Patent ID: 7992848
Filing Date: 2011-08-09
Classification: F16F

Abstract:
1. An active vibration isolation support system comprising: an actuator for reciprocatingly vibrating a movable core on an axis by energizing a coil cylindrically wound around a bobbin which is arranged around an outer periphery of a fixed core; and a fluid chamber which is arranged on the axis of the actuator, whose volume is changed by a load applied from outside, and whose internal pressure is controlled by being connected to the movable core, wherein an end surface of the coil on the fluid chamber side is inclined so that a radially outer side of the end surface is close to the fluid chamber with respect to the axis; wherein step portions extending in a circumferential direction with respect to the axis are formed on an inner surface of the bobbin, each step portion having an arcuate cross section and contacting the inclined end surface of the coil; wherein the actuator comprises a yoke having a cylindrical portion positioned at an inner periphery of the bobbin and a flange portion positioned to oppose an end face of the coil on the fluid chamber side; and wherein the bobbin has an upper inner flange which extends obliquely upward toward the fluid chamber, the inner surface being formed on the upper inner flange.