Glasses with elastic hinge

Abstract

The invention relates to a pair of eyeglasses (10) with an elastic hinge, comprising two temples (14) and a frame front (12) capable of supporting lenses (16), each temple extending in a longitudinal direction between a distal end away from the frame front and a proximal end connected to the frame front; the proximal end of the frame front comprises a flexible portion (40) having an inner surface (46) arranged to be oriented towards the head of a user when the eyewear is worn. The eyewear further comprises, for each temple, a resilient insert (62) removably attached adjacent to the inner surface of the flexible portion, where the resilient insert determines the tightness of the temple on the head of the user when the eyewear is worn.

Description

Technical Field

[0001] The present disclosure relates to eyeglasses having elastic hinges. Background Art

[0002] Eyeglasses having a frame front part intended to support the lenses and two temples connected to the frame front part by elastic hinges have been proposed. Such elastic hinges avoid the use of pivot hinges. They are usually configured to push the temples towards each other, thereby clamping the user's head when the glasses are worn. As a result, the glasses can be firmly engaged on the user's head.

[0003] However, when the size or grip of the glasses is not properly fitted to the user, the pressure caused by the elastic hinges may create uncomfortable pressure points on the user's head.

[0004] Additionally, aging of the glasses may produce a loss of elasticity in the elastic hinges, so that the proper fit of the glasses on the user's head may deteriorate over time.

[0005] The object of the present disclosure is in particular to remedy all or part of the above-mentioned disadvantages. Summary of the invention

[0006] For this purpose, glasses with elastic hinges are proposed, comprising two temples and a frame front part that can support lenses, wherein each temple extends in a longitudinal direction between a distal end remote from the frame front part and a proximal end connected to the frame front part, and wherein the proximal end of the frame front part comprises a flexible portion, the flexible portion having an inner surface that is arranged to be oriented towards the head of the user when the glasses are worn,

[0007] The eyeglasses further comprise, for each temple, an elastic insert removably attached adjacent an inner surface of the flexible portion, wherein the elastic insert determines the tightness of the temple on the user's head when the eyeglasses are worn.

[0008] In this way, the insert can determine the flexibility of the flexible portion. When several inserts with different elastic properties are available, the glasses can be adapted to different uses, to users with different head widths or with different preferences, while being both comfortable and providing a good hold. Furthermore, when the elastic insert ages and loses some of its elasticity, it can be replaced, thereby extending the life of the glasses.

[0009] The features disclosed in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0010] - said elastic insert is attached in said flexible portion of the temple by push-fit;

[0011] - the elastic insert comprises a first tenon, a second tenon, and a longitudinal body extending between the first tenon and the second tenon, wherein the first and second tenons are push-fitted on both sides of the flexible portion so as to exert a traction force on the longitudinal body when the temples are separated from each other;

[0012] - the first and second tenons are push-fit into cavities formed in the flexible portion;

[0013] - the cavity is open towards the inner surface of the flexible portion;

[0014] - each tongue comprises at least one shoulder extending towards the longitudinal body, said at least one shoulder engaging in a groove extending the respective cavity under the flange of the respective temple;

[0015] - a portion of each cavity is kept free by the tenon so as to allow sufficient displacement of the tenon in the cavity for releasing the shoulder from the corresponding groove;

[0016] - adjacent each cavity, the longitudinal body is received in a slit, wherein the slit is open towards the inner surface of the flexible portion, and wherein the slit extends in the longitudinal direction;

[0017] - the flexible portion comprises an outer wall and a series of protrusions protruding from the outer wall towards the inner surface, wherein the protrusions are aligned along the longitudinal direction and respectively form teeth extending parallel to the inner surface to define a channel, and wherein the insert can be press-fitted into the channel;

[0018] - all teeth extend in the same direction and the channels open parallel to the inner surface;

[0019] - the frame front comprises a curved portion extending between the temples, and the temples extend in continuation of the curved portion of the frame front, wherein the glasses have a rounded shape suitable for tightening on the user's head;

[0020] - The frame front and temples are polyamide thermoplastic and the inserts are elastomer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, details and advantages will become apparent upon reading the following detailed description and analyzing the accompanying drawings, in which:

[0022] Figure 1

[0023] Figure 1 A perspective view schematically showing an example of spectacles.

[0024] Figure 2

[0025] Figure 2 Schematically show Figure 1 An exploded perspective view of an example of glasses.

[0026] Figure 3

[0027] Figure 3 Schematically show Figure 1 A top view of an example of glasses.

[0028] Figure 4

[0029] Figure 4 Schematically showing that Figure 1 A perspective view of a detail of the temples used in an example of eyeglasses.

[0030] Figure 5

[0031] Figure 5 Schematic representation of the scene from different viewing angles Figure 4 Detail view of.

[0032] Figure 6

[0033] Figure 6 Schematically show Figure 4 details.

[0034] Figure 7

[0035] Figure 7 Schematically showing that Figure 1 A perspective view of an elastic insert used in eyeglasses.

[0036] Figure 8

[0037] Figure 8 Schematically showing the Figure 5 Elastic inserts Figure 4 Detail perspective view.

[0038] Fig. 9

[0039] Fig. 9 Schematically showing the Figure 5 The elastic insert from different perspectives Figure 4 Detail view of.

[0040] Fig.10

[0041] Fig.10 Schematically showing the Figure 5 Elastic inserts Figure 4 Detailed cross-sectional view of the. DETAILED DESCRIPTION

[0042] Figure 1 An example of glasses 10 is schematically shown. As shown, glasses 10 basically include a frame front 12 and two temples 14. The frame front 12 is intended to allow the attachment of lenses 16. The lenses 16 can specifically be vision correction lenses, lenses for sun protection or transparent lenses. The temples 14 extend on both sides of the frame front 12 so that the user can wear the glasses 10.

[0043] The frame front 12 and the temples 14 can be formed as a single unit, making the manufacture of the glasses 10 easier. For example, the frame front 12 and the temples 14 described above are made of a hard material such as a polyamide thermoplastic material. The material can be, for example, a polyamide thermoplastic material from EMS-Grivory. Branded products.

[0044] Here, the frame front portion 12 may include a curved portion 18 connecting two temples 14, and a nose pad 20 extending perpendicularly to the curved portion 18 substantially at the center of the curved portion 18. When the glasses 10 are worn, the curved portion 18 extends along the forehead of the user. The nose pad 20 may include two pad arms 22 so as to have a substantially "Y" shape for engagement on the nose of the user.

[0045] As in Figure 2 As can be better seen in the particular example shown, the curved portion 18 can include a receiving area 23 for the lens 16. Two protrusions 24 can protrude from the receiving area 23 for engaging respectively in two openings 26 formed in the lens 16. In addition, the nose pad 20 can include a hook 28 open upwards, in which the lower edge of the lens 16 can be inserted. Thereafter, the lens 16 can be attached to the frame front part 12 by push-fitting the edge of the lens 16 into the hook 28 of the nose pad 20 and by inserting the opening 26 of the lens 16 into the protrusion 24 of the frame front part 12. Thus, in the example considered, the lens 16 is removable and can be easily replaced.

[0046] Each temple 14 extends in the longitudinal direction from the frame front 12. Each temple 14 has a proximal end connected to the frame front 12, and a distal end that is positioned near the ear of the user when the glasses 10 are worn.

[0047] Here, the temples 14 extend generally curvedly toward the interior of the eyeglasses 10, which means that they extend toward the head of the user when the eyeglasses 10 are worn. The curvature of the temples 14 helps to exert pressure on the user's head to ensure a proper fit of the eyeglasses 10. Here, each temple 14 extends in the continuation of the curved portion 18 of the frame front 12. Thus, when viewed from above (see FIG. 1 ), the temples 14 are substantially curved toward the interior of the eyeglasses 10, which means that they extend toward the head of the user when the eyeglasses 10 are worn. The curvature of the temples 14 helps to exert pressure on the user's head to ensure a proper fit of the eyeglasses 10. Figure 3), the glasses 10 have a generally circular shape suitable for clamping the user's head.

[0048] The tip 30 may be attached to the distal end of each temple 14 so that it extends in the extension of the temple 14. The tip 30 is intended to rest on the ear of the user. The tip 30 may be elastomeric to increase the comfort of the user when wearing the eyeglasses 10. The tip 30 may include a housing 32 and a groove 34 that are intended to engage with a tab 36 and a rib 38 formed on each temple 14.

[0049] As in Figure 4 and 5 As can be better seen in the figure, the proximal end of each temple 14, near the frame front 12, has a flexible portion 40. The flexible portion 40 forms a resilient hinge, thereby allowing the temple 14 to rotate relative to the frame front 12 generally around the rotation axis X. The flexible portion 40 pushes the temple 14 toward the interior of the eyeglasses 10, thereby allowing the temple 14 to be resiliently supported on both sides of the user's head.

[0050] Here, the flexible portion 40 includes a series of protrusions 42 aligned along the longitudinal direction of the corresponding temple 14. The protrusions 42 protrude from an outer wall 44 of the flexible portion 40 opposite to the user's head when the glasses 10 are worn toward an inner surface 46 of the flexible portion 42 facing the user's head when the glasses 10 are worn. The free spaces separating the protrusions 42 provide flexibility to the flexible portion 40.

[0051] Here, each protrusion 42 forms a tooth 48 extending parallel to the rotation axis X. Here, the teeth 48 extend downward when the spectacles 10 are worn. All teeth 48 are parallel to each other, so that the teeth 48 define a channel 50 extending in the longitudinal direction of the temple 14. The channel 50 is open parallel to the inner surface 46 of the flexible part 40 (here downward) for example Figures 7 to 10 The longitudinal body 68 of the resilient insert 62 is shown received by a push fit.

[0052] The elastic insert 62 is made of a flexible material, in particular an elastomer.

[0053] The longitudinal body 68 may have a rectangular section, here a square section, but any other section is conceivable. The longitudinal body 68 is inserted into the channel 50 (here from the bottom) to rest on the bottom of the channel 50 by being held by the teeth 48. The channel 50 may have a width (perpendicular to the inner surface 46) corresponding to the width l1 of the longitudinal body 68 to receive the longitudinal body substantially without play.

[0054] The channel 50 defined by the teeth 48 can extend to both sides of the flexible portion 40 through two slots 54 arranged in the corresponding temple 14 (see Figures 4 to 6). Each slit 54 is open toward the inner surface 46 of the flexible portion 40 (meaning toward the interior of the eyeglasses 10). Therefore, the slits 54 are adapted to keep the longitudinal body 68 parallel to the aforementioned inner surface 46. The slits 54 may have a height (parallel to the inner surface 46) corresponding to the height H1 of the longitudinal body 48 to receive the longitudinal body substantially without gaps.

[0055] The end of the slot 54 opposite the series of protrusions 42 opens into a cavity 52 arranged in the temple 14. The cavity 52 opens toward the inner surface 46 of the flexible portion 40 (meaning toward the interior of the eyeglass 10).

[0056] The cavity 52 receives the tenons 64, 66 provided at opposite ends of the resilient insert 62 by push fit (see Figures 7 to 10 ). The tongues 64, 66 abut against the ends of the cavity 52 near the slot 54 for placing the longitudinal body 68 of the elastic insert 62 under tension. This tension causes an elastic stress on the temple 14 towards each other, thereby rotating substantially around the axis of rotation X.

[0057] Tenons 64, 66 have a height H1 measured parallel to inner surface 46 that is greater than height H2 of longitudinal body 68. Each cavity 52 may have the same height H1 as tenons 66, 68 so as to receive tenons 66, 68 with substantially no play in height (meaning parallel to axis of rotation X).

[0058] As in Figures 4 to 6 As can be clearly seen from the figure, each cavity 52 can be extended on both sides of the corresponding slot 54 by a groove 61 parallel to the inner surface 46, and the groove is defined between the outer wall 44 and the edge 60 of the temple 14.

[0059] These grooves 61 are pushed into place ( Figures 7 to 10 ) to receive a shoulder 70 of the tenons 64, 66 having a corresponding shape so as to retain the tenons 64, 66 in the cavity 52 perpendicular to the inner surface 46.

[0060] An opening 63 extending parallel to the axis of rotation X may be formed in the temple 14 adjacent each cavity 52 to allow the groove 61 to be molded.

[0061] like Figures 6 to 10As shown, each cavity 52 can have a main portion 56 in which the corresponding tenon 64, 66 can slide along the longitudinal direction of the temple 14. This portion 56 has a length L1 in the longitudinal direction along the temple 14, which is greater than or equal to the length L2 of the tenon 64, 66 (including the shoulder 70) in order to allow the tenon 64, 66 to be placed in the cavity 52 during the installation of the elastic insert 62, or to be removed from the cavity 52 during the removal of the elastic insert 62, for example in order to replace the elastic insert.

[0062] The portion of cavity 52 opposite slot 54 thus remains free when elastic insert 62 is installed. This free portion not only allows translational movement of tenons 64, 66 to release shoulder 70, but also allows a tool to be inserted under tenons 64, 66 to make their removal easier by lever effect.

[0063] The cavity 54 may include an end portion 58 extending along the main portion 56 opposite the slot 54 and facilitating the insertion of the tool. This end portion 58 may have a pointed shape converging away from the slot 54.

[0064] The length of the elastic insert 62 measured along the longitudinal direction of the temple 14 may be between 20 mm and 30 mm. However, any other length of the elastic insert 62 is contemplated. The length of the elastic insert 62 may be selected to adjust the stress applied by the elastic insert 62 to the flexible portion 40 of the frame front 12.

[0065] The elasticity of the resilient insert 62 may also be selected to adjust the stress applied by the resilient insert 62 to the flexible portion 40 of the frame front 12 .

[0066] Thus, in particular when several types of elastic inserts 62 (different lengths and / or elasticities) are available, the tightness of the temple 14 on the user's head can be adjusted to optimize the comfort of wearing the glasses and / or the retention of the glasses. In particular, if the user wants to change the type of use of the glasses (e.g., leisure / sports) or wants to change the tightness of the temple 14 for any other reason, or even wants to replace an aged elastic insert 62 with a new one, the elastic insert 62 can be replaced.

Claims

1. A pair of spectacles (10) with an elastic hinge, comprising two temples (14) and a frame front part (12) capable of supporting a lens (16), wherein each temple (14) extends in a longitudinal direction between a distal end remote from the frame front part (12) and a proximal end connected to the frame front part (12), and wherein the proximal end of the frame front part (14) comprises a flexible portion (40), the flexible portion having an inner surface (46) arranged to be oriented towards the head of a user when the spectacles (10) are worn, The eyeglasses (10) further comprise, for each temple (14), an elastic insert (62) removably attached adjacent the inner surface (46) of the flexible portion (40), wherein the elastic insert (62) determines the tightness of the temple (14) on the head of the user when the eyeglasses (10) are worn.

2. The glasses (10) according to claim 1, characterized in that The resilient insert (62) is attached in the flexible portion (40) of the temple (14) by press fit.

3. The glasses (10) according to claim 1 or 2, characterized in that: The resilient insert (62) includes a first tenon (64), a second tenon (66), and a longitudinal body (68) extending between the first tenon (64) and the second tenon (66), wherein the first and second tenons (64, 66) are press-fitted on both sides of the flexible portion (40) so as to apply traction on the longitudinal body (68) when the temples (14) are separated from each other.

4. The glasses (10) according to claim 3, characterized in that The first and second tenons (64, 66) are press fit in a cavity (52) formed in the flexible portion (40).

5. The glasses (10) according to claim 4, characterized in that The cavity (52) opens toward the inner surface (46) of the flexible portion (40).

6. The glasses (10) according to claim 5, characterized in that Each tenon (62, 64) comprises at least one shoulder (70) extending towards the longitudinal body (68), the at least one shoulder engaging in a groove (61) extending the corresponding cavity (52) below the flange (60) of the corresponding temple (14).

7. The glasses (10) according to claim 6, characterized in that Part of each cavity (52) is held free by the tenon (64, 66) so as to allow sufficient displacement of the tenon (64, 66) in the cavity (52) for releasing the shoulder (70) from the corresponding groove (61).

8. The spectacles (10) according to any one of claims 4 to 7, characterized in that Adjacent each cavity (52), the longitudinal body (68) is received in a slot (54), wherein the slot (54) opens toward the inner surface (46) of the flexible portion (40), and wherein the slot (54) extends along the longitudinal direction.

9. Spectacles (10) according to any one of the preceding claims, characterized in that The flexible portion (40) comprises an outer wall (44) and a series of protrusions (42) protruding from the outer wall (44) towards the inner surface (46), wherein the protrusions (42) are aligned along the longitudinal direction and respectively form teeth (48) extending parallel to the inner surface (46) to define a channel (50), and wherein the insert (62) can be press-fitted into the channel (50).

10. The glasses (10) according to claim 9, characterized in that All of the teeth (48) extend in the same direction and the channels (50) open parallel to the inner surface (46).

Images