To realize a structure of a hub unit bearing with which a breakage state of a caulking portion is easily grasped.SOLUTION: A hub 3 is made by uniting and fixing a first hub element 22 and a second hub element 23. The first hub element 22 has an inner ring raceway 11a on the axially outer side on an outer peripheral surface, a center hole 24 at a diametrically center portion, a pressed surface 25 on a side surface on the axially outer side, and a boundary edge portion 56 at a boundary between the center hole 24 and the suppressed surface 25. The second hub element 23 is equipped with a base portion 27 that has the inner ring raceway 11b on the axially inner side on the outer peripheral surface, a fitting shaft portion 28 that extends from a diametrically inner side portion of the base portion 27 toward the axially outer side, and is inserted in the center hole 24 of the first hub element 22, and a caulking portion 29 that is adjacent on the axially outer side of the fitting shaft portion 28 and presses the pressed surface 25. The caulking portion 29 is equipped with a slit 34 communicating a boundary edge portion 56 and the outside.SELECTED DRAWING: Figure 1
【課題】かしめ部の破損状況を把握しやすいハブユニット軸受の構造を実現する。【解決手段】ハブ3は、第1ハブ素子22と第2ハブ素子23とを結合固定してなる。 第1ハブ素子22は、外周面に軸方向外側の内輪軌道11a、径方向中心部に中心孔24、軸方向外側の側面に被抑え面25、及び中心孔24と被抑え面25との境界に境界縁部56を有する。第2ハブ素子23は、外周面に軸方向内側の内輪軌道11bを有する基部27と、基部27の径方向内側部から軸方向外側に向けて伸長し、かつ、第1ハブ素子22の中心孔24に挿入した嵌合軸部28と、嵌合軸部28の軸方向外側に隣接し、被抑え面25を抑え付けたかしめ部29とを備える。かしめ部29は、境界縁部56と外部とを連通させるスリット34を備える。【選択図】図1
HUB UNIT BEARING AND MANUFACTURING METHOD THEREOF, AND VEHICLE AND MANUFACTURING METHOD THEREOF
ハブユニット軸受及びその製造方法、車両及びその製造方法
2022-02-16
Patent
Electronic Resource
Japanese
IPC: | F16C SHAFTS , Wellen / 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 / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen |