PROTECTIVE HELMET

Abstract

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

Claims

1. A protective helmet comprising: 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 adapting to the head of the wearer, wherein the adjustment device is guided through at least one opening of the outer shell for operation from outside the outer shell, wherein the adjustment device is adapted to tension a spring device of the protective helmet during adjustment of the circumference such that the tension of the spring device acts to transfer the circumference of the head support ring into a basic circumference.

2. The protective helmet according to claim 1, wherein the adjustment device has a button for adjusting the circumference by a rotary movement, which button is configured to be turned from outside the outer shell, wherein the button is guided through the at least one opening.

3. The protective helmet according to claim 1, wherein the at least one opening is a bore completely surrounded by the outer shell, wherein the at least one opening is arranged on a rear side of the outer shell.

4. The protective helmet according to one of claim 1, wherein the adjustment device comprises a cable arrangement, coupled to the button, wherein the cable arrangement is adapted to apply a pulling actuation to the head support ring for adjusting the circumference, by a turning of the button.

5. The protective helmet according to claim 4, wherein the adjustment device is adapted to reduce the cable length of the cable arrangement by winding up the cable arrangement to adjust the circumference of the head support ring.

6. The protective helmet according to claim 4, wherein the cable arrangement is guided through the at least one opening, the button is arranged outside the outer shell.

7. The protective helmet according to claim 1, wherein the head support ring has two flexible guide parts which are adapted to be displaced onto one another for adjusting the circumference of the head support ring, wherein the guide parts form at least partially the circumference of the head support ring.

8. The protective helmet according to claim 7, wherein the adjustment device, is adapted to displace the guide parts onto one another for adjusting the circumference, wherein the guide parts have a respective guide opening, wherein the guide openings align at least partially with one another and thereby form a complete opening, wherein the area of the complete opening is adapted by adjusting the circumference of the head support ring.

9. The protective helmet according to claim 7, wherein the spring device is connected to the guide parts in the region of the respective guide opening and is adapted to apply a tension of the spring device as spring force to the guide parts, wherein the spring device has a tensile load spring for applying the spring force to the guide parts, such that the spring device is arranged substantially at the complete opening.

10. The protective helmet according to claim 7, wherein the adjustment device, the cable arrangement is adapted to apply a substantially oppositely directed tensile force to the guide parts in each case to adjust the circumference of the head support ring, wherein the spring device is arranged between fastening points of the cable arrangement with the respective guide part.

11. The protective helmet according to claim 1, wherein the protective helmet has a neck protector to substantially completely cover a neck of the wearer, which neck protector is arranged at a lower edge of the outer shell, wherein the guide parts are offset in the vertical direction with respect to the outer shell and are arranged such that the guide parts are covered by the neck protector.

12. The protective helmet according to claim 1, wherein the adjustment device is adapted to be released by a release actuation so that as a result of its pre-tension the spring device transfers the head support ring into the basic circumference, wherein the release actuation comprises a pressure actuation.

13. The protective helmet according to claim 1, wherein 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 fastening the head support ring to the at least one inner layer part, wherein the at least one inner layer part is arranged in a fixed position with respect to the outer shell.

14. The protective helmet according to claim 13, wherein the main section is connected to the at least one inner layer part such that the at least one inner layer part maintains its position with respect to the outer shell upon an adjustment of the circumference of the head support ring.

15. The protective helmet according to claim 13, wherein the main section is substantially T-shaped with two elongate and oppositely running arms for fastening to a respective guide part and with an elongate central part for fastening in a central region of the outer shell, wherein the arms run substantially along a side edge of the outer shell, wherein the central part runs substantially along a crest line of the outer shell.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Further advantageous and preferred embodiments are obtained from the following description with reference to the figures. In the drawing showing merely one exemplary embodiment

[0031] FIG. 1 shows an inner view in detail of an exemplary embodiment of the protective helmet according to the disclosure,

[0032] FIG. 2 shows a rear outer view of the protective helmet from FIG. 1,

[0033] FIG. 3 shows a complete inner view of the protective helmet from FIG. 1,

[0034] FIG. 4 shows a detailed view of the head support ring of the protective helmet from FIG. 1 in a basic state,

[0035] FIG. 5 shows a detailed view of the head support ring of the protective helmet from FIG. 1 in the state with a reduced circumference and

[0036] FIG. 6 shows an inner view of the protective helmet from FIG. 1 in a schematic diagram in sectional view with the padded covers removed.

DETAILED DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 shows a detail of the protective helmet shown in FIGS. 2 and 3. This 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 inside the outer shell 1. The head support ring 2 is that part of the protective helmet which is substantially used in particular for the most accurate possible fit of the protective helmet on the head of its wearer. FIG. 6 shows the head support ring 2 in the state arranged inside the outer shell 1.

[0038] The protective helmet also has an adjustment device 3 by means of which the circumference of the head support ring 2 can be adapted to the corresponding head circumference of the wearer of the protective helmet.

[0039] The adjustment device 3 here consists of a rotatable button 4 which, as shown in FIG. 2, is arranged outside the outer shell 1 and a cable arrangement 5. The cable arrangement 5 comprises a total of two individual cables 6a, b which are fastened to the button 4 in such a manner that they can be wound onto the button 4 by means of a turning of the button 4.

[0040] The individual cables 6a, b are guided into the inside of the outer shell 1 starting from the button 4 through an opening of the outer shell 1 which opening is arranged substantially underneath the button 4. There, as can be seen in FIG. 1, the individual cables 6a, b are each connected to a flexible guide part 7a, b of the head support ring 2. The opening is covered by padding covers 17 here which are arranged on an inner side of the outer shell 1 and is therefore not shown as such.

[0041] Turning the button 4 has the result that the guide parts 7a, b are displaced onto one another by the tensile force applied by the cable arrangement 5 consisting of the individual cables 6a, b. FIG. 4 shows a basic state of the guide parts 7a, b and therefore of the head support ring 2 which corresponds to a maximum circumference of the head support ring 2. This maximum circumference of the head support ring here forms a basic circumference. A spring device 8 consisting of a tension spring 9 is clearly fastened to the guide parts 7a, b. In this state with the maximum circumference of the head support ring 2 the spring device already has a pre-tension. This pre-tension acts to transfer the circumference of the head support ring 2 into the basic circumference or to leave the circumference of the head support ring 2 in the basic circumference.

[0042] On the other hand, in the diagram of FIG. 5 the guide parts 7a, b are already displaced onto one another by means of the tensile actuation just described by means of the cable arrangement 5 in such a manner that starting from the basic state, the circumference of the head support ring 2 was reduced. It can be seen that the tensile forces applied by the individual cables 6a, b in each case are directed substantially opposite in their direction.

[0043] The displacement of the guide parts 7a, b and the reduction of the circumference of the head support ring 2 has also had the result that the spring device 8 is further tensioned. This further tension—in the same way as the pre-tension already present in the basic state—acts in the direction of a displacement of the guide parts 7a, b back into the basic state with the maximum circumference, i.e. with the basic circumference.

[0044] The guide parts 7a, b clearly have a respective guide opening 11a, b which are aligned with one another and form a complete opening 12. The size of the complete opening 12 clearly depends on how far the guide parts 7a, b are displaced onto one another. It can be seen from FIGS. 4 and 5 that in the state with the reduced circumference of the head support ring 2 the area of the complete opening 12 is greater than in the basic state as a result of the higher degree of overlap of the guide parts 7a, b.

[0045] 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 therefore in the region of the respective guide opening 11a, b. The spring device 8 is therefore arranged substantially inside the complete opening 12.

[0046] The cable arrangement 5 is released by a pressure actuation of the button 4. The pre-tension of the spring device 8 brings about an almost simultaneous return into the state shown in FIG. 4 in which the circumference of the head support ring 2 again corresponds to the basic circumference.

[0047] It can be seen from FIG. 2 that in addition to the outer shell 1 the protective helmet firstly also has another neck protector 14 arranged in the vertical direction underneath the outer shell 1, whose inner side 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 therefore in the region of the neck protector 14.

[0048] Secondly the protective helmet also has an inner layer part 16 which is shown in FIG. 6. In the view in FIG. 6 the padded covers 17 which normally and as shown in FIG. 3 cover both the inner layer part 16 and also substantial parts of the guide parts 7a, b are partially removed.

[0049] In addition to the guide parts 7a, b the head support ring 2 consists of a main section 18 whose central part 19 is firmly connected to the inner layer part 16 and whose arms 20a, b are connected to the guide parts 7a, b.