To provide a wheel bearing device which can suppress the occurrence of a pressure-insertion abnormality of a protrusion of an outside joint member with respect to a second recess.SOLUTION: In a wheel bearing device 1 having a wheel bearing 10 having an outer ring 2 and an inner member composed of a hub ring 3 and an inner ring 4, a constant velocity universal joint 20 having an outside joint member 21, and a bolt 41 for fastening the outside joint member 21 to the hub ring 3, a stem part 27 being a fitment part of the outside joint member 21 with respect to the hub ring 3 has a plurality of protrusions 28 extending in an axial direction, an axial hole 3e of the hub ring 3 is formed larger than the protrusions 28 in a diameter, and the wheel bearing device has a plurality of first recesses 35 for guiding the protrusions 28 when the outside joint member 21 is fit to the hub ring 3, a plurality of second recesses 36 which are arranged while adjoining outer sides of the first recesses 35 in the axial direction, formed smaller than the protrusions 28 in diameters, and can be fit to the protrusions 28 while having fastening margins, and step faces 37 formed at boundary parts between the first recesses 35 and the second recesses 36, and vertical with respect to the axial direction.SELECTED DRAWING: Figure 2
【課題】外側継手部材における凸部の第2凹部に対する圧入異常の発生を抑制できる車輪用軸受装置を提供する。【解決手段】外輪2とハブ輪3および内輪4からなる内方部材とを有する車輪用軸受10と、外側継手部材21を有する等速自在継手20と、外側継手部材21をハブ輪3に締結するボルト41とを備えた車輪用軸受装置1であって、外側継手部材21のハブ輪3に対する嵌合部であるステム部27は、軸方向に延びる複数の凸部28を有しており、ハブ輪3の軸孔3eは、凸部28よりも大径に形成され、外側継手部材21がハブ輪3に嵌合される際に凸部28を案内する複数の第1凹部35と、軸方向において第1凹部35のアウター側に隣接して配置され、凸部28よりも小径に形成されるとともに凸部28に対して締め代を有して嵌合可能な複数の第2凹部36と、第1凹部35と第2凹部36との境界部に形成され、軸方向に対して垂直な段差面37とを有する。【選択図】図2
WHEEL BEARING AND WHEEL BEARING DEVICE
車輪用軸受および車輪用軸受装置
2022-05-16
Patent
Electronic Resource
Japanese
Wheel bearing and a wheel bearing apparatus having the wheel bearing
European Patent Office | 2015
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