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JP2528247Y2 - Switch - Google Patents

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Publication number
JP2528247Y2
JP2528247Y2 JP1989120232U JP12023289U JP2528247Y2 JP 2528247 Y2 JP2528247 Y2 JP 2528247Y2 JP 1989120232 U JP1989120232 U JP 1989120232U JP 12023289 U JP12023289 U JP 12023289U JP 2528247 Y2 JP2528247 Y2 JP 2528247Y2
Authority
JP
Japan
Prior art keywords
pin
contact
movable
fixed
contacts
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 - Lifetime
Application number
JP1989120232U
Other languages
Japanese (ja)
Other versions
JPH0358819U (en
Inventor
義昭 小林
孝夫 三橋
貢 高橋
伸示 山県
士郎 村田
剛 今村
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 JP1989120232U priority Critical patent/JP2528247Y2/en
Publication of JPH0358819U publication Critical patent/JPH0358819U/ja
Application granted granted Critical
Publication of JP2528247Y2 publication Critical patent/JP2528247Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)

Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は開閉器、例えば2組の接触子対を備えた大
遮断容量用回路遮断器における機構部の改良に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a mechanism in a switch, for example, a circuit breaker for a large breaking capacity having two pairs of contacts.

〔従来の技術〕[Conventional technology]

第4図は例えば特公昭57-45007号公報に示された2組
の接触対を備えた従来の大遮断容量の回路遮断器を示す
斜視図、第5図は第4図の要部斜視図である。図におい
て、(1)は絶縁物で構成され内部に開閉機構部を収納
した筐体、(2)は一端に固定接点(3)を固着した電
源側の固定導体、(4)は一端に固定接点(5)を固着
した負荷側の固定導体である。上記固定接点(3),
(5)は筐体(1)の横方向に対向して配置されてい
る。(6)は電源側及び負荷側の夫々の固定導体(2)
と(4)とを電気的に絶縁しかつ夫々別個の消弧室を形
成するように設置された隔壁で、L字状に筐体(1)と
共に形成されている。(7),(8)は可動接触子で、
先端には夫々固定接点(3),(5)と対向する可動接
点(9),(10)を備えかつ他端は接続導体(11)によ
り橋絡されて電気的に直列になつており、本例では可動
接触子(7),(8)と一体に形成されている。(12)
は可動接触子(7),(8)の貫通穴(7a),(8a)に
貫挿したピン、(13)はピン(12)によつて枢着される
取付腕で、一端を角穴(14)によりクロスバー(15)に
固着されている。そしてクロスバー(15)が開閉機構部
(図示せず)によつて回動されると、取付腕(13)を介
して可動接触子(7),(8)が回動して固定接点
(3),(5)と可動接点(9),(10)の開閉動作を
行う。(16)はピン(12)とコイル巻部が係合したヒネ
リバネで、その一端は取付腕(13)に係止されかつ他端
は可動接触子(7),(8)に係止されて固定接点
(3),(5)と可動接点(9),(10)とが閉合した
時の接触圧力を制御する。また取付腕(13)には舌部
(13a)を有し、これは可動接触子(7),(8)がヒ
ネリバネ(16)によつて反時計方向へ回動するのを一定
角度に止めるためのストツパーの役目をなし、かつ可動
接点(9),(10)が開離した時に一定の距離を保つよ
うに形成されている。
FIG. 4 is a perspective view showing a conventional circuit breaker having a large breaking capacity provided with two pairs of contacts disclosed in, for example, Japanese Patent Publication No. 57-45007, and FIG. 5 is a perspective view of a main part of FIG. It is. In the drawing, (1) is a housing made of an insulating material and houses an opening / closing mechanism, (2) is a fixed conductor on the power supply side with a fixed contact (3) fixed to one end, and (4) is fixed to one end. A fixed conductor on the load side to which the contact (5) is fixed. The fixed contact (3),
(5) is arranged to face the housing (1) in the lateral direction. (6) is a fixed conductor on each of the power supply side and the load side (2)
And (4) are electrically insulated from each other and formed so as to form separate arc-extinguishing chambers, respectively, and are formed in an L-shape together with the housing (1). (7) and (8) are movable contacts.
Movable contacts (9) and (10) facing the fixed contacts (3) and (5) are provided at the tips, respectively, and the other ends are electrically connected in series by being bridged by the connection conductor (11). In this example, the movable contacts (7) and (8) are formed integrally. (12)
Is a pin inserted through the through holes (7a) and (8a) of the movable contacts (7) and (8), and (13) is a mounting arm pivotally connected by the pin (12). It is fixed to the crossbar (15) by (14). When the crossbar (15) is rotated by the opening / closing mechanism (not shown), the movable contacts (7) and (8) rotate via the mounting arm (13) to rotate the fixed contact ( 3) and (5) and the opening and closing operations of the movable contacts (9) and (10) are performed. (16) is a hinge spring in which the pin (12) and the coil winding portion are engaged, one end of which is locked by the mounting arm (13) and the other end of which is locked by the movable contacts (7) and (8). The contact pressure when the fixed contacts (3) and (5) and the movable contacts (9) and (10) are closed is controlled. The mounting arm (13) has a tongue (13a) which stops the movable contacts (7), (8) from rotating counterclockwise by the hinge spring (16) at a fixed angle. The movable contacts (9) and (10) are formed so as to keep a certain distance when the movable contacts (9) and (10) are opened.

次に動作について説明する。まず閉合時における電流
通路は、電源側固定導体(2)、固定接点(3)、可動
接点(9)、可動接触子(7)、接続導体(11)、可動
接触子(8)、可動接点(10)、固定接点(5)、負荷
側固定導体(4)のように流れる。このとき、ピン(1
2)に使用される材料は機械強度の必要性より炭素鋼や
その合金類が使用されて導電性を有するために、電流I
は接続導体(11)を流れる電流I1とピン(12)に流れる
電流I2とに分流するが、ピン(12)の抵抗値は接続導体
(11)に比較してかなり大きいため、通常の使用電流で
は分流するI2はI1に比較してわずかである。こうした閉
合状態から開閉機構部によつてクロスバー(15)が時計
方向へ回動すると、固定接点(3),(5)と可動接点
(9),(10)とは開離するが、この場合接点(3)と
(9)、接点(5)と(10)の間に発生する2本のアー
ク柱は、第5図の矢印で示すように電気的に直列にな
り、接触子対を1組しかもたない小遮断容量の回路遮断
器のように、1本のアーク柱のものに比べ接点間のアー
クの長さを2倍に引きのばしたことになり、アーク電圧
を2倍の速さで高めていくことになる。このことは電流
を速やかに抑制して電流を遮断する時間が早くなるた
め、回路遮断器の構成部品の損傷を低減させる。従つ
て、大遮断容量の回動遮断器として1極当り2組の接触
子対を備えた回路遮断器が広く使用されてきている。
Next, the operation will be described. First, the current paths at the time of closing are the power source side fixed conductor (2), fixed contact (3), movable contact (9), movable contact (7), connection conductor (11), movable contact (8), movable contact. (10), flowing like the fixed contact (5), the load side fixed conductor (4). At this time, pin (1
The material used in 2) is made of carbon steel or its alloys and has electrical conductivity due to the need for mechanical strength.
Is shunted to the current I 2 flowing in the current I 1 and the pin passing through the connection conductors (11) (12), the resistance value of the pin (12) is considerably larger than the connecting conductor (11), normal I 2 to divert the current used is very small compared to I 1. When the crossbar (15) rotates clockwise from the closed state by the opening / closing mechanism, the fixed contacts (3) and (5) and the movable contacts (9) and (10) are separated from each other. In this case, two arc columns generated between the contacts (3) and (9) and the contacts (5) and (10) are electrically connected in series as shown by arrows in FIG. Like a circuit breaker with a small breaking capacity, which has only one set, the length of the arc between the contacts is doubled as compared with that of a single arc column, and the arc voltage is doubled. It will increase with speed. This reduces damage to the components of the circuit breaker because the current is quickly suppressed and the time to interrupt the current is increased. Therefore, a circuit breaker having two contact pairs per pole has been widely used as a rotary breaker having a large breaking capacity.

〔考案が解決しようとする課題〕[Problems to be solved by the invention]

従来の回路遮断器は以上のように構成されているの
で、2組の可動接触子(7),(8)の間を流れる電流
が接続導体(11)だけでなく導電性を有するピン(12)
の方へも分流して流れるため、特に短絡事故等ではピン
(12)に分流する電流値は非常に大きく、流れる電流で
発生するジュール熱によりピン(12)が溶断し、可動接
触子(7),(8)の開閉動作を妨げ、接点の接触不能
となる問題点があつた。
Since the conventional circuit breaker is configured as described above, the current flowing between the two sets of movable contacts (7) and (8) is not only connected to the connection conductor (11) but also to the conductive pin (12). )
The current shunted to the pin (12) is very large especially in a short circuit accident or the like, and the pin (12) melts due to the Joule heat generated by the flowing current, and the movable contact (7) ), (8), which hinders the opening / closing operation and makes the contact impossible.

この考案は上記のような問題点を解消するためになさ
れたもので、ピンへの分流をなくして短絡時におけるピ
ンの溶断を防止することにより、可動接触子の開閉動作
の不良による接点の接触不能がなく信頼度の高い開閉器
を得ることを目的とする。
This invention was made in order to solve the above-mentioned problems, and by preventing shunting of the pin at the time of short circuit by eliminating shunting to the pin, contact of the contact due to poor opening / closing operation of the movable contact. An object of the present invention is to obtain a highly reliable switch without impossibility.

〔課題を解決するための手段〕[Means for solving the problem]

この考案に係る開閉器は、接続導体により電気的に直
列になる2組の可動接触子とこれを軸支するピンとが絶
縁物より形成された絶縁体を介して係合するように構成
したものである。
The switch according to the present invention is configured such that two sets of movable contacts that are electrically connected in series by a connecting conductor and a pin that supports the movable contacts engage via an insulator formed of an insulator. It is.

〔作用〕[Action]

この考案においては、絶縁体が可動接触子とこれを軸
支するピンとを電気的に絶縁するので、ピンに電流が分
流するのを防止する。
In the present invention, the insulator electrically insulates the movable contact from the pin supporting the movable contact, thereby preventing the current from being shunted to the pin.

〔実施例〕〔Example〕

以下、この考案の一実施例を第1図について説明す
る。第1図は第5図と同じ要部斜視図であり、前記従来
のものと同一または相当部分には同一符号を付して説明
を省略する。図において、(17)は可動接触子(7),
(8)の貫通穴(7a),(8a)に貫挿されかつ可動接触
子(7),(8)を回動自在に軸支するピンで、機械的
強度が得られるピアノ線等の炭素鋼やその合金類が使用
される。(18)はピン(17)の表面を覆う絶縁体であ
る。絶縁体(18)としては、例えば絶縁性の樹脂材料を
使用しピン(17)の表面に少なくとも貫通穴(7a),
(8a)と接触する面をこの樹脂の被膜でコーテイングし
たり、絶縁性の樹脂にピン(17)をインサートして成型
したり、あるいは絶縁性のサビ止め塗料等を塗布してな
るものである。
An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a perspective view of the same main parts as FIG. 5, and the same or corresponding parts as those of the conventional one are denoted by the same reference numerals and description thereof is omitted. In the figure, (17) is a movable contact (7),
A pin that is inserted through the through holes (7a) and (8a) of (8) and rotatably supports the movable contacts (7) and (8). Steel and its alloys are used. (18) is an insulator covering the surface of the pin (17). As the insulator (18), for example, an insulating resin material is used, and at least the through holes (7a),
The surface in contact with (8a) is coated with this resin film, molded by inserting pins (17) into insulating resin, or coated with insulating rust-proof paint. .

次に動作について説明する。開閉時の動作については
前述の従来例と同様であるが、閉合時における電流通路
は絶縁体(18)を備えたことによりピン(17)と可動接
触子(7),(8)の貫通穴(7a),(8a)との接触部
は完全に電気的に絶縁されるため従来のようにピン(1
7)へ電流は分流されない。従つて、短絡時に発生する
大電流は全て接続導体(11)へ流れてピン(17)へは流
れないため、ピン(17)の溶断に伴なう可動接触子
(7),(8)の開閉動作不良によつて接点の接触不能
を起こすこともなく、短絡時の信頼性が向上する。
Next, the operation will be described. The operation at the time of opening and closing is the same as that of the conventional example described above. The contact area with (7a) and (8a) is completely electrically insulated, so the pin (1
The current is not shunted to 7). Therefore, all the large current generated at the time of short circuit flows to the connection conductor (11) and does not flow to the pin (17), so that the movable contacts (7) and (8) associated with the fusing of the pin (17). The reliability in the event of a short circuit is improved without the contact being unable to be contacted due to a switching operation failure.

上記実施例では可動接触子(7),(8)の他端を接
続導体(11)で橋絡して略コ字形に一体成形したものを
示したが、接続導体を可撓銅撚線などで接続する別体構
造として電気的に直列になるようにしても良い。
In the above embodiment, the other ends of the movable contacts (7) and (8) are bridged by the connection conductor (11) to be integrally formed into a substantially U-shape. May be electrically connected in series as a separate structure.

第2図はこの考案の他の実施例を示すもので、可動接
触子(7),(8)の貫通穴(7a),(8a)に絶縁物よ
りなる絶縁体(19),(19)をそれぞれ固着し、この絶
縁体(19),(19)に設けた貫通穴(19a),(19a)に
それぞれピン(17)を貫挿して軸支したものである。
FIG. 2 shows another embodiment of the present invention, in which through holes (7a) and (8a) of movable contacts (7) and (8) have insulators (19) and (19) made of an insulator. Are fixed, and the pins (17) are respectively inserted into the through holes (19a) and (19a) provided in the insulators (19) and (19) to be pivotally supported.

第3図はこの考案のさらに異なる実施例を示すもの
で、ピン(17)を貫挿する貫通穴(20a)を有しかつ絶
縁物で形成された筒状の絶縁体(20)を、可動接触子
(7),(8)の貫通穴(7a),(8a)に貫挿させたも
のである。
FIG. 3 shows still another embodiment of the present invention, in which a cylindrical insulator (20) having a through hole (20a) through which a pin (17) is inserted and made of an insulator is movable. These are inserted through the through holes (7a) and (8a) of the contacts (7) and (8).

さらに機械的強度が得られる絶縁性の材料であれば、
ピン(17)全体を絶縁物で構成すれば同様な効果を奏す
ることは言うに及ばない。
If it is an insulating material that can obtain more mechanical strength,
It goes without saying that a similar effect can be obtained if the entire pin (17) is made of an insulating material.

なお、以上の説明では回路遮断器の場合について説明
したが、電磁開閉器等他の開閉装置であつてもよく、上
記実施例と同様の効果を奏する。
In the above description, the case of a circuit breaker has been described. However, another switching device such as an electromagnetic switch may be used, and the same effects as those of the above embodiment can be obtained.

〔考案の効果〕[Effect of the invention]

以上のように、この考案によれば絶縁体によりピンと
可動接触子とが電気的に絶縁され、短絡時の大電流がピ
ンに分流しないように構成したので、ピンの溶断が防止
され、従つて短絡後の可動接触子の開閉動作不良により
接点の接触不能が発生することもなく信頼度の高いもの
を安価に得られる効果がある。
As described above, according to the present invention, the pin and the movable contact are electrically insulated by the insulator, and the large current at the time of short circuit is configured not to be shunted to the pin, so that the fusing of the pin is prevented. There is an effect that a reliable contact can be obtained at a low cost without the contact failure of the contact due to the opening / closing operation failure of the movable contact after the short circuit.

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

第1図はこの考案の一実施例による回路遮断器の要部斜
視図、第2図及び第3図はこの考案の異なる二つの実施
例を示す要部斜視図、第4図は従来の回路遮断器を示す
斜視図、第5図は第4図の要部斜視図である。 図において、(2)は固定導体、(3)は固定接点、
(4)は固定導体、(5)は固定接点、(7),(8)
は可動接触子、(9),(10)は可動接点、(11)は接
続導体、(17)はピン、(18)は絶縁体を示す。 なお、図中同一符号は同一又は相当部分を示す。
FIG. 1 is a perspective view of a main part of a circuit breaker according to an embodiment of the present invention, FIGS. 2 and 3 are perspective views of main parts showing two different embodiments of the present invention, and FIG. 4 is a conventional circuit breaker. FIG. 5 is a perspective view showing a circuit breaker, and FIG. 5 is a perspective view of a main part of FIG. In the figure, (2) is a fixed conductor, (3) is a fixed contact,
(4) is a fixed conductor, (5) is a fixed contact, (7), (8)
Represents a movable contact, (9) and (10) represent movable contacts, (11) represents a connection conductor, (17) represents a pin, and (18) represents an insulator. In the drawings, the same reference numerals indicate the same or corresponding parts.

───────────────────────────────────────────────────── フロントページの続き (72)考案者 高橋 貢 兵庫県尼崎市塚口本町8丁目1番1号 三菱電機株式会社中央研究所内 (72)考案者 山県 伸示 広島県福山市緑町1番8号 三菱電機株 式会社福山製作所内 (72)考案者 村田 士郎 広島県福山市緑町1番8号 三菱電機株 式会社福山製作所内 (72)考案者 今村 剛 広島県福山市緑町1番8号 三菱電機株 式会社福山製作所内 (56)参考文献 特開 昭63−308820(JP,A) 実開 昭52−122351(JP,U) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mitsugu Takahashi 8-1-1, Tsukaguchi Honcho, Amagasaki City, Hyogo Prefecture Inside the Central Research Laboratory of Mitsubishi Electric Corporation (72) Inventor Shinji Yamagata 1-8 Midoricho, Fukuyama City, Hiroshima Mitsubishi Inside Electric Machinery Fukuyama Works (72) Inventor Shiro Murata 1-8 Midoricho, Fukuyama City, Hiroshima Prefecture Inside Mitsubishi Electric Corporation Fukuyama Works (72) Inventor Go Imamura 1-8 Midoricho, Fukuyama City, Hiroshima Mitsubishi Electric Corporation (56) References JP-A-63-308820 (JP, A) JP-A-52-122351 (JP, U)

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】先端に可動接点を有しかつ他端が接続導体
により橋絡されて電気的に直列になる2組の可動接触
子、前記可動接点と接離可能な固定接点を有する2組の
固定導体、および前記可動接触子を回動自在に軸支する
ピンを備え、前記可動接触子と前記ピンとが絶縁物より
形成される絶縁体を介して係合して電気的に絶縁される
ことを特徴とする開閉器。
1. Two sets of movable contacts having a movable contact at the tip and being electrically connected in series with the other end being bridged by a connecting conductor, and two sets having a fixed contact detachable from the movable contact. And a pin for rotatably supporting the movable contact. The movable contact and the pin are electrically insulated by engaging with each other via an insulator formed of an insulator. A switch characterized by that.
JP1989120232U 1989-10-13 1989-10-13 Switch Expired - Lifetime JP2528247Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989120232U JP2528247Y2 (en) 1989-10-13 1989-10-13 Switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989120232U JP2528247Y2 (en) 1989-10-13 1989-10-13 Switch

Publications (2)

Publication Number Publication Date
JPH0358819U JPH0358819U (en) 1991-06-10
JP2528247Y2 true JP2528247Y2 (en) 1997-03-05

Family

ID=31668317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989120232U Expired - Lifetime JP2528247Y2 (en) 1989-10-13 1989-10-13 Switch

Country Status (1)

Country Link
JP (1) JP2528247Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4687947B2 (en) * 2004-10-05 2011-05-25 敏明 菅原 Money sorting case and money sorting case

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122351U (en) * 1976-03-15 1977-09-17
JPS63308820A (en) * 1987-06-10 1988-12-16 Fuji Electric Co Ltd Contact device for circuit breaker

Also Published As

Publication number Publication date
JPH0358819U (en) 1991-06-10

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