JPH0588187U - Variable air force gyro motor - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent slippage when the rotation speed is increased in a variable air gap force gyro motor. The linings 19 and 20 that come into line contact with the conical surfaces 16a and 16b of the rotor 16 are mounted on the surface of the stator 11 and the surface of the electromagnet 12 arranged on the stator 11, and between the rotor 16 and the stator 11. The frictional force has been greatly increased, and slippage is less likely to occur even if the rotation speed is 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 gyro motor according to the related art as described above has the following problems (1) and (2).

(1) 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.

(2) A lining material 9 for generating 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 prior art, the present invention provides a variable air gap force gyromotor that effectively utilizes magnetic force and obtains sufficient frictional force between a rotor and a stator to improve efficiency. To aim.

[0009]

[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. In a variable air gap force gyromotor having a rotor that rotates in a direction opposite to the excitation direction of an electromagnet at a ratio based on a diameter difference from a stator, a variable gap force gyromotor has a roller provided with a joint and having a tapered surface from the center, and Linings are attached to the surface of the stator facing the taper surface of the rotor and the surface of the electromagnetic stone disposed on the stator, and the rotor and the stator are attracted by the electromagnet between the rotor and the stator. Are each in line contact with the lining while maintaining a uniform distance.

[0010]

[Action]

 When the rotor rotates and comes into line contact with the stator, the lining material is provided on the surface of the stator and the surface of the magnet, so the frictional force between the stator and rotor can be greatly increased, and the rotation speed can be increased. However, slippage is less likely to occur, effective shaft output also increases, and higher efficiency can be achieved.

[0011]

【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 is a sectional view showing this embodiment. As shown in the figure, in the stator of the variable air gap motor according to the present embodiment, two stators 11 and 11 having substantially the same structure as the stator 1 shown in FIG. 2 face each other so that the electromagnets 12 and 12 face each other. It has been formed. At this time, the end surface of the magnetic pole 13 on the rotor 16 side and the upper end edges of the frames 15, 15 are tapered surfaces whose height gradually decreases toward the centers of the stators 11, 11. The winding 14 is wound around the magnetic pole 13 as in the case shown in FIG.

The linings 19 and 20 are annularly adhered to the upper edge portions of the stators 11 and 11 and the upper edge portion of the electromagnet 12.

The rotor 16 is disposed between the two stators 11 and 11, and has a shape in which the bottom surfaces of the two cones are matched with each other, and the center of the stators 11 and 11 is set as the center of rotation / swing. In order to be able to rotate while swinging, the central portion is supported by shafts 18 and 18 from both upper and lower sides in the figure via universal joints 17 and 17. The result rotor 16 has a uniform gap with the electromagnets 12 when attracted to the electromagnets 12 of the respective stators 11, 11 (the state shown in FIG. 1), and at the same time as the linings 19 and 20. It has two conical surfaces 16a, 16b that make line contact. At the same time, the conical surfaces 16a, 16b form an angle θ> 0 between the lining 19 and the rotor 16 so that a variable gap is formed on the opposite side (right side in FIG. 1) from the suction side (left side in FIG. 1). Therefore, a diameter difference is generated between the stators 11 and 11.

According to the present embodiment, since the rotor 16 has the conical surfaces 16a and 16b, the gap between the rotor 16 and the electromagnet 12 is uniformly maintained, and the magnetic force of the electromagnet causes the rotor 16 to reach the maximum efficiency. Since the suction is performed, a large rotational torque is obtained, and the frictional force between the linings 19 and 20 is also increased as compared with the conventional case, so that the rotational speed can be increased without causing slippage.

Next, another embodiment of the variable air gap force gyro motor according to the present invention will be described in detail with reference to FIG.

FIG. 2 shows a cross sectional structure of a variable air gap force 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 the shafts 18C and the universal joints 17 and 17 at both ends of the shafts facing each other. 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 circumferentially in an annular frame 15. One stator 11 is located 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 linings 19A and 19B are attached to the upper and lower end surfaces of the stator 11 and annular linings 20A and 20B are attached to the upper and lower end surfaces of the electromagnet 12, respectively.

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.

Further, since the lining materials 19A, 19B, 20A and 20B are mounted on the upper and lower end surfaces of the starter 11 and the electromagnet 12, respectively, the frictional force between the rotor and the stator can be greatly increased.

[0021]

[Effect of the device]

 According to the present invention, the frictional force between the rotor and the stator can be significantly increased by mounting the lining material not only on the frame but also on the magnetic pole surface. Therefore, slippage is less likely to occur even if the rotation speed is increased. In addition, the effective shaft output also increases, leading to higher efficiency.

[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

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,
A variable air gap force gyromotor having a rotor that rotates in a direction opposite to the excitation direction of an electromagnet at a ratio based on a diameter difference from a stator, has a rotor that is provided via a joint and has a tapered surface from the center, and A lining is attached to each of the surface of the stator facing the tapered surface and the surface of the electromagnet arranged on the stator,
A variable air gap force gyromotor, wherein the rotor and the stator are in line contact with the lining while maintaining a uniform distance between the rotor and the stator while the rotor is attracted by the electromagnet.