Detection device for bearings

Abstract

A bearing detection device comprises: a housing body (2) having a substantially annular shape, prearranged for being fixed to a stationary ring (6a) of a bearing (6); and a detection arrangement on the housing body (2), comprising at least one piezoelectric transducer (10; 20). The detection arrangement further comprises: a floating body (7) having a substantially annular shape, which is mounted within the housing body (2) and is able to amplify mechanically vibrations of the bearing (6); a sensor unit (8) having a substantially annular shape, which is set in a substantially stationary position on the housing body (2), the supporting body (81) having a detection surface (8a) that is configured for receiving thereon, directly or via interposition of at least one further element, a corresponding surface of the floating body (7). The at least one piezoelectric transducer (10; 20) defines at least part of the detection surface (8a) and is configured for generating an electrical potential difference that is substantially proportional to the magnitude of a stress or force exerted by the floating body on the at least one piezoelectric transducer (10; 20).

Dependencies are inferred from the claim text.