Magnetic blocks with improved magnetic properties and construction set thereof

Abstract

The present invention is a magnetic block with improved magnetic properties comprising a non-magnetic body with outer walls and an internal parallelepiped connected by links. Together, they form cells for placing magnets. The magnets are placed such that the distance between adjacent magnets is not greater than the thickness of magnets. Caps are mounted onto the body and thus form a finished block. The ratio of the area of the face of the rectangular magnet to the area of the corresponding face of the block ranges between 0.15 and 0.6. A construction set comprising a plurality of magnetic blocks is also disclosed, wherein the blocks are different colors. Such a design of the magnetic block and the 6 rectangular magnets allows for very high magnetic attraction properties with which one can build geometrically-complex shapes and high-precision objects.

What is claimed is: 
     
         1 . A magnetic block, comprising:
 a non-magnetic body frame comprising four outer walls and an internal parallelepiped connected to the outer walls of the body frame via links,   wherein inner faces of the outer walls of the body frame, outer faces of the internal parallelepiped, and the links form six cells for placing magnets along an inner periphery of the magnetic block,   rectangular magnets, the rectangular magnets being placed one in each of the six cells such that a distance between adjacent magnets, in a projection on the plane, is not greater than 1.3 times a thickness of each magnet, and   at least one cap, the at least one cap being mounted to the body frame,   wherein a ratio of the surface area of a face of each rectangular magnet to the surface area of a corresponding face of the magnetic block is between 0.15 and 0.60.   
     
     
         2 . The magnetic block of  claim 1 , wherein the distance between adjacent magnets, in a projection on the plane, is equal to or less than a thickness of each magnet. 
     
     
         3 . The magnetic block of  claim 1 , wherein the ratio is between 0.15 and 0.19. 
     
     
         4 . The magnetic block of  claim 1 , wherein the ratio is between 0.19 and 0.225. 
     
     
         5 . The magnetic block of  claim 1 , wherein each magnet is positioned adjacent a center of each corresponding face of the magnetic block. 
     
     
         6 . The magnetic block of  claim 1 , further comprising flat edges on outer walls of the magnetic block. 
     
     
         7 . The magnetic block of  claim 1 , further comprising internal ribs within the parallelepiped. 
     
     
         8 . The magnetic block of  claim 1 , wherein seams of an assembled magnetic block are invisible. 
     
     
         9 . The magnetic block of  claim 1 , wherein the magnets are NdFeB magnets. 
     
     
         10 . The magnetic block of  claim 1 , wherein each cap comprises one or more pillars on its inner side, said pillars further fixing each cap to the body frame. 
     
     
         11 . The magnetic block of  claim 1 , further comprising snap joints on each sidewall of the links. 
     
     
         12 . The magnetic block of  claim 1 , further comprising vertical stiffening ribs positioned along the outer faces of the parallelepiped. 
     
     
         13 . The magnetic block of  claim 1 , further comprising a triangular concentrator for ultrasonic welding. 
     
     
         14 . The magnetic block of  claim 1 , wherein three adjacent faces have a northern polarity and three adjacent faces have a southern polarity. 
     
     
         15 . The magnetic block of  claim 1 , wherein at least one face of the magnetic block comprises a multi-pole magnetization.