초록 ▼

In a method for making a motor, wherein a plurality of lamellar ring plates each having plural teeth extending outwardly from its inner ring portion are laminated, coils are wound on every tooth, and then inserted in a ring which are also made of a plurality of laminated lameller ring plates so as t

In a method for making a motor, wherein a plurality of lamellar ring plates each having plural teeth extending outwardly from its inner ring portion are laminated, coils are wound on every tooth, and then inserted in a ring which are also made of a plurality of laminated lameller ring plates so as to cover all openings between teeth and thereby a stator is formed. After that, the stator is molded with resin comprising mainly the mixture of thermoplastic resin and thermosetting resin. And then, a rotor is inserted into the stator after cutting off the inner ring portions of the stator to form the motor.

대표청구항 ▼

A method for making a stator structure for a motor, said method comprising the steps of: A. providing a stack of first ferromagnetically soft rings, each of said rings comprising an innerconnecting ring portion and a plurality of teeth portions extending outwardly from the respective interconnecting

A method for making a stator structure for a motor, said method comprising the steps of: A. providing a stack of first ferromagnetically soft rings, each of said rings comprising an innerconnecting ring portion and a plurality of teeth portions extending outwardly from the respective interconnecting ring portion; B. disposing a plurality of coils around said teeth portions; C. providing a stack of second ferromagnetically soft rings; D. inserting said stack of first rings with said coils disposed around said teeth portions into said stack of second rings; E. molding the combined stacks of first and second rings with a dimensionally stable resin mixture of thermosetting resin and thermoplastic resin to hold said first and second rings rigidly together to form a motor casing structure entirely enclosing said rings and said coils and comprising a recess coaxial with said rings and extending inwardly from one end of said casing structure to permit a rotor to be inserted therein, said casing structure comprising an integrally molded section at the other end thereof having a first concave portion formed therein coaxial with said recess to hold bearing means to provide a first accurately placed receptacle for supporting one end of the rotor; F. molding a bracket of said dimensionally stable resin mixture to attach to said one end of said casing structure to close said recess, said bracket being molded to have a second concave portion to provide a second accurately placed bearing receptacle for supporting the other end of the rotor; and G. assembling said bracket and said casing structure together such that said first and second concave portions are aligned to support said rotor.