JP2004250007A

JP2004250007A - Food container

Info

Publication number: JP2004250007A
Application number: JP2003039470A
Authority: JP
Inventors: Toyotoshi Osada; 豊年長田
Original assignee: AINAKKU KK
Current assignee: AINAKKU KK
Priority date: 2003-02-18
Filing date: 2003-02-18
Publication date: 2004-09-09
Anticipated expiration: 2023-02-18
Also published as: JP4212919B2

Abstract

<P>PROBLEM TO BE SOLVED: To form a ventilation hole through which foreign matters hard to enter and which is adjustable in opening amount. <P>SOLUTION: A cylindrical valve cylinder 13b is projected around the ventilation hole 13 provided on a lid body 12 of this food container 10. A valve body 15 comprising a flange 15a and a cylindrical guide 15b is attached freely slidably in the protruding direction by fitting the valve body 15 in the valve cylinder 13b. A truncated cone shape protrusion 14 is provided at the center of the ventilation hole 13, and by the descent of the valve body 15, the protrusion 14 is fitted in a through hole 16 of the flange 15a and closes the hole, and at the same time, the flange 15a closes the upper surface of the valve cylinder 13b. Having the truncated cone shape, the protrusion 14 is easy to join to the inner periphery of the through hole 16, and airtightness of the container is increased. Also, by the ascent of the valve body 15, the protrusion 14 is removed from the through hole 16, and the ventilation hole 13 is opened. In this case, since the protrusion 14 is located under the through hole 16, foreign matters are hard to drop inside. In addition, if a date scale 19 is provided on the upper surface of the valve body 15, both of the opening/closing operational function of the ventilation hole 13 and the date display function can be performed by the valve body. Thus, even when the opening/closing operation for the ventilation hole 13 is performed, the date does not move. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、電子レンジで加熱処理を行う際に、その加熱による内部の蒸気を排出させる通気孔を有する食品用容器に関するものである。
【０００２】
【従来の技術】
この種の食品用容器は、収納物の漏れや臭いの発散を防ぐため、容器本体に対して蓋体をしっかり嵌めて、容器内が密閉できるものが一般的によく用いられる。この食品を収納した状態で、そのまま電子レンジで加熱処理すると、蒸気が発生し、その蒸気により蓋が大きな音をたてて外れる恐れがある。このため、この容器には、その蒸気を逃がす通気孔を設けている。
【０００３】
例えば、図８に示すように、容器本体２に嵌める蓋体３に円形の浅い凹部４を設けてその中心に支軸５を突設し、凹部４内における支軸５周囲に大小の通気孔６を形成し、その支軸５に円盤状の回転部材７を回転可能に取り付けたものがある（特許文献１参照）。
【０００４】
この容器１は、回転部材７を回転させることにより、その回転部材７の連通孔８と前記通気孔６とが合致して容器内外を連通し、内部の蒸気抜きを行う。このとき、連通孔８が合致する通気孔６を大小のものから適宜に選択することにより、蒸気の通気量を変える。
【０００５】
また、前記回転部材７は、その上面外周に日付目盛１９が付され、前記蓋体３上面の前記凹部４周囲には指示目盛２０が付されており、その回転部材７を回して、前記指示目盛２０を所定の日付目盛１９に合わせて、内部の食品の賞味期限あるいは収納日などを表示できる。
【０００６】
【特許文献１】
実公平６−４４８６３号公報
【０００７】
【発明が解決しようとする課題】
しかしながら、上述の従来の通気孔付き食品用容器では、通気孔が開口すると、上面から内部が直接見える状態となるため、その通気孔から異物が内部に落下することがある。また、開口量の調整を、大きさの異なる複数の通気孔の中から一つを選択することにより行うので、細かな開口量調整ができない。
【０００８】
さらに、通気孔の開閉機能と日付表示機能を、一つの部材による回転運動で共用しているため、通気孔の開口操作のために前記回転部材を回転させると、指示目盛と日付目盛により表示している日付が動くので、不便である。
【０００９】
そこで、この発明は、内部に異物が侵入しにくい構造の通気孔とし、開口量調整を自在とすることを第一の課題とし、通気孔の開閉操作により、日付目盛と指示目盛の表示が動かないようにすることを第二の課題とする。
【００１０】
【課題を解決するための手段】
上記の課題を解決するために、この発明は、食品用容器の蓋体に筒状の弁筒を突出させて設けた通気孔に、鍔部とその鍔部下面に突出する筒状ガイドとからなる弁体を嵌めて、弁体をその突出方向に摺動自在にして、通気孔を開閉可能にしたものである。このようにすれば、弁体を弁筒に完全に嵌めることにより、前記鍔部が弁筒上面を閉塞し、弁体を突出方向に摺動させることにより、鍔部の下に隙間ができて、通気孔が外部と連通する。このため、通気孔の開放状態において、通気孔上面が鍔部で覆われるので、異物が上方から内部に侵入しにくい。
【００１１】
この通気孔と外部が連通するための一態様としては、前記蓋体に有蓋の筒状突出部を設け、その突出部の周りに前記通気孔を形成し、弁体に設けた透孔を介して、前記突出部に弁体を摺動自在に嵌めるようにした構成も採用し得る。このようにすれば、弁体の弁筒に対する前記突出方向への摺動により前記透孔が突出部から抜けて、その透孔を介して通気孔が外部と連通する。このため、通気孔の開口量を大きくすることができるとともに、その透孔の下方には常に突出部が位置するので、異物が容器内に落下しにくい。
【００１２】
このとき、この突出部を錐台状にすれば、その錐台状の突出部の側周面が、前記透孔内周に密着して通気孔を閉塞するので、容器内の気密性が高まり、食品が清潔に保てるとともに、収納物の遺漏がない。
【００１３】
この弁筒、突出部、筒状ガイド、透孔を平面視断面円形として、前記弁体を蓋体に対して回転自在とし、弁体の上面に日付目盛又は指示目盛のいずれか一方を設け、前記蓋体上面の通気孔周囲には、前記日付目盛又は指示目盛に対応する指示目盛又は日付目盛を設けた構成も採用し得る。このようにすれば、日付表記機能が弁体の回転運動に、通気孔の開閉機能が弁体の昇降運動になって、それぞれ異なる方向への操作となる。このため、通気孔の開閉操作により日付表示が動かないので、便利である。
【００１４】
【発明の実施の形態】
一実施形態を図１乃至図５に示し、この実施形態の通気孔付き食品用容器は、食品を収納した状態で、蓋をしたまま電子レンジで加熱処理が可能な食品用容器１０である。
【００１５】
この食品用容器１０は、図１及び図２に示すように、耐熱樹脂製の容器本体１１及び同じく蓋体１２とからなり、蓋体１２の上面に通気孔１３を設け、その通気孔１３に昇降自在の弁体１５を取り付ける。
【００１６】
前記通気孔１３は、蓋体１２の適宜の位置に設けられ、蓋体１２に形成した凹部２１の底面に突出させて設けた円形の筒状弁筒１３ｂにより構成され、図２に示すように、その弁筒１３ｂは内周の上端に顎部１８を有している。
【００１７】
また、通気孔１３は、中央部に円錐台状の突出部１４を有し、その突出部１４は、前記弁筒１３ｂ内周から水平に延ばされた支持片１３ａにより蓋体１２に支持されて、その突出部１４外周と弁筒１３ｂ内周との間の間隙をもって、蓋体１２表裏を連通する通気孔１３となっている。図２に示す形態では、３本の支持片１３ａにより、三方から突出部１４を支持しているが、支持片１３ａの本数は、前記通気孔１３の開放部の面積が充分である限りにおいて自由である。
【００１８】
弁体１５は、図４（ａ）に示すように、円盤状の鍔部１５ａとその下方に設けた円形の筒状ガイド１５ｂとからなり、鍔部１５ａは、中央部に断面が円形を成す上下方向の透孔１６を有し、筒状ガイド１５ｂはその外周全周の下端に、側方に突出する突部１７を有している。
【００１９】
この弁体１５の筒状ガイド１５ｂを前記弁筒１３ｂに嵌め込むことにより、弁体１５を蓋体１２に取り付け、突部１７が弁筒１３ｂに、顎部１８が筒状ガイド１５ｂに当接することにより上下方向に誘導されて、弁体１５が、前記弁筒及び筒状ガイド１５ｂの突出方向に摺動自在となって、蓋体１２に対して昇降可能となる。
【００２０】
この鍔部１５ａを下方に押さえることにより弁体１５が降下して、突出部１４は前記透孔１６に嵌まり、その透孔１６の内周に、突出部１４の円錐台側周面１４ａが密着して、透孔１６が塞がれる。このとき、前記突出部１４の側周面１４ａが、突出方向にいくほど徐々に細くなっており、下方へいくほど広くなるテーパー面となっているので、その側周面１４ａと透孔１６内周とが密着しやすい。このため、容器１０内の気密性が高まる。
【００２１】
また、図４（ａ）に示すように、通気孔１３の弁筒１３ｂ内周に前記突部１７が、通気孔１３全周に亘り隙間なく当接しているので、弁体１５と通気孔１３内周の間の蒸気の漏れを防ぐ。さらに、弁体１５が降下して、弁筒１３ｂに完全に嵌まった状態では、弁体１５の鍔部１５ａ下面が、通気孔１３の弁筒１３ｂ上端に密着し、鍔部１５ａが弁筒１３ｂ上面を閉塞する。このため、通気孔１３をより気密に閉塞できる。
【００２２】
つぎに、前記蓋体１２の凹部２１に指を収め、鍔部１５ａの両端部を掴んで弁体１５を持ち上げることにより、図４（ｂ）に示すように、弁体１５が弁筒１３ｂに対して前記突出方向に摺動して上昇し、突出部１４が透孔１６から外れて、図中に示す隙間ｗが生じ、通気孔１３が開放されて外部と連通する。このとき、前記隙間ｗは、前記突出部１４の周囲に沿って環状に生じるので、容器１０内部に発生した蒸気が、図中の矢印のように容器１０外に排出される際の、その蒸気の流れが円滑である。
【００２３】
この弁体１５の昇降度合を変化させることにより、前記隙間ｗの寸法が変わるので、通気孔１３の開放量が調整できる。このため、容器内の食品から発生する蒸気量にあわせて、通気孔１３の開口の大きさを容易に変えることができる。その適宜の弁体１５の高さにおいて、前記通気孔１３の弁筒１３ｂ内周（顎部１８を含む）と、弁体１５の筒状ガイド１５ｂ外周（突部１７を含む）とが当接しているので、この当接により弁体１５が固定されて、弁体１５が、図４（ａ）に示す閉塞状態の位置に落下しない。
【００２４】
また、図４（ｂ）に示す、この通気孔１３の開放状態において、弁体１５の筒状ガイド１５ｂ下端の突部１７が、前記顎部１８に当たって、弁体１５が前記開放状態の位置からそれ以上、上方へ抜けないようになっている。このようにすれば、弁体１５を上方へ引きすぎても弁体１５が蓋体１２から外れないので、通気孔１３の開閉操作が容易である。
【００２５】
このとき、前記突部１７のやや上方には、前記筒状ガイド１５ｂの側面に凹部１５ｃを設けているので、図示するように、顎部１８が凹部１５ｃに嵌まる。このようにすれば、弁体１５が通気孔１３の開放状態においてしっかりと固定されるので、弁体１５への不意の加重により通気孔１３が閉じにくい。
【００２６】
さらに、この弁体１５は、その上面に日付目盛１９を設けており、前記蓋体１２上面の通気孔１３周囲には、その日付目盛１９に対応して適宜の日付を指す指示目盛２０を設けている。弁体１５を、蓋体１２に対して回転することにより、前記指示目盛２０が指す日付目盛１９が変わる。
【００２７】
この日付表記機能を使用する際、弁体１５は、前述のごとく通気孔１３内周に当接しながら回転するので、この当接により、水平方向の回転が適宜の位置で固定されて、目盛の不用意な移動を防ぐことができる。また、弁体１５を昇降させた際に、この日付目盛の表示がずれないので、便利である。
【００２８】
この実施形態では、弁体１５に日付目盛１９を、蓋体１２に指示目盛２０を設けたが、この実施形態には限定されず、弁体１５に指示目盛２０を、蓋体１２に日付目盛１９を設けた構成も採用し得る。
【００２９】
また、この日付の表示機能を求めない場合には、両目盛１９，２０を省略した構成としてもよい。日付機能を求めない場合、弁体１５は、回転しない構成としてもよく、その場合は、前記通気孔１３の弁筒１３ｂ、及び弁体１５の筒状ガイド１５ｂの平面視の断面形状は円形のものに限定されず、相互に嵌まりあう形状である限りにおいて自由である。例えば、三角形、四角形などの多角形や、楕円形などの断面形状とすることができる。この弁体１５が回転しない構成の場合、透孔１６と突出部１４の断面形状も上記と同様、透孔１６に突出部１４が嵌まりあう形状である限りにおいて自由であり、例えば、突出部１４は、角錐台状のものも使用できる。
【００３０】
また、突出部１４の立体形状は、この実施形態の錐台状のもの以外にも、前記テーパー面を垂直にした円柱状や角柱状のものも採用できる。
【００３１】
なお、上記の実施形態では、図２に示すように、前記顎部１８は、通気孔１３内周に断続的に設けたが、この実施形態以外にも、例えば、顎部１８を通気孔１３の全周に設けた構成も採用し得る。このようにすれば、弁体１５の外周と顎部１８が全周で密着するので、通気孔１３の閉塞がさらに確実になり、通気孔１３の閉塞状態において、容器１０内の気密性を高めることができる。また、逆に突部１７を断続的に設けた構成も考えられる。
【００３２】
弁体１５の顎部１５ａの形状は、この実施形態では円形のものを使用したが、図４（ａ）に示す通気孔１３の閉塞状態において、前記凹部２１に指を収納できる形状であれば、その形状は問わない。
【００３３】
また、他の実施形態として、図６に示すように、前記弁体１５の筒状ガイド１５ｂに、その周周りの適宜の位置に横方向の開口部１５ｄを設け、弁体１５が上昇した際に、図中の矢印のように、その開口部１５ｄから蒸気を排出するようにした構成も採用し得る。このようにすれば、開口量が増えるので、蒸気の排出量を増やすことができる。
【００３４】
さらに、図７に示すように、前記鍔部１５ａの透孔１６を設けないで鍔部１５ａを板状にし、前記突出部１４を省略して、前記開口部１５ｄのみから蒸気を排出するようにした構成も採用しうる。
【００３５】
前述の突部１７、顎部１８は、そのいずれか一方を設けないようにした構成も考えられるが、その場合は、弁体１５を上方に引くことにより、弁体１５が蓋体１２から外れる構造となる。また、突部１７、顎部１８の両方を設けないようにした構成も考えられ、その場合は、前記と同様に、弁体１５が蓋体１２から外れる構造となる。
【００３６】
なお、この食品用容器１０は、図５に示すように多段に積んで使用でき、このとき、前記鍔部１５ａ上面の高さは、上方に載せたの容器１０の底に当たらないようにする。
【００３７】
【発明の効果】
この発明は、以上のように、通気孔から内部に異物が侵入しにくく、開口量調整が自在である。また、通気孔の弁体に付帯した日付表示機能を使いながら、その通気孔の開閉操作ができる。
【図面の簡単な説明】
【図１】一実施形態の斜視図
【図２】一実施形態の通気孔部分の拡大斜視図
【図３】同実施形態の通気孔部分の拡大平面図
【図４】同実施形態の通気孔部分を示す切断正面図であり、（ａ）は閉塞状態、（ｂ）は開放状態
【図５】食品用容器を多段に積載した切断正面図
【図６】他の実施形態の通気孔部分の切断正面図
【図７】他の実施形態の通気孔部分の切断正面図
【図８】従来例の通気孔付き食品用容器
【符号の説明】
１，１０食品用容器
２，１１容器本体
３，１２蓋体
４凹部
５支軸
６，１３通気孔
７回転部材
８連通孔
１３ａ支持片
１３ｂ弁筒
１４突出部
１４ａ側周面
１５弁体
１５ａ鍔部
１５ｂ筒状ガイド
１５ｃ凹部
１５ｄ開口部
１６透孔
１７突部
１８顎部
１９日付目盛
２０指示目盛
２１凹部[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food container having a ventilation hole for discharging internal steam by heating when a heating process is performed in a microwave oven.
[0002]
[Prior art]
As a container for this type of food, a container in which a lid is tightly fitted to a container body and the inside of the container can be hermetically sealed is often used in order to prevent leakage of stored items and emission of odor. When the food is stored in a microwave oven as it is, steam is generated, and the steam may cause the lid to come off with a loud noise. For this reason, this container is provided with a vent hole for allowing the vapor to escape.
[0003]
For example, as shown in FIG. 8, a circular shallow recess 4 is provided in a lid 3 fitted into the container main body 2, and a support shaft 5 is protruded at the center thereof, and large and small ventilation holes are formed around the support shaft 5 in the recess 4. 6, a disk-shaped rotating member 7 is rotatably attached to the support shaft 5 (see Patent Document 1).
[0004]
By rotating the rotating member 7, the communication hole 8 of the rotating member 7 and the ventilation hole 6 coincide with each other, and the container 1 communicates with the inside and outside of the container 1, so that the inside of the container 1 is vented. At this time, by appropriately selecting the ventilation hole 6 that matches the communication hole 8 from the large and small ones, the amount of steam ventilation is changed.
[0005]
The rotary member 7 is provided with a date scale 19 on the outer periphery of the upper surface thereof, and an indicator scale 20 around the concave portion 4 on the upper surface of the lid 3. By setting the scale 20 to a predetermined date scale 19, the expiration date or the storage date of the food inside can be displayed.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 6-44863
[Problems to be solved by the invention]
However, in the above-described conventional food container with a vent, when the vent is opened, the inside becomes directly visible from the upper surface, and thus, foreign matter may fall into the inside from the vent. Further, since the adjustment of the opening amount is performed by selecting one from a plurality of ventilation holes having different sizes, fine adjustment of the opening amount cannot be performed.
[0008]
Furthermore, since the opening / closing function of the ventilation hole and the date display function are shared by the rotation movement of one member, when the rotating member is rotated for the opening operation of the ventilation hole, it is displayed by the indication scale and the date scale. It is inconvenient because the date is moving.
[0009]
Therefore, the first object of the present invention is to provide a ventilation hole having a structure in which foreign substances hardly enter into the inside and to make the opening amount adjustable freely, and the display of the date scale and the indication scale is moved by opening and closing operation of the ventilation hole. The second task is to avoid such a situation.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention relates to a vent formed by projecting a cylindrical valve cylinder in a lid of a food container, a flange portion and a cylindrical guide projecting from a lower surface of the flange portion. The valve body is slidable in the protruding direction of the valve body so that the vent hole can be opened and closed. With this configuration, by completely fitting the valve body into the valve cylinder, the flange closes the upper surface of the valve cylinder, and the valve body slides in the protruding direction, so that a gap is formed below the flange. The vent holes communicate with the outside. For this reason, in a state where the ventilation hole is opened, the upper surface of the ventilation hole is covered with the flange portion, so that foreign matter is unlikely to enter the inside from above.
[0011]
As one mode for allowing the vent to communicate with the outside, a lid-covered cylindrical projection is provided on the lid, the vent is formed around the projection, and the vent is formed through the through-hole provided in the valve body. Thus, a configuration in which a valve body is slidably fitted to the protruding portion may be adopted. With this configuration, the through hole comes out of the protruding portion by sliding the valve body with respect to the valve cylinder in the protruding direction, and the vent hole communicates with the outside through the through hole. For this reason, the opening amount of the ventilation hole can be increased, and the projection is always located below the ventilation hole, so that foreign matter is less likely to fall into the container.
[0012]
At this time, if the protruding portion is formed in a frustum shape, the side peripheral surface of the frustum-shaped protruding portion is in close contact with the inner periphery of the through hole and closes the ventilation hole, so that the airtightness in the container is increased. In addition, food can be kept clean and there is no omission of stored items.
[0013]
The valve cylinder, the projecting portion, the cylindrical guide, the through-hole is circular in cross section in plan view, the valve body is rotatable with respect to the lid, and either the date scale or the indication scale is provided on the upper surface of the valve body, A configuration in which an indication scale or a date scale corresponding to the date scale or the indication scale is provided around the ventilation hole on the upper surface of the lid may be adopted. According to this configuration, the date notation function is the rotational movement of the valve body, and the opening / closing function of the vent is the up-and-down movement of the valve body, and the operations are performed in different directions. This is convenient because the date display does not move due to the opening / closing operation of the ventilation hole.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment is shown in FIGS. 1 to 5, and the food container with a vent according to this embodiment is a food container 10 that can be heat-treated in a microwave oven with the lid kept in a state in which the food is stored.
[0015]
As shown in FIGS. 1 and 2, the food container 10 comprises a container body 11 made of a heat-resistant resin and a lid 12, and a ventilation hole 13 is provided on the upper surface of the lid 12. A vertically movable valve body 15 is attached.
[0016]
The vent hole 13 is provided at an appropriate position on the lid 12 and is constituted by a circular cylindrical valve cylinder 13b provided so as to protrude from the bottom surface of the concave portion 21 formed on the lid 12, as shown in FIG. The valve cylinder 13b has a jaw 18 at the upper end of the inner circumference.
[0017]
The vent hole 13 has a truncated cone-shaped protrusion 14 at the center, and the protrusion 14 is supported by the lid 12 by a support piece 13a extending horizontally from the inner periphery of the valve cylinder 13b. The gap between the outer periphery of the protruding portion 14 and the inner periphery of the valve cylinder 13b forms a ventilation hole 13 communicating between the front and back of the lid 12. In the embodiment shown in FIG. 2, the projections 14 are supported from three sides by three support pieces 13a, but the number of the support pieces 13a is free as long as the area of the opening of the ventilation hole 13 is sufficient. It is.
[0018]
As shown in FIG. 4A, the valve body 15 includes a disk-shaped flange portion 15a and a circular cylindrical guide 15b provided therebelow. The flange portion 15a has a circular cross section at the center. The tubular guide 15b has a through hole 16 in the vertical direction, and the cylindrical guide 15b has a protrusion 17 projecting laterally at the lower end of the entire outer periphery.
[0019]
By fitting the tubular guide 15b of the valve body 15 into the valve barrel 13b, the valve body 15 is attached to the lid 12, the projection 17 abuts on the valve barrel 13b, and the jaw 18 abuts on the cylindrical guide 15b. As a result, the valve body 15 is guided in the vertical direction, and is slidable in the projecting direction of the valve cylinder and the cylindrical guide 15b, so that the valve body 15 can move up and down with respect to the lid 12.
[0020]
By pressing down this flange portion 15a, the valve body 15 descends, and the protruding portion 14 fits into the through-hole 16, and the inner surface of the through-hole 16 has a truncated cone-side peripheral surface 14a of the protruding portion 14. The through holes 16 are closed with close contact. At this time, the side peripheral surface 14a of the protruding portion 14 is gradually tapered as it goes in the protruding direction, and is a tapered surface that becomes wider as it goes downward. It is easy to adhere to the circumference. For this reason, the airtightness in the container 10 increases.
[0021]
Further, as shown in FIG. 4 (a), the projection 17 is in contact with the inner periphery of the valve cylinder 13b of the ventilation hole 13 without any gap over the entire periphery of the ventilation hole 13, so that the valve body 15 and the ventilation hole 13 Prevents leakage of steam between inner circumferences. Further, when the valve element 15 is lowered and completely fitted into the valve cylinder 13b, the lower surface of the flange portion 15a of the valve element 15 is in close contact with the upper end of the valve cylinder 13b of the ventilation hole 13, and the flange portion 15a is closed. 13b Close the upper surface. Therefore, the air holes 13 can be more airtightly closed.
[0022]
Next, by putting a finger in the concave portion 21 of the lid 12 and grasping both ends of the flange portion 15a and lifting the valve body 15, the valve body 15 is moved to the valve cylinder 13b as shown in FIG. On the other hand, the protrusion 14 slides in the protruding direction and rises, the protruding portion 14 comes off the through hole 16, a gap w shown in the drawing is generated, and the vent hole 13 is opened to communicate with the outside. At this time, since the gap w is formed annularly along the periphery of the protruding portion 14, when the steam generated inside the container 10 is discharged out of the container 10 as indicated by an arrow in the drawing, the steam is generated. Flow is smooth.
[0023]
By changing the degree of elevation of the valve body 15, the size of the gap w changes, so that the opening amount of the vent hole 13 can be adjusted. Therefore, the size of the opening of the ventilation hole 13 can be easily changed according to the amount of steam generated from the food in the container. At the appropriate height of the valve body 15, the inner circumference (including the jaw 18) of the valve cylinder 13 b of the ventilation hole 13 and the outer circumference (including the projection 17) of the cylindrical guide 15 b of the valve body 15 abut. Therefore, the valve body 15 is fixed by this contact, and the valve body 15 does not drop to the closed position shown in FIG.
[0024]
In the open state of the vent hole 13 shown in FIG. 4B, the projection 17 at the lower end of the cylindrical guide 15b of the valve body 15 hits the jaw 18 so that the valve body 15 is moved from the position of the open state. It cannot be pulled further upward. With this configuration, even if the valve element 15 is pulled too far upward, the valve element 15 does not come off the lid 12, so that the opening / closing operation of the ventilation hole 13 is easy.
[0025]
At this time, since the concave portion 15c is provided on the side surface of the cylindrical guide 15b slightly above the projecting portion 17, the jaw portion 18 fits into the concave portion 15c as shown in the figure. By doing so, the valve body 15 is firmly fixed in the open state of the vent hole 13, so that the vent hole 13 is difficult to close due to unexpected load on the valve body 15.
[0026]
Further, the valve body 15 is provided with a date scale 19 on the upper surface thereof, and an indicator scale 20 indicating an appropriate date corresponding to the date scale 19 is provided around the ventilation hole 13 on the upper surface of the lid 12. ing. By rotating the valve body 15 with respect to the lid body 12, the date scale 19 indicated by the indication scale 20 changes.
[0027]
When the date notation function is used, the valve body 15 rotates while abutting on the inner periphery of the ventilation hole 13 as described above, so that the rotation in the horizontal direction is fixed at an appropriate position by this abutment, and Inadvertent movement can be prevented. Further, when the valve body 15 is moved up and down, the display of the date scale does not shift, which is convenient.
[0028]
In this embodiment, the date scale 19 is provided on the valve body 15 and the indication scale 20 is provided on the lid 12. However, the present invention is not limited to this embodiment, and the indication scale 20 is provided on the valve body 15 and the date scale is provided on the lid 12. A configuration in which 19 is provided can also be adopted.
[0029]
When the date display function is not required, the scales 19 and 20 may be omitted. When the date function is not required, the valve element 15 may be configured not to rotate. In this case, the cross-sectional shape in plan view of the valve cylinder 13b of the vent hole 13 and the cylindrical guide 15b of the valve element 15 is circular. The shape is not limited to this, and may be any shape as long as the shapes fit each other. For example, it can be a polygon such as a triangle or a quadrangle, or a cross-sectional shape such as an ellipse. In the case where the valve body 15 does not rotate, the cross-sectional shape of the through hole 16 and the protruding portion 14 is also free as long as the protruding portion 14 fits into the through hole 16 in the same manner as described above. 14, a truncated pyramid can also be used.
[0030]
Further, as the three-dimensional shape of the protruding portion 14, in addition to the frustum-shaped shape of this embodiment, a columnar shape or a prismatic shape in which the tapered surface is perpendicular can be adopted.
[0031]
In the above embodiment, as shown in FIG. 2, the jaw 18 is provided intermittently on the inner periphery of the ventilation hole 13. The configuration provided on the entire circumference of the above can also be adopted. With this configuration, the outer periphery of the valve body 15 and the jaw 18 are in close contact with each other over the entire periphery, so that the air hole 13 is more reliably closed, and the airtightness in the container 10 is improved when the air hole 13 is closed. be able to. Conversely, a configuration in which the protrusions 17 are provided intermittently is also conceivable.
[0032]
The jaw 15a of the valve body 15 has a circular shape in this embodiment. However, in the closed state of the ventilation hole 13 shown in FIG. The shape is not limited.
[0033]
Further, as another embodiment, as shown in FIG. 6, a lateral opening 15d is provided at an appropriate position around the circumference of the cylindrical guide 15b of the valve body 15 so that the valve body 15 rises. Alternatively, as shown by an arrow in the drawing, a configuration in which steam is discharged from the opening 15d may be adopted. By doing so, the amount of opening can be increased, so that the amount of discharged steam can be increased.
[0034]
Further, as shown in FIG. 7, the flange portion 15a is formed in a plate shape without providing the through hole 16 of the flange portion 15a, the protrusion 14 is omitted, and steam is discharged only from the opening 15d. Such a configuration can also be adopted.
[0035]
It is conceivable that one of the above-mentioned projection 17 and jaw 18 is not provided, but in this case, the valve 15 is detached from the lid 12 by pulling the valve 15 upward. Structure. In addition, a configuration in which both the protrusion 17 and the jaw 18 are not provided is also conceivable. In this case, the valve body 15 is detached from the lid 12 as described above.
[0036]
As shown in FIG. 5, the food container 10 can be used by being stacked in multiple stages, and at this time, the height of the upper surface of the flange portion 15a does not hit the bottom of the container 10 placed above. .
[0037]
【The invention's effect】
As described above, according to the present invention, it is difficult for foreign matter to enter the inside from the ventilation hole, and the opening amount can be freely adjusted. Also, the opening and closing operation of the vent can be performed while using the date display function attached to the valve body of the vent.
[Brief description of the drawings]
FIG. 1 is a perspective view of one embodiment; FIG. 2 is an enlarged perspective view of a vent portion of one embodiment; FIG. 3 is an enlarged plan view of a vent portion of the embodiment; FIG. FIG. 6 is a cut front view showing a portion, (a) is a closed state, (b) is an open state. (FIG. 5) A cut front view in which food containers are stacked in multiple stages. FIG. 7 is a cut front view of a vent portion of another embodiment. FIG. 8 is a conventional food container with a vent hole.
1, 10 Food container 2, 11 Container body 3, 12 Lid 4 Depression 5 Support shaft 6, 13 Vent hole 7 Rotating member 8 Communication hole 13a Supporting piece 13b Valve cylinder 14 Projection 14a Side peripheral surface 15 Valve 15a Flange Part 15b Cylindrical guide 15c Recess 15d Opening 16 Through hole 17 Projection 18 Jaw 19 Date scale 20 Indication scale 21 Recess

Claims

A container body 11 and a lid 12 which is fitted into the container body 11 in a hermetically sealed state, wherein the lid 12 has a ventilation hole 13 and has a valve for opening and closing the ventilation hole 13. In the container,
The valve body 15 of the valve includes a flange portion 15a and a cylindrical guide 15b protruding from the lower surface of the flange portion 15a, and is provided with a cylindrical valve cylinder 13b protruding from the lid 12 around the ventilation hole 13; The valve body 15 is slidably provided in the projecting direction by fitting the cylindrical guide 15b into the valve cylinder 13b,
When the valve element 15 is completely fitted into the valve cylinder 13b, the upper surface of the valve cylinder 13b is closed by the flange portion 15a of the valve element 15 and, from that state, the valve element 15 is moved to the valve cylinder 13b. A food container characterized in that the air hole (13) communicates with the outside when slid in the protruding direction.

The lid 12 is provided with a covered cylindrical protrusion 14, and the ventilation hole 13 is formed around the protrusion 14, and the valve body 15 is connected to the cylindrical protrusion 14 through the through hole 16. When the valve body 15 is slidably fitted in the protruding direction and the valve body 15 is slid in the protruding direction with respect to the valve cylinder 13b, the protruding portion 14 comes out of the through hole 16 and the vent hole 13 communicates with the outside. The food container according to claim 1, wherein:

The food container according to claim 2, wherein the protrusion 14 has a frustum shape that gradually becomes thinner in a protrusion direction.

The valve cylinder 13b, the protruding portion 14, the cylindrical guide 15b, and the through hole 16 form a circular cross section in plan view, and the valve body 15 is rotatable with respect to the lid 12, and the upper surface of the valve body 15 A date scale 19 or an indication scale 20 is provided on the upper surface of the lid 12 around the ventilation hole 13, and an indication scale 20 or a date scale 19 corresponding to the date scale 19 or the indication scale 20 is provided. The food container according to any one of claims 1 to 3, wherein the date scale 19 indicated by the indication scale 20 is changed by the rotation.