Packaging container

Abstract

To provide a lid body that is difficult to detach and can be fitted with light force, and a packaging container.SOLUTION: A lid body 100 of a packaging container 300 comprises a top surface 110 and a lid body side fitting portion 150 that can be fitted to a container side fitting portion 250 of the container body 200 outside the top surface 110. The lid body side fitting portion 150 comprises a lid body side engaging portion 153 that can engage with a part of the container side fitting portion 250 of the container body 200, and a lid body side inclined surface 170 that is inclined relatively greater toward a vertical axis Y with respect to the top surface 110 than a horizontal axis X with respect to the top surface 110 is provided at a lower end side of the lid body side engaging portion 153.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a lid for a packaging container and a packaging container including the lid and a container body.

Background Art

[0002] Conventionally, a packaging container including a container body for containing foods such as prepared foods and rice, and a lid that can be fitted to the container body has been used in supermarkets, convenience stores, and the like.

[0003] For example, the packaging container of Patent Document 1 is a packaging container including a container body and a lid. By covering the container body with the lid and pushing it down onto the container body, a lid-side fitting portion of the lid fits into a container-side fitting portion of the container body. Further, in order to prevent the fitting between the lid and the container body from accidentally coming off, a lid-side engaging portion that can engage with a part of the container-side fitting portion of the container body, so-called an undercut, is provided on the lid-side fitting portion. However, since the lid-side engaging portion gets over a part of the container-side fitting portion to fit the lid to the container body, it has been necessary to press the lid downward with a certain amount of force.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, in view of the above problems, the present invention provides a lid that is difficult to come off and can be fitted with a light force, and a packaging container.

Means for Solving the Problems

[0006] In order to solve the above problems, The invention of the present applicationThe lid of the packaging container according to [ID] has a top surface, and on the outside of the top surface, a lid-side fitting portion that can be fitted to the container-side fitting portion of the container body. The lid-side fitting portion includes a lid-side engaging portion that can engage with a part of the container-side fitting portion of the container body, and on the lower end side of the lid-side engaging portion, a lid-side inclined surface that is relatively largely inclined from the horizontal axis with respect to the top surface toward the vertical axis with respect to the top surface is provided.

[0007] According to the above characteristics, the fitting between the lid-side fitting portion and the container-side fitting portion is less likely to come off due to the lid-side engaging portion. On the other hand, when the lid is pressed downward, the lid-side inclined surface continuous with the lower end side of the lid-side engaging portion can move so as to slide on a part of the upper end side of the container-side fitting portion. Therefore, the lid-side inclined surface serves as a guide surface, making it easier to fit the lid-side fitting portion and the container-side fitting portion. In particular, since the lid-side inclined surface is relatively largely inclined from the horizontal axis with respect to the top surface toward the vertical axis, when the lid-side inclined surface abuts against a part of the upper end side of the container-side fitting portion, it is easier to slide downward. As a result, when the lid is pressed downward, the lid-side inclined surface smoothly slides downward on a part of the upper end side of the container-side fitting portion, and the lid-side fitting portion and the container-side fitting portion on the upper end side of the lid-side inclined surface are easily fitted. Also, since the lid-side inclined surface slides smoothly downward, even if the lid is pressed downward with a lighter force, the lid can be fitted to the container body. And since the lid can be fitted to the container body with a lighter force, the working efficiency is improved and the burden on the operator is reduced.

[0008] Furthermore, the packaging container according to the present invention Claim 1 has a container body having a container-side fitting portion, The top surface and, outside the top surface, a lid having a lid-side fitting portion that can be fitted to the container-side fitting portion and and is a packaging container provided with a lid having a lid-side fitting portion that can be fitted to the container-side fitting portion. The container-side fitting portion includes a container-side engaging portion that can engage with a part of the lid-side fitting portion, and a container-side inclined surface on the upper end side of the container-side engaging portion. The lid-side fitting portion includes a lid-side engaging portion that can engage with a part of the container-side fitting portion, and a lid-side inclined surface on the lower end side of the lid-side engaging portion. The lid body inclined surface is inclined relatively greatly toward the vertical axis with respect to the top surface rather than the horizontal axis with respect to the top surface. Before placing the lid on the container body and before the lid-side fitting portion is fitted to the container-side fitting portion, the container-side inclined surface and the lid-side inclined surface have portions that contact each other and portions that do not contact each other. By providing a convex portion that fits within the container-side inclined surface and protrudes toward the lid-side engaging portion, the surface of the container-side inclined surface is configured in an uneven shape, or by providing a convex portion that fits within the lid-side inclined surface and protrudes toward the container-side fitting portion, the surface of the lid-side inclined surface is configured in an uneven shape. This is the gist of the invention.

[0009] According to the above characteristics, since the lid-side inclined surface and the container-side inclined surface have portions that contact each other and portions that do not contact each other, the contact area between the lid-side inclined surface and the container-side inclined surface is reduced and the frictional resistance is decreased. When the lid-side inclined surface contacts the container-side inclined surface, it is easier to slide downward. As a result, when the lid is pressed downward, the lid-side inclined surface slides more smoothly downward on the container-side inclined surface, and the lid-side fitting portion and the container-side fitting portion on the upper end side of the lid-side inclined surface are more easily fitted. Also, since the lid-side inclined surface slides smoothly downward, the lid can be fitted to the container body even when the lid is pressed downward with a lighter force.

[0010] Furthermore, The invention of the present application The packaging container according to [relevant content] is characterized in that the surface of the container-side inclined surface or the lid-side inclined surface is configured in an uneven shape.

[0011] According to the above characteristics, the concave and / or convex portions can reduce the contact area between the lid-side inclined surface and the container-side inclined surface and more reliably reduce the frictional resistance.

Effects of the Invention

[0012] The lid of the present invention and the packaging container are difficult to come off and can be fitted with a light force.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Explanation of Reference Numerals

[0014] 100 Lid 110 Top surface 150 Lid-side fitting portion 153 Lid-side engaging portion 170 Lid-side inclined surface 200 Container body 250 Container-side fitting portion 300 Packaging container X Horizontal axis Y Vertical axis

Modes for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification, "upward" refers to the direction upward in the vertical direction when the packaging container is placed on a horizontal plane with the opening surface of the container body facing upward, and "downward" refers to the direction downward in the vertical direction. Further, as described above, the fitting of the lid body and the container body of the present invention means that the lid body side fitting portion of the lid body is fitted to the container side fitting portion of the container body by covering the container body with the lid body and pushing it down. The lid body side fitting portion is provided with a lid body side engaging portion that can engage with a part of the container side fitting portion of the container body, that is, a so-called undercut.

[0016] First, FIGS. 1, 2, and 3 show the lid body 100 of the present invention. FIG. 1(a) is a plan view of the lid body 100, FIG. 1(b) is a side view of the lid body 100, FIG. 2(a) is an end view taken along line A-A of FIG. 1(a), FIG. 2(b) is an enlarged side view of the periphery of the corner portion of the lid body 100, FIG. 2(c) is an end view taken along line B-B of FIG. 1(a) (or an end view taken along line C-C of FIG. 2(b)), FIG. 3(a) is an enlarged end view of the periphery of the lid body side fitting portion 150 of FIG. 2(a), and FIG. 3(b) is an enlarged end view of the periphery of the lid body side fitting portion 150 of FIG. 2(c).

[0017] As shown in FIGS. 1 and 2, the lid body 100 has a deep dish shape that opens downward, and includes a flat top surface 110 that is substantially rectangular in plan view, side walls 120 that continuously extend obliquely downward from the outer periphery 111 of the top surface 110, a flange portion 130 that extends outward from the side walls 120, a skirt portion 140 that extends downward from the flange portion 130, a lid body side fitting portion 150 provided in a part of the skirt portion 140, and a flat edge portion 160 that extends laterally from the lower end of the skirt portion 140. The side walls 120, the flange portion 130, the skirt portion 140, and the edge portion 160 are continuously provided over the entire circumference in the circumferential direction of the lid body 100. A groove portion 131 that extends linearly is provided between the side walls 120 and the flange portion 130. When the lid body 100 is fitted to the container body 200, the entire lid body side fitting portion 150 is elastically deformed slightly starting from the groove portion 131 to facilitate fitting.

[0018] In addition, the lid-side fitting portion 150 is partially provided at approximately the center of the skirt portion 140 on the long side of the lid 100 and at the four corners of the skirt portion 140 at the corners of the lid 100, respectively. However, the present invention is not limited to this, and the lid-side fitting portion 150 can be provided continuously or intermittently at any location of the skirt portion 140, such as providing the lid-side fitting portion 150 over the entire circumference in the circumferential direction of the lid 100. Further, although the lid 100 has a substantially rectangular shape in plan view, the present invention is not limited to this, and it can have any shape, such as a substantially polygonal shape or a substantially circular shape in plan view.

[0019] Also, as shown in Fig. 3(a), the lid-side fitting portion 150 provided downward from the flange portion 130 is configured to fit into the container-side fitting portion 250 of the container body 200 described later. Specifically, the lid-side fitting portion 150 includes an upper end 151 extending obliquely downward from the flange portion 130, a side end 152 continuous with the upper end 151, and a lid-side engaging portion 153 protruding inward from the side end 152. This lid-side engaging portion 153 is configured to engage with a part of the container-side fitting portion 250 of the container body 200 described later, and is a so-called undercut portion. Further, the lower end of the lid-side engaging portion 153 is provided with a lid-side inclined surface 170 inclined outward. The inner surface 172 of this lid-side inclined surface 170 is a flat inclined surface, the upper end 174 of the lid-side inclined surface 170 is continuous with the lid-side engaging portion 153, and the lower end 173 is continuous with the edge portion 160. Although the lid-side inclined surface 170 is directly continuous with the lower end side of the lid-side engaging portion 153, it is not limited thereto. As described later, if the lid-side inclined surface 170 can serve as a guide surface to facilitate the fitting between the lid-side fitting portion 150 and the container-side fitting portion 250, a structure such as another surface portion may be provided between the lid-side inclined surface 170 and the lid-side engaging portion 153, and the lid-side inclined surface 170 may be indirectly continuous with the lower end side of the lid-side engaging portion 153. However, in order for the lid-side inclined surface 170 to serve as a guide surface, a part of the lid-side inclined surface 170 needs to be located directly below the lid-side engaging portion 153, that is, in the downward direction along the vertical axis Y, and be the inclined surface closest to the lid-side engaging portion 153. Alternatively, when the lid-side fitting portion 150 and the container-side fitting portion 250 are fitted, the lid-side inclined surface 170 needs to be an inclined surface that contacts a part of the container-side fitting portion 250 immediately before the lid-side engaging portion 153 gets over a part of the container-side fitting portion 250 (for example, the container-side engaging portion 253).

[0020] And the lid body side inclined surface 170 is inclined relatively largely toward the vertical axis Y than the horizontal axis X, and the angle α between the lid body side inclined surface 170 and the horizontal axis X is larger than the angle β between the lid body side inclined surface 170 and the vertical axis Y (α>β). Here, the horizontal axis X is an axis extending along the horizontal plane when the lid body 100 is placed on the horizontal plane, and the vertical axis Y is an axis extending in a direction (vertical direction) perpendicular to the horizontal plane. Also, the top surface 110 is a substantially flat surface, and when the lid body 100 is placed on the horizontal plane, the top surface 110 is a surface portion extending substantially horizontally. Therefore, the horizontal axis X is an axis extending horizontally with respect to the top surface, and the vertical axis Y is an axis extending vertically with respect to the top surface.

[0021] Also, in the lid body side inclined surface 170 shown in FIG. 3, α is 60 degrees and β is 30 degrees, but it is not limited thereto. α can be appropriately changed as long as it is an arbitrary angle between 46 degrees and 80 degrees (46°≦α≦80°). If α is less than 46 degrees, the lid body side inclined surface 170 gets closer to the horizontal axis X. Therefore, as will be described later, when the lid body 100 is fitted to the container body 200, the frictional resistance between the lid body side inclined surface 170 and the container side inclined surface 270 increases, and the force required for fitting becomes large. Also, if α exceeds 80 degrees, the lid body side inclined surface 170 becomes in a state close to vertical. Therefore, when the lid bodies 100 are stacked and stored, the convex portion 171 of the upper lid body 100 and the upper end 151 of the lower lid body 100 cannot come into firm contact, and it becomes difficult to stack the lid bodies 100 stably. Therefore, if α is between 46 degrees and 80 degrees (46°≦α≦80°), as will be described later, the lid body 100 can be fitted to the container body 200 with a light force, and stable stacking of the lid bodies 100 becomes possible.

[0022] In addition, in the lid-side inclined surface 170 shown in Fig. 3(a), the surface 172 of the lid-side inclined surface 170 is relatively largely inclined toward the vertical axis Y rather than the horizontal axis X, and the angle α between the surface 172 of the lid-side inclined surface 170 and the horizontal axis X is an arbitrary angle between 46 degrees and 80 degrees (46° ≤ α ≤ 80°), but it is not limited thereto. For example, as shown in Fig. 3(b), when the lid-side inclined surface 170 is provided with a convex portion 171, the convex portion 171 of the lid-side inclined surface 170 is relatively largely inclined toward the vertical axis Y rather than the horizontal axis X, and the angle α' between the convex portion 171 of the lid-side inclined surface 170 and the horizontal axis X is larger than the angle β' between the convex portion 171 of the lid-side inclined surface 170 and the vertical axis Y (α' > β'). And α' is 60 degrees and β' is 30 degrees. Further, when the convex portion 171 of the lid-side inclined surface 170 is relatively largely inclined toward the vertical axis Y rather than the horizontal axis X, the surface 172 of the lid-side inclined surface 170 may not be relatively largely inclined toward the vertical axis Y rather than the horizontal axis X. For example, the angle α may be 45 degrees. Also, although the angle α' of the convex portion 171 of the lid-side inclined surface 170 is 60 degrees, it is not limited thereto, and the angle α' between the convex portion 171 of the lid-side inclined surface 170 and the horizontal axis X may be an arbitrary angle between 46 degrees and 80 degrees (46° ≤ α' ≤ 80°).

[0023] Also, as shown in Figs. 2(b) and 3(b), some of the lid-side inclined surfaces 170 of the lid-side fitting portions 150 are provided with convex portions 171 protruding inward, and the surface 172 of the lid-side inclined surface 170 is uneven. Specifically, by providing a plurality of convex portions 171 protruding linearly in the vertical direction on the surface 172, the surface 172 is configured to be uneven by the portions where the convex portions 171 are provided and the portions where they are not provided. Note that the convex portions 171 are provided only on the lid-side inclined surfaces 170 provided at a part of the corner portions of the lid 100, but it is not limited thereto, and they may be provided on all the lid-side inclined surfaces 170 provided on the lid 100.

[0024] Next, FIGS. 4 and 5 show the container body 200 covered by the lid body 100 of the present invention. Note that FIG. 4(a) is a plan view of the container body 200, FIG. 4(b) is a side view of the container body 200, FIG. 5(a) is a D-D end view of FIG. 4(a), and FIG. 5(b) is an E-E end view of FIG. 4(a).

[0025] As shown in FIGS. 4 and 5, the container body 200 has a shallow dish shape that opens upward, and includes a flat bottom wall 210 that is substantially rectangular in plan view, and legs 212 that bulge downward at the outer periphery 211 of the bottom wall 210. A plurality of partitions 213 that project upward from the bottom wall 210 are provided in parallel with each other on the bottom wall 210, and food such as sushi can be accommodated in the spaces partitioned by the partitions 213. Further, a side wall 220 formed to rise from the outer periphery 211 of the bottom wall 210, a flange portion 230 that extends outward from the side wall 220, a skirt portion 240 that extends downward from the flange portion 230, a container-side fitting portion 250 provided at a part of the skirt portion 240, and a flat edge portion 260 that extends laterally from the lower end of the skirt portion 240 are provided. The side wall 220, the flange portion 230, the skirt portion 240, and the edge portion 260 are continuously provided over the entire circumference in the circumferential direction of the container body 200.

[0026] Note that the container-side fitting portion 250 is partially provided at substantially the center of the skirt portion 240 on the long side of the container body 200 and at the four corners of the corner portions of the container body 200, respectively, but is not limited thereto. The container-side fitting portion 250 can be continuously or intermittently provided at any location on the skirt portion 240, such as providing the container-side fitting portion 250 over the entire circumference in the circumferential direction of the container body 200. Further, although the container body 200 is substantially rectangular in plan view, it is not limited thereto, and can have any shape such as substantially polygonal in plan view or substantially circular in plan view.

[0027] Also, as shown in Fig. 5(a), the container-side fitting portion 250 provided downward from the flange portion 230 is configured to fit with the lid-body-side fitting portion 150 of the lid body 100. Specifically, the container-side fitting portion 250 includes a lower end 251 extending obliquely upward from an edge portion 260, a side end 252 continuous with the lower end 251, and a container-side engaging portion 253 protruding outward from the side end 252. This container-side engaging portion 253 is configured to engage with the lid-body-side engaging portion 153 of the lid-body-side fitting portion 150 of the lid body 100, which will be described later, and is a so-called undercut portion. Further, an upper end of the container-side engaging portion 253 is provided with a container-side inclined surface 270 inclined from the flange portion 230 toward the container-side engaging portion 253. A surface 272 of the container-side inclined surface 270 is a flat inclined surface. Note that the container-side inclined surface 270 is directly continuous with the upper end side of the container-side engaging portion 253, but is not limited thereto. As will be described later, if the lid-body-side inclined surface 170 can slide downward on the container-side inclined surface 270 to facilitate the fitting between the lid-body-side fitting portion 150 and the container-side fitting portion 250, a configuration such as another surface portion may be provided between the container-side inclined surface 270 and the container-side engaging portion 253, and the container-side inclined surface 270 may be indirectly continuous with the upper end side of the container-side engaging portion 253. However, in order to facilitate the fitting between the lid-body-side fitting portion 150 and the container-side fitting portion 250, a part of the container-side inclined surface 270 needs to be located directly above the container-side engaging portion 253, that is, in the upward direction along the vertical axis, and be the inclined surface closest to the container-side engaging portion 253. Alternatively, when the lid-body-side fitting portion 150 and the container-side fitting portion 250 are fitted, the container-side inclined surface 270 needs to be an inclined surface that contacts a part of the lid-body-side fitting portion 150 immediately before the container-side engaging portion 253 gets over a part of the lid-body-side fitting portion 150 (for example, the lid-body-side engaging portion 153).

[0028] Note that the lid body 100 and the container body 200 are formed by sheet forming (for example, vacuum forming, pressure-air forming, hot-plate forming) using a sheet-like material having a thickness of about 0.1 mm to 1.00 mm. For example, as the material of the lid body 100 and the container body 200, not limited to polystyrene, polypropylene, polystyrene, A-PET, polylactic acid, and synthetic resins obtained by biaxially stretching these, paper, metal, etc. can be used.

[0029] Next, the packaging container 300 with the lid 100 of the present invention fitted to the container body 200 will be described with reference to FIGS. 6, 7, and 8. Note that FIG. 6(a) is a plan view of the packaging container 300 before the lid 100 is fitted to the container body 200, FIG. 6(b) is a side view of the packaging container 300, FIG. 7(a) is an end view taken along the line F-F of FIG. 6(a), FIG. 7(b) is an end view taken along the line G-G of FIG. 6(a), FIG. 8(a) is an end view of the state where the lid 100 is fitted to the container body 200 in the end view taken along the line F-F of FIG. 6(a), and FIG. 8(b) is an end view of the state where the lid 100 is fitted to the container body 200 in the end view taken along the line G-G of FIG. 6(a).

[0030] As shown in FIGS. 6 and 7, the packaging container 300 including the lid 100 and the container body 200 is in a state before the lid 100 and the container body 200 are fitted together just by placing the lid 100 on the container body 200. In this state, as shown in FIG. 7(a), the surface 172 of the lid-side inclined surface 170 of the lid 100 is in contact with the container-side inclined surface 270 of the container body 200, and the lid-side fitting portion 150 continuous with the upper side of the lid-side inclined surface 170 and the container-side fitting portion 250 continuous with the lower side of the container-side inclined surface 270 are not fitted to each other.

[0031] Next, as shown in FIG. 8, when the lid 100 is pressed downward, the lid-side inclined surface 170 of the lid 100 moves downward so as to slide on the container-side inclined surface 270 of the container body 200, and the lid-side engaging portion 153 of the lid-side fitting portion 150 above the lid-side inclined surface 170 gets over the container-side engaging portion 253 of the container-side fitting portion 250 below the container-side inclined surface 270, and the lid-side fitting portion 150 and the container-side fitting portion 250 are fitted to each other. Then, even when the lid 100 is lifted upward and the lid 100 is likely to be inadvertently detached from the container body 200, the lid-side engaging portion 153 of the lid-side fitting portion 150 is locked to the container-side engaging portion 253 of the container-side fitting portion 250, so that it is possible to prevent the fitting between the lid-side fitting portion 150 and the container-side fitting portion 250 from being inadvertently disengaged.

[0032] In this way, the fitting between the lid-side fitting portion 150 and the container-side fitting portion 250 is made difficult to come off by the lid-side engaging portion 153 and the container-side engaging portion 253. On the other hand, when the lid 100 is pressed downward, the lid-side inclined surface 170 continuous with the lower end side of the lid-side engaging portion 153 can move on the container-side inclined surface 270 continuous with the upper end side of the container-side engaging portion 253 in a sliding manner. Therefore, the lid-side inclined surface 170 serves as a guide surface and facilitates the fitting between the lid-side fitting portion 150 and the container-side fitting portion 250.

[0033] In particular, as shown in Fig. 3(a), since the lid-side inclined surface 170 continuous with the lower end side of the lid-side engaging portion 153 of the lid 100 is inclined relatively largely toward the vertical axis Y rather than the horizontal axis X with respect to the top surface 110, the lid-side inclined surface 170 is more likely to slide downward when it abuts against the container-side inclined surface 270 or a part of the container-side fitting portion 250. As a result, when the lid 100 is pressed downward, the lid-side inclined surface 170 smoothly slides downward on the container-side inclined surface 270 or a part of the container-side fitting portion 250, and the lid-side fitting portion 150 and the container-side fitting portion 250 on the upper end side of the lid-side inclined surface 170 are easily fitted together. Further, since the lid-side inclined surface 170 slides smoothly downward, the lid 100 can be fitted to the container body 200 even when the lid 100 is pressed downward with a lighter force. And since the lid 100 can be fitted to the container body 200 with a lighter force, the working efficiency is improved and the burden on the operator is reduced.

[0034] Also, as shown in FIG. 7(b), by providing the convex portion 171 on the surface 172 of the lid body inclined surface 170, the surface 172 is configured in an uneven shape. And when the lid body 100 is simply placed on the container body 200, in the state before the lid body 100 and the container body 200 are fitted together, due to the concave and / or convex portions, the lid body inclined surface 170 and the container body inclined surface 270 have portions that contact each other and portions that do not contact each other. Therefore, the lid body inclined surface 170 and the container body inclined surface 270 do not contact each other over the entire surface, but only a part of them contacts each other (more specifically, the surface 172 of the lid body inclined surface 170 and the surface 272 of the container body inclined surface 270 do not make surface contact, and only the convex portion 171 of the lid body inclined surface 170 contacts the surface 272 of the container body inclined surface 270, and the surface 172 where the convex portion 171 of the lid body inclined surface 170 is not provided is in a state of not contacting the surface 272 of the container body inclined surface 270).

[0035] Therefore, since the contact area between the lid body inclined surface 170 and the container body inclined surface 270 is reduced and the frictional resistance is decreased, when the lid body inclined surface 170 abuts on the container body inclined surface 270, it is easier to slide downward. As a result, when the lid body 100 is pressed downward, the lid body inclined surface 170 slides more smoothly downward on the container body inclined surface 270, and the lid body fitting portion 150 on the upper end side of the lid body inclined surface 170 and the container body fitting portion 250 are more easily fitted together. Also, since the lid body inclined surface 170 slides smoothly downward, even if the lid body 100 is pressed downward with a lighter force, the lid body 100 can be fitted to the container body 200.

[0036] In addition, in FIG. 7(b), the convex portion 171 is provided on the surface 172 of the lid-side inclined surface 170, so that the lid-side inclined surface 170 is configured in a concavo-convex shape. However, the present invention is not limited thereto. By providing a convex portion on the surface 272 of the container-side inclined surface 270, the container-side inclined surface 270 may be configured in a concavo-convex shape. As a result, the contact area between the lid-side inclined surface 170 and the container-side inclined surface 270 is reduced and the frictional resistance is decreased. Therefore, when the lid-side inclined surface 170 abuts on the container-side inclined surface 270, it is easier to slide downward. Further, although the convex portion 171 is provided on the lid-side inclined surface 170 or the container-side inclined surface 270 to form a concavo-convex shape, and the lid-side inclined surface 170 and the container-side inclined surface 270 have portions that abut on each other and portions that do not abut on each other, the present invention is not limited thereto. As long as the shapes of the lid-side inclined surface 170 or the container-side inclined surface 270 have portions that abut on each other and portions that do not abut on each other, they can be appropriately changed to any shape.

[0037] In addition, as shown in FIG. 8, the lid-side fitting portion 150 of the lid body 100 is externally fitted to the container-side fitting portion 250 of the container body 200. However, the present invention is not limited thereto. The lid-side fitting portion 150 of the lid body 100 can adopt any fitting form, such as being internally fitted or internally and externally fitted to the container-side fitting portion 250 of the container body 200. Further, as shown in FIGS. 7 and 8, the lid-side engaging portion 153 of the lid-side fitting portion 150 of the lid body 100 can be engaged with the container-side engaging portion 253 of the container-side fitting portion 250 of the container body 200. However, the present invention is not limited thereto. As long as the fitting between the lid-side fitting portion 150 and the container-side fitting portion 250 is not easily disengaged, the lid-side engaging portion 153 of the lid-side fitting portion 150 may be configured to be engaged with any portion of the container-side fitting portion 250. Further, as shown in FIG. 7, the lid-side inclined surface 170 of the lid body 100 is in contact with the container-side inclined surface 270 of the container body 200. However, the present invention is not limited thereto. The lid-side inclined surface 170 of the lid body 100 may be configured to be in contact with any portion on the upper end side of the container-side fitting portion 250.

[0038] Note that the lid of the packaging container and the packaging container of the present invention are not limited to the above embodiments, and various modifications and combinations are possible within the scope described in the claims and the scope of the embodiments, and these modifications and combinations are also included in the scope of the rights.

Claims

1. A top surface, and on the outer side of the top surface, a lid-side fitting portion that can be fitted to a container-side fitting portion of a container body, which is a lid of a packaging container, wherein the lid-side fitting portion includes a lid-side engaging portion that can engage with a part of the container-side fitting portion of the container body, and a lid-side inclined surface that is relatively largely inclined from a horizontal axis with respect to the top surface toward a vertical axis with respect to the top surface is provided on the lower end side of the lid-side engaging portion, and the lid of the packaging container is characterized by this.

2. A container body having a container-side fitting portion, and a lid having a lid-side fitting portion that can be fitted to the container-side fitting portion, which is a packaging container, wherein the container-side fitting portion includes a container-side engaging portion that can engage with a part of the lid-side fitting portion, and a container-side inclined surface is provided on the upper end side of the container-side engaging portion, the lid-side fitting portion includes a lid-side engaging portion that can engage with a part of the container-side fitting portion, and a lid-side inclined surface is provided on the lower end side of the lid-side engaging portion, and in a state before the lid is placed on the container body and the lid-side fitting portion is fitted to the container-side fitting portion, the container-side inclined surface and the lid-side inclined surface include a portion where they are in contact with each other and a portion where they are not in contact with each other, and the packaging container is characterized by this.

3. The surface of the container-side inclined surface or the lid-side inclined surface is configured in an uneven shape, and the packaging container according to claim 2 is characterized by this.

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