Back to results
US 2006/0220475 A1Published application
Stepping motor and fan having the same
AssigneeNidec Copal Corporation
InventorsTatsuki Goto, Takashi Kasahara
Life of this patent
Estimating the term…
Abstract
A stepping motor includes: a stator including a coil that is wound so as to form a hollow space; a rotor including a magnet to be disposed in the hollow space of the coil, the rotor being rotationally driven by changing magnetic poles of the stator; and a magnetic member that is disposed adjacent to the coil so that a direction of a polarity of the magnet and a direction of a winding axis of the coil in a stable position of the magnet cross each other when the coil is excited or when not excited.
Claims9
A stepping motor comprising:
- a stator including a coil that is wound so as to form a hollow space;
- a rotor including a magnet to be disposed in the hollow space of the coil, wherein the rotor is rotationally driven by changing magnetic poles of the stator;
- and
- a magnetic member that is disposed adjacent to the coil so that a direction of a polarity of the magnet and a direction of a winding axis of the coil in a stable position of the magnet cross each other when the coil is excited or when not excited.
1 more element
Dependencies are inferred from the claim text.