Surface structure for the connection between blocks equipped with magnet of block toys

Abstract

Disclosed herein is a block toy that has a magnet embedded inside and a surface structure for connecting a block thereof, wherein overhang-like structures and hollow-like structures are formed on the block surface of the block toy that has a magnet embedded inside so that the overhang-like structures on each block surface interlock organically with the hollow-like structures on each block surface in order to secure stable assembly between the blocks of a block toy when the blocks are stacked up or interlocking at right angles or laterally to each other, thereby, especially, preventing the block thus interlocked from slipping out of the assembly with the external force that is exerted in a direction other than the direction the block interlocks in when it is stacked up or interlocking at right angles or laterally with each other.

What is claimed is: 
     
         1 . A surface structure for the connection between blocks equipped with a magnet of block toys comprising a block of a block toy as a single assembly, into which a top frame and a bottom frame are integrated, that assumes the shape of a quadrate panel with an opening at the center and has, inside and at the center of each of the four sides of the top frame and the bottom frame, a magnet holder with an internal space for magnet rotation into which a single cylindrical magnet or two cylindrical magnets in tandem are placed in the longitudinal direction of the edge of the top frame and the bottom frame, respectively,
 wherein a lateral protuberance and a fitting slot are alternately arranged with a certain distance in between on a top plane of the top frame and a bottom plane of the bottom frame in the longitudinal direction of the edge of the top plane and the bottom plane so that, when another block is laid down on the top plane of the top frame of the block, the lateral protuberance of the top plane of the top frame of the underlying block is plugged into the fitting slot of the bottom plane of the bottom frame of the overlying block while the fitting slot of the top frame of the underlying block is plugged with the lateral protuberance of the bottom plane of the bottom frame of the overlying block;   a top inclined plane is extended from the edge of the top frame at 45° downward while a top vertical plane drops from the top inclined plane;   a bottom inclined plane is extended from the edge of the bottom frame at 45° upward while a bottom vertical plane rises from the bottom inclined plane;   three—top, middle and bottom—steps of a tongue are formed on the left of a spot slightly to the left of the center of the top inclined plane with a certain distance from the spot while three—top, middle and bottom—steps of a groove that is slightly longer than the tongue are formed on the right side to a level slightly lower than that of the tongue;   three—top, middle and bottom—steps of a groove are formed on the left of a spot slightly to the right of the center of the bottom inclined plane with a certain distance from the spot while three—top, middle and bottom—steps of a tongue that is slightly shorter than the groove are formed on the right side to a level slightly higher than that of the groove;   a tongue is formed on the left of a spot slightly to the left of the center of the top vertical plane while a groove that is slightly longer than the tongue is formed on the right side to a level slightly lower than that of the tongue, and a groove is formed on the left of a spot slightly to the right of the center of the bottom vertical plane while a tongue that is slightly shorter than the groove is formed on the right side to a level slightly higher than that of the tongue; and   a top bump is formed in the right middle of the right groove of the top inclined plane and the right groove of the top vertical plane at right angles to the grooves to a level higher than that of the tongues while a top depression is formed in the right middle of the left tongue of the top inclined plane and the left tongue of the top vertical plane at right angles to the tongues and a bottom bump is formed in the right middle of the left groove of the bottom inclined plane and the left groove of the bottom vertical plane at right angles to the grooves to a level higher than that of the tongues while a bottom depression is formed in the right middle of the right tongue of the bottom inclined plane and the right tongue of the bottom vertical plane at right angles to the tongues.   
     
     
         2 . The surface structure for the connection between blocks equipped with a magnet of block toys of  claim 1 , wherein the block into which the top frame and the bottom frame are integrated has a width and height of 60 to 70 mm and a thickness of 6 to 9 mm. 
     
     
         3 . The surface structure for the connection between blocks equipped with a magnet of block toys of  claim 1 , wherein the lateral protuberance and the fitting slot has an identical depth of 0.8 to 1.0 mm. 
     
     
         4 . The surface structure for the connection between blocks equipped with a magnet of block toys of  claim 1 , wherein the grooves on the top and bottom inclined planes have a depth of, and the tongues formed thereon have a height of 0.25 to 0.35 mm. 
     
     
         5 . The surface structure for the connection between blocks equipped with a magnet of block toys of  claim 1 , wherein the grooves on the top and bottom vertical planes have a depth of, and the tongues formed thereon have a height of 0.4 to 0.6 mm. 
     
     
         6 . The surface structure for the connection between blocks equipped with a magnet of block toys of  claim 1 , wherein the bumps and the depressions have a height and depth, respectively, of 0.8 to 1.0 mm.