Helmet with a ring for connecting the helmet to an anti-theft system

Description

BACKGROUND OF THE INVENTION

[0001] The present invention relates to the field of helmets.

[0002] A helmet is generally worn by a user to cover part of their head and limit the risk of trauma to that user in the event of a fall / impact to their head.

[0003] Between two uses of the helmet, the user must remove it and there is then a risk of theft especially if this helmet is attached to the vehicle (such as a bicycle, a scooter, a motorcycle, a quad).

[0004] To prevent theft, the user can pass a link from an anti-theft system external to the helmet through a helmet strap or possibly around a fixed chin strap formed from a portion of the helmet's hard shell. An anti-theft system link can be a cable or a U-lock.

[0005] In the event of an attempted theft, there is a risk that the straps will be cut / damaged and the chin strap will be damaged by forces transmitted via the anti-theft system link.

[0006] Several helmets equipped with prior art attachment devices are for example disclosed by documents FR2377777A2, FR2511581 and US5117662A. SUBJECT OF THE INVENTION

[0007] An object of the present invention is to provide a helmet solving all or part of the aforementioned problems of the prior art. SUMMARY OF THE INVENTION

[0008] To this end, the invention essentially relates to a helmet comprising a hard shell and a soft shell extending inside the hard shell, this helmet comprising an attachment device to allow the attachment of an external anti-theft system to the helmet.

[0009] The helmet according to the invention is described in independent claim 1.

[0010] For the understanding of the invention, the term hard shell is a relative term with respect to the hardness of the soft shell (in other words, the hard shell has a harderness greater than the harderness of the soft shell).

[0011] The link of the anti-theft system can be an anti-theft system cable external to the helmet or an anti-theft system chain or an anti-theft system U external to the helmet, an open ring of padlock forming an anti-theft system.

[0012] Having a ring mechanically connected to the hard shell makes it easier to attach the helmet using an anti-theft system whose link can penetrate the ring in the extended position.

[0013] The attachment area of ​​the anti-theft system is thus located at the level of the ring which constitutes a direct grip on the helmet dedicated to this attachment.

[0014] This makes securing the helmet using an anti-theft system easier while limiting the risk of damaging the helmet when securing it.

[0015] The anti-theft system may connect the helmet to a support such as a fixed support or a part of the vehicle, for example a wheel of the vehicle, a handlebar of the vehicle, a chassis of the vehicle, a fixed attachment belonging to the vehicle and accessible from outside the vehicle or a fixed attachment belonging to the vehicle and accessible inside a trunk of the vehicle, this trunk being adapted to receive the helmet in the trunk.

[0016] Ideally, the helmet ring has a passage for the anti-theft system link which allows a cylindrical rod with a diameter greater than 2 mm to pass through the ring, this rod preferably having a diameter greater than 10 mm.

[0017] Ideally, this passage of the ring allows the passage of a cylindrical rod with a diameter of less than 50 mm.

[0018] Another advantage of the helmet according to the invention is that the ring can be positioned in the stowed position when it is no longer used for passing the link of the anti-theft system.

[0019] According to another aspect, the invention relates to a helmet comprising an electronic device chosen from the group of electronic devices consisting of: of an electronic anti-theft alarm device comprising a sound transmitter and / or a transmitter of an alarm message via a wireless communication network; of an electronic device for geolocating the helmet; of a shock detection device applied to the casing; of a device for detecting breakage of the ring (for example by detecting a break in electrical continuity along the ring); of a device for detecting tearing forces applied to the casing; of an electronic device for detecting at least one current position of the ring relative to the hard shell, this electronic device for detecting at least one current position of the ring being arranged to emit a signal representative of this current position via a communication channel, this message being intended for another electronic device to control the execution or stopping of a functionality implemented by this other electronic device; and any combination of these electronic devices.

[0020] Such a helmet is particularly useful because it provides mechanical protection of the helmet against theft while providing a means of detecting the state of the helmet (by state, one can mean its position and / or the position of the ring relative to the hard shell and / or a mechanical stress applied to a location of the helmet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other characteristics and advantages of the invention will emerge clearly from the description given below, for information purposes only and in no way limiting, with reference to the appended drawings, in which: there figure 1 comprises two views of a helmet according to the invention, the ring of which is arranged at a rear area at the bottom of the helmet, the ring being in the stowed position in the left view and in the extended position in the right view, the anti-theft system link is here a cable; the figure 2presents on the one hand two views of a first helmet according to the invention comprising a cavity / alcove formed at the rear of the helmet and in which the ring is located, a tilting hatch closing this alcove, this hatch being opened by manual pressure on a manual actuation zone of the hatch or the ring, this actuation zone here being a button located at the rear of the helmet; and on the other hand a third view of a second helmet according to the invention also provided with an alcove where the ring is fully stored in the stored position, here a hatch closing the alcove is manually tilting towards the bottom of the helmet (here it is a question of actuating the hatch directly by hand to be able to reach the ring); the figure 3presents on the one hand a first view of an assembly comprising a motorcycle, an anti-theft system attached to the handlebars of the motorcycle and a helmet according to the invention whose ring is in the extended position, a link of the anti-theft system passing through this ring, a cover extending all around the helmet to protect it, only the ring being outside the cover and on the other hand a helmet according to the invention attached to a scooter structure via an anti-theft system; the figure 4 illustrates on the one hand a sectional view of a helmet according to the invention worn by a user, the ring being integrated into a housing, to be movable there between a stowed position illustrated here and an extended position and on the other hand a rear view of the helmet illustrated in the sectional view, the housing being illustrated in transparency with the ring in the stowed position and a gray illustration of the ring in the extended position; the Figure 5illustrates a first sectional view of a helmet not covered by the invention, by a user, the cavity receiving the ring being placed at the rear of the helmet, this cavity forming an alcove selectively closed by a sliding hatch a second front view of this sliding hatch outside the hard shell of the helmet between a high position for closing the alcove and a low position to allow the passage of the ring out of the alcove, the third view of this Figure 5 illustrating the alcove 31 open, the hatch 32 and the ring 15 in the extended position, this ring 15 is here attached to a base 17 inserted in the alcove and attached to the outside of the hard shell 11; the figure 6illustrates two views of the helmet according to the invention in a mode where the cavity receiving the ring is placed at the rear of the helmet, this cavity forming an alcove selectively closed by a sliding hatch which is here sliding inside the hard shell of the helmet between a low position for closing the alcove and a high position to allow the passage of the ring out of the alcove, a button used to control the movement of the hatch from one to the other of its positions; Figure 7aillustrates a sectional view of a helmet according to the invention. The base fixed to the hard shell belongs to a housing, the ring being rigid and open inside the housing, curved ends of the ring located on either side of the opening of the ring penetrating into lateral rails 50 for guiding the translation of the ring between its stowed and extended positions, each of these rails being formed on the base, in this case on opposite longitudinal sides of the base; Figure 7b illustrates a bottom view of the helmet of the Figure 7a where we see that the curved ends of the open ring are each located in one of the rails 50 of the base which corresponds to it in order to be able to slide between its extended and stored position, the ring being here in the extended position, the helmet is here represented without its soft shell which is normally positioned inside the hard shell so that the housing is located between this soft shell and the hard shell; Figure 7cis an exploded view of the housing shown in Figures 7a and 7b ; there Figure 7d shows a longitudinal sectional view and a front view of the housing of the Figures 7a to 7c , the ring being here in the extended position; the Figure 7e shows the case of the Figure 7d and the ring carried by the base, this ring being in the stowed position; the Figure 8a is a sectional view of a helmet according to the invention, this view being similar to that of the Figure 7a but here the ring is a closed ring; the Figure 8b illustrates a bottom view of the helmet of the Figure 8a ; there Figure 8c is an exploded view of the housing shown in Figures 8a and 8b ; there figure 8d shows a longitudinal sectional view and a front view of the housing of the Figures 8a to 8c, the ring being here in the extended position under the effect of two return members of the ring from its stored position to its extended position, these members being placed inside the housing 20 and each of these return members 30 belonging to a group of members which may comprise an elastic return member such as a helical spring, a magnetic return member such as a permanent magnet; Figure 9a is a sectional view of a helmet not covered by the invention, in an example where the ring is simply pivotally mounted on the base, without a casing, this base being fixed in the cavity 16 of the hard shell to be opposite the soft shell; Figure 9b illustrates a bottom view of the helmet of the Figure 9a ; there Figure 9c illustrates views of the base and ring of the Figures 9a and 9b , the rigid ring 11 is pivotally mounted on the base 17 to be in the stowed position as in the left view or in the extended position as in the right view; figure 10illustrates an electronic device 60 intended to be at least partially worn by the helmet 1, in this case, this device 60 comprises an electronic device 61 for detecting at least one current position of the ring 15 relative to the housing 20 (this electronic device 61 for detecting at least one current position of the ring relative to the housing is worn by the helmet, in this case it is worn by the housing and it is arranged to emit a signal representative of this current position via a communication channel, this message being intended for another electronic device possibly integrated into the helmet, for example inside the housing, or remote from the helmet, to control the execution or stopping of a functionality implemented by this other electronic device). DETAILED DESCRIPTION OF THE INVENTION

[0022] In reference to the figures 1 to 8, the invention mainly relates to a helmet 1 comprising a hard shell 11 and a soft shell 12 extending inside the hard shell.

[0023] This helmet includes an attachment device 13 to allow the attachment of an anti-theft system 14 external to the helmet.

[0024] The attachment device 13 comprises a ring 15 for the passage through the ring of a link of said anti-theft system 14 external to the helmet.

[0025] This anti-theft system link can be an anti-theft system cable or an anti-theft system chain or an anti-theft system U-lock.

[0026] This ring 15 is mechanically connected to the hard shell 11 so as to be movable relative to this hard shell 11 between a stowed position and an extended position.

[0027] In the stowed position, a major part of the ring 15 is located inside a cavity 16 at least partially delimited by said hard shell 11.

[0028] In the extended position at least a portion of the ring 15 is located outside said cavity 16 to allow passage into the ring of said anti-theft system link 14.

[0029] As understood from various figures, the helmet comprises a rigid base 17 which is rigidly fixed against the hard shell 11, said ring being mechanically connected to the hard shell 11 via this rigid base 17.

[0030] A thief attempting to insert a tool between the base 17 and the hard shell 11 would risk destroying / damaging the hard shell 11, rendering the helmet unusable. This deters the thief from stealing the helmet because it risks rendering it inoperable.

[0031] As we understand from the Figures 7a to 7e And 8a to 8e, this base 17 comprises guide surfaces 50a for moving said ring 15 relative to the base 17 to guide the movement of the ring between the stored position and the extended position.

[0032] These guide surfaces 50a are fixedly positioned relative to said hard shell 11 and are mainly placed inside said cavity 16.

[0033] As these guide surfaces 50a are directly formed on the base 16 which is rigidly fixed against the hard shell 11, the guiding of the ring 15 in movement between its stowed position and its extended position is made more precise and the amplitudes of the movement of the ring relative to the hard shell are thus limited.

[0034] The possibilities of introducing tools to separate the ring 15 from the rest of the helmet are again reduced, which helps to deter the thief.

[0035] Furthermore, as these guide surfaces are mainly, preferably entirely, placed inside said cavity 16, they are more difficult to access by the thief's tools, which increases the security of the mechanical connection between the ring and the hard shell.

[0036] The ring preferably belongs to a part with a section distant from the ring remaining permanently in the case to improve the retention of the ring.

[0037] As seen on the figures 8c to 8e , this remote section may include longitudinal slots for guiding the springs 30.

[0038] On the embodiments illustrated in figures 1 , 4 , 8a to 8e , the guide surfaces 50a are arranged to allow only a translation of the ring 15.

[0039] On the embodiments illustrated in figures 2 , 5, 6, the guide surfaces are arranged to allow only rotation of the ring relative to the base 17.

[0040] On the embodiment illustrated in Figures 7a to 7e , the guide surfaces 50a are arranged to essentially allow a translation of the ring relative to the base and to allow a rotation of less than 10° of the ring relative to the base. This rotation takes place around an axis perpendicular to a main axis of translational movement of the ring from the stored position to its extended position.

[0041] This limited rotation of less than 10° angle is used so that the ring 15 can bypass stops 18 which are here fixed relative to the base so as to be on the shortest path of the ring going from the stowed position to its extended position.

[0042] Preferably, an elastic blade 19 can oppose the pivoting of this ring 15 to hold it against these stops 18 when the ring is in its stored position and thus to oppose the bypassing of these stops 18.

[0043] As we understand from figures 7c to 7e , so that the ring 15 can move from its stored position to its extended position, it is necessary: firstly exert a pivoting force on the ring which goes against the elastic blade 19 until the ring has bypassed the stops 18; and secondly translate the ring by sliding along the rails 50 until this ring arrives in its extended position.

[0044] Preferably, the base 17 is rigidly fixed against the hard shell (11) via a plurality of fixings 17a spaced apart from each other so that this base 17 is pressed against the hard shell 11 under the effect of this plurality of fixings 17a.

[0045] Having multiple fasteners 17a strengthens the connection between the base 17 and the hard shell to prevent this base 17 from being able to pivot relative to the hard shell 11.

[0046] Using a plurality of spaced fasteners increases the strength of the base / hard shell connection, again helping to deter the thief.

[0047] Ideally, one fastener 17a of the plurality of fasteners is selected from the group of fasteners consisting of a rivet, a screw, an overmolding of the hard shell onto areas of the base, and a combination of these fasteners.

[0048] In each of the embodiments of the invention, it will be preferred that the base 17 be placed entirely inside said cavity 16, which makes it less accessible to a thief seeking to damage it.

[0049] According to the invention, the helmet 1 also comprises a housing 20, the base 17 belonging to this housing 20 and this housing 20 also comprising a cover 21 preventing access to a mechanical connection zone between the ring and the base.

[0050] In the stowed position, the said major part of the ring is inside the case.

[0051] Thus, when it passes between its stored and extended positions, the ring 15 moves between the base 17 and the cover 21 of the housing 20.

[0052] In the mode of figures 8c to 8e , the base 17 and the cover 21 are flat and parallel and provide guidance for the ring 15 which is located between this base and this cover.

[0053] Preferably the base is a single-piece metal part which is preferably forged, preferably in stainless steel, for example 316 steel.

[0054] Preferably the ring is a single-piece metal part which is preferably forged, preferably in stainless steel, for example 316 steel.

[0055] The soft shell is preferably made of polystyrene.

[0056] The helmet may also include a comfort liner placed inside the soft shell to prevent direct contact between the soft shell and the user's head.

[0057] As illustrated on the Figures 7a to 7e , the ring 15 may be an open rigid ring which, in any of said stowed position and extended position, is open only inside the housing.

[0058] In this mode, as the ring is rigid, it is difficult to deform but it remains more easily deformable than a closed rigid ring.

[0059] Locating the opening of the rigid ring only inside the housing 20 increases the resistance to the separation of the ring 15 because access to its opening can only be achieved by forcing the housing 20.

[0060] To compensate for the mechanical weakness of an open rigid ring, the housing may include lateral stops limiting the spreading capacity of the opening of the ring 15 which is located inside the housing.

[0061] Furthermore, the fact that the ring 15 is open inside the housing makes it possible to free up space inside the housing.

[0062] This free space inside the housing 20 is thus available to position at least one portion 61 of an electronic device 60.

[0063] Several embodiments of electronic devices will be described below.

[0064] According to another embodiment illustrated in Figures 8a to 8e, the ring 15 may be a closed rigid ring.

[0065] A closed rigid ring has improved mechanical strength compared to an open rigid ring.

[0066] According to another embodiment not illustrated, the ring may be flexible and be formed by a cable having first and second terminal ends, these first and second terminal ends being attached to the base.

[0067] In this embodiment not illustrated, the helmet may also comprise a locking device movable between a locking configuration and an unlocked configuration under the action of a control of this locking device (such a control of the locking device is for example a lock actuated by a mechanical key or an electrically controlled lock).

[0068] This locking device is fixed to the helmet, preferably against the base, preferably inside the housing.

[0069] In the locking configuration, the second end of the cable is attached to the base via the locking device and in the unlocked configuration, the second end of the cable is free and is outside the housing.

[0070] Thus, either both ends of the cable are directly connected to the base, or only one of these ends is directly connected to the base, the second of these ends being connected via the locking device in the locking configuration.

[0071] The advantage of using a flexible ring formed by a cable allows the shape of the ring to be adapted to the need for fixing with the external link of the anti-theft system.

[0072] In the embodiment where the second end of the cable is connected to the base via the locking device, the only locking means carried by the helmet can be used to secure the helmet to any link of an anti-theft system external to the helmet.

[0073] In this mode, this link of the anti-theft system can be a fixed fastener in the form of a closed ring.

[0074] In the unlocked configuration the second end of the cable can pass through the fixed closed ring-shaped link.

[0075] In each of the embodiments of the invention, such as that of the Figures 7a to 7e , the housing 20 may comprise two rails 50 for guiding the ring 15 in translation between the stored position and the extended position.

[0076] Likewise, as previously indicated with reference to these same Figures 7a to 7e, the housing 20 may comprise / support at least one mechanical stop 18 arranged to be in contact against the ring 15 when the latter is in the stored position so as to prevent it from passing towards its exit position.

[0077] According to another aspect, illustrated on the figures 8c to 8e , the helmet 1 may also include a manual actuation zone for the ring arranged to control the passage of the ring from its stowed position to its extended position in response to a manual action exerted on this manual actuation zone.

[0078] Typically the manual actuation area of ​​the ring may be a button of a ring locking mechanism, or a bearing area formed on the ring, the ring then acting on a ring locking mechanism.

[0079] This ring locking mechanism is preferably arranged to automatically hold the ring in its stowed position when this ring is manually moved into this stowed position and to move the ring to its extended position in response to manual action on the manual actuation zone of the ring.

[0080] For example, the ring locking mechanism may include a monostable hook 24 mechanically connected to the manual actuation zone 26 and movable between a monostable position for holding the ring in its stowed position (illustrated in figure 8e ) and a release position (illustrated in figure 8d ) reached in response to said manual action on the manual actuation zone of the ring 26.

[0081] As illustrated on the figures 8c, 8d, 8e, this hook 24 is a pivoting rocker 24 which is placed inside the housing 20 to pivot there around a fixed axis 25 located inside the housing 20.

[0082] A second elastic return member 27 which is here a compressible helical spring but which could be an elastic blade (or any other functional equivalent conventionally known to a person skilled in the art), exerts a return force on the hook 24 towards its monostable position for holding the ring in its stored position. The housing comprises a support zone 28 placed inside the housing and arranged to support a portion of said second elastic return member 27.

[0083] In the present case, the support zone 28 is a passage formed in the base to receive the helical spring 27 which constitutes the second elastic return member 27.

[0084] The hook 24, here the pivoting rocker 24, comprises a support zone 29 placed inside the housing and arranged to support another part of said second elastic return member 27, in this case a second end of the helical spring 27.

[0085] In any of the embodiments where the invention comprises a housing, this housing could also be equipped with a mechanical system called "push pull" or "push pull" adapted to: allowing the ring to move from its extended position to its retracted position under the effect of a push exerted on the ring; maintaining this ring in its stowed position; allowing the ring to move from its stowed position to its extended position in response to pressure exerted on the ring to push it beyond its stowed position while moving it away from its extended position.

[0086] In some modes like those of figures 1 , 4 , 7a, 7b , 8a, 8b, said cavity 16 may be at least partly delimited by an internal face of the hard shell 11 which is opposite the flexible shell 12.

[0087] In addition to this embodiment, this cavity 16 is preferably also delimited by the flexible shell in such a way that this cavity is located between the hard shell 11 and the flexible shell 12, that is to say on the side of the hard shell 11 which is oriented towards an internal zone of the helmet 1 intended to receive the user's head.

[0088] According to other alternative embodiments such as those illustrated in figures 2 , 4 , 6 said cavity 16 is delimited by an external face of said hard shell 11, at the level of a localized depression of this external face.

[0089] The cavity delimited by the external face forms an alcove 31.

[0090] In this case, the helmet 1 may comprise a hatch 32 for closing this alcove 31 which is movable between an open position of the alcove and a closed position of the alcove.

[0091] The hatch 32 in the open position allows the positioning of the ring 15 in its extended position so that said at least part of the ring can be located outside the alcove.

[0092] The hatch 32 in the closed position prevents the ring from passing into the extended position.

[0093] In this embodiment, the helmet 1 may also include a member for returning the ring from its stored position to its extended position.

[0094] Thus, if the hatch is moved to its closed position, the ring is then moved from its stored position to its extended position under the effect of this return member.

[0095] Such a return member may be an elastic return member such as a spring, a compressible elastomer, or an elastic tab or a magnetic force return member such as a magnet.

[0096] In embodiments, such as those of figures 2 And 6 where the helmet comprises both an alcove 31, a closing hatch 32 and a base 17 for mechanically connecting the ring 15 to the hard shell 11 via the base, the hatch 32 also makes it possible to protect the base and its connection with the ring in the stowed position.

[0097] In these embodiments, the base 17 is preferably fully positioned inside the alcove 31, which protects it from the risk of it being torn off.

[0098] It should be noted that in each of the embodiments of the helmet comprising an electronic device 60, this electronic device may also comprise at least one connection port 62, this port 62 being able to be placed inside or outside the cavity.

[0099] In the case where the cavity 16 is delimited by the external face of the hard shell 11 and forms an alcove 31, this port 62 is preferably positioned in the alcove 31 so that it can be protected there by the closing hatch 32.

[0100] It is also possible that this port 62 is positioned in a space located between the hard shell 11 and the soft shell 12 and opens towards the outside of the helmet.

[0101] Typically the port is placed towards the base of the hard shell.

[0102] Such a port is, for example, a USB port for charging a battery of the electronic device.

[0103] To return to the embodiments comprising a hatch 32 for closing an alcove, the helmet can then comprise a manual actuation zone 33 for the hatch 32 arranged to control the passage of the hatch 32 from its closing position to its opening position in response to a manual action exerted on this manual actuation zone 33.

[0104] Typically the manual actuation zone 33 of the hatch 32 is a button of a hatch locking mechanism, this hatch locking mechanism being arranged to automatically maintain the hatch 32 in its closed position when it is manually moved into this closed position and to move the hatch to its open position in response to a manual action on the manual actuation zone.

[0105] For example, the actuating mechanism may comprise a monostable hook mechanically connected to the manual actuating zone and movable between a monostable position for holding the hatch in its closed position and a release position reached in response to said manual action on the manual actuating zone.

[0106] Preferably, said hatch 32 is a hatch chosen from the group of hatches consisting of a hatch sliding along and opposite an external face of the hard shell, a hatch sliding along and opposite an internal face of the hard shell, an articulated hatch arranged to pivot relative to the hard shell, and any combination of these hatches.

[0107] Preferably and in any one of the aforementioned embodiments, the helmet may comprise an electronic device 60 chosen from the group of electronic devices consisting of: of an electronic anti-theft alarm device comprising a sound transmitter and / or a transmitter of an alarm message via a wireless communication network (this message may be an SMS, an MMS or any other form of message); of an electronic device for geolocating the helmet; of a shock detection device applied to the casing; of a device for detecting breakage of the ring (for example by detecting a break in electrical continuity along the ring); of a device for detecting tearing forces applied to the casing;of an electronic device 61 for detecting at least one current position of the ring relative to the housing (this electronic device for detecting at least one current position of the ring relative to the housing is arranged to emit a signal representative of this current position via a communication channel, this message being intended for another electronic device possibly integrated into the helmet, for example inside the housing, or remote from the helmet, to control the execution or stopping of a functionality implemented by this other electronic device) and any combination of these electronic devices.;

[0108] For example, an electronic device 60 that can be integrated into the helmet, preferably in the housing, is that illustrated in figure 10 .

[0109] This device 60 includes: batteries 63 (for example of the Lithium-ion or Lithium-polymer type providing the electrical power supply for all or part of the device 60); a 3G / 4G M2M communication chip 64 providing connectivity for the device 60 via a wireless network; an accelerometer 65 for detecting shocks and / or movements; a port 62 for example recharging the batteries 63; a geolocation circuit 66 of the headset 1; an electronic detection device 61 for detecting at least one current position of the ring relative to the housing (this detection device 61 may comprise a latch with a mechanical switch moved under the action of the movement of the ring).

[0110] Depending on the position detection of the ring 15 relative to the housing 20 carried out by the ring position detection device 61: if the ring is detected in the stowed position, the communication functions of the circuit via a wireless network are then deactivated (this makes it possible to protect the user from exposure to communication signals) possibly all the other functions of the device 60 could also be deactivated; and if the ring is detected in a position other than the stowed position (for example in the extended position), a shock detection function by the accelerometer is then activated and in the event of detection of such a shock, the performance of at least one action is then commanded by the electronic device 60.

[0111] This at least one action is for example: the transmission of the current position of the headset detected using the geolocation circuit 66 of the headset 1; the generation of at least one audible and / or visual alarm via an alarm means belonging to this device 60.

[0112] More precisely, upon detection of the position outside the ring, the device 60 is activated and records the geolocated position of the helmet and information relating to possible shocks, vibrations or movement of the helmet, or attempted break-in.

[0113] The device 60 communicates remotely with the headset owner's telephone via a wireless network (for example via a WEB server and an application installed on this telephone).

[0114] At a determined frequency, the device transmits to said telephone, via the wireless network (for example via a 3G, 4G, 5G network), geolocalized position information and possible alerts relating to possible shocks, vibrations or movement of the headset, attempted break-in.

[0115] The user is thus warned in the event of an attempted theft of his helmet, allowing him to act accordingly while knowing the position of his helmet.

[0116] When the headset is in use, the ring is then placed in its stowed position which is detected by the electronic detection device 61 and the communication functions of the circuit via the wireless network are then deactivated along with possibly all the other functions of the device 60.

[0117] The invention is not limited to the examples described above and may include other embodiments.

[0118] Furthermore, although the base and / or the cover and / or the entire housing described above are preferably made of metal, at least some of them could be made of plastic material. In this case, it will be preferable for the aforementioned electronic device 60 to be integrated into the helmet to detect an attempt to break into the housing and generate an alarm.

Claims

1. A helmet (1) comprising a hard shell (11) and a flexible shell (12) extending inside the hard shell, the helmet including an attachment device (13) suitable for attaching to an antitheft system (14) external to the helmet, the attachment device comprises a ring (15) suitable for having a link of said antitheft system (14) external to the helmet pass therethrough, the ring (15) being mechanically connected to the hard shell (11) so as to be movable relative to the hard shell (11) between a stowed position and an extended position; · in the stowed position, a major portion of the ring (15) is located inside a cavity (16) that is defined at least in part by said hard shell (11) and, in the extended position, at least a portion of the ring (15) is located outside said cavity (16) to enable said link of the antitheft system (14) to pass through the ring, the helmet further including a rigid base (17) that is rigidly fastened against the hard shell (11), said ring being mechanically connected to the hard shell via the rigid base and said base (17) including guide surfaces (50a) for guiding movement of said ring (15) relative to the base (17) in order to guide the movement of the ring between the stowed position and the extended position, the guide surfaces (50a) being fixed in position relative to said hard shell (11) and being located for the most part inside said cavity (16), characterized in that the helmet includes a housing (20), the base (17) belonging to the housing (20), the housing also including a cover (21) preventing access to a mechanical connection zone between the ring and the base, in the stowed position, said major portion of the ring being located inside the housing.

2. A helmet according to claim 1, wherein said base (17) is rigidly fastened against the hard shell (11) by a plurality of fastenings (17a) that are spaced apart from one another so that the base (17) is pressed against the hard shell (11) under the effect of the plurality of fastenings (17a).

3. A helmet according to claim 2, wherein a fastening (17a) of the plurality of fastenings is selected from the group of fastenings consisting in: a rivet, a screw, molding the hard shell over zones of the base, and combinations of these fastenings.

4. A helmet according to any one of claims 1 to 3, wherein the base (17) and the cover (21) are flat and parallel, and they guide the ring (15) that is located between the base and the cover.

5. A helmet according to any one of claims 1 to 3, wherein the ring (15) is a rigid ring that is open and that, in any of said stowed and extended positions, is open solely to the inside of the housing.

6. A helmet according to any one of claims 1 to 4, wherein the ring (15) is a rigid ring that is closed.

7. A helmet according to any one of claims 1 to 3, wherein the ring is flexible and is constituted by a cable having first and second terminal ends, which first and second terminal ends are attached to the base.

8. A helmet according to claim 7, further including a locking device that is movable between a locked configuration and an unlocked configuration under the action of a control of the locking device, the locking device being fastened to the helmet, in the locked configuration, the second end of the cable is attached to the base via the locking device and, in the unlocked configuration, the second end of the cable is free and is located outside the housing.

9. A helmet according to any one of claims 1 to 5, wherein the housing contains at least one return member (30) for returning the ring from its stowed position towards its extended position, said member being placed inside the housing (20) and said return member (30) belonging to a group of members comprising a resilient return member, and a magnetic return member.

10. A helmet according to any one of claims 1 to 5, wherein the housing (20) includes two rails (50) for guiding the ring to move in translation between the stowed position and the extended position.

11. A helmet according to any one of claims 1 to 5, wherein the housing (20) includes at least one mechanical abutment (18) arranged to be in contact against the ring (15) when the ring is in its stowed position so as to prevent it from passing towards its extended position.

12. A helmet according to any one of claims 1 to 5, wherein the helmet (1) also includes a manual actuation zone for actuating the ring and arranged to cause the ring to pass from its stowed position to its extended position in response to manual action exerted on the manual actuation zone.

13. A helmet according to any one of claims 1 to 12, also including an electronic device (60) selected from the group of electronic devices constituted by: · an antitheft alarm electronic device comprising a sound source and / or a transmitter for transmitting an alarm message via a wireless communications network; · an electronic device for geolocating the helmet; · a device for detecting an impact applied to the housing; · a device for detecting breaking of the ring; · a device for detecting tear-off forces applied to the housing; · an electronic detector device (61) detecting at least one current position of the ring relative to the housing; and any combination of these electronic devices.

14. A helmet according to any one of claims 1 to 3, wherein said cavity (16) is defined at least in part by an inside face of the hard shell (11) that faces the flexible shell (12).

15. A helmet according to any one of claims 1 to 3, wherein said cavity (16) is defined by an outside face of said hard shell (11), in a setback located in the outside face.

16. A helmet according to claim 15, wherein the cavity defined by the outside face forms an alcove (31), the helmet (1) including a hatch (32) for closing the alcove (31), the hatch being movable between an alcove-open position and an alcove-closed position, the hatch (32) in the open position allowing the ring (15) to be positioned in its extended position so that said at least one portion of the ring is located outside the alcove, and the hatch (32) in the closed position preventing the ring from passing to the extended position.

17. A helmet according to claim 16, also including a manual actuation zone (33) for actuating the hatch and arranged to cause the hatch (32) to pass from its closed position towards its open position in response to manual action exerted on said manual actuation zone.