JP4526089B2 - Valve structure and soft expansion product to which the valve structure is applied - Google Patents

Description

  The present invention relates to a valve structure formed of a soft material that is provided in a soft expanded material and injects and discharges gas into the soft expanded material.

For example, conventionally, a soft expanded material made of a soft material has been provided with a valve structure made of a soft material for injecting a gas such as air into or out of the internal space of the soft expanded material body. .
As such a valve structure, for example, a cylindrical body having both ends open and provided with a plug member that can be attached and detached at one end side, and the other end side is welded to the soft expanded body, so that the internal space of the main body and the cylindrical body are sealed. There is known a structure in which a check valve is provided inside the cylindrical body. (See, for example, reference 42 in Patent Document 1). However, since such a valve structure is welded from the outside of the soft expanded body , the valve structure protrudes in the form of a ridge on the outside of the soft expanded body. When a soft expansion product is used, if a strong external force is applied to the valve structure, there is a possibility that the valve structure is detached and the inner space of the soft expansion product cannot be kept airtight.

Therefore, Patent Document 2 discloses a valve structure housed in the internal space of the soft expanded material. Such a valve structure is formed in a tube shape that is flattened with a soft material, and one open end of the tube is fixed inside the hole of the soft expansion material. In this case, when the internal space of the soft expanded material is filled with air, the other open end of the tube is flattened by the internal atmospheric pressure, thereby forming a valve structure in close contact with each other. The internal space of the inflated material is kept airtight.
Further, when air is injected and discharged in a state where the internal space of the soft expanded material and the outside communicate with each other, a rod-shaped body is inserted from the outside of the soft expanded material into the close contact portion of the tube, and the tube has the thickness of the rod-shaped body. Make a gap in the close contact area.

However, when the rod-shaped body is inserted into and directly touches the close-contact portion of the tube, the flexibility of the close-contact portion of the tube is lost, and the deformation mark of the rod-like body remains on the tube, making it impossible to adhere to the tube. There was a problem that the airtightness of the space was impaired.
No. 3072193 Japanese Utility Model Publication No. 57-126298

  An object of the present invention is to apply a valve structure that is provided in an internal space of a soft expanded material, keeps the air tightness of the inner space of the soft expanded material, and can inject and discharge gas without touching a valve portion, and the valve structure Is to provide a soft expanded material.

The technical means made by the present invention in order to achieve the above-mentioned object is to fix the soft expanded body together with the soft expanded body by adhering to the soft expanded body having a predetermined internal space. A valve structure in which an internal space is provided with a valve portion to keep the internal space airtight and gas can be injected and discharged, and one end is closed at a predetermined thickness and the other end is opened. a body, disposed on the other end side of the outer peripheral surface of the valve body, and a fixing unit for fixing with the flexible expansion material body, over the inner surface of the inner space side of the valve body and the thickness of the occluded segment of said one end from the outer surface of one end cuts, and the valve portion movably formed in the longitudinal direction of the valve body to one of the opposing surfaces of the incision, the raised portion protruding toward the inner space side one of said cuts, the raised portion is a valve By pressing in the length direction of the main body, close contact of the cut of the valve part Outer surface side space and the valve interior space of the main body of one of the opposing surfaces moves occlusion of is that was the valve structure, wherein the communicating. The inner peripheral surface on the other end side of the bulging portion of the valve body may be provided with a protrusion bulging from the inner peripheral surface to the inner space, and the notch is formed from the outer peripheral side of the outer surface of one end. You may cut diagonally toward the center side of the inner surface by the side of the internal space of a valve main body.

In addition, the soft expanded body is fixed to a soft expanded body having a predetermined internal space to form a soft expanded body together with the soft expanded body, and a valve portion is provided in the internal space of the soft expanded body to make the internal space airtight. The valve structure is capable of injecting and discharging gas, and has a cylindrical valve body with one end closed at a predetermined thickness and the other end opened, and the other end side of the outer peripheral surface of the valve body. is a fixing portion for fixing with the flexible expansion material body, cuts across the inner surface of the inner space side of the valve body and the thickness of the occluded segment of said one end from the outer surface of one end, a pair of opposing surfaces of said notches of said valve body lengths A valve portion formed so as to be movable in a direction perpendicular to the vertical direction, and a protrusion bulging from the inner peripheral surface of the inner space to the inner space, and the protrusion is pushed toward the outer peripheral surface, thereby The outer surface of the closed part is moved by a pair of opposed surfaces with close incisions It may be the valve structure, characterized in that the interior space of the space and the valve body are communicated.

A plurality of protrusions of the valve structure may be provided at a predetermined interval in the circumferential direction of the inner circumferential surface of the internal space, or may be continuously provided in the circumferential direction of the inner circumferential surface of the inner space. is there. Furthermore, the adhering part may be provided with a flange part that locks the valve structure on the soft expanded article main body, extending from the outer peripheral edge of the adhering part and continuously in the circumferential direction of the outer peripheral surface of the valve main body. In addition, the fixing portion has a locking portion for locking the valve structure to the soft expanded body, has a predetermined interval from the other end of the valve body in one end direction, and extends from the outer peripheral surface of the valve body. You may provide continuously in the circumferential direction of the surface.
Further, the soft expanded body may be a soft expanded body characterized by having a hole portion penetrating the inner and outer surfaces and fitting the fixing portion of the valve structure described above into the hole portion. The soft expanded body may be integrally formed by rotational molding.

  According to the present invention, a valve structure that is provided in the internal space of the soft expanded material to keep the air tightness of the inner space of the soft expanded material and can inject and discharge gas without touching the valve portion, and the valve structure are applied. It has become possible to provide a soft expanded material.

Hereinafter, a valve structure according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows the shape of the valve structure 10 according to the first embodiment provided in the soft expanded body 24, (a) is a side view thereof, and (b) is a view of the valve structure 10 and the soft expanded body 24. (C) is the figure which looked at the valve structure 10 from the one end side. FIG. 2 shows a state in which the nozzle 40 is inserted into the valve body 11 of the valve structure 10 according to the first embodiment provided in the soft expanded body 24, and (a) is a cross-sectional view when the nozzle 40 is inserted. b) is a sectional view showing a state in which the nozzle 40 is guided, and (c) is a sectional view showing a state in which the valve structure 10 is opened.
3 shows the shape of the valve structure 10 according to the second embodiment provided in the soft expanded body 24, (a) is a side view thereof, and (b) is a view of the valve structure 10 and the soft expanded body 24. (C) is the figure which looked at the valve structure 10 from the one end side. FIG. 4 shows a state in which the valve portion 14 of the valve structure 10 according to the second embodiment provided in the soft expanded body 24 is opened. FIG. 4A is a partial cross section of the valve structure and the soft expanded body 24. It is a figure, (b) is the figure which looked at the valve structure from the one end side, (c) is sectional drawing by the AA line of (a).
5 is a cross-sectional view showing another form of fitting of the valve structure 10 and the soft expanded body 24, FIG. 6 is a cross-sectional view showing another form of the tubular portion of the valve structure, and FIG. FIG. 8 is a perspective view showing a relationship between the valve structure 10 and the soft expanded body 24, and FIG. 9 is a perspective view showing an example of a usage form of the soft expanded body 20. FIG.
In addition, the air that is injected into and discharged from the soft expanded material 20 by the valve structure 10 according to the present invention is a concept that includes not only the atmosphere but also a wide range of gases. For example, a gas such as helium is within the scope of the present invention.

The valve structure 10 according to the present embodiment is formed of a soft material, for example, a resin material such as silicon or a rubber material in a substantially cylindrical shape by injection molding, and is a substantially rectangular parallelepiped soft material that is formed by, for example, rotational molding as shown in FIG. It is used by being fitted into the hole 21 of the inflatable body 24 (see the broken line in the figure).
As shown in FIG. 1, the shape of the valve structure 10 includes a valve body 11 formed in a cylindrical shape, a fixing portion F that locks the valve body 11 to the soft expanded body 24, and air to the soft expanded body 20. A valve portion 14 that injects and discharges gas and maintains airtightness, a raised portion 12c for opening and closing a mating surface of the valve portion 14, and a protruding portion 30 that guides the tip portion 40a of the nozzle 40 to the raised portion 12c. I have. In addition to these configurations, in the present embodiment, the fixing portion F includes a flange portion 15 and a locking portion 16.

One end 12 of the cylindrical valve body 11 is closed with a predetermined thickness D, and the other end 13 is opened. Therefore, the valve body 11 has an internal space S in which the other end 13 is opened.
In this embodiment, the cylindrical shape of the valve body 11 is a circular cylindrical cross section. However, the cylindrical cross sectional shape is not limited to a circular shape, and may be an elliptical shape or a rectangular shape, for example. good.

Further, the fixing portion F is provided on the other end 13 side of the outer peripheral surface of the valve body 11. Further, in the present embodiment, the fixing portion F includes a flange portion 15 and a locking portion 16.
The flange portion 15 extends outwardly from the outer peripheral edge 13a of the other end 13 of the valve body 11 outwardly perpendicular to the valve body 11, and is formed in an annular shape that is continuous in the circumferential direction. The locking portion 16 is provided on the outer peripheral surface 11 a having a predetermined interval P in the direction from the other end 13 to the one end 12 of the valve body 11. The locking portion 16 extends from the outer peripheral surface 11a outward in a direction perpendicular to the valve body 11 to have a smaller diameter than the flange portion 15, and is formed in an annular shape that is continuous in the circumferential direction.

As shown in FIG. 1B, a circumferential groove 22 is formed in the hole portion 21 of the soft expanded body 24, and the flange portion 15 is fitted in the circumferential groove 22, whereby the valve structure 10 is formed. The hole 21 is fixed and locked. In this case, the valve part 14 to be described later is housed in the soft expanded material 20.
Furthermore, the inner surface side of the soft groove 20 of the circumferential groove 22 forms a jaw portion 23 that protrudes toward the center of the hole portion 21.
The jaw portion 23 protrudes so as to form a space whose inner diameter surface is slightly smaller than the diameter of the outer peripheral surface of the tubular valve body 11 and has the same thickness as the predetermined interval P. is doing. Therefore, the jaw part 23 of the soft expansion body 24 and the outer peripheral surface of the valve body 11 are in close contact with each other, and a tight force is applied, and the jaw part 23 is in close contact with the hook part 15 and the locking part 16. Thus, the valve structure 10 is firmly locked at a predetermined position of the hole 21.

  In this example, the flange portion 15 and the locking portion 16 are provided as the fixing portion F. However, as long as the valve body 11 is locked and fixed at a predetermined position of the soft expanded body 24, the fixing portion F is the hook portion. 15 and the locking part 16 may not be provided. In that case, the hole 21 of the soft expanded body 24 is formed to have a diameter slightly smaller than the diameter of the outer peripheral surface of the valve body 11, and the thickness of the hole 21 is the contact between the valve body 11 and the hole 21. It is preferably formed with a sufficient thickness so as to increase the area. As a result, the fixing portion F and the hole portion 21 are in close contact with each other over a wide area, and the tightening force of the hole portion 21 acts on the fixing portion F so that the valve structure 10 is firmly locked at a predetermined position of the hole portion 21. The

The valve portion 14 is formed at one end 12 of the valve body 11. Specifically, the thickness D of the closed portion of the one end 12 is cut from the outer surface 12a of the one end 12 to the inner surface 12b on the inner space S side. In this embodiment, the cut is formed by cutting obliquely from the outer peripheral side of the outer surface 12a of the one end 12 of the valve body 11 toward the center of the internal space S of the valve body 11 (FIG. 1). (See (b) and FIG. 1 (c)).
In addition, the pair of facing surfaces 14a and 14b formed by the incision keeps the airtightness inside the soft expanded material 20 by closely contacting (valve closed) without any gap, and the pair of facing surfaces 14a and 14b formed by the incision. 14 b, the one opposing surface 14 a on the outer surface 12 a side of the inclined surface of the cut moves in the length direction (vertical direction in the drawing) of the valve body (the valve open state), whereby the internal space S of the valve body 11. And the space on the outer surface side of the one end 12 communicate with each other.

The protrusion 30 is provided on the inner peripheral surface on the other end 13 side of the raised portion 12c of the valve body 11 to be described later, and is formed to bulge from the inner peripheral surface to the internal space S. In the present embodiment, three protrusions 30a, 30b, 30c are provided in the circumferential direction of the inner peripheral surface of one side of the cut (on the side of the moving opposing surface 14a), and the inner side of the other side of the cut (on the side of the opposing surface 14b). One protrusion 30d is provided on the peripheral surface. The four protrusions 30a, 30b, 30c, and 30d are arranged at an interval of approximately 90 degrees in the circumferential direction.
Note that the protrusions 30a, 30b, 30c, and 30d are formed in a quadrangular cross section in this embodiment, and chamfered toward the internal space S on the upper end side.

These four protrusions 30a, 30b, 30c, and 30d act as a guide for guiding a tip 40a of a nozzle 40 described later to a predetermined position. In the present embodiment, the tip 40a of the nozzle 40 is arranged as the predetermined position so as to be guided on the substantially central axis of the internal space S at the inner circumferential end of each projection 30a, 30b, 30c, 30d. . Further, the tip 40a of the nozzle 40 is smoothly guided by the chamfering without being caught by the protrusions 30a, 30b, 30c, and 30d.
In addition, the protrusion part 30 (30a, 30b, 30c, 30d) can be formed by providing a predetermined | prescribed protrusion in the metal mold | die at the time of shape | molding the valve structure 10. FIG.
In this embodiment, the protrusions 30a, 30b, 30c, and 30d are formed in a quadrangular cross section, but the present invention is not limited to this, and may have other shapes. For example, it may be formed to bulge out from the peripheral surface of the internal space S into a semi-elliptical shape.

  The raised portion 12c is formed to protrude from the inner surface 12b on one side (the moving facing surface 14a side) of the cut toward the internal space S with a predetermined length. In the present embodiment, the protrusion 30a and the facing surface 14a are formed so as to span the inner peripheral surface of the valve body 11 in parallel with the facing surface 14a in plan view (see FIG. 1C). ). In addition, the upper surface of the both ends of the protruding part 12c and the lower end of the projection parts 30b and 30c are formed continuously.

In the valve structure 10 formed in this way, when the soft expansion material 20 is filled with air, the cut portion (valve portion 14) is closed by the atmospheric pressure (the opposing surfaces 14a and 14b overlap each other). The opposed surfaces 14a and 14b of the cut portion (valve portion 14) are in close contact with each other without any gaps, and the inner space R of the soft expanded material 20 can be kept airtight.
Further, when air is injected into and discharged from the soft expansion material 20, the nozzle 40 is inserted from the open other end 13 of the valve body 11 toward the internal space S of the valve body 11 (see FIG. 2A). . In the present embodiment, the nozzle 40 is provided with a nozzle hole 40b along its axis, and the tip end portion 40a of the nozzle 40 is formed in a tapered shape.
When the tip 40a of the nozzle 40 is inserted until it abuts against the protrusions 30a, 30b, 30c, 30d, the tip 40a of the nozzle 40 is guided by the protrusions 30a, 30b, 30c, 30d, and the tip of the nozzle 40 is inserted. The position of the portion 40a is corrected closer to the center of the internal space S (see FIG. 2B).

  Further, when the nozzle 40 is inserted, the outer peripheral side of the nozzle hole 40b of the nozzle 40 comes into contact with the raised portion 12c. At this time, since the tip 40a of the nozzle 40 is guided by the protrusions 30a, 30b, 30c, and 30d, the nozzle 40 fits into a region where there is no ridge 12c (see S1 in FIG. 2 (b)). It is possible to avoid a state in which the nozzle hole 40b is not in contact with the crest 12c or a state in which the nozzle hole 40b is in contact with the raised portion 12c.

  As described above, the projecting portion 30 (30a, 30b, 30c, 30d) and the raised portion 12c are arranged so that the tip portion 40a of the nozzle 40 is raised as a result of the projection portion 30 guiding the tip portion 40a of the nozzle 40. It is necessary that the nozzle hole 40b of the nozzle 40 is disposed so as to be surely in contact with the portion 12c and not to be blocked by the raised portion 12c. In the present embodiment, the ridge portion 12 c is provided so as to guide the tip end portion 40 a of the nozzle 40 on the substantially central axis of the internal region S of the valve body 11, and the bulge portion 12 c is substantially the center of the internal region S of the valve body 11. Arranged so as to be off-axis.

In this case, when the nozzle 40 is further pushed in, the tip end portion 40 a of the nozzle 40 acts to push the raised portion 12 c in the length direction of the valve body 11.
By the force of pushing the raised portion 12c in the length direction of the valve body 11, the side surface portion 12d of the valve body 11 on the raised portion 12c side is extended in the length direction of the valve body 11, and the raised portion 12c and One end 12 of the valve body 11 formed integrally is pushed out in the length direction of the valve body 11.
At this time, the opposing surface 14a of the valve part 14 moves in the length direction of the valve body. As a result, the relationship (closed state) in close contact with the facing surface 14b of the facing surface 14a of the valve portion 14 is released, and a gap is created between the facing surfaces 14a and 14b, so that the closed end 12 of the valve body 11 is closed. The outer surface 12a and the internal space S communicate with each other to open the valve (see FIG. 2C).

In the state where the valve portion 14 is opened, the tip portion 40a of the nozzle 40 opens between the opposed surfaces 14a and 14b of the valve portion 14 via the raised portion 12c. Is not touched by foreign matter (for example, the tip 40a of the nozzle 40).
Therefore, since the opposing surfaces 14a and 14b of the valve portion 14 are not roughened or deformed, in a state where the valve portion 14 is closed, the opposing surface 14b of the opposing surface 14a of the valve portion 14 and Can be obtained.

In addition, since the tip 40 a of the nozzle 40 is formed in a tapered shape, on the other end 13 side of the valve body 11, the peripheral surface that is not reduced in diameter by the taper of the nozzle 40 is formed on the other end 13 of the internal space S. It closely adheres to the edge of the other end 13 so as to close the opening.
Thereby, since the airtightness between the inner space R and the outside of the soft expanded material 20 is maintained at the contact portion between the nozzle 40 and the other end 13, the soft expanded material is supplied by supplying air to the nozzle hole 40 b of the nozzle 40. 20 is filled with air.

In the present embodiment, the nozzle 40 having a tapered tip 40a is employed. However, the shape of the nozzle 40 is not limited to this, and other nozzles can be used as long as the tip 40a can push out the raised portion 12c. It may be a shape. For example, the tip 40a of the nozzle 40 may be reduced in diameter with a step, and the peripheral surface of the nozzle 40 that is not reduced in diameter may be in close contact with the other end 13 side of the valve body 11. Or the nozzle 40 may be formed with the fixed diameter including the front-end | tip part 40a. In this case, a close contact member (for example, a ring-shaped thin film) that fills the diameter difference with the nozzle 40 may be provided on the other end 13 side of the valve body 11.
Further, as a method for filling the soft expanded material 20 with air, a solid rod-like body (not shown) may be used instead of the nozzle 40. In this case, a rod-like body is inserted into the valve body 11 and the valve portion 14 is opened by pushing out the raised portion 12c, and a blower pipe is covered so as to cover the opening on the other end 13 side of the valve body 11. Air may be sent in.

  When the air filled in the soft expanded material 20 is exhausted, the nozzle hole 40b of the nozzle 40 may be opened to the atmosphere. Further, when the nozzle 40 is not used, the one end 12a side of the valve main body 11 and the internal space S communicate with each other by inserting a rod-shaped body (not shown) and pushing the raised portion 12c to open the valve portion 14. Thus, the air filled in the soft expanded material 20 can be exhausted.

The valve structure 10 according to the present embodiment is the same in the outer shape of the valve body 11 as the outer shape of the valve structure 10 described in the first embodiment, and is characterized by a structure that opens and closes the valve portion 14 and the valve portion 14. Have Therefore, the following description will be focused on the characteristic portion, and description regarding the outer shape of the valve body 11 will be omitted.
As shown in FIGS. 3 (a) and 3 (b), the inner shape of the valve structure 10 injects and discharges air to and from the valve body 11 formed in a cylindrical shape and the soft expansion material 20 and maintains airtightness. The valve part 14 and the protrusion part 30 which performs the expansion | deployment effect | action of the valve part 14 are provided.

One end 12 of the cylindrical valve body 11 is closed with a predetermined thickness D, and the other end 13 is opened. Therefore, the valve body 11 has an internal space S in which the other end 13 is opened. Further, one end 12 side of the internal space S is tapered.
In this embodiment, the cylindrical shape of the valve body 11 is a cylindrical shape with a circular cross section. However, the cross sectional shape of the cylinder is not limited to a circular shape. For example, an elliptical shape or a rectangular shape may be used. good.

Further, the valve portion 14 is formed at one end 12 of the valve body 11. Specifically, the thickness D of the closed portion of the one end 12 is cut from the outer surface 12a of the one end 12 to the inner surface 12b on the inner space S side.
Further, as shown in FIG. 3C, the cut is cut across the end face of the one end 12 of the valve body 11. By being cut in this way, the cut portion (valve portion 14) of the one end 12 can be moved so as to be separated in a direction perpendicular to the length direction (vertical direction in the figure) of the tubular valve body 11. ing. The opposed surfaces 14a and 14b of the cut portion (valve portion 14) are in close contact with each other when the valve is closed (when not expanded).

Furthermore, the protrusion 30 is provided in the internal space S of the valve body 11 and is formed to bulge out in a semi-elliptical shape from the inner peripheral surface thereof to the internal space S. A plurality of the protrusions 30 are provided at a predetermined interval in the circumferential direction of the inner peripheral surface of the internal space S. In the present embodiment, four protrusions 30a, 30b, 30c, and 30d are provided as an example. In addition, the protrusion part 30 can be formed by providing a predetermined | prescribed protrusion in the metal mold | die at the time of shape | molding the valve structure 10. FIG.
In this embodiment, the protrusions 30a, 30b, 30c, and 30d are formed to bulge into a semi-elliptical shape, but the present invention is not limited to this, and other shapes may be used. For example, it may be formed in a quadrangular cross section.

When the soft expansion material 20 is filled with air, the valve structure 10 formed in this way is pressed in the direction of closing the opposing surfaces 14a and 14b (valve portion 14) by the atmospheric pressure, and the valve portion 14 The opposing surfaces 14a and 14b can be in close contact with each other without any gaps, and the air tightness of the inner space R of the soft expanded material 20 can be maintained.
In addition, when air is injected into and discharged from the soft expansion material 20, the nozzle 40 is inserted from the other open end 13 of the valve body 11, as shown in FIG. In the present embodiment, the tip 40a of the nozzle 40 is formed in a tapered shape.
At this time, the tip portion 40a of the nozzle 40 pushes the protrusions 30a, 30b, 30c, and 30d toward the outer peripheral surface, so that the opposing surface 14a of the valve portion 14 formed integrally with the protrusions 30a and 30b is formed. While being pushed out to the left in the outer peripheral view, the opposed surface 14b of the valve portion 14 formed integrally with the projections 30c and 30d is pushed out to the right in the outer peripheral view. Thereby, the contact state of the opposing surfaces 14a and 14b is released, and the opposing surfaces 14a and 14b are moved away from each other and opened.

At this time, as shown in FIGS. 4 (a) to 4 (c), the inner surface 12b on the inner space S side of the cut is pulled in the expanding direction (left-right direction in the figure), thereby forming the taper. A notch extending from the tapered front end portion (inner surface 12b on the inner space S side) of the inner space S to the outer surface 12a of the one end 12 forms a hole H. In this case, the hole H communicates with the space on the outer surface side of the one end 12 of the valve body 11 through the space between the opposing surfaces 14 a and 14 b of the valve portion 14.
That is, the size of the hole H can be adjusted by the depth of the cut, and the deeper the depth of the cut, the larger the size of the hole H when the valve is opened. It should be noted that the size of the hole H may be set freely depending on the size and usage environment of the soft expanded material 20 in which the valve structure 10 is used.

In addition, in the state which opened the valve part 14, since the front-end | tip part 40a of the nozzle 40 has opened between the opposing surfaces 14a and 14b of the valve part 14 via protrusion part 30a, 30b, the opposing surface of the valve part 14 A foreign object (for example, the front end portion 40a of the nozzle 40) does not touch the 14a and 14b.
Therefore, since the opposing surfaces 14a and 14b of the valve portion 14 are not roughened or deformed, in a state where the valve portion 14 is closed, the opposing surface 14b of the opposing surface 14a of the valve portion 14 and Can be obtained.

Moreover, in each Example mentioned above, in the fitting of the soft expanded body 24 and the valve body 11, the circumferential groove 22 of the hole 21 of the soft expanded body 24 fits the flange 15 of the valve body 11, The jaw portion 23 formed in the circumferential groove 22 toward the inner surface of the soft expanded material 20 is sandwiched between the flange portion 15 and the locking portion 16 of the valve main body 11. As shown in FIG. 5, in addition to the circumferential groove 22 that fits with the flange portion 15, a circumferential groove 25 that fits with the locking portion 16 may be provided. In this case, the valve body 11 is firmly locked by the hole 21 of the soft expanded body 24.
In the present embodiment, the valve body 11 is formed in a cylindrical shape, but may have other shapes as long as one end 12 is closed with a predetermined thickness D and the other end 13 is opened. For example, as shown in FIG. 6, the one end 12 side of the valve body 11 may be formed in a tapered shape.

Furthermore, in the internal space S of the valve body 11 according to each of the above-described embodiments, the protrusions 30 a, 30 b, and 4 project in the circumferential direction of the internal peripheral surface of the internal space S. Although 30c and 30d are provided, the protrusions 30a, 30b, 30c, and 30d may have other arrangements.
For example, the two protrusions 30a and 30b may be arranged to face each other (see FIG. 7A), and the three protrusions 30a, 30b and 30c are arranged at a predetermined interval in the circumferential direction. (See FIG. 7B). Alternatively, only one protrusion 30a may be provided (see FIG. 7C), or the protrusion 30 is an annular protrusion 30a that is continuous in the circumferential direction of the inner peripheral surface of the internal space S. (See FIG. 7D).
Even in these arrangements, the valve portion 14 can be opened by guiding the tip portion 40a of the nozzle 40 to the raised portion 12c by the protrusion 30 (see Example 1). Alternatively, the valve portion 14 can be opened by pushing the protruding portion in the outer circumferential direction with the tip portion 40a of the nozzle 40 (see Example 2). Therefore, the valve body 11 according to the present embodiment can be molded not only by injection molding but also by sol slush molding (rotational molding).

  Further, according to the valve structure 10 of each of the embodiments described above, the valve structure 10 is used by being fitted into the hole 21 of the soft expanded body 24, so that the valve structure 10 is the outer surface of the soft expanded body 24. The valve structure 10 is broken and the inner space R of the soft expansion material 20 is damaged even if a strong external force is applied during use of the soft expansion material 20 without damaging the aesthetic appearance of the soft expansion material 20. There is no longer any loss of airtightness.

  In each of the above-described embodiments, the case where the valve structure 10 is fitted to the soft expanded body 24 formed into a substantially rectangular parallelepiped has been described. However, the shape of the soft expanded body 24 is not limited to the substantially rectangular parallelepiped, It can be freely selected according to the requirements of the usage environment. Since the soft expanded body 24 can be formed by rotational molding, for example, even a wedge-shaped soft expanded body 24 having a thin thickness on one side as shown in FIG. 9 can be easily formed. is there.

The soft inflatable material 20 in which the valve structure 10 is fitted to the wedge-shaped soft inflatable material body 24 as shown in FIG. 9 is in high demand especially when caring for a bedridden person. After inserting the soft inflated material 20 that has been deflated under the body of the cared person, the soft inflated material 20 is inflated by sending air to the valve structure 10 to cause the body of the cared person to lie sideways, It is possible to provide care such as changing clothes.
This reduces the labor that the caregiver used to raise the cared person's body with his / her strength and supports the cared person's body over a wide area, so that a strong external force acts on a part of the cared person's body. For example, even a cared person who has caused bed slippage is less likely to suffer.

Furthermore, when ending care, it can be easily and gently exhausted from the valve structure 10 fitted to the soft inflatable body 24, so that the care recipient's body is not painful. Can be returned to the pre-care position.
In an example of the above-mentioned usage pattern, after the soft expanded material 20 that has been deflated is inserted under the body of the care recipient, the soft expanded material 20 is expanded by supplying air to the valve structure 10. For example, the expanded soft expanded material 20 may be inserted under the body and used as a cushion.

Moreover, as another usage pattern of the soft expansion material 20, the usage pattern as an interference packing material is mentioned, for example. Since the soft expanded body 24 is integrally formed by rotational molding and has a very high degree of freedom in shape, an interference packing material that matches the shape of the packaged object can be formed.
In this case, when packing an object to be packed, air is injected from the valve structure 10 to expand the soft expanded material 20 and used as an interference packing material. Further, when the packaging is unpacked, the air in the internal space R of the soft inflatable product 20 can be exhausted from the valve structure 10 and folded down to a small size, so that the storage space can be used effectively. Furthermore, the soft expanded material 20 folded small is returned to the shipping source (returnable), and the returned soft expanding material 20 can be expanded again and reused (reused) as an interference packing material.

This makes it possible to use resources more effectively by re-use than interference packing materials that have been finely divided and discarded as non-combustible waste after unpacking. So it also helps protect the environment.
Further, since the valve portion 14 of the valve structure 10 is housed in the soft expanded body 24, the valve portion 14 is damaged even if the surface of the soft expanded material 20 is rubbed violently in repeated use processes. Thus, there is no leakage of airtightness, and the use as an interference packing material can be ensured.
Furthermore, since the valve part 14 can be opened and closed without touching the valve part 14, the valve part 14 can be used even when air is repeatedly injected and discharged due to repeated use. Thus, the airtightness of the soft expanded material 20 can be maintained without deteriorating the function of.

  In addition, it is a case where the soft expansion | swelling material main body 24 is integrally formed by shaping | molding methods other than rotation shaping | molding, Comprising: The valve structure 10 by this invention is applicable.

The shape of the valve structure by Example 1 with which the soft expansion body main body was equipped is shown, (a) is the side view, (b) is sectional drawing of a part of valve structure and a soft expansion body, (c ) Is a view of the valve structure as viewed from one end side. The state which inserted the nozzle 40 in the valve main body 11 of the valve structure 10 by Example 1 with which the soft expansion body main body was equipped is shown, (a) is sectional drawing at the time of nozzle 40 insertion, (b) is the nozzle 40 guiding. (C) is sectional drawing in which the valve structure 10 shows a valve opening tongue state. The shape of the valve structure by Example 2 with which the soft expansion body main body was equipped is shown, (a) is the side view, (b) is sectional drawing of a part of valve structure and a soft expansion body, (c ) Is a view of the valve structure as viewed from one end side. The valve part of the valve structure by Example 2 with which the soft expansion body main body was equipped is shown in the valve open state, (a) is sectional drawing of a part of valve structure and a soft expansion body, (b) is a valve structure (C) is sectional drawing by the AA line of (a). It is sectional drawing which shows the other fitting form of a valve structure and a soft expansion | swelling material main body. It is sectional drawing which shows the other form of the cylinder part of a valve structure. It is explanatory drawing which shows the other form of a projection part. It is a perspective view which shows the relationship between a valve structure and a soft expansion | swelling material main body. The perspective view which showed an example of the usage form of a soft expansion thing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Valve structure 11 Valve main body 12 One end 12a The outer surface 13 of one end The other end 20 Soft expanded material 24 Soft expanded material main body 30 Projection part S Internal space R of valve structure R Inside space of soft expanded material

Claims (10)

The soft inflatable body having a predetermined internal space is fixed to the soft inflatable body to form a soft inflatable body, and a valve portion is provided in the internal space of the soft inflatable body to keep the internal space airtight. A valve structure capable of injecting and discharging gas,
A cylindrical valve body having one end closed at a predetermined thickness and the other end opened;
Disposed on the other end side of the outer peripheral surface of the valve body, and a fixing unit for fixing with the flexible expansion material body,
Cut across the inner surface of the inner space side of the valve body from the outer surface to the thickness of one end of the occluded segment of said one end, and a valve portion where the one of the opposing surfaces of the notch movably formed in the length direction of said valve body,
Includes a raised portion that protrudes toward the inner space on one side of the incision,
When the raised portion is pushed in the length direction of the valve body, the one facing surface where the notch of the valve portion is in close contact moves, and the outer surface side space of the closed portion and the inner space of the valve body communicate with each other. Valve structure.   2. The valve structure according to claim 1, wherein the inner peripheral surface on the other end side of the raised portion of the valve main body is provided with a protruding portion that bulges from the inner peripheral surface into the internal space.   The valve structure according to claim 1 or 2, wherein the cut is obliquely cut from the outer peripheral side of the outer surface of one end toward the center side of the inner surface of the valve body on the inner space side. The soft inflatable body having a predetermined internal space is fixed to the soft inflatable body to form a soft inflatable body, and a valve portion is provided in the internal space of the soft inflatable body to keep the internal space airtight. A valve structure capable of injecting and discharging gas,
A cylindrical valve body having one end closed at a predetermined thickness and the other end opened;
Disposed on the other end side of the outer peripheral surface of the valve body, and a fixing unit for fixing with the flexible expansion material body,
Cut across the inner surface of the inner space side of the valve body and the thickness of the occluded segment of said one end from the outer surface of the one end, the valve portion movably formed in a direction in which a pair of opposing surfaces of the notch is perpendicular to the longitudinal direction of the valve body When,
Providing a protrusion that bulges from the inner peripheral surface of the internal space to the internal space,
A valve structure characterized in that when the protrusions are pushed toward the outer peripheral surface, a pair of opposed surfaces in close contact with the cut of the valve portion are moved so that the outer surface side space of the closed portion and the inner space of the valve body communicate with each other. .   The valve structure according to any one of claims 2 to 4, wherein a plurality of protrusions are provided at predetermined intervals in the circumferential direction of the inner peripheral surface of the internal space.   The valve structure according to any one of claims 2 to 4, wherein the protrusion is provided continuously in the circumferential direction of the inner peripheral surface of the internal space. The adhering portion is characterized in that a collar portion for locking the valve structure to the soft expanded body is provided from the outer peripheral edge of the adhering portion and continuously in the circumferential direction of the outer peripheral surface of the valve main body. The valve structure according to any one of claims 1 to 6. The fixing portion has a locking portion for locking the valve structure to the soft expanded body, has a predetermined interval from the other end of the valve body in one end direction, and extends from the outer peripheral surface of the valve main body. The valve structure according to any one of claims 1 to 7, wherein the valve structure is provided continuously in a circumferential direction. The soft expanded article has a hole portion penetrating the inner and outer surfaces, and the fixing portion according to any one of claims 1 to 8 is fitted into the hole portion. Soft inflatable body is
The soft expanded product according to claim 9, wherein the soft expanded product is integrally formed by rotational molding.

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