Patent ID: 9063167
Filing Date: 2015-06-23
Classification: G01P

Abstract:
1. An acceleration sensor comprising: a piezoresistive transducer including a framework with a support element on which a bending element is mounted and which experiences a deformation relative to the support element upon the application of a force, the framework having a neutral axis, extending along a longitudinal portion of the framework which is constant in length under the deformation, at least one expansion body comprising a piezoresistive material mounted on the framework which converts the deformation of the bending element into an electrically detectable resistance change, the support element and the bending element, at least in some areas thereof, defines a gap, at least one expansion body connects the support element and the bending element in the gap and the at least one expansion body extends longitudinally and intersects the neutral axis to subtend an angle within a range of 35° to 145°; the support element, the bending element and the at least one expansion body are monolithically connected; the bending element includes a plate bounded by side edges, one side edge being joined to the support element and at least one free side edge being free at an end thereof at or in a region of the at least one free side edge, the at least one expansion body is located between the support element and the bending element and the support element, the bending element and the at least one expansion body has a volume ranging from 1 to 10 mm