JP6397693B2 - Enclosed container - Google Patents

Description

  The present invention relates to a sealed container, and in particular, includes a box-shaped container body whose upper surface is an open surface, and a lid that is mounted to cover the open surface of the container body, and is a synthetic resin that encloses contents inside The present invention relates to an enclosed container.

  Conventionally, for example, a container body that has an open top surface as a container for storing a wet sheet for cleaning a toilet or other various contained items in a sealed state so as not to be dried, and a container body There is known a synthetic resin-made sealed container having a lid that covers and covers the opening surface (see, for example, Patent Document 1 and Patent Document 2). In these sealed containers, an annular continuous fitting piece called an inner ring, which is provided on the lower surface of the lid, is overlapped so as to be in close contact with the inner peripheral surface of the upper end portion of the peripheral wall portion of the container body. Thus, the opening surface of the container main body is closed using the lid body in a state where the peripheral edge of the opening is sealed.

  In addition, these sealed containers have a container body and a lid formed by injection molding using a mold (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 10-101106 JP 2005-280713 A

  In these sealed containers, when the opening surface of the container body is closed by the lid body, the inner ring of the lid body is smoothly fitted into the opening surface, and the inner peripheral surface of the upper end portion of the peripheral wall portion of the container body is stable. It is preferable that they are superposed in the above state. For this reason, as shown in FIG. 9, an inclined guide surface 52 is formed on the inner peripheral surface of the upper end portion 51 a of the peripheral wall portion 51 of the container main body 50, and is inclined inwardly downward. It is considered that the inner ring is guided inward by bringing the tip of the ring 18 (see FIG. 4) into contact so that the inner ring of the lid can be smoothly fitted into the opening surface.

  However, since the container main body 50 is formed by injection molding, when the inclined guide surface 52 that guides the inner ring to the inside is formed on the inner peripheral surface of the upper end portion 51a of the peripheral wall portion 51 of the container main body 50, The present inventors have conceived that the following technical problems arise.

  That is, when the container body 50 is formed by injection molding, the container body 50 molded using a mold is removed from the cavity part (fixed part) mold (not shown) together with the core part mold 53. After that, when the container main body 50 is removed from the core mold 53, the flange plate portion 56 of the peripheral reinforcing base 55 is integrally formed so as to protrude outward from the upper end portion 51a of the peripheral wall portion 51 of the container main body 50. The stripper mold 54 pressed down on the upper surface of the container is pressed downward to form the flange plate portion 56 by applying a pressing force from the stripper mold 54 to the flange plate portion 56. The container body 50 is peeled off from the mold 53 of the core portion and is removed downward.

  For this reason, when the inclined guide surface 52 is formed on the inner peripheral surface of the upper end portion 51a of the peripheral wall portion 51 of the container body 50, the connecting corner portion between the upper end portion 51a of the peripheral wall portion 51 and the flange plate portion 56 is chamfered. As a result, the connection angle portion is deformed by the moment force generated when the pressing force is applied to the flange plate portion 56, and the upper end portion 51a of the peripheral wall portion 51 and the flange plate portion 56 are thereby deformed. It turned out that it becomes easy to reduce the sealing performance at the time of obstruct | occluding the opening surface of the container main body 50 with a cover body by deform | transforming so that it may incline.

  This invention makes it a subject to suppress the deformation | transformation of a container main body produced when removing a container main body from the metal mold | die of a core part with a stripper metal mold | die, and to improve the sealing performance of an enclosure container.

  The present invention includes a box-shaped container main body having an opening surface on the top surface including a bottom wall portion and a peripheral wall portion, and a lid body that covers and attaches the opening surface of the container main body. A peripheral reinforcing table including a flange plate portion that is integrally formed with the upper end portion of the peripheral wall portion so as to protrude outward from the upper end portion. It is provided continuously, and projects upward from the upper surface of the flange plate portion, and guides the inner ring provided on the lower surface of the lid body so as to overlap the inner peripheral surface of the upper end portion of the peripheral wall portion. The above object is achieved by providing a sealed container provided with an invitation rib having an inner inclined guide surface.

  According to the sealed container of the present invention, it is possible to suppress the deformation of the container main body, which occurs when the container main body is removed from the core mold by the stripper mold, and to improve the sealing performance of the sealed container. In particular, when removing the container body from the core mold by the stripper mold, the inner ring of the lid that closes the opening surface of the container body guides the inner ring to smoothly fit into the opening surface. The container body can be easily provided without deforming the container body.

1 is a perspective view of a sealed container according to a preferred embodiment of the present invention. 1 is a front view of an enclosure according to a preferred embodiment of the present invention. It is sectional drawing along AA of FIG. It is the B section enlarged view of FIG. It is sectional drawing explaining the state from which the container main body formed by injection molding was removed from the metal mold | die of a cavity part (fixed part) with the metal mold | die of a core part. 5A is an enlarged view of a C part in FIG. 5, and FIG. 5B is an enlarged view of a C part illustrating a state in which a pressing force is applied to the flange plate part from the stripper plate and the container body is removed downward from the mold of the core part. It is. It is an expanded sectional view which illustrates other forms of an invitation rib. It is explanatory drawing of the invitation taper part provided in the lower part of the inner side upper end corner part of the main body side rotation engagement part of a main body side connection part, and the lid side rotation engagement part of a cover body side connection part. It is a schematic sectional drawing explaining the inclination guide surface formed in the upper end part internal peripheral surface of the surrounding wall part of a container main body with the metal mold | die and stripper plate of a core part.

  A sealed container 10 according to a preferred embodiment of the present invention shown in FIG. 1 is used as a container, for example, in a state where a plurality of wet sheets for toilet cleaning are stacked and installed on a floor surface of a toilet. It is done. The sealed container 10 of the present embodiment includes a box-shaped container body 11 and a lid body 12 that is mounted so as to cover the opening surface 11 a on the upper surface of the container body 11, and the lid body 12 includes a hinge portion 13. A hinge lid is rotatably connected to the upper end portion of the container body 11 through the hinge lid. As a result, the enclosure 10 of the present embodiment is an enclosure 10 with a hinge lid. Moreover, the enclosure container 10 of this embodiment is provided with a guide rib 17 on the flange plate portion 16a of the peripheral reinforcing base 16, which is integrally formed by projecting outward from the upper end portion 15a of the peripheral wall portion 15 of the container body 11. Yes. Thus, when the opening surface 11a of the container body 11 is closed by the lid body 12, the inclined guide surface 17a for guiding the inner ring 18 of the lid body 12 to the inner surface of the upper end portion 15a of the peripheral wall portion 15 of the container body 11 is provided. The container body 11 can be easily formed without being deformed at the time of injection molding using the molds 30 and 31 (see FIG. 5).

  The sealed container 10 according to the present embodiment is mounted so as to cover the box-shaped container main body 11 having the upper surface including the bottom wall portion 14 and the peripheral wall portion 15 as the opening surface 11a, and the opening surface 11a of the container main body 11. And a lid made of a synthetic resin that encloses the contents inside, and as shown in FIGS. 3 and 4, the upper end portion 15a of the peripheral wall portion 15 is connected to the upper end portion. A peripheral reinforcement base 16 including a flange plate portion 16a that is integrally formed so as to project outward from 15a is provided continuously in the circumferential direction. An inner inclined guide surface 17a that projects upward from the upper surface of the flange plate portion 16a and guides the inner ring 18 provided on the lower surface of the lid body 12 so as to overlap the inner peripheral surface of the upper end portion 15a of the peripheral wall portion 15. The guide rib 17 is provided with at least an inner edge portion of the continuous base end portion 17b with the flange plate portion 16a, and a portion directly above the thick width region t of the upper end portion 15a of the peripheral wall portion 15. (See FIG. 4).

  Further, in the present embodiment, the container body 11 and the lid body 12 are horizontally long with four corners chamfered in an arc shape, for example, a width of about 140 to 180 mm and a length of about 100 to 130 mm. A substantially rectangular planar shape.

  In this embodiment, the container body 11 is an injection-molded product made of a plastic material such as polypropylene (PP) or high-density polyethylene (HDPE) made of synthetic resin, and includes a bottom wall portion 14 and four peripheral wall portions 15. And formed. Moreover, the container main body 11 is formed as a substantially hexahedron-shaped box with a deep bottom, for example, having a depth of about 40 to 70 mm, and having a substantially rectangular planar shape whose upper surface is the opening surface 11a. A stepped portion 15 b is provided on the upper end portion 15 a of the peripheral wall portion 15 of the container main body 11 at a position that is lowered by several mm from the upper end of the peripheral wall portion 15. By the step portion 15b, the upper end portion 15a of the peripheral wall portion 15 is provided in a state of slightly protruding outward from the lower portion thereof.

  On the inner side of the upper end portion 15a of the peripheral wall portion 15 of the container main body 11, when the opening surface 11a of the container main body 11 is closed by the lid body 12, it projects downward from the lower surface of the lid body 12 and continues in a substantially rectangular shape. The provided inner ring 18 abuts the tip of the inner ring 18 on the step portion 15b, and preferably the inner peripheral surface of the inner ring 18 in close contact with the inner peripheral surface of the upper end portion 15a of the peripheral wall portion 15. It is inserted so as to overlap. As a result, the opening periphery of the opening surface 11a of the container body 11 is sealed by the inner ring 18, and it is possible to effectively prevent the wet sheet, which is a container enclosed therein, from drying out. Yes.

  In the present embodiment, the peripheral reinforcing base is bent at the upper end portion 15a of the peripheral wall portion 15 of the container body 11 so as to project outward so as to form a U-shaped cross section including the upper end portion 15a. 16 is continuously formed over the entire circumference of the peripheral wall portion 15. The peripheral reinforcing table 16 is provided to project outward from the upper end of the upper end portion 15a of the peripheral wall portion 15 of the container body 11 in parallel or substantially parallel to the bottom wall portion 14, and has a width of, for example, about 2 to 8 mm. A plate portion 16a and a skirt wall portion 16b formed by bending downward from the outer peripheral edge portion of the flange plate portion 16a vertically or substantially vertically, for example, with a width of about 3 to 5 mm.

  And in this embodiment, as shown in FIG.1, FIG3 and FIG.4, it protrudes upwards from the upper surface of the flange plate part 16a projected outside the upper end part 15a of the surrounding wall part 15 of the container main body 11, and invites it. Ribs 17 are provided. The invitation rib 17 is formed integrally with the flange plate portion 16a, protrudes upward at a height of, for example, about 0.8 to 1.5 mm from the upper surface of the flange plate portion 16a, and is cut at a surface orthogonal to the circumferential direction. When formed, it is formed to have a substantially triangular cross-sectional shape. Thereby, the inner surface of the substantially triangular cross-sectional shape of the invitation rib 17 guides the inner ring 18 of the lid 12 so as to be superimposed on the inner peripheral surface of the upper end portion 15 a of the peripheral wall portion 15. An inner inclined guide surface 17a that is inclined in the direction is formed.

  Further, in the present embodiment, the invitation rib 17 is provided so as to be shifted closer to the inner side than the central portion in the width direction of the flange plate portion 16a (see FIG. 4). As a result, the hem portion adjacent to the flange plate portion 16a of the inner inclined guide surface 17a, which is the inner edge portion of the continuous base end portion 17b with the flange plate portion 16a of the invitation rib 17, is the meat of the upper end portion 15a of the peripheral wall portion 15. It is arranged at a portion immediately above the thick width region t. In the flange plate portion 16a, the region outside the guide rib 17 that is provided to be shifted to the inside is an outer abutment surface that can abut a tip of a lid-side skirt wall 12b of the lid 12 described later. 16c is formed.

  Further, in the present embodiment, the invitation rib 17 includes the first divided portion 20a and the second divided portion in the circumferential direction of the flange plate portion 16a surrounding the periphery of the opening surface 11a of the container body 11 having a horizontally long substantially rectangular planar shape. In a state where the portion 20a is interposed, they are continuously arranged (see FIG. 1). That is, the guiding rib 17 is formed continuously from one long side portion of the flange plate portion 16a where the hinge portion 13 is provided to approximately ½ of the short side portion on both sides. In the short side portion, the first dividing portion 20a is interposed, and further, by extending each from the short side portion on both sides to approximately four half regions of the other long side portion where the hinge portion 13 is not provided, the other side In the central region of the long side portion, the second dividing portion 20b is interposed.

  Since the first dividing portion 20a not provided with the guiding rib 17 is formed at the center of the short side portions on both sides of the flange plate portion 16a, the short portion that becomes the end point of the circumference of the meat when the container body 11 is injection molded. It becomes possible to effectively avoid the occurrence of chipping in the middle region of the side portion (since the resin is injected from the central portion of the bottom wall portion 14 of the container body 11, the shortest distance from the injection portion) There is a tendency for chipping on the sides.) The opening part 11a of the container main body 11 is closed by the lid body 12 by forming the second dividing part 20b in the central region of the other long side part where the hinge part 13 of the flange plate part 16a is not provided. In this case, it is possible to effectively avoid the interference between the lid 12 and the invitation rib 17.

  In addition, the invitation rib 17 can also be provided continuously over the entire circumference in the circumferential direction of the flange plate part 16a surrounding the periphery of the opening surface 11a without providing a dividing part. The invitation rib 17 appropriately selects a predetermined portion that is effective for guiding the inner ring 18 to the inner surface of the peripheral wall portion 15 by the inclined guide surface 17a in the flange plate portion 16a surrounding the opening surface 11a. It can also be provided only at selected predetermined locations. Also by these, the invitation rib 17 is provided by disposing at least the inner edge portion of the lower end portion 17b continuous with the flange plate portion 16a in the portion directly above the thick width region t of the upper end portion 15a of the peripheral wall portion 15. As a result, the following effects can be obtained.

  In the present embodiment, as shown in FIG. 1, the main body side coupling of the hinge portion 13 is projected to the outside of the peripheral reinforcing base 16 at the center portion of one long side portion of the substantially rectangular planar shape of the container body 11. A pair of main body side rotation engaging portions 21 constituting the portion 13a is provided. The pair of main body side rotation engaging portions 21 are preferably provided at intervals in a state where pin holes are formed and the hole side rotation opposing surfaces are arranged to face each other. A pair of plate rib-like lid-side rotation engaging portions 22 constituting the lid-body-side coupling portion 13b of the hinge portion 13 are fitted in the space between the pair of body-side rotation engaging portions 21 of the body-side coupling portion 13a. It is attached so that The pair of plate-like lid-side rotation engaging portions 22 are connected by a band plate-like connection reinforcing plate portion 23. In addition, the engaging claws formed on the tongue-shaped engaging wall 19 of the lid 12 are engaged with the central portion of the other long side portion of the peripheral reinforcing base 16 where the main body side connecting portion 13a is not provided. The engaging claw protrusion 16d is provided so as to protrude outward from the skirt wall portion 16b.

  The lid 12 is an injection-molded product made of a plastic material such as polypropylene (PP) or high-density polyethylene (HDPE) made of synthetic resin, like the container body 11. The lid body 12 has a substantially rectangular shape with a horizontally long shape, for example, having a horizontal width of about 140 to 180 mm and a vertical width of about 100 to 130 mm. It is formed so as to have a planar shape. The lid 12 includes an upper surface plate 12a and a lid-side skirt wall 12b formed by bending the peripheral edge portion of the upper surface plate 12a downward into an L-shaped cross section. Further, an inner ring 18 projects downward from the lower surface of the peripheral edge portion of the upper surface plate 12a of the lid body 12 with an interval between the lid side skirt wall 12b and the lid side skirt wall 12b. It is continuously provided in a rectangle.

  When the opening 11 a on the upper surface of the container body 11 is closed by the lid 12, as described above, the inner ring 18 contacts the stepped portion 15 b of the upper end portion 15 a of the peripheral wall portion 15 of the container body 11. In addition, the outer peripheral surface of the peripheral wall portion 15 is closely fitted to the inner peripheral surface of the upper end portion 15a of the peripheral wall portion 15 and is fitted so as to overlap the inner peripheral surface (see FIGS. 3 and 4). Further, the lid-side skirt wall 12b has its tip excluding the tongue-shaped engaging wall 19 abutted against the outer abutting surface 16c in a region outside the guiding rib 17 of the flange plate portion 16a of the container body 11. Make contact. By these, the opening peripheral part of the opening surface 11a is sealed in a stable state, and the contents can be enclosed inside the container body 11.

  Further, in the present embodiment, the lid body side connecting portion 13b of the hinge portion 13 is configured to project outward from the center portion of the lid side skirt wall 12b along one long side portion of the substantially rectangular planar shape of the upper surface plate 12a. A pair of lid-side rotation engaging portions 22 are provided so as to protrude into a plate rib shape, for example. The pair of plate-rib-like lid-side rotation engagement portions 22 are provided in the container body 11 and are substantially the same as the interval between the pair of body-side rotation engagement portions 21 formed with pin holes, for example. They are provided in a state where they are connected to each other by the strip plate-like connecting / reinforcing play portion 23 at a narrower interval. The pair of plate-rib-like lid-side rotation engaging portions 22 are provided, for example, in a state where the pin-side rotation opposing surfaces from which the engagement pins protrude are arranged symmetrically in the back direction.

  In the present embodiment, the upper surface plate 12a of the plate-like lid body 12 is preferably formed in a shape in which the upper surface gently rises toward the central portion, as shown in FIG. In addition, only a negligible level difference or gentle unevenness is formed. As a result, the entire upper surface of the upper surface plate 12a is a substantially smoothly continuous surface that can easily wipe off deposits by a continuous wiping operation using a wet sheet or the like.

  Furthermore, in the present embodiment, the lid-side skirt wall 12b along the other long side portion of the top plate 12a having a substantially rectangular planar shape and not provided with the lid-side coupling portion 13b is excluded from the corner portions on both sides. Further, a tongue-like engagement wall 19 extending downward in an arc shape is provided over substantially the entire area (see FIGS. 2 and 3). Engaging claws are provided on the inner surface of the lower part of the central portion of the tongue-shaped engaging wall 19. The engaging claw is engaged with an engaging claw protrusion 16d (see FIG. 1) provided to protrude from the skirt wall portion 16b of the peripheral reinforcing base 16 of the container body 11, so that the opening surface 11a of the container body 11 is made. The state sealed by the lid 12 can be stably held.

  The container body 11 and the lid body 12 constituting the sealed container 10 are preferably formed separately, and then, for example, in a state where the lid body 12 is overlapped so as to cover the opening surface 11a of the container body 11, The pair of lid-side rotation engaging portions 22 of the lid-side coupling portion 13b of the lid body 12 is forcedly pushed from above the main-body-side coupling portion 13a into the space between the pair of body-side rotation engaging portions 21. And push in. Thus, the hinge portion 13 can be formed by engaging the engagement pin provided in the lid-side rotation engagement portion 22 with the pin hole provided in the main body-side rotation engagement portion 21. Further, by this, the container body 11 and the lid body 12 can be rotatably connected and integrated via the hinge portion 13 to form the sealed container 10 with a hinge lid. The inside of the box-shaped container body 11 of the formed enclosure container 10 can be sealed in a state where, for example, a plurality of wet sheets for toilet cleaning are stacked, and covers the opening surface 11a on the upper surface of the container body 11 The wet sheet can be taken out and used while opening and closing the body 12.

  And according to the enclosure 10 of this embodiment provided with the above-mentioned structure, since the invitation rib 17 protruded upward from the upper surface of the flange plate part 16a, it is removed from the core part mold 30 by the stripper mold 31. When removing the container main body 11, it is possible to make it difficult to deform the container main body 11, and it is possible to easily fit the lid 12 to the container main body 11.

  That is, according to the present embodiment, the inner inclined guide surface 17a that guides the inner ring 18 provided with the lid 12 so as to overlap the inner peripheral surface of the upper end portion 15a of the peripheral wall portion 15 of the container body 11 is provided. The invitation rib 17 provided is provided so as to protrude upward from the upper surface of the flange plate portion 16a formed to protrude outward from the upper end portion 15a of the peripheral wall portion 15, and the invitation rib 17 is provided on the flange plate portion 16a. At least the inner edge part of the continuous base end part 17b is provided so as to be arranged immediately above the thick width region t of the upper end part 15a of the peripheral wall part 15.

  Therefore, according to the present embodiment, as shown in FIG. 5 and FIGS. 6A and 6B, the injection molded container body 11 is molded together with the mold 30 of the core part and the mold of the cavity part (fixed part). After removing from the mold (not shown), the stripper mold 31 pressed against the upper surface of the flange plate portion 16a protruding from the upper end portion 15a of the peripheral wall portion 15 of the container body 11 is pushed down to When removing the container body 11 from the mold 30 of the part, the pressing force applied to the flange plate part 16a from the stripper mold 31 is passed through the continuous base end part 17b with the flange plate part 16a of the invitation rib 17 It can be applied as a force toward the thick width region t of the upper end portion 15a of the peripheral wall portion 15 (see FIGS. 6A and 6B). Thereby, according to this embodiment, when the container main body 11 is removed from the mold 30 of the core part by pushing the stripper mold 31 downward, the flange plate part 16a and the upper end part 15a of the peripheral wall part 15 Since it is possible to effectively suppress the moment force generated at the connection angle portion with the flange plate portion 16a, the upper end portion 15a of the peripheral wall portion 15 and the flange plate portion 16a are distorted and deformed to be inclined, It is possible to effectively avoid the deterioration of the sealing performance when the connecting corner portions are deformed and the opening surface 11a of the container body 11 is closed by the lid body 12.

  In addition, according to the present embodiment, the stripper mold 31 that pushes down the flange plate portion 16a when removing the container body 11 has a shape corresponding to the protruding shape of the invitation rib 17 protruding from the upper surface of the flange plate portion 16a. A concave portion 31a is formed, and the flange plate portion 16a is pushed down in a state where the invitation rib 17 is fitted into the molding concave portion 31a. As a result, the container main body 11 is removed from the core mold 30 in a state where the invitation rib 17b is fitted in the molding recess 31a corresponding to the shape of the invitation rib 17 of the stripper mold 31 in all directions. Since it is removed, the shape of the stripper mold 31 suppresses the deformation of the container body 11 in the lateral direction as a whole. In addition, the pressing force applied from the stripper mold 31 to the flange plate portion 16a can be applied in a more stable state as a force directed toward the thickness width region t of the upper end portion 15a of the peripheral wall portion 15. Further, it is possible to more effectively avoid the deformation of the upper end portion 15a of the peripheral wall portion 15, the flange plate portion 16a, and the connecting corner portions thereof.

  Accordingly, according to the present embodiment, when the container main body 11 is removed from the mold 30 of the core portion by the stripper mold 31, the inclined guide surface 17 a by the invitation rib 17 protruding from the upper surface of the flange plate portion 16 a is used. It is possible to easily provide the container body 11 without deforming the container 11.

  Moreover, according to this embodiment, the invitation rib 17 provided with the inclined guide surface 17a on the inner side is provided so as to protrude from the upper surface of the flange plate portion 16a projecting outward from the upper end portion 15a of the peripheral wall portion 15 of the container body 11. Therefore, for example, as described above, a pair of main body side rotational engagements are performed from above the main body side connecting portion 13a of the container main body 11 in a state where the opening 12a of the main body 11 is covered and the lid body 12 is overlapped. The pair of lid-side rotation engaging portions 22 of the lid-side connecting portion 13b of the lid 12 is pushed into the space between the portions 21 so as to be pushed (driving), whereby the container body 11 and the lid 12 are pushed. When the lid body 12 is displaced with respect to the opening surface 11a of the container body 11, the tip of the inner ring 18 remains on the upper surface of the flange plate portion 16a. Without Rukoto, via the inclined guide surface 17a of the invitation ribs 17, while inducing the tip of the inner ring 18 on the inside of the upper end portion 15a of the peripheral wall portion 15, it is possible to push the lid 12. As a result, when the container body 11 and the lid body 12 are integrated, the inner ring 18 is damaged because the tip of the inner ring 18 remains on the upper surface of the flange plate portion 16a. It can be effectively avoided.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the container main body and the lid body do not necessarily have a substantially rectangular planar shape, and may have various other planar shapes such as a substantially circular shape, a substantially oval shape, and a substantially oval shape. In addition, each surface of the container main body and the lid may have a three-dimensional shape such as a dome shape or a conical shape instead of a planar shape. The lid body is not necessarily a hinge lid that is rotatably connected to the upper end portion of the container body via the hinge portion, and may be a lid body that is detachably fitted into the opening surface of the container body. In addition to the triangular cross-sectional shape, the invitation rib may have a cross-sectional shape such as a substantially trapezoidal shape or a semi-circular shape whose inside is inclined as an inclined guide surface. For example, as shown in FIG. 7, the invitation rib may be an invitation rib 17 'with a hollowed lower portion. As a result, the weight of the container body 11 can be reduced. In addition, the invitation rib may be provided over the entire circumferential direction of the flange plate portion or may be provided in a part of the circumferential direction. When provided in a part, it is preferably provided in three or four directions when viewed from the inside of the container.

  Further, as shown in FIG. 8, the inner upper end corner portion of the main body side rotation engaging portion 21 constituting the main body side coupling portion 13a and the lower portion of the lid side rotation engaging portion 22 constituting the lid body side coupling portion 13b. Invitation taper portions 21a and 21b may be provided. Accordingly, the lid of the lid body 12 is placed on the space between the pair of body-side rotation engaging portions 21 from above the body-side coupling portion 13a in a state where the lid body is overlapped so as to cover the opening surface of the container body. When the pair of lid-side rotation engaging portions 22 of the body-side connecting portion 13b are pushed in so as to be forced, they are guided so that they can be pushed smoothly, and the body-side rotation engaging portion 21 and the lid-side rotation engaging portion It is possible to effectively avoid the portion 22 from being damaged.

DESCRIPTION OF SYMBOLS 10 Enclosed container 11 Container main body 12 Cover body 12a Top plate 12b Cover side skirt wall 13 Hinge part 14 Bottom wall part 15 of container main body Peripheral wall part 15a of container main body 15a Upper end part 15b Step part 16 Peripheral reinforcement stand 16a Flange plate part 16b Skirt wall 16c Outer abutment surface 16d Engaging claw protrusion 17 Guiding rib 17a Inner inclined guide surface 17b Continuous proximal end 18 Inner ring 19 Tongue engaging wall 20a First dividing portion 20b Second dividing portion 21 Main body side rotation engaging portion 21a Hole-side rotation facing surface 22 Lid-side rotation engaging portion 22a Pin-side rotation facing surface 23 Band plate-like connection reinforcing play portion 30 Core die 31 Stripper die 31a Molding recess t Thick width region

Claims (6)

A box-shaped container main body having an open top surface including a bottom wall portion and a peripheral wall portion, and a lid mounted to cover the opening surface of the container main body, and the contents inside An encapsulating container made of synthetic resin,
A peripheral reinforcement base including a flange plate portion integrally formed by projecting outward from the upper end portion is provided at the upper end portion of the peripheral wall portion continuously in the circumferential direction.
Invitation provided with an inner inclined guide surface that projects upward from the upper surface of the flange plate portion and guides an inner ring provided on the lower surface of the lid so as to overlap the inner peripheral surface of the upper end portion of the peripheral wall portion. Enclosed container with ribs.   The said invitation rib is provided so that the at least inner edge part of the continuous base end part with the said flange plate part may be arrange | positioned in the part directly above the thickness width area | region of the upper end part of the said surrounding wall part. Enclosed container.   The sealed container according to claim 1, wherein the invitation rib has a substantially triangular cross-sectional shape in a cross section perpendicular to the circumferential direction.   The enclosure container according to claim 1, wherein the container body and the lid body have a substantially rectangular planar shape.   The sealed container according to claim 4, wherein the invitation rib is provided with a split portion interposed in a short side portion of the substantially rectangular planar shape.   The enclosure according to any one of claims 1 to 5, wherein the lid is a hinge lid that is rotatably connected to an upper end portion of the container body via a hinge portion.

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