A bicycle has a bicycle frame, two handle bars, and a clamping assembly. The bicycle frame has a front fork having a steerer tube mounted within a head tube of the bicycle frame and a handle mount fastened to the steerer tube and having two receiving tubes longitudinally disposed at two sides of the head tube, respectively. The two handle bars are rotatably mounted to the two receiving tubes, respectively, and each handle bar has a first section inserted inside a corresponding one of the two receiving tubes and a second section integrally fixed to the first section. The clamping assembly has two clamping units respectively mounted around the two receiving tubes and an operating unit connected to the two clamping units and being configured to abut the two clamping units for respectively clamping the two receiving tubes.

A bicycle has a bicycle frame, two handle bars, and a clamping assembly. The bicycle frame has a front fork having a steerer tube mounted within a head tube of the bicycle frame and a handle mount fastened to the steerer tube and having two receiving tubes longitudinally disposed at two sides of the head tube, respectively. The two handle bars are rotatably mounted to the two receiving tubes, respectively, and each handle bar has a first section inserted inside a corresponding one of the two receiving tubes and a second section integrally fixed to the first section. The clamping assembly has two clamping units respectively mounted around the two receiving tubes and an operating unit connected to the two clamping units and being configured to abut the two clamping units for respectively clamping the two receiving tubes.

A steering assembly for a vehicle includes a track pivotable about a steering axis, a slider slidably connected to the track, a handlebar connected to the slider, a lock actuator movable between a locked position and an unlocked position, and a rocker operatively connected to the lock actuator. The rocker is pivotable about a rocking axis relative to the slider. The handlebar, the slider, the lock actuator and the rocker are pivotable about the steering axis with the track. In the unlocked position of the lock actuator, the rocker and the handlebar are slidable along the track with the slider. In the locked position of the lock actuator, the rocker presses the slider against the track and thereby locks the slider, the rocker and the handlebar in position relative to the track.

A steering assembly for a vehicle includes a track pivotable about a steering axis, a slider slidably connected to the track, a handlebar connected to the slider, a lock actuator movable between a locked position and an unlocked position, and a rocker operatively connected to the lock actuator. The rocker is pivotable about a rocking axis relative to the slider. The handlebar, the slider, the lock actuator and the rocker are pivotable about the steering axis with the track. In the unlocked position of the lock actuator, the rocker and the handlebar are slidable along the track with the slider. In the locked position of the lock actuator, the rocker presses the slider against the track and thereby locks the slider, the rocker and the handlebar in position relative to the track.

A handlebar assembly for a motorcycle has a cylindrical connecting rod having opposing first and second ends, a first end joint connected to the first end, and a second end joint connected to the second end, with each end joint having a vertical channel. The assembly also includes two handlebars, each handlebar having a vertical bar that has a lower end that is removably secured inside the vertical channel of one of the end joints.

A handlebar assembly for a motorcycle has a cylindrical connecting rod having opposing first and second ends, a first end joint connected to the first end, and a second end joint connected to the second end, with each end joint having a vertical channel. The assembly also includes two handlebars, each handlebar having a vertical bar that has a lower end that is removably secured inside the vertical channel of one of the end joints.

A handle device may include a handle upper region, a handle lower region disposed below the handle upper region, and a shaft member configured to penetrate the handle upper region and the handle lower region in a region in which the handle upper region and the handle lower region face each other. A screw thread region provided on an outer surface of the shaft member may be configured to be screw-coupled to the handle upper region and/or the handle lower region at a portion where the shaft member penetrates the handle upper region and the handle lower region. The handle upper region may include an upper concave-convex part, and the handle lower region may include a lower concave-convex part. The lower concave-convex part may have a shape corresponding to the upper concave-convex part so that the handle lower region is able to contact the handle upper region.

A handle device may include a handle upper region, a handle lower region disposed below the handle upper region, and a shaft member configured to penetrate the handle upper region and the handle lower region in a region in which the handle upper region and the handle lower region face each other. A screw thread region provided on an outer surface of the shaft member may be configured to be screw-coupled to the handle upper region and/or the handle lower region at a portion where the shaft member penetrates the handle upper region and the handle lower region. The handle upper region may include an upper concave-convex part, and the handle lower region may include a lower concave-convex part. The lower concave-convex part may have a shape corresponding to the upper concave-convex part so that the handle lower region is able to contact the handle upper region.

A rotatable folding bicycle stem comprises a stem rotatably mounted on the standpipe with defining a stem rotating axis. An upper end of the stem terminates in a forwardly projecting O-shaped loop. A distance between the stem rotating axis to a center of the O-shaped loop is smaller than a distance between the standpipe rotating axis to the center of the O-shaped loop. Compared with the conventional folding bicycle, a space between the handlebar and the frame could be reduced or became smaller by utilizing the present invention. The present invention is able to provide a smaller folded size of the folding bicycle for facilitating storage by users and benefiting for being stacked or compacted more tightly when loading in a cargo car of a container for delivery. The present invention could reduce a shipping cost for a single bike and increase a loading quantity in single container.

A rotatable folding bicycle stem comprises a stem rotatably mounted on the standpipe with defining a stem rotating axis. An upper end of the stem terminates in a forwardly projecting O-shaped loop. A distance between the stem rotating axis to a center of the O-shaped loop is smaller than a distance between the standpipe rotating axis to the center of the O-shaped loop. Compared with the conventional folding bicycle, a space between the handlebar and the frame could be reduced or became smaller by utilizing the present invention. The present invention is able to provide a smaller folded size of the folding bicycle for facilitating storage by users and benefiting for being stacked or compacted more tightly when loading in a cargo car of a container for delivery. The present invention could reduce a shipping cost for a single bike and increase a loading quantity in single container.