MXPA97005133A - Helmet of protection and your device of fixing of barboqu - Google Patents

Abstract

The present invention relates to a device for attaching a chinstrap to a protective helmet comprising a main outer shell of the type comprising removable and detachable hitch means for its chinstrap, constituted by the cooperation of a coupling rod integral with the chin strap to be gripped with a notch of engagement attached to the wall of the helmet, characterized in that the coupling device is constituted by a coupling profile integral with a pivoting grip, while the latching notch is constituted by a hollow profile corresponding to

Description

PROTECTION HELMET AND YOUR BARBOQUEJO FIXING DEVICE The present invention relates to a protective helmet, and more particularly to the fastening device of its chinstrap. Protective helmets have long been a common use in different fields, either professionally, such as the military, gendarmes or firefighters, whether civil or private, as is the case for motorcycle users. or racing or racing cars. There are already known protective helmets that are used in different fields and are worn by different users such as cyclists, motorcyclists, firemen, skiers and others, such as aircraft or helicopter pilots. All current helmets, whatever their use, comprise an external rigid cover having the general shape of a sphere, comprising a face opening, and whose capacity thus formed comprises protective and comfort filling elements intended to adjust the head of the user. On the other hand, the helmet is traditionally retained on the user's head by a flexible chin strap attached to the side parts of the helmet. The current devices for joining the chinstrap are totally unsatisfactory and ineffective, often unreliable, and are very unsightly and the removal or placement of the helmet is most of the time too difficult, and sometimes it happens that the chin strap disengages untimely, not ensuring then the helmet its protective function in good condition. The object of the present invention is to remedy these drawbacks by proposing a novel chinstrap attachment device which allows for a simple and quick disconnection in its place and disconnection for the user, ensuring reliable and safe chin strap retention. Thus, according to the invention, the fastening device of a chinstrap in a protective helmet is of the type that allows a removable connection, and is characterized in that the means for hooking the chinstrap are constituted by the cooperation of a hooking member attached to the chinstrap designed to be attached with a notch of integral hook to the wall of the helmet. According to a complementary feature of the invention, the hooking member is constituted by a cylindrical profile integral with a gripper lever pivoting while the hooking notch is constituted by a corresponding hollow profile. According to another arrangement, locking means are provided to lock the arresting lever to the helmet and especially its side wall detachably.

According to one embodiment, the clamping lever is mounted pivoting on a retaining part to which the chinstrap strap is attached. We also note that the hollow profile that forms the latching notch opens upwards and is closed at its ends by two end walls and is limited to the outside by an external protruding profile that serves as a retaining and latching flange and towards the wall of the hull by means of a rear wall, while the retaining rim is, at its central part, interrupted by a central cut intended for the passage of the retaining end of the retaining part of the hook member. According to a preferred embodiment of the invention, the latching notch is integral with an independent flange piece fixed on one of the lateral wall portions, and conveniently close to the lateral flange of said lateral wall portion. The invention also relates, and of course, to the helmet equipped with the device. On the other hand it is necessary to note that each of its lateral wall portions conveniently comprises the device, which allows a total disconnection of the chinstrap, but it could be otherwise, and the helmet could have for example no more than a single removable attachment device on one side only, so the chinstrap would be fixed immovably to the other side of the helmet. Other characteristics and advantages of the invention can be deduced from the following description in view of the attached drawings that are given as non-limiting examples. Figure 1 is an external side view of a helmet according to the invention with its chinstrap. Figure 2 is a perspective view of the helmet with its chinstrap. Figures 3, 4, 5 and 6 more particularly represent the hitch notch integral with the hull. Figure 3 is a partial front view. Figure 4 is a view according to f4 of Figure 3. Figure 5 is a sectional view according to V-V of Figure 3. Figure 6 is a sectional view according to VI-VI of the Figure 3. Figures 7 and 8 represent the end of the chinstrap, with its hooking means and in particular its hook member intended to cooperate with the hooking notch. Figure 7 is a plan view while Figure 8 is a side view according to f8. Figures 9 and 10 are presentations illustrating how the removable detachable connection between the chin strap and the helmet is made.

Figure 9 is a plan view while Figure 10a is a partial sectional view according to X-X, with Figure 10b being a section according to A-A. Figures 11, 12 and 13, illustrate how the chinstrap is hooked. Figure 14 is an exploded perspective view of the helmet without the chinstrap, the pieces of the rim being removed. Figure 15 is a top view of the helmet with its chinstrap. Figures 16, 17 and 18 illustrate three ways to disconnect the chinstrap. Figures 19 and 20 are sectional views respectively B-B and C-C, Figure 1 shows more particularly how the extension of the flange piece is shaped. Figure 21 represents a variant of execution in side view. Figures 22 and 23 are views similar to Figures 12 and 13 illustrating a variant embodiment of blocking the device. Figure 24 is a view similar to Figure 21 showing another variant. The protective helmet represented by way of example in Figures 1 to 18 carries the general reference (1) is especially an aircraft pilot helmet, which has a longitudinal plane of general symmetry (P) comprising in a manner known per se a main external cap (2) that has a front facial opening (3) with an internal filling commonly called bonnet (4). The main external cover (2) is constituted by a substantially spherical wall (5) of vertical general plane of symmetry (P) which is advantageously made of composite material of the type comprising a stack of layers of reinforcing fibers, impregnated and bound between them by a resin matrix. The fibers can be glass, aramid, nylon, polyethylene or carbon fibers, while the matrix can be a thermoset or thermoplastic type resin. The main external cover (2) comprises many wall portions, namely, a front upper wall portion (6) extended rearwardly by an upper rear portion of the wall (7), the same extended downward by a lower rear portion wall (8), and comprises, on the other hand, two side wall portions (9). The upper front portion (6) corresponds to the area occupied by the front of the user and is limited by the upper flange (10) of the facial opening (3) which, in itself, is laterally limited by two lateral flanges (11). The upper rear wall portion (7) corresponds to the area occupied by the cranial vault of the user, while the lower rear wall portion (8) corresponds to the area occupied by the nape of the user. We add to this that the wall (5) of the cap is limited downwards by a lower edge (12) extending in a general plane (Q) inclined with respect to the horizontal plane (H) to extend backwards (AR) and towards above (HA). The lateral wall portions (9) correspond to the areas occupied by the user's ears and are limited forwardly by the corresponding lateral flange (11) of the facial opening (3) and downwards by the front ends of the lower flange (12). ). The connection between the lateral flanges (11) and the lower flange are made according to an advantageously curved splice flange (13). The helmet of the invention comprises a chinstrap (14) detachably retained in the side wall portions (9) of the cover (2) of the helmet (1) and more particularly in the splice flange (13) of each of said side wall portions (9) . The chin strap (14) is constituted by a flexible strap (15) having at its two ends (16) a hooking member (17). According to an arrangement of the invention, each of the hooking members (17) is arranged pivoting on a retaining part (18) by means of a transverse axis (19). The retaining part (18) is a substantially flat part comprising a retaining end (180) having the pivot axis (19) of the latching member (17) and a widened end (181) comprising the holding means and of arrangement for the belt (15) constituted by two transversal cuts (182, 183) separated by a traversed one (184), said two transversal cuts allow the passage of the mail as it is already known. The coupling member (17) comprises a cylindrical profile (20) integral with an arresting lever (21). The cylindrical profile (20) is interrupted in its central part by a central cut (22) intended to receive the retaining end (180) of the corresponding retaining part (18). The hooking member (17) of the chinstrap (14) is intended to cooperate with a latching notch (30) integral with the helmet (1) and more particularly with its main external cover (2) and especially its wall (5). According to an advantageous arrangement of the invention, the latching notch (30) is externally disposed to the lateral portion of the wall (9) of the wall (5) of the helmet and in the vicinity of the wall flange (13). Note that the chin strap (14) is removable and can advantageously be totally or partially disconnected from the helmet itself, as we will see later. To this end, the fastening device of the chinstrap is symmetrical and each of the side wall portions (9) thus comprises a latching notch.

Said latching notch (30) is constituted by a hollow profile (31) intended to cooperate with the cylindrical profile (20) of the corresponding latching member (17).

This hollow profile advantageously has a shape complementary to the profile of the coupling member. Thus, this hollow profile (31) is substantially cylindrical to extend along an axis (XX ') parallel to the flange (13). The axis (XX ') is inclined to extend upwards (HA) and forward (AV) to form with the horizontal (H) an angle (A) open to the front with a value between 30 and 60 degrees and for example 40 degrees. The hollow profile (31) is of course open upwards and advantageously closed at its ends by two end walls (32, 33) and is limited to the outside by an external projecting profile (34) serving as a retaining flange and for hook and towards the wall of the helmet by means of a back wall (35). The retaining flange (34) is, in its central part, interrupted by a central cut (36) intended for the passage of the retaining end (180) of the retaining part (18) of the coupling member (17). Note that the latching notch (3) is arranged on the lateral wall portion (9) and advantageously in the vicinity of the lateral flange (11) and more particularly of the splice flange (13). According to a feature of the invention, detachable locking means are provided between the helmet and the coupling member, which allow the chinstrap to be secured to the hull in a particularly safe manner, thus preventing any untimely disengagement but of course allowing a particularly simple voluntary disengagement. Thus, the latching means are, for example, constituted by a loop-type device or some other device. A device of the type "push button" (37) of which one of the elements (38) is integral with the lever (21) of the coupling member (17) while the other element can be provided, as illustrated, can be provided. (39) is integral with the hull or the rear wall (35) of the hollow profile (31) of the latching notch (30). According to the invention, the latching notch (30) for the hook member of the chinstrap (14) is fixed to an independent flange part (40) fixed to the wall of the helmet. This piece (40) has the shape of a curved channel and is, for example, injected plastic material, fixed to the side rim of the helmet by some means, such as, for example, by screws (41) and then comprises the catch notch ( 30.31) with its end walls (32, 33) and its longitudinal walls (34, 35). Note that the flange part (40) has not only the technical functions mentioned above but also participates in the aesthetics of the helmet. Thus, the channel (40) constituting the flange piece extends not only in the area of the latching notch (30) but further towards the splice flange (13) to extend towards the lower flange (13) by means of a front extension (401) to recover a part of this lower flange, and upwards by an extension (402) to cover the side flange (11). On the other hand, the flange part (40) can be adapted to retain a breathing mask as illustrated in Figure 21. To this end, said flange piece can comprise a retaining member (41) on which the end (42) of the retaining arm (43) of a respiratory mask (44). On the other hand, said flange piece (40) could also retain another element other than a respiratory mask, as for example, a microphone (440), as illustrated in FIG. 24. The helmet according to the invention can, itself, carry one or more pivoting protective face shields, such as, for example, the one illustrated and bearing the reference (fifty) . Figures 11 to 13 illustrate how the chin strap engagement is operated. To do this, in a first time, the cylindrical profile (20) of the hook member (17) is put in place in the corresponding hollow profile (30) that constitutes the hitch catch notch (figures 11 and 12). In order to block the coupling, the user has only to pivot the clamping lever (21) towards the wall of the helmet according to V, Figure 14, to get to block said lever thanks to the blocking means (37) to put the fixing device in the position illustrated in Figures 13, 9, 10, 1 and 2. In this position, the retention of the chinstrap is particularly secure allowing a particularly simple disconnection for the user who will have only to proceed inversely by first pivoting the lever (21) to the outside in order to be able to release the socket made by the notch (30). According to a preferred arrangement, the hull is symmetrical and comprises on each side fixing means for its chinstrap, which allows the total disconnection of the chinstrap, as illustrated in Figure 15, or only partial, and especially of a right or left side in a manner as shown respectively in figures 16 and 17. Note that the lateral portions of the wall (9) conveniently comprise projections (90) that form internally holes intended to receive the ears of the user, this in order that the rest of the wall is closer to the notch of the latter. The width (Ll) outside the cover (2) of the hull is then greater than the width (L2) between the two side flanges 11 of the facial opening as well as that between the two splice flanges (13). Since the latching notches (30) are disposed in the vicinity of the splice flanges (13), it results that the width (13) between them is less than the outside width (Ll) of the outer cover (2). The fastening means of the chinstrap is then inscribed inside the lateral dimensions of the helmet and is thus protected in such a manner as to prevent unwanted engagement of the lever (17) and thus prevents any untimely disengagement of the chinstrap. It should also be noted that the pivoting of the chin strap (14) as illustrated by the double arrow R of Figure 1 is prevented by the fact that the retaining end (180) of the retaining part (18) is joined in the central cut (36) made in the retaining flange (34) as can be seen more particularly in figures 1, 9, 10a and 10b. Note also that the pivot axis (19) of the locking member (17) is preferably arranged in the region of the locking groove, so that its axis (YY ') is advantageously coaxially positioned on the axis (XX') of said housing either below the latter (XX '). It will then be noted that the axis (YY ') is advantageously arranged behind the retaining flange (34) of the latching notch. Thus, in the case of unlocking the hook member (17), untimely disengagement can not occur due to the traction that could be exerted on the chin strap. The device of the invention is thus considered perfectly reliable. It is evident that other embodiments can be visualized, such as, for example, the schematically illustrated in figures 22 and 23. According to these, the latching notch is not constituted by an independent piece fixed to the wall of the helmet, but is an integral part of the wall, to be, for example injected with it. On the other hand, blocking the apprehension lever (21) could be made by elastic deformation of the material in which the pieces are made and especially the lever (21) comprising a deformable projection (380). In addition, the surface of the part or flange (40) in cooperation with the wall of the cover is important, which allows the union by means of glue, which presents, of course, an improvement of the resistance by reducing the risks of tearing of the fabric of the wall. In effect, the use of rivet or screw would require perforations that would create zones of risk of rupture. It has then become possible, thanks to a bond by glue, a better distribution of the stresses on the cover and thus allows to make a cover with less fabric but always offering the same safety quality. Of course, the invention is not limited to the embodiments described and represented by way of examples, but also includes all technical equivalents as well as their combinations.

Claims (15)

1. A device for attaching a chinstrap (14) to a protective helmet (1) comprising a main external cover (2) of the type comprising removable and detachable hitch means for its chin guard (14), constituted by the cooperation of a latching member (17) integral with the chin strap (14) intended to be gripped with a latching notch (30) integral with the wall (2) of the helmet, characterized in that the latching member (17) is constituted by a latching profile ( 20) integral with a pivoting grasping lever (21), while the latching notch (30) is constituted by a corresponding hollow profile (31).

2. The fastening device of a chinstrap (14) to a protective helmet (1) according to claim 1, characterized in that the clamping lever (21) with the coupling member (17) is mounted hinged on a retaining part (18) on which is retained the strap (15) of the chin strap (14) around an axis (19, YY ').

3. The fastening device of a chinstrap (14) to a protective helmet (1) according to claim 1, characterized in that the hollow profile (31) constituting the latching notch (30) is open upwards and is limited to the outside by an external projecting profile (34). ) which serves as a retaining and latching flange.

4. The attachment device of a chinstrap (14) to a protective helmet (1) according to claim 3, characterized in that the axis (YY ', 19) is disposed behind the retaining flange (34) of the coupling notch. . The fastening device of a chinstrap (14) to a protective helmet (1) according to claim 4, characterized in that the coupling member (17) is a cylindrical profile of axis (YY '), while the notch of hook is constituted by a cylindrical hollow profile corresponding to the axis (XX '). The attachment device of a chinstrap (14) to a protective helmet (1) according to claim 5, characterized in that the axis (YY ') of the cylindrical hooking profile is substantially coaxial to the pivot axis (19) and to the axis (XX ') of the hollow profile (31). The fastening device of a chin strap (14) to a protective helmet (1) according to any of the preceding claims, characterized in that the retaining flange (34) is interrupted, in its central part, by a central cut (36). ) intended for the passage of the retaining end (180) of the retaining part (18) of the coupling member (17). 8. The attachment device for a chinstrap (14) to a protective helmet (1) according to any of the preceding claims, characterized in that the blocking means (37) are provided to lock the arresting lever (21) detachably. to the hull (1) and especially to its wall (2). 9. The fastening device of a chinstrap (14) to a protective helmet (1) according to any of the preceding claims, characterized in that the hollow profile (31) constituting the latching notch (30) is closed at its ends by two end walls (32, 33). 10. The fastening device of a chinstrap (14) a protective helmet (1) according to any of the preceding claims, characterized in that the hollow profile (31) constituting the latching notch (30) is limited towards the wall of the helmet by a rear wall (35) which comprises the locking means (37) of the lever. 11. The device for attaching a chinstrap (14) to a protective helmet (1) according to any of the preceding claims, characterized in that the latching notch (30) is integral with an independent flange part (40) fixed to the wall (2) of the helmet (1). 12. Protective helmet (1) comprising at least one fastening device according to any of the preceding claims, said helmet comprises a main external cover (2) having two side wall portions (9), characterized in that the latching notch (30) of the fastening device of the chinstrap is arranged on one of the lateral wall portions (9). The protective helmet (1) according to any of the preceding claims, characterized in that the latching notch (30) is close to the lateral flange (11, 13) of the side portion of the wall (9). The protective helmet (1) according to any of the preceding claims, characterized in that the latching notch (30) is constituted by an independent flange part (40) attached to the rim of the helmet. The protective helmet (1) according to any of the preceding claims, characterized in that it comprises on each side a fixing device for the chinstrap.