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US 9,312,743 B2Granted
Motor for washing machine, method for manufacturing same, and washing machine having same
AssigneeAmotech Co., Ltd.
InventorsByung Soo Kim, Se Ki Lee
Life of this patent
Estimating the term…
Abstract
Provided is a motor for a washing machine including: an inner rotor connected to a dehydrating tub rotating shaft and rotated together; an outer rotor connected to a pulsator rotating shaft and rotated together; and a double stator having a first coil arranged to leave a gap between the inner rotor and the outer rotor and which interacts with the outer rotor, to thereby form a first magnetic circuit and a second coil which interacts with the inner rotor to thereby form a second magnetic circuit, in which a first drive signal is applied to the first coil and a second drive signal different from the first drive signal is applied to the second coil.
Claims20
A motor for a washing machine, the motor comprising:
- an inner rotor connected to a dehydrating tub rotating shaft;
- an outer rotor connected to a pulsator rotating shaft;
- and
- a double stator arranged to leave a gap between the inner rotor and the outer rotor, the double stator having a first coil which interacts with the outer rotor, to thereby form a first magnetic circuit and a second coil which interacts with the inner rotor, to thereby form a second magnetic circuit,
- wherein a first drive signal is applied to the first coil and a second drive signal different from the first drive signal is applied to the second coil,
- wherein the double stator comprises a plurality of split core assemblies,
- wherein one of the split core assemblies comprises:
- a split core on one side of which an outer teeth are formed and on the other opposite side of which an inner teeth are formed;
- a bobbin that surrounds an outer surface of the split core and is an insulator, a partition between the outer teeth and the inner teeth, and a connecting unit that is formed at both ends of the partition and connects between the split cores adjacent to each other,
- wherein the first coil to which the first drive signal is applied is wound on the outer teeth and the second coil to which the second drive signal different from the first drive signal is applied is wound on the inner teeth, and
- wherein the connecting unit comprises:
- a coupling protrusion that is formed on one side of the partition;
- and a coupling recess that is formed on the other side of the partition and that is fitted with the coupling protrusion.
10 more elements
A motor for a washing machine, the motor comprising:
- an inner rotor connected to a dehydrating tub rotating shaft;
- an outer rotor connected to a pulsator rotating shaft;
- and
- a double stator arranged to leave a gap between the inner rotor and the outer rotor, the double stator having a first coil which interacts with the outer rotor, to thereby form a first magnetic circuit and a second coil which interacts with the inner rotor, to thereby form a second magnetic circuit,
- wherein a first drive signal is applied to the first coil and a second drive signal different from the first drive signal is applied to the second coil,
- wherein the double stator comprises a plurality of split core assemblies,
- wherein the split core assemblies comprises:
- a split core on one side of which an outer teeth are formed and on the other opposite side of which an inner teeth are formed;
- a bobbin that surrounds an outer surface of the split core and is an insulator, a partition between the outer teeth and the inner teeth, and a connecting unit that is formed at both ends of the partition and connects between the split cores adjacent to each other,
- wherein the first coil to which the first drive signal is applied is wound on the outer teeth and the second coil to which the second drive signal different from the first drive signal is applied is wound on the inner teeth, and
- wherein the connecting unit comprises:
- pin recesses that are formed at both ends of the partition and a pin member that is fitted between the pin recesses of two split cores that are disposed adjacent to each other.
9 more elements
A motor for a washing machine, the motor comprising:
- an inner rotor connected to a dehydrating tub rotating shaft;
- an outer rotor connected to a pulsator rotating shaft;
- and
- a double stator arranged to leave a gap between the inner rotor and the outer rotor, the double stator having a first coil which interacts with the outer rotor, to thereby form a first magnetic circuit and a second coil which interacts with the inner rotor, to thereby form a second magnetic circuit,
- wherein a first drive signal is applied to the first coil and a second drive signal different from the first drive signal is applied to the second coil,
- wherein the double stator comprises a plurality of split core assemblies,
- wherein the split core assemblies comprises:
- a split core on one side of which an outer teeth are formed and on the other side of which an inner teeth are formed;
- a bobbin that surrounds an outer surface of the split core and is an insulator,
- wherein the first coil to which the first drive signal is applied is wound on the outer teeth and the second coil to which the second drive signal different from the first drive signal is applied is wound on the inner teeth,
- wherein the double stator further comprises:
- a lower fixing plate to which a lower surface of the plurality of split core assemblies are fastened in a circumferential direction;
- and an upper fixing plate that is fastened on an upper surface of the plurality of split core assemblies in the circumferential direction, and
- wherein a first coupling recess that is inserted into a first coupling protrusion formed on the lower fixing plate is formed on a lower surface of the bobbin, and a second coupling recess that is inserted into a second coupling protrusion formed on the upper fixing plate is formed on an upper surface of the bobbin.
11 more elements
Dependencies are inferred from the claim text.