Micromechanical structure for an acceleration sensor
First Claim
Patent Images
1. A micromechanical structure for an acceleration sensor, comprising:
- a seismic mass that is constituted definedly asymmetrically with reference to the rotational Z axis of the structure of the acceleration sensor; and
spring elements that are fastened on the seismic mass and on at least one fastening element;
wherein a rotational motion of the seismic mass is generatable by the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted substantially orthogonally to the rotational Z axis;
wherein the asymmetry of the seismic mass is brought about by a first additional mass;
wherein a second additional mass is provided in addition to the seismic mass.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
-
Citations
15 Claims
-
1. A micromechanical structure for an acceleration sensor, comprising:
-
a seismic mass that is constituted definedly asymmetrically with reference to the rotational Z axis of the structure of the acceleration sensor; and spring elements that are fastened on the seismic mass and on at least one fastening element; wherein a rotational motion of the seismic mass is generatable by the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted substantially orthogonally to the rotational Z axis; wherein the asymmetry of the seismic mass is brought about by a first additional mass; wherein a second additional mass is provided in addition to the seismic mass. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A micromechanical structure for an acceleration sensor, comprising:
-
a seismic mass that is constituted definedly asymmetrically with reference to the rotational Z axis of the structure of the acceleration sensor; and spring elements that are fastened on the seismic mass and on at least one fastening element; wherein a rotational motion of the seismic mass about the rotational Z axis is generatable by the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted substantially orthogonally to the rotational Z axis; wherein the rotational Z axis is orthogonal to a main extension plane of the seismic mass; and wherein; the at least one fastening element includes a fastening element situated in a central area of the seismic mass; and the spring elements include four spring elements disposed with respect to one another approximately at an angle of 90 degrees, each of the four spring elements connecting the seismic mass to the fastening element situated in the central area of the seismic mass. - View Dependent Claims (11)
-
-
12. An acceleration sensor, comprising:
-
a micromechanical structure, including; a seismic mass that is constituted definedly asymmetrically with reference to the rotational Z axis of the structure of the acceleration sensor; and spring elements that are fastened on the seismic mass and on at least one fastening element; and fixed electrodes which detect a rotation of the seismic mass; wherein a rotational motion of the seismic mass about the rotational Z axis is generatable by the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted substantially orthogonally to the rotational Z axis; wherein the rotational Z axis is orthogonal to a main extension plane of the seismic mass; and wherein; the at least one fastening element includes a fastening element situated in a central area of the seismic mass; and the spring elements include four spring elements disposed with respect to one another approximately at an angle of 90 degrees, each of the four spring elements connecting the seismic mass to the fastening element situated in the central area of the seismic mass. - View Dependent Claims (13)
-
-
14. A method for manufacturing a micromechanical structure for an acceleration sensor, the method comprising:
-
providing a seismic mass having a defined asymmetry with respect to a rotational Z axis of the structure; and providing spring elements so that the spring elements are fastened on the seismic mass and on at least one fastening element, so that a rotational motion of the seismic mass about the rotational Z axis is generatable by the spring elements substantially only upon an acceleration in a defined sensing direction within a plane constituted orthogonally to the rotational Z axis;
wherein the rotational Z axis is orthogonal to a main extension plane of the seismic mass;wherein; the at least one fastening element includes a fastening element situated in a central area of the seismic mass; and the spring elements include four spring elements disposed with respect to one another approximately at an angle of 90 degrees, each of the four spring elements connecting the seismic mass to the fastening element situated in the central area of the seismic mass. - View Dependent Claims (15)
-
Specification