Angular velocity sensor device

Abstract

In an angular velocity sensor device, a vibration isolation member, a sensor support plate on which a tuning fork unit functioning as a vibrating type angular velocity sensor is mounted, a collar, a circuit board on which a circuit pattern is formed for driving the tuning fork unit and processing a signal output therefrom are provided by having a plurality of pins inserted, in this order, which extend from the bottom surface of a concave-shaped case. The circuit pattern and the tuning fork unit are connected with each other via a flexible printed circuit board. These components are accommodated inside the concave-shaped case. A cover is fitted in an open top of the case so as to completely seal the case. The angular velocity sensor device with the aforementioned arrangement does not suffer variation in the operational properties due to disturbance vibration and deterioration in the vibration isolation property. In addition, adverse effects of moisture and corrosive gas in the atmosphere on the operational properties are prevented, since air is prevented from entering the inside of the case.