Cone clutch for vehicle

A cone clutch for a vehicle, the cone clutch apparatus comprising:

• a hub mounted on a rotation shaft such that an axial movement and a rotation of the hub are restrained;
• a sleeve mounted on an external side of the hub such that a rotation of the sleeve is restrained and an axial movement of the sleeve is allowed;
• a clutch ring mounted such that an axial movement of the clutch ring is restrained and a rotation of the clutch ring is allowed relative to the rotation shaft, the clutch ring being integrally mounted with a clutch cone protruding toward the hub such that an external diameter of the clutch cone is formed to decrease toward the hub;
• a first friction ring mounted between the clutch ring and the hub such that a rotation of the first friction ring is restrained relative to the hub, the first friction ring being configured to be pressed toward the clutch ring in an axial direction of the first friction ring to apply frictional force with the clutch cone;
• an internal middle cone mounted such that a rotation of the internal middle cone is restrained relative to the clutch ring, the internal middle cone including an internal side surface formed to be brought into contact with an external side surface of the first friction ring;
• a second friction ring mounted such that a rotation of the second friction ring is restrained relative to the hub, the second friction ring including an internal side surface formed to be brought into contact with an external side surface of the internal middle cone;
• an external middle cone mounted such that a rotation of the external middle cone is restrained relative to the clutch ring, the external middle cone including an internal side surface formed to be brought into contact with an external side surface of the second friction ring;
• and
• a third friction ring mounted such that a rotation of the third friction ring is restrained relative to the hub, the third friction ring including an internal side surface formed to be brought into contact with an external side surface of the external middle cone when pressed by the sleeve,
• wherein, when the third friction ring is pressed by the sleeve and the third friction ring, the external middle cone, the second friction ring, the internal middle cone, the first friction ring, and the clutch cone are sequentially brought into contact with each other, distances from the hub in an axial direction of the clutch cone increase in order of the first friction ring, the internal middle cone, the second friction ring, the external middle cone, and the third friction ring.