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公开(公告)号：JP5302164B2
公开(公告)日：2013-10-02
申请号：JP2009252835
申请日：2009-11-04
Applicant: 長野計器株式会社
Abstract: PROBLEM TO BE SOLVED: To provide a microdifferential pressure gauge which is improved in impact resistance and in displacement transmission efficiency, and which has high measurement accuracy. SOLUTION: The microdifferential pressure gauge 1 includes a case 10, a diaphragm 2 and a displacement transmission mechanism 4 for transmitting displacements of the diaphragm, and the displacement transmission mechanism is equipped with a rotation-conversion mechanism 43, which converts the displacement transmitted from the diaphragm into rotation; a pointer attached to the mechanism; and a flat spring 41, the one end of which is fixed inside the case and to the other end of which a magnet is attached and a connecting member 45, which connects the diaphragm with the flat spring at the center axis of the diaphragm. The displacement of the diaphragm is transmitted to the magnet via the flat spring; the rotation-conversion mechanism has a helical body which is held by a bearing and is connected magnetically so that it turns according to the movement of the magnet; while the pointer turns, according to the rotation of the helical body, and the gauge has a tubular member 5, through which the connecting member is inserted and is set freely separable between the flat spring and the diaphragm. COPYRIGHT: (C)2011,JPO&INPIT
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