Stator unit, stator, and motor comprising same
First Claim
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1. A stator unit comprising:
- a unit stator core;
an insulator disposed on the unit stator core; and
a coil wound around the insulator,wherein the unit stator core includes a main body having a predetermined curvature based on a virtual center, wherein the main body includes;
only three teeth protruding toward the virtual center;
notches formed between the teeth,wherein each unit stator core includes a first side surface having a triangular shape extending into the main body in a circumferential direction and a second side surface opposite to the first side surface having a triangular shape extending outwardly from the main body in the circumferential direction,wherein each notch is formed on an inner circumferential surface of the main body, each notch is opened from the inner circumferential surface of the main body and each notch faces the virtual center, andwherein each notch extends more than halfway between the inner circumferential surface of the main body and an outer circumferential surface of the main body.
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Abstract
Embodiments relate to a stator unit, a stator, and a motor comprising same, the stator unit comprising: a unit stator core; an insulator disposed on the unit stator core; and a coil wound on the insulator, wherein the unit stator core comprises a main body formed so as to have a prescribed curvature with reference to the centre, and three teeth formed so as to protrude toward the centre from the main body, the main body comprising notches formed between the teeth. Thus mass productivity can be increased as a result of series winding using a coil on a unit stator core having three teeth arranged thereon.
16 Citations
20 Claims
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1. A stator unit comprising:
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a unit stator core; an insulator disposed on the unit stator core; and a coil wound around the insulator, wherein the unit stator core includes a main body having a predetermined curvature based on a virtual center, wherein the main body includes; only three teeth protruding toward the virtual center; notches formed between the teeth, wherein each unit stator core includes a first side surface having a triangular shape extending into the main body in a circumferential direction and a second side surface opposite to the first side surface having a triangular shape extending outwardly from the main body in the circumferential direction, wherein each notch is formed on an inner circumferential surface of the main body, each notch is opened from the inner circumferential surface of the main body and each notch faces the virtual center, and wherein each notch extends more than halfway between the inner circumferential surface of the main body and an outer circumferential surface of the main body. - View Dependent Claims (2, 3, 4)
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5. A stator formed by a plurality of stator units disposed along a circumferential direction, each of the stator units comprising:
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a unit stator core; an insulator disposed on the unit stator core; and a coil wound around the insulator, wherein the unit stator core includes a main body having a predetermined curvature based on a virtual center, wherein the main body of each stator unit includes; three teeth protruding toward the virtual center; and notches formed between the teeth, wherein each notch is formed on an inner circumferential surface of the respective main body, each notch is opened from the inner circumferential surface of the main body and each notch faces the virtual center, wherein each notch extends more than halfway between the inner circumferential surface of the main body and an outer circumferential surface of the main body, and wherein two stator units among the plurality of stator units are configured to be implemented as a same phase and are symmetrically disposed with respect to a center of the stator. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A motor comprising:
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a rotary shaft; a rotor having the rotary shaft disposed at a center thereof; a stator disposed at the outside of the rotor; a housing configured to accommodate the rotor and the stator; and a bus bar disposed on the stator, wherein the stator is formed by disposing a plurality of stator units along a circumferential direction, wherein each stator unit includes; a unit stator core; an insulator disposed on the unit stator core; and a coil wound around the insulator and having an end portion connected to the bus bar, wherein each unit stator core includes a main body having a predetermined curvature based on a virtual center, wherein the main body of each stator unit includes; three teeth protruding toward the virtual center; and
,notches formed between the teeth, wherein each notch is formed on an inner circumferential surface of the respective main body, each notch is opened from the inner circumferential surface of the main body and each notch faces the virtual center, wherein each notch extends more than halfway between the inner circumferential surface of the main body and an outer circumferential surface of the main body, and wherein two stator units among the plurality of stator units are configured to be implemented as a same phase and are symmetrically disposed with respect to a center of the stator. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification