JP4137443B2

JP4137443B2 - Liquid jet pump

Info

Publication number: JP4137443B2
Application number: JP2001399860A
Authority: JP
Inventors: 孝之後藤
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2001-12-28
Filing date: 2001-12-28
Publication date: 2008-08-20
Anticipated expiration: 2021-12-28
Also published as: JP2003191995A

Description

【０００１】
【発明の属する技術分野】
本発明は液体噴出ポンプに関する。
【０００２】
【従来の技術】
液体噴出ポンプとして、シリンダの上端より上方付勢状態で押下げ可能に突出したステムの上端に噴出ヘッドを嵌着してなる作動部材を有し、作動部材の上下動により、内蔵ポンプ機構の作用で、装着した容器体内の収納液を噴出ヘッドの噴出口より噴出する如く構成したものが知られている。
【０００３】
これらは保管，運搬時の外力による作動部材の押下げを防止し、液の不用意な注出を防止する等の目的で、シリンダ上端に嵌着したリング部材に、作動部材を押し下げた状態で螺着係止可能に構成しているものが一般的である。例えば、リング部材外周に周設した螺条に噴出ヘッドの周壁内周に周設した螺条を螺合させることにより螺着係止させている。
【０００４】
また、これらのポンプ於ける作動部材の螺着係止は、例えば、その上面を回動しつつ押し下げるキャッパーにより行う。キャッパーは予め締め付けトルクを設定しておき、所定の値に達した時点で締め付けを中止する如く構成しており、例えば、リング部材の螺条下方に突設したフランジ上面に噴出ヘッド周壁下面が当接した時点で締め付けを中止し、螺着の終点としている。一方、開トルクはこのキャッパーの締めトルクの管理によって調整を図っている。
【０００５】
【発明が解決しようとする課題】
これら作動部材の螺着係止はそれが緩い締め付けであれば保管，運搬等の際に外れる虞が生じ、一方、締め付けが強すぎると使用時に螺脱が困難となる。従って、不使用時には外れる虞がなく、使用時には比較的容易に螺脱できる様な適正なトルク調整が好ましいが、従来ポンプに於いて、上記した機械的調整では開けトルクのバラツキが大きく、常時適正な開けトルクを付与するのが難しい。
【０００６】
即ち、締めトルクの管理はそれほど精度を高く行えないことや、緩みを防止する目的で管理を大きく設定する傾向があることなどから、噴出ヘッド周壁下面がリング部材のフランジ上面に当接する螺着終点の際に、即座に締め付けを中止することが難しく必要以上に圧接され、また、両者間の当接面積も広く両者間の摩擦力がより大きくなり、開けトルクが予定のものよりはるかに大きくなる虞があり、バラツキが生じ易い。
【０００７】
本発明は上記した点に鑑みてなされたもので、開けトルクのバラツキを極めて少なくすることが可能となり、不使用時には外力により作動部材が外れるのを防止し、使用時には容易に作動部材を螺脱することができるという作用的安定性を得られ、しかも、構造は従来品と比較しても複雑化せずに形成でき、組み立てラインでの特別なトルク管理が不要となり、その結果、生産性の向上をもたらす優れた液体噴出ポンプを提案するものである。
【０００８】
【課題を解決するための手段】
第１の手段として、以下の通り構成した即ち、上端部にリング部材３を嵌着したシリンダ４と、シリンダ４上端開口から上方付勢状態で突出したステム５の上端に噴出ヘッド６を嵌着した作動部材Ａとを備え、作動部材Ａの上下動により装着した容器体内の液を吸上げて噴出ヘッド６の噴出口ａより噴出する如く構成するとともに、作動部材Ａの押し下げ状態でリング部材３に螺着係止可能に構成した液体噴出ポンプに於いて、上記噴出ヘッド６が、上記ステム５上端に嵌着した縦筒 24 を頂板 25 裏面より垂設するとともに、頂板 25 周縁部より周壁 26 を垂設し、且つ、縦筒 24 に基端を開口したノズル筒 27 の先端噴出口ａを外方へ突出した噴出ヘッドであり、上記リング部材３に起立形成した係止面 13 と、上記噴出ヘッド６に設け且つ噴出ヘッド６の螺動下降時の所定螺着レベルに於いて上記係止面 13 に当接係止される係合突部 14 とからなるトルク調整部 12 を設け、上記係止面 13 が、リング部材３上面内周縁部に起立した短筒部 35 の内周に凹設した円弧状凹部 23 を形成する一端面であり、上記係合突部 14 が、噴出ヘッド縦筒 24 外面に突設し、噴出ヘッド６の回動に伴い上記円弧状凹部 23 を移動可能な係合突部であることを特徴とする。
【００１１】
第２の手段として、以下の通り構成した。即ち、前記第１の手段に於いて、上記係止面13と上記係合突部14とが当接する直前の螺着レベルに於いて、上記円弧状凹部23を形成する周面に、上記係合突部14が乗り越える緩み防止用突部16を設けた。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
【００１３】
図面に示す如く、本発明の液体噴出ポンプ１は、容器体２等に装着して使用するもので、上端部にリング部材３を嵌着したシリンダ４と、シリンダ上端開口から上方付勢状態で突出したステム５の上端に噴出ヘッド６を嵌着した作動部材Ａとを備え、作動部材の上下動により装着した容器体内の液を吸い上げて噴出ヘッド６の噴出口ａより噴出する如く構成するとともに、作動部材Ａの押下げ状態でリング部材３に螺着係止可能に構成したものである。
【００１４】
ポンプ１の容器体２への装着方法としては、口頸部外周に嵌合させた装着筒により容器体に装着固定するという従来のこの種のポンプの装着方法が採用でき、図示例では、シリンダ４の外周上部より突設したフランジ７と、シリンダ上端に嵌着したリング部材３との間に、装着筒８上端より延設したフランジ状頂板９を回動可能に挟持させ、上記フランジ７をパッキン10を介して口頸部11上に載置した状態で、装着筒８を容器体２の口頸部11外周に螺着させて着脱可能に容器体２に装着している。
【００１５】
リング部材３は、保管，運搬等の不使用時に作動部材Ａの押し下げを防止して不用意な液の漏出等を防止するために、押し下げた作動部材Ａを螺着係止するものである。作動部材Ａとの螺着部分は噴出ヘッドの形態に併せて種々採用でき、例えば、図１の実施例の如く、外周面を螺着部分としたり、或いは図６の実施例の如く内周面を螺着部分としたり、或いは図示しないが、上面より突設した筒部周面を螺筒部分とすることができ、対応する噴出ヘッドの螺筒部分と螺着させる如く構成すると良い。
【００１６】
噴出ヘッド６は、ステム５上端に嵌着させたもので、ステム５内と連通する噴出口ａを備え、ステム５内からの液を噴出口ａより噴出する如く構成するとともに、その上面を押圧することにより作動部材Ａを上方付勢力に抗して押し下げるためのものである。また、押し下げ状態でリング部材３に螺着係止可能に構成しており、上記したリング部材の螺着部分と対応する部分にそれぞれ螺着部分を形成している。
【００１７】
本発明では、上記の如く構成した液体噴出ポンプに於いて、トルク調整部12を設けている。トルク調整部12は、上記リング部材３に起立形成した係止面13と、上記噴出ヘッド６に設けた係合突部14とを備え、且つ、噴出ヘッドの螺動下降時の所定螺着レベルに於いて、係合突部14が係止面13に当接係止される如く構成しており、その時点で所定開トルクを得られる如く構成している。
【００１８】
この場合の所定螺着レベルとは、上記した如く、所定開トルクが得られる螺着レベルであり、所定開トルクは、運搬，保管等に係る通常の外力、例えば、振動等により螺脱する虞がなく、一方、手により噴出ヘッド６を回動させて螺脱させる場合には比較的容易に行える程度のトルクを言う。開トルクは、螺着部分の螺条相互の摩擦力等を主要因として、ピストンとシリンダ間等のその他の螺脱に関与する摩擦力によりその大きさを左右されるため、こらを考慮して設定される。尚、上記所定螺脱レベルは特定の値ではなく、幅を持った値を考慮している。
【００１９】
このトルク調整部12を設けることにより、締め付けトルクの大きさに拘わらず係止面13に係合突部14が当接した時点でそれ以上の作動部材Ａの回動を防止でき、その結果、従来のヘッド周壁下面とフランジ上面との間の広い面積に於ける摩擦力が開トルクに関与せず、開トルクを好ましい状態で常時管理でき、締めすぎて使用時に外れなかったり、緩すぎて不使用時に作動部材Ａが螺脱上昇してしまう等の不都合を防止できる如く構成している。
【００２０】
また、本発明では、上記係止面13と上記係合突部14とが当接する直前の螺着レベルに於いて、上記噴出ヘッド６に設けた乗越突部15が乗り越える緩み防止用突部16を、上記リング部材３に設けるとより好ましいトルク管理を行うことができる。
【００２１】
この様な乗越突部15及び緩み防止用突部16を設けることにより、乗越突部と緩み防止用突部間の摩擦力等が作動部材Ａの開トルクに大きく関与するため、それらの形状，突出幅等の要素を適宜選択することにより締め付けトルクの如何に拘わらず開トルクを常時安定的に管理できる如く構成している。
【００２２】
乗越突部15及び緩み防止用突部16の形態は上記要件を満たせば種々の形態を採用でき、例えば、リング部材上面に突設した筒部及び噴出ヘッドに垂設した筒部にそれぞれ突設した突条形態のもの、或いは突起形態のものなどが挙げられるが、図示例の如く、上記係合突部14を乗越突部15と兼用させると、構造上の煩雑さを解消でき、より好ましい。
【００２３】
以下、更に具体的に説明する。図１の実施例に於いてリング部材３は、シリンダ４の上端外周に突条相互の乗越係合により上方への抜け出しを防止して嵌合した嵌合筒17を、ドーナツ板状の頂板18裏面より垂設するとともに、頂板18外周縁部より下方へ周壁19を垂設し、その外周に螺条20を周設している。また、頂板18裏面内方よりシリンダ４内面に嵌合させた内嵌合筒21を垂設するとともに、頂板18の内周縁部より下方へ、ステム５を挿通する案内筒22を垂設して構成している。
【００２４】
また、上面外周縁部に、底面が順次下降する平面視円弧状をなす凹部23を形成し、該凹部を形成する一端面を係止面13として構成しており、係止面13の直前の凹部23を形成する周面には上記緩み防止用突部16を突設している。これら凹部23、係止面13、緩み防止用突部16は、対称位置に一対形成している。
【００２５】
噴出ヘッド６は、上記ステム５上端に嵌着した縦筒24を頂板25裏面より垂設するとともに、頂板25周縁部より周壁26を垂設し、更に、縦筒24に基端を開口したノズル筒27の先端噴出口ａを外方へ突出して構成している。また、周壁26の内周下部には螺条28を周設し、作動部材Ａを押し下げた状態で、図４に示す如く、リング部材３の螺条20と螺合する如く構成している。また、周壁26の内面上部と縦筒24の外面上部との間に掛け渡した補強板29の下面外縁部より下方へ、板状の係合突部14を突設し、所定螺着レベルに於いて、係止面13に当接係止する如く構成している。この係合突部14も対称位置に一対設けている。
【００２６】
また、ステム５の外周下端部に筒状ピストン30を連係させ、ステム５下面には作動部材Ａを上方付勢させるためのコイルスプリング31を介在させている。更に、シリンダ４下端部には図示しない吸込弁を、ステム５内上部には吐出弁32をそれぞれ設けている。尚、これらポンプの内部構造は当然これに限られるものではなく、従来のこの種ポンプの構成を採用できる。
【００２７】
上記の如く構成した液体噴出ポンプに液を充填する際には、容器体２内に液を充填した後、上記した如く液体噴出ポンプ１を装着し、噴出ヘッド６をリング部材３に螺着させる。例えば図５に示す如く、キャッパー33により作動部材Ａを回動させつつ押し下げ、リング部材３の螺条20に噴出ヘッド６の螺条28を螺着させる。螺着が進み係合突部14が緩み防止用突部16を乗り越え、係止面13に当接係止された時点で所定の螺着レベルに到達し、それ以上の作動部材Ａの回動は生じることがなく、予め設定されていた数値に達するとキャッパー33の押圧板34が空回りし、所定時間経過後上昇してライン上のポンプが移動する。尚、この際噴出ヘッドの周壁下面が対向面に当接しない様構成しておくと良い。
【００２８】
また、液体噴出ポンプ１を使用する際には、例えば、図１の状態から作動部材Ａを押し下げることによりシリンダ４内の加圧液が吐出弁32を開き噴出口ａより噴出され、また、押し下げた作動部材Ａが上昇する際には吸込弁が開いて容器体２内の液をシリンダ内へ吸引する。
【００２９】
図６は本発明の他の実施例を示し、本実施例では、螺着部分がリング部材３の内周面部分に設けた例を示しており、また、係止面13及び緩み防止用突部16を形成する上記凹部23がリング部材３の内周縁部分に形成された例を示す。
【００３０】
本実施例に於いて、リング部材３は、シリンダ４の上端外周に突条相互の乗越係合により上方への抜け出しを防止して嵌合した嵌合筒17を、ドーナツ板状の頂板18裏面より垂設するとともに、頂板18外周縁部より下方へ周壁19を垂設し、また、頂板18裏面内周縁部よりシリンダ４内面に嵌合させるとともに、ステム５を挿通する案内筒22を垂設して構成しており、この案内筒22上部に螺条20を形成している。
【００３１】
また、上面内周縁部に起立した短筒部35の内周に、底面が順次下降する平面視円弧状をなす凹部23を形成し、該凹部を形成する一端面を係止面13として構成しており、係止面13の直前の凹部23を形成する周面には上記緩み防止用突部16を突設している。これら凹部23、係止面13、緩み防止用突部16は、対称位置に一対形成している。
【００３２】
噴出ヘッド６は、基本的構成は上記記実施例と同様であるが、本実施例では作動部材Ａの外周上部である縦筒24の下部外周に螺条28を周設し、図８に示す如く、作動部材Ａを押し下げた状態でリング部材３の螺条20と螺合する如く構成している。また、螺条28上方の縦筒24外面に乗越突部15を兼ねる板状の上記係合突部14を突設し、所定螺着レベルに於いて、係止面13に当接係止される如く構成している。本実施例の場合も作動部材Ａの螺着時の作用は上記実施例と同様であるため省略する。
【００３３】
尚、上記各部材の材質は特に限定しないが、主として合成樹脂を使用し、必要に応じて金属，エラストマー等を併用して製造することができる。
【００３４】
【発明の効果】
以上説明した如く、本発明の液体噴出ポンプは、既述構成としたことにより、締めトルクの管理によって調整される開けトルクのバラツキを少なくすることが可能となり、不使用時には外力により作動部材が外れるのを防止し、使用時には容易に作動部材を螺脱することができるという作用的安定性を得られ、しかも、構造は従来品と比較しても複雑化せずに形成でき、組み立てラインでの特別なトルク管理が不要となり、その結果、生産性の向上をもたらすものである。
【００３５】
また、第２の手段の液体噴出ポンプは、乗越突部と緩み防止用突部間の摩擦力等が作動部材Ａの開トルクに大きく関与するため、それらの形状，突出幅等の要素を適宜選択することにより締め付けトルクの如何に拘わらず開トルクを常時安定的に管理できる。
【図面の簡単な説明】
【図１】本発明の一実施例を示す一部切欠側面図である。
【図２】同実施例のリング部材を示す斜視図である。
【図３】同実施例のリング部材を示す平面図である。
【図４】同実施例の作動部材を押下げ係止した状態の一部切欠側面図である。
【図５】同実施例の作用を説明する説明図である。
【図６】本発明の他の実施例を示す一部切欠側面図である。
【図７】同実施例のリング部材を示す斜視図である。
【図８】同実施例の作動部材を押下げ係止した状態の一部切欠側面図である。
【符号の説明】
３…リング部材、４…シリンダ、５…ステム、６…噴出ヘッド、
12…トルク調整部、13…係止面、14…係合突部、15…乗越突部、
16…緩み防止用突部、18…リング部材頂板、19…リング部材周壁、
23…円弧状凹部、26…噴出ヘッド周壁、24…縦筒、27…ノズル筒、
Ａ…作動部材、ａ…噴出口、[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid jet pump.
[0002]
[Prior art]
As a liquid jet pump, it has an operating member formed by fitting the jet head to the upper end of a stem that protrudes so as to be pushed down from the upper end of the cylinder so that it can be pushed down. Thus, it is known that the liquid contained in the mounted container is ejected from the ejection port of the ejection head.
[0003]
These are the states in which the operating member is pushed down on the ring member fitted to the upper end of the cylinder for the purpose of preventing the pressing of the operating member due to external force during storage and transportation, and preventing inadvertent liquid dispensing. Generally, it is configured to be able to be screwed and locked. For example, the thread provided on the outer periphery of the ring member is screwed and locked by screwing the thread provided on the inner periphery of the peripheral wall of the ejection head.
[0004]
Further, the operation member in these pumps is screwed and locked by, for example, a capper that pushes down the upper surface while rotating. The capper has a tightening torque set in advance and is configured to stop tightening when a predetermined value is reached. For example, the lower surface of the jet head peripheral wall is applied to the upper surface of the flange projecting below the thread of the ring member. At the point of contact, the tightening is stopped and the end of screwing is set. On the other hand, the opening torque is adjusted by managing the tightening torque of the capper.
[0005]
[Problems to be solved by the invention]
If these operating members are screwed and locked loosely, there is a risk that they will come off during storage, transportation, etc. On the other hand, if the tightening is too strong, screwing becomes difficult during use. Therefore, it is preferable to adjust the torque appropriately so that it does not come off when not in use and can be screwed out relatively easily when used. However, in conventional pumps, the above-mentioned mechanical adjustment has a large variation in opening torque and is always appropriate. It is difficult to give a large opening torque.
[0006]
That is, the tightening torque cannot be controlled so accurately, and there is a tendency to set the control large for the purpose of preventing loosening. Therefore, the screwing end point where the lower surface of the jet head peripheral wall comes into contact with the upper surface of the flange of the ring member In this case, it is difficult to stop tightening immediately, it is pressed more than necessary, the contact area between them is large, the frictional force between them is larger, and the opening torque is much larger than planned There is a risk, and variations are likely to occur.
[0007]
The present invention has been made in view of the above points, and it is possible to greatly reduce the variation in opening torque, prevent the actuating member from being detached by an external force when not in use, and easily disengage the actuating member during use. In addition, the structure can be formed without complication even when compared with conventional products, and no special torque management in the assembly line is required. The present invention proposes an excellent liquid jet pump that brings about improvement.
[0008]
[Means for Solving the Problems]
The first means is configured as follows: a cylinder 4 having a ring member 3 fitted to the upper end thereof, and a jet head 6 fitted to the upper end of a stem 5 projecting upward from the cylinder 4 upper end opening. The operating member A is configured to suck up the liquid in the container body mounted by the vertical movement of the operating member A and eject the liquid from the ejection port a of the ejection head 6, and the ring member 3 while the operating member A is pushed down. in Nishigigakaritome configured to be capable of liquid jet pump, the jet head 6, the stem longitudinal tube 24 while vertically from top plate 25 back surface which is fitted to the 5 upper peripheral wall 26 than the top plate 25 periphery , And an ejection head projecting outwardly from the distal end ejection port a of the nozzle cylinder 27 whose base end is opened to the vertical cylinder 24 , and the locking surface 13 formed upright on the ring member 3 ; Provided in the ejection head 6 and of the ejection head 6 In certain screwing level during moving downward is provided a torque adjusting section 12 composed of engaging projections 14 that are locked abutting engagement with the engaging surface 13, the engagement surface 13, the ring member 3 in the upper surface It is an end surface that forms an arc-shaped recess 23 that is recessed in the inner periphery of the short cylinder portion 35 that stands up at the peripheral edge , and the engagement projection 14 projects from the outer surface of the ejection head vertical cylinder 24 , and the ejection head 6. wherein the of a engagement projection that is movable said arcuate recess 23 with the rotation.
[0011]
The second means is configured as follows. That is, in the first means, the engagement surface 13 is formed on the peripheral surface forming the arcuate recess 23 at the screwing level immediately before the engagement surface 13 and the engagement protrusion 14 abut. A loosening prevention protrusion 16 over which the mating protrusion 14 gets over is provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
As shown in the drawings, the liquid jet pump 1 according to the present invention is used by being mounted on a container body 2 or the like, and a cylinder 4 having a ring member 3 fitted to the upper end thereof and an upward biased state from the cylinder upper end opening. And an operating member A fitted with a jet head 6 at the upper end of the protruding stem 5, and is configured to suck up the liquid in the mounted container body by the vertical movement of the operating member and eject it from the jet outlet a of the jet head 6. The operation member A is configured to be able to be screwed and locked to the ring member 3 in a pressed state.
[0014]
As a mounting method of the pump 1 to the container body 2, a conventional pump mounting method of this type in which the pump body 1 is mounted and fixed to the container body by a mounting cylinder fitted to the outer periphery of the mouth and neck can be employed. A flange-like top plate 9 extending from the upper end of the mounting cylinder 8 is rotatably held between the flange 7 projecting from the upper outer periphery of the ring 4 and the ring member 3 fitted to the upper end of the cylinder. The mounting cylinder 8 is screwed onto the outer periphery of the mouth / neck portion 11 of the container body 2 and is detachably mounted on the container body 2 while being placed on the mouth / neck section 11 via the packing 10.
[0015]
The ring member 3 is used for screwing and locking the depressed operating member A in order to prevent the actuating member A from being pushed down when not in use, such as storage and transportation, and to prevent inadvertent leakage of liquid. Various screwed portions with the actuating member A can be employed in accordance with the form of the ejection head. For example, the outer peripheral surface can be a screwed portion as in the embodiment of FIG. 1, or the inner peripheral surface as in the embodiment of FIG. Although not shown, the peripheral surface of the cylindrical portion protruding from the upper surface can be used as the screw tube portion, and the screw portion may be screwed to the screw tube portion of the corresponding ejection head.
[0016]
The ejection head 6 is fitted to the upper end of the stem 5 and includes an ejection port a communicating with the inside of the stem 5. The ejection head 6 is configured to eject liquid from the stem 5 from the ejection port a and presses the upper surface thereof. By doing so, the actuating member A is pushed down against the upward biasing force. Further, the ring member 3 is configured so as to be able to be screwed and locked in the depressed state, and screwed portions are respectively formed in portions corresponding to the screwed portions of the ring member.
[0017]
In the present invention, the torque adjusting unit 12 is provided in the liquid jet pump configured as described above. The torque adjustment unit 12 includes a locking surface 13 formed upright on the ring member 3 and an engagement protrusion 14 provided on the ejection head 6 , and a predetermined screwing level when the ejection head is lowered. In this case, the engaging projection 14 is configured to be brought into contact with and locked to the locking surface 13, and is configured to obtain a predetermined opening torque at that time.
[0018]
The predetermined screwing level in this case is a screwing level at which a predetermined opening torque is obtained as described above, and the predetermined opening torque may be screwed off by a normal external force related to transportation, storage, etc., for example, vibration. On the other hand, when the ejection head 6 is rotated by hand and screwed, it means a torque that can be relatively easily performed. The opening torque depends on the frictional force involved in other screwing between the piston and the cylinder, etc., mainly due to the frictional force between the threads at the screwed part. Is set. Note that the predetermined threading level is not a specific value but a value having a width.
[0019]
By providing this torque adjusting portion 12, it is possible to prevent further rotation of the actuating member A when the engaging projection 14 abuts against the locking surface 13 regardless of the magnitude of the tightening torque. The frictional force in a wide area between the lower surface of the conventional peripheral wall of the head and the upper surface of the flange does not contribute to the opening torque, and the opening torque can be managed at all times in a desirable state. The operating member A is configured to prevent inconveniences such as the operating member A being screwed up during use.
[0020]
Further, in the present invention, at the screwing level immediately before the locking surface 13 and the engaging protrusion 14 come into contact with each other, the loosening preventing protrusion 16 that the overpass protrusion 15 provided on the ejection head 6 gets over. and it can be performed more preferable torque management when provided in the ring member (3).
[0021]
By providing such an overpass projection 15 and a loosening prevention projection 16, the frictional force between the overpass projection and the loosening prevention projection is greatly involved in the opening torque of the actuating member A. By appropriately selecting factors such as the protrusion width, the opening torque can be managed constantly and stably regardless of the tightening torque.
[0022]
Form of Norikoshi projection 15 and loosening prevention protrusion 16 can take various forms satisfies the above requirements, for example, each collision in a cylindrical portion which is vertically in the cylindrical portion及 beauty injection head projecting from the ring member upper surface Although it is possible to use a projecting ridge shape, or a projection shape, etc., as shown in the illustration, if the engagement projection 14 is also used as the overpass projection 15, the structural complexity can be eliminated, and more preferable.
[0023]
More specific description will be given below. In the embodiment shown in FIG. 1, the ring member 3 includes a fitting tube 17 fitted to the outer periphery of the upper end of the cylinder 4 by preventing over-extension by mutual engagement between protrusions, and a top plate 18 having a donut plate shape. In addition to being suspended from the back surface, a peripheral wall 19 is suspended downward from the outer peripheral edge of the top plate 18, and a screw thread 20 is circumferentially provided on the outer periphery thereof. Further, an inner fitting cylinder 21 fitted to the inner surface of the cylinder 4 is suspended from the inner side of the back surface of the top plate 18, and a guide cylinder 22 that passes through the stem 5 is suspended downward from the inner peripheral edge of the top plate 18. It is composed.
[0024]
Further, a concave portion 23 having a circular arc shape in plan view in which the bottom surface sequentially descends is formed on the outer peripheral edge of the upper surface, and one end surface that forms the concave portion is configured as a locking surface 13, and immediately before the locking surface 13 The loosening-preventing protrusion 16 is provided on the peripheral surface forming the recess 23. A pair of the recess 23, the locking surface 13, and the loosening prevention protrusion 16 are formed at symmetrical positions.
[0025]
The ejection head 6 has a vertical cylinder 24 fitted to the upper end of the stem 5 suspended from the back surface of the top plate 25, a peripheral wall 26 suspended from the periphery of the top plate 25, and a nozzle having a base end opened to the vertical cylinder 24. The tip outlet port a of the tube 27 is configured to protrude outward. Further, a thread 28 is provided around the inner peripheral lower portion of the peripheral wall 26, and is configured to be screwed with the thread 20 of the ring member 3 as shown in FIG. In addition, a plate-like engagement protrusion 14 is provided below the outer edge of the lower surface of the reinforcing plate 29 spanned between the inner surface upper part of the peripheral wall 26 and the outer surface upper part of the vertical cylinder 24 so as to reach a predetermined screwing level. However, it is configured to abut and engage with the engaging surface 13. A pair of the engaging protrusions 14 are also provided at symmetrical positions.
[0026]
A cylindrical piston 30 is linked to the lower end of the outer periphery of the stem 5, and a coil spring 31 for biasing the operating member A upward is interposed on the lower surface of the stem 5. Further, a suction valve (not shown) is provided at the lower end of the cylinder 4, and a discharge valve 32 is provided at the upper part in the stem 5. Of course, the internal structure of these pumps is not limited to this, and the configuration of this type of conventional pump can be employed.
[0027]
When the liquid jet pump configured as described above is filled with the liquid, after the liquid is filled in the container body 2, the liquid jet pump 1 is mounted as described above, and the jet head 6 is screwed to the ring member 3. . For example, as shown in FIG. 5, the operating member A is pushed down while being rotated by the capper 33, and the screw 28 of the ejection head 6 is screwed onto the screw 20 of the ring member 3. As the screwing progresses, the engaging protrusion 14 gets over the loosening prevention protrusion 16 and reaches the predetermined screwing level when it is brought into contact with and locked to the locking surface 13, and the operation member A is further rotated. When a preset numerical value is reached, the pressing plate 34 of the capper 33 is idled, and after a predetermined time has elapsed, the pump on the line moves. At this time, the lower surface of the peripheral wall of the ejection head may be configured not to contact the opposing surface.
[0028]
Further, when the liquid jet pump 1 is used, for example, by depressing the operating member A from the state of FIG. 1, the pressurized liquid in the cylinder 4 opens the discharge valve 32 and is ejected from the jet outlet a. When the actuating member A is raised, the suction valve is opened to suck the liquid in the container body 2 into the cylinder.
[0029]
FIG. 6 shows another embodiment of the present invention . In this embodiment, the threaded portion is provided on the inner peripheral surface portion of the ring member 3, and the locking surface 13 and the protrusion for preventing looseness are shown. An example in which the concave portion 23 forming the portion 16 is formed in the inner peripheral edge portion of the ring member 3 is shown.
[0030]
In this embodiment, the ring member 3 includes a fitting tube 17 that is fitted on the outer periphery of the upper end of the cylinder 4 by preventing over-extraction by means of a mutual engagement between protrusions. Further, the peripheral wall 19 is suspended downward from the outer peripheral edge of the top plate 18, and the guide cylinder 22 is inserted through the stem 5 while being fitted to the inner surface of the cylinder 4 from the inner peripheral edge of the back surface of the top plate 18. The screw 20 is formed on the upper portion of the guide tube 22.
[0031]
In addition, a concave portion 23 having a circular arc shape in plan view in which the bottom surface sequentially descends is formed on the inner periphery of the short cylindrical portion 35 standing on the inner peripheral edge of the upper surface, and one end surface forming the concave portion is configured as a locking surface 13. The loosening prevention protrusion 16 is provided on the peripheral surface forming the recess 23 immediately before the locking surface 13. A pair of the recess 23, the locking surface 13, and the loosening prevention protrusion 16 are formed at symmetrical positions.
[0032]
The basic structure of the ejection head 6 is the same as that of the above-described embodiment. In this embodiment, a screw 28 is provided around the lower outer periphery of the vertical cylinder 24 which is the upper outer periphery of the actuating member A, as shown in FIG. In this manner, the operating member A is configured to be screwed with the thread 20 of the ring member 3 in a state where the operating member A is pushed down. Further, the plate-like engaging protrusion 14 serving also as the riding over protrusion 15 is provided on the outer surface of the vertical cylinder 24 above the screw 28, and is brought into contact with and locked to the locking surface 13 at a predetermined screwing level. It is configured as follows. Also in the case of the present embodiment, the operation when the actuating member A is screwed is the same as that of the above embodiment, and the description thereof is omitted.
[0033]
In addition, although the material of each said member is not specifically limited, A synthetic resin is mainly used and it can manufacture by using a metal, an elastomer, etc. together as needed.
[0034]
【The invention's effect】
As described above, since the liquid jet pump of the present invention has the above-described configuration, it becomes possible to reduce variation in the opening torque adjusted by the management of the tightening torque, and the operating member is detached by an external force when not in use. In addition, it is possible to obtain the operational stability that the actuating member can be easily screwed off during use, and the structure can be formed without complication even when compared with conventional products. Special torque management is not required, resulting in improved productivity.
[0035]
The liquid jet pump of the second means, the frictional force or the like between Norikoshi peaks and loosening prevention protrusion is largely responsible for the opening torque of the actuating member A, their shape, the elements such as protrusion width appropriately By selecting, the opening torque can be constantly managed stably regardless of the tightening torque.
[Brief description of the drawings]
FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.
FIG. 2 is a perspective view showing a ring member of the embodiment.
FIG. 3 is a plan view showing a ring member of the same embodiment.
FIG. 4 is a partially cutaway side view showing a state in which the operating member of the embodiment is locked down.
FIG. 5 is an explanatory diagram for explaining the operation of the embodiment;
FIG. 6 is a partially cutaway side view showing another embodiment of the present invention.
FIG. 7 is a perspective view showing a ring member of the same embodiment.
FIG. 8 is a partially cutaway side view showing a state where the operating member of the embodiment is locked down.
[Explanation of symbols]
3 ... Ring member, 4 ... Cylinder, 5 ... Stem, 6 ... Ejection head,
12 ... Torque adjustment part, 13 ... Locking surface, 14 ... Engagement protrusion, 15 ... Passover protrusion,
16 ... Loosening prevention protrusion, 18 ... Ring member top plate, 19 ... Ring member peripheral wall,
23 ... arc-shaped recess, 26 ... jet head peripheral wall, 24 ... vertical cylinder, 27 ... nozzle cylinder,
A ... Actuating member, a ... Outlet,

Claims

上端部にリング部材(3) を嵌着したシリンダ(4) と、シリンダ(4) 上端開口から上方付勢状態で突出したステム(5) の上端に噴出ヘッド(6) を嵌着した作動部材(A) とを備え、作動部材(A) の上下動により装着した容器体内の液を吸上げて噴出ヘッド(6) の噴出口(a) より噴出する如く構成するとともに、作動部材(A) の押し下げ状態でリング部材(3) に螺着係止可能に構成した液体噴出ポンプに於いて、上記噴出ヘッド(6) が、上記ステム(5) 上端に嵌着した縦筒(24)を頂板(25)裏面より垂設するとともに、頂板(25)周縁部より周壁(26)を垂設し、且つ、縦筒(24)に基端を開口したノズル筒(27)の先端噴出口(a) を外方へ突出した噴出ヘッドであり、上記リング部材(3) に起立形成した係止面(13)と、上記噴出ヘッド(6) に設け且つ噴出ヘッド(6) の螺動下降時の所定螺着レベルに於いて上記係止面(13)に当接係止される係合突部(14)とからなるトルク調整部(12)を設け、上記係止面(13)が、リング部材(3) 上面内周縁部に起立した短筒部 (35) の内周に凹設した円弧状凹部(23)を形成する一端面であり、上記係合突部(14)が、噴出ヘッド縦筒 (24) 外面に突設し、噴出ヘッド(6) の回動に伴い上記円弧状凹部(23)を移動可能な係合突部であることを特徴とする液体噴出ポンプ。A cylinder (4) with a ring member (3) fitted to the upper end, and an operating member with a jet head (6) fitted to the upper end of a stem (5) protruding upward from the cylinder (4) upper end opening (A) is configured to suck up the liquid in the container body mounted by the vertical movement of the operating member (A) and eject the liquid from the ejection port (a) of the ejection head (6). In the liquid jet pump configured to be able to be screwed and locked to the ring member (3) in the depressed state, the jet head (6) has a vertical cylinder (24) fitted to the upper end of the stem (5) as a top plate. (25) The tip jet outlet (a) of the nozzle cylinder (27) is suspended from the back surface, the peripheral wall (26) is suspended from the peripheral edge of the top plate (25), and the base end is opened to the vertical cylinder (24). ) Projecting outwardly, and is provided on the ring member (3), the locking surface (13) standing upright, and the ejection head (6) and when the ejection head (6) is screwed down. Predetermined screwing Provided with a torque adjusting portion (12) comprising an engaging protrusion (14) that abuts and locks with the locking surface (13), and the locking surface (13) is provided with a ring member (3 ) Is an end surface forming an arcuate recess (23) recessed in the inner periphery of the short cylindrical portion (35) upstanding on the inner peripheral edge of the upper surface , the engagement protrusion (14) is a jet head vertical cylinder ( 24) A liquid jet pump characterized in that it is an engaging projection that protrudes from the outer surface and is capable of moving the arcuate recess (23) as the jet head (6) rotates.

上記係止面(13)と上記係合突部(14)とが当接する直前の螺着レベルに於いて、上記円弧状凹部(23)を形成する周面に、上記係合突部(14)が乗り越える緩み防止用突部(16)を設けてなる請求項１記載の液体噴出ポンプ。The engagement protrusion (14) is formed on the circumferential surface forming the arc-shaped recess (23) at a screwing level immediately before the engagement surface (13) and the engagement protrusion (14) abut. 2. A liquid jet pump according to claim 1, further comprising a protrusion (16) for preventing loosening.