A motorcycle front suspension includes a fork having a steering member mechanically connected or adapted to be connected to a handlebar of a motorcycle, and an oscillating arm having a first end and a second end. The motorcycle front suspension also includes a rod having a first end, pivotally joined to the steering member, and having a second end pivotally joined to the first end of the oscillating arm, and a shock absorber group, including a spring and a damper, the shock absorber group extending from an attachment head, mechanically connected to the steering member, to an attachment foot, pivotally joined to the second end of the oscillating arm.

A motorcycle front suspension includes a fork having a steering member mechanically connected or adapted to be connected to a handlebar of a motorcycle, and an oscillating arm having a first end and a second end. The motorcycle front suspension also includes a rod having a first end, pivotally joined to the steering member, and having a second end pivotally joined to the first end of the oscillating arm, and a shock absorber group, including a spring and a damper, the shock absorber group extending from an attachment head, mechanically connected to the steering member, to an attachment foot, pivotally joined to the second end of the oscillating arm.

A traveling vehicle includes a vehicle body, a left swing part, a right swing part, and an interlocking link mechanism. The left swing part and the right swing part are supported on the vehicle body so as to be swingable in the up-down direction, respectively. A left support part supporting a left front wheel is provided on a front part of the left swing part so as to be rotatable about a left steering shaft. A right support part supporting a right front wheel is provided at a front part of the right swing part so as to be rotatable about a right steering shaft. The interlocking link mechanism rotates one of the left support part and the right support part in conjunction with the other. The interlocking link mechanism is provided between the left support part and the right support part.

A traveling vehicle includes a vehicle body, a left swing part, a right swing part, and an interlocking link mechanism. The left swing part and the right swing part are supported on the vehicle body so as to be swingable in the up-down direction, respectively. A left support part supporting a left front wheel is provided on a front part of the left swing part so as to be rotatable about a left steering shaft. A right support part supporting a right front wheel is provided at a front part of the right swing part so as to be rotatable about a right steering shaft. The interlocking link mechanism rotates one of the left support part and the right support part in conjunction with the other. The interlocking link mechanism is provided between the left support part and the right support part.

A bicycle comprising a frame; a handlebar assembly attached to an upper steering tube of the frame in such a way that at least the relative rotation between the two with respect to an upper axis is allowed, but the relative displacements between both in the directions perpendicular to the upper axis are restricted; a fork attached to a lower steering tube of the frame so that it has the same degrees of freedom relative to the lower axis between the fork and the lower steering tube as the degrees of freedom relative to the upper axis between the handlebar assembly and the upper steering tube; and a means for rotation transmission for transmitting at least partially a rotation of the handlebar assembly with respect to the upper tube into a rotation of the fork with respect to the lower steering tube.

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.

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.

A shock absorber and a transportation tool. The shock absorber includes a first rotating arm; a second rotating arm pivotally coupled to the first rotating arm; and a torsion bar spring having a first end coupled to the first rotating arm and a second end coupled to the second rotating arm, wherein an included angle between the first rotating arm and the rotating arm has a set value. The shock absorber has a simple structure and good shock absorption effect and adjustable stroke.

A trailing link suspension for a bicycle includes at least one fork arm. The fork arm including a proximal end and a distal end defining a non-linear portion disposed between generally straight portions such that the distal end is at an angle of approximately 70°˜90° relative to the proximal end. The fork arm is rotatably fixed to a bicycle frame. The suspension includes a shock absorber comprising a first end and a second end, defining a length therebetween. The first end of the shock absorber rotatably fixed to the non-linear portion. The suspension includes a link including a first end and a second end defining a length therebetween. The second end of the shock absorber is rotatably fixed to the link, the first end of the link fixed to the second end of the fork arm and the second end of the link fixed to an axle.

A trailing link suspension for a bicycle includes at least one fork arm. The fork arm including a proximal end and a distal end defining a non-linear portion disposed between generally straight portions such that the distal end is at an angle of approximately 70°˜90° relative to the proximal end. The fork arm is rotatably fixed to a bicycle frame. The suspension includes a shock absorber comprising a first end and a second end, defining a length therebetween. The first end of the shock absorber rotatably fixed to the non-linear portion. The suspension includes a link including a first end and a second end defining a length therebetween. The second end of the shock absorber is rotatably fixed to the link, the first end of the link fixed to the second end of the fork arm and the second end of the link fixed to an axle.