Title:
ROTATION DAMPER
Document Type and Number:
WIPO Patent Application WO/2008/053570
Kind Code:
A1
Abstract:
A rotation damper adapted such that air mixed in housings during assembly is not
excessively compressed to prevent production of noise by the air even if a rotator
is rotated in both directions and that the air is collected and made to stay at a
specific portion to reduce an influence of the air to generated torque, making
variation in the torque as small as possible. The rotation damper (D) has housings
(11, 51), silicone oil (21) received in the housings (11, 51), a rotor (31) received
in the housings (11, 51) and having a resistance section (36) that is provided
on a shaft (32) projecting from the housings (11, 51) and moves in the silicone
oil (21) in the housings (11, 51), and an O-ring (61) for preventing the silicone
oil (21) from leaking between the shaft (32) and the housing (51). A circumferential
groove (54) is formed in the inner surface of the housing (51).
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Inventors:
YAMAGUCHI KEIJI (JP)
JINBO NAOTO (JP)
TOMITA SHIGEMITSU (JP)
OKABAYASHI SYUNSUKE (JP)
KITAKAWA AYAKO (JP)
TOU BUNKIN (JP)
HIRANO YUKI (JP)
JINBO NAOTO (JP)
TOMITA SHIGEMITSU (JP)
OKABAYASHI SYUNSUKE (JP)
KITAKAWA AYAKO (JP)
TOU BUNKIN (JP)
HIRANO YUKI (JP)
Application Number:
PCT/JP2006/322217
Publication Date:
May 08, 2008
Filing Date:
October 31, 2006
Export Citation:
Assignee:
NIFCO INC (JP)
YAMAGUCHI KEIJI (JP)
JINBO NAOTO (JP)
TOMITA SHIGEMITSU (JP)
OKABAYASHI SYUNSUKE (JP)
KITAKAWA AYAKO (JP)
TOU BUNKIN (JP)
HIRANO YUKI (JP)
YAMAGUCHI KEIJI (JP)
JINBO NAOTO (JP)
TOMITA SHIGEMITSU (JP)
OKABAYASHI SYUNSUKE (JP)
KITAKAWA AYAKO (JP)
TOU BUNKIN (JP)
HIRANO YUKI (JP)
International Classes:
F16F9/12
Foreign References:
| JP2005114154A | 2005-04-28 | |||
| JP2005090535A | 2005-04-07 | |||
| JPH0744807U | 1995-11-28 | |||
| JPS61133134U | 1986-08-20 | |||
| JPS5761247U | 1982-04-12 |
Attorney, Agent or Firm:
FUKUDA, Kenzo et al. (6-13Nishishinbashi 1-chome,Minato-k, Tokyo 03, JP)
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