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US 7,078,832 B2Granted
Linear motor, and linear compressor using the same
AssigneeMatsushita Refrigeration Company
InventorsKo Inagaki, Ichiro Morita
Life of this patent
Estimating the term…
Abstract
A linear motor of the present invention has: a stator having a stationary iron core and a magnet wire; a mover having a moving iron core and a magnet; and a plate-shaped elastic member for supporting the mover in a manner to rock in the rocking directions. This construction eliminates a sliding portion for supporting the mover so that it can reduce the loss, which might otherwise accompany the reciprocation of the mover. Moreover, a linear compressor using this linear motor is high in efficiency and reliability.
Claims30
A linear motor comprising:
- a stator having a stationary iron core and a magnet wire retained on the stationary iron core;
- a mover positioned on the inner side of the stator and having a moving iron core and a magnet;
- a plate-shaped elastic member for supporting the mover in a manner to rock in rocking directions of the mover;
- a coil spring retained at its one end by the mover;
- and
- a spring holder fixed on the stator for retaining another end of the coil spring.
3 more elements
A linear motor comprising:
- a stator having a stationary iron core and a magnet wire retained on the stationary iron core;
- a mover positioned on the inner side of the stator and having a moving iron core and a magnet;
- and
- a plate-shaped elastic member for supporting the mover in a manner to rock in rocking directions of the mover, said elastic member being composed of a flexure bearing having a plurality of arms, said elastic member being connected to said mover.
1 more element
A linear motor comprising:
- a stator having a stationary iron core and a magnet wire retained on the stationary iron core;
- a mover positioned on the inner side of the stator and having a moving iron core and a magnet;
- a first plate-shaped elastic member for supporting the mover in a manner to rock in rocking directions of the mover;
- a second plate-shaped elastic member for supporting the mover at a side of the mover opposite the first plate-shaped elastic member in a manner to rock in rocking directions of the mover;
- wherein the first elastic member has a plurality of first arm portions extended while turning in the same direction from the position at which the first arm portions are mounted on the mover, to the position at which the first arm portions are mounted on the stator,
- wherein the second elastic member has a plurality of second arm portions extended while turning in the same direction from the position at which the second arm portions are mounted on the mover, to the position at which the second arm portions are mounted on the stator, and
- wherein the first arm portions and the second arm portions are extended while turning in the same direction.
4 more elements
Dependencies are inferred from the claim text.