FR2846434A1 - SCREEN FOR EYEGLASSES AND PARTS FOR THE MANUFACTURE OF SUCH A SCREEN - Google Patents

Abstract

The present invention relates to a part for fixing a screen pierced with at least one orifice to glasses, which comprises a part or pin capable of extending into the orifice of the screen, characterized in that it comprises at least one bearing face portion capable of sliding on the edge of a lens or on the spectacle frame.

Description

i Screen for glasses and parts for the manufacture of such a screen La

  The present invention relates to removable screens for glasses, hook-shaped parts for fixing a screen to glasses, and to a lens assembly part to form a removable binocular screen for glasses.

  The technical field of the invention is that of the manufacture of glasses.

  The invention is particularly applicable to devices for fixing a lens or screen, monocular or binocular, to a pair of glasses, which comprise a pin or pin, deformable or elastic, which is designed to extend through 10 d '' a channel - or through orifice - drilled in the screen - or glass - to be fixed, and which further comprise a fixing lug capable of overlapping the edge of a glass or

a spectacle frame.

  Application WO 97/19384 describes several embodiments of such a pin, as well as several embodiments of such a fixing lug; this document further describes a binocular screen comprising a curved and elongated part, which is used to assemble two screens to form a binocular screen; at each end of this part is integrated or fixed a fixing lug; in some embodiments, the fixing tab has two pierced tabs

  each of an orifice; the tabs and the holes face each other.

  Attaching each bracket to the screen with a pin is tricky due to the small dimensions of these parts; this drawback is

  greatly reduced when the pin and lug are in one piece.

  Application WO 98/39681 describes a hook for fixing a screen to

  goggles which has such a pin or pin and such a fixing tab or arch, which overcomes this drawback.

  The object of the present invention is to provide such a hook which is further improved. The invention also aims to provide a binocular screen for glasses which is improved, as well as a kit specially designed to allow the manufacture, by an optician, individually and on demand, of a monocular or binocular screen of shape and dimensions adapted to that of a determined pair of glasses.

  Another object of the invention is also to remedy, at least in part, the drawbacks of known screen fixing parts and additional screens for glasses.

  According to a first aspect of the invention, there is provided an attachment - or fixing piece - for removably securing a screen pierced with orifices to glasses comprising glasses and a frame; the fastener comprises a pin capable of extending into one of the orifices of the screen, and a portion - or jumper - integral with the pin and able to overlap the edge of one of the lenses and / or of the frame; the fastener further comprises at least one support portion, preferably a support face portion, in particular one or more support face (s), which is (are) able (s) to slide on the edge of a spectacle lens and / or on the frame, so as to allow the screen to be secured to the spectacles, by a substantially elastic deformation of the fastener - in particular of said portion or rider -, without requiring manipulation - or manual or digital action - direct, by the user, on the fastener, to cause this deformation; the invention enables engagement of the rider with the periphery of the lens and / or of the frame, by movement and thrust of the screen 20 in the direction of the spectacle lens, until engagement of the lens or the frame in

  a groove or notch in the fastener.

  A screen provided with such attachments is easier to attach to a pair of glasses than the attachments described in WO 98/39681; preferably, a monocular screen according to the invention has three fasteners fixed to the periphery of the screen: two fasteners are arranged along the upper edge of the screen so as to be able to engage near the trigger guard and the tenon a pair of glasses, while a third clip is arranged along the lower edge of the screen, preferably off-center - on the temporal side of the pair of glasses; in the case of a screen having such a configuration, the notches of the two upper fasteners 30 of the screen can be fitted around the edge of the glass or of the spectacle frame, the screen being kept slightly inclined relative to the glass ; by a subsequent pivoting movement of the screen relative to the glass, the lower clip is brought into contact with the lower part of the edge of the spectacle lens, by its sliding bearing face; the continuation of this movement provokes the crossing of the edge of the glass by the sliding bearing face, thanks to the deformation of the lower fastener, until engagement of the edge of the glass in the groove or notch of

  the lower clip (see Figures 5 to 7 in particular).

  The configuration of the fasteners according to the invention also makes it possible to secure a screen to a glass by presenting the screen facing the glass, by arranging the respective sliding bearing faces of the three fasteners, in contact with three zones of the edge of the glass. or of the spectacle frame, then pushing the screen against the lens in a translational movement, until engagement of the three notches on the edge 10 of the lens or of the frame; these operations can thus be carried out with a single

hand by the wearer of the glasses.

  Said face or portion of sliding bearing face may be left; according to a

  preferred embodiment, it is however substantially planar.

  In order to facilitate the sliding of the fastener against the lens or the frame of glasses, this face or portion of sliding sliding face is preferably inclined, relative to the longitudinal axis of the spindle, by an angle situated in a range from 15 to 75 degrees, preferably of the order of 30 to 60 degrees, in particular close to 40 to 50 degrees. When the bearing face is left, this angle can of course vary by

part to the other of this face.

  The part of the clip in the form of a jumper, which is intended to overlap the edge of the lens or of the spectacle frame, has a groove or notch of width adapted to the thickness of the lens or of the frame; this width is

  usually in the range of about 1 to 5 mm.

  According to another aspect of the invention, there is provided a fastener for fixing a screen to glasses, the fastener comprising a U-shaped portion or rider capable of

  overlap the edge of the lens and / or the spectacle frame, this portion or rider defining a groove or notch having a bottom and a mouth; in order to improve the holding in position of fixing the screen to the glasses, the width of the mouth of the groove is narrowed, that is to say less than the maximum width 30 of the groove or notch.

  According to a preferred embodiment, the groove or notch is delimited by a first planar face situated on the side of the spindle, by a second planar face forming the bottom of the groove and intended to cover a portion of the glass or frame wafer , and by a third face located on the side of the inclined face of sliding support 5; the first and second faces are substantially perpendicular, while the third face, which can be flat or on the contrary left, is inclined relative to the first face so as to delimit with the first and second faces

  a groove or notch flared towards its bottom and / or with narrowed opening.

  According to another aspect of the invention, there is provided a removable attachment piece 10 from an optical screen to a pair of glasses which comprises a pin capable of extending through an orifice passing through the periphery of the screen. , a deformable elongated central part, and a tapered asperity - in the form of a tooth, beard or barb which extends at the free end of the deformable elongated central part; preferably, this roughness is partly delimited by said sliding bearing face on the one hand, and by said third face of the groove on the other hand; the central part is thus able to

overlap the edge of the glass.

  According to another aspect of the invention, there is provided a clip for fixing a screen to glasses, which comprises a pin provided with three stops: a first stop capable of extending in contact with a rear face d 'a screen, a second stop capable of extending in contact with a front face of a screen, as well as a third stop capable of extending in contact with a part of a connecting piece of two

  monocular screens of a binocular screen.

  According to another aspect of the invention, a connecting piece is proposed for connecting two monocular screens to one another, to form a binocular screen suitable for a pair of glasses; the connecting piece comprises a central part elongated along a longitudinal axis, and two jumpers - preferably identical - respectively provided - in particular incorporated - at each longitudinal end of the elongated central part; each jumper has two tongues facing each other, substantially parallel to each other, and each pierced with a orifice for the passage of a pin of a fastener for a screen; the connecting piece has a symmetry with respect to a median anteroposterior plane, and the normal to the plane of each tongue is inclined with respect to the plane of symmetry of the connecting piece; this makes it possible to connect together two monocular screens having a curvature, while maintaining

  their respective optical axes substantially parallel.

  According to another aspect of the invention, a connecting piece is proposed for connecting together two monocular screens, which has an elongated central part 5 along a longitudinal axis, and two jumpers respectively provided at each longitudinal end of the elongated central part; each jumper has two tongues facing each other, substantially parallel to each other, and each pierced with a hole for the passage of a pin of a clip of a screen; a first tab of each jumper is pierced with a first orifice having a first diameter; a second tab of each rider is pierced with a second orifice having a second diameter, the value of which is greater than that of the first diameter; for each jumper, the first port is substantially aligned with the second port; thus, in the first orifice can extend a spindle part having a first size, while in the second orifice can extend a spindle part having a second size larger than the first size; this facilitates reliable attachment of a screen to the jumper of the connecting piece, by means of a fastener comprising a cylindrical pin having several (in particular two) adjacent projecting stops along the pin. Preferably, the hooks or fasteners according to the invention are obtained directly or not., By injection of a plastic material, in a multi-cavity mold to form a cluster of fasteners, while the fastening part is obtained directly or not - by cutting, drilling, folding a sheet of metal; more preferably, the joining piece of two screens is obtained from a steel sheet having a thickness less than or equal to 5 × 10 -4 meters and generally at least equal to 10 -4 meters; this makes it possible to obtain a robust, light, aesthetic binocular screen, and makes it possible, thanks in particular to its elasticity, to use a single connecting piece for manufacturing binocular screens of shapes

  and dimensions adapted to several different models of spectacle frames.

  According to other aspects of the invention, there are proposed removable optical screens for spectacles, which incorporate these fasteners or hooks, and where appropriate such connecting parts of two monocular screens, as well as kits of parts for the manufacture of these screens; the invention is particularly applicable to the

production of filter screens.

  Other advantages and characteristics of the invention will be understood through

  of the following description which refers to the accompanying drawings, and which illustrates without any

  limiting character of the preferred embodiments of the invention. FIG. 1 illustrates in schematic perspective view a pair of glasses, as well as a binocular screen of shape and dimensions adapted to the pair of glasses,

  this screen being represented in front of the glasses of the pair of glasses.

  FIG. 2 illustrates in side view a hook for fixing a screen to glasses, according to a first preferred embodiment of the invention.

  FIG. 3 schematically illustrates in side view a screen equipped in its upper part and in its lower part with a connecting hook similar to that

illustrated in figure 2.

  FIG. 4 illustrates the screen of FIG. 3, as well as a glass of a pair of glasses, in a position for fitting the screen by its upper attachment to the upper edge of the glass, before engagement of the '' lower attachment secured to

  the screen with the edge of the spectacle lens.

  FIGS. 5 to 7 successively illustrate three stages of engagement of a screen attachment to a spectacle lens, in schematic side view: in the configuration illustrated in FIG. 5, the screen attachment hook is supported by its face support

  against the edge of the glass; in the configuration illustrated in FIG. 6, the tooth of the screen attachment is substantially in contact with the middle part of the edge of the glass, while in the configuration illustrated in FIG. 7, the tooth-shaped portion of the attachment d the screen has passed the edge of the spectacle lens, and the clip is fitted around a part of the edge of this lens.

  Figures 8 to 11 illustrate a connecting piece of two monocular screens used to assemble these two screens to form a binocular screen such as that illustrated in Figure 1; Figure 8 is a side view of the connecting piece; Figure 9 is a top view of the part of Figure 8 and is a view along IX of Figure 8; FIG. 10 is a top view of the same part, prior to the folding of the tabs of the jumpers provided at each of the two ends of the connecting part; Figure 11 is a side view of one of the jumpers provided at each end of this

  connecting piece and is a view along Xl of FIG. 8.

  Figure 12 illustrates in schematic sectional view a hook for attaching a binocular screen to a spectacle frame; this figure illustrates more particularly the screen attachment after cutting its tapered end, the screen attachment hook being provided with a pin extending through the holes respectively drilled in the walls of a jumper of a connecting piece, and in

the screen to attach to the glasses.

  Figure 13 is a schematic perspective view of an embodiment of a screen attachment similar to that illustrated in the preceding figures.

  With reference to FIG. 1, the pair 1 of glasses has two lenses 3 framed by a frame 4, as well as two arms 2 mounted articulated by

compared to the frame 4.

  The binocular screen 5 comprises two monocular glasses or screens 6 which are connected by a connecting piece 7, each screen comprising three fasteners or hooks 8

  used to secure the removable screen 5 to the frame 4 of the pair 1 of glasses; as illustrated in this figure, for each screen 6, two fasteners 8 serve only to secure the screen to the pair of glasses, while a fastener 8 disposed in the upper and internal (or nasal) part of the screen 6, serves furthermore to secure the end of the connecting piece 7 to the screen.

  With reference to FIGS. 2 to 7 and 13 in particular, the fastener 8 comprises a pin 9 secured to three parts 10, 11 and 12 forming a jumper defining a groove or notch 16 and serving to overlap the edge of a spectacle lens or

  a frame of a pair of glasses.

  The spindle 9, made of easily breakable plastic, is in the form of a cylinder section 90, 92 extending along a longitudinal axis 98 and having a tapered tip 91 facilitating the introduction of the spindle into an orifice

pierced into a screen.

  The cylindrical part 90, 92 of the spindle comprises two annular protrusions 94 and 95 forming two stops, as well as a face 93 for interface between the spindle 9 and the part 10 of the jumper, this face 93 also serving as a stop; the stops 93 and 94 which are spaced apart by a distance 96 along the axis 98, are respectively intended to come into contact with the rear face (mark 60 in figure 3) and the front face (mark 61 in figure 3) d 'a screen; for this purpose, the distance 96 separating them is slightly less than the thickness of the screen in the drilling area of the orifice through which this part 92 of the spindle must extend. The second annular stop 95 adjacent to the stop 94 is eliminated when the fastener or hook 8 is used to only secure part of the screen 6 to the pair of glasses; this stop 95 is on the other hand retained when the fastener or hook 8 is used to secure both the screen and the connecting piece 7 between two monocular screens, to the spectacle frame 4, as illustrated in FIGS. 1 and 12; for this purpose, the distance 97 separating the stop 95 from the stop 93 is adapted to the thickness of the screen 6 increased by the thickness of the two tabs of the jumper provided at the end of the connecting piece 7, so that the stop 95 comes into contact and bears on the face

  external of the jumper, as illustrated in figure 12.

  The jumper-shaped part consisting of the three portions 10, 11 and 12 of the fastener 8, which is made of the same easily deformable plastic material (in particular polyurethane) as the pin 9, has a substantially flat side face 13 and orthogonal to axis 98, a substantially flat bottom face 14 also and parallel to axis 98, and a third curved face 15, these three faces 13 20 to 15 delimiting the groove or notch 16 serving to receive a portion of wafer of glass; the end 12 of this rider-shaped part is tapered and has a sliding support face 17 whose function is clearly seen in the illustrations of FIGS. 5 to 7 showing the operations of progressive engagement and deformation of the fastener for securing the screen to a spectacle lens; the faces 15 and 17 of 25 the part 12 of the rider ends in a point 18 intended to come into contact with the rear face of the lens or of the spectacle frame to which the screen must be fixed by

  through this fastener 8.

  FIG. 3 illustrates the screen 6, in which two holes 62 and 63 have been drilled near the edge of the screen; in each of these orifices has been engaged the pin of each of the two fasteners 8 illustrated in this figure, until extraction from the orifice of the stop 94 fitted to the pin, and cutting of the unused end

  of the spindle in front of the stop 94.

  With reference to FIG. 4, the upper attachment 8 linked to the screen 6 has been engaged by sliding around the edge 30 of the spectacle lens, in the upper part thereof, of the notch or groove 16 delimited by clip 8; to secure the screen 6 to the glass 3, it then suffices to move the screen 6 relative to the glass 3 according to the arrow 5 99 illustrated in FIG. 4, that is to say substantially according to a pivoting movement along an axis perpendicular to the plane of the figure and approximately located at the location marked 100 in this figure, which corresponds substantially to the center of the notch 16 of the upper clip 8, and! or at a tangent to the edge 30 of the glass 3. With reference to FIGS. 5 to 7, this engagement of the lower clip 8 is effected by placing the tooth-shaped part 12 of the clip 8 in contact with the lower edge 31 of the glass 3, by a push along the arrow 99 exerted on the screen 6; with reference to FIG. 6, the continuous exercise of this thrust 99 causes the deformation of the parts 11 and 12 of the fastener 8 and the progressive crossing of the lower edge 31 of the glass 3 by the tip 18 of the fastener 8 which connects the 17 and previously described faces of part 12 of this fastener, until one obtains, as illustrated in FIG. 7, an engagement of the edge 31 of the glass 3 in

  the notch 16 delimited by the fastener.

  With reference to FIGS. 8 to 11, the connecting piece 7 between two screens 20 -monoculars comprises a blade 71 whose thickness 72 is for example close to -0.3 mm, which is curved along a radius 73, for example close 30 mm, and which

  has a general symmetry with respect to a median anteroposterior plane 70.

  At each end of the blade 71 is provided a jumper 74, 75 respectively, which comprises, as illustrated in particular in FIG. 11, three portions of planar walls 25 forming in side view a U-shaped jumper: a plane wall 101 s extending from

  inclined relative to the end of the blade 71, and two portions of plane walls 77 and 78 or tongues, which extend in planes perpendicular to the plane of the wall 101 of the rider; each tongue 77, 78 is respectively pierced with an orifice 103, 104 whose dimensions are slightly different, and which are aligned along a common axis 102 inclined relative to the median anteroposterior plane 70 of the part.

  The blade 71 extends along a longitudinal axis 76, while the tongues 77 and 78 extend, when the part is formed (after folding), parallel to a plane 79 forming an angle 110 with the longitudinal axis 76 of the blade, so as to facilitate obtaining a binocular screen, the respective optical axes of the two monocular screens are substantially parallel; the axis 102 of the holes drilled in the tongues 77, 78, which is normal to the plane 79 of these tongues, is inclined by the same

  angle with respect to the median anteroposterior plane 70 of the part.

  With reference to FIG. 12, in the assembly position of a screen and a jumper of a connecting piece by the fixing piece 8 in accordance with the invention, the first stop 94 is deformed and compressed radially at the interior of the orifice drilled in the screen 6, while the second stop 95 rests on the tongue 77 of the

jumper of the connecting piece.

  As illustrated in FIG. 2 in particular, the sliding support face 17 is inclined relative to an axis parallel to the longitudinal axis 98 of the spindle 9, by an angle 170

close to 30 to 60 degrees.

Claims (14)

  1. Piece (8) for fixing a screen (5, 6) pierced with at least one orifice (62, 63) to glasses (1), which comprises a part or pin (9) able to extend in the orifice of the screen, characterized in that it comprises at least one portion or support face (17) capable of sliding on the edge (30, 31) of a glass (3) or on the frame (4) for glasses.   2. Part according to claim 1, wherein the face or portion of sliding bearing face is inclined relative to the longitudinal axis (98) of the spindle by an angle (170)   located in a range from 15 to 75 degrees.   3. Part according to claim 1 or 2, which comprises a part (10, 11, 12) or deformable rider which is integral with the spindle and the sliding bearing face, which is   suitable for overlapping the edge of a lens or the frame of glasses.   4. Part according to claim 3, which comprises a U-shaped part or jumper which   delimits a groove or notch (16) having a narrowed mouth.   5. Part according to claim 4, wherein the groove or notch is delimited by a first flat face (13) located on the side of the spindle, by a second flat face (14) forming the bottom of the groove and intended to cover a portion of the glass or frame wafer, and by a third face (15) situated on the side of the inclined face of sliding support, the first and second faces being substantially perpendicular, while the third face, which can be flat or on the contrary left, is inclined with respect to the first face so as to delimit with   the first and second faces of said groove or notch.   6. Part according to any one of claims 1 to 5, which comprises a deformable elongated central part (11), and an asperity (12) tapered in the form of a tooth, beard or barb - which extends at the end free from the elongated central part   deformable. 7. Part according to claim 6, in which the roughness is partly delimited by said sliding bearing face on the one hand, and by said third face of the groove or notch on the other hand. - - - 2846434   8. Part according to any one of claims 1 to 7, wherein the spindle has a first stop (93) adapted to extend in contact with a rear face (60) of a screen, a second stop (94 ) able to extend in contact with a front face (61) of a screen, as well as a third stop (95) able to extend in contact with a part   (77) of a part (7) connecting two monocular screens of a binocular screen.   9. Removable monocular screen for spectacles, comprising an optical part (6) pierced with orifices (62, 63) and parts (8) according to any one of claims   1 to 8, which are respectively engaged by their pin in one of the orifices.   10. Binocular screen (5) comprising two screens according to claim 9 and a connecting piece (7) connecting the two monocular screens.   11. Screen according to claim 10, in which the connecting piece comprises a central part (71) elongated along a longitudinal axis (76), and two jumpers (74, 75) respectively provided at each longitudinal end of the part. elongated central unit, each jumper comprising two tongues (77, 78) facing each other, substantially parallel to each other, and each pierced with an orifice (103, 104) for the passage of a pin of a screen attachment, the connecting piece having a symmetry with respect to a median anteroposterior plane (70), and the normal (102) to the plane of each tongue being inclined relative to the plane of symmetry of the connecting piece. 12. Screen according to claim 10 or 11, in which the connecting piece (7) comprises a central part (71) elongated along a longitudinal axis (76), two jumpers (74, 75) respectively provided at each end longitudinal of the elongated central part, each rider comprising two tongues (77, 78) facing each other, each pierced with an orifice (103, 104) for the passage of a pin of a fastener 25 of a screen, a first tongue of each rider being pierced with a first orifice having a first diameter, a second tongue of each rider being pierced with a second orifice having a second diameter whose value is greater than that of the first diameter, and for each rider, the first port   being substantially aligned with the second port.   13. Screen according to any one of claims 10 to 12, in which the part   of connection is essentially metallic and has a thickness (72) located in   a range from 10-4 meters to 5 x 10 meters.   14. Kit for the manufacture of a removable optical screen for glasses, which comprises a plurality of parts (8) according to any one of claims 1 to 8, and at least one part (7) for connecting two monocular screens.