EP2937113B1 - Control assembly for a respiratory mask - Google Patents

Control assembly for a respiratory mask Download PDF

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Publication number
EP2937113B1
EP2937113B1 EP15164784.9A EP15164784A EP2937113B1 EP 2937113 B1 EP2937113 B1 EP 2937113B1 EP 15164784 A EP15164784 A EP 15164784A EP 2937113 B1 EP2937113 B1 EP 2937113B1
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EP
European Patent Office
Prior art keywords
mode selection
selection knob
support
protruding portion
rotation
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.)
Not-in-force
Application number
EP15164784.9A
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German (de)
French (fr)
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EP2937113A1 (en
Inventor
Jean-Philippe Sibuet
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.)
Safran Aerosystems SAS
Original Assignee
Zodiac Aerotechnics SAS
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Publication date
Application filed by Zodiac Aerotechnics SAS filed Critical Zodiac Aerotechnics SAS
Publication of EP2937113A1 publication Critical patent/EP2937113A1/en
Application granted granted Critical
Publication of EP2937113B1 publication Critical patent/EP2937113B1/en
Not-in-force legal-status Critical Current
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/14—Respiratory apparatus for high-altitude aircraft
    • 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
    • A62B18/02—Masks

Definitions

  • the invention relates to a control assembly for a breathing mask of an aircraft crew member.
  • the different positions of the mode selection button correspond to different modes of operation of the regulator that should be adopted depending on the circumstances.
  • the user usually a pilot, co-pilot or flight engineer must manually select the operating mode appropriate to the circumstances.
  • the regulator When the mode selection button is in the first position, the regulator provides the user, via the respiratory cavity, with respiratory gas (generally almost pure oxygen) undiluted and overpressurized with respect to the ambient air in the cabin of the plane.
  • respiratory gas generally almost pure oxygen
  • This position is best adapted in critical situations. It is usually called “emergency” and allows in particular to avoid the user of the respirator to suffer the harmful effects of toxic fumes due for example to a fire in the cabin of the aircraft.
  • a known regulator is disclosed for example in the document FR 2 752 383 A .
  • control assemblies provide satisfaction and provide good security
  • the invention aims to further improve the security they provide.
  • the mode selection button comprises at least one projecting portion urging the user to place the mode selection button in the first position.
  • the user could detect the position in which is the mode selection button, especially because of a marking on the mode selection button. Therefore, in a first step the user determined the position in which was the mode selection button (for example by looking at the marking on the button or memory), in a second step the user was thinking to determine in which direction move the mode selection button and in a third step the user was moving. These three stages succeeding one another quickly, this procedure appeared satisfactory.
  • the user therefore places the mode selector button in the first position faster, which improves security and the user does not need to see to position the mode selection button. in the first position.
  • the mode selection button in the second position, when necessary.
  • a slight loss of time in such a situation does not have a significant impact on safety, especially in relation to the gain obtained during an emergency.
  • the mode selection button is rotatably mounted about an axis of rotation extending in one direction.
  • the projecting portion of the mode selection button is flush with the adjacent area of the support in the first position.
  • the user positioning his finger in the direction of the axis of rotation will detect the first position by the fact that his finger will be in contact with both the projecting portion of the mode selection button and the adjacent area of the support.
  • the projecting portion of the mode selection button is substantially in the extension of the adjacent zone of the support over a length of at least 1 centimeter, perpendicularly to the axis of rotation.
  • the first position will be particularly characteristic for the user.
  • the user is urged to place the mode selection button in the first position, both from the second position and from the third position, although it is necessary to turn in two opposite directions according to the mode selection button is in the second or third position.
  • the mode selection button comprises a third position, the second position being situated between the third position and the first position.
  • the user is naturally encouraged to move the mode selection button from the third position to the second and the second position to the first position, while preferably can easily locate the second position.
  • pinching the mode select button between thumb and forefinger by respectively pressing the first bearing surface and the second bearing surface moves the mode select button to the first position.
  • the user can thus very quickly and without error set the mode selection button in the first position.
  • the first bearing surface and the second bearing surface are each concave and preferably smooth.
  • the movement of the mode selection button to the first position will be facilitated. It will be understood by smooth that the fingers of the user can easily slide on the bearing surface, at least perpendicular to the axis of rotation.
  • the figures illustrate a breathing mask 100 disposed in a pressurized booth 8 of a commercial aircraft intended to transport crew members and generally also passengers.
  • a device pressurizes the cabin so that it is not lower than a pressurization pressure, generally corresponding to an altitude of between 1,500 meters and 2,400 meters.
  • a pressurization pressure generally corresponding to an altitude of between 1,500 meters and 2,400 meters.
  • the pressure in the cabin is substantially equal to the pressure outside the cabin and decreases until said pressurization pressure is reached.
  • the pressure in the cab is then kept constant until the outdoor outside pressure becomes less than the pressurization pressure.
  • the purpose of the respirator is to provide the user with sufficient oxygen and to be protected from harmful substances in the event of incidents such as depressurization, the presence of toxic gases or the like, preventing cabin occupants from breathing normally. .
  • the respiratory mask 100 comprises a regulation assembly 1 and an oronasal face cover 2.
  • the oronasal face cover is intended to be applied in a substantially watertight manner to the face of a user around his nose and mouth.
  • the oronasal face cover 2 has a breathing cavity 4 in which the user breathes.
  • the regulating assembly 1 comprises a support 10, a mode selection button 20 and a regulator.
  • the support 10 is in the form of a housing in which the regulator is arranged.
  • the support 10 has a gas supply orifice 6 A breathing apparatus for receiving the end of a hose for connecting the regulator to a source of respiratory gas substantially containing oxygen.
  • the regulator comprises three modes of operation.
  • the first operating mode called “emergency” mode
  • the regulator feeds the breathing cavity 4 only with respiratory gas until a slight overpressure is achieved in the breathing cavity 4 relative to the ambient pressure of the cabin air, this overpressure is generally between 3 mbar and 30 mbar.
  • this overpressure value is hardly felt by the user. Beyond 10 to 12mbar, overpressure requires a substantial additional effort to the user to breathe which is quickly felt by the user.
  • the regulator supplies the breathing cavity 4 only with respiratory gas until it reaches substantially the ambient pressure.
  • it is generally useful to provide for stopping the supply of the respiratory cavity before the breathing cavity reaches the ambient pressure, so that there is a very slight depression (a few tenths of a mbar to a few mbar) in the respiratory cavity 4
  • the third respiratory mode differs from the second respiratory mode in that the breathing cavity 4 is supplied with respiratory gas diluted with air, generally ambient air, the proportion of which is usually a function, in particular, of the pressure in the cabin 8.
  • the mode selection button 20 has a first position shown in FIGS. Figures 2A , 3A , 4A commander to the regulator to operate in the first mode.
  • the mode selection button 20 has a second position shown in FIGS. figures 1 , 2B , 3B , 4B commander to the regulator to operate in the second mode.
  • the mode selection button 20 has a third position shown in FIGS. Figures 2C , 3C , 4C commander to the regulator to operate in the third mode.
  • the mode selection button 20 is rotatably mounted about an axis of rotation Z.
  • the axis of rotation Z extends substantially vertically when the user holds his head vertically, so that the mode selection button 20 extends under the support 10.
  • the mode selection button 20 could be placed differently, especially on the in front of the support 10 and / or with an axis of rotation extending substantially horizontally.
  • the mode select button may translate instead of pivoting.
  • the three positions of the mode selection button are discrete positions materialized by notches.
  • the mode selection button 20 has a bottom and a peripheral edge. Entries EMGCY, 100% and N are carried both on the bottom and at two laterally opposite locations on the peripheral edge of the mode select button 20 in the illustrated embodiments. Three markers, a mark 11a on the bottom and two lateral markers 11b, 11c are optionally arranged on the support 10 to display the mode selection position 20 and therefore the operating mode of the selected regulator. In particular, the lateral marks 11b and 11c allow a person disposed next to the user to know the operating mode of the selected regulator. A cross check between pilot and co-pilot in particular is easy.
  • the mode selection button 20 has a first projecting portion 22 and a second projecting portion 24 diametrically opposite to the axis of rotation Z.
  • the first projecting portion 22 protrudes, radially from the axis of rotation Z, with respect to a first adjacent zone 12 of the support 10 which is offset relative to the first projecting portion 22 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.
  • the mode selection button 20 is moved to the first position EMGCY, the first projecting portion 22 approaching the first adjacent area 12, in a direction perpendicular to the Z axis of rotation
  • the first protruding portion 22 of the mode selection button is flush with the first adjacent zone 12 of the support 10.
  • at least a portion of the first projecting portion 22 is in the extension of the first adjacent zone 12 of the support 10, so that the user will be able to touch with the same finger simultaneously the first projecting portion 22 of the mode selection button 20 and the first adjacent zone 12 of the support 10, which will give him a tactile indication that he has selected the first mode of the regulator .
  • the first projecting portion 22 has a first bearing surface 23 extending substantially radially to the axis of rotation Z and the second projecting portion 24 has a second bearing surface 25 extending substantially radially to the axis of rotation. Z rotation.
  • the first bearing surface 23 and the second bearing surface 25 are intended to receive for one the thumb and the other preferably the index of the user.
  • a user pinching movement causes the application of forces F 23 , F 25 directed towards each other respectively on the first bearing surface 23 and the second bearing surface 25 of the selection button which tends to rotate it to the first position EMGCY, as illustrated by the arrows R.
  • This movement is advantageously favored by the concave shape of the first bearing surface 23 and the second bearing surface 25, perpendicularly (in other words in a plane perpendicular to) the direction of the axis of rotation Z.
  • this movement is advantageously favored by the fact that the fingers of the user can respectively slide on the first bearing surface 23 and the second bearing surface 25 as the fingers of the user approach.
  • the first bearing surface 24 and the second bearing surface 25 are smooth and / or have a low coefficient of friction. .
  • the second projecting portion 24 of the mode selection button 20 is flush with a second adjacent zone 14 of the support 10 which is substantially in the extension of the second projecting portion 24, in the direction of the axis of rotation Z .
  • the first projecting portion 22 and the second projecting portion 24 project relative to the first adjacent area 12 and the second adjacent area 14 respectively, radially to the axis of rotation Z.
  • the second position 100% being located between the third position N and the first position EMGCY, during the movement of the mode selection button 20 from the third position N towards the first position.
  • EMGCY position the first projecting portion 22, in particular the first bearing surface 23, is moved to the first adjacent area 12 and the second projecting portion 24, in particular the second bearing surface 25, is moved to the second area adjacent 14.
  • the second projecting portion 24, in particular the second bearing surface 25, flush with the second adjacent zone 14 the user will touch with the same finger simultaneously the second projecting portion 24 of the mode selection button 20 and the second adjacent zone 14 of the support 10, which will give it a tactile indication that he selected the second mode of the regulator. It can then continue the rotational movement of the mode selection button 20 to the first position EMGCY, as described above, or interrupt it according to its desire, from only tactile indications.
  • the second embodiment differs from the first embodiment in that in the first EMGCY position of the mode select button 20, the mode select button 20 has no projecting portion radially to the axis of rotation Z with respect to an adjacent zone of the support which would be in the immediate vicinity and offset in the direction of the axis of rotation Z.
  • the first EMGCY position of the mode selection button 20 is therefore particularly characteristic for the user.
  • the second projecting portion 24 protrudes, radially from the axis of rotation Z, with respect to a second adjacent zone 14 of the support 10 which is offset relative to the second projecting portion 24 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.
  • the mode selection button When the mode selection button is in the second position 100% and the user presses the first projecting portion 22 and / or the second projecting portion 24 to rotate the mode selection button 20, the second position 100% being an extreme position, the user can only rotate the mode selection knob 20 in one direction (clockwise on the Figure 4B ), to the first position EMGCY.
  • the mode selection knob 20 When the mode selection knob 20 is moved from the second position 100% to the first position EMGCY, the first projecting portion 22 is moved to the first adjacent area 12 and the second projecting portion 24 is moved to the second adjacent area 14.
  • the first projecting portion 22 is flush with the first adjacent zone 12 in the direction of the axis of rotation Z and the first projecting portion 22 is in the extension of the first adjacent zone 12 in the direction of the axis of rotation Z, on a length L of at least 1 cm, preferably at least 2 cm perpendicularly to the direction of the axis of rotation Z.
  • the second projecting portion 24 is flush with the second adjacent zone 14 in the direction of the axis of rotation. Z rotation and the second projecting portion 24 is in the extension of the second adjacent zone 14 in the direction of the axis of rotation Z.
  • a first secondary projecting portion 26 protrudes, radially from the axis of rotation Z, with respect to a first adjacent secondary area 16 of the support 10 which is offset from the first secondary projecting portion 26 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.
  • the mode selection button When the mode selection button is in the third position N and the user presses the first secondary projecting portion 26 and / or the second secondary projecting portion 28 to rotate the mode selection button 20, the third position N being an extreme position, the user can only rotate the mode selector knob 20 in one direction (counterclockwise on the figure 4C ), to the first position EMGCY.
  • the third position N is opposite to the second position 100%.
  • the first position EMGCY is located between the second position 100% and the third position N.
  • the first secondary projecting portion 26 is moved to the first secondary adjacent area 16 and the second secondary projecting portion 28 is moved to the second adjacent area secondary 18.
  • the first secondary projecting portion 26 is flush with the first secondary adjacent zone 16 in the direction of the axis of rotation Z and the first secondary projecting portion 26 is in the extension of the first secondary adjacent zone 16 in the direction of the axis of rotation.
  • rotation Z over a length L of at least 1 cm, preferably at least 2 cm perpendicular to the direction of the axis of rotation Z.
  • the second secondary projecting portion 28 is flush with the second secondary adjacent zone 18 according to the direction of the axis of rotation Z and the second secondary projecting portion 28 is in the extension of the second secondary adjacent zone 18 in the direction of the axis of rotation Z.
  • the mode selection button could in particular be mobile in translation.

Description

Domaine de l'inventionField of the invention

L'invention concerne un ensemble de régulation pour masque respiratoire d'un membre d'équipage d'avion.The invention relates to a control assembly for a breathing mask of an aircraft crew member.

Contexte de l'inventionContext of the invention

De manière connue, un tel ensemble de régulation de ce type comprend :

  • un boitier formant support,
  • un bouton de sélection de mode monté mobile sur le support entre au moins une première position et une deuxième position,
  • un régulateur destiné à être alimenté par une source de gaz respiratoire et adapté pour alimenter une cavité respiratoire en gaz respiratoire au moins dans les deux modes de fonctionnement suivants :
    • lorsque le bouton de sélection de mode est dans ladite première position, le régulateur alimente la cavité respiratoire tant que la pression dans la cavité respiratoire n'est pas supérieure à une première pression relative par rapport à la pression ambiante,
    • lorsque le bouton de sélection de mode est dans ladite deuxième position, le régulateur alimente la cavité respiratoire tant que la pression dans la cavité respiratoire n'est pas supérieure à une deuxième pression relative par rapport à la pression ambiante, la première pression étant supérieure à la deuxième pression.
In known manner, such a regulation assembly of this type comprises:
  • a case forming a support,
  • a mode selection button movably mounted on the support between at least a first position and a second position,
  • a regulator adapted to be powered by a source of breathing gas and adapted to supply a breathing air cavity with respiratory gas at least in the two following operating modes:
    • when the mode selection button is in said first position, the regulator supplies the respiratory cavity as long as the pressure in the respiratory cavity is not greater than a first pressure relative to the ambient pressure,
    • when the mode selection button is in said second position, the regulator supplies the respiratory cavity as long as the pressure in the respiratory cavity is not greater than a second pressure relative to the ambient pressure, the first pressure being greater than the second pressure.

Les différentes positions du bouton de sélection de mode correspondent à des modes de fonctionnement différents du régulateur qu'il convient d'adopter en fonction des circonstances. L'utilisateur, généralement un pilote, co-pilote ou mécanicien naviguant doit sélectionner manuellement le mode de fonctionnement adapté aux circonstances.The different positions of the mode selection button correspond to different modes of operation of the regulator that should be adopted depending on the circumstances. The user, usually a pilot, co-pilot or flight engineer must manually select the operating mode appropriate to the circumstances.

Lorsque le bouton de sélection de mode est dans la première position, le régulateur fournit à l'utilisateur, via la cavité respiratoire, du gaz respiratoire (généralement de l'oxygène quasiment pur) non dilué et en surpression par rapport à l'air ambiant dans la cabine de l'avion. Cette position est la mieux adaptée dans les situations critiques. Elle est usuellement dénommée "emergency" et permet notamment d'éviter à l'utilisateur du masque respiratoire de subir les effets nocifs de fumées toxiques dues par exemple à un feu dans la cabine de l'avion.When the mode selection button is in the first position, the regulator provides the user, via the respiratory cavity, with respiratory gas (generally almost pure oxygen) undiluted and overpressurized with respect to the ambient air in the cabin of the plane. This position is best adapted in critical situations. It is usually called "emergency" and allows in particular to avoid the user of the respirator to suffer the harmful effects of toxic fumes due for example to a fire in the cabin of the aircraft.

Il existe généralement d'autres modes de fonctionnement du régulateur pour réduire la fatigue de l'utilisateur engendrée par le fait que le gaz respiratoire lui soit fourni avec une surpression relativement importante par rapport à l'air ambiant et/ou pour réduire la consommation de gaz respiratoire.There are generally other modes of operation of the regulator to reduce the fatigue of the user caused by the fact that the respiratory gas is supplied to him with a relatively high overpressure compared to the ambient air and / or to reduce the consumption of breathing gas.

Un régulateur connu est divulgué par exemple dans le document FR 2 752 383 A .A known regulator is disclosed for example in the document FR 2 752 383 A .

Bien que les ensembles de régulation connus apportent satisfaction et procurent une bonne sécurité, l'invention vise à améliorer encore la sécurité qu'ils procurent.Although the known control assemblies provide satisfaction and provide good security, the invention aims to further improve the security they provide.

Exposé de l'inventionPresentation of the invention

Pour remédier aux problèmes précités, conformément à l'invention, le bouton de sélection de mode comporte au moins une portion saillante incitant l'utilisateur à placer le bouton de sélection de mode dans la première position.To remedy the aforementioned problems, according to the invention, the mode selection button comprises at least one projecting portion urging the user to place the mode selection button in the first position.

Il est apparu que dans l'art antérieur, l'utilisateur pouvait détecter la position dans laquelle est le bouton de sélection de mode, notamment du fait d'un marquage sur le bouton de sélection de mode. Par conséquent, dans une première étape l'utilisateur déterminait la position dans laquelle était le bouton de sélection de mode (par exemple en regardant le marquage sur le bouton ou de mémoire), dans une deuxième étape l'utilisateur réfléchissait pour déterminer dans quel sens déplacer le bouton de sélection de mode et dans une troisième étape l'utilisateur effectuait le déplacement. Ces trois étapes se succédant rapidement, cette procédure apparaissait satisfaisante.It appeared that in the prior art, the user could detect the position in which is the mode selection button, especially because of a marking on the mode selection button. Therefore, in a first step the user determined the position in which was the mode selection button (for example by looking at the marking on the button or memory), in a second step the user was thinking to determine in which direction move the mode selection button and in a third step the user was moving. These three stages succeeding one another quickly, this procedure appeared satisfactory.

Toutefois, il est apparu selon l'invention que, pour placer plus rapidement le bouton de sélection de mode dans la première position ou l'y laisser, l'utilisateur n'avait pas nécessairement besoin de connaître la position dans laquelle est le bouton de sélection de mode. Ainsi, il est apparu notamment qu'en munissant le bouton de sélection de mode d'une portion saillante incitant l'utilisateur à déplacer le bouton de sélection de mode vers la première position, de préférence sur la base d'incitations tactiles, par exemple du fait de la forme et/ou la position de la portion saillante, l'utilisateur n'avait pas besoin d'effectuer les deux étapes précités.However, it has appeared according to the invention that, in order to place the mode selection button more rapidly in the first position or to leave it there, the user did not necessarily need to know the position in which the button is located. Mode selection. Thus, it appeared in particular that by providing the mode selection button a protruding portion urging the user to move the mode selection button to the first position, preferably on the basis of tactile incentives, for example because of the shape and / or position of the protruding portion, the user did not need to perform the two aforementioned steps.

En cas d'urgence soudaine, l'utilisateur place par conséquent plus rapidement le bouton de sélection de mode dans la première position, ce qui améliore la sécurité et l'utilisateur n'a pas besoin de voir pour positionner le bouton de sélection de mode dans la première position. Bien entendu, il est possible qu'en contrepartie l'utilisateur mette un peu plus de temps à placer le bouton de sélection de mode dans la deuxième position, lorsque cela est nécessaire. Toutefois, une légère perte de temps dans une telle situation n'engendre pas de conséquence notable pour la sécurité, en particulier rapportée au gain procuré en situation d'urgence.In case of a sudden emergency, the user therefore places the mode selector button in the first position faster, which improves security and the user does not need to see to position the mode selection button. in the first position. Of course, it is possible that in return the user takes a little longer to place the mode selection button in the second position, when necessary. However, a slight loss of time in such a situation does not have a significant impact on safety, especially in relation to the gain obtained during an emergency.

Selon une autre caractéristique conforme à l'invention, de préférence, le bouton de sélection de mode est monté mobile en rotation autour d'un axe de rotation s'étendant suivant une direction.According to another feature according to the invention, preferably, the mode selection button is rotatably mounted about an axis of rotation extending in one direction.

De manière complémentaire, conformément à l'invention, l'ensemble de régulation présente de préférence, les caractéristiques suivantes :

  • le support présente une zone adjacente décalée par rapport à la portion saillante suivant la direction de l'axe de rotation et à proximité immédiate du bouton de sélection de mode,
  • dans la deuxième position du bouton de sélection de mode, la portion saillante du bouton de sélection de mode fait saillie par rapport à la zone adjacente du support, radialement à l'axe de rotation, et
  • lors du déplacement de la deuxième position vers la première position, la portion saillante du bouton de sélection de mode est déplacée vers ladite zone adjacente du support.
In a complementary manner, according to the invention, the regulation assembly preferably has the following characteristics:
  • the support has an adjacent zone offset from the protruding portion in the direction of the axis of rotation and in the immediate vicinity of the mode selection button,
  • in the second position of the mode selection button, the projecting portion of the mode selection button protrudes from the adjacent region of the support, radially to the axis of rotation, and
  • when moving from the second position to the first position, the projecting portion of the mode select button is moved to said adjacent area of the carrier.

Ainsi, l'utilisateur est naturellement incité à déplacer le bouton de sélection de mode vers la première position plutôt que vers la deuxième position.Thus, the user is naturally encouraged to move the mode selector button to the first position rather than the second position.

Selon une caractéristique complémentaire conforme à l'invention, de préférence la portion saillante du bouton de sélection de mode affleure la zone adjacente du support dans la première position.According to a complementary characteristic according to the invention, preferably the projecting portion of the mode selection button is flush with the adjacent area of the support in the first position.

Ainsi, l'utilisateur positionnant son doigt suivant la direction de l'axe de rotation détectera la première position par le fait que son doigt sera en contact à la fois avec la portion en saillie du bouton de sélection de mode et avec la zone adjacente du support.Thus, the user positioning his finger in the direction of the axis of rotation will detect the first position by the fact that his finger will be in contact with both the projecting portion of the mode selection button and the adjacent area of the support.

Selon une caractéristique encore complémentaire conforme à l'invention, de préférence, dans la première position, la portion saillante du bouton de sélection de mode est sensiblement dans le prolongement de la zone adjacente du support sur une longueur d'au moins 1 centimètre, perpendiculairement à l'axe de rotation.According to a still complementary characteristic according to the invention, preferably, in the first position, the projecting portion of the mode selection button is substantially in the extension of the adjacent zone of the support over a length of at least 1 centimeter, perpendicularly to the axis of rotation.

Ainsi, la première position sera particulièrement caractéristique pour l'utilisateur.Thus, the first position will be particularly characteristic for the user.

De manière complémentaire, conformément à l'invention, l'ensemble de régulation présente de préférence, les caractéristiques suivantes :

  • le bouton de sélection de mode comprend une troisième position, la première position étant située entre la deuxième position et la troisième position,
  • le bouton de sélection de mode comporte une portion saillante secondaire et le support présente une zone adjacente secondaire décalée par rapport à la portion saillante secondaire suivant la direction de l'axe de rotation et à proximité immédiate du bouton de sélection de mode,
  • dans la troisième position du bouton de sélection de mode, la portion saillante secondaire du bouton de sélection de mode fait saillie par rapport à la zone adjacente secondaire du support, radialement à l'axe de rotation,
  • lors du déplacement de la troisième position vers la première position, la portion saillante secondaire du bouton de sélection de mode est déplacée vers ladite zone adjacente secondaire du support, et
  • dans la première position du bouton de sélection de mode, de préférence la portion saillante secondaire du bouton de sélection de mode affleure la zone adjacente secondaire du support.
In a complementary manner, according to the invention, the regulation assembly preferably has the following characteristics:
  • the mode selection button comprises a third position, the first position being situated between the second position and the third position,
  • the mode selection button has a secondary projecting portion and the support has an adjacent secondary area offset from the secondary projecting portion in the direction of the axis of rotation and in the immediate vicinity of the mode selection button,
  • in the third position of the mode selection button, the secondary projecting portion of the mode selection button protrudes from the secondary adjacent area of the support, radially to the axis of rotation,
  • when moving from the third position to the first position, the secondary projecting portion of the mode select button is moved to said secondary adjacent area of the support, and
  • in the first position of the mode selection button, preferably the secondary projecting portion of the mode selection button is flush with the secondary adjacent area of the medium.

Ainsi, l'utilisateur est incité à placer le bouton de sélection de mode dans la première position, tant en partant de la deuxième position qu'en partant de la troisième position, bien qu'il faille tourner dans deux sens opposés selon que le bouton de sélection de mode est dans la deuxième position ou dans la troisième position.Thus, the user is urged to place the mode selection button in the first position, both from the second position and from the third position, although it is necessary to turn in two opposite directions according to the mode selection button is in the second or third position.

Selon une caractéristique alternative conforme à l'invention, de préférence le bouton de sélection de mode comprend une troisième position, la deuxième position étant située entre la troisième position et la première position.According to an alternative characteristic according to the invention, preferably the mode selection button comprises a third position, the second position being situated between the third position and the first position.

De manière complémentaire, conformément à l'invention, l'ensemble de régulation présente de préférence, les caractéristiques suivantes :

  • le bouton de sélection de mode comporte une portion saillante secondaire et le support présente une zone adjacente secondaire décalée par rapport à la portion saillante secondaire du bouton de sélection de mode suivant la direction de l'axe de rotation et à proximité immédiate du bouton de sélection de mode,
  • dans la troisième position du bouton de sélection de mode, la portion saillante secondaire du bouton de sélection de mode fait saillie par rapport à la zone adjacente secondaire du support, radialement à l'axe de rotation,
  • lors du déplacement de la troisième position vers la deuxième position, la portion saillante secondaire du bouton de sélection de mode est déplacée vers ladite zone adjacente secondaire du support, et
  • dans la deuxième position du bouton de sélection de mode, de préférence la portion saillante secondaire du bouton de sélection de mode affleure la zone adjacente secondaire du support.
In a complementary manner, according to the invention, the regulation assembly preferably has the following characteristics:
  • the mode selection button has a secondary projecting portion and the carrier has an adjacent secondary area offset from the secondary projecting portion of the mode selection button in the direction of the axis of rotation and in the immediate vicinity of the selection button fashion,
  • in the third position of the mode selection button, the secondary projecting portion of the mode selection button protrudes from the secondary adjacent area of the support, radially to the axis of rotation,
  • when moving from the third position to the second position, the secondary salient portion of the mode select button is moved to said secondary adjacent area of the carrier, and
  • in the second position of the mode selection button, preferably the secondary projecting portion of the mode selection button is flush with the secondary adjacent area of the support.

Ainsi, l'utilisateur est naturellement incité à déplacer le bouton de sélection de mode de la troisième position vers la deuxième et de la deuxième position vers la première position, tout en pouvant de préférence aisément repérer la deuxième position.Thus, the user is naturally encouraged to move the mode selection button from the third position to the second and the second position to the first position, while preferably can easily locate the second position.

En outre, conformément à l'invention, l'ensemble de régulation présente de préférence les caractéristiques suivantes :

  • le bouton de sélection de mode comprend un couple de portions saillantes comportant une première portion saillante et une deuxième portion saillante, diamétralement opposées par rapport à l'axe de rotation, et
  • la première portion saillante et la deuxième portion saillante du bouton de sélection de mode présentent respectivement une première surface d'appui et une deuxième surface d'appui, s'étendant chacune sensiblement radialement à l'axe de rotation et telles qu'une force exercée sur l'une ou l'autre des première surface d'appui et deuxième surface d'appui en direction de l'axe de rotation fait tourner le bouton de sélection de mode de la deuxième position vers la première position.
In addition, according to the invention, the regulation unit preferably has the following characteristics:
  • the mode selection button comprises a pair of projecting portions comprising a first projecting portion and a second projecting portion, diametrically opposite with respect to the axis of rotation, and
  • the first projecting portion and the second projecting portion of the mode selection button respectively have a first bearing surface and a second bearing surface, each extending substantially radially to the axis of rotation and such that a force exerted on one or the other of the first bearing surface and the second bearing surface in the direction of the axis of rotation rotates the mode selection knob from the second position to the first position.

Ainsi, le fait de pincer le bouton de sélection de mode entre le pouce et l'index en pressant respectivement sur la première surface d'appui et la deuxième surface d'appui déplace le bouton de sélection de mode vers la première position. L'utilisateur peut ainsi très rapidement et sans se tromper positionner le bouton de sélection de mode dans la première position.Thus, pinching the mode select button between thumb and forefinger by respectively pressing the first bearing surface and the second bearing surface moves the mode select button to the first position. The user can thus very quickly and without error set the mode selection button in the first position.

Selon une caractéristique complémentaire conforme à l'invention, de préférence la première surface d'appui et la deuxième surface d'appui sont chacune concave et de préférence lisse.According to a complementary feature according to the invention, preferably the first bearing surface and the second bearing surface are each concave and preferably smooth.

Ainsi, le déplacement du bouton de sélection de mode vers la première position sera facilité. On comprendra par lisse le fait que les doigts de l'utilisateur peuvent aisément glisser sur la surface d'appui, au moins perpendiculairement à l'axe de rotation.Thus, the movement of the mode selection button to the first position will be facilitated. It will be understood by smooth that the fingers of the user can easily slide on the bearing surface, at least perpendicular to the axis of rotation.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages de la présente invention apparaîtront dans la description détaillée suivante, se référant aux dessins annexés dans lesquels :

  • FIG. 1 illustre en perspective un ensemble de régulation conforme à l'invention,
  • FIG. 2A, FIG. 2B et FIG. 2C illustrent, selon la flèche repérée II à la figure 1, l'ensemble de régulation selon un premier mode de réalisation respectivement dans une première position, une deuxième position et une troisième position,
  • FIG. 3A, FIG. 3B et FIG. 3C illustrent, selon la flèche repérée III à la figure 1, l'ensemble de régulation selon un deuxième mode de réalisation respectivement dans la première position, la deuxième position et la troisième position,
  • FIG. 4A, FIG. 4B et FIG. 4C illustrent, selon la flèche repérée IV à la figure 1, l'ensemble de régulation selon un troisième mode de réalisation respectivement dans la première position, la deuxième position et la troisième position.
Other features and advantages of the present invention will become apparent from the following detailed description, with reference to the accompanying drawings in which:
  • FIG. 1 illustrates in perspective a regulation assembly according to the invention,
  • FIG. 2A , FIG. 2B and FIG. 2C illustrate, according to the arrow marked II at figure 1 , the regulating assembly according to a first embodiment respectively in a first position, a second position and a third position,
  • FIG. 3A , FIG. 3B and FIG. 3C illustrate, according to the arrow marked III at figure 1 , the regulation assembly according to a second embodiment respectively in the first position, the second position and the third position,
  • FIG. 4A , FIG. 4B and FIG. 4C illustrate, according to the arrow marked IV at figure 1 , the regulation assembly according to a third embodiment respectively in the first position, the second position and the third position.

Description détaillée de l'inventionDetailed description of the invention

Les figures illustrent un masque respiratoire 100 disposé dans une cabine 8 pressurisée d'un avion commercial destiné à transporter des membres d'équipage et généralement également des passagers.The figures illustrate a breathing mask 100 disposed in a pressurized booth 8 of a commercial aircraft intended to transport crew members and generally also passengers.

Un dispositif, de préférence de type dit isobare, pressurise la cabine pour qu'elle ne soit pas inférieure à une pression de pressurisation, correspondant généralement à une altitude comprise entre 1 500 mètres et 2 400 mètres. Lorsque l'avion s'élève, la pression dans la cabine est sensiblement égale à la pression à l'extérieure de la cabine et diminue, jusqu'à atteindre ladite pression de pressurisation. En conditions normales, la pression dans la cabine est alors maintenue constante jusqu'à ce que la pression extérieure à l'extérieure devienne inférieure à la pression de pressurisation. Le masque respiratoire vise à permettre à son utilisateur de disposer de suffisamment d'oxygène et d'être protégé de substances nocives en cas d'incidents, tels que dépressurisation, présence de gaz toxiques ou analogues, empêchant les occupants de la cabine de respirer normalement.A device, preferably of the so-called isobar type, pressurizes the cabin so that it is not lower than a pressurization pressure, generally corresponding to an altitude of between 1,500 meters and 2,400 meters. As the aircraft rises, the pressure in the cabin is substantially equal to the pressure outside the cabin and decreases until said pressurization pressure is reached. Under normal conditions, the pressure in the cab is then kept constant until the outdoor outside pressure becomes less than the pressurization pressure. The purpose of the respirator is to provide the user with sufficient oxygen and to be protected from harmful substances in the event of incidents such as depressurization, the presence of toxic gases or the like, preventing cabin occupants from breathing normally. .

Le masque respiratoire 100 comprend un ensemble de régulation 1 et un couvre face oronasal 2. Le couvre face oronasal est destiné à être appliqué de manière sensiblement étanche sur le visage d'un utilisateur autour de son nez et de sa bouche. Le couvre face oronasal 2 présente une cavité respiratoire 4 dans laquelle l'utilisateur respire.The respiratory mask 100 comprises a regulation assembly 1 and an oronasal face cover 2. The oronasal face cover is intended to be applied in a substantially watertight manner to the face of a user around his nose and mouth. The oronasal face cover 2 has a breathing cavity 4 in which the user breathes.

L'ensemble de régulation 1 comprend un support 10, un bouton de sélection de mode 20 et un régulateur. Dans les modes de réalisation illustrés, le support 10 se présente sous forme d'un boitier dans lequel est disposé le régulateur. Le support 10 présente un orifice 6 d'alimentation en gaz respiratoire destiné à recevoir l'extrémité d'un tuyau pour relier le régulateur à une source de gaz respiratoire contenant essentiellement de l'oxygène.The regulating assembly 1 comprises a support 10, a mode selection button 20 and a regulator. In the illustrated embodiments, the support 10 is in the form of a housing in which the regulator is arranged. The support 10 has a gas supply orifice 6 A breathing apparatus for receiving the end of a hose for connecting the regulator to a source of respiratory gas substantially containing oxygen.

Comme il est bien connu, le régulateur comprend trois modes de fonctionnement. Dans le premier mode de fonctionnement, dénommé mode "emergency", le régulateur alimente la cavité respiratoire 4 uniquement en gaz respiratoire jusqu'à atteindre une légère surpression dans la cavité respiratoire 4 par rapport à la pression ambiante de l'air de la cabine, généralement cette surpression est comprise entre 3 mbar et 30 mbar. Dans les valeurs de surpression les plus courantes, entre 3 à 7 mbar, cette valeur de surpression n'est guère ressentie par l'utilisateur. Au-delà de 10 à 12mbar, la surpression demande un effort supplémentaire substantiel à l'utilisateur pour respirer qui est rapidement ressenti par l'utilisateur.As is well known, the regulator comprises three modes of operation. In the first operating mode, called "emergency" mode, the regulator feeds the breathing cavity 4 only with respiratory gas until a slight overpressure is achieved in the breathing cavity 4 relative to the ambient pressure of the cabin air, this overpressure is generally between 3 mbar and 30 mbar. In the most common overpressure values, between 3 and 7 mbar, this overpressure value is hardly felt by the user. Beyond 10 to 12mbar, overpressure requires a substantial additional effort to the user to breathe which is quickly felt by the user.

Dans le deuxième mode de fonctionnement, dénommé mode "100%", le régulateur alimente la cavité respiratoire 4 uniquement en gaz respiratoire jusqu'à atteindre sensiblement la pression ambiante. En pratique, il est généralement utile de prévoir d'arrêter l'alimentation de la cavité respiratoire avant que la cavité respiratoire atteigne la pression ambiante, de sorte qu'il existe une très légère dépression (quelques dixièmes de mbar à quelques mbar) dans la cavité respiratoire 4In the second mode of operation, referred to as "100%" mode, the regulator supplies the breathing cavity 4 only with respiratory gas until it reaches substantially the ambient pressure. In practice, it is generally useful to provide for stopping the supply of the respiratory cavity before the breathing cavity reaches the ambient pressure, so that there is a very slight depression (a few tenths of a mbar to a few mbar) in the respiratory cavity 4

Le troisième mode respiratoire, dit "normal", se distingue du deuxième mode respiratoire en ce que la cavité respiratoire 4 est alimentée en gaz respiratoire dilué avec de l'air, généralement de l'air ambiant, dont la proportion est habituellement fonction notamment de la pression dans la cabine 8.The third respiratory mode, called "normal", differs from the second respiratory mode in that the breathing cavity 4 is supplied with respiratory gas diluted with air, generally ambient air, the proportion of which is usually a function, in particular, of the pressure in the cabin 8.

Le bouton de sélection de mode 20 présente une première position représentée aux figures 2A, 3A, 4A commandant au régulateur de fonctionner dans le premier mode. Le bouton de sélection de mode 20 présente une deuxième position représentée aux figures 1, 2B, 3B, 4B commandant au régulateur de fonctionner dans le deuxième mode. Le bouton de sélection de mode 20 présente une troisième position représentée aux figures 2C, 3C, 4C commandant au régulateur de fonctionner dans le troisième mode.The mode selection button 20 has a first position shown in FIGS. Figures 2A , 3A , 4A commander to the regulator to operate in the first mode. The mode selection button 20 has a second position shown in FIGS. figures 1 , 2B , 3B , 4B commander to the regulator to operate in the second mode. The mode selection button 20 has a third position shown in FIGS. Figures 2C , 3C , 4C commander to the regulator to operate in the third mode.

Le bouton de sélection de mode 20 est monté mobile en rotation autour d'un axe de rotation Z. Dans le mode de réalisation illustré, l'axe de rotation Z s'étend sensiblement verticalement lorsque l'utilisateur tient sa tête verticalement, de sorte que le bouton de sélection de mode 20 s'étend sous le support 10. Bien entendu, le bouton de sélection de mode 20 pourrait être placé différemment, notamment sur le devant du support 10 et/ou avec un axe de rotation s'étendant sensiblement horizontalement. En variante, le bouton de sélection de mode pourrait translater au lieu de pivoter. De manière connue, les trois positions du bouton de sélection de mode sont des positions discrètes matérialisées par des crans.The mode selection button 20 is rotatably mounted about an axis of rotation Z. In the illustrated embodiment, the axis of rotation Z extends substantially vertically when the user holds his head vertically, so that the mode selection button 20 extends under the support 10. Of course, the mode selection button 20 could be placed differently, especially on the in front of the support 10 and / or with an axis of rotation extending substantially horizontally. Alternatively, the mode select button may translate instead of pivoting. In known manner, the three positions of the mode selection button are discrete positions materialized by notches.

Le bouton de sélection de mode 20 présente un fond et un bord périphérique. Des inscriptions EMGCY, 100% et N sont portées à la fois sur le fond et en deux endroits latéralement opposés sur le bord périphérique du bouton de sélection de mode 20 dans les modes de réalisation illustrés. Trois repères, un repère 11a sur le fond et deux repères latéraux 11b, 11c sont optionnellement disposés sur le support 10 pour visualiser la position de sélection de mode 20 et donc le mode de fonctionnement du régulateur sélectionné. En particulier, les repères latéraux 11b et 11c permettent à une personne disposée à côté de l'utilisateur de connaître le mode de fonctionnement du régulateur sélectionné. Une vérification croisée entre pilote et co-pilote notamment est ainsi aisée.The mode selection button 20 has a bottom and a peripheral edge. Entries EMGCY, 100% and N are carried both on the bottom and at two laterally opposite locations on the peripheral edge of the mode select button 20 in the illustrated embodiments. Three markers, a mark 11a on the bottom and two lateral markers 11b, 11c are optionally arranged on the support 10 to display the mode selection position 20 and therefore the operating mode of the selected regulator. In particular, the lateral marks 11b and 11c allow a person disposed next to the user to know the operating mode of the selected regulator. A cross check between pilot and co-pilot in particular is easy.

Le bouton de sélection de mode 20 présente une première portion saillante 22 et une deuxième portion saillante 24 diamétralement opposées par rapport à l'axe de rotation Z.The mode selection button 20 has a first projecting portion 22 and a second projecting portion 24 diametrically opposite to the axis of rotation Z.

Tel qu'illustré aux figures 2B, 3B et 4B, dans la deuxième position 100% du bouton de sélection de mode 20, la première portion saillante 22 fait saillie, radialement à l'axe de rotation Z, par rapport à une première zone adjacente 12 du support 10 qui est décalée par rapport la première portion saillante 22 suivant la direction de l'axe de rotation Z et à proximité immédiate du bouton de sélection de mode 20.As illustrated in Figures 2B , 3B and 4B in the second position 100% of the mode selection button 20, the first projecting portion 22 protrudes, radially from the axis of rotation Z, with respect to a first adjacent zone 12 of the support 10 which is offset relative to the first projecting portion 22 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.

En appuyant sur la première portion saillante 22 de la manière expliquée infra, le bouton de sélection de mode 20 est déplacé vers la première position EMGCY, la première portion saillante 22 se rapprochant de la première zone adjacente 12, selon une direction perpendiculaire à l'axe de rotation Z.By pressing the first projecting portion 22 in the manner explained below, the mode selection button 20 is moved to the first position EMGCY, the first projecting portion 22 approaching the first adjacent area 12, in a direction perpendicular to the Z axis of rotation

Dans la première position EMGCY du bouton de sélection de mode 20, illustrée aux figures 2A, 2B et 2C, la première portion saillante 22 du bouton de sélection de mode affleure la première zone adjacente 12 du support 10. En particulier, une partie au moins de la première portion saillante 22 est dans le prolongement de première zone adjacente 12 du support 10, de sorte que l'utilisateur pourra toucher avec un même doigt simultanément la première portion saillante 22 du bouton de sélection de mode 20 et la première zone adjacente 12 du support 10, ce qui lui donnera une indication tactile qu'il a sélectionné le premier mode du régulateur.In the first EMGCY position of the mode select button 20, illustrated in FIGS. Figures 2A , 2B and 2C , the first protruding portion 22 of the mode selection button is flush with the first adjacent zone 12 of the support 10. In particular, at least a portion of the first projecting portion 22 is in the extension of the first adjacent zone 12 of the support 10, so that the user will be able to touch with the same finger simultaneously the first projecting portion 22 of the mode selection button 20 and the first adjacent zone 12 of the support 10, which will give him a tactile indication that he has selected the first mode of the regulator .

Dans le premier mode de réalisation, illustré aux figures 2A, 2B et 2C, et dans le deuxième mode de réalisation, illustré aux figures 3A, 3B et 3C, la première portion saillante 22 présente une première surface d'appui 23 s'étendant sensiblement radialement à l'axe de rotation Z et la deuxième portion saillante 24 présente une deuxième surface d'appui 25 s'étendant sensiblement radialement à l'axe de rotation Z. La première surface d'appui 23 et la deuxième surface d'appui 25 sont destinées à recevoir pour l'une le pouce et pour l'autre de préférence l'index de l'utilisateur.In the first embodiment, illustrated in Figures 2A , 2B and 2C , and in the second embodiment, illustrated in Figures 3A , 3B and 3C the first projecting portion 22 has a first bearing surface 23 extending substantially radially to the axis of rotation Z and the second projecting portion 24 has a second bearing surface 25 extending substantially radially to the axis of rotation. Z rotation. The first bearing surface 23 and the second bearing surface 25 are intended to receive for one the thumb and the other preferably the index of the user.

Tel qu'illustré aux figures 2B, 2C, 3B et 3C, un mouvement de pincement de l'utilisateur provoque l'application de forces F23, F25 dirigées l'une vers l'autre respectivement sur la première surface d'appui 23 et sur la deuxième surface d'appui 25 du bouton de sélection de mode qui tend à le faire tourner vers la première position EMGCY, tel qu'illustré par les flèches R.As illustrated in Figures 2B , 2C , 3B and 3C , a user pinching movement causes the application of forces F 23 , F 25 directed towards each other respectively on the first bearing surface 23 and the second bearing surface 25 of the selection button which tends to rotate it to the first position EMGCY, as illustrated by the arrows R.

Ce mouvement est avantageusement favorisé par la forme concave de la première surface d'appui 23 et de la deuxième surface d'appui 25, perpendiculairement (autrement dit dans un plan perpendiculaire) à la direction de l'axe de rotation Z. En outre, ce mouvement est avantageusement favorisé par le fait que les doigts de l'utilisateur peuvent glisser respectivement sur la première surface d'appui 23 et sur la deuxième surface d'appui 25 au fur à mesure du rapprochement des doigts de l'utilisateur. A cet effet, perpendiculairement (autrement dit dans un plan perpendiculaire) à la direction de l'axe de rotation Z, la première surface d'appui 24 et la deuxième surface d'appui 25 sont lisses et/ou présentent un faible coefficient de frottement. On pourrait toutefois prévoir des stries s'étendant radialement à la direction de l'axe de rotation Z ou tout autre moyen empêchant les doigts de glisser sur la première surface d'appui 24 et/ou la deuxième surface d'appui 25 suivant la direction de l'axe de rotation Z sans que cela ne nuise à la mise en oeuvre de la présente invention.This movement is advantageously favored by the concave shape of the first bearing surface 23 and the second bearing surface 25, perpendicularly (in other words in a plane perpendicular to) the direction of the axis of rotation Z. In addition, this movement is advantageously favored by the fact that the fingers of the user can respectively slide on the first bearing surface 23 and the second bearing surface 25 as the fingers of the user approach. For this purpose, perpendicularly (in other words in a plane perpendicular to the direction of the axis of rotation Z), the first bearing surface 24 and the second bearing surface 25 are smooth and / or have a low coefficient of friction. . We However, it would be possible to provide ridges extending radially to the direction of the axis of rotation Z or any other means preventing the fingers from sliding on the first bearing surface 24 and / or the second bearing surface 25 in the direction of rotation. the axis of rotation Z without jeopardizing the implementation of the present invention.

D'autre part et sans que cela soit nécessairement liée à ce qui vient d'être indiqué en liaison avec la forme de la première surface d'appui 23 et de la deuxième surface d'appui 25, dans la deuxième position 100% du bouton de sélection de mode 20, la deuxième portion saillante 24 du bouton de sélection de mode 20 affleure une deuxième zone adjacente 14 du support 10 qui est sensiblement dans le prolongement de la deuxième portion saillante 24, suivant la direction de l'axe de rotation Z.On the other hand and without necessarily being related to what has been indicated in connection with the shape of the first bearing surface 23 and the second bearing surface 25, in the second position 100% of the button mode selection 20, the second projecting portion 24 of the mode selection button 20 is flush with a second adjacent zone 14 of the support 10 which is substantially in the extension of the second projecting portion 24, in the direction of the axis of rotation Z .

Tel qu'illustré aux figures 2C et 3C, dans la troisième position N du bouton de sélection de mode 20, la première portion saillante 22 et la deuxième portion saillante 24 font saillie par rapport à la première zone adjacente 12 et la deuxième zone adjacente 14 respectivement, radialement à l'axe de rotation Z.As illustrated in Figures 2C and 3C in the third position N of the mode selection button 20, the first projecting portion 22 and the second projecting portion 24 project relative to the first adjacent area 12 and the second adjacent area 14 respectively, radially to the axis of rotation Z.

Lorsque l'utilisateur appuie sur la première portion saillante 22 et/ou la deuxième portion saillante 24, de préférence sur la première surface d'appui 23 et la deuxième surface d'appui 25 par pincement comme décrit précédemment, les forces F23, F25 appliquées sur le bouton de sélection de mode 20 font tourner le bouton de sélection de mode 20 vers la première position EMGCY, tel qu'illustré par les flèches R.When the user presses the first projecting portion 22 and / or the second projecting portion 24, preferably on the first bearing surface 23 and the second bearing surface 25 by pinching as described above, the forces F 23 , F 25 applied to the mode select button 20 rotates the mode select button 20 to the first position EMGCY, as illustrated by the arrows R.

Dans le deuxième mode de réalisation et dans le troisième mode de réalisation, la deuxième position 100% étant située entre la troisième position N et la première position EMGCY, lors du déplacement du bouton de sélection de mode 20 de la troisième position N vers la première position EMGCY, la première portion saillante 22, en particulier la première surface d'appui 23, est déplacée vers la première zone adjacente 12 et la deuxième portion saillante 24, en particulier la deuxième surface d'appui 25, est déplacée vers la deuxième zone adjacente 14.In the second embodiment and in the third embodiment, the second position 100% being located between the third position N and the first position EMGCY, during the movement of the mode selection button 20 from the third position N towards the first position. EMGCY position, the first projecting portion 22, in particular the first bearing surface 23, is moved to the first adjacent area 12 and the second projecting portion 24, in particular the second bearing surface 25, is moved to the second area adjacent 14.

Comme indiqué précédemment, dans la deuxième position 100% du bouton de sélection de mode 20, la deuxième portion saillante 24, en particulier la deuxième surface d'appui 25, affleurant la deuxième zone adjacente 14, l'utilisateur touchera avec un même doigt simultanément la deuxième portion saillante 24 du bouton de sélection de mode 20 et la deuxième zone adjacente 14 du support 10, ce qui lui donnera une indication tactile qu'il a sélectionné le deuxième mode du régulateur. Il pourra alors poursuivre le mouvement de rotation du bouton de sélection de mode 20 vers la première position EMGCY, comme décrit précédemment, ou l'interrompre en fonction de son souhait, à partir d'indications uniquement tactiles.As indicated previously, in the second position 100% of the mode selection button 20, the second projecting portion 24, in particular the second bearing surface 25, flush with the second adjacent zone 14, the user will touch with the same finger simultaneously the second projecting portion 24 of the mode selection button 20 and the second adjacent zone 14 of the support 10, which will give it a tactile indication that he selected the second mode of the regulator. It can then continue the rotational movement of the mode selection button 20 to the first position EMGCY, as described above, or interrupt it according to its desire, from only tactile indications.

Tel qu'illustré en particulier aux figures 2A et 3A, le deuxième mode de réalisation se distingue du premier mode de réalisation en ce que dans la première position EMGCY du bouton de sélection de mode 20, le bouton de sélection de mode 20 ne présente aucune partie en saillie, radialement à l'axe de rotation Z par rapport à une zone adjacente du support qui serait à proximité immédiate et décalée selon la direction de l'axe de rotation Z. La première position EMGCY du bouton de sélection de mode 20 est donc particulièrement caractéristique pour l'utilisateur.As illustrated in particular in Figures 2A and 3A the second embodiment differs from the first embodiment in that in the first EMGCY position of the mode select button 20, the mode select button 20 has no projecting portion radially to the axis of rotation Z with respect to an adjacent zone of the support which would be in the immediate vicinity and offset in the direction of the axis of rotation Z. The first EMGCY position of the mode selection button 20 is therefore particularly characteristic for the user.

Dans le troisième mode de réalisation, tel qu'illustré à la figure 4B, dans la deuxième position 100% du bouton de sélection de mode 20, la deuxième portion saillante 24 fait saillie, radialement à l'axe de rotation Z, par rapport à une deuxième zone adjacente 14 du support 10 qui est décalée par rapport la deuxième portion saillante 24 suivant la direction de l'axe de rotation Z et à proximité immédiate du bouton de sélection de mode 20.In the third embodiment, as illustrated in FIG. Figure 4B in the second position 100% of the mode selection button 20, the second projecting portion 24 protrudes, radially from the axis of rotation Z, with respect to a second adjacent zone 14 of the support 10 which is offset relative to the second projecting portion 24 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.

Lorsque le bouton de sélection de mode est dans la deuxième position 100% et que l'utilisateur appuie sur la première portion saillante 22 et/ou la deuxième portion saillante 24 pour faire tourner le bouton de sélection de mode 20, la deuxième position 100% étant une position extrême, l'utilisateur ne peut que faire tourner le bouton de sélection de mode 20 que dans un sens (sens horaire sur la figure 4B), vers la première position EMGCY.When the mode selection button is in the second position 100% and the user presses the first projecting portion 22 and / or the second projecting portion 24 to rotate the mode selection button 20, the second position 100% being an extreme position, the user can only rotate the mode selection knob 20 in one direction (clockwise on the Figure 4B ), to the first position EMGCY.

Lors du déplacement du bouton de sélection de mode 20 de la deuxième position 100% vers la première position EMGCY, la première portion saillante 22 est déplacée vers la première zone adjacente 12 et la deuxième portion saillante 24 est déplacée vers la deuxième zone adjacente 14.When the mode selection knob 20 is moved from the second position 100% to the first position EMGCY, the first projecting portion 22 is moved to the first adjacent area 12 and the second projecting portion 24 is moved to the second adjacent area 14.

Dans la première position EMGCY, tel qu'illustré à la figure 4A, la première portion saillante 22 affleure la première zone adjacente 12 suivant la direction de l'axe de rotation Z et la première portion saillante 22 est dans le prolongement de la première zone adjacente 12 suivant la direction de l'axe de rotation Z, sur une longueur L d'au moins 1 cm, de préférence au moins 2 cm perpendiculairement à la direction de l'axe de rotation Z. De même, la deuxième portion saillante 24 affleure la deuxième zone adjacente 14 suivant la direction de l'axe de rotation Z et la deuxième portion saillante 24 est dans le prolongement de la deuxième zone adjacente 14 suivant la direction de l'axe de rotation Z.In the first EMGCY position, as illustrated in Figure 4A , the first projecting portion 22 is flush with the first adjacent zone 12 in the direction of the axis of rotation Z and the first projecting portion 22 is in the extension of the first adjacent zone 12 in the direction of the axis of rotation Z, on a length L of at least 1 cm, preferably at least 2 cm perpendicularly to the direction of the axis of rotation Z. Similarly, the second projecting portion 24 is flush with the second adjacent zone 14 in the direction of the axis of rotation. Z rotation and the second projecting portion 24 is in the extension of the second adjacent zone 14 in the direction of the axis of rotation Z.

De manière analogue, tel qu'illustré à la figure 4C, selon le troisième mode de réalisation, dans la troisième position N du bouton de sélection de mode 20, une première portion saillante secondaire 26 fait saillie, radialement à l'axe de rotation Z, par rapport à une première zone adjacente secondaire 16 du support 10 qui est décalée par rapport la première portion saillante secondaire 26 suivant la direction de l'axe de rotation Z et à proximité immédiate du bouton de sélection de mode 20.Similarly, as illustrated in figure 4C according to the third embodiment, in the third position N of the mode selection button 20, a first secondary projecting portion 26 protrudes, radially from the axis of rotation Z, with respect to a first adjacent secondary area 16 of the support 10 which is offset from the first secondary projecting portion 26 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.

En outre, une deuxième portion saillante secondaire 28, sensiblement diamétralement opposée à la première portion saillante secondaire 26, fait saillie, radialement à l'axe de rotation Z, par rapport à une deuxième zone adjacente secondaire 18 du support 10 qui est décalée par rapport la deuxième portion saillante secondaire 28 suivant la direction de l'axe de rotation Z et à proximité immédiate du bouton de sélection de mode 20.In addition, a second secondary projecting portion 28, substantially diametrically opposed to the first secondary projecting portion 26, protrudes, radially from the axis of rotation Z, with respect to a second adjacent secondary zone 18 of the support 10 which is offset relative to the second secondary projecting portion 28 in the direction of the axis of rotation Z and in the immediate vicinity of the mode selection button 20.

Lorsque le bouton de sélection de mode est dans la troisième position N et que l'utilisateur appuie sur la première portion saillante secondaire 26 et/ou la deuxième portion saillante secondaire 28 pour faire tourner le bouton de sélection de mode 20, la troisième position N étant une position extrême, l'utilisateur ne peut que faire tourner le bouton de sélection de mode 20 que dans un sens (sens antihoraire sur la figure 4C), vers la première position EMGCY.When the mode selection button is in the third position N and the user presses the first secondary projecting portion 26 and / or the second secondary projecting portion 28 to rotate the mode selection button 20, the third position N being an extreme position, the user can only rotate the mode selector knob 20 in one direction (counterclockwise on the figure 4C ), to the first position EMGCY.

Dans le troisième mode de réalisation, la troisième position N est à opposé de la deuxième position 100%. La première position EMGCY est située entre la deuxième position 100% et la troisième position N.In the third embodiment, the third position N is opposite to the second position 100%. The first position EMGCY is located between the second position 100% and the third position N.

Lors du déplacement du bouton de sélection de mode 20 de la troisième position N vers la première position EMGCY, la première portion saillante secondaire 26 est déplacée vers la première zone adjacente secondaire 16 et la deuxième portion saillante secondaire 28 est déplacée vers la deuxième zone adjacente secondaire 18.During the movement of the mode selection button 20 from the third position N to the first position EMGCY, the first secondary projecting portion 26 is moved to the first secondary adjacent area 16 and the second secondary projecting portion 28 is moved to the second adjacent area secondary 18.

Dans la première position EMGCY, tel qu'illustré à la figure 4A, la première portion saillante secondaire 26 affleure la première zone adjacente secondaire 16 suivant la direction de l'axe de rotation Z et la première portion saillante secondaire 26 est dans le prolongement de la première zone adjacente secondaire 16 suivant la direction de l'axe de rotation Z, sur une longueur L d'au moins 1 cm, de préférence au moins 2 cm perpendiculairement à la direction de l'axe de rotation Z. De même, la deuxième portion saillante secondaire 28 affleure la deuxième zone adjacente secondaire 18 suivant la direction de l'axe de rotation Z et la deuxième portion saillante secondaire 28 est dans le prolongement de la deuxième zone adjacente secondaire 18 suivant la direction de l'axe de rotation Z.In the first EMGCY position, as illustrated in Figure 4A the first secondary projecting portion 26 is flush with the first secondary adjacent zone 16 in the direction of the axis of rotation Z and the first secondary projecting portion 26 is in the extension of the first secondary adjacent zone 16 in the direction of the axis of rotation. rotation Z, over a length L of at least 1 cm, preferably at least 2 cm perpendicular to the direction of the axis of rotation Z. Similarly, the second secondary projecting portion 28 is flush with the second secondary adjacent zone 18 according to the direction of the axis of rotation Z and the second secondary projecting portion 28 is in the extension of the second secondary adjacent zone 18 in the direction of the axis of rotation Z.

Bien entendu l'invention n'est nullement limitée au(x) mode(s) de réalisation décrit(s) à titre illustratif, non limitatif. Ainsi, sauf lorsque cela ressort manifestement de la description, il serait possible de modifier chacun des 3 modes de réalisation pour lui conférer tout ou partie des caractéristiques de l'un ou l'autre des autres modes de réalisation.Naturally, the invention is not limited to the embodiment (s) described for illustrative, non-limiting. Thus, except where it is apparent from the description, it would be possible to modify each of the 3 embodiments to give it all or part of the characteristics of one or other of the other embodiments.

En outre, au lien d'être mobile en rotation, le bouton de sélection de mode pourrait notamment être mobile en translation.In addition, in connection with being mobile in rotation, the mode selection button could in particular be mobile in translation.

Claims (10)

  1. Regulator assembly (1) for a breathing mask (100) of an aircraft crew member, comprising:
    - a casing forming a support (10),
    - a mode selection knob (20) mounted on the support (10) so as to be movable between at least a first position (EMGCY) and a second position (100%),
    - a regulator intended to be supplied by a source of breathing gas and adapted to supply breathing gas to a breathing cavity (4) in at least the following two operating modes:
    • when the mode selection knob (20) is in said first position (EMGCY), the regulator supplies gas to the breathing cavity (4) as long as the pressure in the breathing cavity is not greater than a first pressure relative to ambient pressure,
    • when the mode selection knob (20) is in said second position (100%), the regulator supplies gas to the breathing cavity (4) as long as the pressure in the breathing cavity is not greater than a second pressure relative to ambient pressure, the first pressure being greater than the second pressure,
    wherein in said regulator assembly (1), the mode selection knob (20) comprises at least one protruding portion (22) prompting the user to place the mode selection knob (20) in the first position (EMGCY).
  2. Regulator assembly according to claim 1, wherein the mode selection knob (20) is mounted to rotate about an axis of rotation (Z) extending in one direction.
  3. Regulator assembly according to the preceding claim, wherein:
    - the support (10) has an adjacent area (12) offset from the protruding portion (22) in the direction of the axis of rotation (Z) and in immediate proximity to the mode selection knob (20), and
    - in the second position (100%) of the mode selection knob (20), the protruding portion (12) of the mode selection knob (20) protrudes, relative to the adjacent area (22) of the support (10), radially to the axis of rotation (Z), and
    - when moving from the second position (100%) to the first position (EMGCY), the protruding portion (22) of the mode selection knob (20) is moved toward said adjacent area (12) of the support (10).
  4. Regulator assembly according to the preceding claim, wherein the protruding portion (22) of the mode selection knob (20) is flush with the adjacent area (12) of the support (10) in the first position (EMGCY).
  5. Regulator assembly according to the preceding claim, wherein, in the first position (EMGCY), the protruding portion (22) of the mode selection knob (20) lies substantially as an extension of the adjacent area (12) of the support (10) for a length (L) of at least 1 centimeter, perpendicular to the axis of rotation (Z).
  6. Regulator assembly according to any one of claims 3 to 5, wherein:
    - the mode selection knob (20) comprises a third position (N), the first position (EMGCY) being located between the second position (100%) and the third position (N),
    - the mode selection knob (20) comprises a second protruding portion (26; 28) and the support (10) has a second adjacent area (16; 18) offset from the second protruding portion (26; 28) in the direction of the axis of rotation (Z) and in immediate proximity to the mode selection knob (20),
    - in the third position (N) of the mode selection knob (20), the second protruding portion (26; 28) of the mode selection knob (20) protrudes relative to the second adjacent area (16; 18) of the support (10), radially to the axis of rotation (Z),
    - when moving from the third position (N) to the first position (EMGCY), the second protruding portion (26; 28) of the mode selection knob (20) is moved toward said second adjacent area (16; 18) of the support (10),
    - in the first position (EMGCY) of the mode selection knob (20), preferably the second protruding portion (26; 28) of the mode selection knob (20) is flush with the second adjacent area (16; 18) of the support (10).
  7. Regulator assembly according to any one of claims 2 to 5, wherein the mode selection knob (20) comprises a third position (N), the second position (100%) being located between the third position (N) and the first position (EMGCY).
  8. Regulator assembly according to the preceding claim, wherein:
    - the mode selection knob (20) comprises a second protruding portion (24) and the support (10) has a second adjacent area (14) offset from the second protruding portion (24) of the mode selection knob (20) in the direction of the axis of rotation (Z) and in immediate proximity to the mode selection knob (20),
    - in the third position (N) of the mode selection knob (20), the second protruding portion (24) of the mode selection knob (20) protrudes relative to the second adjacent area (14) of the support (10), radially to the axis of rotation (Z),
    - when moving from the third position (N) to the second position (100%), the second protruding portion (24) of the mode selection knob (20) is moved toward said second adjacent area (14) of the support (10), and
    - in the second position (100%) of the mode selection knob (20), preferably the second protruding portion (24) of the mode selection knob (20) is flush with the second adjacent area (14) of the support (10).
  9. Regulator assembly according to any one of claims 2 to 8, wherein:
    - the mode selection knob (20) comprises a pair of protruding portions (22; 24) including a first protruding portion (22) and a second protruding portion (24), diametrically opposed relative to the axis of rotation (Z), and
    - the first protruding portion (22) and the second protruding portion (24) of the mode selection knob (20) respectively have a first support surface (23) and a second support surface (25), each extending substantially radially to the axis of rotation (Z) and such that a force (F23, F25) exerted on one or the other of the first support surface (23) and second support surface (25) in the direction of the axis of rotation (Z) rotates the mode selection knob (20) from the second position (100%) to the first position (EMGCY).
  10. Regulator assembly according to the preceding claim, wherein the first support surface (23) and second support surface (25) are each concave and preferably smooth.
EP15164784.9A 2014-04-24 2015-04-23 Control assembly for a respiratory mask Not-in-force EP2937113B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1453718A FR3020274B1 (en) 2014-04-24 2014-04-24 REGULATING ASSEMBLY FOR RESPIRATORY MASK.

Publications (2)

Publication Number Publication Date
EP2937113A1 EP2937113A1 (en) 2015-10-28
EP2937113B1 true EP2937113B1 (en) 2016-06-15

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ID=51564754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15164784.9A Not-in-force EP2937113B1 (en) 2014-04-24 2015-04-23 Control assembly for a respiratory mask

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US (1) US10300312B2 (en)
EP (1) EP2937113B1 (en)
FR (1) FR3020274B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD753286S1 (en) * 2014-09-29 2016-04-05 TereoPneuma, Inc. Breath detection device
EP3834890A1 (en) * 2019-12-09 2021-06-16 Safran Aerotechnics Control assembly for a breathing mask for an aircraft crew member
EP3834891B1 (en) * 2019-12-09 2022-09-21 Safran Aerotechnics Control assembly for a breathing mask for an aircraft crew member
EP3943162B1 (en) * 2020-07-24 2023-10-25 Safran Aerotechnics Control assembly for a breathing mask for an aircraft crew member

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2378468A (en) * 1942-05-20 1945-06-19 Air Reduction Pressure regulator
US3526239A (en) * 1964-11-25 1970-09-01 Robertshaw Controls Co Oxygen diluter system
GB8724081D0 (en) * 1987-10-14 1987-11-18 Normalair Garrett Ltd Aircraft on-board oxygen generating systems
FR2752383B1 (en) * 1996-08-16 1998-11-06 Intertechnique Sa RESPIRATORY PROTECTION EQUIPMENT WITH INDICATION OF OPERATION
FR2778575B1 (en) 1998-05-12 2000-07-28 Intertechnique Sa RESPIRATORY PROTECTION EQUIPMENT WITH FAST SETUP
US8720437B2 (en) 2007-01-19 2014-05-13 Intertechnique Protective headgear equipment with respirator and optical shield
AU2010335987B2 (en) * 2009-12-24 2015-11-12 Sonomax Technologies Inc. In-ear device with selectable frequency response
CN103269753B (en) 2010-09-23 2015-08-19 佐迪埃克航空技术公司 Transmit the oxygen regulator of breathing gas in an aircraft
WO2012066394A2 (en) 2010-11-15 2012-05-24 Intertechnique A respiratory equipment for aircraft with an inflatable harness
EP2773432B1 (en) 2011-10-31 2017-03-01 Zodiac Aerotechnics Method for storing a respiratory mask and respiratory equipment including a respiratory mask and a storage element

Also Published As

Publication number Publication date
FR3020274A1 (en) 2015-10-30
FR3020274B1 (en) 2016-04-15
EP2937113A1 (en) 2015-10-28
US20150306431A1 (en) 2015-10-29
US10300312B2 (en) 2019-05-28

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