Abstract: A micromechanical rotational rate sensor includes a substrate, at least one base element suspended by at least one spring element on the substrate, an excitation device and a read-out arrangement. The base element includes at least one seismic or inertial mass. The spring element is movable perpendicularly to the motion direction of the base element so that apex or deflection points of the spring element will move perpendicularly to the excitation direction while the base element is thereby not excited to move perpendicularly to the excitation direction.

Abstract: The present invention relates to a micromechanical rotational rate sensor with a substrate (9), at least one base element (1) that is suspended by at least one spring element (11, 11?) on the substrate (9), which base element comprises at least one seismic or inertial mass (3), an excitation means (8) and with a read-out arrangement (15). According to the invention, the spring element (11, 11?) is movable perpendicularly to the motion direction (X, Y) of the base element (1).