JP2005158266A

JP2005158266A - Operation device for switch

Info

Publication number: JP2005158266A
Application number: JP2003390363A
Authority: JP
Inventors: Masaru Harada; 大原田
Original assignee: Yaskawa Electric Corp
Current assignee: Yaskawa Electric Corp
Priority date: 2003-11-20
Filing date: 2003-11-20
Publication date: 2005-06-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation device for a switch reduced in the number of part items by simplifying the structure thereof. <P>SOLUTION: This device comprises a first toggle lever 4 rotated around an operation shaft 3, a second toggle lever 5 mounted rotatably around the rotating shaft 3, a tensile spring 6 laid over between the first toggle lever 4 and the second toggle lever 5, a cam 8 pressed and rotated by the second toggle lever 5, a main circuit driving shaft 7 integrally rotated with the cam 8 to mechanically open and close a main circuit, and a microswitch 9 engaged with the cam 8 to switch the normal and reverse rotation of an electric motor by the operation of a cam 9. A gear mechanism 2 is interposed between the electric motor and the operation shaft 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、開閉器を電動機の駆動力で開閉する操作装置に関するものである。 The present invention relates to an operating device that opens and closes a switch with a driving force of an electric motor.

開閉器を電動機の駆動力で開閉する開閉器の操作装置は、各種提案されている。例えば、特許文献１あるいは特許文献２には、電動機の駆動力により投入ばねに、ばね力を蓄勢し、この投入ばねのばね力により可動電極を作動して開閉器を閉路する操作装置が開示されている。また、特許文献３にはトグルばねを備えて、開状態あるいは閉状態を保持する操作装置が開示されている。
特開平８−９９６６７０号公報特開平１０−９７８２２号公報特開平５−２８８８１号公報 Various operation devices for a switch that opens and closes the switch with a driving force of an electric motor have been proposed. For example, Patent Document 1 or Patent Document 2 discloses an operation device that stores a spring force in a closing spring by a driving force of an electric motor and operates a movable electrode by the spring force of the closing spring to close a switch. Has been. Patent Document 3 discloses an operating device that includes a toggle spring and holds an open state or a closed state.
JP-A-8-996670 JP-A-10-97822 Japanese Patent Laid-Open No. 5-28881

しかしながら従来の操作装置は、瞬時に開放操作を行えるようにするため、複雑な構成を備えるとともに、部品点数が多くなり、製造コストが嵩むという問題があった。一方、コンデンサ開閉用開閉器など瞬時の開放操作が不要な用途においては、かかる機能は不要であり、より簡素な操作装置が求められていた。そこで、本発明は構造を簡略化し、部品点数を削減した開閉器の操作装置を提供することを目的とするものである。 However, the conventional operating device has a problem that the opening operation can be performed instantaneously, so that it has a complicated configuration, increases the number of parts, and increases the manufacturing cost. On the other hand, in applications that do not require an instantaneous opening operation such as a capacitor opening / closing switch, such a function is unnecessary, and a simpler operation device has been demanded. Accordingly, an object of the present invention is to provide a switch operating device with a simplified structure and a reduced number of parts.

上記の課題を解決するために、本発明は、電動機の駆動力でトグルレバーを回動させて、開閉器を開閉する開閉器の操作装置において、電動機の駆動力で、操作軸回りに回動する第１のトグルレバーと、前記操作軸回りに回転自在に取り付けられた第２のトグルレバーと、前記第１のトグルレバーと前記第２のトグルレバーの間に架け渡された引っ張りばねと、前記第２のトグルレバーに押圧されて回転するカムと、前記カムと一体に回転して主回路を機械的に開閉する主回路駆動軸と、前記カムと係合して、前記カムの動作によって前記電動機の正逆転を切り換えるマイクロスイッチを備えるものである。また、前記電動機と前記操作軸の間にギヤ機構を介したものである。 In order to solve the above-described problems, the present invention provides an operating device for a switch that opens and closes a switch by rotating a toggle lever by the driving force of the motor, and rotates around the operating shaft by the driving force of the motor. A first toggle lever, a second toggle lever rotatably mounted about the operation axis, a tension spring spanned between the first toggle lever and the second toggle lever, A cam that rotates by being pressed by the second toggle lever, a main circuit drive shaft that rotates integrally with the cam and mechanically opens and closes the main circuit, engages with the cam, and operates by the cam. A micro switch for switching between forward and reverse rotation of the electric motor is provided. Further, a gear mechanism is interposed between the electric motor and the operation shaft.

本発明によれば、開閉器の操作装置の構成を簡略化し、部品点数を削減することができるので、安価で信頼性の高い操作装置が実現できる効果がある。 According to the present invention, since the configuration of the switch operating device can be simplified and the number of parts can be reduced, there is an effect that an inexpensive and highly reliable operating device can be realized.

以下、本発明の具体的実施態様について、図に基づいて説明する。 Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の実施例を示す開閉器の操作装置の構成図であり、開路状態を示している。また、図２は同じ操作装置の構成図であり、閉路状態を示している。図において、１は電動機（図示せず）の出力軸であり、ギヤ機構２を介して操作軸３に駆動力を伝達する。操作軸３には第１のトグルレバー４が一体に取り付けられている。また、操作軸３回りに自由に回転できるように第２のトグルレバー５が取り付けられている。第１のトグルレバー４に取り付けたピン４ａと第２のトグルレバー５に取り付けたピン５ａの間には、引張りばね６が架け渡されている。７は図示しない主回路を機械的に開閉する主回路駆動軸であり、主回路駆動軸７にはカム８が一体に取り付けられ、駆動軸７回りに回転する。カム８には、ローラ８ａとローラ８ｂが取り付けられ、ローラ８ａ、８ｂは第２のトグルレバー５に当接する。９はマイクロスイッチであり、カム８によって動作する。また、マイクロスイッチ９はその動作により、モータ１の結線を正反対に切り替えるように接続されている。１０，１１は第１のトグルレバー４の動作を規制するストッパであり、１２，１３はカム８の動作を規制するストッパである。 FIG. 1 is a configuration diagram of a switch operating device showing an embodiment of the present invention, and shows an open circuit state. Moreover, FIG. 2 is a block diagram of the same operating device and shows a closed state. In the figure, reference numeral 1 denotes an output shaft of an electric motor (not shown), which transmits a driving force to an operation shaft 3 via a gear mechanism 2. A first toggle lever 4 is integrally attached to the operation shaft 3. A second toggle lever 5 is attached so as to freely rotate around the operation shaft 3. A tension spring 6 is stretched between the pin 4 a attached to the first toggle lever 4 and the pin 5 a attached to the second toggle lever 5. A main circuit drive shaft 7 mechanically opens and closes a main circuit (not shown). A cam 8 is integrally attached to the main circuit drive shaft 7 and rotates around the drive shaft 7. A roller 8 a and a roller 8 b are attached to the cam 8, and the rollers 8 a and 8 b are in contact with the second toggle lever 5. Reference numeral 9 denotes a micro switch which is operated by the cam 8. The microswitch 9 is connected so as to switch the connection of the motor 1 in the opposite direction by the operation. Reference numerals 10 and 11 are stoppers for restricting the operation of the first toggle lever 4, and reference numerals 12 and 13 are stoppers for restricting the operation of the cam 8.

次に、操作装置の動作を説明する。図１に示す開路状態において、投入指令により電動機（図示せず）の出力軸１が正回転すると、ギヤ機構２を介して前記電動機の駆動力が操作軸３に伝えられ、操作軸３が右回転し、操作軸３と一体に取り付けられた第１のトグルレバー４も右回転する。この時、カム８はストッパ１３に当接し、第２のトグルレバー５はカム８のローラ８ｂに当接してしているので、第２のトグルレバー５は右回転できない。したがって、第１のトグルレバー４と第２のトグルレバー５の間隔が開くので、引張りばね６が伸びる。更に、第１のトグルレバー４が右回転して、死点（破線で示した位置）を超えると引張りばね６の力によって第２のトグルレバー５が左回転し，ローラ８ａを押してカム８と主回路駆動軸７を右回転させて、主回路を投入するとともに、マイクロスイッチ９を動作させて、投入回路（正転回路）から前記電動機を切り離すと共に，開放回路（逆転回路）に前記電動機をつなぎかえる。以上のようにして、操作装置は図２に示す閉路状態になる。 Next, the operation of the controller device will be described. In the open circuit state shown in FIG. 1, when the output shaft 1 of the electric motor (not shown) is rotated forward by a closing command, the driving force of the electric motor is transmitted to the operating shaft 3 via the gear mechanism 2, and the operating shaft 3 is moved to the right. The first toggle lever 4 that rotates and is integrally attached to the operation shaft 3 also rotates to the right. At this time, since the cam 8 is in contact with the stopper 13 and the second toggle lever 5 is in contact with the roller 8b of the cam 8, the second toggle lever 5 cannot rotate clockwise. Therefore, since the space | interval of the 1st toggle lever 4 and the 2nd toggle lever 5 opens, the tension spring 6 is extended. Further, when the first toggle lever 4 rotates to the right and exceeds the dead point (position indicated by the broken line), the second toggle lever 5 rotates to the left by the force of the tension spring 6 and pushes the roller 8a to The main circuit drive shaft 7 is rotated to the right to turn on the main circuit, and the micro switch 9 is operated to disconnect the electric motor from the making circuit (forward rotation circuit) and to connect the electric motor to the open circuit (reverse rotation circuit). Reconnect. As described above, the operating device is in the closed state shown in FIG.

図２に示す閉路状態において、開放指令により前記電動機の出力軸１が逆回転すると、操作軸３が左回転し，操作軸３と一体の第１のトグルレバー４も左回転する。この時、カム８はストッパ１２に当接し、第２のトグルレバー５はカム８のローラ８ａに当接してしているので、第２のトグルレバー５は左回転できない。したがって、第１のトグルレバー４と第２のトグルレバー５の間隔が開くので、引張りばね６が伸びる。さらに、第１のトグルレバー４が左回転して、死点（破線で示した位置）を越えると引張りばね６の力によって第２のトグルレバー５が右回転し，ローラ８ａ，次いでローラ８ｂを押してカム８と主回路駆動軸７を左回転させて、主回路を開放する。また、カム８がマイクロスイッチ９から外れて，開放回路から前記電動機を切り離すと共に、投入回路に前記電動機をつなぎかえる。 In the closed state shown in FIG. 2, when the output shaft 1 of the motor is reversely rotated by an opening command, the operating shaft 3 rotates counterclockwise, and the first toggle lever 4 integrated with the operating shaft 3 also rotates counterclockwise. At this time, since the cam 8 is in contact with the stopper 12 and the second toggle lever 5 is in contact with the roller 8a of the cam 8, the second toggle lever 5 cannot rotate counterclockwise. Therefore, since the space | interval of the 1st toggle lever 4 and the 2nd toggle lever 5 opens, the tension spring 6 is extended. Further, when the first toggle lever 4 rotates counterclockwise and exceeds the dead point (the position shown by the broken line), the second toggle lever 5 rotates clockwise by the force of the tension spring 6, and the roller 8a and then the roller 8b are moved. The cam 8 and the main circuit drive shaft 7 are rotated counterclockwise to open the main circuit. Further, the cam 8 is detached from the microswitch 9 to disconnect the electric motor from the open circuit, and to connect the electric motor to the closing circuit.

本発明は、開閉器を電動機の駆動力で開閉する操作装置として有用である。 The present invention is useful as an operating device that opens and closes a switch with the driving force of an electric motor.

本発明の実施例を示す開閉器の操作装置の構成図であり、開路状態を示す図である。It is a block diagram of the operating device of the switch which shows the Example of this invention, and is a figure which shows an open circuit state. 同じ操作装置の構成図であり、閉路状態を示す図である。It is a block diagram of the same operating device, and is a figure which shows a closed circuit state.

Explanation of symbols

１（電動機の）出力軸、２ギヤ機構、３操作軸、４第１のトグルレバー、５第２のトグルレバー、６引っ張りばね、７主回路駆動軸、８カム、９マイクロスイッチ、１０，１１，１２，１３ストッパ 1 (electric motor) output shaft, 2 gear mechanism, 3 operating shaft, 4 first toggle lever, 5 second toggle lever, 6 tension spring, 7 main circuit drive shaft, 8 cam, 9 micro switch, 10, 11 , 12, 13 Stopper

Claims

In the operating device of the switch that opens and closes the switch by rotating the toggle lever with the driving force of the electric motor,
A first toggle lever that rotates about the operating axis by a driving force of the electric motor; a second toggle lever that is rotatably mounted about the operating axis; the first toggle lever; and the second toggle lever. A tension spring spanned between the levers, a cam that is pressed and rotated by the second toggle lever, a main circuit drive shaft that rotates integrally with the cam and mechanically opens and closes the main circuit; A switch operating device comprising a micro switch that engages with a cam and switches between forward and reverse rotation of the electric motor by the operation of the cam.

The switch operating device according to claim 1, wherein a gear mechanism is interposed between the electric motor and the operation shaft.