JP4093813B2 - Partial heating container - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a partial heating container in which a heating part and a non-heating part are divided by a microwave oven.
[0002]
[Prior art]
Recently, at convenience stores and the like, when a customer purchases a bento or the like kept at a low temperature to prevent corruption during distribution, a service is provided by heating in a store using a microwave oven. However, in this method, the contents of a container such as a lunch box are all heated, so that there arises a problem that when a salad or dessert is heated, one container cannot be filled with something that changes quality or loses its taste.
[0003]
[Problems of the Invention]
Therefore, the heated part and the non-heated part are separated by a single container, and the non-heated part is covered with a microwave impervious material in advance, or the non-heated part is inserted into a microwave impervious case and loaded into the microwave oven. Technology has been developed.
[0004]
However, no matter which method is adopted, since one container is heated, there is a problem that hot air or steam generated in the container flows into the non-heated part, and the non-heated part is actually heated. Yes.
[0005]
Accordingly, an object of the present invention is to provide a container in which a heated portion and a non-heated portion are almost completely partitioned so that hot air or the like does not flow into the non-heated portion.
[0006]
[Means for solving problems]
In order to solve the above-described problems, the present invention includes a container body in which a heating part and a non-heating part are partitioned by a bottom wall and a peripheral wall rising from the periphery thereof, and a heating coating part and a non-heating coating part, respectively. In an inner fitting container comprising a lid partitioned by a peripheral wall depending from the peripheral wall, a first step portion, a second step portion following the first step portion, and a protrusion near the upper end of the second step portion are formed on the upper end of the peripheral wall of the container body. The first step portion and the second step portion are provided by folding back from the lower end of the peripheral wall of the lid, and the first and second step portions of the container body correspond to the first and second step portions of the lid. The tip of the second step portion of the lid is locked to the projection, and a protrusion is provided at the connecting portion between the heating portion and the non-heating portion, and the heating coating portion and the non-heating coating portion The connecting portion is provided with a recess corresponding to the protrusion, and the protrusion is accommodated via recesses provided at both ends thereof. Extends to the second step of the main body, the recess extends to the second step of the lid through the protrusions provided at both ends thereof, and the protrusion and the recess and the recess and the protrusion are in close contact with each other It is characterized by being fitted.
[0007]
It is preferable to raise the bottom wall of the heating unit. Further, an exhaust valve biased to the outside of the lid can be provided on the top wall of the lid. It is preferable to provide a rib protruding outside the lid at the base of the valve.
[0008]
Embodiment
Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 to 3, the partial heating container of the present invention includes a container body 1 and a lid 2 that is fitted into the opening of the container body 1. The container body 1 is divided into a heating part 1a having a storage recess 11 for a heated object and a non-heating part 1b having a storage recess 12 for a non-heating object. The storage recess 11 is defined by a bottom wall 11a and a peripheral wall 11b rising from the periphery thereof, and the storage recess 12 is defined by a bottom wall 12a and a peripheral wall 12b rising from the periphery thereof.
[0009]
The lid 2 is in the form of a raised lid. As shown in FIGS. 1 and 3, the lid 2 has a heating covering portion 2a and a non-heating covering portion 2b corresponding to the heating portion 1a and the non-heating portion 1b of the container body 1, respectively. It is divided. The heating covering portion 2a has a heating convex portion 21 defined by a top wall 21a and a peripheral wall 21b depending from the periphery thereof, and the non-heating covering portion 2b is defined by a top wall 22a and a peripheral wall 22b depending from the periphery thereof. The non-heating convex part 22 is provided.
[0010]
The fitting structure between the container body 1 and the lid 2 is as follows. As shown in FIGS. 1, 2, and 4, a first step portion 11c extending to the entire circumference of the peripheral wall 11b is formed continuously to the upper end of the peripheral wall 11b of the heating portion 1a. The step portion 11c is composed of a horizontal plane and a vertical plane having a substantially L-shaped cross section. The horizontal plane is formed with the same width over the entire circumference, and the vertical plane is also formed with the same height. The surface is preferably a tapered surface inclined upward and inward. Continuing from the first step portion 11c, a second step portion 11d having a substantially L-shaped cross section composed of a horizontal plane and a vertical plane is formed. The width of the horizontal plane of the second step portion 11d varies depending on the location of the container body 1. That is, the width of the corner portion of the container body 1 and the connecting portion between the heating unit 1a and the non-heating unit 1b described later are wide.
[0011]
Similarly to the above, the 1st step part 12c extended over the perimeter of the surrounding wall 12b is formed following the upper end of the surrounding wall 12b of the non-heating part 1b. The shape, width, and height of the step portion 12c are the same as those of the step portion 11c of the heating unit 1a. Moreover, the 2nd step part 12d following the 1st step part 12c is formed, and this is also formed in the same shape, width | variety, and height as the step part 11d of the heating part 1a.
[0012]
The vertical surfaces of the second step portions 11d and 12d are common to the heating portion 1a and the non-heating portion 1b, and thus extend to the entire circumference of the container body 1. And the protrusion 13 is provided in the upper end vicinity of these vertical surfaces at intervals. Further, a flange 14 extending over the entire circumference of the container body 1 is formed on the outer periphery of the common vertical surface.
[0013]
Corresponding to the step portions 11c and 11d of the heating portion 1a and the step portions 12c and 12d of the non-heating portion 1b, the heated covering portion 2a of the lid 2 is turned up from the lower end of the peripheral wall 21b and turned upward. 21c followed by a second step portion 21d, and similarly, the non-heated covering portion 2b is also provided with a first step portion 22c and a second step portion 22d, and the second step portions 21d and 22d. Like the container body 1, the vertical surface extends over the entire circumference of the lid 2 in common with the heated coating portion 2a and the non-heated coating portion 2b, and the vertical surfaces of the second step portions 11d and 12d of the container main body 1 Abutting inside (FIGS. 1 and 4), the leading ends (upper ends) of the vertical surfaces of the second stepped portions 21d and 22d are locked to the protrusions 13 to prevent them from coming off. Further, the vertical surfaces of the first step portions 21c and 22c are tapered surfaces that incline upward and correspond to the vertical surfaces of the first step portions 11c and 12c of the container body 1.
[0014]
Next, the structure of the connection part of the heating part 1a and the non-heating part 1b will be described. As shown in FIGS. 1 and 2, on the side where the heating unit 1a and the non-heating unit 1b face each other, on the flat surface 11e following the vertical surface of the first step portion 11c and on the vertical surface of the first step portion 12c. Subsequent flat surfaces 12e are provided. These flat surfaces 11e and 12e form a surface common to the horizontal surfaces of the second step portions 11d and 12d, respectively, and both are provided on the same level. Hollow ridges 15 (FIGS. 1 and 5) projecting upward from the flat surfaces 11e and 12e extend to the vicinity of the flange 14 in a direction transverse to the container body 1, and both end surfaces 15a and 15b of the ridge 15 are provided. As shown in FIG. 5, it has an inclined surface that is lowered to the outside, and recesses 16a and 16b are provided following the inclined surface.
[0015]
On the other hand, flat surfaces 21e and 22e corresponding to the flat surfaces 11e and 12e of the container body 1 are also provided at the connecting portion between the heated coating portion 2a and the non-heated coating portion 2b of the lid 2, and these flat surfaces 21e and 22e are Each of the second step portions 21d and 22d is formed on the same level surface as the horizontal plane. And the recessed line | wire 25 which the said protrusion 15 closely_contact | adheres is provided, and the protrusion part 26a and 26b which closely_fit | inserts the said recessed part 16a and 16b is provided in the both ends of the said recessed line 25 continuously. .
[0016]
The lid 2 is preferably provided with an opening for internal pressure. This may be a simple hole, but exhaust valves 28 and 29 formed by tongue-like cuts as shown in FIG. 3 are preferred. The valves 28 and 29 are preferably urged to open to the outside of the lid 2 as shown in FIG. For this purpose, for example, when a tongue-shaped cut is made using a punch, it is preferable to stamp with a punch P from the back side (FIG. 6) of the lid. Furthermore, it is more preferable to provide ribs 28a and 29a of semicircular shape, triangular shape, trapezoidal shape, etc. at the bases of the valves 28 and 29. Reference numeral 27 in FIG. 3 denotes a tab used when removing the lid 2.
[0017]
In the case of using the container as described above, appropriate articles (food items) are stored in the heated object storage recess 11 and the non-heated object storage recess 12 of the container body 1 and the lid 2 is fitted. At this time, the first step portions 11c and 12c of the container body 1 and the first step portions 21c and 22c of the lid 2 are tapered as shown in FIG. The step portions 11d, 12d and 21d, 22d are also in pressure contact with each other, and the protrusion 13 locks the tip of the second step portions 21d, 22d of the lid 2, so that the lid 2 is subjected to an impact during handling or a sudden rise in internal pressure. Will not come off. Further, when the lid 2 is fitted into the container main body 1, the concave strip 25 provided in the transverse direction of the lid 2 does not reach the side edge of the lid 2 (ends in the middle), and therefore the lid 2 is the concave strip 25. Therefore, it is possible to maintain appropriate rigidity.
[0018]
The non-heating part 1b is inserted into an appropriate partial heating case with the lid 2 covered as described above, and is loaded into a microwave oven together with the partial heating case and heated. During the heating, hot air or steam is generated in the heating unit 1a, but the protrusion 15 provided on the container body 1 and the recess 25 provided on the lid 2 are in close contact with each other, and the depressions 16a and 16b on both ends of the protrusion 15 are provided. And the convex portions 26a and 26b at both ends of the concave strip 25 are in close contact with each other, so that the non-heating portion 1b is almost completely cut off from the heating portion 1a, and hot air or steam does not flow into the non-heating portion 1b. Since the heating part 1a and the non-heating part 1b are merely connected by a thin sheet-like material, heat conduction can be minimized. When the internal pressure rises above a predetermined level, the valves 28 and 29 are opened to release the internal pressure, so that an accident that the lid 2 is suddenly removed does not occur.
[0019]
The protrusion 15 that separates the heating unit 1a and the non-heating unit 1b extends not only linearly as shown in FIG. 2, but also a curved line such as an arc shape, a bent line such as an L shape, or a combination thereof. But you can. Of course, the shape of the recess 25 provided on the lid 2 must be changed according to the shape of the protrusion 15. The upper end of the protrusion 15 is substantially semicircular in cross section, but may be substantially triangular.
[0020]
A plurality of different articles (food items) can be stored by providing a partition or inserting a tray in the storage portions 11 and 12, respectively. Moreover, heating efficiency can be improved if the bottom wall 11a of the accommodating part 11 is raised to an arch shape as shown in FIG.
[0021]
The planar shape of the container is not limited to the quadrangle as shown in the figure, but may be other polygons, circles, ellipses, or the like. The material of the container is usually a synthetic resin sheet.
[0022]
【The invention's effect】
According to the present invention, as described above, the protrusion is provided on the container body in addition to the fitting portion of the inner fitting container, and the peripheral edge of the lid is locked. It is possible to prevent accidents in which the lid suddenly comes off due to an impact or an increase in internal pressure, and at the same time improve the sealing performance and improve the heating efficiency.
[0023]
In addition, a hollow ridge that separates the heated and non-heated portions was provided, so that this ridge did not cross the container body, and the concave groove of the lid fitted to this ridge did not cross the lid. Therefore, the container main body and the lid do not bend along the protrusions or the recesses, and appropriate rigidity is maintained. Moreover, since the recessed part was formed in the both ends of a protrusion, and the convex part closely_contact | adhered to the said recessed part was formed in the both ends of a recessed line, a heating part and a non-heating part are in the state where it was interrupted without the flow of gas Thus, there is no possibility that hot air or steam flows from the heating part into the non-heating part to heat the non-heating article.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an example of the container of the present invention. FIG. 2 is a plan view of the container body. FIG. 3 is a plan view of the lid. [Figure 5] Longitudinal sectional view of the protrusion provided on the container body [Figure 6] Longitudinal sectional view of the valve provided on the lid [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 1a Heating part 1b Non-heating part 2 Lid 2a Heating coating part 2b Non-heating coating part 11 Heating object accommodation recess 12 Non-heating object accommodation recess 11a, 12a Bottom wall 11b, 12b Peripheral wall 11c, 12c 1st step Part 11d, 12d Second step part 11e, 12e Flat surface 13 Protrusion 14 Flange 15 Hollow ridges 15a, 15b Both ends 16a, 16b of ridges Depression part 21 Heating convex part 22 Non-heating convex part 21a, 22a Top wall 21b, 22b Peripheral wall 21c, 22c 1st step part 21d, 22d 2nd step part 21e, 22e Flat part 25 Groove 26a, 26b Projection part 27 Tab 28, 29 Exhaust valve 28a, 29a Rib P Punch

Claims (4)

A container body defined by a peripheral wall that rises from the bottom wall and its peripheral edge, respectively, and a lid that partitions the heated coating part and the non-heated coating part by a peripheral wall depending from the top wall and its peripheral edge, respectively. A first step portion, a second step portion following the first step portion, and a protrusion in the vicinity of the upper end of the second step portion are provided at the upper end of the peripheral wall of the container body, and the first step portion is folded back from the lower end of the peripheral wall of the lid. A second step portion is provided, and the first and second step portions of the container body and the first and second step portions of the lid can be press-contacted correspondingly, and the tip of the second step portion of the lid Is engaged with the protrusion, a protrusion is provided at the connecting part of the heating part and the non-heating part, and a concave line corresponding to the protrusion is provided at the connection part of the heating coating part and the non-heating coating part, Both ends of the ridge extend to the second step of the container body through the recess, and both ends of the ridge have protrusions. And it extends to a second step of the lid, the rib and the recessed portion to as concave and projections fitted in close contact portion heated vessel. The container for partial heating according to claim 1, wherein the bottom wall of the heating unit is raised. The partial heating container according to claim 1, wherein an exhaust valve biased to the outside of the lid is provided on the top wall of the lid. The partial heating container according to claim 3, wherein a rib projecting to the outside of the lid is provided at a base portion of the valve.

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