LINEAR ELECTRIC MOTOR

摘要

A linear electric motor, to be applied to a hermetic compressor of refrigeration to produce reciprocation of a piston (40) within a cylinder (16). The coil (50) of the linear electric motor is mounted forms concentrically around the cylinder (16), and a support (54) for the magnets is mounted to an outwardly extending base flange (42) of the piston (40). The support (54) is formed by a base plate (62) that is mounted to the base flange (42) of the piston (40) and has a plurality of "L" shaped finger plates (66), which are spaced around and affixed to the base plate (62), with the edges of the long legs (68) of the finger plates (66) extending radially of the central axis of the piston (40). An arcuated shaped permanent magnet (58) is fitted between the opposite flat sides of each pair of the long legs of the finger plates (66) to form a toroidal shaped magnet assembly.