Magnetic building block

Abstract

The present disclosure provides a magnetic building block. The magnetic building block includes a building block main body, first magnets and a supporting pole assembly. The building block main body is formed by a plurality of side walls in mutual connection, crossed corners are formed at joints between adjacent side walls. First compartments are disposed at the crossed corners, the first magnets are disposed inside the first compartments, and the first magnets can rotate in the first compartments. Each first magnet is provided with a N pole and a S pole; and the supporting pole assembly includes a plurality of supporting poles for stopping the first magnets in the first compartments. Outer surfaces of surrounding wall group, an upper side wall and an lower side wall of the building block main body are all printed with decorative patterns.

1 . A magnetic building block, comprising:
 a building block main body ( 1 ), which is formed by a plurality of side walls ( 2 ) in successive connection; wherein the plurality of side walls comprise a first surrounding wall group ( 101 ), an upper side wall ( 25 ) and a lower side wall ( 26 ), an upper side of the first surrounding wall group ( 101 ) is connected to the upper side wall ( 25 ), a lower side of the first surrounding wall group ( 101 ) is connected to the lower side wall ( 26 ), and crossed corners ( 3 ) are formed at joints between the first surrounding wall group ( 101 ) and the upper side wall and between the first surrounding wall group ( 101 ) and the lower side wall: first compartments ( 4 ) are disposed at the crossed corners ( 3 ); each crossed corner ( 3 ) comprises a first crossed corner part and a second crossed corner part, each first compartment ( 4 ) comprises a first compartment part and a second compartment part, the first compartment part is disposed at the first crossed corner part formed at the joint of the upper side of the first surrounding wall group and the upper side wall, and the second compartment part is disposed at the second crossed corner part formed at the joint of the lower side of the first surrounding wall group and the lower side wall; and outer surfaces of the surrounding wall group ( 101 ), the upper side wall ( 25 ) and the lower side wall ( 26 ) are all printed with decorative patterns ( 106 );   a first inner wall group ( 102 ), which is connected to an inner surface of the first surrounding wall group ( 101 ), the first inner wall group ( 102 ) surrounds the inner surface of the first surrounding wall group ( 101 ) to form a mounting slot group ( 103 ), and the mounting slot group ( 103 ) is disposed between the first compartment part and the second compartment part;   a second inner wall group ( 104 ), which is connected to the inner surface of the upper side wall ( 25 ), the first compartment part is formed on the inner surfaces of the second inner wall group ( 104 ) and the upper side wall ( 25 ), and the first compartment part mutually communicates with the mounting slot group ( 103 );   a third inner wall group ( 105 ), which is connected to the inner surface of the lower side wall ( 26 ), the second compartment part is formed on the inner surfaces of the third inner wall group ( 105 ) and the lower side wall ( 26 ), and the second compartment part mutually communicates with the mounting slot group ( 103 );   first magnets ( 5 ), each of which comprises a first magnet set and a second magnet set, the first magnet set is disposed in the first compartment part of the first compartment ( 4 ) and capable of rotating in the first compartment part ( 4 ) of the first compartment, and the first magnet set is provided with a N pole and a S pole; and the second magnet set is disposed in the second compartment part of the first compartment ( 4 ) and capable of rotating in the second compartment part ( 4 ) of the first compartment, and the first magnet set and the second magnet set are provided with a N pole and a S pole, respectively:   
       a supporting pole assembly ( 10 ), which is disposed in the mounting slot group ( 103 ) and comprises a plurality of supporting poles, and upper sides of the plurality of supporting poles are used for stopping the first magnet set in the first compartment part while lower sides are used for stopping the second magnet set in the second compartment part;
 wherein the supporting poles are rod-shaped, and an extending direction of the first compartments is identical with that of the supporting poles; 
 wherein the upper side of each supporting pole is in contact with the first magnet set in the first compartment part, and the lower side of each supporting pole is in contact with the second magnet set in the second compartment part. 
 
     
     
         2 . The magnetic building block according to  claim 1 , wherein the decorative patterns have at least two colors. 
     
     
         3 . The magnetic building block according to  claim 1 , wherein the building block main body ( 1 ) is a square building block main body, the square building block main body ( 1 ) is provided with six side walls ( 2 ), which are a front side wall ( 21 ), a rear side wall ( 22 ), a left side wall ( 23 ), a right side wall ( 24 ), an upper side wall ( 25 ) and a lower side wall ( 26 ); the first side wall ( 21 ), the rear side wall ( 22 ), the left side wall ( 23 ) and the right side wall ( 24 ) are successively connected so as to form the first surrounding wall group ( 101 ), a right side of the front side wall ( 21 ) is connected to the right side wall ( 24 ), upper sides of the front side wall ( 21 ) and the right side wall ( 24 ) are both connected to the upper side wall ( 25 ), and lower sides of the front side wall ( 21 ) and the right side wall ( 24 ) are both connected to the lower side wall ( 26 ); a left side of the front side wall ( 21 ) is connected to the left side wall ( 23 ), upper sides of the front side wall ( 21 ) and the left side wall ( 23 ) are both connected to the upper side wall ( 25 ), and lower sides of the front side wall ( 21 ) and the left side wall ( 23 ) are both connected to the lower side wall ( 26 ); a left side of the rear side wall ( 22 ) is connected to the right side wall ( 24 ), upper sides of the rear side wall ( 22 ) and the right side wall ( 24 ) are both connected to the upper side wall ( 25 ), and lower sides of the rear side wall ( 22 ) and the right side wall ( 24 ) are both connected to the lower side wall ( 26 ); and a right side of the rear side wall ( 22 ) is connected to the left side wall ( 23 ), upper sides of the rear side wall ( 22 ) and the left side wall ( 23 ) are both connected to the upper side wall ( 25 ), and lower sides of the rear side wall ( 22 ) and the left side wall ( 23 ) are both connected to the lower side wall ( 26 ). 
     
     
         4 . The magnetic building block according to  claim 3 , wherein the first crossed corner part comprises a first crossed corner unit ( 31 ) disposed at a joint among the front side wall ( 21 ), the right side wall ( 24 ) and the upper side wall ( 25 ), a third crossed corner unit ( 33 ) disposed at a joint among the front side wall ( 21 ), the left side wall ( 23 ) and the upper side wall ( 25 ), a fifth crossed corner unit ( 35 ) disposed at a joint among the rear side wall ( 22 ), the right side wall ( 24 ) and the upper side wall ( 25 ), and a seventh crossed corner unit ( 37 ) disposed at a joint among the rear side wall ( 22 ), the left side wall ( 23 ) and the upper side wall ( 25 ); and the second crossed corner part comprises a second crossed corner unit ( 32 ) disposed at a joint among the front side wall ( 21 ), the right side wall ( 24 ) and the lower side wall ( 26 ), a fourth crossed corner unit ( 34 ) disposed at a joint among the front side wall ( 21 ), the left side wall ( 23 ) and the lower side wall ( 26 ), a sixth crossed corner unit ( 36 ) disposed at a joint among the rear side wall ( 22 ), the right side wall ( 24 ) and the lower side wall ( 26 ), and an eighth crossed corner unit ( 38 ) disposed at a joint among the rear side wall ( 22 ), the left side wall ( 23 ) and the lower side wall ( 26 ). 
     
     
         5 . The magnetic building block according to  claim 4 , wherein the first compartment part comprises a first compartment unit ( 41 ) disposed at the first crossed corner unit ( 31 ), a third compartment unit ( 43 ) disposed at the third crossed corner unit ( 33 ), a fifth compartment unit ( 45 ) disposed at the fifth crossed corner unit ( 35 ), and a seventh compartment unit ( 47 ) disposed at the seventh crossed corner unit ( 37 ); and the second compartment part comprises a second compartment unit ( 42 ) disposed at the second crossed corner unit ( 32 ), a fourth compartment unit ( 44 ) disposed at the fourth crossed corner unit ( 34 ), a sixth compartment unit ( 46 ) disposed at the sixth crossed corner unit ( 36 ), and an eighth compartment unit ( 48 ) disposed at the eighth crossed corner unit ( 38 ). 
     
     
         6 . The magnetic building block according to  claim 5 , wherein the first magnet set comprises a first magnet unit ( 51 ) disposed at the first compartment unit ( 41 ), a third magnet unit ( 53 ) disposed at the third compartment unit ( 43 ), a fifth magnet unit ( 55 ) disposed at the fifth compartment unit ( 45 ), and a seventh magnet unit ( 57 ) disposed at the seventh compartment unit ( 47 ); and the second magnet set comprises a second magnet unit ( 52 ) disposed at the second compartment unit ( 42 ), a fourth magnet unit ( 54 ) disposed at the fourth compartment unit ( 44 ), a sixth magnet unit ( 56 ) disposed at the sixth compartment unit ( 46 ), and an eighth magnet unit ( 58 ) disposed at the eighth compartment unit ( 48 ). 
     
     
         7 . The magnetic building block according to  claim 6 , wherein the mounting slot group comprises a first mounting slot disposed between the first compartment unit and the second compartment unit, a second mounting slot disposed between the third compartment and the fourth compartment, a third mounting slot disposed between the fifth compartment and the sixth compartment and a fourth mounting slot disposed between the seventh compartment and the eighth compartment: the supporting pole assembly ( 10 ) comprises a first supporting pole ( 711 ), a second supporting pole ( 712 ), a third supporting pole ( 713 ) and a fourth supporting pole ( 714 ), the first supporting pole is disposed in the first mounting slot, the second supporting pole is disposed in the second mounting slot, the third supporting pole is disposed in the third mounting slot, the fourth supporting pole is disposed in the fourth mounting slot: an upper side of the first supporting pole ( 711 ) stops the first magnet unit ( 51 ) in the first compartment unit ( 41 ), and a lower side of the first supporting pole ( 711 ) stops the second magnet unit ( 52 ) in the second compartment unit ( 42 ): an upper side of the second supporting pole ( 712 ) stops the third magnet unit ( 53 ) in the third compartment unit ( 43 ), and a lower side of second supporting pole ( 712 ) stops the fourth magnet unit ( 54 ) in the fourth compartment unit ( 44 ); an upper side of the third supporting pole ( 713 ) stops the fifth magnet unit ( 55 ) in the fifth compartment unit ( 45 ), and a lower side of the third supporting pole ( 713 ) stops the sixth magnet unit ( 56 ) in the sixth compartment unit ( 46 ); and an upper side of the fourth supporting pole ( 714 ) stops the seventh magnet unit ( 57 ) in the seventh compartment unit ( 47 ), and a lower side of the fourth supporting pole ( 714 ) stops the eighth magnet unit ( 58 ) in the eighth compartment unit ( 48 ). 
     
     
         8 . The magnetic building block according to  claim 7 , wherein the first supporting pole ( 711 ), the second supporting pole ( 712 ), the third supporting pole ( 713 ) and the fourth supporting pole ( 714 ) are spaced from each other, so the first supporting pole ( 711 ), the second supporting pole ( 712 ), the third supporting pole ( 713 ) and the fourth supporting pole ( 714 ) that are mutually independent and in an individual form are formed. 
     
     
         9 . The magnetic building block according to  claim 8 , wherein the building block main body is made of a light-transmitting material. 
     
     
         10 . The magnetic building block according to  claim 7 , further comprising a connecting shaft ( 71 ), the first supporting pole ( 711 ), the second supporting pole ( 712 ), the third supporting pole ( 713 ) and the fourth supporting pole ( 714 ) are all connected to the connecting shaft ( 71 ), and the first supporting pole ( 711 ), the second supporting pole ( 712 ), the third supporting pole ( 713 ) and the fourth supporting pole ( 714 ) are uniformly arranged around a circumferential direction of the connecting shaft ( 71 ). 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . A production process for a magnetic building block, comprising the following steps of:
 providing a building block main body ( 1 ), wherein the building block main body ( 1 ) comprises a first surrounding wall group, an upper side wall ( 25 ), a lower side wall ( 26 ), a first inner wall group ( 102 ), a third inner wall group ( 105 ) and a second inner wall group ( 104 ), a lower side of the first surrounding wall group ( 101 ) is connected to the lower side wall ( 26 ), and a second crossed corner part is formed at a joint between the lower side of the first surrounding wall group ( 101 ) and the lower side wall ( 26 ): the third inner wall group ( 105 ) is connected to an inner surface of the lower side wall ( 26 ), and a second compartment part is formed on inner surfaces of the third inner wall group ( 105 ) and the lower side wall ( 26 ); and the first inner wall group ( 102 ) is connected to an inner surface of the first surrounding wall group ( 101 ), the first inner wall group ( 102 ) surrounds the inner surface of the first surrounding wall group ( 101 ) to form a mounting slot group ( 103 ), and the mounting slot group ( 103 ) communicates with the second compartment part; and outer surfaces of the surrounding wall group ( 101 ), the upper side wall ( 25 ) and the lower side wall ( 26 ) are all printed with decorative patterns ( 106 );   providing first magnets ( 5 ), wherein each first magnet comprises a first magnet part and a second magnet part: the second magnet part is placed in the second compartment part and capable of rotating in the second compartment part, and the first magnet part and the second magnet part are both provided with a N pole and a S pole;   providing a supporting pole assembly ( 10 ), which comprises a plurality of supporting poles, and the plurality of supporting poles are placed in the mounting slot group ( 103 ), so that lower sides of the plurality of supporting poles stop the second magnet part in the second compartment part;   wherein the first magnet parts are placed at upper sides of the plurality of supporting poles, and the upper side wall ( 25 ) is connected to the upper side of the first surrounding wall group ( 101 ); and   the second inner wall group ( 104 ) is connected to an inner surface of the upper side wall ( 25 ), the first compartment part is formed on the inner surfaces of the second inner wall group ( 104 ) and the upper side wall ( 25 ), and the first compartment part communicates with the mounting slot group ( 103 ), so that the upper sides of the plurality of supporting poles stop the first magnet part in the first compartment part, and the first magnet part is capable of rotating in the first compartment part.   
     
     
         14 . The production process for the magnetic building block according to  claim 13 , wherein the first magnet parts are placed at the upper sides of the plurality of supporting poles, and the step for connecting the upper side wall ( 25 ) with the upper side of the first surrounding wall group ( 101 ) is that the upper side wall is connected to the upper side of the first surrounding wall group by an ultrasonic hot melting mode or an adhesive mode. 
     
     
         15 . The production process for the magnetic building block according to  claim 14 , wherein the decorative patterns have at least two colors. 
     
     
         16 . A production process for a magnetic building block, comprising the following steps of:
 providing a building block main body ( 1 ), wherein the building block main body ( 1 ) comprises a first surrounding wall group, an upper side wall ( 25 ), a lower side wall ( 26 ), a first inner wall group ( 102 ), a third inner wall group ( 105 ) and a second inner wall group ( 104 ), a lower side of the first surrounding wall group ( 101 ) is connected to the lower side wall ( 26 ), and a second crossed corner part is formed at a joint between the lower side of the first surrounding wall group ( 101 ) and the lower side wall ( 26 ); the third inner wall group ( 105 ) is connected to an inner surface of the lower side wall ( 26 ), and a second compartment part is formed on inner surfaces of the third inner wall group ( 105 ) and the lower side wall ( 26 ); and the first inner wall group ( 102 ) is connected to an inner surface of the first surrounding wall group ( 101 ), the first inner wall group ( 102 ) surrounds the inner surface of the first surrounding wall group ( 101 ) to form a mounting slot group ( 103 ), and the mounting slot group ( 103 ) communicates with the second compartment part;   providing a first magnet ( 5 ), which comprises a first magnet part and a second magnet part: the second magnet part is placed in the second compartment part and capable of rotating in the second compartment part, and the first magnet part and the second magnet part are both provided with a N pole and a S pole;   providing a supporting pole assembly ( 10 ), which comprises a plurality of supporting poles, and the plurality of supporting poles are placed in the mounting slot group ( 103 ), so that lower sides of the plurality of supporting poles stop the second magnet part in the second compartment part;   wherein the first magnet part is placed at upper sides of the supporting poles, and the upper side wall ( 25 ) is connected to the upper side of the first surrounding wall group ( 101 );   outer surfaces of the surrounding wall group ( 101 ), the upper side wall ( 25 ) and the lower side wall ( 26 ) are all printed with decorative patterns ( 106 ); and   a second inner wall group ( 104 ) is connected to the inner surface of the upper side wall ( 25 ), the first compartment part is formed on the inner surfaces of the second inner wall group ( 104 ) and the upper side wall ( 25 ), and the first compartment part communicates with the mounting slot group ( 103 ), so that the upper sides of the supporting poles stop the first magnet part in the first compartment part, and the first magnet part is capable of rotating in the first compartment part.   
     
     
         17 . The production process for the magnetic building block according to  claim 16 , wherein the first magnet is placed at upper sides of the plurality of supporting poles, and the step for connecting the upper side wall ( 25 ) with the upper side of the first surrounding wall group ( 101 ) is that the upper side wall is connected to the upper side of the first surrounding wall group by an ultrasonic hot melting mode or an adhesive mode. 
     
     
         18 . The production process for the magnetic building block according to  claim 16 , wherein the decorative patterns have at least two colors. 
     
     
         19 . A magnetic building block, comprising:
 a building block main body ( 1 ), which is formed by a plurality of side walls ( 2 ) in successive connection, wherein the plurality of side walls comprise a first surrounding wall group ( 101 ), an upper side wall ( 25 ) and a lower side wall ( 26 ), an upper side of the first surrounding wall group ( 101 ) is connected to the upper side wall ( 25 ), a lower side of the first surrounding wall group ( 101 ) is connected to the lower side wall ( 26 ), and crossed corners ( 3 ) are formed at joints between the first surrounding wall group ( 101 ) and the upper side wall and between the first surrounding wall group ( 101 ) and the lower side wall; first compartments ( 4 ) are disposed at the crossed corners ( 3 ); each crossed corner ( 3 ) comprises a first crossed corner part and a second crossed corner part, each first compartment ( 4 ) comprises a first compartment part and a second compartment part, the first compartment part is disposed at the first crossed corner part formed at the joint of the upper side of the first surrounding wall group and the upper side wall, and the second compartment part is disposed at the second crossed corner part formed at the joint of the lower side of the first surrounding wall group and the lower side wall;   a first inner wall group ( 102 ), which is connected to an inner surface of the first surrounding wall group ( 101 ), the first inner wall group ( 102 ) surrounds the inner surface of the first surrounding wall group ( 101 ) to form a mounting slot group ( 103 ), and the mounting slot group ( 103 ) is disposed between the first compartment part and the second compartment part;   a second inner wall group ( 104 ), which is connected to the inner surface of the upper side wall ( 25 ), the first compartment part is formed on the inner surfaces of the second inner wall group ( 104 ) and the upper side wall ( 25 ), and the first compartment part mutually communicates with the mounting slot group ( 103 );   a third inner wall group ( 105 ), which is connected to the inner surface of the lower side wall ( 26 ), the second compartment part is formed on the inner surfaces of the third inner wall group ( 105 ) and the lower side wall ( 26 ), and the second compartment part mutually communicates with the mounting slot group ( 103 );   first magnets ( 5 ), each of which comprises a first magnet set and a second magnet set, the first magnet set is disposed in the first compartment part of the first compartment ( 4 ) and capable of rotating in the first compartment part ( 4 ) of the first compartment, and the first magnet set is provided with a N pole and a S pole; and the second magnet set is disposed in the second compartment part of the first compartment ( 4 ) and capable of rotating in the second compartment part ( 4 ) of the first compartment, and the first magnet set and the second magnet set are provided with a N pole and a S pole, respectively;   a supporting pole assembly ( 10 ), which is disposed in the mounting slot group ( 103 ) and comprises a plurality of supporting poles, and upper sides of the plurality of supporting poles are used for stopping the first magnet set in the first compartment part while lower sides are used for stopping the second magnet set in the second compartment part;   wherein the supporting poles are rod-shaped, and an extending direction of the first compartments is identical with that of the supporting poles;   wherein the upper side of each supporting pole is in contact with the first magnet set in the first compartment part, and the lower side of each supporting pole is in contact with the second magnet set in the second compartment part.   
     
     
         20 . The magnetic building block according to  claim 19 , wherein the building block main body ( 1 ) is a square building block main body, the square building block main body ( 1 ) is provided with six side walls ( 2 ), which are a front side wall ( 21 ), a rear side wall ( 22 ), a left side wall ( 23 ), a right side wall ( 24 ), an upper side wall ( 25 ) and a lower side wall ( 26 ); the first side wall ( 21 ), the rear side wall ( 22 ), the left side wall ( 23 ) and the right side wall ( 24 ) are successively connected so as to form the first surrounding wall group ( 101 ), a right side of the front side wall ( 21 ) is connected to the right side wall ( 24 ), upper sides of the front side wall ( 21 ) and the right side wall ( 24 ) are both connected to the upper side wall ( 25 ), and lower sides of the front side wall ( 21 ) and the right side wall ( 24 ) are both connected to the lower side wall ( 26 ); a left side of the front side wall ( 21 ) is connected to the left side wall ( 23 ), upper sides of the front side wall ( 21 ) and the left side wall ( 23 ) are both connected to the upper side wall ( 25 ), and lower sides of the front side wall ( 21 ) and the left side wall ( 23 ) are both connected to the lower side wall ( 26 ); a left side of the rear side wall ( 22 ) is connected to the right side wall ( 24 ), upper sides of the rear side wall ( 22 ) and the right side wall ( 24 ) are both connected to the upper side wall ( 25 ), and lower sides of the rear side wall ( 22 ) and the right side wall ( 24 ) are both connected to the lower side wall ( 26 ); and a right side of the rear side wall ( 22 ) is connected to the left side wall ( 23 ), upper sides of the rear side wall ( 22 ) and the left side wall ( 23 ) are both connected to the upper side wall ( 25 ), and lower sides of the rear side wall ( 22 ) and the left side wall ( 23 ) are both connected to the lower side wall ( 26 ). 
     
     
         21 . The magnetic building block according to  claim 20 , wherein the first crossed corner part comprises a first crossed corner unit ( 31 ) disposed at a joint among the front side wall ( 21 ), the right side wall ( 24 ) and the upper side wall ( 25 ), a third crossed corner unit ( 33 ) disposed at a joint among the front side wall ( 21 ), the left side wall ( 23 ) and the upper side wall ( 25 ), a fifth crossed corner unit ( 35 ) disposed at a joint among the rear side wall ( 22 ), the right side wall ( 24 ) and the upper side wall ( 25 ), and a seventh crossed corner unit ( 37 ) disposed at a joint among the rear side wall ( 22 ), the left side wall ( 23 ) and the upper side wall ( 25 ); and the second crossed corner part comprises a second crossed corner unit ( 32 ) disposed at a joint among the front side wall ( 21 ), the right side wall ( 24 ) and the lower side wall ( 26 ), a fourth crossed corner unit ( 34 ) disposed at a joint among the front side wall ( 21 ), the left side wall ( 23 ) and the lower side wall ( 26 ), a sixth crossed corner unit ( 36 ) disposed at a joint among the rear side wall ( 22 ), the right side wall ( 24 ) and the lower side wall ( 26 ), and an eighth crossed corner unit ( 38 ) disposed at a joint among the rear side wall ( 22 ), the left side wall ( 23 ) and the lower side wall ( 26 ). 
     
     
         22 . A magnetic building block, comprising:
 a building block main body ( 1 ), which is formed by a plurality of side walls ( 2 ) in successive connection, wherein the plurality of side walls comprise a first surrounding wall group ( 101 ), an upper side wall ( 25 ) and a lower side wall ( 26 ), an upper side of the first surrounding wall group ( 101 ) is connected to the upper side wall ( 25 ), a lower side of the first surrounding wall group ( 101 ) is connected to the lower side wall ( 26 ), and crossed corners ( 3 ) are formed at joints between the first surrounding wall group ( 101 ) and the upper side wall and between the first surrounding wall group ( 101 ) and the lower side wall: first compartments ( 4 ) are disposed at the crossed corners ( 3 );   each crossed corner ( 3 ) comprises a first crossed corner part and a second crossed corner part, each first compartment ( 4 ) comprises a first compartment part and a second compartment part, the first compartment part is disposed at the first crossed corner part formed at the joint of the upper side of the first surrounding wall group and the upper side wall, and the second compartment part is disposed at the second crossed corner part formed at the joint of the lower side of the first surrounding wall group and the lower side wall; and outer surfaces of the surrounding wall group ( 101 ), the upper side wall ( 25 ) and the lower side wall ( 26 ) are all printed with decorative patterns ( 106 ):
 a first inner wall group ( 102 ), which is connected to an inner surface of the first surrounding wall group ( 101 ), the first inner wall group ( 102 ) surrounds the inner surface of the first surrounding wall group ( 101 ) to form a mounting slot group ( 103 ), and the mounting slot group ( 103 ) is disposed between the first compartment part and the second compartment part; 
 a second inner wall group ( 104 ), which is connected to the inner surface of the upper side wall ( 25 ), the first compartment part is formed on the inner surfaces of the second inner wall group ( 104 ) and the upper side wall ( 25 ), and the first compartment part mutually communicates with the mounting slot group ( 103 ); 
 a third inner wall group ( 105 ), which is connected to the inner surface of the lower side wall ( 26 ), the second compartment part is formed on the inner surfaces of the third inner wall group ( 105 ) and the lower side wall ( 26 ), and the second compartment part mutually communicates with the mounting slot group ( 103 ); 
 first magnets ( 5 ), each of which comprises a first magnet set and a second magnet set, the first magnet set is disposed in the first compartment part of the first compartment ( 4 ) and capable of rotating in the first compartment part ( 4 ) of the first compartment, and the first magnet set is provided with a N pole and a S pole; and the second magnet set is disposed in the second compartment part of the first compartment ( 4 ) and capable of rotating in the second compartment part ( 4 ) of the first compartment, and the first magnet set and the second magnet set are provided with a N pole and a S pole, respectively; 
 a supporting pole assembly ( 10 ), which is disposed in the mounting slot group ( 103 ) and comprises a plurality of supporting poles, and upper sides of the plurality of supporting poles are used for stopping the first magnet set in the first compartment part while lower sides are used for stopping the second magnet set in the second compartment part; 
 wherein the decorative patterns have at least two colors.