EP4114223A1

EP4114223A1 - Protective helmet

Info

Publication number: EP4114223A1
Application number: EP21710450.4A
Authority: EP
Inventors: Karsten Lübke; Michél SCHRADE; Michael Jarisch
Original assignee: Schuberth GmbH
Current assignee: Schuberth GmbH
Priority date: 2020-03-06
Filing date: 2021-03-05
Publication date: 2023-01-11
Anticipated expiration: 2041-03-05
Also published as: US20230018883A1; EP4114223C0; DE102020106096A1; WO2021176061A1; EP4114223B1; CN115426911A; ES2967473T3

Abstract

The invention relates to a protective helmet with an outer shell (1) for distributing impact forces, with a head support ring (2) for placing on a head of a wearer of the protective helmet, and with an adjustment device (3) for adjusting a circumference of the head support ring (2) in order to adapt the latter to the head of the wearer, wherein the adjustment device (3) is guided through an opening of the outer shell (1) so as to be operated from outside the outer shell (1). The protective helmet according to the invention is characterized in that the adjustment device (3) is designed to tension a spring device (8), during the adjustment of the circumference, in such a way that the tension of the spring device (8) acts to transfer the head support ring (2) to a basic circumference.

Description

Hard hat

The invention relates to a protective helmet with the features of the preamble of claim 1.

Protective helmets, especially for use by the police or other emergency services, are primarily used to protect the wearer from the risk of mechanical injury. As with other types of helmets, there is also the need for protective helmets to allow wearers with different head sizes to wear the helmet safely, at least in a certain range of sizes. One difficulty is that such a circumferential fit regularly requires the setting of an interior of the protective helmet, which is naturally arranged under the fixed outer shell of the protective helmet. The outer shell makes it difficult or impossible to access the interior fittings underneath.

The American patent US 7,870,617 B2 from the prior art shows a sports helmet with an interior whose fit can be adjusted by flexible straps. These straps are passed through openings in a rear area of the outer shell and can therefore also be adjusted and lashed when the sports helmet is worn. A cover plate is provided, which is then attached from the outside to the outer shell to cover the openings and the tapes passed through.

The disadvantage of this prior art is that removing the sports helmet is tedious and time-consuming for the wearer. This is especially true if the carrier is supposed to do this on his own. As already stated, it makes sense to adapt the interior fittings to the head circumference of the wearer after putting on the helmet. In return, it is useful for removing the helmet to enlarge the circumference of the interior fittings before it is removed and to detach the interior fittings from the head of the wearer. In the case of this sports helmet, however, this is only possible with difficulty, since for this the wearer first has to loosen the cover plate fastened in the back of the head area of the outer shell.

A reliably rapid withdrawal is almost complete. Based on this prior art, the object of the invention is therefore to provide a protective helmet that can be adapted to different head circumferences of the wearer while the helmet is being worn and on the other hand also reliably a quick release of this adaptation by the wearer to remove of the protective helmet.

This object is achieved for a protective helmet with the features of the preamble of claim 1 by the features of the characterizing part of claim 1.

Essential for the invention is the knowledge that by providing a spring device in the protective helmet, which spring device is tensioned by adjusting the head circumference of the protective helmet for the respective wearer in such a way that it acts on a return to the basic setting, a quick removal of the protective helmet is also made possible by the carrier alone. A release mechanism can then be provided, by means of which and the tension of the spring device, the safety helmet can be quickly converted into this basic setting and thus the safety helmet can be conveniently removed. As a rule, the basic setting is the setting for the maximum head circumference, so that in this basic setting the protective helmet usually only sits loosely on the wearer's head.

The proposed protective helmet has an outer shell for distributing impact forces, a head support ring for placing on a head of a wearer of the protective helmet and an adjustment device for adjusting a circumference of the head support ring for adaptation to the head of the wearer, the adjustment device through at least one opening in the outer shell for operation from outside the outer shell. For guiding the adjusting device through the at least one opening in the outer shell, it is sufficient that only part of the adjusting device is guided through the at least one opening. Outside of the outer shell here means that side of the outer shell which faces away from the head of the wearer of the protective helmet. The head support ring is basically any arrangement by means of which the protective helmet is at least partially supported on the head of the wearer and which rests against a circumference of the head of the wearer. In particular, the protective helmet according to the proposal can be a protective helmet for emergency personnel. These forces can be security forces such as the police or the military, as well as firefighters.

The protective helmet according to the proposal is characterized in that the adjustment device is set up to tension a spring device of the protective helmet when adjusting the circumference in such a way that the tension of the spring device acts to convert the circumference of the head support ring into a basic circumference. In other words, the spring device can be tensioned by actuating the adjustment device - that is, by adjusting the circumference of the head support ring - in such a way that this tension forces the head support ring into a state in which the circumference of the head support ring assumes the basic size. This basic circumference of the head support ring preferably corresponds to a maximum circumference of the head support ring. A reduction in the circumference of the head support ring starting from the maximum circumference then generates a tension in the spring device, which tension acts in the direction of a return to the maximum circumference. Accordingly, it is preferred that the adjustment device is set up to reduce the circumference of the head support ring starting from the base circumference.

In principle, it can be the case that the spring device has no preload if the circumference of the head support ring is the same as the basic circumference, the basic circumference thus in particular corresponding to the maximum circumference. Then he testifies only the setting of a different from the basic scope To catch by the setting device a bias of the spring device. However, it is preferred that the spring device has a preload when the circumference of the head support ring is the same as the basic circumference. In other words, there is already a preload in the basic state of the head support ring. In this way it is ensured that the spring device already has a certain preload in the maximum setting so that the maximum range is actually safely reached - regardless of friction losses. A reduction in the circumference of the head then does not produce a preload, but also increases an existing preload. It may be that the at least one opening in the outer shell has a multiplicity of openings in the outer shell. It can also be the case that the at least one opening in the outer shell is precisely one opening in the outer shell.

In principle, the above adjustment device can be realized in any way. A preferred embodiment of the protective helmet according to the proposal is characterized in that the adjusting device has a button for adjusting the circumference by means of a rotary actuation, which button can be rotated from outside the outer shell. Thus, the Drehbetäti supply for adjusting the circumference can be made from outside the outer shell.

The rotatability from outside the outer shell can be achieved in different ways. In particular, it can be the case that the button is passed through the at least one opening. Another possibility is explained below.

In principle, the at least one opening can be at least one opening of any type. Another preferred embodiment of the protective helmet according to the proposal is characterized in that the at least one opening has a bore completely surrounded by the outer shell. In particular, it can be that the at least one opening consists of at least one bore completely surrounded by the outer shell. A bore is therefore to be understood as an opening with a closed edge. In particular, a hole is not a notch-like incision. In principle, the at least one opening can be arranged in any position of the outer shell. However, it is preferred that the at least one opening is arranged on a rear side of the outer shell.

According to a preferred embodiment of the protective helmet according to the proposal, it is provided that the adjustment device has a cable arrangement, the cable arrangement being designed to exert a pulling action on the head support ring to adjust the circumference. In particular, it can be that the cable arrangement is set up to exert a pulling action on the head support ring in order to reduce the circumference. Preferably the rope arrangement is coupled with the button. In principle, the cable arrangement can react to any type of actuation of the button. It is particularly preferred that the cable arrangement is set up to exert the pulling operation on the head support ring for adjusting the circumference by rotating the knob.

According to a further preferred embodiment of the protective helmet according to the proposal, it is provided that the adjustment device is set up to reduce a cable length of the cable arrangement by winding up the cable arrangement in order to adjust the circumference of the head support ring. The rope length of the rope arrangement reduced in this way is not the total length of the rope arrangement as a whole, since this cannot be changed in principle without severing a part of the rope arrangement. Rather, the rope length to be reduced is meant to be the extended rope length. The extended rope length is therefore that part of the rope arrangement which is not wound up.

A preferred embodiment of the protective helmet according to the proposal is characterized in that the cable arrangement is guided through the at least one opening. Since the cable arrangement regularly has a smaller diameter than the button, the at least one opening can be made very small in this way, which in turn affects the integrity of the outer shell as little as possible. It is further preferred here that the button is arranged outside the outer shell.

In principle, the head support ring can be designed as desired. Another preferred embodiment of the proposed protective helmet is characterized in that the head support ring has two guide parts which are designed to be displaced against one another in order to adjust the circumference of the head support ring. In particular, it can be that the guide parts form at least partially the circumference of the head support ring. Such a shift to one another can adjust the part of the circumference formed by the two guide parts, since overlapping areas of the guide parts only simply contribute to the circumference. It is also preferred that the guide parts are flexible. Flexible guide parts are easier to bring into an overlap to form a perimeter than rigid guide parts. It is also preferred that the head support ring has a holding arrangement for leading the Has guide parts. Here it can also be that at least one guide part has the holding arrangement and that the holding arrangement is set up for mutual engagement of the guide parts. In this way it can be ensured that the guide parts remain in overlap.

According to a preferred embodiment of the protective helmet according to the proposal, it is provided that the adjustment device and in particular the cable arrangement are set up to move the guide parts against one another in order to adjust the circumference. Such a shift against one another can be accomplished comparatively easily by exerting a tensile force on the guide parts. It is also preferred that the guide parts have a respective guide opening, the guide openings being at least partially aligned with one another and thereby forming an overall opening. The overall opening is therefore that opening which corresponds to the overlapping area of the two guide openings. The area of the overall opening is then preferably adapted by adjusting the circumference of the head support ring. It is obvious that the overall opening regularly has a larger area, the higher the degree of overlap between the guide parts and the guide openings.

In principle, the spring device can be placed anywhere and coupled with the other components of the protective helmet. According to a further preferred embodiment of the protective helmet it is provided that the Federvorrich device is connected to the guide parts and is set up to exert a tension of the spring device as a spring force on the guide parts. In other words, the spring device exerts through its connection with the guide parts, the stronger the spring force on the guide parts, the more the spring device is tensioned. In particular, it may be that the Federvor direction is connected to the guide parts in the region of the respective guide opening.

In principle, the spring device can also have a compression spring. However, it is preferred that the spring device has a tensile loading spring for exerting the spring force on the guide parts. Here and below, the term tensile load spring is to be understood as any device and any component that is set up to apply a tensile force to an extension. practice. In particular, the tension spring can be a screw tension spring or a rubber band. In principle, the Federvorrich device can be arranged at any point on the protective helmet. It is preferred that the spring device is arranged essentially at the entire opening. The spring device can thus be positioned in a particularly space-saving manner.

In principle, it is possible that the adjustment device only acts on one of the guide parts. A preferred embodiment of the protective helmet according to the proposal is, however, characterized in that the adjusting device is set up to exert an essentially opposing tensile force on the guide parts for adjusting the circumference of the head support ring. In other words, the tensile force which is exerted by the adjusting device on one of the two guide parts is directed essentially counter to the tensile force which is exerted by the adjusting device on the other of the two guide parts. The tensile force is then exerted on both guide parts.

In particular, it can be the case that the cable arrangement is specifically set up to exert the essentially opposing tensile force in each case on the guide parts. It is also preferred that the spring device is arranged between fastening points of the cable arrangement with the respective guide part.

Another preferred embodiment of the protective helmet according to the proposal is characterized in that the protective helmet has a neck protector for essentially completely covering a neck of the wearer, which neck protector is arranged on a lower edge of the outer shell. The lower edge of the outer shell means that edge which is in the lower direction from the point of view of a wearer of the protective helmet. It is also preferred that the guide parts are offset in the vertical direction with respect to the outer shell and are arranged in such a way that the guide parts are covered by the neck protector. In other words, the guide parts are not arranged at the same vertical height as the outer shell. The vertical direction is defined in turn based on a wearer of the protective helmet. In other words, without the neck protection, the guide parts would be in such a way that they would not be covered by the outer shell. This arrangement of the guide parts allows Attack as deep as possible on the head of the wearer of the protective helmet and thus ensure a more secure hold of the protective helmet.

According to a preferred embodiment of the protective helmet according to the proposal, it is provided that the adjustment device is set up to be released by a release actuation so that the preload of the spring device converts the head support ring into the basic circumference. It is then a so-called “quick release” mechanism. In principle, the release actuation can be any type of actuation. It is preferred that the release actuation consists of a pressure actuation.

According to a further preferred embodiment of the protective helmet according to the proposal, it is provided that the protective helmet has at least one inner layer part received by the outer shell for damping impact forces and that the head support ring has a main section for attaching the head support ring to the at least one inner layer part. It can also be provided that the head support ring is also attached directly to the outer shell. In principle, the at least one inner layer part can also be arranged so as to be adjustable relative to the outer shell. However, it is preferred that the at least one inner layer part is arranged in a stationary manner relative to the outer shell. A secure fit of the protective helmet can thus be achieved. In particular, it can be that the at least one inner layer part is preferably firmly connected to the outer shell.

A preferred embodiment of the proposed protective helmet is characterized in that the main section is connected to the at least one inner layer part in such a way that the at least one inner layer part retains its position relative to the outer shell when the circumference of the head support ring is adjusted. In particular, it preferably applies that the at least one inner layer part retains its position relative to the outer shell when the guide parts are displaced. It can thus be achieved that the setting of the circumference can be achieved essentially without adapting the main section. The above main section can in principle be designed in any way. Another preferred embodiment of the proposed protective helmet is characterized, however, in that the main section is essentially T-shaped with two elongated and oppositely extending arms for fastening with a respective guide part and with an elongated central part for fastening in a central area of the outer shell. Expressed differently, the arms are used for attachment to the guide parts and the central part for attachment, preferably to another structure, for example with an inner layer part. It is also preferred that the arms form part of the circumference of the head support ring. In principle, the arms and the middle part can run anywhere on the protective helmet. It is preferred that the arms run essentially along a side edge of the outer shell. The term "side edge" means one side of the outer shell in the transverse direction in relation to a viewing direction of a wearer of the protective helmet. It is also preferred that the middle part runs essentially along an apex line of the outer shell. The term apex line is also related to a person wearing the protective helmet. It is a section on the surface of the outer shell that runs centrally to the transverse direction - transversely, again based on the viewing direction of the wearer.

Further advantageous and preferred configurations emerge from the following description with reference to the figures. In the drawing showing only one exemplary embodiment

Fig. 1 is an interior view in detail of an embodiment of the protective helmet according to the proposal,

FIG. 2 shows a rear external view of the protective helmet from FIG. 1,

3 shows an overall interior view of the protective helmet from FIG. 1,

FIG. 4 shows a detailed view of the head carrier ring of the protective helmet from FIG. 1 in a basic state, FIG.

5 shows a detailed view of the head support ring of the protective helmet of FIG. 1 in the state with a reduced circumference and FIG Fig. 6 is an interior view of the protective helmet of Fig. 1 in a conceptual representation in section with the cushion covers removed.

1 shows a detail of the protective helmet shown in FIGS. It is a protective helmet for police forces. The protective helmet has an outer shell 1, which can be clearly seen in FIG. 2, and a head support ring 2 arranged within the outer shell 1. The head ring 2 represents that part of the protective helmet which is used essentially to ensure that the protective helmet sits as precisely as possible on the head of its wearer. Fig. 6 shows the head support ring 2 in the arranged inside the outer shell 1 to stand.

The protective helmet also has an adjusting device 3 with which the circumference of the head ring 2 can be adapted to the corresponding head circumference of the wearer of the protective helmet.

This adjustment device 3 here consists of a rotatable knob 4, which - as shown in FIG are attached to the button 4 in such a way that they can be wound onto the button 4 by one rotation of the button 4.

The individual ropes 6a, b are guided into the inside of the outer shell 1 starting from the button 4 through an opening in the outer shell 1, which opening is essentially arranged below the button 4. There the individual ropes 6a, b, as can be seen in FIG. 1, are each connected to a flexible guide part 7a, b of the head support ring 2. The opening is covered here by Polsterabdeckun gene 17, which are arranged on an inside of the outer shell 1 and is therefore not shown as such.

The rotation of the knob 4 causes the guide parts 7a, b to be displaced against one another by the tensile force exerted by the cable arrangement 5 consisting of the individual cables 6a, b. 4 shows a basic state of the guide parts 7a, b and thus of the head support ring 2, which corresponds to a maximum circumference of the head support ring 2. This maximum scope of the Head support rings form a basic scope here. A best existing spring device 8 from a tension spring 9 can be seen attached to the guide parts 7a, b. In this case, the spring device 8 already has a preload in this state with the maxima len circumference of the head support ring 2. This bias acts on the scope of the head ring 2 to überfüh ren in the basic scope or to leave the scope of the head ring 2 in the basic scope.

On the other hand, in the illustration of FIG. 5, the guide parts 7a, b have already been shifted to one another in such a way that the circumference of the head support ring 2 has been reduced starting from the initial state by means of the cable assembly 5 just described. The tensile forces exerted in each case by the individual cables 6a, b can be seen in their direction essentially in the opposite direction.

The displacement of the guide parts 7a, b and the reduction in the circumference of the head support ring 2 has also resulted in the spring device 8 being further tensioned. This further tension acts - just like the pre-tension already present in the basic state - in the direction of a backward displacement of the Füh tion parts 7a, b in the basic state with the maximum scope, ie with the basic scope.

It can be seen that the guide parts 7a, b have a respective guide opening 11a, b which are aligned with one another and form an overall opening 12. The size of the overall opening 12 depends recognizably on how far the guide parts 7a, b are displaced against one another. From FIGS. 4 and 5 it can be seen that in the state with the reduced circumference of the head support ring 2, the area of the total opening 12 is greater than in the basic state because of the higher degree of overlap of the guide parts 7a, b.

The spring device 8 consisting of the tension spring 9 is connected to the guide parts 7a, b at fastening points 13a, b of the cable arrangement 5 with the guide parts 7a, b and thus in the region of the respective guide opening 11a, b. The spring device 8 is thus arranged essentially within the overall opening 12. By pressing the button 4, the cable arrangement 5 is released. The bias of the spring device 8 causes a practically instantaneous return to the state shown in FIG. 4, in which the circumference of the head support ring 2 again corresponds to the basic circumference.

From FIG. 2 it can be seen that the protective helmet, in addition to the outer shell 1, firstly also has a neck protection 14 arranged in the vertical direction below the outer shell 1, the inside of which can also be seen in FIG. 3. It can be seen that the guide parts 7a, b are arranged vertically offset with respect to the outer shell 1 and thus in the area of the neck protection 14.

Second, the protective helmet also has an inner layer part 16, which is shown in FIG. 6. In the view of FIG. 6, the cushion covers 17 are partially removed, which normally and as shown in FIG. 3 cover both the inner layer part 16 and, to a large extent, the guide parts 7a, b.

In addition to the guide parts 7a, b, the head support ring 2 consists of a main section 18, the middle part 19 of which is firmly connected to the inner layer part 16 and its arms 20a, b to the guide parts 7a, b.

Claims

1. Safety helmet with an outer shell (1) for the distribution of impact forces, a head ring (2) for placing on a head of a wearer of the protective helmet and an adjustment device (3) for setting a circumference of the head ring (2) to adapt to the head of the Carrier, where in the adjustment device (3) through at least one opening of the outer shell (1) for operation from outside the outer shell (1) is guided, characterized in that the adjustment device (3) is set up when adjusting the circumference a To tension the spring device (8) of the protective helmet in such a way that the tension of the spring device (8) acts to convert the circumference of the head support ring (2) into a basic scope.

2. Protective helmet according to claim 1, characterized in that the adjusting device (3) has a button (4) for adjusting the circumference by a rotary actuation, which button (4) from outside the outer shell (1) is rotatable, in particular that the button (4) is passed through the at least one opening.

3. Protective helmet according to claim 1 or 2, characterized in that the at least one opening is one of the outer shell (1) completely umge bene bore, in particular that the at least one opening is arranged on egg ner back of the outer shell (1).

4. Protective helmet according to one of claims 1 to 3, characterized in that the adjusting device (3) has a, preferably with the button (4) coupled GE, cable arrangement (5), wherein the cable arrangement (5) is set up, in particular by a rotation of the knob (4) to pull the head support ring (2) to adjust the circumference.

5. Protective helmet according to claim 4, characterized in that the adjusting device (3) is designed to reduce a rope length of the rope arrangement (5) by winding up the rope arrangement (5) for adjusting the circumference of the head support ring (2).

6. Safety helmet according to claim 4 or 5, characterized in that the cable arrangement (5) is guided through the at least one opening, preferably before that the button (4) is arranged outside the outer shell (1).

7. Protective helmet according to one of claims 1 to 6, characterized in that the head support ring (2) has two, in particular, flexible guide parts (7a, b) which are designed to be displaced against one another to adjust the circumference of the head support ring (2), preferably that the guide parts (7a, b) at least partially form the circumference of the head support ring (2).

8. Protective helmet according to claim 7, characterized in that the adjustment device (3), in particular the cable arrangement (5), is designed to move the guide parts (7a, b) against each other to adjust the circumference, preferably that the guide parts (7a, b) have a respective guide opening (11a, b), the guide openings (11a, b) being at least partially aligned with one another and thereby forming an overall opening (12), in particular that by adjusting the circumference of the head support ring (2) the area of the total opening (12) is adapted.

9. Protective helmet according to claim 7 or 8, characterized in that the spring device (8) is connected to the guide parts (7a, b) in particular in the loading area of the respective guide opening (11a, b) and is directed to a tension of the spring device ( 8) as a spring force on the guide parts (7a, b), preferably that the spring device (8) has a tensile load spring (9) for exerting the spring force on the guide parts (7a, b), further in particular that the spring device (8 ) is arranged essentially at the overall opening (12).

10. Protective helmet according to one of claims 7 to 9, characterized in that the adjusting device (3), in particular the cable arrangement (5), is set up to apply an essentially oppositely directed tensile force to the guide parts (7a, b) for adjusting the Exercise circumference of the head support ring (2), preferably that the spring device (8) between see attachment points (13a, b) of the cable arrangement (5) with the respective guide part (7a, b) is arranged.

11. Protective helmet according to one of claims 1 to 10, characterized in that the protective helmet has a neck protection (14) for essentially completely covering a neck of the wearer, which neck protection (14) is arranged on a lower edge of the outer shell (1) is, preferably that the guide parts (7a, b) are offset in the vertical direction to the outer shell (1) and are arranged such that the guide parts (7a, b) are covered by the neck protector (14).

12. Protective helmet according to one of claims 1 to 11, characterized in that the adjusting device (3) is designed to be released by a Lösebetä operation, so that the spring device (8) by their pre-tensioning the head support ring (2) in the basic scope transferred, preferably, that the release actuation consists of a pressure actuation.

13. Protective helmet according to one of claims 1 to 12, characterized in that the protective helmet has at least one inner layer part (16) accommodated by the outer shell for damping impact forces and that the head support ring (2) has a main section (18) for fastening the head support ring (2) on the at least one inner layer part (16), preferably that the at least one inner layer part (16) is fixed in place to the outer shell (1), in particular is connected to the outer shell (1).

14. Protective helmet according to claim 13, characterized in that the main section (18) is connected to the at least one inner layer part (16) in such a way that an adjustment of the circumference of the head support ring (2), preferably a displacement of the guide parts (7a , b), the min least one inner layer part (16) retains its position relative to the outer shell (1).

15. Protective helmet according to claim 13 or 14, characterized in that the main section (1) is essentially T-shaped with two elongated and oppositely extending arms (20a, b) for attachment to a respective guide part (7a, b) and with a elongated middle part (19) for fastening in a central area of the outer shell (1) is, preferably that the arms (20a, b) run essentially along a side edge of the outer shell (1), in particular that the central part (19) runs essentially along an apex line of the outer shell (2).