WO2014007180A1 - 電磁継電器 - Google Patents
電磁継電器 Download PDFInfo
- Publication number
- WO2014007180A1 WO2014007180A1 PCT/JP2013/067909 JP2013067909W WO2014007180A1 WO 2014007180 A1 WO2014007180 A1 WO 2014007180A1 JP 2013067909 W JP2013067909 W JP 2013067909W WO 2014007180 A1 WO2014007180 A1 WO 2014007180A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arc
- contact
- electromagnetic relay
- pair
- magnetic pole
- Prior art date
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Classifications
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- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H33/182—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/546—Contact arrangements for contactors having bridging contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/36—Metal parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
Definitions
- the present invention relates to an electromagnetic relay.
- Patent Documents 1 to 4 disclose an electromagnetic relay or an arc extinguishing method provided with a device for extinguishing an arc generated when a contact is opened.
- Patent Document 1 when a movable contact and a fixed contact are separated, a permanent magnet against an arc generated in a space formed when the movable contact is separated from the fixed contact (hereinafter referred to as a contact gap), A method is disclosed in which a magnetic force is applied in a direction perpendicular to the arc, and the arc is stretched from a contact part to a non-contact part, thereby lengthening the arc length and smoothly cutting the arc.
- the method of Patent Document 1 since the arc is moved from the contact part to the non-contact part only by the magnetic force of the permanent magnet, the permanent magnet necessary for extinguishing the arc becomes large, and accordingly, the electromagnetic relay itself is enlarged. .
- Patent Document 2 has a ceramic plate chamber in which the inner wall surface of the housing facing the contact gap and perpendicular to the magnetic pole surface of the permanent magnet is recessed in the axial direction.
- a plunger-type potential relay in which an arc-resistant plate made of ceramic is embedded is disclosed.
- the arc-resistant plate is installed at the point where the arc has moved, sufficient stretching of the arc length is hindered. And in order to ensure sufficient extension of the arc length, if the arc-resistant plate is disposed further away from the contact gap, the contact portion becomes larger.
- Patent Document 3 discloses a sealed contact device in which an arc extinguishing grid is disposed in the vicinity of a movable contact and a fixed contact.
- the arc extinguishing grid of the sealed contact device of Patent Document 3 is “a metal plate having a thickness of about 0.2 to 0.3 mm and a few mm to a dozen or so, and a few mm between each metal plate.
- each metal plate is supported by support plates 38 and 40 (39, 41) made of ceramic or the like and arranged as shown in FIG. Further, since a support plate for further stacking metal plates with a gap is required, the contact portion is enlarged.
- Patent Document 4 discloses a sealed contact device that encloses an electrically insulating gas such as hydrogen gas and opens and closes a contact in an airtight sealed container. The generated arc is quickly extinguished by the cooling ability of the electrically insulating gas and the arc blowing action of the permanent magnet arranged outside the sealed container.
- the method of the cited document 4 requires equipment for enclosing an electrically insulating gas such as hydrogen gas, and in order not to allow the electrically insulating gas to permeate, it is necessary to seal the container with metal or ceramic, so that the cost is low. Take it.
- the fixed contact, the movable contact moving with respect to the fixed contact, and the opposite magnetic pole surfaces are spaced apart from and opposed to each other on the side of the fixed contact and the movable contact.
- a pair of magnets that draws an arc generated between the fixed contact and the movable contact in a space between the magnetic pole surfaces, and a first surface that is disposed in the space and faces each other through a gap
- a pair of arc cooling plates each having a second surface opposite to the first surface and facing the magnetic pole surface of any one of the magnets, and in the space
- An electromagnetic relay is provided that is configured such that the drawn arc is drawn into the gap and contacts the first surface of at least one of the arc cooling plates.
- the invention according to claim 2 provides the electromagnetic relay according to claim 1, wherein the pair of arc cooling plates are made of ceramic.
- a third aspect of the present invention provides the electromagnetic relay according to the first or second aspect, wherein a yoke is installed on a surface of each of the pair of magnets opposite to the magnetic pole surface. To do.
- the pair of arc cooling is performed so that the gap becomes narrower as the distance from the fixed contact and the movable contact increases.
- An electromagnetic relay is provided on which a plate is disposed.
- the arc drawn into the space between the magnetic pole faces contacts the first surface of at least one of the arc cooling plates. Therefore, the arc generated between the fixed contact and the movable contact is cooled and extinguished by contacting the arc cooling plate. Moreover, since the high-temperature arc is extinguished in contact with the arc cooling plate in the stretched state, the load on the arc cooling plate is reduced, and the arc cooling plate can be prevented from being damaged by the arc.
- FIG. 2 is a cross-sectional view of the electromagnetic relay along the line II-II in FIG. 1.
- FIG. 3 is a cross-sectional view of the electromagnetic relay taken along line III-III in FIG. 1. It is a perspective view which expands and shows a part of electromagnetic relay. It is sectional drawing which shows another example of the arc-extinguishing part of an electromagnetic relay.
- FIG. 1 is a cross-sectional view showing a configuration of an electromagnetic relay 10 according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1
- FIG. 3 is a cross-sectional view taken along line III-III in FIG. It is sectional drawing along a line.
- the electromagnetic relay 10 of the present embodiment moves relative to the base 11, the electromagnet block 12, the two fixed contacts 16a and 16b (hereinafter sometimes referred to collectively as the fixed contact 16), and the fixed contacts 16a and 16b.
- the contact portions 13a and 13b (hereinafter collectively referred to as the contact portion 13) including the movable contacts 15a and 15b (hereinafter collectively referred to as the movable contact 15) that come into contact with the fixed contacts 16a and 16b, respectively. And an arc extinguishing part 30a, 30b for extinguishing an arc generated in the contact part 13a, 13b, and a cover 17 for accommodating the electromagnet block 12, the contact part 13 and the arc extinguishing part 30a, 30b.
- the electromagnet block 12 includes a yoke 22 disposed on the base 11, an electromagnet 20, a hinge spring 23, an armature 24 provided at the tip of the hinge spring 23, and an insulator 26 disposed on the armature 24.
- the electromagnet 20 includes a bobbin 21, a coil 19 wound around the outer periphery of the bobbin 21, and an iron core 18 disposed on the inner periphery of the bobbin 21. Further, below the base 11, coil terminals 28 a and 28 b extending from the coil 19 are provided.
- the illustrated configuration of the electromagnet block 12 is an example, and the electromagnet block may have other configurations.
- the contact portion 13 includes the two movable contacts 15 a and 15 b and the fixed contacts 16 a and 16 b as described above, and the movable contacts 15 a and 15 b are fixed to the movable spring 25 that is interlocked with the armature 24.
- fixed terminals 29a and 29b are provided below the base 11 to be connected to one of the fixed contacts 16a and 16b, respectively (see FIG. 2).
- FIG. 4 is a perspective view showing the arc extinguishing portions 30a and 30b by enlarging the portion C surrounded by the dotted line in FIG. 2, but some components are omitted to show the structure of the arc extinguishing portions 30a and 30b. is doing.
- the electromagnetic relay 10 of this embodiment is provided with two arc extinguishing portions 30a and 30b in order to extinguish the arcs 40a and 40b generated at the two contact gaps 27a and 27b.
- the arc-extinguishing part 30a and the arc-extinguishing part 30b are substantially the same except for the direction in which the arc 40 is stretched by the magnetic field.
- the arc extinguishing portion 30a includes a pair of plate-like permanent magnets 31a and 32a as shown in the figure.
- the permanent magnets 31a and 32a are arranged so that the polarities of the magnetic pole surfaces 311a and 321a facing each other across the contact gap 27a are opposite to each other on the side of the movable contact 15a and the fixed contact 16a, that is, The N pole surface and the S pole surface of the other permanent magnet were arranged so as to be spaced apart from each other and opposed to each other.
- a magnetic field is formed in the space 36a by the opposing magnetic pole faces of the pair of permanent magnets 31a and 32a facing each other with a constant interval W1. Since a magnetic field is generated in the space 36a, a Lorentz force acts on the arc 40a generated when a current flows from the fixed contact 16a to the movable contact 15a, and the arc 40a is stretched in the direction of arrow A. 40a is drawn into the space 36a.
- the arc extinguishing unit 30a includes a pair of arc cooling plates 33a and 34a.
- the pair of arc cooling plates 33a and 34a have first surfaces 331a and 341a that face each other with a gap 37a therebetween, and second surfaces 332a and 342a opposite to the first surfaces 331a and 341a.
- the second surface 332a of the arc cooling plate 33a faces the magnetic pole surface 311a of the permanent magnet 31a
- the second surface 342a of the arc cooling plate 34a faces the magnetic pole surface 321a of the permanent magnet 32a.
- the pair of arc cooling plates 33a and 34a is generated in the contact gap 27a in the space 36a between the permanent magnets 31a and 32a and the magnetic force of the pair of permanent magnets 31a and 32a.
- the arc 40a drawn by the permanent magnets 31a and 32a and drawn into the space 36a is configured to be drawn into the gap 37a between the pair of arc cooling plates 33a and 34a.
- the pair of arc cooling plates 33a and 34a are arranged so as to be substantially parallel to the permanent magnets 31a and 32a. Since the arc cooling plates 33a and 34a are arranged through the gap 37a so as to sandwich the arc 40a to be stretched, the stretching of the arc 40a is not easily inhibited.
- the arc 40a drawn into the gap 37a is cooled and extinguished by contacting at least one of the mutually opposing first surfaces 331a and 341a of the arc cooling plates 33a and 34a.
- the arc cooling plates 33a and 34a may be damaged by the heat of the arc 40a.
- the arc 40a is stretched to some extent in the space 36a and cooled, and then contacts the arc cooling plates 33a and 34a in the gap 37a, thereby preventing the arc cooling plates 33a and 34a from being damaged. be able to.
- the arc cooling plates 33a and 34a in the illustrated embodiment are made of ceramic and have a small effect on the magnetic field in the space 36a. The arc 40a is stretched by the magnetic field even after being drawn into the gap 37a between the arc cooling plates 33a and 34a. .
- yokes 35a and 35b are installed on the surfaces 312a and 322a opposite to the magnetic pole surfaces 311a and 321a of the permanent magnets 31a and 32a, as shown in FIGS.
- a uniform magnetic field can be obtained in the space 36a.
- the position of the contact gap 27a is deviated from the central portion of the space 36a.
- the yokes 35a and 35b the position of the contact gap 27a is uniform as well as the central portion of the space 36a. A magnetic field can be obtained, the strength of the magnetic force applied to the arc 40a generated in the contact gap 27a is increased, and the arc 40a can be stretched more stably.
- the pair of permanent magnets 31a and 32a only need to be disposed in the vicinity of the contact gap 27a. If the arc 40a can be drawn into the space 36a, the permanent magnets 31a and 32a are not necessarily disposed so as to sandwich the contact gap 27a. It's okay. However, it is desirable to arrange the pair of permanent magnets 31a and 32a so as to sandwich the contact gap 27a because the magnetic field becomes stronger and the arc 40a can be stably drawn into the space 36a.
- the permanent magnets 31a and 32a are examples of magnets, and for example, an electromagnet may be used to generate a magnetic field.
- the other arc-extinguishing part 30b is arranged so that the polarities of the magnetic pole surfaces 311b and 321b are opposite to each other with the contact gap 27b sandwiched between the movable contact 15b and the fixed contact 16b.
- a pair of plate-like permanent magnets 31b and 32b are provided so as to be spaced apart from each other (so that the N-pole surface and the S-pole surface face each other).
- a space 36b in which a magnetic field is generated is formed by the opposing magnetic pole faces 311b and 321b of the pair of permanent magnets 31b and 32b facing each other with a constant interval W1. Since a magnetic field is generated in the space 36b, a Lorentz force acts on the arc 40b generated in the contact gap 27b and flowing from the movable contact 15b to the fixed contact 16b, and the arc 40b is stretched in the direction of the arrow B. 40b is drawn into the space 36b.
- the arc extinguishing unit 30b includes a pair of arc cooling plates 33b and 34b, and the pair of arc cooling plates 33b and 34b are opposed to each other via a gap 37b, the first surfaces 331b and 341b, and the first surface 331b, It has second surfaces 332b and 342b opposite to 341b.
- the second surface 332b of the arc cooling plate 33b faces the magnetic pole surface 311b of the permanent magnet 31b
- the second surface 342b of the arc cooling plate 34b faces the magnetic pole surface 321b of the permanent magnet 32b.
- the pair of arc cooling plates 33b and 34b are generated in the contact gap 27b in the space 36b between the permanent magnets 31b and 32b and are stretched by the magnetic force of the pair of permanent magnets 31b and 32b.
- the arcs 40b are disposed opposite each other with a predetermined interval W2 therebetween.
- the pair of arc cooling plates 33b and 34b are arranged so as to be substantially parallel to the permanent magnets 31b and 32b.
- the arc 40b drawn by the magnetic field of the permanent magnets 31b and 32b, drawn into the space 36b, and drawn into the first surface 331b of the arc cooling plate 33b and the gap 37b between the arc cooling plates 34b is the first of the arc cooling plate 33b.
- yokes 35a and 35b are arranged on the surfaces 312b and 322b on the opposite sides of the space 36b of the permanent magnets 31b and 32b.
- a uniform magnetic field can be obtained in the space 36b.
- a uniform magnetic field is obtained in the contact gap 27b as well as the central portion of the space 36b, and the strength of the magnetic force applied to the arc 40b generated in the contact gap 27b is increased.
- the arc 40b can be stretched more stably.
- the arc-extinguishing part 30a and the arc-extinguishing part 30b share the yokes 35a and 35b, but each may have a separate yoke.
- the electromagnetic relay 10 of the illustrated embodiment is configured to extinguish the arcs 40a and 40b generated in the two contact gaps 27a and 27b, but the arc is extinguished in one of the contact gaps. It is good also as a structure which provides the arc-extinguishing part to perform.
- the material of the arc cooling plate is preferably made of ceramic in consideration of insulation and heat resistance.
- the material for cooling the arc is not limited to this, and may be formed of another material, for example, a heat-resistant plastic, when the heat resistance when the arc contacts is sufficiently secured.
- the pair of arc cooling plates 33a and 34a and the arc cooling plates 33b and 34b are arranged in parallel to each other with a predetermined interval W2.
- the arrangement method of the arc cooling plates 33a, 34a, 33b, and 34b is not limited to this.
- the arc cooling plate 33a and the arc positioned farthest from the contact gap 27a rather than the distance W3 between the arc cooling plate 33a and the arc cooling plate 34a in the vicinity of the contact gap 27a so as to become narrower as the distance increases.
- An arc cooling plate may be arranged so that the distance W4 from the cooling plate 34a is smaller.
- the air around the contact gaps 27a and 27b is warmed by the heat generated when the arcs 40a and 40b are generated, and a temperature difference can be made with respect to the air outside the spaces 38a and 36b.
- a pressure difference is generated between the spaces 36a and 36b and the spaces 38a and 38b, and the air in the spaces 36a and 36b flows in the direction of arrow D or arrow E in FIG.
- the air flow becomes faster, and the arcs 40a and 40b can be further stretched and extinguished. it can.
- the venturi effect (fluid such as air, liquid, etc. from a wide space to a thin tube due to a pressure difference)
- the surrounding fluid is drawn into the thin tube and the fluid is ejected out of the thin tube), thereby increasing the flow velocity of the surrounding air and further extending the arcs 40a and 40b.
- the electromagnetic relay according to the present embodiment has been described above with reference to the drawings.
- a certain amount of space is required to naturally extinguish the arc.
- the magnetic pole can be further increased.
- the space between the surfaces can be reduced. That is, the arc extinguishing unit provided in the electromagnetic relay according to the present embodiment has the arc cooling plates arranged so as to sandwich the stretched arc, so that the arc can be extinguished without inhibiting the arc stretching. it can.
- the electromagnetic relay according to the present embodiment does not use an inert gas such as hydrogen gas having an arc cooling effect, it is not necessary to seal the periphery of the contact portion of the electromagnetic relay. That is, a configuration for sealing the gas is unnecessary, and it becomes possible to manufacture an electromagnetic relay with improved arc interruption performance at low cost.
- Electromagnetic relay 12 Electromagnet block 13a, 13b Contact part 15a, 15b Movable contact 16a, 16b Fixed contact 30a, 30b Arc extinguishing part 31a, 32a, 31b, 32b Permanent magnet 33a, 34a, 33b, 34b Arc cooling plate 35a, 35b Yoke
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- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Contacts (AREA)
Abstract
Description
12 電磁石ブロック
13a、13b 接点部
15a、15b 可動接点
16a、16b 固定接点
30a、30b 消弧部
31a、32a、31b、32b 永久磁石
33a、34a、33b、34b アーク冷却板
35a、35b ヨーク
Claims (4)
- 固定接点と、
前記固定接点に対して移動する可動接点と、
前記固定接点及び前記可動接点の側方で、互いに逆極性の磁極面が互いに離間かつ対向するように配置される一対の磁石と、
前記磁極面の間の空間に配置され、隙間を介して互いに対向する第一面、及びいずれか一方の前記磁石の前記磁極面に対面する第二面をそれぞれに有する一対のアーク冷却板とを具備する、
電磁継電器。 - 前記アーク冷却板はセラミック製である、請求項1に記載の電磁継電器。
- 前記一対の磁石の各々の向かい合う磁極面とは反対側の面に、ヨークが設置される、請求項1又は2に記載の電磁継電器。
- 前記隙間が、前記固定接点及び前記可動接点から離れるにつれて狭くなるように、前記一対のアーク冷却板が配置される、請求項1から3の何れか一項に記載の電磁継電器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US14/232,798 US9653236B2 (en) | 2012-07-04 | 2013-06-28 | Electromagnetic relay |
EP13813654.4A EP2871660B1 (en) | 2012-07-04 | 2013-06-28 | Electromagnetic relay |
KR1020147002768A KR101606514B1 (ko) | 2012-07-04 | 2013-06-28 | 전자계전기 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012150644A JP6066598B2 (ja) | 2012-07-04 | 2012-07-04 | 電磁継電器 |
JP2012-150644 | 2012-07-04 |
Publications (1)
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WO2014007180A1 true WO2014007180A1 (ja) | 2014-01-09 |
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ID=49881936
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PCT/JP2013/067909 WO2014007180A1 (ja) | 2012-07-04 | 2013-06-28 | 電磁継電器 |
Country Status (5)
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US (1) | US9653236B2 (ja) |
EP (1) | EP2871660B1 (ja) |
JP (1) | JP6066598B2 (ja) |
KR (1) | KR101606514B1 (ja) |
WO (1) | WO2014007180A1 (ja) |
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JP2018106943A (ja) * | 2016-12-27 | 2018-07-05 | 富士通コンポーネント株式会社 | 電磁継電器 |
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US11108225B2 (en) | 2017-11-08 | 2021-08-31 | Eaton Intelligent Power Limited | System, method, and apparatus for power distribution in an electric mobile application using a combined breaker and relay |
US11070049B2 (en) | 2017-11-08 | 2021-07-20 | Eaton Intelligent Power Limited | System, method, and apparatus for power distribution in an electric mobile application using a combined breaker and relay |
CN111448731B (zh) | 2017-11-08 | 2023-06-30 | 伊顿智能动力有限公司 | 用于电动移动应用的电源分配单元和熔断器管理 |
CN117239674A (zh) * | 2018-04-10 | 2023-12-15 | 伊顿智能动力有限公司 | 在电动移动应用中进行电源分配的系统、方法和装置 |
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US20230178314A1 (en) * | 2020-04-24 | 2023-06-08 | Uchiya Thermostat Co., Ltd. | Arc Binding Mechanism |
KR102246384B1 (ko) * | 2020-10-28 | 2021-04-29 | 주식회사 와이엠텍 | 아크 소호 능력을 갖는 힌지형 직류 양방향 접점 장치 |
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2013
- 2013-06-28 US US14/232,798 patent/US9653236B2/en active Active
- 2013-06-28 KR KR1020147002768A patent/KR101606514B1/ko active IP Right Grant
- 2013-06-28 EP EP13813654.4A patent/EP2871660B1/en active Active
- 2013-06-28 WO PCT/JP2013/067909 patent/WO2014007180A1/ja active Application Filing
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JPH0622087B2 (ja) | 1987-05-25 | 1994-03-23 | 松下電工株式会社 | 封止接点装置 |
JPH0622415A (ja) | 1992-04-21 | 1994-01-28 | Matsushita Electric Works Ltd | 封止接点装置 |
JPH07235248A (ja) | 1994-02-22 | 1995-09-05 | Nippondenso Co Ltd | プランジャ型電磁継電器 |
JP2002334644A (ja) | 2001-05-10 | 2002-11-22 | Toyota Motor Corp | 電磁継電器 |
JP2003272465A (ja) * | 2002-03-18 | 2003-09-26 | Sumitomo Electric Ind Ltd | 直流リレー |
Non-Patent Citations (1)
Title |
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Cited By (1)
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JP2018106943A (ja) * | 2016-12-27 | 2018-07-05 | 富士通コンポーネント株式会社 | 電磁継電器 |
Also Published As
Publication number | Publication date |
---|---|
EP2871660B1 (en) | 2017-08-16 |
US20140151337A1 (en) | 2014-06-05 |
EP2871660A4 (en) | 2016-03-23 |
JP6066598B2 (ja) | 2017-01-25 |
KR101606514B1 (ko) | 2016-03-25 |
US9653236B2 (en) | 2017-05-16 |
KR20140028141A (ko) | 2014-03-07 |
JP2014013695A (ja) | 2014-01-23 |
EP2871660A1 (en) | 2015-05-13 |
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