JPH0747279Y2 - Exhaust valve for scuba diving - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an exhaust valve for scuba diving, and more particularly to a scuba diving which allows both manual and automatic exhaust of the exhaust valve and only manual exhaust. Regarding the exhaust valve.

[0002]

2. Description of the Related Art As is well known, scuba diving is widely known as a relatively easy marine sport and an underwater observation means. When performing the scuba diving, the diver wears a dry suit or a wet suit to protect the body.

Further, in order to facilitate the action in water, an appropriate buoyancy is obtained. In order to obtain the buoyancy, for example, air is blown into the dry suit, or a buoyancy jacket is worn and air is blown into the dry suit.

The air is sent into the dry suit or the buoyancy jacket by introducing compressed air from a compressed air tank carrying a diver through a pressure reducing valve and an intermediate pressure hose.

In this way, the dry suit and the buoyancy jacket are inflated by sending compressed air to obtain an appropriate buoyancy, but when diving deeper, the buoyancy becomes an obstacle, Buoyancy needs to be reduced.

In order to reduce the buoyancy as described above, the air sent into the dry suit or the buoyancy jacket may be discharged. Therefore, in order to discharge air, a device called an exhaust valve is attached to the dry suit and the buoyancy jacket.

Various types of the exhaust valve have been put into practical use, but they are roughly classified into a manual type and an automatic type. The above-mentioned manual type exhaust valve is disclosed in, for example, Japanese Patent Laid-Open No. 01-127.
It is disclosed in Japanese Patent Laid-Open No. 484 and Japanese Patent Laid-Open No. 61-180074. The manual type includes a button called an exhaust button, and when the exhaust button is pressed, the air in the dry suit or the buoyancy jacket is exhausted regardless of the diving depth.

Further, the automatic type exhaust valve is constructed so as to obtain a constant buoyancy according to the diving depth, and the pressure difference between the air pressure and the water pressure in the dry suit or the buoyancy jacket is calculated. It is configured so that it can be kept constant, and the internal air is automatically exhausted when the pressure difference becomes large.

The above-mentioned manual type exhaust valve and automatic type exhaust valve may be used individually, but in consideration of functionality and safety, both manual type and automatic type functions are required. It is preferable to make it available.

Therefore, conventionally, both a manual type exhaust valve and an automatic type exhaust valve have been installed in a dry suit and a buoyancy jacket.

[0011]

However, in the prior art, a manual type exhaust valve and an automatic type exhaust valve were independently mounted, so that the following problems to be solved occurred. That is, since the automatic type exhaust valve and the automatic type exhaust valve are manufactured separately from each other, there is a problem that the number of parts is increased and thus the cost is increased.

When the exhaust valve fails,
Since it has to be operated for each of the manual type and the automatic type, not only is the switching operation cumbersome and troublesome, but it is also very dangerous because it is prone to erroneous operation, and there are major problems in safety and functionality. It was

In view of the above-mentioned problems, the present invention is for scuba diving in which the number of parts is small, the switching operation is easy, both manual and automatic exhaust are possible, and only manual exhaust is possible. The purpose is to be able to provide an exhaust valve that opens.

[0014]

The exhaust valve for scuba diving according to the present invention is an exhaust valve for scuba diving used for exhausting air in a dry suit or a buoyancy jacket. When the inside of the dry suit or the inside of the buoyancy jacket is the air side A and the outside is the underwater side B, the valve seat 5 is provided on the air side A of the diaphragm 4 arranged in the exhaust valve body 1. A valve body 6 is provided on the underwater side B, and the valve seat 5 is configured to be movable in conjunction with a piston 8 connected to an exhaust button 7. When the button 7 is manually pushed, the gap between the valve seat 5 and the valve body 6 is opened, and the valve seat 5
The end edge 9 of the diaphragm 4 that is in close contact with the valve body 6 is configured to be separated from the valve seat 5 so that air is discharged from the air side A toward the underwater side B, and the valve body 6
Is pressed against the diaphragm 4 side by the spring 10 with a predetermined pressure, so that the pressure difference between the air side A and the underwater side B is kept constant,
When the diving depth changes and the pressure difference between the air side A and the underwater side B increases, the valve body 6 is automatically pushed down to the underwater side B, and the distance between the valve seat 5 and the valve body 6 is increased. Is opened, and the edge 9 of the diaphragm 4 that is in close contact with the valve seat 5 is configured to separate from the valve seat 5 and exhaust air from the air side A toward the underwater side B. Further, when the switching dial 11 is arranged around the exhaust button 7 and the cam 12a provided on the switching dial 11 and the cam 12b provided on the valve body 6 correspond to each other, it is manually operated. Only exhaust is possible, and also
The exhaust valve in scuba diving is characterized in that both manual exhaust and automatic exhaust are possible when the cam 12a and the cam 12b do not correspond to each other.

[0015]

Since the present invention has the above-mentioned technical means, the valve seat 5 on the air side A and the valve body 6 on the underwater side B are provided with the diaphragm 4 disposed in the body 1 of the exhaust valve interposed therebetween.
Operate independently of each other, and the valve seat 5 is interlocked with the exhaust button 7, so that the air in the dry suit or the buoyancy jacket can be exhausted by manually pushing down the exhaust button, and the valve seat 6 Is pressed against the diaphragm 4 side (air side A) with a predetermined pressure by the spring 10, so that when the pressure difference between the air side A and the underwater side B becomes large, the valve body 6 is automatically moved. Since it is pushed down to the underwater side B to perform automatic evacuation, both manual and automatic evacuation are possible with a single mechanism in a single case.

Further, when the switching dial 11 is arranged around the exhaust button 7 and the cam 12a provided on the switching dial 11 and the cam 12b provided on the valve body 6 correspond to each other. Is configured so that only manual exhaust can be performed, and both manual exhaust and automatic exhaust can be performed when the cam 12a and the cam 12b do not correspond to each other. By simply turning the dial 11, it is possible to prevent the automatic evacuation.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an exhaust valve for scuba diving according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the exhaust valve for scuba diving according to the present invention is
A diaphragm 4 is arranged in an internal space of a main body 1 composed of a base 2 and a cap 3.

Then, with the diaphragm 4 inside,
Air side A inside the dry suit or inside the buoyancy jacket
(Hereinafter, simply referred to as the air side A) and an underwater side B (hereinafter, simply referred to as the underwater side B) inside the dry suit or outside the buoyancy jacket are partitioned, and the air side A has a valve. A seat 5 is provided, and a valve body 6 is provided on the underwater side B.

The valve seat 5 is integrally formed with a piston 8 connected to the exhaust button 7, and above the piston 8.
That is, the edge 9 of the diaphragm 4 is in close contact with the underwater side B.

The diaphragm 4 is fixed below the piston 8 by a push nut 14. A valve body 6 is provided above the diaphragm 4, that is, on the underwater side B so as to be vertically movable with respect to the piston 8. The first spring 10 causes the diaphragm 4 to move at a predetermined pressure. Is pressed to the air side A.

The piston 8 is provided slidably with respect to the base 2 and is pressed toward the underwater side B by the second spring 13. In addition, the periphery of the valve seat 5 formed integrally with the piston 8 and the base 2
A seal 16 is provided between the inner wall of the exhaust valve and the inner wall of the exhaust valve of the present embodiment, and an inner valve seat 15 is provided below the diaphragm 4. It is confidential.

The exhaust button 7 is connected to the piston 8 by a screw 17, and a button cap 18 is provided above the screw 17. A switching dial 11 is provided around the exhaust button 7 to switch the operating state of the exhaust valve, that is, to switch between manual and automatic or only automatic.

A cam 12a is attached to the lower portion of the switching dial 11, and a cam 12b is attached to the valve body 6, so that the cam 12a
a and the cam 12b correspond to each other.

Then, the dry suit and the fabric 21 of the buoyancy jacket are sandwiched by the back cap 19 screwed into the base 2 and the screw portion 20 of the base 2, and the exhaust valve of this embodiment having the above-mentioned structure is installed in the dry suit. I am trying to attach it to a buoyancy jacket.

Next, the operation of the exhaust valve in the scuba diving according to this embodiment having the above-mentioned structure will be described. First, as shown in FIG. 1, the switching dial 11 is turned counterclockwise to the AUTO position.

At this time, the cam 1 of the switching dial 11
2a (not shown) does not correspond to the cam 12b of the valve body 6 as shown in FIG. In the case of the exhaust valve for scuba diving according to the present embodiment, manual and automatic exhaust are performed in this state.

First, the automatic exhaust will be described. For example, send air into a drysuit or buoyancy jacket to balance underwater as the diver dive. At this time, the air in the dry suit and the buoyancy jacket is sent from the compressed air tank via the pressure reducing valve and the medium pressure pipe (neither is shown) and has a predetermined pressure. .

The pressure is adjusted by the strength of the first spring 10 pressing the valve body 6 of the exhaust valve. That is, when the diver rises from a certain depth, the water pressure applied to the valve body 6 of the exhaust valve decreases, whereby the air in the dry suit or the buoyancy jacket expands and the buoyancy increases.

In order to adjust the buoyancy increased as described above, the air in the dry suit or the buoyancy jacket is exhausted to the outside as follows. That is,
Water pressure applied to the valve body 6 and first pressure for pressing the valve body 6
When the air pressure in the dry suit or in the buoyancy jacket becomes larger than the pressure obtained by adding the pressure of the spring 10 to the valve body 6, the valve body 6 moves to the underwater side B.

As a result, the gap between the valve body 6 and the valve seat 5 is widened, and the diaphragm 4 which is in close contact with the valve seat 5 is opened.
Edge 9 is separated from the valve seat 5 and moves from the air side A to the underwater side B.
Air is exhausted.

By exhausting the air in this manner, the air in the dry suit and the buoyancy jacket is reduced. The water pressure applied to the valve body 6 and the valve body 6
When the pressure obtained by adding the pressure of the first spring 10 that presses is equal, the exhaust is finished.

By exhausting the air as described above, the expansion amount of the air generated by the diver rising from the deep place to the shallow place is exhausted, and the predetermined buoyancy is maintained. Like

Contrary to the above example, when the diver dives from a shallow place to a deep place, the water pressure increases, so that the air contracts and the buoyancy decreases. In such a case, the buoyancy is increased by supplying air from the compressed air tank and sending the air into the dry suit or the buoyancy jacket.

As described above, by repeatedly exhausting the air in the dry suit or the buoyancy jacket and replenishing the air in the dry suit or the buoyancy jacket,
Since the volume of air in the dry suit or the buoyancy jacket is kept constant, the diver can freely move in the water while changing the depth.

By the way, when the diver is going to dive rapidly from a certain depth, the buoyancy is automatically adjusted as described above. Therefore, the operation of exhausting the air in the dry suit or the buoyancy jacket is not possible. Since it is not in time, inconvenience may occur.

Therefore, in such a case, manual evacuation can be performed. That is, first, the piston 8 is pushed by pressing an exhaust button (not shown) provided on the exhaust valve.
Push down.

When the piston 8 is pushed, the valve seat 5 connected to the piston 8 is pushed down, so that the gap between the valve body 6 and the valve seat 5 is opened, and the end of the diaphragm 4 which is in close contact with the valve seat 5 is opened. The edge 9 separates from the valve seat 5.

Therefore, the edge 9 of the diaphragm 4 is
Exhaust is performed from between the valve seat 5 and the valve seat 5, and as a result, the buoyancy in the dry suit or the buoyancy jacket can be rapidly reduced. Therefore, when the diver tries to dive rapidly from a certain depth, Will be able to respond well.

As shown in FIG. 3, when the switching dial 11 is turned clockwise to the LOCK position, the cam 12a of the switching dial 11 and the cam 12b of the valve body 6 are
Correspondence can be made as shown in FIG.

By doing so, the valve body 6 is prevented from moving to the underwater side B, so that the above-described automatic exhaust is not performed, and only manual exhaust is possible. This function is used when the diver tries to dive rapidly from a certain depth, that is, when the buoyancy is rapidly reduced. Further, it can be used in the case where the diver is required to obtain a larger buoyancy due to the rapid rise.

That is, as described above, the switching dial 1
When 1 is turned clockwise to the LOCK position, automatic exhaust is not possible, so even if the water pressure decreases due to the diver rising above a certain depth, the air in the dry suit or buoyancy jacket will not be exhausted. Become.

Therefore, the air pressure in the dry suit or the buoyancy jacket remains at the pressure corresponding to the water pressure at the position before the diver was raised, so the internal air expands due to the decrease in water pressure due to the diver's rise. , Greater buoyancy will be obtained and rapid climb will be possible.

At this time, it is conceivable that the body is tightly tightened due to the expansion of air, but in this case, manual evacuation can be performed, so that rapid rising can be performed while preventing excessive tightening.

As described above, the automatic and manual exhaust and the manual exhaust only can be performed by simply twisting the switching dial 11 to the left and right, and the manual exhaust can be performed by pressing the exhaust button 7. it can.

Therefore, in the case of the exhaust valve in the scuba diving according to the present embodiment, the switching operation of the exhaust function is easy, and since it is constituted by a single mechanism in a single case, the number of parts is small. It can be small.

This makes it possible to manufacture at low cost, reduce the possibility of failure, and improve safety.

In particular, in the case of the exhaust valve for scuba diving according to the present embodiment, automatic exhaust can be disabled by turning the switching dial 11 clockwise to the LOCK position. Therefore, even if the water pressure decreases due to the diver rising above a certain depth, it is possible to prevent the air in the dry suit or the buoyancy jacket from being exhausted, which is effective when rapidly ascending.

Since the automatic exhaust is disabled,
The air in the dry suit and buoyancy jacket can be stored more than usual. This function is effective, for example, when warming up on land.

It is also necessary to prevent the internal air from being automatically exhausted at a constant pressure when a negative pressure is strongly felt during diving, such as when squeezing. Will be able to.

That is, the exhaust valve in scuba diving balances the pressure at the valve position. The position of the valve changes variously depending on the posture of the diver.

Therefore, when the diver lies in the water, the internal and external pressures are balanced over the whole body. However, when the diver is upright in water, the pressure below the shoulders is negative, and in the case of automatic exhaust, the internal and external pressures cannot be balanced.

On the other hand, in the case of the exhaust valve in scuba diving according to the present embodiment, automatic exhaust cannot be performed by the cam 12a provided on the switching dial 11 and the cam 12b provided on the valve body 6. Therefore, it is possible to turn off the automatic exhaust by simply turning the switching dial 11 to the right to the LOCK position,
It can be effectively used when taking a posture in which a negative pressure is partly strongly felt in water. The arrow F in the figure indicates the flow of air during exhaust.

[0054]

As described above, according to the present invention, the valve seat 5 on the air side A and the valve body 6 on the underwater side B, which are provided so as to sandwich the diaphragm 4 disposed in the body 1 of the exhaust valve, respectively, are provided. Since it operates independently and the valve seat 5 is interlocked with the exhaust button 7, the air in the dry suit or the buoyancy jacket can be exhausted by manually pushing down the exhaust button, and the valve body 6 is Since the spring 10 presses the diaphragm 4 side (air side A) with a predetermined pressure, when the pressure difference between the air side A and the underwater side B becomes large, the valve body 6 moves toward the underwater side. As it is automatically pushed down to B, it can be automatically evacuated.
Both automatic evacuation can be performed. As a result, it is possible to provide an exhaust valve for scuba diving which has a reduced number of parts and can be manufactured at a low cost, is easy to operate, has few failures, and is excellent in safety.

Further, when the switching dial 11 is arranged around the exhaust button 7 and the cam 12a provided on the switching dial 11 and the cam 12b provided on the valve body 6 correspond to each other. Is configured so that only manual exhaust can be performed, and both manual exhaust and automatic exhaust can be performed when the cam 12a and the cam 12b do not correspond to each other. By simply turning the dial 11, automatic evacuation can be disabled. This makes it possible to prevent the internal air from being accidentally exhausted when a negative pressure is partially applied during diving.

[Brief description of drawings]

FIG. 1 is a front view of an exhaust valve in a state where both automatic exhaust and automatic exhaust are possible.

FIG. 2 is a sectional view taken along line XX ′ in FIG.

FIG. 3 is a front view of the exhaust valve in a state where only manual exhaust is possible.

FIG. 4 is a cross-sectional view taken along line Y-Y ′ of FIG.

[Explanation of symbols]

 1 Main Body 2 Base 3 Cap 4 Diaphragm 5 Valve Seat 6 Valve Body 7 Exhaust Button 8 Piston 9 End Edge 10 First Spring 11 Switching Dial 12a Cam 12b Cam

Claims (1)

[Scope of utility model registration request] 1. An exhaust valve for scuba diving used for exhausting air in a dry suit or a buoyancy jacket, wherein the exhaust valve has an air side A inside the dry suit or inside the buoyancy jacket. Further, when the outer side is the underwater side B, the valve seat 5 is provided on the air side A of the diaphragm 4 arranged in the exhaust valve body 1, and the valve body 6 is provided on the underwater side B. The valve seat 5 is configured so that it can be moved in conjunction with the piston 8 connected to the exhaust button 7. When the exhaust button 7 is manually pushed, the valve seat 5 and the valve body 6 are moved. And the end edge 9 of the diaphragm 4 that is in close contact with the valve seat 5 is separated from the valve seat 5 to move from the air side A to the underwater side B. The valve body 6 is pressed against the diaphragm 4 by the spring 10 with a predetermined pressure, so that the pressure difference between the air side A and the underwater side B is increased. Is kept constant, and when the diving depth changes and the pressure difference between the air side A and the underwater side B increases, the valve body 6 automatically moves to the underwater side B.
Is pushed down to open the gap between the valve seat 5 and the valve body 6, and the edge 9 of the diaphragm 4 that is in close contact with the valve seat 5 is closed.
Is separated from the valve seat 5 and is from the air side A to the underwater side B.
The exhaust dial 7 is configured to exhaust air, and a switching dial 11 is arranged around the exhaust button 7,
When the cam 12a provided on the No. 1 and the cam 12b provided on the valve body 6 correspond to each other, only manual exhaust is possible, and the cam 12a does not correspond to the cam 12b. Exhaust valve in scuba diving, characterized in that in some cases both manual and automatic exhaust are possible.