To provide a wheel bearing device which suppresses swing of a wheel mounting flange due to bolt fastening by specifying dimensional relation of each section of the wheel mounting flange.SOLUTION: A vehicle wheel mounting flange 3b of a vehicle wheel bearing device 1 includes: a plurality of screw holes 31 into which wheel bolts that fix a wheel and a brake rotor are screwed; and a rib 35 provided on an inner side circumferential edge of the screw holes 31. When A represents a nominal diameter of the screw hole 31, B represents a width direction dimension of the rib 35 in a cross-section that passes through a center of the screw hole 31 and that is tangent to a pitch circle of the screw hole 31, and C represents a thickness direction dimension of the vehicle wheel mounting flange 3b that passes through the rib 35, B/A≥1.7 and C/A≥0.8 are satisfied.SELECTED DRAWING: Figure 3

    【課題】車輪取付フランジの各部の寸法関係を規定することにより、ボルト締結による車輪取付フランジの振れを抑制する車輪用軸受装置を提供する。【解決手段】車輪用軸受装置1の車輪取付フランジ3bは、ホイール及びブレーキロータを固定するホイールボルトが螺合される複数のネジ孔31と、ネジ孔31のインナー側周縁に設けられたリブ35と、を有する。ネジ孔31の呼び径をAとし、ネジ孔31の中心を通りネジ孔31のピッチ円に接する断面において、リブ35の幅方向寸法をB、リブ35を通る車輪取付フランジ3bの厚み方向寸法をCとすると、B/A≧1.7かつC/A≧0.8である。【選択図】図3


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    Title :

    VEHICLE WHEEL BEARING DEVICE


    Additional title:

    車輪用軸受装置


    Contributors:

    Publication date :

    2023-01-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16C SHAFTS , Wellen



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