| 摘要 |
PURPOSE: To improve isolation from vibration by making a piston demarcating a pressure regulating chamber in the same size as a spring elastic annular body piston surface, forming an annular body between the piston and a reinforcement member by a first annular partition wall and forming a partition wall by a second annular partition wall in a working chamber and fixing the same liquid-tightly to a connecting rod. CONSTITUTION: A favorable cardan type flexibility is provided by a first annular partition film structure curved in the axial direction toward the outside provided in a section of a pressure regulating chamber 2 between a piston 9 and a reinforcement member 8, and a second annular partition film structure curved in the axial direction to extend into the working chamber 1, so that in the case of installing the engine mount with a gradient, the stable movement of the piston 9 is secured. Thus, high frequency vibration is well insulated, the piston 9 demarcating the pressure regulating chamber 2 has the piston surface at least as large as the piston surface of a spring elastic annular body 5, and as these piston surfaces are interlocked by a connecting rod 7, flow-through of some of a liquid into a buffer hole 4 can be promoted. Accordingly, sure damping for low-frequency vibration can be realized. |
