Air supply / discharge device

Abstract

To provide an air supply / discharge device that can attach an air supply / discharge valve even if a hole for the air supply / discharge valve is not provided in a storage bag for storing an object to be stored such as food, evacuate the inside of the storage bag and return the state of the inside to an atmospheric pressure state.SOLUTION: An air supply / discharge device includes: an air supply / discharge valve fixed to be attachable to / detachable from a storage bag; and a boring tool having an upper end opening of the air supply / discharge valve as a guide. The air supply / discharge valve has a front surface side structure section having an annular upper flange section attachable to a front surface side of the storage bag, a back surface side structure section having an annular lower flange section attachable to a back surface side of the storage bag, and a valve operation section having a disc-shaped valve element that can be pressed against or separated from a valve seat section, a coil spring that is interposed between a lower surface of a valve lid section and an upper surface of the valve element and has biasing force in an elongation direction, and a valve rod penetrated into the coil spring in a valve chamber formed in the front surface side structure section. The air supply / discharge device can be fixed to the storage bag in an airtight contact manner, attachably and detachably by screwing.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] To provide an air supply and exhaust device that can create a vacuum in a storage bag having a zipper part for sealing an opening for putting in and taking out stored items such as food, even if the storage bag has no hole for an air supply and exhaust valve, and can return the inside of the storage bag in which the stored items are stored in a vacuum state to atmospheric pressure. [Background technology]

[0002] Patent Document 1 discloses an intake valve for a vacuum compression bag, which includes an upper lid, an inner lid, and a lower lid, the lower lid being inside the vacuum compression bag and the upper lid being outside the vacuum compression bag, an intake pipe being installed inside the inner lid, an insertion port at the top of the intake pipe, a fixed cover being installed at the bottom of the intake pipe, forming a fixed tub with the fixed cover and the intake pipe installed inside, a hole protrusion being installed at the top of the lower lid, an intake spacer installed at the bottom of the hole protrusion covering the top of the intake port, the lower lid and the inner lid being fixed and connected by the hole protrusion being inserted into the fixed tub, a hole punching device being installed in the upper lid, a tip of the hole punching device being inserted into the hole protrusion of the lower lid, a plurality of conductive spacers being installed at the bottom of the lower lid, and the conductive tub being formed with the intake port connected between adjacent conductive spacers.

[0003] Patent Document 2 discloses a bag-shaped compression storage bag in which two thin sheets made of flexible and non-breathable soft material are superimposed on one another, and an opening through which an object to be stored can be inserted or removed is formed on the periphery of the thin sheets, the compression storage bag comprising: a zipper part made of flexible and non-breathable soft material, fused to each of the two thin sheets at the portion where the opening is formed, the zipper part having a convex part of the same length as the opening and a concave groove part into which the convex part can be fitted, making it possible to seal the opening; and an exhaust / intake valve body part made of flexible and non-breathable soft material, which is fixed by airtight adhesion to the periphery of a hole provided at a predetermined position on the thin sheets to allow air to flow in and out, and which protrudes from the thin sheets and can exhaust or intake air; the exhaust / intake valve body part has an upper end and a ceiling support part that is annular in plan view and protrudes integrally from the inner peripheral wall of the cylindrical frame part along the circumferential direction at a height spaced apart from the surface of the thin sheet and at a height that can be grasped with fingers from the outer peripheral surface of the cylindrical frame part. The ceiling support part has a ceiling formed integrally with the ceiling support part and has slits in a predetermined range along the circumferential direction, which radially covers the hole formed by the ceiling support part. The disclosed compression storage bag comprises a cylindrical frame part that is approximately cylindrical and has a circular opening that is thick in the radial direction and has a flat, annular flange at its lower end that is airtightly adhered to the thin sheet. The ceiling support part has a circular ring shape in plan view and protrudes integrally from the inner peripheral wall of the cylindrical frame part along the circumferential direction at a height that is spaced apart from the surface of the thin sheet and at a height that can be grasped with fingers from the outer peripheral surface of the cylindrical frame part. The disclosed compression storage bag comprises a cylindrical frame part that is approximately cylindrical and has a circular opening that is thick in the radial direction and has a flat, annular flange at its lower end that is airtightly adhered to the thin sheet. The ceiling support part has a circular ring shape in plan view and protrudes integrally from the inner peripheral wall of the cylindrical frame part along the circumferential direction at a height that can be grasped with fingers from the outer peripheral surface of the cylindrical frame part. The disclosed compression storage bag has a valve body part that can be deformed by applying pressure in the radial direction to open the valve body part, allowing air to flow, and that can be changed to a closed state so that air can be blocked by releasing the pressure and returning to its original shape.

[0004] Patent Document 3 discloses a ventilator valve that is used in a state where it is attached to a bag body with a zipper that opens and closes an opening for putting in and taking out stored items, and that has a backflow prevention function that prevents air from flowing from the outside of the bag body into the inside while allowing air to flow out from the inside of the bag body to the outside. The ventilator valve comprises a base body made of a bottom plate with an exhaust hole formed in the center or near the center and side plates standing from the edges of the bottom plate, a lid body that has a concave-convex fitting portion formed on its underside in the center and has an exhaust hole formed therein and is attached to the upper end of the base, and a valve body that has a flexible, disk-shaped on-off valve portion formed on its upper center surface with a concave-convex fitting portion that fits into the concave-convex fitting portion of the lid body. When the concave-convex fitting portion of the valve body is fitted into the concave-convex fitting portion of the lid body and the lid body is attached to the upper end of the base, the on-off valve portion of the valve body comes into contact from above around the exhaust hole of the bottom plate and is elastically deformed, so that the exhaust hole of the bottom plate is blocked by the on-off valve portion.

[0005] Patent Document 4 describes a packaging bag for parcel delivery goods that has a valve in the combination of an outer layer sheet, a mat, and a cushioning material filled in the mat, in which the outer layer sheet is a surface protective cover for the mat, and the mat is folded in half to form a holder with at least one side open, and the mat is filled with a cushioning material, and when the air in the mat is removed and the volume of the mat decreases, the cushioning material conforms to the shape of the goods stored in the holder, increasing the filling density, and solidifies to imitate the surface shape of the goods, thereby absorbing external impacts. The valve is a combination of a check valve and an intake valve, and the check valve opens when the suction force of the pump is applied during degassing of the mat and closes after degassing to prevent the introduction of outside air into the mat. The intake valve opens when a push button is operated to allow the introduction of outside air into the evacuated mat. The check valve and intake valve are incorporated in a valve box attached to the mat, and the valve box is detachably connected to a coupler attached to the pump or the intake port of a hose connected to the pump.

[0006] Patent Document 5 discloses an air plug for injecting and expelling air into a bag, which comprises a cylindrical air intake and exhaust section that is open at the top and has a movable bottom at the bottom, and a plug section that is connected to the outside of the air intake and exhaust section via a flexible connecting band, and which is characterized in that the plug section has a disk-shaped top surface that connects to the connecting band, a cylindrical section that is provided on the back surface of the top surface and is inserted into the air intake and exhaust section when sealing, and a pair of tabs that protrude in the shape of ears on both sides that are perpendicular to the top surface and parallel to the surface of the top surface, and are perpendicular to the point where the top surface connects to the connecting band. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Utility Model Registration No. 3195835 [Patent Document 2] Patent No. 7343726 [Patent Document 3] Utility Model Registration No. 3173542 [Patent Document 4] Japanese Patent Application Laid-Open No. 2010-132323 [Patent Document 5] Japanese Patent Application Laid-Open No. 2017-46949 Summary of the Invention [Problem to be solved by the invention]

[0008] The device in Patent Document 1 had the problem that the hole punching device was installed inside the inner lid and the air supply spacer was located below, making it difficult to punch a hole in the storage bag. Also, there was the problem that the zipper, which sealed the opening in a vacuum state and tightly attached the contents to the storage bag, made it extremely difficult to open with one's fingers.

[0009] The invention of Patent Document 2 has the problem that the exhaust / intake valve body must be made of a soft material so that it can be held with the fingers, making it more difficult to produce with a three-dimensional printer than harder materials. Also, while it can be distributed on the market in the form of a storage bag containing the exhaust / intake valve body, it cannot be used with storage bags that do not have holes for the exhaust / intake valve body, meaning that the exhaust / intake valve body alone cannot be distributed on the market. Another problem is that while the storage bag can be used repeatedly, the exhaust / intake valve body is fixed with adhesive and cannot be removed, meaning that the intake / exhaust valve alone cannot be used repeatedly.

[0010] The device in Patent Document 3 has the problem that when opening the bag after sucking out the air inside the bag to create a vacuum, it is difficult, especially for elderly people and children with weak fingers, to open the part where the two sheets are tightly attached by the vacuum. In this case, the bag must be cut with scissors or the like to remove the contents, which means the bag cannot be reused. Another problem is that it cannot be used on storage bags that have a zipper to seal the opening but do not have a hole for the air intake / exhaust valve.

[0011] The invention in Patent Document 4 has a structure that allows the bag to be vented and air to be supplied after the air has been removed, so the bag can be reused, but the structure is complex, which makes it expensive and difficult to use. Also, there is a problem that it cannot be used with storage bags that have a zipper to seal the opening but do not have a hole for the air intake and exhaust valve.

[0012] The invention of Patent Document 5 has the problem that the valve can be pinched with fingers when the bag is used in a state where the contents are stored in the bag without evacuating the air and the sheet of the bag is not in close contact with the contents, but when the bag is used with the contents stored in the bag in close contact with the sheet of the bag, the valve is almost in contact with the sheet, so it cannot be pinched with fingers and the valve cannot be opened. Also, there is the problem that it cannot be used with storage bags that have a zipper to seal the opening but do not have a hole for the air intake / exhaust valve.

[0013] The present invention was made in view of these problems, and aims to provide an air supply and exhaust device that can create a vacuum inside a storage bag having a zipper part that seals an opening for putting in and taking out stored items such as food, even if the storage bag does not have a hole for an air supply and exhaust valve, and can return the storage bag in which the stored items are stored in a vacuum state to atmospheric pressure without having to force the tightly closed zipper part with fingers. [Means for solving the problem]

[0014] The air intake and exhaust device described in claim 1 is an air intake and exhaust device made of a non-breathable material that allows for the exhaust of air from or the supply of air to a sealable storage bag that does not have a hole for an air intake and exhaust valve, and the air intake and exhaust device includes an air intake and exhaust valve that is detachably fixed to the storage bag, and a hole punch with a blade at its lower end that uses the upper opening of the air intake and exhaust valve as a guide, and the air intake and exhaust valve includes the upper opening provided at the upper end of a substantially cylindrical valve peripheral wall portion, an annular upper flange portion provided at the lower end of the valve peripheral wall portion that contacts the surface side of the storage bag, and a valve mechanism having a valve body and a coil spring that blocks or flows air inside the valve peripheral wall portion. and a back-side structural part that can be attached to the back side of the storage bag, the back-side structural part having a valve chamber with a moving part installed therein and a surface-side structural part that can be attached to the surface side of the storage bag, an annular lower flange part that faces the upper flange part and contacts the back side of the storage bag, and an air hole that allows air to flow inward in the radial direction of the lower flange part, and a valve seat part that forms the bottom of the valve chamber, and the back-side structural part can be attached to the back side of the storage bag, and by pushing the hole punch into the upper end opening, it is possible to drill holes for air intake and exhaust valves in the storage bag, and the surface-side structural part and the back-side structural part can be screwed together to be fixed to the storage bag in airtight contact and detachable.

[0015] The air intake and exhaust device described in claim 2 is an air intake and exhaust device made of a non-breathable material that allows for the exhaust of air from or the supply of air to a sealable storage bag that does not have a hole for an air intake and exhaust valve, the air intake and exhaust device comprising an air intake and exhaust valve detachably fixed to the storage bag, and a hole punch that uses an upper end opening of the air intake and exhaust valve as a guide, the air intake and exhaust valve comprising a front side structural part that can be attached to the front side of the storage bag, and a back side structural part that can be attached to the back side of the storage bag, the front side structural part comprising a valve peripheral wall part that forms the peripheral wall of a valve chamber, and a valve peripheral wall part that extends above the valve chamber the upper end opening, into which the substantially cylindrical punching tool can be fitted, provided in an extension part disposed in the valve chamber; a disc-shaped valve cover part, which forms the upper wall of the valve chamber and has a flat contact surface on its upper surface against which the lower end of the punching tool can contact, and which has a valve stem hole and an air hole formed therein; and an annular upper flange part, which is provided radially outward from the lower end of the valve peripheral wall part and which is in airtight contact with the surface of the storage bag; and the back side structure part, which faces the upper flange part and is in airtight contact with the back side of the storage bag, a valve operating section provided within the valve chamber, the valve operating section including: a circular valve seat portion having an air hole formed inside and forming a bottom wall of the valve chamber; a disk-shaped valve body that can be pressed against or separated from the valve seat portion; a coil spring that has a biasing force in an extension direction and is interposed between the lower surface of the valve lid portion and the upper surface of the valve body; and a valve stem that has a lower end connected to the valve body, penetrates inside the coil spring, is inserted through the valve stem hole and can protrude from the upper end opening; and air can be supplied to or exhausted from the storage bag by pushing the punch into the upper end opening. The valve hole can be machined, the upper flange portion of the front side structural part and the lower flange portion of the back side structural part can be fixed to the storage bag in airtight contact and detachably by screwing together, the portion integrated with the annular seat portion can be arranged by screwing together so that the seat portion forms the bottom wall of the valve chamber, the valve body can be pressed against the valve seat portion by the biasing force of the coil spring, and the valve body can be separated from the valve seat portion by suction of a vacuum means inserted into the upper end opening or by moving the valve rod upward.

[0016] The air intake and exhaust device of claim 3 is characterized in that, in claim 2, the valve cover portion is of a first valve cover form in which the valve peripheral wall portion and the valve cover portion are integrated, or a second valve cover form in which the valve cover portion is divided into a first annular, jaw-shaped valve cover portion that forms the abutment surface and protrudes radially inward from the valve peripheral wall portion around the entire circumferential direction, and a disk-shaped second valve cover portion that abuts against the underside of the annular first valve cover portion and forms the valve stem hole and the air hole.

[0017] The air supply and exhaust device of claim 4 is characterized in that, in claim 1 or 2, a groove portion is provided on at least the lower surface of the valve seat portion, the groove portion communicating from the inner peripheral edge of the valve seat portion to the outer peripheral edge in the radial direction.

[0018] The air supply and exhaust device described in claim 5 is characterized in that, in claim 1 or 2, the punch has a cylindrical portion that can be inserted into the upper opening, and the lower end of the cylindrical portion is provided with a plurality of triangular blades with pointed acute-angled tips that run around the entire circumference, the blades becoming thinner as they approach the tip, and the upper end of the cylindrical portion is provided with an operating portion that allows it to be pushed down or rotated. [Effects of the Invention]

[0019] The air intake and exhaust device described in claim 1 or 2 has the effect of being able to create a vacuum inside a storage bag that has a zipper part that seals the opening for putting in and taking out stored items such as food, even if there is no hole for an air intake and exhaust valve or even if an air intake and exhaust valve is not attached, and being able to return a storage bag in which stored items are stored in a vacuum state to atmospheric pressure without having to forcefully pry open the tightly sealed zipper part with your fingers.

[0020] Furthermore, regardless of the thickness or material of the storage bag, it is possible to create a vacuum inside the storage bag by opening a hole for an intake and exhaust valve in a storage bag that has a zipper part for sealing the opening for putting in and taking out food or other stored items but does not have an intake and exhaust valve hole, or does not have an intake and exhaust valve attached.

[0021] Furthermore, since the holes for the intake and exhaust valves can be opened anywhere in the storage bag, the holes for the intake and exhaust valves can be opened in appropriate positions depending on the size and thickness of the items to be stored.

[0022] The air intake / exhaust valve can be fixed to the storage bag by a screw structure rather than by adhesive, which has the effect of enabling repeated use.

[0023] The intake / exhaust valve does not need to be tightly gripped with fingers, so it does not need to be manufactured from soft synthetic resin, and can be manufactured from metal or hard synthetic resin, which has the effect of facilitating manufacturing using a three-dimensional printer.

[0024] The air supply and exhaust device according to claim 3 has the advantage that the shape of the valve lid portion having the valve stem hole and the air hole can be appropriately selected in consideration of ease of manufacturing and cost.

[0025] The air intake and exhaust device described in claim 4 has the effect of ensuring a gap between the stored item and the bottom of the air intake and exhaust valve through which air can be sucked out when a vacuum is created and there is a small amount of air remaining in the storage bag, thereby making it possible to create a vacuum without leaving any air inside the storage bag, and ensuring a gap through which air can be sent in when the stored item and the bottom of the air intake and exhaust valve are in tight contact with each other due to the vacuum, making it possible to send air into the evacuated storage bag.

[0026] The air intake and exhaust device according to claim 5 has an advantage that the punching tool has a sharp blade, so that holes for the air intake and exhaust valves can be easily punched in the storage bag regardless of the thickness or material of the storage bag. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 2 is a front view of the air intake and exhaust device of the present invention, illustrating an air intake and exhaust valve and a hole punch. [Figure 2] 2 is an explanatory diagram of a vertical cross section taken along the center line of FIG. 1, showing an intake / exhaust valve and a hole punching tool; FIG. [Figure 3]3 is an explanatory cross-sectional view of the state in which the punching tool is pushed into the intake / exhaust valve from the state in FIG. 2. FIG. [Figure 4] FIG. 2 is an explanatory diagram of one form of intake / exhaust valve, and is a cross-sectional explanatory diagram of a form in which the valve peripheral wall portion is divided and the valve lid portion is divided. [Figure 5] FIG. 10 is an explanatory diagram of another embodiment of the intake / exhaust valve, and is a cross-sectional explanatory diagram of an embodiment in which the valve peripheral wall portion is divided. [Figure 6] FIG. 10 is an explanatory diagram of another embodiment of the intake / exhaust valve, and is a cross-sectional explanatory diagram of an embodiment in which the valve peripheral wall portion is divided and the lower flange portion and the valve seat portion are divided. [Figure 7] FIG. 10 is an explanatory diagram of another embodiment of the intake / exhaust valve, showing a cross-sectional view of a configuration in which the valve peripheral wall portion is not divided, the valve lid portion is not divided, and the lower flange portion and the valve seat portion are divided. [Figure 8] 8 is an explanatory diagram showing a state in which a hose and a joint of a vacuum means are attached to the air supply / exhaust valve shown in FIG. 7 fixed to a storage bag, and suction is being performed by the vacuum means. [Figure 9] 8 is an explanatory diagram showing the state in which the air intake / exhaust valve shown in FIG. 7 is fixed to the storage bag and the shutoff lid is attached by screwing it after the storage body is evacuated. [Figure 10] FIG. 8 is an explanatory diagram showing a state in which air at atmospheric pressure is sent into a storage bag in a vacuum state using the air supply / exhaust valve shown in FIG. 7. [Figure 11] FIG. 8 is an explanatory plan view of the intake / exhaust valve shown in FIG. 7. [Figure 12] FIG. 8 is an explanatory diagram of the intake / exhaust valve shown in FIG. 7 as seen from below. [Figure 13] 8A and 8B are explanatory diagrams of components of the intake and exhaust valve shown in FIG. 7, which have a front structural portion and a partial back structural portion, where (a) is an explanatory diagram from a plan view, (b) is an explanatory diagram from a front view, (c) is an explanatory diagram of the AA cross section in (a), and (d) is an explanatory diagram from a bottom view. [Figure 14] 8A and 8B are explanatory diagrams of the components of the intake and exhaust valve shown in FIG. 7, illustrating the lower flange portion, where (a) is an explanatory diagram from a plan view, (b) is an explanatory diagram from a front view, (c) is an explanatory diagram of the BB cross section in (a), and (d) is an explanatory diagram from a bottom view. [Figure 15]8A and 8B are explanatory diagrams of the components of the intake and exhaust valve shown in FIG. 7, illustrating the seat portion, where (a) is an explanatory diagram of a plan view, (b) is an explanatory diagram of a front view, (c) is an explanatory diagram of a CC cross section in (a), and (d) is an explanatory diagram of a bottom view. [Figure 16] The figures are explanatory diagrams of longitudinal cross sections of valve operating parts with different gripping parts and coil spring shapes. (a) is an explanatory diagram of a longitudinal cross section of a valve operating part in which the gripping part is fixed to the valve stem by screwing and the diameter of the coil spring is small, and (b) is an explanatory diagram of a longitudinal cross section of a valve operating part in which the gripping part is bent at the tip of the valve stem and the diameter of the formed coil spring is large. [Figure 17] 5 is an explanatory plan view of the valve cover portion of the air supply / exhaust valve shown in FIG. 4 on which a valve stem hole and an air hole are provided. FIG. [Figure 18] 1A and 1B are explanatory diagrams of a punching tool, in which (a) is an explanatory diagram from a front view, (b) is an explanatory diagram from a plan view, and (c) is an explanatory diagram of the blade portion of the EE cross section of (a). [Figure 19] FIG. 8 is an explanatory diagram of the state in which the air intake / exhaust valve shown in FIG. 7 is placed inside a storage bag, and a punching tool is placed on the surface side of the storage bag so that the punching tool can be pushed toward the upper opening of the air intake / exhaust valve. [Figure 20] 18 is an explanatory diagram of the moment when the hole punching tool is pushed downward from the state of FIG. 17 to punch a hole in the storage bag. [Figure 21] FIG. 10 is an explanatory diagram of a plan view of a storage bag without holes for intake and exhaust valves. [Figure 22] 10 is an explanatory diagram of a storage bag in which a hole for an intake / exhaust valve has been punched using a hole punching tool, without any hole for an intake / exhaust valve. FIG. [Figure 23] 8 is an explanatory diagram of the state immediately before the intake and exhaust valve shown in FIG. 7 is fixed to the storage bag with the intake and exhaust valve holes opened. [Figure 24] 5 is an explanatory diagram of the state immediately before the intake and exhaust valve shown in FIG. 4 is fixed to the storage bag with the intake and exhaust valve holes opened. [Figure 25] 1 is a plan view illustrating a state in which the air intake / exhaust valve of the present invention is attached to a storage bag. FIG. [Figure 26] 24 is an explanatory view of the cross section DD in FIG. 23 in a state where the air intake / exhaust valve of the present invention is attached to the storage bag. FIG. [Figure 27]This is an explanatory diagram of the state in which a fish is stored as an object inside the storage bag and a vacuum is created. DETAILED DESCRIPTION OF THE INVENTION

[0028] The air intake and exhaust device 1 of the present invention is an air intake and exhaust device 1 that can create a vacuum inside a storage bag 80 having a zipper part 82 that seals the opening through which stored items 90 such as fish or other food are put in and taken out, even if there is no hole 81 for an air intake and exhaust valve in the storage bag 80, and can return the inside of the storage bag 80 in which stored items 90 are stored in a vacuum state to atmospheric pressure without having to pry open the zipper part 82.

[0029] As shown in FIG. 21, the air intake and exhaust device 1 of the present invention is made of a non-breathable material and allows for the exhaust of air from or the supply of air to a sealable storage bag 80 that does not have an air intake and exhaust valve hole 81 formed therein. As shown in FIGS. 1 to 3, the air intake and exhaust device 1 includes an air intake and exhaust valve 2 that is detachably fixed to the storage bag 80, and a hole punch 3 that uses an upper end opening 12 of the air intake and exhaust valve 2 as a guide and has a blade 41 at its lower end. As shown in FIGS. 4 to 7, the air intake and exhaust valve 2 includes upper end opening 12 formed at the upper end of a substantially cylindrical valve surrounding wall 11, an annular upper flange 14 formed at the lower end of the valve surrounding wall 11 and in contact with the surface side of the storage bag 80, and a valve element 31 that blocks or flows air inside the valve surrounding wall 11. and a valve chamber 7 having a valve operating unit 6 having a coil spring 32 therein, and a front-side structural part 4 attachable to the front side of the storage bag 80; an annular lower flange part 21 facing the upper flange part 14 and in contact with the back side of the storage bag 80; and a back-side structural part 5 attachable to the back side of the storage bag 80, the back-side structural part 5 having an air hole 24 for flowing air inward in the radial direction of the lower flange part 21 and a valve seat part 22 forming a valve seat 22a which forms the bottom of the valve chamber 7, and by pushing the hole punching tool 3 into the upper end opening 12 it is possible to drill a hole 81 for an intake / exhaust valve in the storage bag 80, and the front-side structural part 4 and the back-side structural part 5 can be screwed together to be detachably fixed to the storage bag 80 in airtight contact.

[0030] 21, the air intake and exhaust device 1 of the present invention is made of a non-breathable material and allows for the exhaust of air from or the supply of air to a sealable storage bag 80 that does not have an air intake and exhaust valve hole 81, and as shown in FIGS. 1 to 7, the air intake and exhaust device 1 comprises an air intake and exhaust valve 2 that is detachably fixed to the storage bag 80, and a hole puncher 3 that uses an upper end opening 12 of the air intake and exhaust valve 2 as a guide, and the air intake and exhaust valve 2 comprises a front side structural part 4 that can be attached to the front side of the storage bag 80, and a back side structural part 5 that can be attached to the back side of the storage bag 80, and the front side structural part 4 has a valve chamber 7 that is formed of a material that is non-breathable. the upper end opening 12, which is provided at an extension of the valve peripheral wall 11 above the valve chamber 7 and into which the substantially cylindrical punch 3 can be fitted; a disc-shaped valve cover 13, which forms the upper wall of the valve chamber 7 and has a flat abutment surface 17 on its upper surface against which the lower end of the punch 3 can abut, and which has a valve stem hole 15 and an air hole 16 formed therein; and an annular upper flange 14, which is provided radially outward from the lower end of the valve peripheral wall 11 and which is in airtight contact with the surface of the storage bag 80; and the back side structure 5 faces the upper flange 14 and is configured to abut against the upper end opening 12 of the storage bag 80. a circular annular lower flange portion (21) that is in airtight contact with the back surface of the valve chamber (80); and a circular annular valve seat portion (22) that is provided radially inward from the lower flange portion (21) and forms the bottom wall of the valve chamber (7), and has an air hole (24) formed on the inside thereof; a disc-shaped valve element (31) that can be pressed against or separated from the valve seat portion (22); a coil spring (32) that has a biasing force in an extension direction and is interposed between the lower surface of the valve lid portion (13) and the upper surface of the valve element (31); and a valve stem (33) that has a lower end connected to the valve element (31), penetrates inside the coil spring (32), passes through the valve stem hole (15), and can protrude from the upper end opening (12). a valve operating section (6) provided within the valve chamber (7) having a valve actuating section (6) having a valve element (31) and a valve seat (22) formed therein, wherein a hole (81) for an intake / exhaust valve can be formed in the storage bag (80) by forcing the hole punch (3) into the upper end opening (12), the upper flange section (14) of the front side structural section (4) and the lower flange section (21) of the back side structural section (5) can be fixed to the storage bag (80) in an airtight contact manner and detachably by screwing together, a portion integrated with the annular seat section (22) can be arranged by screwing together such that the seat section (22) forms the bottom wall of the valve chamber (7), and the valve element (31) can be pressed against the valve seat section (22) by the biasing force of the coil spring (32),The valve body 31 can be separated from the valve seat portion 22 by suction of a vacuum means 60 fitted into the upper end opening 12 or by moving the valve stem 33 upward.

[0031] The storage bag 80 targeted by the air intake and exhaust device 1 is a storage bag 80 that has a zipper 82 and can be sealed, as shown in Fig. 21, and has no holes other than the opening of the zipper 82 that would allow air to flow between the outside air and the inside of the bag. Storage bags 80 that do not have an air intake and exhaust valve hole 81 as shown in Fig. 21 can be sealed because of the zipper 82, but cannot be vacuumed, making it difficult to store raw food such as raw fish for long periods of time. The air intake and exhaust device 1 of the present invention is newly provided with an air intake and exhaust valve hole 81 as shown in Fig. 22, which allows it to be vacuumed and can also be returned to atmospheric pressure from the vacuum state.

[0032] When punching a hole in a holeless storage bag 80, the intake and exhaust device 1 uses an intake and exhaust valve 2 and a hole punching tool 3 as shown in FIGS. 1 to 3, 19, and 20. When creating a vacuum, the intake and exhaust valve 2 and a vacuum means 60 are used as shown in FIG. 8. When returning the vacuum state to atmospheric pressure, the valve stem 33 of the intake and exhaust valve 2 is pulled up as shown in FIG. 10, or a blower (not shown) is used as necessary. To maintain the vacuum, a shutoff cover 62 is screwed onto a threaded portion 55 as shown in FIG. 9 to create a sealed state. Except for the coil spring 32, valve seat 34, and O-ring seal 18, the intake and exhaust device 1 is made of a non-breathable material such as a synthetic resin such as plastic, or a metal such as stainless steel.

[0033] As shown in Figures 4 to 7, the air intake and exhaust valve 2 has as its main components the front side structural part 4 attached to the front side of the storage bag 80, the back side structural part 5 attached to the back side of the storage bag 80, and the valve operating part 6 installed inside the valve chamber 7 composed of the front side structural part 4 and the back side structural part 5, and the front side structural part 4 and the back side structural part 5 are removably fixed to the storage bag 80 by screwing together.

[0034] The valve chest 7 is composed of a peripheral wall formed by the valve peripheral wall portion 11, an upper wall formed by the valve lid portion 13, and a bottom wall formed by the valve seat portion 22. As shown in Figure 13(a) , the valve lid portion 13 has the abutment surface 17 formed on its upper surface, the valve stem hole 15 formed in its central portion, and one or more air holes 16 formed around the valve stem hole 15, while the valve seat portion 22 has an annular valve seat 22a formed on its upper surface and an air hole 24 formed radially inward, as shown in Figure 15 . After the valve actuation portion 6 is inserted into the valve chest 7, the integrated member including the valve seat portion 22 is disposed at a position that will become the bottom wall of the valve chest 7 by threading the threaded portion 52, 54, or 56.

[0035] The intake and exhaust valve 2 includes the front side structural portion 4, the back side structural portion 5, the valve actuation portion 6, and the valve chamber 7. The intake and exhaust valve 2 may have various configurations depending on the positions at which the front side structural portion 4, the back side structural portion 5, the valve actuation portion 6, and the valve chamber 7 are divided, as shown in Figs. 4 to 7, for example.

[0036] For example, as shown in Fig. 4, the intake and exhaust valve 2 may have a configuration in which the valve peripheral wall 11 is divided into an inner valve peripheral wall 11a and an outer valve peripheral wall 11b, the valve cover 13 is divided into a jaw-shaped second valve cover 13b having the abutment surface 17 and a disk-shaped first valve cover 13a abutting against the underside of the second valve cover 13b and having the stem hole 15 and the air hole 17, and the lower flange 21 is integrated with the valve seat 22, forming an intake and exhaust valve 2a. In the case of the intake and exhaust valve 2a, after inserting a valve operating member 6b as shown in Fig. 16(b) into the valve chamber 7, the integrated unit of the lower flange 21 and the valve seat 22 is screwed onto the inner valve peripheral wall 11a at the screw-fitting portion 52, and the outer valve peripheral wall 11b is screwed onto the inner valve peripheral wall 11a at the screw-fitting portion 53. In this manner, the intake and exhaust valve 2a is assembled.

[0037] For example, as shown in Fig. 5, the intake and exhaust valve 2 may have a configuration in which the valve peripheral wall portion 11 is divided into an inner valve peripheral wall portion 11a and an outer valve peripheral wall portion 11b, the inner valve peripheral wall portion 11a being integrated with the valve cover portion 13, the outer valve peripheral wall portion 11b being integrated with the upper flange portion 14, and the lower flange portion 21 being integrated with the valve seat portion 22, resulting in an intake and exhaust valve 2b. In the case of the intake and exhaust valve 2b, after inserting a valve actuating portion 6a as shown in Fig. 16(a) into the valve chamber 7, the integrated unit consisting of the lower flange portion 21 and the valve seat portion 22 is screwed onto the inner valve peripheral wall portion 11a at a screw-fitting portion 52, and the outer valve peripheral wall portion 11b is screwed onto the inner valve peripheral wall portion 11a at a screw-fitting portion 53. In this manner, the intake and exhaust valve 2b is assembled.

[0038] For example, as shown in Fig. 6, the intake and exhaust valve 2 may have a configuration in which the valve peripheral wall 11 is divided into an inner valve peripheral wall 11a and an outer valve peripheral wall 11b, the outer valve peripheral wall 11b is integrated at its lower end with the upper flange 14, the inner valve peripheral wall 11a is integrated at its upper end with the valve lid 13 and at its lower end with the lower flange 21, and the valve seat 22 is a standalone structure (i.e., intake and exhaust valve 2c). In the case of the intake and exhaust valve 2c, after inserting a valve operating member 6a as shown in Fig. 16(a) into the valve chamber 7, the valve seat 22 is threadedly engaged with the inner valve peripheral wall 11a at the threaded portion 54, and the outer valve peripheral wall 11b is threadedly engaged with the inner valve peripheral wall 11a at the threaded portion 53. The intake and exhaust valve 2c is assembled in this manner.

[0039] For example, as shown in Figure 7, 11 or 12, the intake and exhaust valve 2 may have a configuration in which the valve lid portion 13 is integrated with the valve peripheral wall portion 11 at the top, the valve peripheral wall portion 11 is integrated with the upper flange portion 14 at the bottom, the lower flange portion 21 is independent, and the valve seat portion 22 is also independent, resulting in an intake and exhaust valve 2d. In the case of the intake and exhaust valve 2d, after inserting a valve operating portion 6a as shown in Figure 16(a) into the valve chamber 7, the valve seat portion 22 is screwed onto the valve peripheral wall portion 11 at the screw portion 56, and the lower flange portion 21 is screwed onto the valve peripheral wall portion 11 at the screw portion 57. The intake and exhaust valve 2d is assembled in this manner.

[0040] The intake and exhaust valve 2 may be any type, not limited to the intake and exhaust valves 2a to 2d, as long as it has the constituent features of the front side structural portion 4, the back side structural portion 5, the valve operating portion 6, and the valve chamber 7. The following will mainly describe the intake and exhaust valve 2d. The plate thickness of the intake and exhaust valve 2 is set appropriately taking into consideration the strength, material, etc.

[0041] 7, 11, 12, or 13, the surface-side structural part 4 comprises: a valve peripheral wall part 11 that forms the peripheral wall of the valve chamber 7; the upper-end opening 12 that is provided on an extension of the valve peripheral wall part 11 that extends upward from the valve chamber 7 and into which the substantially cylindrical punching tool 3 can be fitted; a disk-shaped valve cover part 13 that forms the upper wall of the valve chamber 7 and has a flat abutment surface 17 on its upper surface against which the lower end of the punching tool 3 can abut, and that has a valve stem hole 15 and an air hole 16 formed therein; and an annular upper flange part 14 that is provided radially outward from the lower end of the valve peripheral wall part 11 and that is in airtight contact with the surface of the storage bag 80.

[0042] The valve surrounding wall 11 has a generally cylindrical portion that forms the peripheral wall of the valve chamber 7, and an extending portion that extends upward from the valve chamber 7 that forms the upper end opening 12 into which the generally cylindrical punch 3 can be fitted, and a lower end that forms an annular upper flange 14 that is in airtight contact with the surface of the storage bag 80, extending radially outward. A cylindrical portion is formed at the lower end that extends downward, radially inward from the upper flange 14 and outward from the valve chamber 7, and the inner peripheral surface of the cylindrical portion is threaded with a female screw 56b that threads with the valve seat 22, and the outer peripheral surface of the cylindrical portion is threaded with a male screw 57a that threads with the lower flange 21. The disc-shaped valve lid 13 that forms the upper wall of the valve chamber 7 is formed integrally with the valve surrounding wall 11, radially inward from the valve surrounding wall 11.

[0043] A female screw 55b is threaded on the inner surface of the upper end opening 12 for screwing in and fixing a fitting 61 to which a hose of the vacuum means 60 is connected, or for screwing in and fixing a blocking lid 62 when storing the stored item 90 in a vacuum state.

[0044] The valve circumferential wall portion 11 may be an integral type as shown in Fig. 7, or a split type as shown in Figs. 4 to 6. In the split type, the inner valve circumferential wall portion 11a and the outer valve circumferential wall portion 11b are connected by threading at a threaded portion 53. The integral type and the split type are different in the form of combination, and either may be used.

[0045] As shown in Figure 13, the valve cover portion 13 has an upper surface that corresponds to the bottom surface of the upper end opening 12, and forms a flat abutment surface 17 against which the lower end of the punching tool 3 can abut.It also has a valve stem hole 15 in the center that serves as a guide for inserting the valve stem 33, and one or more air holes 16 are provided around the valve stem hole 15 so that air can flow when a vacuum is created inside the storage bag 80 or when air is introduced into the storage bag 80.

[0046] The valve cover portion 13 may have a first valve cover form in which the abutment surface 17 and the stem hole 15 and air hole 16 are not separated, as shown in Figures 5 to 7, or a second valve cover form in which the valve cover portion 13 is separated into an annular, jaw-shaped second valve cover portion 13b that forms the abutment surface 17 and protrudes radially inward from the valve circumferential wall portion 11 over the entire circumferential direction, as shown in Figure 4, and a disk-shaped first valve cover portion 13a that forms the stem hole 15 and the air hole 16 and abuts against the underside of the annular second valve cover portion 13b, as shown in Figures 4, 16(b), or 17. The first valve cover form and the second valve cover form differ only in the form of a combination of whether they are separated or integrated, and either may be used.

[0047] 13, the upper flange portion 14 is provided radially outward from the lower end portion of the valve peripheral wall portion 11, and has an annular shape that is in airtight contact with the surface of the storage bag 80. An O-ring seal 18 is fitted into the lower surface of the upper flange portion 14, and blocks the flow of air from the joint between the upper flange portion 14 and the lower flange portion 21 when the storage bag 80 is sandwiched by screwing the lower flange portion 21 and the screw portion 57 together.

[0048] The back surface side structural portion 5 will now be described. The back surface side structural portion 5 includes an annular lower flange portion 21 that faces the upper flange portion 14 and is in airtight contact with the back surface of the storage bag 80, and an annular valve seat portion 22 that is provided radially inward from the lower flange portion 21 and forms the bottom wall of the valve chamber 7. An air hole 24 is formed radially inward of the annular valve seat portion 22.

[0049] 12 or 14, the lower flange portion 21 is annular, and sandwiches the upper flange portion 14, which is also annular, and the sheet portion 83 of the storage bag 80 from the front and back sides to detachably fix the air intake / exhaust valve 2 to the storage bag 80. Also, on the underside of the lower flange portion 21, as shown in FIGS. 4, 5, 7, 12 or 14(d), a groove portion 23b is formed that allows air to flow even when the stored object 90 and the air intake / exhaust valve 2 are in close contact in a vacuum state, and a female screw 57b is threaded into the groove portion 23b to be threaded with the threaded portion 57 at the lower end of the valve surrounding wall portion 11, as shown in FIG.

[0050] As shown in Fig. 15, the valve seat portion 22 has a flat upper surface serving as a valve seat 22a, and a valve seat 34 attached to the valve body 31 abuts against the valve seat 22a to tightly contact and block the flow of air or separate and allow the flow of air. Also, on the lower surface of the valve seat portion 22, as shown in Fig. 4, 5, 7, 13 or 15(d), a groove portion 23a is formed that allows the flow of air even when the stored object 90 and the air intake / exhaust valve 2 are tightly contacted in a vacuum state, and as shown in Fig. 15(b), a male screw 56a is threaded to be threaded with the threaded portion 56 at the lower end of the valve surrounding wall portion 11.

[0051] The shape of groove 23 differs depending on the shape of intake and exhaust valve 2, but any shape is acceptable as long as a gap is formed between the outer peripheral edge of the bottom surface of intake and exhaust valve 2 and air hole 24, between the stored object 90 and the bottom surface of intake and exhaust valve 2. For example, intake and exhaust valve 2a or 2b has lower flange 21 and valve seat 22 which are integral with each other, so groove 23 is a groove that connects the bottom surfaces of lower flange 21 and 22; intake and exhaust valve 2c has a bottom surface of valve seat 22 which protrudes downwardly from the bottom surface of lower flange 21, so a groove is provided only in the bottom surface of valve seat 22; and intake and exhaust valve 2d has lower flange 21 and valve seat 22 which are separate, so a groove is provided in each. In addition, the lower end surface of the valve surrounding wall portion 11 between the lower flange portion 21 and the valve seat portion 22 of the air intake / exhaust valve 2d is positioned above the bottom surfaces of the lower flange portion 21 and the valve seat portion 22 and is recessed so that the lower end portion of the valve surrounding wall portion 11 does not obstruct the flow of air.

[0052] The valve actuation section 6 will now be described. As shown in Figures 4 to 7 and 16, the valve actuation section 6 is disposed within the valve chamber 7, and includes a disk-shaped valve element 31 that can be pressed against or separated from the valve seat 22a of the valve seat portion 22, a coil spring 32 that has a biasing force in an extension direction and is interposed between the lower surface of the valve lid portion 13 and the upper surface of the valve element 31, and a valve stem 33 that has a lower end connected to the valve element 31, penetrates inside the coil spring 32, is inserted through the valve stem hole 15, and can protrude from the upper end opening 12.

[0053] The diameter of the valve disc 31 is smaller than the inner diameter of the valve circumferential wall 11 that forms the circumferential wall of the valve chamber 7, and a gap is provided between the outer peripheral edge of the valve disc 31 and the inner peripheral surface of the valve circumferential wall 11 to allow air to flow. Furthermore, as shown in Fig. 16, a valve seat 34 is attached to the valve disc 31 to improve adhesion with the valve seat 22a. The valve seat 34 may be made of any material that has sealing properties, including, but not limited to, synthetic rubber such as nitrile rubber, fluororubber, or ethylene propylene rubber; fluororesin; synthetic resin such as polyurethane or silicone; natural rubber; or a metal sheet.

[0054] When the vacuum means 60 is operating, the coil spring 32 draws the valve element 31 toward the vacuum means 60 and compresses it, but when the vacuum means 60 is not operating, the coil spring 32 exerts an expansion force to press the valve element 31 and the valve seat 34 against the valve seat 22a. The specifications of the coil spring 32 are appropriately set taking into consideration the suction force of the vacuum means 60, the separation state of the valve element 31 from the valve seat 22a due to operation of the vacuum means 60, the degree of force required to grasp and pull up the knob portion 35 of the valve stem 33 with fingers, and the state of air blocking when the valve element 31 is pressed against the valve seat 22a when the vacuum means 60 is not operating.

[0055] The valve stem 33 has a lower end connected to the valve body 31, passes through the coil spring 32, and is provided at its upper end with a knob 35. The shape of the knob 35 may be such that the tip of the valve stem 33 is machined into a ring shape, as shown in Fig. 16(b) illustrating the valve operating portion 6b, or such that the tip of the valve stem 33 is threaded with a male screw and a knob 35 having a female screw thread is screwed onto it, as shown in Fig. 16(a) illustrating the valve operating portion 6a. Any shape that can be held with fingers is acceptable, and is not limited to the above examples.

[0056] The connection state between the valve disc 31 and the valve stem 33 may be a fixed state with a constant connection angle or a variable connection state. The connection between the coil spring 32 and the valve disc 31 or the connection between the coil spring 32 and the valve cover portion 13 may be such that the coil spring 32, the valve cover portion 13, and the valve disc 31 are not connected to each other and are free to each other, as shown in Fig. 16(a) illustrating the valve operating portion 6a, or may be such that both ends of the coil spring are fixed to the valve cover portion 13 or the valve disc 31 by a fixing means such as welding, as shown in Fig. 16(b) illustrating the valve operating portion 6b.

[0057] Next, the hole punching tool 3 will be described. As shown in FIGS. 1 to 3, 18, 19, or 20, the hole punching tool 3 has a cylindrical shape that can fit into the hole in the upper end opening 12. As shown in FIGS. 18(a) and 18(c), the lower end is provided with a plurality of acute-angled triangular blades 41 around the entire circumference, with the blades 41 becoming thinner toward the tip. As shown in FIG. 18(a), the outer periphery is provided with an operating portion 42 that allows the tool to be pushed down or rotated. The upper end of the hole punching tool 3 has an upper wall, as shown in FIGS. 2, 3, or 18(b). The material of the hole punching tool 3 may be any material that can cut the sheet portion 83 of the film storage bag 80 when pressed against it, such as synthetic resins such as acrylic or hard plastic, or metals such as iron or stainless steel.

[0058] The shape of the blade 41 of the hole punch 3 does not have to be triangular at the lower tip, but as long as the thickness of the blade becomes thinner as it approaches the tip, and the blade can be pressed down hard in an instant to cut the sheet portion 83 of the storage bag 80, a triangular shape is preferable, but it does not have to be triangular.

[0059] Next, the method of use will be explained. First, there is the hole-making step. As shown in Fig. 21, the target storage bag 80 is one that has no holes other than the opening of the zipper portion 82 that would allow air to flow between the outside and the inside of the bag. Then, as shown in Fig. 19, the air intake / exhaust valve 2 is placed inside the storage bag 80, and it is moved to the position where a hole is to be made. The hole-making tool 3 is then placed so that the outer peripheral surface of the hole-making tool 3 fits inside the inner peripheral edge of the upper end opening 12 of the air intake / exhaust valve 2 placed at the position where a hole is to be made.

[0060] Then, as shown in FIG. 20, when the punching tool 3 is pressed downward in one go with a hand placed on the operating portion 42, the blade 41 opens an intake / exhaust valve hole 81 in the seat portion 83 as shown in FIG.

[0061] Next is the vacuum preparation step. As shown in FIG. 23, the intake / exhaust valve 2 (2d) is removed from the storage bag 80, and the lower flange portion 21 is removed from the intake / exhaust valve 2 (2d) by loosening the screws at the screw-on portion 57. Then, as shown in FIG. 23, the lower end of the valve peripheral wall portion 11 of the intake / exhaust valve 2 (2d) from which the lower flange portion 21 has been removed is fitted into the opened intake / exhaust valve hole 81 from the front side of the storage bag 80. The lower flange portion 21 is then placed into the storage bag 80, and the female screw 57b of the lower flange portion 21 is screwed into the male screw 57a of the valve peripheral wall portion 11 with the seat portion 83 sandwiched therebetween. As shown in FIG. 25 or 26, the intake / exhaust valve 2 (2d) is tightly and detachably fixed to the storage bag 80. Then, an object 90 is placed into the storage bag 80, and the storage bag 80 is sealed with the zipper portion 82.

[0062] When fixing the intake and exhaust valve 2 to the storage bag 80, there are two methods of attaching the intake and exhaust valve 2 to the storage bag 80: one method, as shown in FIG. 23, of fitting the intake and exhaust valve 2d, with the lower flange portion 21 removed, into the intake and exhaust valve hole 81 from the front side of the storage bag 80, and then placing the lower flange portion 21 removed from the intake and exhaust valve 2 into the storage bag 80 and screwing the lower flange portion 21 from below using the screw-on portion 57 to fix the intake and exhaust valve 2d to the storage bag 80; and one method, as shown in FIG. 24, of fixing the intake and exhaust valve 2a to the storage bag 80, with the outer valve peripheral wall portion 11b removed, placing the intake and exhaust valve 2a into the storage bag 80 so that it protrudes from the intake and exhaust valve hole 81, and then screwing the outer valve peripheral wall portion 11b removed from the intake and exhaust valve 2a from above using the screw-on portion 53 to fix the intake and exhaust valve 2a to the storage bag 80.

[0063] Next is the evacuation step. As shown in Fig. 8, the male screw of fitting 61 is screwed onto female screw 55b of upper opening 12 to secure it, and then the hose of the vacuum pump, which is vacuum means 60, is connected to fitting 61. Then, as shown in Fig. 8, when the vacuum pump is operated, valve element 31 rises and coil spring 32 compresses, causing air within storage bag 80 to flow through air hole 24, the gap between the outer periphery of valve element 31 and the inner periphery of valve peripheral wall 11, and air hole 16, and be sucked into the hose of vacuum means 60, thereby creating a vacuum within storage bag 80, as shown in Fig. 27. Even if the stored item 90 comes into contact with the lower surface of lower flange 21 or the lower surface of valve seat 22, grooves 23a and 23b ensure that no air remains within storage bag 80 and a vacuum is created.

[0064] Next is the storage step. The joint 61 is loosened and removed from the female screw 55b of the upper end opening 12, and a blocking cover 62 that serves as a lid for the upper end opening 12 is screwed onto it as shown in Figure 9, blocking the flow of air between the upper end opening 12 and the outside air. Also, when the operation of the vacuum means 60 is stopped, the coil spring 32 expands and presses the valve body 31 against the valve seat 22a, blocking the flow of air. This allows for long-term vacuum storage.

[0065] Next, the vacuum state inside the storage bag 80 is returned to atmospheric pressure. As shown in Figure 10, the shutoff cover 62 is loosened and removed, and the grip portion 35 at the upper end of the valve stem 33 is pulled upward with a finger. This compresses the coil spring 32, separating the valve body 31 from the valve seat 22a. Air then flows into the storage bag 80, sequentially through the upper end opening 12, the air hole 16, the gap between the outer edge of the valve body and the inner peripheral wall of the valve peripheral wall portion 11, the air hole 24, and the grooves 23b and 23a, and then into the storage bag 80, returning the interior of the storage bag 80 to atmospheric pressure. This allows even a person with weak finger strength to easily open the zipper portion 82. [Explanation of symbols]

[0066] 1. Air intake and exhaust system 2, 2a, 2b, 2c, 2d Intake and exhaust valves 3 hole punch 4 Surface side structure 5 Back side structure 6 Valve actuator 7 Valve chamber 11 Perivalve Wall 11a Inner valve wall 11b Outer valve peripheral wall 12 Top opening 13 Valve lid part 13a First valve cover part 13b Second valve cover part 14 Upper flange 15 Hole for valve stem 16 Air vents 17 Contact surface 18 O-ring seal 21 Lower flange 22 Valve seat 22a Valve seat 23 Groove 24 air vents 31 Valve body 32 coil spring 33 Valve stem 34 Valve seat 35 Grip 41 blades 42 Operation part 52 Threaded joint 53 Threaded joint 54 Threaded joint 55 Threaded joint 56 Threaded joint 57 Threaded joint 60 Vacuum means 61 Joint 62 Shut-off cover 80 Storage Bag 81 Intake and exhaust valve hole 82 Chuck part 83 Seat section 90 Items to be stored

Claims

1. An air intake and exhaust device made of a non-breathable material that allows air to be exhausted or supplied to a sealable storage bag that does not have an air intake and exhaust valve hole, the air intake and exhaust device includes an air intake and exhaust valve detachably fixed to the storage bag, and a punch having a blade at its lower end and using an upper opening of the air intake and exhaust valve as a guide; The intake and exhaust valve is a surface-side structure portion that can be attached to the surface side of the storage bag, the surface-side structure portion having an upper end opening provided at an upper end of a substantially cylindrical valve peripheral wall portion, an annular upper flange portion provided at a lower end of the valve peripheral wall portion and in contact with the surface side of the storage bag, and a valve chamber that has a valve body and a coil spring disposed inside the valve peripheral wall portion and that blocks or allows air to flow; a back side structure portion that can be attached to the back side of the storage bag, the back side structure portion having an annular lower flange portion that faces the upper flange portion and contacts the back side of the storage bag, an air hole that allows air to flow inward in a radial direction of the lower flange portion, and a valve seat portion that forms a valve seat that becomes the bottom surface of the valve chamber, This air intake and exhaust device is characterized in that holes for air intake and exhaust valves can be drilled in the storage bag by pushing the hole punch into the upper opening, and the front side structural part and the back side structural part can be screwed together to be fixed to the storage bag in airtight contact and detachably.

2. An air intake and exhaust device made of a non-breathable material that allows air to be exhausted or supplied to a sealable storage bag that does not have an air intake and exhaust valve hole, the air intake and exhaust device includes an air intake and exhaust valve detachably fixed to the storage bag, and a hole punch using an upper end opening of the air intake and exhaust valve as a guide; the air intake / exhaust valve includes a front structural part that can be attached to the front side of the storage bag, and a back structural part that can be attached to the back side of the storage bag, The surface side structure portion is a valve peripheral wall portion that forms a peripheral wall of the valve chamber; the upper end opening, which is provided in an extension portion of the valve peripheral wall portion extending upward from the valve chamber, and into which the substantially cylindrical punching tool can be fitted; a disk-shaped valve cover portion that forms an upper wall of the valve chest, the disk-shaped valve cover portion having a flat contact surface on its upper surface against which the lower end portion of the punch can contact, and having a valve stem hole and an air hole formed therein; an annular upper flange portion provided radially outward from a lower end portion of the valve peripheral wall portion and in airtight contact with a surface of the storage bag; The rear surface side structure portion is a circular lower flange portion that faces the upper flange portion and is in airtight contact with the rear surface of the storage bag; an annular valve seat portion having an air hole formed therein, the annular valve seat portion being disposed radially inward from the lower flange portion and forming a bottom wall of the valve chamber, a valve operating section provided within the valve chamber, the valve operating section including: a disc-shaped valve element that can be pressed against or separated from the valve seat; a coil spring that has a biasing force in an extension direction and is interposed between a lower surface of the valve lid portion and an upper surface of the valve element; and a valve stem that has a lower end connected to the valve element, penetrates inside the coil spring, and is inserted through the valve stem hole and can protrude from the upper end opening, By pushing the hole punching tool into the upper end opening, it is possible to drill a hole for an intake / exhaust valve in the storage bag, the upper flange portion of the front-side structural portion and the lower flange portion of the back-side structural portion can be fixed to the storage bag in an airtight and detachable manner by screwing together, and the portion integrated with the annular seat portion can be arranged by screwing together so that the seat portion forms a bottom wall of the valve chamber, The valve body can be pressed against the valve seat by the biasing force of the coil spring, and the valve body can be separated from the valve seat by suction from a vacuum means fitted into the upper end opening or by moving the valve rod upward.

3. 3. The air intake and exhaust device according to claim 2, wherein the valve cover portion is in a first valve cover form in which the valve peripheral wall portion and the valve cover portion are integrated, or in a second valve cover form in which the valve cover portion is divided into a first annular, jaw-shaped valve cover portion that protrudes radially inward from the valve peripheral wall portion around the entire circumferential direction and forms the abutment surface, and a second circular valve cover portion that abuts against the underside of the first annular valve cover portion and forms the valve stem hole and the air hole.

4. 3. The air intake and exhaust device according to claim 1, wherein a groove is provided on at least the lower surface of the valve seat, the groove extending from the inner peripheral edge of the valve seat to the outer peripheral edge in the radial direction.

5. The air intake and exhaust device according to claim 1 or 2, characterized in that the punching tool has a cylindrical portion that can be inserted into the upper opening, and the lower end of the cylindrical portion is provided with a plurality of triangular blades with pointed, acute-angled tips that extend around the entire circumference, the blades becoming thinner as they approach the tips, and the upper end of the cylindrical portion is provided with an operating portion that allows the tool to be pushed down or rotated.

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