Patent ID: 11926173
Assignee: AKTIEBOLAGET SKF
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F  G | IPC B  F  G

Claim 0:
1. A sensorised wheel hub unit, comprising:
a rolling bearing bounded radially by an outer surface and provided radially on the inside with at least one annular race for rolling elements, the rolling bearing including an outer ring;
a plurality of zones of elastic deformation defined by a respective plurality of angularly spaced longitudinal recesses axially formed on the outer surface of the outer ring, wherein each recess extends over a circumferential length of the at least one annular race;
a first annular step formed peripherally within at least one of the angularly spaced longitudinal recesses;
at least one metal plate located transversely within the at least one of the angularly spaced longitudinal recesses, the at least one metal plate aligned in a circumferential direction to the at least one annular race, wherein circumferentially opposite extremities of the at least one metal plate to opposite lateral sides of the first step;
a hollow formed centrally within each recess and bounded perimeterally by the first annular step so as to form a second step inside the first annular step, the second step delimiting a base wall of the recess;
a sensor comprising a plate of piezoresistive ceramic material coupled to the at least one metal plate; and
an electrical circuit connected to opposite extremities of the ceramic plate facing the circumferential extremities of the at least one metal plate to collect an electrical signal (S1) relative to each sensor.