JP2004111121A - Spring operating device for switch - Google Patents

Spring operating device for switch Download PDF

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Publication number
JP2004111121A
JP2004111121A JP2002269524A JP2002269524A JP2004111121A JP 2004111121 A JP2004111121 A JP 2004111121A JP 2002269524 A JP2002269524 A JP 2002269524A JP 2002269524 A JP2002269524 A JP 2002269524A JP 2004111121 A JP2004111121 A JP 2004111121A
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Japan
Prior art keywords
toggle
lever
spring
toggle lever
rotation
Prior art date
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Granted
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JP2002269524A
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Japanese (ja)
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JP4249964B2 (en
Inventor
Tatsuji Shiromizu
白水　達二
Tomio Matsuo
松尾　富雄
Yasuyoshi Yamada
山田　泰義
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TKD KK
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TKD KK
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Priority to JP2002269524A priority Critical patent/JP4249964B2/en
Priority to TW092122532A priority patent/TWI272629B/en
Priority to PCT/JP2003/010721 priority patent/WO2004027805A1/en
Priority to CNB038220407A priority patent/CN1311490C/en
Priority to KR1020057003956A priority patent/KR100968919B1/en
Publication of JP2004111121A publication Critical patent/JP2004111121A/en
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Publication of JP4249964B2 publication Critical patent/JP4249964B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmission Devices (AREA)
  • Manipulator (AREA)
  • Gear Transmission (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spring operating device for a switch capable of optionally setting output torque, and realizing torque property corresponding to a load. <P>SOLUTION: In the spring operating device for the switch, a rotatable toggle lever 5 is jointed to a toggle spring 8, and the toggle lever 5 and the toggle spring 8 form a dead point according to the rotation of the toggle lever 5. The toggle lever 5 moves quickly just after the toggle lever 5 gets across the dead point by the rotation thereof, and the switch 14 is switched by the rotation of an output axis driven by the toggle lever 5. The toggle lever 5 and the toggle spring 8 are jointed through a junction lever 7 and a link 6 so as to obtain different output axis torque property in accordance with a rotation direction. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、ばねを蓄勢してそのエネルギーにより断路器などの開閉器の可動部を駆動する開閉器用ばね操作器に関する。
【０００２】
【従来の技術】
断路器などの開閉器の入・切操作を行うためにばね操作器が使用されている。図４は従来の開閉器用ばね操作器の斜視図である。開閉器用ばね操作器は、出力軸に取付けた連結レバーに連結した操作ロッドを介して断路器の入・切操作をするものである。
【０００３】
図４において、ギヤードモータ１の回転力をギヤードモータ１の出力軸に直結したウォーム軸２と対をなすウォームホイール４で減速して、ウォームホイール４に係合段部４ａ，５ａで係合されたトグルレバー５を回転させる。なお、ギヤードモータ１に代えて手動操作ハンドル２ｃを傘歯車２ｂの操作軸２ｄに連結して回転させることもできる。
【０００４】
トグルレバー５の回転によって、一端が固定され他端がトグルレバー５に連結されているトグルばね８を圧縮する。トグルレバー５とトグルばね８が一直線になって死点を形成したときにトグルばね８は最大に圧縮され、さらにトグルレバー５が回転してトグルばね８の死点を超えた直後に放勢されて、トグルレバー８はクイック動作する。この時トグルレバー５は、ウォームホイール４との係合が解け、トグルばね８の放勢力によってトグルレバー５を駆動し、さらにトグルレバー５の係合段部５ｂとレバー９の係合段部９ａの係合により駆動されたレバー９は、レバー９に設けたローラ１０と係合するフォーク状のハサミレバー１２を介して出力軸１１を駆動し、出力軸１１の連結レバー１３に連結した操作ロッド１５を介して断路器１４の入・切操作をする。
【０００５】
図５は従来のばね操作器の負荷トルクと操作器の出力トルク特性を示す図である。従来のばね操作器は、出力軸の動き始めである死点ではトグルばねの荷重は大きいがトグルレバーのモーメントアームが小さく、また出力軸の動き終わりではトグルレバーのモーメントアームは大きいがトグルばねの荷重は小さくなるため、トグルレバーのトルクは動作の途中にピークを有する山形特性となる。
【０００６】
一方、ばね操作器が適用される開閉器の負荷特性は、行程初期または行程終期に大きなトルクを必要とするため、前記ハサミレバーによって動作の途中にボトムを有するバスタブ形特性に変換している。
【０００７】
【発明が解決しようとする課題】
開閉器の負荷特性は図５に示すように入と切で全く異なる。一方、ハサミレバーによって変換されるトルク特性は入と切りで等しい特性とならざるをえず、行程初期と行程終期で過大なトルクが発生し、次に示す課題がある。
【０００８】
（１）無駄なエネルギーを放出するので必要以上のばね荷重となり、操作器の寸法が大きくなる。
【０００９】
（２）行程終期で過大なトルクが発生するので、緩衝装置が大型となる。
【００１０】
（３）ハサミレバー部分の滑り摩擦によるロスが大きい。
【００１１】
そこで、本発明は、出力トルク特性を任意に設定可能とし、負荷に応じたトルク特性が実現できる開閉器用ばね操作器を提供するものである。
【００１２】
【課題を解決するための手段】
本発明は、回転可能なトグルレバーにトグルばねが連結され、トグルレバーが回転してトグルレバーとトグルばねが死点を形成し、さらにトグルレバーが回転して前記死点を超えた直後にトグルレバーがクイック動作し、トグルレバーにより駆動された出力軸の回転により開閉器の入・切操作をする開閉器用ばね操作器において、トグルレバーとトグルばねの間に中継軸とリンクを設け、中継軸のレバー角度の設定により出力トルク特性を任意に設定して、負荷に応じたトルク特性が実現できる。
回転方向によって異なる出力軸トルク特性を備え、一方の回転方向では回転初期が回転終期より大きく、他方の回転方向では回転初期が回転終期より小さい出力軸トルク特性を備えることができる。
【００１３】
【発明の実施の形態】
図１は本発明のばね操作器の斜視図である。図１にはギヤードモータ、ウォーム軸周りは作図上図示していないが、図４に示す従来のばね操作器のギヤードモータ、ウォーム軸と変わるところはなく、本発明のばね操作器は、図４に示すように、ギヤードモータ１の出力軸には先端にウォーム２ａが設けられたウォーム軸２が直結され、ウォーム２ａは軸３に回転自在に軸支されたウォームホイール４とかみ合っており、ギヤードモータ１を駆動してウォーム軸２を回転させることによりウォームホイール４を減速して回転させることができる。なお、従来のばね操作器と同様にウォーム軸２は、傘歯車２ｂを設けて、手動操作ハンドル２ｃを傘歯車２ｂの操作軸２ｄに連結して回転させるようにしてもよい。
【００１４】
ウォームホイール４に隣接してトグルレバー５が軸３に回転自在に軸支されている。トグルレバー５のウォームホイール側にはウォームホイール４の係合段部４ａと係合する係合段部５ａが形成され、両者の係合段部４ａ，５ａの係合によりトグルレバー５を回転させる。
【００１５】
トグルレバー５にはリンク６の一端が枢着され、リンク６の他端は軸７ａに軸支された中継レバー７の一端に枢着されている。中継レバー７の他端は、一端が固定されたトグルばね８の他端に枢着されている。トグルレバー５の回転により、リンク６を介して中継レバー７が回転してトグルばね８を圧縮する。
【００１６】
トグルレバー５に隣接して連結レバー１３が回転自在に配置され、連結レバー１３のトグルレバー側にはトグルレバー５の係合段部５ｂと係合する係合段部１３ａが形成され、両者の係合段部５ｂ，１３ａの係合によりトグルレバー５がレバー１３を回転させる。トグルレバー５の係合段部５ｂと連結レバー１３の係合段部１３ａは、圧縮されたトグルばね８が死点を形成したときに係合するように形成する。連結レバー１３には断路器１４の操作ロッド１５が連結される。
【００１７】
次に本発明のばね操作器の動作について説明する。図２（ａ）〜（ｃ）はトグルレバーとトグルばねが変化する状態を示す図である。
【００１８】
切りの状態から、ギヤードモータ１または手動ハンドル２ｃによりウォーム軸２が回転すると、ウォームホイール４が回転し、ウォームホイール４の係合段部４ａとトグルレバー５の係合段部５ａの係合によりトグルレバー５を時計方向に回転させる。
【００１９】
トグルレバー５の回転はリンク６を介して中継レバー７を反時計方向に回転させ、トグルばね８を圧縮する（図２（ａ）参照）。
【００２０】
ウォームホイール４の回転によりトグルレバー５の回転が進み、トグルレバー５とリンク６が直線上に位置すると、トグルレバー５にトルクが作用しない死点の状態となる（図２（ｂ）参照）。
【００２１】
この死点を超えてさらに回転すると、中継レバー７の回転方向が時計方向に反転し、トグルばね８の圧縮状態が釈放され、加速されてトグルレバー５をさらに時計方向に回転させ、連結レバー１３を時計方向に回転させ、これに連結した操作ロッド１５を介して断路器１４を入り状態にする。（図２（ｃ）参照）。
【００２２】
本発明は、図３に示すように、回転方向によって異なる出力軸トルク特性を備え、一方の回転方向では回転初期が回転終期より大きく、他方の回転方向では回転初期が回転終期より小さい出力軸トルク特性を得ることができる。
【００２３】
【発明の効果】
本発明は、トグルレバーとトグルばねの間に中継軸とリンクを設け、中継軸のレバー角度の設定により出力トルク特性を任意に設定して、負荷に応じたトルク特性が実現できる。
無駄なエネルギーの放出を押さえることができるので、ばね操作器をコンパクトにすることができる。行程終期での過大なトルクの発生を押さえることができるので、緩衝装置を小さくすることができる。
【図面の簡単な説明】
【図１】本発明のばね操作器の斜視図である。
【図２】（ａ）〜（ｃ）は本発明のばね操作器のトグルレバーとトグルばねが変化する状態を示す図である。
【図３】本発明と従来の出力軸のトルク特性を示す図である。
【図４】従来の開閉器用ばね操作器の斜視図である。
【図５】従来のばね操作器の負荷トルクと操作器の出力トルク特性を示す図である。
【符号の説明】
１：ギヤードモータ
２：ウォーム軸
３：軸
４：ウォームホイール
５：トグルレバー
６：リンク
７：中継レバー
８：トグルばね
９：レバー
１０：ローラ
１１：出力軸
１２：ハサミレバー
１３：連結レバー
１４：断路器
１５：操作ロッド[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a spring operating device for a switch that stores a spring and drives a movable portion of a switch such as a disconnector with the energy of the spring.
[0002]
[Prior art]
A spring operating device is used to perform an on / off operation of a switch such as a disconnector. FIG. 4 is a perspective view of a conventional spring operating device for a switch. The spring operating device for a switch is used to perform an on / off operation of a disconnector via an operating rod connected to a connecting lever attached to an output shaft.
[0003]
In FIG. 4, the rotational force of the geared motor 1 is decelerated by a worm wheel 4 paired with a worm shaft 2 directly connected to the output shaft of the geared motor 1, and is engaged with the worm wheel 4 by engagement steps 4a and 5a. The toggle lever 5 is rotated. Note that, instead of the geared motor 1, a manual operation handle 2c can be connected to the operation shaft 2d of the bevel gear 2b and rotated.
[0004]
The rotation of the toggle lever 5 compresses a toggle spring 8 having one end fixed and the other end connected to the toggle lever 5. When the toggle lever 5 and the toggle spring 8 are aligned with each other to form a dead point, the toggle spring 8 is compressed to the maximum, and is released immediately after the toggle lever 5 rotates and exceeds the dead point of the toggle spring 8. Thus, the toggle lever 8 performs a quick operation. At this time, the toggle lever 5 is disengaged from the worm wheel 4 and drives the toggle lever 5 by the biasing force of the toggle spring 8, and furthermore, the engagement step 5b of the toggle lever 5 and the engagement step 9a of the lever 9 The lever 9 driven by the engagement of the operation rod drives the output shaft 11 through a fork-shaped scissor lever 12 that engages with the roller 10 provided on the lever 9, and is connected to the connection lever 13 of the output shaft 11. An on / off operation of the disconnector 14 is performed via the reference numeral 15.
[0005]
FIG. 5 is a diagram showing load torque of a conventional spring operating device and output torque characteristics of the operating device. In the conventional spring actuator, the load of the toggle spring is large at the dead point where the output shaft starts to move, but the moment arm of the toggle lever is small, and at the end of the movement of the output shaft, the moment arm of the toggle lever is large but the toggle spring has a large moment arm. Since the load is small, the torque of the toggle lever has a mountain-shaped characteristic having a peak during the operation.
[0006]
On the other hand, the load characteristic of the switch to which the spring operating device is applied requires a large torque at the beginning of the stroke or at the end of the stroke. Therefore, the load characteristic is converted into a bathtub type characteristic having a bottom during operation by the scissor lever.
[0007]
[Problems to be solved by the invention]
The load characteristics of the switch are completely different between ON and OFF as shown in FIG. On the other hand, the torque characteristics converted by the scissor lever must be the same between the on and off states, and excessive torque is generated at the beginning and end of the stroke, causing the following problems.
[0008]
(1) Since unnecessary energy is released, the spring load becomes more than necessary, and the size of the operating device increases.
[0009]
(2) Since excessive torque is generated at the end of the stroke, the shock absorber becomes large.
[0010]
(3) The loss due to sliding friction of the scissor lever portion is large.
[0011]
Accordingly, the present invention is to provide a spring operating device for a switch which can set an output torque characteristic arbitrarily and can realize a torque characteristic according to a load.
[0012]
[Means for Solving the Problems]
According to the present invention, a toggle spring is connected to a rotatable toggle lever, the toggle lever rotates to form a dead point between the toggle lever and the toggle spring, and the toggle lever is rotated immediately after the toggle lever exceeds the dead point. In a switch spring operating device in which a lever operates quickly and turns a switch on and off by rotation of an output shaft driven by the toggle lever, a relay shaft and a link are provided between the toggle lever and the toggle spring, and the relay shaft is provided. The output torque characteristic can be set arbitrarily by the setting of the lever angle, and the torque characteristic according to the load can be realized.
An output shaft torque characteristic that differs depending on the rotation direction can be provided. In one rotation direction, an output shaft torque characteristic in which the initial rotation is larger than the end of rotation can be provided, and in the other rotation direction, an output shaft torque that is smaller than the end of rotation can be provided.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view of the spring operating device of the present invention. Although the gear motor and the worm shaft are not shown in FIG. 1 around the drawing, there is no difference from the gear motor and worm shaft of the conventional spring operating device shown in FIG. As shown in FIG. 2, a worm shaft 2 having a worm 2a provided at the tip is directly connected to an output shaft of the geared motor 1, and the worm 2a is engaged with a worm wheel 4 rotatably supported by the shaft 3. By driving the motor 1 to rotate the worm shaft 2, the worm wheel 4 can be decelerated and rotated. The worm shaft 2 may be provided with a bevel gear 2b and connected to the operation shaft 2d of the bevel gear 2b to rotate the worm shaft 2 similarly to the conventional spring operating device.
[0014]
A toggle lever 5 is rotatably supported on the shaft 3 adjacent to the worm wheel 4. An engagement step 5a is formed on the worm wheel side of the toggle lever 5 to engage with the engagement step 4a of the worm wheel 4, and the toggle lever 5 is rotated by the engagement of the engagement steps 4a, 5a. .
[0015]
One end of a link 6 is pivotally connected to the toggle lever 5, and the other end of the link 6 is pivotally connected to one end of a relay lever 7 supported by a shaft 7a. The other end of the relay lever 7 is pivotally connected to the other end of a toggle spring 8 having one end fixed. The rotation of the toggle lever 5 causes the relay lever 7 to rotate via the link 6 to compress the toggle spring 8.
[0016]
The connection lever 13 is rotatably disposed adjacent to the toggle lever 5, and an engagement step 13 a that engages with the engagement step 5 b of the toggle lever 5 is formed on the toggle lever side of the connection lever 13. The toggle lever 5 rotates the lever 13 by the engagement of the engagement steps 5b and 13a. The engaging step 5b of the toggle lever 5 and the engaging step 13a of the connecting lever 13 are formed so as to engage when the compressed toggle spring 8 forms a dead point. The operation lever 15 of the disconnector 14 is connected to the connection lever 13.
[0017]
Next, the operation of the spring operating device of the present invention will be described. FIGS. 2A to 2C are views showing a state in which the toggle lever and the toggle spring change.
[0018]
When the worm shaft 2 is rotated by the geared motor 1 or the manual handle 2c from the off state, the worm wheel 4 is rotated, and the engagement between the engagement step 4a of the worm wheel 4 and the engagement step 5a of the toggle lever 5 causes the worm wheel 4 to rotate. Turn the toggle lever 5 clockwise.
[0019]
Rotation of the toggle lever 5 rotates the relay lever 7 counterclockwise via the link 6 to compress the toggle spring 8 (see FIG. 2A).
[0020]
When the rotation of the worm wheel 4 causes the rotation of the toggle lever 5 to advance, and the toggle lever 5 and the link 6 are located on a straight line, a dead point where torque does not act on the toggle lever 5 is established (see FIG. 2B).
[0021]
When the relay lever 7 further rotates beyond the dead center, the rotation direction of the relay lever 7 is reversed in the clockwise direction, the compression state of the toggle spring 8 is released, and the toggle spring 5 is accelerated to further rotate the toggle lever 5 in the clockwise direction. Is rotated clockwise, and the disconnector 14 is turned on via the operating rod 15 connected thereto. (See FIG. 2 (c)).
[0022]
As shown in FIG. 3, the present invention has an output shaft torque characteristic that varies depending on the rotation direction. In one rotation direction, the initial rotation is larger than the end of rotation, and in the other rotation direction, the output shaft torque is smaller than the end of rotation. Properties can be obtained.
[0023]
【The invention's effect】
According to the present invention, the relay shaft and the link are provided between the toggle lever and the toggle spring, and the output torque characteristic can be arbitrarily set by setting the lever angle of the relay shaft, so that the torque characteristic according to the load can be realized.
Since the release of useless energy can be suppressed, the spring operating device can be made compact. Since the generation of excessive torque at the end of the stroke can be suppressed, the size of the shock absorber can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a spring operating device of the present invention.
FIGS. 2A to 2C are diagrams showing a state in which a toggle lever and a toggle spring of the spring operating device of the present invention change.
FIG. 3 is a diagram showing torque characteristics of the present invention and a conventional output shaft.
FIG. 4 is a perspective view of a conventional spring operating device for a switch.
FIG. 5 is a diagram showing a load torque of a conventional spring operating device and an output torque characteristic of the operating device.
[Explanation of symbols]
1: Geared motor 2: Worm shaft 3: Axis 4: Worm wheel 5: Toggle lever 6: Link 7: Relay lever 8: Toggle spring 9: Lever 10: Roller 11: Output shaft 12: Scissors lever 13: Connection lever 14: Disconnector 15: Operation rod

Claims (2)

回転可能なトグルレバーにトグルばねが連結され、トグルレバーが回転してトグルレバーとトグルばねが死点を形成し、さらにトグルレバーが回転して前記死点を超えた直後にトグルレバーがクイック動作し、トグルレバーにより駆動された出力軸の回転により開閉器の入・切操作をする開閉器用ばね操作器において、
回転方向によって異なる出力軸トルク特性が得られるようにトグルレバーとトグルばねを中継レバーとリンクとにより連結したことを特徴とする開閉器用ばね操作器。A toggle spring is connected to the rotatable toggle lever, and the toggle lever rotates to form a dead point with the toggle lever and the toggle spring. Further, immediately after the toggle lever rotates and exceeds the dead point, the toggle lever operates quickly. In a switch spring operating device for turning on and off a switch by rotation of an output shaft driven by a toggle lever,
A toggle spring operating device for a switch, wherein a toggle lever and a toggle spring are connected by a relay lever and a link so that different output shaft torque characteristics are obtained depending on a rotation direction. 前記回転方向によって異なる出力軸トルク特性が、一方の回転方向では回転初期が回転終期より大きく、他方の回転方向では回転初期が回転終期より小さい出力軸トルク特性であることを特徴とする請求項１記載の開閉器用ばね操作器。2. An output shaft torque characteristic that differs according to the rotation direction, wherein the output shaft torque characteristic in one rotation direction is greater than the end of rotation in the initial rotation and the rotation in the other rotation direction is smaller than the end of rotation. A spring operating device for a switch according to the above.
JP2002269524A 2002-09-17 2002-09-17 Spring actuator for switch Expired - Lifetime JP4249964B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2002269524A JP4249964B2 (en) 2002-09-17 2002-09-17 Spring actuator for switch
TW092122532A TWI272629B (en) 2002-09-17 2003-08-15 Spring operator for switch
PCT/JP2003/010721 WO2004027805A1 (en) 2002-09-17 2003-08-25 Spring operator for switch
CNB038220407A CN1311490C (en) 2002-09-17 2003-08-25 Spring operator for switch
KR1020057003956A KR100968919B1 (en) 2002-09-17 2003-08-25 Spring operator for switch

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JP2002269524A JP4249964B2 (en) 2002-09-17 2002-09-17 Spring actuator for switch

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JP4249964B2 JP4249964B2 (en) 2009-04-08

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JP2013032528A (en) * 2010-08-04 2013-02-14 Unitika Ltd Resin composition including copolyester resin

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KR100804256B1 (en) * 2007-03-02 2008-02-18 (주)멕텍 Flexible manual on/off device
KR101038089B1 (en) 2009-08-28 2011-06-01 주식회사 효성 operating device for switch

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JP2545771B2 (en) * 1984-03-16 1996-10-23 日新電機株式会社 Spring operation device for switch
JPS63218112A (en) * 1987-03-06 1988-09-12 株式会社東芝 Operator for switch
JPH0793077B2 (en) * 1987-07-10 1995-10-09 株式会社日立製作所 Switch operating device
JP2866089B2 (en) * 1988-04-21 1999-03-08 株式会社日立製作所 Operating device for switchgear
JPH0646047Y2 (en) * 1988-05-06 1994-11-24 株式会社東芝 Switch operating device
JPH0527936U (en) * 1991-09-19 1993-04-09 株式会社明電舎 Electric power equipment operation device
JPH09161621A (en) * 1995-12-04 1997-06-20 Toshiba Corp Disconnecting switch
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013032528A (en) * 2010-08-04 2013-02-14 Unitika Ltd Resin composition including copolyester resin

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TW200405377A (en) 2004-04-01
KR100968919B1 (en) 2010-07-14
CN1311490C (en) 2007-04-18
KR20050057265A (en) 2005-06-16
JP4249964B2 (en) 2009-04-08
TWI272629B (en) 2007-02-01
CN1682330A (en) 2005-10-12

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