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    • 专利摘要:
    Aircraft breathing apparatus (1), comprising a regulator respirator (10), an inflatable harness (20) configured to be connected to a source of pressurized gas, and adapted to hold the respirator on the user (U) , a flexible hose (2) supplying gas connected to the breathing mask (10) for feeding the breathing mask) from a breathing gas supply, a storage space (30) comprising a housing (32) adapted to house the mask respiratory device (10) and the inflatable harness in a storage position, wherein the respiratory equipment comprises an interface element (4), connected to the inflatable harness, configured to cooperate with a pneumatic valve (V) acting selectively on the a breathable gas supply and configured to be detachably retained by at least one retention member (9), and the interface member (4) being movable between a test position (P1) in the the interface member (4) is biased by a force and the pneumatic valve causes an opening of the breathing gas supply to the hose, and a normal storage position (P2), in which the pneumatic valve prevents the circulation of the respiratory gas.
    公开号:FR3067612A1
    申请号:FR1755521
    申请日:2017-06-16
    公开日:2018-12-21
    发明作者:Jean-Philippe Sibuet；Olivier Potet
    申请人:Zodiac Aerotechnics SAS；
    IPC主号:
    专利说明:

    RESPIRATORY EQUIPMENT FOR AIRCRAFT, WITH INFLATABLE MASK AND HARNESS, AND ITS STORAGE SPACE.
    Field of the invention
    The invention relates to respiratory equipment for supplying respiratory gas to an aircraft crew member.
    The invention relates in particular to respiratory equipment intended to be used in particular by the pilot or the co-pilot in particular in the event of depressurization of the cockpit above a certain altitude above which the oxygen concentration in the outside air n is not enough for the human body. Respiratory equipment can be worn preventively at certain high altitudes or even in the presence of smoke.
    The invention further relates to a method characterizing the operation of the respiratory equipment in question and its installation on the face of the pilot or co-pilot.
    Context of the invention
    Aircraft flying above a certain altitude require either a cabin pressurization system as in the case of commercial aircraft, or a supply of breathable gas (including oxygen) to crew members as in the case of unpressurized military or utility aircraft.
    In both cases, specific respiratory equipment is provided, at least for the pilot and the co-pilot, to supply these persons and more generally any crew member in the cockpit with the aid of a respiratory mask.
    The respiratory mask can be worn in preventive mode in an airliner provided with pressurization but which flies at an altitude higher than 40,000 feet where the preventive port is recommended (or according to other conditional prescriptions), and finally the respiratory mask can be worn in event mode following an incident on the aircraft pressurization system, or in the presence of smoke (s) in the cockpit.
    In the case of wearing in event mode, in the event of an abrupt depressurization incident in the cabin and / or cockpit, the pilot or co-pilot must be able to install the respiratory mask and breathe breathable gas in less than five seconds, and it must be possible to use one hand for said complete installation maneuver, the other hand being used for other tasks, in particular tasks for piloting the flight controls of the aircraft.
    In other words, in the event of depressurization, the user of the emergency equipment, who is usually the pilot or co-pilot, must very quickly grab the breathing mask which is located in a storage space at his immediate range, and then place it around his head so that he can breathe through the breathing mask, thus providing him with breathing gas.
    The regulator breathing mask includes an oronasal face cover, suitable for applying to the crew member's face, around the mouth and nose and for delivering breathing gas, preferably on demand. The breathing mask also includes an inflatable harness. This inflatable harness keeps the oronasal face cover on the crew member's face. The respiratory mask may further include a protective screen (integrated or as a separate part) which makes it possible to protect the eyes of the user against possible projections, and also in particular from smoke.
    In addition, the procedures for verifying the proper functioning of aircraft equipment ('check-lists') prior to a take-off authorization include a procedure for verifying the availability and proper functioning of equipment intended to supply gas. breathing when needed in the cockpit. This procedure, often called "press to test", involves pressurizing the regulator mask and simultaneously and regulating the regulator.
    This verification test 'Press to test' usually uses at least one button that must be pressed (on which it is necessary to press for example) and a visual flow indicator allows to materialize the availability of an oxygen flow until Oronasal face cover during the test.
    Furthermore, in aircraft (planes or helicopters), the storage space formed by a box in which the respiratory mask is stored when not in use, is not very bulky and the inflatable harness must be folded over itself. even so that the mask and the harness can fit properly together in this space.
    When an emergency condition is detected, the user has less than 5 seconds to grab the mask in one hand and position it on his face. It is therefore mandatory that the harness is quickly and fully deployed when it is out of its storage space.
    In order to ensure proper deployment of the breathing mask harness, it is equally important that the breathing mask is stored properly in the storage space. This storage operation can be delicate and not very intuitive. If the storage conforms to the recommendations, then the deployment of the harness is not a problem, but if the storage is incorrect, the subsequent deployment of the harness may prove to be longer than expected.
    We cannot guarantee that storage is always in accordance with the recommendations because this storage operation is carried out manually and therefore highly dependent on the human factor and the level of training provided by the airlines and the maintenance documents made available to operators.
    It therefore appeared a need to improve the solutions which make it possible both to carry out the test of good oxygen functioning prior to the departure of the flight and which make it possible to ensure a deployment without hindrance of the harness when a crew member leaves in emergency breathing mask for storage space.
    Note that those skilled in the art commonly refer to the respiratory gas mentioned in this document as "oxygen".
    Statement of the invention
    To this end, the invention relates to respiratory equipment for aircraft, comprising:
    - a regulator breathing mask adapted to be applied, in a position of use, around a user's nose and mouth,
    - an inflatable harness configured to be connected to a source of pressurized gas (this pressure source is also most often used for regulated breathing but it can be otherwise), and adapted to maintain the respiratory mask on the user,
    - a flexible gas supply pipe connected to the respiratory mask at a downstream end to supply the respiratory mask from a supply of breathable gas,
    a storage space comprising a housing adapted to house / house at least the respiratory mask and the inflatable harness in a storage position and having an access opening, the respiratory mask being at a distance from the housing in the position of use, respiratory equipment comprising an interface element connected to the inflatable harness, the interface element being configured to cooperate with a pneumatic valve (V) acting selectively on the supply of breathable gas upstream of the flexible hose and the element interface being configured to be detachably retained by at least one retention element, and wherein the interface element is movable, while remaining retained by the retention element, between on the one hand a position of test in which the interface element is stressed by a force exerted directly by a finger of the user and the pneumatic valve open e the supply of breathable gas to the flexible hose, and on the other hand a normal storage position, obtained in the absence of force exerted by the user, in which the pneumatic valve prevents the circulation of respiratory gas.
    Thanks to these provisions, the cooperation between the interface element connected to the inflatable harness and the pneumatic valve arranged on the gas supply makes it possible to verify, via the oxygen availability test, during the procedure prior to authorization. take-off that the interface element is in the correct position in the retention element, which makes it possible to make a later stage of release from the respiratory mask and deployment of the harness reliable.
    By means of which, the only possibility for correctly carrying out a mandatory PTT oxygen test is to request the interface element and to positively observe a correct feedback, in particular via a visual indicator and an auditory feedback (oxygen flow and audio system), the interface element in the correct position will guarantee subsequent deployment of the harness under optimized conditions.
    In various embodiments of the assembly according to the invention, one can also have recourse to one and / or the other of the provisions which follow.
    According to one configuration, when the interface element (4) is removed from a retention position (PR) where the interface element is normally held by the retention element (9) in the storage position ( P2) or the test position (P1), then the pneumatic valve causes an opening of the passage from the source of pressurized gas to the inflatable harness and incidentally and / or causes an opening of the supply of breathable gas to the flexible hose .
    As a result, the supply of pressurized gas for inflation of the harness is only possible when the interface element is detached when the respiratory mask has already come out of the housing and the harness is unfolded, at least in part of the made of the retention provided by the interface element before its detachment. This avoids too early inflation of the harness making it difficult to deploy if it had previously been folded in the telescope or inside the seal of the oronasal mask.
    Depending on the pneumatic configuration, the supply of breathable gas to the mask can also be conditional upon detachment of the interface element and the supply of breathable gas to the mask only occurs when the respiratory mask is already out of the housing and the harness is unfolded, but before the user has actually applied the mask to the face.
    In other words, we differ the supply of gas in the flexible hose to delay the inflation of the harness even if the gripping ears of the regulator are already requested by the user.
    According to one configuration, the pressurized gas source of the inflatable harness is formed by the supply of breathable gas supplied by the flexible hose.
    There is therefore only one multifunctional pneumatic line for breathing and inflating the harness. Under these conditions, it is noted that the detachment of the interface element causes the supply of gas to the mask (opening of the valve), the supply of breathable gas to the mask regulator and, depending on the activation of the levers / ears gripping, inflation of the harness.
    According to one configuration, the pneumatic valve is part of a distributor connected to the gas supply tube and the interface element is configured to cooperate with a piston of said distributor.
    The use of such a pneumatic distributor makes it possible both to manage the oxygen press-to-test procedure and the delayed supply of breathable gas intended for the respiratory mask (for deferred inflation).
    According to another configuration, the pneumatic valve controls a separate auxiliary distributor. The auxiliary distributor can be located remotely and connected to the pneumatic valve by a hose, or the auxiliary distributor can be located near the pneumatic valve.
    According to one configuration, the interface element may include a zone of cooperation with the retention element, for example a clipping function, which ensures that the interface element is maintained as long as the tensile force remains below a certain threshold, and the interface element may comprise a form of cooperation with the piston of said distributor in order to keep the latter pushed against an elastic return element.
    Thus, the interface element can be formed by a relatively simple part, preferably monolithic.
    According to one configuration, the piston of the distributor is displaceable along a longitudinal axis between a first position called the test position corresponding to the test position of the interface element (interface element urged / pushed by manual action with the against elastic return), a second so-called closed circuit position corresponding to the normal position for storing the interface element (piston pushed back by the interface element, against elastic return), and a third so-called established circuit position corresponding to the removed position of the interface element (normal supply). Preferably, the second position is between the first position and the third position.
    Thanks to a series of O-rings arranged on the distributor piston, it is ensured that the first position and the third position allow the same open pneumatic circuit to be established, while the second position establishes a closed pneumatic circuit.
    According to one configuration, the distributor piston is movable along a longitudinal axis between a first position called the test position (interface element urged / pushed by manual action corresponding to the test position of the interface element (PTT position ), which also serves as an established circuit position corresponding to a position removed from the interface element (normal supply), and a second so-called closed circuit position, corresponding to the normal position for storing the interface element. (piston pushed back by the interface element, against an elastic return).
    With only two pneumatic positions, the identity between the test position and the established circuit position increases the coverage rate of the Press-To-Test oxygen test because the pneumatic system is in exactly the same configuration.
    According to one configuration, the piston is biased at least towards the second position, either by an elastic element, or by the pressure of the respiratory gas. Such a solution presents a simplicity of assembly and such a passive recall ensures high reliability.
    According to one configuration, the interface element, when in position in the retention element, is visible from the outside of the storage space. The pilot or co-pilot can thus visually check the presence of the interface element, which participates in the pre-flight test procedure.
    According to one configuration, the interface element, when it is in position in the retention element, is accessible by one or more fingers of the user. The pilot or co-pilot can thus request the interface element to carry out the pre-flight test procedure.
    According to one configuration, the respiratory equipment may further comprise at least one door movable between a closed position in which it at least partially closes the access opening and an open position in which it is away from the opening access, and the interface element, when in position in the retention element, is accessible to manual operation by the user from outside the storage area, when the door is in closed position. The oxygen test can be carried out in the normal storage position with the door (s) closed.
    According to one configuration, the mechanical connection between the retention element and the interface element is a ball joint effect. The traction required to remove the interface element from its grip in the retention element is homogeneous in an activation cone at least for a predefined solid angle.
    According to one configuration, the pneumatic distributor is located in the middle zone of one of the walls of the housing, preferably in the extension of the position of the interface element when the latter is in position in the retention element. This gives simplicity of assembly and ease of integration into the storage box.
    According to one configuration, the interface element is connected in a non-removable manner on the lower rear part of the harness, preferably by means of a flexible and short link. The interface element and the flexible link are embedded with the harness but are not substantially annoying for the user or the crew member using a respiratory mask.
    According to one configuration, the length of the flexible link is less than 10 cm, preferably less than 7 cm, and even more preferably less than 5 cm.
    The retention element can be attached to the housing. This gives simplicity and reliability of mechanical mounting.
    The pneumatic valve (V) can be arranged in the housing.
    In this configuration, it is noted that the pneumatic valve is not on the mask, nor is it outside the housing.
    Brief description of the figures
    Other characteristics and advantages of the present invention will appear in the following detailed description, referring to the appended drawings in which:
    - Figure 1 is an overall view of a storage space comprising the respiratory mask and the inflatable harness according to a first embodiment, w - Figure 1B shows an overall perspective view with the respiratory mask removed from the housing,
    - Figure 2 is an overview of the respiratory mask and the inflatable harness in the position of use on a crew member,
    - Figures 3A, 3B and 3C schematically illustrate a pneumatic valve, an interface element and a retention element according to the first embodiment
    FIG. 4 illustrates the respiratory equipment in its state stored in the storage space,
    FIG. 5 illustrates the respiratory equipment being deployed just before its use,
    FIGS. 6A, 6B and 6C schematically illustrate, in a similar manner in FIG. 3A-3C, a second embodiment,
    FIGS. 7A, 7B and 7C schematically illustrate, in a similar manner in FIG. 3A-3C, a third embodiment,
    - Figure 8 shows a timing diagram which illustrates the delay in inflation of the harness.
    Detailed description of the invention.
    In the various figures, the same references designate identical or similar elements. For reasons of clarity of the presentation, certain elements are not necessarily represented to scale.
    FIG. 1 illustrates an overall view of a storage space 30 containing a respiratory mask 10 and its inflatable harness 20, these elements together form respiratory equipment 1 for aircraft.
    In the example illustrated, the storage space 30 is a substantially rectangular box whose dimensions are constrained by a quasi-standard.
    The storage space 30 can have the following dimensions: the width L can be between 150 mm and 200 mm; the height H can be between 100 mm and 150 mm; the depth D can be between 200 mm and 280 mm. One particular example among others may be: width = 170mm, height = 122mm, depth = 220mm.
    In the example illustrated, there are two doors 34 closing the access to a housing 32 in which is stored the respiratory mask and its inflatable harness. A median plane PM separates the left and right parts of the housing.
    The doors protect the breathing mask in the stowed position, however it should be noted that the presence of the doors is not essential, in certain configurations, the storage space will be devoid of a door. It can be a mask receiving bowl called in the trade "cup".
    As illustrated in FIGS. 2, 4 and 5, the respiratory mask 10 comprises a regulator block 12 and an oro-nasal face cover 14 integral with the regulator block
    12.
    The respiratory mask 10 can also include a protective screen 15, integrated or as a separate attached piece. The protective screen 15 protects the user's eyes against the presence of smoke.
    The oronasal cover 14 may be of the type known by the term "fullface" with the integrated and inseparable protective screen.
    The regulator block 12 is equipped with pneumatic connection interfaces which will be detailed later.
    By "breathable gas" is meant a gas or mixture of gases comprising sufficient oxygen to avoid hypoxia of the user.
    A flexible pneumatic hose 2 connects the regulator block to a source of breathable gas 3 via equipment of the tap / valve / distributor type which will be detailed below. More specifically, a first end 2a of the flexible pipe is fixed to a pneumatic valve / valve / distributor arranged inside or near the storage space 30 and a second end 2b fluidly connected to the regulating block 12. The block- regulator puts the flexible hose 2 in connection (ie in fluid communication) with the regulator on demand itself.
    The inflatable harness 20 includes straps 22,24 intended to apply the mask and its face cover 14 against the face and are connected to the blocker 12. The regulator block 12 contains a regulator on demand, which delivers diluted oxygen or pure, according to a mode called "on demand" controlled for example by the depression generated by the breathing of the user U.
    The regulator unit can optionally include a microphone, for the audio communication function. It should be noted that in this case the flexible pipe 2 can be accompanied by electrical conductors contributing to the audio and radio communication function. There may be a selection or adjustment button 11 on the regulator block, as known per se.
    The harness 20 includes a tubular elastic device. The tubular elastic device forms at least one loop adapted to extend around the head of a user, according to its circumference. In the embodiment illustrated in Figures 2 and 5, the harness 20 forms two loops 22,24. The two loops 22,24 are held spaced apart by flexible spacers 26,28. The flexible elements 26, 28 extend transversely between the two loops 22, 24. In other words, the flexible elements 26, 28 extend generally vertically when the respiratory mask 10 is in the condition of use (FIG. 2).
    The principle of such an inflatable harness has been known for a long time, it is for example illustrated in the documents US3599636 or EP0288391.
    For example, each of the straps 22, 24 consists of an internal tube of elastic material contained in an inextensible sheath limiting the elongation of the tube. The length at rest of the internal tubes is such that they tend to apply the face cover 14 to the face with sufficient pressure to ensure the required seal, whatever the external pressure.
    However, the invention would also be applicable to a harness comprising one or more inextensible bands, and a deformation system to allow easy passage of the head.
    The regulator block 12 is provided with a connection end piece for the flexible pipe 2 for supplying pressurized respiratory gas, and one or two end pieces 22a, 24a for connecting the expandable tubes of the straps.
    In addition, the regulator block comprises means for manually controlling the inflation of the harness, constituted by an internal valve (not visible in the figures) arranged in the regulator block 12 designed to be actuated by manual pinching of two ears 18, one of which at least is tiltable, for example between the user's thumb and forefinger.
    When the two ears 18 are not pinched, the tap is at rest, it puts an interior volume of the regulating block into communication with the atmosphere, in order to allow the straps of the harness to retract, (and to tighten the head of the user if the harness is on the head).
    Conversely, when the tap is activated (i.e. when the user pinches the ears 18), the harness straps admit pressurized gas from the supply pipe 2 into the internal volume, the harness s 'expanses which allows to install it around the head or respectively to remove it.
    Advantageously according to the present invention, there is provided an interface element 4 connected to the inflatable harness 20.
    In the context of this document, the interface element 4 can also be called "clip".
    In the example illustrated, the mechanical connection between the inflatable harness and the interface element 4 is made by means of a flexible and short link 6. However, in other variants, the link could be semi rigid or even absent (direct link without flexible link).
    The length of the link 6 is less than 10 cm, preferably less than 7 cm, and even more preferably less than 5 cm.
    In a particular and advantageous configuration, the flexible link 6 is attached to the inflatable harness in the rear and lower part, namely in the middle region of the lower strap 22. The flexible link can be fixed to the lower tube either by a clamp 60 rigid , either by a closed sewn loop, or by any other non-detachable means.
    The interface element 4 can be in at least three different functional configurations. One of them has already been discussed, it is the situation where the inflatable harness is on the head of the user and therefore the interface element 4 is suspended from the free end of the flexible link 6 with no particular function at this location; however, it is expected that the presence of this interface element is not too troublesome for the occiput or the neck of the user.
    In two other configurations of interest, the interface element is trapped in a retention element 9 arranged in the storage space, in a retention position denoted PR.
    More precisely, as illustrated in FIG. 1, the interface element 4 is arranged on the facade, in the lower part between the two doors, in an area denoted ZM in the figures. Interface element 4 is available, with visual and tactile access, for a crew member to request it in order to carry out an oxygen availability test called "Press To test".
    This test consists of circulating oxygen (breathable gas) to the regulator block, materializing the noise produced by the flow of oxygen at the mask, upon request of a test button arranged on the regulator block
    There is a visual indicator of proper operation involved in the oxygen availability test, this visual indicator can be located on the front face of the storage space, if necessary on a door. According to an exemplary embodiment, a split diaphragm is used which opens under the effect of a gas passage and causes visual contrast.
    As will be seen below, the interface element 4 is used not only as an essential element in order to be able to carry out the oxygen availability test but also to contribute to the correct deployment of the inflatable harness when the mask and the harness have to be taken out of the body. 'storage room.
    In respiratory equipment, the interface element 4 is configured to cooperate with a pneumatic valve V acting selectively on the supply of breathable gas upstream of the flexible pipe 2.
    The interface element 4 is movable, while remaining retained by the retention element 9, between on the one hand a normal storage position (Fig 3A, P2), obtained in the absence of force exerted by the user, in which the pneumatic valve prevents the circulation of respiratory gas towards the flexible pipe 2 and on the other hand a test position (Fig 3B, P1) in which the interface element 4 is stressed by a force F exerted directly by the user's finger and the pneumatic valve V causes the breathing gas supply to the flexible hose to open.
    According to the first embodiment (Fig 3A-3C), the pneumatic valve (denoted generically V) is formed like a pneumatic distributor 7.
    The distributor 7 comprises a body 70, a piston 8 (core), orifices 71 72 73. One of the orifices 71 is connected to the breathing gas pipe 2 towards the mask. Another orifice 72 is connected to the source of supply of breathable gas; the third orifice 73 is connected to the open air (so as to purge the contents of the flexible pipe 2 before or during storage of the mask in the housing).
    The interface element 4 mechanically cooperates with the piston 8, which can be moved along the X axis.
    The position P1 of the interface element corresponds to the position 8P1 of the piston, the position P2 of the interface element corresponds to the position 8P2 of the piston, and the position P3 of the interface element corresponds to the position 8P3 of the piston.
    O-rings 75, arranged in grooves of the piston 8 and moved with the piston, are interposed without play between the body 70 of the distributor and the piston 8. These O-rings, with the passage generally left between the piston and the body, allow selectively define, as a function of the position of the piston 8, and via the orifices (71, 72, 73), a selective pneumatic circuit between the source of breathable gas 3 and the flexible hose 2 as illustrated by the arrowed paths in FIGS. 3A -3C, 6A-6C, 7A-7C.
    The piston 8 is recalled, against the action exerted by the interface element 4, by a spring 85, which can be a conventional spring as illustrated diagrammatically in the figures, or else an air spring using gas under pressure, such as breathing gas or other source.
    Note that the oxygen availability test cannot be carried out if the interface element 4 is not present in its retention position PR. Thus, the authorization to depart the flight can only be obtained if the interface element is in the correct position, which guarantees an optimized deployment of the inflatable harness in case of need.
    The interface element 4 is presented in the example illustrated as a molded plastic part which comprises a head 44, a trunk 47 and a wider gripping area 41 (we could call the gripping area 41 the "tail Of the interface element 4).
    The head comprises a front shape 48 configured to push the piston, the head comprises a rear part 49 whose shape allows retention in the retention element 9.
    A ramp 99 can be provided in the retention element 9 to adjust the exhaust force of the interface element 4.
    The gripping area 41 comprises in the illustrated example a through hole 42 which allows to pass an element for fixing the flexible link 6; according to one example, it is the flexible link which passes through the orifice and which is immobilized there by a stop element on each of the sides; other solutions are of course possible for fixing the flexible link 6 to the grip zone on the trunk of the interface element 4.
    The gripping area 41 may have a generally flat and wide area which is practical for being able to grasp the interface element between the thumb and the index finger of a user.
    Regarding the retention element, in the example illustrated, there are two retention elements 9A 9B arranged symmetrically on either side of the interface element when the latter is in its position of PR retention (see Figures 3A 3B).
    Each is pivotally mounted around an axis A8, A9 with the return spring (s) 95, 96 intended to create a threshold below which the interface element is retained and beyond which it can be detached, that is to say removed from the retention space PR.
    When the user U grasps the mask to wear it to his face, at the start of the movement, the interface element is still in the retention position, and the supply of gas under pressure in the flexible pipe is not yet established. Thus during the start of the maneuver, the inflatable harness remains in the deflated state (even if the ears 18 are actually pinched) which facilitates the extraction of the whole of the [mask + harness] from the housing. Furthermore, the flexible link 6 which connects the lower strap 22 to the interface element 4 trapped in the retention element 9 naturally generates a deployment of the harness when the user pulls the regulating block upward, because the part rear of the harness remains attached. Beyond a certain effort, the interface element detaches from the retention element, and it is only at this moment that the supply of pressurized gas is established in the flexible pipe towards the regulating block. This is how the inflation of the harness is differed when it is already deployed naturally by the retention of the clip. The delay caused is however not problematic with respect to the supply of oxygen in the oronasal face cover 14, because of the short length of the link 6, the clip detaches well before the face cover can reach the face of user U.
    It is noted that there could be a single retention element 9 as illustrated diagrammatically in FIGS. 4 and 5 and not two retention elements as in the cases illustrated in FIGS. 3A-3C, 6A-6C, 7A-7C.
    Generally, it is expected that the extraction force of the mask from the housing is preferably between 10 Newton and 50 N, or even between 20 and 40 N.
    The complementary forms of the interface element 4 and of the retention element 9 are defined to provide a release force for the interface element 4 and therefore authorizes the complete release of the mask from the housing preferably between 10 Newton and 50 N.
    With regard to the release force of the interface element 4 relative to the retention element 9, the interface forms between these two parts comprise on the one hand a ramp 99 in the element of retention 9 and on the other hand, in the interface element 4, the rear part 49 of the head which, by cooperation, ensure a clipping function thanks to the possible movement with elastic return of the retention element 9 (or of the elements of retention).
    Optionally, it can be provided that this retention / clipping function can have a patella function, at least over a predefined minimum solid angle. Thus, even if the traction is exerted strictly in the axis, the release effort will not be substantially modified by the offset.
    The shapes of the zones 49.99 can be designed to obtain a conical release zone with homogeneous force centered on the X axis with an opening for example greater than or equal to 30 ° (or even greater than a solid angle of the order of 0.5 steradian).
    In FIGS. 6A, 6B and 6C which illustrate a second embodiment, the retention elements are supported on a movable slide 13 which provides a stroke between the test position P1 and the normal position P2. The movable drawer 13 is mounted sliding along the X axis with an elastic return exerted by a wide spiral spring 63. The movable drawer 13 provides an available stroke between the normal storage position position P2 and the test position P1 which is obtained by exerting traction on the interface element 4 (this is a Pull to Test configuration), namely to the right in the figure, while the spring 63 pushes the drawer 13 to the left.
    Beyond in certain effort, the movable drawer 13 having arrived in abutment, then the interface element 4 escapes from the retention elements 9 (resp. 9A, 9B) and authorizes the inflation of the harness as far as the ears 18 are requested by user U.
    Note that the elements not described again here are considered to be identical or similar to those of the first embodiment.
    In FIGS. 7A, 7B and 7C which illustrate a third embodiment, the pneumatic valve V controlled by the different positions of the interface element 4 does not directly control the opening of the breathable gas towards the flexible pipe, the valve pneumatic simply serves as a sensor; in fact here a control pipe 27 connects the pneumatic valve V to an auxiliary distributor 7 ’which can be arranged at a certain distance; this auxiliary distributor 7 ’operates in a similar manner to that which has been presented for the distributor of the first mode above, namely it selectively controls the passage of breathable gas in the direction of the flexible hose.
    In this configuration, the interface element 4 is associated with a rocking lever 19 forming a cam control. The cam is denoted 17, this cam acts on a pneumatic selector comprising a piston 37 movable between two positions and O-rings 36 for sealing preferably arranged on the conical parts. An intermediate pneumatic line marked 27 connects the pneumatic valve V (here for selection) to a pneumatic chamber 91 for controlling an auxiliary distributor 7 ’which acts as the main distributor as described in the second embodiment with only two positions. In the auxiliary distributor 7 ’a control piston 29 delimits the pneumatic control chamber 91.
    In the example illustrated, the cam 17 pushes the piston 37 to the left while a return spring denoted 38 pushes the piston 37 to the right. The cam 17 and the lever 19 are integral and are movable in rotation about the axis denoted A7. The lever is returned clockwise by a return spring 92, against the action of the interface element 4, the head 44 of which is received in a convex portion of the lever.
    In position P2, the spring 38 pushes the piston to the right, the intermediate pipe 27 is emptied into the ATM atmosphere, the piston 8 of the main distributor is wedged to the right and the flexible pipe 2 is connected to the open air. Conversely in the two other positions P1 and P3, namely the test position and the supply position under use of the mask, the piston 37 of the selection valve is moved to the left, which causes the pressurization of the intermediate pipe 27 and the pressurization of the pneumatic chamber 91 and consequently the movement to the left of the piston 8 of the main distributor 7 '. This causes the supply of oxygen in the flexible pipe 2.
    Note that in this third embodiment, it is a "Push to Test" configuration as in the first mode. However, the distributor 7 ’can be arranged in any location and in particular elsewhere than in the extension of the interface element. Thus, the distributor 7 ’can be located in the housing 32 or outside.
    Similarly, it is noted that it would not be excluded to have the retention element arranged near the accommodation; in the examples illustrated, the retention element 9 is arranged in the housing 32 just like the valve V.
    Note that in the first two modes, the pneumatic distributor is located in the middle zone ZM of one of the walls of the housing (here that illustrated below), in the extension of the position of the interface element 4 when that -this is in position in the retention element; however, the interface element and the dispenser could be in another position inside the housing, for example on one side, in a corner, in particular if the housing does not have a door (s).
    It is noted that the main dispenser can be arranged in the storage box 30 or outside of it. Also, the visual indicator 5 of oxygen flow can be arranged on the storage box, or on one of its doors, or else relocated.
    The timing diagram of FIG. 8 illustrates the delay obtained in inflation of the harness; when the user grasps the mask and pinches the ears 18, the harness does not inflate because the gas circuit is not yet established; it is only during the deployment movement that the traction of the flexible link 6 causes the release of the interface element 4 and the supply of gas. Only then will the harness inflate (in good conditions, without tangling) and allow the passage of the head in the harness (i.e. the placement of the harness on the head). When the user releases the ears, the harness retracts on the head (see Fig 2).
    It will be noted that in the configurations presented, the entire pneumatic system for supplying breathable gas does not use any electrical element which could fail in the event of an incident on the electrical network of the aircraft. Advantageously, therefore, the availability of oxygen has no dependence on the electrical functions of the aircraft.
    It is important to note here that the examples have been given with a pressurized gas supply which serves both as an inflation vector for the inflatable harness and as breathable gas for the user of the mask.
    However, it could be otherwise; there could be on the one hand a breathable gas supply line and on the other hand a pressurized gas line, not necessarily breathable, for the inflation function of the inflatable harness. To this end, the main claim is understood to mean “source of gas under pressure” a gas allowing the inflation of the inflatable harness and on the other hand “supply of breathable gas” the supply of respiratory gas comprising oxygen intended for user's lungs
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    claims
    1. Respiratory equipment (1) for aircraft, comprising:
    - a regulating respiratory mask (10), adapted to be applied, in a position of use, around a user's nose and mouth (U),
    - an inflatable harness (20) configured to be connected to a source of pressurized gas, and adapted to hold the respiratory mask on the user (U),
    - a flexible gas supply pipe (2) connected to the respiratory mask (10) at a downstream end (2b) to supply the respiratory mask from a supply of breathable gas,
    - a storage space (30) comprising a housing (32) adapted to accommodate at least the respiratory mask (10) and the inflatable harness in a storage position and having an access opening, the respiratory mask (10) being distance from the housing in the position of use, in which the respiratory equipment comprises an interface element (4) connected to the inflatable harness, the interface element being configured to cooperate with a pneumatic valve (V) acting selectively on the supply of breathable gas upstream of the flexible hose and the interface element being configured to be detachably retained by at least one retention element (9), and in which the interface element (4) is movable, while remaining retained by the retention element (9), on the one hand between a test position (P1) in which the interface element (4) is stressed by a force exerted directly by a fingertip t of the user and the pneumatic valve causes an opening of the supply of breathable gas to the flexible hose, and on the other hand a normal storage position (P2), obtained in the absence of force exerted by the user, in which the pneumatic valve prevents the circulation of respiratory gas.
    [2" id="c-fr-0002]
    2. Breathing equipment according to claim 1, in which, when the interface element (4) is removed from a retention position (PR) where the interface element is normally held by the retention element ( 9) in the storage position (P2) or the test position (P1), then the pneumatic valve causes an opening of the passage from the source of pressurized gas to the inflatable harness and / or causes an opening of the supply of breathable gas to the flexible hose.
    [3" id="c-fr-0003]
    3. Breathing equipment according to one of claims 1 to 2, wherein the source of pressurized gas from the inflatable harness is formed by the supply of breathable gas supplied by the flexible hose.
    [4" id="c-fr-0004]
    4. Breathing equipment according to one of claims 1 to 3, wherein the pneumatic valve (V) is part of a distributor (7) connected to the gas supply tube (2) and the interface element ( 4) is configured to cooperate with a piston (8) of said distributor (7).
    [5" id="c-fr-0005]
    5. Breathing equipment according to claim 4, wherein the piston is movable along a longitudinal axis between a first position called the test position (8P1) corresponding to the test position (P1) of the interface element, a second position (8P2) called closed circuit corresponding to the normal storage position (P2) of the interface element, and a third position (8P3) called established circuit corresponding to a removed position (P3) of the element interface.
    [6" id="c-fr-0006]
    6. Breathing equipment according to claim 4, wherein the piston is movable along a longitudinal axis between a first position called test position (8P1,8P3) corresponding to the test position (P1) of the interface element, which also serves as an established circuit position corresponding to a removed position (P3) of the interface element, and a second position (8P2) called a closed circuit corresponding to the normal storage position (P2) of the element interface.
    [7" id="c-fr-0007]
    7. Breathing equipment according to one of claims 4 to 6, wherein the piston is biased at least towards the second position, either by an elastic element (85), or by the pressure of the breathing gas.
    5
    [8" id="c-fr-0008]
    8. Respiratory equipment according to one of claims 1 to 7, wherein the mechanical connection between the retention element (9) and the interface element (4) is a ball joint connection.
    [9" id="c-fr-0009]
    9. Breathing equipment according to one of claims 1 to 8, in which the
    [10" id="c-fr-0010]
    10 pneumatic valve is located in the middle zone (ZM) of one of the walls of the housing, preferably in the extension of the position of the interface element (4) when it is in position in the element of retention.
    [11" id="c-fr-0011]
    10. Respiratory equipment according to one of claims 1 to 9, the interface element 4 being connected in a non-removable manner on the lower rear part of the harness, preferably by means of a flexible and short link (6). .
    类似技术:
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    FR3067612B1|2019-07-26|RESPIRATORY EQUIPMENT FOR AIRCRAFT WITH INFLATABLE MASK AND HARNESS AND ITS STORAGE SPACE.
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    EP3834890A1|2021-06-16|Control assembly for a breathing mask for an aircraft crew member
    EP0202147B1|1989-05-31|Ventilation and breath protection system for vehicles used in contaminated areas
    FR3018454A1|2015-09-18|RESPIRATORY
    BE513945A|
    同族专利:
    公开号 | 公开日
    US20180361179A1|2018-12-20|
    FR3067612B1|2019-07-26|
    EP3417913A1|2018-12-26|
    CA3008228A1|2018-12-16|
    CN109125974A|2019-01-04|
    BR102018012200A2|2019-06-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB897531A|1958-11-06|1962-05-30|Kidde Walter Co Ltd|Improvements in or relating to breathing masks|
    US20020189617A1|2001-06-11|2002-12-19|Cordero Enrique A.|Crew oxygen mask stowage assembly including selective depressurization valve|
    EP1275415A1|2001-07-11|2003-01-15|Intertechnique|Respiratory apparatus and its use in an installation to protect against hypoxy|
    US3073301A|1958-07-16|1963-01-15|Air Reduction|Aviation quick release valve|
    US3599636A|1969-12-12|1971-08-17|Intertechnique Sa|Inflatable head harness for respirator devices|
    US4909247A|1988-05-06|1990-03-20|Figgie International, Inc.|Aircraft emergency breathing assembly|
    FR2653091A1|1989-10-18|1991-04-19|Graviner Ltd Kidde|Oxygen supply device|
    GB8923471D0|1989-10-18|1989-12-06|Graviner Ltd Kidde|Oxygen supply system|
    US5154374A|1991-08-23|1992-10-13|Burns Aerospace Corporation|Aircraft passenger seat assembly including an emergency oxygen system|
    BR0306735A|2002-01-07|2005-05-10|Scott Tech Inc|Valve Pipe Assembly|
    FR2840534B1|2002-06-10|2005-04-01|Intertechnique Sa|HEAD PROTECTION EQUIPMENT WITH RESPIRATORY MASK AND OPTICAL SCREEN|
    EP2049204B1|2006-08-10|2010-03-17|Intertechnique|Breathing mask with an autonomous inflatable harness|
    WO2008087468A1|2007-01-19|2008-07-24|Intertechnique|Protective headgear equipment with respirator and optical shield|
    EP2286877B1|2009-08-21|2019-01-16|Zodiac Aerotechnics|Circuit for supplying a respiratory gas to an aircraft passenger from a pressurized source comprising a pressure regulating unit|
    CN103260708B|2010-11-15|2016-08-17|佐迪埃克航空技术公司|There is the airborne vehicle breath device of inflatable bandage|
    BR112014010329B1|2011-10-31|2020-02-18|Zodiac Aerotechnics|Method for storing a respiratory mask and respiratory equipment|
    WO2016113584A1|2015-01-15|2016-07-21|Zodiac Aerotechnics|A stowage device of emergency equipment for aircraft crewmember|
    FR3067612B1|2017-06-16|2019-07-26|Zodiac Aerotechnics|RESPIRATORY EQUIPMENT FOR AIRCRAFT WITH INFLATABLE MASK AND HARNESS AND ITS STORAGE SPACE.|
    EP3431145B1|2017-07-20|2019-11-20|Zodiac Aerotechnics|Respiratory assembly for aircraft|GB2499808B|2012-02-29|2016-05-11|Joseph Anthony Griffiths|Airflow control valve|
    FR3067612B1|2017-06-16|2019-07-26|Zodiac Aerotechnics|RESPIRATORY EQUIPMENT FOR AIRCRAFT WITH INFLATABLE MASK AND HARNESS AND ITS STORAGE SPACE.|
    CN109847223B|2019-01-23|2021-07-23|徐州赛孚瑞科高分子材料有限公司|Mining full-pneumatic portable air purification system|
    CN113939344A|2019-02-18|2022-01-14|赛峰航空技术公司|Breathing apparatus for an aircraft, breathing assembly and method for storing a breathing apparatus|
    法律状态:
    2018-12-21| PLSC| Search report ready|Effective date: 20181221 |
    2019-05-27| PLFP| Fee payment|Year of fee payment: 3 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1755521A|FR3067612B1|2017-06-16|2017-06-16|RESPIRATORY EQUIPMENT FOR AIRCRAFT WITH INFLATABLE MASK AND HARNESS AND ITS STORAGE SPACE.|
    FR1755521|2017-06-16|FR1755521A| FR3067612B1|2017-06-16|2017-06-16|RESPIRATORY EQUIPMENT FOR AIRCRAFT WITH INFLATABLE MASK AND HARNESS AND ITS STORAGE SPACE.|
    CA3008228A| CA3008228A1|2017-06-16|2018-06-13|Respiratory equipment for aircraft, with inflatable mask and harness, and its storage space|
    EP18177524.8A| EP3417913A1|2017-06-16|2018-06-13|Breathing equipment for aircraft with mask and inflatable harness and storage space for same|
    US16/009,082| US20180361179A1|2017-06-16|2018-06-14|Respiratory equipment for aircraft, with inflatable mask and harness, and its storage space|
    CN201810620907.6A| CN109125974A|2017-06-16|2018-06-15|The breathing apparatus and its memory space of aircraft with inflatable mask and harness|
    BR102018012200-2A| BR102018012200A2|2017-06-16|2018-06-15|RESPIRATORY EQUIPMENT FOR AIRCRAFT, WITH INFLATABLE MASK AND HARNESS, AND ITS STORAGE SPACE|
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