Switched reluctance motor assembly

Abstract

Disclosed herein is a switched reluctance motor assembly capable of reducing an assembling error that is generated according to separate assembling and improving precision of assembling of bearing parts by forming a diffuser part and a motor housing integrally with each other. In the switched reluctance motor assembly, the diffuser is coupled integrally with the housing, such that a separate member for fixing the diffuser is omitted, thereby making it possible to reduce vibration according to driving of a motor and noise according to the vibration.

What is claimed is: 
     
         1 . A switched reluctance motor assembly comprising:
 a shaft forming the center of rotation of a motor;   a rotor part rotatably coupled to the shaft;   a first stopper coupled to an upper portion of the rotor part in an axial direction to support the rotor part;   a second stopper coupled to a lower portion of the rotor part in the axial direction to support the rotor part;   a first bearing part coupled to an upper portion of the first stopper in the axial direction;   a second bearing part coupled to a lower portion of the second stopper in the axial direction;   a diffuser part supporting the first bearing part and coupled to an upper end of the first stopper; and   a motor housing formed integrally with the diffuser part and receiving the first and second bearing parts therein.   
     
     
         2 . The switched reluctance motor assembly as set forth in  claim 1 , wherein the rotor part includes an annular rotor core and a plurality of rotor poles protruded outwardly from the rotor core. 
     
     
         3 . The switched reluctance motor assembly as set forth in  claim 1 , wherein the first stopper is formed as a balancing member for maintaining rotation balance of a switched reluctance motor. 
     
     
         4 . The switched reluctance motor assembly as set forth in  claim 1 , further comprising a stator part including a stator yoke receiving the rotor part therein and stator salient poles formed to be spaced apart from the rotor poles so as to correspond to the rotor poles and formed to be protruded inwardly of the stator yoke. 
     
     
         5 . The switched reluctance motor assembly as set forth in  claim 1 , further comprising an impeller part coupled to an upper portion of the diffuser part in the axial direction and rotatably coupled to the shaft. 
     
     
         6 . The switched reluctance motor assembly as set forth in  claim 1 , wherein the diffuser part includes at least one connecting member coupled integrally with the motor housing. 
     
     
         7 . The switched reluctance motor assembly as set forth in  claim 6 , wherein the connecting member is formed along an outer circumference of the diffuser part and is protruded from an outer circumferential surface of the diffuser part to thereby be coupled integrally with the motor housing. 
     
     
         8 . The switched reluctance motor assembly as set forth in  claim 1 , further comprising:
 a sensing magnet formed at a lower portion of the second bearing part in the axial direction and corresponding to the rotor part; and   a printed circuit board disposed at a lower portion of the sensing magnet in the axial direction and having a hall sensor attached thereto so as to face the sensing magnet.