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    • 13. 发明公开
    • Stepping motor
    • 步进电机
    • EP2290786A3
    • 2016-01-13
    • EP10170411.2
    • 2010-07-22
    • Minebea Co., Ltd.
    • Matsuno, TakeshiYamamura, YoshiyaItahashi, HiroakiMiyaji, ShigekiTerada, Yukihiro
    • H02K1/14H02K37/14
    • H02K37/14H02K1/145H02K2213/03
    • A stepping motor (10) includes: a rotor assembly (11) including a magnet (13) and rotatably disposed around the rotation axis as center; and a stator assembly (21) disposed around the rotor assembly (11) and including two stator units (22A, 22B) axially coupled to each other. The two stator units (22A, 22B) each include a pair of yokes (23 and 28) which each include an annular ring shaped base portion (24/29) and a plurality of pole teeth (25/30) bent up from an inner circumference (24a/29a) of the base portion (24/29) and which are disposed such that each of the pole teeth (25) of one yoke (23) and each of the pole teeth (30) of the other yoke (28) are arranged alternately in a circumferential direction. The plurality of pole teeth (25/30) are each shaped symmetric with respect the direction of the rotation axis and include a pair of slant sides (25a and 25a / 30a and 30a) which are inclined so as to become closer to the symmetry center in accordance with an increase of distance from the base portion (24/29), and the slant side (25a) of the one yoke (23) is located close to the slant side (30a) of the other yoke (28) such that a magnetic pole gap (G) between adjacent pole teeth pole teeth (25 and 30) is about 0.2 times as large as the thickness of the pole teeth (25/30).
    • 14. 发明公开
    • A MOTOR DRIVING APPARATUS
    • 电动机驱动装置
    • EP2939335A1
    • 2015-11-04
    • EP13867328.0
    • 2013-12-19
    • Canon Kabushiki Kaisha
    • AOSHIMA, Chikara
    • H02K37/14H02K11/00H02P8/38
    • H02P8/14H02K11/215H02K29/08H02K37/14H02P8/06H02P8/38
    • A motor driving apparatus includes a rotor, a first yoke including a first magnetic portion, a first coil configured to, if energized, excite the first magnetic portion, a second yoke including a second magnetic portion, a second coil configured to, if energized, excite the second magnetic portion, a detecting portion including a first detection element, a second detection element, a third detection element, and a fourth detection element, each detection element being configured to detect a rotation position of the rotor, and a controller configured to switch a pole excited by the first magnetic portion and the second magnetic portion by switching an energization direction of the first coil and the second coil based on an output of the detecting portion.
    • 一种电动机驱动装置,包括:转子;第一磁轭,包括第一磁性部分;第一线圈,被配置为如果通电则激励第一磁性部分;第二磁轭,包括第二磁性部分;第二线圈,被配置为如果被激励, 激励第二磁性部分;检测部分,其包括第一检测元件,第二检测元件,第三检测元件和第四检测元件,每个检测元件被配置为检测转子的旋转位置;以及控制器, 通过基于检测部分的输出切换第一线圈和第二线圈的通电方向来切换由第一磁性部分和第二磁性部分激励的磁极。
    • 19. 发明公开
    • Rotor for hybrid type stepping motor and manufacturing method thereof
    • 转子用于混合步进电机及其制造方法
    • EP1672771A3
    • 2009-07-08
    • EP05257664.2
    • 2005-12-14
    • Sanyo Denki Co., Ltd.
    • Koike, AkiraTakeshita, Ikuo
    • H02K37/14
    • H02K37/14
    • The present invention provides a rotor for a hybrid type stepping motor in which position alignment of rotor collar and rotating shaft can be easily performed and relative displacement in a radial direction of the rotating shaft can be prevented from occurring between rotor stacks and a rotor collar.
      Depressed portions for being fitted with a rotor collar 8A are formed in two rotor stacks 7B, 7A opposed to each other in an axial direction of the rotating shaft 1 with the rotor collars 5A, 5B therebetween. Each of the rotor collars 5A, 5B includes a central portion 5a extending in the radial direction of the rotating shaft 1 and a pair of fitting portions 5b which are disposed at both sides of the central portion 5a in the axial direction of the rotating shaft 1 and are fitted into the depressed portions 8A. Shapes of the depressed portions 8A and fitting portions 5b are both defined so that there occurs no relative displacement in the radial direction of the rotating shaft 1 between the rotor stacks 7B, 7A and the rotor collars 5A, 5B with the fitting portions 5b fitted into the depressed portions 8A.