Nozzle gun and lever lock mechanism

A nozzle gun comprising:

• a nozzle main body having a flow path through which a fluid passes and a discharge outlet formed on a distal end of the flow path;
• an operating lever attached to the nozzle main body to be movable toward and away from the nozzle main body;
• an on-off valve disposed along the flow path and configured to open and close the flow path according to a relative position of the operating lever with respect to the nozzle main body;
• a stopper attached to the nozzle main body to be pivotable between a locked position and a non-lock position, the stopper having a locking portion, and receptacles disposed on a movement trajectory of the operating lever;
• and
• pivoting guide portions provided on the nozzle main body, wherein
• when the operating lever is moved toward the nozzle main body and places the stopper in the locked position, the locking portion engages with the operating lever to prevent the operating lever from moving away from the nozzle main body,
• when the stopper is in the non-lock position, the locking portion does not engage with the operating lever and the operating lever is capable of moving away from the nozzle main body, and
• when the operating lever is moved toward the nozzle main body with the stopper in the non-lock position, the receptacles are pressed by the operating lever to cause the stopper to pivot into the locked position while the stopper abuts on the pivoting guide portions;
• and
• wherein the stopper is capable of pivoting to an opposite side of the non-lock position into a retracted position with respect to the locked position, and the nozzle main body is provided with a retention portion on which the stopper abuts when the stopper is in the retracted position to secure the retracted position;
• and
• wherein, in the retracted position, the locking portion of the stopper remains spaced apart from the movement trajectory of the operating lever regardless of whether the operating lever is moved toward or away from the nozzle main body.