Patent ID: 6895819

Claim:
An acceleration sensor for detecting acceleration, comprising: a base having a first surface delineated by a first plurality of edges; a transducer that is not permanently oscillating, is supported at the base and exhibits torsion vibration only when acceleration is caused; a weight portion that is connected to the not permanently oscillating transducer, and supported at a position different from the center of gravity of the transducer and the weight portion itself, the weight portion having a first surface delineated by a second plurality of edges, each edge of the first plurality of edges being adjacent to a respective edge of the second plurality of edges; and a detecting section which is formed on the transducer and detects the amount of characteristic corresponding to a torsion of the transducer caused by an angular moment centered on the supporting position of the weight portion upon application of acceleration in one direction to the transducer and the weight portion; wherein a face of the transducer is made flush with a face of the weight portion, and the base, the transducer and the weight portion are stacked in the height direction, and the transducer is a torsion vibrator having two sliding vibrators.