Clutch apparatus

A clutch apparatus to transmit a rotational driving force of an input shaft to an output shaft or cut off the rotational driving force, the clutch apparatus comprising:

• a clutch center housed in a clutch housing holding input-side rotary plates to be rotationally driven in response to rotational driving of the input shaft, the clutch center holding output-side rotary plates arranged alternately with the input-side rotary plates, the clutch center being rotationally driven together with the output shaft;
• and
• a pressure assembly movable toward or away from the clutch center and rotatable relative to the clutch center to push the input-side rotary plates and the output-side rotary plates;
• wherein
• the pressure assembly includes:
• a first pressure structure;
• a second pressure structure externally fitted to the first pressure structure;
• and
• a clearance between an outer peripheral surface of a portion of the first pressure structure and an inner peripheral surface of the second pressure structure in a radial direction of the output shaft, the portion of the first pressure structure including an open end adjacent to the clutch center, the inner peripheral surface being externally fitted to the outer peripheral surface;
• and
• the open end of the first pressure structure or a portion of the clutch center adjacent to the open end of the first pressure structure is provided with a first oil passage through which clutch oil inside the first pressure structure is guidable to the clearance;
• and
• assuming that a direction in which the pressure assembly moves toward the clutch center is a first direction and a direction in which the pressure assembly moves away from the clutch center is a second direction, the clearance is located radially outward of a nut fixing the clutch center to the output shaft, and an edge of the clearance facing the first direction extends farther in the first direction than an edge of the nut facing in the second direction.