Linear generator
First Claim
1. A linear generator comprising a first part which has a yoke fixed to a shaft and a plurality of permanent magnets substantially positioned along the longitudinal direction of said shaft and fixed to the surface of said yoke and in which said permanent magnets are magnetized in the direction perpendicular to the longitudinal direction of said shaft and each of adjacent permanent magnets has a polarity opposite to each other;
- and a second part which has a plurality of magnetic poles facing oppositely to said permanent magnets with clearance between said poles and said permanent magnets and said poles are spaced from each other by a specified distance therebetween, coils wound around bobbins made of non-magnetic material and a housing enclosing said coils, wherein said plurality of magnetic poles are provided between said permanent magnet and said coils.
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Accused Products
Abstract
A linear generator according to the present invention is adapted to generate a voltage proportional to the speed of a movable member or rotor and enable the movable member to be smoothly moved. The linear generator includes a first part having permanent magnets fixed to a yoke which are magnetized to the direction perpendicular to the longitudinal direction of a shaft, and a second part having a coil wound around the bobbins and a housing enclosing the coil. A plurality of magnetic poles are provided between the magnets and coils.
99 Citations
11 Claims
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1. A linear generator comprising a first part which has a yoke fixed to a shaft and a plurality of permanent magnets substantially positioned along the longitudinal direction of said shaft and fixed to the surface of said yoke and in which said permanent magnets are magnetized in the direction perpendicular to the longitudinal direction of said shaft and each of adjacent permanent magnets has a polarity opposite to each other;
- and a second part which has a plurality of magnetic poles facing oppositely to said permanent magnets with clearance between said poles and said permanent magnets and said poles are spaced from each other by a specified distance therebetween, coils wound around bobbins made of non-magnetic material and a housing enclosing said coils, wherein said plurality of magnetic poles are provided between said permanent magnet and said coils.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A linear generator comprising a first part which has a yoke fixed to a shaft and a plurality of permanent magnets fixed to the outer surface of said yoke and in which said permanent magnets are magnetized in the direction perpendicular to the longitudinal direction of said shaft and each of adjacent permanent magnets has a polarity opposite to each other;
- and a second part which has a plurality of magnetic poles facing oppositely to said permanent magnets with clearance between said poles and said permanent magnets and said poles are spaced from each other by a specified distance therebetween, coils located outside of said magnetic poles and wound around the bobbins made of non-magnetic material and a housing enclosing said coils, wherein at least one of said first and second parts has a means for minimizing the change of opposed area of said magnetic poles and said permanent magnets.
Specification