JPS6321718A - Switch - Google Patents
SwitchInfo
- Publication number
- JPS6321718A JPS6321718A JP16456286A JP16456286A JPS6321718A JP S6321718 A JPS6321718 A JP S6321718A JP 16456286 A JP16456286 A JP 16456286A JP 16456286 A JP16456286 A JP 16456286A JP S6321718 A JPS6321718 A JP S6321718A
- Authority
- JP
- Japan
- Prior art keywords
- storage chamber
- arc
- contact
- switch
- nozzle
- 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
Links
- 230000000694 effects Effects 0.000 description 11
- 230000004907 flux Effects 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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
、接触子の開離等に発生するアークを駆動するため１ζ
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。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a switch for an electric circuit, and in particular, a 1ζ
The present invention relates to a switch equipped with a magnet for forming a cross magnetic flux to an arc.
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る。FIG. 2 is a partial vertical sectional view showing the conventional switch disclosed in Japanese Utility Model Application Publication No. 59-77742 in an open state.
図１こおいて、符号（りは第１の端子板、（２）は第１
の端子板（１）ｌこ取り付けられている１対の接触子の
内の一方の接触子である第１の接触子例えば固定接触子
、（６）は固定接触子（２）に対して接離する他方の接
触子である第２の接触子例えば可動接触子、（４）は可
動接触子（６）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＃（６）の上記開口部に
固着されている絶縁物から成るノズルであって、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’Ｈｆ６） ｊこ囲
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（６）が固定接触子（２）から開
離するときｌこ発生するアークで、（１１）は円筒状に
形成され、その一端面が外筒（６）の外表面ｌこ取り付
けられているシリンダ、（１２）は可動接融子（３）、
こ取り付けられ、シリンダ（１１）の内周面１こ摺接す
るピストン、（１３）はシリンダ（１２）と外＠（６）
の底面とｆこ囲まれて形成され、可動接触子（６）の矢
印方向への移動時ｔこ形成される負王室でである。In FIG.
The first contact (6), which is one of the pair of contacts attached to the terminal plate (1), for example, a fixed contact, is connected to the fixed contact (2). A second contact, such as a movable contact, is the other contact to be separated, (4) is a current collector that is in sliding contact with the movable contact (6), and (5) is a current collector (4).
) is attached to the second terminal plate, (6) is an outer cylinder whose one end is fixed to the first terminal plate (1) and has an opening at the other end, and (7) is the outer cylinder. A nozzle made of an insulator that is fixed to the opening of #(6), and has a through hole (7a) into which the movable contact (3) is inserted and slidably formed. . (8) is an annular magnet installed in the nozzle (7), (9) is an insulating arc-extinguishing gas storage chamber surrounded by the outside, (9a)
is a storage chamber opening through which insulating arc-extinguishing gas enters and exits the storage chamber (9);
(10) is an arc generated when the movable contact (6) separates from the fixed contact (2), and (11) is formed in a cylindrical shape, one end surface of which is outside the outer cylinder (6). The cylinder (12) is attached to the surface of the movable welder (3),
The piston (13) is attached to the cylinder (11) and makes sliding contact with the inner peripheral surface of the cylinder (11).
This is a negative chamber that is formed so as to be surrounded by the bottom surface of the contactor (6), and is formed when the movable contact (6) moves in the direction of the arrow.
次に動作について説明する。Next, the operation will be explained.
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）によっ
て矢印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（２） （３）間にア
ーク（１０）が発生する。When this switch is in the closed state, 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 contact (3) is driven in the direction of the arrow by a drive mechanism (not shown), the movable contact (3) separates from the fixed contact (2), and both contacts ( 2) An arc (10) occurs between (3).
一方、環状の磁石（８）は軸方向１こ磁化されて２つ、
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、回転アークとなって半径方間に引き延ば
されることにより、アーク（１０）はより多く絶縁消弧
ガスを加熱する。On the other hand, the annular magnet (8) is magnetized once in the axial direction and divided into two.
A magnetic flux (φ) including a radial component is generated at the storage chamber entrance (9a). Due to this magnetic flux (φ), the arc (10) receives a force in the circumferential direction, becomes a rotating arc, and is elongated in the radial direction, so that the arc (10) heats the insulating arc-extinguishing gas more.
このようにしてなされるアーク（１０）による絶縁消弧
ガスの加熱効果１こよって、貯留室（９）内のガス圧力
は上昇する。As a result of the heating effect 1 of the insulating arc-extinguishing gas caused by the arc (10), the gas pressure in the storage chamber (9) increases.
次にアーク発生後、電流がそのピーク時を過ぎて零にな
る過程で、アーク（１０）は昇圧した絶縁消弧ガスの吹
付け１こよって消弧に至らしめられる。Next, after the arc occurs, the arc (10) is extinguished by spraying 1 of the pressurized insulating arc-extinguishing gas while the current passes its peak and becomes zero.
なお、ピストン（１２）が可動接触子（３）と共にシリ
ンダ（１１）内を矢印方向に移動して、負圧室（１３）
内の圧力を負圧にすることにより、小電流しゃ断時ｌこ
あっても、絶縁消弧ガスの流れを大きくして、消弧を補
助している。In addition, the piston (12) moves in the direction of the arrow in the cylinder (11) together with the movable contactor (3), and the negative pressure chamber (13)
By making the internal pressure negative, even when a small current is interrupted, the flow of insulating arc extinguishing gas is increased to assist arc extinguishing.
従来の開閉器は、上記のように構成されており、従って
、軸方向に磁化されている磁石（８）１こよる貯留室口
（９ａ）部における磁束（φ）の内の半径方向成分は少
なく、その方向の磁力は弱いために、貯留室口（９ａ）
のアーク（１０）に働く周方向駆動力も小さく、従って
、貯留室口（９ａ） ｌこおける絶縁消弧ガスの加熱効
果も少ない。その結果、従来の開閉器にあっては、貯留
室（９）における絶縁消弧ガスの圧力上昇が少なく、従
って、アーク（１０）への絶縁消弧ガスの吹付力も弱く
、充分な消弧効果が得られないという問題点を有してい
る。The conventional switch is constructed as described above, and therefore, the radial component of the magnetic flux (φ) at the storage chamber opening (9a) due to the axially magnetized magnet (8) is Since the magnetic force in that direction is weak, the storage chamber entrance (9a)
The circumferential driving force acting on the arc (10) is also small, and therefore the heating effect of the insulating arc-extinguishing gas at the storage chamber opening (9a) is also small. As a result, in the conventional switch, the pressure rise of the insulating arc-extinguishing gas in the storage chamber (9) is small, and therefore the blowing force of the insulating arc-extinguishing gas to the arc (10) is also weak, resulting in a sufficient arc-extinguishing effect. The problem is that it cannot be obtained.
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、小電流しゃ断時においても、消弧能力の向
上した開閉器を得ることを目的とする。This invention was made to solve the above-mentioned problems, and an object thereof is to obtain a switch with improved arc extinguishing ability even when a small current is interrupted.
この発明に係る開閉器は、貯留室側端面が内径側にいく
に従って第１の接触子から遠ざかるように傾斜させて貯
留室側に末広がりになるような円錐状に形成さ゛れてい
る環状の若しくは環状に配した磁石を、ノズル内に貯留
室に近接させて設けているものである。The switch according to the present invention is an annular or annular switch which is formed in a conical shape such that the end face on the storage chamber side is inclined so as to move away from the first contact as it goes to the inner diameter side and widens toward the storage chamber side. A magnet arranged in the nozzle is provided in the nozzle in close proximity to the storage chamber.
この発明における内向きテーパ状の磁極形状を有する磁
石は、貯留室口で発生するアークに交差する磁束が強ま
り、この強まったアークに交差する磁束によってアーク
の周方向への駆動力が増加し、従って、アークの伸長度
が大きくなる。その結果、アークによる絶縁消弧ガスの
加熱効果が増大し、従って、貯留室内の絶縁消弧ガスの
圧力上昇度が高められ、その結果、絶縁消弧ガスのアー
クへの強い吹付けによって、充分な消弧効果を達成する
。In the magnet having an inwardly tapered magnetic pole shape in this invention, the magnetic flux that crosses the arc generated at the storage chamber entrance is strengthened, and the driving force in the circumferential direction of the arc is increased by this strengthened magnetic flux that crosses the arc. Therefore, the degree of elongation of the arc increases. As a result, the heating effect of the insulating arc-extinguishing gas by the arc is increased, and therefore the degree of pressure rise of the insulating arc-extinguishing gas in the storage chamber is increased. Achieve a good arc-extinguishing effect.
以下、この発明をその一実施例である開閉器の開離状態
を示す部分縦断面図を示した第１図に基づいて説明する
。なお、第２図に示した符号と同一の符号で示すものは
、第２図で示した従来の開閉器におけるものと同等のも
のである。Hereinafter, the present invention will be explained based on FIG. 1, which is a partial vertical cross-sectional view showing an open state of a switch according to an embodiment of the invention. Components indicated by the same symbols as those shown in FIG. 2 are equivalent to those in the conventional switch shown in FIG.
図において、ノズル（７）に設けられている軸方向１こ
磁化された環状の磁石（２１）は、その磁極形状が、そ
の内径側にいくｌこ従って固定接触子（２）から遠ざか
るようｌこ貯留室（９）側に末広がりの円錐形に形成さ
れているととも１こ、貯留室口（９ａ） Ｊこ近付けて
配設されている。In the figure, the annular magnet (21) provided in the nozzle (7) and magnetized once in the axial direction is arranged so that its magnetic pole shape moves away from the fixed contact (2) by a certain distance toward its inner diameter. It is formed into a conical shape that widens towards the end of the storage chamber (9), and is placed close to the storage chamber opening (9a).
また、ノズル（７）は、その貯留室口（９ａ）に面する
ノズル（７）の内面形状が磁石（２１）とほぼ同形のテ
ーパ状に形成されている。Further, the inner surface of the nozzle (7) facing the storage chamber opening (9a) is formed into a tapered shape that is substantially the same shape as the magnet (21).
この発明の実施例は、上記のように構成されているので
、貯留室口（９ａ） ＋こおける磁界は強化され、かつ
、貯留室口（９ａ）に形成される磁界は半径方向成分を
主体とする磁界分布となってアーク（１０）との交差磁
束が多くなる。従って、固定接触子（２）と可動接触子
（３）との間に発生する貯留室口（９ａ）近傍のアーク
（１０）との交差磁束が多くかつ強くなるために、アー
ク（１０）に働く周方向の駆動力は増加し、アーク（１
０）は回転しながら半径方向に引き延ばされるので、ア
ーク（１０）による絶縁消弧ガスの加熱効果も増大する
。従って、貯留室（９）内の絶縁消弧ガスのガス圧力は
上昇し、アーク（１０）への絶縁消弧ガスの吹付力も強
くなるので、消弧能力が充分に大きくなる。Since the embodiment of the present invention is configured as described above, the magnetic field at the storage chamber entrance (9a) is strengthened, and the magnetic field formed at the storage chamber entrance (9a) has a mainly radial component. The magnetic field distribution becomes as follows, and the amount of magnetic flux crossing with the arc (10) increases. Therefore, the cross magnetic flux with the arc (10) near the storage chamber opening (9a) generated between the fixed contact (2) and the movable contact (3) becomes large and strong. The driving force in the circumferential direction increases, and the arc (1
Since the arc (10) is stretched in the radial direction while rotating, the heating effect of the insulating arc-extinguishing gas by the arc (10) is also increased. Therefore, the gas pressure of the insulating arc-extinguishing gas in the storage chamber (9) increases, and the force of blowing the insulating arc-extinguishing gas onto the arc (10) also increases, so that the arc-extinguishing ability becomes sufficiently large.
なお、上記実施例では、磁石（２１）の上側をＮ玉、下
側をＳ極となるようｌこ構成して設けているが、その玉
性を反転して磁化させても良く、また、磁石を複数個、
組み合わせて環状に設けても良い。In the above embodiment, the upper side of the magnet (21) is configured to have an N pole and the lower side has an S pole, but the magnet (21) may be magnetized by reversing its bead nature. multiple magnets,
They may be combined and provided in a ring shape.
また、上記実施例では、ノズルの貯留室側端面を内向き
に傾斜させてテーパ状としたが、必ずしも必要ではない
が、このように傾斜させるならば、−層絶縁消弧ガスの
流れをよくして消弧能力をより一層向上させる効果を有
している。Further, in the above embodiment, the end surface of the nozzle on the side of the storage chamber is inclined inward to form a tapered shape, but although it is not necessary, if it is inclined in this way, the flow of the -layer insulation arc-extinguishing gas can be improved. This has the effect of further improving the arc extinguishing ability.
更に、磁石（２１）の磁極のテーパ角、および、ノズル
（７）の貯留室を凹むテーパ部のテーパ角はアークとの
交差°磁束を強めるように設ければ、どのようなテーパ
角でも良い。Further, the taper angle of the magnetic pole of the magnet (21) and the taper angle of the taper part recessing the storage chamber of the nozzle (7) may be any taper angle as long as it is set so as to strengthen the magnetic flux at the intersection with the arc. .
更に、磁石の材質としては、例えば、フェライト系、ア
ルニコ系、サマリウム系希土類およびネオジウム・鉄・
ボロン系磁石などがあるが、磁力の強い磁石であれば、
より一層消弧効果は大きい。Furthermore, the material of the magnet includes, for example, ferrite, alnico, samarium, rare earth, neodymium, iron, etc.
There are boron-based magnets, but if the magnet has strong magnetic force,
The arc extinguishing effect is even greater.
以上のように、この発明によれば、貯留室側端面が内向
きのテーパ状に形成した磁極形状を有する環状の若しく
は環状に配した磁石をノズル内に貯留室に近接して設け
ているので、貯留室口における半径方向の磁束が多く生
じてアークの駆動力を強め、これによって、消弧能力を
高めることのできる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, an annular or annularly arranged magnet having a magnetic pole shape with an inwardly tapered end face on the side of the storage chamber is provided in the nozzle close to the storage chamber. This has the effect that a large amount of radial magnetic flux is generated at the storage chamber mouth, thereby increasing the driving force of the arc, thereby making it possible to obtain a switch that can enhance the arc extinguishing ability.
第１図はこの発明の一実施例による開閉器の開離状態を
示す部分縦断面図、第２図は従来の開閉器の一例の開離
状態を示す部分縦断面図である。
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、（９）・・貯留室、（９ａ）
・・貯留室口、（１０）・・アーク、（２’）・・磁石
、（φ）・・磁束。
なお、各図中、同一符号は同一または相当部分を示す。
昂１図
↓
２ ： 第１１待触′＋（国足得勉乎） ９
ａ 貯留室口３ ・ 才２１１触＋（可Ｖ＋傍角曵
千） １０ ７−り６ タト′１％ｌ′１
２１
戊Ａ５７ ： ノス゛几
φ 、ｉａ 來９ 、
灯雪覚FIG. 1 is a partial vertical cross-sectional view showing an open state of a switch according to an embodiment of the present invention, and FIG. 2 is a partial vertical cross-sectional view showing an example of a conventional switch in an open state. In the figure, (2)...first contact (fixed contact),
(3)...Second contact (movable contact), (6)...
Outer cylinder, (7)...nozzle, (9)...storage chamber, (9a)
...Storage chamber entrance, (10)...Arc, (2')...Magnet, (φ)...Magnetic flux. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 1 ↓ 2: 11th waiting touch'+ (Kokusai Toku Study) 9
a Storage chamber entrance 3 ・ 211 touch + (possible V + side angle 1000) 10 7-ri 6 Tato'1%l'1
21
戊A57: Nosu゛几
φ,ia 9,
Toyukisaku
Claims (2)
て開閉動作をする第２の接触子、上記第１の接触子を収
納するとともに絶縁消弧ガスを貯留する貯留室を形成す
る外筒および、この外筒の上記第２の接触子側の端部に
設けられているノズルを有する開閉器において、貯留室
側端面が内径側にいくに従って第１の接触子から遠ざか
るように傾斜させて貯留室側に末広がりの円錐状に形成
されている環状の若しくは環状に配した磁石をノズル内
に貯留室に近接させて設けていることを特徴とする開閉
器。(1) A first contact, a second contact that opens and closes by moving toward and away from the first contact, and a storage chamber that houses the first contact and stores insulating arc-extinguishing gas. In the switch, the switch has an outer cylinder forming an outer cylinder and a nozzle provided at the end of the outer cylinder on the second contact side, in which the end face on the storage chamber side moves away from the first contact as it goes toward the inner diameter side. A switch characterized in that a ring-shaped or annularly arranged magnet is provided in a nozzle in close proximity to a storage chamber and is formed in a conical shape that is inclined as shown in FIG.
第１の接触子から遠ざかるように傾斜させて貯留室側に
末広がりの円錐状に形成されている特許請求の範囲第１
項記載の開閉器。(2) The end surface of the nozzle on the storage chamber side is formed into a conical shape that widens toward the storage chamber by being inclined so as to move away from the first contact toward the inner diameter side.
Switch mentioned in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16456286A JPS6321718A (en) | 1986-07-15 | 1986-07-15 | Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16456286A JPS6321718A (en) | 1986-07-15 | 1986-07-15 | Switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6321718A true JPS6321718A (en) | 1988-01-29 |
Family
ID=15795521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16456286A Pending JPS6321718A (en) | 1986-07-15 | 1986-07-15 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6321718A (en) |
-
1986
- 1986-07-15 JP JP16456286A patent/JPS6321718A/en active Pending
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