A ride-on vehicle for children comprising a main body that includes one or more built-in toy vehicle tracks that allow a toy vehicle to travel on the main body. A wheel assembly comprising a plurality of wheels is coupled to the main body. A drive assembly is operatively coupled to the wheel assembly and is configured to drive two or more wheels of the wheel assembly. A steering assembly is also operatively coupled to the wheel assembly and is configured to steer the vehicle based on a received user input.

A ride-on vehicle for children comprising a main body that includes one or more built-in toy vehicle tracks that allow a toy vehicle to travel on the main body. A wheel assembly comprising a plurality of wheels is coupled to the main body. A drive assembly is operatively coupled to the wheel assembly and is configured to drive two or more wheels of the wheel assembly. A steering assembly is also operatively coupled to the wheel assembly and is configured to steer the vehicle based on a received user input.

A self-rotating display device includes and outer light transmissive container (402) containing a light transmissive fluid (406) and an body (404) containing an electric motor (421) for rotating the body with respect to the outer container. The body also carries an amount of the fluid (430a) contacting the fluid in the outer container through a pressure equalizing gap (431) in the body which forms a fluid pathway between the inner cavity of the body and the inner chamber of the outer container. The fluid pathway forms self-regulating pressure relief structure which accommodates slight pressure variations in the fluid due to climactic conditions for example. A specialized reduced footprint fluid-immersible electric motor having separate field and compass magnets, which do not rotate relative to each other, helps eliminate magnetic cogging. The device can be manufactured according to a method which eliminates the necessity of a fill hole in the body.

A self-rotating display device includes and outer light transmissive container (402) containing a light transmissive fluid (406) and an body (404) containing an electric motor (421) for rotating the body with respect to the outer container. The body also carries an amount of the fluid (430a) contacting the fluid in the outer container through a pressure equalizing gap (431) in the body which forms a fluid pathway between the inner cavity of the body and the inner chamber of the outer container. The fluid pathway forms self-regulating pressure relief structure which accommodates slight pressure variations in the fluid due to climactic conditions for example. A specialized reduced footprint fluid-immersible electric motor having separate field and compass magnets, which do not rotate relative to each other, helps eliminate magnetic cogging. The device can be manufactured according to a method which eliminates the necessity of a fill hole in the body.

A robot system has a follower robot and a leader robot. The follower robot follows the path of the leader robot using infrared (IR) signals. The follower robot follows the physical path and positioning of the leader robot. The leader robot is permitted to travel an arbitrary path or is controlled by a wireless transmitter. Relative robot positioning, being distance or direction can use an infrared system between respective robots.

A robot system has a follower robot and a leader robot. The follower robot follows the path of the leader robot using infrared (IR) signals. The follower robot follows the physical path and positioning of the leader robot. The leader robot is permitted to travel an arbitrary path or is controlled by a wireless transmitter. Relative robot positioning, being distance or direction can use an infrared system between respective robots.

A paddling method for a craft is provided, which is a method for driving a rotating ring to float and rotate by the dynamic force of water. The rotating ring comprises a rotating inner ring and a rotating outer ring, at least three connectors are connected between the rotating inner ring and the rotating outer ring, an external part of the connector is provided with a rotating blade, and the rotating blade is placed in water in a water-sealing container. The paddling method for the craft of the present invention has advantages of being novel in conception and design, good in rotating scenery effects, good in impression and the like.

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.

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 present disclosure provides a drift toy car including a power assembly, a steering assembly, a control assembly, a driving wheel, a driven assembly, and a housing. The power assembly, the control assembly, and the driven assembly are all mounted in the housing, the power assembly is connected to the driving wheel to provide power to the toy car, a connecting plate of the steering assembly is connected to a driven wheel device of the driven assembly, and the connecting plate is controlled by the steering assembly for turning a preset angle; the control assembly is configured to receive control instructions and control the steering assembly, making the driven wheel device perform steering; once the movement direction of the driven wheel device deviates from the movement direction of the driving wheel, the toy car performs steering and drift.