Title:
AIR DAMPER
Document Type and Number:
WIPO Patent Application WO/2010/131682
Kind Code:
A1
Abstract:
Provided is an air damper wherein the damping force can be stabilized. When a rod member (16) is extended outwards from a cylinder member (20), a suction plate member (60) comes into abutment with an opposite surface (56) of a piston member (30), closing an air passage (28), and the air passage which provides communication between an air chamber (26) and the outside is reduced to an orifice part (42). On the other hand, when the rod member (16) is pushed into the cylinder member (20), the suction plate member (60) moves away from the opposite surface (56) of the piston member (30), opening the air passage (28). As a result, the air passage (28) can be opened and closed in the intended fashion, and the damping force can be stabilized to a greater extent than a conventional structure in which an O-ring rolls under the friction force with the inner peripheral surface of the cylinder in order to open/close the air passage.
Inventors:
OGAWA ATSUSHI (JP)
Application Number:
PCT/JP2010/058053
Publication Date:
November 18, 2010
Filing Date:
May 12, 2010
Export Citation:
Assignee:
NIFCO INC (JP)
OGAWA ATSUSHI (JP)
OGAWA ATSUSHI (JP)
International Classes:
F16F9/34; F16F9/02; F16F9/32
Foreign References:
| JPH01133537U | 1989-09-12 | |||
| JP2008151294A | 2008-07-03 | |||
| JP2006052848A | 2006-02-23 | |||
| JPH08105481A | 1996-04-23 | |||
| JP2001152736A | 2001-06-05 | |||
| JP2000282745A | 2000-10-10 | |||
| JPS5779208U | 1982-05-15 | |||
| JPS5759237U | 1982-04-07 |
Attorney, Agent or Firm:
NAKAJIMA, Jun et al. (JP)
Nakajima 淳 (JP)
Nakajima 淳 (JP)
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Claims: