Brushless motor
AssigneeDyson Technology Limited
InventorsHarry Alexander Morley, Thomas Richard Stafford, Japhet Lee Cordova Morabe, Christopher David Townend
Life of this patent
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Abstract
A brushless motor has a stator assembly, and a frame within which the stator assembly is housed. The stator assembly has a plurality of stator core sub-assemblies, each having a stator core, a bobbin attached to the stator core, and a winding wound about the bobbin. Each bobbin has a connection portion for connecting to an adjacent bobbin in the stator assembly, and the frame is overmoulded to the stator assembly.
Claims22
A brushless motor comprising a stator assembly, and a frame within which the stator assembly is housed, wherein the stator assembly comprises a plurality of stator core sub-assemblies each comprising a C-shaped stator core, a bobbin attached to the stator core, and a winding wound about the bobbin, each bobbin comprising a connection portion for connecting to an adjacent bobbin in the stator assembly, and the frame being overmoulded to the stator assembly.
A method of manufacturing a brushless motor, the method comprising:
- obtaining a plurality of stator core sub-assemblies, each comprising a C-shaped stator core, a bobbin attached to the stator core, and a winding wound about the bobbin, each bobbin comprising a connection portion for connecting to an adjacent bobbin in the stator assembly;
- connecting adjacent stator core sub-assemblies, via the connection portions of the bobbin, to form a stator assembly;
- overmoulding the stator assembly to define a frame within which the stator assembly is housed.
Dependencies are inferred from the claim text.