JPS5818727Y2 - Makunouchi bento box - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bento box made of synthetic resin that accommodates a Makunouchi bento.

This type of lunch box has traditionally been used in restaurants and restaurants, etc. Up until now, a box-shaped body covered with a lid and a partition plate housed in it has generally been used, but the lid, The box-shaped body and the partition plate must be washed separately with water, which is time-consuming and difficult to obtain at a low price.Recently, the box-shaped body has a partition wall and is used as a partition plate. is being prized.

However, when a partition wall is integrally formed within a box-shaped body, shrinkage during molding causes sink marks on the outer surface of the thick joint between the partition wall and the peripheral wall of the box-shaped body, as shown in Figure 5. mark)
However, the outer surface of the peripheral wall of the box-shaped body becomes distorted and spoils the appearance.

Therefore, the present invention aims to improve the structure of the lunch box and provide a lunch box that does not have the above-mentioned defects, is easy to wash, and can be used cleanly.

To explain the bento box of the present invention based on the drawings, the box-shaped body 10
In a lunch box consisting of a box-shaped body and a lid 20 that covers the box-shaped body, the four corners of the box-shaped body and the lid peripheral walls 10', 20' are formed into rounded portions 11, 21, and the inside of the box-shaped body 10 is Vertical and horizontal partition walls 12.13 are provided to accommodate several storage areas 14.
. . . A rounded portion 15.16 which has a partition shape and opens the joint between the peripheral wall 10' of the box-shaped body and the partition wall 12.13 and the joint between the partition walls 12.13 in an arc shape to both sides, respectively. A thick joint 17 is formed by forming a thick joint 17, and a rounded portion 15 is formed from the center of the bottom of each joint 17 with the top remaining in the height direction of the joint.
, 16 is provided, and the hole 18 is filled with a synthetic resin adhesive.

Note that the box-shaped body 10 and the lid 20 are mold-molded using synthetic resin materials separately, and if an isosceles triangular raised portion is provided in the portion of the mold facing the hole 18, ,
Holes 18 corresponding to the raised portions are bored in the peripheral wall 10' of the box-shaped body, the partition walls 12.13, and the thick joints 16 between the partition walls 12.13. As a result of the material shrinking as it cools, sink marks occur on the outer surface of thick parts due to the shrinkage.In the present invention, holes 18 are drilled in the thick joints and the flesh is shaved to eliminate sink marks. There is no possibility that this will occur.

Furthermore, the product of the present invention can be manufactured economically by making a relatively simple modification of providing a raised portion to a conventional molding die.

- However, in the present invention, the four corners of the peripheral wall of the box-shaped body 10 and the lid are formed into rounded portions 11, 21, and the peripheral wall 10' of the box-shaped body, the partition walls 12, 13, and the joints between the partition walls are formed on both sides, respectively. It is formed into rounded parts 15 and 16 that open in an arc shape, and it is convenient because it can be smoothly removed from the mold during molding, and when washing with water during use, it is possible to easily wash away food scraps, etc. In a clean state, rice and other dishes are placed in several storage areas 14 divided by the partition walls 12 and 13 of the box-shaped body 10 as appropriate. It is covered with a lid, closed, and served for meals.

On the other hand, rounded portions 15 and 16 are provided at the center of each thick joint portion 17.
An isosceles triangular-shaped hole 18 that opens along is bored from the bottom of the box-shaped body in the height direction of the joint 17, leaving the top part intact, and the meat is shaved off in that area and becomes thinner, and the molding time There is no risk of sink marks occurring on the outer surface of the peripheral wall of the main body, and the holes are drilled across the bottom of the box-shaped body, leaving the top of the joint, so they are not visible from the outside, so it will spoil the appearance. The holes are filled with a synthetic resin adhesive, etc., which prevents dirt from entering the holes.
Effects such as being able to retain the shape in a firm and strong state due to the stiffness provided by 7 can be obtained.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a plan view of only the in-phase main body, Fig. 3 is a bottom view of the same, Fig. 4 is a sectional view taken along the line A-A in Fig. 2, and Fig. 5 The figure is a longitudinal cross-sectional view of a conventional product. 10... Box-shaped body, 10'... Peripheral wall, 1
1...R section, 12.13...Partition wall, 14...Accommodation section, 15.16...
Rounded part, 17...Joint part, 18...
Hole, 20...Lid, 21...Peripheral wall, 21
・・・・・・R club.

Claims (1)

[Scope of utility model registration request] In a lunch box consisting of a box-shaped body and a lid, the four corners of the box-shaped body and the peripheral wall of the lid are formed into rounded parts, and partition walls are provided inside the box-shaped body to partition several storage parts, The joints between the peripheral wall of the mold and the partition walls, as well as the joints between the partition walls, are formed into rounded parts that open on both sides in an arc shape to create thick joints, and the height of the joint is measured from the center of the bottom of each joint. An isosceles triangular hole corresponding to the rounded part is provided, leaving the top in the direction.
Five boxes of Makunouchi valves with the holes filled with synthetic resin adhesive.