Toy building set

Abstract

A toy building set comprising a group of building elements, each having at least one ball 1, 2 arranged on the building element, and where the ball 1, 2 is connected to other parts of the building element via a connection rod 3, 4, and where the toy building set further comprises at least one element having a socket formed by two jaws 5, being arranged and adapted for receiving said ball 1, 2 in order to form a ball and socket joint, and where the cross section of the connection rod 3, from where it is connected to the ball 1 and at least a distance away from the ball 1, is smaller than the cross section of the ball 1, so that it gives a certain degree of freedom for the socket to rotate around the ball 1. The connection rods 3, 4 also comprise connections rods 4 having a relatively large cross section, so that the connection rods 4 with a relatively large cross section reduces the degree of freedom for the socket to rotate around the ball 2.

1 . A toy building set comprising a group of building elements, each having at least one ball arranged on the building element, and where the ball is connected to other parts of the building element via a connection rod, and where the toy building set further comprises at least one element having a socket arranged and adapted for receiving said ball in order to form a ball and socket joint, and where the cross section of the connection rod, from where it is connected to the ball and at least a distance away from the ball, is smaller than the cross section of the ball, so that it gives a certain degree of freedom for the socket to rotate around the ball, characterized in, that the group of building elements comprises a first and a second type of connecting rods, and in that the first type of connection rod, at least close to the ball, has a cross section being relatively larger than the corresponding cross section of the second type of connection rod, so that the relatively larger cross section of the first type of connection rod reduces the degree of freedom on which the socket can rotate around a ball carried by the first type of connection rod, than the degree of freedom on which the socket can rotate around a ball carried by the second type of connection rod. 
     
     
         2 . A toy building set according to  claim 1 , characterized in, that the connection rod has an axis of symmetry, and in that the axis of symmetry extends through the ball carried by the connection rod. 
     
     
         3 . A toy building set according to  claim 2 , characterized in, that the axis of symmetry extends through the centre of the ball. 
     
     
         4 . A toy building set according to one or more of the preceding claims, characterized in, that the group of building elements comprises at least one building element having both a first and a second type of connections rods each carrying a ball. 
     
     
         5 . A toy building set according to  claim 4 , characterized in, that at least two of the balls are interconnected by a common connection rod. 
     
     
         6 . A toy building set according to  claim 5 , characterized in, that the common connection rod has one end forming the first type of connection rod having its relatively larger cross section near one of the balls, and another end forming the second type of connection rod having its smaller cross section near another ball. 
     
     
         7 . A toy building set according to one or more of  claim 4 ,  5  or  6 , characterized in, that at least one of the balls has precisely two connecting rods of the first type extending from it. 
     
     
         8 . A toy building set according to one or more of  claim 4 ,  5 ,  6  or  7  characterized in and that at least one other ball has only one connecting rod of the second type extending from it. 
     
     
         9 . A toy building set according to one or more of the preceding claims, characterized in, that the socket is formed by two resilient jaws, each having a concave coupling surface facing the other jaw, and having a spacing that ensures that the coupling surfaces on the two jaws lies against opposite sides of the ball, when the socket is mounted on the ball. 
     
     
         10 . A toy building set according to  claims 3 ,  7  and  9 , characterized in, that the concave coupling faces on the jaws extend between two side faces, and in that the distance between the two side faces, and the cross section of the first type of connection rods are selected so that the jaws mounted on a ball carried by two of the first type of connection rods having a common axis of symmetry, can only rotate around the common axis of symmetry of the two connections rods of the first type.