JP4440659B2 - Trigger type liquid ejector - Google Patents

Trigger type liquid ejector Download PDF

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JP4440659B2
JP4440659B2 JP2004022725A JP2004022725A JP4440659B2 JP 4440659 B2 JP4440659 B2 JP 4440659B2 JP 2004022725 A JP2004022725 A JP 2004022725A JP 2004022725 A JP2004022725 A JP 2004022725A JP 4440659 B2 JP4440659 B2 JP 4440659B2
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cylinder
piston
wall surface
trigger type
liquid ejector
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JP2005211807A (en
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茂 早川
伸夫 山中
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Yoshino Kogyosho Co Ltd
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Yoshino Kogyosho Co Ltd
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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
    • B05B11/0005—Components or details
    • B05B11/0008—Sealing or attachment arrangements between sprayer and container
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means

Description

本発明は、トリガー式液体噴出器に関するものであり、該噴出器に組み込まれるポンプピストンのシール部からの液漏れを確実に防止しようとするものである。   The present invention relates to a trigger type liquid ejector, and is intended to reliably prevent liquid leakage from a seal portion of a pump piston incorporated in the ejector.

トリガー式の液体噴出器はそのボディにシリンダー及びピストンからなるポンプが組み込まれていて、操作レバーの牽曳にてピストンをシリンダー内で往復移動させ容器内の液体を吸引、加圧することで噴射ノズルを通して液体を外界に噴出させることができるようになっている（例えば、特許文献１参照）。
特開平８−２６６９６４号公報 The trigger type liquid ejector has a built-in pump consisting of a cylinder and a piston in its body. The piston is reciprocated in the cylinder by the check of the operating lever, and the liquid in the container is sucked and pressurized to inject the nozzle. The liquid can be ejected to the outside through (for example, refer to Patent Document 1).
JP-A-8-266964

ところで、従来の液体噴出器に組み込まれるポンプは、シリンダーにおけるピストンのシールリップの内外の幅（接触範囲）が短いため、操作レバーの牽曳に際してピストンの軸心がシリンダーに軸心からずれた状態で往復移動することもあって（斜め引きされる）、この場合、ピストンの摺動部分におけるシール部（シールリップ）が不完全になることから作動漏れが発生する可能性が存在していた。   By the way, the pump incorporated in the conventional liquid ejector has a short inner and outer width (contact range) of the piston seal lip in the cylinder, so that the piston shaft is displaced from the shaft center when the operation lever is checked. In this case, the seal portion (seal lip) in the sliding portion of the piston becomes incomplete, and there is a possibility that an operation leakage may occur.

また、ポンプのシリンダーには普通、空気置換用のインテイクを通して外気を導入し容器内の空気を置換する開孔が設けられており、ピストンが静止状態にあるときはその内外のシールリップ間に該開孔が位置して液漏れを防止し、操作レバーの牽曳限界位置で該開孔が開放されて効率的な空気置換が行われるようになっているが、容器内の圧力が上昇し該開孔から液体が噴出してしまうような状態では液体が外側に位置するシールリップを押し窄めてしまうことから外に漏れ出てしまう不具合があり、これに対処すべく、ピストンのシール部の締め代を強化することも試みられてはいるものの、締め代の強化は摺動抵抗の増大を招くため操作レバーをスムーズに牽曳することができない不都合があること、また、ピストンを元の状態に復帰させるスプリングについても摺動抵抗が増加するため反発力の高いスプリングを選定する必要が生じ操作レバーの牽曳力が増大するのが避けられないこと、等のデメリットがあり未だ改善の余地が残されていた。   Also, the pump cylinder is usually provided with an opening through which air is introduced through the air replacement intake to replace the air in the container, and when the piston is stationary, the pump lip is placed between the inner and outer seal lips. An opening is located to prevent liquid leakage, and the opening is opened at the check lever limit position of the operating lever so that efficient air replacement is performed. In a state where liquid is ejected from the opening, there is a problem that the liquid leaks out because the seal lip located on the outside is squeezed. Although attempts have been made to reinforce the tightening allowance, the tightening allowance increases the sliding resistance, causing the inconvenience that the operating lever cannot be checked smoothly, and the piston is in its original state. Return to Since the sliding resistance also increases, it is necessary to select a spring with high repulsive force, and it is inevitable that the check force of the operating lever will increase, so there is still room for improvement. It was.

本発明の課題は、従来生じていた上述のような不具合を解決できる新規なトリガー式液体噴出器を提案するところにある。   The subject of this invention exists in the place which proposes the novel trigger type | mold liquid ejector which can solve the above malfunctions which have arisen conventionally.

本発明は、噴射ノズルを備えたボディと、インテイクの基部を内装しボディを容器の口部に固定保持するキャップと、前記ボディに枢支軸を介して揺動可能に支持された操作レバーと、前記インテイクを通して容器内の空気を置換する開孔を有するシリンダー及びこのシリンダー内にて往復移動するピストンからなるポンプとを備えたトリガー式液体噴出器であって、
前記ピストンに、シリンダーの壁面に沿って摺動する外側及び内側に位置する直列配置の２つのシールリップを設け、
前記２つのシールリップの相互間に、ピストンの往復移動のかかわりなしに開孔を位置せしめる空間領域を設け、
前記シリンダーに、操作レバーの牽曳限界位置においてのみ外側のシールリップとシリダーの内壁面との間に隙間を形成してシリンダー内に外気を導入する凹部を形成し、
前記外側及び内側のシールリップは、シリンダーの奥底へ向かう先端を有し、加圧された液体の圧力に応じて壁面での接触圧を高める傘状体からなることを特徴とするトリガー式液体噴出器である。 The present invention includes a body including an injection nozzle, a cap that includes an intake base, and that fixes and holds the body to the mouth of the container; an operation lever that is swingably supported by the body via a pivot shaft; A trigger type liquid ejector comprising a cylinder having an opening for replacing the air in the container through the intake and a pump comprising a piston reciprocating in the cylinder,
The piston is provided with two seal lips arranged in series on the outside and inside which slide along the wall surface of the cylinder,
A space region is provided between the two seal lips to position the aperture without reciprocal movement of the piston,
A recess is formed in the cylinder to introduce outside air into the cylinder by forming a gap between the outer seal lip and the inner wall surface of the cylinder only at the check limit position of the operating lever .
The outer and inner seal lips have a tip toward the bottom of the cylinder, and are made of an umbrella-like body that increases the contact pressure on the wall surface in accordance with the pressure of the pressurized liquid. It is a vessel.

上記の構成になるトリガー式液体噴出器において、シリンダーは水平に配置されたものとし、前記開口をシリンダーの下側に位置する壁面に、また、前記凹部をシリンダーの上側に位置する壁面にそれぞれ設けるのがよい。
In the trigger type liquid ejector configured as described above, the cylinder is horizontally arranged, and the opening is provided on the wall surface located on the lower side of the cylinder, and the concave portion is provided on the wall surface located on the upper side of the cylinder. It is good.

ピストンに２つのシールリップを直列に配置し、その相互間にピストンの往復移動にかかわりなしに開孔を位置せしめる比較的長い空間領域を設ける（シール部の幅が長い）ことで、ピストンの傾き（ピストンの軸心とシリンダーの軸心のずれ）をなくすことができ、これにより作動漏れが生じることはない。加えて、スプリングの反発力も下げることができ液体噴射時の操作レバーの牽曳力を小さく（軽く）することも可能となる。   By placing two seal lips in series on the piston and providing a relatively long space area (the width of the seal part is long) to position the opening without any reciprocal movement of the piston between them, the inclination of the piston It is possible to eliminate (displacement between the axial center of the piston and the axial center of the cylinder), so that no operation leakage occurs. In addition, the repulsive force of the spring can be reduced, and the check force of the operation lever at the time of liquid injection can be reduced (lightened).

シールリップを傘状に成形し内圧が高まったときに傘が開いてシリンダーの内壁における接触圧が上昇するようにしておくと、たとえ内側のシールリップがシール不良を起こすことがあっても外側のシールリップによりシール状態が保たれるため作動漏れを起こすことはなく、また、容器内の圧力が上昇してシリンダーの開孔から液体が噴出しても液が漏れ出すことはない。   If the seal lip is shaped like an umbrella and the internal pressure rises so that the umbrella opens and the contact pressure on the inner wall of the cylinder rises, even if the inner seal lip may cause a poor seal, Since the sealing state is maintained by the seal lip, no operation leakage occurs, and no liquid leaks even if the pressure in the container rises and liquid is ejected from the opening of the cylinder.

２つのシールリップのうちの外側のシールリップとシリンダーの内壁面との間にトリガーの牽曳限界位置で外気が導入できる隙間を形成することで容器内の空気は効率よく置換される。   By forming a gap between the outer seal lip of the two seal lips and the inner wall surface of the cylinder so that outside air can be introduced at the check limit position of the trigger, the air in the container is efficiently replaced.

以下、図面を用いて本発明をより具体的に説明する。
図１は本発明にしたがうトリガー式液体噴出器の実施の形態を示したものであり、図２はその要部を拡大して示した図である（図２中ピストンの軸心を境にして上側が操作レバーを牽曳した状態を示したものであり、下側が操作レバーがもとの状態に復帰した状態を示したもの）。 Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 shows an embodiment of a trigger type liquid ejector according to the present invention, and FIG. 2 is an enlarged view of a main part thereof (with the axis of the piston in FIG. 2 as a boundary). The upper side shows the state where the operating lever is depressed, and the lower side shows the state where the operating lever has returned to the original state).

図における１は噴射ノズル、２は内部通路を有し噴射ノズル１を保持するボディ、３はボディ２を容器の口部に固定保持するキャップであり、このキャップ３にはインテイク３ａの基部が内装されている。   In the figure, 1 is an injection nozzle, 2 is a body having an internal passage and holding the injection nozzle 1, and 3 is a cap for fixing and holding the body 2 at the mouth of the container. Has been.

また、４はボディ２に枢支軸Ｓを介して揺動可能に支持された操作レバー、５はボディ２に一体的に設けられた水平配置になるシリンダー、６はシリンダー５の下側の壁面に設けられインテイク３ａの連通孔につながる開孔、７はシリンダー５に配置されるピストンであって、このピストン７とシリンダー５によって液体の吸引、加圧を行うためのポンプを構成する。   Reference numeral 4 denotes an operation lever supported by the body 2 through a pivot shaft S so as to be swingable. Reference numeral 5 denotes a horizontal cylinder integrally provided with the body 2. Reference numeral 6 denotes a lower wall surface of the cylinder 5. The opening 7 connected to the communication hole of the intake 3a is a piston disposed in the cylinder 5. The piston 7 and the cylinder 5 constitute a pump for sucking and pressurizing liquid.

８ａ、８ｂはシリンダー５の壁面に沿って摺動する外側及び内側に位置する直列配置（ピストン７の軸心Ｌに沿って配置される）になるシールリップであり、このシールリップ８ａ、８ｂはその断面形状がシリンダー５の奥底に向かう先端を有する傘状体からなっておりその相互間にはピストン７の往復移動にかかわりなしに開孔６を位置せしめる空間領域Ｋが設けられている。   8a and 8b are seal lips that are arranged in series (positioned along the axis L of the piston 7) located on the outside and inside that slide along the wall surface of the cylinder 5, and the seal lips 8a and 8b are The cross-sectional shape is an umbrella-like body having a tip toward the bottom of the cylinder 5, and a space region K in which the opening 6 is positioned without reciprocal movement of the piston 7 is provided therebetween.

さらに、９はシリンダーの上側の壁面に設けられた凹部である。この凹部９は操作レバー４の牽曳限界位置（ピストン７の先端がシリンダー５の奥底に当たる位置を意味するもので図２の上側参照）において外側のシールリップ８ａとの間で隙間を形成して外気を導入するものであり、ここから導入された空気は開孔６及びインテイク３ａを通して容器内に入り込み該容器内の空気を置換して容器内が負圧になるのを防止して液体を効率的に噴出させる。   Further, 9 is a recess provided on the upper wall surface of the cylinder. This recess 9 forms a gap with the outer seal lip 8a at the check limit position of the operating lever 4 (meaning the position where the tip of the piston 7 hits the bottom of the cylinder 5; see the upper side of FIG. 2). The outside air is introduced, and the air introduced from this enters the container through the opening 6 and the intake 3a, and replaces the air in the container to prevent the inside of the container from becoming negative pressure. Erupt.

図３は従来形式になるトリガー式液体噴出器の断面を示したものである。図示したような従来の噴出器に組み込まれるピストン１０はシール部における寸法ｍが短いため操作レバー１１の牽曳に際してピストン１０の軸心がシリンダー１２の軸心からずれた状態で往復移動することもあり、この場合、シール部からの液体の漏れ（作動漏れ）は避けられないことになるが、本発明にしたがう液体噴出器は、直列配置になる２つのシールリップ８ａ、８ｂを設け、その相互間に従来に比べてより長い空間領域Ｋを存在させてあるので、操作レバー４を牽曳した際に安定した牽曳が可能となり、ピストン７が傾いて往復移動することがなく、したがって作動漏れが生じることがない。   FIG. 3 shows a cross section of a conventional trigger type liquid ejector. Since the piston 10 incorporated in the conventional ejector as shown in the figure has a short dimension m at the seal portion, when the operating lever 11 is checked, the piston 10 may reciprocate with the axis of the piston 10 deviating from the axis of the cylinder 12. In this case, liquid leakage (operation leakage) from the seal portion is unavoidable. However, the liquid ejector according to the present invention is provided with two seal lips 8a and 8b arranged in series, and the mutual Since a longer space region K is present between them than in the prior art, a stable check can be made when the operating lever 4 is checked, and the piston 7 does not tilt and reciprocate, thus causing an operating leakage. Will not occur.

また、シールリップ８ａ、８ｂを空間領域Ｋを隔てて２つ直列に配置した場合、例えば内側のシールリップ８ｂがシール不良となっても外側のシールリップ８ａによりシール状態が保たれることになる。   Further, when two seal lips 8a and 8b are arranged in series with the space region K therebetween, for example, even if the inner seal lip 8b becomes defective in sealing, the sealed state is maintained by the outer seal lip 8a. .

さらにシールリップ８ａ、８ｂは内圧が高まったときに傘状体が開いてシリンダー７の内壁に対する接触面圧が上昇して液漏れを回避する。   Further, when the internal pressure increases, the seal lips 8a and 8b open the umbrella-like body, and the contact surface pressure against the inner wall of the cylinder 7 increases to avoid liquid leakage.

操作レバーの牽曳に際してピストンが斜め引きされて作動漏れを起こすことがなく、容器内の内圧が上昇して空気の置換を行う開孔から液体が噴出しても該液体が外に漏れでることがないトリガー式の液体噴出器を提供できる。   When the operating lever is checked, the piston is not pulled diagonally and does not leak, and even if the internal pressure rises and the liquid is ejected from the opening for air replacement, the liquid leaks outside. It is possible to provide a trigger type liquid ejector that does not have any

本発明にしたがう液体噴出器の実施の形態を示した図である。It is the figure which showed embodiment of the liquid ejector according to this invention. 図１に示した液体噴出器の要部拡大図である。It is a principal part enlarged view of the liquid ejector shown in FIG. 従来形式になる液体噴出器の構成を示した図である。It is the figure which showed the structure of the liquid ejector which becomes a conventional format.

符号の説明Explanation of symbols

１ 噴射ノズル
２ ボディ
３ キャップ
３ａ インテイク
４ 操作レバー
５ シリンダー
６ 開孔
７ ピストン
８ａ 外側のシールリップ
８ｂ 内側のシールリップ
９ 凹部
１０ ピストン
１１ 操作レバー
１２ シリンダー DESCRIPTION OF SYMBOLS 1 Injection nozzle 2 Body 3 Cap 3a Intake 4 Operation lever 5 Cylinder 6 Opening hole 7 Piston 8a Outer seal lip 8b Inner seal lip 9 Recess 10 Piston 11 Operation lever 12 Cylinder

Claims (2)

噴射ノズルを備えたボディと、インテイクの基部を内装しボディを容器の口部に固定保持するキャップと、前記ボディに枢支軸を介して揺動可能に支持された操作レバーと、前記インテイクを通して容器内の空気を置換する開孔を有するシリンダー及びこのシリンダー内にて往復移動するピストンからなるポンプとを備えたトリガー式液体噴出器であって、
前記ピストンに、シリンダーの壁面に沿って摺動する外側及び内側に位置する直列配置の２つのシールリップを設け、
前記２つのシールリップの相互間に、ピストンの往復移動のかかわりなしに開孔を位置せしめる空間領域を設け、
前記シリンダーに、操作レバーの牽曳限界位置においてのみ外側のシールリップとシリンダーの内壁面との間に隙間を形成してシリンダー内に外気を導入する凹部を形成し、
前記外側及び内側のシールリップは、シリンダーの奥底へ向かう先端を有し、加圧された液体の圧力に応じて壁面での接触圧を高める傘状体からなることを特徴とするトリガー式液体噴出器。 A body provided with an injection nozzle, a cap with a built-in intake base, the body being fixedly held at the mouth of the container, an operating lever supported by the body via a pivot shaft, and an intake lever. A trigger type liquid ejector comprising a cylinder having an opening for replacing air in a container and a pump comprising a piston reciprocating in the cylinder,
The piston is provided with two seal lips arranged in series on the outside and inside which slide along the wall surface of the cylinder,
A space region is provided between the two seal lips to position the aperture without reciprocal movement of the piston,
A recess is formed in the cylinder to introduce outside air into the cylinder by forming a gap between the outer seal lip and the inner wall surface of the cylinder only at the check limit position of the operation lever .
The outer and inner seal lips have a tip toward the bottom of the cylinder, and are made of an umbrella-like body that increases the contact pressure on the wall surface in accordance with the pressure of the pressurized liquid. vessel. 前記シリンダーは水平に配置されたもので、前記開口はシリンダーの下側に位置する壁面に、また、前記凹部はシリンダーの上側に位置する壁面にそれぞれ設けられたものである、請求項１記載のトリガー式液体噴出器。The said cylinder is arrange | positioned horizontally, The said opening is provided in the wall surface located in the lower side of a cylinder, and the said recessed part is provided in the wall surface located in the upper side of a cylinder, respectively. Trigger type liquid ejector.
JP2004022725A 2004-01-30 2004-01-30 Trigger type liquid ejector Expired - Lifetime JP4440659B2 (en)

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JP6404100B2 (en) * 2014-11-28 2018-10-10 株式会社吉野工業所 Trigger type liquid ejector
JP6064066B2 (en) * 2015-05-07 2017-01-18 ライオン株式会社 Ejector
JP6752529B2 (en) * 2016-12-28 2020-09-09 株式会社吉野工業所 Trigger type liquid ejector
JP6701413B1 (en) * 2019-05-23 2020-05-27 古沢　正弘 Trigger sprayer
CN113546781B (en) * 2021-07-14 2022-12-23 中山市联昌喷雾泵有限公司 One-way valve and air supply cooperative spray gun

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