Drive pulley for a continuously variable transmission

A drive pulley for a continuously variable transmission comprising:

• a fixed sheave having an axis of rotation;
• a movable sheave axially movable relative to the fixed sheave;
• a spider axially fixed relative to the fixed sheave and rotationally fixed relative to the movable sheave, the movable sheave being disposed axially between the spider and the fixed sheave;
• a biasing member biasing the movable sheave axially away from the fixed sheave;
• at least one centrifugal actuator including an arm pivotally connected to one of the movable sheave and the spider, the arm pivoting away from the one of the movable sheave and the spider as a speed of rotation of the drive pulley increases, the arm pushing against another one of the movable sheave and the spider as the arm pivots away from the one of the movable sheave and the spider, thereby moving the movable sheave axially toward the fixed sheave;
• and
• at least one slider assembly including a slider block connected to one of the movable sheave and the spider and abutting another one of the movable sheave and the spider, the slider block sliding along the other one of the movable sheave and the spider as the movable sheave moves axially, the slider block moving along a radially extending sliding axis,
• the at least one slider assembly transferring torque between the movable sheave and the spider;
• for each of the at least one slider assembly:
• the other one of the movable sheave and the spider defining a passage between a first wall and a second wall;
• the slider block being disposed in the passage;
• the slider block having a first surface abutting and sliding along the first wall;
• the slider block having second and third surfaces abutting and sliding along the second wall;
• the first surface being larger than the second surface;
• the first surface being disposed radially outward of the second surface relative to the axis of rotation of the fixed sheave;
• the first and second surfaces being planar;
• the first surface extending circumferentially further away from the sliding axis than the second surface;
• the first surface being angled relative to the sliding axis;
• the second surface being parallel to the sliding axis;
• the third surface being angled relative to the sliding axis;
• the first and third surfaces extending toward the sliding axis as they extend away from the axis of rotation of the fixed sheave;
• a fourth surface of the first wall abutting the first surface of the slider block being angled relative to the sliding axis;
• a fifth surface of the second wall abutting the second surface of the slider block being parallel to the sliding axis;
• a sixth surface of the second wall abutting the third surface of the slider block being angled relative to the sliding axis;
• and
• the fourth and sixth surfaces extending toward the sliding axis as they extend away from the axis of rotation of the fixed sheave.