Compact motoreducer
First Claim
1. A motoreducer formed by a casing comprising:
- (a) a brushless motor having at least two electrical phases, a rotor rotating on a rotor axle bearing an input pinion that rotates on the rotor axle, and a stator assembly having at least two poles each bearing coils, winding axes of which are spaced apart by a mechanical angle smaller than 180° and
extend radially;
(b) a gear train comprising;
at least four reduction stages;
at least three gear axles;
a first of the gear axles placed in the angle space formed between the two poles, with the first axle bearing a first assembly formed by a coupled pinion and a toothed wheel, with the toothed wheel being placed above the pinion and having a radius larger than the pinion;
the toothed wheel meshing with the input pinion, the toothed wheel being placed above the poles bearing the coils;
all of the axles of the gear train being parallel to one another and parallel to the axle of the rotor;
at least one of the gear axles bearing two toothed wheel/pinion assemblies; and
(c) the gear train being positioned transversely relative to the input pinion and being positioned on one side of the input pinion.
1 Assignment
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Accused Products
Abstract
The disclosure relates to a motoreducer consisting of a casing including a brushless motor having at least two electrical phases, a rotor rotating on an axle, and composed of a stator assembly having at least two poles each bearing coils the winding axes of which are spaced apart by a mechanical angle smaller than 180° and extend radially, and a gear train. The gear train includes: a first axle placed in the angular space formed between the two poles, the first axle bearing a first assembly formed by a coupled pinion and toothed wheel, the toothed wheel being placed above the pinion and having a radius larger than the pinion, the toothed wheel meshing with an input pinion rotating on the axle of the rotor, the toothed wheel being placed above the poles bearing the coils, all the axles of the gear train being parallel to one another and parallel to the axle of the rotor. The gear train has at least one axle bearing two toothed wheels/pinion assemblies rotating on the axle.
30 Citations
20 Claims
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1. A motoreducer formed by a casing comprising:
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(a) a brushless motor having at least two electrical phases, a rotor rotating on a rotor axle bearing an input pinion that rotates on the rotor axle, and a stator assembly having at least two poles each bearing coils, winding axes of which are spaced apart by a mechanical angle smaller than 180° and
extend radially;(b) a gear train comprising; at least four reduction stages; at least three gear axles; a first of the gear axles placed in the angle space formed between the two poles, with the first axle bearing a first assembly formed by a coupled pinion and a toothed wheel, with the toothed wheel being placed above the pinion and having a radius larger than the pinion; the toothed wheel meshing with the input pinion, the toothed wheel being placed above the poles bearing the coils; all of the axles of the gear train being parallel to one another and parallel to the axle of the rotor; at least one of the gear axles bearing two toothed wheel/pinion assemblies; and (c) the gear train being positioned transversely relative to the input pinion and being positioned on one side of the input pinion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A motoreducer comprising:
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(a) a casing; (b) a brushless motor having at least two electrical phases, a rotor rotating on a rotor axle, and a stator assembly having at least two poles each bearing coils, winding axes of which are spaced apart by a mechanical angle smaller than 180° and
extend radially; and(c) a gear train comprising; multiple gear axles; a first of the gear axles placed in the angle space formed between the two poles, with the first axle bearing a first assembly formed by a coupled pinion and a toothed wheel, with the toothed wheel being placed above the pinion and having a radius larger than the pinion; the toothed wheel meshing with an input pinion rotating on the axle of the rotor, the toothed wheel being placed above the poles bearing the coils; all of the axles of the gear train being parallel to one another and parallel to the axle of the rotor; and at least one of the gear axles rotatably bearing two toothed wheel/pinion assemblies; (d) wherein the electric motor is accommodated inside an internally toothed gear. - View Dependent Claims (19)
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20. A motoreducer comprising:
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(a) a casing; (b) a brushless motor located within the casing and including at least two electrical phases and comprising a rotor including an axle rotating about a rotor axis and a stator including multiple poles bearing electrical coils, winding axes of which are spaced apart by a mechanical angle smaller than 180° and
extend radially, the rotor axle bearing an input pinion adapted to rotate on the rotor axis;(c) a gear train, located inside the casing, comprising; a first axle located between an adjacent pair of the poles, a first pinion and toothed wheel assembly being rotatable about the first axle, and the toothed wheel having a radius larger than the pinion which are coaxial with each other, and the first axle being closer to the rotor axis than are distal radial ends of the coil bearing poles; the toothed wheel meshing with the input pinion; a second axle offset from the first axle and the rotor axis, at least a second pinion and toothed wheel assembly rotatable on the second axle and including multiple coaxial and spaced apart toothed wheels; a third axle offset from the first axle, the second axle, and the rotor axis; the gear train having at least four reduction stages; all of the axles of the gear train being parallel to one another and parallel to the rotor axis; and a toothed wheel of the first assembly overlapping with the coil bearing pair of the poles in a true view.
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Specification