EP0543174A1 - Demi-masque - Google Patents

Demi-masque Download PDF

Info

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
Authority
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)
English (en)
Other versions
EP0543174B1 (fr
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/fr
Application granted granted Critical
Publication of EP0543174B1 publication Critical patent/EP0543174B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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).

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP92118143A 1991-11-21 1992-10-23 Demi-masque Expired - Lifetime EP0543174B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4138172 1991-11-21
DE4138172A DE4138172C2 (de) 1991-11-21 1991-11-21 Halbmaske

Publications (2)

Publication Number Publication Date
EP0543174A1 true EP0543174A1 (fr) 1993-05-26
EP0543174B1 EP0543174B1 (fr) 1996-03-20

Family

ID=6445199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92118143A Expired - Lifetime EP0543174B1 (fr) 1991-11-21 1992-10-23 Demi-masque

Country Status (3)

Country Link
US (1) US5353789A (fr)
EP (1) EP0543174B1 (fr)
DE (2) DE4138172C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0692274A3 (fr) * 1994-07-15 1996-03-13 Weinmann G Geraete Med Masque individuel
DE102020126618A1 (de) 2020-04-23 2021-10-28 Manuel Pescher Atemmaske mit Koordinationselement, Koordinationselement und Verfahren
DE102021102801A1 (de) 2020-04-23 2021-10-28 Manuel Pescher Halbmaske für einen anpassbaren Sicherheitsstandard

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DE4017336C1 (fr) * 1990-05-30 1991-06-13 Draegerwerk Ag, 2400 Luebeck, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0692274A3 (fr) * 1994-07-15 1996-03-13 Weinmann G Geraete Med Masque individuel
DE102020126618A1 (de) 2020-04-23 2021-10-28 Manuel Pescher Atemmaske mit Koordinationselement, Koordinationselement und Verfahren
DE102021102801A1 (de) 2020-04-23 2021-10-28 Manuel Pescher Halbmaske für einen anpassbaren Sicherheitsstandard
DE102021102802A1 (de) 2020-04-23 2021-10-28 Manuel Pescher Halbmaske für einen anpassbaren Funktionszustand, Interaktionselement mit Funktionseinheit und Verfahren

Also Published As

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

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