Part of a Protective Apparatus and Protective Apparatus

The present disclosure relates to a part of a protective apparatus, said part being a first part for attaching to a second part of the protective apparatus and a protective apparatus, such as a helmet, comprising the first part.

Impact protection apparatuses generally aim to reduce the energy transferred to an object, such as a person to be protected, by an impact. This may be achieved by energy absorbing means, energy redirecting means, or a combination thereof. Energy absorbing means may include energy absorbing materials, such as a foam materials, or structures configured to deform elastically and/or plastically in response to an impact. Energy redirecting means may include structures configured to slide, shear or otherwise move in response to an impact.

Impact protection apparatuses include protective apparel for protecting a wearer of the apparel. Protective apparel comprising energy absorbing means and/or energy redirecting means is known. For example, such means are implemented extensively in protective headgear, such as helmets.

Examples of helmets comprising energy absorbing means and energy redirecting means include WO 2001/045526 and WO 2011/139224 (the entirety of which are herein incorporated by reference). Specifically, these helmets include at least one layer formed from an energy absorbing material and at least one layer that can move relative to the head of the wearer of the helmet under an impact.

Implementing moving parts in a protective apparatus has challenges. For example, connecting two layers of an apparatus in such a way that permits enough relative movement between parts of the apparatus under an impact but maintains the structural integrity of the apparatus can be challenging. Ensuring that the connecting means can be manufactured and assembled relatively easily can be challenging.

Further, ensuring desired relative movement between moving parts under an impact can be challenging. Ensuring that the apparatus can be manufactured and assembled relatively easily can be challenging.

It is the aim of the present invention to provide a part of a protective apparatus and a protective apparatus comprising the part that at least partially address some of the problems discussed above.

According to a first aspect of the disclosure there is provided a part of a protective apparatus, said part being a first part for attaching to a second part of the protective apparatus such that the first part and the second part of the apparatus can move relative to each other under an impact, the first part of the protective apparatus comprising: an attachment part configured to be attached to the second part of the apparatus, the attachment part comprising a first part of a connecting means configured to be detachably attached to a second part of the connecting means provided to the second part of the apparatus; a patch of low friction layer arranged adjacent to the first part of the connecting means in a lateral direction substantially perpendicular to a direction of connection between the first and second parts of the apparatus; wherein, when the first part of the connecting means is attached to the second part of the connecting means, the first part of the connecting means is configured to detach from the second part of the connecting means as the connector is displaced in a lateral direction relative to the second part of the connecting means such that the patch of low friction layer moves towards the second part of the connecting means, and the patch of low friction layer is configured to slide against the second connecting means as the first part of the connecting means detaches therefrom.

Optionally, the patch of low friction layer is substantially smaller in the lateral direction than the first and second parts of the apparatus.

Optionally, the patch of low friction layer has a maximum dimension in the lateral direction that does not exceed 50 mm.

Optionally, the patch of low friction layer substantially surrounds the first part of the connecting means in the lateral direction. Optionally, the patch of low friction layer comprises an aperture surrounding the first part of the connecting means in the lateral direction.

Optionally, the patch of low friction layer is configured to facilitate detachment of the first part of the connecting means from the second part of the connecting means.

Optionally, at least a portion of an edge of the patch of low friction layer facing the first part of the connecting means in the lateral direction is ridged, toothed or serrated.

Optionally, the patch of low friction layer is no more than 1 mm thick.

Optionally, the patch of low friction layer is substantially stiff.

Optionally, the patch of low friction layer is formed from plastic.

Optionally, the patch of low friction layer has a substantially circular, rectangular or rounded-rectangular shape.

Optionally, the connecting means is a hook and loop connecting means, wherein one of the first part of the connecting means and the second part of the connecting means is a hook part, and the other of the of the first part of the connecting means and the second part of the connecting means is a loop part. Optionally, the first part of the protective apparatus comprises a layer of hook or loop material, partially covered by the low friction layer such that a portion of the layer of hook or loop material is exposed, said exposed portion providing the attachment part. Optionally, the layer of hook or loop material extends substantially over the entire first part of the protective apparatus. Optionally, the layer of hook or loop material is arranged to face the second part of the protective apparatus, when the first part is connected thereto and a region not covered by the patch of low friction layer is configured to slide against the second part of the protective apparatus. Optionally, the layer of hook or loop material is a soft loop material.

Optionally, the first part of the protective apparatus comprises a plurality of attachments parts and a plurality of corresponding patches of low friction layer.

Optionally, the patch of low friction layer comprises an adhesive layer configured to attach the patch of low friction layer to the rest of the part of the protective apparatus.

Optionally, the first part of the protective apparatus is an interface layer configured to interface with an object or person to be protected. Optionally, the first part of the protective apparatus comprises a layer of comfort padding.

According to a second aspect of the disclosure there is provided protective apparatus comprising: a first part according to an one of the preceding claims; a second part; and at least one respective second part of the connecting means, attached to the second part of the apparatus.

Optionally, the first and second parts of the apparatus are configured to move relative to each other in the lateral direction.

Optionally, the apparatus comprises a low friction interface between the first and second parts of the apparatus.

Optionally, at least one of the first part and the second part of the apparatus comprises a protective layer, optionally an energy absorbing layer or a hard shell, configured to protect against an impact to the apparatus. Optionally, one of the first and second parts comprises an interface layer configured to interface with an object or person to be protected. Optionally, the first part comprises an interface layer configured to interface with an object or person to be protected and the second part comprises a protective layer, optionally an energy absorbing layer or a hard shell, configured to protect against an impact to the apparatus.

Optionally, the apparatus is a helmet.

Optionally, the apparatus is body armour.

According to a third aspect of the disclosure there is provided patch of low friction layer for use in the part of a protective apparatus, or protective apparatus of any preceding aspect.

Optionally, the patch of low friction layer comprises a layer of adhesive configured to be attached to the first part of the protective apparatus.

It should be noted that the Figures are schematic, the proportions of the thicknesses of the various layers, and/or of any gaps between layers, depicted in the Figures have been exaggerated for the sake of clarity and can of course be adapted according to need and requirements.

Although the examples described below relate to helmets, it should be understood that the invention applies generally to protective apparatuses, including other types of headgear and other protective apparel.

Protective apparatuses can be understood to have parts corresponding to the parts of the helmets described below. For example, protective apparatuses may have a layered structure corresponding to the layered structure of the described helmets.

Terms that are specific to a helmet, such as “radial direction” can be understood to have equivalents in the context of other protective equipment, such as “thickness direction”. A “wearer” is to generally understood as corresponding to an object that is to be protected by the protective apparatus, and “head” as a specific part of the object, e.g. a different body part, with which the apparatus is in contact.

General features of the example helmets are described below with reference to.

show example helmetscomprising an energy absorbing layer. The purpose of the energy absorbing layeris to absorb and dissipate energy from an impact in order to reduce the energy transmitted to the wearer of the helmet. Within the helmet, the energy absorbing layermay be the primary energy absorbing element. Although other elements of the helmetmay absorb that energy to a more limited extent, this is not their primary purpose.

The energy absorbing layermay absorb energy from a radial component of an impact more efficiently than a tangential component of an impact. The term “radial” generally refers to a direction substantially toward the centre of the wearers head, e.g. substantially perpendicular to an outer surface of the helmet. The term “tangential” may refer to a direction substantially perpendicular to the radial direction, in a plane comprising the radial direction and the impact direction.

The energy absorbing layermay be formed from an energy absorbing material, such as a foam material. Preferable such materials include expanded polystyrene (EPS), expanded polypropylene (EPP), expanded polyurethane (EPU), vinyl nitrile foam; or strain rate sensitive foams such as those marketed under the brand-names Poron™ and D3O™.

Alternatively, or additionally, the energy absorbing layermay have a structure that provides energy absorbing characteristics. For example, the energy absorbing layermay comprise deformable elements, such as cells or finger-like projections, that deform upon impact to absorb and dissipate the energy of an impact.

As illustrated in, the energy absorbing layerof the helmetis may be divided into outer and inner partsA,B.

As illustrated in, the energy absorbing layermay be divided into multiple parts arranged adjacent each other in the circumferential direction of the helmet.shows such a helmet of the type shown in, with the inner partsB being formed in front and back partsC andD.

The energy absorbing layeris not limited to one specific arrangement or material. The energy absorbing layermay be provided by multiple layers having different arrangements, i.e. formed from different materials or having different structures. The energy absorbing layermay be a relatively thick layer. For example, it may be the thickest layer of the helmet.

show example helmetscomprising an outer layer. The purpose of the outer layermay be to provide rigidity to the helmet. This may help spread the impact energy over a larger area of the helmet. The outer layermay also provide protection against objects that might pierce the helmet. Accordingly, the outer shellmay be a relatively strong and/or rigid layer, e.g. compared to an energy absorbing layer. The outer layermay be a relatively thin layer, e.g. compared to an energy absorbing layer.

The outer layermay be formed from a relatively strong and/or rigid material. Preferable such materials include a polymer material such as polycarbonate (PC), polyvinylchloride (PVC) or acrylonitrile butadiene styrene (ABS) for example. Advantageously, the polymer material may be fibre-reinforced, using materials such as glass-fibre, Aramid, Twaron, carbon-fibre and/or Kevlar.

As shown in, one or more outer platesmay be mounted to the outer layerof the helmet. The outer platesmay be formed from a relatively strong and/or rigid material, for example from the same types of materials as from which the outer layermay be formed. The selection of material used to form the outer platesmay be the same as, or different from, the material used to form the outer layer.

In some example helmets, the outer layerand/or the energy absorbing layermay be adjustable in size in order to provide a customised fit. For example the outer layermay be provided in separate front and back parts. The relative position of the front and back parts may be adjusted to change the size of the outer layer. In order to avoid gaps in the outer layer, the front and back parts may overlap. The energy absorbing layermay also be provided in separate front and back parts (e.g. as shown in). These may be arranged such that the relative position of the front and back parts may be adjusted to change the size of the energy absorbing layer. In order to avoid gaps in the energy absorbing layer, the front and back parts may overlap.

show example helmetscomprising an interface layer. Although not shown in, these example helmets may also comprise an interface layer. The purpose of the interface layermay be to provide an interface between the helmetand the wearer. In some arrangements, this may improve the comfort of the wearer. The interface layermay be provided to mount the helmeton the head of a wearer. The interface layermay be provided as a single part or in multiple sections.

The interface layermay be configured to at least partially conform to the head of the wearer. For example, the interface layermay be elasticated and/or may comprise an adjustment mechanism for adjusting the size of the interface layer. In an arrangement, the interface layermay engage with the top of a wearer's head. Alternatively, or additionally, the interface layermay comprise an adjustable band configured to encircle the wearer's head.

The interface layermay comprise comfort paddingA. Multiple sections of comfort paddingA may be provided. The comfort paddingA may be provided on a substrateB for mounting the comfort padding to the rest of the helmet.

The purpose of the comfort paddingA is to improve comfort of wearing the helmet and/or to provide a better fit. The comfort paddingA may be formed from a relatively soft material, e.g. compared to the energy absorbing layerand/or the outer layer. The comfort paddingA may be formed from a foam material. However, the foam material may be of lower density and/or thinner than foam materials used for the energy absorbing layer. Accordingly, the comfort paddingA will not absorb a meaningful amount of energy during an impact, i.e. for the purposes of reducing the harm to the wearer of the helmet. Comfort padding is well recognised in the art as being distinct from energy absorbing layers, even if they may be constructed from somewhat similar materials.

The interface layer, and/or comfort paddingA that may be part of it, may be removable. This may enable the interface layerand/or comfort passingA to be cleaned and/or may enable the provision of an interface layer and/or comfort paddingA that is configured to fit a specific wearer.