Title:
TWO-PHASE HYBRID TYPE STEPPING MOTOR
Document Type and Number:
Japanese Patent JP2016226171
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that, in a conventional eight-coil electrode stator structure, it is difficult to improve torque of a two-phase hybrid type stepping motor of which the motor size is about 10 mm and the resolution (the number of steps per rotation) is about 100, at low cost.SOLUTION: In the two-phase hybrid type stepping motor, from both ends of a substantially arcuate yoke part 2, (m) pieces of tooth groups are provided radially in a radial direction. In the yoke part 2, two unit stators 1 with a winding shaft having a winding in a circumferential direction are disposed while keeping a predetermined angle in a circumferential direction. A substantially disc-shaped permanent magnet which is magnetized in an axial direction is held by deviating two magnetic bodies between which there is an air gap and each of which has N pieces of teeth at an electric angle of 180° from each other. In a central part thereof, a so-called hybrid rotor having a rotary shaft 20 is disposed oppositely in a freely rotatable manner, where (m) is a positive integer and N is a positive integer equal to or greater than 8.SELECTED DRAWING: Figure 1
Inventors:
SAKAMOTO MASABUMI
UCHIDA NOBORU
IZUMI MASAHARU
UCHIDA NOBORU
IZUMI MASAHARU
Application Number:
JP2015110686A
Publication Date:
December 28, 2016
Filing Date:
May 29, 2015
Export Citation:
Assignee:
FUJITA DENKI SEISAKUSHO:KK
International Classes:
H02K37/14; H02K1/16
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