The exemplary embodiments herein provide a magnetic toy comprised of an outer male housing with an outer female housing that attach to one another through a post on the male housing and female attachment point on the female housing. A metallic partial enclosure is preferably sized to fit with notches positioned on the male and female housings and preferably includes a flat portion having an aperture for accept at least a portion of the post. A permanent magnet is fixed within the partial enclosure but is permitted to rotate about its longitudinal axis. A thin light-reflective element is also preferably sandwiched in between the outer male and female housings. Preferably, the magnet comprises a pair of triangular prisms having opposing polarity.

A magnetic toy includes a polygonal housing having a plurality of side walls, an accommodation portion located inside the polygonal housing and adjacent to a side wall of the polygonal housing, and a magnet having a length and a width oriented orthogonal to the length. The magnet is accommodated in the accommodation portion. The accommodation portion includes a first end portion, a second end portion opposite the first end portion, and an accommodation space located between the first end portion and the second end portion. A width of the first end portion in a direction orthogonal to the side wall is equal to or greater than the width of the magnet. The width of the first end portion is less than the length of the magnet. A width of the accommodation space in the direction orthogonal to the side wall is greater than the width of the first end portion.

An activity box includes two pairs of wheels having blind holes, two axles having two ends releasably insertable into the blind holes, and a box defining a space having a defined volume sufficiently large to fit the axles. The wheels include a first magnetically attractable component. The axles include a second magnetically attractable component secured at each end of each axle. The axles have a length spanning a width of the box, which has two pairs of through holes on two opposing sides to accommodate the axles, such that the axles are threaded through the through holes. The two pairs of wheels are rotatably attached to the box by magnetically coupling the first magnetically attractable component to the second magnetically attractable component, such that the activity box is configured to be used as a cart that can be rolled over a surface.

Circuit blocks are provided. A circuit block may include a substrate and at least one electrical component mounted on the substrate. The circuit block may also include a non-conductive frame coupled to the substrate, and at least one post coupled to the substrate and extending from the substrate and through at least a portion of the frame in a first direction substantially perpendicular to the major surface of the substrate. Moreover, the circuit block may include a contact coupled to a second, opposite surface of the substrate and including a corner section projecting outwardly from the frame and extending in at least two directions substantially perpendicular to a longitudinal axis of the at least one post. The block may also include at least one magnet positioned proximate the flexible corner section of the contact and configured to magnetically attract at least one other circuit block.

A connection unit includes: a body having peripheral edges; magnets, at least one of which being disposed on each side of the peripheral edges of the body; and electrode terminals, at least three of which being disposed on the each side of the peripheral edges of the body. An outer surface of the body has a curved surface. The electrode terminals are disposed along the curved surface or the surface having the polygonal cross section of the outer surface. The electrode terminals disposed on the peripheral edges of the body have either: one positive electrode terminal and two negative electrode terminals, or one negative electrode terminal and two positive electrode terminals.

The invention herein discloses a system including building blocks intended for educational, amusement or functional use of assembling into mechanical and electro-mechanical constructions. The building blocks are electrically conductive and have an electrical connector with an asymmetry property around one of the main, or natural, assembly planes. The asymmetric properties allow the connector to maintain high electrical conductance when assembled near an adjacent building block, without harming the building blocks physically and without requiring complex assembly rules and restrictions. The system can present rotational symmetry of 180 degrees, and can present elastic properties or magnetic properties to further increase the conductivity and durability of the connectors.

The present disclosure provides a magnetic building block for connecting with other magnetic building block. The magnetic building block includes a base, a cover, at least one horizontal magnet and at least one vertical magnet. The base includes at least two vertical accommodating grooves and at least one horizontal accommodating groove. The cover is configured to connect with the base and cover the at least two vertical accommodating grooves and the at least one horizontal accommodate groove. The at least one horizontal magnet is located at the at least one horizontal accommodating groove. The at least two vertical magnets are located at the at least two vertical accommodating grooves respectively. Magnetic pole directions of two adjacent vertical magnets of the at least two vertical magnets are opposite to each other.

A magnetic toy block and a kit suitable for the composition of toy assemblies. The magnetic block comprises a hollow body consisting of a first and a second shell member, identically configured with peripheral contact surfaces to contact with peripheral surfaces of other magnetic blocks of an assembly; each shell member is provided with male and female junction elements, which may be press-fitted into the female junction elements respectively into the male junction elements of another shell member in an assembled condition of the block. The junction elements extend inside the hollow body of the block in a direction parallel to a reference axis, at magnetic contact zones of the peripheral contact surface of the block; permanent magnets or ferromagnetic connection elements are housed in the female junction elements of one or both shell members of the toy block.

A magnetic toy includes a polygonal housing having a plurality of side walls, an accommodation portion located inside the polygonal housing and adjacent to a side wall of the polygonal housing, and a magnet having a length and a width oriented orthogonal to the length. The magnet is accommodated in the accommodation portion. The accommodation portion includes a first end portion, a second end portion opposite the first end portion, and an accommodation space located between the first end portion and the second end portion. A width of the first end portion in a direction orthogonal to the side wall is equal to or greater than the width of the magnet. The width of the first end portion is less than the length of the magnet. A width of the accommodation space in the direction orthogonal to the side wall is greater than the width of the first end portion.

The invention discloses a magnetic sheet, comprising: a frame structure, a plurality of magnetic structures are arranged on the periphery of the frame structure, the frame structure and the plurality of magnetic structures are integrally formed; wherein each of the plurality of magnetic structures comprises: a steel pipe, a magnet arranged in the steel pipe and plugs at both ends of the steel pipe. Through the magnetic structures which are integrated with the frame structure, after the magnetic sheet is used for a long time, the magnetic structures still can be attached to a magnetic sheet body, and the problems that the magnetic structures are damaged and fall off are avoided.