JP3985064B2

JP3985064B2 - Trigger type liquid ejector nozzle head

Info

Publication number: JP3985064B2
Application number: JP15893296A
Authority: JP
Inventors: 孝之阿部; 隆治田崎
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 1996-05-29
Filing date: 1996-05-29
Publication date: 2007-10-03
Anticipated expiration: 2016-05-29
Also published as: JPH09313998A

Description

【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ノズル先端に嵌着させる合成樹脂製のノズルヘッドに関する。
【０００２】
【従来の技術】
例えば実開平６−３４７５７号に記載されている様に、トリガー式液体噴出器のノズル本体に蓋板を設けたものが知られている。この蓋板は、ノズル本体の左右両側から支持壁を前方へ突設し、これ等両支持壁上部にノズル本体前面のノズル孔を閉塞する蓋板を枢着させ、蓋板の上端から指掛け板部を起立させている。また、ノズル孔の閉塞は蓋板裏面より突設した突起をノズル孔に液密に嵌着させることにより行っている。
【０００３】
【発明が解決しようとする課題】
上記従来例では、ノズル先端に別部材として形成する蓋板を枢着により装着させていたから、また、不使用時等に蓋板が不用意に回動してノズル孔から液洩れを生じるのを防止する為にトーションバネを組込んで蓋板を常時閉方向へ付勢させており、このトーションバネの組付けも併せて行わなくてはいけないため、組付けが面倒となる欠点があった。
【０００４】
また、トーションバネによる蓋板の付勢力では、容器が倒れる等の事態が生じた際に蓋板が開いてしまい噴出孔からの液の漏出が生じる虞もあった。
本発明は上記した点に鑑み、組付けが極めて容易に行えるとともに、ノズル孔の確実な密閉性を得られる優れたトリガー式液体噴出器のノズルヘッドを提案するものである。
【０００５】
【課題を解決するための手段】
本請求項１発明のノズルヘッドは上記課題を解決するため、ノズル本体２の前壁中央部から前方突出するノズル８外面へ嵌合させるとともに、前面左右周縁部に一対の嵌合枠13を突設してなる環状枠座11と、上記両嵌合枠13間上端部に弾性反転機構付きのヒンジ15を介して上端を連結することにより、上記各嵌合枠13間に嵌合してノズル８を閉塞する状態から枠座11上方へ起立する状態へ弾性反転可能に構成してなる蓋板12とからなり、全体を合成樹脂の一体成形により形成し、上記左右両嵌合枠13下端部内側面及び下面に開口する係合凹部24を形成するとともに、各凹部24に係合可能な係合突起25を蓋板12両側下部に突設してなることを特徴とするトリガー式液体噴出器のノズルヘッドとして構成した。
【０００６】
【発明の実施の形態】
以下、本発明の実施例の形態を図面を参照して説明する。
本発明のノズルヘッド１は、トリガー式液体噴出器のノズル本体２の前端部に嵌着固定させるものである。該ノズル本体２は公知のものが使用出来、例えば、図２にある如くトリガー式噴出器の液体送出筒３先端に嵌着可能に形成され、前壁４中心に液体噴出孔５を有し、該噴出孔を囲んで前壁後面からスピン機構６付きの主筒部７を後方へ、また、噴出孔５を囲んで前壁前面からノズル８を前方へ突出し、また、前壁４外周から送出筒３外面へ嵌合させる二重筒とした第１嵌合筒９を後方へ、また、前壁外周から後述する環状枠座の基部外面へ嵌合させる第２嵌合筒10を前方へ、それぞれ突出している。図示実施例では、第１，第２嵌合筒９，10を角部を面取りした、かつ頂角部を下方へ向けた略三角形の正面視形状に設けている。
【０００７】
また、ノズルヘッド１は環状枠座11及び蓋板12とを備え、合成樹脂の一体成形により形成している。
環状枠座11は、上記ノズル８外面へ嵌合させるとともに、前面左右周縁部に一対の嵌合枠13を突設している。この環状枠座11の正面視形状もノズル本体２と同様に頂角部を下方へ向けた三角形状でかつその角部を面取りした形状としている。
【０００８】
その環状枠座11の基部を図２が示すようにノズル本体２のノズル８と第２嵌合筒10との間へ凹凸の係合手段を介して係合させて固定させる。環状枠座11の基部周縁部は後向き段部14を介して縮径し、その縮径部分に、後向き段部14後面を第２嵌合筒10の前面へ接触させて、第２嵌合筒10を嵌合させる。
上記各嵌合枠13は、それらが形成する中央の凹部内上部に蓋板12を嵌合可能に構成したものであり、その外縁は基部外縁に沿って形成しており、また、内縁は、蓋板12の形状に合わせて、上下端が上下に延びる直線状で、中央部を円弧状に外方へ膨出させた正面視形状をなしている。また、各嵌合枠13間の下端部に於ける基部前面を前方へ隆起させてその前面に蓋板下端部が当接する如く構成している。
【０００９】
蓋板12は、上記両嵌合枠13間上端部に弾性反転機構付きのヒンジ15を介して上端を連結しており、上記各嵌合枠13間に嵌合して上記ノズル８を閉塞する状態から枠座11上方へ起立する状態に弾性反転が可能に構成している。
また、上記弾性反転機構付きのヒンジ15は公知例に従って形成すれば良く、図示の場合は、略くの字状にその中間を第１小ヒンジ16とする、上記枠座11側から突出する突部17と蓋板12側から突出する突部18とが形成する第１帯状部19と、該帯状部左右に設けた波板状の第２帯状部20とで形成し、第２帯状部20両端を枠座11側と蓋板12側とへ第２小ヒンジ21を介して連結している。第１小ヒンジ16は図２が示すように第２帯状部20よりも上方に位置させ、第１小ヒンジ16を中心とする蓋板12の起伏回動時第２帯状部はその回動途中まで弾性に抗して引き延ばされ、また、死点を過ぎると弾性復元するよう設けている。
【００１０】
本実施例に於いて、裏面中央部より上記ノズル８外周に着脱容易に嵌合する嵌合筒22を突設するとともに、その中央に棒栓23を突設し、棒栓23先端を上記噴出孔５に圧接してノズル８を液密に閉塞している。また、蓋体12の下端部は矩形状の指掛け部12a として構成し、その下端を環状枠座11下方に突出させて開蓋時に指を掛けられる如く構成している。
【００１１】
蓋板12は、弾性反転機構の存在でこのノズル閉塞状態で安定しているが、本発明では、この状態での蓋板12による更に確実な液密性を得るために、上記左右両嵌合枠13下端部内面及び下面に開口する係合凹部24をおのおの形成するとともに、各係合凹部24に係合可能な係合突起25を蓋板12両側下部に突設して閉蓋状態の蓋板12を係止可能に構成している。この様な係合凹部24は、下面を開口しているため、成形時その方向から型枠を抜くことが出来、その結果充分な奥行きと、シャープなコーナーを得られ、蓋板12の係合突起25をしっかりと係止出来てより良好なノズルの液密性を得られる。
【００１２】
【発明の効果】
以上説明した如く本発明ノズルヘッドは、ノズル本体２の前壁中央部から前方へ突出するノズル８外面へ嵌合させるととも前面左右周縁部に一対の嵌合枠13を突設してなる環状枠座11と、上記両嵌合枠13間上端部に弾性反転機構付きのヒンジ15を介して上端を連結するとともに、弾性反転機構により各嵌合枠13間に嵌合してノズル８を閉塞する状態から枠座11上方へ起立する状態へ弾性反転可能に構成してなる蓋板12とから構成しているため、しかも合成樹脂の一体成形により形成されているため、トーションバネ等の細かい部品を必要とせず、ノズル本体への装着が極めて簡単となる。
【００１３】
また、左右両嵌合枠13下端部内側面及び下面に開口する係合凹部24を形成するとともに、各凹部24に係合可能な係合突起25を蓋板12両側下部に突設したので、蓋板12によりノズル８の閉塞をより確実強固に行うことができ、通常時は勿論のこと、誤って装着した容器を倒した場合でも、衝撃で蓋板が開きノズル噴出孔からの液の漏出が生じるといった虞は極めて少ない。また、係合凹部24は下端を開口しているため、下を向いた下端開口は外方から見えることは少なく、外観を損なうことはない。
【図面の簡単な説明】
【図１】本発明の一実施例を示す斜視図である。
【図２】同実施例の閉蓋状態の要部縦断面図である。
【図３】同実施例の閉蓋状態の斜視図である。
【図４】同実施例の蓋板の係止部分を示す要部縦断面図である。
【符号の説明】
２…ノズル本体，８…ノズル，11…環状枠座，12…蓋板，13…嵌合枠，
15…ヒンジ，24…係合凹部，25…係合突部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a synthetic resin nozzle head to be fitted to the nozzle tip of a trigger type liquid ejector.
[0002]
[Prior art]
For example, as described in Japanese Utility Model Laid-Open No. 6-34757, a nozzle body of a trigger type liquid ejector provided with a cover plate is known. This lid plate has a support wall projecting forward from both the left and right sides of the nozzle body, and a lid plate that closes the nozzle hole on the front surface of the nozzle body is pivotally attached to the upper part of both of these support walls. Standing up part. Further, the nozzle hole is closed by fitting a projection projecting from the back surface of the cover plate into the nozzle hole in a liquid-tight manner.
[0003]
[Problems to be solved by the invention]
In the above conventional example, a lid plate formed as a separate member is attached to the tip of the nozzle by pivot attachment, and also prevents the lid plate from rotating carelessly when it is not used, etc., and causing liquid leakage from the nozzle hole. For this purpose, a torsion spring is incorporated so that the cover plate is always urged in the closing direction, and the torsion spring must be assembled together.
[0004]
Further, the urging force of the lid plate by the torsion spring may cause the lid plate to open when a situation such as the container falls, and liquid leakage from the ejection holes may occur.
In view of the above points, the present invention proposes a nozzle head of an excellent trigger type liquid ejector that can be assembled very easily and that can provide reliable sealing of nozzle holes.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the nozzle head according to the first aspect of the present invention is fitted to the outer surface of the nozzle 8 projecting forward from the center portion of the front wall of the nozzle body 2, and a pair of fitting frames 13 project from the left and right peripheral edge portions of the front surface. By connecting the upper end of the annular frame seat 11 and the upper end portion between the fitting frames 13 via a hinge 15 with an elastic reversing mechanism, the nozzles are fitted between the fitting frames 13. The cover plate 12 is configured to be elastically reversible from a state in which the cover 8 is closed to a state in which the frame seat 11 rises upward. The entire cover plate 12 is formed by integral molding of synthetic resin, The trigger-type liquid ejector is characterized in that engaging recesses 24 are formed in the side surfaces and the lower surface, and engaging protrusions 25 that can be engaged with the respective recesses 24 are provided to protrude on both lower portions of the lid plate 12. It was configured as a nozzle head.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The nozzle head 1 of the present invention is fitted and fixed to the front end portion of the nozzle body 2 of the trigger type liquid ejector. The nozzle body 2 can be a known one, for example, as shown in FIG. 2, formed to be fitted to the tip of the liquid delivery cylinder 3 of the trigger type ejector, and has a liquid ejection hole 5 at the center of the front wall 4; Surrounding the ejection hole, the main cylinder portion 7 with the spin mechanism 6 is projected rearward from the rear surface of the front wall, the nozzle 8 is projected forward from the front surface of the front wall so as to surround the ejection hole 5, and is delivered from the outer periphery of the front wall 4 The first fitting cylinder 9 which is a double cylinder fitted to the outer surface of the cylinder 3 is moved backward, and the second fitting cylinder 10 which is fitted from the outer periphery of the front wall to the outer surface of the base portion of the annular frame seat described later is moved forward. Each protrudes. In the illustrated embodiment, the first and second fitting cylinders 9 and 10 are provided in a substantially triangular front view shape with the corners chamfered and the apex corners directed downward.
[0007]
The nozzle head 1 includes an annular frame seat 11 and a cover plate 12, and is formed by integral molding of synthetic resin.
The annular frame seat 11 is fitted to the outer surface of the nozzle 8 and has a pair of fitting frames 13 protruding from the left and right peripheral edges of the front surface. Similarly to the nozzle body 2, the frontal shape of the annular frame seat 11 is a triangular shape with the apex corner facing downward, and the corner is chamfered.
[0008]
As shown in FIG. 2, the base portion of the annular frame seat 11 is engaged and fixed between the nozzle 8 of the nozzle main body 2 and the second fitting cylinder 10 through the engaging means of unevenness. The base peripheral edge portion of the annular frame seat 11 is reduced in diameter via the rearward stepped portion 14, and the rear surface of the rearward stepped portion 14 is brought into contact with the front surface of the second fitting tube 10 at the reduced diameter portion. Mate 10
Each of the fitting frames 13 is configured such that the lid plate 12 can be fitted to the upper part of the central recess formed by them, and the outer edge is formed along the base outer edge, and the inner edge is In accordance with the shape of the cover plate 12, the upper and lower ends are linearly extending vertically, and the center portion is formed in a front view shape bulging outward in an arc shape. The front surface of the base at the lower end between the fitting frames 13 is raised forward, and the lower end of the lid plate is in contact with the front surface.
[0009]
The cover plate 12 has an upper end connected to an upper end portion between the fitting frames 13 via a hinge 15 with an elastic reversing mechanism, and is fitted between the fitting frames 13 to close the nozzle 8. It is configured such that elastic reversal is possible from the state to the state where it stands up above the frame seat 11.
In addition, the hinge 15 with the elastic reversing mechanism may be formed according to a known example. In the case shown in the figure, a protrusion protruding from the frame seat 11 side having a substantially square shape with the first small hinge 16 in the middle. The first belt-like portion 19 formed by the portion 17 and the protrusion 18 protruding from the lid plate 12 side, and the corrugated second belt-like portion 20 provided on the left and right of the belt-like portion, are formed. Both ends are connected to the frame seat 11 side and the lid plate 12 side via a second small hinge 21. As shown in FIG. 2, the first small hinge 16 is positioned above the second belt-like portion 20, and the second belt-like portion is in the middle of turning when the cover plate 12 is pivoted around the first small hinge 16. It is stretched against the elasticity until it reaches the dead center, and is elastically restored after the dead point.
[0010]
In the present embodiment, a fitting tube 22 that is easily detachably fitted to the outer periphery of the nozzle 8 is projected from the center of the back surface, and a rod plug 23 is projected from the center thereof, and the tip of the rod plug 23 is ejected from the nozzle. The nozzle 8 is liquid-tightly closed in pressure contact with the hole 5. Further, the lower end portion of the lid 12 is configured as a rectangular finger-hanging portion 12a, and the lower end is configured to protrude downward from the annular frame seat 11 so that the finger can be hooked when the lid is opened.
[0011]
The cover plate 12 is stable in this nozzle closed state due to the presence of the elastic reversal mechanism, but in the present invention, in order to obtain more reliable liquid tightness by the cover plate 12 in this state, the above left and right fittings Engagement recesses 24 that open to the inner and lower surfaces of the lower end of the frame 13 are respectively formed, and engagement projections 25 that can be engaged with the respective engagement recesses 24 project from the lower portions of both sides of the lid plate 12 so that the lid is closed. The plate 12 is configured to be lockable. Since such an engagement recess 24 has an opening on the lower surface, the mold can be removed from that direction during molding, resulting in a sufficient depth and sharp corners, The protrusion 25 can be firmly locked to obtain better liquid-tightness of the nozzle.
[0012]
【The invention's effect】
As described above, the nozzle head according to the present invention has an annular shape in which a pair of fitting frames 13 project from the left and right peripheral edges of the front surface while being fitted to the outer surface of the nozzle 8 projecting forward from the center of the front wall of the nozzle body 2. The upper end of the frame seat 11 is connected to the upper end of the fitting frame 13 via a hinge 15 with an elastic reversing mechanism, and the nozzle 8 is closed by fitting between the fitting frames 13 by the elastic reversing mechanism. Because it is composed of a cover plate 12 that is configured to be elastically reversible from a state that stands up to a state that stands up above the frame seat 11, and because it is formed by integral molding of synthetic resin, it is a fine part such as a torsion spring Is not required, and mounting on the nozzle body is extremely simple.
[0013]
In addition, both the left and right fitting frames 13 are formed with engaging recesses 24 that open on the inner side surface and the lower surface of the lower end portion, and engaging projections 25 that can be engaged with the respective recesses 24 are provided on the lower portions of both sides of the lid plate 12. The plate 12 can block the nozzle 8 more securely and firmly, and the lid plate opens due to impact and the liquid leaks from the nozzle ejection hole even when the container that is mounted by mistake is tilted as well as normal. There is very little risk of it occurring. Further, since the engaging recess 24 has its lower end opened, the lower end opening facing downward is rarely seen from the outside, and the appearance is not impaired.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of an essential part in the closed state of the embodiment.
FIG. 3 is a perspective view of the embodiment in a closed state.
FIG. 4 is a longitudinal sectional view of a main part showing a locking portion of the lid plate of the same embodiment.
[Explanation of symbols]
2 ... Nozzle body, 8 ... Nozzle, 11 ... Annular frame seat, 12 ... Cover plate, 13 ... Fitting frame,
15 ... Hinges, 24 ... engaging recesses, 25 ... engaging projections

Claims

An annular frame seat 11 that is fitted to the outer surface of the nozzle 8 that protrudes forward from the center of the front wall of the nozzle body 2 and has a pair of fitting frames 13 projecting from the left and right peripheral edges of the front surface, and both the fitting frames 13 By connecting the upper end to the upper end portion via a hinge 15 with an elastic reversing mechanism, it is elastic from a state where the nozzle 8 is closed by being fitted between the fitting frames 13 to a state where the nozzle 8 is standing up. The cover plate 12 is configured to be reversible, and the whole is formed by integral molding of synthetic resin, and the engagement recess 24 that opens on the inner side surface and the lower surface of the lower left and right fitting frames 13 is formed. 2. A nozzle head of a trigger type liquid ejector, characterized in that engaging protrusions 25 that can be engaged with the recesses 24 are provided at the lower portions of both sides of the cover plate 12.