A strong magnetic field magnetic component

Abstract

The present application discloses a strong magnetic field magnetic component, comprising a permanent magnet, a sleeve and a base. The permanent magnets include at least four, each of which is arranged in parallel and arranged in an array. The sleeve includes at least four corresponding permanent magnets, each of which has a fixing hole, and the fixing holes of each sleeve are respectively provided for each permanent magnet to be inserted and fixed. The base is provided for connection of each sleeve. In the strong magnetic field magnetic component of the present application, the permanent magnet is protected by the sleeve, and the sleeve is connected to the base. The sleeve made of metal has excellent ductility, which solves the problem of permanent magnet breakage. In the strong magnetic field magnetic component of the present application, when the permanent magnet is damaged, a single permanent magnet and the metal sleeve can be replaced, which saves the maintenance cost and time of the magnetic component and solves the problem of time-consuming and high-cost maintenance of the magnetic component. By optimizing the arrangement of the permanent magnet array, the overall magnetic performance is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic components, and in particular to a high magnetic field magnetic component. Background Art

[0002] The 1920s saw the invention of the permanent magnet aluminum nickel cobalt (Alnico), followed by the subsequent inventions of ferrite, 1:5 samarium cobalt (SmCo5), 2:17 samarium cobalt (Sm2Co17), and neodymium iron boron (Nd-Fe-B). This development significantly boosted the development of the magnetoelectric industry. Permanent magnets are now widely used in various sectors of the national economy, including high-speed rail, new energy vehicle motors, water pumps, sensors, space satellites, aerospace, national defense, white goods, consumer electronics, and medical devices. Summary of the Invention

[0003] The present application provides a strong magnetic field magnetic component, which can solve the problem of magnetic component scrapping caused by permanent magnet breakage.

[0004] Embodiments of the present application provide a high-magnetic-field magnetic assembly comprising a permanent magnet, a housing, and a base. The permanent magnets comprise at least four, parallel arrays. The housings comprise at least four, corresponding one-to-one to the permanent magnets. Each housing has a fixing hole for inserting and securing each permanent magnet. The base serves as a connection for the housings.

[0005] In some embodiments, the north poles of two adjacent permanent magnets are both arranged on a first side of each permanent magnet, and the south poles of two adjacent permanent magnets are both arranged on a second side of each permanent magnet opposite to the first side. Alternatively, the north poles of two adjacent permanent magnets are respectively arranged on the first side and the second side of each permanent magnet, and the south poles of two adjacent permanent magnets are respectively arranged on the second side and the first side of each permanent magnet.

[0006] In some embodiments, both ends of each permanent magnet in the magnetic pole arrangement direction are arranged flush.

[0007] In some embodiments, one end of each permanent magnet in the magnetic pole arrangement direction is respectively inserted into and fixed in the fixing hole of each sleeve, and the other end is arranged outside the fixing hole of each sleeve.

[0008] In some embodiments, each sleeve is detachably connected to the base.

[0009] In some embodiments, the base body has assembly holes, each assembly hole includes at least four holes corresponding to each sleeve body, and each sleeve body is inserted into and fixed in each assembly hole.

[0010] In some embodiments, one end of each sleeve in the axial direction of the fixing hole is respectively inserted into and fixed in each assembly hole, and the other end is arranged on the same side of the base.

[0011] In some embodiments, the outer peripheral wall of each sleeve body has a positioning step, and the positioning step of each sleeve body respectively contacts the outer peripheral surface of each assembly hole.

[0012] In some embodiments, the base is a plate-shaped structure, and the axis of each assembly hole is perpendicular to the base.

[0013] In some embodiments, both ends of each sleeve body in the axial direction of the fixing hole are flush.

[0014] According to an embodiment of the present application, a strong magnetic field magnetic component is provided, which includes a permanent magnet, a sleeve and a base. The permanent magnets include at least four, each of which is arranged in parallel and arranged in an array. The sleeve includes at least four corresponding permanent magnets, each of which has a fixing hole, and the fixing holes of each sleeve are respectively provided for each permanent magnet to be inserted and fixed. The base is provided for connection of each sleeve. In the strong magnetic field magnetic component of the present application, the permanent magnet is protected by the sleeve, and the sleeve is connected to the base. The sleeve made of metal has excellent ductility, which solves the problem of permanent magnet breakage. In the strong magnetic field magnetic component of the present application, when the permanent magnet is damaged, a single permanent magnet and the metal sleeve can be replaced, which saves the maintenance cost and time of the magnetic component and solves the problem of time-consuming and high cost of repairing the magnetic component. By optimizing the arrangement of the permanent magnet array, the overall magnetic performance is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of a high magnetic field magnetic component at a first angle in an embodiment of the present application;

[0017] Figure 2 Schematic diagram of the structure of a strong magnetic field magnetic component at a second angle in an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are only used to explain this application and are not intended to limit this application.

[0019] See Figure 1 、 2 An embodiment of the present application provides a strong magnetic field magnetic component 1, including a permanent magnet 10, a sleeve 11 and a base 12.

[0020] The permanent magnets 10 are used to achieve a strong magnetic field. The permanent magnets 10 may include at least 4, such as 16, 24, 32, 48, or 96. The shape of each permanent magnet 10 may be cylindrical, conical, rectangular, or square. Each permanent magnet 10 may be a neodymium iron boron permanent magnet, a samarium cobalt permanent magnet, an alnico permanent magnet, a ferrite, or other permanent magnet 10, preferably a neodymium iron boron permanent magnet. The surface of each permanent magnet 10 may have a coating, which may be one or a combination of nickel, nickel-copper-nickel, chromium, nickel-copper + epoxy composite coating, nickel-copper + Teflon composite coating, or nickel-copper + parylene composite coating.

[0021] The permanent magnets 10 are arranged in parallel and in an array.

[0022] Optionally, the N poles of two adjacent permanent magnets 10 are both arranged on the first side of each permanent magnet 10 (eg Figure 1 The upper side of Figure 2 The S poles of the two adjacent permanent magnets 10 are both arranged on the second side of each permanent magnet 10 opposite to the first side (such as Figure 1 The lower side of Figure 2 the front side of the image).

[0023] For example, Figure 1 As shown, the N poles of all permanent magnets 10 are arranged on the upper side, the S poles are arranged on the lower side, and are connected to the base 12. Alternatively, the S poles of all permanent magnets 10 are arranged on the upper side, the N poles are arranged on the lower side, and are connected to the base 12. Figure 2 As shown, the N poles of all permanent magnets 10 are arranged at the rear side, the S poles are arranged at the front side, and connected to the base 12. Alternatively, the S poles of all permanent magnets 10 are arranged at the rear side, the N poles are arranged at the front side, and connected to the base 12.

[0024] Alternatively, the N poles of two adjacent permanent magnets 10 are respectively arranged on the first side of each permanent magnet 10 (eg Figure 1 The upper side of Figure 2 the rear side) and the second side (e.g. Figure 1 The lower side of Figure 2 The S poles of the two adjacent permanent magnets 10 are respectively arranged on the second side of each permanent magnet 10 (such as Figure 1 The lower side of Figure 2 front side in) and the first side (as Figure 1 The upper side of Figure 2 the rear side of the center).

[0025] For example, Figure 1 As shown, when the N pole of one permanent magnet 10 is set on the upper side and the S pole is set on the lower side and connected to the base 12, the S pole of the adjacent permanent magnet 10 is set on the upper side and the N pole is set on the lower side and connected to the base 12. And when the S pole of one permanent magnet 10 is set on the upper side and the N pole is set on the lower side and connected to the base 12, the N pole of the adjacent permanent magnet 10 is set on the upper side and the S pole is set on the lower side and connected to the base 12. Figure 2 As shown, when the N pole of one permanent magnet 10 is set at the rear side and the S pole is set at the front side and connected to the base 12, the S pole of the adjacent permanent magnet 10 is set at the rear side and the N pole is set at the front side and connected to the base 12. And, when the S pole of one permanent magnet 10 is set at the rear side and the N pole is set at the front side and connected to the base 12, the N pole of the adjacent permanent magnet 10 is set at the rear side and the S pole is set at the front side and connected to the base 12.

[0026] Both ends of each permanent magnet 10 in the magnetic pole arrangement direction may be arranged flush.

[0027] The sleeve 11 is used to connect the permanent magnet 10 to the base 12. The sleeve 11 may include at least four sleeves 11 arranged one-to-one corresponding to each permanent magnet 10. Each sleeve 11 can be made of a metal material such as aluminum, stainless steel, stainless iron, copper, titanium, nickel, magnesium, niobium, molybdenum, tin, etc., preferably aluminum.

[0028] Each sleeve 11 has a fixing hole, which can be a blind hole or a through hole. The fixing holes of each sleeve 11 are respectively provided for the insertion and fixation of each permanent magnet 10. The method of fixing each permanent magnet 10 in the fixing hole of each sleeve 11 can be glued, riveted, or interference fit. Among them, one end of each permanent magnet 10 in the direction of magnetic pole arrangement can be respectively inserted and fixed in the fixing hole of each sleeve 11, and the other end is arranged outside the fixing hole of each sleeve 11.

[0029] Each sleeve body 11 is connected to the base body 12. Both ends of each sleeve body 11 in the axial direction of the fixing hole can be arranged flush.

[0030] Each sleeve 11 can be detachably connected to the base 12. The base 12 can have an assembly hole, and each assembly hole can include at least 4 corresponding to each sleeve 11, and the spacing between each assembly hole can be 9 mm or 18 mm. Each sleeve 11 is respectively inserted and fixed in each assembly hole. The way in which each sleeve 11 is fixed in the assembly hole can be to fix it with a screw 13 after the sleeve 11 is threaded, or to glue it, or to have an interference fit. Among them, one end of each sleeve 11 in the axial direction of the fixing hole can be respectively inserted and fixed in each assembly hole, and the other end can be arranged on the same side of the base 12. The outer peripheral wall of each sleeve 11 can have a positioning step, and the positioning step of each sleeve 11 can respectively conflict with the outer peripheral surface of each assembly hole.

[0031] The base 12 is used to support the various components. The base 12 can be made of a metal such as aluminum, stainless steel, stainless iron, copper, titanium, nickel, magnesium, niobium, molybdenum, or tin. The base 12 can be a plate-like structure, in which case the axes of the assembly holes can be perpendicular to the base 12.

[0032] The high magnetic field magnetic component 1 of the present application has the following beneficial effects:

[0033] 1. The permanent magnet 10 has poor toughness. If the permanent magnet 10 is directly connected to the base 12, the connection part is most susceptible to stress, and the permanent magnet 10 is very easy to break. In the high-magnetic field magnetic assembly 1 of the present application, the permanent magnet 10 is protected by the sleeve 11, which is connected to the base 12. The sleeve 11 is made of metal and has excellent ductility, which solves the problem of permanent magnet 10 breaking.

[0034] 2. The permanent magnet 10 is bonded to the base 12 with glue. If there are a large number of permanent magnets 10, damage to a single permanent magnet can render the entire assembly 1 useless. In the high-magnetic-field magnetic assembly 1 of the present application, when a permanent magnet 10 is damaged, the single permanent magnet 10 and the metal sleeve can be replaced. This saves maintenance cost and time for the magnetic assembly 1, solving the problem of time-consuming and high-cost maintenance of the magnetic assembly 1.

[0035] 3. By optimizing the arrangement of the permanent magnets 10, the overall magnetic performance is enhanced.

[0036] The embodiment of the present application further provides a method for manufacturing the high magnetic field magnetic component 1 in any of the above embodiments, comprising the following steps:

[0037] Step 1: Connect the permanent magnet 10 and the sleeve 11. The permanent magnet 10 is arranged according to the designed magnetic circuit.

[0038] In the above steps, the permanent magnet 10 and the sleeve 11 can be connected by riveting, gluing, interference fit or the like.

[0039] Step 2: Insert the sleeve 11 into the assembly hole of the metal plate, using special tooling and equipment to ensure verticality and flatness.

[0040] Step 3: Fix the sleeve 11 to obtain the strong magnetic field magnetic component 1.

[0041] In the above steps, the sleeve body 11 can be fixed by screws, glue, or a cover plate.

[0042] Specifically,

[0043] Example 1

[0044] (1) The D3.8*50 NdFeB permanent magnet 10 and the aluminum sleeve 11 are connected by riveting, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0045] (2) Insert the sleeve 11 into the assembly hole of the base 12 made of aluminum plate, and use special tooling and equipment to ensure that the verticality is 0.05 mm and the flatness is 0.05 mm.

[0046] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0047] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥5000Gs, and the qualified rate is ≥99%.

[0048] Example 2

[0049] (1) The D3.8*50 NdFeB permanent magnet 10 and the aluminum sleeve 11 are connected using a glue bonding process, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0050] (2) Insert the sleeve 11 into the assembly hole of the base 12 made of stainless steel plate, and use special tooling and equipment to ensure that the verticality is 0.05mm and the flatness is 0.05mm.

[0051] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0052] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥5000Gs, and the qualified rate is ≥99%.

[0053] Example 3

[0054] (1) The D3.8*50 NdFeB permanent magnet 10 and the aluminum sleeve 11 are connected using an interference fit process, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0055] (2) Insert the sleeve 11 into the assembly hole of the base 12 made of copper plate, and use special tooling and equipment to ensure that the verticality is 0.05mm and the flatness is 0.05mm.

[0056] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0057] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥5000Gs, and the qualified rate is ≥99%.

[0058] Example 4

[0059] (1) A D3.8*50 NdFeB permanent magnet 10 and a stainless steel sleeve 11 are connected by riveting, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0060] (2) Insert the sleeve 11 into the assembly hole of the base 12 made of aluminum plate, and use special tooling and equipment to ensure that the verticality is 0.05 mm and the flatness is 0.05 mm.

[0061] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0062] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥5000Gs, and the qualified rate is ≥99%.

[0063] Example 5

[0064] (1) The D3.8*50 samarium cobalt permanent magnet 10 and the copper sleeve 11 are connected by riveting, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0065] (2) Insert the sleeve 11 into the assembly hole of the base 12 made of aluminum plate, and use special tooling and equipment to ensure that the verticality is 0.05 mm and the flatness is 0.05 mm.

[0066] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0067] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥3800Gs, and the qualified rate is ≥99%.

[0068] Example 6

[0069] (1) A D3.8*50 AlNiCo permanent magnet 10 and a copper sleeve 11 are connected by riveting, and the permanent magnet 10 is arranged according to the designed magnetic circuit.

[0070] (2) Insert the sleeve 11 into the assembly hole of the aluminum plate-shaped base 12, using special tooling and equipment to ensure that the verticality is 0.05 mm and the flatness is 0.05 mm.

[0071] (3) Use screws 13 to tighten the sleeve 11 to obtain a strong magnetic field magnetic component 1.

[0072] After testing, the surface magnetism of the high magnetic field magnetic component 1 obtained in this embodiment is ≥1500Gs, and the qualified rate is ≥99%.

[0073] Comparative Example 1

[0074] (1) D3.8*67 NdFeB permanent magnets are arranged according to the designed magnetic circuit.

[0075] (2) Connect the NdFeB permanent magnet to the aluminum plate, and use special tooling and equipment to ensure the verticality is 0.05 mm and the flatness is 0.05 mm to obtain a magnetic assembly.

[0076] After testing, the surface magnetism of the magnetic assembly obtained in this comparative example is ≥5000Gs, and the qualified rate is ≥85%.

[0077] Comparative Example 2

[0078] (1) D3.8*50 samarium cobalt permanent magnets are arranged according to the designed magnetic circuit.

[0079] (2) The samarium cobalt permanent magnet is connected to the aluminum plate, and a special tooling and equipment are used to ensure the verticality is 0.05 mm and the flatness is 0.05 mm to obtain a magnetic assembly.

[0080] After testing, the surface magnetism of the magnetic assembly obtained in this comparative example is ≥3800Gs, and the qualified rate is ≥65%.

[0081] Comparative Example 3

[0082] (1) D3.8*50 samarium cobalt permanent magnets are arranged according to the designed magnetic circuit.

[0083] (2) The samarium cobalt permanent magnet is connected to the aluminum plate, and a special tooling and equipment are used to ensure the verticality is 0.05 mm and the flatness is 0.05 mm to obtain a magnetic assembly.

[0084] After testing, the surface magnetism of the magnetic assembly obtained in this comparative example is ≥3800Gs, and the qualified rate is ≥80%.

[0085] It can be seen from the qualified rates of the above embodiments and comparative examples that the qualified rate of the magnetic assembly using the sleeve 11 can reach 99%, while the qualified rate of the magnetic assembly without the sleeve 11 is very low. The reason is that once one of the permanent magnets is damaged, the entire magnetic assembly will be scrapped.

[0086] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A strong magnetic field magnetic component, characterized in that: include: Permanent magnets, including at least four, each of which is disposed in parallel and arranged in an array; a sleeve, comprising at least four sleeves corresponding to the permanent magnets, each sleeve having a fixing hole, wherein the fixing hole of each sleeve is respectively used for inserting and fixing the permanent magnets; and A base body for connecting the sleeves; Wherein, both ends of each permanent magnet in the direction of magnetic pole arrangement are arranged flush; One end of each permanent magnet in the direction of magnetic pole arrangement is respectively inserted into and fixed in the fixing hole of each sleeve, and the other end is arranged outside the fixing hole of each sleeve; Each of the sleeves is detachably connected to the base; Both ends of each sleeve in the axial direction of the fixing hole are flush with each other; The N poles of two adjacent permanent magnets are respectively arranged on the first side and the second side of each permanent magnet, and the S poles of two adjacent permanent magnets are respectively arranged on the second side and the first side of each permanent magnet; The base body has assembly holes, and each of the assembly holes includes at least four corresponding to each of the sleeves; Each of the sleeves is respectively inserted into and fixed in each of the assembly holes; One end of each sleeve in the axial direction of the fixing hole is respectively inserted into and fixed in each assembly hole, and the other end is arranged on the same side of the base; The outer peripheral wall of each sleeve body has a positioning step, and the positioning step of each sleeve body respectively conflicts with the outer peripheral surface of each assembly hole; The base is a plate-like structure, and the axis of each assembly hole is perpendicular to the base; The permanent magnets are arranged in a matrix; The sleeves are fixed in the assembly holes by using screws after threads are machined on the sleeves.

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