Patent ID: 7121259

Claim:
A motor drive type throttle valve control apparatus, comprising: a throttle body equipped with a motor; a gear mechanism for transferring a torque of said motor to a throttle shaft supporting a throttle valve; a frame formed on a side wall of said throttle body for shaping a gear mounting space for said gear mechanism; a rotor fixed on said throttle shaft and having a segment gear as a member of said gear mechanism; a full-closed stopper provided at said throttle body for defining a mechanical full-closed position of said throttle valve; a stopper-contact element provided at said segment gear for contacting the full-closed stopper and thereby stopping the throttle valve from closing beyond said full-closed position; a spring member for exerting a force on said throttle shaft in a rotational direction; a spring-retaining portion provided at said throttle body for retaining one end of said spring member; and a default stopper for keeping said throttle shaft at a determined position opened more than a position of said full-closed stopper in cooperation with said spring member when said motor is nonenergized, wherein said default stopper, said full-closed stopper and said spring-retaining portion are arranged near said frame around a portion except said segment gear of said rotor.