Abduction-type motor and fabrication method of motor stator thereof

Abstract

In an abduction-type motor having a divided core 5 (a-l) formed by dividing a stator core into plural blocks and a motor stator having such a structure as the divided core may be reassembled, the motor has a coil winding frame 6 continuously formed a continuous unit of coupling parts, a part of which is flexible and made of insulation material, embedded into the individual divided cores, and a coil 7 arranged and wound by supporting the divided core so that the teeth top parts of the divided core may be directed inside and located on a circle, in which its coil winding structure has the number of coil stages at the teeth top part (external peripheral part) of the divided core larger than the number of the coil stages at the internal peripheral part, and the diameter of the teeth top part of the divided core after assembly is identical to the diameter of the teeth top part while coil winding work, and the length of the crossover line 7 s between the coil windings is made enough to be equivalent to a single slot or more, not excessive or not insufficient.

1 . A method of assembling a stator of an abduction-type motor having a divided core formed by dividing a stator core into plural blocks with its teeth top parts arranged in a direction to outside and structured as being reassembled with said divided cores, said method comprising; 
 forming a coil winding frame as a series of units, each unit coupled at coupling parts made of insulation material and embedded into said individual divided core, a part of which can be flexibly bended;    embedding said coil winding frame into each of said divided cores;    performing coil winding whereby coupling parts of said coil winding frame are deformed and arranged during said coil winding so that teeth top parts of said divided core are arranged in a circular arrangement and directed inward; and    continuously performing coil winding on said divided cores, wherein coupling parts of said coil winding frame are deformed after completion of said coil winding so that teeth parts of said divided core are directed outward.    
   
   
       2 . The assembling method of a stator of an abduction-type motor of  claim 1 , wherein said coil winding frame formed as a series of units, each coupled at coupling parts made of insulation material, a part of which can be flexibly bended, is divided into two parts in an axial direction and each of said units is embedded into said divided core.  
   
   
       3 . The assembling method of a stator of an abduction-type motor of  claim 1 , wherein said coil winding frame formed as a series of units, each coupled at coupling parts made of insulation material, a part of which can be flexibly bended, is integrally formed with said divided core by insert molding.  
   
   
       4 . The assembling method of a stator of an abduction-type motor of  claim 1 , wherein teeth parts of said divided cores are so assembled and fixed so as to be directed outward and located on a circle so that coupling parts of said coil winding frame, a part of which can be flexibly bended and made of insulation material are located in a circular arrangement.  
   
   
       5 . The assembling method of a stator of an abduction-type motor of  claim 1 , wherein coupling parts of said coil winding frame, a part of which can be flexibly bent and made of insulation material, are placed at a position shifted from a center of said divided core and closer to teeth top parts.  
   
   
       6 . The assembling method of a stator of an abduction-type motor of  claim 1 , wherein said divided cores are arranged so that teeth top parts of said divided cores are directed inward, and a continuous coil winding work is applied for an individual phase by using a stator core coil winding apparatus.  
   
   
       7 . An abduction motor comprising divided cores, coil winding frames embedded into the teeth parts of said divided cores, and a coil winding wound around said coil winding frames, 
 wherein said coil winding frames are coupled by a coupling part able to be bent, and    wherein lead lines for the start of a coil winding and the end of the coil winding are arranged at a top portion of said teeth parts.