EP0543174A1 - Half mask - Google Patents

Half mask Download PDF

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Publication number
EP0543174A1
EP0543174A1 EP92118143A EP92118143A EP0543174A1 EP 0543174 A1 EP0543174 A1 EP 0543174A1 EP 92118143 A EP92118143 A EP 92118143A EP 92118143 A EP92118143 A EP 92118143A EP 0543174 A1 EP0543174 A1 EP 0543174A1
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EP
European Patent Office
Prior art keywords
half mask
filter holder
mask body
filter
sealing edge
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
EP92118143A
Other languages
German (de)
French (fr)
Other versions
EP0543174B1 (en
Inventor
Joachim Schlobohm
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
Publication of EP0543174A1 publication Critical patent/EP0543174A1/en
Application granted granted Critical
Publication of EP0543174B1 publication Critical patent/EP0543174B1/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
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A62B18/025—Halfmasks

Definitions

  • the invention relates to a half mask with a connection opening for a filter, with a resilient half mask body with a sealing edge and a fixed filter holder encompassing the half mask body with a band.
  • a half mask of the type mentioned has become known from DE-C1 40 17 336.
  • the known half mask has a half mask body with a sealing edge, which is inserted into a filter holder.
  • a filter is attached to the filter holder in the mouth area.
  • the filter holder extends from the mouth area to the cheek area of the half-mask body and lies freely on the half-mask body. Inhalation takes place via an inhalation valve, and exhalation runs via an exhalation valve which is buttoned into the half-mask body in the chin area.
  • a strap is attached in an eyelet of the filter holder, with which the half mask can be attached to the head of a device carrier.
  • the tightness between the mouth and the environment is determined by the geometry and the rigidity of the sealing edge, the flexibility of the half mask body and the lateral support of the half mask body by the filter holder.
  • a soft mask body or soft sealing edge increases the wearing comfort, but worsens the mechanical stability, while a high rigidity of the mask body or the sealing edge is perceived as unpleasant when the half mask is worn.
  • the filter holder in the cheek region on the half mask body only brings about a certain lateral stabilization of the half mask body, while there is no direct interaction between the filter holder and the sealing edge which is decisive for the tightness of the half mask.
  • a half mask known from GB-PS 761 263 consists of a flexible half mask body, in which a filter holder with a filter is inserted in the mouth area.
  • a wire helix is vulcanized into the mask body in order to give the sealing edge a corresponding stiffness.
  • the wire helix can be roughly adapted to the face contour of the mask wearer.
  • the known half mask is given increased rigidity in the area of the sealing edge by the wire helix, however, the half mask can only be worn by a specific mask carrier because of the individually curved wire helix. This complicates handling in practical use, since the individual preformed half-masks would have to be individually returned to the mask wearer after device reprocessing.
  • the invention has for its object to improve a half mask in such a way that, in addition to good wearing comfort, it also has a high level of tightness with different face shapes.
  • the half-mask body has an at least piece-wise circumferential support means which, with the end faces of the filter holder facing the sealing edge attached half mask is brought into engagement by the banding in a manner that supports the sealing edge.
  • the advantage of the invention consists essentially in the fact that the half mask body is stiffened in the area of the sealing edge in that an at least piece-wise circumferential support means on the mask body is brought into engagement with the end faces of the fixed filter holder when the half mask is attached by the tension of the straps, and the Sealing edge or the half-mask body can therefore be made from a particularly flexible material, for example a pliable elastomer, since the lateral support is provided by the filter holder resting on the support means.
  • the defined attachment of a proppant to the half-mask body makes it possible to adapt the rigidity of the sealing edge to the respective area of the half-mask body.
  • the rigidity can be influenced, for example, by changing the distance of the support means to the sealing edge, or by a certain geometry of the support means in cooperation with the end face of the filter holder.
  • adhesive layers can expediently also be present, by means of which the sealing edge of the half-mask body is additionally fixed in the filter holder, for example if the tension of the straps is not yet fully effective when the half mask is put on.
  • Special embodiments of the filter holder are a first filter holder for a filter with a screw thread and a second filter holder for a respiratory protection filter with a round thread. The differences between the two embodiments relate only to the special one Connection of the respective filter types.
  • the filters are directly attached to the connection opening of the filter holder.
  • the support means is advantageously designed as a first shoulder in the cheek region of the half mask body.
  • the first shoulder can be designed as an oblique, funnel-shaped surface in the transition area between the sealing edge and the half-mask body and the filter holder is designed in the area of the first shoulder as a first end face corresponding to the latter.
  • the support means in the nose area is a second, circumferential shoulder, which is bulge-shaped and directly abuts a second end face of the filter holder.
  • a bellows-shaped deformation zone can additionally be attached, in order to adapt the half-mask body to the nose region of the mask wearer.
  • the support means in the chin region is advantageously designed as a support lip facing the filter holder, which is supported against a third end face of the filter holder.
  • the support lip essentially supports the half mask body in the chin area in the radial direction.
  • the filter holder is expediently designed such that it is in the nose area on the second paragraph abuts and integrally encompasses both the cheek area and the chin area of the half-mask body.
  • the filter holder is thus an outer, stabilizing and supporting shell for the limp half-mask body.
  • the filter holder is essentially cylindrical and can therefore be manufactured particularly inexpensively as a molded part.
  • the conical half-mask body thus has enough free space within the filter holder and its deformation is not hindered by the wall of the filter holder.
  • the half-mask body expediently has an inhalation valve which can be buttoned into the connection opening of the filter holder. In this way, simple assembly and disassembly of the half mask body is possible without tools.
  • the buttoned valve housing surface of the inhalation valve is also a sealing surface for the round thread. In this way, a separate sealing ring is saved because the round thread of the respiratory protection filter is sealed directly with the valve housing surface of the inhalation valve.
  • the exhalation valve is expediently attached to the chin area of the half mask body. Since the exhalation valve is covered by the cylindrical filter holder in the assembled state, exhalation openings are provided in the filter holder below the exhalation valve.
  • the filter holder also serves as a shock protection for the exhalation valve in this area.
  • the first half mask (1) shown in FIG. 1 consists of a half mask body (2) with a circumferential sealing edge (3), an inhalation valve (4) and an exhalation valve (5).
  • the inside of the half-mask body (2) can be divided into a nose area (6), a cheek area (7) and a chin area (8).
  • a nose area (6) there is a bellows-like deformation zone (9) for better adaptability of the nose area (6) to the face contour of the mask wearer.
  • the half-mask body (2) is enclosed in a capsule-like manner by a cylindrical first filter holder (10) made of solid material, in which a filter (12) is fastened with a cover (11).
  • the filter (12) is sealed with a sealing ring (122) within the first filter holder (10).
  • the first filter holder (10) has a connection opening (13) into which the inhalation valve (4) of the half-mask body (2) is buttoned.
  • the Half mask (1) is cut along the cutting line (24), whereby the inhalation valve (4), the exhalation valve (5) and the filter (12) become visible.
  • the filter (12) is designed as a so-called screw filter and is rotated against the sealing ring (122) when it is inserted into the first filter holder (10). Inhalation takes place through openings (not shown in the figure) in the cover (11), the filter (12) and the inhalation valve (4), while the exhalation takes place via the exhalation valve (5) and exhalation openings (14) in the first filter holder (10) becomes.
  • a strap (16) is fastened in an eyelet (15) of the first filter holder (10).
  • a corresponding eyelet is located on the opposite side of the first filter holder (10) and is not shown in FIG. 1.
  • the first filter holder (10), together with the half-mask body (2) and the filter (12), is fastened to the face of a mask carrier (not shown in FIG. Since the filter (12) is attached directly to the first filter holder (10), the inherent weight of the filter (12) is transferred to the face of the mask wearer via the sealing edge (3) and no bending moments act on the half-mask body (2).
  • a first shoulder (17) in the form of an oblique, funnel-shaped surface is provided in the half-mask body (2) in the cheek area (7), which is arranged on a correspondingly designed first end face (18) of the filter holder is present.
  • the inclined surface is generated in that the first end face (18) is angled slightly outwards.
  • a corresponding first paragraph (17) and a first end face (18) are on the opposite side the half mask (1) attached, but not shown in Figure 1.
  • a second shoulder (19) is provided in the nose area (6) as a support means, against which a second end face (20) of the first filter holder (10) abuts.
  • the support means in the chin area (8) of the half mask body (2) is a support lip (21) which bears on a third end face (22) of the first filter holder (10).
  • the half-mask body (2) is designed as a flexible elastomer and is connected to the first filter holder (10) in such a way that the inhalation valve (4) is buttoned into the connection opening (13) of the first filter holder (10).
  • the first shoulder (17) comes to rest on the first end face (18), the second shoulder (19) on the second end face (20) and the support lip (21) on the third end face (22).
  • the sealing edge (3) is given the necessary stability to fit the face of the mask wearer, not shown in the figure.
  • the use of a flexible elastomer for the half mask body (2) or the sealing edge (3) results in a high level of comfort.
  • Figure 2 shows the half mask (1) according to Figure 1 in vertical section. Identical components are identified by the same reference numerals in FIG. 1.
  • FIG. 3 shows a second half mask (30) with a respiratory protection filter (31) for round thread connection and a second filter holder (33). Same Components are identified by the same reference numbers in FIGS. 1 and 2.
  • the round thread (32) is sealed off from the second filter holder (33) via the valve housing surface (23) of the inhalation valve (4) buttoned into the connection opening (13).
  • a separate sealing ring (122), FIG. 1 is not required for the second half mask (30).
  • the second filter holder (33) differs from the first filter holder (10) in that a threaded connector (34) is provided for receiving the round thread (32).

Abstract

A half mask (1) having a connecting opening (13) for a filter (12), a resilient half mask body (2) with a sealing edge (3) and a rigid filter mounting (10) gripping round the half mask body and having a belt system (16) is to be improved as regards wearing comfort and tightness. This object is achieved in that the half mask body (2) comprises a support means (17, 19, 21) which extends at least over part of the circumference and is brought by the belt system (16) in engagement with the front sides (18, 20, 22) of the filter holder (10) pointing toward the sealing edge (3) when the half mask (1) is put on, in a manner supporting the sealing edge (3). <IMAGE>

Description

Die Erfindung betrifft eine Halbmaske mit einer Anschlußöffnung für ein Filter, mit einem nachgiebigen Halbmaskenkörper mit Dichtrand und einer festen, den Halbmaskenkörper umgreifenden Filterhalterung mit einer Bänderung.The invention relates to a half mask with a connection opening for a filter, with a resilient half mask body with a sealing edge and a fixed filter holder encompassing the half mask body with a band.

Eine Halbmaske der genannten Art ist aus der DE-C1 40 17 336 bekanntgeworden. Die bekannte Halbmaske besitzt einen Halbmaskenkörper mit Dichtrand, welcher in eine Filterhalterung eingesetzt ist. Im Mundbereich ist ein Filter an der Filterhalterung befestigt. Die Filterhalterung erstreckt sich vom Mundbereich bis zum Wangenbereich des Halbmaskenkörpers und liegt frei auf dem Halbmaskenkörper auf. Die Einatmung erfolgt über ein Einatemventil, und die Ausatmung Läuft über ein Ausatemventil, welches im Kinnbereich in den Halbmaskenkörper eingeknöpft ist. In einer Öse der Filterhalterung ist eine Bänderung befestigt, mit der die Halbmaske an dem Kopf eines Geräteträgers befestigt werden kann.A half mask of the type mentioned has become known from DE-C1 40 17 336. The known half mask has a half mask body with a sealing edge, which is inserted into a filter holder. A filter is attached to the filter holder in the mouth area. The filter holder extends from the mouth area to the cheek area of the half-mask body and lies freely on the half-mask body. Inhalation takes place via an inhalation valve, and exhalation runs via an exhalation valve which is buttoned into the half-mask body in the chin area. A strap is attached in an eyelet of the filter holder, with which the half mask can be attached to the head of a device carrier.

Bei der bekannten Halbmaske wird die Dichtigkeit zwischen dem Mundraum und der Umgebung bestimmt durch die Geometrie und die Steifigkeit des Dichtrandes, die Nachgiebigkeit des Halbmaskenkörpers und die seitliche Abstützung des Halbmaskenkörpers durch die Filterhalterung. Ein weicher Maskenkörper bzw. weicher Dichtrand erhöht zwar den Tragekomfort, verschlechtert aber die mechanische Stabilität, während eine hohe Steifigkeit des Maskenkörpers bzw. des Dichtrandes beim Tragen der Halbmaske als unangenehm empfunden wird.In the known half mask, the tightness between the mouth and the environment is determined by the geometry and the rigidity of the sealing edge, the flexibility of the half mask body and the lateral support of the half mask body by the filter holder. A soft mask body or soft sealing edge increases the wearing comfort, but worsens the mechanical stability, while a high rigidity of the mask body or the sealing edge is perceived as unpleasant when the half mask is worn.

Die im Wangenbereich an dem Halbmaskenkörper anliegende Filterhalterung bewirkt nur eine gewisse seitliche Stabilisierung des Halbmaskenkörpers, während eine direkte Wechselwirkung zwischen der Filterhalterung und dem für die Dichtigkeit der Halbmaske maßgebenden Dichtrand nicht vorliegt.The filter holder in the cheek region on the half mask body only brings about a certain lateral stabilization of the half mask body, while there is no direct interaction between the filter holder and the sealing edge which is decisive for the tightness of the half mask.

Eine aus der GB-PS 761 263 bekannte Halbmaske besteht aus einem flexiblen Halbmaskenkörper, in welchen im Mundbereich eine Filterhalterung mit einem Filter eingesetzt ist. Im Bereich des Dichtrandes des Halbmaskenkörpers ist eine Drahtwendel in den Maskenkörper einvulkanisiert, um dem Dichtrand eine entsprechende Steifigkeit zu geben. Die Drahtwendel kann dabei grob an die Gesichtskontur des Maskenträgers angepaßt werden.A half mask known from GB-PS 761 263 consists of a flexible half mask body, in which a filter holder with a filter is inserted in the mouth area. In the area of the sealing edge of the half-mask body, a wire helix is vulcanized into the mask body in order to give the sealing edge a corresponding stiffness. The wire helix can be roughly adapted to the face contour of the mask wearer.

Die bekannte Halbmaske erhält zwar durch die Drahtwendel eine erhöhte Steifigkeit im Bereich des Dichtrandes, allerdings kann die Halbmaske wegen der individuell gebogenen Drahtwendel nur von einem bestimmten Maskenträger getragen werden. Dieses erschwert die Handhabung im praktischen Gebrauch, da nach einer Geräteaufbereitung die einzelnen vorgeformten Halbmasken wieder individuell an die Maskenträger ausgegeben werden müßten.Although the known half mask is given increased rigidity in the area of the sealing edge by the wire helix, however, the half mask can only be worn by a specific mask carrier because of the individually curved wire helix. This complicates handling in practical use, since the individual preformed half-masks would have to be individually returned to the mask wearer after device reprocessing.

Der Erfindung liegt die Aufgabe zugrunde, eine Halbmaske derart zu verbessern, daß sie neben gutem Tragekomfort auch eine hohe Dichtigkeit bei unterschiedlichen Gesichtsformen besitzt.The invention has for its object to improve a half mask in such a way that, in addition to good wearing comfort, it also has a high level of tightness with different face shapes.

Die Lösung der Aufgabe erfolgt dadurch, daß der Halbmaskenkörper ein mindestens stückweise umlaufendes Stützmittel aufweist, welches mit den zum Dichtrand weisenden Stirnseiten der Filterhalterung bei aufgesetzter Halbmaske durch die Bänderung in einer den Dichtrand abstützenden Weise in Eingriff gebracht ist.The object is achieved in that the half-mask body has an at least piece-wise circumferential support means which, with the end faces of the filter holder facing the sealing edge attached half mask is brought into engagement by the banding in a manner that supports the sealing edge.

Der Vorteil der Erfindung besteht im wesentlichen darin, daß der Halbmaskenkörper im Bereich des Dichtrandes eine Versteifung dadurch erfährt, daß ein mindestens stückweise umlaufendes Stützmittel am Maskenkörper mit den Stirnseiten der festen Filterhalterung bei aufgesetzter Halbmaske durch den Zug der Bänderung im Eingriff gebracht ist, und der Dichtrand bzw. der Halbmaskenkörper daher aus besonders flexiblem Material, z.B. einem biegeschlaffen Elastomer, gefertigt werden kann, da die seitliche Abstützung durch die am Stützmittel anliegende Filterhalterung erfolgt. Durch das definierte Anbringen eines Stützmittels am Halbmaskenkörper ist es möglich, die Steifigkeit des Dichtrandes dem jeweiligen Bereich des Halbmaskenkörpers anzupassen. Die Steifigkeit läßt sich beispielsweise durch Veränderung des Abstandes des Stützmittels zum Dichtrand, oder durch eine bestimmte Geometrie des Stützmittels im Zusammenwirken mit der Stirnseite der Filterhalterung beeinflussen. Zwischen einzelnen Stützmitteln und den dazugehörigen Stirnseiten der Filterhalterung können zweckmäßigerweise noch Haftschichten vorhanden sein, durch die der Dichtrand des Halbmaskenkörpers in der Filterhalterung zusätzlich fixiert wird, z.B. wenn beim Anlegen der Halbmaske der Zug der Bänderung noch nicht voll wirksam ist. Spezielle Ausführungsformen der Filterhalterung sind eine erste Filterhalterung für ein Filter mit Schraubgewinde und eine zweite Filterhalterung für ein Atemschutzfilter mit Rundgewinde. Die Unterschiede zwischen den beiden Ausführungsformen beziehen sich nur auf den speziellen Anschluß der jeweiligen Filtertypen. Die Filter sind an der Anschlußöffnung der Filterhalterung unmittelbar angebracht.The advantage of the invention consists essentially in the fact that the half mask body is stiffened in the area of the sealing edge in that an at least piece-wise circumferential support means on the mask body is brought into engagement with the end faces of the fixed filter holder when the half mask is attached by the tension of the straps, and the Sealing edge or the half-mask body can therefore be made from a particularly flexible material, for example a pliable elastomer, since the lateral support is provided by the filter holder resting on the support means. The defined attachment of a proppant to the half-mask body makes it possible to adapt the rigidity of the sealing edge to the respective area of the half-mask body. The rigidity can be influenced, for example, by changing the distance of the support means to the sealing edge, or by a certain geometry of the support means in cooperation with the end face of the filter holder. Between individual support means and the associated end faces of the filter holder, adhesive layers can expediently also be present, by means of which the sealing edge of the half-mask body is additionally fixed in the filter holder, for example if the tension of the straps is not yet fully effective when the half mask is put on. Special embodiments of the filter holder are a first filter holder for a filter with a screw thread and a second filter holder for a respiratory protection filter with a round thread. The differences between the two embodiments relate only to the special one Connection of the respective filter types. The filters are directly attached to the connection opening of the filter holder.

Vorteilhafterweise ist das Stützmittel im Wangenbereich des Halbmaskenkörpers als ein erster Absatz ausgeführt. Der erste Absatz kann als eine schräge, trichterförmige Fläche im Übergangsbereich zwischen dem Dichtrand und dem Halbmaskenkörper ausgeführt sein und die Filterhalterung ist im Bereich des ersten Absatzes als eine erste Stirnseite korrespondierend zu diesem ausgebildet. Beim Anlegen der Halbmaske an das Gesicht des Maskenträgers mit der Bänderung erfolgt die Abstützung des Dichtrandes durch die schräge Fläche des ersten Absatzes, indem die erste Stirnseite der Filterhalterung durch den Zug der Bänderung an dem ersten Absatz anliegt.The support means is advantageously designed as a first shoulder in the cheek region of the half mask body. The first shoulder can be designed as an oblique, funnel-shaped surface in the transition area between the sealing edge and the half-mask body and the filter holder is designed in the area of the first shoulder as a first end face corresponding to the latter. When the half mask is placed on the face of the mask wearer with the band, the sealing edge is supported by the oblique surface of the first paragraph, in that the first end face of the filter holder rests on the first paragraph by the tension of the band.

Es ist zweckmäßig, das Stützmittel im Nasenbereich als einen zweiten, umlaufenden Absatz auszuführen, der wulstförmig ausgeführt ist und unmittelbar gegen eine zweite Stirnseite der Filterhalterung stößt. Im Nasenbereich des Halbmaskenkörpers kann zusätzlich eine balgförmige Verformungszone angebracht sein, zur Anpassung des Halbmaskenkörpers an die Nasenregion des Maskenträgers.It is expedient to design the support means in the nose area as a second, circumferential shoulder, which is bulge-shaped and directly abuts a second end face of the filter holder. In the nose area of the half-mask body, a bellows-shaped deformation zone can additionally be attached, in order to adapt the half-mask body to the nose region of the mask wearer.

Vorteilhafterweise ist das Stützmittel im Kinnbereich als eine zur Filterhalterung weisende Stützlippe ausgeführt, welche sich gegen eine dritte Stirnseite der Filterhalterung abstützt. Die Stützlippe bewirkt im wesentlichen eine Abstützung des Halbmaskenkörpers im Kinnbereich in radialer Richtung.The support means in the chin region is advantageously designed as a support lip facing the filter holder, which is supported against a third end face of the filter holder. The support lip essentially supports the half mask body in the chin area in the radial direction.

Zweckmäßigerweise ist die Filterhalterung derart ausgeführt, daß sie im Nasenbereich am zweiten Absatz anliegt und einstückig sowohl den Wangenbereich als auch den Kinnbereich des Halbmaskenkörpers umgreift. Die Filterhalterung ist somit eine äußere, stabilisierende und stützende Schale für den biegeschlaffen Halbmaskenkörper.The filter holder is expediently designed such that it is in the nose area on the second paragraph abuts and integrally encompasses both the cheek area and the chin area of the half-mask body. The filter holder is thus an outer, stabilizing and supporting shell for the limp half-mask body.

Vorteilhafterweise ist die Filterhalterung im wesentlichen zylinderförmig ausgeführt und dadurch als Formteil besonders kostengünstig herstellbar. Der konisch verlaufende Halbmaskenkörper hat somit innerhalb der Filterhalterung genügend Freiraum und wird in seiner Verformung nicht durch die Wandung der Filterhalterung behindert.Advantageously, the filter holder is essentially cylindrical and can therefore be manufactured particularly inexpensively as a molded part. The conical half-mask body thus has enough free space within the filter holder and its deformation is not hindered by the wall of the filter holder.

Zweckmäßigerweise besitzt der Halbmaskenkörper ein Einatemventil, welches in die Anschlußöffnung der Filterhalterung einknöpfbar ist. Auf diese Weise ist eine einfache Montage und Demontage des Halbmaskenkörpers ohne Werkzeug möglich.The half-mask body expediently has an inhalation valve which can be buttoned into the connection opening of the filter holder. In this way, simple assembly and disassembly of the half mask body is possible without tools.

Bei einer zweiten Filterhalterung für ein Atemschutzfilter mit Rundgewindeanschluß ist die umgeknöpfte Ventil-Gehäusefläche des Einatemventils gleichzeitig Dichtfläche für das Rundgewinde. Auf diese Weise wird ein separater Dichtring eingespart, da das Rundgewinde des Atemschutzfilters unmittelbar mit der Ventil-Gehäusefläche des Einatemventils abgedichtet wird.In the case of a second filter holder for a respiratory protection filter with a round thread connection, the buttoned valve housing surface of the inhalation valve is also a sealing surface for the round thread. In this way, a separate sealing ring is saved because the round thread of the respiratory protection filter is sealed directly with the valve housing surface of the inhalation valve.

Das Ausatemventil ist zweckmäßigerweise am Kinnbereich des Halbmaskenkörpers angebracht. Da im montierten Zustand das Ausatemventil durch die zylindrische Filterhalterung abgedeckt ist, sind in der Filterhalterung unterhalb des Ausatemventils Ausatemöffnungen angebracht. Die Filterhalterung dient in diesem Bereich auch als Stoßschutz für das Ausatemventil.The exhalation valve is expediently attached to the chin area of the half mask body. Since the exhalation valve is covered by the cylindrical filter holder in the assembled state, exhalation openings are provided in the filter holder below the exhalation valve. The filter holder also serves as a shock protection for the exhalation valve in this area.

Ein Ausführungbeispiel 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:

Fig. 1
die Seitenansicht einer teilweise aufgeschnittenen ersten Halbmaske,
Fig. 2
die Seitenansicht der ersten Halbmaske im Vertikalschnitt,
Fig. 3
die Seitenansicht einer zweiten Halbmaske für ein Atemschutzfilter mit Rundgewindeanschluß im Vertikalschnitt.
Show it:
Fig. 1
the side view of a partially cut first half mask,
Fig. 2
the side view of the first half mask in vertical section,
Fig. 3
the side view of a second half mask for a respirator filter with round thread connection in vertical section.

Die in der Fig. 1 gezeigte erste Halbmaske (1) besteht aus einem Halbmaskenkörper (2) mit einem umlaufenden Dichtrand (3), einem Einatemventil (4) und einem Ausatemventil (5).
Das Innere des Halbmaskenkörpers (2) läßt sich unterteilen in einen Nasenbereich (6), einen Wangenbereich (7) und einen Kinnbereich (8). Im Nasenbereich (6) befindet sich eine balgartige Verformungszone (9), zur besseren Anpaßbarkeit des Nasenbereichs (6) an die Gesichtskontur des Maskenträgers. Der Halbmaskenkörper (2) ist kapselartig von einer zylindrischen ersten, aus festem Material gefertigten Filterhalterung (10) umschlossen, in welcher mit einem Deckel (11) ein Filter (12) befestigt ist. Innerhalb der ersten Filterhalterung (10) ist das Filter (12) mit einem Dichtring (122) abgedichtet. Die erste Filterhalterung (10) besitzt eine Anschlußöffnung (13), in welche das Einatemventil (4) des Halbmaskenkörpers (2) eingeknöpft ist. Die Halbmaske (1) ist längs der Schnittlinie (24) aufgeschnitten, wodurch das Einatemventil (4), das Ausatemventil (5) und das Filter (12) sichtbar werden. Das Filter (12) ist als ein sog. Schraubfilter ausgeführt und wird beim Einsetzen in die erste Filterhalterung (10) gegen den Dichtring (122) gedreht. Die Einatmung erfolgt durch in der Figur nicht dargestellten Durchbrüche im Deckel (11), das Filter (12) und das Einatemventil (4), während die Ausatmung über das Ausatemventil (5) und Ausatemöffnungen (14) in der ersten Filterhalterung (10) vorgenommen wird. In einer Öse (15) der ersten Filterhalterung (10) ist eine Bänderung (16) befestigt. Eine entsprechende Öse befindet sich auf der gegenüberliegenden Seite der ersten Filterhalterung (10), und ist in der Figur 1 nicht dargestellt. Mit der Bänderung (16) wird die erste Filterhalterung (10) zusammen mit dem Halbmaskenkörper (2) und dem Filter (12) am Gesicht eines in der Figur 1 nicht dargestellten Maskenträgers befestigt. Da das Filter (12) direkt an der ersten Filterhalterung (10) befestigt ist, wird die Eigengewichtskraft des Filters (12) über den Dichtrand (3) auf das Gesicht des Maskenträgers übertragen und es wirken keine Biegemomente auf den Halbmaskenkörper (2).The first half mask (1) shown in FIG. 1 consists of a half mask body (2) with a circumferential sealing edge (3), an inhalation valve (4) and an exhalation valve (5).
The inside of the half-mask body (2) can be divided into a nose area (6), a cheek area (7) and a chin area (8). In the nose area (6) there is a bellows-like deformation zone (9) for better adaptability of the nose area (6) to the face contour of the mask wearer. The half-mask body (2) is enclosed in a capsule-like manner by a cylindrical first filter holder (10) made of solid material, in which a filter (12) is fastened with a cover (11). The filter (12) is sealed with a sealing ring (122) within the first filter holder (10). The first filter holder (10) has a connection opening (13) into which the inhalation valve (4) of the half-mask body (2) is buttoned. The Half mask (1) is cut along the cutting line (24), whereby the inhalation valve (4), the exhalation valve (5) and the filter (12) become visible. The filter (12) is designed as a so-called screw filter and is rotated against the sealing ring (122) when it is inserted into the first filter holder (10). Inhalation takes place through openings (not shown in the figure) in the cover (11), the filter (12) and the inhalation valve (4), while the exhalation takes place via the exhalation valve (5) and exhalation openings (14) in the first filter holder (10) becomes. A strap (16) is fastened in an eyelet (15) of the first filter holder (10). A corresponding eyelet is located on the opposite side of the first filter holder (10) and is not shown in FIG. 1. The first filter holder (10), together with the half-mask body (2) and the filter (12), is fastened to the face of a mask carrier (not shown in FIG. Since the filter (12) is attached directly to the first filter holder (10), the inherent weight of the filter (12) is transferred to the face of the mask wearer via the sealing edge (3) and no bending moments act on the half-mask body (2).

Im Übergangsbereich zwischen Dichtrand (3) und Halbmaskenkörper (2) ist im Halbmaskenkörper (2) im Wangenbereich (7) ein erster Absatz (17) in Form einer schrägen, trichterförmigen Fläche vorgesehen, welche an einer korrespondierend ausgeführten ersten Stirnseite (18) der Filterhalterung anliegt. Die schräge Fläche wird dadurch erzeugt, daß die erste Stirnseite (18) leicht nach außen abgewinkelt ist. Ein entsprechender erster Absatz (17) und eine erste Stirnseite (18) sind auf der gegenüberliegenden Seite der Halbmaske (1) angebracht, in der Figur 1 jedoch nicht dargestellt. Durch den Zug der Bänderung (16) liegt bei aufgesetzter Halbmaske (1) der erste Absatz (17) an der ersten Stirnseite (18) an. Der erste Absatz (17) ist das Stützmittel des Halbmaskenkörpers (2) im Wangenbereich (7). Im Nasenbereich (6) ist ein zweiter Absatz (19) als Stützmittel vorgesehen, gegen den eine zweite Stirnseite (20) der ersten Filterhalterung (10) stößt. Das Stützmittel im Kinnbereich (8) des Halbmaskenkörpers (2) ist eine Stützlippe (21), die an einer dritten Stirnseite (22) der ersten Filterhalterung (10) anliegt. Der Halbmaskenkörper (2) ist als biegeschlaffes Elastomer ausgeführt und wird in der Weise mit der ersten Filterhalterung (10) verbunden, daß das Einatemventil (4) in die Anschlußöffnung (13) der ersten Filterhalterung (10) eingeknöpft wird. Dabei kommen der erste Absatz (17) an der ersten Stirnseite (18) zur Anlage, der zweite Absatz (19) an der zweiten Stirnseite (20) und die Stützlippe (21) an der dritten Stirnseite (22). Durch die Wechselwirkungen zwischen den Absätzen (17, 19), der Stützlippe (21) und den Stirnseiten (18, 20, 22) erhält der Dichtrand (3) die notwendige Stabilität, um dichtend am Gesicht des in der Figur nicht dargestellten Maskenträgers anzuliegen. Durch die Verwendung eines biegeschlaffen Elastomers für den Halbmaskenkörper (2) bzw. den Dichtrand (3) ergibt sich ein hoher Tragekomfort.In the transition area between the sealing edge (3) and the half-mask body (2), a first shoulder (17) in the form of an oblique, funnel-shaped surface is provided in the half-mask body (2) in the cheek area (7), which is arranged on a correspondingly designed first end face (18) of the filter holder is present. The inclined surface is generated in that the first end face (18) is angled slightly outwards. A corresponding first paragraph (17) and a first end face (18) are on the opposite side the half mask (1) attached, but not shown in Figure 1. When the half-mask (1) is put on, the first shoulder (17) bears against the first end face (18) due to the tension of the band (16). The first paragraph (17) is the support means of the half mask body (2) in the cheek area (7). A second shoulder (19) is provided in the nose area (6) as a support means, against which a second end face (20) of the first filter holder (10) abuts. The support means in the chin area (8) of the half mask body (2) is a support lip (21) which bears on a third end face (22) of the first filter holder (10). The half-mask body (2) is designed as a flexible elastomer and is connected to the first filter holder (10) in such a way that the inhalation valve (4) is buttoned into the connection opening (13) of the first filter holder (10). The first shoulder (17) comes to rest on the first end face (18), the second shoulder (19) on the second end face (20) and the support lip (21) on the third end face (22). Due to the interactions between the shoulders (17, 19), the support lip (21) and the end faces (18, 20, 22), the sealing edge (3) is given the necessary stability to fit the face of the mask wearer, not shown in the figure. The use of a flexible elastomer for the half mask body (2) or the sealing edge (3) results in a high level of comfort.

Figur 2 zeigt die Halbmaske (1) nach der Figur 1 im Vertikalschnitt. Gleiche Komponenten sind mit gleichen Bezugsziffern der Figur 1 bezeichnet.Figure 2 shows the half mask (1) according to Figure 1 in vertical section. Identical components are identified by the same reference numerals in FIG. 1.

Figur 3 zeigt eine zweite Halbmaske (30) mit einem Atemschutzfilter (31) für Rundgewindeanschluß und einer zweiten Filterhalterung (33). Gleiche Komponenten sind mit gleichen Bezugsziffern der Figuren 1 und 2 bezeichnet. Die Abdichtung des Rundgewindes (32) gegenüber der zweiten Filterhalterung (33) erfolgt über die in die Anschlußöffnung (13) eingeknöpfte Ventil-Gehäusefläche (23) des Einatemventils (4). Gegenüber dem Filter (12) nach den Figuren 1 und 2 ist ein separater Dichtring (122), Figur 1, bei der zweiten Halbmaske (30) nicht erforderlich. Die zweite Filterhalterung (33) unterscheidet sich von der ersten Filterhalterung (10) dadurch, daß ein Gewindestutzen (34) vorgesehen ist zur Aufnahme des Rundgewindes (32).Figure 3 shows a second half mask (30) with a respiratory protection filter (31) for round thread connection and a second filter holder (33). Same Components are identified by the same reference numbers in FIGS. 1 and 2. The round thread (32) is sealed off from the second filter holder (33) via the valve housing surface (23) of the inhalation valve (4) buttoned into the connection opening (13). Compared to the filter (12) according to FIGS. 1 and 2, a separate sealing ring (122), FIG. 1, is not required for the second half mask (30). The second filter holder (33) differs from the first filter holder (10) in that a threaded connector (34) is provided for receiving the round thread (32).

Claims (10)

Halbmaske mit einer Anschlußöffnung für ein Filter, mit einem nachgiebigen Halbmaskenkörper mit Dichtrand und einer festen, den Halbmaskenkörper umgreifenden Filterhalterung mit einer Bänderung, dadurch gekennzeichnet, daß der Halbmaskenkörper (2) ein mindestens stückweise umlaufendes Stützmittel (17, 19, 21) aufweist, welches mit den zum Dichtrand (3) weisenden Stirnseiten (18, 20, 22) der Filterhalterung (10, 33) bei aufgesetzter Halbmaske durch die Bänderung (16) in einer den Dichtrand (3) abstützenden Weise in Eingriff gebracht ist.Half mask with a connection opening for a filter, with a resilient half mask body with a sealing edge and a fixed filter holder with a band encompassing the half mask body, characterized in that the half mask body (2) has an at least piece-wise circumferential support means (17, 19, 21) which is brought into engagement with the end faces (18, 20, 22) of the filter holder (10, 33) facing the sealing edge (3) when the half mask is attached by means of the band (16) in a manner supporting the sealing edge (3). Halbmaske nach Anspruch 1, dadurch gekennzeichnet, daß das Stützmittel im Wangenbereich (7) des Halbmaskenkörpers (2) ein erster Absatz (17) ist, an dem eine erste Stirnseite (18) der Filterhalterung (10, 33) anliegt.Half mask according to Claim 1, characterized in that the support means in the cheek region (7) of the half mask body (2) is a first shoulder (17) against which a first end face (18) of the filter holder (10, 33) bears. Halbmaske nach Anspruch 2, dadurch gekennzeichnet, daß der erste Absatz (17) eine schräge, trichterförmige Fläche ist.Half mask according to claim 2, characterized in that the first shoulder (17) is an oblique, funnel-shaped surface. Halbmaske nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Stützmittel im Nasenbereich (6) des Halbmaskenkörpers (2) ein zweiter Absatz (19) ist, an dem eine zweite Stirnseite (20) der Filterhalterung (10, 33) anliegt.Half mask according to one of claims 1 to 3, characterized in that the support means in the nose area (6) of the half mask body (2) is a second shoulder (19) against which a second end face (20) of the filter holder (10, 33) bears. Halbmaske nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Stützmittel im Kinnbereich (8) des Halbmaskenkörpers (2) eine Stützlippe (21) ist, an welcher eine dritte Stirnseite (22) der Filterhalterung (10, 33) anliegt.Half mask according to one of claims 1 to 4, characterized in that the support means in the chin region (8) of the half mask body (2) is a support lip (21) against which a third end face (22) of the filter holder (10, 33) bears. Halbmaske nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Filterhalterung (10, 33) einstückig sowohl den Wangenbereich (7) als auch den Kinnbereich (8) des Halbmaskenkörpers (2) umgreift.Half mask according to one of claims 1 to 5, characterized in that the filter holder (10, 33) integrally encompasses both the cheek region (7) and the chin region (8) of the half mask body (2). Halbmaske nach Anspruch 6, dadurch gekennzeichnet, daß die Filterhalterung (10, 33) im Wangenbereich (7) und Kinnbereich (8) des Halbmaskenkörpers (2) zylinderförmig ausgeführt ist.Half mask according to claim 6, characterized in that the filter holder (10, 33) in the cheek region (7) and chin region (8) of the half mask body (2) is cylindrical. Halbmaske nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Halbmaskenkörper (2) ein Einatemventil (4) aufweist, welches in die Anschlußöffnung (13) der Filterhalterung (10, 33) einknöpfbar ist.Half mask according to one of claims 1 to 7, characterized in that the half mask body (2) has an inhalation valve (4) which can be buttoned into the connection opening (13) of the filter holder (10, 33). Halbmaske nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß eine zweite Filterhalterung (33) vorgesehen ist, bei der die umgeknöpfte Ventil-Gehäusefläche (23) des Einatemventils (4) Dichtfläche für ein Rundgewinde (32) eines Atemschutzfilters (31) ist.Half mask according to one of claims 1 to 8, characterized in that a second filter holder (33) is provided, in which the buttoned valve housing surface (23) of the inhalation valve (4) is a sealing surface for a round thread (32) of a respiratory protection filter (31) . Halbmaske nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Filterhalterung (10, 33) im Bereich des am Halbmaskenkörpers (2) befindlichen Ausatemventils (5) Ausatemöffnungen (14) aufweist.Half mask according to one of claims 1 to 9, characterized in that the filter holder (10, 33) has exhalation openings (14) in the region of the exhalation valve (5) located on the half mask body (2).
EP92118143A 1991-11-21 1992-10-23 Half mask Expired - Lifetime EP0543174B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138172 1991-11-21
DE4138172A DE4138172C2 (en) 1991-11-21 1991-11-21 Half mask

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EP0543174A1 true EP0543174A1 (en) 1993-05-26
EP0543174B1 EP0543174B1 (en) 1996-03-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0692274A3 (en) * 1994-07-15 1996-03-13 Weinmann G Geraete Med Individual mask
DE102021102801A1 (en) 2020-04-23 2021-10-28 Manuel Pescher Half mask for an adjustable safety standard
DE102020126618A1 (en) 2020-04-23 2021-10-28 Manuel Pescher Breathing mask with coordination element, coordination element and procedure
DE102021102802A1 (en) 2020-04-23 2021-10-28 Manuel Pescher Half mask for an adaptable functional state, interaction element with functional unit and process

Also Published As

Publication number Publication date
US5353789A (en) 1994-10-11
DE4138172C2 (en) 1994-06-09
EP0543174B1 (en) 1996-03-20
DE4138172A1 (en) 1993-05-27
DE59205755D1 (en) 1996-04-25

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