초록 ▼

A linear motor includes tubular outer yoke (4), tubular inner yoke (3) disposed in outer yoke (4), coil (2) provided to inner yoke (3), permanent magnet (5a, 5b) vibrating following a magnetic flux produced by coil (2), and vibrator (6) made of magnetic material and supporting permanent magnets (5a,

A linear motor includes tubular outer yoke (4), tubular inner yoke (3) disposed in outer yoke (4), coil (2) provided to inner yoke (3), permanent magnet (5a, 5b) vibrating following a magnetic flux produced by coil (2), and vibrator (6) made of magnetic material and supporting permanent magnets (5a, 5b). Magnetic loop produced by outer yoke (4) and inner yoke (3) travels through vibrator (6) free from interference by vibrator (6) because vibrator (6) is made of magnetic material. As a result, the linear motor vibrates efficiently.

대표청구항 ▼

1. A linear motor comprising: (a) a tubular outer yoke; (b) a tubular inner yoke disposed in said outer yoke; (c) a coil provided to one of said outer yoke and said inner yoke; (d) a permanent magnet located between said outer yoke and said inner yoke and that vibrates in response to a magneti

1. A linear motor comprising: (a) a tubular outer yoke; (b) a tubular inner yoke disposed in said outer yoke; (c) a coil provided to one of said outer yoke and said inner yoke; (d) a permanent magnet located between said outer yoke and said inner yoke and that vibrates in response to a magnetic flux produced by said coil; and (e) a vibrator supporting said permanent magnet, wherein at least one of said outer yoke and said inner yoke is formed by arranging a plurality of multi-layered blocks in an annular shape, with a spacing between adjacent blocks thereof filled with a compression-formed body. 2. A compressor including a linear motor, said motor comprising: (a) a tubular outer yoke; (b) a tubular inner yoke disposed in said outer yoke; (c) a coil provided to one of said outer yoke and said inner yoke; (d) a permanent magnet located between said outer yoke and said inner yoke and that vibrates in response to a magnetic flux produced by said coil; and (e) a vibrator supporting said permanent magnet, wherein at least one of said outer yoke and said inner yoke is formed by arranging a plurality of multi-layered blocks in an annular shape, with a spacing between adjacent blocks thereof filled with a compression-formed body.