WO2024009559A1 - Dispositif d'électroaimant à courant continu polarisé et contacteur électromagnétique - Google Patents

Dispositif d'électroaimant à courant continu polarisé et contacteur électromagnétique Download PDF

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Publication number
WO2024009559A1
WO2024009559A1 PCT/JP2023/008357 JP2023008357W WO2024009559A1 WO 2024009559 A1 WO2024009559 A1 WO 2024009559A1 JP 2023008357 W JP2023008357 W JP 2023008357W WO 2024009559 A1 WO2024009559 A1 WO 2024009559A1
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WO
WIPO (PCT)
Prior art keywords
depth direction
inner yoke
polarized
yoke
armature
Prior art date
Application number
PCT/JP2023/008357
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English (en)
Japanese (ja)
Inventor
優志 関谷
幸悦 高谷
大史 和賀井
Original Assignee
富士電機機器制御株式会社
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 富士電機機器制御株式会社 filed Critical 富士電機機器制御株式会社
Priority to JP2023574773A priority Critical patent/JPWO2024009559A1/ja
Publication of WO2024009559A1 publication Critical patent/WO2024009559A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings

Definitions

  • the present invention relates to a polarized DC electromagnet device and an electromagnetic contactor.
  • a polarized DC electromagnet device for an electromagnetic contactor opens and closes a contact by driving a plunger, and a permanent magnet and an inner yoke are provided inside an outer yoke. There is.
  • the permanent magnet has the function of holding the plunger in position by attracting the armature to the inner yoke when it is not energized.
  • the inner yoke is supported by fitting its upper and lower ends onto the spool, but due to vibrations and shocks during assembly, as well as the attraction force when the permanent magnet and the outer yoke are brought close together, the inner yoke may cause damage to the spool. There was a possibility that it would fall off or become misaligned.
  • An object of the present invention is to suppress the inner yoke from falling off or shifting during assembly in a polarized DC electromagnet device.
  • a polarized DC electromagnet device includes a spool and an inner yoke.
  • the spool has a coil wound around a cylindrical portion extending in the depth direction, and flanges are formed on both sides of the cylindrical portion in the depth direction.
  • the inner yoke is formed into a flat plate shape extending parallel to the depth direction, and edges on both sides in the depth direction are fitted into flanges.
  • the flange is formed with a claw portion that holds the fitted inner yoke.
  • An electromagnetic contactor includes a polarized DC electromagnet device, and the contacts are opened and closed by the polarized DC electromagnet device.
  • the inner yoke is held by the claws, it is possible to suppress the inner yoke from falling off or shifting during assembly.
  • FIG. 3 is a diagram showing a polarized DC electromagnet device.
  • FIG. 2 is a cross-sectional view showing a polarized DC electromagnet device. It is a figure showing a spool and a claw part on the near side in the depth direction. It is a figure which shows the spool and the claw part on the back side in the depth direction. It is a figure showing an inner yoke and a permanent magnet. It is a figure showing the state where an inner yoke is assembled to a spool. It is a figure showing a comparative example.
  • FIG. 1 is a diagram showing an electromagnetic contactor 11. As shown in FIG. Here, the electromagnetic contactor 11 is shown viewed from the other side in the vertical direction, one side in the width direction, and from the front in the depth direction.
  • the electromagnetic contactor 11 includes a lower frame 12 and an upper frame 13.
  • FIG. 2 is a diagram showing a polarized DC electromagnet device 21.
  • the polarized DC electromagnet device 21 is shown viewed from the other side in the vertical direction, one side in the width direction, and from the front in the depth direction.
  • the polarized DC electromagnet device 21 is housed inside the lower frame 12, and opens and closes the contacts by switching between de-energization and excitation.
  • FIG. 3 is a sectional view showing the polarized DC electromagnet device 21. As shown in FIG. Here, a cross section of the polarized DC electromagnet device 21 passing through the center in the width direction and along the vertical and depth directions is shown as viewed from one side in the width direction.
  • the polarized DC electromagnet device 21 includes a spool 22, a plunger 23, an upper armature 24 (first armature), a lower armature 25 (second armature), an outer yoke 26, an inner yoke 27, and a permanent magnet. 28 and a return spring 29.
  • the spool 22 is made of insulating resin, and has a coil 32 wound around a cylindrical portion 31 extending in the depth direction, and flanges 33 protruding in the radial direction are formed on both sides of the cylindrical portion 31 in the depth direction.
  • the plunger 23 is a cylindrical movable iron core, and is inserted into the cylindrical portion 31 of the spool 22 so as to be able to move back and forth in the axial direction.
  • the plunger 23 is longer than the cylindrical portion 31 in the axial direction.
  • the upper armature 24 is a substantially rectangular iron plate extending in the vertical and width directions when viewed from the depth direction, and is connected to the front end of the plunger 23 by, for example, caulking.
  • the lower armature 25 is a substantially rectangular iron plate extending in the vertical and width directions when viewed from the depth direction, and is connected to the end of the plunger 23 on the back side in the depth direction, for example, by caulking.
  • the outer yokes 26 are provided on one side and one on the other side in the longitudinal direction, and each is a substantially U-shaped yoke that opens inward in the longitudinal direction when viewed from the width direction.
  • the outer yoke 26 includes a side piece 36, an upper piece 37, and a lower piece 38.
  • the side piece portion 36 is formed in a plate shape along the width direction and the depth direction.
  • the upper piece part 37 projects inward in the vertical direction from the end of the side piece part 36 on the near side in the depth direction, and is formed in a plate shape along the vertical direction and the width direction.
  • the upper piece portion 37 is provided between the upper armature 24 and the flange 33 on the near side in the depth direction so as to be in contact with the flange 33.
  • the lower piece portion 38 protrudes inward in the vertical direction from the end on the back side in the depth direction of the side piece portion 36, and is formed in a plate shape along the vertical direction and the width direction.
  • the lower piece portion 38 is provided on the opposite side of the flange 33 on the back side in the depth direction with the lower armature 25 interposed therebetween.
  • the side piece 36, the upper piece 37, and the lower piece 38 are integrally formed by press working.
  • the inner yokes 27 are provided on one side and the other side in the vertical direction, and are flat yokes extending in the width direction and the depth direction, respectively.
  • the inner yoke 27 is supported by being fitted into the flanges 33 of the spool 22 on both sides in the depth direction.
  • the permanent magnet 28 is a substantially rectangular parallelepiped, and is interposed between the side piece 36 of the outer yoke 26 and the inner yoke 27 on the back side in the depth direction, and is attracted to both the side piece 36 and the inner yoke 27. Fixed.
  • the permanent magnet 28 has, for example, a north pole on the outside and a south pole on the inside.
  • the return spring 29 is interposed between the inner bottom surface of the lower frame 12 and the lower armature 25, and urges the plunger 23 toward the front side in the depth direction via the lower armature 25.
  • the plunger 23 when the coil 32 is in a non-excited state where no current is applied, the plunger 23 is displaced toward the front side in the depth direction due to the magnetic force of the permanent magnet 28 and the repulsive force of the return spring 29.
  • the magnetic flux of the permanent magnet 28 passes through the outside of the permanent magnet 28, the side piece 36, the upper piece 37, the plunger 23, the lower armature 25, and the inner yoke 27 in this order, and reaches the inside of the permanent magnet 28.
  • the lower armature 25 is attracted to the lower end of the inner yoke 27 by this closed-loop magnetic circuit.
  • the contact opens via the contact support (not shown) and enters the released state.
  • the upper armature 24 is separated from the upper piece part 37, and the lower armature 25 is separated from the lower piece part 38.
  • the upper armature 24 is attracted to the upper piece 37, and the lower armature 25 is attracted to the lower piece 38.
  • the contact is closed via the contact support (not shown), and the closed state is established.
  • the lower armature 25 is spaced apart from the lower end of the inner yoke 27.
  • FIG. 4 is a diagram showing the spool 22 and the claw portion 41 on the front side in the depth direction.
  • (a) in the figure shows the state in which the spool 22 is viewed from the other side in the vertical direction, one side in the width direction, and from the back in the depth direction.
  • a claw portion 41 for holding the inner yoke 27 is formed on the flange 33 of the spool 22 .
  • the claw portions 41 include one on one side in the width direction on one side in the vertical direction, one on one side in the other width direction on one side in the vertical direction, one on one side in the width direction on the other side in the vertical direction, and one on one side in the width direction on the other side in the vertical direction. There is one on the other side in the width direction, making a total of four.
  • the two claw portions 41 provided on one side in the vertical direction and the two claw portions 41 provided on the other side in the vertical direction are each formed at the same position when viewed from the width direction.
  • the flange 33 includes an inner end surface 42 and a bottom surface 43.
  • the inner end surface 42 faces outward in the vertical direction, and the bottom surface 43 faces inward in the depth direction.
  • the claw portion 41 includes an outer end surface 44 and an inclined surface 45.
  • the outer end surface 44 faces the inner end surface 42 with an opening equal to the thickness of the inner yoke 27, and the inclined surface 45 faces inward in the depth direction and outward in the longitudinal direction.
  • the depth dimension of the outer end surface 44 corresponds to the height of the claw portion 41, and is set smaller than the depth dimension of the inner end surface 42.
  • the edge of the inner yoke 27 is fitted into the groove 46 formed by the inner end surface 42, the bottom surface 43, and the outer end surface 44.
  • FIG. 5 is a diagram showing the spool 22 and the claw portion 51 on the back side in the depth direction.
  • (a) in the figure shows the spool 22 viewed from the other side in the vertical direction, one side in the width direction, and from the front in the depth direction.
  • a claw portion 51 for holding the inner yoke 27 is formed on the flange 33 of the spool 22 on the back side in the depth direction.
  • the claw portions 51 include one on one side in the width direction on one side in the longitudinal direction, one on one side in the other width direction on one side in the longitudinal direction, one on one side in the width direction on the other side in the longitudinal direction, and one on one side in the width direction on the other side in the longitudinal direction.
  • the two claw portions 51 provided on one side in the vertical direction and the two claw portions 51 provided on the other side in the vertical direction are each formed at the same position when viewed from the width direction.
  • Each claw portion 51 is formed at the same position as each claw portion 41 when viewed from the depth direction.
  • the flange 33 includes an inner end surface 52 and a bottom surface 53.
  • the inner end surface 52 faces outward in the vertical direction, and the bottom surface 53 faces inward in the depth direction.
  • the claw portion 51 includes an outer end surface 54 and an inclined surface 55.
  • the outer end surface 54 faces the inner end surface 52 with an opening equal to the thickness of the inner yoke 27, and the inclined surface 55 faces inward in the depth direction and outward in the longitudinal direction.
  • the depth dimension of the outer end surface 54 corresponds to the height of the claw portion 51, and is set smaller than the depth dimension of the inner end surface 52.
  • the edge of the inner yoke 27 is fitted into the groove 56 formed by the inner end surface 52, the bottom surface 53, and the outer end surface 54.
  • FIG. 6 is a diagram showing the inner yoke 27 and the permanent magnet 28.
  • (a) in the figure shows the inner yoke 27 viewed from the outside in the vertical direction, from one side in the width direction, and from the front in the depth direction.
  • the four corners of the inner yoke 27 when viewed from the vertical direction become edges 61 that fit into the grooves 46 and 56.
  • a space between the edge portions 61 on the back side in the depth direction protrudes toward the back side in the depth direction, and the lower armature 25 is attracted to the lower end portion 62 of the inner yoke 27.
  • An opening 63 is formed in the inner yoke 27 on the front side in the depth direction.
  • the opening 63 has a substantially rectangular shape when viewed from the vertical direction, and passes through the inner yoke 27 in the vertical direction.
  • the inner yoke 27 has two convex portions 64 formed on the inner side in the depth direction of the wall surface facing outward in the vertical direction.
  • (b) in the figure shows the permanent magnet 28 viewed from inside in the vertical direction, from one side in the width direction, and from the front in the depth direction.
  • the permanent magnet 28 has two recesses 65 that fit into the protrusions 64 on a wall surface facing inward in the vertical direction. Therefore, when the permanent magnet 28 is attracted to the inner yoke 27, the pair of concave portions 65 fit into the pair of convex portions 64, thereby positioning the permanent magnet 28.
  • FIG. 7 is a diagram showing a state in which the inner yoke 27 is assembled to the spool 22.
  • (a) in the figure shows the state in which the spool 22 into which the inner yoke 27 is fitted is viewed from one side in the width direction.
  • (b) in the figure shows the state in which the spool 22 into which the inner yoke 27 is fitted is viewed from the other side in the vertical direction.
  • the coil 32 is omitted here.
  • the inner yoke 27 is fitted between the flanges 33, and the four corners viewed from the vertical direction are held by the claws 41 and 51.
  • the edge 61 of the inner yoke 27 comes into contact with the sloped surface 45 and the sloped surface 55, but by pushing it hard, the resin flange 33 bends, and the inner yoke fits into the groove 46 and groove 56.
  • the edge 61 of 27 is fitted.
  • the permanent magnet 28 is attached to the inner yoke 27, and the outer yoke 26 is attached to the spool 22.
  • the polarized DC electromagnet device 21 includes a spool 22 and an inner yoke 27.
  • a coil 32 is wound around a cylindrical portion 31 extending in the depth direction, and flanges 33 are formed on both sides of the cylindrical portion 31 in the depth direction.
  • the inner yoke 27 is formed into a flat plate shape extending parallel to the depth direction, and edges 61 on both sides in the depth direction are fitted into the flanges 33.
  • the flange 33 is formed with a claw portion 41 and a claw portion 51 that hold the fitted inner yoke 27. Therefore, since the inner yoke 27 is held by the claws 41 and 51, it is possible to prevent the inner yoke 27 from falling off or shifting during assembly.
  • the polarized DC electromagnet device 21 includes a plunger 23, an upper armature 24, a lower armature 25, an outer yoke 26, and a permanent magnet 28.
  • Plunger 23 is inserted into cylindrical portion 31 .
  • the upper armature 24 is connected to the front side of the plunger 23 in the depth direction.
  • the lower armature 25 is connected to the back side of the plunger 23 in the depth direction.
  • the outer yoke 26 is formed in a U-shape, and one end is disposed on the near side in the depth direction between the upper armature 24 and the flange 33, and the other end is disposed on the back side in the depth direction between the flange 33 and the lower armature 25.
  • the center thereof faces the inner yoke 27.
  • Permanent magnet 28 is provided between inner yoke 27 and outer yoke 26.
  • the lower armature 25 is attracted to the inner yoke 27 by the permanent magnet 28.
  • the upper armature 24 is attracted to one end of the outer yoke 26, and the lower armature 25 is attracted to the other end of the outer yoke 26. Therefore, by switching between de-energization and excitation, the plunger 23 can be moved forward and backward to open and close the contacts.
  • the permanent magnet 28 is arranged on the back side of the inner yoke 27 in the depth direction. By arranging the permanent magnet 28 on the back side in the depth direction, the attraction force to the lower armature 25 at the lower end portion 62 of the inner yoke 27 can be increased. An opening 63 is formed in the inner yoke 27 on the front side in the depth direction. Thereby, the weight of the polarized DC electromagnet device 21 can be reduced.
  • the flange 33 includes an inner end surface 42 (or 52) and a bottom surface 43 (or 53).
  • the inner end surface 42 (or 52) faces outward in the vertical direction orthogonal to the depth direction.
  • the bottom surface 43 (or 53) faces inward in the depth direction.
  • the claw portion 41 (or 51) includes an outer end surface 44 (or 54) and an inclined surface 45 (or 55).
  • the outer end surface 44 (or 54) faces the inner end surface 42 (or 52) with an opening equal to the thickness of the inner yoke 27.
  • the inclined surface 45 (or 55) faces inward in the depth direction and outward in the longitudinal direction.
  • the edge 61 of the inner yoke 27 is fitted into a groove 46 (or 56) formed by the inner end surface 42 (or 52), the bottom surface 43 (or 53), and the outer end surface 44 (or 54). As a result, the edge 61 of the inner yoke 27 is held by the grooves 46 and 56, so that it is possible to prevent the inner yoke 27 from falling off or shifting during assembly.
  • the electromagnetic contactor 11 includes a polarized DC electromagnet device 21, and the polarized DC electromagnet device 21 opens and closes the contacts. Therefore, it is possible to provide the electromagnetic contactor 11 in which the inner yoke 27 is prevented from falling off or being displaced during assembly.
  • FIG. 8 is a diagram showing a comparative example.
  • the comparative example is the same as the above-described embodiment except that the claw portion 41 and the claw portion 51 are omitted, so common parts are denoted by the same reference numerals and detailed description thereof will be omitted.
  • the inner yoke 27 is supported by fitting its upper and lower ends into the flange 33 of the spool 22. That is, the upper end is supported by the inner corner of the inner end surface 42 and the bottom surface 43, and the lower end is supported by the inner corner of the inner end surface 52 and the bottom surface 53.
  • the inner yoke 27 may fall off or become misaligned with respect to the spool 22 due to vibrations and shocks during assembly, or due to the attractive force when the permanent magnet 28 and the outer yoke 26 are brought close to each other.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

Dans une bobine (22), une bobine (32) est enroulée autour d'une partie cylindrique (31) s'étendant dans le sens de la profondeur et des brides (33) sont formées sur les deux côtés de la partie cylindrique (31) dans le sens de la profondeur. Une culasse interne (27) se présente sous la forme d'une plaque plate s'étendant parallèlement au sens de la profondeur et des parties de bord (61) sur les deux côtés dans le sens de la profondeur sont ajustées aux brides (33). Dans les brides (33), des parties griffes (41) et des parties griffes (51) pour maintenir la culasse interne ajustée (27) sont formées.
PCT/JP2023/008357 2022-07-08 2023-03-06 Dispositif d'électroaimant à courant continu polarisé et contacteur électromagnétique WO2024009559A1 (fr)

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JP2023574773A JPWO2024009559A1 (fr) 2022-07-08 2023-03-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-110767 2022-07-08
JP2022110767 2022-07-08

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WO2024009559A1 true WO2024009559A1 (fr) 2024-01-11

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PCT/JP2023/008357 WO2024009559A1 (fr) 2022-07-08 2023-03-06 Dispositif d'électroaimant à courant continu polarisé et contacteur électromagnétique

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175949A (fr) * 1974-11-20 1976-06-30 Siemens Ag
JP2005308040A (ja) * 2004-04-20 2005-11-04 Nachi Fujikoshi Corp 電磁弁
JP2011028900A (ja) * 2009-07-22 2011-02-10 Panasonic Electric Works Co Ltd 電磁継電器
JP2011249137A (ja) * 2010-05-26 2011-12-08 Panasonic Electric Works Co Ltd リモコンリレー
JP2018049859A (ja) * 2016-09-20 2018-03-29 日立オートモティブシステムズ株式会社 コイル組立体およびブレーキ制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5175949A (fr) * 1974-11-20 1976-06-30 Siemens Ag
JP2005308040A (ja) * 2004-04-20 2005-11-04 Nachi Fujikoshi Corp 電磁弁
JP2011028900A (ja) * 2009-07-22 2011-02-10 Panasonic Electric Works Co Ltd 電磁継電器
JP2011249137A (ja) * 2010-05-26 2011-12-08 Panasonic Electric Works Co Ltd リモコンリレー
JP2018049859A (ja) * 2016-09-20 2018-03-29 日立オートモティブシステムズ株式会社 コイル組立体およびブレーキ制御装置

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