JP2018070160A - container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oval-shaped container having a cross section with high strength against direct axial compression.SOLUTION: A container is formed by synthetic resin, and an opening portion, shoulder portion 20, a barrel portion 30 and a bottom portion 50 are disposed along a center axis J. The shoulder portion, barrel portion and bottom portion are substantially oval-shaped cross-sectional contour perpendicular to the center axis. The shoulder portion has an outer peripheral surface which is a convex surface projecting in a direction in which a distance from the center axis increases in the cross-sectional contour including the center axis. The barrel portion has an outer peripheral surface which is a concave surface connected to the convex surface and hollowing in a direction in which a distance from the center axis decreases in the cross-sectional contour including the center axis. The bottom portion has an outer peripheral surface connected to the concave surface and substantially parallel to the center axis. Relationships c>b>a, and g>h>f are satisfied, where a is a minimum width of the barrel portion, b is a maximum width of the shoulder portion and c is a width of the bottom portion in a long axis direction of the substantially oval-shaped, and f is a minimum width of the barrel portion, h is a maximum width of the shoulder portion and g is a width of the barrel portion in a short axis direction of the substantially oval-shaped.SELECTED DRAWING: Figure 1

Description

本発明は、容器に関するものである。   The present invention relates to a container.

例えば、シャンプーやリンス、ボディーソープ、台所洗剤、液体衣料洗剤、柔軟剤などの液体製品を収容する容器は、一般に合成樹脂材料をブロー成形によってボトル状に形成されている。この種の容器は、ダンボール箱に詰めた形態で、該ダンボール箱を積み重ねても、容器が変形したり破損したりしないように、上方からの押圧力に対して充分な強度を有することも要求される。   For example, containers that contain liquid products such as shampoos and rinses, body soaps, kitchen detergents, liquid clothing detergents, and softeners are generally formed into bottles by blow molding synthetic resin materials. This type of container is also required to have sufficient strength against the pressing force from above so that the container will not be deformed or damaged even if the cardboard boxes are stacked in a form packed in a cardboard box. Is done.

例えば、容量が７００ｍｌ程度の容器では、２００Ｎの反力までの縦軸圧縮において容器天面の変位が４ｍｍ以上となるため、ダンボール箱による強度補強が必要となりコスト増を招いてしまう。   For example, in a container having a capacity of about 700 ml, the displacement of the top surface of the container becomes 4 mm or more in the compression of the vertical axis up to a reaction force of 200 N. Therefore, strength reinforcement by a corrugated cardboard box is required, resulting in an increase in cost.

そこで、特許文献１には、容器の肩部および胴部における曲率半径、中央円筒部の最下部から底部に到る胴部の水平断面の同心直径を規定することにより、樹脂製容器の耐荷重性及び耐衝撃性を高くする技術が開示されている。   Therefore, in Patent Document 1, by defining the radius of curvature at the shoulder and body of the container, and the concentric diameter of the horizontal section of the body from the bottom of the central cylindrical part to the bottom, the load resistance of the resin container A technique for increasing the resistance and impact resistance is disclosed.

実開平７−００２２１３号公報Japanese Utility Model Publication No. 7-002213

しかしながら、上述したような従来技術でも、軸直圧縮時における反力が十分であるとは言い難い。近年では、家庭で用いる容器についてデザイン性や収納性の向上が求められており、軸線と直交する断面が略卵形、略楕円形、略長円形等のオーバル形状の容器について軸直圧縮に対する高い強度が要求されている。   However, even with the conventional techniques as described above, it is difficult to say that the reaction force during the axial direct compression is sufficient. In recent years, there has been a demand for improvements in design and storage for containers used in homes, and high cross-axis compression is required for oval containers such as approximately oval, approximately oval, and approximately oval in cross section perpendicular to the axis. Strength is required.

本発明は、以上のような点を考慮してなされたもので、軸直圧縮に対する高い強度を有する断面がオーバル形状の容器を提供することを目的とする。   The present invention has been made in view of the above points, and an object of the present invention is to provide a container having an oval cross section having high strength against axial compression.

本発明の第１の態様に従えば、合成樹脂により形成され、中心軸線に沿って開口部、肩部、胴部、底部が配置されたボトル状の容器であって、前記肩部、前記胴部および前記底部は、前記中心軸線と直交する断面輪郭が略オーバル形状であり、前記肩部は、前記中心軸線を含む断面輪郭において前記中心軸線からの距離が大きくなる方向に突出する凸曲面の外周面を有し、前記胴部は、前記中心軸線を含む断面輪郭において前記中心軸線からの距離が小さくなる方向に窪み前記凸曲面に接続された凹曲面の外周面を有し、前記底部は、前記中心軸線と略平行で前記凹曲面に接続された外周面を有し、前記略オーバル形状の長軸方向における前記胴部の最小幅をａ、前記長軸方向における前記肩部の最大幅をｃ、前記長軸方向における前記底部の幅をｂ、前記略オーバル形状の短軸方向における前記胴部の最小幅をｆ、前記短軸方向における前記肩部の最大幅をｈ、前記短軸方向における前記底部の幅をｇとすると、ｃ＞ｂ＞ａ、および、ｇ＞ｈ＞ｆの関係を満足することを特徴とする容器が提供される。   According to a first aspect of the present invention, there is provided a bottle-like container formed of a synthetic resin and having an opening, a shoulder, a trunk, and a bottom disposed along a central axis, wherein the shoulder, the trunk The section and the bottom are substantially oval in cross-sectional contour perpendicular to the central axis, and the shoulder is a convex curved surface protruding in a direction in which the distance from the central axis increases in the cross-sectional contour including the central axis. The body portion has a concave outer peripheral surface that is recessed in a direction in which the distance from the central axis decreases in a cross-sectional contour including the central axis and connected to the convex curved surface, and the bottom is An outer peripheral surface substantially parallel to the central axis and connected to the concave curved surface, wherein a is the minimum width of the body portion in the major axis direction of the substantially oval shape, and the maximum width of the shoulder portion in the major axis direction C, the bottom in the major axis direction When the width is b, the minimum width of the body portion in the minor axis direction of the substantially oval shape is f, the maximum width of the shoulder portion in the minor axis direction is h, and the width of the bottom portion in the minor axis direction is g. A container characterized by satisfying the relationship of c> b> a and g> h> f is provided.

また、上記本発明の一態様に係る容器において、１．０＞（ａ／ｂ）≧０．８５の関係を満足することを特徴とする。   In the container according to one embodiment of the present invention, the relationship of 1.0> (a / b) ≧ 0.85 is satisfied.

また、上記本発明の一態様に係る容器において、０．９５≧（ａ／ｂ）≧０．８５の関係を満足することを特徴とする。   In the container according to one embodiment of the present invention, the relationship of 0.95 ≧ (a / b) ≧ 0.85 is satisfied.

また、上記本発明の一態様に係る容器において、前記長軸方向における、前記胴部の最小幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｄ、前記長軸方向における前記肩部の最大幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｅとすると、０．５７≧（ｄ／ｅ）≧０．２３の関係を満足することを特徴とする。   In the container according to the aspect of the present invention, in the major axis direction, the distance in the central axis direction between the position of the minimum width of the trunk portion and the upper end position of the outer peripheral surface of the bottom portion is d, and the major axis When the distance in the central axis direction between the position of the maximum width of the shoulder portion in the direction and the upper end position of the outer peripheral surface of the bottom portion is e, the relationship of 0.57 ≧ (d / e) ≧ 0.23 is satisfied. It is characterized by that.

また、上記本発明の一態様に係る容器において、前記短軸方向における、前記胴部の最小幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｉ、前記短軸方向における前記肩部の最大幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｊとすると、０．６２≧（ｉ／ｊ）≧０．３０の関係を満足することを特徴とする。   In the container according to the aspect of the present invention, in the minor axis direction, the distance in the central axis direction between the position of the minimum width of the trunk portion and the upper end position of the outer peripheral surface of the bottom portion is i, the minor axis If the distance in the central axis direction between the position of the maximum width of the shoulder in the direction and the upper end position of the outer peripheral surface of the bottom is j, the relationship of 0.62 ≧ (i / j) ≧ 0.30 is satisfied. It is characterized by that.

また、上記本発明の一態様に係る容器において、前記胴部の前記短軸方向両側に配置された外周面の少なくとも一方には、前記胴部の長軸方向の両側に配置された外周面と連続的な曲率で接続された第１面と、前記第１面と曲率が非連続的な曲率で接続され前記第１面との境界に稜線を形成する第２面とが設けられ、前記境界は、前記長軸方向の略中心位置を基点として両外側に向かうに従って、前記中心軸線方向の距離が漸次広がるＶ字状にそれぞれ配置されていることを特徴とする。   Further, in the container according to one aspect of the present invention, at least one of the outer peripheral surfaces disposed on both sides in the minor axis direction of the trunk portion includes an outer circumferential surface disposed on both sides in the major axis direction of the trunk portion. A first surface connected with a continuous curvature, and a second surface that is connected to the first surface with a non-continuous curvature and forms a ridge line at the boundary between the first surface and the boundary. Are arranged in a V shape in which the distance in the direction of the central axis gradually increases toward the outer sides with the approximate center position in the major axis direction as a base point.

また、上記本発明の一態様に係る容器において、前記境界の基点の位置は、前記中心軸線方向における前記胴部の最小幅の位置近傍に配置されていることを特徴とする。   In the container according to one aspect of the present invention, the base point of the boundary is arranged in the vicinity of the position of the minimum width of the body portion in the central axis direction.

本発明では、軸直圧縮に対する高い強度を有する断面がオーバル形状の容器を提供することが可能になる。   According to the present invention, it is possible to provide a container having an oval cross section having a high strength against axial compression.

本発明の一実施形態にかかる容器１の（ａ）は正面図、（ｂ）は右側面図である。(A) of the container 1 concerning one Embodiment of this invention is a front view, (b) is a right view. （ａ）は図１（ａ）におけるＡ−Ａ線視断面図、（ｂ）は、図１（ａ）におけるＢ−Ｂ線視断面図、（ｃ）は、図１（ａ）におけるＣ−Ｃ線視断面図である。1A is a cross-sectional view taken along line AA in FIG. 1A, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. FIG. 容器１の寸法を示す（ａ）は正面図、（ｂ）は右側面図である。(A) which shows the dimension of the container 1 is a front view, (b) is a right view. 比較例１に係る容器の（ａ）は正面図、（ｂ）は右側面図である。(A) of the container which concerns on the comparative example 1 is a front view, (b) is a right view.

以下、本発明の容器の実施の形態を、図１ないし図４を参照して説明する。
なお、以下の実施形態は、本発明の一態様を示すものであり、この発明を限定するものではなく、本発明の技術的思想の範囲内で任意に変更可能である。また、以下の図面においては、各構成をわかりやすくするために、実際の構造と各構造における縮尺や数等を異ならせている。 Hereinafter, embodiments of the container of the present invention will be described with reference to FIGS. 1 to 4.
The following embodiments show one aspect of the present invention and do not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. Moreover, in the following drawings, in order to make each configuration easy to understand, the actual structure is different from the scale and number of each structure.

図１（ａ）は、本発明の一実施形態にかかる容器１の正面図である。図１（ｂ）は、容器１の右側面図である。
図１（ａ）、（ｂ）に示すように、容器１は、正立状態で、上から順に開口部１０と、肩部２０と、胴部３０と、底部５０とが中心軸線Ｊに沿って配置されたボトル状に形成されている。容器１は、開口部１０と、肩部２０と、胴部３０と、底部５０とが合成樹脂により所定厚さで一体に成形されたものである。 Fig.1 (a) is a front view of the container 1 concerning one Embodiment of this invention. FIG. 1B is a right side view of the container 1.
As shown in FIGS. 1A and 1B, the container 1 is in an upright state, and the opening 10, the shoulder 20, the trunk 30, and the bottom 50 are along the central axis J in order from the top. It is formed in the shape of a bottle arranged. In the container 1, the opening 10, the shoulder 20, the body 30, and the bottom 50 are integrally formed with a predetermined thickness from a synthetic resin.

容器１としては、例えば、ポリエチレン、ポリプロピレン等のポリオレフィン、ポリエチレンテレフタレート等のポリエステルやこれらを混合した合成樹脂を原料樹脂とし、この原料樹脂をブロー成形又は射出成形することにより製造される。   As the container 1, for example, polyolefin such as polyethylene and polypropylene, polyester such as polyethylene terephthalate, or synthetic resin obtained by mixing these materials is used as a raw material resin, and this raw material resin is manufactured by blow molding or injection molding.

以下の説明においては、中心軸線Ｊが鉛直方向（上下方向）に延在するものとして説明するが、これは、説明の便宜のために上下方向を定義したに過ぎず、本発明に係る容器１の使用時の向きを限定しない。   In the following description, the center axis J is described as extending in the vertical direction (up and down direction). However, this is merely a definition of the up and down direction for convenience of description, and the container 1 according to the present invention. There is no limitation on the orientation when using.

開口部１０は、上端に形成された円筒状のものであり、容器内部の内容物を注出するものである。内容物としては、例えば、シャンプー、リンス、ボディーソープ、台所用洗剤、液体衣料洗剤、柔軟剤、洗口剤や洗眼剤等の液体が挙げられる。円筒状とは、平面視において真円形の筒のみならず、平面視楕円形を含む概念である。開口部１０は、キャップ（不図示）が装着される部材である。例えば、キャップが開口部１０に螺合するものである場合には、注出部１０の外周にネジ部が形成される。   The opening part 10 is a cylindrical thing formed in the upper end, and pours out the contents inside a container. Examples of the contents include liquids such as shampoo, rinse, body soap, kitchen detergent, liquid clothing detergent, softener, mouthwash and eye wash. The term “cylindrical” is a concept that includes not only a perfectly circular cylinder in a plan view but also an ellipse in a plan view. The opening 10 is a member to which a cap (not shown) is attached. For example, when the cap is screwed into the opening 10, a screw portion is formed on the outer periphery of the extraction portion 10.

図２（ａ）は、図１（ａ）におけるＡ−Ａ線視断面図であり、肩部２０の外周面を水平面で断面した輪郭を示す図である。図２（ａ）に示すように、肩部２０の断面輪郭は、略オーバル形状であり、オーバル形状の短軸方向（以下、単に短軸方向と称する）の背面側に配置された外周面２１（図１（ａ）では図示せず）、短軸方向の正面側に配置された外周面２２、オーバル形状の長軸方向（以下、単に長軸方向と称する）の右側に配置された外周面２３、および長軸方向の左側に配置された外周面２４を有している。   FIG. 2A is a cross-sectional view taken along line AA in FIG. 1A and is a diagram illustrating an outline in which the outer peripheral surface of the shoulder 20 is cut in a horizontal plane. As shown in FIG. 2A, the cross-sectional contour of the shoulder portion 20 is substantially oval, and the outer peripheral surface 21 disposed on the back side of the oval short axis direction (hereinafter simply referred to as the short axis direction). (Not shown in FIG. 1A), outer peripheral surface 22 arranged on the front side in the short axis direction, outer peripheral surface arranged on the right side of the oval major axis direction (hereinafter simply referred to as the major axis direction) 23, and an outer peripheral surface 24 disposed on the left side in the long axis direction.

なお、本実施形態におけるオーバル形状とは、例えば、卵形状、楕円形状、長円形状等の形状である。   In addition, the oval shape in the present embodiment is, for example, an egg shape, an oval shape, an oval shape, or the like.

図１（ａ）、（ｂ）に示されるように、肩部２０の外周面２１〜２４は、中心軸線Ｊを含む断面輪郭において、中心軸線からの距離が大きくなる方向に突出する凸曲面に形成されている。また、図２（ａ）に示されるように、背面側の外周面２１は、隣り合う外周面２３、２４よりも小さな曲率を有し、且つ、外周面２３、２４とは連続的な曲率をもって接続されている。すなわち、外周面２１と外周面２３、２４とは、相互に連続的に変化する曲率で接続されている。   As shown in FIGS. 1A and 1B, the outer peripheral surfaces 21 to 24 of the shoulder portion 20 are convex curved surfaces that protrude in the direction in which the distance from the central axis increases in the cross-sectional contour including the central axis J. Is formed. 2A, the outer peripheral surface 21 on the back side has a smaller curvature than the adjacent outer peripheral surfaces 23 and 24, and has a continuous curvature with the outer peripheral surfaces 23 and 24. It is connected. That is, the outer peripheral surface 21 and the outer peripheral surfaces 23 and 24 are connected with a curvature that continuously changes from each other.

正面側に配置された外周面２２は、外周面２１および隣り合う外周面２３、２４よりも小さな曲率を有し、且つ、外周面２３、２４とは非連続的な曲率をもって接続されている。すなわち、外周面２２と外周面２３とは、境界に稜線２５Ｒが形成される曲率で接続され、外周面２２と外周面２４とは、境界に稜線２５Ｌが形成される曲率で接続されている。   The outer peripheral surface 22 disposed on the front side has a smaller curvature than the outer peripheral surface 21 and the adjacent outer peripheral surfaces 23 and 24, and is connected to the outer peripheral surfaces 23 and 24 with a discontinuous curvature. That is, the outer peripheral surface 22 and the outer peripheral surface 23 are connected with a curvature that forms a ridge line 25R at the boundary, and the outer peripheral surface 22 and the outer peripheral surface 24 are connected with a curvature that forms a ridge line 25L at the boundary.

図２（ｂ）は、図１（ａ）におけるＢ−Ｂ線視断面図であり、胴部３０の外周面を水平面で断面した輪郭を示す図である。図２（ｂ）に示すように、胴部３０の断面輪郭は、略オーバル形状であり、オーバル形状の短軸方向の背面側に配置された外周面３１、短軸方向の正面側に配置された外周面３２、３６Ｒ、３６Ｌ、長軸方向の右側に配置された外周面３３、および長軸方向の左側に配置された外周面３４を有している。   FIG. 2B is a cross-sectional view taken along the line BB in FIG. 1A, and is a diagram illustrating an outline in which the outer peripheral surface of the trunk portion 30 is cut in a horizontal plane. As shown in FIG. 2 (b), the cross-sectional contour of the body portion 30 is substantially oval, and is disposed on the outer peripheral surface 31 arranged on the back side in the short axis direction of the oval shape and on the front side in the short axis direction. The outer peripheral surfaces 32, 36R, and 36L, the outer peripheral surface 33 disposed on the right side in the long axis direction, and the outer peripheral surface 34 disposed on the left side in the long axis direction.

図１（ａ）、（ｂ）に示されるように、胴部３０の外周面３１〜３４、３６Ｒ、３６Ｌは、中心軸線Ｊを含む断面輪郭において、中心軸線からの距離が小さくなる方向に窪む凹曲面に形成されている。背面側の外周面３１は、肩部２０の外周面２１に相互に連続的に変化する曲率で接続されている。また、外周面３１は、隣り合う外周面３３、３４よりも小さな曲率を有し、外周面３３、３４と相互に連続的に変化する曲率で接続されている。外周面３３は、肩部２０の外周面２３に相互に連続的に変化する曲率で接続されている。外周面３４は、肩部２０の外周面２４に相互に連続的に変化する曲率で接続されている。外周面（第１面）３６Ｒは、隣り合う外周面３３よりも小さな曲率を有し、外周面３３と相互に連続的に変化する曲率で接続されている。外周面（第１面）３６Ｌは、隣り合う外周面３４よりも小さな曲率を有し、外周面３４と相互に連続的に変化する曲率で接続されている。   As shown in FIGS. 1A and 1B, the outer peripheral surfaces 31 to 34, 36 </ b> R, and 36 </ b> L of the trunk portion 30 are recessed in a direction in which the distance from the central axis decreases in the cross-sectional contour including the central axis J. It is formed in a concave curved surface. The outer peripheral surface 31 on the back side is connected to the outer peripheral surface 21 of the shoulder portion 20 with a curvature that continuously changes from each other. Moreover, the outer peripheral surface 31 has a smaller curvature than the adjacent outer peripheral surfaces 33 and 34, and is connected with the outer peripheral surfaces 33 and 34 with the curvature which changes mutually continuously. The outer peripheral surface 33 is connected to the outer peripheral surface 23 of the shoulder 20 with a curvature that continuously changes from each other. The outer peripheral surface 34 is connected to the outer peripheral surface 24 of the shoulder 20 with a curvature that continuously changes from each other. The outer peripheral surface (first surface) 36 </ b> R has a smaller curvature than the adjacent outer peripheral surface 33 and is connected to the outer peripheral surface 33 with a curvature that continuously changes. The outer peripheral surface (first surface) 36 </ b> L has a smaller curvature than the adjacent outer peripheral surface 34, and is connected to the outer peripheral surface 34 with a curvature that continuously changes.

外周面（第２面）３２は、肩部２０の外周面２２に相互に連続的に変化する曲率で接続されている。外周面３２は、外周面３１よりも小さな曲率を有している。外周面３２は、外周面３６Ｒ、３６Ｌとは非連続的な曲率をもって接続されている。すなわち、外周面３２と外周面３６Ｒとは、境界に稜線３５Ｒが形成される曲率で接続され、外周面３２と外周面３６Ｌとは、境界に稜線３５Ｌが形成される曲率で接続されている。   The outer peripheral surface (second surface) 32 is connected to the outer peripheral surface 22 of the shoulder portion 20 with a curvature that continuously changes from each other. The outer peripheral surface 32 has a smaller curvature than the outer peripheral surface 31. The outer peripheral surface 32 is connected to the outer peripheral surfaces 36R and 36L with a discontinuous curvature. That is, the outer peripheral surface 32 and the outer peripheral surface 36R are connected with a curvature that forms a ridge line 35R at the boundary, and the outer peripheral surface 32 and the outer peripheral surface 36L are connected with a curvature that forms a ridge line 35L at the boundary.

図１（ａ）に示すように、外周面３２は、中心軸線Ｊ方向の位置に関して、長軸方向における胴部３０の幅が最も狭くなる位置近傍を最小幅として、上方および下方に向かうに従って漸次幅広となる形状に形成されている。換言すると、外周面３２と外周面３６Ｒとの境界に形成された稜線３５Ｒは、中心軸線Ｊ方向の位置に関して長軸方向における胴部３０の幅が最も狭くなり、長軸方向に関して胴部３０の中央近傍の位置を基点として、長軸方向の右外側に向かうに従って、中心軸線Ｊ方向の距離が漸次拡がるＶ字状に配置されている。同様に、外周面３２と外周面３６Ｌとの境界に形成された稜線３５Ｌは、中心軸線Ｊ方向の位置に関して長軸方向における胴部３０の幅が最も狭くなり、長軸方向に関して胴部３０の中央近傍の位置を基点として、長軸方向の左外側に向かうに従って、中心軸線Ｊ方向の距離が漸次拡がるＶ字状に配置されている。   As shown in FIG. 1A, the outer peripheral surface 32 gradually increases in the upward and downward directions, with the position near the position where the width of the body 30 in the major axis direction becomes the smallest as the minimum width with respect to the position in the central axis J direction. It is formed in a wide shape. In other words, the ridge line 35R formed at the boundary between the outer peripheral surface 32 and the outer peripheral surface 36R has the narrowest width of the body 30 in the major axis direction with respect to the position in the central axis J direction, and the ridge line 35R of the body 30 in the major axis direction. With the position in the vicinity of the center as the base point, the distance in the central axis J direction is gradually increased toward the right outer side in the long axis direction. Similarly, the ridgeline 35L formed at the boundary between the outer peripheral surface 32 and the outer peripheral surface 36L has the narrowest width of the body 30 in the major axis direction with respect to the position in the central axis J direction, and the ridgeline 35L of the body 30 in the major axis direction. With the position in the vicinity of the center as a base point, the distance in the central axis J direction is gradually increased toward the left outer side in the long axis direction.

そのため、胴部３０においては、長軸方向の中央に配置された外周面３２の最小幅を挟んで、中心軸線Ｊの周囲に外周面３６Ｒ、３３、３１、３４、３６Ｌが連続的に変化する曲率で順次滑らかに接続された周面が形成されている。   Therefore, in the body portion 30, the outer peripheral surfaces 36R, 33, 31, 34, and 36L continuously change around the central axis J with the minimum width of the outer peripheral surface 32 disposed in the center in the long axis direction being sandwiched. A peripheral surface is formed that is smoothly connected in order with curvature.

図２（ｃ）は、図１（ａ）におけるＣ−Ｃ線視断面図であり、底部５０の外周面を水平面で断面した輪郭を示す図である。図２（ｃ）に示すように、底部５０の断面輪郭は、略オーバル形状であり、オーバル形状の短軸方向の背面側に配置された外周面５１、短軸方向の正面側に配置された外周面５２、長軸方向の右側に配置された外周面５３、および長軸方向の左側に配置された外周面５４を有している。外周面５１と外周面５２の曲率は、略同一であり、外周面５３、５４の曲率よりも小さい。   FIG. 2C is a cross-sectional view taken along the line CC in FIG. 1A, and is a diagram illustrating an outline in which the outer peripheral surface of the bottom portion 50 is cut in a horizontal plane. As shown in FIG. 2C, the cross-sectional contour of the bottom 50 is substantially oval, and is arranged on the outer peripheral surface 51 arranged on the back side in the short axis direction of the oval shape and on the front side in the short axis direction. It has the outer peripheral surface 52, the outer peripheral surface 53 arrange | positioned at the right side of a long-axis direction, and the outer peripheral surface 54 arrange | positioned at the left side of a long-axis direction. The curvatures of the outer peripheral surface 51 and the outer peripheral surface 52 are substantially the same, and are smaller than the curvatures of the outer peripheral surfaces 53 and 54.

背面側の外周面５１は、隣り合う外周面５３、５４と相互に連続的に変化する曲率で接続されている。正面側の外周面５２は、隣り合う外周面５３、５４と相互に連続的に変化する曲率で接続されている。   The outer peripheral surface 51 on the back side is connected to the adjacent outer peripheral surfaces 53 and 54 with curvatures that continuously change from each other. The outer peripheral surface 52 on the front side is connected to the adjacent outer peripheral surfaces 53 and 54 with curvatures that continuously change from each other.

図１（ａ）、（ｂ）に示されるように、底部５０の外周面５１〜５４は、中心軸線Ｊと略平行である。外周面５１〜５４の中心軸線Ｊ方向の長さは、特に限定されないが、３ｍｍ〜２０ｍｍを例示できる。背面側の外周面５１は、中心軸線Ｊを含む断面輪郭において、胴部３０の外周面３１と非連続的な曲率をもって接続されている。正面側の外周面５２は、胴部３０の外周面３２と非連続的な曲率をもって接続されている。外周面５３は、胴部３０の外周面３３と非連続的な曲率をもって接続されている。外周面５４は、胴部３０の外周面３４と非連続的な曲率をもって接続されている。   As shown in FIGS. 1A and 1B, the outer peripheral surfaces 51 to 54 of the bottom 50 are substantially parallel to the central axis J. Although the length of the outer peripheral surfaces 51-54 in the central axis J direction is not particularly limited, 3 mm to 20 mm can be exemplified. The outer peripheral surface 51 on the back side is connected to the outer peripheral surface 31 of the body 30 with a discontinuous curvature in a cross-sectional contour including the central axis J. The outer peripheral surface 52 on the front side is connected to the outer peripheral surface 32 of the body 30 with a discontinuous curvature. The outer peripheral surface 53 is connected with the outer peripheral surface 33 of the trunk | drum 30 with a discontinuous curvature. The outer peripheral surface 54 is connected to the outer peripheral surface 34 of the trunk portion 30 with a discontinuous curvature.

図３は、容器１の寸法を示す（ａ）は正面図、（ｂ）は右側面図である。
図３（ａ）に示すように、長軸方向における胴部３０の最小幅をａ、長軸方向における２０肩部の最大幅をｂ、長軸方向における底部５０の幅をｃ、短軸方向における胴部３０の最小幅をｆ、短軸方向における２０肩部の最大幅をｈ、短軸方向における底部５０の幅をｇとすると、容器１は下式（１）および下式（２）を満足することが好ましい。
ｃ＞ｂ＞ａ …（１）
ｇ＞ｈ＞ｆ …（２） 3A and 3B are front views and FIG. 3B and FIG.
As shown in FIG. 3A, the minimum width of the body 30 in the long axis direction is a, the maximum width of the 20 shoulders in the long axis direction is b, the width of the bottom 50 in the long axis direction is c, and the short axis direction Container 1 is represented by the following formula (1) and the following formula (2), where f is the minimum width of the body 30 and h is the maximum width of the 20 shoulders in the minor axis direction and g is the width of the bottom 50 in the minor axis direction. Is preferably satisfied.
c>b> a (1)
g>h> f (2)

上記構成の容器１を中心軸線Ｊ方向に圧縮（軸直圧縮）すると、中心軸線Ｊ方向における胴部３０の最小幅ａ、最小幅ｆとなる位置に、幅ｃと幅ａとの差分および幅ｈと幅ｆとの差分に応じて中心軸線Ｊに接近する方向に向かって傾斜する第１角度θ１１、θ１２で荷重が加わる。また、底部５０においては、幅ａと幅ｂとの差分および幅ｆと幅ｇとの差分に応じて中心軸線Ｊから離間する方向に傾斜する第２角度θ２１、θ２２で荷重が加わる。容器１が式（１）、（２）を満足せず、例えば、ｃ≦ａあるいはｇ≦ｆを満足する場合には、第１角度θ１１、θ１２から第２角度θ２１、θ２２への角度変化が大きいため、軸直圧縮に対する強度が小さく、幅ａ、幅ｆとなる位置にて座屈する可能性がある。これに対して、本実施形態の容器１は、式（１）、（２）を満足するため、第１角度θ１１、θ１２から第２角度θ２１、θ２２への角度変化が小さく、軸直圧縮に対する強度を大きくすることができる。   When the container 1 having the above-described configuration is compressed in the central axis J direction (axial direct compression), the difference between the width c and the width a and the width at the position where the minimum width a and the minimum width f of the body 30 in the central axis J direction are obtained. A load is applied at first angles θ11 and θ12 that are inclined in a direction approaching the central axis J in accordance with the difference between h and width f. Further, at the bottom 50, a load is applied at the second angles θ21 and θ22 that are inclined in the direction away from the central axis J in accordance with the difference between the width a and the width b and the difference between the width f and the width g. When the container 1 does not satisfy the expressions (1) and (2), for example, when c ≦ a or g ≦ f is satisfied, the angle change from the first angle θ11, θ12 to the second angle θ21, θ22 occurs. Since it is large, the strength against direct axial compression is small, and there is a possibility of buckling at positions where the width a and the width f are obtained. On the other hand, since the container 1 of the present embodiment satisfies the expressions (1) and (2), the change in the angle from the first angle θ11, θ12 to the second angle θ21, θ22 is small, and the axial compression is not affected. The strength can be increased.

特に、上記の容器１においては、下式（３）を満足することが好ましい。
１．０＞（ａ／ｂ）≧０．８５ …（３）
（ａ／ｂ）で表される数値が０．８５未満の場合には、上述した第２角度θ２１が大きくなることから、第１角度θ１１から第２角度θ２１への角度変化も大きくなり、軸直圧縮に対する強度が小さくなる。例えば、容器１が４ｍｍ変位する時に座屈する可能性がある。一方、（ａ／ｂ）で表される数値が１．０以上の場合には、胴部３０におけるくびれ形状がなくなりデザイン性が低下してしまう。これに対して、本実施形態の容器１は、式（３）を満足することにより、デザイン性の低下を招くことなく軸直圧縮に対する強度を大きくすることができる。 In particular, the container 1 preferably satisfies the following expression (3).
1.0> (a / b) ≧ 0.85 (3)
When the numerical value represented by (a / b) is less than 0.85, since the second angle θ21 described above increases, the angle change from the first angle θ11 to the second angle θ21 also increases, and the axis The strength against direct compression is reduced. For example, there is a possibility of buckling when the container 1 is displaced by 4 mm. On the other hand, when the numerical value represented by (a / b) is 1.0 or more, the constricted shape in the trunk portion 30 is lost, and the design is deteriorated. On the other hand, the container 1 of the present embodiment can increase the strength against axial compression without causing deterioration in designability by satisfying the expression (3).

さらに、上記の容器１においては、０．９５≧（ａ／ｂ）≧０．８５の関係を満足することがより好ましい。これにより、くびれの視認性がさらに高まり、デザイン的に好ましい。   Furthermore, in the container 1 described above, it is more preferable that the relationship of 0.95 ≧ (a / b) ≧ 0.85 is satisfied. This further improves the visibility of the constriction, which is preferable in terms of design.

また、底部５０における外周面５１〜５４が中心軸線Ｊと平行ではなく、例えば、断面輪郭において底面に対して外周面が鋭角に交差する場合には、角度によっては軸直圧縮に対する強度が小さくなり底部５０にて座屈する可能性がある。一方、底部５０において底面に対して外周面が鈍角に交差する場合には、外周面は上端部が下端部に対して広がって（拡径して）形成される。そして、当該上端部に接続される胴部３０の外周面は、下端部が広がって（拡径して）形成される。そのため、胴部３０の外周面と底部５０の外周面とは、いずれも外側に拡径する傾きで接続されるため、軸直圧縮に対する強度が小さくなり胴部３０と底部５０との接続部にて座屈する可能性がある。これに対して、本実施形態の容器１は、外周面５１〜５４が中心軸線Ｊと平行であるため、軸直圧縮に対する強度を大きくすることができる。   In addition, when the outer peripheral surfaces 51 to 54 in the bottom 50 are not parallel to the central axis J, for example, when the outer peripheral surface intersects an acute angle with respect to the bottom surface in the cross-sectional outline, the strength against axial compression is reduced depending on the angle. There is a possibility of buckling at the bottom 50. On the other hand, when the outer peripheral surface intersects an obtuse angle with respect to the bottom surface at the bottom portion 50, the outer peripheral surface is formed such that the upper end portion is expanded (expanded) with respect to the lower end portion. And the outer peripheral surface of the trunk | drum 30 connected to the said upper end part is formed so that a lower end part may spread (expanding diameter). Therefore, since the outer peripheral surface of the trunk portion 30 and the outer peripheral surface of the bottom portion 50 are both connected with an inclination that expands outward, the strength against axial direct compression is reduced, and the connecting portion between the trunk portion 30 and the bottom portion 50 is reduced. There is a possibility of buckling. On the other hand, since the outer peripheral surfaces 51-54 are parallel to the central axis J, the container 1 of the present embodiment can increase the strength against axial compression.

また、上記の容器１においては、長軸方向における、胴部３０が最小幅ａとなる位置と底部５０の外周面５３、５４の上端位置との中心軸線Ｊ方向の距離をｄとし、長軸方向における肩部２０が最大幅ｃとなる位置と底部５０の外周面５３、５４の上端位置との中心軸線Ｊ方向の距離をｅとすると、下式（４）を満足することが好ましい。
０．５７≧（ｄ／ｅ）≧０．２３ …（４） In the container 1, the distance in the central axis J direction between the position where the trunk portion 30 has the minimum width a and the upper end positions of the outer peripheral surfaces 53 and 54 of the bottom 50 in the major axis direction is d, and the major axis When the distance in the central axis J direction between the position where the shoulder portion 20 in the direction becomes the maximum width c and the upper end positions of the outer peripheral surfaces 53 and 54 of the bottom portion 50 is e, it is preferable to satisfy the following expression (4).
0.57 ≧ (d / e) ≧ 0.23 (4)

同様に、短軸方向における、胴部３０が最小幅ｆとなる位置と底部５０の外周面５１、５２の上端位置との中心軸線Ｊ方向の距離をｉ、短軸方向における肩部２０が最大幅ｈとなる位置と底部５０の外周面５１、５２の上端位置との中心軸線Ｊ方向の距離をｊとすると、下式（５）を満足することが好ましい。
０．６２≧（ｉ／ｊ）≧０．３０ …（５） Similarly, in the minor axis direction, the distance in the central axis J direction between the position where the body 30 has the minimum width f and the upper end positions of the outer peripheral surfaces 51 and 52 of the bottom 50 is i, and the shoulder 20 in the minor axis direction is the largest. If the distance in the central axis J direction between the position where h is substantially h and the upper end positions of the outer peripheral surfaces 51 and 52 of the bottom 50 is j, it is preferable that the following expression (5) is satisfied.
0.62 ≧ (i / j) ≧ 0.30 (5)

上記の式（４）および式（５）を満足させることにより、座屈に対する挙動を向上させつつ、デザインの観点からくびれの視認性も向上させることが可能になる。   By satisfying the above formulas (4) and (5), it is possible to improve the visibility of the constriction from the viewpoint of design while improving the behavior against buckling.

また、本実施形態の容器１は、胴部３０において、長軸方向の中央に配置された外周面３２の最小幅を挟んで、中心軸線Ｊの周囲に外周面３６Ｒ、３３、３１、３４、３６Ｌが連続的に変化する曲率で順次滑らかに接続された周面が、左右にＶ字状に拡がる稜線３５Ｒ、３５Ｌの間に形成されているため、当該外周面３６Ｒ、３３、３１、３４、３６Ｌを把持した際に、指部が稜線３５Ｒ、３５Ｌに掛かるため、滑ることなくしっかりと容器１を保持することができる。
［実施例］ Further, in the container 1 of the present embodiment, the outer peripheral surface 36R, 33, 31, 34, around the central axis J is sandwiched between the minimum width of the outer peripheral surface 32 disposed at the center in the long axis direction in the trunk portion 30. Since the peripheral surface that is sequentially and smoothly connected with the curvature that 36L continuously changes is formed between the ridge lines 35R and 35L that expand in the left and right directions, the outer peripheral surfaces 36R, 33, 31, 34, When the 36L is gripped, the finger portion hangs on the ridge lines 35R and 35L, so that the container 1 can be firmly held without slipping.
[Example]

実施例１は、表１に記載された仕様に従って容器１を製造したものである。実施例２〜５は、実施例１の容器１に対して幅ａの値（すなわち、ａ／ｂの値）を変えた容器１である。実施例６〜９は、実施例１の容器１に対して距離ｄと距離ｉの値（すなわち、ｄ／ｅの値とｉ／ｊの値）を変えた容器１である。比較例１は、図４（ａ）に示す正面図、図４（ｂ）に示す右側面図に示される容器を表１に記載された仕様に従って製造したものである。比較例２〜４は、実施例１の容器１に対して幅ａの値（すなわち、ａ／ｂの値）を変えた容器１である。比較例１の容器は、図４（ａ）の部分拡大図に示されるように、底面とは鈍角になる角度θで底部の外周面が形成されている。   In Example 1, the container 1 was manufactured according to the specifications described in Table 1. Examples 2-5 are the containers 1 which changed the value of width a (namely, the value of a / b) with respect to the container 1 of Example 1. FIG. Examples 6-9 are the containers 1 which changed the value of the distance d and the distance i (namely, the value of d / e and the value of i / j) with respect to the container 1 of Example 1. FIG. In Comparative Example 1, the container shown in the front view shown in FIG. 4A and the right side view shown in FIG. 4B is manufactured according to the specifications described in Table 1. Comparative Examples 2 to 4 are containers 1 in which the value of the width a (that is, the value of a / b) is changed from that of the container 1 of Example 1. As shown in the partially enlarged view of FIG. 4A, the container of Comparative Example 1 has the outer peripheral surface of the bottom portion at an angle θ that becomes an obtuse angle with the bottom surface.

（評価方法）
上記実施例および比較例の容器に対して、テンシロン圧縮試験機（RTG-1250）にて２００Ｎの軸直荷重を１２５ｍｍ／ｍｉｎにて付与し、変位部位については目視にて測定した。
また、容器１に対して軸直荷重を付与したときに、４ｍｍ以下の変位で座屈した場合を「×」とし、４ｍｍを超える変位で座屈した場合を「○」とした。 (Evaluation method)
A 200 N axial load was applied to the containers of the above Examples and Comparative Examples at 125 mm / min with a Tensilon compression tester (RTG-1250), and the displacement sites were measured visually.
In addition, when a direct axial load was applied to the container 1, the case where it buckled with a displacement of 4 mm or less was “x”, and the case where it buckled with a displacement exceeding 4 mm was “◯”.

比較例１〜４の容器については、軸直荷重の付与により、最小幅ａが縮小し、最小幅ｆが拡大する方向に胴部のくびれ部が変形し外観が低下した。また、比較例１〜４の容器については、軸直荷重の付与による底部の変形は観察されなかった。一方、実施例１〜９の容器１については、座屈するまでの変位および反力値が大きく、軸直荷重の付与による胴部のくびれ部が変形する前に底部の変形が観察され、軸直圧縮に対する高い強度を有することが確認できた。   With respect to the containers of Comparative Examples 1 to 4, by applying the axial load, the minimum width a was reduced, and the constricted portion of the body portion was deformed in the direction in which the minimum width f was increased, and the appearance was deteriorated. Moreover, about the container of Comparative Examples 1-4, the deformation | transformation of the bottom part by provision of an axial direct load was not observed. On the other hand, for the containers 1 of Examples 1 to 9, the displacement and reaction force values until buckling were large, and the deformation of the bottom was observed before the constriction of the trunk due to the application of the axial load, and the axial It was confirmed to have high strength against compression.

以上、添付図面を参照しながら本発明に係る好適な実施形態について説明したが、本発明は係る例に限定されないことは言うまでもない。上述した例において示した各構成部材の諸形状や組み合わせ等は一例であって、本発明の主旨から逸脱しない範囲において設計要求等に基づき種々変更可能である。   As described above, the preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

例えば、上記実施形態では、稜線２５Ｌ、２５Ｒ、３５Ｌ、３５Ｒが形成される外周面を有する容器１を例示したが、この構成に限定されるものではなく、例えば、稜線が形成されず、中心軸線Ｊの周囲の外周面が全周に亘って連続的に変化する曲率で滑らかに接続される構成であってもよい。   For example, in the above embodiment, the container 1 having the outer peripheral surface on which the ridge lines 25L, 25R, 35L, and 35R are formed is illustrated, but the present invention is not limited to this configuration. The outer peripheral surface around J may be smoothly connected with a curvature that continuously changes over the entire circumference.

１…容器、 １０…開口部、 ２０…肩部、 ３０…胴部、 ３２…外周面（第２面）、 ３５Ｌ、３５Ｒ…稜線、 ３６Ｌ、３６Ｒ…外周面（第１面）、 ５０…底部、 Ｊ…中心軸線   DESCRIPTION OF SYMBOLS 1 ... Container, 10 ... Opening part, 20 ... Shoulder part, 30 ... Body part, 32 ... Outer peripheral surface (2nd surface), 35L, 35R ... Ridge line, 36L, 36R ... Outer peripheral surface (1st surface), 50 ... Bottom , J ... central axis

Claims (7)

合成樹脂により形成され、中心軸線に沿って開口部、肩部、胴部、底部が配置されたボトル状の容器であって、
前記肩部、前記胴部および前記底部は、前記中心軸線と直交する断面輪郭が略オーバル形状であり、
前記肩部は、前記中心軸線を含む断面輪郭において前記中心軸線からの距離が大きくなる方向に突出する凸曲面の外周面を有し、
前記胴部は、前記中心軸線を含む断面輪郭において前記中心軸線からの距離が小さくなる方向に窪み前記凸曲面に接続された凹曲面の外周面を有し、
前記底部は、前記中心軸線と略平行で前記凹曲面に接続された外周面を有し、
前記略オーバル形状の長軸方向における前記胴部の最小幅をａ、前記長軸方向における前記肩部の最大幅をｃ、前記長軸方向における前記底部の幅をｂ、
前記略オーバル形状の短軸方向における前記胴部の最小幅をｆ、前記短軸方向における前記肩部の最大幅をｈ、前記短軸方向における前記底部の幅をｇとすると、
ｃ＞ｂ＞ａ、および、ｇ＞ｈ＞ｆ
の関係を満足することを特徴とする容器。 A bottle-shaped container formed of a synthetic resin and having an opening, a shoulder, a trunk, and a bottom arranged along the central axis,
The shoulder portion, the trunk portion, and the bottom portion have a substantially oval cross-sectional profile orthogonal to the central axis.
The shoulder portion has a convex curved outer peripheral surface protruding in a direction in which the distance from the central axis increases in a cross-sectional contour including the central axis,
The trunk portion has a concave curved outer peripheral surface that is recessed in a direction in which the distance from the central axis decreases in a cross-sectional contour including the central axis and connected to the convex curved surface,
The bottom portion has an outer peripheral surface connected to the concave curved surface substantially parallel to the central axis,
The minimum width of the trunk portion in the major axis direction of the substantially oval shape is a, the maximum width of the shoulder portion in the major axis direction is c, the width of the bottom portion in the major axis direction is b,
When the minimum width of the body portion in the minor axis direction of the substantially oval shape is f, the maximum width of the shoulder portion in the minor axis direction is h, and the width of the bottom portion in the minor axis direction is g.
c>b> a and g>h> f
A container characterized by satisfying the relationship. １．０＞（ａ／ｂ）≧０．８５
の関係を満足することを特徴とする請求項１記載の容器。 1.0> (a / b) ≧ 0.85
The container according to claim 1, wherein the following relationship is satisfied. ０．９５≧（ａ／ｂ）≧０．８５
の関係を満足することを特徴とする請求項２記載の容器。 0.95 ≧ (a / b) ≧ 0.85
The container according to claim 2, wherein the following relationship is satisfied. 前記長軸方向における、前記胴部の最小幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｄ、前記長軸方向における前記肩部の最大幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｅとすると、
０．５７≧（ｄ／ｅ）≧０．２３
の関係を満足することを特徴とする請求項２または３記載の容器。 The distance in the central axis direction between the position of the minimum width of the body portion and the upper end position of the outer peripheral surface of the bottom portion in the major axis direction is d, the position of the maximum width of the shoulder portion in the major axis direction and the bottom portion When the distance in the central axis direction to the upper end position of the outer peripheral surface is e,
0.57 ≧ (d / e) ≧ 0.23
The container according to claim 2 or 3, wherein the following relationship is satisfied. 前記短軸方向における、前記胴部の最小幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｉ、前記短軸方向における前記肩部の最大幅の位置と前記底部の外周面の上端位置との前記中心軸線方向の距離をｊとすると、
０．６２≧（ｉ／ｊ）≧０．３０
の関係を満足することを特徴とする請求項４記載の容器。 The distance in the central axis direction between the position of the minimum width of the body portion and the upper end position of the outer peripheral surface of the bottom portion in the short axis direction is i, the position of the maximum width of the shoulder portion in the short axis direction and the bottom portion When the distance in the central axis direction to the upper end position of the outer peripheral surface is j,
0.62 ≧ (i / j) ≧ 0.30
The container according to claim 4, wherein the following relationship is satisfied. 前記胴部の前記短軸方向両側に配置された外周面の少なくとも一方には、前記胴部の長軸方向の両側に配置された外周面と連続的な曲率で接続された第１面と、前記第１面と曲率が非連続的な曲率で接続され前記第１面との境界に稜線を形成する第２面とが設けられ、
前記境界は、前記長軸方向の略中心位置を基点として両外側に向かうに従って、前記中心軸線方向の距離が漸次広がるＶ字状にそれぞれ配置されていることを特徴とする請求項１から５のいずれか一項に記載の容器。 At least one of the outer peripheral surfaces disposed on both sides of the short axis direction of the trunk portion, a first surface connected with an outer peripheral surface disposed on both sides of the long axis direction of the trunk portion with a continuous curvature; A second surface that is connected to the first surface with a discontinuous curvature and forms a ridge line at a boundary with the first surface;
The said boundary is each arrange | positioned in the V shape which the distance of the said central axis direction spreads gradually as it goes to both outer sides from the approximate center position of the said major axis direction as a base point. The container according to any one of the above. 前記境界の基点の位置は、前記中心軸線方向における前記胴部の最小幅の位置近傍に配置されていることを特徴とする請求項６記載の容器。   The container according to claim 6, wherein the position of the base point of the boundary is arranged in the vicinity of the position of the minimum width of the body portion in the central axis direction.

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