SHAFT TORQUE TRANSDUCER Russian patent published in 2005 - IPC

FIELD: contactless measurements of steering shaft torque in control system of rudder electromechanical booster.

SUBSTANCE: proposed torque transducer has torsion shaft, case accommodating wound former of inductance coils, and shields with ports perforated therein. First and second parts of shaft are coupled through torsion shaft and shields are installed at butt-ends of shaft parts facing each other. First shield is attached by means of bushing and second one is fixed in position. Former carrying inductance coils is installed in case with aid of radial projections disposed in guide slots of case and abuts against first shield spring-loaded relative to case. First part of shaft under inspection has slots formed on its side surface at butt-end facing end projections of shaft second part in specified space relation permitting relative turn of parts of this shaft up to stop of slots at projections. Each slot is provided with longitudinal groove. Bushing of first shield is mounted in slots for displacement over them and has radial projections disposed in longitudinal grooves of slots. Each bushing projection is spring-loaded to slot groove wall in one direction by mounting flat bent spring in seat to act upon opposite wall of slot groove.

EFFECT: enhanced stability of transducer output characteristic.

10 cl, 5 dwg