JPH0730575U - Electric motor - Google Patents

Abstract

(57) [Summary] [Objective] The present invention uses the rotational reaction force of the rotor received on the stator side, which is not used in conventional electric motors, effectively as the driving force, thereby making it more energy efficient than the conventional one. It is intended to provide a good electric motor. [Structure] The stator side and coater side are connected by a rotation transmission device such as a planetary gear mechanism, and the rotation reaction force received by the stator side is transmitted to the rotor side in the rotation direction of the rotor. It is effectively used as a driving force.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an electric motor.

[0002]

[Prior art]

 In the conventional electric motor, the stator is fixed, and the rotational reaction force of the rotor received by the stator is not used as the driving force.

[0003]

[Problems to be solved by the device]

 The present invention intends to provide an electric motor more efficient than the conventional one by effectively utilizing the rotational reaction force received by the stator side, which is not used in the conventional electric motor, as the driving force.

[0004]

[Means for Solving the Problems]

 By connecting the stator side and the rotor side with a rotation transmission device such as a planetary gear mechanism and transmitting the rotation reaction force received by the stator side to the rotor side in the rotation direction of the rotor, the rotation reaction force received by the stator side is effective as a driving force. To use.

[0005]

[Action and Example]

 The structure and operation will be described with reference to the longitudinal sectional view of the embodiment according to the present invention in FIG. Reference numeral 1 represents a stator, and 2 represents a rotor. The driving force in this example is assumed to be due to the attraction / repulsion force between the electromagnetic stone 3 on the stator side and the permanent magnet 4 on the rotor side. Other drive methods used may be used. The rotation of the rotor is transmitted to the outside by the rotor shaft 5. Normally, the stator is fixed to the casing, but in the present invention, the stator is fixed to the rotating frame 7 which is rotatable with respect to the rotor shaft via the bearing 6. The motion of this rotating frame is such that a cylindrical bracket 8 attached to the rotating frame, a cylindrical internal gear 9 attached to the cylindrical bracket, a small gear 12 whose rotation center is fixed by a casing 11 via a shaft 10, and a large gear attached to the rotor shaft. It is transmitted to the rotor side by a planetary gear mechanism including a gear 13 and the like. The movement of the planetary gear mechanism on the rotor side and the stator side will be described with reference to the cross-sectional view of the planetary gear mechanism part in FIG. Now, assuming that the direction of the rotational force received by the rotor due to the repulsive force and the attractive force between the rotor and the stator is the arrow A direction, the rotational direction due to the reaction force received by the stator due to the reaction is the arrow B direction. Here, the rotational force due to the reaction force received by the stator is transmitted to the planetary gear mechanism via the rotating frame and the cylindrical bracket 8 attached to the rotating frame. The small gear 12 of the planetary gear mechanism has its center of rotation fixed and rotates in the direction of arrow C. Therefore, the rotational force in the direction of arrow B received by the stator is transferred to the rotor shaft via the large gear 13 fixed to the rotor shaft 5. , Can be transmitted in the same direction as the rotation direction of the rotor. As described above, according to the present invention, the reaction force received by the stator can be transmitted to the rotor side and utilized as an effective rotational force.

[0006]

[Effect of device]

 In addition to the embodiments, the present invention can be applied to other types of electric motors in which the stator receives the rotational reaction force. By transmitting the reaction force received by the stator in the rotational direction of the rotor, mechanical efficiency etc. can be ignored. Considering this, the torque transmitted to the rotor shaft is doubled compared to the conventional electric motor fixed on the stator side, so that an electric motor with high energy efficiency can be manufactured.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of a planetary gear mechanism portion according to an embodiment of the present invention.

[Explanation of symbols]

 1 Stator 2 Rotor 3 Electromagnet 4 Permanent magnet 5 Rotor shaft 6 Bearing 7 Rotating frame 8 Cylindrical bracket 9 Cylindrical internal gear 10 Shaft 11 Casing 12 Small gear 13 Large gear

Claims (1)

[Scope of utility model registration request] 1. A motor characterized in that a stator side and a rotor side are connected by a rotation transmission device such as a planetary gear mechanism, and a rotational reaction force received by the stator side is transmitted to the rotor side in a rotation direction of the rotor.