Classifications

• • A—HUMAN NECESSITIES
  • A42—HEADWEAR
  • A42B—HATS; HEAD COVERINGS
  • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
  • A42B3/04—Parts, details or accessories of helmets
  • A42B3/18—Face protection devices
  • A42B3/185—Securing goggles or spectacles on helmet shells
• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C3/00—Special supporting arrangements for lens assemblies or monocles
  • G02C3/02—Arrangements for supporting by headgear

Definitions

• the present invention relates to glasses to be attached to a helmet and to a helmet equipped with such glasses.
• the technical field of the invention is that of manufacturing glasses.
• the invention applies in particular to the helmets of drivers or passengers of fast transport vehicles, such as the helmets of motorcyclists.
• helmets generally comprise a rigid external cap, an internal cap (or cap) covering a substantial part or the whole of the internal face of the external cap, as well as a lining covering the internal face of the internal cap; the latter is thicker and less rigid than the outer cap, and is generally molded from a plastic material such as expanded polystyrene.
• a screen made of transparent plastic material which is fixed to the external cap so as to be able to pass from one configuration retracted to an active configuration; this passage is generally obtained by rotation of the screen, thanks to the presence of two substantially diametrically opposite pivots which provide the connection between the cap and the screen.
• This type of rigid screen which retracts against the internal face or against the external face of the cap, extends, in the active position (eye protection), several centimeters in front of the eyes of the wearer of the helmet; in this position, wind and dust in particular can be engulfed in the free space separating the screen from the wearer's face;
• the screen therefore only fulfills its function of eye protection imperfectly, especially when the helmet is devoid of a chin strap connecting the cheeks of the cap.
• the presence of a front hollow space separating the outer cap from the inner cap decreases the shock absorption capacity by the front part of the helmet; moreover, the presence of prominent lateral levers under the cheeks of the helmet, which are necessary to cause the pivoting of the bar carrying the screen, can cause a gene for the user.
• the elastic link tab of P screen to P roll presents a limited capacity of adaptation to the different configurations of faces of users likely to be encountered; consequently this tab cannot allow, in all cases, to press the edges of the screen around the eyes of the wearer of the helmet.
• the adaptation of this screen support system to "small heads" necessitates lengthening the elastic tab, the length of the retracting cavity of the screen is increased by the same amount, at the start. reduce the performance of the helmet, in terms of impact resistance.
• Document FR-A-2717046 describes another device for retracting a visor inside P of a helmet.
• An objective of the invention is to propose retractable glasses for helmets, and glasses helmets, which are improved.
• An objective of the invention is to remedy, at least in part, the drawbacks of known systems for fixing and / or adapting glasses or retractable screen (s) to a helmet.
• a device for fixing spectacles to a helmet by two branches each equipped with a means - such as a pivot - for fixing to the helmet, in which each branch is deformable and / or articulated, and includes means for recalling the glasses in the direction of the means of attachment to the helmet, so that the amplitude of the movement for returning the glasses towards the interior of the helmet can be large and can thus adapt to the facial configurations of the wearer very varied.
• the spectacle support essentially constituted by the two pivoting arms (left and right) is compact and can easily be designed to have, with the spectacles that it supports, a low aerodynamic drag coefficient; thus, this support is preferably designed to slide (during its pivoting) on the external face of the external cap of the helmet.
• the restoring forces of the glasses towards the face of the wearer which are distributed and / or applied on each side of the glasses, favor the intimate contact of the glasses with the portions of the face surrounding the eyes of the wearer of the helmet.
• each of the return means has an elastic deformation capacity over a large amplitude (or stroke) (in particular over an amplitude at least equal to 10 mm); in particular, each return means preferably comprises a helical metal spring.
• each of the branches is telescopic, that is to say comprises two portions of branch which can slide while remaining nested P one in P other, for example P one around P other, which portions are connected and recalled P one towards P another by said spring or return means.
• each branch comprises support means for pressing (and / or applying) a part of the branch adjacent to the ocular screen (or screens), against a part of the edge of a plays the cap (and / or helmet); these means facilitate the application of glasses against the wearer's face.
• each of these branch portions is preferably connected to the lateral edge of the screen by a deformable connection, in particular by an articulation comprising a pivot, a hinge or a ball joint.
• each of the branches preferably comprises a first articulation connecting said telescopic part of the branch (which is equipped with a pivot for fixing to the cap) to said portion of branch adjacent to the screen; preferably again, each branch includes:
• glasses are proposed to be fixed to a helmet by two branches, which comprise two screens or portions of screens or monocular ophthalmic lenses which are connected by a trigger guard having a lower notch, in which the trigger guard is provided with a means (such as a pivot or a hinge with a substantially vertical axis) for the mutual pivoting of two screens or screen portions;
• a means such as a pivot or a hinge with a substantially vertical axis
• the face comprising the two screens or screen portions, a first configuration in which P relative inclination of the screens or lenses is adapted to the morphology of the wearer's face, as well as a second configuration in which P relative inclination of the screens or lenses is adapted to the curvature of the external face of the external cap; this allows the glasses to be intimately pressed against the face in the active position, and allows them to be pressed against the cap in the retracted position.
• glasses are proposed to be fixed on a helmet, comprising a binocular screen or two monocular screens and a frame for connecting the screen (or screens) to the helmet; the glasses have two branches which are each equipped with a pivot for attachment to the helmet; each branch has a deformable structure preferably comprising two movable portions P one with respect to P other and a return spring which tends to fold, bend and / or shorten each branch, to press the screen (or the screens) against the face of the helmet wearer.
• P screen (or screens) or lens (s) is (are) integral (s) with a central gripping appendage facilitating the movement of P optical screen (or screens) by the wearer of the helmet and glasses, with one hand; this appendage preferably extends above the trigger guard and the face, and / or in the extension thereof;
• the appendage can for example take the form of a horizontal bar connecting the two monocular screens.
• the device according to the invention for assembling the glasses to the cap allows automatic adjustment and adaptation (in depth) of the position of the glasses relative to the cap; the wearer (motorcyclist in particular) can easily and quickly retract the glasses on the front of the helmet and thus free his field of vision, in the event of an urgent need; this adaptation is particularly facilitated when each branch has two pivot or ball hinges, which allow movement - at least in translation - of the glasses relative to the helmet, along two or three axes or directions; this double articulation facilitates the retraction of the glasses outside of the helmet as well as the application of the glasses against the wearer's face.
• the glasses according to the invention can easily be fitted with filtering and / or corrective lenses or glasses, which can be fixedly attached to the frame in a removable manner, in order to facilitate their replacement.
• FIG. 1 schematically illustrates, in sectional view through a horizontal anteroposterior plane, a preferred mode of glasses according to the invention, which are secured to a helmet and in the active position for protecting the wearer's eyes (not shown).
• FIG. 2 illustrates in perspective view a motorcyclist wearing a helmet fitted with retractable glasses according to the invention having a structure similar to that of the glasses of FIG. 1.
• Figure 3 schematically illustrates, in perspective view, from the side, the helmet of Figure 2, the glasses are retracted.
• Figure 4 is an enlarged view of a telescopic part of a branch of the glasses of Figure 1.
• Figure 5 is a view similar to that of Figure 2, which illustrates an alternative embodiment of a frame according to the invention which is fitted with removable glasses.
• FIG. 5 is a view similar to that of FIG. 2, which illustrates an alternative embodiment of a frame according to the invention which covers a pair of eyeglasses worn by the wearer of the helmet.
• the pair of glasses fitted to the helmet 1 comprises two monocular screens 2 and 3 which are connected by a trigger guard in two parts 4, 5 articulated along a vertical axis 6, by means of an integrated hinge 15 to the trigger guard and connecting these two parts.
• Each of the two branches of glasses has three main parts: a first part 7, 8 of elongated shape along an axis 51, is connected, by its internal end 41, 42, to the respective lateral edge 2a, 3a of the lenses or screens 2 , 3, by the intermediary of a hinge 30 with a vertical axis 10, that is to say substantially parallel to the axis 6 of articulation of the trigger guard; a second part 20 in the form of a substantially horizontal axis rod 52, is fitted at its rear end with a stop 53 (FIG.
• a third part 21 of elongated shape e from front to back, substantially along said axis 52, is integral with the outer cap
• the assembly has symmetry along a vertical anteroposterior plane, the trace of which in the plane of FIG. 1 is identified 50.
• the third branch part 21 has a longitudinal cavity
• this axis spring 52 which extends around the rear part of the rod 20, between the stop 53 equipping this rod and the stop e
• this spring also brings the part 7 (respectively 8) towards the pivot 18 as well as the glasses screen secured to the latter, while allowing them to be moved away from the pivot 18: under P effect of a pull towards P before exerted by the wearer of the helmet, with a view to retracting the glasses on the external front part of the outer shell of the helmet, the spring 23 is compressed between the stops 53 and 55, as the telescopic part 20, 21 of the branch is deployed.
• each part 7, 8 is provided with a face 40 of beveled sliding support e, that is to say inclined e (by an angle for example close to 45 degree s) relative to the longitudinal axis 51 of the part 7, 8; in a complementary way, P front end of each part 21 is provided with a face 45 of beveled sliding support e, that is to say inclined e (by an angle for example close to 45 degrees s) by relative to the longitudinal axis 52 of the part 21; thus, when the parts 7 (or 8) and 21 approach one of P another under the action of the spring 23, they come into contact by their respective inclined bearing face, in a zone 47 extending to the beyond the pivot 31, by reference to the median plane 50; under P persistent spring return effect, the parts 7 (or 8) and 21 then move P one relative to P other according to a rotation represented by the arrow 46 figurel.
• each part 21 preferably presents a curvature identical to (or close to) that of the external face of the external cap in the region surrounding the pivot 18; the face 49 may also include a means - such as pads - favoring the sliding of this face against the cap 11.
• the rod 20 and the cavity 54 of the part 21 can also be curved according to a radius close to the radius of curvature of the outer face of the cap, in order to allow the frame to be fitted with a pivoting portion 21 of branch whose thickness is reduced, so as to reduce its grip in the wind.
• the rod 20 can be replaced by a blade or strip, for example metallic.
• each of the two lenses of the frame can, as shown for lens 3, be secured to the arcade 70 and the trigger guard 5 of the frame, passing according to the arrow illustrated on this figure, from the position of attachment to the frame represented in dotted lines, to a configuration of attachment shown in solid lines; conversely, the attachment of the lens to the frame can be obtained by fitting into a groove provided in parts 4, 5, 70 of the frame.
• the frame according to the invention equipped with its two lenses 2, 3 covers the lenses 80 with an ordinary pair of glasses worn by the wearer of the helmet, by wrapping the latter and protecting the eyes.
• the frame portion encircling the lenses 2, 3 is preferably provided, on its internal face facing the wearer's face, with a formable spacer such as a bead or bead (reference 90 in FIG. 1) made in a compressible material such as synthetic foam.

Landscapes

• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• General Physics & Mathematics (AREA)
• Ophthalmology & Optometry (AREA)
• Optics & Photonics (AREA)
• Helmets And Other Head Coverings (AREA)
• Eyeglasses (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=32893158

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (2)

Family Cites Families (18)

• 2003
  • 2003-03-10 FR FR0302911A patent/FR2852208B1/fr not_active Expired - Fee Related
• 2004
  • 2004-03-09 WO PCT/FR2004/000553 patent/WO2004080224A1/fr not_active Application Discontinuation
  • 2004-03-09 EP EP04718666A patent/EP1601260A1/de not_active Withdrawn
  • 2004-03-09 US US10/548,695 patent/US20060185051A1/en not_active Abandoned
  • 2004-03-09 CA CA002518739A patent/CA2518739A1/fr not_active Abandoned

Non-Patent Citations (1)

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