PNEUMATIC ACTUATOR FOR USE IN VIBRATION DAMPING DEVICE AND FLUID-FILLED VIBRATION DAMPING DEVICE USING IT

• Main Authors: TANAKA EIJI, MIYAHARA TETSUYA
• Format: Patent
• Language: English
• Published: 22.01.2009
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a pneumatic actuator for use in a vibration damping device of a new structure capable of easily reducing or avoiding noise generated on switching between a contact state and a separation state for a base housing of an elastic wall member without requiring a special part, and the fluid filled vibration damping device using it. SOLUTION: The pneumatic actuator 10 for use in the vibration damping device comprises: the base housing 12; an elastic wall member 14 being fixed fluid-tightly to the base housing 12 to form a working air chamber 48 therebetween; and an energizing means 50 positioned in the working air chamber 48 for exerting an energizing force on an output portion 36 provided on the elastic wall member 14, so as to drive the output portion 36 in opposition to the energizing force by externally changing in an air pressure in the working air chamber 48. At least one of opposing faces of the base housing 12 and the elastic wall member 14 has a plurality of projecting rod parts 58 which extend from an inner circumferential side towards an outer circumferential side. COPYRIGHT: (C)2009,JPO&INPIT