Patent ID: 6564443
Filing Date: 2003-05-20
Classification: H01F,Y10T

Abstract:
A method for manufacturing an electromagnetic operating apparatus, said electromagnetic operating apparatus including:a moving core; an accommodating member for accommodating said moving core such that said moving core reciprocates therein; an attracting member disposed at one side of said accommodating member in a reciprocating direction of said moving core, said attracting member accommodating said moving core such that said moving core reciprocates therein, said attracting member forming a magnetic circuit with said moving core and said accommodating member; a coil provided outside said accommodating member and said attracting member, said coil generating a magnetic force attracting said moving core toward said attracting member when energized; and a bobbin made of resin and around which said coil is wound; the method for manufacturing said electromagnetic operating apparatus, comprising the steps of: resin-insert-molding an accommodating base material of said accommodating member and an attracting base material of said attracting member, which is independent from said accommodating member, for forming a bobbin base material of said bobbin; and processing the resin-insert-molded accommodating base material and attracting base material for forming said accommodating member and said attracting member to accommodate said moving core such that said moving core reciprocates therein, wherein said step of processing comprises changing a shape of said accommodating base material to define a shape of said accommodating member and changing a shape of said attracting base material to define a shape of said attracting member.