JP2504764Y2 - Container with connecting part - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having a connecting portion for storing foods such as confectionery, eggs and fruits.

[0002]

2. Description of the Related Art Various plastic containers have been proposed in which a container body and a lid are connected via a connecting portion. For example, JP-A-57-77440 and JP-A-60-6
2012 and Japanese Utility Model Laid-Open No. 60-123309 propose a container in which the bending strength of the connecting portion is reduced by forming a perforated cut at the connecting portion between the container body and the lid. There is. However, when packaging foodstuffs such as eggs with an automatic packaging machine, the container still has a large elastic force at the connecting portion. Therefore, even if the lid is closed during packaging, it is difficult to smoothly perform the packaging work because the lid is opened from the container body due to the elastic force of the connecting portion.

Further, Japanese Utility Model Laid-Open No. 15449/1990 discloses that
Join both ends of the connecting part and 1 / the container width at the center of the connecting part.
A container having four or more cutouts has been proposed. In this container, the repulsion force between the container body and the lid by the joint is smaller than the dead weight of the lid by the cutout portion.
However, in this container, the repulsive force between the container body and the lid is governed by the weight of the lid, the thickness of the joint, the size of the cutout, and the like. In some cases, the repulsive force between the container body and the lid cannot be reduced sufficiently.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a container having a connecting portion, which can maintain a closed state even when the opening of the container body is closed by the lid and is excellent in packaging workability. To do.

[0005]

To achieve the above object, the present invention is a container having a connecting portion for connecting a container body and a lid, wherein the outer surface of the connecting portion is thicker than the connecting portion. A container having a connecting portion, in which a plurality of small groove portions and a plurality of thin portions or cutout portions having a thickness smaller than that of the concave groove portions are alternately formed, is provided.

[0006]

According to the present invention having the above structure, a plurality of concave groove portions having a smaller thickness than the connecting portion and a plurality of thin wall portions or cut portions having a smaller thickness than the concave groove portion are alternately formed in the connecting portion. Therefore, the bending strength of the connecting portion can be reduced. Moreover, the concave groove portion is provided on the outer surface, not the inner surface of the connecting portion,
Since the thin portion or the cutout portion is formed, when the lid body closes the opening of the container body, the force in the direction of separating the lid body from the container body, that is, the elastic force of the connecting portion can be reduced. More specifically, when the concave groove or the like is formed on the inner surface of the connecting portion and the connecting portion is bent, the bending of the connecting portion is restricted by the thin portion located on the outer surface side of the connecting portion, and the lid body has: An elastic force acts in a direction away from the container body. On the contrary,
When forming the concave groove or the like on the outer surface of the connecting portion, the bending of the connecting portion is not restricted by the concave groove or the like, the lid body can be smoothly rotated in the closing direction, and the elastic force of the connecting portion that acts on the lid body. The power can be significantly reduced. Therefore, the elastic force of the connecting portion can be easily and surely made smaller than the own weight of the lid, and the closed state by the lid can be maintained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the present invention, and FIG. 2 shows a process in which a container main body and a lid are opened at an angle of about 180 ° and a lid is closed. 1 is a cross-sectional view showing the recessed groove portion of FIG. 1, and FIG. 3 is a cross-sectional view showing the thin-walled portion of FIG. 1 in the process of transitioning from a state where the container body and the lid are opened at an angle of about 180 ° to a state where the lid is closed. is there.

The container comprises a container body (1) having a housing recess (2), a lid (3) having a housing recess (4), the container body (1) and a lid (3). And a connecting part (5) for connecting and. Further, flange portions (6) and (7) that are in contact with each other are formed on the peripheral portions of the container body (1) and the lid body (3).

The container is vacuum-molded with a sheet of plastic such as olefin polymer such as polypropylene, polystyrene, styrene-butadiene copolymer, styrene polymer such as high-impact polystyrene, polyester, polyvinyl chloride and the like. , Can be integrally formed by a molding method such as compression molding. The thickness of the sheet can be selected according to the type of plastic. The plastic sheet is, for example, 100 μm
It can be formed to a thickness of about 0.7 mm, preferably about 150 μm to 0.5 mm.

In order to reduce the elastic force of the connecting part (5), a plurality of concave groove parts are formed along the outer surface of the connecting part (5).
(8) and a plurality of thin cut portions (9) are alternately formed. In addition, in order to increase the connecting strength, it is preferable that the groove portions (8) are formed at both ends of the connecting portion (5). In this example, including the grooves (8) at both ends of the connecting part (5),
Five recessed groove portions (8) and four cut thin-walled portions (9) are respectively formed in a ratio of about 1: 5 to 15 (length ratio). The thickness of the groove portion (8) is about 40 to 90%, preferably about 60 to 85% of the connecting portion (5). The thickness of the thin portion (9) is 10 to 50% of the connecting portion (5), preferably 20 to 40.
%. The regions of the connecting portion (5) excluding the thin portion (9) are connected by the plurality of concave groove portions (8), so even if the bending strength of the connecting portion (5) is reduced, the container body ( 1)
The connection strength between the lid and the lid (3) does not deteriorate so much.

Further, as shown in FIG. 2, the side wall of the concave groove portion (8) is formed so as to have an outward diameter. That is, in the state where the lid body (3) is opened at an angle of about 180 ° with respect to the container body (1), the concave groove portion (8) is formed in a trapezoidal cross section, and the side wall thereof is, for example, 10 to 70. The diameter is increased outward at an angle θ1 of 15 °, preferably 15 to 60 °. When the width W1 of the bottom of the groove (8) is 1, the length L1 of the side wall is, for example, 1 to 4, preferably 1.5 to
It can be formed to about 3.5.

Further, as shown in FIG. 3, the thin portion
The side wall of (9) is formed by gradually expanding the diameter outward.
That is, in a state where the lid body (3) is opened at an angle of about 180 ° with respect to the container body (1), the thin-walled portion (9) has an acute angle portion (9a) on the inner side and an obtuse angle portion (9) on the outer side. 9b) and gradually expand outward. The side wall of the acute angle part (9a) is formed by expanding the diameter outward at an angle θ2 of, for example, 5 to 60 °, preferably about 10 to 45 °, and the side wall of the obtuse angle part (9b) is
For example, it is formed by expanding outward at an angle .theta.3 of 30 to 120.degree., Preferably 45 to 90.degree .. When the length L2 of the side wall of the acute angle portion (9a) is 1, the length L3 of the side wall of the obtuse angle portion (9b) is, for example, 0.2 to 1.5, preferably about 0.5 to 1. Can be formed.

In such a container, the plurality of concave groove portions (8) and the plurality of thin wall portions (9) reduce the repulsive force between the container body (1) and the lid body (3) by the connecting portion (5). To be done. Further, since the concave groove portion (8) and the plurality of thin-walled portions (9) are formed on the outer surface of the connecting portion (5), the bending of the connecting portion (5) is not restricted, and the lid body (3) can be smoothly moved. Can be turned to. In particular, a plurality of recessed grooves
Since the side walls of (8) and the plurality of thin-walled parts (9) are expanded outward, the flexibility of the connecting part (5) can be further increased,
The elastic force of the connecting part (5) can be further reduced. Therefore, the lid body (3) can keep the opening of the container body (1) closed, and food items can be smoothly packaged by an automatic packaging machine or the like.

When the groove and the thin portion are formed on the inner surface side of the connecting portion (5), the bending of the connecting portion (5) is prevented by the thin portion located on the outer surface side of the connecting portion (5). It is difficult to maintain the lid in a closed state because a force is exerted in the direction in which the lid is regulated and moves away from the container body.

FIG. 4 is a schematic perspective view of an essential part of another embodiment of the present invention, and FIG. 5 shows a state in which the container body and the lid are opened at an angle of about 180 ° and the lid is closed. 4 is a cross-sectional view showing the recessed groove portion of FIG. 4 in the process of performing, and FIG. 6 shows the cutout portion of FIG. 4 in the process of transitioning from the state where the container body and the lid are opened at an angle of about 180 ° to the state where the lid is closed. FIG.

In this example, the connecting portion (15) for connecting the container body (11) and the lid body (13) has a plurality of recessed groove portions (18) similar to those described above.
And a plurality of cutouts (19) formed through the connecting part (15)
The concave groove portions (18) and the cutout portions (19) are alternately formed.

The cutting section (19) is used to
The elastic force of the connecting portion (15) can be made smaller than that of the embodiment shown in FIG. Therefore, rather than the length of the groove (18), the cutout (1
The length of 9) may be small. For example, when the length of the concave groove portion (18) is 1, the length of the excision portion (19) can be formed to be 2 to 10, preferably 3 to 7. When the width W11 of the bottom of the groove (18) is set to 1, the length L of the side wall of the groove (18) is L.
11 is, for example, 0.2 to 1, preferably 0.3 to 0.7
It can be formed to about 5.

Further, as shown in FIG.
The outer side inner wall of (19) is formed by gradually expanding the diameter outward. That is, in this example, in the state where the lid body (13) is opened at an angle of about 180 ° with respect to the container body (11), the cut portion (19) has an acute angle portion (19a) and an obtuse angle portion (19b). It has an acute angle portion (19c), and the diameter is increased in three stages from the inner side to the outer side. The internal side wall of the cutout portion (19) is, for example, an acute angle portion (19
The angle θ11 of a) is about 5 to 90 °, and the angle θ1 of the obtuse angle portion (19b) is
2 is about 45 to 120 °, and the angle θ13 of the acute angle portion (19c) is 30
It can be formed at about 90 °. When the length of the side wall of the acute angle portion (19a) is 1, the length of the side wall of the obtuse angle portion (19b) is, for example, about 0.5 to 1.5, and the length of the acute angle portion (19c). Can be formed to, for example, about 0.5 to 2.

In such a container, since the bending strength and elastic force of the connecting portion (15) can be reduced by the excision portion (19), food products and the like can be stored in the automatic packaging machine in the same manner as in the above embodiment. Can be smoothly packaged.

The lengths and intervals of the plurality of thin-walled portions or cut-off portions can be appropriately selected according to the type of plastic constituting the container, the thickness of the recessed groove portion, the angle of the side wall of the recessed groove portion, and the like. It is preferable that concave groove portions are formed on both sides. The number of thin portions or cutout portions can be selected according to the size of the container and the like, and is, for example, about 2 to 10. Also,
Both the thin portion and the cut portion may be formed along the outer surface of the connecting portion. The recessed groove portion and the thin wall portion and / or the cut portion need not be formed independently of each other, and the thin wall portion and / or the cut portion may be formed in the recessed groove portion formed along the connecting portion.

The cross-sectional shape of the recessed groove is not limited to the trapezoidal shape, but may be curved or V-shaped. The side wall of the recessed groove portion, the side wall of the thin portion and / or the cut portion does not necessarily have to be expanded outward, but the elastic force of the connecting portion is further reduced and the lid is kept closed. In order to achieve this, it is preferable that the diameter is expanded outward. The angle of the side wall of the recessed groove portion and the angle of the side wall of the thin portion and / or the cutout portion can be appropriately selected within a range capable of reducing the elastic force of the connecting portion. Further, it is preferable that the side wall of the thin portion and / or the cut portion is formed so that the diameter thereof is expanded outward at least stepwise. The sidewall may be formed by appropriately combining an acute angle portion and an obtuse angle portion.

Further, a conventional locking portion or fitting portion for locking or fitting the container body and the lid may be formed at an appropriate place such as the flange portion of the container shown in the above embodiment. . Further, it is not always necessary to form the accommodating recess in the lid. Further, the thicknesses of the concave groove portion and the thin portion are not limited to the values exemplified above, and can be selected according to the material of the container and the like.

The present invention is preferably applied to a plastic container, and the plastic may be foamed.

[0025]

According to the container of the present invention, a plurality of concave groove portions having a smaller thickness than the connecting portion and a plurality of thin wall portions or cut portions having a smaller thickness than the concave groove portion are formed on the outer surface of the connecting portion. Therefore, even if the opening of the container body is closed with the lid, the closed state can be maintained, and the packaging workability is excellent.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention.

FIG. 2 is a view in the process of transitioning from a state in which the container body and the lid are opened at an angle of about 180 ° to a state in which the lid is closed.
It is sectional drawing which shows the concave groove part.

FIG. 3 is a view in the process of transitioning from a state where the container body and the lid are opened at an angle of about 180 ° to a state where the lid is closed.
It is sectional drawing which shows the thin part.

FIG. 4 is a schematic perspective view showing a main part of another embodiment of the present invention.

FIG. 5 is a view in the process of transitioning from a state in which the container body and the lid are opened at an angle of about 180 ° to a state in which the lid is closed.
It is sectional drawing which shows the concave groove part.

FIG. 6 is a view in the process of shifting from a state in which the container body and the lid are opened at an angle of about 180 ° to a state in which the lid is closed.
It is sectional drawing which shows the excision part.

[Explanation of symbols]

 1, 11 Container main body 3, 13 Lid body 5, 15 Connecting part 8, 18 Recessed groove part 9 Thin wall part 19 Excision part

Claims (3)

(57) [Scope of utility model registration request] 1. A container having a connecting portion for connecting a container body and a lid, the outer surface of the connecting portion having a connecting portion more than the connecting portion.
A plurality of recessed groove portion having a small thickness, thickness than the front Symbol groove portion is thin and a plurality of thin portions or cutouts are formed alternately, the container having a connecting portion. 2. The container having a connecting portion according to claim 1, wherein the thickness of the concave groove portion is 40 to 90% of the connecting portion, and the thickness of the thin portion is 10 to 50% of the connecting portion. 3. The connecting portion according to claim 1, wherein the side wall of the recessed groove portion is formed so as to have an outwardly expanded diameter, and the side wall of the thin portion or the cutout portion is formed so as to have an outwardly expanded diameter. Container with.