Patent ID: 9726492
Date: 2017-08-08
CPC Classifications: G01C

Claim:
1. An angular velocity detection element comprising: a vibrating body configured to detect an angular velocity based on a detection vibration generated by an action of a Coriolis force in the vibrating body that undergoes driven vibration along a planar surface, the vibrating body including: a central base fixed in a center of the planar surface; wherein the four detection beams each include a base end detection beam that is connected to the central base at an end portion of the base end detection beam on an inside in the radial direction; a central detection beam that is connected to the base end detection beam at an end portion of the central detection beam on the inside in the radial direction and is connected at an end portion of the central detection beam on the outside in the radial direction to one of the external connection beams on a first side of the central detection beam and is connected to another one of the external connection beams on a second side of the central detection beam; a first direction which is orthogonal to the radial direction and a second direction opposite to the 1st direction; a 1st-direction-side detection beam that is connected to the base end detection beam at an end portion of the 1st-direction-side detection beam on the inside in the radial direction and is connected to one of the internal connection beams at an end portion of the 1st-direction-side detection beam on the outside in the radial direction; and a 2nd-direction-side detection beam that is connected to the base end detection beam at an end portion of the 2nd-direction-side detection beam on the inside in the radial direction and is connected to another one of the internal connection beams at an end portion of the 2nd-direction-side detection beam on the outside in the radial direction; wherein the 1st-direction-side detection beam, the 2nd-direction-side detection beam, and the central detection beam are each parallel to one another.