WO2024009559A1 - Polarized dc electromagnet device and electromagnetic contactor - Google Patents

Polarized dc electromagnet device and electromagnetic contactor 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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WIPO (PCT)
Prior art keywords
depth direction
inner yoke
polarized
yoke
armature
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PCT/JP2023/008357
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French (fr)
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
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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/JP7517624B2/en
Priority to CN202380015752.2A priority patent/CN118451518A/en
Publication of WO2024009559A1 publication Critical patent/WO2024009559A1/en

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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

In a spool (22), a coil (32) is wound around a cylindrical portion (31) extending in a depth direction and flanges (33) are formed on both sides of the cylindrical portion (31) in the depth direction. An inner yoke (27) is formed in a flat-plate shape extending in parallel to the depth direction and edge portions (61) on both sides in the depth direction are fitted to the flanges (33). In the flanges (33), claw portions (41) and claw portions (51) for holding the fitted inner yoke (27) are formed.

Description

有極直流電磁石装置、電磁接触器Polarized DC electromagnet device, electromagnetic contactor
　本発明は、有極直流電磁石装置、電磁接触器に関するものである。 The present invention relates to a polarized DC electromagnet device and an electromagnetic contactor.
　特許文献１に示されるように、電磁接触器の有極直流電磁石装置は、プランジャを駆動して接点の開閉を行なうものであり、外ヨークの内側には、永久磁石及び内ヨークが設けられている。永久磁石には、非励磁のときにアーマチュアを内ヨークに吸着させて、プランジャの位置を保持する機能がある。 As shown in Patent Document 1, 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.
国際公開第２０１５／１７７９６０号International Publication No. 2015/177960
　内ヨークは、その上端と下端をスプールに嵌め合わせて支持することになるが、組立時における振動や衝撃、また永久磁石や外ヨークを近づけたときの吸引力によって、スプールに対して内ヨークに脱落や位置ずれが生じる可能性があった。
　本発明の目的は、有極直流電磁石装置において、組立時における内ヨークの脱落や位置ずれを抑制することである。 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.
　本発明の一態様に係る有極直流電磁石装置は、スプールと、内ヨークと、を備える。スプールは、奥行方向に延びる円筒部にコイルが巻かれ、円筒部における奥行方向の両側にフランジが形成されている。内ヨークは、奥行方向と平行に延びる平板状に形成され、奥行方向における両側の縁部がフランジに嵌め込まれている。フランジには、嵌め込まれた内ヨークを保持する爪部が形成されている。
　本発明の他の態様に係る電磁接触器は、有極直流電磁石装置を備え、有極直流電磁石装置によって接点の開閉が行われる。 A polarized DC electromagnet device according to one aspect of the present invention 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 according to another aspect of the present invention includes a polarized DC electromagnet device, and the contacts are opened and closed by the polarized DC electromagnet device.
　本発明によれば、内ヨークが爪部によって保持されるため、組立時における内ヨークの脱落や位置ずれを抑制することができる。 According to the present invention, since the inner yoke is held by the claws, it is possible to suppress the inner yoke from falling off or shifting during assembly.
電磁接触器を示す図である。It is a figure showing an electromagnetic contactor. 有極直流電磁石装置を示す図である。FIG. 3 is a diagram showing a polarized DC electromagnet device. 有極直流電磁石装置を示す断面図である。FIG. 2 is a cross-sectional view showing a polarized DC electromagnet device. スプール及び奥行方向手前側の爪部を示す図である。It is a figure showing a spool and a claw part on the near side in the depth direction. スプール及び奥行方向奥側の爪部を示す図である。It is a figure which shows the spool and the claw part on the back side in the depth direction. 内ヨーク及び永久磁石を示す図である。It is a figure showing an inner yoke and a permanent magnet. スプールに内ヨークを組み付けた状態を示す図である。It is a figure showing the state where an inner yoke is assembled to a spool. 比較例を示す図である。It is a figure showing a comparative example.
　以下、本発明の実施形態を図面に基づいて説明する。なお、各図面は模式的なものであって、現実のものとは異なる場合がある。また、以下の実施形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであり、構成を下記のものに特定するものでない。すなわち、本発明の技術的思想は、請求の範囲に記載された技術的範囲内において、種々の変更を加えることができる。 Hereinafter, embodiments of the present invention will be described based on the drawings. Note that each drawing is schematic and may differ from the actual drawing. Furthermore, the following embodiments are intended to exemplify devices and methods for embodying the technical idea of the present invention, and the configuration is not limited to the following. That is, the technical idea of the present invention can be modified in various ways within the technical scope described in the claims.
《実施形態》
　《構成》
　以下の説明では、互いに直交する三方向を、便宜的に、縦方向、幅方向、及び奥行方向とする。
　図１は、電磁接触器１１を示す図である。
　ここでは、電磁接触器１１を、縦方向の他方、幅方向の一方、及び奥行方向の手前から見た状態を示す。電磁接触器１１は、下部フレーム１２と、上部フレーム１３と、を備えている。 《Embodiment》
"composition"
In the following description, for convenience, three mutually orthogonal directions are referred to as a vertical direction, a width direction, and a depth direction.
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.
　図２は、有極直流電磁石装置２１を示す図である。
　ここでは、有極直流電磁石装置２１を、縦方向の他方、幅方向の一方、及び奥行方向の手前から見た状態を示す。有極直流電磁石装置２１は、下部フレーム１２の内側に収容されており、非励磁と励磁を切り替えることで接点の開閉を行なう。
　図３は、有極直流電磁石装置２１を示す断面図である。
　ここでは、幅方向の中心を通り、縦方向及び奥行方向に沿った有極直流電磁石装置２１の断面を、幅方向の一方から見た状態を示す。有極直流電磁石装置２１は、スプール２２と、プランジャ２３と、上部アーマチュア２４（第一のアーマチュア）と、下部アーマチュア２５（第二のアーマチュア）と、外ヨーク２６と、内ヨーク２７と、永久磁石２８と、復帰スプリング２９と、を備えている。 FIG. 2 is a diagram showing a polarized DC electromagnet device 21. As shown in FIG.
Here, 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.
　スプール２２は、絶縁性を有する樹脂製であり、奥行方向に延びる円筒部３１にコイル３２が巻かれており、円筒部３１における奥行方向の両側に、径方向に突出したフランジ３３が形成されている。
　プランジャ２３は、円柱状の可動鉄心であり、軸方向に進退可能な状態でスプール２２の円筒部３１に挿入されている。プランジャ２３は、円筒部３１よりも軸方向に長い。
　上部アーマチュア２４は、奥行方向から見て略方形となる縦方向及び幅方向に沿った鉄板であり、プランジャ２３における奥行方向手前側の端部に、例えばカシメによって連結されている。
　下部アーマチュア２５は、奥行方向から見て略方形となる縦方向及び幅方向に沿った鉄板であり、プランジャ２３における奥行方向奥側の端部に、例えばカシメによって連結されている。 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. There is.
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.
　外ヨーク２６は、縦方向の一方及び他方に一つずつ設けられ、夫々、幅方向から見て縦方向の内側に向かって開いた略コ字状に形成された継鉄である。外ヨーク２６は、側片部３６と、上片部３７と、下片部３８と、を備えている。側片部３６は、幅方向及び奥行方向に沿った板状に形成されている。上片部３７は、側片部３６における奥行方向手前側の端部から縦方向の内側に向かって突出しており、縦方向及び幅方向に沿った板状に形成されている。上片部３７は、上部アーマチュア２４と奥行方向における手前側のフランジ３３との間で、フランジ３３に接するように設けられている。下片部３８は、側片部３６における奥行方向奥側の端部から縦方向の内側に向かって突出しており、縦方向及び幅方向に沿った板状に形成されている。下片部３８は、下部アーマチュア２５を挟んで奥行方向における奥側のフランジ３３と反対側に設けられている。側片部３６、上片部３７、及び下片部３８は、プレス加工によって一体成形されている。 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.
　内ヨーク２７は、縦方向の一方及び他方に一つずつ設けられ、夫々、幅方向及び奥行方向に沿った平板状の継鉄である。内ヨーク２７は、奥行方向における両側がスプール２２のフランジ３３に嵌め込まれて支持されている。
　永久磁石２８は、略直方体であり、奥行方向の奥側で外ヨーク２６の側片部３６と内ヨーク２７との間に介在して、側片部３６及び内ヨーク２７の双方に吸着して固定されている。永久磁石２８は、例えば外側をＮ極とし、内側をＳ極とする。
　復帰スプリング２９は、下部フレーム１２の内側底面と下部アーマチュア２５との間に介在し、下部アーマチュア２５を介してプランジャ２３を奥行方向の手前側へと付勢している。 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.
　上記の構成により、コイル３２に通電がない非励磁の状態では、永久磁石２８の磁力と復帰スプリング２９の反発力によって、プランジャ２３が奥行方向の手前側に変位した配置となる。永久磁石２８の磁束は、永久磁石２８の外側、側片部３６、上片部３７、プランジャ２３、下部アーマチュア２５、及び内ヨーク２７を順に経て、永久磁石２８の内側へと至る。この閉ループとなる磁気回路によって、下部アーマチュア２５が内ヨーク２７の下端に吸着される。こうして、プランジャ２３が奥行方向の手前側へと変位しているときに、図示しない接点支えを介して接点が開き、釈放状態となる。このとき、上片部３７に対して上部アーマチュア２４が離間し、且つ下片部３８に対して下部アーマチュア２５が離間している。 With the above configuration, 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. In this manner, when the plunger 23 is displaced toward the front side in the depth direction, the contact opens via the contact support (not shown) and enters the released state. At this time, 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.
　この状態から、コイル３２に通電され励磁されると、コイル３２の磁力によって、上片部３７に上部アーマチュア２４が吸着されると共に、下片部３８に下部アーマチュア２５が吸着される。これにより、プランジャ２３が永久磁石２８の磁力と復帰スプリング２９の反発力に逆らって奥行方向の奥側に変位した配置となる。コイル３２の磁束は、プランジャ２３における奥行方向の手前側、上部アーマチュア２４、上片部３７、側片部３６、下片部３８、及び下部アーマチュア２５を順に経て、プランジャ２３における奥行方向の奥側へと至る。この閉ループとなる磁気回路によって、上片部３７に上部アーマチュア２４が吸着されると共に、下片部３８に下部アーマチュア２５が吸着される。こうして、プランジャ２３が奥行方向の奥側へと変位しているときに、図示しない接点支えを介して接点が閉じ、投入状態となる。このとき、内ヨーク２７の下端に対して下部アーマチュア２５が離間している。 From this state, when the coil 32 is energized and excited, the upper armature 24 is attracted to the upper piece 37 and the lower armature 25 is attracted to the lower piece 38 due to the magnetic force of the coil 32. As a result, the plunger 23 is displaced toward the back in the depth direction against the magnetic force of the permanent magnet 28 and the repulsive force of the return spring 29. The magnetic flux of the coil 32 passes through the front side of the plunger 23 in the depth direction, the upper armature 24, the upper piece part 37, the side piece part 36, the lower piece part 38, and the lower armature 25 in this order, and then goes to the back side of the plunger 23 in the depth direction. leading to. Due to this closed loop magnetic circuit, the upper armature 24 is attracted to the upper piece 37, and the lower armature 25 is attracted to the lower piece 38. In this way, when the plunger 23 is displaced to the back side in the depth direction, the contact is closed via the contact support (not shown), and the closed state is established. At this time, the lower armature 25 is spaced apart from the lower end of the inner yoke 27.
　次に、内ヨーク２７の嵌め込みについて説明する。
　図４は、スプール２２及び奥行方向手前側の爪部４１を示す図である。
　図中の（ａ）は、スプール２２を、縦方向の他方、幅方向の一方、及び奥行方向の奥から見た状態を示す。奥行方向の手前側において、スプール２２のフランジ３３には、内ヨーク２７を保持する爪部４１が形成されている。爪部４１は、縦方向の一方で幅方向の一方に一つ、縦方向の一方で幅方向の他方に一つ、縦方向の他方で幅方向の一方に一つ、及び縦方向の他方で幅方向の他方に一つあり、計四つが形成されている。縦方向の一方に設けられた二つの爪部４１、及び縦方向の他方に設けられた二つの爪部４１は、夫々、幅方向から見て同じ位置に形成されている。 Next, fitting of the inner yoke 27 will be explained.
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. On the front side 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.
　図中の（ｂ）は、縦方向の他方で幅方向の一方に配置された爪部４１を、幅方向の一方から見た状態を示す。フランジ３３は、内側端面４２と、底面４３と、を備えている。内側端面４２は、縦方向の外側を向いており、底面４３は、奥行方向の内側を向いている。爪部４１は、外側端面４４と、傾斜面４５と、を備えている。外側端面４４は、内ヨーク２７の厚さ分を開けて内側端面４２に対向しており、傾斜面４５は、奥行方向の内側及び縦方向の外側を向いている。外側端面４４の奥行寸法は、爪部４１の高さとなり、内側端面４２の奥行寸法よりも小さく設定されている。内側端面４２、底面４３、及び外側端面４４によって構成される凹溝４６に、内ヨーク２７の縁部が嵌め込まれる。 (b) in the figure shows the claw portion 41 disposed on the other side in the vertical direction and on one side in the width direction, viewed from one side in 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.
　図５は、スプール２２及び奥行方向奥側の爪部５１を示す図である。
　図中の（ａ）は、スプール２２を、縦方向の他方、幅方向の一方、及び奥行方向の手前から見た状態を示す。奥行方向の奥側において、スプール２２のフランジ３３には、内ヨーク２７を保持する爪部５１が形成されている。爪部５１は、縦方向の一方で幅方向の一方に一つ、縦方向の一方で幅方向の他方に一つ、縦方向の他方で幅方向の一方に一つ、及び縦方向の他方で幅方向の他方に一つあり、計四つが形成されている。縦方向の一方に設けられた二つの爪部５１、及び縦方向の他方に設けられた二つの爪部５１は、夫々、幅方向から見て同じ位置に形成されている。各爪部５１は、奥行方向から見て各爪部４１と同じ位置に形成されている。 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. There is one on the other side in the width direction, making a total of four. 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.
　図中の（ｂ）は、縦方向の他方で幅方向の一方に配置された爪部５１を、幅方向の一方から見た状態を示す。フランジ３３は、内側端面５２と、底面５３と、を備えている。内側端面５２は、縦方向の外側を向いており、底面５３は、奥行方向の内側を向いている。爪部５１は、外側端面５４と、傾斜面５５と、を備えている。外側端面５４は、内ヨーク２７の厚さ分を開けて内側端面５２に対向しており、傾斜面５５は、奥行方向の内側及び縦方向の外側を向いている。外側端面５４の奥行寸法は、爪部５１の高さとなり、内側端面５２の奥行寸法よりも小さく設定されている。内側端面５２、底面５３、及び外側端面５４によって構成される凹溝５６に、内ヨーク２７の縁部が嵌め込まれる。 (b) in the figure shows the claw portion 51 disposed on the other side in the vertical direction and on one side in the width direction, as viewed from one side in the width 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.
　図６は、内ヨーク２７及び永久磁石２８を示す図である。
　図中の（ａ）は、内ヨーク２７を、縦方向の外側、幅方向の一方、及び奥行方向の手前から見た状態を示す。内ヨーク２７は、縦方向から見た四隅が、凹溝４６及び凹溝５６に嵌まり合う縁部６１となる。内ヨーク２７は、奥行方向奥側の縁部６１同士の間が奥行方向の奥側に突出しており、その下端部６２に下部アーマチュア２５が吸着される。内ヨーク２７には、奥行方向の手前側に開口部６３が形成されている。開口部６３は、縦方向から見て略方形であり、内ヨーク２７を縦方向に貫通している。内ヨーク２７には、縦方向の外側を向いた壁面のうち奥行方向の奥側に、二つの凸部６４が形成されている。
　図中の（ｂ）は、永久磁石２８を、縦方向の内側、幅方向の一方、及び奥行方向の手前から見た状態を示す。永久磁石２８には、縦方向の内側を向いた壁面に、凸部６４に嵌まり合う二つの凹部６５が形成されている。したがって、内ヨーク２７に永久磁石２８を吸着させるときに、一対の凸部６４に一対の凹部６５が嵌まり合うことで、永久磁石２８の位置決めがなされる。 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. In the inner yoke 27, 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.
　図７は、スプール２２に内ヨーク２７を組み付けた状態を示す図である。
　図中の（ａ）は、内ヨーク２７が嵌め合わされたスプール２２を、幅方向の一方から見た状態を示す。図中の（ｂ）は、内ヨーク２７が嵌め合わされたスプール２２を、縦方向の他方から見た状態を示す。ここでは、コイル３２を省略してある。内ヨーク２７は、フランジ３３同士の間に嵌め込まれており、縦方向から見た四隅が爪部４１及び爪部５１によって保持されている。内ヨーク２７を嵌め込む際、内ヨーク２７の縁部６１が傾斜面４５及び傾斜面５５に当接するが、強く押し込むことで樹脂製のフランジ３３が撓み、凹溝４６及び凹溝５６に内ヨーク２７の縁部６１が嵌まり込む。手作業の場合は、例えば奥行方向の奥側にある二つの凹溝５６に、二つの縁部６１を引っ掛けて、次いで奥行方向の手前側にある二つの凹溝４６に、残りの二つの縁部６１を押し込むとよい。スプール２２に内ヨーク２７を嵌め込んだら、内ヨーク２７に永久磁石２８を取り付け、そしてスプール２２に外ヨーク２６を取り付ける。 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. When fitting the inner yoke 27, 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. In the case of manual work, for example, hook the two edges 61 into the two grooves 56 on the back side in the depth direction, and then hook the remaining two edges 61 into the two grooves 46 on the front side in the depth direction. It is better to push in the part 61. After the inner yoke 27 is fitted into the spool 22, the permanent magnet 28 is attached to the inner yoke 27, and the outer yoke 26 is attached to the spool 22.
　《作用効果》
　次に、実施形態の主要な作用効果について説明する。
　有極直流電磁石装置２１は、スプール２２と、内ヨーク２７と、を備えている。スプール２２は、奥行方向に延びる円筒部３１にコイル３２が巻かれ、円筒部３１における奥行方向の両側にフランジ３３が形成されている。内ヨーク２７は、奥行方向と平行に延びる平板状に形成され、奥行方向における両側の縁部６１がフランジ３３に嵌め込まれている。フランジ３３には、嵌め込まれた内ヨーク２７を保持する爪部４１及び爪部５１が形成されている。したがって、内ヨーク２７が爪部４１及び爪部５１によって保持されるため、組立時における内ヨーク２７の脱落や位置ずれを抑制することができる。 《Effect》
Next, the main effects of the embodiment will be explained.
The polarized DC electromagnet device 21 includes a spool 22 and an inner yoke 27. In the spool 22, 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.
　有極直流電磁石装置２１は、プランジャ２３と、上部アーマチュア２４と、下部アーマチュア２５と、外ヨーク２６と、永久磁石２８と、を備えている。プランジャ２３は、円筒部３１に挿入されている。上部アーマチュア２４は、プランジャ２３における奥行方向の手前側に連結されている。下部アーマチュア２５は、プランジャ２３における奥行方向の奥側に連結されている。外ヨーク２６は、コ字状に形成され、一端側が奥行方向の手前側で上部アーマチュア２４とフランジ３３との間に配置され、他端側が奥行方向の奥側で下部アーマチュア２５を挟んでフランジ３３の反対側に配置され、中央が内ヨーク２７に対向している。永久磁石２８は、内ヨーク２７と外ヨーク２６との間に設けられている。コイル３２が非励磁のときには、下部アーマチュア２５を永久磁石２８によって内ヨーク２７に吸引する。コイル３２が励磁されたときには、上部アーマチュア２４を外ヨーク２６の一端側に吸引し、且つ下部アーマチュア２５を外ヨーク２６の他端側に吸引する。したがって、非励磁と励磁を切り替えることで、プランジャ２３を進退させて接点の開閉を行なうことができる。 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. When the coil 32 is de-energized, the lower armature 25 is attracted to the inner yoke 27 by the permanent magnet 28. When the coil 32 is excited, 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.
　永久磁石２８は、内ヨーク２７における奥行方向の奥側に配置されている。永久磁石２８を奥行方向の奥側に配置することで、内ヨーク２７の下端部６２における下部アーマチュア２５への吸引力を高めることができる。
　内ヨーク２７には、奥行方向の手前側に開口部６３が形成されている。これにより、有極直流電磁石装置２１の軽量化を図ることができる。 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.
　フランジ３３は、内側端面４２（又は５２）と、底面４３（又は５３）と、を備えている。内側端面４２（又は５２）は、奥行方向に直交する縦方向の外側を向いている。底面４３（又は５３）は、奥行方向の内側を向いている。爪部４１（又は５１）は、外側端面４４（又は５４）と、傾斜面４５（又は５５）と、を備えている。外側端面４４（又は５４）は、内ヨーク２７の厚さ分を開けて内側端面４２（又は５２）に対向している。傾斜面４５（又は５５）は、奥行方向の内側及び縦方向の外側を向いている。内ヨーク２７の縁部６１は、内側端面４２（又は５２）、底面４３（又は５３）、及び外側端面４４（又は５４）によって構成される凹溝４６（又は５６）に嵌め込まれている。これにより、内ヨーク２７の縁部６１が凹溝４６及び凹溝５６によって保持されるため、組立時における内ヨーク２７の脱落や位置ずれを抑制することができる。
　電磁接触器１１は、有極直流電磁石装置２１を備え、有極直流電磁石装置２１によって接点の開閉が行われる。したがって、組立時における内ヨーク２７の脱落や位置ずれを抑制した電磁接触器１１を提供することができる。 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.
　次に、比較例について説明する。
　図８は、比較例を示す図である。
　比較例は、爪部４１及び爪部５１を省略したことを除いては、前述した実施形態と同様であるため、共通部分については同一符号を付し、詳細な説明は省略する。内ヨーク２７は、その上端と下端をスプール２２のフランジ３３に嵌め合わせて支持されている。すなわち、上端が内側端面４２及び底面４３の入隅に支持され、下端が内側端面５２及び底面５３の入隅に支持されているだけである。そのため、組立時における振動や衝撃、また永久磁石２８や外ヨーク２６を近づけたときの吸引力によって、スプール２２に対して内ヨーク２７に脱落や位置ずれが生じる可能性があった。 Next, a comparative example will be explained.
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. Therefore, there is a possibility that 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.
　以上、限られた数の実施形態を参照しながら説明したが、権利範囲はそれらに限定されるものではなく、上記の開示に基づく実施形態の改変は、当業者にとって自明のことである。 Although the description has been made with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications to the embodiments based on the above disclosure will be obvious to those skilled in the art.
　１１…電磁接触器、１２…下部フレーム、１３…上部フレーム、２１…有極直流電磁石装置、２２…スプール、２３…プランジャ、２４…上部アーマチュア、２５…下部アーマチュア、２６…外ヨーク、２７…内ヨーク、２８…永久磁石、２９…復帰スプリング、３１…円筒部、３２…コイル、３３…フランジ、３６…側片部、３７…上片部、３８…下片部、４１…爪部、４２…内側端面、４３…底面、４４…外側端面、４５…傾斜面、４６…凹溝、５１…爪部、５２…内側端面、５３…底面、５４…外側端面、５５…傾斜面、５６…凹溝、６１…縁部、６２…下端部、６３…開口部、６４…凸部、６５…凹部 DESCRIPTION OF SYMBOLS 11...Magnetic contactor, 12...Lower frame, 13...Upper frame, 21...Polarized DC electromagnet device, 22...Spool, 23...Plunger, 24...Upper armature, 25...Lower armature, 26...Outer yoke, 27...Inner Yoke, 28... Permanent magnet, 29... Return spring, 31... Cylindrical part, 32... Coil, 33... Flange, 36... Side piece part, 37... Upper piece part, 38... Lower piece part, 41... Claw part, 42... Inner end surface, 43... Bottom surface, 44... Outer end surface, 45... Inclined surface, 46... Concave groove, 51... Claw portion, 52... Inner end surface, 53... Bottom surface, 54... Outer end surface, 55... Inclined surface, 56... Concave groove , 61...Edge, 62...Lower end, 63...Opening, 64...Convex, 65...Concave

Claims (6)

  1. 　奥行方向に延びる円筒部にコイルが巻かれ、前記円筒部における奥行方向の両側にフランジが形成されたスプールと、
    　奥行方向と平行に延びる平板状に形成され、奥行方向における両側の縁部が前記フランジに嵌め込まれる内ヨークと、を備え、
    　前記フランジには、嵌め込まれた前記内ヨークを保持する爪部が形成されていることを特徴とする有極直流電磁石装置。     a spool in which a coil is 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;
    an inner yoke formed in a flat plate shape extending parallel to the depth direction, and having edges on both sides in the depth direction fitted into the flanges;
    A polarized DC electromagnet device, wherein the flange is formed with a claw portion that holds the fitted inner yoke.
  2. 　前記円筒部に挿入されたプランジャと、
    　前記プランジャにおける奥行方向の手前側に連結された第一のアーマチュアと、
    　前記プランジャにおける奥行方向の奥側に連結された第二のアーマチュアと、
    　コ字状に形成され、一端側が奥行方向の手前側で前記第一のアーマチュアと前記フランジとの間に配置され、他端側が奥行方向の奥側で前記第二のアーマチュアを挟んで前記フランジの反対側に配置され、中央が前記内ヨークに対向している外ヨークと、
    　前記内ヨークと前記外ヨークとの間に設けられた永久磁石と、を備え、
    　前記コイルが非励磁のときには、前記第二のアーマチュアを前記永久磁石によって前記内ヨークに吸引し、
    　前記コイルが励磁されたときには、前記第一のアーマチュアを前記外ヨークの一端側に吸引し、且つ前記第二のアーマチュアを前記外ヨークの他端側に吸引することを特徴とする請求項１に記載の有極直流電磁石装置。     a plunger inserted into the cylindrical portion;
    a first armature connected to the front side of the plunger in the depth direction;
    a second armature connected to the back side of the plunger in the depth direction;
    It is formed in a U-shape, and one end is disposed on the front side in the depth direction between the first armature and the flange, and the other end is disposed on the back side in the depth direction between the second armature and the flange. an outer yoke arranged on the opposite side and whose center faces the inner yoke;
    a permanent magnet provided between the inner yoke and the outer yoke;
    when the coil is de-energized, the second armature is attracted to the inner yoke by the permanent magnet;
    2. The coil according to claim 1, wherein when the coil is excited, the first armature is attracted to one end of the outer yoke, and the second armature is attracted to the other end of the outer yoke. The described polarized DC electromagnet device.
  3. 　前記永久磁石は、前記内ヨークにおける奥行方向の奥側に配置されていることを特徴とする請求項２に記載の有極直流電磁石装置。 3. The polarized DC electromagnet device according to claim 2, wherein the permanent magnet is arranged on the back side of the inner yoke in the depth direction.
  4. 　前記内ヨークには、奥行方向の手前側に開口部が形成されていることを特徴とする請求項２に記載の有極直流電磁石装置。 3. The polarized DC electromagnet device according to claim 2, wherein the inner yoke has an opening formed on the front side in the depth direction.
  5. 　前記フランジは、
    　奥行方向に直交する縦方向の外側を向いた内側端面と、
    　奥行方向の内側を向いた底面と、を備え、
    　前記爪部は、
    　前記内ヨークの厚さ分を開けて前記内側端面に対向する外側端面と、
    　奥行方向の内側及び縦方向の外側を向いた傾斜面と、を備え、
    　前記内ヨークの前記縁部は、前記内側端面、前記底面、及び前記外側端面によって構成される凹溝に嵌め込まれていることを特徴とする請求項１に記載の有極直流電磁石装置。     The flange is
    an inner end face facing outward in the vertical direction perpendicular to the depth direction;
    A bottom surface facing inward in the depth direction,
    The claw portion is
    an outer end face facing the inner end face with an opening equal to the thickness of the inner yoke;
    an inclined surface facing inward in the depth direction and outward in the longitudinal direction;
    2. The polarized DC electromagnet device according to claim 1, wherein the edge of the inner yoke is fitted into a groove formed by the inner end surface, the bottom surface, and the outer end surface.
  6. 　請求項１に記載の有極直流電磁石装置を備え、
    　前記有極直流電磁石装置によって接点の開閉が行われる電磁接触器。     comprising the polarized DC electromagnet device according to claim 1,
    An electromagnetic contactor in which contacts are opened and closed by the polarized DC electromagnet device.
PCT/JP2023/008357 2022-07-08 2023-03-06 Polarized dc electromagnet device and electromagnetic contactor WO2024009559A1 (en)

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JP2011028900A (en) * 2009-07-22 2011-02-10 Panasonic Electric Works Co Ltd Electromagnetic relay device
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JP2018049859A (en) * 2016-09-20 2018-03-29 日立オートモティブシステムズ株式会社 Coil assembly and brake control device

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