To provide a wheel bearing device which allows easy machining so as to spline-fit a wheel bearing to a constant velocity universal joint.SOLUTION: In a wheel bearing device 1, a through hole 3e of a hub wheel 3 has a first hole 31 in which a spline-fittable recess 3h is formed, and a second hole 32 which has a diameter equal to or larger than that of the first hole 31. A protrusion 24 which can be spline-fitted to the recess 3h is formed on an outer peripheral surface of a stem section 23 in a constant velocity universal joint 20. The protrusion 24 has a first protrusion 25 which is spline-fitted to the recess 3h in a state of adhering to the whole of the recess, and a second protrusion 26 which is positioned on an outer side of the first protrusion 25 and can be spline-fitted to the recess 3h in a state of having a gap m with the recess in a radial direction, a circumferential direction or both of the radial direction and the circumferential direction.SELECTED DRAWING: Figure 1
【課題】車輪用軸受と等速自在継手とをスプライン嵌合するための加工を容易にでき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においては、ハブ輪3の貫通孔3eは、スプライン嵌合可能な凹部3hが形成される第1孔31と、第1孔31以上の径を有する第2孔32と、を備え、等速自在継手20におけるステム部23の外周面には、凹部3hとスプライン嵌合可能な凸部24が形成され、凸部24は、凹部3hに対して全体的に密着した状態でスプライン嵌合する第1凸部25と、第1凸部25よりもアウター側に位置し、凹部3hに対して径方向、周方向、または径方向と周方向との両方において隙間mを有した状態でスプライン嵌合可能な第2凸部26とを備える。【選択図】図1
WHEEL BEARING DEVICE
車輪用軸受装置
2024-03-07
Patent
Elektronische Ressource
Japanisch