WO2023162279A1 - Dispositif d'attraction magnétique - Google Patents

Dispositif d'attraction magnétique Download PDF

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Publication number
WO2023162279A1
WO2023162279A1 PCT/JP2022/014800 JP2022014800W WO2023162279A1 WO 2023162279 A1 WO2023162279 A1 WO 2023162279A1 JP 2022014800 W JP2022014800 W JP 2022014800W WO 2023162279 A1 WO2023162279 A1 WO 2023162279A1
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WIPO (PCT)
Prior art keywords
magnetic
separator
main body
attraction
housing
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PCT/JP2022/014800
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English (en)
Japanese (ja)
Inventor
優 滝澤
泰正 山本
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カネテック株式会社
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Publication of WO2023162279A1 publication Critical patent/WO2023162279A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]

Definitions

  • the present invention relates to a magnetic attraction device that magnetically attracts a magnetic member by a magnetic circuit formed by magnetic flux generated from a permanent magnet.
  • a magnetic attraction device includes a device main body having a circular cross-sectional storage section in a magnetic housing, and a permanent magnet rotating body rotatably supported in the storage section.
  • the apparatus main body is magnetically divided into a pair of magnetic pole members by a pair of spacers provided in the magnetic housing.
  • the permanent magnet rotating body integrally includes a permanent magnet and a yoke magnetized to the north pole or the south pole.
  • One surface of the apparatus main body has a suction portion that attracts magnetic bodies such as workpieces, iron plates, and steel materials.
  • FIGS. 15A and 15B An example of a magnetic attraction device is shown in FIGS. 15A and 15B.
  • An apparatus main body 101 in the form of a magnetic housing is provided therein with an accommodating portion 102 having a circular cross section.
  • the apparatus main body 101 is magnetically divided into a pair of magnetic pole members by a pair of separators 103 (for example, made of aluminum) arranged at opposing positions.
  • One surface (bottom surface) of the device main body 101 has an attraction portion 101a that attracts a magnetic body such as a workpiece, an iron plate, or a steel material.
  • the separator 103 provided on the suction portion 101a and the opposite surface portion 101b is provided with tapped holes for attachment.
  • the permanent magnet rotating body 104 uses a plate-shaped permanent magnet 105 such as a ferrite magnet or a rare earth magnet, and a yoke 106 is superimposed on both sides (N pole surface and S pole surface) and integrally screwed. A surface of the yoke 106 facing the accommodating portion is formed into an arcuate surface.
  • the permanent magnet rotating body 104 can be rotated between a first position and a second position by a lever (not shown) extending outside the apparatus main body 101 .
  • the rotation angle of the permanent magnet rotor 104 is designed to be in the range of 90° to 100° as the central angle.
  • FIG. 15A shows the case where the permanent magnet rotating body 104 is at the first position.
  • the magnetic flux generated from the N-pole side yoke 106 passes through the apparatus main body 101 facing the device main body 101, passes outside the separator 103 provided on the adsorption portion 101a and the opposite surface portion 101b, passes through the device main body 101, and returns to the S-pole side yoke 106 in a magnetic circuit. M are formed respectively.
  • the device main body 101 is attracted and held by a magnetic body (not shown) arranged opposite to the attraction portion 101a.
  • FIG. 15B shows the case where the permanent magnet rotor 104 is at the second position.
  • the magnetic flux generated from the N-pole side yoke 106 forms a plurality of closed magnetic circuits M' that return to the S-pole side yoke 106 through the facing apparatus main body 101 while viewing the side surface of the permanent magnet 105 inward.
  • the lines of magnetic force do not leak to the outside of the attracting portion 101a, and the device main body 101 is not attracted to a magnetic body (not shown) arranged to face the attracting portion 101a.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2005-19551.
  • the above-described magnetic attraction device of Patent Document 1 includes a permanent magnet assembly in a circular cross-sectional bore extending through the magnetic circuit block in the longitudinal direction, and is attached by chamfering a portion of the magnetic circuit block.
  • a magnetic attraction surface is formed by fixing a pair of seats to the surface by welding or bolts.
  • a pair of arc-shaped permanent magnets having the same curvature as the inner surface of the magnetic pole member is attached to the outer peripheral surface of the cylindrical magnetic pole member.
  • a rod-shaped handle is connected to one end in the longitudinal direction of the magnetic pole member, and rotated at an angle of less than 90° to be attracted to the first recess and the second recess of the end plate provided at both ends of the magnetic circuit block, Adsorption release is switched.
  • the magnetic attracting surface of the magnetic circuit block requires man-hours such as chamfering and welding of the seats. Therefore, the number of parts and the number of processes increase, and the production cost increases.
  • the surface portion 101b When the surface portion 101b is used as a mounting portion for instruments such as measuring instruments, it is necessary to take countermeasures against magnetism. Furthermore, since the structurally weak separator 103 is provided with a tapped hole, there is a possibility that the strength is lowered.
  • the present invention has been made to solve these problems, and its object is to obtain a sufficient magnetic force with a simple structure and a small size, to have good rotational operability, and to emit magnetic flux from the opposite surface of the attracting part. To provide a magnetic attraction device free from leakage and convenient to use.
  • the present invention has the following configuration.
  • a plurality of magnetic circuits are formed by a plurality of separators provided in the magnetic block, and a plurality of magnetic circuits are formed in the magnetic block. and a lid portion for closing the opening of the housing portion of the device body; and a base portion that is housed in the housing portion of the device body and is magnetized to the N pole or the S pole centering on the rare earth magnet block.
  • a permanent magnet rotating body rotatably supported by a pair of yokes facing the inner surface of the accommodating portion of the magnetic block, and a shaft portion at one end in the longitudinal direction of the permanent magnet rotating body.
  • a handle portion assembled to be exposed from the lid portion, and rotating the handle portion rotates the permanent magnet rotating body by a predetermined angle smaller than 90° with respect to a central angle, thereby causing the magnetic flux to flow from the device main body.
  • a first position at which a plurality of magnetic circuits leaking outward from a plurality of separators are respectively formed and the base portion is attracted to a magnetic member facing the attraction portion, and the main body of the apparatus and the permanent magnet rotor.
  • a plurality of closed magnetic circuits separated by the plurality of separators are formed respectively, and the base portion is switched between the attracting portion and a second position where the attraction to the opposing magnetic member is released.
  • the device main body has an attraction part in a part of the magnetic block in which a plurality of magnetic circuits are formed, an accommodation part with a circular cross section inside the magnetic block, and a plurality of separators to magnetically attract the plurality of magnetic pole members. Since it is divided into parts, it is possible to reduce the number of parts and the number of processing steps, thereby simplifying the structure. Further, by using a permanent magnet rotating body that is rotatably supported so that a pair of yokes magnetized to the north pole or the south pole around the rare earth magnet block are opposed to the inner surface of the housing portion of the magnetic block, the small diameter However, sufficient magnetic force can be obtained.
  • the permanent magnet rotor accommodated in the apparatus main body can be rotated at a predetermined angle of less than 90°. Rotating operation within a range allows the base portion to switch between attraction and attraction release with the magnetic member facing the attracting portion, thereby improving rotational operability.
  • Each of the pair of yokes has a chamfered portion formed by chamfering an arcuate surface facing the inner surface of the accommodation portion of the magnetic housing.
  • the chamfered portion is arranged to face the first separator provided in the adsorption portion, and any of the chamfered portions is arranged to face the second separator to form a plurality of magnetic circuits that leak magnetic flux to the outside of the device main body.
  • the base portion can be attracted and held by the magnetic body facing the attracting portion.
  • a magnetic circuit is formed in which the magnetic flux generated from the N pole side yoke passes through the facing magnetic housing, the outside of the second separator, and returns to the S pole side yoke via the magnetic housing. Further, by arranging the first separator and the second separator at a predetermined angle of less than 180°, it is possible to prevent magnetic flux from leaking out of the device main body from the surface opposite to the adsorption portion of the device main body.
  • the arc surfaces of the pair of yokes are arranged to face the first separator or the second separator provided in the magnetic housing, respectively, so that the magnetic housing and the permanent magnet rotating body are arranged to face each other. It is preferable that a plurality of closed magnetic circuits are formed between which no magnetic flux leaks. As a result, when the handle portion is at the second position, a plurality of closed magnetic circuits are formed in which the magnetic flux generated from the N-pole side yoke returns to the S-pole side magnetic block via the opposing magnetic housing, and the base portion is It does not stick to the magnetic body facing the adsorption part.
  • a first separator and a second separator that magnetically divide the magnetic housing are arranged at a predetermined angle smaller than 180° at the central angle, and thin portions having a thin plate thickness are provided on adjacent side surfaces of the magnetic housing. may be formed.
  • the central angle of the first and second separators that magnetically divide the magnetic housing is set to a predetermined angle smaller than 180°, the magnetic flux is transmitted from the opposite side of the device main body to the attracting portion. It is possible to prevent leakage to the outside of the main body, and it is possible to process tap holes for mounting in a magnetic housing that is structurally strong other than the separator, so mounting strength is also improved.
  • the first separator and the second separator can be processed integrally by cutting, molding, etc. when forming the storage part and the adsorption part of the magnetic housing, reducing the number of parts and simplifying the structure. can do.
  • the gap forming the thin portion may also serve as a positioning hole into which a boss of a lid portion for closing the accommodating portion of the magnetic housing is inserted. As a result, it is possible to omit a screw hole for fixing the cover portion to the apparatus main body, improve the assembling efficiency, and increase the number of magnetic fluxes passing through the magnetic housing.
  • a curved surface may be formed on the side surface of the magnetic housing continuously with the thin portion forming the second separator.
  • the curved surface provides an escape space to prevent the magnetic work from being unintentionally attracted to a surface other than the attracting surface.
  • a first separator and a second separator that magnetically divide the magnetic housing may be arranged at a predetermined angle smaller than 180° with respect to the central angle, and non-magnetic materials may be interposed between adjacent side surfaces of the magnetic housing. .
  • a non-magnetic material for example, an aluminum material
  • the magnetic housing can be divided into a plurality of magnetic pole members in the same manner as the thin portion.
  • the handle connected to the permanent magnet rotating body may be rotatable (forward and reverse rotatable) within a central angle of 60° to 70°. As a result, even if a rare earth magnet block is used for the permanent magnet rotating body, the operability of rotating the handle portion by the operator is improved.
  • the base portion may have an attracting portion formed on one surface of the device main body to be attracted to the magnetic member, and the opposite surface portion to the attracting portion may serve as an attachment portion for the attached member.
  • Each of the pair of yokes has a chamfered portion formed by chamfering an arcuate surface facing the inner surface of the accommodation portion of the magnetic cylinder. is arranged to face the first separator provided in the adsorption portion, and any of the chamfered portions is arranged to face the second separator to form a plurality of magnetic circuits that leak magnetic flux from the end surface of the magnetic cylinder. You may do so.
  • the magnetic flux generated from the N pole side yoke returns to the S pole side yoke across the first separator or the second separator through the end surface of the opposing magnetic cylinder.
  • a circuit is formed.
  • the base portion can be attracted and fixed to the magnetic member facing the end surface of the magnetic cylinder.
  • one longitudinal end of the magnetic cylinder is used as the attracting part, and the handle part is arranged at the other longitudinal end, so that it can be installed even in a place where the attracting area is narrow.
  • the magnetic poles of the rare earth magnet block are arranged to face the first separator or the second separator, respectively, so that magnetic flux does not leak between the magnetic cylinder and the permanent magnet rotating body.
  • magnetic closed circuits may be formed respectively.
  • a plurality of closed magnetic circuits are formed in which the magnetic flux generated from the N-pole side yoke returns to the S-pole side yoke via the opposing magnetic cylinder. At this time, since the magnetic flux does not leak from the magnetic cylinder, it is not attracted to the magnetic member facing the end surface of the magnetic cylinder.
  • the rotating plate is connected to the shaft at one end in the longitudinal direction of the permanent magnet rotating body, and is rotatably arranged at one end of the magnetic cylinder.
  • the rotary plate is arranged at one end of the magnetic cylinder by being connected to the permanent magnet rotary body, and the cover portion is attached to the magnetic cylinder by overlapping the rotary plate. It can be placed compactly.
  • the lid portion may be disposed on the opposite side of the magnetic cylinder from the suction portion on the other end side, and may serve as the attachment surface of the member to be attached.
  • the magnetic attraction device can be arranged without taking up an installation area. can be
  • the permanent magnet rotating body is rotatably supported via a bearing provided on at least one end side within the accommodating portion of the apparatus main body.
  • the permanent magnet rotating body has yokes arranged on both sides of the rare earth magnet block, and the magnetic attraction force is large compared to ferrite magnets, etc., and the rotational operability tends to deteriorate. improve sexuality.
  • 1A to 1C are a front view, a plan view, and a cross-sectional view taken along arrow AA of the magnetic attraction device according to the first embodiment.
  • 2A and 2B are explanatory diagrams of magnetic circuits formed in the device main body according to the rotational position of the permanent magnet rotor in the magnetic attraction device according to the first embodiment.
  • 3A and 3B are a front view and a plan view of a device main body used in the magnetic adsorption device according to the first embodiment.
  • 4A and 4B are a front view and a plan view of a yoke used in the magnetic adsorption device according to the first embodiment.
  • FIG. FIG. 5 is an exploded perspective view of the magnetic attraction device according to the first embodiment.
  • FIG. 6A to 6C are a front view, a plan view, and a cross-sectional view taken along the arrow BB direction of the magnetic attraction device according to the second embodiment.
  • 7A and 7B are a front view and a plan view of a device main body used in a magnetic adsorption device according to Example 2.
  • FIG. 8A and 8B are a front view and a plan view of a yoke used in the magnetic adsorption device according to the second embodiment.
  • FIG. 9 is an exploded perspective view of the magnetic attraction device according to the second embodiment.
  • FIG. 10 is an explanatory diagram showing a modification of the device main body used in Examples 1 and 2.
  • FIG. 10 is an explanatory diagram showing a modification of the device main body used in Examples 1 and 2.
  • 11A and 11B are explanatory diagrams of magnetic circuits formed in the device main body according to the rotational position of the permanent magnet rotor used in the magnetic attraction device according to the third embodiment.
  • 12A and 12B are a perspective view and an exploded perspective view of a magnetic attraction device according to Example 4.
  • FIG. 13A to 13C are a front view, a plan view, and a rear view of a device main body, a front view and a plan view of a handle portion, and a front view and a plan view of a lid, which are used in the magnetic adsorption device according to the fourth embodiment.
  • 14A to 14E are a front view, a bottom view, and a horizontal cross-sectional view of a magnetic attraction device according to Example 4, and are explanatory diagrams of magnetic circuits formed in the device main body according to the rotational position of the permanent magnet rotor.
  • 15A and 15B are explanatory diagrams of a magnetic circuit formed in the device main body according to the rotational position of the permanent magnet rotating body of the current magnetic attraction device.
  • the magnetic adsorption device 1 includes a device main body 2 having a storage portion 2a having a circular cross section inside a magnetic housing 2b (magnetic block), and a lid portion for closing the opening of the storage portion 2a of the device main body 2. 3, and a pair of yokes magnetized to the north pole or the south pole centering on the rare earth magnet block 5a. and a handle portion 6 which is connected to a shaft portion on one longitudinal end side of the permanent magnet rotor 5 and has a lever 6 a (operation portion) extending from the outer surface of the lid portion 3 .
  • the device main body 2 uses a magnetic housing 2b made of iron, for example.
  • the magnetic housing 2b is divided into a plurality of magnetic pole members by a plurality of separators (a first separator 2c and a second separator 2d) to form a plurality of magnetic circuits.
  • the device main body 2 is formed with an attraction portion 2e that is attracted to the opposing magnetic member 8 across the first separator 2c (see FIG. 2A).
  • the adsorption portion 2e is formed on a flat surface continuous with an inclined surface chamfered in a V shape on both sides with the thin first separator 2c adjacent to the accommodating portion 2a interposed therebetween.
  • the first separator 2c and the second separator 2d are formed of thin-walled portions in which adjacent side surfaces of the magnetic housing 2b constituting the apparatus main body 2 are thin.
  • the first separator 2c and the second separator 2d are formed by forming gaps such as round holes or recesses in adjacent side surfaces of the magnetic housing 2b.
  • the first separator 2c and the second separator 2d are arranged at a predetermined angle of less than 180° (for example, the central angle is in the range of 145° to 150°), so that the adsorption portion 2e of the device main body 2 Magnetic flux can be prevented from leaking from the opposite surface portion (mounting portion 2f).
  • a screw hole 2g (tap hole) is formed in the mounting portion 2f, which is the opposite surface portion of the adsorption portion 2e.
  • the shaft of the holder can be screwed into the screw hole 2g.
  • the threaded hole 2g may be omitted if another mounting method is employed. In this way, since tapped holes for mounting can be formed in the structurally strong magnetic housing 2b other than the separator in the device main body 2, mounting strength is also improved.
  • Boss holes 2h and 2i are provided around the accommodating portion 2a, as indicated by broken lines in FIG. 3B. Boss portions 3a and 3b provided on the cover portion 3, which will be described later, are fitted into and assembled with the boss holes 2h and 2i, respectively. As shown in FIG. 3A, the boss hole 2h is formed continuously with the housing portion 2a, and in order to form the second separator 2d, it is formed from the front side of the magnetic housing 2b to the vicinity of the back side along the longitudinal direction. It is
  • the permanent magnet rotating body 5 is composed of a pair of yokes 5b and 5c magnetized to the north pole or the south pole around a plate-shaped rare earth magnet block 5a. It is rotatably supported with a slight gap from the inner surface of 2a.
  • the polarities of the N pole side yoke 5c and the S pole side yoke 5b may be interchanged.
  • the permanent magnet rotating body 5 is magnetically divided into left and right semi-cylindrical blocks by forming an insertion hole 5d in a radial direction that intersects the longitudinal center axis of a cylindrical block made of a magnetic material.
  • the pair of yokes 5b and 5c are mechanically connected integrally by bearing mounting portions 5e and 5f provided at both ends in the longitudinal direction.
  • the pair of yokes 5b and 5c are semi-cylindrical.
  • Chamfered portions 5b1 and 5c1 which are chamfered arcuate surfaces, are formed on one radial end side (upper end side in FIG. 4A) of the block.
  • the plate-shaped rare earth magnet block 5a is magnetized to the N pole or the S pole while being inserted into the insertion hole 5d of the cylindrical block, and the pair of yokes 5b and 5c face the inner surface of the housing portion 2a of the device main body 2.
  • the N pole side yoke 5c and the S pole side yoke 5b are formed plane-symmetrically (see FIGS. 2A and 2B).
  • small-diameter columnar bearing mounting portions 5e and 5f extend from both ends of the pair of yokes 5b and 5c in the longitudinal direction.
  • Rolling bearings 7a and 7b are fitted to the outer peripheries of the bearing mounting portions 5e and 5f, respectively, as will be described later.
  • a fitting hole 5g for fitting a fitting protrusion 6b of the handle portion 6, which will be described later, is formed in the bearing mounting portion 5e on one side (front side).
  • the rolling bearings 7a, 7b (bearings) are assembled to the outer peripheries of bearing mounting portions 5e, 5f provided at the longitudinal ends of a pair of yokes 5b, 5c.
  • the rolling bearings 7a, 7b are fitted into the accommodating portion 2a of the device main body 2 together with the pair of yokes 5b, 5c, and support the permanent magnet rotor 5 rotatably with respect to the device main body 2.
  • FIG. By supporting the permanent magnet rotor 5 via the rolling bearings 7a and 7b in this manner, the rotational operability of the permanent magnet rotor 5 using the rare earth magnet block 5a can be enhanced.
  • one of the pair of rolling bearings 7a and 7b can be omitted by changing the shape of the bearing mounting portion.
  • the handle portion 6 has a lever 6a that is gripped by an operator extending in the radial direction on the front side, and a fitting protrusion 6b that protrudes on the back side.
  • the fitting convex portion 6b is assembled so as to fit into the fitting hole 5g of the facing bearing mounting portion 5e.
  • an arcuate projection 6c is provided on the outer peripheral edge of the handle portion 6, and a cut is provided in the circumferential direction on the inner wall surface of the fitting cylinder portion 3c provided on the back side of the lid portion 3, which will be described later. It is fitted so as to be rotatable within a predetermined range along the notch recess 3d. That is, the handle portion 6 is assembled so as to rotate within the range of the notch recess 3d provided with the arcuate projection 6c in the circumferential direction (central angle ⁇ : range of 60° to 70°).
  • a hole 3e is provided in the central portion of the lid portion 3, and the lid portion 3 is assembled from the front side of the handle portion 6. As shown in FIGS. It is arranged so as to be exposed to the outside. Bosses 3a and 3b provided at diagonal positions on the back side of the lid portion 3 are fitted into boss holes 2h and 2i provided around the housing portion 2a of the apparatus main body 2 and assembled. In this manner, the boss hole 2h forming the second separator 2d also serves as a positioning hole into which the boss portion 3a of the lid portion 3 that closes the accommodating portion 2a of the magnetic housing 2b is inserted. A screw hole for fixing the lid portion 3 can be omitted, the assembling efficiency can be improved, and the number of magnetic fluxes passing through the magnetic housing 2b can be increased.
  • the handle portion 6 connected to the permanent magnet rotor 5 is rotatable within a range of 60° to 70° when the lever 6a has a central angle ⁇ . .
  • This improves the operability of rotating the handle portion 6 by the operator.
  • the magnetized boundary portion (end surface) of the rare earth magnet block 5a in FIG. 2 c , and the chamfered portion 5 b 1 of the yoke 5 b is arranged to face the second separator 2 d provided in the device main body 2 .
  • the magnetic flux is leaked out of the device main body 2 from the N pole side yoke 5c through the opposing magnetic housing 2b, straddling the first separator 2c, and returned to the S pole side yoke 5b through the magnetic housing 2b.
  • the magnetic flux is leaked out of the device main body 2 through the first magnetic circuit M1 and the second separator 2d via the magnetic housing 2b facing the N pole side yoke 5c, and flows through the magnetic housing 2b to the S pole side yoke 5b.
  • Each returning second magnetic circuit M2 is formed.
  • a first magnetic circuit M1 is formed in the magnetic member 8 arranged to face the attracting portion 2e, and the base portion 4 is attracted and held by the magnetic member 8. As shown in FIG.
  • a second closed magnetic circuit M2' is formed that returns to the south pole side yoke 5b through the more opposed magnetic housing 2b while looking inward at the magnetized boundary (end surface) of the rare earth magnet block 5a.
  • a plate-shaped rare earth magnet block 5a is inserted into an insertion hole 5d between yokes 5b and 5c having chamfered portions 5b1 and 5c1 to A permanent magnet rotating body 5 magnetized to the S pole is prepared.
  • This permanent magnet rotor 5 is prepared.
  • the rolling bearings 8a and 8b are fitted to the bearing mounting portions 5e and 5f extending at both ends in the longitudinal direction, and these are inserted into the accommodating portion 2a of the apparatus main body 2 and assembled. Further, the fitting convex portion 6b of the handle portion 6 is fitted into the fitting hole 5g of the bearing mounting portion 5e to be integrally assembled.
  • boss portions 3a and 3b are fitted into the boss holes 2h and 2i of the device main body 2 while the lever 6a is inserted through the hole 3e of the lid portion 3 and exposed to the outside.
  • the magnetic flux generated from the N-pole side yoke 5c passes through the device main body 2 facing it, passes through the outside of the first separator 2c, passes through the device main body 2, and passes through the S A first magnetic circuit M1 returning to the pole-side yoke 5b is formed, and the base portion 4 can be attracted to the magnetic member 8 facing the attraction portion 2e.
  • the magnetic flux is leaked from the N-pole side yoke 5c to the outside of the device main body 2 via the opposing magnetic housing 2b, straddling the second separator 2d, and returned to the S-pole side yoke 5b through the magnetic housing 2b.
  • the permanent magnet rotor 5 has a pair of yokes 5b and 5c arranged on both sides of a rare earth magnet block 5a. Rotational operability is improved by intervening. Also, since the central angle ⁇ of the lever 6a is in the range of 60° to 70°, it is easy to rotate.
  • the magnetic attraction device 1 has a device main body 2 having a storage portion 2a with a circular cross section inside a magnetic housing 2b, and a lid portion 3 for closing the opening of the storage portion 2a of the device main body 2.
  • a base portion 4 and a pair of yokes 5b and 5c magnetized to the north pole or the south pole around a rare earth magnet block 5a are rotatably supported so as to face the inner surface of the housing portion 2a of the apparatus main body 2, respectively.
  • the configuration in which the magnet rotating body 5 and the shaft portion on one longitudinal end side of the permanent magnet rotating body 5 are connected and the lever 6a is provided with the handle portion 6 extending from the outer surface of the lid portion 3 is the same as the first embodiment. is.
  • This embodiment differs from the first embodiment in that the rolling bearing 7b of the pair of bearings is omitted, and the structure of the permanent magnet rotor 5 and the device main body 2 that rotatably supports it is different.
  • the permanent magnet rotating body 5 is magnetized to the N pole or the S pole while the plate-shaped rare earth magnet block 5a is inserted into the insertion hole 5d of the cylindrical block, and the circular arc surface is formed.
  • the configuration in which a pair of yokes 5b and 5c having chamfered chamfered portions 5b1 and 5c1 are plane-symmetrically formed is the same as that of the first embodiment.
  • a small-diameter columnar bearing mounting portion 5e extends from one end in the longitudinal direction of the columnar block that constitutes the yokes 5b and 5c.
  • a rolling bearing 7a is fitted to the outer periphery of the bearing mounting portion 5e as will be described later.
  • a conical shaft portion 5h having a tapered surface protrudes from the center portion of the other longitudinal end of the columnar block that constitutes the yokes 5b and 5c. The tip of the conical shaft portion 5h may not be sharp and may be chamfered into a truncated cone.
  • the apparatus main body 2 uses a magnetic housing 2b made of, for example, iron.
  • the magnetic housing 2b is divided into a plurality of magnetic pole members by a first separator 2c and a second separator 2d to form a plurality of magnetic circuits.
  • the device main body 2 is formed with an attraction portion 2e that straddles the first separator 2c and that attracts a facing magnetic body (not shown).
  • the first separator 2c and the second separator 2d are formed of thin portions in which adjacent side surfaces of the magnetic housing 2b constituting the apparatus main body 2 are thin.
  • the first separator 2c and the second separator 2d are arranged at a predetermined angle of less than 180° (for example, the central angle is in the range of 145° to 150°), which is also the same as in the first embodiment.
  • boss holes 2h and 2i are provided around the accommodating portion 2a, as indicated by broken lines in FIG. 7B.
  • the boss portions 3a and 3b provided on the lid portion 3 are fitted into the boss holes 2h and 2i, respectively.
  • a bearing recess 2j is provided in the central portion of the inner wall of the rear surface of the accommodation portion 2a.
  • the bearing recess 2j is formed as an inverted conical hole for receiving the conical shaft portion 5h of the permanent magnet rotor 5. As shown in FIG. As shown in FIG.
  • the permanent magnet rotating body 5 is centered and accommodated in the accommodating portion 2a of the apparatus main body 2 by fitting the conical shaft portion 5h into the bearing recessed portion 2j on the rear side in the longitudinal direction, and the rolling bearing is provided on the front side in the longitudinal direction. It is rotatably supported via 7a.
  • a plate-like rare earth magnet block 5a is inserted into an insertion hole 5d between yokes 5b and 5c having chamfered portions 5b1 and 5c1 to A permanent magnet rotating body 5 magnetized to the S pole is prepared.
  • a rolling bearing 7a is fitted to the bearing mounting portion 5e extending from one end in the longitudinal direction of the permanent magnet rotating body 5, and is inserted into the housing portion 2a of the device main body 2 from the conical shaft portion 5h side and fitted into the bearing recess 2j. Assemble together.
  • the fitting convex portion 6b of the handle portion 6 is fitted into the fitting hole 5g of the bearing mounting portion 5e to be integrally assembled.
  • the boss portions 3a and 3b are fitted into the boss holes 2h and 2i of the device main body 2 while the lever 6a is inserted through the hole 3e of the lid portion 3 and exposed to the outside.
  • Example 3 A schematic configuration of the magnetic attraction device according to the third embodiment will be described below with reference to FIGS. 11A and 11B.
  • the same members as those in the first embodiment are denoted by the same reference numerals, and the following description focuses on the different configurations.
  • the first separator 2c and the second separator 2d that magnetically divide the device main body 2 are arranged at a predetermined central angle smaller than 180° (for example, the central angle is in the range of 145° to 150°).
  • non-magnetic materials aluminum material, etc.
  • the non-magnetic material is integrally attached to the magnetic housing 2b by welding or adhesion. In this manner, by interposing non-magnetic material (for example, aluminum material) between adjacent side surfaces of the magnetic housing 2b, the magnetic housing 2b can be divided into a plurality of magnetic pole members in the same manner as the thin portion.
  • the attachment strength is also improved.
  • the structure of the permanent magnet rotor 5 is the same as that of the first embodiment, and the rotation angle of the handle portion 6 connected to the permanent magnet rotor 5 is within the range of the central angle ⁇ of 60° to 70°. The point that it is provided to be possible is also the same.
  • the magnetized boundary portion (end surface) of the rare earth magnet block 5a in FIG. 11A is arranged to face the first separator 2c
  • the chamfered portion 5b1 of the south pole side yoke 5b is arranged to face the second separator 2d provided in the apparatus main body 2.
  • the magnetic flux is leaked out of the device main body 2 from the N pole side yoke 5c through the opposing magnetic housing 2b, straddling the first separator 2c, and returned to the S pole side yoke 5b through the magnetic housing 2b.
  • the magnetic flux is leaked out of the device main body 2 through the first magnetic circuit M1 and the second separator 2d via the magnetic housing 2b facing the N pole side yoke 5c, and flows through the magnetic housing 2b to the S pole side yoke 5b.
  • Each returning second magnetic circuit M2 is formed.
  • a magnetic body (not shown) is arranged to face the attraction portion 2e, a first magnetic circuit M1 is formed and the magnetic housing 2b (base portion 4) is attracted and held by the magnetic body.
  • a second closed magnetic circuit M2' is formed that returns to the south pole side yoke 5b through the more opposed magnetic housing 2b while looking inward at the magnetized boundary (end surface) of the rare earth magnet block 5a.
  • FIGS. 12A to 14E A schematic configuration of the magnetic attraction device according to the fourth embodiment will be described below with reference to FIGS. 12A to 14E.
  • the same members as those in the first embodiment are denoted by the same reference numerals, and the following description focuses on the different configurations.
  • the configuration of the permanent magnet rotating body 5 is the same as that of the first embodiment.
  • a magnetic cylinder 2n is used as a magnetic block, one longitudinal end of the magnetic cylinder 2n is closed by a lid 3 via a handle 6, and an attraction part 2e is formed on the other longitudinal end. It is a vertically long specification.
  • a screw hole 3f (tapped hole) is drilled in the central portion of the lid portion 3, and a holder for holding a dial gauge or the like is attached. That is, the lid portion 3 serves as a mounting surface for mounting a shaft of a holder (not shown) by screwing it into the screw hole 3f.
  • the magnetic cylinder 2n is provided with an accommodating portion 2a formed of a cylindrical hole extending in the longitudinal direction at the central portion.
  • a permanent magnet rotating body 5 is rotatably accommodated in the accommodating portion 2a.
  • Three screw holes 2p are provided in one end face in the longitudinal direction of the magnetic cylinder 2a, and a lid portion 3, which will be described later, is screwed and assembled.
  • the magnetic cylinder 2n is divided into a plurality of magnetic pole members by separators (first separator 2c, second separator 2d) provided at a plurality of locations in the circumferential direction.
  • the first separator 2c and the second separator 2d are formed by a thin portion in which the plate thickness of the peripheral wall of the magnetic cylinder 2n constituting the device main body 2 is thin.
  • the first separator 2c and the second separator 2d are arranged at a predetermined angle of less than 180° (for example, the central angle is 120°).
  • the first separator 2c and the second separator 2d are formed from one end in the longitudinal direction of the magnetic cylinder 2n to near the other end in the longitudinal direction.
  • the first separator 2c and the second separator 2d are formed by forming a gap portion 2q such as a round hole or a concave portion adjacent to the accommodation portion 2a of the magnetic cylinder 2n.
  • the first separator 2c and the second separator 2d can be integrally processed when forming the housing portion 2a of the device main body 2 by cutting, molding, or the like, so that the number of parts can be reduced and the structure can be simplified. .
  • the air gap 2q provided in the longitudinal direction of the magnetic cylindrical body 2n is not formed so as to penetrate to the annular end surface that becomes the attracting portion 2e.
  • a non-magnetic material (aluminum material, etc.) may be interposed in the peripheral wall of the magnetic cylinder 2n.
  • the non-magnetic material is integrally attached to the magnetic cylinder 2n by welding or adhesion.
  • the handle portion 6 uses a disk-shaped rotating plate.
  • a fitting convex portion 6b is projected to be fitted into the fitting hole 5g of the bearing mounting portion 5e of the yokes 5b and 5c.
  • a fitting concave portion 6e is formed on the opposite surface of the fitting convex portion 6b, into which a central shaft 3g of the lid portion 3, which will be described later, is fitted.
  • a plurality of (for example, three) elongated holes 6d are formed in a series of circular arcs.
  • the boss portion 3h is inserted into the long hole 6d when the later-described cover portion 3 is screw-fitted into the screw hole 2p of the magnetic cylinder 2n (see FIG. 12B).
  • the handle portion 6 is assembled by being sandwiched between the device main body 2 and the lid portion 3 so that the outer peripheral surface 6f is exposed. Therefore, the amount of rotation of the handle portion 6 is within a range in which the boss portion 3h inserted into the long hole 6d and both ends of the long hole 6d are locked.
  • the outer peripheral surface 6f (operating portion) of the handle portion 6 is knurled so that the operator can grip the outer peripheral surface 6f and rotate it in a predetermined direction without slipping. By rotating the handle portion 6, it is possible to switch between attracting and releasing the attracting portion 2e of the magnetic cylinder 2n, which will be described later.
  • the lid portion 3 is arranged on the end surface of the magnetic cylinder 2n opposite to the attracting portion 2e, and is overlapped with the handle portion 6 (rotating plate) and connected to the end of the magnetic cylinder 2n.
  • the lid portion 3 is formed in a disc shape, and has a center shaft 3g protruding from the center thereof, which serves as the rotation shaft of the handle portion 6.
  • a threaded hole 3f (tapped hole) is provided on the opposite surface of the central shaft 3g.
  • Boss portions 3h are provided at a plurality of locations (for example, three locations) on the outer peripheral side of the lid portion 3. As shown in FIG.
  • the boss portion 3h is provided with a sleeve hole 3i into which a screw 9, which will be described later, is fitted.
  • the lid portion 3 also serves as the attachment surface of the member to be attached, the magnetic adsorption device 1 can be arranged without taking up an installation area, and in addition, the lid provided with the central axis 3g having a relatively high strength.
  • a tapped hole can be provided in the portion 3 to serve as a mounting surface.
  • a plate-shaped rare earth magnet block 5a is inserted into the insertion hole 5d between the yokes 5b and 5c provided with the chamfered portions 5b1 and 5c1 to form the N pole or S pole.
  • a permanent magnet rotating body 5 magnetized to poles is prepared.
  • Rolling bearings 7a and 7b are fitted to bearing mounting portions 5e and 5f extending from both longitudinal ends of the permanent magnet rotating body 5, respectively, and are inserted and assembled into the receiving portion 2a of the magnetic cylinder 2n. Further, the fitting hole 5g of the bearing mounting portion 5e and the fitting convex portion 6b (see FIG.
  • the lid portion 3 is fitted to the handle portion 6 with the center shaft 3g fitted into the fitting recess 6e, and the three boss portions 3h are inserted into the corresponding elongated holes 6d and overlapped with each other, and the sleeve holes 3i of the respective boss portions 3h are overlapped. are aligned with the corresponding screw holes 2p of the magnetic cylinder 2n and abutted against each other. Then, by fitting the screw 9 into the sleeve hole 3i and screwing it into the screw hole 2p, the handle portion 6 and the lid portion 3 are assembled to overlap the end portion of the magnetic cylinder 2n as shown in FIG.
  • An outer peripheral surface 6 f (operating portion) of the handle portion 6 is assembled so as to protrude outward from the outer peripheral surface of the lid portion 3 .
  • the rare earth magnet block is positioned as shown in FIG. 14C.
  • a magnetized boundary portion (end surface) of 5a is arranged to face the first separator 2c, and a chamfered portion 5b1 of the yoke 5b is arranged to face the second separator 2d provided in the device main body 2.
  • the magnetic flux generated from the N-pole side yoke 5b leaks out of the apparatus main body 2 from the opposing magnetic cylinder 2n, and the first and second separators First and second magnetic circuits M1 and M2 are formed that return to the S pole side yoke 5c through the other magnetic cylinder 2n that is magnetically separated across the 2c and 2d.
  • the device body 2 is attracted and fixed to the magnetic member 8 by the magnetic flux passing through the magnetic member 8 facing the attraction portion 2e of the magnetic cylinder 2n.
  • the magnetic flux across the first and second separators 2c and 2d also leaks from the outer peripheral surface of the magnetic cylindrical body 2n, it does not contribute to the attracting operation to the magnetic member 8.
  • the S pole of the rare earth magnet block 5a is It is arranged to face the first separator 2c and the N pole is arranged to face the second separator 2d.
  • the magnetic flux generated from the N-pole side yoke 5b passes through the opposed magnetic cylinder 2n and returns to the S-pole side yoke, forming first and second magnetic closed circuits M1' and M2', respectively ( See Figure 14E).
  • the polarities (N pole/S pole) of the rare earth magnet block 5a may be interchanged.
  • the apparatus main body 2 used in the above-described Examples 1 to 3 is the magnetic housing 2b
  • the shape of the 6-sided portion does not necessarily have to be flat, and the adsorption portion 2e is formed with an inclined surface.
  • uneven surfaces, inclined surfaces, curved surfaces, or the like may be formed on other side surfaces.
  • the magnetic cylindrical body 2n used in the fourth embodiment does not necessarily have to have a circular ring shape, and may be formed in various shapes such as an elliptical shape, an elliptical shape, and a rectangular shape including a curved surface.
  • the rare earth magnet block 5a is formed in a plate shape and is inserted into the insertion hole 5d provided in the radial direction, it is not limited to a plate shape, and may be formed in, for example, a columnar shape and provided in the axial direction with respect to the yoke. It may be inserted from an insertion hole provided.
  • the magnetic attraction device 1 described above is assembled by fitting the constituent parts together as much as possible, it may be assembled by using press-fitting, adhesion, or the like in combination.
  • the operation angle (rotation angle) of the handle portion 6 is exemplified as 60° to 70° in central angle, but it is not limited to this.
  • the center angle can be as small as 45°-55° or as large as 80°-90°.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

La présente divulgation concerne un dispositif d'attraction magnétique avec lequel il est possible d'obtenir, avec une configuration simple, une force magnétique suffisante même si le dispositif est compact, et qui a une fonctionnalité de rotation intéressante et est facile à utiliser sans fuite de flux magnétique depuis la surface opposée à une partie d'attraction.　Pour résoudre le problème, un rotor à aimant permanent (5) est tourné à un angle central d'un angle prescrit inférieur à 90 degrés par une opération de rotation d'une partie poignée (6) pour commuter entre : une première position dans laquelle une pluralité de circuits magnétiques (M1), (M2) qui provoquent une fuite de flux magnétique vers l'extérieur de séparateurs (2c), (2d) depuis une partie d'attraction (2e) d'un corps principal de dispositif (2) est formée, et une partie de base (4) est attirée sur un élément magnétique (8) faisant face à la partie d'attraction (2e) ; et une seconde position dans laquelle une pluralité de circuits fermés magnétiques (M1'), (M2') séparés par les séparateurs (2c), (2d) est respectivement formée entre le corps principal de dispositif (2) et le rotor à aimant permanent (5) et la partie de base (4) relache l'attraction de l'élément magnétique (8) faisant face à la partie d'attraction (2e).
PCT/JP2022/014800 2022-02-25 2022-03-28 Dispositif d'attraction magnétique WO2023162279A1 (fr)

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Application Number Priority Date Filing Date Title
JP2022-028182 2022-02-25
JP2022028182A JP2023124431A (ja) 2022-02-25 2022-02-25 磁気吸着装置

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WO2023162279A1 true WO2023162279A1 (fr) 2023-08-31

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JP (1) JP2023124431A (fr)
TW (1) TW202335001A (fr)
WO (1) WO2023162279A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510326Y2 (fr) * 1988-02-26 1993-03-15
JPH0817624A (ja) * 1994-06-29 1996-01-19 Sagami Kagaku Kinzoku:Kk 磁石ホルダ
JP2005019551A (ja) * 2003-06-24 2005-01-20 Kanetec Co Ltd 磁気吸着装置及びその製造方法並びに磁気装置
JP2021138518A (ja) * 2020-03-06 2021-09-16 カネテック株式会社 マグネットホルダ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510326Y2 (fr) * 1988-02-26 1993-03-15
JPH0817624A (ja) * 1994-06-29 1996-01-19 Sagami Kagaku Kinzoku:Kk 磁石ホルダ
JP2005019551A (ja) * 2003-06-24 2005-01-20 Kanetec Co Ltd 磁気吸着装置及びその製造方法並びに磁気装置
JP2021138518A (ja) * 2020-03-06 2021-09-16 カネテック株式会社 マグネットホルダ

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TW202335001A (zh) 2023-09-01

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