Protective helmet

Abstract

The protective helmet is adapted to be worn by a user and to protect the user's head against impacts, and comprises a rigid outer shell defining an interior space designed to accommodate the user's head and comprising a front opening. The protective helmet further comprises a shield removably coupled to the outer shell and configured to move between at least an activated position in which the shield covers the front opening and prevents ingress of air into the interior space and an inactivated position in which the interior space is accessible from the outside through the front opening, the shield being provided with a front hole. The protective helmet also comprises a locking device designed to lock the shield in the activated position. The locking device comprises a rotatable engagement member disposed on the outer shell and designed to engage the front hole of the shield when the shield is in the activated position.

Description

[Technical field]

[0001] The present invention relates to protective helmets worn by a user to protect the head from impact, and in particular, but not exclusively, the present invention relates to full face motorcycle helmets.

[0002] However, the helmet of the invention can also be used in technical fields other than those indicated above, such as, for example, skiing or cycling, provided that the helmet contour is appropriately adapted. [Background technology]

[0003] As is well known in the art, a motorcycle helmet basically consists of an outer shell made of a synthetic rigid material, an inner comfort liner adapted to contact the user's head when the helmet is worn, and an impact absorbing liner disposed between the outer shell and the comfort liner.

[0004] The front outer shell of the helmet is provided with a chin guard designed to protect the user's chin when the helmet is worn.

[0005] The outer shell defines an interior space for receiving a user's head when the helmet is worn, the interior space being in communication with the outside through a front opening and a bottom opening formed in the outer shell.

[0006] As is well known, a helmet is intended to be worn correctly by a user when the front opening is positioned on the user's face and vision is available through the front opening.

[0007] The motorcycle helmet further includes a shield removably coupled to the outer shell and movable relative to the outer shell to move from an activated and closed position to an inactivated position and vice versa.

[0008] In the actuated position, the shield completely covers the front opening, and in the non-actuated position, the shield does not cover the front opening or covers only a portion of the front opening, so that the interior space communicates with and is accessible from the outside through the front opening.

[0009] In the operative position, the shield prevents air from entering the interior space, and therefore, a user will typically maintain the shield in the operative position when riding the motorcycle.

[0010] In this regard, the helmet is further provided with a sealing at the front opening which cooperates with the shield to prevent the ingress of air into the interior space.

[0011] The connection between the shield and the outer shell is made by suitable fastening means located on opposite sides of the outer shell.

[0012] In particular, the shield comprises sides hinged to the outer shell by means of fastening means so as to be rotatable between an activated position and a non-activated position, and vice versa, about respective axes passing through the fastening means.

[0013] The movement of the shield by rotation is performed by the user by manipulating the shield with his hands. Fastening means for motorcycle helmets are well known in the art, therefore they will not be further described in detail below.

[0014] A drawback of the above technical solutions is that the shield is maintained in the operative position only by fixing means which in this respect may be suitably configured.

[0015] This drawback can result in unintended or partial movement of the shield from the activated position to the deactivated position, particularly in the event of a crash.

[0016] To at least partially overcome the above drawbacks, helmets have been provided that include a locking device or means for locking the shield in an operative position.

[0017] Typically, such locking devices or means are located both in the shield and in the outer shell, particularly in the chin guard, in positions facing each other.

[0018] From the following patent document 1 a helmet of the above type is known, in which the locking means comprises a hook portion arranged in the shield or in the outer shell and a counter-hook portion arranged in the outer shell or in the shield.

[0019] The hook portion comprises two teeth and the counter-hook portion comprises an element with a hole and a lateral portion intended to engage with the teeth.

[0020] Such locking means allows the shield to be placed in two different engagement positions relative to the outer shell: a first position in which the shield is fully sealed against the outer shell and fully closed against the front opening, and a second position in which the shield is only partially closed against the front opening.

[0021] In the first position, the shield completely prevents air from entering the interior space, and in the second position, the shield defines a slit at an end of the front opening to allow air to partially enter the interior space.

[0022] Furthermore, the locking means typically comprises an actuation element, a push button, suitable to be operated by a user to disengage the hook portion from the counter hook portion.

[0023] A first drawback of this technical solution is that the provision of locking means both on the shield and on the outer shell makes the construction of the helmet particularly complicated, making the manufacture of the helmet particularly time-consuming and expensive.

[0024] Another drawback of the above technical solutions is that the reliability of the actuating elements may be compromised after many uses. [Prior art documents] [Patent documents]

[0025] [Patent Document 1] U.S. Pat. No. 9,504,288 Summary of the Invention [Problem to be solved by the invention]

[0026] SUMMARY OF THE PRESENT EMBODIMENT It is therefore a primary object of the present invention to provide a protective helmet designed to overcome the above-mentioned drawbacks. [Means for solving the problem]

[0027] More specifically, it is a primary object of the present invention to provide a protective helmet in which the shield can be stably locked in an activated or closed position.

[0028] It is a further object of the present invention to provide a protective helmet that allows a user to easily and quickly lock and unlock the shield from the outer shell.

[0029] Another object of the invention is to provide a protective helmet which is particularly simple and cost-effective to manufacture.

[0030] It is a further object of the present invention to provide a protective helmet that has good reliability even after multiple uses.

[0031] Another object of the present invention is to provide a protective helmet which can stably maintain a shield in an intermediate engaged position which at least partially permits air to enter the interior space through the front opening.

[0032] The above objects, as well as other objects which will become more apparent from the following description, are achieved by a protective helmet according to claim 1.

[0033] The advantages and features of the present invention will become more apparent from the following non-exclusive description of preferred embodiments of the invention, with reference to the accompanying drawings. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a front view of a protective helmet according to the present invention. [Diagram 2] FIG. 2 is a side view of the protective helmet of FIG. 1. [Figure 3a] FIG. 2 is a perspective view of the shield of the protective helmet of the present invention; [Figure 3b] FIG. 2 is a rear view of the shield of the protective helmet of the present invention. [Figure 4] FIG. 2 is an exploded perspective view of the locking device for the protective helmet of the present invention. [Diagram 5] 2A-2D are side cross-sectional views of a locking device and a shield according to a first embodiment, cut along plane II shown in FIG. 1, in different operating positions; [Figure 6] 2A-2D are side cross-sectional views of a locking device and a shield according to a first embodiment, cut along plane II shown in FIG. 1, in different operating positions; [Figure 7] 11A-11C are cross-sectional side views of a locking device and shield according to a second embodiment in different operational positions. [Figure 8] 11A-11C are cross-sectional side views of a locking device and shield according to a second embodiment in different operational positions.

[0035] The present invention relates to a protective helmet adapted to be worn by a user and to protect the user's head against impacts. In what follows and in the accompanying figures the protective helmet is designated as a whole by the reference numeral 1.

[0036] In particular, the protective helmet 1 of the present invention is a full-face motorcycle helmet adapted to be conveniently worn by a motorcyclist.

[0037] Nevertheless, the protective helmet 1 may be advantageously used by cyclists, skiers or in other sports disciplines where effective protection of the user's head is required.

[0038] The protective helmet 1 is designed to be attached to a user's head by attachment means, not shown in the accompanying figures, such as a chin strap.

[0039] As is well known, the protective helmet 1 comprises a rigid outer shell 2, preferably made from a composite or thermoplastic material, defining an interior space designed to accommodate the head of a user when the helmet 1 is worn.

[0040] In this regard, although not shown in the accompanying drawings, the outer shell 2 is dome-shaped to fit over the user's head.

[0041] The outer shell 2 comprises a front opening 4 adapted to put the interior space in communication with the outside. The interior space also communicates with the outside through a bottom opening in the outer shell 2, through which the user inserts his / her head into the interior space.

[0042] For purposes of this specification, protective helmet 1 is intended to be worn in the correct manner when front opening 4 is positioned on the user's face so as to permit viewing therethrough.

[0043] At the front of the helmet 1, in particular below the front opening 4, the outer shell 2 may also be provided with a chin guard 6 designed to be placed on the user's chin when the protective helmet 1 is worn.

[0044] As is further known, the protective helmet 1 may also comprise: a comfort liner having an inner surface designed to be in contact with the user's head when the protective helmet 1 is worn by the user; An impact absorbing liner interposed between the outer shell 2 and the comfort liner and having an inner surface facing the outer surface of the comfort liner.

[0045] The comfort liner and the shock absorbing liner are located in the interior space and are not visible in the accompanying drawings.

[0046] The protective helmet 1 further comprises a shield 8 removably coupled to the outer shell 2, the shield 8 being shown coupled to the outer shell 2 in Figures 1 and 2 and shown alone in Figures 3a and 3b.

[0047] As is well known in the art, the shield 8 is made of a rigid transparent material, preferably selected from the group including acrylic materials or polycarbonates.

[0048] A shield 8 coupled to the outer shell 2 is configured for movement between at least an activated position and an unactivated position.

[0049] In the operative position, the shield 8 covers the front opening 4 and does not allow air to enter the interior space. The operative position of the shield 8 is shown in FIGS.

[0050] Typically, the user will maintain the shield 8 in the operative position when riding the motorcycle.

[0051] In the inactivated position, the front opening 4 is fully or at least partially free from the shield 8 and the interior space communicates with the outside via the front opening 4. The inactivated position of the shield 8 is not shown in the attached figures.

[0052] Preferably, the shield 8 comprises sides 9 which are removably coupled to the outer shell 2 by fastening means 10 for rotation about a respective axis of rotation X through the fastening means 10, as shown diagrammatically in Figures 1 and 2.

[0053] Thus, movement of the shield 8 by the user between the inactivated and activated positions is caused by rotation of the shield 8 about the axis of rotation X.

[0054] Additionally, the shield 8 is designed to move between an activated position and an intermediate position, or between a non-activated position and an intermediate position, in a manner similar to that disclosed above with respect to the prior art.

[0055] In the intermediate position, the shield 8 covers the front opening 4 and at least partially allows air flow in the interior space through the front opening 4 .

[0056] The shield 8 in an intermediate position is shown in FIGS. 6 and 8, and the air flow within the protective helmet 1 is indicated by arrows F.

[0057] In contrast to the actuated position in which the shield 8 is attached to the outer shell 2, in the intermediate position the shield 8 is detached from the outer shell 2 in a manner described below.

[0058] In the intermediate position, also known as the "city position" in technical terms, the rider can ride at a relatively slow speed (e.g., about 80 to 100 km / h) while still having the shield protecting his face and still have enough airflow to prevent the shield fogging up.

[0059] 1, 3a-3b, 5-6, and 7-8, the shield 8 is further provided with a front hole 12. In particular, the front hole 12 is formed on a protrusion 14 located on a lower edge 15 of the shield 8.

[0060] In the present context, the lower edge 15 of the shield 8 is intended as the edge of the outer shell 2 close to the chin guard 6 .

[0061] The protrusion 14 is adapted to be located in front of the outer shell 2, in particular in front of the chin guard 6, in the area below the front opening 4 when the shield 8 is in the operative or intermediate position, as best shown in Figures 5-8.

[0062] Additionally, protrusion 14 includes a bulge 17 disposed on its inner surface, as best seen in FIGS. 3b, 5-6, and 7-8.

[0063] In particular, as best shown in FIG. 3b, the bulge 17 is preferably formed on the steel member 11 and fixed to the inside of the protrusion 14 by hot / ultrasonic deformation or by riveting two pins 13 so that the bulge 17 is located below the front hole 12.

[0064] The protective helmet 1 further comprises a locking device 16 designed to lock the shield 8 in an operative position. The entire locking device 16 and all its components, which will be explained in more detail below, are better visualized in the exploded perspective view of FIG.

[0065] According to a particular feature of the invention, the locking device 16 is arranged on the outer shell 2 .

[0066] As particularly shown in Figures 1-2 and 5-6, the locking device 16 is disposed within a housing 20 formed in the chin guard 6 such that the protrusion 14 with the hole 12 is adapted to a forward position of the locking device 16 when the shield 8 is in the operative position.

[0067] The locking device 16 includes a rotatable engagement member 18 designed to engage the front aperture 12 of the shield 8 when the shield 8 is in the activated position.

[0068] In the intermediate position, as best shown in FIGS. 6 and 8, the projection 14 of the shield 8 is also located in front of the locking device 16, but the engagement member 18 is not engaged in the front hole 12.

[0069] Preferably, the engagement member 18 comprises an appendage 19 designed to engage in the front hole 12 when the shield 8 is in the operative position, and a body 22 rotatable about an axis of rotation Y.

[0070] Advantageously, the body 22 is provided on the opposite side with a pin 23, the axis of rotation Y of which is parallel to the axis of rotation X of the fixing means 10 described above.

[0071] As best shown in FIGS. 4-8, the rotatable body 22 also includes a molded bottom 24 and a rib 25 disposed between the appendage 19 and the molded bottom 24 .

[0072] The ribs 25 combine with the molded bottom 24 to define slots 26 extending along a direction parallel to the axis of rotation Y. The functions of the ribs 25 and the slots 26 will be explained in more detail below.

[0073] Furthermore, in the helmet embodiment shown in Figures 7 and 8, the rib 25 may further comprise a groove 29 located at the lower end of the rib 25, the function of which will also be explained in more detail below.

[0074] The locking device 16 further comprises a housing 28 secured to the outer shell 2, in particular the housing 28 being disposed within the housing 20 of the chin guard 6 disclosed above.

[0075] The engagement member 18, and in particular its appendage 19, at least partially protrudes from the housing 28, as shown in Figures 5-6 and 7-8.

[0076] In particular, as shown in Figures 5-6 and 7-8, the engagement member 18 at least partially protrudes from a front window portion 30 provided in the housing 28, and the front hole 12 of the shield 8 faces the front window portion 30 when the shield 8 is at least in the operative position, more specifically, when the shield 8 is in the operative position and an intermediate position.

[0077] Preferably, as best shown in FIG. 4, the housing 28 comprises an inner half-shell member 28A fixed to the shell 2, i.e., on the outer surface of the shell 2, and an outer half-shell member 28B fixed to the inner half-shell member 28A and facing outward.

[0078] Thus, in the assembled configuration, as shown in Figures 1 and 2, the only portion of housing 28 that is visible from the outside is outer half-shell member 28B.

[0079] The front window 30 disclosed above is formed in the outer half-shell member 28B, and the two half-shell members 28A, 28B may be joined therebetween by suitable connecting means 32, such as, for example, screws, as shown in Figures 4-6.

[0080] Additionally, the outer surface of the outer half-shell member 28B includes a protruding portion 34 located at the upper end 31 of the front window portion 30. The protruding portion 34 is best seen in FIGS.

[0081] Locking device 16 may further include a box-shaped member 36 disposed inside housing 28 and including at least a side wall 37 and an inner wall 40 that define a cavity 41. Box-shaped member 36 is better visualized in Figures 4-8.

[0082] In particular, the cavity 41 of the box-shaped member 36 is defined by a pair of side walls 37 , a top wall 38 , a bottom wall 39 , and an inner wall 40 .

[0083] Preferably, the box-shaped member 36 is positioned within the housing 28 such that the cavity 41 faces towards the outer half-shell member 28B.

[0084] With such an arrangement, the side walls 37 and inner wall 40 of the box-shaped member 36 extend in a substantially vertical plane, and the top wall 38 and bottom wall 39 extend in a substantially horizontal plane.

[0085] Such an arrangement must be intended with reference to the protective helmet 1 worn by the user.

[0086] The pin 23 of the body 22 is rotatably supported by a side wall 37 of the box-shaped member 36 , and the body 22 is at least partially disposed within a cavity 41 of the box-shaped member 36 .

[0087] Preferably, the locking device 16 further comprises resilient means 42 arranged within the housing 28, the function of which will be further explained below. These resilient means 42 are best seen in Figures 4 to 8.

[0088] In particular, the resilient means 42 are formed by at least one spring arranged within the box-shaped member 36 and having a vertical axis of extension V. In the embodiment shown in the figures, the resilient means 42 comprises a pair of springs 42.

[0089] The spring 42 has an upper end that abuts against the upper wall 38 of the box-shaped member 36, and a lower end that is similarly housed within a base member 44 that is disposed within the box-shaped member 36. The spring 42 and the base member 44 are best shown in Figures 4 to 8.

[0090] Further, in the embodiment shown in Figs. 4-6, the base member 44 has a bottom wall 46 with a first seat 48 and a second seat 49 facing the bottom wall 39 of the box-shaped member 36. In particular, the first seat 48 is formed on the bottom wall 46 at a position close to the inner wall 40 of the box-shaped member 36 in the assembled configuration, and the second seat 49 is formed on the bottom wall 46 at a position away from the inner wall 40 of the box-shaped member 36 in the assembled configuration. In the embodiment shown in Figs. 7 and 8, the base member 44 has a bottom wall 46 with the first seat 48, the second seat 49, and a third seat 51 interposed between the first seat 48 and the second seat 49.

[0091] The engagement member 18 is designed to be movable between an actuated configuration when the shield 8 is in an actuated position (see Figures 5 and 7) and an unactuated configuration when the shield 8 is in an intermediate position (see Figures 6 and 8).

[0092] Thus, when the engagement member 18 moves from the inoperative configuration to the operative configuration, the body 22 rotates downward about the rotation axis Y, and when the engagement member 18 moves from the operative configuration to the inoperative configuration, the body 22 rotates upward about the rotation axis Y.

[0093] As can be seen from Figures 5-6 and 7-8, in the activated configuration, the appendage 19 of the engagement member 18 is located lower than in the non-activated configuration, ie closer to the lower end of the projection 14 of the shield 8.

[0094] Whenever the shield 8 is in the operative and intermediate positions, the attachment 19 is accessible via the front hole 12, so that rotation of the body 22 is performed by the user by direct finger action on the attachment 19.

[0095] As shown in Figures 5 and 7, when the engagement member 18 is in the operative configuration, the underside of the appendage 19 abuts the lower end 33 of the front aperture 12 of the shield 8.

[0096] Furthermore, in this configuration: The bottom 24 of the main body 22 is in contact with the inside of the protrusion 14 and does not protrude from the lower end 35 of the front window portion 30 of the housing 28. The inner bulge 17 of the projection 14 is disposed within a slot 26 in the rotatable body 22 and the rib 25 abuts thereagainst when the shield 8 is in the operative position.

[0097] As shown in the embodiment of FIG. 6, when the engagement member 18 is in the inactivated configuration and the shield 8 is in the intermediate position, the upper surface of the appendage 19 abuts the outer surface of the housing 28, i.e., the protruding portion 34 thereof.

[0098] In the latter respect, the shape of the upper surface of appendage 19 and the shape of protruding portion 34 are substantially complementary.

[0099] Furthermore, in the intermediate position, the bottom 24 of the body 22 remains in contact with the inside of the protrusion 14 and protrudes from the lower end 35 of the front window portion 30, thereby maintaining the shield 8 separated and spaced from the outer shell 2 to provide an air passage within the interior space of the helmet 1.

[0100] Conveniently, in the first embodiment of Figures 5 and 6, the pin 23 of the rotatable body 22 supported by the side wall 37 of the box-shaped member 36 is positioned in a first seat 48 (see Figure 5) when the engagement member 18 is in an actuated configuration, and is positioned in a second seat 49 (see Figure 6) when the engagement member 18 is in a non-actuated configuration.

[0101] Thus, the pin 23 is designed to move from the first seat 48 to the second seat 49 upon rotation of the body 22 to move the engagement member 18 from the activated configuration to the unactivated configuration.

[0102] In the second embodiment of Figures 7 and 8, when the engagement member 18 is in the inoperative configuration and the shield 8 is in the intermediate position, a groove 29 formed in the rib 25 engages with the upper end of the bulge 17 (see Figure 8).

[0103] In this configuration, the protruding portion 34 and the bulge portion 17 stably hold the rotatable body 22, thereby preventing the rotatable body 22 from rotating inadvertently and preventing the shield 8 from floating up from the intermediate position.

[0104] At this point, rotation of the rotatable body 22 can only be performed by the user pulling up on the attachment 19 with their fingers to place the shield 8 in the inactivated position.

[0105] Further, in the second embodiment of Figures 7 and 8, the pin 23 of the rotatable body 22 is disposed in the first seat 48 (see Figure 7) when the engagement member 18 is in the actuated configuration, and is disposed in the third seat 51 (see Figure 8) when the engagement member 18 is in the non-actuated configuration.

[0106] When the user pulls up on the attachment 19 as described above, the pin 23 of the rotatable body 22 moves from the third seat 51 to the second seat 49 according to a configuration not shown in the figures.

[0107] Furthermore, in both embodiments, the resilient means 42 is designed to stably block the engagement member 18 in the actuated and unactuated configurations.

[0108] The above-described arrangement of the box-shaped member 36, the base member 44 and the resilient means 42 compressing the base member 44 downwardly against the pin 23 located in one of the seats 48, 49, 51 allows the engagement member 18 to be stably maintained in the operative and non-operative configurations.

[0109] Operationally, after putting on the protective helmet 1, the user can bring the shield 8 from the inoperative position to the intermediate position by rotating the shield 8 about an axis X passing through the fastening means 10.

[0110] As disclosed above, in the intermediate position, the front hole 12 of the shield 8 faces the front window 30 of the housing 28 through which the engagement member 18, i.e., the appendage 19, protrudes, thereby making the appendage 19 accessible from the outside (see Figures 6 and 8).

[0111] At this point, the user may push the attachment 19 downward, thereby causing the body 22 to rotate about the Y axis within the cavity 41 of the box-shaped member 36 to lock the engagement member 18 in the actuated configuration disclosed above (see Figures 5 and 7).

[0112] If the user wishes to place the shield 8 in the inactivated position again, the user must first pull the attachment 19 upwards until the engagement member 18 reaches the inactivated configuration, and then move the shield 8 from the intermediate position to the inactivated position.

[0113] It is clear how the present invention achieves its intended objectives.

[0114] As can be seen from the above description, the components of the locking device are all located on the outer shell, which allows to have a protective helmet with reduced manufacturing complexity.

[0115] Furthermore, the locking device configured as described above makes it possible to stably hold the shield in the operating position and the intermediate position without making the structure of the helmet particularly complicated.

[0116] Furthermore, the box-shaped member, base member and resilient means configured as disclosed above provide various support points for the rotatable body of the engagement member, thereby enabling the engagement member to be stably maintained in the actuated and non-actuated configurations.

[0117] With respect to the above-described embodiments of the protective helmet, those skilled in the art may make modifications to the described elements and / or replace the described elements with equivalent elements in order to meet their particular requirements, without departing from the scope of the appended claims.

Claims

1. A protective helmet (1) adapted to be worn by a user and to protect the head of said user against impacts, said protective helmet (1) comprising: a rigid outer shell (2) defining an interior space designed to accommodate the head of a user, the outer shell (2) having a front opening (4); a shield (8) removably coupled to the outer shell (2), the shield (8) being adapted to move at least between an operative position in which the shield (8) covers the front opening (4) and no air enters the interior space, and an inoperative position in which the interior space communicates with the outside via the front opening (4), the shield (8) being provided with a front hole (12); a locking device (16) designed to lock the shield (8) in the operative position, The protective helmet (1), characterized in that the locking device (16) comprises a rotatable engagement member (18) arranged on the outer shell (2) and designed to engage in the front hole (12) of the shield (8) when the shield (8) is in the operative position.

2. 2. The helmet (1) according to claim 1, characterized in that the engagement member (18) comprises a body (22) rotatable about a rotation axis (Y) and an appendage (19) designed to engage in the front hole (12) when the shield (8) is in the operative position.

3. 3. The helmet (1) according to claim 1 or 2, characterized in that the locking device (16) comprises a housing (28) fixed to the outer shell (2), and the rotatable engagement member (18) protrudes at least partially from the housing (28).

4. The helmet (1) according to claim 3, characterized in that the housing (28) is provided in a front window portion (30) in which the engagement member (18) protrudes from the front hole (12) of the shield (8) facing the front window portion (30) when the shield (8) is in at least the operative position.

5. 5. The helmet (1) according to claim 4, characterized in that the housing (28) comprises an inner half-shell member (28A) fixed on the outer shell (2) and an outer half-shell member (28B) fixed on the inner half-shell member (28A) and facing outward, the front window portion (30) being formed on the outer half-shell member (28B).

6. 6. A helmet (1) according to any one of the preceding claims, characterized in that the shield (8) is designed to move between the operative position and an intermediate position or between the inoperative position and the intermediate position, the shield (8) covering the front opening (4) and, in the intermediate position, partially allowing air to flow in the interior space.

7. 7. The helmet (1) according to claim 6, characterized in that the engagement member (18) is designed to move between an activated configuration when the shield (8) is in the activated position and a non-activated configuration when the shield (8) is in the intermediate position.

8. 8. Helmet (1) according to claim 7, characterized in that in said activated configuration, said lower surface of said appendage (19) abuts against said lower end (33) of said front hole (12).

9. 9. Helmet (1) according to claim 8, characterized in that in the inactivated configuration, the upper surface of the appendage (19) abuts the outer surface of the housing (28).

10. A helmet (1) according to claim 7 dependent on claim 2, characterized in that when the engagement member (18) moves from the inactivated configuration to the activated configuration, the body (22) rotates downwardly about the rotation axis (Y), and when the engagement member (18) moves from the activated configuration to the inactivated configuration, the body (22) rotates upwardly about the rotation axis (Y).

11. Helmet (1) according to claim 7, characterized in that the locking device (16) comprises resilient means (42) for stably blocking the engagement member (18) in the activated and in the inactivated configurations.

12. 8. Helmet (1) according to claim 7, characterized in that the locking device (16) comprises a box-shaped member (36) arranged inside the housing (28) and including at least a side wall (37) and an inner wall (40) defining a cavity (41).

13. 13. The helmet (1) according to claim 12, characterized in that the rotatable body (22) has a pin (23) on each side that is rotatably supported by the side walls (37) of the box-shaped member (36), and the rotatable body (22) is at least partially arranged within the cavity (41).

14. 14. The helmet (1) according to claim 13, characterized in that the locking device (16) comprises resilient means (42) for stably blocking the engagement member (18) in the activated and in the inactivated configurations, the resilient means (42) comprising one or more springs (42) arranged in the box-shaped member (36), the springs (42) having a lower end housed in a base member (44) arranged in the box-shaped member (36).

15. 15. The helmet (1) according to claim 14, characterized in that the base member (44) has a bottom wall (46) with a first seat (48) and a second seat (49), and the pin (23) of the rotatable body (22) is disposed in the first seat (48) when the engagement member (18) is in the activated configuration and in the second seat (49) when the engagement member (18) is in the non-activated configuration.

16. 15. The helmet (1) according to claim 14, characterized in that the base member (44) has a bottom wall (46) with a first seat (48), a second seat (49) and a third seat (51) interposed between the first seat (48) and the second seat (49), and the pin (23) of the rotatable body (22) is disposed in the first seat (48) when the engagement member (18) is in the activated configuration and is disposed in the third seat (51) when the engagement member (18) is in the inactivated configuration.

17. 8. Helmet (1) according to claims 2 and 7, characterized in that the rotatable body (22) comprises a rib (25) which delimits a slot (26), and the front hole (12) of the shield (8) formed over a projection (14) comprises an inner bulge (17) arranged in the slot (26) with the rib (25) abutting thereagainst when the shield (8) is in the operative position.

18. 18. The helmet (1) according to claim 17, characterized in that the rib (25) comprises a groove (29) located at the lower end of the rib (25), the groove (29) engaging with the upper end of the bulge (17) when the engagement member (18) is in the inactivated configuration.

Images