To realize a structure of a hub unit bearing that can reduce the weight while suppressing an increase in cost.SOLUTION: A hub ring 8 includes: an inner recess 14 which is disposed at a center part of an axial inner part, and is open on an axial inside; and a fixed cylindrical part 17 which is disposed on a radial outside of the inner recess 14 and defines an inner peripheral surface of the inner recess 14. The fixed cylindrical part 17 is composed of: a fitting cylindrical part 18 provided at a portion overlapping with an inner ring 9 in the radial direction; and a caulking part 19. An inner peripheral surface of the fitting cylindrical part 18 includes: an inner peripheral side small diameter surface 20 arranged on an axial outer part; an inner peripheral side large diameter surface 21 which is arranged on an axial inner part, and has an internal diameter larger than that of the inner peripheral side small diameter surface 20; and an inner peripheral side connection surface 22 which connects the inner peripheral side small diameter surface 20 and the inner peripheral side large diameter surface 21. Further, the inner peripheral side connection surface 22, the inner peripheral side large diameter surface 21, and an inner peripheral surface of the caulking part 19 are machining surfaces, whereas the inner peripheral side small diameter surface 20 is a forging surface.SELECTED DRAWING: Figure 1
【課題】コスト上昇を抑えつつ、軽量化を図ることができる、ハブユニット軸受の構造を実現する。【解決手段】ハブ輪8を、軸方向内側部の中央部に配置され、軸方向内側に開口した内側凹部14と、内側凹部14の径方向外側に配置され、内側凹部14の内周面を画成する固定筒部17とを有するものとし、固定筒部17を、内輪9と径方向に重畳する部分に備えられた嵌合筒部18と、かしめ部19とから構成する。嵌合筒部18の内周面を、軸方向外側部に配置された内周側小径面20と、軸方向内側部に配置され、かつ、内周側小径面20よりも大きな内径を有する内周側大径面21と、内周側小径面20と内周側大径面21とをつなぐ内周側接続面22とを有するものとする。そして、内周側接続面22、内周側大径面21及びかしめ部19の内周面を機械加工面とし、内周側小径面20を鍛造面とする。【選択図】図1
HUB UNIT BEARING AND MANUFACTURING METHOD THEREOF
ハブユニット軸受及びその製造方法
2023-09-14
Patent
Electronic Resource
Japanese
IPC: | B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B60B VEHICLE WHEELS , Räder für Fahrzeuge / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / F16C SHAFTS , Wellen |
HUB UNIT BEARING AND MANUFACTURING METHOD THEREOF, AND VEHICLE AND MANUFACTURING METHOD THEREOF
European Patent Office | 2022
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