MOTOR APPARATUS AND CLEANER HAVING THE SAME
First Claim
1. A motor apparatus, comprising:
- a shaft rotatably installed;
a fan connected to one side of the shaft to generate a flow of air;
a stator including one or more stator cores arranged in a circumferential direction, and a coil wound around the one or more stator cores; and
a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage at a main axis thereof allowing the shaft to pass therethrough,wherein the rotor comprises a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force.
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Accused Products
Abstract
A motor apparatus having a high efficiency and reducing manufacturing cost by using a cost effective ferrite permanent magnet includes a rotatable shaft, a fan connected to one side of the shaft to generate a flow of air, a stator including stator cores arranged in a circumferential direction, and a coil wound around the stator core, and a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage allowing the shaft to pass through the rotor includes a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force. By using a ferrite magnet, when compared to a conventional universal motor, a superior efficiency is obtained, and when compared to a BLDC motor using a Nd magnet, a low cost BLDC motor is implemented.
14 Citations
30 Claims
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1. A motor apparatus, comprising:
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a shaft rotatably installed; a fan connected to one side of the shaft to generate a flow of air; a stator including one or more stator cores arranged in a circumferential direction, and a coil wound around the one or more stator cores; and a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage at a main axis thereof allowing the shaft to pass therethrough, wherein the rotor comprises a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A cleaner having a body forming an external appearance thereof, a motor apparatus to generate a suction force and a brush head having a predetermined length to make contact with a surface to be cleaned, the motor apparatus comprising:
a shaft forming a central axis;
a motor cover having an inlet hole to suction air;
a fan connected to one side of the shaft and located adjacent to the motor cover;
a rotor having a ferrite magnet coupled to a rotor core with a protrusion structure and rotatably installed at the shaft; and
a stator circumferentially coupled to the rotor and having a coil wound therearound.- View Dependent Claims (21, 22, 23, 24, 25)
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26. A motor apparatus, comprising:
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a shaft rotatably installed; a stator including one or more stator cores arranged in a circumferential direction, and a coil wound around the one or more stator cores; and a rotor disposed at an inside of the stator and provided in a form of a cylinder having a passage at a main axis thereof allowing the shaft to pass therethrough, wherein the rotor comprises a rotor core provided with a protrusion structure and one or more ferrite magnets coupled to the rotor core to provide a magnetic force. - View Dependent Claims (27, 28, 29, 30)
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Specification