WO2022113182A1 - 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器 - Google Patents

電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器 Download PDF

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Publication number
WO2022113182A1
WO2022113182A1 PCT/JP2020/043730 JP2020043730W WO2022113182A1 WO 2022113182 A1 WO2022113182 A1 WO 2022113182A1 JP 2020043730 W JP2020043730 W JP 2020043730W WO 2022113182 A1 WO2022113182 A1 WO 2022113182A1
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WO
WIPO (PCT)
Prior art keywords
movable
iron core
core
shaft
movable iron
Prior art date
Application number
PCT/JP2020/043730
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
将大 遠矢
翔 田中
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to EP20963447.6A priority Critical patent/EP4254459A4/en
Priority to JP2022564863A priority patent/JP7366292B2/ja
Priority to PCT/JP2020/043730 priority patent/WO2022113182A1/ja
Publication of WO2022113182A1 publication Critical patent/WO2022113182A1/ja

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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
    • H01F7/1607—Armatures entering the winding
    • 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
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element

Definitions

  • This application relates to an electromagnetic actuator and a circuit breaker equipped with an electromagnetic actuator.
  • the magnetic circuit is demagnetized, the movable iron core in the electromagnetic actuator is driven in the direction of the anti-fixed core, and the shaft connected to the movable iron core is anti-armed with the movable iron core.
  • the opening operation of the contact of the circuit breaker is operated.
  • the mechanical parts may be damaged by the impact force during the opening / closing operation, and it is required to reduce the impact force during the opening / closing operation.
  • a rubber material for shock absorption, a damper part, or the like is used to alleviate the impact force. Therefore, for example, in the electromagnetic actuator of the circuit breaker disclosed in Patent Document 1, the impact force during the opening / closing operation is alleviated by providing a rubber material that alleviates the impact force.
  • the present application has been made to solve the above-mentioned problems, and the purpose thereof is to provide an electromagnetic actuator capable of alleviating an impact force during an opening / closing operation with a simple configuration.
  • the electromagnetic actuator disclosed in the present application has a first yoke in which an electromagnetic coil is arranged on the inner peripheral side, a fixed side lid plate arranged on one side of the first yoke, and an arrangement on the other side of the first yoke.
  • a movable iron core arranged on the outer periphery facing the fixed iron core and having a movable iron core projecting portion protruding from the peripheral surface of the shaft on one side facing the movable side lid plate, and a movable iron core on the outer periphery of the movable iron core.
  • a second yoke arranged, a pressure spring arranged between the movable core protruding portion of the movable iron core and the first protruding portion of the shaft, and the movable iron core arranged in the second yoke. It is provided with a movable iron core bearing that slides in the axial direction, and an air vent prevention plate arranged between the movable iron core protruding portion of the movable iron core and the pressure contact spring.
  • a movable iron core bearing that slides the movable iron core in the axial direction is arranged on the second yoke to prevent air from coming out between the movable iron core protrusion of the movable iron core and the pressure contact spring.
  • FIG. 1 It is a front view which shows the open pole state of the circuit breaker which mounted the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. It is a front view which shows the closed pole state of the circuit breaker which mounted the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the demagnetization state of the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the excitation operation completion state of the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. 1 It is a front view which shows the open pole state of the circuit breaker which mounted the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. It is a front view which shows the closed pole state of the circuit breaker which mounted the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. It is sectional drawing which shows the demagnetization state of the electromagnetic actuator which concerns on Embodiment 1.
  • FIG. 1 is a front view showing an open pole state of a circuit breaker equipped with an electromagnetic actuator according to the first embodiment.
  • FIG. 2 is a front view showing a closed pole state of the circuit breaker on which the electromagnetic actuator according to the first embodiment is mounted.
  • FIG. 3 is a cross-sectional view showing a demagnetized state of the electromagnetic actuator according to the first embodiment.
  • FIG. 4 is a cross-sectional view showing a completed state of the excitation operation of the electromagnetic actuator according to the first embodiment.
  • the circuit breaker 110 is a circuit breaker that holds the closed pole state of the main contact or opens the main contact by excitation of the electromagnetic coil of the electromagnetic actuator 100.
  • the circuit breaker 110 is provided with a pair of main contacts, a movable side main contact 104 and a fixed side main contact 105, and a shaft 6 for operating the opening / closing operation of the main contacts. It has an actuator 100 and an arc extinguishing chamber 108.
  • a movable conductor 103, a flexible conductor 106, a lower conductor 101, and an open pole spring 107 are provided on the movable side main contact 104 side.
  • An upper conductor 102 is provided on the fixed side main contact 105 side.
  • the arc extinguishing chamber 108 extinguishes the arc discharge generated when the movable side main contact 104 separates from the fixed side main contact 105 during the opening operation.
  • the fixed side main contact 105 which is one of the pair of main contacts, is joined to one end of the upper conductor 102.
  • the movable side main contact 104 which is the other of the pair of main contacts, is joined to one end of the movable conductor 103 at a position facing the fixed side main contact 105.
  • the other end of the movable conductor 103 is connected to the lower conductor 101 by a flexible conductor 106.
  • the movable conductor 103 is urged by the shaft 6 of the electromagnetic actuator 100 so as to open and close the movable side main contact 104 and the fixed side main contact 105.
  • the movable side main contact 104 and the fixed side main contact 105 are energized via the lower conductor 101 and the upper conductor 102, respectively.
  • the movable side main contact 104 is brought into contact with the fixed side main contact 105 by driving the movable conductor 103 toward the upper conductor 102. Further, the movable side main contact 104 is driven in a direction in which the movable conductor 103 is separated from the upper conductor 102, so that the contact with the fixed side main contact 105 is eliminated.
  • the state in which the movable side main contact 104 and the fixed side main contact 105 are in contact with each other is the closed pole state of the main contact shown in FIG. 2, and the state in which the movable side main contact 104 and the fixed side main contact 105 are separated from each other. Is the open pole state of the main contact shown in FIG.
  • FIG. 3 corresponds to the open pole state of the circuit breaker 110 shown in FIG. 1 and shows the position of the movable iron core 9 in the demagnetized state of the electromagnetic actuator 100.
  • FIG. 4 shows a position where the electromagnetic actuator 100 is excited and the movable iron core 9 abuts on the fixed core 5 in accordance with the closed pole state of the circuit breaker 110 shown in FIG.
  • the electromagnetic actuator 100 is configured as follows.
  • the electromagnetic coil 2 is arranged on the inner peripheral side of the first yoke 1
  • the fixed side lid plate 3 is arranged on one side of the first yoke 1
  • the movable side lid plate 4 is arranged on the other side of the first yoke 1.
  • a fixed iron core 5 is arranged at the center of the fixed side lid plate 3, and a shaft 6 is inserted into the fixed side lid plate 3, the fixed iron core 5, and the movable side lid plate 4.
  • the shaft 6 has a second protruding portion 6b which is connected to the first protruding portion 6a and the first protruding portion 6a and has an outer diameter smaller than the outer diameter of the first protruding portion 6a.
  • the fixed core 5 is provided with a first recess 5a of the fixed core 5 in which the second protrusion 6b of the shaft 6 is accommodated, and the second recess of the fixed core 5 having an inner diameter smaller than the inner diameter of the first recess 5a of the fixed core 5. 5b is provided.
  • the fixed side lid plate 3 side of the shaft 6 is supported by the first bearing 7, and the movable side lid plate 4 side of the shaft 6 is supported by the second bearing 8.
  • the movable iron core 9 is arranged on the outer periphery of the shaft 6 so as to face the fixed iron core 5, and a movable iron core projecting portion 9a projecting from the peripheral surface of the shaft 6 is provided on one side facing the movable side lid plate 4 to provide the movable iron core 9.
  • a second yoke 10 is arranged on the outer periphery of the 9, a pressure spring 11 is arranged between the movable core protruding portion 9a of the movable core 9 and the first protruding portion 6a of the shaft 6, and the second recess 5b of the fixed core 5 is arranged.
  • a return spring 12 is arranged between the shaft 6 and the second protrusion 6b of the shaft 6.
  • Movable core bearings 13 and 14 are arranged on the inner peripheral side of the second yoke 10, and the movable core 9 is slid so as to be reciprocating in the axial direction.
  • an air escape prevention plate 15 is arranged between the movable iron core protruding portion 9a of the movable iron core 9 and the pressure contact spring 11, and suppresses the outflow of air to the outside.
  • the operation of the electromagnetic actuator 100 will be described. First, when the electromagnetic coil 2 is energized and a current flows, a magnetic circuit including a movable iron core 9, a fixed iron core 5, a first yoke 1, a fixed side lid plate 3, a movable side lid plate 4, and a second yoke 10 is excited.
  • the movable core 9 is supported by the movable core bearing 13 and slides and moves toward the fixed core 5.
  • the shaft 6 connected via the pressure contact spring 11 also moves in the same direction, and the return spring 12 arranged between the second recess 5b of the fixed iron core 5 and the second protrusion 6b of the shaft 6 is compressed. Will be done.
  • the movable conductor 103 connected to the shaft 6 is driven toward the upper conductor 102.
  • the magnetic circuit is demagnetized and the magnetic attraction force disappears, and the movable iron core 9 is a pressure spring in the direction opposite to the direction in which the fixed core 5 is arranged. It moves by the release force of 11.
  • the contact pressure between the contacts is released, and the contacts are in an open state.
  • the release force of the release spring 107 and the return spring 12 both move the shaft 6 and the movable iron core 9, and the movable conductor 103 is driven in the direction of separating the movable side main contact 104 and the fixed side main contact 105, and the main contact is separated. ..
  • the circuit breaker 110 is in the open pole state shown in FIG.
  • the movable iron core 9 starts moving to the fixed core 5 side, and the electromagnetic actuator shown in FIG. 4
  • the movable core 9 starts moving in the opposite direction in which the fixed core 5 is arranged, that is, toward the movable side lid plate 4.
  • the movable iron core bearings 13 and 14 are provided on the second yoke 10 on the outer peripheral side of the movable iron core 9, and the air escape prevention plate 15 is provided in the movable iron core 9, so that the air in the movable iron core operating space 16 is provided. Can be suppressed from flowing out to the outside. Therefore, the movable iron core 9 operates while compressing the trapped air, and the resistance force during operation can be increased, so that the operating speed can be reduced.
  • the electromagnetic actuator 100 bears the air damper effect during the opening / closing operation, and the impact force during the opening / closing operation can be mitigated.
  • the movable iron core 9 operates while compressing the trapped air, and the resistance during operation can be increased, so that the operating speed can be reduced. Since the electromagnetic actuator 100 disclosed in the present application is driven in connection with the movable side main contact 104 of the circuit breaker 110, the electromagnetic actuator 100 bears the air damper effect during the opening / closing operation and alleviates the impact force.
  • FIG. 5 is a cross-sectional view showing a demagnetized state of the electromagnetic actuator according to the second embodiment.
  • an air vent hole 17 is provided in the movable side lid plate 4 facing the movable iron core protruding portion 9a of the movable iron core 9.
  • the movable core 9 moves to the fixed core 5 side during the closed pole operation, and moves to the opposite direction in which the fixed core 5 is arranged, that is, to the movable side lid plate 4 side during the open pole operation, as shown in FIG. Since the movable side lid plate 4 is provided with an air vent hole 17, the amount of air flowing out of the movable iron core operating space 16 can be adjusted by adjusting the hole diameter and the number of holes of the air vent hole 17. .. Therefore, since the resistance force during operation can be adjusted, the speed at the time of opening / closing operation can be adjusted.
  • This application is suitable for realizing an electromagnetic actuator that can reduce the impact force during opening / closing operation with a simple configuration.

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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)
PCT/JP2020/043730 2020-11-25 2020-11-25 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器 WO2022113182A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20963447.6A EP4254459A4 (en) 2020-11-25 2020-11-25 ELECTROMAGNETIC ACTUATOR AND CIRCUIT BREAKER EQUIPPED WITH AN ELECTROMAGNETIC ACTUATOR
JP2022564863A JP7366292B2 (ja) 2020-11-25 2020-11-25 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器
PCT/JP2020/043730 WO2022113182A1 (ja) 2020-11-25 2020-11-25 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/043730 WO2022113182A1 (ja) 2020-11-25 2020-11-25 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器

Publications (1)

Publication Number Publication Date
WO2022113182A1 true WO2022113182A1 (ja) 2022-06-02

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ID=81754113

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Application Number Title Priority Date Filing Date
PCT/JP2020/043730 WO2022113182A1 (ja) 2020-11-25 2020-11-25 電磁アクチュエータおよび電磁アクチュエータを搭載した回路遮断器

Country Status (3)

Country Link
EP (1) EP4254459A4 (enrdf_load_stackoverflow)
JP (1) JP7366292B2 (enrdf_load_stackoverflow)
WO (1) WO2022113182A1 (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01173911U (enrdf_load_stackoverflow) * 1988-05-26 1989-12-11
JP2003318020A (ja) 2002-04-25 2003-11-07 T D S Kk ソレノイド
DE202016103773U1 (de) * 2015-08-27 2016-07-27 Bitron Industrie España, S.A. Mit einem schalldämpfenden System und einem magnetischen Kompensator ausgestatteter bistabiler Elektromagnet
JP6768174B1 (ja) * 2019-11-14 2020-10-14 三菱電機株式会社 電磁アクチュエータ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146911A (en) * 1980-04-04 1980-11-15 Tokai Rika Co Ltd Time-limit solenoid
JPS59164217U (ja) * 1983-04-19 1984-11-02 アルプス電気株式会社 ソレノイド
JPS59228701A (ja) * 1983-06-10 1984-12-22 Tokyo Electric Co Ltd 電磁石
JPS6011416U (ja) * 1983-06-30 1985-01-25 松下電工株式会社 消音ソレノイド
US5663700A (en) * 1995-08-25 1997-09-02 Trombetta Corporation Sound dampening solenoid
JP2001143927A (ja) * 1999-11-16 2001-05-25 Aichi Electric Co Ltd ソレノイドの騒音低減装置
DE102013225392A1 (de) * 2013-12-10 2015-06-11 Robert Bosch Gmbh Elektromagnet eines elektromagnetisch betätigten Fluidventils
DE102015213840B4 (de) * 2015-07-22 2025-04-03 Robert Bosch Gmbh Stromlos geschlossenes Magnetventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01173911U (enrdf_load_stackoverflow) * 1988-05-26 1989-12-11
JP2003318020A (ja) 2002-04-25 2003-11-07 T D S Kk ソレノイド
DE202016103773U1 (de) * 2015-08-27 2016-07-27 Bitron Industrie España, S.A. Mit einem schalldämpfenden System und einem magnetischen Kompensator ausgestatteter bistabiler Elektromagnet
JP6768174B1 (ja) * 2019-11-14 2020-10-14 三菱電機株式会社 電磁アクチュエータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4254459A4

Also Published As

Publication number Publication date
EP4254459A4 (en) 2023-12-20
EP4254459A1 (en) 2023-10-04
JPWO2022113182A1 (enrdf_load_stackoverflow) 2022-06-02
JP7366292B2 (ja) 2023-10-20

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