JP2009126554A - Lid of packaging vessel and packaging vessel using the lid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid of a packaging vessel which is fitted to the vessel with a tactile feeling, and to provide a packaging vessel using the lid. <P>SOLUTION: The packaging vessel includes the vessel 30 and the lid 1 wherein the lid 1 is constituted by a truncated quadrangular pyramid-shaped body 10 obtained by being molded from a plastic and a frame body 12 integrally formed with an end part of an opening of the body 10. A protrusion is formed on the inside of a circumferential wall part 12a of the frame body 12, and a swollen part 14 made by outward swelling a part of the circumferential wall 12a is formed at a corner 12d of the frame body 12. When the lid 1 is applied to an opening end edge 33 of the vessel 30 and pushed therein, the protrusion gets over the end edge 33 and the vessel 30 is closed with the lid 1 with a tactile feeling. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lid of a packaging container and a packaging container using the lid, and particularly relates to a lid suitable for a container having an inverted truncated pyramid shape and a packaging container using the lid.

  Conventionally, packaging containers as so-called one-way food containers have been used for the distribution, display, sale, etc. of food such as lunch boxes, sandwiches, prepared dishes, and sushi. The packaging container generally has a structure in which a lid is fitted and fixed to the container body, and a structure that can easily and reliably open the lid is required so that the contents are not spilled when the lid is opened. It has been.

For example, as shown in FIG. 6, the most common structure of such a packaging container is that the corner portion 34 of the container 30 is literally square and the corner portion 61 of the lid 60 is formed in a curved shape.
On the other hand, as disclosed in Patent Document 1, a fitting groove having a dovetail cross-sectional shape is formed on the outer edge of the end of the lid, and the outer edge of the opening end of the container corresponding to the position of the fitting groove. Similarly, there is a packaging container having a structure in which a lid is securely fitted to a container by forming a dovetail-like fitting groove and press-fitting the fitting groove of the lid into the fitting groove of the container.

Further, in Patent Document 2, a concave fitting portion is formed on the outer peripheral wall portion of the lid, while the outer edge of the opening end portion of the container is used as a protruding edge, and the protruding edge is fitted to the fitting portion of the lid. Therefore, a packaging container having a structure that prevents the lid from being inadvertently removed from the container has been proposed.
JP 09-226797 A (see [FIG. 2]) Japanese Patent Laid-Open No. 11-059712 (see [FIG. 3])

  In the packaging container of the prior art described with reference to FIG. 6, the lid is formed by vacuum forming or pressure forming of a plastic sheet, but the container has a simple shape. Many paper products that are assembled in a formal manner are also seen, and it can be said to be environmentally friendly in that it does not use materials such as plastics made of petroleum products. However, in this configuration, when the lid 60 is closed with respect to the container 30, there is a problem that a moderation feeling as to whether the lid 60 is securely locked to the container 30 cannot be obtained.

  On the other hand, in the packaging containers disclosed in Patent Documents 1 and 2, the moderation feeling that is lacking in the above-described conventional packaging containers seems to be felt as a moderation feeling obtained according to the structure. It has become. However, in order to form a packaging container having such a moderation feeling, both the lid and the container must use plastic sheet moldings, etc. There is a problem that both the molds must be prepared and the manufacturing cost increases.

  The present invention has been made paying attention to such problems, and the object of the present invention is to provide a lid for a packaging container capable of fitting the lid with a moderate feeling to the container, and for packaging using the lid. To provide a container.

  In order to solve the above problem, the invention of a packaging container lid according to claim 1 is a packaging container comprising a container and a lid, wherein the lid is a truncated pyramid shaped body obtained by molding plastic and the body. The frame is formed integrally with the opening end of the frame, and a protrusion is formed inside the peripheral wall of the frame, and a part of the peripheral wall is externally attached to the corner of the frame. A bulging portion bulging in the direction is formed.

  According to a second aspect of the present invention, in the lid of the packaging container according to the first aspect, the main body of the lid has a truncated pyramid shape in which the ridge and corners are curved, A step portion extending outward is formed at the opening end portion, and the frame body extends outward from a peripheral wall portion formed by hanging from an outer edge of the step portion and a lower end of the peripheral wall portion. It is characterized by comprising a flange portion and a reinforcing rib portion protruding upward at the outer edge of the flange portion.

  According to a third aspect of the present invention, in the lid of the packaging container according to the first or second aspect, a plurality of the protrusions are provided on the entire inner periphery of the peripheral wall at the same height of the peripheral wall. It is characterized by being formed discontinuously.

  According to a fourth aspect of the present invention, in the lid of the packaging container according to any one of the first to third aspects, the ridge portion faces the bulging portion at least on both sides of the bulging portion. It is characterized by being arranged.

  According to a fifth aspect of the present invention, in the lid of the packaging container according to any one of the first to fourth aspects, the shape of the peripheral wall portion forming the bulging portion is a part of the hollow cylindrical body. It is characterized by being.

  A sixth aspect of the present invention is the lid of the packaging container according to any one of the first to fifth aspects, wherein the lid is a plastic using a molding die whose outer surface shape is the molding surface. The sheet is formed by vacuum forming or pressure forming, and the thickness of the lid body is relatively thin with respect to the thickness of the frame.

  The invention according to claim 7 is a packaging container using the lid of the packaging container according to any one of claims 1 to 6, wherein the container is inclined outwardly toward the bottom wall and upward. And the side wall of the lid is elastically deformed outwardly by pushing the frame of the lid against the opening edge of the container, and the peripheral wall portion The projecting ridge formed over the container extends over the opening edge of the container, and the projecting ridge is positioned in contact with the inclined surface outside the opening edge of the container.

The invention according to claim 8 is the packaging container according to claim 7, wherein the container is made of paper.
(Function)
According to the present invention, in a packaging container comprising a container and a lid, the lid is composed of a truncated pyramid-shaped main body obtained by molding plastic and a frame body integrally formed at the opening end of the main body. Yes. And the protrusion part is formed inside the surrounding wall part of the frame, and the bulging part which bulged a part of surrounding wall part outward is formed in the corner | angular part of the frame. . Therefore, if this lid is pressed against the opening edge of the inverted truncated pyramid-shaped container, the protruding portion will get over the opening edge of the container and come into contact with the inclined surface outside the opening edge, The lid can be hung on the container so that the lid does not inadvertently come off the container. Further, when the container is closed with the lid, the bulging portion of the lid can be accommodated without deforming the corner portion of the container, so that the pushing force required to deform the corner portion becomes unnecessary, and the ridge portion is You can feel the moderation feeling when you go over the edge of the opening.

  Furthermore, if the protrusion is formed discontinuously at the same height of the peripheral wall portion on the entire inner periphery of the peripheral wall portion, the resistance increases when the lid is pushed against the opening edge of the container. It doesn't pass too much, and it feels moderate. In addition, if the ridges are arranged so as to face the bulges at least on both sides of the bulges, the deformation tolerance of the bulges is greater than when no bulges are provided at the corners of the frame. However, moderate rigidity can be obtained. Therefore, when the protruding portion near the bulging portion gets over the opening edge of the container, the protruding portion can smoothly get over, and the disappearance of the resistance feeling after getting over can be felt as a moderation feeling.

  Further, according to the present invention, the lid is formed by vacuum forming or pressure forming a plastic sheet using a mold having the outer surface shape as a molding surface. Therefore, since the thickness of the lid body is relatively thin relative to the thickness of the frame, it is possible to prevent the lid from becoming unnecessarily high in rigidity, and by adjusting the rigidity of the frame, the lid Therefore, an appropriate moderation feeling can be obtained when closing the container.

  ADVANTAGE OF THE INVENTION According to this invention, the lid | cover of the packaging container which can fit a lid | cover with a moderate feeling with respect to a container, and the packaging container using the lid | cover can be provided.

(First embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a packaging container lid embodying the present invention and a packaging container using the lid will be described with reference to FIGS. In addition, about the same structure as a prior art, the same code | symbol used in the description shall be used.

  In FIG. 1, a lid 1 is a molded product obtained by vacuum forming or pressure forming a transparent synthetic resin sheet such as polystyrene or vinyl chloride, and a main body 10 having a truncated pyramid shape with curved edges and corners. And a step portion 11 extending outward at the opening end portion, and a frame body 12 formed integrally with the step portion 11. The frame body protrudes upward at the outer peripheral edge of the flange portion 12b, the peripheral wall portion 12a formed by hanging from the outer edge of the step portion 11, the flange portion 12b extending outward from the lower end of the peripheral wall portion 12a. The reinforcing rib portion 12c is formed. Further, a bulging portion 14 is formed at the corner portion 12d of the frame body 12. As will be described in detail later, the bulging portion 14 includes a curved surface portion 14a and a top plate portion 14b that form a part of a hollow cylindrical body. This is a space that accommodates the corner 34 of the container 30 when the container 30 is closed by the lid 1. The top plate portion 14b is the same surface as the surface on which the step portion 11 is formed. The protrusions 15 formed on the stepped portion 11 are provided such that when the plurality of lids 1 are overlapped, the lids 1 do not adhere to each other and a gap is formed.

  The container 30 in this embodiment is made of cardboard, and is formed by a bottom wall 31 and a side wall 32 that is inclined outward toward the upper side by assembling a paper that has been developed and cut into a final shape into an origami shape. It is formed in the shape of a quadrangular pyramid, and its opening edge 33 is in a state in which the paper is cut or in an angled state of mountain folding. A feeling of moderation is felt immediately after the protruding edge 13 gets over the opening edge 33 to get over.

  As shown in FIG. 2, the ridge 13 is formed discontinuously on a pair of ridges 13 a disposed on both sides of the bulge 14 and facing the bulge 14, and an intermediate portion thereof. It consists of the protruding ridge 13b.

  Next, the details of the frame body 12 and the ridge portion 13 will be described with reference to FIG. As described above, the peripheral wall portion 12a is formed to hang down from the outer edge of the step portion 11. However, since it is not desired to provide a corner as a thin plate portion as a molding condition, the outer edge is chamfered. The lower part of the protrusion part 13 is connected to the flange part 12b that extends outward from the lower end of the peripheral wall part 12a via the guide slope 21. When the container 30 is closed with the lid 1, the guide slope 21 allows the protrusion 13 to ride on the guide slope 21 and smoothly pass over the opening edge 33. Since the reinforcing rib portion 12c protrudes upward at the outer edge of the flange portion 12b, the rigidity as the frame body 12 is maintained.

  FIG.4 (b) is another example of the protrusion part 13 in the frame 12 shown in Fig.4 (a). Since the lid 1 of another example is different from that shown in FIG. 4A only in the part shown in FIG. 4B, the other parts are not particularly shown or described.

  While the peripheral wall portion 12a hangs down from the outer edge of the step portion 11, in another example, the peripheral wall portion 22 is a slope inclined to the outside. On the other hand, the ridge 23 is formed such that a part of the inclined part 24 formed by inclining a part of the peripheral wall part 22 inwardly protrudes in a protruding shape, and a lower part thereof is a flange as a guide slope 25. It is connected to the part 12b. As described above, since the protruding portion 23 has a slightly higher degree of protrusion than the protruding portion 13, the protruding portion 23 is selectively used in a storage container that requires a sense of moderation when the container 30 is closed using the lid 1. Can be done.

  The cross-sectional view shown in FIG. 5 schematically shows the shape of the ridge 13 slightly exaggerated in order to simply represent the situation when the container 30 is closed using the lid 1. It can be understood that the protrusion 13 of the lid 1 is hooked on a side wall 32 (an outer inclined surface inclined outwardly upward) near the opening edge of the container 30. As described with reference to FIG. 1, when the protruding portion 13 gets over the opening edge 33 of the container 30, a resistance force is generated to elastically deform the frame body 12, but the protruding portion 13 has an opening edge at one end. When overcoming 33, the elastic restoring force of the frame body 12 causes the position of the ridge 13 to move inward at a stretch and come into contact with the inclined surface. The touch with a light sound at this time is felt as a moderation feeling.

As mentioned above, according to the lid | cover of the packaging container of the said embodiment, and the packaging container using the lid | cover, the following effects can be acquired.
(1) In the above embodiment, the lid 1 is formed by the quadrangular pyramid-shaped main body 10 formed by vacuum forming a plastic sheet and the frame 12 integrally formed at the opening end of the main body 10. The ridge portion 13 is formed on the inner side of the peripheral wall portion 12 a of the frame body 12. Therefore, when the container 30 is closed using the lid 1, the protruding portion 13 that has climbed over the opening edge 33 of the container 30 is hung on the outer surface of the side wall 32 inclined outwardly with a sense of moderation. Can be stopped, and a high-class feeling can be obtained.

  (2) In the above embodiment, since the bulging portion 14 in which a part of the peripheral wall portion 12a is bulged outward is formed in the corner portion 12d of the frame 12 of the lid 1, the bulging portion 14 is formed of the lid 1 Thus, the corner portion 34 of the container 30 when the container 30 is closed becomes a space that can be accommodated without deforming the corner portion 34. Therefore, even if the inverted square pyramid shaped container 30 having the paper corners 34 is used, the pushing force of the lid 1 required for the deformation of the corners 34 as in the prior art becomes unnecessary, and the lid 1 against the container 30 is eliminated. It is possible to provide a packaging container in which a sense of moderation is felt sensitively during closing.

  (3) In the above embodiment, the bulging portion 14 is formed by bulging a part of the peripheral wall portion 12a outward at the corner portion 12d of the frame 12 of the lid 1. Therefore, the frame body 12 is more deformable than the corner portion 12d where the bulging portion 14 is formed, and deforms the bulging portion 14 as compared with the case where the bulging portion 14 is not provided in the corner portion 12d. Since the force may be relatively small, the ridges 13a located on both sides of the bulging portion 14 can smoothly get over the opening edge 33 of the container 30. And since moderate rigidity is left in the bulging part 14 which has the curved-surface part 14a, the packaging container which can close the container 30 with the lid | cover 1 with a favorable moderation feeling can be provided.

  (4) In the above embodiment, the protrusion 13 is formed discontinuously on the entire inner periphery of the peripheral wall 12a at the same height of the peripheral wall 12a. Therefore, since the container 30 is closed using the lid 1, when the lid 1 is pushed in, the resistance does not increase excessively, and an appropriate resistance can be obtained. Therefore, the packaging container in which the feeling of moderation is suitably adjusted can be provided by adjusting the disposition of the discontinuous protrusions 13.

  (5) In the above embodiment, since the plastic sheet is formed by vacuum molding or pressure molding using a molding die whose outer surface shape is the molding surface, the thickness of the body 10 of the lid 1 is the frame body. It is formed relatively thin with respect to the thickness of 12. Therefore, even if the rigidity of the frame 12 is adjusted in order to obtain a suitable moderation feeling, the rigidity of the main body 10 can be kept relatively low, so that a packaging container in which the lid 1 can be easily opened and closed can be provided.

(Example of change)
In addition, you may change the said both embodiment as follows.
In the above embodiment, the shape of the main body 10 of the lid 1 and the shape of the container 30 are square frustums, but the shapes of the main body 10 and the container 30 are other frustums, such as a triangular frustum, a pentagonal frustum, and six It may be a truncated pyramid.
In the above embodiment, the material of the lid 1 is polystyrene or vinyl chloride, but other plastics such as polypropylene, polyethylene, polyethylene terephthalate, etc. may be used.
In the above embodiment, the plastic sheet is formed by vacuum molding or pressure forming using a mold having the outer surface shape of the lid 1 as a molding surface, but may be formed by blow molding.
In the above embodiment, the material of the container 30 is paper, but the container 30 may be formed using other materials such as a plastic sheet, a foamed plastic sheet, and a thin wood plate. However, it is desirable that the opening edge 33 of the container 30 is in a state in which the material is cut or in an angled state of mountain folding.

The perspective view which shows the relationship between the lid | cover and container in embodiment of this invention. The bottom view of the lid of this embodiment. Sectional drawing which rotated 90 degree | times counterclockwise the cross section by the side view of the lid | cover of this embodiment. (A) is detailed sectional drawing of the A section in FIG. 3, (b) is detailed sectional drawing which shows the example. Sectional drawing which exaggerates one part about the state which closed the cover of this embodiment to the container. The perspective view which shows the relationship between the lid | cover and container of a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lid, 10 ... Main body, 11 ... Step part, 12 ... Frame, 12a, 22 ... Peripheral wall part, 12b ... Flange part, 12c ... Reinforcement rib part, 12d, 34 ... Corner | angular part, 13, 13a, 13b, 23 ... ridge part, 14 ... bulging part, 30 ... container, 31 ... bottom wall, 32 ... side wall, 33 ... opening edge.

Claims (8)

  In a packaging container comprising a container and a lid, the lid comprises a truncated pyramid-shaped main body obtained by molding plastic and a frame integrally formed at the opening end of the main body, and the peripheral wall portion of the frame A packaging container, characterized in that a ridge is formed on the inner side of the frame, and a bulging part is formed at the corner of the frame so that a part of the peripheral wall bulges outward. Lid.   The main body of the lid has a truncated pyramid shape in which the ridge line part and the corner part are curved, and a stepped part extending outward is formed at the opening end of the main body. The peripheral wall portion is formed by hanging from the outer edge of the step portion, the flange portion extends outward from the lower end of the peripheral wall portion, and the reinforcing rib portion is formed to protrude upward at the outer edge of the flange portion. The lid | cover of the packaging container of Claim 1 characterized by the above-mentioned.   3. The packaging container according to claim 1, wherein a plurality of the protruding portions are formed discontinuously on the entire inner periphery of the peripheral wall portion at the same height of the peripheral wall portion. lid.   The lid of a packaging container according to any one of claims 1 to 3, wherein the protruding portion is disposed so as to face the bulging portion at least on both sides of the bulging portion.   The shape of the surrounding wall part which forms the said bulging part is a part of hollow cylindrical body, The lid | cover of the packaging container as described in any one of Claim 1 thru | or 4 characterized by the above-mentioned.   The lid is formed by vacuum forming or pressure forming a plastic sheet using a molding die having the outer surface shape of the lid as a molding surface, and the thickness of the lid body is relatively relative to the thickness of the frame body. The lid of the packaging container according to any one of claims 1 to 5, wherein the lid is thin.   The container has an inverted truncated pyramid shape formed by a bottom wall and a side wall that is inclined outwardly upward, and the lid frame is pressed against the opening edge of the container, The peripheral wall portion of the container is elastically deformed outward, the protrusion formed on the peripheral wall portion climbs over the opening edge of the container, and the protrusion is positioned in contact with the inclined surface outside the opening edge of the container. The packaging container using the lid | cover of the packaging container as described in any one of Claim 1 thru | or 6 characterized by the above-mentioned.   The packaging container according to claim 7, wherein the container is made of paper.

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