EP0720497A1

EP0720497A1 - Protective helmet with a gas-mask attachment device

Info

Publication number: EP0720497A1
Application number: EP94926710A
Authority: EP
Inventors: Wilfried Gebhartl; Andreas Kudla
Original assignee: Rosenbauer International AG
Current assignee: Rosenbauer International AG
Priority date: 1993-10-01
Filing date: 1994-09-29
Publication date: 1996-07-10
Anticipated expiration: 2014-09-29
Also published as: WO1995009675A2; ES2114222T3; AU7646494A; DE9490294U1; AT401997B; EP0720497B1; DE59405127D1; DK0720497T3; GR3026683T3; WO1995009675A3; ATA197793A

Abstract

The invention concerns a protective helmet (2) with a device (7) for detachably attaching a strapless gas mask (3). The attachment device has two attachment elements (61), each of which is attached to one of the two areas (8) inside the helmet (2) opposite the wearer's ears and to one of the two sides of the gas mask (3). Each of the attachment elements (61) is made up of two links (24, 34) which can engage with each other and be detached from each other, one link (24) being fixed to the helmet (2), preferably to the outer shell (17) of the helmet, and the other link (34) being fixed to the gas mask (3). The link (24) fixed to the helmet is mounted by means of a pivot pin (22) approximately perpendicular to the sides (8) of the outer shell (17), in the outer shell (17) and/or in a support harness and/or an inner helmet. The link (24) fixed to the helmet is recessed into the inside wall of the helmet (2) or the outside of the outer shell (17) and/or is adjustable in height along the pivot pin (22) relative to the outside.

Description

Protective helmet with a connection device for a respiratory mask

The invention relates to a protective helmet with a connection device for the releasable fastening of a strapless respirator, as described in the preamble of claim 1.

A protective helmet for the detachable fastening of a respiratory mask with a connecting device is known - according to DE-C3-26 40 701, in which both locking elements of the connecting device, which can be releasably engaged with one another, are arranged within the outer boundary of the protective helmet. This connecting device consists, for example, of a latching bell which is held via a holding element in a recess of the protective helmet, into which a latching element fastened to the respirator mask 15 can snap, with an appropriate prestress between the respirator mask and the face of the patient by appropriate adjustment User and the support of the counterforce can be achieved via the protective helmet. The disadvantage here is that the determination or adjustment of the contact pressure and the loosening of the fastening device is carried out by the bearing device of the connecting device penetrating the protective helmet, and accordingly the protective helmet must be provided with relatively large openings and recesses.

Another known protective helmet - according to EP-B1-0 105 813 has a rigid calotte and an inner hood made of flexible transverse bands, the side parts of which are in

25 converge points symmetrical to the central longitudinal plane of the protective helmet and lying approximately at the level of the user's ears, the protective helmet being articulated on the removable respirator mask by at least one adjustable fastening arm on the side. The cap of the protective helmet is on the outside of each of its sides at the level of the user's ears with hooking notches or slots

30 Attach two side mounting arms. These are connected to the respiratory mask on both sides thereof. Each of the lateral fastening arms has two telescopic elements which are connected to one another by resilient elements.

* tied and biased so that they try to penetrate each other. A hook cooperating with the associated hooking notch of the calotte is

35 pivotally mounted on the rear telescopic member of the mounting arm. On the front telescopic element of the fastening arm and on an extension of the hook, stop means are provided, through which the two elements in extended position can be temporarily locked. Unlocking means are also provided for these stop means, by means of which the support of the fastening arms on the outer surface of the protective helmet can be triggered when the respirator mask is put on. With such a protective helmet and a respirator mask connected thereto, sufficient safety for the user of such a combination of a protective helmet and respirator mask could not be achieved in all cases.

However, other connecting devices between protective helmets and respiratory masks known from the prior art are also known - according to DE-Cl

33 00 646 -, which are constructed in such a way that the pretensioning or the pressing force of the respiratory mask on the face of the user can be determined by actuating members on the respiratory protection mask. The operation of the connecting devices proves to be difficult, particularly with gloves.

Similar constructions of such connecting devices are also known from DE-AI 41 33 653 and EP-B 1-0 236 240.

Furthermore, a protective helmet with a respirator mask detachably attached to it is also known - according to DE-C3-25 49 979, in which the connecting device is arranged in a recess in the calotte of the protective helmet and has protruding locking parts in the interior surrounding the protective helmet which engage directly in the corresponding locking elements of the respiratory mask. The locking parts or pins, which are arranged in the connecting device and are perpendicular to the protective helmet wall, can be snapped into the locking elements on the respiratory mask from outside the protective helmet, as can the release of the locking. Due to the lack of a tensile connection between the two locking parts of the connecting device in the protective helmet and the latching elements on the respiratory mask, the two latching elements can disengage when the protective helmet is twisted or slipped relative to the respiratory mask.

The present invention is based on the object of creating a protective helmet with a connecting device for the releasable attachment of a tapeless respirator mask, in which the protective helmet-side components of the connecting device do not complicate the use of the protective helmet without a breathing mask, good adaptation, a tight fit of the breathing mask as well as simple operation of the connecting device. This object is achieved by the features in the characterizing part of claim 1. It is advantageous here that a construction is possible in which no openings in the protective helmet are necessary in order to hold corresponding device parts. In addition, due to the articulated arrangement of the coupling elements, a good adaptation and a tight seal between the breathing mask and the face of the user can be achieved, since the distance between the protective helmet and the face can be adjusted over a wide range. In addition, due to the connecting elements used, a firm fit of the respirator mask on the face of the user is achieved with support over the protective helmet, the elasticity and prestressing of the respirator mask in the edge regions relative to the face being used in the case of relative movements, in order to prevent the sealing Maintain degree. The safety function of the protective helmet is not adversely affected even when used without a respiratory mask and, on the other hand, simple operation and more precise anchoring due to the fact that the helmet-side coupling part is lowered and / or can be adjusted or folded out in the interior of the protective helmet or in the outside of the protective helmet reaches the respirator mask when the protective helmet and respirator mask are used together. This makes it possible to use rotatably mounted coupling parts on the helmet side and thus to achieve a decoupling-safe connection when tightening and pressing the respiratory mask against the face, without the coupling parts on the protective helmet and on the respiratory mask coming out of engagement.

However, according to the features in claim 2, it is also advantageous that its length, at least in the case of the tensile stresses for the tight fit of the respirator mask on the face of the user, which occur between the respirator mask and the protective helmet, cannot be changed in length, that is to say components are more fixed Use length, which are designed to be tensile, which reliably prevents the respiratory mask from being loosened involuntarily by being attached to the fastening parts on projections, falling components or the like. In addition, the contact pressure of the mask cannot change due to the switching off of elastic intermediate members between the protective helmet and the respiratory mask.

According to a further embodiment according to claim 3 it is achieved that, despite the tensile connection due to the limp configuration, an optimal adaptation of the coupling parts to the different face shapes is achieved. In addition, the elements dodge more easily when subjected to lateral pressure Above all, injuries to the user due to sharp-edged parts can be avoided.

An embodiment according to claim 4 is also possible, whereby a simple adaptation of the coupling parts in their course to different face widths is possible.

Another further development of the protective helmet is characterized in claim 5, since the shear-resistant arrangement of the coupling parts prevents a coupling part from escaping in the sliding-open direction of the respiratory mask during the relative movement of the coupling parts to fix the respiratory mask on the face of the user. However, this allows in a particularly advantageous manner a one-hand operation when putting on the respirator or is achieved in that the user of such a combination of protective helmet and respirator presses the mask with one hand and thereby the coupling parts in their desired relative position to generate a can adjust sufficient contact force while he has the other hand free to fix the position of the protective helmet with the protective helmet during the locking movement of the respiratory mask. This considerably shortens the time it takes a user of this combination of protective helmet and respiratory mask to be ready for use.

However, an embodiment variant according to claim 6 is also possible, since an unforeseen uncoupling of the coupling parts by securing them is avoided with certainty, especially during the use of the respiratory mask, whereby a deliberate release process is necessary due to the need for releasability and thus the Risk of accident is reduced when using this protective helmet.

The advantage of the further development according to claim 7 is that one-hand operation is possible when the respirator is placed on the face and the adjustment and locking of the coupling parts is made possible by the press-on movement of the respirator on the face.

In another embodiment according to claim 8, the fastening forces are distributed over a larger area, which also ensures a high tensile strength of the connection in the different positions.

The further embodiment according to claim 9 ensures that the coupling The part for attaching the respirator while using the protective helmet without a respirator cannot adversely affect the user's visual field and, moreover, it is prevented from being obscured.

In a further embodiment according to claim 10, it is made possible that despite only one connecting device on each side of the respiratory mask, multi-point support is achieved on the respiratory mask, as a result of which a tighter fit can be achieved over the circumferential area.

The further development according to claim 11 is also advantageous, since a four-point support is thereby achieved with two connecting devices between the protective helmet and the respiratory mask.

Through the further embodiment according to claim 12, a loosening of the respirator mask from the face of the firefighter or user in the event of tensile loads acting on the respirator mask from above can also be prevented and, in conjunction with the connecting devices arranged in the flank area of the protective helmet, a five can be achieved with simple means Point support similar to the conventional respirator mask can be achieved with elastic fastening straps.

An even better adaptation to different face lengths is achieved by the configuration according to claim 13.

A low weight and a large adjustment range can also be achieved by designing the coupling parts according to claim 14.

The adjustment range and the fine adjustment of the seat of the respirator mask on the face of the user, in particular with independent adjustment in the individual fastening points, can be achieved by the development according to claim 15.

Due to the design and arrangement of the actuating member according to claim 16, a jamming or snagging with the protective helmet when slipping through constrictions can be reliably avoided.

A further development according to claim 17 is also advantageous, since the space zones arranged for the recessed arrangement of the actuating member simultaneously serve to Locking against unwanted twists can be used.

A design of the actuating member as a rocker clamp lever according to claim 18 is also preferred, since with the unlocking of the rocker clamp lever it can simultaneously be used as an actuating member and thus the adjustment and locking function can be effected with one component.

A protected arrangement and the avoidance of incorrect operation is made possible by the design of the latch clasp according to claim 19.

The development according to claim 20 can also prevent accidental unlocking of the connecting device between the protective helmet and the respiratory mask even when pressure is exerted unintentionally, for example when striking with a protective helmet on a component on a wall or a door.

The design of the latching element according to claim 21 enables, if necessary, easier operation by the user when he is wearing gloves.

Improved mounting and adaptation of the breathing mask to the face of the user can also be achieved by the further development according to claim 22, since the stiffened zones of the breathing mask can be used to exert the pressure force in the direction of the face of the user and the accessibility for actuation the locking clasp is better even when the protective helmet and respiratory mask are on.

The arrangement of the locking clasp on the holding frame according to claim 23 also ensures that the locking clasp is held in a tear-out manner, a large-area introduction of force preferably being possible through the connection between the locking clasp and the holding frame by means of a molding process.

An arrangement according to claim 24 is also advantageous, since it can further improve the accessibility to the latching clasp.

A mounting of the respirator mask on the head of the user completely decoupled from the movements of the helmet is achieved in a surprisingly simple manner by the further design according to claim 25. The fact that the connecting elements The protective helmet can move relative to the neck cushion or its holder directly, without the position of the respiratory mask relative to the face of the user being changed.

Such a decoupling of movement can be improved by the further development according to patent claim 26, since not only blows which occur on the protective helmet from the back of the user, but also oblique impacts coming from above cannot negatively influence the fit of the respiratory mask.

Finally, an advantageous further development is also possible through patent claim 27, whereby the advantages of the rigid connection with the protective helmet and possibly simplified operation of the connecting device are combined above all with a gloved hand, this latching clasp or clamp clasp and the band-shaped connecting element are arranged in a recessed area of the protective helmet shell.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings.

Show it:

1 shows a firefighter with a combination according to the invention of a protective helmet and a respiratory mask in a simplified, schematic representation;

2 shows the protective helmet with the associated connecting device for releasably attaching the strapless respiratory mask to it in its relative position prior to attaching the respiratory mask to the protective helmet in a side view and a simplified, schematic illustration;

3 shows the protective helmet and the respirator mask according to FIG. 2 in the use position with the respirator mask applied to the head of a user, in a side view, partially cut and a simplified, schematic illustration;

4 shows the helmet according to FIG. 2 or 3 in a side view, in section;

5 shows the connection device between the protective helmet and the respiratory protection Mask in side view, cut, along the lines VV in Fig. 3;

6 shows another embodiment variant of a combination of a protective helmet and a respirator mask with three connecting devices between them in a side view, partly in section and in a greatly simplified, schematic representation;

7 shows another embodiment variant of a connecting device between the protective helmet and the respiratory mask in a side view and a simplified, schematic illustration;

FIG. 8 shows the connecting device according to FIG. 7 in an end view, in section, according to lines VIII-VIII in FIG. 7;

Fig. 9 shows another embodiment of the holder of the coupling part in

Safety helmet with a positional fixation of the respiratory mask in relation to the head of a user in a side view, cut;

10 shows another embodiment of the protective helmet with an associated connection device for the detachable attachment of the strapless respiratory mask to the latter in its relative position prior to the attachment of the respiratory mask to the protective helmet in a side view and a simplified, schematic illustration;

11 shows another embodiment variant of a connecting device between a protective helmet and a breathing mask with a coupling part arranged on the outer surface of the protective helmet for hanging in a coupling part fastened to the breathing mask, preferably length-adjustable against spring preload, in a side view and a simplified, schematic representation;

FIG. 12 shows a part of the protective helmet according to FIG. 11 in a frontal view, cut, according to lines XII-XII in FIG. 11.

1 shows a firefighter 1 who wears a protective helmet 2 and a respirator mask 3 of a respirator 4 as personal protective equipment. chem also include the bottles 5 in which the breathing air is stored under high pressure. The personal protective equipment of the firefighter 1 is used to make him independent of the ambient air, so that, as shown in the present exemplary embodiment, the fight against a fire with a jet pipe 6 is also possible in an atmosphere enriched with poisonous gases and possibly also low in oxygen becomes.

The strapless breathing mask 3 is connected via a connecting device 7 to a flank area 8 in the area of the ears of the fireman 1 and consists of two coupling parts 9 and 10, one of which is attached to the protective helmet 2 and the other to the breathing mask 3. The breathing mask 3 further comprises a viewing window 11, a mounting frame 12 for this viewing window 11 and a sealing edge 13, with which a sealing seal between the breathing mask 3 and a face 14 of the fireman 1 is produced. The dosing of the breathing air from the bottles 5 takes place via a regulator 15. The loading of the regulator 15 with compressed air from the bottles 5 can be controlled via a control valve 16.

Of course, it is possible for the fireman 1 to carry only one bottle of breathing air or several bottles of breathing air. Furthermore, it is also possible that regeneration or circulation devices are used instead of the container devices. It is also irrelevant to the present invention whether normal compressed air breathing apparatus with a regulator or overpressure systems are used.

2 to 5, the protective helmet 2 and the respiratory mask 3 connected to it via the connecting device 7 are shown in detail.

The protective helmet 2 comprises a protective helmet shell 17 in which a support frame 18 is arranged for adaptation to the different head dimensions of the user. A head width of the support frame 18 can be adjusted by means of an adjusting device 19. A support plate 20 is fastened to the support frame 18 in the flank region 8 of the protective helmet 2, for example via rivets 21, which, as can be seen better from FIG. 3, has a pivot axis 22 of a joint arrangement 23 for holding a coupling part 24 which In the present case, it is formed by a locking band 25 and a rotation axis 26 about which a chin strap 27 can be rotated.

Around this pivot axis 22 there is also a visor 28 made of one in FIGS 3 shown in full lines, rest position within an interior 29, which is enclosed by the protective helmet shell 17, can be pivoted into a working position shown in dashed lines.

This visor 28 is primarily intended for use without the breathing mask 3 shown at a distance from the protective helmet 2. However, it is also possible, if the visor 28 and the respiratory mask 3 are designed accordingly, to use these simultaneously with one another.

The respiratory mask 3 comprises the viewing window 11 which is held in the mounting frame 12. The sealing frame 13 adjoins the mounting frame 12 and serves to seal the respiratory mask 3 between the latter and the face 14 of a user. Arranged on this sealing edge 13 is a holding bracket 30 which engages at two fastening points 31, 32 of the breathing mask 3 on the sealing edge 13. A further coupling part 34, in the present case for example a latching clasp 35, is arranged via a cantilever arm 33 projecting over the holding bracket 30 in the direction of the viewing window 11. This latch clasp 35, as can best be seen from FIG. 5, consists of a U-shaped housing part 36 which is formed from a base 37 and two legs 38 and 39 arranged perpendicularly thereto. In the area of an end 40, the two legs are connected to one another in the area of their upper edge 41 by a cross piece 42. A pushbutton 43 is inserted between the two legs 38 and 39 and is biased with a torsion spring 44 in the direction of the base 37 of the housing part 36.

This pushbutton is biased or pivotable about an axis of rotation 45 against the action of the torsion spring 44 in the region of the crossbar 42 on the base 37. A locking lug 46 is arranged on the end of the push button 43 opposite a push button 47 and facing away from the crossbar 42.

In order to achieve an optimal adaptation of the respiratory mask 3 to the respective user, the coupling part 34 is likewise articulated and thus rotatably connected to the holding bracket 30 or the cantilever arm 33 about a pivot axis 22 of a joint arrangement 23.

The opposite coupling part 24 assigned to this coupling part 34 consists in the present case of a locking band 25, which is tensile but flexible. In the end area facing the coupling part 34, this locking band 25 is also slight Provide spacing 48 arranged consecutively. These have an obliquely rising flank 49 in the direction of the pivot axis 22, while the latching flank 50 facing the protective helmet shell 17 is oriented essentially perpendicular to a surface 51 of the latching band 25.

As can be seen better from FIG. 5, the pushbutton 43 ratchets upwards when the locking band 25 is inserted between the latter and the base 37 of the coupling part 34 and snaps behind the locking edge 50. Thus, the respirator mask 3 can be pressed against the face 14 with sufficient pressure in accordance with the respective shape of the face 14, so that after the pressure exerted on the respirator mask 3 in the direction of the face 14 to adapt the mask is supported, this is supported by the support frame 18 of the protective helmet 2 is tight and thus rests with its sealing edge 13 sealingly against the face 14 of the firefighter 1, because due to the snap-in of the latch 46 behind a latching flank 50 the respiratory mask 3 cannot move away from the latter in the direction opposite to the helmet 2 . If the fireman 1 has the feeling that the mask is too loose, he only needs to press the mask even more against the protective helmet 2 in order to achieve a sufficiently firm fit.

Likewise, it is also possible to quickly remove the respiratory mask 3 from the face 14 of the fireman 1, since only by simultaneously pressing the pushbutton of the coupling parts or latch clasps 35 arranged on both sides in the flank areas 8 of the protective helmet 2, which also includes a gloved finger can be carried out easily, the latching connection between the latching clasp 35 and the latching band 25 can be canceled and the respiratory mask 3 can be removed in the direction away from the protective helmet 2.

The use of the holding bracket 30 ensures that, despite the use of only one connecting device 7 in the area of each of the two flank areas 8 of the protective helmet 2 due to its support at two fastening points 31 and 32 on the sealing edge 13 of the respiratory mask 3 4-point support is achieved.

By mounting the coupling part 24 or latching part on the pivot axis 22, the position of the respiratory mask 3 can be adapted to the length of the face 14 of the firefighter 1 without causing unwanted tension between the chin of the user and the protective helmet 2. As can further be seen from the illustration, in particular in FIG. 3, the respiratory protection mask 3 is arranged on the face 14 of the fireman 1 such that the sealing edge 13 comes to lie between the face 14 and a helmet band 52 of the support frame 18.

Before the respirator mask 3 is put on, the diameter of the supporting frame 18 can be increased via the adjusting device 19 so that the sealing edge 13 can be inserted between the helmet band 52, whereupon the diameter of the supporting frame 18 with the adjusting device 19 is again used for the tight fit of the protective helmet 2 as far as can be tightened than is necessary for the tight fit of the protective helmet 2 on the head of the fireman 1.

From FIG. 4 it can also be seen that the interior of the protective helmet 2 comprises a supporting net 53 which can be fixed in height relative to the helmet band 52 by means of adjusting bands 54.

On the helmet band 52, the coupling part 24, namely the locking band 25, is rotatably mounted about the pivot axis 22 via the support plate 20.

Furthermore, a neck cushion 55 is arranged on the helmet band 52 of the support frame 18, which should enable a firm fit of the protective helmet 2 and, at the same time, should switch off the injury effect when the protective helmet 2 is struck.

In the protective helmet shell 17, a reinforcement element 56 is arranged in the apex area, which can also accommodate, for example, a structure-borne sound microphone 57 of a radio system.

As can be seen better from Fig. 5, the retaining bracket 30, which the coupling part 34, which, for example, stores the latch clasp 35, is via adapter bracket 58, e.g. made of stainless steel sheet or plastic with the sealing edge 13 of the respirator 3. As a result, the anchoring elements 59 of the respiratory mask 3, which are usually provided for fastening the straps to such a respiratory mask 3, can also be used relative to the protective helmet 2.

It is essential in this type of connection device that the helmet-side coupling part 9, 24 and the coupling part 10, 34 assigned to the respiratory mask 3 are attached to the protective helmet 2 or the support frame 18 and the respiratory mask 3 in a thrust-resistant manner. The advantage of this shear-resistant fastening is that during the insertion of the coupling part 9 or 24 into the coupling part 10 or 34 a relative movement between the two coupling parts is ensured even when the pressure is exerted, without the two coupling parts coming out of engagement , since apart from the relative movement between the two coupling parts required to set the distance of the respiratory mask 3 from the protective helmet 2, no relative movement of the latter relative to the protective helmet 2 or respiratory mask 3 is possible, as is the case, for example, with known protective helmets, in which the ge - mutually adjustable holding elements of the coupling part are suspended in an opening or a recess in the protective helmet shell 17 or protective helmet 2 for receiving tensile forces in the direction of the respiratory protection mask 3, but with compressive forces or pushing forces which are exerted by the respiratory protective mask 3 in the direction of the protective helmet 2 act from di can dig out recesses or openings.

In addition to the tensile strength, in particular of the coupling part 24, that is to say of the locking band 25, it is also advantageous in this case if this coupling part 24 is designed to be pressure-resistant in order to enable this locking band 25 to be pushed and ratcheted through by the locking clasp 35 with one-hand operation.

Especially when using the combination of a locking band with a locking clasp, it is possible that after the respiratory mask 3 is hooked in with the locking clasps 35 on the locking bands 25 of the two connecting elements, the breathing mask with one hand in the direction of the face of the User can be pressed, where necessary alternately in the left and right half of the face, the necessary pretension pressure is built up for tightly fitting the respiratory mask 3 on the face of the user, wherein the second hand can be used to put on the protective helmet 2 in the direction of Respirator 3 to build directed counterforce so that a firm pushing against each other and thus a secure and tight fit of the respirator 3 is achieved on the face of the user.

However, this also makes it possible to hold the breathing mask in the loose state, that is to say not yet tightened, on the face 14 of the user, but with coupling parts 24 and 34 already in engagement, as a result of which the set-up time for the tight fitting of the breathing mask 3 can also be reduced.

It can also prove to be advantageous if the coupling parts 24, 34, in particular if one of these coupling parts is designed as a locking band 25, to preset a certain total length, so that even with large differences in the dimensions of the face, the respiratory mask 3 can be quickly adapted to the face 14 of the user.

Furthermore, it is particularly advantageous that in the coupling parts 9, 10 and 24, 34, the coupling parts are fixed in their engaged position and only if necessary, i.e. can be solved by a conscious activity of the user. This not only makes it easier to put on the respirator 3, but also reliably prevents the respirator 3 from being released from the protective helmet 2.

FIG. 6 shows a further embodiment variant of a connecting device 7 between the protective helmet 2 and the breathing mask 3.

In addition to the connecting elements 60, 61 arranged in the mutually opposite flank areas 8 of the protective helmet 2, of which only the connecting element 61 can be seen in FIGS. 1 to 3 and 5 and only the connecting element 60 in FIG. 4, a further connecting element 62 is provided in the protective helmet 2 according to FIG. 6. This connecting element 62 consists of a holding band 63, in which an opening 64 in an anchoring element 65, e.g. a hook, which is attached or molded to the sealing edge 13 of the respiratory mask 3, is provided.

The anchoring element 65 is arranged, for example, in the plane of symmetry of the respiratory mask 3 on the sealing edge 13.

The holding strap 63 is guided inside the protective helmet 2, for example by means of tabs 66, and is connected at its end facing away from the opening 64 to a cable 67 which is fastened on a spool 68. The coil 68 is mounted in an opening 69 of the protective helmet shell 17 via a drive shaft 70. On this drive shaft the coil 68 is also provided in the interior 29 of the helmet and on the outside, ie above the outside surface of the protective helmet 2, an actuating member 71, for example a rocker arm, is provided.

This actuating member is about a pivot axis 72 passing through the drive shaft 70 from a locked rest position in contact with the surface of the protective helmet 2 - as better described below with reference to the illustration in FIGS. 7 and 8 will be shown - in the tensioning position drawn in full lines in FIG. 6, in which, for example, by turning the actuating member 71 or the drive shaft 70 in the direction of an arrow 73 by turning counterclockwise, the holding strap 63 in the direction of the Respiratory mask 3 can be extended from the interior 29 of the protective helmet 2 and can be drawn into the interior 29 by turning it clockwise.

This arrangement opens up the possibility of holding the respiratory mask 3 not only in the two flank regions 8 of the protective helmet 2, but also additionally in the forehead region of the firefighter 1. This enables the sealing edge 13 of the respiratory mask 3 to fit more tightly or becomes the risk that a slight displacement of the protective helmet 2 relative to the head of the firefighter 1 can result in a leak, which, particularly in the case of normal pressure breathing apparatus, is a danger for the firefighter 1 when breathing in the breathing air and due to the leak Place into the interior of the respirator 3 can lead to toxins.

If the respirator mask is not used, the retaining strap 63 can be brought into the interior 29 of the protective helmet 2 or, if appropriate, held between the visor 28 and the inner surface of the protective helmet shell 17 by appropriately winding the cable 67 onto the spool 68.

The details of the connecting elements 60 and 61 between the protective helmet 2 and the respiratory mask 3 correspond to those as described with reference to FIGS. 1 to 5, so that the same reference numerals are used here for the same parts as for the coupling part 24 and 34 and the retaining bracket 30 and for the coupling part 34 formed by the locking clasp 35 can be used.

7 and 8 show another embodiment for the connecting device 7, in which the connecting elements 60, 61 are designed in accordance with the design of the third connecting element 62. In this exemplary embodiment, the coupling parts 24 are formed by the connecting elements 60 to 62.

In this case, a holding bracket 30 is provided, which is fastened to the holding frame 12 of the breathing mask 3 by means of its own fastening device. The attachment can be achieved, for example, by means of connecting elements, which are usually arranged in this area, for tensioning the mounting frame 12 for the viewing window 11. consequences. A holding opening 74 is provided in the holding bracket 30, into which a locking hook 75 fastened to the cable pull 67 can be hung. Of course, it is also possible to mount the holding bracket 30 on the fastening element located with the mounting frame 12 so that it can be pivoted about an axis running approximately perpendicular to the viewing window or on all sides in an articulated manner. In addition, it is also possible to arrange a locking clasp 35 on this retaining bracket 30 in order to enable a connection, similar to the illustration in FIG. 2, between the breathing mask 3 and the protective helmet 2 to the further coupling part 24.

In this case too, the retaining bracket 30 and / or the latching clasp 35 can be adjustable relative to the mounting frame 12 about a pivot axis running approximately perpendicular to the viewing window 11 or about a spatial pivoting arrangement relative to the mounting frame 12. This makes it possible to form and arrange the latch clasp 35 on the mounting frame 12 of the respiratory mask 3, also in connection with the coupling part 24, as shown in FIGS. 2 and 3.

As already described with the aid of the connecting element 62, the distance between the respiratory mask 3 and the protective helmet 2 can then be reduced by rotating the actuating member 71 in the swiveled-up position shown in broken lines, in which the rotation thereof is released until the

Respiratory mask 3 with its sealing edge 13 lies tightly and firmly against the face 14 of the fire fighter 1. In this position, the actuating member 71 is then pivoted from the position shown in broken lines in FIG. 8 into the fixed rest position shown in solid lines in this figure. The fact that the actuating member 71 is located in a recess adapted to its outer shape means that despite a pull in the direction of an arrow 76 via the cable pull 67, the cable pull cannot roll off the spool 68 and is fixed in its position in relation to the protective helmet shell 17 . The structure or the arrangement and mounting of the actuating member 71 is as shown in FIG. 6, the coil 68 being fastened to the drive shaft 70 in the same way as that about the pivot axis 72 from the full lines to the dashed lines Drawn position pivotable actuator 71 as shown in FIG. 8. Of course, the bearing design can be chosen as desired, and the stops 77 causing the rotation of the actuator 71 can be arranged in an outstanding manner on the outside of the protective helmet shell 17.

However, a recessed design and arrangement of the actuating member 71 is advantageous, since during the use of the protective helmet 2 during rescue operations, Especially in fire or rescue operations, an unforeseen opening of the closure element and thus a release of the respiratory mask 3 from the face 14 of the fireman 1 or the user can be reliably prevented.

However, it is also possible to design the actuating member 71 in the form of a rocker clamp lever, since both simple operation and a perfect fixation of the cable pull 67 with the spool 68 are thereby achieved.

A protective helmet 2 is shown in FIG. 9, which enables the respiratory mask 3 to be attached directly via the connecting device 7.

The design of the protective helmet 2 or the respirator mask 3 and the connecting device 7 corresponds, for example, to the embodiment described previously in accordance with FIGS. 2 to 5, it also being possible to use any other embodiment of the helmet.

The support plate 20 for mounting the coupling part 24, namely the locking band 25, in the interior of the protective helmet 2 is via an axis 78, for example a correspondingly designed rivet on a crossbar 79, which connects the helmet band 52 in the two flank regions 8 of the protective helmet 2 connects, rotatably mounted.

As already described above, in addition to the coupling part 24, the chin strap 27 is mounted on this support plate 20 in an articulated manner.

Since the protective helmet 2 can move from the position drawn in full lines to the position shown in dashed lines, for example in the event of impact, there is now the risk that the respiratory mask 3 from the face 14 of the firefighter 1 in this over the coupling parts 24 and 34 is moved away in the opposite direction and leaks occur between the sealing edge 13 and the face 14 of the fireman 1.

In order to prevent this, the pivotable support plate 20 is connected to the neck pad 55 via a tension-resistant spacer 80, which in turn is connected to the helmet band 52 in a manner fixed against movement.

This has the effect that despite the movement of the support plate 20 from the position 81 drawn in full lines in the direction of the dashed lines in the event of an impact. kung on the protective helmet 2 in the direction of an arrow 82, a distance 83 between the neck pad 55 and the attachment point of the spacer 80 on the support plate 20 remains constant, ie the support plate 20 is pivoted in a direction opposite to the impact action according to distance 83, and therefore remains the relative position of the pivot axis 22 and thus also of the coupling part 24 with respect to the face 14 of the fireman 1 unchanged.

Because of the pivotable mounting of this support plate 20 on the protective helmet 2, for example in the direction of the arrow 82, impacts or pulling or pushing movements which lead to a relative displacement of the protective helmet shell 17 with respect to the face 14 of the firefighter 1 do not lead to any leaks lead between the face 14 and the respirator 3.

10 shows a further embodiment variant, in which a connecting element 84 is provided, in which the coupling part 34, for example that

Locking clasp 35 is arranged on the outside of the protective helmet 2, for example in a recess in the protective helmet shell 17.

In addition to the recess for receiving the coupling part 34, a further recess 85 can also be provided, in which the connecting element 84, which is formed by the locking band 25 and is fastened in an articulated manner to the retaining bracket 30, extends from the edge of the protective helmet shell 17 to the locking clasp 35.

In order to be able to easily adapt the respiratory protection mask 3 to different face shapes or face lengths, it is advantageous if the recess 85 from the coupling part 34, which is articulated about the pivot axis 22 on the protective helmet shell 17, in the direction of the helmet rim or the breathing mask 3 is designed to expand conically. This makes it possible for the locking band 25 held in the locking clasp 35 to assume two different angular positions with respect to the protective helmet.

Furthermore, FIG. 10 also shows an embodiment variant for the formation of locking elements 86 on narrow side edges 87 of the connecting element 84 of the coupling part 24 for the locking band 25 in dashed lines. The shape of the latching elements 86 corresponds to the shape of the latches 48 with their flank 49 and latching flank 50 seen in cross section. The thickness of the latching elements 86 corresponds to a thickness of the latching band 25. That only on the narrow side edges 87 with latching elements 86 Executed locking band 25 interacts with a locking clasp 35 specially designed for this purpose, the drive connection between the hollow cuboid locking clasp and the locking elements being effected by spring arms prestressed in the direction of the locking strap 25. The pretensioned spring arms can preferably be unlocked by a pressure movement applied in the direction of the locking band 25, the spring arms pivoting out and thus giving free movement of the locking band 25 in the locking clasp 35 in the direction of the locking band. Locking takes place only when the pressure on the spring arms is removed. In order to achieve a secure connection between the two coupling parts, it is expedient to design the latching elements and spring arms on both sides. However, it is also possible to provide only a one-sided catch arrangement.

Of course, the use of the embodiment variant of the connecting elements, as shown in FIGS. 7 and 8, is also possible in this embodiment.

In order to prevent a corresponding lateral tensile load or radial tensile load on the respiratory mask 3, it is also possible, for example, to inject metal parts or plastic holding parts with the holding frame 12, which protrude laterally beyond the boundary of the respiratory mask 3 and on which the pivot axis 22 is stored for the locking band 25. In this case, the bracket 30 can then be omitted.

Another embodiment of the connecting device 7 between the protective helmet 2 and the respiratory mask 3 is shown in FIGS. 11 and 12.

A connecting element 88 of the connecting device 7 consists of a coupling part 89 on the protective helmet 2 and a coupling part 90 which is connected in motion to the breathing mask 3.

The coupling part 89, as can also be seen better in particular in FIG. 12, is arranged in a recess on an outer side of the protective helmet shell 17 and consists of a pivotable folding arm 91 which has an axis 92 aligned approximately parallel to the outer surface of the protective helmet 2 Drawn in full lines, the rest position lying within a recess 93 of the surface of the protective helmet shell 17 can be adjusted into the pivoted-out position drawn in dashed lines. The axis 92 is in turn supported in a support part 94 which extends via a fastening element 95, the longitudinal axis 96 of which is approximately perpendicular to the protective helmet shell 17. is directed and around which the support member 94 can also be pivoted with the folding arm 91, but does not have to be attached to the protective helmet 2.

Due to a different distance 97 and 98 of a contact surface 99 of the folding arm 91 and the axis 92 as well as the axis 92 and a projection 100, the spring travel of a spring element 101, e.g. a leaf spring or a helical compression spring, between a shoulder of the fastening element 95 and an inside 102 of the protective helmet shell 17, a relative movement of the folding arm 91, from the rest position lying within the recess 93 into the hooking position for hanging a hook 103, for example against the spring action of the telescopically adjustable coupling part 90, which is rigidly or pivotably attached to the respirator 3.

In the rest position of the folding arm 91, the latter is located within the recess 93, so that the protective helmet 2 is prevented from becoming caught or hooked onto protruding parts.

If, on the other hand, the breathing mask 3 is to be connected to the protective helmet 2, the folding arm 91 is pivoted outward from the full line into the position shown in dashed lines and the hook 103 of the coupling part 90 is hung in an opening 104. The coupling part 90 can, for example, correspond to any type known from the prior art. It can thus consist of two telescopic parts which can be displaced in the longitudinal direction counter to a spring action. The firm fit of the respirator 3 on the face of the user is achieved in that the respirator can be anchored by means of catches provided on the coupling part 90 and arranged between the two parts which can be adjusted relative to one another, so that the telescopic effect of the coupling part 90 after the respirator mask has been firmly pressed on 3 is lifted on the face of the user and there is a rigid connection between the protective helmet 2 and the respiratory mask 3.

The remaining parts of the protective helmet 2 or respiratory mask 3 can be designed in the embodiment according to FIGS. 11 and 12 in accordance with the previously described embodiments, which is why the same reference numerals have been entered for the same parts and for a more detailed explanation and description of these parts in this embodiment is dispensed with.

The advantage of this solution is that when the connection device is not in use, 7 between the protective helmet 2 and the breathing mask 3, an almost smooth or flat outer surface of the protective helmet shell 17 is achieved without protruding parts, and when the folding arm 91 forming the coupling part 89 is pivoted out, this is also possible with a corresponding design of lateral, for example bead-shaped projections 105 is essentially within the outer boundary of the protective helmet shell 17, but the rotatable mounting of the folding arm 91 about the axis 92 achieves a mounting of the breathing mask 3 independent of height movements of the protective helmet and a more precise adaptation to different face lengths of the user between the protective helmet 2 and Respirator 3 is achievable.

In conclusion, it should be mentioned that, for better understanding of the solution according to the invention, individual parts are distorted purely schematically or to scale, or are enlarged or reduced disproportionately.

Individual features of the embodiment variants shown in the exemplary embodiments can also form independent solutions according to the invention, and individual features of the different exemplary embodiments according to FIG. 1; 2 to 5; 6; 7, 8; 9; 10; 11, 12 combined with each other or made the subject of their own protection claims.

B e z u g s z e i c h e n a u fs t e i l u n g

1 fireman 41 rand

2 hard hat 42 cross bar

3 respirator 43 push buttons

4 respirator 44 torsion spring

5 bottle 45 axis of rotation

6 steel tube 46 latch

7 connecting device 47 push button

8 flank area 48 notches

9 coupling part 49 flank

10 coupling part 50 locking flank

11 Viewing window 51 surface

12 mounting frame 52 helmet strap

13 sealing edge 53 support net

14 face 54 adjusting strap

15 regulator 55 neck pads

16 control valve 56 reinforcing element

17 protective helmet shell 57 structure-borne sound microphone

18 Support frame 58 adapter bracket

19 Adjustment device 59 Anchoring element

20 support plate 60 connecting element

21 rivets 61 connecting element

22 pivot axis 62 connecting element

23 hinge arrangement 63 tether

24 coupling part 64 opening

25 locking band 65 anchoring element

26 axis of rotation 66 bracket

27 chin strap 67 cable

28 visor 68 coil

29 Interior 69 opening

30 retaining bracket 70 drive shaft

31 attachment point 71 actuator

32 attachment point 72 swivel axis

33 Cantilever arm 73 arrow

34 coupling part 74 holding opening

35 locking clasp 75 locking hook

36 housing part 76 arrow

37 base 77 stop

38 legs 78 axis

39 legs 79 crossbar

40 end 80 spacers 81 position

82 arrow

83 distance

84 connecting element 85 recess

86 locking element

87 narrow side edge

88 connecting element 89 coupling part

90 coupling part

91 folding arm

92 axis 93 deepening

94 support part

95 fastener

96 longitudinal axis 97 distance

98 distance

99 contact surface 100 projection 101 spring element

102 inside

103 hooks

104 opening

105 head start

Claims

Patent claims

1. Protective helmet with a connecting device for the detachable fastening of a strapless respirator mask, which has two connecting elements, each of which is attached in the area of one of the two flank areas of the protective helmet facing the ears of a user and in one of the two side areas of the respirator mask, and each Connecting element is formed by two interlocking, detachable coupling parts, one of which

Coupling part on the protective helmet, preferably on a protective helmet shell and a further coupling part of the connecting device on the respirator mask, is characterized by the fact that the coupling part (9; 24, 34; 89) on the helmet side is connected to the flank areas (8) of the protective helmet shell ( 17) approximately vertically aligned pivot axis (22) in the protective helmet shell (17) and / or a support frame (18) and / or an inner helmet and that the helmet-side coupling part (9, 24; 34; 89) in the interior (29) of the Protective helmet (2) or sunk against an outside of the protective helmet shell (17) and / or in the direction of the pivot axis (22) is arranged to be adjustable in height relative to the outside.

2. Protective helmet according to claim 1, characterized in that the coupling part (9, 10; 24, 34; 89) has a predetermined length which can be preset, if appropriate, and is designed to be tensile.

3. Safety helmet according to claim 1 or 2, characterized in that at least one of the tensile coupling parts (9, 24) is limp.

4. Protective helmet according to one or more of claims 1 to 3, characterized in that at least one of the coupling parts (9, 24) is designed to be deformable about axes extending transversely to its longitudinal extension.

5. Protective helmet according to one or more of claims 1 to 4, characterized in that each of the coupling parts (9, 10; 24, 34; 89, 90) on the respirator (3) and / or the protective helmet (2nd ) or the support frame (18) or the inner helmet in the longitudinal direction of the connecting element is supported in a shear-resistant manner.

6. Protective helmet according to one or more of claims 1 to 5, thereby indicates that the two coupling parts (9, 10; 24, 34; 89, 90) are detachably fixed in their engagement position if necessary.

7. Protective helmet according to one or more of claims 1 to 6, characterized in that a coupling part (9, 24) by a locking band (25) and the other

Coupling part (10, 34) of the connecting device (7) is formed by a latch (35).

8. Protective helmet according to one or more of claims 1 to 7, characterized in that the notches (48) of the locking band (25) are aligned perpendicular to the longitudinal extent of the coupling part (9, 24) and approximately perpendicular to a longitudinal axis of the coupling part (9, 24) aligned latching flanks (50) of the latches (48) face the protective helmet (2).

9. Protective helmet according to one or more of claims 1 to 8, characterized in that the coupling part (9, 24) mounted on the protective helmet (2) has a rest position lying within a boundary line of the protective helmet (2).

10. Protective helmet according to one or more of claims 1 to 9, characterized in that the coupling part (10, 34) formed in particular by the latching clasp (35) on a in the longitudinal direction of the sealing edge (13) of the breathing mask ( 3) extending bracket (30) is attached.

11. Protective helmet according to one or more of claims 1 to 10, characterized in that the holding bracket (30) is connected to the respiratory mask (3) via two fastening points (31, 32) spaced apart in the longitudinal direction of the sealing edge.

12. Protective helmet according to one or more of claims 1 to 11, characterized in that a further connecting element (62) is preferably arranged in a symmetrical arrangement between the flank regions (8) of the protective helmet (2), perpendicular to the pivot axes (22) of the coupling parts (9, 24) running symmetry plane between a part of the respiratory protection mask (3) facing the user's forehead area and the protective helmet (2) is arranged (FIG. 6).

13. Protective helmet according to one or more of claims 1 to 12, characterized in that the breathing mask (3) associated with the coupling part (10, 34) is attached to the breathing mask (3) by means of at least one joint arrangement (23) which is arranged essentially parallel to the pivot axis (22) of the coupling part (9, 24) and has a pivot arrangement (23).

14. Protective helmet according to one or more of claims 1 to 13, characterized in that the coupling part (24) with an in particular variable length, flexible, tensile tensile element, e.g. a cable (67) is connected and the pulling element with its end facing away from the coupling part (24) has a tensioning device, e.g. a coil (68) is arranged.

15. Protective helmet according to one or more of claims 1 to 14, characterized in that the tensioning device has a protective helmet shell (17) in the flank region (8) of the protective helmet (2) approximately perpendicularly penetrating drive shaft (70) the coil (68) is arranged in the interior (29) enclosed by the protective helmet (2) and an actuating member (71) is arranged on the outside of the protective helmet (2), said actuator (71) around a pivot axis (perpendicular to the drive shaft (70)) 72) can be adjusted relative to the drive shaft (70) from an arresting position fixed between the stops (77) on the protective helmet (2) and into an actuating position suitable for rotating the coil (68) and arranged at an angle to the protective helmet shell (17).

16. Protective helmet according to one or more of claims 1 to 15, characterized in that the actuating member (71) in a relative to the surface of the protective helmet shell (17) in the direction of the interior of the protective helmet (2) (29) offset recess is.

17. Protective helmet according to one or more of claims 1 to 16, characterized in that the stops (77) for an actuating member (71) are formed by edges or edge zones of the recess.

18. Safety helmet according to one or more of claims 1 to 17, characterized in that the actuating member (71) is designed as a rocker arm.

19. Protective helmet according to one or more of claims 1 to 18, characterized in that the latching clasp (35) has a housing part (36) which is connected to the retaining bracket (30) and has an approximately U-shaped cross section, the two upstanding leg (38, 39) of the housing part (36) at least one end (40) along the central longitudinal plane of the same connects the two edges (41) of the two legs (38, 39) distanced from the base (37) transversely to the longitudinal axis of the profile-shaped housing part (36).

20. Protective helmet according to one or more of claims 1 to 19, characterized in that the housing part (36) supports a push button (43) which engages in its detent position in the catches (48) of the locking band (25) with the upper edge ( 41) the leg (38, 39) and / or the crossbar (42) is aligned.

21. Protective helmet according to one or more of claims 1 to 20, characterized in that the latching elements (86) on the narrow side edges (87) of a tensile band are arranged and the locking clasp (35) formed as a hollow cuboid in the narrow side edges (87 ) facing wall areas are provided with elastically deformable spring arms which are prestressed in the direction of the locking band (25).

22. Protective helmet according to one or more of claims 1 to 21, characterized in that the holding bracket (30) or a holding element of the locking clasp (35) is arranged in the transition region between the mounting frame (12) and a viewing window of the respiratory mask.

23. Protective helmet according to one or more of claims 1 to 22, characterized in that the latch clasp (35) on a mounting frame (12) of a viewing window (11) of the respiratory mask (3) e.g. is fastened by a shaping process.

24. Protective helmet according to one or more of claims 1 to 23, characterized in that the latching clasp (35) is arranged on a cantilever arm (33) projecting from the holding bracket (36).

25. Protective helmet according to one or more of claims 1 to 24, characterized in that the pivot axis (22) of the coupling part (24) on a Tragplat¬ te (20) is arranged on the support frame (18) and / or an inner helmet and / or the protective helmet shell (17) can be pivoted about an axis (78) which is spaced apart from the pivot axis (22) and that this support plate (20) is connected to the neck pad (55) or its holder by means of an expansion-resistant spacer (80) is (Fig. 9).

26. Protective helmet according to one or more of claims 1 to 25, characterized in that the support plate (20) in several directions extending radially to the axis (78) are connected via rigid spacers (80) with headrest supports.

27. Protective helmet according to one or more of claims 1 to 26, characterized in that a coupling part (10, 34) in particular a latching clasp (35) or a clamping clasp for a band-shaped connecting element (60, 61) via at least one pivot axis (22nd ) having a joint arrangement (23) is arranged or mounted on the outside of the protective helmet (2) in the flank region (8) (FIG. 10).