EP0236240B1 - Breathing mask fixing system for protective helmet - Google Patents

Breathing mask fixing system for protective helmet Download PDF

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Publication number
EP0236240B1
EP0236240B1 EP87420022A EP87420022A EP0236240B1 EP 0236240 B1 EP0236240 B1 EP 0236240B1 EP 87420022 A EP87420022 A EP 87420022A EP 87420022 A EP87420022 A EP 87420022A EP 0236240 B1 EP0236240 B1 EP 0236240B1
Authority
EP
European Patent Office
Prior art keywords
arm
breathing mask
fixing
spring
elements
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.)
Expired - Lifetime
Application number
EP87420022A
Other languages
German (de)
French (fr)
Other versions
EP0236240A1 (en
Inventor
Adrien Galet
Hans-Joachim Walther
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to AT87420022T priority Critical patent/ATE52038T1/en
Publication of EP0236240A1 publication Critical patent/EP0236240A1/en
Application granted granted Critical
Publication of EP0236240B1 publication Critical patent/EP0236240B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/28—Ventilating arrangements
    • A42B3/288—Ventilating arrangements with means for attaching respirators or breathing masks
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/084—Means for fastening gas-masks to heads or helmets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/096—Sliding
    • Y10T292/1014—Operating means
    • Y10T292/1022—Rigid
    • Y10T292/1024—Friction catch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/45—Rod clamps
    • Y10T292/47—Friction-plate catch

Definitions

  • the present invention relates to a device for attaching a respiratory mask to a protective helmet.
  • This device making it possible to adapt, when desired, a removable breathing mask to a protective helmet, belongs to the type of those composed of two lateral mooring arms, each consisting of two elements mounted to slide one relative to the 'other and associated with an internal spring tending to make them penetrate one into the other, one of the elements of each mooring arm being articulated by its anterior end on one side of the respiratory mask, while the other element of said arm is provided, at its rear end, with a hook intended to cooperate with a hooking notch located on one side of the cap of the helmet.
  • the telescopic structure of the mooring arms, and their internal spring, ensure the application of the respiratory mask on the face of the user, with a good seal around the periphery of the mask, without making any preliminary adjustment of arm length.
  • the invention provides simple means which make it possible to modify the tension of each mooring arm and which, in particular, allow a readjustment of this tension during use, without the need to remove the mask.
  • the interior spring of each mooring arm is a helical spring compressed between a bearing face belonging to one of the elements of the arm and a stop belonging to a movable member in the longitudinal direction of the arm, a retaining means being provided on this arm for locking the movable member in any position corresponding to a desired compression of the spring, or for releasing said movable member, thereby allowing adjustment or readjustment of the compression of the spring.
  • the aforementioned movable member is a movable rod, around which the helical spring is wound, the movable rod being provided with a flange for supporting the anterior end of the spring , and this movable rod extending in front of the flange so as to protrude outside the arm.
  • the rear end of the helical spring is supported on a folded tab, provided at the end of an element of each mooring arm, this folded tab having a hole through which the movable rod passes.
  • the retaining means is produced in the form of a pivoting cleat carried by one of the elements of each mooring arm, this cleat having an external part for its operation, and an inner part cooperating with the movable rod to block it in any desired position.
  • the pivoting cleat of angled shape, crosses with a certain clearance a slot made in one of the elements of each mooring arm, the interior part of this cleat being pierced with a hole traversed by the movable rod.
  • the two elements of each mooring arm are both made from cut and folded metal plates.
  • the two elements can in particular be folded so as to each have a "U" section with inclined wings, giving the entire arm a section of trapezoidal shape, the profiles of the two elements fitting into one another to provide sliding guidance.
  • a very strong complete arm structure is thus obtained by simple and inexpensive means, ensuring good protection of the mechanism located at the interior, and requiring a minimum number of parts.
  • the hook of each mooring arm can be simply formed by a folded portion of the rear end of one of the elements of this arm.
  • the anterior end of the other element also comprises a folded part, on which a clevis is articulated asymmetrically, itself articulated on one side of the respiratory mask; thus, a simple reversal of the yoke makes it possible to mount the same mooring arm either on the right side or on the left side of the respiratory mask, which further contributes to the simplicity, the economy and the convenience of use. of the device.
  • the structure of the mooring arms allows them to be disassembled and reassembled quickly, without tools, thus making maintenance very easy.
  • FIG. 1 and also in FIGS. 5 and 6, there is shown a protective helmet, for example intended for firefighters, which comprises a rigid outer cap 1, inside which is a non-visible deformable cap, allowing the adaptation of the helmet on your head of the user.
  • This protective helmet is designed to be able to be used at the same time as a respiratory mask 2, covering the entire face of the user and comprising a goggle 3.
  • the cap 1 of the helmet externally comprises, on its sides, two notches the attachment 4, one of which is visible in the drawing, the other being symmetrical with the first.
  • the respiratory mask 2 is provided with two lateral mooring arms 5, also arranged symmetrically.
  • each of the mooring arms 5 is more particularly shown in FIGS. 2 to 4.
  • the arm 5 is formed mainly of two elements 6 and 7 of "U" section with inclined wings, one of which 6 is slidably mounted inside the other 7, which gives the arm 5 a telescopic structure, with a section. trapezoidal.
  • the two elements 6 and 7 of the arm 5 can each be made in one piece, from a sheet metal plate suitably cut and then folded.
  • the external element 7 of the arm 5 comprises, at its front end, a folded tab 8 on which is articulated, around a substantially horizontal axis 9, a small yoke 10.
  • This yoke 10 is itself articulated, along an axis 11 perpendicular to the previous one, on one side of the breathing mask 2, near the hoop 12 of the telescope 3. It should be noted that the pivoting mounting of the yoke 10 on the folded tab 8 allows, by turning this yoke 10, to use the same mooring arm 5 on either the right side and the left side, despite the asymmetry of this yoke 10 with respect to its hinge axis 9.
  • the inner element 6 of the arm 5 comprises, at its rear end, a folded part 13 which forms a hook, intended to cooperate with one of the hooking notches 4 of the cap 1 of the helmet.
  • the hook 13 is itself provided with those opposite notches 14 increasing the security of the attachment, avoiding any separation of the notches 4 even in the event of oblique traction or impact.
  • An elastic connection between the two elements 6 and 7 of each mooring arm 5 is produced by means of a helical spring 15 working in compression, which is housed inside the arm 5, and wound around a movable rod 16.
  • the rear end of the spring 15 is supported on a lug 17 bent at a right angle, provided at the rear end of the external element 7 of the arm 5, the lug 17 comprising a central hole 18 through which the rod 16 passes.
  • the front end of the spring 15 is supported on a flange 19 of the rod 16. This rod 16 extends, in front of the flange 19, so as to protrude outside the arm 5.
  • a slot 20, formed towards the front of the internal element 6 of the arm 5, is crossed with a certain play by an elbow metal cleat 21, which has an external branch 22 forming an operating lever, and an internal branch 23 pierced a hole 24 through which the rod 16 passes, this second branch being capable of ensuring the blocking of the rod 16 in any position.
  • FIG. 3 shows the arm 5 in the retracted state, when it is not hung on the cap of the helmet.
  • the inner element 6 of the arm 5 is pulled out of the outer element 7, until the arm 5 takes a sufficient length to allow the commitment of the hook 13 on the corresponding notch 4 of the cap 1 of the helmet.
  • the spring 15 is then compressed more, and this spring 15, tending to cause the inner element 6 to enter the outer element 7, ensures the application of the respiratory mask 2 on the face of use.
  • the user By pushing back the anterior end of the rod 16, along arrow 27, the user causes the cleat 21 to come off and causes the rod 16 to move back with its flange 19, which compresses the spring 15 even more strongly.
  • the device described above also makes it possible to prestress the spring 15 as soon as the respiratory mask 2 is put in place. This device also makes it possible, conversely, to reduce the compression of the spring 15, without leaving the mask 2, the branch 23 of the cleat 21 ensuring "self-locking" of the movable rod 16 in any desired position.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

A device ensuring the adaptation of a removable respiratory mask onto a protection helmet includes two attachment arms, each one of the arms having first and second elements slidingly engaging one another. The first element is pivotally connected to one side of the mask whereas the second element is provided with a hook coacting with a catch located on the headpiece of the helmet. An interior spring is compressed between a support surface of the first element and a flange of a movable rod. The second element has a latching lever for latching the rod in any desired position to adjust or readjust the compression of the spring, and accordingly, the application force of the mask onto the face.

Description

La présent invention concerne un dispositif pour la fixation d'un masque respiratoire sur un casque de protection.The present invention relates to a device for attaching a respiratory mask to a protective helmet.

Ce dispositif, permettant d'adapter lorsqu'un le désire un masque respiratoire amovible sur un casque de protection, appartient au genre de ceux composés de deux bras latéraux d'amarrage, constitués chacun de deux éléments montés coulissants l'un par rapport à l'autre et associés à un ressort intérieur tendant à les faire pénétrer l'un dans l'autre, l'un des éléments de chaque bras d'amarrage étant articulé par son extrémité antérieure sur un côté du masque respiratoire, tandis que l'autre élément dudit bras est pourvu, à son extrémité postérieure, d'un crochet prévu pour coopérer avec un cran d'accrochage situé sur un côté de la calotte du casque.This device, making it possible to adapt, when desired, a removable breathing mask to a protective helmet, belongs to the type of those composed of two lateral mooring arms, each consisting of two elements mounted to slide one relative to the 'other and associated with an internal spring tending to make them penetrate one into the other, one of the elements of each mooring arm being articulated by its anterior end on one side of the respiratory mask, while the other element of said arm is provided, at its rear end, with a hook intended to cooperate with a hooking notch located on one side of the cap of the helmet.

Ce genre de dispositif, assurant une liaison non permanente entre un masque respiratoire et un casque, se trouve déjà décrit dans la demande de brevet français N° 2 532 552 et la demande de brevet européen N° 0 105 813. Le dispositif en question permet à l'utilisateur du casque de mettre en place le masque respiratoire sur son visage, sans avoir à retirer le casque, lequel peut conserver une structure très simple puisqu'il suffit de prévoir sur la calotte de ce casque deux crans d'accrochage latéraux, résultant de pièces rapportées sur la calotte ou formés d'un seul tenant avec la calotte. Un tel ensemble intéresse notamment les sapeurs-pompiers, les militaires et les préposés au maintien de l'ordre, pour certaines interventions.This type of device, ensuring a non-permanent connection between a respiratory mask and a helmet, is already described in French patent application No. 2,532,552 and European patent application No. 0 105 813. The device in question allows the user of the helmet to put on the breathing mask on his face, without having to remove the helmet, which can retain a very simple structure since it suffices to provide two lateral hooking notches on the shell of this helmet, resulting from parts attached to the cap or formed integrally with the cap. Such a set is of particular interest to firefighters, the military and law enforcement officials, for certain interventions.

La structure télescopique des bras d'amarrage, et leur ressort intérieur, assurent l'application du masque respiratoire sur le visage de l'utilisateur, avec une bonne étanchéité sur le pourtour du masque, sans effectuer aucun réglage préliminaire de longueur des bras.The telescopic structure of the mooring arms, and their internal spring, ensure the application of the respiratory mask on the face of the user, with a good seal around the periphery of the mask, without making any preliminary adjustment of arm length.

Toutefois, lors de l'utilisation du casque avec le masque respiratoire, la transpiration du visage peut entraîner un glissement du masque, qu'il est souhaitable de compenser par une mise en tension plus forte des bras d'amarrage. Plus généra- ' lement, il existe le besoin de pouvoir régler initialement, et surtout de pouvoir-réajuster ultérieurement, la force d'application du masque respiratoire sur le visage de l'utilisateur.However, when using the helmet with the respiratory mask, perspiration on the face can cause the mask to slip, which it is desirable to compensate for by putting the mooring arms under greater tension. More generally, there is the need to be able to adjust initially, and especially to be able to readjust later, the force of application of the respiratory mask on the face of the user.

L'invention fournit des moyens simples qui permettent de modifier la tension de chaque bras d'amarrage et qui, notamment, autorisent un réajustement de cette tension en cours d'utilisation, sans qu'il soit nécessaire de retirer le masque.The invention provides simple means which make it possible to modify the tension of each mooring arm and which, in particular, allow a readjustment of this tension during use, without the need to remove the mask.

A cet effet, dans le dispositif pour la fixation d'un masque respiratoire sur un casque de protection, appartenant au genre précisé plus haut, le ressort intérieur de chaque bras d'amarrage est un ressort hélicoïdal comprimé entre une face d'appui appartenant à l'un des éléments du bras et une butée appartenant à un organe mobile suivant la direction longitudinale du bras, un moyen de retenue étant prévu sur ce bras pour bloquer l'organe mobile dans toute position correspondant à une compression désirée du ressort, ou pour libérer ledit organe mobile, permettant ainsi un ajustement ou un réajustement de la compression du ressort. Il devient ainsi notamment possible à l'utilisateur de modifier la force d'application du masque respiratoire sur son visage, après un certain temps de port de ce masque, selon les exigences momentanées de tenue, d'étanchéité et de confort. Les mêmes moyens permettent aussi de précontraindre initialement le ressort pour obtenir une force d'application optimale du masque sur le visage, adaptée à la morphologie particulière de chaque utilisateur.To this end, in the device for attaching a respiratory mask to a protective helmet, belonging to the kind specified above, the interior spring of each mooring arm is a helical spring compressed between a bearing face belonging to one of the elements of the arm and a stop belonging to a movable member in the longitudinal direction of the arm, a retaining means being provided on this arm for locking the movable member in any position corresponding to a desired compression of the spring, or for releasing said movable member, thereby allowing adjustment or readjustment of the compression of the spring. It thus becomes in particular possible for the user to modify the force of application of the respiratory mask on his face, after a certain time of wearing this mask, according to the momentary requirements of holding, sealing and comfort. The same means also make it possible to initially prestress the spring in order to obtain an optimal force for applying the mask to the face, adapted to the particular morphology of each user.

Selon une forme de réalisation préférée de l'invention, l'organe mobile précité est une tige mobile, autour de laquelle est enroulé le ressort hélicoïdal, la tige mobile étant pourvue d'une collerette pour l'appui de l'extrémité antérieure du ressort, et cette tige mobile se prolongeant en avant de la collerette de manière à dépasser à l'extérieur du bras. L'extrémité postérieure du ressort hélicoïdal est appuyée sur une patte pliée, prévue à l'extrémité d'un élément de chaque bras d'amarrage, cette patte pliée comportant un trou traversé par la tige mobile.According to a preferred embodiment of the invention, the aforementioned movable member is a movable rod, around which the helical spring is wound, the movable rod being provided with a flange for supporting the anterior end of the spring , and this movable rod extending in front of the flange so as to protrude outside the arm. The rear end of the helical spring is supported on a folded tab, provided at the end of an element of each mooring arm, this folded tab having a hole through which the movable rod passes.

L'ajustement et le réajustment de la compression du ressort sont ainsi réalisables en poussant la tige mobile par son extrémité antérieure, après déblocage, des trous judicieusement placés permettant le coulissement de cette tige sur une course suffisante.The adjustment and readjustment of the compression of the spring are thus achievable by pushing the movable rod by its anterior end, after release, judiciously placed holes allowing the sliding of this rod over a sufficient stroke.

Selon un mode de réalisation particulier de l'invention, le moyen de retenue est réalisé sous la forme d'un taquet pivotant porté par l'un des éléments de chaque bras d'amarrage, ce taquet possédant une partie extérieure pour sa manoeuvre, et une partie intérieure coopérant avec la tige mobile pour assurer le blocage de celle-ci en toute position désirée. Le taquet pivotant, de forme coudée, traverse avec un certain jeu une fente ménagée dans l'un des éléments de chaque bras d'amarrage, la partie intérieure de ce taquet étant percée d'un trou traversé par la tige mobile. Grâce à un tel taquet, on obtient un "auto-blocage" de la tige mobile dans toute position désirée, cet effet pouvant être renforcé en prévoyant, à l'intérieur de chaque bras d'amarrage, un autre ressort agissant sur le taquet, pour rappeler ce dernier en position de blocage de la tige mobile.According to a particular embodiment of the invention, the retaining means is produced in the form of a pivoting cleat carried by one of the elements of each mooring arm, this cleat having an external part for its operation, and an inner part cooperating with the movable rod to block it in any desired position. The pivoting cleat, of angled shape, crosses with a certain clearance a slot made in one of the elements of each mooring arm, the interior part of this cleat being pierced with a hole traversed by the movable rod. Thanks to such a cleat, a "self-locking" of the movable rod is obtained in any desired position, this effect being able to be reinforced by providing, inside each mooring arm, another spring acting on the cleat, to recall the latter in the locking position of the movable rod.

Selon une autre caractéristique de l'invention, les deux éléments de chaque bras d'amarrage sont réalisés l'un et l'autre à partir de plaques métalliques découpées et pliées. Les deux éléments peuvent être notamment pliés de manière à présenter chacun une section en "U" avec ailes inclinées, conférant à l'ensemble du bras une section de forme trapézoïdale, les profils des deux éléments s'emboîtant l'un dans l'autre pour assurer le guidage en coulissement. On obtient ainsi, par des moyens simples et peu coûteux, une structure de bras complète très résistante, assurant une bonne protection du mécanisme situé à l'intérieur, et nécessitant un nombre minimum de pièces. Ainsi, le crochet de chaque bras d'amarrage peut être simplement formé par une partie repliée de l'extrémité postérieure de l'un des éléments de ce bras. Avantageusement, l'extrémité antérieure de l'autre élément comporte aussi une partie repliée, sur laquelle est articulée de façon dissymétrique une chape, elle-même articulée sur un côté du masque respiratoire; ainsi, un simple retournement de la chape permet de monter le même bras d'amarrage indifféremment sur le côté droit ou sur le côté gauche du masque respiratoire, ce qui contribue encore à la simplicité, à l'économie et à la commodité d'utilisation du dispositif. Enfin, la structure des bras d'amarrage autorise leur démontage et leur remontage rapide, sans outil, rendant ainsi l'entretien très aisé.According to another characteristic of the invention, the two elements of each mooring arm are both made from cut and folded metal plates. The two elements can in particular be folded so as to each have a "U" section with inclined wings, giving the entire arm a section of trapezoidal shape, the profiles of the two elements fitting into one another to provide sliding guidance. A very strong complete arm structure is thus obtained by simple and inexpensive means, ensuring good protection of the mechanism located at the interior, and requiring a minimum number of parts. Thus, the hook of each mooring arm can be simply formed by a folded portion of the rear end of one of the elements of this arm. Advantageously, the anterior end of the other element also comprises a folded part, on which a clevis is articulated asymmetrically, itself articulated on one side of the respiratory mask; thus, a simple reversal of the yoke makes it possible to mount the same mooring arm either on the right side or on the left side of the respiratory mask, which further contributes to the simplicity, the economy and the convenience of use. of the device. Finally, the structure of the mooring arms allows them to be disassembled and reassembled quickly, without tools, thus making maintenance very easy.

De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif pour la fixation d'un masque respiratoire sur un casque de protection:

  • Figure 1 est une vue de côté montrant le casque de protection et le masque respiratoire associé, en position d'utilisation simultanée;
  • Figure 2 est une vue en perspective de l'un des bras d'amarrage du masque respiratoire;
  • Figure 3 est une vue en coupe longitudinale de ce bras d'amarrage, à l'état rétracté, suivant III-III de figure 2;
  • Figure 4 en est une vue en coupe transversale, suivant IV-IV de figure 3;
  • Figure 5 est une vue en coupe longitudinale du bras d'amarrage, à plus petite échelle et en position d'utilisation, le casque et le masque étant indiqués partiellement et très schématiquement;
  • Figure 6 est une vue similaire à figure 5, montrant le même bras après réajustement de sa tension.
In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this device for fixing a respiratory mask on a protective helmet:
  • Figure 1 is a side view showing the protective helmet and the associated respiratory mask, in the position of simultaneous use;
  • Figure 2 is a perspective view of one of the mooring arms of the respiratory mask;
  • Figure 3 is a longitudinal sectional view of this mooring arm, in the retracted state, along III-III of Figure 2;
  • Figure 4 is a cross-sectional view along IV-IV of Figure 3;
  • Figure 5 is a longitudinal sectional view of the mooring arm, on a smaller scale and in the position of use, the helmet and the mask being indicated partially and very schematically;
  • Figure 6 is a view similar to Figure 5, showing the same arm after readjusting its tension.

Sur la figure 1, et aussi aux figures 5 et 6, est représenté un casque de protection par exemple destiné aux sapeurs-pompiers, qui comprend une calotte extérieure rigide 1, à l'intérieur de laquelle est disposée une coiffe déformable non visible, permettant l'adaptation du casque sur ta tête de l'utilisateur. Ce casque de protection est prévu pour pouvoir être utilisé en même temps qu'un masque respiratoire 2, recouvrant l'ensemble du visage de l'utilisateur et comportant une lunette 3. Pour l'adaptation du masque respiratoire 2, la calotte 1 du casque comporte extérieurement, sur ses côtés, deux crans l'accrochage 4 dont l'un est visible au dessin, l'autre étant symétrique du premier. Pour pouvoir être accroché sur ces crans 4, le masque respiratoire 2 est muni de deux bras latéraux d'amarrage 5, également disposés symétriquement.In FIG. 1, and also in FIGS. 5 and 6, there is shown a protective helmet, for example intended for firefighters, which comprises a rigid outer cap 1, inside which is a non-visible deformable cap, allowing the adaptation of the helmet on your head of the user. This protective helmet is designed to be able to be used at the same time as a respiratory mask 2, covering the entire face of the user and comprising a goggle 3. For the adaptation of the respiratory mask 2, the cap 1 of the helmet externally comprises, on its sides, two notches the attachment 4, one of which is visible in the drawing, the other being symmetrical with the first. To be able to be hung on these notches 4, the respiratory mask 2 is provided with two lateral mooring arms 5, also arranged symmetrically.

La structure de chacun des bras d'amarrage 5 est plus particulièrement représentée aux figures 2 à 4. Le bras 5 est formé principalement de deux éléments 6 et 7 de section en "U" avec ailes inclinées, dont l'un 6 est monté coulissant à l'intérieur de l'autre 7, ce qui confère au bras 5 une structure télescopique, avec une section. de forme trapézoïdale. Les deux éléments 6 et 7 du bras 5 sont réalisables chacun d'une seule pièce, à partir d'une plaque en tôle métallique convenablement découpée puis pliée.The structure of each of the mooring arms 5 is more particularly shown in FIGS. 2 to 4. The arm 5 is formed mainly of two elements 6 and 7 of "U" section with inclined wings, one of which 6 is slidably mounted inside the other 7, which gives the arm 5 a telescopic structure, with a section. trapezoidal. The two elements 6 and 7 of the arm 5 can each be made in one piece, from a sheet metal plate suitably cut and then folded.

L'élément extérieur 7 du bras 5 comporte, à son extrémité antérieure, une patte repliée 8 sur laquelle est articulée, autour d'un axe 9 sensiblement horizontal, une petite chape 10. Cette chape 10 est elle-même articulée, suivant un axe 11 perpendiculaire au précédent, sur un côté du masque respiratoire 2, à proximité du cerclage 12 de la lunette 3. Il est à noter que le montage pivotant de la chape 10 sur la patte pliée 8 permet, en retournant cette chape 10, d'utiliser le même bras d'amarrage 5 indifféremment du côté doit et du côté gauche, malgré la dissymétrie de cette chape 10 par rapport à son axe d'articulation 9.The external element 7 of the arm 5 comprises, at its front end, a folded tab 8 on which is articulated, around a substantially horizontal axis 9, a small yoke 10. This yoke 10 is itself articulated, along an axis 11 perpendicular to the previous one, on one side of the breathing mask 2, near the hoop 12 of the telescope 3. It should be noted that the pivoting mounting of the yoke 10 on the folded tab 8 allows, by turning this yoke 10, to use the same mooring arm 5 on either the right side and the left side, despite the asymmetry of this yoke 10 with respect to its hinge axis 9.

L'élément intérieur 6 du bras 5 comporte, à son extrémité postérieure, une partie repliée 13 qui forme un crochet, destiné à coopérer avec l'un des crans d'accrochage 4 de la calotte 1 du casque. Le crochet 13 est lui-même pourvu de ceux encoches opposées 14 augmentant la sécurité de l'accrochage, en évitant toute séparation des crans 4 même en cas de traction oblique ou de choc.The inner element 6 of the arm 5 comprises, at its rear end, a folded part 13 which forms a hook, intended to cooperate with one of the hooking notches 4 of the cap 1 of the helmet. The hook 13 is itself provided with those opposite notches 14 increasing the security of the attachment, avoiding any separation of the notches 4 even in the event of oblique traction or impact.

Une liaison élastique entre les deux éléments 6 et 7 de chaque bras d'amarrage 5 est réalisée au moyen d'un ressort hélicoïdal 15 travaillant en compression, qui est logé à l'intérieur du bras 5, et enroulé autour d'une tige mobile 16. L'extrémité postérieure du ressort 15 est appuyée sur une patte 17 pliée à angle droit, prévue à l'extrémité arrière de l'élément extérieur 7 du bras 5, la patte 17 comportant un trou central 18 traversé par la tige 16. L'extrémité antérieure du ressort 15 est appuyée sur une collerette 19 de la tige 16. Cette tige 16 se prolonge, en avant de la collerette 19, de manière à dépasser à l'extérieur du bras 5.An elastic connection between the two elements 6 and 7 of each mooring arm 5 is produced by means of a helical spring 15 working in compression, which is housed inside the arm 5, and wound around a movable rod 16. The rear end of the spring 15 is supported on a lug 17 bent at a right angle, provided at the rear end of the external element 7 of the arm 5, the lug 17 comprising a central hole 18 through which the rod 16 passes. The front end of the spring 15 is supported on a flange 19 of the rod 16. This rod 16 extends, in front of the flange 19, so as to protrude outside the arm 5.

Une fente 20, ménagée vers l'avant de l'élément intérieur 6 du bras 5, est traversée avec un certain jeu par un taquet métallique coudé 21, qui possède une branche extérieure 22 formant un levier de manoeuvre, et une branche intérieure 23 percée d'un trou 24 traversé par la tige 16, cette deuxième branche étant apte à assurer le blocage de la tige 16 en toute position. Un petit ressort 25 en forme de lame pliée, logé à l'intérieur du bras 5, agit sur le taquet 21, dans le sens du rappel de la branche extérieure 22 contre le bras 5.A slot 20, formed towards the front of the internal element 6 of the arm 5, is crossed with a certain play by an elbow metal cleat 21, which has an external branch 22 forming an operating lever, and an internal branch 23 pierced a hole 24 through which the rod 16 passes, this second branch being capable of ensuring the blocking of the rod 16 in any position. A small spring 25 in the form of a folded blade, housed inside the arm 5, acts on the cleat 21, in the direction of the return of the outer branch 22 against the arm 5.

Dans sa position la plus avancée, la tige mobile 16 est arrêtée par la venue en butée de sa collerette 19 contre la branche intérieure 23 du taquet 21, comme le montrent les figures 3 et 5. Le ressort 15 possède alors sa longueur maximale autorisée par la position relative des deux éléments 6 et 7 du bras d'amarrage 5.In its most advanced position, the movable rod 16 is stopped by the abutment of its flange 19 against the inner branch 23 of the cleat 21, as shown in Figures 3 and 5. The spring 15 then has its maximum length allowed by the relative position of the two elements 6 and 7 of the mooring arm 5.

La figure 3 montre le bras 5 à l'état rétracté, lorsqu'il n'est pas accroché sur la calotte du casque. Lors de l'utilisation du masque respiratoire 2, comme le montre la figure 5, l'élément intérieur 6 du bras 5 est sorti de l'élément extérieur 7, jusqu'à ce que le bras 5 prenne une longueur suffisante pour permettre l'engagement du crochet 13 sur le cran correspondant 4 de la calotte 1 du casque. Le ressort 15 est alors comprimé davantage, et ce ressort 15, tendant à faire entrer l'élément intérieur 6 dans l'élément extérieur 7, assure l'application du masque respiratoire 2 sur le visage de l'utilisation.FIG. 3 shows the arm 5 in the retracted state, when it is not hung on the cap of the helmet. When using the respiratory mask 2, as shown in FIG. 5, the inner element 6 of the arm 5 is pulled out of the outer element 7, until the arm 5 takes a sufficient length to allow the commitment of the hook 13 on the corresponding notch 4 of the cap 1 of the helmet. The spring 15 is then compressed more, and this spring 15, tending to cause the inner element 6 to enter the outer element 7, ensures the application of the respiratory mask 2 on the face of use.

Lorsque l'utilisateur, portant ainsi simultanément le casque et le masque respiratoire, désire réajuster la force d'application du masque 2 sur von visage, notamment pour resserrer ce masque, il procède de la manière suivante, illustrée par la figure 6, pour chaque bras d'amarrage 5:When the user, thus wearing simultaneously the helmet and the respiratory mask, wishes to readjust the force of application of the mask 2 on the face, in particular to tighten this mask, he proceeds as follows, illustrated by FIG. 6, for each mooring arm 5:

En repoussant l'extrémité antérieure de la tige 16, suivant la flèche 27, l'utilisateur provoque le décoincement du taquet 21 et fait reculer la tige 16 avec sa collerette 19, ce qui comprime encore plus fortement le ressort 15. Le taquet 21, étant ramené dans sa position initiale par le ressort 25, assure le blocage de la tige 16 dans sa nouvelle position.By pushing back the anterior end of the rod 16, along arrow 27, the user causes the cleat 21 to come off and causes the rod 16 to move back with its flange 19, which compresses the spring 15 even more strongly. The cleat 21, being returned to its initial position by the spring 25, ensures the locking of the rod 16 in its new position.

Il est à noter que le recul de la tige mobile 16 est permis par un trou supplémentaire 28 ménagé dans la partie repliée 13 qui forme le crochet.It should be noted that the retraction of the movable rod 16 is allowed by an additional hole 28 formed in the folded part 13 which forms the hook.

Le dispositif précédemment décrit permet aussi de précontraindre le ressort 15 dès la mise en place du masque respiratoire 2. Ce dispositif permet en outre, inversement, de diminuer la compression du ressort 15, sans quitter le masque 2, la branche 23 du taquet 21 assurant un "auto-blocage" de la tige mobile 16 dans toute position désirée.The device described above also makes it possible to prestress the spring 15 as soon as the respiratory mask 2 is put in place. This device also makes it possible, conversely, to reduce the compression of the spring 15, without leaving the mask 2, the branch 23 of the cleat 21 ensuring "self-locking" of the movable rod 16 in any desired position.

Plus particulièrement, pour annuler la compression supplémentaire du ressort 15 due à l'enfoncement de la tige 16 suivant la flèche 27, il suffit d'écarter la branche extérieure 22 du taquet 21 suivant la flèche 26. L'auto-blocage de la tige 16 dans la branche intérieure 23 du taquet 21 est alors supprimé, et le ressort 15 repousse la collerette 19 pour l'amener en butée sur la branche 23 du taquet 21, relâchant ainsi la compression supplémentaire du ressort 15.More particularly, to cancel the additional compression of the spring 15 due to the depression of the rod 16 along the arrow 27, it suffices to move aside the outer branch 22 of the cleat 21 along the arrow 26. The self-locking of the rod 16 in the inner branch 23 of the cleat 21 is then eliminated, and the spring 15 pushes back the flange 19 to bring it into abutment on the branch 23 of the cleat 21, thereby releasing the additional compression of the spring 15.

Comme il va de soi, l'invention ne se limite pas à la seule forme d'exécution de ce dispositif pour la fixation d'un masque respiratoire sur un casque de protection qui a été décrite ci-dessus, à titre d'exemple; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application respectant le même principe, tel qu'il ressort des revendications qui suivent.It goes without saying that the invention is not limited to the sole embodiment of this device for attaching a respiratory mask to a protective helmet which has been described above, by way of example; on the contrary, it embraces all of the variant embodiments and applications respecting the same principle, as is apparent from the claims which follow.

Claims (12)

1. A device for fixing a detachable breathing mask onto a safety helmet, the device comprising two lateral fastening arms (5), each constituted by two elements (6, 7) which are slidably mounted with respect to one another and associated with an internal spring (15) urging them to engage within one another, one of the elements (7) of each fastening arm (5) being pivoted at its forward end (8) on one side of the breathing mask (2), whilst the other element (6) of said arm (5) is provided at its rear end with a hook (13) intended to cooperate with a catch (4) located on one side of the headpiece (1) of the helmet, characterised in that the internal spring (15) of each fastening arm (5) is a helicoidal spring compressed between a bearing surface (17) associated with one of the elements (7) of the arms (5) and an abutment (19) associated with an element (16) movable in the longitudinal direction of the arm (5), a retaining means (21) being provided on this arm (5) to lock the movable element (16) in any position corresponding to the required compression of the spring (15), or to free said movable element (16), thus permitting the adjustment or readjustment of the compression of the spring (15).
2. A device for fixing a breathing mask onto a safety helmet according to Claim 1, characterised in that the afore-mentioned movable element (16) is a movable rod, around which the helicoidal spring (15) is wound, the movable rod (16) being provided with a flange (19) on which the forward end of the spring (15) bears, and the movable rod (16) extending forwardly of the flange (19) so as to project beyond the exterior of the arm (5).
3. A device for fixing a breathing mask onto a safety helmet according to Claim 2, characterised in that the rear end of the helicoidal spring (15) bears on a bent lug (17), provided at the end of an element (7) of each fastening arm (5), this bent lug (17) having a hole (18) through which the movable rod (16) passes.
4. A device for fixing a breathing mask onto a safety helmet according to Claim 3, characterised in that an additional hole (28), through which the movable rod (16) also passes when it is withdrawn, is formed in the portion (13) forming the hook of each fastening arm (5). _
5. A device for fixing a breathing mask onto a safety helmet according to any one of Claims 1 to 4, characterised in that the retaining means is made in the form of a pivotal lug (21) carried by one of the elements (6) of each fastening arm (5), this lug (21) having an external portion (22) to enable it to be operated, and an internal portion (23) cooperating with the movable rod (16) to ensure the latter is locked in any desired position.
6. A device for fixing a breathing mask onto a safety helmet according to Claim 5, characterised in that the pivotal lug (21), having the form of an elbow, passes with a certain amount of play through a slot (20) formed in one of the elements (6) of each fastening arm (5), the internal portion (23) of the lug (21) having a through hole (24) through which passes the movable rod (16).
7. A device for fixing a breathing mask onto a safety helmet according to Claim 5 or 6, characterised in that there is provided, within each fastening arm (5), another spring (25) acting on the lug (21) to return it to the position in which the movable rod (16) is locked.
8. A device for fixing a breathing mask onto a safety helmet according to any one of Claims 1 to 7, characterised in that the two elements (6, 7) of each fastening arm (5) are both made from metal plates which are cut and bent.
9. A device for fixing a breathing mask onto a safety helmet according to Claim 8, characterised in that the two elements (6, 7) of each fastening arm (5) are bent such that each has a "U"-shaped section with inclined wings, giving the whole arm (5) a trapezoidal section, the profiles of the two elements (6, 7) fitting into one another.
10. A device for fixing a breathing mask onto a safety helmet according to Claim 8 or 9, characterised in that the hook of each fastening arm (5) is formed by a bent-back portion (13) of the rear end of one of the elements (6) of the arm.
11. A device for fixing a breathing mask onto a safety helmet according to Claim 10, characterised in that each hook (13) is provided with two opposing notches (14).
12. A device for fixing a breathing mask onto a safety helmet according to any one of Claims 8 to 11, characterised in that the forward end of one of the elements (7) of the fastening arm (5) has another bent-back portion (8), on which a yoke (10) is asymmetrically pivoted, the yoke itself being pivoted on one side of the breathing mask (2), so that by turning the yoke (10) round, the same fastening arm (5) can be mounted either on the right or the left side of the breathing mask (2).
EP87420022A 1986-02-25 1987-01-22 Breathing mask fixing system for protective helmet Expired - Lifetime EP0236240B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420022T ATE52038T1 (en) 1986-02-25 1987-01-22 DEVICE FOR FIXING A RESPIRATOR MASK ON A SAFETY HELMET.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8603301 1986-02-25
FR8603301A FR2594699B1 (en) 1986-02-25 1986-02-25 DEVICE FOR FIXING A RESPIRATORY MASK ON A PROTECTIVE HELMET

Publications (2)

Publication Number Publication Date
EP0236240A1 EP0236240A1 (en) 1987-09-09
EP0236240B1 true EP0236240B1 (en) 1990-04-18

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EP87420022A Expired - Lifetime EP0236240B1 (en) 1986-02-25 1987-01-22 Breathing mask fixing system for protective helmet

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US (1) US4734940A (en)
EP (1) EP0236240B1 (en)
JP (1) JPS62201164A (en)
AT (1) ATE52038T1 (en)
AU (1) AU587683B2 (en)
DE (1) DE3762311D1 (en)
FR (1) FR2594699B1 (en)
SU (1) SU1477235A3 (en)

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AT412067B (en) * 1994-10-24 2004-09-27 Rosenbauer Oesterreich Ges M B PROTECTIVE HELMET WITH A CONNECTING DEVICE FOR A RESPIRATORY MASK

Also Published As

Publication number Publication date
US4734940A (en) 1988-04-05
EP0236240A1 (en) 1987-09-09
ATE52038T1 (en) 1990-05-15
SU1477235A3 (en) 1989-04-30
DE3762311D1 (en) 1990-05-23
FR2594699B1 (en) 1988-05-13
AU587683B2 (en) 1989-08-24
AU6917887A (en) 1987-08-27
JPS62201164A (en) 1987-09-04
FR2594699A1 (en) 1987-08-28

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