The present invention relates to a hinge connection comprising a male member applied on a base plate, and having protrusions provided to be hinged and resiliently fitted between a pair of female members applied on a further base plate. The male member of the hinge connection is being formed by two parallel male legs, wherein each leg comprises protrusions comprising cogs or cut teeth. The female member is formed by two parallel female legs and each of the female members comprises a through hole for engaging said protrusions of the male legs. The present invention further provides construction elements comprising the hinge connection members of the instant application. In a particular embodiment such construction elements are stackable, and allow the construction of complex three-dimensional structures without loss of flexibility.

The present invention is a spinner device adapted for use as a toy or amusement device and in relieving stress. The spinner device preferably includes a plurality of radially extending arms, each arm having a magnetic mass therein and being magnetically mass adjustable. The spinner device preferably includes a magnetically attachable and detachable base device that allows the spinner device to function as a top. The spinner device further preferably includes a magnetically attachable and detachable display stand device that allows the spinner device to be rotated or spun while being displayed.

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.

An educational apparatus is disclosed. The educational apparatus has one or more first sheet members including a first side and a second side, the first side and the second side each having first markings indicating the same first surface area, and one or more first attachment portions disposed along some or substantially all of a perimeter of the one or more first sheet members. The educational apparatus also has one or more second sheet members including a first side and a second side, the first side and the second side each having second markings indicating the same second surface area, and one or more second attachment portions disposed along some or substantially all of a perimeter of the one or more second sheet members.

The present disclosure provides an integrated design building block with turnable modules inside, the building block comprising: a lower housing, an upper housing, and a plurality of turnable modules mechanism, the lower housing and the upper housing being fitted to form a plurality of receiving spaces, the plurality of turnable modules being disposed within the plurality of receiving spaces, respectively, wherein the turnable modules may be partially or completely received in the receiving spaces, the turnable modules each having a turnable module connection portion; the lower housing and the upper housing are fitted to form a body structure of the building block; a plurality of connection portions are provided on surfaces of the body structure; the turnable module connection portions are fitted to the plurality of connection portions on the surfaces of the body structure. The building block provided by the present disclosure has advantages of a simple mechanical structure and a low cost. The present disclosure further provides a building set.

The present invention concerns a toy bead (10, 100) comprising: two conjugated parts (11, 12; 110, 120), each part comprising a proximal end and a distal end; proximal ends of said conjugated parts comprising conjugated screwing means (11a, 12a; 110a, 120a) adapted to screw conjugated parts to each other in order to build the bead; distal ends of said conjugated parts comprising plugging means (17, 18; 170, 180), either male or female, adapted to plug said parts respectively to parts of other similar toy beads comprising corresponding plugging means; each conjugated part further comprising an internal canal (15, 16; 150, 160) extending from its proximal end to its distal end and opening to each end, the internal canal of one part being collinear to the internal canal of the its conjugated part when the conjugated parts are screwed to each other, so that a yarn can be threaded successively into internal canals of said conjugated parts.

The present invention concerns, a toy bead (10, 100) comprising: two conjugated parts(11, 12; 110, 120), each part comprising a proximal end and a distal end; proximal ends of said conjugated parts comprising conjugated screwing means (11a, 12a; 110a, 120a) adapted to screw conjugated parts to each other in order to build the bead; distal ends of said conjugated parts comprising plugging means (17, 18; 170, 180), either male or female, adapted to plug said parts respectively to parts of other similar toy beads comprising corresponding plugging means; each conjugated part further comprising an internal canal (15, 16; 150, 160) extending from its proximal end to its distal end and opening to each end, the internal canal of one part being collinear to the internal canal of the its conjugated part when the conjugated parts are screwed to each other, so that a yarn can be threaded successively into internal canals of said conjugated parts.

A play mat assembly includes a mat with a first major surface and an opposing second major surface and a plurality of extension coupling points on the first major surface. An extension having a proximal end is removably coupled with one of the plurality of extension coupling points. The extension extends away from the proximal end at the first major surface of the mat to a distal play piece connection point. A play piece is removably coupled with the play piece connection point.

An assembly unit includes a side plate having a plate shape and including a first coupling member on first side, a second coupling member on second side, and a third coupling member on each of third side and fourth side, a top plate having a plate shape and including a fourth coupling member on each side and a top stud on the top surface, and a bottom plate having a plate shape and including a fifth coupling member on each side and a bottom stud on the bottom surface. The first coupling member includes a protrusion. The second coupling member includes a groove. When the first coupling member of the side plate is engaged with the second coupling member of a neighboring side plate of the same type as the side plate, the protrusion of the side plate is fitted into the groove of the neighboring side plate.

An instrument includes a body, at least two modules, each separate from the one or other modules, including an operative portion and being movable relative to the body and, for each module, a mechanism for guiding the translation and rotation of the module along the body, the module being movable relative to the body, successively in translation parallel to a first axis and in rotation about a second axis perpendicular to the first axis and which is rigidly connected to the body, between an inoperative configuration in which the operative portion of the module is housed inside the body and a use configuration in which the operative portion of the module projects from the body. The two modules or two of the modules are arranged on either side of a single arm of the body, which extends along the first axis from a base to an end of the body.