JP5462347B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container composed of a container body and a lid formed from a synthetic resin sheet, and in particular, the fitting bodies are fitted to each other by fitting protrusions formed on the container body and the lid in order to prevent liquid leakage. The present invention relates to a packaging container.

  A packaging container comprising a container body and a lid molded from a synthetic resin sheet can be easily confirmed at a low cost by using a transparent synthetic resin sheet, and can be manufactured at low cost. Various things have been proposed because it is convenient to completely maintain the sealed state of the stuffed body. In this case, for example, when packaging a product with a large amount of juice such as boiled vegetables as a stored item, it is necessary to prevent the juice (liquid) from coming out easily.

  As a conventional packaging container which prevents the liquid from coming out, there is a “fitting container” as proposed in Patent Document 1, for example. In this conventional fitting container, as described in the claims of the above-mentioned publication, “the cross-sectional shape of the hollow ridge 35 is formed from the rim 35a and the substantially circular bulging portion 35b provided at the tip thereof. The connecting portion between the rim 35a and the bulging portion 35b is a constricted portion 35c, the hollow concave strip 45 is substantially similar to the hollow convex strip 35, and at least the bulging portions are elastically pressed against each other. It has a shape as shown in FIG. By fitting such a hollow groove 45 to the hollow protrusion 35, it is possible to prevent the juice from the sugar beet stored in the container body from leaking outside. That is, this conventional packaging container mechanically engages with each other using the hollow ridges 45 and the hollow ridges 35 as described above after the side dish or the like is stored in the container body. It is.

  However, the conventional fitting container shown in FIG. 10 has a problem that the container main body and the lid cannot be stacked well. In other words, since this type of packaging container mechanically packs the contents, the container body is the container body, and the lid body is previously stacked in large quantities with the lid body. The hollow ridges 45 or the hollow ridges 35 overlap each other. As shown in FIG. 10, the hollow ridges 45 and the hollow ridges 35 have an arcuate cross-sectional shape as viewed in the direction perpendicular to the axis thereof. It is difficult to do in a stable state.

  If stacking is not stable, for example, the whole of a large number of container bodies that are stacked up may incline or fall over. In such a state, each container body cannot be mechanically taken out, and the stuffing operation must be stopped on the spot.

  In other words, the fitting ridges in the conventional packaging container shown in FIG. 10 are of the same shape in both the upper and lower sides, so that they will inevitably come into point (line) contact and lack stability. It ends up. That is, since the synthetic resin material originally has a small coefficient of friction, if the point (line) contact is made when stacking is performed, the coefficient of friction becomes very small and it becomes easy to slip.

  Therefore, the present applicants and the like are able to perform stacking in a stable state before filling the contents, on the premise that arc-shaped fitting protrusions are used to prevent liquid leakage. Various proposals have been made on how to do this, and proposals as shown in Patent Document 2 have been made.

Patent No. 2790794 Patent No. 3096772

As shown in FIG. 11, the “packaging container” described in Patent Document 2
“It consists of a main body 10A and a lid body 10B formed from a synthetic resin sheet, and is fitted inside by fitting together the circumferential annular fitting protrusions 11a and 11b formed on the main body 10A and the lid body 10B. In a packaging container that prevents liquids from leaking outside,
When the fitting ridges 11a and 11b are viewed in a cross-section in a direction orthogonal to the axis thereof, the lower ridge portion 13 that first rises in a substantially C shape from the base surface 12 of the main body 10A or the lid body 10B; With the upper ridge 14 formed at the upper end of the lower ridge 13 and closed at the upper end,
Furthermore, the inner diameter of the lower ridge 13 is substantially the same as the outer diameter of the upper ridge 14 ”.
It is.

  According to the “packaging container” of Patent Document 2, the container body 10A and the lid body 10B before filling the contents can be stacked in a stable state, and the filling operation can be performed without any trouble. It was possible to provide a packaging container with a simple structure that can prevent the juice from leaking out after stuffed with a savory side dish.

  Moreover, about the packaging container of this patent document 2, by making each cross-sectional shape of upper side and lower side protrusion part 13 * 14 into circular arc shape, in addition to the said effect, liquid-tightness is further improved, It was possible to provide a packaging container that can further prevent the juice from leaking out after the savory side dish is packed.

  However, the inventors have studied the “packaging container” of Patent Document 2 later, and when the lid is removed from the container body, the lid body is fitted to the container body. Even turned out to require a great deal of power. In other words, for example, it has been found that there is a difficulty that an elderly person living alone, who has weak power, has purchased a side dish using the packaging container and cannot easily remove the lid at home.

  Conversely, if the packaging container can be in a “strong fitting state”, a large amount of force is applied when the lid is fitted to the container body by packing storage items such as sugar beet. It has been found that there is a problem that a “dent” is generated in a part of the area. This is because synthetic resin sheets in recent years have become very thin in order to facilitate disposal of containers and the like formed thereby, and sheet-formed packaging containers have also become thinner. Therefore, it has become a more spurred phenomenon.

  Therefore, the present inventor can easily fit the container body as well as the lid body while securing the “sealing” between the container body and the lid body in the fitted state in this type of packaging container. As a result of various investigations on how to do so, it is sufficient to ensure the sealing property only at the “inner side” of the fitting portion, and for the “outer side”, it is rather possible to loosen the fitting. He realized that he produced good results and completed the present invention.

  The present invention has been made on the basis of the circumstances as described above, and the problem to be solved is that it is possible to prevent liquid leakage, and it is natural to fit and remove the lid from the container body. It is an object of the present invention to provide a packaging container with a simple structure that can be easily performed even by a weak person and that does not form a dent in the container body, particularly at the time of fitting.

In order to solve the above problems, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the best mode described below.
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusion 21 of the container body 20 is viewed in a cross section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first rise in a substantially C shape from the base surface 22 of the container body 20; The leg portions 25 and 25 are formed at the upper ends of the lower base portions 23 and 23, respectively, and the protrusions 24 are formed at the upper ends of the leg portions 25 and 25 and the upper ends are closed. ,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis, the bottom rises in parallel with the lower base portion 23 inside the container body side 20 from the base surface 12 of the lid body 10. The side base portion 13, the leg portion 15 a formed at the upper end of the lower base portion 13, and the base body 12 of the lid body 10 are inclined to the outside and rise up. An inclined portion 15 that contacts the lower side and serves as a resistance at the time of fitting operation, and is formed at the upper end of the inclined portion 15 and the leg portion 15a of the lid body 10, the upper end is closed, and the ridge portion of the container body 20 24 and the ridge 14 fitted to 24,
When the fitting ridges 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side replaces the ridge portion 24 of the container body 20 with the ridge portion 14 on the lid body 10 side. A packaging surface characterized in that a space can be formed between the inclined portion 15 and the outer leg portion 25 of the container body 20 when the fitting is completed. A container.

  That is, in the packaging container according to the first aspect of the present invention, as shown in FIGS. 3 to 7, first, the fitting protrusion 21 of the container body 20 is seen in a cross-section in a direction perpendicular to the axis. The inner base and lower lower bases 23, 23 that first rise from the base surface 22 of the container body 20 in a substantially C shape, and leg portions 25, 25 formed at the upper ends of the lower bases 23, 23, respectively. The leg portions 25 are formed at the upper ends of the leg portions 25 and 25, and are formed with the ridge portions 24 whose upper ends are closed. The point relating to the fitting protrusion 21 of the container body 20 is the same as that of the packaging container proposed in Patent Document 2.

  Moreover, in the packaging container which concerns on this invention concerning this Claim 1, as shown in FIGS. 3-7, when seeing the protrusion 11 for fitting of the cover body 10 in the cross section orthogonal to the axis line A lower base 13 that rises in parallel with the lower base 23 on the inner side of the container body 20 from the base surface 12 of the lid 10, a leg portion 15 a formed at the upper end of the lower base 13, and the lid 10 is formed on the upper end of the inclined portion 15 and the leg portion 15a of the lid body 10 so that the upper end is closed, and the ridge portion 24 of the container body 20 is formed. It is comprised with the protrusion part 14 fitted by.

  That is, in the fitting protrusion 11 of the lid body 10 according to the present invention (1), the inner part is the same as in the case of the above-mentioned Patent Document 2 when viewed in a cross-section in a direction orthogonal to the axis, As shown in FIGS. 5 to 7, only the outer portion is formed with an inclined portion 15 that is inclined and rises outward from the base surface 12 of the lid body 10. At the upper end of the inclined portion 15, a ridge portion 14 is formed which is continuously closed at the upper end of the leg portion 15 a of the lid body 10 and is fitted to the ridge portion 24 of the container body 20. It is.

  In the packaging container according to the first aspect of the present invention, the fitting for integrating the lid body 10 with the container main body 20 is performed by the fitting protrusions 21 and 11 formed on both sides, respectively. The fitting for preventing leakage of the liquid generated from the stored items in the container body 20 is performed by the inner portions of the fitting protrusions 21 and 11.

  First, as shown in FIGS. 5 to 7, the inner portion (the left portion of the center line L in the figure) of the fitting protrusions 21 and 11 is fitted onto the base surface 22 on the container body 20 side. The base surface 12 on the lid body 10 side is completely placed, and the lower base parts 23 and 13, the leg parts 25 and 15 a, and the projecting parts 24 and 14 of the container body 20 and the lid body 10 are completely in close contact with each other. It is done in a state of mutual contact. In other words, the fitting of the fitting protrusions 21 and 11 at the left side portion of the center line L in the drawing is performed in a state where the container body 20 and the lid 10 are in close contact with each other. In addition, the close contact portion prevents leakage of liquid from the inside.

  On the other hand, as shown in FIGS. 5 to 7, the fitting of the outer portion (the right side portion of the center line L in the figure) of the fitting protrusions 21 and 11 is performed on the base surface on the container body 20 side. Although the base surface 12 on the side of the lid 10 and the protrusions 24 and 14 are completely in close contact with each other, there is a space between the leg portion 25 of the container body 20 and the inclined portion 15 of the lid 10. Are formed and are not completely in close contact with each other. Of course, a leg portion like the leg portion 25 on the container body 20 side does not exist on the right side portion (outer portion) of the fitting protrusion 11 of the lid body 10, and the inclined portion 15 is formed.

  Thus, the fact that there is a space in the right side of the center line L of the fitting protrusions 21 and 11 at the time of fitting means that the lid body 10 is fitted to the container body 20 as a matter of course. When the lid 10 is removed from the container main body 20, it means that almost no resistance is generated.

  That is, when the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side causes the protrusion 24 on the container body 20 to be on the lid body 10 side. This is a guide surface for guiding into the ridge 14, and when fitting is completed, a space is formed between the inclined portion 15 on the lid 10 side and the outer leg portion 25 on the container body 20 side. In order to prevent them from sticking together.

  When the container body 20 is stacked and the lid body 10 is stacked, the protrusion 14 of the lower lid 10 enters into the base 13 of the upper lid 10 for example. In other words, they are in surface contact with each other, and this ensures stability during stacking. That is, the container body 20 and the lid body 10 constituting the packaging container are formed of a synthetic resin sheet having a small friction coefficient, but the protrusions 14 and 24 are placed in the lower base parts 13 and 23. Since it slips into each other, it is possible to prevent each other's slipping, and each stacking can be performed stably.

  In addition, when each fitting of the container main body 20 and the lid body 10 is completed, a space can be formed between the inclined portion 15 and the outer leg portion 25 on the container main body 20 side. This means that a “way” through which the air in the main body 20 is released is secured, and the fitting operation is further facilitated. On the contrary, this space means that when removing the lid body 10 from the container body 20, it means that a “way” for allowing air from the outside to enter the container body 20 is secured. It is.

  Therefore, according to the packaging container according to the first aspect of the invention, it is possible to prevent liquid leakage, and it is easy for even a person with weak power to fit and remove the lid 10 from the container body 20. In addition, a recess is not formed in the container body 20 particularly during fitting.

In order to solve the above-mentioned problem, the means taken by the invention according to the present invention (2)
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusions 21 of the container body 21 are viewed in a cross-section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first stand up in an inverted C shape from the base surface 22 of the container body 20; And the ridge 24 formed at the upper ends of the lower bases 23, 23 and closed at the upper ends,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis, the bottom rises in parallel with the lower base portion 23 inside the container body side 20 from the base surface 12 of the lid body 10. A side base 13, an inclined part 15 that rises outward from the base surface 12 of the lid 10, and an upper end of the inclined part 15 and the lower base 13 of the lid 10 are closed and the upper end is closed. The ridge portion 14 is fitted to the ridge portion 24 of the container body 20, and
When the fitting ridges 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side replaces the ridge portion 24 of the container body 20 with the ridge portion 14 on the lid body 10 side. A packaging surface characterized in that a space can be formed between the inclined portion 15 and the lower base 23 on the outside of the container body 20 when the fitting is completed. container"
It is.

  That is, the packaging container according to the present invention (2) is different from that of the above-mentioned claim 1 in the following two points, as shown in FIG. Is. For this reason, about the member substantially the same as that of the said Claim 1 of this packaging container concerning this invention (2), the code | symbol same as demonstrated in Claim 1 is attached | subjected in FIG. The description is omitted.

  The first aspect of the packaging container according to the present invention (2) is different from that of the first aspect described above. First, as shown in FIG. When viewed in a cross-section in the orthogonal direction, the inner and outer lower bases 23 and 23 that first rise up from the base surface 22 of the container body 20 in an inverted C shape are provided. The fact that the inner and outer lower bases 23 and 23 are “inverted C-shaped” means that they are completely opposite to the “substantially C-shaped” in the case of claim 1. Yes.

  As shown in FIG. 8, the inner and outer lower bases 23 and 23 are “inverted C-shaped”, and as shown in FIG. The lower base 23 forms a “locking portion” for the fitting protrusion 11 of the lid body 10. For this reason, in this container main body 20, since the lower base parts 23 and 23 inside and outside are "inverted C shape", each fitting protrusion 21 * 11 of the container main body 20 and the cover body 10 is mutually fitted. After being combined, as shown in FIG. 8B, the container body 20 is covered with a lid while allowing a space to be formed between the inclined portion 15 and the lower base 23 on the container body 20 side. 10 can be securely fitted or locked.

  A second difference of the packaging container according to the present invention (2) from the above-mentioned claim 1 is that the fitting protrusion 11 of the lid 10 is connected to the base of the lid 10 as shown in FIG. A lower base 13 that rises in parallel with the lower base 23 on the inner side of the container body side 20 from the surface 12, an inclined portion 15 that rises outward from the base surface 12 of the lid 10, and the inclined portion 15 and This is formed by the ridge portion 14 formed at the upper end of the lower base portion 13 of the lid body 10 and closed at the upper end, and fitted into the ridge portion 24 of the container body 20.

  In other words, the leg portion 15a included in the packaging container of claim 1 is not included in the packaging container of the present invention (2), and the protrusion 14 is inclined outward. It is formed directly at the upper ends of the inclined portion 15 that rises and the lower base portion 13. Thereby, in this packaging container of this invention (2), as shown to (a) and (b) of FIG. 8, each fitting protrusion 21 * 11 of the container main body 20 and the cover body 10 is mutually fitted. In this case, in the right side portion shown in FIG. 8, the inclined portion 15 on the lid body 10 side becomes a guide surface for guiding the ridge portion 24 of the container body 20 into the ridge portion 14 on the lid body 10 side.

  On the other hand, in the left side portion of the packaging container shown in FIG. 8, the lower base portion 23 on the left side of the container body 20 forms a “locking portion”, and the lower side of the lid body 10. The base portion 13 is firmly locked, and the lid body 10 is firmly fitted or locked to the container body 20.

  As a result, in the packaging container of the present invention (2), when the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side is It becomes a guide surface which guides the protrusion 24 of the main body 20 into the protrusion 14 on the lid 10 side, and when fitting is completed, between the inclined portion 15 and the lower base 23 on the outside of the container main body 20. A space is formed.

  Further, in the packaging container of the present invention (2), the fitting of the inner portions of the fitting ridges 21 and 11 is performed on the base surface 22 on the container body 20 side as shown in FIG. In the state where the base surface 12 on the lid body 10 side is completely placed on the container body 20 and the lower base parts 23 and 13 and the projecting parts 24 and 14 of the container body 20 and the lid body 10 are completely in contact with each other. Done. In other words, the fitting of the left and right portions of the fitting protrusions 21 and 11 is performed in a state where the container body 20 and the lid body 10 are in close contact with each other. This prevents leakage of liquid to the outside.

  On the other hand, as shown in FIG. 8B, the fitting of the outer portions of the fitting protrusions 21 and 11 is performed on the base surface 22 on the lid body 10 side on the base surface 22 on the container body 20 side. Although the protrusions 24 and 14 are completely in close contact with each other, a space is formed between the lower base portion 23 of the container body 20 and the inclined portion 15 of the lid 10 so that the protrusions 24 and 14 are in close contact with each other. It doesn't fit. Of course, the leg portion does not exist in the right side portion of the fitting protrusion 11 of the lid body 10, and the inclined portion 15 is formed.

  Thus, the fact that there is a space in the right portion of the fitting protrusions 21 and 11 at the time of fitting means that the lid 10 is fitted to the container body 20 as well as the container body 20. This means that almost no resistance is generated when the lid 10 is removed.

  In addition, when each fitting of the container body 20 and the lid body 10 is completed, a space can be formed between the inclined portion 15 and the lower base 23 on the container body 20 side. This means that a “way” through which the air in the main body 20 is released is secured, and the fitting operation is further facilitated. On the contrary, this space means that when removing the lid body 10 from the container body 20, it means that a “way” for allowing air from the outside to enter the container body 20 is secured. It is.

  Therefore, according to the packaging container of the present invention (2), it is possible to prevent liquid leakage, and it is easy for even a person with weak power to fit and remove the lid 10 from the container body 20. In addition, a recess is not formed in the container body 20 particularly during fitting.

Moreover, the means taken by the invention according to the present invention (3) is the packaging container of the above-mentioned claim 1 or the present invention (2),
“The inclined portion 15 on the lid 10 side is partially formed in the circumferential direction of the fitting protrusion 11”.
It is.

  That is, in the packaging container according to the present invention (3), the inclined portion 15 on the lid 10 side is partially formed in the circumferential direction of the fitting protrusion 11, and this inclined portion 15 exists. The above-described space is positively formed only for the portion. Of course, the lower base portion 13 may be formed instead of the inclined portion 15 except for the portion where the inclined portion 15 exists.

  Therefore, in the packaging container according to the present invention (3), the lid body 10 is fitted to the container body 20 in the portion of the packaging container according to claim 1 or the present invention (2) where the inclined portion 15 exists. It is possible to weaken the force for performing removal and removal, and it is easy to use.

In order to solve the above problem, the means taken by the invention according to the present invention (4) are as follows:
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusions 21 of the container body 21 are viewed in a cross-section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first stand up in an inverted C shape from the base surface 22 of the container body 20; An inclined portion 26 that is formed at the upper end of the outer lower base 23 and rises while being inclined, and a ridge portion 24 that is formed at the upper end of the inclined portion 26 and is closed at the upper end,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis thereof, the lid body 10 is parallel to the lower base portions 23 and 23 on the container body side 20 from the base surface 12 respectively. The lower bases 13 and 13 that stand up, and the ridges 14 that are formed at the upper ends of these lower bases 13 and are closed at the upper ends and fitted into the ridges 24 of the container body 20,
When the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined part 26 on the container body 20 side is connected to the protrusion part 24 of the container body 20 on the lid body 10 side. 14 so that a space can be formed between the inclined portion 26 on the container body 20 side and the lower base portion 13 outside the lid body 10 when the fitting is completed. Packaging container characterized by that "
It is.

  That is, as shown in FIG. 9, the packaging container according to the present invention (4) is different from that of the above-mentioned claim 1 in the following two points, and other parts are the same as those of the above-mentioned claim 1. Is. For this reason, about the member substantially the same as that of the said Claim 1 of this packaging container concerning this invention (4), the code | symbol same as demonstrated in Claim 1 is attached | subjected in FIG. The description is omitted.

  The first aspect of the packaging container according to the present invention (4) is different from that of the first aspect described above. First, as shown in FIG. When viewed in a cross-section in the orthogonal direction, the lower base portions 13 and 13 rising in parallel with the lower base portions 23 and 23 on the container body side 20 from the base surface 12 of the lid body 10, and the lower base portions 13 That is, the upper end is closed at the upper end, and the protrusion 14 is fitted into the protrusion 24 of the container body 20. That is, in the packaging container according to the present invention (4), the fitting protrusion 11 is symmetrical when viewed in a cross section in a direction orthogonal to the axis. The inclined portion 15 described in the invention is not provided.

  That is, in the packaging container of the present invention (4), the fitting of the inner portions of the fitting ridges 21 and 11 is performed on the base surface 22 on the container body 20 side as shown in FIG. In the state where the base surface 12 on the lid body 10 side is completely placed on the container body 20 and the lower base parts 23 and 13 and the projecting parts 24 and 14 of the container body 20 and the lid body 10 are completely in contact with each other. Done. In other words, the fitting of the fitting protrusions 21 and 11 at the left side portion in FIG. 9 is performed in a state where the container body 20 and the lid body 10 are in close contact with each other. The portion prevents leakage of liquid from the inside out.

  Further, the second point of the packaging container according to the present invention (4) which is different from that of the above-mentioned claim 1 is that, as shown in FIG. Inner and outer lower bases 23 and 23 that first stand up from the base surface 22 in an inverted C shape, an inclined part 26 that is formed at the upper end of the outer lower base 23 and rises while being inclined, and the inclined part 26 It is comprised with the protrusion 24 formed in the upper end of this, and the upper end was closed.

  First, the inner and outer lower bases 23 and 23 are first raised in a reverse C shape from the base surface 22 of the container body 20, so that the inner and outer lower bases 23 and 23 are parallel to the inner and outer lower bases 23 and 23, respectively. The lower bases 13 and 13 rising to the bottom, that is, the fitting can be performed equally inside and outside, and the fitting protrusions 21 and 11 are securely fitted to each other.

  And by forming the inclined part 26 at the upper end of the outer lower base 23, in the packaging container of the present invention (4), the fitting ridges 21 and 11 of the container body 20 and the lid 10 are provided. When they are fitted to each other, the lower base 13 on the outer side of the lid 10 is guided by the inclined portion 26 of the container body 20, and the protrusion 24 on the container body 20 side is in the protrusion 14 on the lid 10 side. It is guided smoothly. That is, the inclined portion 26 on the container body 20 side serves as a guide surface for guiding the lower base 13 on the outer side on the lid 10 side as shown in FIG. As shown in (b), a space is formed between the lower base portion 13 on the lid 10 side and the inclined portion 26 on the container body 20 side.

  Thus, the fact that there is a space in the right portion of the fitting protrusions 21 and 11 at the time of fitting means that the lid 10 is fitted to the container body 20 as well as the container body 20. This means that almost no resistance is generated when the lid 10 is removed.

  Further, when each fitting of the container body 20 and the lid body 10 is completed, a space can be formed between the lower base portion 13 on the lid body 10 side and the inclined portion 26 on the container body 20 side. This means that a “way” for releasing the air inside the container body 20 during the fitting operation is secured, and the fitting operation is further facilitated. On the contrary, this space means that when removing the lid body 10 from the container body 20, it means that a “way” for allowing air from the outside to enter the container body 20 is secured. It is.

  Therefore, according to the packaging container of the present invention (4), it is possible to prevent liquid leakage, and it is easy for even a person with weak power to fit and remove the lid 10 from the container body 20. In addition, a recess is not formed in the container body 20 particularly during fitting.

Further, the means taken by the invention according to the present invention (5) is the packaging container of the present invention (4).
“The inclined portion 26 on the container body 20 side is partially formed in the circumferential direction of the fitting protrusion 21”.
It is.

  That is, in the packaging container according to the present invention (5), the inclined portion 26 on the container body 20 side is partially formed in the circumferential direction of the fitting protrusion 21, and the inclined portion 26 exists. The above-described space is positively formed only for the portion.

  Therefore, in the packaging container according to the present invention (5), the lid body 10 is fitted to or removed from the container body 20 in the portion of the packaging container according to the present invention (4) where the inclined portion 26 exists. The force can be weakened and it is easy to use.

As described above in detail, in the invention according to claim 1, as exemplified in the above embodiment,
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusion 21 of the container body 20 is viewed in a cross section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first rise in a substantially C shape from the base surface 22 of the container body 20; The leg portions 25 and 25 are formed at the upper ends of the lower base portions 23 and 23, respectively, and the protrusions 24 are formed at the upper ends of the leg portions 25 and 25 and the upper ends are closed. ,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis, the bottom rises in parallel with the lower base portion 23 inside the container body side 20 from the base surface 12 of the lid body 10. The side base portion 13, the leg portion 15 a formed at the upper end of the lower base portion 13, and the side base 13 of the lid body 10 are inclined to rise outward from the base surface 12. An inclined portion 15 that contacts the lower side and serves as a resistance at the time of fitting operation, and is formed at the upper end of the inclined portion 15 and the leg portion 15a of the lid body 10, the upper end is closed, and the ridge portion of the container body 20 24 and the ridge 14 fitted to 24,
When the fitting ridges 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side replaces the ridge portion 24 of the container body 20 with the ridge portion 14 on the lid body 10 side. The guide surface is guided inward, and when fitting is completed, a space can be formed between the inclined portion 15 and the outer leg portion 25 of the container main body 20. "
In the invention according to the present invention (2),
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusions 21 of the container body 21 are viewed in a cross-section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first stand up in an inverted C shape from the base surface 22 of the container body 20; And the ridge 24 formed at the upper ends of the lower bases 23, 23 and closed at the upper ends,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis, the bottom rises in parallel with the lower base portion 23 inside the container body side 20 from the base surface 12 of the lid body 10. A side base 13, an inclined part 15 that rises outward from the base surface 12 of the lid 10, and an upper end of the inclined part 15 and the lower base 13 of the lid 10 are closed and the upper end is closed. The ridge portion 14 is fitted to the ridge portion 24 of the container body 20, and
When the fitting ridges 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side replaces the ridge portion 24 of the container body 20 with the ridge portion 14 on the lid body 10 side. The guide surface is guided inward, and when fitting is completed, a space can be formed between the inclined portion 15 and the lower base 23 on the outer side of the container body 20 ".
In the invention according to the present invention (4),
“The container body 20 is formed from a synthetic resin sheet, and the lid body 10. The fitting protrusions 21, 11 formed on the container body 20 and the lid body 10 are fitted to each other to be housed inside. In a packaging container that prevents liquid from being stored from leaking outside,
When the fitting protrusions 21 of the container body 21 are viewed in a cross-section in a direction perpendicular to the axis thereof, the inner and outer lower bases 23 and 23 that first stand up in an inverted C shape from the base surface 22 of the container body 20; An inclined portion 26 that is formed at the upper end of the outer lower base 23 and rises while being inclined, and a ridge portion 24 that is formed at the upper end of the inclined portion 26 and is closed at the upper end,
When the fitting protrusion 11 of the lid body 10 is viewed in a cross-section in a direction orthogonal to the axis thereof, the lid body 10 is parallel to the lower base portions 23 and 23 on the container body side 20 from the base surface 12 respectively. The lower bases 13 and 13 that stand up, and the ridges 14 that are formed at the upper ends of these lower bases 13 and are closed at the upper ends and fitted into the ridges 24 of the container body 20,
When the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined part 26 on the container body 20 side is connected to the protrusion part 24 of the container body 20 on the lid body 10 side. 14 so that a space can be formed between the inclined portion 26 on the container body 20 side and the lower base portion 13 outside the lid body 10 when the fitting is completed. about"
There is a typical feature in the structure, and it is possible to prevent liquid leakage by this, and it is natural that even a person with weak power can easily fit and remove the lid 10 from the container body 20. In particular, at the time of fitting, a packaging container that does not form a recess in the container body 20 can be provided with a simple structure.

In the invention according to the present invention (3) or the present invention (5), the packaging container of the above-mentioned claim 1 or the present invention (2) and the present invention (4),
“The inclined portion 15 on the lid 10 side is partially formed in the circumferential direction of the fitting protrusion 11”.
Or
“The inclined portion 26 on the container body 20 side is partially formed in the circumferential direction of the fitting protrusion 21” has a structural feature, and thereby, the same effect as that of the invention according to claim 1. In addition, it is possible to provide a packaging container that can further enhance the liquid-tightness and prevent the juice from leaking further after stuffed with savory prepared food. is there.

  Next, each invention configured as described above will be described based on the best packaging container shown in the drawings. However, the best packaging container substantially includes the above inventions. The following description will focus on the best packaging container.

  1 and 2 are plan views of the lid body 10 and the container body 20 in which the present invention is implemented. The lid 10 and the container body 20 are so-called “sheet molding” made of a synthetic resin sheet. As shown in FIG. 3, a side wall and a bottom wall (in the case of the container body 20) having a predetermined depth. Or it has a top plate (in the case of the cover body 10). The lid 10 and the container body 20 shown in FIGS. 1 and 2 show a case where the overall planar shape is a “square”, but the present invention is not limited to this, and the entire planar surface is shown. The shape can be applied to other shapes such as “hexagon” and “octagon” as well as “round”.

  In this packaging container, as shown in FIGS. 3 to 7, the fitting ridges 21, 11 are formed on the respective base surfaces 22, 12, that is, portions generally called “flange”. The lid 10 can be so-called “internally fitted” to the container body 20 by these fitting protrusions 21 and 11.

  First, regarding the fitting protrusion 11 of the lid 10, as shown in the upper part of FIGS. 3 and 4, as shown in FIGS. 5 to 7, when viewed in a cross section perpendicular to the axis, In the left half of the center line L in the figure, that is, the inner portion of the packaging container, the lower base portion that rises in parallel with the lower base portion 23 on the inner side of the container main body 20 to be described later from the base surface 12 of the lid body 10. 13 and a leg portion 15a formed at the upper end of the lower base portion 13 are formed. In addition, in the right half of the center line L in the drawing, that is, the outer portion of the packaging container, an inclined portion 15 that is inclined and rises outward from the base surface 12 of the lid 10 is formed.

  Further, for example, the upper ends of the inclined portion 15 located on the right side of the drawing in FIG. 5 and FIG. The protrusion 14 to be joined is formed.

  The inclined portion 15 may be formed and implemented in any way as long as it is inclined outside the fitting protrusion 11, but is deformed according to the cross-sectional shape of the fitting protrusion 11. The For example, in the embodiment shown in FIGS. 5 and 6, the cross-sectional shapes of the lower base 13 and the projecting portion 14 and the lower base 23 and the projecting portion 24 on the container main body 20 side to be described later are circular. The inclined portion 15 is formed to be in a tangential direction with respect to the outside of the lower base portion 23 on the container body 20 side.

  In the embodiment shown in FIG. 5, the tip (upper end) of the inclined portion 15 is below the equator of the protrusion 24 on the container body 20 side (a line appearing when cut by a horizontal plane passing through the center of the sphere). The lower end is connected to the base surface 12 of the lid body 10. That is, in the embodiment shown in FIG. 5, the protruding portion 14 on the lid 10 side is guided by the inclined portion 15 when the protruding portion 24 on the container body 20 side is fitted therein. In addition, the outer portion of the projecting portion 14 and the portion below the equator serves as a resistance during the fitting operation.

  In the embodiment shown in FIG. 6, the tip (upper end) of the inclined portion 15 is located slightly above the equator of the protruding portion 24 on the container body 20 side (specifically, the outer tangent line of the protruding portion 14). The lower end is continuous with the base surface 12 of the lid body 10. That is, in the embodiment shown in FIG. 6, the protruding portion 14 on the lid 10 side is guided by the inclined portion 15 when the protruding portion 24 on the container body 20 side is fitted therein. This is the same as in the embodiment of FIG. 5, but the outer portion of the protrusion 14 does not serve as a resistance during the fitting operation.

  In the embodiment shown in FIG. 7, the lower base portion 13 and the projecting portion 14, and the lower base portion 23 and the projecting portion 24, which will be described later, enter the inside thereof. Although formed, the tip of the inclined portion 15 coincides with the upper surface of the protruding portion 14 (in the case of FIG. 7A), and the tip of the inclined portion 15 is an intermediate surface of the protruding portion 14. Two types of cases where they coincide (in the case of FIG. 7B) are shown, and it is common that the lower end of the inclined portion 15 coincides with the base surface 12.

  And as shown in FIGS. 3-7, the inner part of the protrusion 11 for fitting by the side of the cover body 10 is the base surface 12 of the said cover body 10, when it sees in the cross section in the direction orthogonal to the axis line. A lower base 13 that rises in parallel with the lower base 23 on the inside of the container main body side 20, a leg 15a formed at the upper end of the lower base 13, and an upper end formed at the upper end of the leg 15a. A ridge portion 14 that is closed and fitted to the ridge portion 24 of the container body 20 is formed.

  Of course, as shown in FIGS. 3 to 7, the inner portion of the fitting protrusion 21 has a lower base portion that rises from the base surface 22 of the container body 20 when viewed in a cross-section in a direction perpendicular to the axis. 23 and a ridge 24 formed at the upper end of the lower base 23 and closed at the upper end. As shown in FIGS. 5 and 6, the lower base 23 and the protrusion 24 may have a circular cross section as shown in FIGS. 5 and 6, or may be formed into a square cross section as shown in FIG. 7. It ’s good.

  The above-mentioned fitting protrusions 21 and 11 are formed at the same time when the container body 20 or the lid body 10 is formed of a synthetic resin sheet, but the cross-sectional shapes of the lower base 13 and the protrusion 14 are as follows. Is based on arcs or squares, so that so-called “die cutting” can be easily performed. In other words, the fitting ridges 21 and 11 can be easily fitted to each other, and sufficient airtightness for preventing liquid leakage can be secured at the inner portion.

  8 shows the packaging container according to the present invention (2), the packaging container shown in FIG. 8 is different from that of claim 1 in the following two points. The other parts are the same as those in the first aspect. For this reason, about the member substantially the same as that of the said Claim 1 of the packaging container which concerns on this invention (2), the code | symbol same as demonstrated in Claim 1 is attached | subjected in FIG. The description is omitted.

  The difference of the packaging container according to the present invention (2) from that of the first aspect is that, first, as shown in FIG. When viewed in a cross-section in a direction perpendicular to each other, the inner and outer lower base portions 23 and 23 that first rise in a reverse C shape from the base surface 22 of the container body 20 are provided. The fact that the inner and outer lower bases 23 and 23 are “inverted C-shaped” means that they are completely opposite to the “substantially C-shaped” in the case of claim 1. Yes.

  As shown in FIG. 8, the inner and outer lower bases 23 and 23 are “inverted C-shaped”, and as shown in FIG. Both lower bases 23 form “locking portions” for the fitting protrusions 11 of the lid body 10. For this reason, in this container main body 20, since the lower base parts 23 and 23 inside and outside are "inverted C shape", each fitting protrusion 21 * 11 of the container main body 20 and the cover body 10 is mutually fitted. After being combined, as shown in FIG. 8B, the container body 20 is covered with a lid while allowing a space to be formed between the inclined portion 15 and the lower base 23 on the container body 20 side. The body 10 can be securely fitted or locked.

  A second point different from that of the first aspect of the packaging container according to the present invention (2) shown in FIG. 8 is that the fitting protrusion 11 of the lid body 10 is moved from the base surface 12 of the lid body 10. A lower base 13 that rises in parallel with the lower base 23 on the inner side of the container body 20, an inclined part 15 that rises outward from the base surface 12 of the lid 10, and the inclined part 15 and the lid 10 is formed at the upper end of the lower base 13, the upper end is closed, and the ridge 14 is fitted into the ridge 24 of the container body 20.

  As a result, in the packaging container of the present invention (2), as shown in FIGS. 8A and 8B, the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other. 8, the inclined portion 15 on the lid body 10 side serves as a guide surface for guiding the ridge portion 24 of the container body 20 into the ridge portion 14 on the lid body 10 side. .

  On the other hand, in the left side portion of the packaging container shown in FIG. 8, the lower base portion 23 on the left side of the container body 20 forms a “locking portion”, and the lower side of the lid body 10. The base portion 13 is firmly locked, and the lid body 10 is firmly fitted or locked to the container body 20.

  As a result, in the packaging container of the present invention (2), when the fitting protrusions 21 and 11 of the container body 20 and the lid body 10 are fitted to each other, the inclined portion 15 on the lid body 10 side is It becomes a guide surface that guides the ridge 24 of the main body 20 into the ridge 14 on the lid 10 side, and when fitting is completed, there is a space between the inclined portion 15 and the lower base 23 on the container main body 20 side. It is formed.

  Further, in the packaging container of the present invention (2), the fitting of the inner portions of the fitting protrusions 21 and 11 is performed as shown in FIG. A state in which the base surface 12 on the lid body 10 side is completely placed thereon, and the container base body 20 and the lower base parts 23 and 13 and the projecting parts 24 and 14 of the lid body 10 are in close contact with each other. Done in In other words, the fitting of the left and right portions of the fitting protrusions 21 and 11 is performed in a state where the container body 20 and the lid body 10 are in close contact with each other. This prevents leakage of liquid to the outside.

  On the other hand, as shown in FIG. 8B, the fitting of the outer portions of the fitting protrusions 21 and 11 is performed on the base surface 22 on the lid body 10 side on the base surface 22 on the container body 20 side. 12 and the protrusions 24 and 14 are in close contact with each other, but a space is formed between the lower base portion 23 of the container body 20 and the inclined portion 15 of the lid body 10, so that they are in close contact with each other. They are not in contact with each other. Of course, the leg portion does not exist in the right side portion of the fitting protrusion 11 of the lid body 10, and the inclined portion 15 is formed.

  Thus, the fact that there is a space in the right portion of the fitting protrusions 21 and 11 at the time of fitting means that the lid 10 is fitted to the container body 20 as well as the container body 20. This means that almost no resistance is generated when the lid 10 is removed.

  In addition, when each fitting of the container body 20 and the lid body 10 is completed, a space can be formed between the inclined portion 15 and the lower base 23 on the container body 20 side. This means that a “way” through which the air in the main body 20 is released is secured, and the fitting operation is further facilitated. On the contrary, this space means that when removing the lid body 10 from the container body 20, it means that a “way” for allowing air from the outside to enter the container body 20 is secured. It is.

  FIG. 9 shows a packaging container according to the present invention (4). As shown in FIG. 9, the packaging container is different from that of the first aspect in the following two points, and the other parts are the same as those of the first aspect. For this reason, about the member substantially the same as that of the said Claim 1 of this packaging container concerning this invention (4), the code | symbol same as demonstrated in Claim 1 is attached | subjected in FIG. The description is omitted.

  The first aspect of the packaging container according to the present invention (4) is different from that of the first aspect described above. First, as shown in FIG. When viewed in a cross-section in a direction orthogonal to each other, the lower base portions 13 and 13 rising in parallel with the lower base portions 23 and 23 on the container body side 20 from the base surface 12 of the lid body 10, and these lower base portions 13, respectively. The upper end of the container body 20 is closed and the protrusion 14 is fitted to the protrusion 24 of the container body 20. That is, in the packaging container of the present invention (4), the fitting protrusion 11 is made to be bilaterally symmetric when viewed in a cross section in a direction orthogonal to the axis, and the inclined portion 15 Is not provided.

  That is, in the packaging container of the present invention (4), the fitting of the inner portions of the fitting ridges 21 and 11 is performed as shown in FIG. A state in which the base surface 12 on the lid body 10 side is completely placed thereon, and the container base body 20 and the lower base parts 23 and 13 and the projecting parts 24 and 14 of the lid body 10 are in close contact with each other. Done in In other words, the fitting of the fitting protrusions 21 and 11 at the left side portion in FIG. 9 is performed in a state where the container body 20 and the lid body 10 are in close contact with each other. The portion prevents leakage of liquid from the inside out.

  Further, the second point of the packaging container according to the present invention (4) which is different from that of the above-mentioned claim 1 is that, as shown in FIG. The inner and outer lower bases 23 and 23 that first rise in an inverted C shape from the base surface 22, the inclined part 26 that is formed at the upper end of the outer lower base 23 and that is inclined and rises outside, and the inclined part 26, and is formed by a protrusion 24 formed at the upper end of 26 and closed at the upper end.

  First, the inner and outer lower bases 23 and 23 are first raised in a reverse C shape from the base surface 22 of the container body 20, so that the inner and outer lower bases 23 and 23 are parallel to the inner and outer lower bases 23 and 23, respectively. The lower bases 13 and 13 rising to the bottom, that is, the fitting can be performed equally inside and outside, and the fitting protrusions 21 and 11 are securely fitted to each other.

  And by forming the inclined part 26 at the upper end of the outer lower base 23, in the packaging container of the present invention (4), the fitting ridges 21 and 11 of the container body 20 and the lid 10 are provided. When they are fitted to each other, the lower base 13 on the outer side of the lid 10 is guided by the inclined portion 26 of the container body 20, and the protrusion 24 on the container body 20 side is in the protrusion 14 on the lid 10 side. It is guided smoothly. That is, as shown in FIG. 9A, the inclined portion 26 on the container body 20 side becomes a guide surface for guiding the lower base 13 on the outer side on the lid 10 side, and when fitting is completed, As shown in (b), a space is formed between the lower base 13 on the lid 10 side and the inclined portion 26 on the container body 20 side.

  Thus, the fact that there is a space in the right portion of the fitting protrusions 21 and 11 at the time of fitting means that the lid 10 is fitted to the container body 20 as well as the container body 20. This means that almost no resistance is generated when the lid 10 is removed.

  Moreover, in the packaging container which concerns on this invention (5), the inclination part 26 by the side of the container main body 20 is partially formed in the circumferential direction of the protrusion 21 for fitting, and only about the part in which this inclination part 26 exists. It is also possible to positively form the space described above.

  In such a case, the portion of the packaging container where the inclined portion 26 exists can weaken the force for fitting and removing the lid 10 from the container body 20 and is easy to use. It becomes.

It is a top view of the lid which constitutes the packaging container concerning the present invention. It is a top view of the container main body which comprises the packaging container. It is the front view which made the right half the cross section of the state which fits a cover body to the container main body which comprises the packaging container. It is the fragmentary sectional view which expanded and showed the principal part of FIG. It is the fragmentary sectional view which expanded and showed the principal part of the protrusion for fitting on the cover body side shown in FIG. FIG. 6 is a partial sectional view showing another embodiment of the fitting protrusion on the lid side shown in FIG. 5. It is the fragmentary sectional view which divided and showed further another Example of the protrusion for fitting by the side of the cover body shown in FIG. 5 to (a) and (b). Fig. 2 shows a packaging container according to the present invention (2), wherein (a) is a partially enlarged sectional view when a lid is to be fitted to the container body, and (b) is a lid that is completely fitted to the container body. It is a partial expanded sectional view when it joins. The container for packaging which concerns on this invention (4) is shown, (a) is a partial expanded sectional view when it is going to fit a cover body to a container main body, (b) is a cover body fully fitted to a container main body. It is a partial expanded sectional view when it joins. It is a partial expanded sectional view which shows the problem of the conventional fitting protrusion. It is a partially broken side view which shows another conventional example.

DESCRIPTION OF SYMBOLS 10 Lid 11 ridge 12 for fitting 12 base surface 13 lower side base 14 protrusion part 15 inclination part 15a leg part 20 container main body 21 protrusion ridge 22 base surface 23 lower side base part 24 protrusion part 25 leg part 26 inclination part L center line

Claims (1)

Consists of a container body and a lid formed from a synthetic resin sheet. By fitting the fitting protrusions formed on the container body and the lid, the liquid from the stored items stored inside is discharged to the outside. In a packaging container that prevents leakage,
When the fitting protrusion of the container body is seen in a cross section in a direction perpendicular to the axis, the inner and outer lower bases that first stand up in a substantially C shape from the base surface of the container body, and both the lower base parts And formed with leg portions respectively formed at the upper ends of the ridges, and ridge portions formed at the upper ends of these leg portions and closed at the upper ends,
When the protrusion for fitting the lid is seen in a cross section in a direction perpendicular to the axis, the lower base rises in parallel with the lower base on the inner side of the container body from the base surface of the lid, The leg part formed at the upper end of the lower base part, and rises inclining outward from the base surface of the lid body, the upper end comes into contact with the lower side of the ridge part of the container body, and during the fitting operation An inclined portion that becomes resistance,
It is formed at the upper end of the inclined portion and the leg portion of the lid body, the upper end is closed, and is constituted by a ridge portion fitted to the ridge portion of the container body,
When the fitting protrusions of the container body and the lid are fitted to each other, the inclined part on the lid side becomes a guide surface that guides the protrusion on the container body into the protrusion on the lid side, The packaging container is characterized in that a space can be formed between the inclined part and the leg part outside the container body when the fitting is completed.

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