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1. WO1998035167 - INEXPENSIVE ROTARY MAGNETIC BEARING WITH ACTIVE CENTRING ALONG THE ROTATION AXIS

Publication Number WO/1998/035167
Publication Date 13.08.1998
International Application No. PCT/FR1998/000225
International Filing Date 06.02.1998
Chapter 2 Demand Filed 03.09.1998
IPC
F16C 39/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
39Relieving load on bearings
06using magnetic means
CPC
F16C 32/0465
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
0406Magnetic bearings
044Active magnetic bearings
0459Details of the magnetic circuit
0461of stationary parts of the magnetic circuit
0465with permanent magnets provided in the magnetic circuit of the electromagnets
F16C 32/0476
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
0406Magnetic bearings
044Active magnetic bearings
0474for rotary movement
0476with active support of one degree of freedom, e.g. axial magnetic bearings
Applicants
  • AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE [FR]/[FR] (AllExceptUS)
  • LAMBERT, Charles [FR]/[FR] (UsOnly)
  • BERNUS, Christophe [FR]/[FR] (UsOnly)
Inventors
  • LAMBERT, Charles
  • BERNUS, Christophe
Agents
  • RINUY, Santarelli
Priority Data
97/0149310.02.1997FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) INEXPENSIVE ROTARY MAGNETIC BEARING WITH ACTIVE CENTRING ALONG THE ROTATION AXIS
(FR) PALIER MAGNETIQUE ROTATIF A CENTRAGE ACTIF LE LONG DE L'AXE DE ROTATION ET A FAIBLE COUT
Abstract
(EN)
The invention concerns a 1-active-axis rotary magnetic bearing comprising: a first portion including, around a rotation axis, two ring-shaped radially internal (23) and radially external (24) polar parts and a ring-shaped magnet with permanent magnetisation (25) set between a first linking polar portion integrated with the radially external polar part and a second linking polar portion integrated with the radially internal polar part; a second portion comprising two closing ring-shaped polar parts (26, 27) axially arranged on either side of the first portion, and comprising ring-shaped sections (26A, 27A) axially arranged opposite the ring-shaped polar parts through ring-shaped air gaps. The ring-shaped magnet (25) has axial magnetisation, and the first and second linking polar portions (23A, 24A) between which the permanent magnet is placed are arranged transversal to the axis.
(FR)
Un palier magnétique rotatif à 1-axe actif comporte: une première portion comportant, autour d'un axe de rotation, deux pièces polaires annulaires radialement externe (23) et interne (24) et un aimant annulaire à aimantation permanente (25) interposé entre une première portion polaire de liaison solidaire de la pièce polaire annulaire radialement externe et une seconde portion polaire de liaison solidaire de la pièce polaire annulaire radialement interne; une seconde portion comportant deux pièces polaires annulaires de fermeture (26, 27) disposées axialement de part et d'autre de la première portion, et comportant des tranches annulaires (26A, 27A) disposées axialement en regard des pièces polaires annulaires au travers d'entrefers annulaires. L'aimant annulaire (25) est à aimantation axiale, et les première et seconde portions polaires de liaison (23A, 24A) entre lesquelles l'aimant permanent est interposé sont disposées transversalement à l'axe.
Also published as
US09367103
Latest bibliographic data on file with the International Bureau