JP2000133097A - Breaker - Google Patents
BreakerInfo
- Publication number
- JP2000133097A JP2000133097A JP10309681A JP30968198A JP2000133097A JP 2000133097 A JP2000133097 A JP 2000133097A JP 10309681 A JP10309681 A JP 10309681A JP 30968198 A JP30968198 A JP 30968198A JP 2000133097 A JP2000133097 A JP 2000133097A
- Authority
- JP
- Japan
- Prior art keywords
- lever
- closing
- spring
- latch
- cam
- 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.)
- Granted
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は遮断器に関し、操作
機構を改良したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker and an improved operation mechanism.
【０００２】[0002]
【従来の技術】遮断器には、投入バネを蓄勢したのちに
放勢することにより、高速で投入を行う構成のものがあ
る。斯る遮断器として、特開平８−２９３２３１号公報
に開示されたものがある。2. Description of the Related Art Some circuit breakers have a configuration in which closing is performed at a high speed by releasing a spring after storing a spring. As such a circuit breaker, there is one disclosed in Japanese Patent Application Laid-Open No. 8-293231.
【０００３】図５は遮断器における操作機構の部分を示
すものである。図示しない部材に駆動軸１が固定され、
駆動軸１には回転自在にボス部１ａが設けられている。
そして、ボス部１ａには投入カム２ａ，トリップレバー
３，投入カム２ｂ，バネガイド４，蓄勢カム１０が挿通
され、操作軸５の内部に駆動軸１が挿入されている。投
入カム２ａに一端が固着されたピン６が長孔７，孔８に
挿通され、ピン６の他端にはバネガイド４を囲繞する投
入バネ９の一端が結合されている。FIG. 5 shows a part of an operation mechanism in a circuit breaker. The drive shaft 1 is fixed to a member (not shown),
The drive shaft 1 is provided with a boss 1a rotatably.
The input cam 2a, the trip lever 3, the input cam 2b, the spring guide 4, and the energy storage cam 10 are inserted through the boss 1a, and the drive shaft 1 is inserted into the operation shaft 5. A pin 6, one end of which is fixed to the input cam 2 a, is inserted through the elongated holes 7 and 8, and the other end of the pin 6 is connected to one end of an input spring 9 surrounding the spring guide 4.
【０００４】操作軸５には蓄勢カム１０が固着されてお
り、蓄勢カム１０に固着されたピン１０ａに投入バネ９
の他端が結合されている。A power storage cam 10 is fixed to the operation shaft 5, and a closing spring 9 is attached to a pin 10 a fixed to the power storage cam 10.
Are connected to each other.
【０００５】トリップレバー３にはピン１１を介して駆
動レバー１２が回動自在に設けられ、駆動レバー１２に
はローラ１３が設けられている。１４は投入ラッチであ
り、反時計回りに投入カム２ａ，２ｂの外周面に付勢さ
れて投入カム２ａ，２ｂが時計方向へ回動するのを拘束
する。１５はトリップラッチであり、反時計回りにトリ
ップレバー３の外周面に付勢されてトリップレバー３が
時計方向へ回動するのを拘束する。１６は蓄勢ラッチで
あり、時計回りに蓄勢カム１０の外周面に付勢されて蓄
勢カム１０が反時計方向へ回動するのを拘束する。A drive lever 12 is rotatably provided on the trip lever 3 via a pin 11, and a roller 13 is provided on the drive lever 12. Reference numeral 14 denotes a closing latch, which is urged counterclockwise to the outer peripheral surfaces of the closing cams 2a and 2b to restrain the closing cams 2a and 2b from rotating clockwise. A trip latch 15 is urged counterclockwise by the outer peripheral surface of the trip lever 3 to restrain the trip lever 3 from rotating clockwise. Reference numeral 16 denotes an energy-storing latch, which is urged clockwise to the outer peripheral surface of the energy-storing cam 10 to restrain the energy-storing cam 10 from rotating counterclockwise.
【０００６】次に斯る操作機構を用いて図示しない開閉
部を開閉する作用を説明する。図６は開閉部が開であっ
て投入バネが放勢の状態、図７は開閉部が開のままで投
入バネが蓄勢された状態、図８は投入バネが一部放勢し
て開閉部が閉じた状態、図９は投入バネが完全に放勢し
てトリップレバーが時計方向へ回動し開閉部が再び開に
なった状態である。Next, the operation of opening and closing a not-shown opening / closing section using the operation mechanism will be described. 6 shows a state in which the opening / closing section is open and the closing spring is released, FIG. 7 shows a state in which the closing spring is stored with the opening / closing section open, and FIG. 8 shows a state in which the closing spring is partially released and opened / closed. FIG. 9 shows a state in which the opening portion is closed, the closing spring is completely released, the trip lever is rotated clockwise, and the opening / closing portion is opened again.
【０００７】図６に示すようにピン６にはリセットバネ
１７の一端が結合されており、投入カム２ａ，２ｂと更
にはトリップレバー３が反時計方向へ付勢されている。
そして、ストッパ１８によりトリップレバー３と投入カ
ム２ａ，２ｂの反時計方向への回動が拘束されている。
このとき、前記投入ラッチ１４により、投入カム２ａ，
２ｂが時計方向へ回動するのが拘束されており、トリッ
プラッチ１５は蓄勢カム１０の外縁部に当接するためト
リップレバー３と係合しない。この状態ではローラ１３
は投入カム２ａ，２ｂの小径部１９，１９にはいり込む
ためにローラ２０を押圧することはない。このため、レ
バー２１はフリーであり、復帰バネ２２の付勢力により
絶縁ロッド２３が主軸２４を中心に反時計方向へ回動し
た位置を占め、開閉部２５は開状態を保持する。As shown in FIG. 6, one end of a reset spring 17 is connected to the pin 6, and the closing cams 2a and 2b and the trip lever 3 are urged counterclockwise.
The stopper 18 restricts the trip lever 3 and the closing cams 2a, 2b from rotating counterclockwise.
At this time, the closing latch 14 causes the closing cam 2a,
2b is restrained from rotating clockwise, and the trip latch 15 does not engage with the trip lever 3 because it contacts the outer edge of the energy storage cam 10. In this state, the roller 13
Does not press the roller 20 to enter the small diameter portions 19, 19 of the input cams 2a, 2b. For this reason, the lever 21 is free, and the urging force of the return spring 22 occupies the position where the insulating rod 23 has turned counterclockwise about the main shaft 24, and the opening / closing part 25 maintains the open state.
【０００８】次に、操作軸５を時計方向へ回動させ、ピ
ン１０ａが図７の位置を占めるようにすると、投入バネ
９が蓄勢される。このとき、投入バネ９の蓄勢による回
転力が投入カム２ａ，２ｂに加わるが、前記のように投
入ラッチ１４が作用するために回動が拘束される。一
方、図６の状態ではトリップレバー３と係合していなか
ったトリップラッチ１５は、蓄勢カム１０の大径部から
小径部にはいり込むため、付勢力により反時計方向へ回
動してトリップレバー３の外周面と係合し、トリップレ
バー３の時計方向への回動が拘束される。Next, when the operating shaft 5 is rotated clockwise so that the pin 10a occupies the position shown in FIG. 7, the closing spring 9 is charged. At this time, the rotational force due to the accumulation of the closing spring 9 is applied to the closing cams 2a and 2b, but the rotation is restricted because the closing latch 14 acts as described above. On the other hand, the trip latch 15 that has not been engaged with the trip lever 3 in the state of FIG. 6 enters the small-diameter portion from the large-diameter portion of the energy storage cam 10, and is turned counterclockwise by the urging force to trip. Engagement with the outer peripheral surface of the lever 3 restricts the clockwise rotation of the trip lever 3.
【０００９】次に、図７における投入バネ９の蓄勢状態
から投入ラッチ１４を時計方向へ回動させると、投入ラ
ッチ１４の係合が外れた投入カム２ａ，２ｂは投入バネ
９の放勢力によって時計方向へ回動する。このため、図
８に示すようにローラ１３が投入カム２ａ，２ｂの小径
部１９，１９から押し出されローラ２０を押す。このた
め、レバー２１は主軸２４を中心として時計方向へ回動
し、開閉部２５は閉じる。このときの投入カム２ａ，２
ｂの回転量はピン６が長孔７の端部に当接するまでの量
（トリップレバー３は、トリップラッチ１５が係合する
ため回転しない）であり、投入バネ９の放勢の全てが行
われる手前である。Next, when the closing latch 14 is rotated clockwise from the charged state of the closing spring 9 in FIG. 7, the closing cams 2a and 2b disengaged from the closing latch 14 cause the releasing force of the closing spring 9 to be released. To rotate clockwise. Therefore, as shown in FIG. 8, the roller 13 is pushed out from the small diameter portions 19, 19 of the input cams 2a, 2b and pushes the roller 20. Therefore, the lever 21 rotates clockwise about the main shaft 24, and the opening / closing section 25 is closed. The input cams 2a, 2 at this time
The amount of rotation of b is the amount until the pin 6 comes into contact with the end of the long hole 7 (the trip lever 3 does not rotate because the trip latch 15 is engaged). It is just before it is done.
【００１０】図８の状態からトリップラッチ１５を時計
方向へ回動させると、トリップレバー３の拘束が解除さ
れ、投入バネ９の残りの放勢分だけトリップレバー３が
投入カム２ａ，２ｂと共に時計方向へ回動して図９のよ
うにトリップレバー３がストッパ１８から離れる。この
ため、駆動レバー１２の曲面部１２ａがローラ２０の左
方へ移動し、復帰バネ２２の付勢力で主軸２４が反時計
方向へ回動して開閉部２５が開になる。When the trip latch 15 is rotated clockwise from the state shown in FIG. 8, the restraint of the trip lever 3 is released, and the trip lever 3 is moved clockwise together with the closing cams 2a and 2b by the amount of the remaining release of the closing spring 9. Then, the trip lever 3 moves away from the stopper 18 as shown in FIG. For this reason, the curved surface portion 12a of the drive lever 12 moves to the left of the roller 20, the main shaft 24 rotates counterclockwise by the urging force of the return spring 22, and the opening / closing portion 25 is opened.
【００１１】トリップレバー３が時計方向へ回動したと
き、トリップレバー３の外周部で蓄勢ラッチ１６が反時
計方向へ回動させられ、蓄勢カム１０に対する蓄勢ラッ
チ１６の係合が外れる。このため、投入カム２ａ，２ｂ
とトリップレバー３と蓄勢カム１０とは投入バネ９によ
って一定の位置関係を保った状態でリセットバネ１７に
より反時計方向へ回動され、図６の状態に復帰する。When the trip lever 3 rotates clockwise, the energy-storing latch 16 is rotated counterclockwise around the outer periphery of the trip lever 3, and the energy-storing latch 16 is disengaged from the energy-storing cam 10. . For this reason, the input cams 2a, 2b
The trip lever 3 and the energy storage cam 10 are rotated counterclockwise by the reset spring 17 while maintaining a fixed positional relationship by the closing spring 9, and return to the state of FIG.
【００１２】[0012]
【発明が解決しようとする課題】ところが、図７〜図８
の投入動作だけでなく図８〜図９の遮断動作にも投入バ
ネ９の放勢エネルギーを用いるため、投入バネ９の蓄勢
のためのエネルギーが大きくなり、蓄勢カム１０の回転
角度を大きくしなければならない。[0007] However, FIGS.
8 to 9 as well as the closing operation of FIG. 8 to FIG. 9, the energy for closing the spring 9 is used to increase the energy of the closing spring 9. Must.
【００１３】また、投入用の投入ラッチと遮断用のトリ
ップラッチのほかに蓄勢ラッチも必要なためにラッチが
３つも必要になり、構造が複雑になる。Further, since an energy-storing latch is required in addition to the closing latch for closing and the trip latch for closing, three latches are required, and the structure becomes complicated.
【００１４】そこで本発明は、斯る課題を解決した遮断
器を提供することを目的とする。Therefore, an object of the present invention is to provide a circuit breaker that solves the above problem.
【００１５】[0015]
【課題を解決するための手段】斯る目的を達成するため
の請求項１に係る遮断器の構成は、回転自在な回転板を
設けるとともに回転板を駆動手段に連動連結し、回転板
の軸心と略平行な軸心を有する投入カムを回動自在に設
け、投入カムの偏心した位置に設けたバネ掛けピンと固
定部との間に投入バネを設け、投入カムの外周面にロッ
ド係合部を形成する一方、回転板の偏心した位置に回動
自在に一端を結合した蓄勢ロッドの他端をロッド係合部
と係合可能に設け、蓄勢ロッドの往復運動により投入カ
ムが回動され投入バネが蓄勢された状態で保持するため
のラッチ係合部を投入カムに形成する一方、ラッチ係合
部に係合する投入ラッチを設け、投入カムの外周面には
外径寸法の大きい大径部を形成し、回動軸に回動自在に
第一レバーの一端を支持し、第一レバーの他端には大径
部に押圧される第一ローラを設け、当該第一ローラの軸
心を中心として回動自在に第二レバーを設け、操作軸に
固着されるとともに遮断部を開閉するための主レバーの
先端を押圧して遮断部を投入する第二ローラを第二レバ
ーに設け、遮断部に設けられた遮断バネの付勢力が加わ
ることによる第二レバーの回動を拘束する引き外しラッ
チを設けたことを特徴とする。According to a first aspect of the present invention, there is provided a circuit breaker including a rotatable rotating plate, a rotating plate interlockingly connected to driving means, and a shaft of the rotating plate. A loading cam having an axis substantially parallel to the center is rotatably provided, and a loading spring is provided between a spring hook pin provided at an eccentric position of the loading cam and a fixed portion, and a rod is engaged with an outer peripheral surface of the loading cam. While the other end of the energy storage rod is rotatably connected to the eccentric position of the rotating plate, the other end of the energy storage rod is provided so as to be able to engage with the rod engaging portion. The closing cam is formed with a latch engaging portion for holding the moved and loaded spring in the charged state, and a closing latch for engaging with the latch engaging portion is provided. One end of the first lever that is rotatable about a rotation axis The other end of the first lever is provided with a first roller pressed against the large-diameter portion, and a second lever is provided rotatably around the axis of the first roller, and is fixed to the operation shaft. A second roller that presses the tip of the main lever to open and close the blocking unit and closes the blocking unit is provided on the second lever, and the urging force of the blocking spring provided on the blocking unit is applied to the second lever. A trip latch for restraining rotation is provided.
【００１６】[0016]
【発明の実施の形態】以下、本発明による遮断器の実施
の形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the circuit breaker according to the present invention will be described below.
【００１７】本発明による遮断器は、図１に示す操作機
構２７と、図示しない遮断部とで構成されている。そし
て、図１（ｂ）に示すように操作軸２８に主レバー２９
が固着され、主レバー２９が反時計方向へ回動されると
遮断部が投入され、時計方向へ回動されると遮断される
ようになっている。また、投入状態では図示しない遮断
バネが蓄勢され、投入状態では主レバー２９を反時計方
向へ回動させる付勢力が常時作用する。The circuit breaker according to the present invention comprises an operating mechanism 27 shown in FIG. 1 and a breaking unit (not shown). Then, as shown in FIG.
When the main lever 29 is turned counterclockwise, the shut-off portion is closed, and when the main lever 29 is turned clockwise, the shut-off portion is shut off. In the closed state, a blocking spring (not shown) is charged, and in the closed state, an urging force for rotating the main lever 29 counterclockwise always acts.
【００１８】操作機構２７の構造を以下に説明する。取
付板３０には回転板３１が回転自在に設けられている。
回転板３１には減速機３２を介して、駆動手段としての
モータ３３が連動連結されている。取付板３０にはリミ
ットスイッチ３４が取り付けられており、後述する投入
バネ３８を蓄勢する際はモータ３３のスイッチがＯＮに
なりその他の場合にはＯＦＦとなるように回転板３１に
は小径部３１ａと大径部３１ｂとが形成されている。The structure of the operation mechanism 27 will be described below. A rotating plate 31 is provided on the mounting plate 30 so as to be rotatable.
A motor 33 as a driving means is linked to the rotating plate 31 via a speed reducer 32. A limit switch 34 is attached to the mounting plate 30, and a small diameter portion is provided on the rotating plate 31 so that the switch of the motor 33 is turned on when the closing spring 38 described later is charged and turned off in other cases. 31a and a large diameter portion 31b are formed.
【００１９】回転板３１の下方には、回転板３１の軸心
と平行な軸心を有する投入カム３５が取付板３０と補助
板４３との間に設けた軸４４を介して回動自在に設けら
れている。投入カム３５には後述するローラ５２を下方
へ押圧する大径部３５ｃが形成されている。投入カム３
５の偏心した位置にはバネ掛けピン３６が固着され、取
付板３０の上部に固着したバネ掛けピン３７とバネ掛け
ピン３６との間には投入バネ３８が掛けられている。投
入カム３５にはロッド係合部３５ａが形成され、ロッド
係合部３５ａに係合するピン３９を一端に挾持する一対
のロッド４０の他端が回転体３１の偏心位置にピン３１
ｃを介して回転自在に結合されている。なお、４１は分
離用ピンである。Below the rotary plate 31, a loading cam 35 having an axis parallel to the axis of the rotary plate 31 is rotatable via a shaft 44 provided between the mounting plate 30 and the auxiliary plate 43. Is provided. The input cam 35 is formed with a large-diameter portion 35c for pressing a roller 52 described below downward. Input cam 3
A spring hook pin 36 is fixed to the eccentric position of 5, and a closing spring 38 is hooked between the spring hook pin 37 fixed to the upper part of the mounting plate 30 and the spring hook pin 36. A rod engaging portion 35a is formed on the input cam 35, and the other end of a pair of rods 40 that pinch a pin 39 engaging with the rod engaging portion 35a at one end is located at an eccentric position of the rotating body 31.
It is rotatably connected via c. Reference numeral 41 denotes a separating pin.
【００２０】投入カム３５には投入バネ３８の蓄勢と放
勢とにより往復回動する分だけ回動自在となるように円
弧状の長孔３５ｂが形成され、長孔３５ｂ内に挿入され
たピン４２が取付板３０と補助板４３との間に固着され
ている。投入バネ３８の蓄勢状態で投入カム３５の回動
を拘束するために、投入カム３５の外周面にはラッチ係
合部３５ｄが形成される一方、取付板３０と補助板４３
との間に投入ラッチ４５が回動自在に設けられ、投入ラ
ッチ４５には略半円状の切欠部４５ａが形成されてい
る。投入ラッチ４５の端部には投入ラッチ４５と直角な
方向へ突出する突出部４５ｂが形成され、突出部４５ｂ
を押圧する投入電磁石４６が補助板４３に取り付けられ
ている。また、投入電磁石４６が押圧する方向とは反対
の方向へ突出部４５ｂを付勢するバネ４７が設けられて
いる。The insertion cam 35 is formed with an arc-shaped long hole 35b so as to be rotatable by the amount of reciprocation by the accumulation and release of the injection spring 38, and is inserted into the long hole 35b. A pin 42 is fixed between the mounting plate 30 and the auxiliary plate 43. In order to restrain the rotation of the closing cam 35 when the closing spring 38 is charged, a latch engaging portion 35 d is formed on the outer peripheral surface of the closing cam 35, while the mounting plate 30 and the auxiliary plate 43 are formed.
And a closing latch 45 is provided rotatably between them, and the closing latch 45 is formed with a substantially semicircular cutout portion 45a. At the end of the closing latch 45, a projecting portion 45b projecting in a direction perpendicular to the closing latch 45 is formed.
Is mounted on the auxiliary plate 43. Further, a spring 47 for urging the protruding portion 45b in a direction opposite to the direction pressed by the input electromagnet 46 is provided.
【００２１】投入カム３５の下方には取付板３０と補助
板４３との間に回動軸を兼用する引き外しラッチ４８が
回動自在に設けられている。引き外しラッチ４８には一
対の第一レバー４９の一端が回動自在に設けられ、一対
の第一レバー４９の他端と一対の第二レバー５０の上端
とがピン５１を介して回動自在に結合されている。そし
て、ピン５１の中央部には第一ローラ５２が設けられて
いる。一対の第二レバー５０における第一ローラ５２の
近傍には主レバー２９の左端を押圧するための第二ロー
ラ５４がピン５３を介して設けられている。５５は、一
対の第一レバー４９を投入カム３５へ向かって付勢する
バネ、５６はピン５１を中心として回動自在な一対の第
二レバー５０を図１（ｂ）中の右方へ向かって付勢する
バネである。一対の第一レバー４９に対する一対の第二
レバー５０の回動範囲を制限するために、一対の第一レ
バー４９には夫々円弧状の長孔４９ａが形成される一
方、一対の第二レバー５０間にはピン５０ａが結合さ
れ、ピン５０ａの両端が長孔４９ａ内に遊嵌されてい
る。Below the input cam 35, a tripping latch 48, which also serves as a rotation axis, is rotatably provided between the mounting plate 30 and the auxiliary plate 43. One end of a pair of first levers 49 is rotatably provided on the release latch 48, and the other end of the pair of first levers 49 and the upper end of a pair of second levers 50 are rotatable via pins 51. Is joined to. A first roller 52 is provided at the center of the pin 51. In the vicinity of the first roller 52 in the pair of second levers 50, a second roller 54 for pressing the left end of the main lever 29 is provided via a pin 53. Reference numeral 55 denotes a spring for urging the pair of first levers 49 toward the closing cam 35, and reference numeral 56 denotes a pair of second levers 50 that are rotatable around the pins 51 and is directed rightward in FIG. This is a spring that urges. In order to limit the rotation range of the pair of second levers 50 with respect to the pair of first levers 49, the pair of first levers 49 are each formed with an arc-shaped long hole 49a. A pin 50a is connected between the pins, and both ends of the pin 50a are loosely fitted in the long holes 49a.
【００２２】前記のように図示しない遮断バネの付勢力
により主レバー２９の左端に上方へ向かう付勢力が加わ
るため一対の第二レバー５０がピン５３を中心として時
計方向へ回動しようとする。第二レバー５０の外周面に
は係合部５０ｂが形成され、前記引き外しラッチ４８は
第二レバー５０を拘束したり開放したりできるように長
さ方向の中間部近傍に略半円形の切欠部４８ａが形成さ
れ、第二レバー５０を開放するために引き外しラッチ４
８の端部には引き外しラッチ４８と直角な方向へ突出す
る突出部４８ｂが形成されている。そして、図１（ｂ）
中の時計方向へ引き外しラッチ４８を回動させる引き外
し電磁石５７と、反時計方向へ回動させるためのバネ５
８とが設けられている。As described above, since the upward biasing force is applied to the left end of the main lever 29 by the biasing force of the cut-off spring (not shown), the pair of second levers 50 tends to rotate clockwise about the pin 53. An engagement portion 50b is formed on the outer peripheral surface of the second lever 50, and the tripping latch 48 has a substantially semicircular notch near the middle portion in the longitudinal direction so that the second lever 50 can be restrained or released. A portion 48a is formed, and the release latch 4 is used to release the second lever 50.
A projection 48b is formed at an end of the projection 8 in a direction perpendicular to the tripping latch 48. Then, FIG.
A tripping electromagnet 57 for turning the latch 48 in the middle clockwise direction and a spring 5 for turning in the counterclockwise direction
8 are provided.
【００２３】次に、斯る遮断器の作用を説明する。図２
は投入バネ３８が放勢することによって投入カム３５が
時計方向へ回動し、投入カム３５の大径部３５ｃがロー
ラ５２を下方へ押圧しローラ５４が主レバー２９の左端
を下方へ押圧して操作軸２８を反時計方向へ回動させて
図示しない遮断部を投入した状態である。このとき、図
示しない遮断バネには遮断部を遮断する方向へ図２中で
破線矢印で示す付勢力が常時加わっており、第二レバー
５０の係合部５０ｂに引き外しラッチ４８が係合して投
入状態を保持している。Next, the operation of the circuit breaker will be described. FIG.
The closing cam 35 rotates clockwise by the release of the closing spring 38, the large diameter portion 35c of the closing cam 35 presses the roller 52 downward, and the roller 54 presses the left end of the main lever 29 downward. In this state, the operation shaft 28 is rotated counterclockwise to enter a blocking unit (not shown). At this time, a biasing force indicated by a broken line arrow in FIG. 2 is constantly applied to a blocking spring (not shown) in a direction for blocking the blocking portion, and the release latch 48 is engaged with the engaging portion 50b of the second lever 50. To keep the input state.
【００２４】図２の状態から投入電磁石５７を励磁して
引き外しラッチ４８を係合部５０ｂから外すと、図示し
ない遮断バネの放勢力によって主レバー２９が時計方向
へ回動するとともにこれらの付勢力によって第二レバー
５０がピン５１を中心として時計方向へ回動する。この
ため、図３に示すように左端の上動が可能になった主レ
バー２９が時計方向へ回動し、図示しない遮断部が遮断
した状態となる。When the closing electromagnet 57 is excited to release the latch 48 from the engaging portion 50b from the state shown in FIG. 2, the main lever 29 is rotated clockwise by the urging force of a not-shown cut-off spring, and these components are attached. The second lever 50 is rotated clockwise around the pin 51 by the force. For this reason, as shown in FIG. 3, the main lever 29, which can move upward at the left end, rotates clockwise, and a blocking section (not shown) is in a closed state.
【００２５】図３の状態からモータ３３を回転させる
と、その回転運動が減速機３２を介して回転体３１へ伝
わり、回転体３１が反時計方向へ回転する。すると、ロ
ッド４０の先端のピン３９がロッド係合部３５ａに係合
し、図４（ａ）に示すように投入カム３５が反時計方向
へ回動して投入バネ３８が蓄勢される。すると、投入カ
ム３５の大径部３５ｃが回転移動するためにバネ５５の
付勢力でローラ５２が上昇するとともにローラ５４が主
レバー２９の左側から上方へ外れたためにバネ５６によ
って付勢される第二レバー５０がピン５１を中心として
反時計方向へ回動し、図４（ｂ）の状態になる。する
と、バネ５８の作用により引き外しラッチ４８が反時計
方向へ回動し、切欠部５０ｂと係合する。このとき、バ
ネ４７によって反時計方向へ付勢される投入ラッチ４５
がラッチ係合部３５ｄに係合するため、投入カム３５が
時計方向へ回動することはない。When the motor 33 is rotated from the state shown in FIG. 3, the rotating motion is transmitted to the rotating body 31 via the speed reducer 32, and the rotating body 31 rotates counterclockwise. Then, the pin 39 at the tip of the rod 40 is engaged with the rod engaging portion 35a, and the closing cam 35 rotates counterclockwise as shown in FIG. Then, the roller 52 is raised by the urging force of the spring 55 because the large diameter portion 35c of the input cam 35 is rotationally moved, and the roller 54 is urged by the spring 56 because the roller 54 is disengaged upward from the left side of the main lever 29. The two levers 50 rotate counterclockwise about the pin 51, and the state shown in FIG. Then, the tripping latch 48 rotates counterclockwise by the action of the spring 58 and engages with the notch 50b. At this time, the closing latch 45 urged counterclockwise by the spring 47
Is engaged with the latch engagement portion 35d, so that the closing cam 35 does not rotate clockwise.
【００２６】図４（ｂ）の状態から回転体３１が更に反
時計方向へ回転すると、図４（ｃ）のように分離用ピン
４１の作用によってロッド４０の先端のピン３９がロッ
ド係合部３５ａから外れ、その後に回転体３１の大径部
３１ｂがリミットスイッチ３４の位置へ回転し、モータ
３３の回転が停止する。When the rotating body 31 further rotates counterclockwise from the state of FIG. 4B, the pin 39 at the tip of the rod 40 is moved by the action of the separating pin 41 as shown in FIG. After that, the large diameter portion 31b of the rotating body 31 rotates to the position of the limit switch 34, and the rotation of the motor 33 stops.
【００２７】図４（ｃ）の状態から投入電磁石４６を励
磁すると、バネ４７の付勢力に抗して投入ラッチ４５が
回動させられ、投入ラッチ４５がラッチ係合部３５ｄか
ら外れる。すると、投入バネ３８が放勢することにより
投入カム３５が時計方向へ回動し、投入カム３５の大径
部３５ｃがローラ５２を下方へ押圧し、前記のように切
欠部５０ｂに引き外しラッチ４８が係合することで回動
の拘束された第二レバー５０のローラ５４が主レバー２
９の左端を下方へ押圧し、前記のように図示しない遮断
部が投入され、図２の状態に戻る。When the closing electromagnet 46 is excited from the state shown in FIG. 4C, the closing latch 45 is rotated against the urging force of the spring 47, and the closing latch 45 is disengaged from the latch engaging portion 35d. Then, when the closing spring 38 is released, the closing cam 35 rotates clockwise, and the large-diameter portion 35c of the closing cam 35 presses the roller 52 downward, and is released to the notch 50b as described above. The roller 54 of the second lever 50 whose rotation is restricted by the engagement of the
9, the left end is pressed downward, the shut-off portion (not shown) is closed as described above, and the state returns to the state of FIG.
【００２８】なお、本実施の形態では引き外しラッチと
第一レバーの回動軸とを兼用したが、別々に設けてもよ
い。In this embodiment, the trip latch and the rotation axis of the first lever are shared, but they may be separately provided.
【００２９】[0029]
【発明の効果】以上の説明からわかるように、請求項１
に係る遮断器によれば投入バネの蓄勢状態を保持するラ
ッチと投入用のラッチとを兼用したので、従来のように
３つのラッチを必要とせず２つのラッチで足りる。従っ
て構造が簡単である。As can be seen from the above description, claim 1
According to the circuit breaker according to (1), since the latch for holding the charged state of the closing spring and the closing latch are also used, three latches are not required as in the related art, and two latches are sufficient. Therefore, the structure is simple.
【００３０】また、引き外しには遮断バネを利用するた
めに従来のように投入バネの付勢力を使用しなくてもよ
く、投入バネの蓄勢エネルギーの全てを投入に使用でき
ることから投入バネの蓄勢エネルギーを有効に利用でき
る。Further, the biasing force of the closing spring does not have to be used as in the prior art in order to use the cut-off spring for the release, and all of the stored energy of the closing spring can be used for closing. The stored energy can be used effectively.
【図１】本発明による遮断器の実施の形態の操作機構に
係り、（ａ）は左側面図、（ｂ）は正面図。FIG. 1A is a left side view and FIG. 1B is a front view of an operation mechanism according to an embodiment of a circuit breaker according to the present invention.
【図２】本発明による遮断器の実施の形態の操作機構に
おける投入状態を示す正面図。FIG. 2 is a front view showing a closed state of the operation mechanism of the embodiment of the circuit breaker according to the present invention.
【図３】本発明による遮断器の実施の形態の操作機構に
おける引き外し状態を示す正面図。FIG. 3 is a front view showing a tripped state of the operation mechanism of the circuit breaker according to the embodiment of the present invention.
【図４】本発明による遮断器の実施の形態の操作機構に
係り、（ａ）は引き外し状態であって投入バネ蓄勢中の
状態を示す正面図、（ｂ）は投入バネの蓄勢完了時の状
態を示す正面図、（ｃ）は投入バネの蓄勢完了直後の状
態を示す正面図。FIGS. 4A and 4B are front views showing an operating mechanism of an embodiment of a circuit breaker according to the present invention, in which FIG. FIG. 3C is a front view showing a state at the time of completion, and FIG.
【図５】従来の遮断器の操作機構における分解斜視図。FIG. 5 is an exploded perspective view of a conventional operation mechanism of a circuit breaker.
【図６】従来の遮断器の操作機構における遮断時であっ
て投入バネ蓄勢前の正面図。FIG. 6 is a front view of a conventional circuit breaker operating mechanism at the time of interruption and before the closing spring is charged.
【図７】従来の遮断器の操作機構における遮断時であっ
て投入バネ蓄勢状態の正面図。FIG. 7 is a front view of a conventional breaker operating mechanism at the time of disconnection and in a state where a closing spring is charged.
【図８】従来の遮断器の操作機構における投入バネの一
部を放勢して投入した状態の正面図。FIG. 8 is a front view of a state in which a part of a closing spring in a conventional operation mechanism of a circuit breaker is released and closed.
【図９】従来の遮断器の操作機構における投入バネの残
りを放勢して遮断した状態の正面図。FIG. 9 is a front view showing a state in which the rest of the closing spring in the conventional operation mechanism of the circuit breaker is released and cut off.
２８…操作軸 ２９…主レバー ３１…回転体 ３３…モータ ３５…投入カム ３５ａ…ロッド係合部 ３５ｃ…大径部 ３５ｄ…ラッチ係合部 ３６…バネ掛けピン ３８…投入バネ ４０…ロッド ４５…投入ラッチ ４８…引き外しラッチ ４９…第一レバー ５０…第二レバー ５２，５４…ローラ 28 operating shaft 29 main lever 31 rotating body 33 motor 35 closing cam 35a rod engaging portion 35c large diameter portion 35d latch engaging portion 36 spring pin 38 38 closing spring 40 rod 45 Closing latch 48 ... Release latch 49 ... First lever 50 ... Second lever 52, 54 ... Roller
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平尾 雄次郎 東京都品川区大崎２丁目１番17号 株式会 社明電舎内 (72)発明者 山田 幸雄 東京都品川区大崎２丁目１番17号 株式会 社明電舎内 (72)発明者 中西 良一 静岡県沼津市東間門字上中溝515番地 沼 津明電興産株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yujiro Hirao 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Co., Ltd. Inside Meidensha Co., Ltd. (72) Yukio Yamada 2-1-1, Osaki, Shinagawa-ku, Tokyo Stock Company Inside Shameidensha (72) Inventor Ryoichi Nakanishi Numazu City, Shizuoka Prefecture
Claims (1)
板を駆動手段に連動連結し、回転板の軸心と略平行な軸
心を有する投入カムを回動自在に設け、投入カムの偏心
した位置に設けたバネ掛けピンと固定部との間に投入バ
ネを設け、投入カムの外周面にロッド係合部を形成する
一方、回転板の偏心した位置に回動自在に一端を結合し
た蓄勢ロッドの他端をロッド係合部と係合可能に設け、
蓄勢ロッドの往復運動により投入カムが回動され投入バ
ネが蓄勢された状態で保持するためのラッチ係合部を投
入カムに形成する一方、ラッチ係合部に係合する投入ラ
ッチを設け、投入カムの外周面には外径寸法の大きい大
径部を形成し、 回動軸に回動自在に第一レバーの一端を支持し、第一レ
バーの他端には大径部に押圧される第一ローラを設け、
当該第一ローラの軸心を中心として回動自在に第二レバ
ーを設け、操作軸に固着されるとともに遮断部を開閉す
るための主レバーの先端を押圧して遮断部を投入する第
二ローラを第二レバーに設け、遮断部に設けられた遮断
バネの付勢力が加わることによる第二レバーの回動を拘
束する引き外しラッチを設けたことを特徴とする遮断
器。A rotatable rotary plate is provided, and the rotary plate is connected to a driving means in an interlocking manner. An input cam having an axis substantially parallel to the axis of the rotary plate is rotatably provided, and the input cam is eccentric. A charging spring is provided between the spring hook pin provided at the position and the fixed portion, and a rod engaging portion is formed on the outer peripheral surface of the charging cam, while one end is rotatably coupled to the eccentric position of the rotating plate. The other end of the rod is provided so as to be able to engage with the rod engaging portion,
The input cam is rotated by the reciprocating movement of the energy storage rod to form a latch engaging portion on the input cam for holding the input spring in an energized state, and an input latch engaged with the latch engaging portion is provided. A large diameter portion having a large outer diameter is formed on the outer peripheral surface of the input cam, one end of the first lever is rotatably supported on the rotation shaft, and the other end of the first lever is pressed against the large diameter portion. The first roller to be provided,
A second roller that is provided with a second lever rotatably about the axis of the first roller and that is fixed to the operation shaft and presses the tip of a main lever for opening and closing the blocking unit to enter the blocking unit. Wherein the release lever is provided on the second lever, and a trip latch for restraining the rotation of the second lever due to the application of the urging force of the blocking spring provided on the blocking portion is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30968198A JP4122598B2 (en) | 1998-10-30 | 1998-10-30 | Breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30968198A JP4122598B2 (en) | 1998-10-30 | 1998-10-30 | Breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000133097A true JP2000133097A (en) | 2000-05-12 |
| JP4122598B2 JP4122598B2 (en) | 2008-07-23 |
Family
ID=17996006
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30968198A Expired - Fee Related JP4122598B2 (en) | 1998-10-30 | 1998-10-30 | Breaker |
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| Country | Link |
|---|---|
| JP (1) | JP4122598B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101078982B1 (en) | 2010-01-13 | 2011-11-01 | 엘에스산전 주식회사 | Operating handle for an electric switch |
| CN103956278A (en) * | 2014-04-10 | 2014-07-30 | 北京华电瑞通电力工程技术有限公司 | Operating mechanism for high-voltage switch power distribution device |
-
1998
- 1998-10-30 JP JP30968198A patent/JP4122598B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101078982B1 (en) | 2010-01-13 | 2011-11-01 | 엘에스산전 주식회사 | Operating handle for an electric switch |
| CN103956278A (en) * | 2014-04-10 | 2014-07-30 | 北京华电瑞通电力工程技术有限公司 | Operating mechanism for high-voltage switch power distribution device |
| CN103956278B (en) * | 2014-04-10 | 2016-05-25 | 北京华电瑞通电力工程技术有限公司 | For the operating mechanism of high-voltage switch gear controller switching equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4122598B2 (en) | 2008-07-23 |
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