Magnet-Bearing Moving Part for Permanent Magnet Synchronous Machine

摘要

The moving part, designed to move past a fixed rotor with coils, comprises a metallic chassis to which magnets, arranged in parallel rows of alternating polarity, are bonded. Non-metallic fixing strips, screwed to the chassis, are positioned longitudinally between each row of magnets, extend along the entire length of these rows and mechanically immobilize the magnets. Each fixing strip comprises a bearing base with convex rounded flanks which immobilize the magnets vertically and collaborates with a concave rounded portion, formed in the adjacent edge face of the magnets over at least half of the height thereof. The strip also comprises a longitudinal upper extension acting as a spacer between the rows of magnets and immobilizing the magnets laterally. The invention is of benefit to the manufacturers of rotary or linear electrotechnical machines such as motors or generators.

主权项

1. A magnet-bearing moving part for a permanent magnet synchronous machine provided for movement in front of a fixed stator comprising a set of induction coils, the moving part comprising a metallic frame and a series of permanent magnets integrated into the frame, the magnets being arranged in parallel rows and perpendicular to the movement of the moving part, the magnets being of the same polarity within each row, the moving part also comprising at least one non-magnetic securing strip longitudinally placed between two successive rows of the series of permanent magnets and mechanically secured to the frame,
wherein each of the at least one securing strips:
extends substantially over an entire length of the two successive rows and contributes to clocking all magnets of the two successive rows,comprises a support base with convex rounded lateral sides, the convex rounded lateral sides providing vertical blocking of magnets of the two successive rows, and a longitudinal upper extension that acts as a spacer between the two successive rows and providing lateral blocking of magnets of the two successive rows, and wherein each magnet of the two successive rows comprises a concave rounded portion having a height equal to at least half of a magnet height and a shape complementary to one of the convex rounded lateral sides of the support base.