LINER

Abstract

A liner for insertion into a concavely curved inside of an associated protective helmet, in particular a bicycle helmet, which extends along a longitudinal direction from a front side to a rear side, comprises at least two anchoring points for anchoring the liner to the protective helmet. The liner is also configured to be put under a shear stress along the inside of the protective helmet by the anchoring and to thereby assume a predetermined curved contour.

Claims

1. A liner for insertion into a concavely curved inside of an associated protective helmet, which extends along a longitudinal direction from a front side to a rear side, the liner comprising at least two anchoring points for anchoring the liner to the protective helmet, wherein the liner is configured to be put under a shear stress along the inside of the protective helmet by the anchoring and thereby assume a predetermined curved contour.

2. The liner according to claim 1, wherein the at least two anchoring points are spaced from each other along a transverse direction running perpendicular to the longitudinal direction.

3. The liner according to claim 1, wherein the liner has a substantially planar base shape and is configured to be tensioned by the anchoring into a curved helmet shape.

4. A protective helmet which extends from a front side to a rear side along a longitudinal direction and has a concavely curved inside, comprising a liner according to claim 1.

5. The protective helmet according to claim 4, wherein the liner is configured to slide between the at least two anchoring points along the inside of the protective helmet when a tangential force component is applied.

6. The protective helmet according to claim 4, further comprising at least two anchoring means for releasably anchoring the liner.

7. The protective helmet according to claim 4, wherein the liner can be releasably mounted to the protective helmet, wherein the protective helmet comprises a single liner which can be releasably mounted.

8. The liner for insertion into a concavely curved inside of an associated protective helmet which extends along a longitudinal direction from a front side to a rear side, the liner comprising at least two anchoring points for anchoring the liner to the protective helmet, wherein the liner is configured to be put under a shear stress along the inside of the protective helmet by the anchoring and thereby assume a predetermined curved contour, and wherein the liner comprises at least one bridge section which is configured to be urged into a bridge shape by the shear stress, in order to engage in an associated ventilation channel of the protective helmet.

9. The liner according to claim 8, wherein the bridge shape represents a bulge that is directed radially outwards with respect to the predetermined curved contour of the liner

10. The liner according to claim 8, wherein the liner comprises at least two folds which confine the bridge section and predetermine a respective fold line, in order to form the bridge shape.

11. The liner according claim 8, wherein the liner comprises at least two bridge sections, wherein each of the at least two anchoring points is arranged at one of the at least two bridge sections.

12. The liner according to claim 11, wherein each of the at least two anchoring points is arranged at a respective bulge section of the at least two bridge sections, wherein the bulge sections of the at least two bridge sections are destined to abut a channel base of the associated ventilation channel of the protective helmet.

13. The liner according to claim 8, wherein the at least one bridge section comprises a tongue at which the anchoring point is arranged.

14. The liner according to claim 8, wherein the liner comprises at least one bridge section between the at least two anchoring points at which no anchoring point is arranged.

15. The liner according to claim 8, wherein the at least one bridge section is configured between two support sections of the liner which extend substantially along the longitudinal direction in the anchored state, and wherein the at least one bridge section connects the support sections in a bridge-like manner.

16. The liner according to claim 8, wherein the at least one bridge section is connected to the support sections of the liner by outer folds.

17. The liner according to claim 16, wherein the at least one bridge section comprises at least one inner fold between the outer folds.

18. The liner according to claim 8, wherein the liner has a length between the at least two anchoring points including the at least one bridge section which is greaterby at least 10% or by at least 20%than the length of the predetermined curved contour between the at least two anchoring points, without taking into account the at least one bridge section.

19. The liner according to claim 8, wherein the at least one bridge section is configured to be elastic with respect to at least one of force components oriented transversely to the longitudinal direction or force components oriented tangential along the inside of the protective helmet.

20. The liner according to claim 8, wherein the at least one bridge section is configured to engageat least in sectionsin an accordion-shaped manner in the associated ventilation channel; or wherein the at least one bridge section is configured to engageat least in sectionsin a curved manner in the associated ventilation channel; or wherein the at least one bridge section is configured to engage triangular in cross-section in the associated ventilation channel; or wherein the at least one bridge section is configured to at least substantially replicate a cross-sectional shape of the associated ventilation channel in the anchored state of the liner; or wherein the at least one bridge section has at least one buckling which, in the anchored state, is configured to form a buckled corner at an edge of the associated ventilation channel facing a head of a wearer of the protective helmet.

Description

DRAWINGS

[0093] The invention will be explained below by way of purely exemplary embodiments with reference to the drawings.

[0094] FIGS. 1A to 1C show a protective helmet and a liner for insertion into the protective helmet in a planar base shape and in a predetermined curved contour, into which protective helmet the liner is transferable by anchoring the liner to an inside of the protective helmet.

[0095] FIGS. 2A and 2B show a perspective front view and rear view of the liner in the base shape and in the predetermined curved contour.

[0096] FIGS. 3A and 3B show a cross-sectional view of the protective helmet with the inserted liner and an inner view of the protective helmet with the inserted liner.

[0097] FIGS. 4A and 4B show a cross-sectional view and a perspective view of a curved bridge section of the liner with the liner inserted into the protective helmet, wherein the bridge section is urged into an associated ventilation channel of the protective helmet.

[0098] FIGS. 5A and 5B show a cross-sectional view and a perspective view of a partial accordion-shaped bridge section of the liner with the liner inserted into the protective helmet, wherein the bridge section is urged into an associated ventilation channel of the protective helmet.

[0099] FIGS. 6A and 6B show a cross-sectional view and a perspective view of a triangular-shaped bridge section of the liner with the liner inserted into the protective helmet, wherein the bridge section is urged into an associated ventilation channel of the protective helmet.

[0100] FIGS. 7A and 7B show a cross-sectional view and a perspective view of a bridge section of the liner replicating a ventilation channel of the protective helmet, with the liner inserted into the protective helmet.

[0101] FIGS. 8A and 8B show a cross-sectional view and a perspective view of a bridge section of the liner with the liner inserted into the protective helmet, wherein the bridge section replicates a cross-sectional shape of a ventilation channel and has a buckling forming a buckled corner at an edge of the ventilation channel.

[0102] FIG. 9 shows a perspective view of a bridge section of the liner with the liner inserted into the protective helmet, wherein the bridge section has a tongue for anchoring the liner to the protective helmet.

[0103] FIG. 10 shows a perspective view of a bridge section of the liner which has a fold length at an edge of a ventilation channel that is shorter than a bridge section length.

DETAILED DESCRIPTION OF THE INVENTION

[0104] FIG. 1A shows a protective helmet 13 which extends along a longitudinal direction L from a front side V to a rear side R and may be used in particular as a bicycle helmet. The protective helmet 13 has a curved and substantially spherical segmented helmet shape 23 and is intended to protect the head of a wearer from the forces occurring in the event of an impact. For this purpose, the protective helmet 13 has in particular a helmet body 63 which may be made of EPS (expanded polystyrene), for example, and which is configured to absorb kinetic energy by elastic and/or inelastic deformation and thereby shield the head of a wearer. In addition, the protective helmet 13 has an outer shell 65 which is firmly connected to the helmet body 63 at an outside 16 of the protective helmet 13 facing away from the head of a wearer (see also FIG. 3A). The outer shell 65 may in particular be made of polycarbonate and may be intended to distribute forces acting on the protective helmet 13 and to protect the helmet body 63, for example, from damage due to scratching.

[0105] FIGS. 1B to 2B further show a liner 11 which is configured to be inserted into the protective helmet 13 at a concavely curved inside 15 thereof, wherein the inside 15 of the protective helmet 13 faces the head of a wearer, not shown (see also FIGS. 3A and 3B). The liner 11 has a substantially planar base shape 21 as shown in FIG. 1B, so that the liner 11 may extend substantially in a plane when the liner 11 is not inserted into the protective helmet 13. Furthermore, two anchoring points 17 are provided on the liner 11 by which the liner 11 may be anchored to the inside 15 of the protective helmet 13. In the embodiments shown, the anchoring points 17 are configured as anchoring openings, so that the liner 11 may be mounted to the protective helmet 13, in particular, by way of two anchoring means 57 which can be passed through the anchoring points 17, for example by means of two screws (cf. also FIGS. 2A, 2B and 3A). In particular, the protective helmet 13 may have anchoring recesses (not shown) corresponding with the anchoring points 17 in which the anchoring means 57 can engage.

[0106] As can be seen in particular from FIGS. 1C, 2A and 2B, the liner 11 is configured to be put under a shear stress S along the inside 15 by the anchoring, in order to assume a predetermined curved contour 19 due to the shear stress S. Therefore, the liner 11 may be transferred from the planar base shape 21 to the predetermined curved contour 19, which substantially corresponds to the spherical segmented helmet shape 23, by the anchoring at the anchoring points 17, so that the liner 11 may be inserted into the protective helmet 13 along the inside 15.

[0107] In order to be able to generate the shear stress S, the anchoring points 17 are spaced from each other with respect to a transverse direction Q oriented perpendicular to the longitudinal direction L of the protective helmet 13, so that the liner 11 may be subjected to a compressive force by being anchored between the anchoring points 17, as a result of which, the liner 11 is urged into the curved contour 19. In addition, the distance between the anchoring points 17 along the transverse direction Q in the base shape 21 may in particular be greater than in the anchored state of the liner 11 when the liner 11 assumes the predetermined curved contour 19. Further, the liner 11 may have rigidity but be configured to be elastically flexible so that the liner 11 may be tensioned, to some extent, towards the planar base shape 21. As a result, sections of the liner 11 which are not located between the anchoring points 17 may also be urged radially outwards with respect to the spherical segmented helmet shape 23 when the liner 11 is anchored in the protective helmet 13, so that the liner 11 as a whole may be tensioned in the protective helmet 13 along the inside 15 thereof.

[0108] In addition to the anchoring points 17, which serve to place the liner 11 under a shear stress S by anchoring it to the protective helmet 13 and to transfer the liner 11 into the predetermined curved contour 19, two mounting points 59 are provided at a front surface 61 of the liner 11, by means of which the liner 11 may be fixed to the front side V of the protective helmet 13. However, unlike the anchoring points 17, the mounting points 59 do not serve to place the front surface 61 under shear stress, but simply to fix the liner 11 in a correct position in the protective helmet 13. Rather, the shear stress S required to transfer the liner 11 into the curved contour 19 may be achieved by anchoring the liner 11 at the anchoring points 17.

[0109] In particular, the liner 11 may be configured as or include a padding against which the head of a wearer of the protective helmet 13 may rest when the liner 11 is inserted. Such a padding may in particular increase the wearing comfort of the protective helmet 13, but may also serve to absorb forces in the event of an impact by elastic deformation or by compression in order to shield the head of the wearer. In addition, a liner 11 configured as a padding or comprising a padding may serve to transport moisture, in particular to be able to transport sweat to the outside during a sporting activity, for example during cycling. For this purpose, the liner 11 may in particular have micro-perforation.

[0110] Due to the arrangement of the liner 11 along the inside 15 of the protective helmet 13, the liner 11 may also be referred to as an inner shell or as a lining. The protective helmet 13 may further comprise, in particular, a chin strap and/or a neck strap, which are not shown, in order to enable the protective helmet 13 to be adapted to the head of a wearer and to enable the protective helmet 13 to be worn safely.

[0111] The liner 11 further comprises, as shown in particular in FIGS. 1B to 3B, a plurality of support sections 41 extending substantially along the longitudinal direction L, which are connected to each other by respective bridge sections 25 or 26. In addition, a plurality of recesses 71 are provided on the liner 11, which are partially circumferentially closed by the support sections 41, the bridge sections 25 and 26, and the front surface 61, but are partially open radially outwards. In particular, the configuration of the liner 11 with recesses 71 makes it possible to be able to bring the liner 11 into the substantially spherical segmented helmet shape 23 or into the predetermined curved contour 19 by anchoring it, without thereby creating a material overlap.

[0112] While the support sections 41 may substantially form a contact surface for a head of the wearer of the protective helmet 13 and, for example, form a padding, the bridge sections 25 and 26 serve in particular to connect the support sections 41 in a bridge-like manner to one another in the base shape 21 of the liner 11 and to thereby stabilize the liner 11. Furthermore, in the embodiment shown, the anchoring points 17 are provided at two outer bridge sections 25 with respect to the transverse direction Q, so that the liner 11 may be anchored to the protective helmet 13 at the outer bridge sections 25. The inner bridge sections 26, on the other hand, do not have an anchoring point 17 and are therefore mounted in a floating manner in the inserted state, as will be explained in more detail below.

[0113] As can be further seen in particular from FIGS. 1B to 2B, the bridge sections 25 and 26 are connected to the adjacent support sections 41 by two respective outer folds 31. The outer folds 31 form a respective fold line 33 along which the bridge sections 25 and 27 bend radially outwards with respect to the spherical segmented shaped helmet 23 as a result of the anchoring and due to the shear stress S when the liner 11 is transferred into the predetermined curved contour 19. Therefore, the bridge sections 25 and 26 may be urged into a bridge shape 27 by the shear stress S and thus into the anchored state of the liner 11, as can be seen in particular from FIG. 3A, in order to engage in a respective ventilation channel 29 formed on the protective helmet 13.

[0114] In this respect, the bridge sections 25 and 26 make it possible for the ventilation channels 29 not to be covered by the liner 11 when the liner 11 is inserted, but rather air flowing through the ventilation channels 29 along the head of a wearer may also flow along the head in the region of the bridge sections 25 and 26. For this purpose, the anchoring points 17 are configured at a respective bulge section 35 of the bridge section 25, so that the liner 11 may be anchored to channel bases 37 of the respective ventilation channels 29 associated with the bridge sections 25.

[0115] Furthermore, FIG. 3A shows in particular that the bridge sections 25 and 26 substantially replicate the cross-sectional shape of the respective associated ventilation channels 29, so that the bridge shape 27 of the bridge sections 25 and 26 in this embodiment of the liner 11 represents a replica 51 of the cross-sectional shape of the ventilation channels 29. Thus, in the inserted or anchored state of the liner 11, the bridge sections 25 and 26 extend along channel walls 38 and along channel bases 37 of the ventilation channels 29 and fit within the ventilation channels 29, wherein the outer folds 31 substantially abut edges 55 of the ventilation channels 29. To achieve this bridge shape 27, respective inner folds 43 located between the outer folds 31 are provided on the bridge sections 25 and 26, which in turn define fold lines along which the bridge sections 25 and 26 bend due to the anchoring of the liner 11 as a result of the generated shear stress S, in order to separate sections of the bridge sections 25 and 26 which extend along the channel walls 38 from sections of the bridge sections 25 and 26 which extend along the channel bases 37.

[0116] While, due to the replication of the cross-sectional shape of the ventilation channels 29 an airflow flowing through the ventilation channels 29 may thus remain substantially unaffected by the insertion of the liner 11, it is further achieved by the replication 51 of the cross-sectional shape of the ventilation channels 29 that the liner 11 in its base shape 21 between the two anchoring points 17 including the bridge sections 25 and 26 has a length which is greater, in particular by at least 10% greater or by at least 20% greater, than the length of the predetermined curved contour 19 without taking into account the bridge sections 25 and 26. Furthermore, the length of the bridge sections 25 from the anchoring points 17 to the outermost folds 31 is greater than a direct straight line connection between the anchoring points 17 at the center of the channel bases 37 and the outer edges 55 of the associated ventilation channels 29. In this respect, the bridge sections 25, as compared to such a straight-line connection, to some extent, urge an excess of material of the liner 11 into the ventilation channels 29.

[0117] This excess material or the greater length of the liner 11 in the base shape 21 compared to the length of the curved contour 19 without taking into account the bridge sections 25 and 26, allows the anchored liner 11 to be movable relative to the inside 15 of the protective helmet 13 between the anchoring points and, in particular, to slide along the inside 15. For example, such relative movement of the liner 11 with respect to the inside 15 may be achieved in that the anchored bridge sections 25 may unfold and partially move out of the respective ventilation channel 29 as a result of a force effect in a tangential direction with respect to the curved shape of the inside 15, so that the liner 11 moves relative to the helmet body 63. The bridge sections 26 mounted in a floating manner at which no anchoring point 17 is provided, may also be moved out of the respective ventilation channel 29 as a result of such force effects to allow the liner 11 to slide.

[0118] In particular, such a relative movability of the liner 11 with respect to the helmet body 63 may serve to absorb or redirect tangential force components acting on the protective helmet 13 during an impact and thereby prevent a direct transmission of such forces to a head of the wearer. To assist such sliding, the liner 11 may further be configured to be friction-reduced, in particular smooth, on a surface facing the helmet body 63, whereas a padding, for example, may be provided on a surface facing the head of the wearer. The inside 15 of the protective helmet 13 may also be configured, for example, with reduced friction and in particular smooth, or have friction-reducing elements in order to facilitate a sliding of the liner 11 along the inside 15.

[0119] Thus, while sliding of the liner 11 relative to the helmet body 63 may be provided for absorbing tangential and/or rotational force components, the anchoring means 57 may be configured in particular to hold the liner 11 at the inside 15 of the protective helmet 13 in the event of forces to be expected in the event of an impact, in particular expected tangential force components. Thus, provision may be made to prevent or minimize transmission of tangential or rotational forces to a head of a wearer by a sliding the liner 11 relative to the helmet body 63, however, not by tearing out the anchoring means 57 and a complete detaching of the liner 11.

[0120] Further, the folds 31 or at least one of the folds 31 may include a perforation or groove in order to absorb or reduce tangential or rotational force components by a tearing or tearing off in the event of an impact. Also, such tearing of the folds 31, which are arranged as fold lines 33 at the edges 55 of the respective ventilation channels 29, may allow the liner 11 to slide along the inside 15 of the protective helmet 13 in order to absorb said force components. In addition, the portion of the force required to tear the folds 31 may be directly absorbed by the tearing of the folds 31, so that an effect of this force on the head of a wearer may be prevented.

[0121] FIGS. 4A to 10 illustrate further embodiments of the liner 11, in which various bridge shapes 27 of the bridge sections 25 or 26 are provided, wherein always as an example, only one bridge section 25 in the anchored state of the liner 11 is shown. For illustration purposes, a section of a head 67 of a wearer of the protective helmet 13 is moreover schematically indicated, which may in particular rest against the support sections 41 of the liner 11. Moreover, in FIGS. 4A to 10, a circular ventilation cross-section 69 is drawn, which marks a space to be kept free for completely undisturbed ventilation in the respective ventilation channel 29.

[0122] In FIGS. 4A and 4B, no inner fold 43 is provided on the bridge section 25 shown, and the bridge section 25 is configured to engage with the ventilation channel 29 in a curved or arched manner. Further, no anchoring point 17 is provided on the bridge section 25 and the bridge section 25 does not extend to the channel base 37 of the ventilation channel 29, so that no anchoring may take place at this bridge section 25. Nevertheless, the design of the bridge shape 27 as a curved shape 47 allows an excess of material to be provided so that, in the event of an impact, the bridge section 25 may be tensioned for example in the transverse direction Q, in order to allow the liner 11 to slide relative to the helmet body 63 and to absorb rotational or tangential force components.

[0123] FIGS. 5A and 5B illustrate an embodiment in which the bridge shape 27 forms an accordion shape 45 and in which the bridge section 25 extends in an accordion shape along the channel walls 38 of the ventilation channel 29. Moreover, the bridge section 25 is guided along the channel base 37 so that, in general, an anchoring may be provided at the channel base and an anchoring point 17 may be provided at the bulge section 35 of the bridge section 25 (cf. FIG. 5B). Furthermore, the ventilation cross-section 69 of the ventilation channel 29 is kept almost completely free, so that a substantially unchanged airflow through the ventilation channel 29 may be achieved.

[0124] In particular, this accordion shape 45 is achieved by a plurality of inner folds 43 which define respective fold lines along which the bridge section 25 is folded within the ventilation channel 29 as a result of the shear stress S. The accordion shape 42 may influence the possible sliding of the liner 11 in the event of an impact, and may allow for more relative movements of the liner 11 with respect to the helmet body 63 compared to a simple replica 51 of the cross-sectional shape of the ventilation channel 29, in that the accordion shape 45 may unfold as a result of tangential or rotational forces being transmitted to the liner 11 so that these forces may be absorbed by the unfolding and the sliding of the liner 11, and a direct transmission to the head 67 of the wearer may be prevented. In particular, this is also possible when the bridge section 25 is anchored to the channel base 37. In addition, the thickness of the inner folds 43, for example, may influence which forces of which strength are required in order to unfold the bridge section 25 and to move the liner 11 relative to the inside 15 of the protective helmet 13.

[0125] In FIGS. 6A and 6B, an embodiment is shown in which the bridge shape 27 corresponds to a triangular shape 49, for which an inner fold 43 is provided at the tip of the triangular shape 49. Furthermore, it is illustrated in FIG. 6B that in particular an anchoring point 17 may be provided at this inner fold 43 in order to be able to anchor the bridge section 25 at the channel base 37 of the ventilation channel 29. In this case, however, the distance between the anchoring point 17 and the outer folds 31 corresponds to the length of a linear connection between a center of the channel base 37, at which the anchoring takes place, and an edge 55 of the ventilation channel 29, so that the bridge section 25 may not unfold and move out of the ventilation channel 29 in the event of an impact. However, in particular floating bridge sections 26 mounted in a floating manner and located between the anchoring points 17 may still allow the liner 11 to slide relative to the helmet body 63 (see, e.g., FIGS. 1B to 3B). In addition, the bridge sections 25 and in particular the triangular shaped bridge sections 25 may, where applicable, be made of an elastic material so that the triangular shaped and anchored bridge section 25 may also be deformable as a result of tensile forces and may allow the liner 11 to slide.

[0126] FIGS. 7A and 7B illustrate a configuration of a bridge section 25 ultimately consistent with the embodiment of FIGS. 1B to 3B, in which the bridge shape 27 represents a replica 51 of the cross-sectional shape of the respective ventilation channel 29. In this embodiment, the bridge section 25 is guided along the channel walls 38 and the channel base 35 so that the liner 11 may be anchored, for example, at the bulge section 37 of the bridge section 25. In addition, the ventilation cross-section 69 remains virtually unaffected, so that an airflow running along the head 67 through the ventilation channel 29 may at the most be marginally changed by the bridge section 25.

[0127] FIGS. 8A and 8B show a further development of the bridge section 25, the bridge shape 27 of which forms a replica 51 of the cross-sectional shape of the respective ventilation channel 29. This bridge section 25 has two bucklings 53, which in the bridge shape 27 of the bridge section 25 form a respective buckled corner 54 at the edges 55 of the ventilation channel 29. To some extent, these buckled corners 54 represent a further excess of material through which rotation of the adjacent support sections 41 relative to the bridge section 25 may be achieved. In this respect, further absorption of rotational and/or tangential forces by the liner 11 and prevention of direct transmission of these forces to the head 67 of the wearer may be achieved by the bucklings 53 and/or the buckled corners 54.

[0128] In FIG. 9, an embodiment of the bridge section 25 is shown in which the bridge shape 27 is again a replica 51 of the cross-sectional shape of the ventilation channel 29. However, a tongue 39 is configured at the bulge section 35 of the bridge section 25 which extends substantially along the longitudinal direction L and on which the anchoring point 17 is configured. By the fact that the liner 11 may be anchored to such a tongue 39, and thus to a narrower section of the bridge section 25 with respect to the transverse direction Q, rotation of the liner 11 about the anchoring point 17 relative to the helmet body 63 may be enabled in order to be able to absorb rotational or tangential forces.

[0129] In the embodiment shown in FIG. 10, a fold length C of the outer folds 31 is reduced compared to a bridge section length B which the bridge section 25 has along the longitudinal direction L, and in particular, corresponds to half the bridge section length B. Also because of this, it may be achieved that in particular the adjacent support sections 41 may be rotated relative to the bridge section 25 in order to be able to absorb rotational or tangential forces, in particular also when the bridge section 25 is anchored to the anchoring point 17, and to be able to prevent a transmission to the head of the wearer 67.

[0130] Since, generally, different bridge shapes 27 of the bridge sections 25 and 26 are thus possible, the bridge shapes 27 of the bridge sections 25 and 26 may correspond, for example, to the embodiment illustrated with reference to FIGS. 1B to 3B, whereby, however, different bridge shapes 27 may also be provided for different bridge sections 25 or 26 or for different ventilation channels 29. In particular, bridge sections 25 and 26 having different bridge shapes 27 may be specifically used to modify an airflow flowing through a respective ventilation channel 29, or to determine the ability of the liner 11 to slide relative to the helmet body 63 section by section. Moreover, in embodiments of the liner 11 having bends 53 or tongues 39, all of the bridge sections 25 and 26 may have such bends 53 and/or tongues 39, or said elements may be configured in only some of the bridge sections 25 and/or 26.

[0131] By the fact that the base shape 21 of the liner 11 is configured planar, in particular the liner 11 may be manufactured in a simplified manner, since the predetermined contour 19 or the spherical segmented helmet shape 23 does not have to be reproduced in the course of manufacture. Rather, this may take place automatically as a result of inserting the liner 11 into the protective helmet 13. By the fact that in the embodiment shown only two anchoring points 17 are provided via which the shear stress S is generated, the insertion and/or replacement of the liner 11 may be carried out simply and without a great deal of time. Generally, however, more than two anchoring points 17 may also be provided.