JP2003130074A - Rotary support device for wheel - Google Patents

Rotary support device for wheel

Info

Publication number
JP2003130074A
JP2003130074A JP2001332015A JP2001332015A JP2003130074A JP 2003130074 A JP2003130074 A JP 2003130074A JP 2001332015 A JP2001332015 A JP 2001332015A JP 2001332015 A JP2001332015 A JP 2001332015A JP 2003130074 A JP2003130074 A JP 2003130074A
Authority
JP
Japan
Prior art keywords
ring
peripheral surface
support hole
wheel
knuckle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001332015A
Other languages
Japanese (ja)
Inventor
Hiroo Ishikawa
寛朗 石川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP2001332015A priority Critical patent/JP2003130074A/en
Publication of JP2003130074A publication Critical patent/JP2003130074A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067Fixing them in a housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting
    • F16C2326/01Parts of vehicles in general
    • F16C2326/02Wheel hubs or castors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To facilitate the assembly work and miniaturize and lighten the rotary support device and sufficiently secure the durability. SOLUTION: An outside engaging groove 39 is formed over the whole periphery at the inside peripheral face of a support hole 32 provided in a knuckle 30. In a state that an outside ring 3a is inserted in a support hole 32, a notched circular snap ring 37 made of an elastic material is hung on the inside engaging groove 38 formed over the whole periphery and the outside engaging groove 39 at the outer peripheral face of the outside ring 3a. The snap ring 37 is made of a material treated by anti-corrosive processing on the surface of a metallic wire material, having excellent corrosion resistance such as stainless steel or the surface of a metallic wire material having no sufficient anti-corrosive property such as piano wires.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】この発明は、車輪を支持する
為の車輪用軸受ユニットと、自動車の独立懸架式サスペ
ンションの一部を構成する支持部材とを組み合わせて、
懸架装置に対して車輪を回転自在に支持する為の車輪用
回転支持装置の改良に関する。 【0002】 【従来の技術】車輪を懸架装置に対して回転自在に支持
する為に、外輪と内輪とを転動体を介して回転自在に組
み合わせた車輪用軸受ユニットが、各種使用されてい
る。又、懸架装置の一種である独立懸架式サスペンショ
ンに対して、車輪を回転自在に支持する為に、この独立
懸架式サスペンションの一部を構成するナックルに設け
た支持孔に、上記車輪用軸受ユニットを構成する外輪の
一部を内嵌して、この外輪と上記支持部材とを複数のボ
ルトにより結合した車輪用回転支持装置も、従来から広
く使用されている。図11は、この様な車輪用回転支持
装置のうち、独立懸架式サスペンションに駆動輪を支持
すると共に、この駆動輪を回転駆動する為の車輪駆動用
の車輪用軸受ユニット1と、懸架装置を構成するナック
ル30とを組み合わせた車輪用回転支持装置の、一般的
な構造を示している。 【0003】このうちの車輪用軸受ユニット1は、外輪
3の内径側にハブ4及び内輪5を、複数の転動体6、6
を介して回転自在に支持して成る。このうちの外輪3
は、その外周面に設けた第一の取付フランジ7により、
懸架装置の一部を構成する支持部材である、ナックル3
0に結合固定した状態で、使用時にも回転しない。即
ち、上記車輪用軸受ユニット1の使用時には、上記外輪
3の軸方向内端(軸方向に関して内とは、自動車への組
み付け状態で車両の幅方向中央側となる側で、図3、5
を除く各図の右側。本明細書全体で同じ。)部外周面に
設けた円筒面状の嵌合部31を上記ナックル30に設け
た支持孔32に内嵌する。そして、この状態で、上記ナ
ックル30に設けた複数の通孔33にボルト34を挿通
させ、これら各ボルト34の雄ねじ部を、上記第一の取
付フランジ7に設けたねじ孔35に螺合・緊締する事に
より、上記車輪用軸受ユニット1を上記ナックル30に
対し結合している。又、上記外輪3の内周面には1対の
外輪軌道8、8を設けて、この外輪3の内径側に、それ
ぞれが回転部材36を構成する、ハブ4及び内輪5を、
上記外輪3と同心に、回転自在に支持している。 【0004】このうちのハブ4は、外周面の軸方向外端
(軸方向に関して外とは、自動車への組み付け状態で車
両の幅方向外側となる側で、図3、5を除く各図の左
側。本明細書全体で同じ。)寄り部分に、車輪を支持す
る為の第二の取付フランジ9を設けている。又、上記ハ
ブ4の外周面の中間部に第一の内輪軌道10を形成し、
同じく軸方向内端部に形成した小径段部11に、その外
周面に第二の内輪軌道12を形成した上記内輪5を外嵌
固定している。又、上記ハブ4の中心部には、スプライ
ン孔13を設けている。 【0005】一方、前記車輪用軸受ユニット1には等速
ジョイント2を組み合わせている。この等速ジョイント
2は、等速ジョイント用外輪14と、等速ジョイント用
内輪15と、複数のボール16、16と、スプライン軸
17とを備える。このうちの等速ジョイント用外輪14
とスプライン軸17とが、駆動軸部材18を構成する。
即ち、このスプライン軸17はこの駆動軸部材18の軸
方向外半部に設けたもので、上記スプライン孔13と係
合自在であり、上記等速ジョイント用外輪14は、上記
駆動軸部材18の軸方向内半部に設けている。この等速
ジョイント用外輪14の内周面の円周方向複数個所には
外側係合溝19、19を、それぞれこの円周方向に対し
直角方向に形成している。又、上記等速ジョイント用内
輪15は、中心部に第二のスプライン孔20を、その外
周面で上記各外側係合溝19、19と整合する部分に内
側係合溝21、21を、それぞれ円周方向に対し直角方
向に形成している。そして、これら各内側係合溝21、
21と上記各外側係合溝19、19との間に上記各ボー
ル16、16を、保持器22により保持した状態で、こ
れら各係合溝21、19に沿う転動自在に設けている。 【0006】上述の様な等速ジョイント2と前述の様な
車輪用軸受ユニット1とを組み合わせるには、上記スプ
ライン軸17を上記ハブ4のスプライン孔13に、軸方
向に関して内側から外側に向け挿通する。そして、上記
スプライン軸17の軸方向外端部で上記ハブ4の外端面
から突出した部分に設けた雄ねじ部23にナット24を
螺合し、更に緊締する事により、互いに結合固定する。
この状態で、前記内輪5の内端面は上記等速ジョイント
用外輪14の外端面に当接するので、この内輪5が前記
小径段部11から抜け出る方向に変位する事はない。同
時に、前記各転動体6、6に適正な予圧が付与される。 【0007】更に、自動車の懸架装置への組み付け状態
では、前記等速ジョイント用内輪15の中心部に設けた
第二のスプライン孔20に、駆動軸25の軸方向外端部
に設けた雄スプライン部26をスプライン係合させる。
そして、この雄スプライン部26の軸方向外端部外周面
に全周に亙って形成した係止溝27に係止した止め輪2
8を、上記第二のスプライン孔20の軸方向外端開口周
縁部に形成した係止段部29に係合させて、上記雄スプ
ライン部26が上記第二のスプライン孔20から抜け出
る事を防止する。尚、上記駆動軸25の軸方向内端部
は、図示しないデファレンシャルギヤの出力軸部に設け
た、やはり図示しないトリポード型等速ジョイントのト
ラニオンの中心部に結合固定する。従って、自動車の走
行時に上記駆動軸25は、等速回転する。 【0008】又、米国特許明細書第5,927,867
号には、車輪用軸受ユニットを構成する外輪の外周面
を、(ナックルに固定する為の取付フランジを形成しな
い)単なる円筒面とすると共に、上記外輪とナックルと
を環状部材により結合した構造が記載されている。この
環状部材は、断面略L字形で全体を円環状に形成してい
る。又、この環状部材を構成する筒部の円周方向一部に
突起部を、この筒部の外周面から傾斜して突出する状態
で形成している。又、上記ナックルの支持孔の軸方向一
端部内周面に溝部を形成している。そして、この支持孔
に上記外輪を挿入すると共に、この支持孔の軸方向他端
部内周面に設けた内向鍔部の側面に上記外輪の軸方向他
端面を突き当てている。そして、この外輪の軸方向一端
部外周面に環状部材を外嵌すると共に、上記突起部の先
端を、上記溝部の両側面のうちで軸方向他側に向いた側
面に突き当てている。この為、上記外輪は、上記支持孔
の内側から抜け出る方向に変位する事が阻止される。 【0009】又、特開2001−105806号公報に
は、ナックルと、車輪用軸受ユニットを構成する外輪と
を、弾性材製で有端形状のクリップにより結合した構造
が記載されている。この様な従来構造の第3例の場合、
ナックルの支持孔の内周面の周方向に形成された外側係
合溝と、外輪の外周面の周方向に形成された内側係合溝
とを備える。そして、上記外輪を上記ナックルに結合す
る際に、上記クリップを上記内側係合溝に装着すると共
に、このクリップの直径を弾性的に縮めた状態で、上記
支持孔に上記外輪を、このクリップごと挿入する。この
挿入作業に伴い、上記クリップが上記外側係合溝に整合
した状態で、このクリップの直径が弾性復帰する為、こ
のクリップが上記外側係合溝と内側係合溝との間に掛け
渡された状態になる。この状態で、上記外輪は、上記支
持孔から抜け出る方向に変位する事が阻止される。 【0010】 【発明が解決しようとする課題】前述した米国特許明細
書第5,927,867号に記載された従来構造の第2
例、及び、上述した特開2001−105806号公報
に記載された従来構造の第3例の何れの場合も、1個の
環状部材やクリップのみで、外輪をナックルに結合固定
している為、複数本のボルトを省略できる事により、組
立作業の容易化と、小型化・軽量化とを図れる。但し、
車輪用回転支持装置は、雨水や融雪塩等、錆びが発生す
る原因となる異物が付着し易い状態で使用される。この
為、上記環状部材やクリップが、上記異物により早期に
錆び付く可能性がある。上記従来構造の第2、3例の何
れの場合も、この様な錆び付きを防止する為の考慮をし
ていない。この様に、上記環状部材やクリップが錆び付
いた場合には、これら各部材の強度が低下する為、比較
的小さい衝撃荷重によりこれら各部材が破損して、外輪
が支持孔から抜け出る方向に変位する事を、長期間に亙
り防止できなくなる可能性がある。本発明の車輪用回転
支持装置は、この様な事情に鑑みて、組立作業の容易化
によるコスト低減と、小型化・軽量化とを図れ、しか
も、耐久性を十分に確保できる構造を実現すべく発明し
たものである。 【0011】 【課題を解決するための手段】本発明の車輪用回転支持
装置は、前述の図11に示した従来構造の第1例と同様
に、懸架装置を構成して車輪を支持する支持部材と、こ
の支持部材に設けられた支持孔の内径側に支持された車
輪用軸受ユニットとを備える。そして、このうちの車輪
用軸受ユニットは、内周面に外輪軌道を、外周面に上記
支持孔に内嵌する為の嵌合部を、それぞれ有し、使用時
にも回転しない外輪と、外周面の一端寄り部分に車輪を
支持する為の取付フランジを、同じく中間部に上記外輪
軌道と対向する内輪軌道を、それぞれ有し、使用時に回
転する回転部材と、この内輪軌道と上記外輪軌道との間
に転動自在に設けられた複数個の転動体とを備える。 【0012】特に、本発明の車輪用回転支持装置に於い
ては、上記支持孔の内周面と上記嵌合部の外周面との間
に設けられて、上記支持部材に対する上記外輪の軸方向
の変位を阻止する係合部材を備える。そして、この係合
部材が、耐食性を有する材料製、又は表面に防食処理を
施した材料製である。 【0013】 【作用】上述の様に構成する本発明の車輪用回転支持装
置によれば、支持部材に車輪用軸受ユニットを結合する
のに複数本のボルトを使用する必要がなくなる。この
為、組立作業の容易化によるコスト低減と、小型化・軽
量化とを図れる。しかも、雨水や融雪塩等、錆びが発生
する原因となる異物が付着し易い状態で使用される場合
でも、係合部材の強度を長期間に亙り十分に確保でき
る。この為、外輪が支持部材の支持孔から抜け出る方向
に変位するのを長期間に亙り防止して、耐久性を十分に
確保できる。 【0014】 【発明の実施の形態】図1〜3は、本発明の実施の形態
の第1例を示している。尚、本発明の特徴は、組立作業
の容易化と小型・軽量化とを図ると共に、耐久性を十分
に確保すべく、外輪3aと、支持部材であるナックル3
0との結合部の構造を工夫した点にある。本例に於い
て、その他の部分の構造は、前述の図11に示した従来
構造の第1例とほぼ同様であるから、重複する説明を省
略若しくは簡略にし、以下、本発明の特徴部分並びに上
記従来構造と異なる部分を中心に説明する。 【0015】本発明の車輪用回転支持装置は、懸架装置
を構成して車輪を支持する支持部材である、ナックル3
0と、このナックル30に設けた支持孔32の内径側に
支持した車輪用軸受ユニット1aとを備える。この車輪
用軸受ユニット1aは、外輪3aの内径側にハブ4及び
1対の内輪5a、5bを回転自在に支持している。そし
て、これら1対の内輪5a、5bのうち、軸方向内側の
内輪5bの内端面を、等速ジョイント2を構成する等速
ジョイント用外輪14の外端面に突き当てている。又、
上記各内輪5a、5bの外周面に、第一の内輪軌道10
と第二の内輪軌道12とを形成している。本例の場合に
は、これら1対の内輪5a、5bと上記ハブ4とが、回
転部材36aを構成している。そして、上記外輪3aの
内周面に上記各内輪軌道10、12に対向する状態で形
成した1対の外輪軌道8、8と、上記各内輪軌道10、
12との間に、それぞれ複数ずつの転動体6、6を転動
自在に設ける事により、上記外輪3aの内径側に上記ハ
ブ4a及び1対の内輪5a、5bを回転自在に支持して
いる。 【0016】特に、本例の車輪用回転支持装置の場合に
は、前記ナックル30に設けた支持孔32の内周面と、
前記車輪用軸受ユニット1aを構成する外輪3aの外周
面との間に掛け渡した止め輪37により、上記ナックル
30と車輪用軸受ユニット1aとの分離を防止してい
る。即ち、本例の場合、上記外輪3aの外周面を、(上
記ナックル30に固定する為の取付フランジを形成しな
い)単なる円筒面状の嵌合部31としている。又、この
嵌合部31の軸方向中間部で、径方向に関する厚さが最
も大きくなった部分(=内周面に外輪軌道8、8を形成
した部分同士の間部分)に、内側係合部である内側係合
溝38を、全周に亙って形成している。そして、上記支
持孔32の内周面の軸方向中間部で、上記内側係合溝3
8と整合する位置に、外側係合部である外側係合溝39
を、全周に亙って形成している。尚、組み付け前の状態
での、上記嵌合部31の外径D31は、上記支持孔32の
内径d32と同じかこれよりも僅かに大きくする(D31
32)事で、上記外輪3aが上記支持孔32の内側に締
め代を持って内嵌される様にしている。又、本例の場合
には、上記支持孔32の軸方向外端部内周面に、軸方向
に対する傾斜角度θが10〜30度程度である、円すい
凹面状のガイド面40を、全周に亙って形成している。 【0017】そして、上記外輪3aを上記支持孔32に
内嵌した状態で、この支持孔32の内周面に形成した外
側係合溝39と、上記外輪3aの嵌合部31の外周面に
形成した内側係合溝38との間に、係合部材である、弾
性材製で略C字形の欠円環状に形成した止め輪37を掛
け渡している。又、本発明の場合、この止め輪37を、
ステンレス鋼等の良好な耐食性を有する金属材製で外径
が1〜2mm程度の線材、又は、SWP−Bの如きピアノ
線等の、十分な耐食性を持たない金属材製で外径が1〜
2mm程度の線材の表面に、防食処理を施したものにより
造っている。例えば、上記ステンレス鋼として、SUS
631J1−WPCの如き析出硬化系のもの、又は、S
US304−WPDSの如きオーステナイト系のものが
好ましく使用できる。又、上記止め輪37を十分な耐食
性を持たない金属材製の線材から造る場合には、この線
材に曲げ加工を施して、略C字形の欠円環状に形成した
後、靱性及び耐衝撃性を向上させる為にオーステンパ処
理を施し、更に、表面にカチオン電着塗装、亜鉛メッ
キ、亜鉛−ニッケル合金メッキ等の防食処理を施す。
尚、上記止め輪37を構成する、十分な耐食性を持たな
いが、表面に防食処理を施せる材料として、上記ピアノ
線以外に、SWRH62Bの如き硬鋼線等が、好ましく
使用できる。 【0018】そして、この様な止め輪37の自由状態で
の外径D37を、前記支持孔32の内径d32よりも大きく
すると共に、この止め輪37の両端同士の間隔を弾性的
に縮めた状態で、この止め輪37の外径が上記支持孔3
2の内径d32以下になる様にしている。又、前記内側、
外側両係合溝38、39の溝底の直径d38、d39(図
2)は、上記止め輪37がこれら内側、外側両係合溝3
8、39に掛け渡される様に規制している。即ち、この
うちの内側係合溝38の溝底の直径d38は、上記支持孔
32の内径d32から、上記止め輪37を構成する線材の
直径d37(図3)の2倍を引いた値以下としている(d
38≦d32−2d37)。この様な規制は、この止め輪37
を上記内側係合溝38の底部に迄押し込んだ状態で、上
記外輪3aをこの止め輪37ごと上記支持孔32内に挿
入自在とする為に必要である。例えば、上記内側係合溝
38の溝底の直径d38は、上述した範囲で、前記嵌合部
31の外径D31から上記止め輪37を構成する線材の直
径d37の2倍を引いた値よりも少しだけ(0.2mm程
度)小さくする(d38≒D31−2d37−0.2mm)事が
好ましい。 【0019】又、上記外側係合溝39の溝底の直径d39
は、上記嵌合部31の外径D31に、上記止め輪37を構
成する線材の直径d37の2倍を足した値未満としている
(d 39<D31+2d37)。この様な規制は、上記止め輪
37の直径が弾性的に広がった状態で、この止め輪37
の内周縁部と上記内側係合溝38とを係合させる為に必
要である。例えば、上記外側係合溝39の溝底の直径d
39は、上述した範囲で、上記嵌合部31の外径D31に、
上記止め輪37を構成する線材の直径d37を足した値よ
りも少しだけ(0.2mm程度)大きくする(d39≒D31
+d37+0.2mm)。尚、図示の例では、この止め輪3
7を上記両係合溝38、39に掛け渡した状態で、外側
係合溝39の底面と上記止め輪37の外周縁部との間に
隙間が存在する様にしているが、この止め輪37の外周
縁部を上記外側係合溝39の底面に当接させた状態とす
る事もできる。 【0020】上記内側、外側両係合溝38、39及び止
め輪37の寸法を上述の様に規制する為、この止め輪3
7を内側係合溝38部分に装着した状態で、上記外輪3
aを上記ナックル30の支持孔32に挿入すれば、前記
車輪用軸受ユニット1aと上記ナックル30とを不離に
結合できる。即ち、上記外輪3aをこのナックル30に
対し結合する場合には、上記止め輪37を上記内側係合
溝38部分に装着した状態で、上記外輪3aを上記支持
孔32に、外側から内側に、図1、2の左から右に挿入
する。この挿入作業により上記止め輪37は、上記支持
孔32の外端部に形成した円すい凹面状のガイド面40
に案内されつつ、外径が弾性的に縮められて、上記支持
孔32内に押し込まれる。そして、上記止め輪37と外
側係合溝39とが整合した状態で、この止め輪37の直
径が弾性的に広がる。この様に止め輪37の直径が弾性
的に広がった状態では、この止め輪37が上記内側、外
側両係合溝38、39同士の間に掛け渡された状態にな
る為、上記外輪3aが上記支持孔32から抜け出る事が
防止され、上記車輪用軸受ユニット1aとナックル30
とが不離に結合される。 【0021】尚、上記内側、外側両係合溝38、39の
幅は、上記止め輪37を構成する線材d37の直径以上に
する必要があるが、これら幅と直径d37との差は、極力
小さくする。この理由は、上記内側、外側両係合溝3
8、39と上記止め輪37とによる結合部の、軸方向の
がたつきを抑える為である。 【0022】上述の様に構成する本発明の車輪用回転支
持装置によれば、ナックル30の支持孔32の内周面に
設けた外側係合溝39と、外輪3aの嵌合部31に設け
た内側係合溝38との間に止め輪37を掛け渡している
為、上記ナックル30に上記外輪3aを結合する為に複
数本のボルトを使用する必要がなくなり、組立作業の容
易化によるコスト低減と、小型化及び軽量化とを図れ
る。又、上記外輪3aの外周面にナックル30に固定す
る為の取付フランジを設ける必要がなくなる為、この外
輪3aの外周面の形状を単純にできる。 【0023】しかも、本発明の場合には、上記止め輪3
7を、良好な耐食性を有する金属材製とし、又は、金属
材製の線材の表面に防食処理を施したものにより造って
いる為、車輪用回転支持装置が雨水や融雪塩等、錆びが
発生する原因となる異物が付着し易い状態で使用される
場合でも、上記止め輪37の強度を長期間に亙り十分に
確保できる。この為、上記外輪3aが上記ナックル30
の支持孔29から抜け出る方向に変位するのを長期間に
亙り防止して、耐久性を十分に確保できる。 【0024】尚、車輪用軸受ユニット1aを点検・修理
する必要が生じた場合に、ナックル30からこの車輪用
軸受ユニット1aを容易に取り外せる様にする為に、図
4に示す様に、このナックル30の支持孔32の内周面
の周方向の一部に、外径側に凹入する凹入部41を形成
する事もできる。即ち、同図に示す構造の場合、上記支
持孔32の軸方向内半部(図4の右半部)内周面の円周
方向複数個所(図示の例では円周方向等間隔3個所)
に、それぞれ凹入部41を形成している。これら各凹入
部41は、上記支持孔32よりも径方向外方に凹んだ状
態で設けられたもので、それぞれの軸方向内端が上記支
持孔32の軸方向内端開口に達し、それぞれの軸方向外
端が外側係合溝39よりも軸方向外方に迄達する。即
ち、上記各凹入部41は、上記支持孔32の軸方向内端
開口から上記外側係合溝39を越えた部分に亙り形成し
ている。 【0025】そして、上記ナックル30から上記車輪用
軸受ユニット1aを取り外す場合に、図5に示す様な縮
径治具42を使用する。この縮径治具42は、円環部4
3の軸方向一端縁(図5の左端縁)の円周方向複数個所
(図示の例の場合は円周方向等間隔3個所)に、軸方向
に突出した係合突片44、44を、それぞれ設けてい
る。そして、これら各係合突片44、44の先端部内周
側面に、それぞれが先端縁に向かう程径方向外方に向か
う方向に傾斜した、ガイド傾斜面45、45を形成して
いる。上記ナックル30から上記車輪用軸受ユニット1
aを取り外す場合には、先ず、駆動軸部材18をハブ4
(図1参照)から分離して、上記ナックル30及び車輪
用軸受ユニット1aの軸方向内側に、上記縮径治具42
を配置するのに十分に広い空間を設ける。そして、前記
支持孔32よりも軸方向内側に外れた空間に上記縮径治
具42を、上記各係合突片44、44の先端部を前記各
凹入部41に対向させる状態で配置する。次いで、これ
ら各係合突片44、44の先端部を上記各凹入部41内
に進入させる。この進入作業に伴って、これら各係合突
片44、44の先端部に設けたガイド傾斜面45、45
が、上記各凹入部41内に存在する上記止め輪37の外
周縁の円周方向複数個所(図示の例では3個所)に係合
して、この止め輪37の外径を、前記支持孔32の内径
32(図2参照)以下に縮める。この止め輪37が耐食
性を有するものである為、この止め輪37の径を縮める
作業は容易に行なえる。この様に止め輪37の径を縮め
た状態で上記外輪3aは、上記支持孔32から軸方向外
方に向け、抜き取り自在となる為、この外輪3aを上記
支持孔32から抜き出す事により、上記ナックル30か
ら上記車輪用軸受ユニット1aを取り外せる。この様
に、上記ナックル30の支持孔32の内周面に上記凹入
部41を形成した場合には、上記ナックル30から上記
車輪用軸受ユニット1aを容易に取り外せる。又、この
様な取り外し作業の際に、上記止め輪37が破損する事
を防止でき、この止め輪37を再利用できる。又、この
取り外し作業の際に、この止め輪37から上記ナックル
30及び外輪3aに大きな力が加わる事がなくなる為、
このナックル30及び外輪3aが破損する事も防止でき
る。この結果、車輪用軸受ユニット1aの点検・修理に
要するコストを低減できる。 【0026】次に、図6〜8は、本発明の実施の形態の
第2例を示している。本例の場合には、ナックル30に
対し外輪3aが軸方向に抜け出る方向に変位するのを防
止する為に、この外輪3aの外周面と上記ナックル30
に設けた支持孔32の内周面との間に、係合部材であ
る、弾性金属材製の環状部材46を設けている。この環
状部材46は、SUS631J1−WPCの如きステン
レス鋼板等の良好な耐食性を有する金属板で厚さが1〜
2mm程度のもの、又は、S55CM〜S75CMの如き
みがき特殊帯鋼等の十分な耐食性を持たない金属板の表
面に防食処理を施したもので厚さが1〜2mm程度のもの
により造っている。そして、この様な金属板に曲げ加工
を施して、断面略L字形で全体を円環状に形成した本体
部47と、この本体部47の円周方向複数個所に設けた
傾斜突部48、48とから成る、上記環状部材46とし
ている。このうちの傾斜突部48、48は、上記本体部
47を構成する筒部49の円周方向複数個所に軸方向内
側に開口する状態でそれぞれ形成したコ字形の切れ目の
内側部分を、外径側に傾斜しつつ突出する状態で曲げ形
成する事で設けている。尚、上記環状部材46を、上記
みがき特殊帯鋼等の十分な耐食性を持たない金属板の表
面に防食処理を施したものから造る場合には、この金属
板を所定の長さに切断すると共に、曲げ加工を施した
後、靱性及び耐衝撃性を向上させる為のオーステンパ処
理を施し、更に表面にカチオン電着塗装等の防食処理を
施す。又、前記十分な耐食性を持たないが表面に防食処
理を施せる金属板として、前記みがき特殊帯鋼以外に、
SK5Mの如き炭素工具鋼や、SUP6Mの如きばね鋼
等も、好ましく使用できる。 【0027】又、本例の場合には、前記ナックル30に
設けた支持孔32の外端部内周面に溝部50を、全周に
亙り形成している。この溝部50の軸方向外側面(図
6、7の左側面)は、内径側に向かう程軸方向外側に向
かう方向に傾斜した傾斜面としている。一方、上記支持
孔32の内端部内周面に内径側に突出する内向鍔部51
を、全周に亙り形成している。そして、上記支持孔32
の内側に前記外輪3aを内嵌すると共に、この外輪3a
の内端面を上記内向鍔部51の外側面に突き当ててい
る。又、上記外輪3aの外端部外周面に前記環状部材4
6を、前記本体部47を構成する円輪部52の内側面を
上記外輪3aの外端面に突き合わせた状態で外嵌してい
る。そして、前記各傾斜突部48、48の先端縁を、上
記溝部50の軸方向外側面に突き当てている。この状態
で、上記環状部材46は、上記外輪3aの軸方向に変位
する事が阻止される。又、上記外輪3aは、上記支持孔
32の内端部に設けた内向鍔部51と、上記環状部材4
6の円輪部52との間で軸方向両側から挟持される。こ
の結果、上記外輪3aは、上記支持孔32の内側から抜
け出る方向に変位する事が阻止される。尚、上記外輪3
aの外周面とこの支持孔32の内周面との間に上記環状
部材46を組み付ける作業は、この支持孔32に上記外
輪3aを挿入した後、上記支持孔32の外端部内周面と
上記外輪3aの外端部外周面との間部分に上記環状部材
46を挿入(圧入)する事により行なう。この様な挿入
作業に伴い、上記環状部材46に設けた傾斜突部48、
48は、上記支持孔32の外端部により内径側に弾性変
形させられた後、上記溝部50に整合する位置で弾性復
帰する。そして、この状態で、上記溝部50の軸方向外
側面と上記各傾斜突部48、48との係合により、上記
環状部材46が軸方向外側に変位する事が阻止されると
共に、上記円輪部52と上記外輪3aとの係合により、
上記環状部材46が軸方向内側へ変位する事が阻止され
る。 【0028】上述の様に構成する本例の場合には、上述
した第1例の場合と異なり、外輪3aの外周面に止め輪
37を係合させる為の内側係合溝38(図1、2、4参
照)を形成する必要がなくなる。その他の構成及び作用
に就いては、上述した第1例の場合と同様である為、同
等部分には同一符号を付して重複する説明は省略する。 【0029】次に、図9〜10は、本発明の実施の形態
の第3例を示している。本例の場合には、上述した各例
の場合と異なり、第一の内輪軌道10を、ハブ4aの中
間部外周面に直接形成している。そして、このハブ4a
の内半部外周面で、上記第一の内輪軌道10よりも軸方
向内側に外れた部分に小径段部11を形成している。
又、この小径段部11に、その外周面に第二の内輪軌道
12を形成した内輪5を外嵌している。そして、この状
態で、上記ハブ4aの内端部で、この内輪5の内端面か
ら突出した部分を直径方向外方にかしめ広げる事で形成
したかしめ部53により、上記内輪5の内端面を抑え付
けて、この内輪5を上記ハブ4aに固定している。本例
の場合には、これら内輪5及びハブ4aが、回転部材3
6bを構成している。 【0030】又、本例の場合には、上述した各例の場合
と異なり、等速ジョイント2aを構成する駆動軸部材1
8aの外端部に設けたスプライン軸17aの外端部に、
ナット24を螺合する為の雄ねじ部23(図1、6参
照)を形成していない。その代わりに、本例の場合に
は、上記スプライン軸17aの外端寄り部分の外周面に
内側係止溝54を、全周に亙って形成すると共に、上記
ハブ4aの中心部に設けたスプライン孔13の外端部内
周面で上記内側係止溝54と整合する位置に、外側係止
溝55を、全周に亙って形成している。そして、これら
内側、外側両係止溝54、55に、欠円環状の第二の止
め輪56を掛け渡している。この第二の止め輪56は、
ばね鋼、ステンレスばね鋼等の弾性材製の線材を曲げ形
成する事により、略C字形の欠円環状に形成したもの
で、径を広げる方向の弾性を有する。この様な第二の止
め輪56は、径を弾性的に広げた状態で、上記両係止溝
54、55同士の間に掛け渡されて、上記スプライン軸
17aが上記スプライン孔13から抜け出るのを防止す
る。 【0031】又、本例の場合には、前記駆動軸部材18
aを構成する等速ジョイント用外輪14の外端面と、前
記ハブ4aの内端部に設けたかしめ部53の内端との間
でシールリング57を、軸方向に弾性的に圧縮してい
る。又、上記ハブ4aの外端部に形成した筒部58に、
有底円筒状のキャップ59を内嵌固定している。そし
て、このキャップ59と上記シールリング57とによ
り、上記スプライン軸17aと上記スプライン孔13と
のスプライン係合部に、雨水等の異物が進入する事を防
止して、このスプライン係合部が錆び付く事を防止して
いる。 【0032】この様な本例の場合には、上述した各例の
場合に比べて、ハブ4aと駆動軸部材18aとの結合作
業を容易に行なえる。即ち、上述した各例の場合、ハブ
4と駆動軸部材18とを結合する為に、スプライン軸1
7の雄ねじ部23にナット24(図1、6参照)を螺合
し更に緊締する、面倒な作業が必要となる。この様にハ
ブ4と駆動軸部材18との結合作業が面倒であると、等
速ジョイント2(図1、6参照)と組み合わせた、車輪
用回転支持装置のコストが嵩む原因となる。又、上記雄
ねじ部23とナット24を結合する分、車輪用回転支持
装置が大型化して、重量も嵩む。これに対して本例の場
合には、ハブ4aと駆動軸部材18aとを結合するの
に、このハブ4aに設けたスプライン孔13の外端部内
周面とスプライン軸17aの外端部外周面との間に、第
二の止め輪56を掛け渡すだけで良い。この為、等速ジ
ョイント2aと組み合わせた、車輪用回転支持装置の組
立作業の容易化を図れて、組立に要するコスト低減を図
れると共に、小型化及び軽量化を図れる。尚、点検、修
理の際に、上記スプライン孔13から上記スプライン軸
17aを抜き取る作業を能率良く行う為には、このスプ
ライン孔13の外端開口部に、前述の図4に示した凹入
部41と同様の凹部を形成すれば良い。更には、前記外
側係止溝55の軸方向内方側面に適切な傾斜角度を付け
れば、上記スプライン軸17aの先端面に衝撃荷重を付
与する事により、このスプライン軸17aを上記スプラ
イン孔13から、容易に抜き出せる。 【0033】尚、上述した各例は、自動車の駆動輪を支
持する為の構造に本発明を適用した場合に就いて説明し
たが、本発明は、この様な構造に限定するものではな
く、例えば、自動車の従動輪を支持する為の構造で、本
発明を実施する事もできる。 【0034】 【発明の効果】本発明は、以上に述べた通り構成され作
用するので、組立作業の容易化によるコスト低減と、小
型・軽量化とを図れ、しかも、外輪が支持孔から抜け出
る方向に変位する事を、長期間に亙り防止して、耐久性
を十分に確保できる。
DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supports a wheel.
Bearing unit for wheels and independent suspension type
Combining with a support member that constitutes a part of the
For wheels to support wheels rotatably with respect to the suspension
The present invention relates to improvement of a rotation support device. [0002] 2. Description of the Related Art Wheels are supported rotatably with respect to a suspension system.
The outer ring and the inner ring in a rotatable manner via rolling elements.
Various types of combined wheel bearing units are used.
You. In addition, an independent suspension type suspension which is a kind of suspension system
To support the wheels so that they can rotate freely.
Provided on the knuckle that forms part of the suspension suspension
Of the outer ring that constitutes the wheel bearing unit
Part of the inner ring is fitted, and the outer ring and the support
The rotation support device for wheels connected by
Used well. FIG. 11 shows such a wheel rotation support.
Drive wheels are supported by independent suspension suspension
As well as a wheel drive to rotate this drive wheel
Wheel bearing unit 1 and a knuck constituting a suspension device
Of the wheel rotation support device in combination with the
Shows a simple structure. [0003] Of these, the wheel bearing unit 1 is an outer ring.
The hub 4 and the inner ring 5 are provided on the inner diameter side of
It is rotatably supported via a. Outer ring 3 of these
Is provided by a first mounting flange 7 provided on the outer peripheral surface thereof.
Knuckle 3 which is a support member constituting a part of the suspension device
It does not rotate during use with it fixed to 0. Immediately
When the wheel bearing unit 1 is used, the outer ring
3 axial inner end (in the axial direction is the inner
3 and 5 on the side that is the center in the width direction of the vehicle in the mounted state.
The right side of each figure except. Same throughout this specification. ) On the outer surface
The provided cylindrical surface fitting portion 31 is provided on the knuckle 30.
Into the support hole 32. Then, in this state,
Bolt 34 is inserted through a plurality of through holes 33 provided in knuckle 30
Then, the male thread portion of each of the bolts 34 is
Screwing and tightening into the screw hole 35 provided on the attached flange 7
Thus, the wheel bearing unit 1 is connected to the knuckle 30.
In contrast, Further, a pair of inner circumferential surfaces of the outer ring 3 are provided.
Outer ring tracks 8, 8 are provided, and on the inner diameter side of this outer ring 3,
The hub 4 and the inner ring 5, each of which forms the rotating member 36,
It is rotatably supported concentrically with the outer ring 3. The hub 4 is an axially outer end of the outer peripheral surface.
(The outside in the axial direction means that the vehicle is
Left side of each figure except for FIGS. 3 and 5 on both sides in the width direction outside
side. Same throughout this specification. ) Support the wheel on the leaning part
A second mounting flange 9 is provided. In addition,
A first inner raceway 10 is formed at an intermediate portion of the outer peripheral surface of the
Similarly, a small-diameter stepped portion 11 formed at the inner end in the axial direction is
The inner ring 5 having the second inner ring raceway 12 formed on the peripheral surface is externally fitted.
It is fixed. A splice is located at the center of the hub 4.
Hole 13 is provided. On the other hand, the wheel bearing unit 1 has a constant speed.
Joint 2 is combined. This constant velocity joint
2 is a constant velocity joint outer ring 14 and a constant velocity joint
Inner ring 15, a plurality of balls 16, 16 and a spline shaft
17 are provided. Outer ring 14 for constant velocity joint
And the spline shaft 17 constitute a drive shaft member 18.
That is, the spline shaft 17 is the shaft of the drive shaft member 18.
In the outer half of the spline hole.
The outer ring 14 for a constant velocity joint is
The drive shaft member 18 is provided at an inner half portion in the axial direction. This constant velocity
At several places in the circumferential direction of the inner peripheral surface of the joint outer ring 14
The outer engagement grooves 19, 19 are respectively
They are formed at right angles. Also for the above constant velocity joint
The ring 15 has a second spline hole 20 in the center,
The inner surface of the peripheral surface is aligned with the outer engagement grooves 19, 19.
The side engagement grooves 21, 21 are each perpendicular to the circumferential direction.
It is formed in the direction. And, each of these inner engagement grooves 21,
21 and the outer engagement grooves 19, 19,
With the holders 16, 16 held by the holder 22,
These are provided so as to roll freely along the respective engagement grooves 21 and 19. The constant velocity joint 2 as described above and the constant velocity joint 2 as described above
To combine with the wheel bearing unit 1,
Insert the line shaft 17 into the spline hole 13 of the hub 4
Insert in the direction from inside to outside. And the above
The outer end surface of the hub 4 at the axially outer end of the spline shaft 17
Nut 24 to the external thread 23 provided at the part protruding from
By screwing and tightening, they are connected and fixed to each other.
In this state, the inner end surface of the inner ring 5 is
The inner ring 5 is in contact with the outer end face of the
There is no displacement in the direction of coming out of the small diameter step portion 11. same
At times, an appropriate preload is applied to each of the rolling elements 6,6. [0007] Further, the assembled state of the vehicle to the suspension system
Then, it is provided at the center of the inner ring 15 for the constant velocity joint.
The second spline hole 20 has an axially outer end of the drive shaft 25.
The male spline portion 26 provided in the above is spline-engaged.
And, the outer peripheral surface of the axially outer end portion of the male spline portion 26
Ring 2 locked in locking groove 27 formed over the entire circumference
8 around the outer end opening in the axial direction of the second spline hole 20.
Engage with the locking step 29 formed on the edge, and
The line portion 26 comes out of the second spline hole 20.
To prevent The inner end of the drive shaft 25 in the axial direction.
Is provided on the output shaft of the differential gear (not shown).
Also, a tripod type constant velocity joint (not shown)
Connect and fix to the center of the runion. Therefore, the running of the car
During the row, the drive shaft 25 rotates at a constant speed. Further, US Pat. No. 5,927,867
The outer surface of the outer ring that constitutes the wheel bearing unit
(Do not form a mounting flange for fixing to the knuckle.
I) A simple cylindrical surface and the outer ring and knuckle
Are connected by an annular member. this
The annular member has a substantially L-shaped cross section and is formed in an annular shape as a whole.
You. Also, a part of the cylindrical portion constituting the annular member in the circumferential direction is
A state in which the protruding portion is inclined and protrudes from the outer peripheral surface of the cylinder
It is formed by. Also, the axial direction of the knuckle support hole
A groove is formed on the inner peripheral surface of the end. And this support hole
And the other end in the axial direction of the support hole.
On the side surface of the inward flange provided on the inner peripheral surface of the
The end face is struck. And one end in the axial direction of this outer ring
The annular member is externally fitted to the outer peripheral surface of the
The end facing the other side in the axial direction on both sides of the groove
Face to face. For this reason, the outer ring is
Is prevented from being displaced in a direction to escape from the inside of the inside. Further, Japanese Patent Application Laid-Open No. 2001-105806 discloses
Is the knuckle and the outer ring that constitutes the wheel bearing unit.
Are connected by elastic end clips.
Is described. In the case of the third example of such a conventional structure,
Outer engagement formed in the circumferential direction of the inner peripheral surface of the knuckle support hole
Mating groove and inner engaging groove formed in the circumferential direction of the outer peripheral surface of the outer ring
And Then, connect the outer ring to the knuckle.
When attaching the clip to the inner engagement groove,
Then, with the diameter of this clip elastically reduced,
Insert the outer ring together with the clip into the support hole. this
The clip aligns with the outer engagement groove during insertion
In this state, the diameter of this clip returns elastically.
Clips between the outer engagement groove and the inner engagement groove.
It will be in the passed state. In this state, the outer race is
Displacement in a direction to escape from the holding hole is prevented. [0010] The above-mentioned US patent specification
No. 5,927,867.
Examples and JP-A-2001-105806 mentioned above
In any case of the third example of the conventional structure described in
The outer ring is connected and fixed to the knuckle with only the ring member or clip
, So that multiple bolts can be omitted,
It is possible to facilitate the upright work, and reduce the size and weight. However,
The wheel rotation support device generates rust such as rainwater and snow melting salt.
It is used in a state where foreign substances that cause the dust are easily attached. this
For this reason, the annular member or the clip
May rust. What are the second and third examples of the above conventional structure?
In these cases, too, take measures to prevent such rusting.
Not. In this way, the above-mentioned annular members and clips
The strength of each of these members will decrease if
Each of these members is damaged by an extremely small impact load,
Over a long period of time
May not be prevented. Rotation for wheels of the present invention
In consideration of such circumstances, the support device facilitates assembly work.
Cost, and miniaturization and weight reduction
Have also invented a structure that can secure sufficient durability.
It is a thing. [0011] SUMMARY OF THE INVENTION A rotary support for a wheel according to the present invention.
The device is the same as the first example of the conventional structure shown in FIG.
A support member that constitutes a suspension device and supports the wheels;
Supported on the inner diameter side of the support hole provided in the support member
A wheel bearing unit. And the wheels of these
Bearing unit has an outer raceway on the inner peripheral surface and
Each has a fitting part for fitting inside the support hole, and when used
And the outer ring that does not rotate
A mounting flange for supporting the outer ring
Each has an inner ring raceway facing the raceway and rotates when used.
Between the rotating member rotating and the inner raceway and the outer raceway.
And a plurality of rolling elements provided so as to be freely rotatable. In particular, in the wheel rotation support device of the present invention,
Between the inner peripheral surface of the support hole and the outer peripheral surface of the fitting portion.
And the axial direction of the outer race with respect to the support member.
And an engaging member for preventing displacement of And this engagement
The member is made of corrosion-resistant material, or the surface is
It is made of applied material. [0013] According to the present invention, there is provided a rotation supporting device for a wheel according to the present invention.
According to the arrangement, the wheel bearing unit is coupled to the support member.
This eliminates the need to use multiple bolts. this
As a result, costs are reduced by facilitating the assembly work, and
Quantification can be achieved. In addition, rust occurs such as rainwater and snow-melting salt
When used in a state where foreign matter that causes
However, the strength of the engaging member can be sufficiently secured for a long period of time.
You. For this reason, the direction in which the outer ring comes out of the support hole of the support member
Over a long period of time to ensure sufficient durability
Can be secured. [0014] 1 to 3 show an embodiment of the present invention.
1 shows a first example. The feature of the present invention is that
Simplicity, small size and light weight, and sufficient durability
Outer ring 3a and knuckle 3 as a support member.
The point is that the structure of the connecting portion with 0 is devised. In this example
The structure of the other parts is the same as the conventional structure shown in FIG.
The structure is almost the same as the first example of the structure, and duplicate description will be omitted.
Abbreviated or simplified, below, the features of the present invention and above
The following description focuses on the differences from the conventional structure. The wheel rotation support device of the present invention is a suspension device.
Knuckle 3 which is a support member for supporting the wheels by constituting
0 and the inner diameter side of the support hole 32 provided in the knuckle 30.
And a supported wheel bearing unit 1a. This wheel
The bearing unit 1a includes a hub 4 and a hub 4 on the inner diameter side of the outer ring 3a.
The pair of inner rings 5a and 5b are rotatably supported. Soshi
Of the pair of inner rings 5a and 5b,
The inner end face of the inner ring 5b is moved to the constant velocity
It abuts against the outer end surface of the outer ring for joint 14. or,
A first inner raceway 10 is provided on the outer peripheral surface of each of the inner races 5a and 5b.
And the second inner raceway 12. In the case of this example
The pair of inner rings 5a, 5b and the hub 4
It constitutes the rolling member 36a. And of the outer ring 3a
The inner peripheral surface is formed in a state facing the inner ring raceways 10 and 12.
The pair of outer raceways 8, 8 formed above and the inner raceways 10,
12 and a plurality of rolling elements 6, 6
By freely providing, the above-mentioned c
And the pair of inner rings 5a and 5b are rotatably supported.
I have. Particularly, in the case of the wheel rotation support device of this embodiment,
Is an inner peripheral surface of a support hole 32 provided in the knuckle 30;
Outer circumference of outer ring 3a that constitutes the wheel bearing unit 1a
Knuckle 37
30 and the wheel bearing unit 1a are prevented from being separated from each other.
You. That is, in the case of this example, the outer peripheral surface of the outer ring 3a is
Do not form a mounting flange for fixing to the knuckle 30.
I) The fitting portion 31 is simply a cylindrical surface. Also this
In the axial middle part of the fitting part 31, the thickness in the radial direction is
(= Forming outer ring tracks 8, 8 on the inner peripheral surface)
The inner engagement portion which is the inner engagement portion
The groove 38 is formed over the entire circumference. And the above support
At the axially intermediate portion of the inner peripheral surface of the holding hole 32, the inner engaging groove 3
The outer engagement groove 39, which is the outer engagement portion,
Is formed over the entire circumference. In addition, the state before assembling
Outer diameter D of the fitting portion 3131Of the support hole 32
Inner diameter d32Or slightly larger than this (D31
d32), The outer ring 3a is tightened inside the support hole 32.
It is made to fit inside with a margin. In the case of this example
In the inner peripheral surface of the axially outer end of the support hole 32,
Cone angle is about 10 to 30 degrees
The concave guide surface 40 is formed over the entire circumference. Then, the outer ring 3a is inserted into the support hole 32.
In the state of being fitted inside, the outside formed on the inner peripheral surface of this support hole 32
Side engaging groove 39 and the outer peripheral surface of the fitting portion 31 of the outer ring 3a.
An elastic member, which is an engaging member, is formed between the formed inner engaging groove 38 and the inner engaging groove 38.
A retaining ring 37 made of a non-conductive material and formed into a substantially C-shaped
Handed over. In the case of the present invention, this retaining ring 37 is
Made of metal material with good corrosion resistance such as stainless steel and outer diameter
Is about 1 to 2mm wire or piano like SWP-B
Made of metal material that does not have sufficient corrosion resistance, such as wire, and has an outer diameter of 1 to
About 2mm wire rod surface treated with anticorrosion
Building. For example, as the stainless steel, SUS
Precipitation hardening type such as 631J1-WPC or S
Austenitic materials such as US304-WPDS
It can be used preferably. In addition, the above-mentioned retaining ring 37 has sufficient corrosion resistance.
If the wire is made of non-metallic wire,
The material was bent to form a substantially C-shaped cutout ring
After that, to improve toughness and impact resistance, austempering
The surface is treated with cationic electrodeposition coating and zinc plating.
(C) Anti-corrosion treatment such as zinc-nickel alloy plating is performed.
It should be noted that the retaining ring 37 does not have sufficient corrosion resistance.
However, the above-mentioned piano
Other than the wire, a hard steel wire such as SWRH62B is preferable.
Can be used. Then, in such a free state of the retaining ring 37,
Outer diameter D of37With the inner diameter d of the support hole 3232Greater than
And the distance between both ends of the retaining ring 37 is elastically adjusted.
With the outer diameter of the retaining ring 37 being reduced to
Inner diameter d of 232It will be as follows. Also, the inside,
Diameter d of groove bottom of both outer engagement grooves 38, 3938, D39(Figure
2) is that the retaining ring 37 has both the inner and outer engagement grooves 3
It is regulated to be spread over 8, 39. That is, this
The diameter d of the groove bottom of the inner engaging groove 3838Is the above support hole
32 inner diameter d32Of the wire constituting the retaining ring 37
Diameter d37(FIG. 3) is equal to or less than a value obtained by subtracting twice (d)
38≦ d32-2d37). Such a restriction applies to this retaining ring 37.
Is pushed down to the bottom of the inner engagement groove 38, and
The outer ring 3a is inserted into the support hole 32 together with the retaining ring 37.
It is necessary to make it freely accessible. For example, the inner engagement groove
38 groove bottom diameter d38Is within the range described above,
31 outer diameter D31From the wire forming the retaining ring 37
Diameter d37Slightly less than the value obtained by subtracting twice (about 0.2 mm
Degree) smaller (d38≒ D31-2d37-0.2mm)
preferable. The diameter d of the bottom of the outer engagement groove 39 is d.39
Is the outer diameter D of the fitting portion 3131And the retaining ring 37
Diameter d of the formed wire37Less than the value obtained by adding twice
(D 39<D31+ 2d37). Such a regulation is based on the above retaining ring
With the diameter of the ring 37 elastically widened, this retaining ring 37
Necessary to engage the inner peripheral edge of the
It is important. For example, the diameter d of the groove bottom of the outer engagement groove 39 is d.
39Is the outer diameter D of the fitting portion 31 within the range described above.31To
Diameter d of the wire constituting the retaining ring 3737Is the sum of
A little (about 0.2 mm).39≒ D31
+ D37+0.2 mm). In the illustrated example, this retaining ring 3
7 in a state of being bridged between the engagement grooves 38 and 39,
Between the bottom surface of the engagement groove 39 and the outer peripheral edge of the retaining ring 37
Although there is a gap, the outer circumference of this retaining ring 37
The edge is brought into contact with the bottom surface of the outer engagement groove 39.
You can also. The inner and outer engagement grooves 38, 39 and the stop
In order to regulate the dimensions of the female ring 37 as described above,
7 with the outer ring 3 attached to the inner engagement groove 38.
a into the support hole 32 of the knuckle 30,
Keep the wheel bearing unit 1a and the knuckle 30 apart.
Can be combined. That is, the outer ring 3a is attached to the knuckle 30.
In the case of coupling, the retaining ring 37 is
When the outer ring 3a is mounted on the groove 38, the outer ring 3a is supported.
Insert the hole 32 from outside to inside and from left to right in FIGS.
I do. Due to this insertion work, the retaining ring 37 is
Conical concave guide surface 40 formed at the outer end of hole 32
The outer diameter is elastically reduced while being guided by
It is pushed into the hole 32. And the retaining ring 37 and the outside
When the retaining ring 37 is aligned with the side engagement groove 39,
The diameter expands elastically. In this way, the diameter of the retaining ring 37 is elastic
When the ring is expanded in a horizontal direction, the retaining ring 37 is
It is in a state of being bridged between both side engagement grooves 38, 39.
Therefore, the outer ring 3a may come out of the support hole 32.
The knuckle 30 and the wheel bearing unit 1a
And are inseparably linked. The inner and outer engagement grooves 38, 39
The width is the wire d constituting the retaining ring 37.37More than the diameter of
The width and diameter d37The difference between
Make it smaller. This is because the inner and outer engagement grooves 3
8 and 39 and the retaining ring 37 in the axial direction
This is to reduce rattling. The rotating support for a wheel according to the present invention configured as described above.
According to the holding device, the inner peripheral surface of the support hole 32 of the knuckle 30
The outer engagement groove 39 provided and the fitting portion 31 of the outer ring 3a are provided.
The retaining ring 37 extends between the inner engaging groove 38 and the inner engaging groove 38.
For connecting the outer ring 3a to the knuckle 30,
Eliminates the need to use several bolts
Reduce costs by facilitation, and reduce size and weight
You. A knuckle 30 is fixed to the outer peripheral surface of the outer ring 3a.
It is not necessary to provide a mounting flange for
The shape of the outer peripheral surface of the wheel 3a can be simplified. In addition, in the case of the present invention, the retaining ring 3
7 is made of a metal material having good corrosion resistance, or
Made of anti-corrosion treated wire
Rust, such as rainwater and snow-melting salt
Used in a state where foreign matter that causes the generation is likely to adhere
Even in this case, the strength of the retaining ring 37 is sufficiently increased for a long period of time.
Can be secured. Therefore, the outer ring 3a is connected to the knuckle 30.
For a long period of time
Over, and sufficient durability can be ensured. The wheel bearing unit 1a is inspected and repaired.
Knuckle 30 for this wheel
In order to be able to easily remove the bearing unit 1a,
As shown in FIG. 4, the inner peripheral surface of the support hole 32 of the knuckle 30
A recessed part 41 is formed in a part of the circumference of
You can do it. That is, in the case of the structure shown in FIG.
The circumference of the inner peripheral surface of the inner half of the holding hole 32 in the axial direction (the right half of FIG. 4).
Multiple locations in the direction (3 locations at equal intervals in the circumferential direction in the example shown)
Are formed with recesses 41, respectively. Each of these recesses
The portion 41 has a shape recessed radially outward from the support hole 32.
The inner ends in the axial direction are
Reach the inner end opening of the holding hole 32 in the axial direction, and
The end extends axially outward beyond the outer engagement groove 39. Immediately
In addition, each of the concave portions 41 is formed at an axial inner end of the support hole 32.
It is formed from the opening to the portion beyond the outer engagement groove 39.
ing. Then, from the knuckle 30 to the wheel
When removing the bearing unit 1a, the compression as shown in FIG.
A diameter jig 42 is used. The diameter reducing jig 42 includes the annular portion 4.
3 at one end in the axial direction (left end in FIG. 5)
(In the case of the example shown, three places at equal intervals in the circumferential direction)
Engaging projections 44, 44 projecting from
You. The inner periphery of the tip of each of the engaging projections 44, 44
On the side, the more each goes toward the leading edge, the more radially outward
Guide inclined surfaces 45, 45 inclined in the direction
I have. From the knuckle 30 to the wheel bearing unit 1
a, first, the drive shaft member 18 is connected to the hub 4.
Separated from the knuckle 30 and the wheel (see FIG. 1).
In the axial direction inside of the bearing unit 1a for use,
Provide a space wide enough to place And said
In the space deviated axially inward from the support hole 32,
The tip of each of the engaging projections 44, 44 is
It is arranged so as to face the recess 41. Then this
From the engaging protrusions 44, 44 in the recesses 41.
To enter. With this approach, each of these engagement protrusions
Guide inclined surfaces 45, 45 provided at the tips of the pieces 44, 44
Outside the retaining ring 37 existing in each of the concave portions 41.
Engages at multiple locations in the circumferential direction (three locations in the example shown)
Then, the outer diameter of the retaining ring 37 is changed to the inner diameter of the support hole 32.
d32(See FIG. 2) This retaining ring 37 is corrosion resistant
To reduce the diameter of the retaining ring 37.
Work can be done easily. In this way, the diameter of the retaining ring 37 is reduced
In this state, the outer ring 3a is moved out of the support hole 32 in the axial direction.
The outer ring 3a as described above.
By pulling out from the support hole 32, the knuckle 30
The wheel bearing unit 1a can be removed therefrom. Like this
The knuckle 30 is recessed into the inner peripheral surface of the support hole 32.
When the portion 41 is formed, the knuckle 30
The wheel bearing unit 1a can be easily removed. Also this
During such removal work, the retaining ring 37 may be damaged
Can be prevented, and the retaining ring 37 can be reused. Also this
When removing the knuckle from the retaining ring 37
Since no large force is applied to the outer ring 30 and the outer ring 3a,
The knuckle 30 and the outer ring 3a can be prevented from being damaged.
You. As a result, the inspection and repair of the wheel bearing unit 1a
The required cost can be reduced. Next, FIGS. 6 to 8 show an embodiment of the present invention.
A second example is shown. In the case of this example, the knuckle 30
On the other hand, the outer ring 3a is prevented from being displaced in a direction in which the outer ring 3a comes off in the axial direction.
In order to stop, the outer peripheral surface of the outer ring 3a and the knuckle 30
Between the inner peripheral surface of the support hole 32 provided in
An annular member 46 made of an elastic metal material is provided. This ring
The member 46 is made of stainless steel such as SUS631J1-WPC.
Metal plate with good corrosion resistance such as
About 2mm or S55CM-S75CM
Table of metal plates that do not have sufficient corrosion resistance, such as brushed special steel strip
Anti-corrosion treated surface with thickness of about 1-2mm
It is made by. And bending work on such a metal plate
With a substantially L-shaped cross-section
Portion 47 and a plurality of circumferential portions of the main body portion 47 are provided.
The above-mentioned annular member 46 composed of inclined projections 48
ing. Of these, the inclined projections 48, 48 are
47 at a plurality of positions in the circumferential direction of the cylindrical portion 49 constituting
U-shaped cuts formed respectively with the sides open
Bending shape with the inner part protruding while tilting to the outer diameter side
It is provided by doing. Note that the annular member 46 is
Table of metal plates that do not have sufficient corrosion resistance, such as brushed special steel strip
When making from anti-corrosion treated surfaces, this metal
The board was cut to a predetermined length and bent.
Afterwards, austempering to improve toughness and impact resistance
The surface is treated with anti-corrosion treatment such as cationic electrodeposition coating.
Apply. In addition, the surface does not have sufficient corrosion resistance,
As a metal plate that can be treated, in addition to the above-mentioned special steel strip,
Carbon tool steel such as SK5M and spring steel such as SUP6M
Etc. can also be preferably used. In the case of this example, the knuckle 30
A groove 50 is formed on the inner peripheral surface of the outer end of the support hole 32 provided,
It is formed over. The axially outer surface of the groove 50 (see FIG.
6 and 7) are axially outward toward the inner diameter side.
The inclined surface is inclined in the fitting direction. Meanwhile, the above support
Inward flange portion 51 protruding toward the inner diameter side on the inner peripheral surface of the inner end portion of hole 32
Is formed over the entire circumference. And, the support hole 32
The outer ring 3a is fitted inside the outer ring 3a.
Of the inward flange 51 against the outer surface of the inward flange 51.
You. Further, the annular member 4 is provided on the outer peripheral surface of the outer end of the outer ring 3a.
6 with the inner surface of the annular portion 52 constituting the main body 47.
The outer ring 3a is fitted to the outer end face of the
You. Then, the leading edge of each of the inclined projections 48, 48 is
It abuts against the axially outer surface of the groove 50. This state
The annular member 46 is displaced in the axial direction of the outer race 3a.
Is prevented. The outer ring 3a is provided with the support hole.
32, an inward flange 51 provided at an inner end of the annular member 4;
6 between the two annular portions 52 from both sides in the axial direction. This
As a result, the outer race 3a is pulled out from the inside of the support hole 32.
Displacement in the ejection direction is prevented. The outer ring 3
a between the outer peripheral surface of a and the inner peripheral surface of the support hole 32.
The operation of assembling the member 46 is carried out by
After inserting the wheel 3a, the inner peripheral surface of the outer end of the support hole 32 is
The annular member is provided at a portion between the outer ring 3a and the outer peripheral surface of the outer end.
This is performed by inserting (press-fitting) 46. Insertion like this
With the work, the inclined projection 48 provided on the annular member 46,
Numeral 48 denotes an elastic change in the inner side due to the outer end of the support hole 32.
After being shaped, it is elastically restored at a position matching the groove 50.
Return. Then, in this state, the outside of the groove 50 in the axial direction is
The engagement between the side surface and each of the inclined projections 48, 48 allows the
When the annular member 46 is prevented from being displaced outward in the axial direction,
In both cases, the engagement between the ring portion 52 and the outer ring 3a
The annular member 46 is prevented from being displaced inward in the axial direction.
You. In the case of the present embodiment configured as described above,
Unlike the case of the first example, a retaining ring is provided on the outer peripheral surface of the outer ring 3a.
37 to engage the inner engagement groove 38 (see FIGS. 1, 2, and 4).
Need not be formed. Other configurations and functions
Is the same as the case of the first example described above,
The same parts are denoted by the same reference numerals, and duplicate description will be omitted. Next, FIGS. 9 to 10 show an embodiment of the present invention.
3 shows a third example. In the case of this example, each of the above examples
Unlike the case of, the first inner raceway 10 is
It is formed directly on the outer peripheral surface of the intermediate portion. And this hub 4a
The outer peripheral surface of the inner half of
A small-diameter stepped portion 11 is formed at a portion deviated toward the inside.
The small-diameter step portion 11 has a second inner raceway on its outer peripheral surface.
The inner ring 5 formed with 12 is externally fitted. And this state
In the state, at the inner end of the hub 4a,
Formed by caulking out the protruding part radially outward
The inner end surface of the inner ring 5 is suppressed by the swaged portion 53
In addition, the inner ring 5 is fixed to the hub 4a. This example
In this case, the inner ring 5 and the hub 4a
6b. In the case of this embodiment, the case of each of the above-described embodiments is used.
Unlike the constant velocity joint 2a, the drive shaft member 1
At the outer end of the spline shaft 17a provided at the outer end of 8a,
Male screw part 23 for screwing nut 24 (see FIGS. 1 and 6)
Is not formed. Instead, in this case
Is located on the outer peripheral surface of the portion near the outer end of the spline shaft 17a.
The inner locking groove 54 is formed over the entire circumference, and
Inside the outer end of the spline hole 13 provided at the center of the hub 4a
At the position matching with the inner locking groove 54 on the peripheral surface, the outer locking
The groove 55 is formed over the entire circumference. And these
The inner and outer locking grooves 54 and 55 are provided with a second stop having a partially annular shape.
The wheel 56 is hung. This second retaining ring 56
Bending wire made of elastic material such as spring steel and stainless spring steel
Formed into a substantially C-shaped segment
And has elasticity in the direction of expanding the diameter. Such a second stop
The inner ring 56 has the above-mentioned locking grooves in a state where the diameter is elastically widened.
54, 55, the spline shaft
17a is prevented from coming out of the spline hole 13.
You. In the case of this embodiment, the drive shaft member 18
a, the outer end face of the outer race 14 for a constant velocity joint,
Between the inner end of the caulking portion 53 provided at the inner end of the hub 4a
To elastically compress the seal ring 57 in the axial direction.
You. Also, a cylindrical portion 58 formed at the outer end of the hub 4a
A bottomed cylindrical cap 59 is fitted and fixed. Soshi
The cap 59 and the seal ring 57
And the spline shaft 17a and the spline hole 13
To prevent foreign matter such as rainwater from entering the spline engagement part of
To prevent this spline engagement part from rusting.
I have. In the case of such an example, each of the above-described examples is
As compared with the case, the connection operation between the hub 4a and the drive shaft member 18a is
Business can be done easily. That is, in the case of each of the above-described examples, the hub
4 and the drive shaft member 18, the spline shaft 1
A nut 24 (see FIGS. 1 and 6) is screwed into the male screw portion 23 of FIG.
Then, more tightening and laborious work is required. Like this
If the connection work between the drive 4 and the drive shaft member 18 is troublesome,
Wheels in combination with speed joint 2 (see FIGS. 1 and 6)
This causes the cost of the rotary support device to increase. Also, the above male
Rotation support for wheels by the amount of connection between screw part 23 and nut 24
The device becomes larger and heavier. On the other hand,
In this case, the hub 4a and the drive shaft member 18a are connected.
Inside the outer end of the spline hole 13 provided in the hub 4a.
Between the outer peripheral surface and the outer peripheral surface of the outer end of the spline shaft 17a.
All that is required is to cross over the second retaining ring 56. For this reason,
Set of rotary support devices for wheels, combined with point 2a
Easier standing work and reduced assembly costs
In addition, the size and weight can be reduced. In addition, check and repair
At the time of processing, the spline shaft 13
In order to perform the work of extracting 17a efficiently,
The above-described recess shown in FIG.
What is necessary is just to form the concave part similar to the part 41. Furthermore, the outside
Attach an appropriate inclination angle to the axially inner side surface of the side locking groove 55
Then, an impact load is applied to the tip end surface of the spline shaft 17a.
By applying the spline shaft 17a,
It can be easily extracted from the in-hole 13. In each of the above examples, the driving wheels of the automobile are supported.
The case where the present invention is applied to a structure for holding
However, the present invention is not limited to such a structure.
For example, a structure for supporting the driven wheels of a car
The invention can also be implemented. [0034] The present invention is constructed and operated as described above.
Cost reduction by facilitating assembly work and
Mold and weight reduction, and the outer ring comes out of the support hole
To prevent displacement for a long period of time.
Can be secured sufficiently.

【図面の簡単な説明】 【図1】本発明の実施の形態の第1例を、等速ジョイン
トと組み合わせた状態で示す断面図。 【図2】図1のA部拡大断面図。 【図3】第1例で使用する止め輪を、図1〜2の右方又
は左方から見た状態で示す図。 【図4】支持孔に凹入部を形成した構造を示す、図2に
相当する図。 【図5】ナックルから車輪用軸受ユニットを取り外す為
に使用する縮径治具を示す斜視図。 【図6】本発明の実施の形態の第2例を、等速ジョイン
トと組み合わせた状態で示す断面図。 【図7】図6のB部拡大断面図。 【図8】第2例で使用する環状部材の斜視図。 【図9】本発明の実施の形態の第3例を、等速ジョイン
トと組み合わせた状態で示す断面図。 【図10】図9のC部拡大断面図。 【図11】従来構造の1例を示す断面図。 【符号の説明】 1、1a 車輪用軸受ユニット 2、2a 等速ジョイント 3、3a 外輪 4、4a ハブ 5、5a、5b 内輪 6 転動体 7 第一の取付フランジ 8 外輪軌道 9 第二の取付フランジ 10 第一の内輪軌道 11 小径段部 12 第二の内輪軌道 13 スプライン孔 14 等速ジョイント用外輪 15 等速ジョイント用内輪 16 ボール 17、17a スプライン軸 18、18a 駆動軸部材 19 外側係合溝 20 第二のスプライン孔 21 内側係合溝 22 保持器 23 雄ねじ部 24 ナット 25 駆動軸 26 雄スプライン部 27 係止溝 28 止め輪 29 係止段部 30 ナックル 31 嵌合部 32 支持孔 33 通孔 34 ボルト 35 ねじ孔 36、36a、36b 回転部材 37 止め輪 38 内側係合溝 39 外側係合溝 40 ガイド面 41 凹入部 42 縮径治具 43 円環部 44 係合突片 45 ガイド傾斜面 46 環状部材 47 本体部 48 傾斜突部 49 筒部 50 溝部 51 内向鍔部 52 円輪部 53 かしめ部 54 内側係止溝 55 外側係止溝 56 第二の止め輪 57 シールリング 58 筒部 59 キャップ
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a first example of an embodiment of the present invention in a state combined with a constant velocity joint. FIG. 2 is an enlarged sectional view of a portion A in FIG. FIG. 3 is a diagram showing a retaining ring used in the first example as viewed from the right or left in FIGS. FIG. 4 is a view corresponding to FIG. 2, showing a structure in which a concave portion is formed in a support hole. FIG. 5 is a perspective view showing a diameter reducing jig used for removing the wheel bearing unit from the knuckle. FIG. 6 is a sectional view showing a second example of the embodiment of the present invention in a state combined with a constant velocity joint. FIG. 7 is an enlarged sectional view of a portion B in FIG. 6; FIG. 8 is a perspective view of an annular member used in the second example. FIG. 9 is a sectional view showing a third example of the embodiment of the present invention in a state combined with a constant velocity joint. FIG. 10 is an enlarged sectional view of a portion C in FIG. 9; FIG. 11 is a sectional view showing an example of a conventional structure. DESCRIPTION OF SYMBOLS 1, 1a Wheel bearing unit 2, 2a Constant velocity joint 3, 3a Outer ring 4, 4a Hub 5, 5a, 5b Inner ring 6 Rolling element 7 First mounting flange 8 Outer ring raceway 9 Second mounting flange Reference Signs List 10 first inner raceway 11 small diameter step 12 second inner raceway 13 spline hole 14 constant velocity joint outer ring 15 constant velocity joint inner ring 16 ball 17, 17a spline shaft 18, 18a drive shaft member 19 outer engagement groove 20 Second spline hole 21 Inner engagement groove 22 Cage 23 Male screw part 24 Nut 25 Drive shaft 26 Male spline part 27 Lock groove 28 Retaining ring 29 Lock step part 30 Knuckle 31 Fitting part 32 Support hole 33 Through hole 34 Bolt 35 Screw holes 36, 36a, 36b Rotating member 37 Retaining ring 38 Inner engaging groove 39 Outer engaging groove 40 Guide surface 41 Recessed portion 42 Reduced diameter jig 43 Ring part 44 Engagement projection piece 45 Guide inclined surface 46 Annular member 47 Body part 48 Inclined projection part 49 Tube part 50 Groove part 51 Inward flange part 52 Ring part 53 Caulking part 54 Inner locking groove 55 Outer locking groove 56 Second Retaining ring 57 Seal ring 58 Tube part 59 Cap

Claims (1)

【特許請求の範囲】 【請求項1】 懸架装置を構成して車輪を支持する支持
部材と、この支持部材に設けられた支持孔の内径側に支
持された車輪用軸受ユニットとを備え、この車輪用軸受
ユニットは、内周面に外輪軌道を、外周面に上記支持孔
に内嵌する為の嵌合部を、それぞれ有し、使用時にも回
転しない外輪と、外周面の一端寄り部分に車輪を支持す
る為の取付フランジを、同じく中間部に上記外輪軌道と
対向する内輪軌道を、それぞれ有し、使用時に回転する
回転部材と、この内輪軌道と上記外輪軌道との間に転動
自在に設けられた複数個の転動体とを備えたものである
車輪用回転支持装置に於いて、上記支持孔の内周面と上
記嵌合部の外周面との間に設けられて、上記支持部材に
対する上記外輪の軸方向の変位を阻止する係合部材を備
え、この係合部材が、耐食性を有する材料製、又は表面
に防食処理を施した材料製である事を特徴とする車輪用
回転支持装置。
Claims: 1. A vehicle comprising: a support member that constitutes a suspension device and supports a wheel; and a wheel bearing unit supported on an inner diameter side of a support hole provided in the support member. The wheel bearing unit has an outer raceway on the inner peripheral surface, and a fitting portion for fitting the support hole into the support hole on the outer peripheral surface, and the outer race that does not rotate during use, and a portion near one end of the outer peripheral surface. It has a mounting flange for supporting the wheels, and an inner raceway facing the outer raceway in the middle part, and is rotatable between a rotating member that rotates during use and the inner raceway and the outer raceway. And a plurality of rolling elements provided on the wheel, the wheel supporting device is provided between the inner peripheral surface of the support hole and the outer peripheral surface of the fitting portion, the support is provided. An engagement member for preventing axial displacement of the outer ring with respect to the member. For example, the engaging member, the material made or wheel rotation supporting device, characterized in that a material made subjected to anticorrosion treatment to the surface resistant to corrosion.
JP2001332015A 2001-10-30 2001-10-30 Rotary support device for wheel Pending JP2003130074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001332015A JP2003130074A (en) 2001-10-30 2001-10-30 Rotary support device for wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001332015A JP2003130074A (en) 2001-10-30 2001-10-30 Rotary support device for wheel

Publications (1)

Publication Number Publication Date
JP2003130074A true JP2003130074A (en) 2003-05-08

Family

ID=19147499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001332015A Pending JP2003130074A (en) 2001-10-30 2001-10-30 Rotary support device for wheel

Country Status (1)

Country Link
JP (1) JP2003130074A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006342945A (en) * 2005-06-10 2006-12-21 Ntn Corp Wheel bearing device
JP2010203466A (en) * 2009-02-27 2010-09-16 Hiihaisuto Seiko Kk Linear motion guide device
JP2010203465A (en) * 2009-02-27 2010-09-16 Hiihaisuto Seiko Kk Linear motion bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006342945A (en) * 2005-06-10 2006-12-21 Ntn Corp Wheel bearing device
JP2010203466A (en) * 2009-02-27 2010-09-16 Hiihaisuto Seiko Kk Linear motion guide device
JP2010203465A (en) * 2009-02-27 2010-09-16 Hiihaisuto Seiko Kk Linear motion bearing

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