RETAINER AND BALL BEARING

WIPO Patent Application WO/2022/196344

A1

[Problem] To provide a crown retainer made of a synthetic resin with which it is possible to reduce the increase in torque and the torque fluctuation that occur due to grease getting in between balls and raceway surfaces and between the balls and retainer pockets during high-speed rotation and high-speed shaking motion. [Solution] The back surface of a first retaining hook 121 of a first pocket 141 and the back surface of a second retaining hook 122 of an adjacent second pocket 142 face each other, a flat part 15 is formed between the first retaining hook 121 and the second retaining hook 122, an inner grease scatter prevention wall 16 connected to the first retaining hook 121 is formed along the circumferential direction on the inner peripheral side of the flat part 15, an outer grease scatter prevention wall 17 connected to the second retaining hook 122 is formed along the circumferential direction on the outer peripheral side of the flat part 15, the inner grease scatter prevention wall 16 separates from the second retaining hook 122 to form an inner slit 16a, and the outer grease scatter prevention wall 17 separates from the first retaining hook 121 to form an outer slit 17a.

JP7206135	rolling bearing device
WO/2012/121339	LUBRICANT DISTRIBUTION ACQUISITION DEVICE AND LUBRICANT DISTRIBUTION ACQUISITION METHOD
WO/2009/093400	BALL BEARING FOR CLUTCH RELEASE BEARING DEVICE

SHIRAHATA SATOSHI (JP)
SATO NOBUHIRO (JP)
YAZAWA EIICHI (JP)

PCT/JP2022/008600

September 22, 2022

March 01, 2022

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MINEBEA MITSUMI INC (JP)

F16C19/16; F16C33/41; F16C33/66

JPH04344144A	1992-11-30
JP2002276669A	2002-09-25
JPH0456219U	1992-05-14
JP2008045572A	2008-02-28
JP2001020957A	2001-01-23
JP2004286060A	2004-10-14

SUENARI, Mikio (JP)

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