The present application relates to the field of electric scooter, and more particularly to a foldable electric scooter and a manufacture method of the same. Electric scooter 10 includes front wheel assembly 20, front fork assembly 30, headset assembly 50, handlebar assembly 60, throttle controller 70, gooseneck assembly 80, main body assembly 90, standing platform 100, drive train assembly 110, and rear wheel assembly 120. One purpose of the present application is to provide an electric scooter that has a flexible design, whose rear tire revolves inwardly and handlebar assembly collapses to minimize the whole volume of the electric scooter for facilitating transportation and storage. Another purpose of the present invention is to provide a method of manufacturing the electric scooter.

A linkage front wheel suspension system for two-wheeled vehicles comprising of a control arm hinged with the body of the vehicle, fork member, and steering member. An upper ball joint connects said steering member to the body of the vehicle and a lower ball joint connects the outer end of said control arm with said fork member. Fork member extends upwards and rearwards from said lower ball joint to hinge with said steering member. Steering member extends upwards and forwards from this pivot point to said upper ball joint. A method of steering control connects with said steering member. Means of springing/dampening connects with at least one of the said steering/suspension members. Said suspension system can utilize a lighter design of main frame, provide superior road-holding and can have reduced compression when front wheel braking.

A linkage front wheel suspension system for two-wheeled vehicles comprising of a control arm hinged with the body of the vehicle, fork member, and steering member. An upper ball joint connects said steering member to the body of the vehicle and a lower ball joint connects the outer end of said control arm with said fork member. Fork member extends upwards and rearwards from said lower ball joint to hinge with said steering member. Steering member extends upwards and forwards from this pivot point to said upper ball joint. A method of steering control connects with said steering member. Means of springing/dampening connects with at least one of the said steering/suspension members. Said suspension system can utilize a lighter design of main frame, provide superior road-holding and can have reduced compression when front wheel braking.

A motorcycle suspension comprising a fork having a steering bar suitable for connecting mechanically to a steering mechanism of a motorcycle, an oscillating bar having a first end at which it forms a junction with said steering bar, and a second end at which it connects to a support which houses a rotation pin of an associable wheel so as to turn, said rotation pin defining a rotation axis for the wheel itself. The suspension comprises a shock absorber unit which extends from an attachment head, at which it is mechanically connected to the steering bar, to an attachment foot, at which it is connected to the support. Advantageously, the shock absorber unit, at the attachment foot, connects to the support by the interposition of mechanical coupling means having a hinge axis which is contained in a plane perpendicular to the rotation axis of the wheel.

A motorcycle suspension comprising a fork having a steering bar suitable for connecting mechanically to a steering mechanism of a motorcycle, an oscillating bar having a first end at which it forms a junction with said steering bar, and a second end at which it connects to a support which houses a rotation pin of an associable wheel so as to turn, said rotation pin defining a rotation axis for the wheel itself. The suspension comprises a shock absorber unit which extends from an attachment head, at which it is mechanically connected to the steering bar, to an attachment foot, at which it is connected to the support. Advantageously, the shock absorber unit, at the attachment foot, connects to the support by the interposition of mechanical coupling means having a hinge axis which is contained in a plane perpendicular to the rotation axis of the wheel.

The present invention is intended to provide a tiltable bicycle front suspension system with shock absorption and composite steering, including a suspension structure and a steering structure, where the suspension structure includes a vehicle body and symmetrically-arranged front wheels; each front wheel is provided with a steering knuckle; a fork arm fixing frame is movably disposed at one side, far away from the front wheel, of the steering knuckle; an upper fork arm and a lower fork arm, which are arranged in pair, are disposed between the fork arm fixing frame and the vehicle body; an alignment spring is disposed between the upper fork arm and the lower fork arm; and a main shock absorbing spring is disposed between the lower fork arms. The system provided by the present invention can make the driving more accurate and more labor-saving.

The present invention is intended to provide a tiltable bicycle front suspension system with shock absorption and composite steering, including a suspension structure and a steering structure, where the suspension structure includes a vehicle body and symmetrically-arranged front wheels; each front wheel is provided with a steering knuckle; a fork arm fixing frame is movably disposed at one side, far away from the front wheel, of the steering knuckle; an upper fork arm and a lower fork arm, which are arranged in pair, are disposed between the fork arm fixing frame and the vehicle body; an alignment spring is disposed between the upper fork arm and the lower fork arm; and a main shock absorbing spring is disposed between the lower fork arms. The system provided by the present invention can make the driving more accurate and more labor-saving.

An electric vehicle (e.g., a tricycle, or a car) includes a frame portion having a first side and a second side. A first rear wheel is disposed rearward relative to the frame portion at the first side. A second rear wheel is disposed rearward relative to the frame portion at the second side, the second rear wheel being spaced from the first rear wheel with a wheel base width therebetween (e.g., in a range from 260 mm to 900 mm). A first swing arm is pivotably coupled to the frame portion at the first side and operably coupled to the first rear wheel and extending between the frame portion and the first rear wheel. A second swing arm pivotably coupled to the frame portion at the second side and operably coupled to the second rear wheel and extending between the frame portion and the second rear wheel.

The present invention provides a control system of a straddle type vehicle, estimating a second force acting on a rear wheel of the straddle type vehicle from an obstacle, on a basis of a first force acting on a front wheel of the straddle type vehicle from the obstacle; and controlling a rear suspension mechanism configured to support the rear wheel, on a basis of an estimation result, when the rear wheel is affected by the obstacle, wherein a force converted from the first force according to a difference in a state of the straddle type vehicle between when the front wheel is affected by the obstacle and when the rear wheel is affected by the obstacle is estimated as the second force.

A motor control method includes a determination step of determining whether a contact portion exists, which is a portion where the screw and the nut member are in contact with each other at a location different from a mating portion, when the motor is energized to move the nut member in a first direction, and when the contact portion is determined to exist in the determination step, a return step of energizing the motor to move the nut member in a second direction opposite to the first direction until the contact portion no longer exists.