JP6385136B2 - Breathing device loudspeaker - Google Patents

Description

The present invention relates to a breathing device for a respiratory apparatus.

A voice transmitter attached to a face of a respiratory apparatus such as a dust mask, a respirator with an electric fan, a gas mask, an air supply mask, and a self-contained breathing apparatus having a face covering a part or all of the face, As described in Patent Document 1, a vibrating body composed of a film body in which a peripheral portion is sandwiched and fixed between a pair of front and rear frames in a tensioned state, that is, a flat plate state when no load is applied in a state where tension is applied. It was equipped with a vibrating body consisting of a film body that could be maintained.

JP 2000-189529

As described in Patent Document 1, in a conventional voice transmitter, a pair of front and rear frame members sandwiching the peripheral edge of the film body are caulked to fix the film body to the frame and to apply tension to the film body. There was a problem that wrinkles easily entered the film body during application.
The present invention has been made in view of the above problems, and is a voice transmitter attached to a face of a respiratory apparatus having a face that covers part or all of the face, and does not generate wrinkles when fixed to a frame. An object of the present invention is to provide a voice transmitter including a vibrating body.

In order to solve the above-mentioned problems, in the present invention, a voice transmitter attached to a face piece of a respiratory apparatus having a face piece covering a part or all of the face, wherein a flat state is obtained without applying a tension. comprising a vibrating body comprising maintaining it film formed body, the vibrating body, characterized by circular film moldings der Rukoto waveform irregularities of a number of concentric annular formed in the central portion excluding the peripheral edge portion Provide a loudspeaker.

A predetermined molding can be performed on the film body to obtain a film molded body capable of maintaining a flat state when no load is applied without applying a tension. Since the membrane molded body forming the vibrating body included in the voice transmitter according to the present invention can maintain a flat plate state when no load is applied without applying tension, that is, it does not relax even when no tension is applied. The voice of the breathing device user can be transmitted to the outside. Further, since it is not necessary to apply tension to the film molded body when the film formed body is fixed to the frame, wrinkles are not generated in the film molded body when the film formed body is fixed to the frame.
A circular film molded body in which a large number of concentric annular corrugations are formed in the central portion excluding the outer peripheral edge portion has an appropriate rigidity, and can maintain a flat state without applying a tension when no load is applied.

A respiratory apparatus comprising a voice transmitter according to an embodiment of the present invention, comprising: an electric fan, a respiratory monitoring device, and a control device that controls the operation of the electric fan based on a detection signal of the respiratory monitoring device. FIG. (A) is a sectional side view, (b) is a front view. It is a disassembled perspective view of the unit in which the voice transmitter, the respiratory monitor device, and the control device are assembled together. It is a block diagram of the control apparatus with which the respiration apparatus of FIG. 1 is provided. It is a perspective view of the modification of the vibrating body of a voice conductor. It is a perspective view of the modification of the vibrating body of a voice conductor. It is a perspective view of the modification of the vibrating body of a voice conductor.

A respiration apparatus including a voice transmitter according to an embodiment of the present invention, which includes an electric fan, a respiration monitor apparatus, and a control device that controls the operation of the electric fan based on a detection signal of the respiration monitor apparatus. To do.
As shown in FIG. 1, the respiratory apparatus A includes a half-faced bowl-shaped face 1 that covers the nose and mouth of the user's face, and a reed valve-type intake valve 2 that is attached to the face 1. An exhaust valve 3, an electric fan 4 that is disposed upstream of the intake valve 2 with respect to the intake air flow and supplies outside air into the face body 1 through the intake valve 2, and an upstream side of the electric fan 4 with respect to the intake air flow. A filter 5 for filtering the outside air sucked by the electric fan 4 and a voice transmitter 6 are provided.
As shown in FIGS. 1 and 2, speaking tube 6, tetrahedral inside opening diameter portion 6a ₁ has a small-diameter portion 6a ₁ and the medium diameter portion 6a ₂ and the large diameter portion 6a ₃ is formed on the face piece 1 The cylindrical body 6a fitted from above and the end of the small diameter portion 6a ₁ projecting outward from the surface body are screwed from the outside of the face body, and an annular step portion between the cylindrical small diameter portion 6a ₁ and the cylindrical intermediate diameter portion 6a ₂ a bowl-shaped cover 6c for fixing the cylindrical body 6a in the facepiece 1 by 6b in cooperation with clamping the facepiece 1 around the opening, the cylindrical body in diameter 6a ₂ and the cylindrical body large-diameter portion 6a ₃ a circular vibrator 6e outer periphery abuts a face piece inside the annular step portion 6d between the inner fitted with snap-fit to the cylindrical body large-diameter portion 6a _3, the vibrating body in cooperation with the annular step portion 6d A vibrating body 6e including an annular frame 6f that fixes the vibrating body 6e to the cylindrical body 6a by sandwiching the outer peripheral edge of 6e, and an annular step 6d and the frame 6f. And an O-ring 6g that seals the sandwiching portion of the outer peripheral edge portion. The cover 6c has a plurality of openings 6c ₁ is formed, the frame 6f has an arm portion 6f ₁ connecting the two points to the positive pair on ring through the central portion of the ring.
As shown in FIGS. 1 and 2, the vibrating body 6e are a number of concentric annular wavy patterned 6e ₁ is formed in a central portion excluding the peripheral edge portion which is sandwiched between the annular step portion 6d and the frame 6f It is a film molded body. The vibrating body 6e is manufactured by performing predetermined molding on the film body. The vibrating body 6e has an appropriate rigidity, and can maintain a flat plate state when no load is applied without applying a tension. The vibrating body 6e is fixed to the cylindrical body 6a without being applied with tension by simply sandwiching the outer peripheral edge portion between the annular step portion 6d and the frame body 6f.
The intake valve 2, the electric fan 4, the filter 5, and the transmitter 6 are attached to the front surface of the face body 1, and the exhaust valve 3 is attached to the side face of the face body 1.

As shown in FIGS. 1 and 2, the respiratory apparatus A includes a respiratory monitor apparatus 7. Respiratory monitoring device 7 comprises a magnet 7a attached to the central portion of the vibrating body 6e of speaking tube 6 is provided, attached to the longitudinal center portion of the arm portion 6f ₁ of speaking tube 6, at a predetermined gap magnet And a Hall element 7b opposite to 7a.
The breathing apparatus A includes a control device 8. As shown in FIG. 3, the control device 8 includes a microcomputer 8a, a power supply IC 8b for stabilizing the voltage of the microcomputer drive power, an amplifier 8c that amplifies the detection signal of the Hall element 7b, and a high-frequency component from the amplified detection signal. A low-pass filter 8d to be removed and a pair of alarm LEDs 8e and 8f are provided. The hall element 7b is connected to the microcomputer 8a via an amplifier 8c and a low-pass filter 8d. The electric fan 4 is connected to the microcomputer 8a. The microcomputer 8a is connected to the battery 10 stored in the battery storage unit 9 via the power supply IC 8c.
The controller 8 is incorporated on the Hall element 7b and the same substrate 11, it is attached to the arm portion 6f ₁ of speaking tube 6.
As shown in FIGS. 1 and 2, the voice transmitter 6, the respiration monitor device 7, and the control device 8 are integrally assembled into a unit, and the unit is detachably attached to the opening formed in the face body 1. It has been.

The operation of the breathing apparatus A will be described.
When the respiratory apparatus A is not used, the internal pressure (gauge pressure) of the face body 1 is zero, the internal and external pressures applied to the vibrating body 6e are balanced, and the vibrating body 6e is in an unloaded state. In the following description, all the internal pressures of the face piece 1 are gauge pressures. At this time, the vibrating body 6e is in an initial state extending in a flat plate shape, the distance between the magnet 7a and the Hall element 7b is an initial value, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is also an initial value. It has become.
If the internal pressure of the face piece 1 is positive, the vibrating body 6e bulges and deforms to the outside of the face piece 1, and if the internal pressure of the face piece 1 is negative, the vibrator 6e contracts and deforms to the inside of the face piece 1.

When the breathing apparatus A is used, the battery 10 is stored in the battery storage unit 9 and the control device 8 is operated. The face piece 1 is mounted on the user's head so as to cover a part of the user's face including the nose and mouth. The annular edge portion of the face piece 1 is brought into close contact with the face to prevent the outside air from entering the face piece 1 from the contact portion between the annular edge portion and the face.
Depending on the user's exhaust air intake, the internal pressure of the face body 1 increases or decreases, a differential pressure is generated in the internal and external pressure applied to the vibrating body 6e, the vibrating body 6e is deformed from the initial state, and the magnet 7a and the Hall element 7b The distance between them changes from the initial value. The Hall element 7b detects a change from the initial value of the magnetic flux density accompanying the change, and transmits a detection signal to the microcomputer 8a of the control device 8 through the amplifier 8c and the low-pass filter 8d. The microcomputer 8a recognizes that the respiratory device A is mounted on the user's head when the amount of change from the initial value of the magnetic flux density received from the hall element 7b via the amplifier 8c and the low-pass filter 8d exceeds a predetermined value. Then, the electric fan 4 is started.
Based on the detection signal of the Hall element 7b received through the amplifier 8c and the low-pass filter 8d, the microcomputer 8a makes the internal pressure of the face piece 1 to be a positive pressure, so that the vibrating body 6e is more of the face piece 1 than the initial state. The rotational speed of the electric fan 4 is controlled so as to be deformed outward.

During exhaust, the internal pressure of the face piece 1 increases, the amount of deformation of the vibrating body 6e to the outside of the face piece 1 increases, the distance between the magnet 7a and the Hall element 7b increases, and the magnetic flux density of the magnet 7a detected by the Hall element 7b increases. Decrease. When the increase amount from the initial value of the distance exceeds a predetermined value and the decrease amount from the initial value of the magnetic flux density of the magnet 7a detected by the hall element 7b exceeds the predetermined value, the microcomputer 8a indicates that the breathing state is in the exhaust state. Then, the rotational speed of the electric fan 4 is decreased or the electric fan 4 is stopped. As a result, power consumption is saved, consumption of the battery 10 is suppressed, and clogging of the filter 5 is suppressed. During exhaust, the intake valve 2 is closed and the exhaust valve 3 is opened. Exhaust gas is discharged from the face piece 1 to the external environment through the exhaust valve 3.

During intake, the internal pressure of the face piece 1 is reduced, the amount of deformation of the vibrating body 6e to the outside of the face piece 1 is reduced, the distance between the magnet 7a and the Hall element 7b is reduced, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is reduced. To increase. When the increase amount from the initial value of the distance becomes less than a predetermined value and the decrease amount from the initial value of the magnetic flux density of the magnet 7a detected by the Hall element 7b becomes less than the predetermined value, the microcomputer 8a keeps the breathing state in the inspiration state. And the number of rotations of the electric fan 4 is increased. During intake, the intake valve 2 opens and the exhaust valve 3 closes. The outside air passes through the filter 5 to remove dust, and is then sucked into the electric fan 4 and flows into the face body 1 through the intake valve 2. As the rotational speed of the electric fan 4 increases, the amount of air flowing into the face body 1 increases, and the internal pressure of the face body 1 is maintained at a positive pressure, so that the breathing apparatus user can breathe easily.

The ventilation resistance of the filter 5 increases with time due to accumulation of dust. As a result, even if the electric fan 4 is operated, the internal pressure of the face body 1 during intake decreases with time. Eventually, the internal pressure of the face body 1 during intake becomes negative, the distance between the magnet 7a and the Hall element 7b becomes smaller than the initial value, and the magnetic flux density of the magnet 7a detected by the Hall element 7b is lower than the initial value. To increase. When the magnetic flux density of the magnet 7b detected by the Hall element 7c increases from the initial value, the microcomputer 8a recognizes that the filter 5 has expired due to clogging, and activates the LEDs 8e and 8f to generate an alarm light. The user of the breathing apparatus A is notified of the replacement of the filter 5. By replacing the filter 5, the control for keeping the internal pressure of the face piece 1 at a positive pressure becomes possible again, and the function of the breathing apparatus A is restored.

When the user of the breathing apparatus A speaks, the vibrating body 6e of the transmitter 6 vibrates and radiates the voice of the breathing apparatus user to the external environment. When the vibrator 6e of the voice transmitter 6 resonates with the voice of the breathing device user, the vibrator 6e of the voice transmitter 6 may vibrate at a high frequency with an amplitude exceeding the amplitude due to the breathing device user's breathing. In this case, the hall element 7b detects the high frequency vibration of the sound transducer vibrator 6e, and based on the detection signal of the hall element 7b, increase / decrease in the number of revolutions of the electric fan 4 or ON / OFF is repeated in a short cycle, and the battery 10 is consumed in a short time, the brush of the electric fan motor is consumed, and the electronic components incorporated in the control device 8 are deteriorated. By inputting the detection signal of the Hall element 7b to the microcomputer 8a via the low-pass filter 8d, the high frequency derived from the resonance between the voice of the respiratory device user and the vibrating body 6e of the transmitter 6 from the detection signal of the Hall element 7b. The components can be removed, and only the low frequency components derived from the breathing of the breathing apparatus user can be input to the microcomputer 8a. The consumption of the battery 10 due to the high frequency components, the consumption of the brush of the electric fan motor, and the control It is possible to prevent deterioration of electronic components incorporated in the device 8.

When the breathing apparatus A is removed from the user's head, the internal and external pressures applied to the vibrating body 6e are balanced, and the vibrating body 6e returns to the initial state of no load, and between the magnet 7a and the Hall element 7b. The distance returns to the initial value, and the magnetic flux density of the magnet 7a detected by the Hall element 7b returns to the initial value. When the state in which the magnetic flux density received from the hall element 7b has returned to the initial value continues for a predetermined time, the microcomputer 8a recognizes that the respiratory device A has been removed from the user's head, and stops the electric fan 4.

In the respiratory apparatus A, the vibrating body 6 e of the voice transmitter 6 is used as a component of the respiratory monitor apparatus 7.
In the voice transmitter 6 provided in the breathing apparatus A, film formation in which a large number of concentric annular corrugated irregularities 6e ₁ are formed in the central portion excluding the outer peripheral edge sandwiched between the annular step 6d and the frame 6f. Since the vibrating body 6e made of a body has an appropriate rigidity and can maintain a flat plate state when no load is applied without applying tension, that is, it does not loosen when no load is applied even when no tension is applied. The voice of the breathing device user can be transmitted to the outside. Further, it is not necessary to apply the tension of the vibrating body 6e when the outer peripheral edge of the vibrating body 6e is sandwiched between the annular step portion 6d and the frame body 6f and the vibrating body 6e is fixed to the cylindrical body 6a. No wrinkles are generated in the vibrating body 6e when fixing to the cylindrical body 6a.
The structure of the vibrating body 6e made of a film molded body is more complicated than that of a simple flat film vibrating body, but it is not necessary to provide a structure for applying tension to the vibrating body 6e. As a whole, the structure is simplified compared to a conventional voice transmitter having a vibrating body made of a simple flat membrane.

Instead of forming a large number of concentric annular corrugations 6e ₁ in the central part, a large number of concentric annular convex parts (annular concave parts when viewed from the opposite surface side) are formed in the central part, or FIG. As shown in FIGS. 5 and 6, a plurality of concentric discontinuous annular convex portions (discontinuous annular concave portions when viewed from the opposite side) 6e ₂ are formed in the central portion, or radial concave portions ( 6e ₃ and 6e ₄ are formed so that the rigidity of the vibrating body 6e can be increased moderately, and the vibrating body 6e can maintain a flat state without applying a tension when no load is applied. May be.
The face piece 1 may be a full face face covering the entire face of the user.
The breathing apparatus A to which the voice transmitter 6 is attached is not limited to a breathing apparatus with an electric fan provided with a breath monitoring apparatus 7 and a control apparatus 8. A breathing apparatus with an electric fan that does not include the breath monitoring apparatus 7 or the control apparatus 8, a replaceable dust mask, a gas mask, an air supply mask, or a self-contained breathing apparatus may be used.

The present invention is a transmission attached to a face of a respiratory apparatus such as a replaceable dust mask, a respiratory protective device with an electric fan, a gas mask, an air supply mask, and a self-contained breathing apparatus having a face covering part or all of the face. Widely available for voice instruments.

A breathing apparatus 1 face piece 2 intake valve 3 exhaust valve 4 electric fan 5 filter 6 speaking tube 6e vibrator 6e ₁ annular wavy patterned 6e ₂ discontinuous annular protrusion _6e 3, 6e ₄ radial recess 7 respiratory monitoring device 7a magnets, Reflector 7b Hall element, optical sensor 8 Control device 8c Amplifier 8d Low-pass filter

Claims (1)

A heat loudspeakers attached to the facepiece of a respiratory apparatus having a facepiece for covering a part or the whole of the face, comprising a vibrating body made of a film molded article capable of maintaining a flat state when no load is not applied tension, vibration speaking tube body, characterized by circular film moldings der Rukoto waveform irregularities of a number of concentric annular formed in the central portion excluding the peripheral edge portion.

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