JP3965942B2

JP3965942B2 - Rolling bearing mounting structure

Info

Publication number: JP3965942B2
Application number: JP2001194300A
Authority: JP
Inventors: 和敬加村; 照之脇阪; 信之瀬尾; 博美川西
Original assignee: JTEKT Corp
Current assignee: JTEKT Corp
Priority date: 2001-06-27
Filing date: 2001-06-27
Publication date: 2007-08-29
Anticipated expiration: 2021-06-27
Also published as: JP2003013981A

Description

【０００１】
【発明の属する技術分野】
本発明は、転がり軸受の取付け構造に関する。
【０００２】
【従来の技術】
従来、図２２に示すような車軸用軸受（転がり軸受）５０がある。これは、車輪を取付けて、軸心５１回りに回転自在なハブホイール５２を有し、このハブホイール５２に、駆動軸に連結された等速ジョイント５３の軸部５４がスプライン嵌合により一体的に挿通されている。
【０００３】
前記ハブホイール５２を軸心５１回りに回転自在に支持するための軸受５５が設けられ、この軸受５５は、ハブホイール５２の外周面に嵌着される二列の内輪部材５６と、各内輪部材５６の外周面をそれぞれ内輪軌道面とする二個の玉５７（転動体の一例）と、これら玉５７の外輪軌道面として内周面が用いられる単一の外輪部材５８とを備え、この外輪部材５８は、車体側に設けたナックル５９の中心穴６０に圧入されている。
【０００４】
そして、このナックル５９に対して前記外輪部材５８（軸受５５）を軸心５１方向に移動規制するよう取付けるための取付け構造６１が設けられ、この取付け構造６１は、前記外輪部材５８が車両インナ側Ａに移動するのを規制するために、前記ナックル５９の車両インナ側Ａ端面を径方向内向きに突出して形成した環状のストッパ６２と、外輪部材５８が車両アウタ側Ｂに移動するのを規制するために、外輪部材５８をナックル５９に圧入した後にナックル５９の中心穴６０の車両アウタ側Ｂに形成した凹部６３に嵌着するようにした止め輪６４とから構成されている。
【０００５】
また、図２３で示すような取付け構造６１が提案されている。これは、外輪部材５８が車両インナ側Ａに移動するのを規制するために、ナックル５９の車両インナ側Ａ端面を径方向内向きに突出して形成した環状のストッパ６２を有している。また、この取付け構造６１は、前記外輪部材５８が車両アウタ側Ｂに移動するのを規制するために、次のような手段を有している。すなわちこの手段は、外輪部材５８の車両アウタ側Ｂ隅端部に、水平部６５と折曲部６６とからなる断面略Ｌ字形のスリーブ６７を嵌着し、このスリーブ６７の水平部６５の周方向所定間隔置きに弾性片６８を形成し、前記ナックル５９の中心穴６０における車両アウタ側Ｂ内周面端部に、前記弾性片６８が係止する溝６９を形成したものである。
【０００６】
このような取付け構造６１では、外輪部材５８をナックル５９の中心穴６０に挿通する際、弾性片６８が中心穴６０の端部外周面７０で押圧されて軸心５１に向けて倒れるように撓み、外輪部材５８が所定位置、すなわち外輪部材５８の端部がストッパ６２に当たるまで挿入されると、弾性片６８がその弾性力により起きて溝６９内に入り込み、溝６９壁面に弾性片６８の端面が当たって互いが係合し、これによって外輪部材５８が車両アウタ側Ｂに抜出るのを防止することができる。
【０００７】
【発明が解決しようとする課題】
ところで近年、車軸用軸受５０では、軸心５１方向への縮小化が進められているが、図２２に示した上記従来の取付け構造６１では、外輪部材５８をナックル５９に圧入後にナックル５９の中心穴６０の車両アウタ側Ｂに形成した凹部６３に嵌着する止め輪６４とを有しているので、その分だけナックル５９の車両アウタ側Ｂの長さ（図にαで示す）が必要になる。
【０００８】
また図２３で示した上記従来の取付け構造６１では、スリーブ６７の折曲部６６はその厚み分だけ外輪部材５８の端面から車両アウタ側Ｂに突出（図のβで示す）しており、また弾性片６８を倒すために中心穴６０の端部壁面７０が所定の長さ必要であるので、その分だけナックル５９の軸心５１方向の長さが大きくなっている。
【０００９】
これら従来技術のように、ナックル５９の軸心５１方向の幅を取付け構造６１のために確保しなければならないことは、設計の自由度を低下させることにつながる。
【００１０】
そこで本発明は、上記課題を解決し得る転がり軸受における取付け構造の提供を目的とする。
【００１１】
【課題を解決するための手段】
本願の請求項１に係る発明は、車軸を支持する転がり軸受の外輪部材を車両の車体側に取付けられる支持部材に形成した挿通穴に挿通して取付けるための取付け構造であって、前記支持部材の挿通穴の軸方向一側には、径方向内方に突出し外輪部材の端部に当接して外輪部材が軸心方向一方に抜出るのを防止するための抜止め片が設けられ、前記挿通穴の内周面には環状の取付け用凹部が形成され、前記外輪部材の外周面には、少なくとも軸方向の一部が前記取付け用凹部と径方向に対向する環状の係合用凹部が形成され、前記取付け用凹部と前記係合用凹部との間には、前記取付け用凹部と前記係合用凹部とに係合して前記外輪部材を前記挿通穴内に固定する抜止め部材が配置され、前記抜止め部材は、前記取付け用凹部の軸方向全幅にわたって嵌合されて軸方向に固定され、周方向の一部が切断された円筒状の本体部と、前記本体部の円周等配箇所に形成され軸心方向一方に向けて縮径するとともに径方向に弾性的に変位可能な複数の傾斜係合部と、前記本体部と前記傾斜係合部との間に、前記外輪を前記挿通穴から抜き取る際に切断される脆弱部とを備え、前記外輪部材が前記抜止め片に当接する位置まで圧入されると前記傾斜係合部が前記係合用凹部の側壁面に当接し、前記転がり軸受を前記挿通穴に挿入する途中で前記傾斜係合部が前記外輪部材の外周面に押圧されて弾性変形する際に、前記傾斜係合部を回避収納させるための収納用凹部が、前記挿通穴の内周面に形成され、前記支持部材と前記外輪部材との間に、前記抜け止め部材の傾斜係合部を弾性変形させて係合用凹部との係合を解除するリリース用リングを挿入するための環状の隙間が形成されている。
【００１２】
上記構成において、取付け用凹部に抜止め部材を装着するとその基部が取付け用凹部の支持部によって軸心方向で支持され、この状態で転がり軸受を支持部材の挿通穴に他側から挿入すると、抜止め部材の傾斜係合部が外輪部材の外周面に押圧されて撓んで収納用凹部に回避収納され、転がり軸受をその外輪部材の端部が抜止め片に当接するまで挿通穴に押し込むと、取付け用凹部と係合用凹部とが対向し、抜止め部材の傾斜係合部がその弾性力によって係合用凹部に入り、傾斜係合部の一側端部が係合用凹部の係合面に当接して互いが係合し、転がり軸受はその外輪部材が抜止め片に当接することによって軸心方向一方向に抜出るのを防止され、転がり軸受は傾斜係合部の一側端部が係合面に係合することで軸心方向他方に抜出るのを防止される。
【００１５】
本願の請求項２に係る発明は、請求項１に記載の転がり軸受において、前記脆弱部は、前記本体部と前記傾斜係合部との連続部分を円弧状又は台形状に切り欠いて薄肉部とすることにより形成されている。
本願の請求項３に係る発明は、請求項１に記載の転がり軸受において、前記脆弱部は、前記本体部と前記傾斜係合部との連続部分に段差を形成して薄肉部とすることにより形成されている。
【００１９】
【発明の実施の形態】
以下、本発明の実施の形態に係る車軸用軸受（転がり軸受）の取付け構造を、図面に基づいて説明する。なお、以下に説明する第一の実施形態から第六の実施形態のうち、第一、第四、第五、第六の実施形態は参考例である。まず、参考例の実施形態に係る取付け構造を、図１および図２に基づいて説明する。
【００２０】
この実施の形態における車軸用軸受１は、筒状で単一の外輪部材２の内方に、二列の玉３（転動体の一例）を介して軸心４回りに回転自在に支持される筒状で二列の内輪部材５と、外輪部材２と各内輪部材５との間の環状軸受空間６に配置されて各玉３を円周等配に保持するための保持器７と、前記環状軸受空間６の車両インナ側Ａおよび車両アウタ側Ｂ端部に配置されて環状軸受空間６内部に潤滑材を封入するとともに外部から泥水等が浸入するのを防止するためのシール部材８とから構成されている。
【００２１】
前記各玉３の内輪軌道面には各内輪部材５の外周面が用いられ、各玉３の外輪軌道面には外輪部材２の内周面が用いられる。
【００２２】
前記内輪部材５の内周面には、ブレーキディスクロータ９を取付けるためのハブホイール１０の胴部が圧入され、このハブホイール１０の車両アウタ側Ｂを拡径することで前記ブレーキディスクロータ９の取付け凹面９ａに当接するハブフランジ１１が形成され、このハブフランジ１１とブレーキディスクロータ９とは取付けボルト１２によって固定されている。図の符号１３は、ブレーキディスクロータ９に図示しないタイヤホイール部材を固定するためのハブボルトを示す。
【００２３】
また前記ハブホイール１０の中心穴１４には、車体側に設けた等速ジョイント１５の椀形外輪部１６に一体的に形成した軸部１７（車軸）が、スプラインＳ嵌合によって挿通され、前記軸部１７の車両アウタ側Ｂ端部にナット１８が螺着され、このナット１８の締結力により軸部１７とハブホイール１０とが軸心４方向に分離するのを防止している。
【００２４】
なお前記等速ジョイント１５として、ツェッパタイプ（バーフィールド型）と呼ばれるものが用いられており、前記椀形外輪部１６の内部に、駆動シャフト１９の端部を挿通固定した内輪部２０、前記ハブホイール１０を駆動シャフト１９に対して傾動案内するための玉２１、およびその保持器２２を備えている。
【００２５】
上記のような車軸用軸受１を車両側に取付けた支持部材（以下、ナックルという）２３に取付けるための取付け構造２４が設けられている。なおこのナックル２３には、前記車軸用軸受１を挿通するための中心穴（挿通穴）２５が形成されている。
【００２６】
前記取付け構造２４は、車軸用軸受１がナックル２３に対して車両インナ側Ａ（軸心４方向一方）に移動するのを防止するために、ナックル２３の車両インナ側Ａ端面を径方向内向きに突出して形成した環状のストッパ（抜け止め片）２６と、前記車軸用軸受１が車両アウタ側Ｂ（軸心４方向他方）に移動するのを規制するために、次のような手段を有している。
【００２７】
すなわちこの手段は、前記ナックル２３の内周面途中、すなわち中心穴２５の外周面途中に周方向に沿って形成されて径方向内側を開放した環状の取付け用凹部２７と、前記外輪部材２の外周面途中で取付け用凹部２７に対向する位置に形成されて径方向外側を開放した環状の係合用凹部２８と、前記取付け用凹部２７底面に嵌着されて車両インナ側Ａに向けて縮径する傾斜係合部２９を有した抜止め部材３０（リテーナともいう）とから構成されている。
【００２８】
前記抜止め部材３０の傾斜係合部２９は、環状の本体３１（抜止め部材３０の基部）から複数の所定箇所（例えば周方向に３０°間隔）を所定の間隔を置いて切り起こすことで円周等配箇所に形成され、これら傾斜係合部２９は例えば焼入れ加工によって、後述するような所定の弾性力が付与され、前記係合用凹部２８の車両インナ側Ａの側壁は軸心４方向に対して垂直な面（半径方向を含む面）に形成され、この側壁は傾斜係合部２９の折曲した端部が当接することで互いが係止する係合面３２として用いられ、本体３１の両側端部は、取付け用凹部２７の両側壁を支持部とすることで軸心４方向の移動を阻止された状態にある。
【００２９】
なお、前記本体３１は前述したように環状に形成されているが、本体３１の途中は軸心４方向に沿って切断されて、この切断部分を設けることで縮径あるいは拡径可能に形成されている。
【００３０】
前記取付け用凹部２７は、前記ナックル２３の中心穴２５に、車軸用軸受１を車両アウタ側Ｂから圧入する途中で、抜止め部材３０の傾斜係合部２９が外輪部材２の車両インナ側Ａ外周面に押圧されて弾性的に変形する際に、前記傾斜係合部２９を収納する収納用凹部３３に兼用されている。
【００３１】
そして図示のように、車軸用軸受１（外輪部材２）をナックル２３の中心穴２５に、車軸用軸受１の車両インナ側Ａ端部がストッパ２６に当接するまで挿入した際に、ナックル２３と車軸用軸受１のそれぞれの車両アウタ側端面２３ａ，１ａは、軸心４方向に一致した位置で同一平面内に位置する。
【００３２】
上記構成において、車軸用軸受１の中心穴１４にハブホイール１０の胴部を圧入して車軸用軸受１とハブホイール１０とを一体にしたハブユニットとし、あるいはブレーキディスクロータ９を取付けた状態のハブユニットとする。
【００３３】
そして前述のハブユニットにおける車軸用軸受１をナックル２３の中心穴２５に車両アウタ側Ｂから圧入すると、抜止め部材３０の傾斜係合部２９が外輪部材２の外周面に押圧されて弾性的に変形し、傾斜係合部２９は収納用凹部３３に回避されるように収納されてこの状態を維持する。そして、さらに車軸用軸受１をナックル２３の中心穴２５に押し込むことで、傾斜係合部２９が外輪部材２の外周面からその弾性力によって外れて、係合用凹部２８内に入り、傾斜係合部２９の端面が係合用凹部２８の係合面３２（車両インナ側Ａの側壁）に当接する。この傾斜係合部２９の端面と係合面３２との係合力によって、車軸用軸受１（ハブユニット）がナックル２３に対して車両アウタ側Ｂに抜出るのを防止できる。
【００３４】
また、傾斜係合部２９がその弾性力によって係合用凹部２８内に入るときは、車軸用軸受１の車両インナ側Ａ端面がストッパ２６に当接するのと一致し、従って、車軸用軸受１（ハブユニット）がナックル２３に対して車両インナ側Ａに抜出るのを防止している。
【００３５】
そして前述したように、車軸用軸受１（外輪部材２）をナックル２３の中心穴２５に、車軸用軸受１の車両インナ側Ａ端部がストッパ２６に当接するまで挿入した際に、ナックル２３と車軸用軸受１のそれぞれの車両アウタ側Ｂ端面は、軸心４方向に一致して径方向の同一平面内に位置する。
【００３６】
このように、第一の実施の形態によれば、ナックル２３の車両インナ側Ａ端面を径方向内向きに突出して形成した環状のストッパ２６と、ナックル２３の内周面途中に、この周方向に沿って形成した取付け用凹部２７と、外輪部材２の外周面途中で取付け用凹部２７に対向する位置に形成した係合用凹部２８と、取付け用凹部２７底面に嵌着されて車両インナ側Ａに向けて縮径する傾斜係合部２９を有した抜止め部材３０から構成された取付け構造２４により、車軸用軸受１がナックル２３から軸心４方向に抜出るのを防止することができる。
【００３７】
さらに、従来の取付け構造のように、車軸用軸受１が、車両アウタ側Ｂに抜出るのを防止するための止め輪を省略することができるので、この止め輪のためにナックル２３の幅を大きくする必要がなく、ナックル２３と車軸用軸受１のそれぞれの車両アウタ側Ｂ端面を軸心４方向に一致させて径方向の同一平面内に位置させることができるので、ナックル２３の縮小化を図ることができ、従って、設計の自由度を向上させることができる。
【００３８】
なお、前述の傾斜係合部２９に付与する所定の弾性力としては、車両に車軸用軸受１を取付けて使用した際に、車軸用軸受１にこれを車両アウタ側Ｂに移動させる力が働いた場合であっても、傾斜係合部２９の端面が係合用凹部２８の係合面３２に当接して係合した状態を維持するだけの弾性力が必要である。
【００３９】
また、メンテナンスのために車軸用軸受１をナックル２３から取外す場合は、傾斜係合部２９の所定の弾性力、すなわち傾斜係合部２９と係合面３２との係合力に抗して車両アウタ側Ｂに引抜くことで行う。このときは、傾斜係合部２９が係合用凹部２８の係合面３２を乗り越えて再び取付け用凹部２７に収納され、この状態で外輪部材２の外周面に押圧されてこれが摺動する状態となる。
【００４０】
次に、本発明の第二の実施の形態を図３ないし図６に基づいて説明する。この第二の実施の形態は、取付け構造２４における環状の取付け用凹部２７がナックル２３の車両アウタ側Ｂ内周面に形成され、この取付け用凹部２７の車両インナ側Ａに環状の収納用凹部３３が連成されている。また、図４に示すように、取付け構造２４における抜止め部材３０の傾斜係合部２９と本体３１との連続部分を円弧状に切り欠いて他の部分に比べて薄肉にして脆弱部３４としている。なお、図４は図５における中央線断面図である。
【００４１】
さらに取付け構造２４における係合用凹部２８は、外輪部材２の車両アウタ側Ｂ外周面を縮径して環状に形成している。そして係合用凹部２８の端面である係合面３２は、車両インナ側Ａに向けて拡径する傾斜面とされている。他の構成は上記第一の実施の形態と同様であるので省略する。
【００４２】
上記構成において、ナックル２３の中心穴２５に車軸用軸受１を圧入するのに先立って、傾斜係合部２９が車両インナ側Ａに向けて縮径する方向に向けて、抜止め部材３０を取付け用凹部２７に対して縮径させた状態を保持して装着し、抜止め部材３０をその弾性力によって拡径するように復元することで取付け用凹部２７に嵌合しておく。このとき本体３１の両側端部は、取付け用凹部２７の両側側壁である支持部に支持されて軸心４方向の移動を阻止された状態となる。
【００４３】
次に車軸用軸受１をナックル２３の中心穴２５に対して車両アウタ側Ｂから押し込むと、傾斜係合部２９が外輪部材２の外周面に押圧され弾性変形して収納用凹部３３に収納され、外輪部材２の端部がストッパ２６に当接した位置で傾斜係合部２９がその弾性力によって係合用凹部２８に入り、傾斜係合部２９の端面が係合面３２に当接して係合し、車軸用軸受１が車両アウタ側Ｂに抜出るのを防止する。
【００４４】
本発明の第二の実施の形態によれば、従来の取付け構造のように、車軸用軸受１が車両アウタ側Ｂに抜出るのを防止するための止め輪を省略することができ、従って、この止め輪のためにナックル２３の幅を大きくする必要がなく、ナックル２３と車軸用軸受１のそれぞれの車両アウタ側Ｂ端面を軸心４方向に一致させて径方向の同一平面内に位置させることができるので、ナックル２３の縮小化を図ることができ、従って、設計の自由度を向上させることができる。他の作用効果は上記第一の実施の形態と同様であるので省略する。
【００４５】
また、メンテナンスのために車軸用軸受１をナックル２３から取外す場合は、第一の実施の形態のように、傾斜係合部２９の所定の弾性力に抗して車両アウタ側Ｂに引抜き、脆弱部３４で破壊させるようにする。あるいは図６に示すように、例えばリリース用リング３５を用いることによって行うこともできる。すなわち、リリース用リング３５をナックル２３と外輪部材２の間の隙間に、リリース用リング３５の先端部が傾斜係合部２９に当たるまで押し込む。続いて、図の仮想線で示すような圧入用治具３６を、予めハブフランジ１１に形成した押圧用穴に車両アウタ側Ｂから挿入し、図示しない押圧装置によって圧入用治具３６をさらに押し込む。そして圧入用治具３６が押し込まれることで傾斜係合部２９が弾性変形して、傾斜係合部２９の端面が係合面３２から離脱して双方の係合状態が解除され、傾斜係合部２９が収納用凹部３３に収納される。このようにして傾斜係合部２９の端部と係合面３２との係合を解除した状態で車軸用軸受１をナックル２３から引抜く。
【００４６】
このようにすることにより、抜止め部材３０を破壊することなく、またナックル２３に車軸用軸受１を圧入した力と同等の大きさで反対向きの力だけで、ナックル２３から車軸用軸受１を取外すことができる。
【００４７】
この第二の実施の形態では、取付け構造２４における抜止め部材３０の傾斜係合部２９と本体３１との連続部分を円弧状に切り欠いて他の部分に比べて薄肉にして脆弱部３４としたが、図７に示すように、抜止め部材３０の傾斜係合部２９と本体３１との連続部分を段差を形成するよう切り欠いて他の部分に比べて薄肉の脆弱部３４としてもよい。
【００４８】
次に、図８ないし図１２に基づいて、本発明の第三の実施の形態を説明する。まず、この第三の実施の形態が第二の実施の形態と異なるところは、抜止め部材３０の形状と取付け用凹部２７の形状である。すなわち、図８に示すように、抜止め部材３０は、本体３１に対して肉薄の脆弱部３４を介して傾斜係合部２９が形成されたものである。
【００４９】
この抜止め部材３０は、脆弱部３４に台形の切欠き溝３０ａを形成し、この脆弱部３４を軸心４に対して所定の角度で折り曲げることにより形成する。なお、傾斜係合部２９は本体３１に所定の間隔を置いて円周等配位置に形成されている。なお、前記本体３１は環状に形成されているが、本体３１の途中は軸心４方向に沿って切断されて、この切断部分を設けることで縮径あるいは拡径可能に形成されている。
【００５０】
図１１は上記抜止め部材３０を取付け用凹部２７に装着した状態であり、この取付け用凹部２７は車両アウタ側Ｂに、本体３１の端面を確実に取付け用凹部２７の側壁である支持部に支持させるために径方向外向きの凹部２７ａを形成している。
【００５１】
図１２はナックル２３から車軸用軸受１を取外す際の過程を示している。車軸用軸受１を傾斜係合部２９の弾性力に抗して引抜くことにより、抜止め部材３０が脆弱部３４で切断され、傾斜係合部２９が車軸用軸受１とともに引き抜かれ、本体３１が取付け用凹部２７に残る。なお、取付け用凹部２７に残った本体３１は、これは所定の工具によって縮径するようにして取外す。なお、次に車軸用軸受１をナックル２３に装着する場合は、予め取付け用凹部２７に新たな抜止め部材３０を装着しておく。
【００５２】
次に、図１３および図１４に基づいて参考例としての第四の実施の形態を説明する。第四の実施の形態に係る取付け構造２４は、ナックル２３の車両アウタ側Ｂ端部（軸心４方向一方）にストッパ２６が形成され、抜止め部材３０が、環状の本体３１と、この本体３１の車両インナ側Ａ（軸心４方向他方）を径方向内向きに折曲して形成した連続部分の先端に、車両アウタ側Ｂに向けて縮径するようにして形成した傾斜係合部２９とから構成されている。なお、前記本体３１は、前述したように環状に形成されているが、本体３１の途中は軸心４方向に沿って切断されて、この切断部分を設けることで縮径あるいは拡径可能に形成され、前記傾斜係合部２９は、本体３１の周方向に所定間隔置きに形成されている。
【００５３】
前記抜止め部材３０を取付けるための取付け用凹部２７は、ナックル２３の車両インナ側Ａ内周面に形成され、係合用凹部２８は、外輪部材２の車両インナ側Ａ内周面を他の部分に比べて縮径するよう加工することで形成され、係合面３２が車両アウタ側Ｂに拡径する傾斜面とされている。そして取付け用凹部２７は、前記ナックル２３の中心穴２５に、車軸用軸受１を車両アウタ側Ｂから圧入する途中で、抜止め部材３０の傾斜係合部２９が外輪部材２の車両インナ側Ａ外周面に押圧されて弾性的に変形する際に、前記傾斜係合部２９を収納する収納用凹部３３に兼用されている。他の部分の構成は上記第一の実施の形態と同様であるので省略する。
【００５４】
上記構成において、ナックル２３に車軸用軸受１を取付けるにあたり予め抜止め部材３０を取付け用凹部２７に装着しておく。そして、車軸用軸受１をナックル２３の中心穴２５に車両インナ側Ａから挿入すると、外輪部材２の外周面に傾斜係合部２９が押圧されて収納用凹部３３に収納され、外輪部材２の車両アウタ側Ｂ端部がストッパ２６に当接した位置で傾斜係合部２９が係合用凹部２８の係合面３２に係合し、これによって車軸用軸受１が軸心４方向に移動するのを防止できる。
【００５５】
なお、車軸用軸受１をナックル２３から取外す際には、等速ジョイント１５の椀形外輪部１６に形成した軸部１７を取外し、ハブホイール１０を取外した後、第二の実施の形態のようにリリース用リング３５を用いて抜止め部材３０の傾斜係合部２９を収納用凹部３３に押し上げたり、あるいは図１４で示すように、車軸用軸受１を車両インナ側Ａに無理抜きすることで抜止め部材３０と傾斜係合部２９を切断するようにする。
【００５６】
次に、図１５および図１６に基づいて参考例としての第五の実施の形態を説明する。これは、取付け構造２４に、車軸用軸受１を車両アウタ側Ｂへ移動するのを阻止するためにナックル２３の車両アウタ側Ｂに形成したストッパ２６を有しており、車軸用軸受１を車両インナ側Ａへ移動するのを阻止するために前記ストッパ２６に隣接してナックル２３の中心穴２５に練成した係合用凹部２８と、車軸用軸受１をナックル２３に装着した状態で外輪部材２の外周面上において係合用凹部２８の対向位置に形成された取付け用凹部２７と、この取付け用凹部２７に取付けられる抜止め部材３０とを有している。
【００５７】
そしてこの抜止め部材３０は、取付け用凹部２７の支持部としての両側壁に当接して軸心４方向の移動を阻止される環状の本体３１と、この本体３１に一体的に形成されて車両インナ側Ａに向けて拡径するよう傾斜する環状の傾斜係合部２９とから形成されている。
【００５８】
前記本体３１は前述したように環状に形成されているが、その途中は軸心４方向に沿って切断されて、この切断部分を設けることで縮径あるいは拡径可能に形成されている。
【００５９】
前記取付け用凹部２７は、前記ナックル２３の中心穴２５に、車軸用軸受１を車両アウタ側Ｂから圧入する途中で、抜止め部材３０の傾斜係合部２９が外輪部材２の車両インナ側Ａ外周面に押圧されて弾性的に変形する際に、前記傾斜係合部２９を収納する収納用凹部３３に兼用されている。他の部分の構成は上記第一の実施の形態と同様であるのでその説明を省略する。
【００６０】
上記構成において、抜止め部材３０を取付け用凹部２７の装着した状態で、車軸用軸受（あるいはハブユニット）１をナックル２３の中心穴２５に車両インナ側Ａから挿入すると、傾斜係合部２９がナックル２３の内周面に押圧されて収納用凹部３３に収納され、車軸用軸受１を押し込む途中では傾斜係合部２９はナックル２３の内周面に摺動し、車軸用軸受１の端部がストッパ２６に当接した時点で傾斜係合部２９はその弾性力により係合用凹部２８に入り、傾斜係合部２９の端面が係合用凹部２８の係合面３２に係合し、これにより車軸用軸受１が軸心４方向に移動するのを防止することができる。
【００６１】
その後、車軸用軸受１の内輪部材５にハブホイール１０を車両アウタ側Ａから圧入し、ハブフランジ１１にブレーキディスクロータ９を取付け、またハブホイール１０の中心穴１４に等速ジョイント１５の軸部１７を車両インナ側ＡからスプラインＳ嵌合し、これをナット１８で締付ける。これにより、ナックル２３、車軸用軸受１、ハブホイール１０、ブレーキディスクロータ９が一体化する。
【００６２】
なお、ナックル２３から車軸用軸受１を取外す際には、ナット１８を緩めて等速ジョイント１５の軸部１７を取外し、ハブホイール１０を車両アウタ側Ｂに無理抜きする。その後、傾斜係合部２９の端面と係合用凹部２８の係合面３２との係合力に抗して車軸用軸受１を車両インナ側Ａに無理抜きして、傾斜係合部２９を切断することで車軸用軸受１をナックル２３から取外す。また、傾斜係合部２９と本体３１との連続部分に脆弱部を形成しておくことにより、無理抜きによる所定の力によって車軸用軸受１をナックル２３から取外すよう構成してもよい。
【００６３】
次に図１７および図１８に基づいて、参考例としての第六の実施の形態を説明する。これは、取付け構造２４に、車軸用軸受１を車両インナ側Ａ（軸心４方向一方）へ移動するのを阻止するためにナックル２３に形成したストッパ２６を有しており、車軸用軸受１を車両アウタ側Ｂへ移動するのを阻止するために、ナックル２３に装着した状態で外輪部材２の外周面上の、取付け用凹部２７の対向位置に係合用凹部２８が形成され、図１８に示すように、抜止め部材３０は、車両インナ側Ａに縮径するように形成した環状の本体３１（基部）と、この基部の延長上に形成されて本体３１と同一の傾斜を有するとともに、円周方向に所定角度置きに形成された傾斜係合部２９とから冠形に形成されている。
【００６４】
前記本体３１は取付け用凹部２７の車両アウタ側Ｂ隅部に形成した環状溝２７ａに装着され、前記係合用凹部２８の係合面３２は車両インナ側Ａに拡径する傾斜面とされている。
【００６５】
なお、前記本体３１は前述したように環状に形成されているが、本体３１の途中は軸心４方向に沿って切断されて、この切断部分を設けることで縮径あるいは拡径可能に形成されている。
【００６６】
また、前記取付け用凹部２７は、前記ナックル２３の中心穴２５に、車軸用軸受１を車両アウタ側Ｂから圧入する途中で、抜止め部材３０の傾斜係合部２９が外輪部材２の車両インナ側Ａ外周面に押圧されて弾性的に変形する際に、前記傾斜係合部２９を収納する収納用凹部３３に兼用されている。他の部分の構成は上記第一の実施の形態と同様であるので省略する。
【００６７】
上記構成において、車軸用軸受１（あるいはハブユニット）をナックル２３の中心穴２５に車両インナ側Ａから挿入すると、傾斜係合部２９が外輪部材２の外周面に押圧されて収納用凹部３３に収納され、車軸用軸受１を押し込む途中では傾斜係合部２９は外輪部材２の外周面に摺動し、車軸用軸受１の端部がストッパ２６に当接した時点で傾斜係合部２９はその弾性力により係合用凹部２８に入り、傾斜係合部２９の端面が係合用凹部２８の係合面３２に係合する。これにより車軸用軸受１が車両アウタ側Ｂに移動するのを防止する。その後、ハブホイール１０の中心穴２５に等速ジョイント１５の軸部１７をスプラインＳ嵌合し、これをナット１８で締付ける。
【００６８】
なお、ナックル２３から車軸用軸受１を取外す際には、ナット１８を緩めて等速ジョイント１５の軸部１７を取外し、車軸用軸受１を傾斜係合部２９の端面と係合用凹部２８の係合面３２との係合力に抗して車両アウタ側Ｂに無理抜きするようにすると、傾斜係合部２９の端面が係合用凹部２８の係合面３２に沿って押し上げられて収納用凹部３３に収納され、車軸用軸受１の引き抜き途中では、傾斜係合部２９は外輪部材２の外周面に摺動する。なお、傾斜係合部２９と本体３１との連続部分に脆弱部を形成しておくことにより、無理抜きにによる所定の力によって脆弱部を切断するようにして車軸用軸受１をナックル２３から取外すよう構成してもよい。
【００６９】
図１９ないし図２１は抜止め部材３０の別の実施の形態を示し、これは、抜止め部材３０に車速センサ３７を支持するための支持体３８を一体的に形成したものである。図示した例では、本体３１から支持体３８の首部３９を折り曲げるようにして、把持部４０、すなわち車速センサ３７を取付ける部分を丸めるようにして形成する。
【００７０】
また図では、ストッパ２６は車両インナ側Ａに形成され、取付け用凹部２７はナックル２３の中心穴２５の車両アウタ側Ｂに形成され、係合用凹部２８は外輪部材２の車両アウタ側Ｂ端部に、外輪部材２を縮径するように形成されている。そして、外輪部材２には環状の取付けアングル４１が固定されて、この取付けアングル４１における車速センサ３７の検出部の対向位置に、図示しないパルサリングが設けられている。なお抜止め部材３０の、支持体３８以外の形状は、上記第二の実施の形態と同様であるのでその説明を省略する。
【００７１】
【発明の効果】
以上の説明から明らかな通り、本願請求項１に係る発明は、転がり軸受を支持部材に取り付けるために、支持部材の挿通穴の軸方向一側には、径方向内方に突出し外輪部材の端部に当接して外輪部材が軸心方向一方に抜出るのを防止するための抜止め片が設けられ、挿通穴の内周面には環状の取付け用凹部が形成され、外輪部材の外周面には、少なくとも軸方向の一部が取付け用凹部と径方向に対向する環状の係合用凹部が形成され、取付け用凹部と係合用凹部との間には、外輪が抜止め片に当接した状態で、取付け用凹部と係合用凹部とに係合して外輪部材を挿通穴内に固定する抜止め部材が配置され、抜止め部材は、取付け用凹部に係合し、周方向の一部が切断された環状の本体部と、本体部の円周等配箇所に形成され係合用凹部に係合するよう軸心方向一方に向けて縮径する弾性を有した複数の傾斜係合部とを備えたので、転がり軸受は、その外輪部材が抜止め片に当接することによって軸心方向一方向に抜出るのを防止され、転がり軸受は傾斜係合部の一側端部が係合面に係合することで軸心方向他法に抜出るのを防止され、従って、従来の取付け構造のように、転がり軸受が軸心方向に抜出るのを防止するための止め輪を省略することができるので、この止め輪のために支持部材の幅を大きくする必要がなく、支持部材の縮小化を図ることができ、もって設計の自由度を向上させることができる。
【図面の簡単な説明】
【図１】参考例としての第一の実施の形態を示す取付け構造の全体縦断面図である。
【図２】同じく部分拡大縦断面図である。
【図３】本発明に係る実施の形態である第二の実施の形態を示す取付け構造の部分拡大縦断面図である。
【図４】同じく抜止め部材の拡大縦断面図である。
【図５】同じく抜止め部材の正面図である。
【図６】同じくナックルから車軸用軸受を取外す際の過程を示す部分拡大縦断面図である。
【図７】抜止め部材の別の実施の形態を示す縦断面図である。
【図８】本発明に係る実施の形態である第三の実施の形態を示す縦断面図である。
【図９】同じく抜止め部材の正面図である。
【図１０】同じく抜止め部材の要部拡大縦断面図である。
【図１１】同じく抜止め部材を取付け用凹部に装着した状態の要部拡大縦断面図である。
【図１２】同じくナックルから車軸用軸受を取外す際の過程を示す部分拡大縦断面図である。
【図１３】参考例としての第四の実施の形態を示す取付け構造の全体縦断面図である。
【図１４】同じくナックルから車軸用軸受を取外す際の過程を示す部分拡大縦断面図である。
【図１５】参考例としての第五の実施の形態を示す取付け構造の全体縦断面図である。
【図１６】同じくナックルから車軸用軸受を取外す際の過程を示す部分拡大縦断面図である。
【図１７】参考例としての第六の実施の形態を示す取付け構造の全体縦断面図である。
【図１８】同じく取付け用凹部に抜止め部材を装着した状態の部分拡大縦断面図である。
【図１９】別の実施の形態を示す取付け構造の部分拡大縦断面図である。
【図２０】同じく抜止め部材の加工前の単体正面図である。
【図２１】同じく抜止め部材の加工後の単体斜視図である。
【図２２】従来例を示す車軸用軸受の取付け構造の全体断面図である。
【図２３】別の従来例を示す車軸用軸受の取付け構造の部分拡大断面図である。
【符号の説明】
１車軸用軸受
２外輪部材
４軸心
５内輪部材
９ブレーキディスクロータ
１０ハブホイール
１４ハブホイールの中心穴
１５等速ジョイント
２３ナックル
２４取付け構造
２５ナックルの中心穴
２６ストッパ
２７取付け用凹部
２８係合用凹部
２９傾斜係合部
３０抜止め部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting structure for a rolling bearing.
[0002]
[Prior art]
Conventionally, there is an axle bearing (rolling bearing) 50 as shown in FIG. This has a hub wheel 52 attached to a wheel and rotatable around an axis 51, and a shaft portion 54 of a constant velocity joint 53 connected to a drive shaft is integrated with the hub wheel 52 by spline fitting. Is inserted.
[0003]
A bearing 55 for rotatably supporting the hub wheel 52 around the shaft center 51 is provided. The bearing 55 includes two rows of inner ring members 56 fitted to the outer peripheral surface of the hub wheel 52, and each inner ring member. The outer ring 56 includes two balls 57 (an example of rolling elements) each having an inner ring raceway surface, and a single outer ring member 58 in which the inner circumference surface is used as the outer ring raceway surface of the balls 57. The member 58 is press-fitted into a center hole 60 of a knuckle 59 provided on the vehicle body side.
[0004]
An attachment structure 61 is provided for attaching the outer ring member 58 (bearing 55) to the knuckle 59 so as to restrict the movement of the outer ring member 58 (bearing 55) in the direction of the shaft center 51. The attachment structure 61 includes the outer ring member 58 on the vehicle inner side. In order to restrict movement to A, the annular stopper 62 formed by projecting the vehicle inner side A end surface of the knuckle 59 radially inward, and the outer ring member 58 from moving to the vehicle outer side B are regulated. For this purpose, the outer ring member 58 is configured to include a retaining ring 64 that is fitted into a recess 63 formed on the vehicle outer side B of the center hole 60 of the knuckle 59 after the outer ring member 58 is press-fitted into the knuckle 59.
[0005]
Further, a mounting structure 61 as shown in FIG. 23 has been proposed. This has an annular stopper 62 formed by protruding the vehicle inner side A end surface of the knuckle 59 radially inward in order to restrict the movement of the outer ring member 58 to the vehicle inner side A. The mounting structure 61 includes the following means for restricting the outer ring member 58 from moving to the vehicle outer side B. That is, this means is that a sleeve 67 having a substantially L-shaped cross section composed of a horizontal portion 65 and a bent portion 66 is fitted to a corner portion of the outer ring member 58 on the vehicle outer side B, and the periphery of the horizontal portion 65 of the sleeve 67 is fitted. Elastic pieces 68 are formed at predetermined intervals in the direction, and a groove 69 that is engaged with the elastic piece 68 is formed at the inner peripheral surface end of the vehicle outer side B in the center hole 60 of the knuckle 59.
[0006]
In such an attachment structure 61, when the outer ring member 58 is inserted into the center hole 60 of the knuckle 59, the elastic piece 68 is pressed by the outer peripheral surface 70 at the end of the center hole 60 so as to bend toward the axis 51. When the outer ring member 58 is inserted at a predetermined position, that is, until the end of the outer ring member 58 hits the stopper 62, the elastic piece 68 is raised by the elastic force and enters the groove 69, and the end surface of the elastic piece 68 enters the wall surface of the groove 69. And the outer ring member 58 can be prevented from being pulled out to the vehicle outer side B.
[0007]
[Problems to be solved by the invention]
Incidentally, in recent years, the axle bearing 50 has been reduced in the direction of the axis 51, but in the conventional mounting structure 61 shown in FIG. 22, the outer ring member 58 is pressed into the knuckle 59 and then the center of the knuckle 59 is pressed. Since there is a retaining ring 64 that fits into the recess 63 formed on the vehicle outer side B of the hole 60, the length of the knuckle 59 on the vehicle outer side B (indicated by α in the drawing) is required. Become.
[0008]
In the conventional mounting structure 61 shown in FIG. 23, the bent portion 66 of the sleeve 67 protrudes from the end face of the outer ring member 58 toward the vehicle outer side B by the thickness (indicated by β in the figure). Since the end wall surface 70 of the center hole 60 needs to have a predetermined length in order to tilt the elastic piece 68, the length of the knuckle 59 in the direction of the axis 51 is increased accordingly.
[0009]
Like these prior arts, the width of the knuckle 59 in the direction of the axis 51 must be secured for the mounting structure 61, which leads to a reduction in the degree of design freedom.
[0010]
Then, this invention aims at provision of the attachment structure in the rolling bearing which can solve the said subject.
[0011]
[Means for Solving the Problems]
  The invention according to claim 1 of the present application isSupport the axleThe outer ring member of the rolling bearingInstalled on the vehicle body sideAn attachment structure for inserting and attaching to an insertion hole formed in the support member, wherein one side of the insertion hole of the support member in the axial direction protrudes inward in the radial direction and contacts the end of the outer ring member. A retaining piece for preventing the member from being pulled out in one axial direction is provided, an annular mounting recess is formed on the inner circumferential surface of the insertion hole, and at least the outer circumferential surface of the outer ring member is An annular engagement recess is formed in which a part in the axial direction is opposed to the mounting recess in the radial direction, and between the mounting recess and the engagement recess.BeforeA retaining member that engages with the mounting recess and the engaging recess and fixes the outer ring member in the insertion hole is disposed, and the retaining member is the mounting recess.Are fitted over the full axial width of the, Part of the circumferential direction was cutCylinderShaped body part and the circumferentially equidistant place of the body partAxisReduce diameter toward one directionAnd elastically displaceable in the radial directionA plurality of inclined engaging portions;A fragile portion that is cut when the outer ring is removed from the insertion hole between the main body portion and the inclined engagement portion, and is press-fitted to a position where the outer ring member contacts the retaining piece. And the inclined engaging portion abuts against the side wall surface of the engaging recess, and the inclined engaging portion is pressed against the outer peripheral surface of the outer ring member and elastically deformed while the rolling bearing is being inserted into the insertion hole. And a recess for storing the tilt engaging portion is formed in an inner peripheral surface of the insertion hole, and the tilt engaging portion of the retaining member is interposed between the support member and the outer ring member. An annular gap is formed for inserting a release ring that is elastically deformed to release the engagement with the engagement recess.
[0012]
In the above configuration, when the retaining member is mounted in the mounting recess, the base portion is supported in the axial direction by the supporting portion of the mounting recess, and in this state, when the rolling bearing is inserted into the insertion hole of the supporting member from the other side, the base is removed. When the inclined engaging portion of the stop member is pressed against the outer peripheral surface of the outer ring member and bent to be avoided and stored in the recess for storage, and the rolling bearing is pushed into the insertion hole until the end of the outer ring member abuts the retaining piece, The mounting recessed portion and the engaging recessed portion face each other, and the inclined engaging portion of the retaining member enters the engaging recessed portion by its elastic force, and one side end portion of the inclined engaging portion contacts the engaging surface of the engaging recessed portion. The rolling bearing is prevented from being pulled out in one axial direction by the outer ring member coming into contact with the retaining piece, and the rolling bearing is engaged at one end of the inclined engaging portion. Prevents pulling out to the other axial direction by engaging the mating surface It is.
[0015]
  The invention according to claim 2 of the present application is the rolling bearing according to claim 1, wherein the weakened portion is formed by cutting out a continuous portion of the main body portion and the inclined engaging portion into an arc shape or a trapezoidal shape, and a thin-walled portion. It is formed by.
  The invention according to claim 3 of the present application is the rolling bearing according to claim 1, wherein the fragile portion is formed as a thin portion by forming a step in a continuous portion between the main body portion and the inclined engagement portion. Is formed.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
  DESCRIPTION OF EMBODIMENTS Hereinafter, an axle bearing (rolling bearing) mounting structure according to an embodiment of the present invention will be described with reference to the drawings.Of the first to sixth embodiments described below, the first, fourth, fifth, and sixth embodiments are reference examples.First,Reference exampleA mounting structure according to the embodiment will be described with reference to FIGS. 1 and 2.
[0020]
The axle bearing 1 in this embodiment is supported in a cylindrical shape on the inner side of a single outer ring member 2 so as to be rotatable around an axis 4 via two rows of balls 3 (an example of a rolling element). A cylindrical, two-row inner ring member 5, a cage 7 disposed in an annular bearing space 6 between the outer ring member 2 and each inner ring member 5 to hold the balls 3 in a circumferentially uniform manner, The seal member 8 is disposed at the vehicle inner side A and the vehicle outer side B ends of the annular bearing space 6 so as to enclose a lubricant in the annular bearing space 6 and to prevent intrusion of muddy water and the like from the outside. It is configured.
[0021]
The outer peripheral surface of each inner ring member 5 is used for the inner ring raceway surface of each ball 3, and the inner peripheral surface of the outer ring member 2 is used for the outer ring raceway surface of each ball 3.
[0022]
A body portion of a hub wheel 10 for mounting the brake disc rotor 9 is press-fitted into the inner peripheral surface of the inner ring member 5, and the vehicle outer side B of the hub wheel 10 is expanded in diameter so that the brake disc rotor 9 A hub flange 11 that abuts the mounting concave surface 9 a is formed, and the hub flange 11 and the brake disc rotor 9 are fixed by mounting bolts 12. Reference numeral 13 in the drawing denotes a hub bolt for fixing a tire wheel member (not shown) to the brake disc rotor 9.
[0023]
Further, a shaft portion 17 (axle) formed integrally with a saddle-shaped outer ring portion 16 of a constant velocity joint 15 provided on the vehicle body side is inserted into the center hole 14 of the hub wheel 10 by spline S fitting, A nut 18 is screwed onto the vehicle outer side B end portion of the shaft portion 17, and the shaft portion 17 and the hub wheel 10 are prevented from being separated in the direction of the shaft center 4 by the fastening force of the nut 18.
[0024]
As the constant velocity joint 15, a so-called Rzeppa type (Burfield type) is used, and an inner ring portion 20 in which an end portion of a drive shaft 19 is inserted and fixed inside the saddle-shaped outer ring portion 16, the hub wheel A ball 21 for tilting and guiding 10 with respect to the drive shaft 19 and its retainer 22 are provided.
[0025]
An attachment structure 24 for attaching the axle bearing 1 as described above to a support member (hereinafter referred to as a knuckle) 23 attached to the vehicle side is provided. The knuckle 23 is formed with a center hole (insertion hole) 25 through which the axle bearing 1 is inserted.
[0026]
In order to prevent the axle bearing 1 from moving to the vehicle inner side A (one of the four directions of the shaft center) with respect to the knuckle 23, the mounting structure 24 has the vehicle inner side A end surface of the knuckle 23 radially inward. In order to restrict the movement of the annular bearing (projection retaining piece) 26 projecting to the vehicle outer side B (the other in the direction of the axis 4), the following means are provided. is doing.
[0027]
That is, this means includes an annular mounting recess 27 formed along the circumferential direction in the middle of the inner peripheral surface of the knuckle 23, that is, in the middle of the outer peripheral surface of the center hole 25, and the outer ring member 2. An annular engagement recess 28 formed at a position opposite to the mounting recess 27 in the middle of the outer peripheral surface and opened radially outward, and fitted to the bottom surface of the mounting recess 27 and reduced in diameter toward the vehicle inner side A. It is comprised from the retaining member 30 (it is also called a retainer) which has the inclination engaging part 29 to do.
[0028]
The inclined engaging portion 29 of the retaining member 30 is formed by cutting a plurality of predetermined locations (for example, 30 ° intervals in the circumferential direction) from the annular main body 31 (base portion of the retaining member 30) at predetermined intervals. These inclined engagement portions 29 are formed at circumferentially equidistant locations, and given elastic force as will be described later is applied by, for example, quenching, and the side wall on the vehicle inner side A of the engagement recess 28 is in the direction of the axis 4. The side wall is used as an engagement surface 32 that locks each other when the bent ends of the inclined engagement portion 29 come into contact with each other. Both side end portions of 31 are in a state in which movement in the direction of the axis 4 is prevented by using both side walls of the mounting recess 27 as support portions.
[0029]
Although the main body 31 is formed in an annular shape as described above, the middle of the main body 31 is cut along the direction of the axis 4 so that the diameter can be reduced or increased by providing this cut portion. ing.
[0030]
The mounting recess 27 is configured so that the inclined engagement portion 29 of the retaining member 30 is inserted into the center hole 25 of the knuckle 23 from the vehicle outer side B while the inclined engagement portion 29 of the retaining member 30 is on the vehicle inner side A of the outer ring member 2. When pressed against the outer peripheral surface and elastically deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29.
[0031]
As shown in the figure, when the axle bearing 1 (outer ring member 2) is inserted into the center hole 25 of the knuckle 23 until the vehicle inner side A end of the axle bearing 1 contacts the stopper 26, the knuckle 23 and The vehicle outer side end faces 23a, 1a of the axle shaft bearing 1 are located in the same plane at positions that coincide with the direction of the axis 4.
[0032]
In the above configuration, the body of the hub wheel 10 is press-fitted into the center hole 14 of the axle bearing 1 to form a hub unit in which the axle bearing 1 and the hub wheel 10 are integrated, or the brake disk rotor 9 is attached. A hub unit is used.
[0033]
When the axle bearing 1 in the hub unit described above is press-fitted into the center hole 25 of the knuckle 23 from the vehicle outer side B, the inclined engaging portion 29 of the retaining member 30 is pressed against the outer peripheral surface of the outer ring member 2 to be elastic. As a result of the deformation, the inclined engaging portion 29 is accommodated so as to be avoided by the accommodating recess 33 and maintains this state. Further, when the axle bearing 1 is pushed into the center hole 25 of the knuckle 23, the inclined engaging portion 29 is detached from the outer peripheral surface of the outer ring member 2 by its elastic force and enters the engaging concave portion 28 to be inclined engaged. The end surface of the portion 29 comes into contact with the engagement surface 32 (the side wall on the vehicle inner side A) of the engagement recess 28. The engagement force between the end surface of the inclined engagement portion 29 and the engagement surface 32 can prevent the axle bearing 1 (hub unit) from being pulled out to the vehicle outer side B with respect to the knuckle 23.
[0034]
Further, when the inclined engagement portion 29 enters the engagement recess 28 by its elastic force, it coincides with the vehicle inner side A end surface of the axle bearing 1 being in contact with the stopper 26, and accordingly, the axle bearing 1 ( The hub unit) is prevented from being pulled out from the knuckle 23 to the vehicle inner side A.
[0035]
As described above, when the axle bearing 1 (outer ring member 2) is inserted into the center hole 25 of the knuckle 23 until the vehicle inner side A end of the axle bearing 1 contacts the stopper 26, the knuckle 23 and Each vehicle outer side B end surface of the axle bearing 1 is positioned in the same plane in the radial direction so as to coincide with the direction of the axis 4.
[0036]
Thus, according to the first embodiment, the annular stopper 26 formed by projecting the vehicle inner side A end surface of the knuckle 23 inward in the radial direction, and the circumferential direction in the middle of the inner peripheral surface of the knuckle 23. , An engagement recess 28 formed at a position facing the mounting recess 27 in the middle of the outer peripheral surface of the outer ring member 2, and a vehicle inner side A. The axle bearing 1 can be prevented from being pulled out from the knuckle 23 in the direction of the shaft center 4 by the mounting structure 24 constituted by the retaining member 30 having the inclined engaging portion 29 whose diameter decreases toward the center.
[0037]
Further, as in the conventional mounting structure, since the retaining ring for preventing the axle bearing 1 from being pulled out to the vehicle outer side B can be omitted, the width of the knuckle 23 is reduced for this retaining ring. The knuckle 23 and the axle bearing 1 can be positioned in the same radial plane by aligning the vehicle outer side B end surfaces of the knuckle 23 and the axle bearing 1 with each other in the radial plane. Therefore, the degree of freedom in design can be improved.
[0038]
The predetermined elastic force applied to the inclined engaging portion 29 is a force that moves the axle bearing 1 to the vehicle outer side B when the axle bearing 1 is attached to the vehicle and used. Even if it is a case, the elastic force which only maintains the state which the end surface of the inclination engagement part 29 contact | abutted and engaged with the engagement surface 32 of the recessed part 28 for engagement is required.
[0039]
When the axle bearing 1 is removed from the knuckle 23 for maintenance, the vehicle outer is resisted against a predetermined elastic force of the inclined engaging portion 29, that is, the engaging force between the inclined engaging portion 29 and the engaging surface 32. By pulling to side B. At this time, the inclined engagement portion 29 gets over the engagement surface 32 of the engagement recess 28 and is again accommodated in the attachment recess 27, and in this state is pressed against the outer peripheral surface of the outer ring member 2 and slides. Become.
[0040]
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, an annular mounting recess 27 in the mounting structure 24 is formed on the inner peripheral surface of the vehicle outer side B of the knuckle 23, and an annular storage recess is formed on the vehicle inner side A of the mounting recess 27. 33 are coupled. Further, as shown in FIG. 4, a continuous portion between the inclined engagement portion 29 of the retaining member 30 and the main body 31 in the mounting structure 24 is cut out in an arc shape so as to be thinner than the other portions, thereby forming a fragile portion 34. Yes. 4 is a sectional view taken along the center line in FIG.
[0041]
Further, the engaging recess 28 in the mounting structure 24 is formed in an annular shape by reducing the diameter of the outer circumferential surface B of the outer ring member 2 on the vehicle outer side. An engagement surface 32 that is an end surface of the engagement recess 28 is an inclined surface that increases in diameter toward the vehicle inner side A. Other configurations are the same as those in the first embodiment, and are omitted.
[0042]
In the above configuration, before the axle bearing 1 is press-fitted into the center hole 25 of the knuckle 23, the retaining member 30 is attached so that the inclined engaging portion 29 is reduced in diameter toward the vehicle inner side A. The recessed portion 27 for mounting is held while being reduced in diameter, and the retaining member 30 is restored to be expanded by its elastic force so as to be fitted into the mounting recessed portion 27. At this time, both end portions of the main body 31 are supported by support portions which are both side walls of the mounting recess 27 and are prevented from moving in the direction of the axis 4.
[0043]
Next, when the axle bearing 1 is pushed into the center hole 25 of the knuckle 23 from the vehicle outer side B, the inclined engagement portion 29 is pressed against the outer peripheral surface of the outer ring member 2 and elastically deformed and stored in the storage recess 33. At the position where the end of the outer ring member 2 comes into contact with the stopper 26, the inclined engaging portion 29 enters the engaging recess 28 by its elastic force, and the end surface of the inclined engaging portion 29 comes into contact with the engaging surface 32 and engages. This prevents the axle bearing 1 from being pulled out to the vehicle outer side B.
[0044]
According to the second embodiment of the present invention, the retaining ring for preventing the axle bearing 1 from being pulled out to the vehicle outer side B can be omitted as in the conventional mounting structure. Because of this retaining ring, it is not necessary to increase the width of the knuckle 23, and the vehicle outer side B end surfaces of the knuckle 23 and the axle bearing 1 are aligned in the direction of the axial center 4 and positioned in the same radial plane. Therefore, the knuckle 23 can be reduced in size, and thus the degree of freedom in design can be improved. Other functions and effects are the same as those in the first embodiment, and are omitted.
[0045]
Further, when the axle bearing 1 is removed from the knuckle 23 for maintenance, it is pulled out to the vehicle outer side B against the predetermined elastic force of the inclined engaging portion 29 as in the first embodiment, and is fragile. The part 34 is destroyed. Or as shown in FIG. 6, it can also carry out by using the ring 35 for a release, for example. That is, the release ring 35 is pushed into the gap between the knuckle 23 and the outer ring member 2 until the tip of the release ring 35 contacts the inclined engagement portion 29. Subsequently, a press-fitting jig 36 as indicated by a virtual line in the drawing is inserted from the vehicle outer side B into a pressing hole formed in the hub flange 11 in advance, and the press-fitting jig 36 is further pushed by a pressing device (not shown). . Then, when the press-fitting jig 36 is pushed in, the inclined engaging portion 29 is elastically deformed, the end surface of the inclined engaging portion 29 is detached from the engaging surface 32, the both engagement states are released, and the inclined engaging portion is released. The portion 29 is housed in the housing recess 33. In this way, the axle bearing 1 is pulled out from the knuckle 23 in a state where the engagement between the end portion of the inclined engagement portion 29 and the engagement surface 32 is released.
[0046]
By doing so, the axle bearing 1 can be removed from the knuckle 23 without destroying the retaining member 30 and with a force equivalent to the force in which the axle bearing 1 is press-fitted into the knuckle 23 in the opposite direction. Can be removed.
[0047]
In this second embodiment, the continuous portion of the attachment member 24 between the inclined engaging portion 29 of the retaining member 30 and the main body 31 is cut out in an arc shape so as to be thinner than the other portions, and the fragile portion 34 and However, as shown in FIG. 7, a continuous portion between the inclined engagement portion 29 of the retaining member 30 and the main body 31 may be cut out to form a step so that the weakened portion 34 is thinner than the other portions. .
[0048]
Next, based on FIG. 8 thru | or FIG. 12, 3rd embodiment of this invention is described. First, the difference between the third embodiment and the second embodiment is the shape of the retaining member 30 and the shape of the mounting recess 27. That is, as shown in FIG. 8, the retaining member 30 is formed by forming an inclined engaging portion 29 via a thin weak portion 34 with respect to the main body 31.
[0049]
The retaining member 30 is formed by forming a trapezoidal notch groove 30 a in the fragile portion 34 and bending the fragile portion 34 at a predetermined angle with respect to the axis 4. The inclined engagement portions 29 are formed at equal circumferential positions with a predetermined interval from the main body 31. Although the main body 31 is formed in an annular shape, the middle of the main body 31 is cut along the direction of the axial center 4 so that the diameter can be reduced or increased by providing this cut portion.
[0050]
FIG. 11 shows a state in which the retaining member 30 is mounted in the mounting recess 27. The mounting recess 27 is on the vehicle outer side B, and the end surface of the main body 31 is securely attached to the support portion that is the side wall of the mounting recess 27. A radially outward recess 27a is formed for support.
[0051]
FIG. 12 shows a process for removing the axle bearing 1 from the knuckle 23. By pulling out the axle bearing 1 against the elastic force of the inclined engaging portion 29, the retaining member 30 is cut by the fragile portion 34, and the inclined engaging portion 29 is pulled out together with the axle bearing 1, and the main body 31. Remains in the mounting recess 27. The main body 31 remaining in the mounting recess 27 is removed so as to reduce its diameter with a predetermined tool. When the axle bearing 1 is next mounted on the knuckle 23, a new retaining member 30 is mounted in the mounting recess 27 in advance.
[0052]
  Next, based on FIG. 13 and FIG.As a reference exampleA fourth embodiment will be described.FirstIn the mounting structure 24 according to the fourth embodiment, a stopper 26 is formed on the vehicle outer side B end portion (one direction in the axial center 4 direction) of the knuckle 23, and a retaining member 30 includes an annular main body 31 and the main body 31. An inclined engagement portion 29 formed so as to be reduced in diameter toward the vehicle outer side B at the tip of a continuous portion formed by bending the vehicle inner side A (the other of the four axial centers) inward in the radial direction. It consists of and. Although the main body 31 is formed in an annular shape as described above, the middle of the main body 31 is cut along the direction of the axis 4 so that the diameter can be reduced or increased by providing this cut portion. The inclined engaging portions 29 are formed at predetermined intervals in the circumferential direction of the main body 31.
[0053]
A mounting recess 27 for mounting the retaining member 30 is formed on the inner surface of the vehicle inner side A of the knuckle 23, and the engaging recess 28 is formed on the inner surface of the outer side member 2 on the inner side of the vehicle inner side A. The engagement surface 32 is formed as an inclined surface that is expanded in diameter toward the vehicle outer side B. The mounting recess 27 is formed so that the inclined engagement portion 29 of the retaining member 30 is fitted to the vehicle inner side A of the outer ring member 2 while the axle bearing 1 is press-fitted into the center hole 25 of the knuckle 23 from the vehicle outer side B. When pressed against the outer peripheral surface and elastically deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29. Since the configuration of other parts is the same as that of the first embodiment, a description thereof will be omitted.
[0054]
In the above configuration, when attaching the axle bearing 1 to the knuckle 23, the retaining member 30 is mounted in the mounting recess 27 in advance. When the axle bearing 1 is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A, the inclined engagement portion 29 is pressed against the outer peripheral surface of the outer ring member 2 and is stored in the storage recess 33. The inclined engagement portion 29 is engaged with the engagement surface 32 of the engagement recess 28 at the position where the vehicle outer side B end is in contact with the stopper 26, whereby the axle bearing 1 moves in the direction of the axis 4. Can be prevented.
[0055]
When the axle bearing 1 is removed from the knuckle 23, the shaft portion 17 formed on the saddle-shaped outer ring portion 16 of the constant velocity joint 15 is removed, the hub wheel 10 is removed, and then, as in the second embodiment. By using the release ring 35 to push up the inclined engaging portion 29 of the retaining member 30 into the housing recess 33 or forcibly removing the axle bearing 1 to the vehicle inner side A as shown in FIG. The retaining member 30 and the inclined engagement portion 29 are cut off.
[0056]
  Next, based on FIG. 15 and FIG.As a reference exampleA fifth embodiment will be described. The mounting structure 24 has a stopper 26 formed on the vehicle outer side B of the knuckle 23 to prevent the axle bearing 1 from moving to the vehicle outer side B. An engagement recess 28 kneaded in the central hole 25 of the knuckle 23 adjacent to the stopper 26 and the axle bearing 1 in the state where the axle bearing 1 is mounted on the knuckle 23 in order to prevent movement to the inner side A. The mounting recess 27 is formed on the outer peripheral surface of the mounting recess 27 at a position opposite to the engaging recess 28, and the retaining member 30 is attached to the mounting recess 27.
[0057]
The retaining member 30 is formed integrally with the annular body 31 that is in contact with both side walls as the support portions of the mounting recess 27 and is prevented from moving in the direction of the shaft center 4. It is formed from an annular inclined engaging portion 29 that is inclined so as to increase in diameter toward the inner side A.
[0058]
The main body 31 is formed in an annular shape as described above, but is cut along the direction of the axis 4 in the middle of the main body 31 so that the diameter can be reduced or increased by providing this cut portion.
[0059]
The mounting recess 27 is configured so that the inclined engagement portion 29 of the retaining member 30 is inserted into the center hole 25 of the knuckle 23 from the vehicle outer side B while the inclined engagement portion 29 of the retaining member 30 is on the vehicle inner side A of the outer ring member 2. When pressed against the outer peripheral surface and elastically deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29. Since the configuration of other parts is the same as that of the first embodiment, description thereof is omitted.
[0060]
In the above configuration, when the axle bearing (or hub unit) 1 is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A with the retaining member 30 mounted in the mounting recess 27, the inclined engaging portion 29 is The inclined engaging portion 29 slides on the inner peripheral surface of the knuckle 23 while being pushed by the inner peripheral surface of the knuckle 23 and stored in the storage recess 33, and the axle bearing 1 is being pushed in. The slant engagement portion 29 enters the engagement recess 28 by the elastic force at the point of time when it comes into contact with the stopper 26, andEnd faceIs engaged with the engaging surface 32 of the engaging recess 28, whereby the axle bearing 1 can be prevented from moving in the direction of the axis 4.
[0061]
Thereafter, the hub wheel 10 is press-fitted into the inner ring member 5 of the axle bearing 1 from the vehicle outer side A, the brake disc rotor 9 is attached to the hub flange 11, and the shaft portion of the constant velocity joint 15 is inserted into the center hole 14 of the hub wheel 10. 17 is fitted with a spline S from the vehicle inner side A, and this is tightened with a nut 18. Thereby, the knuckle 23, the axle bearing 1, the hub wheel 10, and the brake disc rotor 9 are integrated.
[0062]
When removing the axle bearing 1 from the knuckle 23, the nut 18 is loosened, the shaft portion 17 of the constant velocity joint 15 is removed, and the hub wheel 10 is forcibly removed to the vehicle outer side B. After that, the axle bearing 1 is forcibly removed to the vehicle inner side A against the engaging force between the end surface of the inclined engaging portion 29 and the engaging surface 32 of the engaging recess 28, and the inclined engaging portion 29 is cut. Thus, the axle bearing 1 is removed from the knuckle 23. Moreover, you may comprise so that the axle bearing 1 may be removed from the knuckle 23 by the predetermined force by forcibly removing by forming a weak part in the continuous part of the inclination engaging part 29 and the main body 31. FIG.
[0063]
  Next, based on FIG. 17 and FIG.As a reference exampleA sixth embodiment will be described. The mounting structure 24 has a stopper 26 formed on the knuckle 23 to prevent the axle bearing 1 from moving to the vehicle inner side A (one direction in the axis 4). 18 is formed on the outer peripheral surface of the outer ring member 2 at a position opposite to the mounting recess 27 in the state where it is attached to the knuckle 23, and is shown in FIG. As shown, the retaining member 30 has an annular main body 31 (base portion) formed so as to be reduced in diameter toward the vehicle inner side A, and is formed on the extension of the base portion and has the same inclination as the main body 31. It is formed in a crown shape from the inclined engaging portions 29 formed at predetermined angles in the circumferential direction.
[0064]
The main body 31 is mounted in an annular groove 27a formed at the corner B of the vehicle outer side of the mounting recess 27, and the engagement surface 32 of the engagement recess 28 is an inclined surface that expands toward the vehicle inner side A. .
[0065]
Although the main body 31 is formed in an annular shape as described above, the middle of the main body 31 is cut along the direction of the axis 4 so that the diameter can be reduced or increased by providing this cut portion. ing.
[0066]
In addition, the mounting recess 27 is configured so that the inclined engagement portion 29 of the retaining member 30 is connected to the vehicle inner of the outer ring member 2 while the axle bearing 1 is press-fitted into the center hole 25 of the knuckle 23 from the vehicle outer side B. When the side A outer peripheral surface is pressed and elastically deformed, it is also used as a storage recess 33 for storing the inclined engagement portion 29. Since the configuration of other parts is the same as that of the first embodiment, a description thereof will be omitted.
[0067]
In the above configuration, when the axle bearing 1 (or the hub unit) is inserted into the center hole 25 of the knuckle 23 from the vehicle inner side A, the inclined engaging portion 29 is pressed against the outer peripheral surface of the outer ring member 2 to the housing recess 33. The inclined engaging portion 29 slides on the outer peripheral surface of the outer ring member 2 while the axle bearing 1 is being pushed in, and when the end of the axle bearing 1 contacts the stopper 26, the inclined engaging portion 29 is The elastic force enters the engagement recess 28, and the end surface of the inclined engagement portion 29 engages with the engagement surface 32 of the engagement recess 28. This prevents the axle bearing 1 from moving to the vehicle outer side B. Thereafter, the shaft portion 17 of the constant velocity joint 15 is fitted into the center hole 25 of the hub wheel 10 by the spline S, and this is tightened by the nut 18.
[0068]
When removing the axle bearing 1 from the knuckle 23, the nut 18 is loosened to remove the shaft portion 17 of the constant velocity joint 15, and the axle bearing 1 is engaged with the end face of the inclined engaging portion 29 and the engaging recess 28. When the vehicle outer side B is forcibly removed against the engagement force with the mating surface 32, the end surface of the inclined engagement portion 29 is pushed up along the engagement surface 32 of the engagement recess 28 to be stored in the storage recess 33. In the middle of pulling out the axle bearing 1, the inclined engagement portion 29 slides on the outer peripheral surface of the outer ring member 2. In addition, by forming a weak part in the continuous part of the inclined engaging part 29 and the main body 31, the axle bearing 1 is removed from the knuckle 23 so as to cut the weak part with a predetermined force by force. You may comprise.
[0069]
FIGS. 19 to 21 show another embodiment of the retaining member 30, which is formed by integrally forming a support body 38 for supporting the vehicle speed sensor 37 on the retaining member 30. In the illustrated example, the neck portion 39 of the support body 38 is bent from the main body 31, and the grip portion 40, that is, the portion to which the vehicle speed sensor 37 is attached is rounded.
[0070]
Also, in the drawing, the stopper 26 is formed on the vehicle inner side A, the mounting recess 27 is formed on the vehicle outer side B of the center hole 25 of the knuckle 23, and the engagement recess 28 is the vehicle outer side B end portion of the outer ring member 2. Further, the outer ring member 2 is formed to have a reduced diameter. An annular mounting angle 41 is fixed to the outer ring member 2, and a pulsar ring (not shown) is provided at a position facing the detection portion of the vehicle speed sensor 37 in the mounting angle 41. Since the shape of the retaining member 30 other than the support 38 is the same as that of the second embodiment, the description thereof is omitted.
[0071]
【The invention's effect】
  As is clear from the above explanation,According to claim 1 of the present applicationIn order to attach the rolling bearing to the support member, the inventionOn one side in the axial direction of the insertion hole of the support member, a retaining piece for projecting radially inward and contacting the end of the outer ring member to prevent the outer ring member from being pulled out in one axial direction is provided. An annular mounting recess is formed on the inner peripheral surface of the insertion hole, and an annular engaging recess is formed on the outer peripheral surface of the outer ring member so that at least a portion in the axial direction faces the mounting recess in the radial direction. A retaining member between the mounting recess and the engaging recess for securing the outer ring member in the insertion hole by engaging the mounting recess and the engaging recess with the outer ring in contact with the retaining piece. And the retaining member engages with the mounting recess, and is formed at the circumferentially equidistant portion of the main body with an annular main body part that is partially cut off in the circumferential direction. And a plurality of inclined engaging portions having elasticity to reduce the diameter toward one side in the axial direction.Therefore, the rolling bearing is prevented from being pulled out in one axial direction by the outer ring member coming into contact with the retaining piece, and one end of the inclined engaging portion is engaged with the engaging surface in the rolling bearing. As a result, the retaining ring for preventing the rolling bearing from being pulled out in the axial direction as in the conventional mounting structure can be omitted. Because of this retaining ring, it is not necessary to increase the width of the support member, the support member can be reduced, and the degree of design freedom can be improved.
[Brief description of the drawings]
[Figure 1]As a reference exampleIt is a whole longitudinal cross-sectional view of the attachment structure which shows 1st embodiment.
FIG. 2 is a partially enlarged longitudinal sectional view of the same.
FIG. 3 shows the present invention.It is an embodiment according toMounting showing the second embodimentConstructionFIG.
FIG. 4 is an enlarged vertical sectional view of the retaining member.
FIG. 5 is a front view of the retaining member.
FIG. 6 is a partially enlarged longitudinal sectional view showing a process when removing the axle bearing from the knuckle.
FIG. 7 is a longitudinal sectional view showing another embodiment of the retaining member.
FIG. 8 shows the present invention.It is an embodiment according toIt is a longitudinal cross-sectional view which shows 3rd embodiment.
FIG. 9 is a front view of the retaining member.
FIG. 10 is an enlarged longitudinal sectional view of a main part of the retaining member.
FIG. 11 is an enlarged vertical cross-sectional view of the main part in a state where the retaining member is similarly mounted in the mounting recess.
FIG. 12 is a partially enlarged longitudinal sectional view showing a process when removing the axle bearing from the knuckle.
FIG. 13As a reference exampleIt is a whole longitudinal cross-sectional view of the attachment structure which shows 4th Embodiment.
FIG. 14 is a partially enlarged longitudinal sectional view showing a process when removing the axle bearing from the knuckle.
FIG. 15 is an overall longitudinal sectional view of an attachment structure showing a fifth embodiment as a reference example;
FIG. 16 is a partially enlarged longitudinal sectional view showing a process when removing the axle bearing from the knuckle.
FIG. 17As a reference exampleIt is a whole longitudinal cross-sectional view of the attachment structure which shows 6th Embodiment.
FIG. 18 is a partially enlarged longitudinal sectional view showing a state in which a retaining member is mounted on the mounting recess.
FIG. 19 is a partially enlarged longitudinal sectional view of a mounting structure showing another embodiment.
FIG. 20 is a single front view of the same retaining member before processing.
FIG. 21 is a perspective view of a single member after processing of the retaining member.
FIG. 22 is an overall cross-sectional view of an axle bearing mounting structure showing a conventional example.
FIG. 23 is a partial enlarged cross-sectional view of an axle bearing mounting structure showing another conventional example.
[Explanation of symbols]
    1 Axle bearing
    2 Outer ring member
    4 axis
    5 Inner ring member
    9 Brake disc rotor
    10 Hub wheel
    14 Hub wheel center hole
    15 Constant velocity joint
    23 Knuckles
    24 Mounting structure
    25 knuckle center hole
    26 Stopper
    27 Recess for mounting
    28 Recess for engagement
    29 Inclined engagement part
    30 retaining member

Claims

A mounting structure for inserting and attaching an outer ring member of a rolling bearing that supports an axle through an insertion hole formed in a support member attached to the vehicle body side of the vehicle ,
On one side in the axial direction of the insertion hole of the support member, a retaining piece for projecting radially inward and contacting the end of the outer ring member to prevent the outer ring member from being pulled out in one axial direction is provided. And
An annular mounting recess is formed on the inner peripheral surface of the insertion hole,
On the outer peripheral surface of the outer ring member, an annular engagement recess is formed in which at least a part in the axial direction faces the mounting recess in the radial direction,
Wherein between the mounting recesses and the engagement recess, retaining member for fixing the outer ring member in the insertion bore engaged with the front Symbol mounting recess and the engaging recesses are arranged,
The retaining member includes a cylindrical main body portion that is fitted over the entire axial width of the mounting recess and is fixed in the axial direction, and a circumferential portion of the main body portion is equally spaced. The outer ring is formed between a plurality of inclined engaging portions formed in the axial direction and having a diameter reduced toward one axial direction and elastically displaceable in the radial direction, and between the main body portion and the inclined engaging portion. With a fragile part that is cut when it is extracted from the insertion hole,
When the outer ring member is press-fitted to a position where it comes into contact with the retaining piece, the inclined engaging portion comes into contact with the side wall surface of the engaging recess,
A storage recess for avoiding and storing the inclined engaging portion when the inclined engaging portion is pressed against the outer peripheral surface of the outer ring member and elastically deformed while the rolling bearing is inserted into the insertion hole, Formed on the inner peripheral surface of the insertion hole,
An annular gap is formed between the support member and the outer ring member for inserting a release ring that elastically deforms the inclined engagement portion of the retaining member and releases the engagement with the engagement recess. mounting structure of a rolling bearing in which, the features.

The fragile portion of claim 1, characterized in that, being formed by a thin portion of the continuous portion cut away in an arc-shaped or trapezoidal and the main body portion and the inclined engaging portion Mounting structure for rolling bearings.

The rolling bearing according to claim 1 , wherein the fragile portion is formed by forming a step in a continuous portion between the main body portion and the inclined engagement portion to form a thin portion. Construction.