Bicycle helmet

Abstract

The present invention relates to a bicycle helmet (100) for a cyclist, comprising a helmet body (101), wherein the helmet body (101) has an inner damping layer (103), and wherein the helmet body (101) has an outer plastic shell (105) which is connected to the inner damping layer (103), wherein a plurality of recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are formed in an outer shell surface (109) of the outer plastic shell (105) facing away from the inner damping layer (103), wherein the helmet body (101) has a plurality of surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7), each of which is detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) and is designed to detach from the helmet body (101) upon impact of the bicycle helmet (100) in order to protect the head and neck of the cyclist.

Description

Technical field

[0001] The present invention relates to an improved bicycle helmet with a plurality of surface elements, each of which is received in recesses of an outer plastic shell of the bicycle helmet and is designed to detach from the helmet body in the event of an impact of the bicycle helmet in order to protect the head and neck of the cyclist. State of the art

[0002] It is well known that the risk of accidents for cyclists is significantly higher compared to other road users, with head injuries being the most common consequence. During an accident, especially during an impact, i.e., a collision and / or fall, the forces acting on the cyclist's head can lead to a wide variety of head and neck injuries, such as fractures, soft tissue injuries, concussion, traumatic brain injury, spinal injuries, and broken necks. Such injuries can lead to serious health problems for the cyclist involved in the accident, or in some cases, even result in their death.

[0003] It is known that a variety of differently manufactured bicycle helmets can be used by cyclists to minimize the consequences of an accident.

[0004] Conventional bicycle helmets often have areas with the largest possible deformation range in order to provide a crumple zone, so that in the event of an impact of the bicycle helmet the translational accelerations acting on the cyclist's head can be reduced.

[0005] The function of a bicycle helmet is to absorb and dissipate the forces acting on the head as a result of an impact, in order to reduce the risk of injury to the cyclist.

[0006] At the same time, it is desirable that bicycle helmets have the lowest possible weight in order to minimize the increased strain on the cyclist's spinal column due to higher inertia.

[0007] To achieve both low weight and high shock absorption, conventional bicycle helmets are predominantly made of plastic materials.

[0008] Conventional bicycle helmets typically have a hard outer plastic shell on one side, which allows the helmet to slide off the ground or an obstacle, distributes the applied force over a large area, and prevents the helmet from breaking apart upon impact.

[0009] On the inside of the outer plastic shell of conventional bicycle helmets is an inner cushioning layer, often referred to as a liner, made of a plastically deformable material. This inner cushioning layer absorbs the forces transmitted through the outer plastic shell by deforming, thus reducing the risk of head injury to the cyclist.

[0010] To ensure plastic deformability, conventional internal damping layers are often made of polymeric foams, in which the polymer forms a cellular matrix containing trapped gas, particularly air. These conventional polymeric foams are produced by converting the polymer into a deformable, flowable state, followed by foaming and subsequent solidification. Commonly used polymers include polystyrene (PS), as well as the polyolefins polyester (PE), polypropylene (PP), and polyvinyl chloride (PVC).

[0011] To ensure effective air exchange between the inner and outer areas of the bicycle helmet, which face the cyclist's head, conventional bicycle helmets often feature numerous ventilation openings that penetrate both the outer plastic shell and the inner cushioning layer. This helps prevent the cyclist's head from overheating.

[0012] Furthermore, conventional bicycle helmets often have an adjustment mechanism to adapt the helmet to different head sizes of different cyclists.

[0013] Furthermore, conventional bicycle helmets often have a fastener that secures the helmet below the cyclist's chin to prevent loss of contact between the helmet and the cyclist's head in the event of an accident.

[0014] If, during the impact of a bicycle helmet, the forces acting on it are not concentrated centrally but instead act off-center, for example on one side, a torque may be induced in the helmet. This torque can lead to rotational accelerations acting on the cyclist's head. Such rotational accelerations can cause the cyclist's head to twist, resulting in serious neck injuries such as spinal injuries or even a broken neck.

[0015] Conventional bicycle helmets have the problem that, in complex accident scenarios, the risk of neck injury to the cyclist is often not sufficiently reduced due to the rotational accelerations that occur. Particularly in a collision with a motor vehicle or a fall onto the road, such a bicycle accident can often lead to serious neck injuries for the cyclist, even when wearing a helmet.

[0016] Another problem is that in cycling, e.g. in road cycling or mountain biking, during an accident, due to high impact speeds or obstacles in the cyclist's path of fall, there is still an increased risk of injury not only to the head but also to the neck of the cyclist, despite the use of a bicycle helmet.

[0017] WO 2020 / 245609 A1 discloses a bicycle helmet with a shock-absorbing layer and a plastic shell, which is firmly connected to the shock-absorbing layer by a connecting element.

[0018] WO 2016 / 209740 A1 discloses an energy management system for a helmet.

[0019] The AU 2017 245 280 A1 reveals a multiply buffered safety helmet.

[0020] The WO 2020 / 260185 A1 reveals a helmet.

[0021] EP 3 583 863 A2 reveals a helmet with damping in a rotational impact.

[0022] The WO 2018 / 097785 A1 reveals a helmet with padding.

[0023] US 10,834,987 B1 reveals a protective layer for helmets.

[0024] EP 3 704 980 A1 discloses anatomical protective elements or objects, e.g. a helmet.

[0025] EP 2 907 403 B1 discloses a helmet with shock absorption.

[0026] The WO 2017 / 046757 A1 reveals a safety helmet.

[0027] US patent 2020 / 0367596 A1 reveals a helmet with shock-absorbing inserts.

[0028] The WO 2021 / 043207 A1 reveals an impact protection technology.

[0029] US patent 2015 / 0047110 A1 discloses a bicycle helmet with a plastic shell which has ventilation openings, wherein a shock-absorbing layer is arranged on the inside of the plastic shell.

[0030] US patent 2019 / 0231018 A1 discloses a bicycle helmet with an inner shell and an outer shell, wherein a shock-absorbing layer is arranged between the inner shell and the outer shell.

[0031] DE 10 2013 018 345 A1 discloses a reinforcement structure for a bicycle helmet and its manufacturing process, wherein the reinforcement structure comprises a helmet shell made of damping material and a structural body.

[0032] The DE 10 2015 101 194 U1 discloses a bicycle helmet comprising an outer shell with a core made of foam.

[0033] EP 2 804 500 B1 discloses a protective helmet with an outer shell, an inner layer, and a functional and / or decorative layer placed between the outer shell and the inner layer.

[0034] DE 10 2007 006 860 A1 discloses a protective head covering for cyclists in particular, with a protective structure formed from spaced-apart stiffeners.

[0035] EP 0 612 843 A1 discloses a bicycle crash helmet made of blown plastic in which openings have been realized.

[0036] DE 10 2011 110 992 A1 discloses a bicycle helmet with an energy-absorbing layer that acts as an impact damper during an impact, and an outer shell that is arranged outside the energy-absorbing layer.

[0037] EP 3 000 341 A1 discloses a protective helmet comprising an outer contour curved in space and an inner contour also curved in space, as well as rib-like elements extending between the outer contour and the inner contour, stiffening the protective helmet.

[0038] DE 198 45 916 A1 discloses open-pored metal sponges shaped into inserts, which form a non-elastically deformable impact element in helmets and on impact surfaces used in protective clothing for motorcyclists, and which absorbs shocks.

[0039] DE 10 2017 108 038 A1 discloses an adjustable damping insert for a protective helmet with a damping layer that has a plurality of damping elements.

[0040] DE 20 2016 100 235 U1 discloses a protective helmet with a helmet shell and with a damping layer arranged in the helmet shell, which has a plurality of damping elements.

[0041] DE 10 2014 110 480 A1 discloses a bicycle helmet comprising a shock-absorbing helmet body and an outer shell for the helmet body, wherein the outer shell is made of acrylonitrile butadiene styrene (ABS) and wherein several ventilation openings extend through the outer shell and through the helmet body.

[0042] EP 2 296 500 B1 discloses a crash helmet consisting of a thin and hard outer shell and a thick and soft inner shell, with at least one opening in the inner shell and the outer shell.

[0043] US patent 2017 / 065018 A1 discloses a football helmet comprising a helmet shell and a chin guard, wherein a damping layer is arranged on the inner surface of the helmet shell. It also discloses a bicycle helmet with surface elements detachably arranged in recesses in the shell, according to the preamble of claim 1.

[0044] US patent 2020 / 178636 A1 discloses a helmet with an internally arranged damping layer and a hard outer helmet layer, wherein an intermediate layer is arranged between the damping layer and the outer helmet layer, which allows the outer helmet layer to shift relative to the damping layer. Disclosure of invention

[0045] The present invention aims to create a bicycle helmet which provides advantageous protection for the head and neck of a cyclist in the event of an accident.

[0046] The object of the invention is achieved by a bicycle helmet according to claim 1. The dependent claims describe preferred embodiments.

[0047] According to a first aspect of the present invention, the bicycle helmet according to the invention for a cyclist comprises a helmet body, wherein the helmet body has an inner damping layer, and wherein the helmet body has an outer plastic shell which is connected to the inner damping layer, wherein a plurality of recesses are formed in a shell outer surface of the outer plastic shell facing away from the inner damping layer, wherein the helmet body has a plurality of surface elements which are each detachably received in the recesses and are designed to detach from the helmet body upon impact of the bicycle helmet in order to protect the head and neck of the cyclist.

[0048] The bicycle helmet according to the invention has the advantage that during an impact of the cyclist, forces acting not only on the cyclist's head but also on the cyclist's neck can be significantly reduced, so that the probability of injuries to the head or neck of the cyclist can be significantly reduced.

[0049] While the inner damping layer and the outer plastic shell effectively protect the cyclist's head from translational accelerations, the surface elements detachably held in the recesses of the outer plastic shell provide particularly effective protection for the cyclist's head and neck from rotational accelerations and torques.

[0050] The outer plastic shell of the helmet body serves to distribute forces over a surface area and prevents the inner damping layer, particularly the liner, from breaking apart. The inner damping layer, made of a plastically deformable material, absorbs the forces introduced by the outer plastic shell through plastic deformation, thus significantly reducing the risk of head injury to the cyclist. The inner damping layer is located on the inner side of the outer plastic shell, facing the cyclist's head. Specifically, when a force is applied to the helmet during an impact, the inner damping layer is compressed to effectively absorb peak forces acting on the helmet.

[0051] The surface elements, which are detachably inserted into the recesses of the outer plastic shell, ensure particularly effective protection of the head and neck against rotational accelerations and torques.

[0052] In a normal operating state of the bicycle helmet, for example during a normal bicycle ride, the surface elements incorporated in the recesses ensure a structurally uniform helmet body.

[0053] In the event of an impact, pressure impulses act on the helmet body. These impulses are not only felt centrally but also laterally, inducing a torque and causing rotational acceleration of the cyclist's head and neck. In this case, the detachable connection between the surface elements and the recesses releases, causing the surface elements to be flung away from the helmet body due to the rotational acceleration. This deflection absorbs and dissipates some of the rotational acceleration acting on the cyclist's head and neck. As a result, the total amount of rotational acceleration acting on the cyclist's head and neck is significantly reduced, thus preventing serious head and neck injuries.The extent of injuries to the head and neck of the cyclist can be significantly reduced.

[0054] In particular, the recesses are shaped as openings that completely penetrate the outer plastic shell. Alternatively, the recesses are merely shaped as indentations in the outer surface of the outer plastic shell, which do not completely penetrate the outer plastic shell.

[0055] In particular, each recess of the plurality of recesses contains a single surface element of the plurality of surface elements that can be detachedly included. Alternatively, each recess of the plurality of recesses contains a plurality of surface elements that can be detachedly included.

[0056] In particular, the inner damping layer is permanently bonded to the outer plastic shell, so that the inner damping layer cannot be removed from the outer plastic shell. Alternatively, the inner damping layer is at least partially, and in particular completely, detachably bonded to the outer plastic shell, so that the inner damping layer can be removed from the outer plastic shell, at least partially, and in particular completely.

[0057] According to the invention, the helmet body has a neck area designed to rest against the neck of the cyclist, the helmet body has a first side area, in particular a first temple area, designed to rest against the left side of the cyclist's head, in particular a left temple, the helmet body has a second side area, in particular a second temple area, designed to rest against the right side of the cyclist's head, in particular a right temple, and the helmet body has a top area designed to rest against the top of the cyclist's head, wherein the recesses formed in the outer surface of the outer plastic shell are arranged in the neck area, in the first side area, in the second side area and in the top area of ​​the helmet body.and wherein the surface elements, which are detachably received in the recesses, are arranged in the neck area, in the first side area, in the second side area and in the upper area of ​​the helmet body.

[0058] This achieves the technical advantage that the surface elements incorporated into the recesses effectively cover the corresponding relevant areas of the helmet body.

[0059] This ensures that, in the event of pressure impulses acting on the helmet body from different directions, the corresponding surface elements will in all cases detach from the recess and thereby effectively reduce the rotational acceleration and torques acting on the head and neck of the cyclist.

[0060] For example, if a pressure impulse acts on the first side area of ​​the helmet body, the surface element detaches from the first side area of ​​the helmet body and is thrown away.

[0061] If the first side area and / or second side area of ​​the helmet body is designed in particular as a first temple area and / or second temple area of ​​the helmet body, the corresponding first and / or second temple area not only protects the respective side of the head, but also the respective temple of the head, so that the corresponding first and / or second temple area extends further downwards along the respective side of the cyclist's head compared to the corresponding first and / or second side area.

[0062] InIn one embodiment, the surface elements comprise a first neck surface element, which is detachably received in a neck recess arranged in the neck area of ​​the helmet body, and the surface elements comprise a second back of the head surface element, which is detachably received in a back of the head recess arranged between the neck area and the upper area of ​​the helmet body, and the surface elements comprise a first side surface element, in particular a first temple surface element, which is detachably received in a first side recess, in particular a first temple recess, arranged in the first side area, in particular in the first temple area, of the helmet body, and the surface elements comprise a second side surface element, in particular a second temple surface element, which is received in a second side recess arranged in the second side area, in particular in the second temple area, of the helmet body.in particular a second temple recess, detachably received, wherein the first side surface element and the second side surface element are in particular shaped symmetrically to each other, and the surface elements comprise a first upper area surface element which is detachably received in a first upper area recess arranged in the upper area of ​​the helmet body, and / or the surface elements comprise a second upper area surface element which is detachably received in a second upper area recess arranged in the upper area of ​​the helmet body, and / or the surface elements comprise a third upper area surface element which is detachably received in a third upper area recess arranged in the upper area of ​​the helmet body, wherein the second upper area surface element and the third upper area surface element are in particular shaped symmetrically to each other.

[0063] This achieves the technical advantage that the surface elements incorporated in the recesses effectively cover the relevant areas of the helmet body, thus effectively reducing rotational accelerations and torques acting on the head and neck of the cyclist.

[0064] In particular, the first neck surface element and the second back of the head surface element can be thrown backwards upon impact to the rear of the helmet body. In particular, the first and / or second side surface element can be thrown laterally in the corresponding direction upon impact to the side of the helmet body. In particular, the first, second, and / or third upper surface element can be thrown upwards upon impact to the upper part of the helmet body.

[0065] InIn one embodiment, at least one surface element of the plurality of surface elements has at least one ventilation opening, wherein in particular the first upper surface element has at least one ventilation opening, and / or wherein in particular the second upper surface element has a ventilation opening, and / or wherein in particular the third upper surface element has a ventilation opening.

[0066] This achieves the technical advantage that the ventilation openings of the surface elements allow effective ventilation of the cyclist's head, enabling effective heat dissipation from the cyclist's head to an exterior area of ​​the bicycle helmet.

[0067] In particular, the ventilation openings in the first, second, and / or third upper surface element are shaped on the top of the helmet body to ensure particularly effective heat dissipation from the cyclist's head.

[0068] In particular, the first surface element has four ventilation openings. In particular, the second surface element has a single ventilation opening. In particular, the third surface element has a single ventilation opening.

[0069] In one embodiment, the outer plastic shell has a plurality of further ventilation openings, wherein in particular at least one first further ventilation opening is formed between the first neck surface element and the second neck surface element in the neck area of ​​the helmet body, and / or wherein in particular a second further ventilation opening is formed between the first neck surface element and the first side surface element in the neck area of ​​the helmet body, and / or wherein in particular a third further ventilation opening is formed between the first neck surface element and the second side surface element in the neck area of ​​the helmet body, and / or wherein in particular a fourth further ventilation opening is formed between the first side surface element and the second top surface element in the first side area of ​​the helmet body.and / or wherein, in particular, a fifth further ventilation opening is formed between the second side surface element and the third top surface element in the second side area of ​​the helmet body, wherein, in particular, at least a sixth further ventilation opening is formed in alignment with at least one ventilation opening of the first top surface element, and / or wherein, in particular, at least a seventh further ventilation opening is formed in alignment with a ventilation opening of the second top surface element, and / or wherein, in particular, at least an eighth further ventilation opening is formed in alignment with a ventilation opening of the third top surface element.

[0070] This achieves the technical advantage that the additional ventilation openings formed in the outer plastic shell allow for effective ventilation of the cyclist's head, either as an alternative or in addition to the ventilation openings formed in the surface elements.

[0071] In this context, at least one first further ventilation opening includes two first further ventilation openings. In this context, at least one sixth further ventilation opening includes four sixth further ventilation openings.

[0072] In one embodiment, the surface elements, which are detachably received in the recesses, are detachably connected to the outer plastic shell and / or to the inner damping layer by means of connecting elements, wherein in particular the connecting elements are permanently or detachably connected to the surface elements.

[0073] This achieves the technical advantage that, on the one hand, the connecting elements ensure an effective, secure retention of the surface elements in the recesses during the normal operating state of the bicycle helmet, and on the other hand, the connecting elements ensure that the surface elements can detach from the outer plastic shell and / or from the inner damping layer in the event of an impact.

[0074] In particular, the connecting elements are permanently bonded to the surface elements, so that if the surface elements detach from the outer plastic shell and / or the inner damping layer and are ejected, the connecting elements, as part of the surface elements, also detach and are ejected along with the surface elements. Specifically, the connecting elements are integrally formed with the surface elements or are permanently bonded to the surface elements by a material-bonded connection, in particular by an adhesive bond or a welded connection.

[0075] Alternatively, the connecting elements can be detachably connected to the surface elements, so that in the event of an impact of the helmet body, the respective connecting element can detach from the respective surface element, causing the respective surface element and the respective connecting element to be ejected separately. In this case, the detachable connection between the respective connecting element and the respective surface element can be achieved, in particular, by a predetermined release point, especially a predetermined breaking point, in the respective connecting element.

[0076] In particular, the connecting elements are detachably connected to the outer plastic shell and the inner damping layer, so that in the event of an impact of the bicycle helmet, both the connection between the respective connecting element and the outer plastic shell and the connection between the respective connecting element and the inner damping layer are released in order to detach the respective surface element from the helmet body.

[0077] In particular, the connecting elements are only detachably connected to the outer plastic shell, so that in the event of an impact of the bicycle helmet, only the connection between the respective connecting element and the outer plastic shell is released in order to detach the respective surface element from the helmet body.

[0078] In particular, the connecting elements are only detachably connected to the inner damping layer, so that in the event of an impact of the bicycle helmet only the connection between the respective connecting element and the inner damping layer is released in order to detach the respective surface element from the helmet body.

[0079] In one embodiment, the connecting elements are arranged on an underside of the surface elements facing the inner damping layer and are detachably connected to an upper side of the inner damping layer facing the surface elements.

[0080] This achieves the technical advantage of creating an effective, detachable connection between the surface elements and the inner damping layer.

[0081] In one embodiment, a plurality of element receptacles are arranged in the upper surface of the inner damping layer, into each of which a connecting element detachably engages, wherein the connecting elements in particular comprise deformable projection elements, connecting screws, connecting buttons, connecting pins and / or connecting bolts, which detachably engage in the respective element receptacles.

[0082] This achieves the technical advantage that, by engaging a connecting element in the respective element receptacle, an effective, releasable fastening of the respective surface element to the inner damping layer can be achieved.

[0083] The connecting elements can include deformable protrusion elements, which are in particular formed from an elastomer, such that the deformable protrusion elements deform when inserted into the element receptacles and, in the inserted state, exert a force on the wall of the element receptacles to ensure an effective fastening, wherein, in the event of an impact due to the pressure impulse exerted on the deformable protrusion element, the deformable protrusions in the inserted state deform again and slide out of the element receptacles to achieve a release of the detachable connection.

[0084] The connecting elements can include connecting screws that are received in the element receptacles. The corresponding connecting screws each have a screw head and a screw shank connected to the screw head, the respective screw shank being received in the respective element receptacle of the inner damping layer. Specifically, the respective element receptacles each have an internal screw thread, and the respective screw shanks of the respective connecting screws each have an external screw thread that is screwed into the respective internal screw thread to fasten the connecting screw to the inner damping layer.

[0085] In this process, the respective connecting screw can be detached from the inner damping layer upon impact, particularly by the breakage of the screw shank, specifically at the junction between the screw head and the screw head. The screw shank is designed with a predetermined breaking point to ensure controlled breakage upon impact and effective detachment of the connecting screw.

[0086] The connecting elements can also include connecting buttons, which are received in the element receptacles. These connecting buttons have a push button that allows them to be attached to the corresponding element receptacle by applying pressure to the respective push button.

[0087] The connecting elements can include connecting pins and / or connecting bolts, which are received in the element receptacles. The connecting pins and / or connecting bolts can, in particular, have at least one barb, which is made of an elastomer, and which engages the element receptacle in such a way that, upon application of a pressure impulse to the surface elements, the barb is folded in, in order to detach the surface elements from the helmet body.

[0088] In one embodiment, a plurality of first stud elements are arranged on the upper surface of the inner damping layer, and the connecting elements arranged on the underside of the surface elements comprise a plurality of second stud elements, wherein the first and second stud elements interlock mutually to provide the releasable connection between the surface elements and the inner damping layer.

[0089] This achieves the technical advantage that, through the mutual interlocking of the studded elements in the normal operating state of the bicycle helmet, a sufficiently stable attachment of the surface elements to the inner damping layer can be achieved, and that, on the other hand, in the event of pressure impulses acting on the helmet body, the connection between the first studded elements and the second studded elements can be released again to ensure effective detachment of the surface elements from the helmet body.

[0090] In one embodiment, the first and second stud elements each have a shaft, wherein a head, in particular a hemispherical head, is arranged at each shaft end, the heads of the first stud elements mutually interlocking the heads of the second stud elements.

[0091] This achieves the technical advantage that, through the mutual interlocking of the respective heads of the first stud elements and the second stud elements, an effective fastening of the surface elements to the helmet body can be ensured.

[0092] In one embodiment, the connecting elements each have a predetermined release point which is designed to release the detachable connection between the surface elements and the outer plastic shell and / or the inner damping layer, wherein the respective predetermined release point is particularly designed to release the detachable connection between the surface elements and the outer plastic shell and / or the inner damping layer when a pressure impulse is exerted on the respective surface element.

[0093] This achieves the technical advantage that the respective release point of the respective connecting element ensures that the respective surface element can effectively detach from the outer plastic shell and / or from the inner damping layer, especially in the event of an impact of the bicycle helmet, whereby a pressure impulse is exerted on the respective surface element by the impact.

[0094] In particular, the respective predetermined release point is designed as a predetermined breaking point of the connecting element, which causes a break in the connecting element when the pressure impulse exerted on the respective surface element exceeds a pressure impulse threshold value.

[0095] Alternatively, in particular, the respective release point only causes the connecting element to detach from the outer plastic shell and / or from the inner damping layer if the pressure impulse exerted on the respective surface element exceeds a pressure impulse threshold value, so that in this case the connecting element is not damaged, and therefore the corresponding connecting elements together with the surface elements can be reused.

[0096] In one embodiment, a plurality of undercuts are formed in the outer plastic shell and / or in the inner damping layer, which are connected to the recesses, wherein the surface elements which are detachably received in the recesses have projections, in particular lips, which are detachably received in the undercuts.

[0097] This achieves the technical advantage that, by releasably picking up, in particular releasably engaging the projections, especially the lips, of the surface elements in the undercuts of the outer plastic shell and / or the inner damping layer, an effective releasable fastening of the surface elements to the helmet body can be achieved as an alternative or in addition to the use of the connecting elements.

[0098] In this case, the undercuts can be formed exclusively in the outer plastic shell, so that the projections of the surface elements engage exclusively in the outer plastic shell.

[0099] Alternatively, the undercuts can be formed exclusively in the inner damping layer, so that the projections of the surface elements engage exclusively in the inner damping layer.

[0100] Additionally, the undercuts can be formed in both the outer plastic shell and the inner damping layer, so that the projections of the surface elements engage in both the outer plastic shell and the inner damping layer. In this case, the undercuts can, in particular, comprise at least one first undercut formed in the outer plastic shell, into which at least one first projection of the surface element engages, and the undercuts can, in particular, comprise at least one second undercut formed in the inner damping layer, into which at least one second projection of the surface element engages.

[0101] In particular, each undercut has a first contour that interacts with a second contour of the projection accommodated in the respective undercut to ensure that the respective surface element is held in the undercut. Specifically, a pressure pulse along a predetermined direction cancels the interaction between the first and second contours to ensure that the projection is released from the undercut.

[0102] If at least one of the undercuts is formed, particularly in the inner damping layer, the corresponding second contour of the corresponding at least one undercut is flush with the first contour of the recorded projection, particularly flush with the outside of the inner damping layer.

[0103] In one embodiment, the undercuts are formed between the outer plastic shell and a layer top surface of the inner damping layer facing the surface elements.

[0104] This achieves the technical advantage of enabling the effective integration of undercuts into the helmet body.

[0105] Alternatively, the undercuts can also be formed within the outer plastic shell, so that in this case the undercuts can be arranged in the helmet body, in particular spaced away from the inner damping layer.

[0106] In one embodiment, the bicycle helmet has a flexible fabric layer which is arranged between the inner damping layer and the outer plastic shell, wherein the surface elements received in the recesses are detachably attached to the flexible fabric layer and are designed to detach from the helmet body in the event of an impact of the bicycle helmet in order to protect the head and neck of the cyclist.

[0107] This achieves the technical advantage that, through the detachable connection of the surface elements with the flexible fabric layer, particularly effective protection of the cyclist's head and neck can be achieved.

[0108] Due to the flexible properties of the flexible fabric layer, the surface elements attached to the flexible fabric layer can be moved at least section by section within the recess in order to absorb and compensate for peak forces acting on the surface elements.

[0109] If the peak forces acting on the surface elements are so large that one degree of freedom of displacement of the flexible fabric layer is no longer sufficient to absorb the peak forces, then the detachable connection between the surface elements and the flexible fabric layer breaks down and the surface element is flung away from the helmet body in order to dissipate the peak forces.

[0110] The detachable connection between the surface elements and the flexible fabric layer can, in particular, comprise various detachable connections that only detach when a force threshold is exceeded, which is a threshold required for the displacement of the flexible fabric layer. Thus, under low forces acting on the surface elements, only a displacement of the surface elements with the flexible fabric layer occurs, and only when the force threshold is exceeded does the detachable connection between the flexible fabric layer and the surface elements detach.

[0111] In particular, the surface elements are detachably connected to the flexible fabric layer by a felt connection. Alternatively, the surface elements are connected to the flexible fabric layer, in particular by further connecting elements, wherein the further connecting elements in particular have a predetermined release point, in particular a predetermined breaking point, which is in particular designed to detach, in particular to break, upon exceeding the force threshold.

[0112] In one embodiment, the outer plastic shell has overlapping sections which abut an outside of the surface elements and / or under-interlocking sections which abut an inside of the surface elements, wherein the under-interlocking sections are arranged in particular between the inside of the surface elements and a layer top surface of the inner damping layer facing the surface elements in order to provide the releasable connection between the surface elements and the outer plastic shell.

[0113] This achieves the technical advantage that, through the corresponding overlapping sections and / or under-interlocking sections of the outer plastic shell, an effective external and / or internal detachable connection between the surface elements and the outer plastic shell can be provided.

[0114] In particular, the outer plastic shell can have overlapping sections and / or under-interlocking sections which are detachably attached to the outside and / or inside of the surface elements, and the surface elements can have projections, in particular lips, which detachably engage in undercuts of the outer plastic shell, wherein the undercuts are in particular each limited by an overlapping section and by an under-interlocking section.

[0115] In one embodiment, the outer plastic shell is formed from carbon fiber reinforced plastic (CFRP), acrylonitrile butadiene styrene copolymer (ABS), polycarbonate (PC), polyoxymethylene (POM), polypropylene (PP), and / or polystyrene (PS), and / or the surface elements are formed from carbon fiber reinforced plastic (CFRP), acrylonitrile butadiene styrene copolymer (ABS), polycarbonate (PC), polyoxymethylene (POM), polypropylene (PP), and / or polystyrene (PS), and / or the inner damping layer is formed from polystyrene (PS), polyester (PE), polypropylene (PP), and / or polyvinyl chloride (PVC), additively manufactured polyamide, extruded polymers, in particular expanded polystyrene (EPS) and / or expanded polypropylene (EPP), and / or from a copolymer of polystyrene (PS) and polypropylene (PP).

[0116] This achieves the technical advantage that the aforementioned materials of the outer plastic shell and / or the surface elements ensure sufficient structural hardness of the outer plastic shell and / or the surface elements, and that the aforementioned materials of the inner damping layer ensure effective plastic deformability of the inner damping layer. Brief description of the characters

[0117] The invention will now be explained with reference to the accompanying figures, which show exemplary and non-limiting embodiments of the invention, wherein Figure 1 and 2 different views of a bicycle helmet for a cyclist according to a first embodiment of the present invention show, Figure 3 a schematic sectional view of an area of ​​a bicycle helmet according to a second embodiment of the present invention shows, Figure 4a schematic sectional view of an area of ​​a bicycle helmet according to a third embodiment of the present invention shows, Figure 5 a schematic sectional view of an area of ​​a bicycle helmet according to a fourth embodiment of the present invention shows, Figure 6 a schematic sectional view of an area of ​​a bicycle helmet according to a fifth embodiment of the present invention shows, Figure 7 a schematic sectional view of an area of ​​a bicycle helmet according to a sixth embodiment of the present invention shows, Figure 8 a schematic sectional view of an area of ​​a bicycle helmet according to a seventh embodiment of the present invention shows, Figure 9 a schematic sectional view of an area of ​​a bicycle helmet according to an eighth embodiment of the present invention shows, Figure 10a schematic sectional view of an area of ​​a bicycle helmet according to a ninth embodiment of the present invention shows, Figure 11 a schematic sectional view of an area of ​​a bicycle helmet according to a tenth embodiment of the present invention shows, Figure 12 a schematic sectional view of an area of ​​a bicycle helmet according to an eleventh embodiment of the present invention shows, Figure 13 a schematic sectional view of an area of ​​a bicycle helmet according to a twelfth embodiment of the present invention shows, Figure 14 a schematic sectional view of an area of ​​a bicycle helmet according to a thirteenth embodiment of the present invention shows, Figure 15 a schematic sectional view of an area of ​​a bicycle helmet according to a fourteenth embodiment of the present invention shows, Figure 16a schematic sectional view of an area of ​​a bicycle helmet according to a fifteenth embodiment of the present invention shows, Figure 17 a schematic sectional view of an area of ​​a bicycle helmet according to a sixteenth embodiment of the present invention shows, Figure 18 a schematic sectional view of an area of ​​a bicycle helmet according to a seventeenth embodiment of the present invention, and Figure 19 a schematic sectional view of an area of ​​a bicycle helmet according to an eighteenth embodiment of the present invention. Detailed description of the figures

[0118] The Figure 1 and 2 The figures show various views of a bicycle helmet 100 for a cyclist according to a first embodiment of the present invention. In the Figure 1 and 2 The bicycle helmet 100 is shown in an exploded view, with the Figure 1a rear oblique view of the bicycle helmet 100 and in the Figure 2 A front oblique view of the bicycle helmet 100 is shown.

[0119] The bicycle helmet 100 has a helmet body 101, which protects the cyclist's head. The bicycle helmet 100 has a Figure 1 and Figure 2 The helmet features an adjustment mechanism (not shown) that can be adjusted by the cyclist to effectively fit the bicycle helmet 100 to the cyclist's head circumference. The bicycle helmet 100 also has a [feature / component] Figure 1 and Figure 2 a not shown closure which fixes the bicycle helmet 100 below the cyclist's chin, so that in the event of an accident the bicycle helmet 100 does not lose contact with the cyclist's head.

[0120] The helmet body 101 has an inner damping layer 103. The helmet body 101 has an outer plastic shell 105, which is connected to the inner damping layer 103. In particular, the inner damping layer 103 is permanently connected to the outer plastic shell 105, or the inner damping layer 103 is detachably connected to the outer plastic shell 105, so that the inner damping layer 103 can be removed from the outer plastic shell 105.

[0121] The outer plastic shell 105 is typically made of a hard plastic, so that in the event of an accident the bicycle helmet 100 can effectively slide off the ground and the bicycle helmet 100 cannot break apart upon impact. In particular, the hard plastic of the outer plastic shell 105 of the helmet body 101 comprises carbon fiber reinforced plastic (CFRP), acrylonitrile butadiene styrene copolymer (ABS), polycarbonate (PC), polyoxymethylene (POM), polypropylene (PP), and / or polystyrene (PS).

[0122] The inner damping layer 103 is arranged on the inside of the outer plastic shell 105. This inner damping layer is made of a plastically deformable material to reduce the forces introduced by the outer plastic shell 105 through plastic deformation, thereby reducing the risk of head injury to the cyclist. In particular, the plastically deformable material of the inner damping layer 103 comprises polystyrene (PS), polyester (PE), polypropylene (PP) and / or polyvinyl chloride (PVC), additively manufactured polyamide, extruded polymers, especially expanded polystyrene (EPS) and / or expanded polypropylene (EPP), and / or a copolymer of polystyrene (PS) and polypropylene (PP).

[0123] In one of the outer shell surfaces 109 of the outer plastic shell 105, facing away from the inner damping layer 103, a plurality of recesses 111 are formed. In the Figure 1 and Figure 2In the illustrated embodiment, the recesses 111 are shaped as openings that completely penetrate the outer plastic shell 105. Alternatively, however, the recesses 111 can also merely comprise indentations in the outer surface 109 of the shell that do not completely penetrate the outer plastic shell 105.

[0124] The helmet body 101 has a plurality of surface elements 113, each of which is detachably received in the recesses 111 and designed to detach from the helmet body 101 upon impact of the bicycle helmet 100 in order to protect the head and neck of the cyclist. As can be seen from the Figure 1 and Figure 2 As can be seen, a surface element 113 is detachably included in each recess 111.

[0125] In the Figure 1 and Figure 2In the respective exploded views shown, the surface elements 113 are depicted both in their inserted state in the helmet body 101 and in their detached state outside the helmet body 101.

[0126] The surface elements 113, which are detachably received in the recesses 111, ensure a compact structure of the helmet body 101 during normal use of the bicycle helmet 100, whereby the surface elements 113 are in particular flush with the outer shell surface 109 of the outer plastic shell 105.

[0127] In the event of a bicycle accident, the bicycle helmet (100) may be subjected to impact, for example, in a collision with an obstacle or the road surface. Such an impact can subject the helmet to strong forces and torques, potentially resulting in injury to the cyclist, particularly to the head and / or neck.

[0128] In the event of a corresponding impact of the bicycle helmet 100, the strong forces and torques that occur can cause strong rotational accelerations of the cyclist's head, which can result in particularly severe injuries in the area of ​​the head and / or neck of the cyclist.

[0129] Upon a corresponding impact of the bicycle helmet 100 according to the invention Figure 1 and 2The detachable connections of the respective surface elements 113, which are detachably held in the recesses 111, are released from the helmet body 101. The corresponding surface elements 113 released from the helmet body 101 absorb at least a portion of the rotational acceleration acting on the bicycle helmet 100 and are ejected from the helmet body 101. This reduces the total amount of the strong rotational acceleration and torque acting on the cyclist's head, thereby preventing injuries to the head and / or neck of the cyclist or at least reducing the extent of such injuries.

[0130] For further details regarding the detachable connection between the surface elements 113 and the helmet body 101, reference is made to the following embodiments.

[0131] Optionally, an adjustable wind deflector 107 can be attached to the bicycle helmet 100, which reduces the air resistance of the bicycle helmet 100. The wind deflector 107 has a protective shield 107-1, which is attached to the helmet body 101 by means of fastening elements 107-2, in particular screws, in receiving recesses 107-3, in particular threads, of the outer plastic shell 105.

[0132] In order to prevent injury to the cyclist's head from the wind deflector 107 in the event of a corresponding impact of the bicycle helmet 100, the fastening elements 107-2, in particular the screws, can each have a predetermined breaking point to ensure that the wind deflector 107 detaches from the helmet body 101 during the impact.

[0133] The following section will discuss in detail the individual recesses 111 and surface elements 113 of the helmet body 101.

[0134] The helmet body 101 has a neck area 115 designed to rest against the cyclist's neck. The helmet body 101 has a first side area 117, in particular a first temple area, designed to rest against the left side of the cyclist's head, in particular the left temple. The helmet body 101 has a second side area 119, in particular a second temple area, designed to rest against the right side of the cyclist's head, in particular the right temple. The helmet body 101 has a top area 121 designed to rest against the top of the cyclist's head.

[0135] The recesses 111 formed in the outer shell 109 of the outer plastic shell 105 are arranged in the neck area 115, in the first side area 117, in the second side area 119 and in the upper area 121 of the helmet body 101.

[0136] The surface elements 113, which are detachably received in the recesses 111, are also arranged accordingly in the neck area 115, in the first side area 117, in the second side area 119 and in the upper area 121 of the helmet body 101.

[0137] Even if this is in the Figure 1 and 2 If not shown, certain surface elements 113 of the neck area 115, the first side area 117, the second side area 119 and / or the upper area 121 of the helmet body 101 may also be missing.

[0138] The in the Figure 1 and 2 The surface elements 113 shown comprise in particular a first neck surface element 113-1, which is detachably received in a neck recess 111-1 arranged in the neck area 115 of the helmet body 101.

[0139] The surface elements 113 include in particular a second back-of-head surface element 113-2, which is detachably received in a back-of-head recess 111-2 arranged between the neck area 115 and the upper area 121 of the helmet body 101.

[0140] The surface elements 113 comprise in particular a first side surface element 113-3, in particular a first temple surface element, which is detachably received in a first side recess 111-3, in particular a first temple recess, arranged in the first side area 117, in particular in the first temple area, of the helmet body 101.

[0141] The surface elements 113 comprise in particular a second side surface element 113-4, in particular a second temple surface element, which is detachably received in a second side recess 111-4, in particular a second temple recess, arranged in the second side area 119, in particular in the second temple area, of the helmet body 101.

[0142] As from the Figure 1 and 2 As can be seen, the first side surface element 113-3 and the second side surface element 113-4 are shaped in a particularly symmetrical way relative to each other.

[0143] The surface elements 113 include in particular a first upper area surface element 113-5, which is detachably received in a first upper area recess 111-5 arranged in the upper area 121 of the helmet body 101.

[0144] The surface elements 113 include in particular a second upper surface element 113-6, which is detachably received in a second upper recess 111-6 arranged in the upper area 121 of the helmet body 101.

[0145] The surface elements 113 include in particular a third upper area surface element 113-7, which is detachably received in a second upper area recess 111-7 arranged in the upper area 121 of the helmet body 101.

[0146] The second upper surface element 113-6 and the third upper surface element 113-7 are shaped symmetrically to each other.

[0147] To ensure effective ventilation of the cyclist's head, at least one surface element 113 of the majority of surface elements 113 has at least one ventilation opening 123.

[0148] From the Figure 1 and Figure 2It can be seen that in particular the first upper surface element 113-5 has a plurality of, in particular four, ventilation openings 123, that in particular the second upper surface element 113-6 has a ventilation opening 123, and that in particular the third upper surface element 113-7 has a ventilation opening 123.

[0149] In order to ensure effective ventilation of the cyclist's head, the outer plastic shell 105 in the upper area 121 of the helmet body 101 has corresponding complementary additional ventilation openings 125, which are arranged in alignment with the corresponding ventilation openings 123 of the surface elements 123 in the upper area 121.

[0150] The corresponding complementary further ventilation openings 125 comprise four sixth further ventilation openings 125-6, each of which is aligned with the respective ventilation opening 123 of the first upper surface element 113-5.

[0151] The corresponding complementary further ventilation openings 125 include a seventh further ventilation opening 125-7, which is aligned with a ventilation opening 123 of the second upper surface element 113-6.

[0152] The corresponding complementary further ventilation openings 125 include an eighth further ventilation opening 125-8, which is aligned with a ventilation opening 123 of the third upper surface element 113-7.

[0153] Furthermore, in the outer plastic shell 105, in particular two first further ventilation openings 125-1 are formed between the first neck surface element 113-1 and the second neck surface element 113-2 in the neck area 115 of the helmet body 101.

[0154] In particular, a second ventilation opening 125-2 is formed in the outer plastic shell 105 between the first neck surface element 113-1 and the first side surface element 113-3 in the neck area 115 of the helmet body 101.

[0155] In particular, a third ventilation opening 125-3 is formed in the outer plastic shell 105 between the first neck surface element 113-1 and the second side surface element 113-4 in the neck area 115 of the helmet body 101.

[0156] In particular, a fourth ventilation opening 125-4 is formed in the outer plastic shell 105 between the first side surface element 113-3 and the second top surface element 113-6 in the first side area 117 of the helmet body 101.

[0157] In particular, a fifth additional ventilation opening 125-5 is formed in the outer plastic shell 105 between the second side surface element 113-4 and the third top surface element 113-7 in the second side area 119 of the helmet body 101.

[0158] Figure 3 shows a schematic sectional view of an area of ​​a bicycle helmet according to a second embodiment of the present invention.

[0159] In the Figure 3The schematic sectional view shown depicts a section through a helmet body 101 of a bicycle helmet 100 in the area of ​​a surface element 113. The helmet body 101 comprises the inner damping layer 103, on which the outer plastic shell 105 is arranged.

[0160] In the outer surface 109 of the outer plastic shell 105, a recess 111 is formed, which specifically penetrates the outer plastic shell 105. A surface element 113 is arranged in the recess 111, which is detachably received in the recess 111 and is designed to detach from the helmet body 101 upon impact of the bicycle helmet 100 in order to protect the head and neck of the cyclist.

[0161] The outer plastic shell 105 has a plurality of, in particular two, undercuts 126 formed, which are connected to the recess 111. The surface element 113, which is detachably received in the recess 111, has projections 127, in particular lips, which are detachably received in the undercuts 126.

[0162] As from the Figure 3 As can be seen, when a pressure impulse is exerted on the surface element 113, the projections 127, in particular lips, can slide out of the undercuts 126 during the release process, especially along a release direction which results from the Figure 3 shown in the drawing plane.

[0163] In particular, the undercuts 126 each have a Figure 3The first contour (not shown) interacts with a second contour of the projection 127 of the surface element 113 received in the respective undercut 126 to ensure that the respective surface element 113 is received in the respective undercut 126. In particular, the interaction between the first and second contours can be broken by a pressure pulse along a predetermined direction to ensure that the respective projection 127 of the surface element 113 is released from the undercut 126.

[0164] As from the Figure 3 As can be seen, the undercuts 126 are formed in particular between the outer plastic shell 105 and a layer surface 103-1 of the inner damping layer 103 facing the surface elements 113. Alternatively, the undercuts 126 can also be formed completely in the outer plastic shell 105 or in the inner damping layer 103.

[0165] Figure 4 shows a schematic sectional view of an area of ​​a bicycle helmet according to a third embodiment of the present invention.

[0166] Just as in the Figure 3 The depicted image also shows that the one in Figure 4 The bicycle helmet 100 shown has cutouts 111 in an outer plastic shell 105 of the helmet body 101, which in particular penetrate the outer plastic shell 105. In contrast to the Figure 3 are in the Figure 4 Two surface elements 113 are shown, which are detachably received in different recesses 111 and are designed to detach from the helmet body 101 in the event of an impact of the bicycle helmet 100 in order to protect the head and neck of the cyclist.

[0167] In this process, projections 127, in particular lips, of the respective surface element 113 engage in an undercut 126, which are formed within the outer plastic shell 105.

[0168] Furthermore, the information in the Figure 4 The outer plastic shell 105 shown has overlapping sections 135, which abut an outside of the respective surface element 113, and under-interlocking sections 136, which abut an inside of the respective surface element 113, and are arranged in particular between the inside of the respective surface element 113 and the upper surface 103-1 of the inner damping layer 103 facing the surface element 113, in order to provide the detachable connection between the respective surface element 113 and the outer plastic shell 105.

[0169] Thus, the effective fastening of the respective surface element 113 to the helmet body 101 is made possible by the double-sided contact of the outer plastic shell 105 with the respective surface element 113 on the outside of the respective surface element 113, and on the inside of the respective surface element 113 with the respective under-engagement sections 136.

[0170] Just as in the Figure 3 can that also be in the Figure 4 The respective surface element 113 shown, when a pressure impulse is exerted on the respective surface element 113, slides out of the respective recess 111, in particular along a release direction which originates from the in Figure 4 shown in the drawing plane.

[0171] Figure 5 shows a schematic sectional view of an area of ​​a bicycle helmet according to a fourth embodiment of the present invention.

[0172] Just as in the Figure 3 and Figure 4 is also in the Figure 5 A recess 111 in an outer plastic shell 105 of the helmet body 101 is shown, which in particular breaks through the outer plastic shell 105. In A surface element 113 is arranged in the recess 111, which is detachably received in the recess 111 and is designed to detach from the helmet body 101 in the event of an impact of the bicycle helmet 100 in order to protect the head and neck of the cyclist.

[0173] The surface element 113, which is detachably received in the recess 111, is detachably connected to the inner damping layer 103 by a connecting element 129. The connecting element 129 is permanently connected to the surface element 113, in particular if the connecting element 129 is formed integrally with the surface element 113, or in particular if the connecting element 129 is materially bonded to the surface element 113.

[0174] As from the Figure 5 As can be seen, the connecting element 129 is arranged on an element underside 131 of the surface element 113 facing the inner damping layer 103 and is detachably connected to a layer topside 103-1 of the inner damping layer 103 facing the surface element 113.

[0175] In the upper layer 103-1 of the inner damping layer 103, an element receptacle 133 is arranged, into which the connecting element 129 detachably engages.

[0176] The in Figure 5 The connecting element 129 shown is in particular designed as a deformable projection element, which is in particular made of an elastomer, such as expanded polypropylene (EPP) or expanded polystyrene (EPS), and which engages detachably in the element receptacle 133, which in particular also consists of an elastomer.

[0177] Even if in the Figure 5Where only a single connecting element 129 is shown, which detachably engages in a single element receptacle 133, the surface element 113 in particular can comprise a plurality of connecting elements 129, each of which detachably engages in element receptacles 133.

[0178] Figure 6 shows a schematic sectional view of an area of ​​a bicycle helmet according to a fifth embodiment of the present invention.

[0179] Just like in the previous one Figure 5 is also in the Figure 6 A connecting element 129 of the surface element 113 is shown, which detachably engages in an element receptacle 133 of the inner damping layer 103.

[0180] The in Figure 6The connecting element 129 shown is designed as a connecting bolt which detachably engages in the element receptacle 133 of the inner damping layer 103. In particular, the connecting element 129, designed as a connecting bolt, has a plurality of barbs 137 which engage behind an inner contour of the element receptacle 133 in order to ensure effective fastening of the connecting element 129.

[0181] The release of the detachable connection between the connecting element 129 and the element receptacle 133 of the inner damping layer 103 can be achieved in particular by a predetermined breaking point of the connecting element 129 designed as a predetermined breaking point, whereby, when a pressure impulse is exerted on the respective surface element 113, the predetermined breaking point breaks and the connecting element 129 detaches from the helmet body 101.

[0182] The release of the detachable connection between the connecting element 129 and the element receptacle 133 of the inner damping layer 103 can, in particular alternatively, also be achieved by a predetermined release point of the connecting element 129 by the fact that the barbs 137 are deformable, in particular formed from an elastomer, so that when a pressure impulse is exerted on the respective surface element 113, the barbs 137 slide out of the element receptacle 133.

[0183] Figure 7 shows a schematic sectional view of an area of ​​a bicycle helmet according to a sixth embodiment of the present invention.

[0184] The in Figure 7 The sixth embodiment shown corresponds to a combination of the features described in Figure 6 fifth embodiment shown and the one in Figure 3 second embodiment shown.

[0185] In the Figure 7In the sixth embodiment shown, the surface element 113 is fixed in the recess 111 both by the engagement of the projections 127 in the undercuts 126 and by the engagement of the connecting element 129, designed as a connecting bolt, in the element receptacle 133 of the inner damping layer 103.

[0186] For further details, please refer to the preceding statements.

[0187] Figure 8 shows a schematic sectional view of an area of ​​a bicycle helmet according to a seventh embodiment of the present invention.

[0188] The one in Figure 8 The seventh embodiment shown corresponds to the one in Figure 7in the sixth embodiment shown, except that the connecting element 129 designed as a connecting bolt engages a recess 139 formed in the element receptacle 133 of the inner damping layer 103 in order to achieve attachment of the surface element 113 to the inner damping layer 103.

[0189] Figure 9 shows a schematic sectional view of an area of ​​a bicycle helmet according to an eighth embodiment of the present invention.

[0190] In the Figure 9 In the eighth embodiment shown, a plurality of first stud elements 141 are arranged on the upper surface 103-1 of the inner damping layer 103, and the connecting elements 129 arranged on the lower surface 131 of the surface elements 113 comprise a plurality of second stud elements 143.

[0191] In this process, the first and second stud elements 141, 143 interlock to provide the detachable connection between the surface element 113 and the inner damping layer 103.

[0192] In particular, the first and second stud elements 141, 143 each have a shaft 145, wherein a head 147, in particular a hemispherical head 147, is arranged at each shaft end of the respective shaft 145, wherein the heads 147 of the first stud elements 141 reciprocally engage behind the heads 147 of the second stud elements 143.

[0193] This could be, in particular, a studded connector from 3M, trade name "3M™ Dual Lock™", consisting of polypropylene strips with mushroom-shaped studs on a short stem. With this connector, a strong but releasable connection is created by pressing the polypropylene strips together.

[0194] Through the mutual interlocking of the heads 147 of the first and second stud elements 141, 143, an effective connection between the surface element 113 and the inner damping layer 103 can be provided in a normal operating state of the bicycle helmet 100. However, if the bicycle helmet 100 is subjected to an impact, the resulting forces acting on the surface element 113 release the connection between the heads 147 of the first and second stud elements 141, 143, and the surface element 113 is thrown away from the helmet body 101 in order to reduce the rotational acceleration and torque acting on the bicycle helmet 100.

[0195] Figure 10 shows a schematic sectional view of an area of ​​a bicycle helmet according to a ninth embodiment of the present invention.

[0196] The one in Figure 10The surface element 113 shown is detachably received in the recess 111 of the outer plastic shell 105. An element receptacle 133 is arranged in the upper surface 103-1 of the inner damping layer 103, into which a connecting element 129, in particular a connecting pin, connected to the surface element 113, is inserted.

[0197] As indicated by the marking in the Figure 10 As shown, the connecting element 129 has a predetermined release point 149, in particular a predetermined breaking point.

[0198] In the event of an impact of the bicycle helmet 100, the forces acting on the bicycle helmet 100 cause the predetermined release point 149 to loosen, in particular a break in the predetermined breaking point, whereby the surface element 113 is separated from the connecting element 129, detaches from the helmet body 101 and is thrown away from the bicycle helmet 100 to protect the head and neck of the cyclist.

[0199] Figure 11shows a schematic sectional view of an area of ​​a bicycle helmet according to a tenth embodiment of the present invention.

[0200] The one in Figure 11 The tenth embodiment shown corresponds to the one in Figure 10 The ninth embodiment shown differs, except that the connecting element 129 is not designed as a connecting pin with a predetermined release point, in particular a predetermined breaking point, but as a connecting screw with a predetermined release point, in particular a predetermined breaking point.

[0201] The in Figure 11 The illustrated connecting screw has a screw shaft 151 which is received into an element receptacle 133 of the inner damping layer 103, and a screw head 153 which is attached to the surface element 113.

[0202] To ensure effective fastening of the screw shaft 151 in the element receptacle 133, the screw shaft 151 has a schematically shown external screw thread 155, which engages in a Figure 11 The screw thread of the element receptacle 133 (not shown) is screwed in to effectively fasten the connecting element 129 in the element receptacle 133.

[0203] In normal operation of the bicycle helmet 100, the surface element 113 with the inner damping layer 103 is thus connected by the in Figure 11 The illustrated screw connection is effectively connected.

[0204] In this case, however, a predetermined breaking point 149 is also arranged between the screw shaft 151 and the screw head 153 of the connecting element 129 designed as a connecting screw.

[0205] In the event of an impact of the bicycle helmet 100, the forces acting on the bicycle helmet 100 cause the predetermined release point 149 to loosen, in particular a break in the predetermined breaking point, whereby the surface element 113 is separated from the connecting element 129, detaches from the helmet body 101 and is thrown away from the bicycle helmet 100 to protect the head and neck of the cyclist.

[0206] Figure 12 shows a schematic sectional view of an area of ​​a bicycle helmet according to an eleventh embodiment of the present invention.

[0207] The one in Figure 12 The eleventh embodiment shown corresponds to the one in Figure 7The sixth embodiment shown differs in that the connecting element 129, designed as a connecting bolt, does not have an end-side locking element, but has deformable locking elements designed as deformable locking webs 157, which are arranged offset from the end of the connecting bolt on the connecting bolt.

[0208] The deformable locking lugs 157 can be deformed inwards when the connecting element 129 is inserted into the element receptacle 133, so that they engage or snap into corresponding locking recesses 159 formed in the element receptacle 133.

[0209] In the event of an impact of the bicycle helmet 100, the forces acting on the helmet body 101 cause a renewed deformation of the deformable locking ribs 157 received in the locking recesses 159, so that the deformable locking ribs 157 slide out of the locking recesses 159, and thereby the connection between the surface element 113 and the inner damping layer 103 is released.

[0210] Thus, the deformable locking webs 157 arranged on the locking element 157, in conjunction with the locking recesses 159 arranged in the element receptacle 113, enable an effective detachable connection between the connecting element 129 and the inner damping layer 103 to be achieved.

[0211] Figure 13 shows a schematic sectional view of an area of ​​a bicycle helmet according to a twelfth embodiment of the present invention.

[0212] The one in Figure 13The twelfth embodiment shown corresponds to the one in Figure 7 in the sixth embodiment shown, except that the connecting element 129 designed as a connecting bolt does not have an end-side locking element, but instead has an expanded locking head 161 at its end, which engages releasably in a correspondingly complementary expanded contour 163 of the element receptacle 133.

[0213] As from the Figure 13 Furthermore, it can be seen that the surface element 113 has a gap 165 which extends through the surface element 113 and also through the connecting element 129 to the inner damping layer 103.

[0214] Figure 14 shows a schematic sectional view of an area of ​​a bicycle helmet according to a thirteenth embodiment of the present invention.

[0215] The one in Figure 14 The thirteenth embodiment shown corresponds to the one in Figure 8 The seventh embodiment shown differs, except that the surface element 113 does not have any projections 127 that engage in undercuts 126 of the inner damping element 103. For further details, please refer to the descriptions on Figure 8 referred.

[0216] Figure 15 shows a schematic sectional view of an area of ​​a bicycle helmet according to a fourteenth embodiment of the present invention.

[0217] In the fourteenth embodiment according to the Figure 15 The figure only schematically shows an undercut 126 in the inner damping layer 103, into which a projection 127 of the surface element 113 engages in order to ensure a detachable fastening of the surface element 113 to the inner damping layer 103.

[0218] Figure 16 shows a schematic sectional view of an area of ​​a bicycle helmet according to a fifteenth embodiment of the present invention.

[0219] The one in Figure 16 The fifteenth embodiment shown corresponds to the one in Figure 15 The fourteenth embodiment shown differs in that two undercuts 126 are formed in a projection 167 of the inner damping layer 103, which extends from the bottom of the recess 111 and is formed in the recess 111. The corresponding projections 127 of the surface element 113 engage in the undercuts 126 from opposite sides in order to detachably fix the surface element 113 to the inner damping layer 111.

[0220] Figure 17 shows a schematic sectional view of an area of ​​a bicycle helmet according to a sixteenth embodiment of the present invention.

[0221] In the Figure 17The outer plastic shell 105, consisting of various segments, and the inner damping layer 103 of the bicycle helmet 100 are shown. Even if this is from the perspective of Figure 17 Not shown, the outer plastic shell 105 is firmly and inseparably connected to the inner damping layer 103.

[0222] In one of the outer shell surfaces 109 of the outer plastic shell 105, facing away from the inner damping layer 103, recesses 111 are formed in which a surface element 113 is detachably received.

[0223] The bicycle helmet 100 further comprises a flexible fabric layer 169, which is arranged between the inner damping layer 103 and the outer plastic shell 105. The flexible fabric layer 169 is not rigidly attached to the inner damping layer 103 and the outer plastic shell 105, but rather rests slidably against them. However, the flexible damping layer 169 can be fastened to the inner damping layer 103 and the outer plastic shell 105 at certain points, preferably on the outer surfaces, for example by screws or rivets.

[0224] As from the Figure 17 As can be seen, the surface elements 113 are solvable, in particular by the in Figure 17 further connecting elements 171 shown, connected to the flexible fabric layer 169.

[0225] Due to the flexible properties of the flexible fabric layer 169, the surface elements 113 attached to the flexible fabric layer 169 by means of the further connecting elements 171 can be moved at least section by section within the recess 111 in order to absorb and compensate for peak forces acting on the surface elements 113.

[0226] If the peak forces acting on the surface elements 113 are so large that one degree of displacement freedom of the flexible fabric layer 169 is no longer sufficient to absorb the peak forces, then the detachable connection between the respective surface element 113 and the flexible fabric layer 169 releases, and the corresponding surface element 113 is ejected from the helmet body to dissipate rotational accelerations from the helmet body 101. The release of the detachable connection between the surface elements 113 and the flexible fabric layer 169 can be achieved, in particular, by breaking a predetermined breaking point in the further connecting elements 171 or by releasing a so-called hook-and-loop fastener.

[0227] Figure 18 shows a schematic sectional view of an area of ​​a bicycle helmet according to a seventeenth embodiment of the present invention.

[0228] In the Figure 18The diagram schematically illustrates only the detachable connection between a surface element 103, which is received in the recess 111 of the outer plastic shell 109, and the flexible fabric layer 169, which is arranged between the outer plastic shell 109 and the inner damping layer 103, by means of a further connecting element 171. For further details, please refer to the descriptions on Figure 17 referred.

[0229] Figure 19 shows a schematic sectional view of an area of ​​a bicycle helmet according to an eighteenth embodiment of the present invention.

[0230] The one in Figure 19 The eighteenth embodiment shown corresponds to the one in Figure 18seventeenth embodiment shown, the only difference being that the outer plastic shell 105 has overlapping sections 173 on the outer side 109 of the shell, which extend over the respective surface element 113 on the outside to prevent the respective surface element 113 from falling out during normal operation of the bicycle helmet 100.

[0231] Should the respective connecting element 171 become detached or break due to a helmet impact and the forces acting on the respective surface element 113, then the surface element 113 can slide out of the recess 111, in particular along a groove extending from the recess 111. Figure 19 The depicted plane of the drawing extends forward or backward in the direction shown. Reference sign

[0232] 100 Bicycle helmet 101 Helmet body 103 Inner cushioning layer 103-1 Top surface of inner cushioning layer 105 Outer plastic shell 107 Wind deflector 107-1 Protective visor 107-2 Fastening element 107-3 Recess 109 Shell exterior 111 Cutout 111-1 Neck cutout 111-2 Back of head cutout 111-3 First side cutout 111-4 Second side cutout 111-5 First upper cutout 111-6 Second upper cutout 111-7 Third upper cutout 113 Surface element 113-1 First neck surface element 113-2 Second back of head surface element 113-3 First side surface element 113-4 Second side surface element 113-5 First upper surface element 113-6 Second upper surface element 113-7 Third upper surface element 115 Neck area 117 First side area 119 Second side area 121 Upper area 123 Ventilation opening 125 Further ventilation opening 125-1 First further ventilation opening 125-2 Second further ventilation opening 125-3 Third furtherVentilation opening 125-4 Fourth further ventilation opening 125-5 Fifth further ventilation opening 125-6 Sixth further ventilation opening 125-7 Seventh further ventilation opening 125-8 Eighth further ventilation opening 126 Undercut 127 Projection 129 Connecting element 131 Element underside 133 Element receptacle 135 Overlap section 136 Underlap section 137 Barb 139 Recess 141 First stud element 143 Second stud element 145 Shank of a stud element 147 Head of a stud element 149 Release point 151 Screw shank 153 Screw head 155 External screw thread 157 Locking ridge 159 Locking recess 161 Locking head 163 Expanded contour of the element receptacle 165 Gap 167 Extension of the inner damping layer 169 Flexible fabric layer 171 Further connecting element 173 Overlap section

Claims

1. A bicycle helmet (100) for a cyclist, comprising: a helmet body (101), wherein the helmet body (101) has an inner damping layer (103), and wherein the helmet body (101) has an outer plastic shell (105) which is connected to the inner damping layer (103), wherein a plurality of recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are formed in a shell outer side (109) of the outer plastic shell (105) facing away from the inner damping layer (103), wherein the helmet body (101) has a plurality of surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) which are each detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) and are designed to detach from the helmet body (101) in the event of an impact of the bicycle helmet (100) in order to protect the head and the neck of the cyclist, characterized in that the helmet body (101) has a neck region (115) which is designed to bear against a neck of the cyclist, wherein the helmet body (101) has a first side region (117) which is designed to bear against a left-hand head side of the cyclist, wherein the helmet body (101) has a second side region (119) which is designed to bear against a right-hand head side of the cyclist, and wherein the helmet body (101) has an upper region (121) which is designed to bear against a head upper side of the cyclist, wherein the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) formed in the shell outer side (109) of the outer plastic shell (105) are arranged in the neck region (115), in the first side region (117), in the second side region (119) and in the upper region (121) of the helmet body (101), and wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) which are each detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are arranged in the neck region (115), in the first side region (117), in the second side region (119) and in the upper region (121) of the helmet body (101).

2. The bicycle helmet (100) according to claim 1, wherein the helmet body (101) has a first temple region which is designed to bear against a left-hand temple of the cyclist, wherein the helmet body (101) has a second temple region which is designed to bear against a right-hand temple of the cyclist, wherein the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) formed in the shell outer side (109) of the outer plastic shell (105) are arranged in the neck region (115), in the first temple region (117), in the second temple region (119) and in the upper region (121) of the helmet body (101), and wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) which are each detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are arranged in the neck region (115), in the first temple region (117), in the second temple region (119) and in the upper region (121) of the helmet body (101).

3. The bicycle helmet (100) according to claim 2, wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a first neck surface element (113-1) which is detachably received in a neck recess (111-1) arranged in the neck region (115) of the helmet body (101), and wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a second occipital surface element (113-2) which is detachably received in a occipital recess (111-2) arranged between the neck region (115) and the upper region (121) of the helmet body (101), and wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a first side surface element (113-3), in particular a first temple surface element, which is detachably received in a first side recess (111-3), in particular first temple recess, arranged in the first side region (117), in particular in the first temple region, of the helmet body (101), and / or wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a second side surface element (113-4), in particular a second temple surface element, which is detachably received in a second side recess (111-4), in particular second temple recess, arranged in the second side region (119), in particular in the second temple region, of the helmet body (101), wherein the first side surface element (113-3) and the second side surface element (113-4) are in particular formed symmetrically to one another, and / or wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a first upper region surface element (113-5) which is detachably received in a first upper region recess (111-5) arranged in the upper region (121) of the helmet body (101), and / or wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a second upper region surface element (113-6) which is detachably received in a second upper region recess (111-6) arranged in the upper region (121) of the helmet body (101), and / or wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a third upper region surface element (113-7) which is detachably received in a third upper region recess (111-7) arranged in the upper region (121) of the helmet body (101), wherein the second upper region surface element (113-6) and the third upper region surface element (113-7) are in particular formed symmetrically to one another.

4. The bicycle helmet (100) according to any one of the preceding claims, wherein at least one surface element (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) of the plurality of surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) has at least one ventilation aperture (123), wherein in particular the first upper region surface element (113-5) has at least one ventilation aperture (123), and / or wherein in particular the second upper region surface element (113-6) has a ventilation aperture (123), and / or wherein in particular the third upper region surface element (113-7) has a ventilation aperture (123).

5. The bicycle helmet (100) according to any one of the preceding claims, wherein the outer plastic shell (105) has a plurality of further ventilation apertures (125, 125-1, 125-2, 125-3, 125-4, 125-5, 125-6, 125-7, 125-8), wherein in particular at least one first further ventilation aperture (125-1) is formed between the first neck surface element (113-1) and the second neck surface element (113-2) in the neck region (115) of the helmet body (101), and / or wherein in particular a second further ventilation aperture (125-2) is formed between the first neck surface element (113-1) and the first side surface element (113-3) in the neck region (115) of the helmet body (101), and / or wherein in particular a third further ventilation aperture (125-3) is formed between the first neck surface element (113-1) and the second side surface element (113-4) in the neck region (115) of the helmet body (101), and / or wherein in particular a fourth further ventilation aperture (125-4) is formed between the first side surface element (113-3) and the second top side surface element (113-6) in the first side region (117) of the helmet body (101), and / or wherein in particular a fifth further ventilation aperture (125-5) is formed between the second side surface element (113-4) and the third top side surface element (113-7) in the second side region (119) of the helmet body (101), and / or wherein in particular at least one sixth further ventilation aperture (125-6) is formed flush with at least one ventilation aperture (123) of the first upper region surface element (113-5), and / or wherein in particular at least one seventh further ventilation aperture (125-7) is formed flush with a ventilation aperture (123) of the second upper region surface element (113-6), and / or wherein in particular at least one eighth further ventilation aperture (125-8) is formed flush with a ventilation aperture (123) of the third upper region surface element (113-7).

6. The bicycle helmet (100) according to any one of the preceding claims, wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) which are each detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are detachably connected to the outer plastic shell (105) and / or to the inner damping layer (103) by connecting elements (129), wherein in particular the connecting elements (129) are non-detachably or detachably connected to the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7).

7. The bicycle helmet (100) according to claim 6, wherein the connecting elements (129) are arranged on an element underside (131) of the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) facing the inner damping layer (103) and are detachably connected to a layer upper side (103-1) of the inner damping layer (103) facing the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7).

8. The bicycle helmet (100) according to claim 7, wherein a plurality of element receptacles (133) are arranged in the layer upper side (103-1) of the inner damping layer (103), in each of which a connecting element (129) detachably engages, wherein the connecting elements (129) comprise in particular deformable projection elements, connecting screws, connecting knobs, connecting pins, and / or connecting bolts which detachably engage in the respective element receptacles (133).

9. The bicycle helmet (100) according to claim 7 or 8, wherein a plurality of first nub elements (141) are arranged on the layer upper side (103-1) of the inner damping layer (103), and wherein the connecting elements (129) arranged on the element underside (131) of the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) comprise a plurality of second nub elements (143), wherein the first and second nub elements (141, 143) mutually engage behind one another in order to provide the detachable connection between the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and the inner damping layer (103).

10. The bicycle helmet (100) according to claim 9, wherein the first and second nub elements (141, 143) each have a shaft (145), wherein a head (147), in particular a hemispherical head (147), is arranged on a respective shaft end of the respective shaft (145), wherein the heads (147) of the first nub elements (141) mutually engage behind the heads (147) of the second nub elements (143).

11. The bicycle helmet (100) according to any one of the preceding claims 6 to 10, wherein the connecting elements (129) each have a predetermined release point (149) which is designed to release the detachable connection between the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and the outer plastic shell (105) and / or the inner damping layer (103), wherein the respective predetermined release point (149) is in particular designed to release the detachable connection between the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and the outer plastic shell (105) and / or the inner damping layer (103) when a pressure impulse is exerted on the respective surface element (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7).

12. The bicycle helmet (100) according to any one of the preceding claims, wherein a plurality of undercuts (126) are formed in the outer plastic shell (105) and / or in the damping layer (111), which undercuts are connected to the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7), wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) which are each detachably received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) have projections (127), in particular lips, which are detachably received in the undercuts (126).

13. The bicycle helmet (100) according to claim 12, wherein the undercuts (126) are formed between the outer plastic shell (105) and a layer upper side (103-1) of the inner damping layer (103) facing the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7).

14. The bicycle helmet (100) according to any one of the preceding claims, wherein the bicycle helmet (100) has a flexible fabric layer (169) which is arranged between the inner damping layer (103) and the outer plastic shell (105), wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) received in the recesses (111, 111-1, 111-2, 111-3, 111-4, 111-5, 111-6, 111-7) are detachably fastened to the flexible fabric layer (169) and are designed to detach from the helmet body (101) in the event of an impact of the bicycle helmet (100) in order to protect the head and the neck of the cyclist.

15. The bicycle helmet (100) according to any one of the preceding claims, wherein the outer plastic shell (109) has overlapping portions (135) which bear against an outer side of the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and / or undergripping portions (136) which bear against an inner side of the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7), wherein the undergripping portions (136) are arranged in particular between the inner side of the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and a layer upper side (103-1) of the inner damping layer (103) facing the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) in order to provide the detachable connection between the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) and the outer plastic shell (105).

16. The bicycle helmet (100) according to any one of the preceding claims, wherein the outer plastic shell (105) is formed from carbon-fibre-reinforced plastic (CFRP), acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polyoxymethylene (POM), polypropylene (PP), and / or polystyrene (PS), and / or wherein the surface elements (113, 113-1, 113-2, 113-3, 113-4, 113-5, 113-6, 113-7) are formed from carbon-fibre-reinforced plastic (CFRP), acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polyoxymethylene (POM), polypropylene (PP), and / or polystyrene (PS), and / or wherein the inner damping layer (103) is formed from polystyrene (PS), polyester (PE), polypropylene (PP) and / or polyvinyl chloride (PVC), additively manufactured polyamide, extruded polymers, in particular expanded polystyrene (EPS) and / or expanded polypropylene (EPP), and / or from a copolymer of polystyrene (PS) and polypropylene (PP).

Images