MONTURE DE LUNETTES SANS BORD COMPRENANT AU MOINS UN ELEMENT DE SERRAGE FLEXIBLE

SPECTACLE FRAME BORDERLESS WITH AT LEAST ONE ELEMENT CLAMP

FLEXIBLE

FIELD GENERAL FOR TECHNICAL AND ART

The present invention relates to the field of spectacle frames and, in particular, an eyeglass frame without edge or breakthrough.

Conventionally, a breakthrough or rimless frame, known under the English name "rimless", comprises two lateral arms and a central bridge are adapted to be connected to two drilled lenses (a left lens and a left lens). Referring to Figure 1, there is shown a pair of spectacles to rimless frame 10 which includes two lenses 2 each connected to a leg 9 and the central bridge 93. For this purpose, each lens 2 comprises at least one branch port 21 adapted to allow the bolting of the branch 9 to the glass 2, and at least one bridge port 22, adapted to allow the bolting of the central bridge 93 by the glass 2. the orifices branch 21 and bridge 22 are drilled in the glass 2. for example, the branch 9 comprises a threaded rod to be slid into the branch port 21 of the lens 2 in order to receive a nut or a plastic chimney wherein a rod can be slid to lock the connection .

In practice, each leg 9 comprises a front part 91 connected to the lens 2 and a rear portion 92 intended to be in contact with the temple of the user, the front 91 and rear 92 are hinged together about a vertical axis Z so as to allow the rear portion 92 of the leg 9 to withdraw.

Mounting a rimless frame is long and complex to implement since the optician must, first, to accurately slide the threaded rod of the branch / bridge in a glass orifice and, hand, screw the nut on the threaded rod inserted in said bore. These operations are even more delicate than the diameter of the nut is less than 1 -2 mm, which obliges the optician to have appropriate tools. Incidentally, it is also known from Patent Application US972053 a rimless frame in which the central bridge comprises a clamp adapted to clamp the edge of the glass. The clamp comprises two jaws connected by a screw for clamping said jaws on the glass so as to secure the central bridge glass. Similarly, the mounting of such a frame is complex to implement since it requires handling a large number of individual pieces with a specific tool.

The invention therefore aims to overcome these disadvantages by offering a rimless edge that is simple and quick to assemble and can be disassembled in a simple manner.

OVERVIEW OF THE INVENTION To this end, the invention relates to a spectacle frame without edge comprising:

- at least one flexible clamp comprising

o at least one connecting portion having at least two jaws adapted to clamp a spectacle lens and

o at least one connecting portion having at least one cavity configured to permit opening of said jaws after a pressure of said cavity, and

- at least one locking member mounted in said cavity of the connecting part of the clamping element so as to lock the closure of said jaws.

Thanks to the invention, the glass of the clamping can be carried out simply and easily by an optician without special tools. Indeed, it suffices for the optician to open the flexible clamp in the manner of a clothes peg order to clamp the glass. The locking element advantageously makes it possible to secure the clamping of the glass by preventing unintentional opening of the clamping element.

Preferably, the locking element is removably mounted in said cavity to allow easy replacement of the frame. In a preferred aspect, said clamping element is in one piece. The number of rooms is limited, the assembly is facilitated.

Preferably, said clamping member is made of plastic so as to be flexible while having a limited cost. It goes without saying that the clamping element could be realized in other materials, e.g., metal.

Preferably, at least one of said jaws comprises at least one tooth adapted to cooperate with an orifice of a spectacle lens, which enables indexing said jaw with respect to the glass and thus allow accurate positioning.

Advantageously, said jaw comprises at least two teeth to prevent rotation between the clamping element and the glass, thereby improving the mounting of the frame.

Preferably, each tooth is tapered to permit a gradual tightening of the glass by the clamping member and a centering. In a preferred aspect, the frame comprises at least one spectacle arm comprising a front portion comprising at least a flexible clamping member and a rear portion comprising at least one locking element. Advantageously, the branch integrates all the elements for clamping the glass. Preferably, the front portion comprises a single flexible clamping element and the rear part comprises a single locking element.

Preferably, the flexible clamp is articulated with the locking member to allow bending of the branch. Thus, the locking element performs a first locking feature and a second hinge function, which is advantageous. Preferably, the rear portion of said arm comprises a first member and a second member which are adjustably connected to permit adjustment of the length of the branches. The frame comprising a central web, said central bridge comprises a main body comprising at least one flexible tensioning element, preferably two, and an auxiliary member having at least one locking element, preferably two. Advantageously, with two clamping elements, the main body connects two lenses together.

Preferably, the auxiliary member comprises a socket adapted to be in contact with the nose of the user. Advantageously, simply choose the auxiliary member whose shape is adapted to the morphology of the user's nose in order to obtain a customized mount at lower costs.

The invention also relates to a pair of spectacles having two lenses and a spectacle frame as set forth above. Preferably, each lens is clamped at its two lateral ends by a clamping element. The invention further relates to a method of mounting a pair of glasses without edge as presented above, the method comprising:

- a cavity pressing step of the flexible clamping member to open the jaws;

- a step of inserting a glass between said jaws;

- a step of stopping the pressure so as to close said jaws and clamping the lens;

- a step of mounting the locking member in said cavity of the clamping element so as to lock the closure of said jaws on the glass.

Such method is advantageous since it can be performed manually and rapidly by an optician. In addition, the removal of the frame remains easy. PRESENTATION OF THE FIGURES

The invention will be better understood from reading the following description given purely by way of example, and referring to the accompanying drawings, wherein:

- Figure 1 is a schematic representation of a pair of spectacles with a pierced frame according to the prior art;

- Figure 2 is a schematic representation of a pair of spectacles with a pierced frame according to the invention;

- Figure 3 is a schematic sectional view of a connection between a glass and the frame arm;

- Figure 4 is a closer view of Figure 3;

- Figure 5 is a schematic perspective view of Figure 3;

- Figure 6 is a schematic sectional view of a connection between a glass and a central bridge of the frame; and

- Figure 7 is a schematic perspective view of Figure 6;

- Figure 8 is a perspective view of another embodiment of a connection between a glass and the frame arm; and

- Figure 9 is a sectional view of certain elements of the branch of Figure 8; and

- Figure 10 is a view of an element of the rear part of the branch of Figure 8.

Note that the figures expose the detailed invention to implement the invention, said figures can of course be used to better define the invention if necessary.

DESCRIPTION OF ONE OR MORE EMBODIMENTS AND IMPLEMENTATION

Referring to Figure 2, there is shown a pair of spectacles 1 comprising a breakthrough or rimless frame, known under the English name "rimless", comprising two lateral arms articulated 3 and a central bridge 6 which are connected to two Rimless 2. Thereafter, the pair of spectacles 1 will be presented in an orthogonal coordinate system (X, Y, Z) in which the X axis extends horizontally and parallel to the lenses 2, the Y axis extends parallel to legs 3 in the use position and the Z axis extends vertically. Referring to Figures 3-5, there is shown a glass 2 extending substantially in a plane (X, Z) called "front side" and having at one end two branch 21 through holes made in this example, by drilling. The orifices leg 21 are vertically aligned along the axis Z. It goes without saying that they may be aligned along any axis belonging to the front plane. As illustrated in Figure 2, each side branch 3 comprises a front part 4 connected to the lens 2 and a rear part 5 intended to be in contact with the temple of the user, the front 4 and rear 5 are hinged together around a vertical axis Z3 so as to enable the rear portion 5 of the arm 3 to retreat. As illustrated in FIGS 3 to 5, the rear part 5 of the leg 3 has a longitudinal body 50 adapted to come into contact with the temples of a user, and a locking member 51 having, in this example, under the form of a vertical cylinder connected to the longitudinal body 50 by a pin 52. It is obvious that the cylinder section may be annular, oval or the like. An oval section advantageously allows the definition of open / closed positions which are blunt.

In this example, with reference to Figures 3 to 5, the front part 4 of the arm 3 is in the form of a flexible clamping member having a portion 4A of connection comprising two jaws 41, 42 adapted to clamp the glass glasses 2 and a connecting portion 4B having a cavity 43, extending vertically, configured to permit opening of said jaws 41, 42 due to pressure of said cavity 43. in other words, in the manner of a clothes peg , if the operator by pressure deforms the cavity 43, the jaws 41, 42 move apart due to the flexibility of the clamping element. When the pressure, the section of the cavity 43 decreases. On the contrary, in the absence of pressure, the jaws 41, 42 are closed and pinch between them the edge of the glass 2. Thereafter, the first jaw 41 is designated as "rear jaw 41" while the second jaw 42 is designated "front jaw 42". In this example, the front part 4 of the arm 3 extends longitudinally. Preferably, with reference to Figures 3 to 5, the front jaw 42 comprises two teeth 44 adapted to be introduced into the two holes 21 of the glass arm 2. Thus, the portion of the forward position 4 of the arm 3 is perfectly defined with respect to the lens 2. in addition, the use of teeth 44 allows to firmly clamp the lens 2, preventing any relative displacement. Finally, the use of at least two teeth 44 prevents relative rotation between the front part 4 and the lens 2, which improves the lifetime of the pair of eyeglasses and their aesthetics. More preferably, each tooth 44 is tapered so as to allow optimum centering upon insertion into a branch orifice 21 and a progressive tightening. The presence of teeth 44 of the front jaw 42 improves the aesthetics since the latter are hidden during use of the spectacles. However, alternatively or cumulatively, the rear jaw 41 may include teeth 44. Preferably, the jaws 41, 42 are convex or concave in order to adapt to the shape of the lens 2 to be clamped.

As illustrated in Figure 4, the locking element 51 of the arm 3 is configured to be mounted in the cavity 43 of the front portion 4 of the arm 3 so as to prevent any deformation of the cavity 43 by pressure. In other words, the locking member 51 keeps the jaws 41, 42 closed to clamp the lens 2. As shown in Figure 5, the branch 3 has a slot 430 permitting access to the cavity 43.

In this example, so quite advantageously, the locking element 51 cooperates with the cavity 43 so as to form a hinge axis Z3. Thus, the locking element 51 allows, on the one hand, to maintain the jaws 41, 42 tightly and, secondly, to articulate the rear part 5 of the arm 3 with its front part 4. As shown in Figure 3, the locking element 51 has a cylindrical section whose diameter is substantially equal to that of the cavity 43 in the absence of pressure.

The installation of branch 3 is particularly simple to implement since only the optician to press the 4B connecting part for the connection part 4A opens to allow insertion of the glass edge 2. Then, when the pressure is stopped, because of its flexibility, the front portion 4 is closed, the teeth 44 of the jaw 42 before penetrating into the leg openings 21 to clamp the edge of the lens 2. with teeth 44 , the position of the front portion 4 is completely defined with respect to the lens 2.

Upon introduction of the locking element 51 into the cavity 43 of the front portion 4 of the arm 3 via the mounting slot 430, the jaws 41, 42 are forced into the closed position due to the flexibility of the front part 4, which is secure clamping of the lens 2. at the same time, the rear portion 5 is articulated to the front part 4 of the arm 3, which allows the arm 3 to extend perpendicularly or parallel to the glass 2. in a preferred aspect, the arm 3 may comprise security means mounting the rear portion 5 in the front part 4 in order to avoid accidental disconnection, for example, a cap or pin.

It has been introduced a lens 2 having two orifices branch 21 but it goes without saying that the invention also applies to a glass having a single branch port 21 or more than two holes 21 branch. Similarly, each hole 21 is not necessarily through and could only be blind.

Advantageously, the rear portion 5 of the arm 3 can be removed from the front portion 4 in order to allow release of the glass in a simple manner. The frame can thus be easily replaced. One or more glasses can also be easily replaced. In a preferred embodiment, one or more parts of the branch can be replaced to change the aesthetic appearance of the frame.

Referring to Figures 6 and 7, each lens 2 extends substantially in a plane (X, Z) called "front face" and has at one end two bridge through orifices 22 made, in this example, by drilling. The bridge of orifices 22 are vertically aligned along the Z axis and formed at the opposite end of the glass 2 relative to the orifices of branch 21. Obviously they could be aligned along any axis belonging to the front plan. As illustrated in FIGS 6 and 7, the central bridge 6 includes a main member 7 and an auxiliary member 8 which cooperates with the main member 7. The main member 7 of the central bridge 6 extends longitudinally along the axis X and comprises a central connecting portion 7B, and, at each of its ends, a connecting portion 7A.

Each connection portion 7A forms a clamping member which comprises two jaws 71, 72 adapted to clamp a spectacle lens 2. In this example, the connecting portion 7B comprises two cavities 73, extending vertically, configured to allow the opening said jaws 71, 72 due to pressure. In other words, each jaw pair 71, 72 is associated with a cavity 73. Thus, in the manner of a clothes peg, if the operator deforms by a pressure cavity 73, the associated jaws 71, 72 move away from the Because of the flexibility of the clamping element. When the pressure, the section of the cavity 73 decreases. On the contrary, in the absence of pressure, the jaws 71, 72 are closed and clamp between them the edge of the glass 2. Thereafter, each first jaw 71 is designated "rear jaw 71 ', while each second jaw 72 is designated "jaw before 72". Preferably, the jaws 71, 72 are convex or concave in order to adapt to the shape of the lens 2 to be clamped. Preferably, similarly to the legs 3, with reference to Figures 6 and 7, each front jaw 72 comprises two teeth 74 adapted to be introduced into the two bridge ports 22 of the lens 2. Thus, the position of the center bridge 6 with respect to glass 2 is perfectly defined. As indicated above, the use of teeth 74 permits firmly clamping the lens 2, preventing any relative displacement. For clarity, the characteristics and advantages similar to the connection of the branch 3 will not be presented. In this example, the main body 7 is in one piece.

Referring to Figures 6 and 7, the auxiliary member 8 of the central bridge 6 includes a body 80 extending longitudinally along the axis X which comprises a cavity 82 adapted to be in contact with the wearer's nose. Advantageously, the optician can have a collection of ancillary units 8 82 whose fingerprints are different to fit different body types. As illustrated in FIGS 6 and 7, the auxiliary member 8 comprises two locking elements 81 extending vertically along the Z axis so as to cooperate with the cavities 73 of the main body 7. In this example, the auxiliary member 8 is in one piece.

Similarly to a locking element 51 of the arm 3, each locking element 81 of the auxiliary member 8 is configured to be mounted in a cavity 73 so as to prevent any deformation of the cavity 73 by pressure. In other words, the locking member 81 keeps the jaws 71, 72 closed to clamp the lens 2.

Thus, the middle deck 6 comprises two clamping elements that can be locked easily and simultaneously by inserting the auxiliary member 8 into the main body 7.

Fitting the central bridge 6 is particularly simple to implement since it suffices for the optician to press the connection portion 7B of the main body 7 so that a connecting portions 7A opens to allow insertion of the glass panel 2. Thereafter, when the pressure is stopped, because of its flexibility, the jaws 71, 72 close, the teeth 74 of the jaw 72 before penetrating the bridge of orifices 22 for clamping the edge of the lens 2. These steps are repeated for connecting each glass 2. to lock the main body 7 of the central bridge 6, the auxiliary member 8 is inserted from the bottom upward in the main body 7 so as to that each locking member 81 engages in a recess 73 of the main body 7, the jaws 71, 72 are forced into the closed position due to the flexibility of the connecting portions 7a, which has the secure clamping of the two glasses 2 so simult anée.

It was introduced a glass bridge 2 having two openings 22 but it goes without saying that the invention also applies to a glass 2 with a single bridge port 22 or more than two bridge ports 22. Similarly, each bridge port 22 is not necessarily through and could only be blind. Thanks to the invention, the entire spectacle frame can be mounted quickly and easily while being dismantled in a simple manner. In practice, the frame may be associated with two glasses in about ten seconds, providing significant time savings.

Alternatively, the central bridge 6 includes a main body 7 and two auxiliary bodies each in the form of a nose pad incorporating a locking element of a cavity 73 of the main body 7. Thus, it locks the jaws 71, 72 of the main body 7 when the establishment of nose pads. Moreover, the optician can select the most suitable nose pad to the morphology of the user, which is advantageous.

Referring to Figure 8, there is shown another embodiment of a branch 3 'which has a front portion 4' connected to the lens 2 and a rear part 5 'intended to be in contact with the temple of the user which is hinged. The rear portion 5 'comprises a first element 50' and a second element 45 '. The second element 45 'is articulated with the front part 4' but is adjustably connected with the first member 50 'of the rear portion 5'. In this example, with reference to Figures 8 and 9 similarly to the first embodiment, the front portion 4 'of the branch 3' is in the form of a flexible clamping member having a portion of connection 4A 'comprising two jaws 41', 42 'adapted to clamp the eyeglass lens 2 and a connecting portion 4B' having a cavity 43 'extending vertically configured to permit opening of said jaws 41', 42 'following a pressure. In this example, the cavity 43 'is open laterally through a slot 430'. As indicated above, if the operator by pressure deforms the cavity 43 ', the jaws 41', 42 'deviate due to the flexibility of the clamping element in the manner of a clothes peg. As illustrated in FIG 9, one of the jaws 41 ', 42' includes teeth 44 'for clamping the lens 2 as illustrated in Figure 8. In this example, the front portion 4' of the arm 3 is bent at 90 °.

As illustrated in FIGS 8 and 9, the first member 50 'of the rear part 5' of the branch 3 'has a longitudinal body adapted to come into contact with the temples of a user, and a plurality of mounting apertures 52 'whose axis extends preferably vertically. The mounting openings 52 'are aligned longitudinally in the body of the first member 50' of the rear part 5 'of the branch 3' to permit adjustment of the length of the branch 3 'as will be discussed subsequently.

The second element 45 'of the rear part 5' of the leg 3 'is in the form of a loop whose periphery is opened so as to set both ends facing each other as shown in FIG 10. the second member 45 'is substantially rectangular in shape so as to define a length and a width, the periphery of the loop being open at its width. Also, the second member 45 'includes a full width 451' and an open width 452 'as shown in Figure 1 0. The full width 451' of the second element 45 'can be inserted, preferably in force in the cavity 43 'of the front portion 4' through the slot 430 'to enable the second member 45' of articulation with the front part 4 'according to a hinge axis 13'. Analogously to the first embodiment, the assembly locks the jaws 41 ', 42' onto the glass 2. In other words, the full width 451 'forms a locking element.

Similarly, the open width 452 'of the second element 45' can be introduced into one of the apertures 52 'of the first member 50' of the rear portion 5 'by varying the flexibility of the ends of the second member 45'. The second element 45 'is then connected with the first member 50'. Depending on the selected aperture 52 ', the length of the leg 3' is modified.

Similar to the first embodiment, the branch 3 'can be mounted / dismounted conveniently and quickly without using tools.

Thanks to this embodiment can advantageously adjust the length of the branch 3 'conveniently and enable an optimal folding of the leg 3'.