To materialize structure in which the formation range of a coating film covering the surface of an axial outer portion of a pilot section can be regulated with high accuracy.SOLUTION: A pilot section 9 has an outer-diameter side small diameter surface portion 10 provided on the outer periphery of an axial outer portion, an outer-diameter side small diameter surface portion 11 provided on the outer periphery of an axial inner portion, an outer-diameter side difference-in-level surface portion 12 which connects the outer-diameter side small diameter surface portion 10 to the outer-diameter side large diameter surface portion 11, an outer-diameter side ridge portion 28 provided in a connection portion in which the outer-diameter side large diameter surface portion 11 is connected to the outer large-diameter side difference-in-level surface portion 12, an inner-diameter side large diameter surface portion 13 provided in the inner periphery of an axial outer portion, an inner-diameter side difference-in-level surface portion 14 folded toward a diametral inner side from an end portion of the inner-diameter side of an inner-diameter large diameter surface portion 13, and an inner-diameter side ridge portion 29 provided on a connection portion in which the inner-diameter side difference-in-level surface portion 14 is connected to a portion located on an axial inner side than the inner-diameter side difference-in-level surface portion 14 out of the inner periphery of the pilot section 9. Further, out of the pilot section 9, at least the outer-diameter side small diameter surface portion 10 and the inner-diameter side large diameter surface portion 13 are covered with a coating film 16.SELECTED DRAWING: Figure 2
【課題】パイロット部の軸方向外側部分の表面を覆う塗膜の形成範囲を精度よく規制することができる構造を実現する。【解決手段】パイロット部9は、軸方向外側部分の外周面に備えられた外径側小径面部10と、軸方向内側部分の外周面に備えられた外径側大径面部11と、外径側小径面部10と外径側大径面部11とを接続する外径側段差面部12と、外径側大径面部11と外径側段差面部12との接続部に備えられた外径側稜部28と、軸方向外側部分の内周面に備えられた内径側大径面部13と、内径側大径面部13の軸方向内側の端部から径方向内側に向けて折れ曲がった内径側段差面部14と、内径側段差面部14とパイロット部9の内周面のうちで内径側段差面部14よりも軸方向内側に位置する部分との接続部に備えられた内径側稜部29を有する。さらに、パイロット部9のうち、少なくとも外径側小径面部10と内径側大径面部13とを塗膜16により覆う。【選択図】図2
HUB UNIT BEARING AND MANUFACTURING METHOD THEREOF
ハブユニット軸受およびその製造方法
26.09.2022
Patent
Elektronische Ressource
Japanisch
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
HUB UNIT BEARING AND MANUFACTURING METHOD THEREOF, AND VEHICLE AND MANUFACTURING METHOD THEREOF
Europäisches Patentamt | 2022
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