Motor adopting improved mechanism

Abstract

A motor adopting an improved mechanism is composed of a stator having a shaft and a rotor provided with a sleeve and a hub, wherein the shaft is inserted into the hub and the hub is fixed on an outer circumferential surface of the sleeve. The outer circumferential surface of the sleeve is provided with a first outer circumferential surface, a second outer circumferential surface and a receiving surface that links between the first and second outer circumferential surfaces. The hub is provided with a base section, a through hole and a first protruded section protruding downward from the base section. A tip end portion of the first protruded section is provided with a hitting surface that contacts with the receiving surface of the sleeve and a second protruded section that links to the contacting surface and protrudes downward from the contacting surface.

1 . A motor adopting an improved mechanism comprising:
 a stator having a shaft; and   a rotor provided with a sleeve into which the shaft is inserted and a hub fixed on an outer circumferential surface of the sleeve,   wherein the rotor rotates with centering an axis of the shaft, and   wherein the outer circumferential surface of the sleeve is provided with a first outer circumferential surface having a first diameter, a second outer circumferential surface having a second diameter that is larger than the first diameter, and a receiving surface that links between the first outer circumferential surface and the second outer circumferential surface and intersects with the shaft at right angles, and   wherein the hub is provided with a base section that extends in a direction intersecting with an axis of the shaft at right angles, a through hole that is formed in the center of the base section and engages with the outer circumferential surface of the sleeve, and a first protruded section that protrudes downward from the base section in the through hole side in parallel with the axis of the shaft, and   further wherein a tip end portion of the first protruded section is a surface intersecting with the axis of the shaft at right angles and provided with a hitting surface that contacts with the receiving surface of the sleeve and a second protruded section that links to the contacting surface and protrudes downward from the contacting surface in an opposite direction toward the base section.   
   
   
       2 . The motor adopting an improved mechanism as claimed in  claim 1 , wherein an inner circumferential surface of the second protruded section is separated from the second outer circumferential surface of the sleeve. 
   
   
       3 . The motor adopting an improved mechanism as claimed in  claim 1 , wherein a thickness of the second protruded section is thinner than that of the first protruded section. 
   
   
       4 . The motor adopting an improved mechanism as claimed in  claim 1 , wherein the hub is formed from a metal substance through a press working.