| 摘要 |
<p>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.</p><p><Paragraphs id="pa02" num="0002" xmlns:base="http://www.sipo.gov.cn/XMLSchema/base">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.
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