An insert-and-twist building block structure includes a connection bar and a connection terminal unit. The connection bar has an end from which a combination projection section extends and has a conic shape. The combination projection section has an external circumferential surface formed with a bead ring including multiple raised beads intermittently arranged in a ring configuration. The connection terminal unit includes a connection terminal having an end inward recessed to form a combination cavity in a conic shape. The combination cavity has an internal circumferential surface formed with a groove ring including multiple recessed grooves intermittently arranged in a ring configuration. The recessed grooves each a middle portion forming a deep trough section and two ends each forming a shallow trough section, and a depth is decreased from the deep trough section toward the shallow trough sections.

The present disclosure relates to a prefabricated joint toy. An intermediate ring portion of a second toy block is inserted into a fitting gap of a first toy block, so that the intermediate ring portion of the second toy block is arranged between a first coupling ring and a second coupling ring of the first toy block. Ring protrusions respectively formed on upper and lower sides of the intermediate ring portion are respectively inserted into the first coupling ring and the second coupling ring of the first toy block.

A rotatable joint, comprising: at least three bar connectors; an axis piece comprising a central pivot and at least one of the at least three bar connectors longitudinally aligned with the central pivot; and two rotatable joint pieces each comprising a bushing and at least one of the at least three bar connectors oriented along the diameter of the bushing and aligned along the axis of symmetry of the bushing, wherein the bushing of each of the two rotatable joints pieces is configured to slide over the central pivot thereby coupling the two bushings with the central pivot and allowing the rotatable joint pieces to rotate about the central pivot, and orient the bar connectors of the rotatable joint pieces perpendicular to the bar connector of the axis piece.

A toy construction element includes a first face recessed from a second face by a recess height, a first peg extending from the second face, and an engaging member disposed on the first face. The first peg has a first peg height relative to the second face. The engaging member may include a column portion and a peg portion, wherein the column portion extends from a first end portion at the first face to a second end portion at which the peg portion is disposed. The column portion may have a column height substantially equal to the recess height, and the peg portion may have a peg portion height substantially equal to the first peg height. A toy construction element may be part of a toy construction assembly, in which an engaging member of the toy construction element connects to a hole defined by a flexible member.

A method for building large-scale play structures having an ideal modularity is provided. The method includes providing panels having a thickness, a planar-quadrangle shape including a length, a width and four chamfered edges with a set of holes located along each edge, the holes located at a fixed interval relative to one another, the fixed interval providing a unit of length, a fixed-location fastening element located in each of the holes, respectively; providing a plurality of movable fastening elements each including a hand-grip to allow the respective movable fastening element to be moved between an unsecured position and a secured position without the use of tools when received by any one of the plurality of fixed-location fastening elements; and employing the fasteners to secure a plurality of the panels to one another to provide a structure that has an overall height, an overall length and an overall width, the structure including at least a pair of panels oriented one above the other and at least a pair of panels located at the same elevation and secured at right angles to one another.

A kit of parts is provided for a functional toy, such as a children's walker or push along wagon. The kit includes one or more connector(s) having a first and second end, and a radially extending flange therebetween; and one or more foam element(s) with at least one essentially planar surface having at least one opening extending perpendicular to the surface for receiving at least the first end of the connector. The connector flange is configured as a stopper for the insertion of the first end into the foam element opening. When the first end is inserted into the foam element opening to the stopper position, and a further suitable amount of force is applied, the flange of the connector is countersunk into the surface of the foam element, and remains countersunk after the further force is removed due to the frictional force between the connector and the opening.

The invention relates to a modular construction system comprising at least one object and a coupling element releasably connectable to the object, wherein: the object comprises at least one surface with at least one opening, which opening comprises a number of inward extending lips arranged distributed over the periphery of the opening; the coupling element comprises a body with an axial axis arrangeable in the opening, which body is provided along its outer periphery with at least one outward extending locking cam; wherein the coupling element is arrangeable in at least one arranging orientation in the opening of the object, and is rotatable in the opening relative to the object to at least one locking orientation, in which locking orientation the coupling element is locked in an axial direction and a rotational direction. The invention also relates to a coupling element, object and tool intended and configured to form part of such a modular construction system. External elements such as a skin plate, a fabric, a cord or the like can be attached to a structure according to the invention by means of an attaching element with a shank and a widened head, which shank can be inserted releasably into a continuous opening of a coupling element.

A tile game system is provided that includes a plurality of two-dimensional and three-dimensional components. The two-dimensional components can include a plurality of modular tiles provided in various sizes and configurations that can be joined together to form a grid-based gameplay area. The three-dimensional components can include external boundaries for the gameplay area, internal boundaries, terrain elements such as columns and staircases, and game figures. According to aspects of the present disclosure, the external and internal boundaries can be provided with recessed sections that allow a game figure to be contained within a single grid square and prevent the grid of the gameplay area from becoming warped. According to some aspects of the present disclosure the internal and external boundaries can be illuminated and provided with removable and interchangeable light-permeable skins that allow a user to switch between various illuminated designs.

The invention provides a locking clamp system for a foldable dollhouse. The locking clamp system comprises a base clamp and side clamp that can be connected to each other and can in turn be connected with the wall, floor, and roof floor panels of the dollhouse. The locking clamp system includes a front locking clamp system that comprises a front base clamp and front side clamp that can be connected to each other and can in turn be connected with the wall, floor, and roof floor panels of the dollhouse. The locking clamp system includes a rear locking clamp system that comprises a rear base clamp and rear side clamp that can be connected to each other and can in turn be connected with the wall, floor, and roof floor panels of the dollhouse. In addition, the invention provides a foldable dollhouse, in which a locking clamp system has been used.

An insert-and-twist building block structure includes a connection bar and a connection terminal unit. The connection bar has an end from which a combination projection section extends and has a conic shape. The combination projection section has an external circumferential surface formed with a bead ring including multiple raised beads intermittently arranged in a ring configuration. The connection terminal unit includes a connection terminal having an end inward recessed to form a combination cavity in a conic shape. The combination cavity has an internal circumferential surface formed with a groove ring including multiple recessed grooves intermittently arranged in a ring configuration. The recessed grooves each a middle portion forming a deep trough section and two ends each forming a shallow trough section, and a depth is decreased from the deep trough section toward the shallow trough sections.