Halbach type multi-side magnetic field direction shielding type rare earth magnet

Abstract

The utility model relates to the technical field of Halbach shells, and particularly discloses a Halbach type multi-side magnetic field direction shielding type rare earth magnet, which comprises a magnetic group and a shell matched with the magnetic group for use, and comprises a plurality of plate bodies made of a magnetic isolation material, and a magnetic field generated by the magnetic group is accurately shielded through the plate bodies made of the magnetic isolation material. Oriented control of a magnetic field can be achieved, the first groove body is defined by the multiple plate bodies, the first groove body is used for containing the magnetic set, the multiple plate bodies are used for shielding the magnetic field corresponding to the magnetic set, the plate bodies made of magnetic isolation materials can effectively shield the magnetic field generated by the magnetic set, and the magnetic field is prevented from leaking or interfering other devices; the first groove body is tightly defined by the multiple plate bodies, so that the whole structure is compact and firm, the integration degree of the equipment is improved, meanwhile, the stability and durability of the equipment are improved, the magnetic field lines are guided by the multiple plate bodies made of the magnetic isolation materials, the magnetic field lines can penetrate through a target area more intensively, and the magnetic field effect is improved. Therefore, a stronger magnetic field is formed in a specific area.

Description

Technical Field

[0001] The utility model relates to the technical field of Haier shell, and particularly discloses a Halbach multi-side magnetic field direction shielding rare earth magnet. Background Art

[0002] Magnets are widely used in high-energy physics, industrial equipment (such as nuclear magnetic resonance, maglev, permanent magnet special motors, etc.) and daily life. In these applications, the magnetic field distribution of traditional magnets is relatively uniform, without obvious unilateral enhancement or weakening effect, and the intensity and direction of the magnetic field are relatively consistent on the entire surface of the magnet. In precision instruments or special processes, only one side of the magnet is required to generate a strong magnetic field, while the other side requires a very weak magnetic field or no magnetic field at all. Due to the relatively uniform magnetic field distribution of traditional magnets, it is difficult to meet this requirement of unilateral enhancement, thus restricting their application in these fields, which to a certain extent limits their use in applications requiring unilateral magnetic fields. Content of the Utility Model

[0003] In order to overcome the defects and deficiencies existing in the prior art, the purpose of the utility model is to provide a Halbach multi-side magnetic field direction shielding rare earth magnet.

[0004] To achieve the above purpose, a Halbach multi-side magnetic field direction shielding rare earth magnet of the utility model includes a magnetic group and a housing used in cooperation with the magnetic group. The housing includes a plurality of plate bodies made of magnetic shielding materials. By precisely shielding the magnetic field generated by the magnetic group through the plate bodies made of magnetic shielding materials, directional control of the magnetic field can be achieved. The plurality of plate bodies enclose a first groove for accommodating the magnetic group, and the plurality of plate bodies are used to shield the corresponding magnetic field of the magnetic group. The plate bodies made of magnetic shielding materials can effectively shield the magnetic field generated by the magnetic group, preventing magnetic field leakage or interference with other devices. The plurality of plate bodies are tightly enclosed to form a first groove, making the entire structure compact and firm. This compact structure design helps to save space, improve the integration of the device, and also helps to improve the stability and durability of the device.

[0005] Further, the magnetic group includes a first magnet, a second magnet and a third magnet arranged on the first magnet. The second magnet and the third magnet are respectively located on both sides of the first magnet. By respectively arranging the second magnet and the third magnet on both sides of the first magnet, a more complex and precise magnetic field distribution can be formed. The second magnet and the third magnet are arranged on both sides of the first magnet, which can effectively reduce the leakage of the magnetic field at the edge of the magnet (i.e., magnetic leakage). Due to the more concentrated and controllable magnetic field distribution, it can also reduce the magnetization interference with other electronic components or devices, improving the stability and reliability of the overall system.

[0006] Furthermore, the magnetic assembly further includes a fourth magnet, which is located on the side of the third magnet away from the first magnet. The magnetic poles of the first magnet and the fourth magnet face in opposite directions. By adding the fourth magnet with its magnetic poles facing in the opposite direction to those of the first magnet, the magnetic field strength of the magnetic assembly in a specific direction can be further enhanced, causing the magnetic field lines to be more concentrated on the target side and forming a stronger unilateral magnetic field. The fourth magnet can further focus the magnetic field, reduce the diffusion of the magnetic field in non-target areas, and improve the utilization efficiency of the magnetic field.

[0007] Furthermore, the magnetic poles of the second magnet and the third magnet face in opposite directions, and the magnetic pole orientation of the first magnet is perpendicular to that of the second magnet / third magnet. Due to the perpendicular magnetic pole orientations, a more complex magnetic field distribution is formed inside the magnetic assembly, making the distribution of the magnetic field in three-dimensional space more diverse and capable of meeting more diverse application requirements. The perpendicular and opposite magnetic pole arrangements help reduce the leakage of the magnetic field at the edges of the magnets (i.e., magnetic flux leakage), because the mutual forces between the magnetic poles will guide the magnetic field lines to mainly flow along the inside of the magnets rather than diffuse into the external space.

[0008] Furthermore, a magnetic conductive layer is provided on the plate body, and the magnetic conductive layer is located on the side of the plate body away from the magnetic assembly. The magnetic conductive layer has a high magnetic permeability and can guide the magnetic field lines to flow along its surface or inside, reducing the direct leakage of the magnetic field in the air. This guiding effect enables the magnetic field energy that might otherwise be lost to be better utilized, improving the utilization efficiency of the magnetic field. Through the guidance of the magnetic conductive layer, the magnetic field lines can pass through the target area more concentratedly, thereby forming a stronger magnetic field in a specific area.

[0009] Furthermore, the plate body is made of a magnetic isolation material, and the magnetic isolation material is iron, nickel, cobalt or their compounds for magnetic isolation of the magnetic assembly by the plate body. The magnetic isolation material made of iron, nickel, cobalt or their compounds is used for magnetic isolation of the magnetic assembly by the plate body. Metals such as iron, nickel, and cobalt belong to ferromagnetic substances. When an external magnetic field acts on them, a reverse magnetic field will be induced. In the plate body, these magnetic isolation materials can effectively guide the direction of the magnetic field generated by the magnetic assembly, thereby largely guiding the magnetic field of the magnetic assembly on the side where the magnetic field is not needed to the required side, achieving efficient magnetic field isolation.

[0010] Furthermore, an epoxy layer is provided on the magnetic conductive layer, and the epoxy layer is located on the side of the magnetic conductive layer away from the magnetic assembly. The epoxy layer is used to protect the magnetic conductive layer. The epoxy layer usually has high hardness and wear resistance and can effectively resist external mechanical friction and scratching, thereby protecting the magnetic conductive layer from physical damage. The epoxy layer also has certain moisture-proof and moisture-resistant properties and can prevent moisture or other liquids from penetrating into the magnetic conductive layer, maintaining its dry and stable performance. The epoxy layer is tightly combined with the magnetic conductive layer, which can enhance the strength and stability of the entire structure.

[0011] Further, the thickness of the epoxy layer is 0.03 - 0.15 mm. The epoxy layer with a thickness of 0.03 - 0.15 mm can not only meet the basic protection requirements but also effectively control the material cost. With less material used, the overall cost is reduced. The epoxy layer has a small magnetic field impact on the magnetic conductive layer and can maintain the original magnetic properties of the magnetic conductive layer.

[0012] Further, the magnetic assembly is arranged on the housing via an external connecting member. The magnetic assembly and the housing are connected through the external connecting member, which can realize the modular design of the magnetic assembly. When the magnetic assembly needs to be replaced or repaired, the external connecting member can be rotated to easily disassemble and install the magnetic assembly without large-scale disassembly of the entire device, thus improving the convenience and efficiency of maintenance.

[0013] Further, the housing is formed by integral injection molding. Integral injection molding can ensure the tight connection and seamless gap between components, improving the integrity and stability of the entire structure. This makes the housing less likely to have component separation or loosening during use, enhancing its reliability and durability, avoiding material differences and bonding strength problems at the connection parts, thus improving the overall mechanical properties and enabling it to better withstand various external forces and environmental conditions.

[0014] The beneficial effects of the present utility model: Through the magnetic assembly and the magnetic isolation material housing, precise control and efficient utilization of the magnetic field are achieved. The magnetic assembly is composed of multiple-stage magnets, forming a complex and fine magnetic field distribution, effectively reducing magnetic leakage and reducing the magnetization interference to other devices. The housing is made of magnetic isolation material and tightly encloses to form the first groove to accommodate the magnetic assembly, not only effectively shielding the magnetic field from leaking but also improving the integration, stability and durability of the device. The combination of the magnetic conductive layer and the epoxy layer further enhances the magnetic field guiding and protection capabilities, ensuring the efficient utilization of magnetic field energy while protecting the internal structure from external damage. The modular design and the integrally injection-molded housing simplify the maintenance process, improve the production efficiency and device reliability. The overall design shows significant advantages in saving space, improving performance and reducing costs. Description of the Drawings

[0015] Figure 1 is one of the main structure schematic diagrams of the present utility model;

[0016] Figure 2 is the second of the main structure schematic diagrams of the present utility model;

[0017] Figure 3 is one of the magnetic assembly structure schematic diagrams of the present utility model;

[0018] Figure 4 is the second of the magnetic assembly structure schematic diagrams of the present utility model;

[0019] Figure 5Schematic diagram of the housing structure of the present utility model;

[0020] Figure 6 It is the third schematic diagram of the main structure of the present utility model.

[0021] Reference numerals include:

[0022] 1. Magnetic group; 2. Housing; 4. First groove; 11. First magnet; 12. Second magnet; 13. Third magnet; 14. Fourth magnet; 21. Plate body; 22. Magnetic conductive layer; 23. Second groove; 24. Elastic member; 25. Slide block; 26. Third groove; 221. Epoxy layer. Detailed implementation manners

[0023] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present utility model.

[0024] Please refer to Figures 1 to 5 As shown, a Halbach multi-side magnetic field direction shielding rare earth magnet of the present utility model includes a magnetic group 1 and a housing 2 used in cooperation with the magnetic group 1. The housing 2 includes a plurality of plate bodies 21 made of magnetic isolation material. By precisely shielding the magnetic field generated by the magnetic group 1 through the plate bodies 21 of the magnetic isolation material, directional control of the magnetic field can be achieved. A plurality of plate bodies 21 enclose a first groove 4 for accommodating the magnetic group 1, and a plurality of plate bodies 21 are used to shield the corresponding magnetic field of the magnetic group 1. The plate bodies 21 of the magnetic isolation material can effectively shield the magnetic field generated by the magnetic group 1, preventing magnetic field leakage or interference with other devices. A plurality of plate bodies 21 are closely enclosed to form the first groove 4, making the whole structure compact and firm. This compact structure design helps to save space, improve the integration of the device, and is also beneficial to improving the stability and durability of the device.

[0025] Specifically, the magnetic group 1 includes a first magnet 11, a second magnet 12 and a third magnet 13 arranged on the first magnet 11. The second magnet 12 and the third magnet 13 are respectively located on both sides of the first magnet 11. By arranging the second magnet 12 and the third magnet 13 on both sides of the first magnet 11 respectively, a more complex and precise magnetic field distribution can be formed. The second magnet 12 and the third magnet 13 are arranged on both sides of the first magnet 11, which can effectively reduce the leakage of the magnetic field at the edge of the magnet (i.e., magnetic leakage). Since the magnetic field distribution is more concentrated and controllable, it can also reduce the magnetization interference with other electronic components or devices, improving the stability and reliability of the overall system.

[0026] Specifically, the magnetic assembly 1 further includes a fourth magnet 14. The fourth magnet 14 is located on the side of the third magnet 13 away from the first magnet 11. The magnetic poles of the first magnet 11 and the fourth magnet 14 face in opposite directions. By adding the fourth magnet 14 and having its magnetic poles face in the opposite direction to those of the first magnet 11, the magnetic field intensity of the magnetic assembly 1 in a specific direction can be further enhanced, causing the magnetic field lines to be more concentrated on the target side, forming a stronger unilateral magnetic field. The fourth magnet 14 can further focus the magnetic field, reduce the diffusion of the magnetic field in non-target areas, and improve the utilization efficiency of the magnetic field.

[0027] Specifically, the magnetic poles of the second magnet 12 and the third magnet 13 face in opposite directions, and the magnetic pole orientation of the first magnet 11 is perpendicular to that of the second magnet 12 / third magnet 13. Due to the perpendicularity of the magnetic pole orientations, a more complex magnetic field distribution is formed inside the magnetic assembly 1, making the distribution of the magnetic field in three-dimensional space more diverse and capable of meeting more diverse application requirements. The perpendicular and opposite magnetic pole arrangements help reduce the leakage of the magnetic field at the edges of the magnets (i.e., magnetic leakage), because the mutual magnetic forces between the magnetic poles will guide the magnetic field lines to mainly flow along the inside of the magnets rather than diffuse into the external space.

[0028] Specifically, during the attraction between the flat plate and the keyboard, the plate body 21 conducts multi-sided shielding, enhancing the suction force between the flat plate and the keyboard contact surface, improving the accuracy of the attraction, and increasing the strength of the components. The thickness of the plate body 21 is 0.3 mm.

[0029] Specifically, a magnetic conduction layer 22 is provided on the plate body 21. The magnetic conduction layer 22 is located on the side of the plate body 21 away from the magnetic assembly 1. The magnetic conduction layer 22 has a high magnetic permeability and can guide the magnetic field lines to flow along its surface or inside, reducing the direct leakage of the magnetic field in the air. This guiding effect enables the magnetic field energy that might otherwise be dissipated to be better utilized, improving the utilization efficiency of the magnetic field. Through the guidance of the magnetic conduction layer 22, the magnetic field lines can pass through the target area more concentratedly, thereby forming a stronger magnetic field in a specific area.

[0030] Specifically, the plate body 21 is made of a magnetic isolation material. The magnetic isolation material is iron, nickel, cobalt, or their compounds for magnetically isolating the plate body 21 from the magnetic assembly 1. The magnetic isolation material made of iron, nickel, cobalt, or their compounds is used for magnetically isolating the plate body 21 from the magnetic assembly 1. Metals such as iron, nickel, and cobalt belong to ferromagnetic substances. When an external magnetic field acts on them, a reverse magnetic field will be induced. In the plate body 21, these magnetic isolation materials can effectively guide the direction of the magnetic field generated by the magnetic assembly, thereby guiding the magnetic field of the magnetic assembly on the side where the magnetic field is not needed to the required side to a large extent, achieving efficient magnetic field isolation.

[0031] Specifically, in this embodiment, the essence of magnetic field isolation is guidance, and magnetic isolation is only for the convenience of description.

[0032] Specifically, an epoxy layer 221 is provided on the magnetic conductive layer 22. The epoxy layer 221 is located on the side of the magnetic conductive layer 22 away from the magnetic assembly. The epoxy layer 221 is used to protect the magnetic conductive layer 22. The epoxy layer 221 usually has high hardness and wear resistance, and can effectively resist external mechanical friction and scratching, thereby protecting the magnetic conductive layer 22 from physical damage. The epoxy layer 221 also has certain moisture-proof and moisture-proof properties, which can prevent moisture or other liquids from penetrating into the magnetic conductive layer 22 and maintain its dry and stable performance. The epoxy layer 221 is tightly combined with the magnetic conductive layer 22, which can enhance the strength and stability of the entire structure.

[0033] Specifically, an anti-slip and shock-absorbing material layer is provided on the side of the plate body 21 close to the magnetic assembly. The anti-slip and shock-absorbing material layer is used to reduce the noise and wear generated when the magnetic assembly 1 moves or vibrates in the housing 2, and improve the stability of the magnetic assembly.

[0034] Specifically, the anti-slip and shock-absorbing material layer is made of silica gel.

[0035] Specifically, the material of the epoxy layer is epoxy resin.

[0036] Specifically, in this embodiment, isolating the magnetic field is essentially guiding, and magnetic isolation is only for the convenience of writing.

[0037] Specifically, the thickness of the epoxy layer 221 is 0.03 - 0.15 mm. The epoxy layer 221 with a thickness of 0.03 - 0.15 mm can not only meet the basic protection requirements, but also effectively control the material cost, use less material, thereby reducing the overall cost. The epoxy layer has little influence on the magnetic field of the magnetic conductive layer 221 and can maintain the original magnetic properties of the magnetic conductive layer.

[0038] Specifically, a second groove 23 is formed on the plate body 21, a third groove 26 is formed on the magnetic conductive layer 22, an elastic member 24 is accommodated in the second groove 23, the elastic member 24 is connected with a slider 25, the slider 25 is connected with the magnetic conductive layer 22 via the elastic member 24, the slider 25 is accommodated in the second groove 23, the slider 25 extends into the third groove 26 via the elastic member 24, the slider 25 is slidably arranged on the second groove 23 and the third groove 26, and the slider 25 realizes the limiting function of the magnetic conductive layer 22 on the plate body 21 via the contact plate body 21.

[0039] Specifically, in this embodiment, the slider 25 and the elastic member 24 are slidably arranged.

[0040] Specifically, the magnetic assembly 1 is arranged on the housing 2 via an external connecting member. The magnetic assembly 1 and the housing 2 are connected by the external connecting member, which can realize the modular design of the magnetic assembly 1. When the magnetic assembly 1 needs to be replaced or repaired, the external connecting member can be rotated to easily disassemble and install, without large-scale disassembly of the entire device, thereby improving the convenience and efficiency of maintenance.

[0041] Specifically, the housing 2 is formed by integral injection molding. Integral injection molding can ensure tight and seamless connections between components, improving the integrity and stability of the entire structure. This makes it less likely for components to separate or become loose during the use of the housing 2, enhancing its reliability and durability, avoiding material differences and bonding strength issues at the connection parts, thereby improving the overall mechanical properties and enabling it to better withstand various external forces and environmental conditions.

[0042] The above content is only the preferred embodiment of the present utility model. For those of ordinary skill in the art, based on the idea of the present utility model, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation on the present utility model.

Claims

1. A Halbach multi-side magnetic field direction shielding rare earth magnet, comprising a magnetic group (1) and a housing (2) used in cooperation with the magnetic group (1); characterized in that: The housing (2) includes a plurality of plate bodies (21) made of a magnetic isolation material. The plurality of plate bodies (21) enclose a first groove body (4) for accommodating the magnetic assembly (1), and the plurality of plate bodies (21) are used to shield the corresponding magnetic field of the magnetic assembly (1).

2. The Halbach multi-side magnetic field direction shielding rare earth magnet according to claim 1, wherein: The magnetic assembly (1) includes a first magnet (11), a second magnet (12) and a third magnet (13) arranged on the first magnet (11). The second magnet (12) and the third magnet (13) are respectively located on both sides of the first magnet (11).

3. A Halbach multi-side magnetic field direction shielding rare earth magnet according to claim 2, characterized in that: The magnetic assembly (1) further includes a fourth magnet (14). The fourth magnet (14) is located on the side of the third magnet (13) away from the first magnet (11), and the magnetic poles of the first magnet (11) and the fourth magnet (14) face in opposite directions.

4. A Halbach multi-side magnetic field direction shielding rare earth magnet according to claim 2, characterized in that: The magnetic poles of the second magnet (12) and the third magnet (13) face in opposite directions, and the magnetic pole orientation of the first magnet (11) is perpendicular to the magnetic pole orientation of the second magnet (12) / third magnet (13).

5. A Halbach array multi-side magnetic field direction shielding rare earth magnet according to claim 1, characterized in that: A magnetic conductive layer (22) is provided on the plate body (21), and the magnetic conductive layer (22) is located on the side of the plate body (21) away from the magnetic assembly (1).

6. A Halbach array multi-side magnetic field direction shielding rare earth magnet according to claim 1, characterized in that: The plate body (21) is made of a magnetic isolation material, and the magnetic isolation material is iron, nickel, cobalt or their compounds for magnetically isolating the plate body (21) from the magnetic assembly (1).

7. The Halbach multi-side magnetic field direction shielding rare earth magnet according to claim 5, characterized in that: An epoxy layer (221) is provided on the magnetic conductive layer (22), and the epoxy layer (221) is located on the side of the magnetic conductive layer (22) away from the magnetic assembly. The epoxy layer (221) is used to protect the magnetic conductive layer (22).

8. A Halbach multi-side magnetic field direction shielding rare earth magnet according to claim 7, characterized in that: The thickness of the epoxy layer (221) is 0.03 - 0.15 mm.

9. The Halbach multi-sided magnetic field direction shielding rare earth magnet according to claim 1, wherein: The magnetic assembly (1) is arranged on the housing (2) via an external connector.

10. A Halbach multi-sided magnetic field direction shielding rare earth magnet according to claim 1, characterized in that: The housing (2) is formed by integral injection molding.

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