JP3820539B2

JP3820539B2 - Vacuum cleaner

Info

Publication number: JP3820539B2
Application number: JP2000018618A
Authority: JP
Inventors: 浩二蓮; 孝暢上岡; 美和伊藤; 史郎石井; 武広山口; 健児柳沢; 政義飯塚
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2000-01-27
Filing date: 2000-01-27
Publication date: 2006-09-13
Anticipated expiration: 2020-01-27
Also published as: JP2001204669A

Description

【０００１】
【発明の属する技術分野】
本発明は電気掃除機、特に先端に吸込口体を有する延長管と接続された把持部を有する手元操作体に対して掃除機本体に接続された集塵ホースの端部を周方向に回転可能に接続することにより、集塵ホースが周方向に回動しても集塵ホースに捩れが生じないようにした電気掃除機に関するものである。
【０００２】
【従来の技術】
図９〜図２８は例えば特開平７−６７８１９号公報に記載された従来の電気掃除機を示している。
図９において、２０は電気掃除機本体である。この電気掃除機本体２０内には、集塵室２１に設置された集塵フィルタ２２と、集塵室２１を負圧にする電動送風機２３及びこの電動送風機２３を制御する制御回路（図示せず）等とが設けられている。さらに、電気掃除本体２０には集塵フィルタ２２内と連通した接続口２５が設けられている。接続口２５には、制御回路の電源回路に接続された電源接続部２６と電動送風機２３を制御する制御回路の送風機制御回路（図示せず）に接続された信号接続部２７とが設けられている。
【０００３】
３０は集塵ホースで、この集塵ホース３０の一端部に接続口２５に着脱可能に接続される接続部３１（第１の接続筒部）が設けられている。この接続部３１には、電源接続部２６に接続される電源プラグ３２ａ，３２ｂと、信号接続部２７に接続される信号用の接続ピン３３ａ，３３ｂとが設けられている。
この集塵ホース３０の周囲には、螺旋状配線部ＳＰ，ＳＳがホース両端まで一体に形成されている。この螺旋状配線部ＳＰ内には一端が電源プラグ３２ａ，３２ｂに接続された導電性でバネ性を有するリード線Ｒ１′，Ｒ２′が螺旋部ＳＰに沿うように固着され、螺旋状配線部ＳＳ内には一端が接続ピン３３ａ，３３ｂに接続された導電性でバネ性を有するリード線Ｒ１′，Ｒ２′が固着されている。このリード線Ｒ１′，Ｒ２′，Ｒ３′，Ｒ４′の他端には柔軟性のあるリード線Ｒ１，Ｒ２，Ｒ３，Ｒ４が接続されている。
【０００４】
４０は操作体（第２の接続筒部）、４１は延長管、４２は吸込口体である。吸込口体４２には、回転清掃体である回転ブラシ４３と、回転ブラシ４３を回転させる駆動モータ４４とが設けられている。
操作体４０は、図１０及び図１１に示すように、把持部４５と操作部４６と操作管４７（外筒）とを有しており、操作部４６には、回転ブラシ４３の駆動モータ４４をオン・オフさせる操作スイッチＳ１と電動送風機２３の強弱を設定する操作スイッチＳ２と被清掃体の種類に応じて電動送風機２３を制御させる操作スイッチＳ３と電動送風機２３をオン・オフさせる操作スイッチＳ４とが設けられている。
【０００５】
操作管４７の一端には延長管４１を接続する接続口４７ａが設けられており、操作管４７の他端には、回転体５０を保持する保持部４８が設けられている。保持部４８の一端側の内周面には後述する接続部５４を回転自在に係合する係合部４８ａが形成され、また保持部４８の上側には開口４８ｂが形成され、この開口４８ｂには接点蓋４９が取り付けられている。
接点蓋４９には、図１２に示すように、二股に分かれた接点板４９ａ〜４９ｄが取り付けられており、接点板４９ａ〜４９ｄには接点４９ｃ〜４９ｈが設けられている。接点板４９ａ，４９ｂが駆動モータ４４用の電源供給線Ｌ１，Ｌ２に接続され、接点板４９ｃ，４９ｄが信号線Ｌ３，Ｌ４に接続されている。
【０００６】
信号線Ｌ３，Ｌ４は、図１１に示すように、操作体４０内に設けた回路基板Ｇの回路（図示せず）に接続されている。また、電源供給源Ｌ１，Ｌ２は直接駆動モータ４４へ接続される。
回転体５０は図１３〜図１５に示すように筒本体５１（内筒）から構成され、筒本体５１には、集塵ホース３０の他端を接続固定するホース接続部５２と、摺接部５３と、保持部４８に回転自在に接続される接続部５４とが設けられている。Ｔは集塵ホース３０を固定するための突起、Ｕはシール部材を取り付ける溝である。
摺接部５３には、周方向に延びた環状リブ５５〜６５が左から所定間隔を隔てて順に設けられており、各環状リブ５５〜６３間には溝６６〜７３が形成された状態となっている。
【０００７】
環状リブ５５と環状リブ５６との間には、環状リブ５５，５６を連結した一対の係止部材６６ａ，６６ｂが互いに軸線Ｑに対して対称に形成されている。同様に、環状リブ５７と５８との間には、環状リブ５７，５８を連結した係止部材６８ａ，６８ｂが図１６に示すように形成されている。また、環状リブ５９と６０、環状リブ６１と６２との間には、それら環状リブを連結した一対の係止部材７０ａ，７０ｂ、７２ａ，７２ｂがそれぞれ形成されている。
環状リブ５６〜６３には溝６７，６９，７１，７３側に軸線Ｑに対して一段下がった状態に当接面５６ａ〜６３ａ（段部）が形成されていて、この当接面５６ａ〜６３ａ（段部）は溝６７，６９，７１，７３を段付溝としている。この当接面５６ａ〜６３ａは筒本体５１の周方向に沿って延びており、軸線Ｑから一定距離離間した位置に形成された状態となっている。
【０００８】
また、環状リブ５７には、図１７に示すように、２つの狭小の切欠部５７ｃ，５７ｄが設けられている。同様に、図１８及び図１９に示すように、環状リブ５８〜６４に切欠部５７ｃ，５７ｄと同じ位置に切欠部５８ｃ〜６４ｃ、５８ｄ〜６４ｄがそれぞれ設けられている。
その切欠部５７ｃ，５７ｄの位置には、環状リブ５７と環状リブ５８とを接続した接続壁８１〜８４が形成されている。同様に、他の切欠部５８ｃ〜６４ｃ、５８ｄ〜６４ｄの位置に環状リブ５９と６０、環状リブ６１と６２、環状リブ６３と６４を接続した接続壁８１〜８４が形成されている。
【０００９】
接続壁８１，８４には突部８１ａ，８４ａが形成され、接続壁８１と接続壁８２との間の配線用溝Ｍ１にリード線Ｒ１，Ｒ２の配線用端部（他端部）を配設してそのリード線Ｒ１，Ｒ２の配線用端部を突部８１ａによって押え込むものである。同様に、接続壁８３と接続壁８４との間の配線用溝Ｍ２にリード線Ｒ３，Ｒ４の配線用端部（他端部）を配設してその突部８４ａによってリード線Ｒ３，Ｒ４の配線用端部を押え込むものである（図１３参照）。尚、複数の配線用溝Ｍ１は内筒である筒本体５１の軸方向に複数直列に配列され、同様に複数の配線用溝Ｍ２も内筒である筒本体５１の軸方向に複数直列に配列されていると共に、配線用溝Ｍ１，Ｍ２は筒本体５１の周方向において隣接して配設されている。
【００１０】
また、環状リブ５６には、切欠部５７ｃ，５７ｄの位置と反対側の位置に図２０に示すように比較的大きめの２つの切欠部５６ｅ，５６ｆが設けられている。同様に、環状リブ５８，６０，６２にも切欠部５６ｅ，５６ｆと同じ位置に切欠部５８ｅ，５８ｆ，６０ｅ，６０ｆ，６２ｅ，６２ｆがそれぞれ設けられている。
切欠部５６ｅと切欠部５６ｆとの間には、凹部９１ａを形成した係止部９１がリブ５７と一体的に連続形成されている（図１７参照）。同様に、切欠部５８ｅ，６０ｅ，６２ｅと切欠部５８ｆ，６０ｆ，６２ｆとの間に凹部９２ａ〜９４ａを形成した係止部９２〜９４がリブ５９，６１，６３と一体的に連続形成され、各係止部９１〜９４が軸方向に沿って一直線上に並んでいる。
【００１１】
係止部９１〜９４の上面９１ｂ〜９４ｂは当接面５７ａ，５９ａ，６１ａ，６３ａと面一となっている。また、環状リブ５７には図１７に示すように係止部９１と対向した位置に且つ当接面５７ａと直交するとともに軸線Ｑに向けて延びた係止面５７ｇが形成されている。同様に、環状リブ５９，６１，６３には、係止部９２〜９４と対向した位置に且つ当接面５７ａ，５９ａ，６１ａ，６３ａと直交するとともに軸線Ｑに向けて延びた係止面５９ｇ，６１ｇ，６３ｇが形成されている。
当接面５６ａと５７ａ、当接面５８ａと５９ａ、当接面６０ａと６１ａ、当接面６２ａと６３ａには、接点４９ａ〜４９ｄ（図１２参照）と摺接する導電性の摺接板１０１〜１０４が図２１及び図２２に示すようにリング状に装着される。
【００１２】
摺接板１０１は、図２３及び図２４に示すように、一端にはリブ５７の係止部９１に係合するＬ字状に折り曲げられた係合部１０１ａが形成され、他端には係止面５７ｇに当接して係止する係止片１０１ｂが図２４において垂下した状態に形成されている。また、摺接板１０１には、一端側の側部にリード線Ｒ１を接続する接続片１０５（リード線接続部）が形成され、他端側の側部にＬ字状に形成された押え部１０６が形成されている。押え部１０６の底部である当接片１０６ａが、切欠部５６ｆ位置における溝６６の底面６６ｈに当接するようになっている。他の摺接板１０２〜１０４も全く同一に構成されているので、その説明は省略する。
【００１３】
この摺接板１０１をリブ５６，５７の当接面５６ａ，５７ａに装着するには、先ず、接続片１０５の裏面１０５ａにリード線Ｒ１を接続しておく。このリード線Ｒ１を図１３に示すように接続壁８１，８２間に配設するとともに溝６７内に配設する。そして、この摺接板１０１の一端に設けた係合部１０１ａを図２５に示すように係止部９１に係合させるとともに、摺接板１０１を当接面５６ａ，５７ａに当接させる。これにより、溝６６内に配設したリード線Ｒ１は摺接板１０１により閉じ込められた状態となり、溝６６からはみ出ることが防止される。
この状態では、リード線接続部である接続片１０５が配線用溝Ｍ１，Ｍ２と段付溝である溝６７，６９，７１，７３との交差部から周方向に大きく離反した部分に位置させられている。
【００１４】
摺接板１０１の他端に設けた係止片１０１ｂをリブ５７に形成した係止面５７ｇ（図１８及び図２０参照）に当接させるとともに、図２６に示すように押え部１０６の当接片１０６ａを溝６６の底面６６ｈに当接させる。この当接片１０６ａを図２７に示すＣ型のリング部材１１０で固定される。
このリング部材１１０の内側には、係止部材６６ａ，６６ｂ（図１３及び図１４参照）に係合する凹部１１１，１１２が設けられている。このリング部材１１０を溝６６内に挿入させて、図２８に示すように、凹部１１１，１１２を係止部材６６ａ，６８ｂに係合させることにより、リング部材１１０の内周面１１０ａが摺接板１０１の当接片１０６ａを溝６６の底面６６ｈに押え付けた状態となる。これにより、当接片１０６ａは固定され、摺接板１０１は当接面５６ａ，５７ａに装着されることとなる。
【００１５】
同様にして、他の摺接板１０２〜１０４も図２６に示すように当接面５８ａ，５９ａ，６０ａ，６１ａ，６２ａ，６３ａに当接させるとともにリング部材１１０により当接片１０６ａを固定して装着していく。この装着により、図２１に示すように、摺接板１０１〜１０４の突合せ部１０１ｄ〜１０４ｄは一直線上に並ぶ。
そして、筒本体５１の接続部５４の溝Ｕにシール部材Ｖを取り付け、この回転体５０を図１１に示すように操作体４０の操作管４７の保持部４８内に挿入させる。この挿入により、筒本体５１の接続部５４を保持部４８の係合部４８ａに回転可能に係合させて操作管４７と回転体５０とを接続する。この接続により、摺接板１０１〜１０４と接点蓋４９に取り付けた接点４９ｅ〜４９ｈとが接触する。
【００１６】
この回転体５０のホース接続部５２にホース３０を接続する。このホース３０の接続部３１を掃除機本体２０の接続口２３に接続すれば、その接続部３１は電源プラグ３２ａ，３２ｂにより位置が決定され、これにより摺接板１０１〜１０４の突合せ部１０１ｄ〜１０４ｄの位置も電源プラグ３２ａ，３２ｂに対して位置が決定される。他方、接点４９ｅ〜４９ｈの位置を把持部４５に対して所定の位置にすることにより突合せ部１０１ｄ〜１０４ｄを接点４９ｅ〜４９ｈの反対側にすることができる。
すなわち、ホース３０は掃除機本体２０に対して回転不能に接続されるため、電源プラグ３２ａ，３２ｂを基準として、ホース３０の自然状態に対して換言すればホース３０のよじれのない状態に対して突合せ部１０１ｄ〜１０４ｄの位置が決定される。他方、把持部４５は使用時の際に常に上方に位置するため、把持部４５を基準として接点４９ｅ〜４９ｈの位置が決定される。
【００１７】
したがって、ホース３０をよじれない状態にして摺接板１０１〜１０４の突合せ部１０１ｄ〜１０４ｄを接点４９ｅ〜４９ｈの反対側とすることができる。この状態となるように、回転体５０のホース接続部５２にホース３０を接続するものである。
この状態で吸込口体４２を移動させるとその移動する向きによってホース３０がよじれようとするが、回転体５０が操作体４０に対して相対回転するので、ホース３０のよじれは防止される。
【００１８】
【発明が解決しようとする課題】
上述した図９〜図２８に記載の従来の電気掃除機では、図１４、図１７、図１９に示すように、手元操作体４０の筒本体５１の摺接部５３に設けられた環状リブ５７に形成されている狭小の切欠部５７ｃにリード線Ｒ１，Ｒ２２本を環状リブ５７と環状リブ５８とを接続した接続壁８１に形成された突部８１ａによって押え込まなければならず、作業のバラツキ、又は時間の経過にともないリード線Ｒ２，Ｒ１が浮いてくることがある。
そうすると、リード線Ｒ２，Ｒ１は摺接板１０１の下部を摺接板１０１〜１０４と交差するように配設しているため、摺接板の両側面エッジに触れてしまい、リード線Ｒ２，Ｒ１は被覆が有るためにすぐには短絡することはないが、摺接板の両側面エッジや、また掃除動作による前後動作等によりリード線Ｒ２，Ｒ１が徐々に浮き上がり、リード線Ｒ２，Ｒ１の被覆がキズ付けられ、最終的には短絡する恐れがあるという問題点があった。また、Ｒ３，Ｒ４のリード線も同様の問題があった。
【００１９】
また、摺接板１０１を当接面５６ａ，５７ａに最終的に装着させているものは、図２７に示すＣ型リング部材１１０であるが、摺接板の数だけリング部材１１０が必要になり、このため、リング部材１１０を挿入するための溝６６も数だけ必要になり、集塵ホース３０を接続する手元操作体の筒本体５１（内筒）の長さも長くなりまた、部品点数も増加するため望ましくないという問題もあった。
【００２０】
本発明はかかる問題点を解決するためになされたもので、摺接板とリード線の短絡を防止すると共に集塵ホースを接続する手元操作体の内筒の長さを短くし、また部品点数が増えることなく安価な電気掃除機を提供することを目的とするものである。
【００２１】
【課題を解決するための手段】
本発明の電気掃除機は、電気掃除機本体のホース接続口に接続された集塵ホースの端部に回転自在に接続された把持部を有する手元操作体を備え、該手元操作体に手元スイッチを設け、該手元スイッチと前記電気掃除機本体内の制御回路とを接続させるリード線を集塵ホースに沿って設け、前記手元操作体の集塵ホース側端部を内筒と外筒から構成し、前記内筒の外周面に軸方向に間隔を置いて複数のリング状で導電性の摺接板を固定し、前記外筒の内面に前記各摺接板に摺接する接点部材を設け、該摺接板にリード線を接続し、該接点部材に手元スイッチ又は制御回路を接続するようにした電気掃除機において、前記内筒の外周面に間隔を置いて設けた２つの環状リブと、該２つの環状リブの間に軸方向に間隔をおいて周方向に延びる複数の段付溝の途中を切り欠いて形成された保持部材設置スペースと、該保持部材設置スペースの中で前記２つの環状リブのほぼセンターの表面に前記摺接板の数と同じ数だけ所定間隔を置いて設けられたボスと、前記２つの環状リブの内側で保持部材設置スペースの形成位置にそれぞれ設けられた保持部材係止爪部と、前記保持部材設置スペースに嵌合し、かつ該保持部材設置スペースと同じ型の弓なり状に湾曲した保持部材とを備え、前記摺接板の片側端部に前記保持部材設置スペースの各ボスに係合する穴部を有し、リード線が接続されるクランク状のクランク曲げ部を形成し、別の片側端部に穴部を有する逆コの字状曲げ部を形成し、前記保持部材の裏面の片側に前記摺接板の逆コの字状曲げ部の穴部に係合する保持ボスを設け、該保持部材の両側部にそれぞれ前記保持部材係止爪部に係止される段差部を設けて構成したものである。
また、前記保持部材はその表面に段付溝の深さ寸法と同じ深さ寸法を有する段差凹部を前記摺接板の数と同じ数だけ所定間隔を置いて設けている。
さらに、前記２つの環状リブのうち、集塵ホース側の環状リブで保持部材設置スペースの形成位置に前記摺接板の数と同じ数だけ所定間隔を置いて前記リード線を通過させる切欠部を設けている。
【００２２】
【発明の実施の形態】
実施の形態１．
図１は本発明の実施の形態１の電気掃除機の手元操作体の筒本体に２枚の摺接板を組み立てた側面図、図２は同電気掃除機の手元操作体の筒本体に摺接板を組み立てる途中の側面図、図３は同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の斜視図、図４は同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の側面図、図５は同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の裏面図、図６は同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の上面図、図７は同電気掃除機の手元操作体の筒本体に組み付けられる摺接板の斜視図、図８は同電気掃除機の手元操作体の筒本体に４枚の摺接板を組み立てた側面図である。
【００２３】
本発明は手元操作体の筒本体に２枚の摺接板を取り付けるようにしたものに関する。図において従来例と同一の構成は同一符号を付して重複した構成の説明を省略する。
図１及び図２に示すように、一端側に集塵ホースが接続され、他端側に延長管が接続される手元操作体（図示省略）の内筒である筒本体５１の一端側（図の左側）にシール部材を取り付ける段差Ｕに続いて接続部５４の溝があり、その接続部５４に隣接して摺接部５３があり、他端側（図の右側）にホース接続部５２がある。
【００２４】
その筒本体５１の摺接部５３の両側に位置する大きな環状リブ８５と環状リブ８６の間に２枚の摺接板１０１，１０２を配設するための二対の環状リブ５６，５７と５８，５９が設けられている。
これら環状リブ５６，５７と５８，５９の先端は摺接板１０１，１０２の厚み分だけ段差になっており、環状リブ５６，５７の間と環状リブ５８，５９の間に段付溝６７,６９が形成されている。
また、環状リブ５６，５７と５８，５９は後述する保持部材２０１をはめ込むために途中が大きく切り欠かれ、保持部材２０１が大きな環状リブ８５と環状リブ８６に設けられた保持部材係止爪部５１ａ，５１ｂにより具設できるような保持部材設置スペース９０が形成されている。
【００２５】
保持部材設置スペース９０の中で環状リブ５６，５７と５８，５９のほぼセンターに摺接板１０１、１０２を仮止めするボス５１ｃが形成されている。
また、環状リブ８６にはリード線Ｒ１，Ｒ２を集塵ホース側に引き出すための切欠部８８，８９が形成されている。この切欠部８８，８９はリード線Ｒ１，Ｒ２を押さえ込むものではなく、圧入ではないフリーな状態となるように形成されている。
【００２６】
次に、図３〜図６に示す保持部材２０１について説明をする。
図３に示すように、この保持部材２０１は弓なり状に湾曲しており、その弓なり度合いは環状リブ５６，５７と５８，５９と同一径ｒである。
この保持部材２０１の両側に環状リブ８５、８６に設けられた保持部材係止爪部５１ａ，５１ｂに係止させる段差部２１１ａ，２１１ｂが設けられている。また、保持部材２０１の裏面側に摺接板１０１、１０２の逆コの字曲げ部１２１を保持するための保持ボス２２１ａ，２２１ｂが形成されており、また片側がオープンの状態で一段下がった形状をした凹部２３１も形成されている。
また、保持部材２０１の裏面側で両保持ボス２２１ａ，２２１ｂの反対側に摺接板１０１のクランク曲げ部１３１を押える押えリブ２４１が一体に形成されている。さらに、保持部材２０１の上面側には段付溝６７, ６９の深さ寸法と同じ深さ寸法だけ段差凹になっている段差凹部２１２ａ，２１２ｂが弓なりの形状に沿って形成されている。
【００２７】
更に、図７の摺接板１０１について説明する。
この摺接板１０１はその片側端部にクランク状のクランク曲げ部１３１を有し、そのクランク曲げ部１３１の真中部分に保持部材設置スペース９０に形成されたボス５１ｃに掛止するための穴部ａ１３１ａが設けられている。このとき、ボス５１ｃと穴部１３１ａは若干圧入になるの構造が良く、例えばボス５１ｃは略円錐形状に形成されている。そのクランク曲げ部１３１の曲げ部と穴部１３１ａとの間にリード線Ｒ１がスポット溶接又は半田付けされる。このとき、リード線Ｒ２を摺接板１０１にスポット溶接する位置は穴部１３１ａの先にする。こうすることでリード線Ｒ１，Ｒ２を配線するときにリード線同士が乗り上げることはない。
また、摺接板１０１はそのもう一方の片側端部に保持部材２０１の厚さｔとほぼ同一寸法に折り曲げがしてある逆コの字曲げ部１２１を有し、その逆コの字曲げ部１２１の真中部分に保持部材２０１の保持ボス２２１ａを掛止するための穴部ｂ１２１ａが設けられている。
【００２８】
次に、手元操作体の筒本体５１に摺接板１０１、１０２を取り付ける組立手順について説明する。
予めリード線Ｒ１とスポット溶接しておいた摺接板１０１、１０２のクランク曲げ部１３１の穴部１３１ａをそれぞれ筒本体５１の保持部材設置スペース９０に設けられたボス５１ｃに圧入し仮固定する。このとき、摺接板１０１、１０２も仮固定される。
次に、摺接板１０１，１０２を環状リブ５６，５７と５８，５９に沿って途中まで巻き、しかる後に摺接板１０１，１０２を保持部材２０１の表面側の段差凹部２１２に巻き付けてから保持部材２０１の保持ボス２２１ａ、２２１ｂを摺接板１０１，１０２の逆コの字状曲げ部１２１の穴部１２１ａに圧入して固定する。
【００２９】
そして、このように摺接板１０１，１０２の逆コの字状曲げ部１２１が固定された保持部材２０１の段差部２１１ａ，２１１ｂを環状リブ８５、８６に設けられた保持部材係止爪部５１ａ，５１ｂに圧入して保持部材２０１が筒本体５１の保持部材設置スペース９０に固定される。また、保持部材２０１の縦横寸法を保持部材設置スペース９０と同寸法として圧入固定するか、または前記圧入固定を仮固定として超音波等の溶着で確実に固定してもよい。
なお、保持部材２０１を筒本体５１の保持部材設置スペース９０に固定する前に摺接板１０１，１０２のクランク曲げ部１３１にスポット溶接されたリード線Ｒ１、Ｒ２は大きな環状リブ８５、８６に形成された切欠部８８、８９よりホース接続部５２側に引き出しておく。
【００３０】
このようにして仮固定された摺接板１０１は保持部材２０１によって環状リブ５６，５７と５８，５９に周回状態に固定される。このとき、リード線Ｒ１，Ｒ２は環状リブ５６，５７と５８，５９に沿って配線することなく、また環状リブ８６の切欠部８８、８９に圧入することなく、単に集塵ホース３０側に引き出された状態になり、またリード線Ｒ１，Ｒ２の集塵ホース３０側に引き出されていない部分は保持部材２０１の下側になるためリード線Ｒ１，Ｒ２が浮き上がっても、摺接板１０１の端部エッジにふれることはなく、リード線Ｒ１，Ｒ２が短絡するおそれも防止された。
【００３１】
また、保持部材２０１だけで摺接板１０１，１０２を環状リブ５６，５７と５８，５９に固定保持できることにより、従来の摺接板１０１，１０２を固定するリング部材も不要となって部品点数を少なくすることができ、さらにはリング部材を挿入する溝もなくすることができるため、内筒である筒本体５１の長さを短くすることができる。
さらに、リード線Ｒ１，Ｒ２を環状リブ５６，５７と５８，５９に沿って配線することなく、また環状リブ５６，５７と５８，５９に圧入することがないので、配線の作業性も向上した。
【００３２】
上記実施の形態１は摺接板が２枚の場合であるが、摺接板が４枚の場合における摺接板が２枚の場合との違いは、吸込口体に回転ブラシを駆動する駆動モータがあることにより、摺接板が２枚増えたという点にあり、摺接板４枚の場合は摺接板を仮止めするボス５１ｃが４カ所形成されていることと、保持部材２０１の保持ボス２２１ａ、段差凹部２１２ａも４カ所形成されるという構成上の違いだけで、その作用、効果に違いはない。
なお、摺接板にスッポト溶接されるリード線はＲ１とＲ３の位置をずらすことにより、リード線同士が乗り上げることはない。同じようにＲ２とＲ４も位置をずらすことにより、リード線同士が乗り上げることはない。
【００３３】
【発明の効果】
本発明は以上説明したとおり、リード線を接続した摺接板のクランク曲げ部の穴部をそれぞれ集塵ホースの端部に回転自在に接続された把持部を有する手元操作体を構成する内筒の外周面に間隔を置いて設けた２つの環状リブの間に軸方向に間隔をおいて周方向に延びる複数の段付溝の途中を切り欠いて形成された保持部材設置スペースの中で２つの環状リブのほぼセンターの表面に設けられたボスに圧入し仮固定し、各摺接板を各段付溝に沿って途中まで巻き、しかる後に各摺接板を保持部材の表面側に巻き付けてから保持部材の各保持ボスを各摺接板の逆コの字状曲げ部の穴部にそれぞれ圧入して固定した後、摺接板の逆コの字状曲げ部が固定された保持部材の段差部を２つの環状リブに設けられた保持部材係止爪部に圧入して保持部材を内筒の保持部材設置スペースに固定し、仮固定された各摺接板を保持部材によって各段付溝に周回状態に組み付け固定するようにしたので、摺接板のクランク曲げ部に接続されたリード線の集塵ホース側に引き出されていない部分は保持部材の下側になるため、リード線が浮き上がっても、摺接板の端部エッジにふれることはなく、リード線が短絡するおそれも防止されるという効果がある。
また、保持部材だけで複数の摺接板を段付溝に固定保持できることにより、従来の摺接板を固定するリング部材も不要となって部品点数を少なくすることができ、さらにはリング部材を挿入する溝もなくすることができるため、内筒の長さを短くすることができるという効果もある。
さらに、リード線を段付溝に沿って配線することなく、また段付溝に圧入することがないので、配線の作業性も向上するという効果もある。
【００３４】
また、保持部材はその表面に段付溝の深さ寸法と同じ深さ寸法を有する段差凹部を摺接板の数と同じ数だけ所定間隔を置いて設けているので、保持部材があっても段付溝全体に摺接板を装着したのと同じようにきれいに装着されるという効果がある。
【００３５】
さらに、２つの環状リブのうち、集塵ホース側の環状リブで保持部材設置スペースの形成位置に摺接板の数と同じ数だけ所定間隔を置いてリード線を通過させる切欠部を設けているので、摺接板のクランク曲げ部に接続されたリード線は環状リブに形成された切欠部よりホース接続部側に引き出しておくだけでよく、圧入することがないので配線の作業性が向上する。
【図面の簡単な説明】
【図１】本発明の実施の形態１の電気掃除機の手元操作体の筒本体に２枚の摺接板を組み立てた側面図である。
【図２】同電気掃除機の手元操作体の筒本体に摺接板を組み立てる途中の側面図である。
【図３】同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の斜視図である。
【図４】同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の側面図である。
【図５】同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の裏面図である。
【図６】同電気掃除機の手元操作体の筒本体に組み付けられる保持部材の上面図である。
【図７】同電気掃除機の手元操作体の筒本体に組み付けられる摺接板の斜視図である。
【図８】同電気掃除機の手元操作体の筒本体に４枚の摺接板を組み立てた側面図である。
【図９】従来の電気掃除機の外観を示した斜視図である。
【図１０】同電気掃除機の手元操作体を示した側面図である。
【図１１】同電気掃除機の手元操作体を示した断面図である。
【図１２】同電気掃除機の手元操作体に組み付けられる端子板を示した平面図である。
【図１３】同電気掃除機の手元操作体の筒本体を示した側面図である。
【図１４】図１３の反対側を示した側面図である。
【図１５】同電気掃除機の手元操作体の筒本体を示した縦断面図である。
【図１６】同電気掃除機の手元操作体の筒本体を示した横断面図である。
【図１７】同電気掃除機の手元操作体の筒本体を示した横断面図である。
【図１８】同電気掃除機の手元操作体の筒本体を示した横断面図である。
【図１９】図１３の一部を拡大した拡大図である。
【図２０】図１４の一部を拡大した拡大図である。
【図２１】同電気掃除機の手元操作体の筒本体にリング部材により摺接板を装着した状態を示した側面図である。
【図２２】同電気掃除機の手元操作体の筒本体に装着した摺接板を断面にして筒本体を示した側面図である。
【図２３】同電気掃除機の手元操作体の筒本体に装着される摺接板を示した側面図である。
【図２４】図２３の摺接板の両端部を拡大した斜視図である。
【図２５】図１０のＡ−Ａ線に沿う断面図である。
【図２６】同電気掃除機の手元操作体の筒本体に摺接板を装着した状態を示した側面図である。
【図２７】同電気掃除機の手元操作体の筒本体に装着されるリング部材を示した正面図である。
【図２８】図１０のＢ−Ｂ線に沿う断面図である。
フである。
【符号の説明】
５１筒本体（内筒）、５１ａ, ５１ｂ保持部材係止爪部、５１ｃボス、６７,６９溝（段付溝）、８５,８６環状リブ、９０保持部材設置スペース、１０１,１０２摺接板、１２１逆コの字曲げ部、１２１ａ穴部、１３１クランク曲げ部、１３１ａ穴部、２０１保持部材、２１１ａ，２１１ｂ段差部、２２１ａ，２２１ｂ保持ボス、Ｒ１,Ｒ２リード線。[0001]
BACKGROUND OF THE INVENTION
The present invention is capable of rotating the end portion of a dust collecting hose connected to the vacuum cleaner body in the circumferential direction with respect to a vacuum cleaner, particularly a hand-operated body having a grip connected to an extension pipe having a suction port at the tip. It is related with the vacuum cleaner which prevented the twisting of the dust collecting hose even if the dust collecting hose rotates in the circumferential direction.
[0002]
[Prior art]
9 to 28 show a conventional vacuum cleaner described in, for example, Japanese Patent Application Laid-Open No. 7-67819.
In FIG. 9, 20 is a vacuum cleaner main body. In the electric vacuum cleaner main body 20, a dust collection filter 22 installed in the dust collection chamber 21, an electric blower 23 that makes the dust collection chamber 21 have a negative pressure, and a control circuit (not shown) that controls the electric blower 23. ) Etc. are provided. Further, the electric cleaning main body 20 is provided with a connection port 25 communicating with the inside of the dust collection filter 22. The connection port 25 is provided with a power supply connection portion 26 connected to the power supply circuit of the control circuit and a signal connection portion 27 connected to a blower control circuit (not shown) of the control circuit for controlling the electric blower 23. Yes.
[0003]
A dust collection hose 30 is provided with a connection part 31 (first connection cylinder part) that is detachably connected to the connection port 25 at one end of the dust collection hose 30. The connection portion 31 is provided with power plugs 32 a and 32 b connected to the power connection portion 26 and signal connection pins 33 a and 33 b connected to the signal connection portion 27.
Around the dust collecting hose 30, spiral wiring portions SP and SS are integrally formed up to both ends of the hose. Conductive and springy lead wires R1 'and R2', one end of which is connected to the power plugs 32a and 32b, are fixed in the spiral wiring portion SP so as to extend along the spiral portion SP. Conductive and springy lead wires R1 'and R2' having one end connected to the connection pins 33a and 33b are fixed inside. Flexible lead wires R1, R2, R3, and R4 are connected to the other ends of the lead wires R1 ′, R2 ′, R3 ′, and R4 ′.
[0004]
Reference numeral 40 denotes an operating body (second connecting cylinder), 41 denotes an extension pipe, and 42 denotes a suction port. The suction port body 42 is provided with a rotary brush 43 that is a rotary cleaning body and a drive motor 44 that rotates the rotary brush 43.
As shown in FIGS. 10 and 11, the operating body 40 includes a gripping portion 45, an operating portion 46, and an operating tube 47 (outer cylinder). The operating portion 46 includes a drive motor 44 for the rotating brush 43. An operation switch S1 for turning on / off the power, an operation switch S2 for setting the strength of the electric blower 23, an operation switch S3 for controlling the electric blower 23 according to the type of the cleaning object, and an operation switch S4 for turning on / off the electric blower 23 And are provided.
[0005]
A connection port 47 a for connecting the extension tube 41 is provided at one end of the operation tube 47, and a holding portion 48 for holding the rotating body 50 is provided at the other end of the operation tube 47. An engaging portion 48a is formed on the inner peripheral surface on one end side of the holding portion 48 so as to freely engage a connecting portion 54 described later, and an opening 48b is formed on the upper side of the holding portion 48. A contact lid 49 is attached.
As shown in FIG. 12, the contact lid 49 is provided with bifurcated contact plates 49a to 49d, and the contact plates 49a to 49d are provided with contacts 49c to 49h. The contact plates 49a and 49b are connected to the power supply lines L1 and L2 for the drive motor 44, and the contact plates 49c and 49d are connected to the signal lines L3 and L4.
[0006]
As shown in FIG. 11, the signal lines L3 and L4 are connected to a circuit (not shown) of a circuit board G provided in the operation body 40. The power supply sources L1 and L2 are directly connected to the drive motor 44.
As shown in FIGS. 13 to 15, the rotating body 50 includes a cylinder main body 51 (inner cylinder). The cylinder main body 51 includes a hose connection portion 52 that connects and fixes the other end of the dust collection hose 30, and a sliding contact portion. 53 and a connecting portion 54 that is rotatably connected to the holding portion 48 is provided. T is a protrusion for fixing the dust collecting hose 30, and U is a groove for attaching a seal member.
The sliding contact portion 53 is provided with annular ribs 55 to 65 extending in the circumferential direction in order from the left at a predetermined interval, and grooves 66 to 73 are formed between the annular ribs 55 to 63. It has become.
[0007]
Between the annular rib 55 and the annular rib 56, a pair of locking members 66 a and 66 b connecting the annular ribs 55 and 56 are formed symmetrically with respect to the axis Q. Similarly, between the annular ribs 57 and 58, locking members 68a and 68b connecting the annular ribs 57 and 58 are formed as shown in FIG. A pair of locking members 70a, 70b, 72a, 72b connecting the annular ribs are formed between the annular ribs 59 and 60 and the annular ribs 61 and 62, respectively.
The annular ribs 56 to 63 are formed with contact surfaces 56a to 63a (steps) on the side of the grooves 67, 69, 71 and 73 so as to be lowered by one step with respect to the axis Q, and the contact surfaces 56a to 63a. The (step portion) has grooves 67, 69, 71, 73 as stepped grooves. The contact surfaces 56a to 63a extend along the circumferential direction of the cylinder body 51 and are formed at positions spaced apart from the axis Q by a certain distance.
[0008]
The annular rib 57 is provided with two narrow notches 57c and 57d as shown in FIG. Similarly, as shown in FIGS. 18 and 19, the annular ribs 58 to 64 are provided with notches 58c to 64c and 58d to 64d at the same positions as the notches 57c and 57d, respectively.
Connection walls 81 to 84 connecting the annular rib 57 and the annular rib 58 are formed at the positions of the notches 57c and 57d. Similarly, connecting walls 81 to 84 connecting the annular ribs 59 and 60, the annular ribs 61 and 62, and the annular ribs 63 and 64 are formed at the positions of the other notches 58c to 64c and 58d to 64d.
[0009]
Projection portions 81a and 84a are formed on the connection walls 81 and 84, and wiring end portions (the other end portions) of the lead wires R1 and R2 are disposed in the wiring groove M1 between the connection wall 81 and the connection wall 82. Then, the wiring ends of the lead wires R1 and R2 are pressed down by the protrusion 81a. Similarly, wiring ends (other end portions) of the lead wires R3 and R4 are disposed in the wiring groove M2 between the connection wall 83 and the connection wall 84, and the lead wires R3 and R4 are formed by the protrusions 84a. The wiring end is pressed in (see FIG. 13). A plurality of wiring grooves M1 are arranged in series in the axial direction of the cylinder main body 51 as an inner cylinder, and similarly, a plurality of wiring grooves M2 are arranged in series in the axial direction of the cylinder main body 51 as an inner cylinder. In addition, the wiring grooves M1 and M2 are disposed adjacent to each other in the circumferential direction of the cylinder body 51.
[0010]
The annular rib 56 is provided with two relatively large notches 56e and 56f at positions opposite to the positions of the notches 57c and 57d as shown in FIG. Similarly, the annular ribs 58, 60, 62 are also provided with notches 58e, 58f, 60e, 60f, 62e, 62f at the same positions as the notches 56e, 56f, respectively.
A locking portion 91 having a recess 91a is formed integrally with the rib 57 between the notch portion 56e and the notch portion 56f (see FIG. 17). Similarly, engaging portions 92 to 94 having recesses 92a to 94a formed between the notches 58e, 60e, and 62e and the notches 58f, 60f, and 62f are formed integrally and continuously with the ribs 59, 61, and 63. Each locking part 91-94 is located in a line along the axial direction.
[0011]
Upper surfaces 91b to 94b of the locking portions 91 to 94 are flush with the contact surfaces 57a, 59a, 61a, and 63a. Further, as shown in FIG. 17, the annular rib 57 is formed with a locking surface 57 g that is opposed to the locking portion 91 and that is orthogonal to the contact surface 57 a and extends toward the axis Q. Similarly, the annular ribs 59, 61, 63 are provided with locking surfaces 59 g that are opposed to the locking portions 92 to 94 and that are orthogonal to the contact surfaces 57 a, 59 a, 61 a, 63 a and extend toward the axis Q. , 61g, 63g are formed.
The contact surfaces 56a and 57a, the contact surfaces 58a and 59a, the contact surfaces 60a and 61a, and the contact surfaces 62a and 63a are electrically conductive sliding contact plates 101 to 49d that are in sliding contact with the contacts 49a to 49d (see FIG. 12). 104 is mounted in a ring shape as shown in FIGS.
[0012]
As shown in FIGS. 23 and 24, the sliding contact plate 101 is formed with an engaging portion 101a bent in an L shape that engages with the engaging portion 91 of the rib 57 at one end and the engaging portion at the other end. A locking piece 101b that contacts and locks against the stop surface 57g is formed in a suspended state in FIG. Further, the sliding contact plate 101 is formed with a connecting piece 105 (lead wire connecting portion) for connecting the lead wire R1 on the side portion on one end side, and a holding portion formed in an L shape on the side portion on the other end side. 106 is formed. A contact piece 106a, which is the bottom of the presser portion 106, comes into contact with the bottom surface 66h of the groove 66 at the position of the notch portion 56f. Since the other sliding contact plates 102 to 104 are also configured in exactly the same manner, description thereof is omitted.
[0013]
In order to attach the sliding contact plate 101 to the contact surfaces 56 a and 57 a of the ribs 56 and 57, first, the lead wire R 1 is connected to the back surface 105 a of the connection piece 105. As shown in FIG. 13, the lead wire R <b> 1 is disposed between the connection walls 81 and 82 and disposed in the groove 67. Then, the engaging portion 101a provided at one end of the sliding contact plate 101 is engaged with the locking portion 91 as shown in FIG. 25, and the sliding contact plate 101 is brought into contact with the contact surfaces 56a and 57a. As a result, the lead wire R1 disposed in the groove 66 is confined by the sliding contact plate 101 and is prevented from protruding from the groove 66.
In this state, the connecting piece 105 that is the lead wire connecting portion is positioned at a portion that is greatly separated in the circumferential direction from the intersection of the wiring grooves M1 and M2 and the grooves 67, 69, 71, and 73 that are stepped grooves. ing.
[0014]
A locking piece 101b provided at the other end of the sliding contact plate 101 is brought into contact with a locking surface 57g (see FIGS. 18 and 20) formed on the rib 57, and as shown in FIG. The piece 106 a is brought into contact with the bottom surface 66 h of the groove 66. The contact piece 106a is fixed by a C-shaped ring member 110 shown in FIG.
On the inner side of the ring member 110, recesses 111 and 112 that engage with the locking members 66a and 66b (see FIGS. 13 and 14) are provided. By inserting the ring member 110 into the groove 66 and engaging the recesses 111 and 112 with the locking members 66a and 68b as shown in FIG. 28, the inner peripheral surface 110a of the ring member 110 is slidable. The contact piece 106 a of 101 is pressed against the bottom surface 66 h of the groove 66. Thereby, the contact piece 106a is fixed, and the sliding contact plate 101 is attached to the contact surfaces 56a and 57a.
[0015]
Similarly, as shown in FIG. 26, the other slidable contact plates 102 to 104 are brought into contact with the contact surfaces 58a, 59a, 60a, 61a, 62a, 63a and the contact piece 106a is fixed by the ring member 110. Install it. By this mounting, as shown in FIG. 21, the butted portions 101d to 104d of the sliding contact plates 101 to 104 are aligned on a straight line.
And the sealing member V is attached to the groove | channel U of the connection part 54 of the cylinder main body 51, and this rotary body 50 is inserted in the holding | maintenance part 48 of the operation tube 47 of the operation body 40 as shown in FIG. By this insertion, the operation tube 47 and the rotating body 50 are connected by rotatably engaging the connecting portion 54 of the cylinder main body 51 with the engaging portion 48 a of the holding portion 48. By this connection, the sliding contact plates 101 to 104 come into contact with the contacts 49e to 49h attached to the contact lid 49.
[0016]
The hose 30 is connected to the hose connection part 52 of the rotating body 50. If the connection part 31 of this hose 30 is connected to the connection port 23 of the cleaner main body 20, the position of the connection part 31 is determined by the power plugs 32a and 32b, whereby the abutting parts 101d to 101d of the sliding contact plates 101 to 104 are obtained. The position of 104d is also determined with respect to the power plugs 32a and 32b. On the other hand, the abutting portions 101d to 104d can be placed on the opposite side of the contacts 49e to 49h by setting the positions of the contacts 49e to 49h to a predetermined position with respect to the grip portion 45.
That is, since the hose 30 is non-rotatably connected to the cleaner body 20, the hose 30 is not kinked with respect to the natural state of the hose 30 with reference to the power plugs 32 a and 32 b. The positions of the abutting portions 101d to 104d are determined. On the other hand, since the gripping part 45 is always positioned upward during use, the positions of the contacts 49e to 49h are determined based on the gripping part 45.
[0017]
Accordingly, the abutting portions 101d to 104d of the sliding contact plates 101 to 104 can be placed on the opposite side of the contacts 49e to 49h with the hose 30 not twisted. The hose 30 is connected to the hose connection part 52 of the rotating body 50 so as to be in this state.
If the suction port body 42 is moved in this state, the hose 30 tends to be twisted depending on the moving direction, but the rotating body 50 rotates relative to the operating body 40, so that the hose 30 is prevented from being twisted.
[0018]
[Problems to be solved by the invention]
In the conventional vacuum cleaner described above with reference to FIGS. 9 to 28, as shown in FIGS. 14, 17, and 19, the annular rib 57 provided on the sliding contact portion 53 of the cylinder body 51 of the hand operating body 40. The two lead wires R1 and R2 must be pressed into the narrow notch 57c formed by the projection 81a formed on the connecting wall 81 connecting the annular rib 57 and the annular rib 58. The lead wires R2 and R1 may float with variation or over time.
Then, since the lead wires R2 and R1 are arranged so that the lower portion of the sliding contact plate 101 intersects the sliding contact plates 101 to 104, the lead wires R2 and R1 touch both side edges of the sliding contact plate, and the lead wires R2 and R1. Is not short-circuited immediately because of the covering, but the lead wires R2 and R1 are gradually lifted by the edges on both sides of the sliding contact plate and the front and rear movements by the cleaning operation, and the covering of the lead wires R2 and R1 However, there was a problem that there was a risk of short-circuiting. The lead wires R3 and R4 have the same problem.
[0019]
Further, what is finally attached to the contact surfaces 56a and 57a is the C-shaped ring member 110 shown in FIG. 27, but the ring members 110 are required as many as the number of the slide contact plates. Therefore, the number of grooves 66 for inserting the ring member 110 is also required, the length of the cylinder body 51 (inner cylinder) of the hand operating body for connecting the dust collecting hose 30 is increased, and the number of parts is also increased. Therefore, there was a problem that it was not desirable.
[0020]
The present invention has been made to solve such a problem, and prevents the short circuit between the sliding contact plate and the lead wire, shortens the length of the inner cylinder of the hand operating body to which the dust collecting hose is connected, and reduces the number of parts. It aims at providing a cheap vacuum cleaner without increasing.
[0021]
[Means for Solving the Problems]
The vacuum cleaner of the present invention includes a hand operating body having a gripping part rotatably connected to an end of a dust collecting hose connected to a hose connection port of a vacuum cleaner body, and a hand switch is provided on the hand operating body. A lead wire for connecting the hand switch and the control circuit in the main body of the electric vacuum cleaner is provided along the dust collecting hose, and the dust collecting hose side end of the hand operating body is composed of an inner cylinder and an outer cylinder. A plurality of ring-shaped conductive sliding contact plates are fixed to the outer peripheral surface of the inner cylinder at axial intervals, and contact members are provided on the inner surface of the outer cylinder for sliding contact with the sliding contact plates; In an electric vacuum cleaner in which a lead wire is connected to the sliding contact plate and a hand switch or a control circuit is connected to the contact member, two annular ribs provided at intervals on the outer peripheral surface of the inner cylinder, A plurality extending in the circumferential direction with an axial interval between the two annular ribs A holding member installation space which is formed by cutting the middle of the stepped groove, of the holding member installation space In the center of the two annular ribs Bosses provided on the surface at the same number as the number of the sliding contact plates, and holding member locking claws provided respectively at the formation positions of the holding member installation spaces inside the two annular ribs. A holding member that fits into the holding member installation space and is curved in the shape of a bow of the same type as the holding member installation space, and is attached to each boss of the holding member installation space at one end of the sliding contact plate. Forming a crank-shaped crank bent portion having a hole portion to be engaged, to which a lead wire is connected, forming an inverted U-shaped bent portion having a hole portion on another one-side end portion, and Stepped portions provided on one side of the back surface with holding bosses that engage with holes in the inverted U-shaped bent portion of the sliding contact plate, and are respectively engaged with the holding member locking claws on both sides of the holding member. Is provided.
Further, the holding member has a stepped recess having a depth dimension equal to the depth dimension of the stepped groove on the surface thereof. Said The same number as the number of sliding plates is provided at a predetermined interval.
Further, of the two annular ribs, the annular rib on the dust collecting hose side is provided with a notch for allowing the lead wire to pass therethrough at a predetermined interval equal to the number of the sliding contact plates at the formation position of the holding member installation space. Provided.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
FIG. 1 is a side view in which two sliding contact plates are assembled to the cylinder body of the hand operating body of the electric vacuum cleaner according to Embodiment 1 of the present invention, and FIG. The side view in the middle of assembling the contact plate, FIG. 3 is a perspective view of the holding member assembled to the cylinder body of the hand operating body of the vacuum cleaner, and FIG. 4 is the holding assembled to the cylinder body of the hand operating body of the vacuum cleaner. FIG. 5 is a back view of the holding member assembled to the cylinder body of the hand operating body of the electric vacuum cleaner, and FIG. 6 is a top view of the holding member assembled to the tube main body of the hand operating body of the electric vacuum cleaner. 7 is a perspective view of a sliding contact plate assembled to the cylinder body of the hand operating body of the electric vacuum cleaner, and FIG. 8 is a side view of four sliding contact plates assembled to the tube main body of the hand operating body of the electric vacuum cleaner. FIG.
[0023]
The present invention relates to a structure in which two sliding contact plates are attached to a cylinder main body of a hand operating body. In the figure, the same components as those of the conventional example are denoted by the same reference numerals, and the description of the overlapping components is omitted.
As shown in FIGS. 1 and 2, one end side of a cylinder main body 51, which is an inner cylinder of a hand operating body (not shown) having a dust collecting hose connected to one end side and an extension pipe connected to the other end side (see FIG. 1). (On the left side) is a groove U of the connecting portion 54 following the step U for attaching the seal member, the sliding contact portion 53 is adjacent to the connecting portion 54, and the hose connecting portion 52 is on the other end side (right side in the figure). is there.
[0024]
Two pairs of annular ribs 56, 57 and 58 for disposing two sliding contact plates 101 and 102 between the large annular rib 85 and the annular rib 86 located on both sides of the sliding contact portion 53 of the cylinder body 51. , 59 are provided.
The tips of the annular ribs 56, 57 and 58, 59 are stepped by the thickness of the sliding contact plates 101, 102, and stepped grooves 67, 57 are formed between the annular ribs 56, 57 and between the annular ribs 58, 59. 69 is formed.
Also, the annular ribs 56, 57 and 58, 59 are notched in the middle to fit a holding member 201 described later, and the holding member 201 is provided on the large annular rib 85 and the annular rib 86. A holding member installation space 90 that can be provided by 51a and 51b is formed.
[0025]
In the holding member installation space 90, a boss 51c for temporarily fixing the sliding contact plates 101 and 102 is formed at substantially the center of the annular ribs 56, 57 and 58, 59.
The annular rib 86 is formed with notches 88 and 89 for drawing out the lead wires R1 and R2 to the dust collecting hose side. The notches 88 and 89 do not hold down the lead wires R1 and R2, but are formed in a free state that is not press-fitted.
[0026]
Next, the holding member 201 shown in FIGS. 3 to 6 will be described.
As shown in FIG. 3, the holding member 201 is curved in a bow shape, and the bow degree is the same diameter r as the annular ribs 56, 57 and 58, 59.
On both sides of the holding member 201, stepped portions 211a and 211b are provided to be engaged with holding member locking claws 51a and 51b provided on the annular ribs 85 and 86, respectively. Also, holding bosses 221a and 221b for holding the inverted U-shaped bent portions 121 of the sliding contact plates 101 and 102 are formed on the back surface side of the holding member 201, and the shape is lowered one step with one side open. A recessed portion 231 is also formed.
In addition, a holding rib 241 for pressing the crank bending portion 131 of the sliding contact plate 101 is integrally formed on the back side of the holding member 201 on the opposite side of the both holding bosses 221a and 221b. Further, stepped recesses 212a and 212b are formed along the shape of a bow on the upper surface side of the holding member 201. The stepped recesses 212a and 212b are stepped by the same depth as the stepped grooves 67 and 69.
[0027]
Further, the sliding contact plate 101 of FIG. 7 will be described.
This sliding contact plate 101 has a crank-shaped crank bent portion 131 at one end portion thereof, and a hole portion for hooking on a boss 51c formed in the holding member installation space 90 at the middle portion of the crank bent portion 131. a131a is provided. At this time, the boss 51c and the hole 131a are preferably slightly press-fitted. For example, the boss 51c is formed in a substantially conical shape. The lead wire R1 is spot welded or soldered between the bent portion of the crank bent portion 131 and the hole portion 131a. At this time, the position where the lead wire R2 is spot welded to the sliding contact plate 101 is set to the tip of the hole 131a. By doing so, the lead wires do not run over when the lead wires R1, R2 are wired.
Further, the sliding contact plate 101 has an inverted U-shaped bent portion 121 which is bent at substantially the same dimension as the thickness t of the holding member 201 at the other one end thereof, and the inverted U-shaped bent portion. A hole b121a for hooking the holding boss 221a of the holding member 201 is provided in the middle part of 121.
[0028]
Next, an assembly procedure for attaching the sliding contact plates 101 and 102 to the cylinder body 51 of the hand operating body will be described.
The holes 131a of the crank bent portions 131 of the sliding contact plates 101 and 102 that have been spot welded to the lead wire R1 are press-fitted into the bosses 51c provided in the holding member installation space 90 of the cylinder main body 51 and temporarily fixed. At this time, the sliding contact plates 101 and 102 are also temporarily fixed.
Next, the slidable contact plates 101 and 102 are wound halfway along the annular ribs 56, 57 and 58 and 59, and then the slidable contact plates 101 and 102 are wound around the stepped recesses 212 on the surface side of the holding member 201 and then held. The holding bosses 221 a and 221 b of the member 201 are press-fitted into the hole 121 a of the inverted U-shaped bent portion 121 of the sliding contact plates 101 and 102 and fixed.
[0029]
Then, the step portions 211a and 211b of the holding member 201 to which the inverted U-shaped bent portions 121 of the sliding contact plates 101 and 102 are fixed in this manner are used as the holding member locking claw portions 51a provided on the annular ribs 85 and 86, respectively. , 51b and the holding member 201 is fixed to the holding member installation space 90 of the cylinder body 51. Alternatively, the holding member 201 may be fixed by press-fitting with the same vertical and horizontal dimensions as the holding member installation space 90, or may be securely fixed by ultrasonic welding or the like, with the press-fitting fixed temporarily.
The lead wires R1 and R2 spot welded to the crank bending portion 131 of the sliding contact plates 101 and 102 before the holding member 201 is fixed to the holding member installation space 90 of the cylinder body 51 are formed on the large annular ribs 85 and 86. The cutout portions 88 and 89 are pulled out to the hose connection portion 52 side.
[0030]
The sliding contact plate 101 temporarily fixed in this way is fixed to the annular ribs 56, 57 and 58, 59 in a rotating state by the holding member 201. At this time, the lead wires R1, R2 are simply drawn out to the dust collecting hose 30 side without being wired along the annular ribs 56, 57 and 58, 59 and without being pressed into the notches 88, 89 of the annular rib 86. The portion of the lead wires R1 and R2 that is not pulled out to the dust collecting hose 30 side is on the lower side of the holding member 201, so even if the lead wires R1 and R2 are lifted, the end of the sliding contact plate 101 The edge of the part was not touched, and the possibility that the lead wires R1 and R2 were short-circuited was prevented.
[0031]
In addition, since the sliding contact plates 101 and 102 can be fixedly held to the annular ribs 56, 57 and 58 and 59 only by the holding member 201, the conventional ring member for fixing the sliding contact plates 101 and 102 becomes unnecessary, and the number of parts can be reduced. Since the number of grooves can be reduced and the groove for inserting the ring member can be eliminated, the length of the cylinder main body 51 that is the inner cylinder can be shortened.
Further, since the lead wires R1, R2 are not wired along the annular ribs 56, 57 and 58, 59, and are not press-fitted into the annular ribs 56, 57, 58, 59, the workability of the wiring is improved. .
[0032]
The first embodiment is a case where there are two sliding contact plates, but the difference between the case where there are four sliding contact plates and two sliding contact plates is that the rotary brush is driven to the suction port body. The presence of the motor increases the number of sliding contact plates by two. In the case of four sliding contact plates, four bosses 51c for temporarily fixing the sliding contact plates are formed. There are no differences in the function and effect of the holding boss 221a and the stepped recesses 212a, which are only formed in four locations.
Note that the lead wires spot welded to the sliding contact plate do not run over each other by shifting the positions of R1 and R3. Similarly, the lead wires do not run over each other by shifting the positions of R2 and R4.
[0033]
【The invention's effect】
As described above, the present invention provides an inner cylinder that constitutes a hand operating body having a gripping portion in which a hole of a crank bending portion of a sliding plate connected to a lead wire is rotatably connected to an end portion of a dust collecting hose. A holding member installation space formed by cutting out a plurality of stepped grooves extending in the circumferential direction at intervals in the axial direction between two annular ribs provided at intervals on the outer peripheral surface of In the center of the two annular ribs Press-fit into the boss, temporarily fix it, wind each sliding contact plate halfway along each stepped groove, then wind each sliding contact plate around the surface of the holding member, and then touch each holding boss of the holding member to each sliding contact After pressing and fixing into the holes of the inverted U-shaped bent portion of the plate, the stepped portions of the holding member to which the inverted U-shaped bent portion of the sliding contact plate was fixed were provided on the two annular ribs. The holding member is fixed to the holding member installation space of the inner cylinder by press-fitting into the holding member locking claw, and each temporarily fixed sliding contact plate is assembled and fixed to each stepped groove by the holding member. Therefore, the portion of the lead wire that is connected to the crank bending portion of the sliding contact plate that is not pulled out to the dust collecting hose side is on the lower side of the holding member, so even if the lead wire is lifted, the end edge of the sliding contact plate There is an effect that the possibility that the lead wire is short-circuited is prevented.
In addition, since a plurality of sliding contact plates can be fixed and held in the stepped groove only by the holding member, a conventional ring member for fixing the sliding contact plate is not required, and the number of parts can be reduced. Since the insertion groove can be eliminated, there is an effect that the length of the inner cylinder can be shortened.
Further, since the lead wire is not wired along the stepped groove and is not press-fitted into the stepped groove, the workability of wiring is also improved.
[0034]
Further, since the holding member is provided with stepped recesses having the same depth as the stepped groove on the surface at the same number as the number of sliding plates, even if there is a holding member There is an effect that it is mounted neatly in the same manner as the sliding contact plate is mounted on the entire stepped groove.
[0035]
Further, of the two annular ribs, the annular rib on the dust collecting hose side is provided with a notch portion through which the lead wire passes at a predetermined interval as many as the number of the sliding contact plates at the formation position of the holding member installation space. Therefore, the lead wire connected to the crank bending portion of the slidable contact plate only needs to be pulled out from the notch portion formed in the annular rib to the hose connection portion side, and is not press-fitted, so that the workability of wiring is improved. .
[Brief description of the drawings]
FIG. 1 is a side view in which two sliding contact plates are assembled to a cylinder body of a hand operating body of a vacuum cleaner according to Embodiment 1 of the present invention.
FIG. 2 is a side view in the middle of assembling the sliding contact plate on the cylinder body of the hand operating body of the vacuum cleaner.
FIG. 3 is a perspective view of a holding member assembled to a cylinder body of a hand operating body of the electric vacuum cleaner.
FIG. 4 is a side view of a holding member assembled to a cylinder body of a hand operating body of the vacuum cleaner.
FIG. 5 is a rear view of the holding member assembled to the cylinder body of the hand operating body of the electric vacuum cleaner.
FIG. 6 is a top view of a holding member assembled to a cylinder body of a hand operating body of the vacuum cleaner.
FIG. 7 is a perspective view of a sliding contact plate assembled to a cylinder body of a hand operating body of the electric vacuum cleaner.
FIG. 8 is a side view in which four sliding plates are assembled to the cylinder body of the hand operating body of the electric vacuum cleaner.
FIG. 9 is a perspective view showing an appearance of a conventional electric vacuum cleaner.
FIG. 10 is a side view showing a hand operating body of the electric vacuum cleaner.
FIG. 11 is a cross-sectional view showing a hand operating body of the electric vacuum cleaner.
FIG. 12 is a plan view showing a terminal board to be assembled to a hand operating body of the electric vacuum cleaner.
FIG. 13 is a side view showing a tube body of a hand operating body of the electric vacuum cleaner.
14 is a side view showing the opposite side of FIG. 13;
FIG. 15 is a longitudinal sectional view showing a tube body of a hand operating body of the electric vacuum cleaner.
FIG. 16 is a cross-sectional view showing a tube body of a hand operating body of the electric vacuum cleaner.
FIG. 17 is a cross-sectional view showing a tube body of a hand operating body of the electric vacuum cleaner.
FIG. 18 is a cross-sectional view showing a tube body of a hand operating body of the electric vacuum cleaner.
FIG. 19 is an enlarged view of a part of FIG. 13;
FIG. 20 is an enlarged view of a part of FIG.
FIG. 21 is a side view showing a state in which the sliding contact plate is attached to the cylinder main body of the hand operating body of the electric vacuum cleaner by a ring member.
FIG. 22 is a side view showing the cylinder main body with a cross section of a sliding contact plate mounted on the cylinder main body of the hand operating body of the electric vacuum cleaner.
FIG. 23 is a side view showing a sliding contact plate mounted on the cylinder body of the hand operating body of the electric vacuum cleaner.
24 is an enlarged perspective view of both ends of the sliding contact plate of FIG. 23. FIG.
25 is a cross-sectional view taken along line AA in FIG.
FIG. 26 is a side view showing a state in which a sliding contact plate is attached to the cylinder body of the hand operating body of the electric vacuum cleaner.
FIG. 27 is a front view showing a ring member attached to a cylinder body of a hand operating body of the electric vacuum cleaner.
28 is a cross-sectional view taken along line BB in FIG.
It is fu.
[Explanation of symbols]
51 cylinder body (inner cylinder), 51a, 51b holding member locking claw, 51c boss, 67,69 groove (stepped groove), 85,86 annular rib, 90 holding member installation space, 101,102 sliding plate, 121 reverse U-shaped bent portion, 121a hole portion, 131 crank bent portion, 131a hole portion, 201 holding member, 211a, 211b stepped portion, 221a, 221b holding boss, R1, R2 lead wire.

Claims

Provided with a hand operating body having a gripping part rotatably connected to an end of a dust collecting hose connected to a hose connection port of a vacuum cleaner body, the hand operating body is provided with a hand switch, the hand switch and the A lead wire for connecting a control circuit in the main body of the vacuum cleaner is provided along the dust collection hose, and the dust collection hose side end portion of the hand operating body is constituted by an inner cylinder and an outer cylinder, and the outer peripheral surface of the inner cylinder A plurality of ring-shaped conductive sliding contact plates are fixed at intervals in the axial direction, and a contact member is provided on the inner surface of the outer cylinder for sliding contact with each sliding contact plate. Lead wires are provided on the sliding contact plates. In a vacuum cleaner connected and connected to a hand switch or control circuit to the contact member,
Two annular ribs provided at intervals on the outer peripheral surface of the inner cylinder, and a plurality of stepped grooves extending in the circumferential direction at intervals in the axial direction between the two annular ribs. A holding member installation space, and a boss provided in the holding member installation space on the surface of the center of the two annular ribs at the same number as the number of the sliding contact plates, and the 2 Holding member locking claws provided at the positions where the holding member installation space is formed inside the two annular ribs, and fitted into the holding member installation space and curved in a bow shape having the same diameter as the holding member installation space Holding member,
The sliding contact plate has a hole portion that engages with each boss of the holding member installation space at one end portion, and a crank-shaped crank bending portion to which a lead wire is connected is formed, and a hole is formed at another one end portion. A holding boss that engages with a hole in the reverse U-shaped bent portion of the sliding contact plate is provided on one side of the back surface of the holding member. A vacuum cleaner characterized in that a stepped portion that is locked by the holding member locking claw portion is provided on each side portion.

The holding member according to Claim 1, characterized in that arranged at the same number by a predetermined distance and the number of the stepped recess the sliding contact plate having the same depth as the depth of the stepped groove in the surface Electric vacuum cleaner.

Of the two annular ribs, the annular rib on the dust collecting hose side is provided with a notch for allowing the lead wire to pass through at a predetermined interval equal to the number of the sliding contact plates at the position where the holding member installation space is formed. The vacuum cleaner according to claim 1.