• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Helmet of protection with double visor for the practice of sports or leisure activities. The helmet of the invention comprises a shell (2) with a front opening (3), a front visor (4), a second visor (5) disposed inside the shell, and rotation means by which the second visor rotated with respect to the shell between an extended operative position (a), remaining in front of the user's eyes, and a retracted inoperative position (b), being removed from the user's face. The helmet also comprises an inner padding of thermal insulating material (6) with a front slit (7) for housing the second visor in the retracted inoperative position (b), in which the second visor is separated and isolated from the shell by an anterior portion of filling (61) and separated and isolated from the user's head by a back portion of filling (62). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2588258A1
    申请号:ES201630621
    申请日:2016-05-13
    公开日:2016-10-31
    发明作者:Javier CADENS BALLARÍN；Xavier Mateu Codina
    申请人:Mat Global Solutions SL；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Protective helmet with double visor for the practice of sports activities or
    playful
    Technical sector of the invention
    The present invention relates to a protective helmet with double visor for the practice of sports or leisure activities, especially for those activities that involve a thermal gradient between the user and the outside environment with a heat transfer from the inside to the outside of the helmet , such as a protective helmet for driving a snowmobile.
    The helmet is one of those comprising an outer shell provided with a front opening, a front screen or visor arranged for covering the front opening and a second visor essentially parallel to the front visor or the shell, arranged inside the cavity that makes up the shell. The second visor is provided at its ends with rotating means by which it is able to rotate with respect to the shell around an imaginary axis that crosses the shell side to side. Thus, the second visor can move between an extended operating position, in which the front part of the second visor is arranged in front of the eyes of the helmet user, and a retracted inoperative position, in which it is removed from the user's face .
    Background of the invention
    It is well known that a helmet is normally constituted mainly by a shell, which is the rigid outer structure that can be seen from the outside and is responsible for providing rigidity to the helmet and withstanding the first impact in case of fall or blow and abrasion with the contact surface. The covers can be made of thermoplastic materials (in the simplest range helmets) and with fiber reinforced composite materials such as glass fiber, carbon and kevlar®, etc. to absorb shock better and also achieve a good relationship of resistance and lightness.
    In the helmets used as protection for the practice of sports or recreational activities that take place abroad, the shell is provided with a frontal opening at the height of
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    the face of the helmet user, usually covered by a transparent polycarbonate screen or front visor through which the user can see the outside while his face is protected from the outside environment.
    It is also common for these helmets to be provided with a second visor, also made of polycarbonate and often with a tint to reduce their visible radiation transmission rate, parallel to the front visor or the shell, arranged inside the cavity that conforms the helmet, so the second front visor is the one that is closest to the user's face. This second visor protects the user's eyes from solar radiation and is articulated at its two ends articulated to the shell so that the second visor can rotate with respect to an imaginary rotation axis that crosses the user's temples, being able to adopt an operative position extended, in which the second visor is arranged in front of the user's eyes, and a retracted inoperative position, in which the second visor is removed from the user's face, in an interspace provided above the helmet opening, between the inner surface of the shell and a filling layer of thermal insulating material generally of expanded polystyrene. The second visor has user-operated and accessible means from outside the shell by means of which the second visor can be moved to one position or another according to its convenience.
    A helmet like the one described above can be found in the practice of outdoor activities, for example, when riding a snowmobile, a most common practice in places with especially cold winters such as Canada, United States , Russia and Scandinavia. The user's face is protected from the outside environment by means of the front screen or visor, and at the same time, the second visor protects the user from harmful effects on the eyes caused by the reflection of solar radiation in the snow.
    In these extremely cold outdoor conditions, the user's head is practically confined and thermally isolated from the outside by the helmet. As the sporting or recreational activity is carried out, the temperature difference between the exterior environment and the interior of the helmet becomes more evident, since the user's head usually begins to sweat from the effort made and also continuously exhales air with water vapor close to saturation, with a relative humidity very close to 100%.
    In this situation, the practice of the activity by the user in a cold outdoor environment,
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    in which the user can be around 37 ° C and the temperature outside can be even - 40 ° C, it implies a thermal gradient with a heat transfer from the inside to the outside of the helmet. The visibility of the user through the second visor can not only be affected by the fogging of the second visor by the formation of fog, but ice can even form on the inner surface, closest to the eyes, compromising user safety and of those around him.
    To minimize this problem, some helmets incorporate second visors to which an anti-fog treatment has been applied through surface treatments based on polysiloxanes or silicones. However, ice formation is still a problem to solve.
    Explanation of the invention
    In order to provide a solution to the problems raised, a protective helmet with double visor is disclosed for the practice of sports or recreational activities, which includes an outer shell provided with a front opening, a screen or front visor arranged for cover of the front opening, a second visor essentially parallel to the front visor or the shell, arranged inside the cavity that forms the shell, and means of rotation by which the second visor is capable of rotating with respect to the shell around an imaginary axis that crosses the shell from side to side, moving between an extended operating position, in which the front part of the second visor is arranged in front of the eyes of the helmet user, and a retracted inoperative position, in the one that is removed from the user's face.
    In essence, the protective helmet is characterized in that it also comprises a filling of thermal insulating material disposed adjacent to the inner surface of at least the front part of the shell that is located above the front opening, the filling of insulating material being provided of a frontal groove formed to accommodate the second visor when it is in the retracted inoperative position, so that when the second visor is housed inside the groove, the second visor is separated and isolated from the shell by an anterior filling portion and separated and isolated from the user's head by a subsequent filling portion. The second visor is capable of entering or exiting said slit when rotating with respect to the shell to adopt the retracted inoperative position or the extended operating position.
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    Thus, it has been found that keeping the second visor isolated on both sides while remaining in the inoperative position removed is sufficient to minimize or prevent the formation of ice on the second visor during the practice of sports or recreational activities in cold outdoor environments. In the retracted inoperative position, the second visor, being inside the recess of the thermal insulating material filling, only communicates with the environment inside the helmet through the entrance to the recess, arranged at a level just above of the front opening of the helmet.
    According to an embodiment of the invention, the filling of insulating material is formed by a layer of insulating material in which a groove has been made in an intermediate zone of its thickness.
    Alternatively, according to a preferred embodiment of the invention, the filling of insulating material is formed by at least two independent filling pieces but interconnectable when facing at least one of their faces, so that when the two pieces are coupled, between its faces faces a first space of separation between them followed by a section of closure in which the faces face contact each other, constituting the gap.
    According to another characteristic of the preferred embodiment of the invention, the helmet comprises an upper piece of thermal insulating material filled adjacent to the inner surface of the upper part of the shell and arranged next to the filling of insulating material that is located above of the front opening of the shell.
    According to another feature of the invention, the filling of thermal insulating material is expanded polystyrene (EPS) or other foamed plastics.
    According to another characteristic of the invention, the anterior filling portion has a thickness between 12 and 18 mm thick, and the posterior filling portion has a thickness between 12 and 28 mm.
    According to another feature of the invention, the second visor is a visor for visual protection against solar radiation. Preferably, the second visor is made of polycarbonate and incorporates an essentially gray mass tinting to reduce its transmission rate to visible radiation. Alternatively, the second visor incorporates a tinted orange mass
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    so that the user perceives a greater contrast in what he sees through the second visor.
    According to another feature of the invention, each of the two ends of the second visor is shaped like a fork, and also, the first fork-shaped end is linked to the axis of a crank around which said end is capable of rotating jointly and severally when the wearer of the helmet operates the handle of said crank, the handle being arranged in an accessible way from outside the shell.
    According to another characteristic of the invention, the helmet comprises two supports that can be attached to each other and fixedly attached to the shell, with the first fork-shaped end of the second visor interposed between the two supports. The coupling of the two supports forms a fixed support axis to the shell, coaxial with the axis of the crank, around which the first fork-shaped end is capable of rotating when the user drives the handle of said crank. At least a part of the crank shaft is arranged inside the support shaft.
    According to another feature of the invention, between the two arms of the first fork-shaped end of the second visor is arranged by fitting an adaptation piece provided with a hole whose outer contour coincides with the outer surface of the crank shaft, of so that when the user activates the handle of the crank, the axis of the crank draws in its turn around the support axis to the adaptation piece and is, in turn, to the first fork-shaped end and the rest of the Second visor
    According to another feature of the invention, the anterior filling portion and the subsequent filling portion are supported on respective support profiles, fixedly attached to the shell and arranged just above the front opening, the two support profiles being separated for a distance that gives access to the front slit.
    According to another characteristic of the invention, the first support profile on which the anterior filling portion is supported comprises at least two vertical walls essentially parallel to the shell between which the portion is retained. On the other hand, the second support profile on which the rear filling portion is supported comprises a vertical wall configured as a succession of essentially trapezoidal or triangular battlements, oriented towards the frontal groove.
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    According to another characteristic of the invention, the helmet comprises a third support profile coupled to the second support profile, the third profile being formed in the form of a flat strip oriented in a normal direction to the crenellated vertical wall of the second support profile for the support from the lower edge of the posterior filling portion.
    According to another feature of the invention, one of the vertical walls of the first support profile and the vertical wall of the second support profile are arranged facing each other and separated by the distance that gives access to the front groove, being at less one of these vertical walls provided with a means of scratching or brushing to produce, when the second visor goes into the front groove to adopt the retracted inoperative position, the detachment of any grid outside the second visor that has been able to adhere to one of the surfaces of the second visor.
    Brief description of the drawings
    The attached drawings illustrate, by way of non-limiting example, a preferred embodiment of the protective helmet object of the invention. In these drawings:
    Fig. 1 is a sectional view of the protective helmet object of the invention in a retracted inoperative position, according to a vertical cut plane that divides the helmet in two; Fig. 2 is the same view as that of Fig. 1 but in which a side view of the second visor and the rotation means allowing its rotation with respect to the shell has been superimposed for greater understanding. ;
    Fig. 3 is a side view of the helmet of Fig. 1 but in an extended operating position, in which the components inside the helmet are shown in broken lines; Fig. 4 is a side view of the helmet of Fig. 3 but in a retracted inoperative position, in which the profile of the helmet user is also shown;
    Fig. 5 is an exploded perspective view of the second visor, of the rotation means and of the three support profiles on which the filling portions rest; Fig. 6 is a schematic temperature gradient diagram produced in a conventional helmet, in which the second visor is disposed between the shell and a filling of thermal insulating material; Y
    Fig. 7 is a schematic temperature gradient diagram produced in the helmet object of the invention, in which the second visor is disposed between a front portion of thermal insulating material filling and a rear portion of insulating material filling
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    thermal.
    Detailed description of the drawings
    In Figs. 3 and 4 shows a protective helmet 1 with a double visor for the practice of sports or recreational activities, especially indicated for its advantages for activities carried out in a cold outdoor environment, such as driving a snowmobile.
    The helmet 1 basically comprises an outer shell 2 provided with a front opening 3 at the height of the user's face 10 (see Fig. 4), a screen or front visor 4 arranged covering the front opening 3, and a second visor 5 essentially parallel to the front visor 3 or to the shell 2, arranged inside the cavity that forms the shell 2. The second visor 5, shown in detail in Fig. 5, is a visor for visual protection against solar radiation , so that its shape resembles that of a pair of glasses, it is made of polycarbonate and incorporates a gray mass tint to reduce the transmission of visible radiation, or alternatively an orange tint, so that the user 10 perceives a greater contrast in what which you see through the second visor 5.
    The hull 1 also has means of rotation whereby the second visor 5 is capable of rotating with respect to the shell 2 around an imaginary axis that crosses the shell 2 side by side (approximately at the height of the temples of the user 10). Thus, the second visor 5 can move between an extended operating position A, shown in Fig. 3, in which the front part 50 of the second visor 5 is arranged in front of the eyes of the user 10 of the helmet 1, and a position inoperative retracted B, shown in Fig. 4, in which it is removed from the face of the user 10 and is housed inside a groove 7 arranged in the front part of the helmet 1 as explained below.
    As seen in Figs. 1 to 4, inside the hull 1, or what is the same, in the recess that forms the shell 2, a filling of thermal insulating material 6, preferably of expanded polystyrene (EPS), is arranged, although alternatively it may be manufactured in other foamed plastics of high thermal resistance. The EPS is a material that is usually found in conventional helmets due to its ability to cushion in case of impacts. On the other hand, its thermal insulation properties as well as those of other foamed materials are also known, with
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    application in building, transportation of frozen food, heat and cold industrial equipment, etc.
    The filling of insulating material 6 is arranged adjacent to the inner surface of the front part of the shell 2, which is the part located just above the front opening 3 of the helmet 1, part to which the second visor 5 is removed when it goes into the retracted inoperative position B. The rest of the inner surface of the shell 2 is covered by a top piece of thermal insulating material 60 placed next to the filling of insulating material 6, which preferably is also expanded polystyrene.
    In Figs. 1 and 2 it can be seen that the filling of insulating material 6 is constituted by two independent filling pieces but interconnectable when facing at least one of their faces. These two pieces have an essentially concentric structure around the head of the user 10 of the hull 1. The first filling piece constitutes mostly the anterior filling portion 61 which is located in contact with the inner surface of the shell 2, while the second The filling part constitutes a rear filling portion 62 located between the first filling piece and the user's head 10. Of the second filling piece, only its rear end contacts the inner surface of the shell 2, just in front of the piece top filling of thermal insulating material 60 covering the rest of the interior of the shell 2.
    The two filler pieces described above that form the filling of thermal insulating material 6 are coupled so that between their facing faces there is a first section with a gap between them, followed by a closing section in which the facing faces they contact each other and therefore cease to be separated. The separation of the first section constitutes the frontal groove 7, whose dimensions allow the accommodation of the second visor 5 in the retracted inoperative position B, when the user 10 decides to remove it from his face.
    Thus, as shown in Fig. 1, in the retracted inoperative position B, the second visor 5 is housed within the groove 7, in which it is kept, on the one hand, separated and isolated from the shell 2 by the anterior filling portion 61, and on the other, separated and isolated from the user's head 10 by the subsequent filling portion 62. The thermal insulation of the second visor 5 by its two faces reduces to a minimum or even completely eliminates the formation of ice on visor 5, a phenomenon that is common in conventional helmets 1 '
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    double visor (see Fig. 6) in which the second visor 5 'is directly between the shell 2' and an EPS 6 'filling layer that separates the second visor 5' from the user's head 10. The comparison between Figs. 6 and 7 shows the advantages of the helmet 1 described above in relation to a conventional helmet 1 ’.
    In Fig. 6 the diagram of the temperature gradient that occurs in a conventional helmet 1 'is shown schematically, in which a second visor 5' is practically in contact with the outer shell 2 'and without isolation by means , so that its temperature is very close to the outside temperature. There is only one EPS 6 ’fill layer between the second 5’ visor and the user 10 for energy absorption in case of impact. When the outside temperature is very cold, easily the temperature on the inner or outer surface of the second visor 5 ’will be lower than the rolling temperature, so that the water vapor in the air will condense upon reaching the second visor 5’. Even when said temperature is sufficiently low, freezing of said condensate may occur.
    On the contrary, in the helmet 1 object of the invention referred to in Fig. 7, the thickness of the EPS padding necessary to perform the main function of a helmet 1, that is, damping impacts, is not fully available in the inside the helmet between the user 10 and the second visor 5, as in the solution of the conventional helmet 1 '(Fig. 6), but part of the thickness of the EPS padding is disposed between the outer shell 2 and the second visor 5 ( see previous portion of filling 61 and subsequent portion of filling 62) in order to also take advantage of its thermal insulation properties. Therefore, said material located between outer shell 2 and the second visor 5 (anterior filling portion 61) performs an insulating function that makes the surface temperature of the second visor 5 in the new position (Fig. 7) much more high and close to the internal temperature of the hull 1 or of the user 10, whereby the possibilities of condensation / freezing on said surface are considerably reduced.
    By way of guidance only, the anterior filling portion 61 has a thickness between 12 and 18 mm thick, preferably about 15 mm, while the posterior filling portion 62 has a thickness between 12 and 28 mm, preferably between 15 and 25 mm.
    For the placement of the previous filling portion 61 a first support profile is provided
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    21 (shown in detail in Fig. 5) fixedly attached to the shell 2, particularly along the top and side of the front opening 3 of the hull 1, as if it were a semi-frame of the opening 3 . The first support profile 21, in the section that runs along the upper part of the front opening 3, has a cross-section formed by an essentially horizontal base from which three vertical walls, two end walls and one in the normal direction. intermediate, forming two channels, one anterior and one posterior (see Fig. 1). The two vertical walls that make up the anterior channel are separated by a space equal to the thickness of the shell 2, specifically equal to the thickness of the portion of the shell 2 immediately above the front opening 3. Instead, the second channel, formed by the space between the intermediate vertical wall and an extreme wall of greater height than the other two, it is the one that receives the support of the previous filling portion 61.
    For the placement of the rear filling portion 62, a second support profile 22 and, coupled thereto, a third support profile 24 in the form of a strip are fixedly arranged. The second support profile 22 has an L-shaped cross section, the vertical wall being configured as a succession of essentially trapezoidal or triangular battlements 23, as can be seen in Fig. 5. This crenellated vertical wall is oriented towards the groove 7 frontal. The succession of battlements 23 retain the rear filling portion 62 preventing it from entering the groove 7. In fact, the battlements 23 are embedded in a recess made at the lower end of the rear filling portion 62 and providing a tape Insulation above the battlements 23 ensures that the second support profile 22 is held without falling. The lower end of the rear filling portion 62 rests mostly on the third support profile 24.
    In Fig. 1 it is observed that the vertical wall of greater height of the first support profile 21 and the crenellated vertical wall of the second support profile 22 are arranged facing each other and separated by a distance constituting the entrance or access of the second visor 5 to the front groove 7. Optionally, at least one of these vertical walls is provided with scraping or brushing means to produce, when the second visor 5 enters the front groove 7, the detachment of any particles outside the second visor 5 that may have been adhere to one of the surfaces. Thus, in the case where some frost began to form in the second visor 5, the scratching means would be responsible for its elimination when the user 10 rotated the second visor 5 to change from the extended operating position A to the position inoperative retracted B.
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    As for the rotation means that allow the movement of the second visor 5 with respect to the shell 2, these comprise a crank 8, a pair of supports 91 and 92 interchangeably arranged on one side of the shell 2 a the height of the left temple of the user 10 (according to the helmet 1 shown in the figures), and a third support 93 fixedly attached to the lateral bull of the shell 2, at the height of the right temple of the user 10 (see Fig. 5).
    In order for the second visor 5 to rotate, each of its two ends is shaped as a fork 51, 52, as shown in Figs. 2 to 5. The first fork-shaped end 51 is linked to the axis 81 of a crank 8 around which said end is capable of rotating in solidarity when the user 10 of the helmet 1 drives the handle 82 of said crank 8. The handle 82 is mounted on the outside of the shell 2 in an easily accessible way to the user 10 wearing the helmet 1, which only has to push the handle 82 up or down to move from the retracted inoperative position B to the extended operating position A or vice versa. In Fig. 3 the handle 82 is as high as possible, a situation in which the second visor 5 is in the extended operating position A, and therefore, if the user 10 wants to remove the second visor 5 in front of his eyes , pull the handle 82 down to cause the second visor 5 to rotate and enter the recess 7 adopting the retracted inoperative position B (Fig. 4).
    The first fork-shaped end 51 is interposed between the two supports 91 and 92, specifically embracing the support shaft 90 which is part of the first support 91 and extending as a protuberance to the second support 92, provided in turn of a central through hole in which the end of the support shaft 90 is coupled. In Fig. 5 it is shown that the support shaft 90 is a hollow tubular body with open ends to allow it to be traversed by the axis 81 of the crank 8 with respect to which it is coaxially arranged. The axis 81 of the crank 8 does not have a cylindrical contour along its entire length but rather in at least one section is configured with at least one flat face that fits in the contour of a through hole provided in an adaptation piece 80 in turn coupled to the first fork-shaped end 51 of the second visor 5, so that when pushing or pulling the handle 82 up or down, to cause rotation of the axis 81 of the crank 8, this drag jointly in its turn to the adaptation piece 80 and is at the fork-shaped end 51, and therefore, to the second visor 5. The crank arm 8 that joins the rotation axis 81 with the handle 82 moves angularly within a recess provided on the outer surface of the first support 91. This recess is limited by two
    walls that form a certain angle between s ^ with a vertex on the support axis 90. This angle is calculated so that the user 10, when pushing or pulling the handle 82 of the handle 8 up or down, finds an upper stop and a lower stop corresponding to the extended operating position A and the retracted inoperative position B.
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    The second fork-shaped end 52, as seen in Fig. 5, is arranged around an axis in the form of a cylindrical protrusion that starts from the third support 93 located on the right side of the shell 2, which in turn is aligned with the axis 90 of the first support 91.
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    权利要求:
    Claims (15)
    [1]
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    1. - A protective helmet (1) with double visor for the practice of sports or leisure activities, comprising an outer shell (2) provided with a front opening (3), a screen or front visor (4) arranged for covering the front opening (3), a second visor (5) essentially parallel to the front visor (3) or to the shell (2), arranged inside the cavity that forms the shell (2), and means of rotation by which the second visor (5) is capable of rotating with respect to the shell (2) around an imaginary axis that crosses the shell (2) from side to side, moving between an extended operating position (A), in which the front part (50) of the second visor (5) is arranged in front of the user's eyes (10) of the helmet (1), and a retracted inoperative position (B), in which it is removed from the face of the user (10), characterized in that the helmet (1) comprises a filling of thermal insulating material (6) arranged adjacent to the at the inner surface of at least the front part of the shell (2) located above the front opening (3), the filling of insulating material (6) being provided with a front groove (7) formed to accommodate the second visor (5) when it is in the retracted inoperative position (B), so that when the second visor (5) is housed inside the slit (7), the second visor (5) is separated and isolated from the shell (2 ) by an anterior filling portion (61) and separated and isolated from the user's head (10) by a subsequent filling portion (62), and because the second visor (5) is able to enter or exit said slit (7) when rotating with respect to the shell (2).
    [2]
    2. - The helmet (1) according to claim 1, wherein the filling of insulating material (6) is formed by a layer of insulating material in which a recess (7) has been made in an intermediate area of its thickness .
    [3]
    3. - The helmet (1) according to claim 1, wherein the filling of insulating material (6) is formed by at least two independent filling pieces but interconnectable when facing at least one of its faces, so that when the two pieces are coupled, a first space of separation between them is formed between their faces, followed by a closing section in which the faces face each other, forming the slit (7).
    [4]
    4. - The helmet (1) according to claim 3, wherein the helmet (1) comprises a top piece of thermal insulating material (60) arranged adjacent to the inner surface of the
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    upper part of the shell (2) and arranged next to the filling of insulating material (6) that is located above the front opening (3) of the shell (2).
    [5]
    5. - The helmet (1) according to any one of the preceding claims, wherein the filling of thermal insulating material (6) is made of expanded polystyrene (EPS) or of a foamed plastic.
    [6]
    6. - The helmet (1) according to any one of the preceding claims, wherein the anterior filling portion (61) has a thickness between 12 and 18 mm thick and the subsequent filling portion (62) a thickness comprised between 12 and 28 mm.
    [7]
    7. - The helmet (1) according to any one of the preceding claims, wherein the second visor (5) is a visor for visual protection against solar radiation.
    [8]
    8. - The helmet (1) according to claim 7, wherein the second visor (5) is made of polycarbonate and incorporates either a mass tint to reduce its visible radiation transmission rate, or a mass tint of Improved visual contrast for the user.
    [9]
    9. - The helmet (1) according to any one of the preceding claims, in which each of the two ends of the second visor (5) is shaped like a fork (51, 52), and wherein the first end in fork shape (51) is linked to the axis (81) of a crank (8) around which said end is capable of rotating in solidarity when the wearer (10) of the helmet (1) drives the handle (82) of said crank ( 8), the handle (82) being arranged accessible from outside the shell (2).
    [10]
    10. - The helmet (1) according to claim 9, comprising two supports (91, 92) that can be attached to each other and fixedly attached to the shell (2), the first fork-shaped end (51) of the second visor being left (5) interposed between the two supports (91, 92), in which the coupling of the two supports (91, 92) forms a support axis (90) fixed to the shell (2), coaxial with the axis (81 ) of the crank (8), around which the first fork-shaped end (51) is capable of rotating when the user (10) drives the handle (82) of said crank (8), and in which at least A part of the shaft (81) of the crank (8) is arranged inside the support shaft (90).
    [11]
    11. - The helmet (1) according to claim 10, wherein between the two arms of the first fork-shaped end (51) of the second visor (5) is arranged by fitting a piece of
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    adaptation (80) provided with a hole whose outer contour coincides with the outer surface of the shaft (81) of the crank (8), so that when the user (10) drives the handle (82) of the crank (8), the shaft (81) of the crank (8) draws in its turn around the support shaft (90) to the adaptation piece (80) and is in turn to the first fork-shaped end (51) and the rest of the second visor (5).
    [12]
    12. - The helmet (1) according to any one of the preceding claims, wherein the anterior filling portion (61) and the subsequent filling portion (62) are supported on respective support profiles (21, 22), joined fixedly to the shell (2) and arranged just above the front opening (3), the two support profiles (21, 22) being separated by a distance that gives access to the front groove (7).
    [13]
    13. - The helmet (1) according to claim 12, wherein the first support profile (21) on which the anterior filling portion (61) is supported comprises at least two vertical walls essentially parallel to the shell (2 ) between which the portion is retained, and in which the second support profile (22) on which the rear filling portion (62) rests comprises a vertical wall configured as a succession of battlements (23) essentially trapezoidal or triangular, oriented towards the front groove (7).
    [14]
    14. - The helmet (1) according to claim 13, comprising a third support profile (24) coupled to the second support profile (22), the third profile (24) being configured in the form of a flat strip oriented in the perpendicular direction to the crenellated vertical wall of the second support profile (21) for the support of the lower edge of the rear filling portion (62).
    [15]
    15. - The helmet (1) according to any one of claims 12 to 14, wherein one of the vertical walls of the first support profile (21) and the vertical wall of the second support profile (22) are arranged a front to the other and separated by the distance that gives access to the front slit (7), at least one of these vertical walls being provided with scraping or brushing means to produce, when the second visor (5) enters the front slit (7) to adopt the retracted inoperative position (B), the detachment of any particles outside the second visor (5) that has been able to adhere to one of the surfaces.
    DRAWINGS
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    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    ES2588258B1|2017-08-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0590255A1|1992-10-01|1994-04-06|NOLAN HELMETS S.p.A.|Crash-helmet for motorcyclists and the like, provided with adjustable means for screening incident light rays|
    CN201398504Y|2009-01-22|2010-02-10|廖浩甜|Motorcycle helmet with double lenses|
    EP2340732A1|2009-12-29|2011-07-06|Link Innova Engineering, S.C.|Safety helmet with double visor|
    US20130036532A1|2011-08-08|2013-02-14|Afx North America Inc.|Dual lens helmet|
    法律状态:
    2017-08-03| FG2A| Definitive protection|Ref document number: 2588258 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170803 |
    2017-08-28| PC2A| Transfer of patent|Owner name: MAT PRODUCT & TECHNOLOGY, S.L. Effective date: 20170822 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630621A|ES2588258B1|2016-05-13|2016-05-13|Protective helmet with double visor for sports or recreational activities|ES201630621A| ES2588258B1|2016-05-13|2016-05-13|Protective helmet with double visor for sports or recreational activities|
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