Abstract: A sliding block type stepless autoshift speed changer includes a holder sleeve affixed to a main transmission shaft and holding two weights by means of two torsional members, an eccentric block radially movably coupled to the holder sleeve; a driving wheel supported on a ring round the eccentric block and having radial sliding grooves on two sides, two clutch wheels respectively fastened to a wheel hub and a secondary power output shaft, each clutch wheel having an annular sliding groove respectively facing the driving wheel, sliding blocks respectively sliding in the annular sliding grooves of the clutch wheels, each sliding block having a roller respectively coupled to and movable along the radial sliding grooves of the driving wheel, a plurality of beveled guide surface portions, and a plurality of rolling cylinders rotatably supported on and movable along the beveled guide surface portions.

Abstract: A sliding block type stepless autoshift speed changer includes a holder sleeve affixed to a main transmission shaft and holding two weights by means of two torsional members, an eccentric block radially movably coupled to the holder sleeve; a driving wheel supported on a ring round the eccentric block and having radial sliding grooves on two sides, two clutch wheels respectively fastened to a wheel hub and a secondary power output shaft, each clutch wheel having an annular sliding groove respectively facing the driving wheel, sliding blocks respectively sliding in the annular sliding grooves of the clutch wheels, each sliding block having a roller respectively coupled to and movable along the radial sliding grooves of the driving wheel, a plurality of beveled guide surface portions, and a plurality of rolling cylinders rotatably supported on and movable along the beveled guide surface portions.

Abstract: A moveable gear type automatic stepless speed change device primarily structured to comprises an electric motor, a stepless speed change device and an automatic gear shift device. An output shaft of the electric motor is fixedly configured to one end of a main transmission shaft of the stepless speed change device, and the automatic gear shift device is disposedly configured on another end of the main transmission shaft. A rotating eccentric force of an eccentric drive plate of the stepless speed change device is actuated by means of the automatic gear shift device via an ascending and descending mechanism, thereby achieving effectiveness of automatically controlling stepless speed change.

Abstract: An eccentrically operated speed-variating device and, more particularly, a differential structure having a high power and high speed with sudden low speed (and zero speed) return function is constructed to include a main transmission shaft, a differential assembly mounted on the main transmission shaft and driven by a speed control arm to move a differential control wheel axially, and an eccentric driving wheel mounted around the main transmission shaft and controlled to change the eccentric radius thereof about the main transmission shaft upon axial movement of the differential control wheel.