EP0764452A2 - Respiratory mask - Google Patents

Respiratory mask Download PDF

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Publication number
EP0764452A2
EP0764452A2 EP96113718A EP96113718A EP0764452A2 EP 0764452 A2 EP0764452 A2 EP 0764452A2 EP 96113718 A EP96113718 A EP 96113718A EP 96113718 A EP96113718 A EP 96113718A EP 0764452 A2 EP0764452 A2 EP 0764452A2
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EP
European Patent Office
Prior art keywords
mask
filter
filter element
mask body
mask according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96113718A
Other languages
German (de)
French (fr)
Other versions
EP0764452A3 (en
EP0764452B1 (en
Inventor
Klaus-Dieter Dahrendorf
Günter Von Kopp
Joachim Schlobohm
Wolfgang Drews
Joachim W. Siegel
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.)
Auergesellschaft GmbH
Draegerwerk AG and Co KGaA
Original Assignee
Auergesellschaft GmbH
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.)
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Publication date
Application filed by Auergesellschaft GmbH, Draegerwerk AG and Co KGaA filed Critical Auergesellschaft GmbH
Publication of EP0764452A2 publication Critical patent/EP0764452A2/en
Publication of EP0764452A3 publication Critical patent/EP0764452A3/en
Application granted granted Critical
Publication of EP0764452B1 publication Critical patent/EP0764452B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators

Definitions

  • the invention relates to a breathing mask according to the preamble of patent claim 1.
  • a breathing mask with a mask body designed as a full mask has become known from DE-PS 17 08 046.
  • the well-known breathing mask consists of a mask body with connection options for filters and breathing valves.
  • the mask body is designed so that two filters can be attached laterally in the cheek area of the mask body, or a single filter is inserted into the mask body in the middle of the mask body in the mouth area.
  • two flat disks are provided, which are fastened directly in the mask body material.
  • a disadvantage of the known respirator mask is that the center of gravity of the respirator mask is positioned in front of it, due to the filters attached to the side, or the filter located in the center of the mask body, which considerably impairs the wearing comfort.
  • the protruding filters interfere with the operation of devices.
  • the two panes in the mask body limit the field of view to an area immediately in front of the eyes of the mask wearer and do not allow a view in the side area of the mask body.
  • inadequate adaptation of the panes to optical devices is possible, since the panes are firmly integrated into the mask body material. An angular offset between the panes and the lenses of the optical device can result in distortions or reflections which make the use of such devices more difficult.
  • DE-GM 10 12 689 discloses a face mask with four eye glasses inserted into the mask body, two of which are arranged in the area of the center of the mask body and the other two eye glasses are arranged in the side areas of the mask body.
  • the segmented division of the eye glasses increases the viewing area compared to an arrangement with only two glasses, but the area of perception is limited in places to the individual viewing areas of the eye glasses, which impairs the use of the mask in the close range.
  • the invention has for its object to improve a respirator of the type mentioned in such a way that the wearing properties when the filter is attached are improved with respect to the center of gravity, a larger field of vision is available and there is good adaptability to optical devices.
  • the advantage of the invention consists essentially in the fact that, by designing the filter as a U-shaped filter element encompassing the mask body from the center of the mask body to the cheek area, the center of gravity is shifted to the mask wearer and the dead space in the cheek area of the respirator mask is particularly well utilized becomes, which significantly increases the usability of the respirator.
  • the lenses are made of solid, optical material with good transmission properties.
  • the mask body in the area of the filter element is designed as a filter receptacle shaped corresponding to the inner surface of the filter element, and when the filter element is pushed onto the mask body, the inner surface of the filter lies flush against the filter receptacle.
  • the filter connection of the filter element is expediently arranged in the center of the mask body.
  • the filter connection can be designed as a plug, screw or bayonet connection, the plug connection being the preferred embodiment.
  • the lenses are tapered towards the center of the mask body, e.g. triangular first viewing panes, which are located in the main viewing area of the mask wearer, and as round tapering to the rear, e.g. semicircular second lenses, which are arranged in the side region of the mask body.
  • Flat or spherically curved glasses can be used as viewing panes.
  • By fastening the viewing panes within the flexible elastomer section they can be displaced and tilted relative to one another and can therefore be adapted particularly well to optical devices. Due to the flexibility of the elastomer section, it is also possible to use the viewing panes, e.g. when putting on an optical device, closer to the face, i.e. to the eyes of the mask wearer.
  • the viewing windows can be molded or glued into the elastomer section.
  • the elastomer section is made from a clear, thermoplastic elastomer (TPE).
  • a holder for receiving a speech membrane is expediently attached in the middle of the mask body above the filter element.
  • the speech membrane is located approximately in the mouth area of the mask wearer. In this way, particularly good communication is possible.
  • the exhalation valve is conveniently located at the deepest point of the mask body, i.e. attached below the filter element in the chin area. Any condensation water inside the mask body can flow directly into the environment.
  • a total of six attachment points are provided on the mask body for attaching a head strap, with two of the attachment points on the mask body being at the level of the filter element in order to support the respirator mask in the area of the center of gravity. In this way, particularly pleasant wearing properties of the respiratory mask are achieved.
  • the fastening points located at the level of the filter element can also be attached directly to the filter element, or there are fastening points both on the mask body and on the filter element.
  • the inclusion of the filter element in the attachment of the headgear further improves the support of the breathing mask in the area of focus.
  • the filter element is designed so that the gas inlet openings at the ends of the side parts, i.e. lie on the leg ends of the U-shaped filter element.
  • the gas flow then takes place symmetrically from the two opposite gas inlet openings to the centrally arranged filter connection.
  • the filter element contains individual sorption layers, e.g. made of activated carbon, for the adsorption of harmful gases.
  • a useful sequence of the air cleaning layers within the filter element is a nonwoven body as a particle separator and one or more activated carbon cartridges for the harmful gas adsorption.
  • the filter element is advantageously designed as a cassette filter with an openable filter housing, into which individual air cleaning layers can be inserted or can also be removed therefrom after use.
  • the preparation of the cassette filter is considerably simplified since the filter housing can be used several times and only the air cleaning layers are replaced have to. The used sorption layers can thus be immediately reprocessed.
  • FIG. 1 shows a breathing mask 1 with a mask body 2 designed as a full mask, which is made of a thermoplastic elastomer (TPE) and at the same time is designed as a sealing edge to the face of a mask wearer (not shown in FIG. 1).
  • the mask body 2 is designed symmetrically with respect to the center of the mask body 3, as the axis of symmetry of the respirator mask 1.
  • a rectangular cutout is provided, which is closed with a correspondingly designed, rectangular, flexible and transparent elastomer section 4.
  • the elastomer section 4 also consists of a TPE. In the elastomer section 4, which is highlighted by a hatching in FIG.
  • first viewing panes 5 tapering towards the center of the mask body 3 and semicircular second viewing panes 6 are inserted, which are seen from the center of the mask body 3 behind the first viewing panes 5 in Side area of the mask body 2 lie.
  • the first viewing panes 5 form an angle to one another of approximately 170 degrees and the second viewing panes 6 are angled by approximately 120 degrees with respect to the respectively adjacent first viewing panes 5. In this way it is achieved that both in the front area and in the side area of the mask body 2, the viewing windows 5, 6 only Mask body 2, the lenses 5, 6 have only a slight angular offset with respect to the visual axis of the mask wearer.
  • the lower part of the mask body 2 is designed as a U-shaped filter receptacle 8 with a breath connection 9 from the center of the mask body 3 to the cheek region 7. Above the breathing connection 9 there is a holder 10 for a speech membrane, not shown in FIG. 1, and below the breathing connection 9 there is an exhalation valve 11.
  • a U-shaped curved cassette filter 12 as a filter element with a filter connection 13 has an inner surface 14 which is shaped corresponding to the filter receptacle 8. In this way, the cassette filter 12 can be pushed onto the filter holder 8 with a precise fit. When the cassette filter 12 is pushed onto the filter receptacle 8 along the arrow 19, the filter connection 13 engages in the breathing connection 9.
  • FIG. 1 shows the respiratory protection mask 1 with the cassette filter 12 removed.
  • FIG. 2 shows the respiratory protection mask 1 with the cassette filter 12 attached. Identical components in FIG. 2 are identified by the same reference numerals in FIG. 1.
  • FIGS. 1 and 2 Six attachment points 20, 21, 22, 23, 24, 25 are provided on the mask body 2 for a head harness 26, two of the attachment points 22, 24 being attached to the mask body 2 at the level of the filter holder 8 in order to support the mask body 2 in the region of its center of gravity .
  • the head strap 26 is sewn together from individual, biaxially stretchable pieces of fabric.
  • the relaxed state of the head strap 26 is illustrated in FIGS. 1 and 2. Due to the concave shape of the head strap 26 in the relaxed state, there is a particularly good fit on the head of the mask wearer, not shown in FIGS. 1 and 2.

Abstract

The improved breathing mask has a full face design with a detachable filter element (12) which has a curved shape. This allows the outer ends of the filter element to lie against the cheeks of the wearer, with the centre of mass of the mask set back towards the mask. The lenses have plane central panels (5) and shaped rear panels (6) mounted in the elastic mask (4) which is made of transparent plastics. The filter element has a simple screw fitting or bayonet fitting to the air intake port (9). An outlet port (11) under the mask and a speaking membrane (10) in the centre of the mask complete the design. The mask is attached to an elastic webbing to fit over the head of the wearer.

Description

Die Erfindung betrifft eine Atemschutzmaske nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a breathing mask according to the preamble of patent claim 1.

Eine Atemschutzmaske mit einem als Vollmaske ausgebildeten Maskenkörper ist aus der DE-PS 17 08 046 bekanntgeworden. Die bekannte Atemschutzmaske besteht aus einem Maskenkörper mit Anschlußmöglichkeiten für Filter und Atemventile. Der Maskenkörper ist so konzipiert, daß zwei Filter seitlich im Wangenbereich des Maskenkörpers angebracht werden können, oder es wird ein einzelnes Filter in der Maskenkörpermitte im Mundbereich in den Maskenkörper eingesetzt. Im Sichtbereich des Maskenkörpers sind zwei plane Scheiben vorgesehen, die unmittelbar im Maskenkörpermaterial befestigt sind.A breathing mask with a mask body designed as a full mask has become known from DE-PS 17 08 046. The well-known breathing mask consists of a mask body with connection options for filters and breathing valves. The mask body is designed so that two filters can be attached laterally in the cheek area of the mask body, or a single filter is inserted into the mask body in the middle of the mask body in the mouth area. In the visible area of the mask body, two flat disks are provided, which are fastened directly in the mask body material.

Nachteilig bei der bekannten Atemschutzmaske ist, daß durch die seitlich angebrachten Filter, oder auch das in der Maskenkörpermitte befindliche Filter, der Schwerpunkt der Atemschutzmaske vorgelagert ist, was den Tragekomfort erheblich beeinträchtigt. Außerdem stören die abstehenden Filter beim Bedienen von Geräten. Die beiden Scheiben im Maskenkörper begrenzen das Sichtfeld auf einen unmittelbar vor den Augen des Maskenträgers liegenden Bereich und erlauben keine Sicht im Seitenbereich des Maskenkörpers. Außerdem ist bei der bekannten Atemschutzmaske nur eine unzureichende Adaptierung der Scheiben an optische Geräte möglich, da die Scheiben fest in das Maskenkörpermaterial eingebunden sind. Durch einen Winkelversatz zwischen den Scheiben und den Linsen des optischen Gerätes können Verzerrungen oder auch Reflexionen entstehen, die die Benutzung derartiger Geräte erschweren.A disadvantage of the known respirator mask is that the center of gravity of the respirator mask is positioned in front of it, due to the filters attached to the side, or the filter located in the center of the mask body, which considerably impairs the wearing comfort. In addition, the protruding filters interfere with the operation of devices. The two panes in the mask body limit the field of view to an area immediately in front of the eyes of the mask wearer and do not allow a view in the side area of the mask body. In addition, with the known respirator mask, inadequate adaptation of the panes to optical devices is possible, since the panes are firmly integrated into the mask body material. An angular offset between the panes and the lenses of the optical device can result in distortions or reflections which make the use of such devices more difficult.

Aus dem DE-GM 10 12 689 ist eine Gesichtsmaske mit vier in den Maskenkörper eingesetzten Augengläsern bekannt, von denen zwei im Bereich der Maskenkörpermitte und die anderen beiden Augengläser in den Seitenbereichen des Maskenkörpers angeordnet sind. Durch die segmentartige Aufteilung der Augengläser wird zwar der Sichtbereich gegenüber einer Anordnung mit nur zwei Gläsern vergrößert, allerdings ist der Wahrnehmungsbereich punktuell auf die Einzelsichtbereiche der Augengläser begrenzt, was den Gebrauch der Maske im Nahbereich beeinträchtigt.DE-GM 10 12 689 discloses a face mask with four eye glasses inserted into the mask body, two of which are arranged in the area of the center of the mask body and the other two eye glasses are arranged in the side areas of the mask body. The segmented division of the eye glasses increases the viewing area compared to an arrangement with only two glasses, but the area of perception is limited in places to the individual viewing areas of the eye glasses, which impairs the use of the mask in the close range.

Der Erfindung liegt die Aufgabe zugrunde, eine Atemschutzmaske der genannten Art derart zu verbessern, daß die Trageeigenschaften bei aufgesetztem Filter hinsichtlich der Schwerpunktlage verbessert werden, ein größeres Sichtfeld vorhanden ist und gute Adaptierbarkeit an optische Geräte besteht.The invention has for its object to improve a respirator of the type mentioned in such a way that the wearing properties when the filter is attached are improved with respect to the center of gravity, a larger field of vision is available and there is good adaptability to optical devices.

Die Lösung der Aufgabe erfolgt mit den Merkmalen des Patentanspruchs 1.The problem is solved with the features of claim 1.

Der Vorteil der Erfindung besteht im wesentlichen darin, daß durch die Ausbildung des Filters als U-förmiges, den Maskenkörper von der Maskenkörpermitte bis in den Wangenbereich hin umgreifendes Filterelement, der Schwerpunkt zum Maskenträger verlagert, und außerdem der Totraum im Wangenbereich der Atemschutzmaske besonders gut ausgenutzt wird, was die Gebrauchstauglichkeit der Atemschutzmaske deutlich erhöht. Durch die Anordnung eines rechteckförmigen, durchsichtigen Elastomerabschnittes im Sichtbereich des Maskenkörpers, in welchen einzelne Sichtscheiben eingesetzt sind, wird das Sichtfeld deutlich erhöht, da jetzt auch außerhalb der Sichtscheiben eine visuelle Wahrnehmbarkeit der Umgebung besteht. Die Sichtscheiben sind aus festem, optischem Material mit guten Transmissionseigenschaften gefertigt. Durch die Befestigung der Sichtscheiben innerhalb des nachgiebigen Elastomerabschnittes wird eine besonders gute Adaptierbarkeit an optische Geräte erreicht, da die Sichtscheiben gegeneinander gekippt oder auch verschoben werden können.The advantage of the invention consists essentially in the fact that, by designing the filter as a U-shaped filter element encompassing the mask body from the center of the mask body to the cheek area, the center of gravity is shifted to the mask wearer and the dead space in the cheek area of the respirator mask is particularly well utilized becomes, which significantly increases the usability of the respirator. The arrangement of a rectangular, transparent elastomer section in the viewing area of the mask body, in which individual viewing panes are used, significantly increases the field of vision, since the surroundings are now also visually perceptible outside the viewing panes. The lenses are made of solid, optical material with good transmission properties. By attaching the viewing panes within the flexible elastomer section, particularly good adaptability to optical devices is achieved, since the viewing panes can be tilted against one another or also moved.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

In vorteilhafter Weise ist der Maskenkörper im Bereich des Filterelementes als eine korrespondierend zur Innenfläche des Filterelementes geformte Filteraufnahme ausgeführt, und bei auf den Maskenkörper geschobenenem Filterelement liegt die Innenfläche des Filters bündig an der Filteraufnahme an. Der Filteranschluß des Filterelementes ist zweckmäßigerweise in der Maskenkörpermitte angeordnet. Der Filteranschluß kann als Steck-, Schraub- oder Bajonettanschluß ausgeführt sein, wobei der Steckanschluß die bevorzugte Ausführungsform darstellt.In an advantageous manner, the mask body in the area of the filter element is designed as a filter receptacle shaped corresponding to the inner surface of the filter element, and when the filter element is pushed onto the mask body, the inner surface of the filter lies flush against the filter receptacle. The filter connection of the filter element is expediently arranged in the center of the mask body. The filter connection can be designed as a plug, screw or bayonet connection, the plug connection being the preferred embodiment.

In vorteilhafter Weise sind die Sichtscheiben als zur Maskenkörpermitte hin sich verjüngende, z.B. dreieckförmige erste Sichtscheiben, die im Hauptsichtbereich des Maskenträgers liegen, und als nach hinten rund auslaufende, z.B. halbkreisförmige zweite Sichtscheiben ausgeführt, welche im Seitenbereich des Maskenkörpers angeordnet sind. Als Sichtscheiben können ebene oder sphärisch gekrümmte Gläser verwendet werden. Durch die Befestigung der Sichtscheiben innerhalb des nachgiebigen Elastomerabschnittes sind diese gegeneinander verschiebbar und kippbar und können dadurch besonders gut an optische Geräte adaptiert werden. Durch die Flexibilität des Elastomerabschnittes ist es auch möglich, die Sichtscheiben, z.B. beim Anlegen eines optischen Gerätes, näher zum Gesicht, d.h. zu den Augen des Maskenträgers, hin zu führen. Die Sichtscheiben können in den Elastomerabschnitt eingeformt oder eingeklebt sein. Der Elastomerabschnitt ist aus einem durchsichtigen, thermoplastischen Elastomer (TPE) gefertigt.Advantageously, the lenses are tapered towards the center of the mask body, e.g. triangular first viewing panes, which are located in the main viewing area of the mask wearer, and as round tapering to the rear, e.g. semicircular second lenses, which are arranged in the side region of the mask body. Flat or spherically curved glasses can be used as viewing panes. By fastening the viewing panes within the flexible elastomer section, they can be displaced and tilted relative to one another and can therefore be adapted particularly well to optical devices. Due to the flexibility of the elastomer section, it is also possible to use the viewing panes, e.g. when putting on an optical device, closer to the face, i.e. to the eyes of the mask wearer. The viewing windows can be molded or glued into the elastomer section. The elastomer section is made from a clear, thermoplastic elastomer (TPE).

In zweckmäßiger Weise ist in der Maskenkörpermitte oberhalb des Filterelementes eine Halterung zur Aufnahme einer Sprechmembran angebracht. Die Sprechmembran befindet sich etwa im Mundbereich des Maskenträgers. Auf diese Weise ist eine besonders gute Verständigung möglich.A holder for receiving a speech membrane is expediently attached in the middle of the mask body above the filter element. The speech membrane is located approximately in the mouth area of the mask wearer. In this way, particularly good communication is possible.

Das Ausatemventil ist in zweckmäßiger Weise an der tiefsten Stelle des Maskenkörpers, d.h. unterhalb des Filterelementes im Kinnbereich angebracht. So kann eventuell innerhalb des Maskenkörpers befindliches Kondenswasser direkt in die Umgebung abfließen.The exhalation valve is conveniently located at the deepest point of the mask body, i.e. attached below the filter element in the chin area. Any condensation water inside the mask body can flow directly into the environment.

Am Maskenkörper sind insgesamt sechs Befestigungspunkte zur Anbringung einer Kopfbänderung vorgesehen, wobei sich zwei der Befestigungspunkte am Maskenkörper in Höhe des Filterelementes befinden, um die Atemschutzmaske im Bereich des Schwerpunktes zu unterstützen. Auf diese Weise werden besonders angenehme Trageeigenschaften der Atemschutzmaske erreicht. Die in Höhe des Filterelementes befindlichen Befestigungspunkte können auch unmittelbar am Filterelement angebracht sein, oder es befinden sich Befestigungspunkte sowohl am Maskenkörper als auch am Filterelement. Durch die Einbeziehung des Filterelementes in die Befestigung der Kopfbänderung wird die Abstützung der Atemschutzmaske im Schwerpunktbereich weiter verbessert.A total of six attachment points are provided on the mask body for attaching a head strap, with two of the attachment points on the mask body being at the level of the filter element in order to support the respirator mask in the area of the center of gravity. In this way, particularly pleasant wearing properties of the respiratory mask are achieved. The fastening points located at the level of the filter element can also be attached directly to the filter element, or there are fastening points both on the mask body and on the filter element. The inclusion of the filter element in the attachment of the headgear further improves the support of the breathing mask in the area of focus.

In vorteilhafter Weise ist das Filterelement so ausgeführt, daß die Gaseintrittsöffnungen an den Enden der Seitenteile, d.h. an den Schenkelenden des U-förmig ausgeführten Filterelementes liegen. Der Gasfluß erfolgt dann symmetrisch von den beiden gegenüberliegenden Gaseintrittsöffnungen zum mittig angeordneten Filteranschluß. Das Filterelement enthält einzelne Sorptionsschichten, z.B. aus Aktivkohle, zur Adsorption von Schadgasen. Eine zweckmäßige Reihenfolge der Luftreinigungsschichten innerhalb des Filterelementes ist ein Vlieskörper als Partikelabscheider und eine oder mehrere Aktivkohlepatronen zur Schadgasadsorption.Advantageously, the filter element is designed so that the gas inlet openings at the ends of the side parts, i.e. lie on the leg ends of the U-shaped filter element. The gas flow then takes place symmetrically from the two opposite gas inlet openings to the centrally arranged filter connection. The filter element contains individual sorption layers, e.g. made of activated carbon, for the adsorption of harmful gases. A useful sequence of the air cleaning layers within the filter element is a nonwoven body as a particle separator and one or more activated carbon cartridges for the harmful gas adsorption.

In vorteilhafter Weise ist das Filterelement als ein Kassettenfilter mit einem öffenbaren Filtergehäuse ausgeführt, in welches einzelne Luftreinigungsschichten einlegbar oder nach Gebrauch auch aus diesem herausnehmbar sind. Auf diese Weise wird die Aufbereitung des Kassettenfilters wesentlich vereinfacht, da das Filtergehäuse mehrfach verwendet werden kann und nur die Luftreinigungsschichten ersetzt werden müssen. Die verbrauchten Sorptionsschichten können so unmittelbar einer Wiederaufbereitung zugeführt werden.The filter element is advantageously designed as a cassette filter with an openable filter housing, into which individual air cleaning layers can be inserted or can also be removed therefrom after use. In this way, the preparation of the cassette filter is considerably simplified since the filter housing can be used several times and only the air cleaning layers are replaced have to. The used sorption layers can thus be immediately reprocessed.

Ein Ausführungsbeispiel der Erfindung ist in der Figur dargestellt und im folgenden näher erläutert.An embodiment of the invention is shown in the figure and explained in more detail below.

Es zeigen:

Figur 1
eine perspektivische Ansicht einer Atemschutzmaske mit abgenommenem Kassettenfilter,
Figur 2
die Atemschutzmaske nach der Figur 1 mit aufgesetztem Kassettenfilter.
Show it:
Figure 1
1 shows a perspective view of a respiratory mask with the cassette filter removed,
Figure 2
the breathing mask of Figure 1 with a cassette filter attached.

Figur 1 zeigt eine Atemschutzmaske 1 mit einem als Vollmaske ausgebildeten Maskenkörper 2, welcher aus einem thermoplastischen Elastomer (TPE) gefertigt und gleichzeitig als Dichtrand zum Gesicht eines in der Figur 1 nicht dargestellten Maskenträgers ausgebildet ist. Der Maskenkörper 2 ist symmetrisch zur Maskenkörpermitte 3, als Symmetrieachse der Atemschutzmaske 1, ausgeführt. Im Sichtbereich des Maskenkörpers 2 ist ein rechteckförmiger Ausschnitt vorgesehen, der mit einem korrespondierend dazu ausgeführten, rechteckförmigen, nachgiebigen und durchsichtigen Elastomerabschnitt 4 verschlossen ist. Der Elastomerabschnitt 4 besteht ebenfalls aus einem TPE. In den Elastomerabschnitt 4, welcher in der Figur 1 durch eine Schraffur hervorgehoben ist, sind zwei dreieckförmige, sich zur Maskenkörpermitte 3 hin verjüngende, erste Sichtscheiben 5 und halbkreisförmige zweite Sichtscheiben 6 eingesetzt, die von der Maskenkörpermitte 3 aus gesehen hinter den ersten Sichtscheiben 5 im Seitenbereich des Maskenkörpers 2 liegen. Die ersten Sichtscheiben 5 bilden zueinander einen Winkel von etwa 170 Grad und die zweiten Sichtscheiben 6 sind gegenüber den jeweils benachbart liegenden ersten Sichtscheiben 5 um etwa 120 Grad abgewinkelt. Auf diese Weise wird erreicht, daß sowohl im Frontbereich als auch im Seitenbereich des Maskenkörpers 2 die Sichtscheiben 5, 6 nur Maskenkörpers 2 die Sichtscheiben 5, 6 nur einen geringen Winkelversatz gegenüber der Sehachse des Maskenträgers haben.FIG. 1 shows a breathing mask 1 with a mask body 2 designed as a full mask, which is made of a thermoplastic elastomer (TPE) and at the same time is designed as a sealing edge to the face of a mask wearer (not shown in FIG. 1). The mask body 2 is designed symmetrically with respect to the center of the mask body 3, as the axis of symmetry of the respirator mask 1. In the visible area of the mask body 2, a rectangular cutout is provided, which is closed with a correspondingly designed, rectangular, flexible and transparent elastomer section 4. The elastomer section 4 also consists of a TPE. In the elastomer section 4, which is highlighted by a hatching in FIG. 1, two triangular first viewing panes 5 tapering towards the center of the mask body 3 and semicircular second viewing panes 6 are inserted, which are seen from the center of the mask body 3 behind the first viewing panes 5 in Side area of the mask body 2 lie. The first viewing panes 5 form an angle to one another of approximately 170 degrees and the second viewing panes 6 are angled by approximately 120 degrees with respect to the respectively adjacent first viewing panes 5. In this way it is achieved that both in the front area and in the side area of the mask body 2, the viewing windows 5, 6 only Mask body 2, the lenses 5, 6 have only a slight angular offset with respect to the visual axis of the mask wearer.

Der untere Teil des Maskenkörpers 2 ist von der Maskenkörpermitte 3 bis hin zum Wangenbereich 7 als eine U-förmige Filteraufnahme 8 mit einem Atemanschluß 9 ausgeführt. Oberhalb des Atemanschlusses 9 befindet sich einen Halterung 10 für eine in der Figur 1 nicht dargestellte Sprechmembran und unterhalb des Atemanschlusses 9 ist ein Ausatemventil 11 angeordnet.The lower part of the mask body 2 is designed as a U-shaped filter receptacle 8 with a breath connection 9 from the center of the mask body 3 to the cheek region 7. Above the breathing connection 9 there is a holder 10 for a speech membrane, not shown in FIG. 1, and below the breathing connection 9 there is an exhalation valve 11.

Ein U-förmig gekrümmtes Kassettenfilter 12 als Filterelement mit einem Filteranschluß 13 besitzt eine Innenfläche 14, die korrespondierend zur Filteraufnahme 8 geformt ist. Auf diese Weise ist das Kassettenfilter 12 paßgenau auf die Filteraufnahme 8 aufschiebbar. Beim Aufschieben des Kassettenfilters 12 auf die Filteraufnahme 8 längs des Pfeils 19 greift der Filteranschluß 13 in den Atemanschluß 9 ein.A U-shaped curved cassette filter 12 as a filter element with a filter connection 13 has an inner surface 14 which is shaped corresponding to the filter receptacle 8. In this way, the cassette filter 12 can be pushed onto the filter holder 8 with a precise fit. When the cassette filter 12 is pushed onto the filter receptacle 8 along the arrow 19, the filter connection 13 engages in the breathing connection 9.

Das Kassettenfilter 12 besitzt an seinen Seitenteilen 15, 16 Gaseintrittsöffnungen 17, 18, wobei der Gasfluß symmetrisch von den Gaseintrittsöffnungen 17, 18 zum Filteranschluß 13 erfolgt. Die Figur 1 zeigt die Atemschutzmaske 1 mit abgenommenem Kassettenfilter 12. In der Figur 2 ist demgegenüber die Atemschutzmaske 1 mit aufgesetztem Kassettenfilter 12 gezeigt. Gleiche Komponenten der Figur 2 sind mit gleichen Bezugsziffern der Figur 1 bezeichnet.The cassette filter 12 has gas inlet openings 17, 18 on its side parts 15, 16, the gas flow taking place symmetrically from the gas inlet openings 17, 18 to the filter connection 13. FIG. 1 shows the respiratory protection mask 1 with the cassette filter 12 removed. In contrast, FIG. 2 shows the respiratory protection mask 1 with the cassette filter 12 attached. Identical components in FIG. 2 are identified by the same reference numerals in FIG. 1.

Am Maskenkörper 2 sind sechs Befestigungspunkte 20, 21, 22, 23, 24, 25 für eine Kopfbänderung 26 vorgesehen, wobei zwei der Befestigungspunkte 22, 24 am Maskenkörper 2 in Höhe der Fiteraufnahme 8 angebracht sind, um den Maskenkörper 2 im Bereich seines Schwerpunktes abzustützen. Die Kopfbänderung 26 ist aus einzelnen, biaxial streckbaren Gewebestücken zusammengenäht. In den Figuren 1 und 2 ist der entspannte Zustand der Kopfbänderung 26 veranschaulicht. Aufgrund der konkaven Form der Kopfbänderung 26 im entspannten Zustand ergibt sich ein besonders guter Paßsitz am Kopf des in den Figuren 1 und 2 nicht dargestellen Maskenträgers.Six attachment points 20, 21, 22, 23, 24, 25 are provided on the mask body 2 for a head harness 26, two of the attachment points 22, 24 being attached to the mask body 2 at the level of the filter holder 8 in order to support the mask body 2 in the region of its center of gravity . The head strap 26 is sewn together from individual, biaxially stretchable pieces of fabric. The relaxed state of the head strap 26 is illustrated in FIGS. 1 and 2. Due to the concave shape of the head strap 26 in the relaxed state, there is a particularly good fit on the head of the mask wearer, not shown in FIGS. 1 and 2.

Claims (11)

Atemschutzmaske mit einem als Vollmaske ausgebildeten Maskenkörper (2) mit einem Sichtfeld und einem in Maskenkörpermitte (3) oder seitlich davon im Wangenbereich (7) anbringbaren Filter (12) mit einem Filteranschluß (13), dadurch gekennzeichnet, daß das Filter als sich U-förmig von der Maskenkörpermitte (3) bis zum Wangenbereich (7) hin erstreckendes Filterelement (12) ausgeführt ist, und das Sichtfeld aus einem durchsichtigen, nachgiebigen Elastomerabschnitt (4) besteht, in welchen einzelne, segmentartige Sichtscheiben (5, 6) aus festem Material eingesetzt sind.Respiratory protection mask with a mask body (2) designed as a full mask with a field of view and a filter (12) which can be attached in the center of the mask body (3) or laterally in the cheek region (7) and has a filter connection (13), characterized in that the filter as a U- filter element (12) extending from the center of the mask body (3) to the cheek region (7), and the field of vision consists of a transparent, resilient elastomer section (4) in which individual, segment-like lenses (5, 6) made of solid material are used. Atemschutzmaske nach Anspruch 1, dadurch gekennzeichnet, daß der Maskenkörper (2) im Bereich des Filterelementes (12) als korrespondierend zumindestens zur Innenfläche (14) des Filterelementes (12) geformte Filteraufnahme (8) ausgebildet ist, auf welche das Filterelement (12) aufschiebbar ist.Respiratory protection mask according to claim 1, characterized in that the mask body (2) in the region of the filter element (12) is designed as a filter receptacle (8) shaped at least to the inner surface (14) of the filter element (12), onto which the filter element (12) can be pushed is. Atemschutzmaske nach Anspruch 2 dadurch gekennzeichnet, daß an der Filteraufnahme (8) im Bereich der Maskenkörpermitte (3) ein Atemanschluß (9) für den Filteranschluß (13) vorgesehen ist.Respiratory mask according to claim 2, characterized in that a breath connection (9) for the filter connection (13) is provided on the filter receptacle (8) in the region of the center of the mask body (3). Atemschutzmaske nach Anspruch 3, dadurch gekennzeichnet, daß der Atemanschluß (9) und der Filteranschluß (13) als Steck-, Schraub- oder Bajonettanschluß ausgeführt sind.Respiratory protection mask according to claim 3, characterized in that the breath connection (9) and the filter connection (13) are designed as plug-in, screw or bayonet connections. Atemschutzmaske nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Sichtscheiben als zur Maskenkörpermitte (3) hin sich verjüngende, dreieckförmige erste Sichtscheiben (5) und als nach hinten rund auslaufende zweite Sichtscheiben (6) im Seitenbereich des Maskenkörpers (2) ausgeführt sind.Respirator mask according to one of claims 1 to 4, characterized in that the viewing panes are designed as triangular first viewing panes (5) tapering towards the center of the mask body (3) and as second viewing panes (6) tapering to the rear in the side region of the mask body (2) are. Atemschutzmaske nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß am Maskenkörper (2) oberhalb des Filterelementes (12) eine Halterung (10) für eine Sprechmembran vorgesehen ist.Respiratory mask according to one of claims 1 to 5, characterized in that a holder (10) for a speech membrane is provided on the mask body (2) above the filter element (12). Atemschutzmaske nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß am Maskenköper (2) unterhalb des Filterelementes (12) ein Ausatemventil (11) vorhanden ist.Respiratory mask according to one of claims 1 to 6, characterized in that an exhalation valve (11) is provided on the mask body (2) below the filter element (12). Atemschutzmaske nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß am Maskenkörper (2) Befestigungspunkte (20, 21, 22, 23, 24, 25) zur Anbringung einer mehrarmigen Kopfbänderung (26) vorgesehen sind, und daß zwei der Befestigungspunkte (22, 24) in Höhe des Filterelementes (12) am Maskenkörper (2) angebracht sind.Respiratory protection mask according to one of claims 1 to 7, characterized in that fastening points (20, 21, 22, 23, 24, 25) are provided on the mask body (2) for attaching a multi-armed head strap (26), and in that two of the fastening points (22 , 24) are attached to the mask body (2) at the level of the filter element (12). Atemschutzmaske nach Anspruch 8, dadurch gekennzeichnet, daß die Befestigungspunkte (22, 24) Bestandteile des Filterelementes (12) sind.Respiratory protection mask according to claim 8, characterized in that the fastening points (22, 24) are components of the filter element (12). Atemschutzmaske nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß an den im Wangenbereich (7) liegenden Seitenteilen (15, 16) des Filterelementes (12) Gaseintrittsöffnungen (17, 18) vorgesehen sind.Respiratory protection mask according to one of claims 1 to 9, characterized in that gas inlet openings (17, 18) are provided on the side parts (15, 16) of the filter element (12) lying in the cheek region (7). Atemschutzmaske nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das Filterelement als ein Kassettenfilter (12) mit einem öffenbaren Filtergehäuse ausgeführt ist, in welches Luftreinigungsschichten einlegbar sind.Respiratory protection mask according to one of claims 1 to 10, characterized in that the filter element is designed as a cassette filter (12) with an openable filter housing, in which air-cleaning layers can be inserted.
EP96113718A 1995-09-21 1996-08-28 Respiratory mask Expired - Lifetime EP0764452B1 (en)

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DE19534985A DE19534985C2 (en) 1995-09-21 1995-09-21 Respirator
DE19534985 1995-09-21

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EP0764452A2 true EP0764452A2 (en) 1997-03-26
EP0764452A3 EP0764452A3 (en) 1998-03-18
EP0764452B1 EP0764452B1 (en) 2001-11-14

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US (1) US5669375A (en)
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CA (1) CA2184330C (en)
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DE (2) DE19534985C2 (en)

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CN109077378A (en) * 2018-08-17 2018-12-25 张锡林 A kind of industrial face guard mask
WO2021219166A1 (en) * 2020-04-27 2021-11-04 Fritz Schmitt Respirator mask having a filter

Also Published As

Publication number Publication date
EP0764452A3 (en) 1998-03-18
DE59608189D1 (en) 2001-12-20
CA2184330C (en) 2002-11-19
CZ273396A3 (en) 1997-04-16
EP0764452B1 (en) 2001-11-14
DE19534985C2 (en) 1998-02-12
DE19534985A1 (en) 1997-03-27
US5669375A (en) 1997-09-23
CZ289527B6 (en) 2002-02-13
CA2184330A1 (en) 1997-03-22

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