Outer rotor type motor / generator
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorKazuma Okuda
Life of this patent
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Abstract
A motor/generator housed in an annular space formed between an engine side wall and a crank pulley fixed to an end of a crank shaft includes a stator supported on the engine side wall and a rotor supported on the inner surface of a peripheral wall of the pulley. Air is introduced into the annular space via an air inlet passage by means of cooling fan blades formed on a side wall of the crank pulley, and coils are cooled by passing the air through air passages formed between adjacent coils. The entrance of an air gap between the stator and the rotor is shielded by means of shields provided on bobbins so as to prevent any foreign matter from entering the air gap.
Claims4
An outer rotor type motor/generator housed in an annular space defined between an engine side wall and a crank pulley fixed to an end of a crankshaft, said motor/generator comprising:
- a stator supported on the engine side wall;
- and
- a rotor supported on an inner face of a peripheral wall of the crank pulley so as to face an outer periphery of the stator across an air gap,
- wherein an air inlet passage is formed between the engine side wall and the edge of the peripheral wall of the crank pulley so as to provide communication between the annular space and the outside of the crank pulley,
- wherein cooling fan blades are provided on a side wall of the crank pulley and extend radially outwards from one end of the crankshaft to the peripheral wall of the crank pulley, and
- wherein coils of the stator are cooled by air introduced into the annular space via the air inlet passage and the air is discharged to the outside by means of the cooling fan blades.
Dependencies are inferred from the claim text.