A child seat for riding vehicles comprising a cross beam, a front fork, and a cushion disposed on the cross beam, a foldable armrest being mounted at the connection position between the cross beam and the front fork, a position-adjustable bearing beam which is erected on an oblique vehicle pipe being disposed on the front fork, reversible pedals being disposed at the bottoms of the two side plates of the front fork and an axle connection member connected to a seat pipe of the riding vehicle. The angle between the cross beam and the front fork is adjustable, and the child seat realizes fast and toolless installation and remove.

A quick replacement Structure for a seat cushion of an exercise hike is disclosed. The quick replacement structure includes an adaptor member, a rotation unit and a quick release assembly. The rotation unit is assembled between the adaptor member and seat bows of the seat cushion, and the adaptor member can be conveniently fastened on the exercise bike in cooperation with the quick-release assembly so that a user can quickly replace the preferred seat cushion.

A quick replacement Structure for a seat cushion of an exercise hike is disclosed. The quick replacement structure includes an adaptor member, a rotation unit and a quick release assembly. The rotation unit is assembled between the adaptor member and seat bows of the seat cushion, and the adaptor member can be conveniently fastened on the exercise bike in cooperation with the quick-release assembly so that a user can quickly replace the preferred seat cushion.

A control device includes an actuation lever, a bearing mounted in the actuation lever, an axle extended through the bearing, and a base supported by the axle, whereby the actuation lever is rotatably coupled with the base, via the bearing and the axle, for rotation relative to the base.

A control device includes an actuation lever, a bearing mounted in the actuation lever, an axle extended through the bearing, and a base supported by the axle, whereby the actuation lever is rotatably coupled with the base, via the bearing and the axle, for rotation relative to the base.

An electric vehicle and a powertrain for an electric vehicle are disclosed. According to an embodiment, an electric vehicle includes a suspension system, a seat, a steering system, an electric motor and a battery pack. The battery pack includes one or more battery modules to provide power to the electric motor and a battery enclosure housing the one or more battery modules. The battery enclosure is a structural element of the electric vehicle to receive loads from at least two of the suspension system, the seat and the steering system.

An electric vehicle and a powertrain for an electric vehicle are disclosed. According to an embodiment, an electric vehicle includes a suspension system, a seat, a steering system, an electric motor and a battery pack. The battery pack includes one or more battery modules to provide power to the electric motor and a battery enclosure housing the one or more battery modules. The battery enclosure is a structural element of the electric vehicle to receive loads from at least two of the suspension system, the seat and the steering system.

An electric vehicle and a powertrain for an electric vehicle are disclosed. According to an embodiment, an electric vehicle includes a steering system with a steering column, and a battery pack having a battery enclosure and a plurality of battery modules housed within the battery enclosure. The battery enclosure defines a slot that extends from at least a top surface of the battery enclosure to receive the steering column.

An electric vehicle and a powertrain for an electric vehicle are disclosed. According to an embodiment, an electric vehicle includes a chassis with a rear portion and a front portion, and a suspension system having a front suspension coupled to the front portion of the chassis and a rear suspension coupled to the rear portion of the chassis. A battery pack is mounted at least partially on top of the rear portion of the chassis and an electric motor, powered by the battery pack, is mounted below the battery pack and between the rear portion of the chassis and a front end of the electric vehicle.

Various embodiments provide for a bike-supported communication network that manages and facilitates communications between components of an electric bicycle and a wireless network. In some embodiments, the systems and methods provide a bike-supported communication device that is integrated into a bike lock, lock, or lock assembly.