JPH049845Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> The present invention is a lunch box, particularly a lunch box of the type in which the main container and the lid are sealed by a locking lever, and is suitable for use as lunch boxes for infants and children. The present invention relates to a bento box that is easily used as a box and has an asymmetrical outer shape in a plan view.

<Prior Art> Conventionally, this type of bento box has only different sizes (inner volume) for infants and children, and the shape in plan view is usually circular, oval, or rectangular. There are only three types: symmetrical from left to right and up and down from the center line in plan view (hereinafter referred to as symmetrical)
It is usually formed in

This is presumed to be because when the outer shape is made irregular, a portion with low packing pressure is created, and water in the contents leaks out, making it difficult to ensure watertightness.

<Problems to be solved by the invention> Therefore, conventionally, this type of lunch box has a symmetrical structure that makes it easy to maintain uniform pressure between the main container and the lid over the entire circumference by the locking lever as described above. It seems that only the shaped ones were manufactured.

However, in such a symmetrical bento box, the surface of the lid is decorated with a rabbit, fox, raccoon dog, etc.
Even when pictures of dogs and cats were included, they could not be matched well with the outside shape, resulting in a lack of cuteness. Furthermore, if the outer shape was made to have an irregular shape to match these pictures, there would be a problem that watertightness would be lacking and this could not be guaranteed.

Therefore, in order to solve these conventional problems, the present invention has been developed to make the outer shape of the lunch box asymmetrical in plan view, and to make it irregularly shaped, the depth changes in height to an extent that is not noticeable in appearance. By equalizing the pressurizing force around the entire circumference when closing the lid, it is possible to ensure watertightness, and the external shape matches the various pictures that children like. The purpose of the present invention is to provide a lunch box with a unique shape.

<Means for solving the problem> The structure of the present invention for achieving the object will be explained using FIGS. 1 to 11 corresponding to the embodiments. A molded container 1 and a lid 2, a packing material 3 fitted into a groove 4 formed near the outer peripheral edge of either of these bodies 1 or 2, and either of these bodies 1 or 2. Two U-shaped locking levers 5, 5 formed on one opposing side to be able to rise and fall freely, and two locking levers protrudingly formed on the outer peripheral surface of the other corresponding to these locking levers 5, 5. The bento box is made of synthetic resin and has protrusions 6, 6, and the outer shape is asymmetrically shaped in plan view, and the two locking levers 5, 5
and the two locking protrusions 6, 6 are formed in a non-parallel shape in plan view, and the peripheral walls 1 of both bodies 1, 2
Peripheral wall portions 71a, 71b, 81a of remaining portions 7, 8 sandwiched between these two locking levers 5, 5 or locking protrusions 6, 6 formation positions among a, 2a,
The heights H ₁ and H _{2 of 81b from the bottom plates 1b and 2b} are,
In at least one of the container body 1 and the lid body 2, the locking levers 5, 5 or the locking protrusions 6, 6
Peripheral wall portions 91a, 9 at formation positions 9, 10 of
1b, 101a, and 101b are formed in an inclined posture that gradually becomes higher as the distance from the position increases from the height _H0 .

<Function> Since the present invention has such a configuration, the two U-shaped locking levers 5, 5 are locked to the locking projections 6, 6, or the locking projections 6, 6 are locked to the locking projections 6, 6. By releasing the locked state, the lid may be used in the closed position or in the open lid position.

In this closed lid position, the remaining portion 7 located between the formation positions of these two locking levers 5, 5,
The peripheral wall portions 1a and 2a of No. 8 are pressurized more strongly than the peripheral wall portions at these lever forming positions, and can maintain watertightness.

<Examples> Examples of the present invention will be described below based on the drawings.

1 to 11 are diagrams showing embodiments of the present invention. FIGS. 1 and 3 to 5 show the planar shape, and FIGS. 2 and 6 to 11 show the embodiments of the present invention. The side shape and its sectional view are shown respectively.

The lunch box according to the present invention has a main body container (hereinafter referred to as a container) 1 and a lid body 2 both molded from synthetic resin material, and in this embodiment, these two bodies 1, 2 is injection molded from ABS resin. In addition, the lid body 2
There is a fourth groove 4 for fitting the packing along the outer periphery of the
formed as shown in FIGS. 8 and 11,
The structure is such that an annular backing material 3 is fitted into this groove 4. Further, as is clear from FIG. 1, the overall shape is asymmetrical with respect to the vertical center line and the horizontal center line in plan view, and the front side of the lid body 2 (lower side in FIG. 1) and on the rear side (upper side in Fig. 1), there are two locking levers 5a, 5b which are C-shaped when viewed from the side and are indicated by chain lines in Fig. 3 showing the bottom view. As shown in the figure, it is fitted in an undulating manner, and the body 1
The locking protrusions 6a and 6b for locking the locking levers 5a and 5b extend outward from the periphery of the opening, as shown in FIG. 5, which is a plan view of the container 1. It once formed a protrusion.

These locking levers 5a, 5b and locking projections 6
A, 6b are formed so that one side 5a, 6a is long and the other side 5b, 6b is short, considering the external shape.

Therefore, as shown in FIG.
Of the peripheral wall 1a, these two locking protrusions 6a,
The peripheral wall portions 71a, 81a located in the two remaining portions 7, 8 sandwiched between the formation positions of the locking protrusions 6a, 6b are the bottom plates of the peripheral wall portions 91a, 101a located in the portions 9, 10 where these locking protrusions 6a, 6b are formed. Figures 6 and 7 and Figures 9 and 10 compared to the height H ₀ from 1b.
As shown in the figure, these parts 9, 10
The heights H 1 and H 2 are formed such that the heights H ₁ and H ₂ gradually increase as the position is further away from the base.

To explain this in terms of real numbers for the implemented product,
The length of the left and right flange in Figure 7 is 195
mm, and the length of the left-right flange portion in FIG. 10 is 135 mm. As shown in FIGS. , 101a from the bottom wall is 40 _mm , and these two parts 9, 10
Peripheral wall portion 71 of the remaining portion 7 on the wide side located between
The maximum height H ₁ of a is 42.3 mm, and the maximum height H ₂ of the peripheral wall portion 81a of the remaining portion 8 on the narrow side is 41.4 mm.

In addition, in this embodiment, as shown in FIG _.
In contrast, the peripheral wall portions 71b, 8 of the remaining portions 7, 8 sandwiched between the locking levers 5a, 5b forming positions
The wall thicknesses t ₁ and t ₂ of the portion close to 1b are made thicker. In terms of real numbers, with respect to the wall thickness t ₀ of the central portion, the maximum wall thickness t ₁ of the remaining portion 7 on the wide side is 0.55 mm, and the maximum wall thickness t ₂ of the remaining portion 8 on the narrow side is 0.4 mm. It is a formed structure.

In order to fit the lid 2 onto the container 1 using the bento box thus constructed, the two locking levers 5a and 5, which are attached to both sides of the lid 2 so as to be freely foldable, are used.
The lid 2 is placed and fitted onto the container 1 with the lid 2 opened to the side as shown by the chain line in FIG. The locking protrusion 6 formed in
What is necessary is to lock it to a and 6b. In this way,
As shown in FIGS. 7 and 10, the portions where these locking levers 5a and 5b are formed have a downwardly descending arc shape, and there are no locally weak pressure points around the entire circumference. Even positions far away from the positions of the locking levers 5a, 5b are pressurized evenly, making it possible to maintain watertightness.

In the figure, 11 is a projection formed on the bottom surface of the container 1, and 12 is a lid of a recess 14 formed for inserting chopsticks 13, as seen in FIG.

Thus, in the lunch box according to the present invention, the locking levers 5a, 5b are formed on the lid body 2 in the above embodiment, but these levers are formed on the container 1 side, and the locking protrusions 6a, 5b are formed on the lid body 2. 6b may be formed on the lid 2 side. Further, the lengths of these two locking levers 5a, 5b may not be made longer or shorter depending on the outer shape of the lunch box, but may be approximately the same length. Further, the two remaining portions 7 and 8 sandwiched between the formation positions of both levers 5a and 5b may not be made larger or smaller, but may be made approximately the same size. Furthermore, the groove 4 into which the pantsking material 3 is inserted may also be formed on the container 1 side. Further, the structure in which the height of the peripheral wall portion from the bottom plate is varied is not limited to the container 1 side, but may be provided on the lid body 2 side, and may also be formed separately on both bodies 1 and 2. good.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments, and the present invention is not necessarily limited to the structure of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the invention> As is already clear from the above explanation, the invention has the following effects:
In a lunch box that has two locking levers and a locking projection that locks them, the height of the remaining peripheral wall between the positions where these levers and projections are formed is:
Since it is formed in an inclined position that gradually becomes higher as it goes away from these forming positions, the parts that are moved away from these positions by the engagement of both levers and both protrusions. The larger the pressurizing force is applied, the smaller the pressurized area virtually disappears over the entire circumference, and the pressurization can be averaged, and the leakage of liquid juice etc. from any part of the circumference can be reliably prevented. A remarkable practical effect can be expected in that it has become possible to produce a bento box with an asymmetrical outer shape.

[Brief explanation of the drawing]

In the drawings, FIGS. 1 to 11 are views showing an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view,
Figure 3 is a bottom view, Figure 4 is a bottom view of the lid, Figure 5 is a plan view of the container, Figure 6 is a rear view of the lid and the container in a separated position, Figure 7 is a rear view, 8 is a sectional view taken along the - line in FIG. 1, FIG. 9 is a side view of the lid body and container in a separated position, FIG. 10 is a side view, and FIG. 11 is a sectional view taken along the - line in FIG. 1. In the figure, 1 is the container, 2 is the lid, 3 is the packing material,
4 is a groove, 5 is a locking lever, 6 is a locking protrusion, 7, 8
9 and 10 are the remaining parts, 9 and 10 are the protrusion formation positions, 1a and 2
a is the peripheral wall, 1b, 2b are the bottom plates, 71a, 71b,
81a, 81b, 91a, 91b, 101a, 1
01b is the peripheral wall portion, and H ₀ , H ₁ , and H ₂ are the heights of the peripheral wall.

Claims (1)

[Claims for Utility Model Registration] Container 1 and lid 2 that are molded so that they can be inserted into and removed from each other.
, a packing material 3 fitted into a groove 4 formed near the outer peripheral edge of one of these bodies 1 and 2, and an undulation on the opposite side of either of these bodies 1 and 2. Two U-shaped locking levers 5, 5 that are freely formed, and these locking levers 5,
The bento box is made of synthetic resin and has two locking protrusions 6, 6 protrudingly formed on the outer peripheral surface of the other corresponding to the outer circumferential surface of the bento box, and the outer shape is formed into an asymmetrical shape when viewed from above, and the two The locking levers 5, 5 and the two locking protrusions 6, 6 are formed non-parallel in plan view, and both bodies 1,
The peripheral wall portion 71a of the remaining portions 7, 8 which are sandwiched between the formation positions of these two locking levers 5, 5 or locking protrusions 6, 6 among the peripheral walls 1a, 2a of 2,
The heights H ₁ and H 2 of 71b, 81a, and 81b from the bottom plates 1b and _2b are the same as those of the locking levers 5 and 5 in at least one of the container 1 and the lid 2.
Or peripheral wall portions 91a, 91b, 101a, 10 at formation positions 9, 10 of locking protrusions 6, 6
The bento box is formed in an inclined position such that the height of the bento box becomes gradually higher as the position is further away from the height H ₀ of 1b. The lunch box according to claim 1, wherein a groove 4 for fitting a packing material 3 is formed in the lid 2. The lunch box according to claim 1, wherein a groove 4 for fitting a packing material 3 is formed in the container 1. The lunch box according to claim 1, wherein the U-shaped locking levers 5, 5 are formed on the lid 2, and the locking protrusions 6, 6 are formed on the container 1. The lunch box according to claim 1, wherein the U-shaped locking levers 5, 5 are formed on the container body 1, and the locking protrusions 6, 6 are formed on the lid body 2. Utility model registration claim 1, in which the two locking levers 5, 5 are formed in a V-shape in plan view
Lunch box described in section. The lunch box according to claim 1, wherein the lengths of the two locking levers 5, 5 are different from each other in plan view. The lunch box according to claim 1, wherein the two locking levers 5, 5 have substantially the same length in plan view. the remaining part 7 between the two locking levers 5, 5;
8. The lunch box according to claim 1 of the utility model registration claim, wherein the size of the box 8 is different in size. the remaining part 7 between the two locking levers 5, 5;
8. The lunch box according to claim 1 of the utility model registration claim, wherein the sizes of the portions 8 and 8 are approximately the same size. Utility model registration claim 1, in which a height change from the bottom plate of the peripheral wall portion of the remaining portions 7, 8 sandwiched between the locking levers 5, 5 or the locking protrusions 6, 6 is formed on the lid body 2. Lunch box described in section. Utility model registration claim 1, in which a height change from the bottom plate of the peripheral wall portion of the remaining portions 7, 8 sandwiched between the locking levers 5, 5 or the locking protrusions 6, 6 is formed in the container 1. Lunch box described in. A utility model in which a height change from the bottom plate of the peripheral wall portion of the remaining portions 7, 8 sandwiched between the locking levers 5, 5 or the locking protrusions 6, 6 is formed on each of the container body 1 and the lid body 2. A bento box according to claim 1 of the registered claim. A utility model in which the heights H ₁ and H ₂ of the peripheral wall portions of the remaining portions 7 and 8 sandwiched between the locking levers 5 and 5 or the locking protrusions 6 and 6 from the bottom plate are different from each other. A bento box according to claim 1 of the registered claim.