Pedal device with function of adjusting pedal effort and hysteresis

A pedal device with a function of adjusting a pedal effort and hysteresis, the pedal device comprising:

• a housing fixed to a car body;
• an arm hinged to the housing;
• an elastic member disposed at the hinged portion between the housing and the pedal arm, and providing a return force to the pedal arm;
• a pedal effort adjusting unit disposed at the pedal arm and pressing an end of the elastic member to adjust a pre-compression force to the elastic member;
• and
• a hysteresis adjusting unit movably disposed at the housing to press a pivot end of the pedal arm and adjusting the amount of change in stroke-to-pedal effort when the pedal arm operates;
• wherein the hysteresis adjusting unit includes a first friction member pivotably combined to a pivot end of the pedal arm, a second friction member pivotably combined to the housing and contacting with the first friction member, and a position adjusting unit provided to vary the fixed position of the second friction member with respect to the housing and adjusting the amount of pressing the second friction member against the first friction member;
• the position adjusting unit includes a guide groove elongated toward the first friction member at an end of the housing and a slide block movably inserted in the guide groove;
• and the slide block further includes a wire spring elastically engaged with an engagement portion formed on the inner sides of the guide groove and variably fixing the position of the slide block with respect to the guide groove.