Electronic device and fan

Abstract

According to one embodiment, a fan includes a fan case comprising a first wall in which a first air inlet is formed, a second wall facing the first wall in which a second air inlet is formed, and a side wall which connects the first wall to the second wall and in which an air outlet is formed; a rotor comprising a shaft, an impeller fixed to the shaft, and an abutment portion, and contained in the fan case between the first and second walls and configured to rotate about the shaft; a bearing in the second wall and configured to support the shaft; and a prevention portion that disposed in the fan case and that the abutment portion can contact or separate from and that is configured to prevent the rotor from moving in a direction away from the bearing when the abutment portion contacts the prevention portion.

1 . An electronic device comprising:
 a housing comprising a first opening and a second opening;   a display device in the housing, the display device comprising a display screen exposed through the first opening;   a fan case in the housing, the fan case comprising a first wall comprising a first air inlet, a second wall facing the first wall and comprising a second air inlet, and a side wall connecting the first wall to the second wall and comprising an air outlet from which air supplied to the second opening is discharged;   a rotor in the fan case between the first wall and the second wall and configured to rotate about an axis of a column member, the rotor comprising the column member, an impeller fixed to the column member, and an abutment portion;   an opening in the second wall and in which at least a portion of the column member is disposed; and   a prevention portion in the fan case and configured to contact or separate from the abutment portion, the prevention portion configured to prevent the column member from moving in a direction away from the opening when the abutment portion contacts the prevention portion.   
     
     
         2 . The electronic device of  claim 1 , wherein the fan case is configured so that at least a portion of the fan case overlaps the display device. 
     
     
         3 . The electronic device of  claim 2 , wherein the prevention portion is configured on an inner surface of the housing that covers a side opposite to the display screen of the display device and is configured to prevent the rotor from moving in a direction opposite to the display device. 
     
     
         4 . A fan comprising:
 a fan case comprising a first wall comprising a first air inlet, a second wall facing the first wall and comprising a second air inlet, and a side wall connecting the first wall to the second wall and comprising an air outlet;   a rotor in the fan case between the first wall and the second wall and configured to rotate about a shaft, the rotor comprising the shaft, an impeller fixed to the shaft, and an abutment portion;   a bearing in the second wall and configured to support the shaft; and   a prevention portion in the fan case and configured to contact or separate from the abutment portion, the prevention portion configured to prevent the rotor from moving in a direction away from the bearing when the abutment portion contacts the prevention portion.   
     
     
         5 . The fan of  claim 4 , wherein
 the impeller comprises a base and a plurality of blades extending from a periphery of the base,   the base is fixed to one end of the shaft,   the abutment portion is disposed in the base, and   the prevention portion is disposed in the first wall.   
     
     
         6 . The fan of  claim 4 , wherein the prevention portion comprises a projection configured to contact the abutment portion and a support portion, the support portion is disposed on the outer surface of the first wall and fixed to the projection. 
     
     
         7 . The fan of  claim 4 , wherein the prevention portion is inside the fan case. 
     
     
         8 . The fan of  claim 4 , wherein
 the abutment portion is on the shaft and configured to protrude from a periphery of the shaft, and   the prevention portion is on the second wall.   
     
     
         9 . An electronic device comprising:
 a fan comprising a fan case, a rotor, and a support member, the support member configured to contain at least a portion of the rotor and rotatably support the rotor; and   a prevention portion on an outside of the support member and configured to prevent the rotor from separating from the support member when the prevention portion contacts the rotor.