JP4416072B2

JP4416072B2 - Cap with lid

Info

Publication number: JP4416072B2
Application number: JP2003153822A
Authority: JP
Inventors: 孝之阿部; 孝之後藤
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2010-02-17
Anticipated expiration: 2023-05-30
Also published as: JP2004352321A

Description

【０００１】
【発明の属する技術分野】
本発明は液体等注出用の蓋体付きキャップに関する。
【０００２】
【従来の技術】
小ノズルを起立する頂板から容器体口頸部外面へ嵌合させる内筒と該内筒を囲む外筒とを垂下し、該外筒上端部を小外径筒部とするキャップ本体と、上記小ノズル外面へ嵌合して密閉する小筒部を下面に有する頂壁外周から周壁を垂下して、該周壁下端部を上記小外径筒部へ嵌合させた蓋体とを、各後部でヒンジ連結し、該ヒンジを中心とする回動で蓋体の開閉が自在とし、又容器体外筒の左右両上半部を外筒から切離して弾性板に形成し、これ等弾性板を内方へ押込むと蓋体頂壁の裏面から垂下させた突部の斜面へ弾性板上端から延長された先端部が圧接して、突部を介して蓋体を押上げするよう設けた蓋体付きキャップが知られている（特許文献１）。
【０００３】
【特許文献１】
特許第３２７３３５９号公報
【０００４】
【発明が解決しようとする課題】
本発明も上記従来例のような小ノズル付きのキャップ本体後部へ、小ノズル密閉用の小筒部付き蓋体後部をヒンジ連結させて、蓋体を嵌合させたキャップに関するものであり、従来と異る機構での開蓋が容易としたものである。
【０００５】
【課題を解決するための手段】
第１の手段として、注出孔2aを有する頂板３から容器体口頸部外面へ嵌合させる内筒４と該内筒を囲む外筒５とを垂下し、かつ外筒上端部を小外径部７とするキャップ本体１と、上記注出孔閉塞部付き頂壁23外周から周壁24を垂設した蓋体21とを、各後部でヒンジ連結したキャップにおいて、上記キャップ本体左右の外筒５上部および頂板３部分を切離して起立部9a上端部から楔状板部9bを内方突出する弾性板部９，９に形成し、かつ、楔状板部9b，9bは先端部上面を傾下内方への斜面に形成すると共に、楔状板部9b，9b内方の頂板部分上面を内方への上昇斜面10a ，10a とし、又蓋体頂壁23から垂下させた押上げ板26，26下端面を上記上昇斜面10a ，10a 上へ位置させると共に、上記起立部9aの上部外面と該外面が接する蓋体周壁内面とに凹凸の係合手段を設け、上記弾性板部９，９の内方押込みで上記凹凸の係合が外れると共に、楔状板部9b，9bが上昇斜面10a ，10a と押上げ板26，26との間へ介入し、楔状板部9b，9bが上昇斜面10a ，10a に沿って上昇すると共に押上げ板26，26が楔状板部9b，9bの斜面に沿って上昇することで蓋体の上昇が可能に形成した。
【０００６】
第２の手段として、注出孔2aを有する頂板３から容器体口頸部外面へ嵌合させる内筒４と該内筒を囲む外筒５とを垂下し、かつ外筒上端部を小外径部７とするキャップ本体１と、上記注出孔閉塞部付き頂壁23外周から周壁24を垂設した蓋体21とを、各後部でヒンジ連結したキャップにおいて、上記キャップ本体前部の外筒上部および頂板部分を切離して起立部9a上端部から楔状板部9bを後方突出する弾性板部９に形成し、かつ、楔状板部9bは先端部上面を斜下内方への斜面に形成すると共に、該楔状板部後方の頂板部分上面を後方への上昇斜面10a に形成し、又蓋体頂壁23から垂下させた押上げ板26を上昇斜面10a 上へ位置させると共に、上記起立部9aの上部外面と該外面が接する蓋体周壁内面とに凹凸の係合手段を設け、上記弾性板部９の後方押込みで上記凹凸の係合が外れると共に、楔状板部9aが上昇斜面10a と押上げ板26との間へ介入し、楔状板部9bが上昇斜面10a に沿って上昇すると共に押上げ板26が楔状板部9bの斜面に沿って上昇することで蓋体の上昇が可能に形成した。
【０００７】
【発明の実施の形態】
以下図面について説明すると、１はキャップ本体であり、該キャップ本体は、左右方向へ長い楕円形状としており、小ノズル２を起立する頂板３から、図２が示すように容器体口頸部の外面へ嵌合させる内筒４と該内筒４を囲んで外筒５を垂下し、外筒上端部は図１のように上向き段部６を介して小外径部７に形成している。内筒４は口頸部嵌合のため眞円としており、外筒５は楕円形状をなす。上記小ノズル２は半球形状をなし、その上部前面を斜面として該斜面中心に注出孔2aを開口させている。
【０００８】
キャップ本体左右の外筒５上部および頂板部分は切離し線８穿設により切離して外筒部分上部が形成する起立部9aと、頂板部分が形成する楔状板部9bとで形成する弾性板部９，９に形成する。楔状板部は図２が示すように起立部上端内面から起立部を介して内方へほぼ水平に突出し、先端部上面を斜下内方への斜面として先端鋭角状に形成させている。該楔状板部先端は図２が示すように閉蓋時その楔状板部内方の頂板部分上面へ載置できるよう設けてあり、又その内方頂板部分上面へ突部10，10を横設させ、これ等突条の外方側上面を、上内方への上昇斜面10a ，10a としている。尚起立部9a上端の小外径部部分上端には係合突条11，11を付設している。尚12は口頸部内面へ嵌合させるシール筒である。
【０００９】
21は蓋体で、該蓋体はキャップ本体１の後方上部へヒンジ22を介して連結させている。該ヒンジは弾性反転可能なヒンジで行うとよく、該ヒンジを中心とする回動により蓋体21はキャップ本体上面へ嵌合可能に形成する。該嵌合時において、頂壁23外周から垂下する周壁24下部を小外径部７外面へ嵌合させ、又周壁下端面を上向き段部６上面へ載置可能にしている。該蓋体もキャップ本体と同様に平面楕円形状としている。
【００１０】
該蓋体は既述小ノズル２外面へ嵌合させて注出孔2aを密閉できる小筒部25を頂壁23下面から垂下する。又頂壁前後方向中間の左右両部から連結板26ａの両端から側板26ｂ，26ｂを突出させた断面コ字形状の押上げ板26，26を、その連結板26ａを外方側へ位置させて垂下し、図２が示すように連結板26ａ，26ａ下端が楔状板部9b先端と上昇斜面10a ，10a 基端との間に位置するよう設けている。尚該押上げ板はどのようなものでもよく、１枚の板でもよい。又周壁24の左右両部内面へは、蓋体閉塞時に既述係合突条11，11が嵌合する凹状部27，27を穿設している。該凹状部とは透孔を含む。周壁24前面へは開蓋用滑り止め突部28を付設している。
【００１１】
上記キャップは合成樹脂材で一体成形するが、該成形時は、弾性板部９，９は図４が示すように上部がやや外方へ張り出すように僅かに傾斜させ起立させて楔状板部9b先端と、該先端内方の頂板部分外端上面との間に僅かな隙間が形成されるよう設け、図２が示すように閉蓋によって弾性板部９は正立状態となり、このとき楔状板部9b先端が上記頂板部分外端部の上面へ接するよう設ける。このため係合突条11，11上面は下外方への斜面としてあり、閉蓋時蓋体周壁下端面がその斜面へ圧接することで弾性板部上部は内方へ押され、係合突条11，11が凹状部27，27内へ嵌合する。
【００１２】
上記構成において、図２が示す閉蓋状態から図３のように弾性板部９，９を内方へ押圧すると、楔状板部9b，9bの先端が上昇斜面10a と押上げ板26下端との間へ入り、かつ上昇斜面に沿って上昇することで、又押上げ板26は楔状板部の斜面に沿って上昇することとなり、従って押上げ板は、上昇斜面を上昇する楔状板部の上昇分と、楔状板部の斜面を上昇する押上げ板の上昇分との両上昇分を加えた高さだけ上昇して蓋体を押上げる。
【００１３】
弾性板部の押込み解放で、弾性板部は図４の状態に復帰する。該開蓋状態から容器体胴部を圧搾する等で容器体内液体を注出孔2aから注出できる。
【００１４】
閉蓋の際はヒンジを中心に回動させて蓋体21を戻す。このとき、係合突条11の斜面へ蓋体周壁下端面が接し、又小ノズル２外面へ小筒部25が浅く嵌合するから、そのまま蓋体21を押下げすることで、係合突条11は凹状部27内へ嵌合し、又小筒部25は注出孔2aを密閉する。
【００１５】
以下他の実施形態について説明するが、同一部分については同一符号を付することで説明を省略する。
【００１６】
図５は第２実施形態を示す。該実施形態は、第１実施形態の弾性板部９、上昇斜面10a 、押上げ板26等をキャップ本体、および蓋体21の前部に設けたものであり、開蓋、閉蓋の操作は第１実施形態の場合と同様に行えばよい。
【００１７】
尚既述注出孔2aと、該注出孔を密閉する蓋体頂壁の密閉部とは、どのように行ってもよく例えば注出孔2aを頂板３に直接穿設し、又蓋体下面から閉塞栓を垂下させて、閉蓋時に密閉され、開蓋により開孔するようにすることが考えられる。
【００１８】
【発明の効果】
本発明は既述構成とするものであり、各請求項記載のようにすることで弾性板部９を押込みしない限り開蓋不能であり、よって幼児の開蓋は不能となり、不測の事故の発生を防止できる。
【００１９】
請求項１記載のようにすることで、蓋体頂壁23から垂下された押上げ板26，26が、弾性板部９，９の内方押込みによって、上昇斜面10a ，10a 上へ乗上げする楔状板部9bの斜面で更に押上げられることとなり、蓋体の押上げが容易となる。
【００２０】
請求項２のようにすることで、請求項１記載の上昇斜面10a ，10a の弾性板部９、押上げ板26はキャップ本体および蓋体の前部に設けるだけでよく、構造を簡易化できる。
【００２１】
【図面の簡単な説明】
【図１】開蓋状態で示す本発明キャップの斜視図である。
【図２】図１キャップを閉蓋状態で示す断面図である。
【図３】図２状態から開蓋操作で蓋体前部を押上げた状態を示す断面図である。
【図４】成形時における、キャップ本体の断面図である。
【図５】第２実施形態における、開蓋状態キャップの斜視図である。
【符号の説明】
１…キャップ本体，２…小ノズル，３…頂板，４…内筒，５…外筒，７…小外径部
９…弾性板部，9b…楔状板部，10a …上昇斜面，21…蓋体，22…ヒンジ，25…小筒部
26…押上げ板[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap with a lid for dispensing liquid or the like.
[0002]
[Prior art]
A cap body that hangs an inner cylinder that fits from the top plate that erects the small nozzle to the outer surface of the container body neck and the outer cylinder and an outer cylinder that surrounds the inner cylinder, and the upper end portion of the outer cylinder is a small outer diameter cylindrical portion; A lid body that hangs from the outer periphery of the top wall that has a small cylindrical portion that fits and seals to the outer surface of the small nozzle on the lower surface, and that has a lower end portion of the peripheral wall fitted to the small outer diameter cylindrical portion. The lid is opened and closed freely by rotating around the hinge, and the left and right upper halves of the container outer cylinder are separated from the outer cylinder to form an elastic plate. The lid provided so that the tip extended from the upper end of the elastic plate comes into pressure contact with the slope of the protrusion hanging from the back surface of the top wall of the lid when pushed in, and pushes the lid up through the protrusion An attached cap is known (Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent No. 3273359 [0004]
[Problems to be solved by the invention]
The present invention also relates to a cap in which a lid is fitted to a rear portion of a cap body with a small nozzle as in the above-described conventional example by hinge-connecting the rear portion of the lid with a small tube portion for sealing a small nozzle. It is easy to open the lid with a different mechanism.
[0005]
[Means for Solving the Problems]
As a first means, the inner cylinder 4 to be fitted from the top plate 3 having the pouring hole 2a to the outer surface of the container body neck and the outer cylinder 5 surrounding the inner cylinder is suspended, and the upper end of the outer cylinder is slightly outside. A cap body 1 having a diameter portion 7 and a cap body 21 having a peripheral wall 24 suspended from the outer periphery of the top wall 23 with the outlet hole blocking portion are hinge-connected at each rear portion. 5 The upper plate 3 and the top plate 3 are separated from each other, and the wedge plate 9b is formed on the elastic plate 9, 9 projecting inward from the upper end of the standing portion 9a, and the wedge plates 9b, 9b are inclined at the top of the tip. The upper surface of the wedge-shaped plate portions 9b, 9b is formed as an inclined surface 10a, 10a on the inner side of the wedge-shaped plate portions 9b, 9b, and the push-up plates 26, 26 are suspended from the lid top wall 23. An end face is positioned on the rising slopes 10a, 10a, and an engaging means having irregularities on the upper outer surface of the upright portion 9a and the inner surface of the peripheral wall of the lid body in contact with the outer surface Provided, intervened to between at inner indentation with engagement of the asperities is out of the elastic plate 9, 9, wedge-shaped plate portions 9b, 9b are Noboru Ue slope 10a, and 10a and the push-up plate 26, 26, The wedge-shaped plate portions 9b and 9b are lifted along the rising slopes 10a and 10a, and the push-up plates 26 and 26 are lifted along the slopes of the wedge-shaped plate portions 9b and 9b so that the lid can be raised .
[0006]
As a second means, the inner cylinder 4 fitted from the top plate 3 having the pouring hole 2a to the outer surface of the container body neck and the outer cylinder 5 surrounding the inner cylinder is suspended, and the upper end of the outer cylinder is slightly outside. A cap body 1 having a diameter portion 7 and a lid body 21 having a peripheral wall 24 suspended from the outer periphery of the top wall 23 with the pouring hole blocking portion is hinged at each rear portion. The upper part of the cylinder and the top plate part are separated from each other, and the wedge-shaped plate part 9b is formed on the elastic plate part 9 protruding rearward from the upper end part of the upright part 9a. In addition, the upper surface of the top plate portion behind the wedge-shaped plate portion is formed on the rising slope 10a to the rear, and the push-up plate 26 suspended from the lid top wall 23 is positioned on the rising slope 10a, and An uneven engaging means is provided on the upper outer surface of 9a and the inner peripheral wall inner surface of the lid that is in contact with the outer surface, and the elastic plate portion 9 is pushed backward. In conjunction with the engagement of the asperities is disengaged, wedge-shaped plate portion 9a intervened to between a raised inclined surface 10a and the lifting plate 26, the lifting plate 26 with wedge-shaped plate portion 9b is raised along the rising slope 10a is wedge The lid can be lifted by rising along the slope of the plate portion 9b .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, reference numeral 1 denotes a cap body. The cap body has an elliptical shape that is long in the left-right direction. From the top plate 3 that stands up the small nozzle 2, the outer surface of the container body neck as shown in FIG. The outer cylinder 5 is suspended from the inner cylinder 4 and the inner cylinder 4 to be fitted to each other, and the upper end portion of the outer cylinder is formed in the small outer diameter portion 7 via the upward stepped portion 6 as shown in FIG. The inner cylinder 4 is an ellipse for fitting the mouth and neck, and the outer cylinder 5 is elliptical. The small nozzle 2 has a hemispherical shape, and an extraction hole 2a is opened in the center of the inclined surface with the upper front surface as an inclined surface.
[0008]
The upper part of the outer cylinder 5 and the top plate part on the left and right sides of the cap body are separated by forming a separation line 8 to form an upright part 9a formed by the upper part of the outer cylinder part, and an elastic plate part 9 formed by a wedge-shaped plate part 9b formed by the top plate part, 9 to form. As shown in FIG. 2, the wedge-shaped plate portion protrudes almost horizontally inward from the inner surface of the upright portion through the upright portion, and the upper surface of the front end portion is formed in an acute angle shape as an inclined surface in the obliquely inward direction. As shown in FIG. 2, the wedge-shaped plate tip is provided so that it can be placed on the top surface of the top plate portion inside the wedge-shaped plate portion when the lid is closed. The upper surfaces on the outer sides of these ridges are upward and inwardly rising slopes 10a and 10a. Engagement ridges 11 are attached to the upper end of the small outer diameter portion at the upper end of the upright portion 9a. Reference numeral 12 denotes a seal cylinder fitted to the inner surface of the mouth neck.
[0009]
Reference numeral 21 denotes a lid which is connected to the upper rear portion of the cap body 1 via a hinge 22. The hinge is preferably an elastically reversible hinge, and the lid 21 is formed so as to be fitted to the upper surface of the cap body by rotating around the hinge. At the time of the fitting, the lower portion of the peripheral wall 24 depending from the outer periphery of the top wall 23 is fitted to the outer surface of the small outer diameter portion 7, and the lower end surface of the peripheral wall can be placed on the upper surface of the stepped portion 6. The lid is also in the shape of a plane ellipse like the cap body.
[0010]
The lid body hangs from the lower surface of the top wall 23 to fit the outer surface of the small nozzle 2 as described above and seal the pouring hole 2a. In addition, push-up plates 26 and 26 having U-shaped cross-sections in which the side plates 26b and 26b protrude from both ends of the connecting plate 26a from the left and right middle portions in the longitudinal direction of the top wall, and the connecting plate 26a is positioned outward. As shown in FIG. 2, the lower ends of the connecting plates 26a, 26a are provided so that the lower ends of the connecting plates 26a, 26a are positioned between the distal end of the wedge-shaped plate portion 9b and the rising slopes 10a, 10a. The push-up plate may be any type and may be a single plate. In addition, recessed portions 27 and 27 into which the above-described engaging protrusions 11 and 11 are fitted when the lid is closed are formed in the inner surfaces of the left and right portions of the peripheral wall 24. The concave portion includes a through hole. An anti-slip protrusion 28 for opening the lid is attached to the front surface of the peripheral wall 24.
[0011]
The cap is integrally formed of a synthetic resin material. At the time of molding, the elastic plate portions 9 and 9 are slightly inclined so that the upper portion slightly protrudes outward as shown in FIG. A slight gap is formed between the tip of 9b and the top surface of the top end of the top plate inside the tip. As shown in FIG. The front end of the plate portion 9b is provided so as to contact the upper surface of the top plate portion outer end portion. For this reason, the upper surface of the engaging ridges 11 and 11 is inclined downward and outward, and when the lid is closed, the lower end surface of the peripheral wall of the lid body is pressed against the inclined surface, so that the upper part of the elastic plate is pushed inward and the engaging protrusion The strips 11 and 11 are fitted into the concave portions 27 and 27.
[0012]
In the above configuration, when the elastic plate portions 9 and 9 are pressed inward from the closed state shown in FIG. 2 as shown in FIG. 3, the leading ends of the wedge-shaped plate portions 9b and 9b are formed between the rising slope 10a and the lower end of the push-up plate 26. By entering and rising along the rising slope, the push-up plate 26 rises along the slope of the wedge-shaped plate portion, so that the push-up plate moves up the wedge-shaped plate portion that rises the rising slope. The lid is lifted up by a height obtained by adding both the amount of the lift and the lift of the push-up plate that lifts the slope of the wedge-shaped plate portion.
[0013]
The elastic plate portion returns to the state shown in FIG. 4 by releasing the pushing of the elastic plate portion. The liquid in the container can be poured out from the dispensing hole 2a by, for example, squeezing the container body from the opened state.
[0014]
When closing the lid, the lid 21 is returned by rotating around the hinge. At this time, the lower end surface of the peripheral wall of the lid body is in contact with the slope of the engaging ridge 11 and the small tube portion 25 is shallowly fitted to the outer surface of the small nozzle 2. The strip 11 is fitted into the concave portion 27, and the small tube portion 25 seals the pouring hole 2a.
[0015]
Other embodiments will be described below, but the same parts are denoted by the same reference numerals and the description thereof is omitted.
[0016]
FIG. 5 shows a second embodiment. In this embodiment, the elastic plate portion 9, the rising slope 10a, the push-up plate 26 and the like of the first embodiment are provided in the front portion of the cap body and the lid body 21, and the operation of opening and closing the lid is performed. What is necessary is just to carry out similarly to the case of 1st Embodiment.
[0017]
The pouring hole 2a and the sealing portion of the lid top wall that seals the pouring hole may be used in any way, for example, the pouring hole 2a is directly drilled in the top plate 3, and the lid body. It is conceivable that a closing plug is suspended from the lower surface so that it is sealed when the lid is closed and opened by opening the lid.
[0018]
【The invention's effect】
The present invention is configured as described above, and as described in each claim, it is impossible to open the lid unless the elastic plate portion 9 is pushed in, so that the infant cannot be opened, and an unexpected accident occurs. Can be prevented.
[0019]
According to the first aspect of the present invention, the push-up plates 26 and 26 suspended from the lid top wall 23 ride on the rising slopes 10a and 10a by the inward pushing of the elastic plate portions 9 and 9. The lid is further pushed up by the slope of the wedge-shaped plate portion 9b, and the lid can be pushed up easily.
[0020]
According to the second aspect, the elastic plate portion 9 and the push-up plate 26 of the rising slopes 10a and 10a according to the first aspect need only be provided at the front portion of the cap body and the lid, and the structure can be simplified. .
[0021]
[Brief description of the drawings]
FIG. 1 is a perspective view of a cap of the present invention shown in an open state.
FIG. 2 is a cross-sectional view showing the cap of FIG. 1 in a closed state.
3 is a cross-sectional view showing a state in which a lid front part is pushed up by a lid opening operation from the state of FIG. 2;
FIG. 4 is a cross-sectional view of the cap body at the time of molding.
FIG. 5 is a perspective view of an open state cap in the second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cap main body, 2 ... Small nozzle, 3 ... Top plate, 4 ... Inner cylinder, 5 ... Outer cylinder, 7 ... Small outer diameter part 9 ... Elastic board part, 9b ... Wedge-like board part, 10a ... Ascending slope, 21 ... Cover Body, 22 ... Hinge, 25 ... Small tube
26 ... Push-up plate

Claims

A cap in which an inner cylinder 4 fitted from the top plate 3 having an extraction hole 2a to the outer surface of the container body neck and an outer cylinder 5 surrounding the inner cylinder is suspended and the upper end of the outer cylinder is a small outer diameter portion 7. In the cap in which the main body 1 and the lid body 21 having the peripheral wall 24 suspended from the outer periphery of the top wall 23 with the outlet hole blocking portion are hinge-connected at each rear portion, the upper part of the outer cylinder 5 on the left and right sides of the cap body and the top plate 3 portion The wedge-shaped plate portion 9b is formed on the elastic plate portions 9 and 9 projecting inwardly from the upper end portion of the standing portion 9a, and the wedge-shaped plate portions 9b and 9b are formed so that the upper surface of the distal end portion is inclined and inclined inward. At the same time, the upper surface of the top plate portion inside the wedge-shaped plate portions 9b, 9b is set as inwardly rising slopes 10a, 10a, and the lower end surfaces of the push-up plates 26, 26 suspended from the top wall 23 of the lid body are set as the rising slope 10a. , 10a, and is provided with concave and convex engaging means on the upper outer surface of the upright portion 9a and the inner peripheral wall surface of the lid body, which is in contact with the outer surface. 9,9 in inner indentation with engagement of the asperities is out of the wedge-shaped plate portions 9b, 9b are Noboru Ue slope 10a, intervene to between 10a and the lifting plate 26 and 26, wedge-shaped plate portions 9b, 9b The lid body is formed so that the lid body can be lifted by rising along the rising slopes 10a, 10a and the lifting plates 26, 26 rising along the slopes of the wedge-shaped plate portions 9b, 9b. With cap.

A cap in which an inner cylinder 4 fitted from the top plate 3 having an extraction hole 2a to the outer surface of the container body neck and an outer cylinder 5 surrounding the inner cylinder is suspended and the upper end of the outer cylinder is a small outer diameter portion 7. In the cap in which the main body 1 and the lid body 21 in which the peripheral wall 24 is suspended from the outer periphery of the top wall 23 with the outlet hole blocking portion are hinge-connected at each rear portion, the upper portion of the outer cylinder and the top plate portion at the front portion of the cap body The wedge-shaped plate portion 9b is formed on the elastic plate portion 9 protruding rearward from the upper end portion of the upright portion 9a, and the wedge-shaped plate portion 9b is formed with the upper surface of the distal end portion as a slanting surface in the obliquely downward direction. The upper surface of the top plate portion at the rear of the head is formed on the rearward rising slope 10a, and the push-up plate 26 suspended from the lid top wall 23 is positioned on the upper slope 10a, and the upper outer surface of the upright portion 9a an outer surface provided with irregularities of the engaging means and the lid inner surface of the peripheral wall in contact with the, engagement of the asperities in the rear indentation of the elastic plate portions 9 With disengaged, wedge-shaped plate portion 9a intervened to between a raised inclined surface 10a and the lifting plate 26, the lifting plate 26 with wedge-shaped plate portion 9b is raised along the rising slope 10a is along the inclined surface of the wedge-shaped plate portion 9b A cap with a lid, which is formed so that the lid can be lifted by raising .