JPH0740130Y2 - Valve device for air injection - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air injecting valve device for injecting air into an aquaculture air float, an air mattress, etc. (hereinafter referred to as an air float) , and more particularly, it is formed on a valve body. was formed to allow air circulation to the projecting portion, its outside is coated with an elastic rubber tube, the air can be easily injected, the leakage of the injected air two
The present invention relates to an air injection valve device that can be reliably prevented by a heavy sealing structure .

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, such a valve device has an outer member (1) having a screw formed inside and attached to the inside of an air float (A), and the outer member (1). ), The inner member (2) having a large number of through holes (2a) formed therein and the inner member (2) is inserted into the inner member (2) to close and open the through hole (2a). And a rubber plate (3) for air injection, the rubber plate (3) is indicated by an alternate long and short dash line by the pressure of the air when the air flowing through the inner member (2) during the air injection flows through the through hole (2a). The air is injected by being bent like this.

[0003]

However, in the conventional technique as described above, it is difficult to maintain a predetermined air pressure because the air of the air float leaks through the side portion of the rubber plate after the air is injected. Therefore, there is a problem that air must be re-injected as needed, and in particular, when the rubber plate is damaged by a foreign substance or the like, air cannot be injected.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an air injection valve device capable of reliably preventing air leakage and always maintaining an appropriate air pressure. is there.

[0005]

In order to achieve the above object, an air injection valve device according to the present invention includes an air float and the like.
The air injection valve device for injecting air into the
The outer peripheral surface of the air floater (A) etc. by heat fusion.
A short tubular connector (10) having an attachment flange (11),
The screw part (14) provided on the inner surface of the outer end of the connector (10).
It is mounted by screwing on a) and has a protrusion (15) at one end on the inside.
Before but protruding from the valve body (16), said valves of (16)
The rubber chute tightly covered and attached to the outer peripheral surface of the protrusion (15).
Tube (19) and outer peripheral surface of the outer end of the connector (10)
With a blind lid (20) attached by screwing to the screw part (14b) of
The valve body (16) has one outer surface
And the rubber tube (19) of the protrusion (15) is covered.
When the air passage (17) communicating with the outer peripheral surface is formed
Both have a rubber tube (19) on the outer peripheral surface of the protrusion (15).
The locking protrusion (18) is provided to prevent the
The inner end and the outer end of the connector (10) each have a first end.
(12) and the second end (13) are formed in a stepped shape,
An annular crimping ridge (12a
) (13a) and these crimp ridges (12a
) (13a), the end portions (1
2) Opposing surfaces of (13), valve body (16) and blind lid (20)
No packing (21a) (21b) is provided between
The present invention is characterized in that the pressure of air can be constantly maintained by preventing leakage of injected air.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the accompanying drawings.

In FIGS. 2 and 3, reference numeral (10) is a length
1 shows a short tubular connector in which a flange (11) that is heat-welded to the inner surface of an air floater (A) or the like is integrally formed on the outer peripheral surface of an intermediate portion in the direction .

The connecting tool (10) is provided at the middle portion in the longitudinal direction.
A step-like first end (12) is provided on the inner surface, and a second step is provided on the outer end surface .
The end portion (13) is formed stepwise, and the second end portion (13)
Threaded portion on the end portion inner and outer peripheral surface of the outer residing of (14a) (14b
) Are formed respectively, and the first and second ends (12, 13) are cut off.
The crimping protrusions (12a) (13a) each having a triangular shape are provided so as to project. A through hole (10a) is formed below the screw portion (14a) so that air can be discharged.

On the other hand, the threaded portion (14a) formed inside the connector (10) has a protruding portion (15) at approximately the center of one inner end.
The valve body (16) having the above is screwed, and the air passage (17) is formed inside the protrusion (15) so that the air can flow. One end of the air passage (17) is located outside the valve body (16) .
One end is communicated with a recess (16a) formed in the central portion, and the other end is communicated with the outer peripheral surface of the protrusion (15).

Further, when air is injected into the air float (A) on the outer peripheral surface of the protrusion (15), it is expanded to form an air injection passage and a predetermined pressure is applied to the air float (A). At the end of the air passage (7), the elastic rubber tube (19) that is contracted when air is injected in the air is tightly covered and that prevents air leakage in the air float (A). Block
Has been made . A locking projection (18) is provided on the outer peripheral surface of the protrusion (15) so as to prevent the rubber tube (19) from escaping when air is injected into the air float (A).

Further, in the screw portion formed on the outside of the coupling (10) (14b), blanking plates for preventing intrusion of foreign matter such as dust (20) is mounted. Furthermore, the opposing sides of the crimping protrusions (12a) (13a) formed on the connector (10), that is, the first end face (12) and the second end face (13) and the bar
Between each opposing face of the blanking body (16) and the blind cover (20), in the leakage of the injected internal air is prevented, to maintain a constant air pressure packing (21a) (21b) is the Crimp bump
It is provided in such a manner that it is crimped to the strips (12a) (13d) .

[0012]

Next, the operation of the present invention having the above construction will be described.

First, when air is injected into the valve body (16) through the air injection means (not shown) with the lid (20) separated from the connecting tool (10), the air passage (17). Since the air that has flowed in applies pressure to the rubber tube (19), the rubber tube is expanded as indicated by the alternate long and short dash line in FIG. 3, and the outer peripheral surface of the protrusion (15) and the rubber tube (19) are expanded.
Is an air passage between an inner surface formed, it is possible to air injection into the inner portion, such as an air浮具(A).

Furthermore, when the air injection to have a constant air pressure in the inner portion, such as an air浮具(A) is completed, the rubber tube (19) is in close contact with the outer peripheral surface of the projecting portion (15) by its elasticity since the air passage (17) is closed Te, air internal, such as an air浮具(a) is not leaking.

When the lid (20) is tightened to the screw portion (14b) of the connecting tool (10) after the air injection is completed, foreign matter is prevented from entering the valve body (16) from the outside and packing ( 21a) (21b) and the crimping protrusions (12a) (13a) formed on the first and second end portions (12) (13) are in close contact with each other to maintain airtightness, so that the air float (A), etc. air leakage of the inner portion is prevented, always constant air pressure is maintained.

[0016] On the other hand, when it is intended to discharge the air in the inner portion such as an air浮具(A), the lid (20) and the valve body (16)
When separated from the connector (10), it is easily discharged through the inner through hole (10a) of the connector (10).

[0017]

As described above, according to the present invention, the air
Air injection valve for injecting air into the float
In the equipment, the outer surface is heat-fused to the inner surface of the air float (A)
Short tubular connector with mounting flange (11) to be worn
(10) and provided on the inner surface of the outer end of the connector (10)
It is attached by screwing it to the screw part (14a),
A valve body (16) provided with a protruding portion (15), and the valve body (16)
Tightly covering the outer peripheral surface of the protruding part (15) of the body (16)
Of the separated rubber tube (19) and the connecting tool (10)
Mounted by screwing onto the screw part (14b) on the outer peripheral surface of the end
It consists of a blind lid (20) and the valve body (16) has
The rubber tube (1
Air passage (17) communicating with the outer peripheral surface covered with 9)
The air float (A)
Easy by heat-sealing the flange (11)
In addition to being able to attach securely,
At the time of injection , remove the valve with the blind lid (20) removed.
Connect air injection means to the body (16) and send compressed air
This causes the pressure to expand the rubber tube (19).
The air passage that is stretched and communicates with the inside of the air float (A) etc.
It is formed and air can be easily injected. this
At this time, a locking protrusion is provided on the outer peripheral surface of the protrusion (15) of the valve body (16).
Due to the formation of (18), the rubber tube (1
9) does not inadvertently come off.

Further, the inner surface and the outer end of the connecting tool (10).
The first end (12) and the second end (13) are stepwise
Formed on each of these ends (12) (13) respectively
-Shaped crimping protrusions (12a) (13a) are provided and these
In the mode of being crimped to the crimping ridge (12a) (13a) of
The ends (12) (13), the valve body (16) and the blind lid (2)
0) Packing (21a) (21b) between each facing surface
Since it is provided with a blind lid after air injection.
By installing (20), the air escape route
A dual sealing structure is realized to prevent air leakage reliably
It That is, the air escape route via the valve body (16) is
Closure of air passageway (17) due to elasticity of rubber tube (19)
And the packing (21a) crimped to the crimp protrusion (13a).
Due to the sealing action between the coupling (10) and the blind lid (20)
Double blockage to prevent air leakage.
It On the other hand, via the connection tool (10) and the valve body (16)
The air escape paths that are used are all crimp ridges (12a) (13a
2 pieces by packing (21a) (21b) crimped to
Due to the local sealing action, it is double blocked and air leakage is confirmed.
Actual prevention can be taken.

Therefore, for a long period of time, the inside of the air float or the like will be
The air pressure of can be held without damping,
As a result, the maintenance work load can be reduced.

[Brief description of drawings]

1 is a longitudinal sectional view of a conventional air injection valve device.

FIG. 2 is a perspective view of an air injection valve device of the present invention in an exploded state .

FIG. 3 is an assembled state of the air injection valve device of the present invention.
It is a longitudinal sectional view.

[Explanation of symbols]

 10 ... Coupling 12 ... First end 13 ... Second end 12a ... Crimping projection 13a ... Crimping projection 15 ... Projection 16 ... Valve body 17 ... Air passage 18 ... Locking projection 19 ... Rubber tube 20 ... Lid 21a… Packing 21b… Packing A… Air float

Claims (1)

[Scope of utility model registration request] 1. A air injection valve arrangement for injecting air into the inner portion, such as an air浮具, mounting that is heat sealed to the inner surface, such as an air浮具(A) on the outer peripheral surface
A short tubular connector (10) having a flange (11);
Screw part (14a) provided on the inner surface of the outer end of the tie (10)
It is mounted by screwing it on and the protruding part (15)
The valve body (16) provided and the protrusion of the valve body (16).
A rubber tube tightly covered and attached to the outer peripheral surface of the projecting part (15).
Tab (19) and the outer peripheral surface of the outer end of the connector (10).
From the blind lid (20) that is screwed and attached to the section (14b)
The valve body (16) has the outer end surface and the protrusion.
Outer peripheral surface of the part (15) covered with the rubber tube (19)
An air passageway (17) communicating with the rubber tube (19) is formed on the outer peripheral surface of the protrusion (15).
Locking protrusions (18) for preventing the above-mentioned connection , and further, the inner surface and the outer end of the connecting tool (10) are respectively provided with a first protrusion .
The first end (12) and the second end (13) are formed in a stepped shape,
An annular crimping ridge is provided at each of these ends (12) (13).
(12a) and (13a) are provided, and these crimping protrusions are provided.
(12a) (13a) In the mode of being crimped, each end
(12) (13), valve body (16) and blind lid (20) facing each other
Packing (21a) (21b) is provided between the face part
A valve device for injecting air, characterized in that