JPS6228176Y2 - - Google Patents

Description

[Detailed explanation of the idea] Technical field This idea concerns the structure of a bento box.

BACKGROUND ART Lunch boxes for storing and carrying food have traditionally had a structure in which a seal is interposed between the main body case and the lid to prevent food juices and odors from leaking out. However, with such a structure, as the food inside the box cools, negative pressure builds up inside the box, making it difficult to remove the lid. For this reason, if a small ventilation hole was installed in a selected location, not only would the odor leak, but there would also be concerns that juice, etc., would leak out. For this reason, a separate plug for the ventilation hole was sometimes provided, but in this case there were problems such as the risk of losing the plug and a complicated structure.

Purpose Taking the above circumstances into consideration, the purpose of this invention is to provide a lunch box with an extremely simple structure and a ventilation hole that can be opened and closed.

Configuration In order to solve this problem, in this invention, an accommodating section for accommodating chopsticks etc. is formed in a part of the main body case or the lid, and an opening/closing plate for opening and closing the accommodating section is provided, and the accommodating section Alternatively, a ventilation hole passing through the inside and outside is formed in the vicinity thereof, and a part of the opening/closing plate is provided with a closing plate that closes the ventilation hole when the accommodating portion is closed.

Embodiments Hereinafter, embodiments of this invention will be described based on the drawings. In Figures 1 to 4, the main body case 2 of the lunch box 1 has a bottomed box shape with a rectangular planar shape, and the upper end of the side wall is bent outward at right angles around the entire circumference. It has a flange 2a.
A pair of protrusions 3 are protruded from the upper part of the outer surface of the side wall on the long side at symmetrical positions, and a shaft hole 3a is formed in the center of each protrusion 3. Both ends of a snap bar 4 formed by bending a wire into a substantially C-shape are inserted into the pair of shaft holes 3a, 3a. A roller 5 is rotatably supported in the center of the snap bar 4. The snap bar 4 can swing around the shaft holes 3a, 3a.

The lid 6 that opens and closes the upper opening of the main body case 2 (the part surrounded by the flange 2a) has an inner rib 7 having an external dimension slightly smaller than the upper opening of the main body case 2 on the lower surface of the lid 6 near the outer periphery. Has it all around. A seal accommodating portion 9 having a constant width is formed on the outside of this inner rib 7.

A ring-shaped seal 18 with a rectangular cross section is fitted and held in the seal accommodating portion 9 of the lid 6. In the central part of the outer wall 8 on the long side, from its tip,
A latching portion 10 of constant width is provided which extends outwardly at right angles. A recess 10a that matches the outer surface of the roller 5 described above is machined on the upper surface of the hooking portion 10 in parallel to the long side direction.

A housing section 11, which is a recessed section for housing chopsticks, is provided on the top surface of the lid 6 in a diagonal direction thereof. In the upper part of the longitudinal side wall of this storage part 11, guide grooves 12 having a constant height and a constant depth running in a direction substantially parallel to the upper surface of the lid 6 are provided until they reach the sides of the lid side slope 14, which will be described later. Processed.
The upper and lower surfaces of this guide groove 12 are formed by guide surfaces 12a and 12.
b, the opening/closing plate 1 having a constant convex cross section
The sliding portions 13a on both sides of the opening/closing plate 13 are guided to enable sliding movement of the opening/closing plate 13 along the housing portion 11. A recess 13a is formed on the upper surface of one end of the opening/closing plate 13 for hanging a finger.

Now, on the extension of the distal end side of the accommodating part 11, there is a fourth
As shown in the figure, the lower guide surface 12 of the guide groove 12
A lid-side slope 14 having a constant slope that starts from a depth b and gradually becomes shallower in the direction of entry of the opening/closing plate 13 is provided. A small-diameter ventilation hole 15 is provided that penetrates from the bottom surface to the bottom surface. A closing plate 16 whose lower surface forms a slope 17 parallel to the lid side slope 14 is integrally formed at the tip of the opening/closing plate 13 with a length sufficient to cover the ventilation hole 15. . When the opening/closing plate 13 is inserted and the housing portion 11 is closed, the slope 17 of the closing plate 16 comes into contact with the lid side slope 14, and covers and closes the ventilation hole 15 from above.

In the above configuration, when the lid 6 is fitted into the upper opening of the main body case 2, the lower end portion of the inner rib 7 on the lower surface fits into the main body case 2 to determine the position, and the seal 18 is attached to the flange 2a of the main body case 2.
The bottom surface touches. When the snap bar 4 is rotated upward in this state, the roller 5 is moved to the hook 1 of the lid 6.
0 tip. Further, when the snap bar 4 is rotated upward, this latching portion 10 and the main body case 2
By elastically deforming the side wall of the roller 5, the seal 18, etc., the roller 5 moves over the tip of the hook 10 and rotates to a position where its outer surface abuts the recess 10a. In this state, the lower surface of the seal 18 and the main case 2
The lid 6 is in close contact with the flange 2a, and the lid 6 is clamped to the main body case 2.

Next, after storing the chopsticks in the accommodating part 11, the opening/closing plate 13 is inserted into the guide groove 12 of the accommodating part 11, and the recess 10
When a is placed with a finger and slid forward, the opening/closing plate 13 is guided by the guide surfaces 12a and 12b and moves smoothly to close the accommodating portion 11. Then, the slope 17 of the closing plate 16 that extends integrally with the tip of the opening/closing plate 13 comes into close contact with the lid-side slope 14 provided in the extending direction of the accommodating portion 11, thereby stopping the sliding of the opening/closing plate 13. do. At this time, the slope 17 completely closes the ventilation hole 15 and makes the inside of the lunch box 1 completely airtight. Therefore, juice will not come out from the vent hole 15. Furthermore, when the slope 17 rides on the lid side slope 14, a force is generated between these slopes 14 and 17 to press each other against each other,
As a result, a frictional force is generated and the opening/closing plate 13 is reliably held in that position.

Next, in order to take out the chopsticks during a meal, when the opening/closing plate 13 is pulled out with a force that overcomes the frictional force described above, the slope 17 and the lid side slope 14 are separated, and the ventilation hole 1
Air enters from 5 and the negative pressure is released. As a result, the lid 6 can be easily removed by rotating the snap bar 4 outward and downward to disengage the hooking portion 10.

In the above embodiments, the guide surfaces 12a and 12b of the guide groove 12 of the housing section were provided linearly, but the fifth
As shown in the figure, the upper and lower guide surfaces 12a and 12b may be curved downward at the tip of the guide groove 12. By doing this, the closing plate 16 extending from the opening/closing plate 13 is guided by the guide surface 12a and slides obliquely downward, so that the close contact between the slope 17 and the lid side slope 14 becomes more reliable. .

Further, in this embodiment, the ventilation hole 15 is provided on the longitudinal extension of the housing portion 11, but the ventilation hole 15 is
The position of 5 is not limited to this, but may be in the vicinity of the accommodating portion 11.

Effects As explained above, this invention provides a lunch box that has a main body case, a lid, and a seal interposed between them, and provides a storage section in a part of the main case or the lid, and provides a storage section near the storage section. The opening/closing plate that is inserted into the accommodating part to open and close the accommodating part is provided with a closing plate that closes the vent when the accommodating part is closed. Since the lid can be closed and opened easily, it has the effect that food juices and odors do not leak, and the lid can be opened and closed easily.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a bento box showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 4 is a Figure B-
FIG. 5 is a partially enlarged cross-sectional view taken along the line B, and is a partial cross-sectional view of the lid in the same cross-section as FIG. 4, showing another embodiment of the guide surface. Main body case...2, lid...6, housing section...1
1. Guide surface...12a, opening/closing plate...13, ventilation hole...15, blockage...16, slope...17, seal...18.

Claims (1)

[Claims for Utility Model Registration] 1. A main body case 2 for storing food, a lid 6 for opening and closing the upper opening of the main body case 2, and a seal 18 interposed between the main body case 2 and the lid 6. In the bento box, a housing part 11 for storing chopsticks etc. is formed in a part of the main body case 2 or the lid 6, and an opening/closing plate 13 for opening and closing the housing part 11 is provided, and the housing part 11 or the A ventilation hole 15 passing through the inside and outside is formed nearby, and a closing plate 1 is provided in a part of the opening/closing plate 13 to close the ventilation hole 15 when the accommodating part 11 is closed.
A bento box characterized by having a number 6. 2. The ventilation hole 15 is provided in the lid 6,
The lunch box according to claim 1, wherein the closing plate 16 closes the ventilation hole 15 by coming into close contact with the outer surface of the lid 6. 3. The accommodating part 11 and the opening/closing plate 13 are elongated, and the opening/closing plate 13 opens and closes the accommodating part 11 by sliding in the longitudinal direction, and the closing part 16 is integrally formed at the front end of the opening/closing plate 13. A lunch box according to claim 2 of the utility model registration claim. 4 The opening/closing plate 13 has the inner surface of the closing plate 16 formed in an oblique shape so that it becomes thinner toward the tip, and the outer surface of the lid 6 at the portion facing the slope 17 has the slope 1.
7. The lunch box according to claim 3 of the utility model registration claim, which is formed obliquely along the line 7. 5 A guide surface 12a is formed on the lid 6 to guide the sliding of the opening/closing plate 13.
a is a lunch box according to claim 3 or 4, which is configured to move the closing plate 16 in the close contact direction when the opening/closing plate 13 slides to the closing position of the vent hole 15; box.