Patent ID: 8250916

Claim:
An inertial sensor comprising: a basement layer having a main surface; a first drive frame connected to the basement layer via a first elastic body having higher rigidity in a second direction than in a first direction, the first direction being parallel to the main surface and the second direction crossing the first direction; a first Coriolis frame connected to the first drive frame via a second elastic body having lower rigidity in the second direction than in the first direction; a first driving unit which vibrates the first drive frame in the first direction; a second drive frame connected to the basement layer via a third elastic body having higher rigidity in the second direction than in the first direction; a second Coriolis frame connected to the second drive frame via a fourth elastic body having lower rigidity in the second direction than in the first direction; a second driving unit which vibrates the second drive frame in the first direction; and a driving-direction acceleration detecting unit connected to the first drive frame via a fifth elastic body and connected to the second drive frame via a sixth elastic body, wherein the first driving unit and the second driving unit vibrate the first drive frame and the second drive frame in opposite phases in the first direction.