JPH085919Y2 - Underwater breathing apparatus - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater breathing apparatus such as a snorkel or regulator used for skin diving and scuba diving.

[0002]

2. Description of the Related Art In this type of underwater breathing apparatus, since the breathing hole of the mouthpiece and the ventilation hole of the breathing gas supply device communicate with each other, when the mouthpiece is removed from the mouth underwater, the breathing of the mouthpiece Water enters through the holes into the respiratory gas supply.

Therefore, in the snorkel, when water invades, the air is blown to discharge the water from the air supply port, or the air supply pipe is provided with a check valve, and the breath is blown to the internal pressure in the air supply pipe. Was raised, the check valve was opened, and the infiltrated water was discharged.

Further, in an open type in which compressed air is used as a breathing gas and exhaust gas is discharged into water, a check valve is provided in a breathing gas supply device so that when water enters, a breath is blown, or , The pressure of the breathing gas was used to raise the internal pressure in the breathing gas supply to open the check valve, and the infiltrated water was discharged.

Further, in a semi-closed type or a closed type in which a mixed gas of oxygen, nitrogen, helium, hydrogen, etc. is used as a breathing gas and exhaust gas is reused, a valve which can be opened and closed by hand is provided in the mouth, Water was prevented from entering.

[0006]

However, in the case of the open type, infiltration water must be discharged each time, and in the case of the circulation type, the valve is manually operated each time, which is troublesome. If water enters the circulation circuit, it may cause trouble.

It is therefore an object of the present invention to provide an underwater breathing apparatus which, when the mouthpiece is moved away from the mouth, closes the vent hole to prevent water from entering the breathing gas feeder.

[0008]

In order to achieve the above-mentioned object, the mouthpiece for a breathing apparatus of the present invention is, in the first invention, formed with a vent hole to a breathing gas supply device communicating with a breathing gas source. In an underwater breathing apparatus in which a brim for fitting in the mouth and a mouthpiece having a breathing hole communicating with the ventilation hole are connected to the connecting short pipe, a closing member is slidably inserted into the ventilation hole and the breathing hole. A lid that closes the breathing gas supply side of the ventilation hole at one end of the closing member, and an elastic member that urges the closing member toward the mouthpiece side and projects the other end from the breathing hole. In addition to being provided, a flange portion is formed at the other end of the closing member to push the closing member toward the breathing gas supplier when it is fitted in the mouth.

The second invention is characterized in that an opening / closing valve mechanism for opening / closing between the breathing gas supply device and the breathing gas source is provided in association with the slide of the closing member.

[0010]

With the first configuration, when the mouthpiece is separated from the mouth, the lid is urged by the elastic member to close the breathing gas supplier side of the vent hole and prevent water from entering. To prevent. In addition, when the mouthpiece is attached to the mouth, the brim protruding from the mouthpiece breathing hole is pushed by the teeth and the closing member is pushed toward the respiratory gas supplier side, and the blockage of the vent hole is released to release the breathing gas. be introduced.

According to the second structure, when the mouthpiece is attached to the mouth and the closing member is pushed toward the breathing gas supplier, the breathing gas supplier and the breathing gas source are interlocked with this. Since the opening / closing valve of is opened, the breathing gas is supplied from the breathing gas source at the same time when the mouthpiece is attached to the mouth.

[0012]

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

FIGS. 1 and 2 show a first embodiment of the present invention. In the underwater breathing apparatus 1, a mouthpiece 4 is connected to a connecting short pipe 3 of a breathing gas feeder 2, and the connecting short pipe is connected. The tube 3 is formed with a vent hole 5, the mouthpiece 4 is formed with a mouth fitting collar 7 having protrusions 6, 6 for biting, and a breathing hole 8 communicating with the vent hole 5.

A closing member 9 is slidably inserted in the vent hole 5. This closing member 9 is provided with a vent hole 5.
A longer hollow cylinder 9a, a lid 9b attached to the end of the cylinder 9a on the side of the respiratory gas supplier 2, and a collar 9c attached to the end of the cylinder 9a on the mouthpiece 4 side. have.

The closing member 9 has a collar 9c which is held between the back surface of the lid 9b and the wall surface of the respiratory gas supply device 2 which faces the lid 9b, so that the collar 9c is held by the mouthpiece 4. The protrusions 6 and 6 for engagement are projected to almost the same position.

A breathing gas introducing hole 9d is formed on the side of the breathing gas supplier 2 in the cylindrical body 9a, and a lid 9b is provided in the lid 9b.
Vent hole 5 of breathing gas supplier 2
A packing 9e for closing the above is provided.

The underwater breathing apparatus 1 thus constructed is
In the state where the mouthpiece 4 shown in FIG. 1 is separated from the mouth, the lid 9b closes the vent hole 5 by the urging force of the coil spring 10, so that water is supplied from the breathing hole 8 of the mouthpiece 4 into the breathing gas feeder 2. To prevent ingress.

Further, in the state where the mouthpiece 4 shown in FIG. 2 is attached to the mouth, the brim 7 for fitting in the mouth is fitted between the lips and the teeth, so that the brim 9c hits the tooth and the closing member 9 makes the breathing gas. Since it is pushed toward the supplier 2 side and the blockage of the vent hole 5 by the lid 9b is released, the breathing gas in the breathing gas feeder 2 is introduced from the breathing gas introduction hole 9d of the cylindrical body 9a into the breathing hole of the mouthpiece 4. 8 is introduced and can breathe.

Therefore, since the vent hole 5 is closed at the same time as the mouthpiece 4 moves away from the mouth to prevent water from entering, breathing is resumed without draining the water even if the mouthpiece 4 is held again. it can.

Therefore, if the present invention is applied to an underwater breathing apparatus such as a snorkel and a regulator, the mouthpiece can be easily exchanged from the snorkel to the regulator.

3 and 4, even if the closing member 11 is inadvertently pushed with the mouthpiece 4 separated from the mouth, the vent hole 5 is formed.
The second embodiment of the present invention which prevents the opening of
The ventilation hole 5 of the connecting short pipe 3 and the breathing hole 8 of the mouthpiece 4 are formed into an elliptical shape, and the hollow cylindrical body 11a of the closing member 11 is formed.
Is similarly formed into an elliptical shape, and the cylindrical body 11a is
In the closed state of the vent hole 5, it is divided into a part 11b housed in the connecting short pipe 3 and a part 11c projecting from the breathing hole 8, and the part 11c projecting from the breathing hole 8 is rotated 90 degrees around an axis. Then, the elliptical portion of the protruding portion 11c is locked to the short circular portion of the portion 11b in which the protruding portion 11c is housed to serve as a stopper so that the closing member 11 cannot be pushed.

When the mouthpiece 4 is attached to the mouth, if the portion 11c protruding from the breathing hole 8 is rotated by 90 degrees around the axis from the above-mentioned locked state, as shown in FIG. The closing member 11 is pushed toward the breathing gas supply device 2 side, and the breathing gas in the breathing gas supply device 2 is introduced into the breathing hole 8 of the mouthpiece 4 and breathing can be performed, as in the first embodiment.

FIGS. 5 and 6 show a third embodiment of the present invention, in which an underwater breathing apparatus 20 has a short connecting pipe 22 on one wall of a breathing gas supplier 21 and a breathing gas on the other wall. Respiratory gas introduction pipes 23 from a source (not shown) are respectively formed, the connecting short pipe 22 is connected to the mouthpiece 4, and the respiratory gas introduction pipe 23 is provided with an opening / closing valve 24.

The closing member 25 slidably inserted into the vent hole 22a of the connecting short pipe 22 is a hollow cylindrical body which is divided into two parts, that is, the accommodating cylinder portion 25a and the projecting cylinder portion 25b, as in the second embodiment. It is configured to be lockable by rotating the protruding tubular portion 25b by 90 degrees.

A push rod 25d is provided on the back surface of the lid 25c of the closing member 25, and a coil spring 26 is wound around the push rod 25d.

The on-off valve 24 is one in which the respiratory gas introducing pipe 23 is always closed by the valve body 24b by the coil spring 27 wound around the valve rod 24a, and the lever 24c provided at the tip of the valve rod 24a is operated. The valve is opened when the end side is pushed, and the push rod 25d is provided at a position where the push rod 25d pushes the operation end side of the lever 24c when the closing member 25 is pushed.

With such a configuration, as shown in FIG. 5, in the state where the vent hole 22a of the connecting short pipe 22 is closed by the lid 25c of the closing member 25, the breathing gas introducing pipe 23 opens and closes the open / close valve 24. However, in the state of FIG. 6 in which the mouthpiece 4 is attached to the mouth, the closing member 2
5 is pushed to release the blockage of the vent hole 22a by the lid body 25c, and the push rod 25d provided on the back surface of the lid body 25c pushes the operation end side of the lever 24c of the opening / closing valve 24, and the breathing gas introducing pipe. 23 is opened and the air from the breathing gas source is introduced into the breathing gas supply device 21 so that the mouthpiece 4
I can breathe from.

Therefore, when the mouthpiece 4 is separated from the mouth, the supply of the breathing gas from the breathing gas source can be interrupted and the intrusion of water into the breathing gas feeder 21 can be prevented. Since the breathing gas is supplied from the breathing gas source by attaching to the mouth, it is not necessary to open and close the on-off valve from the breathing gas source as in the related art, and the operation procedure is simplified.

Further, since the breathing gas is supplied from the breathing gas source when the mouthpiece 4 is attached to the mouth, the trouble caused by forgetting to open the on-off valve can be solved. Furthermore, when the mouthpiece 4 is released from the mouth, breathing is performed. Since the supply of the breathing gas from the working gas source is cut off, the breathing gas in the working gas source can be effectively used.

In each of the above-mentioned embodiments, the hollow cylinder is slid into the ventilation hole of the connecting short pipe and the breathing hole of the mouthpiece, but a plate-like or rod-like shape which does not block the ventilation hole and the breathing hole is used. It may be a closing member that slides things.

[0031]

As described above, according to the first aspect of the present invention, in the underwater breathing apparatus such as the snorkel and the regulator, the vent hole for connecting the mouthpiece of the breathing gas supplier is provided with the vent hole at one end. A mouthpiece is provided with a lid for closing the breathing gas supply side, and the other end is slidably inserted into the vent hole, the other end protruding from the breathing hole of the mouthpiece. In addition to urging the mouthpiece into the mouthpiece, a flange is formed on the other end of the closing member that pushes the closing member toward the breathing gas supplier when the mouthpiece is inserted. Is urged by the elastic member to close the breathing gas supplier side of the vent hole and prevent water from entering. Further, when the mouthpiece is attached to the mouth, the collar portion is pushed by the teeth and the closing member is pushed toward the breathing gas supplier side, the blockage of the ventilation hole is released, and the breathing gas is introduced.

Further, in the second invention, a valve opening mechanism for opening an on-off valve between the respiratory gas supplier and the respiratory gas source in association with the pushing of the closing member toward the respiratory gas supplier. Since the opening and closing valve is closed when the ventilation hole of the connecting short pipe is closed by the lid of the closing member, the closing member is pushed and the lid is closed when the mouthpiece is attached to the mouth. While the body releases the blockage of the vent hole, the on-off valve is opened to introduce the breathing gas from the breathing gas source into the breathing gas feeder to allow breathing from the mouthpiece.

Therefore, when the mouthpiece is separated from the mouth, the supply of the breathing gas from the breathing gas source can be interrupted and the intrusion of water into the breathing gas feeder can be prevented, and the mouthpiece can be held in the mouth. Since the breathing gas is supplied from the breathing gas source when it is mounted, the opening / closing operation of the on-off valve from the breathing gas source unlike the conventional case is unnecessary, and the operation procedure is simplified.

Further, since the breathing gas is supplied from the breathing gas source when the mouthpiece is attached to the mouth, the trouble caused by forgetting to open the open / close valve can be solved. Further, when the mouthpiece is released from the mouth, the breathing gas is released. Since the supply of the breathing gas from the source is cut off, the breathing gas in the breathing gas source can be effectively used.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an underwater breathing apparatus according to a first embodiment of the present invention with a vent hole closed.

FIG. 2 is a cross-sectional view of the underwater breathing apparatus according to the first embodiment of the present invention with the vent hole opened.

FIG. 3 is a perspective view showing an underwater breathing apparatus with a ventilation hole closed according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing an underwater breathing apparatus according to a second embodiment of the present invention with a vent hole opened.

FIG. 5 is a cross-sectional view of an underwater breathing apparatus with a vent hole closed according to a third embodiment of the present invention.

FIG. 6 is a cross-sectional view of the underwater breathing apparatus according to the third embodiment of the present invention with the vent hole opened.

[Explanation of symbols]

1, 20 ... Underwater breathing apparatus, 2, 21 ... Breathing gas supply device,
3, 22 ... Connection short pipe, 4 ... Mouthpiece, 5, 22a ...
Vent hole, 7 ... Collar for fitting in mouth, 8 ... Breathing hole, 9, 11,
25 ... Closing member, 9b, 25c ... Lid, 9c ... Collar part, 1
0, 26 ... Coil spring, 24 ... Open / close valve

Claims (2)

[Scope of utility model registration request] 1. A collar for fitting in the mouth, in a connecting short pipe having a vent for a breathing gas supplier communicating with a breathing gas source,
In an underwater breathing apparatus in which a mouthpiece having a breathing hole communicating with the ventilation hole is connected, a closing member is slidably inserted into the ventilation hole and the breathing hole, and the breathing hole of the ventilation hole is provided at one end of the closing member. A lid that closes the gas supply side is provided, and an elastic member that urges the closing member toward the mouthpiece side and projects the other end from the breathing hole is provided. An underwater breathing apparatus, characterized in that a brim portion is formed to push the closing member toward the breathing gas supplier when fitted. 2. The underwater breathing apparatus according to claim 1, further comprising an opening / closing valve mechanism that opens and closes between the breathing gas supply device and the breathing gas source in association with sliding of the closing member.