JP2022116425A - food packaging container - Google Patents

Abstract

To provide a food packaging container that allows, when covering a container body with a lid body, the lid body to be positively secured on the container body through mutual fitting of button-configured concave-convex portions.SOLUTION: A food packaging container comprises a container body 1 and a lid body 11 that are made attachable/detachable for opening or closing by fit means 20 configured with a fit convex 31 and a fit concave 41 mutually fitted. The fit convex 31 is formed with convex-sided pimples 35 in a projection form extending along a circumferential direction, and the fit concave 41 is formed with concave-sided dimples 45 in a groove form extending along a circumferential direction. The convex-sided pimples 35 are separated by convex-sided dimples 37 extending along a fit direction to leave the convex-sided pimples 35 in the convex-sided projections 36, and the concave-sided dimples 45 are separated by concave-sided pimples 47 extending along a fit direction to leave the concave-sided dimples 45 in concave-sided recesses 46. By engaging the convex-sided projections 36 in the concave-sided pimples 47 in a manner of pushing and spreading the concave-sided pimples 47, the convex-sided pimples 35 and the concave-sided dimples 45 are partially inter-digitated at both sides.SELECTED DRAWING: Figure 6

Description

The present invention provides a container for storing and selling vegetables such as cherry tomatoes, fruits, etc., for display and sale at stores, etc., and when the container body is covered with a lid provided to be openable and closable, the container body and the lid are separated from each other. The present invention relates to a food packaging container that can be securely attached to the body.

2. Description of the Related Art Conventionally, when small-sized vegetables such as cherry tomatoes, fruits, etc. are sold in stores, they are stored and displayed in a transparent container. It consists of a lid that is put on the Then, in order to firmly attach the lid to the container body, for example, a button fitting composed of a convex portion and a concave portion that are mutually fitted to flange-shaped peripheral edges formed on the container body and the lid body respectively. configuration is adopted.

For example, it is a packaging container disclosed in Patent Document 1, a thin synthetic resin packaging container disclosed in Patent Document 2, and a concave-convex fitting container disclosed in Patent Document 3. The packaging container of Patent Document 1 is said to have an abutting portion which is formed in a straight line on at least a part of the outer periphery projecting outward in the convex portion that fits into the concave portion and contacts the mouth of the concave portion when entering the concave portion. do. The packaging container of Patent Literature 2 has a fitting convex portion in which a plurality of protrusions are formed to form a substantially cylindrical protrusion, and a fitting concave portion in which a ridge protruding inwardly around the opening is formed. It is assumed that the protrusion and the ridge are engaged to fit the fitting projection into the fitting recess. In the concave-convex fitting container of Patent Document 3, when a cylindrical convex portion formed with the maximum diameter of the inclined surface equal to or smaller than the inscribed circle of the opening edge is fitted in the concave portion having the opening edge of a substantially square shape. , the maximum diameter of which pushes the recess into engagement.

JP 2019-77455 A JP 2007-45495 A JP-A-10-167245

However, even if the fitting structure according to Patent Document 1 improves the slippage of the protrusions into the recesses during fitting, the fitting state is not secure. Since the ridges of the mating recesses are made to ride over the protrusions of the mating projections, it is necessary to apply a large deformation force to make them ride over the fitting projections. In the fitting structure according to Patent Document 3, since the peripheral wall of the recess is pushed out by the maximum diameter part of the projection, plastic deformation occurs so that parts other than the part where it is pushed out and held are also pushed out, and it may come off after fitting. there were.

Therefore, the present invention has been made in view of the above-mentioned conventional circumstances, and when the lid is put on the container body, it is fixed by fitting the button-shaped fitting projections and fitting recesses to each other. In doing so, the concave and convex portions in the circumferential direction that are meshed and engaged inside and outside along the fitting direction of the fitting convex portion and the fitting concave portion are divided by a plurality of groove-shaped portions along the fitting direction, and are left. One of the inner and outer uneven portions is positioned and guided in the other groove-shaped portion, and the portions of the uneven portions existing on both sides of the groove-shaped portion are engaged with each other, so that the fitting convex portion and the fitting concave portion are mutually engaged. To provide a food packaging container in which a lid body can be securely fixed to a container body by smoothly and surely fitting a lid, and the fitting action is not reduced even by repeated fitting operations.

In order to solve the above-described problems, the present invention provides a food packaging container provided with fitting means 20 for opening or closing the container main body 1 and the lid body 11 by detaching them, wherein the fitting means 20 is , a fitting convex portion 31 and a fitting concave portion 41 provided so as to be fitted to the body flange 2 of the container body 1 and the lid body flange 12 of the lid body 11,
A protrusion-side projecting portion 35 formed in the circumferential direction on the side wall of the fitting projection 31 and a groove-shaped recess-side recess 45 formed in the sidewall of the fitting recess 41 in the circumferential direction are fitted. In addition to overriding each other in the mating direction and meshing engagement,
The protrusion-side protrusions 35 are divided at predetermined intervals by a plurality of groove-shaped protrusion-side depressions 37 formed along the fitting direction of the fitting protrusions 31 , and project between the protrusion-side depressions 37 . The concave side protrusions 36 are formed, and the concave side protrusions 45 are divided at predetermined intervals by a plurality of groove-shaped concave side protrusions 47 formed along the fitting direction of the fitting recess 41 to form the concave side protrusions. A concave portion side concave portion 46 is formed between 47,
When the fitting protrusion 31 enters the fitting recess 41, the protrusion-side protrusion 36 is guided into the recess-side protrusion 47, and the recess-side recess 46 is guided into the protrusion-side recess 37. , the projecting portion 35 and the recessed portion 45 located at the side portions of the projecting portion 36 and the projecting portion 47 are engaged with each other so as to be engaged with each other. It is characterized by
The remaining portion of the convex-side protrusion 35 divided by the convex-side recess 37 is arranged in the convex-side protrusion 36, and the remaining portion of the recess-side recess 45 divided by the recess-side protrusion 47 is the recess. It can be configured by being arranged in the side recess portion 46 .
In addition, in the fitting means 20, the fitting convex portion 31 is formed on the side wall portion of the fitting convex portion 31 itself so as to bulge in a substantially mountain-like cross section to form a ridge along the circumferential direction. The protrusion 35 is formed, and the fitting recess 41 is recessed into a side wall portion of the fitting recess 41 itself in a substantially mountain-shaped cross section to form a groove along the circumferential direction. and
On the other hand, the fitting projection 31 has a plurality of projection-side projections 36 projecting outward along the fitting direction along a virtual circle centered on the central position of the fitting projection 31 . are arranged at predetermined intervals, and convex-side recessed portions 37 are arranged between the convex-side protrusions 36, and the fitting recesses 41 are fitted to the side walls of the fitting recesses 41 themselves. Concave-side protrusions 47 protruding outward along the fitting direction are arranged at predetermined intervals along a virtual circle centered on the central position of the fitting recess 41 . A concave portion side concave portion 46 is arranged between the portions 47,
When the fitting protrusion 31 enters the fitting recess 41, the protrusion-side protrusion 36 is guided into the recess-side protrusion 47 and engaged so as to spread the recess-side protrusion 47. The projecting portion 35 and the recessed recessed portion 45 located at the sides of the side projecting portion 36 and the recessed projecting portion 47 are adapted to be engaged with each other by overriding each other. characterized by
It is possible to configure such that when the fitting protrusion 31 enters the fitting recess 41 , the recess-side recess 46 is guided into the protrusion-side recess 37 .
The protrusion-side protrusion 35 is formed on the side wall of the top of the fitting protrusion 31 by a top inclined surface 32 formed so as to gradually increase in diameter from the top to the base. The side wall portion of 31 itself can be formed in such a manner that it is bulged in a substantially mountain-like cross-section so as to spread outward and is formed as a ridge along the circumferential direction.
The recess-side recess 45 is formed on the side wall of the opening of the fitting recess 41 by an opening inclined surface 43 that gradually spreads outward as it reaches the opening. It can be constructed by forming a recess in a substantially mountain-like cross-section so as to narrow inwardly in the side wall portion of the body and forming a groove-like shape along the circumferential direction.
The protrusion-side recessed portion 37 is formed in a base that gradually spreads from the top portion of the top inclined surface 32 of the fitting protrusion 31 to the side wall portion of the base portion of the fitting protrusion 31 toward the opening side. It is formed in a groove shape up to the inclined surface 34 and intermittently divides the protrusion-side protrusion 35 formed along the circumferential direction of the side wall of the fitting protrusion 31 itself, and the protrusion The remaining portion of the side protruding portion 35 can be configured so as to face the recess side protruding portion 47 of the fitting recess 41 .
The recess-side projecting portion 47 has a plurality of recess-side recesses 46 arranged at predetermined intervals so as to be recessed inward along an imaginary circle centered on the central position of the fitting recess 41 . Between the concave-side concave portions 46 , the concave-side concave portions 46 themselves are formed by the adjacent side portions of the concave-side concave portions 46 themselves, and extend from the opening end on the outer edge side of the opening inclined surface 43 to the opening side of the bottom inclined surface 42 . It has a groove shape along the fitting direction to the end, and intermittently divides the recessed part side recessed part 45 formed along the circumferential direction of the side wall of the fitting recessed part 41 itself. The remaining portion of the recessed portion 45 may be provided so as to face the protrusion-side recessed portion 37 of the fitting protrusion 31 .
The recess-side protruding portion 47 extends from the opening end of the opening inclined surface 43 to the opening side of the bottom inclined surface 42 that gradually spreads outward as it reaches the side wall portion of the bottom of the fitting recess 41 toward the opening side. It can be configured in a groove shape along the fitting direction up to.
The respective center lines of the protrusion-side protrusion 36 and the recess-side protrusion 47 are aligned, and the outer side portions of the remaining portion of the protrusion-side protrusion 35 in the protrusion-side protrusion 36 are located on the recess side. It can be configured so as to abut on both inner surfaces of the projecting portion 47 .
The corner portion of the projection-side projection 35 left in the projection-side projection 36 may be formed to have an obtuse angle when viewed from the plane, while the side surface of the recess-side projection 47 may be formed to have an arc shape. can.
The center lines of the recessed portion 46 and the recessed portion 37 are aligned with each other, and the outer side portions of the remaining portion of the recessed portion 45 in the recessed portion 46 are recessed on the projecting portion side. It can be configured so as to abut against both inner surfaces of the portion 37 .
The corner portion of the recessed portion 45 left in the recessed portion 46 may be formed to have an obtuse angle when viewed from above, while the side surface of the projected portion 37 may be formed to have an arc shape. .

In the food packaging container according to the present invention constructed as described above, when the container main body 1 is covered with the lid body 11 after the predetermined contents are stored in the container main body 1, the fitting protrusion of the fitting means 20 is removed. The portion 31 enters and fits into the fitting recess 41 , and the lid body 11 closes the container body 1 .
In the fitting means 20 , when the fitting protrusion 31 is fitted into the fitting recess 41 , the protrusion-side protrusion 36 of the fitting protrusion 31 is positioned and guided in the recess-side protrusion 47 of the fitting recess 41 . The projection 47 on the side of the concave portion is engaged so as to be spread out. At this time, similarly, the recessed portion 46 on the concave portion side is positioned and guided in the recessed portion on the convex portion side 37 and is fitted so as to slide. By doing so, the protrusion-side protrusion 35 in the protrusion-side protrusion 36 and the recess-side recess 45 in the recess-side recess 46 are engaged with each other at their side portions, thereby forming a fitting protrusion. Portion 31 is retained within mating recess 41 .
In addition, since the respective center lines of the protrusion-side protrusion 36 and the recess-side protrusion 47 are aligned with each other, the remaining portion of the protrusion-side protrusion 35 is quickly guided into the recess-side protrusion 47. The fitting and the obtuse angle corner of the projection 35 forcibly expand the arc-shaped side surface of the projection 47 on the recessed side in a biting manner along with this fitting, resulting in a stronger engagement. keep it stationary.
Similarly, since the center lines of the recessed portion 46 and the recessed portion 37 are aligned with each other, the remaining portion of the recessed portion 45 is quickly guided into the recessed portion 37. Along with this fitting, the obtuse angle corner of the recessed portion 45 on the recessed portion side forces the arc-shaped side surface of the recessed portion 37 on the protruding portion side to slightly bitten and widen, thereby further strengthening the engagement. keep it stationary.
In this way, the side wall portion of the top portion of the fitting projection 31 bulges in a mountain shape in cross section and extends along the circumferential direction, and the side wall portion of the opening of the fitting recess 41 The groove-shaped concave portion side concave portion 45 that is concave in a mountain shape in cross section and extends along the circumferential direction is the fitting convex portion 31 and the fitting convex portion 31 at the side portions of the convex portion side protrusion portion 36 and the concave portion side protrusion portion 47, respectively. When the mating recesses 41 are fitted to each other, the mating protrusions 31 are fitted into the mating recesses 41 by partially overriding each other and engaging in the mating direction.
The projection-side protrusion 35 is divided by the groove-shaped projection-side recess 37, and similarly, the recess-side recess 45 is divided by the groove-shaped recess-side projection 47 in the circumferential direction. The protruding part 35 and the recessed part 45 on the side of the concave part are partially meshed on both sides of the divided part, and when engaged, they can be overcome without requiring a large acting force.

Since the present invention is configured as described above, when the lid 11 is put on the container main body 1, the fitting projection 31 and the fitting recess 41 of the fitting means 20 are engaged with each other so that the container is held in place. The lid body 11 can be reliably fixedly fitted to the main body 1. - 特許庁

Moreover, when the fitting protrusion 31 and the fitting recess 41 are fitted to each other, the protrusion-side protrusion 36 of the fitting protrusion 31 is fitted into the recess-side protrusion 47 of the fitting recess 41 . Guided in the mating direction, the left corner portion of the protrusion-side protrusion 35 engages the recess-side protrusion 47 so as to forcibly spread it. Similarly, the concave-side concave portion 46 of the fitting concave portion 41 is fitted into the convex-side concave portion 37 of the fitting convex portion 31, and the corner portion of the remaining concave-side concave portion 45 is the convex-side concave portion. 37 is locked so as to forcibly spread. By doing so, the engagement along the mating direction overridden between the protrusion-side protrusion 35 and the recess-side recess 45 at the side portions of the divided portions of the protrusion-side recess 37 and the recess-side protrusion 47 is achieved. By joining, the fitting state of the fitting convex portion 31 and the fitting recessed portion 41 is further strengthened, and the fitting convex portion 31 is stopped in the fitting recessed portion 41, so that the fitted state can be maintained.

In addition, since both the protrusion-side protrusion 35 and the recess-side recess 45 are separated in the circumferential direction, the mutual overriding engagement between the protrusion-side protrusion 35 and the recess-side recess 45 is large. Engagement can be achieved without requiring any force.

That is, when the fitting protrusion 31 and the fitting recess 41 are fitted together, the protrusion-side protrusion 35 and the recess-side recess 45 are not overridden over the entire circumferential direction, but the protrusion-side recess 37 and concave-side protruding portions 47, respectively. Since it is guided into the side recess 37, it can be smoothly inserted along the fitting direction. Further, after entering, the protrusion-side protrusion 35 and the recess-side recess 45 at the side portions of the protrusion-side recess 37 and the recess-side protrusion 47 are partially meshed and engaged with each other. Coupled with the fact that there are a plurality of meshing and engaging points in the circumferential direction, it is not easily released, and the fitted state of both the fitting convex portion 31 and the fitting concave portion 41 can be stably maintained. .

It should be noted that the reference numerals added in the sections for the means for solving the above problems and the section for the effect of the invention are provided for easy reference to the parts showing the constituent parts described in the drawings. The present invention is not limited to the structures, shapes, etc. indicated by these descriptions, reference numerals, etc. in the drawings.

It is a perspective view of the whole container showing one form for carrying out the present invention. Similarly, the fitting projection is shown, (A) is a plan view, (B) is an AA line end view, and (C) is a BB line end view. Similarly, the fitting recess is shown, (A) is a plan view, (B) is a CC line end view, and (C) is a DD line end view. It is a top view of the fitting means at the time of fitting similarly including a one part enlarged view. It is a side view of the fitting convex part in a fitting means similarly, and a fitting recessed part. It is a perspective view of the same. It is an end view of the EE line, the FF line, the GG line, and the HH line in the same plane at the time of fitting. FIG. 8 is a side cross-sectional view showing the fitting projection and the fitting recess during fitting along the end surface of line FF in FIG. 7;

Hereinafter, one mode for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawings stores and holds stored items T such as relatively small-sized vegetables and fruits such as cherry tomatoes. It is a substantially box-shaped container body that can be In the illustrated example, a lid body 11 that is put on the container body 1 so as to close the opening of the container body 1 is pivotably connected to the container body 1 via a hinge portion 10 . Also, although illustration is omitted, it is also possible to implement the same when the container main body 1 and the lid body 11 are separated.

As shown in FIG. 1, a rim-shaped main body flange 2 is protrudingly formed on the periphery of the container body 1, and a rim-shaped lid body 11 is similarly formed on the periphery of the lid body 11. As shown in FIG. A flange 12 is formed in a projecting shape, and when the container body 1 is closed by the lid 11, the body flange 2 and the lid body flange 12 abut or approach each other and face each other.

Between the main body flange 2 and the lid body flange 12, there is a fitting of a button structure consisting of a fitting convex portion 31 and a fitting concave portion 41 in which the fitting convex portion 31 is fitted and secured. By means 20, the lid 11 closes the opening of the container body 1 and joins it.

In the case where the lid 11 is pivotally connected to the container body 1 as shown in the drawing, the fitting means 20 is located on the open end side corresponding to a remote portion from the hinge portion 10 . An appropriate number of them are arranged, for example, in pairs on both sides, and if necessary, they are also arranged on the hinge portion 10 side. When the container main body 1 and the lid 11 are separated from each other, an appropriate number of them are arranged to face the peripheral edge of the opening edge.

The fitting means 20 is composed of a fitting projection 31 and a fitting recess 41 into which the fitting projection 31 is forcibly entered to be fitted together, as shown in the figure. Furthermore, the fitting convex portion 31 is formed so as to protrude toward the container body 1 side from one side of the lid body flange 12 of the lid body 11 so as to protrude toward the opening side of the lid body 11. A recess 41 is formed on one side of the body flange 2 of the container body 1 so as to protrude toward the bottom side of the container body 1 . As a matter of course, these fitting projections 31 and fitting recesses 41 are arranged and formed at positions that match each other when the lid body 11 is put on the container body 1 . In some cases, the fitting protrusion 31 is formed on the container body 1 and the fitting recess 41 is formed on the lid 11. It is formed so as to protrude on the top plate side of 11 .

As shown in FIG. 2, the fitting convex portion 31 has a top inclined surface 32 formed on the side wall portion of the top portion of the fitting convex portion 31 itself. It is The opening of the fitting protrusion 31, which is continuous with the body flange 2, is formed with a base inclined surface 34 that narrows inwardly of the fitting protrusion 31 so that the diameter gradually decreases from the opening end side. .

On the other hand, as shown in FIG. 3, the fitting concave portion 41 has the same outer shape as viewed from the plane so that the fitting convex portion 31 can be fitted therein. A bottom inclined surface 42 is formed against which the top inclined surface 32 abuts when the portion 31 is fitted in the fitting recess 41 (see each end view in FIG. 7). On the side wall of the opening of the fitting recess 41, which is continuous with the body flange 2, there is an opening inclined surface 43 that gradually spreads outward as it reaches the opening so that the base inclined surface 34 abuts thereon. formed.

In addition, since the top inclined surface 32 of the fitting projection 31 and the opening inclined surface 43 of the fitting recess 41 are formed at the same inclination angle, the fitting projection 31 can move into the fitting recess 41. At the start of fitting, it is possible to reduce the displacement between the fitting convex portion 31 and the fitting recessed portion 41 and to facilitate the fitting operation (see FIG. 8).

The apex inclined surface 32 of the fitting projection 31 is bulged in a substantially mountain-like cross-section so that the side wall of the fitting projection 31 itself expands outward to form a ridge along the circumferential direction. A protrusion-side protruding portion 35 is formed. The projecting portion 35 has an inclined surface that gradually narrows toward the inside of the fitting projecting portion 31 as it reaches the base side of the fitting projecting portion 31 . It is connected to the base inclined surface 34 through a cylindrical side wall portion 38 of 31 (see FIG. 2(B)).

The inclined opening surface 43 of the fitting recess 41 is recessed in a substantially mountain-like cross section so as to narrow inwardly in the side wall portion of the fitting recess 41 itself, forming a groove along the circumferential direction. A side depression 45 is formed. The recessed portion 45 has an inclined surface that gradually widens outward from the fitting recess 41 as it reaches the bottom side of the fitting recess 41 . It is connected to the bottom inclined surface 42 via the side wall portion 44 (see FIG. 3(C)).

The protrusion-side protrusion 35 is divided by a plurality of protrusion-side depressions 37 formed along the fitting direction, which will be described later. It remains in its original shape, protruding toward the Similarly, the recessed portion 45 is divided by a plurality of recessed portion protruding portions 47 formed along the fitting direction, which will be described later. It remains in its original shape with a depression toward the edge. In addition, the remaining portion of the protrusion-side protrusion 35 in the fitting protrusion 31 is the recess-side protrusion 47 in the fitting recess 41 described later, and the remaining portion of the recess-side recess 45 in the fitting recess 41 is described later. It is provided at a position facing each other in the inner-outer direction with the protrusion-side recessed portion 37 of the fitting protrusion 31 .

When the fitting protrusion 31 enters the fitting recess 41, the protrusion-side protrusion 35 and the recess-side recess 45 are engaged with each other (see FIG. 8). The inclined surface of the protruding portion 35 and the inclined surface of the recessed portion 45 on the side of the concave portion are substantially in contact with each other, so that the fitting convex portion 31 is held in the fitting concave portion 41 (FF in FIG. 7). end view).

In other words, on the side wall of the fitting projection 31, a plurality of projection-side projections 36 protruding outward along the fitting direction are provided at the central position of the fitting projection 31. are arranged at predetermined intervals along an imaginary circle centered at . The projection 35 is so to speak left inside the projection 36, and as shown in FIG. The edge of the side projecting portion 35 having the maximum diameter, which has an arc shape along the circumference of the virtual circle, is located between the adjacent projecting portion side projecting portions 36 on both sides of the projecting portion side projecting portion 36 itself. The side wall portion forms an arcuate projection-side depression 37 that is recessed inwardly of the fitting projection 31 .

The projection-side recessed portion 37 is formed in a groove shape along the fitting direction from the top portion of the top inclined surface 32 of the fitting projection portion 31 to the base inclined surface 34 portion. The protrusion-side protrusion 35 formed along the circumferential direction of the side wall of the fitting protrusion 31 itself is intermittently divided, and the protrusion-side protrusion left in the protrusion-side protrusion 36 is so to speak. The portion 35 remains in its original shape in a state of protruding outward from the fitting convex portion 31 . In addition, the remaining portion of the projection-side projecting portion 35 is positioned and arranged so as to face the recess-side projecting portion 47 of the fitting recess 41 .

On the other hand, on the side wall of the fitting recess 41, a plurality of recess-side recesses 46 recessed along the fitting direction toward the inside of the fitting recess 41 are formed around the center of the fitting recess 41. By arranging them at predetermined intervals along a virtual circle similar to the virtual circle of the fitting convex portion 31 , intermittent recessed portion 45 is formed. As shown in FIG. 3, the recessed portion 46 has an arc shape along the circumference of an imaginary circle, with the far end of the recessed portion being the edge of the minimum diameter of the recessed portion 45 when viewed from the top. Between the adjacent concave-side concave portions 46, adjacent side wall portions of the concave-side concave portions 46 themselves form an arc-shaped concave portion that protrudes outward from the fitting concave portion 41. It is a projecting portion 47 . That is, the recess-side protruding portion 47 protrudes outward from the side wall portion of the fitting recess 41 itself, and extends along a virtual circle centered on the center position of the fitting recess 41 at predetermined intervals. array is formed in .

The recess-side protruding portion 47 is formed from the opening end of the opening sloped surface 43 to the opening side end of the bottom sloped surface 42 . In addition, the recess-side protruding portion 47 is formed in a groove shape along the fitting direction from the opening end of the outer edge side of the opening inclined surface 43 to the opening side end of the bottom inclined surface 42 , so that the fitting recess 41 The concave-side concave portion 45 formed along the circumferential direction of the side wall of itself is intermittently divided, and the concave-side concave portion 45 portion left in the concave-side concave portion 46 is inside the fitting concave portion 41 . It remains in its original form, protruding toward the direction of the wall. In addition, the remaining portion of the concave portion side recessed portion 45 is positioned and arranged so as to face the convex portion side recessed portion 37 of the fitting convex portion 31 .

In the illustrated example, both the fitting convex portion 31 and the fitting concave portion 41 are formed in a circular shape when viewed from the top, but the present invention is not limited to this. , the recessed portions 46 and the protruding portions 47 on the recessed portion side are the same in number and arranged on a virtual circle at regular intervals of, for example, 45 degrees, for a total of 8 pieces, but the present invention is not limited to this.

When the fitting projections 31 enter into the fitting recesses 41 and are fitted to each other, the projection-side projections 36 engage the recess-side recesses 46 adjacent to each other in the fitting recesses 41, as shown in FIG. The center line of the projection-side protrusion 36 and the center line of the recess-side protrusion 47 are arranged so as to be guided and positioned in the recess-side protrusion 47 between them. At the same time, the corner portions of the projection-side protrusions 35, which are the outer side surfaces on both sides of the protrusion-side protrusions 36, abut against the inner side surfaces on both sides of the recess-side protrusions 47, so that the protrusion-side protrusions 36 protrude on the recess side. The portion 47 is engaged so as to be pushed open in the middle.

Further, when the fitting protrusion 31 enters and is fitted into the fitting recess 41, the protrusion-side recess 37 of the fitting protrusion 31 and the recess-side recess 46 of the fitting recess 41 are projected. The center lines of the recessed portion 46 and the recessed portion 37 are aligned so that the recessed portion 46 is guided in the recessed portion 37 . In this way, the mated fitting causes a positional deviation in the circumferential direction between the fitting projection 31 and the fitting recess 41 together with the mutual fitting of the projection 36 on the recessed side and the projection 47 on the recessed portion. It is designed to fit securely and smoothly.

At this time, as shown in the figure, the corners of the protrusions 35 on both sides of the protrusions 36 and the corners of the depressions 45 on both sides of the depressions 46 Each of them is formed in an obtuse angle when viewed from the plane, and the inner surface of each of the recessed portion side protrusion 47 and the convex portion side recessed portion 37 is formed in an arc shape, and the obtuse angle corner portion forms the arcuate side surface. By forcibly locking them so as to widen them slightly, the fitting convex portion 31 and the fitting concave portion 41 can be in a more firmly fixed state (see FIG. 4).

Further, as shown in the figure, the maximum width portion of the projection-side protrusion 35 seen from the plane inside the projection-side protrusion 36 is It is made slightly larger than the inner width of the recessed portion 45 on the recessed portion side. Similarly, the maximum width portion of the recessed portion 45 in the recessed portion 46 as viewed from above is made larger than the inner width of the projecting portion 37 . In this way, when the fitting protrusion 31 enters the fitting recess 41, the protrusion-side protrusion 36 and the recess-side protrusion 47 are arranged on both sides of the protrusion-side protrusion 35 and the recess-side protrusion 47, respectively. The recessed portions 45 are engaged with each other along the fitting direction.

Next, the fitting state by the fitting means 20 when the container main body 1 is covered with the lid body 11 after storing the predetermined contents T will be described. The fitting means 20 for positioning and pressing the fitting concave portion 41 of the lid 11 against the fitting convex portion 31 of the container body 1 forces them to fit together.

At the time of pressing, the projection-side projection 35 left behind in the fitting projection 31 enters the recess-side projection 47 of the fitting recess 41 together with the projection-side projection 36 so as to be positioned and guided. Then, the concave-side protruding portion 47 is pushed apart to be fitted and locked. Similarly, the remaining recessed portion 45 of the fitting recess 41 enters, along with the recessed portion 46, into the recessed portion 37 of the fitting projection 31 so as to be positioned and guided. The side recessed portion 37 is fitted and locked so as to spread.

Along with this, the protrusion-side protruding portion 35 of the intermittent circumferential arrangement in the fitting protruding portion 31 and the recess-side recess portion 45 of the intermittent circumferential arrangement of the fitting recess 41 are replaced by the protruding portion-side protruding portion. 36 and recess side projecting portions 47 are engaged with each other by partially riding over each other at the side portions thereof.

In this manner, the protrusion-side protrusion 36 and the recess-side protrusion 47 and the recess-side recess 46 and the protrusion-side recess 37 are forcibly pushed and spread along the radial direction. , and the protrusion 35 on the convex side and the recessed portion 45 on the concave side are partially engaged in the fitting direction, the fitting protrusion 31 is fitted and locked in the fitting recess 41, and the lid body 11 is connected to the container body. 1 and closes the container body 1.

In order to open the lid 11 from the container body 1, the body flange 2 and the lid body flange 12 at the position of the fitting means 20 are separated from each other so that the fitting projection 31 is moved from the fitting recess 41. You can force it out.

T... Contents 1... Container main body 2... Main body flange 10... Hinge part 11... Lid body 12... Lid body flange 20... Fitting means 31... Fitting convex part 32... Top inclined surface 34... Base inclined surface 35... Convex part Side protruding portion 36 Projecting portion 37 Protruding side recess 38 Side wall 41 Fitting recess 42 Bottom inclined surface 43 Opening inclined surface 44 Side wall 45 Recess side Recess 46 Recess side Recessed portion 47 . . . recessed portion side protruding portion

Claims (13)

A food packaging container provided with fitting means for detaching and opening or closing a container body and a lid body, wherein the fitting means is fitted to a body flange of the container body and a lid body flange of the lid body. Consisting of a fitting convex portion and a fitting concave portion provided so as to be
The protrusion-side protruding portion formed in the side wall of the fitting projection in the circumferential direction and the groove-like recess-side recess formed in the side wall of the fitting recess in the circumferential direction are aligned with each other in the fitting direction. In addition to overriding and meshing engagement,
The protrusion-side protrusions are divided at predetermined intervals by a plurality of groove-like protrusion-side depressions formed along the fitting direction of the fitting protrusions, and the protrusion-side protrusions are formed between the protrusion-side depressions. is formed, and the recessed portion is divided at predetermined intervals by a plurality of groove-shaped recessed portion-side projections formed along the fitting direction of the fitting recess, and the recessed portion-side recessed portion is formed between the recessed portion-side projections. is forming
When the fitting protrusion enters the fitting recess, the protrusion-side protrusion is guided into the recess-side protrusion, and the recess-side recess is guided into the protrusion-side recess. 1. A food packaging container, characterized in that the projecting part on the side of the side projecting part and the recessed part on the recessed part on the side of each of the side projecting parts are engaged with each other so as to get over each other and engage with each other. The remaining portion of the convex-side protrusion separated by the convex-side recess is arranged in the convex-side protrusion, and the remaining portion of the recess-side recess separated by the recess-side protrusion is arranged in the recess-side recess. The food packaging container according to claim 1. A food packaging container provided with fitting means for detaching and opening or closing a container body and a lid body, wherein the fitting means is fitted to a body flange of the container body and a lid body flange of the lid body. Consisting of a fitting convex portion and a fitting concave portion provided so as to be
The fitting projection has a projection on the side wall of the fitting projection itself, which bulges in a substantially mountain-like cross section to form a projection along the circumferential direction. The concave portion is recessed in a side wall portion of the fitting concave portion itself so as to form a recessed portion having a groove shape along the circumferential direction, which is recessed in a substantially mountain-shaped cross section, and
On the other hand, the fitting protrusion has a plurality of protrusion-side protrusions protruding outward along the fitting direction, and is arranged at predetermined intervals along an imaginary circle centered on the center position of the fitting protrusion. The recesses on the projection side are arranged between the projections on the projection side. The concave-side protruding portions that protrude toward are arranged at predetermined intervals along an imaginary circle centered on the center position of the fitting concave portion, and the concave-side protruding portions are formed between the concave-side protruding portions. is placed,
When the fitting protrusion enters the fitting recess, the protrusion on the protrusion side is guided into the protrusion on the recess side, and the protrusion on the recess side is locked so as to spread the protrusion on the recess side. 1. A food packaging container, wherein a portion of a projecting portion on the side of a projecting portion and a portion of a recessed portion on the side of a recessed portion, which are present at the side portions of each of the projecting portions, are engaged with each other so as to be engaged with each other. 4. The food packaging container according to any one of claims 1 to 3, wherein when the fitting protrusion enters the fitting recess, the recess on the side of the recess is guided into the recess on the side of the protrusion. The protrusion-side protrusion is formed on the side wall of the top of the fitting protrusion so that the side wall of the fitting protrusion itself is formed by the top inclined surface that gradually widens from the top to the base so that the diameter increases. 5. The food packaging container according to any one of claims 1 to 4, wherein the portion is bulged in a substantially mountain-like cross section so as to expand outward and is formed as a ridge along the circumferential direction. The concave-side concave portion is formed on the side wall portion of the opening of the fitting concave portion by an opening sloping surface that gradually spreads outward as it reaches the opening. 6. The food packaging container according to any one of claims 1 to 5, which is recessed in a substantially mountain-like cross-section so as to taper inward and is formed in a groove-like shape along the circumferential direction. The protrusion-side depression is formed in a base inclined surface portion formed so as to gradually expand from the top portion of the top inclined surface of the fitting protrusion to the side wall portion of the base of the fitting protrusion toward the opening side. The projection-side projecting portion formed along the circumferential direction of the side wall of the fitting projection itself is intermittently divided, and the remaining portion of the projection-side projecting portion is 7. The food packaging container according to any one of claims 1 to 6, wherein the food packaging container is provided so as to face the protrusion on the recess side of the fitting recess. The recess-side protruding portion has a plurality of recess-side recesses arranged at predetermined intervals so as to be recessed inward along an imaginary circle centered on the central position of the fitting recess. Between the recessed portions, the fitting is formed by adjacent side portions of the recessed portion itself and extends from the open end of the outer edge side of the inclined opening surface to the open end of the inclined bottom surface. The recessed portion formed along the circumferential direction of the side wall of the fitting recess itself is intermittently divided, and the remaining portion of the recessed portion is formed as a fitting protrusion. 8. The food packaging container according to any one of claims 1 to 7, which is provided so as to face the concave portion on the convex side of the portion. The recess-side projecting portion extends from the opening end of the opening inclined surface to the opening-side end of the bottom inclined surface that gradually spreads outward as it reaches the side wall portion of the bottom of the fitting recess toward the opening side. 9. The food packaging container according to any one of claims 1 to 8, wherein the food packaging container is groove-shaped along the joining direction. The respective center lines of the protrusion-side protrusion and the recess-side protrusion are aligned, and the outer surface portions of the remaining portion of the protrusion-side protrusion in the protrusion-side protrusion are the inner surfaces of the recess-side protrusion. 10. The food packaging container according to any one of claims 1 to 9, which abuts on the 11. Any one of claims 1 to 10, wherein the corner portion of the protrusion on the protrusion side left in the protrusion on the protrusion side is formed to have an obtuse angle when viewed from the top, while the side surface of the protrusion on the recess side is formed to have an arc shape. The food packaging container according to The respective centerlines of the concave-side recess and the convex-side recess are aligned, and the outer surfaces of the remaining portion of the recess-side recess in the recess-side recess are on the inner surfaces of the protrusion-side recess. 12. The food packaging container according to any one of claims 1 to 11, which is designed to abut. 13. The corner portion of the recessed portion left in the recessed portion is formed to have an obtuse angle when viewed from the plane, while the side surface of the protrusion side recessed portion is formed to have an arc shape. The food packaging container described in .

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