JPS59113750A - Axial air gap induction motor - Google Patents

Abstract

PURPOSE:To enable to obtain characteristics of different flywheel effects and to shorten the axial size of an induction motor by providing two sets of different rotors in a stator core. CONSTITUTION:A main body of an axial air gap induction motor is composed of a stator winding 11 provided on a stator core 10, a core rotor 12, a shaft 14 press-fitted into the rotor 12, bearings 16, 18, the stator core 10, a core lumped rotor 13, a shaft 15 concentrically provided outside the shaft 14 integral with the rotor 13, and bearings 17, 19. When the winding 11 is energized, different rotary torques are generated at the rotors 12, 13 to rotate the rotors. When either one of the rotors 12, 13 is, for example, mechanically secured in this case, only one rotor can be rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an axial air gap induction motor for installation in equipment for industrial and household use.

Structure of the conventional example and its problems Conventional 5 This type of axial gap induction motor has a stator core 1, a stator winding 2, and a shaft 4 press-fitted into the rotor 3, as shown in the first quotient. , and a bearing 5.6,
A stator frame 7 in which a stator core 1, a stator winding 2, etc. are molded into one piece using, for example, non-combustible thermosetting polyester resin or the like.
Generally held by

However, in this configuration, when the rotor 3 is of the iron core type, the flywheel effect of each rotor 3 is large, making it unsuitable for a device that frequently rotates in forward and reverse directions. 1. If the rotor 3 is of a coreless type and made of thin plates made of copper and aluminum, the flywheel effect is reduced, but there is a problem in that the efficiency is extremely reduced.

Purpose of the Invention The present invention solves these conventional problems and provides an axial air gap induction motor in which two rotors of different types are provided and rotational force is obtained from at least one of them. .

Structure of the Invention The axial air gap induction motor of the present invention is composed of two rotors of different types and one stator core, and obtains rotational output from one or both of the rotors. It has been made possible to do so.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 2, stator winding 1 provided on stator core 10
1, iron core type rotor 12, iron core type rotor 12
The shaft 14 press-fitted into the shaft 14, the coreless block type rotor 13 provided in the gap between the bearing 16° 18, the stator core 10, and the cored rotor 12, and the rotor 13 integrated with the shaft 14 outside the shaft 14. The main body of the axial air gap induction motor is composed of a shaft 15 and bearings 1 and 19, which are provided concentrically in It is held by a stator frame 20 that is integrally molded.

To explain the operation of the above configuration, when the stator winding 11 is energized, different rotational torques are generated in the rotors 12 and 13, causing them to rotate. Here, for example, if one of the rotors 12, 13 is mechanically fixed, only one rotor can be rotated. Therefore, it is possible to selectively obtain a small or large momentum effect depending on the purpose, and it is also possible to take out the outputs of both rotors 12 and 13 at the same time.

Effects of the Invention As is clear from the embodiments described above, the axial air gap induction motor of the present invention has two different sets of rotors on one stator core, whereby different characteristics of the flywheel effect can be obtained. At the same time, compared to the case where two axial gap induction motors are installed, the axial dimension can be shortened, the core material and manufacturing man-hours used can be significantly reduced, and manufacturing can be done at low cost. Obtainable. Therefore, it can be applied to a variety of devices including automatic reversing awn devices, and its uses can be expanded.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional axial air gap induction motor, and FIG. 2 is a sectional view of an axial air gap induction motor showing an embodiment of the present invention. 10... Stator core, 11... Inner winding. 12... Iron core type rotor, 13... Iron coreless block type rotor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] A shaft comprising a stator core, a cored rotor, and a coreless block type rotor coaxially provided in a gap between the two rotors, and a shaft that obtains rotational force from at least one of the two rotors. Directional air gap induction motor.