PROBLEM TO BE SOLVED: To provide a wheel bearing device which is elongated in a life of a bearing by enhancing the sealing performance of a seal without increasing seal torque.SOLUTION: A seal 8 comprises: a core grid 15 which is pressure-inserted into an internal periphery of an end part of an outer member 10; a first side lip 16a which is joined to the core grid, inclined to the outside of a radial direction, and opposes a metal ring 17 which is attached to a base part 18 of a wheel attachment flange 4 with a clearance in an axial direction; a second side lip 16b which is formed at an inside diameter side of the first side lip, and slide-contacts with the first side lip with a fastening margin in the axial direction; and a third side lip 19a which is inclined to the outside of a radial direction toward the wheel attachment flange 4 from the base part 19 which covers an outer surface of an outer edge of the core grid 15. A tip of the core grid is formed flat, and opposes a side face 4b of the wheel attachment flange 4 with a clearance in the axial direction, a first labyrinth seal 20 is constituted, and an outer edge of the metal seal 17 opposes a seal member 16 with a clearance in the axial direction, thus forming a labyrinth seal 25.SELECTED DRAWING: Figure 2
【課題】シールトルクを増大させることなくシールの密封性を高めて軸受の長寿命化を図った車輪用軸受装置を提供する。【解決手段】シール8が、外方部材10の端部内周に圧入される芯金15と、これに接合され、径方向外方に傾斜して形成され、車輪取付フランジ4の基部18に装着された金属環17に軸方向すきまをもって対峙する第1のサイドリップ16aと、この内径側に形成され、軸方向シメシロをもって摺接する第2のサイドリップ16bおよび芯金15の外縁の外表面を覆う基部19から車輪取付フランジ4に向って径方向外方に傾斜して形成された第3のサイドリップ19aを備え、この先端部が平坦に形成され、車輪取付フランジ4の側面4bに軸方向すきまをもって対峙され、第1のラビリンスシール20が構成されると共に、金属環17の外縁がシール部材16に軸方向すきまをもって対峙され、ラビリンスシール25が構成されている。【選択図】図2
WHEEL BARING DEVICE
車輪用軸受装置
2017-03-09
Patent
Electronic Resource
Japanese
Baring Asset Management Top 3,000 Charities 1997:
Emerald Group Publishing | 1997
|Baring Asset Management Top 3000 Charities 1998: The Guide to UK Charities
Emerald Group Publishing | 1999
|The principle of the commutation-act established by facts : By Francis Baring, Esquire
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1786
|The principle of the commutation-act established by facts : By Francis Baring, Esquire
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1786
|