JP2004314016A - Trigger type liquid injector - Google Patents

Trigger type liquid injector Download PDF

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Publication number
JP2004314016A
JP2004314016A JP2003114889A JP2003114889A JP2004314016A JP 2004314016 A JP2004314016 A JP 2004314016A JP 2003114889 A JP2003114889 A JP 2003114889A JP 2003114889 A JP2003114889 A JP 2003114889A JP 2004314016 A JP2004314016 A JP 2004314016A
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Japan
Prior art keywords
trigger
liquid
flow path
nozzle
type liquid
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
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JP2003114889A
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Japanese (ja)
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JP4392188B2 (en
Inventor
Tetsuya Kobayashi
徹也 小林
Takeshi Omi
毅 大海
Yoshinori Inagawa
義則 稲川
Shigeo Iizuka
茂雄 飯塚
Takayuki Abe
孝之 阿部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Yoshino Kogyosho Co Ltd
Original Assignee
Kao Corp
Yoshino Kogyosho Co Ltd
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Priority to JP2003114889A priority Critical patent/JP4392188B2/en
Publication of JP2004314016A publication Critical patent/JP2004314016A/en
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Publication of JP4392188B2 publication Critical patent/JP4392188B2/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
    • 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
    • B05B11/1042—Components or details
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trigger type liquid injector less prone to cause environmental stress breakage. <P>SOLUTION: This trigger type liquid injector is provided with a nozzle 20 in a front part of a trigger body 14, and a spin element 21 between a liquid passage of the trigger body 14 and an injection hole 23 of the nozzle 20. The trigger body 14 is integrally formed with the nozzle 20, and the spin element 21 is inserted in the hole 23 provided in the trigger body 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

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に関する。
【０００２】
【従来の技術】
特許文献１に記載の如く、トリガー式液体噴出器として、トリガーボディの前側にノズルを取付け、トリガーボディの液流路とノズルの噴出孔との間にスピンエレメントを設け、トリガーボディの液流路を圧送されてきた液体にスピンエレメント〜ノズルの液流路によって旋回動を与え、旋回された液体をノズルの噴出孔から噴出するものがある。
【０００３】
特許文献１のトリガー式液体噴出器では、スピンエレメントにノズルをしまり嵌めして固定するとともに、トリガーボディにスピンエレメントをしまり嵌めして固定している。
【０００４】
【特許文献１】
特開平８−３３２４２２（［００１１］、図１、図２）
【０００５】
【発明が解決しようとする課題】
特許文献１のトリガー式液体噴出器では、スピンエレメントとノズルのしまり嵌めの嵌合部、及びトリガーボディとスピンエレメントのしまり嵌めの嵌合部が、界面活性剤を含む漂白剤等の内容液に常に晒されながら、嵌合による応力を定常的に生じているから、環境応力破壊による破損を生じ易い。内容液が界面活性剤と次亜塩素酸ナトリウムを含有する場合には、界面活性剤と次亜塩素酸ナトリウムの相乗効果的影響により、更に破損を生じ易い。
【０００６】
本発明の課題は、環境応力破壊を生じにくいトリガー式液体噴出器を提供することにある。
【０００７】
【課題を解決するための手段】
請求項１の発明は、トリガーボディの前側にノズルを設け、トリガーボディの液流路とノズルの噴出孔との間にスピンエレメントを設けてなるトリガー式液体噴出器であって、トリガーボディとノズルを一体成形し、スピンエレメントをトリガーボディに設けた孔に挿入したものである。
【０００８】
【発明の実施の形態】
以下、図面を用いて本発明を詳細に説明する。トリガー式液体噴出器１０は、図１に示す如く、容器１１の開口部に接続される通液体１２を、該容器１１に螺着されるキャップ１３により該容器１１に固定する。トリガー式液体噴出器１０は、通液体１２にトリガーボディ１４を嵌合して一体化し（通液体１２とトリガーボディ１４は一体成形されても可）、トリガーボディ１４の主筒１４Ａをキャップ１３の側から起立し、主筒１４Ａの中間部から前方にシリンダ筒１４Ｂを突設し、主筒１４Ａの上端部から前方に射出筒１４Ｃを突設している。
【０００９】
トリガー式液体噴出器１０は、トリガーレバー１５の上端部をトリガーボディ１４の射出筒１４Ｃにおける前方側の両外側部に回動自在に枢着し、シリンダ筒１４Ｂに嵌合させたプランジャ１７の前端部にトリガーレバー１５の中間部の後面を係合させ、シリンダ筒１４Ｂに内蔵のスプリング１８によりプランジャ１７を介してトリガーレバー１５を前方に弾発させる。
【００１０】
トリガー式液体噴出器１０は、トリガーボディ１４の射出筒１４Ｃの前端にノズル２０を設け、トリガーボディ１４の射出筒１４Ｃに設けられる液流路ａと、ノズル２０の液流路ｃ、噴出孔ｄとの間には、液流路ａに連通する液流路ｂを備えるスピンエレメント２１が後述する如くに設けられる（図２参照）。
【００１１】
トリガー式液体噴出器１０は、容器１１の内部に延びるディップチューブ３１を通液体１２の下端部に挿着し、通液体１２の内部に入側逆止弁３２、出側逆止弁３３を設けている。
【００１２】
これにより、トリガー式液体噴出器１０にあっては、トリガーレバー１５の引き操作に基づくプランジャ１７の加圧動作により、シリンダ筒１４Ｂ内の液体を出側逆止弁３３経由で、射出筒１４Ｃの液流路ａ、スピンエレメント２１の液流路ｂ、ノズル２０の液流路ｃを介して噴出孔ｄから噴出する。また、トリガーレバー１５の引き操作解除に基づくプランジャ１７の戻り動作で、容器１１内の液体を入側逆止弁３２経由でシリンダ筒１４Ｂに吸込む。
【００１３】
尚、トリガー式液体噴出器１０は、トリガーボディ１４に支持されてトリガーボディ１４の上面部、背面部及び両側面部を覆うシュラウド４１により、ノズル２０の上側と両側部を覆う。シュラウド４１の天面の内面に設けた上係止部４２Ａをトリガーボディ１４の主筒１４Ａ又は射出筒１４Ｃの上面に設けた係止部４２Ｂに係止し、シュラウド４１の底面の前端側の内面に設けた下係止部４３Ａをトリガーボディ１４の主筒１４Ａの後面に設けた係止部４３Ｂに係止することにより、シュラウド４１をトリガーボディ１４に係止固定する。
【００１４】
また、トリガー式液体噴出器１０は、トリガーボディ１４に設けたノズル２０の外周に、トリガーレバー１５のためのストッパノブ４４の環状取付部４４Ａを回動可能に取着している。ストッパノブ４４を待機位置からストップ位置に回動させると、トリガーレバー１５がストッパノブ４４に係合して引き操作不可になる。
【００１５】
また、トリガー式液体噴出器１０は、ストッパノブ４４の環状取付部４４Ａの前面にカバー４５を着脱自在に有する。カバー４５は、ストッパノブ４４の環状取付部４４Ａに嵌着された状態で、ノズル２０の噴出孔ｄに棒状突起４５Ａを挿着し、物流段階での液洩れを防ぐ。
【００１６】
しかるに、トリガー式液体噴出器１０は、トリガーボディ１４に対するノズル２０、スピンエレメント２１の設置構造を以下の如くに構成する。
【００１７】
ノズル２０は、図１、図２に示す如く、トリガーボディー１４の射出筒１４Ｃの前端に一体成形（プラスチック等の一体成形）される。
【００１８】
スピンエレメント２１は、図１、図２に示す如く、トリガーボディ１４の射出筒１４Ｃに設けた孔２３に挿入される。孔２３は、トリガーボディー１４の主筒１４Ａから射出筒１４Ｃに渡って一直線上に延在され、主筒１４Ａの後側に開口し、その開口部に栓２４を封着される。シュラウド４１に一体成形した栓押え４６は、シュラウド４１をトリガーボディー１４に係止した状態で、栓２４を背面から支持する。
【００１９】
スピンエレメント２１は、先端側の小径部２１Ａと、基端側の大径部２１Ｂとを有し、孔２３は、前端側の小径部２３Ａと、後端側の大径部２３Ｂとを有する。スピンエレメント２１は、孔２３の開口部から挿入され、孔２３の中間部の液流路ａを通過し、小径部２１Ａの先端面を孔２３の小径部２３Ａの奥側端面に軸方向で当接させる位置に位置付け、大径部２１Ｂの基端面を孔２３の大径部２３Ｂの中間部の内周の位置に設けた環状若しくは１以上の点状突起２５等の衝合部に軸方向で当接させ、軸方向に位置決め保持される。
【００２０】
スピンエレメント２１の小径部２１Ａ、大径部２１Ｂは、孔２３の小径部２３Ａ、大径部２３Ｂに径方向、軸方向ともがたの生じない寸法関係にて挿入され、組み込まれる。
【００２１】
ノズル２０とスピンエレメント２１は、射出筒１４Ｃの液流路ａとノズル２０の噴出孔ｄとの間に以下の如くの液流路ｂ（ｂ１、ｂ２、ｂ３）、液流路ｃを備える（図２〜図６）。
【００２２】
スピンエレメント２１は、射出筒１４Ｃの液流路ａに常時連なる溝状の液流路ｂ１（図３）を大径部２１Ｂの外周の周方向の１以上の位置（本実施形態では２位置）にて軸方向に延在し、ノズル２０の液流路ｃに常時連なる溝状の液流路ｂ３（図５）を小径部２１Ａの外周の周方向の１以上の位置（本実施形態では２位置）にて軸方向に延在する。トリガーボディー１４の孔２３は、スピンエレメント２１の液流路ｂ１と液流路ｂ３を常時連通させる溝状の液流路ｂ２（図４）を、大径部２３Ｂの内周の周方向の１以上の位置（本実施形態では２位置）にて軸方向に延在する。液流路ｂ３は流路面積を液流路ｂ１、液流路ｂ２より絞られる。
【００２３】
ノズル２０は、孔２３の小径部２３Ａの奥側端面の中心部から外方に向けて噴出孔ｄを穿設するとともに、スピンエレメント２１の液流路ｂ３が連通する小径部２３Ａの奥側端面の外周側から噴出孔ｄに至る旋回流路を液流路ｃとして周方向の１以上の位置（本実施形態では２位置）に備える（図６）。
【００２４】
従って、トリガー式液体噴出器１０にあっては、射出筒１４Ｃの液流路ａの液体が、スピンエレメント２１の液流路ｂ１、トリガーボディ１４の液流路ｂ２、スピンエレメント２１の液流路ｂ３、ノズル２０の旋回流路ｃに圧送され、液流路ｂ２の絞り流路で流速を高められた状態で、旋回流路ｃで旋回動を付与された液体が噴出孔ｄから噴出せしめられる。このとき、ノズル２０に設けてある空気取入れ口２６から流入する空気が液体に混合して液体を泡化し、液体を泡状にして吐出可能にする。
【００２５】
トリガー式液体噴出器１０の内容液としては、例えば界面活性剤と次亜塩素酸ナトリウムを含有する液体を採用できる。
【００２６】
本実施形態によれば以下の作用効果を奏する。
（請求項１に対応する作用効果）
▲１▼トリガーボディ１４とノズル２０を一体成形したから、トリガーボディ１４にスピンエレメント２１を介してノズル２０をしまり嵌めして固定することがない。従って、トリガーボディ１４とノズル２０が内容液に晒されるにしても、両方の部材に環境応力破壊を誘引するような応力を生ずることがなく、破損を引き起こさない。
【００２７】
▲２▼スピンエレメント２１をトリガーボディ１４に設けた孔２３に単に挿入して嵌め合いの嵌合代を小さくして納めることにより、スピンエレメント２１をトリガーボディ１４に組付けできる。従って、トリガーボディ１４とスピンエレメント２１の組付部が内容液に晒されるにしても、その組付部に環境応力破壊を誘引するような応力を生ずることがなく、破損を引き起こさない。
【００２８】
（請求項２に対応する作用効果）
▲３▼スピンエレメント２１をトリガーボディ１４に対する組付部で径方向、軸方向にガタの生じない寸法関係で挿入することにより、その組付部に環境応力破壊を誘引するような応力の発生を確実に排除できる。
【００２９】
（請求項３に対応する作用効果）
▲４▼トリガーボディ１４の後側に、スピンエレメント２１を挿入する孔２３を開口したから、スピンエレメント２１の組付性が良い。
【００３０】
（請求項４〜６に対応する作用効果）
▲５▼内容液が次亜塩素酸ナトリウムを含有する洗浄剤等の液体であっても、トリガーボディ１４とノズル２０とスピンエレメント２１の環境応力破壊を防止できる。
【００３１】
図７〜図１０の変形例は、スピンエレメント２１の外径をストレート状にするとともに、孔２３のスピンエレメント２１が挿入される部分の孔径をストレート状にした。この場合にも、スピンエレメント２１は、孔２３の開口部から挿入され、孔２３の中間部の液流路ａを通過し、先端面を孔２３の奥側端面に軸方向で当接させる位置に位置付け、基端面を孔２３の中間部の内周の位置に設けた環状若しくは１以上の点状突起２５等の衝合部に軸方向で当接させ、軸方向に位置決め保持される。スピンエレメント２１は、孔２３に径方向、軸方向ともがたの生じない寸法関係にて挿入され、組込まれる。
【００３２】
また、図７〜図１０のトリガー式液体噴出器１０において、スピンエレメント２１は、射出筒１４Ｃの液流路ａとノズル２０の噴出孔ｄとの間に、液流路ｂ（ｂ１、ｂ２）と旋回流路ｃを以下の如くに設けた。スピンエレメント２１は、射出筒１４Ｃの液流路ａに常時連なる溝状の液流路ｂ１（図８）をスピンエレメント２１の外周の周方向の１以上の位置（本実施形態では２位置）にて軸方向に延在するとともに、液流路ｂ１に常時連なる、液流路ｂ１より流路面積を絞った溝状の液流路ｂ２（図９）をスピンエレメント２１の外周の周方向の１以上の位置（本実施形態では２位置）にて軸方向に延在し、更に液流路ｂ２とノズル２０の噴出孔ｄを常時つなぐ旋回流路ｃをスピンエレメント２１の先端面に備える（図１０）。
【００３３】
従って、図７〜図１０のトリガー式液体噴出器１０にあっては、射出筒１４Ｃの液流路ａの液体が、スピンエレメント２１の液流路ｂ１、液流路ｂ２にて圧送され、液流路ｂ２の絞り流路で流速を高められた状態で、旋回流路ｃにおいて旋回動を付与され、噴出孔ｄから噴出せしめられる。
【００３４】
即ち、トリガー式液体噴出器１０にあっては、図７〜図１０の変形例の如く、射出筒１４Ｃの液流路ａとノズル２０の噴出孔ｄとの間の溝状の液流路を、トリガーボディ１４に設けず、スピンエレメント２１にのみ設けることができる。尚、射出筒１４Ｃの液流路ａとノズル２０の噴出孔ｄとの間の溝状の液流路を、スピンエレメント２１に設けず、トリガーボディ１４にのみ設けることもできる。
【００３５】
【発明の効果】
本発明によれば、環境応力破壊を生じにくいトリガー式液体噴出器を提供することができる。
【図面の簡単な説明】
【図１】図１はトリガー式液体噴出器を示す断面図である。
【図２】図２は図１の要部拡大図である。
【図３】図３は図２のＩＩＩ−ＩＩＩに沿う断面図である。
【図４】図４は図２のＩＶ−ＩＶに沿う断面図である。
【図５】図５は図２のＶ−Ｖに沿う断面図である。
【図６】図６は図２のＶＩ−ＶＩに沿う断面図である。
【図７】図７はトリガー式液体噴出器の変形例の要部を示す断面図である。
【図８】図８は図７のＶＩＩＩ−ＶＩＩＩに沿う断面図である。
【図９】図９は図７のＩＸ−ＩＸに沿う断面図である。
【図１０】図１０は図７のＸ−Ｘに沿う断面図である。
【符号の説明】
１０ トリガー式液体噴出器
１４ トリガーボディ
２０ ノズル
２１ スピンエレメント
２３ 孔
２４ 栓[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a trigger type liquid ejector.
[0002]
[Prior art]
As described in Patent Document 1, as a trigger type liquid ejector, a nozzle is attached to the front side of a trigger body, and a spin element is provided between a liquid passage of the trigger body and an ejection hole of the nozzle, and a liquid passage of the trigger body is provided. There is a type in which a swirling motion is applied to the liquid that has been pressure-fed by the liquid flow path of the spin element to the nozzle, and the swirled liquid is ejected from the ejection hole of the nozzle.
[0003]
In the trigger type liquid ejector of Patent Document 1, the nozzle is tightly fitted to the spin element and fixed, and the spin element is tightly fitted to the trigger body and fixed.
[0004]
[Patent Document 1]
JP-A-8-332422 ([0011], FIGS. 1 and 2)
[0005]
[Problems to be solved by the invention]
In the trigger type liquid ejector of Patent Document 1, the fitting portion of the tight fit between the spin element and the nozzle, and the fitting portion of the tight fit between the trigger body and the spin element are connected to a content liquid such as a bleach containing a surfactant. Since the stress due to fitting is constantly generated while being constantly exposed, it is easy to cause damage due to environmental stress destruction. When the content liquid contains a surfactant and sodium hypochlorite, damage is more likely to occur due to a synergistic effect of the surfactant and sodium hypochlorite.
[0006]
An object of the present invention is to provide a trigger type liquid ejector that is less likely to cause environmental stress destruction.
[0007]
[Means for Solving the Problems]
An invention according to claim 1 is a trigger type liquid ejector comprising a nozzle provided on a front side of a trigger body and a spin element provided between a liquid flow path of the trigger body and an ejection hole of the nozzle. And the spin element is inserted into a hole provided in the trigger body.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the trigger type liquid ejector 10 fixes the liquid passing through 12 connected to the opening of the container 11 to the container 11 with a cap 13 screwed to the container 11. In the trigger type liquid ejector 10, the trigger body 14 is fitted to the liquid passage 12 to be integrated (the liquid passage 12 and the trigger body 14 may be integrally formed), and the main cylinder 14A of the trigger body 14 is Standing from the side, a cylinder cylinder 14B protrudes forward from an intermediate portion of the main cylinder 14A, and an injection cylinder 14C protrudes forward from the upper end of the main cylinder 14A.
[0009]
The trigger type liquid ejector 10 is configured such that the upper end of the trigger lever 15 is rotatably pivotally connected to both front outer sides of the injection cylinder 14C of the trigger body 14, and the front end of the plunger 17 fitted to the cylinder cylinder 14B. The rear surface of the intermediate portion of the trigger lever 15 is engaged with the portion, and the trigger lever 15 is resiliently moved forward through the plunger 17 by the spring 18 built in the cylinder cylinder 14B.
[0010]
The trigger type liquid ejector 10 is provided with a nozzle 20 at the front end of an injection cylinder 14C of the trigger body 14, a liquid flow path a provided in the injection cylinder 14C of the trigger body 14, a liquid flow path c of the nozzle 20, and an ejection hole d. A spin element 21 having a liquid flow path b communicating with the liquid flow path a is provided between them as described later (see FIG. 2).
[0011]
In the trigger type liquid ejector 10, a dip tube 31 extending into the container 11 is inserted into a lower end portion of the liquid 12, and an inlet check valve 32 and an outlet check valve 33 are provided inside the liquid 12. ing.
[0012]
As a result, in the trigger type liquid ejector 10, the liquid in the cylinder cylinder 14 </ b> B is discharged from the injection cylinder 14 </ b> C via the output side check valve 33 by the pressurizing operation of the plunger 17 based on the pulling operation of the trigger lever 15. The liquid is ejected from the ejection hole d via the liquid flow path a, the liquid flow path b of the spin element 21, and the liquid flow path c of the nozzle 20. In addition, by the return operation of the plunger 17 based on the release of the pull operation of the trigger lever 15, the liquid in the container 11 is sucked into the cylinder tube 14B via the inlet-side check valve 32.
[0013]
The trigger-type liquid ejector 10 covers the upper side and both sides of the nozzle 20 with a shroud 41 supported by the trigger body 14 and covering the upper surface, the rear surface, and both side surfaces of the trigger body 14. The upper locking portion 42A provided on the inner surface of the top surface of the shroud 41 is locked to the locking portion 42B provided on the upper surface of the main cylinder 14A or the injection cylinder 14C of the trigger body 14, and the inner surface on the front end side of the bottom surface of the shroud 41. The shroud 41 is locked and fixed to the trigger body 14 by locking the lower locking portion 43A provided on the trigger body 14 to the locking portion 43B provided on the rear surface of the main cylinder 14A of the trigger body 14.
[0014]
In the trigger type liquid ejector 10, an annular mounting portion 44A of a stopper knob 44 for the trigger lever 15 is rotatably attached to an outer periphery of a nozzle 20 provided in the trigger body 14. When the stopper knob 44 is rotated from the standby position to the stop position, the trigger lever 15 engages with the stopper knob 44 and the pulling operation becomes impossible.
[0015]
In addition, the trigger type liquid ejector 10 has a cover 45 detachably on the front surface of the annular mounting portion 44A of the stopper knob 44. The cover 45 inserts the rod-shaped protrusion 45A into the ejection hole d of the nozzle 20 in a state of being fitted to the annular mounting portion 44A of the stopper knob 44, thereby preventing liquid leakage at the distribution stage.
[0016]
However, the trigger type liquid ejector 10 has a structure for installing the nozzle 20 and the spin element 21 with respect to the trigger body 14 as follows.
[0017]
As shown in FIGS. 1 and 2, the nozzle 20 is integrally formed (integrally formed of plastic or the like) at the front end of the injection cylinder 14C of the trigger body 14.
[0018]
The spin element 21 is inserted into a hole 23 provided in the injection cylinder 14C of the trigger body 14, as shown in FIGS. The hole 23 extends in a straight line from the main cylinder 14A of the trigger body 14 to the injection cylinder 14C, opens to the rear side of the main cylinder 14A, and the stopper 24 is sealed in the opening. The stopper 46 integrally formed with the shroud 41 supports the stopper 24 from the back while the shroud 41 is locked to the trigger body 14.
[0019]
The spin element 21 has a small-diameter portion 21A on the distal end side and a large-diameter portion 21B on the proximal end side, and the hole 23 has a small-diameter portion 23A on the front end side and a large-diameter portion 23B on the rear end side. The spin element 21 is inserted through the opening of the hole 23, passes through the liquid flow path a in the middle of the hole 23, and axially contacts the distal end surface of the small diameter portion 21 </ b> A to the rear end surface of the small diameter portion 23 </ b> A of the hole 23. The base end face of the large-diameter portion 21B is positioned at the inner periphery of the middle portion of the large-diameter portion 23B of the hole 23 in the axial direction. They are brought into contact and positioned and held in the axial direction.
[0020]
The small-diameter portion 21A and the large-diameter portion 21B of the spin element 21 are inserted and incorporated into the small-diameter portion 23A and the large-diameter portion 23B of the hole 23 in a dimensional relationship that does not cause any looseness in the radial direction and the axial direction.
[0021]
The nozzle 20 and the spin element 21 are provided with a liquid flow path b (b1, b2, b3) and a liquid flow path c between the liquid flow path a of the injection cylinder 14C and the ejection hole d of the nozzle 20 as follows (b1). 2 to 6).
[0022]
The spin element 21 has a groove-shaped liquid flow path b1 (FIG. 3) that is always connected to the liquid flow path a of the injection cylinder 14C at one or more positions (two positions in the present embodiment) in the circumferential direction of the outer periphery of the large diameter portion 21B. The groove-shaped liquid flow path b3 (FIG. 5) extending in the axial direction at all times and continuously connected to the liquid flow path c of the nozzle 20 is positioned at one or more positions in the circumferential direction of the outer periphery of the small diameter portion 21A (2 in this embodiment). At the position). The hole 23 of the trigger body 14 is provided with a groove-shaped liquid flow path b2 (FIG. 4) that constantly connects the liquid flow path b1 and the liquid flow path b3 of the spin element 21 to one in the circumferential direction of the inner circumference of the large diameter portion 23B. It extends in the axial direction at the above positions (two positions in this embodiment). The liquid passage b3 has a smaller flow passage area than the liquid passage b1 and the liquid passage b2.
[0023]
The nozzle 20 has an ejection hole d formed outward from the center of the back end surface of the small diameter portion 23A of the hole 23, and the back end surface of the small diameter portion 23A to which the liquid flow path b3 of the spin element 21 communicates. The swirl flow path from the outer peripheral side to the ejection hole d is provided at one or more positions (two positions in the present embodiment) in the circumferential direction as a liquid flow path c (FIG. 6).
[0024]
Therefore, in the trigger-type liquid ejector 10, the liquid in the liquid flow path a of the injection cylinder 14C is supplied to the liquid flow path b1 of the spin element 21, the liquid flow path b2 of the trigger body 14, and the liquid flow path of the spin element 21. b3, the liquid swirled in the swirl flow path c is ejected from the ejection hole d in a state where the liquid is pressure-fed to the swirl flow path c of the nozzle 20 and the flow velocity is increased in the throttle flow path of the liquid flow path b2. . At this time, the air flowing from the air intake 26 provided in the nozzle 20 is mixed with the liquid to foam the liquid, and the liquid is foamed to be able to be discharged.
[0025]
As the content liquid of the trigger type liquid ejector 10, for example, a liquid containing a surfactant and sodium hypochlorite can be adopted.
[0026]
According to the present embodiment, the following operational effects can be obtained.
(Operation and Effect Corresponding to Claim 1)
{Circle around (1)} Since the trigger body 14 and the nozzle 20 are integrally formed, the nozzle 20 is not tightly fitted to the trigger body 14 via the spin element 21 and fixed. Therefore, even if the trigger body 14 and the nozzle 20 are exposed to the liquid content, no stress is induced in both members to induce environmental stress destruction, and no damage is caused.
[0027]
{Circle around (2)} The spin element 21 can be assembled to the trigger body 14 simply by inserting the spin element 21 into the hole 23 provided in the trigger body 14 and reducing the fitting allowance. Therefore, even when the assembly portion of the trigger body 14 and the spin element 21 is exposed to the liquid content, no stress that induces environmental stress destruction is generated in the assembly portion, and no damage is caused.
[0028]
(Operation and Effect Corresponding to Claim 2)
{Circle around (3)} By inserting the spin element 21 into the mounting portion with respect to the trigger body 14 in a dimensional relationship that does not cause play in the radial and axial directions, generation of stress that induces environmental stress destruction in the mounting portion. Can be reliably eliminated.
[0029]
(Operation and Effect Corresponding to Claim 3)
{Circle around (4)} Since the hole 23 for inserting the spin element 21 is opened on the rear side of the trigger body 14, the spin element 21 can be easily assembled.
[0030]
(Operation and Effect Corresponding to Claims 4 to 6)
(5) Even when the content liquid is a liquid such as a cleaning agent containing sodium hypochlorite, environmental stress destruction of the trigger body 14, the nozzle 20, and the spin element 21 can be prevented.
[0031]
In the modified examples of FIGS. 7 to 10, the outer diameter of the spin element 21 is made straight and the hole diameter of the hole 23 into which the spin element 21 is inserted is made straight. Also in this case, the spin element 21 is inserted from the opening of the hole 23, passes through the liquid flow path a in the middle part of the hole 23, and makes the front end surface abut the rear end surface of the hole 23 in the axial direction. , And the base end face is axially abutted against an abutting portion such as an annular or one or more dot-like projections 25 provided at a position on the inner periphery of the intermediate portion of the hole 23, and is positioned and held in the axial direction. The spin element 21 is inserted into the hole 23 in a dimensional relationship that does not cause play in the radial direction and the axial direction and is incorporated.
[0032]
In the trigger type liquid ejector 10 shown in FIGS. 7 to 10, the spin element 21 is provided between the liquid passage a of the injection cylinder 14C and the ejection hole d of the nozzle 20, and the liquid passage b (b1, b2). And the swirling channel c were provided as follows. The spin element 21 moves the groove-shaped liquid flow path b1 (FIG. 8) that is always connected to the liquid flow path a of the injection cylinder 14C at one or more positions (two positions in the present embodiment) in the circumferential direction of the outer periphery of the spin element 21. A groove-shaped liquid flow path b2 (FIG. 9) extending in the axial direction and always connected to the liquid flow path b1 and having a smaller flow path area than the liquid flow path b1 is formed in the circumferential direction of the outer periphery of the spin element 21. A swirl flow path c extending in the axial direction at the above positions (two positions in the present embodiment) and constantly connecting the liquid flow path b2 and the ejection hole d of the nozzle 20 is provided on the tip end surface of the spin element 21 (FIG. 10).
[0033]
Therefore, in the trigger type liquid ejector 10 of FIGS. 7 to 10, the liquid in the liquid flow path a of the injection cylinder 14C is pumped through the liquid flow path b1 and the liquid flow path b2 of the spin element 21, and In a state where the flow velocity is increased in the throttle flow path of the flow path b2, a swirling motion is given in the swirl flow path c, and the jet is ejected from the jet hole d.
[0034]
That is, in the trigger type liquid ejector 10, as in the modified examples of FIGS. 7 to 10, the groove-shaped liquid passage between the liquid passage a of the injection cylinder 14 </ b> C and the ejection hole d of the nozzle 20 is formed. , Can be provided only on the spin element 21 without being provided on the trigger body 14. Note that the groove-shaped liquid flow path between the liquid flow path a of the injection cylinder 14C and the ejection hole d of the nozzle 20 may be provided only in the trigger body 14 without being provided in the spin element 21.
[0035]
【The invention's effect】
According to the present invention, it is possible to provide a trigger-type liquid ejector that is less likely to cause environmental stress destruction.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a trigger type liquid ejector.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a sectional view taken along a line III-III in FIG. 2;
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;
FIG. 5 is a sectional view taken along the line VV of FIG. 2;
FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2;
FIG. 7 is a sectional view showing a main part of a modified example of the trigger type liquid ejector.
FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7;
FIG. 9 is a sectional view taken along IX-IX of FIG. 7;
FIG. 10 is a sectional view taken along line XX of FIG. 7;
[Explanation of symbols]
Reference Signs List 10 Trigger type liquid ejector 14 Trigger body 20 Nozzle 21 Spin element 23 Hole 24 Stopper

Claims (6)

トリガーボディの前側にノズルを設け、トリガーボディの液流路とノズルの噴出孔との間にスピンエレメントを設けてなるトリガー式液体噴出器であって、
トリガーボディとノズルを一体成形し、スピンエレメントをトリガーボディに設けた孔に挿入したトリガー式液体噴出器。A trigger type liquid ejector comprising a nozzle provided on a front side of a trigger body, and a spin element provided between a liquid flow path of the trigger body and an ejection hole of the nozzle,
A trigger-type liquid ejector in which a trigger body and a nozzle are integrally formed, and a spin element is inserted into a hole provided in the trigger body. 前記スピンエレメントをトリガーボディに設けた孔に径方向、軸方向にガタの生じない寸法関係で挿入された請求項１に記載のトリガー式液体噴出器。2. The trigger type liquid ejector according to claim 1, wherein the spin element is inserted into a hole provided in the trigger body in a dimensional relationship that does not cause backlash in a radial direction and an axial direction. 前記トリガーボディに設けた孔を該トリガーボディの後側に開口し、該孔の開口部に栓を設けた請求項１又は２に記載のトリガー式液体噴出器。The trigger type liquid ejector according to claim 1 or 2, wherein a hole provided in the trigger body is opened to the rear side of the trigger body, and a plug is provided in an opening of the hole. 前記噴出器の内容液が次亜塩素酸ナトリウムを含有する液体である請求項１〜３のいずれかに記載のトリガー式液体噴出器。The trigger type liquid ejector according to any one of claims 1 to 3, wherein the content liquid of the ejector is a liquid containing sodium hypochlorite. 前記噴出器の内容液が次亜塩素酸ナトリウムを含有する洗浄剤である請求項１〜４のいずれかに記載のトリガー式液体噴出器。The trigger type liquid ejector according to any one of claims 1 to 4, wherein the content liquid of the ejector is a cleaning agent containing sodium hypochlorite. 前記噴出器の内容液が次亜塩素酸ナトリウムと界面活性剤を含有する洗浄剤である請求項１〜４のいずれかに記載のトリガー式液体噴出器。The trigger type liquid ejector according to any one of claims 1 to 4, wherein the content liquid of the ejector is a cleaning agent containing sodium hypochlorite and a surfactant.
JP2003114889A 2003-04-18 2003-04-18 Trigger type liquid ejector Expired - Lifetime JP4392188B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011177634A (en) * 2010-02-26 2011-09-15 Yoshino Kogyosho Co Ltd Atomizer
JP2014148337A (en) * 2013-01-31 2014-08-21 Yoshino Kogyosho Co Ltd Syringe type spray container
JP2017529225A (en) * 2014-08-15 2017-10-05 ディエルエイチ・ボウルズ・インコーポレイテッドｄｌｈＢＯＷＬＥＳ Ｉｎｃ． Multi-inlet multi-spray fluid cup nozzle with shared interaction area and spray generation method
US11154876B2 (en) 2011-04-19 2021-10-26 Dlhbowles, Inc. Multi-inlet, multi-spray fluidic cup nozzle with shared interaction region and spray generation method
IT202100003749A1 (en) * 2021-02-18 2022-08-18 Guala Dispensing Spa TRIGGER DELIVERY DEVICE WITH HALF VALVES

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011177634A (en) * 2010-02-26 2011-09-15 Yoshino Kogyosho Co Ltd Atomizer
US11154876B2 (en) 2011-04-19 2021-10-26 Dlhbowles, Inc. Multi-inlet, multi-spray fluidic cup nozzle with shared interaction region and spray generation method
JP2014148337A (en) * 2013-01-31 2014-08-21 Yoshino Kogyosho Co Ltd Syringe type spray container
JP2017529225A (en) * 2014-08-15 2017-10-05 ディエルエイチ・ボウルズ・インコーポレイテッドｄｌｈＢＯＷＬＥＳ Ｉｎｃ． Multi-inlet multi-spray fluid cup nozzle with shared interaction area and spray generation method
IT202100003749A1 (en) * 2021-02-18 2022-08-18 Guala Dispensing Spa TRIGGER DELIVERY DEVICE WITH HALF VALVES
WO2022175867A1 (en) * 2021-02-18 2022-08-25 Guala Dispensing S.P.A. Trigger dispensing device with valve means

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