JP3597701B2

JP3597701B2 - Liquid injection device

Info

Publication number: JP3597701B2
Application number: JP14404098A
Authority: JP
Inventors: 哲司近藤; 光展山崎
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1998-05-26
Filing date: 1998-05-26
Publication date: 2004-12-08
Anticipated expiration: 2018-05-26
Also published as: JPH11334799A

Description

【０００１】
【発明の属する技術分野】
本発明は、液体注入口に密着状に嵌合して液体を注入するようにした液体注入装置に関する。
【０００２】
【従来の技術】
従来、例えば液体注入口から液体注入部に向けて液体を注入する際、液体注入内部を真空引きしたり、液体の圧力を高めて注入するような時は、少なくとも液体注入口を密封状にシーリングして注入作業を行うのが一般的である。
【０００３】
このシーリング時において、液体注入口の近傍外壁に蓋係止用等の突起物があるような時は、液体注入装置に突起物係止用の爪部材等を設けて、この爪部材を突起物に係合させて液体注入装置を液体注入口に位置決めするとともに、液体注入装置に設けたシール部材等を液体注入口の内壁に密着させて注入口を密封したり、または爪部材を利用して液体注入装置を液体注入口に位置決めする際、液体注入装置に設けたシール部材を液体注入口の端面に密接させて密封するような技術が知られている。
【０００４】
【発明が解決しようとする課題】
ところが、上記のような従来装置では、液体注入内部をより強力に真空引きしたり、液体圧力をより強力に高めたりすると、密封状態が維持出来なくなり、効率良く注入作業を行うことが出来ないという問題がある。
【０００５】
本発明は、上記問題点に鑑みなされたものであり、その目的とするところは、液体注入口を強力に密封して、真空圧や液体圧を高めても密封効果が損なわれることのない液体注入装置の提供にある。
【０００６】
【課題を解決するための手段】
上記目的を達成するため本発明は、装置本体側に設けられ且つ液体注入口の内壁に当接し得る第１シール部材と、装置本体側に設けられ且つ液体注入口の開口端面に当接し得る第２シール部材と、装置本体に対して揺動自在にされると同時に相対移動可能とされ且つ揺動によって液体注入口の外周面の係止部に係脱自在な爪部材を設け、この爪部材を装置本体に対して相対移動させることで爪部材を揺動させて係止部に係合させ、同時に係止部に引張り力を加えて第２シール部材を液体注入口の端面に圧着せしめると共に、第１シール部材を下端部に先細りのテーパを設けたピストン部材の押圧によって液体注入口の内壁に対して圧着せしめるようにした。
【０００７】
このように爪部材を係止部に係合させた状態で係止部に引張り力を加え、第２シール部材を液体注入口の端面に圧着させることで同部の密封効果を高めるようにする。
この際、第１シール部材をピストン部材の押圧によって液体注入口の内壁に圧着せしめるようにした。このようにピストン部材によって第１シール部材を液体注入口の内壁に圧着させるので、一層密封効果を高めることが出来る。
【０００８】
また請求項２では、爪部材の相対移動と係止部に対する爪部材の係合をカム機構によって構成するようにした。
そして、カム機構によって、爪部材の相対移動に連動して爪部材が揺動するようにすれば、装置を簡素に構成することが出来る。
【００１０】
【発明の実施の形態】
本発明の実施の形態について添付した図面に基づき説明する。
ここで図１は本発明に係る液体注入装置を上から見下ろした状態の斜視図、図２は同装置を見上げた状態の斜視図、図３は同装置を液体注入口に固定する前の状態の断面図、図４は同装置を液体注入口に固定した後の状態の斜視図、図５はカム機構の一部をなす長孔とピンの説明図、図６はカム部材の作用を説明する作用図で図４のＡ−Ａ線断面図である。
【００１１】
本発明に係る液体注入装置は、例えば自動車の製造工場において、製造中の自動車のブレーキ機構にブレーキオイルを注入するようなブレーキオイル注入装置として適用され、この注入装置はブレーキ機構から真空引きする真空引き機構と、加圧されたブレーキオイルを供給する圧液供給機構を備えるとともに、ブレーキ機構のブレーキ液注入口にセットされた後、注入口を密封してブレーキオイルを供給出来るようにしている。
【００１２】
そしてこのブレーキオイル注入装置１は、図１及び図２に示すように、作業者が手動で簡単に操作出来るようなサイズの装置本体２と、この装置本体２に固着されるグリップ３と、装置本体２に対して水平面で回動自在且つ上下方向に相対移動可能に取り付けられる爪保持筒４と、この爪保持筒４に対して揺動自在に取付けられる複数の爪部材５と、前記爪保持筒４に固着される回転操作用グリップ６を備えており、作業者が片手でグリップ３を握り、他方の手で回転操作用グリップ６を把持して水平方向に回転させることで、注入装置１を後述するブレーキオイル注入口Ｔに位置決めすると同時に、注入口Ｔを密封するようにしている。
【００１３】
すなわち、この注入装置１は、図３及び図４に示すように、装置本体２の下端円筒部２ａの先端面には断面Ｔ型の半円リング部材７がボルト等で固定され、この半円リング部材７の内側方向には、略円筒形状の外側支持部材８が溝に嵌合して固定されるとともに、この外側支持部材８の筒内には略円筒形状の内側支持部材１０が一体に取付けられている。
【００１４】
そしてこの内側支持部材１０の筒内には、ノズル部材１１が装着されており、このノズル部材１１の中心部には液体注入及び真空引きを行うための貫通孔１１ａが設けられ、その上端が装置本体２側に連通している。
【００１５】
また、外側支持部材８の下端側周面には、雄ネジ部が形成されており、この雄ネジ部にシール支持部材１２が螺合している。そしてこのシール支持部材１２の外周面には、外側に突出するフランジ部が設けられており、このフランジ部の上部に第１シール部材としてのＯリング１３が嵌着されている。
そしてこのシール支持部材１２のフランジ部は、ブレーキオイル注入口Ｔの開口部よりやや小径で内部に挿入可能とされている。
【００１６】
一方、前記半円リング部材７の下方には、略円筒形状のシリンダケース部材１４が固定されており、このシリンダケース部材１４の下端面には、弾性体からなる第２シール部材１５が取付けられている。そしてこの第２シール部材１５は、ブレーキオイル注入口Ｔの端面に当接可能とされている。
【００１７】
またシリンダケース部材１４の内部には、ピストン部材１６が上下に摺動自在に内装されており、下端部には先細りのテーパが設けられるとともに、このテーパが前記Ｏリング１３に当接している。そしてこのピストン部材１６が降下すると、Ｏリング１３がシール支持部材１２との間に挟まれて圧縮され、外方に膨出することで、Ｏリング１３がブレーキオイル注入口Ｔの内壁に圧着されるようにしている。
【００１８】
ところで、前記半円リング部材７には、図４に示すような複数のピン１８が突設されており、カム機構１７を構成している。すなわち、このカム機構１７は、以下に説明するように、装置本体２に対する爪部材５の相対移動と、揺動運動を連動させるためのものであり、前記第２シール部材１５によるシール効果を高めるためのものである。
【００１９】
前記爪保持筒４は、半円リング部材７の外壁及びシリンダケース部材１４の外壁に対して回動自在に設けられ、また前記ピン１８に対応する個所には、図１及び図５に示すような横長で且つ途中で若干中心線が下降する長孔４ｈが設けられ、この長孔４ｈを通して前記ピン１８が挿通している。
このため、爪保持筒４を回動させると、長孔４ｈを挿通するピン１８の作用によって、爪保持筒４は装置本体２に対して上下方向に相対移動する。
【００２０】
また、爪保持筒４の下方寄りの位置には、外周面から突出する軸受２２（図１、図２）が設けられ、この軸受２２に対して前記爪部材５が枢支ピン２０によって揺動自在に枢支されている。
そしてこの爪部材５の下端部側には、内側に向けて張出し且つブレーキオイル注入口Ｔの蓋係止部Ｔｋの下面形状に合わせた形状の係止突起５ｋが設けられるとともに、上端部寄りの外面には溝が形成され、この溝に弾性リング２１が嵌着されている。
【００２１】
また、この弾性リング２１より上方の爪部材５には、図１及び図６に示すようなカム部５ｃが設けられ、回動中にピン１８に当接する側にはテーパが設けられ、ピン１８の突出面上に円滑に乗り上げることが出来るようにしている。
【００２２】
このため、爪部材５は平素は前記弾性リング２１の付勢力によって、下方の係止突起５ｋが開いており、爪保持筒４の回転に伴って爪部材５のカム部５ｃがピン１８の上に乗り上げると、係止突起５ｋが閉じることになる。
すなわち、前記カム機構１７は、装置本体２側から突出するピン１８と、装置本体２側に対して回動自在な爪保持筒４及び爪部材５と、爪保持筒４に設けられ且つ前記ピン１８を挿通せしめた長孔４ｈと、爪部材５のカム部５ｃ等によって構成され、爪部材５の相対移動と揺動が連動するようにされている。
【００２３】
以上のようなブレーキオイル注入装置１の操作方法及び作用等について説明する。
本実施形態のブレーキオイル注入装置１は、例えば作業者が操作しやすいように自動車組立ラインのブレーキオイル注入ステーションに配置され、搬送サポート用重力バランサに吊下げられている。
【００２４】
そこで作業者は、装置本体２のグリップ３と回転操作用グリップ６を握り、自動車のダッシュボードのエンジンルーム側に設けられたブレーキオイル注入口Ｔの内部にノズル部材１１等を挿入し、図３に示すような状態にセットする。
【００２５】
次に作業者が回転操作用グリップ６を所定方向に回すことで爪保持筒４が回動し、長孔４ｈに係合するピン１８の作用によって爪保持筒４が上昇しながら、同時に各爪部材５のカム部５ｃがそれぞれのピン１８の突出面上に乗り上げて、爪部材５の下端部を内側に揺動させる。
【００２６】
すると、爪部材５の係止突起５ｋは、図４に示すように、ブレーキオイル注入口Ｔの蓋係止部Ｔｋの下面に係合し、この蓋係止部Ｔｋを下から持ち上げるように力を加えながら僅かに上昇する。
このため、シリンダケース部材１４の下面の第２シール部材１５は、ブレーキオイル注入口Ｔの端面に押し付けられることになり、同部の密封効果が高まる。
【００２７】
次に作業者は不図示のボタンを操作し、ピストン部材１６を作動させてＯリング１３を潰す方向に移動させる。このことにより、Ｏリング１３は外側に膨出し、ブレーキオイル注入口Ｔの内壁に向けて押し付けられ、同部の密封性を向上させる。
【００２８】
上記の操作によって密封効果を高めた後、真空引きしてブレーキオイルを注入し、注入が完了すると、回転操作用グリップ６を操作して逆方向に回転させれば、弾性リング２１の付勢力で爪部材５の係止突起５ｋが蓋係止部Ｔｋから外れ、装置を離脱させることが出来る。
【００２９】
以上のような操作によって、ブレーキオイル注入口Ｔの端面と内壁を完全に密封することが出来、真空引き圧を高めても、オイル供給圧を高めてもオイルが漏れ出すような不具合はない。
【００３０】
尚、本発明は以上のような実施形態に限定されるものではない。本発明の特許請求の範囲に記載した事項と実質的に同一の構成を有し、同一の作用効果を奏するものは本発明の技術的範囲に属する。
例えば本装置はブレーキオイル以外の液体、例えばラジエータ液またはその他の液体供給装置に適用することが出来る。
また、液体注入孔の係止部としては、蓋係止部Ｔｋのような凸部以外に凹部等でも良い。
【００３１】
【発明の効果】
以上のように本発明に係る液体注入装置は、液体注入口の内壁に当接する第１シール部材と、液体注入口の開口端面に当接する第２シール部材を設け、装置本体に対して揺動自在且つ相対移動可能とされる爪部材によって、液体注入口の係止部に引張り力を加えて第２シール部材を液体注入口の端面に圧着させると共に、第１シール部材を下端部に先細りのテーパを設けたピストン部材の押圧によって液体注入口の内壁に対して圧着させるようにしたため、シール効果を高めることができ、真空引き圧が高まっても、供給液体圧が高まっても密封部から液体が漏れ出すような不具合がない。
また請求項２のように、爪部材の相対移動と係止部に対する爪部材の係合をカム機構によって構成すれば、装置を簡素に構成することが出来る。
【図面の簡単な説明】
【図１】本発明に係る液体注入装置を上から見下ろした状態の斜視図
【図２】同装置を見上げた状態の斜視図
【図３】同装置を液体注入口に固定する前の状態の断面図
【図４】同装置を液体注入口に固定した後の状態の斜視図
【図５】カム機構の一部をなす長孔とピンの説明図
【図６】カム部材の作用を説明する作用図で図４のＡ−Ａ線断面図
【符号の説明】
１…ブレーキオイル注入装置、２…装置本体、４…爪保持筒、４ｈ…長孔、５…爪部材、５ｃ…カム部、１３…Ｏリング、１５…第２シール部材、１６…ピストン部材、１７…カム機構、１８…ピン、Ｔ…ブレーキオイル注入口、Ｔｋ…蓋係止部。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid injecting device that is fitted into a liquid injecting port so as to inject a liquid.
[0002]
[Prior art]
Conventionally, for example, when injecting a liquid from a liquid injection port toward a liquid injection section, when the inside of the liquid injection is evacuated or when the pressure of the liquid is increased to inject the liquid, at least the liquid injection port is hermetically sealed. It is common to perform the injection work.
[0003]
At the time of sealing, if there is a projection for locking the lid on the outer wall near the liquid inlet, a claw member or the like for locking the projection is provided in the liquid injection device, and the claw member is connected to the projection. The liquid injection device is positioned at the liquid injection port by engaging with the liquid injection device, and a sealing member or the like provided on the liquid injection device is brought into close contact with the inner wall of the liquid injection port to seal the injection port, or by using a claw member. 2. Description of the Related Art When positioning a liquid injection device at a liquid injection port, a technique is known in which a sealing member provided on the liquid injection device is closely contacted with an end face of the liquid injection port to seal the liquid injection device.
[0004]
[Problems to be solved by the invention]
However, in the conventional apparatus as described above, if the inside of the liquid injection is evacuated more strongly, or if the liquid pressure is increased more strongly, the sealed state cannot be maintained and the injection operation cannot be performed efficiently. There's a problem.
[0005]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid that does not impair the sealing effect even when the vacuum pressure or the liquid pressure is increased by strongly sealing the liquid inlet. In providing an injection device.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first seal member provided on the apparatus body side and capable of contacting the inner wall of the liquid inlet, and a first seal member provided on the apparatus body side and capable of contacting the opening end face of the liquid inlet. (2) a claw member which is swingable with respect to the apparatus main body and which is movable relative to the apparatus main body and which can be disengaged from a locking portion on an outer peripheral surface of the liquid inlet by swinging; the device is swung a claw member be moved relative to the main body is engaged with the engagement portion, the second sealing member with allowed to crimp the end face of the liquid inlet and the tensile force to the engaging portion at the same time The first seal member is pressed against the inner wall of the liquid inlet by pressing a piston member having a tapered lower end .
[0007]
In this manner, the second sealing member is pressed against the end face of the liquid inlet by applying a tensile force to the locking portion in a state where the claw member is engaged with the locking portion, so that the sealing effect of the portion is enhanced. .
At this time, the first seal member was pressed against the inner wall of the liquid inlet by pressing the piston member. Since the first seal member is pressed against the inner wall of the liquid inlet by the piston member, the sealing effect can be further enhanced .
[0008]
According to the second aspect, the relative movement of the claw member and the engagement of the claw member with the locking portion are configured by a cam mechanism.
If the claw member swings in conjunction with the relative movement of the claw member by the cam mechanism, the device can be simply configured.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a perspective view of the liquid injection device according to the present invention viewed from above, FIG. 2 is a perspective view of the liquid injection device looking up, and FIG. 3 is a state before fixing the device to the liquid injection port. FIG. 4 is a perspective view showing a state after the apparatus is fixed to a liquid inlet, FIG. 5 is an explanatory view of a long hole and a pin forming a part of a cam mechanism, and FIG. FIG. 5 is a sectional view taken along line AA of FIG.
[0011]
The liquid injection device according to the present invention is applied as a brake oil injection device that injects brake oil into a brake mechanism of an automobile being manufactured, for example, in a manufacturing factory of an automobile, and the injection device is a vacuum pump that evacuates the brake mechanism. A pulling mechanism and a pressure fluid supply mechanism for supplying pressurized brake oil are provided, and after being set at a brake fluid inlet of the brake mechanism, the inlet is sealed so that brake oil can be supplied.
[0012]
As shown in FIGS. 1 and 2, the brake oil injection device 1 has a device main body 2 of a size that can be easily operated manually by an operator, a grip 3 fixed to the device main body 2, and a device. A claw holding tube 4 attached to the main body 2 so as to be rotatable in a horizontal plane and relatively movable up and down; a plurality of claw members 5 attached to the claw holding tube 4 so as to be swingable; The injection device 1 is provided with a rotation operation grip 6 fixed to the cylinder 4, and an operator grips the grip 3 with one hand and grips the rotation operation grip 6 with the other hand to rotate in the horizontal direction. Are positioned at a brake oil inlet T described later, and at the same time, the inlet T is sealed.
[0013]
That is, as shown in FIGS. 3 and 4, a semicircular ring member 7 having a T-shaped cross section is fixed to the tip end surface of the lower cylindrical portion 2a of the device main body 2 with bolts or the like, as shown in FIGS. A substantially cylindrical outer support member 8 is fitted and fixed in the groove in the inner direction of the ring member 7, and a substantially cylindrical inner support member 10 is integrally formed in the outer support member 8. Installed.
[0014]
A nozzle member 11 is mounted in the cylinder of the inner support member 10, and a through hole 11a for performing liquid injection and evacuation is provided in the center of the nozzle member 11, and the upper end thereof is provided with a device. It communicates with the main body 2 side.
[0015]
A male screw portion is formed on the lower peripheral surface of the outer support member 8, and the seal support member 12 is screwed into the male screw portion. An outwardly protruding flange portion is provided on the outer peripheral surface of the seal support member 12, and an O-ring 13 as a first seal member is fitted on an upper portion of the flange portion.
The flange portion of the seal support member 12 is slightly smaller in diameter than the opening of the brake oil inlet T and can be inserted therein.
[0016]
On the other hand, a substantially cylindrical cylinder case member 14 is fixed below the semicircular ring member 7, and a second seal member 15 made of an elastic body is attached to a lower end surface of the cylinder case member 14. ing. The second seal member 15 can contact the end face of the brake oil inlet T.
[0017]
A piston member 16 is provided inside the cylinder case member 14 so as to be slidable up and down. A tapered taper is provided at the lower end, and this taper is in contact with the O-ring 13. When the piston member 16 descends, the O-ring 13 is sandwiched between the seal support member 12 and compressed, and swells outward, whereby the O-ring 13 is pressed against the inner wall of the brake oil inlet T. I am trying to.
[0018]
By the way, a plurality of pins 18 as shown in FIG. 4 are projected from the semicircular ring member 7 to constitute a cam mechanism 17. That is, as described below, the cam mechanism 17 is for linking the relative movement of the claw member 5 with respect to the apparatus main body 2 and the swinging movement, and enhances the sealing effect of the second seal member 15. It is for.
[0019]
The claw holding cylinder 4 is provided rotatably with respect to the outer wall of the semicircular ring member 7 and the outer wall of the cylinder case member 14, and at a position corresponding to the pin 18, as shown in FIGS. 1 and 5. A long hole 4h is provided which is horizontally long and whose center line slightly descends on the way, and the pin 18 is inserted through the long hole 4h.
For this reason, when the claw holding cylinder 4 is rotated, the claw holding cylinder 4 is vertically moved relative to the apparatus main body 2 by the action of the pin 18 inserted through the elongated hole 4h.
[0020]
Further, a bearing 22 (FIGS. 1 and 2) protruding from the outer peripheral surface is provided at a position closer to the lower side of the claw holding cylinder 4, and the claw member 5 is swung by a pivot pin 20 with respect to this bearing 22. It is freely pivoted.
At the lower end side of the claw member 5, a locking projection 5k that protrudes inward and has a shape conforming to the lower surface shape of the lid locking portion Tk of the brake oil injection port T is provided, and is located near the upper end. A groove is formed on the outer surface, and an elastic ring 21 is fitted in the groove.
[0021]
Further, the claw member 5 above the elastic ring 21 is provided with a cam portion 5c as shown in FIGS. 1 and 6, and a taper is provided on the side that contacts the pin 18 during rotation. On the protruding surface of the car.
[0022]
For this reason, in the claw member 5, the lower locking projection 5 k is opened by the urging force of the elastic ring 21, and the cam portion 5 c of the claw member 5 is moved above the pin 18 with the rotation of the claw holding cylinder 4. , The locking projection 5k is closed.
That is, the cam mechanism 17 includes a pin 18 protruding from the apparatus main body 2 side, the claw holding cylinder 4 and the claw member 5 rotatable with respect to the apparatus main body 2 side, and the pin The claw member 5 is constituted by an elongated hole 4h through which the nut 18 is inserted, the cam portion 5c of the claw member 5, and the like.
[0023]
The operation method and operation of the above-described brake oil injection device 1 will be described.
The brake oil injection device 1 according to the present embodiment is disposed at a brake oil injection station of an automobile assembly line, for example, so as to be easily operated by an operator, and is suspended from a gravity balancer for transport support.
[0024]
Then, the operator grips the grip 3 and the rotation operation grip 6 of the device main body 2 and inserts the nozzle member 11 and the like into the inside of the brake oil injection port T provided on the engine room side of the dashboard of the automobile, and FIG. Set as shown in.
[0025]
Next, when the operator turns the rotation operation grip 6 in a predetermined direction, the claw holding cylinder 4 is rotated, and the claw holding cylinder 4 is raised by the action of the pin 18 engaged with the elongated hole 4h, and at the same time, each claw is moved. The cam portions 5c of the members 5 ride on the protruding surfaces of the respective pins 18, and swing the lower end portions of the claw members 5 inward.
[0026]
Then, the locking projection 5k of the claw member 5 is engaged with the lower surface of the lid locking portion Tk of the brake oil inlet T as shown in FIG. 4, and a force is applied to lift the lid locking portion Tk from below. It rises slightly while adding.
For this reason, the second seal member 15 on the lower surface of the cylinder case member 14 is pressed against the end surface of the brake oil inlet T, and the sealing effect of the same is enhanced.
[0027]
Next, the operator operates a button (not shown) to operate the piston member 16 to move the O-ring 13 in the direction of crushing. As a result, the O-ring 13 swells outward and is pressed against the inner wall of the brake oil inlet T, thereby improving the sealing performance of the same.
[0028]
After the sealing effect is enhanced by the above operation, the vacuum oil is evacuated and the brake oil is injected, and when the injection is completed, the rotating operation grip 6 is operated to rotate in the opposite direction, and the elastic force of the elastic ring 21 is applied. The locking projection 5k of the claw member 5 comes off the lid locking portion Tk, and the device can be detached.
[0029]
By the above operation, the end face and the inner wall of the brake oil inlet T can be completely sealed, and there is no problem that the oil leaks even if the evacuation pressure is increased or the oil supply pressure is increased.
[0030]
Note that the present invention is not limited to the above embodiments. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same functions and effects belong to the technical scope of the present invention.
For example, the present apparatus can be applied to a liquid other than the brake oil, for example, a radiator liquid or another liquid supply device.
In addition, the locking portion of the liquid injection hole may be a concave portion or the like in addition to the convex portion such as the lid locking portion Tk.
[0031]
【The invention's effect】
As described above, the liquid injection device according to the present invention is provided with the first seal member abutting on the inner wall of the liquid injection port and the second seal member abutting on the opening end face of the liquid injection port, and swings with respect to the apparatus main body. The second seal member is pressed against the end face of the liquid inlet by applying a pulling force to the locking portion of the liquid inlet by a claw member which is freely and relatively movable , and the first seal member is tapered to the lower end. The sealing effect can be enhanced by pressing the inner wall of the liquid inlet by pressing the tapered piston member, so that even if the evacuation pressure is increased or the supply liquid pressure is increased, the liquid from the sealing portion is increased. There is no defect that leaks out.
Further, if the relative movement of the claw member and the engagement of the claw member with the locking portion are configured by a cam mechanism, the apparatus can be simply configured.
[Brief description of the drawings]
FIG. 1 is a perspective view of a liquid injection device according to the present invention viewed from above. FIG. 2 is a perspective view of the liquid injection device looking up. FIG. 3 is a state before fixing the device to a liquid injection port. FIG. 4 is a perspective view of a state after the apparatus is fixed to a liquid injection port. FIG. 5 is an explanatory view of a long hole and a pin forming a part of a cam mechanism. FIG. 6 explains an operation of a cam member. FIG. 4 is a sectional view taken along line AA of FIG.
DESCRIPTION OF SYMBOLS 1 ... Brake oil injection device, 2 ... Device main body, 4 ... Claw holding cylinder, 4h ... Long hole, 5 ... Claw member, 5c ... Cam part, 13 ... O ring, 15 ... Second seal member, 16 ... Piston member, 17: cam mechanism, 18: pin, T: brake oil inlet, Tk: lid locking part.

Claims

A first seal member provided on the device body side and capable of contacting the inner wall of the liquid inlet, a second seal member provided on the device body side and capable of contacting the opening end face of the liquid inlet, and A claw member which is swingable and can be relatively moved at the same time, and which can be disengaged from a locking portion on the outer peripheral surface of the liquid inlet by swinging, and the claw member is relatively moved with respect to the apparatus main body; The claw member is swung to engage with the locking portion, and at the same time, the second sealing member is pressed against the end face of the liquid inlet by applying a tensile force to the locking portion, and the first sealing member is A liquid injection device, characterized in that a lower end portion of the liquid injection device is pressed against an inner wall of the liquid injection port by pressing a piston member having a tapered taper .

2. The liquid injection device according to claim 1, wherein the relative movement of the claw member and the engagement of the claw member with the locking portion are configured by a cam mechanism.