JPH0568862U - Airtight container with aeration plug - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a closed container with a vent plug, which can surely shield the air passage for eliminating negative pressure in the container and seal the container, and which can easily eliminate negative pressure. And [Structure] A female threaded portion is formed in a plug mounting hole provided in the lid of the closed container, and a male threaded portion that engages with the female threaded portion is formed in the vent plug, and a head portion formed on the upper portion of the male threaded portion has a diameter larger than the male threaded portion. In addition, a plug packing with a diameter larger than the female thread is attached to this vent plug, and one end of the vent passage is opened inside the plug packing diameter with the vent plug attached to the lid from above. The other end was opened to the container body side, and when the ventilation plug was tightened, the plug packing abuts the upper surface of the lid and the ventilation plug to block the ventilation of the ventilation passage.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a closed container with a vent plug capable of eliminating a negative pressure state in the closed container.

[0002]

[Prior Art]

 If you put warm things in a closed container and cover it with a lid, the pressure inside the container will decrease as it cools, and the inside of the container will become a negative pressure.

As a countermeasure against this negative pressure, as shown in FIG. 3, a closed container having a pressure reducing valve 53 mounted in a mounting hole 52 penetrating the lid 51 is commercially available. The pressure reducing valve 53 is made of a flexible material such as silicon rubber, has a cylindrical core portion 54 having a diameter substantially equal to the diameter of the mounting hole 52, and an upper flange thickly formed above the core portion 54. 55 and a lower flange 56 that is thinly formed on the lower side of the core portion 54, and has a thread winding shape, and a ventilation groove 57 is opened on the lower side surface of the upper flange 55. Are continuously provided from the lower surface of the upper flange 55 to near the lower end of the side surface of the core portion 54, and the distance between the upper flange 55 and the lower flange 56 is formed to be slightly smaller than the wall thickness of the mounting hole 52. The pressure reducing valve 53 is configured such that the lower flange 56 is inserted into the mounting hole 52 from the upper side and is passed through to the lower side, and the lid 51 is sandwiched between the upper flange 55 and the lower flange 56 with the edge of the mounting hole 52 sandwiched therebetween. When the inside of the container 50 has a negative pressure and the central portion of the head of the pressure reducing valve 53 is pressed, the pressure reducing valve 53 is deformed and the lower end of the ventilation groove 57 is pushed out to the lower surface of the lid 51. The outside air enters the container 50 through the ventilation groove 57, and the negative pressure is released.

The conventional pressure reducing valve 53 formed in this way requires sufficient flexibility in order to bend the lower flange 56 and pass through the mounting hole 52 as described above, and for example, the mounting hole When the radius of 52 is about 6 mm, the lower flange 56 has a radius of about 8 millimeters. For example, the lower flange 56 has a slightly larger diameter than the mounting hole 52 to facilitate mounting in the mounting hole 52. I couldn't.

Since the pressure reducing valve 53 has sufficient flexibility as described above, when the pressure inside the container 50 becomes a strong negative pressure, the pressure of the pressure reducing valve 53 attracted to the inside of the container 50 by the negative pressure causes the pressure reducing valve 53 to move. Since it is flexible and weakens the force of pressing the lower flange 56 against the back side of the lid 51, the lower flange 56 is only in light contact with the back side of the lid 51, and the head of the pressure reducing valve 53 also hits and pushes lightly. In some cases, the lower end of the ventilation groove 57 of the pressure reducing valve 53 was exposed to the lower side of the lid 51, and the outside air sometimes entered the container 50. Moreover, when the outside air enters the container 50 and the negative pressure becomes weaker, the force of drawing the pressure reducing valve 53 toward the inside of the container 50 becomes weaker. Therefore, if the force of pressing the center of the head of the pressure reducing valve 53 is weak, the ventilation groove 57 is formed. The lower end of the container is not exposed below the lid 51, the outside air stops flowing into the container 50, and the container 50 remains in a weak negative pressure state. Even if this weak negative pressure is as low as about 0.1 kilogram per square centimeter, if the surface area of the lid 51 covering the open end of the closed container is 250 square centimeters, this negative pressure is negative. The force with which the lid 51 is pressed against the container body by the pressure is 25 kg, and the lid 51 cannot be easily opened. Therefore, in order to completely eliminate the negative pressure, it was necessary to keep pressing the center of the head of the pressure reducing valve 53 strongly, but like the children in the lower grades of elementary school, the fingertips could not be used dexterously and the fingertips could not be used. It was difficult for a weak person.

Moreover, the radius of the lower flange 56 is only slightly larger than the radius of the mounting hole 52, and as described above, the lower flange 56 is in contact with the back side of the lid 51 in a small area with a slight pressing force. Therefore, if the pressure reducing valve 53 is slightly distorted, or if there is a little dust or scratches on this abutting part, air leakage will occur from that part, and outside air will gradually enter the container 50 against the user's intention. I was sucked in.

Therefore, when the inside of the container 50 becomes a negative pressure, even if the user does not press the pressure reducing valve 53, the conventional closed container sometimes goes against the outside air in the container 50 against the intention of the user. There was a drawback that bacteria and dust in the air would be sucked in and waste of sterilization by cooking. In addition, when the fingertips are not dexterous and the finger strength is weak like children in the lower grades of elementary school, it is difficult to completely press down the center of the pressure reducing valve 53 to completely eliminate the negative pressure. The closed container had a drawback that it was difficult to use. Moreover, in order to attach and detach this conventional pressure reducing valve 53 for cleaning, it is necessary to bend the lower flange 56 to pass through the mounting hole 52 of the lid 51. When passing through this mounting hole 52, The pressure reducing valve 53 may be damaged, and it has a drawback that it is difficult for an amateur to handle.

[0008]

[Problems to be solved by the device]

 This invention solves the above-mentioned drawbacks, that is, the above-mentioned drawbacks in which bacteria and dust in the air are sucked into the container together with the outside air without using the pressure reducing valve by the user to waste the sterilization by heating and cooking. At the same time, it intends to provide an airtight closed container that is easy to handle.

[0009]

[Means for Solving the Problems]

 This invention discloses a hermetically sealed container having at least a container body and a lid fitted with a packing that abuts against the open end of the container body, in which a lid mounting hole is formed in the lid and a female screw portion is formed in the plug mounting hole. However, the vent plug formed separately from this lid is provided with a male screw portion that is screwed into the female thread portion and a head portion formed above the male screw portion and having a diameter larger than that of the male screw portion. Install a plug packing with a diameter larger than the above female thread on the vent plug, and with the lid fitted with the vent plug covering the container body, open one end of the vent passage to the inside of the plug packing diameter on the top surface of the lid. The other end of the ventilation passage is opened to the container body side, and when the ventilation plug is tightened, the plug packing abuts the upper surface of the lid and the ventilation plug to block the ventilation of the ventilation passage. Then, the above-mentioned problems were solved.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of an airtight container embodying the present invention, in which a rectangular container body 1 made of polycarbonate has a flange portion 3 formed at an opening end 2.

The lid 4 that covers the open end 2 of the container body 1 is also made of polycarbonate, and has an annular groove 5 that opens downward on the outer periphery of the lower surface. A silicone rubber packing 6 is attached to the groove 5 so as to come into close contact with the open end 2 of the container body 1 when the lid 4 is put on the container body 1. A pair of support shafts 7, 7 are formed outwardly on the two opposite sides of the lid 4, and the pair of support shafts 7, 7 face each other with shaft holes 8, 7. 8 is provided.

A mortar-shaped recess 9 is provided on the upper surface of the lid 4, and a plug mounting hole 10 penetrating the lid 4 is formed at the center of the recess 9, and an inner peripheral surface of the plug mounting hole 10 is formed. A female screw portion 11 is formed on the. Further, an air passage 12 is formed by notching the edge and the female screw portion 11 at the edge of the plug mounting hole 10, and one end of the air passage 12 is opened on the upper surface of the lid 4. And the other end is open to the lower surface of the lid 4.

The fastener 13 made of polycarbonate and having a width substantially the same as the distance between the support shafts 7, 7 has an inverted L-shaped cross section, and shafts 14 are formed on both sides of the upper end. The shaft 14 is fitted in the shaft hole 8 and the fastener 13 is rotatably mounted on the lid 4. A locking protrusion 16 is provided inside the hanging plate portion 15 of the fastener 13, and when the fastener 13 is hung, the locking protrusion 16 engages with the lower end of the flange portion 3 of the container body 1. Then, the lid 4 is fastened to the container body 1. The inside of the hanging plate portion 15 means the side of the container body 1 in a state where the lid 4 is covered on the container body 1 and the fastener 13 is hooked. The lower end side of the hanging plate portion 15 is curved outward to form a finger hook portion 17.

A male screw portion 19 to be screwed with the female screw portion 11 is formed in the lower portion of the polypropylene ventilation plug 18, and a head portion 20 having a diameter larger than that of the male screw portion 19 is formed in the upper portion. The lower surface of the head portion 20 is formed with a spindle-shaped portion 21 having a smaller diameter on the lower side in conformity with the shape of the concave portion 9 of the lid 4, and the male screw portion 19 is connected to the lower side thereof. The spindle-shaped portion 21 is provided with a plug packing mounting groove 22 having a diameter larger than that of the female threaded portion 11, which is substantially horizontally and shallowly provided, and a plug packing 23 made of silicone rubber having elasticity is mounted. With the ventilation plug 18 attached, the ventilation passage 12 opens inside the diameter of the plug packing 23.

Next, a method of using the airtight closed container of the present invention will be described. First, hot food such as cooked rice which is not yet adhering to bacteria in the air, such as cooked rice, is packed into the container body 1, the lid 4 is covered, the fastener 13 is put on, and the aeration plug 18 is tightened. At this time, the vent plug 18 presses the plug packing 23 into the recess 9 of the lid 4 with a strong force by screwing, and even if there is a slight scratch or dust on the part where the plug packing 23 contacts, The plug packing mounting groove 22 and the concave portion 9 of the lid 4 are brought into close contact with each other. In this state, the ventilation passage 12 is open to the inside of the plug packing 23, so that the ventilation passage 12 is covered with the ventilation plug 18, the ventilation of the ventilation passage is blocked, and the container is completely sealed.

Subsequently, if this container is left in a hermetically sealed state, the air pressure inside the container decreases as it cools, resulting in a significantly negative pressure compared to the outside air. At this time, the food in the container is put into the container with almost no bacteria adhering immediately after heating, and the pressure in the container becomes low when it is cold, so the oxygen necessary for the propagation of bacteria is released to the outside air. Compared to the inside of the container is small. Therefore, it takes a long time for the food in the container to reach a rotten state, that is, the time for a large amount of germs to propagate, so compared to the conventional closed container equipped with a pressure reducing valve If food is added, it will not rot easily and will last a long time.

When the airtight container of this embodiment, which has been cooled and brought to a negative pressure state, is opened, first, the ventilation plug 18 is loosened for about a quarter to a half rotation. At this time, since the plug packing 23 is fitted in the plug packing mounting groove 22, the plug packing 23 is lifted up together with the ventilation plug 18 and separated from the recess 9 of the lid 4, and passes through the ventilation passage 12 from the gap between the plug packing 23 and the lid 4. The outside air flows into the container, and the negative pressure is quickly eliminated. Next, when the fastener 13 is removed, the negative pressure in the container has already been released, so that the lid 4 can be easily opened.

When the closed container of this embodiment is washed, the ventilation plug 18 may be continuously rotated in the direction in which it loosens, and the ventilation plug 18 may be removed from the plug mounting hole 10 for washing. When the vent plug 18 is removed, no unreasonable force is applied to the plug packing 23 and the part where the plug packing 23 abuts, so that there is no fear of damaging the plug packing 23 and the plug packing abutting part, and it can be handled easily.

The material of each component is not limited to this embodiment, and may be any one that can contain hot food immediately after cooking. Further, the ventilation passage is not limited to that of this embodiment, and it is sufficient that the ventilation passage is opened inside the diameter of the plug packing in a state where it is mounted in the plug mounting hole. The passage may be formed vertically or a through hole may be provided near the edge of the plug mounting hole in addition to the plug mounting hole to form a ventilation path. Further, the method of attaching the plug packing to the vent plug is not limited to the above, and the plug packing is brought into close contact with the vent plug and the recess 9 of the lid 4 in a state where the vent plug is tightened, so that the vent passage is closed. It suffices if it can block the breathability.

[0020]

[Effect of the device]

 As described above, in the closed container with a vent plug of the present invention, the vent plug is screwed into the cap mounting hole provided in the lid, and the vent passage is opened inside the diameter of the plug packing. Therefore, by loosening the ventilation plug about 1/4 to a half turn, the outside air is quickly sucked into the container through the ventilation passage through the gap between the plug packing and the lid, and anyone can easily reduce the negative pressure in the container. It has an excellent feature that you can remove it and open the lid. However, even when sealing, the ventilation passage is covered by the ventilation plug by tightening the ventilation plug, and the strong force of the screwing makes the plug packing come into close contact with the plug packing mounting groove and the recess of the lid. The excellent feature is that even if there is a slight scratch or dust on the part where the plug packing comes into contact, the ventilation of the ventilation passage can be blocked and the seal can be completely sealed. Furthermore, when the airtight closed container with a vent according to the present invention is to be washed after use, it may be removed by turning the vent to loosen it. At this time, the plug packing is not deformed or rubbed against the corners of the mounting hole unlike the conventional pressure reducing valve, so the plug packing will not be damaged by the attachment / detachment of the ventilation plug, and is easy to handle. There is a feature.

[Brief description of drawings]

FIG. 1 is a partially omitted exploded perspective view showing an embodiment of a closed container with a vent plug according to the present invention.

FIG. 2 is a partially omitted sectional view showing an embodiment of a closed container with a vent plug according to the present invention.

FIG. 3 is a partially omitted sectional view showing a main part of a conventional closed container with a pressure reducing valve.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 2 Open end 4 Lid 6 Packing 10 Plug mounting hole 11 Female screw part 12 Vent passage 18 Vent plug 19 Male screw part 20 Head part 23 Plug packing

Claims (1)

[Scope of utility model registration request] 1. A closed container having at least a container body and a lid fitted with a packing that abuts an open end of the container body, wherein a lid mounting hole is formed in the lid, and a female screw portion is formed in the plug mounting hole. However, the vent plug formed separately from this lid is provided with a male screw part that is screwed into the female screw part and a head portion formed on the upper part of the male screw part with a diameter larger than the male screw part. In addition to installing a plug packing with a diameter larger than the above-mentioned female screw part, open one end of the ventilation passage inside the diameter of the plug packing on the upper surface of the lid with the lid equipped with the ventilation plug covering the container body. The other end is opened to the container body side, and when the ventilation plug is tightened, the plug packing abuts the upper surface of the lid and the ventilation plug to block the ventilation of the ventilation passage. Airtight closed container.