CN117529686A - Glasses comprising longitudinally offset hinges - Google Patents

Abstract

The invention relates to a pair of spectacles (1) extending from the back to the front along a first longitudinal axis (X), comprising: front (10), first tenon (11), second tenon (12) are connected to first mirror leg (21) and second mirror leg (22) of first tenon (11) and second tenon (12) respectively through first hinge (31) and second hinge (32), and first tenon (11) is shorter than second tenon (12) for the longitudinal position of two hinges (31, 32) is different, so that reduces front (10) and warp risk because of longitudinal compressive force.

Description

Glasses comprising longitudinally offset hinges

Technical Field

The present invention relates to the field of eyeglasses.

As is known, with reference to fig. 1, the eyeglass 100 comprises a lens VA. The lens VA may be of different types, in particular a vision lens, a virtual reality lens, a temporary lens, a presentation lens, etc. In this example, the glasses are presented in reference coordinates (X, Y, Z), where the X-axis extends longitudinally from front to back, the Y-axis extends laterally from left to right, and the Z-axis extends vertically from bottom to top.

The eyeglass 100 comprises a front face 110 extending integrally in a plane (Y, Z), and a first tenon 111 and a second tenon 112 connected to the front face 110, the front face 110 comprising two lenses VA.

The eyeglass 100 further comprises a right temple 121 and a left temple 122, the right temple 121 and the left temple 122 being connected to the right tenon 111 and the left tenon 112 by a right hinge 131 and a left hinge 132, respectively. Thus, each side temple 121, 122 is movable between a folded storage condition in which the side temple 121, 122 is generally parallel to the front face 110 (see fig. 1) and an unfolded use condition in which the side temple 121, 122 is generally perpendicular to the front face 110. When the eyeglass 100 is folded, the temples 121, 122 are positioned in tandem relative to the X-axis. As is known, the eyeglass 100 is symmetrical such that the comfort on both sides of the wearer's face is the same when the wearer wears the eyeglass PA.

To protect the glasses PA, it is known to store the glasses in a box ET, as schematically shown in fig. 2. The box ET may be compressed in a jacket or bag when stored. During compression, a longitudinal compressive force F is applied to the temples 121, 122 in the folded state. More precisely, given that the temples 121, 122 are overlapping, a longitudinal compression force is applied by the pressure point pres on the side temple located at the rear (here the left temple 122), which is transmitted to the side temple located at the front (here the right temple 121). The longitudinal compressive force F is then transferred to the tenons 111, 112, deforming the front face 110. The front face 110 then warps and no longer retains its original shape. This distortion alters the position of the lens relative to the wearer's line of sight, thereby reducing the visual correction provided thereby, which is the source of discomfort to the wearer's eyes. The deformation also affects the aesthetic sense to some extent. In addition, the axes of hinges 131, 132 may also deform, thereby impeding the closing of temples 121, 122. This contact between the temples, also known as "torsion", has a number of disadvantages. In addition, since the material of the lens frame (especially, the acetate lens frame) is heat-sensitive, there is a greater possibility that undesired deformation occurs at high temperatures.

The deformation may occur when the glasses PA are stored in any type of case ET (soft case or hard case). Deformation may also occur when closing the lid of the box ET, as this may cause compression of the glasses PA. Compression may also be caused when the glasses PA are not stored in the case ET but slid into clothing, for example. A straightforward solution to this drawback is to make the glasses PA very stiff to avoid deformation, but this increases its bulk and affects the comfort of the wearer. Thus, this solution cannot be preserved.

Incidentally, in the prior art, various solutions for folding the temple so as to reduce its volume are known, but these solutions cannot prevent deformation of the front face. In particular, patent application US8192017B2 discloses a pair of spectacles in which the side temples are hinged in a vertical movement with the front face, so as to achieve a top-to-bottom arrangement of the temples in the storage condition. Overlapping of the temples is avoided, but the longitudinal compressive forces are still transferred from each side temple alone to the front face, deforming it.

Thus, there is a need for a new pair of spectacles that does not deform on the front face, particularly when the spectacles are compressed longitudinally. It is a further object of the invention to not increase the cost of manufacturing eyeglasses.

Patent application US2013/0044287A proposes a pair of glasses that can be used as bookmarks, as is known in the prior art. The temples of the glasses are straight and narrow so that the book can be closed without twisting the temples of the glasses. Furthermore, the lens must be narrow so that it does not extend beyond the binding site of the book.

Patent application US5875016 proposes a pair of spectacles which reduces the fogging phenomena and the discomfort caused by the wind during skiing, as is known in the prior art. To improve the windbreak performance, the front face is curved and asymmetric to provide enhanced protection to one side of the front face.

Disclosure of Invention

To this end, the invention relates to a pair of spectacles extending from the rear to the front along a first longitudinal axis, comprising:

-a front face comprising two lenses

-a first tenon and a second tenon connected to the front face;

-a first and a second temple connected to the first and second tenons by a first and a second hinge.

The invention is notable in that the longitudinal positions of the first and second hinges are different in order to reduce the risk of deformation of the front face due to longitudinal compressive forces.

Advantageously, therefore, the two temples are folded in different planes, spaced from each other, so as to reduce or avoid the transmission of longitudinal compression forces between the two temples. Thus, the front face is not subjected to load at a plurality of points, and is not deformed even if it is low in rigidity. The second temple acts as a mechanical damper absorbing all compressive forces. The torsional forces present in the prior art are significantly reduced.

Advantageously, the useful life of the spectacles is increased and the front face can be thinned to reduce its rigidity. The thinned front surface allows for the manufacture of less stressed eyewear, particularly in the original shape of the temple. In the folded state, the glasses are fixed in a case. Advantageously, the invention can be adapted to both thicker and thinner fronts as deformation can be avoided.

The arrangement of the lenses is durable, thereby improving the comfort of the wearer. From an industrial point of view, it is only necessary to change the length of the tenon, which does not incur any additional costs.

By proposing spectacles with an asymmetric structure, the applicant has overcome the prejudice prevalent in the optical world, namely the requirement for spectacles with a symmetric structure, to ensure the comfort and aesthetic appeal of the wearer when wearing said spectacles. Thanks to the invention, the spectacles maintain an aesthetic sense in the unfolded state, while being resistant to deformation in the folded state. Compared with the prior art, the performance of the glasses is improved.

Preferably, the first tenon is shorter than the second tenon so that the longitudinal positions of the two hinges are different, to reduce the risk of deformation of the front face.

According to one aspect, the first temple is longer than the second temple. According to a preferred aspect, the assembly of the first tenon and the first temple is the same length as the assembly of the second tenon and the second temple. Thus, when the glasses are worn, they are symmetrical in aesthetic appearance despite their asymmetrical structure.

According to another aspect, the first temple is the same length as the second temple. Preferably, the first and second temples are directly connected to the front surface. Advantageously, the tenon is offset relative to the temple, and in the unfolded state the hinge is not aligned with the temple. The temples are identical except that the tenons are different.

Preferably, the first temple has a determined thickness, the distance between the longitudinal positions of the two hinges being greater than said determined thickness, so as to avoid contact of the first temple with the second temple. Advantageously, said distance is determined according to the thickness of said first temple, so as to avoid any contact. Thus, the distance may be matched to each pair of eyeglasses separately.

Preferably, said distance between the longitudinal positions of the two hinges is between 0.5 and 10mm, preferably between 1 and 7mm, still preferably between 2 and 5 mm. This distance makes it possible to make the pair of spectacles robust to deformations while reducing its longitudinal volume.

According to a preferred aspect, the first temple is a right temple. Thus, a right-handed person can intuitively fold the glasses.

Preferably, the first hinge and/or the second hinge is in the form of a mechanical hinge comprising a hinge axis connected on the one hand to the front face and on the other hand to the first and/or the second temple.

The invention also relates to a method of folding the temple of eyeglasses as described above, the temple being in an unfolded state, the method comprising the steps of:

-folding the first temple to the front; then

-folding the second temple, the second temple being remote from the first temple in the folded state.

Alternatively, the invention relates to a pair of spectacles extending from back to front along a first longitudinal axis, comprising:

-a front face comprising two lenses;

-a first tenon and a second tenon connected to the front face;

-a first and a second temple connected to the first and second tenon by a first and a second hinge, respectively.

The invention is remarkable in that the first tenon is shorter than the second tenon, so that the longitudinal positions of the two hinges are different, thereby reducing the risk of deformation of the front face due to longitudinal compression forces.

Drawings

The invention will be better understood by reading the following description, given as an example, with reference to the following drawings, given as a non-limiting example, in which like reference numerals designate like objects:

fig. 1 is a schematic view of prior art spectacles.

Fig. 2 is a schematic view of the eyeglass of fig. 1 in a stored condition in a cartridge undergoing longitudinal compression.

Fig. 3 is a schematic view of eyeglasses in a folded state in accordance with an embodiment of the present invention.

Fig. 4 is a schematic view of the glasses of fig. 3 when folded.

Fig. 5 is a schematic top view of the eyeglass of fig. 3.

Fig. 6 is a schematic view of the eyeglass of fig. 3 in a stored condition in a cartridge undergoing longitudinal compression.

Fig. 7 is a schematic view of "rimless clip-on" glasses in a folded-in condition.

Fig. 8 is a schematic view of "rimless clip-on" eyeglasses in an extended state.

Fig. 9 is an isometric view of a "rimless clip-on" eyeglass in a folded condition.

Fig. 10 is an isometric view of a "rimless clip-on" eyeglass in an extended state.

Fig. 11 is a schematic view of another embodiment of eyeglasses in a folded state.

Fig. 12 is a schematic view of another embodiment of eyeglasses in an extended state.

It should be noted that the drawings illustrate the invention in a detailed manner to practice the invention, which may, of course, be used to better define the invention as applicable.

Detailed Description

Referring to fig. 3, a pair of eyeglasses P is shown in accordance with one embodiment of the present invention.

In this example, the glasses are presented in reference coordinates (X, Y, Z), where the X-axis extends longitudinally from front to back, the Y-axis extends laterally from left to right, and the Z-axis extends vertically from bottom to top.

As shown in fig. 3, the eyeglass 1 comprises a front face 10, the front face 10 comprising two lenses V. The front face 10 may have different properties such as an opening 13 (fig. 3) around the lens V, a frameless clip (fig. 7-10), or others. Thus, the front face 10 may be one-piece or modular. Similarly, the front face 10 may be made of various materials (plastic, metal, etc.), in particular acetate.

The front surface is symmetrical, namely, the traditional symmetrical structure. The positive symmetry feature is defined without the inclusion of a tenon. Preferably, the front face is substantially flat, i.e. its thickness along the X-axis is less than 30mm, preferably less than 20mm.

The spectacles 1 further comprise a first tenon 11 and a second tenon 12 connected to the front face 10. In this example, the first tenon 11 is a right tenon and the second tenon 12 is a left tenon. The front face 10 has a full view angle with respect to the plane (Y, Z) so that the lens V is optimally positioned. The lens V may have different properties, in particular a vision lens, a virtual reality lens, a sun lens, a temporary lens, a presentation lens, etc.

Still referring to fig. 3, the eyeglass 1 further comprises a first temple 21 (here a right temple) and a second temple 22 (here a left temple), the first temple 21 and the second temple 22 being connected to the first tenon 11 and the second tenon 12 by a first hinge 31 and a second hinge 32, respectively. As shown in fig. 4, each temple 21, 22 is movable due to the hinges 31, 32 between an unfolded state D, in which the temple 21, 22 extends along the longitudinal X-axis, and a folded state P, in which the temple 21, 22 extends transversely along the Y-axis.

The first and second temples 21 and 22 each have a curved portion to match the contours of the wearer's ears in order to provide comfort similar to conventional eyeglasses. In particular, the curved portion is configured to pass near the temporal bone to the exterior/upper portion of the ear.

The tenon is used to refer to the element of the hinge that connects the front face 10 to the temple to effect closing of the temple, and may be part of the front face 10 (i.e., subsequently attached to the front face 10) or part of the material of the front face 10 (i.e., formed simultaneously with the front face 10). The rabbet may be stand alone or integrated into a hinge (pivot, mechanical, t-hinge or other hinge).

According to the present invention, the longitudinal positions of the first hinge 31 and the second hinge 32 are different to reduce the risk of deformation of the front face 10 due to longitudinal compressive forces. Preferably, the first tenon 11 is shorter than the second tenon 12, so that the longitudinal positions of the first hinge 31 and the second hinge 32 are different, in order to reduce the risk of deformation of the front face 10, in particular of panorama angular deformation.

The difference in length of the first tenon 11 and the second tenon 12 along the longitudinal X-axis is advantageous in that it allows one of the temples 21, 22 to lie in a different plane than the other of the temples 21, 22 in the folded state. In other words, in the folded state, as shown in fig. 4, the first temple 21 is rarely or not in contact with the second temple 22. Advantageously, the panoramic angle of the front face 10 is preserved.

Preferably, the hinges 31, 32 are in the form of pivot hinges having the same range of rotation angles. Preferably, each hinge includes a closure stop to reduce the closing angle and reduce contact between the temples, thereby reducing force transmission.

In this example, the hinges 31, 32 allow hinging in the same horizontal plane, but it goes without saying that the hinges 31, 32 may also be longitudinally offset, i.e. hinged in two horizontal planes longitudinally offset, respectively.

According to one aspect of the invention, the hinges 31, 32 are not adjustable, i.e. fixed.

According to one aspect of the invention, the first hinge 31 and/or the second hinge 32 are in the form of mechanical hinges comprising a hinge axis connected on the one hand to the front face 10 and on the other hand to the first and/or second temples 21, 22. The mechanical hinges can thus be mounted in particular on the front face 10 in a staggered manner. According to another aspect of the invention, the first hinge 31 and/or the second hinge 32 is constituted by a simple rod/screw forming the hinge axis.

In this example, the hinge is referred to as a temple hinge, i.e., is configured to effect folding of the temple 21/22 relative to the front face 10.

In this embodiment, the first temple 21 must be folded before the second temple 22 to avoid any contact, considering that the first tenon 11 is shorter. As shown in fig. 4, the second temple 22 is thus located in a rear position away from the first temple 21. Advantageously, as will be described later, the second temple 22 performs a damping function by avoiding the complete transmission of any longitudinal compression force F to the first temple 21. Thereby, any longitudinal compressive force F is no longer transmitted to various points of the front face 10, thereby avoiding deformation.

The tenons 11, 12 and temples 21, 22 of the spectacles 1 will now be described in detail.

According to one aspect of the invention, the first temple 21 is longer than the second temple 22 to counteract the fact that the first tenon 11 is shorter than the second tenon 12. In this example, the assembly of the first tenon 11 and the first temple 21 is the same length as the assembly of the second tenon 12 and the second temple 22. The spectacles 1 are therefore symmetrical when worn, which ensures a similar function as the prior art and optimal comfort for the wearer.

In this example, the tenons 11, 12 are aligned with the temples 21, 22, respectively, in the unfolded state. In other words, in the unfolded state, the temples 21, 22 are in direct contact with the tenons 11, 12, respectively, and not with the front face 10.

Preferably, each temple 21, 22 is free of internal hinges. The temples are advantageously manufactured in a conventional manner, only with the need to adjust their length. Even more preferably, the spectacles 1 comprise only two hinges 31, 32, each connected to a respective temple 21, 22.

According to a preferred aspect, the first temple 21 has a determined thickness Δ1, in particular measured at a central point as shown in fig. 5. The distance Δ2 between the longitudinal positions of the first hinge 31 and the second hinge 32 is greater than the determined thickness Δ1 to avoid contact between the first temple 21 and the second temple 22. Therefore, when the glasses P are folded, all force transmission between the second-side legs 22 and the first-side legs 21 is restricted.

Preferably, the distance Δ2 between the longitudinal positions of the first hinge 31 and the second hinge 32 is between 0.5-10mm, preferably between 1-7mm, still preferably between 2-5 mm. This distance range makes it possible to reduce the deformation of the front face 10 on the one hand and the axial volume of the spectacles P on the other hand. Thus, this tradeoff is optimal.

In the closed state, the first temple 21 lies in a first plane (parallel to XZ) and the second temple 22 lies in a second plane parallel to but different from the first plane. The two planes are separated by a gap corresponding to the difference in length between the tenons 11, 12.

The spectacles 1 have been presented in which the first tenon 11 (shortest tenon) is a straight tenon. This arrangement is advantageous for right-handed people. It goes without saying that the opposite is also possible.

An example of a method of implementing the folding temples 21, 22 will now be presented with reference to fig. 4. In the initial state, the temples 21, 22 are in the unfolded state D, the method comprising the step of folding the first temples 21 to the front face 10, and the step of folding the second temples 22. When both temples 21, 22 are in the folded state P, the second temples 22 are away from the first temples 21, which makes it possible to reduce the transmission of force and thus the deformation of the front face 10.

For example, referring to fig. 6, when the eyeglasses P are stored in the case ET, since the temples 21, 22 are not in contact with each other, the longitudinal compressive force F is applied to the second temple 22 through the pressure point PRESS without being transmitted to the front side temple (here, the right temple 21). The rear-located temples 22 absorb the longitudinal compressive force F, which is not transmitted to the points of the front face 10, in the manner of dampers and prevent the front face 10 from being deformed.

Thanks to the invention, the service life of the spectacles P is prolonged by reducing the risk of deformation of the front face 10. The service life of the unmodified shaft of the hinge 31, 32 is also extended. The position of the lens V remains optimal, which provides the wearer with a long lasting optical corrective effect. Finally, from an industrial point of view, the cost of the spectacles 1 is the same as that of conventional spectacles comprising hinges 31, 32 with the same longitudinal position.

Furthermore, the present invention is suitable for any type of hinge, such as a conventional pivot hinge, a T-hinge or a hinge that can be opened excessively.

Referring to fig. 7 to 10, the invention is also applicable to "rimless snap" spectacles, wherein the front face 10 comprises only the tenons 11, 12 connected to the lenses V and an intermediate bridge connected to the lenses V. In other words, for such front faces, the lens V is not mounted in a circular frame. The invention is thus applicable to any type of front face 10.

Referring to fig. 11 and 12, the invention is also applicable to eyeglasses 1 in which the hinges 31, 32 are offset relative to the temples 21, 22, respectively, in the unfolded state. In the unfolded state, the hinges 31, 32 do not extend in the extension of the temples 21, 22, respectively, but are offset between the temples 21, 22 so as to form a staggered hinge, so that in the unfolded state both temples 21, 22 are in direct contact with the front face 10. By biasing the hinges 31, 32 towards the centre of the spectacles 1, i.e. towards a plane PH (fig. 12) perpendicular to the front face 10, which substantially symmetrically divides the front face 10, the temples 21, 22 are advantageously made to have the same length. The glasses legs 21 and 22 are the same, which is beneficial to industrial production.

Claims (11)

1. A pair of spectacles (1) extending from rear to front along a first longitudinal X-axis, comprising:

-a symmetrical front face (10) comprising two lenses (V);

-a first tenon (11) and a second tenon (12) connected to the front face (10);

-a first temple (21) and a second temple (22) connected to said first tenon (11) and to said second tenon (12) respectively by a first hinge (31) and a second hinge (32), said first temple (21) comprising a curved portion, said second temple (22) comprising a curved portion,

-characterized in that the distance (Δ2) between the longitudinal positions of the first hinge (31) and the second hinge (32) is between 0.5-10mm to reduce the risk of deformation of the front face (10) due to longitudinal compression forces.

2. The spectacles (1) according to claim 1, wherein the first tenon (11) is shorter than the second tenon (12) so that the longitudinal positions of the two hinges are different.

3. The spectacles (1) according to claim 1 or 2, wherein the first temple (21) has a determined thickness (Δ1), the distance (Δ2) between the longitudinal positions of the first hinge (31) and the second hinge (32) being greater than the determined thickness (Δ1) in order to avoid contact of the first temple (21) with the second temple (22).

4. A spectacle (1) as claimed in any one of claims 1 to 3, wherein the distance (Δ2) between the longitudinal positions of the first hinge (31) and the second hinge (32) is comprised between 1-7mm, preferably between 2-5 mm.

5. The spectacles (1) according to any of claims 1 to 4, wherein the first temples (21) are longer than the second temples (22).

6. The spectacles (1) according to claim 5, wherein the assembly of the first tenon (11) and the first temple (21) is of the same length as the assembly of the second tenon (12) and the second temple (22).

7. The spectacles (1) according to any of claims 1 to 6, wherein the first temples (21) are of the same length as the second temples (22).

8. The spectacles (1) according to claim 7, wherein the first and second temples (21, 22) are directly connected to the front face (10).

9. The spectacles (1) according to any of claims 1 to 8, wherein the first temple (21) is a right temple.

10. The spectacles (1) according to any of claims 1 to 9, wherein the first hinge (31) and/or the second hinge (32) are in the form of a mechanical hinge comprising a hinge axis connected on the one hand to the front face (10) and on the other hand to the first temple (21) and/or the second temple (22).

11. A method of folding the temples (21, 22) of the spectacles (1) of any one of claims 1 to 10, the temples (21, 22) being in an unfolded state, characterized in that the method comprises the steps of:

-folding the first temple (21) to the front face (10); then

-folding the second temple (22), the second temple (22) being distant from the first temple (21) in the folded state.