Vibration isolator

Abstract

Abstract PURPOSE:To eliminate an unstable element of an attenuation characteristic of vibration, by providing a winding which is fixed to a body and is interlinked with a magnetic field in an air-gap, and a spring for holding a base seat to the body, and terminating both ends of the winding by an electric circuit network. CONSTITUTION:A winding 8 is fixed to a body 1 by use of a bobbin 6. A magnet 10 and two yokes 9, 11 for forming a magnetic path are fixed to a base seat 13. The winding 8 moves in the air-gap of this magnetic path, and the base seat is held to the body by a spring 7. Both ends of the winding 8 are terminated by an electric circuit network 12. In this state, when constants decided by intensity of a magnet, the number of turns of the winding, etc., the impedance of the circuit network and the winding, respectively, a constant of the spring, and mass of the body are denoted by k1, k2, and Z1, Z2, and k3, and (m), respectively, a kinematic equation of the body in case when the base seat 13 is fixed is given by the equation. The equation indicates that a wide attenuation characteristic is obtained by setting Z2. Accordingly, an unstable element of the attenuation characteristic can be eliminated.

Inventors

• 👤 Tetsuo Maeda
• 👤 哲男 前田
• 👤 Koichi Azuma
• 👤 孝一 東

Bibliographic Details