Patent ID: 6085600
Filing Date: 2000-07-11
Classification: G01L

Abstract:
Torque-measuring device inserted between two coaxial drive shaft portions (4, 5) connecting a driving member (1) and a driven member (2), of the type including two discs (6, 7) arranged facing one another in planes which are more or less perpendicular to the axis of the shaft portions and bearing at their periphery position-encoding means (8), each connected to one shaft portion and to one another by a block (9) of elastically deformable material, an axial spacer comprising a ball-shaped member arranged between the discs (6, 7) in the block of elastically deformable material, and position-detecting means (11) arranged facing the position-encoding means of the discs, the output of which is connected to torque-determining means (12), wherein the position-encoding means are formed of alternating axially projecting parts (6a, 6b, 6c, 6d, 7a, 7b, 7c, 7d) of the discs, extending facing the block (9) of elastically deformable material, in that the position-detecting means (11) comprise a position sensor arranged facing the alternating projecting parts and in that the torque-determining means comprise means (12) of analyzing the duty cycle of the output signals of the sensor.