Protective helmet

Abstract

The invention relates to a protective helmet having a shell (1) for dispersing impact forces and having a support structure (2) for separately supporting the shell (1) on the head of an individual wearing the protective helmet. The protective helmet is characterized in that the support structure (2) is divided into a front support (3) and a rear support (4), the rear support (4) is arranged at a distance from the front support (3), the protective helmet has an adjustable tensioning device (11) for exerting a tensioning force on the support structure (2), and the tensioning device (11) is designed in such a way that the force flow of the tensioning force is transmitted substantially completely through the shell (1) when the shell (1) is fixed to the head of the wearer, and the tensioning device (11) is designed to change the tensioning force by adjustment.

Description

Technical Field

[0001] The invention relates to a protective helmet having the features of the preamble of claim 1. Background Art

[0002] Protective helmets are used by the military, other security forces, fire brigades and other emergency services, as well as in factories and construction sites, primarily to protect the wearer from mechanical risks of injury, such as debris or falling objects. As with other types of helmets, they must be able to be worn safely by wearers of different head sizes and shapes, at least in a certain area. In addition, the outer shell of the helmet does not directly contact the wearer's head, but is held at a distance from the head by supporting arrangements, such as head support rings.

[0003] WO 2021 / 176061 A1 in the prior art discloses a helmet for security forces having a circumferential head support ring. By changing the circumference of the head support ring, the helmet can be adjusted to suit different head sizes and shapes. Since the head support ring is circumferential, adjusting the circumference at a single point is sufficient to achieve this adjustment. The head support ring then fits snugly against the head to secure the helmet. The circumferential nature of the head support ring also means that the force flow of the tensioning force is mainly transmitted through the head support ring itself, rather than through the outer shell.

[0004] One disadvantage of providing a wraparound head support ring is that it is difficult to provide removable earmuffs. This is because such earmuffs usually have a support band connecting the two auricles, which is guided over the head. If a wraparound head support ring is used, it is not always possible for the support band of the earmuffs to pass through the helmet and under the outer shell of the helmet. Even if this is theoretically possible in some cases, the result is a poor fit and inadequate adjustment.

[0005] Based on this prior art, the object of the present invention is to provide a protective helmet which can optionally be used with earmuffs and in this case also offers a good fit and good adjustment to different head shapes and sizes.

[0006] With a protective helmet having the features of the preamble of claim 1 , this object is achieved by the characteristics of the characterizing part of claim 1 . Summary of the invention

[0007] A key aspect of the present invention is the discovery that a two-part support structure can be provided wherein a gap can be provided between the front and rear portions of the support structure for the support strap to pass through. To accommodate the wearer's head shape and size, only one portion of the support structure can be simply adjusted using an adjustable tensioning device.

[0008] The proposed protective helmet has an outer shell for dispersing impact forces. The proposed protective helmet also has a support structure for spaced support of the outer shell on the head of a wearer of the protective helmet. In other words, the support structure ensures support of the outer shell on the wearer's head at a distance from the wearer's head.

[0009] The protective helmet proposed can especially be a military helmet, a combat helmet, a police helmet or a pilot's helmet. Equally, the helmet can also be a fire helmet, a forestry helmet or a work safety helmet.

[0010] The proposed protective helmet is characterized in that the support structure is divided into a front support and a rear support, the rear support being arranged at a distance from the front support. Both the front support and the rear support may be of multi-part design. A key feature is the distance between the front support or all components of the front support and the rear support or all components of the rear support. The front support is preferably arranged at a distance from the rear support in the longitudinal direction of the protective helmet. The longitudinal direction of the protective helmet corresponds to the line of sight of the wearer of the protective helmet.

[0011] The proposed protective helmet is further characterized in that the protective helmet has an adjustable tensioning device for applying a tensioning force to the support structure, and the tensioning device is configured such that the force flow of the tensioning force is substantially completely transmitted through the shell when the shell is fixed to the wearer's head.

[0012] In other words, the front support or the rear support tensioned by the tensioning device exerts a force on the wearer's head, which presses the corresponding other support toward the wearer's head via the force flow of the shell. The shell is thus fixed on the wearer's head at least in certain directions. The force flow of the tensioning force is transmitted substantially completely via the shell, which means that a large part of the force flow, in particular between the rear support and the front support, does not bypass the shell because they are arranged at a distance from each other. In other words, the force flow cannot bypass the shell.

[0013] Finally, the proposed protective helmet is characterized in that the tensioning device is configured to change the tensioning force by adjustment. Changing the tensioning force by adjustment means that here the tensioning force can be changed by actuating the tensioning device and moving it to a different configuration. Changing the tensioning force can involve both its magnitude and its direction. A key feature is that the tensioning device does not add or remove any additional components, but only moves the existing components of the tensioning device to a different arrangement. This adjustment of the tensioning force allows the protective helmet to adapt to different shapes and sizes of the wearer's head. The tensioning device can be included in the support structure. However, the tensioning device can also be separated from the support structure.

[0014] A preferred embodiment of the protective helmet is characterized in that the tensioning device is configured to apply a tensioning force to the rear support. It is further preferred that the rear support is configured to transfer the tensioning force to the front support via the outer shell. In this way, the force flow is closed. However, the tensioning device can also be configured to apply a tensioning force to the front support.

[0015] Another preferred embodiment of the protective helmet is characterized in that the tensioning device is configured to apply a pulling force as the tensioning force. The tensioning device can also be configured to apply a pushing force as the tensioning force.

[0016] According to a preferred embodiment of the protective helmet, the support structure has a contact section, which is hinged to the shell. The hinge itself does not have to be directly attached to the shell, but can also be indirectly attached to the shell. The contact section is preferably part of the support structure, in particular the part that is in direct contact with the head of the wearer of the protective helmet. The contact section can be contained in the front support or also in the rear support. The position and / or direction of the contact section can be changed by the hinged connection of the contact section, in particular in order to adapt to the head shape or head size. In principle, the hinged connection of the contact section to the shell can be realized in any way. In addition, it is preferred that the contact section is elastic. This allows a particularly good adaptation to the wearer's head shape.

[0017] Preferably, the contact section is hinged to the housing via a swing arm, wherein the swing arm is preferably included in the support structure. Such a swing arm comprises an arm structure and at least one swivel joint, wherein the arm structure is pivotally mounted on the at least one swivel joint. The contact section is arranged at the free end of the arm structure. The arm structure may comprise one or more arms, which may also be forked. If there are multiple arms, they are preferably mounted on separate swivel joints respectively.

[0018] The contact segment can also be hinged to the housing via a parallelogram. Preferably, the support structure comprises a parallelogram. Such a parallelogram comprises at least two offset arm structures, which are pivotally mounted on respective swivel joints. Since the two arm structures are attached to the contact segment in an offset manner, the contact segment can maintain its orientation even if the arm structures are pivoted.

[0019] According to another preferred embodiment of the protective helmet, the support structure has a movable guide device, by which the contact section of the support structure is mounted to move relative to the shell. The contact section is preferably mounted to move substantially linearly relative to the shell. The guide device can have a guide rail and a slider, which can be moved along the guide rail. Preferably, the guide rail extends substantially in the longitudinal direction of the protective helmet.

[0020] A preferred embodiment of the protective helmet is characterized in that the tensioning device is connected to the contact segment. Furthermore, the tensioning device can be attached to the outer shell indirectly or directly. In particular, the tensioning device can have two offset-attached guide parts. Furthermore, preferably, by adjusting the tensioning device, the offset-attached guide parts can be moved relative to each other. The tensioning device can be adjusted in particular by means of a knob.

[0021] In principle, the rear support can apply tensioning forces to the wearer's head in any manner. According to another preferred embodiment of the protective helmet, the rear support is configured to grip the head substantially parallel to the rear edge of the shell. Thus, the rear support can push or pull the wearer's head in the longitudinal direction, which facilitates a good fit of the helmet. The contact section of the rear support is preferably responsible for gripping the head.

[0022] The tensioning device can also change the position of the rear support or the front support. A preferred embodiment of the protective helmet is characterized in that the tensioning device is configured to adjust the rear support, preferably the contact segment, in the longitudinal direction of the protective helmet by adjustment. This adjustment allows a more precise adaptation to the length of the wearer's head. Alternatively or additionally, the tensioning device can also be configured to adjust the front support, preferably the contact segment, in the longitudinal direction of the protective helmet by adjustment. This adjustment allows a more precise adaptation to the length of the wearer's head.

[0023] Another preferred embodiment of the protective helmet is characterized in that the rear support and / or the front support are fixedly connected to the shell. This connection is not necessarily direct, and can also be indirectly set up by the structure between the rear support or the front support and the shell.

[0024] Although as mentioned above, the length adjustment of the support structure is preferably achieved by adjusting the rear support, the width adjustment is preferably achieved by adjusting the front support. Therefore, according to a preferred embodiment of the protective helmet, the protective helmet has an adjustment device for adjusting the width of the front support in the transverse direction of the protective helmet. The transverse direction of the protective helmet extends perpendicularly and horizontally to the longitudinal direction.

[0025] A preferred embodiment of the protective helmet is characterized in that the front support is substantially fixed to the shell relative to the longitudinal direction of the protective helmet. The longitudinal adjustability of the rear support means that the front support does not require such longitudinal adjustability, which simplifies the design.

[0026] Another preferred embodiment of the protective helmet is characterized in that the front support is substantially semicircular and is arranged in the front area of ​​the shell. In other words, the substantially semicircular front support extends along the likewise substantially semicircular and convex front area of ​​the shell. It is further preferred that the front support is attached to the shell in the central area of ​​the semicircular shape. The end areas of the front support can be adjusted to adjust the width.

[0027] According to a preferred embodiment of the protective helmet, the protective helmet has a front strap for fixing the outer shell to the head. The front strap is preferably attached to the front support. The front strap is usually guided to the chin area of ​​the wearer and fixed there. It is further preferred that the front strap is attached to the respective end area of ​​the semicircular shape of the front support. In principle, however, the protective helmet can also have front straps and these front straps are attached to the outer shell.

[0028] According to another preferred embodiment of the protective helmet, the rear support, preferably the contact segment, is substantially semicircular and is arranged in the back of the head region of the outer shell. In other words, the substantially semicircular rear support or contact segment extends along the back of the head region of the outer shell, which is also substantially semicircular and convex. In particular, when the contact segment is included in the front support, the contact segment can also be substantially semicircular and arranged in the front region of the outer shell.

[0029] A preferred embodiment of the protective helmet is characterized in that the protective helmet has rear straps for fixing the outer shell to the head. The rear straps are preferably attached to the rear support. The rear straps are usually also guided to the chin area of ​​the wearer and fixed there. They can also be connected to the front straps there. In principle, however, the protective helmet can also have rear straps and these can be attached to the outer shell.

[0030] Another preferred embodiment of the protective helmet is characterized in that the front support is arranged at a distance from the rear support, so that the hearing protection support of the earmuff can be guided under the shell and between the front support and the rear support. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Further advantageous and preferred embodiments will be apparent from the following description in conjunction with the accompanying drawings. In the drawings, only exemplary embodiments are shown:

[0032] Figure 1 is a bottom schematic view of a first exemplary embodiment of the proposed protective helmet,

[0033] Figure 2 yes Figure 1 A side cross-sectional view of the exemplary embodiment shown,

[0034] Figure 3 is a bottom schematic view of a second exemplary embodiment of the proposed protective helmet,

[0035] Figure 4 yes Figure 3 A side cross-sectional view of the exemplary embodiment shown,

[0036] Figure 5 is a side cross-sectional view of a third exemplary embodiment of the proposed protective helmet. DETAILED DESCRIPTION

[0037] Figure 1 and 2The protective helmet of the first exemplary embodiment shown is a military helmet for soldiers. The support structure 2 is arranged in the shell 1 and is divided into a front support 3 and a rear support 4, which are arranged at a distance from each other. The distance between the front support 3 and the rear support 4 is sufficient to allow the hearing protection support 23 of the earmuff 24 to pass under the shell 1.

[0038] The rear support 4 has a substantially semicircular contact section 5 which is connected to the housing 1 via a swing arm 6 of the support structure 2, the swing arm 6 consisting of two arms 7a, b and respective swivel joints 8a, b. Figure 1 As shown, the contact section 5 grips the back of the wearer's head substantially parallel to the rear edge 25 of the shell 1 .

[0039] The front support 3 itself is as follows Figure 1 The front support 3 is shown as being substantially semicircular. The width of the front support 3 can be adjusted in the transverse direction 19 of the protective helmet. This enables different head sizes and shapes to be accommodated in the area of ​​the head. The front support 3 is substantially fixed to the shell 1 relative to the longitudinal direction 14 of the protective helmet.

[0040] Furthermore, the protective helmet has a tensioning device 11 having two guide parts 12a, b connected to the shell 1 and a knob 13, by adjusting the knob 13, the guide parts 12a, b can be moved relative to each other. By this adjustment and the resulting length contraction, the tensioning device 11 can exert a variable tensioning force, in particular a tensile force, on the rear support 4. The guide parts 12a, b are connected to the contact section 5 of the rear support 4. By operating the knob 13, the contact section 5 can be adjusted in the longitudinal direction 14 of the protective helmet until it comes into contact with the back of the wearer's head. Figure 1 and 2 Two different positions of the contact segment 5 are shown, one of which is indicated by a dotted line. Further adjustment will cause the back support 4 to fit against the back of the wearer's head with variable tension.

[0041] Since the rear support 4 is spaced apart from the front support 3 and is not connected, the force flow caused by the tensioning force passes through the rear support 4 and the shell 1 and is then transmitted to the front area of ​​the wearer's head through the front support 2 .

[0042] Finally, the protective helmet has a front strap 21 and a rear strap 22 , each of which is attached to the supporting structure 2 .

[0043] Figure 3 and 4 The second exemplary embodiment shown provides a protective helmet with Figure 1 and 2The first exemplary embodiment shown differs in that the support structure 2, in particular the rear support 4, has a guide device 15, which includes a guide rail consisting of slide rails 16a, b and slide blocks 17a, b that can move along the slide rails 16a, b. The guide device 15 realizes a function similar to the swing arm 6 of the first exemplary embodiment, enabling the contact section 5 to be linearly moved relative to the housing 1. Figure 3 and 4 Also shown are two different positions of the contact segment 5, one of which is indicated by a dashed line. The tensioning device 11 is shown schematically. Apart from this, the protective helmet of the second exemplary embodiment is identical to the protective helmet of the first exemplary embodiment.

[0044] Figure 5 The third exemplary embodiment shown is Figure 1 and 2 The first exemplary embodiment shown differs 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, each with two arms, thus a total of four arms 7a, b, two of which are as shown in FIG. Figure 5 As shown, they are pivotally mounted on respective rotary joints 8a, b, wherein the two rotary joints are also shown in Figure 5 The tensioning device 11 of this exemplary embodiment is shown schematically.

Claims

1. A protective helmet having an outer shell (1) for dispersing impact forces, and a support structure (2) for separately supporting the outer shell (1) on the head of a wearer of the protective helmet, characterized in that: The support structure (2) is divided into a front support (3) and a rear support (4), and the rear support (4) is arranged at an interval with the front support (3). The protective helmet has an adjustable tensioning device (11) for applying tensioning force to the support structure (2). The tensioning device (11) is configured to make the force flow of the tensioning force basically completely transmitted through the shell (1) when the shell (1) is fixed on the wearer's head, and the tensioning device (11) is configured to change the tensioning force by adjustment.

2. The protective helmet according to claim 1, characterized in that: The tensioning device (11) is configured to apply tensioning force to the rear support (4), and preferably the rear support (4) is configured to transmit the tensioning force to the front support (3) through the housing (1).

3. The protective helmet according to claim 1 or 2, characterized in that: The tensioning device (11) is configured to apply a pulling force as the tensioning force.

4. The protective helmet according to any one of claims 1 to 3, characterized in that: The supporting structure (2) has a contact section (5), which is articulated to the housing (1). Preferably, the contact section (5) is articulated to the housing (1) via a swing arm (6).

5. The protective helmet according to any one of claims 1 to 4, characterized in that: The support structure (2) has a movable guide device (15), and the contact section (5) of the support structure (2) is preferably mounted so as to be substantially linearly movable relative to the housing (1) by means of the guide device (15).

6. The protective helmet according to any one of claims 1 to 5, characterized in that: The rear support (4) is configured to grasp the head, preferably by means of a contact section (55) of the rear support (5) in a manner substantially parallel to a rear edge (19) of the housing (1).

7. The protective helmet according to any one of claims 1 to 6, characterized in that: The tensioning device (11) is configured to adjust the rear support (4), preferably the contact section (5), in the longitudinal direction (14) of the protective helmet by adjustment.

8. The protective helmet according to any one of claims 1 to 7, characterized in that: The protective helmet has an adjustment device for adjusting the width of the front support (3) in the transverse direction (19) of the protective helmet.

9. The protective helmet according to any one of claims 1 to 8, characterized in that The front support (3) is substantially fixed to the outer shell (1) relative to the longitudinal direction (14) of the protective helmet.

10. The protective helmet according to any one of claims 1 to 9, characterized in that: The front support (3) is substantially semicircular and is arranged in the front area of ​​the housing (1), preferably the front support (3) is attached to the housing (1) in the central area (20) of the semicircular shape.

11. The protective helmet according to any one of claims 1 to 10, characterized in that: The protective helmet has a front strap (21) for fixing the shell (1) on the head, in particular the front strap (21) is attached to the front support (3), preferably the front strap (21) is attached to the respective end areas of the semicircular shape of the front support (3).

12. The protective helmet according to any one of claims 1 to 12, characterized in that The rear support (4), preferably the contact section (5), is substantially semicircular and is arranged in the back of the head region of the housing (1).

13. The protective helmet according to any one of claims 1 to 12, characterized in that The protective helmet has a rear strap (22) for fixing the shell (1) on the head, preferably the rear strap (22) is attached to the rear support (4).

14. The protective helmet according to any one of claims 1 to 13, characterized in that The front support (3) and the rear support (4) are arranged at a distance from each other, so that the hearing protection support (23) of the earmuff can be guided under the shell (1) and located between the front support (3) and the rear support (4).

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