Patent ID: 8434385

Claim:
A pedal device with a function of adjusting a pedal effort and hysteresis, the pedal device comprising: a housing fixed to a car body; a pedal arm hinged to the housing; an elastic member disposed at the hinged portion between the housing and the pedal arm, composed of torsion springs, 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 wherein the pedal effort adjusting unit includes: an insert that is inserted and fixed in through-holes formed in the pedal arm and having fastening holes; and adjusting bolts engaged with the fastening holes and pressing an end of the torsion springs; 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 contact between the second friction member and the first friction member, wherein the position adjusting unit includes a guide groove elongated toward the first friction member at an end of the housing, a slide block movably inserted in the guide groove, and a wire spring elastically engaged and clipped with an engagement portion formed on the inner sides of the guide groove to fix the slide block, and wherein the slide block is configured to he movable by relocating the wire spring along the guide groove, and the movement of the slide block is configured to change the amount of contact between the first friction member and the second friction member.