The present invention relates to a helmet covering envelope,
especially for a helmet used for skiing. It also relates to the helmet equipped with this wrapping envelope. Wearing a helmet is necessary for the practice of certain sports, especially skiing. Some users, however, consider the visual appearance of a helmet as unattractive and prefer to give up wearing a helmet at the expense of safety. These users would like to be able to modify the presentation of the headset, but there is currently no means available for this purpose on the market.
It is known in general to provide a casing of a helmet. However, the known covering envelopes have the disadvantage of not allowing a perfect maintenance of the covering envelope on the helmet and not to allow easy and quick interchange of a covering envelope by another. In addition, the known casing envelopes have the disadvantage of significantly reducing the possibility of ventilating the inside of the helmet, leading to an accumulation of perspiration inside thereof. The present invention aims to remedy all of these disadvantages. For this purpose, the covering envelope that it concerns comprises at least one band fixed inside it, each band being intended to be fixed to the helmet, firstly in a zone situated on the front side the helmet and on the other hand an area on the back side of the helmet. This double possibility of fixing on the front zone and on the rear zone of the helmet assures a perfect assembly of the covering envelope, suitable to allow this envelope to remain in place even in the event of a fall generating significant friction on the helmet , as can be the case when skiing. The covering envelope may especially be in the form of a cap or toque covering the entire helmet and thus concealing the latter. Advantageously, each band is removably attached to the helmet by means of quick-acting fastening means that it itself and the helmet comprise.
Each strip can thus be easily and quickly separated from the helmet to allow interchange of the wrapping, either in order to clean this wrapping, or to change the appearance of the helmet.
According to one possible embodiment of said fast-acting fixing means, each band has, at one end, a hook-shaped portion adapted to be engaged around the edge of the helmet, and at its other end, other means of fixing adapted to ensure the maintenance of the hook-shaped part in engagement position around the edge of the helmet. These other fastening means may comprise a hook-shaped portion identical or similar to that of the other end of the band, snaps, or a grasshopper-type fastener. Preferably, the helmet comprises at least one groove formed from its outer face, and a strip as aforesaid is intended to be placed in this groove, with lateral setting. The band is thus maintained over the entire length of the helmet, which helps to ensure perfect fitting of the casing on the helmet. The band may have beveled edges, and the flanks of the helmet defining said groove may have corresponding beveled areas in which these beveled edges are placed during the establishment of the band. The seat of the band on the helmet is thus increased and a self-centering of the band with respect to the helmet is achieved at the time of placing the band on the helmet. Advantageously, at least one band comprises a flared end, such that the band has an increased width at this end. This flared end increases the bearing surface 30 of the band against the edge of the helmet and thus strengthen the maintenance of the band relative to the helmet. According to one embodiment of the invention, - the helmet comprises holes communicating the inside and outside of the helmet, which open out of the helmet and are arranged in at least one series of holes, each series being arranged so that it can be covered by the same band, and each band delimits with the wall of the helmet, when attached to this helmet, an air flow duct opening on the front and on the back 5 of the helmet. The helmet according to the invention thus comprises holes opening directly to the outside and a strip comes, when it is in place, covering these holes, forming with the wall of the helmet a conduit communicating directly with these holes. This duct opens on the front and on the back of the helmet and, when the user moves, is traversed by air flowing from the front to the back of the helmet; this air flow allows, by Venturi effect, to operate a natural ventilation of the inside of the helmet, even when said casing is placed on the helmet, this air circulation allowing, therefore, to effectively combat any formation or accumulation of perspiration between the user's skull and the helmet. At least one opening through which said airflow duct opens onto the outside of the helmet may include means for opening / closing this duct to allow selective control of a ventilation or absence of ventilation. The invention will be better understood, and other features and advantages thereof will appear, with reference to the appended schematic drawing, showing, by way of non-limiting examples, several possible embodiments of the covering envelope and of the helmet concerned. Figure 1 is a perspective view of a casing according to a first embodiment; Figure 2 is a view of the interior of this casing; Figure 3 is a perspective view of a helmet for receiving the casing envelope; Figure 4 is a view of the helmet and the casing in longitudinal section, in the course of implementation of the latter on the helmet; Figure 5 is a view similar to Figure 4, after placing the envelope on the helmet; Figures 6 to 8 are views of three possible embodiments for the casing; Figure 9 is a perspective view of an envelope and a helmet according to a second embodiment, the casing having been slightly rolled up to make visible the mounting areas of the casing on the helmet ; Figure 10 is a perspective view, on an enlarged scale, of a type of grasshopper attachment that comprises the helmet, in the unlocked position of said casing envelope; Figure 11 is a perspective view of the helmet according to a third embodiment and a tape for mounting the envelope, the latter having been omitted for the sake of clarity, and Figure 12 is a perspective view. the helmet and this band after mounting the tape. For simplicity, the elements or parts that are found from one embodiment to another will be designated by the same numerical references will not be described again. FIGS. 1 to 5 represent, from different angles, a covering envelope 1 that can be mounted on a helmet 2 by means of a strip 3. In the example shown in FIG. 1, the envelope 1 is of the " cap". It is sized to encompass the entire outer surface of the helmet 2. The helmet 2 comprises an outer rigid shell 5 and a lining 6 of expanded rigid material, especially polystyrene, and comprises means for attachment to the head of the user, in particular in the form of lateral flanges 7, a chinstrap (not shown) and possibly a chin guard or chin protection structure 8, as it appears in FIG. 5. The helmet 2 also comprises a middle groove 10 extending from its front zone to its rear zone, and notches 11 front and rear. The band 3 has a curvature and dimensions such that it extends along the wall of the casing 1 and can take place on the helmet 2 at the groove 10. It includes holes allowing its attachment to the casing 1 by the seams 12, and has hook-shaped ends 13 adapted to be engaged in the notches 11 so that these ends, after engagement, are flush with the edge of the helmet 2, as shown in Figure 5.
Thanks to this double possibility of fixing on the front zone and on the rear zone of the helmet 2, the band 3 ensures a perfect assembly of the casing 1, able to allow this envelope to remain in place even in case of fall generating significant friction on the helmet 2, as may be the case when skiing. Figures 6 to 8 show that the envelope 1 may in particular be in the form of a prominent flange cap (Figure 6), a leather helmet (Figure 7) or a toque (Figure 8). In the embodiment shown in FIGS. 9 and 10, the helmet 2 comprises a "grasshopper" -type fastener consisting of a tab 15 pivotally mounted on the edge of the helmet and a buckle 16 pivotally mounted on the lug 15. leg 15 engaging in a recess 17 arranged in the rear middle zone of the helmet 2, inner side. The band 3 then has, in place of the hook portion of the first embodiment, a curved end 13 slightly flexible, engageable in the loop 16. In the locking position shown in Figure 9, the end 13 is held against the edge of the helmet 2 by said fastener; when the tab 15 is tilted away from the wall of the helmet 2, the loop 16 is pivoted relative to the tab 15 and releases the end 13 (Figure 10). In the embodiment shown in Figures 11 and 12, the groove 10 flares out at its front and rear ends, thereby increasing in width. A series of holes 20 is arranged at the bottom of this groove 10, these holes 20 passing through the shell 5 and the lining 6, and thereby communicating the inside and the outside of the helmet 2. The holes 20 widen from the inside to the outside of the helmet 2. The band 3 is intended to be fixed on the helmet 2 by completely covering the groove 10, as shown in FIG. 12, the front and rear end portions of this band 3 being then flared identically to the flares of the groove 10. After placement, the outer face of the strip 3 is flush with the outer face of the helmet 2. The front end portion of the strip 3 forms a hook 13 for to be engaged around the median zone of the front edge of the helmet 2. The wall of the hook 13 intended to extend along the edge of the helmet 2 after assembly comprises, opposite the space delimited by the bottom of the groove 10 and by Band 3, open erts permitting the entry of air into this space. The rear end portion of the band 3 forms an "L" tab connected to the remainder of the band by a film hinge 26. This tab 25 is intended to be folded around the rear middle edge of the helmet 2 and to be Removably locked in a suitable housing. In the embodiment shown in Figures 11 and 12, the rear end portion of the band 3 has holes 27 at its flared zone. The band 3, the groove 10, the openings of the hook 13 and these holes 27 together form a duct into which air can flow when the user moves. This flow allows, by Venturi effect, to operate, through the holes 20, a flow of air in the space between the inner face of the lining 6 and the skull of the user and, therefore, to fight effectively against any formation or accumulation of perspiration at this location. The widening of the holes 20 from the inside to the outside favors this Venturi effect; the flared shape of the front end portion of the strip delimits, with the non-flared portion of the strip, a narrowing in width of the flow duct, which allows a certain acceleration of the flow of air to the inside said duct, which is favorable to the existence of effective natural ventilation inside the helmet 2. The maintenance of the casing 1 can be reinforced by side snaps 35 fixed to the helmet 2 As appears from the foregoing, the invention provides a helmet, in particular for skiing, having the decisive advantages of allowing a modification of the visual appearance of the helmet while allowing a perfect maintenance of the helmet. dressing 1 on the helmet 2, quick and easy interchange of this wrapping envelope with another and, where appropriate, ventilation of the interior of the helmet 2 effective and inexpensive to achieve. It goes without saying that the invention is not limited to the embodiment described above by way of example but that it extends to all embodiments covered by the appended claims. In particular, the helmet 2 may not include a groove 10 and the band 3 may have lateral flanks whose edges are applied against the outer face of the helmet 2, to define said air flow duct; these edges can be received in grooves allowing lateral retention of the band 3.