EP2361656B1 - Masque respiratoire - Google Patents

Masque respiratoire Download PDF

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Publication number
EP2361656B1
EP2361656B1 EP10154805.5A EP10154805A EP2361656B1 EP 2361656 B1 EP2361656 B1 EP 2361656B1 EP 10154805 A EP10154805 A EP 10154805A EP 2361656 B1 EP2361656 B1 EP 2361656B1
Authority
EP
European Patent Office
Prior art keywords
switching position
sliding element
respiratory mask
mask according
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10154805.5A
Other languages
German (de)
English (en)
Other versions
EP2361656A1 (fr
Inventor
Alexander Busch
Dirk Feil
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.)
Draeger Safety AG and Co KGaA
Original Assignee
Draeger Safety 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 Draeger Safety AG and Co KGaA filed Critical Draeger Safety AG and Co KGaA
Priority to EP10154805.5A priority Critical patent/EP2361656B1/fr
Priority to US13/019,745 priority patent/US8631794B2/en
Publication of EP2361656A1 publication Critical patent/EP2361656A1/fr
Application granted granted Critical
Publication of EP2361656B1 publication Critical patent/EP2361656B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • 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
    • A62B18/10—Valves

Definitions

  • the invention relates to a respirator for normal pressure and overpressure operation.
  • Respiratory masks are used, for example, for combating harmful fires and in dealing with dangerous substances and goods. Respiratory masks with the operating modes "normal pressure” and “overpressure” are known.
  • the "normal pressure" operating mode is present, for example, when a respiratory protection filter is connected to the respiratory mask.
  • the pressure level in the interior of the respirator corresponds to that of the atmospheric pressure.
  • the operating mode "overpressure" is present, for example, in the case of a connection of a breathing apparatus of a compressed air breathing apparatus to the respiratory mask.
  • the pressure level in the interior of the respirator is greater than that of the atmospheric pressure.
  • the generation of overpressure is not required for every application.
  • the air inhaled directly by the mask wearer is cleaned, for example, by a filter located on a breathing connection.
  • the exhalation valve is normally closed and only opens during the exhalation phase of the mask wearer due to the exhalation pressure that arises in the mask.
  • the pressure level within the mask corresponds to the level of the external pressure.
  • the pressure level within the mask shifts by a certain positive amount compared to the level of the outside atmospheric pressure, so that the mask internal pressure is above the respective atmospheric pressure during both inhalation and exhalation.
  • the exhalation valve also opens here during the Exhalation due to the exhalation pressure in the mask.
  • the exhalation valve must close against the now existing pressure level gradient.
  • the exhalation valve thus has different pressures depending on the operating mode.
  • the exhalation valve must therefore be controlled according to the respective operating mode in the case of a respirator with the operating modes "normal pressure” and "overpressure".
  • the IT 1 227 248 discloses a spring opposing the opening of the exhaust valve which acts on a pin projecting outside the mask.
  • the pin is arranged to be pressed to increase the pressure of the spring when the internal pressure of the mask is increased, for example, by connecting a SCBA.
  • the DE 10 2004 052 173 B3 shows a respirator of the type mentioned, in which a bias of a valve spring via an adjusting means is changeable, wherein the adjusting means is designed as a pivotable about an axis of rotation angle lever.
  • GB 2 264 646 A describes a respirator with the features of the preamble of claim 1.
  • This respirator has a complicated mechanism which is designed to automatically by the process of inserting the breathing air hose to the mask switching the mode from "normal operation” to "over-pressure operation” cause.
  • the invention has for its object to improve a respirator with the modes "normal pressure” and “pressure” so that a switch between the modes by means of a simple mechanical mechanism is possible.
  • the respiratory mask according to the invention comprises at least one respiratory connection, an exhalation valve with a valve spring, an adjusting element influencing the pretension of the valve spring and a sliding element with a first and a second switching position.
  • the sliding element is further designed to act in a translational movement of the first switching position in the second switching position on the adjusting element, so that a change in the bias of the valve spring is reached and thus switching from the operating mode "normal pressure” to the operating mode "overpressure” is executable, where
  • the adjusting element is designed as a pivotable lever arm.
  • the lever arm has a transmission element, which is formed in an upper position of the lever arm obliquely to the plane of the sliding element, wherein the sliding element on the slope of the transmission element is movable and the transmission element is arranged on the lever arm, that during a movement of the sliding element of the Lever arm presses on the valve spring.
  • the sliding element at the end faces in each case at least one locking element for locking the sliding element in the first switching position and in the second switching position.
  • the sliding element is designed as an elastic double clasp with two locking elements on the end faces, wherein a moving together of the two locking elements of an end side causes a movement apart of the locking elements of the other end side.
  • this elastic double clasp with a cover with two frontal openings which surrounds the sliding element, protrude both in the first switching position and in the second switching position, the respective end-side locking elements through the respective opening of the cover.
  • the locking in the respective desired switching position is inherently automatic due to the spring action of the double clasp.
  • a locking of the sliding element can be effected in a simple manner both in the first and in the second switching position.
  • the locking elements each have a grip area. With the help of the grip areas, the sliding element can be released from the lock and moved manually in a simple manner.
  • At least one locking element is designed as a visual indicator for detecting a setting of the operating modes "normal pressure” and "overpressure".
  • the at least one locking element is preferably arranged on the mask body such that the position of the locking element can be recognized by the mask wearer by the mask wearer. From the mask wearer thus the respective set operating mode of the respirator is easily recognizable.
  • a signal generator for detecting the first and the second switching position of the sliding element.
  • a detection element may be provided, which is preferably as an induction proximity switch, a reed switch or as a Hall sensor is executed.
  • the detection element is preferably arranged in a mask body.
  • the operating modes "normal pressure” and “overpressure” are visually displayable in the mask sight.
  • Fig. 1 is a schematic section of the respirator according to the invention with a mask body 10 and a mask sight 12th shown.
  • a breathing port 14 is provided on the mask body 10.
  • the breathing port 14 has in the illustrated structural design on its front side an opening 15 for connection of a regulator in the operating mode "overpressure".
  • connection of a filter takes place at a laterally mounted in the mask body second port.
  • a sliding member 22 (shown in FIG Fig. 3 ) is surrounded by a cover 38.
  • the sliding element 22 can change over a translational movement between a first switching position 24 and a second switching position 26.
  • An arrow 48 shows the direction of movement between the first switching position 24 and the second switching position 26.
  • the sliding element 22 acts in the translational movement on an adjusting element 18.
  • the adjusting element 18 is in Fig. 2 represented and formed as a pivotable lever arm 28.
  • a transmission element 30 is formed, which is in an upper position of the lever arm 28 obliquely to the plane of the sliding element 22.
  • the sliding element 22 acts on a movement between the two switching positions 24 and 26 on the slope of the transmission element 30.
  • the transmission element 30 is arranged on the lever arm 28 that during the movement of the sliding element 22 of the lever arm 28 presses on a valve spring 20.
  • the valve spring 20 In the in Fig. 1 In the first switching position 24, the valve spring 20 is in a relieved state and thereby generates only a minimum bias on the exhalation valve 16.
  • the first switching position 24 corresponds to the operating mode "normal pressure".
  • Fig. 3 schematically shows a structure of the sliding element 22.
  • the sliding element 22 is formed as an elastic double clasp 34.
  • the elastic double clasp 34 consists of two lateral webs, which are interconnected via a connecting web 36.
  • the connecting web 36 is elastic.
  • the locking elements 32 are arranged. A moving together of the two locking elements 32 on one end face causes a disengagement of the two locking elements 32 of the other end face.
  • the sliding element 22 is movably guided within the cover 38.
  • the cover 38 in each case has two end openings 40.
  • the front-side locking elements 32 protrude through the openings 40 of the cover 38 and fix the sliding element 22 in the first switching position 24th
  • the locking elements 32 also have a grip area 42. With the handle portion 42, the sliding element 22 by a movement of the locking elements 32 in the first switching position 24 to each other from the lock releasably and in the direction of the second switching position 26 manually displaceable. The sliding element 22 can be moved under the cover 38 in the second switching position 26. In the second switching position 26, the locking elements 32 protrude through the openings 40 of the cover 38 and thus fix the sliding element 22 in the second switching position 26 (shown in FIG Fig. 4 ).
  • the sliding element 22 is moved over the slope of the transmission element 30, wherein the transmission element is fixedly coupled to the lever arm 28 and this presses on the valve spring 20.
  • the opening pressure of the exhalation valve 16 is increased.
  • the bias of the valve spring 20 and thus the opening pressure of the exhalation valve 16 can be influenced.
  • Fig. 4 shows the sliding element 22 in the second switching position 26.
  • the valve spring 20 In the switching position 26, the valve spring 20, the maximum bias on. Of the Lever arm 28 is located near the exhalation valve 16 (shown in FIG Fig. 5 ).
  • This second switching position 26 corresponds to the operating mode "overpressure".
  • the end-side locking element 32 are designed so that they are visible through the mask sight 12 of the mask wearer.
  • the locking elements 32 thus have a double function.
  • the mask wearer can advantageously recognize the setting of the respirator mask according to the invention in the "normal pressure” mode and the "overpressure” mode in a simple manner.
  • FIGS. 6 and 7 an embodiment with a provided on the sliding element 22 signal generator 46. Furthermore, a detection element 50 is provided, which is preferably arranged in the mask body 10.
  • Fig. 6 shows the sliding element 22 in the first switching position 24 with a relieved valve spring 20.
  • the valve spring 20 has a minimum bias, whereby a small opening pressure for opening the exhalation valve 16 is required.
  • "normal pressure" detects the detection element 50 by means of a signal from the signal generator 46, the position of the sliding element 22.
  • the detection element 50 is connected to a arranged in the mask body 10 display element (not shown), which optically signals the mode "normal operation".
  • the display element may be designed as an LED.
  • Fig. 7 shows the sliding element 22 in the second switching position 26.
  • the valve spring 20 has a maximum bias, whereby the opening pressure the exhalation valve 16 is increased.
  • the position of the sliding element 22 is detected by the detection element 50, which in turn detects a signal of the signal element 46 arranged on the sliding element 22.
  • the second switching position 26 of the sliding element 22 can be detected by the detection element 50 and thus an adjustment of the operating mode "overpressure" on the respirator.
  • a display element connected to the detection element 50 in the mask body 10 (not shown) signals the operating mode "overpressure".
  • the detection element 50 may be formed as an induction proximity switch or as a magnetic switch in the embodiment of a reed switch or Hall sensor.

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)

Claims (12)

  1. Masque de protection respiratoire dévolu à un fonctionnement sous pression normale et en surpression, comprenant au moins un raccord de respiration (14), une valve d'expiration (16) pourvue d'un ressort obturateur (20), un élément de réglage (18) influençant la précontrainte dudit ressort obturateur (20), un élément coulissant présentant une première position de commutation (24) et une seconde position de commutation (26), ledit élément coulissant (22) étant réalisé de façon à agir sur ledit élément de réglage (18) lors d'un mouvement translatoire de la première position de commutation (24) à la seconde position de commutation (26), de manière qu'une modification de la précontrainte du ressort obturateur (20) puisse être atteinte et qu'il soit possible, de la sorte, d'opérer une commutation passant d'un mode de fonctionnement "pression normale" à un mode de fonctionnement "surpression", caractérisé par le fait que l'élément de réglage (18) est réalisé sous la forme d'un bras de levier pivotant (28) ; et par le fait que ledit bras de levier (28) comporte au moins un élément de transmission (30) qui offre, en un emplacement supérieur dudit bras de levier (28), une réalisation oblique par rapport à un plan de l'élément coulissant (22), l'élément coulissant (22) étant déplacé, lors du mouvement translatoire de la première position de commutation à la seconde position de commutation sur la plan incliné de l'élément de transmission (30) et ledit élément de transmission (30) étant implanté, sur ledit bras de levier (28), de façon telle que ledit bras de levier (28) soit poussé vers le ressort obturateur (20) lors d'un mouvement dudit élément coulissant (22) de la première position de commutation (24) à la seconde position de commutation (26).
  2. Masque de protection respiratoire selon la revendication 1, caractérisé par le fait que l'élément coulissant (22) est muni, aux faces frontales, d'au moins un élément respectif de verrouillage (32) affecté à un verrouillage dudit élément coulissant (22) dans la première position de commutation (24) et dans la seconde position de commutation (26).
  3. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par le fait que l'élément coulissant (22) est réalisé sous la forme d'une barrette élastique double (34), dotée de deux éléments respectifs de verrouillage (32) aux faces frontales, un mouvement conjoint des deux éléments de verrouillage (32) d'une face frontale provoquant un écartement mutuel des éléments de verrouillage (32) de l'autre face frontale.
  4. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par la présence d'une pièce de recouvrement (38) percée de deux orifices respectifs (40) pratiqués aux faces frontales, ladite pièce de recouvrement (38) entourant l'élément coulissant (22).
  5. Masque de protection respiratoire selon la revendication 4, caractérisé par le fait que les éléments de verrouillage situés aux faces frontales font saillie, dans la première position de commutation (24) et dans la seconde position de commutation (26), à travers les orifices respectifs (40) de la pièce de recouvrement (38) et provoquent, en ces emplacements, un verrouillage de l'élément coulissant (22).
  6. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par le fait que les éléments de verrouillage (32) présentent une zone de préhension (42) au moyen de laquelle l'élément coulissant (22) peut être libéré du verrouillage, et animé de coulissements manuels.
  7. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par le fait qu'au moins un élément de verrouillage est réalisé sous la forme d'un indicateur visuel (44), en vue d'identifier un réglage des modes de fonctionnement "pression normale" et "surpression".
  8. Masque de protection respiratoire selon la revendication 7, caractérisé par le fait qu'au moins un élément de verrouillage (32) occupe, sur un corps (10) dudit masque, une position telle que l'emplacement dudit élément de verrouillage (32) puisse être repéré à travers une visière (12) dudit masque.
  9. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par le fait qu'un générateur de signaux (46), prévu sur l'élément coulissant (22), signalise la première position de commutation (24) et la seconde position de commutation (26) dudit élément coulissant (22).
  10. Masque de protection respiratoire selon la revendication 9, caractérisé par la présence d'un élément de détection (50) réalisé, de préférence, sous la forme d'un interrupteur inductif de proximité, d'un commutateur à lames ou d'un capteur à effet Hall.
  11. Masque de protection respiratoire selon la revendication 10, caractérisé par le fait que l'élément de détection (50) est logé dans un corps (10) dudit masque.
  12. Masque de protection respiratoire selon l'une des revendications précédentes, caractérisé par le fait que les modes de fonctionnement "pression normale" et "surpression" peuvent être affichés optiquement dans la visière (12) dudit masque.
EP10154805.5A 2010-02-26 2010-02-26 Masque respiratoire Not-in-force EP2361656B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10154805.5A EP2361656B1 (fr) 2010-02-26 2010-02-26 Masque respiratoire
US13/019,745 US8631794B2 (en) 2010-02-26 2011-02-02 Gas mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10154805.5A EP2361656B1 (fr) 2010-02-26 2010-02-26 Masque respiratoire

Publications (2)

Publication Number Publication Date
EP2361656A1 EP2361656A1 (fr) 2011-08-31
EP2361656B1 true EP2361656B1 (fr) 2016-06-08

Family

ID=42310712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10154805.5A Not-in-force EP2361656B1 (fr) 2010-02-26 2010-02-26 Masque respiratoire

Country Status (2)

Country Link
US (1) US8631794B2 (fr)
EP (1) EP2361656B1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214860B3 (de) * 2012-08-21 2013-10-31 Dräger Safety AG & Co. KGaA Atemschutzgerät
USD881380S1 (en) 2017-10-16 2020-04-14 Gentex Corporation Respirator
US10322312B1 (en) * 2018-06-01 2019-06-18 TrainingMask L.L.C. Resistance and filtration breathing device
JP7103640B2 (ja) * 2018-10-16 2022-07-20 山本光学株式会社 マスク密着度判定装置
WO2022056253A1 (fr) * 2020-09-11 2022-03-17 Msa Technology, Llc Appareil respiratoire à double mode

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7411883L (sv) * 1974-09-20 1976-03-22 Testa Lab A S Ventilanordning for lungventilationssystem
US4606340A (en) * 1983-07-14 1986-08-19 Figgie International Inc. Combined pressure compensating exhalation and anti-suffocation valve
US5086768A (en) * 1987-02-24 1992-02-11 Filcon Corporation Respiratory protective device
IT1227248B (it) * 1988-09-30 1991-03-28 Spasciani Riccardo Spa Maschera per dispositivo di respirazione ad aria in pressione o meno
US5159641A (en) * 1991-07-31 1992-10-27 Figgie International, Inc. Microphone circuit control mechanism for breathing apparatus
GB2264646A (en) * 1992-02-12 1993-09-08 Sabre Safety Ltd Breathing apparatus
DE4237294C1 (de) * 1992-11-05 1993-11-25 Draegerwerk Ag Atemschutzmaske mit Überdruck im Maskeninnenraum
US5623923A (en) * 1993-06-09 1997-04-29 Intertechnique Respiratory equipment with comfort adjustment
IT232743Y1 (it) * 1994-02-09 2000-01-19 Spasciani Riccardo Spa Maschera perfezionata per dispositivi di respirazione ad aria in pressione o meno
GB9619459D0 (en) * 1996-09-18 1996-10-30 Jackson Peter J Breathing apparatus
DE102004052173B3 (de) * 2004-10-27 2006-01-12 Dräger Safety AG & Co. KGaA Atemschutzmaske für Normaldruck- und Überdruckbetrieb

Also Published As

Publication number Publication date
US8631794B2 (en) 2014-01-21
EP2361656A1 (fr) 2011-08-31
US20110209712A1 (en) 2011-09-01

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