JP3155677B2 - Closed container with lid opening prevention function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic closed container having a lid opening preventing function for packing and selling processed foods such as seafood and wild vegetables.

[0002]

2. Description of the Related Art A sealed container with a lid opening preventing function is used to ensure the safety of food until opened by a user.
A container with a lid that is prevented from being opened by others or inadvertently in the distribution mechanism, and once opened, the lid is thereafter opened without any trouble. As an example thereof, the one described in Japanese Utility Model Laid-Open No. 7-9741 according to the present applicant can be mentioned.

[0003] The hermetically sealed container described in the above publication has a body made of hard plastic and a lid made of soft plastic, and is attached to the upper end of the peripheral wall of the body over the entire circumference of the lid. In order to prevent the lid from escaping, an annular ridge is provided on the outer peripheral surface of the upper end of the body in two upper and lower stages, and it is It is formed in a triangular cross section with a clearance angle downward, and on the edge piece of the lid is formed two upper and lower annular grooves that engage with both annular protrusions, and for opening the lid, an upper annular groove is used. A knob is provided so that the lower end of the edge piece can be cut out along.

[0004]

According to the above-described conventional closed container having a lid opening preventing function, since the body is made of a hard material such as plastic such as polystyrene, the edge of the lid is used as a method of opening the lid. Although it is easy to cut off the piece along the hard surface, there is a possibility that a trouble may occur that the body is broken or cracked due to impact from the material. Also,
Molding was also relatively difficult and costly.

[0005] The function of preventing the lid from opening is based on the engagement between the annular ridge and the annular groove in the upper and lower two stages. In addition, the use of the two-stage engagement structure has a problem that a gap that hinders sealing is easily generated between the body and the lid.

The present invention has been made in view of the above-described circumstances,
It is an object of the present invention to provide an airtight container with a lid opening prevention function which is safe because there is no risk of breakage or cracking because not only the lid but also the body is soft and there is no risk of being broken open. The purpose was.

[0007]

In order to achieve the above object, the present invention relates to a body as a container body, and an attached edge which is closely fitted to a peripheral edge of the body by being turned upside down to an upright opening edge at an upper end of the body. A lid having a piece is formed of a soft or semi-rigid plastic, respectively, and an annular protruding piece is protruded at the lower end of the standing lip of the body, thereby forming a cover edge piece on the lid. Forming a beveled groove where the outermost peripheral edge as the reversal destination falls, forming a cutout groove at the protruding base end of the annular protrusion to remove it,
A knob for cutting off the outer part was provided on the outer side, and a cutout was formed on one side of the knob to reach the cutout groove to form a closed container having a lid opening preventing function.

[0008] In addition, a step is provided at the upper end of the body so that the rising edge protrudes outward, and a projection is formed on the entire lower surface of the lid corresponding to the step upper surface of the step, Further, when a guide slope is formed on the inner peripheral surface above the step portion to guide the lid downward, and the lid is brought into close contact with the step upper surface of the step portion inside the body by its introduction force, further achieving the object. It is valid.

[0009]

[Operation] When the lid is covered and the peripheral edge piece is pushed into the upright edge of the body, the gap between the edge and the edge of the edge piece is not only tight, In this state, a finger or a nail cannot be hung on the edge of the lid to pry open. However, when the annular protruding piece forming the edging groove is cut off by the cutout groove, the outermost edge of the lid is exposed, and the lid can be opened by putting a finger on it.

When the annular protruding piece is cut off, a knob is used, but since a cutout is provided on one side thereof,
Easy to cut off. In addition, it can be seen that the package has been opened by the absence of the annular projection.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 to 6 show an embodiment, in which a closed container having a lid preventing function is a small container comprising a body 1 and a lid 3 each made of soft and inexpensive polypropylene. Of these, the body 1 is mainly provided with an opening device 5 for releasing the opening prevention function.

The body 1 is provided with a stepped portion 7 projecting outward on the entire circumference near the upper end, thereby forming a rising edge 9 on the step 7 and a lower end of the outer peripheral surface of the rising edge 9. Section L
A protruding annular protruding piece 11 is provided, and the lid 3 is attached to the rising edge 9 above the protruding piece 11. A marginal groove 12 is formed on the annular protruding piece 11 to prevent the lid 3 from being turned over.

In the lid opening device 5, a cutout groove 13 having an open bottom surface is provided at the base end of the annular protruding piece 11, and the cutout groove 13 is formed.
At one end, a knob 15 protrudes from the annular projecting piece 11 so that the annular projecting piece 11 can be cut off, and the knob 15 is formed in a downward tongue shape. Further, in order to cut off the knob 15, the annular protruding piece 11 is provided with a cutout 17 which is open downward on one side of the knob 15 and reaches the cutout groove 13. A guide groove 19 extending from the knob 15 to the cutout groove 13 is run behind the knob 15.

On the lower surface of the lid surface wall 24 corresponding to the step upper surface of the step portion 7, a ridge 21 having a V-shaped cross section is formed over the entire circumference. Since the ridge 21 of the lid 3 is received on the upper surface of the step, more reliable sealing can be obtained in the relationship between the body 1 and the lid 3. Further, a guide slope 23 having a clearance angle for guiding the lid 3 downward is provided on the inner peripheral surface of the base end portion of the rising edge 9 so that the lid 3 can be connected to the step upper surface of the step portion 7 or the rising edge. 9 is pressed into contact with the upper end surface, and escape of the lid 3 is prevented.

As the means for sealing and preventing escape, a protruding portion 25 is provided on the upper end of the upright opening edge 9 to enhance the close contact with the lid 3 at the upper end. In addition, this facilitates opening after releasing the lid opening prevention function.

The lid 3 is a shallow container having a lid wall 25 so as to hang on the stepped upper surface of the step portion 7 of the body 1, and has a reverse U-shaped cross section closely attached to the upright opening edge 9 of the body 1. It has a shaped edge piece 27 in the shape of a letter. And, as mentioned above,
In relation to the upper surface of the step portion 7 and the guide slope 2
3. It has a close contact portion with the rising edge 9. Further, an outermost peripheral edge 29 that fits in the beveled groove 12 is formed at an outer lower end of the attached edge piece 27 so as to protrude outward.

In the circulation mechanism, since the outermost peripheral edge 29 of the lid 3 has fallen into the marginal groove 12 of the body 1 (the state shown in FIGS. 1, 2, 3, 4, and 5), In order to open the lid 3, a fingertip or a nail cannot be hooked on the outermost peripheral edge 29, thereby preventing a risk of being opened. However, when the annular protruding piece 11 is cut off and the outermost peripheral edge 29 of the lid 3 is exposed as shown in FIG. 6, the lid 3 can be opened by hanging a finger there.

FIG. 7 shows another embodiment. In this case, the lid surface wall 25 is located at a relatively higher position, and has an annular leg 31 around and in close contact with the step upper surface of the step portion 7. .
Also in this case, the lid 3 can be opened by cutting the annular protruding piece 11 by the cut groove 13. In this embodiment, the annular leg 31 of the lid 3 is formed thicker than the other lid surface wall 25 of the lid 3. This is because if the annular leg is thin when the lid is removed from the mold, the annular leg is easily deformed inward and the mold is easily removed. In such a case, the inner wall of the body 1 and the lid 3 are removed.
This is because there is a possibility that the adhesion to the annular leg 31 may not be obtained and a problem may occur in the hermeticity.

[0020]

As described above, according to the closed container having the lid opening preventing function of the present invention, the following excellent effects can be obtained.

Since not only the lid but also the body is formed of a soft or semi-rigid plastic, there is no trouble of breaking or cracking in the distribution mechanism in which the food is packaged, and it can be provided at low cost. Since the lid is prevented from being unintentionally opened by the lid prevention function, the food can be safely packaged and delivered to the consumer.

Regarding the lid opening preventing function, the lid cannot be pry open from the edge because the outermost peripheral edge of the lid has fallen into the marginal groove formed by the annular projection provided on the body. But,
Since the annular protruding piece can be cut out of the body material along the cutout groove, opening can be performed by cutting off the annular protruding piece. In addition, although the annular protruding piece can be easily cut off, it can be seen that the cutout has been opened, which is also suitable for safe packaging of food.

At the upper end of the body, a step is provided at which the rising edge protrudes outward, and the lower surface of the lid surface wall or the lower surface of the annular leg corresponding to the step upper surface of the step extends over the entire circumference. When the ridge is formed (claim 2), the lid is more securely adhered to the body, and is more suitable for safe packaging of food.

[Brief description of the drawings]

FIG. 1 is a perspective sectional view showing a main part of a sealed container in a state where a lid opening preventing function is provided.

FIG. 2 is a front view showing the closed container with the lid opening preventing function.

FIG. 3 is a bottom view showing the closed container with the lid opening preventing function.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a sectional view taken along line BB of FIG. 1;

FIG. 6 is a cross-sectional view of a main part of a portion corresponding to FIG. 4 and showing a state where a lid opening prevention function is omitted.

FIG. 7 is a sectional view corresponding to FIG. 4, showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 3 Lid 7 Stepped part 9 Standing-up edge 11 Annular protruding piece 12 Beveling groove 13 Cutout groove 15 Knob 17 Cutout 21 Protrusion 23 Guide slope 27 Adhering edge piece 29 The most peripheral edge

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 43/10-43/16 B65D 49/12

Claims (2)

(57) [Claims] 1. A body having a body as a container body and a lid having an adhered edge piece that is closely fitted to an upright edge of an upper end of the body at a peripheral edge thereof are formed of soft or semi-rigid plastic, respectively. By projecting an annular protruding piece at the lower end of the rising edge of the body, an edge-dropping groove is formed on which the outermost peripheral edge as an inversion destination of the attached edge piece of the lid falls, A notch for removing it is formed at the protruding base end of the protruding piece, and a knob for cutting off is formed on a part of the outside, and a cut is formed on one side of the knob to reach the notch. A sealed container with a lid opening prevention function, which is provided. 2. An upper end of the body is provided with a stepped portion in which an upright edge protrudes outward, and a lower surface of a lid corresponding to a stepped upper surface of the stepped portion is formed with a ridge over the entire circumference. A guide slope is formed on the inner peripheral surface above the step to guide the lid downward, and the introduction force causes the lid to be in close contact with the step upper surface of the step inside the body. Item 7. A closed container with a lid opening preventing function according to Item 1.