Communication device with mouthpiece

Abstract

The present invention relates to a communication device comprising a mouthpiece (1) configured to be worn in the mouth of a subject, the mouthpiece comprising a sound conducting plate (20) configured to be bitten by a user and a vibration element (3) configured to convert a voice input into an acoustic output, the vibration element (3) being connected to the sound conducting plate (20) so as to transmit the acoustic output to the sound conducting plate (20).

Description

[Technical field]

[0001] The present invention relates to a mouthpiece suitable for underwater communication, and in particular to a mouthpiece for a diving regulator. [Background technology]

[0002] The underwater environment is less conductive to waves than air, making communication between two divers difficult.

[0003] US Patent Application Publication No. 2012 / 0213034 and US Patent No. 5,706,251 A describe a mouthpiece for a regulator mouthpiece that is worn in the mouth and includes a microphone and a bone conduction earpiece that vibrates a sound conducting plate to pass a signal through the user's teeth. Summary of the Invention [Problem to be solved by the invention]

[0004] The first problem with this type of device is that bone conduction of the acoustic signal is not optimal, and the second problem is that the lip part of the mouthpiece prevents sufficient movement of the user's lips, making the acquired signal poorly understandable.

[0005] The present invention provides a mouthpiece that overcomes the above-mentioned problems of the prior art. [Means for solving the problem]

[0006] Summary of the Invention According to one aspect, the present invention relates to a communication device comprising a mouthpiece configured to be worn in the mouth of a subject, the mouthpiece comprising a sound conducting plate configured to be bitten by a user and a vibration element configured to convert a voice input into an acoustic output, the vibration element being connected to the sound conducting plate so as to transmit the acoustic output to the sound conducting plate.

[0007] Its advantage is that it transmits the acoustic signal through the diver's teeth, forming a bone conduction earpiece.

[0008] In one embodiment, the sound conducting plate configured to be bitten by the subject includes a plurality of protrusions, the advantage of which is that the protrusions of the plate fill the grooves at the top of the teeth.

[0009] In one embodiment, the sound conducting plate is provided with an elastic coating, the thickness of the elastic coating at the top of the protrusions being smaller than the thickness of the elastic coating between the two protrusions. One advantage is that it offers an ideal compromise between bone conduction and user comfort.

[0010] In one embodiment, the vibration element is configured to vibrate in one direction and is housed between at least one or at least two stop walls configured to transmit the vibration of the vibration element to the sound conducting plate in this direction. The vibration direction is preferably substantially parallel to the plane of the sound conducting plate. The advantage is to improve the transmission of the acoustic signal to the diver's teeth while avoiding impact of the vibration element on the sound conducting plate.

[0011] In another alternative, the vibration direction is preferably substantially perpendicular to the plane of the sound conducting plate.

[0012] In one embodiment, the vibration element comprises: a first stop wall configured to transmit the vibrations of the vibration element in this vibration direction to the sound conducting plate; - housed between said first stop wall and a second wall substantially parallel to said first stop wall, The device is characterized by including a layer of absorbent material between the vibration element and the second wall.

[0013] In one embodiment, the mouthpiece is a regulator mouthpiece and includes a microphone for capturing the subject's voice.

[0014] In one embodiment, the regulator mouthpiece has a lip for receiving the user's lips, two air tubes passing through the lip, and a lip recess between the two air tubes.

[0015] One advantage is that the recess is provided substantially in the center of the lips, improving freedom of movement of the lips and thus improving the intelligibility of the received signal.

[0016] In one embodiment, the microphone is positioned between the openings of the two tubes.

[0017] In one embodiment, the regulator mouthpiece further comprises a lip portion for receiving the lips of a user, and a tube for passing air through the lip portion and defined at least in part by a wall of the lip portion.

[0018] In one embodiment, the lip of the device comprises a lip wall having: a first configuration in which the opposing walls of the lip are not in contact so that air can pass through the vent pipe 6; - designed to be deformable into a second configuration in which the opposing walls of the lip are in contact;

[0019] In one embodiment, the outer surface of the lip wall is concave when at rest.

[0020] The advantage of a deformable lip wall having a concave shape is that it reduces the force that a user must apply to close their lips, thus promoting user intelligibility and comfort.

[0021] In one embodiment, the apparatus comprises: a first part adapted to be connected to a regulator; a second part connected to the sound conducting plate; at least one rigid lateral connecting arm extending from the first portion of the frame to the second portion; The device includes a frame having:

[0022] In one embodiment, the lip wall extends from the first portion to the second portion of the frame by covering the lateral connecting arms.

[0023] In one embodiment, the first portion and the second portion each include an annulus having a lip wall extending therefrom.

[0024] In one embodiment, the lip wall is configured to deform to accommodate the flow of air through the vent tube.

[0025] In one embodiment, the lip portion includes two opposing lip walls, each configured to contact the lips of a user.

[0026] In one embodiment, the microphone is at least partially integrated with the elastomeric coating of the mouthpiece.

[0027] In one embodiment, the mouthpiece further comprises signal transmission means connected to the vibration element and / or the microphone, such as an electronic cable or an electronic ribbon cable, which may be at least partially integrated with the elastic coating of the mouthpiece.

[0028] In one embodiment, the device further comprises a signal transmission means electrically connected to the vibration element and / or the microphone by an electrical ribbon cable, the electrical ribbon cable being glued to a frame comprising a sound conducting plate and covered by overmolding with an elastic coating. [Brief description of the drawings]

[0029] [Figure 1] FIG. 2 is a perspective view of a frame of a regulator mouthpiece designed to be placed in a user's mouth. [Diagram 2] FIG. 4 is a perspective view of a mouthpiece according to a second embodiment of the present invention. [Diagram 3] FIG. 4 is a perspective view of a mouthpiece according to a second embodiment of the present invention. [Figure 4]FIG. 11 is a perspective view of an apparatus according to a third embodiment of the present invention. [Diagram 5] FIG. 2 is a diagram showing a sound conducting plate. [Figure 6] FIG. 2 is a diagram showing a cross section of a mouthpiece taken along a plane perpendicular to the surface of the sound conducting plate. [Figure 7] FIG. 2 is a diagram showing a cross section of a mouthpiece taken along a plane perpendicular to the surface of the sound conducting plate. [Figure 8A] FIG. 2 is a diagram showing a cross section of a mouthpiece taken along a plane perpendicular to the surface of the sound conducting plate. [Figure 8B] FIG. 2 is a diagram showing a cross section of a mouthpiece taken along a plane perpendicular to the surface of the sound conducting plate. [Figure 9] FIG. 13 is a cross-sectional view of a mouthpiece according to another embodiment. [Figure 10] FIG. 13 illustrates another alternative embodiment. [Figure 11] FIG. 2 shows a mouthpiece equipped with a signal transmission means. [Figure 12] FIG. 1 illustrates a molding system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] An embodiment of the invention will now be described with reference to Figure 1, which is a perspective view of the frame of a regulator mouthpiece designed to be placed in the mouth of a user. For clarity, the elastomeric coating is not shown in this figure.

[0031] Frame The mouthpiece 1 includes a frame 2 .

[0032] The frame 2 preferably comprises an elastic coating (not shown), which advantageously improves the comfort of the user, and which is preferably obtained by overmolding the frame.

[0033] The frame comprises a first connecting part 6 designed to cooperate with an equipment such as a diving regulator. This first part 6 preferably has an annular shape.

[0034] The frame also comprises at least one, and preferably two, sound-conducting plates 20 designed to be bitten by the user.

[0035] The first part 6 of the frame is mechanically connected to at least one side arm 24. This connection is advantageous to ensure the rigidity of the mouthpiece between the part in the mouth (second part) and the part connected to the regulator (first part).

[0036] The mouthpiece 1 comprises a lip portion 42, which is adapted to be covered by the lips of a user in use. The lip portion 42 comprises a tube 6 on either side of the lip portion, which tube 6 allows air to pass from the regulator channel to the subject's mouth in use. The lip portion 42 allows the lips of the user to form a tight seal between the external environment and the air vent tube 6.

[0037] The lip is preferably located between the first portion 23 of the frame and the sound conducting plate 20 .

[0038] The lips 42 extend between the breathing area including the sound conducting plate 20 and the connecting means 43. The connecting means 43 is advantageous because it allows the mouthpiece to cooperate with a diving regulator. The connecting means 43 is preferably of tubular shape whose walls are rigid.

[0039] As shown in FIG. 1, the connection means together with the frame 2 form a single part and can be connected to each other by one arm 24 or by two arms 24 .

[0040] 10, the frame may include a second annular portion 27 defining an inlet for the tube 6 to allow ventilation, and a lip is defined between the first portion 6 and the second portion 27.

[0041] Between the two arms 24, the frame may comprise a connecting bar 25. In the embodiment shown in FIG.

[0042] In another alternative embodiment shown in FIG. 10, the frame includes a position 51 for receiving a microphone located on one side of the sound conducting plate 20 .

[0043] The coating may include an overmolding of the frame 2. In particular, the overmolded coating may include a lip wall 41 configured to be placed between the teeth and lips of a user.

[0044] The mouthpiece 1 may include a slot 26. The slot 26 may extend along the connecting means 43. The slot 26 may be advantageous because it allows portions of the connecting means 43 to be modified, for example to be able to cooperate with different models of regulators.

[0045] The vent tube 6 therefore extends through the lip 42 and the connecting means 43 .

[0046] The frame 2 includes at least one sound-conducting plate 20. The sound-conducting plate 20 is positioned so as to be bitten by a user wearing the mouthpiece 1.

[0047] Vibration element The mouthpiece 1 further comprises a transducer-type vibration element which is connected to the sound-conducting plate so as to transmit vibrations of the vibration element to the sound-conducting plate.

[0048] The vibration element 3 converts audio input into acoustic output and is acoustically coupled to the diver's upper and / or lower teeth and is configured to transmit acoustic output from the diver's upper teeth through the skull and transmit the acoustic signal through the skull and jawbone to the diver's inner ear when the diver wears the mouthpiece in his or her mouth.

[0049] Bone conduction with the user The sound conducting plate 20 is designed and positioned to be acoustically connected to the user's upper teeth and to transmit the acoustic output of the diver's upper teeth, through the skull, to the cochlea and to produce audible sound in at least one of the diver's inner ears when the diver wears the mouthpiece 1.

[0050] The sound conducting plate 20 is configured to acoustically engage and connect to the surfaces of the diver's teeth and is configured to conduct vibrations of the vibration elements 3 in response to an electrical signal. The vibrations of the vibration elements 3 generate an acoustic output signal that is acoustically transmitted through the sound conducting plate to the diver's teeth and then through the diver's jaw and skull to the inner ear, including the cochlea, where it is perceived as sound.

[0051] The material of the sound conducting plate 20 may include ceramic, metal or metal alloy, or polymeric material such as an elastomeric polymer. The sound conducting plate may be sized and shaped to allow for acoustic coupling with one or more teeth of the plunger.

[0052] In certain embodiments, the sound conducting plate 20 may have a curved horizontal shape that corresponds in part to the curvature of the diver's dental arch, facilitating contact between the sound conducting plate 20 and the teeth.

[0053] The sound conducting plate 20 may also include one or more protrusions or pads or other protruding features 21 configured to improve acoustic coupling and conduction with the plunger teeth. In certain embodiments, the protrusions or studs 21 may be positioned to contact central recesses in the plunger teeth.

[0054] The sound conducting plate 20 is preferably provided with a coating of a resilient material to improve user comfort.

[0055] The thickness of this coating on top of the pad 21 is preferably less than the thickness of the coating between two pads 21 .

[0056] The different thickness profiles of the coating layer 610 are shown in Figures 6 to 8B, which represent cross sections of the mouthpiece 1 along a plane perpendicular to the surface of the sound conducting plate 620. These figures show a frame of the sound conducting plate 620 with pads or protrusions 621. The coating layer preferably comprises an elastic material. The sound conducting plate 620 preferably comprises a flat portion 622 or a substantially flat portion between two pads 621.

[0057] The pad 621 shown in the figure has a concave shape. The shape of the pad can be spherical or hemispherical, cylindrical or rectangular, protruding from the surface 622 of the sound conducting plate 620. This spherical or concave shape is advantageous because it can cooperate with the tooth grooves.

[0058] In the first embodiment shown in FIG. 6, the coating layers have a thickness of coating 611 in contact with pad 621 that is smaller than a thickness of coating 612 in contact with surface 622 of sound conducting plate 620 .

[0059] The thickness of the coating 611 in contact with the pads 621 is preferably 2 to 10 times smaller than the thickness of the coating 612 in contact with the surface 622 between the two pads 621 .

[0060] In this first embodiment, the outer surface of the coating layer 610 is curved at the level of the pads 621 .

[0061] One advantage of this shape is that it strikes a good compromise between the quality of bone conduction of the signal from the vibrating element and the comfort in the user's mouth.

[0062] 7, the tops 723 of the pads 621 protrude from the coating layer 610. Therefore, the thickness of the coating layer in the area including the tops 723 of the pads 621 is zero.

[0063] The thickness of the coating layer 610 decreases to zero towards the level of the top 723 of the pad 621 .

[0064] In this example, the coating layer 610 preferably forms a flat or substantially flat surface from which the pads 621 of the sound conducting plate 620 protrude.

[0065] One advantage of this embodiment is that it optimizes the quality of bone conduction.

[0066] In a third embodiment shown in Fig. 8A, the tops 823 of the pads 621 are flush with the surface of the coating layer 610. And the thickness of the coating layer 610 at the tops of the pads is zero or substantially zero. The thickness of the coating layer 812 between two pads 621 is preferably equal to or substantially equal to the height of the pads 621. In another alternative, not shown, the thickness of the coating layer between two pads is less than the height of the tops of the pads 823.

[0067] In a fourth embodiment shown in FIG. 8B, the coating layer 610 has a flat or substantially flat surface and the thickness of the coating layer above the top of the pads 923 is less than the thickness of the coating layer between the two pads 912.

[0068] One advantage of this third embodiment is that it obtains a better compromise between the quality of bone conduction between the sound conducting plate 620 and the user's teeth and the comfort of the user, in this case the quality of bone conduction being prioritized.

[0069] The coating layer comprises an elastic material, where the term "elastic" must be understood in contrast to the stiffness of the sound conducting plate, in other words the Young's modulus of the material of the coating layer is lower than the Young's modulus of the material of the sound conducting plate.

[0070] The coating layer preferably comprises a silicone plastic material, also known as a polysiloxane, such as polydimethylsiloxane (known by the acronym "PDMS"), or a derivative thereof. Alternatively, the coating layer comprises a material based on a thermoplastic elastomer, such as polyurethane. Such materials are advantageous because they are biocompatible and easy to use in overmolding.

[0071] The frame comprises a rigid plastic material that allows for the conduction of signals generated by the vibrating elements.

[0072] The frame is preferably made of polypropylene ("PP"), acrylonitrile butadiene styrene ("ABS") or one of their derivatives. These two materials are advantageous because they can create a chemical bond with a coating layer based on a silicone material. The chemical bond can increase the adhesion between the reinforcement and the coating layer. In particular, a material based on a thermoplastic elastomer is selected to create a chemical bond with the PP or ABS of the frame.

[0073] In one embodiment, the hardness of the reinforcement is from 10 to 30 Shore A.

[0074] In one embodiment, the vibration element 3 is arranged to vibrate in a vibration direction A. The vibration element 3 is accommodated between at least two walls 31 in the vibration direction A, and the vibration of the vibration element can be transmitted to the sound conducting plate 20. As shown in Figures 1 and 2, the vibration direction A is preferably substantially parallel to the plane of the sound conducting plate 20.

[0075] In one embodiment, shown in Fig. 5, the vibration element is housed in the vibration direction A between a stop wall 31 and a second wall 32. In this manner, the device comprises a layer of absorbent material 33 arranged between the vibration element 3 and the second wall 32. The absorbent material 33 is designed to absorb shocks between the vibration element 3 and the second wall.

[0076] The absorbent material may include, for example, a foam or an elastomer.

[0077] When the vibration element 3 vibrates, the vibration element 3 comes into contact with the stop wall 31, transmitting the vibration from the vibration element 3 to the sound conducting plate.

[0078] The advantage of the absorbent material layer 33 is that it reduces the transmission of vibrations between the vibration element 3 and the sound conducting plate 20 through the second wall 32. The absorbent material layer advantageously provides a space with sufficient clearance for the vibration element to vibrate in direct contact with the wall and transmit the vibrations to the sound conducting plate. The absorbent material thus gives the vibration element at least one degree of freedom relative to the wall. The absorbent material also allows it to remain in contact with the abutting wall when the vibration element is at rest.

[0079] Furthermore, the absorbing material is advantageous as it reduces the phase shift effect in the multiple vibrations transmitted to the sound conducting plate by the stop wall 31 and the second wall 32 .

[0080] Another advantage is that it creates a restoring force towards the stop wall 31 and movement between the two walls in a simpler, more reliable and less expensive way than the prior art.

[0081] In another embodiment, the vibration direction A may be perpendicular to the plane of the sound conducting plate 20 .

[0082] Microphone The mouthpiece 1 further comprises a microphone 5. The microphone 5 is capable of generating an electrical signal based on the diver's voice. The microphone 5 can be at least partially integrated with the elastic coating of the frame 2 and can be protected by at least one protective wall arranged in front of the sensor of the microphone. The protective wall is advantageous since it reduces the difficulties of integrating the microphone with the coating during the overmolding stage of the frame. The protective wall protects the sensor from the overmolding. In one embodiment, the microphone, or at least its detection surface, is embedded in a protective layer. The protective layer is advantageous since it protects the detection surface of the microphone and prevents it from being punctured when the frame is overmolded with an elastic material to form a coating layer.

[0083] The microphone is housed in a housing 51 in the frame, which preferably has at least one surface that protects the sensing face of the microphone during overmolding of the frame.

[0084] The mouthpiece 1 may further comprise signal transmission means connected to the microphone 5 and / or the vibration element 3. The transmission means may comprise an electronic cable and / or a ribbon cable. These transmission means may be at least partially integrated with the elastic coating of the frame.

[0085] In one embodiment, the transmission means comprises a ribbon cable. In the embodiment shown in Fig. 10, the ribbon cable 28 is electrically connected to the microphone 5. The ribbon cable is also connected to at least the vibration element 3. The ribbon cable is also connected to the remote communication device 70. For example, the ribbon cable may be connected to an electrical cable that electrically connects the ribbon cable 28 to the remote communication device 70.

[0086] The ribbon cable is designed to be placed on the frame at the same time as the frame during the overmolding process, before being covered with the coating layer. The ribbon cable is preferably fixed to the frame by an adhesive layer, such as glue. The ribbon cable is highly preferably provided with an adhesive surface. The adhesive surface can be covered with a protective film. For assembly, the protective film is removed and the ribbon cable is glued to the frame, while the adhesive surface of the ribbon cable is maintained against the frame. In a final step, the frame with the ribbon cable is overmolded with the coating layer. Such a manufacturing process is advantageous, since it is faster, more reliable and cheaper.

[0087] As shown in FIG. 10, the ribbon cable has a geometric shape that at least partially surrounds the first part 23 of the frame and extends along the arm 24 of the frame to the microphone and / or vibration element, which is positioned at the level of the sound conducting plate 20.

[0088] The remote communication device 70 may include any device capable of transmitting and / or receiving signals, particularly in a marine environment. The remote communication device 70 may include, but is not limited to, acoustic communication, radio communication, Bluetooth, and Wi-Fi devices.

[0089] Ventilation pipe A second embodiment of the present invention will now be described with reference to FIGS.

[0090] FIG. 2 is a perspective view of a mouthpiece according to a second embodiment of the invention, with the coating not shown for clarity.

[0091] FIG. 3 is a perspective view of a mouthpiece according to a second embodiment of the present invention, with the coating shown.

[0092] The mouthpiece 1 according to the second embodiment of the invention is similar to the mouthpiece of the first embodiment. However, the lip part 42 includes two ventilation tubes (61 and 62) instead of only two. Furthermore, the lip part 42 includes a recess 63 between the two tubes 61 and 62. This recess 63 has the advantage that the diver's lips have a greater degree of freedom, which improves the clarity of the sound recorded by the microphone. The recess 63 may be through, in other words the recess 63 between the two tubes opens on the other side of the lip part 42. In this embodiment, the mouthpiece is advantageous because it allows contact between the diver's lower lip and upper lip, which further improves the clarity of the sound recorded by the microphone 5 of the mouthpiece.

[0093] The recess is preferably disposed so as to face the center of the lips of a user wearing the mouthpiece 1.

[0094] In another embodiment shown in FIG. 4, the mouthpiece 1 comprises a single ventilation tube 6, and the lip 42 between the lip stop 43 and the connecting means 43 comprises a deformable portion.

[0095] Deformable lips FIG. 4 is a perspective view of an apparatus according to a third embodiment of the present invention.

[0096] In this manner, the deformable portion of the lip allows movement of the lip walls 421 of the lip 42 between a first configuration in which the opposing walls of the lip are not in contact to allow ventilation through the ventilation tube 6, and a second configuration in which the opposing lip walls 421 of the lip are in contact.

[0097] The first configuration is achieved by the pressure of the air through the tube pushing against the lip walls in opposite directions when the subject inhales or exhales.

[0098] The second configuration is achieved by pressure of the lips, particularly at the lip walls 421 on either side of the lip, until the two opposing walls meet.

[0099] The lips are designed to allow a passage between the first and second by elastic deformation of their lip walls 421 .

[0100] This deformation is advantageous because it allows more freedom for the diver's lips, thereby improving the intelligibility of the sound recorded by the microphone. In this embodiment, the mouthpiece is advantageous because it allows indirect contact between the diver's lower and upper lips, further improving the intelligibility of the sound recorded by the mouthpiece microphone 5.

[0101] FIG. 9 shows a cross-sectional view of a mouthpiece according to another embodiment.

[0102] In this embodiment, the lip wall extends from the first portion 23 of the frame to the second portion 27 of the frame, thereby forming a conduit 6 that allows for ventilation. Preferably, the first portion 23 and the second portion 27 comprise annular or tubular portions, and the lip wall extends from the annular portions of both portions (first portion and second portion).

[0103] A plurality of lip walls 421 are preferably disposed about the lateral arms (whereby the lateral arms act as mechanical support for the flexible lip walls).

[0104] The lip wall 421 preferably has a concave shape on the outside of the mouthpiece, in other words the space between the two lip walls has a shape that decreases or strictly decreases from the first and second parts 23 of the frame to the bending point (e.g. in the middle of the segment between the first and second parts).

[0105] To achieve this shape, the length of each lip wall is greater than the distance between the first and second portions. This is advantageous because it allows the user to deform the lips with less applied force. Some of the wall movement can occur without the wall elastically deforming.

[0106] The lip wall allowing such a shape to be realised can be produced by moulding.

[0107] The frame described above is placed in a molding system as shown in FIG.

[0108] The molding system is designed to mold a thermoelastic plastic material between a first part 23 and a second part 27 of a frame. The frame described above is placed between two master moulds 121 and 122 designed to receive this frame.

[0109] Two additional moulded pieces 123 and 124, not integral with each other, are inserted between the two parts 23, 27 of the frame, one facing the other, to form ventilation tubes.

[0110] These two additional molded parts 123, 124 preferably come into contact with each other to form two concave surfaces from the first frame part 23 to the second frame part 27, which, by plastic injection, cooperate with complementary surfaces of the master moulds 121 and 122 to form the lip wall 421.

[0111] The two additional dies 123, 124 in the vent pipe are not integrated so that each additional die can be removed from one side of the vent pipe.

[0112] The additional dies preferably contact each other at the points where the tube sections have the lowest height.

[0113] This advantageously allows each mold to be removed from the other side of the vent tube after injection.

[0114] The present invention aims to protect the above-mentioned method for producing a mouthpiece.

[0115] The present invention also relates to any type of communication device that is adapted to be inserted into the mouth of a subject. The mouthpiece should not be limited to only scuba regulator mouthpieces. For example, the mouthpiece of the communication device according to the present invention can relate to a mouthguard.

Claims

1. A communication device comprising a mouthpiece (1) configured to be worn in the mouth of a subject, a sound conducting plate (20) configured to be bitten by a user; a vibrating element (3) configured to convert a voice input into an acoustic output; The vibration element (3) is connected to the sound conducting plate (20) so as to transmit the acoustic output to the sound conducting plate (20). Communication device.

2. a sound-conducting plate (20) configured to be bitten by the subject, the sound-conducting plate (20) having a plurality of protrusions (21); the sound conducting plate (20) is provided with an elastic coating; 2. The communication device according to claim 1, wherein the thickness of the elastic coating at the top of the protrusion (21) is smaller than the thickness of the elastic coating between two protrusions (21).

3. The vibration element (3) is configured to vibrate in a vibration direction (A), The vibration element is a first stopping wall (31) configured to transmit vibrations of the vibration element (3) in the vibration direction (A) to the sound conducting plate (20); and a second wall (32) substantially parallel to the first stop wall, 3. A communication device according to claim 1 or 2, characterized in that the communication device comprises a layer of absorbent material (33) between the vibration element and the second wall (32).

4. The mouthpiece (1) is a regulator mouthpiece, 3. A communication device according to claim 1 or 2, characterized in that the mouthpiece further comprises a microphone (5) for capturing the subject's voice.

5. The regulator mouthpiece (1) further comprises: a lip portion (42) for inserting the lips of the user; two tubes (61, 62) for passing air through said lip (42); 5. A communication device according to claim 4, wherein the lip (42) comprises a recess (63) between two ventilation tubes (61, 62).

6. 6. A communication device according to claim 5, wherein the microphone (5) is arranged between the openings of two tubes (61, 62).

7. a lip portion (42) for inserting the lips of the user; a tube (6) for passing air through said lip (42), said tube being at least partially formed by the wall of said lip (42); The lip portion (42) a lip wall (421) of the lip portion is deformable between a first configuration in which opposing walls of the lip portion are not in contact to allow ventilation through the ventilation pipe (6) and a second configuration in which opposing walls of the lip portion are in contact; The outer surface of the lip wall (421) is concave at rest.

3. A communication device according to claim 1 or 2, which is designed.

8. The communication device a first part (23) configured to be connected to a regulator; a second part (27) connected to the sound conducting plate (20); at least one rigid lateral connecting arm (24) extending from said first portion (23) to said second portion (27) of the frame; a frame comprising:

8. The communication device according to claim 7, characterized in that the lip wall (421) extends from the first part (23) to the second part (27) of the frame by covering the lateral connecting arms (24).

9. 9. The communication device of claim 8, wherein the first portion (23) and the second portion (27) each comprise an annular portion from which the lip wall (421) extends.

10. 8. The communication device of claim 7, wherein the lip wall is designed to deform to accommodate airflow through the ventilation tube.

11. The communication device of claim 7 , wherein the lip portion comprises two opposing lip walls each configured to contact the user's lips.

12. 5. A communication device according to claim 4, wherein the microphone (5) is at least partly integrated with the elastic coating of the mouthpiece.

13. further comprising signal transmission means electrically connected to said vibration element and / or said microphone by an electrical ribbon cable (28); 5. The communication device of claim 4, wherein the electrical ribbon cable is adhered to a frame with the sound-conducting plate and covered by overmolding with an elastic coating.

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