DRIP PREVENTION DEVICE IN A SEALER GUN

摘要

A sealer gun that discharges a liquid material of a coating agent/a filler from a nozzle on its tip is securely prevented from producing dripping that arises as a liquid material drips from the tip of the nozzle and remains when a discharge of the liquid material is stopped. A pump that includes a cylinder and a piston fitting in the cylinder capable to move in and out freely is assembled onto a discharge cylinder of the sealer gun, an operation rod interlocked with the piston of the pump and a grip member are interlocked via an interlock mechanism so as to perform pump operation of suction-discharge by moving in and out the piston caused by pivoting motion of the grip member, and a suction-discharge aperture of the pump is positioned in an internal space of the nozzle, and it is configured such that when a discharge of a liquid material is stopped by releasing the grip member, a negative or positive pressure is introduced into the nozzle owing to pump operation caused by resilient pivoting of the grip member.