Invention Grant
- Patent Title: Stepping motor and timepiece
-
Application No.: US14486639Application Date: 2014-09-15
-
Publication No.: US09709958B2Publication Date: 2017-07-18
- Inventor: Yuta Saito , Hiroyuki Hosobuchi , Junro Yano
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Holtz, Holtz & Volek PC
- Priority: JP2013-201949 20130927
- Main IPC: H02K37/00
- IPC: H02K37/00 ; G04C3/14 ; H02K21/18 ; H02K37/16 ; H02K37/14 ; H02K3/04

Abstract:
Disclosed is a stepping motor including a rotor, a stator which includes a rotor accommodating hole, a pair of outer notches to determine positions of saturated magnetic fluxes and inner notches disposed on an inner periphery of the stator around the rotor accommodating hole, the inner notches determining stably stationary positions of the rotor, and a coil block configured by a coil wound around a coil core which is magnetically coupled to the stator, and the outer notches are disposed on an outer periphery of the stator on opposite sides of the rotor accommodating hole. And a line that connects narrowest portions between the outer notches and the rotor accommodating hole and extends through a center of the rotor accommodating hole shifts by a predetermined angle from a line that extends through the center of the rotor accommodating hole and is orthogonal to an extending direction of the stator.
Public/Granted literature
- US20150092522A1 STEPPING MOTOR AND TIMEPIECE Public/Granted day:2015-04-02
Information query