JPS589853Y2 - Support structure for synthetic resin containers - Google Patents

Description

【考案の詳細な説明】 本考案はビール、清涼飲料水用の壜や野菜等を収納して
輸送、貯蔵等する合成樹脂製容器に関し、高強度でしか
も成形容易な合成樹脂製容器を提供せんとするものであ
る。[Detailed description of the invention] The present invention relates to synthetic resin containers for storing, transporting, storing, etc. bottles for beer and soft drinks, vegetables, etc., and provides a synthetic resin container that has high strength and is easy to mold. That is.

一般に、上記のような容器は数段に積み重ねて使用され
るため、荷重に十分耐え得る構造としなげればならない
。Generally, containers such as those described above are used by being stacked in several tiers, so they must have a structure that can sufficiently withstand the load.

そのため、容器の四隅部における支柱を二重壁構造とし
、これを四周の側壁と一体に形成し、側壁上部には窓又
は把手用孔を設けた構造のものが使用されている。Therefore, a structure is used in which the supports at the four corners of the container have a double wall structure, are formed integrally with the four surrounding side walls, and a window or a hole for a handle is provided in the upper part of the side wall.

第１図）第３図は上記のような容器の斜視図及び部分断
面図を示すもので、１は四隅の支柱部、２は側壁、３は
断面コ字状の把手剖、４は窓、５は上部開口部である。Fig. 1) Fig. 3 shows a perspective view and a partial sectional view of the container as described above, in which 1 is the four corner struts, 2 is the side wall, 3 is the handle with a U-shaped cross section, 4 is the window, 5 is an upper opening.

支柱部１は第２図及び第３図から明らかなように、側壁
２に続いて各隅部にそれぞれアールをつけた隅部壁６と
、これら各隅部壁６の外側に更に横断面形状が略三角形
状の空間を持たせて外部壁７ｆ！：側壁２、上部フラン
ジ８及び下部フランジ９と一体に形成したいわゆる二重
壁構造とされている。As is clear from FIGS. 2 and 3, the support section 1 includes a corner wall 6 having a radius at each corner following the side wall 2, and further has a cross-sectional shape on the outside of each corner wall 6. The external wall 7f has a roughly triangular space! : It has a so-called double wall structure integrally formed with the side wall 2, upper flange 8, and lower flange 9.

そして、この種容器においては製造する際、金型χ抜き
易すくするためリブ、フランジ等は外面に設けられるが
、同じく二重壁構造の支柱部も外方に膨出する形状とさ
れている。When manufacturing this type of container, ribs, flanges, etc. are provided on the outer surface to make it easier to remove the mold, but the pillars of the double wall structure are also shaped to bulge outward. .

その結果、この種容器の支柱部には次のような問題があ
った。As a result, the pillars of this type of container had the following problems.

即ち、側壁２、隅部壁６及び外部壁７の接合部Ａの部分
が肉厚となり合成樹脂の性質からこの接合部Ａの部分の
収縮が大きくなる。That is, the joint A of the side wall 2, corner wall 6, and external wall 7 becomes thick, and the shrinkage of the joint A increases due to the nature of the synthetic resin.

従って支柱部は矢印方向に収縮し、この収縮率の相違か
ら、側壁２及び支柱部を横取する壁６，７はわん曲面を
呈し′Ｐ滑（垂直）面とすることはできなかった（第３
図参照）。Therefore, the support column contracted in the direction of the arrow, and due to this difference in shrinkage rate, the side wall 2 and the walls 6 and 7 that intersected the support column had a curved surface and could not be made into a smooth (vertical) surface ( Third
(see figure).

また、成形の際には支柱部端部の内側角部１０が金型の
支点となるため、離形抵抗も大きくなり、そのため抜き
匂配を大きく取らなければならない。In addition, during molding, the inner corner 10 of the end of the column serves as a fulcrum of the mold, so the mold release resistance becomes large, and therefore a large amount of punching pressure must be taken.

さらに、収縮率の相違による変形を防止するため、金型
からの離形前の冷却を十分に行うと収縮により金型な押
圧するので一層離形が悪くなり、残留応力が大きくさら
に変形の原因となる。Furthermore, in order to prevent deformation due to differences in shrinkage rates, if the mold is sufficiently cooled before being released from the mold, the shrinkage will press the mold, making mold release even worse, and the residual stress will be large, causing further deformation. becomes.

一方、支柱部端部の内側角部１０及び外側角部１１はほ
ぼ直角に形成されているので、外部から衝撃が加えられ
ると角部１０，１１の部分が破損し易すいという問題が
あった。On the other hand, since the inner corner 10 and outer corner 11 of the end of the column are formed at almost right angles, there is a problem in that the corners 10 and 11 are easily damaged when an external impact is applied. .

本考案は上記問題点馨解消し、成形容易でしかも高強度
の支柱部を有する容器を提供することを目的する。The object of the present invention is to solve the above-mentioned problems and provide a container that is easy to mold and has a high-strength support section.

このため本考案は四隅を側壁２に続いて隅部壁６ｆ！０
：設け、この隅部壁６の外側に横断面形状を略三角形状
とした空間をもたせて、外部壁１を側壁７を側壁２、上
部フランジ８及び下部フランジ９と一体に成形し、二重
壁構造の支柱１とした容器において、前記支柱１を側壁
２と隅部壁６とを横断面形状において側壁２に対する傾
斜角度αを４５±５度とした傾斜面壁６ａをもって接続
し、外部壁１を側壁２の外面より外方に膨出させて形成
する構成としたものである。Therefore, in the present invention, the four corners are connected to the side wall 2 and the corner wall 6f! 0
A space having a substantially triangular cross section is provided outside the corner wall 6, and the outer wall 1 is formed by integrally molding the side wall 7 with the side wall 2, the upper flange 8, and the lower flange 9, and forming a double wall. In a container with a support 1 having a wall structure, the support 1 is connected to the side wall 2 and the corner wall 6 by an inclined wall 6a having an inclination angle α of 45 ± 5 degrees with respect to the side wall 2 in the cross-sectional shape, and the external wall 1 is formed by bulging outward from the outer surface of the side wall 2.

以下、本考案を図示する実施態様に基づき説明すると、
第４図は第２図に相応する断面図であり、隅部壁６は傾
斜面壁６ａ’ｒもって側壁２の内方に膨出させて側壁２
と接続されており、一方、外部壁γは傾斜面壁１ａをも
って側壁２の外方に膨出させて側壁２と接続されており
、傾斜面壁６ａ及びγａは横断面形状において側壁２に
対し、傾斜角度α、βをそれぞれ４５±５度とされ、従
って傾斜面壁６ａ及び７ａと側壁２とは断面路７学状に
構成されている。Hereinafter, the present invention will be explained based on illustrated embodiments.
FIG. 4 is a sectional view corresponding to FIG.
On the other hand, the external wall γ is connected to the side wall 2 by bulging outward from the side wall 2 with the slope wall 1a, and the slope walls 6a and γa are sloped with respect to the side wall 2 in the cross-sectional shape. The angles α and β are each 45±5 degrees, so that the inclined walls 6a and 7a and the side wall 2 have a 7-section cross-section.

第５図は同じく本考案の他の実施態様を示すもので、前
記実施態様では隅部壁６及び外部壁７は傾斜面壁６ａ及
び７ａをもって接続し、隅部壁６のみならず外部壁７ｆ
！：も傾斜面壁をもって膨出させ接続したのに対し、隅
部壁６のみを傾斜面壁６ａをもって側壁２と接続し、外
部壁７は彎曲面壁１ｂをもって側壁２の外方に膨出させ
て側壁２と接続したものである。FIG. 5 similarly shows another embodiment of the present invention, in which the corner wall 6 and the outer wall 7 are connected by inclined walls 6a and 7a, and not only the corner wall 6 but also the outer wall 7f
! : was also connected by bulging out with an inclined wall, whereas only the corner wall 6 was connected to the side wall 2 with an inclined wall 6a, and the external wall 7 was bulged out of the side wall 2 with a curved wall 1b, and was connected to the side wall 2. It is connected to

この実施態様でも傾斜面壁６ａは側壁２に対し、傾斜角
度αを４５±５度とする。In this embodiment as well, the inclined wall 6a has an inclination angle α of 45±5 degrees with respect to the side wall 2.

この実施態様の構成は側壁２からの膨出が小さく、外部
壁７と側壁２とが傾斜面壁をもって接続できない場合に
有利である。The configuration of this embodiment has a small bulge from the side wall 2 and is advantageous when the external wall 7 and the side wall 2 cannot be connected by an inclined wall.

本考案は上記のように構成したので、側壁２と隅部壁６
及び外部壁７との接続部に収縮が集中するのを防止し、
以下のような具体的効果を奏することができる。Since the present invention is constructed as described above, the side wall 2 and the corner wall 6
and prevents contraction from concentrating on the connection part with the external wall 7,
The following specific effects can be achieved.

（１）少なくとも、側壁２と隅部壁６とは傾斜面壁６ａ
をもって接続し、外部壁７を傾斜面壁７ａ又は彎曲面壁
７ｂをもって側壁２の外方に膨出させて接続したから、
側壁２と傾斜面壁及び彎曲面壁との接続部Ｂでは応力が
分散し、収縮は均一に行なわれ、側壁２、隅部壁６及び
外部壁７は変形することなく平滑面とすることができる
０ （２）側壁２と隅部壁６及び外部壁γとは傾斜面壁及び
彎曲面壁をもって接続したので、空隙部を形成する金型
の接触面積が小さくなり、それだげ離形抵抗も小さく、
成形が容易となる。(1) At least the side wall 2 and the corner wall 6 are the inclined wall 6a.
Since the external wall 7 is connected by bulging outward from the side wall 2 with the inclined wall 7a or the curved wall 7b,
At the connection part B between the side wall 2 and the inclined surface wall and the curved surface wall, stress is dispersed and contraction is performed uniformly, and the side wall 2, the corner wall 6, and the external wall 7 can be made into smooth surfaces without deformation. (2) Since the side wall 2, the corner wall 6, and the external wall γ are connected by the inclined wall and the curved wall, the contact area of the mold forming the cavity is small, and the mold release resistance is accordingly small.
Molding becomes easier.

（３）隅部壁６及び外部壁γは収縮による変形がないの
で、上記２と相俟って成形時における金型の離形が一層
容易となるばかりでなく、金型も充分冷却できるので変
形も防止できる。(3) Since the corner walls 6 and the outer wall γ are not deformed due to shrinkage, this combined with the above 2 not only makes it easier to release the mold during molding, but also allows the mold to be sufficiently cooled. Deformation can also be prevented.

（４）側壁２と隅部壁６とは横断面形状において側壁２
に対する傾斜角度を４５±５度とした傾斜面壁６ａをも
って接続したから、外部からの衝撃も分散されて破損す
ることがなく、高強度のものを得ることができる。(4) The side wall 2 and the corner wall 6 are the side wall 2 in the cross-sectional shape.
Since the connection is made using the inclined wall 6a having an inclination angle of 45±5 degrees, external shocks are dispersed and there is no possibility of damage, making it possible to obtain a high-strength product.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の合成樹脂製容器を示す斜視図、第２図は
第１図Ｘ−Ｘ線における一部省略断面図、第３図は同じ
く変形状態を示す断面図、第４図及び第５図は本考案に
おける実施態様を示すもので、それぞれ第２図に相当す
る断面図である。 １・・・・・・支柱部、２・・・・・・側壁、３・・・
・・・把手部、４・・・・・・窓、５・・・・・・上部
開口部、６・・・・・・隅部壁、７・・・・・・外部壁
、８・・・・・・上部フランジ、９・・・・・・下部フ
ランジ、１０・・・・・・内側角部、１１・・・・・・
外側角部、６ａ、７ａ・・・・・・傾斜面壁、Ａ、Ｂ・
・・・・・接続部。Fig. 1 is a perspective view showing a conventional synthetic resin container, Fig. 2 is a partially omitted sectional view taken along the line XX in Fig. 1, Fig. 3 is a sectional view similarly showing a deformed state, Figs. FIG. 5 shows an embodiment of the present invention, and is a sectional view corresponding to FIG. 2. 1... Strut part, 2... Side wall, 3...
... Handle portion, 4 ... Window, 5 ... Upper opening, 6 ... Corner wall, 7 ... External wall, 8 ... ...Top flange, 9...Bottom flange, 10...Inner corner, 11...
Outer corner, 6a, 7a...Slope wall, A, B.
...Connection section.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 四隅を側壁２に続いて隅部壁６を設け、この隅部壁６の
外側に横断面形状な略三角形状とした空間をもたせて、
外部壁１を側壁２、上部フランジ８及び下部フランジ９
と一体に成形し、二重壁構造の支柱１とした容器におい
て、前記支柱１を側壁２と隅部壁６とを横断面形状にお
いて側壁２に対する傾斜角度αを４５±５度とした傾斜
面壁６ａをもって接続し、外部壁７を側壁２の外面より
外方に膨出させて形成したことを特徴とする合成樹脂製
容器の支柱構造。A corner wall 6 is provided following the side wall 2 at the four corners, and a space having a substantially triangular cross-sectional shape is provided outside the corner wall 6.
The external wall 1 is connected to the side wall 2, the upper flange 8 and the lower flange 9.
In the container, the support 1 is integrally molded with the support 1 having a double wall structure, and the support 1 has a side wall 2 and a corner wall 6 in a cross-sectional shape, and an inclined surface wall having an inclination angle α of 45 ± 5 degrees with respect to the side wall 2. 6a, and an external wall 7 is formed by bulging outward from the outer surface of the side wall 2.