Some embodiments are directed to a foldable vehicle for use as a vehicle if being unfolded, and for use as a trolley if being folded. The vehicle in its folded configuration may also be placed in an upright parking position. The vehicle includes a first side frame coupled to a first wheel, a second side frame coupled to a second wheel and a coupling frame. The coupling frame includes a hinge joint between a first end and a second end of the coupling frame. The first end is hinged to the first side frame and the second end is hinged to the second side frame. When the first wheel translates towards the second wheel, the hinge joint moves from one side of the second wheel to the other side of the second wheel.

Some embodiments are directed to a foldable vehicle for use as a vehicle if being unfolded, and for use as a trolley if being folded. The vehicle in its folded configuration may also be placed in an upright parking position. The vehicle includes a first side frame coupled to a first wheel, a second side frame coupled to a second wheel and a coupling frame. The coupling frame includes a hinge joint between a first end and a second end of the coupling frame. The first end is hinged to the first side frame and the second end is hinged to the second side frame. When the first wheel translates towards the second wheel, the hinge joint moves from one side of the second wheel to the other side of the second wheel.

A frame for an electric vehicle (10) comprising: a head pipe (12) and at least two rear tubes (13) extending rearwardly from the head pipe (12); an electric battery module (24) used as a power source for powering the electric vehicle comprising at least one battery located below rear portion (13B) of said rear tubes (13); a protective frame structure (23) for securely mounting said battery module (24); wherein said protective frame structure (23) is fixed to said rear tubes (13) of said frame and provided substantially centrally and downwardly of said vehicle (10).

A frame for an electric vehicle (10) comprising: a head pipe (12) and at least two rear tubes (13) extending rearwardly from the head pipe (12); an electric battery module (24) used as a power source for powering the electric vehicle comprising at least one battery located below rear portion (13B) of said rear tubes (13); a protective frame structure (23) for securely mounting said battery module (24); wherein said protective frame structure (23) is fixed to said rear tubes (13) of said frame and provided substantially centrally and downwardly of said vehicle (10).

An adjustable coupling device for use with a conventional wheelchair and a conventional vehicle. The wheelchair has a transverse foot support with a length. The vehicle has a support deck with a width. The coupling device is removably secured to the support deck. The coupling device is formed with a rectangular base plate. Upstanding components extending upwardly from the base plate are configured to receive and retain the transverse foot support. The width of the base plate is less than the length of the transverse foot support. The base plate has two spaced holes laterally spaced by a distance greater than the width of the support deck. A mechanism has a central section beneath the support deck and has upstanding ends extendable upwardly through the holes in the base plate. The mechanism is adapted to hold the base plate to the support deck.

A battery compartment, a battery compartment assembly and an electric scooter are provided. The battery compartment is used for an electric scooter, and includes a compartment body and a limiting flange. The electric scooter includes a frame with an opening, and the opening runs through the frame in an up-down direction. The compartment body is configured to penetrate through the opening, and the limiting flange is arranged to an outer side wall of the compartment body and configured to abut against the frame to prevent the compartment body from falling out of the opening downwards.

A battery compartment, a battery compartment assembly and an electric scooter are provided. The battery compartment is used for an electric scooter, and includes a compartment body and a limiting flange. The electric scooter includes a frame with an opening, and the opening runs through the frame in an up-down direction. The compartment body is configured to penetrate through the opening, and the limiting flange is arranged to an outer side wall of the compartment body and configured to abut against the frame to prevent the compartment body from falling out of the opening downwards.

The present utility model discloses a two wheel electric motorized cycle frame incorporating a case-free battery, including a frame main body with a battery containment framework disposed on the frame main body. The battery is contained by the battery containment framework. At least one side of the framework is removable to facilitate replacing the battery, and partition boards are inserted in the framework to separate out a protective cavity for electrical connections. According to the present utility model, the battery is placed in the battery containment framework, so that a battery case is omitted. The battery is safely fixed in the framework, and one side of the framework is removable to facilitate replacing the battery. Furthermore, the partition boards are disposed in the framework to separate out the protective cavity for electrical connections of battery cables, thereby solving the problem that the battery cables are exposed to the outside and cannot be effectively accommodated due to replacement of an enclosed battery case with an open framework.

The present utility model discloses a two wheel electric motorized cycle frame incorporating a case-free battery, including a frame main body with a battery containment framework disposed on the frame main body. The battery is contained by the battery containment framework. At least one side of the framework is removable to facilitate replacing the battery, and partition boards are inserted in the framework to separate out a protective cavity for electrical connections. According to the present utility model, the battery is placed in the battery containment framework, so that a battery case is omitted. The battery is safely fixed in the framework, and one side of the framework is removable to facilitate replacing the battery. Furthermore, the partition boards are disposed in the framework to separate out the protective cavity for electrical connections of battery cables, thereby solving the problem that the battery cables are exposed to the outside and cannot be effectively accommodated due to replacement of an enclosed battery case with an open framework.

A self-balancing scooter and a main frame assembly thereof are provided. The self-balancing scooter includes a first main frame and a cooperated second main frame. The first main frame includes a first connecting portion, the first connecting portion includes a first end surface, the first end surface defines a guide hole, and the guide hole is positioned between a center and an edge of the first end surface. The second main frame includes a second connecting portion, the second connecting portion includes a second end surface corresponding to the first end surface of the first connecting portion, the second end surface defines a conduit, the conduit is positioned between a center and an edge of the second end surface, the conduit is accommodated in the guide hole, and the first connecting portion is assembled and connected to the second connecting portion.