Patent ID: 6868828

Claim:
An idle speed control apparatus in a throttle body comprising: a throttle body 1 in which an intake passage 2 is, the intake passage is opened and closed by a throttle valve 4 attached to a rotatably supported throttle valve shaft 3 , and a throttle valve lever 5 operated by a driver is provided in an end portion of the throttle valve shaft 3 ; a link apparatus L in which a cam lever 10 is attached to one end of a rotatably supported link shaft 9 , and a link lever 11 is attached to another end of the link shaft; and a stepping motor M in which a rotation of a rotor is converted into a linear motion toward the outside by a slider 12 so as to be output, wherein the linear motion of the slider 12 of the stepping motor is transmitted as a rotational motion of the link shaft 9 via the link lever 11 , and a low opening degree rotational position of the throttle valve lever 5 is controlled in correspondence to the rotation of the cam lever 10 rotating in synchronization with the link shaft 9 .