Title:
ORIGIN SENSING STRUCTURE OF MOTOR-DRIVEN VALVE
Document Type and Number:
Japanese Patent JP3037831
Kind Code:
B2
Abstract:
PURPOSE: To provide a motor-driven valve with which the full valve closing position or opening position can be sensed using a simple structure and which can emit an origin signal.
CONSTITUTION: An origin sensing structure of a motor driven valve has a magnetism sensing means 11 located in an appropriate position on the outside surface of a case 1 or lid 7 made of a non-magnetic substance, and also has an arbor 8 on which a movable member 13 fitted at the tip with a magnet 12 is mounted rotatably. The movable member 13 or a magnet 12 is arranged so that it can contact a protruding piece 10a positioned over a stopping member 10, and a spring means 14 is furnished so that the magnet 12 is put at normal times remotely from the operating scope of the magnetism sensing means 11 and contacts a magnet contacting piece 17.
Inventors:
Haruo Yasuda
Osamu Yamaguchi
Osamu Yamaguchi
Application Number:
JP21562092A
Publication Date:
May 08, 2000
Filing Date:
July 20, 1992
Export Citation:
Assignee:
Pacific Industry Co., Ltd.
International Classes:
F16K31/04; F16K37/00; F16K51/00; (IPC1-7): F16K31/04; F16K37/00; F16K51/00