PROTECTIVE HELMET

Abstract

In an embodiment a protective helmet includes an outer shell configured for distributing impact forces, a support structure spaced apart from and supporting the outer shell, the support structure placeable on a head of a wearer of the protective helmet, wherein the support structure is subdivided into a front support and a rear support spaced apart from the front support, and an adjustable tensioning device configured for exerting a tensioning force on the support structure so that a force flow of the tensioning force for fixing the outer shell on the head of the wearer flows completely through the outer shell and for varying the tensioning force by an adjustment.

Claims

1. -14. (canceled)

15. A protective helmet comprising: an outer shell configured for distributing impact forces; a support structure spaced apart from and supporting the outer shell, the support structure placeable on a head of a wearer of the protective helmet, wherein the support structure is subdivided into a front support and a rear support spaced apart from the front support; and an adjustable tensioning device configured for: exerting a tensioning force on the support structure so that a force flow of the tensioning force for fixing the outer shell on the head of the wearer flows completely through the outer shell; and varying the tensioning force by an adjustment.

16. The protective helmet according to claim 15, wherein the tensioning device is configured for exerting the tensioning force on the rear support.

17. The protective helmet according to claim 15, wherein the tensioning device is configured for exerting the tensioning force on the rear support so that the tensioning force is transmitted via the outer shell to the front support.

18. The protective helmet according to claim 15, wherein the tensioning force is a tensile force.

19. The protective helmet according to claim 15, wherein the support structure comprises a contact segment hinged to the outer shell.

20. The protective helmet according to claim 19, wherein the contact segment is hinged to the outer shell via a swing arm.

21. The protective helmet according to claim 15, wherein the support structure has a displaceable guide arrangement, with which a contact segment of the support structure is mounted so as to be displaceable substantially linearly relative to the outer shell.

22. The protective helmet according to claim 15, wherein the rear support is configured for gripping the head by a contact segment of the rear support.

23. The protective helmet according to claim 22, wherein the contact segment of the rear support is operateable parallel to a rear edge of the outer shell.

24. The protective helmet according to claim 15, wherein the tensioning device is configured for adjusting a contact segment of the rear support in a longitudinal direction of the protective helmet.

25. The protective helmet according to claim 15, further comprising an adjustment device configured for adjusting a width of the front support in a transverse direction of the protective helmet.

26. The protective helmet according to claim 15, wherein the front support is arranged stationary relative to the outer shell with respect to a longitudinal direction of the protective helmet.

27. The protective helmet according to claim 15, wherein the front support is semicircular in shape and is arranged in a front region of the outer shell.

28. The protective helmet according to claim 27, wherein the front support is attached to the outer shell in a central region of the semicircular shape.

29. The protective helmet according to claim 15, further comprising front straps configured for fastening the outer shell on the head.

30. The protective helmet according to claim 29, wherein the front straps are attached to the front support on respective end regions of a semicircular shape.

31. The protective helmet according to claim 15, wherein a contact segment of the rear support is semicircular in shape and is arranged in a back of the outer shell.

32. The protective helmet according to claim 15, further comprising rear straps configured for fastening the outer shell on the head, the rear straps being attached to the rear support.

33. The protective helmet according to claim 15, wherein the front support is spaced apart from the rear support such that a hearing protection support of earmuffs is guidable under the outer shell and between the front support and the rear support.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Further advantageous and preferred embodiments will result from the following description with reference to the figures. In the drawing, which only shows exemplary embodiments:

[0032] FIG. 1 is a schematic view from below of a first exemplary embodiment of the proposed protective helmet;

[0033] FIG. 2 is a schematic sectional view from the side of the exemplary embodiment shown in FIG. 1;

[0034] FIG. 3 is a schematic view from below of a second exemplary embodiment of the proposed protective helmet;

[0035] FIG. 4 is a schematic sectional view from the side of the exemplary embodiment shown in FIG. 3; and

[0036] FIG. 5 is a schematic sectional view from the side of a third exemplary embodiment of the proposed protective helmet.

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

[0037] The protective helmet of the first exemplary embodiment shown in FIGS. 1 and 2 is a military helmet for soldiers. A support structure 2 is placed within the outer shell 1 and is subdivided into a front support 3 and a rear support 4, which are respectively arranged spaced apart from one another. The distance between the front support 3 and the rear support 4 is enough to pass the hearing protection support 23 of earmuffs 24 under the outer shell 1.

[0038] The rear support 4 has a substantially semicircular contact segment 5, which is connected to the outer shell 1 via a swing arm 6 of the support structure 2 consisting of two arms 7a, b and a respective rotary joint 8a, b. As shown in FIG. 1, the contact segment 5 grips a back of the head of the wearer substantially parallel to the rear edge 25 of the outer shell 1.

[0039] The front support 3 is for its part and as shown in FIG. 1 substantially semicircular in shape. The width of the front support 3 can be altered in a transverse direction 19 of the protective helmet. The enables adjustment to different head sizes and shapes in this region of the head. The front support 3 is arranged stationary relative to the outer shell 1 with respect to a longitudinal direction 14 of the protective helmet.

[0040] In addition, the protective helmet has a tensioning device 11, which for its part has two guide parts 12a, b, which are connected to the outer shell 1, and a knob 13, the adjustment of which allows the guide parts 12a, b to be moved relative to one another. Thanks to this adjustment and the resulting length contraction, the tensioning device 11 can exert a variable tensioning force and in particular a tensile force on the rear support 4. The guide parts 12a, b are connected to the contact segment 5 of the rear support 4. The contact segment 5 can be adjusted in the longitudinal direction 14 of the protective helmet by actuating the knob 13 until it engages with the back of the head of the wearer. FIGS. 1 and 2 show two different positions of the contact segment 5, one of which is shown by dashed lines. Further adjustment tensions the rear support 4 against the back of the head with variable tensioning force.

[0041] As the rear support 4 is spaced apart from the front support 3 and therefore not connected to it, the force flow caused by the tensioning force flows via the rear support 4 and the outer shell 1, then via the front support 2 to the front region of the head of the wearer.

[0042] Finally, the protective helmet has both front straps 21 and rear straps 22, which are respectively attached to the support structure 2.

[0043] The second exemplary embodiment of the proposed protective helmet shown in FIGS. 3 and 4 differs from the first exemplary embodiment shown in FIGS. 1 and 2 in that the support structure 2 and particularly the rear support 4 has a guide arrangement 15 with a guide consisting of slide rails 16a, b as well as with sliders 17a, b that can be moved along the slide rails 16a, b. This guide arrangement 15 fulfils a similar functionality to the swing arm 6 of the first exemplary embodiment, by enabling here the contact segment 5 to be linearly displaced relative to the outer shell 1. FIGS. 3 and 4 also show two different positions of the contact segment 5, one of which is shown by dashed lines. The tensioning device 11 is illustrated schematically. Otherwise, the protective helmet of the second exemplary embodiment corresponds to that of the first exemplary embodiment.

[0044] The third exemplary embodiment shown in FIG. 5 in turn differs from the first exemplary embodiment shown in FIGS. 1 and 2 in that the support structure 2 comprises a parallelogram 18, to which the contact segment 5 is attached. The parallelogram 18 consists of two offset arm structures with respectively two and therefore a total of four arms 7a, b, two of which are shown in FIG. 5, which are pivotably mounted on a respective rotary joint 8a, b, two of which are likewise shown. The tensioning device 11 of this exemplary embodiment is illustrated schematically.