Patent ID: 7750258

Claim:
A pedal device with a function of adjusting pedal effort comprising: a housing that is fixed to a car body; a pedal arm that is hinged to the housing and pivots about the housing; an elastic member that is disposed between the housing and the pivot end of the pedal arm and provides a return force to the pedal arm; a pedal effort adjusting unit that is movably disposed in the housing and has a sloped portion for adjusting a precompression force to the elastic member; and a pre-compression force setting unit that sets a fixed position of the pedal effort adjusting unit with respect to the housing and keeps a pre-compression force applied to the elastic member at a predetermined level, wherein the elastic member is a coil spring composed of a large-diameter spring and a small-diameter spring that is coaxially disposed at a predetermined distance inside the large-diameter spring, and the pedal effort adjusting unit includes an outer sliding member having first sloping bodies on the lower side to adjust the pre-compression force to the large-diameter coil spring, and an inner sliding member having a second sloping body on the lower side to adjust the pre-compression force to the small-diameter coil spring.