The invention provides a holding device comprising a locking member having a longitudinal axis, an external surface and a first end, an actuator for displacing said locking member along its longitudinal axis between a holding position and a released position, a guiding part, for engaging said external surface of said locking member and guiding its displacement functionally along its longitudinal axis, and an alignment sensor for detecting alignment with another device having a complementary guiding part, complementary with said locking member, said alignment sensor functionally coupled with said actuator for displacing said locking member when alignment with said complementary guiding part is sensed.

A toy construction set. The toy construction set includes at least a plurality of hubs and a plurality of connectors. The plurality of hubs may each include a plurality of segments joined together to form a shape. Each of the plurality of segments includes a plurality of connection points. The plurality of connectors each include a first clip and a second clip. The first clips and the second clips are configured to releasably connect to the connection points of the plurality of segments of the plurality of hubs.

In the present invention, a toy block for an assembly toy has a first flat surface and a second flat surface at both ends. Formed on the first flat surface are male parts that project vertically and female parts that are vertically indented. Formed on the second flat surface are a male part that vertically projects, and female parts that are vertically indented. When two toy blocks are linked together, the male parts of one block fit into the female parts of other toy block, and the male part of the other toy block fits into a female part of the other toy block. This allows the linking surfaces of the toy blocks having the male parts and female parts to link to each other at a variety of angles. The toy blocks rotate relative to each other when linked together.

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.

A construction kit enables building of complex structures. The kit can include pole connectors, along with a series of hubs. For instance, two-point hubs, four-point hubs, eight-point hubs, five-point hubs, six-point hubs, and a clip can be the constituent parts of the kit. Some of the hubs can be flexible to provide further utility and additional angles for building. Complex structures, such as a ball-shaped connector can also be achieved from the base components.

An air driven toy includes at least one connectible section that is removably couplable to an air flow generator to receive the object and defines at least one path for fluid flow through the at least one connectible section, wherein the air flow generator is configured to cause the object to be propelled through the at least one connectible section.

A connecting structure for an assembled toy includes a first connector and a second connector. The first connector is provided with a protruding structure, a first wavy step being formed on an outer surface of the protruding structure. The second connector is provided with a recessed structure, a second wavy step mating with the first wavy step being provided on an inner surface of the recessed structure. The protruding structure and the recessed structure mate with and are locked to each other to achieve a detachable connection between the first connector and the second connector. When the first connector is rotated relative to the second connector, the first wavy step and the second wavy step generate an interaction force to release the locking of the protruding structure and the recessed structure, so the first connector and the second connector are separated from each other.