JP4050638B2

JP4050638B2 - Follower bearing with lubrication device

Info

Publication number: JP4050638B2
Application number: JP2003065253A
Authority: JP
Inventors: 孝明壷井
Original assignee: Nippon Thompson Co Ltd
Current assignee: Nippon Thompson Co Ltd
Priority date: 2003-03-11
Filing date: 2003-03-11
Publication date: 2008-02-20
Anticipated expiration: 2023-03-11
Also published as: JP2004270876A

Description

【０００１】
【発明の属する技術分野】
本発明は、摺動トラック面に接触させて使用する潤滑装置を備えたフォロア軸受の改良に関する。
【０００２】
【従来の技術】
従来例のカムフォロア或はローラフォロアと称されるフォロア軸受の外輪に潤滑油を供給する構造は、外輪外周面とカバーとにより形成された空隙たる潤滑油溜りが、常に潤滑油を保持し、かつ塗布する構造である。
また、フォロア軸受の外輪外周面とカバーとの間の空隙にフェルト等の吸油性軟質材を装着することにより、潤滑油のフォロア軸受の外輪外周面に対する塗布ができ、また該カバーにより潤滑油の飛散の抑制が可能な構造であった。（例えば特許文献１参照）
【０００３】
【特許文献１】
特開平９−８９０７８号公報（第２頁、第３頁、図１Ａ、１−Ｂ、図３）
【０００４】
【発明が解決しようとする課題】
しかしながら、前記特開平９−８９０７８号公報に示されるものは、外輪外周面とカバーとにより形成された空隙たる潤滑油溜りに吸油性軟質材料たるフェルトを装着して給油する構造であり、フェルトと外輪外周面との接触状態により摺動抵抗が変化し、場合によっては摺動抵抗が大きくなるという問題がある。
【０００５】
またフォロア軸受の外周面を覆うカバーが、フォロア軸受の軸の端面部分またはカム従動節本体に固定されるものであり、従って前記軸の端面部分または該軸のカバー取付部の加工を必要とし、加工工程が増加する等の問題もある。
【０００６】
またフォロア軸受の軸の端面部分に、カバーを固定するための該軸の端面部分の利用、例えば潤滑油の供給孔の形成などが制限される問題がある。
【０００７】
このため、本発明は、外輪外周面の転動時に、潤滑部材との接触による摺動抵抗が少なく、しかも焼付防止が可能で、フォロア軸受の寿命の向上が図られ、かつ潤滑油の飛散もなく、クリーン性を向上させることができ、しかも加工工数を減少できると共に、フォロア軸受の軸の軸端の利用も可能な潤滑装置を備えるフォロア軸受を提供することを課題としている。
【０００８】
【課題を解決するための手段】
前記課題を解決するために、請求項１の発明では、外輪が組付けられている軸付きカムフォロア或はローラフォロアと称されるフォロア軸受において、フォロア軸受の外輪に少なくとも２箇所で接触して潤滑を行う潤滑部材を具備する潤滑装置と、該潤滑装置を外輪外周面に向って当接支持する支持部材とが、フォロア軸受の軸に軸支されて従動節本体に共締めして固定するよう構成されていることを特徴とする潤滑装置を備えたフォロア軸受が提供される。
請求項２の発明では、外輪が組付けられている軸付きカムフォロア或はローラフォロアと称されるフォロア軸受において、フォロア軸受の外輪に少なくとも２箇所で接触して潤滑を行う潤滑部材を具備する潤滑装置と、該潤滑装置を外輪外周面に向って当接支持する支持部材とが、フォロア軸受の軸によって位置決めして軸支されていることを特徴とする潤滑装置を備えたフォロア軸受が提供される。
【０００９】
好ましくは、前記潤滑部材に、フォロア軸受の外輪が転動する相手側転動面に当接する接触部が形成されており、かつ潤滑部材の支持部材に、前記接触部近傍の相手側転動面に対して微小間隔を保持して対峙する位置にスクレイパーを形成する（請求項３）。
好ましくは、前記支持部材が、弾性材よりなる（請求項４）。
【００１０】
好ましくは、前記潤滑装置の潤滑部材が、潤滑油を含有した多孔質構造の焼結樹脂部材、及び潤滑油の再補給を可能とした多孔質構造の焼結樹脂部材のうちから選ばれた潤滑部材である（請求項５）。
【００１１】
好ましくは、前記潤滑装置の潤滑部材が固形潤滑剤である（請求項６）。
【００１２】
【発明の実施の形態】
図１ないし図４は、本発明を適用した潤滑装置を備えたフォロア軸受の第１の実施例を示すもので、フォロア軸受たる軸付きカムフォロア１の構成の概要を示しており、厚肉の外輪４が組付けられている軸付きカムフォロア１に、潤滑部材５が具備された潤滑装置２が装着され、かつ該潤滑装置２を、外輪の外周面６に向って支持部材３が若干の押圧力を有して当接支持した構成とされている。
【００１３】
次に第１の実施例の軸付きカムフォロア１の詳細を、図２(A)（正面図）、図２(B)（縦断面図）、図２(C)（側面図）、図２(D)（支持体の背面図）について説明する。
【００１４】
図２(B)および図２(C)において、軸付きカムフォロア１の軸７の軌道部８は、ニードルローラたる転動体群９が転動するための軌道面を形成しており、該転動体群９の外側に組み込まれた外輪４が、軸７に対して転動体群９を介して回動自在に支承されている。
【００１５】
軸７の端部には、軸取付ねじ部１０が形成されており、図２(B)に一部破断面として表示されている従動節１１に穿設された軸孔１２に軸７が挿着され、ナット１３により軸取付部１４で前記従動節１１に固着されると共に、後述される支持部材３の端面材２１の端部が、同様に軸７の軸取付部１４に軸支されて共締めされている。この時軸７の端面に穿設された六角孔４０はナット１３による締付時の締め返しに供せられる。
【００１６】
図２(C)の半部を断面とした側面図に示される符号１５は、軸７と一体的なフランジ部、符号１６は軸７に組み込まれた側板で、両者共に外輪４の転動時における軸方向の位置決め用とされている。
【００１７】
図１及び図２(A)に示されるように、潤滑装置２の潤滑部材５は、フォロア軸受たる軸付きカムフォロア１の外輪４の外周面６に少なくとも２箇所で接触して潤滑を行うと共に、一方で外輪４が接触し転動する相手側転動面１７にも２箇所で接触し、潤滑を行う。従って該潤滑装置２は、前記軸付きカムフォロア１の外輪４、並びに相手側転動面１７との両者に同時に接触、潤滑を行うもので、図２(A)に示されるように後述される支持部材３の保持部２２に装着されている。
【００１８】
図３は前記潤滑部材５を示しており、該潤滑部材５は、前記保持部２２に図３に示す背部５ｃ部分で着脱自在に装着されており、上端部５ａは、外輪４の図２(A)、(B)に示す相手側転動面１７に接触して潤滑を行う部分とされており、図示例では、縦断面半円形状とされ、接触による摩擦係数を少なくし、必要以上の摩擦力を与えることなく相手側転動面１７への潤滑を円滑に行いうる形状とされ、また外輪４に接触する隅部５ｂは円弧面に形成され、外輪の外周面６に対する回転摩擦に適合する円弧面とされ、前記背部５ｃは、支持部材３の前記保持部２２に適合する形状とされている。なお、潤滑部材５の形状は、同一機能を有する限り、図示構造に限定されるものではない。
支持部材３は、図４(A)、図４(B)、図４(C)に示されるように弾性材たる板材がＬ字形に折曲され、端面部材(21)が形成されており、該端面部材（21)は端部の孔２０により、軸付きカムフォロア１の軸７に軸支されている。支持部材３は正面側を示す図４(A)及び、図２(A)に示されるごとく、外輪４を背面及び上部両側２箇所で覆う形状とされている。
【００１９】
また、前記支持部材３は、弾性を有する板材で形成されており、若干の押圧力を有して外輪の外周面６に向って潤滑部材５を確実に保持すると共に支持部材３のバネ作用により、潤滑部材(5)の接触部分に若干加圧作用をあたえうる設定をすることにより、軸付きカムフォロア１の外輪４の外周面６及び前記相手側転動面１７に、夫々適合する設定摺動抵抗での潤滑が円滑に行われる。
【００２０】
また支持部材３の上面端部には、軸付きカムフォロア１の外輪４が転動する相手側転動面１７に対応する位置に潤滑部材(5)を装着できる保持部２２が配設されている。即ち図３に示す潤滑部材５の上端部５ａの頂面が前記相手側転動面１７の摺動面に必要最小限の摺動抵抗で当接するよう保持されている。また前記上端部５ａに隣接して保持部２２の上面から、符号２４が付された突起片が立設され、該突起片２４の頂部が相手側転動面１７に対して微小間隔を保持して対峙する位置を占めており、潤滑部材５の上端部５ａに対応するスクレイパーとされ、前記相手側転動面１７の塵埃等の除去に供せられている。
【００２１】
潤滑装置２の支持部材３は、成形が容易な弾性を保有する材料であれば、金属のほか合成樹脂製であってもよい。
【００２２】
第１の実施例に示す潤滑部材５は、交換可能であれば、フェルト等の油吸収性軟質材料とし、潤滑油を含ませる構成としてもよい。
【００２３】
図５ないし図８は第２の実施例を示し、図５は第２の実施例のフォロア軸受たる軸付きカムフォロアの構成の概要を示しており、主たる使用目的、機能、作用において前記第１実施例と同一の部材は、同一名称、同一符号で表示している。符号１は、第１の実施例のものと同一構造のものを使用したフォロア軸受たる軸付きカムフォロア、２５は潤滑装置、２６は潤滑部材、２７は潤滑装置２５を支持する支持部材、４は軸付きカムフォロア１の厚肉の外輪、６は外輪４の外周面、１５はフランジ部、４０は軸取付用六角穴であり、符号３１は、後述される空隙部分を示し、潤滑装置２５の潤滑部材２６と、外輪外周面６とが接触していない部分であって潤滑油の油溜りとされている。
【００２４】
第２の実施例を示す詳細図である図６(A)、図６(B)、図６(C)において、軸付きカムフォロア１の外輪４に、上部の左右２箇所及び中心部直下１箇所の計３箇所で接触して潤滑を行う潤滑部材２６を具備する潤滑装置２５と、該装置２５を支持し軸付きカムフォロア１に軸支されている支持部材２７の主たる構成部分について説明する。
【００２５】
図６(A)は、軸付きカムフォロア１の縦断面であり、該カムフォロア１の軸７の軌道部８はニードルローラたる転動体群９が転動するための軌道面を形成しており、転動体群９の外周に組み込まれた外輪４は、軸７に対して転動体群９を介して回動自在に支承されている。
【００２６】
軸７の端部には、軸取付ねじ部１０が形成されており、破断面として表わす従動節１１に穿設された軸孔１２に軸７が挿入され、ナット１３で軸取付部１４が従動節１１に固着されていると共に、後述される支持部材２７の背面板３０が軸支され共締めされている。
【００２７】
図６(A)において、符号１５は軸７と一体的なフランジ部、符号１６は軸７に組み込まれた側板で、外輪４の転動時における軸方向位置決め用とされている。
【００２８】
図５及び図６(A)、(B)、(C)に示されるように、潤滑装置２５の潤滑部材２６は、軸付きカムフォロア１の外輪４の外周面６に対して少なくとも３箇所の潤滑接触部１８、１８、１９において接触すると共に、外輪４の外周面６が接触し転動する相手側転動面１７にも凸部たる接触部２８、２８が接触して潤滑する。従って前記カムフォロア１の外輪４と相手側転動面１７との両者の潤滑を同時に行う。
【００２９】
前記潤滑部材２６は、図７（Ａ）、（Ｂ）に示されるごとく、外径の両側面が垂直面をなし、下面が水平面をなし、上部の２箇所に外輪４の外周面６に対する潤滑接触部１８、１８及び相手側転動面１７に接触する接触部２８、２８が形成され、下面には１箇所の潤滑接触部１９が形成され、この、潤滑接触部１８、１８と潤滑接触部１９とを除く潤滑部材２６の内周面は、外輪４の外周面６との間に空隙部分３１、３１を形成する凹陥部とされて潤滑油の油溜りとされている。なお、図６（Ａ）に示すごとく、軸取付ねじ部１０の端面の給油口３７から軸７の軌道部８に通ずる潤滑油供給路３８が穿設されている。
なお、潤滑部材２６は、多孔質構造の焼結樹脂部材とされてもよく、この潤滑部材２６は、特開平１０−２０５５３４号公報に記載されているごとく高密度ポリエチレン樹脂の微粒子、例えば、細粒径３０μｍで、粗粒径が２５０〜３００μｍの粉末を、成形型に充填し、加圧加熱成形して作製したオープンポアから成る多孔質の焼結樹脂部材で作製されている。潤滑プレートの多孔質の焼結樹脂部材の空間率は、例えば、４０〜５０％のものを使用でき、上記の多孔質の焼結樹脂部材を、潤滑油であるタービン油等に浸漬し、潤滑油を多孔部に含浸させたものであり、潤滑油の補給も可能である。
【００３０】
また潤滑部材２６は、固形潤滑剤とされてもよく、この場合の潤滑部材２６は、特開２００１−２０８０５７号公報に一例として記載されているごとく、粉末樹脂として、超高分子量ポリエチレンパウダ（例えば、三井石油化学株式会社製のミペロン（登録商標）ＸＭ−２２０）と、潤滑油として、ＦＢＫオイル（タービン油）（ＲＯ＃１００）とを準備し、両者を重量比で３０：７０の割合で混合し、得られた液状混合物を成形型に注入し、この成形型を気密箱に配置して箱内圧を下げて脱泡し、成形型を１５０℃で１０分以上加熱して混合液を固形化したのち、放熱後に成形型から脱型し、仕上げ成形することにより、固形潤滑剤とされたものである。
【００３１】
図８(A)、(B)、(C)に示すものは、前記図７(A)、(B)に示す潤滑部材２６を支持する支持部材２７を示しており、図８(B)に示す背面板(30)に開設された図８(A)に示す孔３９により、支持部材２７が軸７に軸支され、背面板３０には図８(A)、(B)に示すごとく正面側に向って底面板３３が折曲形成されており、前記潤滑部材２６を着脱自在に載置できるように構成されており、該底面板３３の前縁の任意の２箇所に小片３６が上向きに折曲形成され、前記背面板３０と小片３６とにより潤滑部材２６を安定保持できるように構成されている。
【００３２】
また底面板３３の両側から上方へ折曲された折曲片３３Ａ、３３Ｂの上部には、潤滑部材２６を上方から保持する保持部３４が形成され、該保持部３４の先端部に図６(B)に示すように、前記相手側転動面１７に近接し、該面１７に対し微小間隔を保持して上端面が位置させられた突起片がスクレイパー３５として折曲形成され、前記転動面１７の塵埃除去に供せられている。
【００３３】
図９に示す潤滑装置を備えた軸付きカムフォロアは、図５に示す第２実施例の変形例であり、その基本構成は第２実施例と同一であり、その作用も同一であるが、潤滑部材４１が縦断面で欠円形状であり、該潤滑部材４１を保持する支持部材４２も同様の欠円形状とされている点で構造上の差を有する。従って図９において、第２実施例と同一作用、同一機能の部材については同一符合を用いて説明する。
【００３４】
図９に示す潤滑装置２９は、図５、図６(B)に示される第２の実施例の潤滑装置２５の変形例であり、外輪４の外周面６に接触して潤滑を行うもので、外輪４に対して上部の２箇所の接触部１８、１８、下部の１箇所の接触部１９で接触して潤滑を行い、相手側転動面１７に対応する潤滑面とされる接触部２８、２８が上部の上面に配設されており、この接触部２８、２８の各背面には、相手側転動面に近接してスクレイパー３５が形成されている。これ等の接触部１８、１８、１９、２８、２８及びスクレイパー３５の構成も、作用も、機能も、図５に示す実施例のものと同一であるが、全体の外形形状が略欠円形状であり、外観が良く、角形に比し占有空間が狭く、取付上のスペースを狭くしうるものである。
【００３５】
図１０(A)、(B)は、第３の実施例を示すものでフォロア軸受たるローラフォロア４３の構成の概要を示している。
この実施例は、第２の実施例の軸付きカムフォロア１をローラフォロア４３に組替えた構造のものであり、図１０では図示が省略されているが、第２の実施例の図５、図６(B)に示される潤滑装置２５、支持部材２７、潤滑部材２６は、第２の実施例のものと同一の部材を適用している。従って主たる使用目的、機能、作用において第２の実施例と同一の部材は同一名称、同一符号で表示しており、符号４３はローラフォロア、４４は外輪、４５は外輪外周面、３５はスクレイパーである。
【００３６】
即ち図１０(A)、(B)に示すローラフォロア４３の外輪４４に対する潤滑については、図６(B)に示す第２の実施例の潤滑装置２５と同一形状、同一作用のものを適用する。
即ち、潤滑装置２５は外輪４４の外周面４５に対して潤滑を行うもので、外輪４４の上部の２箇所の潤滑接触部１８、１８と下部の１箇所の潤滑接触部１９により接触して潤滑を行う。また前記相手側転動面１７に対応して接触部２８、２８が配設されており、該接触部２８、２８の接触により潤滑が行われ、また該接触部２８、２８の各背面には相手側転動面１７に近接してスクレイパー３５が形成されている。これ等の潤滑接触部１８、１８、１９、接触部２８、２８及びスクレイパー３５の構成、作用も、図５、図６(B)に示す実施例のものと同一のものである。
従って、該潤滑部材２６を具備している潤滑装置２５は、支持部材２７に支承されると共に支持部材２７の背面板３０でローラフォロア４３の軸４６に軸支されている。
図１０(A)に示すローラフォロア４３の縦断面において、ローラフォロア４３の軸４６に嵌入された内輪４７には、ローラフォロアたる転動体群４８が転動するための軌道面５６が形成されており、転動体群４８の外周に組込まれた外輪４４にも軌道面５９が形成されており、転動体群４８を介して軸４６に対して回動自在に支承されている。図１０(A)中符号５４は転動体群４８の保持器である。
【００３７】
軸４６の転動体群４８側の端部には軸４６と一体にフランジ部６０が形成され、他の端部には、軸取付ねじ部４９が形成されており、従動節１１に穿設された孔５０に軸４６が挿入され、ナット１３で固着されていると共に、図１０(A)、(B)に示されるように支持部材２７の背面板３０が軸支され共締めされている。
【００３８】
また符号５１は転動体群４８の両側において軸４６に組込まれた側板で、軸４６の端部に形成されたフランジ部６０と共に外輪４４の転動時における軸方向の位置決め用とされている。
【００３９】
図１１は、固形潤滑剤である潤滑部材を、図１０（Ａ）に示すローラフォロア４３における転動体群４８が配設される外輪４４と内輪４７との間の該転動体群４８の転動部位に、潤滑剤として組み込んだ実施の一例を、図１０（Ａ）中のＸ−Ｘ線断面位置に相当する軸４６の軸心と直交する縦断面として示している。
【００４０】
図１１において、軸４６に内輪４７が嵌着され、内輪４７と外輪４４との間に転動体群４８が配列され、内輪４７と外輪４４との間に転動体群４８が転動する軌道面５６、５９が形成され、外輪４４の外周面４５が相手側転動面１７に沿って転動する構造とされている。
【００４１】
図１１において転動体群４８と保持器５４とは、内輪４７と外輪４４との間において、転動体群４８の転動面が露出された状態で固形潤滑剤５５により覆われている。
【００４２】
前記転動体群４８と保持器５４及び固形潤滑剤５５とは、一体に組み立てられ、固形潤滑剤５５は内輪４７の軌道面５６と外輪４４の軌道面５９と、転動体群４８と保持器５４との間の間隙部分に、充填された構造で一体成形されている。前記固形潤滑剤５５は、ローラフォロア４３に限らず、既述のカムフォロアにも適用されることは勿論である。
【００４３】
潤滑部材として固形潤滑剤５５を用いた場合、転動体群４８の回転に伴い固形潤滑剤５５から滲み出た潤滑油が徐々に軌道面と転動体群４８との接触部分に供給されるので、内輪４７と外輪４４との間の潤滑性能を長期に亘って維持できる。
また固形潤滑部材５５は、前記軌道面５６の転動体群４８と保持器５４の隙間を塞ぐ形状に成形されるので、塵埃等の異物の侵入やある程度の水分の浸入を防止するシールとしての働きも奏する。
【００４４】
【発明の効果】
請求項１及び請求項２に記載される発明によると、軸付きカムフォロア或はローラフォロアと称するフォロア軸受の外輪に少なくとも２箇所で接触して潤滑を行う潤滑部材を具備する潤滑装置と、該潤滑装置を前記フォロア軸受の外輪の外周面に向って当接支持する支持部材とが前記フォロア軸受の軸に軸支されている構成であるから、外輪の転動に伴って、潤滑装置より適量の潤滑油が潤滑部に対して供給され、外輪外周面の転動による発熱や焼付きなどを良好に防止でき、接触部の損耗を防ぎ、寿命を向上させる効果をもたらし、かつ潤滑油の飛散を低減させることができ、クリーン性を向上させる効果を奏する。
請求項４に記載される発明によると、鋼板等弾性を有する材料を使用する支持部材のばね効果により接触部が押圧され所定の接触圧が付与でき、接触しての潤滑作用により、より効果的な潤滑油の供給ができる効果を奏する。
【００４５】
また、請求項１及び請求項２に記載される発明によると、潤滑部材は、外輪外周面と少なくとも２箇所で接触するので、外輪外周面と摺動部材たる潤滑部材との接触部分が少ないので摺動抵抗を抑えることができる効果がある。
【００４６】
請求項２に記載される発明によると、支持部材における潤滑部材の装着部分が外輪の外周面に対して位置決めされているので、潤滑部材の接触部分が正確に位置決めされ、かつ固着されて接触するので、接触部分の寸法管理が可能となり、より効果的に軌道面に潤滑油を供給でき、摺動抵抗を抑えることができる効果がある。
請求項１に記載される発明によると、支持体を軸と共締めして固定されるので、取付のための加工や部品を必要としない効果を有する。
更には、請求項１及び請求項２に記載される発明によると、フォロア軸受の外周域、軸端等に潤滑油溜り形成のためのカバー等が全く不要となるので、その加工工程を不必要とし、グリースニップルの取付、集中給油管の取付け等軸端の利用も可能とする等の付帯的効果も有する。
【００４７】
請求項３に記載される発明によると、潤滑部材に、フォロア軸受の外輪が転動する相手側転動面に当接する接触部が形成されており、潤滑装置の支持部材に前記接触部近傍の相手側転動面に対して微小間隔を保持して対峙する位置を占めるようにスクレイパーが形成されているので、潤滑装置の潤滑部材は相手側転動面にも接触し、相手側転動面により効果的に潤滑油を供給でき、摺動抵抗の減少、接触部の損耗防止等をより向上させうる効果がある。
【００４８】
更に、前記相手側転動面に接触する潤滑部材の接触部付近に配設されたスクレイパーにより、転動面の塵埃等を除去できるので、転動面の保護及び前述の効果のより一層の向上を図りうる効果がある。
【００４９】
請求項３に記載される発明によれば、軸付きカムフォロア或はローラフォロアと称するフォロア軸受の外輪外周面と潤滑部材との間には、上部２箇所と下部１箇所の接触潤滑部が配置されるのみで、接触部以外の部分には空隙部分たる油溜り部が軸心に沿って形成されているという構成であるから、外輪外周面と潤滑部材との間に形成された空隙部分の存在により摺動抵抗の減少を図ることができる効果を有している。
【００５０】
請求項５に記載される発明によると、潤滑装置の潤滑部材は、潤滑油を含有した多孔質構造及び潤滑油の再補給を可能とする多孔質構造の焼結樹脂部材で構成されているから、潤滑部材としての成形が容易であり、潤滑部材の交換が可能で取り扱いが容易であるという効果を有し、潤滑油供給系路が不要となり、フォロア軸受の構造を簡単としうる効果も奏する。
【００５１】
潤滑部材は、潤滑油を含有した多孔質構造の焼結樹脂部材であり、フォロア軸受の使用条件に対応した各種の潤滑油の選択、含浸、使用が可能であり、再含浸も可能となり、１組のフォロア軸受を継続して使用可能とする効果も有する。
【００５２】
請求項６の発明によると、潤滑部材が固形潤滑剤であり、該潤滑部材の交換のみにより、フォロア軸受の長期間の連続稼動を可能とする効果を奏し、更には潤滑油供給回路の形成が全く不要であるため、フォロア軸受の構造の簡略化、小型化を図りうる効果も奏する。
【図面の簡単な説明】
【図１】潤滑装置を備えたフォロア軸受たる軸付きカムフォロアの第１の実施例の斜視図である。
【図２】図１に示すものの正面、縦断面、側面、背面を示す図である。
【図３】図１に示されるものの潤滑部材の斜視図である。
【図４】図１に示されるものの支持部材の正面、背面、側面を示す図である。
【図５】潤滑装置を備えた軸付きカムフォロアの第２の実施例の斜視図である。
【図６】図５に示すものの断面、正面、側面を示す図である。
【図７】図５に示されるものの潤滑部材の正面、側面を示す図である。
【図８】図５に示されるものの支持部材の正面、側面、平面を示す図である。
【図９】潤滑装置を備えた軸付きカムフォロアの別の実施例の正面図である。
【図１０】潤滑装置を備えたローラフォロアの第３の実施例の断面図、正面図である。
【図１１】固形潤滑剤である潤滑部材を適用したローラフォロアの実施例における図１０（Ａ）中のＸ−Ｘ線断面位置に相当する縦断面図である。
【符号の説明】
１カムフォロア
２、２５潤滑装置
３、２７支持部材
４、４４外輪
５、２６、４１潤滑部材
６、４５外輪外周面
１７相手側転動面
１８、１９潤滑接触部
２４、３５スクレイパー
２８接触部
２９潤滑装置
３１空隙部分
４３ローラフォロア
４７内輪
５５固形潤滑剤[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a follower bearing including a lubricating device that is used in contact with a sliding track surface.
[0002]
[Prior art]
The structure for supplying lubricating oil to the outer ring of a follower bearing called a cam follower or roller follower in the conventional example is such that a lubricating oil reservoir, which is a gap formed by the outer peripheral surface of the outer ring and the cover, always holds the lubricating oil, and It is a structure to apply.
In addition, by installing an oil-absorbing soft material such as felt in the gap between the outer ring outer peripheral surface of the follower bearing and the cover, lubricating oil can be applied to the outer ring outer peripheral surface of the follower bearing, and the lubricating oil can be applied by the cover. The structure is capable of suppressing scattering. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-9-89078 (2nd page, 3rd page, FIG. 1A, 1-B, FIG. 3)
[0004]
[Problems to be solved by the invention]
However, what is shown in the above-mentioned JP-A-9-89078 is a structure in which a felt, which is an oil-absorbing soft material, is supplied to a lubricating oil reservoir, which is a gap formed by the outer peripheral surface of the outer ring and a cover, and is supplied with oil. There is a problem that the sliding resistance changes depending on the contact state with the outer peripheral surface of the outer ring, and the sliding resistance increases in some cases.
[0005]
Further, the cover that covers the outer peripheral surface of the follower bearing is fixed to the end surface portion of the shaft of the follower bearing or the cam follower body, and thus requires processing of the end surface portion of the shaft or the cover mounting portion of the shaft. There are also problems such as increased processing steps.
[0006]
Further, there is a problem that the use of the end surface portion of the shaft for fixing the cover, for example, the formation of a lubricating oil supply hole, is limited to the end surface portion of the shaft of the follower bearing.
[0007]
For this reason, the present invention has less sliding resistance due to contact with the lubrication member during rolling of the outer peripheral surface of the outer ring, and can prevent seizure, improve the life of the follower bearing, and also scatter the lubricating oil. Therefore, it is an object of the present invention to provide a follower bearing including a lubrication device that can improve cleanliness, reduce the number of processing steps, and can also use the shaft end of the shaft of the follower bearing.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, according to the first aspect of the present invention, in a follower bearing called a cam follower with a shaft or a roller follower on which an outer ring is assembled, the outer ring of the follower bearing comes into contact with at least two locations for lubrication. And a support member that abuts and supports the lubrication device toward the outer peripheral surface of the outer ring, and is supported by the shaft of the follower bearing so as to be fastened together with the follower node body. There is provided a follower bearing provided with a lubrication device .
According to a second aspect of the present invention, in a follower bearing referred to as a cam follower with a shaft or a roller follower on which an outer ring is assembled, a lubrication member comprising a lubrication member that contacts and lubricates the outer ring of the follower bearing at least at two locations. There is provided a follower bearing provided with a lubrication device, wherein the device and a support member that abuts and supports the lubrication device toward the outer peripheral surface of the outer ring are positioned and supported by the shaft of the follower bearing. The
[0009]
Preferably, the lubrication member is formed with a contact portion that abuts against a mating rolling surface on which an outer ring of the follower bearing rolls, and the mating rolling surface near the contact portion is formed on the supporting member of the lubrication member. A scraper is formed at a position facing each other while maintaining a minute interval.
Preferably, the support member is made of an elastic material.
[0010]
Preferably, the lubricating member of the lubricating device is selected from a porous sintered resin member containing a lubricating oil and a porous sintered resin member capable of replenishing the lubricating oil. It is a member (Claim 5) .
[0011]
Preferably, the lubricating member of the lubricating device is a solid lubricant (claim 6) .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 to 4 show a first embodiment of the follower bearing having a lubricating system which applies the present invention, it shows an outline of a configuration of the follower bearing serving shafted cam follower 1, thick A lubrication device 2 provided with a lubrication member 5 is attached to a cam follower 1 with a shaft to which an outer ring 4 is assembled, and the support member 3 slightly pushes the lubrication device 2 toward the outer peripheral surface 6 of the outer ring. It is the structure which contacted and supported with pressure.
[0013]
Next, details of the cam follower 1 with a shaft according to the first embodiment are shown in FIG. 2 (A) (front view), FIG. 2 (B) (longitudinal sectional view), FIG. 2 (C) (side view), FIG. D) (Back view of the support) will be described.
[0014]
2 (B) and 2 (C), the raceway portion 8 of the shaft 7 of the cam follower 1 with the shaft forms a raceway surface for rolling the rolling element group 9 as a needle roller. An outer ring 4 incorporated outside the group 9 is rotatably supported with respect to a shaft 7 via a rolling element group 9.
[0015]
A shaft mounting screw portion 10 is formed at the end of the shaft 7, and the shaft 7 is inserted into the shaft hole 12 formed in the driven node 11 shown as a partially broken surface in FIG. It is attached to the driven node 11 by the shaft mounting portion 14 with the nut 13, and the end portion of the end face material 21 of the support member 3 described later is similarly pivotally supported by the shaft mounting portion 14 of the shaft 7. It is tightened together. At this time, the hexagonal hole 40 drilled in the end surface of the shaft 7 is used for tightening when the nut 13 is tightened.
[0016]
Reference numeral 15 shown in the side view of the half part of FIG. 2C is a flange portion integral with the shaft 7, and reference numeral 16 is a side plate incorporated in the shaft 7. For positioning in the axial direction.
[0017]
As shown in FIG. 1 and FIG. 2 (A), the lubricating member 5 of the lubricating device 2 performs lubrication by contacting at least two places with the outer peripheral surface 6 of the outer ring 4 of the cam follower 1 with a shaft as a follower bearing. On the other hand, the other side rolling surface 17 with which the outer ring 4 comes into contact and rolls is also brought into contact at two locations for lubrication. Accordingly, the lubricating device 2 simultaneously contacts and lubricates both the outer ring 4 of the cam follower 1 with the shaft and the counterpart rolling surface 17. As shown in FIG. The holding part 22 of the member 3 is attached.
[0018]
FIG. 3 shows the lubricating member 5. The lubricating member 5 is detachably attached to the holding portion 22 at the back portion 5c shown in FIG. 3, and the upper end portion 5a is shown in FIG. A) and (B) are the parts that make contact with the mating rolling surface 17 and perform lubrication. In the example shown in the figure, the longitudinal cross-sectional shape is semicircular, and the friction coefficient due to contact is reduced, which is more than necessary. The shape is such that the other rolling surface 17 can be smoothly lubricated without applying a frictional force, and the corner 5b in contact with the outer ring 4 is formed in an arcuate surface, which is suitable for rotational friction with respect to the outer peripheral surface 6 of the outer ring. The back portion 5 c is shaped to fit the holding portion 22 of the support member 3. The shape of the lubricating member 5 is not limited to the illustrated structure as long as it has the same function.
As shown in FIG. 4 (A), FIG. 4 (B), and FIG. 4 (C), the support member 3 is formed by bending a plate material, which is an elastic material, into an L shape to form an end surface member (21). The end face member (21) is pivotally supported by the shaft 7 of the cam follower 1 with the shaft through the hole 20 at the end. As shown in FIG. 4 (A) and FIG. 2 (A) showing the front side, the support member 3 is shaped to cover the outer ring 4 at two locations on the back and upper sides.
[0019]
Further, the support member 3 is formed of an elastic plate material, has a slight pressing force, and reliably holds the lubricating member 5 toward the outer peripheral surface 6 of the outer ring, and also by the spring action of the support member 3. By setting the contact portion of the lubrication member (5) so that a slight pressurizing action can be applied, the set slide is adapted to the outer peripheral surface 6 of the outer ring 4 of the cam follower 1 with the shaft and the counterpart rolling surface 17 respectively. Smooth lubrication with resistance.
[0020]
In addition, a holding portion 22 to which a lubricating member (5) can be attached is disposed at a position corresponding to the counterpart rolling surface 17 on which the outer ring 4 of the cam follower 1 with a shaft rolls. . That is, the top surface of the upper end portion 5a of the lubricating member 5 shown in FIG. 3 is held so as to contact the sliding surface of the mating rolling surface 17 with a minimum required sliding resistance. Further, a protruding piece 24 is provided upright from the upper surface of the holding portion 22 adjacent to the upper end portion 5a, and the top of the protruding piece 24 holds a minute gap with respect to the counterpart rolling surface 17. The scraper corresponds to the upper end portion 5a of the lubricating member 5, and is used for removing dust and the like on the counterpart rolling surface 17.
[0021]
The support member 3 of the lubrication device 2 may be made of a synthetic resin in addition to a metal as long as it is a material having elasticity that can be easily molded.
[0022]
The lubricating member 5 shown in the first embodiment may be made of an oil-absorbing soft material such as felt and including lubricating oil as long as it can be replaced.
[0023]
FIGS. 5 to 8 show a second embodiment, and FIG. 5 shows an outline of the structure of a cam follower with a shaft as a follower bearing of the second embodiment, and the first embodiment is mainly used in purpose, function, and operation. The same members as those in the example are indicated by the same names and the same symbols. Reference numeral 1 denotes a cam follower with a shaft which is a follower bearing having the same structure as that of the first embodiment, 25 is a lubricating device, 26 is a lubricating member, 27 is a supporting member for supporting the lubricating device 25, and 4 is a shaft The cam outer follower 1 has a thick outer ring, 6 is an outer peripheral surface of the outer ring 4, 15 is a flange portion, 40 is a hexagonal hole for shaft mounting, 31 indicates a gap portion which will be described later, and a lubricating member of the lubricating device 25 26 and the outer ring outer peripheral surface 6 are not in contact with each other and are used as an oil reservoir for lubricating oil.
[0024]
6 (A), 6 (B), and 6 (C), which are detailed views showing the second embodiment, the outer ring 4 of the cam follower 1 with a shaft has two places on the left and right of the upper part and one place directly below the central part. The main components of the lubrication device 25 including the lubrication member 26 that performs lubrication by contacting at a total of three locations, and the support member 27 that supports the device 25 and is supported by the cam follower 1 with the shaft will be described.
[0025]
FIG. 6 (A) is a longitudinal section of the cam follower 1 with a shaft, and the raceway portion 8 of the shaft 7 of the cam follower 1 forms a raceway surface for rolling the rolling element group 9 as a needle roller. The outer ring 4 incorporated on the outer periphery of the moving body group 9 is rotatably supported with respect to the shaft 7 via the rolling body group 9.
[0026]
A shaft mounting screw portion 10 is formed at the end of the shaft 7. The shaft 7 is inserted into the shaft hole 12 formed in the driven node 11 represented as a fracture surface, and the shaft mounting portion 14 is driven by the nut 13. While being fixed to the node 11, a back plate 30 of a support member 27 described later is pivotally supported and fastened together.
[0027]
In FIG. 6A, reference numeral 15 is a flange portion integrated with the shaft 7, and reference numeral 16 is a side plate incorporated in the shaft 7 for axial positioning when the outer ring 4 rolls.
[0028]
As shown in FIGS. 5 and 6 (A), (B), and (C), the lubricating member 26 of the lubricating device 25 is lubricated at least at three locations with respect to the outer peripheral surface 6 of the outer ring 4 of the cam follower 1 with the shaft. The contact portions 18, 18, 19 are in contact with each other, and the contact portions 28, 28 that are convex portions also come into contact with and lubricate the counterpart rolling surface 17 on which the outer peripheral surface 6 of the outer ring 4 contacts and rolls. Accordingly, the outer ring 4 and the counterpart rolling surface 17 of the cam follower 1 are lubricated simultaneously.
[0029]
As shown in FIGS. 7A and 7B, the lubrication member 26 is lubricated with respect to the outer circumferential surface 6 of the outer ring 4 in two upper portions, both sides of the outer diameter are vertical surfaces, the lower surface is a horizontal surface. Contact portions 28, 28 that contact the contact portions 18, 18 and the counterpart rolling surface 17 are formed, and one lubrication contact portion 19 is formed on the lower surface. The lubrication contact portions 18, 18 and the lubrication contact portion The inner circumferential surface of the lubricating member 26 except 19 is a recess that forms gap portions 31 and 31 between the outer circumferential surface 6 of the outer ring 4 and serves as a reservoir for lubricating oil. As shown in FIG. 6 (A), a lubricating oil supply passage 38 is formed through the oil supply port 37 on the end face of the shaft mounting screw portion 10 to communicate with the raceway portion 8 of the shaft 7.
Incidentally, the lubrication member 26 may be a sintered resin member of the multi-porous structure, the lubricating member 26, the microparticles of the high density polyethylene resin as disclosed in JP-A-10-205534, for example, It is made of a porous sintered resin member made of an open pore made by filling a molding die with a powder having a fine particle size of 30 μm and a coarse particle size of 250 to 300 μm and pressurizing and heating. The porosity of the porous sintered resin member of the lubrication plate can be, for example, 40 to 50%. The porous sintered resin member can be lubricated by immersing the porous sintered resin member in turbine oil or the like as a lubricating oil. The porous portion is impregnated with oil, and lubricating oil can be replenished.
[0030]
The lubricating member 26 may be a solid-type lubricant, the lubricating member 26 in this case, as has been described by way of example in JP 2001-208057, as a powder resin, ultra high molecular weight polyethylene powder ( For example, Miperon (registered trademark) XM-220 manufactured by Mitsui Petrochemical Co., Ltd.) and FBK oil (turbine oil) (RO # 100) as a lubricating oil are prepared, and the ratio of both is 30:70 by weight. The resulting liquid mixture is poured into a mold, the mold is placed in an airtight box, the pressure inside the box is lowered to defoam, and the mold is heated at 150 ° C. for 10 minutes or longer to obtain a mixed solution. After solidification, the solid lubricant is removed from the mold after heat dissipation and finished to form a solid lubricant.
[0031]
8A, 8B, and 8C show a support member 27 that supports the lubricating member 26 shown in FIGS. 7A and 7B, and FIG. The support member 27 is pivotally supported on the shaft 7 by the hole 39 shown in FIG. 8A opened in the back plate 30 shown in FIG. 8, and the back plate 30 has a front surface as shown in FIGS. 8A and 8B. A bottom plate 33 is bent toward the side, and is configured so that the lubricating member 26 can be detachably mounted. Small pieces 36 are directed upward at any two locations on the front edge of the bottom plate 33. The lubricating member 26 can be stably held by the back plate 30 and the small piece 36.
[0032]
Further, a holding part 34 for holding the lubricating member 26 from above is formed on the upper part of the bent pieces 33A and 33B bent upward from both sides of the bottom plate 33, and a tip part of the holding part 34 is shown in FIG. As shown in FIG. B), a protruding piece that is close to the counterpart rolling surface 17 and that has an upper end surface positioned at a minute distance with respect to the surface 17 is bent as a scraper 35, and the rolling The surface 17 is used for dust removal.
[0033]
The shaft-equipped cam follower provided with the lubricating device shown in FIG. 9 is a modified example of the second embodiment shown in FIG. 5 and has the same basic configuration as that of the second embodiment and the same operation. The member 41 has an oval shape in the longitudinal section, and the support member 42 that holds the lubricating member 41 has a structural difference in that the member 41 has the same oval shape. Accordingly, in FIG. 9, members having the same functions and functions as those of the second embodiment will be described using the same reference numerals.
[0034]
A lubrication device 29 shown in FIG. 9 is a modification of the lubrication device 25 of the second embodiment shown in FIG. 5 and FIG. 6 (B), and lubricates by contacting the outer peripheral surface 6 of the outer ring 4. The outer ring 4 is brought into contact with the upper two contact portions 18 and 18 and the lower one contact portion 19 to perform lubrication, and is a contact portion 28 which is a lubrication surface corresponding to the counterpart rolling surface 17. , 28 are disposed on the upper surface of the upper portion, and a scraper 35 is formed on each back surface of the contact portions 28, 28 in proximity to the counterpart rolling surface. The configuration, operation, and function of the contact portions 18, 18, 19, 28, 28 and the scraper 35 are the same as those of the embodiment shown in FIG. The appearance is good, the occupied space is narrower than that of the square, and the space for mounting can be reduced.
[0035]
FIGS. 10 (A) and 10 (B) show the third embodiment and show an outline of the configuration of the roller follower 43 as a follower bearing.
In this embodiment, the cam follower 1 with a shaft of the second embodiment is replaced with a roller follower 43. Although not shown in FIG. 10, FIGS. 5 and 6 of the second embodiment are omitted. The lubrication device 25, the support member 27, and the lubrication member 26 shown in (B) are the same members as those in the second embodiment. Therefore, in the main purpose of use, function, and operation, the same members as those in the second embodiment are indicated by the same names and reference numerals, 43 is a roller follower, 44 is an outer ring, 45 is an outer ring outer peripheral surface, and 35 is a scraper. is there.
[0036]
That is, for the lubrication of the outer ring 44 of the roller follower 43 shown in FIGS. 10A and 10B, the same shape and the same action as the lubrication device 25 of the second embodiment shown in FIG. 6B are applied. .
That is, the lubrication device 25 lubricates the outer peripheral surface 45 of the outer ring 44, and the two lubrication contact portions 18, 18 at the upper part of the outer ring 44 and the one lubrication contact part 19 at the lower part make contact and lubricate. I do. Further, contact portions 28, 28 are disposed corresponding to the counterpart rolling surface 17, and lubrication is performed by contact of the contact portions 28, 28, and each contact portion 28, 28 has a back surface on each back surface. A scraper 35 is formed in the vicinity of the mating rolling surface 17. The configurations and functions of these lubrication contact portions 18, 18, 19, contact portions 28, 28 and scraper 35 are the same as those of the embodiment shown in FIGS. 5 and 6B.
Therefore, the lubricating device 25 including the lubricating member 26 is supported by the support member 27 and is supported by the shaft 46 of the roller follower 43 by the back plate 30 of the support member 27.
In the longitudinal section of the roller follower 43 shown in FIG. 10A, a raceway surface 56 for rolling the rolling element group 48 as the roller follower is formed on the inner ring 47 fitted into the shaft 46 of the roller follower 43. A raceway surface 59 is also formed on the outer ring 44 incorporated on the outer periphery of the rolling element group 48, and is supported rotatably with respect to the shaft 46 via the rolling element group 48. In FIG. 10A, reference numeral 54 denotes a cage for the rolling element group 48.
[0037]
A flange portion 60 is formed integrally with the shaft 46 at the end portion of the shaft 46 on the rolling element group 48 side, and a shaft mounting screw portion 49 is formed at the other end portion, and is drilled in the driven node 11. A shaft 46 is inserted into the hole 50 and fixed by the nut 13, and the back plate 30 of the support member 27 is pivotally supported and fastened together as shown in FIGS. 10 (A) and 10 (B).
[0038]
Reference numeral 51 denotes a side plate incorporated in the shaft 46 on both sides of the rolling element group 48 and is used for positioning in the axial direction when the outer ring 44 rolls together with the flange portion 60 formed at the end of the shaft 46.
[0039]
11, the lubricating member is a solid lubricant, the rolling of the rolling member group 48 between the outer ring 44 and inner ring 47 which rolling element group 48 are arranged in the roller follower 43 shown in FIG. 10 (A) the site, an example of an incorporated as a lubricant, is shown as a longitudinal section perpendicular to the axis of the shaft 46 corresponding to the line X-X cross-sectional position in FIG. 10 (a).
[0040]
In FIG. 11, an inner ring 47 is fitted on a shaft 46, a rolling element group 48 is arranged between the inner ring 47 and the outer ring 44, and the raceway surface on which the rolling element group 48 rolls between the inner ring 47 and the outer ring 44. 56 and 59 are formed, and the outer peripheral surface 45 of the outer ring 44 rolls along the mating rolling surface 17.
[0041]
In FIG. 11, the rolling element group 48 and the cage 54 are covered with a solid lubricant 55 between the inner ring 47 and the outer ring 44 with the rolling surface of the rolling element group 48 exposed.
[0042]
The rolling element group 48, the retainer 54, and the solid lubricant 55 are integrally assembled. The solid lubricant 55 includes the raceway surface 56 of the inner ring 47, the raceway surface 59 of the outer ring 44, the rolling element group 48, and the retainer 54. Is integrally formed with a filled structure in a gap portion between them. Needless to say, the solid lubricant 55 is not limited to the roller follower 43 but also the cam follower described above.
[0043]
When the solid lubricant 55 is used as the lubricating member, the lubricating oil that has oozed out of the solid lubricant 55 with the rotation of the rolling element group 48 is gradually supplied to the contact portion between the raceway surface and the rolling element group 48. The lubricating performance between the inner ring 47 and the outer ring 44 can be maintained over a long period of time.
Further, since the solid lubricating member 55 is formed in a shape that closes the gap between the rolling element group 48 and the cage 54 of the raceway surface 56, the solid lubricating member 55 functions as a seal that prevents the intrusion of foreign matters such as dust and the entry of a certain amount of moisture. Also play.
[0044]
【The invention's effect】
According to the first and second aspects of the present invention, a lubricating device including a lubricating member that performs lubrication by contacting at least two locations with an outer ring of a follower bearing called a cam follower with a shaft or a roller follower, and the lubrication device. The support member that abuts and supports the device toward the outer peripheral surface of the outer ring of the follower bearing is supported by the shaft of the follower bearing. lubricating oil is supplied to the lubricating unit, such as rolling by heating and seizure of the outer Wagaishu surface can satisfactorily prevent, prevent wear of the contact portion, have the effect of improving the service life, and scattering of the lubricating oil The effect of improving cleanliness can be achieved.
According to the invention described in claim 4, the contact portion is pressed by the spring effect of the support member using a material having elasticity such as a steel plate, so that a predetermined contact pressure can be applied, and the contact lubrication action is more effective. The effect of supplying a suitable lubricating oil is achieved .
[0045]
According to the invention described in claim 1 and claim 2, since the lubricating member contacts the outer ring outer peripheral surface at at least two places, there are few contact portions between the outer ring outer peripheral surface and the lubricating member as the sliding member. There is an effect that sliding resistance can be suppressed.
[0046]
According to the second aspect of the present invention, since the mounting portion of the lubricating member in the support member is positioned with respect to the outer peripheral surface of the outer ring, the contacting portion of the lubricating member is accurately positioned and fixedly contacted. Therefore, it is possible to manage the size of the contact portion, and more effectively supply the lubricating oil to the raceway surface, and there is an effect that the sliding resistance can be suppressed.
According to the invention described in claim 1, since the support is fixed by co-fastening with the shaft and has an effect that does not require processing and parts for attachment.
Furthermore , according to the invention described in claim 1 and claim 2, since a cover for forming a lubricating oil pool is not required at the outer peripheral area of the follower bearing, the shaft end, etc., the processing step is unnecessary. In addition, there are incidental effects such as the use of the shaft end such as mounting of a grease nipple and mounting of a central oil supply pipe.
[0047]
According to the third aspect of the present invention, the lubrication member is formed with a contact portion that abuts against a counterpart rolling surface on which the outer ring of the follower bearing rolls. Since the scraper is formed so as to occupy the position facing the other side rolling surface with a small distance, the lubricating member of the lubricating device also contacts the other side rolling surface, and the other side rolling surface Thus, it is possible to effectively supply the lubricating oil, and there is an effect that the sliding resistance can be reduced, and the contact portion can be prevented from being worn out.
[0048]
Furthermore, dust and the like on the rolling surface can be removed by a scraper disposed in the vicinity of the contact portion of the lubricating member that contacts the counterpart rolling surface, so that the rolling surface can be protected and the above-described effects can be further improved. There is an effect that can be achieved.
[0049]
According to the invention described in claim 3, between the outer ring outer peripheral surface of the follower bearing called a cam follower with a shaft or a roller follower and the lubricating member, two contact lubrication portions are arranged at the upper portion and at the lower portion. However, since the oil reservoir portion that is the gap portion is formed along the axial center in the portion other than the contact portion, there is a gap portion formed between the outer peripheral surface of the outer ring and the lubricating member. Thus, the sliding resistance can be reduced.
[0050]
According to the invention described in claim 5 , the lubricating member of the lubricating device is composed of the porous structure containing the lubricating oil and the sintered resin member having the porous structure capable of replenishing the lubricating oil. In addition, there is an effect that molding as a lubrication member is easy, the lubrication member can be exchanged and handling is easy, a lubricating oil supply path is unnecessary, and the structure of the follower bearing can be simplified.
[0051]
The lubricating member is a sintered resin member having a porous structure containing lubricating oil. Various lubricating oils can be selected, impregnated and used according to the use conditions of the follower bearing, and can be re-impregnated. There is also an effect that the set of follower bearings can be continuously used.
[0052]
According to the sixth aspect of the present invention, the lubricating member is a solid lubricant, and only by replacing the lubricating member, the follower bearing can be operated continuously for a long period of time. Further, the formation of the lubricating oil supply circuit can be achieved. Since it is not necessary at all, the structure of the follower bearing can be simplified and miniaturized.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment of a cam follower with a shaft as a follower bearing provided with a lubricating device.
FIG. 2 is a view showing a front surface, a longitudinal section, a side surface, and a back surface of the device shown in FIG.
FIG. 3 is a perspective view of the lubricating member shown in FIG. 1;
4 is a view showing a front surface, a back surface, and a side surface of the support member shown in FIG. 1. FIG.
FIG. 5 is a perspective view of a second embodiment of a cam follower with a shaft provided with a lubricating device.
6 is a cross-sectional view, a front view, and a side view of what is shown in FIG. 5. FIG.
7 is a view showing a front surface and a side surface of the lubricating member shown in FIG. 5. FIG.
8 is a view showing the front, side, and plane of the support member shown in FIG. 5. FIG.
FIG. 9 is a front view of another embodiment of a cam follower with a shaft provided with a lubricating device.
FIG. 10 is a sectional view and a front view of a third embodiment of a roller follower provided with a lubricating device.
11 is a longitudinal cross-sectional view corresponding to a cross-sectional position taken along line XX in FIG. 10A in an example of a roller follower to which a lubricating member that is a solid lubricant is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cam follower 2, 25 Lubricating device 3, 27 Support member 4,44 Outer ring 5,26,41 Lubricating member 6,45 Outer ring outer peripheral surface 17 Opposite rolling surface 18,19 Lubrication contact part 24,35 Scraper 28 Contact part 29 Lubrication Device 31 Gap portion 43 Roller follower 47 Inner ring 55 Solid lubricant

Claims

In a follower bearing called a cam follower with a shaft or a roller follower to which an outer ring is assembled, a lubrication device including a lubrication member that performs lubrication by contacting the outer ring of the follower bearing at least at two locations, and the lubrication device. A follower provided with a lubrication device, wherein the support member that abuts and supports the outer peripheral surface of the outer ring is supported by a shaft of a follower bearing so as to be fastened together with the follower node body and fixed. bearing.

In a follower bearing referred to as a cam follower with a shaft or a roller follower to which an outer ring is assembled, a lubrication device including a lubrication member that performs lubrication by contacting the outer ring of the follower bearing at least at two locations, and the lubrication device. A follower bearing provided with a lubricating device, wherein a support member that contacts and supports the outer peripheral surface of the outer ring is positioned and pivotally supported by a shaft of the follower bearing.

The lubrication member is formed with a contact portion that abuts against a mating rolling surface on which the outer ring of the follower bearing rolls, and a minute distance from the mating rolling surface in the vicinity of the contact portion of the supporting member of the lubrication device The follower bearing provided with the lubricating device of Claim 1 or 2 with which the scraper is formed in the position which hold | maintains and opposes.

The follower bearing provided with the lubricating device according to any one of claims 1 to 3, wherein the support member is made of an elastic material.

The follower bearing provided with the lubricating device according to any one of claims 1 to 4, wherein the lubricating member of the lubricating device is a sintered resin member having a porous structure containing lubricating oil.

The follower bearing provided with the lubricating device according to any one of claims 1 to 4, wherein the lubricating member of the lubricating device is a solid lubricant.