Waste gate valve for turbocharger

A waste gate valve for a turbocharger, the turbocharger including a turbine housing, the turbine housing including a waste gate port, the waste gate valve comprising:

• a valve body including a valve plate and a valve shaft, the valve plate being configured to abut onto the turbine housing and to close the waste gate port, the valve shaft being disposed on a rear surface of the valve plate that is opposite to an abutting surface of the valve plate that closes the waste gate port;
• a swing arm including a shaft and a lever, the shaft being supported such that the shaft rotates with respect to the turbine housing, the lever being formed with an insertion hole into which the valve shaft is inserted;
• a supporting plate fixed to a portion of the valve shaft that protrudes from the insertion hole, the supporting plate being fixed to the valve shaft such that the lever is interposed between the supporting plate and the valve plate;
• and
• an elastic member clamped between the supporting plate and the lever or between the lever and the valve plate, the elastic member being configured to urge the lever in a direction in which the valve shaft extends, wherein:
• the valve body is fixed such that the valve body tilts with respect to the lever;
• and
• one of the supporting plate and the lever that clamp the elastic member or one of the lever and the valve plate that clamp the elastic member includes a protruding portion that is positioned closer to the valve shaft than the elastic member or farther from the valve shaft than the elastic member and that protrudes toward the other of the supporting plate and the lever or toward the other of the lever and the valve plate.