the present application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of the present application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

Claims

1. A permanent magnet electromagnetic system, characterized in that: include: Static iron core; Two coil windings, both arranged on the static iron core; A moving iron core, arranged opposite to the stationary iron core along a first direction; A contact support member connected to the moving iron core; A magnetic conductive drive component is connected to the contact support, wherein the magnetic conductive drive component, the moving iron core and the contact support are configured to move synchronously, the magnetic conductive drive component and the stationary iron core are configured to generate a first magnetic field force, the moving iron core and the stationary iron core are configured to generate a second magnetic field force, and the stationary iron core and the coil winding are configured to generate a third magnetic field force; as well as A reset member, disposed on a side of the magnetic conductive drive component away from the contact support member, and applying a reset force to the magnetic conductive drive component in a direction toward the moving iron core; The first magnetic field force is in the same direction as the reset force, the third magnetic field force is in the opposite direction to the first magnetic field force, and the second magnetic field force is in the opposite direction to the first magnetic field force.

2. The permanent magnet electromagnetic system according to claim 1, characterized in that: When the coil winding is not energized, the magnetic conductive drive component and the static iron core generate a first magnetic field force, and the reset member applies a reset force to the magnetic conductive drive component, so that the magnetic conductive drive component contacts the static iron core under the action of the first magnetic field force and the reset force; When the coil winding is energized, the magnetic drive assembly and the static iron core generate the first magnetic field force, the static iron core generates the third magnetic field force to offset the first magnetic field force, and the second magnetic field force is generated between the static iron core and the moving iron core to move the moving iron core toward the static iron core.

3. The permanent magnet electromagnetic system according to claim 1, characterized in that: The magnetic conductive drive component includes two magnetic conductive drive modules arranged opposite to each other along a second direction. Along the second direction, one side of the static iron core is configured to contact one of the magnetic conductive drive modules, and the other side is configured to contact the other magnetic conductive drive module.

4. The permanent magnet electromagnetic system according to claim 3, characterized in that: The magnetic conductive driving module comprises a mounting member and a permanent magnet. The mounting member is detachably connected to the contact support member. The permanent magnet is arranged on the mounting member and can generate the first magnetic field force together with the static iron core.

5. The permanent magnet electromagnetic system according to claim 4, characterized in that: There are two permanent magnets, which are arranged opposite to each other along the third direction and are respectively arranged close to the two coil windings.

6. The permanent magnet electromagnetic system according to claim 5, characterized in that: The magnetic driving module further includes a first magnetic conductor, which is disposed on the mounting component and in contact with the permanent magnet. The first magnetic conductor is configured on one side of the first direction to generate a first magnetic field force with the static iron core.

7. The permanent magnet electromagnetic system according to claim 6, characterized in that: The first magnetic conductor is configured to have a chamfer on one side thereof that generates a first magnetic field force with the static iron core.

8. The permanent magnet electromagnetic system according to claim 6, characterized in that: The magnetic conductive driving module further includes a second magnetic conductive body arranged on the mounting member, and the second magnetic conductive body is in contact with a side of the two permanent magnets away from the first magnetic conductive body.

9. The permanent magnet electromagnetic system according to claim 1, characterized in that: The static iron core includes a first magnetic flux plate, two magnetic flux columns and two second magnetic flux plates, the two magnetic flux columns are arranged on the first magnetic flux plate at intervals along the second direction, the two second magnetic flux plates are respectively arranged on the side of the two magnetic flux columns away from the first magnetic flux plate, the coil winding is wound around the magnetic flux columns, and the second magnetic flux plates are configured to generate the first magnetic field force with the magnetic conductive drive component and generate the second magnetic field force with the moving iron core.

10. The permanent magnet electromagnetic system according to claim 9, characterized in that: The second magnetic flux plate includes a first magnetic flux portion and a second magnetic flux portion, the first magnetic flux portion and the second magnetic flux portion are spaced apart, the first magnetic flux portion is connected to the magnetic flux column and is configured to generate the second magnetic field force with the moving iron core, and the second magnetic flux portion is configured to generate the first magnetic field force with the magnetic conductive drive component.

11. A contactor, characterized in that: include: case; The permanent magnet electromagnetic system according to any one of claims 1 to 10 is arranged in the shell, and the magnetic conductive drive component is slidably connected to the inner wall of the shell.

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