connector

Abstract

A connector (20) for connecting inner and outer layers of a device is provided, the connector comprising: a first attachment member (21) for attachment to one of the inner or outer layers; and a second attachment member (22) for attachment to the other of the inner or outer layers; wherein the first and second attachment members are connected in such a way that the first and second attachment members are allowed to move relative to each other when the inner and outer layers move relative to each other, and the first attachment member comprises: a first flange (211) adjacent to a gap (214) for receiving a portion of the inner or outer layer, the flange holding the inner or outer layer within the gap, and wherein the first flange is generally dome-shaped.

Description

Technical Field

[0001] This invention relates to a connector between internal and external components of a device. In particular, this invention relates to a device that may include a sliding interface between two components, such as a helmet. Background Technology

[0002] Helmets are widely used in a variety of activities. These activities include combat and industrial purposes, 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. For example, protective helmets are used in ice hockey, cycling, motorsports, motor racing, skiing, snowboarding, skating, skateboarding, equestrian activities, American football, baseball, rugby, football, cricket, lacrosse, mountaineering, golf, air rifle shooting, roller derby, and paintball.

[0003] Helmets can be fixed-size or adjustable to accommodate heads of different sizes and shapes. In some types of helmets, such as those commonly found in hockey helmets, adjustability is provided by changing the external and internal dimensions of the helmet by moving its components. This can be achieved with helmets having two or more parts that can move relative to each other. In other cases, such as helmets commonly found in cycling sports, the helmet is equipped with attachments for securing it to the user's head, and these attachments can be sized to fit the user's head while the main body or shell of the helmet remains the same size. In some cases, comfort padding inside the helmet can serve as an attachment. This attachment can also be provided as multiple physically separate components, such as multiple comfort pads that are not connected to each other. Such attachments for securing the helmet to the user's head can be used in conjunction with additional straps (such as a chin strap) to further secure the helmet in place. Combinations of these adjustment mechanisms are also possible.

[0004] Helmets typically consist of a rigid outer shell made of plastic or composite materials and an energy-absorbing layer often called a liner. In other configurations, such as rugby face-off helmets, the helmet may not have a rigid outer shell, and the helmet as a whole may be flexible. Nowadays, in any case, the design of protective helmets must meet certain legal requirements, particularly concerning the maximum acceleration that may occur at the center of gravity of the brain under a specified load. Typically, tests are conducted whereby a model skull equipped with a helmet is subjected to radial impacts toward the head. This results in modern helmets having good energy absorption capabilities in the event of radial impacts to the skull. Advances have also been made in helmet development (e.g., WO2001 / 045526 and WO2011 / 139224, the entire contents of which are incorporated herein by reference) to reduce the energy transferred from oblique impacts (i.e., those combining tangential and radial components) by absorbing or dissipating rotational energy and / or redirecting it to translational rather than rotational energy.

[0005] This oblique impact (without protection) causes translational and angular acceleration in the brain. Angular acceleration causes the brain to rotate within the skull, thus damaging the body parts connecting the brain and skull, as well as the brain itself.

[0006] Examples of rotational injuries include mild traumatic brain injury (MTBI), such as concussion, and severe traumatic brain injury (STBI), such as subdural hematoma (SDH), hemorrhage due to ruptured blood vessels, and diffuse axonal injury (DAI), which can be summarized as excessive stretching of nerve fibers due to high shear deformation in brain tissue.

[0007] Depending on the characteristics of the rotational force, 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, while DAI occurs under longer-duration, more general acceleration loads.

[0008] In helmets disclosed in WO2001 / 045526 and WO2011 / 139224, which can reduce the rotational energy transmitted to the brain caused by oblique impact, two parts of the helmet can be configured to slide relative to each other after an oblique impact. Connectors can be provided that allow the parts to move relative to each other during the impact while connecting them together.

[0009] To provide such a helmet, it is desirable to provide two components that can slide relative to each other, thus providing a sliding interface. It is also desirable to provide such a sliding interface without significantly increasing manufacturing costs and / or workload. Summary of the Invention

[0010] According to a first aspect of the invention, a connector for connecting an inner layer and an outer layer of a connecting device is provided, the connector comprising: a first attachment member for attachment to one of the inner layer or the outer layer; and a second attachment member for attachment to the other of the inner layer or the outer layer; wherein the first and second attachment members are connected in such a way that the first attachment member and the second attachment member are allowed to move relative to each other when the inner layer and the outer layer move relative to each other, and the first attachment member comprising: a first flange portion adjacent to a gap for receiving a portion of the inner layer or the outer layer, the flange portion holding the inner layer or the outer layer within the gap, and wherein the first flange portion is generally dome-shaped.

[0011] According to a second aspect of the invention, a connector for connecting inner and outer layers of a connecting device is provided, the connector comprising: a first attachment member for attachment to one of the inner or outer layers; and a second attachment member for attachment to the other of the inner or outer layers; wherein the first and second attachment members are connected in such a way that the first and second attachment members are allowed to move relative to each other when the inner and outer layers move relative to each other, and the first attachment member includes: a first flange portion adjacent to a gap for receiving a portion of said one of the inner or outer layers, the first flange portion retaining said inner or outer layer within the gap. The first and second sections are separate, the first section being configured to be directly connected to one of the inner or outer layers, and the second section being configured to connect the remainder of the connector to the first section, wherein: the first section of the first attachment member includes: a first flange portion located in the peripheral portion of the first section; a recess portion located in the central region of the first section within the peripheral portion; and a through-hole passing through the recess portion; and the second section of the first attachment member includes: an additional flange portion configured to be located within the recess portion of the first section, and a neck portion configured to pass through the through-hole of the first section, the neck portion being connected to the remainder of the connector.

[0012] Optionally, when the flange portion of the second section is located within the first flange portion of the first section, the first flange portion of the first section and the flange portion of the second section together form a substantially flat continuous surface.

[0013] According to a third aspect of the invention, a connector for connecting an inner layer and an outer layer of a connecting device is provided, the connector comprising: a first attachment member for attachment to one of the inner layer or the outer layer; and a second attachment member for attachment to the other of the inner layer or the outer layer; wherein the first and second attachment members are connected in such a way that the first attachment member and the second attachment member are allowed to move relative to each other when the inner layer and the outer layer move relative to each other, and the second attachment member comprises: a first portion having a through hole therein; and a second portion passing through the through hole and configured to be attached to the other of the inner layer or the outer layer; wherein the first portion of the second attachment member is configured such that the first portion can pass through the hole in one of the inner layer or the outer layer, and the first attachment member is configured such that the first attachment member cannot pass through the hole.

[0014] Optionally, the second portion may be removed from the through-hole in the first portion of the second attachment member, and is configured such that when the second portion is located within the through-hole in the first portion of the second attachment member, the second portion cannot pass through the hole.

[0015] Optionally, the second part is a fastening device and includes a snap pin.

[0016] Optionally, the first part includes its prominent, elongated tail.

[0017] According to a fourth aspect of the invention, a connector for connecting inner and outer layers of a connecting device is provided, the connector comprising: a first attachment member for attachment to one of the inner or outer layers; a second attachment member for attachment to the other of the inner or outer layers; and a resilient member connecting the first and second attachment members; wherein: the resilient member is configured to be disposed between the inner and outer layers, and when the connector is attached to the inner and outer layers, the resilient member extends in a direction substantially parallel to the planes of the inner and outer layers; and when the connector is attached to the inner and outer layers, the resilient member, in a neutral state, is biased in a direction perpendicular to the planes of the inner and outer layers such that when the first attachment member is attached to said one of the inner or outer layers, the second attachment member presses against said one of the inner or outer layers.

[0018] Optionally, the first attachment member includes: a first flange portion adjacent to the gap, the gap being for receiving a portion of one of the inner or outer layers, the first flange portion holding the inner or outer layer within the gap, and wherein the first flange portion is generally dome-shaped.

[0019] Optionally, the first attachment member includes: a separate first segment and a second segment, the first segment being configured to directly connect to one of the inner or outer layers, and the second segment being configured to connect the remainder of the connector to the first segment, wherein: the first segment of the first attachment member includes: a first flange portion located in the peripheral portion of the first segment, separated by a gap for receiving a portion of one of the inner or outer layers, the flange portion retaining the inner or outer layer within the gap; a recess portion located in the central region of the first segment within the peripheral portion; and a through-hole extending through the recess portion; the second segment of the first attachment member includes: a flange portion configured to be located within the recess portion of the first segment, and a neck portion configured to extend through the through-hole of the first segment, the neck portion connecting to the remainder of the connector.

[0020] Optionally, the second attachment member includes: a first portion having a through hole therein; a second portion passing through the through hole and configured to be attached to the other of the inner or outer layer; wherein; an elongated portion of the second attachment member is configured such that the elongated portion can pass through the hole in one of the inner or outer layer, and the first attachment member is configured such that the first attachment member cannot pass through the hole.

[0021] According to a fifth aspect of the invention, an apparatus is provided comprising: an inner layer and an outer layer configured to move relative to each other; and at least one connector according to any one of the preceding aspects, which connects the inner layer and the outer layer.

[0022] Optionally, the inner and outer layers are configured to move relative to each other at the sliding interface.

[0023] Alternatively, the device is a protective headgear.

[0024] Optionally, the first attachment component is attached to the inner layer.

[0025] Optionally, the inner layer is an interface layer configured to contact the wearer's head.

[0026] According to a sixth aspect of the invention, a method of assembling an apparatus according to a fifth aspect of the invention is provided, the method comprising: passing a second attachment member through a hole in one of the inner or outer layers until a first attachment member is adjacent to the hole; attaching the first attachment member to one of the inner or outer layers at the hole via a first flange; and attaching the second attachment member to the other of the inner or outer layers. Attached Figure Description

[0027] The present invention will now be described in detail with reference to the accompanying drawings, wherein:

[0028] Figure 1 A cross-section of a helmet designed to provide protection against oblique impacts is depicted.

[0029] Figure 2 To show Figure 1 A diagram illustrating the working principle of a helmet;

[0030] Figure 3A , 3B And 3C shows Figure 1 Changes in helmet structure;

[0031] Figure 4 and 5 An alternative arrangement of the helmet is illustrated schematically;

[0032] Figures 6 to 9 The further arrangement of the helmet is schematically depicted;

[0033] Figure 10 An alternative arrangement of the helmet is illustrated schematically;

[0034] Figure 11 An alternative arrangement of the helmet is illustrated schematically;

[0035] Figure 12 An alternative arrangement of the helmet is illustrated schematically;

[0036] Figure 13 A first view of a first exemplary connector is shown;

[0037] Figure 14 A second view showing a first exemplary connector connected to the device;

[0038] Figure 15 A third view showing the first exemplary connector passing through a hole in a portion of the device;

[0039] Figure 16 A first view of the second exemplary connector is shown;

[0040] Figure 17 The first part of the second exemplary connector is shown;

[0041] Figure 18 The second part of the second exemplary connector is shown;

[0042] Figure 19 A second view showing a second exemplary connector connected to the device;

[0043] Figure 20 A third view shows a second exemplary connector connected to the device. Detailed Implementation

[0044] For clarity, the thickness proportions of the layers in the helmet depicted in the figure are exaggerated in the accompanying drawings, and they can of course be adjusted as needed and required.

[0045] Figure 1 The first helmet 1 of the type discussed in WO01 / 45526 is depicted, designed to provide protection against oblique impacts. This type of helmet can be any type of helmet discussed above.

[0046] The protective helmet 1 is constructed with an outer shell 2 and an inner shell 3 arranged inside the outer shell 2 for contact with the wearer's head.

[0047] A sliding layer 4 (also called a sliding facilitator or low-friction layer) is provided between the outer shell 2 and the inner shell 3, which allows for displacement between the outer shell 2 and the inner shell 3. Specifically, as described below, the sliding layer 4 or sliding facilitator can be configured to allow sliding between the two components during an impact. For example, it can be configured to slide under the force associated with an impact on the helmet 1, which is expected to be non-fatal to the wearer of the helmet 1. In some arrangements, the sliding layer 4 may need to be configured such that the coefficient of friction is 0.001 to 0.3 and / or less than 0.15.

[0048] like Figure 1 As shown, one or more connecting members 5 can be provided at the edge of the helmet 1 to connect the outer shell 2 and the inner shell 3 to each other. In some arrangements, the connector can absorb energy to offset the mutual displacement between the outer shell 2 and the inner shell 3. However, this is not necessary. Furthermore, even if this feature is present, the amount of energy absorbed is usually minimal compared to the energy absorbed by the inner shell 3 during impact. In other arrangements, the connecting member 5 may not be present at all.

[0049] Furthermore, the positions of these connecting members 5 can be varied (for example, set away from the edge portion, connecting the outer shell 2 and the inner shell 3 via the sliding layer 4).

[0050] The outer shell 2 is preferably relatively thin and robust to withstand various types of impacts. For example, the outer shell 2 can be made of 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, or Kevlar.

[0051] The inner shell 3 is quite thick and serves as an energy-absorbing layer. Therefore, it can cushion or absorb impacts to the head. It can advantageously be made of foam materials, such as expanded polystyrene (EPS), expanded polypropylene (EPP), expanded polyurethane (EPU), vinyl nitrile foam; or, for example, other materials forming a honeycomb structure; or, as in Poron... TM and D3O TM The brand name sells strain rate sensitive foam. The construction can vary in different ways, for example, appearing as multiple layers of different materials as described below.

[0052] The inner shell 3 is designed to absorb impact energy. Other components of the helmet 1 will absorb this energy to a limited extent (e.g., the so-called "comfort padding" provided within the rigid outer shell 2 or the inner shell 3), but this is not their primary purpose, and their contribution to energy absorption is negligible compared to the energy absorption of the inner shell 3. In fact, while some other components, such as the comfort padding, may be made of "compressible" materials and are considered "energy-absorbing" in other cases, it is well known in the helmet industry that compressible materials are not necessarily "energy-absorbing" in the sense of absorbing a large amount of energy during an impact for the purpose of reducing injury to the helmet wearer.

[0053] Many different materials and embodiments can be used as the sliding layer 4 or sliding promoter, such as oil, Teflon, microspheres, air, rubber, polycarbonate (PC), and fabric materials such as felt. This layer can have a thickness of about 0.1-5 mm, but other thicknesses can also be used, depending on the material chosen and the desired performance. The number and location of the sliding layers can also vary; one such example is discussed below (refer to Figure 3b).

[0054] As a connecting member 5, for example, a deformable plastic or metal strip that is anchored in the outer and inner shells in a suitable manner can be used.

[0055] Figure 2 The working principle of the protective helmet 1 is illustrated, wherein the helmet 1 and the wearer's skull 10 are assumed to be semi-cylindrical, with the skull 10 mounted on a longitudinal axis 11. When the helmet 1 is subjected to an oblique impact K, torsional force and torque are transmitted to the skull 10. The impact force K generates a tangential force K on the protective helmet 1. T and radial force K R In this special case, only the tangential force K of the helmet's rotation... T Its impact is noteworthy.

[0056] As can be seen, the force K causes a displacement 12 of the outer shell 2 relative to the inner shell 3, resulting in deformation of the connecting member 5. This arrangement allows for a significant reduction in the torsional force transmitted to the skull 10. A typical reduction is approximately 25%, but in some cases, reductions of up to 90% are possible. This is a result of the sliding motion between the inner shell 3 and the outer shell 2 reducing the amount of energy transmitted to the radial acceleration.

[0057] Sliding motion can also occur in the circumferential direction of the protective helmet 1, although this is not depicted. This could be the result of circumferential rotation between the outer shell 2 and the inner shell 3 (i.e., during impact, the outer shell 2 can rotate relative to the inner shell 3 at a circumferential angle).

[0058] Other arrangements of the protective helmet 1 are also possible. Some possible variations are shown in Figure 3. In Figure 3a, the inner shell 3 consists of a relatively thin outer layer 3” and a relatively thick inner layer 3'. The outer layer 3” is preferably harder than the inner layer 3' to facilitate sliding relative to the outer shell 2. In Figure 3b, the inner shell 3 is constructed in the same manner as in Figure 3a. However, in this case, there are two sliding layers 4 with an intermediate shell 6 between them. If desired, the two sliding layers 4 can behave differently and be made of different materials. For example, one possibility is that the friction of the outer sliding layer is lower than that of the inner sliding layer. In Figure 3c, the outer shell 2 behaves differently than before. In this case, the harder outer layer 2” covers the softer inner layer 2'. For example, the inner layer 2' can be made of the same material as the inner shell 3.

[0059] Figure 4 The second helmet 1, of the type discussed in WO2011 / 139224, is depicted, which is also used to provide protection against oblique impacts. This type of helmet can also be any type of helmet discussed above.

[0060] exist Figure 4 In the helmet 1, energy absorption layer 3 is included, which is similar to... Figure 1 The inner shell 3 of the helmet. The outer surface of the energy-absorbing layer 3 may be made of the same material as the energy-absorbing layer 3 (i.e., there may be no additional outer shell), or the outer surface may be equivalent to... Figure 1 The rigid shell 2 of the helmet shown is the outer shell 2 (see...) Figure 5 In that case, the rigid shell 2 can be made of a different material than the energy-absorbing layer 3. Figure 4 The helmet 1 has multiple vents 7 (which are optional) that extend through the energy-absorbing layer 3 and the shell 2, thereby allowing airflow through the helmet 1.

[0061] An interface layer 13 (also referred to as an attachment device) is provided for connection to the wearer's head (and / or attachment of the helmet 1 to the wearer's head). As previously mentioned, this may be desirable when the dimensions of the energy-absorbing layer 3 and the rigid shell 2 cannot be adjusted, as it allows for the accommodation of different head sizes by adjusting the dimensions of the attachment device 13. The attachment device 13 may be made of a resilient or semi-resilient polymer material (such as PC, ABS, PVC, or PTFE) or a natural fiber material (such as cotton). For example, a fabric cap or mesh may be formed into the attachment device 13.

[0062] Although attachment 13 is shown as a headband portion having additional strips extending from the front, back, left, and right sides, the specific construction of attachment 13 can vary depending on the helmet's construction. In some cases, the attachment may resemble a continuous (formed) sheet, possibly with holes or gaps, such as those corresponding to vents 7, to allow airflow through the helmet.

[0063] Figure 4 An optional adjustment device 6 is also depicted for adjusting the diameter of the headband of the attachment device 13 for a particular wearer. In other arrangements, the headband may be an elastic headband, in which case the adjustment device 6 can be omitted.

[0064] A sliding actuator 4 is provided on the radially inner side of the energy-absorbing layer 3. The sliding actuator 4 is adapted to slide against the energy-absorbing layer or against the attachment device 13, which is configured to attach the helmet to the wearer's head.

[0065] The sliding facilitator 4 is configured to assist the energy absorption layer 3 in sliding relative to the attachment device 13 in the same manner as described above. The sliding facilitator 4 can be made of a material with a low coefficient of friction, or it can be coated with such a material.

[0066] Therefore, in Figure 4 In the helmet, the sliding facilitator 8 can be disposed on the innermost side of the energy absorption layer 3 or integrated with the innermost side of the energy absorption layer 3, facing the attachment device 13.

[0067] However, for the same purpose of providing slidability between the energy-absorbing layer 3 and the attachment device 13, it is also conceivable that the sliding facilitator 4 can be disposed on or integrated with the outer surface of the attachment device 13. That is, in a particular arrangement, the attachment device 13 itself can be adapted to serve as the sliding facilitator 4 and can include a low-friction material.

[0068] In other words, the sliding facilitator 4 is disposed radially inside the energy absorption layer 3. The sliding facilitator can also be disposed radially outside the attachment device 13.

[0069] When the attachment device 13 is formed as a cap or mesh (as described above), the sliding facilitator 4 can be configured as a patch of low-friction material.

[0070] Low-friction materials can be waxy polymers such as PTFE, ABS, PVC, PC, nylon, PFA, EEPROM, PE, and UHMWPE, or powdered materials into which lubricants can be injected. Low-friction materials can also be fabric materials. As discussed, such low-friction materials can be applied to either or both of the sliding facilitator and the energy-absorbing layer.

[0071] The attachment device 13 can be fixed to the energy absorption layer 3 and / or the outer shell 2 by means of the fixing member 5, such as Figure 4 The four fixed components 5a, 5b, 5c, and 5d are used. These can be adapted to absorb energy by deforming in an elastic, semi-elastic, or plastic manner. However, this is not necessary. Furthermore, even when this feature is present, the amount of energy absorbed is typically minimal compared to the energy absorbed by the energy-absorbing layer 3 during impact.

[0072] according to Figure 4 The arrangement shown has four fixed members 5a, 5b, 5c and 5d as suspension members 5a, 5b, 5c and 5d, each having a first part 8 and a second part 9. The first part 8 of the suspension members 5a, 5b, 5c and 5d is adapted to be fixed to the attachment device 13, and the second part 9 of the suspension members 5a, 5b, 5c and 5d is adapted to be fixed to the energy absorption layer 3.

[0073] Figure 5 Showing something similar Figure 4 The arrangement of the helmet when it is worn on the wearer's head. Figure 5 The helmet 1 includes a hard outer shell 2 made of a different material than the energy-absorbing layer 3. Figure 4 The difference lies in Figure 5 In the middle, the attachment device 13 is fixed to the energy absorption layer 3 by two fixing members 5a and 5b, which are adapted to absorb energy and force elastically, semi-elastically or plastically.

[0074] Figure 5A frontal oblique impact I is shown, generating a rotational force on the helmet. This oblique impact I causes the energy-absorbing layer 3 to slide relative to the attachment device 13. The attachment device 13 is secured to the energy-absorbing layer 3 by fastening members 5a and 5b. For clarity, although only two such fastening members are shown, many such fastening members can actually be present. The fastening members 5 can absorb the rotational force through elastic or semi-elastic deformation. In other arrangements, the deformation may be plastic, even causing one or more fastening members 5 to break. In the case of plastic deformation, at least that fastening member 5 needs to be replaced after the impact. In some cases, a combination of plastic and elastic deformation may occur in the fastening members 5, i.e., some fastening members 5 break, plastically absorbing energy, while other fastening members elastically deform and absorb the force.

[0075] Usually, in Figure 4 and Figure 5 In the helmet, during the impact, the energy absorption layer 3... Figure 1 The inner shell of the helmet acts as an impact absorber through compression in the same way. If the outer shell 2 is used, it will help disperse impact energy on the energy-absorbing layer 3. The sliding facilitator 4 will also allow sliding between the attachment and the energy-absorbing layer. This allows energy to be dissipated in a controlled manner, which would otherwise be transferred to the brain as rotational energy. Energy can be dissipated through frictional heat, deformation of the energy-absorbing layer, or deformation or displacement of the fixing components. Reduced energy transfer results in reduced rotational acceleration affecting the brain, thereby reducing brain rotation within the skull. This reduces the risk of rotational injuries, including MTBI and STBI, such as subdural hematoma, SDH, ruptured blood vessels, concussion, and DAI.

[0076] Connectors that can be used inside helmets are described below. It should be understood that these connectors can be used in a variety of environments and are not limited to use inside helmets. For example, they can be used in other devices that provide impact protection, such as padding in body armor or sports equipment. In the case of helmets, connectors can be used in particular to replace previously known connecting members and / or fixing members of the arrangements discussed above.

[0077] In one arrangement, the connector can be with Figure 6 Use with helmet 1 of the type shown. Figure 6 The helmet shown has the same features as described above. Figure 4 and Figure 5 Similar configurations are discussed. Specifically, the helmet has a rigid outer shell 2 and an energy-absorbing layer 3. A head attachment is provided in the form of a helmet liner 15. The liner 15 may include comfort padding as discussed above. Typically, the liner 15 and / or any comfort padding may not absorb a large proportion of impact energy compared to the energy absorbed by the energy-absorbing layer 3.

[0078] The lining 15 may be removable. This allows the lining to be cleaned and / or allows for the provision of linings modified to fit a particular wearer.

[0079] An inner shell 14 is disposed between the inner liner 15 and the energy-absorbing layer 3. The inner shell 14 is formed of a relatively hard material, i.e., a material harder than the energy-absorbing layer 3. The inner shell 14 can be molded to the energy-absorbing layer 3 and can be made of any material discussed above relating to the formation of the outer shell 2. In an alternative arrangement, the inner shell 14 can be formed of a fabric material, optionally coated with a low-friction material.

[0080] exist Figure 6 In this arrangement, a low-friction interface is provided between the inner shell 14 and the inner liner 15. This can be achieved by appropriately selecting at least one material used to form the outer surface of the inner liner 15 or the material used to form the inner shell 14. Alternatively or additionally, a low-friction coating may be applied to at least one of the opposing surfaces of the inner shell 14 and the inner liner 15. Alternatively or additionally, a lubricant may be applied to at least one of the opposing surfaces of the inner shell 14 and the inner liner 15.

[0081] As shown in the figure, the liner 15 can be connected to the rest of the helmet 1 via one or more connectors 20, which will be discussed in further detail below. The choice of the location of the connectors 20 and the number of connectors 20 to be used can depend on the construction of the rest of the helmet.

[0082] In such Figure 6 In the arrangement shown, at least one connector 20 can be connected to the inner shell 14. Alternatively or additionally, one or more connectors 20 can be connected to another part of the remainder of the helmet 1, such as the energy-absorbing layer 3 and / or the outer shell 2. Connectors 20 can also be connected to two or more parts of the remainder of the helmet 1.

[0083] Figure 7 Another alternative arrangement of helmet 1 is depicted. As shown, this arrangement of helmet 1 includes multiple independent segments of comfort padding 16. Each segment of comfort padding 16 can be connected to the rest of the helmet via one or more connectors 20.

[0084] Each section of the comfort pad 16 may have a sliding interface disposed between the section of the comfort pad 16 and the remainder of the helmet 1. In this arrangement, each section of the comfort pad 16 can provide a sliding interface with... Figure 6 The liner 15 arranged as shown functions similarly. The option of providing a sliding interface between the liner and the helmet, discussed above, also applies to the sliding interface between the comfort pad section and the helmet.

[0085] It should also be understood that Figure 7The arrangement (i.e., multiple independently mounted comfort padding sections 16, with sliding interfaces between each section of the comfort padding 16 and the rest of the helmet) can be combined with any type of helmet, including, Figures 1 to 5 The helmet shown also has a sliding interface located between the other two parts of the helmet.

[0086] Figure 8 and 9 It shows the relationship with Figure 6 and 7 The equivalent arrangement, except that the inner shell 14 is applied to the inner liner 15 (in Figure 8 (in) or comfort pad 16 (in) Figure 9 (Besides China). Figure 9 In the case of, with Figures 6 to 8 Compared to the basic full-shell arrangement, the inner shell 14 can be only a portion of the shell or multiple sections of the shell. In fact, in Figure 8 and Figure 9 In this context, the inner shell 14 can also be characterized as a relatively hard coating on the lining 15 or comfort padding 16. For example... Figure 6 and Figure 7 As shown, the inner shell 14 is formed of a relatively rigid material, i.e., a material harder than the energy-absorbing layer 3. For example, this material can be PTFE, ABS, PVC, PC, nylon, PFA, EEP, PE, and UHMWPE. This material can be bonded to the outside of the liner 15 or comfort padding 16 to simplify the manufacturing process. This bonding can be done in any manner, for example, by adhesives or by high-frequency welding or stitching. In an alternative arrangement, the inner shell 14 can be formed of a fabric material, optionally coated with a low-friction material.

[0087] exist Figure 8 and Figure 9 In this embodiment, a low-friction interface is provided between the inner shell 14 and the energy-absorbing layer 3. This can be achieved by appropriately selecting at least one material used to form the outer surface of the energy-absorbing layer 3 or the material used to form the inner shell 14. Alternatively or additionally, a low-friction coating can be applied to at least one of the opposing surfaces of the inner shell 14 and the energy-absorbing layer 3. Alternatively or additionally, a lubricant can be applied to at least one of the opposing surfaces of the inner shell 14 and the energy-absorbing layer 3.

[0088] exist Figure 8 and Figure 9 In this configuration, at least one connector 20 may be connected to the inner shell 14. Alternatively or additionally, one or more connectors 20 may be connected to another portion of the remaining portion of the inner lining 15 or comfort padding 16.

[0089] In another arrangement, the connector can be with Figure 10 Use with helmet 1 of the type shown. Figure 10The helmet shown has the same features as mentioned above. Figure 1 , 2 Similar constructions to those discussed in 3A and 3B. Specifically, the helmet has a relatively rigid outer shell 2 and an energy-absorbing layer 3, which are configured to slide relative to each other. At least one connector 20 can be attached to the outer shell 2 and the energy-absorbing layer 3. Alternatively, the connector can attach one or more intermediate sliding layers associated with one or both of the outer shell 2 and the energy-absorbing layer 2, providing low friction.

[0090] In another arrangement, the connector can be... Figure 11 Use with helmet 1 of the type shown. Figure 11 The helmet shown has the same features as described above. Figure 3B A similar construction to that discussed. Specifically, the helmet has a relatively rigid outer shell 2 and an energy-absorbing layer 3, which is divided into outer and inner components 3A and 3B, configured to slide relative to each other. At least one connector 20 can be attached to the outer and inner components 3A and 3B of the energy-absorbing layer 3. Alternatively, the connector can connect one or more intermediate sliding layers associated with one or both of the outer and inner components 3A and 3B of the energy-absorbing layer 3, providing low friction.

[0091] Figure 12 Another alternative arrangement of helmet 1 is depicted. In this arrangement, one or more outer plates 17 can be mounted to helmet 1, which has at least one energy-absorbing layer 3 and a relatively hard layer 2 formed outside the energy-absorbing layer 2. It should be understood that this arrangement of outer plates 17 can be added to any helmet according to any arrangement discussed above, i.e., having a sliding interface between at least two layers of helmet 1.

[0092] The outer panel 17 can be mounted to the outer surface of the relatively hard layer 2 in such a way that, at least under impact with the outer panel 17, a low-friction interface is provided between the relatively hard layer 2 and at least a portion of the surface of the outer panel 17, with at least a portion of the surface of the outer panel 17 contacting the outer surface of the relatively hard layer 2. In some arrangements, an intermediate low-friction layer may be provided between the hard layer 2 and the panel 17.

[0093] Furthermore, the outer plate 17 can be installed in such a way that, in the event of an impact, the outer plate 17 can slide on the relatively hard layer 2 (or the intermediate low-friction layer). Each outer plate 17 can be connected to the rest of the helmet 1 via one or more connectors 20.

[0094] In this arrangement, upon impact with helmet 1, impact can be expected to occur on one or a limited number of outer plates 17. Therefore, by configuring the helmet such that one or more outer plates 17 can move relative to the relatively rigid layer 2 and any unimpacted outer plates 17, the impact-receiving surfaces, i.e., one or a limited number of outer plates 17, can move relative to the rest of helmet 1. In the case of oblique or tangential impact, this may reduce the transmission of rotational forces to the rest of the helmet. Furthermore, this may reduce the rotational acceleration exerted on the helmet wearer's brain and / or reduce brain injury.

[0095] Figures 13 to 15 Different views of a first exemplary connector 20 according to this disclosure are shown. As explained above, connector 20 is used to connect devices, such as the inner and outer layers of a helmet.

[0096] Connector 20 includes a first attachment member 21 for attaching connector 20 to one of the inner or outer layers, and a second attachment member 22 for attaching connector 20 to the other of the inner or outer layers. The first attachment member 21 and the second attachment member 22 are connected in such a way that relative movement between the inner and outer layers is permitted. In this example, the first attachment member 21 and the second attachment member 22 are connected by a resilient member 23. The features of the first attachment member 21, the second attachment member 22, and the resilient member 23 will be described in more detail below.

[0097] Figure 13 and 14 The first attachment member 21 is shown in detail. As shown, the first attachment member 21 includes a first flange 211. The first flange 211 is attached to the elastic member 23 via a neck 212. Figure 14 As best shown, the neck 212 is bent at an angle of approximately 90 degrees, such that the central axis passing through the first flange 211 is substantially perpendicular to the central axis passing through the elastic portion 23.

[0098] The neck 212 means that although the attachment between the first attachment member 21 and the inner or outer layer of the device is performed in a direction generally perpendicular to the inner or outer layer of the device, the connector 20 itself extends generally parallel to the inner or outer layer of the device, such as Figure 14 As shown.

[0099] The first attachment member 21 also includes a second flange 213. As shown, these can be arranged on the neck 212. The first flange 211 and the second flange 213 can be arranged opposite each other and separated by a gap 214. Figure 14As shown, the gap 214 can be configured to accommodate a portion of either the inner or outer layer connected to the first attachment member 21, and to retain that member within the gap 214. In some examples, a portion of the elastic member 23 can be used as a second flange. Figure 14 The example shown is such an example, although an additional second flange 213 is also provided. Therefore, the first flange 211 and the second flange 213 can secure the first attachment member 21 in place relative to the inner or outer layer of the device.

[0100] like Figures 13 to 15 As shown, the first flange 211 can be generally dome-shaped. It should be noted that the dome shape can have a circular profile, as shown, but is not limited to this. For example, alternatively, the profile can be oval or elliptical. The term dome shape can refer to a substantially smooth, curved, convex shape. The lower surface of the peripheral portion of the dome can face the second flange 213 through the gap 14.

[0101] like Figure 14 As shown, when the first attachment member 21 is attached to one of the inner or outer layers of the helmet, such that the inner or outer layer is held within the gap between the flange portion 211 and the flange portion 213, the dome shape of the first flange portion 211 results in a relatively streamlined arrangement with a small profile. Preferably, the dome-shaped first flange portion 211 is substantially flat. For example, the dome-shaped first flange portion 211 may have a thickness between 0.5 and 2 mm, for example, about 1 mm. The smoothness of the dome shape, i.e., the absence of sharp corners, reduces point pressure felt if the first flange portion 211 comes into contact with the wearer of the device. Furthermore, the dome shape prevents the wearer's hair from being caught by the first attachment member 21.

[0102] The second attachment component 22 includes a first portion 221 having a through hole 222, such as Figure 15 As shown in the best example. Figure 13 and 14 As shown, the second portion 223 can be a fastening device that passes through the through-hole 222 and is configured to attach to either the inner or outer layer of the helmet. Preferably, the second portion 223 can be removed from the through-hole 222 to separate from the first portion 221. The first portion 221 may extend in substantially the same direction as the elastic member 23 connecting the first attachment member 21 and the second attachment member 22. The through-hole 222 may be arranged perpendicular to the extending direction of the first portion 221. The through-hole may also extend in a direction based on being parallel to the central axis passing through the first attachment member 21.

[0103] like Figure 14As shown, the fastening device 223 may include a latch 224 configured to engage with a cradle 31 in the inner or outer layer of the device. The latch 224 is connected to the cradle 31. As shown, the latch 224 may be connected to a flange 225 (e.g., a plate) larger than the through-hole 222 to retain the latch 224 within the through-hole 222. The second portion 223 may be formed of a relatively hard material compared to the first portion 221. The orientation of the through-hole 222 may mean that while the attachment between the second attachment member 21 and the inner or outer layer of the device is made in a direction substantially perpendicular to the inner or outer layer of the device, the connector 20 itself extends substantially parallel to the inner or outer layer of the device, such as... Figure 14 As shown.

[0104] like Figure 15 As shown, the first portion 221 of the second attachment member 22 is configured such that the first portion 221 can pass through a hole 41 in the inner or outer layer of the device, to which the first attachment member 21 will be connected.

[0105] like Figures 13 to 15 As shown, the first portion 221 may have one or more generally flat surfaces arranged such that the through-hole 222 is formed in said surfaces. Preferably, the thickness of the first portion 221 (in the direction of the through-hole 222) is relatively small compared to the width and length of the first portion 221. Preferably, the width of the first portion 221 should still not be greater than the length of the first portion 221. For example, the shape of the first portion 221 may be elongated, extending in a direction parallel to the elastic member 23. As shown, the shape of the first portion 221 may be generally oblong. However, other shapes, such as oval or rectangular, may also be used. This shape allows the first portion to pass more easily through the hole 41.

[0106] Conversely, the first attachment member 21 is configured such that it cannot pass through the hole 41. The hole 41 is configured to surround the neck 212 of the first attachment member 21, such that the edge of the hole 41 lies within the gap 214 between the first flange 211 and the second flange 213. Therefore, the width of the first flange 211 is greater than the width of the hole 41. The difference between the width of the first flange 211 and the width of the hole 41 is preferably large enough that the first flange 211 is not easily deformed to pass through the hole 41.

[0107] Preferably, the second portion 223 of the second attachment member 22 is configured such that when the second portion 223 is located within the through hole 222 in the first portion 221 of the second attachment member 22, the second portion 223 cannot pass through the hole 41. With the above arrangement, once the connector 20 is correctly connected, it is difficult to disassemble.

[0108] As shown in the figure, the cross-sectional shape of the first part 221 can be approximately rectangular. The rectangular shape reduces the thickness of the first part 221 while providing sufficient space for the through-hole 222. However, any shape can be used. Figure 15 As shown, the shape of the hole 41 can substantially correspond to the cross-sectional shape of the first part 221. However, this is not necessary.

[0109] The elastic member 23 can be configured to elastically deform, semi-elastically deform, or plastically deform to allow the first attachment member 21 and the second attachment member 22 to move relative to each other. Therefore, the elastic member 23 can be formed of an elastic material, such as natural or synthetic rubber (e.g., silicone rubber), PP (polypropylene), PU (polyurethane) or the like, TPE (thermoplastic elastomer), or combinations and mixtures thereof. The elastic member 23 can be configured to bend in any direction. However, it is permissible for the elastic member 23 to be configured to bend substantially only in planes parallel to the inner and outer layers of the device. The elastic member 23 can also be configured to extend along its axis.

[0110] like Figure 13 As shown, when connector 20 is attached to the inner and outer layers, elastic member 23 can be biased in a direction perpendicular to the plane of the inner and outer layers in a neutral state. Therefore, when the first attachment member 21 is attached to one of the inner or outer layers, the second attachment member 22 can press against said inner or outer layer, such as... Figure 14 As shown. Therefore, the elastic member 23 bends along a direction perpendicular to the central axis passing through the elastic member 23. This arrangement means that the connector 20 remains substantially parallel to the inner or outer layer during installation, to which the first attachment member 21 is attached, making it easier to attach the second attachment member 22 to the other of the inner or outer layers.

[0111] The elastic part 23 is preferably an elongated member, such as... Figures 13 to 15 As shown. The cross-sectional shape of the elastic member 23 can be oval (as shown), circular, or any other shape. The cross-sectional shape of the elastic part 23 should allow it to pass through the hole 41. The dimensions of the elastic part 23 should allow at least the amount of deformation required for the first attachment member 21 and the second attachment member 22 to move relative to each other as needed. For example, this can allow displacement in any direction between 5 mm and 30 mm, or preferably between 10 mm and 15 mm.

[0112] As shown in the figure, the first attachment member 21 can be formed of the same material as the elastic portion 23. As shown in the figure, the first portion 221 of the second attachment member 22 can be formed of the same material as the elastic portion 23. The elastic member 23 can be integrally formed with the first attachment member 21 and / or the first portion 221 of the second attachment member 22. Alternatively, these members can be made of different materials that are attached or co-molded together.

[0113] Figures 16 to 19 A second exemplary connector 20 according to this disclosure is shown. The second exemplary connector 20 includes a resilient portion 23 and a second attachment member 22 that are substantially the same as those of the first exemplary connector 20. However, as Figure 16 As shown, the first portion 221 of the second attachment member 22 also includes an elongated tail 226 projecting from it. As shown, the tail 226 extends substantially in the same direction as the first portion 221. The tail 226 is configured to assist in passing the first portion 221 through the hole 41 by providing a portion that can be more easily grasped and pulled through the hole 41.

[0114] like Figure 16 As shown, the first attachment member 22 differs from the first attachment member 22 of the first exemplary connector 20. In the second exemplary connector 20, the first attachment member 21 includes separate first and second segments 215 and 216, respectively... Figure 17 and Figure 18 As shown in the figure. The first section 215 includes a first flange 217 at the peripheral portion of the first section 215. The first section 215 also includes a recess 218 located at the center portion of the first section 215 within the peripheral portion, and a through hole 219 passing through the recess 218.

[0115] The second segment 216 of the first attachment member 21 includes a flange 2110 configured to be located within a recess 218 of the first segment 215; and a neck 212 configured to pass through a through-hole 219 of the first segment 215. The neck 212 connects to the remainder of the connector 20. Preferably, the first flange 217 of the first segment 215 and the flange 2110 of the second segment 218 (when the flange 2110 of the second segment 218 is located within the first flange 217 of the first segment 215) can together form a substantially flat, continuous surface. In other words, the top surface of the first flange 217 of the first segment 215 and the top surface of the flange 2110 of the second segment 218 can be substantially flush with each other. Flatness (i.e., the absence of noticeable undulations or corners) reduces the point pressure that will be felt if the surface of the first attachment member 21 will come into contact with the wearer of the device.

[0116] The first segment 215 and the second segment 216 of the first attachment member 21 can be configured to be assembled together by passing the remainder of the connector 20 through the through hole 219 until the flange 2110 is located in the recess 218. Therefore, the first portion 221 of the second attachment member 22 can have the size and shape of passing through the through hole 219.

[0117] The first section 215 of the first attachment member 21 may include a second flange 2112, both the second flange 2112 and the first flange 217 being adjacent to a gap 214. The gap 214 can be used to receive and retain a portion of an inner or outer layer within the gap 214 to which the first attachment member 21 will be attached. Alternatively, the second flange may be provided on the neck 212, or the resilient member 23 may serve as the second flange.

[0118] The first segment 215 of the first attachment member 21 can be formed of a relatively rigid material (e.g., PP (polypropylene), PA (polyamide), POM (polyoxymethylene), PC (polycarbonate), wood, or a metal such as aluminum or steel). However, the neck 212 can be formed of an elastic material. For example, this material can be the same material used to form the elastic member 23. The elastic member 23 can be integrally formed with the neck 212 of the first attachment member 21. Alternatively, these components can be made of different materials that are attached or co-molded together.

[0119] It should be understood that the connector 20 within the scope of this disclosure may include a first attachment member 21, a second attachment member 22, and / or a resilient portion that are different from those described above. For example, the connector 20 within the scope of this invention may include only one or only two components selected from the first attachment member 21, the second attachment member 22, and the resilient portion 23 described above, with the remaining portions being different.

[0120] As described above, the features of the inner and / or outer layers of the device can be configured to attach to a first attachment member 21 and a second attachment member 22 of the first and second exemplary connectors 20. For example, one of the inner or outer layers may include a hole 41 for attaching the first attachment member 21. One of the inner or outer layers may include a mechanism for attaching a fastening device, such as a slam dunk 31, to the second attachment member 22.

[0121] Given the above arrangement, it is preferred, but not mandatory, that the hole 41 is formed in a relatively thin layer. This makes attaching the first attachment member 21 easier. In some examples, the hole 41 may be formed in a recess in the layer. The recess may be configured to accommodate the first attachment member. This arrangement can further help reduce point pressure that will be felt if the first flange 211 will come into contact with the wearer of the device, or prevent the wearer's hair from being caught in the first attachment member 21. Furthermore, the edges of the hole 41 may be rounded (e.g., rather than square). The rounded edges may be formed by the shape of the stamping tool used to form the hole 41. This feature can extend the life of the device by reducing wear between the hole 41 and the connector.

[0122] Similarly, preferably, the mechanism 31 for attaching the fastening device is disposed in a relatively thick layer. This allows the mechanism 31 to be more securely fixed in the layer.

[0123] A preferred arrangement of the device could be an outer layer as the energy absorption layer 3 and an inner layer as the interface layer 13, for example... Figure 1 The arrangement shown in the diagram and described above. Figure 14 , Figure 19 and Figure 20 An exemplary connector 20 is shown as part of a connection arrangement within the device. Figure 14 The outer layer of the device is shown, which is the energy absorption layer 3. Figure 14 , Figure 19 and Figure 20 The inner layer of the device is shown, which is interface layer 13.

[0124] Now refer to Figure 14 , Figure 15 , Figure 19 and Figure 20 The assembly method of the device according to the present disclosure is described by way of the arrangement of the first attachment member 21 connected to the interface layer 13 and the second attachment member connected to the energy absorption layer 3. Figure 15 As shown in the diagram, the method includes passing the second attachment member 22 through a hole 41 in the interface layer 13 until the first attachment member 21 is adjacent to the hole 41. Figure 19 and Figure 20 As shown in the close-up image, the first attachment member 22 is then attached to the interface layer at the hole 41 via first and second flanges 211, 213 and 217, 2112. This could be a snap-fit ​​attachment. Figure 14 As shown, the second attachment component 22 is attached to the energy absorption layer 3, for example, by means of a fastening device 223 and a corresponding mechanism 31.

[0125] The method may include the step of assembling the second attachment member 22 by placing the fastening device 223 into the through hole 222. This may be done after the step of the second attachment member 22 passing through the hole 41. In the case of the second exemplary connector 20, the method may include the step of assembling the first attachment member 21 by placing the second portion 216 within the first portion 215. This may be done before the step of the second attachment member 22 passing through the hole 41. Alternatively, this may be done after or during the step of the second attachment member 22 passing through the hole 41. For example, the first portion 215 of the first attachment member 21 may be pre-attached to the interface layer, and then the second attachment member may pass through the first portion 215 of the first attachment member 21 and the hole 41.

[0126] It should be understood that connector 20 can be used to connect any two parts of the device together, such as any of the layers described above. Furthermore, connector 20 is described as having a first part (e.g., an interface layer) connected to a first component of the device and a second part (e.g., an energy absorption layer) connected to a second component of the device; it should be understood that this can be reversed with appropriate modifications.

[0127] In view of the above teachings, variations of the above embodiments are possible. It should be understood that the invention may be practiced in other ways, and is specifically described herein, without departing from the spirit and scope of the invention.

Claims

1. A protective headgear, comprising: The inner layer, which is an interface layer configured to contact the wearer's head, is formed of a relatively thin, low-friction sheet and includes at least one hole for receiving at least one connector. The outer layer is the energy absorption layer; The inner layer and the outer layer are configured to slide relative to each other at the sliding interface in response to an oblique impact, and the thin, low-friction sheet of the inner layer is configured to slide against the outer layer. Furthermore, the protective headgear also includes: At least one connector connecting the inner layer and the outer layer, the connector comprising: A first attachment component is used to attach to the inner layer; A second attachment component is used to attach to the outer layer; wherein: The first attachment member and the second attachment member are connected in such a way that when the inner layer and the outer layer move relative to each other, the first attachment member and the second attachment member are allowed to move relative to each other, and The first attachment component includes: A first flange portion adjacent to the gap, the gap being for accommodating a portion of the inner layer, the first flange portion holding the inner layer within the gap, such that the first flange portion is disposed on the inner side of the inner layer and applies point pressure to the wearer's head during use, and The first flange is generally dome-shaped and substantially flat.

2. The protective headgear according to claim 1, wherein, The first flange has a thickness between 0.5 mm and 2 mm.

3. The protective headgear according to claim 1, wherein, The connector further includes an elastic member that connects the first attachment member and the second attachment member.

4. The protective headgear according to claim 3, wherein, The connector also includes a neck that connects the first flange to the elastic member, the neck being bent at a 90-degree angle such that the central axis passing through the first flange is substantially perpendicular to the central axis passing through the elastic member.

5. The protective headgear according to claim 4, wherein, The attachment between the first attachment component and the inner layer is performed in a direction substantially perpendicular to the inner layer, and the connector extends substantially parallel to the inner layer.

6. The protective headgear according to claim 1, wherein, The first attachment member includes a second flange portion disposed on the side of the gap opposite to the first flange portion.

7. The protective headgear according to claim 6, wherein: The connector further includes a neck and a resilient member, the neck connecting the first flange to the resilient member, and the resilient member connecting the first attachment member to the second attachment member, wherein the neck is bent at a 90-degree angle such that the central axis passing through the first flange is substantially perpendicular to the central axis passing through the resilient member. The inner layer includes a hole through which the connector passes, and the hole is configured to surround the neck of the first attachment member such that the edge of the hole lies between the first flange and the second flange within the gap; and The second attachment member includes a first portion and a second portion, the first portion having a through-hole, the second portion passing through the through-hole and attached to the inner layer, and the second attachment member being configured such that the first portion can pass through a hole in the inner layer; and The first attachment member is configured such that the first attachment member cannot pass through the hole.

8. A method for assembling a protective headgear article according to any one of claims 1 to 7, the method comprising: The second attachment member is passed through a hole in the inner layer until the first attachment member is adjacent to the hole; At the hole, the first attachment member is attached to the inner layer via the first flange; and The second attachment component is attached to the outer layer.

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