JPH09320376A - Switch for direct current - Google Patents

Switch for direct current

Info

Publication number
JPH09320376A
JPH09320376A JP15314096A JP15314096A JPH09320376A JP H09320376 A JPH09320376 A JP H09320376A JP 15314096 A JP15314096 A JP 15314096A JP 15314096 A JP15314096 A JP 15314096A JP H09320376 A JPH09320376 A JP H09320376A
Authority
JP
Japan
Prior art keywords
contact
magnet
movable contact
fixed contact
movable
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP15314096A
Other languages
Japanese (ja)
Inventor
Satoshi Suzuki
智 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawamura Electric Inc
Original Assignee
Kawamura Electric Inc
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 Kawamura Electric Inc filed Critical Kawamura Electric Inc
Priority to JP15314096A priority Critical patent/JPH09320376A/en
Publication of JPH09320376A publication Critical patent/JPH09320376A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a switch which generates hardly an arc between a movable contact and a magnet when a movable contact point is sepatated from a fixed contact point, without insulating between the movable contact and the magnet. SOLUTION: In this switch 1, a fixed contact 2 and a movable contact 3 are provided opposing each other, a fixed contact point 2a is provided to the fixed contact 2, while a movable contact point 3a is provided to the movable contact 2, the fixed contact point 2a and the movable contact point 3a are formed allowable to contact and separate by the ON and OFF of a pressing means, and a magnet 4 is installed to the fixed contact 2 near the contact position of the fixed contact point 2a and the movable contact point 3a. In this case, the distance β between the magnet 4 provided near the fixed contact 2, and the movable contact 3, is set smaller than the separating distance αbetween the fixed contact point 2a and the movable contact point 3a, so as to make α>β, while the magnet 4 is formed of a ferrite magnet.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、直流用開閉器の可
動接点が固定接点から開離する際に生ずるアークを消弧
するための方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for extinguishing an arc generated when a movable contact of a DC switch is separated from a fixed contact.

【０００２】[0002]

【従来の技術】従来、直流用開閉器の可動接点が固定接
点から開離する際に生ずるアークを消弧するためには、
図２に示す技術があった。即ち、直流用開閉器１１は、
固定接触子１２と可動接触子１３とを対向して配し、固
定接触子１２に固定接点１２ａを設け、可動接触子１３
に可動接点１３ａを設け、押圧手段のオン・オフにより
固定接点１２ａと可動接点１３ａとが接触・開離可能に
形成され、固定接点１２ａと可動接点１３ａとの接触箇
所の近傍で固定接触子１２に配した磁石１４により可動
接点１３ａが固定接点１２ａから開離する際に発生する
アークを消弧する。2. Description of the Related Art Conventionally, in order to extinguish an arc generated when a movable contact of a DC switch is separated from a fixed contact,
There was a technique shown in FIG. That is, the DC switch 11 is
The fixed contact 12 and the movable contact 13 are arranged to face each other, and the fixed contact 12 is provided with a fixed contact 12a.
A movable contact 13a is provided on the fixed contact 12a and the movable contact 13a are formed so that the fixed contact 12a and the movable contact 13a can come into contact with and separate from each other by turning the pressing means on and off. The magnet 14 disposed at the position extinguishes the arc generated when the movable contact 13a is separated from the fixed contact 12a.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、この直
流用開閉器１１に用いられるアークを移行させるための
磁石４は、アルニコ磁石、鉄・クロム・コバルト磁石の
ような鋳造磁石や希土類磁石等であり、これらの電気抵
抗は鋳造磁石の場合６５〜７５μΩ・cm、希土類磁石の
場合５０〜１５０μΩ・cmと小さく、このため可動接触
子と磁石との間にアークが発生し、電流を遮断すること
ができなくなることがあるため、可動接触子と磁石との
間を絶縁板１５等で絶縁する必要があった。可動接触子
と磁石との間を絶縁板等で絶縁すると部品点数が増加
し、製造コストを上昇させるという欠点があった。However, the magnet 4 for transferring the arc used in the DC switch 11 is a casting magnet such as an alnico magnet, an iron / chromium / cobalt magnet, or a rare earth magnet. The electric resistance of these magnets is as small as 65 to 75 μΩ · cm for cast magnets and 50 to 150 μΩ · cm for rare earth magnets. Therefore, an arc may be generated between the movable contact and the magnet to interrupt the current. Since it may not be possible, it is necessary to insulate the movable contactor and the magnet with the insulating plate 15 or the like. If the movable contactor and the magnet are insulated from each other by an insulating plate or the like, the number of parts is increased and the manufacturing cost is increased.

【０００４】[0004]

【課題を解決するための手段】上記従来の直流用開閉器
の問題点に鑑み、本発明の目的は、可動接触子と磁石と
の間を絶縁することなく、可動接点が固定接点から開離
する際に可動接触子と磁石との間にアークを発生させに
くくする直流用開閉器を提供するもので、固定接触子と
可動接触子とを対向して配し、前記固定接触子に固定接
点を設け、前記可動接触子に可動接点を設け、押圧手段
のオン・オフにより前記可動接点と前記固定接点とを接
触・開離可能に形成され、前記固定接点と前記可動接点
との接触箇所の近傍に配した磁石により可動接点が固定
接点から開離する際に生ずるアークを消弧する直流用開
閉器において、前記固定接点と前記可動接点との間の開
離距離よりも、前記固定接触子の近傍に設けた磁石と前
記可動接触子との間の距離を小さく設定すると共に、前
記磁石をフェライト磁石で形成することである。In view of the problems of the above-mentioned conventional DC switch, an object of the present invention is to separate the movable contact from the fixed contact without insulating the movable contact from the magnet. The present invention provides a switch for direct current that makes it difficult to generate an arc between a movable contact and a magnet when the fixed contact and the movable contact are arranged to face each other, and the fixed contact is fixed to the fixed contact. The movable contact is provided with a movable contact, and the movable contact and the fixed contact can be contacted / separated by turning on / off the pressing means, and the contact point of the fixed contact and the movable contact can be formed. In a switch for direct current that extinguishes an arc generated when a movable contact is separated from a fixed contact by a magnet arranged in the vicinity, the fixed contact is more than a separation distance between the fixed contact and the movable contact. Between the magnet provided near the Sets a distance smaller, the magnet is to form a ferrite magnet.

【０００５】[0005]

【発明の実施の形態】フェライト磁石の電気抵抗は大き
く、このため可動接点が固定接点から開離する際に、可
動接触子と磁石との間にアークが発生することがほとん
どなく、電流を遮断することができなくなることがない
ので、可動接触子と磁石との間を絶縁板等で絶縁する必
要がない。BEST MODE FOR CARRYING OUT THE INVENTION Since the electric resistance of a ferrite magnet is large, when the movable contact is separated from the fixed contact, an arc is hardly generated between the movable contact and the magnet, and the current is cut off. Therefore, it is not necessary to insulate the movable contact from the magnet with an insulating plate or the like.

【０００６】[0006]

【実施例】本発明に係る直流用開閉器の一実施例を図１
に示す。以下この図面に基づいて本発明を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a DC switch according to the present invention is shown in FIG.
Shown in Hereinafter, the present invention will be described with reference to the drawings.

【０００７】直流用開閉器１は、固定接触子２と可動接
触子３とを対向して配し、固定接触子２に固定接点２ａ
を設け、可動接触子３に可動接点３ａを設け、押圧手段
のオン・オフにより固定接点２ａと可動接点３ａとが接
触・開離可能に形成され、固定接点２ａと可動接点３ａ
との接触箇所の近傍で固定接触子２に磁石４が装着され
ている。固定接点２ａと可動接点３ａとの間の開離距離
αよりも、固定接触子２の近傍に設けた磁石４と可動接
触子３との間の距離βを小さく設定され、α＞βとする
と共に、磁石４はフェライト磁石で形成されている。In the DC switch 1, a fixed contact 2 and a movable contact 3 are arranged to face each other, and the fixed contact 2 has a fixed contact 2a.
The movable contact 3a is provided with a movable contact 3a, and the fixed contact 2a and the movable contact 3a are formed so as to come into contact with and separate from each other by turning the pressing means on and off.
The magnet 4 is attached to the fixed contactor 2 in the vicinity of the contact point with. The distance β between the magnet 4 and the movable contactor 3 provided in the vicinity of the fixed contactor 2 is set smaller than the opening distance α between the fixed contactor 2a and the movable contactor 3a, and α> β. At the same time, the magnet 4 is formed of a ferrite magnet.

【０００８】フェライト磁石の電気抵抗は１０10μΩ・
cm以上と大きく、このため可動接点が固定接点から開離
する際に、可動接触子と磁石との間にアークが発生する
ことがほとんどなく、電流を遮断することができなくな
ることがないので、可動接触子と磁石との間を絶縁板等
で絶縁する必要がない。The electric resistance of a ferrite magnet is 10 10 μΩ.
Since it is large as cm or more, when the movable contact is separated from the fixed contact, an arc is hardly generated between the movable contact and the magnet, and the current cannot be interrupted. There is no need to insulate the movable contactor from the magnet with an insulating plate or the like.

【０００９】[0009]

【発明の効果】以上のように本発明に係る直流用開閉器
は、固定接触子と可動接触子とを対向して配し、前記固
定接触子に固定接点を設け、前記可動接触子に可動接点
を設け、押圧手段のオン・オフにより前記可動接点と前
記固定接点とを接触・開離可能に形成され、前記固定接
点と前記可動接点との接触箇所の近傍に配した磁石によ
り可動接点が固定接点から開離する際に生ずるアークを
消弧する直流用開閉器において、前記固定接点と前記可
動接点との間の開離距離よりも、前記固定接触子の近傍
に設けた磁石と前記可動接触子との間の距離を小さく設
定すると共に、前記磁石をフェライト磁石で形成するこ
とによって、可動接触子と磁石との間にアークが発生す
ることがほとんどなく、電流を遮断することができなく
なるため、可動接触子と磁石との間を絶縁板等で絶縁す
る必要がなくなり、絶縁のための部品点数を削減できる
ので、製造コストを下げることができるという効果があ
る。As described above, in the DC switch according to the present invention, the fixed contact and the movable contact are arranged to face each other, the fixed contact is provided with the fixed contact, and the movable contact is movable. A contact is provided so that the movable contact and the fixed contact can be contacted / separated by turning on / off the pressing means. In a direct current switch for extinguishing an arc generated when a fixed contact is separated, a magnet provided near the fixed contact and the movable member are provided more than a separation distance between the fixed contact and the movable contact. By setting the distance between the contact and the magnet to be small and forming the magnet with a ferrite magnet, an arc hardly occurs between the movable contact and the magnet, and the current cannot be interrupted. Because of its movable contact It is not necessary to insulate between the child and the magnet in the insulating plate or the like, since the number of parts can be reduced for insulation, there is an effect that the manufacturing cost can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明に係る直流用開閉器の一実施例の説明図
である。FIG. 1 is an explanatory diagram of an embodiment of a DC switch according to the present invention.

【図２】従来の直流用直流用開閉器の説明図である。FIG. 2 is an explanatory diagram of a conventional DC DC switch.

【符号の説明】[Explanation of symbols]

１・・・直流用開閉器、２・・・固定接触子、２ａ・・
・固定接点、３・・・可動接触子、３ａ・・・可動接
点、４・・・磁石。1 ... DC switch, 2 ... fixed contact, 2a ...
-Fixed contact, 3 ... movable contact, 3a ... movable contact, 4 ... magnet.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 固定接触子と可動接触子とを対向して配
し、前記固定接触子に固定接点を設け、前記可動接触子
に可動接点を設け、押圧手段のオン・オフにより前記可
動接点と前記固定接点とを接触・開離可能に形成され、
前記固定接点と前記可動接点との接触箇所の近傍に配し
た磁石により可動接点が固定接点から開離する際に生ず
るアークを消弧する直流用開閉器において、前記固定接
点と前記可動接点との間の開離距離よりも、前記固定接
触子の近傍に設けた磁石と前記可動接触子との間の距離
を小さく設定すると共に、前記磁石をフェライト磁石で
形成することを特徴とする直流用開閉器。1. A fixed contact and a movable contact are arranged to face each other, a fixed contact is provided on the fixed contact, a movable contact is provided on the movable contact, and the movable contact is turned on / off by a pressing means. And the fixed contact are formed so as to be able to contact and separate,
In a DC switch for extinguishing an arc generated when the movable contact is separated from the fixed contact by a magnet arranged near the contact point between the fixed contact and the movable contact, the fixed contact and the movable contact are The distance between the magnet provided in the vicinity of the fixed contact and the movable contact is set to be smaller than the separation distance between the two, and the magnet is formed of a ferrite magnet. vessel.
JP15314096A 1996-05-23 1996-05-23 Switch for direct current Pending JPH09320376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15314096A JPH09320376A (en) 1996-05-23 1996-05-23 Switch for direct current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15314096A JPH09320376A (en) 1996-05-23 1996-05-23 Switch for direct current

Publications (1)

Publication Number Publication Date
JPH09320376A true JPH09320376A (en) 1997-12-12

Family

ID=15555894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15314096A Pending JPH09320376A (en) 1996-05-23 1996-05-23 Switch for direct current

Country Status (1)

Country Link
JP (1) JPH09320376A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831985A1 (en) * 2001-11-07 2003-05-09 Dav Car high current microcontact having contact moving fixed terminal/away from fixed terminal creating transverse magnetic air gap around one millimetre.
WO2003041103A1 (en) * 2001-11-07 2003-05-15 Dav Microswitch with reduced air gap and the related microswitch upgrading method
JP2014127415A (en) * 2012-12-27 2014-07-07 Kawamura Electric Inc Dc switch
JP2014127414A (en) * 2012-12-27 2014-07-07 Kawamura Electric Inc Dc switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2831985A1 (en) * 2001-11-07 2003-05-09 Dav Car high current microcontact having contact moving fixed terminal/away from fixed terminal creating transverse magnetic air gap around one millimetre.
WO2003041103A1 (en) * 2001-11-07 2003-05-15 Dav Microswitch with reduced air gap and the related microswitch upgrading method
JP2014127415A (en) * 2012-12-27 2014-07-07 Kawamura Electric Inc Dc switch
JP2014127414A (en) * 2012-12-27 2014-07-07 Kawamura Electric Inc Dc switch

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