Stepping motor and motorized valve using it
AssigneeFujikoki Corporation
InventorsTomonori SHIMURA, Tomoari OHUCHI
Life of this patent
Estimating the term…
Abstract
To provide a stepping motor which can precisely and reliably detect stopping of a rotor with respect to a stopper with a simple structure, i.e., positioning of a base point of the rotor, and provide a motorized valve using it. The stepping motor includes a stator 55 and a rotor 57 rotationally driven by the stator 55, and a detection rotor 47 detecting a rotation position of the rotor 57. The detection rotor 47 is rotatably disposed on a co-axial center L with the rotor 57 and rotationally driven via a rotation drive mechanism between the rotor 57 and the detection rotor 47. The rotation drive mechanism has a drive play having a predetermined length or angle in the rotation direction.
Claims9
A stepping motor comprising a stator and a rotor rotationally driven by the stator, further comprising;
- a detection rotor for detecting a rotation position of the rotor,
- wherein the detection rotor is rotatably disposed on co-axial center with the rotor, and rotationally driven by the rotor via a rotation drive mechanism between the rotor and the detection rotor, and
- wherein the rotation drive mechanism has a drive play having a predetermined length or angle in a rotation direction.
Dependencies are inferred from the claim text.