A micromechanical structure for an acceleration sensor, including a seismic mass that is constituted definedly asymmetrically with reference to the rotational Z axis of the structure of the acceleration sensor, spring elements that are fastened on the seismic mass and on at least one fastening element, a rotational motion of the seismic mass being generatable by way of the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted substantially orthogonally to the rotational Z axis.