PROBLEM TO BE SOLVED: To provide a bearing device and a bearing structure for a wheel capable of lubricating a spline fitting portion without forming a lubricant supply passage on a constant velocity universal joint.SOLUTION: In a bearing device 1 for a wheel including an outer ring 2 on which a double-row outer rolling surfaces 2c, 2d are integrally formed on an inner periphery, an inner member having a hub ring 3 provided with a small-diameter step portion 3a extended in an axial direction on an outer periphery, and having a female spline 8 to which an outer joint member 100a of a contant velocity universal joint 100 is spline-fitted on an inner periphery, and at least one inner ring 4 press-fitted to the small-diameter step portion 3a, and further provided with a double-row inner rolling surfaces 3f, 4a opposed to the double-row outer rolling surfaces 2c, 2d, on an outer periphery, and a double-row rolling elements 5a, 5b rollably accommodated between the inner member and the outer ring 2, short fiber Fi is disposed on at least one of the female spline small-diameter portion 8a and a female spline large-diameter portion 8b of the female spline 8.SELECTED DRAWING: Figure 2
【課題】等速自在継手に潤滑剤の供給路を形成することなくスプライン嵌合部を潤滑することができる車輪用軸受装置および軸受構造を提供する。【解決手段】内周に複列の外側転走面2c・2dが一体に形成された外輪2と、外周に軸方向に延びる小径段部3aが形成され、内周に等速自在継手100の外側継手部材100aがスプライン嵌合される雌スプライン8が形成されるハブ輪3、および前記小径段部3aに圧入された少なくとも一つの内輪4を有し、外周に複列の外側転走面2c・2dに対向する複列の内側転走面3f・4aが形成された内方部材と、前記内方部材と外輪2のそれぞれの転走面間に転動自在に収容された複列の転動体5a・5bと、を備えた車輪用軸受装置1において、雌スプライン8における雌スプライン小径部8aと雌スプライン大径部8bとのうち少なくとも一方に短繊維Fiが設けられている。【選択図】図2
BEARING DEVICE AND BEARING STRUCTURE FOR WHEEL
車輪用軸受装置および軸受構造
2018-08-09
Patent
Electronic Resource
Japanese