JP2832210B2 - Electromagnetic control spring clutch mechanism - Google Patents

Description

【発明の詳細な説明】 【０００１】 【発明の属する技術分野】本発明は、電磁制御ばねクラ
ッチ機構に関する。 【０００２】 【従来の技術】従来から、回転駆動される入力回転要素
の駆動力を選択的に伝達するために、コイルばねを利用
した電磁制御ばねクラッチ機構が使用されている。この
種の電磁制御ばねクラッチ機構としては、例えば特開昭
５９−１７５６３３号公報に開示さているものを掲げる
ことができ、かかる電磁制御ばねクラッチ機構は、入力
回転要素が固定された軸部材と、軸部材と一体に回転せ
しめられるロータと、ロータの片面側に配設されたアマ
チュアと、軸部材に回転自在に装着された支持部材と、
アマチュアと支持部材の間に配設された偏倚ばね部材
と、偏倚ばね部材の弾性偏倚作用に抗してアマチュアを
ロータの上記片面に磁気的に吸着せしめる電磁手段と、
一端が支持部材に連結されたコイルばね手段を備え、上
記コイルばね手段の収縮によって入力回転要素からの駆
動力を伝達する。 【０００３】 【発明が解決しようとする課題】而して、上述した通り
の電磁制御ばねクラッチ機構においては、支持部材を軸
部材に装着することに関連して支持部材と軸部材間には
若干の間隙が存在し、この若干の間隙によって電磁手段
の除勢時にアマチュアが軸部材に対して傾斜する傾向に
あり、この傾斜によりアマチュアとロータとの間に引き
ずり現象が生じ、このことに起因して応答性が低下する
という問題がある。 【０００４】本発明は上記事実に鑑みてなされたもので
あり、その主たる技術的課題は、電磁手段の除勢時にア
マチュアが軸部材に対して傾斜することによって生ずる
アマチュアとロータとの間に引きずり現象が発生するの
を防止して、応答性の優れた電磁制御ばねクラッチ機構
を提供することである。 【０００５】 【課題を解決するための手段】上記主たる技術的課題を
解決するために、本発明によれば、回転自在に装着され
た軸部材と、該軸部材に装着された入力回転要素と、該
軸部材と一体に回転せしめられるロータと、該ロータの
片面側に対向して位置するアマチュアと、該軸部材に対
して回転自在に装着された支持部材と、該支持部材と該
アマチュアの間に配設され該アマチュアを該ロータの該
片面から離隔する方向に弾性的に偏倚せしめる偏倚ばね
部材と、該ロータの他面側に配設され且つ付勢されると
該偏倚ばね部材の弾性偏倚作用に抗して該アマチュアを
該ロータの該片面に磁気的に吸着せしめる電磁手段と、
一端が該支持部材に連結されたコイルばね手段とを含
み、該コイルばね手段の収縮によって該入力回転要素か
らの駆動力を伝達する電磁制御ばねクラッチ機構におい
て； 該支持部材の該偏倚ばね部材に対向する一端面には周方
向に間隔を置いて複数個の突起が設けられ、該複数個の
突起の先端は該偏倚ばね部材及び該アマチュアを越えて
該ロータの該片面に接触乃至近接せしめられている、こ
とを特徴とする電磁制御ばねクラッチ機構が提供され
る。 【０００６】 【発明の実施の形態】以下、添付図面を参照して、本発
明に従って構成された電磁制御ばねクラッチ機構につい
て説明する。尚、図示の実施形態においては電磁制御ば
ねクラッチ機構を静電複写機のタイミングローラに適用
して説明するが、これに限定されることなく、その他種
々の要素の回転の制御に適用することができる。 【０００７】静電複写機のタイミングローラを示す図１
において、前後方向（図１において左右方向）に間隔を
置いて垂直前基板２と垂直後基板４が配設されている。
垂直前基板２及び垂直後基板４間には軸受部材６及び８
を介して支持軸１０（軸部材を構成する）が回転自在に
装着され、この支持軸１０の中間部にタイミングローラ
１２が装着されている。支持軸１０の一端は垂直前基板
２を貫通して幾分前方（巣１において左方）に突出し、
かかる前突出部の軸受部材６の外側部位には係止部材１
４が装着されている。また、支持軸１０の他端側は垂直
後基板４を貫通して後方（図１において右方）に突出
し、かかる後突出部の軸受部材８の外側部位には係止部
材１６が装着されている。そして、かかる支持軸１０の
後突出部に、全体を番号１８で示す電磁制御ばねクラッ
チ機構が配設されている。 【０００８】図１と共に図２を参照して電磁制御ばねク
ラッチ機構についてせつめいする。図示の電磁制御ばね
クラッチ機構１８は、入力回転要素、ロータ２２及びア
マチュア２４等を含むユニット組立体２６、並びに電磁
手段２８を備えている。図示の実施形態における電磁制
御ばねクラッチ機構１８は、後に詳述する如く、入力回
転要素、ユニット組立体２６及び電磁手段２８の組付順
序を変えることによって２種の形態、即ち支持軸１０の
後端部に形成された小径部１０ａにその一端側から他端
側（図１において左方から右方向）に向けて順次電磁手
段２８、ユニット組立体２６及び入力回転要素を配置し
た第１の形態（図１乃至図４に示す形態）と上記小径部
１０ａにその一端側から他端側に向けて順次入力回転要
素、ユニット組立体２６及び電磁手段２８を配置した第
２の形態（図６に示す形態）に使用することができる。 【０００９】次に、主として図２を参照して、上記電磁
制御ばねクラッチ機構１８の構成を説明する（従って、
上記第１の形態で使用している）。支持軸１０の小径部
１０ａの一端部に配置された電磁手段２８はフィールド
コア３０と、フィールドコア３０に装着された電磁コイ
ル３２を有し、フィールドコア３０がスリーブ部材３４
を介して小径部１０ａに回転自在に装着されている（図
１参照）。フィールドコア３０の外周面には係止部３６
が設けられ、係止部３６には切欠き３８が形成されてい
る。一方、垂直後基板４には、その一部を後方に折曲せ
しめることによって係止突起４０が設けられており、か
かる係止突起４０が上記係止部３６の切欠き３８に係止
されている（図１参照）。従って、電磁手段２８は、後
述する支持軸１０の回転によって回動されることがな
い。 【００１０】上記支持軸１０の小径部１０ａの他端部に
配置された、例えば歯車２０から構成することができる
入力回転要素は、上記小径部１０ａに回転自在に装着さ
れている。歯車２０の片面（図１及び図２において左
面）には環状のボス部４２が一体に設けられ、ボス部内
には円筒状の第１のボス部材４４が装着されている。図
示の実施形態においては、この第１のボス部材４４は、
歯車２０の側面に形成された貫通孔４６内にその端面に
設けられた突出部４８を挿入することによって歯車２０
と一体に回転するように装着されている。この第１のボ
ス部材４４は、後述する第２のボス部材に向けて前後方
向前方に延びている。尚、第１のボス部材４４は歯車２
０と一体に形成することも可能である。歯車２０は、図
示していないが、適宜の歯車機構等を介して電動モータ
の如き駆動源に駆動連結され、上記駆動源によって所定
方向に回転される。支持軸１０の小径部１０ａの歯車２
０の装着部位の外側（図１において右側）には、更に歯
車２０等が外れるのを防止するために、係止部材４９が
装着されている。 【００１１】また、図示の実施形態においては、上記支
持軸１０の小径部１０ａの中間部、即ち電磁手段２８と
歯車２０の間に配置されたユニット組立体２６は、ロー
タ２２、アマチュア２４、偏倚ばね部材５０、支持部材
５２及び第２のボス部材５４を含み、これらがユニット
化されて一個の組付要素を構成する。図３をも参照して
説明すると、第２のボス部材５４は、一端部（図１乃至
図３において左側）に設けられた小径部５６と、他端部
（図１乃至図３において右側）に設けられた大径部５８
と、その中間部に設けられた中径部６０とを有してい
る。第２のボス部材５４の小径部５６にはピン受部を規
定する一対の切欠き６２が形成されており、かかる切欠
き６２に支持軸１０の小径部１０ａにこれを貫通して形
成されたピン孔６４（図２参照）に装着されているピン
部材６６の両端部を係合せしめることによって第２のボ
ス部材５４が上記小径部１０ａにこれと一体に回転する
ように装着されている（図１及び図４参照）。図示の実
施形態においては、第２のボス部材５４の他端部にもピ
ン受部を規定する一対の凹部６８が形成されている。一
対の凹部６８は、後述する如く、図示の電磁制御ばねク
ラッチ機構１８を第２の形態、即ち図６に示す形態で使
用する場合に利用され、かかる場合には一対の凹部６８
内に、ピン孔６４に装着されたピン部材６６の両端部が
係合される。それ故に、第１の形態（図１乃至図４）の
みで使用する場合には凹部６８を省略することができ、
また第２の形態（図６）のみで使用する場合には切欠き
６２を省略することができる。 【００１２】図示の実施形態においては、上記のロータ
２２は、環状基板７０と、環状基板７０の外側に位置す
る環状部７２と、環状基板７０と環状部７２を接続する
接続部７４を有する環状板から構成されている。かかる
ロータ２２は、環状基板７０を第２のボス部材５４の小
径部５６に圧入することによってその一端に固定され、
第２のボス部材５４、従って支持軸１０と一体に回転さ
れる。具体例では、ロータ２２が第２のボス部材５４の
小径部５６に固定されることに関連して、ロータ２２の
環状基板７０の内周縁にも、一対の凹部７６が形成され
ている。ロータ２２に形成された凹部７６は、上記第２
のボス部材５４に形成された切欠き６２と協働してピン
受部を規定し、第４図に示す如く、小径部１０ａに装着
されたピン部材６６の両端部は上記切欠き６２及び上記
凹部７６に係合される（従って、ロータ２２を第２のボ
ス部材５４の小径部５６に固定する際には、ロータ２２
の凹部７６と小径部５６の切欠き６２を整合させて圧入
する）。かく構成することによって、ロータ２２と第２
のボス部材５４の小径部５６の圧入状態が比較的弱い場
合においても、ロータ２２はピン部材６６を介して支持
軸１０と一体に確実に回転される。 【００１３】また、上記支持部材５２は短筒状の部材か
ら構成され、第２のボス部材５４の中径部６０に回転自
在に装着されている。支持部材５２の一端面（図１乃至
図３において左面）内周縁には、環状フランジ７７が設
けられている。この支持部材５２は軽量のプラスチック
から形成するのが好ましい。また、上記ロータ２２の片
面（図１乃至図３において右面）側に対向して位置する
アマチュア２４は、ロータの環状部７２の外径と略同一
の外径を有する環状板から構成され、偏倚ばね部材５０
を介して上記支持部材５２に装着されている。更に説明
すると、偏倚ばね部材５０は支持部材５２の環状フラン
ジ７７に装着され、その環状中央部７８が支持部材５２
の一端面に後述する如く固定されている。図示の偏倚ば
ね部材５０は環状中央部７８から外側に鎌状に延びる複
数個（図示の実施形態においては３個）の突出部８０を
有し、複数個の突出部８０の各々の自由端部がアマチュ
ア２４の片面（ロータ２２と対向する面とは反対の面）
にリベットの如き固定部材８４により固定されている。
偏倚ばね部材５０はアマチュア２４をロータ２２の片面
から離隔する方向に弾性的に偏倚せしめる作用する。図
示の実施形態においては、偏倚ばね部材５０は次の通り
にして支持部材５２に固定されている。図示のユニット
組立体２６は、更に、プレート状のばね固定部材を含ん
でいる。図示のばね固定部材は偏倚ばね部材５０の環状
中央部７８の形状に略対応した環状のプレート部材８６
から構成されている。このプレート部材８６の周縁部に
は、その一部を折曲せしめることによって周方向に間隔
を置いて複数個（図示の実施形態においては３個）の係
止突部８８が設けられている。一方、偏倚ばね部材５０
の環状中央部７８には上記係止突部８８の各々に対応し
て複数個（図示の実施形態においては３個）の挿通孔９
０が形成され、更に支持部材５２には上記挿通孔９０の
各々に対応して貫通孔９２が形成されている。従って、
支持部材５２の環状フランジ７７に偏倚ばね部材５０及
びプレート部材８６を装着すると、プレート部材８６の
各係止突部８８は対応する偏倚ばね部材５０の挿通孔９
０及び支持部材５２の貫通孔９２を通して支持部材５２
の他側に突出するようになり（図５に実線で示す如く突
出される）、かかる係止突部８８の突出端を所要の通り
変形せしめて支持部材５２の他端部に係止せしめること
によって、偏倚ばね部材５０の環状中央部７８はプレー
ト部材８６と支持部材５２間に固定される。 【００１４】図示の実施形態によるユニット組立体２６
においては、更に、支持部材５２の一端面に周方向に間
隔を置いて複数個の突起９４が設けられ、また偏倚ばね
部材５０の環状中央部７８には上記突起９４に対応して
周方向に間隔を置いて突起受部を規定する複数個の開口
９６が形成されている。各突起９４の先端側は偏倚ばね
部材５０の開口９６を貫通し、プレート部材８６及びア
マチュア２４を越えてロータ２２の片面側に延び、その
先端はロータ２２の片面に接触乃至近接せしめられてい
る（図４参照）。図示の実施形態においては、突起９４
が上述した如く延びていることに関連して、プレート部
材８６の周縁部には上記開口９６に対応して円弧状の切
欠き９８が形成されている。かくの通りであるので、各
突起９４は開口９６及び切欠き９８に受入られ、支持部
材５２と偏倚ばね部材５０間において駆動力を伝達する
作用をする（言い換えると、支持部材５２と偏倚ばね部
材５０間に生ずるアジアル荷重、即ち回転方向の荷重を
受ける作用をする）と共に、後述する如くクラッチ機構
１８の応答性を向上させる作用をする。クラッチ機構１
８の応答性を一層向上させるには、具体例に示す如く、
支持部材５２の環状フランジ７７の先端側も偏倚ばね部
材５０及びプレート部材８６を越えて突出させ、その先
端をロータ２２の片面に接触乃至近接せしめるのが好ま
しく、図示の実施形態においては、突起９４の先端面及
び環状フランジ７７の先端面がロータ２２の片面に実質
上平行である実質上同一平面を規定するように構成され
ている（図４参照）。 【００１５】入力回転要素としての歯車２０に装着され
た第１のボス部材４４とユニット組立体２６の第２のボ
ス部材５４の他端部、即ち大径部５８にはコイルばね手
段１００が被嵌されている。図１及び図２に示すよう
に、ユニット組立体２６の第２のボス部材５４の大径部
５８は上記第１のボス部材４４に向けて延び、両ボス部
材４４及び５４の端面は相互に接触乃至近接せしめられ
ている。この第２のボス部材５４の大径部５８の外径と
第１のボス部材４４の外径とは実質上等しく、コイルば
ね手段１００は上記第２のボス部材５４の大径部５８と
第１のボス部材４４の両者に跨って被嵌されている。図
示の実施形態においては、コイルばね手段１００は図１
及び図２において左側から見て右巻（従って、歯車２０
が矢印１０２で示す方向に回転されているときに、支持
部材５２にその回動を阻止する力が作用して支持部材５
２が歯車２０に対して相対的に回転せしめられると収縮
される方向）に捲回されている。かかるコイルばね手段
１００の一端１００ａは支持部材５２の他端部に形成さ
れた切欠き１０４（図の実施形態では、周方向に間隔を
置いて複数個形成された切欠き１０４のいずれか）に挿
入されることによってこれに連結され、その他端１００
ｂは、歯車２０の環状ボス部４２に形成された切欠き１
０６（図の実施形態では、周方向に間隔を置いて４個形
成された切欠き１０６のいずれか）に挿入されることに
よってこれに連結されている。 【００１６】上記クラッチ機構１８は、上述した記載か
ら容易に理解される如く、実質上４個の組付要素、即ち
電磁手段２８、ユニット組立体２６、コイルばね手段１
００及び歯車２０から構成される。そして、これらを次
の通りに支持軸１０の小径部１０ａに装着することによ
って第１の形態として使用することができる。即ち、第
１の形態として使用する場合には、図１から理解される
如く、まず電磁手段２８を装着し、次いで小径部１０ａ
のピン孔６４にピン部材６６を装着し（ピン部材６６の
長さは小径部１０ａの径より幾分長くなっており、従っ
て所要の通り装着すると図４に示す通りその両端部は小
径部１０ａから突出する）、更にユニット組立体２６を
装着して第２のボス部材５４の切欠き６２及びロータ２
２の凹部７６によって規定されるピン受部に上記ピン部
材６６の両端部を係合せしめる。次に、コイルばね手段
１００の一端側を第２のボス部材５４の大径部５８に被
嵌し、その一端１００ａを支持部材５２の切欠き１０４
に挿入する。次いで、歯車２０を装着し、コイルばね手
段１００の他端側内径部に歯車２０に装着されている第
１のボス部材４４を位置せしめ、その他端１００ｂを歯
車２０の環状ボス部４２に形成された切欠き１０６に挿
入し、しかる後に、係止部材４９を小径部１０ａの他端
（図１において右端）に係止する。かくして、図１に示
す通りに支持軸１０の小径部１０ａに所要の通りに組付
けられ、組付要素が少ないことに関連して組付工数が少
なくなり、容易且つ迅速に組付けることができる。かか
る第１の形態においては、ロータ２２の他側に電磁手段
２８の電磁コイル３２が配置され、電磁手段２８は係止
突起４０によりその回転が阻止される。また、第２のボ
ス部材５４及びロータ２２はピン部材６６を介して支持
軸１０と一体に回転し、支持部材５２並びにこれに装着
されたアマチュア２４、偏倚ばね部材５０及びプレート
部材８６は第２のボス部材５４、従って支持軸１０に対
して回転自在であり、更に歯車２０及びこれに装着され
た第１のボス部材４４は支持軸１０に対して回転自在で
ある。 【００１７】図示の実施形態においては、プレート部材
８６の係止突部８８の突出端を変形せしめることによっ
て支持部材５２の他端部に係止せしめているが、かかる
係止は、図示の実施形態のように次の通りにするのが好
ましい。即ち、図５に示す如く、支持部材５２の各貫通
孔９２の右端部（図１乃至図３及び図５において右端
部）を右方に向けて拡張せしめ、貫通孔９２の拡張部９
２ａ内に係止突部８８の変形部を収容せしめるようにす
るのが好ましく、かくすることによって、支持部材５
２、偏倚ばね部材５０及びプレート部材８６から成る組
立要素を小型化することができる。尚、図示の実施形態
のように貫通孔９２に拡張部９２ａを設けた場合には、
係止突部８８を変形せしめるためのポンチの如き加圧工
具１０８の先端を凹状にし、その先端面１１０が弧状面
を規定するようにするのが望ましい。かくすることによ
り、図５に実線で示す如く突出せしめられている係止突
部８８の突出部を加圧工具１０８の作用によって図５に
一点鎖線で示す如く所要の通り変形せしめてその変形部
を貫通孔９２の拡張部９２ａに確実に係止せしめること
ができる。 【００１８】次に、主として図１を参照して、上述した
クラッチ機構１８を第１の形態で使用した場合の作用効
果について説明する。まず、電磁コイル３２に電流が供
給された場合について説明すると、電磁手段２８が付勢
されると、電磁手段２８の磁気的吸引力によってアマチ
ュア２４が偏倚ばね部材５０の弾性偏倚作用に抗して図
１において左方に移動し、ロータ２２の片面に磁気的に
吸着せしめられて、アマチュア２４とロータ２２とが接
続状態になる。歯車２０は矢印１０２（図２参照）で示
す方向に回転され、コイルばね手段１００を介して支持
部材５２も同じ方向に回転されており（支持部材５２と
一体に偏倚ばね部材５０及びアマチュア２４も回転され
ている）、従って、アマチュア２４とロータ２２が磁気
的に吸着されて接続状態になると、支持軸１０が停止し
ていることに起因して支持部材５２にその回動を阻止す
る力が作用する。かくすると、かかる回動阻止力によっ
て歯車２０と支持部材５２間に相対的速度差が生じ、か
かる速度差に起因してコイルばね手段１００が収縮され
る。かくすると、コイルばね手段１００を介して第１の
ボス部材４４と第２のボス部材５４とが接続され、支持
軸１０はピン部材６６、第２のボス部材５４、コイルば
ね手段１００及び第１のボス部材４４を介して歯車２０
に駆動連結される。かくして、歯車２０の回動力は支持
軸１０に伝達され、支持軸１０、従ってこれに装着され
たタイミングローラ１２は歯車２０の矢印１０２（図２
参照）に示す方向の回転に付随して回転せしめられ、複
写紙を所要の通り搬送する。 【００１９】次に、電磁コイル３２への電流の供給が停
止された場合について説明すると、電磁手段２８が除勢
されると、偏倚ばね部材５０の弾性偏倚作用によってア
マチュア２４が図１において右方に移動してロータ２２
の片面から離れ、アマチュア２４とロータ２２との上記
接続状態が解除される（即ち、アマチュア２４は偏倚ば
ね部材５０の作用によって図１に示す位置に復帰す
る）。このアマチュア２４の復帰時には、支持部材５２
とアマチュア２４間に介在されている偏倚ばね部材５０
の弾性偏倚作用によってロータ２２の片面から離隔する
方向に移動されるため、アマチュア２４とロータ２２の
接続が迅速に解除される。また、この復帰時には第２の
ボス部材５４の中径部６０の外径と支持部材５２の内径
間に存在する間隙に起因してアマチュア２４が支持軸１
０に対して幾分傾斜する傾向にあるが、具体例において
は支持部材５２の一端面に設けられた突起９４がロータ
２２の片面に接触乃至近接せしめられている故に、図４
から容易に理解される如く、アマチュア２４が若干傾動
した際には支持部材５２の突起９４の前端面がロータ２
２の片面に接触するようになり、復帰時にアマチュア２
４がロータ２２の片面に接触することによる引きずり現
象が防止され、アマチュア２４がロータ２２の片面に接
触することによる応答性の低下が効果的に防止される。
更に、図示の実施形態においては、支持部材５２の環状
フランジ７７の先端もロータ２２の片面に接触乃至近接
されている故に、支持部材５２自体の所謂ガタも少なく
することができ、応答性の低下が一層防止される。アマ
チュア２４とロータ２２の接続状態が解除されると、上
述した駆動伝達時に蓄えられたコイルばね手段１００の
弾性力によって支持部材５２が矢印１０２で示す方向に
更に若干回動され、コイルばね手段１００は拡張され
る。コイルばね手段１００の拡張の際には、支持部材５
２が第２のボス部材５４に回転自在に装着され、かかる
支持部材５２には偏倚ばね部材５０、アマチュア２４及
びプレート部材８６が装着されているのみであるため、
支持部材５２は大きい抵抗を受けることなくコイルばね
手段１００の弾性力によって容易且つ迅速に所要の通り
回転される。かくの如くコイルばね手段１００が拡張す
ると、第１のボス部材４４と第２のボス部材５４とのコ
イルばね手段１００による接続が解除され、かくして歯
車２０と支持軸１０の駆動連結が解除される。かかる電
磁手段２８の除勢時においては、容易に理解される如
く、歯車２０の回転に付随してコイルばね手段１００を
介して支持部材５２、偏倚ばね部材５０及びアマチュア
２４が回転するのみであり、支持軸１０、従ってタイミ
ングローラ１２は回転することはない。 【００２０】図示の実施形態のクラッチ機構１８におい
ては、更に、ロータ２２、アマチュア２４、偏倚ばね部
材５０、支持部材５２及び第２のボス部材５４をユニッ
ト化している故に、従来に比して組付要素を著しく少な
くすることができ、特に重要であるロータ２２とアマチ
ュア２４の間隔をも一定に保持することができる。ま
た、アマチュア２４が偏倚ばね部材５０を介してプレー
ト部材８６によって支持部材５２の一端面に固定される
故に、プレート部材８６が偏倚ばね部材５０の環状中央
部７８のほぼ全域に実質上均一に、かかる環状中央部７
８をプレート部材８６と支持部材５２間に確実に固定す
ることができると共に偏倚ばね部材５０、支持部材５２
及びプレート部材８６から成る組立要素を小型化するこ
ともできる。更に、かくすることによって、支持部材５
２への固定に伴うアマチュア２４の変形も防止すること
ができ、このことに起因して応答性も向上する。 【００２１】上述した通りの電磁制御ばねクラッチ機構
１８は、電磁手段２８、ユニット組立体２６、コイルば
ね手段１００及び歯車２０を次の通りに支持軸１０の小
径部１０ａに装着することによって図６に示す第２の形
態として使用することができる。即ち、第２の形態とし
て使用する場合には、図６から理解される如く、先ず歯
車２０を装着し（かかる歯車２０の装着は、それに装着
された第１のボス部材４４が他端側、即ち図６において
右側に延びるように行う）、次いで小径部１０ａのピン
孔６４にピン部材６６を装着する。次に、コイルばね手
段１００の他端側を歯車２０に装着されている第１のボ
ス部材４４に被嵌し、その他端１００ｂを歯車２０の環
状ボス部４２に形成された切欠き１０６に挿入する。し
かる後に、ユニット組立体２６を装着し（かかるユニッ
ト組立体２６の装着は、第２のボス部材５４が第１ボス
部材４４に対向するように、即ち、ロータ２２が他側と
なるように行う）、コイルばね手段１００の一端側内径
部内にユニット組立体２６の第２のボス部材５４の大径
部５８を位置せしめ、第２のボス部材５４の凹部６８に
よって規定されるピン受部にピン部材６６の両端部を係
合せしめ、更にコイルばね手段１００の一端１００ａを
ユニット組立体２６の支持部材５２に形成された切欠き
１０４に挿入する。次いで、電磁手段２８を所要の通り
装着し（かかる電磁手段２８は、第１の形態と同様に、
フィールドコア３０に設けられた係止部３６の切欠き３
８に垂直後基板４に設けられた係止突起４０が係止され
る）、更に係止部材４９を小径部１０ａの他端に係止す
る。かくして、図６に示す通りに支持軸１０の小径部１
０ａに所要の通り組付けられる。 【００２２】上述した第２の形態においても、第１の形
態と同様にロータ２２の他側に電磁手段２８の電磁コイ
ル３２が配置され、電磁手段２８は係止突起４０により
その回転が阻止される。また、第２のボス部材５４及び
ロータ２２はピン部材６６を介して支持軸１０と一体に
回転し、支持部材５２並びにこれに装着されたアマチュ
ア２４、偏倚ばね部材５０及びプレート部材８６は第２
のボス部材５４、従って支持軸１０に対して回転自在で
あり、更に歯車２０及びこれに装着された第１のボス部
材４４は支持軸１０に対して回転自在である。そして、
上記第２の形態においては、図１と図６とを比較するこ
とによって容易に理解される如く、歯車２０の装着位置
は、第１の形態で使用したときよりも垂直後基板４側に
所定量接近する（即ち、歯車２０の装着位置は支持軸１
０の小径部１０ａの一端部になる）。 【００２３】上述した第２の形態で使用した場合にも第
１の形態で使用した場合と実質上同様の効果が達成され
る。即ち、電磁手段２８が付勢されると、上述した如く
してコイルばね手段１００が収縮され、第１のボス部材
４４と第２のボス部材５４がコイルばね手段１００を介
して接続され、かくして歯車２０からの回動力は第１の
ボス部材４４、コイルばね手段１００、第２のボス部材
５４及びピン部材６６を介して支持軸１０に伝達され
る。他方、電磁手段２８が除勢されると、収縮していた
コイルばね手段１００が上述した如く拡張され、第１の
ボス部材４４と第２のボス部材５４のコイルばね手段１
００による接続が解除され、かくして歯車２０と支持軸
１０の駆動連結が解除される。そして、除勢時において
は、歯車２０の回転に付随してコイルばね手段１００を
介して支持部材５２、偏倚ばね部材５０及びアマチュア
２２が回転するのみであり、支持軸１０は回転すること
はない。このように、図示の実施形態における電磁制御
ばねクラッチ機構においては、比較的簡単な構成でしか
も組付順序を変えるのみで２種の形態に使用することが
でき、設計変更することなく広範囲に渡って用いること
ができる。 【００２４】以上、本発明による電磁制御ばねクラッチ
機構を図示の実施形態に基づいて説明したが、本発明は
かかる実施形態のみに限定されるものではなく、本発明
の範囲を逸脱することなく種々の変形乃至修正が可能で
ある。 【００２５】 【発明の効果】本発明による電磁制御ばねクラッチ機構
は以上のように構成され、軸部材に対して回転自在に装
着された支持部材の偏倚ばね部材に対向する一端面には
周方向に間隔を置いて複数個の突起が設けられ、該複数
個の突起の先端は偏倚ばね部材及びアマチュアを越えて
ロータの片面に接触乃至近接せしめられているので、軸
部材と支持部材の内径間に存在する間隙に起因して電磁
手段の除勢時にアマチュアが支持軸に対して傾斜する傾
向しようとすると、支持部材の一端面に設けられた突起
がロータの片面に接触して、アマチュアがロータの片面
に接触することによる引きずり現象が防止される。従っ
て、アマチュアがロータの片面に接触することによる応
答性の低下が効果的に防止される。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically controlled spring
Switch mechanism. 2. Description of the Related Art Conventionally, an input rotary element driven to rotate.
Utilizes a coil spring to selectively transmit the driving force of
An electromagnetically controlled spring clutch mechanism is used. this
As a kind of electromagnetically controlled spring clutch mechanism, for example,
No. 59-175633 are disclosed.
Such an electromagnetic control spring clutch mechanism can be
A shaft member with a rotating element fixed and a shaft member
The rotor to be tightened and the arm provided on one side of the rotor
A tua, a support member rotatably mounted on the shaft member,
A biasing spring member disposed between the amateur and the support member
The armature against the elastic biasing action of the biasing spring member.
Electromagnetic means for magnetically attracting to the one side of the rotor,
A coil spring means having one end connected to the support member;
The drive from the input rotary element is caused by the contraction of the coil spring means.
Transmit power. [0003] Accordingly, as described above,
In the electromagnetically controlled spring clutch mechanism of
In relation to mounting on the member, between the support member and the shaft member
There are some gaps, which can cause electromagnetic
Armature tends to tilt with respect to shaft member when de-energizing
This inclination causes a pull between the armature and the rotor.
A shear phenomenon occurs, resulting in poor responsiveness
There is a problem. [0004] The present invention has been made in view of the above facts.
The main technical issue is that
It is caused by the armature being inclined with respect to the shaft member.
Dragging between amateur and rotor
Electromagnetic control spring clutch mechanism with excellent response by preventing
It is to provide. [0005] The above-mentioned main technical problems are solved.
To solve, according to the present invention, it is mounted rotatably
A shaft member, an input rotating element mounted on the shaft member,
A rotor that is rotated integrally with the shaft member, and
An armature facing one side and a shaft member
A support member rotatably mounted and the support member and the support member.
The amateur is located between amateurs and the amateur is
A biasing spring that elastically biases in a direction away from one side
When the member and the other surface of the rotor are disposed and urged,
The armature is biased against the elastic biasing action of the biasing spring member.
Electromagnetic means for magnetically attracting the one surface of the rotor,
A coil spring means connected at one end to the support member.
Only the input rotary element by the contraction of the coil spring means.
The electromagnetically controlled spring clutch mechanism that transmits the driving force
A circumferential end face of the support member facing the biasing spring member;
A plurality of protrusions are provided at intervals in the direction,
The tip of the projection extends beyond the biasing spring member and the armature.
A contact or close contact with the one side of the rotor;
An electromagnetically controlled spring clutch mechanism is provided.
You. BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The electromagnetically controlled spring clutch mechanism constructed in accordance with
Will be explained. In the illustrated embodiment, the electromagnetic control
Spray clutch mechanism applied to timing roller of electrostatic copying machine
However, without being limited to this, other species
It can be applied to controlling the rotation of various elements. FIG. 1 shows a timing roller of an electrostatic copying machine.
, The interval in the front-back direction (left-right direction in FIG. 1)
A vertical front substrate 2 and a vertical rear substrate 4 are disposed.
Bearing members 6 and 8 are provided between the vertical front substrate 2 and the vertical rear substrate 4.
The support shaft 10 (constituting the shaft member) is rotatable via
A timing roller is mounted on the intermediate portion of the support shaft 10.
12 are mounted. One end of the support shaft 10 is a vertical front substrate
Projecting slightly forward (left in nest 1) through 2;
The locking member 1 is provided on the outside of the bearing member 6 at the front protruding portion.
4 is attached. The other end of the support shaft 10 is vertical
Projects rearward (rightward in FIG. 1) through rear substrate 4
A locking portion is provided at an outer portion of the rear protruding portion of the bearing member 8.
Material 16 is mounted. And of the support shaft 10
At the rear protruding part, an electromagnetic control spring
H mechanism is provided. Referring to FIG. 2 together with FIG.
We will discuss the latch mechanism. Electromagnetic control spring shown
The clutch mechanism 18 includes an input rotating element, a rotor 22 and an
A unit assembly 26 including a mature 24,
Means 28 are provided. Electromagnetic control in the illustrated embodiment
The spring clutch mechanism 18 has an input circuit as described in detail later.
Assembly order of the switching element, the unit assembly 26 and the electromagnetic means 28
By changing the order, two forms, namely the support shaft 10
The small-diameter portion 10a formed at the rear end portion has one end side to the other end.
Electromagnetic hand in order from the side (from left to right in FIG. 1)
Arrange the step 28, the unit assembly 26 and the input rotary element
1st form (the form shown in FIGS. 1 to 4) and the small diameter portion
Input rotation is required sequentially from one end side to the other end side of 10a.
Element, unit assembly 26 and electromagnetic means 28
The second embodiment (the embodiment shown in FIG. 6) can be used. Next, referring mainly to FIG.
The configuration of the control spring clutch mechanism 18 will be described (accordingly,
Used in the first embodiment). Small diameter part of support shaft 10
Electromagnetic means 28 arranged at one end of 10a
A core 30 and an electromagnetic coil mounted on the field core 30
The field core 30 has a sleeve member 34.
Is rotatably mounted on the small diameter portion 10a via the
1). An engaging portion 36 is provided on the outer peripheral surface of the field core 30.
And a notch 38 is formed in the locking portion 36.
You. On the other hand, part of the vertical rear substrate 4 is bent backward.
The locking projection 40 is provided by tightening,
The locking projection 40 is locked in the notch 38 of the locking portion 36.
(See FIG. 1). Therefore, the electromagnetic means 28 is
It is not rotated by the rotation of the support shaft 10 described above.
No. At the other end of the small diameter portion 10a of the support shaft 10,
Can be arranged, for example a gear 20
The input rotation element is rotatably mounted on the small diameter portion 10a.
Have been. One side of the gear 20 (the left side in FIGS. 1 and 2)
Surface) is provided with an annular boss portion 42 integrally therewith.
Is mounted with a first boss member 44 having a cylindrical shape. Figure
In the illustrated embodiment, this first boss member 44
In the through hole 46 formed in the side surface of the gear 20,
The gear 20 is inserted by inserting the projection 48 provided.
It is mounted so that it rotates together with it. This first button
The front member 44 moves forward and rearward toward a second boss member described later.
It extends forward. Note that the first boss member 44 is the gear 2
It is also possible to form them integrally with 0. Gear 20
Although not shown, the electric motor is connected via an appropriate gear mechanism or the like.
Is connected to a driving source such as
Rotated in the direction. Gear 2 of small diameter portion 10a of support shaft 10
0 (the right side in FIG. 1),
In order to prevent the car 20 or the like from coming off, the locking member 49
It is installed. In the illustrated embodiment, the support
An intermediate portion of the small diameter portion 10a of the shaft 10, that is,
The unit assembly 26 disposed between the gears 20
22, amateur 24, biasing spring member 50, support member
52 and a second boss member 54,
Into one assembly element. See also FIG.
To explain, the second boss member 54 has one end (FIGS.
A small-diameter portion 56 provided on the left side in FIG.
(Right side in FIGS. 1 to 3)
And a middle diameter portion 60 provided at an intermediate portion thereof.
You. The small diameter portion 56 of the second boss member 54 has a pin receiving portion.
A pair of notches 62 are formed, and the notches 62
62, the small diameter portion 10a of the support shaft 10
Pin mounted in the formed pin hole 64 (see FIG. 2)
The second button is formed by engaging both ends of the member 66.
The member 54 rotates integrally with the small diameter portion 10a.
(See FIGS. 1 and 4). Illustrated fruit
In the embodiment, the other end of the second boss member 54 is also pinned.
A pair of recesses 68 are formed to define the receiving portion. one
As will be described later, the pair of concave portions 68
The latch mechanism 18 is used in the second mode, that is, the mode shown in FIG.
And a pair of recesses 68 in such a case.
Inside, both ends of the pin member 66 attached to the pin hole 64
Engaged. Therefore, the first embodiment (FIGS. 1 to 4)
When using only the concave portion 68 can be omitted,
Notch when used only in the second mode (FIG. 6)
62 can be omitted. In the illustrated embodiment, the above rotor
Reference numeral 22 denotes an annular substrate 70, which is located outside the annular substrate 70.
The annular portion 72 is connected to the annular substrate 70 and the annular portion 72.
It is composed of an annular plate having a connecting portion 74. Take
The rotor 22 applies the annular substrate 70 to the second boss member 54
It is fixed to one end by press fitting into the diameter portion 56,
The second boss member 54, and therefore, is rotated integrally with the support shaft 10.
It is. In a specific example, the rotor 22 is connected to the second boss member 54.
In connection with being fixed to the small diameter portion 56, the rotor 22
A pair of recesses 76 are also formed on the inner peripheral edge of the annular substrate 70.
ing. The concave portion 76 formed in the rotor 22 is
Cooperate with a notch 62 formed in the boss member 54 of the
The receiving part is defined and attached to the small diameter part 10a as shown in FIG.
The both ends of the pin member 66 are formed with the notch 62 and the
The rotor 22 is engaged with the recess 76 (therefore, the rotor 22 is
When fixing to the small diameter portion 56 of the rotor member 54, the rotor 22
The concave portion 76 of the small diameter portion 56 and the concave portion 76 of the
Do). With this configuration, the rotor 22 and the second
When the press-fit state of the small diameter portion 56 of the boss member 54 is relatively weak.
Even in this case, the rotor 22 is supported via the pin member 66.
It is reliably rotated integrally with the shaft 10. The supporting member 52 is a short cylindrical member.
The second boss member 54 is provided with a rotation
It is currently installed. One end surface of the support member 52 (FIGS. 1 to
An annular flange 77 is provided on the inner peripheral edge in FIG.
Have been killed. This support member 52 is made of lightweight plastic
It is preferred to form from. Also, a piece of the rotor 22
Surface (the right side in FIGS. 1 to 3).
The amateur 24 is approximately the same as the outer diameter of the annular portion 72 of the rotor.
The biasing spring member 50 is constituted by an annular plate having an outer diameter of
Is attached to the support member 52 via the. Further explanation
Then, the biasing spring member 50 becomes the annular flange of the support member 52.
The annular central portion 78 is attached to the support member 52.
Is fixed to one end face of the as described later. The bias shown
The spring member 50 is a double sickle extending outward from the annular central portion 78.
Several (three in the illustrated embodiment) projections 80
The free end of each of the plurality of protrusions 80 is
One surface of the a 24 (the surface opposite to the surface facing the rotor 22)
Is fixed by a fixing member 84 such as a rivet.
The biasing spring member 50 connects the armature 24 to one side of the rotor 22.
Acts to resiliently bias in the direction away from the Figure
In the embodiment shown, the biasing spring member 50 is as follows.
And is fixed to the support member 52. Unit shown
The assembly 26 further includes a plate-shaped spring fixing member.
In. The illustrated spring fixing member is an annular spring member 50.
An annular plate member 86 substantially corresponding to the shape of the central portion 78
It is composed of On the periphery of this plate member 86
Is spaced in the circumferential direction by bending a part of it
And a plurality (three in the illustrated embodiment)
A stop projection 88 is provided. On the other hand, the biasing spring member 50
The annular central portion 78 corresponds to each of the locking projections 88.
Through holes 9 (three in the illustrated embodiment)
0 is formed, and the support member 52 is
A through hole 92 is formed corresponding to each. Therefore,
The biasing spring member 50 and the annular flange 77 of the support member 52
When the plate member 86 is attached,
Each locking projection 88 is provided with a corresponding one of the insertion holes 9 of the biasing spring member 50.
0 and the support member 52 through the through hole 92 of the support member 52.
In the other side (as shown by the solid line in FIG. 5).
), And projecting ends of the locking projections 88 as required
Deformed and locked to the other end of the support member 52
As a result, the annular central portion 78 of the biasing spring member 50
Between the support member 86 and the support member 52. The unit assembly 26 according to the illustrated embodiment
In addition, in the circumferential direction, one end face of the support member 52 is
A plurality of protrusions 94 are provided at intervals and a biasing spring is provided.
The annular central portion 78 of the member 50 corresponds to the projection 94 described above.
A plurality of openings spaced circumferentially to define a projection receiver
96 are formed. The tip side of each projection 94 is a bias spring.
Through the opening 96 of the member 50, the plate member 86 and the
It extends beyond the armature 24 to one side of the rotor 22,
The tip is in contact with or close to one side of the rotor 22.
(See FIG. 4). In the illustrated embodiment, the protrusion 94
In connection with the extension of
The peripheral edge of the material 86 has an arc-shaped cut corresponding to the opening 96.
A notch 98 is formed. As it is like this, each
The protrusion 94 is received in the opening 96 and the notch 98, and
The driving force is transmitted between the member 52 and the biasing spring member 50.
(In other words, the supporting member 52 and the biasing spring portion)
The asial load generated between the members 50, that is, the load in the rotation direction
As well as a clutch mechanism as described later.
18 serves to improve the responsiveness. Clutch mechanism 1
In order to further improve the responsiveness of No. 8, as shown in a specific example,
The tip side of the annular flange 77 of the support member 52 is also biased by a spring portion.
Projecting beyond the material 50 and the plate member 86,
Preferably, the end is in contact with or close to one side of the rotor 22.
In the illustrated embodiment, the top surface of the projection 94 and
The tip surface of the annular flange 77 is substantially on one surface of the rotor 22.
Are configured to define substantially coplanar planes that are top parallel
(See FIG. 4). The gear 20 is mounted on an input rotary element.
The first boss member 44 and the second boss of the unit assembly 26
A coil spring hand is attached to the other end of the
Step 100 is fitted. As shown in FIGS. 1 and 2
The large diameter portion of the second boss member 54 of the unit assembly 26
58 extends toward the first boss member 44, and
The end faces of members 44 and 54 are brought into contact with or close to each other.
ing. The outer diameter of the large diameter portion 58 of the second boss member 54
The outer diameter of the first boss member 44 is substantially equal to
The spring means 100 is connected to the large diameter portion 58 of the second boss member 54.
The first boss member 44 is fitted over both. Figure
In the embodiment shown, the coil spring means 100 is shown in FIG.
2 and a right-handed winding as viewed from the left side (therefore, the gear 20
Is supported when it is rotated in the direction indicated by arrow 102.
A force for preventing the rotation of the member 52 is applied to the supporting member 5.
2 shrinks when rotated relative to gear 20
Direction). Such coil spring means
100 is formed at the other end of the support member 52.
Notch 104 (in the illustrated embodiment,
One of the notches 104 formed by placing
To the other end 100
b is a notch 1 formed in the annular boss portion 42 of the gear 20.
06 (in the embodiment of the figure, four at intervals in the circumferential direction)
Inserted into one of the cutouts 106)
Therefore, it is connected to this. The clutch mechanism 18 is the same as that described above.
As will be readily appreciated, there are substantially four mounting elements, namely
Electromagnetic means 28, unit assembly 26, coil spring means 1
00 and a gear 20. And these
By mounting the support shaft 10 on the small diameter portion 10a as shown in FIG.
Thus, it can be used as the first mode. That is,
In the case of using as one mode, it is understood from FIG.
First, the electromagnetic means 28 is attached, and then the small diameter portion 10a
The pin member 66 is attached to the pin hole 64 of the
The length is somewhat longer than the diameter of the small diameter portion 10a,
When installed as required, both ends are small as shown in FIG.
Protruding from the diameter portion 10a) and the unit assembly 26
The notch 62 of the second boss member 54 and the rotor 2
The pin portion is defined by a pin receiving portion defined by the second concave portion 76.
The both ends of the member 66 are engaged. Next, the coil spring means
One end of 100 is covered with the large diameter portion 58 of the second boss member 54.
And one end 100a thereof is inserted into the notch 104 of the support member 52.
Insert Next, the gear 20 is mounted, and the coil spring
A second gear attached to the gear 20 at the inner diameter of the other end of the step 100
1 boss member 44, and the other end 100b is toothed.
Insert into the notch 106 formed in the annular boss portion 42 of the car 20
After that, the locking member 49 is connected to the other end of the small diameter portion 10a.
(Right end in FIG. 1). Thus, as shown in FIG.
Assemble as required on the small diameter part 10a of the support shaft 10
And the number of assembly steps is
It can be easily and quickly assembled. Heel
In the first embodiment, electromagnetic means is provided on the other side of the rotor 22.
28 electromagnetic coils 32 are arranged and the electromagnetic means 28 is locked
The projection 40 prevents its rotation. Also, the second button
The support member 54 and the rotor 22 are supported via a pin member 66.
It rotates integrally with the shaft 10 and is attached to the support member 52 and the support member 52.
Armature 24, biasing spring member 50 and plate
The member 86 is connected to the second boss member 54, and thus to the support shaft 10.
And can be freely rotated.
The first boss member 44 is rotatable with respect to the support shaft 10.
is there. In the illustrated embodiment, the plate member
86 by deforming the protruding end of the locking projection 88.
Is fixed to the other end of the support member 52 by the
The locking is preferably as follows, as in the illustrated embodiment.
Good. That is, as shown in FIG.
The right end of the hole 92 (the right end in FIGS. 1 to 3 and 5)
Part) is extended rightward, and the extended part 9 of the through hole 92 is expanded.
2a to accommodate the deformed portion of the locking projection 88.
Preferably, the support member 5
2. A set including a biasing spring member 50 and a plate member 86
The standing element can be reduced in size. The illustrated embodiment
When the extended portion 92a is provided in the through hole 92 as in
Pressing work such as a punch to deform the locking projection 88
The tip of the tool 108 is concave, and the tip surface 110 is an arc-shaped surface.
It is desirable to specify By hiding
The locking projection is projected as shown by a solid line in FIG.
The protruding portion of the portion 88 is moved to the position shown in FIG.
Deformed as required as indicated by the dashed line and the deformed part
To the extended portion 92a of the through hole 92 securely.
Can be. Next, referring mainly to FIG.
Operation and effect when the clutch mechanism 18 is used in the first mode
The result will be described. First, a current is supplied to the electromagnetic coil 32.
Explaining the case where power is supplied, the electromagnetic means 28 is energized.
Then, the electromagnetic force of the electromagnetic means 28 causes
FIG. 24 shows the biasing force against the elastic biasing action of the biasing spring member 50.
1 and moves to the left, magnetically
The armature 24 and the rotor 22 are brought into contact with each other.
It becomes a continuous state. Gear 20 is indicated by arrow 102 (see FIG. 2)
And supported via coil spring means 100
The member 52 is also rotated in the same direction (the supporting member 52 and
The biasing spring member 50 and the armature 24 are also integrally rotated.
Therefore, the armature 24 and the rotor 22 are magnetic.
When the connection state is established by being attracted, the support shaft 10 stops.
Prevents the support member 52 from rotating.
Force acts. Then, the rotation stopping force
As a result, a relative speed difference occurs between the gear 20 and the support member 52,
The coil spring means 100 is contracted due to the speed difference.
You. Thus, the first through the coil spring means 100
The boss member 44 and the second boss member 54 are connected and supported.
The shaft 10 includes a pin member 66, a second boss member 54, and a coil
Gear 20 through the spring means 100 and the first boss member 44
The driving connection is made. Thus, the rotational power of the gear 20 is supported
Transmitted to the shaft 10 and mounted on the support shaft 10 and thus
The timing roller 12 is moved by an arrow 102 of the gear 20 (FIG. 2).
(See Reference)).
Convey the paper as required. Next, the supply of current to the electromagnetic coil 32 is stopped.
A description will be given of a case in which the electromagnetic means 28 is de-energized.
Then, the spring is biased by the elastic biasing action of the biasing spring member 50.
The armature 24 moves rightward in FIG.
Away from one side of the armature, the armature 24 and the rotor 22
The connection is released (i.e., the amateur 24 is biased
It returns to the position shown in FIG. 1 by the action of the spring member 50.
). When the amateur 24 returns, the support member 52
Spring member 50 interposed between armature 24 and armature 24
Is separated from one side of the rotor 22 by the elastic biasing action of
The armature 24 and the rotor 22
The connection is released quickly. At the time of this return, the second
Outer diameter of middle diameter portion 60 of boss member 54 and inner diameter of support member 52
Due to the gap existing between the armature 24 and the support shaft 1
Although it tends to be slightly inclined with respect to 0,
The protrusion 94 provided on one end surface of the support member 52 is a rotor.
22 is in contact with or close to one side of FIG.
Amateur 24 tilts slightly as can be easily understood from
In this case, the front end face of the projection 94 of the support member 52 is
2 comes in contact with one side, and when returning, amateur 2
4 due to contact of one side of rotor 22 with drag
Elephant is prevented, and the armature 24 contacts one side of the rotor 22.
A decrease in responsiveness due to touch is effectively prevented.
Furthermore, in the illustrated embodiment, the annular
The tip of the flange 77 also contacts or approaches one side of the rotor 22
Therefore, the so-called play of the support member 52 itself is reduced.
Responsiveness is further prevented. Flax
When the connection between the chuck 24 and the rotor 22 is released, the upper
Of the coil spring means 100 stored at the time of the drive transmission described above.
The support member 52 moves in the direction indicated by the arrow 102 by the elastic force.
Further pivoting, the coil spring means 100 is expanded.
You. When the coil spring means 100 is expanded, the support member 5
2 is rotatably mounted on the second boss member 54, and
The support member 52 includes a biasing spring member 50, an amateur 24 and
And only the plate member 86 is mounted,
The support member 52 is a coil spring without receiving a large resistance.
Easily and quickly as required by the elastic force of the means 100
Rotated. Thus, the coil spring means 100 expands.
Then, the first boss member 44 and the second boss member 54
The connection by the ile spring means 100 is released and thus the teeth
The drive connection between the vehicle 20 and the support shaft 10 is released. Such electricity
When the magnetic means 28 is de-energized, it is easily understood.
In addition, the coil spring means 100 is
Support member 52, biasing spring member 50 and amateur
24 only rotates, the support shaft 10 and thus the
The roller 12 does not rotate. In the clutch mechanism 18 of the illustrated embodiment,
Further, the rotor 22, the armature 24, the biasing spring portion
The material 50, the support member 52, and the second boss member 54 are united.
The number of assembly elements is significantly smaller than before.
The rotor 22 and the armature which are particularly important
The distance between the fixtures 24 can also be kept constant. Ma
In addition, the armature 24 plays through the biasing spring member 50.
Is fixed to one end surface of the support member 52 by the support member 86.
Therefore, the plate member 86 is positioned at the annular center of the biasing spring member 50.
Substantially evenly over substantially the entire area of the portion 78, such an annular central portion 7
8 is securely fixed between the plate member 86 and the support member 52.
The biasing spring member 50, the support member 52
And the assembly element comprising the plate member 86 can be reduced in size.
Can also be. Further, the support member 5
To prevent the deformation of the amateur 24 due to the fixation to 2
Responsiveness is also improved due to this. An electromagnetically controlled spring clutch mechanism as described above.
18 is an electromagnetic means 28, a unit assembly 26, a coil
The spring means 100 and the gear 20 are connected to the support shaft 10 as follows.
By attaching to the diameter portion 10a, the second shape shown in FIG.
Can be used as a state. That is, the second mode
When using it, first, as understood from FIG.
Attach the car 20 (the attachment of the gear 20 is attached to it
The first boss member 44 is connected to the other end, that is, in FIG.
Extend to the right side) and then the pin of the small diameter portion 10a
The pin member 66 is mounted in the hole 64. Next, the coil spring hand
The other end of the step 100 is connected to a first bobbin mounted on the gear 20.
The other end 100b of the gear 20
The boss 42 is inserted into a notch 106 formed in the boss 42. I
After that, the unit assembly 26 is mounted (the unit
When the second boss member 54 is attached to the first boss
In order to face the member 44, that is, the rotor 22 is
The inner diameter of one end of the coil spring means 100
The inside diameter of the second boss member 54 of the unit assembly 26 is large.
The second boss member 54 in the recess 68 of the second boss member 54.
Accordingly, both ends of the pin member 66 are engaged with the pin receiving portion defined.
Then, one end 100a of the coil spring means 100 is connected.
Notch formed in support member 52 of unit assembly 26
Insert into 104. Next, the electromagnetic means 28 is switched as required.
Attached (such electromagnetic means 28, as in the first embodiment,
Notch 3 of locking portion 36 provided in field core 30
8, the locking projection 40 provided on the rear substrate 4 is locked.
The locking member 49 is further locked to the other end of the small diameter portion 10a.
You. Thus, as shown in FIG.
0a is assembled as required. In the above-described second embodiment, the first embodiment
The electromagnetic coil of the electromagnetic means 28 is provided on the other side of
The electromagnetic means 28 is provided by a locking projection 40.
Its rotation is blocked. Further, the second boss member 54 and
The rotor 22 is integrated with the support shaft 10 via a pin member 66.
The support member 52 and the armature attached thereto are rotated.
A, the biasing spring member 50 and the plate member 86
Of the boss member 54, and thus of the support shaft 10.
And the gear 20 and the first boss mounted on the gear 20
The member 44 is rotatable with respect to the support shaft 10. And
In the second embodiment, FIG. 1 is compared with FIG.
And the mounting position of the gear 20
Is more vertical on the substrate 4 side than when used in the first embodiment.
Approach a predetermined amount (that is, the gear 20 is mounted on the support shaft 1
0 is one end of the small diameter portion 10a). [0023] When used in the second mode described above,
The effect substantially the same as that obtained by using the first embodiment is achieved.
You. That is, when the electromagnetic means 28 is energized, as described above,
Then, the coil spring means 100 is contracted, and the first boss member
44 and the second boss member 54 via the coil spring means 100
And thus the rotational power from the gear 20 is the first
Boss member 44, coil spring means 100, second boss member
Transmitted to the support shaft 10 via the pin 54 and the pin member 66.
You. On the other hand, when the electromagnetic means 28 was deenergized, it contracted.
The coil spring means 100 is expanded as described above,
Coil spring means 1 of boss member 44 and second boss member 54
00 and thus the gear 20 and the support shaft
The drive connection of 10 is released. And at the time of de-energization
Changes the coil spring means 100 with the rotation of the gear 20.
Support member 52, biasing spring member 50 and amateur
22 only rotates, the support shaft 10 rotates
There is no. Thus, the electromagnetic control in the illustrated embodiment
In the spring clutch mechanism, only a relatively simple configuration
Can be used in two different forms simply by changing the assembly order.
Can be used extensively without any design changes
Can be. As described above, the electromagnetically controlled spring clutch according to the present invention
Although the mechanism has been described based on the illustrated embodiment, the present invention
The present invention is not limited to only such embodiments, and
Various changes and modifications are possible without departing from the scope of
is there. The electromagnetically controlled spring clutch mechanism according to the present invention
Is configured as described above, and is rotatably mounted on the shaft member.
On one end face of the attached support member facing the biasing spring member,
A plurality of protrusions are provided at intervals in a circumferential direction, and the plurality of protrusions are provided.
The tip of each protrusion extends beyond the biasing spring member and the amateur
Because it is in contact with or close to one side of the rotor, the shaft
Electromagnetic due to the gap between the inner diameter of the member and the support member
The armature tilts with respect to the support shaft when the means is de-energized.
If it tries to face, a protrusion provided on one end surface of the support member
Is in contact with one side of the rotor and the amateur is on one side of the rotor.
The dragging phenomenon caused by contact with the surface is prevented. Follow
The armature contacts one side of the rotor.
A decrease in responsiveness is effectively prevented.

【図面の簡単な説明】 【図１】本発明に従って構成された電磁制御ばねクラッ
チ機構の一具体例を静電複写機のタイミングローラに第
１の形態で適用した例を示す断面図。 【図２】図１の電磁制御ばねクラッチ機構を分解して示
す分解斜視図。 【図３】図１の電磁制御ばねクラッチ機構のユニット組
立体を分解して示す拡大分解斜視図。 【図４】図３のユニット組立体を装着した状態を示す断
面図。 【図５】図３のユニット組立体の偏倚ばね部材の固定方
法を説明するための部分拡大断面図。 【図６】図１の電磁制御ばねクラッチ機構を第２の形態
で適用した例を示す断面図。 【符号の説明】 ２：垂直前基板 ４：垂直後基板 １０：支持軸 １２：タイミングローラ １４：係止部材 １６：係止部材 １８：電磁制御ばねクラッチ機構 ２０：歯車（入力回転要素） ２２：ロータ ２４：アマチュア ２６：ユニット組立体 ２８：電磁手段 ３０：フィールドコア ３２：電磁コイル ３４：スリーブ部材 ４４：第１のボス部材 ５０：偏倚ばね部材 ５２：支持部材 ５４：第２のボス部材 ６２：切欠き（ピン受部） ６４：ピン孔 ６６：ピン部材 ６８：凹部（ピン受部） ７０：ロータの環状基板 ７２：ロータの環状部 ７４：ロータの接続部 ７７：支持部材の環状フランジ ７８：偏倚ばね部材の環状中央部 ８０：偏倚ばね部材の突出部 ８６：プレート部材（ばね固定部材） ９４：突起 １００：コイルばね手段BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an example in which a specific example of an electromagnetically controlled spring clutch mechanism configured according to the present invention is applied to a timing roller of an electrostatic copying machine in a first embodiment. FIG. 2 is an exploded perspective view showing the electromagnetic control spring clutch mechanism of FIG. 1 in an exploded manner. FIG. 3 is an enlarged exploded perspective view showing a unit assembly of the electromagnetic control spring clutch mechanism of FIG. 1 in an exploded manner. FIG. 4 is a sectional view showing a state where the unit assembly of FIG. 3 is mounted. FIG. 5 is a partially enlarged cross-sectional view for explaining a method of fixing a biasing spring member of the unit assembly of FIG. 3; FIG. 6 is a sectional view showing an example in which the electromagnetic control spring clutch mechanism of FIG. 1 is applied in a second embodiment. [Description of Signs] 2: Front vertical substrate 4: Vertical rear substrate 10: Support shaft 12: Timing roller 14: Locking member 16: Locking member 18: Electromagnetic control spring clutch mechanism 20: Gear (input rotary element) 22: Rotor 24: amateur 26: unit assembly 28: electromagnetic means 30: field core 32: electromagnetic coil 34: sleeve member 44: first boss member 50: biasing spring member 52: support member 54: second boss member 62: Notch (pin receiving portion) 64: pin hole 66: pin member 68: concave portion (pin receiving portion) 70: rotor annular substrate 72: rotor annular portion 74: rotor connecting portion 77: support member annular flange 78: An annular central portion 80 of the biasing spring member: a projecting portion 86 of the biasing spring member: a plate member (spring fixing member) 94: a projection 100: a coil spring means

Claims (1)

(57)【特許請求の範囲】 １．回転自在に装着された軸部材と、該軸部材に装着さ
れた入力回転要素と、該軸部材と一体に回転せしめられ
るロータと、該ロータの片面側に対向して位置するアマ
チュアと、該軸部材に対して回転自在に装着された支持
部材と、該支持部材と該アマチュアの間に配設され該ア
マチュアを該ロータの該片面から離隔する方向に弾性的
に偏倚せしめる偏倚ばね部材と、該ロータの他面側に配
設され且つ付勢されると該偏倚ばね部材の弾性偏倚作用
に抗して該アマチュアを該ロータの該片面に磁気的に吸
着せしめる電磁手段と、一端が該支持部材に連結された
コイルばね手段とを含み、該コイルばね手段の収縮によ
って該入力回転要素からの駆動力を伝達する電磁制御ば
ねクラッチ機構において； 該支持部材の該偏倚ばね部材に対向する一端面には周方
向に間隔を置いて複数個の突起が設けられ、該複数個の
突起の先端は該偏倚ばね部材及び該アマチュアを越えて
該ロータの該片面に接触乃至近接せしめられている、こ
とを特徴とする電磁制御ばねクラッチ機構。 ２．該支持部材の該一端面の内周面には環状フランジが
設けられ、該環状フランジの先端は該偏倚ばね部材及び
該アマチュアを越えて該ロータの該片面に接触乃至近接
せしめられている、請求項１記載の電磁制御ばねクラッ
チ機構。 ３．該複数個の突起の先端面及び該環状フランジの先端
面は、該ロータの該片面に平行である同一平面を規定す
る、請求項２記載の電磁制御ばねクラッチ機構。 ４．該ロータ、該偏倚ばね部材及び該支持部材はユニッ
ト化されたユニット組立体を構成し、該偏倚ばね部材は
環状中央部と該環状中央部から鎌状に延びる複数個の突
出部を有し、該環状中央部が該支持部材に固定され、該
複数個の突出部の自由端部が該アマチュアに固定されて
いる、請求項１記載の電磁制御ばねクラッチ機構。 ５．該複数個の突起は駆動力伝達用突起であり、該偏倚
ばね部材の該環状中央部には該駆動力伝達用突起に対応
して複数個の突起受部が形成されており、該駆動力伝達
用突起の各々の先端側は対応する該複数個の該突起受部
に受け入れられ、更に該アマチュアを越えて該ロータの
該片面に接触乃至近接せしめられている、請求項４記載
の電磁制御ばねクラッチ機構。 ６．該入力回転要素と一体に回転する第１のボス部材
と、該第１のボス部材に隣接して該軸部材に装着され該
軸部材と一体に回転する第２のボス部材を備え、該ユニ
ット組立体は更に該第２のボス部材を含み、該第２のボ
ス部材には一端部に該ロータが固定されると共に中間部
に該支持部材が回転自在に装着されており、該入力回転
要素は該軸部材に回転自在に装着され、該コイルばね手
段は該第１のボス部材と該第２のボス部材の他端部とに
跨って被嵌され、該支持部材に連結された該一端から該
入力回転要素に連結された他端まで、該入力回転要素の
所定方向への回転に付随して該支持部材と該入力回転要
素とが相対的に回転せしめられると収縮される方向に捲
回され、該軸部材は出力回転軸を構成する、請求項４記
載の電磁制御ばねクラッチ機構。(57) [Claims] A shaft member rotatably mounted, an input rotating element mounted on the shaft member, a rotor rotated integrally with the shaft member, an armature facing one side of the rotor, A supporting member rotatably mounted on the member, a biasing spring member disposed between the supporting member and the armature, and resiliently biasing the armature in a direction away from the one surface of the rotor; and electromagnetic means allowed to magnetically attracted the armature to the one side of the rotor when it is and biased is disposed on the other surface side of the rotor against the elastic biasing action of the polarized倚spring member, one end of the support And a coil spring means coupled to the member, the electromagnetic control spring clutch mechanism transmitting a driving force from the input rotary element by contraction of the coil spring means; one end face of the support member facing the biasing spring member. To A plurality of protrusions are provided at intervals in a circumferential direction, and tips of the plurality of protrusions are brought into contact with or close to the one surface of the rotor beyond the biasing spring member and the armature. And an electromagnetic control spring clutch mechanism. 2. An annular flange is provided on an inner peripheral surface of the one end surface of the support member, and a tip of the annular flange is brought into contact with or close to the one surface of the rotor beyond the biasing spring member and the armature. Item 2. An electromagnetically controlled spring clutch mechanism according to Item 1. 3. The distal end surface and the tip surface of the annular flange of the plurality of projections define a same plane which is flat row on the one side of the rotor, the electromagnetic control spring clutch mechanism according to claim 2, wherein. 4. The rotor, the biasing spring member and the support member constitute a unitized unit assembly, the biasing spring member has an annular central portion and a plurality of protrusions extending in a sickle shape from the annular central portion, 2. The electromagnetically controlled spring clutch mechanism according to claim 1, wherein said annular central portion is fixed to said support member, and free ends of said plurality of projections are fixed to said armature. 5. The plurality of protrusions are driving force transmitting protrusions, and a plurality of protrusion receiving portions are formed at the annular central portion of the biasing spring member corresponding to the driving force transmitting protrusions. 5. The electromagnetic control according to claim 4, wherein a tip end of each of the transmission projections is received by the corresponding one of the plurality of projection receiving portions, and is further brought into contact with or close to the one surface of the rotor beyond the armature. Spring clutch mechanism. 6. The first boss member and, said mounted on the shaft member adjacent to the first boss member which rotates together with the input rotary element
A second boss member which rotates the shaft member integrally, the unit assembly further comprises a second boss member, the intermediate portion with the boss member of the second said rotor is fixed to one end The support member is rotatably mounted on the shaft, the input rotary element is rotatably mounted on the shaft member, and the coil spring means is provided at the other end of the first boss member and the second boss member. From the one end connected to the support member to the other end connected to the input rotation element, the support member and the input are connected to the rotation of the input rotation element in a predetermined direction. 5. The electromagnetically controlled spring clutch mechanism according to claim 4, wherein when the rotating element is relatively rotated, the rotating element is wound in a direction in which the rotating element is contracted, and the shaft member forms an output rotating shaft.