JP2006036098A - Pressure-regulated calling device utilizing air of diver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-regulated calling device capable of eliminating degradation of the voice transmission performance by the use of a strong diaphragm of a microphone and a speaker integrated with a pressure-proof vessel, attenuation of the voice vibration caused by the water pressure on the diaphragm caused as the diving depth is increased, and the service depth limit determined by the pressure-proof performance of the vessel, and transmitting consistent sound information underwater. <P>SOLUTION: A microphone vessel 5 and a speaker vessel 4 are mounted on a mouth mask 2 with a water ingress preventive vessel 3. A mask internal cavity 12 to which air of the same pressure as the ambient pressure is supplied from a secondary pressure reducing valve 1 of a regulator, a microphone vessel internal cavity 15 and a speaker vessel internal cavity 14 are connected to each other via a vent pipe to equalize the pressure in the respective cavities. As a result, the differential pressure between the inside and the outside of the vessels is eliminated, and a problem of attenuation of the voice vibration and the service limit by the diving depth is solved. At the same time, any high pressure-proof strength is not required in external diaphragms 19, 20 of the microphone and the speaker forming a part of the vessels, and a thin diaphragm to facilitate the voice vibration can be used. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention mainly relates to an underwater call for the purpose of transmitting voice information in the words of divers in diving activities such as diving work and leisure diving.

  Conventionally, most of the containers that house microphones and speakers used for underwater calls are exposed to water pressure, so the diaphragm necessary for receiving and transmitting sound is also part of the watertight container, so it is watertight and pressure resistant. It required a high structure.

On the other hand, a mask with a peaker that works even with a structure having a low pressure strength has been devised. The space inside the container that houses the speakers is divided into two spaces with the speaker diaphragm as the boundary, and air with the same pressure as the ambient pressure that is output from the pressure regulator (regulator) used by the diver to the one side space Is indirectly supplied by an air pipe, and the air in the mask is supplied from the space in the mask to the other side space in the container through the air communication pipe.
JP 07-052879 (20th to 31st terms, FIGS. 1 and 2)

  The former microphone container and speaker container having a strong pressure resistant structure had to be thick and strong so that the diaphragm itself for receiving or transmitting sound could withstand water pressure. However, there is a problem that the amplitude range becomes narrower as the thickness of the diaphragm increases, and the sound transmission performance decreases. In addition, diaphragm compression by water pressure that increases as the depth of use becomes deeper also hinders voice vibration, which reduces voice transmission performance. Furthermore, there is a limit to the usable depth due to the strength limit of the pressure resistance.

  On the other hand, in the latter mask with speaker, the speaker does not need to have a strong pressure-resistant structure, and the diaphragm can be vibrated in the air in the container in the same manner as when used on land, so that sound transmission is also efficient. Seems good. However, the original purpose of use is a speaker for the diver who is wearing the mask even in the water to listen to the sound from the sound source by air propagation. It was not a thing.

  The means for solving the problem is to directly utilize the air breathed by the diver to assimilate the air pressure in the water-inhibiting container internal cavity 13, the speaker container internal cavity 14, and the microphone container internal cavity 15 with the air pressure in the mask internal cavity 12. In the point. Specifically, description will be made with reference to the attached drawings.

  A full face mask that covers the entire face with a regulator secondary pressure reducing valve 1 that adjusts the pressure of the high pressure air in the compressed air tank and supplies the diver with air of the same pressure as the surrounding pressure. As shown in FIGS. 1 and 2, the microphone container 5, the flood prevention container 3, and the speaker container 4 are directly attached to the left and right sides of the mask 2, or the microphone container and the speaker container 4 are made longer by the ventilation pipe 8 and the ventilation pipe 7. Remove from the mask and attach it to a place other than the mask.

  The speaker container 4 is connected to the respective container internal cavities 14 and 15 by the microphone container 5 and the vent pipe 8, and the speaker container 4 and the flood prevention container 3 are connected to the respective container internal cavities 14 and 13 by the vent pipe 7. To do. Further, as shown in FIG. 2, it is assumed that the water immersion preventing container 3 can be ventilated by the mask internal cavity 12 and the ventilation pipe 6 formed when the diver puts the mask. That is, the mask internal cavity 12 filled with the air that the diver breathes and the cavity portions 13, 14, and 15 of each container are continuously connected by the ventilation pipes, and while the diver is breathing, It is characterized in that the cavities 12, 13, 14, 15 are kept at the same pressure.

  As long as the vent pipe 6a is inserted in the vent hole 9 in the mask, the infiltration prevention container 3 is arranged at a place other than the mask, or the microphone container 5 is separated from the mask by extending the vent pipe 8, so that the diver The speaker container 4 can be used in close contact with the throat portion, and the vent tube 7 can be further extended and attached to a place other than the mask. This article describes the case where each container is attached directly to the mask to avoid confusion.

  When the water enters the mask during the diving, water enters the vent hole 9 and travels through the vent pipe, so that the speaker container internal cavity 14 and the microphone container internal cavity 15 are submerged. There is a structure for dealing with new issues. The structure will be described mainly with reference to FIG.

The ventilation pipe 6 connected to the mask internal cavity 12 is arranged in the water immersion prevention container 3. A vent pipe 6b is attached to the upper side of the container, and an air supply check valve 16 that opens to the inside of the container is provided at the vent pipe opening. The ventilation pipe 6a is attached to the ventilation hole 9 opened in the mask, and its end opening opens into the mask. Next, an exhaust / drain hole 10 is opened on the lower side of the container, and an exhaust / drain check valve 11 that opens to the outside of the container is provided there.
Further, the infiltration prevention container 3 connected to the speaker container 4 is connected to the internal cavities of both containers by a vent pipe 7. A vent opening / closing valve 24 is arranged in the middle of the vent pipe 7.

  As a precondition of the present invention, the air in the compressed air tank adjusted slightly higher than the ambient pressure by the primary pressure reducing valve of the regulator is used for the intake operation of the diver by the function of the secondary pressure reducing valve 1 provided in the mask. There is a known technique of reacting and finally supplying the mask internal cavity 12 as air adjusted to the same pressure as the ambient pressure (water pressure plus atmospheric pressure).

  The diver once takes the pressure-adjusted air into the lungs, and then exhales the air into the mask internal cavity 12 through the airway and mouth, and the excess air is exhausted in the exhaust pipe 29 provided in the secondary pressure reducing valve 1 or in the mask. It is discharged into the water through the lower drain valve 30. In this way, as long as the diver repeats breathing, the air pressure in the mask inner cavity 12 is in the same state as the ambient pressure.

  During diving, the air pressure that increases with the water depth of the mask internal cavity 12 is first supplied with air from the secondary pressure reducing valve 1 and immediately assimilate with the ambient pressure. The pressure is higher than the air pressure in the prevention container internal cavity 13, the speaker container internal cavity 14, and the microphone internal cavity 15. However, immediately, due to the pressure difference, the air in the mask internal cavity 12 enters the submerged container internal cavity 13 through the vent hole 6 through the vent pipe 6, passes through the vent pipe 7 and the speaker container internal cavity 14, and enters the microphone through the vent pipe 8. The internal cavity 15 is reached. That is, the pressure of the air in the speaker container inner cavity 14 and the microphone container inner cavity 15 continuously changes so as to be the same pressure as the surrounding pressure, and it is possible to maintain an equilibrium state with the external pressure.

  Referring to FIG. 8, the state of air changing in the vessel where the diver is levitating will be observed. When the diver starts to rise, the surrounding pressure decreases, so that the air expands in the inner cavities 13, 14, and 15 of the infiltration prevention container 3, the speaker container 4, and the microphone container 5, and the internal pressure of the cavity temporarily becomes ambient. The state where the pressure becomes higher than the pressure in the water continues. At this time, the expanded air is discharged from the exhaust / drain hole 10 to the mask internal cavity 12 through the vent pipe 8 and the vent pipe 7 connected to each container, and finally discharged into the water together with the exhalation of the diver. Therefore, the pressure inside the container is kept in an equilibrium state with the same pressure as the surroundings.

  As long as the diver is breathing as described in detail above, the air pressure in the mask inner cavity 12, the flooding prevention container inner cavity 13, the speaker container inner cavity 14, and the microphone container inner cavity 15 is the same as the ambient pressure at any depth. Adjusted to Therefore, the following merits 1) to 4) occur.

  1) Since the diaphragm 17 of the microphone body and the diaphragm 18 of the speaker body are in the cavity, they can vibrate in the same manner as on land. And even if the water depth increases, the microphone external diaphragm 19 and the speaker external diaphragm 20 that are not subjected to pressure due to the surrounding pressure are such that the air pressure in the mask internal cavity 12 is the same as the pressure in each container internal cavity 13, 14, 15. As a result of being able to cope with a structure having a pressure resistance low enough to withstand a temporary pressure difference until assimilation, the thickness of the external diaphragm can be reduced. As a result, sound vibration is facilitated, and the sound of the diver can be efficiently captured and transmitted to the water.

  2) Since the microphone container internal cavity 15 and the speaker container internal cavity 14 are shared by the vent pipes 6, 7, and 8 that pass through the mask internal cavity 12 and the infiltration prevention container 3, the pressure inside and outside the container can be maintained in an equilibrium state. As long as the diver can dive, and within the allowable pressure tolerance range of the container of the audio signal amplifier, it can be used at any depth. In addition, in order to keep the external pressure balanced with the inside of the microphone or speaker container, which is a conventionally known method, a pressure-resistant hose equipped with a secondary pressure reducing valve function of the regulator is connected to each container to supply air or rise. Sometimes it is not necessary to attach an exhaust valve to suppress an increase in internal pressure due to the expanded air in the container.

  3) In the flood prevention container 3 including the vent pipes 6 and 7, when water enters the mask, water does not enter the speaker container internal cavity 14 or the microphone container internal cavity 15 via the vent pipe 7. It has a function of preventing flooding. The flood prevention function of the flood prevention container 3 will be described with reference to FIG. In FIG. 8, the arrangement and length of the ventilation pipes, the cross-sectional shape of the mask, etc. are displayed differently from those inferred from FIG. 1 and FIG. There is nothing.

  When water enters the mask internal cavity 12, the infiltration prevention container 3 has the check valve 11, so that the water in the mask can be prevented from entering the exhaust / drain hole 10. The water inside the mask cavity 12 enters the vent pipe 6a from the vent hole 9 in the upper part of the mask, but the water in the thin pipe becomes a water mass 33a that closes the pipe by the surface tension of the water, and the diver is constant. As long as the water stays at the water depth, the pressure of the mask inner cavity 12 and the pressure of the flooding prevention container inner cavity 13 are the same, so that the water mass 33a has a function of preventing new water from entering without moving.

  However, as shown in FIG. 8, even after the diver discharges water that has entered the mask internal cavity 12 by forced exhalation from the exhaust pipe 29 provided in the secondary pressure reducing valve 1 or the drain valve 30 at the lower part of the mask. A water mass 33a remains in the air pipe 6a and the state of closing the pipe is continued. This water mass 33a is temporarily higher than the air pressure in each container internal cavity until the air pressure in each container internal cavity 13, 14, 15 reaches the same pressure as in the mask when the diver descends. It is pushed by the pressure 34 of the mask inner cavity 12 and moves in the pipe toward the vent pipe 6b, and is pushed out by the water-inhibiting container inner cavity 13 and collected in the lower part of the container. The water 33c closes the air supply check valve 16 that opens to the inside of the container due to an increase in internal pressure due to the air expansion of each floating container internal cavity and the infiltration prevention container internal cavity 13, and conversely exhaust and drain check valves. By opening 11, the gas is discharged from the exhaust hole 10 into the mask 12. Due to this function, the water 33c accumulated in the container does not normally reach the vent pipe 7a, and can prevent the speaker container internal cavity 14 and the microphone container internal cavity 15 from entering the water.

If there is a possibility that the inside of the flood prevention container is filled with water due to some trouble, it is possible to prevent flooding into the speaker container side by closing the ventilation opening / closing valve 24 arranged in the middle of the ventilation pipe 7.

  Conventionally, only the microphone container is attached in the full face mask or the mouse mask 2, and the speaker container is built in the same container as the amplifier and is used for hand carry. The speaker is housed in the speaker container 4 which is made independent and mounted in the same mask provided with the microphone container 5, and further, a ventilation tube or the like is provided to allow ventilation between the microphone container inner cavity 15 and between the speaker container inner cavity 14 and the mask inner cavity 12. Vent holes were provided. This makes it possible to assimilate the air pressure in the internal cavities of the speaker container 4 and the microphone container 5 with the ambient pressure using the air directly breathed by the diver, leading to a significant reduction in the pressure resistance of the container. It was. As a result, the thickness of the microphone external diaphragm 19 and the speaker external diaphragm 20 that function as part of the container is reduced to about 1 mm, which facilitates sound vibration and ensures safety against shock. Made possible.

  Two audio output connection terminals 25 for outputting audio signals to the amplifier are attached to the microphone container 5, and two audio input connection terminals 26 for connecting the audio signals from the amplifier are attached to the speaker container 4. . Since the main object of the present invention is related to the microphone and the speaker unit, details of the amplifier are not mentioned here.

  The microphone container 5 and the speaker container 4 are made of a material such as hard vinyl chloride and have a microphone main body 22 and a speaker main body 23 incorporated therein. The external diaphragms 19 and 20 that are part of each container are made of hard vinyl chloride or acrylic material, and are processed to a thickness of about 1 mm using a disk having a size equivalent to the diameter of the microphone or speaker.

  Next, according to the conventional technique, the microphone external diaphragm 19 and the speaker external diaphragm 20 are respectively set so that the sound vibrations of the diaphragms 17 and 18 of the microphone body and the speaker body are secondarily transmitted to the external diaphragm. The center part of the microphone main body diaphragm 17 and the center part of the diaphragm 18 of the speaker main body are joined by silicon 21 and fixed so that both containers can be kept watertight. At this time, the cavities before and after the microphone main body diaphragm 17 and the speaker main body diaphragm 18 in the microphone container 5 and the speaker container 4 are in a state in which air can be ventilated by the gap between the respective diaphragms.

  A vent hole having a diameter of about 5 mm is formed in the outer periphery of the microphone container 5 so that the vent pipe 8a can be inserted. Similarly, one vent hole having a diameter of about 5 mm is formed above and below the outer periphery of the speaker container 4 so that the vent pipe 8b can be inserted into the upper hole and the vent pipe 7b can be inserted into the lower hole. The speaker container 4 and the microphone container 5 are connected by a flexible vent pipe 8 having an outer diameter of about 5 mm and an inner diameter of about 3 mm, and the internal cavities 14 and 15 are connected.

  The flood prevention container 3 will be described with reference to FIG. The vent pipe 6b, the vent pipe 7a, and the exhaust / drain hole 10 are arranged on the lower side in order from the upper part of the container that is always on the upper side when attached to the mask. A vent pipe 6b is attached to the uppermost part, and an air supply check valve 16 that opens inside the container that closes the vent pipe opening is provided. The vent pipe 6 extends from the submergence prevention container 3 using a thin pipe having an inner diameter of about 3 mm so that the invaded water generates a water mass due to surface tension. The vent pipe 6 is temporarily masked so as not to obstruct the diver's breathing. The vent pipe 6a, which is the outside opening, is inserted into a vent hole 9 opened on the upper side of the mask in order to reduce the influence of water that has entered the mask. The vent pipe 7 is also taken out of the mask once, and a vent opening / closing valve 24 is arranged in the middle of the vent pipe, and then connected to the speaker container 4. Next, an exhaust / drainage hole 10 is formed in the lowermost part of the container where water is accumulated, and an exhaust / drainage check valve 11 is provided on the outside of the container. The air supply check valve 16 and the exhaust / drain check valve 11 are made of silicon rubber, which is made of a flexible and durable material. Use a check valve that controls the direction.

  The infiltration prevention container 3, the speaker container 4, and the microphone container 5 processed as described above are set on the left and right of the full face mask or the mouse mask 2 as shown in FIG. The microphone container 5 is fixed with an attachment band or the like so that the microphone outer diaphragm 19 faces the mask inside, and the speaker container 4 to which the flood prevention container 3 is connected so that the speaker outer diaphragm 20 faces outward. Arrange.

  FIG. 9 shows an application example of the flood prevention container 3. A portable container 36 other than a microphone or a speaker incorporating other devices such as an audio signal amplifier or a camera can be selected to be thin and lightweight by reducing the pressure strength by using the air breathed by the diver. .

One end of the vent pipe 38 is attached to the internal cavity of the secondary pressure reducing valve 1 that is formed when the diver holds the mouthpiece of the secondary pressure reducing valve 1 in the mouth, and the other end is connected to the flooding prevention container 3. A relay container 39 provided with a connector is arranged between the inundation prevention container 3 and the portable container 36 so that the detachable vent pipe 40 connected to the portable container 36 can be attached and detached as necessary. The diver removes the detachable vent tube 40 from the relay container when operating at the same depth without pressure change, and freely operates the portable container containing the camera or the like. By reconnecting to the relay container, the cavity pressure of the portable container can be assimilated with the surrounding pressure.

  The underwater call system according to the present invention eliminates attenuation of sound vibration due to the depth of diving, and can transmit sound with a stable and clear sound quality and a sufficient volume. This will convey information to the partner in words such as diving work sites such as ocean development, underwater report work in environmental surveys and underwater coverage, instructors to students in leisure diving, explanation of biological ecology during ecology tour, etc. Therefore, work efficiency, safety and service can be improved.

In this embodiment, a microphone container and a speaker container are directly attached to a mouse mask. It is an internal structure of the mouse mask of FIG. It is a perspective view of a microphone container. It is a perspective view of the speaker container attached to the flooding prevention container. It is a perspective view of the flood prevention container which attached the speaker container. It is a microphone container cross section (A-A '). It is a speaker container cross section (BB ') connected with a flood prevention container. It is a figure showing the air supply of an inundation prevention container in water, exhaust_gas | exhaustion, and drainage structure. Application example using a flood prevention container

Explanation of symbols

1 Regulator (secondary pressure reducing valve)
2 Mouse mask
3 Inundation prevention container 4 Speaker container
5 Microphone container 6 Vent pipe (for ventilation between the inner cavity of the flood prevention container and the inner cavity of the mask)
6a Mask internal cavity side end port 6b of the vent pipe 6 Submersion container side attachment part 7 of the vent pipe 6 Ventilation pipe (for venting between the flood prevention container and the speaker container internal cavity)
7a Attaching part 7a of the ventilation pipe 7 on the side of the water-proofing container 7b Attaching part 7a of the ventilation pipe 7 on the side of the speaker container 8 Ventilation pipe
8a Microphone container side attachment portion 8b of the vent tube 8 Speaker tube side attachment portion 9 of the vent tube 8 Vent hole 10 Exhaust / drain hole 11 Check valve (for exhaust / drain)
12 Internal cavity of the mask (space created when the mask is in close contact with the face)
13 Infiltration prevention container internal cavity 14 Speaker container internal cavity 15 Microphone container internal cavity 16 Check valve (for air supply)
17 Microphone body diaphragm 18 Speaker body diaphragm 19 Microphone external diaphragm 20 Speaker external diaphragm 21 Silicon joint 22 Microphone body 23 Speaker body 24 Ventilation on / off valve 25 Audio output connection terminal 26 Audio input connection terminal 27 Audio output code 28 Audio input code 29 Exhaust pipe 30 Drain valve 31 Air supply port 32 of secondary pressure reducing valve Ambient water 33a Water mass 33b that has entered the vent pipe opening 6a Water mass 33c that has moved to the air vent 6b Inundation prevention Water accumulated in container 34 Temporarily high pressure in mask internal cavity 35 Secondary pressure reducing valve cavity (space created when added to mouth)
36 Relay container 37 Mobile container (built-in camera and other devices)
38 Ventilation pipe (between the cavity of the secondary pressure reducing valve and the internal cavity of the flood prevention container)
39 Vent pipe (between internal cavity and internal cavity)
40 Detachable vent pipe (between relay container internal cavity and mobile container internal cavity)
41 Compressed air tank

Claims (2)

A full face mask or mouse mask 2 equipped with a secondary pressure reducing valve 1 for a diving regulator that adjusts the pressure of the compressed air tank so that the diver can breathe, an immersion prevention container 3, a speaker container 4, and a microphone container 5 A telephone device that has the following functions and is attached directly or indirectly by extending the ventilation pipe away from the mask.
The mask internal cavity 12, the flooding prevention container internal cavity 13, the speaker container internal cavity 14, and the microphone container internal cavity 15 are connected by a vent pipe so that the air can be vented between the respective cavities. The air pressure in the mask internal cavity 12 supplied after being adjusted to the ambient pressure by the secondary pressure reducing valve 1 of the regulator is sequentially transmitted to the submergence prevention container internal cavity 13, the speaker container internal cavity 14, and the microphone container internal cavity 15. However, during diving, the ambient pressure (water pressure plus atmospheric pressure) and the pressure in the speaker container internal cavity 14 and the microphone container internal cavity 15 are assimilated, and there is no pressure difference between the inside and outside of the container.
The microphone external diaphragm 19 and the speaker external diaphragm 20 which are part of the container can not only eliminate the sound attenuation due to unilateral pressurization from the surroundings due to the increase of the diving depth and the use depth limit due to pressure resistance performance, Since the container does not require a strong pressure-resistant structure, the thickness of the diaphragm can be reduced so as to facilitate sound vibration. As described above, a pressure-regulating communication device with the characteristics of efficiently transmitting diver's voice etc. into the water .
2. A pressure adjusting system for a cavity in a container by a combination of a water-inhibiting container 3 attached to a mask and a container having a built-in device such as a camera other than a microphone container 5 and a speaker container 4. As shown in FIG. 9, the prevention container 3 is connected to the internal cavity of the secondary pressure reducing valve 1 of the regulator by a ventilation pipe 38, and a single or a plurality of divers carrying a device by a ventilation pipe 39 or a relay container 36. The internal cavity 35 of the secondary pressure reducing valve 1 and the internal cavity pressure of the portable container 37 are assimilated with the surrounding pressure during diving by connecting the internal cavity of the container 37 and the relay container 36 as required by a detachable vent pipe 40. Pressure regulating system having a feature capable of

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