JP4463395B2

JP4463395B2 - Capacitor motor and manufacturing method thereof

Info

Publication number: JP4463395B2
Application number: JP2000230447A
Authority: JP
Inventors: 宗忠佐藤; 茂樹西村; 哲生橘; 英之菊地
Original assignee: Panasonic Ecology Systems Co Ltd; Shizuki Electric Co Inc
Current assignee: Panasonic Ecology Systems Co Ltd; Shizuki Electric Co Inc
Priority date: 2000-07-31
Filing date: 2000-07-31
Publication date: 2010-05-19
Anticipated expiration: 2020-07-31
Also published as: JP2002051513A

Description

【０００１】
【発明の属する技術分野】
本発明は、扇風機または換気扇等のファン駆動に用いられ、コンデンサを取り付ける端子台を有する小型のコンデンサ電動機に関する。
【０００２】
【従来の技術】
近年、この種のコンデンサ電動機には、合理化を追求するために、固定子鉄心に巻装した固定子巻線の電気的接続にプリント基板または導電板をモールド成型した端子台を用いると同時に、これらのプリント基板上または端子台上にコンデンサを装着することで製造工数の削減および部品点数の削減を図る構成が普及してきている。
【０００３】
以下、そのコンデンサ電動機について図１３および図１４を参照しながら説明する。
【０００４】
図１３および１４に示すように、固定子鉄心１０１に樹脂成型等による絶縁体１０２を装着したものに巻線１０３を巻回し、巻線１０３の上方にプリント基板１０４を載置し、固定子１１４を構成する。プリント基板１０４には、その中央の開口１１３を取り囲むように巻線１０３を絡げた導電ピン１１１と、コンデンサ１０７と、温度ヒューズ１０８とを配設し、それぞれを電気的に接続する。そして固定子１１４をハウジングＡ１０５およびハウジングＢ１０６内部に収納するとともに、軸受１１５を圧入嵌合した回転子１１０を回転自在に保持する構成であった。
【０００５】
【発明が解決しようとする課題】
このような従来の構成では、コンデンサ１０７の電極部１０７ａはコンデンサ厚み寸法Ｈのほぼ中央に設けられているのが一般的で、このコンデンサ１０７をプリント基板１０４の上面に載せるように装着するため、ハウジングＢ１０６と電極部１０７ａとの電気的な絶縁距離すなわち空間距離を確保する必要性からハウジングＢ１０６の軸方向寸法を大きくすることになり、電動機の軸方向の全長が大きくなるという課題があった。また、選定するコンデンサ１０７の形状寸法が制限され、これによって使用できるコンデンサの容量が制限されるという課題があった。
【０００６】
本発明は、このような従来の課題を解決するものであり、コンデンサをモータハウジングの内部に収納する電動機において、電動機の軸方向寸法を小さくすることができるコンデンサ電動機を提供することを第１の目的とする。
【０００７】
また、コンデンサ容量の使用範囲を拡大することのできるコンデンサ電動機を提供することを第２の目的とする。
【０００８】
【課題を解決するための手段】
本発明のコンデンサ電動機の第１の目的を達成するために第１の手段は、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続される２つのコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備えた端子台本体を、前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設け、ハウジング内に前記コンデンサが接続された前記端子台本体と前記固定子と回転子を収納したコンデンサ電動機において、前記コンデンサ接続用端子は、前記コンデンサの端子が２つとも同一方向から挿着されるように、かつ、前記コンデンサが前記コンデンサ電動機の回転子の軸に対して略直角方向に挿着されるように形成したものである。
【０００９】
本発明によれば、コンデンサをモータハウジングの内部に収納する電動機において、電動機の軸方向寸法を小さくすることができるコンデンサ電動機を提供することができる。
【００１０】
また、第２の目的を達成するために第２の手段は、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続される２つのコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備え、回転子を挿通可能とする開口が形成された端子台本体を、前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設け、ハウジング内に前記コンデンサが接続された前記端子台本体と前記固定子と回転子を収納したコンデンサ電動機において、前記コンデンサ接続用端子は、前記コンデンサの端子が２つとも同一方向から挿着されるように、かつ、前記コンデンサが前記回転子の軸に対して略直角方向に挿着されるように形成したものである。
【００１１】
本発明によれば、コンデンサ容量の使用範囲を拡大することのできるコンデンサ電動機を提供することができる。
【００１２】
【発明の実施の形態】
本発明の請求項１に記載の発明は、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続される２つのコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備えた端子台本体を、前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設け、ハウジング内に前記コンデンサが接続された前記端子台本体と前記固定子と回転子を収納したコンデンサ電動機において、前記コンデンサ接続用端子は、前記コンデンサの端子が２つとも同一方向から挿着されるように、かつ、前記コンデンサが前記コンデンサ電動機の回転子の軸に対して略直角方向に挿着されるように形成したものであり、この端子とモータハウジングとの絶縁距離に余裕が生じ、電動機の軸方向寸法を小さくすることができるという作用を有する。
【００１３】
以下、本発明の実施の形態について図１〜図１２を参照しながら説明する。
【００１４】
（実施の形態１）
この実施の形態１のコンデンサ電動機は図１に示すように、固定子鉄心１および固定子鉄心１と一体化した絶縁体２を介し巻装された固定子巻線８からなる固定子３５と、固定子巻線８の上方に絶縁体２を介して載置され、コンデンサ２５などの電気部品を備えた端子台本体１５と、固定子３５内に挿入される回転子９と、回転子９を回転可能に保持し、固定子３５を内設するモータハウジングａ１２およびモータハウジングＢ１３とから構成されている。
【００１５】
固定子鉄心１は、図２に示すように、外周で磁路を形成する円弧状の継鉄部１ａにおいて複数に分割積層されたものを、樹脂により成型された絶縁体２に絶縁用フィルム（図示せず）を装着したもので上下から挟んで一体化してセグメントコアを構成する。絶縁体２は、固定子巻線８の倒れを防止する内壁部３および外壁部４を樹脂等で一体に成型されたもので、この外壁部４の複数箇所に角柱状の凸部６が立設されている。
【００１６】
なお、ここでは凸部６を角柱状としているが、円柱状または円錐、角錐形状でも良い。
【００１７】
そして、図３に示すように、セグメントコアには固定子鉄心１と固定子巻線８の電気的絶縁を行う絶縁体２を介して固定子巻線８が巻装され、その始終端は導電ピン７に巻かれている。
【００１８】
さらに、セグメントコアに固定子巻線８が巻装したものは、図４に示すように、二つの主巻線８ａと二つの補助巻線８ｂとが集中巻装されたものを交互に配列し、それぞれを互いに結合し一体に形成され固定子３５を構成する。それぞれの巻線の始終端を絡げ保持する絶縁体２の内壁部３の円柱状の凸部５に設ける導電ピン７は、主巻線８ａを巻装する二つの絶縁体２のうち一つの絶縁体２に主巻線巻き始め用導電ピン７ａと主巻線巻き終わり用導電ピン７ｂの２本と、同様に隣接する補助巻線を巻装する二つの絶縁体２のうち一つの絶縁体２に補助巻線巻き始め用導電ピン７ｃと補助巻線巻き終わり用導電ピン７ｄの２本のみ構成する。具体的な巻装構成は、この主巻線巻き始め用導電ピン７ａまたは補助巻線巻き始め用導電ピン７ｃから第１の主巻線８ａまたは補助巻線８ｂを巻装し、渡り線（図示せず）を中継して第２の主巻線８ａまたは補助巻線８ｂを巻回しさらに渡り線を引き回して主巻線巻き終わり用導電ピン７ｂまたは補助巻線巻き終わり用導電ピン７ｄにて巻き終える構成である。
【００１９】
端子台本体１５は、図５に示すように、固定子巻線８と接続される複数の端子２４と、端子台本体１５の外周部に外部部品の一つであるリード線３１を有するコネクタ２９と接続する外部部品接続用端子であるところのコネクタ接続用端子２１と、この外周部および内周側以外の端面にコンデンサ素子２５の一対のタブ形状の端子２６を接続するコンデンサ接続用端子２０と、温度ヒューズ１８の電気的な取り付け構造部１５ａと、電流ヒューズ１９の電気的な取り付け構造部１５ｂと、導電ピン７を係合するピン係合孔２２とを有し、樹脂材料等によりモールド成型して半円環状に形成されて開口１６を有している。また、図７に示すように、この導電板１７は、コネクタ接続用端子２１と、コンデンサ接続用端子２０と、温度ヒューズ１８の電気的な取り付け構造部１５ａと、電流ヒューズ１９の電気的な取り付け構造部１５ｂと、導電ピン７を係合するピン係合孔２２とを電気的にいくつかのグループになるように連結して端子台本体１５に内蔵されるものである。コンデンサ接続用端子２０は外方に向けて水平に開放されたタブ形状であり、端子の下面と、両側から折り返された上面との間で、弾性を有して、挿入されるコンデンサ２５の端子２６を挟持する。また、端子台本体１５の下面には係合部２３を設け、図７に示すように、係合部２３は絶縁体２の凸部６と互いに係合する構成とする。
【００２０】
さらに、端子台本体１５の外周部の径寸法はモータハウジングａ１２およびモータハウジングＢ１３の内周面の径寸法より小寸とするとともに、回転子９が回転子９の軸１０方向に挿通可能となる径寸法である半円状の開口１６が形成されている。また、ここでは端子台本体１５の形状を半円環状としているがその外形が扇形もしくは多角形でもよく、要は内縁側に回転子９が挿通可能である開口となる径寸法の開口１６が形成され、温度ヒューズ１８や電流ヒューズ１９等の取り付け可能なスペースが確保できる形状であればよい。さらに、開口１６の形状も円形状に限るものではなく、コの字型または多角形状でも良い。
【００２１】
図６に示すように、この端子台本体１５は、図４のセグメントコアに固定子巻線８が巻装したものを複数組み合わせた固定子３５の上方に載置され、図７に示すように絶縁体２の凸部６によって下方から支えられ、端子台本体１５の下面の係合部２３により周方向および径方向に移動しないように固持される。そして、コンデンサ２５の端子２６をコンデンサ接続用端子２０に挿着したとき、コンデンサ２５の端子２６を有する面は回転子の軸１０の外周面より内側に位置する。
【００２２】
なお、ここでは電流ヒューズ１９を取り付けた状態を説明しているが、電動機の使用環境によっては電流ヒューズ１９が不要の場合もある。
【００２３】
コンデンサ２５は、図８に示すように、両端側の一対のタブ形状の端子２６は下面に水平に板状に形成され、端子台本体１５に取り付けるとき、このコンデンサ２５は回転子の軸１０に対し、コンデンサ接続用端子２０に略直角方向に挿入することでコンデンサ接続用端子２０とコンデンサ２５を電気的に接続して一体化する構成とする。
【００２４】
また、一対の端子２６はコンデンサ２５の厚み方向の下方に位置するものである。ここで厚み方向の下方とは、回転子９の軸方向において固定子鉄心１により近づく側を意味する。
【００２５】
また、コンデンサ２５のタブ形状の端子２６を有する面の反対側の面の両端は、Ｒ部２７をなし、固定子３５の外周面に沿う形状となり、図６に示すようにコンデンサ２５の収容スペースを有効に活用できる。
【００２６】
なお、ここではコンデンサ２５の両端にＲ部２７を形成したが、面取り形状でもその作用効果に差異はない。
【００２７】
また、コンデンサ２５には、絶縁体２の内壁部３に導電ピン７の圧入保持ができる細孔を設けた円柱状の凸部５を立設するとともに、コンデンサ２５の下面に爪部２８を設ける。図９に示すように、コンデンサ２５を端子台本体１５に固定する際には、端子２６をコンデンサ接続用端子２０に挿着するとともに、爪部２８の端子２６側の弾性ガイド部２８ａの先端部が、凸部５に当接して外方へ変形し、凸部５の外周に沿って端子台本体１５側へ進出し、弾性ガイド部２８ａの先端部の内側面が凸部５の外周面にかかえこむように爪部２８と係合する。この先端部は内向しているため、コンデンサ２５が反端子台本体１５側に移動するのを防ぎ、端子２６の抜け防止効果を有する。
【００２８】
図１０に示すように、端子台本体１５の外周部のコネクタ接続用端子２１に接続するコネクタ２９は、リード線３１と端子部３０とを囲むケース部３２と、このケース部３２の長手方向のほぼ中央で鍔部３３とを樹脂等で一体に成形して形成され、図１に示すように、端子台本体１５のコネクタ接続用端子２１にコネクタ２９を接続したときに、鍔部３３はモータハウジングＢ１３に設けたコネクタ挿入孔１４の外周部に当接される。
【００２９】
また、図１１に示すように、コネクタ２９のケース部３２のリード線出口側にリード線３１を囲み、かつ端子部３０にかからないように樹脂を充填し充填部３４を形成し、充電部とケース部３２の間を埋める構成とする。また、コネクタ２９のケース部３２を端子部３０ごとに、つまり二つに分離して成形し、鍔部３３によって一体化して保持する。
【００３０】
なお、充填部３４を形成する樹脂材料はケース部３２を形成する樹脂材料と同じものでも良いし、異材質でも良い。要はケース部３２とリード線３１の充電部との隙間を埋めることができれば良い。
【００３１】
このコンデンサ電動機の製造するときは、巻装された固定子巻線８のコイルエンド部分に絶縁体２を介して端子台本体１５を取り付けた固定子３５を、反端子台本体側からモータハウジングａ１２に圧入嵌合し、軸受１１を取り付けた回転子９を端子台本体１５の開口１６に挿入設置した後、コンデンサ２５の端子２６を回転子の軸１０に対し略直角方向にコンデンサ接続用端子２０に差し込み、モータハウジングＢ１３を軸受１１を保持してフランジ同士を合わせ、モータハウジングａ１２とネジ等で固定し、コネクタ挿入孔１４にコネクタ２９を挿入しコネクタ接続用端子２１と接続する。
【００３２】
このように本発明の実施の形態１のコンデンサ電動機によれば、コンデンサ２５に設けるタブ形状の端子２６が、コンデンサ接続用端子２０に合致するように回転子９の軸に対して略直角方向に形成され、軸方向で固定子巻線８のコイルエンド部分により近く位置することになるから、この端子２６とモータハウジングＢ１３との必要な電気的絶縁距離すなわち空間距離に余裕が生じ、モータハウジングＢ１３の軸方向寸法を極力小さくすることができるため、電動機の軸方向寸法を小さくすることができる。
【００３３】
また、回転子９を挿通可能とする開口１６が形成された端子台本体１５のコンデンサ接続用端子２０を、コンデンサ２５が回転子の軸１０に対して略直角方向に挿着されるように形成したので、モータの組立工程において回転子９を端子台本体１５に設けた開口１６に挿通して組立した後、コンデンサ２５の軸方向の寸法がおさまる最小限の空間があればコンデンサ２５を端子台本体１５に装着することができることになる。また、コンデンサ２５を回転子の軸１０を間に挟んで差し込むことからコンデンサ２５の形状寸法に対する制約が緩和されコンデンサ容量の使用範囲を拡大することができる。
【００３４】
また、コンデンサ２５のタブ形状の端子２６をコンデンサ２５の厚み方向の固定子鉄心側に設けることにしたので、この端子２６とモータハウジングＢ１３との必要な電気的絶縁距離すなわち空間距離に余裕が生じ、モータハウジングＢ１３の軸方向寸法を小さくでき、電動機の軸方向寸法を小さくすることができる。
【００３５】
また、コンデンサ２５を端子台本体１５に接続した際に、コンデンサ２５の端子２６を有する面を、回転子９の外周面よりも内側に位置させたので、コンデンサ２５の寸法形状を固定子鉄心１の外周方向と内周方向に拡大することができ、使用できる容量のコンデンサの制約が緩和される。
【００３６】
また、絶縁体２の外壁部４に設けた角柱状の凸部６と端子台本体１５の底面に設けた係合部２３とを互いに係合することにしたので、固定子鉄心１の周方向に対する端子台本体１５の位置決めが容易にできる。
【００３７】
また、絶縁体２の内壁部３に設けた円柱状の凸部５の外周面とコンデンサ２５の底面に設けた爪部２８が係合するようにしたので、固定子鉄心１および端子台本体１５に対するコンデンサ２５の位置決めが確実にできる。
【００３８】
また、導電ピン７を主巻線８ａを巻装する一つの絶縁体２と、隣接の補助巻線８ｂを巻装する一つの絶縁体２に設けるので、この導電ピン７を介して取り付ける端子台本体１５の形状を最小限にし、すなわち２箇所の絶縁体２に跨る範囲だけでよいため、端子２４を電気的に連結するように形成された導電板１７の面積や使用する樹脂材料を最小限にすることができる。
【００３９】
また、コネクタ２９に鍔部３３を一体に成形したので、ハウジングＢ１４に設けたコネクタ挿入孔１４を他の部品を用いることなく覆うことができ、埃等の侵入を防止できる。
【００４０】
また、コネクタ２９のケース部３２のリード線側に樹脂を充填し充填部３４を形成したので、リード線側からの雨水または結露水等の浸入を防止することができる。
【００４１】
また、コネクタ２９のケース部３２を端子部３０毎に分離して樹脂成形したので、端子部３０間の耐トラッキング性の向上が図られる。
【００４２】
また、モータハウジングａ１２に固定子３５を圧入嵌合した後、軸受１１を取り付けた回転子９を端子台本体１５に形成された開口１６に挿入し、続いてコンデンサ２５の端子２６を回転子の軸１０に対し略直角方向からコンデンサ接続用端子２０に差し込む組立工程を有するので、コンデンサ２５の端子２６側の面が軸受１１に干渉することなくスムーズに組み立てることができる。
【００４３】
（実施の形態２）
図１２に示すように、モータハウジングＢ１３の外側面にコンデンサ挿通孔３５を設け、コンデンサ挿通孔３６に挿入してコンデンサ２５を端子台本体１５に取り付けたとき、コンデンサ２５はモータハウジングＢ１３から突出する構成とする。その他の同一符号の構成要素は実施の形態１と同様である。
【００４４】
コンデンサ２５を端子台本体１５に取り付けるときには、固定子鉄心１を圧入嵌合したモータハウジングａ１２に、軸受１１を取り付けた回転子９を設置し、端子台本体１５を固定子巻線８の上方に載置し、モータハウジングＢ１３を被せモータハウジングａ１２に固定した状態で、コンデンサ２５の端子２６をモータハウジングＢ１３の外方からコンデンサ挿通孔３６に挿入してコンデンサ接続用端子２０に挿着することとなる。
【００４５】
このように本発明の実施の形態２のコンデンサ電動機によれば、コンデンサ２５はモータハウジングＢ１３の外方から、挿入できるので、モータハウジングＢ１３を取り外すことなく、コンデンサの取り付けができ、コンデンサの交換または、コンデンサのみ異なる機種の製造が容易となる。
【００４６】
【発明の効果】
以上の実施例から明らかなように本発明によれば、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続されるコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備えた端子台本体を、前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設けたコンデンサ電動機において、前記コンデンサ接続用端子を、前記コンデンサが前記コンデンサ電動機の回転子の軸に対して略直角方向に挿着されるように形成したので、コンデンサの端子が軸方向で固定子巻線のコイルエンド部分により近く位置することとなり、コンデンサの端子と必要な電気的絶縁距離すなわち空間距離を確保するモータハウジングの軸方向寸法を小さくでき、電動機の軸方向寸法を小さくすることができるコンデンサ電動機を提供することができる。
【００４７】
また、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続されるコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備え、回転子を挿通可能とする開口が形成された端子台本体を、前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設けたコンデンサ電動機において、前記コンデンサ接続用端子を、前記コンデンサが前記回転子の軸に対して略直角方向に挿着されるように形成したので、モータの組立工程において回転子を端子台本体に設けた開口に挿通して組み立てた後、電動機の外郭であるモータハウジングの内面との間に、回転子の軸方向のコンデンサの寸法がおさまる最小限の空間があれば、コンデンサを端子台本体に装着することができることとなる。
【００４８】
また、コンデンサの端子を、前記コンデンサの固定子鉄心側に配設する構成としたので、この端子とモータハウジングとの間の必要な電気的絶縁距離に余裕が生じ、モータハウジングの軸方向寸法を小さくでき、電動機の軸方向寸法を小さくすることができる。
【００４９】
また、コンデンサの端子を有する面が回転子の外周面より内側に位置する構成としたので、コンデンサの大容量化による大型のコンデンサの寸法形状にも対応でき、コンデンサ容量に対する制約が緩和されコンデンサ容量の使用範囲を拡大することができる。
【００５０】
また、絶縁体に巻回した固定子巻線のたおれを防止する内壁部および外壁部を設け、前記外壁部に凸部を形成するとともに、端子台本体の下面に前記凸部と係合する係合部を設けたので、固定子鉄心の周方向または軸方向に対する端子台本体の位置決めが容易かつ確実になり、組み付け精度の向上を図ることができる。
【００５１】
また、絶縁体に巻回した固定子巻線のたおれを防止する内壁部および外壁部を設け、前記内壁部に前記固定子巻線の始終端を絡げ保持する導電ピンを圧入保持する細孔を設けた凸部を形成するとともに、コンデンサの下面に前記凸部に係合する爪部を設けたので、コンデンサを端子台本体に接続する際、端子台本体および絶縁体に対するコンデンサの位置決めが容易にかつ確実になり、組み付け精度の向上を図ることができる。
【００５２】
また、絶縁体を介して巻装される固定子巻線は少なくとも二つの主巻線と少なくとも二つの補助巻線を個別に集中巻装され交互に配列してなり、それぞれの巻線の始終端を絡げ保持する導電ピンを、前記主巻線を巻装する一つの絶縁体の内壁部の２ヶ所と、同じく隣接する前記補助巻線を巻装する一つの絶縁体の内壁部の２ヶ所のみに設ける構成としたので、取り付ける端子台本体を最小限に成形できることになり、成形のための樹脂および導電用端子の材料を合理化することができる。
【００５３】
また、端子台本体の外部部品接続用端子に接続されるコネクタは、リード線と端子部とを内部で連結するケース部と、前記コネクタを前記外部部品接続用端子に接続したとき、コンデンサ電動機の外郭をなすモータハウジングの外側面に当接する鍔部とからなり、これらを樹脂等で一体に成形したので、モータ内部への埃等の侵入の防止を別個の部品を用いることなく、品質の向上を図ることができる。
【００５４】
また、コネクタのケース部とリード線の充電部との間に樹脂を充填したので、複雑な構造を採用しなくても防水構造が実現でき、リード線側からの雨水や結露水等の浸入を防止でき品質の向上を図ることができる。
【００５５】
また、コネクタのケース部を端子部毎に分割して成形したので、端子部間の耐トラッキング性の向上が図れ、品質の向上を図ることができる。
【００５６】
また、絶縁体を介して端子台本体を取り付けた固定子を、反端子台本体側からコンデンサ電動機の外郭をなすモータハウジングに圧入嵌合し、軸受を取り付けた回転子を、前記端子台本体の前記回転子を挿通可能とする開口に挿入した後、コンデンサの端子を回転子の軸に対し略直角方向にコンデンサ接続用端子に挿着する組立工程を有するので、コンデンサの端子側の面が回転子軸側に拡大されるようなコンデンサ容量の大きいコンデンサを使用した場合、回転子に取り付けられた軸受にコンデンサが当たることなく組立作業を行うことができる。
【００５７】
また、外部からの電気部品と接続される外部部品接続用端子と、コンデンサの端子と接続されるコンデンサ接続用端子と、固定子鉄心に絶縁体を介して巻装した固定子巻線に接続される端子とを備えた端子台本体を前記絶縁体を介して前記固定子巻線の反固定子鉄心側に設けたコンデンサ電動機において、前記コンデンサ接続用端子を、前記コンデンサが回転子の軸に対して略直角方向に挿着されるように形成するとともに、前記コンデンサは前記コンデンサ接続用端子に挿着されたとき、コンデンサ電動機の外郭をなすモータハウジングに設けたコンデンサ挿通孔から突出させる構成としたので、モータハウジングを取り外すことなく、コンデンサを取り付けることができ、コンデンサの交換および後組立てが容易となる。
【図面の簡単な説明】
【図１】本発明の実施の形態１のコンデンサ電動機を示す側断面図
【図２】同コンデンサ電動機の絶縁体を装着した固定子鉄心であるセグメントコアを示す斜視図
【図３】同コンデンサ電動機のセグメントコアに固定子巻線を巻装した状態を示す斜視図
【図４】同コンデンサ電動機の固定子を示す平面図
【図５】同コンデンサ電動機の端子台本体を示す平面図
【図６】同コンデンサ電動機の端子台本体を固定子に載置した状態を示す断面図
【図７】同コンデンサ電動機の図６のａ−ａ線に沿う部分拡大断面図
【図８】同コンデンサ電動機のコンデンサを示す斜視図
【図９】同コンデンサ電動機のコンデンサケースの取り付け状態を示す一部透過の平面図
【図１０】同コンデンサ電動機のコネクタを示す斜視図
【図１１】同コンデンサ電動機のコネクタを示す断面図
【図１２】本発明の実施の形態２のコンデンサ電動機を示す側断面図
【図１３】従来のコンデンサ電動機を示す側断面図
【図１４】同コンデンサ電動機のプリント基板を示す平面図
【符号の説明】
１固定子鉄心
２絶縁体
３内壁部
４外壁部
５凸部
６凸部
７導電ピン
８固定子巻線
９回転子
１０回転子の軸
１１軸受
１５端子台本体
１６開口
２０コンデンサ接続用端子
２１コネクタ接続用端子（外部部品接続用端子）
２３係合部
２４端子
２５コンデンサ
２６端子
２８爪部
２９コネクタ
３０端子部
３２ケース部
３３鍔部
３４充填部
３５固定子
３６コンデンサ挿通孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a small-sized capacitor motor that is used for driving a fan such as an electric fan or a ventilation fan and has a terminal block to which a capacitor is attached.
[0002]
[Prior art]
In recent years, in order to pursue rationalization, this type of capacitor motor uses a terminal block molded with a printed circuit board or a conductive plate for electrical connection of the stator winding wound around the stator core. A configuration that reduces the number of manufacturing steps and the number of parts by mounting capacitors on a printed circuit board or terminal block has become widespread.
[0003]
Hereinafter, the capacitor motor will be described with reference to FIGS. 13 and 14.
[0004]
As shown in FIGS. 13 and 14, a winding 103 is wound around a stator core 101 with an insulator 102 formed by resin molding or the like, a printed circuit board 104 is placed above the winding 103, and a stator 114. Configure. The printed circuit board 104 is provided with a conductive pin 111 having a winding 103 wound around the central opening 113, a capacitor 107, and a thermal fuse 108, which are electrically connected to each other. The stator 114 is housed inside the housing A105 and the housing B106, and the rotor 110 into which the bearing 115 is press-fitted is rotatably held.
[0005]
[Problems to be solved by the invention]
In such a conventional configuration, the electrode portion 107a of the capacitor 107 is generally provided at substantially the center of the capacitor thickness dimension H, and the capacitor 107 is mounted so as to be placed on the upper surface of the printed circuit board 104. Due to the necessity of securing an electrical insulation distance between the housing B106 and the electrode portion 107a, that is, a spatial distance, the axial dimension of the housing B106 is increased, and there is a problem that the total axial length of the electric motor increases. In addition, the shape and size of the capacitor 107 to be selected is limited, which limits the capacity of the capacitor that can be used.
[0006]
SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and in a motor in which a capacitor is accommodated in a motor housing, the first object is to provide a capacitor motor that can reduce the axial dimension of the motor. Objective.
[0007]
It is a second object of the present invention to provide a capacitor motor that can expand the use range of the capacitor capacity.
[0008]
[Means for Solving the Problems]
In order to achieve the first object of the capacitor motor of the present invention, the first means includes an external component connection terminal connected to an external electrical component, and two capacitor connection terminals connected to the capacitor terminal. And a terminal block body having a terminal connected to a stator winding wound around the stator core via an insulator on the side opposite to the stator core of the stator winding via the insulator. In the housing The capacitor was connected In the capacitor motor that houses the terminal block main body, the stator, and the rotor, the capacitor connection terminal is such that both of the capacitor terminals are inserted from the same direction, and the capacitor is connected to the capacitor. It is formed so as to be inserted in a direction substantially perpendicular to the axis of the rotor of the electric motor.
[0009]
ADVANTAGE OF THE INVENTION According to this invention, the capacitor motor which can make the axial direction dimension of an electric motor small can be provided in the electric motor which accommodates a capacitor | condenser in the inside of a motor housing.
[0010]
In order to achieve the second object, the second means includes an external component connection terminal connected to an external electrical component, two capacitor connection terminals connected to the capacitor terminal, and a stator. A terminal block main body having a terminal connected to a stator winding wound around an iron core via an insulator and having an opening through which a rotor can be inserted. Provided on the anti-stator core side of the wire and in the housing The capacitor was connected In the capacitor motor that houses the terminal block main body, the stator, and the rotor, the capacitor connection terminal is configured such that both of the capacitor terminals are inserted from the same direction, and the capacitor is rotated. It is formed so as to be inserted in a direction substantially perpendicular to the child axis.
[0011]
ADVANTAGE OF THE INVENTION According to this invention, the capacitor | condenser motor which can expand the use range of a capacitor | condenser capacity | capacitance can be provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, an external component connecting terminal connected to an external electrical component, two capacitor connecting terminals connected to a capacitor terminal, and an insulator on the stator core A terminal block body provided with a terminal connected to a stator winding wound via, provided on the side opposite to the stator core of the stator winding via the insulator, The capacitor was connected In the capacitor motor that houses the terminal block main body, the stator, and the rotor, the capacitor connection terminal is such that both of the capacitor terminals are inserted from the same direction, and the capacitor is connected to the capacitor. It is formed so as to be inserted in a direction substantially perpendicular to the axis of the rotor of the electric motor. There is a margin in the insulation distance between this terminal and the motor housing, and the axial dimension of the electric motor can be reduced. It has the action.
[0013]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0014]
(Embodiment 1)
As shown in FIG. 1, the capacitor motor according to the first embodiment includes a stator core 1 and a stator 35 including a stator winding 8 wound through an insulator 2 integrated with the stator core 1. A terminal block body 15 mounted on the stator winding 8 via the insulator 2 and provided with electrical components such as a capacitor 25, a rotor 9 inserted into the stator 35, and the rotor 9 The motor housing a <b> 12 and the motor housing B <b> 13 have a stator 35 and are rotatably held.
[0015]
As shown in FIG. 2, the stator core 1 is formed by dividing an arcuate yoke portion 1 a that forms a magnetic path on the outer periphery into a plurality of laminated layers on an insulator 2 molded from a resin ( A segment core is configured by being sandwiched from above and below and integrated. The insulator 2 is formed by integrally molding an inner wall portion 3 and an outer wall portion 4 that prevent the stator winding 8 from collapsing with resin or the like, and prismatic convex portions 6 are provided at a plurality of locations on the outer wall portion 4. It is installed.
[0016]
Here, the convex portion 6 is in the shape of a prism, but it may be cylindrical, conical, or pyramidal.
[0017]
As shown in FIG. 3, the stator core 8 is wound around the segment core via an insulator 2 that electrically insulates the stator core 1 and the stator winding 8, and the start and end thereof are conductive. It is wound around pin 7.
[0018]
Further, as shown in FIG. 4, the stator core 8 wound around the segment core is formed by alternately arranging two main windings 8a and two auxiliary windings 8b in a concentrated manner. These are coupled together to form a stator 35. The conductive pin 7 provided on the columnar convex portion 5 of the inner wall 3 of the insulator 2 that holds and holds the start and end of each winding is one of the two insulators 2 around which the main winding 8a is wound. One of the two insulators 2 in which the main winding winding conductive pin 7a and the main winding winding end conductive pin 7b and the adjacent auxiliary winding are wound on the insulator 2 in the same manner. Only two auxiliary winding winding conductive pins 7c and auxiliary winding winding end conductive pins 7d are provided. A specific winding configuration is such that the first main winding 8a or the auxiliary winding 8b is wound from the conductive pin 7a for starting the main winding or the conductive pin 7c for starting the auxiliary winding. (Not shown) is wound to wind the second main winding 8a or the auxiliary winding 8b, and further the connecting wire is wound around the main winding end conductive pin 7b or the auxiliary winding end conductive pin 7d. It is a configuration to finish.
[0019]
As shown in FIG. 5, the terminal block body 15 includes a connector 29 having a plurality of terminals 24 connected to the stator winding 8 and a lead wire 31 that is one of external components on the outer periphery of the terminal block body 15. A connector connection terminal 21 that is an external component connection terminal to be connected to the capacitor, and a capacitor connection terminal 20 that connects a pair of tab-shaped terminals 26 of the capacitor element 25 to end faces other than the outer peripheral portion and the inner peripheral side, The thermal fuse 18 has an electrical attachment structure 15a, an electrical attachment structure 15b of the current fuse 19, and a pin engagement hole 22 for engaging the conductive pin 7, and is molded by a resin material or the like. Thus, it is formed in a semi-annular shape and has an opening 16. As shown in FIG. 7, the conductive plate 17 includes a connector connection terminal 21, a capacitor connection terminal 20, an electrical attachment structure 15 a for the thermal fuse 18, and an electrical attachment for the current fuse 19. The structure portion 15b and the pin engagement holes 22 for engaging the conductive pins 7 are electrically connected in some groups so as to be built in the terminal block body 15. The capacitor connection terminal 20 has a tab shape that is horizontally opened outward, and has elasticity between the lower surface of the terminal and the upper surface folded from both sides, and is a terminal of the capacitor 25 to be inserted. 26 is sandwiched. Further, an engaging portion 23 is provided on the lower surface of the terminal block main body 15, and the engaging portion 23 is configured to engage with the convex portion 6 of the insulator 2 as shown in FIG.
[0020]
Further, the diameter dimension of the outer peripheral portion of the terminal block body 15 is made smaller than the diameter dimension of the inner peripheral surfaces of the motor housing a12 and the motor housing B13, and the rotor 9 can be inserted in the direction of the axis 10 of the rotor 9. A semicircular opening 16 having a diameter is formed. Here, the shape of the terminal block main body 15 is a semi-annular shape, but the outer shape may be a fan shape or a polygonal shape. Any shape can be used as long as the space for mounting the temperature fuse 18 and the current fuse 19 can be secured. Furthermore, the shape of the opening 16 is not limited to a circular shape, and may be a U shape or a polygonal shape.
[0021]
As shown in FIG. 6, this terminal block main body 15 is placed above a stator 35 that is a combination of a plurality of stator cores 8 wound around the segment core of FIG. It is supported from below by the convex portion 6 of the insulator 2 and is held so as not to move in the circumferential direction and the radial direction by the engaging portion 23 on the lower surface of the terminal base body 15. And when the terminal 26 of the capacitor | condenser 25 is inserted in the capacitor | condenser connection terminal 20, the surface which has the terminal 26 of the capacitor | condenser 25 is located inside the outer peripheral surface of the axis | shaft 10 of a rotor.
[0022]
In addition, although the state which attached the current fuse 19 was demonstrated here, the current fuse 19 may be unnecessary depending on the use environment of an electric motor.
[0023]
As shown in FIG. 8, the capacitor 25 has a pair of tab-shaped terminals 26 at both ends, which are horizontally formed in a plate shape on the lower surface. When the capacitor 25 is attached to the terminal block body 15, the capacitor 25 is attached to the rotor shaft 10. On the other hand, the capacitor connection terminal 20 and the capacitor 25 are electrically connected and integrated by inserting the capacitor connection terminal 20 in a substantially right angle direction.
[0024]
The pair of terminals 26 are located below the capacitor 25 in the thickness direction. Here, the downward direction in the thickness direction means the side closer to the stator core 1 in the axial direction of the rotor 9.
[0025]
Further, both ends of the surface of the capacitor 25 opposite to the surface having the tab-shaped terminals 26 form an R portion 27 and have a shape along the outer peripheral surface of the stator 35. As shown in FIG. Can be used effectively.
[0026]
Here, the R portions 27 are formed at both ends of the capacitor 25, but there is no difference in the operation effect even in the chamfered shape.
[0027]
Further, the capacitor 25 is provided with a columnar convex portion 5 provided with a pore capable of press-fitting and holding the conductive pin 7 on the inner wall portion 3 of the insulator 2, and a claw portion 28 is provided on the lower surface of the capacitor 25. . As shown in FIG. 9, when the capacitor 25 is fixed to the terminal base body 15, the terminal 26 is inserted into the capacitor connection terminal 20 and the tip of the elastic guide portion 28 a on the terminal 26 side of the claw portion 28. However, it contacts the convex part 5 and deforms outward, advances toward the terminal block main body 15 along the outer periphery of the convex part 5, and the inner surface of the tip of the elastic guide part 28 a becomes the outer peripheral surface of the convex part 5. It engages with the claw portion 28 so as to hold it. Since the tip is directed inward, the capacitor 25 is prevented from moving to the side opposite to the terminal base body 15 and has an effect of preventing the terminal 26 from coming off.
[0028]
As shown in FIG. 10, the connector 29 connected to the connector connecting terminal 21 on the outer peripheral portion of the terminal block body 15 includes a case portion 32 surrounding the lead wire 31 and the terminal portion 30, and a longitudinal direction of the case portion 32. The flange 33 is formed by integrally molding with a resin or the like at approximately the center, and when the connector 29 is connected to the connector connection terminal 21 of the terminal block body 15 as shown in FIG. It abuts on the outer periphery of the connector insertion hole 14 provided in the housing B13.
[0029]
Further, as shown in FIG. 11, the lead wire 31 is surrounded on the lead wire outlet side of the case portion 32 of the connector 29, and the filling portion 34 is formed by filling the resin so as not to reach the terminal portion 30. The space between the parts 32 is filled. Further, the case portion 32 of the connector 29 is formed for each terminal portion 30, that is, separated into two, and is integrally held by the flange portion 33.
[0030]
The resin material forming the filling portion 34 may be the same as the resin material forming the case portion 32 or may be a different material. In short, it is sufficient if the gap between the case portion 32 and the charging portion of the lead wire 31 can be filled.
[0031]
When manufacturing this capacitor motor, the stator 35 in which the terminal block body 15 is attached to the coil end portion of the wound stator winding 8 via the insulator 2 is connected to the motor housing a12 from the opposite terminal block body side. After the rotor 9 having the bearing 11 attached thereto is inserted into the opening 16 of the terminal base body 15, the terminal 26 of the capacitor 25 is inserted into the capacitor connecting terminal 20 in a direction substantially perpendicular to the shaft 10 of the rotor. The motor housing B13 is held with the bearing 11 and the flanges are aligned with each other. The motor housing a13 is fixed to the motor housing a12 with screws or the like, and the connector 29 is inserted into the connector insertion hole 14 and connected to the connector connection terminal 21.
[0032]
As described above, according to the capacitor motor of the first embodiment of the present invention, the tab-shaped terminal 26 provided on the capacitor 25 is substantially perpendicular to the axis of the rotor 9 so as to match the capacitor connecting terminal 20. Since it is formed and is located closer to the coil end portion of the stator winding 8 in the axial direction, there is a margin in the necessary electrical insulation distance between the terminal 26 and the motor housing B13, that is, the spatial distance, and the motor housing B13. As a result, the axial dimension of the electric motor can be reduced.
[0033]
Further, the capacitor connection terminal 20 of the terminal base body 15 in which the opening 16 through which the rotor 9 can be inserted is formed so that the capacitor 25 is inserted in a direction substantially perpendicular to the shaft 10 of the rotor. Therefore, after assembling the rotor 9 through the opening 16 provided in the terminal block body 15 in the assembly process of the motor, if there is a minimum space in which the dimension of the capacitor 25 in the axial direction can be reduced, the capacitor 25 is connected to the terminal block. It can be attached to the main body 15. Further, since the capacitor 25 is inserted with the rotor shaft 10 interposed therebetween, restrictions on the shape and size of the capacitor 25 are alleviated, and the use range of the capacitor capacity can be expanded.
[0034]
Further, since the tab-shaped terminal 26 of the capacitor 25 is provided on the stator core side in the thickness direction of the capacitor 25, there is a margin in the necessary electrical insulation distance between the terminal 26 and the motor housing B13, that is, the spatial distance. The axial dimension of the motor housing B13 can be reduced, and the axial dimension of the electric motor can be reduced.
[0035]
Further, when the capacitor 25 is connected to the terminal block body 15, the surface having the terminal 26 of the capacitor 25 is positioned on the inner side of the outer peripheral surface of the rotor 9. Can be expanded in the outer circumferential direction and the inner circumferential direction, and the restriction of the usable capacitor can be relaxed.
[0036]
In addition, since the prismatic convex portion 6 provided on the outer wall portion 4 of the insulator 2 and the engaging portion 23 provided on the bottom surface of the terminal base body 15 are engaged with each other, the circumferential direction of the stator core 1 The terminal block body 15 can be easily positioned with respect to.
[0037]
Further, since the outer peripheral surface of the columnar convex portion 5 provided on the inner wall portion 3 of the insulator 2 and the claw portion 28 provided on the bottom surface of the capacitor 25 are engaged, the stator core 1 and the terminal block main body 15 are engaged. The capacitor 25 can be reliably positioned with respect to.
[0038]
Further, since the conductive pin 7 is provided on one insulator 2 around which the main winding 8a is wound and one insulator 2 around which the adjacent auxiliary winding 8b is wound, the terminal block attached via the conductive pin 7 is provided. Since the shape of the main body 15 is minimized, that is, it is only necessary to cover the two insulators 2, the area of the conductive plate 17 formed so as to electrically connect the terminals 24 and the resin material to be used are minimized. Can be.
[0039]
Further, since the flange portion 33 is formed integrally with the connector 29, the connector insertion hole 14 provided in the housing B14 can be covered without using other parts, and entry of dust and the like can be prevented.
[0040]
Further, since the filling portion 34 is formed by filling the lead wire side of the case portion 32 of the connector 29, it is possible to prevent intrusion of rain water or condensed water from the lead wire side.
[0041]
In addition, since the case portion 32 of the connector 29 is separated and molded for each terminal portion 30, the tracking resistance between the terminal portions 30 can be improved.
[0042]
Further, after the stator 35 is press-fitted into the motor housing a12, the rotor 9 to which the bearing 11 is attached is inserted into the opening 16 formed in the terminal base body 15, and then the terminal 26 of the capacitor 25 is inserted into the rotor. Since the assembly step of inserting into the capacitor connection terminal 20 from a direction substantially perpendicular to the shaft 10 is provided, the surface on the terminal 26 side of the capacitor 25 can be smoothly assembled without interfering with the bearing 11.
[0043]
(Embodiment 2)
As shown in FIG. 12, when the capacitor insertion hole 35 is provided on the outer surface of the motor housing B13 and the capacitor 25 is attached to the terminal block body 15 by being inserted into the capacitor insertion hole 36, the capacitor 25 protrudes from the motor housing B13. The configuration. Other components with the same reference numerals are the same as those in the first embodiment.
[0044]
When the capacitor 25 is attached to the terminal block body 15, the rotor 9 with the bearing 11 is installed in the motor housing a 12 in which the stator core 1 is press-fitted and the terminal block body 15 is placed above the stator winding 8. With the motor housing B13 placed and fixed to the motor housing a12, the terminal 26 of the capacitor 25 is inserted into the capacitor insertion hole 36 from the outside of the motor housing B13, and is inserted into the capacitor connection terminal 20. Become.
[0045]
Thus, according to the capacitor motor of the second embodiment of the present invention, the capacitor 25 can be inserted from the outside of the motor housing B13. Therefore, the capacitor can be attached without removing the motor housing B13, and the capacitor can be replaced or replaced. This makes it easier to manufacture different types of capacitors.
[0046]
【The invention's effect】
As is clear from the above embodiments, according to the present invention, an external component connection terminal connected to an external electrical component, a capacitor connection terminal connected to a capacitor terminal, and an insulator in the stator core A capacitor motor in which a terminal block body provided with a terminal connected to a stator winding wound through a stator is provided on the side opposite to the stator core of the stator winding via the insulator, the capacitor Since the connection terminal is formed so that the capacitor is inserted in a direction substantially perpendicular to the rotor shaft of the capacitor motor, the capacitor terminal is closer to the coil end portion of the stator winding in the axial direction. The axial dimension of the motor housing that secures the necessary electrical insulation distance, that is, the spatial distance from the capacitor terminal, can be reduced, and the axial dimension of the motor can be reduced. It is possible to provide a capacitor motor capable.
[0047]
In addition, it is connected to external component connection terminals connected to external electrical components, capacitor connection terminals connected to capacitor terminals, and stator windings wound around the stator core via an insulator. A capacitor base motor provided with a terminal block body formed with an opening through which a rotor can be inserted, on the side opposite to the stator core of the stator winding via the insulator. Since the capacitor terminal is formed so that the capacitor is inserted in a direction substantially perpendicular to the axis of the rotor, the rotor is inserted into the opening provided in the terminal block body and assembled in the motor assembly process. Later, if there is a minimum space between the inner surface of the motor housing, which is the outer shell of the motor, and the size of the capacitor in the axial direction of the rotor can be reduced, the capacitor can be mounted on the terminal block body. .
[0048]
In addition, since the capacitor terminal is arranged on the stator core side of the capacitor, there is a margin in the required electrical insulation distance between the terminal and the motor housing, and the axial dimension of the motor housing is reduced. The axial dimension of the electric motor can be reduced.
[0049]
In addition, since the surface with the capacitor terminals is located on the inner side of the outer peripheral surface of the rotor, it is possible to cope with the size and shape of large capacitors due to the increased capacity of the capacitors, and the restrictions on the capacitor capacity are eased. The range of use can be expanded.
[0050]
In addition, an inner wall portion and an outer wall portion that prevent the stator winding wound around the insulator from sagging are provided, and a convex portion is formed on the outer wall portion, and the lower surface of the terminal block body is engaged with the convex portion. Since the joint portion is provided, the terminal block body can be easily and reliably positioned with respect to the circumferential direction or the axial direction of the stator core, and the assembling accuracy can be improved.
[0051]
In addition, an inner wall portion and an outer wall portion that prevent the stator winding wound around the insulator from sagging, and a pore that press-fits and holds a conductive pin that holds the start and end of the stator winding around the inner wall portion. And a claw that engages the protrusion on the lower surface of the capacitor, so that it is easy to position the capacitor relative to the terminal block body and insulator when connecting the capacitor to the terminal block body Therefore, the assembling accuracy can be improved.
[0052]
In addition, the stator winding wound through the insulator is composed of at least two main windings and at least two auxiliary windings that are individually wound in a concentrated manner and alternately arranged. Conductive pins that are entangled and held at two locations on the inner wall of one insulator that winds the main winding and two locations on the inner wall of one insulator that also winds the adjacent auxiliary winding. Since the terminal block main body to be attached can be molded to the minimum, the resin for molding and the materials for the conductive terminals can be rationalized.
[0053]
Further, the connector connected to the external component connection terminal of the terminal block main body includes a case portion that internally connects the lead wire and the terminal portion, and when the connector is connected to the external component connection terminal, It consists of a flange that contacts the outer surface of the motor housing that forms the outer shell, and these are molded integrally with resin, etc., preventing the entry of dust etc. into the interior of the motor and improving the quality without using separate parts Can be achieved.
[0054]
In addition, since the resin is filled between the connector case and the lead wire charging part, a waterproof structure can be realized without adopting a complicated structure. Can be prevented and quality can be improved.
[0055]
In addition, since the connector case portion is divided and formed for each terminal portion, the tracking resistance between the terminal portions can be improved, and the quality can be improved.
[0056]
In addition, the stator with the terminal block body attached via an insulator is press-fitted and fitted to the motor housing that forms the outline of the capacitor motor from the opposite terminal block body side, and the rotor with the bearing attached is fitted to the terminal block body. After inserting the rotor into the opening through which the rotor can be inserted, there is an assembly process in which the capacitor terminal is inserted into the capacitor connection terminal in a direction substantially perpendicular to the rotor axis. When a capacitor having a large capacitor capacity that is enlarged toward the child shaft side is used, the assembly work can be performed without the capacitor hitting the bearing attached to the rotor.
[0057]
In addition, it is connected to external component connection terminals connected to external electrical components, capacitor connection terminals connected to capacitor terminals, and stator windings wound around the stator core via an insulator. In a capacitor motor provided with a terminal block body provided with a terminal on the side opposite to the stator core of the stator winding via the insulator, the capacitor connection terminal is connected to the rotor shaft of the capacitor. And the capacitor is configured to project from a capacitor insertion hole provided in a motor housing that forms an outline of the capacitor motor when the capacitor is inserted into the capacitor connection terminal. Therefore, the capacitor can be attached without removing the motor housing, and the replacement and post-assembly of the capacitor are facilitated.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a capacitor motor according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a segment core that is a stator core equipped with an insulator of the capacitor motor.
FIG. 3 is a perspective view showing a state where a stator winding is wound around a segment core of the capacitor motor.
FIG. 4 is a plan view showing a stator of the capacitor motor.
FIG. 5 is a plan view showing a terminal block body of the capacitor motor.
FIG. 6 is a cross-sectional view showing a state where the terminal block body of the capacitor motor is placed on the stator.
7 is a partially enlarged cross-sectional view of the capacitor motor taken along line aa in FIG.
FIG. 8 is a perspective view showing a capacitor of the capacitor motor.
FIG. 9 is a partially transparent plan view showing a mounting state of the capacitor case of the capacitor motor.
FIG. 10 is a perspective view showing a connector of the capacitor motor.
FIG. 11 is a sectional view showing a connector of the capacitor motor.
FIG. 12 is a side sectional view showing a capacitor motor according to a second embodiment of the present invention.
FIG. 13 is a side sectional view showing a conventional capacitor motor.
FIG. 14 is a plan view showing a printed circuit board of the capacitor motor.
[Explanation of symbols]
1 Stator core
2 Insulator
3 Inner wall
4 outer wall
5 Convex
6 Convex
7 Conductive pin
8 Stator winding
9 Rotor
10 Rotor shaft
11 Bearing
15 Terminal block body
16 opening
20 Capacitor connection terminal
21 Connector connection terminal (External component connection terminal)
23 Engagement part
24 terminals
25 capacitors
26 terminals
28 Claw
29 Connector
30 Terminal
32 Case part
33 Buttocks
34 Filling part
35 Stator
36 Capacitor insertion hole

Claims

Connected to external component connection terminals connected to external electrical components, two capacitor connection terminals connected to capacitor terminals, and stator windings wound around the stator core via insulators A terminal block main body provided with a terminal on the side opposite to the stator core of the stator winding via the insulator, and the terminal block main body and the stator connected to the capacitor in the housing In the capacitor motor that houses the child,
The capacitor connection terminal is inserted so that both of the capacitor terminals are inserted from the same direction, and the capacitor is inserted in a direction substantially perpendicular to the axis of the rotor of the capacitor motor. Capacitor motor formed on.

Connected to external component connection terminals connected to external electrical components, two capacitor connection terminals connected to capacitor terminals, and stator windings wound around the stator core via insulators A terminal block body having an opening through which a rotor can be inserted is provided on the side opposite to the stator core of the stator winding via the insulator, and the capacitor is connected in the housing In the capacitor motor housing the terminal block main body, the stator and the rotor, the capacitor connection terminals are such that both of the capacitor terminals are inserted from the same direction, and the capacitor is A capacitor motor formed so as to be inserted in a direction substantially perpendicular to the axis of the rotor.

The capacitor motor according to claim 1 or 2, wherein a terminal of the capacitor is arranged on the stator core side of the capacitor.

4. The capacitor motor according to claim 1, 2 or 3, wherein the location of the capacitor closest to the rotating shaft is positioned inside the outer peripheral surface of the rotor.

An inner wall portion and an outer wall portion that prevent the stator winding wound around the insulator from sagging, a convex portion is formed on the outer wall portion, and an engaging portion that engages with the convex portion on the lower surface of the terminal block body The capacitor | condenser motor in any one of Claims 1-4 which provided.

An inner wall and an outer wall are provided to prevent the stator winding wound around the insulator from sagging, and a fine hole is provided on the inner wall to press-fit and hold a conductive pin that holds and holds the start and end of the stator winding. The capacitor motor according to claim 1, wherein a convex portion is formed, and a claw portion that engages with the convex portion is provided on a lower surface of the capacitor.

A stator winding wound through an insulator is composed of at least two main windings and at least two auxiliary windings that are individually wound in a concentrated manner and arranged alternately so that the start and end of each winding are entangled. The conductive pins to be held are held only at two places on the inner wall of one insulator around which the main winding is wound and at two places on the inner wall of one insulator around which the adjacent auxiliary winding is wound. The capacitor | condenser motor in any one of Claims 1-4 set as the structure provided.

The connector connected to the external component connection terminal of the terminal block main body includes a case portion that internally connects the lead wire and the terminal portion, and the outer shape of the capacitor motor when the connector is connected to the external component connection terminal. The capacitor | condenser motor in any one of Claims 1-7 which consisted of the collar part contact | abutted to the outer surface of the motor housing made, and formed these integrally with resin etc.

The capacitor motor according to claim 8, wherein a resin is filled between a case portion of the connector and a charging portion of the lead wire.

The capacitor motor according to claim 8 or 9, wherein a case portion of the connector is divided and formed for each terminal portion.

The stator with the terminal block body attached via an insulator is press-fitted into the motor housing that forms the outer shell of the capacitor motor from the non-terminal block body side, and the rotor with the bearing attached is connected to the rotation of the terminal block body. 3. The method of manufacturing a capacitor motor according to claim 2, further comprising an assembly step of inserting the capacitor terminal into the capacitor connection terminal in a direction substantially perpendicular to the rotor axis after the insertion into the opening through which the child can be inserted.

Connected to external component connection terminals connected to external electrical components, two capacitor connection terminals connected to capacitor terminals, and stator windings wound around the stator core via insulators A terminal block body provided with a terminal on the side opposite to the stator core of the stator winding via the insulator, and the terminal block body, the stator and the rotor connected to the capacitor in a housing In the capacitor motor in which the capacitor is connected, the capacitor connection terminal is inserted so that both of the capacitor terminals are inserted from the same direction, and the capacitor is inserted in a direction substantially perpendicular to the rotor axis. When the capacitor is inserted into the capacitor connection terminal, the capacitor protrudes from a capacitor insertion hole provided in the motor housing that forms the outer shell of the capacitor motor. Configuration and the condenser motor to.