EP2913084A1 - Masque respiratoire protecteur doté de fermeture à baïonnette pour un module de filtre - Google Patents

Masque respiratoire protecteur doté de fermeture à baïonnette pour un module de filtre Download PDF

Info

Publication number
EP2913084A1
EP2913084A1 EP15154042.4A EP15154042A EP2913084A1 EP 2913084 A1 EP2913084 A1 EP 2913084A1 EP 15154042 A EP15154042 A EP 15154042A EP 2913084 A1 EP2913084 A1 EP 2913084A1
Authority
EP
European Patent Office
Prior art keywords
filter module
mask body
housing part
mask
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
EP15154042.4A
Other languages
German (de)
English (en)
Other versions
EP2913084B1 (fr
Inventor
Dietmar Thiel
Torben Skov
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.)
Moldex Metric AG and Co KG
Original Assignee
Moldex Metric AG and Co KG
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 Moldex Metric AG and Co KG filed Critical Moldex Metric AG and Co KG
Publication of EP2913084A1 publication Critical patent/EP2913084A1/fr
Application granted granted Critical
Publication of EP2913084B1 publication Critical patent/EP2913084B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B19/00—Cartridges with absorbing substances for respiratory apparatus

Definitions

  • the invention relates to a respirator mask with a mask body for covering the mouth and nose of a user, with at least one exhalation valve arranged on the mask body, with at least one inhalation valve arranged on the mask body, and with a respective inhalation valve and releasably attached to the mask body / fastened Filter module, wherein the mask body has an opening which is penetrated by a housing part of the inhalation valve, and wherein the housing part together with the filter module forms a detachable bayonet closure.
  • Respiratory masks of the type mentioned are known from the prior art. They serve to protect a user from air pollution.
  • a closed gas space is formed for the user, which is separated from the environment.
  • at least one exhalation valve and at least one inhalation valve both of which are arranged on the mask body, a gas or air exchange can then take place between the user and the environment through the mask body.
  • the inhalation valve is associated with a filter module through which the air must preferably flow before it reaches the inhalation valve.
  • the filter module (s) to replace if necessary.
  • different solutions are already known.
  • the US 5,222,488 B1 a filter module which can be screwed onto the mask body.
  • a respiratory mask emerges, in which the filter module can be connected to the mask body by means of a bayonet closure. It is provided that a housing part of the inhalation valve penetrates an opening of the mask body and is held against rotation on the mask body. The filter module can then be attached to the housing part from the outside and twisted to close the bayonet lock. This ensures a simple and secure attachment of the filter module to the mask body.
  • the disadvantage here, however, is that the mask body must be designed such that a rotation of the filter module on the mask body is always possible.
  • the invention is therefore an object of the invention to provide a respirator, which avoids the disadvantages described above in a simple and cost-effective manner.
  • the problem underlying the invention is achieved by a respirator with the features of claim 1.
  • This one has the advantage that accidental loosening of the bayonet closure in a simple manner avoided and at the same time the visual freedom of design of the respirator are increased, the release and fixing of the filter module to the mask body without increased effort is possible.
  • the respirator mask according to the invention is characterized in that the housing part is rotatably mounted in the opening of the mask body, and that the opening is formed in a bottom of a receiving recess of the mask body, which has a shape deviating from a circle for the rotationally secure reception of the filter module.
  • the invention thus provides that the filter module can be inserted into a receiving recess of the mask body.
  • the contour of the receiving recess deviates from a circle, so that it forms a positive rotation for the filter module, which expediently also has a deviating from a circular outer contour. If the filter module is inserted in the receiving recess, it can no longer be twisted. The bayonet lock is then closed or loosened by twisting the housing part, which passes through the opening of the mask body and is rotatably mounted in the opening. If the user wants to change the filter module, he only has to turn the housing part in the right direction to open the bayonet lock, remove the old filter module from the receiving recess and insert a new filter module in the receiving recess and turn back the housing part. Although the user must remove the respirator for this purpose. However, this leads to no disadvantage, since the user would not make the change of the filter module anyway in an environment in which he relies on the filtering effect.
  • the housing part has a circular-cylindrical base body and at one end face of the base body at least one support element for engagement with an inner side of the mask body.
  • the housing part is thus supported on the inside of the mask body by means of the at least one support element, so that it can not be pulled out through the opening of the mask body.
  • the support element is designed as an annular disc whose outer diameter is greater than the diameter of the opening. Due to the design as an annular disc, the support element rests evenly on the inside of the mask body, whereby the forces acting on the bayonet lock are transmitted uniformly and safely to the mask body and a simple rotatability of the housing part is ensured.
  • the housing part has a plurality of arranged on its outer wall shell of the body and radially projecting rear handle elements, which are adapted to cooperate with at least one rear handle counter element of the filter module.
  • the rear grip elements and the rear grip counter-elements thus form the bayonet closure, which can be closed or loosened by twisting the housing part and filter module to each other.
  • the rear grip elements and the at least one rear grip counter element form a positive rear grip, which prevents the filter module from being detached from the housing part and thus from the mask body.
  • the opening in the mask body on a plurality of radial recesses, which serve for the implementation of the rear grip elements of the housing part.
  • the rear grip elements are arranged (axially) spaced from the support element or to the annular disc, so that as soon as the rear handle elements have penetrated the opening, the housing part is preferably rotatably supported by its outer wall shell in the opening substantially free of play.
  • the filter module has a filter housing whose outer contour corresponds at least substantially to the contour of the receiving recess.
  • a sealing effect between the filter housing and the mask body on the peripheral side of the filter module can be achieved thereby, which increases the safety of the breathing mask.
  • the filter housing has the at least one counter-engagement element which is designed as a bayonet ring for receiving the housing part of the inlet valve.
  • the housing part is partially inserted axially into the bayonet ring, wherein the bayonet ring has corresponding radial recesses, at least in accordance with the number and arrangement of the rear grip elements provided on the housing part, through which the rear grip elements can be axially guided. If subsequently the housing part is twisted, reach the rear handle elements in the previously described closure position in which they engage behind the counter-locking counter-elements form fit.
  • the bayonet ring is arranged on a filter module base of the filter housing having a multiplicity of throughflow openings. While in principle according to a first embodiment it can be provided that the filter module in its filter module bottom only has an opening for the inhaled air, which is expediently arranged in the region of the bayonet ring for fluidic connection with the inlet valve, is provided according to this preferred embodiment that the filter module bottom a Having a plurality of flow openings, which are provided in particular outside of the bayonet ring. As a result, the total backpressure generated by the filter module when inhaling is kept low overall, so that breathing is particularly easy for a user. As described above, the sealing effect intended to prevent the filtered air from mixing with unfiltered air can be ensured by the adjustment of the contours of the filter module and receiving recess.
  • the filter module bottom and / or the receiving recess each have at least one spaced apart from the bayonet closure frame-like sealing web. Due to the frame-like course of the sealing bar is continuous, so without interruption, formed and surrounds the bayonet lock.
  • the sealing ridge is designed such that it seals in the closed state of the bayonet lock on the filter module bottom and / or rests on the bottom of the receiving recess.
  • the sealing web is at least partially formed elastically deformable.
  • the sealing bar also provides a spring force, which is used for secure closing of the bayonet closure.
  • the sealing ridge preferably extends parallel to the outer contour of the respective receiving recess.
  • the sealing web may also have a shape that is independent of or deviating from the outer contour.
  • the sealing web may extend in a circular ring around the inlet valve.
  • the sealing web is always arranged spaced from the side walls of the respective receiving recess.
  • the annular shape of the sealing web is not circular, but for example, polygonal, for example, square or rectangular or star-shaped.
  • At least one recess is formed between the bayonet ring and the filter module bottom.
  • the housing part has, even in the locked state of the bayonet closure, preferably at an axial distance from the filter module base in order to enable, for example, a loosening of the filter module by pressing against the mask body or against the spring force provided by the sealing element and an air flow to the inlet valve.
  • the base body has at least one radial recess for the air flow.
  • the rear grip elements and / or the at least one rear grip counter element preferably have at least one bevel in order to ensure that the filter module is pressed against the mask body when the bayonet closure is closed.
  • the slope is achieved during rotation of the housing part that the filter module is attracted to the mask body, so that in particular the sealing web is securely clamped between the filter module and receiving recess.
  • the bayonet closure has at least one locking means for releasably holding the bayonet closure in the closed position.
  • the locking means serves to further increase the security against unwanted loosening of the bayonet lock despite the already high security.
  • Detent means are in particular provided as locking means which, for example, are formed by at least one detent projection formed on the filter module or on the mask body and a detent projection receptacle formed on the mask body or the filter module, which interact in the closed state. realized. By overcoming the locking connection by appropriate application of a high torque to the housing part, this can be solved in a simple manner.
  • the latching connection is preferably associated with the bayonet lock.
  • the mask body is designed in several parts, with a mask base body and with at least one shell element forming the respective receiving recess, the shell element preferably having a higher rigidity than the mask main body. Due to the multi-part design, the production of the mask body is simplified. In addition, can be achieved by the multi-part design that the mask body and the shell element have different properties, especially in terms of their flexibility.
  • the mask main body has a higher flexibility than the shell element, it is ensured that the mask main body on the one hand agrees pleasantly to the face shape of the user, and that the shell element has a sufficiently high rigidity for secure and tight connection of the filter module with the Guaranteed mask body.
  • FIG. 1 shows in a perspective view of a respirator 1, which has a mask body 2, which is adapted to separate the nose and the mouth of a user from the environment.
  • the mask body facing the user has a flexible sealing lip 3, which adapts to the face shape of the user gas-tight when the respirator 1 is pressed against the face of the user, for example by means of the user's head engaging behind fastening straps, the mask body. 2 are moored.
  • the mask body 3 has centrally a bulge 4, which is assigned to the nose of the user, and which has an exhalation valve 5.
  • the exhalation valve 5 passes through the mask body 2 and lets air escape from the interior of the respirator 1 to the outside, while it closes in the opposite direction of flow, so that the user can not breathe air from the environment through the exhalation valve 5.
  • the respirator 1 further comprises two filter modules 8 and 9, each associated with one of the inlet valves 6 and 7 and can be arranged on the outside of the respirator 1.
  • FIG. 1 shows the respirator 1 with the filter modules 8, 9 arranged thereon.
  • FIG. 2 shows the respirator 1 without the filter modules 8, 9.
  • the inlet valves 6, 7 are each arranged in a bottom 10 of a respective receiving recess 11, wherein in the present case only one of the receiving recesses 11 can be seen.
  • an opening 18 is formed in the bottom 10, in which the respective inhalation valve 6, 7, the mask body 2 is arranged through.
  • FIG. 3 shows an enlarged exploded view of the respirator 1, wherein only the section of the filter module 8 is shown. The following description applies equally to the attachment of the filter module 9 to the mask body 2.
  • the inlet valve 6 has a housing part 14, which has a circular cylindrical basic body 15 and an end-side support element 16 in the form of an annular disc 17.
  • the housing part 14 passes through an opening 18 in the bottom 10.
  • the diameter of the opening 18 substantially corresponds to the outer diameter of the base body 15, so that the housing part 14 radially substantially free of play in the opening 18 is stored.
  • the housing part 14 itself is also hollow and has at least in the region of the annular disk 17, a grid structure 19 which carries a pin 20 in the center and is arranged in a flow opening 21 of the housing part 14.
  • the throughflow opening 21 is covered by a flexible valve element 22, which is circular disk-shaped and held centrally by the pin 20 on the housing part 14. If the user inhales, the valve element 22 deforms inwardly due to the negative pressure in the interior of the mask body 2, so that air can flow from outside to inside. In reverse pressure conditions, the valve element 22 seals the flow opening 21 or closes it.
  • the housing part 14 also has three rear grip elements 23, which are arranged distributed uniformly over the circumference of the main body 15 and protrude radially outward.
  • the rear grip elements 23 are arranged at a distance from the annular disc 17.
  • the edge of the opening 18 of the mask body 2 has according to the number and arrangement of the driving elements 23 radial recesses 24, through which the rear grip elements 23 can be passed together with the base body 15 through the opening 18.
  • the filter module 8 On the side facing the mask body 2, the filter module 8 has a filter module bottom 25, which is essentially arched like the bottom 10 of the receiving recess 11, so that between the filter module bottom 25 and the bottom 10 in the installed state, in particular in FIG. 4 shown, always a distance remains.
  • a rear handle counter-element 26 On the filter module bottom 25, a rear handle counter-element 26 is also arranged approximately in the middle, which is formed as a bayonet ring 27 which is spaced from the filter module bottom 25.
  • the bayonet ring 25 has a plurality of circumferentially spaced and according to the present embodiment integrally formed with the bayonet ring 27 spacers 28 which are fixedly connected to the filter module bottom 25. Between the spacers 28 thus recesses 29 are formed, whose function will be discussed later.
  • the bayonet ring 27 is annular and has according to the number and arrangement of the rear engagement elements 23 mutually corresponding radial recesses 30.
  • the rear grip elements 23 are designed such that they can engage behind the bayonet ring 27 when the housing part 14 is rotated accordingly relative to the filter module 8 as soon as the rear grip elements 23 have passed through the radial recesses 30.
  • the filter module 8 is thus introduced into the receiving recess 11 (axially), wherein the outer contour of the filter module 8 corresponds to the contour of the side wall 13, so that the filter module 8 also has a different contour from the circle.
  • an anti-rotation lock is formed by its contours, which prevents twisting of the filter module 8 in the receiving recess 11.
  • the filter module 8 is inserted so far into the receiving recess, in particular in the direction of the longitudinal axis of the housing part 14, until the rear grip elements 23 of the housing part 14 have passed through the radial recesses 30.
  • the housing part 14 is rotated, whereby the rear grip elements 23, the bayonet ring 27 axially - with respect to the longitudinal axis of the housing part 14 - engage behind.
  • the filter module 8 and the housing part 14 are positively connected to each other axially.
  • a sealing web 31 which is preferably formed elastically deformable.
  • the filter module base 25 is pressed against the sealing web 31, so that it is elastically deformed, in particular compressed, until the rear grip elements 23 can engage behind the bayonet ring 27.
  • the spring tension stored in the sealing web 31 ensures that on the one hand the filter module 8 and the housing part 14 are securely held together, and on the other hand that a closed chamber is formed between the filter module base 25 and the bottom 10 is bounded laterally by the sealing web 31.
  • a narrow recess 32 is formed, which extends parallel to the sealing ridge 31 over its entire course.
  • the filter module base 25 has at its outer edge a likewise circumferential projection 33 which engages in this recess 32.
  • the filter module bottom 25 has in the region of the limited by the sealing land 31 chamber a plurality of flow openings 34, of which only a few are provided with reference numerals for reasons of clarity here.
  • the filter module 8 has a substantially cup-shaped filter module housing 35, which has the filter module base 25 and in which a filter element 36 is arranged, which filters the ambient air on the way to the inlet valve 6.
  • the filter element 36 may be manufactured in a known manner and will therefore not be explained in detail at this point. It is important that the filter element 36 all flow openings Covered 34 so passes through the flow openings 34 only filtered air into the chamber between the filter module bottom 25 and bottom 10.
  • the filtered air then passes through the recesses 29 in the main body 15 of the housing part 14 and from there to the valve element 22, which deforms at a sufficient pressure difference - as described above deformed accordingly, so that the filtered air enters the interior of the mask body 2 and the user is available for inhalation.
  • the receiving recess 11 is formed directly in the mask body 2, it can also - as in FIG. 3 indicated - be formed by a shell member 37. This then expediently has a higher rigidity than a rest of the mask main body 38 in order to ensure secure locking and fastening of the filter module 8 to the mask body 2. At the same time the wearing comfort of the respirator 1 is optimized by a flexible design of the mask body 38.
  • the respective filter module 8, 9 is held against rotation in the corresponding receiving recess 11, and is secured by a rotation of the housing part on the mask body 2 by the bayonet closure 39 formed by the housing part 14 and the bayonet ring 27, ensures that an accidental Loosening of the respective filter module 8. 9 despite the attachment by means of a bayonet lock 39 is reliably prevented, since the bayonet lock 36 can be opened only from the inside of the mask body 2 ago.
  • the described design of the respirator 1 allows the Shape of the filter modules 8, 9 is not limited by the fact that the filter modules 8, 9 must be rotated or tilted for their assembly. As a result, the optical design of the respirator 1 can be chosen much more freely than previously usual.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP15154042.4A 2014-02-06 2015-02-05 Masque respiratoire protecteur doté de fermeture à baïonnette pour un module de filtre Active EP2913084B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202014001313.6U DE202014001313U1 (de) 2014-02-06 2014-02-06 Atemschutzmaske mit Bajonettverschluss für ein Filtermodul

Publications (2)

Publication Number Publication Date
EP2913084A1 true EP2913084A1 (fr) 2015-09-02
EP2913084B1 EP2913084B1 (fr) 2019-03-06

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EP15154042.4A Active EP2913084B1 (fr) 2014-02-06 2015-02-05 Masque respiratoire protecteur doté de fermeture à baïonnette pour un module de filtre

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EP (1) EP2913084B1 (fr)
DE (1) DE202014001313U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108741302A (zh) * 2018-07-11 2018-11-06 朱其厚 防护口罩
CN110973736A (zh) * 2019-11-29 2020-04-10 朱鹏飞 防水防护口罩
CN111109707A (zh) * 2020-02-08 2020-05-08 深圳市乐正科技有限公司 一种外置式过滤的防护口罩
CN111685409A (zh) * 2020-02-08 2020-09-22 朱鹏飞 一种外置式过滤的防护口罩
DE102021208145B3 (de) 2021-07-28 2022-12-15 Uvex Arbeitsschutz Gmbh Atemventilanordnung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210337891A1 (en) * 2020-05-03 2021-11-04 Shalin Raj Shah Mask and method of manufacturing the same
DE102020114514B4 (de) 2020-05-29 2021-12-30 Frank Hornung Atemschutzmaske mit austauschbaren Filterelementen
DE102021125599B4 (de) 2020-10-19 2022-12-15 Herbert Hatzlhoffer Atemschutzmaske

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592350A (en) * 1982-11-08 1986-06-03 American Optical Corporation Respirator
US4934361A (en) 1986-10-20 1990-06-19 Wgm Safety Corp. Respirator
US5222488A (en) 1991-07-11 1993-06-29 Donaldson Company, Inc. Respirator air filter cartridge with a replaceable filter element
US20070056589A1 (en) * 2000-04-18 2007-03-15 Avon Rubber And Plastics, Inc. Multi-stage respirator filter with tim filter option
US20080156329A1 (en) * 2007-01-03 2008-07-03 Gerson Ronald L Cartridge Respirator with Integral Filter Adaptor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4592350A (en) * 1982-11-08 1986-06-03 American Optical Corporation Respirator
US4934361A (en) 1986-10-20 1990-06-19 Wgm Safety Corp. Respirator
US5222488A (en) 1991-07-11 1993-06-29 Donaldson Company, Inc. Respirator air filter cartridge with a replaceable filter element
US20070056589A1 (en) * 2000-04-18 2007-03-15 Avon Rubber And Plastics, Inc. Multi-stage respirator filter with tim filter option
US20080156329A1 (en) * 2007-01-03 2008-07-03 Gerson Ronald L Cartridge Respirator with Integral Filter Adaptor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108741302A (zh) * 2018-07-11 2018-11-06 朱其厚 防护口罩
CN110973736A (zh) * 2019-11-29 2020-04-10 朱鹏飞 防水防护口罩
CN111109707A (zh) * 2020-02-08 2020-05-08 深圳市乐正科技有限公司 一种外置式过滤的防护口罩
CN111685409A (zh) * 2020-02-08 2020-09-22 朱鹏飞 一种外置式过滤的防护口罩
DE102021208145B3 (de) 2021-07-28 2022-12-15 Uvex Arbeitsschutz Gmbh Atemventilanordnung

Also Published As

Publication number Publication date
DE202014001313U1 (de) 2014-02-24
EP2913084B1 (fr) 2019-03-06

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