WO2010055827A1 - Dispositif électromagnétique - Google Patents

Dispositif électromagnétique Download PDF

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Publication number
WO2010055827A1
WO2010055827A1 PCT/JP2009/069115 JP2009069115W WO2010055827A1 WO 2010055827 A1 WO2010055827 A1 WO 2010055827A1 JP 2009069115 W JP2009069115 W JP 2009069115W WO 2010055827 A1 WO2010055827 A1 WO 2010055827A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
frame
magnetic
electromagnet device
magnet
Prior art date
Application number
PCT/JP2009/069115
Other languages
English (en)
Japanese (ja)
Inventor
竜一 中野
寿博 児玉
潤 山川
伸夫 鈴木
一弘 福島
吉廣 池野
Original Assignee
株式会社明電舎
富士電機システムズ株式会社
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 株式会社明電舎, 富士電機システムズ株式会社 filed Critical 株式会社明電舎
Priority to CN200980144788.0A priority Critical patent/CN102217012B/zh
Publication of WO2010055827A1 publication Critical patent/WO2010055827A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet

Definitions

  • the present invention relates to an electromagnet device, and more particularly to a permanent magnet attached to an electromagnet and a magnet holder for holding a magnetic short-circuit piece.
  • a switch has a pair of electrodes consisting of a fixed electrode and a movable electrode inside, and on / off control of the switch is executed by control of an electromagnet device.
  • the electromagnet device includes an exciting coil, an iron core, a frame, and the like, and the mover is thrown to the fixed side by a magnetic attractive force generated when an exciting current is passed through the exciting coil.
  • a constant excitation a mechanical latch and a magnetic latch are known.
  • Patent Document 1 is known as a technique for preventing this.
  • a permanent magnet is provided in addition to the exciting coil, and the closing state is maintained by the magnetic attractive force of the permanent magnet.
  • the switch is shifted to the closing state, the energization of the exciting coil is stopped, Energy saving is achieved by maintaining the closing state by the electromagnetic attractive force of the permanent magnet.
  • a relatively small permanent magnet is installed between the frame and the mover to suppress the size of the electromagnet device, and it can be used for both the normal excitation type and the electromagnetic latch type with one electromagnet device.
  • Applicants have proposed an electromagnet device that is easy to use.
  • the permanent magnet is clamped and fixed by some means at the time of assembly in order to prevent the permanent magnet from falling off due to vibration or the like. Permanent magnets have a problem that the magnetic force is rapidly lowered due to pressure due to tightening or displacement due to vibration.
  • an object of the present invention is to provide an electromagnet device that holds a permanent magnet without applying pressure and does not cause positional displacement due to vibration.
  • the present invention relates to an electromagnet apparatus in which an electromagnet having an excitation coil, a stator, and a mover fixed to a movable shaft is housed in a frame, and a permanent magnet is disposed in a magnetic circuit formed by energizing the excitation coil.
  • a magnet holder made of a non-magnetic material is provided on the left and right of the electromagnet device and between the frame and the excitation coil, and the magnet holder is formed in a frame shape that is equal to or slightly thicker than the thickness of the permanent magnet
  • the magnet holder is provided with a fixed arm continuously provided on one edge along the frame-shaped center line and having a fixing hole, and the fixed arm is vertically opposed to the fixed arm via a hollow portion.
  • One end of the permanent magnet and one of the magnetic short-circuiting pieces are inserted into each of the support pieces that are connected to one edge of the shape and the other end is opened, and the opposing faces of the support pieces and the frame-like edge. It is characterized by providing a space that can be used.
  • the frame of the present invention is characterized in that a notch is provided at a position where the open end of each support piece faces from the outside.
  • a stopper is provided on the open end side of each support piece of the present invention.
  • a permanent magnet or a magnetic short-circuit piece is inserted and held in a space formed in the magnet holder.
  • the permanent magnet since the permanent magnet is inserted into the magnet holder space, it is possible to prevent displacement due to vibration.
  • the permanent magnet and the magnetic short-circuiting piece can be easily replaced after the assembly of the electromagnet device by providing an opening in the frame where the open end of the support piece of the attached magnet holder faces from the outside. is there.
  • the front view of the electromagnet apparatus which shows the Example of this invention The side view of the partial see-through
  • FIG. 1 to 3 are configuration diagrams of the present invention
  • FIG. 1 is a front view
  • FIG. 2 is a partial perspective view seen from the side of FIG. 1
  • FIG. 3 is a sectional view seen from the side.
  • 1 is a movable shaft having screws installed at both ends
  • 2 is a stator formed in a cylindrical shape.
  • One end of the movable shaft 1 passes through a hole of the stator 2.
  • Reference numeral 3 denotes a mover fixed to the movable shaft 1, and a blocking spring 4 is press-fitted between the mover 3 and the stator 2 so as to always separate the mover and the stator.
  • a coil frame 5 surrounds the stator 2, the mover 3, and the cutoff spring 4, and an exciting coil 6 is wound in the frame.
  • Reference numeral 7 denotes a frame, one end of which is formed in a U shape having a bottomed shape. A hole 7a is formed in the center of the bottom, and one end of the movable shaft 1 is
  • Reference numeral 8 denotes an end plate formed in a U-shape with a bottom having a hole at the center as in the frame
  • 9 is a frame face plate (frame) which penetrates the other end of the movable shaft 1 and Covering from the opposite side, it is integrally fixed to the frame 7 with bolts 21 with an end plate 8 and a magnet holder 10 described later interposed therebetween.
  • the frame face plate 9 is provided with a notched opening at a position where the holding position of the support piece of the magnet holder 10 and the permanent magnet can be seen from the outside.
  • Reference numeral 22 denotes a support cylinder, and the edge surface of the hole of the end plate 8 is fitted into one end thereof.
  • the movable element 3 is movably inserted into the cylinder of the support cylinder 22.
  • Reference numeral 23 denotes a stop plate, which is fixed to the movable shaft 1 with a nut 24 so as to form a movable width L between the stop plate 23 and the inner wall of the frame face plate 9.
  • Reference numeral 25 denotes an operation display body, and 26 denotes a permanent magnet held by the magnet holder 10. The permanent magnet is inserted into the magnetic circuit of the electromagnet and generates a magnetic force for maintaining the contact state between the stator 2 and the mover 3.
  • FIG. 4 shows the magnet holder 10, which is formed in a frame shape.
  • the magnet holder 10 is made of resin (plastic) and holds a permanent magnet and a magnetic short-circuit piece.
  • a fixed arm 12 is continuously provided at one edge of the frame 11 at a position along the center line.
  • a hole 12a is provided at the tip position.
  • Reference numerals 14 (14a, 14b) denote support pieces, which protrude from a position facing the fixed arm 12 through the hollow portion 13, and a stopper 15 is provided at the opened tip.
  • a space 16 (16a, 16b) having heights h1 and h2 is provided between the upper and lower edges constituting the frame 11 and the support pieces 14.
  • the support piece 14 has a spring characteristic in the direction of the center line with the side connected to the frame 11 as a fulcrum.
  • a permanent magnet 26 is inserted and inserted into the gap 16 at a height h 1, and a magnetic short-circuit piece 27 is inserted into the gap 16 in the range of heights h 1 to h 2.
  • the permanent magnet 26 is inserted into the gap 16a, and the magnetic short-circuit piece 27 is inserted into the gap 16b.
  • the insertion position is arbitrarily selected depending on the application.
  • the thickness of the magnet holder 10 is equal to or slightly thicker than that of the permanent magnet 26 and is configured so that no pressure is applied to the permanent magnet due to mounting, thereby preventing changes in the characteristics of the permanent magnet 26 due to pressure.
  • the notches 11a and 11b of the frame 11 are for penetration of fixing bolts.
  • the magnet holder 10 is arranged on the left and right of the electromagnet as shown in FIG. At that time, a bolt 21 is passed through the hole 12 a of the fixed arm 12, and the bolt 21 is fixed by screwing with a screw provided on the end plate 8. Further, other fixing bolts are passed through the notches 11a and 11b of the magnet holder.
  • the magnet holder 10 attached to the electromagnet is in a state where the tips of the support pieces 14a and 14b can be seen, and the tips of the support pieces 14a and 14b are bent in the direction of the center line, so The magnet 26 and the magnetic short-circuit piece 27 can be easily attached to and removed from the gaps 16a and 16b.
  • the magnetic attraction force can be adjusted by switching the permanent magnet 26 and the magnetic short-circuit piece 27.
  • two electromagnetism devices can be appropriately switched between the normal excitation mode and the electromagnetic latch mode.
  • Can be used for The attached permanent magnet 26 and magnetic short-circuit piece 27 will not fall off due to vibration or the like due to the restoring force of the support pieces 14 a and 14 b and the stopper 15.
  • the stop plate 23 fixed to the movable shaft 1 by the repulsive force of the cutoff spring 4 is the inner wall of the frame face plate 9 as indicated by a chain line.
  • the switch connected to the movable shaft 1 in a state where the stator 2 and the movable element 3 are separated from each other is in a cut-off state.
  • the magnetic flux from the permanent magnet 26 in the interrupted state flows through a magnetic circuit formed by the permanent magnet 26 ⁇ the end plate 8 ⁇ the support cylinder 22 ⁇ the movable element 3 ⁇ the stop plate 23 ⁇ the frame face plate 9 ⁇ the frame 7 ⁇ the permanent magnet 26.
  • the permanent magnet and the magnetic short-circuit piece used in the electromagnet device are inserted and held in the space of the magnet holder, so that the position does not shift due to vibration, and Since no pressure is applied to fix the permanent magnet, it is possible to prevent changes in magnetic characteristics.
  • the movable end of the support piece that holds the permanent magnet and magnetic short-circuit piece can be operated from the front position of the electromagnet device, making it easy to adjust the magnetic attractive force by replacing the permanent magnet and magnetic short-circuit piece from the outside. It becomes possible.
  • the permanent magnet and the magnetic short-circuiting piece are attached to and detached from the magnet holder, it can be easily done because it does not apply other than the attractive force of the permanent magnet.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

L'invention vise à résoudre un problème selon lequel une force magnétique se détériore en une plus courte durée en raison d'une pression de fixation appliquée à un aimant permanent et d'un décalage de la position de l'aimant permanent dû à une vibration au moment de l'assemblage d'un dispositif électromagnétique auquel est attaché l'aimant permanent. À cet effet, l'invention porte sur un porte-aimant en forme de cadre composé d'un matériau non magnétique. Le porte-aimant est formé avec une épaisseur équivalente ou légèrement supérieure à celle de l'aimant permanent, et comprend un bras de fixation, qui est relié à un bord du corps en forme de cadre le long de la ligne centrale de celui-ci et comprend un trou de fixation. En outre, des pièces de support sont agencées pour faire face au bras de fixation avec une section creuse entre eux, de telle manière que les extrémités des pièces de support d'un côté sont reliées au bord du corps en forme de cadre et que les autres extrémités sont dans l'état ouvert. Sur la surface où chaque pièce de support et le bord en forme de cadre se font face, un espace est formé dans lequel l'aimant permanent ou une pièce de court-circuit magnétique est logé et inséré.
PCT/JP2009/069115 2008-11-11 2009-11-10 Dispositif électromagnétique WO2010055827A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200980144788.0A CN102217012B (zh) 2008-11-11 2009-11-10 电磁铁装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008288451A JP5030923B2 (ja) 2008-11-11 2008-11-11 電磁石装置
JP2008-288451 2008-11-11

Publications (1)

Publication Number Publication Date
WO2010055827A1 true WO2010055827A1 (fr) 2010-05-20

Family

ID=42169962

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/069115 WO2010055827A1 (fr) 2008-11-11 2009-11-10 Dispositif électromagnétique

Country Status (3)

Country Link
JP (1) JP5030923B2 (fr)
CN (1) CN102217012B (fr)
WO (1) WO2010055827A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6198449B2 (ja) * 2013-05-07 2017-09-20 三菱電機株式会社 電磁石装置
CN108265417A (zh) * 2018-03-30 2018-07-10 苏州胜璟电磁科技有限公司 一种缝纫机用电磁铁

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273704A (ja) * 1986-05-21 1987-11-27 Kamiya Denshi Kogyo Kk サイドホルダ付揺動式アクチユエ−タ
JPH0221606A (ja) * 1988-07-08 1990-01-24 Matsushita Electric Works Ltd 電磁石装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2425414Y (zh) * 2000-04-29 2001-03-28 山东省三环制锁集团公司 脉冲自保持电磁铁
JP4492118B2 (ja) * 2003-12-16 2010-06-30 株式会社安川電機 リニアモータおよび吸引力相殺形リニアモータ
CN100397759C (zh) * 2004-03-29 2008-06-25 永大机电工业股份有限公司 外转式永磁电机
CN100530467C (zh) * 2007-08-20 2009-08-19 北京交通大学 单稳态自锁式变气隙永磁操动机构

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273704A (ja) * 1986-05-21 1987-11-27 Kamiya Denshi Kogyo Kk サイドホルダ付揺動式アクチユエ−タ
JPH0221606A (ja) * 1988-07-08 1990-01-24 Matsushita Electric Works Ltd 電磁石装置

Also Published As

Publication number Publication date
CN102217012B (zh) 2013-08-21
CN102217012A (zh) 2011-10-12
JP2010118375A (ja) 2010-05-27
JP5030923B2 (ja) 2012-09-19

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