WO2024012919A1

WO2024012919A1 - Outer system for a protective helmet

Info

Publication number: WO2024012919A1
Application number: PCT/EP2023/068274
Authority: WO
Inventors: Georg Scharpenack; Nicolas FELLIN; Michal ORLOWSKI
Original assignee: Ulbrichts Gmbh
Priority date: 2022-07-15
Filing date: 2023-07-03
Publication date: 2024-01-18
Also published as: EP4305989A1

Abstract

The present invention relates to an outer system (11) for a protective helmet (1). The outer system comprises a first lateral rail (21) and a second lateral rail (22) which is opposite the first lateral rail (21) when the outer system (11) is mounted on the protective helmet (1). The first lateral rail (21) and the second lateral rail (22) each comprise at least one hook (38, 39). The outer system (11) also comprises at least one transverse connecting element (31, 32, 33), the at least one transverse connecting element (31, 32, 33) detachably connecting the first lateral rail (21) to the second lateral rail (22) when the outer system (11) is mounted on the protective helmet (1).

Description

External system for a safety helmet

1. Technical area

The present invention relates to an external system for a protective helmet, in particular a ballistic protective helmet or an impact protective helmet, as well as a corresponding protective helmet.

2. State of the art

Protective helmets, especially ballistic protective helmets and impact protection helmets, are used in a variety of ways by the police and military. They protect the wearer from head injuries caused by indirect or direct fire and splinters or from blunt head injuries caused by impacts.

Depending on the use, it is regularly necessary to attach accessories to the outside of a protective helmet. Such accessories include, for example, a visor, lighting, a night vision device, a camera or additional protective shields against direct fire from the front.

In the prior art, such accessories are attached to the protective helmet via rails or a so-called shroud, which is a front holder in the forehead area.

For example, WO 2019/195760 Ai shows a system for attaching helmet accessories that includes a shroud configured to connect to a helmet and an arm assembly with a first arm configured to be rotatable with which Shroud can be connected. The system includes an accessory interface configured to be coupled to an accessory and engageable with the arm assembly.

US 2006/282939 Ai further discloses a platform, referred to herein as a “mounting rail,” which accommodates one or more optional accessories for a protective helmet at desired locations and with positional security. The mounting rail is secured by means of five fasteners, two on each side and one at the front, which preferably penetrate the dome by means of through holes used together with corresponding retaining elements (not shown).

However, it is disadvantageous if fastening elements such as rails are attached to the spherical cap using screws, bolts or in a similar manner and penetrate it completely or partially. One finding underlying the present invention is that such bolts or screws penetrating the helmet cap reduce the protective effect of the helmet. When fired at, a bolt or screw can develop into a secondary projectile, which can seriously injure the head. Furthermore, the material of a bullet, although a solid, behaves like a liquid at high speeds and under the high pressures that occur upon impact. Upon impact, the bullet can therefore "run through" even small gaps between the bolt/screw and the hole or thread in the dome and thus directly seriously injure the wearer's head. Even if you are hit with a heavy object, bolts or screws can penetrate the dome and seriously injure your head.

In addition, as already mentioned, it is regularly necessary to attach certain accessories such as lighting, a night vision device and/or a camera to the outside of a protective helmet. Such accessories require that there be a connection to the protective helmet that is as rigid as possible. Otherwise, various disadvantages, some of which are safety-related, can result for the wearer of the protective helmet. For example, a night vision device that does not have a rigid connection to the protective helmet often only allows limited night vision. It is also common knowledge that a camera that is not guided stably will not enable accurate image capture. Systems that are known from the prior art often do not allow such a stable or rigid connection with accessories so that they can be used optimally.

In summary, it is therefore the object of the present invention to improve the protective effect of a protective helmet, to enable the interchangeability of accessories and also to enable a stable fixation of accessories. 3« Summary of the invention

This task is at least partially solved by the subject matter of the independent claims.

One aspect of the invention relates to an external system for a safety helmet. The protective helmet can be, for example, a ballistic protective helmet or an impact protective helmet.

The exterior system includes a first side rail and a second side rail disposed opposite the first side rail when the exterior system is mounted on the hard hat. The first and second side rails each have at least one hook. These hooks can each be designed so that they grip around an edge of a helmet cap of the protective helmet. In this way, the external system can be attached to the helmet cap in a simple manner without an element that penetrates into or penetrates the helmet cap.

The exterior system further includes at least one cross-connection element, wherein the at least one cross-connection element releasably connects the first side rail to the second side rail when the exterior system is mounted on the hard hat. This feature, according to which the at least one cross-connecting element releasably connects the first side rail with the second side rail in the assembled state, can mean, for example, that between the at least one cross-connecting element and the first side rail and between the at least one cross-connecting element and the second side rail There is a positive and/or non-positive connection. It has been shown that an external system, wherein at least one cross-connecting element connects the first side rail to the second side rail, enables a particularly stable or rigid attachment of the rails to a protective helmet. Particularly due to the direct power transmission between the two side rails. This enables a stable or rigid fixation of accessories. In addition, by using the at least one cross-connecting element that connects the first side rail to the second side rail, the number of necessary individual parts is kept low, whereby, for example, the assembly effort can be kept low.

The external system also has the advantage that accessories can be attached to a helmet cap without penetrating or penetrating the helmet cap Elements such as screws or bolts are possible, while still ensuring secure attachment of accessories. The external system therefore improves the protective effect of a protective helmet compared to the prior art.

The at least one cross-connecting element can be designed such that, when the external system is mounted on the protective helmet, it tensions the first and second side rails on a helmet cap. This has the advantage that the rails do not move undesirably. For example, in the assembled state of the external system, the hooks of the first and second side rails can each be pulled or tensioned to the edge of the helmet cap using the at least one cross-connecting element. It goes without saying that the at least one cross-connecting element must have tensile strength for this purpose. For example, the at least one cross-connecting element can have a tensile strength of at least 1000 MPa, preferably at least 2000 MPa, most preferably at least 2500 MPa (measured using a method customary in the art).

Furthermore, the at least one cross-connecting element can be designed so that it at least partially corresponds to the outer contour of a protective helmet. This makes it easy to install or put on the outdoor system. The at least one cross-connecting element is preferably designed in a U-shape. For example, the at least one cross-connecting element can comprise a punched sheet metal, which was then adapted to the outer shape of the protective helmet by bending.

Furthermore, the at least one cross-connecting element can, for example, have an elongation at break of at least 30%, preferably at least 50%. The elongation at break is the elongation value of the at least one cross-connecting element before a stress drop to less than or equal to 10% of the strength value occurs. This elongation at break ensures a good longevity of the at least one cross-connecting element, even with regular replacement of the first or second side rail or regular reassembly, e.g. for maintenance and cleaning purposes.

Within the scope of the present disclosure, the feature of a "cross-connection" as contained in the cross-connection element mentioned may refer to the cross-connection element substantially perpendicularly intersecting a vertex line of a hard hat when the external system is mounted on the hard hat. “Substantially” in the context of the present disclosure means that the exact geometric shape and/or description is not required, but rather deviations within general tolerances are also covered by the corresponding wording.

Furthermore, the phrases “when the external system is mounted on the protective helmet” and “in the mounted state of the external system” are to be considered equivalent within the scope of the present disclosure.

The described advantages of the invention have a particularly great effect on ballistic protective helmets and impact protection helmets. In particular, ballistic protective helmets and impact protection helmets also present completely different problems than is the case, for example, with lighter helmets, such as bicycle helmets or helmets such as those usually worn on construction sites. This means that there is no problem with secondary projectiles with these helmets. Concepts that are known from bicycle helmets or “construction site helmets” cannot therefore be easily transferred to ballistic protective helmets and impact protection helmets.

The at least one cross-connecting element can be a strip. A bar in the sense of the present disclosure can be an elongated element, the elongated element having a cross section whose dimensions are small relative to the length of the element. Preferably, the length of the elongated element is larger by a factor of 20 and further preferably by a factor of 80 relative to the dimensions of the cross section. Optionally, the bar has a substantially rectangular cross section, the cross section further optionally having a width to height ratio that is in the range of 2 to 15. More preferably, the ratio of width to height is in the range from 3 to 10. Rectangular cross sections and in particular the ratios mentioned have proven to be advantageous because they allow a flat surface to be rested on a helmet cap and are therefore particularly stable in position. This enables a stable or rigid attachment of the external system to a protective helmet. Accordingly, a stable or rigid fixation of accessories can be achieved.

However, the at least one cross-connecting element can also include a tension cable. A tension cable can have a substantially elliptical cross section. In particular, the tension cable can have a substantially circular cross section. Preferably, the at least one cross-connecting element is screwed to the first and/or the second side rail when the external system is mounted on the protective helmet. A screw connection has proven to be advantageous as it allows the external system to be easily adjusted to the safety helmet.

Preferably, when the external system is mounted on the protective helmet, the at least one cross-connecting element is screwed to the first and / or the second side rail using at least one screw and the at least one screw is arranged so that it can regulate a tensile force acting on the at least one cross-connecting element acts. This allows you to set exactly how firmly or stably the external system is mounted on the safety helmet. In addition, any loosening of the external system can be easily and quickly compensated for. For example, in one embodiment, in the assembled state of the external system, the hooks of the first and second side rails can be pulled or tensioned to the edge of the helmet cap with an adjustable force using the at least one cross-connecting element.

Preferably, when the external system is mounted on the protective helmet, the at least one cross-connecting element is screwed to the first side rail and the at least one cross-connecting element has at least one projection which engages in a form-fitting manner with the second side rail. For example, the at least one cross-connecting element can have two lateral projections at one end, so that a T-shaped end piece is formed. Accordingly, the second side rail can have an opening which, although it allows insertion of the at least one cross-connecting element, retains the side projections or the T-shaped end piece. By implementing the connection of the at least one cross-connecting element with the second side rail in a form-fitting manner, the security of the external system can be increased, since this reduces the number of elements that can develop into a secondary floor when attacked.

Furthermore, it is preferred if the external system is mounted on the protective helmet, the at least one cross-connecting element is screwed to the first side rail and the at least one cross-connecting element is connected to the second side rail by means of at least one rivet.

The two above options of connecting the at least one

Cross-connecting element with the first side rail and the second side Rails have the advantage that no adjustment, for example by means of a screw, has to be made between the at least one cross-connecting element and the second side rail, and therefore the adjustment and/or assembly of the external system is made easier.

The external system may further comprise a longitudinal element. The longitudinal member may be adapted to be disposed between the first and second rails when the external system is mounted on the hard hat. Furthermore, the longitudinal element can have at least one fastening element that is adapted to engage with the at least one cross-connecting element or an edge of a helmet cap. The fastening element can, for example, be a hook at one end of the longitudinal element, which is adapted to at least partially encompass the at least one cross-connecting element or an edge of a helmet cap. Preferably, the at least one longitudinal element extends in a direction that is substantially perpendicular to the at least one transverse connection element. For the purposes of the present disclosure, the feature “longitudinal” as included in the aforementioned longitudinal member may refer to the longitudinal member extending substantially parallel to an apex line of a hard hat when the external system is mounted on the hard hat. The longitudinal element can enable attachment of an appliqué along a crown line of a hard hat without the need for fasteners that penetrate the helmet dome and present potential secondary projectiles. It should be noted that the longitudinal element can include the above-described features of the at least one transverse connection element. For example, the longitudinal element can also be a strip.

Furthermore, the external system can include a front bracket. The front bracket can be a shroud. The front holder can be detachably attached to the longitudinal element and have at least one fastening means which is designed to positively engage with a helmet cap of the protective helmet. Accordingly, in the assembled state, the front bracket can be attached to the protective helmet by means of its fastening means and the fastening element of the longitudinal element. This allows the front bracket to be attached without the need for fasteners that penetrate or penetrate the helmet dome and present potential secondary projectiles. Preferably, the front holder is attached to the longitudinal element by at least one screw connection. This means that the screw connection can be used when the outdoor system is on Protective helmet is mounted, the force with which the front bracket is clamped between the helmet cap and the at least one cross-connecting element can be adjusted. The stability of the front bracket can thereby be improved. This is particularly advantageous because the position of a front is particularly important for particularly demanding applications. For example, in combat situations most fire comes from the front. The shroud can be used to attach another protective shield to significantly increase the bullet resistance of a protective helmet. For example, a night vision device, a lamp and/or a camera can also advantageously be attached to the front of the outdoor system.

The front holder or the shroud can comprise, as a fastening means, for example an element that is designed so that it surrounds an edge of a helmet cap of a protective helmet. Furthermore, the front holder or the shroud can have, for example, two hooks as fastening means. This has the advantage that the tipping stability and security against twisting to the side are improved. The at least two hooks can have a distance from each other that is relatively wide compared to the shroud width or the width of the front bracket. For example, the at least two hooks can have a distance of at least 20%, preferably at least 50%, most preferably at least 75% of the width of the shroud or the front holder. It is also possible to use just one hook. Preferably, this one hook has a width of at least 20%, preferably at least 50%, most preferably at least 75% of the width of the shroud or the front bracket. This is advantageous because it prevents the shroud or the front bracket from tipping to the side.

The at least one transverse connection element can form an overlap point with the longitudinal element. The external system can further comprise at least one position securing element, which is adapted to be arranged between the helmet cap and the overlap point and to fix the position of the overlap point relative to the helmet cap when the external system is mounted on the protective helmet. This allows the stability of the outdoor system to be further improved when installed. For example, the at least one position securing element can comprise a recess into which the at least one transverse connection element and the longitudinal element can be inserted, the recess preferably being configured such that the at least one transverse connection element and the longitudinal element are essentially vertical can be inserted to each other. Furthermore, the position securing element can comprise plastic, rubber, knobs and/or tips. It has been found that such position securing elements are less prone to slipping on the surfaces of protective helmets.

The first side rail, the second side rail, the at least one cross-connecting element and/or the longitudinal element may comprise a metal, the metal preferably being titanium. The use of metal improves the stability and especially the multi-hit capability of the outdoor system. It has been shown that even if the external system is hit by one or more projectiles, it can still reliably lock accessories. Titanium also has the advantage of being particularly light and durable.

However, it is also possible for the first side rail, the second side rail, the at least one cross-connecting element and/or the longitudinal element to comprise a polymer. This has the advantage that the individual components can be produced cost-effectively using injection molding. The polymer is advantageously non-flammable.

Furthermore, it is possible for the first side rail, the second side rail, the at least one cross-connecting element and/or the longitudinal element to comprise an organo-sheet. An organo sheet can include carbon fibers embedded in a polymer matrix. The polymer matrix may comprise a thermoplastic polymer. The polymer matrix may comprise a polyamide or polyetheretherketone. Organo sheets have the advantage of being multi-hit capable, especially due to the carbon fibers. Furthermore, it is possible to be able to mold on all holder receptacles. The carbon fibers can be woven. This has the advantage that resistance is further improved.

The exterior system may include a first cross-connection member, a second cross-connection member, and a third cross-connection member, wherein the first, second, and third cross-connection members each releasably connect the first side rail and the second side rail when the exterior system is mounted on the hard hat. Three cross-connecting elements have proven to be advantageous in that they enable a particularly stable hold of the outer system on a protective helmet without increasing the weight and/or complexity of the outer system, for example through additional cross-connecting elements. However, it is understood that protective helmets are subject to special loads are used, may also require more than three cross-connecting elements. Furthermore, the use of three cross-connection elements allows for a pronounced multi-hit protection, i.e. even if a protective helmet is hit by several projectiles and two of the three cross-connection elements are destroyed, the outer system basically continues to hold on to the helmet cap, meaning that the attachment has a certain redundancy having. The external system therefore improves the protective effect of a protective helmet compared to the prior art.

Preferably, when the external system is mounted on the protective helmet, the first cross-connection element is attached to a rear end of the first side rail and to a rear end of the second side rail, the third cross-connection element is attached to a front end of the first side rail and to a front end of the second side rail attached, and the second cross-connecting element arranged between the first cross-connecting element and the third cross-connecting element. This arrangement ensures a particularly secure hold of the external system in a helmet dome.

The first side rail, the second side rail, and/or the front bracket may include a bracket for an application. The holder allows the attachment of accessories (applications) such as (and not limited to) a lamp, a camera, a visor, an additional protective shield or a night vision device.

The first and second side rails can each have at least two hooks, preferably at least one of the hooks having a U-shaped profile. Two hooks on each side rail have proven to be advantageous in that the external system can be attached to a helmet cap in a particularly stable manner. A U-shaped profile in particular enables a firm hold on the helmet cap, even during quick movements. Furthermore, two hooks allow a helmet cap to be gripped in front of and behind ear protection. This is advantageous because the ear protection of helmets can vary depending on the application and the external system is therefore independent of the design of the ear protection.

Further, a first of the at least two hooks of the first side rail may protrude from the front end of the first side rail and a second of the at least two hooks of the first rail may protrude from the rear end of the first side rail. A first of the at least two hooks can also be used second side rail protrude from the front end of the second side rail and a second of the at least two hooks of the second side rail may protrude from the rear end of the second side rail. This arrangement ensures that there is as much space as possible for attaching accessories to the rail without compromising their hold on a spherical cap. In particular, accessories with a relatively high weight can be mounted in any position.

The first and second side rails may each have at least one embossment, the embossment protruding outwardly when the outer system is mounted on the hard hat, the embossment having a substantially flat surface, and the embossment facing the adjacent and non-embossed one The area of the respective rail stands out in a wedge shape. The essentially flat surface of the at least one embossing can be used to mount a visor adapter to which a visor can be releasably attached. The wedge shape allows an inclination of the first side rail to the second side rail to be at least partially compensated for, so that a simpler (geometrically less complex) design of the visor adapter is possible.

A further aspect of the invention relates to a protective helmet comprising a helmet cap and an external system, as described above, wherein the at least one hook of the first side rail and the at least one hook of the second side rail of the external system each encompass an edge of the helmet cap.

The protective helmet according to the invention combines all of the advantages of the external system described above with a helmet cap, so that the advantages described above also apply to the protective helmet.

The helmet cap can include titanium, titanium-PE, titanium-aramid, PE-aramid, PE, and / or a PE-carbon-aramid material. PE stands for polyethylene. These materials are light and durable. The external system can be attached to the dome without an element entering or penetrating the dome. A penetrating or penetrating element can be, for example, a screw or a bolt. This can develop into a secondary projectile under fire and seriously injure the wearer's head. Even under impact, an penetrating or penetrating element can injure the head. Furthermore, the material of a bullet, although a solid, behaves like a liquid at high speeds and under the high pressures that occur upon impact. The bullet can Therefore, in the event of an impact, it can "run through" even small gaps between the bolt/screw and the hole or thread in the dome and thus directly seriously injure the wearer's head. The invention therefore significantly improves the protective effect of the protective helmet.

It is to be understood that the outdoor system of the present invention is fundamentally interchangeable. In particular, the external system can be used on various helmet caps. This makes it possible to combine the advantages of the external system with the advantages of certain helmet caps. For example, in low-risk situations, the external system according to the invention could be used with a lighter helmet cap, while in situations with a particularly high risk situation, the external system according to the invention could be used with a heavy helmet cap. Existing helmets can also be easily retrofitted with the external system according to the invention.

4. Brief description of the characters

Fig. 1 shows a view from above of a protective helmet according to the invention,

Fig. 2 shows a side view of the protective helmet according to the invention,

Fig. 3 shows a front view of the protective helmet according to the invention,

Fig. 4 shows a rear view of the protective helmet according to the invention,

5 shows side views of protective helmets according to the invention,

6 shows a view from above of an exemplary cross-connecting element,

7 shows an exemplary right side rail,

8 shows an exemplary left side rail,

9A shows an exemplary connection of the right side rail with an exemplary cross-connection element in a side sectional view,

9B shows the exemplary connection of the right side rail with an exemplary cross-connection element in a top view,

10A shows an exemplary connection of the left side rail with an exemplary cross-connection element in a side sectional view, Fig. ioB shows the exemplary connection of the left side rail with an exemplary cross-connecting element in a sectioned plan view,

10C shows an exemplary connection of the left side rail with an exemplary cross-connection element in different views,

Fig. ii shows a view from above of an exemplary longitudinal element,

12 shows an exemplary screw connection of the front bracket to the longitudinal element in a side sectional view,

13 shows a view from above of an exemplary position securing element,

Fig. 14 shows exemplary rail segments according to a first variant and according to a second variant, and

Fig. 15 shows a rear view of a protective helmet according to the invention according to a further embodiment.

5. Detailed description of the characters

The figures show exemplary protective helmets, external systems and their components. Some figures only show certain parts of the external system or the protective helmet.

Fig. 1 shows a protective helmet 1 according to the invention with an external system 11. The external system 11 comprises a first side rail 21, which is arranged on the left side of the protective helmet 1. The external system 11 further comprises a second side rail 22, which is arranged on the right side of the protective helmet 1. The second side rail 22 is arranged opposite the first side rail 21. In addition, the first 21 and the second 22 side rails each have two hooks 38, 39, as can be seen in FIGS. 2, 3 and 4. In addition, the external system includes three cross-connecting elements 31, 32, 33, the three cross-connecting elements 31, 32, 33 each releasably connecting the first side rail 21 to the second side rail 22. Where necessary for the description of the figures, the cross-connection element 31 is referred to as the first cross-connection element 31, the cross-connection element 32 as the second cross-connection element 32 and the cross-connection element 33 as the third cross-connection element 33.

The protective helmets 1 shown in FIGS. 1 to 5 each include a helmet cap 16 and an external system 11, the two hooks 38, 39 of the first side rail 21 and the two hooks 38, 39 of the second side rail 22 of the outer system 11 each encompass an edge of the helmet cap 16.

1 to 4 and 6 show that the three cross-connecting elements 31, 32, 33 are strips, the strips having a rectangular cross section. It goes without saying that the cross-connecting element 31, 32, 33 shown in FIG. 6 is not shown bent for the sake of clarity.

Furthermore, it can be seen from FIG. 1 that the three cross-connecting elements 31, 32, 33 are each screwed to the first side rail 21. To connect the three cross-connecting elements 31, 32, 33 to the first side rail 21, one screw 35a, 35b, 35c is used for each cross-connecting element 31, 32, 33. Corresponding screw connections are shown in detail in FIGS. 10A, 10B and 10C. In particular, it can be seen from these illustrations that the cross-connecting elements 31, 32, 33 are each screwed to the first side rail 21 using a screw 35a, 35b, 35c, which is arranged so that it can regulate a tensile force acting on the corresponding one Cross-connecting element 31, 32, 33 acts. In detail, the cross-connecting elements 31, 32, 33 and the first side rail 21 each have sections that are bent outwards (i.e. away from the protective helmet 1). These sections are essentially parallel so that the screws 35a? 35b, 35c can be passed vertically through corresponding holes in the sections. The screws 35a, 35b, 35c thus run essentially parallel to the areas of the cross-connecting elements 31, 32, 33 and the first side rail 21, which adjoin the outwardly bent sections. This means that the screws 35a, 35b, 35c can each regulate the tensile force that acts on the corresponding cross-connecting element 31, 32, 33.

A cover 80 is arranged above the screws 35a, 35b, 35c, which ensures that the screw connection can be adjusted.

As already mentioned and shown in FIG. 1, the three cross-connecting elements 31, 32, 33 are each screwed to the first side rail 21. 6 and 7, the cross-connecting elements 31, 32, 33 each have two projections 34a, 34b, which engage in a form-fitting manner with openings or slots 28a, 28b, 28c of the second side rail 22, if that Outdoor system is assembled. In detail, the cross-connecting elements 31, 32, 33 have two lateral projections 34a, 34b at one end, so that a T-shaped end piece is formed. The second side rail 22 has corresponding openings or Slots 28a, 28b, 28c, which allow the cross-connecting elements 31, 32, 33 to be inserted, but retain the lateral projections 34a, 34b or the T-shaped end piece. This positive engagement is shown in Figures 9A and 9B.

As can be seen in particular in FIGS. 1, 3 and 4, the external system 11 mounted on the protective helmet 1 further comprises a longitudinal element 37, which is shown in the non-bent state in FIG. 11 for the sake of clarity. In the assembled state (see FIGS. 1 to 4), the longitudinal element 37 is arranged between the first 21 and the second 22 rail and extends essentially parallel to a vertex line of the protective helmet 1.

4 and 11 also show that the longitudinal element 37 has a fastening element 70 which, in the assembled state (see FIG. 4), engages with a cross-connecting element 31. In detail, the fastening element 70 surrounds the cross-connecting element 31, which is closest to a back of the head region 3 of the protective helmet 1, so that a displacement of the longitudinal element 37 in the direction of a forehead region 2 of the protective helmet 1 is prevented.

Furthermore, it is shown in Figures 1, 3, 4 and 11 that the longitudinal element is a strip, the strip having a rectangular cross section. Furthermore, the longitudinal element 37 extends in a direction that is essentially perpendicular to the three transverse connecting elements 31, 32, 33.

1, 2 and 3, the external system 11 also includes a front bracket 40. This front bracket 40 is detachably attached to the longitudinal element 37 and has a fastening means 41 which engages in a form-fitting manner with the helmet cap 16 of the protective helmet 1 . In Fig. 2, the area in which the fastening means is located is designated, although it is not shown how the fastening means 41 engages in a form-fitting manner with the helmet cap 16 of the protective helmet 1.

1, 11 and 12 also show that the front bracket 40 is fastened to the longitudinal element 37 by two screws 60a, 60b. The use of two screws increases the stability of the front bracket 40. In particular in Fig. 12 it is shown that the longitudinal member 37 is screwed to the front bracket 40 using the two screws 60a, 60b, which are arranged to provide a tensile force can regulate, which acts on the longitudinal element 37 when the external system 11, as shown, is mounted on the protective helmet 1. This allows accurate how firmly or stable the external system and in particular the front bracket is mounted on the safety helmet can be adjusted.

As shown in FIGS. i and 3, both the cross-connecting element 32 and the cross-connecting element 33 form an overlap point with the longitudinal element 37. The external system 11 further comprises two position securing elements 50a, 50b, which are each arranged between the helmet cap 16 and the overlap point and fix the position of the overlap point relative to the helmet cap 16. A detailed view of a corresponding position securing element 50a, 50b is shown in FIG. 13. The position securing element 50a, 50b shown comprises a recess into which the cross-connecting element 32, 33 and the longitudinal element 37 can be inserted, the recess being configured such that the cross-connecting element 32, 33 and the longitudinal element 37 can be inserted perpendicular to one another.

In Fig. 1 and Fig. 2 it is shown that the first cross-connection element 31 is attached to a rear end of the first side rail 21 and to a rear end of the second side rail 22, with the third cross-connection element 33 at a front end of the first side rail Rail 21 and attached to a front end of the second side rail 22, and wherein the second cross-connection element 32 is arranged between the first cross-connection element 31 and the third cross-connection element 33.

Furthermore, as shown in FIGS. 1 and 2, the first side rail 21 and the second side rail 22 each include two holders 25a, 25b for an application. Corresponding holders or rail segments 25a, 25b are shown in detail in FIG. 14. These rail segments 25a, 25b make it possible to attach various modular accessories to the first side rail 21 and the second side rail 22. The rail segments 25a, 25b each have a latching section 26a, 26b for the corresponding side rail 21, 22 and, on an opposite side of the rail segment, a latching section 27a, 27b for accessories. According to the first variant 25a, the latching section 27a for accessories has a large number of notches. According to the second variant 25b, the latching section 27 for accessories has a large number of projections. In an alternative embodiment, the rail segments 25a, 25b are integrally formed. This allows the number of individual parts to be reduced. As can be seen in FIGS. 7 and 8, the first side rail 21 and the second side rail 22 each include a rail holder 24a, 24b which serve to fasten the rail segments 25a, 25b. The rail mounts 24a, 24b are adapted to engage the latching portions 26a, 26b.

3, 4, 7 and 8 in particular show that the first 21 and the second 22 side rails each have two hooks 38, 39. As shown in the front view of the protective helmet 1 in Fig. 3, the helmet cap 16 has an L-shaped outer shape 18 in the area of the first hook 38, the first hook 38 sitting in the L-shaped outer shape 18, so that it is particularly secure holds on the calotte 16. As shown in the rear view of the protective helmet 1 in FIG. 4, the helmet cap 16 has an edge 19 in the area of the second hook 39, which the second hook 39 engages behind, so that it also sits securely. In principle, however, no special design of the dome is required. Numerous possible structures come into consideration. Only the first 38 and second 39 hooks must be designed in such a way that they can grip around one edge of the dome. This already ensures a secure hold. It is possible that the first 38 and second 39 hooks are bendable and can thus be adapted even better to the dome, for example using pliers.

2, 7 and 8 that a first 38 of the two hooks 38, 39 of the first side rail 21 protrudes from the front end of the first side rail 21 and a second 39 of the at least two hooks 38, 39 of the first rail protrudes from the rear end of the first side rail 21. Accordingly, it is shown that a first 38 of the at least two hooks 38, 39 of the second side rail 22 protrudes from the front end of the second side rail 22 and a second 39 of the at least two hooks 38, 39 of the second side rail 22 protrudes from the rear end the second side rail 22 protrudes.

The design of the hooks 38, 39 described above allows the helmet cap 16 to be gripped in front of and behind the ear protection 4, as shown, for example, in FIG. 2. This is advantageous because the external system 11 can be mounted independently of the design of the ear protection 4, as can be seen from FIG. 5.

Furthermore, it can be seen in FIG. 3 that the first 21 and the second 22 side rails each have an embossing 23 which protrudes outwards, whereby the Embossing 23 has a substantially flat surface (see FIGS. 7 and 8) and stands out in a wedge shape compared to the adjacent and non-embossed area of the respective rail 21, 22.

A blind module 29 is arranged on each of the embossings 23 in FIG is needed and therefore part of the rails 21, 22 is exposed. In addition, the blind module 29 also serves to protect a visor adapter against damage in the event of an impact on or with a hard object such as rock, stone, metal object or similar.

3, the external system 11 further comprises a first securing element 42a, which connects the front bracket 40 to the first side rail 21, and a second securing element 42b, which connects the front bracket 40 to the second side rail 22. These securing elements 42a, 42b serve to additionally secure, for example, a night vision device mounted on the front holder or shroud 40. If the night vision device were to accidentally become detached from the shroud 40, it would fall to the ground and possibly be damaged without the securing elements 42a, 42b, which can include a band, a strap, or an expander cable. The securing elements 42a, 42b prevent the night vision device from being damaged. It is possible for the securing elements 42a, 42b to each comprise an element molded using the injection molding process, which engages with a recess in the first side rail 21 or the second side rail 22. Alternatively, the securing elements 42a, 42b can each comprise a fastening element with which a band, a strap or an expander cable engages in a form-fitting manner and which comes into engagement with a recess in the first side rail 21 or the second side rail 22.

Fig. 15 shows a rear view of a protective helmet 1 according to the invention according to a further embodiment. As can be seen, the external system 11 comprises a longitudinal element 37, the longitudinal element 37 being arranged between the first and second rails. The longitudinal element 37 has a fastening element 70 which engages with an edge of the helmet cap 16. 15 also shows that the longitudinal element 37 is made wider in the area of the fastening element 70. In detail, the longitudinal element 37 is at least in the area of the fastening element 70 about twice as wide. This enables a more stable attachment of the longitudinal element 37 to the protective helmet 1 or the helmet cap 16. Furthermore, it can be seen in FIG. 15 that the first transverse connecting element 31 forms an overlap point with the longitudinal element 37. The external system 11 includes a position securing element 50c, which is arranged between the helmet cap 16 and the overlap point and fixes or at least stabilizes the position of the overlap point relative to the helmet cap.

Reference symbol:

Hard hat

forehead area

3 back of the head area

4 ear protection

11 outdoor system

16 helmet cap

18 L-shaped external shape

19 edge

21 First side rail

22 Second side rail

23 embossing

24a, 24b rail holder

25a, 25b rail segment

26a, 26b latching section for the rail

27a, 27b snap-in section for accessories

28a, 28b, 28c openings/slots

29 dummy module

31 first cross-connecting element

32 second cross-connecting element

33 third cross-connecting element 34a, 34b lateral projections

35a, 35b, 35C screws

37 longitudinal element

38 First hook 39 Second hook

40 front bracket/shroud

41 fasteners

42a, 42b security elements

50a, 50b, 50c position securing elements 60a, 60b screws

70 fastener

80 cases

Claims

Expectations

1. External system (s) for a protective helmet (1), comprising: a first side rail (21), a second side rail (22) which is arranged opposite the first side rail (21) when the external system (11) is on Protective helmet (1) is mounted, the first (21) and the second (22) side rail each having at least one hook (38, 39), and at least one cross-connecting element (31, 32, 33), the at least one cross-connecting element ( 31, 32, 33) detachably connects the first side rail (21) to the second side rail (22) when the external system (11) is mounted on the protective helmet (1).

2. External system (11) according to the preceding claim, wherein the at least one cross-connecting element (31, 32, 33) is a strip, the strip preferably having a substantially rectangular cross section, the cross section further preferably having a ratio of width to height , which ranges from 2 to 15.

3. Outdoor system (11) according to one of the preceding claims, wherein the at least one cross-connecting element (31, 32, 33) is screwed to the first (21) and / or the second (22) side rail when the outdoor system (11) is on Protective helmet (1) is mounted.

4. External system (11) according to one of the preceding claims, wherein, when the external system (11) is mounted on the protective helmet (1), the at least one cross-connecting element (31, 32, 33) with the first (21) and / or the second (22) side rail is screwed using at least one screw (35a, 35b, 35c) and the at least one screw (35a, 35b, 35c) is arranged so that it can regulate a tensile force acting on the at least one cross-connecting element (22) 3L 32, 33) works.

5. External system (11) according to one of the preceding claims, wherein, when the external system (11) is mounted on the protective helmet (1), the at least one cross-connecting element (31, 32, 33) with the first side rail

(21) is screwed and the at least one cross-connecting element (31, 32, 33) has at least one projection (34a, 34b) which is connected to the second side rail

(22) engages in a form-fitting manner, or wherein, when the external system (11) is mounted on the protective helmet (1), the at least one cross-connecting element (31, 32, 33) is screwed to the first side rail (21) and the at least one cross-connecting element ( 31, 32, 33) is connected to the second side rail (22) by means of at least one rivet.

6. External system (11) according to one of the preceding claims, comprising a longitudinal element (37), wherein the longitudinal element (37) is adapted to be arranged between the first (21) and the second (22) rail when the external system is on the protective helmet (1) is mounted, and wherein the longitudinal element (37) has at least one fastening element (70) which is adapted to engage with the at least one cross-connecting element (31) or an edge of a helmet cap (16), the at least one longitudinal element (37) preferably extends in a direction that is substantially perpendicular to the at least one cross-connecting element (31).

7. Outdoor system (11) according to the preceding claim, comprising a front bracket (40), the front bracket (40) being releasably attached to the longitudinal member (37) and having at least one fastening means (41) adapted to the helmet cap (16) of the protective helmet (1) to engage in a form-fitting manner, the front holder (40) preferably being fastened to the longitudinal element (37) by at least one screw connection (60a, 60b).

8. External system (11) according to one of claims 6 or 7, wherein the at least one cross-connecting element (31, 32, 33) forms an overlap point with the longitudinal element (37), and the external system (11) further comprises at least one position securing element (50a, 50b ), which is adapted to be arranged between the helmet cap (16) and the overlap point and to fix the position of the overlap point relative to the helmet cap (16) when the external system (11) is mounted on the protective helmet (1). 9- Outdoor system (ii) according to one of the preceding claims, wherein the first side rail (21), the second side rail (22), the at least one cross-connecting element (31) and / or the longitudinal element (37) comprise a metal, wherein the Metal is preferably titanium.

10. External system (11) according to one of the preceding claims, comprising a first cross-connection element (31), a second cross-connection element (32) and a third cross-connection element (33), the first (31), the second (32) and the third ( 33) Cross-connecting element releasably connects the first side rail (21) and the second side rail (22) when the external system (11) is mounted on the protective helmet (1).

11. Outdoor system (11) according to the preceding claim, wherein, when the outdoor system (11) is mounted on the protective helmet (1), the first cross-connection element (31) at a rear end of the first side rail (21) and at a rear end of the second side rail (22), the third cross-connecting element (33) is attached to a front end of the first side rail (21) and to a front end of the second side rail (22), and the second cross-connecting element (32) between the first cross-connecting element (31) and the third cross-connecting element (33) are arranged.

12. Outdoor system (11) according to one of the preceding claims, wherein the first (21) and the second (22) side rail each have at least two hooks (38, 39), preferably at least one of the hooks (38, 39) having a U -shaped profile.

13. Outdoor system (11) according to the preceding claim, wherein a first (38) of the at least two hooks (38, 39) of the first side rail (21) protrudes from the front end of the first side rail (21) and a second (39 ) the at least two hooks (38, 39) of the first rail protrude from the rear end of the first side rail (21); wherein a first (38) of the at least two hooks (38, 39) of the second side rail (22) protrudes from the front end of the second side rail (22). and a second (39) of at least two hooks (38, 39) of the second side rail (22) protrudes from the rear end of the second side rail (22).

14. External system (11) according to one of the preceding claims, wherein the first (21) and the second (22) side rail each have at least one embossing (23), the embossing (23) protruding outwards when the external system (11 ) is mounted on the protective helmet (1), the embossing (23) having a substantially flat surface, and the embossing (23) standing out in a wedge shape compared to the adjacent and non-embossed area of the respective rail (21, 22).

15. Protective helmet (1) comprising: a helmet cap (16), and an external system (11) according to one of the preceding claims, wherein the at least one hook (38, 39) of the first side rail (21) and the at least one hook (38 , 39) of the second side rail (22) of the outer system (11) each grip around an edge of the helmet cap (16).