JPH0750114A - Switch driving mechanism - Google Patents
Switch driving mechanismInfo
- Publication number
- JPH0750114A JPH0750114A JP19231693A JP19231693A JPH0750114A JP H0750114 A JPH0750114 A JP H0750114A JP 19231693 A JP19231693 A JP 19231693A JP 19231693 A JP19231693 A JP 19231693A JP H0750114 A JPH0750114 A JP H0750114A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- switch
- drive
- circuit
- cut
- 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
- Mechanisms For Operating Contacts (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば電気自動車のメ
インモータ駆動用回路等の外部回路のスイッチングを行
うスイッチ駆動機構に係り、特にそのフェイルセーフ対
策に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch drive mechanism for switching an external circuit such as a main motor drive circuit of an electric vehicle, and more particularly to a fail-safe countermeasure for the switch drive mechanism.
【０００２】[0002]
【従来の技術】電気自動車のメインモータを駆動するた
めの電源は例えば４４０ボルトという高電圧であり、か
かるメインモータ駆動用回路のスイッチングは、車室内
の作動スイッチにて開閉される別回路に可動接点および
固定接点を配設してなるスイッチ駆動機構によって行わ
れる。この種のスイッチ駆動機構として、従来は、電圧
が１２ボルトの電源にて駆動されるモータを正逆回転さ
せることにより、スイッチ部たるメインスイッチの可動
接点を固定接点に接離させるようにしたものが一般的で
あり、この接離動作でメインモータ駆動用回路のオン・
オフ切換えを行っていた。2. Description of the Related Art A power supply for driving a main motor of an electric vehicle has a high voltage of, for example, 440 volts, and the switching of such a main motor driving circuit can be performed by a separate circuit opened and closed by an operation switch in a vehicle interior. This is performed by a switch driving mechanism provided with contacts and fixed contacts. As a switch drive mechanism of this type, conventionally, a movable contact of a main switch, which is a switch section, is brought into contact with and separated from a fixed contact by rotating a motor driven by a power source of a voltage of 12 volts forward and backward. Is generally used, and this contact / separation operation turns on / off the main motor drive circuit.
It was switching off.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記し
た従来のスイッチ駆動機構は、メインスイッチがオン状
態のときに何らかの原因で電源が切れた場合、このメイ
ンスイッチをオンからオフ状態へと切換えることができ
ないという不具合があった。すなわち、スイッチ駆動用
回路の電源が切れているのにメインモータ駆動用回路の
電源が切れないという事態が予想され、例えば点検等で
エンジンルームを開けたときに、４４０ボルトの高電圧
で作業者が誤って感電する危険性があった。However, in the above-mentioned conventional switch drive mechanism, when the main switch is in the ON state and the power is cut off for some reason, the main switch can be switched from the ON state to the OFF state. There was a problem that it could not be done. That is, it is expected that the power supply for the main motor drive circuit will not be cut off even though the power supply circuit for the switch drive has been cut off. There was a risk of accidental electric shock.
【０００４】本発明はこのような従来技術の課題に鑑み
てなされたもので、その目的は、スイッチ部がオン状態
のときに電源が切れると自動的に該スイッチ部がオフ状
態に切換えられる安全なスイッチ駆動機構を提供するこ
とにある。The present invention has been made in view of the above problems of the prior art, and an object thereof is to automatically switch the switch section to the off state when the power is turned off while the switch section is in the on state. To provide a simple switch drive mechanism.
【０００５】[0005]
【課題を解決するための手段】上記した本発明の目的
は、モータの駆動力でスイッチ部の可動接点を固定接点
に接触させることにより外部回路のオフからオンへのス
イッチングを行うスイッチ駆動機構において、上記モー
タに駆動されると上記可動接点を上記固定接点に向けて
駆動する接点駆動体と、上記可動接点を上記固定接点か
ら離間させるべく上記接点駆動体に弾発力を付与する復
帰ばねと、上記モータと電源を共有するソレノイドと、
通電時の上記ソレノイドに駆動されて上記接点駆動体に
係合し上記両接点を接触せしめた該接点駆動体を上記復
帰ばねの弾発力に抗して係止する係合部材、とを備える
ことによって達成される。SUMMARY OF THE INVENTION The above-described object of the present invention is a switch drive mechanism for switching an external circuit from off to on by bringing a movable contact of a switch part into contact with a fixed contact by a driving force of a motor. A contact drive body that drives the movable contact toward the fixed contact when driven by the motor, and a return spring that applies an elastic force to the contact drive body to separate the movable contact from the fixed contact. , A solenoid that shares power with the motor,
An engaging member that is driven by the solenoid when energized to engage with the contact drive body to bring the two contacts into contact with each other and to lock the contact drive body against the elastic force of the return spring. To be achieved.
【０００６】[0006]
【作用】上記構成要素を備えたスイッチ駆動機構は、通
電時に、モータの駆動力が伝達される接点駆動体により
可動接点を移動させて固定接点に接触させた後、ソレノ
イドに駆動される係合部材で該接点駆動体を係止するこ
とにより両接点を接触状態に保つことができ、また、こ
うしてスイッチ部がオン状態のときに電源が切れると、
ソレノイドへの通電が遮断されて接点駆動体に対する係
合部材の係合を解除することができるので、可動接点を
固定接点から離間させるべく接点駆動体を押し込んでい
る復帰ばねの弾発力によって該接点駆動体を駆動し、ス
イッチ部を自動的にオフ状態へと切換えることができ
る。In the switch driving mechanism having the above-described components, when the power is supplied, the contact driving body to which the driving force of the motor is transmitted moves the movable contact to bring it into contact with the fixed contact, and then the engagement driven by the solenoid. By locking the contact drive member with a member, both contacts can be kept in contact with each other, and when the power is cut off while the switch is in the ON state,
Since the energization of the solenoid can be cut off to disengage the engagement member from the contact drive body, the elastic force of the return spring pushing the contact drive body to separate the movable contact from the fixed contact causes It is possible to drive the contact driving body and automatically switch the switch unit to the off state.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１は、電気自動車のメインモータ駆動用回路の
スイッチングを行うためのスイッチ駆動機構を示す本発
明の第１実施例で、スイッチ駆動用回路がオフ状態のと
きの機構説明図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a first embodiment of the present invention showing a switch drive mechanism for switching a main motor drive circuit of an electric vehicle, and is a mechanism explanatory diagram when the switch drive circuit is in an off state.
【０００８】同図において、符号１はスイッチ駆動用回
路のＤＣ１２ボルトの電源、２はこのスイッチ駆動用回
路を開閉するための車室内の作動スイッチ、３は電源１
により駆動されるモータ、４はメインモータ駆動用回路
１５のスイッチングを行うメインスイッチで、このメイ
ンスイッチ４は可動接点４ａと固定接点４ｂとを接離可
能に対向させて構成されている。５は接点ばね６を介し
て可動接点４ａを保持し矢印Ａ方向に沿って回動可能な
接点駆動レバー、７は可動接点４ａを固定接点４ｂから
離間させるべく接点駆動レバー５に弾発力を付与する復
帰ばね、８は電源１にモータ３とは並列に接続されて通
電時に可動鉄心８ａを図示左向きに引き寄せるソレノイ
ド、９はこのソレノイド８の可動鉄心８ａを図示右向き
に引っ張るリセットばね、１０はモータ３によって回転
駆動されるとともに一端部を可動鉄心８ａに固定して矢
印Ｂ方向に移動可能なウォームギアで、このウォームギ
ア１０は通電時のソレノイド８の可動鉄心８ａに駆動さ
れて図示左向きに移動すると接点駆動レバー５のギア部
５ａと歯合するようになっている。また、１１はウォー
ムギア１０を図示下向きに弾性付勢するリミットばね、
１２はモータ３と直列に接続されたリミットスイッチ、
１３はウォームギア１０に固定されてリミットスイッチ
１２を開閉するアクチュエータ、１４は接点駆動レバー
５が図示時計回りの向きに所定量回転するとこれに当接
して位置規制するレバーストッパである。なお、このス
イッチ駆動機構の外部回路たるメインモータ駆動用回路
１５には、ＤＣ４４０ボルトの高圧電源１６と、負荷と
してのメインモータ１７と、上記固定接点４ｂに接続さ
れた入力側および出力側の各端子１８とが具備されてい
る。In the figure, reference numeral 1 is a DC 12 volt power source for a switch driving circuit, 2 is an operating switch for opening and closing the switch driving circuit, and 3 is a power source 1.
The motor 4 driven by the main switch 4 is a main switch for switching the main motor driving circuit 15, and the main switch 4 is constituted by the movable contact 4a and the fixed contact 4b facing each other so that they can come into contact with and separate from each other. Reference numeral 5 denotes a contact drive lever that holds the movable contact 4a via a contact spring 6 and is rotatable in the direction of arrow A. Reference numeral 7 gives an elastic force to the contact drive lever 5 to separate the movable contact 4a from the fixed contact 4b. A return spring 8 is applied to the power source 1 in parallel with the motor 3 and pulls the movable iron core 8a leftward in the drawing when energized. 9 is a reset spring that pulls the movable iron core 8a of the solenoid 8 rightward in the drawing. A worm gear that is rotationally driven by the motor 3 and has one end fixed to the movable iron core 8a and is movable in the direction of arrow B. When the worm gear 10 is driven by the movable iron core 8a of the solenoid 8 when energized, it moves leftward in the drawing. It is adapted to mesh with the gear portion 5a of the contact drive lever 5. Further, 11 is a limit spring that elastically biases the worm gear 10 downward in the drawing,
12 is a limit switch connected in series with the motor 3,
Reference numeral 13 is an actuator fixed to the worm gear 10 to open and close the limit switch 12, and reference numeral 14 is a lever stopper which comes into contact with the contact drive lever 5 when the contact drive lever 5 rotates in the clockwise direction in the figure by a predetermined amount and regulates its position. A main motor drive circuit 15 which is an external circuit of the switch drive mechanism includes a high-voltage power supply 16 of 440 VDC, a main motor 17 as a load, and an input side and an output side connected to the fixed contact 4b. And terminals 18 are provided.
【０００９】このように構成されるスイッチ駆動機構
は、車室内の作動スイッチ２をオンにして回路を閉じる
と電源１の１２ボルトの電圧がモータ３およびソレノイ
ド８に印加されるので、可動鉄心８ａに駆動されて図示
左向きに引き寄せられるウォームギア１０が接点駆動レ
バー５のギア部５ａと歯合し、さらにモータ３が始動し
てウォームギア１０を回転駆動することから、このウォ
ームギア１０の回転に伴い接点駆動レバー５が復帰ばね
７の弾発力に抗して図示時計回りの向きに回転し始め
る。そのため、接点駆動レバー５が所定量回転した時点
で、可動接点４ａが固定接点４ｂに接触してメインスイ
ッチ４がオフからオン状態に切換えられ、さらに可動接
点４ａは接点ばね６に付勢されるので固定接点４ｂに圧
接した状態となる。そして、こうして両接点４ａ，４ｂ
が確実に接触すると、接点駆動レバー５がレバーストッ
パ１４に当接して位置規制されるが、ウォームギア１０
はその後も回転し続けるので、リミットばね１１の弾発
力に抗してウォームギア１０が図示上向きに移動し始
め、このウォームギア１０に追動してアクチュエータ１
３が所定位置まで移動すると、リミットスイッチ１２が
閉から開状態に切換えられてモータ３への通電が遮断さ
れる。したがって、ウォームギア１０はその位置で停止
して接点駆動レバー５に係止され、同様に接点駆動レバ
ー５は両接点４ａ，４ｂを接触させた状態のままウォー
ムギア１０に係止され、メインスイッチ４はオン状態に
保持される。In the switch driving mechanism constructed as described above, when the operation switch 2 in the vehicle compartment is turned on and the circuit is closed, the voltage of 12 V of the power source 1 is applied to the motor 3 and the solenoid 8, so that the movable iron core 8a. The worm gear 10 driven to the left in the drawing meshes with the gear portion 5a of the contact drive lever 5, and the motor 3 is started to drive the worm gear 10 to rotate. Therefore, the contact drive is performed as the worm gear 10 rotates. The lever 5 begins to rotate in the clockwise direction in the figure against the elastic force of the return spring 7. Therefore, when the contact drive lever 5 rotates by a predetermined amount, the movable contact 4a contacts the fixed contact 4b to switch the main switch 4 from the off state to the on state, and the movable contact 4a is biased by the contact spring 6. Therefore, the fixed contact 4b is pressed. And, in this way, both contacts 4a, 4b
When the contact drive lever 5 comes into contact with the lever stopper 14, the contact drive lever 5 comes into contact with the lever stopper 14 and its position is regulated.
Continues to rotate thereafter, the worm gear 10 begins to move upward in the figure against the elastic force of the limit spring 11, and follows the worm gear 10 to follow the actuator 1
When 3 moves to a predetermined position, the limit switch 12 is switched from the closed state to the open state, and the power supply to the motor 3 is cut off. Therefore, the worm gear 10 stops at that position and is locked by the contact drive lever 5, and similarly, the contact drive lever 5 is locked by the worm gear 10 with both contacts 4a and 4b in contact with each other, and the main switch 4 becomes Holds on.
【００１０】また、メインスイッチ４がオン状態のとき
に作動スイッチ２をオフにするなどして電源１を切る
と、ソレノイド８への通電が遮断されるので可動鉄心８
ａはリセットばね９により図示右向きに引っ張られ、そ
のため可動鉄心８ａに駆動されるウォームギア１０が接
点駆動レバー５のギア部５ａから離脱して、復帰ばね７
の弾発力で接点駆動レバー５が図示反時計回りの向きに
回転し始め、よって可動接点４ａが固定接点４ｂから離
間してメインスイッチ４はオフ状態へと切換えられる。
一方、接点駆動レバー５から離脱したウォームギア１０
は、リミットばね１１の弾発力により図示下向きに押し
込まれて初期位置まで戻り、このウォームギア１０に追
動してアクチュエータ１３も初期位置まで戻るので、リ
ミットスイッチ１２は開から閉状態に切換えられる。When the power switch 1 is turned off by turning off the operation switch 2 while the main switch 4 is on, the solenoid 8 is de-energized, so that the movable core 8
a is pulled rightward in the figure by the reset spring 9, so that the worm gear 10 driven by the movable iron core 8a is disengaged from the gear portion 5a of the contact drive lever 5, and the return spring 7 is released.
The contact driving lever 5 starts to rotate in the counterclockwise direction in the figure by the elastic force of, so that the movable contact 4a is separated from the fixed contact 4b and the main switch 4 is turned off.
On the other hand, the worm gear 10 separated from the contact drive lever 5
Is pushed downward in the figure by the elastic force of the limit spring 11 to return to the initial position, and the actuator 13 also returns to the initial position following the worm gear 10, so the limit switch 12 is switched from the open state to the closed state.
【００１１】上記したスイッチ駆動機構は、車室内の作
動スイッチ２をオン・オフ操作することによりメインス
イッチ４のオン・オフ切換えを行うというものである
が、メインスイッチ４がオン状態のときに意図せざる何
らかの原因（例えば放電）で電源１が切れても、ソレノ
イド８への通電が遮断されることから接点駆動レバー５
とウォームギア１０との係合が解除され、そのため復帰
ばね７の弾発力で可動接点４ａを固定接点４ｂから離間
させることができるので、メインスイッチ４は自動的に
オフ状態へと切換えられる。すなわち、スイッチ駆動用
回路の電源１が切れているときには必ず、メインモータ
駆動用回路１５の高圧電源１６も切れていることになる
ので、誤って感電する危険性が少なくなって安全性が向
上する。The switch drive mechanism described above switches the main switch 4 on and off by turning on and off the operation switch 2 in the passenger compartment. However, it is intended when the main switch 4 is in the on state. Even if the power supply 1 is cut off for some reason (for example, discharge), the contact drive lever 5 is disconnected from the power supply to the solenoid 8.
The worm gear 10 is disengaged from the fixed contact 4b by the elastic force of the return spring 7, so that the main switch 4 is automatically turned off. That is, when the power supply 1 for the switch drive circuit is cut off, the high-voltage power supply 16 for the main motor drive circuit 15 is always cut off, so that the risk of accidental electric shock is reduced and safety is improved. .
【００１２】図２，３は、電気自動車のメインモータ駆
動用回路のスイッチングを行うためのスイッチ駆動機構
を示す本発明の第２実施例で、図２はスイッチ駆動用回
路がオフ状態のときの機構説明図、図３はスイッチ駆動
用回路がオン状態のときの機構説明図である。2 and 3 show a second embodiment of the present invention showing a switch drive mechanism for switching the main motor drive circuit of an electric vehicle. FIG. 2 shows the switch drive circuit when the switch drive circuit is off. FIG. 3 is a mechanism explanatory diagram, and FIG. 3 is a mechanism explanatory diagram when the switch driving circuit is in the ON state.
【００１３】図２，３において、符号２０はスイッチ駆
動用回路のＤＣ１２ボルトの電源、２１はこのスイッチ
駆動用回路を開閉するための車室内の作動スイッチ、２
２は電源２０により駆動されるモータ、２３はこのモー
タ２２の駆動力を伝達するピニオンギア、２４はメイン
モータ駆動用回路１５のスイッチングを行うメインスイ
ッチで、このメインスイッチ２４は可動接点２４ａと固
定接点２４ｂとを接離可能に対向させて構成されてお
り、矢印Ｃ方向に回動可能でローラ２５と接点ばね２６
および戻しばね２７とを付設した支持レバー２８が可動
接点２４ａを保持し、メインモータ駆動用回路１５の入
力側および出力側の各端子１８が固定接点２４ｂに接続
されている。２９はピニオンギア２３に歯合するラック
ギア３０を付設して矢印Ｄ方向に移動可能な接点駆動ス
ライダ、３１は可動接点２４ａを固定接点２４ｂから離
間させるべく接点駆動スライダ２９に弾発力を付与する
復帰ばね、３２は電源２０にモータ２２とは並列に接続
されたソレノイド、３３はこのソレノイド３２の可動鉄
心３２ａに連結されているラッチ用カム、３４はモータ
２２と直列に接続されたリミットスイッチで、接点駆動
スライダ２９には、上記ローラ２５を介して支持レバー
２８を図示時計回りの向きに駆動するためのカム部２９
ａと、ラッチ用カム３３を係脱させるための係合孔２９
ｂと、リミットスイッチ３４を開閉するための突起部２
９ｃとが形成されている。なお、図中の符号１６はメイ
ンモータ駆動用回路１５のＤＣ４４０ボルトの高圧電
源、１７は該回路１５の負荷であるメインモータ１７を
示している。In FIGS. 2 and 3, reference numeral 20 is a DC 12 volt power source for the switch driving circuit, 21 is an operation switch for opening and closing the switch driving circuit, and 2
2 is a motor driven by the power source 20, 23 is a pinion gear for transmitting the driving force of the motor 22, 24 is a main switch for switching the main motor driving circuit 15, and the main switch 24 is fixed to the movable contact 24a. The contact point 24b is opposed to the contact point 24b so that the contact point 24b can be brought into contact with and separated from the contact point 24b.
A support lever 28 provided with a return spring 27 holds the movable contact 24a, and the input-side and output-side terminals 18 of the main motor driving circuit 15 are connected to the fixed contact 24b. Reference numeral 29 is a contact drive slider that is provided with a rack gear 30 that meshes with the pinion gear 23 and is movable in the direction of arrow D. Reference numeral 31 applies an elastic force to the contact drive slider 29 to separate the movable contact 24a from the fixed contact 24b. A return spring, 32 is a solenoid connected to the power source 20 in parallel with the motor 22, 33 is a latching cam connected to the movable iron core 32a of the solenoid 32, and 34 is a limit switch connected in series with the motor 22. The contact drive slider 29 has a cam portion 29 for driving the support lever 28 in the clockwise direction in the drawing via the roller 25.
a and an engagement hole 29 for engaging and disengaging the latch cam 33
b and the protrusion 2 for opening and closing the limit switch 34
9c are formed. Reference numeral 16 in the figure denotes a high voltage power supply of DC 440 V of the main motor driving circuit 15, and 17 denotes a main motor 17 which is a load of the circuit 15.
【００１４】上記の如くに構成されるスイッチ駆動機構
は、図２の状態で車室内の作動スイッチ２１をオンにし
て回路を閉じると、電源２０の電圧がモータ２２および
ソレノイド３２に印加されるので、可動鉄心３２ａを介
して図示下向きの吸引力がラッチ用カム３３に作用する
とともに、ピニオンギア２３の回転に伴いラックギア３
０と一体の接点駆動スライダ２９が復帰ばね３１の弾発
力に抗して図示左向きに移動し始め、カム部２９ａがロ
ーラ２５を介して支持レバー２８を図示時計回りの向き
に押し上げる。そのため、接点駆動スライダ２９が所定
量移動した時点で、可動接点２４ａが固定接点２４ｂに
接触してメインスイッチ２４がオフからオン状態に切換
えられ、さらに可動接点２４ａは接点ばね２６に付勢さ
れるので固定接点２４ｂに圧接した状態となる。こうし
て両接点２４ａ，２４ｂが確実に接触するまで接点駆動
スライダ２９が移動すると、まずラッチ用カム３３が係
合孔２９ｂ内に落ち込み、次いで突起部２９ｃがリミッ
トスイッチ３４に当接して該スイッチ３４を閉から開状
態に切換え、その結果モータ２２への通電が遮断されて
接点駆動スライダ２９は復帰ばね３１に押し返される
が、ラッチ用カム３３が係合孔２９ｂ内に挿入されてい
るので該スライダ２９はすぐに位置規制され、よって両
接点２４ａ，２４ｂを接触させた状態のまま支持レバー
２８も位置規制され、図３に示すようにメインスイッチ
２４はオン状態に保持される。In the switch drive mechanism constructed as described above, the voltage of the power source 20 is applied to the motor 22 and the solenoid 32 when the operation switch 21 in the vehicle compartment is turned on and the circuit is closed in the state of FIG. A downward attraction force acts on the latch cam 33 via the movable iron core 32a, and the rack gear 3 rotates as the pinion gear 23 rotates.
The contact drive slider 29 integrated with 0 starts moving leftward in the figure against the elastic force of the return spring 31, and the cam portion 29a pushes up the support lever 28 in the clockwise direction in the figure via the roller 25. Therefore, when the contact drive slider 29 moves by a predetermined amount, the movable contact 24a contacts the fixed contact 24b, the main switch 24 is switched from the off state to the on state, and the movable contact 24a is biased by the contact spring 26. Therefore, the fixed contact 24b is pressed. When the contact drive slider 29 moves in this manner until both contacts 24a, 24b are surely brought into contact with each other, the latching cam 33 first falls into the engaging hole 29b, and then the projection 29c abuts the limit switch 34 so that the switch 34 is moved. Switching from the closed state to the open state, and as a result, the energization of the motor 22 is cut off and the contact drive slider 29 is pushed back by the return spring 31, but since the latching cam 33 is inserted in the engagement hole 29b, the slider is driven. The position of the support lever 28 is immediately regulated, and thus the position of the support lever 28 is also regulated while the contacts 24a and 24b are in contact with each other, and the main switch 24 is held in the ON state as shown in FIG.
【００１５】また、メインスイッチ２４がオン状態のと
きに作動スイッチ２１をオフにするなどして電源２０を
切ると、ソレノイド３２への通電が遮断されるのでラッ
チ用カム３３に作用していた図示下向きの吸引力がなく
なり、接点駆動スライダ２９は復帰ばね３１の弾発力で
図３の状態から右向きに押し込まれる。そのため、ラッ
チ用カム３３が係合孔２９ｂ内から強制的に押し上げら
れて、該カム３３と接点駆動スライダ２９との係合が解
除されるとともに、カム部２９ａの移動に伴ってローラ
２５に対する押し上げ量が減じることから、支持レバー
２８が戻しばね２７の弾発力で図３の状態から反時計回
りの向きに回転し始め、よって可動接点２４ａが固定接
点２４ｂから離間してメインスイッチ２４はオフ状態へ
と切換えられる。また、接点駆動スライダ２９が復帰ば
ね３１の弾発力で図２に示す初期位置へと戻る過程で、
突起部２９ｃがリミットスイッチ３４から離間するの
で、該スイッチ３４は開から閉状態に切換えられる。Further, when the power switch 20 is turned off by turning off the actuating switch 21 while the main switch 24 is in the on state, the solenoid 32 is de-energized so that it acts on the latching cam 33. The downward attraction force disappears, and the contact drive slider 29 is pushed rightward from the state of FIG. 3 by the elastic force of the return spring 31. Therefore, the latching cam 33 is forcibly pushed up from the inside of the engaging hole 29b, the engagement between the cam 33 and the contact drive slider 29 is released, and the latching cam 33 is pushed up against the roller 25 as the cam portion 29a moves. Since the amount decreases, the support lever 28 starts to rotate counterclockwise from the state of FIG. 3 by the elastic force of the return spring 27, so that the movable contact 24a is separated from the fixed contact 24b and the main switch 24 is turned off. It is switched to the state. Further, in the process in which the contact drive slider 29 returns to the initial position shown in FIG. 2 by the elastic force of the return spring 31,
Since the protrusion 29c is separated from the limit switch 34, the switch 34 is switched from the open state to the closed state.
【００１６】したがって、この第２実施例も前記第１実
施例と同様に、メインスイッチ２４がオン状態のときに
何らかの原因で電源２０が切れると、ソレノイド３２へ
の通電が遮断されて接点駆動スライダ２９とラッチ用カ
ム３３との係合が解除されることから、復帰ばね３１や
戻しばね２７の弾発力でメインスイッチ２４を自動的に
オフ状態へと切換えることができ、よってスイッチ駆動
用回路の電源２０が切れているときには必ずメインモー
タ駆動用回路１５の高圧電源１６も切れていることにな
る。Therefore, also in the second embodiment, as in the first embodiment, if the power supply 20 is cut off for some reason while the main switch 24 is in the ON state, the solenoid 32 is de-energized and the contact drive slider. Since the engagement between 29 and the latch cam 33 is released, the main switch 24 can be automatically switched to the off state by the elastic force of the return spring 31 and the return spring 27, and thus the switch drive circuit. When the power source 20 is turned off, the high voltage power source 16 of the main motor drive circuit 15 is always turned off.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によるスイ
ッチ駆動機構は、通電時にソレノイドに駆動される係合
部材で接点駆動体を係止することにより、スイッチ部の
可動接点と固定接点とを接触状態に保ち、かつ、こうし
てスイッチ部がオン状態のときに何らかの原因で電源が
切れるとソレノイドへの通電が遮断されて接点駆動体に
対する係合部材の係合が解除されることから、復帰ばね
の弾発力で該接点駆動体を駆動してスイッチ部を自動的
にオフ状態へと切換えることができるというものなの
で、スイッチ駆動用回路の電源が切れているときには必
ず、スイッチングの対象となる外部回路の高圧電源も切
れていることになり、そのため誤って感電する危険性が
少なく安全なスイッチ駆動機構を提供することができ
る。As described above, in the switch drive mechanism according to the present invention, the movable contact and the fixed contact of the switch portion are separated by locking the contact driving body with the engagement member driven by the solenoid when energized. If the power is cut off for some reason while the contact state is maintained and the switch section is in the on state, the solenoid is de-energized and the engagement member is disengaged from the contact drive body. The contact drive body can be driven by the resilience of the switch to automatically switch the switch section to the OFF state. Therefore, when the power supply for the switch drive circuit is cut off, the external target The high-voltage power supply of the circuit is also cut off, so that there is less risk of accidental electric shock, and a safe switch drive mechanism can be provided.
【図１】本発明の第１実施例たるスイッチ駆動機構の回
路がオフ状態のときの機構説明図である。FIG. 1 is a mechanism explanatory view when a circuit of a switch drive mechanism according to a first embodiment of the present invention is in an off state.
【図２】本発明の第２実施例たるスイッチ駆動機構の回
路がオフ状態のときの機構説明図である。FIG. 2 is a mechanism explanatory view when a circuit of a switch drive mechanism according to a second embodiment of the present invention is in an off state.
【図３】図２に示すスイッチ駆動機構の回路がオン状態
のときの機構説明図である。FIG. 3 is a mechanism explanatory diagram when a circuit of the switch driving mechanism shown in FIG. 2 is in an ON state.
１，２０ 電源 ２，２１ 作動スイッチ ３，２２ モータ ４，２４ メインスイッチ（スイッチ部） ４ａ，２４ａ 可動接点 ４ｂ，２４ｂ 固定接点 ５ 接点駆動レバー（接点駆動体） ５ａ ギア部 ６，２６ 接点ばね ７，３１ 復帰ばね ８，３２ ソレノイド １０ ウォームギア（係合部材） １２，３４ リミットスイッチ １５ メインモータ駆動用回路（外部回路） １６ 高圧電源 ２７ 戻しばね ２８ 支持レバー ２９ 接点駆動スライダ（接点駆動体） ２９ａ カム部 ２９ｂ 係合孔 ３０ ラックギア ３３ ラッチ用カム（係合部材） 1,20 Power supply 2,21 Operation switch 3,22 Motor 4,24 Main switch (switch part) 4a, 24a Moving contact 4b, 24b Fixed contact 5 Contact drive lever (contact driver) 5a Gear part 6,26 Contact spring 7 , 31 Return spring 8, 32 Solenoid 10 Worm gear (engagement member) 12, 34 Limit switch 15 Main motor drive circuit (external circuit) 16 High voltage power supply 27 Return spring 28 Support lever 29 Contact drive slider (contact drive body) 29a Cam Part 29b Engagement hole 30 Rack gear 33 Latch cam (engagement member)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高須 英三 東京都大田区雪谷大塚町１番７号 アルプ ス電気株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eizo Takasu 1-7 Yukiya Otsukacho, Ota-ku, Tokyo Alps Electric Co., Ltd.
Claims (1)
を固定接点に接触させることにより外部回路のオフから
オンへのスイッチングを行うスイッチ駆動機構におい
て、上記モータに駆動されると上記可動接点を上記固定
接点に向けて駆動する接点駆動体と、上記可動接点を上
記固定接点から離間させるべく上記接点駆動体に弾発力
を付与する復帰ばねと、上記モータと電源を共有するソ
レノイドと、通電時の上記ソレノイドに駆動されて上記
接点駆動体に係合し上記両接点を接触せしめた該接点駆
動体を上記復帰ばねの弾発力に抗して係止する係合部材
とを備えたことを特徴とするスイッチ駆動機構。1. A switch drive mechanism for switching an external circuit from off to on by bringing a movable contact of a switch part into contact with a fixed contact by a driving force of a motor, and when the motor drives the movable contact, A contact drive body that is driven toward the fixed contact, a return spring that applies an elastic force to the contact drive body to separate the movable contact from the fixed contact, a solenoid that shares a power source with the motor, and an energization. And an engaging member that engages with the contact drive body to bring the two contacts into contact with each other when the contact drive body is locked against the elastic force of the return spring. Switch drive mechanism characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19231693A JP2957389B2 (en) | 1993-08-03 | 1993-08-03 | Switch drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19231693A JP2957389B2 (en) | 1993-08-03 | 1993-08-03 | Switch drive mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0750114A true JPH0750114A (en) | 1995-02-21 |
| JP2957389B2 JP2957389B2 (en) | 1999-10-04 |
Family
ID=16289261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19231693A Expired - Fee Related JP2957389B2 (en) | 1993-08-03 | 1993-08-03 | Switch drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2957389B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500671A (en) * | 2013-10-19 | 2014-01-08 | 国家电网公司 | Indoor high-voltage electric grounding switch |
-
1993
- 1993-08-03 JP JP19231693A patent/JP2957389B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500671A (en) * | 2013-10-19 | 2014-01-08 | 国家电网公司 | Indoor high-voltage electric grounding switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2957389B2 (en) | 1999-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102609599B1 (en) | A vehicle's parking lock gear mechanism and how to operate the park lock gear mechanism | |
| US5181592A (en) | Shift lever interlock system | |
| CN107916847B (en) | Power closed latch assembly including tie pull mechanism with ratchet retention | |
| US20060028029A1 (en) | Single actuator power close latch mechanism with failsafe | |
| JP2002147089A (en) | Lock controller of slide door | |
| US11542730B2 (en) | Closure latch assembly with a power release mechanism and motor control system | |
| US6304008B1 (en) | Electronic device having auto-off or auto-on/off function | |
| JPH0750114A (en) | Switch driving mechanism | |
| JPS5810550B2 (en) | Central control device for locking and/or closing automobile opening/closing members | |
| JPH0742909B2 (en) | Switch control device for starting motor | |
| JP2003165416A (en) | Lock control device | |
| JPH10148051A (en) | Door lock drive device | |
| US11965596B2 (en) | Parking lock actuation system with electromechanical locking function, drive device, and actuation method | |
| JP3401621B2 (en) | Spring drive for high-speed electric open / close switch | |
| KR100188654B1 (en) | Apparatus for operating door for a car | |
| JPS5953233A (en) | Control device for power take-off device in automobile | |
| US20050121982A1 (en) | Multiple function electronic drive | |
| JPS5937390Y2 (en) | Solenoid type accelerator interlock control circuit that works with automatic door | |
| US3614686A (en) | Multiposition magnetically held fail-safe switch | |
| KR100198080B1 (en) | Door open/close control circuit | |
| JPS61261587A (en) | Motor type door lock system | |
| JPH02157379A (en) | Mechanism and method for door lock | |
| JPH09287337A (en) | Door lock device | |
| JP2514489Y2 (en) | Vehicle door lock device | |
| JP2691451B2 (en) | Vehicle locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990706 |
|
| LAPS | Cancellation because of no payment of annual fees |