Direct-current motor and hub unit
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United States of America Patent
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Mar 18, 2014
Grant Date -
Feb 2, 2012
app pub date -
Jun 24, 2011
filing date -
Jul 29, 2010
priority date (Note) -
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Abstract
In a motor, a motor case includes a first case and a second case separable from each other in a direction of an axis of a rotation shaft of a rotor. The first case and the second case each have cut-away portions extending parallel to the axis from a separation edge (open side edge) thereof. The separation edges of the first and second cases each have abutment portions not formed with the cut-away portions, and the abutment portions of the first case respectively abut against the abutment portions of the second case. The cut-away portions cooperatively define a plurality of windows disposed in a periphery of the motor case. The stator has a plurality of bulges projecting radially outward from a peripheral surface thereof in association with the windows.
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