Mount apparatus

摘要

A mount apparatus (20) for supporting a vibration source on a base is provided. The mount apparatus (20) includes a moving member (134) that is partially disposed in a pumping chamber (64) for moving within the pumping chamber (64) along a first axis (A) to create a volume change in the pumping chamber (64) to maintain the volume of the pumping chamber (64) to prevent a pressure increase in the pumping chamber (64) during the deformation of a flexible body (46) in response to an external excitation to effectively cancel the external excitation. The moving member (134) includes a moveable wall (144) of a flexible material, having a generally hour glass-shape in steady state, and extending between moving member upper and lower ends (140, 142). The moveable wall (144) flexes radially outwardly and inwardly relative to the first axis (A) in response to relative axial movement between the moving member upper and lower ends (140, 142), to amplify the volume change in the pumping chamber (64).

主权项

1. A mount apparatus for supporting a vibration source on a base comprising:
a housing extending about and along a first axis and defining a housing chamber; a flexible body made of an elastic material at least partially disposed in said housing chamber to define a pumping chamber configured to be filled with a fluid, said flexible body being interconnected with said housing for deforming elastically in response to movement of the vibration source relative to the housing caused by an external excitation; a moving member at least partially disposed in said pumping chamber for moving within said pumping chamber; and an actuator operatively coupled to said moving member for moving said moving member to create a volume change in said pumping chamber to maintain the volume of said pumping chamber to prevent a pressure increase in said pumping chamber during said deformation of said flexible body in response to the external excitation to effectively cancel the external excitation, wherein said moving member includes an axially extending moveable wall of a flexible material defining a moving member chamber for flexing radially outwardly and inwardly relative to said first axis to amplify the volume change in said pumping chamber, and wherein said actuator is a piezostack actuator.