JPH076174U - Air valve structure for food containers such as lunch boxes - Google Patents

Abstract

(57) [Summary] [Purpose] The air valve structure for food containers such as lunch boxes is liable to become dirty and unclean when placed in a wet state. A lid 1 of a food container having a recess 2 having a through hole 3 in the center, and an air valve 4 mounted through the through hole 3 are provided, and the air valve 4 has a groove 6 A stalk 7 that forms a large gap A between the collar-shaped head 5 whose rear surface side formed in the diametrical direction fits into the recess 2 of the lid 1, and the through hole 3 of the lid 1, and the lid. A thin bowl-shaped valve portion 8 whose peripheral portion abuts on the back surface of the body 1 is such that the outside of the groove 6 is connected to the outside air and the inside thereof is connected to the gap A, respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air valve structure for a food container such as a lunch box.

[0002]

[Prior art]

 If warm rice is put in a food container such as a lunch box and the lid is sealed, the internal pressure will drop when it cools and the lid will not open. As means for preventing this, for example, in Japanese Utility Model Laid-Open No. 3-102462, a flexible valve element is locked in an opening formed in a lid that seals the container body, and the lid communicates with the opening. A small exhaust hole is provided around the intake groove and opening, which is normally closed by the outer flange and inner flange of the valve body, but the internal pressure became higher than the specified value. In this case, a configuration is disclosed in which a small exhaust hole is opened by deformation of the outer flange of the valve body, and an intake groove is opened by deformation of the inner flange of the valve body when the internal pressure becomes lower than a predetermined value. It is being touched. As a result, the lid can be heated and thawed with the lid attached, and the lid can be easily opened even when it is cold.

[0003]

[Problems to be solved by the device]

 Since the above-mentioned valve body is constantly kept in a wet state, it easily becomes dirty, becomes unsanitary, and is susceptible to mold and the like. Therefore, there is a demand for frequent removal and cleaning. Nevertheless, the above-mentioned configuration has a structure in which it is difficult to remove or attach the valve body. The present invention aims to alleviate the above inconvenience.

[0004]

[Means for Solving the Problems]

 The present invention comprises a lid of a food container having a recess having a through hole at the center thereof, and an air valve mounted through the through hole, the air valve having a diametrical groove. The formed back side is a thick collar-shaped head 5 that fits into the recess 2 of the lid 1, the stem portion 7 that forms a large gap A between the through hole 3 of the lid 1, and the peripheral portion. Is composed of a thin bowl-shaped valve portion 8 that comes into contact with the back surface of the lid 1, and the concave groove 6 is characterized in that the outside thereof is connected to the outside air and the inside thereof is connected to the gap A, respectively.

[0005]

[Work]

 When the bowl-shaped valve body portion is applied to the front side of the mounting hole formed in the lid and pushed down with a finger, the flexible bowl-shaped valve body portion bends and passes through the mounting hole, and after passing, It returns to its original shape due to its elasticity, and the peripheral edge of the bowl-shaped valve body comes into close contact with the back surface of the lid to close the valve, and the valve body is attached.

[0006] During use, when the internal pressure of the container decreases, the peripheral portion of the bowl-shaped valve body portion is curved inward to form a gap between the lid and the back surface of the lid, thereby forming a communication path with the outside air, Make the pressure inside and outside equal. You can easily pull the valve upwards from the mounting hole by pushing the attached valve from the back side of the lid.

[0007]

【Example】

 In FIG. 1, reference numeral 1 is a lid of a container body (not shown). On the surface of the lid body 1, there is formed a depression 2 having a through hole 3 formed at a central portion. As shown in the drawing, the recess 2 accommodates the collar-shaped head 5 of the air valve 4 so that a relatively large gap A is formed between the through hole 3 and the stem portion 7 of the air valve 4. Also acts as a seat that restrains the air valve 4 from moving freely back and forth and left and right.

The size of the through hole 3 is such that it does not move freely after the air valve 4 is attached. The air valve 4 is made of an elastic material such as silicone rubber and has a collar-shaped head portion 5, a stem portion 7 and a bowl-shaped valve portion 8 which are integrally formed, but as shown in FIG. The stem stem 7 including the collar-shaped head 5 is made of synthetic resin such as EVA, and is integrated with the bowl-shaped valve portion 8 made of silicone rubber by adhesion, or has some elasticity as shown in FIG. It is also possible to form the collar-shaped heads 5 and 9 above and below the stem portion 7 with a synthetic resin, and integrate the bowl-shaped valve portion 8 made of silicon rubber by fitting.

[0009]

EFFECTS OF THE INVENTION According to the configuration of the present invention, since the recess formed in the lid serves as the position regulating means of the air valve, even if the distance A with the through hole is widened, the air valve is free to operate. On the other hand, the air valve was made impossible to move. On the other hand, by widening the gap between the air valve and the through hole, it was possible to easily remove the air valve, whether it was attached or removed. However, since the air valve has a simple shape that is easy to wash, it can be frequently removed and washed to keep it clean, and even if it is frequently removed and the thin bowl-shaped valve portion rubs against the through hole, However, the wear caused by this is almost negligible and does not cause any trouble. Also, even if the thick brim-shaped head of the air valve is pushed during use, the air valve will not come off inside. Even if atmospheric pressure is applied from the inside, it is held in a bowl shape and is held with high elasticity, so it can not be removed unless it is pressed with a finger.

[Brief description of drawings]

FIG. 1 is a cross-sectional view in which an air valve of a food container such as a lunch box according to the present invention is attached to a lid.

FIG. 2 is a sectional view of a second embodiment of the air valve.

FIG. 3 is a cross-sectional view in which an air valve according to a third embodiment is attached to a lid body.

[Explanation of symbols]

 1 Food Container Lid 2 Recess 3 Through Hole 4 Air Valve 5, 9 Collar-shaped Head 6 Recessed Groove 7 Shaft Stem 8 Bowl-shaped Valve A A Gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuko Hayashi 5-2-7 Koishikawa, Bunkyo-ku, Tokyo Rec Company

Claims (1)

[Scope of utility model registration request] 1. A lid 1 of a food container having a recess 2 having a through hole 3 in the center thereof, and an air valve 4 mounted through the through hole 3, the air valve 4 being a concave groove. A ridge-shaped head portion 5 having a back surface side formed with 6 in the diametrical direction and fitted into the recess 2 of the lid body 1, and a stem portion 7 forming a large gap A between the through hole 3 of the lid body 1; A lunch box characterized in that it comprises a thin bowl-shaped valve portion 8 whose peripheral portion abuts on the back surface of the lid body 1, the outside of the groove 6 is connected to the outside air, and the inside thereof is connected to the gap A, respectively. Air valve structure for food containers such as boxes.