JPH07111853B2 - Switch - Google Patents

Switch

Info

Publication number
JPH07111853B2
JPH07111853B2 JP13020086A JP13020086A JPH07111853B2 JP H07111853 B2 JPH07111853 B2 JP H07111853B2 JP 13020086 A JP13020086 A JP 13020086A JP 13020086 A JP13020086 A JP 13020086A JP H07111853 B2 JPH07111853 B2 JP H07111853B2
Authority
JP
Japan
Prior art keywords
arc
magnet
contactor
switch
magnetic
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.)
Expired - Fee Related
Application number
JP13020086A
Other languages
Japanese (ja)
Other versions
JPS62287533A (en
Inventor
末信 浜野
博之 笹尾
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13020086A priority Critical patent/JPH07111853B2/en
Priority to EP92200220A priority patent/EP0483121B1/en
Priority to EP87305003A priority patent/EP0248677B1/en
Priority to DE3789165T priority patent/DE3789165T2/en
Priority to EP92200221A priority patent/EP0483122B1/en
Priority to DE3750482T priority patent/DE3750482T2/en
Priority to EP92200222A priority patent/EP0483123B1/en
Priority to DE3750514T priority patent/DE3750514T2/en
Priority to DE3750513T priority patent/DE3750513T2/en
Priority to US07/059,041 priority patent/US4786770A/en
Publication of JPS62287533A publication Critical patent/JPS62287533A/en
Publication of JPH07111853B2 publication Critical patent/JPH07111853B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は電気回路の開閉器に関するものであり、特
に、接触子の開離時に発生するアークを駆動するために
アークに対して交差磁束を形成するための磁石を備えた
開閉器に関するものである。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch for an electric circuit, and in particular, a cross magnetic flux is applied to the arc in order to drive the arc generated when the contactor is opened. The present invention relates to a switch having a magnet for forming.

〔従来の技術〕[Conventional technology]

第2図は実開昭59−77742号公報に示された従来の開閉
器の開離状態を示す部分縦断面図であり、第3図は第2
図の部分拡大縦断面図である。
FIG. 2 is a partial vertical sectional view showing the open state of the conventional switch shown in Japanese Utility Model Laid-Open No. 59-77742, and FIG.
It is a partial expanded longitudinal cross-sectional view of a figure.

図において、符号(1)は第1の端子板、(2)は第1
の端子板(1)に取り付けられている第1の接触子であ
る固定接触子、(3)は固定接触子(2)に対して接離
する第2の接触子である可動接触子、(4)は可動接触
子(3)に摺接する集電子、(5)は集電子(4)が取
り付けられている第2の端子板、(6)は一方の端部が
第1の端子板(1)に固着され、他方の端部に開口部を
有する外筒、(7)は外筒(6)の上記開口部に固着さ
れた絶縁物から成るノズルであつて、可動接触子(3)
が挿入されて摺動可能に形成されている貫通孔(7a)を
有している。(8)はノズル(7)に設置されている環
状の磁石、(9)は外筒(6)に囲まれて形成されてい
る絶縁消弧ガスの貯留室、(9a)は貯留室(9)の絶縁
消弧ガスが出入りする貯留室口、(10)は可動接触子
(3)が固定接触子(2)から開離するときに発生する
アークで、(11)は円筒状に形成され、その一端面が外
筒(6)の外表面に取り付けられているシリンダ、(1
2)は可動接触子(3)に取り付けられてシリンダ(1
1)の内周面に摺接するピストン、(13)はシリンダ(1
2)と外筒(6)の底面とに囲まれて形成され、可動接
触子(3)の矢印A方向の移動時に形成される負圧室で
ある。
In the figure, reference numeral (1) is a first terminal board, and (2) is a first terminal board.
A fixed contactor, which is a first contactor attached to the terminal plate (1), a movable contactor (3), which is a second contactor that contacts and separates from the fixed contactor (2), 4) is a current collector that is in sliding contact with the movable contactor (3), (5) is a second terminal plate to which the current collector (4) is attached, and (6) is one end of the first terminal plate ( An outer cylinder fixed to 1) and having an opening at the other end, and (7) a nozzle made of an insulator fixed to the opening of the outer cylinder (6), the movable contactor (3).
Has a through hole (7a) that is slidably formed therein. (8) is an annular magnet installed in the nozzle (7), (9) is a storage chamber of the insulating arc-extinguishing gas formed surrounded by the outer cylinder (6), and (9a) is a storage chamber (9 ) Insulation arc gas inlet and outlet of the storage chamber, (10) is an arc generated when the movable contact (3) is separated from the fixed contact (2), and (11) is formed in a cylindrical shape. , A cylinder whose one end surface is attached to the outer surface of the outer cylinder (6), (1
2) is attached to the movable contactor (3) and is attached to the cylinder (1
The piston that slides on the inner surface of (1), (13) is the cylinder (1
The negative pressure chamber is formed by being surrounded by 2) and the bottom surface of the outer cylinder (6) and is formed when the movable contactor (3) moves in the direction of arrow A.

次にこの従来装置の動作について説明する。Next, the operation of this conventional device will be described.

この開閉器が投入状態で、電流が第1の端子板(1)か
ら固定接触子(2)へ、そして可動接触子(3)から集
電子(4)を介して第2の端子板(5)へ流れている場
合、可動接触子(3)が駆動機構(図示しない)によつ
て矢印A方向へ駆動されると、可動接触子(3)は固定
接触子(2)から開離し、両接触子間にアーク(10)が
発生する。
When the switch is turned on, current flows from the first terminal plate (1) to the fixed contact (2) and from the movable contact (3) to the second terminal plate (5) via the current collector (4). ), When the movable contactor (3) is driven in the direction of arrow A by a drive mechanism (not shown), the movable contactor (3) separates from the fixed contactor (2), An arc (10) is generated between the contacts.

一方、環状の磁石(8)は軸方向に磁化されており、貯
留室口(9a)では半径方向成分を含む磁束(φ)を生じ
る。この磁束(φ)によりアーク(10)は周方向に力を
受け、回転アークとなつて半径方向に引き延ばされるこ
とにより、アーク(10)によるガス加熱効果を受けて、
貯留室(9)内のガス圧力を上昇させる。
On the other hand, the ring-shaped magnet (8) is magnetized in the axial direction, and a magnetic flux (φ) including a radial component is generated at the storage chamber port (9a). Due to this magnetic flux (φ), the arc (10) receives a force in the circumferential direction, and by being extended in the radial direction as a rotating arc, it receives the gas heating effect of the arc (10),
The gas pressure in the storage chamber (9) is increased.

次に、アーク発生後、電流のピーク時を過ぎて電流が零
になる過程で、絶縁消弧ガスの吹付けによつて、アーク
は消弧に至らしめられる。
Next, after the arc has been generated, the arc is extinguished by the blowing of the insulating arc-extinguishing gas in the process of passing the peak of the current and becoming zero.

なお、ピストン(12)が可動接触子(3)と共にシリン
ダ(11)内を矢印A方向に移動することによつて、負圧
室(13)内の圧力を負圧にし、これによつて、小電流し
や断時にはガス圧力の上昇しにくい貯留室(9)からの
絶縁消弧ガスの流出を補足して、小電流しや断時におけ
る消弧を補助するものである。
By moving the piston (12) together with the movable contactor (3) in the cylinder (11) in the direction of arrow A, the pressure in the negative pressure chamber (13) is reduced to a negative pressure. This is to supplement the outflow of the insulating arc-extinguishing gas from the storage chamber (9) in which the gas pressure is unlikely to rise when the current is turned off or turned off, thereby assisting the arc extinguishing when the current is turned off or turned off.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

このように構成され作用する従来の磁石を設けた開閉器
においては、小電流しや段時には、アークによるガス加
熱効果が少ないので、ガス圧の十分な上昇が得られず、
従つて、充分な消弧性能を得られないために、磁石を貯
留室口のアークに近づける必要があるが、この状態で
は、大電流しや断時には、アーク熱によつて、アークに
近付けられた磁石が熱劣化するという問題点があつた。
In a switch provided with a conventional magnet having such a structure and functioning, since the gas heating effect by the arc is small at the time of a small current or step, a sufficient increase in gas pressure cannot be obtained,
Therefore, it is necessary to bring the magnet closer to the arc of the reservoir chamber in order to obtain sufficient arc extinguishing performance, but in this state, when a large current is applied or when the arc is cut off, the magnet is brought closer to the arc. There was a problem that the magnet deteriorates due to heat.

この発明は上記のような問題点を解決するためになされ
たもので、小電流しや断性能も良く、また、大電流アー
ク発生時においても磁石の熱劣化の生じない開閉器を得
ることを目的とする。
The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to obtain a switch which does not cause thermal deterioration of a magnet even when a large current arc is generated and which has a small current and good disconnection performance. To aim.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る開閉器は、ノズルに設けられている磁石
の少なくともアーク側の磁極に磁性体を固着して設け、
貯留室のアークに接近させたものである。
The switch according to the present invention is provided with a magnetic body fixed to at least the magnetic pole on the arc side of the magnet provided in the nozzle,
It is close to the arc of the storage chamber.

〔作 用〕[Work]

この発明における開閉器は、磁石に固着された磁性体が
貯留室口のアークに接近しているので、磁場が強められ
て、小電流しや断時にもアークと強められた磁場との相
互作用によつて十分なしや断特性を有し、一方、大電流
アーク発生時にあつては、磁性体によつて磁石の熱劣化
を防いでいる。
In the switch according to the present invention, since the magnetic substance fixed to the magnet is close to the arc of the storage chamber mouth, the magnetic field is strengthened, and the interaction between the arc and the strengthened magnetic field is generated even when a small current is applied or disconnected. In this way, the magnet has sufficient disconnection and disconnection characteristics. On the other hand, when a large current arc occurs, the magnetic material prevents the heat deterioration of the magnet.

〔実施例〕〔Example〕

以下、この発明をその実施例を示す図に基づいて説明す
る。
The present invention will be described below with reference to the drawings showing its embodiments.

第1図はこの発明の一実施例による開閉器を示す部分縦
断面図であり、図において、固定接触子(2),外筒
(6),ノズル(7),貯留室(9),貯留室口(9a)
は従来装置と同等のものである。また、磁石(8)は径
方向に磁化されている。
FIG. 1 is a partial vertical sectional view showing a switch according to an embodiment of the present invention. In the figure, a fixed contactor (2), an outer cylinder (6), a nozzle (7), a storage chamber (9), a storage Room entrance (9a)
Is equivalent to the conventional device. The magnet (8) is magnetized in the radial direction.

また、(22)は磁石(8)の少なくともアーク側に位置
する内径側の磁極、この実施例では両側の磁極を覆うよ
うに固着されている環状の磁性体である。
Further, (22) is an annular magnetic body fixed so as to cover the magnetic poles on the inner diameter side located at least on the arc side of the magnet (8), in this embodiment, the magnetic poles on both sides.

このような開閉器では、磁石(8)による磁場(φ)が
磁性体(22)により強められているため、小電流しゃ断
時においても、アークとの相互作用により、十分なしゃ
断性能を発揮する。
In such a switch, since the magnetic field (φ) generated by the magnet (8) is strengthened by the magnetic body (22), even when a small current is cut off, sufficient cutoff performance is exhibited by the interaction with the arc. .

一方、大電流しゃ断時にあっては、アークエネルギーが
増大し、アークが放出する熱あるいは放射エネルギーに
より、ノズル(7)を介して磁性体(22)が加熱され
る。しかし、磁性体(22)は例えば鉄のような耐熱材料
により構成されており、磁石(8)がアークから離れて
いること、および磁性体(22)によりアークからの熱が
ブロックされるこにより、磁石(8)の熱劣化が防止さ
れている。
On the other hand, when the large current is cut off, the arc energy increases, and the heat or radiant energy emitted by the arc heats the magnetic body (22) through the nozzle (7). However, the magnetic body (22) is made of a heat-resistant material such as iron, the magnet (8) is separated from the arc, and the heat from the arc is blocked by the magnetic body (22). The heat deterioration of the magnet (8) is prevented.

なお、磁石の材質として、例えば、フエライト系、アル
ニコ系、サマリウム系希土類又はネオジウム・鉄・ボロ
ン系磁石などがあるが、磁力の強い磁石であればより消
弧効果は大きい。
Examples of the material of the magnet include ferrite type, alnico type, samarium type rare earth or neodymium / iron / boron type magnets, but a magnet having a strong magnetic force has a greater arc extinguishing effect.

〔発明の効果〕〔The invention's effect〕

以上のように、この発明によれば、ノズルに設けられた
磁石が径方向に磁化されており、かつ少なくともアーク
側に位置する磁極、即ち内径側の磁極を覆うように磁石
に磁性体を固着して設けたので、磁石そのものをアーク
に近付けることなく、アークに作用する磁場を効果的に
強力にすることができ、これにより小電流しゃ断性能を
向上させることができるとともに、ノズルの内側に延び
るアークの熱影響を磁性体により効果的に減少させて、
大電流しゃ断時の磁石の熱劣化を防止することができる
信頼性の高い開閉器を得ることができる効果を有してい
る。
As described above, according to the present invention, the magnet provided in the nozzle is magnetized in the radial direction, and the magnetic body is fixed to the magnet so as to cover at least the magnetic pole located on the arc side, that is, the magnetic pole on the inner diameter side. Since it is provided in the nozzle, the magnetic field acting on the arc can be effectively strengthened without bringing the magnet itself close to the arc, thereby improving the small current interruption performance and extending inside the nozzle. The thermal effect of the arc is effectively reduced by the magnetic substance,
This has the effect of providing a highly reliable switch that can prevent thermal deterioration of the magnet when a large current is cut off.

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

第1図はこの発明の一実施例による開閉器を示す部分拡
大縦断面図、第2図は従来の開閉器の開離状態を示す部
分縦断面図、第3図は第2図の開閉器に設けられた磁石
の設置状態を示す部分拡大縦断面図である。 図において、(2)……第1の接触子(固定接触子)、
(3)……第2の接触子(可動接触子、(6)……外
筒、(7)……ノズル、(8)……磁石、(9)……貯
留室、(9a)……貯留室口、(10)……アーク、(22)
……磁性体。 なお、各図中、同一符号は同一または相当部分を示す。
FIG. 1 is a partially enlarged vertical sectional view showing a switch according to an embodiment of the present invention, FIG. 2 is a partial vertical sectional view showing an open state of a conventional switch, and FIG. 3 is a switch shown in FIG. FIG. 6 is a partially enlarged vertical cross-sectional view showing an installation state of a magnet provided in the. In the figure, (2) ... the first contact (fixed contact),
(3) ... Second contact (movable contact, (6) ... outer cylinder, (7) ... nozzle, (8) ... magnet, (9) ... reservoir, (9a) ... Storage chamber mouth, (10) …… Ark, (22)
...... Magnetic material. In each drawing, the same reference numerals indicate the same or corresponding parts.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−61223(JP,A) 特開 昭52−101478(JP,A) 実開 昭59−77742(JP,U) 実開 昭55−57239(JP,U) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-61223 (JP, A) JP-A-52-101478 (JP, A) Actually opened 59-77742 (JP, U) Actually opened 55- 57239 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】第1の接触子、この第1の接触子に対して
開閉動作をする第2の接触子、上記第1の接触子を収納
し絶縁消弧ガスを貯留する貯留室を形成する外筒、この
外筒の上記第2の接触子側の一端に設けられて上記第2
の接触子が摺動可能に挿入されるノズル、このノズルに
設けられているとともに径方向に磁化されている環状の
若しくは環状に配した磁石、および上記両接触子の開離
時に発生するアーク側に位置する内側径の磁極を覆うよ
うに上記磁石に固着されている磁性体を備えていること
を特徴とする開閉器。
1. A first contactor, a second contactor which opens and closes with respect to the first contactor, and a storage chamber for accommodating the first contactor and storing insulating arc-extinguishing gas. The outer cylinder, which is provided at one end on the second contact side of the outer cylinder
Nozzle into which the contact is inserted slidably, an annular magnet annularly arranged in the nozzle and magnetized in the radial direction, and an arc side generated when the two contacts are separated. A switch having a magnetic body fixed to the magnet so as to cover a magnetic pole having an inner diameter located at.
JP13020086A 1986-06-06 1986-06-06 Switch Expired - Fee Related JPH07111853B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP13020086A JPH07111853B2 (en) 1986-06-06 1986-06-06 Switch
EP92200220A EP0483121B1 (en) 1986-06-06 1987-06-05 Switchgear
EP87305003A EP0248677B1 (en) 1986-06-06 1987-06-05 Switchgear
DE3789165T DE3789165T2 (en) 1986-06-06 1987-06-05 Switchgear.
EP92200221A EP0483122B1 (en) 1986-06-06 1987-06-05 Switchgear
DE3750482T DE3750482T2 (en) 1986-06-06 1987-06-05 Switching device.
EP92200222A EP0483123B1 (en) 1986-06-06 1987-06-05 Switchgear
DE3750514T DE3750514T2 (en) 1986-06-06 1987-06-05 Switching device.
DE3750513T DE3750513T2 (en) 1986-06-06 1987-06-05 Switching device.
US07/059,041 US4786770A (en) 1986-06-06 1987-06-08 Switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13020086A JPH07111853B2 (en) 1986-06-06 1986-06-06 Switch

Publications (2)

Publication Number Publication Date
JPS62287533A JPS62287533A (en) 1987-12-14
JPH07111853B2 true JPH07111853B2 (en) 1995-11-29

Family

ID=15028483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13020086A Expired - Fee Related JPH07111853B2 (en) 1986-06-06 1986-06-06 Switch

Country Status (1)

Country Link
JP (1) JPH07111853B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5940225B1 (en) * 2014-08-18 2016-06-29 三菱電機株式会社 Switchgear

Also Published As

Publication number Publication date
JPS62287533A (en) 1987-12-14

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