A hub assembly, including: an axle with an axial opening; a hub shell; a frame, including first and second frame members with respective first and second retaining surfaces; and a control shaft within the axial opening. The control shaft includes: an engagement end; a clamping end with an enlarged head portion with an inwardly facing grip face; a shank extending between the engagement and clamping ends; first and second engagement surfaces proximal the engagement and clamping ends respectively. The second frame member includes an open slot to receive the control shaft. The control shaft is axially displaceable between: a retracted position radially disengaged from both first and second frame members; and a pre-engaged position, where the first and second engagement surfaces are overlapping the first and second retaining surfaces in respective first and second radial engagements to radially retain the hub assembly with the first and second frame members.

An axle connector adapter assembly, including: a frame element with a first frame member; an axle extending along an axial axis and including an engagement end with a first threadable portion; and an adapter with a second threaded portion for threadable engagement with the first threadable portion. The first frame member includes an open slot with an open entrance portion, a closed terminus region, slot sidewalls extending between the open entrance portion and the closed terminus region, a slot axis, an axially outward facing first outboard face, and an axially inward facing first inboard face. The adapter is assembled to the first frame member to include a rotationally keyed engagement between the adapter and the first frame member to limit rotation of the threaded portion relative to the first frame member about the axial axis. The adapter is preferably axially retained to the first frame member.

The present disclosure discloses a folding device and a scooter having the folding device. The folding device includes: a first folding seat and a second folding seat arranged opposite to each other and rotatably coupled to each other, the first folding seat being located above the second folding seat; a first locking assembly rotatably coupled to the second folding seat, the first locking assembly being rotatable between a first position and a second position; a second locking assembly configured to clamp or release the first folding seat and the first locking assembly; and a reset member coupled to at least one of the first locking assembly and the second locking assembly.

A three-dimensional folding frame is disclosed including a first pivot portion for providing a front folding wheel frame with movable folding; a second pivot portion for providing a rear folding wheel frame with movable folding; a third pivot portion for providing a handlebar vertical rod with rotatable folding; and a fourth pivot portion for providing a crossbar with rotatable folding. The crossbar includes a first folding arm and a second folding arm; the first folding arm is movably connected to the front folding wheel frame by means of the first pivot portion; the front folding wheel frame rotates about the first pivot portion and can move relative to the first folding arm; the second folding arm is movably connected to the rear folding wheel frame by means of the second pivot portion.

A device includes a battery case (42) that stores a battery (62A or 62B), a lock mechanism (133) that is capable of fixing and holding the stored battery (62A or 62B) in the battery case (42), and an operation member (44) that is capable of performing switching operation of the lock mechanism (133) between a battery-fixed state and a non-battery-fixed state. The lock mechanism (133) includes a movable block (160) which is supported by the battery case (42) in a displaceable manner. The movable block (160) has a battery restriction portion (160b or 160c) which restricts displacement of the battery (62A or 62B) in a separation direction in a state of being displaced to a battery fixing position, and a holding force receiving portion (160d) which receives a holding force for maintaining the movable block (160) at the battery fixing position from the operation member (44) in a state where the operation member (44) is operated within a predetermined positional range.

A quick assembly bicycle stem structure includes a front fork stem, a handlebar stem having a zigzag-shaped slot opening formed at a lower end thereof that is received in an upper section of the front fork stem, the zigzag-shaped slot opening including a first vertical slot and a second vertical slot that are spaced apart in relation to one another, a pin bolt coupled to the front fork stem and extending into the zigzag-shaped slot opening of the handlebar stem, the pin bolt configured to travel within the zigzag-shaped slot opening and to enter the second vertical slot from the first vertical slot when the front fork stem is rotated relative to the handlebar stem, and a nut assembly received over the handlebar stem and configured to threadedly engage the upper section of the front fork stem.

A personal transport vehicle is provided, which includes a front wheel assembly having a front rim and a front tire seated on the front rim, and a rear wheel assembly having a rear rim and a rear tire seated on the rear rim. The vehicle also includes a motor disposed within the rear rim of the rear wheel assembly and coupled to a mount of the rear rim, where the motor is configured to rotate the rear tire to cause movement of the personal transport vehicle. The vehicle further includes a frame coupled to the front wheel assembly and to the motor disposed within the rear wheel assembly, and a steering arm coupled to the front wheel assembly within the front rim for controlling movement of the front tire for steering the personal transport vehicle.

This Tandem bicycle design describes a reduced linear dimension, whereby the inherent polar integrity of the tandem structure is reduced.

Due to the close proximity of the cyclist, balance and coordination is more rapid and spontaneous.

The gear construct is comprised of a system of three cranking sprockets, closely arranged in a forward (one) and rearward pair. The forward and rear gears closest to the bicycle frame; coupled to a timing chain, functions as the timing mechanism. The rearward outer gear functions as the driving gear connected by a power chain to the rear wheel sprocket(s).

The handlebars required by the rear cyclist necessitates an innovative base connected to the bicycle frame located behind the front cyclist seat collar.

A locking mechanism on the handlebar coupler allows deployment of handlebars from retracted, to the riding position.

A mount for an auxiliary handlebar, the mount comprising: a stem; a fastener configured to receive the auxiliary handlebar; a clamp configured to secure the mount to a primary handlebar; and a clamp lock comprising: a linkage rotatably connected to the stem; and a cam lever rotatably connected to the linkage; wherein the clamp lock is configured to selectively lock the clamp.

A quick release structure includes a rod member, an arm member, a restriction member, and a pushing means. The rod member includes a toothed member having a plurality of rows of first teeth arranged spacedly thereon. The arm member has a plurality of rows of second teeth arranged spacedly on its inner peripheral surface. The arm member is sleeved on the toothed member and is axially slidable. The restriction member is disposed on the rod member. The pushing means is arranged between the rod member and the arm member to make the rows of first teeth and the rows of second teeth being engaged normally. When the arm member is moved axially to a rotation position, the rows of first teeth and the rows of second teeth are staggered and aligned alternately so that the arm member is rotatable relative to the rod member.