JP2004059048A - Container for partial heating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for partial heating wherein a heating part and a non-heating part in a microwave oven are approximately perfectly intercepted to prevent hot air or the like from flowing into the non-heating part from the heating part. <P>SOLUTION: The container for partial heating consists of a container body 1 and a lid 2 fitted by inner fitting. The container body 1 has a recessed place 11 for storing an article to be heated and a recessed place 12 for storing an article not to be heated, and a projection 15 is provided on a part connecting these recessed places 11 and 12 for storing, and is fitted to the recessed line 25 of the lid 2 so as to be closely contact with it to prevent the hot air or the like from flowing into the non-heating part 1b by separating the heating part 1a from non heating part 1b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a container for partial heating, in which a heated portion and a non-heated portion are separated by a microwave oven.
[0002]
[Prior art]
Recently, in convenience stores and the like, a service has been provided in which, when a customer purchases a bento or the like that is kept at a low temperature to prevent corruption during distribution, the product is heated by a microwave oven at a store and provided. However, in this method, since the contents of a container such as a lunch box are all heated, there arises a problem that when heated, such as salads and desserts, those that deteriorate or lose taste cannot be filled in one container.
[0003]
[Problems of the Invention]
Therefore, one container separates the heated part and the non-heated part, and the non-heated part is coated in advance with a microwave opaque material, or the non-heated part is inserted into a microwave opaque case and loaded into a microwave oven. And other technologies have been developed.
[0004]
However, no matter which method is adopted, since one container is heated, a problem arises that hot air or steam generated in the container flows into the non-heated portion, and the non-heated portion is also substantially heated. I have.
[0005]
Therefore, 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 the problem]
In order to solve the above-described problems, the present invention provides a container body in which a heating section and a non-heating section are respectively partitioned by a bottom wall and a peripheral wall rising from the periphery thereof, and a heating coating section and a non-heating coating section are respectively formed by a top wall and In an inner fitting container having a lid defined by a peripheral wall hanging down from the peripheral wall, a first step, a second step following the first step, and a protrusion near an upper end of the second step are provided at the upper end of the peripheral wall of the container body. And a first step and a second step are provided by folding back from the lower end of the peripheral wall of the lid, and the first and second steps of the container body correspond to the first and second steps of the lid. And the tip of the second step portion of the lid is locked to the projection, and a projection is provided at the connecting portion between the heating portion and the non-heating portion. A concave portion corresponding to the ridge is provided on the connecting portion, and the ridge is formed through a concave portion provided at both ends thereof. The ridge extends to the second step of the main body, the ridge extends to the second step of the lid via protrusions provided at both ends thereof, and the ridge and the recess and the depression and the protrusion are in close contact with each other. And is fitted.
[0007]
It is preferable to raise the bottom wall of the heating section. Further, an exhaust valve biased to the outside of the lid can be provided on the top wall of the lid. Preferably, the base of the valve is provided with a rib protruding outside the lid.
[0008]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 to 3, the container for partial heating according to the present invention comprises a container body 1 and a lid 2 which is fitted into the opening of the container body. The container main body 1 is divided into a heating section 1a having a storage recess 11 for a heated object and a non-heating section 1b having a storage recess 12 for a non-heated object. The storage recess 11 is defined by a bottom wall 11a and a peripheral wall 11b rising from the peripheral edge thereof, and the storage recess 12 is defined by a bottom wall 12a and a peripheral wall 12b rising from the peripheral edge thereof.
[0009]
The lid 2 is in the form of a lid, and as shown in FIGS. 1 and 3, the heating section 1 a and the non-heating section 1 b of the container body 1 correspond to the heating section 2 a and the non-heating section 2 b, respectively. Divided. The heating covering portion 2a has a heating projection 21 defined by a top wall 21a and a surrounding wall 21b hanging down from the periphery thereof, and the non-heating covering portion 2b is defined by a top wall 22a and a surrounding wall 22b hanging down from the periphery. Non-heating convex portion 22.
[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 11 c is formed continuously to the upper end of the peripheral wall 11 b of the heating section 1 a and extends all around the peripheral wall 11 b. The step portion 11c has a horizontal surface and a vertical surface having a substantially L-shaped cross section. The horizontal surface has the same width over the entire circumference and the vertical surface has the same height. Preferably, the surface is a tapered surface that slopes inwardly upward. A second step portion 11d having a substantially L-shaped cross section formed of a horizontal plane and a vertical surface is formed continuously from the first step portion 11c. The width of the horizontal surface of the second step portion 11d differs depending on the location of the container body 1. That is, the width is wider at the corners of the container body 1 and at the connecting portion between the heating unit 1a and the non-heating unit 1b, which will be described later.
[0011]
Similarly to the above, a first step portion 12c extending over the entire circumference of the peripheral wall 12b is formed continuously with the upper end of the peripheral wall 12b of the non-heating portion 1b. The shape, width and height of the step 12c are the same as those of the step 11c of the heating section 1a. In addition, a second step 12d following the first step 12c is formed, which is also formed in the same shape, width, and height as the step 11d of the heating unit 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 therefore extend all around the container body 1. The protrusions 13 are provided at intervals around the upper ends of these vertical surfaces. Further, a flange 14 extending over the entire periphery of the container body 1 is formed on the outer periphery of the common vertical surface.
[0013]
In correspondence with the steps 11c and 11d of the heating section 1a and the steps 12c and 12d of the non-heating section 1b, the first heating section 2a of the lid 2 is folded upward from the lower end of the peripheral wall 21b and directed upward. A first step 22c and a second step 21d are provided next to the first step 22c and a second step 22d. As in the case of 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 coated portion 2b, and extends along the vertical surfaces of the second step portions 11d and 12d of the container body 1. The second stepped portions 21d and 22d are in contact with the inside (FIGS. 1 and 4), and the distal ends (upper ends) of the vertical surfaces of the second stepped portions 21d and 22d are locked by the protrusions 13 and are prevented from falling off. Further, the vertical surfaces of the first step portions 21c and 22c are tapered surfaces that incline upward and inward, corresponding to the vertical surfaces of the first step portions 11c and 12c of the container body 1.
[0014]
Next, the structure of the connecting portion between the heating unit 1a and the non-heating unit 1b will be described. As shown in FIGS. 1 and 2, on the side where the heating unit 1 a and the non-heating unit 1 b face each other, a flat surface 11 e following the vertical surface of the first step 11 c and a vertical surface of the first step 12 c Subsequent flat surfaces 12e are provided. These flat surfaces 11e and 12e form surfaces common to the horizontal surfaces of the second steps 11d and 12d, respectively, and they 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 crossing the container body 1, and both end surfaces 15a, 15b of the ridges 15 are provided. As shown in FIG. 5, has an inclined surface which becomes lower outward, and further provided with depressions 16a and 16b following the inclined surface.
[0015]
On the other hand, flat portions 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-heat coated portion 2b of the lid 2, and these flat surfaces 21e and 22e are provided. Each of the second steps 21d and 22d is formed on the same plane as the horizontal plane of the second steps 21d and 22d. A recess 25 into which the ridge 15 is tightly fitted is provided, and projections 26a and 26b closely fitted into the recesses 16a and 16b are provided continuously at both ends of the recess 25. .
[0016]
Preferably, the lid 2 is provided with an opening for internal pressure. This may be a simple hole, but is preferably exhaust valves 28 and 29 formed by tongue cuts as shown in FIG. The valves 28 and 29 are preferably biased 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 that the punch P is used to stamp the back of the lid (FIG. 6). Further, it is more preferable to provide ribs 28a, 29a having a semicircular shape, a triangular shape, a trapezoidal shape, or the like at the bases of the valves 28, 29. Reference numeral 27 in FIG. 3 indicates a tab used when removing the lid 2.
[0017]
When using a container as described above, appropriate articles (foods) are respectively 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, since 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. Steps 11d, 12d and 21d, 22d are pressed against each other, and the protrusion 13 locks the tip of the second step 21d, 22d of the cover 2. Will not come off. Further, when the lid 2 is fitted into the container body 1, since the concave stripe 25 provided in the transverse direction of the lid 2 does not reach the side edge of the lid 2 (ends halfway), the lid 2 is And it can maintain an appropriate rigidity.
[0018]
With the lid 2 covered as described above, the non-heating portion 1b is inserted into an appropriate case for partial heating, and is loaded into a microwave oven together with the case for partial heating to heat. During the heating, hot air or steam is generated in the heating section 1a. However, the ridges 15 provided on the container body 1 and the concave ridges 25 provided on the lid 2 are in close contact with each other, and the depressions 16a, 16b at both ends of the ridge 15 are provided. The non-heating portion 1b is almost completely shut off from the heating portion 1a because the convex portions 26a and 26b at both ends of the groove 25 are in close contact with each other, so that hot air or steam does not flow into the non-heating portion 1b, Since the heating section 1a and the non-heating section 1b are only connected by a thin sheet material, heat conduction can be minimized. When the internal pressure rises above a predetermined value, the valves 28 and 29 are opened to release the internal pressure, so that an accident that the lid 2 suddenly comes off does not occur.
[0019]
The ridges 15 for separating the heating portion 1a and the non-heating portion 1b are not only linearly extending as shown in FIG. 2, but also curved lines such as arcs, bent lines such as L-shapes, or a combination thereof. May be. Of course, the shape of the ridge 25 provided on the lid 2 must also be changed according to the shape of the ridge 15. The upper end of the ridge 15 is substantially semicircular in cross section, but may be substantially triangular.
[0020]
A partition or a tray can be provided in each of the storage sections 11 and 12 so that a plurality of different articles (foods) can be stored. Further, if the bottom wall 11a of the storage portion 11 is raised in an arch shape as shown in FIG. 1, the heating efficiency can be increased.
[0021]
The planar shape of the container is not limited to a square as shown, but may be another polygon, a circle, an ellipse, or the like. The material of the container is generally a synthetic resin sheet.
[0022]
【The invention's effect】
According to the present invention, as described above, in addition to the fitting portion of the inner fitting container, a projection is provided on the container body to lock the peripheral edge of the lid, so that the fitting force is increased, and It is possible to prevent an accident that the lid suddenly comes off due to an impact or an increase in internal pressure, and at the same time, it is possible to improve the sealing performance and improve the heating efficiency.
[0023]
Further, a hollow ridge is provided to separate the heated portion and the non-heated portion, so that the ridge does not cross the container body, and the concave ridge of the lid fitted to the ridge does not cross the lid. Therefore, the container main body and the lid do not bend along the ridge or the concave ridge, so that appropriate rigidity is maintained. In addition, since the recesses are formed at both ends of the protrusion and the protrusions are formed at both ends of the recess, the heating portion and the non-heating portion are in a cut-off state with no gas flow. Therefore, there is no possibility that hot air or steam flows from the heating unit to the non-heating unit to heat the non-heated 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 a container body. FIG. 3 is a plan view of a lid. FIG. Front view [Fig. 5] Longitudinal sectional view of a ridge provided on the container body [Fig. 6] Longitudinal sectional view of a valve provided on a lid [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 Container main body 1a Heating part 1b Non-heating part 2 Lid 2a Heat coating part 2b Non-heating coating part 11 Heating material storage recess 12 Non-heating material storage recess 11a, 12a Bottom wall 11b, 12b Peripheral wall 11c, 12c First step Part 11d, 12d Second step part 11e, 12e Flat surface 13 Projection 14 Flange 15 Hollow ridge 15a, 15b Both ends 16a, 16b of ridge Depression 21 Heating protrusion 22 Non-heating protrusion 21a, 22a Top wall 21b, 22b Peripheral wall 21c, 22c First step 21d, 22d Second step 21e, 22e Flat part 25 Recess 26a, 26b Projection 27 Tab 28, 29 Exhaust valve 28a, 29a Rib P punch

Claims (4)

The heating unit and the non-heating unit are respectively composed of a container body divided by a bottom wall and a peripheral wall rising from the peripheral edge thereof, and a lid formed by dividing the heating coating unit and the non-heating coating unit by a peripheral wall hanging down from the top wall and the peripheral edge, respectively. A first step is provided at the upper end of the peripheral wall of the container body, a second step following the second step, and a protrusion is provided near the upper end of the second step, and the first step is folded back from the lower end of the peripheral wall of the lid. A second step is provided, the first and second steps of the container body and the first and second steps of the lid are correspondingly press-contactable, and the tip of the second step of the lid is provided. Is locked to the protrusion, a ridge is provided at a connecting portion of the heating portion and the non-heating portion, a concave ridge corresponding to the ridge is provided at a connecting portion of the heating coating portion and the non-heating coating portion, Both ends of the ridge extend to the second step of the container body via the recess, and both ends of the ridge are 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 a bottom wall of the heating unit is raised. 3. The partial heating container according to claim 1, wherein an exhaust valve biased to the outside of the lid is provided on a top wall of the lid. 4. The partial heating container according to claim 3, wherein a rib protruding outside the lid is provided at a base of the valve.

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