JPS628743Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a stacked container, for example, a type of stacked container in which a lower container such as a rice bowl is stored in an insulated container such as a thermal lunch box, and an upper container such as a vegetable container is placed on top of the lower container. This invention relates to a connection structure for containers.

Conventionally, in a thermal lunch box, when removing a rice bowl stored at the bottom of an insulated container, the only way to remove it is to lift the knob provided on the rice bowl lid, so the rice bowl lid must be securely connected to the rice bowl. . In the case of a conventional cylindrical rice bowl, the rice bowl lid can be screwed onto the rice bowl, but conventional thermal lunch boxes equipped with cylindrical rice bowls are thick and inconvenient to carry. In order to solve this problem, it is possible to make the rice bowl oval or rectangular in cross section. However, when the rice bowl is made into an oval or rectangular shape like this, it is impossible to screw the rice bowl lid onto the rice bowl.As an alternative, the rice bowl lid is attached to the rice bowl by force fitting. There are other methods, but this makes it difficult to remove the rice bowl lid. Therefore, for rice bowls other than cylindrical, it is not possible to lift the lid of the rice bowl and remove the rice bowl from the heat-insulating container.

The present invention has been developed in view of these conventional problems, and it is possible to connect the upper container and the lower container so that the lower container can be easily taken out regardless of the shape of the container, and to easily disconnect this connection. It is an object of the present invention to provide a connection structure for stacked containers.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

Figure 1 shows an example in which the present invention is applied to a heat-retaining lunch box. 1 is a wide-mouth metal vacuum double bottle, with an inner bottle 2 and an outer bottle 3 joined at their upper ends, and a space between the inner and outer bottles. is used as the vacuum chamber 4. A substantially L-shaped flange 5 with an upwardly protruding tip is provided around the outer periphery of the mouth of the vacuum double bottle 1.

Reference numeral 6 denotes a resin exterior body with a bottom that covers the outer surface of the vacuum double bottle 1. A stepped portion 7 is formed on the inner circumferential surface of the opening thereof, and a recessed portion 8 is formed above the stepped portion 7. Further, an annular rib 9 is protruded from the bottom of the exterior body 6, and the tip of this rib 9 is attached to the vacuum double bottle 1.
It faces the bottom surface with a gap. This gap is set to a size sufficient to absorb variations in the overall length of the vacuum double bottle 1. The exterior body 6 covers the outside of the vacuum double bottle 1 with a small gap, thereby preventing the vacuum double bottle 1 from swinging laterally.

10 is an annular shoulder body, and a protrusion 11 is provided on its outer peripheral surface.
is provided, and this protrusion 11 is connected to the exterior body 6.
By forcibly fitting into the recess 8 of the shoulder body 10
is fixed to the opening of the exterior body 6.

A sealing rubber 12 is pressed between the lower surface of the shoulder body 10 and the upper surface of the flange 5 of the vacuum double bottle 1 to seal the space between them.

Reference numeral 13 denotes an oblong rice bowl containing cooked rice, which is an example of a lower container (see Fig. 2), and a groove 14 is provided on the upper outer peripheral surface of the rice bowl 13 over approximately half the circumference. There is a recess 15 on the upper inner circumferential surface at a symmetrical position.
is provided. Further, a stepped portion 16 is formed around the entire circumference slightly above the recessed portion 15 on the inner circumferential surface of the rice bowl 13. Further, a dovetail groove portion 14a is formed in a part of the long axis parallel surface of the concave groove 14 (third
(see figure).

17 is a rice bowl lid which is an example of a drop lid, and upper member 1
8 and a lower member 19 are integrated by forced fitting, and a heat insulating space 20 that is hollow or filled with a heat insulating material is formed inside. A side wall 21 that protrudes upward is integrally erected at the upper end of the rice bowl lid 17, and a flange 22 that is placed on the step 16 of the rice bowl 13 is formed on the outer periphery of the upper edge of the side wall 21. has been done. Two knob walls 23 having the same height as the side walls 21 are erected in parallel on the upper surface of the rice bowl lid 17, and the side wall 21 located in the middle of the knob walls 23 has a position corresponding to the recess 15. A through hole 24 is bored in the.

Reference numeral 25 denotes a vegetable container, which is an example of an upper container, and the bottom of the vegetable container 25 has a locking rib 26 having a substantially L-shaped cross section that fits into the groove 14 of the rice bowl 13, and the recess 1.
A protruding piece 27 that fits into 5 is provided in a protruding manner. A part of the long axis parallel surface of the locking rib 26 is provided with the groove 14.
A recess 26a is formed to fit into the dovetail groove 14a provided in the dovetail groove 14a (see FIG. 4). Furthermore, the protrusion 27
has a protrusion 27a whose tip protrudes upward, and is forcibly fitted into the recess 15, and the dovetail groove and recess 26a
The fitting between the locking rib 26 and the groove 14 prevents the locking rib 26 from expanding, and the force fitting between the protrusion 27 and the recess 15 prevents the locking rib 26 and the groove 14 from being easily disengaged from each other. Furthermore, the heights of the locking ribs 26 and the protrusions 27 are the same, so that the vegetable container is stable when placed on a table or the like.

Note that 28 is a lid that is attached to the shoulder body 10.

Here, the rice bowl 13, the rice bowl lid 17, and the vegetable container 2
5 will be explained. First, the rice bowl lid 17 is fitted into the upper opening of the rice bowl 13 so that the through hole 24 and the recess 15 correspond to each other, and the flange 22 of the rice bowl lid 17 is fitted.
is placed on the stepped portion 16 of the rice bowl 13. Next, insert the protrusion 27 of the vegetable container 25 between the knob walls 23,
By sliding the vegetable container 25, the locking ribs 26 fit into the grooves 14, and the protrusions 27 fit into the recesses 15 through the through holes 24. Then, the protrusion 27a of the protrusion piece 27 is forcefully fitted into the recess 15, and is prevented from coming off. In this way, the rice bowl 13, the rice bowl lid 17, and the vegetable container 25 are connected, and if the vegetable container 25 protruding above the vacuum double bottle 1 is lifted, the rice bowl 13
can also be lifted together.

In the above embodiment, the top opening of the rice bowl 13 is covered with the rice bowl lid 17 (dropped lid), but instead of the rice bowl lid 17, the bottom surface of the vegetable container 25 is covered with the top end of the rice bowl 13. The opening may be covered. If the rice bowl lid 17 is used, the heat of the rice bowl 13 will not escape and the heat retention will be good, and the heat of the rice bowl 13 will not be conducted to the vegetable container 25, which is preferable in terms of function as a lunch box.

As is clear from the above description, according to the present invention, the locking rib and protrusion of the upper container are slidably engaged with the groove and the recessed portion of the lower container, thereby connecting the lower container and the upper container. Therefore, even if the lower container is an oval or rectangular container other than a cylindrical shape, it can be easily covered, and it can be easily taken out from an insulated container, and the connection can be easily removed.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of an example of the present invention applied to a heat-retaining lunch box, Figure 2 is an exploded perspective view of the main parts, and Figure 3 is an exploded perspective view of the main parts.
The figure is a - line enlarged sectional view of Figure 2, and Figure 4 is an enlarged cross-sectional view of Figure 2.
It is an enlarged view of the part shown in the figure. 13...Rice bowl (lower container), 14...Concave groove, 15
... Recessed part, 16 ... Stepped part, 17 ... Rice bowl lid (drop lid), 21 ... Side wall, 22 ... Flange, 24 ... Through hole, 25 ... Vegetable container (upper container), 26 ... Person in charge Stopping rib, 27... protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A groove is provided in a part of the outer peripheral surface of the upper part of the lower container, and a recess is provided in the inner peripheral surface of the upper part at a position symmetrical to this groove, while the bottom of the upper container is provided with a recessed part. A locking rib that fits into the groove and a protrusion that fits into the recess are provided, and the locking rib and the protrusion are slidably engaged with the groove and the recess of the lower container, respectively. A connecting structure of stacked containers that connects both containers. (2) forming a stepped portion on the upper inner peripheral surface of the lower container, and placing the outer peripheral portion of the drop lid on the stepped portion;
A connecting structure for stacked containers according to claim 1, wherein a through hole through which the projecting piece can be freely inserted is provided in a side wall of the drop lid corresponding to the recess.