Patent ID: 6118200
Filing Date: 2000-09-12
Classification: D01H,F16C

Abstract:
A magnetic bearing for contactless support of a rotor (1) in relation to a stator (8), comprising:a rotor (1) and a stator (8);at least one bearing gap (4) between said rotor and stator, in which respective magnetic zones of said rotor and stator (3, 5) are disposed with respective magnetic surfaces facing each other a short distance apart;wherein the stator magnetic zone is fixed to the stator in such a way that it can vibrate freely in substantially one plane, which is aligned parallel to the magnetic surfaces of said rotor and stator magnetic zones (3, 5) facing each other in the bearing gap (4); anda mechanical friction device (6, 10, 11) disposed between said stator (8) and said stator magnetic zone (5) to damp the vibrational movement of the stator magnetic zone;wherein the mechanical friction device is provided with two contact faces (10, 11) frictionally connected with each other, with normals to said contact faces being oriented perpendicular to the plane of vibration of the stator magnetic zone (5), one of the contact faces being provided with a smooth surface (11) and the other with a rough surface (10), the rough surface being firmly connected with the stator magnetic zone (5), and the smooth surface being formed by a spring (11), which is fixed in position on the stator (8) but having a resilient part which moves compliantly resiliently in substantially the direction of the normals to the contact faces.