Title:
ROLLING BEARING, SHAFT ROTATING MECHANISM USING THE ROLLING BEARING, LINEAR ACTUATOR USING THE ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2008/041427
Kind Code:
A1
Abstract:
A rolling bearing comprises an inner ring (2), an outer ring (3), and rolling elements
(4) interposed therebetween. The inner diameter of the inner ring (2) is larger
than the outer diameter of a shaft member (6) disposed inside the inner ring. The
shaft member (6) has a size allowing the rotation and the axial movement thereof.
An annular body (5) formed of a member with a higher elastic modulus than the inner
ring (2) is installed on the inner peripheral surface of the inner ring (2). The
annular body (5) is so formed that there is a gap between its inner surface and the
outer surface of the shaft member (6) to allow the rotation and the axial movement
of the shaft member (6). The coefficient of friction of the inner peripheral
surface of the annular body (5) is lower than that of the inner peripheral surface
of the inner ring (2). The rolling bearing (1) is applied to a support member for
supporting the shaft member at the axial intermediate position in a device such
as a linear actuator having a shaft rotating mechanism for rotating the shaft
member. Consequently, the axial intermediate portion of the rotating shaft
member can be supported while the shaft member is smoothly rotated.
Inventors:
IIDA KATSUYA (JP)
FURUSAWA RYUJI (JP)
FURUSAWA RYUJI (JP)
Application Number:
PCT/JP2007/066228
Publication Date:
April 10, 2008
Filing Date:
August 22, 2007
Export Citation:
Assignee:
THK CO LTD (JP)
IIDA KATSUYA (JP)
FURUSAWA RYUJI (JP)
IIDA KATSUYA (JP)
FURUSAWA RYUJI (JP)
International Classes:
F16C31/04; F16C19/06; F16C27/04; F16C29/06; F16H25/22
Foreign References:
| JPS61170717U | 1986-10-23 | |||
| JPH09196060A | 1997-07-29 | |||
| JPH04135237U | 1992-12-16 | |||
| JP2005337444A | 2005-12-08 | |||
| JPS6258413U | 1987-04-11 | |||
| JP2005249120A | 2005-09-15 |
Attorney, Agent or Firm:
ISHIKAWA, Yasuo (17-11 Shiba 2-chome, Minato-k, Tokyo 14, JP)
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