Throttle device

A throttle device, comprising:

• a throttle body including an intake passage, a throttle valve positioned in the intake passage and configured to open and close the intake passage;
• a throttle shaft coupled to the throttle valve;
• a rotating member coupled to the throttle shaft and configured to be rotated by a drive source;
• a coil spring interposed between the throttle body and the rotating member, wherein the coil spring biases the throttle valve toward a default position,
• wherein the coil spring includes a first spring portion having a first end, a second spring portion having a second end, and an intermediate hook portion connecting the first spring portion and the second spring portion;
• and
• wherein the first end of the first spring portion engages a first spring engaging portion of the rotating member, the second end engages a second spring engaging portion of the throttle body, and the intermediate hook portion engages at least one of a first stopper of the rotating member and a second stopper of the throttle body;
• an inner periphery supporting portion provided of the rotating member or the throttle shaft configured to support an inner peripheral side of the first spring portion;
• and
• an outer periphery supporting portion of the rotating member configured to support an outer peripheral side of the first spring portion,
• wherein the rotating member includes a blocking structure configured to prevent the first spring portion from being fitted into an outside of the outer periphery supporting portion when assembling the coil spring.