JPH0588188U - Variable air force gyro motor - Google Patents

Abstract

(57) [Abstract] [Purpose] To effectively use magnetic flux in a variable air gap force gyro motor. [Structure] The same number of permanent magnets 2 as the magnetic poles 13 are provided in the stator.
By arranging 1, the polarities of the winding and the magnet are such that these magnetic fluxes strengthen each other. As a result, a static torque can be obtained without passing a current through the winding, and even during rotation, the magnetic flux of the winding and the magnetic flux of the permanent magnet are mutually strengthened, so that the rotational torque can be increased.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a variable air gap force gyromotor, and in particular, it is devised to significantly increase the frictional force between the rotor (rotor) and the stator (stator) so that slippage does not easily occur even when the rotation speed is increased.

[0002]

[Prior Art]

 The variable air gap force gyro motor is a motor suitable for low speed and high torque, and its principle is a plate-shaped rotor in which a plurality of electromagnets are annularly arranged around a stator so that the rotor can rotate and swing. The magnetic attraction force on the rotor side is sequentially changed by sequentially changing the excitation of the electromagnet, and the rotor is rotated little by little in the direction opposite to the excitation direction of the stator electromagnet (rotation) at a ratio generated based on the diameter difference between the rotor and the stator. ).

More specifically, as shown in FIG. 3 to FIG. 5, the electromagnet 2 forming the stator 1 is formed by winding a winding wire 4 around a magnetic pole 3 which is a fan-shaped block. In this example, six pieces (see FIG. 5A) are annularly arranged on the frame 5 forming the stator 1. A thin disk-shaped rotor 6 is supported by a shaft 8 at the center of the stator 1 via a universal joint 7, and is oscillated around the center of the frame 1 when the electromagnet 2 is excited. While moving, it comes into contact with the lining 9 attached to the upper edge of the frame 5 in an annular shape, and rotates in the direction opposite to the excitation direction of the electromagnet 2.

A square wave voltage as shown in FIG. 5B is applied to each electromagnet 2. The reference numerals # 1 to # 6 of the electromagnet 2 shown in FIG. 4A correspond to # 1 to # 6 of FIG. 5B.

[0005]

The variable air gap force gyromotor according to the prior art as described above has the following problems (1) to (3).

(1) Since the stator is composed of an electromagnet composed of laminated iron cores and windings, it is necessary to keep the current flowing through the windings in order to obtain a stop torque.

(2) Since the rotor 6 is a thin disk, the gap between the rotor 6 and the magnetic pole 3 becomes larger toward the center of the motor. Therefore, the magnetic force that attracts the rotor 6 decreases toward the center, and the magnetic flux cannot be effectively used.

(3) A lining material 9 for generating a frictional force is mounted on the stator 1 side in order to prevent the rotor 6 from slipping, but since the lining material 9 and the rotor 6 are in point contact with each other, Sufficient frictional force cannot be obtained, and slippage occurs when the rotation speed is increased.

In view of the above-mentioned conventional technique, the present invention provides a variable air gap force gyromotor that effectively utilizes magnetic flux and obtains sufficient frictional force between a rotor and a stator to improve efficiency. To aim.

[0010]

[Means for Solving the Problems]

 The structure of the present invention that achieves the above object is such that a stator provided with a plurality of electromagnets arranged in an annular shape, and while being attracted to the electromagnets in order, the center of the stator is rotated and swung about a swinging center. , A variable air gap force gyromotor having a rotor that rotates in a direction opposite to an exciting direction of an electromagnet at a ratio based on a diameter difference from a stator, two conical rotors connected via a joint, and It is arranged between two conical rotors, and each conical rotor is in line contact with the lining with a uniform distance maintained between the conical rotors when attracted by an electromagnet. The present invention is characterized in that it has a stator in which individual faces are formed, and that the same number of permanent magnets as the magnetic poles forming the electromagnet of the stator are arranged.

[0011]

[Action]

 By arranging as many permanent magnets as magnetic poles in the stator, the polarities of the windings and magnets will strengthen these magnetic fluxes, and as a result, static torque can be obtained without passing current through the windings. You can Further, even during rotation, the magnetic flux of the winding and the magnetic flux of the permanent magnet are always strengthened with each other, so that the rotational torque can be increased.

[0012]

【Example】

 Hereinafter, a preferred embodiment of a variable air gap force gyro motor according to the present invention will be described with reference to the drawings.

FIG. 1 shows a sectional structure of a variable air gap gyro motor according to an embodiment of the present invention. The rotor of this motor is composed of thin conical rotors 16A and 16B in which upper and lower parts are hollowed out. The rotors 16A and 16B are connected to each other with their shafts facing each other with their shafts 18C facing each other by a shaft 18C and universal joints 17 and 17 at both ends of the shaft. Further, the rotors 16A and 16B are supported on the shafts 18A and 18B via the universal joints 17 and 17 inside the respective tops so that they can rotate while swinging around the center of the stator 11 and the swing center. is there.

The stator 11 has a plurality of electromagnets 12 arranged in a circular shape in an annular frame 15, and one stator 11 is positioned between two conical rotors 16A and 16B. . The upper and lower end surfaces of the magnetic pole 13 of each electromagnet 12 and the upper and lower end surfaces of the frame 15 are tapered conical surfaces that gradually incline toward the center of the stator 11. The winding 14 is wound around the magnetic pole 13, and the linings 19A and 19B are annularly attached to both upper and lower end surfaces of the stator 11. Further, the same number of permanent magnets 21 as the magnetic poles 13 forming the electromagnet 12 are arranged in the center of the stator 11.

With the above-described configuration of the stator and the rotor, the upper and lower rotors 16A and 16B are attracted by the electromagnets 12 of the stator 11, that is, the gap between the rotors 16A and 16B is uniform with the electromagnets 12 in the state of FIG. At the same time, the conical surfaces of the rotors 16A and 16B make line contact with the linings 19A and 19B. On the side of the conical surface of each rotor 16A, 16B that is not sucked, a variable air gap is formed, and the angle between the linings 19A, 19B and the corresponding rotors 16A, 16B is greater than zero. This causes a difference in diameter between the stator 11 and the rotors 16A and 16B.

By arranging the same number of permanent magnets 21 as the magnetic poles 13 in the stator, the magnetic fluxes of the windings and the magnets strengthen each other. As a result, a static torque can be obtained without passing a current through the winding, and even during rotation, the magnetic flux of the winding and the magnetic flux of the permanent magnet are mutually strengthened, so that the rotational torque can be increased.

Further, as shown in FIG. 2, in addition to the lining materials 19A and 19B at the upper and lower ends of the stator 11, linings 20A and 20B are further provided at the upper and lower ends of the electromagnet 12, thereby further improving the rotor and the stator. The frictional force between can be increased.

[0018]

[Effect of the device]

 According to the present invention, one rotor is sandwiched by two rotors, and the same number of permanent magnets as the magnetic poles are arranged in the center of the stator, whereby the following effects (1) to (3) are obtained. (1) The static torque can be obtained without passing a current through the winding. (2) Even during rotation, the magnetic flux of the winding and the magnetic flux of the permanent magnet are always strengthened with each other, so that the rotational torque can be increased. (3) Since the contact area between the lining material mounted on the frame and the rotor is twice as large as that of one rotor, it is possible to increase the frictional force, and it is possible to slide both when stopped and when rotated. Is less likely to occur.

[Brief description of drawings]

FIG. 1 is a diagram showing a variable air gap force gyro motor according to an embodiment of the present invention.

FIG. 2 is a view showing a variable air gap force gyro motor according to another embodiment of the present invention.

FIG. 3 is a diagram showing a conventional variable void force gyro motor.

FIG. 4 is a diagram showing a conventional motor component.

FIG. 5 is a diagram for explaining the operation.

[Explanation of symbols]

11 Stator 12 Electromagnet 13 Magnetic pole 14 Winding 15 Frame 16A, 16B Conical rotor 17 Universal joint 18A, 18B, 18C Shaft 19, 19A, 19B, 20, 20A, 20B Lining 21 Permanent magnet

Claims (1)

[Scope of utility model registration request] 1. A stator comprising a plurality of electromagnets arranged in an annular shape, and while being attracted to the electromagnets in sequence, the center of the stator is swung about a center of rotation and swing,
In a variable air gap force gyromotor having a rotor rotating in a direction opposite to an exciting direction of an electromagnet at a ratio based on a diameter difference from a stator, two conical rotors connected via a joint, and the two cones. The two surfaces are arranged between the rotors and are in line contact with the lining while maintaining a uniform distance between the conical rotors with the electromagnets attracting the conical rotors. A variable air gap force gyromotor having the formed stator and having the same number of permanent magnets as magnetic poles forming the electromagnet of the stator.