Electrical drive assembly for an exercise machine

An electrical drive assembly adapted for use on an exercise machine, and the drive assembly comprising:

• an electrical motor assembly (10) having a toothed pinion (12) mounted on the electrical motor (10) and rotating in a single direction;
• a driven wheel (20) with two side faces having a shaft hole (21) axially defined in the driven wheel (20) and rotating with the toothed pinion (12) via a first driving belt (14) looping around the driven wheel (20) and the toothed pinion (12) of the electrical motor;
• a unidirectional clutch (30) firmly attaching on one side-face of the driven wheel (20) and having
• a middle plate (31);
• a first insert (32) attached to one side of the middle plate (31) to press into the shaft hole (21) in the driven wheel (20);
• a second insert (33) attached to the other side of the middle plate (31) opposite to the first insert (31);
• and
• a unidirectional bearing (35) secured inside the clutch (30) to make the clutch (30) rotate in one direction and keep the driven wheel (20) from rotating in a direction opposite to the single direction;
• a flywheel (40) driven by the clutch (30) and having a central circular recess (43) defined in the flywheel (40) and a belt wheel (45) firmly received inside the central circular recess (43) to attach the flywheel (40);
• a shaft (47) rotatably penetrating the driven wheel (20), the clutch (30), the flywheel (40) and the belt wheel (45) and having two ends adapted to secure on stationary places;
• and
• a crank wheel (50) rotating synchronously with the belt wheel (45) via a second driving belt (54) looping around the crank wheel (50) and the belt wheel (45).