JP7441384B2 - Valve device used in compression bags - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law Towa Sangyo Co., Ltd. will be holding a Reiwa Sangyo Co., Ltd. The "valve device" and "compression bag equipped with the valve device" shown in attached photos 2 and 3 were made public until February 6, 2019.

The present invention relates to the technical field of household storage products, and more particularly to a valve device used in a compression bag.

Conventional household compression bags are equipped with an air valve that allows air to pass in one direction. By aligning the surface of this air valve with a suction port provided on a household vacuum cleaner or other suction device capable of generating negative pressure and suctioning air, air intake inside the compression bag is performed.

On the other hand, the suction ports of recent suction devices are not only cylindrical with a perfect circle or ellipse cross-section, but also have a trapezoidal or convex polygonal cylindrical shape, and even have a protrusion on the tip along the axial direction. There are many different types, such as those with holes or notches.

When using the above-mentioned recent suction devices to perform air intake processing on conventional home-use compression bags, if the suction port has a protrusion or notch, the suction port may be attached to the hard surface of the air valve. It doesn't fit well with the parts, leaving a rather large gap between them. As a result, a problem arises in that the intake effect is reduced. In addition, even if the suction port is not provided with protrusions or notches, if the outer diameter of the suction port is larger than the air valve, the air valve will enter a blind spot due to the outer periphery of the suction port during intake processing, making it difficult to close the suction port. When the air valve is not properly aligned with the exhaust hole of the air valve, a problem arises in which the intake effect is reduced. Thus, there is still room for structural improvement in conventional air valves.

The present invention has been made to solve the above-mentioned problem, and even when suctioning a compression bag using a suction device equipped with various suction ports, the air inside the compression bag cannot be properly evacuated. The object of the present invention is to provide a valve device for use in a compressible bag.

One aspect of the present invention is a valve device used in a compression bag including a bag body, the base body having a first ventilation hole attached to a through hole of the bag body and communicating between the inside and outside of the bag body; The valve body includes a valve body that opens and closes the first vent hole, and a frame body that attaches the valve body to the base body at a peripheral portion thereof, and the valve body includes a valve body that opens and closes the first vent hole, and a frame body that attaches the valve body to the base body at its peripheral edge. and a valve surrounding part located around the base body, at least a portion of which is spaced apart from the base body, and the valve surrounding part communicates with the first vent hole when the valve part is in an open state. The valve device has a second ventilation hole, and has flexibility such that the part arranged apart from the base body is elastically deformed by a pressing force toward the base body.

According to this valve device, the valve device includes the base body, the valve body, and the frame body, the valve body including the valve portion and the valve surrounding portion, and the valve surrounding portion being in the open state. Since the second ventilation hole communicates with the first ventilation hole when the valve is in position, the suction port of a suction device such as a household vacuum cleaner is brought into contact with the valve surrounding part and suction is carried out through the second ventilation hole. At this time, the air inside the compression bag can be properly vented by opening the valve portion. Moreover, since the valve surrounding part is located around the valve part, by appropriately setting the size and shape of the valve surrounding part, various suction ports having different shapes and sizes can be installed in the valve surrounding part. It can be brought into contact with the Furthermore, the valve surrounding portion is arranged such that at least a portion thereof is spaced apart from the base body, and is a flexible structure that elastically deforms the part spaced apart from the base body by a pressing force directed toward the base body. Therefore, even if the suction port is provided with a protrusion along its axial direction, by aligning the protrusion with a part of the valve surrounding part that is spaced apart from the base body, the A portion thereof is elastically deformed by the pressure of the protrusion, and can absorb the protrusion length of the protrusion. Thereby, the suction port, in which the protrusion is provided along the axial direction, can be appropriately brought into contact with the valve surrounding portion. That is, according to the present invention, the air inside the compression bag can be appropriately evacuated from various suction ports having different shapes and sizes.

More specifically, when the compression bag is subjected to suction processing to remove air from inside thereof, the suction port is brought into contact with the valve surrounding portion. Since the valve surrounding part has a predetermined flexibility, the valve surrounding part deforms toward the base body due to the pressing force when the suction port comes into contact with the valve surrounding part, and as a result, the valve surrounding part deforms toward the base body. Adapt to the shape of. Therefore, even if a suction device is used that has not only a cylindrical suction port but also a rectangular cylindrical suction port, a protrusion along the axial direction, or a notch, the valve surrounding portion will be compressed by its own compression. and can be adapted to the suction port by deformation. Thereby, the valve surrounding portion and the suction port can be brought into close contact with each other. Moreover, the size of the valve surrounding part can be made considerably larger than the valve part, and can cover the suction ports provided in most suction devices including commercially available household vacuum cleaners. Therefore, this valve device can be applied to the suction ports provided in most of the suction devices.

In the valve device, it is preferable that the valve portion has a platform shape that projects further toward the base body than the valve surrounding portion. With this configuration, since the valve part protrudes from the valve surrounding part toward the base body, the distance from the first ventilation hole formed in the base body is shortened or eliminated, and the valve part The first ventilation hole can be more reliably blocked by the above.

In the valve device, only one second vent hole may be provided, but it is preferable to provide a plurality of second vent holes, such as five. In the case where a plurality of the second vent holes are provided, if at least a portion of the second vent holes is covered together with the valve portion by a suction port provided in a suction device such as a household vacuum cleaner, the arrangement mode of the second vent holes may be adjusted. Not particularly limited. However, in plan view, these second ventilation holes are preferably distributed around the first ventilation hole (specifically, the valve portion). With this distribution, during intake processing, suction can be properly performed through any of the second vent holes arranged around the first vent hole using various suction ports of different shapes and sizes. can do.

In the valve device, it is preferable that at least one first protrusion is provided on the valve surrounding portion so as to protrude toward a side opposite to the base body side. When the first protrusion presses the first protrusion with a suction port provided in a suction device such as a household vacuum cleaner, the first protrusion fills a gap caused by the height of the first protrusion with the suction port. and the valve surrounding portion. In other words, the first protrusion is for reducing the load on the suction device by taking in outside air through this gap when performing air intake processing. It is preferable that the first protrusion extends from the inside to the outside of the valve surrounding part and is disposed offset from the first vent hole in plan view. With this configuration, the first protrusion extends from the inside to the outside of the valve surrounding part at a position shifted from the first ventilation hole (specifically, the valve part) in plan view. Therefore, the suction ports having different shapes and sizes can be appropriately brought into contact with the first protrusion while covering the valve portion. As a result, the burden on various suction devices equipped with suction ports of different shapes and sizes can be effectively reduced.

In the valve device, it is preferable that a first boss is provided at a location of the base body corresponding to the first protrusion so as to protrude toward the valve surrounding portion. With this configuration, the first boss is provided on the base at a location corresponding to the first protrusion, so that the first protrusion is pushed into the base by the pressure of the suction port. Even in this case, the first protrusion is supported by the first boss. Thereby, it is possible to suppress a decrease in the support strength of the valve surrounding portion when the valve surrounding portion is excessively deformed, and it is also possible to prevent a decrease in intake efficiency in the latter half of the intake process.

In the valve device, it is preferable that a second protrusion is provided on a side opposite to the valve part with respect to the second vent hole in the valve surrounding part so as to protrude toward a side opposite to the base body side. . The second protrusion has an arc shape with the center of the valve enclosure as its center, and the second boss corresponding to the second protrusion protrudes toward the valve enclosure. Preferably, it is provided on the base. With this configuration, when the suction port is provided with a notch along its axial direction, by inserting the second protrusion into the notch, intake of outside air through the notch is suppressed. This can improve the efficiency of suction by the suction device. In addition, since the second boss is provided on the base body in a state of protruding toward the valve surrounding portion in correspondence with the second protrusion, the second protrusion is moved by the pressure of the suction port. Even when the second protrusion is pushed into the notch, the second protrusion is supported by the second boss. Thereby, it is possible to suppress a decrease in the support strength of the valve surrounding portion when the valve surrounding portion is excessively deformed, and the function of the second protrusion can be more appropriately exhibited.

In the valve device, a valve enclosing part supporting annular projection protruding toward the valve enclosing part is provided on the base body, and the valve enclosing part supporting annular projection is located below the valve enclosing part. preferable. With this configuration, when the suction port presses the valve surrounding portion, the valve surrounding portion is supported from below by the valve surrounding portion supporting annular projection, and the gap between the valve surrounding portion and the base body is By ensuring a predetermined distance between the two valves, it is possible to appropriately secure a space for allowing deformation of the valve surrounding portion.

The valve device further includes an upper lid, and the frame body is provided with an annular projection for engaging the upper lid that protrudes in a direction away from the valve surrounding portion, and the upper lid is movably connected to the frame body. and the upper lid is engageable with the upper lid engaging annular projection, and the upper lid is protruded to a portion of the upper lid corresponding to the first ventilation hole, and the upper lid is engaged with the upper lid engaging annular projection. It is preferable that a pressing part for pressing the valve part is provided. With this configuration, when the upper surface of the frame body is closed with the upper lid, that is, when the upper lid is engaged with the upper lid engaging annular projection, the pressing portion pushes the valve portion into the first passage. Press against the pores. Thereby, the first vent hole can be more reliably closed by the valve portion.

In the valve device, it is preferable that a first annular protrusion protruding toward the valve portion be provided on the base body surrounding a location where the first vent hole is installed.

In the valve device, the base body is connected to the inner wall of the bag body, and the base body is provided with a third annular protrusion and a fourth annular protrusion that protrude toward the valve surrounding part. A fifth annular protrusion projecting toward the valve is provided on the valve surrounding portion, the fifth annular protrusion is inserted between the third annular protrusion and the fourth annular protrusion, and the fifth annular protrusion is inserted between the frame body and the fourth annular protrusion. Preferably, the base body connects and presses the valve surrounding part.

In the valve device, the frame body has an annular shape, a sixth annular protrusion that protrudes toward the base body is provided on an outer peripheral edge of the frame body, and a seventh annular protrusion that protrudes toward the base body. is provided on the center side of the frame, and when the seventh annular protrusion and the fourth annular protrusion come into close contact with each other, it is preferable that the inner part of the seventh annular protrusion presses the valve surrounding part.

In the valve device, it is preferable that the third annular protrusion is provided with a positioning part, the valve surrounding part is provided with a positioning block, and the positioning block is fitted into the positioning part.

In the valve device, it is preferable that the pressing portion is installed as a ninth annular projection.

As described above, the present invention provides a compression bag that can appropriately remove air from inside the compression bag even when suctioning the compression bag using suction equipment equipped with various suction ports. A valve device for use is provided.

FIG. 1 is a perspective view of a valve device according to a first embodiment of the present invention. FIG. 2 is a perspective view of the valve device according to the first embodiment of the present invention with the top cover opened. FIG. 1 is a longitudinal sectional view of a valve device according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of the valve device according to the first embodiment of the present invention, viewed from above. FIG. 1 is an exploded perspective view of the valve device according to the first embodiment of the present invention, viewed from below. FIG. 2 is a plan view of the compression bag in which the valve device according to the first embodiment of the present invention is attached to the bag body, with the top lid open. FIG. 2 is a plan view of the compression bag in which the valve device according to the first embodiment of the present invention is attached to the bag body, with the top lid closed. FIG. 7 is a plan view of a compression bag in which a valve device according to a second embodiment of the present invention is attached to a bag body, with the top lid open. 9 is a partially enlarged sectional view taken along line AA in FIG. 8. FIG. It is a perspective view of the valve device concerning a 2nd embodiment of the present invention. FIG. 7 is a perspective view of the valve device according to the second embodiment of the present invention with the top cover opened. It is a longitudinal cross-sectional view of the valve device concerning a 2nd embodiment of the present invention. It is an exploded perspective view when a valve device concerning a 2nd embodiment of the present invention is seen from the upper side. It is an exploded perspective view when a valve device concerning a 2nd embodiment of the present invention is seen from the lower side. FIG. 7 is a schematic diagram showing the positional relationship between the valve body and the suction port when the valve body included in the valve device according to the second embodiment of the present invention is pressed by each of four types of suction ports.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

A preferred embodiment of the invention is shown in the figures. The role of the drawings is to make it possible to visually and figuratively understand each technical feature and technical solution of the present invention as a whole by supplementing the text portion of the specification with figures. It should not be understood that the technical scope is limited.

In the description of the present invention, the directions or positional relationships indicated by azimuths such as top, bottom, front, back, left, right, etc. are based on the azimuths or positional relationships shown in the drawings, and are based on the directions or positional relationships shown in the drawings. This is only for convenience and simplification of description, and does not explicitly or imply that the target device or component has a particular orientation or must be constructed and operated in a particular orientation. It should be understood that Therefore, it should not be construed as limiting the invention.

In the description of the present invention, "some" means one or more, and "plurality" means two or more. Also, it should be understood that "greater than", "less than", "exceeding", etc. do not include the reference value; ” etc. should be understood to include reference values. Furthermore, when "first" and "second" are written, these are merely used for the purpose of distinguishing technical features, and are not used to express or imply relative importance, or to indicate. It should not be understood as implying the number of technical features or as implying the precedence of the indicated technical features.

In the description of the present invention, unless clearly specified otherwise, words such as "install", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art will be able to understand the specifics of the technical solution. It is possible to reasonably specify the specific meanings of these words and phrases in the present invention by linking their contents.

(1) First Embodiment FIG. 1 is a perspective view of a valve device 100 according to a first embodiment of the present invention. FIG. 2 is a perspective view of the valve device 100 when the top cover 5 is opened. FIG. 3 is a longitudinal sectional view of the valve device 100. FIG. 4 is an exploded perspective view of the valve device 100 viewed from above. FIG. 5 is an exploded perspective view of the valve device 100 viewed from below. FIG. 6 is a plan view of the compression bag 6 in which the valve device 100 is attached to the bag body 61, with the top lid 5 open. FIG. 7 is a plan view of the compression bag 6 in which the valve device 100 is attached to the bag body 61, with the top lid 5 closed.

The valve device 100 according to the first embodiment is used for an air intake process to remove air from the inside of the compression bag 6 attached to the bag body 61.

As shown in FIGS. 1 to 7, the valve device 100 is a valve device used for a compression bag 6 equipped with a bag body 61, and is attached to a through hole 62 of the bag body 61, and is attached to the inside and outside of the bag body 61. It includes a base body 1 having a communicating first vent hole 2, a valve body 3 that opens and closes the first vent hole 2, and a frame body 15 that attaches the valve body 3 to the base body 1 at its peripheral edge. The valve body 3 includes a valve part 8 that opens and closes the first vent hole 2, and a valve surrounding part 14 that is located around the valve part 8 and is arranged so that at least a portion thereof is spaced apart from the base body 1. The valve surrounding part 14 has a second vent hole 4 that communicates with the first vent hole 2 when the valve part 8 is in the open state, and the part disposed apart from the base body 1 is connected to the base body 1. It has the flexibility to undergo elastic deformation due to the pressing force toward the side.

In this embodiment, the valve surrounding portion 14 may be partially formed of a soft material, or may be formed entirely of a soft material. Further, five second ventilation holes 4 are provided in the valve surrounding part 14, and the second ventilation holes 4 are arranged at positions shifted from the first ventilation holes 2 (specifically, the valve part 8) in plan view. The five second ventilation holes 4 are uniformly distributed around the valve part 8 in close proximity to the valve part 8. When performing suction processing on the inside of the compression bag, the suction port (specifically, the nozzle tip portion having the suction port) is brought into contact with the valve surrounding portion 14 . Since the valve surrounding part 14 has a predetermined flexibility, the valve surrounding part 14 deforms toward the base body 1 by the pressing force when the suction port comes into contact with it, and as a result, it adapts to the shape of the suction port. Therefore, even if the size of the suction port is different from conventional ones or the suction port is provided with a protrusion or notch along its axial direction, the valve surrounding portion 14 of this embodiment has its own structure. It can be adapted to the suction port by compression and deformation. Thereby, the valve surrounding portion 14 and the suction port can be brought into close contact with each other. In this embodiment, during the intake process, the valve surrounding part 14 located inside the suction port in plan view deforms toward the suction port due to the action of the negative pressure generated by the intake air, and as a result, the valve part 8 deforms toward the suction port. The first ventilation hole 2 is no longer blocked. At this time, the air in the compression bag 6 enters the suction port via the first vent hole 2 and the second vent hole 4. Then, when the intake of air is completed and the intake of air by the suction device is stopped, the valve portion 8 is adsorbed until it covers the first ventilation hole 2, thereby exerting a blocking effect on the first ventilation hole 2.

In this embodiment, it is preferred that the size of the valve surrounding part 14 is considerably larger than the valve part 8. This makes it possible to cover the suction ports included in most suction devices such as commercially available household vacuum cleaners, and as a result, the valve device 100 of this embodiment can be used to cover the suction ports provided in most suction devices. It can be applied to intake air treatment.

Although the number of second ventilation holes 4 in this embodiment is five, in other embodiments, the number of second ventilation holes 4 may be one, two, three, or other numbers. . Further, the distribution of the second vent holes 4 in this embodiment is uniform around the first vent hole 2 (specifically, around the valve part 8) in plan view, but when distributed like this, Without limitation, two or more second ventilation holes 4 may be distributed non-uniformly around the first ventilation hole 2, for example, in a densely packed state.

As shown in FIGS. 3 and 4, in this embodiment, a first annular protrusion 7 that protrudes toward the valve portion 8 is provided on the base body 1 surrounding the location where the first ventilation hole 2 is installed. By forming the first annular protrusion 7, the distance between the base body 1 and the valve part 8 near the first vent hole 2 can be shortened, and the sealing stability of the first vent hole 2 can be improved after the intake process is completed. improve.

In this embodiment, in order to further improve the stability of the sealing of the first vent hole 2 after the intake process is completed, a portion of the lower end surface of the valve portion 8 corresponding to the first vent hole is directed toward the base body 1. A projecting stand 28 is provided. The protruding base 28 corresponds to a "table" in the present invention. By installing the protruding base 28 in this manner, the valve part 8 and the first annular protrusion 7 are attracted to each other even if the valve part 8 is slightly deformed, and no large internal stress exists inside the valve part 8. As a result, the inflow of outside air is slowed down, and the negative pressure state inside the compression bag 6 can be stably maintained. Further, a concave portion 29 is provided at a location corresponding to the protruding base 28 on the upper end surface of the valve portion 8 . Thereby, the resistance when the valve portion 8 deforms toward the base body 1 can be further reduced, and the stability of sealing the first vent hole 2 can be further improved.

As shown in FIG. 4, in this embodiment, four first protrusions 9 are provided on the valve surrounding portion 14 so as to protrude toward the side opposite to the base 1 side, and the first protrusions 9 are provided on the valve surrounding portion 14. Extending from the inside to the outside of the portion 14, spaced apart from the second ventilation hole 4 in the circumferential direction, and at a position shifted from the first ventilation hole 2 (specifically, the valve portion 8) in plan view. It is provided. In a case where a suction device such as a household vacuum cleaner can generate a relatively large negative pressure, if a configuration is adopted in which only the air inside the compression bag 6 can be sucked from the second vent hole 4, the suction device can There is a risk that the suction device will be overloaded and cause it to malfunction. In contrast, in this embodiment, by providing the first protrusion 9, a slight gap is formed between the suction port and the valve surrounding portion 14. Thereby, the suction port can be replenished with outside air from the gap, the load on the suction device is reduced, and normal operation of the suction device is ensured. On the other hand, when the size of the suction port is relatively small, the plurality of second vent holes 4 cannot be entirely covered by the suction port, so outside air is replenished through the second vent holes 4 that are not covered by the suction port. . As a result, the load on the suction device is reduced and normal operation of the suction device is ensured.

As shown in FIG. 4, in this embodiment, a second annular protrusion 10 that protrudes toward the valve surrounding part 14 is provided on the base body 1, and the second annular protrusion 10 is located below the valve surrounding part 14. . The second annular projection 10 corresponds to the "valve surrounding part supporting annular projection" in the present invention. The second annular projection 10 is provided primarily to support the valve surrounding portion 14. By providing the second annular projection 10, a predetermined distance is maintained between the valve surrounding portion 14 and the base body 1, a predetermined space for deforming the valve surrounding portion 14 is secured, and the cross section has an irregular shape. connection with the suction port provided.

As shown in FIG. 4, in this embodiment, a first boss 11 is provided at a location corresponding to the first protrusion 9 on the base 1 so as to protrude toward the valve surrounding portion 14 side. The first protrusion 9 and the first boss 11 are located inside the second annular protrusion 10 in plan view, and are relatively close to each other at a position apart from the first ventilation hole 2. When the valve body 3 is pressed by the suction port, the suction port comes into contact with the first protrusion 9, and the valve surrounding portion 14 can deform downward and come into contact with the first boss 11. This can prevent excessive deformation of the valve surrounding portion 14 and a decrease in structural strength, as well as a decrease in intake efficiency in the latter half of the intake process.

As shown in FIG. 4, in this embodiment, the second protrusion 12 is provided in the valve surrounding part 14 in a state that protrudes toward the side opposite to the base 1 side, and the second protrusion 12 is provided in the valve surrounding part 14. The second boss 13 corresponding to the second protrusion 12 is provided on the base body 1 in a state of protruding toward the valve surrounding portion 14 side. The reason why the second protrusion 12 is provided on the valve surrounding portion 14 is mainly to cope with the case where a notch is provided in the suction port. The second protrusion 12 can come into contact with the notch, thereby reducing the area where outside air is taken in through the notch (that is, the opening area of the notch). For example, when a notch is provided along the axial direction of the suction port of some manufacturers' household vacuum cleaners, by providing the second protrusion 12 on the valve surrounding portion 14, the second protrusion 12 is provided. The two protrusions 12 make good contact with the notch to improve intake efficiency. On the other hand, the second boss 13 can prevent the structural strength from decreasing due to excessive deformation of the valve surrounding portion 14. Since the second boss 13 has a longer length in the radial direction of the valve surrounding part 14 than the second protrusion 12, even if the second protrusion 12 moves slightly due to deformation of the valve surrounding part 14, the second boss 13 without departing from the range supported by 13.

In this embodiment, the base body 1 is connected to the inner wall of the bag body 61, and the third annular protrusion 16 and the fourth annular protrusion 17 that protrude toward the valve surrounding part 14 are provided on the outer peripheral side of the base body 1. A fifth annular protrusion 18 protruding toward the base body 1 is provided on the outer periphery of the valve surrounding portion 14, and the fifth annular protrusion 18 is inserted between the third annular protrusion 16 and the fourth annular protrusion 17. The frame body 15 presses against the valve surrounding part 14 by being connected to the base body 1. The third annular projection 16 and the fourth annular projection 17 sandwich the fifth annular projection 18, and the third annular projection 16 supports the valve surrounding part 14, so that the valve surrounding part 14 is in a suspended state. Thus, the purpose of forming a space between the valve surrounding portion 14 and the base body 1 is achieved. The structure is simple and clever, and the manufacturing is simple and easy. On the other hand, since the fifth annular projection 18, the third annular projection 16, and the fourth annular projection 17 are tightly fitted, a sealed connection can be formed between these three. The upper surface of the base body 1 that is located on the outer periphery of the fourth annular protrusion 17 (that is, the upper surface on the outer periphery side) is provided with several protruding ribs (not shown) to facilitate welding with the bag body 61. Become. In other embodiments, depending on the actual situation, the base body 1 may be attached to the outer wall of the bag body 61, in which case the bottom of the base body 1 is welded to the bag body 61.

As shown in FIGS. 3 to 5, in this embodiment, the frame 15 has an annular shape, and a sixth annular protrusion 19 that projects toward the base 1 is provided on the outer peripheral edge of the frame 15. A seventh annular protrusion 20 protruding toward the base 1 is provided closer to the center of the frame 15 than the outer periphery thereof. Although the seventh annular projection 20 and the fourth annular projection 17 are in close contact with each other, in this embodiment, an engagement structure is employed between them for positioning. The inner peripheral side portion of the seventh annular projection 20 of the frame body 15 presses against the valve surrounding part 14. In other embodiments, the frame 15 may be connected to the outer wall of the bag 61, for example by welding. Furthermore, in other embodiments, the seventh annular projection 20 and the fourth annular projection 17 may be fixed by welding or the like as necessary. In this embodiment, after the frame body 15 is attached, the frame body 15 prevents the fifth annular protrusion 18 of the valve surrounding part 14 from sliding out from between the third annular protrusion 16 and the fourth annular protrusion 17. This allows the valve surrounding portion 14 to be mounted and fixed.

As shown in FIGS. 3 to 5, in this embodiment, a first boss 11 and a second boss 13 are provided on the base body 1. In order to prevent positional displacement caused by rotation of the valve surrounding part 14 and the base body 1, a positioning part 21 is provided on the third annular protrusion 16, a positioning block 22 is provided on the valve surrounding part 14, and the positioning block 22 is fitted into the positioning part 21. Thereby, after the valve surrounding part 14 is attached, the movement of the positioning block 22 is restricted within the positioning part 21, and the valve surrounding part 14 does not rotate relative to the base body 1. In other embodiments, the positioning part 21 may be anything that can restrict the movement of the positioning block 22, such as a notch or a groove provided in the third annular projection 16.

As shown in FIGS. 3 and 4, in this embodiment, the frame body 15 is provided with an eighth annular projection 23 that protrudes in a direction away from the valve surrounding portion 14, and the upper lid 5 is attached to the frame body 15. The upper lid 5 is movably connected to the eighth annular protrusion 23, and the upper lid 5 is connected to the frame 15 via a flexible material. A protruding pressing portion 27 is provided at a location corresponding to the air hole 2, and the upper lid 5 can be turned over until it connects with the eighth annular projection 23. The eighth annular projection 23 corresponds to the "upper lid engagement annular projection" in the present invention. After the upper lid 5 is reversed and the frame body 15 is closed, the pressing portion 27 presses the valve portion 8 toward the first annular projection 7, thereby ensuring close contact between the valve portion 8 and the first annular projection 7. As a result, outside air is prevented from flowing into the compression bag 6 from the gap between the valve portion 8 and the first annular projection 7 through the first ventilation hole 2 . The pressing part 27 is preferably installed as a ninth annular protrusion, and by making the diameter of the ninth annular protrusion approximately the same as the diameter of the first annular protrusion 7, the upper lid 5 is engaged with the eighth annular protrusion 23. In this state, a good adhesion effect can be obtained between the valve portion 8 and the first annular projection 7.

In other embodiments, the top lid 5 may be connected to the frame 15 in other ways, for example, the top lid 5 may be connected to the frame 15 in a screw connection manner. The pressing portion 27 may be a solid body instead of the hollow body employed in this embodiment.

In this embodiment, when the base body 1 is attached to the inner wall of the bag body 61, several protruding ribs are provided at the bottom of the base body 1, as shown in FIG. The ribs include long ribs 24, middle ribs 25, and short ribs 26. The ribs are distributed radially from the center of the base 1 such that if the ribs are stretched, they reach the center of the base 1. One medium rib 25 and two short ribs 26 are arranged between two adjacent long ribs 24, and one medium rib 25 is surrounded by two adjacent long ribs 24 and the outer peripheral edge of the base 1. Located on the center line of the space, the two short ribs 26 are located on both sides of the middle rib 25, respectively. By providing the ribs, it is possible to prevent the problem that objects inside the compression bag 6 block the first ventilation hole 2 during the intake process and the degree of vacuum in the compression bag 6 does not decrease to a predetermined degree of vacuum.

Further, in this embodiment, the first ventilation hole 2 has a circular shape, but the shape is not limited to this, and a polygonal shape such as a triangular or quadrangular shape or another shape may be adopted as appropriate. In this case, the valve portion 8 and the pressing portion 27 may have a shape corresponding to the first vent hole 2 .

Further, in the present embodiment, the first protrusion 9 extends from the inside of the valve surrounding portion 14 toward the outside, but instead of this, it may extend from the outside of the valve surrounding portion 14 toward the inside. Alternatively, it may be stretched along the circumferential direction.

Further, in the present embodiment, the second protrusion 12 has an arc shape with the center of the valve surrounding portion 14 as its center, but instead of this, it may have a circular shape, a rectangular shape, a polygonal shape, etc. good.

Furthermore, in this embodiment, the shape of the second vent hole 4 is made up of only one type of hole, but the air flowing in from the first vent hole 2 during the intake process is Any material may be used as long as it ensures air permeability to the suction port provided in the suction device. Other shapes of the second vent hole 4 include, for example, one in which a portion of the valve surrounding portion 14 is mesh-like, and one in which the valve surrounding portion 14 has a notch.

Further, in the present embodiment, the second vent holes 4 are arranged at equal distances from the first vent hole 2 (specifically, the valve portion 8) in plan view; However, the distance from at least one of the second vent holes 4 from the valve section 8 may be different from the distance from the valve section 8 of the remaining second vent holes 4, or, A plurality of second ventilation holes 4 may be arranged along the direction from the valve portion 8 toward the outer peripheral edge of the valve body 3.

Further, in the present embodiment, the frame body 15 has an annular shape, but instead of this, it may be an annular body whose cross section is a polygon such as a triangle or a quadrangle, or an ellipse. In this case, the base body and the valve body may have shapes corresponding to the frame body.

Further, in the present embodiment, the pressing portion 27 has a cylindrical shape, but instead of this, it may be a cylindrical body with a polygonal cross section such as a triangle or a quadrangle, or a circular or polygonal cross section. It may be a columnar body such as. The hardness of the pressing portion 27 may be the same as that of the first annular projection 7, or may be different.

(2) Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. 8 to 15. Hereinafter, the basic configurations of the valve device 200 according to the second embodiment and the compression bag 206 equipped with the valve device 200 will be summarized, although there are some overlaps, and the valve device 100 according to the first embodiment I will focus on explaining the differences. Note that the same components as in the first embodiment are given the same reference numerals, and detailed explanation thereof will be omitted.

[Compression bag]
FIG. 8 is a plan view of the compression bag 206 in which the valve device 200 according to the second embodiment of the present invention is attached to the bag body 61, with the top lid 205 open. FIG. 9 is a partially enlarged sectional view taken along line AA in FIG.

In the compression bag 206, the valve device 200 is attached to the bag body 61, similar to the compression bag 6 in the first embodiment. In other words, the compression bag 206 includes a bag body 61 that stores bedding, clothing, etc., and a valve device 200 attached to the bag body 61.

The bag body 61 is an airtight bag that is formed in a size that can store folded bedding, clothing, etc., and is open on one side. The bag 61 is, for example, a combination of two rectangular sheets made of a multilayer film laminated with a biaxially stretched nylon film that is impermeable to gas and a linear low-density polyethylene film. The bag body 61 is formed into a bag shape by welding three sides of the four sides, excluding one side that will become the storage opening 63. A line-shaped airtight member 64 is welded to one side of the bag body 61, which serves as the storage opening 63, for airtightly fitting the male and female parts. The bag 61 has a through hole 62 that communicates between the inside and outside of the bag 61 . The airtight member 64 is fitted or unfitted by hand or using a slider (not shown).

[Valve device]
FIG. 10 is a perspective view of the valve device 200. FIG. 11 is a perspective view of the valve device 200 when the top cover 205 is opened. FIG. 12 is a longitudinal sectional view of the valve device 200. FIG. 13 is an exploded perspective view of the valve device 200 viewed from above. FIG. 14 is an exploded perspective view of the valve device 200 viewed from below.

The valve device 200 is used for air intake processing to remove air from inside the compression bag 206.

As shown in FIGS. 8 to 14, like the valve device 100 according to the first embodiment, the valve device 200 includes a base body 201 that is attached to a through hole 62 of a bag body 61, and a base body 201 that opens and closes the first ventilation hole 2. The valve body 203 is provided with a frame body 215 for attaching the valve body 203 to the base body 201 via the peripheral edge of the valve body 203, and an upper lid 205 hinged to the frame body 215. The valve device 200 differs from the valve device 100 according to the first embodiment in the specific structures of the base body 201, the valve body 203, and the frame body 215.

[Base]
Similar to the base body 1 in the first embodiment, the base body 201 is disposed on the inner wall of the bag body 61 and sandwiches the bag body 61 between the frame body 215 and the peripheral edge of the valve body 203 and the through hole 62. It is. The base body 201 includes a circular plate-shaped base body 40 having a first ventilation hole 2 in the center, and a side where the base body 40 contacts the inner wall of the bag body 61 around the first ventilation hole 2 (one side of the base body 40). a first annular protrusion 207 protruding toward the side), and a second annular protrusion 207 protruding toward the one side of the base body 40 concentrically with the first annular protrusion 207 on the radially outer side of the first annular protrusion 207 in the base body 40. an annular protrusion 10, and third and fourth third and fourth annular protrusions radially outward of the second annular protrusion 10 in the base body 40, concentrically with the second annular protrusion 10, and protruding toward the one side of the base body 40 at predetermined intervals, respectively. A plurality of ventilation spacers 211 are arranged concentrically with the first annular protrusion 207 between the annular protrusions 16 and 17 and the first and second annular protrusions 207 and 10 on the base body 40; The second boss 13 provided on the outer edge of the base body 40 between the protrusions 207 and 10 and the lower side of the first ventilation hole 2 on the lower surface side of the base body 40 (the side not in contact with the inner wall of the bag body 61) A cylindrical ventilation boss 32 disposed on the outside of the other side of the base body 40 and a surface of the lower surface side of the base body 40 (the other side of the base body 40) radially around the ventilation boss 32. It is provided with a plurality of ribs 24 to 26 protruding from a certain lower surface to the lower surface side of the base body 40, and is integrally molded from synthetic resin. The base body 201 of the second embodiment has a first annular protrusion 207 set higher than the first annular protrusion 7 of the first embodiment, and has ventilation instead of the plurality of first bosses 11 of the first embodiment. This differs from the base 1 of the first embodiment in that a spacer 211 is provided.

The base body 40 is arranged on the inner wall of the bag body 61. The base body 40 has a disk shape with a circular first ventilation hole 2 passing through the center. The base body 40 is joined to the bag body 61 around the through hole 62 at the outer peripheral edge of the one side surface of the base body 40 (more specifically, the upper surface located on the outer periphery of the fourth annular protrusion 17). (specifically, by welding), whereby the inside and outside of the compression bag 206 are communicated through the first ventilation hole 2 . In the second embodiment as well, the first ventilation hole 2 has a circular shape as in the first embodiment, but it is not limited to this shape, and may have a polygonal shape such as a triangle or a quadrangle, or other shapes as appropriate. May be adopted. Then, as the shape of the valve portion 8 and the pressing portion 27, a shape corresponding to the first ventilation hole 2 may be adopted.

The first annular protrusion 207 functions as a valve seat of the valve body 203 similarly to the first embodiment. The first annular protrusion 207 is formed in a cylindrical shape and stands around the first ventilation hole 2 of the base body 40 . In this way, by erecting the first annular protrusion 207 on the base body 40, the distance between the base body 201 and the valve body 203 near the first ventilation hole 2 can be shortened, and the first annular protrusion 207 can Improves the stability of sealing the pores 2. In particular, as shown in FIG. 12, the first annular protrusion 207 of the second embodiment is formed higher than the first annular protrusion 7 of the first embodiment, and the distal end surface of the first annular protrusion 207 is formed so that negative pressure acts inside the compression bag 206. The dimensions are set so as to come into contact with the lower surface of the valve body 203 (specifically, the valve portion 8) even when the valve body 203 is not in use. This further increases the adhesion between the first annular protrusion 207 and the valve portion 8, and further improves the sealing performance after the air intake process. In this embodiment, the inner peripheral edge of the distal end surface of the first annular protrusion 207 is formed into a plane substantially parallel to the valve body 203, and the inner peripheral edge is slightly wider than the outer peripheral edge. It is configured as a lip portion that protrudes from the top.

The second annular projection 10 is formed similarly to the first embodiment. That is, the second annular protrusion 10 is provided concentrically with the first annular protrusion 207 so as to protrude from the base body 40 in the same direction as the first annular protrusion 207 (the one side of the base body 40). . The amount of protrusion of the distal end surface of the second annular projection 10 is adjusted so as to come into contact with the lower surface of the valve surrounding part 214, thereby supporting the valve surrounding part 214 from below. Specifically, the second annular protrusion 10 is configured as a surrounding wall that surrounds the entire circumference of the first annular protrusion 207, and supports the radially intermediate portion of the valve enclosing portion 214 in its plan view. The diameter is dimensioned. Specifically, the diameter of the second annular protrusion 10 is preferably set to be half or more of the outer diameter of the valve surrounding portion 214, and is preferably set in a range of 60% to 80%. More preferred.

The third annular projection 16 and the fourth annular projection 17 protrude from the base body 40 toward the one side of the base body 40, and cooperate with each other to attach the valve body 203 while being positioned in the circumferential direction. Specifically, the valve body 203 is attached by fitting the fifth annular protrusion 18 of the valve body 203 between the third and fourth annular protrusions 16 and 17.

That is, the third annular projection 16 and the fourth annular projection 17 are provided on the valve body 203 with the valve surrounding portion 214 spaced apart from the upper surface of the base body 40 (the surface on one side of the base body 40). Therefore, the protruding heights of the third and fourth annular protrusions 16 and 17 correspond to the distance between the base body 40 and the valve surrounding portion 214. The height of the third and fourth annular protrusions 16 and 17 from the base body 40 is preferably set in a range of 3 mm to 10 mm. If the third and fourth annular protrusions 16 and 17 are too low, the distance between the base body 201 and the valve surrounding part 214 will become small, and for example, the suction port provided with the protrusion protruding along the axial direction will be When pressed, the valve surrounding portion 214 cannot sufficiently absorb the protrusion, resulting in poor adhesion with the suction port. On the other hand, if the third and fourth annular protrusions 16 and 17 are too high, the tension acting on the valve body 203 when the suction port is pressed against the valve body 203 becomes too large, causing the suction port to be pressed against the valve body 203. There is a risk that the operability and the durability of the valve body 203 may deteriorate.

The fourth annular protrusion 17 has substantially the same outer diameter as the valve body 203, and the third annular protrusion 16 has an outer diameter slightly smaller than the valve body 203 in consideration of the thickness of the fifth annular protrusion 18. Further, a portion of the third annular projection 16 in the circumferential direction is cut out in the protruding direction, and the cutout portion constitutes the positioning portion 21 . In this embodiment, the positioning portion 21 is cut out to the same extent as the protrusion height of the third annular protrusion 16 . Therefore, the third annular projection 16 has a shape that is interrupted in the circumferential direction at the positioning portion 21 . On the other hand, the fourth annular protrusion 17 has a frame positioning part 33 that bulges outward in the radial direction at a position shifted by a predetermined angle (90 degrees in FIG. 13) with respect to the positioning part 21 in a plan view. The frame body 215 can be engaged with the base body 201 while being positioned by the frame body positioning portion 33.

The ventilation spacer 211 secures a space between the deformed valve surrounding portion 214 and the base body 40 when the compression bag 206 is inhaled using a suction device, and is provided between each of the second ventilation holes 4. This is to ensure breathability. Among the plurality of ventilation spacers 211, one specific ventilation spacer 211A also performs the same function as the first boss 11 of the first embodiment, that is, the function of supporting the first protrusion 209 described later. Specifically, the specific ventilation spacer 211A is provided at a position opposite to the positioning portion 21 of the third annular projection 16 and the second boss 13 with respect to the first annular projection 207. The specific ventilation spacer 211A is configured similarly to the other ventilation spacers 211, and therefore will be collectively described as the ventilation spacer 211 below.

The ventilation spacer 211 is configured such that the valve surrounding portion 214 of the valve body 203 comes into contact with and separates from the top surface. The ventilation spacer 211 is formed in the shape of an elongated rectangular parallelepiped in the radial direction of the base body 40 and protrudes from the upper surface of the base body 40 at a position closer to the first annular protrusion 207 than the second annular protrusion 10 in the radial direction. ing. The amount of protrusion (that is, the height) of the ventilation spacer 211 is set to be smaller than the second annular projection 10 and larger than the first annular projection 207 in order to support the deforming valve surrounding portion 214 and ensure a ventilation path. has been done. Since the amount of protrusion of the first protrusion 209 of the second embodiment, which will be described later, is smaller than the first protrusion 9 of the first embodiment, the amount of protrusion of the outer edge of the ventilation spacer 211 is equal to the amount of outside air taken in during the intake process. The protrusion amount is set to be larger than the first boss 11 of the first embodiment so as to compensate for the decrease. In order to prevent the top surface of the inner edge of the ventilation spacer 211 from interfering with the valve part 8, the top surface of the inner edge is formed as a tapered surface that slopes inward in the opposite direction to the protruding direction. There is. Further, the ventilation spacer 211 is recessed from the top surface toward the base body 40 to prevent meat leakage, and has a hollow shape. The ventilation spacer 211 may have a rectangular, trapezoidal, or other polygonal shape instead of an arcuate shape in plan view.

The ventilation spacers 211 are provided in accordance with the number of second ventilation holes 4. In this embodiment, a plurality of (five in FIG. 13) ventilation spacers 211 are provided, and are arranged at approximately equal intervals around the first annular protrusion 207 based on the specific ventilation spacer 211A. It is located between the two ventilation holes 4.

As described above, the second boss 13 is provided to protrude from the outer edge of the base body 40 between the first and second annular projections 207 and 10. The second boss 13 is similar to the first embodiment, and supports the second protrusion 12 of the valve body 203, and also has a function of positioning a suction port provided with a notch along the axial direction. It also has Specifically, the second boss 13 includes a boss main body 13a that is provided integrally with the second annular protrusion 10 and extends radially inward of the base body 40, and a boss main body 13a that is provided on the inner side of the boss main body 13a in the radial direction. The third annular projection 16 has a thin widened portion 13b widened in an arc shape along the circumferential direction thereof, and is arranged so that its center line in plan view coincides with the center line of the positioning portion 21 of the third annular projection 16.

The boss body 13a has an arcuate shape with the center of the base body 40 as its center in plan view, and the width in the circumferential direction is set according to the size of a general notch provided in the suction port. A portion thereof, together with the valve surrounding portion 214, is configured to be insertable into a notch provided along the axial direction. In this embodiment, the maximum circumferential width of the boss body 13a is set to be within 20 mm. Further, the thin widened portion 13b is arranged between the outer edges of a pair of ventilation spacers 211 adjacent to each other in the circumferential direction, and spaced apart from the pair of ventilation spacers 211. The outer circumferential surface of the thin widened portion 13b is formed so as to be engaged with the inner circumferential surface of the suction port with the notch of the suction port partially inserted into the boss body 13a. Positioning is performed with respect to a suction port provided with a notch along the side.

The lower surface side of the base body 40 (the other side of the base body 40) is configured similarly to the first embodiment. Specifically, the base body 40 includes a ventilation boss 32 on the lower surface side, a long rib 24 that supports the ventilation boss 32, a middle rib 25, and a short rib 26, and the compression bag 206 during the intake process. It has a function of preventing the first ventilation hole 2 from being blocked by objects inside the bag and preventing the base body 40 and the inner wall of the bag body 61 from coming into close contact with each other.

[Valve body]
Like the valve body 3 in the first embodiment, the valve body 203 is attached to the upper surface of the base body 201, opens and closes the first vent hole 2 of the base body 201, and has a sheet shape against which the suction port of the suction device is pressed. It is a member. The valve element 203 includes a valve part 8 that opens and closes the first ventilation hole 2, and a valve surrounding part 214 that is arranged around the valve part 8 with at least a portion separated from the base body 201, and is made of silicone rubber or the like. It is integrally molded into a circular sheet shape from soft synthetic resin.

The valve portion 8 is formed similarly to the first embodiment. That is, the valve portion 8 has a substantially circular shape in plan view that is larger than the first vent hole 2 at the center of the valve body 203 . The diameter of the valve portion 8 is preferably set within the range of 10 mm to 40 mm, taking into consideration the load on the suction device, suction efficiency, etc. The valve portion 8 is configured as a protrusion base 28 that protrudes downward (toward the base body 201 side), and is provided with a concave portion 29 that is concave downward from the upper surface thereof. The lower surface of the protruding base 28 , which is the valve portion 8 , is in contact with the first annular projection 207 . The amount of protrusion of the protrusion base 28 may be set as appropriate, and in this embodiment, it is adjusted to the thickness of the valve surrounding portion 214. By providing the protruding base 28 in this manner, the adhesiveness with the first annular protrusion 207 is increased, and the negative pressure state inside the compression bag 206 after the air intake process can be stably maintained. Moreover, since the concave portion 29 is provided, the valve portion 8 can be made thin despite the protruding base 28 being formed, and the operating condition of the valve portion 8 can be improved.

The valve surrounding part 214 includes an annular sheet body 214a having a plurality of second ventilation holes 4 (five in this embodiment) arranged at equal intervals in the circumferential direction close to the valve part 8, and an annular sheet body 214a. A fifth annular protrusion 18 having a positioning block 22 that protrudes concentrically with the annular sheet body 214a toward the base body 201 at the outer peripheral edge of the lower surface and is disposed outside a specific second ventilation hole 4A; A tenth annular protrusion 234 that protrudes concentrically with the fifth annular protrusion 18 toward the base body 201 inside the protrusion 18 and is fitted onto the second annular protrusion 10 of the base body 201, and an inner circumferential surface of the tenth annular protrusion 234. Eleventh annular protrusions 235 are scattered in the circumferential direction and sandwich the second annular protrusion 10 together with the tenth annular protrusions 234 in a state opposite to A single first protrusion 209 protrudes upward on the opposite side of the specific second vent hole 4A, and a single first protrusion 209 protrudes from the outside of the specific second vent hole 4A on the upper surface of the annular sheet body 214a. and the ventilation resistance tongue piece 236 disposed in the second ventilation hole 4 disposed on the opposite side of the second protrusion 12 with respect to the center of the annular sheet body 214a. As such, it has flexibility because it is integrally formed from a soft synthetic resin such as silicone rubber. The valve enclosing portion 214 is installed such that the outer peripheral edge of the valve body 203 is held between the base body 201 and the frame 215, so that an area inside the outer peripheral edge is spaced apart from the base body 40. , which elastically deforms in response to the pressing force or suction force from the suction port. The valve surrounding part 214 of the second embodiment has a specific configuration of the first protrusion 209, tenth and eleventh annular protrusions 234, 235, and an airflow resistance tongue piece 236 in the predetermined second ventilation hole 4. It differs from the valve surrounding part 14 of the first embodiment in that the valve surrounding part 14 is arranged.

The size of the valve surrounding part 214 may be appropriately set according to the shape and size of the axial tip of the suction port included in the suction device used for intake processing, but similarly to the valve surrounding part 14 of the first embodiment, Preferably, it is considerably larger than section 8. Specifically, the valve surrounding portion 214 having an annular shape is held between the base body 201 with the outer peripheral edge of the valve body 203 covered by the frame 215 as described above. It is preferable that the diameter of the portion exposed from the frame body 215 in plan view is set to 3 to 6 times that of the valve portion 8, and more specifically, the outer diameter of the exposed portion is set to 60 mm to 100 mm. It is preferable that

The annular sheet body 214a is an annular sheet disposed around the valve portion 8, and has a plurality of second ventilation holes 4 arranged at equal intervals in the circumferential direction on the inner peripheral edge. Specifically, five second ventilation holes 4 including the specific second ventilation hole 4A are provided at equal intervals in the circumferential direction while penetrating the annular sheet body 214a. Although the number of second ventilation holes 4 is not particularly limited, it is preferable to provide an odd number of them in consideration of the intake balance when using suction ports of various sizes and shapes. The second ventilation hole 4 is set such that the opening area on the inside in the radial direction of the annular sheet body 214a is larger than the opening area on the outside thereof, and in this embodiment, the second ventilation hole 4 has a teardrop shape along the circumferential direction of the annular sheet body 214a. It is showing. Note that the specific configuration, such as the number and shape of the second ventilation holes 4, can be set as appropriate. For example, in the present embodiment, the shape of the second vent hole 4 is made up of only one type of hole, but the air flowing in from the first vent hole 2 during the intake process is Any material may be used as long as it ensures air permeability to the suction port provided in the suction device. Other shapes of the second vent hole 4 include, for example, one in which a portion of the valve surrounding portion 214 is mesh-like, and one in which the valve surrounding portion 214 has a notch. Further, in the present embodiment, the second vent holes 4 are arranged at equal distances from the first vent hole 2 (specifically, the valve portion 8) in plan view; However, the distance from at least one of the second vent holes 4 from the valve section 8 may be different from the distance from the valve section 8 of the remaining second vent holes 4, or, A plurality of second ventilation holes 4 may be arranged along the direction from the valve portion 8 toward the outer peripheral edge of the valve body 203.

The fifth annular projection 18 is inserted between the third and fourth annular projections 16 and 17 of the base body 201 and attaches the valve body 203 to the base body 201. The fifth annular protrusion 18 is formed to protrude downward (toward the base body 201 side) at a position slightly recessed inward from the outer peripheral edge of the lower surface of the annular sheet body 214a. The fifth annular projection 18 includes a peripheral wall portion 18a that is continuously provided over the entire circumferential circumference of the annular sheet body 214a, and a positioning block 22 that protrudes radially inward from the peripheral wall portion 18a. have The protruding height of the peripheral wall portion 18a is set according to the protruding height of the third and fourth annular protrusions 16 and 17, and in this embodiment, it is set to be slightly lower than the third and fourth annular protrusions 16 and 17. is set to . The positioning block 22 is fitted into the positioning portion 21 of the base body 201 and positions the valve body 203 with respect to the base body 201. The width of the positioning block 22 in the circumferential direction is provided corresponding to the width of the positioning part 21, and is formed to be the same as or slightly smaller than the width of the positioning part 21. This prevents positional displacement caused by rotation of the valve surrounding portion 214 with respect to the base body 201.

The tenth and eleventh annular protrusions 234 and 235 are provided to suppress deformation of the valve surrounding portion 214 in the radial direction due to the suction port being pressed against the valve surrounding portion 214. The tenth and eleventh annular projections 234 and 235 are annularly provided inside the fifth annular projection 18 and outside the second ventilation hole 4 . In this embodiment, the tenth annular protrusion 234 is provided continuously in the circumferential direction. On the other hand, the eleventh annular projections 235 are provided so as to be scattered in the circumferential direction. Specifically, a plurality of eleventh annular protrusions 235 (five in this embodiment) are provided in the circumferential direction of the lower surface of the annular sheet body 214a so as to be located between the second ventilation holes 4 in plan view. There is. Note that the eleventh annular projection 235 may also be provided continuously in the circumferential direction like the tenth annular projection 234. Further, the tenth annular protrusions 234 may also be scattered in the circumferential direction like the eleventh annular protrusions 235, but in that case, it is preferable that they be provided facing the eleventh annular protrusions 235. . Note that since the tenth and eleventh annular projections 234 and 235 fit into the second annular projection 10 of the base body 201, they also have the effect of preventing excessive displacement of the valve surrounding portion 214 with respect to the base body 201. Furthermore, since the tenth and eleventh annular protrusions 234 and 235 are erected in the thickness direction of the valve body 203, they also have the effect of suppressing deformation of the entire valve body 203 and the valve surrounding portion 214 in the thickness direction. . This prevents the valve surrounding portion 214 from being deformed more than necessary and improves durability.

Similar to the first embodiment, the first protrusion 209 is provided to reduce the burden of air intake processing by a suction device such as a household vacuum cleaner. Unlike the above, only one suction port is provided so as not to interfere with the small size of the suction port. The first protrusion 209 protrudes from the upper surface of the annular sheet body 214a and is provided on the opposite side of the specific second ventilation hole 4A with respect to the center of the annular sheet body 214a. It is arranged between a pair of adjacent second ventilation holes 4 located on opposite sides. The first protrusion 209 protrudes upward (to the side opposite to the base body 201 side) and extends along the radial direction of the annular sheet body 214a. The height of the first protrusion 209 is preferably set in the range of 0.5 mm to 5.0 mm, taking into consideration the amount of deformation when the first protrusion 209, which is soft, is pressed. If the amount of protrusion of the first protrusion 209 is too small, the load on the suction device cannot be sufficiently reduced. On the other hand, if the amount of protrusion of the first protrusion 209 is too large, the amount of outside air taken in will increase, and the effect of sucking air into the compression bag 6 will decrease. Moreover, when the size of the suction port provided in the suction device is relatively small, the entire second ventilation holes 4, which are plural, cannot be covered with the suction port. In this case, since air is replenished from the outside through the second ventilation hole 4 that is not covered by the suction port, the load on the suction device is reduced and normal operation of the suction device is ensured. Therefore, in this embodiment, unlike the first embodiment, only a single first protrusion 209 is provided. The first protrusion 209 is attached to the base body 201 with the valve body 203 positioned, and the specific ventilation spacer 211A is located below. That is, this embodiment differs from the first embodiment in that the first protrusion 209 is not arranged above the other ventilation spacers 211 except for the specific ventilation spacer 211A. Note that the shape of the first protrusion 209 is not particularly limited as long as a portion of the suction port presses the first protrusion 209 to form the gap. For example, it may be formed around the valve portion 8 in an arcuate shape.

The second protrusion 12 is for positioning the suction port by bringing it into contact with the suction port (suction port positioning protrusion), and the suction port is provided with a notch along its axial direction. When the second boss 13 is inserted into the notch, the second boss 13 is inserted into the notch to reduce the opening area of the notch. Similarly to the first embodiment, the second protrusion 12 has an arc shape with the center of the valve surrounding part 214 as its center, and the protrusion height is set in the range of 1.0 mm to 5.0 mm. It is preferable. The circumferential length of the second protrusion 12 is set to be the same as or slightly shorter than the boss main body 13a of the second boss 13. Further, the second protrusion 12 is arranged according to the second boss 13, and specifically, when the valve body 203 is positioned and attached to the base body 201, the second protrusion 12 is arranged inside the boss body 13a of the second boss 13. It is formed so as to be located above the peripheral edge portion and the thin widened portion 13b. The shape of the second protrusion 12 is not limited to an arc shape, but may be a circle, a rectangle, a polygon, etc., as long as it has the above function.

The ventilation resistance tongue piece 236 is provided in order to maintain the suction effect even when the size of the suction port is small by reducing the opening area of some of the second ventilation holes 4 among the plurality of second ventilation holes 4. It is something that Due to the small size of the suction port positioned by the second protrusion 12, the ventilation resistance tongue piece 236 is inserted into the second ventilation hole 4 which is not covered by the suction port. It is located. Specifically, the ventilation resistance tongue pieces 236 are arranged in a pair of adjacent second ventilation holes 4 located on the opposite side of the second protrusion 12 with respect to the center of the annular sheet body 214a. The ventilation resistance tongue piece 236 has a shape corresponding to the second ventilation hole 4, and in this embodiment has a similar shape that is smaller than the second ventilation hole 4. The ventilation resistance tongue piece 236 is connected to the radially outer edge of the second ventilation hole 4 in the annular sheet body 214a, and is configured to rotate up and down by the intake of air through the suction port. Therefore, when covered by a large-sized suction port (that is, a large-diameter suction port), the ventilation resistance tongue piece 236 rotates upward around the outer peripheral edge, and the ventilation resistance tongue piece 236 It is configured so that suction can also be carried out through the second ventilation hole 4 in which the air is disposed.

[Frame]
The frame body 215 is configured to attach the valve body 203 to the base body 201 at the inner peripheral edge of the frame body 215, similar to the frame body 15 in the first embodiment. The frame body 215 includes a generally circular plate-shaped frame body 15b having an exposure hole 15a in the center, a sixth annular protrusion 19 protruding from the outer peripheral edge of the frame body 15b toward the base body 201, and a sixth annular protrusion 19. A seventh annular protrusion protrudes concentrically with the sixth annular protrusion 19 from the lower surface (surface on the base body 201 side) of the frame body 15b toward the base body 201 on the inside of the body, and is fitted onto the fourth annular protrusion 17 of the base body 201. 20, and an eighth annular protrusion 23 that protrudes toward the side opposite to the base body 201 at the outer peripheral edge of the upper surface of the frame body 15b, and is integrally molded from synthetic resin. The frame 215 of the second embodiment differs from the frame 15 of the first embodiment in that a plurality of upper lid engaging portions 30 are provided.

The frame main body 15b has an annular shape with a circular hole serving as an exposure hole 15a in the center. The exposure hole 15a exposes the valve surrounding portion 214 upward after the frame body 215 is attached to the base body 201. The diameter of the exposure hole 15a may be appropriately set according to the size of the suction port provided in the suction device used for air intake processing. , is set in the range of 60 mm to 100 mm.

The sixth annular projection 19 is a peripheral wall that covers and protects the joint portion (in this embodiment, the welded portion) between the base body 201 and the bag body 61 from the outside. The outer diameter of the sixth annular protrusion 19 is preferably the same as or slightly smaller than the outer diameter of the base body 201.

The seventh annular projection 20 fits into the fourth annular projection 17 of the base body 201 from the outside. The frame 215 is attached to the base body 201 by fitting the seventh annular projection 20 onto the fourth annular projection 17 . As a result, the portion of the frame main body 15b inside the seventh annular protrusion 20 prevents the valve body 203 from being displaced upward (i.e., upward in FIG. 9) at the peripheral edge of the valve body 203, and the base body 201 of the valve body 203 It is possible to ensure the attachment to the The seventh annular protrusion 20 has a base engagement part 34 recessed radially outward at a position on the inner peripheral surface corresponding to the frame positioning part 33 of the fourth annular protrusion 17 in plan view. The frame 215 is positioned by the base engaging portion 34 engaging with the frame positioning portion 33. This ensures close contact between the frame 215 and the base 201, and prevents the frame 215 from rotating relative to the base 201.

The eighth annular protrusion 23 has upper lid engaging portions 30 that are recessed radially inward at a plurality of positions (three locations in this embodiment) on the outer circumferential surface and engage with the upper lid 205. The portion 30 can engage the upper lid 205 in a closed state. In this embodiment, since there is a plurality of upper lid engaging parts 30, the frame body 215 can be more securely engaged with the upper lid 205 than in the first embodiment, which has one upper lid engaging part 30. .

In the present embodiment, the frame body 215 has an annular shape, but instead of this, the frame body 215 may have a polygonal shape such as a triangle or a quadrangle, or an annular body such as an ellipse in cross section. In this case, the base body and the valve body may have shapes corresponding to the frame body. That is, the shape of the valve device is not limited to a cylindrical shape, but may have a polygonal columnar shape such as a triangle or a quadrangle, or an elliptical columnar shape in cross section.

[Top lid]
The upper lid 205, like the upper lid 5 in the first embodiment, is hinged to the frame 215 and opens and closes the exposure hole 15a of the frame main body 15b. The upper lid 205 has a substantially circular plate-shaped lid main body 5a, and in a closed state projects from the outer peripheral edge of the lid main body 5a toward the frame body 215 and corresponds to the upper lid engaging portion 30 of the eighth annular projection 23 in plan view. A twelfth annular protrusion 5b having a frame engaging portion 31 that bulges radially inward at a plurality of positions on the inner circumferential surface and engages with the upper lid engaging portion 30; It includes a pressing part 27 that projects upward and presses the valve part 8 in a state where the frame engaging part 31 is engaged with the top lid engaging part 30, and is integrally molded from synthetic resin. The upper lid 205 of the second embodiment differs from the upper lid 5 of the first embodiment in that a plurality of frame engaging portions 31 are provided.

The lid main body 5a has a disk shape that can cover the valve surrounding portion 214 from above. The diameter of the lid body 5a is approximately the same as that of the frame body 15b.

The twelfth annular protrusion 5b has frame engaging portions 31 that bulge radially inward at a plurality of positions (three locations in this embodiment) on the inner circumferential surface, and the frame engaging portions 31 are The upper lid 205 can be engaged with the upper lid engaging portion 30 of the eighth annular projection 23 in a closed state. Similar to the upper lid engaging portion 30, this embodiment has a plurality of frame engaging portions 31, and the upper lid 205 is different from the first embodiment having one frame engaging portion 31. The engagement with the frame 215 becomes more reliable. Therefore, even if an unexpected force acts on the upper lid 205, all the engagements between the plurality of upper lids 205 and the frame body 215 are difficult to disengage, and the upper lid 205 is likely to be maintained in the closed state. Thereby, the first vent hole 2 is easily kept closed by the valve part 8 to which the pressure of the pressing part 27, which will be described later, contributes.

The pressing portion 27 presses the first annular projection 207 via the valve portion 8 when the upper lid 205 is in the closed state (that is, the frame engaging portion 31 is engaged with the upper lid engaging portion 30). , the first ventilation hole 2 is closed. In this embodiment, the number of engagement points between the upper lid 205 and the frame body 215 is increased and the amount of protrusion of the first annular protrusion 207 is increased compared to the first embodiment, so that the first ventilation hole 2 is more easily blocked. It will definitely be done. The diameter of the pressing portion 27 is provided corresponding to the diameter of the first annular projection 207, and is formed to be substantially the same as or larger than the diameter of the first annular projection 207. Thereby, in a state in which the frame engaging portion 31 is engaged with the top lid engaging portion 30, a good adhesion effect can be obtained between the valve portion 8 and the first annular projection 207. Note that the pressing portion 27 may be a columnar body instead of a cylindrical body, and the cross-sectional shape may be a polygon such as a triangle or a quadrangle instead of a circle. Further, the hardness of the pressing portion 27 may be the same as that of the first annular projection 207, or may be different.

The upper lid 205 is hinged to a frame 215, and the upper lid 205 is opened and closed by rotating the hinged portion of the upper lid 205 around the axis. On the top surface of the lid main body 5a, the frame engaging portions 31 are attached to upper lid engaging portions at locations (three locations in this embodiment) that are slightly closer to the center than the frame engaging portions 31 in plan view. A pressing point display section 5c is provided which displays the points to be pressed when engaging with the mating portion 30 with symbols. After the user completes the intake process, the user rotates the open top lid 205 about the hinge part until the frame engaging part 31 abuts the top lid engaging part 30, and presses the pressed point display part 5c. By pressing these, the frame engaging portion 31 appropriately engages with the upper lid engaging portion 30, and the upper lid 205 is brought into a closed state. In this manner, by providing the pressed point display section 5c, engagement of the upper lid with the frame body is easily performed.

[Assembly and its function]
The valve device 200 is assembled by attaching the frame body 215 after attaching the valve body 203 to the base body 201.

Specifically, first, the positioning block 22 of the valve body 203 is aligned so that it fits into the positioning part 21 of the base body 201, and then the fifth annular protrusion 18 of the valve body 203 is inserted into the third annular protrusion of the base body 201. 16 and the fourth annular projection 17, the valve body 203 is attached to the base body 201. Next, after positioning is performed so that the frame body positioning part 33 of the base body 201 engages with the base body engaging part 34 of the frame body 215, the seventh annular protrusion 20 of the frame body 215 is The frame body 215 is attached to the base body 201 by fitting it onto the annular projection 17 .

This attachment produces the following effects.

1) The valve portion 8 comes into contact with the first annular projection 207. Thereby, the first ventilation hole 2 is more reliably closed.

2) The second annular projection 10 is inserted between the tenth annular projection 234 and the eleventh annular projection 235. This suppresses deformation of the valve surrounding portion 214 in the radial direction, and the valve surrounding portion 214 reliably contacts the suction port even during the intake process.

3) The valve surrounding portion 214 is attached to the base body 201 with most of it spaced apart from the base body 40. Thereby, the protrusion provided along the axial direction of the suction port is accommodated in the space between the valve surrounding part 214 and the base body 201.

4) The first protrusion 209 is arranged above the specific ventilation spacer 211A. As a result, a gap is formed between the suction port and the valve surrounding portion 214, and the burden placed on the suction device during the intake process is reduced.

5) A region between two adjacent second vent holes 4 of the valve enclosure 214 is arranged above the vent spacer 211. Thereby, a space is secured between the deforming valve surrounding portion 214 and the base body 40 during the intake process, and the air permeability of the second vent hole 4 is ensured.

6) The second protrusion 12 is arranged above the second boss 13. As a result, when using a suction port provided with a notch along the axial direction, the second protrusion 12 and the second boss 13 are inserted into the notch, and the opening area formed by the notch shrink.

7) The valve surrounding portion 214 is exposed from the exposure hole 15a, and the unexposed region of the valve surrounding portion 214 comes into contact with the frame main body 15b. As a result, the frame main body 15b suppresses upward deformation of the valve surrounding portion 214, preventing the valve body 203 from coming off the frame 215, and ensuring that the valve surrounding portion 214 is maintained.

If the valve device 200 is formed as described above, similarly to the valve device 100 according to the first embodiment, when the air intake process is performed on the compression bag 206 to remove the air inside the bag, the suction port is connected to the valve. It is brought into contact with the surrounding part 214. Since the valve surrounding part 214 has a predetermined flexibility, the valve surrounding part 214 is deformed toward the base body 201 by the pressure of the suction port on the valve surrounding part 214, and the suction generated by the suction of the suction port The force causes the valve casing 214 to deform towards the suction port, thus adapting to the shape of the suction port. Therefore, even if a suction device is used that has not only a cylindrical shape but also a rectangular cylindrical suction port, a protrusion along the axial direction, or a notch, the valve surrounding portion 214 will have its own compression. and can be adapted to the suction port by deformation. Thereby, the valve surrounding portion 214 and the suction port can be brought into close contact with each other. Further, the size of the valve surrounding portion 214 can be made considerably larger than the valve portion 8, and can cover the suction ports provided in most suction devices including commercially available household vacuum cleaners. Therefore, the valve device 200 can be applied to the suction ports of most of the suction devices.

Next, a specific example will be given and explained.

FIG. 15 is a schematic diagram showing the positional relationship between the valve body and the suction ports when the valve body 203 included in the valve device 200 is pressed by each of the four types of suction ports F1 to F4.

FIG. 15(a) shows a case where a suction port F1 provided with a protrusion along the axial direction is used. In this case, the suction port F1 is pressed against the valve surrounding portion 214 by inserting the protrusion provided on the suction port F1 into the specific second ventilation hole 4A. As a result, the valve surrounding part 214 is elastically deformed downward, and the protrusion is accommodated in the space formed by the valve surrounding part 214 and the base body 201. On the other hand, the portion of the suction port F1 excluding the protrusion comes into contact with the region of the valve surrounding portion 214 where the second vent hole 4 is arranged. Then, due to the suction performed by the suction port F1, the valve body 203 (specifically, the valve part 8 and the valve surrounding part 214) is elastically deformed upward, thereby opening the first ventilation hole 2 and opening the ventilation resistance tongue. The piece 236 pivots upwardly to direct the air in the compression bag 206 through all the second vent holes 4 in the region, including the second vent hole 4 in which the airflow resistance tongue piece 236 is located. Can be inhaled. Moreover, when the first protrusion 209 comes into contact with the suction port F1, a minute gap is formed to take in outside air. Therefore, in the air intake process for the compression bag 206, outside air can be taken in through the minute gap, and the load on the suction device can be reduced.

FIG. 15(b) shows a case where a suction port F2 provided with a notch along the axial direction is used. In this case, the suction port F2 is pressed against the valve surrounding portion 214 by bringing the notch provided in the suction port F2 into contact with the second protrusion 12 and the second boss 13 located below it. Thereby, the second protrusion 12 and the second boss 13 are inserted into the notch, the opening area formed by the notch is reduced, and excessive intake of outside air from the notch is suppressed. On the other hand, the portion of the suction port F2 excluding the notch contacts the region of the valve surrounding portion 214 where the second vent hole 4 is arranged. Then, due to the suction performed by the suction port F2, the valve body 203 (specifically, the valve part 8 and the valve surrounding part 214) is elastically deformed upward, thereby opening the first ventilation hole 2 and opening the ventilation resistance tongue. The piece 236 pivots upwardly to direct the air in the compression bag 206 through all the second vent holes 4 in the region, including the second vent hole 4 in which the airflow resistance tongue piece 236 is located. Can be inhaled. Further, when the first protrusion 209 comes into contact with the suction port F2, a minute gap is formed to take in outside air. Therefore, in the air intake process for the compression bag 206, outside air can be taken in through the minute gap, and the load on the suction device can be reduced.

FIG. 15(c) shows a case where a rectangular cylindrical suction port F3 with a large outer peripheral edge size is used. In this case, the suction port F3 is pressed against the valve surrounding portion 214 so that the upper end portion of the suction port F3 comes into contact with the upper end portion of the second protrusion 12 . As a result, the entire suction port F3 comes into contact with the area including all the second ventilation holes 4 of the valve surrounding part 214. Due to the suction performed by the suction port F3, the valve body 203 (specifically, the valve part 8 and the valve surrounding part 214) is elastically deformed upward, thereby opening the first ventilation hole 2 and opening the ventilation resistance tongue piece 236. rotates upward and sucks the air in the compression bag 206 through all the second ventilation holes 4 in the area, including the second ventilation hole 4 in which the ventilation resistance tongue piece 236 is arranged. be able to. Further, when the first protrusion 209 comes into contact with the suction port F3, a minute gap is formed to take in outside air. Therefore, in the air intake process for the compression bag 206, outside air can be taken in through the minute gap, and the load on the suction device can be reduced.

FIG. 15(d) shows a case where a small-sized suction port F4 is used. In this case, the suction port F4 is pressed against the valve surrounding portion 214 so that the upper end of the suction port F4 comes into contact with the lower end of the second protrusion 12 . As a result, the suction port F4 comes into contact with a region of the valve surrounding portion 214 that includes the specific second vent hole 4A and the second vent hole 4 adjacent thereto. Then, due to the air intake performed by the suction port F4, the second vent holes 4A, 4 and the valve part 8 in the area are elastically deformed upward, so that the first vent hole 2 is opened, and the second vent hole 2 in the area is elastically deformed. Air inside the compression bag 206 can be sucked through the ventilation holes 4A, 4. On the other hand, since the second ventilation hole 4 in which the ventilation resistance tongue piece 236 is arranged is outside the area, the ventilation resistance tongue piece 236 does not rotate upward during intake through the suction port F4 and is outside the area. The second ventilation hole 4 is maintained in a state where the opening area is reduced. Therefore, by suppressing the intake of outside air through the second ventilation hole 4 located outside the area, the intake process by the suction port F4 can be performed efficiently.

As described above, the second embodiment discloses various aspects of technology, and the main technologies are summarized below.

The valve device according to the second embodiment is a valve device used for a compression bag including a bag body, and includes a first ventilation hole that is attached to a through hole of the bag body and communicates between the inside and outside of the bag body. The valve body includes a base body, a valve body that opens and closes the first vent hole, and a frame body that attaches the valve body to the base body at a peripheral portion thereof, and the valve body has a valve part that opens and closes the first vent hole; a valve surrounding part located around the valve part, and at least a portion of which is spaced apart from the base body; A plurality of second ventilation holes communicating with the pores are arranged around the valve part, and the part installed apart from the base body has a flexible annular shape that is elastically deformed by a pressing force toward the base body side. a sheet body, and a suction port for positioning a suction port provided on the annular sheet body in a state protruding from the side opposite to the base body side and arranged on the outer edge side of one of the second ventilation holes of the plurality of second ventilation holes. At least a portion of the second ventilation hole is configured to be openable and closable within the projection and at least one second ventilation hole located on the side opposite to the suction port positioning projection with respect to the center of the annular sheet body. and a ventilation resistance tongue connected to the annular sheet body.

In particular, since the valve device according to the second embodiment includes the ventilation resistance tongue, the large suction port allows the second ventilation hole of the plurality of second ventilation holes to be opened and closed by the ventilation resistance tongue. , when both of the second ventilation holes in the open state are covered without being covered by the ventilation resistance tongues, the ventilation resistance tongues are in the closed state due to the intake of air through the suction port; By opening the second vent hole which can be opened and closed by the airflow resistor, not only air can be taken in through the second ventilation hole which is in an open state without using the ventilation resistance tongue, but also air can be taken in through the second ventilation hole which can be opened and closed. It becomes possible. Therefore, a sufficient intake effect can be obtained by combining both vent holes. On the other hand, if only the second ventilation hole, which is in an open state, is covered by a small-sized suction port without being covered by the ventilation resistance tongue, the ventilation resistance tongue may open and close even when air is taken in by the suction port. Since the possible second vent is in a closed state, outside air is not drawn into the suction port through the second vent. Therefore, proper intake is performed.

Although the embodiments of the present invention have been described above in detail by combining the drawings, the present invention is not limited to the above embodiments, and it is understood that those skilled in the art will not depart from the gist of the present invention as long as it is within the knowledge of those skilled in the art. Various changes may be made to the premise.

Claims (7)

A valve device used in a compression bag having a bag body, the valve device comprising:
a base body having a first ventilation hole attached to the through hole of the bag body and communicating between the inside and outside of the bag body;
a valve body that opens and closes the first vent;
a frame body for attaching the valve body to the base body at its peripheral edge;
The valve body is
a valve portion that opens and closes the first vent;
a valve surrounding part located around the valve part, at least a part of which is spaced apart from the base body;
The valve surrounding part has a second ventilation hole that communicates with the first ventilation hole when the valve part is in an open state, and the part that is spaced apart from the base body faces the base body side. A valve device having flexibility to be elastically deformed by a pressing force directed toward the valve. The valve device according to claim 1, wherein the valve portion has a table-like shape that projects further toward the base body than the valve surrounding portion. The valve device according to claim 1 or 2, wherein a plurality of the second ventilation holes are distributed around the first ventilation hole when viewed from the direction from the valve body toward the base body. At least one first protrusion is provided on the valve surrounding portion to protrude toward a side opposite to the base body side,
The first protrusion extends from the inside to the outside of the valve surrounding portion, and is disposed offset from the first vent hole when viewed from the direction from the valve body toward the base body,
The valve device according to any one of claims 1 to 3, wherein a first boss is provided at a location of the base body corresponding to the first protrusion so as to protrude toward the valve surrounding portion. . A second protrusion is provided on the side opposite to the valve part with respect to the second vent hole in the valve surrounding part, and protrudes toward the side opposite to the base body side, and the second protrusion is provided with the second protrusion in the state opposite to the base side. A second boss corresponding to the second protrusion is provided on the base body in a state of protruding toward the valve surrounding part, the second boss corresponding to the second protrusion having a circular arc shape with the center of the valve surrounding part as the center. The valve device according to any one of items 1 to 4. A valve surrounding part supporting annular projection protruding toward the valve surrounding part is provided on the base body, and the valve surrounding part supporting annular projection is located below the valve surrounding part. The valve device according to any one of the items. Also includes a top lid,
an annular projection for upper lid engagement that projects in a direction away from the valve surrounding portion is provided on the frame;
the upper lid is movably connected to the frame;
The upper lid is engageable with the upper lid engaging annular projection,
Claims 1 to 6, wherein a pressing portion is provided at a location of the upper lid corresponding to the first ventilation hole to press the valve portion in a state where the upper lid is engaged with the upper lid engaging annular protrusion. The valve device according to any one of the above.

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