Drum washing machine

Abstract

The present invention provides a drum washing machine which can decrease an internal useless space so as to increase a washing capacity or decrease an installation space. The drum washing machine of the present invention includes a drum, which has a substantially bottomed cylindrical shape and has an opening on a front surface; a rotating shaft, attached to a back surface of the drum; and a bearing rotatably supporting the rotating shaft. The bearing is a multiple-row tapered roller bearing.

1 . A drum washing machine, comprising:
 a drum, which has a substantially bottomed cylindrical shape and has an opening on a front surface;   a rotating shaft attached to a back surface of the drum; and   a bearing rotatably supporting the rotating shaft,   wherein the bearing is a multiple-row tapered roller bearing.   
     
     
         2 . The drum washing machine according to  claim 1 , wherein
 the multiple-row tapered roller bearing includes two rows of tapered rollers which are spaced apart in an axial direction, and small diameter sides of the two rows of tapered rollers are opposed to each other.   
     
     
         3 . The drum washing machine according to  claim 2 , wherein
 an outer ring of the multiple-row tapered roller bearing is axially fixed to a bearing fixing member, and an inner ring of the multiple-row tapered roller bearing is axially fixed to the rotating shaft.   
     
     
         4 . The drum washing machine according to  claim 3 , wherein
 the outer ring of the multiple-row tapered roller bearing is composed of one member, and the inner ring is composed of two inner ring elements axially separated from each other.   
     
     
         5 . The drum washing machine according to  claim 1 , wherein
 the rotating shaft is inclined with respect to a horizontal plane such that the front surface of the drum is in a position higher than the back surface of the drum.   
     
     
         6 . The drum washing machine according to  claim 2 , wherein
 the rotating shaft is inclined with respect to a horizontal plane such that the front surface of the drum is in a position higher than the back surface of the drum.   
     
     
         7 . The drum washing machine according to  claim 3 , wherein
 the rotating shaft is inclined with respect to a horizontal plane such that the front surface of the drum is in a position higher than the back surface of the drum.   
     
     
         8 . The drum washing machine according to  claim 4 , wherein
 the rotating shaft is inclined with respect to a horizontal plane such that the front surface of the drum is in a position higher than the back surface of the drum.