JP3207937U

JP3207937U - Food container

Info

Publication number: JP3207937U
Application number: JP2016004750U
Authority: JP
Inventors: 清隆河合
Original assignee: Sekisui Kasei Co Ltd
Current assignee: Sekisui Kasei Co Ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2016-12-08
Anticipated expiration: 2026-09-29

Abstract

【課題】蓋が嵌り易い食品容器を提供する。【解決手段】食品容器は、容器本体と、容器本体に嵌合する蓋とを備える。容器本体は、内周面を有する周壁を有する。蓋は、容器本体の周壁に嵌合する嵌合部を有する。嵌合部は、嵌合方向ＤＡにおける離間側ＳＡに向かって延びる外周壁を有する。外周壁は、容器本体の周壁の内周面の全周にわたって接触する外周面３７ｂと、嵌合方向ＤＡに沿って延びる溝４１とを有する。溝４１の第１端４１ａは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒまで延び、溝４１の第２端４１ｂは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒと離間側ＳＡの端３７ｂｓとの間に配置される。少なくとも溝４１の第２端４１ｂ側の端部４２は、周方向の幅長について、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成されている。【選択図】図７Provided is a food container in which a lid can be easily fitted. A food container includes a container main body and a lid fitted to the container main body. The container body has a peripheral wall having an inner peripheral surface. A lid | cover has a fitting part fitted to the surrounding wall of a container main body. The fitting portion has an outer peripheral wall extending toward the separation side SA in the fitting direction DA. The outer peripheral wall has an outer peripheral surface 37b that contacts the entire inner peripheral surface of the peripheral wall of the container body, and a groove 41 that extends along the fitting direction DA. The first end 41a of the groove 41 extends to the end 37br of the fitting side DA in the fitting direction DA on the outer peripheral surface 37b, and the second end 41b of the groove 41 is the fitting side SB of the fitting direction DA on the outer peripheral surface 37b. Between the first end 37br and the second end 37bs on the separation side SA. At least the end portion 42 on the second end 41b side of the groove 41 is configured to taper toward the separation side SA in the fitting direction DA with respect to the width in the circumferential direction. [Selection] Figure 7

Description

本考案は、蓋と容器本体とが嵌合する食品容器に関する。 The present invention relates to a food container in which a lid and a container body are fitted.

食品容器として、特許文献１に記載の技術が知られている。
特許文献１に記載の食品容器は、蓋（同文献では蓋体）と、容器本体とを備える。蓋の嵌合部は、容器本体の被嵌合部に嵌る。蓋の嵌合部と容器本体の被嵌合部とは、両者の嵌合時、食品容器内の液体を漏らさないように密着する。 As a food container, a technique described in Patent Document 1 is known.
The food container described in Patent Literature 1 includes a lid (a lid body in the same literature) and a container body. The fitting part of the lid fits into the fitted part of the container body. The fitting portion of the lid and the fitted portion of the container main body are in close contact with each other so as not to leak the liquid in the food container when the two are fitted.

特開２０１３−２０３４７４公報JP 2013-203474 A

ところで、容器本体に蓋を取り付けるとき、容器本体の開口部に蓋が嵌り難いことがある。本考案は、このような課題を解決する。 By the way, when attaching a cover to a container main body, a cover may be hard to fit in the opening part of a container main body. The present invention solves such problems.

（１）上記課題を解決する食品容器は、容器本体と、前記容器本体に嵌合する蓋とを備える食品容器であって、前記容器本体は、食品が収容される収容部と、前記収容部の周囲に設けられて内周面を有する周壁とを有し、前記蓋は、蓋本体部と、前記蓋本体部の周囲に設けられて前記周壁に嵌合する嵌合部とを有し、前記蓋の前記嵌合部は、嵌合方向における離間側に向かって延びる外周壁を有し、前記外周壁は、前記容器本体の前記周壁の前記内周面の全周にわたって接触する外周面と、前記嵌合方向に沿って延びる溝とを有し、前記溝の第１端は、前記外周面において前記嵌合方向の嵌合側の端まで延び、前記溝の第２端は、前記外周面において前記嵌合方向の嵌合側の端と離間側の端との間に配置され、少なくとも前記溝の前記第２端側の端部は、周方向の幅長について、前記嵌合方向の離間側に向かって先細りに構成されている。 (1) A food container that solves the above-described problem is a food container that includes a container main body and a lid that fits into the container main body, and the container main body includes a storage unit that stores food, and the storage unit. A peripheral wall having an inner peripheral surface provided around the lid, the lid has a lid main body portion, and a fitting portion provided around the lid main body portion and fitted to the peripheral wall, The fitting portion of the lid has an outer peripheral wall extending toward a separation side in the fitting direction, and the outer peripheral wall is in contact with an outer peripheral surface that is in contact with the entire inner peripheral surface of the peripheral wall of the container body. A groove extending along the fitting direction, and a first end of the groove extends to a fitting side end of the fitting direction on the outer peripheral surface, and a second end of the groove is the outer periphery. At least the second end of the groove disposed between the end on the mating side and the end on the separation side in the mating direction Ends of the the width length in the circumferential direction, and is configured to taper toward the spaced side of the fitting direction.

上記構成において、蓋の嵌合部の外周面に設けられている溝は、嵌合方向に沿って延びる。この溝の第２端は、外周面において嵌合方向の嵌合側の端と離間側の端との間に配置される。このため、蓋が容器本体に嵌合するとき、溝を通って空気が外部に排出されるため、蓋が円滑に押し込められる。また、溝の第２端側の端部は、周方向の幅長について、嵌合方向の離間側に向かって先細りに構成されているため、周方向の幅長が嵌合方向における一端から他端にわたって一定である溝に比べて、溝の第２端付近での、嵌合部の外周面と容器本体の内周面との接触面積が大きくなる。これによって接触面積が確保されるため、液漏れが効果的に抑制される。 The said structure WHEREIN: The groove | channel provided in the outer peripheral surface of the fitting part of a lid | cover extends along a fitting direction. The second end of the groove is disposed on the outer peripheral surface between the fitting side end and the separation side end in the fitting direction. For this reason, when the lid is fitted to the container body, air is discharged to the outside through the groove, so that the lid is pushed in smoothly. Further, since the end on the second end side of the groove is configured to taper toward the separation side in the fitting direction with respect to the width in the circumferential direction, the width in the circumferential direction is different from one end in the fitting direction. The contact area between the outer peripheral surface of the fitting portion and the inner peripheral surface of the container body in the vicinity of the second end of the groove is larger than that of the groove that is constant over the end. As a result, the contact area is ensured, so that liquid leakage is effectively suppressed.

（２）上記食品容器において、前記蓋の前記外周面は、複数の面部と、前記各面部の間に配置されて前記面部よりも曲率が高い複数の曲面部とを有し、前記溝は、前記曲面部に設けられる。 (2) In the food container, the outer peripheral surface of the lid includes a plurality of surface portions, and a plurality of curved surface portions that are disposed between the surface portions and have a higher curvature than the surface portions, and the groove includes: Provided on the curved surface portion.

蓋と容器本体とが嵌合した食品容器において、曲率が高い曲面部は、他の面部よりも変形し難く、蓋の嵌合部の外周面と容器本体の周壁の内周面との密着状態が解除され難い。上記構成では、このような曲面部に溝が設けられていることから、溝の存在によって液漏れが生じるといったことが効果的に抑制される。 In a food container in which the lid and the container main body are fitted, the curved surface portion having a high curvature is less likely to be deformed than the other surface portions, and the outer peripheral surface of the lid fitting portion and the inner peripheral surface of the peripheral wall of the container main body are in close contact with each other Is difficult to cancel. In the above configuration, since the groove is provided in such a curved surface portion, occurrence of liquid leakage due to the presence of the groove is effectively suppressed.

（３）上記食品容器において、前記蓋の前記外周面は、互いに対向する一対の面部と、前記一対の面部の並びの方向に対して交差する方向で互いに対向する一対の面部と、４つの前記面部の間を繋ぐ４つの曲面部とを有し、前記溝は、４つの前記曲面部の少なくとも２つに設けられる。これにより、蓋が斜めに嵌合することにより、１つの溝が封鎖されるときでも、他方の溝により内部空間と外部とが連通するため、蓋が斜めになるときであっても蓋を押し込み易い。 (3) In the food container, the outer peripheral surface of the lid includes a pair of surface portions opposed to each other, a pair of surface portions opposed to each other in a direction intersecting a direction in which the pair of surface portions are arranged, and the four Four curved surface portions connecting between the surface portions, and the groove is provided in at least two of the four curved surface portions. As a result, the lid fits diagonally, so that even when one groove is sealed, the inner space communicates with the outside through the other groove, so the lid is pushed in even when the lid is inclined. easy.

（４）上記食品容器において、前記蓋の前記外周壁は、前記嵌合方向の嵌合側に傾斜部を有し、前記溝の前記第１端は、前記傾斜部において開口する。
この構成によれば、溝の第１端側の開口面積が大きくなる。これにより、蓋と容器本体との嵌合において、食品容器内の空気が排出され易くなる。 (4) In the food container, the outer peripheral wall of the lid has an inclined portion on the fitting side in the fitting direction, and the first end of the groove opens at the inclined portion.
According to this configuration, the opening area on the first end side of the groove is increased. Thereby, in the fitting of the lid and the container body, the air in the food container is easily discharged.

（５）上記食品容器において、前記溝は、前記嵌合方向の嵌合側の端を基点として、前記嵌合方向の離間側に向かって前記外周面の１／４以上３／４以下のところまで延びる。
この構成によれば、蓋と容器本体との嵌合中において、嵌合方向における押し込み距離の少なくとも１／４までは食品容器内の空気の排出により蓋の押し込みが円滑に進むようになる。また、蓋と容器本体とが嵌合した状態で、嵌合部の外周面と容器本体の内周面との間の接触部分でかつ溝を含む領域では、嵌合方向における少なくとも１／４の部分で、嵌合部の外周面と容器本体の内周面とが接触する。 (5) In the food container, the groove may be ¼ or more and ¾ or less of the outer peripheral surface from the end on the fitting side in the fitting direction to the separation side in the fitting direction. Extend to.
According to this configuration, during the fitting between the lid and the container main body, the pushing of the lid smoothly proceeds by discharging the air in the food container up to at least 1/4 of the pushing distance in the fitting direction. Further, in a state where the lid and the container main body are fitted to each other, the contact portion between the outer peripheral surface of the fitting portion and the inner peripheral surface of the container main body and the region including the groove is at least 1/4 of the fitting direction. At the portion, the outer peripheral surface of the fitting portion and the inner peripheral surface of the container main body come into contact with each other.

（６）上記食品容器において、前記容器本体の少なくとも前記内周面及び前記蓋の少なくとも前記外周面のうち少なくとも一方は、２軸延伸樹脂により構成される。
２軸延伸樹脂と非延伸樹脂との接触または２軸延伸樹脂同士の接触によれば、非延伸樹脂同士の接触に比べて摩擦力（グリップ力）が高くなる。このため、上記構成によれば、内周面と外周面との間からの液漏れが効果的に抑制される。 (6) In the food container, at least one of at least the inner peripheral surface of the container body and at least the outer peripheral surface of the lid is made of biaxially stretched resin.
According to the contact between the biaxially stretched resin and the non-stretched resin or the contact between the biaxially stretched resins, the frictional force (grip force) is higher than that between the unstretched resins. For this reason, according to the said structure, the liquid leak from between an internal peripheral surface and an outer peripheral surface is suppressed effectively.

（７）上記課題を解決する食品容器は、容器本体と、前記容器本体に嵌合する蓋とを備える食品容器であって、前記容器本体は、食品が収容される収容部と、前記収容部の周囲に設けられる周壁とを有し、前記蓋は、蓋本体部と、前記蓋本体部の周囲に設けられて前記周壁に嵌合する嵌合部とを有し、前記嵌合部は、嵌合方向における離間側に向かって延びる外周壁を有し、前記容器本体の前記周壁は、前記外周壁の外周面の全周にわたって接触する内周面と、前記嵌合方向に沿って延びる溝とを有し、前記溝の第１端は、前記内周面において前記嵌合方向の離間側の端まで延び、前記溝の第２端は、前記内周面において前記嵌合方向の嵌合側の端と離間側の端との間に配置され、少なくとも前記溝の前記第２端側の端部は、周方向の幅長について、前記嵌合方向の嵌合側に向かって先細りに構成されている。 (7) A food container that solves the above problem is a food container that includes a container main body and a lid that fits into the container main body, and the container main body includes a storage unit that stores food, and the storage unit. A peripheral wall provided around the lid body, and the lid includes a lid main body part and a fitting part provided around the lid main body part and fitted to the peripheral wall, An outer peripheral wall extending toward the separation side in the fitting direction, wherein the peripheral wall of the container body is an inner peripheral surface that is in contact with the entire outer peripheral surface of the outer peripheral wall, and a groove extending along the fitting direction. And the first end of the groove extends to the end of the inner circumferential surface on the side in the fitting direction, and the second end of the groove fits in the fitting direction on the inner circumferential surface. Disposed between the end on the side and the end on the separation side, and at least the end portion on the second end side of the groove has a width in the circumferential direction. There are, is configured tapering toward the mating side of the fitting direction.

上記構成において、容器本体の周壁の内周面に設けられている溝は、嵌合方向に沿って延びる。この溝の第２端は、内周面において嵌合方向の嵌合側の端と離間側の端との間に配置される。このため、蓋が容器本体に嵌合するとき、溝を通って空気が外部に排出されるため、蓋が円滑に押し込められる。また、溝の第２端側の端部は、周方向の幅長について、嵌合方向の嵌合側に向かって先細りに構成されてため、周方向の幅長が嵌合方向における一端から他端にわたって一定である溝に比べて、溝の第２端付近での、嵌合部の外周面と容器本体の内周面との接触面積が大きくなる。これによって接触面積が確保されるため、液漏れを効果的に抑制される。 The said structure WHEREIN: The groove | channel provided in the internal peripheral surface of the surrounding wall of a container main body extends along a fitting direction. The second end of the groove is disposed on the inner peripheral surface between the fitting side end and the separation side end in the fitting direction. For this reason, when the lid is fitted to the container body, air is discharged to the outside through the groove, so that the lid is pushed in smoothly. Further, since the end on the second end side of the groove is configured to taper toward the fitting side in the fitting direction with respect to the width in the circumferential direction, the width in the circumferential direction is different from one end in the fitting direction. The contact area between the outer peripheral surface of the fitting portion and the inner peripheral surface of the container body in the vicinity of the second end of the groove is larger than that of the groove that is constant over the end. As a result, the contact area is ensured, so that liquid leakage is effectively suppressed.

（８）上記食品容器において、前記溝は、前記嵌合方向の離間側の端を基点として、前記嵌合方向の嵌合側に向かって前記内周面の１／４以上３／４以下のところまで延びる。
この構成によれば、蓋と容器本体との嵌合中において、嵌合方向における押し込み距離の少なくとも１／４までは食品容器内の空気の排出により蓋の押し込みが円滑に進むようになる。また、蓋と容器本体とが嵌合した状態で、嵌合部の外周面と容器本体の内周面との間の接触部分でかつ溝を含む領域では、嵌合方向における少なくとも１／４の部分で、嵌合部の外周面と容器本体の内周面とが接触する。 (8) In the food container, the groove may be ¼ or more and ¾ or less of the inner peripheral surface toward the fitting side in the fitting direction with the end on the separation side in the fitting direction as a base point. It extends to the point.
According to this configuration, during the fitting between the lid and the container main body, the pushing of the lid smoothly proceeds by discharging the air in the food container up to at least 1/4 of the pushing distance in the fitting direction. Further, in a state where the lid and the container main body are fitted to each other, the contact portion between the outer peripheral surface of the fitting portion and the inner peripheral surface of the container main body and the region including the groove is at least 1/4 of the fitting direction At the portion, the outer peripheral surface of the fitting portion and the inner peripheral surface of the container main body come into contact with each other.

上記食品容器の蓋体は、容器本体に嵌め込められ易い。 The lid of the food container is easily fitted into the container body.

第１実施形態について、食品容器の断面図。Sectional drawing of a food container about 1st Embodiment. 第１実施形態について、下からみた蓋の平面図。The top view of the lid seen from the bottom about a 1st embodiment. 第１実施形態について、図２のＡ−Ａ線に沿う、蓋の断面図。Sectional drawing of a lid | cover in alignment with AA of FIG. 2 about 1st Embodiment. 第１実施形態について、図３のＣ部の拡大平面図。The enlarged plan view of the C section of Drawing 3 about a 1st embodiment. 第１実施形態について、蓋の嵌合部と容器本体の周壁とが嵌合し始めた状態の断面図。Sectional drawing of the state which the fitting part of the lid | cover and the surrounding wall of the container main body started fitting about 1st Embodiment. 第１実施形態について、蓋の嵌合部と容器本体の周壁との嵌合状態を示す断面図。Sectional drawing which shows the fitting state of the fitting part of a lid | cover and the surrounding wall of a container main body about 1st Embodiment. 図５の矢印Ａからみた蓋の溝の正面図。The front view of the groove | channel of the lid | cover seen from the arrow A of FIG. 図５の矢印Ａからみた蓋の溝の第１変形例を示す正面図。The front view which shows the 1st modification of the groove | channel of the lid seen from the arrow A of FIG. 図５の矢印Ａからみた蓋の溝の第２変形例を示す正面図。The front view which shows the 2nd modification of the groove | channel of the lid seen from the arrow A of FIG. 図５の矢印Ａからみた蓋の溝の第３変形例を示す正面図。The front view which shows the 3rd modification of the groove | channel of the lid seen from the arrow A of FIG. 第２実施形態について、蓋の嵌合部と容器本体の周壁とが嵌合し始めた状態の断面図。Sectional drawing of the state which the fitting part of the lid | cover and the surrounding wall of the container main body started fitting about 2nd Embodiment. 第２実施形態について、蓋の嵌合部と容器本体の周壁との嵌合状態を示す断面図。Sectional drawing which shows the fitting state of the fitting part of a lid | cover and the surrounding wall of a container main body about 2nd Embodiment. 図１１の矢印Ｂからみた容器本体の溝の正面図。The front view of the groove | channel of the container main body seen from the arrow B of FIG. 図１１の矢印Ｂからみた容器本体の溝の第１変形例を示す正面図。The front view which shows the 1st modification of the groove | channel of the container main body seen from the arrow B of FIG. 図１１の矢印Ｂからみた容器本体の溝の第２変形例を示す正面図。The front view which shows the 2nd modification of the groove | channel of the container main body seen from the arrow B of FIG. 図１１の矢印Ｂからみた容器本体の溝の第３変形例を示す正面図。The front view which shows the 3rd modification of the groove | channel of the container main body seen from the arrow B of FIG.

＜第１実施形態＞
図１〜図１０を参照して、第１実施形態に係る食品容器について説明する。なお、図１では、太線が断面を示す。
食品容器１は、食品を収容する。食品容器１に収容される食品は、限定されない。本実施形態に係る食品容器１は、密封性が高いため、液状物を含む食品の容器本体として好適に用いられ得る。例えば、液状物を含む食品として、ソースが付いたパスタ、ソースがつけられたオムレツ、ソースがつけられたチャーハン、ソースがつけられたサラダ、おでん、煮物等が挙げられる。 <First Embodiment>
With reference to FIGS. 1-10, the food container which concerns on 1st Embodiment is demonstrated. In FIG. 1, the bold line indicates a cross section.
The food container 1 contains food. The food stored in the food container 1 is not limited. Since the food container 1 which concerns on this embodiment has high sealing performance, it can be used suitably as a container main body of the foodstuff containing a liquid substance. For example, foods containing liquids include pasta with sauce, omelette with sauce, fried rice with sauce, salad with sauce, oden, boiled food and the like.

以下の説明では、便宜上、食品容器１を水平な面に置いたときの食品容器１の姿勢を基準姿勢として、食品容器１の上下方向を定義する。食品容器１の上下方向は、食品容器１が水平な面に置かれた状態（すなわち基準姿勢での状態）で、鉛直方向に沿う方向として定義される。食品容器１の上とは、蓋側であり、食品容器１の下とは、容器本体側である。容器本体及び蓋それぞれについても同様に方向が定義される。また、後述する嵌合方向ＤＡとは、容器本体に蓋を嵌め込むときの方向を示し、基準姿勢では、嵌合方向ＤＡと上下方向とは一致する。嵌合方向ＤＡにおいて離間側ＳＡとは、容器本体から蓋を外す方向を示し、基準姿勢では、上側になる。嵌合方向ＤＡにおいて嵌合側ＳＢとは、容器本体に蓋を嵌め込むときの方向を示し、基準姿勢では、下側になる。 In the following description, for convenience, the vertical direction of the food container 1 is defined with the posture of the food container 1 when the food container 1 is placed on a horizontal surface as the reference posture. The vertical direction of the food container 1 is defined as a direction along the vertical direction in a state where the food container 1 is placed on a horizontal surface (that is, a state in a reference posture). Above the food container 1 is the lid side, and below the food container 1 is the container body side. The direction is similarly defined for each of the container body and the lid. In addition, the fitting direction DA described later indicates a direction when the lid is fitted into the container body, and the fitting direction DA and the vertical direction coincide with each other in the reference posture. In the fitting direction DA, the separation side SA indicates a direction in which the lid is removed from the container body, and is on the upper side in the reference posture. In the fitting direction DA, the fitting side SB indicates a direction when the lid is fitted into the container main body, and is the lower side in the reference posture.

食品容器１は、容器本体１０と、容器本体１０に嵌合する蓋３０とを備える。
容器本体１０は、食品が収容される収容部１１と、収容部１１の周囲に設けられて内周面１５ａを有する周壁１５とを有する。好ましくは、容器本体１０は、フランジ部１６を有する。フランジ部１６は周壁１５の周囲に設けられる。 The food container 1 includes a container body 10 and a lid 30 that fits into the container body 10.
The container main body 10 includes a storage portion 11 in which food is stored, and a peripheral wall 15 provided around the storage portion 11 and having an inner peripheral surface 15a. Preferably, the container body 10 has a flange portion 16. The flange portion 16 is provided around the peripheral wall 15.

収容部１１は、底面部１２と、底面部１２の周囲に設けられる台足部１３と、台足部１３の周囲に設けられる側面部１４とを有する。
収容部１１の底面部１２は、台足部１３よりも上側に位置する。台足部１３は、テーブル等に食品容器１が置かれるときに、テーブル等の載置面に接触する。側面部１４は、台足部１３に繋がっており上方に向かって外側に広がるように延びる。 The accommodating portion 11 includes a bottom surface portion 12, a foot portion 13 provided around the bottom surface portion 12, and a side surface portion 14 provided around the foot portion 13.
The bottom surface portion 12 of the accommodating portion 11 is positioned above the foot portion 13. When the food container 1 is placed on a table or the like, the pedestal portion 13 contacts the placement surface of the table or the like. The side surface part 14 is connected to the foot part 13 and extends so as to spread outward.

周壁１５は、側面部１４の上端から上方に延びる。フランジ部１６は、周壁１５の上端から外側に延びる。
周壁１５は、蓋３０の嵌合部３４（後述参照）が嵌め込められるように構成されている。周壁１５の内周面１５ａと、蓋３０の嵌合部３４の外周面３７ｂとは、平面視において、同じ形状を有する。蓋３０の嵌合部３４が容器本体１０の周壁１５に嵌め込められると、蓋３０の嵌合部３４の外周面３７ｂが容器本体１０の周壁１５の内周面１５ａに接触する。内周面１５ａは、平面視で、円形または楕円形、長円形、またはこれらに類似した形状に構成される。 The peripheral wall 15 extends upward from the upper end of the side surface portion 14. The flange portion 16 extends outward from the upper end of the peripheral wall 15.
The peripheral wall 15 is configured so that a fitting portion 34 (see below) of the lid 30 can be fitted therein. The inner peripheral surface 15a of the peripheral wall 15 and the outer peripheral surface 37b of the fitting portion 34 of the lid 30 have the same shape in plan view. When the fitting part 34 of the lid 30 is fitted into the peripheral wall 15 of the container main body 10, the outer peripheral surface 37 b of the fitting part 34 of the lid 30 contacts the inner peripheral surface 15 a of the peripheral wall 15 of the container main body 10. The inner peripheral surface 15a is configured in a circular shape, an oval shape, an oval shape, or a similar shape in plan view.

容器本体１０は、樹脂により構成される。容器本体１０において少なくとも内周面１５ａに樹脂フィルムが積層される。樹脂フィルムの好適な例として、２軸延伸樹脂が挙げられる。容器本体１０を構成するための樹脂シートの例として、非発泡ポリプロピレン系樹脂シートに２軸延伸ポリプロピレン系樹脂フィルムが積層されたシート、発泡ポリプロピレン系樹脂シートに２軸延伸ポリプロピレン系樹脂フィルムが積層されたシート、非発泡ポリスチレン系樹脂シートに２軸延伸ポリスチレン系樹脂フィルムが積層されたシート、発泡ポリスチレン系樹脂シートに２軸延伸ポリスチレン系樹脂フィルムが積層されたシート、発泡ポリエチレンテレフタレート系樹脂シートに２軸延伸ポリエチレンテレフタレート系樹脂フィルムが積層されたシート、非発泡ポリエチレンテレフタレート系樹脂シートに２軸延伸ポリエチレンテレフタレート系樹脂フィルムが積層されたシート、等が挙げられる。上記の非発泡ポリプロピレン系樹脂シート、非発泡ポリスチレン系樹脂シートにはフィラーが含有され得る。 The container body 10 is made of resin. In the container main body 10, a resin film is laminated on at least the inner peripheral surface 15a. A suitable example of the resin film is a biaxially stretched resin. As an example of a resin sheet for constituting the container body 10, a sheet in which a biaxially stretched polypropylene resin film is laminated on a non-foamed polypropylene resin sheet, and a biaxially stretched polypropylene resin film is laminated on a foamed polypropylene resin sheet. 2 sheets, a sheet in which a biaxially stretched polystyrene resin film is laminated on a non-foamed polystyrene resin sheet, a sheet in which a biaxially stretched polystyrene resin film is laminated on a foamed polystyrene resin sheet, and a foamed polyethylene terephthalate resin sheet. Examples thereof include a sheet in which an axially stretched polyethylene terephthalate resin film is laminated, a sheet in which a biaxially stretched polyethylene terephthalate resin film is laminated on a non-foamed polyethylene terephthalate resin sheet, and the like. The non-foamed polypropylene resin sheet and the non-foamed polystyrene resin sheet may contain a filler.

図２〜図６を参照して、蓋３０の構造を説明する。
蓋３０は、蓋本体部３１と、嵌合部３４とを有する。蓋本体部３１は、蓋３０が容器本体１０に嵌め込められたときに容器本体１０の底面部１２の上に配置される平面部３２と、平面部３２の周囲に配置される側面部３３とを有する。側面部３３は、平面部３２から下方に向かって外側に拡張しながら延びる。 The structure of the lid 30 will be described with reference to FIGS.
The lid 30 includes a lid main body portion 31 and a fitting portion 34. The lid main body portion 31 includes a flat surface portion 32 disposed on the bottom surface portion 12 of the container main body 10 when the lid 30 is fitted into the container main body 10, and a side surface portion 33 disposed around the flat surface portion 32. Have The side surface portion 33 extends while expanding outward from the flat surface portion 32.

蓋３０は、さらに、嵌合部３４の周囲に設けられて外側に延びる延長部３８と、延長部３８の周囲で互いに離れた４箇所から外側に突出する取っ手３９とを備える。取っ手３９は、手で摘み易いように、蓋３０が容器本体１０に嵌め込められた状態で容器本体１０のフランジ部１６から離間するように構成されてもよい。 The lid 30 further includes an extension portion 38 provided around the fitting portion 34 and extending outward, and a handle 39 projecting outward from four locations separated from each other around the extension portion 38. The handle 39 may be configured to be separated from the flange portion 16 of the container body 10 in a state where the lid 30 is fitted in the container body 10 so that the handle 39 can be easily picked by hand.

嵌合部３４は、容器本体１０の周壁１５に嵌合する。嵌合部３４は、蓋本体部３１の周囲に設けられる。例えば、嵌合部３４は、側面部３３の周囲に設けられて側面部３３の下端から下方に延びる内周壁３５と、内周壁３５から外側に延びる横壁３６と、横壁３６から延びて内周壁３５よりも外側に配置される外周壁３７とを備える（図３参照）。好ましくは、横壁３６には、上方に突出する凸部４０が設けられる。この凸部４０は、複数の蓋３０が重ねられる場合、重ねられた一方の蓋３０の嵌合部３４が他方の蓋３０の嵌合部３４に嵌り込むことを抑制し、積み重ねられた蓋３０を一つずつ分離し易いようにする。 The fitting portion 34 is fitted to the peripheral wall 15 of the container body 10. The fitting part 34 is provided around the lid main body part 31. For example, the fitting portion 34 is provided around the side surface portion 33 and extends downward from the lower end of the side surface portion 33, a horizontal wall 36 extending outward from the inner peripheral wall 35, and an inner peripheral wall 35 extending from the horizontal wall 36. And an outer peripheral wall 37 disposed on the outer side (see FIG. 3). Preferably, the lateral wall 36 is provided with a convex portion 40 protruding upward. When the plurality of lids 30 are overlapped, the convex portion 40 suppresses the fitting portion 34 of one overlapped lid 30 from fitting into the fitting portion 34 of the other lid 30, and the stacked lids 30. Make it easy to separate the one by one.

図３に示されるように、外周壁３７は、嵌合方向ＤＡにおける離間側ＳＡ（すなわち上側）に向かって延びる。外周壁３７は、好ましくは、嵌合方向ＤＡにおける嵌合側ＳＢ（すなわち下側）において、嵌合側ＳＢに向かって内側に傾斜する傾斜部３７ａを有する。この構成により、嵌合部３４が、容器本体１０の周壁１５内に嵌め込められ易くなる。 As shown in FIG. 3, the outer peripheral wall 37 extends toward the separation side SA (that is, the upper side) in the fitting direction DA. The outer peripheral wall 37 preferably has an inclined portion 37a inclined inward toward the fitting side SB on the fitting side SB (that is, the lower side) in the fitting direction DA. With this configuration, the fitting portion 34 is easily fitted into the peripheral wall 15 of the container body 10.

外周壁３７は、容器本体１０の周壁１５の内側に嵌め込められる。外周壁３７の外周面３７ｂは、平面視で、円形または楕円形、長円形、またはこれらに類似した形状に構成される。本実施形態では、外周面３７ｂは、互いに対向する一対の面部３７ｘと、この一対の面部３７ｘの並びの方向に対して交差する方向で互いに対向する一対の面部３７ｙと、これら面部３７ｘ，３７ｙを繋ぐ４つの曲面部３７ｒとを有する。曲面部３７ｒは、４つの面部３７ｘ，３７ｙよりも曲率が高い。 The outer peripheral wall 37 is fitted inside the peripheral wall 15 of the container body 10. The outer peripheral surface 37b of the outer peripheral wall 37 is configured in a circular shape, an elliptical shape, an oval shape, or a similar shape in plan view. In the present embodiment, the outer peripheral surface 37b includes a pair of surface portions 37x facing each other, a pair of surface portions 37y facing each other in a direction intersecting the direction in which the pair of surface portions 37x are arranged, and the surface portions 37x and 37y. And four curved surface portions 37r to be connected. The curved surface portion 37r has a higher curvature than the four surface portions 37x and 37y.

外周壁３７の外周面３７ｂは、容器本体１０の周壁１５の内周面１５ａの全周にわたって接触する。外周壁３７の外周面３７ｂには、嵌合方向ＤＡに沿って延びる溝４１が設けられている。好ましくは、溝４１は、外周面３７ｂの曲面部３７ｒに設けられる。 The outer peripheral surface 37 b of the outer peripheral wall 37 contacts the entire periphery of the inner peripheral surface 15 a of the peripheral wall 15 of the container body 10. A groove 41 extending along the fitting direction DA is provided on the outer peripheral surface 37 b of the outer peripheral wall 37. Preferably, the groove 41 is provided in the curved surface portion 37r of the outer peripheral surface 37b.

溝４１の第１端４１ａは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒまで延びる（図７参照）。外周壁３７に傾斜部３７ａが設けられている場合、溝４１の第１端４１ａは、傾斜部３７ａで開口する。外周壁３７に傾斜部３７ａが設けられていない場合、溝４１の第１端４１ａは、横壁３６で開口する。 The first end 41a of the groove 41 extends to the end 37br of the fitting side SB in the fitting direction DA on the outer peripheral surface 37b (see FIG. 7). When the inclined portion 37a is provided on the outer peripheral wall 37, the first end 41a of the groove 41 opens at the inclined portion 37a. When the inclined portion 37 a is not provided on the outer peripheral wall 37, the first end 41 a of the groove 41 opens at the lateral wall 36.

溝４１において第１端４１ａの反対側の第２端４１ｂは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒと離間側ＳＡの端３７ｂｓとの間に配置される。溝４１は、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒを基点として、嵌合方向ＤＡの離間側ＳＡに向かって外周面３７ｂの１／４以上３／４以下のところまで延びる。すなわち、溝４１の第２端４１ｂは、嵌合方向ＤＡにおいて外周面３７ｂの幅長ＬＡの１／４以上３／４以下のところに位置する。 The second end 41b opposite to the first end 41a in the groove 41 is disposed between the end 37br on the fitting side SB in the fitting direction DA and the end 37bs on the separation side SA on the outer peripheral surface 37b. The groove 41 starts from the end 37br of the mating side SB in the mating direction DA on the outer circumferential surface 37b as a base point and extends from 1/4 to 3/4 of the outer circumferential surface 37b toward the separation side SA in the mating direction DA. Extend. That is, the second end 41b of the groove 41 is located at a position that is not less than 1/4 and not more than 3/4 of the width length LA of the outer peripheral surface 37b in the fitting direction DA.

また、少なくとも溝４１の第２端４１ｂ側の端部４２は、周方向の幅長ＬＸについて、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成される（図７参照）。 Further, at least the end portion 42 on the second end 41b side of the groove 41 is configured to taper toward the separation side SA in the fitting direction DA with respect to the circumferential width length LX (see FIG. 7).

蓋３０は、樹脂により構成される。例えば、蓋３０は、ポリスチレン樹脂、非結晶性ポリエチレンテレフタレート、ポリプロピレン等により構成される。好ましくは、蓋３０において少なくとも外周面３７ｂは２軸延伸樹脂を含む。蓋３０は、２軸延伸樹脂が積層された樹脂シートにより、または２軸延伸樹脂製シートにより構成されることが好ましい。蓋３０を構成する好適な樹脂シートの例として、２軸延伸ポリスチレン系樹脂シート（一層構造）、２軸延伸ポリプロピレン系樹脂シート（一層構造）、発泡ポリプロピレン系樹脂シートに２軸延伸ポリプロピレン系樹脂フィルムが積層されたシート、無延伸ポリプロピレン系樹脂シートに２軸延伸ポリプロピレン系樹脂フィルムが積層されたシート、等が挙げられる。 The lid 30 is made of resin. For example, the lid 30 is made of polystyrene resin, amorphous polyethylene terephthalate, polypropylene, or the like. Preferably, at least the outer peripheral surface 37b of the lid 30 includes biaxially stretched resin. The lid 30 is preferably constituted by a resin sheet in which a biaxially stretched resin is laminated or a biaxially stretched resin sheet. As an example of a suitable resin sheet constituting the lid 30, a biaxially stretched polystyrene resin sheet (single layer structure), a biaxially stretched polypropylene resin sheet (single layer structure), a foamed polypropylene resin sheet and a biaxially stretched polypropylene resin film And a sheet in which a biaxially stretched polypropylene resin film is laminated on an unstretched polypropylene resin sheet.

図５及び図６を参照して、蓋３０が容器本体１０に嵌合するときの作用及び効果を説明する。嵌合し始めにおいては、蓋３０の嵌合部３４の一部が、容器本体１０の周壁１５に接触した状態になる。従来の蓋構造では、このとき、蓋３０と容器本体１０との嵌合により食品容器１の内部が密封され、食品容器１内の空気が外部に排出し難く、食品容器１内の空気が蓋３０の押し込みに対する抵抗となるため、蓋３０の嵌合が難しくなっている。蓋３０を押し込む力が弱いと、食品容器１内の空気の抵抗により、蓋３０が傾くことがある。このような場合は、嵌合作業のやり直しが強いられる。 With reference to FIG.5 and FIG.6, an effect | action and effect when the lid | cover 30 fits the container main body 10 are demonstrated. At the start of fitting, a part of the fitting portion 34 of the lid 30 comes into contact with the peripheral wall 15 of the container body 10. In the conventional lid structure, at this time, the inside of the food container 1 is hermetically sealed by the fitting of the lid 30 and the container body 10, and the air in the food container 1 is difficult to be discharged to the outside. Since it becomes resistance with respect to 30 pushing, the fitting of the lid | cover 30 is difficult. If the force for pushing the lid 30 is weak, the lid 30 may tilt due to the resistance of air in the food container 1. In such a case, reworking of the fitting work is forced.

本実施形態の食品容器１では、蓋３０は溝４１を有する。溝４１は、嵌合部３４の外周面３７ｂに設けられ、嵌合方向ＤＡに沿って延びる。そして、溝４１の第１端４１ａは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒまで延びる。このため、嵌合し始めにおいて蓋３０の嵌合部３４の一部が、容器本体１０の周壁１５に接触した状態になると、溝４１により食品容器１の内部空間ＳＰと外部とが連通する。蓋３０が容器本体１０側に押されると、溝４１を通って空気が外部に排出されるため、蓋３０が円滑に押し込められる。 In the food container 1 of the present embodiment, the lid 30 has a groove 41. The groove 41 is provided on the outer peripheral surface 37b of the fitting portion 34 and extends along the fitting direction DA. The first end 41a of the groove 41 extends to the end 37br on the fitting side SB in the fitting direction DA on the outer peripheral surface 37b. For this reason, when a part of the fitting portion 34 of the lid 30 comes into contact with the peripheral wall 15 of the container body 10 at the start of fitting, the inner space SP of the food container 1 communicates with the outside through the groove 41. When the lid 30 is pushed toward the container body 10, the air is discharged to the outside through the groove 41, so that the lid 30 is pushed in smoothly.

溝４１の第２端４１ｂは、外周面３７ｂにおいて嵌合方向ＤＡの嵌合側ＳＢの端３７ｂｒと離間側ＳＡの端３７ｂｓとの間に配置されているため、蓋３０が容器本体１０に嵌合すると、全周において、蓋３０の嵌合部３４の外周面３７ｂと容器本体１０の周壁１５の内周面１５ａとが接触するようになり、食品容器１の内部空間ＳＰが密封される。 Since the second end 41b of the groove 41 is disposed between the end 37br on the fitting side SB in the fitting direction DA and the end 37bs on the separation side SA on the outer peripheral surface 37b, the lid 30 is fitted to the container body 10. When combined, the outer peripheral surface 37b of the fitting portion 34 of the lid 30 and the inner peripheral surface 15a of the peripheral wall 15 of the container body 10 come into contact with each other, and the internal space SP of the food container 1 is sealed.

また、溝４１の第２端４１ｂ側の端部４２は、周方向の幅長ＬＸについて、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成されている。この構成によれば、周方向の幅長ＬＸが嵌合方向ＤＡに向かって溝の一端から他端にわたって一定である溝に比べて、外周面３７ｂにおいて、溝４１の第２端４１ｂの付近３７ｐでの、嵌合部３４の外周面３７ｂと容器本体１０の内周面１５ａとの接触面積が大きくなる。これによって接触面積が確保されるため、液漏れが効果的に抑制される。 Further, the end portion 42 on the second end 41b side of the groove 41 is configured to taper toward the separation side SA in the fitting direction DA with respect to the circumferential width length LX. According to this configuration, in the outer peripheral surface 37b, in the vicinity 37p of the second end 41b of the groove 41, the circumferential length LX is constant from one end of the groove toward the other end in the fitting direction DA. Thus, the contact area between the outer peripheral surface 37b of the fitting portion 34 and the inner peripheral surface 15a of the container body 10 is increased. As a result, the contact area is ensured, so that liquid leakage is effectively suppressed.

また、好ましくは、溝４１は、蓋３０の外周面３７ｂにおける曲面部３７ｒに設けられる。これは次の理由による。蓋３０と容器本体１０とが嵌合した状態では、曲率が高い曲面部３７ｒは、他の面部３７ｘ，３７ｙよりも変形し難く、蓋３０の嵌合部３４の外周面３７ｂと容器本体１０の周壁１５の内周面１５ａとの密着状態が解除され難くなる。したがって、このような曲面部３７ｒに溝４１が設けられると、溝４１の存在によって溝４１周辺から液漏れが生じるといったことが効果的に抑制される。 Preferably, the groove 41 is provided in the curved surface portion 37r on the outer peripheral surface 37b of the lid 30. This is due to the following reason. In a state where the lid 30 and the container body 10 are fitted, the curved surface portion 37r having a high curvature is less likely to deform than the other surface portions 37x and 37y, and the outer peripheral surface 37b of the fitting portion 34 of the lid 30 and the container body 10 are not deformed. The close contact state with the inner peripheral surface 15a of the peripheral wall 15 is difficult to be released. Therefore, when the groove 41 is provided in such a curved surface portion 37r, the occurrence of liquid leakage from the periphery of the groove 41 due to the presence of the groove 41 is effectively suppressed.

さらに、容器本体１０と蓋３０との嵌合部分での液体漏れを抑制するため、容器本体１０の少なくとも内周面１５ａ及び蓋３０の少なくとも外周面３７ｂのうちで少なくとも一方が、２軸延伸樹脂により構成されてもよい。２軸延伸樹脂と非延伸樹脂との接触または２軸延伸樹脂同士の接触によれば、非延伸樹脂同士の接触に比べて摩擦力（グリップ力）が高くなるため、内周面１５ａと外周面３７ｂとの間からの液漏れが効果的に抑制される。このことは、蓋３０を容器本体１０に嵌合し始めた状態において、食品容器１の内部空間ＳＰの密封性を高めることになり、蓋３０の押し込み難さを生じさせる要因にもなるが、本実施形態では、蓋３０に溝４１が設けられているため、蓋３０を円滑に押し込むことができる。すなわち、この構成においては、溝４１の効果が顕著に現れる。 Further, in order to suppress liquid leakage at the fitting portion between the container body 10 and the lid 30, at least one of at least the inner circumferential surface 15a of the container body 10 and at least the outer circumferential surface 37b of the lid 30 is biaxially stretched resin. It may be constituted by. According to the contact between the biaxially stretched resin and the nonstretched resin or the contact between the biaxially stretched resins, the frictional force (grip force) is higher than the contact between the nonstretched resins. The liquid leakage from between 37b is effectively suppressed. This increases the hermeticity of the internal space SP of the food container 1 in a state where the lid 30 has started to be fitted to the container body 10, and this also causes difficulty in pushing the lid 30, In this embodiment, since the groove | channel 41 is provided in the lid | cover 30, the lid | cover 30 can be pushed in smoothly. That is, in this configuration, the effect of the groove 41 is noticeable.

以下、溝４１を例示する。
図７には、溝４１の一例が示されている。
溝４１は、周方向の幅長ＬＸについて、第１端４１ａから第２端４１ｂ側の端部４２の基部４２ａまで、同じ寸法に構成されている。溝４１において第２端４１ｂ側の端部４２の周縁は、弧形状に構成される。端部４２は、周方向の幅長ＬＸについて、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成されている。 Hereinafter, the groove 41 will be exemplified.
FIG. 7 shows an example of the groove 41.
The groove 41 has the same dimension from the first end 41a to the base 42a of the end 42 on the second end 41b side in the circumferential length LX. In the groove 41, the periphery of the end portion 42 on the second end 41b side is formed in an arc shape. The end portion 42 is configured to taper toward the separation side SA in the fitting direction DA with respect to the circumferential length LX.

図８には、溝４１の第１変形例が示されている。
溝４１は、周方向の幅長ＬＸについて、第１端４１ａから第２端４１ｂ側の端部４２の基部４２ａまで、同じ寸法に構成されている。第２端４１ｂ側の端部４２は、周方向の幅長ＬＸについて、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成されている。具体的には、第２端４１ｂ側の端部４２は、図５の矢印Ａの方向からみて、三角形に構成される。なお、溝４１の端部４２の形状は、三角形に限定されない。例えば、溝４１の端部４２は、台形等に構成され得る。 FIG. 8 shows a first modification of the groove 41.
The groove 41 has the same dimension from the first end 41a to the base 42a of the end 42 on the second end 41b side in the circumferential length LX. The end portion 42 on the second end 41b side is configured to taper toward the separation side SA in the fitting direction DA with respect to the width length LX in the circumferential direction. Specifically, the end portion 42 on the second end 41b side is configured in a triangular shape as viewed from the direction of the arrow A in FIG. The shape of the end 42 of the groove 41 is not limited to a triangle. For example, the end portion 42 of the groove 41 can be formed in a trapezoidal shape or the like.

図９には、溝４１の第２変形例が示されている。
溝４１は、周方向の幅長ＬＸについて、第１端４１ａから第２端４１ｂまで、周方向の幅長ＬＸについて、嵌合方向ＤＡの離間側ＳＡに向かって先細りに構成されている。この例では、図５の矢印Ａの方向からみて、溝４１全体の外形が三角形に構成されている。なお、溝４１全体の外形は、三角形に限定されない。例えば、台形、楕円形を短軸で切断し形状等に構成され得る。 FIG. 9 shows a second modification of the groove 41.
The groove 41 is configured to taper from the first end 41a to the second end 41b with respect to the circumferential width length LX toward the separation side SA in the fitting direction DA with respect to the circumferential width length LX. In this example, when viewed from the direction of arrow A in FIG. In addition, the external shape of the whole groove | channel 41 is not limited to a triangle. For example, a trapezoid or an ellipse can be cut along the short axis to form a shape or the like.

図１０には、溝４１の第３変形例が示されている。
溝４１は、周方向の幅長ＬＸについて、第１端４１ａから第２端４１ｂ側の端部４２の基部４２ａまで、同じ寸法に構成されている。溝４１において第２端４１ｂ側の端部４２は、周方向の幅長ＬＸについて第１端４１ａと同じ寸法の部分と、周方向の幅長ＬＸについて第１端４１ａよりも幅狭の部分とを有し、嵌合方向ＤＡの離間側ＳＡに向かって段々に先細りとなるように構成されている。図１０に示される例では、段数は１段であるが、２段以上であってもよい。 FIG. 10 shows a third modification of the groove 41.
The groove 41 has the same dimension from the first end 41a to the base 42a of the end 42 on the second end 41b side in the circumferential length LX. In the groove 41, the end portion 42 on the second end 41b side includes a portion having the same dimension as the first end 41a in the circumferential width length LX, and a portion narrower than the first end 41a in the circumferential width length LX. And is configured to taper gradually toward the separation side SA in the fitting direction DA. In the example shown in FIG. 10, the number of stages is one, but it may be two or more.

＜第２実施形態＞
図１１〜図１６を参照して、第２実施形態に係る食品容器１について説明する。本実施形態では、容器本体１０に、食品容器１内の空気を排出するための溝５１が設けられている。容器本体１０及び蓋３０の構造は、第１実施形態と同じである。 Second Embodiment
With reference to FIGS. 11-16, the food container 1 which concerns on 2nd Embodiment is demonstrated. In the present embodiment, the container body 10 is provided with a groove 51 for discharging the air in the food container 1. The structures of the container body 10 and the lid 30 are the same as those in the first embodiment.

本実施形態では、容器本体１０の周壁１５の内周面１５ａに、嵌合方向ＤＡに沿って延びる溝５１が設けられている。 In the present embodiment, a groove 51 extending along the fitting direction DA is provided on the inner peripheral surface 15 a of the peripheral wall 15 of the container body 10.

溝５１の第１端５１ａは、容器本体１０の周壁１５の内周面１５ａにおいて嵌合方向ＤＡの離間側ＳＡの端１５ａｓまで延びる（図１３参照）。溝５１において第１端５１ａの反対側の第２端５１ｂは、内周面１５ａにおいて嵌合方向ＤＡの嵌合側ＳＢの端１５ａｒと離間側ＳＡの端１５ａｓとの間に配置される。
溝５１は、内周面１５ａにおいて嵌合方向ＤＡの離間側ＳＡの端１５ａｓを基点として、嵌合方向ＤＡの嵌合側ＳＢに向かって内周面１５ａの１／４以上３／４以下のところまで延びる。すなわち、溝５１の第２端５１ｂは、嵌合方向ＤＡにおいて内周面１５ａの幅長ＬＢの１／４以上３／４以下のところに位置する。 The first end 51a of the groove 51 extends to the end 15as on the separation side SA in the fitting direction DA on the inner peripheral surface 15a of the peripheral wall 15 of the container body 10 (see FIG. 13). The second end 51b opposite to the first end 51a in the groove 51 is disposed between the end 15ar on the fitting side SB in the fitting direction DA and the end 15as on the separation side SA on the inner peripheral surface 15a.
The groove 51 is at least 1/4 to 3/4 of the inner circumferential surface 15a toward the fitting side SB in the fitting direction DA, with the end 15as on the separation side SA in the fitting direction DA as a base point on the inner circumferential surface 15a. It extends to the point. That is, the second end 51b of the groove 51 is located at a position that is not less than 1/4 and not more than 3/4 of the width LB of the inner peripheral surface 15a in the fitting direction DA.

図１１及び図１２を参照して、蓋３０が容器本体１０に嵌合するときの作用及び効果を説明する。嵌合し始めにおいて蓋３０の嵌合部３４の一部が、容器本体１０の周壁１５に接触した状態になると、溝５１により食品容器１の内部空間ＳＰと外部とが連通する。蓋３０が容器本体１０側に押されると、溝５１を通って空気が外部に排出されるため、蓋３０が円滑に押し込められる。蓋３０が容器本体１０に嵌合すると、全周において、蓋３０の嵌合部３４の外周面３７ｂと容器本体１０の周壁１５の内周面１５ａとが接触するようになり、食品容器１の内部空間ＳＰが密封される。 With reference to FIG.11 and FIG.12, the effect | action and effect when the lid | cover 30 fits the container main body 10 are demonstrated. When a part of the fitting portion 34 of the lid 30 comes into contact with the peripheral wall 15 of the container body 10 at the start of fitting, the groove 51 allows the internal space SP of the food container 1 to communicate with the outside. When the lid 30 is pushed toward the container body 10, the air is discharged to the outside through the groove 51, so that the lid 30 is pushed in smoothly. When the lid 30 is fitted into the container main body 10, the outer peripheral surface 37 b of the fitting portion 34 of the lid 30 comes into contact with the inner peripheral surface 15 a of the peripheral wall 15 of the container main body 10, so that the food container 1 The internal space SP is sealed.

また、溝５１の第２端５１ｂ側の端部５２は、周方向の幅長ＬＹについて、嵌合方向ＤＡの嵌合側ＳＢに向かって先細りに構成されている。この構成によれば、周方向の幅長ＬＹが嵌合方向ＤＡに向かって溝の一端から他端にわたって一定である溝に比べて、内周面１５ａにおいて、溝５１の第２端５１ｂの付近１５ｐでの、嵌合部３４の外周面３７ｂと容器本体１０の内周面１５ａとの接触面積が大きくなる。これによって接触面積が確保されるため、液漏れが効果的に抑制される。 Further, the end 52 on the second end 51b side of the groove 51 is configured to taper toward the fitting side SB in the fitting direction DA with respect to the circumferential length LY. According to this configuration, in the inner peripheral surface 15a, in the vicinity of the second end 51b of the groove 51, the width LY in the circumferential direction is constant from one end of the groove toward the other end in the fitting direction DA. The contact area between the outer peripheral surface 37b of the fitting portion 34 and the inner peripheral surface 15a of the container body 10 at 15p increases. As a result, the contact area is ensured, so that liquid leakage is effectively suppressed.

以下、溝５１を例示する。
図１３には、溝５１の一例が示されている。
溝５１は、周方向の幅長ＬＹについて、第１端５１ａから第２端５１ｂ側の端部５２の基部５２ａまで、同じ寸法に構成されている。溝５１において第２端５１ｂ側の端部５２の周縁は、弧形状に構成される。端部５２は、周方向の幅長ＬＹについて、嵌合方向ＤＡの嵌合側ＳＢに向かって先細りに構成されている。 Hereinafter, the groove 51 will be exemplified.
FIG. 13 shows an example of the groove 51.
The groove 51 has the same dimension in the circumferential width length LY from the first end 51a to the base 52a of the end 52 on the second end 51b side. In the groove 51, the periphery of the end portion 52 on the second end 51b side is formed in an arc shape. The end 52 is configured to taper toward the fitting side SB in the fitting direction DA with respect to the circumferential length LY.

図１４には、溝５１の第１変形例が示されている。
溝５１は、周方向の幅長ＬＹについて、第１端５１ａから第２端５１ｂ側の端部５２の基部５２ａまで、同じ寸法に構成されている。第２端５１ｂ側の端部５２は、周方向の幅長ＬＹについて、嵌合方向ＤＡの嵌合側ＳＢに向かって先細りに構成されている。具体的には、第２端５１ｂ側の端部５２は、図１１の矢印Ｂの方向からみて、三角形に構成される。なお、溝５１の端部５２の形状は、三角形に限定されない。例えば、溝５１の端部５２は、台形等に構成され得る。 FIG. 14 shows a first modification of the groove 51.
The groove 51 has the same dimension in the circumferential width length LY from the first end 51a to the base 52a of the end 52 on the second end 51b side. The end portion 52 on the second end 51b side is configured to taper toward the fitting side SB in the fitting direction DA with respect to the circumferential length LY. Specifically, the end 52 on the second end 51b side is configured in a triangular shape as viewed from the direction of arrow B in FIG. The shape of the end 52 of the groove 51 is not limited to a triangle. For example, the end 52 of the groove 51 can be formed in a trapezoidal shape or the like.

図１５には、溝５１の第２変形例が示されている。
溝５１は、周方向の幅長ＬＹについて、第１端５１ａから第２端５１ｂまで、周方向の幅長ＬＹについて、嵌合方向ＤＡの嵌合側ＳＢに向かって先細りに構成されている。この例では、図１１の矢印Ｂの方向からみて、溝５１全体の外形が三角形に構成されている。なお、溝５１全体の外形は、三角形に限定されない。例えば、台形、楕円形を短軸で切断した形状等に構成され得る。 FIG. 15 shows a second modification of the groove 51.
The groove 51 is configured to taper from the first end 51a to the second end 51b in the circumferential width length LY toward the fitting side SB in the fitting direction DA with respect to the circumferential width length LY. In this example, when viewed from the direction of arrow B in FIG. In addition, the external shape of the whole groove | channel 51 is not limited to a triangle. For example, a trapezoidal shape or an elliptical shape can be formed by cutting along a short axis.

図１６には、溝５１の第３変形例が示されている。
溝５１は、周方向の幅長ＬＹについて、第１端５１ａから第２端５１ｂ側の端部５２の基部５２ａまで、同じ寸法に構成されている。溝５１において第２端５１ｂ側の端部５２は、周方向の幅長ＬＹについて第１端５１ａと同じ寸法の部分と、周方向の幅長ＬＹについて第１端５１ａよりも幅狭の部分とを有し、嵌合方向ＤＡの嵌合側ＳＢに向かって段々に先細りとなるように構成されている。図１６に示される例では、段数は１段であるが、２段以上であってもよい。 FIG. 16 shows a third modification of the groove 51.
The groove 51 has the same dimension in the circumferential width length LY from the first end 51a to the base 52a of the end 52 on the second end 51b side. In the groove 51, the end 52 on the second end 51b side includes a portion having the same dimension as the first end 51a in the circumferential width LY, and a portion narrower than the first end 51a in the circumferential width LY. And is configured to taper gradually toward the fitting side SB in the fitting direction DA. In the example shown in FIG. 16, the number of stages is one, but it may be two or more.

＜その他の実施形態＞
・第１実施形態において、溝４１の断面構造は限定されない。例えば、溝４１の断面は、円弧状、Ｕ字状、＞字形状等に構成される。
・第２実施形態において、溝５１の断面構造は限定されない。例えば、溝５１の断面は、円弧状、Ｕ字状、＞字形状等に構成される。 <Other embodiments>
In the first embodiment, the cross-sectional structure of the groove 41 is not limited. For example, the cross section of the groove 41 is configured in an arc shape, a U shape, a> shape, or the like.
-In 2nd Embodiment, the cross-sectional structure of the groove | channel 51 is not limited. For example, the cross section of the groove 51 is configured in an arc shape, a U shape, a> character shape, or the like.

１…食品容器、１０…容器本体、１１…収容部、１２…底面部、１３…台足部、１４…側面部、１５…周壁、１５ａ…内周面、１５ａｒ…端、１５ａｓ…端、１５ｐ…付近、１６…フランジ部、３０…蓋、３１…蓋本体部、３２…平面部、３３…側面部、３４…嵌合部、３５…内周壁、３６…横壁、３７…外周壁、３７ａ…傾斜部、３７ｂ…外周面、３７ｂｒ…端、３７ｂｓ…端、３７ｘ…面部、３７ｙ…面部、３７ｒ…曲面部、３７ｐ…付近、３８…延長部、３９…取っ手、４０…凸部、４１…溝、４１ａ…第１端、４１ｂ…第２端、４２…端部、４２ａ…基部、５１…溝、５１ａ…第１端、５１ｂ…第２端、５２…端部、５２ａ…基部、ＤＡ…嵌合方向、ＳＡ…離間側、ＳＢ…嵌合側、ＳＰ…内部空間。 DESCRIPTION OF SYMBOLS 1 ... Food container, 10 ... Container main body, 11 ... Storage part, 12 ... Bottom part, 13 ... Foot part, 14 ... Side wall part, 15 ... Peripheral wall, 15a ... Inner peripheral surface, 15ar ... End, 15as ... End, 15p ... Neighborhood, 16 ... Flange part, 30 ... Lid, 31 ... Lid body part, 32 ... Plane part, 33 ... Side face part, 34 ... Fitting part, 35 ... Inner peripheral wall, 36 ... Lateral wall, 37 ... Outer peripheral wall, 37a ... Inclined portion, 37b ... outer peripheral surface, 37br ... end, 37bs ... end, 37x ... surface portion, 37y ... surface portion, 37r ... curved surface portion, 37p ... near, 38 ... extension portion, 39 ... handle, 40 ... convex portion, 41 ... groove 41a ... first end, 41b ... second end, 42 ... end, 42a ... base, 51 ... groove, 51a ... first end, 51b ... second end, 52 ... end, 52a ... base, DA ... fit Aligning direction, SA ... separation side, SB ... fitting side, SP ... internal space.

Claims

A food container comprising a container body and a lid fitted to the container body,
The container main body has a storage portion for storing food, and a peripheral wall provided around the storage portion and having an inner peripheral surface,
The lid includes a lid main body portion and a fitting portion that is provided around the lid main body portion and engages with the peripheral wall,
The fitting portion of the lid has an outer peripheral wall extending toward a separation side in the fitting direction, and the outer peripheral wall is in contact with an outer peripheral surface that is in contact with the entire inner peripheral surface of the peripheral wall of the container body. And a groove extending along the fitting direction,
The first end of the groove extends to the fitting side end in the fitting direction on the outer peripheral surface, and the second end of the groove is separated from the fitting side end in the fitting direction on the outer peripheral surface. Between the end of the
At least the end portion on the second end side of the groove is a food container that is configured to taper toward the separation side in the fitting direction with respect to the width in the circumferential direction.

The outer peripheral surface of the lid includes a plurality of surface portions and a plurality of curved surface portions disposed between the surface portions and having a higher curvature than the surface portions,
The food container according to claim 1, wherein the groove is provided in the curved surface portion.

The outer peripheral surface of the lid includes a pair of surface portions opposed to each other, a pair of surface portions opposed to each other in a direction intersecting a direction in which the pair of surface portions are arranged, and four curved surfaces connecting the four surface portions. And
The food container according to claim 2, wherein the groove is provided in at least two of the four curved surface portions.

The outer peripheral wall of the lid has an inclined portion on the fitting side in the fitting direction,
The food container according to any one of claims 1 to 3, wherein the first end of the groove opens at the inclined portion.

The groove extends from 1/4 to 3/4 of the outer peripheral surface toward the separation side in the fitting direction with the end on the fitting side in the fitting direction as a base point. 5. The food container according to any one of 4 above.

The food container according to any one of claims 1 to 5, wherein at least one of at least the inner peripheral surface of the container body and at least the outer peripheral surface of the lid is made of biaxially stretched resin.

A food container comprising a container body and a lid fitted to the container body,
The container body has a storage part for storing food, and a peripheral wall provided around the storage part,
The lid includes a lid main body portion and a fitting portion that is provided around the lid main body portion and engages with the peripheral wall, and the fitting portion is an outer periphery that extends toward a separated side in the fitting direction. Have walls,
The peripheral wall of the container body has an inner peripheral surface that contacts the entire outer periphery of the outer peripheral wall, and a groove that extends along the fitting direction.
The first end of the groove extends to the end on the separation side in the fitting direction on the inner peripheral surface, and the second end of the groove is separated from the end on the fitting side in the fitting direction on the inner peripheral surface. Between the end of the side,
At least the end portion on the second end side of the groove is configured to taper toward the fitting side in the fitting direction with respect to the width in the circumferential direction.

8. The groove extends from ¼ to ¾ of the inner peripheral surface toward the fitting side in the fitting direction with the end on the separated side in the fitting direction as a base point. Food containers.