FR2692373A1 - Detachable sun visor for protecting eyes of spectacle wearer - comprises semi-rigid curved strip, with slots or other formations cut into end portions for locking engagement with arms of spectacle frame - Google Patents

Abstract

The visor is formed by cutting of a curved strip from a thin sheet of semi-rigid material, including a pair of slots (6,7) close to each of its end portions. Alternatively two oblong holes (16) or at least one tongue portion are formed at the ends of the strip, to allow attachment to the arms of the spectacle frame. The ends (10,12) of the slots are positioned, and the length of the slots selected, such that the spectacle arms (5) pass through each slot in turn. The slots are inclined relative to the axes of the spectacle arms in order to prevent rotational movement of the strip relative to the frame when secured in position. ADVANTAGE - Prevents visor slipping to block forward vision.

Description

l The invention relates to a visor ad aplt-able on a pa re of

  glasses. When you want to protect your eyes from sunlight, sunglasses are commonly used; but as soon as one is obliged to wear glasses with corrective lenses, one immediately encounters difficulties; it is necessary to protect on the one hand from the light arriving from top to bottom but also from the lateral light which introduces parasitic reflections; but we may also need to protect ourselves in the light required to illuminate a working document but too violent in direct incidence on the eyes We can equip our glasses with protective lenses which are of constant or variable shade but often a second pair of glasses with clear lenses is required; Can you buy a frame that has protective tinted lenses and that attaches to the existing pair of glasses? but we do not solve the problem of the light coming from above between the eyebrows and the glasses or laterally between the temple and the glasses We can put a wide-brimmed hat or a peaked cap, or a simple peak with an elastic band to fix it around the head, but many people cannot bear the contact of a headdress or elastic without triggering a migraine The object of the invention is to provide a solution that is both effective and not very expensive to solve this problem which is not at all troublesome to use with glasses with corrective lenses or

  sun, notably having good wind resistance.

  Fig 1 shows the visor according to the invention.

  Fig 2, Fig 3, Fig 4, represent only one end of the visor, with variants relating to

  the means of attachment to the branches of glasses.

  Fig 5 shows the visor according to the invention set

place on a pair of glasses.

  Fig 6 shows on the one hand a variant of the method of fixing in place on a pair of glasses, on the other hand

  a visor made up of several elements.

  Fig 7, Fig 8, Fig 9 show the use of pairs of close slots to fix the visor on the

branch of glasses.

  Fig 10 shows the use of oblong slots.

  Figs 11, Fig 12, Fig 13 show creases and cutouts in the visor making it possible to vary its curvature. Figs 14 and Fig 15 show the use of snap-on tabs to secure the visor to the spectacle arms. Fig 16, Fig 17, Fig 18 show the use of locking tabs to fix the visors to

branch of glasses.

  The Figs 19, Fig 20, Fig 21 represent visors on which we have added decor or enhancement elements. Fig 22 is a variant of Fig 6 with regard to the

method of attachment to glasses.

  Fig 23 shows a variant of the method of fixing the

visor on the branches of glasses.

  The invention consists in producing a simple visor Fig 1, in a thin plate of semi-rigid and preferably light material, capable of being fixed on the glasses Fig 5 which serve as its support; it can also be fixed on a frame comprising lateral branches having the same characteristics as those belonging to glasses; in what follows we will take as an example only the case of the glasses being understood that all that is explained also applies to a frame of the type which we have just described This visor Fig 1 comprises a concave cutout (1) which marries approximately the shape of the forehead when the visor is in place on the glasses; but the visor must not touch the forehead, so as not to create efforts tending to move the glasses and cause significant discomfort; opposite the visor comprises a convex cutout (2) so as to delimit a surface substantially in the shape of a crescent The ends (3) comprise the fastening elements (4) on the spectacle arms (5) Fig 5; all known fixing methods, making it possible to assemble a semi-rigid thin sheet and a rigid rod are within the scope of the invention, provided that they constitute an assembly blocked in rotation in at least one direction; indeed, it is essential that when the visor (14) Fig 5 is fixed on the glasses arms (5) it cannot tilt forward and hide these latter In the preferred version of '1 invention, the ends ( 3) of the visor (14) comprise at least two slots (6) and (7), preferably substantially parallel, in which the branches of the glasses (5) are passed; the length of the slots (6) and (7), their orientation, and their distance (8) is determined experimentally to meet the principles set out. For example, two slots (6) and (7) can be used which are parallel it is advantageous to end with roundings (9) at the ends to avoid tearing incidences; ia length of the slots (6) and (7) is sufficient to allow the passage of branches of glasses (5) of different width and thickness; when the visor is in place Fig 5, ie in abutment down, each branch is supported on the upper end (10) of the slot (6) closest to the glasses (11) and on the 'lower end (12) of the slot (7) closest to the part (13) in contact with the ear; the visor (14) is thus blocked in downward rotation; the distance between these two support points (10) and (12) can vary depending on the materials used, but the greater the distance, the more precise the positioning of the visor (14) relative to the glasses. These explanations concerning the positioning of the visor are valid for all the variants which we will describe below, without it being necessary to specify it expressly in the text It is possible to provide more than two slots (15) Fig 2 to allow in particular to adapt the visor to glasses of different sizes, depending on whether it is an adult or child user, and also to allow several possible positions or shape of the visor with respect to the glasses, depending on whether one wants to round more or less the visor or bring it closer or away from the forehead; the slots can also have different sizes to possibly adapt to branches of glasses of very different widths; The slots can be grouped in pairs to form a hooking device (25) Fig 7 which can include grooves (26) Fig 8 which favor the folding of the zone (27) located between the slots relative to the visor ( 28) which keeps a continuous profile; we can use several of these groups of slots (29) Fig 9 to better stabilize the visor or give it a different position We can replace the slots which have the advantage of not having any waste to eliminate during cutting, by oblong openings (16) Fig 3 allowing easier fitting of the spectacle arms and positioning

  without excessive deformation of the semi-rigid thin plate.

  These oblong openings (30) Fig 10 can also be used in pairs as we have previously described for the slots In a variant of the invention, it is possible to combine the use of a pair of slots (34) Fig (14 ) with a first cut tongue (35), which clips onto the upper part of the lens branch (37) and prevents the visor from tilting forward and possibly a second tongue (36) which also clips onto the upper part of the lens branch (37) and prevents the visor from tilting backwards at O 20, thus completing the locking of the assembly; you can also cut the tabs so that they clip onto the lower edge of the telescope branch, obtaining the same result In another variant of the invention, the pair of slots (34) Fig 14 is replaced by a cut tab (38) Fig 15 being clipped onto the upper part of the spectacle branch while two other tabs (39) and (40) are clipped onto the lower part of the spectacle branch; we can reverse the direction of clipping of each of the three tabs without changing the result In another variant of the invention, the area which initially included the pair of slots (34) Fig 14 may include an opening (41) Fig 16 substantially rectangular and a tongue (42) coming from the cut of the visor (43) comes by folding around the telescope branch (44) and is locked in the opening (41) thanks to a zone (45) widened at its end to form a retainer It is also possible to use an attachment using an attached piece (46) Fig 17 which slides substantially parallel to in slots (47) and (48) branches of glasses (49); this insert (50) Fig 18 can be permanently fixed On the visor (51) using for example a rivet (52) In a variant of the invention the slots are open out on the edges of the visor , on the side where they are not supported on the branches of glasses; the slot (17) Fig 4 and Fig 6 located near the glasses (18) is opening down and the other (19) is opening up; they can be widened to facilitate installation on the arms and at least one of the two slots (17) or (19) may have a return (O 20) to ensure a certain locking of the lens arm (21) In a variant of this version of the invention Fig 22, the rotation can be blocked downwards by simply pressing the visor (59) directly on the frame (60) supporting the glasses; the visor is put in place without removing the glasses thanks to the through slot (61) and its retaining device (62) which ends in the shape of ear cups and which can constitute a support on the temples We can also obtain the same result making an "S" shaped slit; one end of the "S" (63) Fig 23, located near the glasses (64) is facing up, the other end (65) is facing down; they serve as a stop to prevent the visor (66) from tilting forward; the visor thus described can be put in place without removing the glasses. All the variants that we have just described concerning the fastening systems can be combined with one another and form part of the field of the invention. In order to allow the visor made of semi-rigid thin material to take a desired shape, it is possible to vary the rigidity from one zone to another and therefore to vary its curvature; it can be done by creasing (31) Fig 11, staggered circular perforations (32) Fig 12, or elongated perforations (33) Fig 13 or any form of perforation making it possible to weaken the rigidity of the thin sheet constituting the visor; the choice of these techniques depends on the material used for the visor and on the aesthetic appearance that one wishes to give. In most of the solutions described, it is considered that the material used has a natural elasticity which facilitates holding the visor in place ( 14) Fig 5 or ({22) Fig 6 which having been bent during the fitting acts on the spectacle arms (5) or <21) as if to spread them apart The visor (14), as we have described it with its various variants concerning the fixing means, is generally produced in a single operation for cutting a thin plate. This visor can be decorated by printing before cutting or after cutting; we can add elements to enrich the decoration, for example by doubling the visor (53) Fig 19 with another thin plate (54) semi-rigid of different color fixed by a known process such as riveting (55) or bonding, which, for example, protrudes forward and appears through holes (56) made in the main visor (53); we can also associate with the visor (58) an added edge (56) Fig 20, and even a transparent wall (57) Fig 21 tinted which is positioned in front of the glasses The thin material used to make this visor can be chosen in what is available on the market, from the cardboard sheet to the plastic sheet of the polypropylene type passing through all the intermediate products and composites which can possibly be clothed. A disadvantage of this visor is to occupy a large surface which makes it difficult to transport in a pocket if you don't want to or if you can't fold it; in a variant of the invention the visor (22) consists of at least two elements (23) and (24) capable of being assembled together before being fixed to the branches of glasses (21); the natural elasticity of these semi-rigid materials is used to hold the elements (23) and (24) in place as soon as the visor (22) is curved so as to be fixed to the branches of glasses (21); such a variant allows to carry in his pockets or even a

  wears a visor which occupies little space.

Claims (9)

  1-Eye protection visor characterized in that it is produced by cutting a thin semi-rigid plate, with all or part of its own fixing means making it possible to fix it directly on a pair of glasses. 2-eye protection visor according to the preceding claim, characterized in that the fixing means is constituted by at least two slots (6) and (7) and or at least two oblong openings (16) and or at least one snap-on tab (35) and or lockable with at least one cut tab (42), -and or attached (46 located at the   near each end of the visor.   3-Eye protection visor, according to any one   of the preceding claims characterized in that the   relative position of the ends (10) and (12) of the slots (6) and (7), their length and their distance (8), and or equivalent elements, in the case of oblong slots and or of tongues, are determined to position the visor (i 4) so that it is at least locked in downward rotation so as not to mask the glasses by tilting.   4-eye protection visor, according to claim 1 characterized in that the fixing means consist of slots (17) and (19), which can be widened, and which open out on the side opposite to the support points on the branches of glasses, either constituted by an "S" shaped slot at the ends (63) and (65) serve as points of support for the branches of glasses, to   to facilitate the fixing of the visor.   5-Eye protection visor according to any one of the preceding claims, characterized in that the rotation lock is obtained by direct pressing on the frame (60) supporting the glasses, which makes it possible to eliminate the various kinds of supports on the branches of glasses located near the glasses.   6-Eye protection visor, according to any one   of the preceding claims characterized in that the   visor (22) consists of at least two elements (23) and (24) capable of being assembled and held together by the elasticity of the material constituting the visor (22) when it is curved to be fixed on Branches glasses (21).   7-Eye protection visor, according to any one   of the preceding claims characterized in that the   curvature of the visor can be modified by creasing   (31) or perforations (32) or (33).   8-Eye protection visor, according to any one   of the preceding claims, characterized in that it is   associates either another semi-rigid thin plate (54), or a tinted transparent wall (57) which is placed in front of the glasses or at least one border (56) or a combination of these elements.   9-Eye protection visor, according to any one   of the preceding claims characterized in that the   visor can be used as a communication medium.