Title:
DEVICE FOR MOUNTING MOTOR COIL OF ELECTRIC WRIST WATCH
Document Type and Number:
Japanese Patent JPS55160883
Kind Code:
A
Abstract:
A system for fastening the coil of a step-by-step motor in an electric or an electronic watch. It is characterized by the fact that one or both pole pieces 4 and 4' of the coil 2 have extrusions 10 and 11 of cylindrical shape which extend perpendicular to the plane of the pole piece 4 and are intended to be introduced into corresponding boreholes in the substrate of the printed circuit 1. This arrangement is advantageous since the extrusions can be produced by stamping before the heat treatment of the pole pieces, which eliminates the stresses which might, upon the mounting of the coil, destroy the magnetic qualities of the materials.
Inventors:
DANIERU YUOOMARUSHIYAN
FUERUNAN ZANJIYUAKOMI
FUERUNAN ZANJIYUAKOMI
Application Number:
JP2971180A
Publication Date:
December 15, 1980
Filing Date:
March 07, 1980
Export Citation:
Assignee:
EBAUCHES SA
International Classes:
G04B29/04; G04C3/14; H02K1/18; H02K37/16; (IPC1-7): G04C3/14; H02K1/00; H02K37/00