Portable computer and method of forming rear cover thereof

Abstract

A portable computer and a method of forming the rear cover includes a display part, a front cover having a display opening through which a display surface of the display part is exposed, and a rear cover formed by forming a forming material, coupled to the front cover, and having a reinforcement member embedded therein along a plate surface direction thereof. Thus, the rear cover of the display part is improved in strength.

1 . A portable computer having a display part, comprising: 
 a front cover having a display opening through which a display surface of the display part is exposed; and    a rear cover made of a forming material, coupled to the front cover, and having a reinforcement member embedded therein along a plate surface direction thereof.    
     
     
         2 . The portable computer according to  claim 1 , wherein the reinforcement member comprises a plurality of through-holes formed therein and arranged transversely on a plate surface thereof.  
     
     
         3 . The portable computer according to  claim 1 , wherein the reinforcement member comprises a magnetic substance.  
     
     
         4 . The portable computer according to  claim 1 , wherein the forming material comprises an acrylonitrile-butadiene-styrene resin.  
     
     
         5 . A rear cover forming method of a portable computer having a rear cover which is coupled to a front cover with a display opening, the rear cover forming method comprising: 
 preparing a reinforcement member to be embedded in the rear cover along a plate surface direction of the rear cover, and upper and lower molds to form the rear cover;    arranging the reinforcement member in the lower mold;    coupling the upper mold and the lower mold;    injecting a forming material into a space formed between the upper mold and the lower mold;    cooling the forming material; and    separating the upper mold from the lower mold.    
     
     
         6 . The rear cover forming method according to  claim 5 , further comprising: 
 preheating the reinforcement member to have a predetermined temperature before the arranging of the reinforcement member in the lower mold.    
     
     
         7 . The rear cover forming method according to  claim 5 , wherein the reinforcement member comprises a magnetic substance, and the lower mold includes a permanent magnet to secure the reinforcement member by a magnetic force with respect to the rear cover.  
     
     
         8 . The rear cover forming method according to  claim 5 , wherein the reinforcement member comprises a plurality of position determination holes formed therein at predetermined positions of the plate surface thereof, and the lower mold comprises position determination pins to settle the position of the reinforcement member corresponding to the position determination holes.  
     
     
         9 . The rear cover forming method according to  claim 8 , further comprising 
 removing the rear cover by ejector pins movably provided in the lower mold,    wherein the rear cover is removed as the position determination pins push the rear cover after the ejector pins push the rear cover.    
     
     
         10 . An image forming device usable with a portable computer, comprising: 
 a display part; and    a rear cover to cover the display part and including one or more reinforcement members provided therein.    
     
     
         11 . The portable computer according to  claim 10 , wherein the rear cover comprises a forming material.  
     
     
         12 . The portable computer according to  claim 10 , wherein the reinforcement members have one or more position determining holes formed therein at predetermined intervals.  
     
     
         13 . The portable computer according to  claim 10 , wherein the reinforcement members have through holes formed therein.  
     
     
         14 . A molding apparatus to form a rear cover of an image forming device of a portable computer, the molding apparatus comprising: 
 an upper mold;    a lower mold to contact the upper mold to form a space therebetween to form the rear cover;    a position determining core provided in the lower mold to position a reinforcing member within the space; and    a nozzle to inject a forming material into the space to form a rear cover having a reinforcing member.    
     
     
         15 . The molding apparatus according to  claim 14 , wherein the position determining core comprises permanent magnets corresponding to the reinforcing members to secure a position of the reinforcing members during a molding operation.  
     
     
         16 . The molding apparatus according to  claim 15 , wherein the position determining core comprises permanent magnet accommodating parts to accommodate the permanent magenets therein.  
     
     
         17 . The molding apparatus according to  claim 15 , wherein the permanent magnets are provided at a predetermined portion of the lower mold to arrange the reinforcing members with respect to the rear cover.  
     
     
         18 . The molding apparatus according to  claim 14 , wherein the position determining core comprises position determining pins provided therein to protrude from the a lower surface of the lower mold to be received in the corresponding reinforcing member to properly locate the corresponding reinforcing members.  
     
     
         19 . The molding apparatus according to  claim 14 , wherein the reinforcing member comprises one or more holes, and the lower mold comprises ejector pins to protrude from a lower surface of the lower mold to be inserted into corresponding ones of the one or more holes to eject the rear cover from the lower mold.  
     
     
         20 . The molding apparatus according to  claim 14 , wherein the upper mold comprises ejector pins to protrude from a lower surface of the lower mold to eject the rear cover from the upper mold.  
     
     
         21 . The molding apparatus according to  claim 20 , wherein the ejector pins correspond to portions of the rear cover having the corresponding reinforcing member provided therein to remove the rear cover after a molding operation.  
     
     
         22 . The molding apparatus according to  claim 14 , wherein: 
 the upper mold comprises: 
 an upper runner, and  
   the lower mold comprises: 
 a lower runner to provide the forming material to provide the forming material to the rear cover forming area.  
   
     
     
         23 . The molding apparatus according to  claim 14 , wherein the forming material nozzle part comprises a screw to move the forming material.  
     
     
         24 . The molding apparatus according to  claim 14 , wherein: 
 the lower mold comprises cooling channels to cool the molding apparatus; and    the upper mold comprises cooling channels to cool the molding apparatus.