Children's play cube for pattern etc. construction

摘要

Each hollow rotary cube (10) is made up of identical plastics injection-moulded halves (1,2) along a centrally dividing axis and parallel to one of the two surfaces. Each of the axis-divided halves parallel to the axis is recessed in dovetail form (4) near the edge making the full face of the surface. The two halves (1,2) are held together when the dovetail noses lock into their respective grooved recesses (4). The cube sides normal to the groove (4) line each have a round hole (6) for a bush projection so the bush can rotate. Each cube consists of a single injection-moulded plastics component whose two opposing sides intersecting the axis lie open. Three and eight continuous strips integrated with the inside surface of the cube point towards the axis and make contact with the projection and centrally bushes sleeve.