WO2023135992A1 - Contacteur électromagnétique - Google Patents

Contacteur électromagnétique Download PDF

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Publication number
WO2023135992A1
WO2023135992A1 PCT/JP2022/045155 JP2022045155W WO2023135992A1 WO 2023135992 A1 WO2023135992 A1 WO 2023135992A1 JP 2022045155 W JP2022045155 W JP 2022045155W WO 2023135992 A1 WO2023135992 A1 WO 2023135992A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
arc
extinguishing
case
engaging portion
Prior art date
Application number
PCT/JP2022/045155
Other languages
English (en)
Japanese (ja)
Inventor
充哉 伊藤
幸悦 高谷
翔太 菊地
Original Assignee
富士電機機器制御株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士電機機器制御株式会社 filed Critical 富士電機機器制御株式会社
Priority to CN202280046377.3A priority Critical patent/CN117581325A/zh
Priority to KR1020237044881A priority patent/KR20240011830A/ko
Priority to JP2023573905A priority patent/JP7487852B2/ja
Publication of WO2023135992A1 publication Critical patent/WO2023135992A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays

Definitions

  • the present invention relates to an electromagnetic contactor, and more particularly to a structure for holding an arc extinguishing cover.
  • the magnetic contactor is provided with a lower case and an upper case made of insulating synthetic resin material, and the upper case is fixed with terminals each having a contact, and an arc extinguishing chamber in the upper case.
  • a contact portion having a movable contact and a fixed contact is housed in the housing.
  • An electromagnet for driving the contact portion is housed in the lower case.
  • An arc-extinguishing cover is attached to the upper case to cover the contact portion in the arc-extinguishing chamber.
  • the electromagnetic contactor of Patent Document 1 has a first engaging portion and a second engaging portion formed on one of the upper case and the arc extinguishing cover, and the first engaging portion and the second engaging portion on the other.
  • a gap is formed between the arc-extinguishing cover and the upper case by setting the second engagement state in which the joining portion and the third engaging portion are engaged, and the generated arc gas is released to the outside, resulting in the internal pressure of the arc-extinguishing chamber. are trying to reduce
  • the present invention prevents the engagement force of the arc-extinguishing cover with respect to the case from decreasing when shifting from the first engaged state to the second engaged state, thereby releasing the arc gas generated in the arc-extinguishing chamber to the outside.
  • an electromagnetic contactor includes a case in which a contact portion having a movable contact and a fixed contact is housed in an arc-extinguishing chamber, and a case that covers the arc-extinguishing chamber.
  • the arc extinguishing cover is formed with a first engaging portion and a second engaging portion spaced apart in the mounting direction with respect to the case, and the case has a third engaging portion and a fourth engaging portion are formed, and in the first engaging state in which the first engaging portion and the third engaging portion are engaged, the arc-extinguishing cover is attached to the case so as to seal the arc-extinguishing chamber.
  • the arc-extinguishing cover In the second engagement state in which the second engaging portion and the fourth engaging portion are engaged, the arc-extinguishing cover is held by the case with a gap provided between the arc-extinguishing cover and the case.
  • the first engagement state in which the arc-extinguishing cover is attached to the case is shifted to the second engagement state in which a gap is provided between the arc-extinguishing cover and the case.
  • FIG. 3 is a cross-sectional view of a main part taken along line IV-IV in FIG. 2; It is the figure which showed the arc-extinguishing cover from the front side. It is the figure which showed the arc-extinguishing cover from the back side. It is a perspective view which shows the shape of the upper case side which removed the arc-extinguishing cover.
  • FIG. 3 is a cross-sectional view of essential parts taken along the line XX in FIG. 2, showing a first engagement state in which the arc-extinguishing cover is attached to the upper case
  • FIG. 10 is a cross-sectional view of a main part showing a second engagement state in which the arc-extinguishing cover is attached to the upper case with a gap;
  • an electromagnetic contactor 1 showing an embodiment according to the present invention is divided into upper and lower parts, and is provided with a lower case 2 and an upper case 3 which are formed of an insulating synthetic resin material. ing.
  • the upper case 3 is provided with main circuit power supply side terminal portions 4a1 to 4c1, main circuit load side terminal portions 4a2 to 4c2, auxiliary power supply side terminal portion 4d1, and auxiliary load side terminal portion 4d2, which will be described later.
  • An arc-extinguishing cover 7 for sealing the arc-extinguishing chamber 12 is attached.
  • An electromagnet (not shown) for driving a contact portion 6, which will be described later, is housed in the lower case 2, and a pair of coil terminals 4e for the electromagnet are fixed to the lower case 2. As shown in FIG.
  • FIG. 3 shows a state in which the arc extinguishing cover 7 is removed from the upper case 3 of the electromagnetic contactor 1.
  • the upper case 3 is formed with a pair of main circuit case walls 10a and 10b that are spaced apart in the left-right direction and continuously extend in the front-rear direction, partitioning the main circuit case walls 10a and 10b in parallel, Two pairs of case partition walls 11a1, 11a2 and 11b1, 11b2 are formed spaced apart from each other in the front-rear direction. Further, an auxiliary circuit case wall 11c is formed in parallel with the outside of the main circuit case wall 10a.
  • main circuit case walls 10a, 10b and the case partition walls 11a1, 11a1 and 11b1, 11b2, the main circuit power supply side terminal portions 4a1 to 4c1 and the main circuit load side terminal portions 4a2 to 4c2 are arranged,
  • An auxiliary power supply side terminal portion 4d1 and an auxiliary load side terminal portion 4d2 are arranged between the main circuit case wall 10a and the auxiliary circuit case wall 11c.
  • a contact portion 6 is arranged in a central portion of the upper case 3 surrounded by a pair of main circuit case walls 10a and 10b and case partition walls 11a and 11b.
  • a sealed arc extinguishing chamber 12 is provided as shown in FIG.
  • the contact portion 6 includes fixed contacts 13a of the power supply side terminal portions 4a1 to 4c1 of the main circuit (only the fixed contact 13a of the power supply side terminal portion 4b1 of the main circuit is shown in FIG. 4) and the main circuit.
  • the fixed contacts 13b of the load-side terminal portions 4a2 to 4c2 (only the fixed contact 13b of the load-side terminal portion 4b2 is shown in FIG. 4) and the fixed contacts 13a and 13b supported by the contact support 14 are connected to the movable contacts 15a and 15b. and a movable contactor 15 that contacts and separates.
  • a movable iron core 16 constituting an electromagnet is connected to the contact support 14. When an exciting coil (not shown) constituting the electromagnet is excited, the contact support 14 moves downward in FIG. Then, the movable contacts 15a and 15b come into contact with the fixed contacts 13a and 13b, resulting in a closed state.
  • the arc-extinguishing cover 7 includes a plate-shaped cover body 20, and a first cover wall portion 21 and a second cover wall portion 21 and a second cover wall portion 21 and a second cover wall portion 21 which are formed facing each other from the front-rear edge of the cover body 20, as shown in FIG. a wall portion 22; 5 is a front view of the arc-extinguishing cover 7 before being attached to the upper case 3 shown in FIG. 3, and FIG. 6 is a rear view of the arc-extinguishing cover 7 shown in FIG. shows a diagram.
  • the first cover wall portion 21 has an auxiliary partition wall 23 and power source partition walls 24a to 24c separated from each other in the left and right direction.
  • Cover-side engagement portions 25a-25f are formed on the edges of the cover-side engaging portions 25a-25f projecting outward in the left-right direction from positions inside the outer surfaces of the power supply-side partition walls 24a-24c and extending in the up-down direction.
  • a second hook portion 26 is formed at a lower position apart from the cover main body 20 of each of the cover side engaging portions 25a to 25f.
  • a first hook portion 27 is formed at an upper position closer to the cover main body 20 than the second hook portion 26 to the cover side engaging portion 25b formed on the left edge portion of the power supply side partition wall 24a.
  • the cover-side engaging portion 25e formed on the right edge of the power source-side partition wall 24c is also formed with a first hook portion 27 at an upper position closer to the cover main body 20 than the second hook portion 26 is. .
  • the second cover wall portion 22 has an auxiliary partition wall 28 and load-side partition walls 29a to 29c separated from each other in the left-right direction.
  • Cover-side engaging portions 30a-30f are formed on both edges of the load-side partition walls 29a-29c so as to protrude outward in the left-right direction and extend in the up-down direction.
  • a second hook portion 31 is formed at a lower position apart from the cover main body 20 of each of the cover side engaging portions 30a to 30f.
  • a first hook portion 32 is formed at an upper position closer to the cover main body 20 than the second hook portion 31 to the cover side engaging portion 30b formed on the left edge portion of the load side partition wall 29a.
  • a first hook portion 32 is also formed on the cover-side engaging portion 30e formed on the right edge portion of the load-side partition wall 29c at an upper position closer to the cover main body 20 than the second hook portion 31. .
  • cover side engaging portions 33a to 33d are provided inside the pair of main circuit case walls 10a and 10b and case partition walls 11a1 and 11a2 of the upper case 3 (on the side close to the contact portion 6). formed.
  • the cover-side engaging portion 33a is a plate-like portion extending in the left-right direction continuously from a portion of the main circuit case wall 10a, and the cover-side engaging portion 33d also extends from a portion of the main circuit case wall 10b. It is a plate-like portion continuously extending in the left-right direction.
  • the cover-side engaging portions 33b and 33c are C-shaped members extending in the left-right direction continuously from portions of the case partition walls 11a1 and 11a2.
  • Engagement stabilizing plates 34a to 34f are formed in parallel at positions spaced rearward from the cover-side engagement portions 33a to 33d.
  • the surfaces of the cover-side engaging portions 33a to 33d that face the most downward direction correspond to the cover-side engaging portions 25a to 25f of the first cover wall portion 21 of the arc-extinguishing cover 7, respectively. It is a second hook engaging portion 35 that engages with the second hook portion 26 provided in the . Further, the downward facing surfaces of the C-shaped notches of the cover-side engaging portions 33b and 33c are engaged with the first hook portions 27 provided on the cover-side engaging portions 25b and 25e of the first cover wall portion 21. It is a first hook engaging portion 36 that fits.
  • cover-side engaging portions 33a to 33d having the same shape are also provided inside the pair of main circuit case walls 10a and 10b and the case partition walls 11b1 and 11b2 of the upper case 3 (on the side near the contact portion 6). is formed. Further, the cover side engaging portions 33a to 33d are provided with second hooks that engage with the second hook portions 31 provided on the respective cover side engaging portions 30a to 30f of the second cover wall portion 22 of the arc extinguishing cover 7. An engaging portion 35 is formed. A first hook engaging portion 36 that engages with the first hook portion 32 provided on the cover side engaging portions 30b and 30e of the second cover wall portion 22 is formed. Engagement stabilizing plates 34a to 34f are formed in parallel at positions spaced forward from the cover-side engagement portions 33a to 33d.
  • FIG. 9 is a cross-sectional view of the main part taken along line XX of FIG.
  • the vertical direction in FIG. 9 is called the mounting direction of the arc-extinguishing cover 7 .
  • the second hook engaging portion 35 and the first hook engaging portion 36 provided on the front and rear sides of the upper case 3 are engaged perpendicularly to the mounting direction of the arc-extinguishing cover 7. formed as a surface.
  • the cover-side engaging portion 25b of the first cover wall portion 21 arranged on the front side and the cover-side engaging portion 30b of the second cover wall portion 22 arranged on the rear side extend along the mounting direction of the arc-extinguishing cover 7.
  • the cover side engaging portions 25a, 25c to 25f of the first cover wall portion 21 and the cover side engaging portions 30a, 30c to 30 of the second cover wall portion 22 are also arranged in the mounting direction of the arc extinguishing cover 7. are placed along the Second hook portions 26 provided on the cover side engaging portions 25a to 25f of the first cover wall portion 21, and second hook portions 31 provided on the cover side engaging portions 30a to 30f of the second cover wall portion 22. Hook engaging surfaces 26a and 31a perpendicular to the mounting direction of the arc extinguishing cover 7 are formed on the upper surface of the .
  • a first hook portion 32 provided on the cover-side engaging portion 30b of the portion 22 and a first hook portion 32 (see FIG. 6) provided on the cover-side engaging portion 30e are formed to protrude in a triangular cross-sectional shape.
  • the first hook portion 27 of the first cover wall portion 21 engages the first hook engaging portion 36 on the front side of the upper case 3
  • the first hook portion 32 of the second cover wall portion 22 engages the upper case 3 . It engages with the first hook engaging portion 36 on the rear side.
  • the arc-extinguishing cover 7 attached to the upper case 3 is such that the auxiliary-side partition wall 23 and the power-source-side partition walls 24a to 24c of the first cover wall portion 21 are connected to the auxiliary-power-side terminal portion 4d1 and the power-source-side terminal portions 4a1 to 4c1. and the contact portion 6, and the auxiliary load side partition wall 29 and the load side partition walls 29a to 29c of the second cover wall portion 22 separate the contact portion 6 from the auxiliary load side terminal portion 4d2 and the load side terminal portions 4a2 to 4c2.
  • the arc extinguishing chamber 12 is hermetically sealed by partitioning the space and covering the upper part of the contact part 6 with the cover body 20 .
  • the upper case 3 is formed with engagement stabilizing plates 34a-34f. 25a to 25f, and also along the front sides of the cover-side engagement portions 30a to 30f of the second cover wall portion 22. As shown in FIG.
  • a gap is formed between the cover body 20 of the arc-extinguishing cover 7 and the upper portion of the upper case 3, and this gap serves as a gas release hole to release the arc gas in the arc-extinguishing chamber 12 to the outside, thereby extinguishing the arc.
  • the internal pressure of the chamber 12 is reduced to prevent the arc-extinguishing cover 7 from being blown away.
  • first hook portions 27 and 32 of the arc extinguishing cover 7 are engaged with the first hook engaging portions 36 of the upper case 3, and the arc extinguishing cover 7 is attached to the upper case 3 while sealing the arc extinguishing chamber 12.
  • This state is called a first engaged state.
  • the second hook portions 26 and 31 of the arc extinguishing cover 7 are engaged with the second hook engaging portions 35 of the upper case 3, and arc extinguishing is performed with a gap provided between the upper case 3 and the arc extinguishing cover 7.
  • a state in which the cover 7 is attached to the upper case 3 is referred to as a second engaged state.
  • the effects of the electromagnetic contactor 1 of this embodiment will be described.
  • the arc-extinguishing cover 7 in the first engagement state in which the arc-extinguishing cover 7 seals the arc-extinguishing chamber 12 and is mounted on the upper case 3 , the arc-extinguishing cover is attached to the first hook engaging portion 36 provided on the upper case 3 .
  • the first hook portions 27 and 32 provided on 7 are engaged.
  • the engagement of the first hook engaging portion 36 and the first hook portions 27, 32 with weak engaging force is disengaged.
  • the second hook engaging portion 35 and the second hook portions 26 and 31 provided on the arc-extinguishing cover 7 are engaged with each other with a strong engaging force, and the arc-extinguishing cover 7 and the upper case 3 are provided with a gap. Since the mating state is established, the arc gas in the arc extinguishing chamber 12 is released to the outside, and the arc extinguishing cover 7 can be reliably prevented from blowing off from the upper case 3. - ⁇
  • the first hook engaging portion 36 of the upper case 3 and the first hook portions 27, 32 of the arc-extinguishing cover 7 are engaged.
  • the second hook engaging portion 35 is engaged with the second hook portions 26 and 31 of the arc-extinguishing cover 7, and different portions of the arc-extinguishing cover 7 are engaged in the first engaged state and the second engaged state.
  • the engaging portion (the first hook engaging portion 36 and the first hook portions 27, 32) in the first engaging state is damaged due to, for example, a sudden increase in the internal pressure of the arc-extinguishing chamber 12, the second engaging portion will not be engaged.
  • the engaging force in the joined state does not decrease.
  • the cover-side engagement portions 25a to 25f formed in the first cover wall portion 21 of the arc-extinguishing cover 7 are largely displaced to the rear side.
  • the engagement stabilizing plates 34a to 34f provided on the upper case 3 move the cover side engaging portions 25a to 25f, A large displacement is regulated by contacting 30a to 30f. Therefore, the engagement of the second hook engaging portion 35 and the second hook portions 26, 31 can always be stably performed when shifting from the first engaged state to the second engaged state.
  • Electromagnetic contactor 1 2 Lower case 3 Upper case (case) 4a1, 4b1, 4c1 Main circuit power supply side terminal 4a2, 4b2, 4c2 Main circuit load side terminal 4d1 Auxiliary power supply side terminal 4d2 Auxiliary load side terminal 4e Coil terminal 6
  • Contact 7 Arc extinguishing cover 8
  • Terminal cover 10a 10b
  • Case partition wall 11c Auxiliary circuit case wall 12
  • Cover body 21 first cover wall portion 22 second cover wall portion 23 auxiliary side partition walls 24a, 24b, 24c power source side partition walls 25a to 25f cover side engaging portion 26 second hook portion (second engaging portion) 26a hook engaging surface (second engaging surface) 27 first hook portion (first engaging portion) 28 auxiliary side partition walls 29a, 29b,

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

Ce contacteur électromagnétique comprend : un boîtier (3) qui loge une partie de contact (6) présentant un contact mobile (15a), (15b) et un contact fixe (13a), (13b) dans une chambre d'extinction d'arc (12); et un couvercle d'extinction d'arc (7) qui recouvre la chambre d'extinction d'arc et est fixé au boîtier (3). Dans le couvercle d'extinction d'arc, une première partie de mise en prise (27), (32) et une deuxième partie de mise en prise (26), (31) sont formées pour être séparées l'une de l'autre dans la direction de fixation au boîtier. Dans le boîtier, une troisième partie de mise en prise (36) et une quatrième partie de mise en prise (35) sont formées. Le couvercle d'extinction d'arc est fixé au boîtier dans un premier état de mise en prise dans lequel la première partie de mise en prise et la troisième partie de mise en prise viennent en prise l'une avec l'autre. En outre, le couvercle d'extinction d'arc est fixé au boîtier, un espace étant disposé entre eux, dans un second état de mise en prise dans lequel la deuxième partie de mise en prise et la quatrième partie de mise en prise viennent en prise l'une avec l'autre.
PCT/JP2022/045155 2022-01-12 2022-12-07 Contacteur électromagnétique WO2023135992A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280046377.3A CN117581325A (zh) 2022-01-12 2022-12-07 电磁接触器
KR1020237044881A KR20240011830A (ko) 2022-01-12 2022-12-07 전자 접촉기
JP2023573905A JP7487852B2 (ja) 2022-01-12 2022-12-07 電磁接触器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022002928 2022-01-12
JP2022-002928 2022-01-12

Publications (1)

Publication Number Publication Date
WO2023135992A1 true WO2023135992A1 (fr) 2023-07-20

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Application Number Title Priority Date Filing Date
PCT/JP2022/045155 WO2023135992A1 (fr) 2022-01-12 2022-12-07 Contacteur électromagnétique

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Country Link
JP (1) JP7487852B2 (fr)
KR (1) KR20240011830A (fr)
CN (1) CN117581325A (fr)
WO (1) WO2023135992A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144734U (ja) * 1983-03-16 1984-09-27 株式会社日立製作所 電磁接触器
JPS62226522A (ja) * 1986-03-27 1987-10-05 三菱電機株式会社 電磁接触器
JP2008047419A (ja) * 2006-08-16 2008-02-28 Fuji Electric Fa Components & Systems Co Ltd 電磁接触器
KR20100005998U (ko) * 2008-12-04 2010-06-14 엘에스산전 주식회사 단상 전용 전자접촉기
JP2011044287A (ja) * 2009-08-20 2011-03-03 Fuji Electric Fa Components & Systems Co Ltd 電磁接触器
CN203573915U (zh) * 2013-10-30 2014-04-30 三菱电机株式会社 电磁接触器的罩部件安装结构与电磁接触器的罩部件
CN204348624U (zh) * 2015-01-12 2015-05-20 厦门宏发开关设备有限公司 一种接触器罩盖
WO2021181927A1 (fr) * 2020-03-12 2021-09-16 富士電機機器制御株式会社 Contacteur électromagnétique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7025033B2 (ja) 2019-07-06 2022-02-24 健太郎 上手 水生動物の出血を治療又は予防する方法及び水生動物用止血剤

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144734U (ja) * 1983-03-16 1984-09-27 株式会社日立製作所 電磁接触器
JPS62226522A (ja) * 1986-03-27 1987-10-05 三菱電機株式会社 電磁接触器
JP2008047419A (ja) * 2006-08-16 2008-02-28 Fuji Electric Fa Components & Systems Co Ltd 電磁接触器
KR20100005998U (ko) * 2008-12-04 2010-06-14 엘에스산전 주식회사 단상 전용 전자접촉기
JP2011044287A (ja) * 2009-08-20 2011-03-03 Fuji Electric Fa Components & Systems Co Ltd 電磁接触器
CN203573915U (zh) * 2013-10-30 2014-04-30 三菱电机株式会社 电磁接触器的罩部件安装结构与电磁接触器的罩部件
CN204348624U (zh) * 2015-01-12 2015-05-20 厦门宏发开关设备有限公司 一种接触器罩盖
WO2021181927A1 (fr) * 2020-03-12 2021-09-16 富士電機機器制御株式会社 Contacteur électromagnétique

Also Published As

Publication number Publication date
KR20240011830A (ko) 2024-01-26
CN117581325A (zh) 2024-02-20
JP7487852B2 (ja) 2024-05-21
JPWO2023135992A1 (fr) 2023-07-20

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