Laundry treating apparatus

Abstract

Provided is a laundry treating apparatus comprising a drum including: a drum body defining a space to store laundry therein, a front cover, a rear cover, and a drum introduction opening defined at the front cover and configured to communicate with an inside of the drum body; a drying unit configured to supply heated air to the drum body; a fixing panel; a power transmission unit including: a housing, an input shaft, an output shaft, and a gear unit disposed in the housing and configured to transmit rotational motion of the input shaft to the output shaft; a motor comprising including: a stator, and a rotor; and a heat insulation part made of a material having heat conductivity lower than heat conductivity of the housing and configured to reduce an amount of heat that is transferred from the outside of the housing to an inside of the housing.

What is claimed is: 
     
         1 . A laundry treating apparatus comprising:
 a drum defining a space to receive laundry therein;   a drying unit configured to supply heated air to the drum;   a fixing panel disposed at a position spaced apart from a rear surface of the drum;   a power transmission unit including:
 a housing coupled to the fixing panel, 
 an input shaft having one end disposed at an outside of the housing and an opposite end disposed in the housing, 
 an output shaft having one end coupled to the rear surface of the drum and an opposite end disposed in the housing, and 
 a gear unit disposed inside the housing and configured to transmit rotational motion of the input shaft to the output shaft; 
   a motor comprising a stator configured to form a rotating magnetic field, and a rotor configured to be rotated by the rotating magnetic field and to allow the one end of the input shaft to be coupled thereto;   a housing coupling part configured to fasten the housing to the fixing panel; and   a mounting portion configured to fasten the stator to the housing.   
     
     
         2 . The laundry treating apparatus of  claim 1 , wherein the housing comprises:
 a housing body having an opening disposed at a surface thereof that faces the fixing panel;   an accommodation space provided in the housing body to provide a space for mounting the gear unit and communicating with an outside of the housing body through the opening; and   a housing cover coupled to the housing body and configured to close the opening.   
     
     
         3 . The laundry treating apparatus of  claim 2 , wherein the housing coupling part is configured to fasten an edge of the housing cover to the fixing panel. 
     
     
         4 . The laundry treating apparatus of  claim 3 , further comprising a bracket mounted on a surface of the fixing panel that faces the rear surface of the drum to provide a space for the housing coupling part to be coupled. 
     
     
         5 . The laundry treating apparatus of  claim 2 , wherein the mounting portion is configured to fasten the stator to an edge of the housing cover. 
     
     
         6 . The laundry treating apparatus of  claim 5 , wherein the stator comprises:
 a core having a through-hole defined at the center thereof;   a plurality of support bars which protrude radially from an outer circumferential surface of the core;   a core insulation part configured to insulate the core and having an insulation part through-hole at the center thereof;   a plurality of support bar insulation parts which are disposed at the core insulation part to surround the support bars;   coils which are disposed at the support bar insulation parts; and   a stator bracket which protrudes from an inner circumferential surface of the core insulation part toward the center of the insulation part through-hole and configured to be coupled to the mounting portion.   
     
     
         7 . The laundry treating apparatus of  claim 6 , wherein the mounting portion is provided in plural, and the mounting portions are disposed at a circumferential surface of the housing cover. 
     
     
         8 . The laundry treating apparatus of  claim 7 , further comprises a stator position setting unit configured to facilitate coupling of the stator brackets and the mounting portions. 
     
     
         9 . The laundry treating apparatus of  claim 2 , wherein the housing cover comprises:
 a cover body configured to close the opening;   an output shaft through-hole defined at the cover body and configured to allow the output shaft to be inserted thereinto; and   an output shaft support portion protruding from the cover body toward the fixing panel and surrounding the output shaft through-hole.   
     
     
         10 . The laundry treating apparatus of  claim 9 , further comprising:
 a first output shaft bearing and a second output shaft bearing which are disposed at the output shaft support portion and configured to rotatably couple the output shaft to the output shaft through-hole.   
     
     
         11 . The laundry treating apparatus of  claim 10 , further comprising:
 a seal coupled to the output shaft support portion and configured to restrict introduction of external substances into the output shaft through-hole.   
     
     
         12 . The laundry treating apparatus of  claim 10 , further comprises an output bearing stopper that is disposed in the output shaft through-hole to be located between the first output shaft bearing and the second output shaft bearing. 
     
     
         13 . The laundry treating apparatus of  claim 2 , wherein the housing body comprises:
 an input shaft through-hole defined at the housing body and configured to communicate with the accommodation space, and   an input shaft support portion configured to surround the input shaft through-hole and extend from the housing body toward the rotor.   
     
     
         14 . The laundry treating apparatus of  claim 13 , further comprising:
 a first input shaft bearing and a second input shaft bearing which are disposed at the input shaft support portion and configured to rotatably couple the input shaft to the input shaft through-hole.   
     
     
         15 . The laundry treating apparatus of  claim 14 , further comprising an input bearing stopper that is disposed in the input shaft through-hole to be located between the first input shaft bearing and the second input shaft bearing.