Magnetic leakage prevention high-suction double-layer Halbach magnetic assembly

Abstract

The utility model discloses a double-layer Halbach magnetic assembly with magnetic leakage prevention and high suction. The double-layer Halbach magnetic assembly comprises a first array and a second array, the first array and the second array are linearly arranged into an upper row and a lower row in the length direction, and the first array abuts against the second array. The first array comprises three first single magnets which are linearly arranged along the length direction, and the magnetizing directions of the first single magnets of the first array are horizontally leftward, vertically upward and horizontally rightward in sequence from left to right; the second array comprises a first combination, the first combination comprises five second single magnets which are linearly arranged in the length direction, and the magnetizing directions of the second single magnets of the first combination are vertically downward, horizontally leftward, vertically upward, horizontally rightward and vertically downward in sequence from left to right. Due to the special double-layer arrangement of the first single magnet and the second single magnet, the magnetic flux leakage at the two ends is avoided, and the magnetic attraction force is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of magnetic assemblies, in particular to a double-layer Halbach magnetic assembly with high magnetic attraction and magnetic leakage prevention. BACKGROUND

[0002] With the increasing pursuit of miniaturization and delicacy of 3C electronic products, the market has higher demands on the design of magnets, that is, to ensure greater magnetic attraction in a limited volume. Under this background, the Halbach array magnetic assembly has become a good solution because it can generate the maximum magnetic field with the least magnets. However, as shown in the prior art, the existing Halbach array magnetic assembly has a significant problem of magnetic leakage at both ends. Figure 2

[0003] Most of the prior art uses alloy and other magnetic materials to make a shielding cover to tightly wrap the magnetic source. These carefully selected magnetic materials have a strong attraction to the magnetic field. They can cleverly attract the magnetic energy that may leak back into the shielding cover, thereby reducing the magnetic leakage phenomenon. However, this solution increases the volume of the magnetic assembly, which goes against the original design of miniaturization and delicacy.

[0004] Therefore, the present applicant intends to provide a double-layer Halbach magnetic assembly with high magnetic attraction and magnetic leakage prevention to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a double-layer Halbach magnetic assembly with high magnetic attraction and magnetic leakage prevention, which prevents magnetic leakage at both ends and has strong magnetic attraction.

[0006] To achieve the above purpose, the solution of the utility model is as follows: a double-layer Halbach magnetic assembly with high magnetic attraction and magnetic leakage prevention, comprising a first array and a second array.

[0007] The first array and the second array are arranged in a straight line in the length direction into two rows, and the first array abuts against the second array.

[0008] The first array comprises three first single magnets arranged in a straight line in the length direction, and the magnetization directions of the first single magnets of the first array are horizontal left, vertical up and horizontal right from left to right.

[0009] The second array comprises a first combination, and the first combination comprises five second single magnets arranged in a straight line in the length direction, and the magnetization directions of the second single magnets of the first combination are vertical down, horizontal left, vertical up, horizontal right and vertical down from left to right.

[0010] ​Further, the second array further comprises at least one second combination, the right end of the first combination abuts against the left end of the second combination, the first combination and the second combination are arranged in a row in a linear type along the length direction, and the second combination comprises four second single magnets arranged in a linear type along the length direction, and the magnetization directions of the second single magnets of the second combination are horizontal left, vertical up, horizontal right and vertical down in sequence from left to right.

[0011] Further, the length of the first array is equal to the length of the second array.

[0012] Further, the first single magnet and the second single magnet are both cuboids, and the height of the first single magnet is equal to the height of the second single magnet.

[0013] Further, the first single magnet and the second single magnet are both neodymium-iron-boron magnets.

[0014] After the above scheme is adopted, the gain effect of the utility model lies in that:

[0015] The first array and the second array are arranged in two rows in a linear type along the length direction, and the first array abuts against the second array; the first array comprises three first single magnets arranged in a linear type along the length direction, and the magnetization directions of the first single magnets of the first array are horizontal left, vertical up and horizontal right in sequence from left to right; the second array comprises a first combination, the first combination comprises five second single magnets arranged in a linear type along the length direction, and the magnetization directions of the second single magnets of the first combination are vertical down, horizontal left, vertical up, horizontal right and vertical down in sequence from left to right, and the special double-layer arrangement of the first single magnet and the second single magnet enables the utility model to not leak magnetic force at both ends and improve the magnetic attraction force. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a two-dimensional structure schematic view of an existing Halbach magnetic assembly;

[0017] Figure 2 It is a 2D simulation field strength diagram of an existing Halbach magnetic assembly;

[0018] Figure 3 It is a two-dimensional structure schematic view of an embodiment of the utility model;

[0019] Figure 4 It is a 2D simulation field strength diagram of an embodiment of the utility model;

[0020] Figure 5 It is a two-dimensional structure schematic view of another embodiment of the utility model;

[0021] Figure 6 It is a 2D simulation field strength diagram of another embodiment of the utility model.

[0022] Explanation of reference numerals:

[0023] 1. first array; 11. first single magnet;

[0024] 2. second array; 21. first combination; 22. second combination; 23. second single magnet;

[0025] 4. object to be attracted. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0027] In the claims, the description and the above drawings of the present application, the terms "first", "second", "third" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance. Meanwhile, the left, right, up, down and other directions involved in the present embodiment are only used as a reference for one direction, and do not represent the direction in actual application.

[0028] In the present application, the arrow direction on the single magnet, the first single magnet 11 and the second single magnet 23 represents the magnetic pole direction.

[0029] Referring to Figure 1 , it is a two-dimensional structure schematic diagram of the existing Halbach magnetic assembly, which includes five single magnets arranged in a linear type along the length direction, and the magnetization directions of the five single magnets are vertical downward, horizontal left, vertical upward and horizontal right from left to right. As shown in Figure 2 , the magnetic field line distribution obtained by using Maxwell simulation for the existing Halbach magnetic assembly, the existing Halbach magnetic assembly has magnetic leakage at both ends, and the maximum value of the field strength is A=9.3×10 -3 Wb / m, which can generate a magnetic attraction force of 9757N on the object to be attracted 4.

[0030] The present application provides a double-layer Halbach magnetic assembly with magnetic leakage prevention and high magnetic attraction force, and the size of the embodiment is the same as that of the existing Halbach magnetic assembly. Referring to Figure 3 , it includes a first array 1 and a second array 2; the first array 1 and the second array 2 are arranged in two rows in a linear type along the length direction, and the first array 1 abuts against the second array 2; the first array 1 includes three first single magnets 11 arranged in a linear type along the length direction, and the magnetization directions of the first single magnets 11 of the first array 1 are horizontal left, vertical upward and horizontal right from left to right; the second array 2 includes a first combination 21, and the first combination 21 includes five second single magnets 23 arranged in a linear type along the length direction, and the magnetization directions of the second single magnets 23 of the first combination 21 are vertical downward, horizontal left, vertical upward, horizontal right and vertical downward from left to right. As shown in Figure 3 andFigure 4 As shown, the size of the embodiment of the utility model is the same as the size of the existing Halbach magnetic assembly, the effect produced by the utility model is better under the condition of guaranteeing the original volume, the end leakage phenomenon is weakened, the maximum value of the field strength is A=1.06*10 -2 Wb / m, the magnetic attraction force of 10023N can be generated on the object 4, which is far better than the existing Halbach magnetic assembly.

[0031] Another embodiment of the double-layer Halbach magnetic assembly with the magnetic leakage prevention and high magnetic attraction force is provided by the utility model, referring to Figure 4 , comprising a first array 1 and a second array 2; the first array 1 and the second array 2 are arranged in a linear type into two rows in the length direction, the first array 1 abuts against the second array 2; the first array 1 comprises three first single magnets 11 arranged in a linear type in the length direction, the magnetization directions of the first single magnets 11 of the first array 1 are horizontal left, vertical up and horizontal right from left to right in sequence; the second array 2 comprises a first combination 21 and a second combination 22, the right end of the first combination 21 abuts against the left end of the second combination 22, the first combination 21 and the second combination 22 are arranged in a linear type into a row in the length direction, the first combination 21 comprises five second single magnets 23 arranged in a linear type in the length direction, the magnetization directions of the second single magnets 23 of the first combination 21 are vertical down, horizontal left, vertical up, horizontal right and vertical down from left to right in sequence; the second combination 22 comprises four second single magnets 23 arranged in a linear type in the length direction, the magnetization directions of the second single magnets 23 of the second combination 22 are horizontal left, vertical up, horizontal right and vertical down from left to right in sequence. As shown, Figure 5 The end leakage phenomenon is weakened, and the maximum value of the field strength is A=1.31*10 -2 Wb / m. The number of the second combination 22 is at least one, the double-layer Halbach magnetic assembly comprising one second combination is exemplified above, and the number of the second combination 22 is not limited.

[0032] Further, the length of the first array 1 is equal to the length of the second array 2.

[0033] Preferably, the first single magnet 11 and the second single magnet 23 are both cuboids, and the height of the first single magnet 11 is equal to the height of the second single magnet 23.

[0034] Specifically, the first single magnet 11 and the second single magnet 23 are both neodymium-iron-boron magnets.

[0035] The above is only the preferred embodiment of the utility model, and is not a limitation on the design of the case, and any equivalent changes made according to the key design of the case fall within the protection scope of the case.

Claims

1. A double-layer Halbach magnetic assembly with high magnetic flux and leakage suppression, characterized in that: The first array and the second array are arranged in a linear manner along a length direction in two rows, and the first array is arranged against the second array. The first array comprises three first single magnets arranged in a linear manner along the length direction, and the magnetization directions of the first single magnets of the first array are horizontal left, vertical up and horizontal right from left to right. The second array comprises a first combination, and the first combination comprises five second single magnets arranged in a linear manner along the length direction, and the magnetization directions of the second single magnets of the first combination are vertical down, horizontal left, vertical up, horizontal right and vertical down from left to right. The second array further comprises at least one second combination, the right end of the first combination is arranged against the left end of the second combination, the first combination and the second combination are arranged in a linear manner along the length direction in one row, and the second combination comprises four second single magnets arranged in a linear manner along the length direction, and the magnetization directions of the second single magnets of the second combination are horizontal left, vertical up, horizontal right and vertical down from left to right.

2. A double Halbach magnetic assembly with a high magnetic flux return according to claim 1, characterized in that: The length of the first array is equal to the length of the second array.

3. A double Halbach magnetic assembly with flux leakage prevention and high magnetic force according to claim 1 or 2, characterized in that: The first single magnets and the second single magnets are cuboids, and the height of the first single magnets is equal to the height of the second single magnets.

4. A double Halbach magnetic assembly with flux leakage prevention and high magnetic force according to claim 1 or 2, characterized in that: The first single magnets and the second single magnets are neodymium-iron-boron magnets.

5. A double Halbach magnetic assembly with flux leakage prevention and high magnetic force according to claim 1 or 2, characterized in that: ​

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