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Title:
BEARING BUSH AND COMPOUND MOVEMENT DEVICE USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/103516
Kind Code:
A1
Abstract:
A bearing bush enabling the excellent advancing and retarding motions of a shaft member by eliminating a clearance between the bearing bush and the shaft member to exclude rattling therebetween, capable of reducing a load on dimensional control for both the bearing bush and the shaft member, and manufacturable at low cost and a compound movement device using the bearing bush. The bearing bush (4) pivotally supporting the reciprocating motion of the shaft member (1) in the axial direction comprises an accepting hole through which the shaft member (1) is inserted. Grooves (40) are repeatedly formed, at specified intervals, in the inner peripheral surface of the bearing bush which faces the accepting hole. The inner diameter of the accepting hole is formed equal to or smaller than the outer diameter of the shaft member (1) to press-fit the bearing bush to the outer peripheral surface of the shaft member (1) by so-called a shrink fitted state.

Inventors:
Michioka, Hidekazu c/o THK CO. LTD. (11-6, Nishigotanda 3-chome, Shinagawa-k, Tokyo 03, 14185, JP)
Iida, Katsuya c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
Matsumoto, Takashi c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
Ishizaka, Masayuki c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
Application Number:
PCT/JP2005/007534
Publication Date:
November 03, 2005
Filing Date:
April 20, 2005
Export Citation:
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Assignee:
THK CO., LTD. (11-6, Nishigotanda 3-chome Shinagawa-k, Tokyo 03, 14185, JP)
Michioka, Hidekazu c/o THK CO. LTD. (11-6, Nishigotanda 3-chome, Shinagawa-k, Tokyo 03, 14185, JP)
Iida, Katsuya c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
Matsumoto, Takashi c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
Ishizaka, Masayuki c/o Kofu Works (THK CO. LTD., 754, Nakadate, Tamaho-cho, Nakakoma-gu, Yamanashi 01, 40938, JP)
International Classes:
F16C33/10; F16C23/04; F16C29/02; F16C29/06; F16C31/02; F16C31/06; F16C33/20; F16C35/02; H02K41/02; H02K41/03; (IPC1-7): F16C31/02; F16C29/02; F16C29/06; F16C31/06; F16C33/10; F16C33/20; F16C35/02
Foreign References:
JPH0996331A
JPH029328U
JPS5894630A
JP2002307368A
JPH07293559A
JP2002027732A
Attorney, Agent or Firm:
Ide, Tetsuroh (79-402, Ohtamachi 6-chome Naka-ku Yokohama-shi, Kanagawa 11, 23100, JP)
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