Flap cover for roll storage case and roll storage apparatus

Abstract

An object of the present invention is to allow a flap of a roll storage case to be easily opened and closed by means of a flap cover and to prevent the flap cover from slipping off from the flap of the roll storage case even when the flap is opened and closed many times. A flap cover includes an upper plate covering an upper surface portion of a flap, a front plate covering a front surface portion of the flap, and a pair of side plates covering opposite side surface portions of the flap. Each of the side plates includes a locking portion which projects inward from the side plate and which is able to be locked on a lower end surface of the side surface portion of the flap.

1 . A flap cover for a roll storage case storing a roll around which film is wound, the flap cover being removably installed on a flap of the roll storage case, the flap cover comprising:
 an upper plate covering an upper surface portion of the flap;   a front plate covering a front surface portion of the flap; and   a pair of side plates covering opposite side surface portions of the flap,   wherein each of the side plates is provided with a locking portion which projects inward from the side plate and which is able to be locked on a lower end surface of the side surface portion of the flap.   
     
     
         2 . The flap cover for a roll storage case according to  claim 1 , wherein the front plate comprises a projecting portion projecting forward and extending in a lateral direction. 
     
     
         3 . The flap cover for a roll storage case according to  claim 2 , wherein the projecting portion is recessed in a center thereof. 
     
     
         4 . The flap cover for a roll storage case according to  claim 1 , wherein the locking portion comprises a horizontal upper surface formed along a front-back direction of the side plate. 
     
     
         5 . The flap cover for a roll storage case according to  claim 1 , wherein the front plate comprises a cutting edge formed on a lower end portion of the front plate to cut film. 
     
     
         6 . The flap cover for a roll storage case according to  claim 5 , wherein the cutting edge is formed on a part of the lower end portion of the front plate. 
     
     
         7 . The flap cover for a roll storage case according to  claim 5 , wherein the cutting edge is formed by forming recesses and protrusions on a back surface of the lower end portion of the front plate. 
     
     
         8 . The flap cover for a roll storage case according to  claim 1 , wherein the front plate comprises an edge cover covering the cutting edge of the flap. 
     
     
         9 . The flap cover for a roll storage case according to  claim 1 , wherein each of the side plates extends downward from the locking portion. 
     
     
         10 . The flap cover for a roll storage case according to  claim 9 , wherein each of the side plates extends downward from a bottom surface of the roll storage case. 
     
     
         11 . The flap cover for a roll storage case according to  claim 1 , wherein the front plate has a replaceable structure. 
     
     
         12 . A roll storage apparatus comprising:
 a roll storage case; and   the flap cover for the roll storage case according to any of  claims 1  to  11  which is able to be attached to the roll storage case.