JP2004195565A

JP2004195565A - Interlocking system of transmitter, receiver and dust collector

Info

Publication number: JP2004195565A
Application number: JP2002364292A
Authority: JP
Inventors: Yoshinori Shibata; 美徳柴田; Hiroaki Ichikawa; 博明市川; Mitsunori Sakai; 光徳堺
Original assignee: Makita Corp
Current assignee: Makita Corp
Priority date: 2002-12-16
Filing date: 2002-12-16
Publication date: 2004-07-15
Anticipated expiration: 2022-12-16
Also published as: JP4550357B2

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly use even a power tool having high electric power consumption. <P>SOLUTION: An adapter 13 insertable into an electric outlet of a commercial power source is installed on a power cord of a circular saw 7. This adapter 13 is provided with a current detecting part 20 having a current transformer 22 for detecting power supply of a motor driving circuit 17 of the circular saw 7 and a transmission part 21 having a transmission antenna 23 and transmitting an operation signal or a stopping signal by a detecting result in the current detecting part 20. While, a dust collector 1 is provided with a receiving part 28 having a receiving antenna 27 for receiving a signal from the adapter 13 and a driving part 29 for opening-closing a switch 30 of a motor driving circuit 25 according to a received signal of the receiving part 28. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、例えばマルノコ等の電動工具に用いられる送信機と、集塵機に用いられる受信機と、電動工具の作動及び作動停止に伴って自動的に集塵機を作動及び作動停止させる集塵機の連動システムとに関する。
【０００２】
【従来の技術】
マルノコやグラインダ、カンナ等の電動工具を使用する場合、粉塵や切削屑が排出されるため、電動工具をホースを介して集塵機と接続し、集塵機を作動させながら作業を行うことで、粉塵等を集塵機に直接吸引させることが多い。
このような場合、電動工具と集塵機との電源スイッチを作業開始と停止との度にいちいち別個に操作するのは煩わしく、作業性を低下させる。よって、特許文献１に開示のように、交流電源に接続され、電動工具接続用のレセプタクルと、集塵機接続用のレセプタクルと、交流電源と電動工具間の回路内の通電を検出する電流検出部と、電流検出部の検出の有無により交流電源と集塵機間の回路内の双方向スイッチング素子をＯＮ／ＯＦＦさせる制御回路部とを備えた電動工具用併用機器制御装置を用いて、電動工具の電源スイッチのＯＮ／ＯＦＦに集塵機のＯＮ／ＯＦＦを連動させて使い勝手の向上を図る発明が知られている。
【０００３】
【特許文献１】
特開昭６３−１９１５８０号公報
【０００４】
【発明が解決しようとする課題】
しかし、上記併用機器制御装置においては、電動工具と集塵機とが共に接続されるため、消費電力が高い大型マルノコやスライドマルノコでは使用できないし、交流式の電動工具専用であるから、バッテリーパックを装着する充電式の電動工具には採用できない。また、電動工具、集塵機、併用機器制御装置何れもが交流電源のため、集塵機の使用の度にいちいち併用機器制御装置を用意して接続する作業も面倒である上、これらの電源コードが作業の邪魔になるおそれもあった。
【０００５】
そこで、本発明は、消費電力が高い電動工具や充電式の電動工具でも支障なく使用でき、操作性や作業性を損なうこともなく、使い勝手に優れる連動システム用の送信機及び受信機と、これらを用いた集塵機の連動システムとを提供することを目的としたものである。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の発明は、電動工具へ着脱可能で、装着状態で電動工具の作動を検出する作動検出手段と、その作動検出手段による検出結果に基づいて、運転または停止等の信号を送信する無線送信手段とを備えてなる送信機としたものである。
請求項２に記載の発明は、請求項１の目的に加えて、電動工具の作動検出を容易に行うために、作動検出手段を、電動工具のモータへの通電の有無を検出する電流検出手段としたものである。
請求項３に記載の発明は、請求項１または２の目的に加えて、電動工具が、電源コードを備えた交流式のものにあって、送信機を連動システムにより好適な構成とするために、送信機を、電源コードのプラグを差し込み可能なコンセントと、交流電源のコンセントに差し込み可能なプラグとを備えて、電源コードに装着可能としたものである。
請求項４に記載の発明は、請求項１または２の目的に加えて、電動工具が、バッテリーパックをハウジングに装着する充電式のものにあって、送信機を連動システムにより好適な構成とするために、送信機を、バッテリーパックの装着面と、ハウジングの装着面と同じ形態の装着面を夫々備えて、バッテリーパックとハウジングとの間に装着可能としたものである。
【０００７】
上記目的を達成するために、請求項５に記載の発明は、集塵機に設けられ、請求項１乃至４の何れかに記載の送信機の無線送信手段からの信号を受信する無線受信手段と、その無線受信手段で受信した信号に基づいて、集塵機のモータ駆動回路の通電を制御する通電制御手段とを備えてなる受信機としたものである。
請求項６に記載の発明は、請求項５の目的に加えて、集塵機が、電源コードを備えた交流式のものにあって、受信機を連動システムにより好適な構成とするために、受信機を、電源コードのプラグを差し込み可能なコンセントと、交流電源のコンセントに差し込み可能なプラグとを備えて、電源コードに装着可能としたものである。
請求項７に記載の発明は、請求項５の目的に加えて、集塵機が、バッテリーパックをハウジングに装着する充電式のものにあって、受信機を連動システムにより好適な構成とするために、受信機を、バッテリーパックの装着面と、ハウジングの装着面と同じ形態の装着面を夫々備えて、バッテリーパックとハウジングとの間に装着可能としたものである。
【０００８】
そして、上記目的を達成するために、請求項８に記載の発明は、請求項１乃至４の何れかに記載の送信機を電動工具に装着する一方、その電動工具とホースを介して接続される集塵機に、請求項５乃至７の何れかに記載の受信機を設けて、集塵機の作動及び作動停止を電動工具の作動及び作動停止に連動可能としてなる集塵機の連動システムとしたものである。
【０００９】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
《形態１》
図１は、電動工具としてマルノコを使用した集塵機の連動システムの説明図で、集塵機１は、タンク２の上部に、ＡＣモータ及び吸込ファンを内蔵した本体３を載置してなる。タンク２には電源コード４が接続されており、ここから交流電源を得てＡＣモータを駆動させると、タンク２の吸込口５に接続したホース６から粉塵等と共に外気を吸込み、タンク２内を通過させて本体３から排気する。タンク２内と本体３との間にはフィルタが介在されていることから、吸い込まれた粉塵等は、フィルタで捕捉されてタンク２内に貯留する。
【００１０】
７はマルノコで、集塵機１と同じく交流電源を得る電源コード９が接続される本体８には、ＡＣモータの駆動によって回転する円盤状の鋸刃１１が備えられる。鋸刃１１を覆うブレードケース１２には、集塵機１のホース６が接続されている。
ここで、電源コード９のプラグ１０は、送信機となるアダプタ１３を介して交流電源のコンセントに差し込まれる。このアダプタ１３は、交流電源のコンセントに差し込まれるプラグ１４と、そのプラグ１４と電気的に接続され、マルノコ７側のプラグ１０を接続可能なコンセント１５とを備え、電源コード９のプラグ１０にアダプタ１３を装着し、プラグ１４を交流電源のコンセントに差し込んだ図２の状態で、マルノコ７のＡＣモータ１６を交流電源に接続するモータ駆動回路１７が構成されるようになっている。１８はマルノコ７の本体８に備えられ、手動操作によってモータ駆動回路１７を開閉成させ得るスイッチである。
【００１１】
さらに、アダプタ１３内には、モータ駆動回路１７へＡＣモータ１６と並列に接続されて動作電源を作成する電源部１９と、電源部１９から電源を得て動作する電流検出部２０と、同じく電源部１９から電源を得、電流検出部２０による検出に応じて動作する送信部２１と、を備える。また、電流検出部２０は、モータ駆動回路１７の通電を検出する変流器（図２では「ＣＴ」と略記）２２を有して本発明の電流検出手段を形成し、送信部２１は、送信アンテナ２３を有して本発明の無線送信手段を形成している。すなわち、送信部２１は、電流検出部２０がモータ駆動回路１７内の通電を検出した際には、運転信号を送信アンテナ２３から送信し、電流検出部２０がモータ駆動回路１７内の通電の停止を検出した場合には、停止信号を送信アンテナ２３から送信するものである。
【００１２】
一方、集塵機１側でも、受信機として、ＡＣモータ２４と交流電源とで構成されるモータ駆動回路２５へＡＣモータ２４と並列に接続されて動作電源を作成する電源部２６と、電源部２６から電源を得て動作し、アダプタ１３の送信アンテナ２３から送信された運転信号及び停止信号を受信可能な受信アンテナ２７を備えた無線受信手段としての受信部２８と、同じく電源部２６から電源を得、受信部２８での受信信号に応じて動作する駆動部２９とを備える。この駆動部２９は、受信部２８が運転信号を得た場合には、モータ駆動回路２５に設けたスイッチ３０を閉成させ、停止信号を得た場合にはスイッチ３０を開成させる通電制御手段を構成するものである。
【００１３】
以上の如く構成された連動システムにおいては、集塵機１側では通常に電源コード４を交流電源のコンセントに接続する。この状態でスイッチ３０は開状態であるので、ＡＣモータ２４は駆動しない。そして、マルノコ７側では、電源コード９のプラグ１０をアダプタ１３のコンセント１５に差し込み、アダプタ１３のプラグ１４を交流電源のコンセントに接続する。この状態でマルノコ７のスイッチ１８を閉じると、モータ駆動回路１７に通電されてＡＣモータ１６が駆動すると共に、その電流を電流検出部２０が検出して、送信部２１が送信アンテナ２３から運転信号を送信する。すると、集塵機１では、受信アンテナ２７を介して受信部２８が運転信号を受信するため、駆動部２９はスイッチ３０を閉成させてモータ駆動回路２５に通電させる。よって、ＡＣモータ２４が駆動して集塵機１がマルノコ７と略同時に運転を開始することになる。
【００１４】
一方、マルノコ７側での作業が終了してスイッチ１８を開くと、モータ駆動回路１７での通電が停止してＡＣモータ１６が停止すると共に、電流検出部２０がこれを検出するため、送信部２１は送信アンテナ２３から停止信号を送信する。すると、集塵機１では、受信アンテナ２７を介して受信部２８が停止信号を受信するため、駆動部２９はスイッチ３０を開成させてＡＣモータ２４を停止させる。こうして集塵機１の運転がマルノコ７と略同時に停止する。
【００１５】
このように上記形態１のアダプタ１３及び集塵機１と、それを用いた連動システムによれば、マルノコ７との電源は別にしたまま集塵機１の連動が可能となるため、消費電力の高い大型のマルノコやスライドマルノコ等も使用可能となる。また、マルノコ７と集塵機１との間の運転信号或いは停止信号の送受信が無線によって行われる上、作業前の準備としてはマルノコ７側の電源コード９の差し込みにアダプタ１３を介在させるのみで足りるから、マルノコ７と集塵機１以外に電源コードの引き回しや面倒な作業がなくなり、連動システムが簡単に構成可能となる上、使い勝手に優れる。特に、送信機をマルノコ７へ別体で着脱されるアダプタ１３としたことで、既存のマルノコ７にも簡単に適用でき、マルノコ７には連動システムの採用に係る何等の設計変更も生じないから、コストアップが抑えられる。
【００１６】
《形態２》
次に、連動システムの他の形態を説明する。なお、本形態２を含む以下の各形態において、形態１と同じ構成部は同じ符号を付して重複する説明を省略する。
図３，４に示す形態は、集塵機１側の受信機部分、すなわち、電源部２６、受信アンテナ２７を備えた受信部２８、駆動部２９、モータ駆動回路のスイッチ３０の部分を集塵機１と別体にして、マルノコ７と同様に着脱式のアダプタ１３ａとしたものである。この受信機となるアダプタ１３ａも、交流電源のコンセントに差し込まれる正負のプラグ１４ａと、そのプラグ１４ａと電気的に接続され、集塵機１側のプラグ４ａを接続可能なコンセント１５ａとを備え、電源コード４のプラグ４ａをアダプタ１３ａを介して交流電源のコンセントに差し込んだ図４の状態で、集塵機１のＡＣモータ２４を交流電源に接続するモータ駆動回路２５ａが構成されるようになっている。２４ａは、集塵機１に備えられ、手動操作によってモータ駆動回路２５ａを開閉成するスイッチであるが、プラグ４ａを直接交流電源のコンセントに差し込んだ状態では、スイッチ２４ａの開閉で集塵機１を独自に運転及び停止させることができる。
【００１７】
以上の連動システムにおいても、マルノコ７のスイッチ１８を閉じてモータ駆動回路１７内に通電させると、その通電を電流検出部２０が検出してアダプタ１３が運転信号を送信し、集塵機１では、その運転信号を受信部２８で受信して運転を開始する。一方、スイッチ１８を開いてモータ駆動回路１７の通電を停止させると、アダプタ１３からの停止信号を受信した集塵機１が運転を停止するという形態１と同様の作用が得られる。よって、効果においても形態１と同様で、消費電力の高い大型のマルノコやスライドマルノコ等も使用可能となり、使い勝手に優れる上、連動システムが簡単に構成可能となってコストアップも抑えられる。特にこの形態では、送信機及び受信機共に別体で着脱されるアダプタ１３，１３ａとしたことで、マルノコ７、集塵機１共に連動システムの採用に係る余計な設計変更がなくなるのに加え、２つのアダプタさえ用意すれば、既存の電動工具や集塵機をそのまま利用して連動システムが簡単に得られるという合理的な形態となる。
【００１８】
《形態３》
図５は、アダプタ３１を装着したマルノコ７の正面図で、ここでのアダプタ３１はリング状を呈し、本体８に連設されるハンドル３２において、電源コード９の接続部分に形成された透孔３３を貫通する格好で装着されている。電源コード９の正負のリード線３４，３５は、透孔３３を挟むようにハンドル３２内を引き回されてＡＣモータ１６側へ接続されていることから、一方のリード線３５がアダプタ３１に巻装される。よって、図７に示すように、電流検出部２０の変流器２２はリード線３５での通電を検出可能となる。また、アダプタ３１は、マルノコ７の本体８への装着のため、電源としてバッテリ３６を内蔵すると共に、図示しない分断部分を有して当該分断端部同士が弾性的に係脱可能となっている。よって、当該分断部分を広げることでアダプタ３１をハンドル３２から取り外せば、バッテリ３６の交換や充電等が行える。
【００１９】
以上の連動システムにおいても、マルノコ７のスイッチ１８を閉じてモータ駆動回路１７内に通電させると、リード線３５での通電を電流検出部２０が検出してアダプタ３１が運転信号を送信し、集塵機１では、その運転信号を受信して運転を開始する。一方、スイッチ１８を開いてモータ駆動回路１７の通電を停止させると、アダプタ３１からの停止信号を受信した集塵機１が運転を停止するという形態１と同様の作用が得られる。よって、効果においても形態１と同様で、消費電力の高い大型のマルノコやスライドマルノコ等も使用可能となり、使い勝手に優れ、連動システムが簡単に構成可能となってコストアップも抑えられる。また、形態１，２では、各国の規格に合わせた形状で何種類ものアダプタ１３を準備しなければならないが、この形態３では一種類で足りる。さらに、アダプタ３１が作業者の手元に近いため、アダプタ３１にＯＮ／ＯＦＦスイッチを設ければ、作業後に電動工具を清掃するのに便利である。
そして、この形態３では、アダプタ３１をモータ駆動回路１７のリード線３５部分に装着すれば足りるから、充電式の電動工具にも簡単に適用可能である。
【００２０】
《形態４》
次に、図６に示すマルノコにおいては、ブレードケース１２の正面側にアダプタ３７が着脱可能に装着されている。このアダプタ３７は、図８に示すように、マイク３８を備えた音検出部３９と、振動センサ（加速度ピックアップ）４０を備えた振動検出部４１と、音検出部３９で検出された音の検出信号と、振動検出部４１で検出された振動の検出信号とを夫々所定の閾値と比較する判定部４２と、判定部４２での判定結果を得て、送信アンテナ４４から運転信号或いは停止信号を送信させる送信部４３とを備える。すなわち、判定部４２で音と振動とが共に所定の閾値を超えたと判断された場合には、送信部４３が送信アンテナ４４から運転信号を、何れか一方または双方が閾値を超えないと判断された場合には、送信部４３が送信アンテナ４４から停止信号を夫々送信するものである。なお、このアダプタ３７も各部の電源としてバッテリ４５を備えている。
【００２１】
以上の連動システムにおいても、マルノコ７のスイッチ１８を閉じてＡＣモータ１６を駆動させ、鋸刃１１が回転すると、その回転により発生する音と振動とをマイク３８及び振動センサ４０で検出して、音と振動との両方が閾値を超えた場合にはアダプタ３７は運転信号を送信し、その運転信号を受信した集塵機１は運転を開始する。一方、マルノコ７のスイッチ１８を開いてＡＣモータ１６が停止し、鋸刃１１の回転が停止して音と振動との少なくとも一方が閾値を下回ると、アダプタ３７から停止信号が送信され、その停止信号を受信した集塵機１は運転を停止することになる。よって、消費電力の高い大型のマルノコやスライドマルノコ等も使用可能となり、使い勝手に優れ、連動システムが簡単に構成可能となってコストアップも抑えられる。特にこの形態４では、鋸刃１１近傍のハウジングにアダプタ３７を装着すれば足りるから、充電式を含む既存の電動工具にも何等の設計変更を伴わずに簡単に適用でき、よりコスト的に有利となる。
【００２２】
なお、アダプタ３７には、音や振動の検出の閾値を変更可能な設定器を設けて、工具の大きさや種類等に応じて音や振動の検出感度を調節可能とするのが望ましい。
【００２３】
《形態５》
そして、本発明は上記形態１〜４のような交流式の電動工具に限らず、充電式の電動工具にも適用可能である。例えば図９の連動システムに用いるマルノコ７ａは、蓄電池を収容したバッテリーパック４６をハンドル３２へ着脱可能としたもので、まず両者の装着は、図１０に示すように、バッテリーパック４６の装着面（同図でいう右側）へ下向きに設けた一対のスライドレール４７，４７を、ハンドル３２の装着面（同図でいう左側）へ上向きに設けた一対のガイドレール４８，４８間に上側から嵌挿させることで、両者の連結と両装着面に設けられる端子同士の電気的接続とを図る構造となっている。
【００２４】
そして、アダプタ４９は、マルノコ７ａとバッテリーパック４６との間に介在される。すなわち、アダプタ４９の一方の装着面（図１０の左側）にマルノコ７ａ側と同じ一対のガイドレール５０，５０を、他方の装着面（図１０の右側）にバッテリーパック４６側と同じ一対のスライドレール５１，５１を夫々形成し、正負の端子も同様に配置して、図９及び図１０の二点鎖線に示すように、アダプタ４９を挟む格好でバッテリーパック４６をマルノコ７ａへ装着且つ電気的接続可能としたものである。なお、アダプタ４９内の回路構成は、電源がバッテリーパック４６の蓄電池に代わることを除いて図２で説明したアダプタ１３と同じで、マルノコ７ａ側でも、モータがＤＣモータに代わることを除いてモータ駆動回路１７の構成は変わらない。
【００２５】
以上の連動システムにおいても、マルノコ７ａのスイッチ１８を閉じてモータ駆動回路１７内に通電させると、その電流を電流検出部２０が検出してアダプタ４９が運転信号を送信し、集塵機１では、その運転信号を受信して運転を開始することになる。一方、スイッチ１８を開いてモータ駆動回路１７内の通電を停止させると、アダプタ４９が停止信号を送信し、集塵機１では、その停止信号を受信して運転を停止するという形態１と同様の作用が得られる。よって、効果においても上記各形態と同様に、消費電力の高い大型のマルノコやスライドマルノコ等も使用可能となり、使い勝手に優れ、連動システムが簡単に構成可能となってコストアップも抑えられる。特に、既存の充電式電動工具にも簡単に適用でき、連動システムに係る何等の設計変更も生じないから、よりコスト的に有利となる。
【００２６】
なお、バッテリーパックが図９，１０のようなスライド装着でなく、上部に端子を露出させた突出部を電動工具のハウジングに差し込んで装着する構造の場合も、同様に本発明は採用可能である。すなわち、上部側をバッテリーパックの上部と同じ形態、下部側をマルノコ等の電動工具と同じ形態として、図１１に示すように、アダプタ５２の上部をマルノコ７ａのハンドル３２に差し込み装着する一方、下部側にバッテリーパック５３の上部を差し込み装着することで、アダプタ５２を挟む格好でバッテリーパック５３をマルノコ７ａに装着すれば良い。なお、バッテリーパック５３の側面に電動工具側への係止具が設けられる場合は、アダプタ５２の側面にも同様の係止具を設けると共に、バッテリーパック５３側の係止具が係止可能な被係止部を設けるのが望ましい。
【００２７】
その他、上記各形態では、一つの電動工具に対する一つの集塵機の連動システムとなっているが、複数の連動システムを同時に使用する場合は誤動作のおそれが生じるため、各送信機と受信機との間で送受信される運転信号及び停止信号にＩＤコードを付与して、連動システムごとに区別するのが望ましい。
また、電動工具の停止と略同時に集塵機も停止する構成としているが、集塵機側の受信機に遅延回路を設けて、電動工具側の作動が停止した後も数秒間集塵機の運転を続行させ、ホース内に残る粉塵等を完全に吸い込ませるようにすることもできる。
さらに、モータ速度を切替可能な電動工具に取り付け、電動工具のモータ速度に合わせて集塵機のモータ速度が連動されるようにすれば、急に音圧を下げたくなったときに便利である。
【００２８】
さらに、形態３〜５では、集塵機１に受信機を組み込んだ形態１の回路構成を採用しているが、形態２のようにアダプタ１３ａを用いた着脱式の構成も採用可能である。同様に、形態１〜４では、交流式の集塵機に限らず、集塵機が充電式のものであれば、形態５のアダプタ４９，５２のように、バッテリーパックと集塵機のハウジングとの間で連結される着脱構造のものも採用可能である。
【００２９】
【発明の効果】
請求項１に記載の送信機によれば、前記作動検出手段と無線送信手段とを備えた送信機の採用によって、集塵機の連動システムが簡単に構成可能となる。
請求項２に記載の送信機によれば、請求項１の効果に加えて、作動検出手段を電流検出手段としたことで、作動検出が容易に行える。
請求項３に記載の送信機によれば、請求項１または２の効果に加えて、電動工具が、電源コードから交流電源を得る交流式のものにあって、送信機を、電源コードのプラグに装着する別体の形態としたことで、既存の交流式電動工具にも簡単に適用でき、電動工具には連動システムに係る何等の設計変更も生じないから、コストアップが抑えられる。
請求項４に記載の送信機によれば、請求項１または２の効果に加えて、電動工具が、バッテリーパックをハウジングに装着する充電式のものにあって、送信機を、バッテリーパックとハウジングとの間に装着する別体の形態としたことで、既存の充電式電動工具にも簡単に適用でき、電動工具には連動システムに係る何等の設計変更も生じないから、コストアップが抑えられる。
【００３０】
請求項５に記載の受信機によれば、前記無線受信手段と通電制御手段とを備えた受信機の採用によって、集塵機の連動システムが簡単に構成可能となる。
請求項６に記載の受信機によれば、請求項５の効果に加えて、集塵機が、電源コードから交流電源を得る交流式のものにあって、受信機を、電源コードのプラグに装着する別体の形態としたことで、既存の交流式集塵機にも簡単に適用でき、集塵機には、連動システムに係る何等の設計変更も生じないから、コストアップが抑えられる。
請求項７に記載の受信機によれば、請求項５の効果に加えて、集塵機が、バッテリーパックをハウジングに装着する充電式のものにあって、受信機を、バッテリーパックとハウジングとの間に装着する別体の形態としたことで、既存の充電式集塵機にも簡単に適用でき、集塵機には、連動システムに係る何等の設計変更も生じないから、コストアップが抑えられる。
【００３１】
請求項８に記載の連動システムによれば、電動工具との電源は別にしたまま集塵機の連動が可能となるため、消費電力の高い電動工具も使用可能となる。また、電動工具と集塵機との間の運転信号或いは停止信号の送受信が無線によって行われる上、作業前の準備としては電動工具や集塵機に送信機または受信機を装着させるのみで足りるから、電動工具と集塵機以外に電源コードの引き回しや面倒な作業がなくなり、操作性や使い勝手に優れる。
【図面の簡単な説明】
【図１】形態１の連動システムの説明図である。
【図２】連動システムの回路構成図である。
【図３】形態２の連動システムの説明図である。
【図４】連動システムの回路構成図である。
【図５】形態３の連動システムに使用するマルノコの正面図である。
【図６】形態４の連動システムに使用するマルノコの正面図である。
【図７】形態３の連動システムにおけるマルノコ及びアダプタの回路構成図である。
【図８】形態４の連動システムにおけるアダプタの回路構成図である。
【図９】形態５の連動システムの説明図である。
【図１０】形態５の連動システムに使用するマルノコの説明図である。
【図１１】形態５の変更例に係る連動システムの説明図である。
【符号の説明】
１・・集塵機、２・・タンク、３・・本体、４・・電源コード、７・・マルノコ、８・・本体、９・・電源コード、１１・・鋸刃、１３，１３ａ，３１，３７，４９，５２・・アダプタ、１６・・ＡＣモータ、１７，２５・・モータ駆動回路、１９・・電源部、２０・・電流検出部、２１・・送信部、２２・・変流器、２３・・送信アンテナ、２６・・電源部、２７・・受信アンテナ、２８・・受信部、２９・・駆動部、４６，５３・・バッテリーパック。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is, for example, a transmitter used for a power tool such as a circular saw, a receiver used for a dust collector, and an interlocking system of a dust collector that automatically activates and deactivates the dust collector with the activation and deactivation of the power tool. About.
[0002]
[Prior art]
When using a power tool such as a circular saw, grinder, canna, etc., dust and cutting debris are discharged.Connect the power tool to a dust collector via a hose, and work while operating the dust collector. In many cases, the dust is directly sucked into the dust collector.
In such a case, it is troublesome to separately operate the power switches of the power tool and the dust collector each time the work is started and stopped, which reduces workability. Therefore, as disclosed in Patent Literature 1, a receptacle for power tool connection, a receptacle for dust collector connection, and a current detection unit for detecting energization in a circuit between the AC power supply and the power tool are connected to an AC power supply. And a control circuit for turning on / off a bidirectional switching element in a circuit between the AC power supply and the dust collector according to the presence or absence of detection of the current detection unit. There is known an invention in which the ON / OFF of the dust collector is linked with the ON / OFF of the dust collector to improve the usability.
[0003]
[Patent Document 1]
JP-A-63-191580
[0004]
[Problems to be solved by the invention]
However, since the power tool and the dust collector are connected together in the above-mentioned combined equipment control device, they cannot be used with large power tools or high-powered power tools that consume high power. It cannot be used for rechargeable power tools. In addition, since the power tool, dust collector, and combined equipment control device are all AC power supplies, it is troublesome to prepare and connect the combined equipment control device each time the dust collector is used. There was also a risk of getting in the way.
[0005]
Therefore, the present invention provides a transmitter and a receiver for an interlocking system that can be used without trouble even with a high power consumption power tool or a rechargeable power tool without impairing operability or workability, and It is an object of the present invention to provide an interlocking system of a dust collector using the same.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is detachable to an electric tool, and based on operation detection means for detecting operation of the electric tool in a mounted state, based on a detection result by the operation detection means, This is a transmitter provided with a wireless transmission means for transmitting a signal such as operation or stop.
According to a second aspect of the present invention, in addition to the object of the first aspect, in order to easily detect the operation of the power tool, the operation detection means includes a current detection means for detecting whether or not the motor of the power tool is energized. It is what it was.
According to a third aspect of the present invention, in addition to the object of the first or second aspect, the power tool is of an AC type having a power cord, and the transmitter is configured to be more suitable for an interlocking system. The transmitter includes an outlet into which a plug of a power cord can be inserted, and a plug which can be inserted into an outlet of an AC power supply, so that the transmitter can be attached to the power cord.
According to a fourth aspect of the present invention, in addition to the object of the first or second aspect, the power tool is a rechargeable type in which a battery pack is mounted on a housing, and the transmitter is more preferably configured by an interlocking system. To this end, the transmitter is provided with a mounting surface of the same form as the mounting surface of the battery pack and the mounting surface of the housing, and can be mounted between the battery pack and the housing.
[0007]
To achieve the above object, an invention according to claim 5 is provided in a dust collector, and a wireless receiving unit that receives a signal from a wireless transmitting unit of the transmitter according to any one of claims 1 to 4, The present invention is a receiver comprising: an energization control unit that controls energization of a motor drive circuit of a dust collector based on a signal received by the wireless reception unit.
According to a sixth aspect of the present invention, in addition to the object of the fifth aspect, the dust collector is an AC type having a power cord, and the receiver is configured to be more suitable for an interlocking system. Is provided with an outlet into which a plug of a power cord can be inserted, and a plug which can be inserted into an outlet of an AC power supply, so that the plug can be attached to the power cord.
According to a seventh aspect of the present invention, in addition to the object of the fifth aspect, the dust collector is a rechargeable type in which a battery pack is mounted on a housing, and the receiver is configured to be more suitable for an interlocking system. The receiver has a mounting surface of the same form as the mounting surface of the battery pack and the mounting surface of the housing, and can be mounted between the battery pack and the housing.
[0008]
In order to achieve the above object, according to an eighth aspect of the present invention, the transmitter according to any one of the first to fourth aspects is mounted on a power tool, and is connected to the power tool via a hose. A dust collector is provided with a receiver according to any one of claims 5 to 7 so as to provide an interlocking system of the dust collector that can operate and stop the operation of the dust collector in conjunction with the operation and stop of the power tool.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
《Form 1》
FIG. 1 is an explanatory diagram of an interlocking system of a dust collector using a circular saw as a power tool. The dust collector 1 has a main body 3 containing an AC motor and a suction fan mounted on an upper part of a tank 2. A power cord 4 is connected to the tank 2. When an AC power is obtained from the power cord 4 and the AC motor is driven, the outside air is sucked together with dust and the like from the hose 6 connected to the suction port 5 of the tank 2, and the inside of the tank 2 is discharged. Air is exhausted from the main body 3 through the passage. Since a filter is interposed between the inside of the tank 2 and the main body 3, the sucked dust and the like are captured by the filter and stored in the tank 2.
[0010]
Reference numeral 7 denotes a circular saw, and a main body 8 to which a power cord 9 for obtaining an AC power supply is connected similarly to the dust collector 1 is provided with a disk-shaped saw blade 11 which is rotated by driving an AC motor. The hose 6 of the dust collector 1 is connected to a blade case 12 that covers the saw blade 11.
Here, the plug 10 of the power cord 9 is inserted into an outlet of an AC power supply via an adapter 13 serving as a transmitter. The adapter 13 includes a plug 14 that is inserted into an outlet of an AC power supply, and an outlet 15 that is electrically connected to the plug 14 and to which the plug 10 on the side of the circular saw 7 can be connected. 2, the motor drive circuit 17 connects the AC motor 16 of the circular saw 7 to the AC power supply in the state of FIG. 2 in which the plug 13 is attached and the plug 14 is inserted into the outlet of the AC power supply. Reference numeral 18 denotes a switch provided on the main body 8 of the circular saw 7 and capable of opening and closing the motor drive circuit 17 by manual operation.
[0011]
The adapter 13 further includes a power supply unit 19 connected to the motor drive circuit 17 in parallel with the AC motor 16 to generate an operation power supply, a current detection unit 20 operating by receiving power from the power supply unit 19, and a power supply unit. A transmission unit 21 that obtains power from the unit 19 and operates according to the detection by the current detection unit 20. Further, the current detecting unit 20 includes a current transformer (abbreviated as “CT” in FIG. 2) 22 for detecting the energization of the motor drive circuit 17 to form a current detecting unit of the present invention. The transmission antenna 23 forms a wireless transmission unit of the present invention. That is, when the current detection unit 20 detects energization in the motor drive circuit 17, the transmission unit 21 transmits an operation signal from the transmission antenna 23, and the current detection unit 20 stops the energization in the motor drive circuit 17. Is detected, the stop signal is transmitted from the transmitting antenna 23.
[0012]
On the other hand, on the dust collector 1 side, as a receiver, a power supply unit 26 that is connected in parallel with the AC motor 24 to a motor drive circuit 25 including an AC motor 24 and an AC power supply to create an operation power supply; A receiving unit 28 serving as a wireless receiving unit having a receiving antenna 27 capable of receiving an operation signal and a stop signal transmitted from the transmitting antenna 23 of the adapter 13 and operating by receiving power, and also receiving power from the power unit 26 , A driving unit 29 that operates in accordance with a signal received by the receiving unit 28. The drive unit 29 includes an energization control unit that closes the switch 30 provided in the motor drive circuit 25 when the receiving unit 28 obtains the operation signal and opens the switch 30 when the stop signal is obtained. Make up.
[0013]
In the interlocking system configured as described above, the dust collector 1 normally connects the power cord 4 to an AC power outlet. Since the switch 30 is open in this state, the AC motor 24 is not driven. Then, on the circular saw 7, the plug 10 of the power cord 9 is inserted into the outlet 15 of the adapter 13, and the plug 14 of the adapter 13 is connected to the outlet of the AC power supply. When the switch 18 of the circular saw 7 is closed in this state, the motor drive circuit 17 is energized to drive the AC motor 16, and the current is detected by the current detection unit 20. Send Then, in the dust collector 1, since the receiving unit 28 receives the operation signal via the receiving antenna 27, the driving unit 29 closes the switch 30 to energize the motor driving circuit 25. Therefore, the AC motor 24 is driven, and the dust collector 1 starts operating almost simultaneously with the circular saw 7.
[0014]
On the other hand, when the switch 18 is opened after the work on the circular saw 7 is completed, the energization in the motor drive circuit 17 is stopped and the AC motor 16 is stopped, and the current detection unit 20 detects this. 21 transmits a stop signal from the transmission antenna 23. Then, in the dust collector 1, since the receiving unit 28 receives the stop signal via the receiving antenna 27, the driving unit 29 opens the switch 30 to stop the AC motor 24. Thus, the operation of the dust collector 1 stops almost simultaneously with the circular saw 7.
[0015]
As described above, according to the adapter 13 and the dust collector 1 of the first embodiment, and the interlocking system using the same, the dust collector 1 can be interlocked with the power supply to the marunoco 7 separated, so that a large power And slide marnoko can also be used. Further, the transmission and reception of the operation signal or the stop signal between the circular saw 7 and the dust collector 1 are performed wirelessly, and as preparations before work, it is sufficient to simply insert the adapter 13 into the insertion of the power cord 9 of the circular saw 7. In addition, there is no need to run the power cord or troublesome work other than the circular saw 7 and the dust collector 1, so that the interlocking system can be easily configured and the operability is excellent. In particular, since the transmitter is the adapter 13 that can be separately attached to and detached from the circular saw 7, the present invention can be easily applied to the existing circular saw 7, and there is no design change in the use of the interlocking system in the circular saw 7. Thus, cost increase can be suppressed.
[0016]
《Form 2》
Next, another embodiment of the interlocking system will be described. In each of the following embodiments including the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and overlapping description will be omitted.
3 and 4, the receiver portion on the dust collector 1 side, that is, a power supply unit 26, a receiving unit 28 provided with a receiving antenna 27, a driving unit 29, and a switch 30 of a motor drive circuit are separated from the dust collector 1. The adapter is a detachable adapter 13a similar to the circular saw 7. The adapter 13a serving as a receiver also includes a positive / negative plug 14a inserted into an outlet of an AC power supply, and an outlet 15a electrically connected to the plug 14a and to which a plug 4a on the dust collector 1 side can be connected. In the state shown in FIG. 4 in which the plug 4a of FIG. 4 is inserted into an outlet of an AC power supply via the adapter 13a, a motor drive circuit 25a for connecting the AC motor 24 of the dust collector 1 to the AC power supply is configured. Reference numeral 24a denotes a switch provided in the dust collector 1 for manually opening and closing the motor drive circuit 25a. When the plug 4a is directly inserted into the outlet of the AC power supply, the switch 24a is opened and closed to independently operate the dust collector 1. And can be stopped.
[0017]
Also in the above interlocking system, when the switch 18 of the circular saw 7 is closed to energize the motor drive circuit 17, the current detection unit 20 detects the energization and the adapter 13 transmits an operation signal. The operation is started by receiving the operation signal by the receiving unit 28. On the other hand, when the switch 18 is opened and the energization of the motor drive circuit 17 is stopped, the same operation as in the first embodiment in which the dust collector 1 receiving the stop signal from the adapter 13 stops operating can be obtained. Therefore, in the same manner as in the first embodiment, a large circular saw and a slide circular saw with high power consumption can also be used, which is excellent in usability and can be easily configured with an interlocking system, thereby suppressing an increase in cost. In particular, in this embodiment, the adapter 13 and 13a are separately attached and detached for both the transmitter and the receiver, so that there is no unnecessary design change related to the adoption of the interlocking system for both the circular saw 7 and the dust collector 1, and the two As long as an adapter is prepared, an interlocking system can be easily obtained by using existing power tools and dust collectors as they are.
[0018]
《Form 3》
FIG. 5 is a front view of the circular saw 7 to which the adapter 31 is attached. The adapter 31 has a ring shape, and a through hole formed in a connecting portion of the power cord 9 in a handle 32 connected to the main body 8. 33. The positive and negative lead wires 34 and 35 of the power cord 9 are routed inside the handle 32 so as to sandwich the through hole 33 and are connected to the AC motor 16 side, so that one lead wire 35 is wound around the adapter 31. Be mounted. Therefore, as shown in FIG. 7, the current transformer 22 of the current detection unit 20 can detect the conduction through the lead wire 35. In addition, the adapter 31 has a built-in battery 36 as a power source for mounting the circular saw 7 to the main body 8, and has a not-shown dividing portion so that the divided ends can be elastically disengaged. I have. Therefore, if the adapter 31 is detached from the handle 32 by expanding the divided portion, the battery 36 can be replaced or charged.
[0019]
Also in the above-described interlocking system, when the switch 18 of the circular saw 7 is closed to energize the motor drive circuit 17, the current detection unit 20 detects energization through the lead wire 35, the adapter 31 transmits an operation signal, and the dust collector At 1, the operation is received and the operation is started. On the other hand, when the switch 18 is opened and the energization of the motor drive circuit 17 is stopped, the same operation as in the first embodiment in which the dust collector 1 that has received the stop signal from the adapter 31 stops operating can be obtained. Therefore, in the same manner as in the first embodiment, a large circular saw and a slide circular saw with high power consumption can also be used, which is excellent in usability, can easily configure an interlocking system, and can suppress an increase in cost. In the first and second embodiments, several types of adapters 13 must be prepared in a shape conforming to the standards of each country. In the third embodiment, one type is sufficient. Furthermore, since the adapter 31 is close to the operator's hand, providing an ON / OFF switch on the adapter 31 is convenient for cleaning the power tool after the operation.
In the third embodiment, since it is sufficient to mount the adapter 31 on the lead wire 35 of the motor drive circuit 17, it is easily applicable to a rechargeable power tool.
[0020]
《Form 4》
Next, in the circular saw shown in FIG. 6, an adapter 37 is detachably mounted on the front side of the blade case 12. As shown in FIG. 8, the adapter 37 includes a sound detection unit 39 including a microphone 38, a vibration detection unit 41 including a vibration sensor (acceleration pickup) 40, and detection of a sound detected by the sound detection unit 39. The signal and the detection signal of the vibration detected by the vibration detection unit 41 are each compared with a predetermined threshold. The determination result obtained by the determination unit 42 is obtained, and the operation signal or the stop signal is transmitted And a transmitting unit 43 for transmitting. That is, when the determination unit 42 determines that both the sound and the vibration exceed the predetermined threshold, the transmission unit 43 determines that one or both of the driving signals from the transmission antenna 44 do not exceed the threshold. In this case, the transmitting unit 43 transmits a stop signal from the transmitting antenna 44, respectively. The adapter 37 also includes a battery 45 as a power source for each unit.
[0021]
In the above interlocking system also, when the switch 18 of the circular saw 7 is closed to drive the AC motor 16 and the saw blade 11 rotates, the sound and vibration generated by the rotation are detected by the microphone 38 and the vibration sensor 40, When both the sound and the vibration exceed the threshold, the adapter 37 transmits an operation signal, and the dust collector 1 receiving the operation signal starts the operation. On the other hand, when the switch 18 of the circular saw 7 is opened to stop the AC motor 16 and the rotation of the saw blade 11 stops and at least one of the sound and the vibration falls below the threshold, a stop signal is transmitted from the adapter 37 and the stop is performed. Upon receiving the signal, the dust collector 1 stops operating. Therefore, a large circular saw or a slide circular saw with high power consumption can be used, which is excellent in usability, and an interlocking system can be easily configured, thereby suppressing an increase in cost. In particular, in this embodiment 4, since it is sufficient to mount the adapter 37 on the housing near the saw blade 11, it can be easily applied to an existing electric tool including a rechargeable type without any design change, and is more cost-effective. It becomes.
[0022]
It is desirable that the adapter 37 be provided with a setting device capable of changing the threshold value of sound and vibration detection so that the sound and vibration detection sensitivity can be adjusted according to the size and type of the tool.
[0023]
<< form 5 >>
The present invention is not limited to the AC power tool as in the above-described first to fourth embodiments, and is applicable to a rechargeable power tool. For example, the circular saw 7a used in the interlocking system of FIG. 9 has a battery pack 46 containing a storage battery detachably attached to the handle 32. First, as shown in FIG. A pair of slide rails 47, 47 provided downward to the right side in the figure) are inserted from above into a pair of guide rails 48, 48 provided upward to the mounting surface of the handle 32 (the left side in the figure). By doing so, the connection between them and the electrical connection between the terminals provided on both mounting surfaces are achieved.
[0024]
The adapter 49 is interposed between the circular saw 7a and the battery pack 46. That is, the same pair of guide rails 50 and 50 as the side of the saw blade 7a is mounted on one mounting surface (left side in FIG. 10) of the adapter 49, and the same pair of slides as the battery pack 46 side is mounted on the other mounting surface (right side in FIG. 10). The rails 51 and 51 are formed respectively, and the positive and negative terminals are arranged in the same manner. As shown by the two-dot chain line in FIGS. 9 and 10, the battery pack 46 is mounted on the circular saw 7a with the adapter 49 interposed therebetween and electrically connected. Connectable. The circuit configuration in the adapter 49 is the same as that of the adapter 13 described in FIG. 2 except that the power supply is replaced by the storage battery of the battery pack 46. The configuration of the drive circuit 17 does not change.
[0025]
Also in the above interlocking system, when the switch 18 of the circular saw 7a is closed and the motor drive circuit 17 is energized, the current is detected by the current detection unit 20 and the adapter 49 transmits an operation signal. The operation is started upon receiving the operation signal. On the other hand, when the switch 18 is opened to stop the energization in the motor drive circuit 17, the adapter 49 transmits a stop signal, and the dust collector 1 receives the stop signal and stops operation. Is obtained. Therefore, similarly to the above-described embodiments, a large circular saw and a slide circular saw with high power consumption can be used, which is excellent in usability, and an interlocking system can be easily configured to suppress an increase in cost. In particular, the present invention can be easily applied to existing rechargeable power tools, and does not require any design change related to the interlocking system.
[0026]
The present invention can be similarly applied to a case where the battery pack is not slide-mounted as shown in FIGS. 9 and 10 but has a structure in which a protruding portion whose terminal is exposed at the top is inserted into the housing of the power tool and mounted. . That is, as shown in FIG. 11, the upper part of the adapter 52 is inserted into the handle 32 of the circular saw 7a, and the lower part is mounted in the same shape as the upper part of the battery pack, and the lower part thereof is formed in the same form as a power tool such as a circular saw. By inserting and mounting the upper part of the battery pack 53 on the side, the battery pack 53 may be mounted on the circular saw 7a with the adapter 52 interposed therebetween. When a locking tool for the electric tool is provided on the side surface of the battery pack 53, a similar locking tool is provided on the side surface of the adapter 52, and the locking tool on the battery pack 53 side can be locked. It is desirable to provide a locked portion.
[0027]
In addition, in each of the above embodiments, an interlocking system of one dust collector with respect to one power tool is used.However, if a plurality of interlocking systems are used at the same time, a malfunction may occur. It is desirable to assign an ID code to the operation signal and the stop signal transmitted / received in the above to distinguish each interlocking system.
The dust collector is also stopped almost simultaneously with the stop of the power tool.However, a delay circuit is provided in the receiver on the dust collector side so that the operation of the dust collector is continued for several seconds after the operation of the power tool is stopped, and the hose is stopped. The dust and the like remaining in the inside can be completely sucked.
Further, if the motor speed of the dust collector is attached to a power tool that can switch the motor speed and the motor speed of the dust collector is linked in accordance with the motor speed of the power tool, it is convenient when it is necessary to suddenly reduce the sound pressure.
[0028]
Further, in the forms 3 to 5, the circuit configuration of the form 1 in which the receiver is incorporated in the dust collector 1 is adopted, but a detachable structure using the adapter 13a as in the form 2 can also be adopted. Similarly, in the first to fourth embodiments, the dust collector is not limited to the AC type dust collector, but is connected between the battery pack and the housing of the dust collector like the adapters 49 and 52 of the fifth embodiment as long as the dust collector is a rechargeable one. A detachable structure having a detachable structure is also applicable.
[0029]
【The invention's effect】
According to the transmitter of the first aspect, the interlocking system of the dust collector can be easily configured by employing the transmitter including the operation detection unit and the wireless transmission unit.
According to the transmitter of the second aspect, in addition to the effect of the first aspect, the operation detection can be easily performed by using the current detection means as the operation detection means.
According to the transmitter of the third aspect, in addition to the effect of the first or second aspect, the power tool is an AC type tool that obtains AC power from a power cord, and the transmitter is connected to a plug of the power cord. By adopting a separate form to be attached to the power tool, it can be easily applied to existing AC power tools, and the power tool does not require any design change related to the interlocking system.
According to the transmitter of the fourth aspect, in addition to the effects of the first or second aspect, the power tool is a rechargeable type in which the battery pack is mounted on the housing. It can be easily applied to existing rechargeable power tools, and there is no need to change the design of the interlocking system for power tools. .
[0030]
According to the receiver according to the fifth aspect, the interlocking system of the dust collector can be easily configured by employing the receiver including the wireless receiving unit and the energization control unit.
According to the receiver of claim 6, in addition to the effect of claim 5, the dust collector is of an AC type that obtains AC power from a power cord, and the receiver is attached to a plug of the power cord. By adopting a separate form, the present invention can be easily applied to an existing AC dust collector, and the dust collector does not require any design change related to the interlocking system, thereby suppressing an increase in cost.
According to the receiver of claim 7, in addition to the effect of claim 5, the dust collector is a rechargeable type in which the battery pack is mounted on the housing, and the receiver is provided between the battery pack and the housing. By adopting a separate form to be mounted on the dust collector, it can be easily applied to the existing rechargeable dust collector, and the dust collector does not require any design change related to the interlocking system, thereby suppressing an increase in cost.
[0031]
According to the interlocking system of the eighth aspect, the dust collector can be interlocked with the power supply of the electric power tool being separated, so that an electric power tool with high power consumption can be used. In addition, the transmission and reception of the operation signal or the stop signal between the power tool and the dust collector are performed wirelessly. In addition, as preparations before work, it is sufficient to simply attach the transmitter or the receiver to the power tool or the dust collector. There is no need to run the power cord or troublesome work other than the dust collector, and it is excellent in operability and usability.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an interlocking system according to a first embodiment.
FIG. 2 is a circuit configuration diagram of an interlocking system.
FIG. 3 is an explanatory diagram of an interlocking system according to a second embodiment.
FIG. 4 is a circuit configuration diagram of an interlocking system.
FIG. 5 is a front view of a mushroom used in an interlocking system according to a third embodiment.
FIG. 6 is a front view of a mushroom used in the interlocking system according to the fourth embodiment.
FIG. 7 is a circuit configuration diagram of a circular saw and an adapter in an interlocking system according to a third embodiment.
FIG. 8 is a circuit configuration diagram of an adapter in the interlocking system according to the fourth embodiment.
FIG. 9 is an explanatory diagram of an interlocking system according to a fifth embodiment.
FIG. 10 is an explanatory diagram of a circular saw used in the interlocking system according to the fifth embodiment.
FIG. 11 is an explanatory diagram of an interlocking system according to a modification of the fifth embodiment.
[Explanation of symbols]
1. dust collector, 2. tank, 3. body, 4. power cord, 7. marunoco, 8. body, 9. power cord, 11. saw blade, 13, 13a, 31, 37 , 49, 52 · · adapter, 16 · · · AC motor, 17, 25 · · · motor drive circuit, 19 · · · power supply section, 20 · · · current detection section, 21 · · · transmission section, 22 · · current transformer, 23 .. A transmitting antenna, 26 a power supply unit, 27 a receiving antenna, 28 a receiving unit, 29 a driving unit, 46, 53 a battery pack.

Claims

The power tool includes an operation detection unit that is detachable from the power tool and detects an operation of the power tool in a mounted state, and a wireless transmission unit that transmits an operation signal or a stop signal based on a detection result by the operation detection unit. Transmitter.

The transmitter according to claim 1, wherein the operation detection unit is a current detection unit that detects whether or not power is supplied to the motor of the power tool.

In the case where the power tool is an AC type having a power cord, the power tool includes an outlet into which a plug of the power cord can be inserted, and a plug that can be inserted into an outlet of an AC power supply, and can be attached to the power cord. The transmitter according to claim 1 or 2, wherein

When the power tool is a rechargeable type in which the battery pack is mounted in the housing, the power tool includes a mounting surface for mounting the battery pack and a mounting surface having the same form as the mounting surface for the housing. The transmitter according to claim 1, wherein the transmitter can be mounted between the transmitters.

A wireless receiver provided in the dust collector for receiving a signal from the wireless transmitter of the transmitter according to any one of claims 1 to 4, and a motor drive of the dust collector based on the signal received by the wireless receiver. A receiver comprising: an energization control unit that controls energization of a circuit.

When the dust collector is an AC type equipped with a power cord, the dust collector includes an outlet into which a plug of the power cord can be inserted, and a plug that can be inserted into an outlet of an AC power supply, and can be attached to the power cord. The receiver according to claim 5.

When the dust collector is of a rechargeable type in which the battery pack is mounted on the housing, the rechargeable type includes a mounting surface of the battery pack and a mounting surface of the same form as the mounting surface of the housing. The receiver according to claim 5, wherein the receiver can be mounted in between.

The transmitter according to any one of claims 1 to 4 is mounted on a power tool, and the dust collector connected to the power tool via a hose is provided with the receiver according to any one of claims 5 to 7. And an interlocking system of the dust collector, wherein the operation and the stop of the dust collector can be interlocked with the operation and the stop of the power tool.