SELF MAGNETIZING MOTOR

Abstract

A self magnetizing motor is disclosed, which comprises a stator which is comprised of a plurality of sheets including a plurality of stator slots and exciter slots formed at fixed intervals along an outer circumferential surface of the center, a teeth provided between each of the stator slots, and an exciter pole formed between the exciter slots; an exciter coil which is wound on each exciter slot; and a rotor which is rotatably inserted into the center (C) of the stator, and is provided with an exciter magnetizable portion on an outer circumferential surface to be magnetized by the exciter coil; wherein the exciter pole is positioned at the part of the stator to form a back yoke of an increased size. Preferably, the exciter pole is positioned at corner of the stator so that a rear stator portion of the exciter pole is increased in size.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

In the drawings:

FIG. 1 is an exploded perspective view illustrating a related art self magnetizing motor;

FIG. 2 is a cross sectional view illustrating the self magnetizing motor shown in FIG. 1;

FIG. 3 is a cross sectional view illustrating a self magnetizing motor according to one preferred embodiment of the present invention; and

FIG. 4 is an expanded view illustrating ‘A’ of FIG. 3.

Claims

1. A self magnetizing motor comprising: a stator which is provided with a plurality of sheets including a plurality of stator slots formed at fixed intervals along an outer circumferential surface of the center, a teeth provided between each of the stator slots, one pair of exciter slots positioned at corners, and an exciter pole formed between the exciter slots; anda rotor which is rotatably inserted into the center (C) of the stator, and is provided with an exciter magnetizable portion on an outer circumferential surface to be magnetized by the exciter coil.

2. The self magnetizing motor of claim 1, wherein the exciter slots are positioned at both sides on a rotation line (LR) which is obtained as rotating the central point (O) of the center (C) by any one angle of 45°, 135°, 225°, and 315° counter clockwise with respect to a horizontal line (LH) passing through the central point (O) of the center (C).

3. A self magnetizing motor comprising: a stator which is comprised of a plurality of sheets including a plurality of stator slots and exciter slots formed at fixed intervals along an outer circumferential surface of the center, a teeth provided between each of the stator slots, and an exciter pole formed between the exciter slots;an exciter coil which is wound on each exciter slot; anda rotor which is rotatably inserted into the center (C) of the stator, and is provided with an exciter magnetizable portion on an outer circumferential surface to be magnetized by the exciter coil;wherein the exciter pole is positioned at the part of the stator to form a back yoke of an increased size.

4. The self magnetizing motor of claim 3, wherein the exciter pole is positioned on a rotation line (LR) which is obtained as rotating the central point (O) of the center (C) by any one angle of 45°, 135°, 225°, and 315° counter clockwise with respect to a horizontal line (LH) passing through the central point (O) of the center (C).

5. The self magnetizing motor of claim 3, wherein a gap (x) between the end of the exciter pole and the outer circumferential surface of the exciter magnetizable portion is smaller than a gap (y) between the end of the teeth and the outer circumferential surface of the excite magnetizable portion.

6. The self magnetizing motor of claim 3, wherein some portions of the end of the teeth being positioned close to the exciter slot are removed, and a tapered portion is formed in the end of the exciter pole.

7. A self magnetizing motor comprising: a stator which is provided with a plurality of sheets including a plurality of stator slots formed at fixed intervals along an outer circumferential surface of the center, a teeth provided between each of the stator slots, one pair of exciter slots positioned at corners, and an exciter pole formed between the exciter slots; anda rotor which is rotatably inserted into the center (C) of the stator, and is provided with an exciter magnetizable portion on an outer circumferential surface to be magnetized by the exciter coil,wherein a gap (x) between the end of the exciter pole and the outer circumferential surface of the exciter magnetizable portion is smaller than a gap (y) between the end of the teeth and the outer circumferential surface of the excite magnetizable portion, some portions of the end of the teeth being positioned close to the exciter slot are removed, and a tapered portion is formed in the end of the exciter pole.

8. The self magnetizing motor of claim 7, wherein the exciter slot is positioned on a rotation line (LR) which is obtained as rotating the central point (O) of the center (C) by any one angle of 45°, 135°, 225°, and 315° counter clockwise with respect to a horizontal line (LH) passing through the central point (O) of the center (C).