JP7075634B2

JP7075634B2 - Lid

Info

Publication number: JP7075634B2
Application number: JP2017241945A
Authority: JP
Inventors: 英嗣中井
Original assignee: Sanko Co Ltd
Current assignee: Sanko Co Ltd
Priority date: 2017-12-18
Filing date: 2017-12-18
Publication date: 2022-05-26
Anticipated expiration: 2037-12-18
Also published as: JP2019108147A

Description

本発明は、コンテナの上端フランジにロック部材を係合させて、コンテナの上面開口を閉塞した状態にロックされる蓋体に関する。 The present invention relates to a lid that engages a locking member with the upper end flange of the container to lock the top opening of the container in a closed state.

従来、この種の蓋体として、ロック部材が蓋体にスライド係合していて、ロック部材に備えたロック突片がコンテナの上端フランジの下面に係合するものが知られている。そのロック部材のスライド操作をスムーズに行うために、ロック突片には、先端縁を斜め下方に折り曲げてなる先端ガイド部が備えられている（例えば、特許文献１参照）。 Conventionally, as this type of lid, a lock member is slidably engaged with the lid, and a lock protrusion provided on the lock member engages with the lower surface of the upper end flange of the container. In order to smoothly slide the lock member, the lock protrusion is provided with a tip guide portion whose tip edge is bent diagonally downward (see, for example, Patent Document 1).

実開昭６１－９１５４７号公報（第３図、第５図）Jikkai Sho 61-91547 (Figs. 3 and 5)

しかしながら、上記した従来の蓋体の構造では、先端ガイド部を設けたことで、ロック突片と上端フランジとの係合が浅くなってロックの強度が低くなる虞が生じ得た。 However, in the above-mentioned conventional lid structure, the provision of the tip guide portion may cause the engagement between the lock protrusion and the upper end flange to become shallow, and the lock strength may be lowered.

本発明は、上記事情に鑑みてなされたもので、コンテナへのロックの強度を従来より高くすることが可能な蓋体の提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lid capable of increasing the strength of locking to a container as compared with the conventional case.

上記目的を達成するためになされた請求項１の発明は、コンテナの上端フランジの上面に重なり、前記コンテナの上面開口を閉塞する蓋本体部と、前記蓋本体部の外縁部に支持されて、第１回動位置と第２回動位置との間を水平に回動するロック部材と、前記ロック部材に設けられ、前記第１回動位置で前記上端フランジの側面に重なる側部壁と、前記側部壁から片持ち梁状に張り出し、前記第１回動位置で前記上端フランジの下面に重なり、前記第２回動位置で前記上端フランジの側方に位置するロック突片と、を有し、前記ロック突片を真上から見た輪郭形状には、前記側部壁から最も離れた位置で前記側部壁の内面と平行に延びる先端辺と、前記先端辺より前記ロック部材の回動中心側で、前記先端辺から前記側部壁側に鈍角に折り曲がって前記先端辺に対して傾斜する方向に延びる傾斜辺と、が含まれ、前記ロック突片のうち前記傾斜辺に沿った外縁部を斜め下方に曲げてなる傾斜ガイド部を備える蓋体である。 The invention of claim 1 made to achieve the above object is supported by a lid main body portion that overlaps the upper surface of the upper end flange of the container and closes the upper surface opening of the container, and an outer edge portion of the lid main body portion. A lock member that rotates horizontally between the first rotation position and the second rotation position, and a side wall provided on the lock member and overlapping the side surface of the upper end flange at the first rotation position. It has a lock projecting piece that projects like a cantilever from the side wall, overlaps the lower surface of the upper end flange at the first rotation position, and is located laterally of the upper end flange at the second rotation position. However, the contour shape of the lock projecting piece as viewed from directly above includes the tip side extending parallel to the inner surface of the side wall at the position farthest from the side wall, and the rotation of the lock member from the tip side. On the moving center side, an inclined side that bends at an blunt angle from the tip side to the side wall side and extends in a direction inclined with respect to the tip side is included, and is along the inclined side of the lock projecting pieces. It is a lid body provided with an inclined guide portion formed by bending the outer edge portion diagonally downward .

請求項２の発明は、前記側部壁から片持ち梁状に張り出し、前記ロック突片に上方から対向し、前記ロック突片との間に前記上端フランジ及び前記蓋本体部を受容可能な上部係合片と、前記上部係合片の一部を片持ち梁状に切り離してなり、前記ロック部材の回動中心回りの円弧に沿って延びる弾性係合片と、前記弾性係合片の側面に突出形成又は陥没形成された係合部と、前記蓋本体部に設けられ、前記ロック部材が前記第１回動位置に位置したときに前記係合部と係合する第１被係合部と、前記蓋本体部に設けられ、前記ロック部材が前記第２回動位置に位置したときに前記係合部と係合する第２被係合部と、を備える請求項１に記載の蓋体である。 The invention of claim 2 is an upper portion that projects from the side wall in a cantilever shape, faces the lock protrusion from above, and can receive the upper end flange and the lid main body portion between the lock protrusion and the lock protrusion. An elastic engagement piece formed by separating the engagement piece and a part of the upper engagement piece into a cantilever shape and extending along an arc around the center of rotation of the lock member, and a side surface of the elastic engagement piece. An engaging portion formed in a protrusion or a recess, and a first engaged portion provided on the lid main body portion and engaged with the engaging portion when the lock member is positioned at the first rotation position. The lid according to claim 1 , further comprising a second engaged portion provided on the lid main body portion and engaged with the engaging portion when the lock member is located at the second rotation position. The body.

請求項３の発明は、前記側部壁から片持ち梁状に張り出し、前記ロック突片に上方から対向し、前記ロック突片との間に前記上端フランジ及び前記蓋本体部を受容可能な上部係合片と、前記上部係合片の一部を片持ち梁状に切り離してなり、前記ロック部材の回動中心回りの円弧に沿って延びかつ前記側部壁に近い側が先端部になっている弾性係合片と、前記弾性係合片の側面に突出形成又は陥没形成された係合部と、前記蓋本体部に設けられ、前記ロック部材が前記第１回動位置に位置したときに前記係合部と係合する第１被係合部と、前記蓋本体部の一部として設けられて上下方向で対向して、間に前記上部係合片を受容する上支持壁及び下支持壁と、前記上部係合片に形成されて、前記弾性係合片の先方に位置し、前記上支持壁と前記下支持壁との間に進退する先端対向壁と、前記先端対向壁に形成されて、前記弾性係合片に近づくに従って下方に向かうように傾斜した進入ガイド部と、を有する請求項１又は２に記載の蓋体である。 The third aspect of the present invention is an upper portion that projects from the side wall in a cantilever shape, faces the lock protrusion from above, and can receive the upper end flange and the lid main body portion between the lock protrusion and the lock protrusion. The engaging piece and a part of the upper engaging piece are separated in a cantilever shape, extending along an arc around the center of rotation of the lock member, and the side close to the side wall becomes the tip portion. When the elastic engaging piece, the engaging portion formed on the side surface of the elastic engaging piece by protrusion or depression, and the lock member provided on the lid main body portion at the first rotation position. An upper support wall and a lower support that are provided as a part of the lid main body portion and face each other in the vertical direction and receive the upper engagement piece between the first engaged portion that engages with the engagement portion. Formed on the wall, a tip facing wall formed on the upper engaging piece, located at the tip of the elastic engaging piece, and advancing and retreating between the upper support wall and the lower support wall, and the tip facing wall. The lid according to claim 1 or 2 , further comprising an entry guide portion that is inclined downward as it approaches the elastic engagement piece.

請求項４の発明は、前記蓋本体部の外縁部から垂下し、前記上端フランジの外側に嵌合すると共に、前記ロック突片が貫通する貫通孔を有する嵌合部が備えられ、前記ロック部材が前記第２回動位置に位置したときに、前記傾斜ガイド部の先端が、前記嵌合部の内側面から延長された面上か又はそれより外側に位置する請求項１乃至３の何れか１の請求項に記載の蓋体である。 The invention of claim 4 is provided with a fitting portion that hangs down from the outer edge portion of the lid main body portion, fits on the outside of the upper end flange, and has a through hole through which the lock protrusion penetrates, and the lock member. Is located in the second rotation position, any one of claims 1 to 3 in which the tip of the inclined guide portion is located on or outside the surface extending from the inner surface of the fitting portion. The lid according to claim 1.

請求項１の蓋体では、ロック部材が第２回動位置から第１回動位置へと回動し、ロック突片が、傾斜ガイド部をガイドにしてコンテナの上端フランジの下面に重なり、蓋体をコンテナにロックする。ここで、ロック突片を真上から見た輪郭形状には、側部壁から最も離れた位置で側部壁の内面と平行に延びる先端辺と、先端辺よりロック部材の回動中心側で、先端辺から側部壁側に鈍角に折り曲がって先端辺に対して傾斜する方向に延びる傾斜辺と、が含まれ、傾斜ガイド部は、ロック突片の傾斜辺に沿った外縁部を斜め下方に曲げてなるので、ロック部材を第１回動位置まで回動させたときに、ロック突片の先端部のうち回動の中心側の先端角部以外の部分を上端フランジに深く係合させることができる。これにより、ロック突片と上端フランジとの係合が従来より深くなり、コンテナに対する蓋のロックの強度を従来より高くすることができる。 In the lid body of claim 1, the lock member rotates from the second rotation position to the first rotation position, and the lock projection piece overlaps the lower surface of the upper end flange of the container with the inclined guide portion as a guide, and the lid. Lock your body to the container. Here, the contour shape of the lock projecting piece as viewed from directly above includes the tip side extending parallel to the inner surface of the side wall at the position farthest from the side wall and the rotation center side of the lock member from the tip side. Includes an inclined side that bends obtusely from the tip side to the side wall side and extends in a direction that inclines with respect to the tip side, and the inclined guide portion obliques the outer edge along the inclined side of the lock protrusion. Since it is bent downward, when the lock member is rotated to the first rotation position, the portion of the tip of the lock protrusion other than the tip corner on the center side of rotation is deeply engaged with the upper end flange. Can be made to. As a result, the engagement between the lock protrusion and the upper end flange becomes deeper than before, and the strength of the lock of the lid with respect to the container can be made higher than before.

請求項２の蓋体では、ロック部材を第１回動位置及び第２回動位置に係止させるための弾性係合片が、ロック部材の回動中心回りの円弧に沿って延びているので、ロック部材全体をコンパクトにしながらも弾性係合片を長くすることができ、弾性変形に伴う負荷が分散されて耐久性が高くなる。 In the lid of claim 2 , the elastic engaging piece for locking the lock member to the first rotation position and the second rotation position extends along an arc around the rotation center of the lock member. The elastic engaging piece can be lengthened while making the entire lock member compact, and the load due to the elastic deformation is dispersed to improve the durability.

請求項３の蓋体では、ロック部材の上部係合片が、下支持壁と上支持壁とに上下方向から挟まれるので、ロック部材の回転が安定する。また、弾性係合片は、その先方に位置する上部係合片の先端対向壁によって保護される。さらに、その先端対向壁には弾性係合片に近づくに従って下方に向かうように傾斜した進入ガイド部が備えられているので、先端対向壁をスムーズに上支持壁と下支持壁との間に進入させることができる。 In the lid body of claim 3 , since the upper engaging piece of the lock member is sandwiched between the lower support wall and the upper support wall from the vertical direction, the rotation of the lock member is stable. Further, the elastic engaging piece is protected by the tip facing wall of the upper engaging piece located beyond the elastic engaging piece. Furthermore, since the tip facing wall is provided with an approach guide portion that is inclined downward as it approaches the elastic engagement piece, the tip facing wall smoothly enters between the upper support wall and the lower support wall. Can be made to.

請求項４の蓋体では、ロック部材が第２回動位置に位置したときに、ロック突片のうち上端フランジに最も近い部位が、上端フランジの外側に嵌合する嵌合部の内側面から延長された面上か又はそれより外側に位置するので、コンテナに対する蓋体の脱着時に上端フランジとロック部材との干渉が確実に防がれる。

In the lid body of claim 4 , when the lock member is positioned at the second rotation position, the portion of the lock protrusion closest to the upper end flange is from the inner surface of the fitting portion fitted to the outside of the upper end flange. Since it is located on or outside the extended surface, interference between the upper end flange and the locking member is reliably prevented when the lid is attached to or detached from the container.

本発明の一実施形態に係る蓋体とコンテナのロック状態の斜視図Perspective view of the locked state of the lid and the container according to the embodiment of the present invention. 蓋体とコンテナのロック解除状態の斜視図Perspective view of the unlocked state of the lid and container 蓋体の裏面側の斜視図Perspective view of the back side of the lid 蓋体とコンテナのロック状態の側断面図Side cross-section of the lid and container in the locked state 蓋体とコンテナのロック解除状態の側断面図Side sectional view of the lid and the container in the unlocked state 回動支持部の拡大斜視図Enlarged perspective view of the rotation support 回動支持部を下方から見た一部破断の拡大斜視図Enlarged perspective view of a partial fracture when the rotation support part is viewed from below ロック部材の上面側の斜視図Top view of the lock member ロック部材の下面側の斜視図Perspective view of the lower surface side of the lock member 第２回動位置のロック部材と回動支持部の斜視図Perspective view of the lock member at the second rotation position and the rotation support portion 第１回動位置のロック部材と回動支持部の斜視図Perspective view of the lock member at the first rotation position and the rotation support portion （Ａ）第２回動位置のロック部材と回動支持部の平面図，（Ｂ）第１回動位置のロック部材と回動支持部の平面図(A) Plan view of the lock member and the rotation support portion at the second rotation position, (B) Plan view of the lock member and the rotation support portion at the first rotation position. （Ａ）第２回動位置のロック部材と回動支持部の平断面図，（Ｂ）第１回動位置のロック部材と回動支持部の平断面図(A) plan cross-sectional view of the lock member and the rotation support portion at the second rotation position, (B) plan cross-sectional view of the lock member and the rotation support portion at the first rotation position. （Ａ）第２回動位置のロック部材と回動支持部の底断面図，（Ｂ）第１回動位置のロック部材と回動支持部の底断面図(A) bottom cross-sectional view of the lock member and the rotation support portion at the second rotation position, (B) bottom cross-sectional view of the lock member and the rotation support portion at the first rotation position. 第１と第２の回動位置の間のロック部材と回動支持部の底断面図Bottom sectional view of the lock member and the rotation support portion between the first and second rotation positions. （Ａ）第２実施形態の回動支持部とロック部材の上側斜視図，（Ｂ）その下側斜視図(A) Upper perspective view of the rotation support portion and the lock member of the second embodiment, (B) lower perspective view thereof. （Ａ）第３実施形態の回動支持部とロック部材の上側斜視図，（Ｂ）その下側斜視図(A) Upper perspective view of the rotation support portion and the lock member of the third embodiment, (B) lower perspective view thereof. （Ａ）第２回動位置のロック部材の斜視図，（Ｂ）第１回動位置のロック部材の斜視図(A) perspective view of the lock member at the second rotation position, (B) perspective view of the lock member at the first rotation position.

［第１実施形態］
以下、本発明の一実施形態を図１～図１５に基づいて説明する。図１には、本発明に係る蓋体１０がコンテナ９０に装着された状態が示されている。コンテナ９０は、平面形状が長方形で上面が開放した直方体状をなし、その上端から側方に上端フランジ９１が張り出すと共に、下端から側方に下端フランジ９２が張り出している。また、コンテナ９０の四隅のコーナー部及びそれらの近傍には、上下方向に延びて上端フランジ９１と下端フランジ９２との間を連絡する縦リブ９３が備えられている。さらに、コンテナ９０の下面の略全体には、下端フランジ９２の下面より下方に突出する図示しない下面突部が備えられ、コンテナ９０，９０同士を段積みしたときに、下段側のコンテナ９０の上面開口９０Ｋに、上段側のコンテナ９０の下面突部が嵌合して上下のコンテナ９０，９０の横ずれが規制される。 [First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 15. FIG. 1 shows a state in which the lid 10 according to the present invention is mounted on the container 90. The container 90 has a rectangular parallelepiped shape with a rectangular planar shape and an open upper surface, and the upper end flange 91 projects laterally from the upper end thereof, and the lower end flange 92 projects laterally from the lower end. Further, vertical ribs 93 extending in the vertical direction and connecting between the upper end flange 91 and the lower end flange 92 are provided at the four corners of the container 90 and in the vicinity thereof. Further, substantially the entire lower surface of the container 90 is provided with a lower surface protrusion (not shown) protruding below the lower surface of the lower end flange 92, and when the containers 90 and 90 are stacked, the upper surface of the lower container 90 is provided. The lower surface protrusion of the upper container 90 fits into the opening 90K, and lateral displacement of the upper and lower containers 90, 90 is restricted.

蓋体１０は、コンテナ９０の上端フランジ９１の上面に重なる蓋本体部１１から、上端フランジ９１の外側に嵌合される嵌合部１２が垂下した構造をなしている。蓋本体部１１には、その外縁部に沿って土手部１３が形成されている。その土手部１３は、下面開放の断面角溝状をなしている。そして、蓋体１０の上にコンテナ９０を段積みすると、そのコンテナ９０を下面突部が土手部１３の内側に嵌合して横ずれが規制される。 The lid 10 has a structure in which a fitting portion 12 fitted to the outside of the upper end flange 91 hangs down from a lid main body portion 11 that overlaps the upper surface of the upper end flange 91 of the container 90. A bank portion 13 is formed on the lid main body portion 11 along the outer edge portion thereof. The bank portion 13 has a square groove-like cross section with an open bottom surface. Then, when the container 90 is stacked on the lid 10, the lower surface protrusion of the container 90 fits inside the bank portion 13, and lateral displacement is regulated.

蓋本体部１１のうち土手部１３の外側部分は、水平な外縁水平部１４となって土手部１３全体を取り囲み、その外縁水平部１４によって土手部１３と外縁水平部１４との間に段差が形成されている。蓋本体部１１のうち土手部１３より内側部分は、水平な内側水平部１５をなし、外縁水平部１４より僅かに上方に位置している。また、図３に示すように、内側水平部１５の下面のうち土手部１３から僅かに内側にずれた位置からは、枠形リブ１６が垂下され、その枠形リブ１６の下端部は、外縁水平部１４より下方に位置している（図４参照）。 The outer portion of the bank portion 13 of the lid main body portion 11 becomes a horizontal outer edge horizontal portion 14 and surrounds the entire bank portion 13, and the outer edge horizontal portion 14 creates a step between the bank portion 13 and the outer edge horizontal portion 14. It is formed. The inner portion of the lid main body portion 11 from the bank portion 13 forms a horizontal inner horizontal portion 15, and is located slightly above the outer edge horizontal portion 14. Further, as shown in FIG. 3, the frame-shaped rib 16 hangs down from a position slightly inwardly displaced from the bank portion 13 on the lower surface of the inner horizontal portion 15, and the lower end portion of the frame-shaped rib 16 is an outer edge. It is located below the horizontal portion 14 (see FIG. 4).

図３に示すように、土手部１３の内部には、土手部１３を幅方向に横切るように複数の補強リブ１７が形成され、それら補強リブ１７の下面は、外縁水平部１４の下面と面一になっている。また、補強リブ１７の幅方向の一端部は枠形リブ１６まで延長され、その延長部分が内側水平部１５の下面から突出している。そして、図４に示すように、コンテナ９０の上端フランジ９１が、蓋体１０の嵌合部１２と枠形リブ１６との間に嵌合され、蓋本体部１１の一部を構成する補強リブ１７、外縁水平部１４及び後述する下支持壁１５Ｗの下面が、上端フランジ９１の上面に重なる。 As shown in FIG. 3, a plurality of reinforcing ribs 17 are formed inside the bank portion 13 so as to cross the bank portion 13 in the width direction, and the lower surface of the reinforcing ribs 17 is the lower surface and the surface of the outer edge horizontal portion 14. It is one. Further, one end of the reinforcing rib 17 in the width direction is extended to the frame-shaped rib 16, and the extended portion protrudes from the lower surface of the inner horizontal portion 15. Then, as shown in FIG. 4, the upper end flange 91 of the container 90 is fitted between the fitting portion 12 of the lid body 10 and the frame-shaped rib 16, and the reinforcing ribs forming a part of the lid main body portion 11 are formed. 17, the lower surface of the outer edge horizontal portion 14 and the lower support wall 15W described later overlaps the upper surface of the upper end flange 91.

図１及び図２に示すように、蓋体１０の外縁部のうち１対の長辺の両端寄り位置の計４箇所には回動支持部１８が設けられ、それら回動支持部１８にロック部材４０が回動可能に取り付けられている。また、回動支持部１８には、互いに対称な２種類が備えられ、それら回動支持部１８が、蓋体１０の縦横両方向で対称となるように配置されている。これに対応してロック部材４０にも互いに対称な２種類が備えられている。 As shown in FIGS. 1 and 2, rotation support portions 18 are provided at a total of four locations near both ends of a pair of long sides of the outer edge portion of the lid 10, and the rotation support portions 18 are locked. The member 40 is rotatably attached. Further, the rotation support portion 18 is provided with two types symmetrical to each other, and the rotation support portions 18 are arranged so as to be symmetrical in both the vertical and horizontal directions of the lid body 10. Correspondingly, the lock member 40 is also provided with two types symmetrical to each other.

図６に示すように回動支持部１８には、嵌合部１２を貫通する貫通孔１９と、土手部１３を分断する分断部１３Ａとが備えられている。貫通孔１９は、横長の長方形をなし、嵌合部１２の下端寄り位置から外縁水平部１４に亘って形成されている。 As shown in FIG. 6, the rotation support portion 18 is provided with a through hole 19 that penetrates the fitting portion 12 and a division portion 13A that divides the bank portion 13. The through hole 19 has a horizontally long rectangular shape, and is formed from a position near the lower end of the fitting portion 12 to the outer edge horizontal portion 14.

分断部１３Ａは、土手部１３の一部を貫通孔１９の横方向の全長より長く分断してなる。また、図１に示すように、分断部１３Ａ及び貫通孔１９のうち蓋体１０のコーナー部に近い側の一端は、蓋体１０の長手方向で概ね同じ位置に配置されている。 The dividing portion 13A divides a part of the bank portion 13 longer than the total length in the lateral direction of the through hole 19. Further, as shown in FIG. 1, one end of the divided portion 13A and the through hole 19 on the side close to the corner portion of the lid 10 is arranged at substantially the same position in the longitudinal direction of the lid 10.

図６に示すように、分断部１３Ａを挟んで対向する土手部１３の分断面１３Ｂ，１３Ｃの間には、上支持壁２０が差し渡されている。上支持壁２０は、帯板状をなして分断面１３Ｂ，１３Ｃの下端寄り位置に配置されている。上支持壁２０の幅は、一端部を除いて土手部１３の幅より小さくなっていて、上支持壁２０の外側の側面は、土手部１３の外側の側面より内側にずれ、上支持壁２０の内側の側面は、土手部１３の内側の側面と面一になっている。そして、上支持壁２０のうち蓋体１０のコーナー部側の一端部を段付き状に幅広にして拡張部２０Ｂが形成され、その拡張部２０Ｂの外側の側面と、土手部１３の外側の側面とが面一になっている。 As shown in FIG. 6, the upper support wall 20 is passed between the divided sections 13B and 13C of the bank portions 13 facing each other with the divided portion 13A interposed therebetween. The upper support wall 20 has a strip-like shape and is arranged at a position near the lower end of the sectional cross sections 13B and 13C. The width of the upper support wall 20 is smaller than the width of the bank portion 13 except for one end, and the outer side surface of the upper support wall 20 is displaced inward from the outer side surface of the bank portion 13, and the upper support wall 20 is The inner side surface of the bank portion 13 is flush with the inner side surface of the bank portion 13. Then, the expansion portion 20B is formed by widening one end of the upper support wall 20 on the corner portion side in a stepped manner, and the outer side surface of the expansion portion 20B and the outer side surface of the bank portion 13 are formed. And are flush with each other.

拡張部２０Ｂから離れた側の一方の分断面１３Ｃの両側縁部と上支持壁２０の上面の両側縁部との間は１対のリブ２１，２１にて連絡されている。それらリブ２１，２１の上面は、土手部１３の上面より下方に位置し、分断面１３Ｃから水平に延び、途中から徐々に低くなるように傾斜している。なお、リブ２１，２１の先端は、貫通孔１９における分断面１３Ｃ側の端部に略重なる位置に配置されている。 A pair of ribs 21 and 21 communicate between both side edges of one of the sectional sections 13C on the side away from the expansion portion 20B and both side edges of the upper surface of the upper support wall 20. The upper surfaces of the ribs 21 and 21 are located below the upper surface of the bank portion 13, extend horizontally from the sectional cross section 13C, and are inclined so as to be gradually lowered from the middle. The tips of the ribs 21 and 21 are arranged at positions that substantially overlap with the end portion of the through hole 19 on the sectional cross section 13C side.

上支持壁２０のうちリブ２１，２１に挟まれた部分には、円弧状の回動係合溝２２が形成されている。その回動係合溝２２の円弧を一部に含む円の中心ＣＬ１（以下、同様の説明の際には、単に「円弧の中心」という）は、図１２（Ａ）に示すように、外側のリブ２１の外側面と分断面１３Ｃとが交差する角部の近傍で、上支持壁２０及びリブ２１より外側に位置している。また、上支持壁２０のうち貫通孔１９に対応する部分には、外側から上支持壁２０の一部を湾曲形状に切除してなる湾状切欠２０Ａが備えられている。 An arcuate rotating engagement groove 22 is formed in a portion of the upper support wall 20 sandwiched between the ribs 21 and 21. As shown in FIG. 12A, the center CL1 of the circle including the arc of the rotation engaging groove 22 (hereinafter, simply referred to as “the center of the arc” in the same description) is outside. It is located outside the upper support wall 20 and the rib 21 in the vicinity of the corner where the outer surface of the rib 21 and the sectional cross section 13C intersect. Further, the portion of the upper support wall 20 corresponding to the through hole 19 is provided with a bay-shaped notch 20A formed by cutting a part of the upper support wall 20 into a curved shape from the outside.

蓋本体部１１のうち上支持壁２０に覆われている部分は、外縁水平部１４と上面が面一の下支持壁１５Ｗになっている。下支持壁１５Ｗは、蓋本体部１１のうち土手部１３より内側部分まで延長されて内側水平部１５との間に段差面２４を有する。そして、その段差面２４より内側部分が、後述する上面押え片４５を受容するための第１受容凹部２４Ｘになっている。 The portion of the lid main body 11 covered by the upper support wall 20 is a lower support wall 15W whose outer edge horizontal portion 14 and the upper surface are flush with each other. The lower support wall 15W extends from the bank portion 13 to the inner portion of the lid main body portion 11 and has a stepped surface 24 between the lower support wall 15W and the inner horizontal portion 15. The portion inside the stepped surface 24 is a first receiving recess 24X for receiving the upper surface holding piece 45, which will be described later.

段差面２４には、嵌合部１２から最も離れた部分に位置して上支持壁２０の長手方向に延びる第１直線部２４Ａと、第１直線部２４Ａにおける回動係合溝２２側の一端部に直交して上支持壁２０の下方位置まで延びる第２直線部２４Ｂと、第１直線部２４Ａにおける他端部に斜めに交差し、上支持壁２０の下方位置まで全体的に湾曲して延びる円弧部２４Ｃとが備えられている。 On the stepped surface 24, a first straight line portion 24A located at a portion farthest from the fitting portion 12 and extending in the longitudinal direction of the upper support wall 20 and one end of the first straight line portion 24A on the rotation engaging groove 22 side. The second straight line portion 24B extending orthogonally to the portion and extending to the lower position of the upper support wall 20 diagonally intersects the other end portion of the first straight line portion 24A and is curved as a whole to the lower position of the upper support wall 20. An extending arc portion 24C is provided.

図７に示すように、円弧部２４Ｃの全体は、前述の回動係合溝２２と同心の円弧状をなしている。また、円弧部２４Ｃの長手方向の途中位置には、第１被係合部２５が形成されている。第１被係合部２５は、円弧部２４Ｃの一部を外側に屈曲させてなり、その第１被係合部２５の内面は、円弧部２４Ｃ全体に対して傾斜した傾斜面を左右対称に備えた台形状になっている。また、円弧部２４Ｃのうち上支持壁２０側の端部には、第２被係合部２６が形成されている。第２被係合部２６は、円弧部２４Ｃの端部をクランク状に外側に屈曲させてなり、その段差部分は傾斜面になっている。 As shown in FIG. 7, the entire arc portion 24C has an arc shape concentric with the above-mentioned rotary engagement groove 22. Further, a first engaged portion 25 is formed at an intermediate position in the longitudinal direction of the arc portion 24C. The first engaged portion 25 is formed by bending a part of the arc portion 24C outward, and the inner surface of the first engaged portion 25 is symmetrical with respect to the inclined surface inclined with respect to the entire arc portion 24C. It has a trapezoidal shape. Further, a second engaged portion 26 is formed at an end portion of the arc portion 24C on the upper support wall 20 side. The second engaged portion 26 is formed by bending the end portion of the arc portion 24C outward in a crank shape, and the stepped portion thereof is an inclined surface.

図６に示すように、上支持壁２０の回動係合溝２２を有する側の端部寄り位置には、上支持壁２０と下支持壁１５Ｗとの間を連絡する架橋支持壁２７が設けられ、その架橋支持壁２７の一側面が第２直線部２４Ｂの一部をなしている。 As shown in FIG. 6, a bridge support wall 27 that connects the upper support wall 20 and the lower support wall 15W is provided at a position near the end of the upper support wall 20 on the side having the rotation engagement groove 22. One side surface of the bridge support wall 27 forms a part of the second straight line portion 24B.

架橋支持壁２７を挟んで第１受容凹部２４Ｘの反対側には、上支持壁２０と下支持壁１５Ｗとが隙間を空けて対向する第２受容凹部２４Ｙが形成されている。その第２受容凹部２４Ｙは、嵌合部１２側が開放し、嵌合部１２から離れた側は、内側水平部１５と下支持壁１５Ｗとの間の段差面２４Ｄ（図７参照）によって閉塞されている。 On the opposite side of the first receiving recess 24X with the crosslinked support wall 27 interposed therebetween, a second receiving recess 24Y is formed in which the upper support wall 20 and the lower support wall 15W face each other with a gap. The second receiving recess 24Y is opened on the fitting portion 12 side, and the side away from the fitting portion 12 is closed by a stepped surface 24D (see FIG. 7) between the inner horizontal portion 15 and the lower support wall 15W. ing.

なお、図７に示すように、上支持壁２０のうち下面の外側縁部には、湾状切欠２０Ａと分断面１３Ｃとの間に全体に面取斜面２０Ｃが形成されている。そして、架橋支持壁２７の端部は、その面取斜面２０Ｃの手前に位置している。また、回動係合溝２２の延長線上には、導入溝２２Ａが延びて面取斜面２０Ｃを横切っている。 As shown in FIG. 7, a chamfered slope 20C is formed as a whole between the bay-shaped notch 20A and the sectional cross section 13C on the outer edge of the lower surface of the upper support wall 20. The end of the bridge support wall 27 is located in front of the chamfered slope 20C. Further, an introduction groove 22A extends on the extension line of the rotation engagement groove 22 and crosses the chamfered slope 20C.

上支持壁２０のうち湾状切欠２０Ａの奥部中央の下面には、ストッパ突部２３が形成されている。ストッパ突部２３は、湾状切欠２０Ａ側に傾斜面を有し、湾状切欠２０Ａと反対側に垂直面を有する台形状をなしている。 A stopper protrusion 23 is formed on the lower surface of the center of the inner portion of the bay-shaped notch 20A in the upper support wall 20. The stopper protrusion 23 has a trapezoidal shape having an inclined surface on the bay-shaped notch 20A side and a vertical surface on the opposite side to the bay-shaped notch 20A.

次ぎに、ロック部材４０について説明する。図８に示すように、ロック部材４０は、上下方向で対向する上部係合片４１とロック突片４２とを側部壁４３にて連絡した所謂溝形構造をなしている。そして、図４に示すように、上部係合片４１が下支持壁１５Ｗの上面に重ねられる一方、ロック突片４２が上端フランジ９１の下面に重ねられて蓋体１０をコンテナ９０にロックする。 Next, the lock member 40 will be described. As shown in FIG. 8, the lock member 40 has a so-called groove-shaped structure in which an upper engaging piece 41 and a lock projecting piece 42 facing each other in the vertical direction are connected by a side wall 43. Then, as shown in FIG. 4, the upper engaging piece 41 is superposed on the upper surface of the lower support wall 15W, while the lock projecting piece 42 is superposed on the lower surface of the upper end flange 91 to lock the lid 10 to the container 90.

具体的には、図８に示すように、上部係合片４１は、横方向に延びて全長が土手部１３の分断面１３Ｂ，１３Ｃの間隔より僅かに短いベース部４１Ｋと、ベース部４１Ｋから横並びになって突片状に張り出す上面押え片４５及び回動支持片４６とを備える。また、ベース部４１Ｋの上面からは操作リブ４４が起立してベース部４１Ｋの長手方向全体に亘って延びている。そして、図１３（Ｂ）に示すように、上面押え片４５が第１受容凹部２４Ｘに収まる一方、回動支持片４６が第２受容凹部２４Ｙに収まり、図１１に示すように、操作リブ４４が、上支持壁２０のうち拡張部２０Ｂを除く全体の外側の側面に宛がわれる。このときの、蓋体１０に対するロック部材４０の位置が本発明に係る第１回動位置に相当する。 Specifically, as shown in FIG. 8, the upper engaging piece 41 extends laterally from the base portion 41K and the base portion 41K whose total length is slightly shorter than the distance between the sectional sections 13B and 13C of the bank portion 13. It is provided with a top pressing piece 45 and a rotation support piece 46 that project side by side in the shape of a projecting piece. Further, the operation rib 44 stands up from the upper surface of the base portion 41K and extends over the entire longitudinal direction of the base portion 41K. Then, as shown in FIG. 13B, the upper surface holding piece 45 fits in the first receiving recess 24X, while the rotating support piece 46 fits in the second receiving recess 24Y, and as shown in FIG. 11, the operating rib 44 Is addressed to the outer side surface of the entire upper support wall 20 except for the extension portion 20B. The position of the lock member 40 with respect to the lid 10 at this time corresponds to the first rotation position according to the present invention.

図８に示すように、回動支持片４６の上面には、係合突条５２が備えられている。係合突条５２は、回動係合溝２２と曲率変形が略同一で回動係合溝２２より短い円弧状をなしている。また、係合突条５２の幅は、回動係合溝２２より僅かに小さくなっている。さらに、係合突条５２の円弧の中心は、操作リブ４４のうち回動支持片４６側の端面と上支持壁２０側を向いた側面とが交差する角部に配置されている。そして、図１２（Ａ）及び図１２（Ｂ）に示すように、上支持壁２０の回動係合溝２２に係合して、ロック部材４０が回動支持部１８に回動可能に支持されている。また、係合突条５２が回動係合溝２２に係合することで回動係合溝２２の円弧の中心ＣＬ１と、係合突条５２の円弧の中心とが同じになっている。以下、係合突条５２の円弧の中心も、ロック部材４０の中心も、回動係合溝２２の円弧の中心ＣＬ１と同じ符号を付して「中心ＣＬ１」という。 As shown in FIG. 8, an engaging ridge 52 is provided on the upper surface of the rotating support piece 46. The engaging ridge 52 has substantially the same curvature deformation as the rotating engaging groove 22, and has an arc shape shorter than that of the rotating engaging groove 22. Further, the width of the engaging ridge 52 is slightly smaller than that of the rotating engaging groove 22. Further, the center of the arc of the engaging ridge 52 is arranged at the corner of the operating rib 44 where the end surface on the rotation support piece 46 side and the side surface facing the upper support wall 20 side intersect. Then, as shown in FIGS. 12A and 12B, the lock member 40 is rotatably supported by the rotation support portion 18 by engaging with the rotation engagement groove 22 of the upper support wall 20. Has been done. Further, when the engaging ridge 52 engages with the rotating engaging groove 22, the center CL1 of the arc of the rotating engaging groove 22 and the center of the arc of the engaging ridge 52 are the same. Hereinafter, the center of the arc of the engaging ridge 52 and the center of the lock member 40 are referred to as "center CL1" with the same reference numerals as the center CL1 of the arc of the rotating engaging groove 22.

なお、図８に示すように、係合突条５２を回動係合溝２２に係合させるために、係合突条５２の一端部は徐々に低くなるように傾斜した傾斜面５２Ａになっている。そして、傾斜面５２Ａを前述の上支持壁２０の導入溝２２Ａ（図７参照）に臨ませた状態でロック部材４０を回動させることで、上支持壁２０を僅かに上方に弾性変形させながら係合突条５２を回動係合溝２２内に押し込むことができる。 As shown in FIG. 8, in order to engage the engaging ridge 52 with the rotating engaging groove 22, one end of the engaging ridge 52 becomes an inclined surface 52A inclined so as to be gradually lowered. ing. Then, by rotating the lock member 40 with the inclined surface 52A facing the introduction groove 22A (see FIG. 7) of the above-mentioned upper support wall 20, the upper support wall 20 is elastically deformed slightly upward. The engaging ridge 52 can be pushed into the rotating engaging groove 22.

回動支持片４６の外縁部には、中心ＣＬ１から離れた側に円弧状の側面４６Ａが備えられている。また、その側面４６Ａの反対側の側面４６Ｂは、ベース部４１Ｋの長手方向と直交する方向に延び、それら側面４６Ａ，４６Ｂに挟まれた回動支持片４６の先端面４６Ｃはベース部４１Ｋの長手方向と平行に延びている。そして、図１３（Ｂ）に示すように、ロック部材４０が第１回動位置に配置されると、側面４６Ｂが第２受容凹部２４Ｙの内側面に隣接するか面当接する。 The outer edge of the rotation support piece 46 is provided with an arcuate side surface 46A on the side away from the center CL1. Further, the side surface 46B on the opposite side of the side surface 46A extends in a direction orthogonal to the longitudinal direction of the base portion 41K, and the tip surface 46C of the rotation support piece 46 sandwiched between the side surfaces 46A and 46B is the longitudinal length of the base portion 41K. It extends parallel to the direction. Then, as shown in FIG. 13B, when the lock member 40 is arranged at the first rotation position, the side surface 46B is adjacent to or in contact with the inner surface of the second receiving recess 24Y.

図８に示すように、上面押え片４５は、回動支持片４６に概ね相似し、回動支持片４６より大きくなっている。即ち、上面押え片４５は、回動支持片４６と同様に、中心ＣＬ１から離れた側に円弧状の側面４５Ａを備えると共に、その反対側にベース部４１Ｋの長手方向と直交する方向に延びる側面４５Ｂを備え、さらに、先端にベース部４１Ｋの長手方向と平行な先端面４５Ｃを備えている。また、上面押え片４５の側面４５Ａと回動支持片４６の側面４６Ａは、前述の中心ＣＬ１を共通の中心とする同心の円弧になっている。さらに、上面押え片４５の外形は、第１受容凹部２４Ｘと略同一で、図１３（Ｂ）に示すように、ロック部材４０が第１回動位置に配置されたときに、上面押え片４５が第１受容凹部２４Ｘに丁度収まる。 As shown in FIG. 8, the upper surface holding piece 45 is substantially similar to the rotating support piece 46 and is larger than the rotating support piece 46. That is, the upper surface holding piece 45 is provided with an arcuate side surface 45A on the side away from the center CL1 and a side surface extending on the opposite side in a direction orthogonal to the longitudinal direction of the base portion 41K, similarly to the rotation support piece 46. It is provided with 45B, and further has a tip surface 45C parallel to the longitudinal direction of the base portion 41K at the tip. Further, the side surface 45A of the upper surface holding piece 45 and the side surface 46A of the rotation support piece 46 are concentric arcs having the above-mentioned center CL1 as a common center. Further, the outer shape of the upper surface pressing piece 45 is substantially the same as that of the first receiving recess 24X, and as shown in FIG. 13B, when the lock member 40 is arranged at the first rotation position, the upper surface pressing piece 45 Just fits in the first receiving recess 24X.

図８に示すように、上面押え片４５の上面には、中心ＣＬ１を中心とする円弧状の上面溝５０が形成されている。上面溝５０の一端部は、上面押え片４５の側面４５Ｂに開口し、上面溝５０の一端寄り位置を回動規制リブ５１が横切っている。そして、図１３（Ａ）に示すように、ストッパ突部２３が上面溝５０の他端部と回動規制リブ５１との間に係合して、ロック部材４０が第２回動位置に位置すると、ストッパ突部２３の垂直面が回動規制リブ５１に隣接するか当接してロック部材４０が第２回動位置より外側に回動することを規制する。 As shown in FIG. 8, an arc-shaped upper surface groove 50 centered on the center CL1 is formed on the upper surface of the upper surface pressing piece 45. One end of the upper surface groove 50 is opened on the side surface 45B of the upper surface holding piece 45, and the rotation restricting rib 51 crosses the position near one end of the upper surface groove 50. Then, as shown in FIG. 13A, the stopper protrusion 23 engages between the other end of the upper surface groove 50 and the rotation restricting rib 51, and the lock member 40 is positioned at the second rotation position. Then, the vertical surface of the stopper protrusion 23 is adjacent to or in contact with the rotation restricting rib 51, and the lock member 40 is restricted from rotating outward from the second rotation position.

図８に示すように、上面押え片４５のうち上面溝５０より回動中心から離れた位置には、中心ＣＬ１を中心とする円弧状のスリット４５Ｓが形成され、そのスリット４５Ｓのベース部４１Ｋ側の一端部が屈曲して側面４５Ａに開放し、上面押え片４５の一部が弾性係合片４７として切り離されている。また、弾性係合片４７の先端寄り位置からは、側方に向かって係合突部４８（本発明の「係合部」に相当する）が突出している。その係合突部４８は、第１被係合部２５に対応した台形状になっている。そして、図１３（Ｂ）に示すように、ロック部材４０が第１回動位置に配置された状態で係合突部４８が第１被係合部２５に係合し、そこからロック部材４０が外側に回動してロック部材４０が第２回動位置に至ると、図１３（Ａ）に示すように、係合突部４８が第２被係合部２６に係合する。また、このとき、図１２（Ａ）に示すように、係合突条５２及び回動係合溝２２の一端部同士が当接するか隣接する。 As shown in FIG. 8, an arcuate slit 45S centered on the center CL1 is formed at a position of the upper surface holding piece 45 away from the rotation center from the upper surface groove 50, and the base portion 41K side of the slit 45S is formed. One end of the upper surface holding piece 45 is bent and opened to the side surface 45A, and a part of the upper surface holding piece 45 is separated as an elastic engaging piece 47. Further, the engaging protrusion 48 (corresponding to the "engaging portion" of the present invention) protrudes laterally from the position near the tip of the elastic engaging piece 47. The engaging protrusion 48 has a trapezoidal shape corresponding to the first engaged portion 25. Then, as shown in FIG. 13B, the engaging protrusion 48 engages with the first engaged portion 25 in a state where the lock member 40 is arranged at the first rotation position, and the lock member 40 is engaged from there. Rotates outward and the lock member 40 reaches the second rotation position, the engaging protrusion 48 engages with the second engaged portion 26, as shown in FIG. 13 (A). Further, at this time, as shown in FIG. 12A, one end portions of the engaging ridge 52 and the rotating engaging groove 22 are in contact with each other or adjacent to each other.

なお、図８に示すように、上面押え片４５のうち弾性係合片４７の先端が突き合わされる先端対向壁４９の上面には、弾性係合片４７側に向かって下る進入ガイド部４９Ａが形成されている。また図９に示すように上面押え片４５及び回動支持片４６の両下面には、ベース部４１Ｋの長手方向と直交する方向に延びる摺接突条４１Ｔが備えられている。 As shown in FIG. 8, an approach guide portion 49A descending toward the elastic engaging piece 47 side is provided on the upper surface of the tip facing wall 49 to which the tip of the elastic engaging piece 47 is abutted among the upper surface holding pieces 45. It is formed. Further, as shown in FIG. 9, both lower surfaces of the upper surface pressing piece 45 and the rotation support piece 46 are provided with sliding contact ridges 41T extending in a direction orthogonal to the longitudinal direction of the base portion 41K.

図８に示すように、側部壁４３は、横長の四角形をなして、ベース部４１Ｋから垂下している。その側部壁４３の横方向の一端部は上面押え片４５と回動支持片４６との間の中間に位置する一方、他端部は上面押え片４５の側面４５Ａと面一になっている。そして、図１１に示すように、ロック部材４０が第１回動位置に位置したときに、側部壁４３が貫通孔１９に丁度収まり、図１２（Ｂ）に示すように、側部壁４３の外面が嵌合部１２の外面と面一かそれより内側に位置する。 As shown in FIG. 8, the side wall 43 forms a horizontally long quadrangle and hangs down from the base portion 41K. One end of the side wall 43 in the lateral direction is located between the upper surface presser piece 45 and the rotary support piece 46, while the other end is flush with the side surface 45A of the upper surface presser piece 45. .. Then, as shown in FIG. 11, when the lock member 40 is positioned at the first rotation position, the side wall 43 just fits in the through hole 19, and as shown in FIG. 12B, the side wall 43 The outer surface of the fitting portion 12 is flush with the outer surface of the fitting portion 12 or is located inside the outer surface of the fitting portion 12.

図９に示すように、ロック突片４２は、側部壁４３と同じ横幅の長方形をなして水平に延びている。また、ロック突片４２の平面形状である長方形のうちロック部材４０の回動の中心ＣＬ１側の先端角部は、その先端角部を直線状に横切る折り曲げ線ＣＬ２で下方に折り曲げられて傾斜ガイド部５３が形成されている。また、その傾斜ガイド部５３の先端は、折り曲げ線ＣＬ２と平行に面取りされている。 As shown in FIG. 9, the lock projecting piece 42 forms a rectangle having the same width as the side wall 43 and extends horizontally. Further, of the rectangular shape of the plan surface of the lock protrusion 42, the tip corner portion on the center CL1 side of the rotation of the lock member 40 is bent downward by a bending line CL2 that linearly crosses the tip corner portion to guide the inclination. The portion 53 is formed. Further, the tip of the inclined guide portion 53 is chamfered in parallel with the bending line CL2.

詳細には、図５に示すように傾斜ガイド部５３は、ロック突片４２の上面に対して傾斜したガイド面５３Ａと、そのガイド面５３Ａの裏側に位置しかつガイド面５３Ａと平行な裏面５３Ｄと、水平な下面５３Ｂと、下面５３Ｂと直交し、折り曲げ線ＣＬ２と平行な先端面５３Ｃとを有する。そして、ロック部材４０が第２回動位置に配置されたときに（図５に示した状態）、傾斜ガイド部５３の先端面５３Ｃが嵌合部１２の貫通孔１９内で、嵌合部１２の内側面より僅かに外側に位置する。 Specifically, as shown in FIG. 5, the inclined guide portion 53 has a guide surface 53A inclined with respect to the upper surface of the lock projecting piece 42, and a back surface 53D located behind the guide surface 53A and parallel to the guide surface 53A. It has a horizontal lower surface 53B and a tip surface 53C orthogonal to the lower surface 53B and parallel to the bending line CL2. Then, when the lock member 40 is arranged at the second rotation position (the state shown in FIG. 5), the tip surface 53C of the inclined guide portion 53 is inside the through hole 19 of the fitting portion 12, and the fitting portion 12 It is located slightly outside the inner surface of the.

本実施形態の蓋体１０の構成に関する説明は以上である。次ぎに、本実施形態の蓋体１０の作用効果について説明する。蓋体１０をコンテナ９０に取り付けるには、図２に示すように、全てのロック部材４０を第２回動位置に配置して蓋体１０をコンテナ９０の上面に載置する。 This concludes the description of the configuration of the lid 10 of the present embodiment. Next, the action and effect of the lid 10 of the present embodiment will be described. To attach the lid 10 to the container 90, as shown in FIG. 2, all the lock members 40 are arranged at the second rotation position, and the lid 10 is placed on the upper surface of the container 90.

このとき、ロック部材４０は第２回動位置に配置されると蓋体１０内にロック部材４０は突出しない状態になる。詳細には、図１３（Ａ）に示すように、ロック部材４０は、係合突部４８と第２被係合部２６との係合によって第２回動位置に保持され、その第２回動位置では、図１４（Ａ）に示すように、ロック部材４０のロック突片４２が、蓋体１０の嵌合部１２内に突出しない状態になる。これにより、上端フランジ９１の先端がロック突片４２の先端に引っ掛かることなく蓋体１０をコンテナ９０の上面にスムーズに載置することができる。しかも、ロック突片４２は、嵌合部１２内に突出しないだけではなく、図５に示すように、ロック突片４２のうち最も上端フランジ９１側に位置する傾斜ガイド部５３の先端面５３Ｃが、嵌合部１２の貫通孔１９内、即ち、嵌合部１２の外側面と内側面との間に位置するので、ロック突片４２と嵌合部１２の外側面との間に異物が挟まることが防がれる。 At this time, when the lock member 40 is arranged at the second rotation position, the lock member 40 does not protrude into the lid 10. Specifically, as shown in FIG. 13 (A), the lock member 40 is held in the second rotation position by the engagement between the engaging protrusion 48 and the second engaged portion 26, and the second rotation thereof. In the moving position, as shown in FIG. 14A, the lock projecting piece 42 of the lock member 40 does not protrude into the fitting portion 12 of the lid 10. As a result, the lid 10 can be smoothly placed on the upper surface of the container 90 without the tip of the upper end flange 91 being caught by the tip of the lock projecting piece 42. Moreover, not only does the lock protrusion 42 not project into the fitting portion 12, but as shown in FIG. 5, the tip surface 53C of the inclined guide portion 53 located on the uppermost flange 91 side of the lock protrusion 42 is formed. Since it is located in the through hole 19 of the fitting portion 12, that is, between the outer surface and the inner surface of the fitting portion 12, foreign matter is caught between the lock projection piece 42 and the outer surface of the fitting portion 12. Is prevented.

蓋体１０がコンテナ９０の上に載置されると、図５に示すように、コンテナ９０の上端部が蓋体１０の嵌合部１２の内側に嵌合され、コンテナ９０の上端フランジ９１の上面に蓋体１０の外縁部が重なる。蓋体１０をコンテナ９０にロックするには、この状態でロック部材４０を第１回動位置まで回動させればよい。具体的には、第２回動位置のロック部材４０の側部壁４３又は操作リブ４４を側方から押せばよい。 When the lid 10 is placed on the container 90, as shown in FIG. 5, the upper end portion of the container 90 is fitted inside the fitting portion 12 of the lid 10, and the upper end flange 91 of the container 90 is fitted. The outer edge of the lid 10 overlaps the upper surface. In order to lock the lid 10 to the container 90, the lock member 40 may be rotated to the first rotation position in this state. Specifically, the side wall 43 or the operation rib 44 of the lock member 40 at the second rotation position may be pushed from the side.

すると、係合突部４８が第２被係合部２６の段差部分に乗り上がって弾性係合片４７が弾性変形し、係合突部４８と第２被係合部２６との係合が解除される。そして、図１５に示すように、ロック突片４２が傾斜ガイド部５３側から上端フランジ９１に接近し、ガイド面５３Ａが上端フランジ９１に摺接してロック突片４２が上端フランジ９１の下方に入り込む。 Then, the engaging protrusion 48 rides on the stepped portion of the second engaged portion 26, the elastic engaging piece 47 is elastically deformed, and the engaging protrusion 48 and the second engaged portion 26 are engaged with each other. It will be released. Then, as shown in FIG. 15, the lock projecting piece 42 approaches the upper end flange 91 from the inclined guide portion 53 side, the guide surface 53A slides into contact with the upper end flange 91, and the lock projecting piece 42 enters below the upper end flange 91. ..

ロック部材４０が第１回動位置に至ると、図１１に示すように、ロック部材４０の側部壁４３が嵌合部１２と平行になって貫通孔１９内丁度収まり、貫通孔１９が側部壁４３によって閉じられた状態になる。また、図１３（Ｂ）に示すように、弾性係合片４７の係合突部４８が第１被係合部２５に係合してロック部材４０が第１回動位置に保持される。そして、図４に示すように、ロック部材４０の上部係合片４１とロック突片４２とにより、蓋本体部１１の下支持壁１５Ｗとコンテナ９０の上端フランジ９１とが上下方向で挟まれた状態になって蓋体１０がコンテナ９０にロックされる。 When the lock member 40 reaches the first rotation position, as shown in FIG. 11, the side wall 43 of the lock member 40 is parallel to the fitting portion 12 and just fits inside the through hole 19, and the through hole 19 is on the side. It is closed by the part wall 43. Further, as shown in FIG. 13B, the engaging protrusion 48 of the elastic engaging piece 47 engages with the first engaged portion 25, and the lock member 40 is held at the first rotation position. Then, as shown in FIG. 4, the lower support wall 15W of the lid main body 11 and the upper end flange 91 of the container 90 are sandwiched in the vertical direction by the upper engaging piece 41 of the lock member 40 and the lock projecting piece 42. In the state, the lid 10 is locked to the container 90.

なお、蓋体１０をコンテナ９０から取り外すには、上記操作を逆の順序の操作を行えばよい。その際、操作リブ４４のうち上支持壁２０の湾状切欠２０Ａに対応する部分に指を宛がえば、指先を湾状切欠２０Ａ内に突入させる位置まで深く操作リブ４４に係合させて、ロック部材４０を容易に図１０に示した第２回動位置まで回動させることができる。 In order to remove the lid 10 from the container 90, the above operations may be performed in the reverse order. At that time, if a finger is placed on the portion of the operation rib 44 corresponding to the bay-shaped notch 20A of the upper support wall 20, the fingertip is deeply engaged with the operation rib 44 to the position where the fingertip is inserted into the bay-shaped notch 20A. The lock member 40 can be easily rotated to the second rotation position shown in FIG.

上述したように本実施形態の蓋体１０では、ロック部材４０のロック突片４２に備えた傾斜ガイド部５３が、ロック突片４２の回動の中心ＣＬ１側の先端角部を、その先端角部を横切る折り曲げ線ＣＬ２で斜め下方に曲げてなるので、ロック部材４０を第１回動位置まで回動させたときに、ロック突片４２の先端部のうち回動の中心ＣＬ１側の先端角部以外の部分を上端フランジ９１に深く係合させることができる。これにより、ロック突片４２と上端フランジとの係合が従来より深くなり、コンテナ９０に対する蓋１０のロックの強度を従来より高くすることができる。 As described above, in the lid 10 of the present embodiment, the inclined guide portion 53 provided on the lock projecting piece 42 of the lock member 40 has the tip angle of the tip angle portion on the CL1 side of the center of rotation of the lock projecting piece 42. Since it is bent diagonally downward along the bending line CL2 that crosses the portion, when the lock member 40 is rotated to the first rotation position, the tip angle of the tip portion of the lock projecting piece 42 on the center CL1 side of rotation. A portion other than the portion can be deeply engaged with the upper end flange 91. As a result, the engagement between the lock protrusion 42 and the upper end flange becomes deeper than before, and the lock strength of the lid 10 with respect to the container 90 can be made higher than before.

換言すれば、図４に示すようにコンテナ９０の上端フランジ９１に対して蓋体１０の嵌合部１２及び枠形リブ１６の嵌合が緩くても、蓋体１０をコンテナ９０にロックすることができ、サイズが僅かずつ異なる複数種類のコンテナ９０に蓋体１０を兼用して使用することが可能になる。 In other words, as shown in FIG. 4, even if the fitting portion 12 of the lid 10 and the frame-shaped rib 16 are loosely fitted to the upper end flange 91 of the container 90, the lid 10 is locked to the container 90. This makes it possible to use the lid 10 in combination with a plurality of types of containers 90 having slightly different sizes.

また、蓋体１０では、傾斜ガイド部５３の先端が、折り曲げ線ＣＬ２と略平行に面取りされているので、ロック部材４０が第２回動位置に配置された際の傾斜ガイド部５３の上端フランジ９１側への突出量が抑えられる。これにより、第１回動位置と第２回動位置との間の回動角度を抑えることができる。 Further, in the lid 10, the tip of the inclined guide portion 53 is chamfered substantially parallel to the bending line CL2, so that the upper end flange of the inclined guide portion 53 when the lock member 40 is arranged at the second rotation position. The amount of protrusion to the 91 side is suppressed. As a result, the rotation angle between the first rotation position and the second rotation position can be suppressed.

さらには、ロック部材４０を第１回動位置及び第２回動位置に係止するための弾性係合片４７が、ロック部材４０の回動の中心ＣＬ１回りの円弧に沿って延びているので、ロック部材４０全体をコンパクトにしながらも弾性係合片４７を長くすることができ、弾性変形に伴う負荷が分散されて耐久性が高くなる。 Further, since the elastic engaging piece 47 for locking the lock member 40 to the first rotation position and the second rotation position extends along the arc around the center CL1 of the rotation of the lock member 40. The elastic engaging piece 47 can be lengthened while making the entire lock member 40 compact, and the load due to the elastic deformation is dispersed to improve the durability.

また、ロック部材４０に備えた上部係合片４１が、下支持壁１５Ｗと上支持壁２０とに上下方向から挟まれるので、ロック部材４０の回転が安定する。また、弾性係合片４７は、その先方に位置する上部係合片４１の先端対向壁４９によって保護される。さらに、その先端対向壁４９には弾性係合片４７に近づくに従って下方に向かうように傾斜した進入ガイド部４９Ａが備えられているので、先端対向壁４９をスムーズに下支持壁１５Ｗと上支持壁２０との間に進入させることができる。 Further, since the upper engaging piece 41 provided on the lock member 40 is sandwiched between the lower support wall 15W and the upper support wall 20 from the vertical direction, the rotation of the lock member 40 is stable. Further, the elastic engaging piece 47 is protected by the tip facing wall 49 of the upper engaging piece 41 located ahead of the elastic engaging piece 47. Further, since the tip facing wall 49 is provided with an approach guide portion 49A that is inclined downward as it approaches the elastic engagement piece 47, the tip facing wall 49 can be smoothly moved to the lower support wall 15W and the upper support wall. It can be entered between 20 and 20.

［第２実施形態］
本実施形態の蓋体１０Ｖは、図１６に示されており、本実施形態のロック部材４０Ｖは、第１実施形態のロック部材４０の回動支持片４６における上面の係合突条５２（図８参照）が下面に配置された構造になっている。これに対応して、第１実施形態の回動係合溝２２が上支持壁２０ではなく下支持壁１５Ｗに形成されている。 [Second Embodiment]
The lid body 10V of the present embodiment is shown in FIG. 16, and the lock member 40V of the present embodiment is an engaging ridge 52 on the upper surface of the rotation support piece 46 of the lock member 40 of the first embodiment (FIG. 8) is arranged on the lower surface. Correspondingly, the rotary engagement groove 22 of the first embodiment is formed not on the upper support wall 20 but on the lower support wall 15W.

また、下支持壁１５Ｗのうち第２受容凹部２４Ｙの下方部分は、第１受容凹部２４Ｘの下方部位に比べて補強のために厚肉化されて段付き状に高くなっている。これに対応して、上支持壁２０が、第１受容凹部２４Ｘと第２受容凹部２４Ｙとの間でクランク状に屈曲し、ロック部材４０Ｖの上部係合片４１が、回動支持片４６と上面押え片４５との間でクランク状に屈曲している。そして、上支持壁２０のうち第２受容凹部２４Ｙの上方部分が第１受容凹部２４Ｘの上方部位に比べて段付き状に高くなっていると共に、上部係合片４１のうち回動支持片４６が上面押え片４５に比べて段付き状に高くなっている。 Further, the lower portion of the lower support wall 15W of the second receiving recess 24Y is thickened for reinforcement and is stepped higher than the lower portion of the first receiving recess 24X. Correspondingly, the upper support wall 20 bends in a crank shape between the first receiving recess 24X and the second receiving recess 24Y, and the upper engaging piece 41 of the lock member 40V becomes the rotating support piece 46. It is bent like a crank with the upper surface holding piece 45. The upper portion of the upper support wall 20 of the second receiving recess 24Y is stepped higher than the upper portion of the first receiving recess 24X, and the rotating support piece 46 of the upper engaging pieces 41 is formed. Is stepped higher than the upper surface presser piece 45.

［第３実施形態］
本実施形態の蓋体１０Ｗは、第２実施形態を変形させたもので図１７及び図１８に示されている。前記第１及び第２の実施形態の回動支持部１８では、上支持壁２０を超えて蓋本体部１１の内側まで下支持壁１５Ｗが形成されていたが、本実施形態の回動支持部１８では、図１７（Ｂ）に示すように、下支持壁１５Ｗのうち前記第１及び第２の実施形態で上支持壁２０より内側に位置していた部分が除去され、それに替えて内側水平部１５から段付き状に上方にずれた上支持壁１５Ｖが備えられて上支持壁２０に連続している。これにより、蓋体１０Ｗの上面全体の汚れ防止が図られると共に、蓋体１０Ｗの上面の拭き取り作業が容易になる。なお、図１８に示すように、上支持壁１５Ｖには、ストッパ突部２３の一部の面を成形するための型抜き孔１５Ｕが備えられている。 [Third Embodiment]
The lid body 10W of the present embodiment is a modification of the second embodiment and is shown in FIGS. 17 and 18. In the rotation support portion 18 of the first and second embodiments, the lower support wall 15W is formed beyond the upper support wall 20 to the inside of the lid main body portion 11, but the rotation support portion of the present embodiment is formed. In 18, as shown in FIG. 17B, the portion of the lower support wall 15W that was located inside the upper support wall 20 in the first and second embodiments is removed, and instead, the inner horizontal portion is removed. An upper support wall 15V displaced upward in a stepped manner from the portion 15 is provided and is continuous with the upper support wall 20. As a result, the entire upper surface of the lid 10W can be prevented from being soiled, and the upper surface of the lid 10W can be easily wiped off. As shown in FIG. 18, the upper support wall 15V is provided with a die-cutting hole 15U for forming a part of the surface of the stopper protrusion 23.

なお、第１～第３の実施形態の蓋体１０，１０Ｖ，１０Ｗのうち蓋本体部１１とは、「コンテナ９０の上端フランジ９１の上面に重なり、前記コンテナ９０の上面開口９０Ｋを閉塞する」部分を意味する。よって、蓋本体部１１を構成する上記した下支持壁１５Ｗ、上支持壁１５Ｖ，２０、補強リブ１７，土手部１３等は、蓋本体部１１の一部でもある。 Of the lids 10, 10V, and 10W of the first to third embodiments, the lid main body 11 "overlaps the upper surface of the upper end flange 91 of the container 90 and closes the upper surface opening 90K of the container 90". Means the part. Therefore, the above-mentioned lower support wall 15W, upper support wall 15V, 20, reinforcing rib 17, bank portion 13, and the like constituting the lid main body portion 11 are also a part of the lid main body portion 11.

［他の実施形態］
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。 [Other embodiments]
The present invention is not limited to the above-described embodiment, and for example, embodiments as described below are also included in the technical scope of the present invention, and various other than the following, as long as they do not deviate from the gist. It can be changed and implemented.

（１）前記実施形態のロック突片４２の平面形状は四角形をなし、傾斜ガイド部５３を除いたロック突片４２の先端面がロック部材４０の側部壁４３と平行になっていたが、ロック突片４２の平面形状は、四角形でなくてもよく、また、ロック突片４２の先端面は側部壁４３に対して傾斜していたり、丸みを帯びた形状になっていてもよい。 (1) The planar shape of the lock projecting piece 42 of the above embodiment is quadrangular, and the tip surface of the lock projecting piece 42 excluding the inclined guide portion 53 is parallel to the side wall 43 of the lock member 40. The planar shape of the lock projecting piece 42 does not have to be a quadrangle, and the tip surface of the lock projecting piece 42 may be inclined or rounded with respect to the side wall 43.

（２）前記実施形態の傾斜ガイド部５３の先端は、折り曲げ線ＣＬ２と平行に面取りされていたが、傾斜ガイド部５３の先端が円弧状に面取りされていてもよいし、面取り自体がされていなくてもよい。 (2) The tip of the inclined guide portion 53 of the above embodiment is chamfered in parallel with the bending line CL2, but the tip of the inclined guide portion 53 may be chamfered in an arc shape, or the chamfer itself is performed. It does not have to be.

（３）前記実施形態のロック部材４０の傾斜ガイド部５３の先端面５３Ｃは、ロック部材４０が第２回動位置に配置された状態で嵌合部１２の内側面より外側に位置していたが、嵌合部１２の内側面と面一であってもよいし、嵌合部１２の内側面より僅かに突出していてもよい。 (3) The tip surface 53C of the inclined guide portion 53 of the lock member 40 of the above embodiment is located outside the inner surface of the fitting portion 12 in a state where the lock member 40 is arranged at the second rotation position. May be flush with the inner surface of the fitting portion 12, or may slightly protrude from the inner surface of the fitting portion 12.

（４）前記実施形態では、ロック部材４０が蓋体１０の縦横に対称に配置されて、全てのロック部材４０が蓋体１０のコーナー部に近い側が回動する構造になっていたが、全てのロック部材４０が蓋体１０のコーナー部から遠い側が回動する構造であってもよいし、蓋体１０のコーナー部から遠い側を中心に回動するロック部材４０と、蓋体１０のコーナー部に近い側を中心に回動するロック部材４０とが混在していてもよい。 (4) In the above embodiment, the lock members 40 are arranged symmetrically in the vertical and horizontal directions of the lid 10, and all the lock members 40 have a structure in which the side close to the corner portion of the lid 10 rotates. The lock member 40 may have a structure in which the side far from the corner portion of the lid 10 rotates, or the lock member 40 rotating about the side far from the corner portion of the lid 10 and the corner of the lid 10. The lock member 40 that rotates around the side close to the portion may be mixed.

また、例えば、前記実施形態の蓋体１０において、全てのロック部材４０が蓋体１０の長手方向の一方側に回動中心を有する構成としておき、搬送時に１対のレールの間に蓋体１０付きのコンテナ９０を通して、それらレールによってロック部材４０，４０を第２回動位置から第１回動位置に移動させてもよい。 Further, for example, in the lid 10 of the embodiment, all the lock members 40 are configured to have a rotation center on one side in the longitudinal direction of the lid 10, and the lid 10 is placed between a pair of rails during transportation. The lock members 40, 40 may be moved from the second rotation position to the first rotation position by the rails through the container 90 with the attachment.

（５）前記実施形態では、本発明の「係合部」としての係合突部４８が弾性係合片４７から側方に突出していたが、「係合部」が弾性係合片４７に陥没形成され、その係合相手の被係合部が段差面２４に突出形成されていてもよい。また、「係合部」が弾性係合片４７の上面又は下面に形成され、被係合部が下支持壁１５Ｗ又は上支持壁２０に形成されていてもよい。 (5) In the above embodiment, the engaging protrusion 48 as the "engaging portion" of the present invention protrudes laterally from the elastic engaging piece 47, but the "engaging portion" becomes the elastic engaging piece 47. It may be formed in a recessed state, and the engaged portion of the engaging partner may be formed so as to protrude from the stepped surface 24. Further, the "engaging portion" may be formed on the upper surface or the lower surface of the elastic engaging piece 47, and the engaged portion may be formed on the lower support wall 15W or the upper support wall 20.

１０，１０Ｖ，１０Ｗ蓋体
１１蓋本体部
１２嵌合部
１５Ｖ上支持壁
１５Ｗ下支持壁
１９貫通孔
２０上支持壁
２２回動係合溝
２５第１被係合部（被係合部）
２６第２被係合部（被係合部）
２７架橋支持壁
４０ロック部材
４１上部係合片
４２ロック突片
４３側部壁
４７弾性係合片
４８係合突部（係合部）
４９先端対向壁
４９Ａ進入ガイド部
５３傾斜ガイド部
９０コンテナ
９１上端フランジ
ＣＬ１中心 10, 10V, 10W Closure 11 Lid body 12 Fitting part 15V Upper support wall 15W Lower support wall 19 Through hole 20 Upper support wall 22 Rotating engagement groove 25 First engaged part (engaged part)
26 Second engaged part (engaged part)
27 Cross-linked support wall 40 Lock member 41 Upper engagement piece 42 Lock protrusion 43 Side wall 47 Elastic engagement piece 48 Engagement protrusion (engagement part)
49 Tip facing wall 49A Entry guide part 53 Inclined guide part 90 Container 91 Upper end flange CL1 Center

Claims

A lid body that overlaps the upper surface of the upper end flange of the container and closes the opening on the upper surface of the container.
A lock member that is supported by the outer edge of the lid body and rotates horizontally between the first rotation position and the second rotation position.
A side wall provided on the lock member and overlapping the side surface of the upper end flange at the first rotation position,
It has a lock projecting piece that projects like a cantilever from the side wall, overlaps the lower surface of the upper end flange at the first rotation position, and is located laterally of the upper end flange at the second rotation position. death,
The contour shape of the lock projecting piece as viewed from directly above includes a tip end extending parallel to the inner surface of the side wall at the position farthest from the side wall, and a rotation center of the lock member from the tip end side. On the side, an inclined side that is bent at an obtuse angle from the tip side to the side wall side and extends in a direction inclined with respect to the tip side is included.
A lid having an inclined guide portion formed by bending an outer edge portion of the lock protrusion along the inclined side diagonally downward .

An upper engaging piece that projects like a cantilever from the side wall, faces the lock protrusion from above, and can receive the upper end flange and the lid body portion between the lock protrusion and the lock protrusion.
An elastic engaging piece formed by separating a part of the upper engaging piece into a cantilever shape and extending along an arc around the center of rotation of the lock member.
An engaging portion formed on the side surface of the elastic engaging piece by protrusion or depression,
A first engaged portion provided on the lid main body portion and engaged with the engaging portion when the lock member is positioned at the first rotation position, and a first engaged portion.
The lid body according to claim 1, further comprising a second engaged portion that is provided on the lid main body portion and engages with the engaging portion when the lock member is located at the second rotation position .

An upper engaging piece that projects like a cantilever from the side wall, faces the lock protrusion from above, and can receive the upper end flange and the lid body portion between the lock protrusion and the lock protrusion.
An elastic engagement piece formed by separating a part of the upper engagement piece into a cantilever shape, extending along an arc around the center of rotation of the lock member, and having a tip portion on the side close to the side wall. When,
An engaging portion formed on the side surface of the elastic engaging piece by protrusion or depression,
A first engaged portion provided on the lid main body portion and engaged with the engaging portion when the lock member is positioned at the first rotation position, and a first engaged portion.
An upper support wall and a lower support wall which are provided as a part of the lid main body portion and face each other in the vertical direction and receive the upper engagement piece between them.
A tip facing wall formed on the upper engaging piece, located at the tip of the elastic engaging piece, and advancing and retreating between the upper support wall and the lower support wall.
The lid according to claim 1 or 2 , further comprising an approach guide portion formed on the tip facing wall and inclined downward as it approaches the elastic engagement piece .

A fitting portion is provided which hangs from the outer edge portion of the lid main body portion, fits on the outside of the upper end flange, and has a through hole through which the lock protrusion penetrates.
Claims 1 to 3 in which the tip of the inclined guide portion is located on or outside the surface extending from the inner surface of the fitting portion when the lock member is located at the second rotation position. The lid according to any one of the above.