JP3635680B2

JP3635680B2 - Battery holder

Info

Publication number: JP3635680B2
Application number: JP14591994A
Authority: JP
Inventors: 倫久杉本; 正治喜多
Original assignee: Sunstar Inc
Current assignee: Sunstar Inc
Priority date: 1994-06-28
Filing date: 1994-06-28
Publication date: 2005-04-06
Anticipated expiration: 2020-04-06
Also published as: JPH0817415A

Description

【０００１】
【産業上の利用分野】
本発明は、携帯用の電動ブラシや電動歯間ブラシ或いは懐中電灯などに好適な電池ホルダに関する。
【０００２】
【従来の技術】
従来、電動歯ブラシや電動歯間清掃ブラシなどの口腔内衛生装置として、電池により回転駆動される電動モータの回転力を利用して、歯ブラシを前後移動させたり、振動させたりするタイプの携帯用の口腔内衛生装置が各種提案され実用化されている。
前記口腔内衛生装置としては、内部に電池を収容可能なホルダ部材であって、一端が開口され、他端部内に電池で駆動される電動モータが収容されたホルダ部材と、ホルダ部材の一端開口部を閉鎖する有底円筒状のキャップ部材と、キャップ部材内に固定されたスプリング端子と、電動モータの後端部の軸受部を囲繞するカップ状接触片であって、電動モータの一方の端子に接続されたカップ状接触片と、一端が電動モータの他方の端子に接続され、他端がホルダ部材の一端開口部までホルダ部材の内壁面に沿って延設されたホルダ側接触片と、一端がスプリング端子に接続され、キャップ部材をホルダ部材に取付けた状態で、ホルダ側接触片に電気的に接続されるキャップ側接触片とを備え、電池の両電極をカップ状接触片とスプリング端子とに夫々圧接させて電動モータへ給電するタイプのものが広く採用されている。
【０００３】
ところで、前記キャップ部材に対してスプリング端子を固定する場合、キャップ部材の奥端面に複数の爪部等を形成して、爪部を介してスプリング端子の基端部をキャップ部材の奥端面に固定することも考えられるが、有底円筒状のキャップに対するスプリング端子の固定が煩雑であること、ホルダ側接触片を直接的にスプリング端子に接続することが困難なことなどから、通常は、導電性を有する円板状の固定部材を設け、この固定部材に例えば３つの爪部を切り起こして形成し、これら３つの爪部でスプリング端子の基端部を保持させて固定し、固定部材に固定されたスプリング端子を固定部材とともにキャップ部材内に組込むとともに、ホルダ側接触片の一端部を固定部材の端面の外周部に当接させて、スプリング端子とホルダ側接触片とを電気的に接続する構成が採られている。
【０００４】
【発明が解決しようとする課題】
ところが、前記のように、スプリング端子をキャップ部材に固定するための固定部材を別途設けると、部品点数が増えるとともに、スプリング端子を固定部材に固定するための作業が必要となり、口腔内衛生装置の製作コストが高くなること、固定部材をキャップ部材に固定するため、キャップ部材の奥端面に爪部等を形成する必要があり、キャップ部材を成形するための金型構造が複雑になること、などの問題が発生する。
本考案の目的は、出力手段に対する給電用の配線手段の部品点数を低減するとともに組付性を大幅に向上し且つキャップ部材を成形するための金型構造を簡単化し得る電池ホルダを提供することである。
【０００５】
【課題を解決するための手段】
請求項１に係る電池ホルダは、内部に電池を収容可能なホルダ部材であって、一端が開口され、他端部内に電池で駆動される出力手段が設けられたホルダ部材と、前記ホルダ部材の一端開口部を閉鎖する有底円筒状のキャップ部材であって、奥端面の中央部に突出部が形成されたキャップ部材と、前記キャップ部材に取付けられたキャップ側接触片であって、突出部に外嵌合可能な嵌合孔を有する円板状の着座部と、着座部の略中央部に突出状に形成され電池の一方の電極に当接可能な接触部とを有するキャップ側接触片と、前記ホルダ部材の内壁面に沿って軸方向向きに設けられ、一端がホルダ部材の一端部付近に配置され、他端が出力手段の一方の端子に電気的に接続され、ホルダ部材にキャップ部材を取付けた状態で、一端が着座部に当接するホルダ側接触片と、一端が出力手段の他方の端子に直接固定されて電気的に接続され、他端が電池の他方の電極に当接可能に配置され、ホルダ部材にキャップ部材を取付けた状態で、電池の他方の電極に圧接されるとともに、電池の一方の電極をキャップ側接触片の接触部に圧接させるスプリング端子とを備えたものである。
【０００６】
ここで、請求項２に係る電池ホルダのように、前記突出部をキャップ部材の奥端面の中央部に形成し、前記着座部の中央部に嵌合孔を形成して着座部を環状に形成し、前記嵌合孔を横断するように接触部を形成して、キャップ側接触片をキャップ部材に組付けた状態で、突出部の先端の前側に接触部が延設されるように構成してもよいし、請求項３に係る電池ホルダのように、前記着座部の嵌合孔に臨む部分に、中心側へ向けて突出して突出部に係合する係合突部を形成してもよいし、請求項４に係る電池ホルダのように、前記突出部の先端の前側を跨いで接触部を設け、接触部の両側へ露出した突出部の一部を溶かして形成した偏平部を介して、キャップ側接触片をキャップ部材に固定してもよい。
【０００７】
【作用】
本発明に係る電池ホルダにおいては、ホルダ部材の他端部内に設けられた出力手段の一方の端子が、ホルダ側接触片を介して電池の一方の電極に圧接されたキャップ側接触片に接続され、出力手段の他方の端子がスプリング端子を介して電池の他方の電極に接続されることで、出力手段が通電されることになる。
この電池ホルダにおいて、キャップ側接触片は、嵌合孔にキャップ部材の奥端面に形成された突出部を挿通させることで、キャップ部材に対して位置決めされ、接着剤などを介して着座部をキャップ側接触片の奥端面に固定したり、着座部の嵌合孔に臨む部分に中心側へ向けて突出した係合突部を形成し、この係合突部を突出部に係合させたり、突出部を溶かして偏平部を形成し、この偏平部を着座部に係合させたりすることで、キャップ部材に対して位置決め固定される。
【０００８】
また、ホルダ側接触片は、出力部材の一方の端子に接続されており、また、スプリング端子は出力手段の他方の端子に直接固定されており、ホルダ側接触片及びスプリング端子は、予め出力手段に固定した状態で、出力手段とともにホルダ部材に組付けられる。
このように、キャップ側接触片とホルダ側接触片とスプリング端子の３つの部材で出力手段への給電回路を構成することが可能となり、キャップ部材内にスプリング端子を固定する場合と比較して、部品点数を低減出来るとともに、これら３つの部材の組付性を向上することが可能となる。
【０００９】
【実施例】
以下、本考案の実施例について図面を参照しながら説明する。
本実施例は、携帯用電動歯間ブラシに本考案を適用した場合のものである。
図１に示すように、携帯用電動歯間清掃ブラシ１は、液密電池ホルダ（これが電池ホルダに相当する）２に振動発生手段（これが出力手段に相当する）３及び電池４を内装した本体装置５と、本体装置５の左端部に着脱可能に取付けられる口腔内衛生具としての歯間清掃ブラシ６とを備えている。但し、前記歯間清掃ブラシ６に代えて後述する替え歯ブラシ７０や歯肉の乳頭マッサージ具７１や歯肉マッサージ具７２やフロスユニット７３などの口腔内衛生具を本体装置５に取付けてもよい。
【００１０】
前記液密電池ホルダ２は、振動発生手段３及び電池４を収容する略円筒状のホルダ部材１０と、ホルダ部材１０に着脱可能に取付けられるキャップ部材２０と、振動発生手段３への給電回路を構成する配線手段３０とを備えている。尚、前記ホルダ部材１０及びキャップ部材２０は絶縁性を有する合成樹脂材料で構成されている。
【００１１】
前記ホルダ部材１０は、図１、図２に示すように、左端近傍部が閉鎖された有底円筒状の部材で、ホルダ部材１０の左端部には歯間清掃ブラシ６を着脱可能に保持するための保持部４０が形成され、ホルダ部材１０の右端部には小径部１１が形成され、小径部１１の右部には雄螺子部１２が形成され、小径部１１の左端近傍部には環状のリング装着溝１３が形成され、リング装着溝１３にはシールリング１４が装着されている。
【００１２】
前記キャップ部材２０は、図１〜図３に示すように、右端が閉鎖された略円筒状の部材で、キャップ部材２０の左部の内壁面には雄螺子部１２に螺合する雌螺子部２１が形成され、キャップ部材２０の左端部には内径が雌螺子部２１よりも大径のシール部２２が形成され、シール部２２の内周面にはシールリング１４の外周面が液密状に圧接されるシール面２３が形成され、キャップ部材２０の右部にはキャップ部材２０を回転操作するための把持部２４が形成され、キャップ部材２０の右半部の内周面は雌螺子部２１よりも小径に構成されて雌螺子部２１の境界部分に段部２５が形成され、キャップ部材２０の奥端面の略中央部には左方へ突出状に延びる略円柱状の突出部２６が形成されている。尚、前記シールリング１４は、キャップ部材２０とホルダ部材１０間の摩擦抵抗を軽減するために、その硬度を軟らか目（硬度５０前後）に設定したり、その表面にテフロンなどの低摩擦剤をコーティングしてもよい。
【００１３】
前記振動発生手段３は、図１に示すように、ホルダ部材１０の左端近傍部に内装された電動モータ７と、電動モータ７の左方へ突出状に延びる回転軸７ａに固定された偏心錘８とを備え、偏心錘８の遠心力をホルダ部材１０に作用させて歯間清掃ブラシ６を振動させるものである。
【００１４】
前記配線手段３０について説明すると、図１〜図３に示すように、電動モータ７の右端部には電池４の正極に当接するスプリング端子３１が設けられ、スプリング端子３１の左端部は電動モータ７の一方の端子に接続され、ホルダ部材１０の内壁部には左右方向に延びる溝部３２が形成され、溝部３２内には電動モータ７の他方の端子に接続された帯板状のホルダ側接触片３３が装着され、ホルダ側接触片３３の右端部はホルダ部材１０の左端部に係止されている。
【００１５】
前記キャップ部材２０内には、中央部に嵌合孔３４ａが形成された環状の着座部３４ｂと、嵌合孔３４ａを横断して設けられるとともに左方へ突出状に形成された帯板状の接触部３４ｃとからなるキャップ側接触片３４が設けられ、キャップ側接触片３４は着座部３４ｂの右端面の外周縁部を段部２５の左端面に当接させて左右方向に位置決めされるとともに、突出部２６の左端部が嵌合孔３４ａに挿入されて半径方向に位置決めされ、接触部３４ｃの両側へ露出した突出部２６の部分を溶かして偏平部２６ａを形成し、この偏平部２６ａを着座部３４ｂに係合させることでキャップ部材２０に固定され、着座部３４ｂの外周縁部はホルダ側接触片３３の右端部に当接可能に配置され、接触部３４ｃは電池４の負極に当接可能に配置されている。
【００１６】
前記ホルダ側接触片３３とキャップ側接触片３４とで給電回路のスイッチの接触子が構成され、図４に示すように、ホルダ側接触片３３の右端面とシールリング１４の中心間の距離Ｌ１は、キャップ側接触片３４の着座部３４ｂの左端面とシール部２２の左端部間の距離Ｌ２よりも小さく設定され、キャップ部材２０をホルダ部材１０に螺じ込んで、シールリング１４がシール部２２に内嵌されてその外周面がシール面２３に圧接された状態で、ホルダ側接触片３３とキャップ側接触片３４とは隙間Ｌ３を隔てて配置され、図５に示すように、キャップ部材２０をホルダ部材１０に更に螺じ込むことで、キャップ側接触片３４がホルダ側接触片３３に圧接されて給電回路が閉じられ、電動モータ７が回転駆動される。
【００１７】
ここで、前記キャップ部材２０を回転操作してキャップ側接触片３４とホルダ側接触片３３とを接触・離間させるのに必要な操作角度、つまり、給電回路をＯＮ／ＯＦＦ切り換えるのに必要な操作角度は、モニターテストの結果、９０°〜１５０°であることが判り、隙間Ｌ３は両螺子部のピッチに１５０°／３６０°を乗じた数値よりも大きく、好ましくは操作角度を３６０〜４５０°以上に設定した場合の数値以上に設定されている。即ち、Ｌ３＋Ｌ１がＬ２を越えない範囲で、Ｌ３をできるだけ大きく設定することによって、シール効果の範囲を広げることが出来る。
【００１８】
前記保持部４０は、図６、図７に示すように、ホルダ部材１０の左端部を閉鎖するようにホルダ部材１０に一体的に形成された有底円筒状の部材で、左端側程縮小するコーン状に形成され、保持部４０の左部には１対の第１スリット４１と１対の第２スリット４２とが円周４等分位置に交互に形成され、第１スリット４１は保持部４０の左端からその奥端面付近まで形成され、第２スリット４２は保持部の左端から保持部４０の途中部まで形成され、保持部４０の左部には両スリット４１、４２により４つの保持爪４３が形成されている。但し、前記両スリット４１、４２は前記以外の個数形成してもよい。
【００１９】
前記歯間清掃ブラシ６は、図１に示すように、保持部４０に着脱可能に取付けられる合成樹脂材料や合成ゴム材料や金属材料などからなる軸部６ａと、軸部６ａから左方へ延びる歯間清掃用の植毛部６ｂとを備え、植毛部６ｂは鋼線に合成樹脂フィラメントを植設したもので、この鋼線の右端部を軸部６ａの左端部に埋設して軸部６ａに固定されている。
【００２０】
前記保持部４０においては、その肉厚さが奥端面側に行くにしたがって厚肉に構成してあり、しかも、第２スリット４２を保持部４０の途中部までしか形成していないので、４つの保持爪４３の基端部における強度を十分に確保することが可能となる。また、第１スリット４１及び第２スリット４２を形成してあるので、保持爪４３の先端は、素材の弾性力により径方向へ比較的大きく拡縮することが可能になる。このため、軸部６ａの成形精度に比較的大きなバラツキがあっても、軸部６ａを強固に保持することが可能となり、歯間清掃ブラシ６の脱落を効果的に防止出来る。更に、第１スリット４１を保持部４０の奥端面付近まで形成してあるので、保持部４０の奥端部に詰まった歯磨き粉等の清掃が容易になる。
【００２１】
ここで、図７に示すように、前記保持爪４３の左端近傍部の内面に部分環状の係合突部４４を形成し、軸部６ａの途中部に係合突部４４に係合する環状溝６ｃを形成してもよい。この場合には、係合突部４４と環状溝６ｃとの係合により、保持部４０に固定した歯間清掃ブラシ６の脱落が効果的に防止され、硬質の合成樹脂材料や金属材料で軸部６ａを形成した場合でも、歯間清掃ブラシ６の脱落が防止される。尚、軸部６ａをエストラマーやゴム材料で構成する場合には、環状溝６ｃを省略し、軸部６ａの外周部に係合突部４４を食い込ませて、歯間清掃ブラシ６の脱落を効果的に防止することが可能となる。
【００２２】
また、図７に示すように、軸部６ａの基端部に第１スリット４１又は第２スリット４２に係合可能な突条６ｄを突出状に設けてもよい。この場合には、歯間清掃ブラシ６を保持部４０に対して回転規制した状態で取付けることが可能となり、歯間清掃ブラシ６の操作性が向上する。尚、前記突条６ｄに代えて、突起を設けてもよい。
【００２３】
次に、前記電動歯間清掃ブラシ１の作用について説明する。
ホルダ部材１０に対してキャップ部材２０を螺合させると、先ず、図４に示すように、シールリング１４がシール面２３に圧接されてホルダ部材１０内が液密状にシールされ、更にキャップ部材２０を所定角度螺じ込むと、図５に示すように、ホルダ部材１０内が液密状にシールされた状態で、キャップ側接触片３４がホルダ側接触片３３に圧接されて給電回路が閉じられ、電動モータ７が回転駆動されて歯間清掃ブラシ６に振動が付与される。
【００２４】
一方、キャップ部材２０を逆方向に９０°〜１５０°回転操作すると、図２に示すように、キャップ側接触片３４がホルダ側接触片３３から離間し、電動モータ７が停止する。この時、シールリング１４はシール面２３に圧接した状態に保持されており、ホルダ部材１０内は液密状態に保持される。しかも、この状態において、キャップ部材２０は、シールリング１４がシール面２３に圧接されることによりその回転が規制され、不用意に回転して電動モータ７が駆動されたり、キャップ部材２０が脱落したりすることが防止される。そして、次回からは、図５に示す状態と図２に示す状態とにキャップ部材２０を回転操作して切り換えて、給電回路をＯＮ／ＯＦＦ切換えることになる。
【００２５】
このように、電動モータ７への通電をＯＮ／ＯＦＦ切換えるキャップ部材２０の操作範囲内において、シールリング１４によりキャップ部材２０とホルダ部材１０間がシールされているので、ホルダ部材１０内を常時液密状態に保持することが可能となる。しかも、電動歯間清掃ブラシ１の使用時に、キャップ部材２０が緩んでキャップ部材２０とホルダ部材１０間が確実にシールされていない場合でも、電動モータ７を駆動するためには、図５に示すように、キャップ部材２０を回転操作する必要があり、これによりキャップ部材２０とホルダ部材１０間がシールされるので、使用中におけるホルダ部材１０内への水等の侵入を確実に防止することが可能となる。また、キャップ部材２０が緩んだ状態において、水洗い等がなされたとしても、その緩み方がシールリング１４のシール効果が得られる範囲内の緩みならば確実に水等の侵入を防止することが可能となる。
【００２６】
前記ホルダ側接触片３３に対してキャップ側接触片３４を接触・離間させることで、電動モータ７への通電をＯＮ／ＯＦＦ切換えすることが可能なので、給電回路のスイッチ構造を簡略化出来るとともにそのシール構造も簡略化出来、本体装置５の構成を大幅に簡単化することが可能となる。
【００２７】
前記スプリング端子３１とキャップ側接触片３４とホルダ側接触片３３の３つの部材で給電回路を構成出来るので、スプリング端子をキャップ部材内に設ける場合と比較して、部品点数を低減でき、キャップ部材２０を成形する金型構造も大幅に簡単化できる。また、スプリング端子３１及びホルダ側接触片３３は、ハンダ付けなどにより電動モータ７の端子に夫々容易に固定出来、またキャップ側接触片３４も、接触部３４ｃの両側へ露出する突出部２６の部分を溶かして偏平部２６ａを形成することで容易に組付けることが可能なので、給電回路を構成する３つの部材の組付性を大幅に向上出来る。
【００２８】
また、シールリング１４により雌螺子部２１と雄螺子部１２の噛合部分への歯磨き水等の侵入を確実に防止することが可能となり、両螺子部１２、２１の噛合部分で歯磨き水が硬化して、キャップ部材２０の回転操作が困難になるという不具合を防止出来る。
【００２９】
尚、本実施例では、キャップ部材２０の回転操作により給電回路をＯＮ／ＯＦＦ切換えるように構成したが、給電回路に別途スイッチを設け、このスイッチの操作により給電回路をＯＮ／ＯＦＦ切換えるように構成してもよい。
【００３０】
また、図８に示すように、前記雄螺子部１２と雌螺子部２１間に遊びＧを設け、キャップ部材２０を電動モータ７への通電直前位置まで螺じ込んだ状態にし、キャップ部材２０を押し操作することで、雄螺子部１２と雌螺子部２１間の遊びＧを介してキャップ側接触片３４をホルダ側接触片３３に接触させて給電回路を閉じ、キャップ部材２０の押し操作を中断することで、スプリング端子３１のバネ力でキャップ部材２０を元の位置に復帰させて、キャップ側接触片３４をホルダ側接触片３３から離間させ、給電回路を開いた状態にしてもよい。
【００３１】
更に、図９に示すように、キャップ部材２０の右半部を省略したキャップ部材２０Ａを設け、このキャップ部材２０Ａの奥端面に突出部２６Ａを形成し、着座部３４ｂをキャップ部材２０Ａの奥端面に接触させた状態でキャップ側接触片３４を固定してもよい。
【００３２】
次に、前記液密電池ホルダ２の構成を部分的に変更した別実施例について説明する。尚、前記実施例と同一部材には同一符号を付してその詳細な説明を省略する。
この液密電池ホルダ２Ｂは、図１０に示すように、ホルダ部材１０Ｂに雌螺子部５０を形成し、キャップ部材２０Ｂに雄螺子部５５を形成したものであり、次のように構成されている。
前記ホルダ部材１０Ｂの右端近傍部には雌螺子部５０が設けられ、ホルダ部材１０Ｂの右端部には内径が雌螺子部５０よりも小径のシール部５１が形成され、シール部５１の内周面にはシール面５２が形成されている。
【００３３】
前記キャップ部材２０Ｂの左部には雌螺子部５０に螺合する雄螺子部５５が形成され、キャップ部材２０Ｂの右部には把持部５６が形成され、雄螺子部５５と把持部５６間には雄螺子部５５よりも大径の取付部５７が形成され、取付部５７にはシール面５２に液密状に内嵌可能なシールリング５８が装着され、キャップ部材の奥端面には略円柱状の突出部５９が左方へ向けて突出状に形成されている。
【００３４】
前記ホルダ側接触片３３は、雌螺子部５０付近まで右方へ延設されて右端部が内側へ屈曲され、キャップ側接触片３４は雄螺子部５５の左側に固定され、キャップ部材２０Ｂをホルダ部材１０Ｂに螺じ込んで、シールリング５８がシール部５１に内嵌されてその外周面がシール面５２に圧接された状態で、ホルダ部材２０Ｂ内が液密状に閉鎖され、キャップ部材２０Ａを更に螺じ込むことで、キャップ側接触片３４がホルダ側接触片３３に圧接されて給電回路が閉じられるように構成されている。
【００３５】
次に、前記キャップ側接触片３４の構成を部分的に変更した変形例について説明する。
図１１に示すように、着座部３４ｂに嵌合孔３４ａの内側へ向けて突出した複数の係合突部６０を形成したキャップ側接触片３４Ａを用い、着座部３４ｂを突出部２６、２６Ａ、５９に装着するときに係合突部６０を突出部２６、２６Ａ、５９の外周面に係合させて、キャップ側接触片３４Ａをキャップ部材２０、２０Ａ、２０Ｂに固定してもよい。
また、図１２に示すように、接触部３４ｃを片持ち状に形成したキャップ側接触片３４Ｂを用いてもよい。
【００３６】
更に、図１３に示すように、有底円筒状の接触部６１を設け、接触部６１の基端部付近に内側へ突出した環状の係止突部６２を形成したキャップ側接触片３４Ｃを用い、突出部２６、２６Ａ、５９の先端近傍部に係止突部６２に係合する環状溝（図示略）を形成し、この環状溝に係止突部６２を係合させて、キャップ側接触片３４Ｃをキャップ部材２０、２０Ａ、２０Ｂに固定してもよい。
【００３７】
尚、前記突出部２６、２６Ａ、５９を溶かさないで、ホットメルトなどの接着材でキャップ側接触片３４、３４Ａ〜３４Ｃをキャップ部材２０、２０Ａ、２０Ｂに固定してもよい。
【００３８】
次に、前記保持部４０に着脱可能に取付けることが可能な、歯間清掃ブラシ６以外の口腔内衛生具について説明する。
前記口腔内衛生具として、図１４に示すように、軸部６ａの先端部に植毛台７０ａを形成し、この植毛台７０ａに複数の毛束７０ｂを植設した歯ブラシ７０を用いてもよい。
また、前記口腔内衛生具として、図１５に示すように、軸部６ａの先端部に環状の頭部７１ａを形成し、この頭部７１ａに先端が尖ったゴム部材７１ｂを取付けた歯肉の乳頭マッサジ具７１を用いてもよい。
【００３９】
更に、前記口腔内衛生具として、図１６に示すように、軸部６ａの先端部に袋状のゴム部材７２ａを装着し、このゴム部材７２ａの上面に複数の突起７２ｂを形成した歯肉マッサージ具７２を用いてもよい。
更にまた、前記口腔内衛生具として、図１７に示すように、軸部６ａの先端部に１対のアーム部７３ａを形成し、両アーム部７３ａの先端部間にデンタルフロス７３ｂが張設した、フロスユニット７３を用いてもよい。
【００４０】
次に、前記振動発生手段３による歯間清掃ブラシ６の振動形態について説明する。
この振動発生手段３は、偏心錘８を回転させることで振動を発生させるもので、図１８に示すように、軸部６ａの軸心と同軸状に植毛部６ｂの鋼線を配置させた場合には、図１９に示すように、植毛部６ｂの先端は直径（振幅）Ｒ１の円周上に沿って、右回り或いは左回りに回転することになる。このように、植毛部６ｂを軸部６ａと同軸状に配置した場合には、植毛部６ｂを歯間に挿入して加振したときには、主に歯間周辺部分が清掃されることになる。また、加振状態で植毛部６ｂを軸芯方向へ前後移動させると、清掃効果を一層高めることが可能となる。
【００４１】
また、図２０に示すように、植毛部６ｂの鋼線を基端部から約９０°屈曲させた場合には、図２１に示すように、植毛部６ｂの先端は直径（振幅）Ｒ２の円周上に沿って、右回り或いは左回りに回転することになる。このように、植毛部６ｂを屈曲させた場合には、植毛部６ｂが歯間を進退して、主に歯間が清掃されることになる。
【００４２】
更に、前記振動発生手段３においては、ホルダ部材１０を介して歯間清掃ブラシ６に振動を作用させるので、ホルダ部材１０の保持位置により、植毛部６ｂの先端部の振幅Ｒ１、Ｒ２及び回転数（振動数）を調整することが可能となる。
つまり、図２２に示すよう、ホルダ部材１０の保持位置を先端側へ移動させる程、振幅を拘束する作用がはたらき、振幅及び回転数は小さくなるので、強くブラッシングしたい場合には、ホルダ部材１０の後端部側を保持し、弱くブラッシングしたい場合には、ホルダ部材１０の先端部側を保持することで、ブラッシング力を調整することが可能となることが判る。
【００４３】
尚、本実施例では、携帯用電動歯間清掃ブラシ１の液密電池ホルダ２に本発明を適用したが、液密でない電池ホルダに対しても本発明を適用出来るし、電動歯間清掃ブラシ１以外の懐中電灯などの電池ホルダに対しても本発明を適用出来る。
【００４４】
【発明の効果】
請求項１に係る電池ホルダによれば、キャップ側接触片とホルダ側接触片とスプリング端子の３つの部材で出力手段への給電回路を構成することが可能となり、キャップ部材内にスプリング端子を固定する場合と比較して、部品点数を低減出来るとともに、これら３つの部材の組付性を向上出来ること、キャップ部材の奥端面には突出部を形成するだけでよいので、キャップ部材を成形するための金型構造を簡単化出来ること、などの効果が得られる。
請求項２に係る電池ホルダによれば、１回のプレス成形により接触部と嵌合孔を形成することが可能となること、接触部を突出部の先端部に当接させることで、接触部の変形を効果的に防止出来ること、などの効果が得られる。
【００４５】
請求項３に係る電池ホルダによれば、着座部の嵌合孔に臨む部分に、中心側へ向けて突出して突出部に係合する係合突部を形成してあるので、嵌合孔に突出部を圧入させて係合突部を突出部の周壁に係合させることで、キャップ部材に対してキャップ側接触片を容易に固定することが可能となる。
請求項４に係る電池ホルダによれば、突出部の先端の前側を跨いで接触部を設け、接触部の両側へ露出した突出部の一部を溶かして形成した偏平部を介して、キャップ側接触片をキャップ部材に固定するので、キャップ部材に対してキャップ側接触片を容易に且つ確実に固定することが可能となる。
【図面の簡単な説明】
【図１】電動歯間清掃ブラシの縦断面図
【図２】電動歯間清掃ブラシの要部縦断面図
【図３】図２のIII-III 線断面図
【図４】シール開始位置における図２相当図
【図５】給電回路をＯＮ状態に操作したときにおける図２相当図
【図６】保持部付近の斜視図
【図７】保持部及び軸部の変形例を示す保持部付近の縦断面図
【図８】雄螺子部及び雌螺子部の変形例を示す要部縦断面図
【図９】キャップ部材の変形例を示す図２相当図
【図１０】別実施例に係る液密電池ホルダの図２相当図
【図１１】キャップ側接触片の第１変形例を示す斜視図
【図１２】キャップ側接触片の第２変形例を示す斜視図
【図１３】キャップ側接触片の第３変形例を示す斜視図
【図１４】口腔内衛生具としての歯ブラシの斜視図
【図１５】口腔内衛生具としての乳頭マッサージ具の斜視図
【図１６】口腔内衛生具としての歯肉マッサージ具の斜視図
【図１７】口腔内衛生具としてのフロスユニットの斜視図
【図１８】歯間清掃ブラシの振動形態の説明図
【図１９】図１８のＡ矢視図
【図２０】曲げた状態での歯間清掃ブラシの振動形態の説明図
【図２１】図２０のＢ矢視図
【図２２】保持位置と振動数の関係などを示す説明図
【符号の説明】
１携帯用電動歯間清掃ブラシ２９Ａキャップ部材
２液密電池ホルダ２６Ａ突出部
３振動発生手段２Ｂ液密電池ホルダ
４電池１０Ｂホルダ部材
５本体装置２０Ｂキャップ部材
６歯間清掃ブラシ５０雌螺子部
６ａ軸部５１シール部
６ｂ植毛部５２シール面
６ｃ環状溝５５雄螺子部
６ｄ突条５６把持部
７電動モータ５７取付部
７ａ回転軸５８シールリング
８偏心錘５９突出部
１０ホルダ部材３４Ａキャップ側接触片
１１小径部６０係合突部
１２雄螺子部３４Ｂキャップ側接触片
１３リング装着溝３４Ｃキャップ側接触片
１４シールリング６１接触部
２０キャップ部材６２係止突部
２１雌螺子部７０歯ブラシ
２２シール部７０ａ植毛台
２３シール面７０ｂ毛束
２４把持部７１乳頭マッサジ具
２５段部７１ａ頭部
２６突出部７１ｂゴム部材
２６ａ偏平部７２歯肉マッサージ具
３０配線手段７２ａゴム部材
３１スプリング端子７２ｂ突起
３２溝部７３フロスユニット
３３ホルダ側接触片７３ａアーム部
３４ａ嵌合孔７３ｂデンタルフロス
３４ｂ着座部
３４ｃ接触部
３４キャップ側接触片
４０保持部
４１第１スリット
４２第２スリット
４３保持爪
４４係合突部[0001]
[Industrial application fields]
The present invention relates to a battery holder suitable for a portable electric brush, an electric interdental brush, a flashlight, or the like.
[0002]
[Prior art]
Conventionally, as an intraoral hygiene device such as an electric toothbrush or an electric interdental cleaning brush, a portable type of portable device that uses the rotational force of an electric motor driven by a battery to move the toothbrush back and forth or vibrate. Various oral hygiene devices have been proposed and put into practical use.
The oral hygiene device includes a holder member that can accommodate a battery therein, one end of which is opened, and a holder member that houses an electric motor driven by the battery in the other end, and one end opening of the holder member A cup-shaped contact piece that surrounds the bearing portion at the rear end of the electric motor, and a bottomed cylindrical cap member that closes the portion, a spring terminal fixed in the cap member, and one terminal of the electric motor A cup-shaped contact piece connected to the holder, a holder-side contact piece whose one end is connected to the other terminal of the electric motor, and the other end extends along the inner wall surface of the holder member to one end opening of the holder member; A cap-side contact piece electrically connected to the holder-side contact piece in a state where one end is connected to the spring terminal and the cap member is attached to the holder member, and both the battery electrodes are connected to the cup-like contact piece and the spring end By each pressure contact of a type that power supply to the electric motor is employed widely and.
[0003]
By the way, when fixing the spring terminal to the cap member, a plurality of claws are formed on the back end surface of the cap member, and the base end portion of the spring terminal is fixed to the back end surface of the cap member via the claw portion. Although it is possible to fix the spring terminal to the bottomed cylindrical cap, it is difficult to connect the holder side contact piece directly to the spring terminal. A disk-shaped fixing member having a pin is provided, and for example, three claw portions are cut and raised on the fixing member, and the base end portion of the spring terminal is held and fixed by these three claw portions, and fixed to the fixing member. The spring terminal is assembled in the cap member together with the fixing member, and the one end of the holder side contact piece is brought into contact with the outer peripheral portion of the end surface of the fixing member so that the spring terminal contacts the holder side. Construction of electrically connecting is adopted and.
[0004]
[Problems to be solved by the invention]
However, as described above, when a fixing member for fixing the spring terminal to the cap member is separately provided, the number of parts increases, and an operation for fixing the spring terminal to the fixing member is required. Increased production cost, fixing the fixing member to the cap member, it is necessary to form a claw or the like on the back end surface of the cap member, and the mold structure for molding the cap member is complicated, etc. Problems occur.
An object of the present invention is to provide a battery holder capable of reducing the number of parts of power supply wiring means for output means, greatly improving the assembling property, and simplifying a mold structure for molding a cap member. It is.
[0005]
[Means for Solving the Problems]
A battery holder according to claim 1 is a holder member capable of accommodating a battery therein, wherein one end is opened and a holder member provided with output means driven by a battery in the other end portion; A bottomed cylindrical cap member that closes an opening at one end, a cap member having a protrusion formed at the center of the back end surface, and a cap-side contact piece attached to the cap member, the protrusion A cap-side contact piece having a disc-shaped seating portion having a fitting hole that can be fitted to the outside, and a contact portion that is formed in a protruding shape at a substantially central portion of the seating portion and can contact one electrode of the battery And an axial direction along the inner wall surface of the holder member, one end is disposed near one end of the holder member, the other end is electrically connected to one terminal of the output means, and the holder member is capped. With the member attached, one end is on the seat The holder side contact piece to be in contact with one end is directly fixed and electrically connected to the other terminal of the output means, the other end is disposed so as to be able to contact the other electrode of the battery, and the cap member is attached to the holder member And a spring terminal that is pressed against the other electrode of the battery and presses the one electrode of the battery against the contact portion of the cap-side contact piece.
[0006]
Here, like the battery holder according to claim 2, the protruding portion is formed in the central portion of the back end surface of the cap member, and the fitting portion is formed in the central portion of the seating portion to form the seating portion in an annular shape. The contact portion is formed so as to cross the fitting hole, and the contact portion is extended to the front side of the tip of the protruding portion in a state where the cap side contact piece is assembled to the cap member. Alternatively, as in the battery holder according to claim 3, an engaging protrusion that protrudes toward the center side and engages with the protruding portion may be formed in a portion facing the fitting hole of the seating portion. Alternatively, as in the battery holder according to claim 4, a contact portion is provided across the front side of the tip of the protrusion, and a flat portion formed by melting a part of the protrusion exposed on both sides of the contact portion is provided. The cap-side contact piece may be fixed to the cap member.
[0007]
[Action]
In the battery holder according to the present invention, one terminal of the output means provided in the other end portion of the holder member is connected to the cap side contact piece pressed against one electrode of the battery via the holder side contact piece. When the other terminal of the output means is connected to the other electrode of the battery via the spring terminal, the output means is energized.
In this battery holder, the cap-side contact piece is positioned with respect to the cap member by inserting the protrusion formed on the back end surface of the cap member into the fitting hole, and caps the seating portion via an adhesive or the like. Fixing to the back end face of the side contact piece, forming an engaging protrusion protruding toward the center side at the part facing the fitting hole of the seating part, and engaging the engaging protrusion with the protruding part, The protruding portion is melted to form a flat portion, and the flat portion is engaged with the seating portion, thereby positioning and fixing to the cap member.
[0008]
The holder-side contact piece is connected to one terminal of the output member, and the spring terminal is directly fixed to the other terminal of the output means. The holder-side contact piece and the spring terminal are preliminarily provided in the output means. It is assembled to the holder member together with the output means in a fixed state.
Thus, it becomes possible to constitute a power supply circuit to the output means with three members of the cap-side contact piece, the holder-side contact piece, and the spring terminal, compared with the case where the spring terminal is fixed in the cap member, The number of parts can be reduced, and the assemblability of these three members can be improved.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
In this embodiment, the present invention is applied to a portable electric interdental brush.
As shown in FIG. 1, a portable electric interdental cleaning brush 1 includes a liquid-tight battery holder (which corresponds to a battery holder) 2, a vibration generating means (which corresponds to an output means) 3 and a battery 4. The apparatus 5 and the interdental cleaning brush 6 as an intraoral hygiene tool attached to the left end part of the main body apparatus 5 so that attachment or detachment is possible are provided. However, instead of the interdental cleaning brush 6, oral hygiene tools such as a replacement toothbrush 70, a gingival nipple massage tool 71, a gingival massage tool 72, and a floss unit 73, which will be described later, may be attached to the main body device 5.
[0010]
The liquid-tight battery holder 2 includes a substantially cylindrical holder member 10 that houses the vibration generating means 3 and the battery 4, a cap member 20 that is detachably attached to the holder member 10, and a power supply circuit to the vibration generating means 3. Wiring means 30 is provided. The holder member 10 and the cap member 20 are made of an insulating synthetic resin material.
[0011]
As shown in FIGS. 1 and 2, the holder member 10 is a bottomed cylindrical member whose left end is closed, and an interdental cleaning brush 6 is detachably held at the left end of the holder member 10. A holding portion 40 is formed, a small diameter portion 11 is formed at the right end portion of the holder member 10, a male screw portion 12 is formed at the right portion of the small diameter portion 11, and an annular portion is formed near the left end of the small diameter portion 11. A ring mounting groove 13 is formed, and a seal ring 14 is mounted in the ring mounting groove 13.
[0012]
As shown in FIGS. 1 to 3, the cap member 20 is a substantially cylindrical member whose right end is closed, and a female screw portion that engages with the male screw portion 12 on the inner wall surface of the left portion of the cap member 20. 21 is formed, a seal portion 22 having an inner diameter larger than that of the female screw portion 21 is formed at the left end portion of the cap member 20, and the outer peripheral surface of the seal ring 14 is liquid-tight on the inner peripheral surface of the seal portion 22. A seal surface 23 is formed in pressure contact with the cap member 20, a grip portion 24 for rotating the cap member 20 is formed on the right portion of the cap member 20, and an inner peripheral surface of the right half portion of the cap member 20 is a female screw portion. A step portion 25 is formed at the boundary portion of the female screw portion 21 with a smaller diameter than 21, and a substantially columnar protrusion portion 26 that protrudes leftward is formed at a substantially central portion of the back end surface of the cap member 20. Is formed. Note that the seal ring 14 has a soft hardness (around 50 hardness) or a low friction agent such as Teflon on the surface in order to reduce the frictional resistance between the cap member 20 and the holder member 10. It may be coated.
[0013]
As shown in FIG. 1, the vibration generating means 3 includes an electric motor 7 built in the vicinity of the left end of the holder member 10 and an eccentric weight fixed to a rotating shaft 7a extending in a protruding manner to the left of the electric motor 7. 8, and the centrifugal force of the eccentric weight 8 is applied to the holder member 10 to vibrate the interdental cleaning brush 6.
[0014]
The wiring means 30 will be described. As shown in FIGS. 1 to 3, a spring terminal 31 that contacts the positive electrode of the battery 4 is provided at the right end of the electric motor 7, and the left end of the spring terminal 31 is the electric motor 7. A groove portion 32 extending in the left-right direction is formed in the inner wall portion of the holder member 10, and a strip-shaped holder-side contact piece connected to the other terminal of the electric motor 7 in the groove portion 32. 33 is mounted, and the right end portion of the holder side contact piece 33 is locked to the left end portion of the holder member 10.
[0015]
In the cap member 20, an annular seating portion 34b having a fitting hole 34a formed in the central portion, and a strip plate-like shape that is provided across the fitting hole 34a and protrudes leftward. A cap-side contact piece 34 comprising a contact portion 34c is provided, and the cap-side contact piece 34 is positioned in the left-right direction by bringing the outer peripheral edge portion of the right end surface of the seating portion 34b into contact with the left end surface of the step portion 25. The left end portion of the protruding portion 26 is inserted into the fitting hole 34a and positioned in the radial direction, and the portions of the protruding portion 26 exposed on both sides of the contact portion 34c are melted to form the flat portion 26a. It is fixed to the cap member 20 by engaging with the seating portion 34b, the outer peripheral edge portion of the seating portion 34b is disposed so as to be able to contact the right end portion of the holder-side contact piece 33, and the contact portion 34c contacts the negative electrode of the battery 4. It is arranged to be able to touch .
[0016]
The holder-side contact piece 33 and the cap-side contact piece 34 constitute a contact of a switch of the power feeding circuit, and as shown in FIG. 4, a distance L1 between the right end surface of the holder-side contact piece 33 and the center of the seal ring 14 Is set to be smaller than the distance L2 between the left end surface of the seating portion 34b of the cap-side contact piece 34 and the left end portion of the seal portion 22, and the cap member 20 is screwed into the holder member 10 so that the seal ring 14 becomes the seal portion. The holder-side contact piece 33 and the cap-side contact piece 34 are arranged with a gap L3 in a state where the outer peripheral surface of the holder-side contact piece 33 is press-fitted to the seal surface 23, and as shown in FIG. By further screwing 20 into the holder member 10, the cap side contact piece 34 is pressed against the holder side contact piece 33, the power feeding circuit is closed, and the electric motor 7 is driven to rotate.
[0017]
Here, the operation angle required for rotating the cap member 20 to contact / separate the cap-side contact piece 34 and the holder-side contact piece 33, that is, an operation required for switching the power feeding circuit ON / OFF. As a result of the monitor test, the angle is found to be 90 ° to 150 °, and the gap L3 is larger than the value obtained by multiplying the pitch of both screw portions by 150 ° / 360 °, and preferably the operation angle is 360 to 450 °. It is set to be more than the numerical value when set above. That is, by setting L3 as large as possible so that L3 + L1 does not exceed L2, the range of the sealing effect can be expanded.
[0018]
As shown in FIGS. 6 and 7, the holding portion 40 is a bottomed cylindrical member formed integrally with the holder member 10 so as to close the left end portion of the holder member 10, and is reduced toward the left end side. It is formed in a cone shape, and a pair of first slits 41 and a pair of second slits 42 are alternately formed on the left side of the holding part 40 at the circumference equally divided into four parts. The second slit 42 is formed from the left end of the holding part to the middle part of the holding part 40, and four holding claws are formed on the left part of the holding part 40 by both slits 41, 42. 43 is formed. However, the slits 41 and 42 may be formed in a number other than the above.
[0019]
As shown in FIG. 1, the interdental cleaning brush 6 includes a shaft portion 6a made of a synthetic resin material, a synthetic rubber material, a metal material, or the like that is detachably attached to the holding portion 40, and extends leftward from the shaft portion 6a. It is provided with a flocking portion 6b for interdental cleaning, and the flocking portion 6b is obtained by implanting a synthetic resin filament on a steel wire, and the right end portion of this steel wire is embedded in the left end portion of the shaft portion 6a. It is fixed.
[0020]
In the holding part 40, the thickness thereof is increased as it goes to the back end face side, and the second slit 42 is formed only up to the middle part of the holding part 40, so that It is possible to sufficiently ensure the strength at the proximal end portion of the holding claw 43. In addition, since the first slit 41 and the second slit 42 are formed, the tip of the holding claw 43 can be relatively expanded and contracted in the radial direction by the elastic force of the material. For this reason, even if there is a relatively large variation in the molding accuracy of the shaft portion 6a, the shaft portion 6a can be firmly held, and the interdental cleaning brush 6 can be effectively prevented from falling off. Furthermore, since the 1st slit 41 is formed to the back end surface vicinity of the holding | maintenance part 40, cleaning of the toothpaste etc. which were packed in the back | end end part of the holding | maintenance part 40 becomes easy.
[0021]
Here, as shown in FIG. 7, a partial annular engagement protrusion 44 is formed on the inner surface of the holding claw 43 in the vicinity of the left end, and an annular engagement with the engagement protrusion 44 in the middle of the shaft portion 6a. The groove 6c may be formed. In this case, the engagement between the engagement protrusion 44 and the annular groove 6c effectively prevents the interdental cleaning brush 6 fixed to the holding portion 40 from falling off, and the shaft is made of a hard synthetic resin material or metal material. Even when the portion 6a is formed, the interdental cleaning brush 6 is prevented from falling off. When the shaft portion 6a is made of an elastomer or a rubber material, the annular groove 6c is omitted, and the engaging protrusion 44 is bited into the outer peripheral portion of the shaft portion 6a, so that the interdental cleaning brush 6 is effectively removed. Can be prevented.
[0022]
Moreover, as shown in FIG. 7, you may provide the protrusion 6d which can engage with the 1st slit 41 or the 2nd slit 42 in the base end part of the axial part 6a so that it may protrude. In this case, the interdental cleaning brush 6 can be attached in a state where the rotation is restricted with respect to the holding portion 40, and the operability of the interdental cleaning brush 6 is improved. Note that a protrusion may be provided instead of the protrusion 6d.
[0023]
Next, the operation of the electric interdental cleaning brush 1 will be described.
When the cap member 20 is screwed to the holder member 10, first, as shown in FIG. 4, the seal ring 14 is pressed against the seal surface 23 to seal the inside of the holder member 10 in a liquid-tight state. When the screw 20 is screwed at a predetermined angle, as shown in FIG. 5, the cap-side contact piece 34 is pressed against the holder-side contact piece 33 in a state where the inside of the holder member 10 is sealed in a liquid-tight manner, and the power supply circuit is closed. Then, the electric motor 7 is rotationally driven to apply vibration to the interdental cleaning brush 6.
[0024]
On the other hand, when the cap member 20 is rotated 90 ° to 150 ° in the reverse direction, the cap-side contact piece 34 is separated from the holder-side contact piece 33 as shown in FIG. 2, and the electric motor 7 stops. At this time, the seal ring 14 is held in pressure contact with the seal surface 23, and the holder member 10 is held in a liquid-tight state. Moreover, in this state, the rotation of the cap member 20 is restricted when the seal ring 14 is pressed against the seal surface 23, and the electric motor 7 is driven by inadvertent rotation or the cap member 20 falls off. Is prevented. From the next time, the cap member 20 is rotated and switched between the state shown in FIG. 5 and the state shown in FIG. 2 to switch the power supply circuit ON / OFF.
[0025]
Thus, since the gap between the cap member 20 and the holder member 10 is sealed by the seal ring 14 within the operation range of the cap member 20 that switches ON / OFF the energization to the electric motor 7, the inside of the holder member 10 is always liquid. It becomes possible to hold in a dense state. Moreover, in order to drive the electric motor 7 even when the cap member 20 is loosened and the gap between the cap member 20 and the holder member 10 is not reliably sealed when the electric interdental cleaning brush 1 is used, FIG. As described above, the cap member 20 needs to be rotated, and the gap between the cap member 20 and the holder member 10 is thereby sealed, so that it is possible to reliably prevent entry of water or the like into the holder member 10 during use. It becomes possible. Even if the cap member 20 is loosened and washed with water or the like, if the loosening is within a range where the sealing effect of the seal ring 14 can be obtained, water or the like can be reliably prevented from entering. It becomes.
[0026]
By making the cap-side contact piece 34 contact / separate from the holder-side contact piece 33, it is possible to switch on / off the energization of the electric motor 7, so that the switch structure of the power feeding circuit can be simplified and The seal structure can also be simplified, and the configuration of the main unit 5 can be greatly simplified.
[0027]
Since the power supply circuit can be constituted by the three members of the spring terminal 31, the cap-side contact piece 34, and the holder-side contact piece 33, the number of parts can be reduced as compared with the case where the spring terminal is provided in the cap member. The mold structure for molding 20 can be greatly simplified. Further, the spring terminal 31 and the holder side contact piece 33 can be easily fixed to the terminals of the electric motor 7 by soldering or the like, respectively, and the cap side contact piece 34 is also a part of the protruding portion 26 exposed to both sides of the contact portion 34c. Can be easily assembled by forming the flat portion 26a, so that the assembling property of the three members constituting the feeder circuit can be greatly improved.
[0028]
Further, the seal ring 14 can surely prevent the entry of toothpaste water into the meshing portion of the female screw portion 21 and the male screw portion 12, and the toothpaste water is cured at the meshing portion of the screw portions 12, 21. Thus, it is possible to prevent a problem that the rotation operation of the cap member 20 becomes difficult.
[0029]
In this embodiment, the power supply circuit is switched ON / OFF by rotating the cap member 20, but a separate switch is provided in the power supply circuit, and the power supply circuit is switched ON / OFF by operating this switch. May be.
[0030]
Further, as shown in FIG. 8, a play G is provided between the male screw portion 12 and the female screw portion 21 so that the cap member 20 is screwed to a position immediately before energization of the electric motor 7, and the cap member 20 is moved. By performing the pushing operation, the cap-side contact piece 34 is brought into contact with the holder-side contact piece 33 via the play G between the male screw portion 12 and the female screw portion 21 to close the power feeding circuit, and the pushing operation of the cap member 20 is interrupted. By doing so, the cap member 20 may be returned to the original position by the spring force of the spring terminal 31, the cap-side contact piece 34 may be separated from the holder-side contact piece 33, and the feeding circuit may be opened.
[0031]
Further, as shown in FIG. 9, a cap member 20A is provided in which the right half of the cap member 20 is omitted, a protruding portion 26A is formed on the back end surface of the cap member 20A, and the seating portion 34b is connected to the back end surface of the cap member 20A. You may fix the cap side contact piece 34 in the state contacted to.
[0032]
Next, another embodiment in which the configuration of the liquid-tight battery holder 2 is partially changed will be described. The same members as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 10, the liquid-tight battery holder 2B has a female screw part 50 formed on the holder member 10B and a male screw part 55 formed on the cap member 20B. The liquid-tight battery holder 2B is configured as follows. .
A female screw portion 50 is provided in the vicinity of the right end of the holder member 10B, and a seal portion 51 having an inner diameter smaller than that of the female screw portion 50 is formed at the right end portion of the holder member 10B. A seal surface 52 is formed on the surface.
[0033]
A male screw portion 55 that is screwed into the female screw portion 50 is formed on the left portion of the cap member 20B, and a grip portion 56 is formed on the right portion of the cap member 20B, between the male screw portion 55 and the grip portion 56. A mounting portion 57 having a diameter larger than that of the male screw portion 55 is formed. The mounting portion 57 is fitted with a seal ring 58 that can be fitted into the sealing surface 52 in a liquid-tight manner. A columnar protrusion 59 is formed to protrude leftward.
[0034]
The holder-side contact piece 33 is extended rightward to the vicinity of the female screw portion 50, the right end portion is bent inward, the cap-side contact piece 34 is fixed to the left side of the male screw portion 55, and the cap member 20B is attached to the holder. The holder member 20B is closed in a liquid-tight manner in a state where the seal ring 58 is fitted into the seal portion 51 and the outer peripheral surface thereof is pressed against the seal surface 52 by screwing into the member 10B. Further, by screwing, the cap side contact piece 34 is pressed against the holder side contact piece 33 and the power feeding circuit is closed.
[0035]
Next, a modified example in which the configuration of the cap side contact piece 34 is partially changed will be described.
As shown in FIG. 11, a cap-side contact piece 34A in which a plurality of engaging protrusions 60 that protrude toward the inside of the fitting hole 34a is formed on the seating part 34b, and the seating part 34b is formed by the protrusions 26, 26A, The cap-side contact piece 34A may be fixed to the cap members 20, 20A, and 20B by engaging the engaging protrusion 60 with the outer peripheral surfaces of the protrusions 26, 26A, and 59 when attached to the cap 59.
Moreover, as shown in FIG. 12, you may use the cap side contact piece 34B which formed the contact part 34c in the cantilever shape.
[0036]
Further, as shown in FIG. 13, a cap-side contact piece 34 </ b> C provided with a bottomed cylindrical contact portion 61 and formed with an annular locking projection 62 projecting inward in the vicinity of the base end portion of the contact portion 61 is used. An annular groove (not shown) that engages with the locking projection 62 is formed in the vicinity of the tip of each of the protrusions 26, 26A, 59, and the locking projection 62 is engaged with this annular groove to contact the cap side. The piece 34C may be fixed to the cap members 20, 20A, 20B.
[0037]
The cap-side contact pieces 34, 34A to 34C may be fixed to the cap members 20, 20A, 20B with an adhesive such as hot melt without melting the protrusions 26, 26A, 59.
[0038]
Next, oral hygiene tools other than the interdental cleaning brush 6 that can be detachably attached to the holding unit 40 will be described.
As the oral hygiene tool, as shown in FIG. 14, a toothbrush 70 may be used in which a flocking table 70a is formed at the tip of the shaft portion 6a, and a plurality of hair bundles 70b are implanted on the flocking table 70a.
As the oral hygiene tool, as shown in FIG. 15, a gingival papilla, in which an annular head 71a is formed at the tip of the shaft 6a, and a rubber member 71b having a sharp tip is attached to the head 71a. A massage tool 71 may be used.
[0039]
Furthermore, as the oral hygiene device, as shown in FIG. 16, a gingival massage device in which a bag-like rubber member 72a is attached to the tip of the shaft portion 6a and a plurality of protrusions 72b are formed on the upper surface of the rubber member 72a. 72 may be used.
Furthermore, as the intraoral hygiene device, as shown in FIG. 17, a pair of arm portions 73a is formed at the distal end portion of the shaft portion 6a, and dental floss 73b is stretched between the distal end portions of both arm portions 73a. A floss unit 73 may be used.
[0040]
Next, the vibration form of the interdental cleaning brush 6 by the vibration generating means 3 will be described.
This vibration generating means 3 generates vibration by rotating the eccentric weight 8, and when the steel wire of the flocked portion 6b is arranged coaxially with the axis of the shaft portion 6a as shown in FIG. As shown in FIG. 19, the tip of the flocked portion 6b rotates clockwise or counterclockwise along the circumference of the diameter (amplitude) R1. Thus, when the hair transplant part 6b is arrange | positioned coaxially with the axial part 6a, when the hair transplant part 6b is inserted between teeth and it vibrates, an interproximal peripheral part will be mainly cleaned. In addition, when the flocked portion 6b is moved back and forth in the axial direction in an excited state, the cleaning effect can be further enhanced.
[0041]
Further, as shown in FIG. 20, when the steel wire of the flocked portion 6b is bent about 90 ° from the proximal end portion, the tip of the flocked portion 6b is a circle having a diameter (amplitude) R2 as shown in FIG. It will rotate clockwise or counterclockwise along the circumference. Thus, when the hair transplant part 6b is bent, the hair transplant part 6b advances and retreats between the teeth, and the space between the teeth is mainly cleaned.
[0042]
Further, in the vibration generating means 3, vibration is applied to the interdental cleaning brush 6 via the holder member 10, so that the amplitudes R1 and R2 and the rotation speed of the tip portion of the flocked portion 6b depend on the holding position of the holder member 10. (Frequency) can be adjusted.
That is, as shown in FIG. 22, as the holding position of the holder member 10 is moved to the distal end side, the effect of restraining the amplitude works and the amplitude and the number of rotations become smaller. It can be seen that when the rear end side is held and it is desired to brush weakly, the brushing force can be adjusted by holding the front end side of the holder member 10.
[0043]
In the present embodiment, the present invention is applied to the liquid-tight battery holder 2 of the portable electric interdental cleaning brush 1, but the present invention can also be applied to a battery holder that is not liquid-tight, and the electric interdental cleaning brush. The present invention can be applied to battery holders such as flashlights other than 1.
[0044]
【The invention's effect】
According to the battery holder of the first aspect, it is possible to form a power supply circuit to the output means by the three members of the cap side contact piece, the holder side contact piece, and the spring terminal, and the spring terminal is fixed in the cap member. The number of parts can be reduced and the assembly of these three members can be improved, and the cap member only needs to be formed on the back end surface of the cap member, so that the cap member is molded. The effects such as simplification of the mold structure can be obtained.
According to the battery holder of the second aspect, the contact portion and the fitting hole can be formed by a single press molding, and the contact portion is brought into contact with the tip portion of the protruding portion. The effect of being able to effectively prevent the deformation is obtained.
[0045]
According to the battery holder of the third aspect, since the engaging protrusion that protrudes toward the center side and engages with the protruding portion is formed in the portion facing the fitting hole of the seating portion. The cap-side contact piece can be easily fixed to the cap member by press-fitting the protrusion and engaging the engagement protrusion with the peripheral wall of the protrusion.
According to the battery holder of the fourth aspect, the contact portion is provided across the front side of the tip of the protruding portion, and the cap side is formed via the flat portion formed by melting a part of the protruding portion exposed on both sides of the contacting portion. Since the contact piece is fixed to the cap member, the cap-side contact piece can be easily and reliably fixed to the cap member.
[Brief description of the drawings]
1 is a longitudinal sectional view of an electric interdental cleaning brush.
[Fig. 2] Longitudinal longitudinal sectional view of the electric interdental cleaning brush
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a view corresponding to FIG. 2 at the seal start position.
FIG. 5 is a diagram corresponding to FIG. 2 when the power feeding circuit is operated in the ON state.
FIG. 6 is a perspective view near the holding portion.
FIG. 7 is a longitudinal sectional view of the vicinity of the holding part showing a modification of the holding part and the shaft part
FIG. 8 is a longitudinal sectional view of an essential part showing a modification of a male screw part and a female screw part.
FIG. 9 is a view corresponding to FIG. 2 showing a modification of the cap member.
10 is a view corresponding to FIG. 2 of a liquid-tight battery holder according to another embodiment.
FIG. 11 is a perspective view showing a first modification of the cap-side contact piece.
FIG. 12 is a perspective view showing a second modification of the cap-side contact piece.
FIG. 13 is a perspective view showing a third modification of the cap-side contact piece.
FIG. 14 is a perspective view of a toothbrush as an oral hygiene device.
FIG. 15 is a perspective view of a nipple massage device as an oral hygiene device.
FIG. 16 is a perspective view of a gingival massage device as an oral hygiene device.
FIG. 17 is a perspective view of a floss unit as an oral hygiene device.
FIG. 18 is an explanatory view of the vibration mode of the interdental cleaning brush.
FIG. 19 is a view on arrow A in FIG.
FIG. 20 is an explanatory diagram of the vibration mode of the interdental cleaning brush in a bent state.
FIG. 21 is a view taken in the direction of arrow B in FIG.
FIG. 22 is an explanatory diagram showing the relationship between the holding position and the frequency, etc.
[Explanation of symbols]
1 Portable Electric Interdental Cleaning Brush 29A Cap Member
2 Liquid-tight battery holder 26A Projection
3 Vibration generating means 2B Liquid-tight battery holder
4 Battery 10B Holder member
5 Main unit 20B Cap member
6 Interdental cleaning brush 50 Female thread
6a Shaft part 51 Seal part
6b Flocked part 52 Seal surface
6c annular groove 55 male screw part
6d ridge 56 gripping part
7 Electric motor 57 Mounting part
7a Rotating shaft 58 Seal ring
8 Eccentric weight 59 Projection
10 Holder member 34A Cap side contact piece
11 Small diameter part 60 Engagement protrusion
12 Male screw part 34B Cap side contact piece
13 Ring mounting groove 34C Cap side contact piece
14 Seal ring 61 Contact part
20 Cap member 62 Locking protrusion
21 Female screw part 70 Toothbrush
22 seal part 70a flocking table
23 Seal surface 70b Hair bundle
24 Grip part 71 Nipple massage tool
25 Step 71a Head
26 Protruding part 71b Rubber member
26a Flat part 72 Gingival massage device
30 Wiring means 72a Rubber member
31 Spring terminal 72b Protrusion
32 Groove 73 Floss unit
33 Holder side contact piece 73a Arm part
34a Fitting hole 73b Dental floss
34b Seating part
34c contact part
34 Cap side contact piece
40 Holding part
41 1st slit
42 Second slit
43 Holding claws
44 engaging projection

Claims

A holder member capable of accommodating a battery therein, one end of which is opened, and a holder member provided with output means driven by the battery in the other end;
A bottomed cylindrical cap member that closes one end opening of the holder member, and a cap member having a protrusion formed at the center of the back end surface;
A cap-side contact piece attached to the cap member, a disc-shaped seating portion having a fitting hole that can be fitted to the projecting portion, and a projecting shape formed at a substantially central portion of the seating portion. A cap-side contact piece having a contact portion capable of coming into contact with one electrode;
An axial direction is provided along the inner wall surface of the holder member, one end is disposed near one end of the holder member, the other end is electrically connected to one terminal of the output means, and the cap member is attached to the holder member. In the attached state, a holder side contact piece whose one end abuts on the seating part,
One end is directly fixed and electrically connected to the other terminal of the output means, the other end is disposed so as to be in contact with the other electrode of the battery, and the cap member is attached to the holder member. A spring terminal that is in pressure contact with the electrode and presses one electrode of the battery against the contact portion of the cap-side contact piece;
A battery holder comprising:

The protrusion is formed at the center of the back end surface of the cap member, a fitting hole is formed at the center of the seating part, the seating part is formed in an annular shape, and a contact part is formed so as to cross the fitting hole. 2. The battery holder according to claim 1, wherein the battery holder is configured such that the contact portion extends to the front side of the tip of the protruding portion in a state where the cap-side contact piece is assembled to the cap member.

3. The battery holder according to claim 1, wherein an engaging protrusion that protrudes toward the center side and engages with the protruding portion is formed at a portion facing the fitting hole of the seating portion.

The cap-side contact piece is fixed to the cap member through a flat portion formed by melting a part of the protruding portion exposed on both sides of the contact portion by providing a contact portion straddling the front side of the tip of the protruding portion. The battery holder according to claim 2, characterized in that: