Hard hat having an articulated cheek plate

Abstract

The invention describes a hard hat designed to be worn by an individual, comprising: - a crown (10); - a visor (20) designed to protect a region of a face of the individual; - a cheek plate (30) designed to be moved between a retracted position and a protective position in which the cheek plate (30) is arranged at least partially around the visor (20); - an articulation system (50) for articulating the cheek plate (30) with respect to the crown (10), comprising means for guiding a movement of the cheek plate (30), and clamping means (90) designed to clamp the cheek plate (30) against the visor (20) when the cheek plate (30) is close to or in the protective position.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a safety helmet, or protective helmet, of the PPE (personal protective equipment) type comprising a beard articulated according to a beard kinematics. STATE OF THE ART

[0002] Safety helmets are used, for example, by electricians. Safety helmets must protect their wearer from external shocks or physical attacks, similar to construction helmets. In addition, safety helmets must provide protection against short circuits. Such short circuits can generate a more or less significant electric arc, manifesting itself, for example, in the form of sudden and intense light, projections of molten particles, blast effects, etc.

[0003] A safety helmet typically comprises a cap protecting the wearer's skull and a shield protecting part of the wearer's face, see for example US 10,136,693.

[0004] The shield can be mounted on the shell so as to be movable between a raised position in which the shield is retracted to expose the face of the helmet wearer and a lowered position in which the shield is arranged opposite the face of the wearer. Thus, a user wearing the helmet can choose to protect his face or retract the shield when desired.

[0005] The shapes of the visor and the shell are generally different. Indeed, the shape of the visor is constrained in particular by optical quality requirements, while the shape of the shell is constrained in particular by mechanical considerations (for example, impact resistance), normative considerations, and aesthetic considerations (concerning the external shape of the helmet). In a first type of safety helmet, the visor is mounted in a position more external than the helmet shell, and is movable between the raised position and the lowered position by means of a sliding movement of the visor on the helmet shell or by an articulation movement. This first type of helmet is not very constrained in terms of the shapes of the visor and the shell, but the visor is exposed to scratches and other external aggressions, and the size of the helmet is significant.

[0006] In a second type of safety helmet, the screen in the raised position is located between the crown and the head of the helmet wearer, the screen being eclipsed inside the helmet, in a position more internal than the crown. This second type of helmet protects the screen from scratches and other external aggressions when the helmet is not worn, its lifespan being increased. The bulk of this second type of helmet is also reduced. On the other hand, eclipsing the screen inside the helmet leads to shape constraints, in particular the shape of the screen and the crown. The shape constraints of the helmet crown are linked to the shape constraints of the screen, and the shape constraints of the screen are closely linked to the desired optical quality requirements.

[0007] This second type of helmet, however, requires an adaptation of the shapes of the screen and the shell, as well as the kinematics of the screen's movement, given the potentially different shapes of the screen and the shell, in order to allow the screen to disappear inside the helmet.

[0008] The screen does not protect the wearer's entire face, particularly the sides of the face and the chin of the helmet wearer. Indeed, the dimensions of the screen are limited, particularly in the second type of helmet due to its retraction inside the helmet. Therefore, the screen alone does not provide a satisfactory level of protection, particularly when it comes to protecting the wearer against short circuits.

[0009] Some current safety helmets offer additional protective features intended to provide protection to the sides of the face and / or chin of the helmet wearer's face, particularly protection against short circuits.

[0010] For example, an additional protective fabric element, such as a balaclava, can be worn under the helmet or attached to a movable element such as the helmet visor. The balaclava protects the wearer's chin and the sides of the face. However, using fabric has disadvantages because it gets dirty, is difficult to clean, and can harbor many microbes and bacteria.

[0011] Some current helmets offer the option of attaching an additional protective element to the screen, under the screen, to protect, in particular, an area of ​​the helmet wearer's chin. The assembly formed by the additional protective element and the screen can then be raised or lowered by the helmet wearer. However, the weight of the assembly to be moved by the helmet wearer between the raised and lowered position is then significant. Furthermore, in the event of a short circuit, the blast could potentially enter the space between the screen and the helmet. Consequently, the protection provided by these helmets is not optimal. STATEMENT OF THE INVENTION

[0012] An aim of the invention is to provide a safety helmet comprising a beard articulated between a retracted position and a protective position.

[0013] Another aim of the invention is to provide a safety helmet making it possible to improve the protection of the face of the wearer of the helmet, in particular against short circuits.

[0014] According to a first aspect, the invention relates to a safety helmet adapted to be worn by an individual, comprising: a cap configured to receive a skull of the individual; a screen adapted to protect an area of ​​a face of the individual; a beard adapted to be moved between a retracted position and a protective position, wherein in the protective position, the beard is arranged at least partially around the screen so as to extend the area of ​​protection of the face of the individual by the helmet; a system for articulating the beard relative to the cap, comprising means for guiding a movement of the beard between the retracted position and the protective position, the safety helmet being characterized in that the articulation system further comprises means for pressing the beard against the screen adapted to press the beard against the screen when the beard is close to or in the protective position.

[0015] Some preferred but not limiting features of the safety helmet described above are the following, taken individually or in combination: the clamping means of the articulation system comprise elastic clamping means adapted to exert a restoring force tending to clamp the barb against the screen and / or means for clipping the barb against the screen; the clamping means of the articulation system comprise a spring adapted to exert on the barb a restoring force tending to clamp the barb against the screen when the barb is close to or in the protection position; the guiding means of the articulation system comprise a guiding slot and the barb comprises a guiding pin adapted to slide inside the guiding slot so as to guide a controlled movement of the barb between the retracted and protection positions;the guide slot comprises: a first portion adapted to guide a sliding of the barb between the retracted position and a first intermediate position, a second portion adapted to guide a tilting of the barb between the first intermediate position and a second intermediate position, in which in the second intermediate position, the barb is positioned at least partially around the screen and at a distance from the screen, and a third portion adapted to guide a pressing of the barb against the screen between the second intermediate position and the protection position;the guide slot has substantially a cane shape, the first portion and the third portion of the guide slot being arranged at a distance from each other and extending mainly in a longitudinal direction of the helmet, and the second portion of the guide slot being curved and connecting the first portion and the third portion of the guide slot;the articulation system comprises an additional guide slot having dimensions substantially similar to the dimensions of the first portion of the guide slot, the additional guide slot extending mainly in a longitudinal direction of the helmet and being arranged substantially in an extension of the third portion of the guide slot at a distance from the third portion of the guide slot, and the beard comprises an additional guide pin adapted to slide inside the additional guide slot when the beard is moved between the retracted and protected positions;the first portion of the guide slot comprises a rear end adapted to form a stop for the guide pin when the barb is in the retracted position, and the third portion of the guide slot comprises a rear end adapted to form a stop for the guide pin when the barb is in the protective position; and the additional guide slot comprises a rear end adapted to form a stop for the additional guide pin when the barb is in the retracted position, and a front end adapted to form a stop for the additional guide pin when the barb is tilted between the first intermediate position and the second intermediate position, the tilting of the barb being done around the additional guide pin;the guide means of the articulation system further comprise a connecting rod adapted to be attached and fixed to the guide pin and to the additional guide pin. the connecting rod is adapted to stress the pressing means during a movement of the beard between the first intermediate position and the second intermediate position; the screen is adapted to be moved between a lowered position in which the screen protects a part of the face of the individual wearing the helmet, and a raised position in which the screen is eclipsed so as to expose the face of the individual wearing the helmet; the system for articulating the beard relative to the cap is adapted to allow a controlled movement of the beard between the protection position and the retracted position independently of a movement of the screen between the lowered position and the raised position. ; DESCRIPTION OF FIGURES

[0016] Other characteristics, aims and advantages of the present invention will appear on reading the detailed description which follows, given by way of non-limiting example, which will be illustrated by the following figures: [ Fig. 1a ] [ Fig. 1b ] THE Figures 1a And 1b represent schematic exploded views, respectively in perspective and from the side, of a safety helmet according to one embodiment of the invention. Fig. 2] [Fig. 3 ] [ Fig. 4] [Fig. 5 ] THE figures 2 to 5 represent schematic side views of a safety helmet according to one embodiment of the invention, the beard being respectively in the withdrawn position, in a first intermediate position, in a position between the first intermediate position and the second intermediate position, and in the protective position. Fig. 6 ] There figure 6represents a schematic side view of a safety helmet according to one embodiment of the invention, the beard apart from its guide pins being hidden to reveal the articulation system. Fig. 7] [Fig. 8 ] THE figures 7 and 8 represent schematic perspective views of a safety helmet according to an embodiment of the invention, during a displacement of the beard in the absence of plating of the beard. [ Fig. 9a] [Fig. 9b ] THE Figures 9a and 9b respectively represent an exploded perspective view and a perspective view of an articulation system according to an embodiment of the invention, as well as beard pins of a beard in the first intermediate position. Fig. 10 ] There figure 10 represents a perspective sectional view of the articulation system and the beard pins according to the Figures 9a and 9b . [ Fig. 11a] [Fig. 11b ] [ Fig. 11c] [Fig. 11d ] THE Figures 11a, 11b , 11c and 11drepresent schematic sectional side views of an articulation system according to an embodiment of the invention, for a beard respectively in the first intermediate position, in a position between the first intermediate position and the second intermediate position, in the second intermediate position, and in the retracted position. DETAILED DESCRIPTION OF THE INVENTION

[0017] A safety helmet is illustrated by way of non-limiting example in Figures 1a , 1b , And 2 has 8 The safety helmet includes: a cap 10 configured to receive a skull of the individual; a screen 20 adapted to protect an area of ​​a face of the individual; a beard 30 adapted to be moved between a retracted position and a protective position, in which in the protective position, the beard 30 is arranged at least partially around the screen 20 so as to extend the area of ​​protection of the face of the individual by the helmet; an articulation system 50 of the beard 30 relative to the cap 10, comprising means for guiding a movement of the beard 30 between the retracted position and the protective position.

[0018] The articulation system 50 makes it possible to ensure the docking of the barb 30 on the screen 20. The articulation system 50 further comprises means 90 for pressing the barb 30 against the screen 20 adapted to press the barb 30 against the screen 20 when the barb 30 is close to or in the protection position.

[0019] The beard 30 is articulated relative to the cap 10 by means of the articulation system 50. The presence of the movable beard 30 between a retracted position and a protective position makes it possible, when the beard 30 is in the protective position, to enlarge the extent of the protection zone of the face of the wearer of the helmet. In the protective position, the beard 30 arranged around the screen 20 makes it possible to provide peripheral protection to the protection offered by the screen 20. The beard 30 can in particular extend laterally around the screen 20 so as to cover sides of the face, and / or an area of ​​the chin of the wearer of the helmet. The beard 30 thus increases the level of protection by enlarging the face area protected by the helmet, and allows more effective facial and lateral protection, in particular against short circuits.

[0020] The pressing of the beard 30 against the screen 20 in the protective position ensures continuity of the protection of the face of the wearer of the helmet provided by the beard 30 and the screen 20. Thus, there is no unprotected area between the area protected by the screen 20 and the area protected by the beard 30.

[0021] The cap 10, the screen 20 and the beard 30 may be arranged so as to continuously cover a space near a head of the wearer. Thus, continuity of protection is ensured between the cap 10 protecting the skull, the screen 20 protecting an area of ​​the face, and the beard 30 providing protection of the face which is peripheral to the protection offered by the screen 20.

[0022] Pressing the beard 30 against the screen 20 also ensures that the beard 30 is properly positioned against and around the screen 20 in the protective position. In addition, pressing the beard 30 against the screen 20 secures the positioning of the beard 30 in the protective position by limiting the risk of the beard 30 moving when it is in the protective position. Thus, the protection provided by the helmet is improved.

[0023] A space may be provided between the beard 30 and the cap 10 when the beard 30 is moved between the retracted position and the protective position, when the beard 30 is not pressed against the screen 20. Thus, an element, for example a lamp, may be positioned on the cap 10, without the risk of being struck by the beard 30 when it is moved between the retracted and protective positions. General definitions

[0024] The cap 10 may be substantially symmetrical with respect to a plane of symmetry.

[0025] A longitudinal direction at a given point on the helmet is defined by an intersection between a plane parallel to the plane of symmetry and the cap 10 at the given point.

[0026] The terms front and rear are used so that when the helmet is worn by an individual, a rear portion of an element is closer to the back of the individual's skull and neck than a front portion of the same element, the front portion being closer to the individual's face.

[0027] The terms internal and external are used so that when the helmet is worn by an individual, an internal part of an element is closer to the head of an individual wearing the helmet than an external part of the same element. Cap

[0028] The cap 10 is adapted to receive the wearer's skull. In particular, the cap 10 can envelop the wearer's skull from the top of the wearer's forehead to the base of the wearer's neck.

[0029] The cap 10 constitutes the general external shape of the safety helmet, and may comply with standards (for example, the EN 397 standard). The cap 10 may have a complex shape. The shape of the cap 10 may be adapted to accommodate the wearer's skull, while respecting mechanical constraints, for example impact resistance, normative constraints, and aesthetic constraints which impact the external shape of the safety helmet.

[0030] The cap 10 may be formed entirely from a single piece, or be made up of several pieces attached to each other.

[0031] The skullcap 10 includes a front portion adapted to be located near the wearer's forehead and a rear portion located near the nape of the wearer's neck when the skullcap 10 is worn by an individual. The front portion of the skullcap 10 may extend from the top of the wearer's forehead to near the top of the wearer's head. The rear portion of the skullcap 10 may extend from near the top of the wearer's head to the nape of the wearer's neck.

[0032] The front portion of the cap 10 may have a front edge, delimiting the end of the cap 10 which is located close to the wearer's forehead.

[0033] The helmet may comprise an internal cap 60 adapted to be arranged opposite the cap 10, in a position more internal than the cap 10. The cap 10 may be fixed to the internal cap 60, for example by screwing.

[0034] The helmet may further comprise a harness 70 adapted to be placed in contact with the skull of the wearer of the helmet, between the wearer's head and the cap 10, where appropriate between the wearer's head and the internal cap 60. The harness 70 ensures the comfort of the wearer of the helmet and makes it possible to absorb shocks.

[0035] The cap 10, and / or where appropriate the internal cap 60, may be formed from a hard material with a smooth finish such as a thermoplastic material, such as ABS, PA, PP, or any other conceivable material. Screen

[0036] The screen 20 may have dimensions adapted to protect a portion of the wearer's face including one or more areas among the forehead, eyes, nose, and / or mouth.

[0037] The screen 20 may be made of a material that does not impede the wearer's vision, for example a transparent, smoked or colored material. The material of the screen 20 may meet optical requirement criteria defined in a standard (standard EN 166 for example), and be a material that is impact-resistant in a temperature range also defined by a standard (standard EN 166 for example). For example, the screen 20 may be formed from a polymer material, such as polycarbonate.

[0038] The screen 20 may be of a substantially curved shape. The screen 20 may have a substantially bubble shape, a spherical shape, a toric shape, an elliptical shape or any other conceivable shape to ensure protection of a portion of the wearer's face while ensuring a level of optical quality meeting the standard (standard EN 16 for example).

[0039] The screen 20 may further comprise a screen support 21 secured to the screen 20 and forming a skeleton 21 at least partially surrounding the screen 20. The screen 20 may be placed in position relative to the screen support 21, for example by clipping, gluing, fitting, plastic screws, or by any other conceivable means.

[0040] The screen 20 can serve as a stop for the beard 30 when the beard 30 is pressed against the screen 20. More particularly, the screen support 21 can act as a stop for the beard 30 when the beard 30 is pressed against the screen 20 in the protection position.

[0041] The shield 20 may be adapted to be moved between a lowered position in which the shield 20 shields a portion of the face of the individual wearing the helmet, and a raised position in which the shield 20 is eclipsed so as to expose the face of the individual wearing the helmet. figures 2 to 8illustrate by way of non-limiting examples safety helmets comprising a screen 20, the screen 20 being in the lowered position.

[0042] In the lowered position, the screen 20 can be arranged opposite the face of the individual wearing the helmet, in front of the face of the wearer, in order to protect the face of the wearer of the helmet. In the raised position, the screen 20 can be arranged opposite the skull of the wearer of the helmet and the cap 10, if necessary opposite the skull of the wearer of the helmet and the internal cap 60, so as to minimize the size of the helmet.

[0043] In the raised position, the screen 20 may be arranged at the level of the cap 10, in a position adjacent to the cap 10. The screen 20 may have a curvature close to the curvature of the cap 10 and / or the curvature of the internal cap 60 so as to minimize the bulk of the safety helmet when the screen 20 is arranged opposite the cap 10 in the raised position.

[0044] In the raised position, the screen 20 may be eclipsed between the cap 10 and the head of the wearer of the helmet, the screen 20 being located in a more internal position than the cap 10. If necessary, the screen 20 may be eclipsed between the cap 10 and the internal cap 60. The cap 10 and the internal cap 60 may serve as a guide for a controlled movement of the screen 20 between the cap 10 and the internal cap 60. Alternatively, the screen 20 may be eclipsed in an external position relative to the cap 10 of the helmet.

[0045] In the lowered position, the shield 20 may extend from the front edge of the front portion of the cap 10. Thus, continuity of protection is ensured between the face protection provided by the shield 20 and the beard 30, and the skull protection provided by the cap 10.

[0046] The screen support 21 may incorporate on its lower part a “beak” shape having the role of increasing the protection provided by the screen 20 at the lower part of the wearer's face when the screen 20 is in the lowered position, and of serving as a visor for the wearer of the helmet when the screen 20 is in the raised position. Beard

[0047] The beard 30 may have dimensions adapted to protect a portion of the wearer's face including one or more areas of the cheeks, ears, mouth and / or chin. The beard 30 may further have dimensions adapted to protect a portion or all of the helmet wearer's neck.

[0048] In the protective position, the beard 30 can be arranged facing the face of the individual wearing the helmet, in front of the face of the wearer, in order to protect the face of the wearer of the helmet. In the retracted position, the beard 30 can be arranged facing the skull of the wearer of the helmet and the cap 10, so as to minimize the bulk of the helmet.

[0049] When the beard 30 is in the retracted position, the beard 30 can be eclipsed and arranged at the level of the cap 10, in a position adjacent to the cap 10, or even in contact with the cap 10. The shapes and dimensions of the beard 30, in particular a curvature of the beard 30, can be chosen so as to allow a shape cooperation between the beard 30 and the cap 10 so that when the beard 30 is arranged opposite the cap 10, the size of the safety helmet is minimized.

[0050] When the beard 30 is in the protective position, the beard 30 may have dimensions adapted to ensure the protection of the entire part of the wearer's face which is not protected by the screen 20 when the beard 30 is in the protective position. Thus, the entirety of the wearer's face is protected against potential external attacks and the consequences linked to short circuits.

[0051] When the beard 30 is in the protective position and the shield 20 is in the lowered position, the beard 30 may be located in a more external position than the shield 20 relative to the face of the wearer of the helmet, the beard 30 being pressed against the shield 20 at the front of the shield 20.

[0052] The movement of the beard 30 between the protective position and the retracted position may be independent of the movement of the screen 20 between the lowered position and the raised position. More particularly, the articulation system 50 of the beard 30 relative to the cap 10 may be adapted to allow a controlled movement of the beard 30 between the protective position and the retracted position independently of a movement of the screen 20 between the lowered position and the raised position. This independence of movements allows the wearer of the helmet to adapt the size of the area of ​​his face protected by the helmet according to the situation. For example, the wearer of the helmet can move the screen 20 from the raised position to the lowered position, so as to ensure the protection of an area of ​​the face by the screen 20, the beard 30 remaining fixed, for example in the retracted position.

[0053] The barb 30 may be formed from a thermoplastic material, such as ABS, PA, PP or any other conceivable material.

[0054] The beard 30 may be formed from a transparent material. A transparent beard 30 increases the visual field of the helmet wearer. Articulation system

[0055] The articulation system 50 may comprise a housing 56 adapted to be attached and fixed to the cap 10. The housing 56 may have an internal surface adapted to be attached and fixed to an external surface of the cap 10. The housing 56 has an external surface opposite the internal surface, and lateral surfaces adapted to connect the internal and external surfaces of the housing 56. A housing space 56 is thus provided between the surfaces of the housing 56. The internal surface of the housing 56 may have shapes substantially complementary to the shapes of a zone of the external surface of the cap 10 at which the housing 56 is intended to be attached and fixed, so as to match the shapes of the cap 10.

[0056] The housing 56 can be fixed on the cap 10 by means of clipping the housing 56 onto the cap 10. The housing 56 and the cap 10 can comprise respective clipping means adapted to allow clipping of the housing 56 onto the cap 10, for example by means of clipping a clipping tab of the housing 56 into a slot in the cap 10. Thus, the housing 56 can be unclipped from the cap 10, for example to change the housing 56, or to change or temporarily remove the barb 30.

[0057] The housing 56 and the barb 30 may comprise respective elements adapted to cooperate when the barb 30 is in the retracted position, so as to ensure maintenance of the barb 30 in the retracted position.

[0058] For example, as illustrated in figure 6, a recess 55 may be formed in the outer surface of the housing 56 and the barb 30 may include a projection of a shape complementary to the shape of the recess 55 of the housing 56. The projection of the barb 30 and the recess 55 of the housing 56 are positioned such that when the barb 30 is in the retracted position, the projection of the barb 30 is positioned in the recess 55 of the housing 56.

[0059] Thus, the barb 30 is not likely to be displaced from the retracted position, simply by the effect of gravity or an external disturbance. On the other hand, the cooperation of the recess 55 of the housing 56 and the projection of the barb 30 does not prevent a displacement of the barb 30 between the retracted position and the protection position when a corresponding force is applied by the operator, said force being adapted to cause the projection of the barb 30 to come out of the recess 55 of the housing 56.

[0060] Alternatively, the barb 30 may comprise a recess and the housing 56 may comprise a projection, the recess and the projection being adapted to cooperate so as to ensure that the barb 30 is held in the retracted position.

[0061] The helmet may comprise two articulation systems, arranged on respective sides of the cap 10, on either side of the plane of symmetry of the cap 10, in a substantially symmetrical manner with respect to the plane of symmetry. The two articulation systems may be substantially identical and symmetrical. Consequently, only one articulation system 50 will be described below.

[0062] The articulation system 50 may be formed from a thermoplastic material, such as ABS, PA, PP, or any other conceivable material. Guidance means

[0063] The guide means of the articulation system 50 are adapted to guide the movement of the beard 30 between the protection and withdrawal positions.

[0064] The guide means of the articulation system 50 may comprise one or more guide slots. The barb 30 comprises one or more guide pins 31 adapted to slide inside the respective guide slot(s) so as to guide a controlled movement of the barb 30 between the retracted and protected positions.

[0065] The guide slot may be a through slot formed in the housing 56 of the articulation system 50, in particular in the outer surface of the housing 56 of the articulation system 50. The guide slot may have a complex three-dimensional profile. The sliding of the guide pin 31 in the guide slot is carried out according to the three-dimensional profile of the guide slot.

[0066] The guide slot has a first end 511 and a second end 532 opposite the first end 511. Between its first end 511 and its second end 532, i.e. along the guide slot, a direction and / or a curvature of the guide slot is likely to vary.

[0067] The guide slot has a length corresponding to a curvilinear distance between the first end 511 and the second end 532 of the slot.

[0068] The slot has a thickness corresponding to a dimension of the slot, at a given point of the slot, in a direction perpendicular to a plane tangent to the external surface of the housing 56. The thickness of the slot corresponds, when the slot is through, to a thickness of the housing 56 of the articulation system 50, in particular to a thickness of the external surface of the housing 56. The thickness of the slot can be substantially constant along the slot.

[0069] The slot has a width corresponding to a dimension of the slot, at a given point in the slot, in a direction substantially perpendicular to both the thickness direction and the length direction of the slot at the given point in the slot. The width of the slot may be substantially constant along the slot.

[0070] The guide pin 31 may be formed in one piece with the barb 30, or be attached and fixed to the barb 30. The guide pin 31 may have contours approaching the shape of the guide slot. In particular, the guide pin 31 may have a width substantially less than the width of the slot and a thickness substantially greater than the thickness of the slot. The guide pin 31 may have a substantially cylindrical shape. Alternatively, the guide pin 31 may have any other shape suitable for sliding in the guide slot, for example a T-shape. The guide pin 31 may for example be a screw or a nail.

[0071] The barb 30 may comprise a rotating ring arranged around the guide pin 31. The rotating ring may be substantially circular and arranged around the substantially cylindrical guide pin 31. A diameter of the rotating ring may correspond substantially to a width of the guide slot such that the rotating ring is in contact with the guide slot and rolls in the guide slot when the guide pin 31 slides in the guide slot. The rotation of the ring in the guide slot is adapted to reduce friction so as to facilitate the sliding of the guide pin 31 in the slot.

[0072] The beard 30 can be positioned and articulated relative to the safety helmet by means of the articulation system 50. In particular, the beard 30 can be positioned relative to the guide slot by means of its guide pin 31.

[0073] The guide slot may include: a first portion 51 adapted to guide a sliding of the barb 30 between the retracted position and a first intermediate position, a second portion 52 adapted to guide a tilting of the barb 30 between the first intermediate position and a second intermediate position, in which in the second intermediate position, the barb 30 is positioned at least partially around the screen 20 and at a distance from the screen 20, and a third portion 53 adapted to guide a pressing of the barb 30 against the screen 20 between the second intermediate position and the protection position.

[0074] The first portion 51 of the guide slot may extend mainly in the longitudinal direction at a zone of the cap 10 on which the articulation system 50 is arranged.

[0075] The first end 511 of the guide slot corresponds to a rear end of the first portion 51 of the guide slot. The rear end 511 of the first portion 51 of the guide slot may be adapted to form a stop for the guide pin 31 when the barb 30 is in the retracted position, so as to limit a movement of the barb 30 towards the rear.

[0076] The second portion 52 of the guide slot may be adapted to connect the first portion 51 and the third portion 53, and may have a curvature adapted to allow tilting of the barb 30 when sliding the guide pin 31 in the second portion 52 of the slot. The second portion 52 of the guide slot may be located at least partially in a position further forward than the first portion 51 of the guide slot and than the third portion 53 of the guide slot.

[0077] The third portion 53 of the guide slot may extend mainly in the longitudinal direction at a zone of the cap 10 on which the articulation system 50 is arranged. The third portion 53 of the guide slot may be arranged at a distance from the first portion 51 of the guide slot.

[0078] The second end 532 of the guide slot corresponds to a rear end of the third portion 53 of the guide slot. The rear end 532 of the third portion 53 of the guide slot may be adapted to form a stop for the guide pin 31 when the barb 30 is in the protective position, so as to limit a rearward movement of the barb 30. Alternatively or additionally, the barb 30 in the protective position may abut against the screen 20.

[0079] The first portion 51 of the guide slot may have dimensions greater than the third portion 53 of the guide slot. Thus, an amplitude of the sliding movement of the barb 30 between the retracted position and the first intermediate position is greater than an amplitude of the pressing movement of the barb 30 against the screen 20 between the second intermediate position and the protection position.

[0080] The guide slot may have a substantially cane shape, the first portion 51 and the third portion 53 of the guide slot being arranged at a distance from each other and extending mainly in a longitudinal direction of the helmet, and the second portion 52 of the guide slot being curved and connecting the first portion 51 and the third portion 53 of the guide slot.

[0081] The sliding of the barb 30 from the retracted position to the first intermediate position may correspond to a movement of the barb 30 from the rear part of the cap 10 to the front part of the cap 10. The guide pin 31 slides in the first slot portion 51, from its rear end 511 which corresponds to the first end of the guide slot and towards the front.

[0082] The sliding of the barb 30 from the first intermediate position to the retracted position may correspond substantially to the inverse movement of the movement of the barb 30 from the retracted position to the first intermediate position, the guide pin 31 being moved in the first slot portion 51 towards the rear until reaching the rear end 511 against which it comes into abutment so as to limit a movement of the barb 30 towards the rear.

[0083] In the first intermediate position, the beard 30 is thus located in a more forward position than in the retracted position. figure 2 illustrates by way of non-limiting example a helmet comprising a beard 30 in the withdrawn position. The figure 3 illustrates by way of non-limiting example a helmet comprising a beard 30 in the first intermediate position.

[0084] In the first intermediate position, the beard 30 can be arranged opposite the cap 10, in an external position relative to the cap 10 and close to the cap 10, so as to minimize the size of the helmet. The sliding of the beard 30 between the retracted position and the first intermediate position can correspond substantially to a translation without modification of an orientation of the beard 30, so that the beard 30 remains arranged opposite the cap 10 during its sliding between the retracted position and the first intermediate position.

[0085] During said sliding of the beard 30 between the retracted position and the first intermediate position, the pressing means 90 may not press the beard 30 against the helmet. Thus, the beard 30 is arranged at a distance from the cap 10 sufficient to allow the movement of the beard 30 without striking any elements arranged on the top of the cap 10, while being at a sufficiently small distance from the cap 10 to reduce the size of the helmet.

[0086] The beard 30 can be moved between the retracted position and the first intermediate position by means of a force exerted on the beard 30 by the wearer of the helmet, backward for movement to the retracted position and forward for movement to the first intermediate position.

[0087] In the second intermediate position, the beard 30 can be arranged substantially opposite the face of the individual wearing the helmet, in front of the wearer's face, at a distance from the face greater than that of the beard 30 in the protective position. The tilting of the beard 30 from the first intermediate position to the second intermediate position therefore comprises a tilting of the beard 30 from an orientation opposite the cap 10 to an orientation opposite the wearer's face, and vice versa.

[0088] When the barb 30 moves between the first intermediate position and the second intermediate position, the guide pin 31 slides in the second slot portion 52.

[0089] The beard 30 may further comprise a stop pin adapted to come into abutment against the articulation system 50, in particular against the housing 56 of the articulation system 50, so as to limit tilting of the beard 30 when moving the beard between the retracted position and the protection position.

[0090] The stop pin can in particular prevent the beard 30 from tilting beyond the orientation facing the cap 10 during its movement from the second intermediate position to the first intermediate position. The housing 56 of the articulation system 50 then forms a stop for the stop pin of the beard 30 when the beard 30 reaches the first intermediate position. Thus, the beard 30 is held close to the cap 10, facing the cap 10, during its movement between the first intermediate position and the retracted position, which makes it possible to limit the size of the helmet.

[0091] There figure 4 illustrates by way of non-limiting example a helmet comprising a beard 30 in a position between the first intermediate position and the second intermediate position.

[0092] There figure 6 illustrates by way of non-limiting example a helmet comprising a beard 30 (not shown except for its guide pins 31, 32) in a position between the first intermediate position and the second intermediate position.

[0093] The beard 30 can be moved between the first intermediate position and the second intermediate position by means of a force exerted on the beard 30 by the wearer of the helmet.

[0094] The pressing of the beard 30 from the second intermediate position towards the protection position may correspond to a movement of the beard 30 from the front towards the rear tending to bring the beard 30 closer to the wearer's face and adapted to press the beard 30 against the protection screen 20. The guide pin 31 slides in the third slot portion 53, from the front and towards its rear end 532 which corresponds to the second end of the guide slot.

[0095] The sliding of the barb 30 from the protective position to the second intermediate position may correspond substantially to the inverse movement of the movement of the barb 30 from the second intermediate position to the protective position, the guide pin 31 being moved in the third slot portion 53 forward from the rear end 532 of the third slot portion 53.

[0096] In the second intermediate position, the beard 30 is thus located in a more forward position than in the protective position. Figure 5 illustrates by way of non-limiting example a helmet comprising a beard 30 in the protective position.

[0097] The pressing of the beard 30 between the second intermediate position and the protection position may correspond substantially to a translation without modification of an orientation of the beard 30, so that the beard 30 is arranged during said pressing in front of and facing the face of the wearer of the helmet.

[0098] The articulation system 50 may comprise an additional guide slot 54 having dimensions substantially similar to the dimensions of the first portion 51 of the guide slot. The additional guide slot 54 extends mainly in a longitudinal direction of the helmet.

[0099] The additional guide slot 54 may be arranged substantially in an extension of the third portion 53 of the guide slot at a distance from the third portion 53 of the guide slot, the guide slot and the additional guide slot 54 not being connected.

[0100] The barb 30 includes an additional guide pin 32, adapted to slide within the additional guide slot 54 when the barb 30 is moved between the retracted and protected positions.

[0101] Thus, when moving the barb 30 between the retracted and protected positions, the guide pin 31 slides in the guide slot and the additional guide pin 32 slides in the additional guide slot 54.

[0102] The guidance of the movement of the barb 30 is improved. In particular, the joint guidance of the guide pin 31 in the guide slot and of the additional guide pin 32 in the additional guide slot 54 makes it possible to control an orientation of the barb 30.

[0103] The additional guide slot 54 comprises a rear end 541 and a front end 542 longitudinally opposite the rear end 541. The rear end 541 of the additional guide slot 54 may be adapted to form a stop for the additional guide pin 32 when the barb 30 is in the retracted position, so as to limit a rearward movement of the barb 30. Thus, in the retracted position, the guide pin 31 abuts against the rear end 511 of the guide slot, and the additional guide pin 32 abuts against the rear end 541 of the additional guide slot 54.

[0104] When moving the beard 30 between the retracted position and the first intermediate position, the guide pin 31 slides in the first slot portion 51 and the additional guide pin 32 slides in the additional guide slot 54, which makes it possible to ensure a constant and controlled orientation of the beard 30, the beard 30 being arranged opposite the cap 10 so as to minimize the size of the helmet.

[0105] Likewise, when the beard 30 is moved between the second intermediate position and the protective position, the guide pin 31 slides in the third slot portion 53 and the additional guide pin 32 slides in the additional guide slot 54, which makes it possible to ensure a constant and controlled orientation of the beard 30, the beard 30 being arranged opposite the cap 10 so as to minimize the size of the helmet.

[0106] The front end 542 of the additional guide slot may be adapted to form a stop for the additional guide pin 32 when the barb 30 is tilted between the first intermediate position and the second intermediate position, the barb 30 being tilted around the additional guide pin 32.

[0107] When the beard 30 is tilted between the first intermediate position and the second intermediate position, the guide pin 31 slides in the second slot portion 52 and the additional guide pin 32 abuts against the front end 542 of the additional guide slot 54. Thus, the sliding of the guide pin 31 in the second slot portion 52 makes it possible to modify the orientation of the beard 30 in a manner controlled by the shape of the second slot, which allows the beard 30 to come opposite the wearer's face in the second intermediate position or opposite the cap 10 in the first intermediate position.

[0108] The guide means may further comprise a connecting rod 40 adapted to be attached and fixed to the guide pin 31 and to the additional guide pin 32. The connecting rod 40 may act as a stop preventing the pins 31, 32 from coming out of the slots 51, 52, 53, 54, and / or as a means of stressing the pressing means. figure 10 illustrates by way of non-limiting example a connecting rod 40 thus attached and fixed to the barb 30.

[0109] The connecting rod 40 is adapted to improve the guidance of the controlled movement of the guide pin 31 and the additional guide pin 32, in particular during a tilting of the barb 30 between the first intermediate position and the second intermediate position around the additional guide pin 32.

[0110] The connecting rod 40 may comprise two orifices adapted to receive respectively a connecting rod pin 41 and an additional connecting rod pin 42. The connecting rod 40 may be put in place and fixed on the barb 30 by means of a fixing of the connecting rod pins 41, 42 and the barb pins 31, 32.

[0111] More particularly, the connecting rod pin 41 may be adapted to be removably attached to the guide pin 31 of the barb 30 and the additional connecting rod pin 42 may be adapted to be removably attached to the additional guide pin 32 of the barb 30. The connecting rod pins 41, 42 may be screws adapted to be screwed into the respective barb pins 31, 32.

[0112] When the beard 30 is tilted between the first intermediate position and the second intermediate position, the additional guide pin 32 is in abutment against the front end 542 of the additional guide slot 54, while the guide pin 31 slides in the second portion 52 of the guide slot. The distance between the beard pins 31, 32, the distance between the guide slots 52, 54, as well as the shape of the slots 52, 54, makes it possible to control the orientation of the link 40 when the beard 30 is tilted, and thus makes it possible to control the path of the beard 30 in space. The beard 30 can therefore tilt between an orientation facing the face of the wearer of the helmet and an orientation facing the skull of the wearer of the helmet.

[0113] THE Figures 11a to 11cillustrate by way of non-limiting example the movement of the connecting rod 40 and the beard pins 31, 32, during the tilting of the beard 30 between the first intermediate position and the second intermediate position. Plating methods

[0114] In a first embodiment, the pressing means 90 comprise elastic pressing means adapted to exert a restoring force tending to press the barb 30 against the screen 20. By elastic pressing, it is understood that the restoring force is likely to vary with a position of the barb 30, the restoring force being able to increase when the barb 30 is moved away from the protection position.

[0115] The elastic means for pressing the beard 30 against the screen 20 make it possible to press the beard 30 against the screen 20 even in the case where the wearer of the helmet has not moved the beard 30 entirely to the protective position. Thus, the protection offered by the helmet is improved.

[0116] The plating means may be configured to exert a restoring force on the barb 30 when the barb 30 is arranged near the protective position. Thus, the plating means tend to return the barb 30 to the protective position, which secures the positioning of the barb 30 in the protective position by limiting the risk of movement of the barb 30 when it is in the protective position, and this without requiring any action from the wearer of the helmet.

[0117] The elastic clamping means 90 may be adapted so as not to be stressed during a movement of the barb 30 between the retracted position and the first intermediate position. Thus, the clamping means 90 do not exert a restoring force on the barb 30 when the barb 30 is between the retracted position and the first intermediate position. A space is then provided between the barb 30 and the cap 10.

[0118] Thus, one or more element(s), for example a lamp, can be positioned on the cap 10, in a position more external than the cap 10, without risking being struck by the barb 30 during its movement between the retracted position and the first intermediate position, as illustrated by way of non-limiting example in figures 7 and 8The beard 30 is arranged at a distance from the cap 10 sufficient to allow the movement of the beard 30 without striking the possible element(s) arranged on the cap 10, while being at a sufficiently small distance from the cap 10 to reduce the size of the helmet.

[0119] The elastic plating means 90 may be adapted to be stressed when the barb 30 is between the first intermediate position and the second intermediate position. Figures 11a to 11c illustrate by way of non-limiting example the stressing of the elastic plating means 90 during the movement of the beard 30 between the first intermediate position and the second intermediate position.

[0120] In particular, the connecting rod 40 can be adapted to stress the pressing means 90 during a movement of the barb 30 between the first intermediate position and the second intermediate position.

[0121] When the barb 30 is tilted between the first intermediate position and the second intermediate position, the pressing means 90 then exert a return force on the barb 30. The guide means oppose the pressing of the barb 30. In particular, the second part of the guide slot 52 can form a stop preventing the guide pin 31 from moving backwards. Thus, when tilting between the first intermediate position and the second intermediate position, the barb 30 is not pressed by the action of the pressing means 90. A space is therefore provided between the barb 30 and the cap 10, so as to allow the barb 30 to tilt without striking any element placed on the cap 10, in an external position relative to the cap 10.

[0122] The elastic pressing means 90 may be adapted to exert a restoring force on the barb 30 when the barb 30 is between the second intermediate position and the protection position, the restoring force being adapted to press the barb 30 against the screen 20. Figures 11c and 11d illustrate by way of non-limiting example plating means 90 exerting a return force on the barb 30 between the second intermediate position and the protection position.

[0123] The restoring force is adapted to move the beard 30 backwards, towards the wearer's face, from the second intermediate position to the protective position. The guide slot and, if applicable, the additional guide slot 54 allow and guide the pressing of the beard 30 against the protective screen 20 from the second intermediate position to the protective position.

[0124] The beard 30 can thus be moved from the second intermediate position to the protective position by means of the restoring force exerted by the pressing means 90, without requiring any action on the part of the wearer of the helmet. The beard 30 can be moved from the protective position to the second intermediate position by means of a force exerted on the beard 30 by the wearer of the helmet, the force exerted by the wearer being sufficient to counter the restoring force exerted by the pressing means, and directed substantially forward.

[0125] In the protection position, the pressing means 90 may be at rest, that is to say not exert a restoring force on the barb 30. Alternatively, in the protection position, the pressing means 90 may be biased so as to exert a restoring force on the barb 30 tending to press the barb 30 against the screen 20. The restoring force may thus be zero or non-zero when the barb 30 is in the protection position.

[0126] The restoring force exerted by the pressing means 90 may increase, when the barb 30 is between the protection position and the second intermediate position, when a distance between the barb 30 and the screen 20 increases. The restoring force may in particular be higher when the barb 30 is in the second intermediate position than when the barb 30 is in the protection position.

[0127] The clamping means 90 of the articulation system 50 may comprise a spring adapted to exert on the barb 30 a restoring force tending to press the barb 30 against the screen 20 when the barb 30 is near or in the protective position. For example, the spring 90 may exert on the barb 30 the restoring force when the barb 30 is between the first intermediate position and the protective position.

[0128] The guide means and the pressing means 90 may be arranged so that, when the barb 30 moves between the first intermediate position and the second intermediate position, the movement of the connecting rod 40 causes a movement of the spring 90 adapted to stress the spring 90. The connecting rod 40 therefore acts on the spring 90 to stress it, that is to say to move it relative to its rest position.

[0129] The spring 90 may be made of metal, which allows the spring 90 to accept significant deformations. Alternatively, the spring 90 may be made of plastic, or of metal coated with an insulating material, which allows the spring 90 to comply with certain safety standards, in particular safety standards requiring the absence of metal parts in the safety helmet.

[0130] In a second embodiment, which is compatible with the first embodiment, the plating means 90 comprise means for clipping the barb 30 against the screen 20. The clipping means can be arranged both on the barb 30 and on the screen 20, and make it possible to secure the positioning of the barb 30 in the protective position. The clipping means can be implemented as an alternative or in addition to elastic plating means. Kinematics of the beard movement between the retracted position and the protected position

[0131] The beard 30 can be moved from the retracted position to the protected position by performing the following three steps in order: sliding of the barb 30 from the retracted position to the first intermediate position; tilting of the barb 30 from the first intermediate position to the second intermediate position; pressing of the barb 30 from the second intermediate position to the protection position, by means of the pressing means 90.

[0132] The plating of the barb 30 may comprise a plating of the barb 30 from the second intermediate position towards the protection position, by means of a restoring force exerted by elastic plating means 90, such as a spring.

[0133] Alternatively or additionally, the plating of the beard 30 comprises clipping the beard 30 against the screen, by means of clipping means.

[0134] The beard 30 can be moved from the protection position to the withdrawal position by performing the following three steps in order: moving the beard 30 from the protection position to the second intermediate position, by applying a force opposing a force exerted by the pressing means 90, in particular by elastic pressing means 90; tilting the beard 30 from the second intermediate position to the first intermediate position; sliding the beard 30 from the first intermediate position to the retracted position.

[0135] The movement of the barb 30 from the protection position to the retracted position corresponds substantially to the inverse movement of the movement of the barb 30 from the retracted position to the protection position, the movement being guided by the guide means of the articulation system 50.

[0136] Other embodiments may be envisaged and a person skilled in the art may readily modify the embodiments or examples set forth above or envisage others while remaining within the scope of the invention.

Claims

1. A safety helmet adapted to be worn by an individual, comprising: - a shell (10) configured to receive a skull of the individual; - a shield (20) adapted to protect an area of a face of the individual; - a chin guard (30) adapted to be moved between a withdrawal position and a protection position, wherein in the protection position, the chin guard (30) is at least partially disposed around the shield (20) so as to extend the area of protection of the face of the individual by the helmet; - a system for articulating (50) the chin guard (30) relative to the shell (10), comprising means for guiding a displacement of the chin guard (30) between the withdrawal position and the protection position, the safety helmet being characterized in that the articulation system (50) further comprises means (90) for pressing the chin guard (30) against the shield (20) adapted to press the chin guard (30) against the shield (20) when the chin guard (30) is near or in the protection position.

2. The safety helmet according to claim 1, wherein the pressing means (90) of the articulation system (50) comprise a spring adapted to exert on the chin guard (30) a restoring force tending to press the chin guard (30) against the shield (20) when the chin guard (30) is near or in the protection position.

3. The safety helmet according to any of claims 1 or 2, wherein the guide means of the articulation system (50) comprise a guide slot and wherein the chin guard (30) comprises a guide pin (31) adapted to slide inside the guide slot so as to guide a controlled displacement of the chin guard (30) between the withdrawal and protection positions.

4. The safety helmet according to claim 3, wherein the guide slot comprises: - a first portion (51) adapted to guide a sliding of the chin guard (30) between the withdrawal position and a first intermediate position, - a second portion (52) adapted to guide a switching of the chin guard (30) between the first intermediate position and a second intermediate position, wherein in the second intermediate position, the chin guard (30) is at least partially positioned around the shield (20) and at a distance from the shield (20), and - a third portion (53) adapted to guide a pressing of the chin guard (30) against the shield (20) between the second intermediate position and the protection position.

5. The safety helmet according to claim 4, wherein the guide slot has substantially the shape of a cane, the first portion (51) and the third portion (53) of the guide slot being disposed at a distance from each other and extending mainly in a longitudinal direction of the helmet, and the second portion (52) of the guide slot being curved and connecting the first portion (51) and the third portion (53) of the guide slot.

6. The safety helmet according to claim 4 or 5, wherein the articulation system (50) comprises an additional guide slot (54) having dimensions substantially similar to the dimensions of the first portion (51) of the guide slot, the additional guide slot (54) extending mainly in a longitudinal direction of the helmet and being disposed substantially in an extension of the third portion (53) of the guide slot at a distance from the third portion (53) of the guide slot, and wherein the chin guard (30) comprises an additional guide pin (32) adapted to slide inside the additional guide slot (54) when the chin guard (30) is moved between the withdrawal and protection positions.

7. The safety helmet according to claim 6, wherein: - the first portion (51) of the guide slot comprises a rear end (511) adapted to form an abutment for the guide pin (31) when the chin guard (30) is in the withdrawal position, and the third portion (53) of the guide slot comprises a rear end (532) adapted to form an abutment for the guide pin (31) when the chin guard (30) is in the protection position, and wherein - the additional guide slot (54) comprises a rear end (541) adapted to form an abutment for the additional guide pin (32) when the chin guard (30) is in the withdrawal position, and a front end (542) adapted to form an abutment for the additional guide pin (32) during the switching of the chin guard (30) between the first intermediate position and the second intermediate position, the switching of the chin guard (30) taking place around the additional guide pin (32).

8. The safety helmet according to any of claims 6 or 7, wherein the guide means of the articulation system (50) further comprise a connecting rod (40) adapted to be added and fixed onto the guide pin (31) and onto the additional guide pin (32), wherein the connecting rod (40) is adapted to bias the pressing means (90) during a displacement of the chin guard (30) between the first intermediate position and the second position intermediate.

9. The safety helmet according to any of claims 1 to 8, wherein the shield (20) is adapted to be moved between a lowered position in which the shield (20) protects part of the face of the individual wearing the helmet and a raised position in which the shield (20) is obscured so as to expose the face of the individual wearing the helmet.

10. The safety helmet according to claim 9, wherein the system for articulating (50) the chin guard (30) relative to the shell (10) is adapted to allow a controlled displacement of the chin guard (30) between the protection position and the withdrawal position independently of a displacement of the shield (20) between the lowered position and the raised position.

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