JP3983647B2

JP3983647B2 - Chemical spraying device

Info

Publication number: JP3983647B2
Application number: JP2002314160A
Authority: JP
Inventors: 昌美三上
Original assignee: 株式会社永田製作所
Priority date: 2002-10-29
Filing date: 2002-10-29
Publication date: 2007-09-26
Anticipated expiration: 2022-10-29
Also published as: JP2004148160A

Description

【０００１】
【発明が属する技術分野】
本発明は、竿状に形成した機体の手元側に、自在に機体を操作するための把持部と、手動または動力でポンプを圧縮作動させる噴霧機の吐出管に対し接続ホースで接続する接続口と、その接続ホースにより導かれる薬液の流れを制御する操作レバーを設け、先端側には、竿状の機体の内腔の導管路を介して送出される薬液を噴霧する噴頭を設ける形態の薬液の散布装置についての改良に関する。
【０００２】
【従来の技術】
上述の形態の薬液の散布装置Ａは、従前のものにあっては、通常、図１にあるように、手元側の操作部ａと中間のノズル管ｂと先端側の噴頭部ｃとを継ぎ合わせるように接続して、いわゆる噴霧竿の形態に形成してある。
【０００３】
この散布装置Ａを構成する操作部ａ・ノズル管ｂ・噴頭部ｃは、操作部ａにあっては、それの内部に導管路を設けて、その導管路の外端側に、手動または動力によりポンプを圧縮作動させて薬液を吐出する噴霧機の吐出口に対し送液ホースＨを介して接続させるための接続口１０を設け、外面側には、手の掌で握り込める把持部１１および前記内部の導管路に組み込んでおく弁機構を作動させる操作レバー１２を設けて、把持部１１を手で握って操作し、かつ、操作レバー１２を把持部１１を握った手の指で操作して弁機構を制御するよう構成してある。
【０００４】
また、中間のノズル管ｂにあっては、図２にあるように、それの基端側に設けてある接続口２ａを、前記操作部ａの先端側に露出させて設けた導管路の先端側の接続口１０に接合して、そのノズル管ｂの基端側に嵌挿しておく袋ナット２０を接続口１０の外周に設けた雄ネジに締着することで操作部ａに対し接続して継ぎ合わせ、先端側には、噴頭部ｃの基端に設けた雌ネジ３０に螺合するスリーブ付きの雄ネジ２１を嵌挿しておいて、ノズル管ｂの先端の接続口を噴頭部ｃの基端側の接合口に接合した状態から、このスリーブ付きの雄ネジ２１を噴頭部ｃの雌ネジ３０に螺合して締結していくことで、噴頭部ｃに接続・連結するようにしてある。
【０００５】
また、噴頭部ｃにあっては、それのボディに枝管状のノズル取付口３１を設けておき、これにノズル３２を螺合して取り付けるようにしている。
【０００６】
そして、これにより、操作部ａの外端の接続口に、噴霧機の吐出口に接続する送液ホースＨに接続させた状態において、その操作部ａの把持部１１を手で持ち、送液ホースＨを手繰り出しながら先端の噴頭部ｃを所定の場所に位置させて、操作レバー１２を操作することで先端の噴頭部ｃに設けたノズル３２から噴出する薬液をそのノズル３２が向かう方向に噴霧していくようにしている。
【０００７】
そして、この噴霧作業において、先端の噴頭部ｃのノズル３２からの薬液の噴霧方向を、例えば、図１にあるように、操作部ａを握り込む操作レバー１２が下面側に位置する状態で、先端の噴頭部ｃに取り付けたノズル３２からの薬液の噴出方向が上方に向かう方向となっている状態から、側方または下方に向かう方向となるように、変更する場合には、ノズル管ｂの基端の袋ナット２０の締め付けを緩めて、ノズル管ｂを操作部ａに対して回転させ、これによりノズル管ｂの先端に接続・連結している噴頭部ｃを一緒に回転させて、それに取り付けてあるノズル３２が横方向または下方に向かう状態とすることで行うようにしている。
【０００８】
【発明が解決しようとする課題】
上述の形態の薬液の散布装置Ａは、手元側の操作部ａの把持部１１を手で把持して、ノズル管ｂ先端の噴頭部ｃのノズル３２から噴出する薬液を、植物体の病害虫の駆除を行うべき個所に散布していく散布作業を行う際に、ノズル３２からの薬液の吐出方向の変更調節をするのが厄介な問題がある。
【０００９】
これは、このノズル３２からの薬液の吐出方向を変更するには、薬液の散布作業を一たん停め、操作レバー１２の操作によって、弁機構を閉弁位置に切り換えて、薬液の送り出しを操作部ａ内において遮断し、その状態において、ノズル管ｂの基端側の袋ナット２０の締め付けを緩めて、ノズル管ｂを操作部ａに対し所望の角度回転させ、それによりノズル３２の薬液を吐出する方向を変更した後に、袋ナット２０を締め付けて、ノズル管ｂを操作部ａの導管路に対し接続連通させ、その状態から操作レバー１２の操作により弁機構を開弁し、これにより散布作業を再開するという面倒な工程を要すること、しかも、散布作業を一たん停止しなければならないことから作業能率の低下をもたらすようになること、さらに、噴頭部ｃのノズル３２からの薬液の吐出方向の変更を、弁機構の閉弁により導管路を遮断して行うことから、ノズル３２の噴頭部ｃからの突出方向を変更させただけにとどまり、弁機構を開弁して実際に薬液を吐出させたときに、ノズル３２からの薬液の噴射方向が、望んだ方向とは異なる場合があり、そのための微調整には、もう一度同じ工程を繰り返さなければならない、という問題である。
【００１０】
本発明は、従前の薬液の散布装置に生じている上述の問題を解決するためになされたものであって、操作部を把持してノズル管の先端側に設けた噴頭部のノズルから薬液を噴出させて散布作業を行っているときの、ノズルからの薬液の噴出方向の変更が、作業を中断することなく、かつ、袋ナットの緩めと締結の操作を要さずに、簡単な操作で行え、しかも、噴頭部のノズルの噴射方向の微調整が薬液を噴射させている状態で行えるようにする新たな手段を提供することを目的とする。
【００１１】
【課題を解決するための手段】
本発明においては、把持部とノズル管と噴頭部とを接続連結して噴霧竿状の薬液の散布装置を構成する際、把持部とノズル管の基端との接続・連結は、従前手段のように、袋ナットを用いてもよいが、ノズル管の先端に設ける雄ネジ金具を噴頭部の基端側に設ける雌ネジに螺合することで行うノズル管と噴頭部との連結部については、ノズル管と噴頭部との連結が行われた状態において、噴頭部がノズル管に対してノズル管の軸心線中心に、所望の角度量の回転が可能となり、かつ、回転した状態位置に保定されるようにする。
【００１２】
このために、ノズル管の先端側に設ける雄ネジ金具は、それの基端側に外径をノズル管の内径より小径とした軸筒部を連続させて設け、その軸筒部の外端側に外径がノズル管の内径に対応するよう拡径した拡径筒部を連続させて設け、この拡径筒部の外周面にＯリングの嵌合溝を形設して、ここにＯリングを嵌装しておく。
【００１３】
また、この雄ネジ金具を先端側に設けるノズル管は、絞り加工を可能とする金属材により所定の内径の管に成形しておく。
【００１４】
そして、このノズル管の先端側の開口端部の内腔に、前述の雄ネジ金具の基端側に形設した拡径筒部と軸筒部とを嵌挿し、拡径筒部の外周に嵌装したＯリングの外周面をノズル管の内周面に圧接させて、これによりノズル管の内腔と雄ネジ金具の内腔とを外部に対する水密を保持させた状態として接続する。
【００１５】
次いで、この状態において、ノズル管の先端側に、それを雄ネジ金具の軸筒部の外周面に向け絞り込む絞り加工の成形加工を施し、この加工で、ノズル管の先端部が雄ネジ金具の拡径筒部を抱え込むようにし、雄ネジ金具をノズル管に対しそれの軸心線中心とする回転が許容された状態で連結するようにし、この回転が、前述の水密保持用のＯリングの接触面の摩擦抵抗によって規制を受けるようにする。
【００１６】
そして、これにより、噴頭部は、それに、ノズル管の軸心線中心とする周方向の負荷を加えることで、Ｏリングの接触面の摩擦抵抗に抗して回転し、その負荷の解放で再び摩擦抵抗により回転した位置に保持されるようになって、この噴頭部のノズル管に対する回転で、噴頭部に取り付けてあるノズルの薬液の噴射方向の変更が行われるようにする。
【００１７】
この手段によれば、噴頭部に取り付けたノズルからの薬液の噴射方向を、所定の姿勢に把持した把持部を基準に所望の方向に変更するのが、散布作業を中断することなく、噴頭部を回転させるだけの簡略な操作で行えるようになる。
【００１８】
【発明の実施の形態】
次に本発明の実施の態様を、図示する実施例について、図面に随い詳述する。実施例の説明に用いる符号は、従来手段のものと同じ構成の部材については、同一の符号を用いるものとする。
【００１９】
図３は、本発明手段を実施せる薬液の散布装置Ａの全体の側面図で、同図において、ａは操作部、ｂはノズル管、ｃは噴頭部を示す。
【００２０】
把持部ａは、図１および図２に示している従前の噴霧竿の形態の薬液の散布装置Ａにおける操作部ａと同様に構成してよいものであり、内部に導管路を具備する筒状のボディ１を成形し、そのボディ１の外端側には、前記内部の導管路を、別体の噴霧機の薬液の吐出口に送液ホースＨを介して接続させるための接続口１０を設け、そのボディ１の外周には把持部１１を形成し、ボディ１の内部には、前記接続口１０から導入する薬液の流れを制御する弁機構を組み込み、この弁機構の閉弁および開弁の作動を操作する操作レバー１２を、ボディ１の下面側に配位して支軸１３により回動するよう軸支し、ボディ１の内端側にはノズル管ｂの基端と接続する接合口とノズル管ｂ接続用の雄ネジ１４とを設けて構成している通常の形態のものである。
【００２１】
ノズル管ｂは、金属材で竿状のパイプを成形し、それの基端側の開口端を前述の操作部ａの内端側に設けた接合口に接合して、基端側の外周に予め嵌挿しておくナット２３を、操作部ａの内端の雄ネジ１４に螺合して締結することで操作部ａに接続して継ぎ合わせる通常のものであるが、先端側に装備せしめる噴頭部ｃの接続用の雄ネジ金具ｗを、このノズル管ｂの絞り成形加工により取り付け保持せしめるために、この絞り成形加工を可能とするように材質および肉厚が選定され設定してある。
【００２２】
そして、このノズル管ｂの先端に、噴頭部ｃの取付用に装備せしめる雄ネジ金具ｗは、図５および図６にあるように、基端側にはノズル管ｂの内径よりも外径が少し小径となる軸筒部４０を連続させて設け、それの外端側にノズル管ｂの内径に対応する外径の拡径筒部４１をさらに連続させて形設し、かつ、拡径筒部４１の外周面には、Ｏリング５を嵌装する環状溝４２を形設した構造のものに成形してある。
【００２３】
そしてまた、この雄ネジ金具ｗとノズル管ｂとの連結は、雄ネジ金具ｗの軸筒部４０とそれに連続する拡径筒部４１とを、それの拡径筒部４１の外周の環状溝４２内にＯリング５を嵌装した状態として、ノズル管ｂの先端側の開口からそれの内腔に嵌挿し、その状態からノズル管ｂの先端側で軸筒部４０の外周側に位置する部位のノズル管ｂの管壁に、拡径筒部４１に対し縊れ込んだ軸筒部４０の外周面に向けて絞り込む絞り成形加工を施し、この加工によって、ノズル管ｂの管壁が、拡径筒部４１を、小径の軸筒部４０の周面で形成する頸部に抱え込むようにして、この雄ネジ金具ｗをノズル管ｂの先端部に回転を許容する状態として連結保持せしめ、これにより、この雄ネジ金具ｗが、Ｏリング５によって外部との水密が保持された状態で、ノズル管ｂの内腔に対し接続連通し、かつ、この水密を保持するＯリング５の接触面の摩擦力でノズル管ｂに対する回転が規制されて所定の回転位置に保持され、回転方向に負荷を与えることで回転が可能となるようにしてある。
【００２４】
噴頭部ｃは、中空に形成して内部に導管路を装備せしめたボディの基端側に、ノズル管ｂの先端の接続口と接続する接続口およびノズル管の先端側に設ける雄ネジ金具ｗに螺合して該噴頭部ｃをノズル管ｂに接続するための雌ネジ３０とを設け、外周面には内部の導液路に通ずるノズル取付口３１・３１を枝管状に設けて、これらにノズル３２をそれぞれに螺合して取り付けることで、ノズル管ｂにセットされるようにしてあるもので、それの前記雌ネジ３０をノズル管ｂの雄ネジ金具ｗに締結してノズル管ｂに接続したときに、ノズル３２からの薬液の噴射方向が、例えば、図３にあるように、把持部ａに設けた操作レバー１２に対し反対の上向きとなるよう、操作部ａの姿勢を基準とした所定の方向にセットされるようになる通常のものであり、従来のものと同様に構成してよいものである。
【００２５】
これらにより組み立てられる薬液の散布装置Ａは、操作部ａを把持した一方の手で操作レバー１２を一緒に握り込んで弁機構を作動させ、薬液を噴頭部ｃのノズル３２から噴射させて散布作業を行っているときに、噴頭部ｃを他方の手で所望の角度量だけ回動させれば、ノズル３２からの薬液の噴射方向が、例えば、図７にあるように下向きとなって、操作部ａの姿勢を基準に所望の方向に変更されるようになる。
【００２６】
【発明の効果】
以上説明したように、本発明手段においては、ノズル管ｂの先端側に取り付けてある噴頭部ｃが、ノズル管ｂに対しＯリング５により水密に保持させた状態で回転自在に接続し、かつ、その水密を保持するＯリング５の接触面の摩擦により所望の回転位置に保定されるようにしているのだから、薬液の散布作業中に、噴頭部ｃをノズル管ｂに対し回転させてやることで、噴頭部ｃに取り付けたノズル３２からの薬液の噴射方向の変更調節が行えるようになる。
【図面の簡単な説明】
【図１】従前の噴霧竿の形態の薬液の散布装置の側面図である。
【図２】同上のノズル管の側面図である。
【図３】本発明手段による噴霧竿の形態の薬液の散布装置の側面図である。
【図４】同上のノズル管の側面図である。
【図５】同上のノズル管の先端部分の、雄ネジ金具を取り付ける前の状態における一部破断した側面図である。
【図６】同上のノズル管の先端部分の、雄ネジ金具をノズル管の絞り成形加工により取り付けた状態における一部破断した側面図である。
【図７】本発明手段による噴霧竿の形態の薬液の散布装置の、噴頭部の回転によりノズルの噴射方向を下向きとした状態の側面図である。
【符号の説明】
Ａ…散布装置、Ｈ…送液ホース、ａ…操作部、ｂ…ノズル管、ｃ…噴頭部、ｗ…雄ネジ金具、１…ボディ、１０…接続口、１１…把持部、１２…操作レバー、１３…支軸、１４…雄ネジ、２ａ…接続口、２０…袋ナット、２１…雄ネジ、２３…ナット、３０…雌ネジ、３１…ノズル取付口、３２…ノズル、４０…軸筒部、４１…拡径筒部、４２…環状溝、５…Ｏリング。[0001]
[Technical field to which the invention belongs]
The present invention has a grip port for freely operating the machine body on the hand side of the machine body formed in a bowl shape, and a connection port for connecting with a connection hose to a discharge pipe of a sprayer that compresses a pump manually or by power And an operation lever for controlling the flow of the chemical liquid guided by the connecting hose, and a chemical liquid in the form of providing a jet head for spraying the chemical liquid delivered through the conduit passage of the inner cavity of the bowl-shaped body at the distal end side It is related with the improvement about the spraying device.
[0002]
[Prior art]
As shown in FIG. 1, the chemical solution spraying apparatus A having the above-described configuration is usually connected to the operation unit a on the hand side, the intermediate nozzle tube b, and the jet head c on the tip side. They are connected together to form a so-called spray bottle.
[0003]
The operation part a, the nozzle tube b, and the jet head c constituting the spraying device A are provided with a conduit in the operation part a, and are manually or powered on the outer end side of the conduit. Is provided with a connection port 10 for connecting via a liquid supply hose H to a discharge port of a sprayer that compresses the pump to discharge a chemical solution, and a grip portion 11 that can be gripped by the palm of a hand on the outer surface side An operation lever 12 for operating a valve mechanism incorporated in the internal conduit is provided to operate the gripping part 11 by gripping it with a hand, and operate the operation lever 12 with a finger of the hand gripping the gripping part 11. And the valve mechanism is controlled.
[0004]
Further, in the intermediate nozzle tube b, as shown in FIG. 2, the distal end of the conduit path provided by exposing the connection port 2a provided on the proximal end side thereof to the distal end side of the operation portion a. The cap nut 20 that is joined to the connection port 10 on the side and fitted on the proximal end side of the nozzle tube b is fastened to a male screw provided on the outer periphery of the connection port 10 to connect to the operation portion a. The male screw 21 with a sleeve that is screwed into the female screw 30 provided at the base end of the jet head c is inserted into the tip side, and the connection port at the tip of the nozzle tube b is connected to the jet head c. The male screw 21 with the sleeve is screwed into the female screw 30 of the jet head c and fastened from the jointed position to the joint port on the base end side of the jet head c so as to be connected and connected to the jet head c. It is.
[0005]
Further, in the jet head c, a branch-shaped nozzle attachment port 31 is provided in the body thereof, and the nozzle 32 is screwed and attached thereto.
[0006]
And by this, in a state where the connection port at the outer end of the operation unit a is connected to the liquid supply hose H connected to the discharge port of the sprayer, the holding unit 11 of the operation unit a is held by hand, While the hose H is being handed out, the tip jet head c is positioned at a predetermined location, and by operating the operation lever 12, the chemical liquid ejected from the nozzle 32 provided at the tip jet head c is directed in the direction toward the nozzle 32. I try to spray it.
[0007]
In this spraying operation, for example, as shown in FIG. 1, the spraying direction of the chemical solution from the nozzle 32 of the tip jet head c is in a state where the operation lever 12 for grasping the operation unit a is located on the lower surface side. When changing from the state where the ejection direction of the chemical solution from the nozzle 32 attached to the nozzle head c attached to the tip is the direction toward the upper side to the direction toward the side or the lower side, Loosen the proximal cap nut 20 and rotate the nozzle tube b with respect to the operating portion a, thereby rotating the jet head c connected and connected to the tip of the nozzle tube b together. This is performed by setting the attached nozzle 32 in a state of moving in the lateral direction or downward.
[0008]
[Problems to be solved by the invention]
The chemical solution spraying apparatus A of the above-described form grips the grasping portion 11 of the operation portion a on the hand side by hand and ejects the chemical solution ejected from the nozzle 32 of the jet head c at the tip of the nozzle tube b to the pest of the plant. There is a problem that it is troublesome to change and adjust the discharge direction of the chemical solution from the nozzle 32 when performing a spraying operation in which spraying is performed on a place to be disinfected.
[0009]
In order to change the discharge direction of the chemical solution from the nozzle 32, the spraying operation of the chemical solution is temporarily stopped, and the valve mechanism is switched to the closed position by the operation of the operation lever 12, so that the chemical solution is sent out by the operation unit. In this state, the cap nut 20 on the proximal end side of the nozzle tube b is loosened, and the nozzle tube b is rotated by a desired angle with respect to the operation portion a, thereby discharging the chemical liquid from the nozzle 32. After changing the direction, the cap nut 20 is tightened to connect the nozzle tube b to the conduit of the operating portion a, and from this state, the valve mechanism is opened by operating the operating lever 12, thereby spreading the work. A troublesome process of resuming the operation, and the spraying operation must be stopped once, resulting in a reduction in work efficiency, and the nozzle 3 of the jet head c. Since the change of the discharge direction of the chemical liquid from the nozzle 32 is performed by closing the conduit by closing the valve mechanism, only the direction in which the nozzle 32 protrudes from the jet head c is changed, and the valve mechanism is opened. When the chemical liquid is actually discharged, the injection direction of the chemical liquid from the nozzle 32 may be different from the desired direction, and the same process must be repeated once again for fine adjustment. is there.
[0010]
The present invention was made in order to solve the above-described problem occurring in a conventional chemical solution spraying device. The chemical solution is obtained from a nozzle of a jet head provided on the distal end side of a nozzle tube by grasping an operation unit. Changing the direction of spraying the chemical from the nozzle when spraying is performed with a simple operation without interrupting the operation and without having to loosen and tighten the cap nut. Another object of the present invention is to provide a new means that enables fine adjustment of the ejection direction of the nozzle of the jet head to be performed in a state where the chemical liquid is ejected.
[0011]
[Means for Solving the Problems]
In the present invention, when connecting and connecting the gripping portion, the nozzle tube, and the jet head to form a spray bottle-shaped chemical liquid spraying device, the connection / connection between the gripping portion and the proximal end of the nozzle tube is performed by conventional means. In this way, the cap nut may be used, but the connection between the nozzle tube and the jet head that is performed by screwing the male screw fitting provided at the tip of the nozzle tube with the female screw provided on the proximal end side of the jet head. In a state where the nozzle tube and the jet head are connected, the jet head can rotate with respect to the nozzle tube at the center of the axis of the nozzle tube by a desired angular amount, and at the rotated state position. To be held.
[0012]
For this, a male screw fittings provided on the tip side of the nozzle tube is provided by continuous cylindrical portion in which the outer diameter and the small diameter Ri by the inner diameter of the nozzle tube to that of the base end side, out of the barrel portion A diameter-expanded cylindrical portion whose outer diameter is expanded so as to correspond to the inner diameter of the nozzle tube is continuously provided on the end side, and an O-ring fitting groove is formed on the outer peripheral surface of the diameter-expanded cylindrical portion. Insert the O-ring.
[0013]
In addition, the nozzle tube provided with the male screw fitting on the distal end side is formed into a tube having a predetermined inner diameter with a metal material that can be drawn.
[0014]
Then, in the lumen of the opening end portion on the distal end side of the nozzle tube, the enlarged diameter cylindrical portion and the shaft cylindrical portion formed on the proximal end side of the male screw fitting are fitted, and the outer periphery of the enlarged diameter cylindrical portion is inserted. The outer peripheral surface of the fitted O-ring is brought into pressure contact with the inner peripheral surface of the nozzle tube, thereby connecting the lumen of the nozzle tube and the lumen of the male screw fitting in a state of maintaining watertightness with respect to the outside.
[0015]
Next, in this state, the tip of the nozzle tube is subjected to a drawing process for narrowing it toward the outer peripheral surface of the shaft tube portion of the male screw fitting, and in this process, the tip of the nozzle tube is made of the male screw fitting. The enlarged diameter cylindrical portion is held, and the male screw fitting is connected to the nozzle tube in a state in which the rotation around the axial center of the nozzle tube is allowed. Be regulated by the frictional resistance of the contact surface.
[0016]
As a result, the jet head rotates against the frictional resistance of the contact surface of the O-ring by applying a load in the circumferential direction centered on the axis of the nozzle tube to the head, and again by releasing the load. The rotating position of the nozzle head with respect to the nozzle tube is changed by the frictional resistance so that the injection direction of the chemical solution of the nozzle attached to the nozzle head is changed.
[0017]
According to this means, it is possible to change the spray direction of the chemical solution from the nozzle attached to the jet head to a desired direction with reference to the gripping part gripped in a predetermined posture without interrupting the spraying operation. It becomes possible to do it by simple operation that only rotates.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings with respect to the illustrated embodiments. The reference numerals used in the description of the embodiments are the same reference numerals for members having the same configurations as those of the conventional means.
[0019]
FIG. 3 is a side view of the whole of the chemical solution spraying apparatus A for carrying out the means of the present invention. In FIG. 3, a is an operation section, b is a nozzle tube, and c is a jet head.
[0020]
The gripping portion a may be configured in the same manner as the operation portion a in the chemical spraying device A in the form of a conventional spray bottle shown in FIGS. 1 and 2, and has a tubular shape with a conduit path inside. A connecting port 10 is formed on the outer end side of the body 1 for connecting the internal conduit to a discharge port of a chemical solution of a separate sprayer via a liquid supply hose H. A grip portion 11 is formed on the outer periphery of the body 1, and a valve mechanism for controlling the flow of the chemical introduced from the connection port 10 is incorporated in the body 1, and the valve mechanism is closed and opened. The operation lever 12 for operating the actuator is arranged on the lower surface side of the body 1 and pivotally supported by the support shaft 13, and the inner end side of the body 1 is connected to the base end of the nozzle tube b. It is of a normal form that is configured by providing a mouth and a male screw 14 for connecting the nozzle tube b. .
[0021]
The nozzle tube b is formed of a metal material to form a bowl-shaped pipe, and the opening end on the base end side thereof is joined to the joint port provided on the inner end side of the operation portion a, so that the outer periphery on the base end side is formed. A nut 23 which is fitted in advance and connected to the operation portion a by screwing and fastening the nut 23 to the male screw 14 at the inner end of the operation portion a, and is spliced. In order to attach and hold the male screw fitting w for connection of the portion c by the drawing process of the nozzle tube b, the material and the thickness are selected and set so as to enable the drawing process.
[0022]
The male screw fitting w to be mounted on the tip of the nozzle tube b for mounting the jet head c has an outer diameter on the base end side that is larger than the inner diameter of the nozzle tube b, as shown in FIGS. A shaft cylinder portion 40 having a slightly smaller diameter is provided continuously, and an enlarged diameter cylinder portion 41 having an outer diameter corresponding to the inner diameter of the nozzle tube b is further continuously formed on the outer end side of the shaft cylinder portion 40. The outer peripheral surface of the portion 41 is formed into a structure having an annular groove 42 into which the O-ring 5 is fitted.
[0023]
In addition, the male screw fitting w and the nozzle tube b are connected by connecting the shaft tube portion 40 of the male screw fitting w and the diameter-enlarging tube portion 41 continuous to the annular groove on the outer periphery of the diameter-enlarging tube portion 41. The state where the O-ring 5 is fitted in 42 is inserted into the inner cavity of the nozzle tube b through the opening on the tip side, and is positioned on the outer peripheral side of the shaft tube portion 40 on the tip side of the nozzle tube b from that state. The tube wall of the nozzle tube b of the part is subjected to a drawing process that narrows down toward the outer peripheral surface of the shaft tube portion 40 that has been swollen with respect to the enlarged diameter tube portion 41, and by this processing, the tube wall of the nozzle tube b The enlarged diameter cylindrical portion 41 is held in the neck portion formed by the peripheral surface of the small diameter axial tube portion 40, and the male screw fitting w is connected and held at the tip end portion of the nozzle tube b so as to allow rotation. As a result, the male screw fitting w is kept in a watertight state with the outside by the O-ring 5. The rotation with respect to the nozzle tube b is regulated by the frictional force of the contact surface of the O-ring 5 that is connected to and communicated with the inner cavity of the nozzle tube b and maintains the watertightness, and is held at a predetermined rotational position. The rotation is enabled by applying a load.
[0024]
The jet head c has a male screw fitting w provided on the distal end side of the nozzle tube b and the connection port connected to the connection port at the distal end of the nozzle tube b on the proximal end side of the body formed hollow and equipped with a conduit. And a female screw 30 for connecting the jet head c to the nozzle tube b, and nozzle mounting ports 31 and 31 communicating with the internal liquid guide passage are provided in a branch tube on the outer peripheral surface. The nozzles 32 are respectively screwed and attached to the nozzle tube b so that the female screw 30 is fastened to the male screw fitting w of the nozzle tube b to connect the nozzle tube b. The reference position of the operation portion a is set so that the injection direction of the chemical solution from the nozzle 32 is upwardly opposite to the operation lever 12 provided in the grip portion a, for example, as shown in FIG. The normal one that will be set in the predetermined direction There are those that may be constructed similarly to the conventional.
[0025]
The chemical solution spraying apparatus A assembled by the above is a spraying operation by operating the valve mechanism by grasping the operation lever 12 together with one hand holding the operation portion a and spraying the chemical solution from the nozzle 32 of the jet head c. If the jet head c is rotated by a desired angle amount with the other hand during the operation, the injection direction of the chemical liquid from the nozzle 32 becomes downward as shown in FIG. The direction is changed to a desired direction based on the posture of the part a.
[0026]
【The invention's effect】
As described above, in the means of the present invention, the jet head c attached to the tip end side of the nozzle tube b is rotatably connected to the nozzle tube b while being kept watertight by the O-ring 5; In addition, the nozzle c is rotated with respect to the nozzle tube b during the spraying operation of the chemical liquid because it is held at a desired rotational position by friction of the contact surface of the O-ring 5 that holds the water tightness. Thus, the change and adjustment of the injection direction of the chemical solution from the nozzle 32 attached to the jet head c can be performed.
[Brief description of the drawings]
FIG. 1 is a side view of a conventional chemical spraying device in the form of a spray bottle.
FIG. 2 is a side view of the above nozzle tube.
FIG. 3 is a side view of an apparatus for spraying a chemical solution in the form of a spray bottle according to the means of the present invention.
FIG. 4 is a side view of the above nozzle tube.
FIG. 5 is a partially cutaway side view of the tip portion of the nozzle tube before the male screw fitting is attached.
FIG. 6 is a partially cutaway side view of the tip portion of the nozzle tube in a state where a male screw fitting is attached by drawing forming the nozzle tube.
FIG. 7 is a side view of a spraying device for a chemical liquid in the form of a spray mist according to the means of the present invention in a state in which the injection direction of the nozzle is directed downward by the rotation of the jet head.
[Explanation of symbols]
A ... spraying device, H ... liquid feeding hose, a ... operating part, b ... nozzle tube, c ... jet head, w ... male screw fitting, 1 ... body, 10 ... connecting port, 11 ... gripping part, 12 ... operating lever , 13 ... support shaft, 14 ... male screw, 2a ... connection port, 20 ... cap nut, 21 ... male screw, 23 ... nut, 30 ... female screw, 31 ... nozzle mounting port, 32 ... nozzle, 40 ... shaft tube portion , 41... Expanded cylindrical portion, 42... Annular groove, 5.

Claims

An operating portion ( a ) provided with a gripping portion ( 11 ) on the outer peripheral side and an operating lever ( 12 ) for operating a valve mechanism provided therein, and a hook-like shape connecting and connecting the base end side to the operating portion (a) The nozzle tube (b), the male screw fitting (w) for connecting the nozzle connected to the tip side of the nozzle tube (b), and the male pipe fitting (w) for connection to the nozzle tube (b). In a spray bottle-shaped chemical liquid spraying device comprising a jet head (c) provided with a nozzle (32) on the outer peripheral side, the nozzle tube (b) is formed into a tubular shape with a metal material that enables drawing, The male screw fitting (w) provided on the distal end side of the nozzle tube ( b ) is provided with a shaft tube portion ( 40 ) whose outer diameter is smaller than the inner diameter of the nozzle tube ( b ) on the proximal end side, as the outer diameter on the outer end side of the cylindrical portion (40) corresponds to the inner diameter of the nozzle tube (b) The flare tube portion (41) are continuous diameter and the O-ring (5) and Katachi設an annular groove (42) on the outer peripheral surface of the enlarged diameter cylindrical portion (41) and its annular groove (42) It is formed in a fitted shape, and the shaft tube portion (40) and the diameter-expanded tube portion (41) of the male threaded fitting (w) are placed in the O-ring (in the tube on the tip side of the nozzle tube ( b )). 5) fitted rotatably in allowed held watertight, a tube wall of the nozzle tube (b), the portion corresponding to the barrel portion formed on the small diameter of the male screw fittings (w) (40), facilities and by crimping of the drawing was, rotatably mounted a male screw fittings (w) on the distal end side of the nozzle tube (b), the male threaded fitting (w) spraying device for liquid medicine comprising attaching噴頭part (c) to.