Abstract: An automatic stepless speed-changing mechanism mainly includes a pivotal shaft, a plurality of mounting discs mounted along the pivotal shaft and provided with radially extended guide rails, a plurality of axial rods separately axially extended through the guide rails to slide and rotate therein, a transmission gear, a restoring mechanism, and driving members mounted on the axial rods, and a transmission member wound around the driving members. The driving members are preferably gears, and the transmission member is preferably a chain. When the transmission member brings the driving members to move, the axial rods, which are connected to the driving members and the transmission gear and the restoring mechanism, are caused to slide within the guide rails, resulting in changes in a radius of turn of the driving members to provide the function of automatic stepless change of speed.

Abstract: An automatic non-step speed changing mechanism mainly includes a pivot shaft, a first and a second set of joint disks rotatably mounted on the pivot shaft, driving elements, and a transmission element wound around the driving elements. The first and the second set of joint disks are provided with guide rails and passages, respectively, for the driving elements to slidably and rotatably locate therein. A guiding section is provided in each of the passages on the second set of joint disks for one driving element to mesh therewith while moving in and relative to the passage. When the driving elements mesh with the guiding sections and slide in the guide rails and the passages respectively provided on the first and the second set of joint disks, a winding radius of the transmission element wound around the driving elements is automatically changed.

Abstract: An automatic stepless speed-changing mechanism mainly includes a pivotal shaft, a plurality of mounting discs mounted along the pivotal shaft and provided with radially extended guide rails, a plurality of axial rods separately axially extended through the guide rails to slide and rotate therein, a transmission gear, a restoring mechanism, and driving members mounted on the axial rods, and a transmission member wound around the driving members. The driving members are preferably gears, and the transmission member is preferably a chain. When the transmission member brings the driving members to move, the axial rods, which are connected to the driving members and the transmission gear and the restoring mechanism, are caused to slide within the guide rails, resulting in changes in a radius of turn of the driving members to provide the function of automatic stepless change of speed.

Abstract: A kinetic energy generating mechanism includes a driven mechanism having a transmission member wound around two driving members that are rotatably connected to two pivotal shafts fixedly connected to a vehicle at predetermined positions, a transmission mechanism having front and rear rotating shafts mounting on the vehicle, and two transmission members separately wound around two pairs of front and rear driving members that are engaged with two unidirectional-rotation control members provided on at least the rear rotating shaft, and two actuating mechanisms fixedly connected to the transmission members of the driven and the transmission mechanisms. By applying a rearward force to slide either of the two actuating mechanisms, two rear wheels of the vehicle connected to two ends of the rear rotating shaft could be rotated forward with largely reduced effort.

Abstract: A kinetic energy generating mechanism includes a driving part, a transmission part, and a driven part. The driving part includes front and rear rollers separately mounted on a vehicle, and an actuating belt wound around the front and rear rollers. The transmission part is a transmission gear mounted to an end of the rear roller to rotate along with the same. The driven part is a driven gear mounted on a rear axle of the vehicle and meshing with the transmission gear, or may include front and rear driven gears wound around by a chain to mesh with the transmission part and mount on the rear axle of the vehicle, respectively. When a user walks or runs on the actuating belt, the latter rotates the front and the rear roller counterclockwise, and the driven part meshed with the transmission part is rotated clockwise to move the vehicle forward.

Abstract: A kinetic energy generating mechanism includes a driven mechanism having a transmission member wound around two driving members that are rotatably connected to two pivotal shafts fixedly connected to a vehicle at predetermined positions, a transmission mechanism having front and rear rotating shafts mounting on the vehicle, and two transmission members separately wound around two pairs of front and rear driving members that are engaged with two unidirectional-rotation control means provided on at least the rear rotating shaft, and two actuating mechanisms fixedly connected to the transmission members of the driven and the transmission mechanisms. By applying a rearward force to slide either of the two actuating mechanisms, two rear wheels of the vehicle connected to two ends of the rear rotating shaft could be rotated forward with largely reduced effort.

Abstract: A kinetic energy generating mechanism includes a driving part, a transmission part, and a driven part. The driving part includes front and rear rollers separately mounted on a vehicle, and an actuating belt wound around the front and rear rollers. The transmission part is a transmission gear mounted to an end of the rear roller to rotate along with the same. The driven part is a driven gear mounted on a rear axle of the vehicle and meshing with the transmission gear, or may include front and rear driven gears wound around by a chain to mesh with the transmission part and mount on the rear axle of the vehicle, respectively. When a user walks or runs on the actuating belt, the latter rotates the front and the rear roller counterclockwise, and the driven part meshed with the transmission part is rotated clockwise to move the vehicle forward.