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Motor and rotor for dynamo-electric machine

A technology for rotating electric machines and electric motors, which is applied in the field of electric motors and can solve the problems of reduced magnetic flux, reduced motor torque, and complex stator structure

Inactive Publication Date: 2010-11-24
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the motor proposed in Japanese Patent Application No. 2007-026422 has the following problem: since the phases of the first armature column and the phase of the second armature column of the stator are staggered by a half pitch (90° in electrical angle), So the structure of the stator becomes complicated
[0013] In addition, the permanent magnet of the rotor of the motor performs magnetic flux transfer (receiving け crossing し) between the armature of the stator facing it, but among the plurality of permanent magnets installed on the rotor, when the magnetic flux is between two adjacent When the magnetic poles of different polarities of the permanent magnets are short-circuited, there is a problem that the magnetic flux passing between the permanent magnets of the rotor and the armature of the stator decreases, and the torque generated by the motor decreases.

Method used

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  • Motor and rotor for dynamo-electric machine

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no. 1 approach

[0111] First, based on Figure 1 to Figure 15 The first embodiment of the present invention will be described.

[0112] Such as Figure 7 As shown, the motor M of this embodiment includes: a housing 11, which is in the shape of an octagonal cylinder short in the direction of the axis L; and a ring-shaped first stator 12L and a second stator 12R, which are fixed to the housing. 11; a cylindrical outer rotor 13, which is housed inside the first and second stators 12L, 12R and rotates around the axis L; and a cylindrical inner rotor 14, which is housed in the outer rotor 13 internally and rotates about the axis L. The outer rotor 13 and the inner rotor 14 can rotate relative to the fixed first and second stators 12L and 12R, and the outer rotor 13 and the inner rotor 14 can rotate relative to each other.

[0113] by such as figure 1 as well as figure 2 It can be seen that the housing 11 is composed of a bottomed octagonal cylindrical main body 15 and an octagonal plate-sha...

no. 2 approach

[0159] Second, based on Figure 16 A second embodiment of the present invention will be described.

[0160] In the motor M of the first embodiment, the polarity of the first armature 21L... of the first stator 12A and the polarity of the second armature 21R... of the second stator 12B are adjacent to each other in the axis L direction. consistent. The second embodiment is an embodiment in which the first and second armatures 21L, 21R, .

[0161] Thus, by integrating the first armature 21L... and the second armature 21R... of the first embodiment as the armature 21..., the first stator 12A and the second stator 12B can be integrated into one stator 12. Accordingly, reduction in the number of components and further simplification of the structure can be achieved, and the motor M can function the same as that of the first embodiment.

no. 3 approach

[0163] Second, based on Figure 17 A third embodiment of the present invention will be described.

[0164] The third embodiment is an embodiment in which each of the first permanent magnet 52L or the second permanent magnet 52R constituting one magnetic pole of the inner rotor 14 is divided into two. In this case, in order to form one magnetic pole with two permanent magnets, it is necessary that the polarities of these two permanent magnets match.

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Abstract

A motor (M) comprises first and second stators (12L, 12R) on the outside forming a rotating field, an outer rotor (13) arranged on the inside thereof and having first and second induction magnetic poles (38L, 38R), and an inner rotor (14) arranged on the inside thereof and having first and second permanent magnets (52L, 52R). Since the phases of the first and second induction magnetic poles (38L,38R) of the outer rotor (13) are shifted from each other by one half of a predetermined pitch, and the phases of the first and second permanent magnets (52L, 52R) of the inner rotor (14)are shifted from each other by a predetermined pitch, the phases and the polarities of the first and second stators (12L, 12R) facing the first induction magnetic pole (38L) and the second induction magnetic pole (38R) can be made identical and thereby the structure of the first and second stators (12L, 12R) can be simplified.

Description

technical field [0001] The present invention relates to an electric motor. The electric motor has: an annular stator arranged to surround an axis; a first rotor rotatable around the axis; a second rotor arranged between the stator and the first rotor. between the rotors and can rotate around the axis. Furthermore, the present invention relates to a rotor for a rotating electric machine and an electric motor using the rotor for a rotating electric machine. Background technique [0002] As a conventional electric motor, for example, the technique described in Patent Document 1 below is known. The motor has an inner rotor, a stator, and an outer rotor. The inner rotor is a cylindrical inner rotor with a plurality of permanent magnets slightly extending in the radial direction arranged in the circumferential direction, and the stator is arranged in the circumferential direction. A plurality of armatures, and a cylindrical stator fixed by resin molding. The outer rotor is forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/02
CPCH02K16/00H02K16/02H02K7/11H02K21/16
Inventor 板东真史阿部典行圷重光大矢聪义
Owner HONDA MOTOR CO LTD
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