JPH07143710A - Electric motor - Google Patents

Abstract

PURPOSE:To provide an electric motor whose energy efficiency is good by a method wherein an attractive force and a repulsive force are made to act between both poles of an electromagnet and a permanent magnet and the magnetic force of the permanent magnet is made to act with good efficiency. CONSTITUTION:One pole of an electromagnet 4 is faced with a permanent magnet 13 which is arranged on the circumference of a rotor 2, the other pole is faced with a permanent magnet 13 arranged on a side opposite to the rotor 2 by sandwiching the electromagnet 4 so as to correspond to the permanent magnet 13 arranged on the circumference of the rotor 2. An attractive force and a repulsive force which act between both poles of the electromagnet 4 and the permanent magnets 13 are transmitted to a rotor shaft 1 as rotating forces. Alternatively, as another means, permanent magnets 13 which are arranged in two rows in the circumferential direction of a rotor 2 and both poles of an electromagnet 4 are arranged so as to be faced with each other, and an attractive force and a repulsive force are made to act between both poles of the electromagnet 4 and the permanent magnets 13 as driving forces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor.

[0002]

2. Description of the Related Art In a conventional electric motor which utilizes the attraction and repulsion force due to the magnetic force between a permanent magnet and an electromagnet, it is only one pole of the electromagnet that exerts the attraction and repulsion force with the permanent magnet. , The magnetic force of one pole is not used effectively. Further, for this reason, the magnetic force of the permanent magnet is not effectively utilized.

[0003]

SUMMARY OF THE INVENTION According to the present invention, an attractive and repulsive force is applied between both poles of an electromagnet and a permanent magnet, and the magnetic force of the permanent magnet is effectively applied by this, thereby improving energy efficiency. It aims to provide a good electric motor.

[0004]

Means for Solving the Problems One pole of an electromagnet is arranged on the rotor circumference, and the other pole is arranged on the rotor circumference on the opposite side of the rotor with the electromagnet interposed. The permanent magnets arranged so as to correspond to the permanent magnets are opposed to each other, and the attraction and repulsive force acting between both poles of the electromagnet and these permanent magnets are transmitted to the rotor shaft as a rotational force. As another means, the permanent magnets arranged in two rows in the circumferential direction of the rotor are arranged so that the two poles of the electromagnet face each other, and attraction and repulsion between the two poles of the electromagnet and the permanent magnet are performed. Apply force to drive.

[0005]

[Action and Example]

(Embodiment 1) An embodiment according to claim 1 of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of this embodiment, FIG. 2 is a cross-sectional view seen from the front, FIG. 3 is a cross-sectional view of a rotation transmission mechanism portion, and FIGS. 4 and 5 are for explaining the positional relationship and action of the electromagnet and the permanent magnet. FIG. 1 and 2
Therefore, the configuration of the present embodiment will be described first. Reference numeral 1 is a rotor shaft, 2 is a rotor to which a permanent magnet 3 is attached. In the embodiment, an example of 6 poles in which 6 permanent magnets are attached on the circumference is shown. 4 represents 6 electromagnets for this. This electromagnet is attached to a rotating frame 6 which is rotatable about a rotor shaft via a bearing 5. As a result, the permanent magnet 3 and the electromagnet 4 on the rotor side are
And are mutually attracted and repelled, and rotate in mutually opposite directions, but the reaction force received by the electromagnet from the rotor side is the cylindrical bracket 7 attached to the rotating frame.
A cylindrical internal gear 8 mounted on a cylindrical bracket, a small gear 11 whose center of rotation is fixed by a shaft 10 mounted on a casing 9, and a large gear 12 mounted on a rotor shaft.
It is transmitted in the rotation direction of the rotor shaft by a planetary gear mechanism including the above.

Here, the motion of the rotor and the rotor to which the electromagnet is attached will be described with reference to the sectional view of the planetary gear mechanism portion of FIG. The electromagnet and the rotor exert attraction and repulsive forces on each other and rotate in opposite arrow directions shown in the figure by the principle of action and reaction. Here, the motion of the rotating frame in the direction of arrow A is transmitted to the planetary gear mechanism by the cylindrical bracket 7 attached to the rotating frame.
By this planetary gear mechanism, the rotation of the rotating frame in the arrow A direction is converted into the rotating direction of the rotor shaft 1 in the arrow B direction.

Next, the permanent magnets 13 are arranged in the casing circumferential direction on the side opposite to the rotor with the electromagnet sandwiched therebetween, corresponding to the other pole of the electromagnet. The attractive and repulsive forces exerted between the permanent magnet and one pole of the electromagnet are transmitted to the rotor shaft through the rotating frame and can effectively act as a driving force.

Next, the positional relationship and action of the electromagnet and the permanent magnet in this embodiment will be described with reference to FIGS. 4 and 5. For the sake of simplicity, in the figures, the permanent magnets are stationary, and the electromagnets are assumed to move, so that the relative movements are described, and the arrangement of the permanent magnets is also shown at equal intervals. The symbols N and S in the figure respectively indicate the polarities of the magnetic poles. FIG. 4 illustrates the positional relationship and action of the magnetic poles that are usually considered. First, when the electromagnet 3 is excited at the position a in the figure as shown, the electromagnet moves in the direction of the arrow. Next, by switching the excitation direction at the moment when the electromagnet reaches the neutral position of b, the motion of the electromagnet can be continued in the arrow direction. By continuously switching the excitation direction of the electromagnet at such a timing, it is possible to obtain continuous rotary motion on the electromagnet side.

Next, referring to FIG. 5, the positional relationship and action of the electromagnet and the permanent magnet will be described in another way. The idea is to attract the magnetic flux of the permanent magnet from one pole of the electromagnet, thereby strengthening the magnetic force of the electromagnet at the counter pole, and to obtain a force larger than the attraction and repulsive force obtained only by the electromagnet. In the example shown in the figure, the permanent magnet 13 on the casing side attracts the magnetic flux of the permanent magnet, and the magnetic force of the counter electrode is strengthened to increase the attractive repulsive force with the permanent magnet 3 on the rotor side. Further, in order to continue the movement in the arrow direction, it is necessary to switch the excitation direction of the electromagnet at the positions of a, b, ... As in the case of FIG. As described above, according to this embodiment,
Both poles of the electromagnet can effectively act as a drive source.

(Embodiment 2) Another embodiment according to claim 1 of the present invention will be described with reference to a sectional view of FIG. Electromagnet 4
Is attached to a frame 14 which is fixed to the casing 9 and does not move. In addition, the fixed frame 14
Does not interfere with the movement of the rotor shaft because the bearing shaft 5 and the rotor shaft are interposed. The permanent magnets 3 and 13 are arranged on the rotor with the electromagnet sandwiched therebetween and on the circumference of the frame 15 that rotates integrally with the rotor shaft on the opposite side. As a result, the attractive and repulsive forces acting between the pole on one side of the electromagnet and the permanent magnet on the rotor shaft and between the other pole and the permanent magnet on the frame 15 are both transmitted to the rotor shaft and are effective as driving force. Can be applied to. The arrangement of magnetic poles, the positional relationship, and the mutual action are the same as those described with reference to FIGS. 4 and 5. Further, since the frame 15 is fixed to the rotor shaft by the boss 16 and is rotatable with respect to the fixed frame 14 by the bearing 17, the frame 15 and the electromagnet fixed to the frame 15 perform a rotary motion integrated with the rotor shaft. It can be carried out.

(Embodiment 3) An embodiment according to claim 2 of the present invention will be described with reference to a sectional view of FIG. In this embodiment, two rows of a plurality of permanent magnets 3 facing both poles of the electromagnet 4 are used.
Are arranged on the rotor. Therefore, both the attraction and repulsion force acting between the two poles of the electromagnet and the permanent magnet are transmitted to the rotor shaft and can be effectively acted as a driving force. Further, the positional relationship between the electromagnet and the permanent magnets arranged on the both poles, how the magnetic force acts, the switching timing of the excitation direction of the electromagnet, and the like are the same as those described with reference to FIGS. 4 and 5. Also, in this example, the electromagnet is the casing 9
It is attached to the rotor and receives the rotational reaction force of the rotor, but this is attached to a rotating frame rotatable around the rotor shaft as in the first embodiment, and this reaction force is rotated by the planetary gear mechanism. By transmitting in the direction, it can be effectively used as a driving force.

[0013]

According to the present invention, the energy efficiency of a motor driven by attraction and repulsion between an electromagnet and a permanent magnet can be improved for the following reasons.・ Both poles of the electromagnet are effectively used as driving force sources. -The magnetic energy of the permanent magnet is effectively applied by making the magnetic poles of the permanent magnets face each other via the electromagnet.

[Brief description of drawings]

FIG. 1 is a horizontal and vertical sectional view of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the first embodiment of the present invention.

FIG. 3 is a sectional view of a rotation transmission mechanism portion according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining the positional relationship and action of an electromagnet and a permanent magnet.

FIG. 5 is a diagram for explaining the positional relationship and action of the electromagnet and the permanent magnet.

FIG. 6 is a horizontal and vertical sectional view of a second embodiment of the present invention.

FIG. 7 is a horizontal and vertical sectional view of a third embodiment of the present invention.

[Explanation of symbols]

 1 Rotor Shaft 2 Rotor 3 Permanent Magnet 4 Electromagnet 5 Bearing 6 Rotating Frame 7 Cylindrical Bracket 8 Cylindrical Internal Gear 9 Casing 10 Shaft 11 Small Gear 12 Large Gear 13 Permanent Magnet 14 Frame 15 Frame 16 Boss 17 Bearing

Claims (2)

[Claims] 1. A permanent magnet having one pole of the electromagnet arranged on the circumference of the rotor, and the other pole of the permanent magnet arranged on the circumference of the rotor on the opposite side of the rotor with the electromagnet sandwiched therebetween. An electric motor characterized by being opposed to permanent magnets arranged so as to correspond to each other, and transmitting attraction and repulsive force acting between both poles of the electromagnet and the permanent magnet to the rotor shaft as a rotational force. 2. The permanent magnets arranged in two rows in the circumferential direction of the rotor and the two poles of the electromagnet are arranged so as to face each other, and attraction and repulsive force are exerted between the two poles of the electromagnet and the permanent magnet. The electric motor according to claim 1, wherein the electric motor is operated.