Lead screw type stepping motor
AssigneeKeihin Corporation
InventorYasushi Kondo
Life of this patent
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Abstract
To provides a lead screw type stepping motor which is excellent in a response and controllability and can carry out an accurate initial alignment, a rotor (2) is rotatably supported inside of a stator (1) around which an exciting coil (1A) is wound, a female threaded hole (2A) is provided in the center of the rotor (2), a slider (6) is arranged to be engaged with the female threaded hole (2A), a slit groove (6C) shaped in an oblong hole is pierced through in the slider (6), which is movably arranged in a guide hole (3B) of a case (3), a guide pin (7) is arranged to be inserted into the slit groove (6C), and both ends of the guide pin (7) are press inserted and fixed to a bearing portion (3A) in which the guide hole (3B) is provided.
Claims1
A lead screw type stepping motor structured such that a rotor is rotatably supported inside a stator around which an exciting coil is wound, a slider is arranged to be screwed with a female threaded hole provided through in the longitudinal direction of said rotor, and a rotation of the rotor is converted into a linear movement of the slider to be output, wherein a slit groove (6C) shaped in an oblong hole along the axial direction is pierced through in said slider, the slider (6) is supported to a guide hole (3B) provided in a bearing portion (3A) of a case (3) receiving the stator (1) in such a manner as to freely move in the axial direction, a guide pin (7) is arranged to be inserted into the slit groove, and both ends of the guide pin (7) are press inserted and supported to the bearing portion.
Dependencies are inferred from the claim text.