Actuator using magnetic force, and drive device and sensor using the same
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United States of America Patent
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Dec 25, 2012
Grant Date -
Nov 4, 2010
app pub date -
Dec 8, 2008
filing date -
Dec 28, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To provide an actuator that can flexibly and softly move like muscles, can maintain a stable operation over a long period of time, can generate a strong driving force, has a rapid input response, has a favorable sensitivity, has a high energy conversion efficiency, and can be accurately controlled, a coil is embedded in a magnetic elastomer obtained by mixing a powder-like ferromagnetic or highly magnetic permeable material with an elastomer, so that the coil can be electrically connected. By electrically connecting the coil, a magnetic field generates in the coil and around the coil. The magnetic field penetrates the magnetic elastomer. When the magnetic field generates in the magnetic elastomer, deformation force acts on the magnetic elastomer by the magnetic force acting on each portion in the magnetic elastomer. Thus, driving force can be obtained.
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