JP3701431B2 - Trigger type liquid ejector - Google Patents

Trigger type liquid ejector Download PDF

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Publication number
JP3701431B2
JP3701431B2 JP10535297A JP10535297A JP3701431B2 JP 3701431 B2 JP3701431 B2 JP 3701431B2 JP 10535297 A JP10535297 A JP 10535297A JP 10535297 A JP10535297 A JP 10535297A JP 3701431 B2 JP3701431 B2 JP 3701431B2
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Japan
Prior art keywords
cylinder
plunger
outer diameter
large outer
diameter portion
Prior art date
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Expired - Lifetime
Application number
JP10535297A
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Japanese (ja)
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JPH10277446A (en
Inventor
治夫 土田
弘幸 中村
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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Filing date
Publication date
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Priority to JP10535297A priority Critical patent/JP3701431B2/en
Publication of JPH10277446A publication Critical patent/JPH10277446A/en
Application granted granted Critical
Publication of JP3701431B2 publication Critical patent/JP3701431B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke

Description

【０００１】
【発明の属する技術分野】
本発明はトリガー式の液体噴出器に関する。
【０００２】
【従来の技術】
例えば実開平6‐34759 号が示すように、噴出器本体が有する起立筒中間部からシリンダを、かつ上端部から射出筒を、それぞれ前方突出し、又射出筒前部から前後方向へ揺動可能に垂設したトリガーの上部に、上記シリンダ内へ嵌合させたプランジヤ前端部を係止させたトリガー式液体噴出器が知られている。
【０００３】
【発明が解決しようとする課題】
上記、トリガー式液体噴出器は、トリガーの揺動運動をプランジヤの直進運動に変換してシリンダ内で往復させるから、トリガー引寄せ時において、シリンダに対してプランジヤが、従って又トリガーが左右方向へグラ付き易くなる筈である。このためシリンダ後壁の中央部からガイド杵を前方突出してプランジヤ内へ嵌合させることで上記グラ付きを防止しているが、例えば図３が示すような弁部材27をシリンダ内へ設ける場合は上記ガイド杵を設けることが出来ないこととなる。
本発明は上記ガイド杵以外の方法でプランジヤのグラ付きを防止できるよう設けたものである。
【０００４】
【課題を解決するための手段】
第１の手段として、容器体口頸部外面への嵌合用装着筒から垂直筒５を起立し、該垂直筒中間部からシリンダ６を、かつ上端部から射出筒７を、それぞれ前方突出し、射出筒前端にはノズル取付筒部材８を介してノズル９を嵌合すると共に、射出筒前部から前後方向へ揺動自在に垂下したトリガー10上部に、上記シリンダ６内へ嵌合させた後面開口で中空のプランジヤ11の前端部を係止させた、トリガー式液体噴出器において、
上記プランジヤ11の後端部と中間部とに、シリンダ内壁面へ水密に接する第１大外径部41と、シリンダ内径より僅かに小外径とした第２大外径部42とを形成して、該プランジヤがシリンダ６に対して前限に位置する状態において、プランジヤ前方側の第２大外径部42はシリンダの前部内に位置するよう設けた。
【０００５】
第２の手段として、上記第１の手段を有すると共にプランジヤ11を、第１大外径部41を後端部に有し、第２大外径部を有しないプランジヤ本体11a と、該プランジヤ本体の中間部外面へ嵌合して固着させた筒体11b とで形成し、該筒体11b を第２大外径部42とした。
【０００６】
第３の手段として、上記第１の手段を有すると共にプランジヤ11を、第１大外径部41を後端部に有する後方部材11c と、第２大外径部42を後端部に有する前方部材11d との二部材で形成し、後方部材前端ないし後方部材後端から連結筒部11e を突出し、該連結筒部を、前方部材ないし後方部材へ嵌合し固着させた。
【０００７】
【発明の実施の形態】
まずトリガー式液体噴出器の基本構造について簡単に説明すると、１は容器体口頸部外面へ螺合可能に設けた装着筒で、該装着筒の上部内から連結部材２を起立している。該部材は頂壁後部を貫設して嵌合筒３を起立し、該嵌合筒外面へ、噴出器本体４の有頂の垂直筒５を嵌合させている。垂直筒中間部からはシリンダ６を、かつ上端部からは射出筒７を、それぞれ前方突出し、又射出筒７前部にはノズル取付筒部材８を介してノズル９を嵌合させている。
【０００８】
上記射出筒前部の左右側方部からはトリガー10を前後方向へ揺動自在に垂下し、該トリガー上部に、上記シリンダ内へ嵌合させた後面開口で中空のプランジヤ11前端部を枢支させている。
【０００９】
通常上記嵌合筒３の下部内に吸込み弁を、かつ上部内に吐出弁を形成するが、本発明実施形態にあっては、上記嵌合筒３内を、吸上げパイプ21を介して容器体内と連通する第１流通路22と、射出筒７と連通する第２流通路23とに区分し、シリンダ後壁24の中央部から上記第１流通路22と連通する嵌合基筒25を、かつシリンダ後壁の外周部から上記第２流通路23と連通する短筒部26とを、それぞれ前方突出し、その嵌合基筒25外面へ合成樹脂材で一体成形した弁部材27を嵌合させて、該弁部材が有する弾性筒部と上記短筒部とで吐出弁を、又弁部材が有する弁板と嵌合基筒25前端面とで吸込み弁を形成している。
即ち、弁部材27を、図３が示すように基筒部28の前端から後外方へ弾性筒29を拡開突出すると共に、基筒部28前端から前方突出する複数の弾性螺線30先端に弁板31を付設して形成し、上記基筒部28を嵌合基筒25の後部外面へ嵌合させると共に、弾性筒29後端部を短筒部26内面へ圧接させて吐出弁32となし、又弁板31を嵌合基筒25前端面へ圧接させて吸込み弁33を形成させている。
【００１０】
プランジヤ11は、トリガー10引寄せにより上記弁部材27がプランジヤ11内へ遊挿可能に形成する。該プランジヤは、後端部と中間部とに、シリンダ内壁面へ水密に接する第１大外径部41と、シリンダ内径より僅かに小外径とした第２大外径部42とを形成し、該プランジヤがシリンダ６に対して図示のように前限に位置する状態で、プランジヤ前方側の第２大外径部42がシリンダの前部内に位置するよう設ける。
【００１１】
図１が示す第１実施形態において、プランジヤ11を、第１大外径部41を後端部に有して第２大外径部を有しないプランジヤ本体11a と、該プランジヤ本体の中間部外面へ嵌合固着させた筒体11b とで形成し、該筒体に第２大外径部42を付設した。図示例では筒体11b を、プランジヤ本体外面へ嵌合させた内筒後端の外向きフランジから外筒を前方突出して形成したが、このように二重筒でなくても差支えない。
【００１２】
図２が示す第２実施形態ではプランジヤ11を、第１大外径部41を後端部に有する後方部材11c と、第２大外径部42を後端部に有する前方部材11d との二部材で、後方部材前端から前方突出する連結筒部11e を前方部材11d 内へ嵌合固着させて形成した。但しその連結筒部11e は前方部材11d 後端から後方突出して、後方部材11c 内面へ嵌合させてもよい。又前方部材11d の後部を二重筒として、その外筒で第２大外径部42を形成しているが、二重筒である必要もない。
【００１３】
第２大外径部42は、プランジヤ11がシリンダ内でシリンダ軸線に対してガタ付かないよう設けるものであり、シリンダ内壁面に対して、望ましくは接触しないよう設ければよい。
【００１４】
【発明の効果】
本発明は既述構成とするものであり、プランジヤ11の後端部と中間部とに、シリンダ内壁面へ水密に接する第１大外径部41と、シリンダ内径よりも僅かに小外径とした第２大外径部42とを設けてプランジヤ11が前限に位置する状態で第２大外径部42がシリンダ前部内に位置するよう設けたから、シリンダ６に対してプランジヤ11が、従ってトリガーが図３が示すように左右にブレることを防止でき、従って又第１大外径部41の摩耗ないし変形を防止して、シリンダ内壁面に対する水密な接触状態を持続させることが出来る。
【００１５】
請求項２および請求項３記載の場合は、上記請求項１記載発明の効果を併せ有すると共に、そのプランジヤを二部材で形成したからその成形が容易である。
【図面の簡単な説明】
【図１】 第１実施形態で示す、本発明液体噴出器の縦断面図である。
【図２】 第２実施形態で示す、液体噴出器の縦断面図である。
【図３】 第１、第２両実施形態で使用している主要部材の断面図である。
【図４】 従来例液体噴出器の正面図である。
【符号の説明】
６…シリンダ 10…トリガー
11…プランジヤ 27…弁部材
41…第１大外径部 42…第２大外径部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a trigger type liquid ejector.
[0002]
[Prior art]
For example, as shown in Japanese Utility Model Publication No. Hei 6-34759, it is possible to project the cylinder from the middle of the upright cylinder of the main body of the ejector and the injection cylinder from the upper end, and swing back and forth from the front of the injection cylinder. 2. Description of the Related Art A trigger type liquid ejector is known in which a plunger front end fitted into the cylinder is locked on an upper part of a suspended trigger.
[0003]
[Problems to be solved by the invention]
The trigger type liquid ejector converts the swinging motion of the trigger into the rectilinear motion of the plunger and reciprocates in the cylinder. Therefore, when pulling the trigger, the plunger is moved with respect to the cylinder, and therefore the trigger is moved in the horizontal direction. It should be easy to get glazed. Therefore, the guide rod is projected forward from the center of the rear wall of the cylinder and fitted into the plunger to prevent the above-mentioned gratting. For example, when a valve member 27 as shown in FIG. The guide rod cannot be provided.
The present invention is provided so as to prevent the glare of the plunger using a method other than the guide rod.
[0004]
[Means for Solving the Problems]
As a first means, the vertical cylinder 5 is erected from the fitting cylinder for fitting to the outer surface of the container body neck and neck, the cylinder 6 is projected forward from the middle of the vertical cylinder, and the injection cylinder 7 is projected forward from the upper end, respectively. A nozzle 9 is fitted to the front end of the cylinder via a nozzle mounting cylinder member 8, and a rear opening is fitted into the cylinder 6 on the upper part of the trigger 10 that is swingably swingable in the front-rear direction from the front of the injection cylinder. In the trigger type liquid ejector that locked the front end of the hollow plunger 11 with
A first large outer diameter portion 41 that is in watertight contact with the inner wall surface of the cylinder and a second large outer diameter portion 42 that is slightly smaller than the cylinder inner diameter are formed at the rear end portion and the intermediate portion of the plunger 11. The second large outer diameter portion 42 on the front side of the plunger is provided so as to be positioned in the front portion of the cylinder in a state where the plunger is positioned at the front limit with respect to the cylinder 6.
[0005]
As the second means, the plunger 11 having the first means, the plunger 11 having the first large outer diameter portion 41 at the rear end, and not having the second large outer diameter portion, and the plunger main body The cylindrical body 11b is fitted to and fixed to the outer surface of the intermediate portion, and the cylindrical body 11b is defined as the second large outer diameter portion 42.
[0006]
The third means includes the first means, the plunger 11, the rear member 11c having the first large outer diameter portion 41 at the rear end portion, and the front having the second large outer diameter portion 42 at the rear end portion. The connecting cylinder portion 11e protrudes from the rear member front end or the rear member rear end, and the connecting cylinder portion is fitted and fixed to the front member or the rear member.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
First, the basic structure of the trigger type liquid ejector will be briefly described. Reference numeral 1 denotes a mounting cylinder that can be screwed to the outer surface of the container body neck and neck. The connecting member 2 stands up from the upper part of the mounting cylinder. The member penetrates the rear portion of the top wall to erect the fitting cylinder 3 and fits the vertical cylinder 5 with the top of the ejector body 4 to the outer surface of the fitting cylinder. The cylinder 6 protrudes from the middle of the vertical cylinder and the injection cylinder 7 projects from the upper end, and the nozzle 9 is fitted to the front of the injection cylinder 7 via the nozzle mounting cylinder member 8.
[0008]
From the left and right sides of the front of the injection cylinder, the trigger 10 is suspended so as to be swingable in the front-rear direction, and the front end of the hollow plunger 11 is pivotally supported by the rear opening that is fitted into the cylinder above the trigger. I am letting.
[0009]
Normally, a suction valve is formed in the lower part of the fitting cylinder 3 and a discharge valve is formed in the upper part. In the embodiment of the present invention, the inside of the fitting cylinder 3 is a container through a suction pipe 21. The first flow passage 22 communicating with the body and the second flow passage 23 communicating with the injection cylinder 7 are divided into a fitting base tube 25 communicating with the first flow passage 22 from the center of the cylinder rear wall 24. In addition, a short cylindrical portion 26 communicating with the second flow passage 23 is forwardly projected from the outer peripheral portion of the cylinder rear wall, and a valve member 27 integrally formed with a synthetic resin material is fitted to the outer surface of the fitting base tube 25. Thus, the elastic cylinder portion of the valve member and the short cylinder portion form a discharge valve, and the valve plate of the valve member and the fitting base tube 25 front end surface form a suction valve.
That is, as shown in FIG. 3, the valve member 27 projects from the front end of the base tube portion 28 to the rear outer side so that the elastic tube 29 expands and protrudes forward from the front end of the base tube portion 28. The valve plate 31 is attached to the discharge tube 32, and the base tube portion 28 is fitted to the rear outer surface of the fitting base tube 25 and the rear end portion of the elastic tube 29 is pressed against the inner surface of the short tube portion 26. The suction valve 33 is formed by pressing the valve plate 31 against the front end face of the fitting base tube 25.
[0010]
The plunger 11 is formed so that the valve member 27 can be freely inserted into the plunger 11 by pulling the trigger 10. The plunger forms a first large outer diameter portion 41 that is in watertight contact with the inner wall surface of the cylinder at a rear end portion and an intermediate portion, and a second large outer diameter portion 42 that is slightly smaller in outer diameter than the cylinder inner diameter. The second large outer diameter portion 42 on the front side of the plunger is provided so as to be positioned in the front portion of the cylinder in a state where the plunger is positioned at the front limit with respect to the cylinder 6 as illustrated.
[0011]
In the first embodiment shown in FIG. 1, the plunger 11, the plunger main body 11a having the first large outer diameter portion 41 at the rear end portion and not having the second large outer diameter portion, and the outer surface of the intermediate portion of the plunger main body And a cylindrical body 11b fitted and fixed to the cylindrical body, and a second large outer diameter portion 42 is attached to the cylindrical body. In the illustrated example, the cylinder 11b is formed by projecting the outer cylinder forward from the outward flange at the rear end of the inner cylinder fitted to the outer surface of the plunger main body. However, the cylinder 11b may not be a double cylinder.
[0012]
In the second embodiment shown in FIG. 2, the plunger 11 is composed of a rear member 11c having a first large outer diameter portion 41 at the rear end portion and a front member 11d having a second large outer diameter portion 42 at the rear end portion. A connecting cylinder portion 11e that protrudes forward from the front end of the rear member is fitted and fixed into the front member 11d. However, the connecting cylinder portion 11e may protrude rearward from the rear end of the front member 11d and be fitted to the inner surface of the rear member 11c. Further, although the rear portion of the front member 11d is a double cylinder and the second large outer diameter portion 42 is formed by the outer cylinder, it is not necessary to be a double cylinder.
[0013]
The second large outer diameter portion 42 is provided so that the plunger 11 does not rattle against the cylinder axis in the cylinder, and may be provided so as not to contact the inner wall surface of the cylinder.
[0014]
【The invention's effect】
The present invention has the above-described configuration, and includes a first large outer diameter portion 41 that is in watertight contact with the inner wall surface of the cylinder at a rear end portion and an intermediate portion of the plunger 11, and an outer diameter slightly smaller than the inner diameter of the cylinder. The second large outer diameter portion 42 is provided and the second large outer diameter portion 42 is provided in the front of the cylinder in a state where the plunger 11 is located at the front limit. As shown in FIG. 3, the trigger can be prevented from shaking left and right, and therefore, the wear or deformation of the first large outer diameter portion 41 can be prevented, and the watertight contact state with the inner wall surface of the cylinder can be maintained.
[0015]
In the case of Claim 2 and Claim 3, it has the effect of the invention of Claim 1 above, and the plunger is formed by two members, so that the molding is easy.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a liquid ejector of the present invention shown in a first embodiment.
FIG. 2 is a longitudinal sectional view of a liquid ejector shown in a second embodiment.
FIG. 3 is a cross-sectional view of main members used in both the first and second embodiments.
FIG. 4 is a front view of a conventional liquid ejector.
[Explanation of symbols]
6 ... Cylinder 10 ... Trigger
11 ... plunger 27 ... valve member
41 ... 1st large outside diameter part 42 ... 2nd large outside diameter part

Claims (3)

容器体口頸部外面への嵌合用装着筒から垂直筒５を起立し、該垂直筒中間部からシリンダ６を、かつ上端部から射出筒７を、それぞれ前方突出し、射出筒前端にはノズル取付筒部材８を介してノズル９を嵌合すると共に、射出筒前部から前後方向へ揺動自在に垂下したトリガー10上部に、上記シリンダ６内へ嵌合させた後面開口で中空のプランジヤ11の前端部を係止させた、トリガー式液体噴出器において、
上記プランジヤ11の後端部と中間部とに、シリンダ内壁面へ水密に接する第１大外径部41と、シリンダ内径より僅かに小外径とした第２大外径部42とを形成して、該プランジヤがシリンダ６に対して前限に位置する状態において、プランジヤ前方側の第２大外径部42はシリンダの前部内に位置するよう設けた
ことを特徴とする、トリガー式液体噴出器。The vertical cylinder 5 is erected from the fitting cylinder for fitting to the outer surface of the container body neck and neck, the cylinder 6 is projected forward from the middle of the vertical cylinder, and the injection cylinder 7 is projected forward from the upper end, and a nozzle is attached to the front end of the injection cylinder The nozzle 9 is fitted through the tubular member 8 and the hollow plunger 11 is fitted in the cylinder 6 on the upper part of the trigger 10 that hangs freely swinging forward and backward from the front of the injection cylinder. In the trigger type liquid ejector with the front end locked,
A first large outer diameter portion 41 that is in watertight contact with the inner wall surface of the cylinder and a second large outer diameter portion 42 that is slightly smaller than the cylinder inner diameter are formed at the rear end portion and the intermediate portion of the plunger 11. In the state where the plunger is located at the front limit with respect to the cylinder 6, the second large outer diameter portion 42 on the front side of the plunger is provided so as to be located in the front portion of the cylinder. vessel. プランジヤ11を、第１大外径部41を後端部に有し、第２大外径部を有しないプランジヤ本体11a と、該プランジヤ本体の中間部外面へ嵌合して固着させた筒体11b とで形成し、該筒体11b を第２大外径部42とした
ことを特徴とする、請求項１記載のトリガー式液体噴出器。Plunger 11 having a first large outer diameter portion 41 at the rear end and a plunger main body 11a having no second large outer diameter portion and a cylindrical body fitted and fixed to the outer surface of the intermediate portion of the plunger main body The trigger type liquid ejector according to claim 1, wherein the cylindrical body 11 b is a second large outer diameter portion 42. プランジヤ11を、第１大外径部41を後端部に有する後方部材11c と、第２大外径部42を後端部に有する前方部材11d との二部材で形成し、後方部材前端ないし後方部材後端から連結筒部11e を突出し、該連結筒部を、前方部材ないし後方部材へ嵌合し固着させた
ことを特徴とする、請求項１記載のトリガー式液体噴出器。The plunger 11 is formed by two members, a rear member 11c having a first large outer diameter portion 41 at the rear end portion and a front member 11d having a second large outer diameter portion 42 at the rear end portion. 2. The trigger type liquid ejector according to claim 1, wherein the connecting cylinder portion 11e protrudes from the rear end of the rear member, and the connecting cylinder portion is fitted and fixed to the front member or the rear member.
JP10535297A 1997-04-07 1997-04-07 Trigger type liquid ejector Expired - Lifetime JP3701431B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP10535297A JP3701431B2 (en) 1997-04-07 1997-04-07 Trigger type liquid ejector

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JPH10277446A JPH10277446A (en) 1998-10-20
JP3701431B2 true JP3701431B2 (en) 2005-09-28

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JP3708003B2 (en) * 2000-07-26 2005-10-19 正弘 古沢 Piston and cylinder equipment
JP5598924B2 (en) * 2011-02-28 2014-10-01 株式会社吉野工業所 Trigger type liquid ejector
JP6121308B2 (en) * 2013-10-31 2017-04-26 株式会社吉野工業所 Trigger type liquid ejector
JP6404100B2 (en) * 2014-11-28 2018-10-10 株式会社吉野工業所 Trigger type liquid ejector

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