EP1161282A1 - Oxygen inhaler mask with sound pickup device - Google Patents

Oxygen inhaler mask with sound pickup device

Info

Publication number
EP1161282A1
EP1161282A1 EP99956097A EP99956097A EP1161282A1 EP 1161282 A1 EP1161282 A1 EP 1161282A1 EP 99956097 A EP99956097 A EP 99956097A EP 99956097 A EP99956097 A EP 99956097A EP 1161282 A1 EP1161282 A1 EP 1161282A1
Authority
EP
European Patent Office
Prior art keywords
horn
cap
mask
capsule
mask according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99956097A
Other languages
German (de)
French (fr)
Other versions
EP1161282B1 (en
Inventor
Gérard Thomson-CSF Propr.Intellectuel REYNAUD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales Avionics SAS
Original Assignee
Thales Avionics SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thales Avionics SAS filed Critical Thales Avionics SAS
Publication of EP1161282A1 publication Critical patent/EP1161282A1/en
Application granted granted Critical
Publication of EP1161282B1 publication Critical patent/EP1161282B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices

Definitions

  • the present invention relates to oxygen inhaler masks with which a sound recording device is associated and which are used, in particular, by pilots of military aircraft.
  • the known masks are not satisfactory acoustically when the conditions of use are poor or when specific operations, such as voice recognition, are to be implemented.
  • the object of the present invention is to improve existing masks in order to improve their acoustic characteristics. This is achieved, in particular, by modifying the sound recording inside the mask.
  • an oxygen inhaler mask with sound pick-up device comprising a flexible cap pierced with a respiratory access and a microphone capsule placed above the access, characterized in that it comprises a horn, in that this horn is mounted in front of the capsule, with its opening facing the location where it is expected that, in the mask, the pilot's mouth will be positioned, and, considering this position of the mouth, in that the horn has its axis which passes substantially through the commissure of the lips and its opening which is substantially parallel to the lip plane, that is to say to the plane tangent to the two lips, just in front of the mouth.
  • FIG. 1 a mask according to the prior art
  • FIG. 2 a first mask according to the invention
  • FIG. 3 a second mask according to the invention
  • FIGS. 4a, 4b, 5a, 5b, 5c, 5d and 6a, 6b views of elements specific to the mask according to FIG. 3, - Figures 7 and 8, two diagrams respectively relating to the masks according to Figures 1 on the one hand and 2, 3 on the other hand.
  • the corresponding elements are designated by the same references.
  • Figure 1 shows, seen from the side, the face of a pilot and, pressed against this face and seen in vertical section, the flexible cap 1, made of natural rubber, of an oxygen inhaler mask.
  • the flexible cap 1 made of natural rubber, of an oxygen inhaler mask.
  • the rigid shell which covers the cap 1 on the side opposite the face has not been shown to simplify the drawing and because it does not contribute to the understanding of the invention.
  • the cap Relative to a horizontal plane which would pass through the commissure of the pilot's lips, the cap is pierced with a hole, A, of 34 mm in diameter located below this plane and comprises a housing, 1 0, for microphone capsule. , located above this plane.
  • the hole A constitutes the expiratory access of the cap, it allows the mounting of an exhalation valve not shown.
  • the respiratory access of the mask is placed on the left flank of the cap.
  • the housing 1 0 constitutes a kind of cavity, the walls of which form a first and a second protuberance, respectively on the outer wall and on the inner wall of the cap.
  • the first protuberance is closed while the second is pierced with a cylindrical hole.
  • a microphone capsule, 2, sold by the company SILEC under the reference S4045, is embedded in the second protuberance where it is kept in abutment on the edges of the cylindrical hole.
  • a lug 1 1 perpendicular to the outer wall of the cap constitutes a means for holding the cap in the shell; the lug has the shape of a mushroom and the cap is pressed against the internal surface of the shell with the stem of the "mushroom” which passes through a hole in the shell and the head of the "mushroom” which is pressed against the surface outer shell.
  • This lug like the walls of the housing 1 0, is made of the same material as the rest of the cap.
  • the assembly according to FIG. 1 has various faults, in particular: too great sensitivity to parasitic noise, reduced and non-flat bandwidth beyond 4 kHz, tendency to acoustic saturation when the pilot speaks aloud ...
  • a first implementation of the mask according to the invention it has been proposed to improve the acoustic functioning, while retaining the original cap.
  • a search for more efficient microphone capsules was naturally carried out, but above all the position of the capsule in the cap has been redesigned, means have been used to concentrate the useful acoustic emissions on the capsule and to 'Other means have been provided to limit the phenomena which can lead to saturation of the capsule and to limit the noises linked to the helmet such as the noises of opening and closing of the valves and valves for oxygen intake and exhalation.
  • Figure 2 differs from Figure 1 only with regard to the microphone part. Indeed the cap 1 remains unchanged but the microphone capsule is no longer encrusted in the housing 1 0; in its place an adaptation part S partially penetrates into the housing where it is stuck; the part of the part S outside the housing has an arm at the end of which is mounted a microphone unit, E, with a horn C and, at the rear of the horn, an acoustic chamber G whose side wall is pierced with holes. Inside the chamber is arranged a microphone capsule, 2, sold by the company Panasonic under the reference WM53; the holes drilled in the chamber ensure a better functioning of the capsule by performing a high-pass filtering with a cut-off frequency of the order of 1 00 Hz.
  • the axis of the horn passes substantially through the commissure of the pilot's lips and that the opening of the horn is situated in a plane substantially parallel to the lip plane, that is to say to the plane tangent to the two lips, just in front of the mouth; the labial plane is perpendicular to the plane of Figure 2, its trace in the plane of Figure 2 has been drawn in center line.
  • a deflector, D constituted by an aluminum plate, is interposed between the location of the capsule 2 and the access A; this plate is screwed into the cap 1 at its upper stop located a little above the access A.
  • FIG. 3 A second implementation of the mask according to the invention is illustrated in FIG. 3. It is no longer a question here of a mask, according to the prior art, adapted according to the invention, but of a mask specially designed for implementing the invention.
  • the flexible cap 1 has been re-studied:
  • the housing 1 0 has been reduced in volume and no longer forms a protrusion on the outer wall of the cap; this reduction in volume of the housing 10 makes it possible to increase the space available towards the bottom of the mask, which allows optimal placement of the microphone assembly in the axis of the mouth and makes it possible to propose removable horns produced in different sizes, that is to say in different book heights, in order to position the opening of the horn taking into account the morphology of the lower face of the user of the mask.
  • the horn is offered in four different heights between 1 0 and 1 8 mm; the objective is to make the distance between the lips and the horn as small as the condition of "non-discomfort" allows, which means that the lips are never in contact with the horn; in FIG. 3, this possibility of choosing between several heights of horns has been illustrated by a first horn in solid line, adapted to the position of the lips of the user and a second horn set back from the first and the front of which is drawn in broken line.
  • FIGS. 4a, 4b show this adaptation piece seen from above and seen from the side, with an upper part in a bowl and a lower part pierced with a cylindrical hole.
  • FIGS. 5a, 5b, 5c relate to this microphone assembly which comprises: the horn, referenced C, with the acoustic screen, referenced F, and the acoustic chamber, referenced G, with its front part which constitutes the housing for microphone capsule and its rear part laterally pierced with holes.
  • Figure 5a is a longitudinal sectional view of the horn C with the screen F.
  • Figure 5b is a view, also in longitudinal section, of the acoustic chamber G; this figure shows a circular groove, T, which surrounds the chamber G in its front part and which serves as a housing for an O-ring, not shown; this O-ring is intended to ensure a good mechanical connection horn-chamber after fitting of these two parts into one another.
  • This solution allows easy assembly-disassembly, without tools, of the horn, for maintenance operations.
  • the horn has an opening of elliptical section, the largest dimension of which is parallel to the commissure of the lips of the user.
  • FIG. 5d is a view, in section, perpendicular to the axis of the horn, relating to the microphone assembly in the case where this assembly does not comprise, at the base of the horn, a single microphone capsule but two capsules, 2, 2 '; this is possible due to the small size of the capsules used.
  • the two capsules are mounted side by side in a space whose largest dimension is horizontal and parallel to the commissure of the lips of the user. It should be noted that FIGS.
  • 5a, 5b, 5c are the same for a microphone assembly with a single capsule and for a microphone assembly with two capsules; it should also be noted that in the case of two capsules, each capsule is connected to the on-board electronics by a different pair of wires, this makes it possible, in certain applications, to have a replacement capsule for the case where the capsule usually used would break down and, in other applications, to dedicate one of the two capsules to a voice-activated system.
  • the adaptation piece 5 according to FIGS. 4a, 4b must be modified: its lower part pierced with a hole must be widened and the hole enlarged so that it can be introduced therein. the rear part of the microphone assembly E.
  • the deflector D has been improved: it is no longer a practically flat part but a curved part better suited to its role as an acoustic screen.
  • Figure 3 the deflector D is seen from the side; two figures, 6a and 6b, again show the deflector but viewed respectively from above and from the side, with this second side view which is at right angles to the first and which is taken from the side of the cap 1 situated below of the deflector.
  • three holes appear which allow the fixing of the deflector by screws in the cap 1; these holes are distributed over a flat half-collar whose edge concave constitutes the convex edge of a curved crescent-shaped part.
  • Figures 7 and 8 are two diagrammatic type representations relating respectively to a mask according to the prior art and according to the invention.
  • the signals supplied by the capsule are of a very low level and need to be amplified in a pre-amplifier before being transmitted, via a connection cable K provided with a connector J, to the on-board electronics of the aircraft;
  • the connector used for the pilot masks is a releasable connector in the sense that the two complementary sockets, one male, the other female, which compose it, separate in the event of strong traction on the cable connection.
  • the signals supplied by the capsule are of a sufficient level so as not to require a preamplifier between the capsule and the connection cable.
  • K provided with its releasable connector J.
  • the present invention is not limited to the examples described but relates to all inhaler masks provided with a microphone device with a horn, the opening of which is placed in front of the pilot's mouth.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The invention concerns oxygen inhaler masks with sound pickup device wherein the microphone capsule (2) of the sound pickup device (E) is arranged at the base of a horn (C) whereof the opening is placed in front of the mask user's mouth. The invention is particularly useful in masks for aeroplane pilots.

Description

MASQUE INHALATEUR D'OXYGENE AVEC DISPOSITIF DE PRISE DE SON . OXYGEN INHALER MASK WITH SOUND TAKING DEVICE.
La présente invention concerne les masques inhalateurs d'oxygène auxquels est associé un dispositif de prise de son et qui sont utilisés, en particulier, par les pilotes d'avions d'armes.The present invention relates to oxygen inhaler masks with which a sound recording device is associated and which are used, in particular, by pilots of military aircraft.
De tels masques sont connus et l'un d'entre eux sera décrit dans ce qui suit.Such masks are known and one of them will be described in the following.
Les masques connus ne donnent pas satisfaction sur le plan acoustique lorsque les conditions d'utilisation sont mauvaises ou que des fonctionnements spécifiques, tels que la reconnaissance vocale, sont à mettre en œuvre.The known masks are not satisfactory acoustically when the conditions of use are poor or when specific operations, such as voice recognition, are to be implemented.
Le but de la présente invention est de perfectionner les masques existants afin d'améliorer leurs caractéristiques acoustiques. Ceci est obtenu, en particulier, par modification de la prise de son à l 'intérieur du masque.The object of the present invention is to improve existing masks in order to improve their acoustic characteristics. This is achieved, in particular, by modifying the sound recording inside the mask.
Selon l'invention il est proposé un masque inhalateur d'oxygène avec dispositif de prise de son comportant une calotte souple percée d'un accès respiratoire et une capsule microphonique disposée au-dessus de l'accès, caractérisé en ce qu'il comporte un cornet, en ce que ce cornet est monté en avant de la capsule, avec son ouverture tournée vers l'emplacement où il est prévu que, dans le masque, vienne se positionner la bouche du pilote, et, considérant cette position de la bouche, en ce que le cornet a son axe qui passe sensiblement par la commissure des lèvres et son ouverture qui est sensiblement parallèle au plan labial c'est- à-dire au plan tangent aux deux lèvres, juste en avant de la bouche.According to the invention there is provided an oxygen inhaler mask with sound pick-up device comprising a flexible cap pierced with a respiratory access and a microphone capsule placed above the access, characterized in that it comprises a horn, in that this horn is mounted in front of the capsule, with its opening facing the location where it is expected that, in the mask, the pilot's mouth will be positioned, and, considering this position of the mouth, in that the horn has its axis which passes substantially through the commissure of the lips and its opening which is substantially parallel to the lip plane, that is to say to the plane tangent to the two lips, just in front of the mouth.
La présente invention sera mieux comprise et d'autres caractéristiques apparaîtront à l'aide de la description ci-après et des figures s'y rapportant qui représentent : - la figure 1 , un masque selon l'art antérieur,The present invention will be better understood and other characteristics will appear with the aid of the description below and of the figures relating thereto which represent: FIG. 1, a mask according to the prior art,
- la figure 2, un premier masque selon l'invention,FIG. 2, a first mask according to the invention,
- la figure 3, un second masque selon l'invention,FIG. 3, a second mask according to the invention,
- les figures 4a, 4b, 5a, 5b, 5c, 5d et 6a, 6b des vues d'éléments propres au masque selon la figure 3, - les figures 7 et 8, deux schémas relatifs respectivement aux masques selon les figures 1 d 'une part et 2, 3 d 'autre part. Sur les différentes figures les éléments correspondants sont désignés par les mêmes repères. La figure 1 représente, vu de côté, le visage d'un pilote et, plaquée sur ce visage et vue en coupe verticale, la calotte souple 1 , en caoutchouc naturel, d 'un masque inhalateur d'oxygène. Dans la représentation selon la figure 1 , comme d'ailleurs dans celles selon les figures 2 et 3, seule la calotte est vue en coupe. De même sur la figure 1 et sur les figures 2 et 3 la coquille rigide qui recouvre la calotte 1 du côté opposé au visage, n'a pas été représentée pour simplifier le dessin et parce qu'elle n'apporte rien à la compréhension de l'invention.FIGS. 4a, 4b, 5a, 5b, 5c, 5d and 6a, 6b views of elements specific to the mask according to FIG. 3, - Figures 7 and 8, two diagrams respectively relating to the masks according to Figures 1 on the one hand and 2, 3 on the other hand. In the various figures, the corresponding elements are designated by the same references. Figure 1 shows, seen from the side, the face of a pilot and, pressed against this face and seen in vertical section, the flexible cap 1, made of natural rubber, of an oxygen inhaler mask. In the representation according to FIG. 1, as moreover in those according to FIGS. 2 and 3, only the cap is seen in section. Likewise in FIG. 1 and in FIGS. 2 and 3 the rigid shell which covers the cap 1 on the side opposite the face, has not been shown to simplify the drawing and because it does not contribute to the understanding of the invention.
Par rapport à un plan horizontal qui passerait par la commissure des lèvres du pilote, la calotte est percée d'un trou, A, de 34 mm de diamètre situé au-dessous de ce plan et comporte un logement, 1 0, pour capsule microphonique, situé au-dessus de ce plan.Relative to a horizontal plane which would pass through the commissure of the pilot's lips, the cap is pierced with a hole, A, of 34 mm in diameter located below this plane and comprises a housing, 1 0, for microphone capsule. , located above this plane.
Le trou A constitue l'accès expiratoire de la calotte, il permet le montage d'une soupape d'expiration non représentée. L'accès respiratoire du masque est placé sur le flanc gauche de la calotte. Le logement 1 0 constitue une sorte de cavité dont les parois forment une première et une seconde excroissance, respectivement sur la paroi externe et sur la paroi interne de la calotte. La première excroissance est fermée tandis que la seconde est percée d'un trou cylindrique. Une capsule microphonique, 2, commercialisée par la société SILEC sous la référence S4045, est incrustée dans la seconde excroissance où elle se maintient en appui sur les bords du trou cylindrique.The hole A constitutes the expiratory access of the cap, it allows the mounting of an exhalation valve not shown. The respiratory access of the mask is placed on the left flank of the cap. The housing 1 0 constitutes a kind of cavity, the walls of which form a first and a second protuberance, respectively on the outer wall and on the inner wall of the cap. The first protuberance is closed while the second is pierced with a cylindrical hole. A microphone capsule, 2, sold by the company SILEC under the reference S4045, is embedded in the second protuberance where it is kept in abutment on the edges of the cylindrical hole.
Un ergot 1 1 perpendiculaire à la paroi externe de la calotte constitue un moyen de maintien de la calotte dans la coquille; l'ergot a une forme de champignon et la calotte se trouve plaquée contre la surface interne de la coquille avec la tige du "champignon" qui passe par un trou de la coquille et la tête du "champignon" qui se trouve plaquée contre la surface externe de la coquille. Cet ergot, comme d'ailleurs les parois du logement 1 0, est réalisé dans la même matière que le reste de la calotte.A lug 1 1 perpendicular to the outer wall of the cap constitutes a means for holding the cap in the shell; the lug has the shape of a mushroom and the cap is pressed against the internal surface of the shell with the stem of the "mushroom" which passes through a hole in the shell and the head of the "mushroom" which is pressed against the surface outer shell. This lug, like the walls of the housing 1 0, is made of the same material as the rest of the cap.
Le montage selon la figure 1 présente différents défauts, en particulier : trop grande sensibilité aux bruits parasites, bande passante réduite et non plate au-delà de 4 kHz, tendance à la saturation acoustique lorsque le pilote parle à haute voix....The assembly according to FIG. 1 has various faults, in particular: too great sensitivity to parasitic noise, reduced and non-flat bandwidth beyond 4 kHz, tendency to acoustic saturation when the pilot speaks aloud ...
Dans une première mise en œuvre du masque selon l'invention il a été proposé d'améliorer le fonctionnement acoustique, tout en conservant la calotte d'origine. Pour cela, en particulier, une recherche de capsules microphoniques plus performantes a été tout naturellement effectuée mais surtout la position de la capsule dans la calotte a été repensée, des moyens ont été mis en œuvre pour concentrer les émissions acoustiques utiles sur la capsule et d 'autres moyens ont été prévus pour limiter les phénomènes pouvant entraîner la saturation de la capsule et pour limiter les bruits liés au casque tels que les bruits d'ouverture et de fermeture des clapets et soupapes d'admission d'oxygène et d'expiration.In a first implementation of the mask according to the invention, it has been proposed to improve the acoustic functioning, while retaining the original cap. For this, in particular, a search for more efficient microphone capsules was naturally carried out, but above all the position of the capsule in the cap has been redesigned, means have been used to concentrate the useful acoustic emissions on the capsule and to 'Other means have been provided to limit the phenomena which can lead to saturation of the capsule and to limit the noises linked to the helmet such as the noises of opening and closing of the valves and valves for oxygen intake and exhalation.
La figure 2 ne se distingue de la figure 1 qu'en ce qui concerne la partie microphonique. En effet la calotte 1 reste inchangée mais la capsule microphonique ne se trouve plus incrustée dans le logement 1 0 ; à sa place une pièce d'adaptation S pénètre pour partie dans le logement où elle se trouve coincée ; la partie de la pièce S à l'extérieur du logement présente un bras au bout duquel est monté un ensemble microphonique, E, avec un cornet C et, à l'arrière du cornet, une chambre acoustique G dont la paroi latérale est percée de trous. A l'intérieur de la chambre est disposée une capsule microphonique, 2, commercialisée par la société PANASONIC sous la référence WM53 ; les trous percés dans la chambre assurent un meilleur fonctionnement de la capsule en réalisant un filtrage passe-haut avec une fréquence de coupure de l'ordre de 1 00 Hz. II est à noter que l'axe du cornet, représenté par un trait d'axe sur la figure 2, passe sensiblement par la commissure des lèvres du pilote et que l'ouverture du cornet est située dans un plan sensiblement parallèle au plan labial c'est-à-dire au plan tangent aux deux lèvres, juste en avant de la bouche ; le plan labial est perpendiculaire au plan de la figure 2, sa trace dans le plan de la figure 2 a été dessinée en trait d'axe.Figure 2 differs from Figure 1 only with regard to the microphone part. Indeed the cap 1 remains unchanged but the microphone capsule is no longer encrusted in the housing 1 0; in its place an adaptation part S partially penetrates into the housing where it is stuck; the part of the part S outside the housing has an arm at the end of which is mounted a microphone unit, E, with a horn C and, at the rear of the horn, an acoustic chamber G whose side wall is pierced with holes. Inside the chamber is arranged a microphone capsule, 2, sold by the company Panasonic under the reference WM53; the holes drilled in the chamber ensure a better functioning of the capsule by performing a high-pass filtering with a cut-off frequency of the order of 1 00 Hz. It should be noted that the axis of the horn, represented by a line d axis in Figure 2, passes substantially through the commissure of the pilot's lips and that the opening of the horn is situated in a plane substantially parallel to the lip plane, that is to say to the plane tangent to the two lips, just in front of the mouth; the labial plane is perpendicular to the plane of Figure 2, its trace in the plane of Figure 2 has been drawn in center line.
Afin de limiter l'arrivée, dans la capsule, de bruits perturbateurs provoquée par l 'ouverture de la soupape d'expiration disposée dans l'accès A, lorsque l 'utilisateur parle, un déflecteur, D, constitué par une plaque en aluminium, est interposé entre l 'emplacement de la capsule 2 et l'accès A ; cette plaque est vissée dans la calotte 1 au niveau de son arrête supérieure située un peu au-dessus de l'accès A.In order to limit the arrival, in the capsule, of disturbing noises caused by the opening of the exhalation valve arranged in the access A, when the user speaks, a deflector, D, constituted by an aluminum plate, is interposed between the location of the capsule 2 and the access A; this plate is screwed into the cap 1 at its upper stop located a little above the access A.
Une deuxième mise en œuvre du masque selon l 'invention est illustrée par la figure 3. Il ne s'agit plus, ici, d'un masque, d'après l'art antérieur, adapté selon l'invention, mais d'un masque spécialement conçu pour la mise en œuvre de l'invention.A second implementation of the mask according to the invention is illustrated in FIG. 3. It is no longer a question here of a mask, according to the prior art, adapted according to the invention, but of a mask specially designed for implementing the invention.
La calotte souple 1 a été réétudjée :The flexible cap 1 has been re-studied:
- le logement 1 0 a été réduit en volume et ne forme plus une excroissance sur la paroi externe de la calotte; cette réduction de volume du logement 1 0 permet d'augmenter l'espace disponible vers le fond du masque, ce qui autorise un placement optimal de l'ensemble microphonique dans l'axe de la bouche et permet de proposer des cornets amovibles réalisés en différents tailles, c'est-à-dire en différentes hauteurs de carnet, afin de positionner l'ouverture du cornet en tenant compte de la morphologie du bas du visage de l'utilisateur du masque. Dans l'exemple décrit le cornet est proposé en quatre hauteurs différentes comprises entre 1 0 et 1 8 mm ; l'objectif visé est de rendre la distance lèvres-cornet aussi petite que le permet la condition de "non- gêne" qui veut que les lèvres ne soient jamais en contact avec le cornet; sur la figure 3 cette possibilité de choisir entre plusieurs hauteurs de cornets a été illustrée par un premier cornet en trait plein, adapté à la position des lèvres de l'utilisateur et un deuxième cornet en retrait du premier et dont l'avant est dessiné en trait interrompu.- The housing 1 0 has been reduced in volume and no longer forms a protrusion on the outer wall of the cap; this reduction in volume of the housing 10 makes it possible to increase the space available towards the bottom of the mask, which allows optimal placement of the microphone assembly in the axis of the mouth and makes it possible to propose removable horns produced in different sizes, that is to say in different book heights, in order to position the opening of the horn taking into account the morphology of the lower face of the user of the mask. In the example described, the horn is offered in four different heights between 1 0 and 1 8 mm; the objective is to make the distance between the lips and the horn as small as the condition of "non-discomfort" allows, which means that the lips are never in contact with the horn; in FIG. 3, this possibility of choosing between several heights of horns has been illustrated by a first horn in solid line, adapted to the position of the lips of the user and a second horn set back from the first and the front of which is drawn in broken line.
- six ergots supplémentaires, dont deux 1 1 ' et 1 1 " apparaissent sur la figure 3, ont été ajoutés ; ces six ergots ont la même forme et la même constitution que l 'ergot 1 1 et, comme lui, sont perpendiculaires à la face externe de la calotte. Les ergots 1 1 et 1 1 ' sont situés de part et d'autre de l'accès A; deux des quatre antres ergots sont situés sur le flanc gauche de la calotte, de part et d 'autre de l'accès respiratoire tandis que les deux derniers ergots sont situés sur le flanc droit de la calotte, en symétrie des deux ergots du flanc gauche. Ces ergots supplémentaires permettent d 'améliorer le maintien de la calotte à l'intérieur de la coquille, de réduire les vibrations parasites basses fréquences de la calotte et donc les perturbations qu'elles amènent dans la capsule microphonique, en particulier lorsque l'utilisateur du masque parle.- six additional pins, two of which 1 1 'and 1 1 "appear in Figure 3, have been added; these six pins have the same shape and the same constitution as the lug 1 1 and, like him, are perpendicular to the external face of the cap. The pins 1 1 and 1 1 'are located on either side of the access A; two of the four other pins are located on the left side of the cap, on either side of the respiratory access while the last two pins are located on the right side of the cap, in symmetry of the two pins of the left side . These additional lugs make it possible to improve the maintenance of the cap inside the shell, to reduce the parasitic low frequency vibrations of the cap and therefore the disturbances which they bring about in the microphone capsule, in particular when the user of the mask speaks.
La réduction du volume du logement 1 0 a entraîné une réduction correspondante de la partie de la pièce d'adaptation S qui pénètre dans le logement 1 0. Les figures 4a, 4b montrent cette pièce d'adaptation vue de dessus et vue de côté, avec une partie supérieure en cuvette et une partie inférieure percée d'un trou cylindrique.The reduction in the volume of the housing 1 0 has resulted in a corresponding reduction in the part of the adaptation piece S which enters the housing 1 0. FIGS. 4a, 4b show this adaptation piece seen from above and seen from the side, with an upper part in a bowl and a lower part pierced with a cylindrical hole.
L'ensemble microphonique E est pratiquement inchangé ; il faut noter toutefois l'adjonction d'un écran acoustique, F, au niveau de l'ouverture du cornet ; cet écran acoustique est constitué par un fin treillis métallique en acier inoxydable; il est à noter que l'écran acoustique peut être constitué, de façon classique, de mousse ou de tissu mais que ces matières sont moins bien adaptées à l'utilisation dans un masque. Les figures 5a, 5b, 5c sont relatives à cet ensemble microphonique qui comporte : le cornet, référencé C, avec l'écran acoustique, référencé F, et la chambre acoustique, référencée G, avec sa partie avant qui constitue le logement pour capsule microphonique et sa partie arrière percée latéralement de trous. La figure 5a est une vue longitudinale en coupe du cornet C avec l'écran F. La figure 5b est une vue, également en coupe longitudinale, de la chambre acoustique G ; cette figure montre une rainure circulaire, T, qui entoure la chambre G dans sa partie avant et qui sert de logement à un joint torique, non représenté ; ce joint torique est destiné à assurer une bonne liaison mécanique cornet-chambre après emboîtage de ces deux pièces l'une dans l 'autre. Cette solution autorise un montage-démontage aisé, sans outil, du cornet, pour les opérations de maintenance. Il est à noter par ailleurs que comme le montre la figure 5c, le cornet a une ouverture de section elliptique dont la plus grande dimension est parallèle à la commissure des lèvres de l 'utilisateurThe microphone unit E is practically unchanged; note however the addition of an acoustic screen, F, at the opening of the horn; this acoustic screen is made up of a fine stainless steel wire mesh; it should be noted that the acoustic screen may consist, in a conventional manner, of foam or fabric but that these materials are less well suited for use in a mask. FIGS. 5a, 5b, 5c relate to this microphone assembly which comprises: the horn, referenced C, with the acoustic screen, referenced F, and the acoustic chamber, referenced G, with its front part which constitutes the housing for microphone capsule and its rear part laterally pierced with holes. Figure 5a is a longitudinal sectional view of the horn C with the screen F. Figure 5b is a view, also in longitudinal section, of the acoustic chamber G; this figure shows a circular groove, T, which surrounds the chamber G in its front part and which serves as a housing for an O-ring, not shown; this O-ring is intended to ensure a good mechanical connection horn-chamber after fitting of these two parts into one another. This solution allows easy assembly-disassembly, without tools, of the horn, for maintenance operations. It should also be noted that, as shown in FIG. 5c, the horn has an opening of elliptical section, the largest dimension of which is parallel to the commissure of the lips of the user.
La figure 5d est une vue, en coupe, perpendiculaire à l'axe du cornet, relative à l'ensemble microphonique dans le cas où cet ensemble ne comporte pas, à la base du cornet, une seule capsule microphonique mais deux capsules, 2,2'; cela est possible du fait de la petite taille des capsules employées. Les deux capsules sont montées côte à côte dans un espace dont la plus grande dimension est horizontale et parallèle à la commissure des lèvres de l 'utilisateur. Il est à noter que les figures 5a, 5b, 5c sont les mêmes pour un ensemble microphonique à une seule capsule et pour un ensemble microphonique à deux capsules; il est également à noter que dans le cas de deux capsules, chaque capsule est reliée à l'électronique de bord par une paire de fils différente, ceci permet, dans certaines applications, d 'avoir une capsule de rechange pour le cas où la capsule habituellement utilisée tomberait en panne et, dans d'autres applications, de dédier l'une des deux capsules à un système à commande vocale. Bien entendu dans le cas d 'un ensemble microphonique à deux capsules la pièce d'adaptation 5 selon les figures 4a, 4b doit être modifiée : sa partie inférieure percée d'un trou doit être élargie et le trou agrandi pour que puisse y être introduite la partie arrière de l'ensemble microphonique E. Le déflecteur D a été amélioré : ce n'est plus une pièce pratiquement plate mais une pièce galbée mieux adaptée à son rôle d'écran acoustique. Sur la figure 3 le déflecteur D est vu de côté ; deux figures, 6a et 6b, montrent à nouveau le déflecteur mais vu respectivement de dessus et de côté, avec cette seconde vue de côté qui est à angle droit par rapport à la première et qui est prise du côté de la calotte 1 situé en dessous du déflecteur. Sur la figure 6a apparaissent trois trous qui permettent la fixation par vis du déflecteur dans la calotte 1 ; ces trous sont répartis sur une demi-collerette plate dont le bord concave constitue le bord convexe d'une partie bombée en forme de croissant.FIG. 5d is a view, in section, perpendicular to the axis of the horn, relating to the microphone assembly in the case where this assembly does not comprise, at the base of the horn, a single microphone capsule but two capsules, 2, 2 '; this is possible due to the small size of the capsules used. The two capsules are mounted side by side in a space whose largest dimension is horizontal and parallel to the commissure of the lips of the user. It should be noted that FIGS. 5a, 5b, 5c are the same for a microphone assembly with a single capsule and for a microphone assembly with two capsules; it should also be noted that in the case of two capsules, each capsule is connected to the on-board electronics by a different pair of wires, this makes it possible, in certain applications, to have a replacement capsule for the case where the capsule usually used would break down and, in other applications, to dedicate one of the two capsules to a voice-activated system. Of course in the case of a microphone set with two capsules, the adaptation piece 5 according to FIGS. 4a, 4b must be modified: its lower part pierced with a hole must be widened and the hole enlarged so that it can be introduced therein. the rear part of the microphone assembly E. The deflector D has been improved: it is no longer a practically flat part but a curved part better suited to its role as an acoustic screen. In Figure 3 the deflector D is seen from the side; two figures, 6a and 6b, again show the deflector but viewed respectively from above and from the side, with this second side view which is at right angles to the first and which is taken from the side of the cap 1 situated below of the deflector. In FIG. 6a, three holes appear which allow the fixing of the deflector by screws in the cap 1; these holes are distributed over a flat half-collar whose edge concave constitutes the convex edge of a curved crescent-shaped part.
Les figures 7 et 8 sont deux représentations de type schéma- bloc relatives respectivement à un masque selon l'art antérieur et selon l 'invention. Dans le cas de la figure 7, avec un masque de pilote équipé d'une capsule microphonique SILEC S4045, les signaux fournis par la capsule sont d'un niveau très faible et nécessitent d'être amplifiés dans un pré-amplificateur avant d'être transmis, via un câble de raccordement K muni d'un connecteur J, vers l'électronique de bord de l 'avion ; il est à noter que le connecteur utilisé pour les masques de pilote est un connecteur largable en ce sens que les deux prises complémentaires, l'une mâle, l'autre femelle, qui le composent, se séparent en cas de forte traction sur le câble de raccordement. Dans le cas de la figure 8, avec un masque de pilote équipé d 'une capsule microphonique PANASONIC WM53, les signaux fournis par la capsule sont d'un niveau suffisant pour ne pas nécessiter de pré-amplificateur entre la capsule et le câble de raccordement K muni de son connecteur largable J.Figures 7 and 8 are two diagrammatic type representations relating respectively to a mask according to the prior art and according to the invention. In the case of FIG. 7, with a pilot mask equipped with a SILEC S4045 microphone capsule, the signals supplied by the capsule are of a very low level and need to be amplified in a pre-amplifier before being transmitted, via a connection cable K provided with a connector J, to the on-board electronics of the aircraft; it should be noted that the connector used for the pilot masks is a releasable connector in the sense that the two complementary sockets, one male, the other female, which compose it, separate in the event of strong traction on the cable connection. In the case of FIG. 8, with a pilot mask equipped with a PANASONIC WM53 microphone capsule, the signals supplied by the capsule are of a sufficient level so as not to require a preamplifier between the capsule and the connection cable. K provided with its releasable connector J.
La présente invention n'est pas limitée aux exemples décrits mais concerne tous les masques inhalateurs munis d'un dispositif microphonique avec cornet dont l'ouverture est placée devant la bouche du pilote. The present invention is not limited to the examples described but relates to all inhaler masks provided with a microphone device with a horn, the opening of which is placed in front of the pilot's mouth.

Claims

REVENDICATIONS
1 . Masque inhalateur d 'oxygène avec dispositif de prise de son comportant une calotte souple ( 1 ) percée d'un accès expiratoire (A) et une capsule microphonique (2) disposée au-dessus de l'accès, caractérisé en ce qu'il comporte un cornet (C), en ce que ce cornet est monté en avant de la capsule, avec son ouverture tournée vers l'emplacement où il est prévu que, dans le masque, vienne se positionner la bouche du pilote, et, considérant cette position de la bouche, en ce que le cornet a son axe qui passe sensiblement par la commissure des lèvres et son ouverture qui est sensiblement parallèle au plan labial c'est-à-dire au plan tangent aux deux lèvres, juste en avant de la bouche.1. Oxygen inhaler mask with sound recording device comprising a flexible cap (1) pierced with an expiratory access (A) and a microphone capsule (2) disposed above the access, characterized in that it comprises a horn (C), in that this horn is mounted in front of the capsule, with its opening facing the location where it is expected that, in the mask, the pilot's mouth will be positioned, and, considering this position of the mouth, in that the horn has its axis which passes substantially through the commissure of the lips and its opening which is substantially parallel to the labial plane, that is to say to the plane tangent to the two lips, just in front of the mouth .
2. Masque selon la revendication 1 , caractérisé en ce que l'ouverture du cornet (C) est de forme elliptique avec la plus grande dimension de l'ellipse qui est parallèle à la commissure des lèvres.2. Mask according to claim 1, characterized in that the opening of the horn (C) is elliptical in shape with the largest dimension of the ellipse which is parallel to the commissure of the lips.
3. Masque selon la revendication 1 , caractérisé en ce que le cornet (C) comporte un écran acoustique (F) disposé dans son ouverture.3. Mask according to claim 1, characterized in that the horn (C) has an acoustic screen (F) disposed in its opening.
4. Masque selon la revendication 3, caractérisé en ce que l'écran (F) est constitué par un treillis métallique. 4. Mask according to claim 3, characterized in that the screen (F) consists of a wire mesh.
5. Masque selon la revendication 1 , caractérisé en ce qu'il comporte un déflecteur (D) solidaire de la calotte et disposé entre la capsule (2) et l'accès expiratoire (A).5. Mask according to claim 1, characterized in that it comprises a deflector (D) integral with the cap and disposed between the capsule (2) and the expiratory access (A).
6. Masque selon l'une quelconque des revendications précédentes, comportant un câble (K) et une des deux prises complémentaires d'un connecteur largable (J), branchée sur une première extrémité du câble, caractérisé en ce que la seconde extrémité du câble est directement branchée sur la cellule (2) .6. Mask according to any one of the preceding claims, comprising a cable (K) and one of the two complementary sockets of a releasable connector (J), connected to a first end of the cable, characterized in that the second end of the cable is directly connected to the cell (2).
7. Masque selon la revendication 1 , caractérisé en ce qu'il comporte plusieurs ergots ( 1 1 , 1 1 ' , 1 1 ") solidaires de la calotte ( 1 ) et montés sensiblement perpendiculairement à la face externe de la calotte.7. Mask according to claim 1, characterized in that it comprises several lugs (1 1, 1 1 ', 1 1 ") integral with the cap (1) and mounted substantially perpendicular to the outer face of the cap.
8. Masque selon la revendication 1 , caractérisé en ce qu'il comporte une capsule microphonique supplémentaire (2') et en ce que les deux capsules (2,2') sont montées côte à côte à la base du cornet. 8. Mask according to claim 1, characterized in that it comprises an additional microphone capsule (2 ') and in that the two capsules (2,2') are mounted side by side at the base of the horn.
EP99956097A 1998-11-25 1999-11-19 Oxygen inhaler mask with sound pickup device Expired - Lifetime EP1161282B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9814854A FR2786107B1 (en) 1998-11-25 1998-11-25 OXYGEN INHALER MASK WITH SOUND TAKING DEVICE
FR9814854 1998-11-25
PCT/FR1999/002853 WO2000030716A1 (en) 1998-11-25 1999-11-19 Oxygen inhaler mask with sound pickup device

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EP1161282A1 true EP1161282A1 (en) 2001-12-12
EP1161282B1 EP1161282B1 (en) 2004-09-01

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EP (1) EP1161282B1 (en)
JP (1) JP2003512087A (en)
AU (1) AU756473B2 (en)
DE (1) DE69919907T2 (en)
FR (1) FR2786107B1 (en)
IL (1) IL143327A (en)
WO (1) WO2000030716A1 (en)

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FR2786107A1 (en) 2000-05-26
WO2000030716A1 (en) 2000-06-02
EP1161282B1 (en) 2004-09-01
IL143327A (en) 2004-05-12
FR2786107B1 (en) 2001-02-16
IL143327A0 (en) 2002-04-21
AU756473B2 (en) 2003-01-16
DE69919907D1 (en) 2004-10-07
AU1277700A (en) 2000-06-13
DE69919907T2 (en) 2005-09-22
US6997178B1 (en) 2006-02-14
JP2003512087A (en) 2003-04-02

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