塗布剤・充填剤などを液材料としたシーラを、構造体の隙間・間隙に、塗布・充填する作業に用いられるシーラガンは、通常、図１に示しているように、基端側に把持グリップ１を有する中空筒体の銃身状に形成したボディａの先端部に、筒先に吐出口２ａを形成した吐出筒２の基端側を接続し、ボディａの内部には、導入管３から供給されてくるシーラを先端部の吐出筒２に導く流路ｕと、その流路ｕと吐出筒２との連通を断・接する弁口４０と弁座口４１とからなる弁機構４とを設け、その弁機構４と、ボディａの把持グリップ１に並列させてボディａに軸支した握りレバー５とを、その握りレバー５を把持グリップ１と共に握り込む作動で弁機構４が開弁し、その握りレバー５の握り込みの解放作動でその握りレバー５が復元バネ５０により復元回動する作動で弁機構４の閉弁が行われるよう連繋機構５１を介し連繋し、握りレバー５を把持グリップ１とともに握り込むと、弁機構４が開弁して導入管３から供給されてくるシーラが、流路ｕを経て吐出筒２に導かれて、それの筒先の吐出口２ａから吐出され、握りレバー５の握り込みを放すと、弁機構４が閉弁して、シーラの吐出が停止するように構成してある。
As shown in FIG. 1, a sealer gun used for applying and filling a sealer made of a liquid material such as a coating agent / filler into a gap / gap of a structure body usually has a grip grip on the base end side. 1 is connected to the distal end portion of a body a formed in a barrel shape of a hollow cylinder having a base end of a discharge cylinder 2 having a discharge port 2a formed at the end of the cylinder. And a valve mechanism 4 including a valve port 40 and a valve seat port 41 for disconnecting / contacting the communication between the flow channel u and the discharge cylinder 2. The valve mechanism 4 is opened by the operation of gripping the valve mechanism 4 and the grip lever 5 pivotally supported on the body a in parallel with the grip grip 1 of the body a together with the grip grip 1. When the grip lever 5 is released, the grip lever 5 is restored to the restoring spring 50. When the gripping lever 5 is gripped together with the gripping grip 1, the valve mechanism 4 is opened and supplied from the introduction pipe 3 through the connecting mechanism 51 so that the valve mechanism 4 is closed by the operation of further restoring rotation. When the sealer is guided to the discharge cylinder 2 through the flow path u and discharged from the discharge port 2a at the end of the cylinder, when the grip lever 5 is released, the valve mechanism 4 is closed, and the sealer The discharge is stopped.
このシーラガンＡは、握りレバー５の握り込みを放して、該握りレバー５を復元バネ５０により把持グリップ１から離れた開放位置に復元回動させ、同時にこの復元回動により、弁機構４を閉弁に作動させ、シーラの吐出を停止させたとき、弁機構４より下流側においてシーラガンＡの器内に残留したシーラが、導入管３から導入されるときに与えられていた圧力により、吐出筒２の筒先の吐出口２ａから押し出されてくるようになる。
The sealer gun A releases the grip lever 5 and restores the grip lever 5 to the open position away from the grip grip 1 by the restoring spring 50, and simultaneously closes the valve mechanism 4 by the restoring rotation. When the sealer discharge is stopped by operating the valve and stopping discharge of the sealer, the sealer remaining in the container of the sealer gun A on the downstream side of the valve mechanism 4 is applied by the pressure applied when introduced from the introduction pipe 3. It comes to be pushed out from the discharge port 2a at the end of the second tube.
そして、このシーラガンＡの器内から吐出口２ａを介して押し出されるシーラは、粘性を具備して付着性と凝集性が大きい性状のものであることから、吐出筒２の筒先の吐出口２ａから離れずに、その吐出口２ａの周縁に付着して、つらら状に垂れ下がり、液だれの現象を呈するようになる。
The sealer pushed out from the inside of the sealer gun A through the discharge port 2a has a viscosity and has high adhesion and cohesiveness. Therefore, from the discharge port 2a at the end of the discharge tube 2 Without leaving, it adheres to the periphery of the discharge port 2a, hangs down in an icicle shape, and exhibits a phenomenon of dripping.
このシーラの吐出を握りレバー５の握り込みの解放による弁機構４の閉弁作動により停止させたときに、吐出筒１の先端の吐出口２ａの周辺に付着して垂れ下がるシーラの液だれは、放置しておくと、シーラが外気に曝されることで、次に塗布作業・充填作業を行うときには、正常に使用できない性状のものに変性する性状のものであることから、シーラの吐出を停止させたときに、その直後に、吐出筒２の先端から拭き取って廃棄する処理を行っている。このことから、シーラガンＡには、液材料のシーラの吐出を停止させる度ごとに、生じてくる液だれを拭き取る作業を行わなければならないことで、塗布・充填作業の作業性を悪くし、また液だれを廃棄することで、シーラの損失を招いている問題がある。
When the discharge of the sealer is stopped by the valve closing operation of the valve mechanism 4 by releasing the gripping lever 5, the dripping of the sealer that adheres to the periphery of the discharge port 2 a at the tip of the discharge cylinder 1 and hangs down is If left unattended, the sealer is exposed to the outside air, so the next time the coating and filling operations are performed, the sealer discharges because it has a property that can be changed to a property that cannot be used normally. Immediately thereafter, the tip of the discharge cylinder 2 is wiped away and discarded. For this reason, the sealer gun A has to perform the work of wiping off the generated liquid every time the discharge of the sealer of the liquid material is stopped. There is a problem of causing the loss of the sealer by discarding the dripping.
シーラガンＡに組み付け装備せしめる液だれの防止装置Ｂは、このシーラガンＡに、シーラの吐出を停止させる度ごとに生じてくる液だれを除去消失せしめるためのものである。
The liquid dripping prevention device B assembled and installed in the sealer gun A is for removing and disappearing liquid dripping that occurs every time the sealer gun A stops discharging the sealer.
このシーラガンＡに組み付け装備せしめる液だれ防止装置Ｂは、図２に示しているように、シーラガンＡの本体を構成するボディａに組み付けるポンプ室ｐが拡縮して吸引と吐出の作動を行うポンプ装置Ｐと、そのポンプ装置Ｐの吐出作動と吸引作動とが、握りレバー５を握り込む作動により行われる弁機構４の開弁作動及び握りレバー５の握り込みの解放により該レバー５が復元バネ５０により復元回動する作動によって行われる弁機構４の閉弁作動とに、それぞれ連動して行われるように、ポンプ装置Ｐと弁機構４とを連動連繋する連繋機構と、ポンプ装置Ｐの吸引作動による吸引圧を、吐出筒２の筒先の吐出口２ａの近傍に作用させるよう、基端側をポンプ装置Ｐのポンプ室ｐに接続させ、先端開口を吐出筒２の吐出口２ａの近傍に位置させて吐出筒２内に配設する吸引・吐出パイプ６３とからなる。
As shown in FIG. 2, the dripping prevention device B assembled and installed in the sealer gun A is a pump device in which the pump chamber p assembled in the body a constituting the main body of the sealer gun A expands and contracts to perform suction and discharge operations. P and the discharge operation and the suction operation of the pump device P are performed by the operation of grasping the grip lever 5, and the lever 5 is restored by the release spring 50 by the release operation of the valve mechanism 4 and the release of the grip lever 5. The pump mechanism P and the valve mechanism 4 are linked to each other so as to be linked to the valve closing action of the valve mechanism 4 that is performed by the restoring rotation of the pump mechanism P. The base end side is connected to the pump chamber p of the pump device P so that the suction pressure by the nozzle acts on the vicinity of the discharge port 2a at the tip of the discharge tube 2, and the distal end opening is positioned in the vicinity of the discharge port 2a of the discharge tube 2 Consisting suction and discharge pipe 63 be disposed in the discharge tube 2 by.
ポンプ装置Ｐは、図２に示しているように、シリンダ状に形成してボディａ内に組み付けたケーシング６０と、そのケーシング６０の後面側から摺動自在に嵌合するピストン６１と、ケーシング６０の前面側に装着するブロック６２とにより、ケーシング６０内のピストン６１の前端面とブロック６２の後端面との間に形成されるポンプ室（拡縮室）ｐが、ピストン６１の出入作動で拡縮して、そのポンプ室ｐに接続する吸引・吐出パイプ６３を介して吸引・吐出の作動を行うように構成してある。
As shown in FIG. 2, the pump device P includes a casing 60 formed in a cylinder shape and assembled in the body a, a piston 61 slidably fitted from the rear surface side of the casing 60, and the casing 60. The pump chamber (expansion / contraction chamber) p formed between the front end surface of the piston 61 in the casing 60 and the rear end surface of the block 62 is expanded and contracted by the piston 61 in and out operation. Thus, the suction / discharge operation is performed via the suction / discharge pipe 63 connected to the pump chamber p.
このポンプ装置Ｐの吸引・吐出の作動と弁機構４の閉弁・開弁の作動とを連動連繋させる連繋機構は、図２に示しているシーラガンＡに付設の液だれ防止装置Ｂにあっては、ボディａ内に前後方向にスライド自在に収蔵せしめて復元バネ５０により後方に移動するよう付勢した作動シャフト７を、握りレバー５と連繋機構５１を介し握りレバー５の握り込みによりシャフト７が復元バネ５０を押し縮めながら前方に動き、握りレバー５の握り込みを放すと、復元バネ５０が復元するバネ圧で、該シャフト７が後方に動き、同時に握りレバー５を開放側に復元回動させるように連動連繋させておいて、この作動シャフト７の前端部に、弁機構４の弁軸４２を一体的に連続させて設け、さらに、その弁軸４２の前端側にポンプ装置Ｐのピストン６１を一体的に連続させて設けることで、握りレバー５の握り込みにより、シャフト７が前方に動いて弁軸４２が、前方（図２において左方）に押し出され、その弁軸４２に設けた弁座口４１が弁口４０と対向する位置に動いて弁機構４を開弁した状態としたときに、弁軸４２の先端側に設けたピストン６１が、ケーシング６０内に押し込まれて、図３の（１）にあるように、ケーシング６０のブロック６２の前面とピストン６１の前端壁とで形成するポンプ室ｐを押し縮めて圧力を吸引・吐出パイプ６３から吐出する吐出作動を行い、握りレバー５の握り込みを解放して、握りレバー５を復元バネ５０により復元回動させ同時に弁軸４２を後方（図２において右方）に引き戻し弁軸４２に設けた弁座口４１を弁口４０から離れた位置に動かして弁機構４を閉弁状態とするときは、図３の（２）、（３）、（４）に示している如く、弁軸４２とともにピストン６１がケーシング６０から引き出されるように動いて、ケーシング６０内のポンプ室ｐを拡張させて、それにより生成される負圧で吸引・吐出パイプ６３を介し、吸引作動を行うように、ポンプ装置Ｐと握りレバー５とを連動・連繋する連繋機構を構成している。
The linkage mechanism that links the suction / discharge operation of the pump device P and the valve closing / opening operation of the valve mechanism 4 is in the dripping prevention device B attached to the sealer gun A shown in FIG. The operating shaft 7 is stored in the body a so as to be slidable in the front-rear direction, and is urged to move backward by the restoring spring 50. Moves forward while compressing and restoring the restoring spring 50, and when the grip lever 5 is released, the shaft 7 moves backward by the spring pressure restored by the restoring spring 50, and simultaneously the grip lever 5 is restored to the open side. The valve shaft 42 of the valve mechanism 4 is provided integrally and continuously at the front end portion of the operating shaft 7 and is connected to the front end side of the valve shaft 42. Piston 6 Are provided continuously in an integrated manner, so that when the grip lever 5 is gripped, the shaft 7 moves forward and the valve shaft 42 is pushed forward (leftward in FIG. 2). When the valve seat 41 moves to a position facing the valve opening 40 to open the valve mechanism 4, the piston 61 provided on the distal end side of the valve shaft 42 is pushed into the casing 60, 3 (1), the pump chamber p formed by the front surface of the block 62 of the casing 60 and the front end wall of the piston 61 is compressed to perform a discharge operation for discharging pressure from the suction / discharge pipe 63. The lever 5 is released, and the lever 5 is restored and rotated by the restoring spring 50. At the same time, the valve shaft 42 is pulled back (rightward in FIG. 2) and the valve seat 41 provided on the valve shaft 42 is opened. Move away from 40 When the valve mechanism 4 is closed, as shown in (2), (3), and (4) of FIG. 3, the piston 61 moves together with the valve shaft 42 so as to be pulled out of the casing 60, and the casing A linkage mechanism that interlocks and links the pump device P and the grip lever 5 so as to perform the suction operation through the suction / discharge pipe 63 with the negative pressure generated by expanding the pump chamber p in 60. It is composed.
そして、このポンプ装置Ｐのケーシング６０内のポンプ室ｐと連通する吸引・吐出パイプ６３は、シーラガンＡの吐出筒２内に配置し、それの先端開口を吐出筒２の筒先の吐出口２ａの近傍位置に臨むように配位してあり、これにより、握りレバー５の握り込みを解放し、弁機構４を閉弁に作動させてシーラの吐出を停止させ、同時にポンプ装置Ｐに吸引作動を行わせたときに、その吸引作動で生成する吸引圧が、吐出筒２の筒先の吐出口２ａ付近に作用して、吐出筒２の吐出口２ａの周辺に付着して垂れ下がるように生じてくるシーラの液だれを、吐出筒２の吐出口２ａから、逆に吐出筒２内に引き込み、拡張していくポンプ装置Ｐのケーシング６０内のポンプ室ｐに吸引して、吐出筒２の吐出口２ａの周辺から消失させ得るようにしている。
The suction / discharge pipe 63 communicating with the pump chamber p in the casing 60 of the pump device P is disposed in the discharge cylinder 2 of the sealer gun A, and the tip opening of the suction / discharge pipe 63 is connected to the discharge port 2a at the cylinder tip of the discharge cylinder 2. It is arranged so as to face the vicinity position, thereby releasing the grip lever 5 and operating the valve mechanism 4 to close the valve to stop the discharge of the sealer, and at the same time, the pump device P is sucked. When it is performed, the suction pressure generated by the suction operation acts on the vicinity of the discharge port 2a at the end of the discharge cylinder 2 and is caused to adhere and hang down around the discharge port 2a of the discharge cylinder 2. The liquid in the sealer is drawn into the discharge cylinder 2 from the discharge port 2a of the discharge cylinder 2 and sucked into the pump chamber p in the casing 60 of the pump device P that is being expanded. It should be able to disappear from around 2a .
このように、シーラガンＡのボディａに、把持グリップ１に並設した握りレバー５の回動作動によりポンプ室ｐが拡縮して吐出と吸引の作動を行うポンプ装置Ｐを組み付け、そのポンプ装置Ｐのポンプ室ｐに接続する吸引・吐出パイプ６３を、吐出筒２内に配置して、それの先端開口を、吐出筒２の内腔でその吐出筒２の先端の吐出口２ａの手前に臨ませておくことで構成する液だれ防止装置Ｂを装備せしめたシーラガンＡは、握りレバー５の握り込みを放すと、復元バネにより弁機構が閉弁してシーラの吐出を停止させ、同時にポンプ装置Ｐが吸引作動を行うようになることから、握りレバー５の握り込みを解放して、シーラの吐出を停止させたときに、吐出筒２の先端の吐出口２ａの周辺に付着して垂れ下がるように生じてくるシーラの液だれを、握りレバー５の復元バネ５０による復元回動により連動して作動するポンプ装置Ｐの吸引作動で生成される吸引圧により、吐出筒２内を経てポンプ装置Ｐのポンプ室（拡縮室）ｐに引き込んで、消失させるようになるが、この液だれのシーラの吸引除去は、ポンプ装置Ｐのポンプ室（拡縮室）ｐの吸引作動による吸引圧で、吐出筒２の筒先の吐出口２ａの外に垂れ下がるシーラを吐出筒２内に引き込む効率により左右される。
In this way, the pump device P that expands and contracts the pump chamber P by the turning operation of the grip lever 5 provided in parallel with the grip 1 is assembled to the body a of the sealer gun A, and the pump device P performs the discharge and suction operations. A suction / discharge pipe 63 connected to the pump chamber p is disposed in the discharge cylinder 2, and the opening at the tip of the suction / discharge pipe 63 faces the discharge port 2 a at the distal end of the discharge cylinder 2 in the lumen of the discharge cylinder 2. The sealer gun A equipped with the dripping prevention device B configured by holding the valve mechanism is closed by the restoring spring when the grip lever 5 is released, and the discharge of the sealer is stopped simultaneously. Since P starts to perform the suction operation, when the grip lever 5 is released and the discharge of the sealer is stopped, the P sticks to the periphery of the discharge port 2a at the tip of the discharge cylinder 2 and hangs down. Sheila's coming A pump chamber (expansion / contraction chamber) of the pump device P passes through the discharge cylinder 2 by the suction pressure generated by the suction operation of the pump device P that operates in conjunction with the restoring rotation by the restoring spring 50 of the grip lever 5. The liquid sealer is removed by suction by the suction pressure generated by the suction operation of the pump chamber (expansion / contraction chamber) p of the pump device P. The discharge port 2a at the end of the discharge tube 2 is removed. It depends on the efficiency with which the sealer hanging outside is drawn into the discharge cylinder 2.
ポンプ装置Ｐのポンプ室ｐが収縮する吸引作動が充分に行われていても、吐出筒２の筒先の吐出口２ａの周辺から垂れ下がるように生じてくるシーラの液だれが、吐出口２ａに作用するポンプ装置Ｐの吸引作動による吸引圧により、吐出口２ａを経て吐出筒２内に引き込まれていく効率が悪ければ、液だれのシーラは、きれいに吸引されず残りが生ずるようになる。
Even when the suction operation for contracting the pump chamber p of the pump device P is sufficiently performed, the liquid in the sealer that is caused to hang from the periphery of the discharge port 2a at the end of the discharge tube 2 acts on the discharge port 2a. If the efficiency of drawing into the discharge cylinder 2 through the discharge port 2a due to the suction pressure generated by the pumping operation of the pump device P is poor, the dripping sealer will not be sucked cleanly and the remainder will be generated.
本発明において解決しようとする課題は、上述の液だれ防止装置Ｂを装備するシーラガンにおいて、握りレバー５の握り込みを解放して、該レバー５の復元バネ５０による復元回動の作動により、弁機構４を閉弁に作動させて、吐出筒２の筒先からのシーラの吐出を停止させたときに、この作動に連動して行われるボディａに組み付けたポンプ装置Ｐの吸引作動により、吐出筒２の筒先の吐出口２ａ付近に生じてくる液だれのシーラを、吐出筒２内に配設した吸引・吐出パイプ６３を経てポンプ装置Ｐに吸引させる際のシーラを吐出筒２内に引き込む効率を良くして、ポンプ装置Ｐによる液だれのシーラの吸引・除去の効果が充分に得られるようにする点にある。
The problem to be solved by the present invention is that, in the sealer gun equipped with the above-described dripping prevention device B, the grip lever 5 is released and the valve is restored by the restoring rotation of the lever 5 by the restoring spring 50. When the mechanism 4 is operated to close the valve and the discharge of the sealer from the cylinder tip of the discharge cylinder 2 is stopped, the discharge cylinder is caused by the suction operation of the pump device P assembled to the body a performed in conjunction with this operation. The efficiency of drawing the sealer into the discharge cylinder 2 when the pump device P sucks the liquid sealer generated in the vicinity of the discharge port 2a at the end of the cylinder 2 through the suction / discharge pipe 63 disposed in the discharge cylinder 2. In other words, the effect of sucking and removing the liquid sealer by the pump device P can be sufficiently obtained.
上述の、課題を解決するための手段として、本発明においては、基端側に装備せる把持グリップ１に並列させてボディａに軸支した握りレバー５を握り込む作動により、ボディａ内に設けた弁機構４が閉弁してボディａ先端側の吐出筒２の筒先の吐出口２ａからシーラが吐出し、握りレバー５の握り込みの解放により復元バネ５０による復元回動の作動で弁機構４が閉弁してシーラの吐出を停止させるシーラガンＡのボディａに、前記握りレバー５の回動動作に連動してポンプ室ｐが拡縮する作動により吸引と吐出のポンプ作動を行うポンプ装置Ｐを組み付け、それのポンプ室ｐに接続する吸引・吐出パイプ６３を吐出筒２内に配置し、先端開口を吐出筒２の吐出口２ａの手前に臨ませ、握りレバー５の握り込みの解放により弁機構４を閉弁させてシーラの吐出を停止させたときに吐出筒２の吐出口２ａ付近に付着して垂れ下がるシーラをポンプ装置Ｐのポンプ室ｐ内に吸引せしめるようにしたシーラガンにおいて、吐出筒２内に配置せしめる吸引・吐出パイプ６３の先端側を吐出筒２の吐出口２ａに接続し、該吸引・吐出パイプ６３の筒壁の吐出筒２内腔に臨む部位に、吐出筒２内のシーラの流路ｕに対し連通する連通口Ｙを開設し、かつ、その連通口Ｙを、前記ポンプ装置Ｐの吸引・吐出のポンプ作動に連動して前後に動くようポンプ装置Ｐに設けた遮閉部材ｚにより、吸引作動時には遮閉し、吐出作動時には開放するようにしたことを特徴とするシーラガンを提起するものである。
そして、これに併せて、上述のシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続させて吐出筒２内に配置せしめる吸引・吐出パイプ６３を、内側パイプ６３０と外側パイプ６３１とが重合して嵌合する二重パイプ状に構成し、外側パイプ６３１は、それの先端側を吐出筒２の筒先の吐出口２ａに固定接続して、筒壁の吐出筒２内に位置する部位に、吐出筒２内のシーラの流路ｕに連通する連通口Ｙを開設し、内側パイプ６３０は、それの基端側をポンプ室ｐに接続連通せしめるとともにポンプ室ｐを拡縮させるピストン６１に接続連結し、筒壁の先端側でピストン６１の押し込みによる吐出作動により前方移動した状態時に前記外側パイプ６３１に開設せる連通口Ｙと重合する部位に、連通穴ｙを開設し、その連通穴ｙより先端側に遮閉部材ｚを形成したことを特徴とするシーラガン。
および、上述のシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３を、内側パイプ６３０と外側パイプ６３１とが重合して嵌合する二重パイプ状に構成し、内側パイプ６３０は、先端側を吐出筒２の筒先の吐出口２ａに固定接続して、筒壁の吐出筒２内に位置する部位に、吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、外側パイプ６３１は、基端側をポンプ室ｐに接続連通せしめるとともに、ポンプ室ｐを拡縮させるピストン６１に連結し、筒壁の先端側で、ピストン６１の押し込みによる吐出作動により前方移動した状態時において前記内側パイプ６３０に開設せる連通口Ｙと重合する部位に、連通穴ｙを開設し、その連通穴ｙより先端側の筒壁に遮閉部材ｚを形成したことを特徴とするシーラガン。
および、上述のシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３を、内側パイプ６３０と外側パイプ６３１と外周を囲う外周側６３２とが重合して嵌合する三重パイプ状に構成し、外側パイプ６３１は、軸方向に短い短筒状に形成して先端側を吐出筒２の筒先の吐出口２ａに固着連結し、吐出筒２内に位置する筒壁に、吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、内側パイプ６３０は、前記外側パイプ６３１の内径に対応する外径の筒状に形成して、先端側を前記外側パイプ６３１内に摺動自在に嵌挿し、基端側をポンプ室ｐのブロック６２に固定連結し、ピストン６１の押し込みにより前方移動した状態時に前記外側パイプ６３１に開設した連通口Ｙと重合する部位に、連通穴ｙを開設し、ピストン６１の引き込みにより後方移動した状態時に前記連通口Ｙと重合する部位に、その連通口Ｙを遮閉する遮閉部材ｚを設け、外周側パイプ６３２は、内径が前記外側パイプ６３１の外径に対応する長筒状に形成して、先端側を前記外側パイプ６３１の後端側の外周に固着連結し、後端側をポンプ室ｐのブロック６２に固着連結したことを特徴とするシーラガン。
および、上述の液だれ防止装置Ｂを装備せるシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３を、軸方向に短い短筒状の内側パイプ６３０と軸方向に長い筒状の外側パイプ６３１とが重合して接続した継ぎパイプ状に構成し、内側パイプ６３０は、先端側を吐出筒２の筒先の吐出口２ａに固定接続し、吐出筒２内に位置する筒壁に吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、外側パイプ６３１は、先端側を前記内側パイプ６３０の基端側の外周に重合させて接続固着し、基端側をポンプ室ｐに接続連通させるとともに、ポンプ室ｐの前面ブロック６２に固着連結して内側パイプ６３０を支持せしめ、かつ、該外側パイプ６３１の内腔には、基端側が、前記ポンプ装置Ｐのピストン６１に接続連結し、先端側に前記内側パイプ６３０の後端開口部を封栓する封栓部ｘを具備する封栓ロッドＬを、ピストン６１の前方移動時に封栓部ｘが前記内側パイプ６３０の後端開口部を封栓する位置を占め、ピストン６１の後方移動時に前記内側パイプ６３０の後端開口部を開放する位置を占める長さに形成して配設したことを特徴とするシーラガンを提起するものである。
As a means for solving the above-described problems, in the present invention, a grip lever 5 that is pivotally supported on the body a in parallel with the grip grip 1 provided on the base end side is provided in the body a by the operation of gripping. The valve mechanism 4 is closed, the sealer discharges from the discharge port 2a at the tip of the discharge cylinder 2 on the tip end side of the body a, and the valve mechanism is actuated by the restoring rotation by the restoring spring 50 by releasing the grip lever 5. A pump device P that performs suction and discharge pumping operations by an operation in which the pump chamber p expands and contracts in conjunction with the turning operation of the grip lever 5 on the body a of the sealer gun A that 4 closes and stops discharge of the sealer. The suction / discharge pipe 63 connected to the pump chamber p is disposed in the discharge cylinder 2, the front end opening faces the discharge port 2 a of the discharge cylinder 2, and the grip lever 5 is released. Close valve mechanism 4 In the sealer gun in which the sealer that adheres to the vicinity of the discharge port 2a of the discharge cylinder 2 and hangs down when the discharge of the sealer is stopped is sucked into the pump chamber p of the pump device P, the sealer gun is disposed in the discharge cylinder 2. The tip end side of the suction / discharge pipe 63 is connected to the discharge port 2a of the discharge cylinder 2, and the flow path u of the sealer in the discharge cylinder 2 is located at the portion of the cylinder wall of the suction / discharge pipe 63 that faces the lumen of the discharge cylinder 2. And a shutoff member z provided in the pump device P so that the communication port Y moves back and forth in conjunction with the suction / discharge pump operation of the pump device P. The present invention proposes a sealer gun which is closed at the time of suction operation and opened at the time of discharge operation.
At the same time, in the above-described sealer gun, the suction pipe 63 that is connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is overlapped with the inner pipe 630 and the outer pipe 631. The outer pipe 631 is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 so that the outer pipe 631 is connected to the discharge cylinder 2 at a position located in the discharge cylinder 2 of the cylinder wall. 2, a communication port Y communicating with the flow path u of the sealer in 2 is opened, and the inner pipe 630 is connected and connected to the piston 61 that connects the base end side of the inner pipe 630 to the pump chamber p and expands and contracts the pump chamber p. A communication hole y is opened at a position overlapping with the communication port Y that is opened in the outer pipe 631 when the cylinder 61 is moved forward by the discharge operation by pushing the piston 61 on the distal end side of the cylindrical wall. Blocking Shiragan characterized by forming the member z.
In the above-described sealer gun, the suction / discharge pipe 63 connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is overlapped with the inner pipe 630 and the outer pipe 631 which are overlapped. The inner pipe 630 is configured in a pipe shape, and the distal end side of the inner pipe 630 is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 so that the flow of the sealer in the discharge cylinder 2 is at a position located in the discharge cylinder 2 of the cylinder wall. A communication port Y that leads to the path u is opened, and the outer pipe 631 is connected to the piston 61 that connects and communicates the base end side with the pump chamber p, and is connected to the piston 61 that expands and contracts the pump chamber p. A communication hole y is formed at a portion overlapping with the communication port Y that is opened in the inner pipe 630 when the inner pipe 630 is moved forward by a discharge operation by pushing in, and a blocking member z is formed on the cylindrical wall on the tip side from the communication hole y. Formed Shiragan characterized the door.
In the above-described sealer gun, the suction / discharge pipe 63 connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is superposed on the inner pipe 630, the outer pipe 631, and the outer peripheral side 632 surrounding the outer periphery. The outer pipe 631 is formed in a short cylinder shape that is short in the axial direction, and the tip end side is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 so that the inside of the discharge cylinder 2 is formed. A communication port Y that communicates with the flow path u of the sealer in the discharge cylinder 2 is opened in the positioned cylinder wall, and the inner pipe 630 is formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the outer pipe 631. The side Y is slidably inserted into the outer pipe 631, the base end side is fixedly connected to the block 62 of the pump chamber p, and the communication port Y opened in the outer pipe 631 when the piston 61 is pushed forward to move forward. Site to polymerize with , A communication hole y is provided, and a blocking member z for blocking the communication port Y is provided at a portion overlapping with the communication port Y when the piston 61 is moved backward by the retraction of the piston 61, and the outer pipe 632 has an inner diameter. Is formed in a long cylindrical shape corresponding to the outer diameter of the outer pipe 631, the front end side is fixedly connected to the outer periphery of the rear end side of the outer pipe 631, and the rear end side is fixedly connected to the block 62 of the pump chamber p. Sheilagan characterized by that.
In the sealer gun equipped with the above-described dripping prevention device B, the suction / discharge pipe 63 that is connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 has a short cylindrical inner side that is short in the axial direction. The pipe 630 and a tubular outer pipe 631 that is long in the axial direction are overlapped and connected to each other, and the inner pipe 630 is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 at the tip side. A communication port Y communicating with the flow path u of the sealer in the discharge cylinder 2 is opened in the cylinder wall located in the cylinder 2, and the outer pipe 631 is superposed on the outer circumference on the proximal end side of the inner pipe 630. The proximal end side is connected and communicated with the pump chamber p, and the inner pipe 630 is supported by being firmly connected to the front block 62 of the pump chamber p, and the inner end of the outer pipe 631 has a proximal end. The side is the pump device P A sealing rod L having a sealing portion x that is connected and connected to the piston 61 and seals a rear end opening of the inner pipe 630 on the front end side is connected to the sealing portion x when the piston 61 moves forward. A sealer gun that occupies a position for sealing the rear end opening of 630 and has a length that occupies a position for opening the rear end opening of the inner pipe 630 when the piston 61 moves backward. Is to raise.
本発明手段によれば、握りレバー５の握り込みを解放して、弁機構４を閉弁に作動させてシーラの吐出を停止させ、同時にポンプ装置Ｐを吸引作動させたときに、吸引・吐出パイプ６３の筒壁に開設した連通口Ｙが、ポンプ装置Ｐの吸引作動と連動する遮閉部材ｚにより遮閉されることで、吸引・吐出パイプ６３は、ボディａ内のシーラの流路ｕとは遮断されて、吐出筒２の筒先の吐出口２ａを介して吐出筒２の外部にだけ連通するようになる。これにより、吸引・吐出パイプ６３によるシーラの吸引が、吐出筒２内のシーラの流路ｕに残ったシーラは吸引せず、吐出筒２の筒先の吐出口２ａから吐出されて、その吐出口２ａの周辺に付着しているシーラだけを吸引するようになるので、ポンプ装置Ｐの吸引作動による吸引圧により液だれのシーラを吐出筒２内に引き込む効率が良くなり、液だれの除去・消失が効果的に得られるようになる。また、弁機構４を開弁してシーラを吐出させている状態時に、シーラの吸引・吐出パイプ６３への流入を阻止する封栓ロッドＬを設けて、吸引作動が、空の状態とした吸引・吐出パイプ６３を経て行われるようにしたときには、シーラの吐出筒２への流入が効率的に行われるようになって、引き込みの効率を良くする。
According to the means of the present invention, when the grip lever 5 is released, the valve mechanism 4 is operated to close the valve, the discharge of the sealer is stopped, and at the same time, the pump device P is operated for suction. The communication port Y opened in the cylindrical wall of the pipe 63 is blocked by a blocking member z interlocked with the suction operation of the pump device P, so that the suction / discharge pipe 63 is connected to the flow path u of the sealer in the body a. And is communicated only to the outside of the discharge cylinder 2 through the discharge port 2a at the end of the discharge cylinder 2. Thus, the suction of the sealer by the suction / discharge pipe 63 does not suck the sealer remaining in the flow path u of the sealer in the discharge cylinder 2, but is discharged from the discharge port 2a at the end of the discharge cylinder 2, and the discharge port Since only the sealer adhering to the periphery of 2a is sucked, the efficiency of drawing the dripping sealer into the discharge cylinder 2 by the suction pressure by the suction operation of the pump device P is improved, and the dripping is eliminated / disappeared. Can be obtained effectively. Further, when the valve mechanism 4 is opened and the sealer is discharged, a sealing rod L that prevents the sealer from flowing into the suction / discharge pipe 63 is provided so that the suction operation is in an empty state. When the discharge pipe 63 is used, the sealer can efficiently flow into the discharge cylinder 2 to improve the pull-in efficiency.
次に本発明の実施の態様を、実施例につき図面に従い詳述する。
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
図４は、本発明を実施せるシーラガンの全体の縦断した側面図である。図において、ａはボディ、１はそのボディａの基端側に設けた把持グリップ、２はボディａの先端側に設けた吐出筒、３は吐出筒２の筒先の吐出口２ａから吐出させるシーラをボディａ内に供給するよう把持グリップ１の下端部に接続した導入管、ｕは導入管３で供給されるシーラを吐出筒２に導くようボディａ内に設けたシーラの流路、４はその流路ｕを介して供給されるシーラの、吐出筒２の筒先の吐出口２ａの吐出をオン・オフ制御するよう流路ｕに設けた弁機構、５は、把持グリップ１の前面側に配位してボディａに軸支した握りレバー、５０は握りレバー５を把持グリップ１から離れた開放位置に向け復元回動させるよう付勢する復元バネ、５１は復元バネ５０の付勢に抗して、握りレバー５を把持グリップ１と共に握り込んで把持グリップ１に沿う近接位置に回動させる作動で、前記弁機構４を開弁に作動させ、握り込みを開放して復元バネ５０により開放位置に回動させる作動で、弁機構４を閉弁に作動させるよう、握りレバー５の回動作動と弁機構４の作動とを連繋する連繋機構、Ｐはボディａに組み付けた液だれ防止装置Ｂのポンプ装置、ｐはそのポンプ装置Ｐの拡縮するポンプ室、６３は基端側をポンプ室ｐに接続させて先端側を吐出筒２内に配置せるポンプ装置Ｐの吸引・吐出パイプを示し、これらの構成部材は、図２・図３に示している液だれ防止装置付きのシーラガンの対応する各構成部材と同様の構成のものである。
FIG. 4 is a longitudinal side view of the entire sealer gun embodying the present invention. In the figure, a is a body, 1 is a grip grip provided on the proximal end side of the body a, 2 is a discharge cylinder provided on the distal end side of the body a, and 3 is a sealer that discharges from a discharge port 2a at the end of the discharge cylinder 2. An inlet pipe connected to the lower end of the grip 1 so as to supply the inside of the body a, u is a flow path of a sealer provided in the body a so as to guide the sealer supplied by the inlet pipe 3 to the discharge cylinder 2, The valve mechanism 5 provided in the flow path u for controlling the on / off of the discharge port 2a at the tip of the discharge cylinder 2 of the sealer supplied through the flow path u is provided on the front side of the grip 1. A grip lever that is coordinated and pivotally supported on the body a, 50 is a restoring spring that urges the grip lever 5 to be restored and rotated toward an open position away from the grip 1, and 51 is resistant to the urging of the restoring spring 50. Grip the grip lever 5 together with the grip grip 1 The valve mechanism 4 is opened by the operation of rotating to the close position along the grip 1, and the valve mechanism 4 is closed by the operation of releasing the grip and rotating to the open position by the restoring spring 50. A linkage mechanism that links the pivoting action of the grip lever 5 and the action of the valve mechanism 4 so as to be actuated, P is a pump device of the dripping prevention device B assembled to the body a, and p is a pump that expands and contracts the pump device P. The chamber 63 indicates a suction / discharge pipe of the pump device P in which the base end side is connected to the pump chamber p and the tip end side is disposed in the discharge cylinder 2, and these constituent members are shown in FIGS. It is the thing of the structure similar to each corresponding member of the sealer gun with a dripping prevention apparatus.
これらの構成部材は、この実施例においては、弁機構４にあっては、筒状に成形されたボディａ内に、前後方向（図４において左右方向）にスライド自在に収蔵せしめたシャフト７の前端側（図４において左端側）に、該シャフト７に一体または一体的に連続させて弁軸４２を装設し、その弁軸４２の周面に、下流側と上流側とに分断した流路ｕの、下流側の流路ｕ’に対して連通する弁座口４１を形設し、この弁座口４１が、シャフト７の前方へのスライドによる弁軸４２の前方移動で、分断した流路ｕの上流側の流路ｕ”の端部に形設した弁口４０と接合する位置を占めることで、開弁の状態となって流路ｕを導通させ、シャフト７の後方へのスライドによる弁軸４２の後方移動で、弁座口４１が弁口４０から外れ、弁口４０を弁軸４２の周面により遮閉することで閉弁に作動するように構成してある。
In this embodiment, in the valve mechanism 4, these constituent members are stored in the cylindrical body a so as to be slidable in the front-rear direction (left-right direction in FIG. 4). A valve shaft 42 is installed on the front end side (left end side in FIG. 4) integrally or integrally with the shaft 7, and a flow separated into a downstream side and an upstream side on the peripheral surface of the valve shaft 42. A valve seat 41 that communicates with the flow path u ′ on the downstream side of the path u is formed, and the valve seat 41 is divided by the forward movement of the valve shaft 42 by sliding the shaft 7 forward. By occupying a position where the valve port 40 formed at the end of the flow path u ″ on the upstream side of the flow path u is joined, the valve u is opened and the flow path u is made conductive, and the shaft 7 is moved backward. When the valve shaft 42 is moved backward by the slide, the valve seat port 41 is disengaged from the valve port 40, and the valve port 40 is moved to the valve shaft 42. It is arranged to operate in the closing by closes shielding by the peripheral surface.
そして、この弁機構４の開弁・閉弁の作動を、握りレバー５の回動作動と連動連繋させる連繋機構５１は、ボビン状に成形してシャフト７に軸方向に摺動自在に嵌装した係合部材７０と、この係合部材７０を一定の位置より後方への摺動を規制するようシャフト７に設けたリング状の規制部材７１と、係合部材７０をこの規制部材７１と衝合する状態位置に押し込むようシャフト７と係合部材７０との間に張設した係合バネ７２と、握りレバー５の上端部に突起状に突設して係合部材７０に係合させた係合突起５２と、よりなり、握りレバー５を把持グリップ１と共に握り込んで把持グリップ１に近接して並行するよう後方に回動させると、突起状の係合突起５２が前方に回動してボビン状の係合部材７０を前方に押し出し、係合バネ７２によりシャフト７を前方にスライドさせて弁軸４２を前方に押し出し、弁軸４２に設けた弁座口４１を弁口４０と合致させて弁機構４を開弁に作動させる。また、握りレバー５の握り込みを解放すると、係合部材７０とボディａとの間に張設してある復元バネ５０により係合部材７０が後方に動いて係合する係合突起５２の作動で握りレバー５を、把持グリップ１から離れた開放位置に復元回動させ、同時に規制部材７１を介し係合部材７０と連結しているシャフト７が後方にスライドして、先端側の弁軸４２を後方に動かし、弁軸４２に設けた弁座口４１が弁口４０から外れた位置に動いて弁口４０を弁軸４２の周面で閉塞して閉弁に作動させるようにしてある。
A linkage mechanism 51 that links the opening / closing operation of the valve mechanism 4 with the turning operation of the grip lever 5 is formed into a bobbin shape and is slidably fitted in the shaft 7 in the axial direction. The engaging member 70, a ring-shaped restricting member 71 provided on the shaft 7 to restrict the rearward sliding of the engaging member 70 from a certain position, and the engaging member 70 against the restricting member 71. The engagement spring 72 stretched between the shaft 7 and the engagement member 70 so as to be pushed into the mating state position, and the upper end portion of the grip lever 5 protruded in a protruding shape and engaged with the engagement member 70. When the grip lever 5 is gripped together with the grip grip 1 and is rotated backward so as to be parallel to the grip grip 1, the protrusion-shaped engagement protrusion 52 is rotated forward. The bobbin-shaped engagement member 70 is pushed forward to the engagement spring 72. Ri extruding the valve shaft 42 by sliding the shaft 7 forward to the front, made to match the valve seat opening 41 provided in the valve shaft 42 and the valve port 40 to actuate the valve mechanism 4 in the valve opening. When the grip lever 5 is released, the engagement protrusion 52 is engaged by the engagement member 70 moving backward by the restoring spring 50 stretched between the engagement member 70 and the body a. Then, the grip lever 5 is restored and rotated to the open position away from the grip grip 1, and at the same time, the shaft 7 connected to the engaging member 70 via the restricting member 71 slides backward, and the valve shaft 42 on the front end side is slid. The valve seat 41 provided on the valve shaft 42 is moved to a position disengaged from the valve port 40 so that the valve port 40 is closed by the peripheral surface of the valve shaft 42 to be closed.
また、ボディａに組み付けた液だれ防止装置Ｂは、シャフト７の前端側に設けた弁軸４２の前端に、一体に連続させて設けたピストン６１と、このピストン６１が摺動自在に嵌合するシリンダ状に形成してボディａ内に装着せるケーシング６０と、このケーシング６０の前端側に設けたブロック６２と、前記ピストン６１の前後方向の作動によりそのピストン６１の前面とブロック６２の後面との間に形成される拡縮するポンプ室ｐに対して接続する吸引・吐出パイプ６３とにより、ピストン６１の押し込みで吐出作動し、ピストン６１の引き込みで吸引作動するポンプ装置Ｐを構成して、これをボディａに組み付け、このポンプ装置Ｐのポンプ室ｐに接続する吸引・吐出パイプ６３を、ボディａの先端部に設けた吐出筒２内に配置し、そのパイプ６３の先端開口を、吐出筒２の筒先の吐出口２ａの近傍位置に臨ませることで、ピストン６１の後退により吸引作動を行ったときに、吸引圧が、吸引・吐出パイプ６３を介し、吐出筒２の筒先の吐出口２ａの周辺に作用して、ピストン６１と一緒に後退する弁軸４２の動きで弁機構４が閉弁に作動していることにより吐出筒２の筒先の吐出口２ａに生じてくるシーラの液だれをポンプ室ｐに吸引して消失せしめるように液だれ防止装置Ｂを構成している。
Further, the dripping prevention device B assembled to the body a has a piston 61 provided integrally and continuously on the front end of the valve shaft 42 provided on the front end side of the shaft 7, and the piston 61 is slidably fitted. A casing 60 formed in a cylindrical shape and mounted in the body a, a block 62 provided on the front end side of the casing 60, and a front surface of the piston 61 and a rear surface of the block 62 by operation of the piston 61 in the front-rear direction. The pump device P that is discharged by the pushing of the piston 61 and sucked by the pulling of the piston 61 is constituted by the suction / discharge pipe 63 connected to the expanding and contracting pump chamber p formed between them. The suction / discharge pipe 63 connected to the pump chamber p of the pump device P is disposed in the discharge cylinder 2 provided at the tip of the body a, When the suction operation is performed by the retraction of the piston 61 by causing the tip opening of the nozzle 63 to face the position near the discharge port 2a at the tip of the discharge cylinder 2, the suction pressure is passed through the suction / discharge pipe 63, The outlet of the cylinder tip of the discharge cylinder 2 is acted on the periphery of the discharge outlet 2a at the cylinder tip of the discharge cylinder 2 and the valve mechanism 4 is closed by the movement of the valve shaft 42 that moves backward together with the piston 61. The dripping prevention device B is configured so that the liquid dripping of the sealer generated in 2a is sucked into the pump chamber p and disappears.
しかして、上述の如く構成されている液だれ防止装置付きのシーラガンにおいて、握りレバー５の握り込みを放し弁機構４を閉弁させてシーラの吐出を停止させたときに、吐出筒２の筒先の吐出口２ａの周辺に生じてくるシーラの液だれを、弁機構４の閉弁作動と連動して作動するポンプ装置Ｐの吸引作動により、吐出筒２の内腔を介しポンプ室ｐに吸引させて、除去・消失せしめるときの、そのシーラを吐出筒２内へ引き込む効率を良くするためにシーラガンに装備せしめる本発明手段は、基端側をポンプ装置Ｐのポンプ室ｐに接続させて吐出筒２内に配設する吸引・吐出パイプ６３については、それの先端側を吐出筒２の筒先の吐出口２ａに接続させて、該パイプ６３の内腔の吐出筒２内のシーラの流路ｕに対する連通を遮断し、吐出筒２の外部のシーラだけを吐出口２ａを介して吸引するようにしておく。
Thus, in the sealer gun with the dripping prevention device configured as described above, when the grip lever 5 is released and the valve mechanism 4 is closed to stop the discharge of the sealer, the cylinder tip of the discharge cylinder 2 is stopped. The liquid in the sealer generated around the discharge port 2a is sucked into the pump chamber p through the lumen of the discharge cylinder 2 by the suction operation of the pump device P that operates in conjunction with the valve closing operation of the valve mechanism 4. The present invention means that the sealer gun is equipped to improve the efficiency of drawing the sealer into the discharge cylinder 2 when removing / disappearing, and the discharge is performed by connecting the base end side to the pump chamber p of the pump device P. The suction / discharge pipe 63 disposed in the cylinder 2 is connected to the discharge port 2a at the end of the discharge cylinder 2 at the tip end thereof, and the flow path of the sealer in the discharge cylinder 2 in the lumen of the pipe 63 Shut off communication with u and discharge cylinder Keep only the external sealer to be sucked through the discharge port 2a.
また、握りレバー５を握り込み弁機構４を開弁させて行うシーラの吐出作動時における、吐出筒２内のシーラの流路ｕに導かれてくるシーラの吐出口２ａからの吐出は、吸引・吐出パイプ６３の筒壁に流路ｕに通ずる連通口Ｙを開設しておいて、その連通口Ｙを介しシーラを吸引・吐出パイプ６３内に導き、該パイプ６３内を経て吐出口２ａから吐出されるようにしておく。
The discharge from the sealer discharge port 2a guided to the flow path u of the sealer in the discharge cylinder 2 during the discharge operation of the sealer performed by holding the grip lever 5 and opening the valve mechanism 4 is a suction. A communication port Y communicating with the flow path u is opened on the cylindrical wall of the discharge pipe 63, and the sealer is guided into the suction / discharge pipe 63 via the communication port Y, and from the discharge port 2a through the pipe 63. It should be discharged.
さらに、この吐出筒２内のシーラの流路ｕからシーラを吸引・吐出パイプ６３の内腔を経て吐出口２ａから吐出させるために吸引・吐出パイプ６３の筒壁に開設しておく連通口Ｙには、それを開閉作動させる遮閉部材ｚを設けておき、この遮閉部材ｚを、弁機構４が開弁に作動してポンプ装置Ｐが吐出作動を行っているときには、連通口Ｙを開放する位置にあり、弁機構４が閉弁に作動してポンプ装置Ｐが吸引作動を行っているときは連通口Ｙを遮閉する位置にあるように、弁機構４・ポンプ装置Ｐの作動と連動するように連動連繋させておく。
Further, a communication port Y is provided in the cylindrical wall of the suction / discharge pipe 63 so that the sealer is discharged from the discharge port 2a through the lumen of the suction / discharge pipe 63 from the flow path u of the sealer in the discharge cylinder 2. Is provided with a closing member z for opening and closing it, and when the valve mechanism 4 is operated to open and the pump device P is performing a discharge operation, the closing member z is opened. The valve mechanism 4 and the pump device P are operated so as to be in a position to close the communication port Y when the valve device 4 is in the open position and the valve device 4 is closed and the pump device P is performing the suction operation. It is linked and linked to be linked to.
そして、これにより、ポンプ装置Ｐの吸引作動によるシーラの液だれの吸引が、吐出筒２内の流路ｕ中にあるボディａ内のシーラは吸引しないで、吐出筒２の外にあるシーラだけを吐出口２ａから吸引することで行われるようにして、液だれのシーラを吐出筒２内に引き込む効率を良くするように構成している手段である。
As a result, the suction of the liquid in the sealer due to the suction operation of the pump device P does not suck the sealer in the body a in the flow path u in the discharge cylinder 2, but only the sealer outside the discharge cylinder 2. This is a means configured to improve the efficiency of drawing the liquid sealer into the discharge cylinder 2 by sucking the liquid from the discharge port 2a.
この実施例は、具体的な構成としては、ポンプ装置Ｐのポンプ室ｐに接続させて吐出筒２内に配置せしめる吸引・吐出パイプ６３を、内側パイプ６３０と外側パイプ６３１とが重合して摺動自在に嵌合する二重パイプ状に構成し、外側パイプ６３１はそれの先端側を、吐出筒２の筒先の吐出口２ａに固定接続して、筒壁の吐出筒２内に位置する部位に、吐出筒２内のシーラの流路ｕに連通する連通口Ｙを開設し、内側パイプ６３０はそれの基端側を、ポンプ室ｐに接続連通せしめるとともに、ポンプ室ｐを拡縮させるピストン６１に連結し、筒壁の先端側で、ピストン６１の押し込みによる吐出作動により前方移動した状態時に前記外側パイプ６３１に開設せる連通口Ｙと重合する部位に連通穴ｙを開設し、その連通穴ｙより先端側を遮閉部材ｚに形成した構成として、これにより、握りレバー５の握り込みを解放して、シーラの吐出を停止したときの、ポンプ装置Ｐの吸引作動による吸引圧により、液だれのシーラを吐出筒２内に引き込む作動が、連通口Ｙを遮閉部材ｚで遮閉した状態で行われるようにして、シーラを吐出筒２内に引き込む効率を良くしている。
In this embodiment, as a specific configuration, a suction / discharge pipe 63 connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is slid by the inner pipe 630 and the outer pipe 631 overlapping. The outer pipe 631 is configured so as to be movably fitted, and the outer pipe 631 is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 so as to be located in the discharge cylinder 2 of the cylinder wall. In addition, a communication port Y that communicates with the flow path u of the sealer in the discharge cylinder 2 is opened, and the inner pipe 630 connects the base end side thereof to the pump chamber p, and the piston 61 expands and contracts the pump chamber p. And a communication hole y is formed at a position overlapping with the communication port Y to be opened in the outer pipe 631 when the piston 61 is pushed forward by a discharge operation by pushing the piston 61 on the distal end side of the cylindrical wall. Shield part on the tip side As a configuration formed at z, the gripper lever 5 is released and the discharge of the sealer is stopped, so that the dripping sealer is discharged into the discharge cylinder 2 by the suction pressure by the suction operation of the pump device P. The operation of pulling the sealer into the discharge cylinder 2 is performed in such a manner that the communication port Y is closed with the blocking member z, thereby improving the efficiency of drawing the sealer into the discharge cylinder 2.
図７・図８は、本発明手段を実施せるシーラガンの、第２の実施例の要部の縦断側面図を示している。この例は、握りレバー５の握り込みの解放作動で、弁機構４を閉弁させてシーラの吐出を停止させたときに生じてくるシーラの液だれを、付設した液だれ防止装置Ｂのポンプ装置Ｐの吸引作動による吸引圧で、吐出筒２内に引き込まれるときの、その吐出筒２内へのシーラの引き込みの効率を良くするのに、吐出筒２内に配設する吸引・吐出パイプ６３は、内側パイプ６３０と外側パイプ６３１とが重合して嵌合する二重管状に形成して、一方のパイプを吐出筒２の吐出口２ａに固定接続して、これの筒壁に吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、他方のパイプは、ポンプ装置Ｐの可動のピストン６１に対して接続・連結して可動に構成し、これの筒壁に前記連通口Ｙと重合することでその連通口Ｙを開放状態とする連通穴ｙと、前記連通口Ｙと重合することでその連通口Ｙを遮閉する遮閉部材ｚを設けて、ポンプ装置Ｐが吸引作動を行っているときは、連通口Ｙを遮閉して、吸引・吐出パイプ６３の吐出筒２内におけるシーラの流路ｕに対する連通を遮断して、シーラの吸引作動が、吐出筒２内に残留しているシーラは吸引せず、吐出筒２の吐出口２ａからだけを吸引する状態で行われるようにすることについては、前述した実施例１のものと変わりがないが、吐出筒２に対して固定接続する一方のパイプが内側パイプ６３０で、ピストン６１に対し連結・接続する他方のパイプが外側パイプ６３１となって、内・外に入れ換わっている例である。
7 and 8 are longitudinal side views of the main part of the second embodiment of the sealer gun that can implement the means of the present invention. In this example, the release of the grip lever 5 is operated to close the valve mechanism 4 and stop the discharge of the sealer. A suction / discharge pipe disposed in the discharge cylinder 2 in order to improve the efficiency of drawing the sealer into the discharge cylinder 2 when the apparatus P is drawn into the discharge cylinder 2 by the suction pressure generated by the suction operation of the apparatus P. 63 is formed in a double tubular shape in which the inner pipe 630 and the outer pipe 631 are overlapped and fitted, and one pipe is fixedly connected to the discharge port 2a of the discharge cylinder 2, and the discharge cylinder is connected to the cylinder wall thereof. A communication port Y communicating with the flow path u of the sealer in 2 is opened, and the other pipe is connected and connected to a movable piston 61 of the pump device P so as to be movable. Communication hole that opens the communication port Y by overlapping with the port Y And a blocking member z that blocks the communication port Y by overlapping with the communication port Y, and when the pump device P is performing a suction operation, the communication port Y is blocked and suction is performed. The communication between the discharge pipe 63 and the flow path u of the sealer in the discharge cylinder 2 is blocked, and the suction operation of the sealer does not suck the sealer remaining in the discharge cylinder 2 but the discharge port 2a of the discharge cylinder 2 However, one pipe that is fixedly connected to the discharge cylinder 2 is an inner pipe 630 that is connected to the piston 61. On the other hand, the other pipe to be connected / connected is an outer pipe 631 and is exchanged inside / outside.
図面に従い具体的に説明すれば、図４にあるよう構成した液だれ防止装置付きのシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３は、内側パイプ６３０と外側パイプ６３１とが重合して摺動自在に嵌合する二重パイプ状に構成し、内側パイプ６３０は、先端側を吐出筒２の筒先の吐出口２ａに固定接続し、筒壁の吐出筒２内に位置する部位に、吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、外側パイプ６３１は、基端側をポンプ室ｐに接続連通せしめるとともに、ポンプ室ｐを拡縮させるピストン６１に連結・接続し、この外側パイプ６３１の筒壁の先端側で、ピストン６１の押し込みによる吐出作動により前方移動した状態時において前記内側パイプ６３０に開設せる連通口Ｙと重合する部位には、連通穴ｙを開設し、その連通穴ｙより先端側の筒壁を遮閉部材ｚに形成してある構成のものである。この例のシーラガンは、吐出筒２の吐出口２ａに先端側を固定するパイプを短く構成し得ることから、内側パイプ６３０と外側パイプ６３１との重合面を狭くでき、摺動抵抗を小さくできる。
Specifically, according to the drawing, in the sealer gun with a dripping prevention device configured as shown in FIG. 4, the suction / discharge pipe 63 connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is The inner pipe 630 and the outer pipe 631 are superposed and slidably fitted to form a double pipe, and the inner pipe 630 is fixedly connected to the discharge port 2a at the end of the discharge cylinder 2 at the tip side. A communication port Y communicating with the flow path u of the sealer in the discharge cylinder 2 is opened at a portion located in the discharge cylinder 2 of the cylinder wall, and the outer pipe 631 is connected and communicated with the pump chamber p at the base end side. The pump chamber p is connected and connected to a piston 61 that expands and contracts, and is opened in the inner pipe 630 when it is moved forward by a discharge operation by pushing the piston 61 on the distal end side of the cylindrical wall of the outer pipe 631. The site of polymerizing with passing port Y, opened communication hole y, is of the configuration is formed in closure site material z shielding the distal end side of the cylindrical wall from the communication hole y. In the sealer gun of this example, since the pipe that fixes the tip end side to the discharge port 2a of the discharge cylinder 2 can be configured short, the overlapping surface of the inner pipe 630 and the outer pipe 631 can be narrowed, and the sliding resistance can be reduced.
図９、図１０は、さらに別の実施例の要部の縦断側面図を示している。この例は、ポンプ装置Ｐの吸引作動で、吐出筒２の吐出口２ａからシーラを吐出筒２内に引き込むときの、そのシーラの引き込みの効率を良くするため、吸引・吐出パイプ６３を、内側パイプ６３０と外側パイプ６３１とが重合して嵌合する二重管状に形成して、それの一方を吐出筒２の吐出口２ａに接続し、他方をピストン６１に接続連結し、吐出口２ａに接続した側のパイプには吐出筒２内のシーラの流路ｕに対し連通する連通口Ｙを形設し、ピストン６１に接続した側の他方のパイプには、前記連通口Ｙとの重合により、吸引・吐出パイプ６３の内腔がその連通靴Ｙを介し吐出筒２内の流路ｕに対し連通状態とする連通穴ｙと、前記連通口Ｙとの重合により、その連通口Ｙを遮閉して、吸引・吐出パイプ６３の内腔と吐出筒２内の流路ｕとの連通を遮断する遮閉部材ｚとを設けて、ポンプ装置Ｐが吸引作動を行ったときの吸引圧が、吐出筒２のシーラの流路ｕに作用しないようにして、吐出筒２の吐出口２ａからだけシーラを吸引するようにすることについては、前述の実施例のものと変わりがない。
9 and 10 show longitudinal side views of essential parts of still another embodiment. In this example, when the sealer is drawn into the discharge cylinder 2 from the discharge port 2a of the discharge cylinder 2 by the suction operation of the pump device P, the suction / discharge pipe 63 is arranged on the inner side in order to improve the efficiency of drawing the sealer. The pipe 630 and the outer pipe 631 are overlapped and formed into a double tubular shape, one of which is connected to the discharge port 2a of the discharge cylinder 2, the other is connected to the piston 61 and connected to the discharge port 2a. A communication port Y communicating with the flow path u of the sealer in the discharge cylinder 2 is formed in the pipe on the connected side, and the other pipe on the side connected to the piston 61 is overlapped with the communication port Y. The communication port Y is blocked by polymerization of the communication hole Y and the communication port Y through which the lumen of the suction / discharge pipe 63 communicates with the flow path u in the discharge cylinder 2 via the communication shoe Y. Close the lumen of the suction / discharge pipe 63 and the flow path in the discharge cylinder 2 A blocking member z that blocks communication with the discharge cylinder 2 so that the suction pressure when the pump device P performs the suction operation does not act on the flow path u of the sealer of the discharge cylinder 2. The suction of the sealer only from the discharge port 2a is the same as that of the above-described embodiment.
しかし、吐出筒２の吐出口２ａに接続連通する側のパイプは、軸方向に短い短筒状に形成して、それの後端側に、長筒状に形成した別体のパイプの先端側を嵌合して接続することで、継ぎパイプ状に形成し、この長筒状のパイプの後端側を、ボディａに一体的に組み付けてあるポンプ装置Ｐのブロック６２に固着連結することで、この吐出筒２の吐出口２ａに接続連結する側のパイプの支持を強固なものとしている。
However, the pipe on the side connected to the discharge port 2a of the discharge cylinder 2 is formed in a short cylindrical shape that is short in the axial direction, and the distal end side of a separate pipe formed in the long cylindrical shape on the rear end side thereof. By connecting and connecting, the rear end side of the long cylindrical pipe is fixedly connected to the block 62 of the pump device P assembled integrally with the body a. The pipe on the side connected to the discharge port 2a of the discharge cylinder 2 is firmly supported.
そして、ピストン６１に対し接続する側のパイプは、この吐出筒２の吐出口２ａに接続する側のパイプの内腔に対応する外径に形成して摺動自在に嵌合して、内側パイプ６３０に構成し、前記吐出口２ａに接続するパイプを外側パイプ６３１に構成し、継ぎ合わせた長筒状のパイプ６３２が前記外側パイプ６３１及び内側パイプ６３０のさらに外側を外周パイプ６３２で囲うようにしてあって、これにより三重管状を呈するようにしている例である。
The pipe on the side connected to the piston 61 is formed to have an outer diameter corresponding to the lumen of the pipe on the side connected to the discharge port 2a of the discharge cylinder 2 and is slidably fitted to the inner pipe. 630, and the pipe connected to the discharge port 2a is configured as the outer pipe 631, and the joined long cylindrical pipe 632 surrounds the outer pipe 631 and the inner pipe 630 with the outer peripheral pipe 632. Thus, this is an example in which a triple tubular shape is exhibited.
液だれ防止装置Ｂの構成部材との関係において具体的に説明すれば、上記の液だれ防止装置Ｂ付きのシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３は、内側パイプ６３０と外側パイプ６３１と外周を囲う外周側パイプ６３２とが三重に重合する三重パイプ状に構成する。
If it demonstrates concretely in relation to the structural member of the dripping prevention apparatus B, in the sealer gun with said dripping prevention apparatus B, it connects with the pump chamber p of the pump apparatus P, and is arrange | positioned in the discharge cylinder 2. FIG. The suction / discharge pipe 63 is configured in a triple pipe shape in which the inner pipe 630, the outer pipe 631, and the outer pipe 632 surrounding the outer circumference are superposed in triplicate.
外側パイプ６３１は、軸方向に短い短筒状に形成して先端側を吐出筒２の筒先の吐出口２ａに固着連結し、吐出筒２内に位置する筒壁に吐出筒２内のシーラの流路ｕに対して連通する連通口Ｙを開設しておく。
The outer pipe 631 is formed in a short short tube shape in the axial direction, the tip end side is fixedly connected to the discharge port 2a at the tube tip of the discharge tube 2, and the sealer in the discharge tube 2 is attached to the tube wall located in the discharge tube 2. A communication port Y communicating with the flow path u is opened.
内側パイプ６３０は、前記外側パイプ６３１の内径に対応する外径に形成して、先端側を前記外側パイプ６３１内に嵌合させ、基端側をポンプ装置Ｐのピストン６１に接続連結し、先端側の筒壁には、ピストン６１の押し込みにより前方移動した状態時に前記連通口Ｙと重合する部位に連通穴ｙを開設し、ピストン６１の引き込みにより後方移動した状態時に前記連通口Ｙと重合する部位に、その連通口Ｙを遮閉する遮閉部材ｚを設ける。
The inner pipe 630 is formed to have an outer diameter corresponding to the inner diameter of the outer pipe 631, the distal end side is fitted into the outer pipe 631, the proximal end side is connected to the piston 61 of the pump device P, and the distal end is connected. The side cylindrical wall is provided with a communication hole y at a position where it overlaps with the communication port Y when the piston 61 is pushed forward, and overlaps with the communication port Y when the piston 61 is moved backward. A blocking member z that blocks the communication port Y is provided at the site.
外周側パイプ６３２は、内径が前記短筒状の外側パイプ６３１の外径に対応する長筒状に形成して、それの先端側を前記外側パイプ６３１の後端側の外周に嵌合して固着連結し、後端側をポンプ装置Ｐのポンプ室ｐのブロック６２に固着連結して、外側パイプ６３１を支持せしめる、という構成のものである。
The outer peripheral side pipe 632 is formed in a long cylindrical shape whose inner diameter corresponds to the outer diameter of the short cylindrical outer pipe 631, and the front end side thereof is fitted to the outer periphery of the rear end side of the outer pipe 631. The structure is such that the outer pipe 631 is supported by being fixedly connected and the rear end side being fixedly connected to the block 62 of the pump chamber p of the pump device P.
この実施例は、吐出筒２の吐出口２ａに先端側を接続する外側パイプ６３１を短く形成して、内側パイプ６３０との摺動面を狭くできるので摺動抵抗を小さくできる。
In this embodiment, the outer pipe 631 that connects the tip end side to the discharge port 2a of the discharge cylinder 2 is formed short, and the sliding surface with the inner pipe 630 can be narrowed, so that the sliding resistance can be reduced.
図１１、図１２は、さらに異なる実施例の要部の縦断側面図を示している。
この実施例は、前述の各実施例のものが、弁機構４を閉弁に作動させてシーラの吐出を停止させたときに生じてくるシーラの液だれを、弁機構４の閉弁作動に連動するポンプ装置Ｐの吸引作動による吸引圧で、吐出筒２内に引き込んでポンプ装置Ｐのポンプ室ｐに吸引させて除去するようにするときの、シーラを吐出筒２内に引き込む効率を良くするのに、ポンプ装置Ｐの吸引作動による吸引圧が、吐出筒２内のシーラの流路ｕには作用しないよう、吸引・吐出パイプ６３に設けた連通口Ｙを遮閉部材ｚにより閉塞して、流路ｕ中にあるボディａ内のシーラは吸引しないで、吐出筒２の筒先の吐出口２ａからだけシーラを吸引するようにしているのに対し、ポンプ装置Ｐが吸引作動を行ったときの吸引圧が、吸引・吐出パイプ６３の内腔にシーラが存在しない空の状態のところに作用するようにしておいて、吸引圧によるシーラの吐出口２ａからの流入が、抵抗なく効率的に行われることで、シーラの吐出筒２への引き込みの効率を良くするようにしている例である。
FIG. 11 and FIG. 12 show longitudinal side views of the main part of still another embodiment.
In this embodiment, the liquid leakage of the sealer generated when the valve mechanism 4 is operated to close the valve and the discharge of the sealer is stopped is used for the valve mechanism 4 to close the valve. Efficient efficiency of drawing the sealer into the discharge cylinder 2 when it is drawn into the discharge cylinder 2 and sucked into the pump chamber p of the pump apparatus P and removed by the suction pressure generated by the suction operation of the pump apparatus P that is linked. Therefore, the communication port Y provided in the suction / discharge pipe 63 is closed by the blocking member z so that the suction pressure by the suction operation of the pump device P does not act on the flow path u of the sealer in the discharge cylinder 2. Thus, the sealer in the body a in the flow path u is not sucked, but the sealer is sucked only from the discharge port 2a at the end of the discharge cylinder 2, whereas the pump device P performs the suction operation. The suction pressure is applied to the lumen of the suction / discharge pipe 63. The sealer operates in an empty state where no sealer exists, and the flow of the sealer from the discharge port 2a by the suction pressure is efficiently performed without resistance, so that the sealer can be drawn into the discharge cylinder 2. This is an example of improving efficiency.
この実施例は、上述の液だれ防止装置Ｂを装備せるシーラガンにおいて、ポンプ装置Ｐのポンプ室ｐに接続せしめて吐出筒２内に配設する吸引・吐出パイプ６３は、軸方向に短い短筒状に形成した内側パイプ６３０と軸方向に長い長筒状に形成した外側パイプ６３１とを重合して接続した継ぎパイプ状に構成し、内側パイプ６３０は、先端側を吐出筒２の筒先の吐出口２ａに固定接続し、吐出筒２内に位置する筒壁に吐出筒２内のシーラの流路ｕに通ずる連通口Ｙを開設し、外側パイプ６３１は先端側を前記内側パイプ６３０の基端側の外周に重合させて接続固着し、基端側をポンプ室ｐに接続連通させるとともに、ポンプ室ｐのブロック６２に固着連結する。そして、該外側パイプ６３１の内腔には、基端側が、前記ポンプ装置Ｐのピストン６１に接続連結し、先端側に、前記内側パイプ６３０の後端開口部を封栓する封栓部ｘを具備する封栓ロッドＬを、ピストン６１の前方移動時に封栓部ｘが封栓位置を占めピストン６１の後方移動時に開封位置を占める長さに形成して配設し、それの突出端部を前記短筒状の内側パイプ６３０に出入自在に嵌挿せしめた構成としたものである。
In this embodiment, in the sealer gun equipped with the above-mentioned dripping prevention device B, the suction / discharge pipe 63 connected to the pump chamber p of the pump device P and disposed in the discharge cylinder 2 is a short cylinder short in the axial direction. The inner pipe 630 formed in the shape of a pipe and the outer pipe 631 formed in a long cylindrical shape that is long in the axial direction are connected to form a splice pipe. A communication port Y that is fixedly connected to the outlet 2 a and communicates with the flow path u of the sealer in the discharge cylinder 2 is opened in the cylinder wall located in the discharge cylinder 2, and the outer pipe 631 has a distal end on the base end of the inner pipe 630. The base end side is connected to and communicated with the pump chamber p, and is fixedly coupled to the block 62 of the pump chamber p. The proximal end of the outer pipe 631 is connected to and connected to the piston 61 of the pump device P, and the sealing portion x for sealing the rear end opening of the inner pipe 630 is connected to the distal end. The sealing rod L provided is formed and arranged in such a length that the sealing portion x occupies the sealing position when the piston 61 moves forward, and occupies the opening position when the piston 61 moves backward, and a protruding end portion thereof is provided. The short pipe-like inner pipe 630 is configured to be freely inserted and removed.
この構成により、握りレバー５を握り込み弁機構４を開弁させてシーラを吐出させたときは、同時に作動するポンプ装置Ｐの吐出作動で、封栓ロッドＬが前方に移動して内側パイプ６３０の後端開口部を封栓部ｘで塞ぎ、シーラが流路ｕから連通口Ｙを経て吐出口２ａから吐出されていくときに、そのシーラが、外側パイプ６３１内に流入するのを阻止して、この外側パイプ６３１内を空の状態に保持する。握りレバー５の握り込みを放して、弁機構４を閉弁に作動させ、シーラの吐出を停止させたときは、同時に作動するポンプ装置Ｐの吸引作動で、封栓ロッドＬが後退して、内側パイプ６３０の後端開口部が開放し、吐出口２ａからシーラが空の状態の外側パイプ６３１を経てポンプ室ｐに引き込まれるようになる。この手段は、ポンプ装置Ｐの吸引作動による吸引圧で、シーラを吐出口２ａから吐出筒２内に引き込むときに、引き込まれたシーラが、殆ど抵抗なくポンプ室ｐに向け流動していくようになるので、連通口Ｙを介して流路ｕ内から引き込むシーラの量を少なくし、吐出口２ａの外からのシーラの引き込みの効率を良くする。連通口Ｙは、短筒状の内側パイプ６３０の内周面に沿う環状に形成して、封栓ロッドＬの先端から放射方向に突出するステーに支持せしめて封栓ロッドＬに取り付けた環状の遮閉部材ｚによって、封栓ロッドＬの作動に連動して開閉制御される。
With this configuration, when the grip lever 5 is grasped and the valve mechanism 4 is opened to release the sealer, the sealing rod L moves forward by the discharge operation of the pump device P that operates simultaneously, and the inner pipe 630 is moved. The rear end opening is closed with a sealing part x, and when the sealer is discharged from the discharge port 2a through the communication port Y from the flow path u, the sealer is prevented from flowing into the outer pipe 631. Thus, the inside of the outer pipe 631 is kept empty. When the grip lever 5 is released and the valve mechanism 4 is operated to close the valve and the discharge of the sealer is stopped, the sealing rod L is retracted by the suction operation of the pump device P that operates simultaneously, The rear end opening of the inner pipe 630 is opened, and the sealer is drawn from the discharge port 2a into the pump chamber p through the outer pipe 631 in an empty state. This means is a suction pressure generated by the suction operation of the pump device P so that when the sealer is drawn into the discharge cylinder 2 from the discharge port 2a, the drawn sealer flows toward the pump chamber p with almost no resistance. Therefore, the amount of the sealer drawn from the flow path u through the communication port Y is reduced, and the efficiency of drawing the sealer from the outside of the discharge port 2a is improved. The communication port Y is formed in an annular shape along the inner peripheral surface of the short cylindrical inner pipe 630 and is supported on a stay protruding radially from the tip of the sealing rod L and attached to the sealing rod L. The closing member z is controlled to open and close in conjunction with the operation of the sealing rod L.
