JPH036612B2 - - Google Patents
Info
- Publication number
- JPH036612B2 JPH036612B2 JP10538682A JP10538682A JPH036612B2 JP H036612 B2 JPH036612 B2 JP H036612B2 JP 10538682 A JP10538682 A JP 10538682A JP 10538682 A JP10538682 A JP 10538682A JP H036612 B2 JPH036612 B2 JP H036612B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- connecting shaft
- link
- upper link
- tripping
- 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
Links
- 238000005452 bending Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000002730 additional effect Effects 0.000 description 1
- 208000018999 crinkle Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring
Landscapes
- Breakers (AREA)
Description
【発明の詳細な説明】
本発明は、トグルリンクを用いた回路しや断器
の開閉操作機構に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an opening/closing operation mechanism for a circuit or disconnector using a toggle link.
開閉操作機構にトグルリンクを用いた回路しや
断器の従来例を第１図、第２図に示す。まず第１
図中の本発明と従来例の共通部分について説明す
ると、１は固定接触子、２は可動接触子、３は基
端部が操作機構部の枠板４に軸５により枢着さ
れ、これより上方にくの字形に延びて、その先端
部が常時引はずし機構のラツチ６に係合する引は
ずしレバー、７はトグルリンクで、引はずしレバ
ー３の中央部に第１の連結軸８により連結された
上リンク７ａと、可動接触子２に第２の連結軸９
により連結された下リンク７ｂからなつている。
１０はトグルリンク７の上、下リンク７ａ，７ｂ
を連結する屈曲軸、１１は図示しない下端部を枠
板４に枢着され、上端部にハンドル１２が取付け
られた操作レバー、１３は操作レバー１１の上端
のばね受け部１４と屈曲軸１０との間に張設され
たしや断ばね、１５は枠板４に取付けられたスト
ツパピンである。 Conventional examples of circuit breakers using toggle links in the opening/closing mechanism are shown in FIGS. 1 and 2. First of all
To explain the common parts between the present invention and the conventional example in the figure, 1 is a fixed contact, 2 is a movable contact, and 3 is a base end pivoted to a frame plate 4 of the operating mechanism section by a shaft 5. A trip lever that extends upward in a dogleg shape and whose tip is always engaged with a latch 6 of a tripping mechanism; 7 is a toggle link connected to the center of the trip lever 3 by a first connecting shaft 8; A second connecting shaft 9 is attached to the upper link 7a and the movable contact 2.
It consists of lower links 7b connected by.
10 are the upper and lower links 7a and 7b of the toggle link 7
11 is an operation lever whose lower end (not shown) is pivotally connected to the frame plate 4 and a handle 12 is attached to the upper end; 13 is an operation lever that connects the spring receiver 14 at the upper end of the operation lever 11 and the bending shaft 10; 15 is a stopper pin attached to the frame plate 4.
しや断器のON時には、図示のようにトグルリ
ンク７がしや断ばね１３により引張られて伸張
し、可動接触子２を固定接触子１に押付けてい
る。この時、屈曲軸１０に加わるばねの張力の水
平方向分力は上リンク７ａと枢着軸５の当接部で
受け止められている。この状態よりハンドル１２
をOFF側に倒すと、しや断ばね１３の中心線１
０−１４が第１の連結軸８の中心を過ぎた途端に
ばね１３の作用方向が左から右へ反転するため、
トグルリンク７が逆くの字形に屈曲して可動接触
子２を固定接触子１から開離させる。また、図示
のON状態において、引はずし機構が動作する
と、ラツチ６から解放された引はずしレバー３は
しや断ばね１３の作用により枢着軸５を中心とし
て図の反時計方向に回動してストツパピン１５に
当つて停止し、この間にトグルリンク７を介して
可動接触子２を固定接触子１から開離させる。 When the breaker is turned on, the toggle link 7 is pulled and expanded by the breaker spring 13 as shown in the figure, and the movable contact 2 is pressed against the fixed contact 1. At this time, the horizontal component of the spring tension applied to the bending shaft 10 is received by the abutting portion between the upper link 7a and the pivot shaft 5. From this state, the handle 12
When turned to the OFF side, the center line 1 of the shingle spring 13
As soon as 0-14 passes the center of the first connecting shaft 8, the direction of action of the spring 13 is reversed from left to right.
The toggle link 7 is bent in an inverted dogleg shape to separate the movable contact 2 from the fixed contact 1. Furthermore, when the tripping mechanism operates in the ON state shown in the figure, the tripping lever 3 released from the latch 6 rotates counterclockwise about the pivot shaft 5 due to the action of the break spring 13. During this time, the movable contact 2 is separated from the fixed contact 1 via the toggle link 7.
第２図は従来例のトリツプ時における操作機構
動作過程図で、図中Ａ，Ｂの添字を付した符号は
それぞれ同一時点における機構各部の対応する位
置を示している。同図から明らかなように従来例
では、トリツプ動作時に引はずしレバー３の回動
初期より第１の連結軸８がしや断ばね１３の中心
線上の８−Ａ点を過ぎるまでは、上リンク７ａが
屈曲軸１０の近傍で枢着軸５に当接していて、ト
グルリンク７は全体としてほぼ伸張した状態のま
まで第１の連結軸８の移動量の垂直方向成分とほ
ぼ等しい距離だけ上方に移動し、その結果、屈曲
軸１０は上リンク７ａと枢着軸５の当接部を中心
とする円弧状の軌跡にそつて１０−Ａ点まで引き
上げられるが、この間の可動接触子２の開離距離
はきわめてわずかである。そして、第１の連結軸
８が８−Ａ点を過ぎた途端にしや断ばね１３の作
用方向が左から右へ反転するため、このばね力で
トグルリンク７が逆くの字形に屈曲し、第１の連
結軸８が８−Ａ点から８−Ｂ点へ移動する間に屈
曲軸１０は第１の連結軸８を中心とする円弧状の
軌跡にそつて１０−Ｂ点へ移動して、可動接触子
２を開極位置２−Ｂまで引き上げる。 FIG. 2 is a diagram showing the operational process of the operating mechanism during a trip in a conventional example, in which the suffixed symbols A and B indicate the corresponding positions of the respective parts of the mechanism at the same time. As is clear from the figure, in the conventional example, during the trip operation, from the beginning of rotation of the tripping lever 3 until the first connecting shaft 8 passes the point 8-A on the center line of the break spring 13, the upper link 7a is in contact with the pivot shaft 5 in the vicinity of the bending shaft 10, and the toggle link 7 is moved upward by a distance approximately equal to the vertical component of the amount of movement of the first connecting shaft 8 while remaining in a substantially extended state as a whole. As a result, the bending shaft 10 is pulled up to point 10-A along an arcuate locus centered on the abutting portion of the upper link 7a and the pivot shaft 5, but the movement of the movable contact 2 during this time is The separation distance is extremely small. As soon as the first connecting shaft 8 passes the point 8-A, the acting direction of the shear spring 13 reverses from left to right, so the toggle link 7 is bent in an inverted dogleg shape by this spring force. , while the first connecting shaft 8 moves from point 8-A to point 8-B, the bending shaft 10 moves to point 10-B along an arcuate trajectory centered on the first connecting shaft 8. Then, move the movable contactor 2 up to the open position 2-B.
したがつて、第１の連結軸８が８−Ａ点を過ぎ
るまでの可動接触子２の開離速度は、８−Ａ点を
過ぎた後の開離速度に比べずつと緩慢である。こ
のように従来例では、可動接触子の初期開離速度
が遅いため、限流効果が少なく、大きな電流をし
や断しなければならないことになり、しや断性能
を上げられなかつた。 Therefore, the opening speed of the movable contactor 2 until the first connecting shaft 8 passes the point 8-A is gradually slower than the opening speed after the first connecting shaft 8 passes the point 8-A. As described above, in the conventional example, since the initial opening speed of the movable contactor is slow, the current limiting effect is small, and a large current must be interrupted quickly, making it impossible to improve the breaking performance.
よつて本発明の主目的は、安価でコンパクトな
構成により可動接触子の初期開離速度を速めてし
や断性能を向上させた回路しや断器を提供するこ
とにある。 SUMMARY OF THE INVENTION Accordingly, the main object of the present invention is to provide a circuit breaker that has an inexpensive and compact structure, increases the initial opening speed of the movable contact, and improves the shearing performance.
上記の目的を達成するため本発明では、引はず
しレバーがラツチから解放されて可動接触子を開
離させる方向に回動する間の、少なくともその回
動開始直後より前記第１の連結軸の中心がしや断
ばねの中心線を過ぎるまでの区間は、トグルリン
クの上リンクが引はずしレバーの枢着軸よりも前
記第１の連結軸に近い位置に設けられた枠板のス
トツパ部に当接して支えられるようにし、これに
より引はずしレバーの回動初期に上リンクをテコ
にしてトグルリンク全体を大きく屈曲させ、可動
接触子の初期開離速度を速めたものである。 In order to achieve the above object, in the present invention, while the trip lever is released from the latch and rotates in the direction of separating the movable contact, the center of the first connecting shaft is set at least immediately after the start of the rotation. In the section until it passes the center line of the release spring, the upper link of the toggle link hits the stopper part of the frame plate provided at a position closer to the first connecting shaft than the pivot shaft of the tripping lever. This allows the entire toggle link to be bent significantly using the upper link as a lever at the beginning of the tripping lever's rotation, thereby increasing the initial opening speed of the movable contact.
以下、本発明の実施例を図面に基づいて説明す
る。 Embodiments of the present invention will be described below based on the drawings.
第３図は本発明の一実施例図である。図中、従
来例と対応する部分には同一符号を付して示し、
第２図と同様Ａ，Ｂの添字を付した符号はそれぞ
れ同一時点における機構各部の対応する位置を示
している。 FIG. 3 is a diagram showing one embodiment of the present invention. In the figure, parts corresponding to those in the conventional example are designated with the same reference numerals.
As in FIG. 2, the suffixes A and B each indicate the corresponding position of each part of the mechanism at the same time.
本実施例は図示しない枠板に設けたストツパピ
ン１５をトリツプ動作時の引はずしレバー３に対
するストツパ部とトグルリンク７の上リンク７ａ
に対するストツパ部に兼用した場合で、上リンク
７ａには常時ストツパピン１５と近接して対向す
る突出部７ａ−１を設け、常時（しや断器ON
時）は上リンク７ａが屈曲軸１０の近傍で引はず
しレバー３の枢着軸５に当接して、その当接部で
操作レバー１１の上端のばね受け部１４と屈曲軸
１０との間に張設された図示しないしや断ばねの
水平方向分力を受け、トグルリンク７を伸張状態
に保つように構成してある。 In this embodiment, a stopper pin 15 provided on a frame plate (not shown) is connected to a stopper portion for a tripping lever 3 and an upper link 7a of a toggle link 7 during a tripping operation.
In this case, the upper link 7a is provided with a protrusion 7a-1 that always faces the stopper pin 15 in close proximity to the stopper pin 15.
When the upper link 7a is in contact with the pivot shaft 5 of the trip lever 3 near the bending shaft 10, the upper link 7a is in contact with the spring receiving part 14 at the upper end of the operating lever 11 and the bending shaft 10 at the contact part. The toggle link 7 is configured to maintain the toggle link 7 in an extended state by receiving a horizontal component of a tensioned spring (not shown).
トリツプ動作時には、引はずしレバー３が図示
しないラツチから解放されて、ばね力により枢着
軸５を中心として反時計方向に回動し、これに伴
つて引はずしレバー３と上リンク７ａを連結する
第１の連結軸８は第３図の８−Ａ，８−Ｂの位置
へと移動する。連結軸８の移動軌跡の中心は枢着
軸５であるから、引はずしレバー３の回動開始直
後よりギヤツプｇがゼロになつて、上リンク７ａ
の突出部７ａ−１が枢着軸５よりも第１の連結軸
８に近い位置にあるストツパピン１５に当接し、
以後この当接部が支点となつて上リンク７ａが反
時計方向に回動することになり、このため伸張状
態にあつたトグルリンク７は枢着軸５から離れて
急速に逆くの字形に屈曲する。これに伴い、屈曲
軸１０は各瞬間の上リンク突出部７ａ−１とスト
ツパピン１５の当接部を中心とする円弧の包絡線
上を移動し、第１の連結軸８がしや断ばねの中心
線上の８−Ａ点まで移動した時、屈曲軸１０の位
置は１０−Ａとなつて、可動接触子２を２−Ａの
位置まで引き上げる。この間の可動接触子開離距
離を従来例と比較すると、従来例では屈曲軸１０
の近傍にあつた上リンク７ａの回動支点位置が第
１の連結軸８側に近寄つた分だけ引はずしレバー
３の回動初期における屈曲軸１０の移動距離が大
きくなり、したがつて、この間の可動接触子２の
開離距離も従来例より格段に大きくなる。 During the tripping operation, the tripping lever 3 is released from a latch (not shown) and rotates counterclockwise about the pivot shaft 5 due to the force of the spring, thereby connecting the tripping lever 3 and the upper link 7a. The first connecting shaft 8 moves to positions 8-A and 8-B in FIG. Since the center of the movement locus of the connecting shaft 8 is the pivot shaft 5, the gap g becomes zero immediately after the tripping lever 3 starts rotating, and the upper link 7a
The protruding portion 7a-1 contacts the stopper pin 15 located at a position closer to the first connecting shaft 8 than the pivot shaft 5,
Thereafter, the upper link 7a will rotate counterclockwise using this abutting portion as a fulcrum, and as a result, the toggle link 7, which was in an extended state, will separate from the pivot shaft 5 and rapidly turn into an inverted dogleg shape. bend. Along with this, the bending shaft 10 moves on the envelope of an arc centered on the abutting part of the upper link protrusion 7a-1 and the stopper pin 15 at each moment, and the first connecting shaft 8 moves along the center of the bending spring. When moved to point 8-A on the line, the position of the bending shaft 10 becomes 10-A, and the movable contact 2 is pulled up to the position 2-A. Comparing the separation distance of the movable contact during this time with the conventional example, it is found that in the conventional example, the bending axis 10
As the pivot point of the upper link 7a, which was near The separation distance of the movable contactor 2 is also significantly larger than that of the conventional example.
第１の連結軸８が８−Ａ点を過ぎると、しや断
ばねの作用方向が反転するため、トグルリンク７
は、屈曲軸１０が１０−Ｂ点に到達するまでばね
力によりさらに屈曲し、可動接触子２は２−Ｂの
位置まで引き上げられるが、第１の連結軸８が８
−Ａ点を過ぎた後の可動接触子の開離距離はそれ
以前の開離距離に比べてずつと少ない。 When the first connecting shaft 8 passes the point 8-A, the direction of action of the toggle spring is reversed, so the toggle link 7
is further bent by the spring force until the bending shaft 10 reaches the 10-B point, and the movable contact 2 is pulled up to the 2-B position, but the first connecting shaft 8
- The separation distance of the movable contact after passing point A is gradually smaller than the separation distance before that point.
上記した本発明による回路しや断器の動作と従
来例の動作を引はずしレバーの回動角に対する可
動接触子の変位で比較して示すと第４図のように
なる。横軸のＡ，Ｂは第３図中の３−Ａ，３−Ｂ
に対応する引はずしレバーの位置を示しており、
従来例では第４図中Ａ点までの可動接触子開離距
離が極めて少なく、Ａ点を過ぎてからの開離距離
に大きく依存していたのに対し、本発明によれ
ば、前述した理由によりＡ点までの開離距離を充
分大きくできるので、この間の初期開離速度が速
まり、開極に至るまでの時間を大幅に短縮でき
る。 FIG. 4 shows a comparison of the operation of the circuit breaker according to the present invention and the operation of the conventional example in terms of the displacement of the movable contact with respect to the rotation angle of the tripping lever. A and B on the horizontal axis are 3-A and 3-B in Figure 3.
The corresponding trip lever position is shown.
In the conventional example, the separation distance of the movable contact up to point A in FIG. Since the separation distance to point A can be made sufficiently large, the initial separation speed during this period can be increased, and the time required to reach the opening can be significantly shortened.
上記効果を奏するためには、上リンク突出部７
ａ−１は、引はずしレバー３の回動開始直後より
第１の連結軸８が第３図の８−Ａ点を過ぎるまで
の間ストツパピン１５に当接していれば充分であ
るが、引はずしレバー３の回動開始より回動完了
までのほぼ全域にわたりストツパピン１５と当接
するよう上リンク突出部７ａ−１を構成すること
もできる。特に、本実施例のように引はずしレバ
ー３の回動完了後も引続き上リンク突出部７ａ−
１をストツパピン１５に当接（または近接）させ
ておけば、上記効果以外に次のような付随効果も
得られる。 In order to achieve the above effect, the upper link protrusion 7
For a-1, it is sufficient that the first connecting shaft 8 is in contact with the stopper pin 15 from immediately after the trip lever 3 starts rotating until it passes the point 8-A in FIG. The upper link protrusion 7a-1 may be configured to abut the stopper pin 15 over almost the entire range from the start of rotation to the completion of rotation of the lever 3. In particular, even after the rotation of the tripping lever 3 is completed as in the present embodiment, the upper link protruding portion 7a-
1 in contact with (or in close proximity to) the stopper pin 15, the following additional effects can be obtained in addition to the above effects.
トリツプ動作により開離した可動接触子２が枢
着軸５に当つてはね返ろうとする時、そのはね返
りを抑える力は、トグルリンク７が屈曲した状態
から伸張した状態へもどる時のしや断ばねの伸
び、すなわち第２図および第３図中の１０−Ｂ点
より１０−Ａ点へ向う屈曲軸１０の移動軌跡の切
線と、操作レバー１１のばね受け部１４を中心と
し１０−Ｂ点を通る円の挾む角θの大きさに比例
する。従来例では、この挾角θが小さく、可動接
触子の開極後にトグルリンク７が屈曲した状態か
ら伸張した状態へ動きやすいため、可動接触子２
のはね返り距離が大きく、しや断を長引かせた
り、しや断不能におちいることもあつたが、本実
施例では第３図に示すように従来例に比べて挾角
θを大きくすることができるので、可動接触子２
が枢着軸５に当つてはね返ろうとする時、トグル
リンク７の動きを妨げるばねの力が強く働いて可
動接触子２のはね返りを抑え、これにより開離し
た可動接触子２が再度固定接触子１に近付いてし
や断時間を長引かせたり、しや断不能となるのを
防止することができる。 When the movable contact 2 that has been separated by the tripping action hits the pivot shaft 5 and tries to bounce back, the force that suppresses the bounce is the force that is applied to the toggle link 7 when it returns from the bent state to the extended state. The extension of the spring, that is, the tangential line of the movement locus of the bending shaft 10 from the point 10-B to the point 10-A in FIGS. 2 and 3, and the point 10-B centered on the spring receiving part 14 of the operating lever 11. It is proportional to the size of the angle θ between the circles passing through. In the conventional example, this angle θ is small and the toggle link 7 easily moves from the bent state to the extended state after the movable contact is opened, so the movable contact 2
However, in this example, as shown in Fig. 3, it is possible to increase the angle θ compared to the conventional example. Since it is possible, moveable contact 2
When it hits the pivot shaft 5 and tries to bounce back, the force of the spring that prevents the movement of the toggle link 7 acts strongly and suppresses the bounce of the movable contact 2, thereby fixing the separated movable contact 2 again. It is possible to prevent the contactor 1 from being close to the contactor 1 and prolonging the curing time, or from being unable to crinkle.
第５図は本発明の他の実施例図で、ストツパピ
ン１５の代わりに枠板４の一部を紙面と直角に折
り曲げてストツパ部１５′を形成した例であり、
作用効果は第３図の実施例と変わりがない。 FIG. 5 shows another embodiment of the present invention, in which a stopper portion 15' is formed by bending a part of the frame plate 4 at right angles to the plane of the paper instead of the stopper pin 15.
The operation and effect are the same as the embodiment shown in FIG.
これ以外にも本発明は種々変形して実施するこ
とが可能で、たとえば上記実施例ではしや断器
ON時にトグルリンク７を枢着軸５に当接させて
トグルリンク伸張状態でのストツパとしている
が、しや断器ON時にも上リンク突出部７ａ−１
をストツパ部１５，１５′に当接させてトグルリ
ンク伸張状態でのストツパに兼用してもよく、ま
た、上リンク突出部７ａ−１に当接するストツパ
部を引はずしレバー３に対するストツパとは別に
設けてもよい。 In addition to this, the present invention can be implemented with various modifications; for example, in the above embodiment,
At the time of ON, the toggle link 7 is brought into contact with the pivot shaft 5 to act as a stopper in the extended state of the toggle link.
may be brought into contact with the stopper portions 15, 15' and used as a stopper when the toggle link is in the extended state.Also, the stopper portion that abuts on the upper link protruding portion 7a-1 may be used separately from the stopper against the lever 3. It may be provided.
上リンク突出部７ａ−１を上リンク７ａに取付
けた別の部片で構成してもよいことは言うまでも
ない。 It goes without saying that the upper link protrusion 7a-1 may be constructed from a separate piece attached to the upper link 7a.
以上説明したように本発明によれば、引はずし
レバーの回動初期よりトグルリンクと引はずしレ
バーの連結軸がしや断ばねの中心線を過ぎるまで
の間の可動接触子の初期開離速度を速めることが
できるので、限流作用が有効に働き、しや断性能
の向上に大きな効果がある。しかも、本発明はし
や断ばねを大きくすることなく、枠板のストツパ
部に当接するようトグルリンクの一部の形状を変
更する等の簡易な手段で実施できるので、しや断
器を安価でコンパクトな構成とすることができ
る。 As explained above, according to the present invention, the initial opening speed of the movable contact from the initial rotation of the trip lever until the connecting shaft of the toggle link and the trip lever passes the center line of the shear spring. Since the current-limiting effect works effectively, it has a great effect on improving the shearing performance. Moreover, the present invention can be implemented by simple means such as changing the shape of a part of the toggle link so that it comes into contact with the stopper part of the frame plate without increasing the size of the toggle spring. This allows for a compact configuration.
第１図は従来例の操作機構部を示す側断面図、
第２図は従来例の動作過程図、第３図は本発明の
一実施例の動作過程図、第４図は本発明と従来例
のしや断性能を引はずしレバーの回動角に対する
可動接触子の変位で表わした説明図、第５図は本
発明の他の実施例を示す側面図である。
１…固定接触子、２…可動接触子、３…引はず
しレバー、４…枠板、５…引はずしレバーの枢着
軸、６…ラツチ、７…トグルリンク、７ａ…上リ
ンク、７ｂ…下リンク、８…第１の連結軸、９…
第２の連結軸、１０…屈曲軸、１１…操作レバ
ー、１２…ハンドル、１３…しや断ばね、１４…
ばね受け部、１５，１５′…ストツパ部、７ａ−
１…ストツパ部に当接する上リンクの突出部。
FIG. 1 is a side sectional view showing the operating mechanism of a conventional example;
Fig. 2 is an operating process diagram of a conventional example, Fig. 3 is an operating process diagram of an embodiment of the present invention, and Fig. 4 shows the shearing performance of the present invention and the conventional example. FIG. 5 is a side view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Fixed contact, 2...Movable contact, 3...Trip lever, 4...Frame plate, 5...Trip lever pivot shaft, 6...Latch, 7...Toggle link, 7a...Upper link, 7b...Lower Link, 8...First connection shaft, 9...
Second connection shaft, 10...Bending shaft, 11...Operation lever, 12...Handle, 13...Shipping spring, 14...
Spring receiving part, 15, 15'...stopper part, 7a-
1...Protruding part of the upper link that comes into contact with the stopper part.
Claims (1)
板に枢着され、先端部が引はずし機構のラツチに
係合する引はずしレバーと、該引はずしレバーの
中央部に第１の連結軸により連結された上リンク
および前記可動接触子に第２の連結軸により連結
された下リンクからなるトグルリンクと、該トグ
ルリンクの上、下リンクを連結する屈曲軸と操作
レバーとの間に張つたしや断ばねを有する回路し
や断器において、前記引はずしレバーがラツチか
ら解放されて可動接触子を開離させる方向に回動
する間の、少なくともその回動開始直後より前記
第１の連結軸の中心が前記しや断ばねの中心線を
過ぎるまでの区間は、前記上リンクが引はずしレ
バーの枢着軸よりも前記第１の連結軸に近い位置
に設けられた枠板のストツパ部に当接して支えら
れるよう構成配置したことを特徴とする回路しや
断器。 ２ 前記引はずしレバーが回動する間を通じ、前
記上リンクが前記ストツパ部に当接するよう構成
配置したことを特徴とする特許請求の範囲１項記
載の回路しや断器。 ３ 前記引はずしレバーの回動完了後も、前記上
リンクが前記ストツパ部に当接または近接して位
置するよう構成配置したことを特徴とする特許請
求の範囲１，２項のいずれかに記載の回路しや断
器。[Scope of Claims] 1. Both fixed and movable contacts facing each other, a trip lever whose base end is pivoted to a frame plate and whose tip engages a latch of a tripping mechanism, and a toggle link consisting of an upper link connected to the center by a first connecting shaft and a lower link connected to the movable contact by a second connecting shaft; and a bending shaft connecting the upper and lower links of the toggle link. In a circuit or disconnector having a tension spring or disconnection spring between the tripping lever and the operating lever, at least the rotation while the tripping lever is released from the latch and rotates in the direction of opening the movable contact. Immediately after the start of movement until the center of the first connecting shaft passes the center line of the bow spring, the upper link is located closer to the first connecting shaft than the pivot axis of the tripping lever. A circuit breaker characterized in that it is configured and arranged so as to be supported by coming into contact with a stopper portion of a frame plate provided in the circuit. 2. The circuit breaker according to claim 1, wherein the upper link is configured to abut against the stopper portion throughout the rotation of the tripping lever. 3. According to any one of claims 1 and 2, the upper link is arranged so as to be in contact with or close to the stopper portion even after the rotation of the tripping lever is completed. circuit break or break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10538682A JPS58223233A (en) | 1982-06-21 | 1982-06-21 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10538682A JPS58223233A (en) | 1982-06-21 | 1982-06-21 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58223233A JPS58223233A (en) | 1983-12-24 |
| JPH036612B2 true JPH036612B2 (en) | 1991-01-30 |
Family
ID=14406216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10538682A Granted JPS58223233A (en) | 1982-06-21 | 1982-06-21 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58223233A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4650944A (en) * | 1985-07-18 | 1987-03-17 | Westinghouse Electric Corp. | Molded case circuit breaker with an improved operating mechanism having a pivot-transfer trip-free linkage |
| JPH0532922Y2 (en) * | 1986-09-09 | 1993-08-23 | ||
| JPH0697591B2 (en) * | 1988-11-18 | 1994-11-30 | 富士電機株式会社 | Circuit breaker switching mechanism |
| US7582267B1 (en) | 2005-10-05 | 2009-09-01 | Fleetguard, Inc. | Space saving serviceable exhaust aftertreatment assembly |
-
1982
- 1982-06-21 JP JP10538682A patent/JPS58223233A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58223233A (en) | 1983-12-24 |
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