Brushless D.C. motor
AssigneeJohnson Electric S.A.
InventorsBenno Blase, Andreas Schlegel
Life of this patent
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Abstract
The brushless direct current motor comprises a housing 10, a stator 13 and a rotor 11 within the housing, windings on the stator, sensors for sensing the position of the rotor relative to the stator and electronic circuitry for switching the current in the windings in response to outputs from the sensors to cause the rotor to rotate relative to the stator. The sensors and at least a part of the electronic circuitry are encapsulated in an electrically insulating and fuel resistant material in a container within the housing.
Claims19
A brushless direct current motor comprising a housing, a stator, and a rotor within the housing, windings on the stator, sensors for sensing the position of the rotor relative to the stator and electronic circuitry for switching the current in the windings in response to outputs from the sensors to cause the rotor to rotate relative to the stator, the sensors and at least a part of the electronic circuitry being encapsulated in an electrically insulating and fuel resistant material in a container within the housing.
A brushless direct current motor comprising a wound stator and a permanent magnet rotor, the rotor having a laminated core and being overmoulded with material magnetized subsequent to molding.
Dependencies are inferred from the claim text.