OIL SEAL MEMBER AND METHOD FOR MANUFACTURING SAME

WIPO Patent Application WO/2012/157383

A1

An oil seal member consisting of sintered metal and capable of effectively preventing oil from entering the inside can be mass manufactured without a particular increase in cost. An oil seal member (1) consisting of sintered metal liquid-tightly defines a hydraulic chamber (106) formed between a rotor (101) and a housing (103). The oil seal member (1) is formed from a sintered metal material for bearings and comprises: a pair of side surfaces (4, 4) which face each other in the rotation direction of the rotor (101) and which are parallel to each other; and a surrounding surface comprising surfaces which extend between both the side surfaces (4, 4) and one of which slides on the inner diameter surface of the housing (103). The surrounding surface comprises: an upper surface (2) having an irregular surface shape; a lower surface (3) sliding on the housing (103); a pair of end surfaces (5, 5); and a pair of sloped surfaces (6, 6). In the oil seal member (1), each one of the pair of side surfaces (4, 4) and the surrounding surface is a molded surface.

MOURI TOSHIHIKO (JP)

PCT/JP2012/060267

November 22, 2012

April 16, 2012

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NTN TOYO BEARING CO LTD (JP)
MOURI TOSHIHIKO (JP)

F16J15/16; B22F3/24; F01L1/356; F16J15/20

JP2007092100A	2007-04-12
JP2006258185A	2006-09-28
JPS58149471A	1983-09-05
JP2009138599A	2009-06-25
JP2002122008A	2002-04-26
JPS55112164A	1980-08-29
JP2010275962A	2010-12-09
JPH02215916A	1990-08-28

SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)

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