A high-performance sintered neodymium-iron-boron magnet

Abstract

The utility model relates to the technical field of neodymium iron boron magnet provides a kind of high-performance sintered neodymium iron boron magnet, including fixed ring and magnet body, the bottom end of the fixed ring is fixed with magnet body, the outside of the magnet body is provided with protective structure.The utility model is provided with fixed structure, under the action of positioning column and positioning groove, the midline of first protective shell and second protective shell is collinear, under the action of clamping block and clamping groove, first protective shell and second protective shell are mutually fixed or disassembled, when first protective shell and second protective shell are mutually fixed, under the action of rubber pad, the hard contact of magnet body and first protective shell and second protective shell is effectively buffered, under the action of first protective shell and second protective shell, avoid the structure damage of magnet body when not using due to collision, abrasion, realize the function that the device is convenient to anti-collision, to improve the applicability of the high-performance sintered neodymium iron boron magnet when using.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron magnet technology, and in particular to a high-performance sintered neodymium iron boron magnet. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets are intermetallic compounds composed of neodymium, iron, and boron. NdFeB magnets have extremely high magnetic energy product and coercivity, making them the most powerful permanent magnet materials currently available. There are many types of NdFeB magnets, and high-performance sintered NdFeB magnets are an important part of them.

[0003] Existing high-performance sintered NdFeB magnets have limited applicability in use due to their inconvenience in fixing and the difficulty in preventing structural damage caused by collisions and wear. Utility Model Content

[0004] The purpose of this invention is to provide a high-performance sintered NdFeB magnet to solve the problem that existing high-performance sintered NdFeB magnets are inconvenient to fix.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-performance sintered NdFeB magnet, comprising a fixing ring and a magnet body;

[0006] The bottom end of the fixing ring is fixed with a magnet body, and a protective structure is provided on the outside of the magnet body;

[0007] A fixing structure is provided on the outside of the protective structure;

[0008] The fixing structure includes a first protective shell disposed on one side of the protective structure, and a second protective shell disposed on the other side of the protective structure. Positioning grooves are provided at both ends of one side of the second protective shell, and positioning posts are provided inside the positioning grooves.

[0009] When using this device, the fixed structure facilitates collision prevention, thereby improving the applicability of the high-performance sintered NdFeB magnet in use; the protective structure facilitates protection, thereby extending the service life of the high-performance sintered NdFeB magnet.

[0010] Preferably, the interior of the second protective shell on one side of the positioning groove is provided with a snap-fit ​​groove, the interior of the snap-fit ​​groove is provided with a snap-fit ​​block, and the interior of the snap-fit ​​block is provided with a reserved groove.

[0011] Preferably, rubber pads are fixed to the inner sides of both the first and second protective shells. The positioning posts and positioning grooves ensure that the centerlines of the first and second protective shells are collinear, and the snap-fit ​​blocks and snap-fit ​​grooves allow the first and second protective shells to be fixed or disassembled.

[0012] Preferably, the positioning post and the second protective shell form a sliding structure through a positioning groove, and one end of the positioning post extends to the outside of the second protective shell and is fixedly connected to one side of the first protective shell. When the first and second protective shells are fixed to each other, the rubber pad effectively buffers the hard contact between the magnet body and the first and second protective shells, and the first and second protective shells prevent structural damage to the magnet body due to collision and wear when not in use.

[0013] Preferably, the snap-fit ​​block and the second protective shell form a snap-fit ​​structure through snap-fit ​​grooves, and one end of the snap-fit ​​block extends to the outside of the second protective shell and is fixedly connected to one side of the first protective shell.

[0014] Preferably, the protective structure includes a protective layer, a high-temperature resistant coating, and a corrosion-resistant coating. The protective layer is fixed to the outside of the magnet body, the high-temperature resistant coating is disposed on the outside of the protective layer, and the corrosion-resistant coating is disposed on the outside of the high-temperature resistant coating. Under the action of the protective layer, a continuous and dense metal film can be formed on the surface of the magnet body, thereby blocking the contact between external water vapor, oxygen, and corrosive media and the magnet body, fundamentally inhibiting oxidation and hydrogen embrittlement reactions, and thus extending the service life of the magnet body.

[0015] Preferably, the protective layer is actually an electroplated layer, and the corrosion-resistant coating is actually an epoxy resin coating. Under the action of the high-temperature resistant coating, its excellent thermal barrier properties can isolate the magnet body and the protective layer from high temperatures, reducing the conduction of external high temperatures into the magnet body. The corrosion-resistant coating possesses excellent resistance to acids, alkalis, organic solvents, and ultraviolet aging, protecting the outermost layer from the erosion of complex environments and further extending the overall protective lifespan.

[0016] The present invention provides a high-performance sintered NdFeB magnet, the advantages of which are:

[0017] By setting a fixed structure, the center lines of the first and second protective shells are collinear under the action of the positioning column and positioning groove. Under the action of the snap-fit ​​block and snap-fit ​​groove, the first and second protective shells can be fixed or disassembled. When the first and second protective shells are fixed together, the hard contact between the magnet body and the first and second protective shells is effectively buffered by the action of the rubber pad. Under the action of the first and second protective shells, the magnet body is prevented from being damaged by collision and wear when not in use. The device realizes the function of easy anti-collision, thereby improving the applicability of the high-performance sintered NdFeB magnet in use.

[0018] By incorporating a protective structure, a continuous and dense metal film can be formed on the surface of the magnet body under the action of the protective layer. This blocks the contact between external moisture, oxygen, and corrosive media and the magnet body, fundamentally inhibiting oxidation and hydrogen embrittlement reactions, thereby extending the service life of the magnet body. Under the action of the high-temperature resistant coating, its excellent thermal barrier properties can isolate the magnet body and the protective layer from high temperature damage, reducing the conduction of external high temperature into the magnet body. The corrosion-resistant coating has excellent resistance to acids, alkalis, organic solvents, and ultraviolet aging, and can resist the erosion of complex environments on the outermost side, further extending the overall protective life. This device achieves the function of convenient protection, thereby extending the service life of this high-performance sintered NdFeB magnet during use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the protective structure of this utility model from a side cross-section.

[0022] Figure 4 This is a top-view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0024] The reference numerals in the figure are as follows: 1. Fixing ring; 2. Fixing structure; 201. First protective shell; 202. Second protective shell; 203. Positioning groove; 204. Positioning post; 205. Snap-fit ​​block; 206. Reserved groove; 207. Snap-fit ​​groove; 3. Magnet body; 4. Protective structure; 401. Protective layer; 402. High temperature resistant coating; 403. Corrosion resistant coating. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5This utility model provides a high-performance sintered NdFeB magnet, including a fixing ring 1 and a magnet body 3. The magnet body 3 is fixed to the bottom end of the fixing ring 1. A protective structure 4 is provided on the outside of the magnet body 3. The protective structure 4 includes a protective layer 401, a high-temperature resistant coating 402, and a corrosion-resistant coating 403. The protective layer 401 is fixed to the outside of the magnet body 3. The high-temperature resistant coating 402 is provided on the outside of the protective layer 401. The corrosion-resistant coating 403 is provided on the outside of the high-temperature resistant coating 402. The protective layer 401 is actually an electroplated layer, and the corrosion-resistant coating 403 is actually an epoxy resin coating.

[0027] Reference Figure 2 and Figure 3 As shown, the protective layer 401 is actually an electroplated layer. Under the action of the protective layer 401, a continuous and dense metal film can be formed on the surface of the magnet body 3, thereby blocking the contact between external water vapor, oxygen, and corrosive media and the magnet body 3, fundamentally inhibiting oxidation and hydrogen embrittlement reactions, and thus extending the service life of the magnet body 3. Under the action of the high temperature resistant coating 402, through its excellent thermal barrier properties, it can isolate the high temperature from damaging the magnet body 3 and the protective layer 401, and reduce the conduction of external high temperature to the interior of the magnet body 3. Under the action of the corrosion resistant coating 403, which is actually an epoxy resin coating, it has excellent resistance to acids and alkalis, organic solvents, and ultraviolet aging. It can resist the corrosion of complex environments on the outermost side, further extending the overall protection life, thereby protecting the original high magnetic properties of the magnet body 3 from decay.

[0028] A fixing structure 2 is provided on the outer side of the protective structure 4. The fixing structure 2 includes a first protective shell 201 provided on one side of the protective structure 4 and a second protective shell 202 provided on the other side of the protective structure 4. Positioning grooves 203 are provided at both ends on one side of the second protective shell 202. Positioning posts 204 are provided inside the positioning grooves 203. A snap-fit ​​groove 207 is provided inside the second protective shell 202 on one side of the positioning groove 203. A snap-fit ​​block 205 is provided inside the snap-fit ​​groove 207. A pre-set... The groove 206, the inner sides of the first protective shell 201 and the second protective shell 202 are all fixed with rubber pads, the positioning post 204 and the second protective shell 202 form a sliding structure through the positioning groove 203, one end of the positioning post 204 extends to the outside of the second protective shell 202 and is fixedly connected to one side of the first protective shell 201, the snap-fit ​​block 205 and the second protective shell 202 form a snap-fit ​​structure through the snap-fit ​​groove 207, one end of the snap-fit ​​block 205 extends to the outside of the second protective shell 202 and is fixedly connected to one side of the first protective shell 201.

[0029] Reference Figure 4 and Figure 5As shown, the first protective shell 201 and the second protective shell 202 are moved, causing the positioning post 204 to move into the interior of the positioning groove 203. This pushes the first protective shell 201 and the second protective shell 202, and under the action of the reserved groove 206, the first protective shell 201 moves the locking block 205 into the interior of the locking groove 207, thereby fixing the first protective shell 201 and the second protective shell 202 together. Under the action of the rubber pad, the hard contact between the magnet body 3 and the first protective shell 201 and the second protective shell 202 is effectively buffered. Under the action of the first protective shell 201 and the second protective shell 202, the structure of the magnet body 3 is prevented from being damaged by collision and wear when not in use. The first protective shell 201 and the second protective shell 202 are moved in the opposite direction, causing the locking block 205 to move to the outside of the locking groove 207, thereby separating the first protective shell 201 and the second protective shell 202 from each other.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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.

Claims

1. A high-performance sintered NdFeB magnet, comprising a fixing ring (1) and a magnet body (3); Its features are: The bottom end of the fixing ring (1) is fixed with a magnet body (3), and a protective structure (4) is provided on the outside of the magnet body (3); A fixing structure (2) is provided on the outside of the protective structure (4); The fixing structure (2) includes a first protective shell (201) disposed on one side of the protective structure (4), and a second protective shell (202) disposed on the other side of the protective structure (4). The second protective shell (202) has positioning grooves (203) at both ends on one side of its interior, and positioning posts (204) are disposed inside the positioning grooves (203).

2. The high-performance sintered NdFeB magnet according to claim 1, characterized in that: The second protective shell (202) on one side of the positioning groove (203) is provided with a snap-fit ​​groove (207), and the snap-fit ​​groove (207) is provided with a snap-fit ​​block (205), and the snap-fit ​​block (205) is provided with a reserved groove (206).

3. A high-performance sintered NdFeB magnet according to claim 1, characterized in that: Rubber pads are fixed to the inner sides of both the first protective shell (201) and the second protective shell (202).

4. A high-performance sintered NdFeB magnet according to claim 1, characterized in that: The positioning post (204) and the second protective shell (202) form a sliding structure through the positioning groove (203). One end of the positioning post (204) extends to the outside of the second protective shell (202) and is fixedly connected to one side of the first protective shell (201).

5. A high-performance sintered NdFeB magnet according to claim 2, characterized in that: The snap-fit ​​block (205) and the second protective shell (202) form a snap-fit ​​structure through the snap-fit ​​groove (207). One end of the snap-fit ​​block (205) extends to the outside of the second protective shell (202) and is fixedly connected to one side of the first protective shell (201).

6. A high-performance sintered NdFeB magnet according to claim 1, characterized in that: The protective structure (4) includes a protective layer (401), a high-temperature resistant coating (402), and a corrosion-resistant coating (403). The protective layer (401) is fixed to the outside of the magnet body (3). The outside of the protective layer (401) is provided with a high-temperature resistant coating (402), and the outside of the high-temperature resistant coating (402) is provided with a corrosion-resistant coating (403).

7. A high-performance sintered NdFeB magnet according to claim 6, characterized in that: The protective layer (401) is actually an electroplated layer, and the corrosion-resistant coating (403) is actually an epoxy resin coating.

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