JP5286769B2 - Water purifier - Google Patents

Water purifier Download PDF

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JP5286769B2
JP5286769B2 JP2007318007A JP2007318007A JP5286769B2 JP 5286769 B2 JP5286769 B2 JP 5286769B2 JP 2007318007 A JP2007318007 A JP 2007318007A JP 2007318007 A JP2007318007 A JP 2007318007A JP 5286769 B2 JP5286769 B2 JP 5286769B2
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container
rib
convex portion
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shaped convex
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JP2009137636A (en
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三喜子 安永
卓 磯部
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Toray Industries Inc
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Description

本発明はプラスチック容器を用いた浄水器に関する。 The present invention relates to a water purifier using a plastic container.

近年、飲料物や固形物を収容するための容器としてプラスチック容器が広く使用されている。プラスチック容器は、他のガラス容器や金属容器に比較して軽量であり成形性に優れるといった多くの利点を有するが、従来、薄肉化した容器は機械的強度が劣るという問題があった。とりわけプラスチック容器内に、内容物を収納した状態では容器重量が増加するため内容物を収容した状態で容器が落下すると、容器が破損する場合があった。このような問題に対し、特許文献1には、図4Aに示すような容器内側下方コーナーの曲率半径を調整し、強度を上げる技術が開示されている。また、特許文献2には、図4Bに示すような容器底部41の断面形状を調整し、落下強度を上げる技術が開示されている。
特開平10−264922号公報 特開2006−315726号公報
In recent years, plastic containers have been widely used as containers for containing beverages and solids. A plastic container has many advantages such as light weight and excellent moldability as compared with other glass containers and metal containers, but conventionally, a thin-walled container has a problem of poor mechanical strength. In particular, when the contents are stored in a plastic container, the weight of the container increases. Therefore, if the container falls while the contents are stored, the container may be damaged. For such a problem, Patent Document 1 discloses a technique for adjusting the radius of curvature of the container inner lower corner as shown in FIG. 4A to increase the strength. Patent Document 2 discloses a technique for increasing the drop strength by adjusting the cross-sectional shape of the container bottom 41 as shown in FIG. 4B.
JP-A-10-264922 JP 2006-315726 A

しかしながら、本発明者らの知見によると、容器内側下方コーナーの肉厚や形状を変更しコーナー部の耐衝撃性を向上させる、あるいは容器底面部の断面形状を調整することで、底面部と側面部で形成される下方コーナーの容器底面部外側に下方に向けて設けられたリブ状凸部の強度を向上させる等の技術は、リブ状凸部を含む容器の下部に割れが生じた場合、容器の底面部や側面部など収容部の割れを引き起こす場合があった。   However, according to the knowledge of the present inventors, by changing the thickness and shape of the container inner lower corner to improve the impact resistance of the corner portion, or by adjusting the cross-sectional shape of the container bottom portion, the bottom surface portion and the side surface The technology such as improving the strength of the rib-like convex portion provided downward toward the outside of the bottom surface portion of the container at the lower corner formed by the portion, when a crack occurs in the lower part of the container including the rib-like convex portion, There was a case where the housing part such as the bottom part or the side part of the container was cracked.

本発明者らの知見によると、これは、容器が落下した際、最初に接地するリブ状凸部先端に加わる負荷が直接容器底面部や側面部に伝わることに起因する。つまり容器底面部や側面部がリブ状凸部と同程度の強度もしくはリブ状凸部よりも小さい強度を有する場合、衝撃による負荷がプラスチック部分を介し容器底面部や側面部に到達するため、容器底面部や側面部の少なくともどちらか一方が非常に割れやすい状態となる。特に容器内側下方コーナーは応力が集中しやすく、リブ状凸部先端から伝わった落下による負荷による影響が大きく、割れやすい。例えば、図5Aは、図4Aに示した特許文献1に記載されている容器下部形状の場合の落下時の衝撃による負荷の伝播方向の例を示したものであるが、この場合は、リブ状凸部下方外側先端から伝わった衝撃による負荷は、図中の矢印のように、容器内側下方コーナーへも伝わる。また、図5Bは、図4Bに示した特許文献2に記載されている容器下部形状の場合の落下時の衝撃による負荷の伝播方向の例を示したものであるが、この場合も、リブ状凸部下方外側先端から伝わった衝撃による負荷は、図中の矢印のように、容器内側下方コーナー部へも伝わる。   According to the knowledge of the present inventors, this is due to the fact that when the container is dropped, the load applied to the tip of the rib-like convex portion that is first grounded is directly transmitted to the bottom surface portion and the side surface portion of the container. In other words, if the container bottom and side parts have the same strength as the rib-like convex part or less strength than the rib-like convex part, the load due to impact reaches the container bottom part and side part via the plastic part. At least one of the bottom surface portion and the side surface portion is very easily broken. In particular, stress tends to be concentrated at the inner lower corner of the container, and is greatly affected by a load caused by a drop transmitted from the tip of the rib-shaped convex portion, and is easily cracked. For example, FIG. 5A shows an example of the propagation direction of the load due to the impact at the time of dropping in the case of the container lower part shape described in Patent Document 1 shown in FIG. 4A. The load caused by the impact transmitted from the lower outer tip of the convex portion is also transmitted to the lower inner corner of the container as indicated by the arrow in the figure. FIG. 5B shows an example of the propagation direction of a load due to an impact at the time of dropping in the case of the container lower part shape described in Patent Document 2 shown in FIG. 4B. The load due to the impact transmitted from the lower outer tip of the convex portion is also transmitted to the lower inner corner portion of the container as indicated by the arrow in the figure.

本発明の目的は上記問題を解決する容器形状を提供することにある。   The objective of this invention is providing the container shape which solves the said problem.

前記課題を達成するため、本発明の浄水器は下記の構成からなる。 In order to achieve the above object, the water purifier of the present invention has the following configuration.

明によれば、側面部と、該側面部と接合されて容器下方コーナーを形成する底面部と、前記容器下方コーナーの少なくとも一部の下方の容器外側に下方に向けて設けられたリブ状凸部とを有するプラスチック容器であって、前記プラスチック容器の縦断面において、前記リブ状凸部下端外側の端点と容器下方コーナーとを結ぶ線分が前記底面部の下方外形線および前記リブ状凸部の内側面外形線とそれぞれ交わるよう構成され、かつ前記リブ状凸部よりも水平方向内側に前記底面部から下方に延びる少なくとも一つの設置補助凸部を備え、さらに前記リブ状凸部の厚みd1と前記設置補助凸部の厚みd5がd5>d1を満たすプラスチック容器を用いた浄水器が提供される。
また、本発明の好ましい形態によれば、前記底面部が多角形であり、前記多角形の角部の少なくとも一部に前記リブ状凸部が設けられている浄水器が提供される。
また、本発明の好ましい形態によれば、前記底面部の全周にわたり前記リブ状凸部が設けられている浄水器が提供される。
According to the onset bright, and side portions, and a bottom portion that is joined to the said side surface portion to form a container lower corners, arranged downward in the vessel outside of at least a portion of the lower of the container lower corner rib In the longitudinal section of the plastic container, a line segment connecting the end point outside the lower end of the rib-like convex part and the container lower corner is a lower outline of the bottom part and the rib-like shape. It includes at least one installation auxiliary convex portion that is configured to intersect with the inner side surface outline of the convex portion and extends downward from the bottom surface portion on the inner side in the horizontal direction than the rib-shaped convex portion. A water purifier using a plastic container in which the thickness d1 and the thickness d5 of the installation auxiliary convex portion satisfy d5> d1 is provided.
Moreover, according to the preferable form of this invention, the said bottom face part is a polygon, The water purifier by which the said rib-shaped convex part is provided in at least one part of the corner | angular part of the said polygon is provided.
Moreover, according to the preferable form of this invention, the water purifier by which the said rib-shaped convex part is provided over the perimeter of the said bottom face part is provided.

本発明において「リブ状凸部」は、例えば、図Aに示すような形状とすることができる。図Aは、プラスチック容器下方の縦断面図を示したものであるが、底面部と側面部で形成される容器下方コーナーの容器底面部外側に下方に向けてリブの形状をした凸部が設けられている。 "Rib-like protrusions" in the present invention include, for example, may be shaped as shown in FIG. 3 A. Figure 3 A is shows a longitudinal sectional view of the lower plastic containers, the convex portion to the shape of the rib downwardly in the container bottom portion outside the container lower corner formed by the bottom and side portions Is provided.

本発明において「リブ状凸部の厚み」とは、容器の縦断面においてリブ状凸部の水平方向の厚みをいう。   In the present invention, “the thickness of the rib-like convex portion” refers to the thickness of the rib-like convex portion in the horizontal direction in the longitudinal section of the container.

本発明において「側面部の厚み」とは、容器の縦断面において容器側面部の水平方向の厚みをいう。リブ状凸部の厚みがリブ状凸部によって異なる場合は、厚みの最も小さいリブ状凸部の厚みをいう。   In the present invention, the “thickness of the side surface portion” refers to the horizontal thickness of the side surface portion of the container in the longitudinal section of the container. When the thickness of the rib-shaped convex portion varies depending on the rib-shaped convex portion, it means the thickness of the rib-shaped convex portion having the smallest thickness.

本発明において「底面部の厚み」とは、容器の縦断面において底面部の縦方向の厚みをいう。   In the present invention, the “thickness of the bottom surface portion” refers to the thickness in the vertical direction of the bottom surface portion in the longitudinal section of the container.

本発明において「側面部と底面部を接合されて形成される容器下方コーナー」は、例えば、図Aで示されるような形状においては、コーナーXで示される場所である。 "Container lower corner which is formed by joining the side surface portion and a bottom portion" in the present invention include, for example, in the shape as shown in Figure 3 A, a place indicated by the corners X.

本発明によれば、落下等の衝撃に対する耐衝撃性に優れ収容部破損を防ぐことが可能なプラスチック容器を得ることができる。   ADVANTAGE OF THE INVENTION According to this invention, the plastic container which is excellent in impact resistance with respect to impacts, such as a fall, and can prevent a container part failure | damage can be obtained.

以下、本発明の最良の実施形態の例を浄水器におけるプラスチック容器に適用した場合を例にとって、図面を参照しながら説明する。本発明の実施形態の例を示す図面は、図1、図3A、図3B、図3C、図6、図7、図8A、図8C、図9であり、その他の図面は、本発明の実施形態を示すものではない。 Hereinafter, the example of the best embodiment of the present invention will be described with reference to the drawings, taking as an example the case of applying to a plastic container in a water purifier. Drawings showing examples of embodiments of the present invention are FIGS. 1, 3A, 3B, 3C, 6, 7, 7, 8A, 8C, and 9, and other drawings are embodiments of the present invention. It does not indicate a form.

なお本発明は以下に示す実施の形態に限定されるものではなく、上記本発明の目的を達成できるものであれば良い。   Note that the present invention is not limited to the embodiments described below, and may be anything that can achieve the object of the present invention.

図1は、本実施形態の浄水器の概略図を示したものである。図1に示すように、本実施形態の浄水器は、フタ1と水受け部2、カートリッジ3、容器4から構成される。カートリッジ3は水受け部2と容易に脱着可能であり、水受け部2に挿入した状態で使用する。また水受け部2は容器4と上部で嵌合しており、容器4の下方は液体などが収容される収容部5が空間として維持される状態である。フタ1は水受け部2と容器4の上方に位置する。なお、カートリッジ3には、活性炭などのろ材が収納されている。 FIG. 1 shows a schematic view of the water purifier of the present embodiment. As shown in FIG. 1, the water purifier of the present embodiment includes a lid 1, a water receiver 2, a cartridge 3, and a container 4. The cartridge 3 can be easily attached to and detached from the water receiving portion 2 and is used in a state of being inserted into the water receiving portion 2. Moreover, the water receiving part 2 is fitted to the container 4 at the upper part, and the lower part of the container 4 is in a state in which the accommodating part 5 in which liquid or the like is accommodated is maintained as a space. The lid 1 is located above the water receiver 2 and the container 4. The cartridge 3 contains a filter medium such as activated carbon.

図1の状態において、水受け部2に水道水を入れると、水道水が自重でカートリッジ3を通過し、その際遊離残留塩素などが取り除かれ、浄水として容器4の下方に位置する収容部5に溜まる。   In the state of FIG. 1, when tap water is put into the water receiving portion 2, the tap water passes through the cartridge 3 with its own weight, and at that time, free residual chlorine and the like are removed, and the accommodating portion 5 located below the container 4 as purified water. Accumulate.

また、容器4はリブ状凸部を持つ容器であり、ポリプロピレンやアクリロニトリルスチレン、ポリスチレン、ポリカーボネート、アクリル、ポリエチレン、アクリロニトリルブタジエンスチレン、ハイインパクトポリスチレンなどの樹脂成形品であることが好ましい。特にアクリロニトリルスチレンやハイインパクトポリスチレンは耐衝撃性、透明度、耐熱性に優れるため浄水器のプラスチック容器として好ましい。   The container 4 is a container having a rib-like convex portion, and is preferably a resin molded product such as polypropylene, acrylonitrile styrene, polystyrene, polycarbonate, acrylic, polyethylene, acrylonitrile butadiene styrene, or high impact polystyrene. In particular, acrylonitrile styrene and high impact polystyrene are preferable as plastic containers for water purifiers because of their excellent impact resistance, transparency, and heat resistance.

次に、容器下部形状の最良の形態について説明する。   Next, the best form of the container lower shape will be described.

図2Aは、従来技術の一実施形態を示すプラスチック容器下方の縦断面における断面図である。また、図2Bは、従来技術の一実施形態を示すプラスチック容器の底面図である。また、図2Cは、従来技術の他の実施形態を示すプラスチック容器の底面図である。図3Aは、本発明の一実施形態を示すプラスチック容器下方の縦断面における断面図である。また、図3Bは、本発明の一実施形態を示すプラスチック容器の底面図である。また、図3Cは、本発明の他の実施形態を示すプラスチック容器の底面図である。 FIG. 2A is a cross-sectional view in a vertical cross section below a plastic container showing an embodiment of the prior art . FIG. 2B is a bottom view of the plastic container showing an embodiment of the prior art . FIG. 2C is a bottom view of a plastic container showing another embodiment of the prior art . FIG. 3A is a cross-sectional view in a longitudinal section below a plastic container showing an embodiment of the present invention. FIG. 3B is a bottom view of a plastic container showing an embodiment of the present invention. FIG. 3C is a bottom view of a plastic container showing another embodiment of the present invention.

本実施形態の形状では、図6(説明用に、設置補助凸部を省略し図示していない)に示すように、リブ状凸部下方外側の端点Yとプラスチック容器の下方内側コーナーXとを結ぶ線分X−Yが、底面部の下方外形線αおよびリブ状凸部内側面の外形線βとそれぞれ交わる。落下したときにリブ状凸部下方外側の端部Yに加わる負荷はプラスチック部分を介し伝わるが、この形状では線分X−Yがプラスチック内部のみを通ることはない。つまり、落下したときにリブ状凸部下方外側の端点Yに加わる負荷が収容部コーナー、すなわち、容器の下方内側コーナーXに直接伝わらない構造となり、容器の破損を防止することができる。 In the shape of the present embodiment, as shown in FIG. 6 (for the sake of explanation, the installation auxiliary convex portion is omitted and not shown) , the end point Y on the lower outer side of the rib-shaped convex portion and the lower inner corner X of the plastic container are The connecting line segment XY intersects the lower outline α of the bottom surface portion and the outline β of the inner surface of the rib-like convex portion. The load applied to the end Y on the lower outer side of the rib-like convex portion is transmitted through the plastic portion when dropped, but in this shape, the line segment XY does not pass only inside the plastic. That is, the load applied to the end Y on the lower outer side of the rib-like convex portion when dropped is not directly transmitted to the accommodating portion corner, that is, the lower inner corner X of the container, and the container can be prevented from being damaged.

d3 > d1+d2
また、図7(説明用に、設置補助凸部を省略し図示していない)において、リブ状凸部下方外側の端点Yから落下した衝撃負荷が容器の下方内側コーナーXに直接加わらないためには、容器の下方内側コーナーXから縦方向下向きの線γを基準とし、リブ状凸部内側と底面部外側の交点Zと容器の下方内側コーナーXを結ぶ線分X−Zとが成す角度θが、同基準線γと線分X−Yが成す角度θ’より大きいことが好ましい。つまり次式を満たす形状が良い。
d3> d1 + d2
Further, in FIG. 7 (for the sake of explanation, the installation auxiliary convex portion is omitted and not shown) , the impact load dropped from the end point Y on the lower outer side of the rib-shaped convex portion is not directly applied to the lower inner corner X of the container. Is an angle θ formed by a line segment X-Z connecting the intersection Z between the rib-shaped convex portion inner side and the bottom surface portion outer side and the lower inner corner X of the container, with reference to a line γ downward in the vertical direction from the lower inner corner X of the container. Is preferably larger than the angle θ ′ formed by the reference line γ and the line segment XY. That is, a shape satisfying the following formula is good.

tanθ > tanθ’ tan θ> tan θ '

、リブ状凸部に面取りやコーナーアール加工が施されている場合は、リブ状凸部の下端の厚みをリブ状凸部の厚みとする。リブ状凸部の厚みがリブによって異なる場合は、最も薄いリブ状凸部の厚みを考えることが好ましい。 Also, if the chamfering or corner radius processed into Li Bed convex portion is subjected to a thickness of the lower end of the rib-like protrusions and the thickness of the rib-like protrusions. When the thickness of the rib-like convex portion varies depending on the rib, it is preferable to consider the thickness of the thinnest rib-like convex portion.

側面部外側下端にアールや面取り形状がある場合、側面アールや面取り形状の上端を側面部外側下端と考えることが好ましい。 If there is a rounded or chamfered shape on the side surface outside the lower end, it is preferable to consider the upper end of the side surface rounded or chamfered shape with the side portion outer bottom.

た、内側コーナーにアールがある場合はアールの中心点Oとリブ状凸部下方外側の端部Yを結ぶ線分とアールの交点を容器内側コーナーXと考えるのが良い。内側コーナーが面取り形状である場合は容器側面内側と面取りの交点を容器内側コーナーと考えるのが良い。 Also, it is to consider a point of intersection of the line segment and Earl connecting the center point O and the rib-shaped convex portion below the outer end Y of the radius and the container inner corner X if there is a rounded inside corner. When the inner corner has a chamfered shape, the intersection of the inner side surface of the container and the chamfer should be considered as the container inner corner.

また本発明において「設置補助凸部」とは、例えば図3Aに示すような形状とすることができる。図3Aは、プラスチック容器下方の縦断面図を示したものであるが、リブ状凸部よりも水平方向内側に前記底面部から下方に延びる少なくとも一つの設置補助凸部が設けられており、容器を置いたときの接地面を形成することを目的とする。   In the present invention, the “installation auxiliary convex portion” may have a shape as shown in FIG. 3A, for example. FIG. 3A shows a vertical cross-sectional view below the plastic container, wherein at least one installation auxiliary convex portion extending downward from the bottom surface portion is provided on the inner side in the horizontal direction than the rib-shaped convex portion. The purpose is to form the ground contact surface when the is placed.

本発明の一実施形態を示す図Aと従来形態を示す図Bを用いて破壊メカニズムの違いを説明する。 Explaining a difference in fracture mechanism with reference to FIG. 8 B showing the FIG. 8 A and the conventional embodiment showing an embodiment of the present invention.

Aと図Bは容器側面部の厚みd3と底面部の厚みa1は同じであり、リブ状凸部の形状とリブ状凸部内側リブの有無を相違点とする。図Aと図Bが傾いて落下した場合の着地状況を図Cと図Dに示す。落下の衝撃による負荷は、落下の瞬間、矢印のようにリブ状凸部の接地点つまりリブ状凸部下方外側の端部Yから鉛直上向きにプラスチック容器に伝わる。負荷はプラスチック容器を介し伝わるため、図Dに示すように、点Xは落下の衝撃による負荷の影響を受けやすい状態となり容器下方コーナーXをはじめ容器側面部や容器側面部が割れ易くなる。一方、本発明の実施形態を示す図Cは、落下接地点Yと内側コーナーXがプラスチックで直接繋がっていないため、落下の衝撃による負荷が容器の内側コーナーXに直接影響を与えることはない。 Figure 8 A and Figure 8 B is the thickness a1 of the thickness d3 and the bottom portion of the container side portion is the same, the presence or absence of shape and the rib-like protrusions inner rib of the rib-like protrusions and differences. The landing situation where Figure 8 A and Figure 8 B has fallen inclined shown in FIG. 8 C and Figure 8 D. The load due to the impact of the drop is transmitted to the plastic container vertically upward from the grounding point of the rib-like convex portion, that is, the end Y on the lower side of the rib-like convex portion as indicated by an arrow at the moment of dropping. Since the load transmitted through the plastic container, as shown in FIG. 8 D, the point X is easily susceptible state becomes the container lower corner X Introduction vessel side portion and the container side portion is cracked the influence of load due to the impact of the fall. On the other hand, FIG. 8 C illustrates an embodiment of the present invention, since the falling ground point Y and the inner corner X is not connected directly with plastic, the load due to the impact of the drop will not directly affect the internal corners X of the container .

次に、リブ状凸部が底面部においてどのように構成されているかを説明する。   Next, how the rib-like convex part is configured in the bottom part will be described.

Bは、本発明の一実施形態を示すプラスチック容器の底面図である。図Bの容器底面図にはリブ状凸部が多角形の角部にある。容器底面部が多角形の場合、容器を落とすと、多角形の角部から接地する可能性が高い。したがってリブ状凸部が多角形の角部にあると、より高いリブ状凸部による容器破損の防止効果を得ることができる。このリブ状凸部は、すべての角部にある必要はなく、少なくとも一部の角部にあればよい。他の実施形態についても同様である。 Figure 3 B is a bottom view of the plastic container showing an embodiment of the present invention. The container bottom view of FIG. 3 B rib-like protrusions are in the corners of the polygon. In the case where the container bottom is a polygon, if the container is dropped, there is a high possibility of grounding from the corner of the polygon. Therefore, when the rib-like convex portions are at the corners of the polygon, it is possible to obtain an effect of preventing the container from being damaged by the higher rib-like convex portions. This rib-shaped convex part does not need to exist in all the corner | angular parts, and should just exist in at least one part of corner | angular part. The same applies to other embodiments.

Cは、本発明の他の実施形態を示すプラスチック容器の底面図である。図Cに示すように、リブ状凸部が底面部全周に渡って存在する場合には、容器が多角形底面部の角でなく辺から接地した場合もリブ状凸部による容器破損の防止効果を得ることができ、好ましい。 Figure 3 C is a bottom view of the plastic container showing another embodiment of the present invention. As shown in FIG. 3 C, the rib-like projections when present all around the bottom portion, the container is a container breakage by rib-like protrusions may have a ground from the side rather than the corners of the polygonal bottom section A prevention effect can be obtained, which is preferable.

図3Aは、本発明の一実施形態を示すプラスチック容器下方の縦断面における断面図である。図3Aに示すように、リブ状凸部より水平方向内側に容器底面部から下方に伸びる設置補助凸部がある場合には、容器を落とし、リブ状凸部の割れや欠けが生じた場合、図2Aの形状では、容器を置くと容器が傾き不安定な状態となるが、リブ状凸部と別に設置補助凸部があれば、リブ状凸部が割れて短くなった場合も、容器落下前の安定した状態を維持することができる。また設置補助凸部が図3Aのようにリブ状凸部より内側にある場合、設置補助凸部が割れて短くなる可能性は非常に低くなり、容器を繰り返し落としてしまった場合も容器を安定した状態で置くことが継続できる。設置補助凸部はリブ状凸部の破損前後において、容器を設置したとき容器の傾きを防ぐものであるため、リブ状凸部と同じ長さであることが好ましく、つまり容器設置時はリブ状凸部と設置補助凸部はともに接地していることが望ましい。   FIG. 3A is a cross-sectional view in a longitudinal section below a plastic container showing an embodiment of the present invention. As shown in FIG.3A, when there is an installation auxiliary convex portion extending downward from the bottom surface portion of the container on the inner side in the horizontal direction from the rib-shaped convex portion, when the container is dropped and cracking or chipping of the rib-shaped convex portion occurs, In the shape of FIG. 2A, when the container is placed, the container is inclined and unstable. However, if there is an installation auxiliary convex part in addition to the rib-shaped convex part, the container drops even when the rib-shaped convex part is broken and shortened. The previous stable state can be maintained. In addition, when the installation auxiliary convex part is inside the rib-shaped convex part as shown in FIG. 3A, the possibility that the installation auxiliary convex part is cracked and shortened becomes very low, and the container is stable even if the container is dropped repeatedly. You can continue to put in the state. Since the installation auxiliary convex part prevents the inclination of the container when the container is installed before and after breakage of the rib-shaped convex part, it is preferably the same length as the rib-shaped convex part. It is desirable that both the convex portion and the installation auxiliary convex portion are grounded.

た、リブ状凸部の内側に設置補助凸部が図3B、図3Cのようにあると、容器を安定した状態で置ける状態がさらに長く継続でき、リブの効果をより長く得ることが可能となる。 Also, when installing the auxiliary protrusions on the inside of the rib-shaped convex portion is as shown in FIG. 3B, FIG. 3C, containers can be continued stably put in a state state longer, can be obtained a longer effect of the ribs It becomes.

はリブ状凸部の厚みd1とリブ状凸部より内側の設置補助凸部の厚みd5が次式の関係にある。 In FIG. 9, the thickness d1 of the rib-like convex portion and the thickness d5 of the installation auxiliary convex portion inside the rib-like convex portion have the following relationship.

d5 > d1
上記のように構成すると、リブ状凸部の強度より設置補助凸部の強度の方が高くなる。したがって、リブ状凸部の破損によって落下負荷による容器破損を防止する効果と、リブ状凸部内側の設置補助凸部によりリブ状凸部破損後も容器を安定した状態で置ける効果を、より確実に同時に得ることが可能となる。
d5> d1
If comprised as mentioned above, the intensity | strength of an installation auxiliary | assistant convex part will become higher than the intensity | strength of a rib-shaped convex part. Therefore, the effect of preventing the container damage due to the drop load due to the damage of the rib-shaped convex part and the effect of placing the container in a stable state even after the rib-shaped convex part is damaged by the installation auxiliary convex part inside the rib-shaped convex part are more reliable. Can be obtained simultaneously.

図1は本実施形態を適用したプラスチック容器を浄水器として用いている。浄水器は部材点数も多く、液体を収容することのみを目的とするプラスチック容器よりも高価であるため長く使用できることが望ましく、収容部が破損しないことや設置の安定性が長期求められるため、本実施形態を適用したプラスチック容器を用いることが好ましい。   FIG. 1 uses a plastic container to which this embodiment is applied as a water purifier. The water purifier has a large number of parts and is more expensive than a plastic container intended only to contain liquid, so it is desirable that it can be used for a long time. It is preferable to use a plastic container to which the embodiment is applied.

以下、実施例により本実施形態をさらに詳細に説明するが、これら実施例により本発明の範囲が制限されるものではない。
[実施例1]
プラスチック容器を構成する樹脂として、アクリロニトリルスチレン(AS)樹脂(旭化成ケミカルズ製)を用いた。この樹脂を射出成形により図に示す本実施形態を適用した形状のプラスチック容器を作成した。得られた容器の寸法を表1に示す。
Hereinafter, the present embodiment will be described in more detail by way of examples, but the scope of the present invention is not limited by these examples.
[Example 1]
As a resin constituting the plastic container, acrylonitrile styrene (AS) resin (manufactured by Asahi Kasei Chemicals) was used. A plastic container having a shape to which this embodiment shown in FIG. 9 was applied was produced by injection molding of this resin. The dimensions of the obtained container are shown in Table 1.

射出成形で得られたプラスチック容器の低温環境で破損し易い特性を用い、得られた容器を−10℃以下の周囲温度中に空の状態で5時間以上放置し、容器のみを空の状態でただちに1mの高さからコンクリート上に落下させる強制試験により、プラスチック強度を評価した。落下させたあと、容器が常温にもどったのち、容器に水を入れ、収容部側面や底面等から水が漏れていないかを確認した。このような操作を、最大20回まで繰り返し、水の漏れが何回目の落下で発生したかを確認した。なお、落下させるときの容器の初期姿勢は、容器の底面がコンクリート面に水平になる位置とした。結果を表2に示す。サンプル数(以下、Nと呼ぶ)を3ヶとして全て最大落下数の20回落としても水漏れは起こらなかった。
[比較例1]
リブ状凸部の厚みと長さ以外は実施例1と同様にして、図10に示す従来形状のプラスチック容器を作成した。つまり、リブ状凸部に加わる落下負荷が直接底面部に加わる可能性が高い。得られた容器の寸法を表1に示す。
Using the characteristics of plastic containers that are easily damaged in low temperature environments obtained by injection molding, leave the resulting container in an ambient temperature of -10 ° C or lower for 5 hours or more in an empty state, leaving only the container empty. The strength of the plastic was evaluated by a forced test that immediately dropped onto the concrete from a height of 1 m. After dropping, the container returned to room temperature, and then water was poured into the container, and it was confirmed whether water had leaked from the side or bottom of the housing. Such an operation was repeated up to 20 times, and it was confirmed how many times the water leak occurred. Note that the initial posture of the container when dropped was the position where the bottom surface of the container was horizontal to the concrete surface. The results are shown in Table 2. Even if the number of samples (hereinafter referred to as N) was three and all dropped 20 times of the maximum number of drops, no water leakage occurred.
[Comparative Example 1]
A conventional plastic container shown in FIG. 10 was produced in the same manner as in Example 1 except for the thickness and length of the rib-shaped convex portion. In other words, there is a high possibility that the drop load applied to re blanking convex portion is applied directly to the bottom part. The dimensions of the obtained container are shown in Table 1.

得られた容器を用い、実施例1と同様の試験を行った。結果を表2に示す。N=3において、全数10回以下の落下で水漏れが確認された。
[比較例2]
リブ状凸部とリブを有し、線分X−Yがプラスチック部分のみを通過する、図11に示す従来形状のプラスチック容器について実施例1と同様の評価を行った。樹脂は実施例1と同じAS樹脂を用いた。寸法は表1に示す。結果を表2に示す。N=3において、1つはリブ状凸部の効果と推測される落下回数20回以上となったが、2つは比較例1同様、10回以下の落下で水漏れが確認された。
[比較例3]
実施例1と同じ樹脂を用い、図12に示すリブ状凸部のない容器について、実施例1と同様の評価を行った。樹脂は実施例1と同じAS樹脂を用いた。寸法は表1に示す。結果を表2に示す。N=3において、全数5回以下の落下で水漏れが確認された。
The same test as in Example 1 was performed using the obtained container. The results are shown in Table 2. At N = 3, water leakage was confirmed by a total of 10 or fewer drops.
[Comparative Example 2]
Has a rib-shaped convex portion and the rib, the line segments X-Y passes through only plastic part, was evaluated in the same manner as in Example 1 for plastic containers of the prior shape shown in FIG. 11. The same AS resin as in Example 1 was used as the resin. The dimensions are shown in Table 1. The results are shown in Table 2. At N = 3, one was estimated to be the effect of the rib-shaped convex portion and the number of drops was 20 times or more, but two were confirmed to have water leakage after 10 times or less as in Comparative Example 1.
[Comparative Example 3]
Using the same resin as in Example 1, the containers without the rib-shaped convex portion shown in FIG. 12 were evaluated in the same manner as in Example 1. The same AS resin as in Example 1 was used as the resin. The dimensions are shown in Table 1. The results are shown in Table 2. At N = 3, water leakage was confirmed after a total of 5 or fewer drops.

Figure 0005286769
Figure 0005286769

Figure 0005286769
Figure 0005286769

本発明は、浄水器に限らず、お茶や水を入れるポットや食品用密閉容器、小物入れなどにも応用することができるが、その応用範囲が、これらに限られるものではない。   The present invention can be applied not only to water purifiers, but also to pots for tea and water, sealed containers for foods, and small items, but the application range is not limited to these.

本実施形態のプラスチック容器の概略図を示したものである。The schematic of the plastic container of this embodiment is shown. 従来技術の一実施形態を示すプラスチック容器縦断面における概略断面図である。It is a schematic sectional drawing in the plastic container longitudinal cross-section which shows one Embodiment of a prior art . 従来技術の一実施形態を示すプラスチック容器の底面図である。It is a bottom view of the plastic container which shows one Embodiment of a prior art . 従来技術の一実施形態を示すプラスチック容器の底面図である。It is a bottom view of the plastic container which shows one Embodiment of a prior art . 本発明の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of this invention. 本発明の一実施形態を示すプラスチック容器の底面図である。It is a bottom view of the plastic container which shows one Embodiment of this invention. 本発明の一実施形態を示すプラスチック容器の底面図である。It is a bottom view of the plastic container which shows one Embodiment of this invention. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art. 図4Aにおける破壊モードの形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal cross-section below the plastic container which shows the form of the destruction mode in FIG. 4A. 図4Bにおける破壊モードの形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below a plastic container which shows the form of the destruction mode in Drawing 4B. 本発明の一実施形態を示すプラスチック容器下方の設置補助凸部を図示していな い、縦断面における説明用概略断面図である You have not shown an installation aid protrusions of the plastic container lower illustrating one embodiment of the present invention is an explanatory schematic cross-sectional view in longitudinal section. 本発明の一実施形態を示すプラスチック容器下方の設置補助凸部を図示していな い、縦断面における説明用概略断面図である You have not shown an installation aid protrusions of the plastic container lower illustrating one embodiment of the present invention is an explanatory schematic cross-sectional view in longitudinal section. 本発明の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of this invention. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art. Aにおける破壊モードの形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic cross-sectional view in longitudinal section of the plastic container downward showing the form of a failure mode in FIG 8 A. 8Bにおける破壊モードの形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below a plastic container which shows the form of the destruction mode in Drawing 8B . 本発明の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of this invention. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art. 従来技術の一実施形態を示すプラスチック容器下方の縦断面における概略断面図である。It is a schematic sectional drawing in the longitudinal section below the plastic container which shows one Embodiment of a prior art.

符号の説明Explanation of symbols

1 : フタ
2 : 水受け部
3 : カートリッジ
4 : 容器
5 : 収容部
41 : 従来技術品の容器底面部
42 : 従来技術品の容器側面部
43 : 従来技術品のリブ状凸部
51 : 従来技術品の容器底面部
52 : 従来技術品の容器側面部
53 : 従来技術品のリブ状凸部
d1 : リブ状凸部の厚み
d2 : 側面とリブ側面の距離
d3 : 側面部の厚み
d4 : 側面部内側下端から容器内側下方コーナーまでの水平方向の長さ
d5 : 設置補助凸部の厚み
L1 : 接地面から側面部下方端点までの長さ
L2 : 接地面から底面部外側までの長さ
a1 : 底面部の厚み
X : 容器内側の下方コーナー
Y : リブ状凸部外側下方の端部
Z : リブ状凸部内側と底面部外側の交点
O : 容器内側の下方コーナーアールの中心点
α : 容器下方断面図において底面部外側を示す線
β : 容器下方断面図においてリブ状凸部内側側面を示す線
γ : 容器下方断面図において点Xから縦に下ろした線
θ : 線γと線分X−Zが成す鋭角の角度
θ’ : 線γと線分X−Yが成す鋭角の角度
1: Lid 2: Water receiving part 3: Cartridge 4: Container 5: Storage part 41: Container bottom part 42 of conventional technology product: Container side surface part 43 of conventional technology product: Rib-shaped convex part 51 of conventional technology product: Conventional technology Container bottom part 52 of product: Side wall part 53 of conventional product: Rib-shaped convex part d1 of conventional product: Thickness of rib-shaped convex part d2: Distance between side surface and rib side surface d3: Thickness of side part
d4: horizontal length from the inner side lower end of the side surface part to the container inner lower corner
d5: Thickness L1 of the auxiliary installation convex portion L1: Length from the ground contact surface to the lower end of the side surface portion L2: Length from the ground contact surface to the outside of the bottom surface portion a1: Thickness of the bottom surface portion X: Lower corner Y inside the container: Rib shape End Z below the convex outer side: Crossing point O between the rib-shaped convex inner side and the bottom side outer side O: Center point α of the lower corner radius inside the container β: Line β indicating the outer side of the bottom part in the container lower sectional view: Container lower sectional view A line γ indicating the inner side surface of the rib-like convex portion in FIG. 6: A line θ vertically dropped from the point X in the container lower cross-sectional view θ: an acute angle formed by the line γ and the line segment XZ θ ′: a line γ and the line segment X− The acute angle formed by Y

Claims (3)

側面部と、該側面部と接合されて容器下方コーナーを形成する底面部と、前記容器下方コーナーの少なくとも一部の下方の容器外側に下方に向けて設けられたリブ状凸部とを有するプラスチック容器であって、前記プラスチック容器の縦断面において、前記リブ状凸部下端外側の端点と容器下方コーナーとを結ぶ線分が前記底面部の下方外形線および前記リブ状凸部の内側面外形線とそれぞれ交わるよう構成され、かつ前記リブ状凸部よりも水平方向内側に前記底面部から下方に延びる少なくとも一つの設置補助凸部を備え、さらに前記リブ状凸部の厚みd1と前記設置補助凸部の厚みd5がd5>d1を満たすプラスチック容器を用いたことを特徴とする浄水器。 A plastic having a side surface, a bottom surface joined to the side surface to form a container lower corner, and a rib-like convex portion provided downward toward the outside of the container below at least a part of the container lower corner. In the longitudinal section of the plastic container, a line segment connecting an end point outside the lower end of the rib-like convex portion and a container lower corner is a lower outline of the bottom portion and an inner side outline of the rib-like convex portion And at least one installation auxiliary convex portion extending downward from the bottom surface portion on the inner side in the horizontal direction than the rib-shaped convex portion, and further , the thickness d1 of the rib-shaped convex portion and the installation auxiliary convex portion water purification unit characterized in that the thickness of the part d5 is a plastic container which satisfies the d5> d1. 前記底面部が多角形であり、前記多角形の角部の少なくとも一部に前記リブ状凸部が設けられていることを特徴とする請求項1に記載の浄水器。 The water purifier according to claim 1, wherein the bottom surface portion is a polygon, and the rib-shaped convex portion is provided on at least a part of a corner portion of the polygon. 前記底面部の全周にわたり前記リブ状凸部が設けられていることを特徴とする請求項1に記載の浄水器。 The water purifier according to claim 1, wherein the rib-shaped convex portion is provided over the entire circumference of the bottom surface portion.
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