Patent ID: 6873067

Claim:
A linear oscillator comprising: a moving part reciprocating; a case containing incorporating said moving part; and an amplitude control spindle supported in said case to be movable, wherein said moving part and said amplitude control spindle reciprocate at a resonance frequency of said linear oscillator or a frequency in a vicinity thereof; an electromagnetic driving part housed in said case, for reciprocating said moving part; and a spring member disposed at least between said case and said moving part, and between said case and said amplitude control spindle, for forming a spring oscillation system, wherein a resonance frequency of said spring oscillation system is equal to a resonance frequency of said linear oscillator or a frequency in a vicinity thereof, wherein said spring member includes: a first spring disposed between a fixed part comprised of said case and said electromagnetic driving part and said moving part; a second spring disposed between said moving part and said amplitude control spindle; and a third spring disposed between said amplitude control spindle and said fixed part.