JPS5864729A - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- JPS5864729A JPS5864729A JP16524581A JP16524581A JPS5864729A JP S5864729 A JPS5864729 A JP S5864729A JP 16524581 A JP16524581 A JP 16524581A JP 16524581 A JP16524581 A JP 16524581A JP S5864729 A JPS5864729 A JP S5864729A
- Authority
- JP
- Japan
- Prior art keywords
- conductive plate
- movable contact
- fixed
- circuit breaker
- 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
Links
Landscapes
- Breakers (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は回路しゃ断器に関するものであり、特に回路
に大きな短絡電流が流れたときに、引外し装置による動
体とは無関係に可動接触子導電板を電磁反発力により瞬
間的に開離させ、固定可動接触子間のアーク抵抗を増大
させることにより、電流を減少させて、しゃ断容量を増
大するようにした回路しゃ断器に関するものである。[Detailed Description of the Invention] This invention relates to a circuit breaker, and in particular, when a large short-circuit current flows in a circuit, the movable contact conductive plate is instantaneously moved by a tripping device regardless of a moving body by electromagnetic repulsion. This invention relates to a circuit breaker that reduces current and increases breaking capacity by increasing arc resistance between fixed movable contacts.
図はこの発明に係る回路しゃ断器の一実施例を示す部分
側断面図である。図において、モールドケース(1)は
回路しゃ断器の枠体を構成するものである。固定接触子
導電板(2)はモールドケース(1)に固定されており
、その一端部に固定接触子(3)が固着されている。可
動接触子(4)は固定接触子(3)に対向して可動接触
子導電板(5)の一端側(501)の先端部に固着され
ている。可動接触子導電板(5)は中央部が後述のクロ
スバ−(6)に固着された枢軸(7)を中心に回動可能
に装着され、その自由端の一端側(501)が固定接触
子導電板(2)に対し第1の平行部を形成し、その自由
端の他端側(502)が後述のヨーク■に対し第2の平
行部を形成している。クロスバ−(6)は後述のレバー
Q4の背面を摺動移動するものであり、その一端部は枢
軸(7)を介して可動接触子導電板(6)の中央部を回
動可能に支承している。The figure is a partial side sectional view showing an embodiment of the circuit breaker according to the present invention. In the figure, a molded case (1) constitutes the frame of the circuit breaker. A fixed contact conductive plate (2) is fixed to a molded case (1), and a fixed contact (3) is fixed to one end thereof. The movable contact (4) faces the fixed contact (3) and is fixed to the tip of one end (501) of the movable contact conductive plate (5). The movable contact conductive plate (5) has its center portion rotatably mounted on a pivot (7) fixed to a crossbar (6) (described later), and one free end (501) of the movable contact conductive plate (5) is attached to a fixed contact plate. A first parallel portion is formed with respect to the conductive plate (2), and the other free end side (502) forms a second parallel portion with respect to the yoke (2) to be described later. The crossbar (6) slides on the back surface of the lever Q4, which will be described later, and one end of the crossbar (6) rotatably supports the center of the movable contact conductive plate (6) via a pivot (7). ing.
圧縮ばね(8)は可動接触子導電板(5)とモールドケ
ース(1)の内面間に装着されたコイル状のばねで、可
動接触子導電板(5)に枢軸(7)を中心に反時計方向
の力を作用させて、可動接触子(4)を固定接触子(5
)に圧接させている。手動ハンドル(9)は固定枠(図
示せず)に設けられた枢軸aOを中心に回動可能に装着
されている。リンク(ロ)はその一端部は手動ノ1ンド
ル(9)に設けられたビン(2)に回動可能に結合され
、その他端部にはローラ(至)が取付けられており、ロ
ーラ(2)は図示の状態ではクロスバー(6)の斜面(
601)と後述のレバーa→の背面に当接している。レ
ノ(−α→は固定枠(図示せず)に設けられた枢軸(至
)に回動可能に装着され、その自由端は後述の第1の引
外しレバー(2)の一端部と保合関係にある。第1の引
外しレバーDIは固定枠(図示せず)に設けられた枢軸
(I′i)を中心に回動可能に装着されている。第2の
引外しレバー(至)はL字状に形成され、その一端側(
181)は第1の引外しレバー(至)の他端部に固着さ
れている。可動鉄心へ傷は第2の引外しレバー(至)の
L字状の一端側(181,)に摺動可能に貫通挿入され
ている。ヨークに)はコア状に形成され回路電流を流す
機能と磁束を通す機能とを有するもので、銅−鉄(Cu
−Fe)からなる複合材で構成されている。The compression spring (8) is a coiled spring installed between the movable contact conductive plate (5) and the inner surface of the molded case (1), and is a coiled spring that rotates around the pivot (7) on the movable contact conductive plate (5). A clockwise force is applied to move the movable contact (4) to the fixed contact (5).
). The manual handle (9) is rotatably mounted around a pivot aO provided on a fixed frame (not shown). One end of the link (B) is rotatably connected to a bottle (2) provided on the manual knob (9), and a roller (2) is attached to the other end. ) is the slope (
601) and the back surface of lever a→, which will be described later. Leno (-α→ is rotatably attached to a pivot (to) provided on a fixed frame (not shown), and its free end is engaged with one end of a first tripping lever (2) to be described later. The first trip lever DI is rotatably mounted around a pivot (I'i) provided on a fixed frame (not shown).The second trip lever DI is formed in an L-shape, with one end (
181) is fixed to the other end of the first tripping lever (to). The movable core is slidably inserted into one end (181,) of the L-shape of the second tripping lever (end). The yoke) is formed into a core shape and has the function of passing circuit current and magnetic flux, and is made of copper-iron (Cu
-Fe).
巻枠Qυはヨーク(ホ)のコ字状内に固定され、可動鉄
心0燵を摺動可能に貫通挿入する貫通孔(211)が設
けられている。電磁引外しコイル(財)は巻枠に)に巻
回されたものである。可とう導体に)は可動接触子導電
板(6)の第2平行部を形成する他端側(502)の先
端と、この他端側(5G2)と平行するヨーク(1)の
コア状の一辺(201)間に接続されている。可とう導
体(ハ)はヨーク(転)のコア状の他辺(202)と電
磁コイルに)とを接続するものである。熱動回外し素子
(2)はバイメタルで構成され、その一端部は外部導体
に接続される端子板(ホ)に固着され、その他端部は可
とう導体(財)によって電磁コイルに)に接続されてい
る。係合片に)は例えば熱動回外し素子四の他端部に螺
合するねじによって構成され、熱動回外し素子(2)の
わん曲時に第2の引外しレノし1のL字状の他端側(1
82)を押圧するものである。The winding frame Qυ is fixed within the U-shape of the yoke (E), and is provided with a through hole (211) through which the movable iron core is slidably inserted. An electromagnetic tripping coil is wound around a winding frame. The flexible conductor) has the tip of the other end (502) forming the second parallel part of the movable contact conductive plate (6) and the core-shaped part of the yoke (1) parallel to this other end (5G2). It is connected between one side (201). The flexible conductor (c) connects the other side (202) of the core shape of the yoke (to the electromagnetic coil). The thermal decoupling element (2) is made of bimetal, one end of which is fixed to a terminal plate (e) connected to the external conductor, and the other end connected to the electromagnetic coil by a flexible conductor. has been done. The engagement piece (on the engagement piece) is formed, for example, by a screw that is screwed into the other end of the thermal rotation element 4, and when the thermal rotation element (2) is bent, the L-shaped second tripping element 1 is The other end side (1
82).
次にこの考案の動作を説明する。今、図艮示す状態にお
いて、回路に小さな事故電流が流入した時は、電磁引外
しコイル(2)または熱動回外し素子に)が検知して、
第1の引外しレノ(−(2)を枢軸Oηを中心に時計方
向に回動させ、第1の引外しレノ(−6時とレバーα◆
との係合関係を外す。このためレノく一α◆はローラ(
至)の力により枢軸(ト)を中心に時計方向に回動する
。その結果、ローラ(至)はクロメノ(−(6)の斜面
(601)を回転し、レノイーQ41とクロメノく−(
6)の側面に落ち込み、クロス/(−(6)は圧縮コイ
ルばね(8)のばね力により開離方向に摺動移動する。Next, the operation of this invention will be explained. Now, in the state shown in the figure, when a small fault current flows into the circuit, the electromagnetic tripping coil (2) or the thermal tripping element) detects it.
Rotate the first tripping leno (-(2) clockwise around the axis Oη, then move the first tripping leno (-6 o'clock and lever
Remove the engagement relationship with. For this reason, Reno Kuichi α◆ is Laura (
It rotates clockwise around the axis (g) due to the force of (to). As a result, the roller (to) rotates on the slope (601) of Kuromeno (-(6)), and Renoi Q41 and Kuromeno-(
6), and the cross/(-(6) slides in the opening direction by the spring force of the compression coil spring (8).
このようにして可動接触子(4)は固定接触子(3)か
ら開離する、
次に回路しゃ断器に大きな事故電流が流入した場合には
、固定接触子導電板(2)と可動接触子導電板(6)の
一端側(501)とで形成される第1平行部と、可動接
触子導電板(5)の他端側(6G2)とヨーク(1)の
コア状の一辺(201)とで形成される第2平行部に固
定接触子(3)と可動接触子(4)間にアーク抵抗が形
成され、事故電流はこのアーク抵抗によって減流される
。In this way, the movable contact (4) is separated from the fixed contact (3). Next, when a large fault current flows into the circuit breaker, the fixed contact conductive plate (2) and the movable contact A first parallel portion formed by one end side (501) of the conductive plate (6), the other end side (6G2) of the movable contact conductive plate (5), and one core-shaped side (201) of the yoke (1). An arc resistance is formed between the fixed contact (3) and the movable contact (4) in the second parallel portion formed by the two, and the fault current is reduced by this arc resistance.
以上のようにこの発明によれば、短絡事故発生時の初期
電流による電磁反発力により可動接触子を瞬間的に開離
させ、この開離により発生したアーク抵抗によって短絡
電流のピーク点を大きく押えることができる。また回路
しゃ断器を設置する盤の導体サポート構造の簡略化、ア
ークガスの排出を少なくすることにより、盤スペースの
縮少ができる等の効果を有する。As described above, according to the present invention, the movable contact is instantaneously opened by the electromagnetic repulsion caused by the initial current when a short-circuit accident occurs, and the peak point of the short-circuit current is greatly suppressed by the arc resistance generated by this opening. be able to. Furthermore, by simplifying the conductor support structure of the panel on which the circuit breaker is installed and by reducing the discharge of arc gas, the panel space can be reduced.
図はこの発明に係る回路しゃ断器の一実施例を示す部分
断面側面図である。
図において、(2)は固定接触子導電板、(3)は固定
接触子、(4)は可動接触子、(5)は可動接触子導電
板、(601)は一端側、(502)は他端側、(6)
はクロスバ−1(7)は枢軸、(8)は圧縮ばね、(9
)は手動ハンドル、Ql)は枢軸、(2)はリンク、(
2)はビン、(至)はローラ、α◆はレバー、(ロ)は
枢軸、(至)は第1の引外しレバー、Qカは枢軸、(至
)は第2の引外しレバー、α脅は可動鉄心、(転)はコ
字状のヨーク、(ffiol)はコ字状の一辺、(20
g)はコ字状の他辺、(2)は巻枠、に)は電磁用外し
コイル、(2)贋は可とう導体、に)は熱動用外し素子
である。
代理人 弁理士 葛野信−The figure is a partially sectional side view showing an embodiment of a circuit breaker according to the present invention. In the figure, (2) is a fixed contact conductive plate, (3) is a fixed contact, (4) is a movable contact, (5) is a movable contact conductive plate, (601) is one end side, (502) is Other end side, (6)
is the crossbar 1 (7) is the pivot, (8) is the compression spring, (9
) is a manual handle, Ql) is a pivot, (2) is a link, (
2) is the bottle, (to) is the roller, α◆ is the lever, (b) is the pivot, (to) is the first trip lever, Q is the pivot, (to) is the second trip lever, α The arrow is a movable iron core, (Ten) is a U-shaped yoke, (ffiol) is one side of a U-shape, (20
g) is the other side of the U-shape, (2) is the winding frame, (2) is the electromagnetic disconnection coil, (2) is the fake is a flexible conductor, and (2) is the thermal disconnection element. Agent Patent Attorney Makoto Kazuno
Claims (2)
子、第1の平行反撓導体を構成するように前つ中央部に
開閉機構部が回動可能に連結された可動接触子導電板、
及び前記可動接触子導電板の他端側に接続された一辺が
前記他端側に平行して第2の平行反撓導体を構成するよ
う設置されたコ字状のヨークと、前記ヨーク内に施され
前記ヨークに接続された電磁引外しコイルと、前記電磁
引外しコイルの励磁時に吸引され前記開閉機構部を駆動
する可動鉄心とからなる電磁引外し装置を備えたことを
特徴とする回路しゃ断器。(1) Fixed contact A fixed contact fixed to one end of the conductive plate, and a movable contact with an opening/closing mechanism rotatably connected to the front center so as to constitute a first parallel reflective conductor. conductive plate,
and a U-shaped yoke installed so that one side connected to the other end of the movable contact conductive plate is parallel to the other end to constitute a second parallel reflective conductor; A circuit breaker comprising an electromagnetic tripping device comprising an electromagnetic tripping coil provided and connected to the yoke, and a movable iron core that is attracted when the electromagnetic tripping coil is energized and drives the opening/closing mechanism section. vessel.
イルばねが装着され、前記圧縮ばねのばね力によって可
動接触子は固定接触子に圧接されて0る特許請求の範囲
第(1)項記載の回路しゃ断器。(2) A compression coil spring is installed between the other end of the movable contact conductive plate and the fixed object, and the movable contact is pressed against the fixed contact by the spring force of the compression spring. The circuit breaker described in (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16524581A JPS5864729A (en) | 1981-10-14 | 1981-10-14 | Circuit breaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16524581A JPS5864729A (en) | 1981-10-14 | 1981-10-14 | Circuit breaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5864729A true JPS5864729A (en) | 1983-04-18 |
Family
ID=15808628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16524581A Pending JPS5864729A (en) | 1981-10-14 | 1981-10-14 | Circuit breaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5864729A (en) |
-
1981
- 1981-10-14 JP JP16524581A patent/JPS5864729A/en active Pending
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