JPH0747780Y2 - Circuit breaker - Google Patents

Circuit breaker

Info

Publication number
JPH0747780Y2
JPH0747780Y2 JP1987075097U JP7509787U JPH0747780Y2 JP H0747780 Y2 JPH0747780 Y2 JP H0747780Y2 JP 1987075097 U JP1987075097 U JP 1987075097U JP 7509787 U JP7509787 U JP 7509787U JP H0747780 Y2 JPH0747780 Y2 JP H0747780Y2
Authority
JP
Japan
Prior art keywords
latch lever
trip
cradle
trip bar
movable contact
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
JP1987075097U
Other languages
Japanese (ja)
Other versions
JPS63182448U (en
Inventor
晴久 戸田
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 JP1987075097U priority Critical patent/JPH0747780Y2/en
Priority to KR1019880004066A priority patent/KR880014610A/en
Priority to DE3851465T priority patent/DE3851465T2/en
Priority to ZA883472A priority patent/ZA883472B/en
Priority to EP88107876A priority patent/EP0292841B1/en
Priority to US07/195,637 priority patent/US4888570A/en
Publication of JPS63182448U publication Critical patent/JPS63182448U/ja
Priority to KR2019910009197U priority patent/KR910006033Y1/en
Application granted granted Critical
Publication of JPH0747780Y2 publication Critical patent/JPH0747780Y2/en
Priority to HK98105843A priority patent/HK1006889A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 〔産業上の利用分野〕 この考案は回路しゃ断器に関し、特に自動引きはずし動
作をクレドルに伝えるトリツプリレー機構の改良に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a circuit breaker, and more particularly to improvement of a trip relay mechanism for transmitting an automatic trip operation to a cradle.

〔従来の技術〕[Conventional technology]

従来のこの種の回路しゃ断器を第7図乃至第12図につい
て説明する。第7図は正面図、第8図は第7図の線VIII
−VIIIの断面図、第9図はオフ状態を示す第8図と同じ
図、第10図はトリツプ状態を示す第8図と同じ図、第11
図はオン、オフ時のトリツプリレー機構の拡大図、第12
図はトリツプ瞬時のトリップリレー機構の拡大図であ
る。図において、(1)はしゃ断器ケースで、ベース
(1a)とカバー(1b)とで構成される。(2)はベース
(1a)に固定した電源側の固定導体、(3)は固定導体
に(2)に固着した固定接点、(4)は自動引きはずし
装置で、図示しないが例えば熱動電磁式あるいは電子式
の機構が配置されている。(5)は自動引きはずし装置
(4)に接続した負荷側の固定導体、(6)は可動接
点、(7)は可動接点(6)を固着した可動接触子、
(8)は可動接触子(7)を接続導体(9)を介して自
動引きはずし装置(4)に接続するための可撓導体、
(10)は可動接触子(7)を保持するコンタクトアーム
で、後記する開閉操作機構が連繋される第1のコンタク
トアーム(10a)と可動接触子(7)が第1のピン(1
1)により回転可能に支持される第2のコンタクトアー
ム(10b)とに分割形成されている。(12)はコンタク
トアーム(10)の支軸で、第1のコンタクトアーム(10
a)と第2のコンタクトアーム(10b)とがそれぞれ回転
可能に支持されている。(13)は各極の第1のコンタク
トアーム(10a)を連結するクロスバー、(14)は第1
のコンタクトアーム(10a)に設けられて開閉方向に延
びるガイド孔、(15)は第2のコンタクトアーム(10
b)に設けた長孔で、ガイド孔(14)と交差する方向に
延びている。(16)はガイド孔(14)と長孔(15)とに
跨がつて係合する第2のピン、(17)は第1のピン(1
1)と第2のピン(16)との間に設けた引きばねで、第
2のピン(16)を付勢する。(18)は可動接触子(7)
と第2のコンタクトアーム(10b)との間に設けた接圧
ばね、(19)はしゃ断器の操作ハンドル、(20)はしゃ
断器の開閉操作機構で、クレドル(20a)と上部リンク
(20b)と下部リンク(20c)などとにより構成される。
(21)はクレドル(20a)に設けたストッパーピン、(2
2)は下部リンク(20c)を第1のコンタクトアーム(10
a)に連繋するための連結ピン、(23)はクレドル(20
a)と係止部(23a)により係合してクレドル(20a)の
位置決めをするカケガネ、(24)はカケガネ(23)の回
転中心軸、(25)はカケガネ(23)とローラ(25a)に
より係合してカケガネ(23)がクレドル(20a)により
回転せしめられないように止めるラツチレバー、(26)
はラツチレバー(25)の回転中心軸、(27)はラツチレ
バー(25)と係止片(27a)により係合してラツチレバ
ー(25)がカケガネ(23)により回転せしめられないよ
うに止めるトリツプバー、(28)はトリツプバー(27)
の回転中心軸、(29)は回転中心軸(24)に挿着したひ
ねりばねで、カケガネ(23)をクレドル(20a)にまた
ラツチレバー(25)をカケガネ(23)にそれぞれ係合す
る方向に付勢している。(30)はトリツプバー(27)を
ラツチレバー(25)に係合する方向に付勢する引きば
ね、(31)は自動引きはずし装置(4)のトリツプロッ
ドで、トリツプ時に動作してトリツプバー(27)を引き
ばね(30)に抗して回転せしめる。
A conventional circuit breaker of this type will be described with reference to FIGS. FIG. 7 is a front view, and FIG. 8 is a line VIII in FIG.
-VIII sectional view, FIG. 9 is the same view as FIG. 8 showing the off state, FIG. 10 is the same view as FIG. 8 showing the trip state, FIG.
The figure shows an enlarged view of the trip relay mechanism when turned on and off.
The figure is an enlarged view of the trip instantaneous trip relay mechanism. In the figure, (1) is a breaker case, which is composed of a base (1a) and a cover (1b). (2) is a fixed conductor on the power source side fixed to the base (1a), (3) is a fixed contact fixed to the fixed conductor on (2), and (4) is an automatic tripping device, which is not shown, for example, a thermal electromagnetic A mechanical or electronic mechanism is arranged. (5) is a fixed conductor on the load side connected to the automatic trip device (4), (6) is a movable contact, (7) is a movable contactor to which the movable contact (6) is fixed,
(8) is a flexible conductor for connecting the movable contactor (7) to the automatic tripping device (4) via the connecting conductor (9),
Reference numeral (10) is a contact arm that holds the movable contactor (7), and the movable contactor (7) and the first contact arm (10a) to which an opening / closing operation mechanism described later is linked are the first pin (1).
It is divided into a second contact arm (10b) rotatably supported by 1). (12) is a support shaft of the contact arm (10), and the first contact arm (10
a) and the second contact arm (10b) are rotatably supported. (13) is a crossbar that connects the first contact arm (10a) of each pole, and (14) is the first
Of the contact arm (10a) of the second contact arm (10a) extending in the opening / closing direction, and (15) of the second contact arm (10).
The long hole provided in b) extends in the direction intersecting with the guide hole (14). (16) is a second pin that straddles and engages with the guide hole (14) and the elongated hole (15), and (17) is the first pin (1
The second pin (16) is biased by a pulling spring provided between 1) and the second pin (16). (18) is a movable contactor (7)
And a second contact arm (10b) between the contact pressure spring, (19) an operation handle of the circuit breaker, (20) an opening / closing operation mechanism of the circuit breaker, and the cradle (20a) and the upper link (20b). ) And a lower link (20c).
(21) is a stopper pin provided on the cradle (20a), (2
2) the lower link (20c) to the first contact arm (10
Connecting pin to connect to a), (23) is cradle (20
(24) is the center axis of rotation of the rake (23), (25) is the rake (23) and the roller (25a). A latch lever that engages with and stops the blade (23) from being rotated by the cradle (20a), (26)
Is a central axis of rotation of the latch lever (25), (27) is a trip bar that engages with the latch lever (25) by the locking piece (27a) and stops the latch lever (25) from being rotated by the rake (23), ( 28) is the trip bar (27)
The central axis of rotation is (29), and the torsion spring inserted in the central axis of rotation (24) is in the direction of engaging the blade (23) with the cradle (20a) and the latch lever (25) with the blade (23). I am biased. (30) is a pulling spring that biases the trip bar (27) in a direction to engage with the latch lever (25), and (31) is a trip rod of the automatic trip device (4), which operates during tripping and trips the trip bar (27). Rotate against the tension spring (30).

次に動作について説明する。第7図、第8図、第11図に
示すオン状態では電源側固定導体(2)→固定接点
(3)→可動接点(6)→可動接触子(7)→可撓導体
(8)→接続導体(9)→自動引きはずし装置(4)→
負荷側固定導体(5)の方向に電流が流れる。操作ハン
ドル(19)をオフ操作(第8図の矢印(32)の方向)す
ると、開閉操作機構(20)によりコンタクトアーム(1
0)が持ち上げられて可動接触子(7)と共に可動接点
(6)が第9図に示すように固定接点(3)より開離す
る。このとき、引きばね(17)により第2のピン(16)
がガイド孔(14)の凹部(14a)に嵌まつているので、
第2のコンタクトアーム(10b)は第1のコンタクトア
ーム(10a)と一体となつて開閉操作機構(20)により
持ち上げられ、支軸(12)を支点としてストッパーピン
(21)に衝突して止まる。第8図のオン状態、第9図の
オフ状態では、自動引きはずし装置(4)のトリツプロ
ッド(31)が動作しないので、トリツプリレー機構は第
11図の状態を維持しクレドル(20a)は固定されてい
る。
Next, the operation will be described. In the ON state shown in FIGS. 7, 8, and 11, the power source side fixed conductor (2) → fixed contact (3) → movable contact (6) → movable contactor (7) → flexible conductor (8) → Connection conductor (9) → Automatic trip device (4) →
A current flows in the direction of the load side fixed conductor (5). When the operation handle (19) is turned off (in the direction of the arrow (32) in FIG. 8), the opening / closing operation mechanism (20) causes the contact arm (1
0) is lifted and the movable contact (6) is separated from the fixed contact (3) as shown in FIG. 9 together with the movable contact (7). At this time, the pulling spring (17) causes the second pin (16) to move.
Fits into the recess (14a) of the guide hole (14),
The second contact arm (10b) is integrated with the first contact arm (10a) and lifted by the opening / closing operation mechanism (20), and stops by colliding with the stopper pin (21) with the support shaft (12) as a fulcrum. . In the ON state of FIG. 8 and the OFF state of FIG. 9, the trip rod mechanism (4) of the automatic trip device (4) does not operate.
The state of Fig. 11 is maintained and the cradle (20a) is fixed.

次に、第7図、第8図、第11図に示すオン状態において
過電流が流れると、自動引きはずし装置(4)が作動し
てトリツプロッド(31)が動作するので、第12図に示す
ようにトリツプバー(27)が引きばね(30)に抗して時
計方向に回転せしめられて係止片(27a)がラツチレバ
ー(25)から外れると、ラツチレバー(25)が時計方向
に回転可能となつてクレドル(20a)のはね上げ力によ
つてカケガネ(23)がひねりばね(29)に抗して時計方
向に回転せしめられ、この時ラツチレバー(25)もカケ
ガネ(23)によついてひねりばね(29)に抗して時計方
向に回転せしめられて、瞬間的の第12図の状態となる。
このクレドル(20a)の回転により開閉操作機構(20)
が動作するので、コンタクトアーム(10)が持ち上げら
れて第10図に示すように可動接点(6)が開離し、過負
荷電流をしゃ断する。いわゆるトリツプ状態となる。こ
のときも第9図のオフ状態と同様に引きばね(17)によ
り第2のピン(16)がガイド孔(14)の凹部(14a)に
嵌まつているので、第2のコンタクトアーム(10b)は
第1のコンタクトアーム(10a)と一体となつて開閉操
作機構(20)により持ち上げられ、支軸(12)を支点と
してストッパーピン(21)に衝突して止まる。
Next, when an overcurrent flows in the ON state shown in FIGS. 7, 8 and 11, the automatic tripping device (4) operates and the trip rod (31) operates, so that it is shown in FIG. When the trip bar (27) is rotated clockwise against the tension spring (30) and the locking piece (27a) is disengaged from the latch lever (25), the latch lever (25) can rotate clockwise. The flip-up force of the cradle (20a) causes the blade (23) to rotate clockwise against the torsion spring (29), and at this time, the latch lever (25) also attaches to the blade (23) and rotates the torsion spring (29). ), It is rotated clockwise to the state shown in FIG.
Opening and closing operation mechanism (20) by rotating this cradle (20a)
Is operated, the contact arm (10) is lifted, the movable contact (6) is opened as shown in FIG. 10, and the overload current is cut off. This is the so-called trip state. Also at this time, the second pin (16) is fitted in the recess (14a) of the guide hole (14) by the pulling spring (17) as in the OFF state of FIG. ) Is lifted by the opening / closing operation mechanism (20) integrally with the first contact arm (10a), and stops by colliding with the stopper pin (21) with the support shaft (12) as a fulcrum.

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

この種の回路しゃ断器では、トリツプバー(27)の引き
はずしモーメントを小さくして、トリツプロッド(31)
のクレドル(20a)を外す力を小さくするためには、カ
ケガネ(23)の両作用点の距離つまり回転中心軸(24)
から係止部(23a)までの距離および回転中心軸(24)
からローラ係合部までの距離、およびラツチレバー(2
5)の両作用点の距離つまり回転中心軸(26)からロー
ラ(25a)までの距離および回転中心軸(26)から係止
片係合部までの距離、が必要となる。
In this type of circuit breaker, the tripping moment of the trip bar (27) is reduced to reduce the trip rod (31).
In order to reduce the force to remove the cradle (20a), the distance between the two action points of the scraper (23), that is, the rotation center axis (24)
To locking part (23a) and rotation center axis (24)
To the roller engagement part, and the latch lever (2
The distance between both action points of 5), that is, the distance from the rotation center axis (26) to the roller (25a) and the distance from the rotation center axis (26) to the engaging piece engaging portion are required.

ところが、上記した従来の回路しゃ断器では、カケガネ
(23)の両作用点の距離およびラツチレバー(25)の両
作用点の距離を保持するために、しゃ断器の電源負荷方
向にクレドル(20a)からカケガネ(23)、ラツチレバ
ー(25)、トリツプバー(27)の順序に並置していたの
で、電源負荷方向にしゃ断器寸法が長くなるという問題
点があつた。
However, in the above-mentioned conventional circuit breaker, in order to maintain the distance between the two action points of the scraper (23) and the two action points of the latch lever (25), the cradle (20a) is placed in the power load direction of the breaker. Since the scraper (23), the latch lever (25), and the trip bar (27) are arranged side by side in this order, there is a problem that the breaker dimension becomes long in the power supply load direction.

この考案はかかる問題点を解決するためになされたもの
で、しゃ断器の電源負荷方向においてトリツプバーをカ
ケガネとラツチレバーとの間の中間でかつ上側に配置す
ることにより、電源負荷方向のしゃ断器寸法が短かくな
り、小形化が図れる回路しゃ断器を得ることを目的とす
る。
The present invention has been made to solve such a problem.By disposing the trip bar in the power load direction of the circuit breaker in the middle and between the scraper and the latch lever, the breaker size in the power load direction can be reduced. The purpose is to obtain a circuit breaker that is short and can be miniaturized.

〔問題点を課題を解決するための手段〕[Means to solve problems]

この考案に係る回路しゃ断器は、しゃ断器の電源負荷方
向においてトリツプバーの回転中心をカケガネおよびラ
ツチレバーの両回転中心間に位置させて前記トリツプバ
ーを前記カケガネとラツチレバーとの間の中間でかつ上
側に配置したものである。
In the circuit breaker according to the present invention, the trip bar is arranged so that the center of rotation of the trip bar is located between both the centers of rotation of the scraper and the latch lever in the power source load direction of the breaker, and the trip bar is arranged at an intermediate position between the scraper and the latch lever and at the upper side. It was done.

〔作用〕[Action]

この考案において、しゃ断器の電源負荷方向においてト
リツプバーをカケガネとラツチレバーとの間の中間でか
つ上側に配置したので、電源負荷方向にしゃ断器寸法が
短かくなる。
In the present invention, since the trip bar is arranged in the middle and between the scraper and the latch lever in the power load direction of the breaker, the breaker size becomes short in the power load direction.

〔考案の実施例〕[Example of device]

以下、この考案の一実施例を第1図乃至第6図について
説明する。第1図はトリツプリレー機構の斜視図、第2
図はトリツプリレー機構のオン、オフ状態図、第3図は
トリツプリレー機構のトリツプ瞬時を示す図、第4図は
カケガネの斜視図、第5図はラツチレバーの斜視図、第
6図トリツプバーの斜視図であり、前記従来のものと同
一または相当部材には同一符号を付して説明を省略す
る。図において(33)はベース(1a)に固定したフレー
ムで、両側板(33a),(33a)を有している。(24A)
は両側板(33a),(33a)に架設した回転中心軸、(23
A)は平面状のカケガネで回転中心軸(24A)が嵌まる
凹部(23b),(23b)と一方のアーム先端に形成された
ローラ係合部(23c)とを有している。(25A)は二叉状
のラツチレバーで、ローラ(25a)を支持する長孔(25
b)および切欠き(25c)と係止片(27a)が係合する係
止片係合部(25d)とバネ掛け片(25e)とを有してい
る。(26A)は回転中心軸で、ラツチレバー(25A)を側
板(33a)に回転可能に支持する。(28A)は両側板(33
a),(33a)に架設した回転中心軸、(27A)は平面
状のトリツプバーで、回転中心軸(28A)が通る孔(27
b),(27b)とバネ掛け片(27c)とトリツプロツド(3
1)が当接するトツド当接部(27d)とを有している。
(34)はダブルトーシヨンバネで、リング部(34a)に
より回転中心軸(24A)に挿着され、かつバネ折返部(3
4b)によりカケガネ(23A)をクレドル(20a)に係合す
る反時計方向に付勢し、バネ一方端(34c)によりラツ
チレバー(25A)をカケガネ(23A)に係合する反時計方
向に付勢し、バネ他方端(34d)によりトリツプバー(2
7A)をラツチレバー(25A)に係合する反時計方向に付
勢している。(35)はラツチレバー(25A)のストッパ
ーである。
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view of a tripule mechanism, and FIG.
The figure shows the on / off state of the trip relay mechanism, FIG. 3 shows the trip instant of the trip relay mechanism, FIG. 4 is a perspective view of a rake, FIG. 5 is a perspective view of a latch lever, and FIG. 6 is a perspective view of a trip bar. Therefore, the same or corresponding members as those of the above-described conventional device are designated by the same reference numerals and the description thereof will be omitted. In the figure, (33) is a frame fixed to the base (1a) and has both side plates (33a) and (33a). (24A)
Is the central axis of rotation erected on both side plates (33a) and (33a),
Reference numeral A) is a flat-shaped edge and has recesses (23b) and (23b) into which the rotation center shaft (24A) fits, and a roller engaging portion (23c) formed at the tip of one arm. (25A) is a fork-shaped latch lever that has a long hole (25A) that supports the roller (25a).
b) and a notch (25c), a locking piece engaging portion (25d) with which the locking piece (27a) is engaged, and a spring hooking piece (25e). (26A) is a central axis of rotation, and rotatably supports the latch lever (25A) on the side plate (33a). (28A) is both side plates (33
The rotation center shafts erected on a) and (33a), (27A) is a flat trip bar, and the hole (27A) through which the rotation center shaft (28A) passes.
b), (27b), spring hook (27c), and trituprod (3
1) is in contact with the toddle contact portion (27d).
(34) is a double torsion spring, which is inserted into the rotation center shaft (24A) by the ring portion (34a), and which has a spring folding portion (3
4b) biases the lacer (23A) counterclockwise to engage the cradle (20a), and the spring one end (34c) biases the latch lever (25A) counterclockwise to engage the lacer (23A). Then, the trip bar (2
7A) is urged counterclockwise to engage the latch lever (25A). (35) is a stopper for the latch lever (25A).

次に動作を説明する。第1図および第2図に示すように
トリツプロツド(31)が動作しないオン、オフ状態で
は、カケガネ(23A)とラツチレバー(25A)とトリツプ
バー(27A)とがダブルトーシヨンバネ(34)により付
勢されて第2図の状態を維持するので、クレドル(20
a)はカケガネ(23A)により保持される。そして、第3
図に示すようにトリツプロッド(31)が動作するトリツ
プ瞬時の状態では、トリツプバー(27A)がダブルトー
シヨンバネ(34)に抗して時計方向に回転せしめられて
係止片(27a)が係止片係合部(25d)から外れると、ラ
ツチレバー(25A)が時計方向に回転可能となつてクレ
ドル(20a)のはね上げ力(36)によつてカケガネ(23
A)がダブルトーシヨンバネ(34)に抗して時計方向に
回転せしめられ、この時ラツチレバー(25A)もカケガ
ネ(23A)によつてダブルトーシヨンバネ(34)に抗し
て時計方向に回転せしめられて、瞬時的に第3図の状態
となる。すぐさまトリツプロッド(31)が元に戻ると、
カケガネ(23A)とラツチレバー(25A)とトリツプバー
(27A)とがダブルトーシヨンバネ(34)によつて第2
図の状態に復帰する。その後、リセツト動作によつてク
レドル(20)はカケガネ(23A)に「パチン」と係合さ
れる。
Next, the operation will be described. As shown in FIGS. 1 and 2, when the tripod (31) is not in the on / off state, the blade (23A), the latch lever (25A) and the trip bar (27A) are urged by the double torsion spring (34). The cradle (20
The a) is retained by the bat (23A). And the third
As shown in the figure, the trip bar (27A) is rotated clockwise against the double torsion spring (34) when the trip rod (31) is in an instantaneous trip state, and the locking piece (27a) is locked. When it is disengaged from the one-side engaging part (25d), the latch lever (25A) can rotate in the clockwise direction, and the splashing force (36) of the cradle (20a) allows the ratchet lever (25A) to rotate.
A) is rotated clockwise against the double torsion spring (34), and at this time, the latch lever (25A) is also rotated clockwise against the double torsion spring (34) by the blade (23A). As a result, the state shown in FIG. 3 is instantaneously obtained. Immediately after the trip rod (31) returns to its original position,
The blade (23A), the latch lever (25A), and the trip bar (27A) are connected to each other by the double torsion spring (34).
Return to the state shown in the figure. Then, the reset operation causes the cradle (20) to be engaged with the snapper (23A) in a "snap".

第2図に示すように、カケガネ(23A)の両作用点の距
離つまり回転中心軸(24A)から係止部(23a)までの距
離および回転中心軸(24A)からローラ係合部(23c)ま
での距離、およびラツチレバー(25A)の両作用点の距
離つまり回転中心軸(26A)からローラ(25a)までの距
離および回転中心軸(26A)から係止片係合部(25d)ま
での距離は、従来のものと同様に確保できるので、トリ
ツプロード(31)のクレドル(20a)を外す力を小さく
することができる。
As shown in FIG. 2, the distance between the two action points of the scraper (23A), that is, the distance from the rotation center axis (24A) to the locking portion (23a) and the rotation center axis (24A) to the roller engagement portion (23c). And the distance between both action points of the latch lever (25A), that is, the distance from the rotation center axis (26A) to the roller (25a) and the distance from the rotation center axis (26A) to the locking piece engagement part (25d) Can be secured in the same manner as the conventional one, so that the force for removing the cradle (20a) of the trip spread (31) can be reduced.

以上のように、しゃ断器の電源負荷方向においてトリツ
プバー(27A)の回転中心をカケガネ(23A)およびラツ
チレバー(25A)の両回転中心間に位置させてトトリツ
プバー(27A)をカケガネ(23A)とラツチレバー(25
A)との間の中間でかつ上側に配置しておくと電源負荷
方向にしゃ断器寸法が短かくなる。なお、第1図乃至第
3図において図示省略しているが、トリツプバー(27
A)の上部には第6図に示すような各極に貫通する棒状
のバー部分(27B)がネジ(27C)により固定されるもの
である。
As described above, the trip bar (27A) is positioned so that the center of rotation of the trip bar (27A) is located between the center of rotation of the scraper (23A) and that of the latch lever (25A) in the power load direction of the circuit breaker. twenty five
If it is placed in the middle of A) and on the upper side, the breaker size becomes short in the power load direction. Although not shown in FIGS. 1 to 3, the trip bar (27
A bar-shaped bar portion (27B) penetrating each pole as shown in FIG. 6 is fixed to the upper part of (A) by a screw (27C).

〔考案の効果〕[Effect of device]

以上のように、この考案によればしゃ断器の電源負荷方
向においてトリツプバーをカケガネとラツチレバーとの
間の中間でかつ上側に配置することにより、電源負荷方
向のしゃ断器寸法が短かくなり、小形化が図れるという
効果がある。
As described above, according to the present invention, by disposing the trip bar in the power load direction of the circuit breaker in the middle between the scraper and the latch lever and on the upper side, the size of the circuit breaker in the power load direction becomes short and downsized. There is an effect that can be achieved.

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

第1図はこの考案の一実施例を示すトリツプリレー機構
の斜視図、第2図はトリツプリレー機構のオン、オフ状
態図、第3図はトリツプリレー機構のトリツプ瞬時を示
す図、第4図はカケガネの斜視図、第5図はラツチレバ
ーの斜視図、第6図はトリツプバーの斜視図、第7図は
従来のものを示す正面図、第8図は第7図の線VIII−VI
IIの断面図、第9図はオフ状態を示す第8図と同じ図、
第10図はトリツプ状態を示す第8図と同じ図、第11図は
オン、オフ時のトリツプリレー機構の拡大図、第12図は
トリツプ瞬時のトリツプリレー機構の拡大図である。 図において、(3)は固定接点、(4)は自動引きはず
し装置、(6)は可動接点、(7)は可動接触子、(2
0)は開閉操作機構、(20a)はクレドル、(24A),(2
6A),(28A)は回転中心軸、(23A)はカケガネ、(25
A)はラツチレバー、(27A)はトリツプバー、(31)は
トリツプ部材である。 なお、図中同一符号は同一または相当部分を示す。
FIG. 1 is a perspective view of a triplet relay mechanism showing an embodiment of the present invention, FIG. 2 is an on / off state diagram of the triplet relay mechanism, FIG. 3 is a diagram showing a trip instant of the triplet relay mechanism, and FIG. FIG. 5 is a perspective view of the latch lever, FIG. 6 is a perspective view of the trip bar, FIG. 7 is a front view showing a conventional one, and FIG. 8 is a line VIII-VI of FIG.
A sectional view of II, FIG. 9 is the same as FIG. 8 showing the off state,
FIG. 10 is the same view as FIG. 8 showing the trip state, FIG. 11 is an enlarged view of the trip relay mechanism at the time of on and off, and FIG. 12 is an enlarged view of the trip relay mechanism at the instant of trip. In the figure, (3) is a fixed contact, (4) is an automatic trip device, (6) is a movable contact, (7) is a movable contact, and (2)
(0) is the opening / closing operation mechanism, (20a) is the cradle, (24A), (2
6A) and (28A) are the central axis of rotation, (23A) is the bat, and (25A)
A) is a latch lever, (27A) is a trip bar, and (31) is a trip member. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】固定接点に接離される可動接点を有する可
動接触子と、この可動接触子を開閉させる開閉操作機構
と、この開閉操作機構のクレドルを介して前記可動接触
子をトリツプさせる自動引きはずし装置とを有する回路
しゃ断器であって、前記クレドルと係合してクレドルの
位置決めをするカケガネとこのカケガネと係合してカケ
ガネが前記クレドルにより回転せしめられないように止
めるラツチレバー、およびこのラツチレバーと係合して
ラツチレバーが前記カケガネにより回転せしめられない
ように止めるトリツプバーを備え、トリツプ時に前記自
動引きはずし装置のトリツプ部材により前記トリツプバ
ーが回転すると、前記ラツチレバーが前記トリツプバー
より外れて前記カケガネと共に解放されることにより前
記クレドルが解放状態のカケガネおよびラツチレバーを
回転させてはね上がり、前記可動接触子がトリツプする
ようにしたものにおいて、しや断器の電源負荷方向にお
いて前記トリツプバーの回転中心を前記カケガネおよび
ラツチレバーの両回転中心間に位置させて前記トリツプ
バーを前記カケガネと前記ラツチレバーとの間の中間で
かつ両者の上側に配置したことを特徴とする回路しゃ断
器。
1. A movable contact having a movable contact to and from a fixed contact, an opening / closing operation mechanism for opening and closing the movable contact, and an automatic pulling mechanism for tripping the movable contact through a cradle of the opening / closing operation mechanism. A circuit breaker having a disengaging device, which is a clasp that engages with the cradle to position the cradle, a latch lever that engages with the clasp and prevents the clasp from being rotated by the cradle, and the latch lever. A trip bar that engages with the latch lever to stop the latch lever from rotating by the rake, and when the trip bar is rotated by the trip member of the automatic tripping device during tripping, the latch lever disengages from the trip bar and is released together with the rake. The cradle is released by In this state, the movable contact is tripped up by rotating the rake and latch lever in the state, and the center of rotation of the trip bar is located between the center of rotation of the rake and the latch lever in the power load direction of the breaker and the breaker. The circuit breaker is characterized in that the trip bar is arranged at an intermediate position between the scraper and the latch lever and above the both.
JP1987075097U 1987-05-18 1987-05-18 Circuit breaker Expired - Lifetime JPH0747780Y2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP1987075097U JPH0747780Y2 (en) 1987-05-18 1987-05-18 Circuit breaker
KR1019880004066A KR880014610A (en) 1987-05-18 1988-04-11 Circuit breaker
ZA883472A ZA883472B (en) 1987-05-18 1988-05-17 Circuit breaker
EP88107876A EP0292841B1 (en) 1987-05-18 1988-05-17 Circuit breaker
DE3851465T DE3851465T2 (en) 1987-05-18 1988-05-17 Switch.
US07/195,637 US4888570A (en) 1987-05-18 1988-05-17 Circuit breaker
KR2019910009197U KR910006033Y1 (en) 1987-05-18 1991-06-21 Circuit breaker
HK98105843A HK1006889A1 (en) 1987-05-18 1998-06-22 Circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987075097U JPH0747780Y2 (en) 1987-05-18 1987-05-18 Circuit breaker

Publications (2)

Publication Number Publication Date
JPS63182448U JPS63182448U (en) 1988-11-24
JPH0747780Y2 true JPH0747780Y2 (en) 1995-11-01

Family

ID=13566324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987075097U Expired - Lifetime JPH0747780Y2 (en) 1987-05-18 1987-05-18 Circuit breaker

Country Status (2)

Country Link
JP (1) JPH0747780Y2 (en)
ZA (1) ZA883472B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100423223B1 (en) * 2001-07-19 2004-03-18 유기현 Automatic Transfer Switch of Power Transfer Switching Device
EP3244435B1 (en) * 2015-01-09 2019-08-28 Mitsubishi Electric Corporation Circuit breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4656444A (en) * 1985-08-16 1987-04-07 Westinghouse Electric Corp. Circuit breaker with force generating shunt

Also Published As

Publication number Publication date
JPS63182448U (en) 1988-11-24
ZA883472B (en) 1989-01-25

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