US 7,405,501 B2Granted

Electric generator

AssigneeIndustrial Technology Research Institute

InventorsWen-Yang Peng, Fuh-Yu Chang, Ching-Hsiang Cheng

Life of this patent

Estimating the term…

Loading patent…

Abstract

An electric generator is disclosed, which comprises: at least a magnet, each having more than two poles; and at least a claw-pole set, each being composed of an inner claw-pole and an outer claw-pole; wherein, the inner claw-pole and the outer claw-pole are interlaced arranged and used for guiding magnetic flux; the inner claw-pole is connected to an iron core whose outer diameter is smaller than the magnet and thus the loop of the inner claw-pole and the outer claw-pole is conducted; the core is winded by a solenoid coil; the number of claws of the inner claw-pole is the half of the pole number of the magnet while the outer claw-pole is the same, so that, as the magnet is move relative to the claw-pole set, the magnetic flux passing through the solenoid coil will change continuously and thus an induction electromotive force is generated.

Claims23

Dependent claims

An electric generator, comprising:

at least a magnet, each having more than two poles;
at least a claw-pole set, each being composed of an inner claw-pole and an outer claw-pole;
an iron core, connected to each inner claw-pole for enabling loops of the inner claw-poles and the outer claw-poles to be conducted;
a solenoid coil, winding on the outside of the iron core;
and
at least a back panel, each back panel having:
an iron back, arranged at a side of the magnet opposite to that proximate to the claw-pole set, for enabling the closing of magnetic lines;
a fixation cap, axially arranged at the center of the iron back and the magnet while enabling an end of the fixation cap to abut against the iron core;
a bearing, ensheathing the fixation cap;
and
a bearing cap, wrapping the bearing,
wherein the bearing cap is screw-fixed to the iron back by screws, and thus the magnet, the iron back, the bearing, the bearing cap, and the fixation cap are assembled, and
wherein, the inner claw-pole and the outer claw-pole are interlaced arranged and used for guiding magnetic flux.

10 more elements

Dependencies are inferred from the claim text.