Clutch device

A clutch device comprising:

• a first rotary member including a first pressure applying part, the first rotary member disposed to be rotatable about a rotational axis;
• a second rotary member including a second pressure applying part disposed at an interval from the first pressure applying part in an axial direction, the second rotary member disposed to be rotatable about the rotational axis, the second rotary member disposed outside the first rotary member in the axial direction;
• a clutch part disposed between the first pressure applying part and the second pressure applying part, the clutch part configured to allow and block transmission of a power;
• a support member disposed outside the second rotary member in the axial direction, the support member configured to be rotated unitarily with the first rotary member;
• and
• a cam mechanism configured to separate the support member and the second rotary member away from each other in the axial direction when the support member and the second rotary member are rotated relatively to each other, wherein
• the cam mechanism includes a first cam surface, a second cam surface, a third cam surface and a fourth cam surface, the first and second cam surfaces are included in the support member, the third and fourth cam surfaces are included in the second rotary member,
• the first and second cam surfaces tilt to face away from the support member, the first and second cam surfaces tilt to face axially inside and face oppositely to each other in a circumferential direction,
• the third cam surface is opposed to the first cam surface, and
• the fourth cam surface is opposed to the second cam surface.