JP4945335B2

JP4945335B2 - Plastic container lid

Info

Publication number: JP4945335B2
Application number: JP2007158063A
Authority: JP
Inventors: 貴志籔田; 吉弘和田
Original assignee: Sanko Co Ltd
Current assignee: Sanko Co Ltd
Priority date: 2007-06-14
Filing date: 2007-06-14
Publication date: 2012-06-06
Anticipated expiration: 2027-06-14
Also published as: JP2008308200A

Description

本発明は、種々の物品を収納し、運搬・保管するために使用されるプラスチック製コンテナーの蓋に関するもので、さらに詳しくは、蓋の上にさらにコンテナーを安定して積み重ねられるようにする蓋の構造に関するものである。 The present invention relates to a lid for a plastic container used for storing, transporting and storing various articles, and more specifically, a lid for allowing a container to be stably stacked on the lid. Concerning structure.

下記特許文献１に示された折りたたみコンテナーは、多段に積み重ねた際に荷重によって下段のコンテナーが座屈するといったことがないようにするため、図１５に示したように該コンテナーＡの底壁１の四隅に突出部２を形成すると共に、図１６に示したように該コンテナーＡの上端開口縁３の四隅に凹部４を形成し、積み重ねた際に上段のコンテナーＡの突出部２が下段のコンテナーＡの凹部４に嵌合することで、四隅が補強されるようにしたものであった。
なお、この底壁１は補強のため底面全体に格子状にリブが一体成形されている。また、このコンテナーは四側壁を内側に倒すことにより折りたたみ得る構造であるが、その詳細については本発明と直接関係がないので説明を省略する。
また、このコンテナーＡに被せる略直方形の蓋は、図１７に上面の斜視図を示したように、該蓋Ａ′の四隅に凹部５を形成し、下段のコンテナーＡに該蓋Ａ′を被せ、該蓋Ａ′の上に同形のコンテナーＡを積み重ねたとき該凹部５に上段のコンテナーＡの突出部２が嵌合するようにしたものであった。
実公平４−１５６３３号公報 In order to prevent the lower container from buckling due to the load when the folding container shown in the following Patent Document 1 is stacked in multiple stages, the bottom wall 1 of the container A as shown in FIG. The protrusions 2 are formed at the four corners, and the recesses 4 are formed at the four corners of the upper opening edge 3 of the container A as shown in FIG. 16, and the protrusions 2 of the upper container A become the lower container when stacked. The four corners were reinforced by fitting into the recess 4 of A.
The bottom wall 1 is integrally formed with ribs in a lattice shape on the entire bottom surface for reinforcement. Further, this container has a structure that can be folded by tilting the four side walls inward, but the details thereof are not directly related to the present invention, and thus the description thereof is omitted.
In addition, as shown in the perspective view of the upper surface of FIG. 17, the substantially rectangular lid that covers the container A has recesses 5 formed at the four corners of the lid A ′, and the lid A ′ is attached to the lower container A. When the same container A was stacked on the lid A ′, the protrusion 2 of the upper container A was fitted into the recess 5.
Japanese Utility Model Publication No. 4-15633

ところで、例えば物流センターでは、上記のように突出部２を有するコンテナーＡと、図１８に示したように底壁１に上記のような突出部が形成されてないコンテナーＢとが混在して使用されているのが現状であるが、このコンテナーＢが図１９および図２０に示したように上記蓋Ａ′の上に積み重ねられると、図２１に示したようにこのコンテナーＢの荷重が蓋Ａ′の凹部５の外周リブ６に専ら掛るため、図２２に示したように該外周リブ６が外側に折れ曲がるように変形しコンテナーＢの隅角部が該蓋Ａ′の凹部５に嵌まり込み、しかも、コンテナーＢの底壁の隅角部は通常円弧状に面取りされていることから該外周リブ６を一層外側に変形させ易いものであった。このためこのような従来の蓋Ａ′の上にはコンテナーＢが安定して積み重ねられないという問題があった。 By the way, in the distribution center, for example, the container A having the protruding portion 2 as described above and the container B in which the protruding portion as described above is not formed on the bottom wall 1 as shown in FIG. However, when the container B is stacked on the lid A ′ as shown in FIGS. 19 and 20, the load of the container B is changed to the lid A as shown in FIG. Since the outer peripheral rib 6 is exclusively engaged with the outer peripheral rib 6 of the concave portion 5 ', the outer peripheral rib 6 is deformed so as to be bent outward as shown in FIG. 22, and the corner portion of the container B is fitted into the concave portion 5 of the lid A'. Moreover, since the corner portion of the bottom wall of the container B is usually chamfered in an arc shape, the outer peripheral rib 6 is easily deformed further outward. Therefore, there is a problem that the container B cannot be stably stacked on the conventional lid A ′.

上記課題を解決するため、請求項１に記載したプラスチック製コンテナーの蓋は、略直方形のプラスチック製コンテナーに被せられる略直方形の蓋であって、四辺に形成された補強側縁に対し段状に低下する落蓋面を中央部に形成し、該補強側縁がコンテナーの上端開口縁の上に載置されることで該落蓋面がコンテナーの内側に遊嵌するようにし、該各補強側縁の両端部上面を凹欠すると共に該落蓋面からは段状に高くなる平面視略直角三角形の荷受面を該直角三角形の斜辺が該落蓋面との境となるように該蓋の四隅部に形成し、底壁の四隅に突出部が形成されていないコンテナーを該蓋の上に積み重ねた際に該コンテナーの底壁の四隅が該荷受面の斜辺上に載荷されるようにしたことを特徴とする。
このため底壁に突出部を有するコンテナーも突出部を有しないコンテナーも荷受面上に載荷され、常に安定した積み重ねができる。
また請求項２に記載した発明は、上記コンテナーの蓋において、荷受面は前記直角三角形の斜辺となるように斜めリブを落蓋面の四隅部の上面に一体に形成することにより形成したものであることを特徴とする。
このように斜めリブを形成することによっても荷受面を形成することができ、該荷受面上にコンテナーを常に安定して積み重ねることができる。 In order to solve the above-mentioned problem, the plastic container lid according to claim 1 is a substantially rectangular lid that covers a substantially rectangular plastic container, and has a stepped shape with respect to the reinforcing side edges formed on the four sides. A lid surface that falls in a central shape is formed at the center, and the reinforcing side edge is placed on the upper end opening edge of the container so that the lid surface is loosely fitted inside the container, The upper surface of both ends of the reinforcing side edge is recessed and the load receiving surface of a substantially right triangle in plan view that is stepped from the lid surface is arranged so that the hypotenuse of the right triangle is the boundary with the lid surface. When a container that is formed at the four corners of the lid and has no protrusions at the four corners of the bottom wall is stacked on the lid, the four corners of the bottom wall of the container are loaded on the oblique sides of the load receiving surface. It is characterized by that.
For this reason, a container having a protruding portion on the bottom wall and a container having no protruding portion are loaded on the load receiving surface, and stable stacking can always be performed.
The invention described in claim 2 is the lid of the container, the goods reception surface is one formed by forming one body on the upper surface of the four corners of落蓋surface oblique ribs so that the hypotenuse of the right triangle It is characterized by being.
Thus, by forming the oblique ribs, the load receiving surface can be formed, and the containers can be always stably stacked on the load receiving surface.

また請求項３に記載した発明は、上記コンテナーの蓋において、荷受面の下面に補強リブを一体に形成したことを特徴とする。
これによって荷受面の耐荷重性が増す。
また請求項４に記載した発明は、上記コンテナーの蓋において、荷受面を蓋の他部分よりも肉厚に形成すると共に、該荷受面の上面を凹凸状に形成したことを特徴とする。
これによって、荷受面の耐荷重性が増すと同時に、荷受面上に積み重ねたコンテナーとの摩擦抵抗が増すことで、該コンテナーの移動・ガタツキ・騒音が軽減される。 The invention described in claim 3 is characterized in that, in the lid of the container, a reinforcing rib is integrally formed on the lower surface of the cargo receiving surface.
This increases the load resistance of the load receiving surface.
The invention described in claim 4 is characterized in that, in the lid of the container, the load receiving surface is formed thicker than the other part of the lid, and the upper surface of the load receiving surface is formed in an uneven shape.
As a result, the load resistance of the load receiving surface is increased, and at the same time, the frictional resistance with the containers stacked on the load receiving surface is increased, thereby reducing movement, rattling and noise of the container.

底壁に突出部を有するコンテナーも突出部を有しないコンテナーも倒壊のおそれなく常に安定して積み重ねられる。このため、本発明によればコンテナー蓋としての汎用性が増し、使い勝手が向上する。 Both containers having protrusions on the bottom wall and containers without protrusions are always stably stacked without fear of collapsing. For this reason, according to this invention, the versatility as a container lid increases and usability improves.

［実施例１］
実施例１は請求項１に記載したプラスチック製の蓋の最良の形態を示すもので、図１はこの蓋１０の上面の斜視図、図２はこの蓋１０の下面の斜視図、図３は図１のＡ−Ａ線断面図、図４は図１のＢ−Ｂ線断面図である。この蓋１０は略直方形であって、相対する長側辺および短側辺に図３に示されるように断面が下向きコ字形に屈折し、その内側に適宜間隔で補強リブ１１を形成することで強度および剛性を高めた補強側縁１２，１２および補強側縁１３，１３を額縁状に形成している。なお、短側辺の補強側縁１３，１３の中間部にはその外側面１４を切除することにより手を差し入れ易くする把手部１５，１５が形成され、該把手部には止紐（図示せず）を係留するための小孔１６が開設されている。 [Example 1]
Example 1 shows the best mode of the plastic lid according to claim 1, FIG. 1 is a perspective view of the upper surface of the lid 10, FIG. 2 is a perspective view of the lower surface of the lid 10, and FIG. 1 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB in FIG. This lid 10 has a substantially rectangular shape, and its long and short sides are refracted into a U-shaped cross section as shown in FIG. 3, and reinforcing ribs 11 are formed at appropriate intervals inside thereof. The reinforcing side edges 12 and 12 and the reinforcing side edges 13 and 13 with increased strength and rigidity are formed in a frame shape. In addition, grip portions 15 and 15 are formed in the middle portion of the short side reinforcement side edges 13 and 13 so that the hand can be easily inserted by cutting the outer side surface 14. A small hole 16 is moored for mooring).

また、この蓋１０の中央部に上記補強側縁１２，１２および補強側縁１３，１３に対し段状に低下する落蓋面１７が形成され、該補強側縁がコンテナーの上端開口縁の上に載置されることで該落蓋面１７がコンテナーの内側に遊嵌する。なお、図１，図２に多数の点々を付した落蓋面１７の中央部分１７ａは、他部分よりも幾分肉厚に成形され、成形時の樹脂の収縮に伴う該落蓋面１７の変形が軽減されるようにしている。
そして、該各補強側縁１２，１２および１３，１３の両端部上面を凹欠すると共に前記落蓋面１７からは段状に高くなるように該落蓋面１７の四隅部に平面視で略直角三角形の荷受面１８を該直角三角形の斜辺１８ａが該落蓋面１７との境となるように該蓋の四隅部に形成する。なお、この荷受面１８の外周には前記補強側縁１２，１３の外側面１４から連続するように外周リブ１９が形成されている。なお、２０は落蓋面１７の外周面に突設された小突起で、該小突起をコンテナーの内側に当接させることで、この蓋１０がガタツキなく被せられるようにしている。 In addition, a drop lid surface 17 is formed at the center of the lid 10 so as to be stepped with respect to the reinforcing side edges 12 and 12 and the reinforcing side edges 13 and 13, and the reinforcing side edge is above the upper opening opening edge of the container. The lid surface 17 is loosely fitted inside the container. 1 and 2, the central portion 17a of the lid surface 17 with a large number of dots is formed to be somewhat thicker than the other portions, and the lid surface 17 is caused by the shrinkage of the resin during molding. The deformation is reduced.
Then, the upper surfaces of both end portions of the reinforcing side edges 12, 12 and 13, 13 are recessed, and the four corners of the lid surface 17 are substantially flat in plan view so as to be stepped from the lid surface 17. A right-angled triangular receiving surface 18 is formed at the four corners of the lid so that the hypotenuse 18a of the right-angled triangle is a boundary with the falling lid surface 17 . An outer peripheral rib 19 is formed on the outer periphery of the load receiving surface 18 so as to continue from the outer surface 14 of the reinforcing side edges 12 and 13. Reference numeral 20 denotes a small projection provided on the outer peripheral surface of the drop lid surface 17 so that the small projection is brought into contact with the inside of the container so that the lid 10 can be covered without rattling.

このように構成した蓋１０では、図５，図６に示したように、突出部２を有するコンテナーＡに該蓋１０を被せ、該蓋１０の上にこのような突出部を有しないコンテナーＢを積み重ねたとき、図７に示したように、該コンテナーＢの底壁の四隅が荷受面１８の斜辺１８ａ上に載荷されることから、コンテナーＢを安定して積み重ねることができると共に、外周リブ１９に荷重が掛かって変形するようなこともない。
また、図８，図９に示したように、突出部を有しないコンテナーＢに該蓋１０を被せ、該蓋１０の上に突出部２を有するコンテナーＡを積み重ねたときは、図１０に示したように、該荷受面１８上に該コンテナーＡの底壁の四隅および突出部２が載荷されることから、コンテナーＡについても該蓋１０上に安定して積み重ねることができ、外周リブ１９を変形させることがない。
そして、積み重ねたコンテナーの荷重は、いずれもこの蓋を介して下段のコンテナーの四隅角部に掛るので、下段のコンテナーも無理なく荷重に耐えられ、変形し難くなるので、重い物を積み重ねても倒壊するおそれが少ない。 In the lid 10 configured as described above, as shown in FIGS. 5 and 6, the container A having the protruding portion 2 is covered with the lid 10, and the container B not having such a protruding portion on the lid 10. 7, since the four corners of the bottom wall of the container B are loaded on the oblique side 18 a of the load receiving surface 18 as shown in FIG. 7, the container B can be stably stacked and the outer peripheral ribs can be stacked. No load is applied to 19 to cause deformation.
Further, as shown in FIGS. 8 and 9, when the lid 10 is put on the container B having no projecting portion and the container A having the projecting portion 2 is stacked on the lid 10, the container A is shown in FIG. 10. As described above, since the four corners of the bottom wall of the container A and the protruding portion 2 are loaded on the load receiving surface 18, the container A can also be stably stacked on the lid 10, and the outer peripheral rib 19 can be There is no deformation.
Since the load of the stacked containers is applied to the four corners of the lower container via this lid, the lower container can withstand the load without difficulty and is difficult to deform. There is little possibility of collapse.

なお、前記落蓋面１７は、コンテナーに被せた際に該コンテナーの内側に遊嵌すると共に、該落蓋面１７は外周の補強側縁１２，１３よりも段状に低く形成されるので、図７に示されるように該蓋１０上に積み重ねたコンテナーの底壁１が該落蓋面１７から離間した状態に保持される。このため、積み重ねるコンテナーの底壁１に多少の撓み等があっても常に安定した積み重ねができると共に、該蓋１０の落蓋面１７に印刷を施したり或いは表示シートが貼り付けられていても、底壁１がこれらから常に離間した状態に保たれ、該落蓋面１７が底壁１との接触によって汚れたり、印刷や表示が底壁１とすれて見難くなるようなおそれがない。 The lid surface 17 is loosely fitted inside the container when it is put on the container, and the lid surface 17 is formed in a step shape lower than the outer reinforcing side edges 12 and 13. As shown in FIG. 7, the bottom wall 1 of the container stacked on the lid 10 is held in a state of being separated from the falling lid surface 17. For this reason, even if there is some bending or the like on the bottom wall 1 of the container to be stacked, stable stacking can always be performed, and even if printing is performed on the falling lid surface 17 of the lid 10 or a display sheet is attached, The bottom wall 1 is always kept away from these, and there is no fear that the lid surface 17 is soiled by contact with the bottom wall 1 and that printing and display are difficult to see because the bottom wall 1 is not touched.

［実施例２］
実施例２は請求項２に記載したプラスチック製の蓋であり、図１１に示したように、各補強側縁１２，１２および１３，１３の両端部上面を凹欠すると共に、落蓋面１７の四隅部の上面に平面視で４５度の斜めリブ２１をこの凹欠部と同一高さなるように一体に形成することにより、この凹欠部と斜めリブ２１とにより荷受面１８が形成されるようにしたものである。なお、２２はこれによりできた直角三角形状の凹窪に形成した水抜孔である。このように斜めリブ２１を形成することによってもこの蓋の上にコンテナーＡおよびコンテナーＢを安定して積み重ねることができる。 [Example 2]
The second embodiment is a plastic lid according to claim 2, and as shown in FIG. 11, the upper surfaces of both ends of the reinforcing side edges 12, 12 and 13, 13 are notched and the lid surface 17 By forming the inclined ribs 21 of 45 degrees on the upper surface of the four corners in plan view so as to be the same height as the concave notches, the concave portions 21 and the oblique ribs 21 form the cargo receiving surface 18. It was made to do. In addition, 22 is a drainage hole formed in the concave portion of the right triangle shape made by this. Thus, the container A and the container B can be stably stacked on this lid also by forming the oblique rib 21.

［実施例３］
実施例３は請求項３に記載したプラスチック製の蓋であり、この蓋は図１２にその下面の斜視図を示すように、荷受面１８の下面に補強リブ２３を一体に形成することで該荷受面１８の耐荷重性を向上させ、重量物の収納・積み上げにも対処できるようにしている。 [Example 3]
The third embodiment is a plastic lid according to claim 3, and this lid is formed by integrally forming a reinforcing rib 23 on the lower surface of the load receiving surface 18 as shown in a perspective view of the lower surface in FIG. 12. The load resistance of the load receiving surface 18 is improved so that heavy objects can be stored and stacked.

［実施例４］
実施例４は請求項４に記載したプラスチック製の蓋であり、この蓋は図１３に示したように実施例３と同様に耐荷重性を向上させるために荷受面１８をこの蓋の他部分よりも肉厚に形成すると共に、図１４の断面図にも示したように、該荷受面１８の上面を凹凸状に形成することで滑り難くし、該荷受面１８上に積み上げられるコンテナーとの摩擦抵抗が増すようにすることで、該コンテナーの移動・ガタツキ・騒音が軽減されるようにしている。 [Example 4]
The fourth embodiment is a plastic lid according to the fourth aspect of the present invention. As shown in FIG. 13, this lid is provided with a load receiving surface 18 on the other part of the lid in order to improve load resistance as in the third embodiment. As shown in the cross-sectional view of FIG. 14, the upper surface of the load receiving surface 18 is formed in an uneven shape to make it difficult to slip, and the container stacked on the load receiving surface 18 By increasing the frictional resistance, movement, backlash and noise of the container are reduced.

なお以上の実施例は、折りたたみ式コンテナーについて説明したが、一般的なプラスチック製コンテナーの蓋について本発明の構造を適用しても上記のような所期の効果が奏される。 In the above embodiment, the folding container has been described. However, the above-described effect can be obtained even if the structure of the present invention is applied to the lid of a general plastic container.

本発明の実施例１を示す蓋の上面の斜視図。The perspective view of the upper surface of the lid | cover which shows Example 1 of this invention. 図１の蓋の下面の斜視図。The perspective view of the lower surface of the lid | cover of FIG. 図１の蓋のＡ−Ａ線断面図。The AA sectional view taken on the line of the lid | cover of FIG. 図１の蓋のＢ−Ｂ線断面図。The BB sectional view taken on the line of the lid | cover of FIG. 図１の蓋の使用状態を示す上方からの斜視図。The perspective view from the upper part which shows the use condition of the lid | cover of FIG. 図１の蓋の使用状態を示す下方からの斜視図。The perspective view from the lower part which shows the use condition of the lid | cover of FIG. 図１の蓋の使用状態を示す縦断面図。The longitudinal cross-sectional view which shows the use condition of the lid | cover of FIG. 図１の蓋の使用状態を示す上方からの斜視図。The perspective view from the upper part which shows the use condition of the lid | cover of FIG. 図１の蓋の使用状態を示す下方からの斜視図。The perspective view from the lower part which shows the use condition of the lid | cover of FIG. 図１の蓋の使用状態を示す縦断面図。The longitudinal cross-sectional view which shows the use condition of the lid | cover of FIG. 本発明の実施例２を示す蓋の上面の斜視図。The perspective view of the upper surface of the lid | cover which shows Example 2 of this invention. 本発明の実施例３を示す蓋の下面の斜視図。The perspective view of the lower surface of the lid | cover which shows Example 3 of this invention. 本発明の実施例４を示す蓋の上面の斜視図。The perspective view of the upper surface of the lid | cover which shows Example 4 of this invention. 図１３のＣ−Ｃ線断面図。CC sectional view taken on the line of FIG. 突出部を有するコンテナーの下面の斜視図。The perspective view of the lower surface of the container which has a protrusion part. 図１５のコンテナーの上面の斜視図。The perspective view of the upper surface of the container of FIG. 従来の蓋の上面の斜視図。The perspective view of the upper surface of the conventional lid | cover. 突出部を有しないコンテナーの下面の斜視図。The perspective view of the lower surface of the container which does not have a protrusion part. 従来の蓋の使用状態を示す上方からの斜視図。The perspective view from the top which shows the use condition of the conventional lid | cover. 従来の蓋の使用状態を示す下方からの斜視図。The perspective view from the lower part which shows the use condition of the conventional lid | cover. 従来の蓋の使用状態を示す縦断面図。The longitudinal cross-sectional view which shows the use condition of the conventional lid | cover. 従来の蓋の使用状態を示す縦断面図。The longitudinal cross-sectional view which shows the use condition of the conventional lid | cover.

Explanation of symbols

Ａ底壁に突出部を有するコンテナー
Ｂ底壁に突出部を有しないコンテナー
１コンテナーの底壁
２コンテナーの底壁の四隅に形成された突出部
１０蓋
１２，１２，１３，１３補強側縁
１７落蓋面
１８荷受面
１８ａ斜辺
２１斜めリブ
２３補強リブ A Container with protrusion on the bottom wall B Container without protrusion on the bottom wall
1 Bottom wall of container
2 Protrusions formed at the four corners of the bottom wall of the container 10 Lids 12, 12, 13, 13 Reinforcement side edges 17 Drop lid surface 18 Load receiving surface
18a Oblique side 21 Diagonal rib 23 Reinforcement rib

Claims

A substantially rectangular lid that is placed on a substantially rectangular plastic container, and a drop lid surface is formed in the center portion that drops stepwise with respect to the reinforcing side edges formed on the four sides, and the reinforcing side edges are the container. It is placed on the upper edge of the top opening edge so that the lid surface fits loosely inside the container, and the upper surfaces of both ends of each reinforcing side edge are recessed and stepped from the lid surface. The receiving surface of a substantially right-angled triangle in plan view is formed at the four corners of the lid so that the hypotenuse of the right-angled triangle is the boundary with the falling lid surface, and no protrusions are formed at the four corners of the bottom wall A plastic container lid characterized in that when the container is stacked on the lid, the four corners of the bottom wall of the container are loaded on the oblique sides of the receiving surface.

Plastic container closure as claimed in claim 1 is obtained by forming by receiving surface is to be formed in one body diagonal ribs so that oblique side on the upper surface of the four corners of落蓋surface of the right triangle.

The plastic container lid according to claim 1 or 2, wherein a reinforcing rib is integrally formed on a lower surface of the cargo receiving surface.

The plastic container lid according to claim 1 or 3, wherein the cargo receiving surface is formed thicker than the other portion of the lid, and the upper surface of the cargo receiving surface is formed in an uneven shape.