JP3916229B2 - Sealed stacked container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plastic hermetically sealed stack container composed of a body and a lid that can take a stacked form when foods are packed and sold or stored.
[0002]
[Prior art]
Plastic hermetic stacked containers are frequently used for the sale of processed foods, and are commonly used for the preservation of cooked foods at home. From this use, the structure is made as tightly sealed as possible to prevent the leakage of food and the quality of the food. In addition, a thread bottom is provided on the bottom of the body and the bottom of the thread is placed on the top of the lid so that it can be stably placed and stacked anywhere. A wide recess or annular groove is formed.
[0003]
As for the sealed structure, basically, the body and the lid are coupled by elastic coupling between the ridge and the groove. Furthermore, the form used for sale may be provided with a lid opening prevention device that keeps the locked state until the consumer opens it so that the lid cannot be opened illegally in the middle. Examples thereof include those proposed in Japanese Patent Application No. 7-113958 (Japanese Patent Laid-Open No. 7-113958) related to the applicant.
[0004]
[Problems to be solved by the invention]
According to the above conventional hermetically sealed stack container, the yarn bottom is placed in a wide recess or annular groove, so that stable stacking can be achieved and stable placement on the table is possible, but the lid is opened. sometimes, the need to solve the elastic coupling between the ridges and grooves for watertightness, while having to pinch simultaneously the body and the lid with one hand, at an operation such as increasing turning the lid from one end with the other hand Since the thread bottom strongly hits the hand holding the pinch, even if it is not so painful, it will be stimulated against comfort. In particular, when the lid-opening prevention device is provided, the yarn bottom hits strongly because of its particularly strong relationship for the unlocking operation.
[0005]
Also, as seen in many containers, the bottom is flat, but especially when you put foods such as soup or kneaded food, when you want to wipe the remaining residue with a spoon, turn the spoon evenly over the wide bottom. It was necessary to move, and even so, it was difficult to take out the last remaining because the gathering was bad.
[0006]
In view of the above circumstances, the present invention is a container that can be stably placed and stacked without a protruding thread bottom, and when the user opens the lid with the other hand while holding it with one hand. The object of the present invention is to provide a hermetically sealed container that does not give a strong stimulus to the handle and can completely scrape the remainder even if it is a soup or kneaded product.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention comprises a body and a lid formed of plastic so as to closely fit each other, and by forming a curved upper bottom wall in which the central part is raised, In addition, an annular convex edge bottom having a round cross-section in which an inclined side wall and a curved upper bottom wall are continuously rounded is provided instead of the yarn bottom,
(1) The cover is formed with a recess that falls from the upper surface of the periphery along the periphery so that the ring-shaped convex bottom of the body can be fitted and contacted, and the contact is circular in the cross section of the body and the cover. Formed so that the bottom surface of the recess is point-contacted as a tangent to the rounded surface of the bottom of the convex edge, and further formed an angle-free corner with respect to the sloped surface around the concave bottom surface (claim 1),
(2) The lid is formed with a convex surface portion of the lid wall on which the curved upper bottom wall is fitted at the same time as receiving the annular convex bottom of the body in contact with the surrounding upper surface, and the contact is formed in the cross section of the body and the lid. The upper surface of the lid is formed to be point contact with the rounded bottom surface of the annular convex edge as a tangent line (Claim 2).
The present invention provides a hermetically stacked container as described in (1) or (2) above.
[0008]
[Action]
According to the above configuration, the bottom of the body is formed with an annular convex edge, and when placed on a table or the like, this serves as a thread bottom and is not only stable, but also has a disadvantage of being in close contact with the table surface. Absent. For stacking , not only the annular convex bottom or curved upper bottom wall of the body fits into the concave or lid convex portion of the lower container lid, but also the annular convex bottom instead of the thread bottom is the bottom of the lid concave or Point contact in cross section on the upper surface of the circumference, and overall, the annular line contact along the circumference is stably maintained from the rib shape associated with the rounded cross section of the annular convex bottom, so that the stack is stably held so as not to shift. The Even when the lid is opened and closed strongly, it is not stimulated because the bottom of the annular convex edge is a rounded surface, and it can be gripped stably by placing it on the hand. Furthermore, since the inside of the body is annularly lowered in the surroundings, even if there is little remaining food in the contents, it can be easily taken out to the end by stroking a spoon along the surroundings.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, by forming the curved upper bottom wall 3 in the body 1, the annular convex edge bottom 7 is provided in place of the yarn bottom, and the lid 2 is provided with the recess 8 or the lid wall convex surface portion 27, thereby exhibiting the above-described action. As a result, the planar shape of the container is not particularly limited. Examples thereof include a polygon such as a circle, an ellipse, a rectangle, a hexagon, and an octagon, and a shape close to a circle. A polygon etc. are mentioned, FIG. 3 shows the square near circular. However, since the annular convex edge bottom 7 instead of the yarn bottom needs to be provided in a slightly smaller annular shape at a place where it enters from the periphery, the side wall 5 of the body 1 needs to be inclined.
[0010]
The presence or absence of the lid opening prevention device T is not particularly problematic. Therefore, the lid opening prevention device T is not necessary in the form of simply storing food in the refrigerator at home and taking it out as a lunch box. However, when the lid opening prevention device T is present (Claim 3, Example), the handle is particularly strongly hung on the bottom for the release operation, but the annular convex edge bottom 7 is rounded. Unlike the case where there is a thread-like thread bottom, the rounded annular convex bottom 7 works particularly effectively in that no pain is felt. In addition, about the structure of the lid opening prevention apparatus T, although two examples were shown in the Example, there can be other various forms.
[0011]
【The invention's effect】
As described above, according to the hermetically sealed container of the present invention, the body has a rounded convex edge bottom as an alternative to the protruding thread bottom, so that the lid can be opened and closed with the other hand while holding it with one hand. The handle can be used comfortably without strong stimulation, and the annular convex bottom or curved upper bottom wall is fitted into the recess of the lid or the convex surface of the lid wall so that the rib-shaped annular convex bottom is Since it can be reliably received on the lid with an annular line contact, it can be stably stacked, and even the soup can be conveniently removed completely so that it can be used without waste. Has an excellent effect.
[0012]
【Example】
Next, an embodiment of the present invention will be described with reference to the drawings.
[0013]
The drawings show two examples implemented as containers used for packing and selling processed foods. The hermetically stacked containers Pa and Pb consist of a body 1 and a lid 2 formed of transparent plastic. In plan view, each side of the regular square bulges to form a round shape that is close to a circle.
[0014]
FIG. 1 to FIG. 4 show an example of a closed type stacked container Pa according to the invention of claim 1, in which the body 1 is formed of a semi-rigid plastic and the lid 2 is formed of a hard plastic. The body 1 has an annular convex bottom 7 having a rounded round cross section between the inclined side wall 5 and the curved upper bottom wall 3 by forming the bottom wall 3 curved to the bottom. , It is formed at a position where it enters inside due to the inclination of the side wall 5. Further, the lid 2 has a wide recess 8 due to the refraction of the step 9 near the periphery, so that the body 1 of the upper container Pa fits into the recess 8 at the annular convex bottom 7 and does not shift to the step 9. It is supposed to be hung on.
[0015]
Regarding the point that does not deviate, the annular convex bottom 7 has a rib shape from its cross-sectional shape, and the stability of the shape is maintained, and with respect to the concave bottom surface 10 of the lid 2 is a point contact that is tangential in the cross section. This is because the annular line contact is reliably maintained as a whole. Further, a corner 12 between the inclined surface of the step 9 is formed as a rounded corner 12 around the bottom surface 10 of the recess. When the label R is pasted on the bottom surface 10 of the recess, the end of the label R is abutted against the corner 12 having no radius (FIG. 2).
[0016]
The body 1 and the lid 2 are formed so as to be tightly fitted so that the juice does not leak, but the lid opening prevention device T is structured together with the tightly fitted structure so as not to be illegally opened during the sale. In this case, in the body 1, a standing mouth wall 11 is formed at the upper end, a ridge 13 is projected at the lower end, and the band-shaped strip 15 is spaced from the ridge 13 through a thin-walled portion 14. It is provided in parallel with the upright wall 11. At one end of the strip 15, a cut groove 16 for cutting it is formed obliquely high and anticlockwise from the lower end edge, and a thin cut joint 18 is formed at the lower end, and the tongue piece adjacent to the counterclockwise is formed. A shaped knob 17 is projected.
[0017]
The lid 2 is provided with a hanging peripheral wall 19 fitted between the standing mouth wall 11 and the strip 15 of the body 1 and an inner peripheral ridge 21 joined to the inside of the standing mouth wall 11. The banding strip 15 is provided with hooking grooves 23 and 24 in two upper and lower stages, and the protruding peripheral wall 19 is formed with engaging protrusions 25 and 26 that fit tightly into the hooking grooves 23 and 24. Therefore, if the knob 17 is operated to cut the strip 15 (see FIG. 4), the coupling between the retaining groove 23 and 24 and the engaging protrusion 25 and 26 is released, so that the lid is prevented from being opened thereafter. The function of the device is lost and the lid 2 can be freely opened and closed.
[0018]
FIGS. 5 and 6 show an embodiment of the invention of claim 2, and the hermetic stack container Pb is high for the body 1 around the bottom wall 3 as in the previous embodiment. By forming it in a curved shape, an annular convex bottom 7 is provided around it, but the lid 2 is curved so that the center of the lid 2 just fits into the curved upper bottom wall 3 of the annular convex bottom 7. Then, the lid wall convex surface portion 27 is formed so as to rise. Thus, a fitting state is obtained between the curved upper bottom wall 3 of the body 1 and the lid wall convex surface portion 27. In addition, the annular convex edge bottom 7 has the same shape as that of the above embodiment, but when stacked, the annular convex edge bottom 7 is in point contact with the peripheral upper surface 28 of the lid 2 in a partial cross-section, and in overall annular contact. This is the same as in the above-described embodiment, and this prevents the fitting state between the curved upper bottom wall 3 and the lid wall convex surface portion 27 from being displaced.
[0019]
Unlike the previous embodiment, the lid opening prevention device T is formed of a soft plastic made of a material that is easy to cut, and the body 1 is formed of a hard plastic because the strip 15 to be cut is formed in the lid 2. did. And the standing mouth part wall 11 is formed in the upper end of the body 1, the engagement convex strips 25 and 26 are formed in the upper and lower sides on the outer peripheral side, and a finger supports if it tries to open the lid 2 under it. An obstruction ridge 29 is provided. The lid 2 is provided with a hanging peripheral wall 19 projecting close to the obstacle projecting ridge 29, and an inner circumferential ridge 21 that is in close contact with the inside of the standing wall 11, and a hanging groove on the hanging peripheral wall 19. Articles 23 and 24 are formed.
[0020]
Of the upper and lower latching grooves 23, 24, the upper latching groove 23 is formed on the check pawl, so that the lid 2 is firmly latched so as not to open. And by this holding | maintenance, the inner peripheral protrusion 21 closely_contact | adheres to the step part 30 formed in the inner periphery of the body 1, and watertightness is ensured also by this.
[0021]
Regarding the release of the lid opening prevention device T, the hanging peripheral wall 19 is cut off by the upper hanging groove 23 (the chain line 20 indicates the cutting position). The groove strips 23 and below become the band-wound piece 15, and a tongue-shaped knob 17, a cut groove 16, and a cut joint 18 are formed at one end thereof. Therefore, in the body 1 after opening, the upper end portion of the hanging peripheral wall 19 remains, and watertightness is ensured by sandwiching the standing wall 11 of the body 1 with the inner peripheral protrusion 21.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view seen from the front showing a hermetically stacked container according to claim 1 in a stacked state.
FIG. 2 is an enlarged cross-sectional view of a portion A in FIG.
FIG. 3 is a plan view of the same hermetically stacked container.
FIG. 4 is a cross-sectional view showing a state where the lid opening prevention device is released at the joint between the body and the lid of the hermetically sealed overlapping container.
FIG. 5 is a cross-sectional view seen from the front showing the hermetic stack container of the invention according to claim 2 in a stacked state.
6 is an enlarged cross-sectional view of a portion B in FIG.
[Explanation of symbols]
Pa, Pb hermetically sealed container T Opening prevention device 1 body 2 lid 3 curved upper bottom wall 5 side wall 7 annular convex bottom 8 recess 9 step
10 Recess bottom 11 Standing wall
12 Corner with no round 15 Band strip 16 Groove 17 Knob 18 Cut joint 27 Convex part of the lid wall
28 Surrounding upper surface

Claims (3)

By forming a curved upper bottom wall that is made of a plastic and a lid that is molded with plastic so as to closely fit each other, and the center part of the body is raised, an inclined side wall and a curved upper bottom wall are formed around it. An annular convex bottom with a round cross-section that is continuous with the bottom of the thread is provided instead of the thread bottom, and a recess that falls from the upper surface of the circumference along the circumference can be received in contact with the annular convex bottom of the body. In the cross section of the body and the lid, the contact is formed so that the bottom surface of the recess is a point contact as a tangent to the rounded surface of the bottom of the annular convex edge, and further, the step sinks around the bottom surface of the recess. A hermetically sealed container characterized by a rounded corner . By forming a curved upper bottom wall with a central part raised in the body, the sloping side wall and the curved upper bottom wall are rounded around the body, which consists of a body and lid molded from plastic that closely fit each other An annular convex bottom with a continuous round cross section is provided as a substitute for the yarn bottom, and the lid is convexly covered with a curved upper bottom wall while receiving the annular convex bottom of the body in contact with the surrounding upper surface. A hermetically sealed container characterized in that the contact is formed in such a manner that the upper surface of the lid is a tangent to the rounded surface of the annular convex edge bottom in the cross section between the body and the lid .   One of the body and the lid is made of soft or semi-rigid plastic and the other is made of hard plastic, and provided with a lid-opening prevention device. On the lid, a band strip that is coupled to the other side so that it cannot be removed is formed so that it can be cut along the winding direction, and a cut groove is formed at one end of the band strip for starting cutting. The hermetic stack container according to claim 1 or 2, further comprising a cut tab protruding so as to apply a force to form and cut the cut joint near the cut groove.