JPH0880896A - Snorkel equipped with air booster - Google Patents

Abstract

PURPOSE: To provide a snorkel for the easy aspiration without being depressed by the water pressure even in the case of the diving in the deep water. CONSTITUTION: A snorkel equipped with an air booster is constituted so that a relay pipe 4 for intake which consists of a long flexible tube is connected with an air intake pipe 3 installed on a buoy 1, and an air booster 5 is installed between the relay pipe 4 and a mouthpiece 7 having a check valve 11 for exhaust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a snorkel, which is one of the breathing apparatus for diving.

[0002]

2. Description of the Related Art A snorkel of this kind has already been filed by the present inventor (Japanese Patent Application No. 4-80953).
issue).

In order to improve this, the above-mentioned application had a drawback that the snorkel before that dived beyond the length of the hard and short pipe attached to the mouthpiece and the intake port became submerged so that it could not be breathed. In addition, we were able to achieve the intended purpose in that we were able to freely dive in the water for a long time by making it possible to breathe through an inhalation relay tube consisting of a long flexible tube. .

[0004]

However, in the above-mentioned application, when diving deep into the water, the water pressure increases in proportion to the water depth, so that human lung muscle strength loses the water pressure and it becomes difficult to inhale, and the depth at which diving and breathing is possible is limited. Therefore, there is a drawback that you can only breathe in a very shallow area in the water.

An object of the present invention is to eliminate the above-mentioned drawbacks, and it is an object of the present invention to provide a snorkel that can be easily breathed without losing water pressure even when diving deep in water.

[0006]

According to the present invention, an intake pipe is attached to a float made of an appropriate material and shape having sufficient buoyancy, and an intake relay pipe made of a flexible tube of an appropriate length is connected to the float. , The other end is connected to a mouthpiece via an air booster (air pressure amplifier), and an exhaust check valve is attached to this mouthpiece. Although not particularly necessary, attach an underwater exhaust pipe to the check valve for exhaust.
The intake pipe may be provided at the end of the intake relay pipe.

The air booster is constructed so that fresh outside air can be sucked in through the intake relay pipe, the pressure of the fresh air can be increased, and the air can be supplied into the mouthpiece. Relay connection pipe connecting the mouthpiece,
An intake check valve and a pressure increasing check valve installed inside the relay connection pipe, an air pump that is operated manually or electrically, and a communication connection pipe that connects the relay connection pipe and the air pump.

The relay connection pipe may be constructed by extending the end portion of the intake relay pipe or the mouthpiece.

Regarding the mounting positions of the check valve for intake and the check valve for boosting pressure, in the relay connecting pipe, the check valve for intake is the connecting portion with the relay pipe for intake, while the check valve for boosting is the mouthpiece. It is installed at an appropriate position in each of the connection parts with.
However, when the electric pump is used, the check valve for boosting pressure can be omitted because it does not have a positive need.

Explaining the above-mentioned communication connecting pipe, in the case of a manual pump, one intake and exhaust connecting pipe is used as a communication connecting pipe to the side of the relay connecting pipe (from the intake check valve to the pressure increasing check valve). It is installed at an appropriate position), and when using an electric pump, there are two connecting pipes, an intake connecting pipe and an exhaust connecting pipe.The intake connecting pipe is connected so that the intake check valve is sandwiched on the side of the relay connecting pipe. On the relay pipe side, the exhaust connection pipe is installed on the opposite side, that is, on the mouthpiece side.

Both the intake check valve and the booster check valve, which are components of the air booster, are configured to open unilaterally from the intake relay pipe to the mouthpiece side.
The check valve used in the present invention is a total of three of these check valves and the exhaust check valve attached to the mouthpiece, but in short, all open in the direction from the outside air to the underwater side, It is configured to close in the opposite direction.

When an electric pump is used, the air booster can be constituted only by an electric pump having an intake connecting pipe and an exhaust connecting pipe in addition to the above structure.

[0013]

The operation will be described based on the above configuration.

When the float floats on the water surface, the upper end of the intake pipe projects to the water surface due to the float, and when the mouthpiece is held in the mouth and the dive is performed, the intake relay pipe is a flexible tube and the water resistance Soften the water. If you inhale in water, the lung muscle strength exceeds the water pressure in very shallow water, so you can inhale easily without operating the air booster. At this time, due to the suction force of the lungs, the check valve for inhalation and the check valve for boosting pressure open to the mouthpiece side by the suction force from the mouth, the outside air and the mouthpiece are communicated and released to the outside air, and fresh air is released. It is sucked into the mouthpiece from the upper end of the intake pipe via the intake relay pipe and reaches the mouth. At this time, the exhaust check valve is completely closed by the suction force and the water pressure, thereby preventing the inflow of water.

Further, as the water pressure increases as the user deeply dives in the water, the lung muscle strength loses the water pressure and it becomes difficult to breathe, so the air booster is operated. When the air booster is actuated by suction, fresh outside air is sucked from the intake pipe through the intake relay pipe into the chamber of the air booster, while when it is actuated by exhaustion, the fresh boosted air is sent into the mouthpiece.
The boosted air that has been sent is boosted to the pressure of water and supplied to the mouth so that it can breathe easily.

When the dirty air after breathing is exhausted from the mouth into the mouthpiece, the exhaust check valve opens the exhaust check valve to the underwater side, and the dirty air is exhausted into the water.
At this time, the check valve for boosting pressure is closed by reverse pressure, so dirty air exhausted from the mouth may flow into the air booster,
Water that has inadvertently entered from the mouth will not flow in.

As described above, the diver can continue to dive for a long time while breathing comfortably by the action of the air booster not only in the shallow depth of water but also in deep water.

[0018]

EXAMPLE An example of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, a float 1 made of an appropriate material and having a sufficient buoyancy is filled with water from an intake port 2. An intake pipe 3 made of a pipe whose upper end portion is bent downward so as not to flow in is attached, and an intake relay pipe 4 made of a flexible tube of an appropriate length is attached to the lower end thereof.
1 is connected to the mouthpiece 7, and the other end is connected to the mouthpiece 7 via the relay connection pipe 6 of the air booster 5.

An air pump 8 is connected to a side portion of the relay connection pipe 6 by a communication connection pipe 9, and the intake check valve 10 and the pressure increasing check valve are provided inside the relay connection pipe 6. 1
2 is attached. Further, in order to exhaust the dirty air after breathing into the water, the exhaust check valve 11 is attached to the mouthpiece 7.
Underwater exhaust pipe 13 made of short pipe
Connect.

An embodiment in which the air pump 8 is a manual pump will be described. As shown in FIG. 2, the manual pump 8 is composed of a bellows type expansion / contraction chamber 15 in which a compression spring 14 is attached. As shown in FIG. 4, after compressing this against the compression spring 14 from both sides by sandwiching it between the sides,
When loosened, the compression spring 14 returns with its spring pressure. Then, the communication connecting pipe 9 is used as one intake / exhaust connecting pipe, and the inside of the relay connecting pipe 6 is sucked and decompressed through this, and the intake check valve 10 attached to one end of the communication connecting pipe 9 is opened and the relay connecting pipe 6 is opened. The pressure increasing check valve 12 attached to the other end is closed, and fresh outside air is introduced into the expansion / contraction chamber 15 from the intake relay pipe 4. When compressed again, the inside of the relay connecting pipe 6 is pressurized, and conversely to the above, the intake check valve 10 is closed and the pressure increasing check valve 12 is opened, so that fresh pressure increasing air in the expansion / contraction chamber 15 is released. It is supplied into the mouthpiece 7 through the pressure increasing check valve 12 and further fed into the lung through the mouth. Continuing, the dirty air exhausted into the mouthpiece 7 is used for exhaust check valve 1
Open 1 and exhaust into the water.

When breathing and exhausting, the expansion / contraction chamber 15 is expanded while opening the side, and then the side is tightened to inhale while compressing the side. By thus repeatedly operating the air pump 8 each time, the air that has been increased to the level of water pressure is constantly supplied to the lungs through the mouth so that the user can breathe smoothly.

As shown in FIG. 2, the intake check valve 10, the exhaust check valve 11 and the pressure increasing check valve 12 are circular valve seats 19 and 20 having vent holes 16, 17 and 18, respectively. ，
21 is a circular valve body 2 made of soft silicone rubber material
2, 23, 24 are fitted and fixed with pins 25, 26, 27. That is, the valve body 22 of the intake check valve 10 is fixed by the pin 25 at its center so that the valve body 22 is located on the valve seat 19 on the relay connection pipe 6 side. Further, the valve body 2 of the exhaust check valve 11
3 is fixed at its central portion with a pin 26 so as to be located on the underwater side of the valve seat 20. Furthermore, the check valve 1 for boosting pressure
The second valve element 24 has its center fixed with a pin 27 so as to be positioned on the mouthpiece 7 side on the valve seat 21.

In short, any of the valve bodies is constructed so as to open from the intake pipe 3 through the intake relay pipe 4, further from the mouthpiece 7 to the water, and close in the opposite direction.

FIG. 3 shows an embodiment in which the air pump 8 is an electric pump. In the present embodiment, unlike the case where the above-mentioned manual pump 8 is used, unlike the case where the intake and exhaust pipes 9 perform intake and exhaust, the intake port and the exhaust port are separate, An intake connection pipe 28 and an exhaust connection pipe 29 are required. The air pump is operated by turning on and off the power switch, and when turned on, the boosted air is constantly supplied into the mouthpiece 7. In a place where the water depth is shallow, it is possible to breathe easily without the air booster 5, so the operation may be stopped, and the operation may be started when the water depth becomes deep and it becomes difficult to breathe.

When the operation is started, air is sent into the relay connecting pipe 6 to increase the pressure, so that the intake check valve 10 is closed. At the same time, the boosted air opens the booster check valve 12 and reaches the mouth, so that intake is possible. Further, the dirty air after breathing is exhausted into the water through the exhaust check valve 11. Since the operation is different from that of the manual pump 8, the inflow of dirty air into the air booster 5 can be ignored during the operation. Further, it is preferable to provide a switch for adjusting the amount of discharged air so as to correspond to the water pressure according to the water depth.

When the electric pump 8 is used, the electric pump 8 can be directly attached without providing the relay connection pipe 6 between the intake relay pipe 4 and the mouthpiece 7 in addition to the above structure ( (Not shown). In this case, the electric pump 8
Independently configures the air booster 5, but the power switch must always be turned on regardless of the depth of water.

Further, the air pump 8 of the air booster 5
When the air pressure inside the mouthpiece 7 is increased above the water pressure due to its high pressure increasing ability, the exhaust check valve 11 opens to the underwater side and is exhausted by an amount higher than the water pressure. When the air pressure is in equilibrium with the water pressure, the exhaust check valve 11 closes, so that the increased pressure does not put an excessive burden on the lungs.

Intake check valve 10 and exhaust check valve 11
The check valve 12 for boosting pressure is not limited to the one having the above-mentioned configuration, and may have another appropriate configuration.

As shown in FIG. 2 and FIG. 3, the above-mentioned respective components are connected by a fitting method, but they can be detachable by a screwing method, a socket method, or other means, or integrally molded. May be.

FIG. 4 shows the state of use, in which a diver holds a mouthpiece 7 in his mouth and holds an air booster 5 consisting of an air pump 8 using a manual pump aside and diving. ing.

[0031]

Since the present invention is configured as described above, it has the following effects.

According to the present invention, the diver can supply the fresh outside air of the pressure necessary for breathing to the mouth at any time by the function of the air booster, so that he / she can breathe easily even when diving deep in water. I was able to do it.

Further, the inside of the mouthpiece is completely shut off from the outside air by the intake check valve or the pressure increasing check valve, and the dirty air is exhausted into the water through the exhaust check valve. Since it is configured, fresh air to be sucked in and dirty air to be exhausted are not mixed, and fresh air can always be supplied to the mouth, so it is possible to dive deep in water for a long time It became so.

In addition, since it is connected by an intake relay pipe made of a flexible tube in water to reduce the resistance of water, it does not disturb the diving action and is free to move and convenient to use.

There is also a means using a high-pressure air cylinder, but it requires training to operate it, and it is difficult to use unless it is skilled, and there is a danger because the high-pressure cylinder is used, which is a problem. However, since the present invention does not have such a problem, it is safe and can be used by children.

Furthermore, it can be said that the breathing apparatus for diving is simple in structure, convenient to carry, cheap in cost, and easy to handle.

[0037]

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment when a manual pump is used as an air booster.

FIG. 3 is a cross-sectional view showing an embodiment when an electric pump is used as an air booster.

FIG. 4 is an overall perspective view showing a usage state of the present invention.

[Explanation of symbols]

 1 Float 3 Intake pipe 4 Intake relay pipe 5 Air booster 7 Mouthpiece 11 Exhaust check valve

Claims (1)

[Claims] 1. An intake relay pipe 4 made of a long flexible tube is connected to an intake pipe 3 attached to a float 1.
An snorkel with an air booster, characterized in that an air booster 5 is attached between this and the mouthpiece 7 to which the exhaust check valve 11 is attached.