Blade assembly and air conditioner having the same

Abstract

An air conditioner includes a housing forming an external appearance of the air conditioner and provided with an air discharge port forming an air discharge flow path allowing air inside of the housing to be discharged therethrough, a blade arranged at the air discharge port to control a flow direction of the air discharged from the air discharge port, and a blade reinforcement support arranged on the blade to prevent bending of the blade, wherein the blade reinforcement support includes a blade support having a support protrusion provided with a shaft hole parallel with the blade, and a seating portion comprising a seating protrusion inserted into the shaft hole to allow rotation of the support protrusion, and a seating guide to surround an outer circumferential surface of the support protrusion. Thereby, the blade may have an enhanced fastening strength and be stably supported.

What is claimed is: 
     
         1 . An air conditioner comprising:
 a housing forming an external appearance of the air conditioner and provided with an air discharge port forming an air discharge flow path allowing air inside of the housing to be discharged therethrough;   a blade arranged at the air discharge port to control a flow direction of the air discharged from the air discharge port; and   a blade reinforcement support arranged on the blade,   wherein the blade reinforcement support comprises:   a blade support having a support protrusion provided with a shaft hole parallel with the blade; and   a seating portion comprising a seating protrusion inserted into the shaft hole to allow rotation of the support protrusion, and a seating guide to surround an outer circumferential surface of the support protrusion.   
     
     
         2 . The air conditioner according to  claim 1 , wherein the blade comprises:
 a blade end provided with a rotating shaft to rotate; and   a blade lateral surface portion to control flow of air discharged from the blade end,   wherein the blade reinforcement support is arranged at the blade lateral surface portion.   
     
     
         3 . The air conditioner according to  claim 1 , wherein the blade support comprises a support arm extending from an outer surface of the support protrusion and connected to the blade. 
     
     
         4 . The air conditioner according to  claim 3 , wherein the support arm is formed to extend from the outer surface of the support protrusion and to be perpendicular to the shaft hole. 
     
     
         5 . The air conditioner according to  claim 1 , wherein the support protrusion extends in an axial direction to have a first length such that an inner circumferential surface of the support protrusion is supported by the seating protrusion and the outer circumferential surface of the support protrusion is supported by the seating guide. 
     
     
         6 . The air conditioner according to  claim 1 , wherein the seating protrusion is formed in a shape of a rod having a circular cross section, and is arranged through the shaft hole to protrude from an end of the support protrusion. 
     
     
         7 . The air conditioner according to  claim 1 , wherein the seating protrusion is formed in a shape of a rod having a circular cross section, and an end of the seating protrusion is disposed in the shaft hole. 
     
     
         8 . The air conditioner according to  claim 1 , wherein the seating portion comprises a hinge member coupled to the air discharge port to support the seating protrusion and the seating guide. 
     
     
         9 . The air conditioner according to  claim 1 , wherein the support protrusion, the seating protrusion and the seating guide are concentrically formed. 
     
     
         10 . The air conditioner according to  claim 1 , wherein a width of the support arm increases as the support arm extends from the support protrusion to the blade. 
     
     
         11 . The air conditioner according to  claim 1 , wherein the seating portion comprises a stopper protruding from an end of the seating guide to limit rotation of the blade support. 
     
     
         12 . An air conditioner comprising:
 a housing forming an external appearance of the air conditioner and provided with an air discharge port forming an air discharge flow path allowing air inside of the housing to be discharged therethrough;   a blade arranged at the air discharge port to control a flow direction of the air discharged from the air discharge port;   a seating portion comprising a seating protrusion arranged to be parallel with the blade, and a seating guide concentrically spaced apart from the seating protrusion to form a first space with an annular shape between the seating guide and the seating protrusion, the seating portion being arranged at the air discharge port to support the blade; and   a blade support extending from the blade such that at least one portion thereof is inserted into the first space to support rotation of the blade.   
     
     
         13 . The air conditioner according to  claim 12 , wherein the blade support comprises:
 a support protrusion provided with a shaft hole to be seated in the first space; and   a support arm extending from an outer surface of the support protrusion and connected to the blade.   
     
     
         14 . The air conditioner according to  claim 12 , wherein the support protrusion extends in an axial direction to have a first length such that an inner circumferential surface of the support protrusion is supported by the seating protrusion and the outer circumferential surface of the support protrusion is supported by the seating guide. 
     
     
         15 . The air conditioner according to  claim 12 , wherein the support arm is arranged to be perpendicular to an axial direction of the support protrusion. 
     
     
         16 . The air conditioner according to  claim 12 , wherein the seating portion comprises a hinge member arranged at the air discharge port and adapted to support the seating protrusion and the seating guide. 
     
     
         17 . The air conditioner according to  claim 12 , wherein the support protrusion, the seating protrusion and the seating guide are concentrically formed. 
     
     
         18 . A blade assembly including an air discharge port forming an air discharge flow path comprising:
 a blade to control a flow direction of air discharged from the air discharge port; and   a blade reinforcement support to support the blade at the air discharge port to prevent bending of the blade,   wherein the blade reinforcement support comprises:   a support arm provided at one end of the blade reinforcement support to be supported against the blade;   a hinge member provided at the other end of the blade reinforcement support to be supported against the air discharge port;   a support protrusion arranged at the support arm to form a center of rotation of the blade and provided with a shaft hole parallel with the blade;   a seating protrusion arranged on the hinge member and protruding to penetrate the shaft hole to allow rotation of the support protrusion; and   a seating guide concentrically spaced apart from the seating protrusion to form a first space with an annular shape between the seating guide and the seating protrusion.   
     
     
         19 . The blade assembly according to  claim 18 , wherein the support protrusion extends in an axial direction to have a first length such that an inner circumferential surface of the support protrusion is supported by the seating protrusion and the outer circumferential surface of the support protrusion is supported by the seating guide. 
     
     
         20 . The blade assembly according to  claim 18 , wherein the support protrusion, the seating protrusion and the seating guide are concentrically formed. 
     
     
         21 . The blade assembly according to  claim 18 , further comprising a reinforcement protrusion protruding from a lateral surface of each of the support arm and the hinge member and extending from the support protrusion to the blade and from the seating guide to the air discharge port. 
     
     
         22 . A blade assembly including an air discharge port forming an air discharge flow path comprising:
 a blade to control a flow direction of air discharged from the air discharge port; and   a blade reinforcement support to support the blade at the air discharge port to prevent bending of the blade,   wherein the blade reinforcement support comprises:
 a blade support; and 
 a seating portion rotatably connected to the blade support; 
   
     
     
         23 . The blade assembly according to  claim 22 , wherein:
 the blade support comprises:
 a support arm provided at one end of the blade reinforcement support to be supported against the blade; and 
 a support protrusion arranged at the support arm to form a center of rotation of the blade and provided with a shaft hole parallel with the blade; and 
   the seating portion comprises:
 a hinge member provided at the other end of the blade reinforcement support to be supported against the air discharge port; 
 a seating protrusion arranged on the hinge member and protruding to penetrate the shaft hole to allow rotation of the support protrusion; and 
 a seating guide concentrically spaced apart from the seating protrusion to form a first space with an annular shape between the seating guide and the seating protrusion. 
   
     
     
         24 . The blade assembly according to  claim 23 , wherein the support protrusion extends in an axial direction to have a first length such that an inner circumferential surface of the support protrusion is supported by the seating protrusion and the outer circumferential surface of the support protrusion is supported by the seating guide. 
     
     
         25 . The blade assembly according to  claim 23 , wherein the support protrusion, the seating protrusion and the seating guide are concentrically formed. 
     
     
         26 . The blade assembly according to  claim 23 , further comprising a reinforcement protrusion protruding from a lateral surface of each of the support arm and the hinge member and extending from the support protrusion to the blade and from the seating guide to the air discharge port.