JPH0979401A - Air charging and discharging device for air chamber of air membrane structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely connect or remove a hose from a valve and prevent an exclusive adapter from loss at the time of settlement on withdrawal of an air tent by making a plate piece protrusion open a check valve to charge or discharge air in an air chamber at the time of coupling with male and female couplers. SOLUTION: A male coupler 12 is formed with a groove 11b in the outer periphery of the center part tip side for engaging a steel ball 11a of a female coupler 11 and a plurarity of plate piece protrusions 12a are formed at the tip part and a hose nozzle is formed at the tip to fix a hose 9 with a hose band 10. When the male coupler 12 is inserted into the female coupler 11, the steel ball 11a of the female coupler 11 is engaged with the groove 11b formed on the outer periphery of the male coupler 12, connected and fixed for communication and the plate piece protrusion 12a at the tip part pushes and opens a check valve 6 penetrating an air hole 5a of a valve 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for charging and exhausting air in an air chamber of an air film structure such as an air tent.

[0002]

2. Description of the Related Art Conventionally, when constructing or withdrawing an air film structure such as an air tent, as shown in FIGS. 1 and 2, valves 5 to caps 7 provided in each air chamber 1 of the air tent are used. After removing the, the adapter 5 for the valve 5
3 is inserted, the needle 13a provided on the end face thereof is pushed through the air hole 5a of the valve 5 to open the check valve 6 made of a rubber disc, and then the hose band 10 is attached to one end of the hose.
The hose nozzle 12 fixed by the is fixed to the valve 5 with the cap nut 11, and the other end of the hose 9 is sequentially connected to the inlets of the distributor A, the hose B, and the blower C, and the attached power source or the generator D, etc. The air blower C or the exhaust device driven by the electric power is used to fill or exhaust the air in the air chamber. When charging or exhausting is completed, the hose 9 is unfastened by removing the cap nut 11 from the valve 5, the dedicated adapter 13 is pulled out from the valve 5, and the cap 7 is attached to the head of the valve 5,
In the case of withdrawal, the air tent was folded and stored. Moreover, the dedicated adapter 13 was stored separately.

However, in such a conventional charging / exhaust device, (1) the dedicated adapter must be inserted into or removed from each valve in each air chamber, so that the adapter must be inserted into and removed from many air chamber valves. Needed a lot of time. In particular, when the dedicated adapter was fitted into the valve, it was easy for foreign matter such as sand and fiber pieces to enter the gap between them, and if it did, it took a considerable amount of time to remove them. At the same time, it often happens that the inner peripheral surface of the valve or the adapter needle is damaged when the dedicated adapter is attached or detached. In addition, (2) the dedicated adapter is a separate component, so it may be lost during storage,
In some cases, there was a shortage and the work was hindered. Furthermore, (3) since the valve and cap nut are of screw connection type, it takes a lot of time to install the hose by rotating the cap nut, and it is considerably inconvenient to install the hose especially in an emergency night work. Also occurred. Also, if the hose and valve were not connected properly, air leakage occurred.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and when connecting or disconnecting a hose to or from a bubble in an air chamber when setting up or withdrawing an air tent, the hose is used. An object of the present invention is to provide a charge / exhaust device for air in a room air of an air film structure, which can be easily and surely connected to or disconnected from a valve and can prevent loss of a dedicated adapter.

[0005]

That is, the present invention provides:
When charging or exhausting the air in the air chamber of an air film structure such as an air tent, a female coupler is attached to the valve provided in the air chamber of the structure, and a flow in which the charging / exhaust hose is fixed to this female coupler. In an air chamber filling / exhausting device of an air film structure for inserting or fitting a male coupler having a passage opening / closing mechanism to fill or exhaust air in the air chamber, a plurality of air holes are provided at the bottom of the valve. A check valve is provided on the lower surface of the male coupler, and a plurality of plate-shaped projections is provided on the other end of the male coupler so that the plate-shaped projection pushes the check valve open when the male and female couplers are fitted together. The gist of the invention is a charging / discharging device for an air film structure, which is capable of charging or discharging the air in the air chamber.

[0006]

According to the charging / exhausting device of the present invention, in filling or exhausting the air in the air chamber of the air tent, after removing the cap of the valve provided in the air chamber, the head of the valve is removed. Attach the female coupler, and then insert the male coupler to which the charging / exhaust hose is fixed into the female coupler, and if fitted, the plate-like projection at the tip of the male coupler pushes the check valve of the valve open ( 1) If the end of the charge / exhaust hose is connected to a blower, the air chamber is charged through the hose, and (2) If the charge / exhaust hose is connected to an exhaust device, the air inside the chamber is exhausted and the hose is closed. After that, it is discharged to the atmosphere from the exhaust device. (3) When the filling operation is finished and the male coupler is removed, the check valve returns to the original position and closes the flow path, and the air chamber maintains the filled state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A charging / exhaust device according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram showing a structure of a member and a device for performing charging / discharging work using a conventional technique, and FIG. 2 is a charging / discharging device including the valve, the dedicated adapter, the cap nut, the hose nozzle and the hose of FIG. FIG. 3 is a sectional view of a main part of the apparatus, FIG. 3 is a sectional view taken along the line AA of FIG. 2 showing a positional relationship between a dedicated adapter needle and a valve air hole, and FIG. Fig. 5 is a cross-sectional view of the main parts showing a state where the female couplers are fitted together and the plate piece projection pushes the check valve open. Fig. 5 shows the positional relationship between the male plate coupler piece projection and the valve air hole. FIG. 4 is a sectional view taken along the line BB in FIG. 4, FIG. 6 is a sectional view showing a state in which a sheath cover is fitted on the plate-like projection at the tip of the male coupler during storage, and FIG. 7 is a groove and a coil spring. -A diagram showing an example of a one-touch connection structure other than the connection method of a male coupler and a female coupler by a combination of steel balls.

As shown in FIGS. 4 to 5, the device for charging and exhausting air in the air chamber of the air film structure according to the present invention includes a valve 5 provided in the air chamber 1 of the air film structure such as an air tent. The female coupler 11 is attached, and the male coupler 12 fixed to the tip of the charging / exhaust hose 9 is inserted into the female coupler, and the steel ball 11a pushed by the coil spring of the body portion of the female coupler 11 is inserted into the male coupler 12. At the same time as fitting and fitting into the groove 12b on the outer peripheral surface, the plate-like projection 12a at the tip of the male coupler 12 penetrates the air hole 5a of the valve 5 and pushes the check valve 6 open. If the end of the charge / exhaust hose 9 is connected to the blower C, the air chamber is charged through the hose 9, and (2) if the charge / exhaust hose 9 is connected to the exhaust device C, the air in the air chamber is exhausted, It is discharged from the exhaust device C to the atmosphere through the hose 9. That. (3) When the filling operation is completed and the male coupler 12 is removed, the check valve 6 returns to its original position to close the flow path, and the air chamber 1 is kept filled. It has the function of.

As shown in FIGS. 4 and 5, the valve 5 is provided with a plurality of charge / exhaust air holes 5a at the bottom thereof, and a rubber or the like for preventing outflow of injected air is provided on the lower side surface thereof. A disc-shaped check valve 6 made of a repulsive elastic material is provided, and is composed of a valve base rubber 2, a valve base 3 and a tightening nut 4 provided on an air chamber wall 1 made of a fiber reinforcing layer and a rubber layer. It is attached to the valve mounting part. As shown in FIG. 4, the cap 7 is fixed to the neck of the valve 5 via a cap band 8, and is covered on the head of the valve 5 when the charging / exhaust device is not used,
Protect the valve part.

As the female coupler 11, a known one is used. As shown in FIG. 4, a pressing mechanism for pressing the steel ball 11a, which is pressed by the coil spring 11b in the central axis direction, is provided at three to six circumferential positions in the central body portion of the length of the cylindrical member. Then, connection threads are formed on both ends thereof. The connecting thread portion at this one end is inserted from the head portion of the valve 5 so that the female coupler 11 is mounted on the valve 5.

The male coupler 12 is, as shown in FIG.
A known art is used in which a groove 11b into which the steel ball 11a of the female coupler 11 is fitted is formed on the outer peripheral surface near the tip of the central portion, and a plurality of plate-like projections 12 are provided at the tip.
a is provided, and a hose nozzle is formed at the other end so that the hose 9 can be fixed with the hose band 10. When the male coupler 12 is inserted into the female coupler 11, the steel ball 11a of the female coupler 11 is fitted into the groove 12b provided on the outer peripheral surface of the female coupler 11, fitted, connected and fixed, and is located at the tip thereof. The plate-shaped projection 12a is the valve 5
The check valve 6 is pushed open by passing through the air hole 5a. In addition, the plate-shaped projection 12a of this male coupler 12
As shown in FIG. 6, when not in use, the sheath-shaped cover 14 is fitted so as to be protected.

The method of connecting and fixing the male coupler 12 to the female coupler 11 with one touch is shown in FIG.
In addition to the combination of 2b and the steel ball 11a and the coil spring 11b, a member having a structure capable of easily and securely connecting and fixing the male coupler 12 to the female coupler 11 can be appropriately used. For example, as shown in FIG. 7 (a), the male coupler 1
A pair of locking levers 15 symmetrically projecting outward are provided on the outer peripheral surface of 2, and a guide guide groove 16 of the lever 15 and a hook for locking the lever 15 are provided on the outer peripheral surface of the female coupler 11 on the hose connection side. A member 17 is provided to fix the male coupler 12 to the female coupler 11, or, as shown in FIG. 2B, a pair of female couplers 11 are symmetrical about the central axis on the outer peripheral surface of the end of the hose connection side of the female coupler 11. Bearing pedestal 1
8 is provided, the lock pin member 19 is fixed to the shaft 20 by the shaft 20, and a hole 21 into which the lock pin member 19 is fitted is provided on the outer peripheral surface of the male coupler 12 on the hose connection side. After inserting into the female coupler 11,
When the lock pin member 19 that has been housed in the opposite position is pushed into the hole 21 of the male coupler 12, the arm portion of the lock pin member 19 is fixed in motion by fitting (not shown) at the shaft 20 portion, Examples thereof include a structure in which the lock pin member 19 is fixed.

[0013]

As described above, according to the air chamber air charging / exhausting device of the air film structure of the present invention, the plate-like projection at the tip of the coupler passing through the check valve provided in the valve is used. By adopting a structure that pushes open from the rear direction to open the fluid flow path (1) If the end of the charge / exhaust hose is connected to a blower, the air chamber can be charged, and (2) charge / exhaust If the hose is connected to an exhaust device, the air in the air chamber can be exhausted. (3) When the charging operation is completed and the male coupler is removed from the female coupler, the check valve returns to its original state. It closes the flow path and has many functions such as keeping the air chamber filled. In addition, the following points, which were the drawbacks of the prior art, could be improved. That is, (4) A plate piece-like projection is provided at the tip of the male coupler, and the conventional separately-dedicated dedicated adapter is combined with the male coupler to form an integrated structure. The troublesome work of inserting into or removing from each valve in each air chamber,
In addition, there is no problem due to the loss of the dedicated adapter (corresponding to the plate-shaped projection of the present invention) that is not used or stored. Further, when the plate piece-like projection is not used, a sheath-like cover is fitted,
Since it can be protected, it is possible to prevent the conventional damage during storage. (5) By adopting the male coupler, a groove is formed on the outer peripheral surface near the tip of the central portion, and at the same time, the body of the female coupler is provided with a pressing mechanism composed of a steel ball and a coil spring. Since it is (known), before exhausting work, hold the male coupler at the end of the hose, simply insert it into the female coupler, and insert the female ball of the female coupler into the groove, that is, secure the hose with one touch. In addition, it can now be easily connected and fixed to a female coupler. That is, the multi-step cumbersome work of inserting the special adapter into the valve and then attaching the hose nozzle portion to the valve by rotating the cap nut is simplified as in the prior art. In addition, since the hose can be attached to the female coupler with a one-touch method, the installation work especially at night construction has been significantly improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of members and devices for performing charging / discharging work using a conventional technique.

FIG. 2 is a cross-sectional view of a main part of a charge / exhaust device including the valve of FIG. 1, a dedicated adapter, a cap nut, a hose nozzle, and a hose.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a cross-sectional view of essential parts showing a state in which both the male and female couplers of the charging / exhausting device of the present invention are fitted and the plate-like projection pushes the check valve open.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a sectional view of a plate-like projection in a protected state during storage.

FIG. 7 is a diagram showing an example of a one-touch connection system of a male coupler / female coupler other than a combination of a groove, a coil spring, and a steel ball.

[Explanation of symbols]

 1 Air chamber 2 Valve base rubber 3 Valve base 4 Tightening nut 5 Valve 5a Air hole 6 Check valve 7 Cap 8 Cap band 9 Hose 10 Hose band 11 Female coupler (tightening nut in the prior art) 11a Steel ball 11b Coil spring 12 Male Coupler (Hose Nozzle in Conventional Technology) 12a Plate Piece-like Protrusion 12b Groove 13 Special Adapter 13a Adapter Needle 14 Cover 15 Lever 16 Guide Guide Notch 17 Hook-like Member 18 Bearing Pedestal 19 Lock Pin Member 20 Shaft 21 Hole

Claims (1)

[Claims] 1. A female coupler is attached to a valve provided in an air chamber of an air film structure, and a male coupler having a flow passage opening / closing mechanism having a charging / exhausting hose fixed to one end is fitted to the female coupler. In a charging / discharging device for an air chamber of an air film structure for charging or exhausting air in the chamber, a plurality of air holes are provided at the bottom of the valve, and a check valve is provided on the back surface thereof. A plurality of plate-like projections may be provided on the other end of the coupler, and when the male and female couplers are fitted together, the plate-like projections open the check valve to fill or exhaust the air in the chamber. A device for exhausting air in an air-chamber structure having an air film structure.