JP2000159252A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily, surely and stably fit a lid body without generating any positional deviation between the lid body and a container body in a series of operations with the turning of the lid body with a hinge as a pivot in the lid body integratedly connected to the container body through the hinge. SOLUTION: A body locking part 9 is provided on an end part on a hinge 21 side of a container body 2 having a storage part 7, and a lid body locking part 15 to be engaged with the body locking part 9 of the container body 2 in a fitted condition is provided on the end part on the hinge 21 side of a lid body 11 which is turnably connected to one side of the container body 2 to cover its opening.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container comprising a container body and a lid fitted to the container body, for storing foodstuffs and the like, and particularly to a packaging container in which the lid is easily fitted. It concerns a container.

[0002]

2. Description of the Related Art Conventionally, as this kind of packaging container, there is a container in which a container body and a lid are connected by a hinge, and the lid is fitted to the container body by rotating about the hinge. . The packaging container can be integrally manufactured by forming a synthetic resin sheet into a sheet. The engagement between the two is performed by, for example, forming a locking projection on the free end side of the container body and an undercut at a position corresponding to the locking projection on the free end side of the lid. Is formed, and the locking projection of the main body container and the locking recess of the lid are mutually locked when the lid is rotated via the hinge.

[0003]

However, this type of conventional packaging container locks a locking projection and a locking recess formed respectively on the free ends of the container body and the lid. The curvature of the thin hinge is not constant, and
Since the locking is performed at a position distant from the hinge at the center of rotation, a positional shift easily occurs between the locking protrusion and the locking recess at the time of fitting, and a series of operations with the rotation of the lid. In some cases, the two could not be locked. That is, a positioning operation in the case of misalignment may be required, and particularly in a factory or the like where a large amount of packaging work is performed, the work efficiency is reduced.

[0004] Further, since the locking is performed only at the free end, the floating may occur between the container body and the lid at the hinge end, and the fitting state may be unstable.
Even if the structure can be fitted at the hinge-side end, it will not fit unless a separate manual pressing operation is performed.

Further, in order to fit the lid and the container body on the free end side as well, it is necessary to manually push the plurality of locking projections and locking recesses respectively.

Therefore, the present invention relates to an apparatus in which a container body and a lid are integrally connected via a hinge, and the container body and the lid are connected to the container body by a series of operations including rotation of the lid about the hinge. An object of the present invention is to provide a packaging container in which a lid can be easily, reliably, and stably fitted without causing displacement.

[0007]

According to a first aspect of the present invention, there is provided a packaging container rotatably connected to one side of the container body via a hinge integrally formed with the container body having a storage portion. A lid body that is openably fitted to the container body to cover the opening, a body locking portion provided at a hinge side end of the container body, and a hinge body provided at the hinge side end of the lid body. And a lid locking portion that engages with the main body locking portion of the container main body when fitted.

According to a second aspect of the present invention, in the packaging container, one of the main body locking portion of the container main body and the lid locking portion of the lid is linearly convex along the hinge. And one of them is formed in a straight concave shape along the hinge.

According to a third aspect of the present invention, the width of the hinge according to the first or second aspect is gradually increased from one end to the other end.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A packaging container according to an embodiment of the present invention will be described below with reference to FIGS. In the figure, a packaging container 1 connects a container body 2 and a lid 11 with a hinge 21 and rotates about the hinge 21 to fit the lid 11 into the container body 2 and close the lid. And is integrally formed of a synthetic resin sheet or the like. The container body 2 is formed in a box shape having an opening 3 on the upper surface, a flange 4 is provided in a horizontal direction along a peripheral edge of the opening 3, and a mountain having a substantially U-shaped cross section is formed on the entire peripheral edge. The part 5 is erected. Further, a mounting surface 6 on which an upper surface of a mountain portion 13 of the lid 11 described later is mounted is formed on the inner peripheral side of the mountain portion 5 after fitting. The inside of the lid 2 is a storage section 7 for storing foods and the like. A plurality of arc-shaped concave portions provided in the mountain portion 5 have ventilation holes 5a for communicating with the outside air.
It is what becomes. The lid 11 can be opened by pinching the knob 16 of the flange 12. On the free end side opposite to the hinge 21, at both corners and the center,
A locking projection 8 of a predetermined length slightly protruding from the storage section 7 is provided.

Further, a main body locking portion 9 which is a feature of the present invention is linearly provided along the entire length of the mountain portion 5 on the hinge 21 side so as to slightly protrude toward the housing portion 7 side. The locking projection 8 and the main body locking portion 9 can be formed simultaneously in sheet molding.

On the other hand, the lid 11 has a flange 12 projecting in the horizontal direction along the peripheral edge, and a ridge 13 having a substantially U-shaped cross section is erected on the entire peripheral edge. The peak 13
Is provided on the inner side which does not interfere with the crest 5 of the container body 2 at the time of fitting, and the flange 12 comes into contact with the tip end surface of the crest 5 of the container body 2 at the time of fitting. The plurality of arc-shaped concave portions provided in the peak portion 13 serve as ventilation holes 13a for communicating with outside air. In this lid 11, the knobs 16 at both corners of the flange 12 can be pinched and opened.

The inclined surface 13b formed on the outer peripheral side of the ridge 13 on the free end side is fitted at both corners and the center corresponding to the locking projection 8 of the container body 2 at the time of fitting.
A locking concave portion 14 having a predetermined length for engaging with the locking convex portion 8 is provided.

Further, on the hinge 21 side of the mountain portion 13, a lid locking portion 15 which is a feature of the present invention is provided in a straight line over the entire length thereof. It is formed in a concave shape capable of engaging with the portion 9. The locking projection 8 and the locking recess 14, the main body locking portion 9 and the lid locking portion 1 are provided.
5 can be easily opened and engaged by elastic force.

Next, the hinge 21 is connected to the container body 2 and the lid 1.
1 and is integrally formed with the same thickness as the container body 2 and the lid 11. However, only the hinge 21 may have a different thickness.

Next, the packaging operation of the packaging container of the present embodiment configured as described above will be described. Packaging container 1
In order to store and pack items such as foodstuffs in the container body 2 of FIG. 1, as shown in FIG. 1 to FIG. The stored items are stored in a posture facing the left side surface, and when the storage is completed, the lid 11 is rotated around the hinge 21 to fit the peripheral portion to the container body 2. 5 to 7 show a state after the completion of the packaging. At this time, the main body locking portion 9 and the lid locking portion 15 of the container main body 2 and the lid 11 near the hinge 21 are engaged first. Next, the locking projection 8 on the free end side of the container body 2 and the lid 11 engages with the locking recess 14, and the lid closing operation is completed.

Here, in the lid closing operation, first, the main body locking portion 9 close to the hinge 21 and the lid locking portion 15 are fitted to each other, whereby the curvature of the hinge 21 is determined. When fitting the locking projection 8 and the locking recess 14,
Since the distance between the hinge 21 and the locking protrusion 8 on the free end side and the locking recess 14 is regulated to a constant value, the locking protrusion 8 and the locking recess 14 are smoothly fitted by a series of rotation operations. Can be combined. Therefore, the operation of aligning the locking projection 8 and the locking recess 14 when the lid 11 rotates can be omitted.

Further, since the lid locking portion 15 and the main body locking portion 9 are provided in a straight line, if the lid 11 is rotated and closed, no other force is applied and the lid locking portion 15 and the main body locking portion 9 are engaged. The stop 15 is naturally engaged with the main body lock 9. That is, the lid locking portion 1
When the lid 5 and the main body locking portion 9 are provided to the corners of the curved shape, when the lid 11 is rotated and closed, there is less room for fitting than when the lid 11 is closed, so the lid at the corner is not provided. The locking portions 15 must be placed on the upper portions of the main body locking portions 9 at the corresponding corners, and the corners must be separately forcibly pressed down by hand, which requires extra labor and trouble. However, the lid locking portion 1
If the main body 5 and the main body locking portion 9 are provided in a straight line, the labor and the number of operations can be reduced.

On the other hand, opening the packaging container 1 can be easily carried out by pinching the knob 16 and pulling it apart.

As described above, in the packaging container of the present embodiment, the main body locking portion 9 is provided at the hinge 21 side end of the container main body 2 having the storage portion 7, and the hinge 21 formed integrally is provided.
Engages with the main body locking portion 9 of the container body 2 when fitted to the hinge 21 side end of the lid 11 which is rotatably connected to one side of the container body 2 and covers the opening 3 via A lid locking portion 15 is provided.

Therefore, the lid closing operation in packaging is
First, the position of the free end side is determined by the engagement between the main body locking portion 9 on the hinge 21 side and the lid locking portion 15, so that the conventional position between the container main body 2 and the lid 11 is established. This eliminates the need for positioning work, and improves operability and work efficiency. In addition, since a portion close to the hinge 21 is locked, a stable fitting state can be obtained.

Next, a packaging container according to another embodiment of the present invention will be described with reference to FIGS. In the figure, the hinge 21 is formed such that the width at one end is narrower and is continuously enlarged toward the other end. Also,
In the locking projection 8a of the container body 2 on the free end side on the right side in FIG. 8 in which the width of the end of the hinge 21 is narrow, an inclined side wall 10 is formed between the peak 5 and the locking projection 8a. Have been. Other configurations are the same as those of the above-described embodiment.

In this embodiment, the lid 11 is rotated and closed in such a manner that the packer faces the right side of the packaging container 1 opposite to the above-described embodiment in FIG. At this time, the main body locking portion 9 of the container main body 2 and the lid locking portion 15 of the lid 11 are engaged first from the right end portion where the width of the hinge 21 is reduced, and thereafter, the engagement becomes the width. Spreads toward the wider left end of the. Therefore, since the main body locking portion 9 of the container main body 2 and the lid locking portion 15 of the lid 11 are sequentially locked from one end side, it is easy to fit.

When the lid 11 is rotated and closed by pinching the right knob 17 with the narrow width of the hinge 21 shown in FIG. 8, the locking recess 14 provided on the left knob 18 is provided. Since the hinge 21 is on the side where the width of the hinge 21 is wide, the hinge 21 can be fitted into the locking projection 8 of the container main body 2 not just from directly above but diagonally from the side. For this reason, this knob 18
Can be omitted, and the knobs 17 and 18 can be fitted at once.

Further, since the inclined side wall 10 is formed between the crest 5 and the locking projection 8 in the locking projection 8, FIG.
As shown in FIG. 3, when the container body 2 is rotated downward with the bent portion 10a of the mounting surface 6 as a fulcrum from the state where the lid 11 is closed to open the container body, the bent convex portion 8a extends from the bent portion 10a. Since the distance to the container becomes long, the torque increases, and the flange 4 of the container body 2 can be pinched and rotated with a light force to release the lock.

In each of the above embodiments, the main body 2 is provided with the convex main body locking portion 9 and the lid 11 is provided with the concave main body locking portion 15. The concave body locking portion 9 may be provided, and the lid 11 may be provided with a convex lid locking portion 15.

Further, the main body locking portion 9 of the container main body 2 and the lid locking portion 15 of the lid 11 do not necessarily have to be formed along the hinge 21 over the entire length, but may be formed partially. Further, the cross-sectional shapes of the main body locking portion 9 of the container main body 2 and the lid locking portion 15 of the lid 11 do not need to be constant over the entire length, but are formed by alternately forming convex portions and concave portions in the length direction. It may be.

The engagement between the main body locking portion 9 of the container main body 2 and the lid locking portion 15 of the lid 11 is not necessarily limited to the means of fitting the concave and convex.

[0029]

As described above, the packaging container of the present invention
A main body locking portion is provided at a hinge side end of the container main body having a storage portion, and a lid body rotatably connected to one side of the container main body via an integrally formed hinge and covering the opening thereof. At the hinge side end, a lid locking portion is provided which engages with the main body locking portion of the container main body at the time of fitting. Therefore, in the lid closing operation in packaging, the locking position on the free end side is determined by the engagement of the main body locking portion on the hinge side and the lid locking portion first, so that the container main body and the lid are connected. This eliminates the need for alignment work between the members, thereby improving operability and work efficiency. In addition, since a portion close to the hinge is locked, a stable fitting state can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state before fitting in a packaging container according to an embodiment of the present invention.

FIG. 2 is a left side view of the packaging container of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view of a main part showing a hinge part of FIG. 3;

FIG. 5 is a front view showing a state after fitting of the packaging container of FIG. 1;

FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5;

FIG. 7 is a sectional view of a main part showing a hinge part of FIG. 6;

FIG. 8 is a plan view showing a state before fitting in a packaging container according to another embodiment of the present invention.

9 is a cross-sectional view of a main part showing a locking portion on the free end side in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging container 2 Container main body 3 Opening 7 Storage part 9 Main body locking part 11 Lid 15 Lid locking part 16, 17, 18 Knob part 21 Hinge

Claims (3)

[Claims] 1. A container main body having a storage portion, rotatably connected to one side of the container main body via an integrally formed hinge, and fitted to the container main body in an openable manner to open an opening thereof. A cover, a main body locking portion provided at the hinge side end of the container main body, and a main body locking portion provided at the hinge side end of the lid body, which engages with the main body locking portion of the container main body when fitted. A packaging container comprising a lid engaging portion. 2. One of the main body locking portion of the container main body and the lid locking portion of the lid is formed in a straight convex shape along the hinge, and one of the other is formed along the hinge. The packaging container according to claim 1, wherein the packaging container is formed in a straight concave shape. 3. The width of the hinge is gradually increased from one end to the other end.
Or the packaging container according to claim 2.