Abstract:
A spatial logical toy is formed from a total of eighteen toy elements, out of which two sets of eight identical toy elements two connecting elements are provided. The elements of the two sets have cam members with hollows with spherical convex or concave surfaces in-between. The elements are connected by the aid of the cams and the two remaining centrally positioned substantially identical connecting elements each having a T-shape cross-section and when assembled the toy is in the form of a regular or an irregular solid. Fixation is performed by one single screw passing through bores in the connecting elements. In such a manner the toy elements forming the lateral faces of the spatial logical toy can be rotated along the spatial axes and by yielding several variation possibilities the toy is well suitable for stimulating logical thinking activity.

Description:
BACKGROUND OF THE INVENTION 
     The invention relates to a spatial logical toy having a total of eighteen toy elements which form a regular or an irregular spatial body, preferably an oblong body, in the assembled state. 
     Spatial logical toys are well known, such as that described in the HU-PS No. 170 062 of the same applicant, which relates to a spatial logical toy consisting of twenty-seven solids which form a cube in the assembled state. The toy elements, in the shape of small cubes, may be turned along the spatial axes of the cube by means of connecting elements arranged in the geometric center of the large cube. The surfaces of the small cubes forming each surface of the large cube are colored or carry numbers, figures or any other symbols which can be assembled into the predetermined logical order of sequence by simultaneously rotating the nine toy elements forming the surfaces of the &#34;large cube&#34;. 
     SUMMARY OF THE INVENTION 
     The logical toy according to the present invention represents an improved form of the previously described spatial logical toy. 
     The construction is based on the same principles, however, the internal connection is performed by means of absolutely new and particular solids. 
     By this it is meant that any six or nine toy elements out of the toy elements forming the surfaces of the rectangular solid body can be simultaneously rotated around any of the spatial axes of the solid. In such a manner the colors, figures, numbers or any other symbols (e.g. dominoes) on the outer surfaces of the toy elements forming the surface of the spatial logical toy according to the invention yield innumerable possible variations serving in particular for stimulating the logical thinking of teen-agers, simultaneously making possible the set up of rules of different indoor games, as well as the performance of the same. 
     The object of the invention is to develop a spatial logical toy, which is built up of a total of eighteen toy elements forming a solid (a regular or amorphous body), preferably a rectangular solid shaped body, in the assembled state, while the toy elements are mutually connected in the center of the solid without using separate connecting profiles, merely by the proper shape of the solids of the toy elements. Along the spatial axes of the spatial logical toy, six or nine toy elements can be simultaneously rotated, yielding the possibility of several variations of play by means of the symbols, numbers, colors etc. to be found on the outer surface, i.e. by the contents carried by them. 
     In accordance with the invention the object is achieved in such a manner, that out of the eighteen toy elements, two sets of eight toy elements are each shaped in an identical manner, while two identical toy elements are formed as to realize the central fixation of the toy elements. One corner of one side of one set of identically shaped eight toy elements, preferably small cubes, which faces the geometrical center of the assembled solid is formed as an articulated solid or cam which is connected mutually and adjoined to the two preferential toy elements and is fixed with one single spring screw to form the spatial logical toy according to the invention. 
     The key feature according to the invention, i.e. shape, mode of interconnection and central fixture will be described in detail by means of two preferred embodiments, by the aid of the accompanying drawings, wherein 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 shows the spatial logical toy in the assembled state, 
     FIG. 2 shows a plan view one of the identical eight toy elements belonging to the first group, 
     FIG. 3 is a plan view of one of the eight identically shaped toy elements belonging to the second group, 
     FIG. 4 is a plan view of one of the two toy elements serving for the central fixation, 
     FIG. 5 is a cross-sectional view of the toy along line V--V in FIG. 1, 
     FIG. 6 is a cross-sectional view of the toy along line VI--VI in FIG. 1, 
     FIG. 7 is a plan view of a second embodiment of one of the eight identical toy elements belonging to the first group, 
     FIG. 8 is a plan view of the second embodiment of one of the toy elements belonging to the second group, 
     FIG. 9 is a plan view of one of the toy elements according to the second embodiment for providing connection between the toy elements, 
     FIG. 10 is a cross-sectional view of the toy according to the second embodiment of the invention along line X--X in FIG. 11, 
     FIG. 11 is a cross-sectional view along line XI--XI in FIG. 10, and 
     FIG. 12 is a plan view of the intersecting axes member for fixing the toy elements. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIGS. 1-6, toy shown in FIG. 1 includes eighteen toy elements, of which the eight identically shaped toy elements 1 belonging to the first group are cubes. To the edge of one of the corners of each of the cubes, a solid or cam 2 is connected. The solid 2 has two confining faces 2a, 2b, which lie at a predetermined unit distance from the surface of the cube and extend parallel to the confining faces 1a, 1b of the cube, accordingly, they are at right angles to each other. The third face 2c of the solid 2 lies in the same plane as the quadratic surface 1c at a given corner of the cube, thus the solid 2 has essentially the shape of a corner-profile and the faces lying parallel to the confining faces of the cube are confined by a curve 2d, 2e of the shape of a quarter of an ellipse, while the thickness of the face is equal to the unit distance measured from the cube. In such a manner the corner-profile forms a hollow with a curved surface and is connected to the cube via the solid adjoined to the two faces 1a, 1b. 
     The eight identically shaped toy elements 3 belonging to the second group are also dice-shaped, in fact they consist of a cube and a closely connected solid or cam 4 as shown in FIG. 3. The solid 4 lies at the previously chosen unit distance from one of the confining faces of the cube. One of the confining face 5 protruding from the plane of the cube, forms a plane surface running parallel with the confining face 3a of the cube, roughly it is rectangular, its lower borderline 5a is straight and closes a plane 5b being identical with the lower confining plane 3b of the cube. The upper borderline 5c is curved, while the milling with a parallel convex curved surface ensures the preselected unit distance, accordingly, the thickness of the face 5d lying next to the milling will be of the same dimension. The third and fourth confining faces 5e, 5f of the solid are planes running parallel with the corresponding lateral faces 3c, 3d of the cube and they are joined to the frontal face of the cube via the hollow formed with the convex surface being in compliance with the dimension having been selected as the unit distance. In such a manner, the other sides of said hollow are formed by the opposite lying faces of the cube, the corners of which being cut-off by the concave curved line 6. 
     The third group of the toy elements of the logical toy according to the invention comprises two substantially identical toy elements 7,7&#39;, which are arranged in the middle-part of the solid as shown in FIG. 6. These elements appear in the side-view with a T-shape including a thick vertical shank. The vertical shank of the T-shape is formed by the prism 8 with a quadratic base, while the horizontal shank of the T-shape is formed by a solid 8a, having a square base 8b in the top-view. The size of the square 8b corresponds to the size of the sides of the cubes forming the aforementioned two toy elements. Along the circumference of the prism there is a curved groove 8c, the size of which corresponds to the preselected unit distance, while the width of the horizontal &#34;shank&#34; 8d has been selected so that the upper part of the rectangle 5c confined by a curved convex line, formed by the solid of the toy element 3 belonging to the second group, protruding from one of the confining planes of the cube, being separated from said confining face of the cube by the convex hollow 5d selected as the unit, should accurately fit into the hollow 8e next to the horizontal shank of the T-shape and in such a manner, that the confining faces 3c, 8b below the fitted parts of the solids should lie in the same plane. 
     Fixation is performed by the screw 9 enclosed by the spring 9a, which is screwed into the threaded bore 7a of the centrally located toy element 7, the screw 9 also passing through the through-bore 7b of the opposite lying, substantially identically shaped toy element 7&#39;. The throughbore 7b is accessed by means of removable lid 7c in base 8b. The toy is assembled in such a manner, that the toy element 7 provided with the threaded bore 7a is placed onto the solid part forming the horizontal shank of the T-shape. After having fitted the oblong protruding part of the toy elements 3 confined by a curved line into the hollows of the toy element 7 running parallel with the lateral faces of the quadratic prism, the four sides are connected. In such a manner a complex solid in form of a Greek cross is obtained. Hereafter the two halves are fitted together, the screw 9 with the spring 9a is passed through the through-bore 7b of the toy-element 7&#39; and screwed into the threaded bore 7a of the toy element 7. Thereafter the bore 7b on the toy-element 7&#39; is closed by means of the closely fitted lid 7c. 
     In such a manner the logical toy according to the invertion forms an indissoluble unity. By connecting the hollows with the curved surfaces, the toy elements 1, 3 can be rotated in any direction of the spatial axes of the logical toy. Complete fixation is performed by means of one single screw and connection between the toy elements, in a rotatable but simultaneously indissolubly manner, can be achieved by means of the solids themselves. 
     A further preferable embodiment of the spatial logical toy can be built up of the following toy-elements as shown in FIGS. 7-12. 
     The toy element 10 belonging to the first group (FIG. 7) includes a cube 10a, at the corner of which the solid or cam 11 has been arranged. One of the confining faces 11a of the solid 11 lies coplanar with the confining face 10b of the cube, while the further two confining faces 11b, 11c are protruding plane surfaces which simultaneously run parallel with the surfaces 10c, 10d of the cube. The third and fourth confining faces are formed by the curved convex surfaces 12, as a consequence, the solid 11 forms a V-shaped extension at the corner of the cube. 
     The toy-element 13 belonging to the second group is an articulated solid and has been essentially deduced from a cube (FIG. 8). In one of the confining surfaces 13a of the cube there is the hollow 14 and the channel 15 with a semi-circular profile running perpendicularly to the hollow 14, but its length continues for the full length of the solid and protrudes from the plane of the other confining face 13b of the cube. One of the confining faces 16a of the protruding solid or cam 16 is formed by a plane running parallel with the confining face 13b of the cube, to which planes 16b, 16c  running parallel with each other are joined on both sides and next to them the sides of the cube are milled with the concave connecting surfaces 17. 
     The toy element 18, 18&#39; representing the connecting elements (FIG. 9) are substantially identical with the solids having been previously described in connection with the first embodiment of the invention (FIG. 4), except that the surface 18a is a spherical segment confining surface with no hollow between it and the shank. 
     FIG. 12 shows one intersecting axes member 19. Each member 19 has intersecting axes formed by the four half cylinders 20 connected to the centrally located flat prism 21 and by the half discs 22 arranged at the ends of the cylinders 20, integrally formed therewith. The intersecting axes members 19 fit into the hollows 14, and their cylindrical portions fit into the channels 15. 
     Assembly is performed in the same manner as previously described in connection with the first embodiment. The screw 23 enclosed by the spring 24 is screwed into the bore 25 passing through the connecting element 18&#39; and accessed through lid 18a, the bore 26 in element 18 and the centrally positioned prism bores 27 of the intersecting axes members 19. After having tightened the screw 23, the toy becomes unreleasable and can be disassembled only after the removal of the screw. Rotation becomes possible, similarly with respect to the first embodiment, in any direction along the spatial axes of the spatial logical toy. 
     By rotating the toy element several variations may be obtained. 
     The greatest advantages of the invention lies in that on the surface of the toy-elements relief-like configurations (symbols, figures, letters etc.) may be formed, as a consequence a toy may be created for blind people being absolutely equivalent with the logical toy for those with perfect eyesight. 
     For the purpose of expendience, the toy elements forming the spatial logical toy, in particular cubes, may be produced from synthetic material by injection molding. In order to save material, the elements may be prepared as hollow elements.