JP3733368B2

JP3733368B2 - Sealed container lid locking structure

Info

Publication number: JP3733368B2
Application number: JP2004521113A
Authority: JP
Inventors: 健嗣三木
Original assignee: 株式会社フレックス
Priority date: 2002-07-16
Filing date: 2002-07-16
Publication date: 2006-01-11
Anticipated expiration: 2022-07-16
Also published as: WO2004007310A1; CN100387494C; JPWO2004007310A1; TW200404715A; CN1625509A; AU2002318563A1

Description

【技術分野】
本発明は、容器本体とこれに螺合する蓋体とからなる容器の蓋体係止構造に関し、容器本体首部に設けた切欠部とキャップ部外周に設けた切欠部を相当接させることで、キャップ部と一体成形した蓋体の一領域を常に容器本体の決まった一領域に対応さることを可能とし、さらに、キャップ底部中央に設けた傾斜加工が施された環状スカート部により密封性を向上させた密封容器の蓋体係止構造に関するものである。
【背景技術】
従来、容器首部とキャップとが螺合するタイプの容器にあっては、単に雄螺子と雌螺子とを嵌合させるだけの構造を有するものが多い。さらに、安価に製造加工する目的、及び取扱いの容易さから、容器及びキャップ共々雄螺子、雌螺子が合成樹脂により成形されている。
しかしながら、上記のような容器においては、キャップの締め付けすぎ、あるいは締め付け不足は使用者の感覚に左右され、完全な螺合状態が常に得られるとは限らない。また、度重なる使用によって螺子山に摩耗を伴うことから、螺合に不具合が生じ、前述の事象は経年とともに一層顕著となる。
さらに、前述の理由から、容器本体に対して常にキャップの同じ一側面あるいは同じ領域を対応させるものとなっておらず、例えば、容器本体とキャップを一体と捉えたデザインを施そうとしても、両者の間にズレが生じることが多いことから、これまで別々にデザインが施されてきたり、キャップはデザインの対象から外されてきたりしてきた。
そこで、本発明は上記の問題点に鑑み、キャップの密封性を向上させるとともに、キャップと容器本体とを常に一定の領域で対応させ、使用者の感覚に依らずとも、完全な螺合状態を常に得ることができ、キャップの締め付け具合によるズレ、また経年の摩耗によるズレや不具合が生じない密封容器の蓋体係止構造を提供することを目的とする。
【発明の開示】
本発明の密封容器の蓋体係止構造は、容器首部と螺合する蓋体を有する密封容器の蓋体係止構造であって、当該蓋体は、透明の断面凹形把持部と把持部中央内側に設けたキャップ部とからなり、また、当該蓋体は容器本体より硬質であって、容器本体頂上部にキャップの周壁に合わせて円形の嵌合溝を容器本体首部の周囲に設け、さらに当該嵌合溝に螺旋状底部を形成し、一端に鋭角に切欠部を設け、キャップ部の周壁端部は、当該切欠部に合わせて鋭角に切欠部を成形され、かつ、嵌合溝の螺旋状溝底部の形状に合わせて成形された構造を有し、さらに、前記キャップ部内側上底には容器開口部方向へ延設した先細りする傾斜を有する環状スカート部を有し、当該環状スカート部の外周が容器本体開口部内周に係合し、当該容器本体首部周壁が当該環状スカート部の傾斜に沿って半径外方向に撓変形し、シール係合するとともに、該キャップ部の周壁端部に成形される切欠部が、該嵌合溝内に納まって、該嵌合溝に設けられる切欠部と当接して、該キャップ部と該容器本体首部との螺合が完了されることを特徴とし、かつ、前記把持部内壁とキャップ部とを支持片により補強した構造とし、閉蓋時に把持部の一領域が、容器本体の決まった一領域に常に対応することを要旨とする。
【図面の簡単な説明】
第１図は、第一の参考例に係る密封容器の蓋体係止構造を有する容器の全体参考図であり、第２図は、第一の参考例に係る蓋体の構造を示した拡大斜視図であり、第３図は、第一の参考例に係る螺合完了した蓋体と容器首部の端面図であり、第４図は、第一の参考例に係る容器本体首部を示す一部省略斜視図であり、第５図は、本発明の実施例を示す蓋体係止構造を示す斜視図であり、第６図は、第二の参考例を示す蓋体係止構造説明略図であり、第７図は、第三の参考例を示す蓋体係止構造説明略図であり、第８図は、第四の参考例を示す蓋体係止構造説明略図である。
【発明を実施するための最良の形態】
本発明の密封容器の蓋体係止構造を有する密封容器は、断面凹形把持部が把持部中央内側に設けられたキャップ部と一体成形された蓋体と、首部に開口部を有する容器本体とからなる密封容器であって、その構成材料は、ポリスチレン、ポリエチレン、ポリプロピレン、ポリ塩化ビニルなどの熱可塑性樹脂やフェノール樹脂などの熱硬化性樹脂その他の合成プラスチックを材料とし、蓋体は容器本体より硬質に成形されている。そしてこれらの成形は射出成形、中空成形、真空成形、圧縮成形その他の周知の成形法による。また、内容物の種類に応じて、本願の特徴を損なわないものであれば、前記材料に限らず他の材料によっても良い。
第１図及び第３図に示す第一の参考例と同様に、本発明の密封容器の蓋体係止構造を有する密封容器の蓋体は、断面凹形状の把持部（３）と、当該把持部中央内側に設けた、内周に雌螺子（１１）を有するキャップ部（４）とを一体成形した構造を有する。把持部（３）は透明に構成する。また、第２図に示す第一の参考例と同様に、補強のためさらに前記把持部内壁とキャップ部とを支持片（７）により支持する構造とする。そして、当該キャップ部周壁端面には、第５図に示すように、鋭角に設けた切欠部（６）を形成する。
容器本体首部（９）には、第３図に示す第一の参考例と同様に、前記キャップ部雌螺子と螺合する雄螺子（１０）を設け、かつ、第５図に示すように、容器本体頂上部にキャップ（４）の周壁に合わせて円形の嵌合溝（１５）を容器本体首部（９）の周囲に設け、さらに当該嵌合溝に螺旋状底部を成形し、一端には鋭角に切欠部（１３）を形成し、当該切欠部（１３）と前記切欠部（６）とが相当接することでキャップ部と容器本体首部との螺合がその位置で停止される。
また、第３図に示す第一の参考例と同様に、キャップ部内側上底には容器開口部方向へ延設した先細りする傾斜（１４）を有する環状スカート部（８）を有し、当該傾斜に容器本体首部先端内周が係合し、キャップ部と容器本体首部との螺合完了時には、当該容器本体首部周壁に半径外方向への力が加わり、シール係合する。この際、容器本体は蓋体より軟質な材料により成形しているため、首部周壁先端部は第３図に示す第一の参考例と同様に、若干半径外方向へ変形する。
なお、容器本体の形状は、後述の実施例に掲げる形状に限られず、本願の特徴を有したものであれば、その他の立体形状としてよい。
【参考例１】
以下に、第一の参考例を第１図〜第４図を参照して説明する。
第１図は、第一の参考例に係る密封容器の蓋体係止構造を有する容器の全体参考図、第２図は、第一の参考例に係る蓋体の構造を示した拡大斜視図、第３図は、第一の参考例に係る螺合完了した蓋体と容器首部の端面図、第４図は、第一の参考例に係る容器本体首部を示す一部省略斜視図である。なお、第２図中、雌螺子を、また、第４図中、雄螺子、雌螺子、把持部を省略して図示している。（１）は容器、（２）は蓋体、（３）は把持部、（４）はキャップ部、（５）は容器本体、（６）はキャップ部周壁に設けた切欠部、（７）は支持片、（８）は環状スカート部、（９）は容器本体首部、（１０）は雄螺子、（１１）は雌螺子、（１２）は肉盛部、（１３）は肉盛部に設けた切欠部、（１４）は環状スカート部の外側傾斜である。
本参考例における密閉容器（１）は第１図に示したように、首部（９）を有する直方体の容器本体（５）と、当該容器本体の形状と外径に合わせた蓋体（２）とから構成される。
第１図及び第３図に示すように、本参考例に係る密封容器の蓋体係止構造を有する密封容器の蓋体（２）は、断面凹形状の把持部（３）と当該把持部中央内側に設けたキャップ部（４）とからなり、当該キャップ部内周には雌螺子（１１）が形成され、キャップ部周壁の端面には、螺子山と直交方向に切欠部（６）が形成されている。さらに、第２図に示すように、補強のために把持部内壁とキャップ部とを支持片（７）により支持する構造とする。
一方、容器本体（５）の首部（９）には雄螺子（１０）が設けられ、当該容器本体の首基部には、前記キャップ部外周と同外径の肉盛部（１２）を形成するとともに、当該肉盛部に螺子山と直交方向に設けた切欠部（１３）を形成する。
なお、螺子山と直交方向に設けた、とは第４図に示すように容器開口部の中心を通る軸（ P ）を含む面で切り欠く意である。
本参考例における密閉容器（１）は、１辺５５ｍｍ、全長１４０ｍｍを有し、その内蓋体の高さは３０ｍｍである。
材質は容器本体（５）がポリエチレン、蓋体（２）はポリスチレンによりそれぞれ成形され、蓋体（２）は容器本体（５）より硬質である。なお、材質は本願の特徴を損なわないものであればその他の合成樹脂等を材料としても良い。
把持部（３）を手掛かりに、容器本体首部（９）の雄螺子（１０）キャップ部（４）内周に設けた雌螺子（１１）に嵌合させ、さらに螺合を進めるが、第４図に示すように、キャップ部周壁端面の切欠部（６）が、容器本体首基部肉盛部（１２）の螺子山と直交方向に設けた切欠部（１３）と相当接した時点で螺合が完了する。
容器本体は蓋体より軟質な材料により成形しているため、第３図に示すように、容器本体首部先端の内壁が螺合を進めるとともに環状スカート部（８）に嵌合し、当該先端が環状スカート部（８）の外側傾斜（１４）に沿って半径外側方向に若干変形し、シール係合することでより一層密封性を高めることができる。
以上のことから、本参考例によれば、容器の密封性を高めることができるだけでなく、つまり、キャップ部周壁端面の切欠部（６）と容器本体首基部肉盛部（１２）の切欠部（１３）とが相当接した時点が螺合完了時点であることから、閉蓋操作が使用者の感覚に依らずに容易に確実となり、合成樹脂を材料とした容器であっても、永年使用に伴う螺子山の摩耗による螺合の不具合が生じることなく、また、螺合完了時に蓋体の一側面が容器本体の一側面とズレることなく常に面一に対応することから蓋体と容器本体とを一体と捉えたデザインを施すことが可能となる。
さらに、キャップ部に設けた切欠部（６）、及び容器本体首基部肉盛部に設けた切欠部（１３）の位置を、容器本体正面と決定したい側面中央部近傍に定めておけば、容器本体（５）と蓋体（２）とが別々になっていても、正面がどの側面であるか夫々一目瞭然となり、取扱いに便利である。
【実施例】
本発明の実施例を第５図を参照しながら説明する。
第５図は本発明の実施例を示す蓋体係止構造を示す斜視図であり、雄螺子、雌螺子は省略して図示している。（１５）は嵌合溝を示し、その他図中に示す数字は第一の参考例と同様に対応するものである。
本実施例における容器本体（５）は円柱状体であり、当該形状及び外径に合わせて、キャップ部（４）と一体成形された把持部（３）が形成されている。また、容器本体頂上部にキャップ（４）の周壁に合わせて円形の嵌合溝（１５）を容器本体首部（９）の周囲に設け、さらに当該嵌合溝に螺旋状底部を成形し、図示するように一端には鋭角に切欠部（１３）を設けた。
キャップ部（４）の周壁端部は、上記切欠部（１３）の形状に合わせて切欠部（６）が鋭角に成形され、かつ、嵌合溝（１５）の螺旋状溝底部の形状に合わせて成形されている。
その他、環状スカート部、雄螺子、雌螺子等については図示しないが、これらの構成及び構造は第一の参考例と同様である。
本実施例に示す構造にあっても、閉蓋操作の確実性及び把持部の一領域と容器本体の一領域が常に対応するといった効果は、第一の参考例と同様に得られるものである。また、前述の第一の参考例においては、直角に面を立てた両切欠部であるが、本実施例のように鋭角に成形することで、螺合がより確実に完了する。
そして、本実施例により蓋体と容器本体との螺合が完了した場合には、切欠部が嵌合溝（１５）内に納まるため、把持部（３）を透明とした場合にはすっきりとしたデザインとなる。
【参考例２】
第二の参考例を第６図を参照しながら説明する。
第６図は第二の参考例を示す蓋体係止構造説明略図である。（１６）は雄螺子の容器開口部側先端面、（１７）は雌螺子の上底部側先端溝面であり、その他図中に示す数字は第一の参考例と同様に対応するものである。なお、第６図は（１６）（１７）の構造と形状を示す略図であるため、一部の雄螺子、雌螺子は省略している。
雄螺子の開口部側先端（１６）を螺子山と直交方向に面を立てて雄螺子成形し、かつ、キャップ部に設けた雌螺子の上底部側先端溝を螺子山と直交方向に面を立てて雌螺子溝を終了させる。かかる構造により、容器本体首部（９）の雄螺子（１０）の先端をキャップ部（４）の雌螺子溝に嵌合させ、螺合を進め、最終的に雄螺子の容器開口部側先端面（１６）が雌螺子の上底部側先端溝面（１７）に当接した時点で螺合が完了する。
雄螺子先端面（１６）、雌螺子先端溝面（１７）を設ける位置を予め決まった側面に対応させておけば、螺合完了時には常に把持部の一領域と容器本体の決まった一領域に対応させることが可能となる。
また、キャップ部の環状スカート部を本参考例に示す構造と合わせて設けることで、密封性を高めることができる。
【参考例３】
第三の参考例を第７図を参照しながら説明する。
第７図は、第三の参考例を示す蓋体係止構造説明略図である。なお、第７図の最下段の図は、蓋体（２ａ）と容器本体（１）との係止状態を示す略図であるため、容器首部をはじめ、雄螺子、雌螺子は省略している。（２ａ）は蓋体、（４ａ）は透明キャップ、（１８）は嵌合孔、（１９）は蓋体（２ａ）に設けた係止凸部、（２０）は蓋体（２ａ）に設けた係止凹部、（２１）は容器（１）に設けた係止凸部、（２２）は容器（１）に設けた係止凹部、その他、図中に示す数字は第一の参考例と同様に対応するものである。
本参考例においては、蓋体（２ａ）と透明キャップ（４ａ）とを別体に構成し、蓋体（２ａ）に当該透明キャップ（４ａ）と嵌合する嵌合孔（１０）を設け、かつ、蓋体（３ａ）と容器本体（１）とが係止する係止手段を有する。
容器首部に透明キャップ（４ａ）を螺合し、その後、蓋体（２ａ）と容器本体（１）を、蓋体（２ａ）に設けた係止凸部（１９）と容器本体（１）に設けた係止凹部（２２）を、また、蓋体（２ａ）に設けた係止凹部（２０）と容器本体（１）に設けた係止凸部（２１）を夫々係止させるものである。
第７図の最下段の図は容器本体（１）と透明キャップ（４ａ）、蓋体（２ａ）の嵌合状態を示す断面略図であるが、当該図に示すように、透明キャップ（４ａ）と蓋体（２ａ）とは面一になるように構成されている。
なお、容器側の係止手段（２１）（２２）は第７図の中段の図に示すように一部に設けるものの他、周囲に設ける態様でも構わない。
本参考例による構成によれば、透明キャップが蓋体によりカバーされていることから緩む可能性は少なく、また、キャップが透明であるため、内容物の混合状態をキャップを空けることなく容易に確認でき、さらに、係止手段により蓋体と容器本体との係合が確実となり好ましい。
【参考例４】
第四の参考例を第８図を参照しながら説明する。
第８図は、第四の参考例を示す蓋体係止構造説明略図である。なお、第８図の最下段の図は、蓋体（２ａ）と透明キャップ（４ａ）との係止状態を示す略図であるため、容器首部をはじめ、雄螺子、雌螺子は省略している。（２３）は蓋体（２ａ）に設けた係止凸部、（２４）は透明キャップ（４ａ）に設けた係止凹部、その他、図中に示す数字は先の参考例と同様に対応するものである。
本参考例は、第三の参考例のバリエーションの発明に係るものであり、
第８図の最上段の図に示すように、嵌合孔（１８）に幅を持たせ、当該嵌合孔（１８）側壁に係止凸部（２３）を４箇所設け、第８図の中段の図に示すように、当該係止凸部（２３）に対応させて透明キャップ（４ａ）に係止凹部（２４）を設けてなるものである。なお、第８図の最下段の図に示すように、本参考例においても、透明キャップ（４ａ）と蓋体（２ａ）とは面一になるように構成されている。
本参考例による構成によっても、内容物の混合状態をキャップを空けることなく容易に確認でき、さらに、蓋体と透明キャップとが係合することから、容器本体（１）への特別な加工が不要である。
【産業上の利用可能性】
以上のように、本発明によれば、密封性を高めつつ、容器本体側及びキャップ部に形成した両切欠部が相当接することにより閉蓋操作の完了を正確、かつ容易に認識でき、合成樹脂製の容器でも、永年使用に伴う螺子山の摩耗による螺合の不具合を生じることがない。
また、螺合完了時に蓋体の一側面あるいは一領域と、容器本体の一側面あるいは一領域とがズレることなく、常に面一に対応することから、蓋体と容器本体とを一体と捉えたデザインを施すことが可能となる。【Technical field】
The present invention relates to a container lid locking structure comprising a container body and a lid body screwed to the container body, by bringing the notch portion provided in the container body neck portion and the notch portion provided in the outer periphery of the cap portion into substantial contact, It is possible to always correspond one area of the lid body integrally formed with the cap part to a predetermined area of the container body, and further improve the sealing performance by the inclined skirt part provided in the center of the cap bottom part. The present invention relates to a lid locking structure for a sealed container.
[Background]
2. Description of the Related Art Conventionally, many types of containers in which a container neck and a cap are screwed have a structure in which a male screw and a female screw are simply fitted. Furthermore, for the purpose of manufacturing and processing at a low cost and ease of handling, both the container and the cap are made of a male screw and a female screw made of a synthetic resin.
However, in the container as described above, over-tightening or under-tightening of the cap depends on the sense of the user, and a complete screwed state is not always obtained. In addition, since the screw thread is worn due to repeated use, a problem occurs in the screwing, and the above-described phenomenon becomes more prominent as time passes.
Furthermore, for the reasons described above, the same side surface or the same region of the cap does not always correspond to the container body. For example, even if an attempt is made to design the container body and the cap as one body, Since there is often a gap between the two, the design has been applied separately and the cap has been excluded from the design.
Therefore, in view of the above problems, the present invention improves the sealing performance of the cap, and always makes the cap and the container main body correspond to each other in a certain area, so that a completely screwed state can be obtained without depending on the sense of the user. An object of the present invention is to provide a lid locking structure for a sealed container that can be always obtained and does not cause a displacement due to a tightening condition of a cap, or a displacement or a defect due to aged wear.
DISCLOSURE OF THE INVENTION
The lid locking structure for a sealed container according to the present invention is a lid locking structure for a sealed container having a lid threadedly engaged with the container neck, and the lid includes a transparent cross-section concave gripping portion and a gripping portion. The cap is provided on the inner side of the center, and the lid is harder than the container body, and a circular fitting groove is provided around the neck of the container body at the top of the container body in accordance with the peripheral wall of the cap. Further, a spiral bottom portion is formed in the fitting groove, a notch portion is provided at an acute angle at one end, and a peripheral wall end portion of the cap portion is formed at an acute angle according to the notch portion, and the fitting groove A structure formed in accordance with the shape of the bottom of the spiral groove; and further, an annular skirt portion having a taper slope extending toward the container opening portion is formed on the inner top of the cap portion, and the annular skirt The outer periphery of the container engages the inner periphery of the container body opening, and the neck of the container body Bends radially outward along the inclination of the annular skirt portion and seal-engages, and a notch formed at the end of the peripheral wall of the cap portion fits in the fitting groove and A structure in which the cap portion and the container main body neck portion are brought into contact with a notch portion provided in a mating groove, and the gripping portion inner wall and the cap portion are reinforced by a support piece. The gist is that one region of the gripper always corresponds to one predetermined region of the container body when the lid is closed .
[Brief description of the drawings]
FIG. 1 is an overall reference diagram of a container having a lid locking structure for a sealed container according to a first reference example , and FIG. 2 is an enlarged view showing the structure of a lid according to a first reference example. is a perspective view, FIG. 3 is an end view of the threaded lid and the container neck has been completed according to the first reference example, FIG. 4 shows one showing a container body neck according to the first reference example FIG. 5 is a perspective view showing a lid locking structure showing an embodiment of the present invention , and FIG. 6 is a schematic diagram showing a lid locking structure showing a second reference example. FIG. 7 is a schematic illustration of a lid locking structure showing a third reference example , and FIG. 8 is a schematic drawing of a lid locking structure showing a fourth reference example .
BEST MODE FOR CARRYING OUT THE INVENTION
A sealed container having a lid locking structure for a sealed container according to the present invention includes a lid body integrally formed with a cap portion having a concave cross-section gripping portion provided inside the gripping portion center, and an opening at the neck portion. The construction material is made of thermoplastic resin such as polystyrene, polyethylene, polypropylene, polyvinyl chloride, thermosetting resin such as phenol resin, and other synthetic plastics, and the lid is the container body It is molded harder . These moldings are performed by known molding methods such as injection molding, hollow molding, vacuum molding, compression molding and the like. Moreover, according to the kind of content, as long as the characteristic of this application is not impaired, it is not restricted to the said material, You may use another material.
Similar to the first reference example shown in FIG. 1 and FIG. 3, the lid of the sealed container having the lid locking structure of the sealed container of the present invention comprises a grip portion (3) having a concave cross section and the It has a structure in which a cap part (4) having a female screw (11) on the inner periphery is formed integrally with the grip part at the center inner side. The grip portion (3) is configured to be transparent. Moreover, it is set as the structure which supports the said holding part inner wall and a cap part with a support piece (7) further for reinforcement similarly to the 1st reference example shown in FIG . And the notch part (6) provided in the acute angle is formed in the said cap part surrounding wall end surface, as shown in FIG .
As in the first reference example shown in FIG. 3 , the container body neck (9) is provided with a male screw (10) that is screwed with the cap female screw, and as shown in FIG. A circular fitting groove (15) is provided around the neck of the container body (9) in accordance with the peripheral wall of the cap (4) at the top of the container body, and a spiral bottom is formed in the fitting groove, A notch (13) is formed at an acute angle, and the notch (13) and the notch (6) are substantially in contact with each other, so that the screwing of the cap and the container body neck is stopped at that position.
Further, similarly to the first reference example shown in FIG. 3, the cap portion has an annular skirt portion (8) having a tapered inclination (14) extending toward the container opening portion on the inner bottom of the cap portion. The inner periphery of the tip of the container body neck engages with the inclination, and when the cap part and the neck of the container body are completely screwed together, a force in the radially outward direction is applied to the peripheral wall of the container body neck so that the seal is engaged. At this time, since the container body is formed of a material softer than the lid, the tip of the peripheral wall of the neck portion is slightly deformed radially outward as in the first reference example shown in FIG.
The shape of the container body is not limited to the shape described in the examples described later, and may be other three-dimensional shape as long as it has the characteristics of the present application.
[Reference Example 1]
Hereinafter, a first reference example will be described with reference to FIGS.
FIG. 1 is an overall reference diagram of a container having a lid locking structure for a sealed container according to a first reference example, and FIG. 2 is an enlarged perspective view showing the structure of a lid according to a first reference example . , Figure 3 is an end view of a screwing completed lid and the container neck according to the first reference example, FIG. 4 is a fragmentary perspective view showing the container body neck according to the first reference example . In FIG. 2, the female screw is shown, and in FIG. 4, the male screw, the female screw, and the gripping portion are omitted. (1) is a container, (2) is a lid, (3) is a gripping part, (4) is a cap part, (5) is a container body, (6) is a notch provided on the peripheral wall of the cap part, (7) Is a support piece, (8) is an annular skirt, (9) is a container body neck, (10) is a male screw, (11) is a female screw, (12) is a build-up part, and (13) is a build-up part. The provided notch (14) is the outer slope of the annular skirt.
As shown in FIG. 1, the sealed container (1) in this reference example is a rectangular parallelepiped container body (5) having a neck (9), and a lid body (2) adapted to the shape and outer diameter of the container body. It consists of.
As shown in FIGS. 1 and 3, the lid (2) of the sealed container having the lid locking structure of the sealed container according to the present reference example includes a grip section (3) having a concave cross section and the grip section. It consists of a cap part (4) provided inside the center, a female screw (11) is formed on the inner periphery of the cap part, and a notch part (6) is formed on the end surface of the peripheral wall of the cap part in a direction perpendicular to the screw thread. Has been. Furthermore, as shown in FIG. 2, it is set as the structure which supports a holding part inner wall and a cap part with a support piece (7) for reinforcement.
On the other hand, the neck (9) of the container body (5) is provided with a male screw (10), and a built-up part (12) having the same outer diameter as the outer periphery of the cap part is formed on the neck base of the container body. At the same time, a notch (13) provided in the direction perpendicular to the screw thread is formed in the overlay.
The term “provided in a direction orthogonal to the thread” means to cut out a plane including an axis ( P ) passing through the center of the container opening as shown in FIG.
The sealed container (1) in this reference example has one side of 55 mm and a total length of 140 mm, and the height of the inner lid is 30 mm.
The container body (5) is made of polyethylene and the lid body (2) is molded of polystyrene. The lid body (2) is harder than the container body (5). As long as the material does not impair the characteristics of the present application, other synthetic resins or the like may be used.
With the gripping part (3) as a clue, the male screw (10) of the container main body neck part (9) is fitted into the female screw (11) provided on the inner periphery of the cap part (4), and the screwing is further advanced. As shown in the drawing, when the notch (6) on the end wall of the cap part is substantially in contact with the notch (13) provided in the direction orthogonal to the thread of the neck portion of the container main body (12). Is completed.
Since the container body is formed of a material softer than the lid, as shown in FIG. 3, the inner wall of the container body neck advances and engages with the annular skirt (8). It is possible to further improve the sealing performance by slightly deforming radially outward along the outer slope (14) of the annular skirt portion (8) and engaging with the seal.
From the above , according to the present reference example , not only can the sealing performance of the container be improved, that is, the notch portion (6) on the end wall of the cap portion peripheral wall and the notch portion of the neck portion of the container body neck base portion (12). (13) is the time when the screwing is completed, and the closing operation can be easily performed without depending on the user's sense. Even if the container is made of synthetic resin, it can be used for many years. Therefore, there is no problem of screwing due to wear of the screw thread, and one side of the lid always corresponds to one side without deviation from one side of the container body when the screwing is completed. It is possible to apply a design that captures this as one.
Furthermore, if the position of the notch part (6) provided in the cap part and the notch part (13) provided in the container body neck base build-up part is determined in the vicinity of the center of the side surface to be determined as the container body front, Even if the main body (5) and the lid body (2) are separated, it is clear which side is the front and is convenient for handling.
【Example】
An embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a perspective view showing a lid locking structure according to an embodiment of the present invention, in which male screws and female screws are omitted. (15) indicates a fitting groove, and the other numbers shown in the figure correspond to the first reference example .
The container body (5) in the present embodiment is a cylindrical body, and a grip portion (3) integrally formed with the cap portion (4) is formed in accordance with the shape and outer diameter. In addition, a circular fitting groove (15) is provided around the neck of the container body (9) in accordance with the peripheral wall of the cap (4) at the top of the container body, and a spiral bottom is formed in the fitting groove. Thus, one end was provided with a notch (13) at an acute angle.
The peripheral wall end portion of the cap portion (4) is formed with an acute angle in accordance with the shape of the notch portion (13), and in accordance with the shape of the spiral groove bottom portion of the fitting groove (15). Are molded.
In addition, although an annular skirt portion, a male screw, a female screw, and the like are not shown, their configuration and structure are the same as those in the first reference example .
Even in the structure shown in the present embodiment, the reliability of the lid closing operation and the effect that one region of the gripping part and one region of the container body always correspond can be obtained as in the first reference example. . Further, in the first reference example described above, both the notches are formed at right angles, but by forming them at an acute angle as in this embodiment, the screwing is completed more reliably.
And when screwing with a cover body and a container main body is completed by a present Example, since a notch part will fit in a fitting groove | channel (15), when the holding | grip part (3) is made transparent, it is clear. Design.
[Reference Example 2]
A second reference example will be described with reference to FIG.
FIG. 6 is a schematic diagram for explaining a lid locking structure showing a second reference example . (16) is the front end surface of the male screw on the container opening side, (17) is the upper bottom side end groove surface of the female screw, and the other numbers in the figure correspond to the same as in the first reference example. . Since FIG. 6 is a schematic diagram showing the structures and shapes of (16) and (17), some male screws and female screws are omitted.
The front end (16) on the opening side of the male screw is formed into a male screw with a surface orthogonal to the screw thread, and the top groove on the upper bottom side of the female screw provided in the cap portion is formed to have a surface orthogonal to the screw thread. Stand up and finish the female screw groove. With this structure, the front end of the male screw (10) of the container body neck (9) is fitted into the female screw groove of the cap (4), the screwing is advanced, and finally the front end surface of the male screw on the container opening side. The screwing is completed when (16) contacts the top bottom groove surface (17) of the female screw.
If the positions where the male screw front end surface (16) and female screw front end groove surface (17) are provided correspond to predetermined side surfaces, when the screwing is completed, a region of the gripping portion and a predetermined region of the container body are always provided. It becomes possible to make it correspond.
Further, the sealing performance can be improved by providing the annular skirt portion of the cap portion together with the structure shown in the present reference example .
[Reference Example 3]
A third reference example will be described with reference to FIG.
FIG. 7 is a schematic diagram for explaining a lid locking structure showing a third reference example . 7 is a schematic diagram showing the state of engagement between the lid (2a) and the container main body (1), and therefore, the male neck and the female screw including the container neck are omitted. . (2a) is a lid, (4a) is a transparent cap, (18) is a fitting hole, (19) is a locking projection provided on the lid (2a), and (20) is provided on the lid (2a). (21) is a locking projection provided on the container (1), (22) is a locking recess provided on the container (1), and the other numbers in the figure are those of the first reference example . It corresponds similarly.
In this reference example , the lid (2a) and the transparent cap (4a) are configured separately, and the lid (2a) is provided with a fitting hole (10) for fitting with the transparent cap (4a). And it has a latching means which a lid (3a) and a container main body (1) latch.
The transparent cap (4a) is screwed onto the container neck, and then the lid (2a) and the container main body (1) are connected to the locking projection (19) provided on the lid (2a) and the container main body (1). The provided locking recess (22) is also used to lock the locking recess (20) provided in the lid (2a) and the locking projection (21) provided in the container body (1). .
7 is a schematic sectional view showing a fitting state of the container body (1), the transparent cap (4a), and the lid (2a). As shown in FIG. 7, the transparent cap (4a) And the lid (2a) are configured to be flush with each other.
The container-side locking means (21) and (22) may be provided around the container as shown in the middle diagram of FIG.
According to the configuration of this reference example , since the transparent cap is covered with the lid, there is little possibility of loosening, and since the cap is transparent, the mixed state of the contents can be easily confirmed without opening the cap. Furthermore, the engagement between the lid and the container body is ensured by the locking means, which is preferable.
[Reference Example 4]
A fourth reference example will be described with reference to FIG.
FIG. 8 is a schematic illustration of a lid locking structure showing a fourth reference example . 8 is a schematic diagram showing the state of engagement between the lid (2a) and the transparent cap (4a), and therefore, the male neck and the female screw are omitted from the container neck. . (23) is a locking projection provided on the lid (2a), (24) is a locking recess provided on the transparent cap (4a), and the other numbers shown in the figure correspond to the previous reference example. Is.
This reference example relates to the invention of a variation of the third reference example ,
As shown in the uppermost drawing of FIG. 8, the fitting hole (18) is given a width, and four locking projections (23) are provided on the side wall of the fitting hole (18). As shown in the middle figure, a locking recess (24) is provided in the transparent cap (4a) so as to correspond to the locking projection (23). As shown in the lowermost drawing of FIG. 8, the transparent cap (4a) and the lid (2a) are configured to be flush with each other in this reference example .
Even with the configuration according to this reference example , the mixed state of the contents can be easily confirmed without opening the cap, and since the lid and the transparent cap are engaged, a special processing to the container body (1) is possible. It is unnecessary.
[Industrial applicability]
As described above, according to the present invention, it is possible to accurately and easily recognize the completion of the closing operation because both the cutout portions formed on the container body side and the cap portion are substantially in contact with each other while improving the sealing performance. Even in a container made of screws, there is no problem of screwing due to wear of the screw thread associated with long-term use.
In addition, one side or one region of the lid body and one side surface or one region of the container main body do not deviate from each other when screwing is completed, and the lid body and the container main body are regarded as one body. Design can be applied.

Claims

A lid locking structure for a sealed container having a lid threadably engaged with the container neck,
The lid body is composed of a transparent cross-section concave gripping portion and a cap portion provided inside the gripping center,
The lid is harder than the container body,
A circular fitting groove is provided around the neck of the container body to match the peripheral wall of the cap at the top of the container body.
Furthermore, a spiral bottom is formed in the fitting groove, a notch is provided at an acute angle at one end,
The peripheral wall end portion of the cap portion has a structure in which the notch portion is molded at an acute angle according to the notch portion, and is shaped according to the shape of the spiral groove bottom portion of the fitting groove,
further,
The cap part inside upper bottom has an annular skirt part having a tapered inclination extending toward the container opening part,
The outer periphery of the annular skirt portion engages with the inner periphery of the container body opening, the container body neck peripheral wall flexes and deforms radially outward along the inclination of the annular skirt portion, A notch formed at the end of the peripheral wall is accommodated in the fitting groove and comes into contact with the notch provided in the fitting groove, and the screwing between the cap and the container body neck is completed. It is characterized by
And it is set as the structure which reinforced the above-mentioned grasping part inner wall and cap part with a support piece,
A lid locking structure for a sealed container in which one region of the gripping portion always corresponds to a predetermined region of the container body when the lid is closed.