JPH1024975A - Outlet valve for trigger type liquid ejector - Google Patents
Outlet valve for trigger type liquid ejectorInfo
- Publication number
- JPH1024975A JPH1024975A JP8201303A JP20130396A JPH1024975A JP H1024975 A JPH1024975 A JP H1024975A JP 8201303 A JP8201303 A JP 8201303A JP 20130396 A JP20130396 A JP 20130396A JP H1024975 A JPH1024975 A JP H1024975A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- nozzle
- valve body
- hole
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 82
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、トリガー式液体噴
出器の吐出弁に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge valve of a trigger type liquid ejector.
【０００２】[0002]
【従来の技術】液体を収容した液体容器の口頸部に装着
して使用する一般的なトリガー式液体噴出器は、液体噴
出器本体にトリガーで機械的に作動させるプランジャ型
ポンプを備え、トリガーを引いてプランジャを押し込み
することで、ポンプ内の液体を加圧して液体噴出器本体
先端のノズルから噴出させ、かつ、トリガーを放して該
トリガー及びプランジャをポンプに内蔵したスプリング
により復帰させることで、容器内の液体をポンプ内へと
吸い上げるようになっている。ところで、この種のトリ
ガー式液体噴出器に、実開平４−１７８５５８号公報の
ものがある。この場合のプランジャ型ポンプは、液体噴
出器本体におけるノズルに近い先端部分に吐出弁を内装
しており、該吐出弁は、弁体をスプリングで弁座へと所
定の弾力で押圧着座させている。つまり、この吐出弁で
は、プランジャの押し込みで加圧された液体の圧力がス
プリングの閉弁力に勝ったときに、この加圧液体が弁体
を押し開くものであり、したがって、所定圧以上でのみ
液体を噴出させることができて、液垂れを少なくするこ
とができる。2. Description of the Related Art A general trigger type liquid ejector used by being attached to the mouth and neck of a liquid container containing a liquid is provided with a plunger type pump mechanically operated by a trigger on a liquid ejector main body. By pressing the plunger and pushing the plunger, the liquid in the pump is pressurized and ejected from the nozzle at the tip of the liquid ejector body, and the trigger is released and the trigger and the plunger are returned by the spring built in the pump. Then, the liquid in the container is sucked up into the pump. By the way, this type of trigger type liquid ejector is disclosed in Japanese Utility Model Laid-Open No. 4-178558. The plunger type pump in this case has a discharge valve provided at a tip portion near the nozzle in the liquid ejector main body, and the discharge valve presses and seats the valve body on the valve seat with a predetermined elasticity by a spring. . That is, in this discharge valve, when the pressure of the liquid pressurized by pushing the plunger exceeds the valve closing force of the spring, the pressurized liquid pushes the valve body open. Only the liquid can be ejected, and the dripping can be reduced.
【０００３】[0003]
【発明が解決しようとする課題】しかし、この場合に
も、吐出弁を通過した加圧液体が、更にノズル内の流路
を経てノズル孔から噴出するので、未だ次のような問題
点が残されている。 トリガーの引き始めすなわちプランジャの押し込み
当初において、先頭の加圧液体がそのノズル内流路を流
下する間、時間的遅れ又は圧力ロスを伴い、効率が低下
する。また、ノズル内流路及びノズル孔内に前回に供給
された液体が残留している場合には、先頭の加圧液体が
ノズル孔に達するまでの間、残留液体が所定液圧以下で
押し出されて良好な噴出が得られず、ノズル孔からその
残留液体による液垂れを生じることがある。 トリガーの引き終わりすなわちプランジャの押し込
み終端において、吐出弁の閉弁に伴い、閉じる弁体で未
だノズル内流路及びノズル孔内にある液体が押圧され
て、このノズル内流路及びノズル孔内の液体はその液圧
が急速には低下せず、したがって、噴出が止む際の液切
れが悪くなり、ノズル孔から液垂れを生じることがあ
る。本発明は、これらの問題点を解決しようとするもの
である。However, also in this case, the pressurized liquid that has passed through the discharge valve is further ejected from the nozzle hole through the flow path in the nozzle, so that the following problem still remains. Have been. At the beginning of pulling of the trigger, that is, at the beginning of pushing the plunger, while the leading pressurized liquid flows down the flow path in the nozzle, efficiency is reduced due to a time delay or pressure loss. If the liquid previously supplied remains in the nozzle flow path and the nozzle hole, the remaining liquid is extruded at a predetermined liquid pressure or less until the first pressurized liquid reaches the nozzle hole. And a good jet may not be obtained, and dripping may occur due to the residual liquid from the nozzle hole. At the end of pulling of the trigger, that is, at the end of pushing of the plunger, with the closing of the discharge valve, the liquid still in the nozzle flow path and the nozzle hole is pressed by the closing valve body, and the nozzle flow path and the nozzle hole are closed. The liquid pressure does not decrease rapidly, so that the liquid is not easily drained when the jetting stops, which may cause dripping from the nozzle hole. The present invention seeks to solve these problems.
【０００４】[0004]
【課題を解決するための手段】かかる観点から、請求項
１の発明は、液体噴出器本体１の吐出側端部２から突出
させたノズル連結筒３に、中央にノズル孔４を有するキ
ャップ状のノズル５を連結し、該ノズル５乃至ノズル連
結筒３の内側に上記液体噴出器本体１の吐出流路６と連
通する弁室７を形成し、該弁室７内には、そのノズル５
における上記ノズル孔４の直近の背後に該ノズル孔４と
連通する弁孔８及び後方に面する弁座９を設けるととも
に、該弁座９に先端にて対峙させて先端開放、基端閉塞
でかつ内周が弁座９よりも大きな小シリンダ10を配備さ
せ、該小シリンダ10にスカート11を外周設したハット状
の弁体12を摺動自在に嵌合させ、該弁体12乃至小シリン
ダ10内に該弁体12を付勢するスプリング13を内装して該
弁体12を上記弁座９へと押圧着座させ、該弁体12の中央
に透孔14を穿設したことを特徴とする。In view of the above, according to the first aspect of the present invention, there is provided a liquid ejector main body 1 in which a nozzle connecting cylinder 3 protruding from a discharge side end portion 2 has a cap-like shape having a nozzle hole 4 in the center. And a valve chamber 7 communicating with the discharge flow path 6 of the liquid ejector main body 1 is formed inside the nozzle 5 through the nozzle connecting cylinder 3. The nozzle 5 is provided in the valve chamber 7.
A valve hole 8 communicating with the nozzle hole 4 and a valve seat 9 facing the rear are provided immediately behind the nozzle hole 4 in the above. A small cylinder 10 having an inner periphery larger than the valve seat 9 is provided, and a hat-shaped valve body 12 having a skirt 11 provided on the outer periphery thereof is slidably fitted to the small cylinder 10. A spring 13 for biasing the valve body 12 is provided inside the valve body 10, the valve body 12 is pressed and seated on the valve seat 9, and a through hole 14 is formed in the center of the valve body 12. I do.
【０００５】請求項２の発明は、請求項１のトリガー式
液体噴出器の吐出弁にあって、上記小シリンダ10乃至弁
体12内にて、その小シリンダ10の閉塞基端から先端を尖
らせたスプリング支持棒15を突設し、該スプリング支持
棒に上記スプリング13の基端部を嵌合支持させて成る。According to a second aspect of the present invention, there is provided the discharge valve of the trigger type liquid ejector according to the first aspect, wherein the tip of the small cylinder 10 to the valve body 12 is pointed from the closed base end of the small cylinder 10. The spring support rod 15 is provided so as to protrude, and the base end of the spring 13 is fitted and supported on the spring support rod.
【０００６】請求項３の発明は、請求項１又は請求項２
のトリガー式液体噴出器の吐出弁にあって、上記弁座９
の周辺から短い弁体案内筒30を突設し、該弁体案内筒に
は、適所に液体流通可能に切欠31を形成して弁体12を出
入可動に嵌挿させて成る。[0006] The invention of claim 3 is claim 1 or claim 2.
The above-mentioned valve seat 9
A short valve body guide cylinder 30 is protruded from the periphery of the valve body, and a cutout 31 is formed in the valve body guide cylinder so that liquid can flow therethrough, and the valve body 12 is inserted and moved movably.
【０００７】[0007]
その1.図１、図２は、請求項１及び請求項２の発明に係
る閉弁状態と開弁状態におけるトリガー式液体噴出器の
吐出弁の実施形態を示している。図において、１は、ト
リガー式液体噴出器における液体噴出器本体、２は、該
液体噴出器本体の吐出側端部で、該吐出側端部は、前方
へ向かう嵌合横筒から成る。３は、上記吐出側端部２か
ら突出させたノズル連結筒で、該ノズル連結筒は、基端
に上記吐出側端部２を覆う垂直片16を有し、該垂直片か
ら後方へ嵌着横筒17を突設して、該嵌着横筒を上記吐出
側端部２たる嵌合横筒の外周に不動にかつ水密に嵌合さ
せ、垂直片16には、ノズル連結筒３が囲成する内側の上
部に透孔34を穿設して、該透孔によりノズル連結筒３内
を液体噴出器本体１したがって吐出側端部２内の吐出流
路６と開通させている。また、ノズル連結筒３の外周に
は、係合突条18を周設している。５は、中央にノズル孔
４を有するキャップ状のノズルで、嵌合周壁19を上記ノ
ズル連結筒３の外周に嵌合させ、該嵌合周壁19の内周に
係合凹溝20を周設して、該係合凹溝をそのノズル連結筒
３の上記係合突条18に係合させている。また、嵌合周壁
19の内側に短小の嵌合内筒21を有して、該嵌合内筒を上
記ノズル連結筒３の内周に水密に嵌合させている。そし
て、ノズル孔４は、ノズル５の中央部外面に環状深溝22
を周設して、該環状深溝に小キャップ状のノズルピース
23を嵌着し、該ノズルピースの中心に噴霧用のスピン溝
付きノズル孔24を設けることで形成しており、該スピン
溝付きノズル孔からノズル５内へと上記環状深溝22に沿
えて液体案内溝25を開通させている。なお、図示のノズ
ル孔４では、噴霧用のスピン溝付きノズル孔24である
が、ストレート噴射用や発泡用等のものであってもよ
い。1. 1. FIGS. 1 and 2 show an embodiment of a discharge valve of a trigger type liquid ejector in a valve closed state and a valve open state according to the first and second aspects of the present invention. In the drawing, 1 is a liquid ejector main body in a trigger type liquid ejector, 2 is a discharge side end of the liquid ejector main body, and the discharge side end is formed of a fitting horizontal cylinder which goes forward. Reference numeral 3 denotes a nozzle connecting tube protruding from the discharge-side end portion 2. The nozzle connecting tube has a vertical piece 16 covering the discharge-side end portion 2 at a base end, and is fitted rearward from the vertical piece. A horizontal cylinder 17 is protruded, and the fitted horizontal cylinder is fixedly and watertightly fitted to the outer periphery of the fitting horizontal cylinder serving as the discharge end 2, and the vertical piece 16 is surrounded by the nozzle connecting cylinder 3. A through-hole 34 is formed in the upper portion on the inner side of the nozzle, and the through-hole allows the inside of the nozzle connecting tube 3 to communicate with the liquid ejector main body 1 and thus with the discharge channel 6 in the discharge-side end portion 2. An engagement ridge 18 is provided around the outer periphery of the nozzle connecting cylinder 3. Reference numeral 5 denotes a cap-shaped nozzle having a nozzle hole 4 at the center. The fitting peripheral wall 19 is fitted to the outer periphery of the nozzle connecting tube 3, and an engaging concave groove 20 is provided on the inner periphery of the fitting peripheral wall 19. Then, the engagement groove is engaged with the engagement protrusion 18 of the nozzle connecting cylinder 3. Also, the fitting peripheral wall
A short fitting inner cylinder 21 is provided inside 19, and the fitting inner cylinder is fitted to the inner periphery of the nozzle connecting cylinder 3 in a watertight manner. The nozzle hole 4 is provided with an annular deep groove 22 on the outer surface at the center of the nozzle 5.
And a small cap-shaped nozzle piece is provided in the annular deep groove.
23 is formed by providing a nozzle hole 24 with a spin groove for spraying at the center of the nozzle piece, and the liquid flows from the nozzle hole with the spin groove into the nozzle 5 along the annular deep groove 22. The guide groove 25 is opened. Although the illustrated nozzle hole 4 is a nozzle hole 24 with a spin groove for spraying, it may be one for straight injection, foaming, or the like.
【０００８】７は、ノズル５乃至ノズル連結筒３の内側
に形成した弁室で、該弁室は、液体噴出器本体１の吐出
流路６と連通させている。該弁室７内では、そのノズル
５における上記ノズル孔４の直近の背後に、該ノズル孔
４したがって上記液体案内溝25と連通する弁孔８及び後
方に面するテーパ状の弁座９を設けるとともに、先端開
放、基端閉塞で、内周が弁座９よりも大径の小シリンダ
10を上記垂直片16から前方へと突設することで、該小シ
リンダ10を先端にて上記弁座９に対峙させて配備させて
おり、更に、小シリンダ10内には、スカート11を外周設
したハット状の弁体12を摺動自在に嵌合させ、該弁体12
乃至小シリンダ10内に該弁体12を付勢するコイルスプリ
ング13を内装して該弁体12を上記弁座９へと押圧着座さ
せ、該弁体12の中央に透孔14を穿設している。15は、上
記小シリンダ10乃至弁体12内にて、上記垂直片16から前
方へと突設したスプリング支持棒で、該スプリング支持
棒は、棒体26の周りに複数の案内片27を等間隔に付設
し、棒体26乃至案内片27の先部を円錐状に尖らせてい
る。28は、ノズル５の前面に配してノズルの上部に開閉
可能に枢着29したノズル孔用の蓋板であり、液体の噴射
の際は上方へと開蓋させるものである。Reference numeral 7 denotes a valve chamber formed inside the nozzle 5 to the nozzle connecting cylinder 3. The valve chamber communicates with the discharge flow path 6 of the liquid ejector main body 1. In the valve chamber 7, a valve hole 8 communicating with the nozzle hole 4 and thus the liquid guide groove 25 and a tapered valve seat 9 facing rearward are provided immediately behind the nozzle hole 4 in the nozzle 5. Also, a small cylinder whose inner circumference is larger than the valve seat 9 with the distal end open and the proximal end closed.
By projecting the vertical piece 16 forward from the vertical piece 16, the small cylinder 10 is disposed so as to face the valve seat 9 at the tip, and a skirt 11 is further provided inside the small cylinder 10. The provided hat-shaped valve element 12 is slidably fitted to the
A coil spring 13 for urging the valve body 12 is provided inside the small cylinder 10 to press and seat the valve body 12 against the valve seat 9, and a through hole 14 is formed in the center of the valve body 12. ing. Reference numeral 15 denotes a spring support rod protruding forward from the vertical piece 16 in the small cylinder 10 to the valve body 12. The spring support rod includes a plurality of guide pieces 27 around a rod body 26. The tip of the rod 26 or the guide piece 27 is sharpened in a conical shape. Reference numeral 28 denotes a cover plate for a nozzle hole which is disposed on the front surface of the nozzle 5 and is pivotably connected to the upper portion of the nozzle 29 so as to be openable and closable.
【０００９】如上の構成であるから、図１の閉弁状態に
おいて、トリガーを引き、プランジャを押し込みするこ
とにより、液体噴出器本体１から吐出流路６を通じて加
圧液体が供給されると、この加圧液体は、垂直片16の透
孔34を通ってノズル連結筒３内にそして弁室７に流入
し、小シリンダ10の外側を経て、弁体12の周りに入り込
む。弁体12の周りに入り込んだ加圧液体は、弁体外周の
スカート11に液圧を及ぼし、その液圧が弁体12を押圧し
ているコイルスプリング13の弾力に勝ると、該コイルス
プリングに抗して弁体12を後退させ、図２に示すよう
に、弁体12が弁座９から離間して開弁状態となる。この
開弁に伴い、所定値以上の液圧の加圧液体のみがノズル
孔４から噴出する。つまり、図示の場合、その加圧液体
は、液体案内溝25を経てスピン溝付きノズル孔24から噴
出して、液垂れのない良好な噴霧を生じさせる。そし
て、吐出弁がノズル孔４の直近の背後に配されることと
なり、この吐出弁からノズル孔４に至るノズル内流路は
極短小でかつ細いものとなるから、トリガーの引き始め
すなわちプランジャの押し込み当初において、最初の加
圧液体がそのノズル内流路を流下する間の時間的遅れや
圧力ロスはほとんどないに等しく、効率が悪化すること
はない。When the pressurized liquid is supplied from the liquid ejector main body 1 through the discharge flow path 6 by pulling the trigger and pushing the plunger in the valve closed state shown in FIG. The pressurized liquid flows into the nozzle connecting cylinder 3 through the through hole 34 of the vertical piece 16 and into the valve chamber 7, and passes around the valve body 12 via the outside of the small cylinder 10. The pressurized liquid that has entered around the valve element 12 exerts a liquid pressure on the skirt 11 on the outer periphery of the valve element, and when the liquid pressure exceeds the elasticity of the coil spring 13 pressing the valve element 12, the coil spring The valve body 12 is retracted in opposition, and as shown in FIG. 2, the valve body 12 is separated from the valve seat 9 to be in an open state. With this opening, only the pressurized liquid having a hydraulic pressure equal to or higher than a predetermined value is ejected from the nozzle hole 4. That is, in the case shown in the drawing, the pressurized liquid is ejected from the nozzle hole 24 with the spin groove via the liquid guide groove 25 to generate a good spray without dripping. The discharge valve is disposed immediately behind the nozzle hole 4, and the flow path in the nozzle from the discharge valve to the nozzle hole 4 is extremely short and narrow, so that the trigger starts to be pulled, that is, the plunger is moved. At the beginning of the pushing, there is almost no time delay or pressure loss while the first pressurized liquid flows down the flow path in the nozzle, and the efficiency does not deteriorate.
【００１０】また、弁体12では、透孔14が次のように作
用する。 仮に、透孔14がない場合を考えると、小シリンダ10
乃至弁体12内に弁室７内の液体が侵入すれば弁体12は動
作しなくなり、トリガーを引いて加圧液体を供給しても
液体の噴出が得られないこととなるが、弁体12の中央に
透孔14があることによって、小シリンダ10乃至弁体12内
に弁室７内の液体が侵入しても、透孔14がその侵入液体
を弁体12の開弁に伴い弁室７内の液圧と同圧でノズル孔
４へ向けて流出させるので、弁体12の開弁動作に支障を
生じさせない。 トリガーの引き終わりすなわちプランジャの押し込
み終端において、供給される加圧液体の液圧が所定値以
下になると、弁体12がコイルスプリング13の弾力で閉弁
し（なお、弁体12の進出の初期には、該弁体12による押
圧でノズル孔４側の液体の一部は未だ高い液圧でノズル
孔４から押し出される。）、その弁体12の進出で小シリ
ンダ10乃至弁体12内が負圧化傾向となるが、これに伴
い、透孔14は、小シリンダ10乃至弁体12内にノズル孔４
側の弁室７内の液体を引き込ませて、ノズル孔４内の液
体を瞬時にして降圧させる。したがって、噴出が止む際
の液切れをよくし、ノズル孔からの液垂れを生じさせな
い。また、小シリンダ10乃至弁体12内への液体の引き込
みにより、弁体12の閉弁動作に支障を生じさせない。 弁室７にエアを供給して行う弁座９と弁体12との間
の漏れ試験において、透孔14は、小シリンダ10とスカー
ト11との間の漏れ試験をも同時に行うことを可能にす
る。In the valve body 12, the through hole 14 operates as follows. Assuming that there is no through hole 14, the small cylinder 10
If the liquid in the valve chamber 7 penetrates into the valve body 12, the valve body 12 does not operate, and even if the trigger is pulled and the pressurized liquid is supplied, the ejection of the liquid cannot be obtained. Since the through hole 14 is provided at the center of the valve 12, even if the liquid in the valve chamber 7 intrudes into the small cylinder 10 to the valve body 12, the through hole 14 allows the intruding liquid to flow through the opening of the valve body 12. Since the fluid flows out toward the nozzle hole 4 at the same pressure as the fluid pressure in the chamber 7, the valve opening operation of the valve body 12 does not interfere. When the pressure of the supplied pressurized liquid becomes equal to or lower than a predetermined value at the end of pulling of the trigger, that is, at the end of pushing of the plunger, the valve body 12 closes due to the elasticity of the coil spring 13 (note that the initial stage of the advancement of the valve body 12). In the meantime, a part of the liquid on the nozzle hole 4 side is pushed out from the nozzle hole 4 by the pressure by the valve body 12 with still high hydraulic pressure.) A negative pressure tends to occur, and accordingly, the through hole 14 is formed in the small cylinder 10 or
The liquid in the nozzle hole 4 is instantaneously reduced in pressure by drawing the liquid in the valve chamber 7 on the side. Therefore, the liquid is easily drained when the ejection stops, and the liquid does not drip from the nozzle hole. Further, the liquid is not drawn into the small cylinder 10 or the valve body 12 and does not hinder the valve closing operation of the valve body 12. In the leak test between the valve seat 9 and the valve body 12 performed by supplying air to the valve chamber 7, the through hole 14 enables the leak test between the small cylinder 10 and the skirt 11 to be performed at the same time. I do.
【００１１】その2.図３は、請求項３の発明に係る閉弁
状態におけるトリガー式液体噴出器の吐出弁の実施形態
を示している。図１及び図２のトリガー式液体噴出器の
吐出弁にあって、上記弁座９の周辺から短い弁体案内筒
30を突設し、該弁体案内筒には、適所に液体流通可能に
切欠31を形成して弁体12を出入可動に嵌挿させ、また、
弁体案内筒30の内縁と弁体12の前端部外周とに相互に衝
合する抜け止め用のストッパー32，33を設けている。こ
の場合、弁体案内筒30とストッパー32，33は、弁体12を
的確に開閉動作させるとともに、組み立ての際に予め嵌
挿させた弁体12を保持して組み立てを容易にする。その
他の構成及び動作は、図１及び図２の場合と同じにつ
き、図１及び図２の説明をもって説明を省略する。2. FIG. 3 shows an embodiment of the discharge valve of the trigger type liquid ejector in the valve closed state according to the third aspect of the present invention. In the discharge valve of the trigger type liquid ejector shown in FIGS. 1 and 2, a short valve body guide cylinder is provided from around the valve seat 9.
30 is protruded, the valve body guide cylinder is formed with a notch 31 to allow liquid to flow in place, and the valve body 12 is inserted and moved movably,
Stoppers 32 and 33 are provided on the inner edge of the valve body guide tube 30 and the outer periphery of the front end of the valve body 12 to prevent the stoppers from coming off. In this case, the valve element guide cylinder 30 and the stoppers 32 and 33 allow the valve element 12 to be accurately opened and closed, and also hold the valve element 12 previously fitted during assembly to facilitate assembly. Other configurations and operations are the same as those in FIGS. 1 and 2, and description thereof will be omitted with reference to FIGS. 1 and 2.
【００１２】[0012]
【発明の効果】請求項１、請求項２、請求項３の発明に
よれば、既述構成により次の効果を奏する。 (1) ノズル５内に蓄圧タイプの吐出弁を内装させること
ができて、所定値以上の液圧の加圧液体のみをノズル孔
４から噴出させることができ、液垂れのない良好な噴出
を得ることができるばかりでなく、吐出弁をノズル孔４
の直近の背後に配することができ、この吐出弁からノズ
ル孔４に至るノズル内流路を極短小でかつ細いものとす
ることができ、トリガーの引き始めすなわちプランジャ
の押し込み当初において、最初の加圧液体がそのノズル
内流路を流下する間の時間的遅れや圧力ロスをほとんど
なくすることができ、効率を改善できる。 (2) 弁体12の中央に穿設した透孔14により、 ａ．小シリンダ10乃至弁体12内に弁室７内からの液体が
侵入しても、その侵入液体を弁体12の開弁に伴い弁室７
内の液圧と同圧でノズル孔４へ向けて流出させることが
でき、弁体12を支障なく開弁動作させることができる。 ｂ．トリガーの引き終わりすなわちプランジャの押し込
み終端において、弁体12の閉弁に伴い、小シリンダ10乃
至弁体12内の負圧化傾向で該小シリンダ10乃至弁体12内
にノズル孔４側の弁室７内の液体を引き込ませることが
でき、ノズル孔４内の液体を瞬時にして降圧させること
ができて、噴出が止む際の液切れを良好にでき、ノズル
孔４からの液垂れをなくすことができる。勿論、弁体12
に動作不良を生じさせることはなく、弁体12を支障なく
閉弁動作させることができる。 ｃ．弁室７にエアを供給して行う弁座９と弁体12との間
の漏れ試験において、小シリンダ10とスカート11との間
の漏れ試験をも同時に行うことができる。According to the first, second and third aspects of the present invention, the following effects can be obtained by the above-described configuration. (1) A pressure accumulating type discharge valve can be provided inside the nozzle 5, and only a pressurized liquid having a hydraulic pressure equal to or higher than a predetermined value can be ejected from the nozzle hole 4, so that good ejection without liquid dripping can be achieved. Not only can the nozzle hole 4
And the flow path in the nozzle from the discharge valve to the nozzle hole 4 can be made extremely short and small, and when the trigger starts to be pulled, that is, when the plunger is pushed in, the first time. A time delay and a pressure loss while the pressurized liquid flows down the flow path in the nozzle can be almost eliminated, and the efficiency can be improved. (2) By the through hole 14 formed in the center of the valve body 12, a. Even if liquid from inside the valve chamber 7 intrudes into the small cylinder 10 or the valve body 12, the intruding liquid is transmitted to the valve chamber 7 with the opening of the valve body 12.
The fluid can be discharged toward the nozzle hole 4 at the same pressure as the internal fluid pressure, and the valve body 12 can be opened without any trouble. b. At the end of pulling of the trigger, that is, at the end of pushing of the plunger, as the valve body 12 closes, the negative pressure in the small cylinder 10 through the valve body 12 tends to be negative, so that the valve on the nozzle hole 4 side in the small cylinder 10 through the valve body 12 The liquid in the chamber 7 can be drawn in, the liquid in the nozzle hole 4 can be instantaneously reduced in pressure, the liquid can be satisfactorily cut off when the ejection stops, and the dripping from the nozzle hole 4 is eliminated. be able to. Of course, valve 12
Therefore, the valve body 12 can be closed without any trouble. c. In a leak test between the valve seat 9 and the valve body 12 performed by supplying air to the valve chamber 7, a leak test between the small cylinder 10 and the skirt 11 can be performed at the same time.
【００１３】加えて、請求項２の発明によれば、上記小
シリンダ10乃至弁体12内に突設した先端が尖ったスプリ
ング支持棒15により、スプリング13の組み立てを容易に
することができる。In addition, according to the second aspect of the present invention, the spring 13 can be easily assembled by the spring support rod 15 having a sharp tip protruding from the small cylinder 10 to the valve body 12.
【００１４】また、請求項３の発明によれば、適所に液
体流通可能に切欠31を形成した短い弁体案内筒30を弁座
９の周辺から突設して、弁体12を出入可動に嵌挿させて
いるので、弁体12を的確に開閉動作させることができ、
また、組み立ての際には、予め弁体案内筒30に弁体12を
嵌挿保持させることで組み立てを容易にすることができ
る。According to the third aspect of the present invention, a short valve body guide tube 30 having a notch 31 formed in a proper position so that liquid can flow therethrough is protruded from the periphery of the valve seat 9 so that the valve body 12 can be moved in and out. Since it is fitted, the valve element 12 can be opened and closed accurately,
At the time of assembling, the valve body 12 is inserted and held in the valve body guide tube 30 in advance, thereby facilitating the assembly.
【図１】 請求項１及び請求項２のトリガー式液体噴出
器の吐出弁に係る発明の実施形態を示す閉弁状態におけ
る截断側面図である。FIG. 1 is a cut-away side view showing a discharge valve of a trigger type liquid ejector according to an embodiment of the present invention in a valve closed state.
【図２】 同実施形態の開弁状態における截断側面図で
ある。FIG. 2 is a sectional side view of the same embodiment in a valve-open state.
【図３】 請求項３のトリガー式液体噴出器の吐出弁に
係る発明の実施形態を示す閉弁状態における截断側面図
である。FIG. 3 is a cut-away side view showing a discharge valve of a trigger type liquid ejector according to an embodiment of the present invention in a valve closed state.
１…液体噴出器本体 ２…吐出側端部 ３…ノズル連結筒 ４…ノズル孔 ５…ノズル ６…吐出流路 ７…弁室 ８…弁孔 ９…弁座 10…小シリンダ 11…スカート 12…弁体 13…スプリング 14…透孔 15…スプリング支持棒 16…垂直片 17…嵌着横筒 18…係合突条 19…嵌合周壁 20…係合凹溝 21…嵌合内筒 22…環状深溝 23…ノズルピース 24…スピン溝付きノ
ズル孔 25…液体案内溝 26…棒体 27…案内片 28…蓋板 29…枢着 30…弁体案内筒 31…切欠 32，33…ストッパー 34…透孔DESCRIPTION OF SYMBOLS 1 ... Liquid ejector main body 2 ... Discharge side end part 3 ... Nozzle connection cylinder 4 ... Nozzle hole 5 ... Nozzle 6 ... Discharge flow path 7 ... Valve chamber 8 ... Valve hole 9 ... Valve seat 10 ... Small cylinder 11 ... Skirt 12 ... Valve 13: Spring 14: Through hole 15: Spring support rod 16: Vertical piece 17: Fitting horizontal cylinder 18 ... Engagement ridge 19 ... Fitting peripheral wall 20 ... Engagement groove 21 ... Fitting inner cylinder 22 ... Ring Deep groove 23 ... Nozzle piece 24 ... Nozzle hole with spin groove 25 ... Liquid guide groove 26 ... Bar 27 ... Guide piece 28 ... Lid plate 29 ... Pivot 30 ... Valve guide tube 31 ... Notch 32,33 ... Stopper 34 ... Transparent Hole
Claims (3)
出させたノズル連結筒３に、中央にノズル孔４を有する
キャップ状のノズル５を連結し、該ノズル５乃至ノズル
連結筒３の内側に上記液体噴出器本体１の吐出流路６と
連通する弁室７を形成し、該弁室７内には、そのノズル
５における上記ノズル孔４の直近の背後に該ノズル孔４
と連通する弁孔８及び後方に面する弁座９を設けるとと
もに、該弁座９に先端にて対峙させて先端開放、基端閉
塞でかつ内周が弁座９よりも大きな小シリンダ10を配備
させ、該小シリンダ10にスカート11を外周設したハット
状の弁体12を摺動自在に嵌合させ、該弁体12乃至小シリ
ンダ10内に該弁体12を付勢するスプリング13を内装して
該弁体12を上記弁座９へと押圧着座させ、該弁体12の中
央に透孔14を穿設したことを特徴とするトリガー式液体
噴出器の吐出弁。1. A cap-shaped nozzle 5 having a nozzle hole 4 in the center is connected to a nozzle connecting cylinder 3 protruding from a discharge side end 2 of a liquid ejector main body 1; A valve chamber 7 communicating with the discharge flow path 6 of the liquid ejector main body 1 is formed inside the nozzle chamber. In the valve chamber 7, the nozzle hole 4 is provided immediately behind the nozzle hole 4 in the nozzle 5.
A small cylinder 10 that is open at the front end, closes at the base end, and has an inner periphery larger than the valve seat 9. A spring 13 that slidably fits a hat-shaped valve body 12 provided with a skirt 11 around the small cylinder 10 and urges the valve body 12 from the valve body 12 to the small cylinder 10. A discharge valve for a trigger-type liquid ejector, wherein the valve body 12 is pressurized and seated on the valve seat 9 and a through hole 14 is formed in the center of the valve body 12.
の小シリンダ10の閉塞基端から先端を尖らせたスプリン
グ支持棒15を突設し、該スプリング支持棒に上記スプリ
ング13の基端部を嵌合支持させた請求項１記載のトリガ
ー式液体噴出器の吐出弁。2. A small-cylinder 10 or a valve element 12 has a spring support rod 15 having a sharpened tip protruding from the closed base end of the small cylinder 10 and a base of the spring 13 mounted on the spring support rod. 2. The discharge valve for a trigger type liquid ejector according to claim 1, wherein the end is fitted and supported.
を突設し、該弁体案内筒には、適所に液体流通可能に切
欠31を形成して弁体12を出入可動に嵌挿させた請求項１
又は請求項２記載のトリガー式液体噴出器の吐出弁。3. A short valve body guide cylinder 30 from the periphery of the valve seat 9.
A notch 31 is formed in the valve body guide cylinder so that liquid can flow therethrough, and the valve body 12 is inserted and moved movably.
Or a discharge valve of the trigger type liquid ejector according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20130396A JP3642887B2 (en) | 1996-07-10 | 1996-07-10 | Trigger type liquid ejector discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20130396A JP3642887B2 (en) | 1996-07-10 | 1996-07-10 | Trigger type liquid ejector discharge valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1024975A true JPH1024975A (en) | 1998-01-27 |
| JP3642887B2 JP3642887B2 (en) | 2005-04-27 |
Family
ID=16438770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20130396A Expired - Fee Related JP3642887B2 (en) | 1996-07-10 | 1996-07-10 | Trigger type liquid ejector discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3642887B2 (en) |
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| Publication number | Publication date |
|---|---|
| JP3642887B2 (en) | 2005-04-27 |
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