WO2003075292A1 - Aimant permanent composite - Google Patents

Aimant permanent composite Download PDF

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Publication number
WO2003075292A1
WO2003075292A1 PCT/CN2002/000134 CN0200134W WO03075292A1 WO 2003075292 A1 WO2003075292 A1 WO 2003075292A1 CN 0200134 W CN0200134 W CN 0200134W WO 03075292 A1 WO03075292 A1 WO 03075292A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
superimposed
permanent magnets
same
magnetic field
Prior art date
Application number
PCT/CN2002/000134
Other languages
English (en)
Chinese (zh)
Inventor
Kyung O Gu
Original Assignee
Kyung O Gu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyung O Gu filed Critical Kyung O Gu
Priority to PCT/CN2002/000134 priority Critical patent/WO2003075292A1/fr
Priority to AU2002235708A priority patent/AU2002235708A1/en
Publication of WO2003075292A1 publication Critical patent/WO2003075292A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM

Definitions

  • the present invention relates to a permanent magnet, and more particularly, to a superimposed permanent magnet in which a plurality of permanent magnets processed into a predetermined shape are overlapped in a prescribed manner so that the magnetic force lines are distributed asymmetrically in all directions.
  • the application of rare earth elements in magnetic alloys has greatly improved the magnetic strength of permanent magnets.
  • its magnetic force is more than ten times that of ordinary magnets, thereby greatly promoting the application of permanent magnets in various technical fields.
  • the magnetic field lines are distributed in all directions after being manufactured by the method in the prior art. Completely symmetrical.
  • the magnetic force of a permanent magnet can be used to move an object subjected to the magnetic force, for example, to make a linear motion or a rotational motion.
  • a permanent magnet Take the hexahedron permanent magnet as an example, as shown in the figure
  • the object of the present invention is to provide a novel, asymmetrical distribution of magnetic field lines in all directions, or all of which are oriented in the same direction, which can make full use of the magnetic performance of permanent magnets, that is, the distance between the permanent magnets and the relative distance Overlapping permanent magnets with driving force.
  • the present invention also provides a method for manufacturing such a superimposed permanent magnet.
  • the superimposed permanent magnet of the present invention has a structure in which two or more permanent magnets are sequentially overlapped, and each of the aforementioned permanent magnets has a predetermined complementary shape in which a part of them can overlap each other.
  • Each adjacent two overlapping permanent magnets are connected at a position starting from a line of symmetry in the direction of distribution of their magnetic field lines, and the overlapping permanent magnets of adjacent blocks are connected side by side with the same polarity parts so that the overlapping permanent magnets
  • the magnetic lines of force in different directions are asymmetric, or all magnetic lines of force are oriented in the same direction.
  • the magnetic field lines of the present invention have asymmetrically distributed overlapping permanent magnets in all directions
  • the manufacturing method of iron includes the use of conventional processes such as casting or pressure processing, press forming, and magnetization to make two or more permanent magnets. It is also characterized in that
  • the step of cutting and connecting the permanent magnets that are connected together, and the overlapping formula is such that the positions where two adjacent two overlapping magnets are connected start from the line of symmetry in which the magnetic lines of force are distributed in all directions, and the adjacent two Blocks of overlapping permanent magnets are arranged side by side with the same polarity: ground connected in-together '] BRIEF DESCRIPTION
  • FIG. 1 is a schematic diagram illustrating a state in which two ordinary permanent magnets attract or repel each other;
  • FIG. 2 is a schematic diagram illustrating a state in which two ordinary permanent magnets can rely on their own repulsive force for longitudinal relative movement;
  • FIG. 3 is a schematic perspective view of an embodiment of a hexahedron superimposed permanent magnet according to the present invention
  • FIG. 4 is a schematic perspective view of another embodiment of the hexahedron superimposed permanent magnet of the present invention.
  • FIG. 5 is a schematic diagram of asymmetrical distribution of magnetic field lines according to another embodiment of the hexahedron superimposed permanent magnet
  • 6a, 6b, and 6c are exploded views of an embodiment of the disc-shaped superimposed permanent magnet of the present invention.
  • FIG. 7a is a schematic plan view of an embodiment of a disc-shaped superimposed permanent magnet with a hole according to the present invention.
  • FIG. 7b is a schematic plan view of another embodiment of a disc-shaped overlapping permanent magnet with a hole according to the present invention.
  • Fig. 7c is a sectional view taken along line 7c-7c in Fig. 7b;
  • FIG. 8a is a schematic plan view of an embodiment of a rectangular overlapping permanent magnet with a hole according to the present invention.
  • FIG. 8b is a perspective view of a component part of the square overlapping permanent magnet with a hole in FIG. 8a according to the present invention.
  • Fig. 8c is another embodiment of the rectangular superimposed permanent magnet with holes according to the present invention Example plan view
  • FIG. 8d is a perspective view of a component of the square-stacked permanent magnet with a hole in FIG. 8c according to the present invention.
  • FIG. 9a is a schematic plan view of an embodiment of a trapezoidal superimposed permanent magnetic 'iron with a hole according to the present invention.
  • 9b is a schematic plan view of another embodiment of a trapezoidal superimposed permanent magnet with a hole according to the present invention.
  • FIG. 10a is a schematic plan view of an embodiment of a hollow triangular overlapping permanent magnet according to the present invention.
  • FIG. 10b is a schematic plan view of another embodiment of a triangular overlapping permanent magnet with a hole according to the present invention.
  • FIG. 3 shows an elongated superimposed permanent magnet Z l composed of four hexahedron permanent magnets M l, M2, M3, and M4.
  • the four permanent magnets M l, M2, M3, and M4 are all B in width and height, and the total length is 2B.
  • the manufacturing method is conventional processes such as casting or pressure processing and pressing, and magnetization in the prior art. Then, using the following steps, the four permanent magnets are combined into a stacked permanent magnet by cutting and bonding.
  • a right-angled triangular block of the same polarity on the right side of M 1 is cut downward at an angle of 45 degrees; then, from the second permanent magnet M 2
  • the magnetic lines of force on the lower surface of the magnet start in a symmetrical line that is distributed in all directions.
  • Symmetrical left-right lower triangular block and then glue the left side of M2 to the notch on the right side of the first permanent magnet M l.
  • the upper right-angled square block of the same polarity on the right side of M2 is cut down at an angle of 45 degrees.
  • the shape is symmetrical to the lower right-angled triangular block on the left side, and then the left side of M3 is bonded to the incision on the right side of the second permanent magnet M2.
  • connection step may use an adhesive, or may be connected by various physical or chemical methods.
  • the polarity of the upper part of the superimposed permanent magnet assembled through this series of steps has a length of 4B on the total length of 5B and the polarity is N, and the polarity of only one B is S ;
  • the polarity of S with 4B on the total length of 5B is S, and the polarity of only one B is N. Therefore, it is clear that the magnetic field lines of the superimposed permanent magnet are distributed asymmetrically in all directions.
  • the heavy permanent magnet Z2 in FIG. 4 is composed of 7 permanent magnets. Its manufacturing process and steps are the same as those of the first embodiment, but each permanent magnet has only the same height and width, and their overall length and the length of the right-angled sides in the horizontal direction of the corner blocks left after cutting off the corners are different. As shown in Figure 4, the total length of the first magnet M is 2B-L, the total length of the second magnet M2 is 2B-3L, the total length of the third magnet M3 'is 2B-5L, and so on.
  • the 7 magnets Mn have a total length of 2B-13L.
  • the triangle blocks of the same polarity on the right side are left, and the length of the right-angled side in the horizontal direction is B-L, and its total length is 2B-L.
  • the horizontal side lengths of the triangular blocks left after cutting off the corners are sequentially reduced, and these side lengths are B-2L and B-3L in this order. It can be seen from FIG. 4 that the overall length of the permanent magnets following the sequence is significantly shortened. Cut this way Cut and overlap, so that the degree of asymmetry in the distribution of the magnetic field lines of the overlapping permanent magnets in all directions is greatly increased.
  • FIG. 5 A schematic diagram of the magnetic field line distribution direction of this superimposed permanent magnet is shown in FIG. 5. Next, the structure of a disc-shaped superimposed permanent magnet will be described with reference to Figs. 6a, 6b, and 6c.
  • Figure 6a schematically shows the main magnet Z3 of a disc-shaped superimposed permanent magnet.
  • the direction of the magnetic lines of force in the blackened portion of the disk is -x, and the direction of the magnetic lines of force in the unblackened portion is -x.
  • the directions of the magnetic field lines of the two parts are opposite.
  • Figure 6b shows an exploded view of the permanent magnet superimposed on the upper part of the main magnet Z3 in the same direction as the upper right part of the main magnet Z3. That is, the unpainted part with the direction of the magnetic field line of the upper part of the main magnet Z3 as -X is cut off, and then several small permanent magnets with the direction of the magnetic field line as X are superimposed in this order. In this way, the distribution direction of the magnetic field lines on the upper part of the main magnet Z3 is Asymmetric.
  • Fig. 6c shows an exploded view of the permanent magnet superimposed on the lower part of the main magnet Z3 with many lines of force in the same direction as the lower right part of the main magnet 3. That is, the unpainted part with the direction of the magnetic field lines of the lower part of the main magnet Z3 as X is cut off, and then a number of smaller permanent magnets with the direction of the magnetic field lines of -X are superimposed in this order. In this way, the distribution direction of the magnetic field lines under the main magnet Z3 is Asymmetric.
  • Fig. 7a is a schematic plan view of a disc-shaped superimposed permanent magnet Z4 with holes.
  • This disc-shaped superimposed permanent magnet Z4 with holes is a superposition method of a plurality of arc-shaped permanent magnets M5 (eight in FIG. 7a) and a rectangular hexahedral superimposed permanent magnet Z1 shown in FIG. 3 Overlaid into a perforated disc.
  • This perforated The disc is like bending the long permanent magnets superimposed in FIG. 3, and the direction of the bending is such that the faces with the same direction of the magnetic lines of force are on the two end faces, respectively. However, since it is a disc with holes, and the ends overlap, the directions of the magnetic field lines on the two end faces are the same.
  • Figure 7b is a schematic plan view of another disc-shaped superimposed permanent magnet Z4 'with holes.
  • This disc-shaped superimposed permanent magnet Z4 'with holes is also made of several (eight) arc-shaped permanent magnets M5' superposed in the same overlapping manner as shown in FIG.
  • the direction of the magnetic field lines on the outer circumferential surface of the disc-shaped superimposed permanent magnet Z4 'with holes is the same, and the direction of the magnetic field lines on the inner circumferential surface is the same. It is as if the overlapping permanent magnet in Fig. 3 is bent so that its bending direction is perpendicular to the bending direction of the permanent magnet Z4 in Fig. 7a.
  • Figure 7c is a cross-sectional view taken along line .7c-7c in Figure 7a. As can be seen from Figure 7c, this overlap is exactly the same as in Figure 3.
  • Fig. 8a is a schematic plan view of an embodiment of a square overlapping permanent magnet Z5 with a hole.
  • Fig. 8b is a perspective view of one of the four identical permanent magnets M6 constituting the overlapping permanent magnet Z5 of Fig. 8a.
  • This overlapping method is similar to bending the long overlapping permanent magnets in Figure 3 into a square permanent magnet with holes. The bending direction is such that the faces with the same direction of the magnetic field lines are on the square end face with the holes. Since a cycle is formed, the directions of the magnetic field lines on the end faces are the same.
  • Fig. 8c is a schematic plan view of another embodiment of a square overlapping permanent magnet Z5 'with a hole.
  • Fig. 8d is a perspective view of a magnet M6 'constituting the perforated square overlapping permanent magnet Z5' in Fig. 8c.
  • the difference between this perforated square superimposed permanent magnet and the superimposed permanent magnet Z5 is that the directions of the magnetic field lines on the outer peripheral surface are the same, and the directions of the magnetic field lines on the inner peripheral surface are also the same. It is also similar to bending the long overlapping permanent magnet Z1 in FIG. 3, but the bending direction is perpendicular to the bending direction of the permanent magnet Z5.
  • 9a and 9b are schematic plan views of two trapezoidal superimposed permanent magnets Z6 and Z6, with holes. These two types of superimposed permanent magnets Z6 and Z6 'are composed of four permanent magnets M71, M72, M73, M74 and M7 ⁇ , M72, and M73 which are substantially similar in shape to the permanent magnets M6, M6' shown in Figs. 8b and 8d. , M74 ' Overlapping, but the angle and length of the two sides are different.
  • the overlapping manner is the same as that of the perforated square permanent magnets Z5 and Z5 in FIG. 8a and FIG. 8c, and the directions of the magnetic field lines are the same on both end surfaces and on the inner and outer peripheral surfaces thereof, respectively.
  • Figures 10a and 10b are schematic plan views of two triangular overlapping permanent magnets Z7 and Z7, with holes. These two 7 long-term magnets Z7 and Z7 'are composed of three permanent magnets M8 and M8' which are roughly similar in shape to the permanent magnets shown in Figures 8b and 8d (but the angle between the two sides is 60 degrees ).
  • the overlapping manner of the overlapping permanent magnets Z7 and V is the same as that of the rectangular permanent magnets Z5 and Z5 'with holes in Figs. 8a and 8b, and the directions of the magnetic field lines are the same on both end surfaces and on the inner and outer peripheral surfaces thereof. On the same.
  • the magnetic field lines of the superimposed permanent magnet of the present invention are asymmetrically distributed in all directions, or the magnetic field lines are oriented in the same direction. It can make full use of the magnetic performance of the permanent magnet and increase the relative motion of the push action.
  • the distance and power of the permanent magnet is a novel element that can be used to transmit power in various motion mechanisms, such as reciprocating and rotary motion transmission mechanisms.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

Le présente invention se rapporte à un nouvel aimant permanent composite dans lequel la ligne de force magnétique est asymétrique dans toutes les directions ou dans une seule direction. Ce genre d'aimant permanent composite tire complètement profit de la force magnétique et augmente la distance et l'impulsion du mouvement des aimants permanents. La présente invention se rapporte, en outre, à un procédé de fabrication d'un tel aimant permanent.
PCT/CN2002/000134 2002-03-04 2002-03-04 Aimant permanent composite WO2003075292A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2002/000134 WO2003075292A1 (fr) 2002-03-04 2002-03-04 Aimant permanent composite
AU2002235708A AU2002235708A1 (en) 2002-03-04 2002-03-04 Composite permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2002/000134 WO2003075292A1 (fr) 2002-03-04 2002-03-04 Aimant permanent composite

Publications (1)

Publication Number Publication Date
WO2003075292A1 true WO2003075292A1 (fr) 2003-09-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000134 WO2003075292A1 (fr) 2002-03-04 2002-03-04 Aimant permanent composite

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AU (1) AU2002235708A1 (fr)
WO (1) WO2003075292A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015147304A1 (fr) * 2014-03-27 2015-10-01 Tdk株式会社 Pièce d'aimant arquée, pièce d'aimant permanent, ensemble aimant permanent, dispositif d'application d'aimant permanent, et moteur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5506558A (en) * 1991-07-11 1996-04-09 Laube; Hans-Juergen Unipolar composite magnets

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5506558A (en) * 1991-07-11 1996-04-09 Laube; Hans-Juergen Unipolar composite magnets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015147304A1 (fr) * 2014-03-27 2015-10-01 Tdk株式会社 Pièce d'aimant arquée, pièce d'aimant permanent, ensemble aimant permanent, dispositif d'application d'aimant permanent, et moteur
JPWO2015147304A1 (ja) * 2014-03-27 2017-04-13 Tdk株式会社 弓形磁石片、永久磁石片、永久磁石組立体、永久磁石応用装置およびモータ
JP2021065092A (ja) * 2014-03-27 2021-04-22 Tdk株式会社 永久磁石片
JP7173119B2 (ja) 2014-03-27 2022-11-16 Tdk株式会社 永久磁石片

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