Title:
電空変換式空気レギュレータ
Document Type and Number:
Japanese Patent JP4275463
Kind Code:
B2
Abstract:
An electro-pneumatic air pressure regulator includes a primary pressure introduction port (12), a secondary pressure output port (13), a pilot pressure chamber (30), a main valve (15) for opening and closing a communicating conduit (14), a floating piston (20) which actuates the main valve, a nozzle conduit (46) via which the pilot pressure chamber (30) is communicatively connected to the atmosphere, a flapper (40) which includes a leaf spring (40a) facing an open end of the nozzle conduit, and an electromagnetic drive system (42) which deforms the leaf spring to vary a position of the flapper relative to the open end of the nozzle conduit in accordance with the magnitude of an analogue input signal. The flapper includes a conical projection which projects toward the open end of the nozzle conduit. A conical recess corresponding to the conical projection is formed on an end face of the nozzle conduit around the open end thereof.
Inventors:
Uminuma Masakuni
Toshikazu Aoki
Keiji Tamaki
Uematsu Katsuo
Tomomasa Fujita
Hiroshi Kinda
Akihiro Hayashi
Mitsuaki Nakanishi
Toshikazu Aoki
Keiji Tamaki
Uematsu Katsuo
Tomomasa Fujita
Hiroshi Kinda
Akihiro Hayashi
Mitsuaki Nakanishi
Application Number:
JP2003158753A
Publication Date:
June 10, 2009
Filing Date:
June 04, 2003
Export Citation:
Assignee:
Fujikura Rubber Industry Co., Ltd.
International Classes:
F15B5/00; F15B3/00; G05D16/20
Domestic Patent References:
| JP61142901U | ||||
| JP57112912U | ||||
| JP2001208239A | ||||
| JP51087184U |
Attorney, Agent or Firm:
Kunio Miura
Iwao Hirayama
Iwao Hirayama