Clutch system interlocking with accelerator and brake pedal

A clutch system comprising:

• a clutch assembly connected or disconnected to an engine of a vehicle, wherein a state of the clutch assembly is changed by pressing or releasing of an accelerator pedal or a brake pedal, and
• a rotary shaft assembly including:
• a power transmission device transmitting a motion of pressing or releasing of the accelerator pedal and the brake pedal into the clutch assembly, and
• a driving shaft connected to the power transmission device,
• wherein the clutch assembly is in any one of states including:
• a first state transmitting a rotational force of the engine by pressing the accelerator pedal;
• a third state cutting off a connection between the engine and the driving shaft by pressing the brake pedal, and
• a fourth state that is an initial transition state or intermediate state transmitting a rotational force of the engine to the transmission by releasing the brake pedal,
• wherein the clutch assembly includes:
• an out-cam rotating in conjunction with actuation of the accelerator pedal and the brake pedal of the vehicle;
• an in-cam rotating according to rotation of the engine of the vehicle;
• a rotary member contacted with the out-cam and selectively contacted with the in-cam by moving in a height direction according to rotation of the out-cam, and
• a forked part supporting the rotary member and rotating in conjunction with the rotary member,
• wherein a rotational force of the engine is sequentially transmitted through the in-cam, the rotary member, and the forked part.