发明授权
US08127320B2 Thread motor and playback device 失效
螺纹电机和回放装置

Thread motor and playback device
摘要:
A thread motor is disclosed. The thread motor includes: a cylindrical rotor; a ring-shaped gear provided at an outer peripheral surface of the cylindrical rotor; and a flange portion provided at the outer peripheral surface of the cylindrical rotor, opposed to the gear with a predetermined clearance.
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