A front wheel pivoting assembly for a bicycle allowing for a front wheel of the bicycle to be articulated includes a bracket, a secondary head tube, a pivot unit, and a controller. The bracket and controller are mountable to an integral head tube and a handlebar, respectively, of a frame of a bicycle lacking a front fork assembly and a handlebar stem. Lower and upper ends of the secondary head tube engage the front fork assembly and the handlebar stem, respectively. A hinge is engaged to and extends between the bracket and the secondary head tube. The pivot unit is engaged to the bracket and is operationally engaged to the secondary head tube, allowing for reversible positioning of the secondary head tube. The controller selectively actuates the pivot unit, allowing a user to pull back and to push forward on the handlebar to extend and retract, respectively, the front wheel.

A front wheel pivoting assembly for a bicycle allowing for a front wheel of the bicycle to be articulated includes a bracket, a secondary head tube, a pivot unit, and a controller. The bracket and controller are mountable to an integral head tube and a handlebar, respectively, of a frame of a bicycle lacking a front fork assembly and a handlebar stem. Lower and upper ends of the secondary head tube engage the front fork assembly and the handlebar stem, respectively. A hinge is engaged to and extends between the bracket and the secondary head tube. The pivot unit is engaged to the bracket and is operationally engaged to the secondary head tube, allowing for reversible positioning of the secondary head tube. The controller selectively actuates the pivot unit, allowing a user to pull back and to push forward on the handlebar to extend and retract, respectively, the front wheel.

A front wheel pivoting assembly for a bicycle allowing for a front wheel of the bicycle to be articulated includes a bracket, a secondary head tube, a pivot unit, and a controller. The bracket and controller are mountable to an integral head tube and a handlebar, respectively, of a frame of a bicycle lacking a front fork assembly and a handlebar stem. Lower and upper ends of the secondary head tube engage the front fork assembly and the handlebar stem, respectively. A hinge is engaged to and extends between the bracket and the secondary head tube. The pivot unit is engaged to the bracket and is operationally engaged to the secondary head tube, allowing for reversible positioning of the secondary head tube. The controller selectively actuates the pivot unit, allowing a user to pull back and to push forward on the handlebar to extend and retract, respectively, the front wheel.

A front wheel pivoting assembly for a bicycle allowing for a front wheel of the bicycle to be articulated includes a bracket, a secondary head tube, a pivot unit, and a controller. The bracket and controller are mountable to an integral head tube and a handlebar, respectively, of a frame of a bicycle lacking a front fork assembly and a handlebar stem. Lower and upper ends of the secondary head tube engage the front fork assembly and the handlebar stem, respectively. A hinge is engaged to and extends between the bracket and the secondary head tube. The pivot unit is engaged to the bracket and is operationally engaged to the secondary head tube, allowing for reversible positioning of the secondary head tube. The controller selectively actuates the pivot unit, allowing a user to pull back and to push forward on the handlebar to extend and retract, respectively, the front wheel.

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 damping mechanism and a vehicle are provided. The damping mechanism includes: a spindle; an elastic cushion assembly used to couple the spindle and the vehicle body; a coupling arm having a first end used to be fixedly coupled to an axle of the wheel and a second end pivotally coupled to the spindle; and a locking assembly provided between the coupling arm and the spindle and used to switch the coupling arm and the spindle between at least two locking states and a unlocking state. In the unlocking state, the coupling arm is rotatable, and in the locking states, the coupling arm is locked; in each of the locking states, the coupling arm is in different locking positions relative to the spindle; and when the coupling arm is in different locking positions, the coupling arm is at different angles to a horizontal plane.

A frame of a vehicle includes a front fork unit pivotably connected to a head tube of a vehicle body mechanism, a crank axle disposed on the front fork unit for two front-wheel cranks to be pivoted thereon. Two front wheels are pivotably disposed on the cranks, respectively. A front-wheel counteracting mechanism is pivotably connected between each of the cranks and the front fork unit to transmit an impact force to the cranks so as to cause opposite upward and downward movements of the front wheels to thereby keep the front wheels in contact with the ground and to render movement of the vehicle steady and safe.

A front suspension (4) of the telescopic type with anti-dive effect, comprising at least one sheath (32) and at least one stem (36), housed and guided telescopically inside said sheath (32) according to a direction of the fork axis Z-Z, the suspension (4) comprising a foot (44) associated to the sheath (32) or to the stem (36) that rotatably supports a wheel spindle (44) of an associable front wheel (12) defining a rotation axis X-X, a braking device (52) for the associable front wheel (12), having a support (56) rotatably mounted with respect to the wheel spindle (44) so as to be able to oscillate about the rotation axis X-X. Between the support (56) of the braking device (52) and the foot (44) of the suspension (4) are interposed transfer means (64) of the braking force, exerted by the braking device (52), on an element (32, 36) between the sheath (32) and the stem (36) that does not support the foot (44). Said transfer means (64) comprise a cam (68) hinged to the foot (44) in a first hinge point (72), kinematically connected to the braking means, and mechanically connected to a portion of the suspension (4) integral with the element (32, 36) between the sheath (32) and the stem (36) that does not support (56) the foot (44) so as to transfer thereto, in the direction of the fork axis Z-Z, a part of the braking force.

A front fork for a motorcycle includes a bottom portion configured to engage an axle of a front wheel, the bottom portion having a center line at an angle relative to vertical. An angled middle portion extends from a top of the bottom portion at an angle relative to vertical that is larger than the bottom portion center line angle relative to vertical. A steering head attachment extends from a top of the angled middle portion.

A front fork for a motorcycle includes a bottom portion configured to engage an axle of a front wheel, the bottom portion having a center line at an angle relative to vertical. An angled middle portion extends from a top of the bottom portion at an angle relative to vertical that is larger than the bottom portion center line angle relative to vertical. A steering head attachment extends from a top of the angled middle portion.