A toy construction block kit is disclosed. The basic unit of the toy construction block unit has three basic sides, with two side walls and a connecting wall. Each of the two side walls have ‘tongues” extending from their interior sides. The back connecting wall has means for reversibly capturing the tongues. The construction block units have two tongues that stick out from opposing walls, and a distal part which contains a double receiving clip. As each construction block unit has the two tongues and a double receiving clip, when two blocks are pushed together, they double lock. The construction block unit can be attached to one or more other construction block units, or could be attached to a blank cube.

A connection device and system is disclosed that is made up of a flexible grid and durable connectors for removable insertion into spaces of the grid.

The present invention provides a connecting structure for plate members, including a projection projected from one of the plate members in a first direction, and a groove provided on the other of the plate members to have inner faces facing each other in a second direction intersecting the first direction and configured to fittingly receive the projection. The projection includes a main body, a resilient portion provided on one side of the main body in the second direction and resiliently inwardly deformable in the second direction, and an engagement portion outwardly expanded in the second direction from the resilient portion and configured to be plastically deformed along and engage with one of the inner faces of the groove when the groove fittingly receives the projection.

The invention relates to children's construction kits for assembling building toys from connecting elements. The technical result is an increase in functional capabilities, permitting the assembly of simple and complex spatial constructions with dynamic properties. This technical result is achieved by virtue of a building toy consisting of a set of flat shape-forming and decorative modular elements made of a flexible resilient material and having fastening elements attached to the surfaces thereof, said fastening elements forming detachable joints capable of holding together connected portions of the surfaces, wherein each of the fastening elements takes the form of the centre of axial rotation of at least the held portion of the surface of a connected modular element, and each of the shape-forming modular elements has on its opposite surfaces at least one coaxial pair of fastening elements which are rigidly interconnected and have oppositely oriented mating surfaces.

A toy building set comprising one or more first building elements (1) having an integrally shaped body (2) and at least two plane knob surfaces (3) each being provided with at least one knob (4) extending perpendicular from the knob surface (3) and where the integrally shaped body (2) further has at least two plane socket surfaces (6) each being provided with at least one socket (7) each extending into a socket surface (6), and being adapted for frictional interconnection with the knobs on the knob surface on an identical building element, and where the two knob surfaces (3) extends in two mutually parallel and not coinciding planes and that the two socket surfaces (6) also extends in two mutually parallel and not coinciding planes, and in that the distance between the mutually parallel planes comprising the two knob surfaces (3) and the two socket surfaces (6) respectively, are identical, and the mutual position between the two knob surfaces (6) is the same as the corresponding mutual position between the two socket surfaces (3), so that it allows the knobs (4) at a first one of the two knob surfaces (3) to be inserted into the socket (7) of a first one of the two sockets (6) on an identical building element simultaneously with allowing the knobs (4) at a second one of the two knob surfaces (3) to be inserted into the socket (7) of a second one of the socket surfaces (6) of an identical building element.

A building block includes at least one of a plug portion and a socket portion. The plug portion has two cantilevered tongues deflectable toward each other. Each cantilevered tongue includes a first engaging portion. The socket portion defines a chamber and has two second engaging portions. The plug portion and the socket portion are configured in such a way that the plug portion of one building block is insertable into the chamber of the socket portion of another building block, and the two cantilevered tongues of the building block deflect toward each other after insertion of the plug portion of the building block into the chamber of the socket portion of the other building block, which allows the first engaging portions of the building block to be engaged with the second engaging portions of the other building block, thereby connecting the two building blocks together.

A building block includes at least one of a plug portion and a socket portion. The plug portion has two cantilevered tongues deflectable toward each other. Each cantilevered tongue includes a first engaging portion. The socket portion defines a chamber and has two second engaging portions. The plug portion and the socket portion are configured in such a way that the plug portion of one building block is insertable into the chamber of the socket portion of another building block, and the two cantilevered tongues of the building block deflect toward each other after insertion of the plug portion of the building block into the chamber of the socket portion of the other building block, which allows the first engaging portions of the building block to be engaged with the second engaging portions of the other building block, thereby connecting the two building blocks together.

A panel and a system for use in building a lightweight structure are provided. The panel, made of a film or a sheet capable of being curved or bent with fingers, includes a body in a geometric shape circumscribed by straight or curved edges, and at least one joint formation along the edge for panel connection. The joint formation has tabs separated by at least one gap. Each tab expands bilaterally and proximally from the body at its base, and each gap is positioned along the edge so as to accept the base of the tab. The joint formations along the edges of varied curvatures are alignedly, hingedly, and detachably interlocked with each other by twisting the panels with fingers to individually hook the tab at the gap. The panels are assembled into geometric structures having flat or curved faces.

A toy construction block kit is disclosed. The basic unit of the toy construction block unit has three basic sides, with two side walls and a connecting wall. Each of the two side walls have tongues extending from their interior sides. The back connecting wall has means for reversibly capturing the tongues. The construction block units have two tongues that stick out from opposing walls, and a distal part which contains a double receiving clip. As each construction block unit has the two tongues and a double receiving clip, when two blocks are pushed together, they double lock. The construction block unit can be attached to one or more other construction block units, or could be attached to a blank cube.

An assembly unit includes side plate having first coupling member on first side, second coupling member on second side, and third coupling member on each of third and fourth sides, top plate including fourth coupling member and top stud, and bottom plate including fifth coupling member and bottom stud. The first coupling member is engaged with the second coupling member of neighboring side plate. The fourth coupling member is engaged with the third coupling member. The fifth coupling member is engaged with the third coupling member. The first coupling member includes protrusion. The second coupling member includes groove. The protrusion is fitted into the groove of the neighboring side plate. The third coupling member includes thread. Each of the fourth and fifth coupling members includes thread. The fourth and fifth coupling members are engaged with the third coupling member in a screwed manner using the threads.