Actuator with coated stator and rotor modules
AssigneeMmt SA
InventorsGaël ANDRIEUX, Pascal THIBAUT, Gaëtan RIOU
Life of this patent
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Abstract
An electronic actuator is made up of a polyphase brushless motor comprising a rotor provided with permanent magnets and secured to an output shaft, and a stator supporting coils and providing the magnetic drive of the rotor, a first electrical connection assembly powering the coils, said stator being built into a stator module made up of a material which coats the wound stator as well as the first electrical connection assembly. The rotor is built into a rotor module made up of a flange coating a bearing that guides the shaft of the rotor. The stator module and the rotor module have elements for indexing and for attachment relative to one another.
Claims17
An electronic actuator comprising a polyphase brushless motor comprising a rotor provided with permanent magnets and secured to an output shaft, and a stator supporting coils and providing a magnetic drive of the rotor, a first electrical connection assembly powering the coils, the stator built into a stator module made up of a material which coats the wound stator as well as the first electrical connection assembly, the rotor being built into a rotor module comprising a flange coating a bearing that guides the shaft of the rotor, and in that the stator module and the rotor module including elements indexing and attaching relative to one another.
A method of manufacturing a magnetized rotor module comprising a flange enclosing a guide element guiding an axis of a rotor for an actuator, the method comprising:
- overmoulding of a front guide element to form the flange with its positioning and indexing pins;
- assembling a stack of laminations on the rotor axis;
- bonding of magnet(s) of a motor on the stack of laminations;
- and
- assembling a rear guide element on the axis comprising the stack of laminations.
Dependencies are inferred from the claim text.