| 摘要 |
<p>PURPOSE:To downsize a seismoscope and also improve reliability and response irrespective of inclination of an installed posture and a direction of vibration by converting vertical motion with pendulum vibration converted into an electric signal and also automatically maintaining a vibration sensor horizontal. CONSTITUTION:When specified or more vibration is applied, a pendulum 8 performs pendulous motion, and this is converted into vertical motion by a motion conversion mechanism C, which is further converted into an electric signal in a switch mechanism D. Therefore length of the pendulum 8 can be irrespective of setting of acting acceleration, so that it is not necessary to increase its length whereby a seismoscope can be entirely downsized in both horizontal and vertical directions. In addition even if a case A is slantly installed, an automatic horizontal mechanism F functions to automatically maintain a seismoscope part E horizontal and also its mechanism F is damped via a damper part G whereby a fluctuation in vibration values and operation deviation due to the damping can be reduced. The mechanism C is pivoted with its disc top part swingable by a bearing metal of an inner base 9, and vertical motion conversion is done on a magnetic movable disk 12 of a magnet 11 attraction.</p> |
