JP2019218073A - Packaging container - Google Patents

Abstract

To prevent erroneous lid opening by surely opening/closing a lid body for a container body.SOLUTION: A container body 1 has a bottom face, a wall face standing from a periphery of the bottom face and a flange part for a lid body engagement directed outward in relation to the wall face. Besides, a folding part is provided directed outward from a reverse tapered face. While, a lid body reverse tapered face is provided to a lid body 2. A depth of the lid body reverse tapered face is made to correspond to the depth of the reverse tapered face of the container body, and a cut-end of a folding face of the lid body is positioned within a circumference of the folding part of the container body. A knob part 38 is formed expanding outward from the cut-end of the lid body or from a part of the circumference of the folding part of the container body, while a receiving piece 34 corresponding to the knob part is expanded at the container body or a part of the circumference of the lid body. The receiving piece is deformable along the circumference of the container body, and has a circumference larger than that of the knob part.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a closed structure of a lid of a packaging container, which is a molded resin sheet, and a container main body. The lid is easily opened in a state where the container main body and the lid are tightly engaged without easily coming off. It is about a structure that can be done.

  Conventionally, as shown in FIG. 11, a container main body made of resin sheet molding and a lid closed have a flange portion 101 standing up without having a structure for engaging the lid with the container main body 100. The engagement portion 103 having a shape in which the lower side is slightly narrowed down is formed only on the lid 102, and the engagement portion 103 of the lid 102 is engaged with the peripheral edge cut portion 104 of the flange portion 101 of the container body 100, and the container is closed. It is common to cover. However, in such a conventional structure, since the resin sheet constituting the container is relatively thin, if the flange portion 101 of the container body is deformed by twisting or the like, the engagement of the lid is easily released. There was a problem. In addition, since it is necessary to close the lid 102 in a state where the lid 102 is placed on the flange portion 101 of the container body 100 from the outside, the lower peripheral portion 104 of the lid body 102 is located below the flange portion 101 of the container body 100. Jumping out is inevitable. For this reason, when a hand or the like accidentally touches the lower peripheral portion 104 of the lid 102, there is a problem that the lid is easily detached.

  Therefore, in order to prevent the lid from easily coming off, the container body and the lid may be fixed with adhesive tape in a closed state, or the entire container may be further packaged with a shrink-processed film. However, since it was necessary to tape or store the food etc. in the backyard of a supermarket, etc., and wrap it in film, it was not only very troublesome, but also the user had to open the lid after purchasing it. There was a double problem that it was troublesome to do so.

  Further, as a structure for opening the lid, for example, a tongue piece having a shape protruding outward in the horizontal direction is formed on each of a part of the container body and the lid body, and this tongue piece is picked up with both fingers and peeled off. It has been known. However, when the shape of the packaging container is circular, the fitting of the container body and the lid can be performed at any position, but it is preferable that the two tongues be positioned in an appropriate correspondence. However, for example, when closing the lid after storing the contents in a backyard such as a supermarket, the lid must be closed while paying attention to the relationship of the tongue pieces, and it is troublesome when processing a large number of products. there were.

JP 2012-86878 A JP 2000-302150 A JP-A-10-264951

  The applicant has proposed a structure in which a convex portion is formed on the container body and a concave portion corresponding to the convex portion is formed on the lid body with a configuration as shown in FIGS. . In this configuration, the problem that the container body is twisted because the shoulder is formed in the container body can be solved, but also the engagement of the respective concave and convex portions is in a loose state, and furthermore, the upper surface side of the lid body further When containers containing the contents are stacked, the step of the lid is deformed, and the convex part formed on the lid is deformed outward, so the lid can be easily removed with a slight impact Sometimes happened.

  In addition, as a structure for opening the lid, as described in Patent Document 2, a concave portion 14 is provided on a part of the peripheral surface of the container body, and a part of the corresponding lid protrudes outward in the horizontal direction. There is an invention in which a knob piece 23 in a form is formed, the knob piece is housed in a concave portion in a closed state, and the lid is opened by pinching and pulling up the knob piece with a finger at the time of opening. Further, in the invention described in Patent Document 3, the tongue pieces are protruded from the corners of the container body and the lid body in a state where the tongue pieces are partially overlapped and shifted, and when opening the lid, the tongue pieces are separately picked. A configuration that is easier to use is described.

  However, in the configuration described in Patent Literature 2, since the tab pieces protrude from the container body when the lid is closed, there is a risk that the clothes may be inadvertently opened if clothes or the like are caught on the tab pieces during transportation. is there. In addition, since the knob piece is easily caught if the lid is not opened, there is a possibility that an accident may occur in which the hand or the like hits the knob piece and drops the product on the floor when the products are stacked. On the other hand, in the invention described in Patent Literature 3, the tongue pieces protrude outward, and the tongue pieces of the lid are configured to be hooked independently, so that the lid is also opened carelessly. There is a possibility that.

  The present invention solves such a conventional problem, and employs a structure in which the lid body is easily detached by strengthening the fitting between the container body and the lid body. An object of the present invention is to provide a packaging container having an opening structure that can be easily operated and that can prevent inadvertent opening.

  In order to achieve the above-mentioned object, the present invention provides a sheet-shaped packaging container comprising a container body and a lid, wherein the container body has a bottom surface, a wall surface rising from the periphery of the bottom surface, and An outwardly facing lid fitting flange portion is provided, and a reverse tapered surface is provided from the lid fitting flange via a round portion, while the lid is a top plate and downward from a peripheral edge of the top plate. , A lid flange that expands outward from the lower edge of the lid wall, and a lid reverse tapered surface extending from the lid flange through a lid radius Then, an optimal lid-opening structure for applying the depth of the reverse tapered surface of the lid to the depth of the reverse tapered surface of the container body for a packaging container is adopted. To correspond in the packaging container of the present invention, to match the depth, the depth of the lid reverse tapered surface is somewhat shallower than the depth of the reverse tapered surface of the container body, but the lid reverse tapered surface is This includes a range in which a secure lid is achieved by a deep engagement. In the present invention, since the inverted tapered surface is formed on both the container body and the lid, the inverted tapered surface of the lid provided on the lid once passes over the round portion of the container main body and is formed on the inverted tapered surface of the container main body. As a result, reliable strong engagement is realized. The outer shape of the packaging container in the present invention is widely applied such as a circle, an ellipse, an oval, a rectangle, and a hexagon. In addition, it is preferable that the reverse tapered surface provided from the lid fitting flange portion via the round portion has an inclination of 30 to 90 degrees.

  As for the dimensions, a means was used in which the depths of the reverse tapered surface and the lid reverse tapered surface were set to 0.5 to 4.0 mm. With this means, the engagement between the container body and the lid body is ensured, and at the same time, the lid can be opened without using a strong force at the time of opening. Further, when the depth of the lid inversely tapered surface is sufficient, a means of making the depth of the lid inversely tapered surface relatively shallower than the depth of the inverse tapered surface is also used.

  Further, by using a means of forming a folded portion further outward from the reverse tapered surface of the container body and a means of forming a folded surface further outward from the reverse tapered surface of the lid, these are formed by the flange. By adopting a means that fulfills the function and does not exceed the cut end of the folded surface of the lid outside the outer periphery of the folded part of the container body, the cut which is the end of the lid carelessly by human hands It is possible to avoid hitting the end.

  Furthermore, as the engagement structure between the container body and the lid, the rounded portion and the reverse tapered surface of the container main body are formed on the entire circumference, or are formed intermittently on the outer circumference instead of the entire circumference, and Similarly, the engagement structure can be appropriately selected according to the use of the container by the configuration in which the inverted tapered surface of the lid is formed intermittently with respect to the outer periphery.

  And as a lid-opening structure applied to the entire structure of the packaging container, the knob is formed by bulging outward from a part of the outer periphery of the lid or the container body, while the container body or the lid is closed. A receiving piece corresponding to the knob portion is formed so as to bulge on a part of the outer circumference, and the receiving piece is deformable along the outer circumference of the container body and has an outer circumference larger than the outer circumference of the knob portion. That means was adopted. According to this means, since the knob formed on the lid or the container main body does not protrude outside the receiving piece formed on the container main body or the lid, the finger carelessly touches the knob on the lid. It will not be opened. That is, the receiving piece functions to protect the knob portion in a normal state. Further, the receiving piece is deformed along the outer periphery of the container body or the lid, and when the receiving piece is formed on the container body, the receiving piece is turned downward. Is deformed upward so that the distal end of the knob portion acts to separate from the receiving piece, and the knob portion is easily pinched. That is, one of the receiving piece and the knob portion is formed on the container body, and the other is formed on the lid, so that a pair of lids is opened.

Further, the shape of the knob was made flat. The knob is only used when opening the lid, but when it is made flat, it is easy to pinch it with two fingers.

In addition, as the configuration of the receiving piece, a plane corresponding to the knob portion, and a means for forming a protruding portion higher than the thickness of the knob portion in the outer peripheral portion of the plane except for the outer peripheral edge of the container main body are provided. Using. Since the protruding portion is higher than the knob portion, the knob portion is more protected in the state, and at the same time, the careless periphery of the knob portion is prevented from touching a finger or the like. Furthermore, when a container having no protrusion is displayed, the tabs of adjacent containers may interfere with each other, and one of the tabs may go under the other tab, which may be a trigger. Inadvertently, the lid may be opened, but the inconvenience can be avoided by providing the protrusion.

A large number of fine irregularities are formed on one or both of the plane of the knob and the plane corresponding to the knob of the receiving piece, to avoid sticking to each other and also avoid slipping when pinched with a finger. .

  ADVANTAGE OF THE INVENTION According to this invention, while engaging with a container main body and a lid body was able to be implement | achieved reliably, it became possible to prevent the accident that a lid is accidentally opened. In other words, when the lid is closed with respect to the container body, the knob is covered with the receiving piece, so that the knob does not accidentally get caught on the finger or clothes, preventing unintended opening. Is now available.

The perspective view showing the required portion of the packaging container of the present invention. Sectional view of the main part of the container body. The principal part sectional drawing of a lid. The principal part sectional drawing which shows the state which closed the lid to the container main body. The same and the partial cross section showing the container main part of another embodiment. FIG. 7 is a partial cross-sectional view showing a lid according to another embodiment. Sectional drawing which shows one Embodiment which laminated | stacked the container main body and the cover body of the packaging container of this invention. The perspective view which shows the state which closed the container main body and the lid body. The perspective view which shows the knob part provided in the lid body. The perspective view which shows the receiving part provided in the container main body. The principal part sectional drawing which shows the closed state of the conventional container main body and lid.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing one embodiment of a packaging container to which the present invention is applied by a longitudinally cut end face, where 1 is a container body, and 2 is a lid. The container body 1 and the lid 2 are manufactured by a known sheet molding method such as vacuum molding, air pressure molding, or vacuum pressure molding using a molding die. The basic configuration of the container body 1 is composed of a contents container 3, a bottom surface 4 of the contents container 3, and a wall surface 5 rising around the bottom surface 4. As an important configuration of the present invention, a flange portion 6 that expands outward from the wall surface 5 is formed, a peripheral wall portion 7 is formed in a downward annular shape from the entire periphery of the outer peripheral edge of the flange portion 6, and furthermore, the peripheral wall portion 7 is formed. A flange 8 for fitting the lid is formed from the outside to the outside, is continuous with the reverse tapered surface 10 via the round portion 9, and further, a folded portion 11 is formed outward from the reverse tapered surface 10. Since the radius portion 9 is a configuration necessary for forming the reverse tapered surface 10, the radius of curvature is not particularly limited. In addition, since it is important that the inverted tapered surface 10 appears with respect to the lid-fitting flange 8, specifically, an angular configuration may be used instead of the radius. As described above, the round portion in the present invention refers to a configuration in which the reverse tapered surface is continuous from the lid fitting flange.

  The flange 6 and the peripheral wall 7 shown in the present embodiment may be omitted depending on the contents of the container body 1. That is, the present invention includes a configuration in which the lid fitting flange 8 is directly connected from the wall surface 5.

  Next, the configuration of the lid 2 will be described. The lid 2 is basically composed of a top plate 21 and a lid wall 22 that continues downward from the periphery of the top plate 21. As an important configuration, the lid flange portion 24 expands outward from the lower edge portion 23 of the lid wall 22, and the outer periphery of the lid flange portion 24 corresponds to the round portion 9 of the container body 1. A lid round portion 25 is provided, and a lid reverse tapered surface 26 extends from the lid round portion 25, and further continues to a turning surface 27. It is preferable that the round shape of the lid round portion 25 substantially coincides with the round portion 9 of the container body, but it is not necessary to completely match the round shape.

  FIG. 2 is a partial cross-sectional view showing only the engagement portion of the container body 1, FIG. 3 is a partial cross-sectional view of the lid 2, and FIG. FIG. 4 is a partial cross-sectional view showing a state. Here, the engagement state between the container body 1 and the lid 2 indicates a state in which the round shape of the round portion 9 of the container body and the round shape of the lid round portion 25 match, but as described above, it is not necessarily complete. Does not need to match. An important configuration in this state is that the lid and the reverse taper surface 26 engage with the reverse taper surface 10 of the container body 1 so that they closely engage with each other. It is not necessary to strictly limit the length of the tapered surface 10 and the length of the lid reverse tapered surface 26. In addition, as shown in FIG. 4, by preventing the cut end 28 of the folded surface 27 formed on the lid 2 from exceeding the folded portion 11 formed on the container body 1, the lower peripheral edge of the lid 2 is formed. It is possible to prevent the lid from accidentally opening when the (cut end 28) accidentally hits a human hand.

  In the description of the present embodiment, the round portion 9 formed on the container body 1 and the reverse tapered surface 10 continuous with the round portion 9, the lid round portion 25 formed on the lid 2, and the lid reverse tapered surface 26 Is described on the premise that it is formed on the entire periphery of the container body 1 and the lid 2, but what is necessary is that the container body 1 and the lid 2 are closely engaged by these configurations. Therefore, the present invention intends to provide each of them intermittently at a corresponding position in the outer periphery, or to form one intermittently with respect to the entire periphery and the other with respect to the outer periphery.

  Next, a further embodiment of the engaging portion between the container main body 1 and the lid 2 will be described with reference to FIGS. 5 and 6, and portions denoted by the same reference numerals as those in the previous embodiment indicate the same portions. The configuration differs from the previous embodiment in that the folded portion 11 of the container body 1 is constituted by a vertical folded portion 11a vertically falling from the lower end of the reverse tapered surface 10 and a horizontal folded portion 11b. The basic functions are the same as those of the previous embodiment. Here, the undercut depth D of the reverse taper surface 10 of the container body 1 and the reverse taper surface 26 of the lid is set to 0.5 to 4.0 mm, and the respective reverse taper surfaces 10 and 26 are perpendicular to each other. Set to 30 to 90 degrees. Here, 90 degrees substantially corresponds to folding, but it is preferable that the folded portions do not completely overlap each other without gaps, but are in a state where gaps are present. Therefore, it is exactly less than 90 degrees. As described above, in order to deepen the undercut, a slide core is used for a mold used for sheet molding. If the depth D is smaller than 0.5 mm, the lid is likely to come off similarly to the conventional problem. On the other hand, if the depth D is too deep, it is necessary to apply extra force when opening the lid. In this example, the depth D is set as described above. As for the depth D, the depth of the inverted tapered surface 10 and the depth of the lid inverted tapered surface 26 may be completely matched, but by making the depth of the lid inverted tapered surface 26 sufficiently large, the inverted It may be relatively shorter in extension length than tapered surface 10, ie, somewhat shallower. When the taper angle is smaller than 30 degrees, the reverse taper surface 10 becomes too high to increase the depth D, so that the stacking property of the container main body is deteriorated, and the tape to the transport box during transport is deteriorated. We cannot increase the quantity. Therefore, the angle is set to an angle exceeding 30 degrees.

  Next, FIG. 7 is a cross-sectional view of a main part showing a structure for securely and easily opening the lid of the present invention, and shows a case where the container body 1 and the lid 2 are in a closed state. The container body 1 and the lid 2 are closed by external fitting as shown in FIGS. A flange surface 31 is formed in a circumferential shape on the outer peripheral portion of the container body 1, and a peripheral wall 32 falls down in a substantially vertical direction from the flange surface 31 to form a fitting receiving surface formed in an inward annular shape. are doing. A receiving piece 34 protrudes from a part of the lower surface of the peripheral wall 32 via an arc-shaped connecting portion 33. Further, the protruding portion 35 seen on the tip side of the receiving piece 34 is formed so as to surround the receiving piece 34 except for the outer periphery of the container body 1. On the other hand, a flange portion 35 corresponding to the flange surface 31 of the container body 1 is also formed on the lid 2, and an annular fitting convex portion 37 is formed on the downward wall surface 36 from the flange portion 35, and the fitting of the container body 1 is performed. The fitting convex portion 37 of the lid 2 is configured to be externally fitted to the receiving surface. Numeral 38 denotes a knob bulging outward from a part of the outer periphery of the lid 2, and is accommodated inside the projection 35 of the receiving piece 34 of the container body 1 when the lid is closed. Reference numeral 39 denotes a number of fine irregularities provided on the surface of the knob 38 as appropriate. The height of the protrusion 35 is set to be higher than the thickness of the knob 38. In this case, the knob 38 does not protrude from the protruding portion 35, and a finger or the like is not carelessly caught.

  FIG. 8 shows a state in which the knob 38 formed on the lid 2 is accommodated in the receiving surface 33 formed on the container body 1 when the lid is closed, and the same numbers as those in FIG. I have. In the present embodiment, the shape of the entire container is circular in a plan view. However, the shape of the entire container is not limited to a circle, and may be a rectangle, an ellipse, or a polygon such as a hexagon or an octagon. It does not affect.

  When the lid is closed in the packaging container configured as described above, the lid 2 is arranged to correspond to the container main body 1, and the knob 38 of the lid 2 corresponds to the receiving piece 34 of the container main body 1. The rotation position is set, and the lid is closed in the same manner as a normal outer fitting container. After the lid is once closed, the knob 38 is housed at a position lower than the protruding portion 35 formed around the receiving piece 34. Therefore, when no force is applied, the knob 38 is moved to the finger. It won't catch you. Next, in the case of opening the lid, when a downward force is first applied to a part of the receiving piece 34 of the container body 1, preferably to the tip of the protruding portion 35, the receiving piece 34 is easily connected via the connecting portion 33. Deforms in a direction that bends downward. Then, the knob 38 of the cover 2 is relatively detached from the receiving piece 34 due to this deformation, and the knob 38 can be sandwiched between the fingers. Next, the knob 38 is secured with the finger of one hand, and the receiving piece 34 is secured with the finger of the other hand, and the lid can be easily opened by pulling them apart in the opening direction.

  In the present embodiment, the receiving piece 34 formed on the container body 1 is formed via the connecting portion 33 in order to facilitate deformation, but if the receiving piece 34 can be deformed downward with a small force. The connecting portion 33 may be omitted. In addition, the essential configuration of the present invention is that the knob 38 does not protrude from the outer periphery of the receiving piece 34. Therefore, it is not necessary to make the outer shape of the knob 38 and the outer shape of the receiving piece 34 similar to each other. The shape portion 35 may be omitted as necessary. Further, in the present embodiment, the case where the knob is formed on the lid and the receiving piece is formed on the container body has been described.On the contrary, the knob is formed on the container body and the receiving piece is formed on the lid. Are also included in the scope of the present invention.

  The knob 38 and the receiving piece 34 are provided with a large number of fine irregularities 39 as needed. However, when water drops or the like enter between the knob 38 and the receiving piece 34, the water droplets adhere to each other exactly. One of the purposes is to avoid things. For example, if molding is performed so as to form a gap between the knob portion 38 and the receiving piece 34, the unevenness 39 may be omitted. However, it is preferable to provide the unevenness 39 when anti-slip is expected when picked with a finger. The shape of the unevenness 39 is not particularly limited, but may be any shape that can exhibit its function, such as a knurled shape, a dot shape, and a number of stripes.

  By the way, as shown in FIGS. 8 and 10, in this embodiment, both ends of the protruding portion 35 are continuously inclined downward gradually to the receiving piece 34. With this configuration, even when the position of the container body 1 and the position of the lid 2 are shifted during the closing operation, the container body 1 and the lid 2 are rotated to each other to adjust the knob 38 to the correct position of the receiving piece 34. Can rotate smoothly because of the presence of Conversely, once the positioning has been performed, the knob portion 38 is restricted by the inner wall of the protruding portion 35, so that even when a force in the rotation direction acts, it does not rotate carelessly. However, these relations work in the case of a circular shape or the like in which the fitting portion between the container body 1 and the lid 2 fits at any angle in the rotation direction.

REFERENCE SIGNS LIST 1 container main body 2 lid 8 lid fitting flange 9 round portion 10 inverted taper surface 11 folded portion 24 lid flange portion 25 lid round portion 26 lid inverted tapered surface 27 folded surface 34 receiving piece 35 projecting portion 35 flange Part 37 Fitting convex part 38 Knob part 39 Irregularity

Claims (4)

A sheet-shaped packaging container comprising a container body and a lid, wherein the container body has a bottom surface, a wall surface rising from the periphery of the bottom surface, and a lid fitting flange portion directed outward with respect to the wall surface. A reverse tapered surface is provided from the lid fitting flange portion via a round portion, and a folded portion is further provided outward from the reverse tapered surface, while the lid is provided with a top plate and the top plate. A lid wall that continues downward from the peripheral edge of the plate, a lid flange that expands outward from the lower edge of the lid wall, and a lid that extends from the lid flange through a lid radius part An inverted tapered surface is provided, and the folded surface is further extended outward from the inverted tapered surface, and the depth of the lid inverted tapered surface corresponds to the depth of the inverted tapered surface of the container body. The cut end of the folded surface of the lid is The tip end position of the cut end does not exceed the outer periphery of the folded portion of the container body, and the tip end position of the cut end is located outside the position where the lid round portion starts from the lid flange portion, and further, the lid A knob swelling outward from a part of the body cut end or the outer periphery of the folded portion of the container body is formed, while a receptacle corresponding to the knob portion is formed on a part of the outer periphery of the container body or the lid. A packaging container, wherein a piece is bulged, the receiving piece is deformable along the outer circumference of the container body, and has a larger outer circumference than the outer circumference of the knob. The packaging container according to claim 1, wherein the knob is flat. 3. The receiving piece according to claim 1, wherein a flat surface corresponding to the knob portion, and a protruding portion having a thickness higher than the thickness of the knob portion are formed in a portion of the outer peripheral portion of the flat surface excluding the outer peripheral edge of the container body. Packaging containers. The packaging container according to any one of claims 1 to 3, wherein a large number of fine irregularities are formed on a plane of the knob and / or a plane corresponding to the knob of the receiving piece.

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