JP2018047945A - Lid - Google Patents

Abstract

The present invention provides a lid for a packaging container in which a good engagement state can be obtained even when the dimensions of the packaging container are changed. A lid is formed by molding a synthetic resin so as to cover an opening of a packaging container. The lid 1 includes an upper portion having a linear first linear portion at least at a part of the outer periphery in plan view, a peripheral wall portion 20 extending downward from the outer peripheral edge of the upper portion, and a peripheral wall portion 20 in the first linear portion. 1st fitting piece 41 formed between a pair of 1st notch parts 31a and 31b provided in the lower end of this. [Selection] Figure 3

Description

  The present invention relates to a lid of a packaging container, and more particularly to a lid that can be detachably attached to a container body that contains food or the like.

  2. Description of the Related Art Conventionally, a lidded packaging container is known that includes a container body that contains food and the like, and a lid that is detachably fitted to the container body.

  As an example of a packaging container with a lid, a combination of a paper container body produced by press-molding a paperboard base paper and a plastic lid produced by molding a synthetic resin material is known (for example, Patent Document 1 and Patent Document 2).

  FIG. 11 is a cross-sectional configuration diagram when used as a lidded packaging container composed of a conventional paper container and a plastic lid.

  Referring to the figure, outer peripheral portion 151 of lid 150 has a shape bent downward. Further, the paper container is formed by press-molding a paperboard base paper, and an edge winding 127 is formed on the outer periphery thereof.

Japanese Patent Laid-Open No. 10-43027 JP-A-10-71656

  However, due to the nature of the paper container body as described above, a change in shape is unavoidable due to a springback or the like in the edge winding 127 after molding. Moisture may flow out of the food and be absorbed by the paper container, which may change the dimensions. In addition, such a change in dimensions also varies depending on individual container bodies.

  For this reason, even if the dimension of the lid and the dimension of the container are matched by design, the dimensions of the lid and the container may not match when the contents are actually accommodated.

  For these reasons, the outer peripheral portion 151 of the lid 150 is often in a state where the lid 150 is simply put on the upper surface of the container 151 without being sufficiently engaged with the edge winding 127 of the paper container.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lid of a packaging container that can obtain a good engagement state even if the packaging container has a dimensional change.

  In order to achieve the above object, the invention described in claim 1 is a lid formed by molding a synthetic resin so as to cover the opening of the packaging container, and at least the outer peripheral edge in a plan view. It is formed between an upper portion having a first linear portion that is linear in part, a peripheral wall portion that extends downward from the outer peripheral edge of the upper portion, and a pair of first cutout portions provided at the lower end of the peripheral wall portion in the first straight portion. A first fitting piece.

  If comprised in this way, the 1st fitting piece between 1st notch parts will move, and can follow the dimensional change of a packaging container.

  According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the first fitting piece has a convex portion protruding inward.

  If comprised in this way, it will become easy to catch a convex part on the periphery of a packaging container.

  According to a third aspect of the present invention, in the configuration of the first or second aspect of the present invention, each of the pair of first notches has a tapered structure that tapers upward.

  If comprised in this way, it will become a shape advantageous on shaping | molding.

  According to a fourth aspect of the present invention, in the configuration of the first aspect of the present invention, the first fitting piece has a shape that spreads outward as it goes to the lower end. .

  If comprised in this way, it will become easy to align, when attaching a cover to a packaging container because of the shape which spreads toward the lower end.

  According to a fifth aspect of the present invention, in the configuration of the first aspect of the present invention, the upper portion is parallel to the first linear portion at a position facing the first linear portion. It has the 2nd fitting piece formed between a pair of 2nd notch parts which have the 2nd straight line part extended and are provided in the lower end of the peripheral wall part in the 2nd straight line part.

  If comprised in this way, it will become a structure where a packaging container is pinched | interposed by the 1st fitting piece and the 2nd fitting piece.

  According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the present invention, a third straight portion extending in a direction orthogonal to the first straight portion and the second straight portion, and a lower end of the peripheral wall portion in the third straight portion. A third fitting piece formed between a pair of third cutout portions provided in the first portion, a third straight portion extending in a direction perpendicular to the first straight portion and the second straight portion, and the third straight portion. A fourth straight line portion extending in parallel with the third straight line portion, and a fourth fitting piece formed between a pair of fourth cutout portions provided at the lower end of the peripheral wall portion of the fourth straight line portion. It is to be prepared.

  If comprised in this way, it will become a structure which surrounds the four sides of a packaging container by a 1st fitting piece-a 4th fitting piece.

  According to a seventh aspect of the present invention, in the configuration of the sixth aspect of the invention, the upper portion further includes a fifth straight portion provided at least at a part between the first straight portion and the third straight portion, A fifth fitting piece formed between a pair of fifth cutout portions provided at the lower end of the peripheral wall portion in the straight portion and a sixth portion provided at least between the first straight portion and the fourth straight portion. At least one between a straight line part, a sixth fitting piece formed between a pair of sixth cutout parts provided at the lower end of the peripheral wall part in the sixth straight line part, and the second straight line part and the third straight line part A seventh fitting piece formed between a seventh straight portion provided in the portion, a pair of seventh cutout portions provided at the lower end of the peripheral wall portion in the seventh straight portion, a second straight portion, and a fourth straight portion An eighth straight portion provided in at least a portion between and a peripheral wall portion in the eighth straight portion Those comprising an eighth fitting pieces formed between the eighth notch pair provided at the lower end.

  If comprised in this way, it will become a structure which surrounds the eight sides of a packaging container by the 1st fitting piece-the 8th fitting piece.

  The invention according to claim 8 is a lid formed by molding a synthetic resin and covering the opening of the packaging container, and the first straight line having a linear shape on at least a part of the outer periphery in plan view. An upper portion having a second linear portion extending parallel to the first linear portion at a position facing the portion and the first linear portion, a peripheral wall portion extending downward from an outer peripheral edge of the upper portion, and a peripheral wall portion of the first linear portion A first cutout portion provided on one side in the circumferential direction at the lower end and a second cutout portion provided on one side in the circumferential direction at the lower end of the peripheral wall portion in the second straight line portion are provided.

  If comprised in this way, the surrounding wall part in a 1st linear part and a 2nd linear part will move, and can follow the dimensional change of a packaging container.

  As described above, the invention according to claim 1 is good even if there is a dimensional change of the packaging container because the first fitting piece between the first notches can move and follow the dimensional change of the packaging container. An engaged state is obtained.

  In addition to the effect of the invention according to claim 1, the invention according to claim 2 makes it easier for the packaging container and the lid to come off because the convex portion is easily caught on the periphery of the packaging container.

  In addition to the effects of the invention described in claim 1 or 2, the invention described in claim 3 has a shape that is advantageous in terms of molding, so that the production efficiency is improved.

  In addition to the effects of the invention according to any one of claims 1 to 3, the invention according to claim 4 is easy to align when attaching the lid to the packaging container due to the shape of the end spread toward the lower end. Installation is easy.

  The invention according to claim 5 has a structure in which the packaging container is sandwiched between the first fitting piece and the second fitting piece in addition to the effect of the invention according to any one of claims 1 to 4. The fitting between the packaging container and the lid becomes stronger.

  In addition to the effect of the invention of claim 5, the invention of claim 6 has a structure that surrounds the four sides of the packaging container by the first fitting piece to the fourth fitting piece. The fitting is more stable.

  In addition to the effect of the invention of claim 6, the invention described in claim 7 has a structure that surrounds the eight sides of the packaging container by the first fitting piece to the eighth fitting piece. Shaking when attached can be further suppressed.

  In the invention according to claim 8, since the peripheral wall portions in the first straight portion and the second straight portion can move to follow the dimensional change of the packaging container, a good engagement state can be obtained even if the dimensional change of the packaging container occurs. .

It is the perspective view which showed the external appearance shape of the cover body by 1st Embodiment of this invention. It is a top view of the cover body shown in FIG. It is a front view of the cover body shown in FIG. It is a left view of the cover body shown in FIG. FIG. 5 is a partial end view of the VV line shown in FIG. 3. FIG. 6 is a partial end view when the lid is attached to the packaging container, and corresponds to FIG. 5. It is a top view which shows the external appearance shape of the cover body by 2nd Embodiment of this invention, Comprising: It corresponds to FIG. FIG. 8 is a partial side view showing a part of the lid viewed in the direction of arrow VIII shown in FIG. 7. It is a front view which shows the external appearance shape of the cover body by 3rd Embodiment of this invention, Comprising: It corresponds to FIG. FIG. 10 is a rear view of the lid shown in FIG. 9. It is a cross-sectional block diagram at the time of using as a packaging container with a lid | cover comprised from the conventional paper container and a plastic lid.

  FIG. 1 is a perspective view showing the external shape of a lid according to the first embodiment of the present invention, FIG. 2 is a plan view of the lid shown in FIG. 1, and FIG. 4 is a front view of the lid body shown in FIG. 4, and FIG. 4 is a left side view of the lid body shown in FIG.

  With reference to these drawings, the lid 1 of the packaging container is formed by molding a synthetic resin such as OPS (biaxially stretched polystyrene) or PET (polyethylene terephthalate), and covers the opening of the packaging container to be attached. Formed as follows.

  The lid body 1 includes an upper part 10 having first linear part 11 to a fourth linear part 14 having a linear shape and a peripheral wall part 20 extending downward from an outer peripheral edge of the upper part 10 in plan view.

  The lid 1 is set to have an outer dimension with a width W = 174 mm and a depth D = 121.99 mm.

  The first straight portion 11 to the fourth straight portion 14 on the outer peripheral edge of the upper portion 10 are each formed at a position recessed about 2.4 mm inward from the outer dimensions described above. Thereby, in the 1st linear part 11-the 4th linear part 14, the inner side of the surrounding wall part 20 is set to the dimensional relationship which fits with the outer periphery of the opening part of the packaging container used as attachment object. Details of the fitting structure will be described later.

  Portions other than the first straight portion 11 to the fourth straight portion 14 on the outer peripheral edge of the upper portion 10 are configured by curved portions. A projecting portion 19 projecting upward is provided on the inner side in a plan view of the upper portion 10, thereby ensuring a capacity when attached to the packaging container.

  The height H1 of the lid 1 is set to 20 mm, the height H2 from the lower end to the upper end of the peripheral wall portion 20 is set to 8 mm, and the height H3 of the protruding portion 19 of the upper portion 10 is set to 12 mm. .

  The first straight portion 11 is formed on the front side of the lid, and the second straight portion 12 is formed at a position facing the first straight portion 11 so as to extend in parallel to the first straight portion 11. Has been.

  The third straight portion 13 is formed so as to extend in a direction orthogonal to the first straight portion 11 and the second straight portion 12.

  Further, the fourth linear component 14 is formed at a position facing the third linear portion 13 so as to extend in parallel to the third linear portion 13.

  At the lower end of the peripheral wall portion 20 in the first straight portion 11, a pair of first cutout portions 31 a and 31 b are provided at positions corresponding to both ends of the first straight portion 11.

  The pair of first cutout portions 31a and 31b have an inverted V shape that is pointed upward in front view, and the height of the inverted V shape (that is, the depth of the cutout) H4. Is set to 6 mm. A first fitting piece 41 is formed between the pair of first cutout portions 31a and 31b.

  Also in the second straight portion 12 to the fourth straight portion 14, at the lower end of the peripheral wall portion 20, a pair of second cutout portions 32a and 32b having the same shape as the first cutout portions 31a and 31b, respectively, and a pair of fourth cutout portions. 34a and 34b are formed. A second fitting piece 42 to a fourth fitting piece 44 are formed in each of the pair of second cutout portions 32a and 32b to the pair of fourth cutout portions 34a and 34b.

  5 is a partial end view of the VV line shown in FIG.

  Referring to the figure, the first fitting piece 41 has a shape that expands outward as it goes to the lower end, and protrudes inward near the center in the vertical direction. A convex portion 41a is provided.

  The effects configured in this way are as follows.

  FIG. 6 is a partial end view when the lid is attached to the packaging container, and corresponds to FIG.

  Referring to the figure, when lid 1 is attached to packaging container 50 that has an opening on the upper side and edge winding 51 is formed at the periphery of the opening, a part of edge winding 51 becomes lid 1. The upper part 10, the peripheral wall part 20, and the convex part 41a of the first fitting piece 41 are enclosed.

  As shown in FIG. 2 etc., since the 1st fitting piece 41 exists between a pair of 1st notch parts, it can be moved inward and outward in the meantime. Therefore, since the first fitting piece 41 (that is, a part of the peripheral wall portion 20) between the pair of first cutout portions can move and follow the dimensional change of the packaging container 50, there is a dimensional change of the packaging container 50. A good engagement state can be obtained.

  Moreover, since the convex part 41a becomes easy to get caught in the periphery of the packaging container 50, it has the structure where the packaging container 50 and the lid | cover 1 are harder to remove | deviate.

  Furthermore, since the first fitting piece 41 has a shape that spreads outward as it goes to the lower end, the first fitting piece 41 can be easily positioned when the lid 1 is attached to the packaging container 50, so that the attachment is easy.

  Note that the second fitting piece 42 to the fourth fitting piece 44 shown in FIG. 2 and the like also have the same shape as the first fitting piece 41, thereby obtaining the same effect. it can.

  Further, since there is a second fitting piece in addition to the first fitting piece, the structure is such that the packaging container is sandwiched between the first fitting piece and the second fitting piece. The fitting becomes stronger.

  Furthermore, in addition to the first fitting piece and the second fitting piece, the third fitting piece and the fourth fitting piece provide a structure that surrounds the four sides of the packaging container. And the lid fit more stably.

  FIG. 7 is a plan view showing the external shape of the lid according to the second embodiment of the present invention, which corresponds to FIG. 2, and FIG. 8 is a view in the direction of arrow VIII shown in FIG. It is a partial side view which shows a part of cover body.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  With reference to these drawings, in the lid 1 according to the second embodiment, a straight line portion is further added to the curved portion of the outer peripheral edge of the upper portion 10 in the first embodiment.

  That is, in the lid 1, the upper portion 10 further includes a fifth straight portion 15 provided at least at a part between the first straight portion 11 and the third straight portion 13, and a peripheral wall portion 20 in the fifth straight portion 15. The fifth fitting piece 45 formed between the pair of fifth cutout portions 35a and 35b provided at the lower end of the first and the first linear portion 11 and the fourth linear portion 14 are provided at least in part. The sixth straight portion 16, the sixth fitting piece 46 formed between the pair of sixth notches 36 a and 36 b provided at the lower end of the peripheral wall portion 20 in the sixth straight portion 16, the second straight portion 12, It is formed between a seventh straight portion 17 provided at least at a part between the three straight portions 13 and a pair of seventh cutout portions 37 a and 37 b provided at the lower end of the peripheral wall portion 20 in the seventh straight portion 17. The seventh fitting piece 47 and the second straight portion 1 Formed between at least a portion of the eighth straight portion 18 and the fourth straight portion 14 and a pair of eighth cutout portions 38a and 38b provided at the lower end of the peripheral wall portion 20 of the eighth straight portion 18. The eighth fitting piece 48 is provided.

  In particular, referring to FIG. 8, the shapes of the fifth notches 35 a and 35 b are inverted V-shaped, similar to those of the first notches 31 a and 31 b to the fourth notches 34 a and 34 b described above. The configuration of the fifth fitting piece 45 is the same as that of the first fitting piece 41 to the fourth fitting piece 44 except that the width is different. Note that the fifth notches 35a and 35b and the fifth fitting are the same as the shapes of the sixth notches 36a and 36b to the eighth notches 38a and 38b and the configurations of the sixth fitting pieces 46 to 48. It is the same as that of the piece 45.

  If comprised in this way, it will become a structure which surrounds the eight sides of a packaging container by the 1st fitting piece-the 8th fitting piece. For this reason, rattling when the lid is attached to the packaging container can be further suppressed.

  FIG. 9 is a front view showing the external shape of the lid according to the third embodiment of the present invention, corresponding to FIG. 3, and FIG. 10 is a rear view of the lid shown in FIG. It is.

  Since the description is basically the same as that according to the first embodiment, the difference will be mainly described.

  In the lid 1 according to this embodiment, the number of notches is reduced from that of the first embodiment. Specifically, in the lid 1 according to this embodiment, in the lid 1 according to the first embodiment shown in FIG. 2 and the like, the first cutout portion 31a, the second cutout portion 32b, a pair of The third cutout portions 33a and 33b and the pair of fourth cutout portions 34a and 34b are removed.

  That is, with reference to FIG. 9 and FIG. 10, the lid body 1 has a first straight portion at a position facing the first straight portion 11 and the first straight portion 11 having a linear shape at least at a part of the outer periphery in plan view. 11, the upper part 10 having the second straight part 12 extending in parallel with the outer peripheral part 11, the peripheral wall part 20 extending downward from the outer peripheral edge of the upper part 10, and one side in the circumferential direction at the lower end of the peripheral wall part 20 in the first straight part 11 Provided on one side in the circumferential direction (side indicated by arrow C in the figure) at the lower end of the peripheral wall part 20 in the first notch 31b provided on the arrow C in the figure and the second straight line portion 12. And a second cutout portion 32a.

  Here, the one side in the circumferential direction is one in the circumferential direction and a counterclockwise direction.

  If comprised in this way, the surrounding wall part 20 in the 1st linear part 11 and the 2nd linear part 12 will move, and can follow the dimensional change of a packaging container. Therefore, even if there is a dimensional change of the packaging container, a good engagement state can be obtained.

  In each of the above embodiments, the lid having a specific dimension has been described, but the present invention is not limited to this. The size of the lid can be appropriately set according to the size of the packaging container to be attached.

  In the first embodiment, it has been described that the lid is formed by molding a specific synthetic resin. However, the present invention is not limited to this, and other synthetic resins such as polypropylene and polyester ( PET, A-PET, etc.), molded products using thermoplastic resins such as polyethylene, vinyl chloride, polystyrene, and nylon. Further, the resin may be any of non-stretched, uniaxially stretched and biaxially stretched.

  Furthermore, in said 1st Embodiment, although the thing in which the edge winding was formed was demonstrated as a packaging container used as the attachment object of a cover body, there is no limitation in particular also in the kind of packaging container used as an attachment object. The lid may be attached to a packaging container that does not have an edge winding.

  Furthermore, in each of the above-described embodiments, the configuration has a plurality of linear portions, but the present invention is not limited to this. The lid body only needs to have at least one straight portion at the top, and a pair of notches are provided at the lower end of the peripheral wall portion in the straight portion, and a fitting piece is formed at the pair of notches. That's fine.

  Furthermore, in each of the above embodiments, the first fitting piece of the lid has a configuration having a convex portion, and a configuration having a shape that expands outward as the first fitting piece goes to the lower end. Although described above, these configurations can be omitted.

  Furthermore, in each of the above-described embodiments, it has been described that the pair of first cutout portions have an inverted V shape, but the present invention is not limited to this. Each of the pair of first cutouts may have a tapered structure that tapers upward.

  Since it will become easy to extract from a shaping | molding die if comprised in this way, it becomes a shape advantageous on shaping | molding. Therefore, production efficiency is improved.

DESCRIPTION OF SYMBOLS 1 ... Lid 10 ... Upper part 11 ... 1st linear part 12 ... 2nd linear part 13 ... 3rd linear part 14 ... 4th linear part 15 ... 5th linear part 16 ... 6th linear part 17 ... 7th linear part 18 ... 8th straight line part 20 ... Peripheral wall part 31a, 31b ... A pair of 1st notch part 32a, 32b ... A pair of 2nd notch part 33a, 33b ... A pair of 3rd notch part 34a, 34b ... A pair of 4th notch part 35a , 35b ... a pair of fifth notches 36a, 36b ... a pair of sixth notches 37a, 37b ... a pair of seventh notches 38a, 38b ... a pair of eighth notches 41 ... a first fitting piece 42 ... second Fitting piece 43 ... third fitting piece 44 ... fourth fitting piece 45 ... fifth fitting piece 46 ... sixth fitting piece 47 ... seventh fitting piece 48 ... eighth fitting piece In each figure The same reference numerals indicate the same or corresponding parts.

Claims (8)

A lid formed by molding a synthetic resin and formed to cover the opening of the packaging container,
An upper portion having a linear first linear portion on at least a part of the outer periphery in plan view;
A peripheral wall portion extending downward from the outer peripheral edge of the upper portion;
A lid comprising: a first fitting piece formed between a pair of first cutout portions provided at a lower end of the peripheral wall portion in the first straight line portion.   The lid according to claim 1, wherein the first fitting piece has a convex portion protruding inward.   3. The lid according to claim 1, wherein each of the pair of first cutouts has a tapered structure that tapers upward.   The said 1st fitting piece is a cover body in any one of Claims 1-3 which has a shape which spreads outward as it goes to a lower end. Further, the upper portion has a second straight portion extending in parallel to the first straight portion at a position facing the first straight portion,
The lid according to any one of claims 1 to 4, further comprising a second fitting piece formed between a pair of second cutout portions provided at a lower end of the peripheral wall portion in the second straight line portion. A third linear portion extending in a direction perpendicular to the first linear portion and the second linear portion;
A third fitting piece formed between a pair of third cutout portions provided at a lower end of the peripheral wall portion in the third linear portion;
A third linear portion extending in a direction orthogonal to the first linear portion and the second linear portion;
A fourth linear portion extending in parallel to the third linear portion at a position facing the third linear portion;
The lid according to claim 5, further comprising a fourth fitting piece formed between a pair of fourth cutout portions provided at a lower end of the peripheral wall portion in the fourth straight line portion. Further, the upper part is a fifth straight part provided at least at a part between the first straight part and the third straight part,
A fifth fitting piece formed between a pair of fifth cutout portions provided at the lower end of the peripheral wall portion in the fifth linear portion;
A sixth straight portion provided at least in part between the first straight portion and the fourth straight portion;
A sixth fitting piece formed between a pair of sixth cutout portions provided at a lower end of the peripheral wall portion in the sixth straight portion;
A seventh straight portion provided at least in part between the second straight portion and the third straight portion;
A seventh fitting piece formed between a pair of seventh cutout portions provided at a lower end of the peripheral wall portion in the seventh straight portion;
An eighth straight portion provided at least in part between the second straight portion and the fourth straight portion;
The lid according to claim 6, further comprising: an eighth fitting piece formed between a pair of eighth cutout portions provided at a lower end of the peripheral wall portion in the eighth linear portion. A lid formed by molding a synthetic resin and formed to cover the opening of the packaging container,
An upper portion having a linear first linear portion and a second linear portion extending in parallel to the first linear portion at a position facing the first linear portion at least in part of the outer periphery in plan view;
A peripheral wall portion extending downward from the outer peripheral edge of the upper portion;
A first cutout portion provided on one side in the circumferential direction at the lower end of the peripheral wall portion in the first linear portion;
A lid provided with the 2nd notch provided in one side of the peripheral direction in the lower end of the peripheral wall part in the 2nd straight part.

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