Title:
BEARING DEVICE FOR A WHEEL
Document Type and Number:
WIPO Patent Application WO/2011/037183
Kind Code:
A1
Abstract:
Provided is a bearing device for a wheel, whereby the sealing performance of a seal is improved. Said seal (8) comprises a metal core (12) and a seal member (13) that is joined to the metal core. The metal core comprises: a contact section (12a) that presses up against an end of an outer member (5); an inside section (12b) that extends radially inwards from the contact section; and a disc-shaped gate section (12c) that extends radially outwards from the contact section (12a). The seal member is a single unit comprising: a side lip (13a) that extends radially outwards at a slant; a dust lip (13b) that extends radially outwards at a slant radially inwards of the side lip; and a grease lip (13c) that extends at a slant towards the inside of the bearing. The base section (6b) of a wheel-attachment flange (6) is formed into a curve with an arc-shaped cross-section and the side lip (13a), the dust lip (13b), and the grease lip (13c) make sliding contact therewith. The aforementioned gate section (12c) faces a lateral surface (6c) of the wheel-attachment flange (6) and an end surface (5c) of the outer member (5), with prescribed gaps therebetween in the axial direction, forming a labyrinth seal (14) and a circular drainage groove (15), respectively.
Inventors:
MATSUKI MASAAKI (JP)
YAMADA TOMOYA (JP)
SUZUKI SYOUGO (JP)
YAMADA TOMOYA (JP)
SUZUKI SYOUGO (JP)
Application Number:
PCT/JP2010/066548
Publication Date:
March 31, 2011
Filing Date:
September 24, 2010
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
MATSUKI MASAAKI (JP)
YAMADA TOMOYA (JP)
SUZUKI SYOUGO (JP)
MATSUKI MASAAKI (JP)
YAMADA TOMOYA (JP)
SUZUKI SYOUGO (JP)
International Classes:
B60B35/14; B60B35/02; B60B35/18; F16C19/18; F16C33/78; F16C33/80; F16J15/32; F16J15/447
Domestic Patent References:
| WO2007138738A1 | 2007-12-06 | |||
| WO2007122809A1 | 2007-11-01 |
Foreign References:
| JP2005147298A | 2005-06-09 | |||
| JP2009121505A | 2009-06-04 | |||
| JP2008032067A | 2008-02-14 | |||
| JP2008157327A | 2008-07-10 | |||
| JP2008163978A | 2008-07-17 | |||
| JP2007132454A | 2007-05-31 | |||
| JP2008298106A | 2008-12-11 | |||
| JP2003049852A | 2003-02-21 |
Attorney, Agent or Firm:
KOSHIKAWA, TAKAO (JP)
Takao Koshikawa (JP)
Takao Koshikawa (JP)
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