JP2013039965A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container having a structure the cover body of which fits the inner side of a container body, wherein the container includes the structure in which both of them can be more simply and reliably sealed and fixed.SOLUTION: The container 1 includes a cover body 30, which includes a cover surface part 36 and a cover edge part 32 surrounding an outer periphery 31, and a container body 10. An upper surface 11 of the body part is open to form an open edge part 12. The container body includes an opening peripheral wall part 17 on the periphery thereof. The cover body is latched by the container body part side when the cover edge part of the cover body fits the inner side of the opening peripheral wall part of the container body. A lower end of the opening peripheral wall part of the container body includes a cover receiving step part 18. The opening peripheral wall part includes a cover latching part 20 having a reversed part 21, which is a V-shaped piece 22 formed to be bent to the inner side of the container body. When the cover edge part of the cover body is housed in a cover body housing part 25, which is formed by the opening peripheral wall part and the cover receiving step part, the cover edge part is brought into contact with the reversed part and is latched by the opening peripheral wall part side.

Description

  The present invention relates to a container, and more particularly to a container that reinforces the engagement force between a lid and a container body in a container in which the lid fits inside the container body.

  For example, in packaging containers that contain food such as sugar beets and lunch boxes, and other processed foods, a container in which a lid is superimposed on a container body made of a synthetic resin sheet is generally used (for example, patents). References 1, 2 etc.). In the container of the form exemplified in Patent Documents, the outer peripheral portion of the lid is formed larger than the periphery of the container body. The edge part (flange part, skirt part) on the cover body side covers from the outside of the edge part (flange part) formed in the opening of the container body.

  In order to prevent separation of the container body and the lid in the container of the configuration and to suppress the drying and leakage of the contents as much as possible, there is a method of completely covering both sides with a wrap film after the lid is superimposed on the container body. It is used a lot. In particular, it is often found in lunch boxes sold at convenience stores. Since it is later covered with a wrap film, it is more resistant to impact than the sealing of the container body and lid using conventional tapes, and is highly convenient during handling.

  In the case of a container that is sealed by covering the container body with the lid, the edge on the lid body often hangs downward from the edge of the container body. For this reason, the space by the edge part by the side of a cover body inevitably arises around the container outer side. In addition, lunch boxes sold at convenience stores and the like are heated by the microwave oven together with the container with the lid body on the container body. Naturally, water vapor is generated from the food inside. In a conventional container, the lid body covers and seals the container body, so that the generated water vapor may escape through the edge of the lid body looking for an escape path. If it did so, the point which spoiled the appearance by the liquid leakage of the content accompanying the flow to water vapor was pointed out.

  In order to improve these points, a sealing structure in which the lid is accommodated inside the edge formed in the opening of the container body has been proposed. According to this structure, water vapor generated from the food is blown out from the gap between the edge around the lid and the edge of the container body opening. That is, since water vapor escapes at the shortest distance, the point of damaging the appearance of the container is improved.

  However, in the case of a structure in which the lid is fitted inside the container main body, the lid is exclusively fitted on the container main body side, so that the fixing of both may not be sufficient. Therefore, it is necessary to fasten both with a fixing tape, a sealing seal, other films, etc., and it takes time to seal the lid and the container body. From this, in a container having a structure in which the lid is fitted inside the container main body, a structure capable of sealing and fixing both more easily and reliably has been desired.

JP-A-10-218213 JP-A-11-79211

  The present invention has been made in view of the above points, and provides a container having a structure in which a lid can be sealed and fixed more easily and reliably in a container having a structure in which a lid fits inside the container body. It is.

  That is, the invention of claim 1 includes a lid having a lid surface portion and a lid edge portion surrounding the outer periphery of the lid surface portion, an upper surface opening to form an opening edge portion, and an opening peripheral wall portion at the opening edge portion. A container body, and the lid edge portion of the lid body is fitted inside the opening peripheral wall portion of the container body, and the lid body is locked to the container body side. A lid receiving step portion is provided at a lower end of the opening peripheral wall portion of the container body, and a lid engaging portion having a barbed portion is provided on the opening peripheral wall portion, and the lid edge portion of the lid body is the opening peripheral wall portion And the lid edge portion is brought into contact with the barb portion and is locked to the opening peripheral wall portion side when being accommodated in the lid body accommodating portion formed by the lid receiving step portion. .

  The invention according to claim 2 relates to the container according to claim 1, wherein the barb portion is a V-shaped piece formed by being bent inward of the container body.

  The invention according to claim 3 is the container according to claim 1 or 2, wherein the lid engaging portion is provided with an inner protrusion that protrudes inward of the container body, and the barb is formed on the inner protrusion. Related.

  According to a fourth aspect of the present invention, the lid edge portion and the opening peripheral wall portion form a polygonal shape in plan view, and the lid locking portion is located at a corner of the polygonal opening peripheral wall portion. It concerns on the container of any one of 1-3.

  The invention according to claim 5 relates to the container according to any one of claims 1 to 3, wherein the lid locking portion is located at a side portion of the opening peripheral wall portion.

  Invention of Claim 6 concerns on the container of any one of Claim 1 thru | or 5 in which the said container main body is used for packaging of a lunch box or a side dish.

  According to the container of the first aspect of the present invention, a lid provided with a lid surface portion and a lid edge portion surrounding the outer periphery of the lid surface portion, an upper surface is opened to form an opening edge portion, and an opening peripheral wall is formed on the opening edge portion. A container body in which the lid edge portion of the lid body is fitted inside the opening peripheral wall portion of the container body, and the lid body is locked to the container body side. A lid receiving step portion is provided at the lower end of the opening peripheral wall portion of the container body, and a lid locking portion having a barbed portion is provided on the opening peripheral wall portion, and the lid edge portion of the lid body is the opening. Since the lid edge is brought into contact with the barb and is locked to the opening circumferential wall when it is accommodated in the lid body formed by the peripheral wall and the lid receiving step, the structure is extremely simple. This makes it possible to realize a container that can be easily and reliably fitted and fixed to the container body. .

  According to the container of the second aspect of the invention, in the invention of the first aspect, since the barb portion is a V-shaped piece formed by bending inward of the container main body, the processing for forming the barb portion is performed. Is relatively easy.

  According to the container of the invention of claim 3, in the invention of claim 1 or 2, the lid locking portion is provided with an inner protrusion that protrudes to the inside of the container main body, and the barb is disposed on the inner protrusion. Thus, the gap between the opening peripheral wall portion of the container main body and the lid edge portion of the lid body can be partially narrowed, and the barb portion can be brought closer to the lid edge portion side. Moreover, it can be used for confirmation of the fit when the lid is fitted to the container body.

  According to the container of the invention of claim 4, in the invention of any one of claims 1 to 3, the lid edge portion and the opening peripheral wall portion form a polygonal shape in plan view, and the lid locking portion is the multi-piece. Since it is located in the corner | angular part of a square-shaped opening surrounding wall part, the load required for latching of a cover body can be equalized.

  According to the container of the invention of claim 5, in the invention of any one of claims 1 to 3, since the lid locking portion is located at the side of the opening peripheral wall, the locking at the side of the container The performance can be enhanced and the fitting between the container body and the lid can be maintained.

  According to the container according to the invention of claim 6, in the invention of any one of claims 1 to 5, since the container body is used for packaging a lunch box or a side dish, the food that has passed through the lid that may have occurred in the previous lid Problems such as liquid leakage of contents can be made difficult to occur.

It is a top view which isolate | separates and shows the cover body and container main body of the container which concern on 1st Example of this invention. It is a side view which shows the isolation | separation state and joining state of a container. It is a partial enlarged plan view of a container body. It is a partial notch perspective view of a container main body. It is a partial enlarged plan view of the joining state of the container lid and the container body. It is a partial enlarged plan view of the container concerning the 2nd example. It is a partial expanded longitudinal cross-sectional view of the separation state of a cover body and a container main body. It is a 1st partial expansion longitudinal cross-sectional view of the latching state of a cover body and a container main body. It is a 2nd partial expanded longitudinal cross-sectional view of the latching state of a cover body and a container main body. It is a 3rd partial expanded longitudinal cross-sectional view of the latching state of a cover body and a container main body. It is a partial expanded longitudinal cross-sectional view of the container which concerns on 3rd Example. It is a perspective view of the container which concerns on 4th Example.

  The container 1 of this embodiment as defined in each invention including claim 1 includes a container main body 10 and a container body 10 as can be understood from the whole plan view of the separated state of FIG. 1 and the side view of the separated and joined state of FIG. A lid body 30 is provided on the upper portion of the container body 10 to be fitted to the inside of the container body 10. Both the container body 10 and the lid 30 shown in the figure are polygonal in plan view. The polygonal shape includes not only a form in which corner portions are joined by side parts but also a form in which joint parts of the side parts are curved and chamfered.

  The container body 10 and the lid body 30 of this embodiment are made of a thermoplastic resin sheet (synthetic resin sheet) such as polyethylene, polypropylene, polystyrene, and polyethylene terephthalate, and further a biodegradable thermoplastic resin sheet such as polylactic acid. Formed from. The synthetic resin sheet is formed into various shapes such as illustrated by vacuum forming. Although the thickness of the synthetic resin sheet is appropriate, it is approximately 1 mm or less. In the combination of the container main body and the lid, the raw resin of the synthetic resin sheet may be the same or different. The type of resin is appropriately selected depending on the application, contents, and packaging target. Note that either or both of the container main body 10 and the lid 30 can be manufactured from paper or other flexible materials.

  As understood from FIGS. 1 and 2, in the container body 10, the upper surface 11 is opened, and the opening edge portion 12 is formed in a circumferential shape in the opening portion 11 e of the upper surface 11. The inside of the container main body of the opening edge portion 12 becomes an opening peripheral wall portion 17, and a lid receiving step portion 18 is provided at the lower end of the opening peripheral wall portion 17. The opening peripheral wall portion 17 and the lid receiving step portion 18 are formed on the entire opening portion 11 e of the upper surface 11 corresponding to the opening edge portion 12. The opening peripheral wall portion 17 and the lid receiving step portion 18 constitute a lid body accommodating portion 25 that receives the lid body 30.

  The opening edge portion 12 is provided with a container collar portion 13 that becomes a horizontal portion. Further, an outer peripheral wall portion 19 is provided outside the container collar portion 13. The opening edge 12 of the container body 10 has a structure in which an opening peripheral wall 17, a container flange 13, and an outer peripheral wall 19 are provided (see FIG. 4 and the like). Therefore, the structural strength against bending deformation is increased in the opening portion 11e of the upper surface 11 of the container body 10.

  The container body 10 has a container wall 15 on the side and a container bottom 16 on the bottom, and is open on only one side. The container body 14 has a container body interior 14 formed immediately below the upper surface 11 of the container body 10. In the drawing, the container body 10 is a space inside a single container body 14. Although the packaging object of the container main body 10 is not particularly limited, it is mainly used in the food packaging field. In particular, as defined in the invention of claim 6, the container body 10 is used for packaging lunch boxes or side dishes. When the container 1 of the present invention is used for lunch box or side dish packaging, since the lid is in a sealed form that fits inside the container body, the liquid of the food content that has passed through the lid that may have occurred in the previous lid Problems such as leakage can be made difficult to occur. In addition, the partition part (not shown) which divides the inside of the container main body 10 into two or more according to a packaging object as needed is provided in a container wall part and a container bottom part. In this way, it is possible to prevent the foods from mixing with each other.

  Since the opening edge 12 of the container body 10 of the illustrated embodiment has a rectangular shape with a slight bulge in the side portion in a plan view of FIG. 1, these combinations having the container corner 10c and the container side 10s are used. is there. Of course, the shape of the container is not limited to an expanded shape that spreads from the bottom side toward the opening side as shown in the figure, and it is appropriate from the viewpoint of the packaging object and the design to reduce the overall height of the container or to make it into a cylindrical shape. In addition, the opening edge of the container body is not limited to the illustrated rectangular shape, but may be a triangle, a pentagon, or a polygon such as a star with a corner. In the figure, reference numeral 20 is a lid locking portion, 21 is a barbed portion, 22 is a V-shaped piece, and 23 is an inner protrusion, which will be described in detail later. The lid locking part 20 of the embodiment is mainly provided at the container corner 10c.

  Similarly, as can be understood from FIGS. 1 and 2, the lid body 30 is provided with a lid surface portion 36 and a lid edge portion 32 surrounding the outer periphery 31 of the lid surface portion 36. The illustrated lid body 30 is formed into a moderately high shape, and a lid wall portion 35 is provided on the side surface between the lid surface portion 36 and the lid edge portion 32 (outer periphery 31) of the lid body 30. The lid edge portion 32 is provided with a lid collar portion 33 having a flat portion around the periphery. And in order to improve the close_contact | adherence adhesiveness with respect to the opening edge part 12 of the container main body 10, the inner fitting groove part 34 is further in the lid edge part 32 (specifically between the lid wall part 35 and the lid edge part 32). It is formed. In the illustrated embodiment, the lid flange 33 and the inner fitting groove 34 are shared.

  The inner fitting groove portion 34 has a groove structure formed by a lid edge inner wall portion 39, a lid edge inner bottom portion 37, and a lid edge outer wall portion 38 as shown in FIG. Therefore, the inner fitting groove portion 34 enters the lid housing portion 25 constituted by the inner peripheral wall portion 17 and the container inner step portion 18 of the container body 10, and is fitted in surface contact with the inner peripheral wall portion 17 on the inner side thereof. Match. As a result, the lid 30 can be attached to the container body 10. Since the inner fitting groove 34 exists in the lid edge portion 32 around the lid body 30, the structural strength against the bending deformation in the lid edge portion 32 of the lid body 30 is increased.

  Since the container body 10 has the opening edge portion 12 in a rectangular polygonal shape, the lid edge portion 32 of the lid body 30 has a corresponding shape as shown in FIG. Polygonal shape. The shape is a combination of the lid corner portion 30c and the lid side portion 30s. The shape of the lid in plan view corresponds to the opening edge of the container body, and is appropriate depending on the container body.

  2, the lid edge portion 32 of the lid body 30 is fitted inside the opening peripheral wall portion 17 of the container body 10 and is stably locked to the lid body accommodating portion 25. . Therefore, the opening peripheral wall portion 17 of the container body 10 is formed to have a sufficient height that exceeds the height of the inner fitting groove portion 34 of the lid edge portion 32. In particular, the opening peripheral wall portion 17 is designed so that the lid engaging portion 20 provided in the opening peripheral wall portion 17 has a height that is higher than the lid edge outer wall portion 38 of the lid edge portion 32. For details, refer to FIG.

  In addition to the partially enlarged plan view of the container body of FIG. 3, the lid locking portion 20 will be described with reference to a partially cutaway perspective view of the container body of FIG. In this embodiment, as defined in the invention of claim 4, the lid edge portion 12 and the opening peripheral wall portion 17 of the container body 10 both form a rectangular shape in a polygon in plan view, and the lid locking portion 20 is located in the container corner | angular part 10c used as the corner | angular part of the opening surrounding wall part 17. As shown in FIG. In order to equalize the load required for locking the lid, the lid locking portion 20 is provided on all of the four corner portions 10c of the container body 10 having a rectangular shape in plan view as shown in FIG. The position where the lid locking part 20 is arranged is a part including the corner of the container, such as the container corner 10c. This is because the error in the length in the diagonal direction increases when the corner of the container is completely used.

  The lid locking portion 20 includes a barbed portion 21 for continuing to engage the lid 30 once fitted. The barb portion 21 is a V-shaped piece 22 formed by being bent inward of the container body 10 as defined in the invention of claim 2. Specifically, the opening peripheral wall portion 17 of the container body 10 is cut into a V shape. Therefore, an inverted triangular V-shaped piece 22 in which a cut 24 is generated and only the upper side is connected to the opening peripheral wall portion 17 can be obtained. Only the cut end of the V-shaped piece 22 is bent into the container body 10. The barbed portion 21 has the simplest and simplest structure for preventing the lid 30 from being detached. The shape of the barb portion 21 is not necessarily V-shaped, but is adopted because it is relatively easy to process.

  In addition, in the illustrated embodiment, as defined in the invention of claim 3, the lid locking portion 20 is provided with an inner protrusion 23 that protrudes to the inside of the container body 10. The barb 21 is formed on the inner protrusion 23. The inner protrusion 23 is formed in a trapezoidal cone shape that protrudes from the opening peripheral wall portion 17 to the inside of the container body 10. Due to the presence of the inner protrusion 23, the barb portion 21 further reaches the container body inside 14 side than the inner peripheral wall portion 17. Therefore, the gap between the opening peripheral wall portion 17 of the container body 10 and the lid edge portion 32 of the lid body 30 can be partially narrowed, and the barb portion 21 can be brought closer to the lid edge portion 32. Reference numeral 17e in FIG. 4 is a lower end of the opening peripheral wall portion.

  FIG. 5 is a partially enlarged plan view of the fitting state of the lid 30 of the container 1 and the container body 10. When the lid body 30 is fitted into the specified position of the container body 10, the lid edge outer wall portion 38 of the inner fitting groove 34 formed in the lid edge portion 32 of the lid body 30 is returned to the lid locking portion 20. It is located below the part 21 (V-shaped piece 22). Even if the lid edge portion 32 of the lid body 30 is to be lifted, the lid edge outer wall portion 38 of the lid edge portion 32 comes into contact with the slightly raised barbed portion 21, and between the barbed portion 21 and the opening peripheral wall portion 17. Get caught in the gap. Therefore, the presence of the barb portion 21 becomes a resistance and prevents the lid 30 from being lifted. When the lid 30 is lowered to the specified position of the container main body 10, the barb 21 (V-shaped piece 22) is bent toward the opening peripheral wall 17 due to the elasticity caused by the material of the container main body 10. Therefore, the lid edge outer wall portion 38 of the lid body 30 is fitted to the container body 10 without receiving resistance. As a result, simple and firm locking at the container corner 10c of the container body 10 is completed.

  In general, when a lid is locked to a polygonal container body, a stable locking can be realized with the minimum number of lid locking portions by providing the lid locking portions at diagonally arranged container corners. Can do. However, when assuming a platter assortment such as a package of side dishes or a container for assorted dishes, the interval between the corners of the container may be longer than that of a lunch box container. For this reason, the locking force for maintaining the fitting between the container main body and the lid at the container side portion tends to be weak. Considering this point, it can be said that it is desirable to provide a lid locking portion on the side of the container. Alternatively, since the container body is shaped with emphasis on design interest, it may not always be appropriate or impossible to provide a lid locking portion at the corner of the container.

  Therefore, the container 1X of the second embodiment can be disclosed as shown in FIG. FIG. 4 is a partially enlarged plan view of a container main body 10x of the container 1X and a lid body 30 in an assembled state. In the container main body 10x, as defined in the invention of claim 5, the lid locking portion 20 is located on the side portion of the opening peripheral wall portion 17, and in the drawing, the container side portion 10s is also covered with the container side portion 10c. A locking part 20 is arranged. Therefore, in both the container corner 10c and the container side 10s, the cover edge outer wall 38 of the inner fitting groove 34 formed in the cover edge 32 of the cover 30 is the barbed portion 21 ( It will be locked by the V-shaped piece 22). For this reason, the locking performance in the container side portion 10s is enhanced, which helps to maintain the fitting between the container body 10x and the lid 30 in the container side portion 10s. Note that, unlike the disclosed example of FIG. 6, the lid locking portion 20 may be disposed only on the container side portion 10 s.

  Thus, using the partially enlarged longitudinal sectional views of FIGS. 7 to 10 corresponding to the AA section of FIG. 5, focusing on the movement of the lid locking portion 20, the fitting mode of the container body 10 and the lid body 30 is changed. explain. FIG. 7 shows the container 1 before the container body 10 and the lid 30 are fitted, that is, both are separated. Therefore, the lid body 30 is roughly aligned immediately above the lid body accommodating portion 25 that is a position where the container body 10 is to be fitted. At this point, the barbed portion 21 (V-shaped piece 22) of the lid locking portion 20 is bent toward the inside of the container body 10 (the container body interior 14 side). And the clearance gap part 26 arises between the raising barbed part 21 and the opening surrounding wall part 17 (inner protrusion part 23).

  FIG. 8 shows the start of fitting of the container body 10 and the lid 30 in the container 1. As the lid 30 is lowered, the lid edge outer wall 38 that is the outermost end of the lid edge 32 is also lowered. Therefore, the lid edge outer wall portion 38 contacts the barb portion 21 and pushes the barb portion 21 toward the cut end 24. Since the barb portion 21 is open only on the downward side, the lid edge portion 32 does not receive resistance from the barb portion 21 when the lid body 30 is lowered.

  FIG. 9 shows a state where the container body 10 and the lid 30 in the container 1 are completely fitted. The lid edge portion 32 of the lid body 30 is accommodated in the lid body accommodating portion 25 and is fixed in contact with the lid receiving step portion 18. Since the lid receiving step portion 18 receives the lid edge portion 32 of the lid body 30, the lid body 30 does not fall into the container body inside 14 of the container body 10 more than necessary. Further, the lid receiving step portion 18 can narrow the interval between the barbed portion 21 of the lid locking portion 20 and the lid edge portion 32. Therefore, the lid edge portion 32 can be moved inadvertently in the lid housing portion 25, and the possibility of coming off the barb portion 21 can be reduced.

  As described above, the inner protrusion 23 brings the barb 21 closer to the lid edge 32. In addition, as can be understood from the cross-sectional view of FIG. 9, the lid edge portion 32 (in the embodiment, the lid edge outer wall portion 38) of the lid body 30 is opened when being lowered while being in contact with the opening peripheral wall portion 17. Since the inner protrusion 23 exists in the peripheral wall portion 17, the lid body 30 receives resistance through the lid edge portion 32 (lid edge outer wall portion 38) when the lid body 30 is lowered. Therefore, it is possible to confirm the fitting condition (fitting state) when the lid 30 is fitted into the lid housing portion 25 of the container body 10. In particular, in the operation of covering the lid, it is possible to rely on the touch without having to look at it one by one. For this reason, the efficiency at the time of fitting a cover body correctly increases.

  FIG. 10 shows a state in which the lid 30 is fitted and locked to the container body 10 in the container 1. Even if the lid 30 is lifted from the lid housing portion 25 so that the lid 30 is detached from the container body 10, the lid edge 32 (the lid edge outer wall portion 38) contacts the barbed portion 21 of the lid locking portion 20. Then, it bites into the gap portion 26 with the opening peripheral wall portion 17. As a result, the lid 30 does not rise more than this state. Therefore, the lid 30 and the container body 10 can be locked with a simple structure such as the barb portion 21.

  The sectional views of FIGS. 7 to 10 are good examples for explaining the opening edge 12 and the lid edge 32 in the present embodiment, and the detailed structure of each is also described. The opening edge portion 12 of the container body 10 includes an opening peripheral wall portion 17, a container flange portion 13, and an outer peripheral wall portion 19. Further, the lid edge portion 32 of the lid body 30 has an inner fitting groove portion 34. The inner fitting groove 34 is a groove structure formed in a U-shape by coupling the respective wall portions of the lid edge inner wall portion 39, the lid edge inner bottom portion 37, and the lid edge outer wall portion 38 extending from the lid wall portion 35. .

  As described above, since the wall-like portions in different directions are combined, the opening edge portion 12 of the container body 10 and the lid edge portion 32 of the lid body 30 can maintain the strength as a frame, and can be appropriately deformed. Provide resistance. That is, the container body 10 and the lid body 30 can maintain the mutual fitting accuracy.

  Of course, it is not always necessary to adopt the structure of the opening edge portion and the lid edge portion in the disclosed embodiment, and a simplified structure in which the flange protrudes depending on the material of the container main body and the lid body can be used. For example, the container 1Y of the third embodiment of FIG. 11 can also be disclosed. The figure is an enlarged partial longitudinal sectional view of the vicinity of the lid locking portion 20 in the container 1Y. In this example, the opening edge portion 12 of the container main body 10 y is constituted by the lid receiving step portion 18 and the opening peripheral wall portion 17, and the lid edge portion 32 of the lid body 30 y is constituted by the lid wall portion 35 and the lid flange portion 33. . Even when the lid 30y of the third embodiment is about to come off from the container body 10y and the lid edge 32 is lifted from the lid housing 25, the lid edge 32 (the lid collar 33) is locked as described above. While contacting the barbed portion 21 of the portion 20 and receiving the resistance of the barbed portion 21, it bites into the gap portion 26 with the opening peripheral wall portion 17. Therefore, the locking effect is exhibited.

  FIG. 12 is an overall perspective view of the separated state of the container 1Z according to the fourth embodiment of the present invention. The container 1Z of this embodiment is a truncated cone (including a cylinder) formed in a circular shape in plan view, unlike the rectangular container 1 in plan view shown and described above. As a form having no distinction between corners and sides as in the disclosed circular shape in plan view, an elliptical shape in plan view is added in addition to the illustration. In the container 1Z, the lid body 30z is combined with the container body 10z. The configurations of the upper surface 11, the opening edge 12, the container collar 13 and the like of the container body 10z are the same as those in the above-described embodiment except that there is no distinction between the container corner and the container side. In addition, the outer peripheral wall part 19 is abbreviate | omitted in the container main body 10z.

  The configurations of the lid surface portion 36, the lid edge portion 32, the lid flange portion 33, the inner fitting groove portion 34, and the like of the lid body 30z are the same as those in the above-described embodiment except that the lid corner portion and the lid side portion are not distinguished. The inner fitting groove portion 34 of the lid body 30z of this embodiment is formed in a circle over the entire circumference inside the lid collar portion 33 of the lid edge portion 32. The opening peripheral wall portion 17 of the opening edge portion 12 of the container body 10z that receives the inner fitting groove portion 34 of the lid body 30z so as to be fitted is also circular. In addition, also in the said container 1Z, the securing structure containing the said latching recessed part and a latching convex part can be provided in order to ensure the joining strength.

  Similar to the container 1 described above, the container body 10z is also provided with a lid locking portion 20. The arrangement position of the lid locking portion 20 is a side portion of the opening peripheral wall portion 17. A barbed portion 21 is formed on the lid locking portion 20. In the illustrated example, the barbs 21 of the lid locking portions 20 provided at three positions at intervals of 120 ° are all V-shaped pieces 22 and are formed on the inner protrusions 23. After the lid 30z is fitted inside the opening edge 12 of the container body 10z, the lid edge 32 (lid edge outer wall 38) comes into contact with the barb 21 and is locked to the opening peripheral wall 17. . In this way, the locking between the lid and the container body can be simple and strong.

  By applying the structure of the container main body and the lid to the containers of the embodiments shown and described in detail so far, even in a container having a structure in which the lid fits inside the container main body, the lid is easily and firmly engaged. Can be achieved. In particular, since the lid can be easily locked and fixed, advantages such as omission of wrap film packaging are also exhibited. Therefore, it is possible to propose containers and lids that can be differentiated from other products and appeal to buyers and sellers.

  In addition, in the container of 2nd, 3rd, 4th Example, the same code | symbol is attached | subjected to the site | part which is common in 1st Example, and description was abbreviate | omitted because it overlapped. In addition, the size and shape of the container body and lid in the container of the present invention, as well as the size and shape of the opening edge and lid edge, etc. are optimally selected in consideration of the intended purpose, application, and contents of the container. Is done. For this reason, it is not limited only to the structure of the Example shown and explained in full detail.

1, 1X, 1Y, 1Z Container 10, 10x, 10y, 10z Container body 11 Upper surface 12 Opening edge 13 Container flange 17 Opening peripheral wall 18 Lid receiving step part 19 Outer peripheral wall 20 Lid locking part 21 Folding part 22 V Character-shaped piece 23 Inner protrusion 25 Lid housing part 30, 30y, 30z Lid 32 Lid edge 33 Lid lid 34 Inner fitting groove 35 Lid wall 36 Lid surface 37 Lid inner bottom 38 Lid outer wall

Claims (6)

A lid body provided with a lid surface portion and a lid edge portion surrounding the outer periphery of the lid surface portion; and a container body having an upper surface opened to form an opening edge portion and an opening peripheral wall portion provided around the opening edge portion, The lid edge portion of the lid body is fitted inside the opening peripheral wall portion of the container body, and the lid body is locked to the container body side,
A lid receiving step portion is provided at the lower end of the opening peripheral wall portion of the container body, and a lid locking portion having a barbed portion on the opening peripheral wall portion is provided,
When the lid edge portion of the lid body is accommodated in the lid body accommodating portion formed by the opening peripheral wall portion and the lid receiving step portion, the lid edge portion comes into contact with the barb portion and the opening peripheral wall portion side A container characterized by being locked to.   The container according to claim 1, wherein the barb portion is a V-shaped piece formed by being bent toward the inside of the container body.   The container according to claim 1 or 2, wherein the lid engaging portion is provided with an inner protrusion that protrudes inward of the container body, and the barb is formed on the inner protrusion.   The lid edge portion and the opening peripheral wall portion form a polygonal shape in plan view, and the lid locking portion is located at a corner of the polygonal opening peripheral wall portion. The container according to item.   The container according to any one of claims 1 to 3, wherein the lid locking portion is located on a side portion of the opening peripheral wall portion.   The container according to any one of claims 1 to 5, wherein the container body is used for packaging a lunch box or a side dish.

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