ACTUATOR, VALVE, AND FLUID CONTROL DEVICE

• Main Authors: YUHARA, Tomoko, HIROSE, Takashi, NAKAZAWA, Masahiko, NAKAMURA, Nobuo
• Format: Patent
• Language: English; French; German
• Published: 09.06.2021
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DEVICES FOR VENTING OR AERATING; ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

An art which can amplify a displacement amount of a piezoelectric element and can realize a normally closed state of a valve device is provided. In a displacement amplification mechanism 30, in a direction orthogonal to an axis of a stem 7, a bent portion 31H which is a first point-of-effort portion is located between an outer end portion 31F which is a first fulcrum portion and an inner end portion 31G which is a first point-of-load portion, a bent portion 34H which is a second fulcrum portion is located between an outer end portion 34F which is a second point-of-effort portion and an inner end portion 34G which is a second point-of-load portion, and a distance between the bent portion 34H and the inner end portion 34G is configured longer than the distance between the bent portion 34H and the outer end portion 34F. By means of displacement of an intermediate member 33 to each of the second levers 34 side, the inner end portion 34G of each of the second levers 34 is displaced toward the stem 7, whereby the stem 7 moves toward a piezoelectric element 5.