The labor-saving foldable pedal includes a footboard and a labor-saving rod. The labor-saving rod has a first end configured to be transversely hingedly connected to a bicycle driving crank, and a second end longitudinally hingedly connected to the footboard, and bearing limiting structures corresponding to each other are respectively provided at the second end of the labor-saving rod and a longitudinal hinge end of the footboard.

An apparatus includes a first component having with a first coupling surface and a first axial aperture therethrough. The first component has an axial recess in the first coupling surface. The apparatus further includes a second component having a second coupling surface and a second axial aperture therethrough, and the second component has an axial protrusion extending from the second coupling surface. The axial recess of the first component and the axial protrusion of the second component selectively engage to radially lock the first component relative to the second component and align the first and second apertures upon engagement with each other. The first and second apertures selectively receive a bicycle wheel axle.

A system includes a computer in a bicycle, and the computer has a processor and a memory. The computer is programmed to determine user characteristics for a user of the bicycle, with the user characteristics including pedaling force and pedaling cadence; calculate a power contribution at least in part according to the user characteristics; select one or more operational parameters for a bicycle motor according to the power contribution; and apply the operational parameters to operation of the bicycle motor.

The present invention relates to a vehicle with foldable double-wheel assembly having two states, one first state as a pedaled tricycle and a second state as a running bike, comprising: a frame; a single-wheel assembly; two pedals for driving the steering wheel to roll; a handlebar assembly matching with said single-wheel assembly for control steering; and a double-wheel assembly.

A foldable electric vehicle includes a handlebar assembly, a steering pole assembly, a pedal assembly, a driving device and a wheel assembly; the handlebar assembly includes a handlebar head component and a handle component, and a first folding component is provided between the handlebar head component and the handle component; the steering pole assembly includes a handlebar connecting part, a wheel connecting part and an intermediate connecting part, a second folding component is provided between the handlebar connecting part and the intermediate connecting part, and is also provided between the intermediate connecting part and the wheel connecting part; and the pedal assembly includes a front pedal frame and a rear pedal frame, and a third folding component is provided between the front pedal frame and the rear pedal frame.

A bicycle for driving downhill with a front wheel region, a rear wheel region, and a support rod which couples the front wheel region and the rear wheel region, the support rod having at least one hinge for unfolding and folding and has a front rod portion between the front wheel region and the hinge and a rear rod portion between the rear wheel region and the hinge, a foot rod is pivotably mounted with a coupling portion to the support rod and has a footrest region for resting feet of a user of the bicycle, and the bicycle includes a tension rope system having a first rope tensioning portion and a second rope tensioning portion, wherein the first rope tensioning portion is coupled to the foot portion and the front rod portion, and the second rope tensioning portion is coupled to the foot portion and the rear rod portion.

The labor-saving foldable pedal includes a footboard and a labor-saving rod. The labor-saving rod has a first end configured to be transversely hingedly connected to a bicycle driving crank, and a second end longitudinally hingedly connected to the footboard, and bearing limiting structures corresponding to each other are respectively provided at the second end of the labor-saving rod and a longitudinal hinge end of the footboard.