Connector, kit of parts and helmet for a helmet

Abstract

A connector for a helmet connecting an inner part and an outer part of the helmet, the connector comprising: an anchor point configured to be connected to the outer part of the helmet, arranged at a distal end of the connector; a substantially helical resilient portion having a first end connected to the anchor point, extending substantially helically from the anchor point at least partially around a first axis extending from the anchor point in a first direction; a connection part connected to a second end opposite the first end of the resilient portion, a radial outer profile of the connection part at least partially surrounding the first axis, the connection part being arranged at a proximal end of the connector and configured to be connected to the inner part of the helmet; wherein the resilient portion is configured to deform to allow the anchor point to move relative to the connection part in a direction perpendicular to the first direction, so as to allow relative sliding between the inner part and the outer part of the helmet. The connector of the present disclosure can allow sufficient relative movement between the inner part and the outer part to allow the helmet to better redirect impact energy.

Description

Technical Field

[0001] This disclosure relates to a connector for a helmet, a component kit, and a helmet including the connector. Background Technology

[0002] Impact protection devices are typically designed to reduce the energy transferred to an object (such as a person to be protected) upon impact. This can be achieved through energy-absorbing devices, energy-redirecting devices, or a combination thereof. Energy-absorbing devices may include energy-absorbing materials (such as foam materials) or structures configured to deform elastically and / or plastically in response to impact. Energy-redirecting devices may include structures configured to slide, shear, or otherwise move in response to impact.

[0003] Impact protection devices include protective clothing used to protect the wearer. Protective clothing including energy-absorbing and / or energy-redirecting devices is known. For example, such devices are widely used in protective helmets (e.g., helmets).

[0004] Examples of helmets that include energy-absorbing and energy-redirecting devices include WO 2001 / 045526 and WO2011 / 139224 (both incorporated herein by reference). Specifically, these helmets include at least one layer formed of energy-absorbing material and at least one layer that is movable relative to the helmet wearer's head upon impact.

[0005] Implementing moving parts in a helmet is challenging. For example, ensuring that friction between moving parts can be overcome under impact to allow sufficient relative movement between them can be challenging. Ensuring that the helmet can be manufactured and assembled relatively easily can also be challenging. Utility Model Content

[0006] The purpose of this disclosure is to provide a connector and helmet for helmets that at least partially solve some of the problems described above.

[0007] According to a first aspect of this disclosure, a connector for a helmet is provided that connects an inner part and an outer part of the helmet to allow relative sliding between the inner and outer parts. The connector includes: an anchor point configured to connect to the outer part of the helmet and disposed at a distal end of the connector; a generally helical resilient portion having a first end connected to the anchor point and extending substantially helically from the anchor point about a first axis extending in a first direction from the anchor point; a connecting member connected to a second end opposite the first end of the resilient portion, the radially outer contour of the connecting member at least partially about the first axis, the connecting member disposed at a proximal end of the connector and configured to connect to the inner part of the helmet; wherein the resilient portion is configured to deform to allow the anchor point to move relative to the connecting member in a direction perpendicular to the first direction, thereby allowing relative sliding between the inner and outer parts of the helmet; and wherein the anchor point, the resilient portion, and the connecting member are integrally formed from the same material.

[0008] Alternatively, the connector may be made of plastic material.

[0009] Alternatively, the connector may be made of polycarbonate.

[0010] Optionally, the anchor point includes the first part of the two-part snap-fit ​​connector.

[0011] Optionally, the anchor point includes a snap pin extending in a first direction, the snap pin being configured to be received by a corresponding snap basket in the outer part of the helmet.

[0012] Optionally, the connecting component has an axial outer surface that is substantially arranged in a plane perpendicular to a first axis facing the first direction.

[0013] Optionally, the connecting member includes opposing and paired first and second flanges spaced apart by a gap, the first and second flanges being configured to snap into corresponding holes in the helmet's inner member, such that the helmet's inner member is held within the gap for connection. Optionally, the connecting member includes a plurality of opposing and paired first and second flanges arranged about a first axis at the radially outer edge of the connecting member. Optionally, at least one of the first and second flanges has an inclined surface relative to the plane of the connector, the inclined surface being configured to facilitate insertion into a hole in the helmet's inner member by deforming the corresponding flange upon insertion into the helmet's inner member.

[0014] Alternatively, the connecting component is substantially annular. Alternatively, the connecting component is substantially circular in shape.

[0015] Alternatively, the elastic portion is configured to deform substantially by bending of the material forming the elastic portion.

[0016] According to a second aspect, a helmet is provided, comprising: an outer part having an inner surface arranged radially inward and facing the wearer's head in use; and an inner part disposed as an interface layer radially inward of the outer part, the interface layer being configured to provide an interface between the helmet and the wearer, wherein the interface layer is disposed adjacent to the inner surface of the outer part and configured to slide relative to the outer part against its inner surface in response to a tilting impact on the helmet, wherein the interface layer includes at least a sliding layer disposed adjacent to and facing the inner surface of the outer part; and a connector according to a first aspect for connecting the outer part and the inner part.

[0017] Optionally, the outer part of the helmet includes a recess for receiving a resilient portion of the connector. Optionally, the resilient portion projects substantially from the plane defined by the sliding layer into the recess, and the recess is arranged to surround the resilient portion. Optionally, the recess is arranged to allow deformation of the resilient portion, allowing the interface layer to slide relative to the outer part. Optionally, the recess is configured to allow deformation of the resilient portion, allowing the interface layer to slide relative to the outer part, while the resilient portion remains substantially projecting beyond the plane defined by the remainder of the sliding layer.

[0018] Optionally, the outer components of the helmet include a buckle basket configured to connect to a buckle pin forming an anchor point.

[0019] Optionally, the elastic portion is positioned at the substantially central part of the interface layer so as to substantially correspond to the top of the wearer's head during use.

[0020] Alternatively, the connector may be formed of the same material as the sliding layer.

[0021] Optionally, the elastic portion is configured to deform, allowing the interface layer to slide relative to the outer component in substantially any direction within the plane of the sliding layer. Alternatively, the elastic portion is configured to deform, allowing the interface layer to slide relative to the outer component, such that the interface layer can be displaced within the plane of the sliding layer by at least 10 mm or at least 15 mm.

[0022] Optionally, the sliding layer is a rigid layer. Optionally, the sliding layer is formed of a polymer, optionally formed of one or more of polypropylene, polycarbonate, polytetrafluoroethylene, acrylonitrile-butadiene-styrene, polyvinyl chloride, nylon, perfluoroalkoxyalkane, fluorinated ethylene-propylene, polyethylene, polyketone, ultra-high molecular weight polyethylene, and Teflon™.

[0023] Optionally, the sliding layer is molded to have a predetermined shape that substantially corresponds to the shape of the inner surface of the outer component.

[0024] Optionally, the interface layer includes a comfort pad facing the wearer during use.

[0025] Optionally, the external component includes an energy-absorbing layer. Optionally, the energy-absorbing layer is formed of a polymer foam material.

[0026] Optionally, the outer component includes a hard outer layer.

[0027] According to a third aspect of this disclosure, a component kit for forming a helmet according to the second aspect is provided, comprising: an interface layer for the helmet, configured to be disposed radially inside an outer component during helmet formation and configured to provide an interface between the helmet and a wearer, wherein the interface layer is configured to be disposed at a location adjacent to an inner surface of the outer component and configured to slide relative to the inner surface of the outer component in response to a tilting impact on the helmet during helmet formation and use, the interface layer including at least a sliding layer disposed at a location adjacent to and facing the inner surface of the outer component; and a connector according to the first aspect.

[0028] Optionally, the component kit also includes: an outer component for the helmet, the outer component having an inner surface arranged radially inward and facing the wearer's head during helmet formation and use.

[0029] The connector and helmet according to this disclosure allow sufficient relative movement between the inner and outer parts, thereby enabling the helmet to better redirect impact energy without transmitting it to the wearer's head, thus providing better protection for the wearer's head. Attached Figure Description

[0030] The present disclosure is described in detail below with reference to the accompanying drawings, in which:

[0031] Figure 1 A cross-section through the first example helmet is schematically shown;

[0032] Figure 2 A cross-section through the second example helmet is schematically shown;

[0033] Figure 3 A cross-section through the third example helmet is schematically shown;

[0034] Figure 4 A cross-section through the fourth example helmet is schematically shown;

[0035] Figure 5 The fifth example helmet is shown;

[0036] Figure 6 The sixth example helmet is shown;

[0037] Figure 7 A portion of the sixth example helmet is shown;

[0038] Figure 8A first view of an example connector is shown;

[0039] Figure 9 A second view of the example connector is shown;

[0040] Figure 10 A third view of an example connector is shown;

[0041] Figure 11 A second example connector is shown. Detailed Implementation

[0042] It should be noted that the accompanying drawings are schematic, and for clarity, the proportions of the thicknesses of the various layers and / or any gaps between the layers depicted in the drawings are exaggerated and can of course be adjusted as needed and required.

[0043] Although the examples described below involve helmets, it should be understood that this disclosure generally applies to protective equipment, including other types of hats and other protective clothing.

[0044] A protective device can be understood as having components corresponding to those of the helmet described below. For example, a protective device may have a layered structure corresponding to the layered structure of the helmet described.

[0045] Helmet-specific terms, such as “radial,” can be understood to have equivalent meanings in the context of other protective equipment (e.g., “thickness direction”). “Wearer” is generally understood to correspond to the object to be protected by the protective device, and “head” is a specific part of the object (i.e., the different body part in contact with the device).

[0046] The following is for reference Figures 1 to 5 Describe the general features of the example helmet.

[0047] Figures 1 to 5 An example helmet 1 including an energy-absorbing layer 3 is shown. The purpose of the energy-absorbing layer 3 is to absorb and dissipate energy from an impact, thereby reducing the energy delivered to the helmet wearer. Within the helmet 1, the energy-absorbing layer may be the primary energy-absorbing element. Although other elements of the helmet 1 may absorb this energy to a more limited extent, this is not their primary purpose.

[0048] The energy-absorbing layer 3 can more effectively absorb the radial component of energy from an impact rather than the tangential component. The term "radial" generally refers to a direction roughly toward the center of the wearer's head, for example, roughly perpendicular to the outer surface of the helmet 1. The term "tangential" refers to a direction substantially perpendicular to the radial direction in a plane that includes both the radial and impact directions.

[0049] The energy-absorbing layer can be formed of an energy-absorbing material, such as a foam material. Preferred such materials include expanded polystyrene (EPS), expanded polypropylene (EPP), expanded polyurethane (EPU), vinyl nitrile foam; or strain rate sensitive foam (e.g., under the brand name Poron). TM and D3O TM Those being sold).

[0050] Alternatively or additionally, the energy-absorbing layer may have a structure that provides energy absorption properties. For example, the energy-absorbing layer may include deformable elements, such as cells or finger-like protrusions, which deform upon impact to absorb and dissipate the energy of the impact.

[0051] In some examples, the energy-absorbing layer 3 of helmet 1 is divided into an outer part and an inner part.

[0052] In some examples, the energy-absorbing layer 3 can be divided into multiple components arranged adjacent to each other in the circumferential direction of the helmet. For example, inner components can be formed in the front and rear components.

[0053] The energy-absorbing layer is not limited to a specific arrangement or material. The energy-absorbing layer 3 can be provided by multiple layers with different arrangements, i.e., formed of different materials or with different structures. The energy-absorbing layer 3 can be a relatively thick layer. For example, it can be the thickest layer of the helmet 1.

[0054] Figures 1 to 5 An example helmet 1 including an outer layer 2 is shown. The purpose of the outer layer 2 may be to provide rigidity to the helmet. This can help distribute impact energy over a larger area of ​​the helmet 1. The outer layer 2 may also provide protection against objects that could puncture the helmet 1. Therefore, for example, the outer layer may be a relatively strong and / or rigid layer compared to the energy-absorbing layer 3. For example, the outer layer 2 may be a relatively thin layer compared to the energy-absorbing layer 3. The outer layer 2 may be an outer shell.

[0055] The outer layer 2 can be formed of a relatively strong and / or rigid material. Preferred such materials include polymeric materials, such as polycarbonate (PC), polyvinyl chloride (PVC), or acrylonitrile butadiene styrene (ABS). Advantageously, the polymeric material can be fiber-reinforced, using materials such as glass fiber, aramid, Twaron, carbon fiber, and / or Kevlar.

[0056] In an example not shown, one or more outer plates may be mounted on the outer layer 2 of the helmet 1. The outer plates may be formed of a relatively strong and / or rigid material, for example, of the same type of material that can form the outer layer 2. The choice of material for forming the outer plates may be the same as or different from the material used to form the outer layer 2.

[0057] In some exemplary helmets, the dimensions of the outer layer 2 and / or the energy-absorbing layer 3 can be adjustable to provide a customized fit. For example, the outer layer 2 can be disposed in separate front and rear components. The relative positions of the front and rear components can be adjusted to change the dimensions of the outer layer 2. To avoid gaps in the outer layer 2, the front and rear components can overlap. The energy-absorbing layer 3 can also be disposed in separate front and rear components. These can be arranged such that the relative positions of the front and rear components can be adjusted to change the dimensions of the energy-absorbing layer 3. To avoid gaps in the energy-absorbing layer 3, the front and rear components can overlap.

[0058] Figures 1 to 4 An example helmet 1 including an interface layer 4 is shown. The purpose of the interface layer 4 may be to provide an interface between the helmet and the wearer. In some arrangements, this can improve the wearer's comfort. The interface layer 4 can be provided to mount the helmet on the wearer's head. The interface layer 4 may be provided as a single component or as multiple segments.

[0059] Interface layer 4 can be configured to at least partially conform to the wearer's head. For example, interface layer 4 can be elastic and / or may include adjustment mechanisms for adjusting the size of interface layer 4. In one arrangement, the interface layer may engage with the top of the wearer's head. Alternatively or additionally, interface layer 4 may include an adjustable strap configured to wrap around the wearer's head.

[0060] Interface layer 4 may include a comfort pad 4A. Multiple segments of comfort pads 4A may be provided. The comfort pads 4A may be provided on the base 4B for attaching the comfort pads to the rest of the helmet 1.

[0061] The purpose of the comfort pad 4A is to improve helmet wearing comfort and / or provide a better fit. For example, compared to the energy-absorbing layer 3 and / or the outer layer 2, the comfort pad can be formed of a relatively soft material. The comfort pad 4A can be formed of a foam material. However, the foam material can have a lower density and / or be thinner than the foam material used for the energy-absorbing layer 3. Therefore, during an impact, i.e., to reduce injury to the helmet wearer, the comfort pad 4A will not absorb a significant amount of energy. Comfort pads are generally recognized in the art as distinct from energy-absorbing layers, even though they can be made of similar materials.

[0062] The interface layer 4 and / or the comfort pad 4A, which is part of it, may be removable. This allows the interface layer 4 and / or the comfort pad 4A to be cleaned and / or allows the interface layer 4 and / or the comfort pad 4A to be configured to fit a particular wearer.

[0063] In some examples, interface layer 4 may include a comfort liner attached to the base. The base may be bonded to the outside of the comfort liner. This bonding can be done by any means, such as by adhesive or by high-frequency welding or stitching. The base of the interface layer faces radially outward toward the outer parts of the helmet. For example, the base may be formed of a relatively hard or rigid material relative to energy-absorbing layer 3 and / or the comfort liner. For example, the base may be formed of a polymer material.

[0064] In other examples, interface layer 4 may consist only of the substrate and not the comfort liner; that is, the interface layer may be formed of a relatively hard or rigid material (e.g., relative to energy absorption layer 3). For example, interface layer 4 may be formed of a polymer material.

[0065] Straps (such as chin straps) can be installed to secure the helmet 1 to the wearer's head.

[0066] Figures 1 to 4 The helmet is configured such that the interface layer 4 can move (e.g., slide) in a tangential direction relative to the energy absorption layer 3 in response to an impact. Figures 1 to 4 As shown, the helmet 1 may also include a connector 5 between the energy-absorbing layer 3 and the interface layer 4, which allows relative movement between the energy-absorbing layer 3 and the interface layer 4 and simultaneously connects multiple components of the helmet together.

[0067] The purpose of helmet layers that move or slide relative to each other can be to redirect impact energy that would otherwise be transmitted to the wearer's head. This improves the protection provided to the wearer from the tangential component of the impact energy, which typically causes rotational acceleration of the wearer's head. This rotation is known to cause brain injury. Helmets with layers that move relative to each other have been shown to reduce the rotational acceleration of the wearer's head. A typical reduction might be around 25%, but in some cases it can be as high as 90%.

[0068] Preferably, the relative movement between the helmet layers results in a total offset of at least 0.5 cm, more preferably at least 1 cm, and even more preferably at least 1.5 cm between the outermost and innermost helmet layers. Preferably, the relative movement can occur in any direction, such as in the circumferential direction around the helmet, from left to right, from front to back, and in any direction in between.

[0069] Relative movement can be considered to occur essentially within a plane of the relevant range, even if the movement between layers can be rotational rather than linear. Therefore, the following can be referenced to movement in a plane.

[0070] Regardless of how the helmet layers are configured to move relative to each other, it is preferable that the relative movement (e.g., sliding) occurs under the typical forces of the impacts for which the helmet is designed (e.g., impacts expected to ensure the wearer's survival). These forces are significantly higher than those the helmet might experience during normal use. Impact forces tend to compress the helmet layers together, increasing the reaction forces between components and thus increasing friction. In cases where the helmet is configured with layers that slide relative to each other, the interfaces between them may need to be configured to slide even under the influence of high reaction forces experienced between them during an impact.

[0071] like Figures 1 to 5 As shown, a sliding interface can be provided between the layers of helmet 1 that are configured to slide relative to each other. At the sliding interface, surfaces slide against each other to achieve relative sliding between the layers of helmet 1. The sliding interface can be a low-friction interface. Therefore, a friction-reducing device can be provided at the sliding interface. The following will address... Figures 1 to 5 Each example helmet 1 shown further describes the example sliding interface.

[0072] Friction-reducing devices can be made of low-friction materials or lubricating materials. For example, they can be provided as continuous layers, multiple discrete patches, or portions of a material. In some examples, friction-reducing devices can be provided as a combination of layers of a specific material (such as one of the polymers below) and a lubricating material (as a coating).

[0073] Possible low-friction materials for friction-reducing devices include: polymers (e.g., polypropylene (PP), polycarbonate (PC), polytetrafluoroethylene (PTFE), acrylonitrile butadiene-styrene (ABS), polyvinyl chloride (PVC), nylon, perfluoroalkoxy alkane (PFA), fluorinated ethylene propylene (FEP), polyethylene (PE), and ultra-high molecular weight polyethylene (UHMWPE)), Teflon™, woven fabrics (e.g., Tamarak™), and nonwoven fabrics (e.g., felt). These low-friction materials can have a thickness of approximately 0.1–5 mm, but other thicknesses are also possible depending on the material chosen and the desired performance. Possible lubricants include: oils, polymers, microspheres, or powders. Combinations of the above can be used.

[0074] In one example, the low-friction or lubricating material may be a material containing a polysiloxane. Specifically, the material may include (i) an organic polymer, a polysiloxane, and a surfactant; (ii) an organic polymer and copolymers based on the polysiloxane and the organic polymer; or (iii) a non-elastomeric crosslinked polymer obtained or available by crosslinking the polysiloxane and the organic polymer. Preferred options for such materials are described in WO 2017 / 148958 (the entire contents of which are incorporated herein by reference).

[0075] In one example, the low-friction material or lubricant may include (i) an olefin polymer, (ii) a lubricant, and optionally a mixture of one or more other agents. Preferred options for such a material are described in WO 2020 / 115063 (the entire contents of which are incorporated herein by reference).

[0076] In one example, low-friction materials or lubricants may include materials with a density ≤960 kg / m³. 3 The ultra-high molecular weight (UHMW) polymer, preferably an olefin polymer, is described in WO2020 / 115063.

[0077] In one example, the low-friction or lubricating material may include polyketone. Preferred options for such a material are described in WO 2020 / 260185 (the entire contents of which are incorporated herein by reference).

[0078] In some arrangements, it may be desirable to configure low-friction interfaces such that the static and / or dynamic coefficients of friction between the materials forming the sliding surfaces at the sliding interface are between 0.001 and 0.3 and / or less than 0.15. The coefficient of friction can be tested using standard methods, such as the standard test method ASTM D1894.

[0079] The friction-reducing device may be disposed on one or two of the layers of helmet 1 configured to slide relative to each other, or it may be an integral part of one or two of the layers of helmet 1 configured to slide relative to each other. In some examples, the helmet layers may be configured to have a dual function, including functioning as a friction-reducing device. Alternatively or additionally, the friction-reducing device may be separate from the layers of helmet 1 configured to slide relative to each other, but disposed between the layers.

[0080] For example, the friction-reducing device can be integrated into the interface layer 4 (e.g., substrate 4B). In this arrangement, a portion of the interface layer 4 at the sliding interface can be formed of one of the aforementioned low-friction materials. The friction-reducing device can be alternatively or additionally disposed on the inner surface of the energy-absorbing layer 3. In this arrangement, at the sliding interface, the energy-absorbing layer 3 may include an additional layer formed of one of the aforementioned low-friction materials.

[0081] Figures 1 to 4 Connector 5 is schematically shown. Connector 5 is configured to connect two layers of the helmet while simultaneously allowing relative movement (e.g., sliding or shearing) between the layers. (As shown in the image) Figures 1 to 4 Compared to the diagram shown, different numbers of connectors 5 can be provided. Connector 5 can be located in... Figures 1 to 4 The different locations shown are, for example, located on the outer edge of helmet 1 instead of the center.

[0082] Typically, connector 5 includes: a first attachment member and a second attachment member, respectively configured to attach to a first part and a second part of the helmet; and a deformable member between the first attachment member and the second attachment member, the deformable member allowing the first attachment member and the second attachment member to move relative to each other so as to move between the first part and the second part of the helmet. Connector 5 can absorb some impact energy through deformation.

[0083] Figures 1 to 5 The specific layout of each example helmet shown is described below.

[0084] Figure 1 The helmet 1 shown includes an outer layer 2, an energy-absorbing layer 3, and an interface layer 4. The interface layer 4 is a separate layer and includes a comfort pad.

[0085] Figure 1 The helmet 1 is configured such that the interface layer 4 can slide relative to the energy-absorbing layer 3 in response to an impact. The sliding interface is located between the interface layer 4 and the energy-absorbing layer 3.

[0086] A sliding layer 6 is disposed on the surface of the energy-absorbing layer 3 facing the sliding interface. The sliding layer 6 may be molded to the energy-absorbing layer 3 or otherwise attached thereto. For example, the sliding layer 6 may be formed of a relatively hard material relative to the energy-absorbing layer 3. The sliding layer 6 is configured to provide a friction-reducing device to reduce friction at the sliding interface. This can be achieved by forming the sliding layer 6 from a low-friction material, such as PP, PC, PTFE, ABS, PVC, nylon, PFA, FEP, PE, and UHMWPE. Alternatively or additionally, this can be achieved by applying a low-friction coating to the sliding layer 6 and / or applying a lubricant to the sliding layer 6.

[0087] Alternatively or additionally, friction reduction devices for reducing friction at the sliding interface can be provided by forming an energy-absorbing layer 3 from a low-friction material, by applying a low-friction coating to the energy-absorbing layer 3, and / or by applying a lubricant to the energy-absorbing layer 3.

[0088] Figure 1 The helmet 1 shown also includes a connector 5 attached to the interface layer 4. The connector is also connected to a sliding layer 6 to allow relative sliding between the energy-absorbing layer 3 and the interface layer 4. Alternatively or additionally, one or more connectors 5 may be connected to another portion of the remainder of the helmet 1 (e.g., the energy-absorbing layer 3 or the outer layer 2). Connectors 5 may also be connected to two or more portions of the remainder of the helmet 1.

[0089] It should be understood that this arrangement of energy-absorbing layer 3 and interface layer 4 can be added to any helmet described herein.

[0090] Figure 2 The helmet 1 shown includes an outer layer 2, an energy-absorbing layer 3, and an interface layer 4. The interface layer 4 is provided as multiple independent segments, each of which includes a comfort pad.

[0091] Figure 2 The helmet 1 is configured such that a section of the interface layer 4 can slide relative to the energy-absorbing layer 3 in response to an impact. A sliding interface is provided between the section of the interface layer 4 and the energy-absorbing layer 3.

[0092] A sliding layer 6 is disposed on the surface of the energy-absorbing layer 3 facing the sliding interface. The sliding layer 6 may be molded to the energy-absorbing layer 3 or otherwise attached thereto. For example, the sliding layer 6 may be formed of a relatively hard material relative to the energy-absorbing layer 3. The sliding layer 6 is configured to provide a friction-reducing device to reduce friction at the sliding interface. This can be achieved by forming the sliding layer 6 from a low-friction material, such as PP, PC, PTFE, ABS, PVC, nylon, PFA, FEP, PE, and UHMWPE. Alternatively or additionally, this can be achieved by applying a low-friction coating to the sliding layer 6 and / or applying a lubricant to the sliding layer 6.

[0093] Alternatively or additionally, friction reduction devices for reducing friction at the sliding interface can be provided by forming an energy-absorbing layer 3 from a low-friction material, by applying a low-friction coating to the energy-absorbing layer 3, and / or by applying a lubricant to the energy-absorbing layer 3.

[0094] Figure 2 The helmet 1 shown also includes connectors 5 attached to each individual segment of the interface layer 4. Connectors 5 are also attached to a sliding layer 6 to allow relative sliding between segments of the energy-absorbing layer 3 and the interface layer 4. Alternatively or additionally, one or more connectors 5 may be connected to another portion of the remaining parts of the helmet 1 (e.g., the energy-absorbing layer 3 or the outer layer 2). Connectors 5 may also be connected to two or more portions of the remaining parts of the helmet 1.

[0095] It should be understood that this arrangement of energy-absorbing layer 3 and interface layer 4 can be added to any helmet described herein.

[0096] Figure 3 The helmet 1 shown includes an outer layer 2, an energy-absorbing layer 3, and an interface layer 4. The interface layer 4 is configured as a separate layer and includes a comfort liner 4A attached to a base 4B. The base 4B can be bonded to the outside of the comfort liner 4A. This bonding can be done by any means, such as by adhesives or by high-frequency welding or stitching.

[0097] Figure 3 The helmet 1 is configured such that the interface layer 4 can slide relative to the energy-absorbing layer 3 in response to an impact. The sliding interface is located between the interface layer 4 and the energy-absorbing layer 3.

[0098] The substrate 4B of interface layer 4 faces the sliding interface. For example, the substrate 4B may be formed of a relatively hard material relative to the energy-absorbing layer 3 and / or the comfort pad 4A. The substrate 4B is configured to provide a friction-reducing device to reduce friction at the sliding interface. This can be achieved by forming the substrate 4B from a low-friction material, such as PP, PC, PTFE, ABS, PVC, nylon, PFA, FEP, PE, and UHMWPE. Alternatively or additionally, this can be achieved by applying a low-friction coating to the substrate 4B and / or applying a lubricant to the substrate 4B. In an alternative example, the substrate 4B may be formed of a fabric material, optionally coated with a low-friction material.

[0099] Alternatively or additionally, friction reduction devices for reducing friction at the sliding interface can be provided by forming an energy-absorbing layer 3 from a low-friction material, by applying a low-friction coating to the energy-absorbing layer 3, and / or by applying a lubricant to the energy-absorbing layer 3.

[0100] Figure 3 The helmet 1 shown also includes a connector 5 connected to the interface layer 4. The connector is also connected to the energy-absorbing layer to allow relative sliding between the energy-absorbing layer 3 and the interface layer 4. Alternatively or additionally, one or more connectors 5 may be connected to another portion of the remainder of the helmet 1 (e.g., the outer layer 2). Connectors 5 may also be connected to two or more portions of the remainder of the helmet 1.

[0101] It should be understood that this arrangement of energy-absorbing layer 3 and interface layer 4 can be added to any helmet described herein.

[0102] Figure 4 The helmet 1 shown includes an outer layer 2, an energy-absorbing layer 3, and an interface layer 4. The interface layer 4 is configured as multiple independent segments, each of which includes a comfort liner 4A attached to a base 4B. The base 4B can be bonded to the outside of the comfort liner 4A. This bonding can be achieved by any means, such as by adhesives or by high-frequency welding or stitching.

[0103] Figure 4 The helmet 1 is configured such that the interface layer 4 can slide relative to the energy-absorbing layer 3 in response to an impact. The sliding interface is located between the interface layer 4 and the energy-absorbing layer 3.

[0104] The substrate 4B of each segment of the interface layer 4 faces the sliding interface. For example, the substrate 4B may be formed of a relatively hard material relative to the energy-absorbing layer 3 and / or the comfort pad 4A. The substrate 4B is configured to provide a friction-reducing device to reduce friction at the sliding interface. This can be achieved by forming the substrate 4B from a low-friction material, such as PP, PC, PTFE, ABS, PVC, nylon, PFA, FEP, PE, and UHMWPE. Alternatively or additionally, this can be achieved by applying a low-friction coating to the substrate 4B and / or applying a lubricant to the substrate 4B. In an alternative example, the substrate 4B may be formed of a fabric material, optionally coated with a low-friction material.

[0105] Alternatively or additionally, friction reduction devices for reducing friction at the sliding interface can be provided by forming an energy-absorbing layer 3 from a low-friction material, by applying a low-friction coating to the energy-absorbing layer 3, and / or by applying a lubricant to the energy-absorbing layer 3.

[0106] Figure 4 The helmet 1 shown also includes a connector 5 attached to a segment of the interface layer 4. The connector 5 is also connected to the energy-absorbing layer 3 to allow relative sliding between the energy-absorbing layer 3 and the interface layer 4. Alternatively or additionally, one or more connectors 5 may be connected to another portion of the remaining parts of the helmet 1 (e.g., the outer layer 2). The connector 5 may also be connected to two or more portions of the remaining parts of the helmet 1.

[0107] It should be understood that this arrangement of energy-absorbing layer 3 and interface layer 4 can be added to any helmet described herein.

[0108] Some helmets (e.g.) Figures 1 to 4 The helmet shown is configured to cover the top portion of the head, and the aforementioned helmet structure is suitably located within the helmet to cover the top portion of the head. For example, a helmet may be provided to substantially cover the wearer's forehead, the top of the head, the back of the head, and / or the temples. The helmet may substantially cover the wearer's skull.

[0109] Some helmets can be configured to cover other parts of the head, alternatively or additionally covering the top portion. For example, such as Figure 5 The helmet shown can cover the wearer's cheeks and / or chin. Such a helmet can be configured to essentially cover the wearer's jaw. Figure 5 Helmets of the type shown are typically referred to as full-face helmets. For example... Figure 5 As shown, cheek pads 7 can be installed on both sides (i.e., the left and right sides) of the helmet 1. Cheek pads 7 can be placed inside the outer layer 2 of the helmet 1 to protect the wearer's face from impact.

[0110] The cheek pad 7 may have the same layered structure as the example helmet described above. For example, the cheek pad 7 may include one or more energy-absorbing layers as described above and / or interface layers as described above and / or layers that move relative to each other as described above. Optionally, the layers may be connected via connectors as described above. Alternatively or additionally, the cheek pad 7 itself may be configured to move relative to the outer layer 2 and may optionally be connected to the outer layer via connectors as described above.

[0111] This disclosure generally relates to how to retain an inner component 4 within an outer component of a helmet 1. The inner component may be the interface layer 4 as described above. The outer component of the helmet 1 may refer to the main portion of the helmet 1 located radially outside the interface layer 4 (e.g., the outer shell). (Refer to the above...) Figures 1 to 5 The external component may include an energy absorption layer 3 and / or an outer layer 2.

[0112] Figure 6 An example helmet 1 according to this disclosure is schematically shown. As shown, helmet 1 includes an outer component (energy-absorbing layer 3 in this example) and an interface layer 4. The energy-absorbing layer 3 and the interface layer 4 can be referenced as above. Figures 1 to 4 As described above, in other examples, the outer component may alternatively or additionally include a rigid outer layer 2.

[0113] like Figure 6 As shown, the outer component includes an inner surface arranged radially inward and facing the wearer's head during use. As shown, an interface layer 4 is disposed radially inward of the outer component 3 and positioned adjacent to the inner surface of the outer component 3. Furthermore, the interface layer 4 is configured to slide relative to the inner surface of the outer component 3 in response to tilting impacts on the helmet. Therefore, as referenced above... Figures 1 to 5 A sliding interface is provided between the outer component 3 and the interface layer 4.

[0114] exist Figure 6 In the example, the interface layer is the sliding layer 4. In other examples, the interface layer may include an additional layer (e.g., a comfort pad) arranged radially inside the sliding layer. Typically, the interface layer includes at least the sliding layer 4 located adjacent to and facing the inner surface of the outer component 3.

[0115] The sliding layer 4 can be a rigid layer. The sliding layer can be molded into a predetermined shape that substantially corresponds to the shape of the inner surface of the outer component 3. The sliding layer is formed of a polymer, optionally one or more of polypropylene, polycarbonate, polytetrafluoroethylene, acrylonitrile-butadiene-styrene, polyvinyl chloride, nylon, perfluoroalkoxyalkane, fluorinated ethylene-propylene, polyethylene, polyketone, ultra-high molecular weight polyethylene, and Teflon™.

[0116] like Figure 6As schematically shown, according to this disclosure, the outer component 3 and the sliding layer 4 are connected by a connector 40. The connector 40 includes at least one elastic portion 41 disposed at the interface between the sliding layer 4 of the helmet and the outer component 3. As shown, the elastic portion 41 is connected to the outer component 3 via an anchor point 42 and to the interface layer via a connecting member 43. Thus, the elastic portion holds the interface layer 4 in a position adjacent to the inner surface of the outer component 3.

[0117] like Figure 6 As shown, connector 40 can be positioned in the substantially central portion of sliding layer 4 (which in use substantially corresponds to the top of the wearer's head). As illustrated, only a single connector 40 can be positioned between outer component 3 and sliding layer 4. In other examples, multiple connectors 40 can be positioned in the central portion and / or other portions (e.g., at the locations shown in any of the preceding figures).

[0118] Figure 7 yes Figure 6 A close-up view of the interface between the sliding layer 4 and the outer component 3. (See attached image.) Figure 7 As shown, connector 40 is configured to deform so that sliding layer 4 can slide relative to outer part 3 against inner surface of outer part 3 in response to tilting impact on helmet. Figure 7 The sliding layer 4 is shown to be horizontally displaced from right to left in the figure (as indicated by the arrows), while the elastic portion 41 is compared to... Figure 6 It has deformed.

[0119] The elastic portion 41 can be configured to deform such that the sliding layer 4 can slide relative to the outer component 3 in substantially any direction within the plane of the sliding layer 4. The elastic portion 41 can be configured to deform such that the sliding layer 4 can slide relative to the outer component 3, such that the sliding layer 4 can be displaced by at least 10 mm or at least 15 mm within the plane of the sliding layer 4.

[0120] like Figure 6 and Figure 7 As shown, the outer component 3 may include a recess 31 for receiving the elastic portion 41 when attached to the outer component 3. As shown, when the elastic portion 41 is attached to the outer component 3 of the helmet 1, the elastic portion 41 may protrude substantially beyond the plane defined by the remainder of the sliding layer 4 toward the outer component 3. As shown, the elastic portion 41 protrudes into the recess 31 and the recess 31 is arranged to surround the elastic portion 41.

[0121] In some examples, the recess can also provide additional functionality, such as providing ventilation channels inside the helmet 1.

[0122] like Figure 7As shown, the recess 31 is arranged to allow the elastic portion 41 to deform, enabling the sliding layer 4 to slide relative to the outer component 3. For example, as shown, the recess 31 may be wide enough to allow the elastic portion 41 to deform laterally within the plane of the sliding layer, while the elastic portion remains within the recess 31. As shown, when the elastic portion 41 deforms to allow the sliding layer 4 to slide relative to the outer component 3, the elastic portion 41 remains substantially protruding beyond the plane defined by the rest of the sliding layer 4.

[0123] It should be noted that Figure 6 and Figure 7 The illustrations are highly illustrative, particularly regarding the details of the elastic portion 41. Various examples of the elastic portion 41 are shown in the following figures and described further below.

[0124] Figures 8 to 10 Different views of an example connector 40 according to this disclosure are shown. As shown, an anchor point 42 configured to connect to an outer part of a helmet is disposed at the distal end of the connector 40. The anchor point may include a first part of a two-part snap-fit ​​connector. As shown, the anchor point 42 may include a snap pin that extends outward toward the outer part 3 of the helmet 1 in use, and the snap pin is configured to be received by a corresponding snap-basket in the outer part 3 of the helmet 1.

[0125] As shown in the figure, connector 40 includes a generally helical elastic portion 41. A first end of the elastic portion 41 is connected to an anchor point and extends substantially helically from the anchor point. The elastic portion 41 extends about a first axis in a first direction from the anchor point. Figure 8 and Figure 9 (The axis is basically perpendicular to the center) spirals outward.

[0126] The helical shape of the elastic portion 41 may include at least one full turn around the first axis. For example... Figure 8 and Figure 9 As shown, the helical shape of the elastic portion 41 may include approximately two full turns around the first axis. An integer number of turns may be better to improve the uniformity of the movement response in different directions.

[0127] The elastic portion 41 can be configured to deform such that the sliding layer 4 can slide relative to the outer component 3 in substantially any direction within the plane of the sliding layer 4. The elastic portion 41 can be configured to deform such that the sliding layer 4 can slide relative to the outer component 3, such that the sliding layer 4 is displaced by at least 10 mm or at least 15 mm within the plane of the sliding layer 4.

[0128] The second end of the elastic portion, opposite the first end, is connected to the connecting member 43. As shown, the connecting member 43, configured to connect to the inner part of the helmet, is arranged near the proximal end of the connector 40. As shown, the radial outer contour of the connecting member 43 also at least partially surrounds the first axis.

[0129] like Figures 8 to 10 As shown, the connecting component 43 has an axial outer surface ( Figure 8 and Figure 9 The outer surface of the connecting member 43 is substantially arranged in a plane perpendicular to a first axis facing the first direction. Therefore, when connected to the sliding layer 4, the outer surface of the connecting member 43 can be configured to be parallel to the surface of the sliding layer 4.

[0130] like Figure 6 and Figure 7 As shown, the connecting component 43 can be configured to be inserted into a corresponding hole in the sliding layer 4. Figure 8 and Figure 9 As shown, the connecting member 43 may include opposing and paired first flange 44 and second flange 45 separated by a gap. The first flange 44 and second flange 45 may be configured to snap into corresponding holes in the sliding layer 4, such that the sliding layer 4 is held within the gap for connection.

[0131] like Figure 8 and Figure 9 As shown, the connecting member 43 may include a plurality of opposing and paired first flanges 44 and second flanges 45 arranged around a first axis at the radial outer edge of the connecting member 43. Figure 8 and Figure 9 In the example shown, two pairs of first flanges and second flanges are provided that are spaced apart at regular intervals (i.e., on opposite sides of the diameter of the connecting member 43).

[0132] like Figure 8 and Figure 9 As shown, at least one of the first flange and the second flange may have an inclined surface relative to the plane of the connecting member 43, which is configured to facilitate insertion into the hole in the sliding layer 4 by deforming the corresponding flange (or hole) upon insertion. As shown, the flange on the anchor point side of the gap may be inclined, making it easier for the connector to be inserted into the hole from the inside of the sliding layer 4 toward the outer member 3.

[0133] The helmet 1 can be connected by placing the sliding layer 4 near the outer part 3 and then inserting the connector 40 into the hole in the sliding layer to connect the connector to the sliding layer 4 and the outer part 3.

[0134] like Figure 10As shown, the connecting member 43 can be generally annular (i.e., surrounding the hole). As shown, the shape of the connecting member 43 can be generally circular. However, it should be understood that other shapes can also be requested.

[0135] like Figures 8 to 10 As shown, the anchor point 42, elastic portion 41, and connecting member 43 of connector 40 can be integrally formed from the same material. The elastic portion 43 can be configured to deform substantially by bending of the material. The material can be a relatively rigid, elastic material. For example, connector 4 can be formed from a plastic material (e.g., polycarbonate). The connector is formed from the same material as the sliding layer 4.

[0136] Connector 40 can be formed by molding (e.g., injection molding). Figure 11 It shows Figures 8 to 10 The illustrated example connector variant includes a molding feature 46 configured to facilitate removal of the connector 40 from the mold. The mold may be formed in two parts on either side of a first axis. In the region where the two parts of the mold meet, the helical shape of the resilient portion 41 may include a draft angle 46 to facilitate removal. A third part of the mold may be located near the proximal end of the connector.

[0137] The outer component 3 may be an energy-absorbing layer. The energy-absorbing layer 3 may be molded from, for example, a polymer foam material (e.g., EPS) to have a specific predetermined shape. Surface features may be formed in the energy-absorbing layer 3 during the molding process or formed separately in the energy-absorbing layer 3.

[0138] Furthermore, the sliding layer 4 may be the outer layer of the interface layer and is formed of a rigid material. Optionally, the interface layer may include an inner layer comprising an inner comfort pad located on the radially inward surface of the outer layer. The outer layer may be molded to have a specific predetermined shape. The outer layer may be formed of low-friction materials as described above. The outer layer of the interface layer may be molded to have a predetermined shape substantially corresponding to the shape of the inner surface of the energy-absorbing layer 3. The molding process of the interface layer may include vacuum molding of the sheet forming the outer layer of the interface layer.

[0139] The sliding layer 4 can be formed separately, and the helmet can be assembled from the sliding layer 4, the connector 40 and the outer part 3 by arranging the interface layer 4 inside the outer part 3 and connecting the connector to the sliding layer 4 and the outer part 3 of the helmet 1.

[0140] The helmets described above can be used in a variety of activities. These activities include combat and industrial uses, such as protective helmets for soldiers and safety helmets or caps used by construction workers, miners, or industrial machinery operators. Helmets are also common in sports activities. For example, protective helmets can be used in ice hockey, cycling, motorsports, motor racing, skiing, snowboarding, skating, skateboarding, equestrian activities, American football, baseball, rugby, football, cricket, lacrosse, rock climbing, golf, air rifles, roller hockey, and paintball.

[0141] Examples of injuries that the helmets described above can prevent or mitigate include mild traumatic brain injuries (MTBI) such as concussion, and severe traumatic brain injuries (STBI) such as subdural hematomas (SDH), ruptured blood vessels, and diffuse axonal injuries (DAI), which can be summarized as excessive stretching of nerve fibers due to high shear deformation in brain tissue.

[0142] Depending on the characteristics of the rotational component of the impact (such as duration, amplitude, and rate of increase), one may suffer a concussion, SDH, DAI, or a combination of these injuries. Generally, SDH occurs under short-duration, high-amplitude acceleration conditions, while DAI occurs under longer, more widespread acceleration loads.

[0143] Based on the above teachings, variations of the above examples are possible. It should be understood that this disclosure may be implemented in other ways and is specifically described herein without departing from the spirit and scope of this disclosure.

Claims

1. A connector for a helmet, the connector connecting an internal component and an external component of the helmet, characterized in that, The connector includes: An anchor point, configured to connect to the outer component of the helmet, is located at the distal end of the connector; The spiral elastic portion, the first end of which is connected to the anchor point, extends spirally from the anchor point at least partially around a first axis extending from the anchor point in a first direction; A connecting member is attached to a second end of the resilient portion opposite to the first end, the radially outer contour of the connecting member at least partially surrounding the first axis, the connecting member being disposed at the proximal end of the connector and configured to connect to the inner part of the helmet; The elastic portion is configured to deform to allow the anchor point to move relative to the connecting member in a direction perpendicular to the first direction, thereby allowing relative sliding between the inner and outer parts of the helmet; and The anchor point, the elastic portion, and the connecting component are integrally formed from the same material.

2. The connector according to claim 1, characterized in that, The connector is made of plastic material.

3. The connector according to claim 2, characterized in that, The connector is made of polycarbonate.

4. The connector according to claim 1, characterized in that, The anchor point includes the first part of a two-part snap-fit ​​connector.

5. The connector according to claim 4, characterized in that, The anchor point includes a snap pin extending in the first direction, the snap pin being configured to be received by a corresponding snap basket in the outer part of the helmet.

6. The connector according to claim 1, characterized in that, The connecting component has an axial outer surface, which is arranged in a plane perpendicular to the first axis facing the first direction.

7. The connector according to claim 6, characterized in that, The connecting component includes opposing and paired first and second flanges spaced apart by a gap, the first and second flanges being configured to engage with corresponding holes in the inner part of the helmet, such that the inner part of the helmet is held within the gap for connection with the connecting component.

8. The connector according to claim 7, characterized in that, The connecting component includes a plurality of opposing and paired first flanges and second flanges arranged around the first axis at the radial outer edge of the connecting component.

9. The connector according to claim 7, characterized in that, At least one of the first flange and the second flange has an inclined surface relative to the plane of the connector, the inclined surface being configured to facilitate insertion into a hole in the inner part of the helmet by deforming the respective flange when inserted into the inner part of the helmet.

10. The connector according to claim 1, characterized in that, The connecting component is ring-shaped.

11. The connector according to claim 10, characterized in that, The connecting component is circular in shape.

12. The connector according to claim 1, characterized in that, The elastic portion is configured to deform by bending of the material forming the elastic portion.

13. A helmet, characterized in that, include: An outer component having an inner surface arranged radially inward and facing the wearer's head during use; and An inner component, as an interface layer, is disposed radially inside the outer component. The interface layer is configured to provide an interface between the helmet and the wearer. The interface layer is arranged adjacent to the inner surface of the outer component and is configured to slide relative to the inner surface of the outer component in response to a tilting impact on the helmet. The interface layer includes at least a sliding layer arranged adjacent to and facing the inner surface of the outer component. as well as The connector for connecting the outer component and the inner component according to any one of claims 1 to 12.

14. The helmet according to claim 13, characterized in that, The outer part of the helmet includes a recess for receiving the resilient portion of the connector.

15. The helmet according to claim 14, characterized in that, The elastic portion protrudes from the plane defined by the sliding layer into the recess, and the recess is arranged to surround the elastic portion.

16. The helmet according to claim 15, characterized in that, The recess is arranged to allow the elastic portion to deform, enabling the interface layer to slide relative to the outer component.

17. The helmet according to claim 16, characterized in that, The recess is configured to allow the elastic portion to deform, enabling the interface layer to slide relative to the outer component, while the elastic portion remains protruding beyond the plane defined by the remainder of the sliding layer.

18. The helmet according to claim 13, characterized in that, The outer component of the helmet includes a buckle basket configured to connect to a buckle pin forming the anchor point.

19. The helmet according to claim 13, characterized in that, The elastic portion is disposed at the center of the interface layer to correspond to the top of the wearer's head during use.

20. The helmet according to claim 13, characterized in that, The connector is formed of the same material as the sliding layer.

21. The helmet according to claim 13, characterized in that, The elastic portion is configured to deform, allowing the interface layer to slide relative to the outer component in any direction within the plane of the sliding layer.

22. The helmet according to claim 13, characterized in that, The elastic portion is configured to deform, such that the interface layer can slide relative to the outer component, and the interface layer can be displaced in the plane of the sliding layer by at least 10 mm or at least 15 mm.

23. The helmet according to claim 13, characterized in that, The sliding layer is a rigid layer.

24. The helmet according to claim 13, characterized in that, The sliding layer is formed of a polymer, which is one of polypropylene, polycarbonate, polytetrafluoroethylene, acrylonitrile-butadiene-styrene, polyvinyl chloride, nylon, perfluoroalkoxyalkane, fluorinated ethylene-propylene, polyethylene, polyketone, ultra-high molecular weight polyethylene, and Teflon™.

25. The helmet according to claim 13, characterized in that, The sliding layer is molded to have a predetermined shape corresponding to the shape of the inner surface of the outer component.

26. The helmet according to claim 13, characterized in that, The interface layer includes a comfort pad facing the wearer during use.

27. The helmet according to claim 13, characterized in that, The external component includes an energy-absorbing layer.

28. The helmet according to claim 27, characterized in that, The energy absorption layer is formed of polymer foam material.

29. The helmet according to claim 13, characterized in that, The outer component includes a hard outer layer.

30. A component kit for forming a helmet according to any one of claims 13 to 29, characterized in that, include: An interface layer for the helmet is configured to be disposed radially inside an outer component during the formation of the helmet and to provide an interface between the helmet and the wearer, wherein the interface layer is configured to be disposed at a location adjacent to an inner surface of the outer component and to slide relative to the inner surface of the outer component in response to a tilting impact on the helmet during the formation and use of the helmet, the interface layer comprising at least a sliding layer disposed at a location adjacent to and facing the inner surface of the outer component; as well as The connector according to any one of claims 1 to 12.

31. The component kit according to claim 30, characterized in that, Also includes: The outer component for the helmet has an inner surface arranged radially inward and facing the wearer's head during the formation and use of the helmet.

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