PROBLEM TO BE SOLVED: To provide a hand gun type liquid injector capable of switching full cone injection and direct injection, and capable of enlarging an injection distance in both the full cone injection and the direct injection.SOLUTION: A nozzle 11 provided on the tip of a liquid injector 1 is combined with a knob 7, a core 12 on the tip of a valve stem 8, a valve seat 14 and a front nozzle hole piece 15 for contacting or separating a valve part 13 on the tip of the core and a top cover 17 for fixing the nozzle hole piece 15 to a body 2 via a presser member 16. The valve stem 8 threadedly engaged with the body 2 advances or retreats by rotary operation of the knob 7, and a state of contacting the valve part 13 with the valve seat 14 and a state of separating from the valve seat 14 are switched. When a spiral groove 12b of the core communicates with an inflow port 15a of the nozzle hole piece in a position of contacting the valve part 13 with the valve seat 14, full cone-shaped injection is executed from an injection hole 15b of the nozzle hole piece, and in a state of separating the valve part 13 from the valve seat 14, injection from the injection hole 15b becomes direct injection.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2016,JPO&INPIT【課題】フルコーン噴射と直射の切り替えが可能で、フルコーン噴射、直射ともに噴射距離を大きくすることが可能なハンドガンタイプの液体噴射装置を提供する。【解決手段】液体噴射装置1の先端に設けるノズル11を、ノブ7と、弁軸8の先端の中子12と、中子の先端の弁部13を接離させる弁座14と前方の噴口ピース15と、押え部材16を介して噴口ピース15を本体2に固定するトップカバー17を組合せ、ノブ7の回転操作で本体2に螺合した弁軸8が進退して弁部13が弁座14に接触した状態と弁座14から離反した状態を切替え、弁部13が弁座14に接触した位置で中子の螺旋溝12bが噴口ピースの流入口15aに連通したときに噴口ピースの噴孔15bからフルコーン状の噴射がなされ、弁部13が弁座14から離反した状態のときには、噴孔15bからの噴射が直射となる。【選択図】図2
