A pedal unit attachable/detachable training bicycle that easily attach/detach a chain and a pedal unit to/from a training bicycle that has a seat stay. The pedal unit attachable/detachable training bicycle includes a bicycle frame having a receiving member provided at bottom of a seat tube to connect a pedal unit. The pedal unit, which is configured to detachably attach to the receiving member. A chain threaded between the pedal unit and a rear wheel. The bicycle frame is configured to enable a seat stay on side of the chain wheel to be freely attached to and detached from the bicycle frame.

A two-wheeled vehicle includes a frame assembly, a plurality of ground-engaging members for supporting the frame assembly, and a cooling assembly positioned below a head portion of the frame assembly and intermediate vertically-extending frame tubes of the frame assembly. A lower end of the cooling assembly is coupled to a lower end of the vertically-extending frame tubes, and an upper end of the cooling assembly is frictionally retained at an upper end of each of the vertically-extending frame tubes.

Provided is a seat frame for a saddled vehicle capable of increasing the coupling rigidity at the separable rear end and having aesthetic aspect. A seat frame of a vehicle body frame includes a front part fixed to the vehicle body frame and a rear part that can be disconnected from the front part, the front part and the rear part being separated at a rear part of the vehicle body. The front part and the rear part are fixed with a fastening member that engages from the inside of the vehicle width direction. The front part has a hollow rear end, and the rear part includes a solid engagement part at the front end. The fastening member as a bolt penetrates through the lateral wall at the rear end to be screwed with the engagement part inserted into the rear end. The rear part includes the engagement part and a pipe member to be connected to a rear part of the engagement part.

A motorized and controllable wheel system for a non-motorized stander is disclosed. Micro-controllers are programmed to be capable of acquiring and processing multiple inputs from the user and therapist and controlling the motors. Additional sensors are implemented in order to enhance safety and provide some device autonomy with the goal of providing a device that improves the mobility, autonomy, and educational experience of children.

A motorized and controllable wheel system for a non-motorized stander is disclosed. Micro-controllers are programmed to be capable of acquiring and processing multiple inputs from the user and therapist and controlling the motors. Additional sensors are implemented in order to enhance safety and provide some device autonomy with the goal of providing a device that improves the mobility, autonomy, and educational experience of children.

A straddle vehicle of the present invention includes: a vehicle body frame member; a rotatably supporting member supporting a front wheel; a support arm supporting the rotatably supporting member, the support arm extending rearward from the rotatably supporting member; a pair of upper and lower link members pivotally connected to the support arm at two locations on a rear portion of the support arm at least on one side of the vehicle body in a vehicle width direction, the two locations being spaced in the upward-downward direction, the pair of upper and lower link members extending rearward from the support arm, each of the link members having a rear portion pivotally connected to the vehicle body frame member; a handle; and a handle supporting member removably coupled to the vehicle body frame member and supporting the handle.

A straddle vehicle of the present invention includes: a vehicle body frame member; a rotatably supporting member supporting a front wheel; a support arm supporting the rotatably supporting member, the support arm extending rearward from the rotatably supporting member; a pair of upper and lower link members pivotally connected to the support arm at two locations on a rear portion of the support arm at least on one side of the vehicle body in a vehicle width direction, the two locations being spaced in the upward-downward direction, the pair of upper and lower link members extending rearward from the support arm, each of the link members having a rear portion pivotally connected to the vehicle body frame member; a handle; and a handle supporting member removably coupled to the vehicle body frame member and supporting the handle.

A main body frame (100) for an electric motorcycle comprises a front fork support member (101) with a front fork through hole for loading a pivot stem of a front fork (200), the front fork through hole has a pivotal axis arranged in a central plane (P) of the main body frame; the main body frame further comprises a right and a left frame part (102, 105) arranged on opposite sides of the central plane of the main body frame, each having an elongated shape and being formed of an upper part (102a, 102b) and a lower part (102c, 102d), respectively at different sides of an elongation direction changing portion (102e), a first buffer member (120) attached, at opposite sides thereof, to the right and the left frame part, and crossing the central plane. wherein starting from the respective elongation direction changing portions thereof. the upper parts of the left and the right frame part extend inwardly towards the central plane so as to embrace the front fork support member, and are attached to opposite sides of the front fork support member, and a largest width (a7) of the main body frame in a width direction (Z) perpendicular to the central plane is 10 cm or more and 30 cm or less.

A main body frame (100) for an electric motorcycle comprises a front fork support member (101) with a front fork through hole for loading a pivot stem of a front fork (200), the front fork through hole has a pivotal axis arranged in a central plane (P) of the main body frame; the main body frame further comprises a right and a left frame part (102, 105) arranged on opposite sides of the central plane of the main body frame, each having an elongated shape and being formed of an upper part (102a, 102b) and a lower part (102c, 102d), respectively at different sides of an elongation direction changing portion (102e), a first buffer member (120) attached, at opposite sides thereof, to the right and the left frame part, and crossing the central plane. wherein starting from the respective elongation direction changing portions thereof. the upper parts of the left and the right frame part extend inwardly towards the central plane so as to embrace the front fork support member, and are attached to opposite sides of the front fork support member, and a largest width (a7) of the main body frame in a width direction (Z) perpendicular to the central plane is 10 cm or more and 30 cm or less.

A seat-supporting structure for mounting on a motorcycle frame having a main skeleton includes: two load-bearing structures that are disposed under a seat of the motorcycle frame and that support a load on the seat of the motorcycle frame. Each of the two load-bearing structures includes: a base portion at a bottom of the load-bearing structure that includes a branch portion that extends upward in a diagonally backward direction and a frame-mounting portion on the main skeleton; a middle portion that extends, from the branch portion of the base portion, upward in a diagonally forward direction; a top portion that extends, from an upper part of the middle portion, upward in a diagonally backward direction and receives the load; and multiple openings and ribs that resist stress from the load and vibration while the motorcycle is in motion.