KR101497236B1 - DC homopolar motor - Google Patents

Abstract

The present invention relates to a DC homopolar motor, and more particularly, to a device which drives a motor by using any one polar of an N polar and an S polar and a structure thereof. A DC homopolar motor for achieving the above-described object comprises: a cylindrical armature, wherein a groove and a tooth of an armature core are disposed so that an interior of the groove and an exterior of the teeth are symmetrical with each other, and an armature conductor is wound from an outer groove to an inner groove and fixed to a motor body armature support; and a cylindrical field magnet, wherein the field magnet is constituted by an outer magnet of the armature and an inner magnet of the armature and fixed by a shaft. When a DC power is applied to the armature, the outer magnet generates an electromotive force together with an outer conductor of the armature core, and the inner magnet generates an electromotive force together with an inner conductor of the armature core to rotate the field magnet. As described above, since the DC homopolar motor does not include a commutator and a brush, a coil is wound around the armature in series. Thus, since a power ranging from low voltage current of 24V/50A to high voltage current of 2000V/500A is applied according to necessary load states, a variety of loads can be realized by using one motor. Also, since a wire passing through a diameter of the armature has a length which is reduced by 95% or more when the coil is wound around the armature, efficiency of the DC homopolar motor can be improved.

Description

Single-pole DC motor {DC homopolar motor}

1 is a cross-sectional view showing a configuration of a single-pole DC motor according to an embodiment of the present invention

Fig. 2 is a longitudinal cross-sectional view taken along line A-A of Fig. 1 showing the structure of the single-pole DC motor of the embodiment of the present invention

Figure 3 is a cross-sectional view of the field-

Figure 4 is an armature perspective view of Figure 1 of an embodiment of the present invention.

Figure 5 is a cross-sectional view of the armature core of the armature of Figure 4 of an embodiment of the present invention

Figure 6 is a cross-sectional view taken along line B-B of Figure 4 of an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along the line C-C of FIG. 4

* Explanation of key codes *

1: motor body 2: shaft 3: field stimulus 3a: external stimulus 3b: internal stimulus 3c: stimulus support 4: armature 4a: armature support 4b: armature core 4c: armature core outer conductor 4d: armature core inner conductor 4e: Outer groove 4f: armature core inner groove 5: input terminal

The present invention relates to a single-pole DC motor, and is intended to provide an apparatus and a structure for driving a motor using either N pole or S pole.

Generally, DC motors with commutators and brushes have advantages in that they are easy to control the motors, but they have disadvantages such as electric flame, noise and short life due to commutator and brush. In terms of efficiency, For windings passing through the electron diameter, there is a pure loss which does not help the motor rotation at all. Looking at the length of the winding passing through the diameter of the winding and the rotor involved in the rotation is very small. Therefore, the DC motor has a structure which is inevitably low in efficiency. The larger the diameter of a DC motor that requires a large force, the greater the loss and the lower the efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure in which a commutator and a brush are not provided in order to solve the problems as described above, and the length of a winding passing the rotor diameter of the armature can be minimized. It is an object of the present invention to provide a structure and an apparatus for easily winding an armature winding so as not to exceed an armature diameter.

In order to achieve the above object, an armature of a single-pole DC motor is constituted by a cylinder, wherein a winding groove of the armature core is formed symmetrically with the outer groove of the armature core and the inner groove of the armature core, , And is fixed to a shaft support of the motor body. The field pole is composed of a cylinder, and is constituted by an external pole of the armature and an internal pole of the armature, and is fixed to a shaft. N pole, and if the external magnetic pole is the S pole, the inner magnetic pole is also the S pole, and when the direct current is applied to the input terminal of the armature, the external magnetic pole generates an electromotive force with the armature core external conductor, It is a single-pole DC motor in which an internal conductor and an electromotive force are generated, and a field stimulus is rotated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a cross-sectional view showing the configuration of a single-pole DC motor according to the embodiment of the present invention. The field pole 3 is fixed to a shaft 2 by an external pole 3a and an internal pole 3b, And is fixed to the armature support 4a of the motor body 1 so as to be held between the external magnetic pole 3a and the internal magnetic pole 3b.

FIG. 2 is a longitudinal cross-sectional view of the single-pole DC motor shown in FIG. 1 according to the embodiment of the present invention. The field pole 3 composed of the motor main body 1 and the cylinder has an outer pole 3a and an inner pole 3b, And the armature 4 is constituted by a cylinder and is held between the outer magnetic pole 3a and the inner magnetic pole 3b so that the outer magnetic pole 3a is connected to the armature core outer conductor 4c and the electromotive force And the inner magnetic poles 3b generate an electromotive force with the armature core inner conductor 4d.

3 is a perspective view of the field magnet 3 shown in Fig. 1 of the embodiment of the present invention. The polarity of the magnetic pole 3 is such that the inner magnetic pole 3b is N pole if the outer pole 3a is N pole, Is an S pole, the inner magnetic pole 3b is also an S pole.

Fig. 4 is a perspective view of the armature 4 of Fig. 1 according to the embodiment of the present invention. The armature 4 is constituted by a cylinder.

Figure 5 is a sectional view of the armature core 4b of the armature 4 of Figure 4 of the present invention in which the armature core grooves and teeth for the armature winding 4 are connected to the armature core outer grooves 4e, And the grooves 4f are symmetrical.

Fig. 6 is a cross-sectional view of the armature 4B-B in Fig. 4 of the embodiment of the present invention, in which the armature 4 conductor is composed of an armature core outer conductor 4c and an armature core inner conductor 4d.

Fig. 7 is a cross-sectional view taken along line C-C of the armature (4) of Fig. 4 of the embodiment of the present invention, showing the winding direction of the armature (4). The armature 4 winding is wound in series from the armature core outer groove 4e to the armature core inner groove 4f so as to apply DC electricity to the input terminal 5. [

As described above, since the single-pole DC motor has no commutator and brush, the armature can be wound in series to apply a high voltage of 2000 V or 500 A and a high current from a low voltage current of 24 V or 50 A, , Multiple layers of load can be used as one motor. In addition, in the winding of the armature, since the length of the winding passing through the armature diameter is shortened by 95% or more, the single-pole DC motor is improved in efficiency.

Claims (1)

The field pole 3 composed of a cylinder is constituted by the outer pole 3a and the inner pole 3b at a predetermined interval and the polarity of the pole 3 is the same as the polarity of the inner pole 3b And the inner magnetic pole 3b is also an S pole when the outer magnetic pole 3a is an S pole and the field magnetic pole 3 and the armature 4 fixed to the shaft 2 are made of a cylinder The armature core outer groove 4e and the armature core inner groove 4f are symmetrically arranged in the groove of the armature core 4b for winding the armature 4, Is fixed to the armature support 4a of the motor main body 1 so that the armature 4 is held between the external magnetic pole 3a and the internal magnetic pole 3b so that the armature 4a is fixed to the armature support 4a, The external magnetic pole 3a generates an electromotive force with the armature core external conductor 4c and the internal magnetic pole 3b is generated by the armature core internal conductor 4d and the electromagnet core internal conductor 4c, Is generated, the field magnetic pole single-pole DC motor (3) rotates.

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