Glasses hinge

Abstract

Eyewear hinge (1) comprising a first hinge element (2) having thereon a base body (20) with a slit (22), and a second hinge element (3) having thereon an engagement head (32) arranged in said slit (22) and rotationally coupled to the first hinge element (2). Furthermore, the hinge (1) comprises an anti-friction element (4), which is located in the slit (22) of the first hinge element (2) and which has a support portion (40) that encounters the base body (20). According to the invention, the base body (20) of the first hinge element (2) has a shaped engagement surface (24), and the support part (40) of the antifriction element (4) has a coupling surface (44) which is counter-shaped with respect to the engagement surface (24) and is coupled thereto.

Description

[0001] describe

[0002] Application

[0003] The invention relates to a hinge for glasses.

[0004] This type of hinge is primarily useful for the production of eyeglass frames.

[0005] The hinge is therefore part of the eyewear industry or the production of eyewear frames and eyewear accessories and components.

[0006] Technical status

[0007] As is well known in the eyewear industry, hinges are used to connect the stem and the front of the frame.

[0008] Traditionally, each hinge consists of two mutually pivoted articulated elements, wherein a first element is fixed to the rod of the frame and a second element is fixed to one of the lateral parts of the front part (also called "nose" in the terminology of the industry).

[0009] More specifically, the first hinge element is the female part of the hinge, comprising two first shoulders extending from the rod, with a gap between the two shoulders. The shoulders of the first hinge element have first holes, the first hole being smooth and the last hole being threaded, which are called the eyes of the female hinge element.

[0010] More specifically, the second hinge element is the male part of the hinge, having a second shoulder extending from the nose and having a second hole, usually referred to as the eyelet of the male element of the hinge. The second shoulder is designed to be inserted into the slit defined by the first shoulder.

[0011] The hinge also comprises a hinge screw which can be engaged in the eyelet of the hinge elements to rotate them together and which is screwed into a threaded hole in one of the two first shoulders of the first hinge element (female).

[0012] Functionally, the hinge allows the rod to rotate between a closed position, in which the hinge is tucked into the front of the spectacles, and an open position, in which it assumes a position roughly at right angles to the front, so that the user can wear the spectacles.

[0013] A disadvantage of eyeglass hinges of known type is that, due to the sliding friction between the shoulders of the two hinged elements (usually made of metal), the hinge is prone to jamming, thus preventing its normal and correct operation.

[0014] To solve this problem, it is known to lubricate the hinges, for example with oil, to reduce the sliding friction between the hinge elements and thus the friction of the hinge itself.

[0015] However, practice has shown that the above oil lubrication technology is not without disadvantages.

[0016] The first disadvantage is that oiling the hinges at the eyeglass production stage is likely to stain the rest of the frame, a stage that must be adequately performed to avoid stains and / or halos on the frame itself or its container. This requires the operator to perform a subsequent cleaning operation adequately to avoid stains and / or halos on the frame itself or its container.

[0017] To remedy the above drawbacks, we try to use hinges that do not require lubrication of the hinge elements.

[0018] For example, one known technique is to over-inject plastic material into the shoulder of the male hinge element of the hinge, so that the sliding between the shoulders of the two hinge elements occurs between the metal of the female hinge element and the over-injection on the male hinge element. More specifically, the over-injected material is polyamide PA66, which is loaded in a liquid phase on a plastic injection mold and then over-injected onto the male element part of the hinge.

[0019] However, even the above-described overinjection technique has proven in practice to be not without disadvantages.

[0020] The first drawback is that, especially in plastic frames, the male hinge element for the overinjection is usually fixed to the nose or the stem by a plunge operation. During this operation, the anchoring part of the hinge element is heated to a temperature above the melting temperature of the material of which the eyeglass frame is made (usually a polymer material such as acetate) and then inserted inside the eyeglass frame. During this operation, the temperature can easily exceed 200° C., which may very well lead to the deterioration of the plastic used for the overinjection and thus to the loss of its functionality.

[0021] In order to reduce the risk of deterioration of the over-injected plastic during the immersion operation, it is necessary to adopt a regulation system to keep the shoulder of the male hinge element with the over-injected plastic at an acceptable temperature, which leads to increased complexity and cost of the production process.

[0022] In addition, document GB 597.064 also mentions a hinge equipped with a metal fork, which is located between the shoulder of the male hinge element and the shoulder of the female hinge element to compensate for the gap between the two shoulders and ensure uniform friction of the hinge during rotation.

[0023] In particular, the corresponding holes on the metal fork arms are aligned with the holes of the hinge element so that the hinge screws can pass through. In particular, the fork is provided with elastic tongues along the arm holes that engage with the hinge screws to prevent them from loosening.

[0024] Furthermore, the arms of the metal fork have a wavy profile so that they can be squeezed to elastically fit the gap between the shoulders.

[0025] The female hinge element consists of two different mirrored parts, each of which contains a shoulder of the hinge element. Thus, when assembling the hinge, the metal fork must be placed around the shoulder of the male hinge element and then the male hinge element is inserted between the two mirrored parts of the female hinge element. The two mirrored parts are then fixed together with a screw or other tool so that the wavy arm of the metal fork and the shoulder of the male hinge element are pressed between the two shoulders of the female hinge element.

[0026] However, even this last known solution has proven to be not without its drawbacks.

[0027] A first disadvantage is that the above-mentioned elastic fork must be used with a female articulated element consisting of two separate parts, since in the rest state (not compressed) the spring fork is too wide to be inserted from the outside between the shoulders of the entire female articulated element.

[0028] Therefore, the metal fork can only be installed during the final assembly of the eyeglass hinge. This means that the hinge manufacturer must send the hinge to the eyeglass manufacturer completely unpacked, and some parts may be lost during the logistics process.

[0029] Furthermore, the corrugated shape of the hinge arms means that there is always a potential for a gap between the two hinged elements, rendering the hinge itself unstable.

[0030] Invention Introduction

[0031] Under such circumstances, the main problem to be solved by the present invention is to eliminate the defects of the above-mentioned known technology and provide a glasses hinge with anti-friction elements which is simple and convenient to use.

[0032] Another object of the present invention is to provide an eyeglass hinge that does not require oil lubrication of the hinge elements.

[0033] Another object of the present invention is to provide an eyeglass hinge having an appropriate degree of friction between the two hinged elements.

[0034] Another object of the present invention is to provide an eyeglass hinge that can be easily transported (for example to an eyeglass manufacturer) without the risk of losing parts.

[0035] Another object of the present invention is to provide an eyeglass hinge that is easy for eyeglass manufacturers to assemble.

[0036] Another object of the present invention is to provide a glasses hinge with a simple structure and low cost.

[0037] Drawing Description

[0038] In accordance with the above objectives, the technical features and advantages of the present invention are generally embodied in the following detailed description, and the accompanying drawings are provided for reference, which show certain purely exemplary and non-definitive implementation forms, wherein:

[0039] Figure 1 a perspective view showing a spectacle frame equipped with the hinge;

[0040] Figure 2a A perspective view showing a hinge made according to a first implementation form of the present invention;

[0041] Figure 2b show Figure 2b Exploded view of the hinge;

[0042] Figure 2c and 2d Display separately Figure 2a a side view of the hinge and a side view of a portion of its cross section;

[0043] Figure 2e and 2f Display separately Figure 2a an anti-friction element and a first hinge element of the hinge;

[0044] Figure 3 show Figure 2a Perspective view of hinge variants;

[0045] Figure 4a and Figure 4b A perspective view showing a second embodiment of the hinge according to the present invention ( Figure 4a ) and Section View ( Figure 4b );

[0046] Figure 4c and 4d Display separately Figure 4a A side view of the hinge and a partial cross-sectional side view thereof;

[0047] Figure 4e and 4f Display separately Figure 4a an anti-friction element and a first hinge element of the hinge;

[0048] Figure 5 show Figure 4a Perspective view of hinge variants;

[0049] Figure 6a and Figure 6b Perspective views showing a third embodiment of the hinge of the present invention ( Figure 6a ) and Section View ( Figure 6b );

[0050] Figure 6c and 6d Display separately Figure 6a a side view of the hinge and a side view of a portion of its cross section;

[0051] Figure 6e and 6f Display separately Figure 6a an anti-friction element and a first hinge element of the hinge;

[0052] Figure 7 show Figure 6a Perspective view of hinge variants;

[0053] Figure 8a and Figure 8b Perspective views showing a fourth embodiment of the hinge of the present invention ( Figure 8a ) and Section View ( Figure 8b );

[0054] Figure 8c and 8d Display separately Figure 8a a side view of the hinge and a side view of a portion of its cross section;

[0055] Figure 8e and 8f Display the devices equipped with TAG recognition Figure 8a A perspective view of the hinge and a partially cutaway side view;

[0056] Figure 8g and 8h Display separately Figure 4a an anti-friction element and a first hinge element of the hinge;

[0057] Fig. 9 show Figure 8a Perspective view of hinge variants;

[0058] Fig.10 A side view showing a partial section of a fifth embodiment of the hinge according to the present invention.

[0059] Detailed description of an excellent example

[0060] With reference to the accompanying drawings, a spectacles hinge 1 implemented according to the present invention is fully illustrated.

[0061] According to the invention, the hinge 1 is designed for producing any type of eyeglass frame 10 , in particular frames made of metal and frames made of polymer material, such as acetate or a material suitable for processing by 3D printing, in particular nylon.

[0062] The hinge 1 is intended to articulate two parts of a spectacle frame 10 to each other in a conventional manner known per se.

[0063] In more detail, refer to Figure 1 In the example shown, the frame 10 comprises, in a conventional manner, a front part having two annular parts (or "circles") designed to support the corresponding lenses and connected by a bridge in the central part, and a pair of rods that rotate by hinges on both sides of the front part, more precisely, on its two lateral parts facing the back of the glasses, known in the technical terminology of the industry as noses.

[0064] Functionally, the hinges allow the bars to move between a closed position, in which they are tucked away to the front of the frame 10, and an open position, in which they are substantially at right angles to the front.

[0065] The eyeglass hinge 1 of the present invention comprises a first hinge element 2, which is used to be mounted on a first element 11 of an eyeglass frame 10, and comprises a base 20 and two first shoulders 21, which are suspended and extended from the base 20 in parallel to each other, forming a slit 22 between them and having corresponding first holes 23 aligned with each other.

[0066] The eyeglass hinge 1 also includes a second hinge element 3, which is used to be mounted on the second element 12 of the eyeglass frame 10 and includes an engaging head 32 having at least one second hole 33, which is located in the slit 22 of the first hinge element 2 (especially between the first shoulders 21 of the first hinge element), and the second hole 33 is aligned with the first hole 23 of the first hinge element 2.

[0067] The first and second connecting elements 2, 3 are preferably made of a metallic material, such as nickel silver, steel or titanium.

[0068] Preferably, according to the example shown in the drawings, the first component 11 of the eyeglass frame 10 corresponds to a rod of the eyeglass frame 10 , and the second component 12 of the eyeglass frame 10 corresponds to the front of the eyeglass frame 10 .

[0069] Reference will be made below to the preferred embodiment in the accompanying drawings, in which the first part 11 of the eyeglass frame 10 consists precisely of a rod and the second part 12 consists of the front part of the frame 10, but it is also possible to provide an embodiment in which the two parts are reversed, in particular an embodiment in which the first hinge element 2 is mounted on the front part and the second hinge element 3 is mounted on the rod, without thereby exceeding the scope of protection of the present invention.

[0070] The spectacles hinge 1 further comprises an anti-friction element 4 having a support portion 40 and two arms 41 which are suspended and extend from the support portion 40 in parallel with each other, are spaced apart from each other and have corresponding third holes 43 which are aligned with each other.

[0071] The anti-friction element 4 is located in the slit 22 of the first hinge element 2, the support part 40 touches the base 20, each arm 41 is located between a corresponding first shoulder 21 of the first hinge element 2 and the engaging head 32 of the second hinge element 3, and the third hole 43 is aligned with the first hole 23 and the second hole 33.

[0072] In this way, the arm 41 of the anti-friction element 4 can prevent the engaging head 32 of the second hinge element 3 from directly contacting the first shoulder 2 of the first hinge element 2, thereby preventing high friction from being generated between the first shoulder 21 and the engaging head 32 when opening and closing the hinge 1, so as to avoid the hinge from getting stuck.

[0073] In addition, the eyeglass hinge 1 also includes a hinge pin 5, which is inserted into the first hole 23 of the first shoulder 21 of the first hinge element 2, the second hole 33 of the engaging head 32 of the second hinge element 3 and the third hole 43 of the arm 41 of the anti-friction element 4, and is rotatably coupled to the first hinge element 2 and the second hinge element 3 around a rotation axis W passing through the first hole 23, the second hole 33 and the third hole 43.

[0074] The hinge pin 5 comprises, for example, a screw having, in a known manner, a head touching the first shoulder 21 and a threaded shank inserted into the first hole 23 and the second hole 33 and engaged by being screwed into the first hole 23 of the first shoulder 21 opposite to the screw head. So, in particular, the first hole 23 of the first shoulder 21, onto which the screw head touches, is a smooth through hole, and the first hole 23 of the first shoulder 21, into which the screw shank is screwed, is threaded and may be a blind hole.

[0075] Optimally, the first hinge element 2 can rotate around the rotation axis W (make relative movement relative to the second hinge element 3), move the hinge 1 from the open position to the closed position in a closing direction, and move the hinge 1 from the closed position to the open position in an opposite opening direction.

[0076] According to the basic idea of ​​the invention, the base 20 of the first hinge element 2 has a shaped engagement surface 24 , and the support portion 40 of the anti-friction element 4 has a coupling surface 44 which is shaped opposite to the engagement surface 24 and is coupled thereto.

[0077] In addition, the mating surface 24 of the base 20 has a first contact surface 25 extending between the first shoulders 21 and defining the rear of the slit 22 , and a second contact surface 26 adjacent to the first contact surface 25 , inclined relative to the first contact surface, and located outside the slit 22 .

[0078] Likewise, the coupling surface 44 of the supporting portion 40 has a first supporting surface 45 that contacts the first contact surface 25 , and a second supporting surface 46 that is adjacent to the first supporting surface 45 and is inclined relative to the first supporting surface and contacts the second contact surface 26 .

[0079] In this way, the shapes of the engagement surface 24 of the base 20 and the coupling surface 44 of the support portion 40 can prevent the anti-friction element 4 from rotating relative to the first hinge element 2 during the opening and closing of the lever.

[0080] In particular, the inclination of the second contact surface 26 relative to the first contact surface 25 and the inclination of the second support surface 46 relative to the first support surface 45 allow the anti-friction element 4 to remain integral with the first hinge element 2 .

[0081] Preferably, the first shoulder 21 of the first joint element 2 extends in a cantilevered manner from the base body 20 , starting from the first contact surface 25 of the engagement surface 24 .

[0082] Advantageously, the slot 22 is (completely) closed at the rear, in particular it is (completely) closed by the first contact surface 25 of the engagement surface 24 .

[0083] Optimally, the base 20 is closed on one of its outer sides which, when the hinge 1 is in the open position, faces in the opposite direction to the outer side of the base 20 of the first hinge element 20 of the other hinge 1 (in the open position of the glasses).

[0084] Advantageously, the first shoulders 21 of the first articulation element 2 comprise respective inner faces 210 , which are opposite one another and are separated by a slot 22 defined between the first shoulders 21 .

[0085] Optimally, each first shoulder 21 of the first hinge element 2 has an outer surface 211 facing the inner surface 210 and a first outer surface 212 extending along a rotation axis W connecting the inner surface 210 and the outer surface 211 to define the thickness of the first shoulder 21 itself.

[0086] Advantageously, the engagement head 32 of the second articulation element 3 comprises two side faces 320 , each facing a corresponding arm 41 of the anti-friction element 4 .

[0087] Optimally, each arm 41 of the anti-friction element 4 has a first return surface 42 facing and contacting the inner surface 210 of the corresponding first shoulder 21 , and a second return surface 42 ′ facing and contacting the side surface 320 of the corresponding engaging head 32 .

[0088] In particular, the two arms 41 define a first gap 412 between the respective second return surfaces 42 ′, in which the engagement head 32 of the second joint element 3 is located.

[0089] Advantageously, each arm 41 is substantially flat and has a very small thickness compared to the other two dimensions.

[0090] Optimally, the first and second return surfaces 42, 42' of each arm 41 are substantially flat and orthogonal to the rotation axis W. In particular, in order to fit against the inner surface 210 of the first shoulder 21 and the side surface 320 of the engaging head 32 respectively, they are preferably flat and orthogonal to the rotation axis W.

[0091] Advantageously, the first and second contact surfaces 25 , 26 of the engagement surface 24 of the base body 20 of the first joint element 2 are adjacent to each other.

[0092] Advantageously, the first and second contact surfaces 25, 26 of the mating surface 24 of the base 20 of the first hinge element 2 define a first coupling angle (excluding 180°) with each other, and the first and second supporting surfaces 45, 46 of the coupling surface 44 of the supporting portion 40 of the anti-friction component 4 define a second coupling angle with each other, which is complementary to the above-mentioned first coupling angle (excluding 180°).

[0093] In particular, the first coupling angle is concave and the second coupling angle is convex (e.g. Figure 2a-3 , 8a-10), and vice versa (as shown in the examples Figure 4a-7 ).

[0094] According to the implementation form shown in the drawings, the first and second contact surfaces 25, 26 are connected (at the vertex of the first coupling angle) by a first common clear edge (sharp edge or acute angle), which is optimally parallel to the rotation axis W. Similarly, the first and second support surfaces 45, 46 are connected (at the vertex of the second coupling angle) by a second common clear edge (sharp edge or sharp angle), which is optimally parallel to the rotation axis W.

[0095] On the other hand, according to an implementation form not shown in the figure, the first and second contact surfaces 25, 26 are connected by a first rounded edge, and the first and second support surfaces 45, 46 are connected by a second rounded edge.

[0096] Advantageously, the base body 20 is developed along a development direction Y orthogonal to the rotation axis W between a first side 201 corresponding to the second articulation element 2 and an opposite second side 202 .

[0097] Preferably, the basic body 20 comprises a profiled portion 15 having the aforementioned first shoulder 21 and preferably comprises an extension plate 13 fixed to the profiled portion 15 .

[0098] Optimally, according to the implementation form of the hinge 1 shown in the accompanying drawings, the extension plate 13 extends longitudinally along the above-mentioned development direction Y, between a first end 13' located on the above-mentioned first side 201 of the base 20 and an opposite second end 13" located on the second side 202 of the base 20.

[0099] In particular, the extension plate 13 has an inner surface 130 which faces the extension plate 13 of the first hinge element 2 mounted on the other rod of the spectacles when the hinge 1 is in the open position.

[0100] Advantageously, the molded portion 15 is fixed to the inner surface 130 of the extended long plate 13 by welding or the like.

[0101] Advantageously, the extension plate 13 has an outer surface facing in the opposite direction to the inner surface 130 and is closed (without a through hole).

[0102] Preferably, the first hinge element 2 is fixed (for example by welding) to a core 14 embedded in the plastic material of the rod of the frame 10. More specifically, the second end 13" of the extension plate 13 is intended to be fixed to the core 14, which is designed to be forcibly inserted longitudinally into the plastic matrix of the rod.

[0103] Furthermore, with reference to a non-illustrated form of realization, the first articulated element 2 (in particular comprising only the shaped portion 15 ) is fixed (for example by welding) to the rods of a frame 10 , preferably a metal frame.

[0104] Furthermore, in another embodiment not shown, the first articulated element 2 is designed to be partially immersed in a first part 11 (whether a stem or a nose) of a frame 10 (preferably made of a polymer material), in particular in a conventional manner by means of an anchoring portion pre-set on the molded part 15.

[0105] Advantageously, according to e.g. Figure 2a-9 In the first to fourth embodiments shown, the base body 20 of the first hinge element 2 is engaged to the support portion 40 of the anti-friction element 40 by a form coupling obtained on the engagement surface 24 of the base body 20 and the coupling surface 44 of the support portion 40 .

[0106] In particular, according to the first to fourth embodiments, the base body 20 of the first hinge element 2 has an engagement seat 27 on the engagement surface 24 .

[0107] Preferably, the support portion 40 of the anti-friction element 4 has a coupling pin 47 which is suspended and extended outward from the coupling surface 44 and is inserted into the engagement seat 27 in a form-fitting manner to achieve the above-mentioned form coupling.

[0108] In particular, this configuration of the engagement seat 27 and the coupling pin 47 allows locking the anti-friction element 4 to the first articulated element 2 in a simple and secure manner during assembly of the hinge 1 .

[0109] Advantageously, the coupling pin 47 engaged with the engagement seat 27 facilitates the coupling of the anti-friction element 4 to the first hinge element 2. In fact, the presence of the coupling pin 47 facilitates the work of the operator, who must fix the anti-friction element 4 in the correct direction in order to couple it to the first hinge element 2, and in particular, the operator can be facilitated by placing the coupling pin 47 corresponding to the engagement seat 27.

[0110] This means, in particular, that even during storage and transport of the hinge 1 (for example when sending it to an eyeglass manufacturer), the anti-friction element 4 remains firmly coupled to the first hinge element 2, even if the first hinge element has not yet been hinged to the second hinge element 3 via the hinge pin 3.

[0111] Optimally, according to the first to fourth implementation forms, the engagement seat 27 is formed on the first contact surface 26 of the engagement surface 24 of the base 20 , and the coupling pin 47 is located on the first support surface 45 of the coupling surface 44 of the support portion 40 .

[0112] In this way, by inserting the coupling pin 47 into the engagement seat 27 and making the first supporting surface 45 contact the first contact surface 25 and the second supporting surface 46 contact the second contact surface 26 , coupling of the anti-friction element 4 to the first hinge element 2 is facilitated.

[0113] Furthermore, without departing from the scope of the present invention, the coupling pin 47 may be suspended from the second support surface 46 , and the engagement seat 27 may be optimally located on the second contact surface 26 .

[0114] Advantageously, the coupling pin 47 depends from the coupling surface 44 along a development axis X orthogonal to the axis W of rotation.

[0115] Preferably, the coupling pin 47 extends with a constant cross section along the development axis X, from the coupling surface 44 to one of its free ends 470 . According to another variant embodiment, the coupling pin 47 comprises at least one conical section terminating in the above-mentioned free end 470 .

[0116] Preferably, the engagement seat 27 has an extension parallel to the development axis X of the coupling pin 47 to facilitate the insertion of the coupling pin into the engagement seat 27 .

[0117] Best, according to Figure 2a-3 and Figure 8a-9 In the first and fourth embodiments of the hinge 1 shown, the development axis X of the coupling pin 47 is also orthogonal to the development direction Y of the base body 20 .

[0118] During operation, in order to couple the first hinge element 2 to the anti-friction element 4, the anti-friction element is placed above the first hinge element 2, preferably opposite the extension plate 13 relative to the base 20, and then slid parallel to the above-mentioned development axis X so that the coupling pin 47 is inserted into the engagement seat 27.

[0119] In addition, according to Figure 4a-7 In the second and third embodiments of the hinge 1 shown, the axis X of development along which the coupling pin 47 develops is parallel to the development direction Y of the base body 20 , in particular to at least a portion of the first support surface 45 of the anti-friction element 4 .

[0120] In this case, the anti-friction element 4 is coupled to the first hinge element 2 by placing it at approximately the same height as the base 20 relative to the extension plate 13 so that it corresponds to the second contact surface 26 of the engagement surface 24, and then sliding it parallel to the development direction Y so that the coupling pin 47 is inserted into the engagement seat 27.

[0121] Furthermore, according to an implementation form not shown, the coupling pin 47 may be inclined relative to the development direction Y and a direction orthogonal to the development direction Y.

[0122] Advantageously, the engagement seat 27 is closed, in particular extending from the engagement surface 24 of the base body 20 to its closed bottom.

[0123] According to an implementation form not shown in the accompanying drawings, the engagement seat is formed on the coupling surface 44 of the support portion 40 of the anti-friction element 4, and the coupling pin is suspended from the engagement surface 24 of the base 20 of the first hinge element 2 (and is inserted into the engagement seat with shape coupling to determine the above-mentioned shape coupling).

[0124] Advantageously, the anti-friction element 4 is made of a polymer material, for example a self-lubricating plastic, in particular polyoxymethylene, also called polyoxymethylene or POM, or Teflon.

[0125] In this way, the friction between the anti-friction element 4 and the first shoulder 21 of the first joint element 2 and the engagement head 32 of the second joint element 3 can be reduced particularly easily.

[0126] Optimally, the anti-friction element 4 is formed in one piece, for example by injection molding. This makes the manufacture and assembly of the hinge 1 particularly simple and economical.

[0127] In addition, the anti-friction element 4 may also be made of a metal material (such as bronze or steel), and may be coated with a surface coating (such as molybdenum disulfide) to reduce surface roughness, thereby further reducing friction.

[0128] Advantageously, the first contact surface 25 and the second contact surface 26 of the substrate 20 are arranged in sequence, especially along the aforementioned development direction Y of the substrate 20 itself, more specifically from the first side 201 of the substrate 20 toward the second side 202 of the substrate 20 .

[0129] Optimally, the anti-friction element 4 extends along the development direction Y between a third side 401 and an opposite fourth side 402 of a placement arm 41 .

[0130] Advantageously, the first support surface 45 and the second support surface 46 of the anti-friction element 4 are arranged in sequence, in particular along the development direction Y, more specifically from the third side 401 towards the fourth side 402 of the anti-friction element 4 .

[0131] Optimally, according to Figure 2a-7 and Fig.10 In the first to third and fifth embodiments shown, the second contact surface 26 of the base body 20 is located between the first side 201 and the first contact surface 25 .

[0132] More specifically, according to these implementations, the second contact surface 26 at least partially extends onto the inner surface 130 of the extension plate 13 of the first hinge element 2 , in particular, extends between the molded portion 15 and the first side 201 of the base body 20 .

[0133] Optimally, the first supporting surface 45 of the anti-friction element 4 is adjacent to the fourth side 402 , and the second supporting surface 46 is adjacent to the third side 401 .

[0134] Optimally, the second support surface 46 of the anti-friction element 4 is located between the first support surface 45 and the third side 401 .

[0135] Advantageously, according to Figure 2a-3 10, the second contact surface 26 of the substrate 20 includes at least one first segment 26' parallel to the development direction Y, and at least one second segment 26" transverse to the first segment 26', and is placed as a connection between the first contact surface 25' and the first segment 26'.

[0136] In particular, the first section 26 ″ and the second section 26 ″ define an engagement step 28 facing the first side 201 .

[0137] Advantageously, the supporting portion 40 of the anti-friction element 4 comprises a protruding base 48 which depends from the coupling surface 44 , engages with the engagement step 28 and defines a second supporting surface 46 .

[0138] Optimally, the base 48 rests on the extension plate 13 , in particular on the first section 26 ′ of the second contact surface 26 .

[0139] In particular, the second support surface 46 comprises a first area 46', optimally parallel to the development direction Y, resting on the first section 26' of the second contact surface 26', and a second area 46", optimally transverse to the first area 46', resting on the second section 26" of the second contact surface 26".

[0140] According to these first and fifth embodiments, the first and second sections 26 ′, 26 ″ and preferably also the first and second regions 46 ′, 46 ″ are connected to one another at a right angle.

[0141] Optimally, when the second area 46 ″ of the second support surface 46 rests on the second section 26 ″, the base 48 engages with the engagement step 28 and during opening and closing of the lever, the anti-friction element 4 is locked in relative rotation relative to the first hinge element 2 and thus remains integral with the lever.

[0142] In particular, the first section 26 ′ of the second contact surface 26 is connected to the first contact surface 25 via the first common edge.

[0143] Advantageously, according to Figure 8a-9 In the fourth embodiment of the hinge 1 shown, the second contact surface 26 of the base body 20 is located between the second side 202 and the first contact surface 25 .

[0144] In particular, also according to the fourth implementation form, the second support surface 46 is located between the fourth side 402 and the first support surface 45 .

[0145] In more detail, the first supporting surface 45 is adjacent to the third side 401 , and the second supporting surface 46 is adjacent to the fourth side 402 .

[0146] Advantageously, according to the fourth embodiment, the supporting portion 40 of the anti-friction element 4 comprises a covering attachment 49 which overhangs on the fourth side 402 , extends at least above the second contact surface 26 of the substrate 20 , and defines a second supporting surface 46 which contacts the second contact surface 26 .

[0147] Advantageously, refer to Figure 8a-9 In the implementation form, the anti-friction element 4 includes a housing seat 6, which has at least one opening 60 for inserting a TAG identification device 61 into the housing seat 6.

[0148] In more detail, the TAG recognition means 61 comprises an electronic element, for example of the RFID type, which can be read by an external reading device to transmit certain information, for example information on the authenticity of the frame, thereby distinguishing between genuine and fake products.

[0149] Optimally, the housing seat 6 extends from the opening 60 along a housing axis T substantially orthogonal to the rotation axis W.

[0150] More specifically, the opening 60 is formed on a front surface 440 of the support portion 40 located above the arm 41 .

[0151] In particular, the housing base 6 is at least partially deployed within the covering attachment 49 .

[0152] according to Figure 2a-2f In the above-mentioned first to fifth implementation forms shown in 4a-4f, 6a-6f, 8a-8h and 10, the hinge 1 is of a three-shoulder type, wherein the first hinge element 2 has two first shoulders 21, and the engaging head 32 of the second hinge element 3 has only one second shoulder 31 located between the above-mentioned two first shoulders 21.

[0153] according to Figure 3 , 5 In the variants of the above-mentioned first to fourth implementation forms shown in Figures 7 and 9, the hinge 1 is of the five-shoulder type.

[0154] In particular, according to these variants, the anti-friction element 4 has an intermediate arm 410 situated between and equidistant from the two arms 41 so as to form two first gaps 412 , and has a fourth through hole aligned with the third hole 43 of the above-mentioned arms 41 .

[0155] Advantageously, according to these implementation variants, the engaging head 32 of the second articulated element 3 comprises two second shoulders 31, each having a corresponding second hole 33, which are in particular located in the slit 22 of the first articulated element 2 and, in particular, in the corresponding first gap 412 of the anti-friction element 4 in the slit 22.

[0156] More specifically, the two second shoulders 31 are parallel to each other and define a second gap 34 with each other, and the middle arm 410 of the anti-friction element 4 is located in the gap.

[0157] Suitably, the invention is applicable both to non-elastic hinges (such as the implementation in the drawings) and to elastic hinges.

[0158] Therefore, the inventive concept has achieved the intended purpose.

Claims

1. A hinge (1) for spectacles, comprising: a first hinge element (2) designed to be mounted on a first part (11) of an eyeglass frame (10) and comprising a base (20) and two first shoulders (21) which depend from the base (20) parallel to each other, define a slot (22) between them and have corresponding first holes (23) aligned with each other; a second hinge element (3) designed to be mounted on a second part (12) of the eyeglass frame (10) and comprising an engagement head (32) having at least one second hole (33) arranged in the slit (22) of the first hinge element (2), and the at least one second hole (33) being aligned with the first hole (23); an anti-friction element (4) having a support portion (40) and two arms (41), the two arms extending in parallel from the support portion (40), being spaced apart from each other and having corresponding third holes (43) aligned with each other; wherein the anti-friction element (4) is arranged in the slit (22) of the first hinge element (2), the support portion (40) touches the base (20), and each arm (41) is located between a corresponding first shoulder (21) of the first hinge element (2) and the engaging head (32) of the second hinge element (3), and the third hole (43) is aligned with the first hole (23) and at least one second hole (33); a hinge pin (5) which is inserted into a first hole (23) of a first shoulder (21) of a first hinge element (2), a second hole (33) of an engaging head (32) of a second hinge element (3), and a third hole (43) of an arm (41) of an anti-friction element (4), and rotatably couples the first hinge element (2) and the second hinge element (3) together about a rotation axis (W) passing through the first hole (23), at least one second hole (33) and the third hole (43); The hinge (1) for glasses is characterized by: The base (20) of the first hinge element (2) has a shaped engagement surface (24), and the support portion (40) of the anti-friction element (4) has a coupling surface (44) which is shaped opposite to the engagement surface (24) and is coupled to the engagement surface (24); The mating surface (24) of the base (20) has a first contact surface (25) extending between the first shoulder 21 and defining the rear portion of the slit (22), and a second contact surface (26) adjacent to the first contact surface (25), inclined relative to the first contact surface, and located outside the slit (22); The coupling surface (44) of the supporting portion (40) has a first supporting surface (45) which contacts the first contact surface (25), and a second supporting surface (46) which is adjacent to the first supporting surface (45), is inclined relative to the first supporting surface, and contacts the second contact surface (26).

2. The spectacles hinge (1) according to claim 1, characterized in that: The base (20) of the first hinge element (2) is engaged to the support part (40) of the anti-friction element (40) by a shape coupling obtained on the engagement surface (24) of the base (20) and the coupling surface (44) of the support part (40).

3. The spectacles hinge (1) according to claim 2, characterized in that: The base (20) of the first hinge element (2) has an engagement seat (27) formed on the engagement surface (24), and the support portion (40) of the anti-friction element (4) has a coupling pin (47) suspended from the coupling surface (44) and inserted into the shape coupling in the engagement seat (27).

4. The spectacles hinge (1) according to claim 3, characterized in that: The engagement seat (27) is formed on a first contact surface (25) of the engagement surface (24) of the base (20), and the coupling pin (47) is located on a first support surface (45) of the coupling surface (44) of the support portion (40).

5. The spectacles hinge (1) according to claim 3, characterized in that: The coupling pin (47) extends cantilevered along a spreading axis (X) which is orthogonal to the rotation axis (W).

6. The spectacles hinge (1) according to claim 1, characterized in that The anti-friction element (4) is made of polymer material.

7. The spectacles hinge (1) according to claim 1, characterized in that: The base (20) is developed, at least along a development direction (Y) orthogonal to the rotation axis (W), between a first side (201) on which a second articulated element (2) is located and an opposite second side (202); Wherein, the first contact surface (25) and the second contact surface (26) of the substrate (20) are arranged in sequence along the development direction (Y); wherein the anti-friction element (4) extends along the development direction (Y) between a third side (401) and an opposite fourth side (402) of a placement arm (41); Wherein, the first supporting surface (45) and the second supporting surface (46) of the anti-friction element (4) are arranged in sequence along the development direction (Y).

8. The spectacles hinge (1) according to claim 7, characterized in that: The second contact surface (26) of the base (20) is located between the first side (201) and the first contact surface (25); Wherein, the second supporting surface (46) of the anti-friction element (4) is located between the first supporting surface (45) and the third side (401).

9. The spectacles hinge (1) according to claim 8, characterized in that: The second contact surface (26) of the base body (20) comprises at least one first section (26') parallel to the development direction (Y), and at least one second section (26") transverse to the first section (26') and located between the first contact surface (25) and the first section (26'); wherein the first section (26') and the second section (26") define an engagement step (28) facing the first side (201); The supporting portion (40) of the anti-friction element (40) includes a protruding base (48) which is suspended and extends on the coupling surface (44), engages with the engagement step (28) and defines a second supporting surface (46), wherein the second supporting surface (46) includes a first area (46') resting on a first section (26') of the second contact surface (26) and a second area (46") resting on a second section (26") of the second contact surface (26).

10. The spectacles hinge (1) according to claim 7, characterized in that: The second contact surface (26) of the base body (20) is located between the second side (202) and the first contact surface (25); Wherein, the second supporting surface (46) is located between the fourth side (402) and the first supporting surface (45).

11. The spectacles hinge (1) according to claim 10, characterized in that: The support portion (40) of the anti-friction element (4) comprises a covering attachment (49) which is suspended on the fourth side (402), extends above the second contact surface (26) of the base (20), and defines a second supporting surface (46) located on the second contact surface (26).

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