EP3469416A1

EP3469416A1 - Hinge for a spectacles frame comprising at least one internal end stop

Info

Publication number: EP3469416A1
Application number: EP17724078.5A
Authority: EP
Inventors: Dominique Delamour
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-10
Filing date: 2017-05-19
Publication date: 2019-04-17
Also published as: FR3052566A1; FR3052566B1; WO2017211571A1; US20190265511A1

Abstract

A hinge for a spectacles frame, comprising a front face element (1), a side element (2) and a connecting element connecting said front face element (1) to said side element (2), said connecting element comprising a base member, mounted in the side element (2), and a head member (6), housed in a cavity in the front face element (1) so as to allow the side element (2) to be open/closed about a vertical first axis of articulation and so as to allow the side element (2) to be inclined about a horizontal second axis of articulation (X2), the front face element (1) comprises at least one internal end stop member (13) extending into said cavity (12) so as to limit the movement of the side element (2) about the horizontal second axis of articulation (X2).

Description

HINGE FOR EYEWEAR MOUNT COMPRISING AT LEAST ONE INTERNAL FASTENING

TECHNICAL FIELD AND PRIOR ART The present invention relates to the field of eyeglass frames and, more particularly, that of spectacle frame hinges.

Conventionally, a pair of glasses consists of a spectacle frame in which are mounted solar glasses, sight or fantasy. The spectacle frame comprises a front face, also called main frame, adapted to receive said glasses, and two branches mounted at the lateral ends of said front face. Each branch is connected to the main frame by means of a hinge which allows mainly to fold / unfold the branch. Subsequently, the terms horizontal and vertical are defined with respect to an eyeglass frame in the use position which comprises a front face in a vertical plane and longitudinal branches adapted to unfold in a horizontal plane, that is, that is, orthogonally to said front face along a vertical axis. Subsequently, the transverse plane designates the plane which is both orthogonal to the horizontal plane and to the vertical plane.

Ordinarily, a hinge comprises a front face member, a leg member and a connecting member connecting said front face member to said leg member so as to allow rotation of the leg member with respect to the front member. before in the horizontal plane. In other words, each hinge allows a horizontal rotation to fold / unfold the branches of the glasses relative to the front face between an open position and a closed position. Such a horizontal rotation is known from the prior art and will not be presented in more detail. In addition, such a hinge generally allows to allow over-opening relative to its traditional open position, which improves its life. The hinge also includes an elastic spring to facilitate closure / opening of the branch by accelerating the movement of the branch member. Moreover, in order to increase the life of a spectacle frame, it has been proposed to allow the rotation of the branches of the spectacles in the transverse plane about a horizontal axis in order to limit the risk of rupture during the manipulation of the branch. The branch of glasses can thus tilt at an angle called breaking.

It has been proposed by patent application FR3023928A1 a hinge for spectacle frames, comprising a double articulation so as to allow the branches to open / close in the horizontal plane while being able to tilt in the transverse plane. For this purpose, it has been proposed a hinge comprising a front face element in which is formed an internal cavity to allow the housing of a head member of the connecting element.

In order to allow relative movement in the horizontal plane of the branch element with respect to the front face element (rotation about a first vertical axis of rotation), the body of the front face element comprises a first guide slot, extending in the horizontal plane, which is formed continuously on both sides of the front face member. Thus, the connecting element can move between the open position and the closed position of the hinge. Similarly, in order to allow a relative movement in the transverse plane of the branch element with respect to the front face element (rotation about a second horizontal axis of rotation), the front face element comprises a second guide slot which extends in the transverse plane to allow both downward and upward inclination.

The ends of the guide slots form stops for the branch member when the latter is closed / open / over-open or inclined transversely upwards or downwards. To ensure the robustness of the hinge, the walls of the front face member must be thick in order to form stops of sufficient strength despite the presence of the guide slots. If it is desired to make a hinge of reduced dimensions, it is not possible to reduce the thickness of the walls of the front face member 1 without impacting the strength of the hinge, which has a disadvantage. An immediate solution would be to reduce the length of the guide slots but this limits the amplitude of inclination in the horizontal plane and in the transverse plane. The performance of the hinge is then reduced. The invention therefore aims to remedy this drawback by proposing a new elastic hinge, that is to say with an elastic spring, adapted to allow a first rotation in a horizontal plane and a second rotation in a transverse plane with high amplitudes while being robust and having small dimensions.

GENERAL PRESENTATION OF THE INVENTION The invention relates to an eyeglass frame hinge, comprising a front face element, a branch element and a connecting element connecting said front face element to said branch element, said connecting element comprising a base member, mounted in the branch member, and a head member, housed in a cavity of the front face member to allow opening / closing of the branch member about a first axis of vertical articulation and inclination of the branch element around a second horizontal axis of articulation.

The hinge is remarkable in that the front face element comprises at least one internal stop member extending in said cavity so as to limit the movement of the branch member about the second horizontal axis of articulation.

Thus, the inclination of the leg member is internally limited by the stop member of the front face member. The branch element advantageously no longer abuts with one end of a guide slot of the front face element, which allows the formation of a front face element of reduced thickness. A hinge of reduced size can thus be advantageously manufactured. When the branch member is inclined in the breaking position, its inclination is optimally limited by the internal stop member. The hinge obtained is thus robust.

In addition, since the internal stop member extends into the inner cavity, the force applied by the leg member to the front face member is reduced because the lever arm is shorter than in the prior art. The dimensions of the stop member can be reduced by forming an optimum stop. We obtain advantageously a hinge performance can tilt along two axes of articulation whose strength is increased.

Preferably, the front face element comprises at least two internal stop members so as to define a displacement amplitude around the second axis of articulation. The use of two stop members makes it possible to limit the movement of the branch element about an axis of articulation in order to avoid undesired excessive displacement. Preferably, the internal stop members are symmetrical in order to allow an angular deflection centered on a central rest position, in particular the opening position of the hinge.

In a preferred aspect, the inner stop member extends at one end of said internal cavity to facilitate mounting of the link member in the front face member.

Advantageously, the front face element having means for closing said internal cavity, the internal stop member belongs to said closing means. Advantageously, the internal stop member is removably mounted in the front face member, in particular on the closure means. The internal stop member may advantageously be put in place after mounting of the connecting element in the front face element. Preferably, the closure means are in the form of a cover. Such a hood makes it possible, on the one hand, to prevent the removal of the connecting element and, on the other hand, to set up the internal stop member.

Preferably, the head member comprises at least one projecting member adapted to cooperate with the internal stop member. Thus, the movement of the branch member is limited directly in the internal cavity by the head member, no insert being necessary. More preferably, the protruding member is adapted to cooperate with the internal abutment member according to a flat surface. Co-operation on a flat surface makes it possible to offer high mechanical strength while guaranteeing great stability. In addition, the wear of such a flat surface is limited.

Preferably, the head member comprises two projecting members so as to cooperate with two internal stop members.

The invention also relates to an eyeglass frame comprising a front face, two lateral branches, each lateral branch being connected to said front face by a hinge as presented above.

PRESENTATION OF THE FIGURES The invention will be better understood on reading the description which will follow, given solely by way of example, and referring to the appended drawings in which:

Figure 1 is a schematic perspective representation of a pair of spectacles according to the invention;

Figure 2 is a schematic representation of a hinge of the pair of glasses in section in the horizontal plane;

Figure 3 is a schematic side view of an open hinge; Figure 4 is a schematic sectional representation of the hinge of Figure 3;

Figure 5 is a schematic perspective view of a closed hinge;

Figure 6 is a schematic side view of the hinge of Figure 5;

Figure 7 is a schematic sectional representation of a hinge in over-opening position; and

- Figure 8 is a schematic representation in perspective of a hinge in the breaking position. It should be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate. DESCRIPTION OF ONE OR MORE MODES OF REALIZATION AND IMPLEMENTATION

Referring to Figure 1, there is shown a pair of glasses 400 having a spectacle frame 300 in which are mounted glasses 301 G, 301 D. Thereafter, with reference in particular to Figure 1, the spectacle frame 300 is described in an orthogonal reference (X, Y, Z) in which the X axis extends horizontally from left to right, the Y axis extends in depth from front to back and the Z axis extends vertically from bottom to top. Subsequently, the plane (X, Y) is called the horizontal plane, the plane (X, Z) is called the vertical plane and the plane (Y, Z) is called the transverse plane.

The spectacle frame 300 comprises a front face 1 00, also called main frame, extending in the vertical plane (X, Z) which has a left opening 1 01 G and a right opening 1 01 D for respectively receiving a left glass 301 G and a straight glass 301 D.

Still with reference to FIG. 1, the spectacle frame 300 further comprises a left lateral branch 200G and a right lateral branch 200D which are respectively mounted at the left and right lateral ends of said front face 1 00 by a left hinge 4G and a 4D right hinge. In this example of implementation, the hinges 4G, 4D are symmetrical. For the sake of clarity and brevity, only the left hinge 4G will be described later.

As illustrated in FIG. 2, the left hinge 4G connects the left lateral branch 200G to the left end of the front face 1 00. According to the invention, the left hinge 4G comprises a front face element 1, a branch element 2 and a connecting element 3 connecting said front face element 1 to said branch element 2. By front face element 1 is meant an element which forms a part of the front face 1 00. Said front face element 1 can be a part removable / reported part of main of the front face 100 or be integrated in the front face 100. Similarly, by branch member 2 is meant an element which forms part of the side branch 200G. Said branch element 2 may be a removable part of a main part of the lateral branch 200G or may be integrated in said lateral branch 200G.

Still, with reference to FIG. 2 and as explained below, thanks to the hinge 4G, the branch element 2 is articulated along a first axis of vertical rotation ZI and a second axis of horizontal rotation X2 with respect to the front panel element 1 by virtue of the connecting element 3. Thus, with reference to FIG. 1, thanks to the first axis of vertical rotation ZI, each lateral branch 200G, 200D can move in the horizontal plane (X, Y) in order to fold / unfold the side branches 200G, 200D. Similarly, thanks to the second horizontal axis of rotation X2, each side branch 200G, 200D can move in the transverse plane (Y, Z) to absorb shocks and improve the life of the pair of glasses.

With reference to FIG. 2, the connecting element 3 cooperates, on the one hand, with the front face element 1 and, on the other hand, with the branch element 2 in order to allow the two ZI rotations. , X2 as will be presented later.

As illustrated in FIG. 2, the connecting element 3 comprises a base member 5, mounted in the branch element 2 and projecting in the front face element 1, and a mounted head member 6 in the front panel element 1. The members 5, 6 of the connecting element 3 will be presented later in the detailed description of the connecting element 3.

Subsequently, the open position of the hinge 4G denotes the position of the hinge 4G when the branch 200G is unfolded, that is to say, aligned along the axis Y. The term closed position of the hinge 4G, the position of the hinge 4G when the branch 200G is folded, that is to say, aligned along the axis X. Similarly, the term "break position" of the hinge 4G, the position of the hinge 4G when the branch 200G is inclined around the second axis of articulation X2. As shown in Figures 3 and 4, the front face member 1 comprises a rigid body 10, preferably made of metal, but it is obvious that other materials could be suitable for example a metal / plastic alloy. The rigid body 10 preferably has a parallelepipedal shape, more preferably a cubic shape, defining an opening face O, a closing face F and a mounting face M.

The opening face O of the front face member 1 corresponds to the face in contact with the branch member 2 in the open position of the hinge 4G. Similarly, the closing face F of the front face member 1 corresponds to the face in contact with the branch member 2 in the closed position of the hinge 4G.

In this example, the opening face O and the closing face F respectively comprise a moving opening surface and a closed closing surface. Preferably, each moving surface defines a curved relief as taught by the patent application WO2010100087. Similarly, as will be presented hereinafter, the branch element 2 has an active active surface to cooperate with the moving surfaces of the opening face O and the closing face F to facilitate the opening and the closing of the left side branch 200G.

Advantageously, the opening face O and the closing face F each comprise elementary contact points distributed at the corners of said faces in order to limit the wear of the hinge 4G during its handling between its open position and its position. closing position. It goes without saying that the invention also applies to a front face element 1 without moving surfaces.

Referring to Figure 3, the front face member 1 further comprises connection means 1 1 to a portion of the front face 100 which is in the form of a tenon. Nevertheless, it goes without saying that said connection means 1 1 could be in another form, for example, a tongue or a pin.

With reference to FIG. 3, the body 10 comprises an internal cavity 12 accessible from a mounting opening 120 formed in the mounting face M of said body 10 so that to allow the housing of the head member 6. Preferably, the mounting face M is opposed to the closure face F. In this embodiment, the inner cavity 12 has a cylindrical shape and the mounting aperture 120 is circular so as to allow the passage of the head member 6 in the form of a cylinder. Preferably, the mounting opening 120 is closed by closure means after assembly of the head member 6. In this example, the closing means are in the form of a cover 16 mounted in a slide but it goes without saying that it could have a different shape and be mounted differently. In this example, with reference to FIG. 4, the internal cavity 12 comprises an inner guide surface adapted to allow guiding of the head member 6. Preferably, the guide surface is in the form of a surface cylindrical of circular section. It goes without saying that the guide surface could be discontinuous and have a plurality of elementary guide surfaces.

Referring now to Figures 4 and 5, to allow, on the one hand, a relative movement in the horizontal plane (X, Y) of the leg member 2 relative to the front face member 1 (rotation around of the first axis of rotation ZI) and, on the other hand, a relative movement in the transverse plane (Y, Z) of the branch element 2 with respect to the front face element 1 (rotation about the second axis of rotation X2), the body 10 of the front face member 1 has a guide slot 14 which is formed continuously in the opening face O and the closing face F. The portion of the guide slot 14, formed in the opening face O, is enlarged so as to allow relative movement in the transverse plane (Y, Z). In this embodiment, there are no two guide slots as in the prior art but only an enlarged portion, which facilitates the manufacture of the front face element 1 and improves its robustness. Preferably, the edges of the guide slot 14 are tapered to improve the guidance. The walls, belonging to the body 10 of the front face element 1 and delimiting the guide slot 14, may have a small thickness as will be presented later since they do not form stops for the element of link 3.

Preferably, the guide slot 14 extends over the entire horizontal length of the opening face O to allow over-opening of the branch 200G, that is, that is, a rotation of the left branch 200G about the first axis of rotation ZI in the opposite direction to the right branch 200D as shown in FIG. 7.

The opening section of the guide slot 14 is smaller than the section of the mounting aperture 120 so that the closing face F forms a stop wall upon insertion of the head member 6 as will be presented later.

Such a front face element 1 is simple to manufacture by machining since it does not have complex shapes, which is advantageous.

As illustrated in Figures 3 and 4, the branch member 2 comprises a rigid body 20, preferably metal, but it is obvious that other materials could be suitable for example a metal alloy / plastic. The rigid body 20 preferably has a generally parallelepiped shape defining a front face A, a rear face and side faces. The front face A, referred to as active face A, extends substantially in the vertical plane (X, Z) in the open position of the hinge. As indicated above, the active face A of the branch element 2 has an active moving surface in order to cooperate with the moving surfaces of the opening and closing faces F of the front face element 1 as a function of the opening or closing the hinge. The active active surface of the leg member 2 has a shape complementary to the moving surfaces of the front face member 1. The branch member 2 further comprises connecting means 21 to a portion of the branch 200G which is presented, with reference to Figure 7, in the form of a post formed from the rear face of the rigid body 20. Nevertheless, it goes without saying that said connection means 21 could be in another form, for example, a tab. Advantageously, said connection means 21 also define a bearing surface of the elastic spring 7 as will be presented later.

Still with reference to FIG. 7, the rigid body 20 of the branch element 2 also has a through opening 22 extending substantially perpendicularly to the active face A, that is to say, along the depth axis Y when the hinge 4G is open. The opening 22 also passes through the connection means 21. The branch member 2 can thus accommodate and guide the base member 5 of the connecting element 3 in its opening 22 as will be presented later. Preferably, the base member 5 of the connecting element 3 can translate along the axis of the opening 22.

In this example, the section of the through opening 22 is shaped to prevent rotation of the base member 5 of the connecting element 3 with respect to the branch element 2 about the axis of the opening 22. The section of the through opening 22 is here rectangular but it goes without saying that it could be different. Preferably, the section of the through opening 22 is smaller at the connection means 21 than at the front face A of the rigid body 20. Such a branch element 2 is simple to manufacture by machining since it does not have complex shapes, which is advantageous.

The connecting element 3, as shown in Figure 2, comprises a base member 5 and a head member 6 which are hinged together about the first axis of articulation ZI. For this purpose, the head member 6 extends horizontally along the X axis while the base member 5 extends along the Y axis in the open position.

The connecting element 3 is made of metal to have a high mechanical strength and low wear. Nevertheless, it goes without saying that the connecting element 3 could be made of other materials, for example, a metal / plastic alloy.

Referring to Figures 3 and 4, the base member 5 comprises a longitudinal rod 50 which is connected to a connecting bar 51 extending vertically along the first axis of articulation ZI. In this embodiment, with reference to Figure 8, the longitudinal rod 50 and the connecting bar 51 of the base member 5 are independent but it is obvious that they could form a one-piece forged assembly. With reference to FIG. 3, the longitudinal rod 50 comprises a front part adapted to protrude into the front face element 1 and a rear part adapted to be guided in the branch element 2. The front part of the rod longitudinal 50 has a front end of annular shape in which is formed a through opening 52 axis ZI (Figure 4). The connecting bar 51 is adapted to cooperate in the through opening to form a vertical axis joint ZI. The longitudinal rod 50 has a mounting portion having a section of complementary shape to the through opening 22 of the leg member 2. In this example, the mounting portion has a rectangular section. The rear portion of the longitudinal rod 50 has a smaller section than the section of the front portion so that the rear portion remains in abutment in the branch member 2. Still with reference to Figure 3, the rear portion of the rod longitudinal 50 has an annular section so as to be inserted into an elastic spring 7, preferably a compression spring. Preferably, the elastic spring 7 is crimped at one end so as to constrain the elastic spring 7. Nevertheless, it goes without saying that other constraint means could be suitable. In particular, the rear portion of the longitudinal rod 50 could comprise a threaded portion to allow the screwing of a nut between the front portion of the longitudinal rod 50 and said nut to adjust the tension of the elastic spring 7. The use of Such an elastic spring 7 is known to those skilled in the art and will not be presented in more detail. With reference to FIG. 4, the connecting rod 51, housed in the through opening 52 of the longitudinal rod 50, protrudes from above said opening 52 along the vertical axis ZI in order to cooperate with the organ party 6 as will be presented later. Referring to Figure 7, the base member 5 further comprises a notch 55 adapted to abut with the front face member 1 and thus limit the over-opening around the axis of articulation ZI. With reference to FIG. 4, the festoon member 6 is in the form of a one-piece cylindrical piece comprising a mounting groove 65 for the passage of the front part of the longitudinal rod 50 and an opening 64 for the passage of the connecting bar 51 as illustrated in Figure 4. The head member 6 has an outer guide surface which is in the form of a cylindrical envelope portion of annular section extending along the second axis of articulation X2 in order to cooperate, in a complementary manner, with the internal guiding surface of the internal cavity 12 of the front face element 1. The head member 6 comprises a mounting groove 65 defining a housing delimited by two flat faces, in which the longitudinal rod 50 is mounted.

As indicated above, the head member 6 further comprises a through opening 64 to cooperate with each of the two ends of the connecting bar 51 protruding on either side of the longitudinal rod 50. The through opening 64 s' extends orthogonally to the flat faces of the mounting groove 65. In this embodiment, the opening 64 is blind and does not pass through the head member 6, which facilitates mounting. In the mounted position, the opening 64 of the head member 6 is aligned with the opening 52 of the base member 5 to allow mounting of the connecting bar 51.

The base member 5 is thus articulated about the first axis of articulation ZI with respect to the head member 6 by means of the connecting bar 51 in order to allow the base member 5 to rotate relative to the head member 6 in the horizontal plane (X, Y). The branch can thus move between opening, closing and over-opening positions.

Similarly, the connecting element 3 is articulated around the second hinge axis X2 with respect to the front face element 1 in order to allow the connecting element 3 to rotate relative to the front element. before 1 in the transverse plane (Y, Z). The branch can thus move between high breaking and low breaking positions. The outer guide surface of the head member 6 has a diameter smaller than that of the internal cavity 12, of the order of 1 to 2 mm in order to provide a clearance during assembly while allowing optimal guidance. According to the invention, the front face member 1 further comprises two internal stop members 13 extending in said internal cavity 12 of the front face member 1 so as to limit the movement of the branch member 2 around the axis of rotation X2, that is to say, to limit the breaking angle of the branch. Such internal abutment members 13 make it possible to define an angular range of displacement β around the second axis of articulation X2.

As illustrated in FIG. 8, the internal stop members 13 are symmetrical so that the angular range of displacement is centered on the opening position of the branch, that is to say, when the branch element 2 s extends orthogonally to the front face 100.

In order to cooperate with the internal stop members 13 of the front face member 1, the head member 6 comprises two projecting members 63 adapted to limit the relative movement between the connecting element 3 and the front element. before 1. It goes without saying that the number of internal abutment members 13 and protruding members 63 could be different depending on the needs.

Still with reference to FIG. 8, the internal stop members 13 belong to the closing cap 16 and extend at one end of said internal cavity 12, close to the mounting face M. In this example, the projecting members 63 extend at one end of the head member 6 so as to come into contact with the internal stop members 13 as a function of the inclination of the leg member 2 about the second horizontal hinge axis X2. Preferably, each protruding member 63 is adapted to cooperate with an internal abutment member 13 along a flat surface to allow a firm and robust abutment, which improves the strength of the hinge while allowing its miniaturization. The assembly of a hinge will be presented from now on. In this example, the connecting element 3 has been assembled beforehand. Firstly, the longitudinal rod 50 of the base member 5 is successively inserted in the opening of the mounting face M of the front face member 1 and then in the through opening 22 of the branch element. 2 so that the connecting element 3 is in the branch element 2.

During the insertion, the longitudinal rod 50 is guided in the guide slot 14 of the front face element 1. Because of the difference in section, the front portion of the longitudinal rod 50 abuts in the leg member 2 and remains projecting with respect to said leg member 2.

Then, the head member 6 of the connecting element 3 is introduced by the mounting face M of the front face member 1 to be housed in the internal cavity 12 and abut against the closing face F. The protruding members 63 then extend close to the mounting face M. Then, the opening 120 of the mounting face M is closed by the introduction of the closure cap 16. Any undesirable movement of the member head 6 is thus eliminated. In addition, since the closure cap 16 has internal stop members 13, the movements of the head member 6 are directly limited when the closure cover 16 is put in place.

The active face A of the branch element 2 is then pressed against the opening face O of the front face element 1 so that their moving surfaces cooperate. The tension of the elastic spring 7, which keeps the front face member 1 in contact with the leg member 2, is then adjusted by crimping. In the open position, the longitudinal rod 50 extends in the center of the guide slot 14 of the opening face O.

Mounting such a hinge is simple to achieve, which saves time and a reduction in the cost price of the frame formed from said hinges.

As shown in FIG. 3 showing the open hinge viewed from the side, the active active surface of the leg member 2 is in contact with the open opening surface of the front face member 1. To bend the side branch, a user moves the side branch to the front face. Thanks to the articulation between the base member 5 and the head member 6, the connecting element 3 can rotate in the internal cavity 12 of the front face member 1 around the axis of articulation ZI . During rotation, the base member 5 moves in the guide slot 14, in particular in the opening face O and the closing face F. As illustrated in FIG. 5, the connecting bar 51 allows to guide the rotation of the branch. In the closed position, with reference to FIGS. 5 and 6, the lateral branch extends along the X axis in the horizontal plane (X, Y) and the active active surface of the branch element 2 is in contact with the surface movement of the closing face F of the front face element 1. When closing, the internal stop members 13 are not put to use.

Furthermore, since the guide slot 14 of the front face member 1 extends over the entire horizontal length of the opening face O, the lateral branch can move over-opening as shown in FIG. 7. Thus, the branch can move in the horizontal plane (X, Y) over an angular range of the order of -45 to + 90 ° relative to its reference open position. Similarly, during over-opening, the internal stop members 13 are not used. The notch 55 of the base member 5 contacts the front face member 1.

The inclination of the branch in a breaking position will now be presented. Starting from the open position of the hinge, the active face A of the branch element 2 is in contact with the opening face O of the front face element 1. With reference to FIG. 8, the user moves the lateral branch vertically upwards in the transverse plane (Y, Z). The head member 6 rotates about its axis in the internal cavity 12 when the leg member 2 is moved around the hinge axis X2 until a protruding member 63 of the head 6 comes into abutment with an internal stop member 13. Thus, during the rotation, the base member 5 moves in the guide slot 14 of the front face member 1, in particular in the face As the guide slot 14 is widened in the opening face O, the side branch can tilt both downwards and upwards. Thus, the branch can move in the transverse plane (Y, Z) over an angular range β of the order of -45 ° to + 45 ° with respect to its reference open position. This angular range β can advantageously be parameterized as a function of the position of the internal abutment members 13 and the protruding members 63.

As the edges of the guide slot 14 are curved, the lateral branch can be moved in directions comprising a component along the first axis of articulation ZI and a component along the second axis of articulation X2 in order to give flexibility to the hinge and better resistance in its open position.

Moreover, thanks to the elastic spring 7 and the nature of the connecting element 3, the hinge 4G is automatically returned to a centered open position when the user no longer acts on the side branch.

Advantageously, during the rotation of the branch element 2 about the hinge axis X2 in the open position, the periphery of the guide slot 14 is not stressed and may be of reduced thickness. . A miniaturized performance hinge can then be obtained.

Thanks to the hinges according to the invention, the spectacle frame 300 is more resistant and allows various manipulations without risk of damage (folding, unfolding, over-opening, displacement in the transverse plane, etc.) while having a simple structure can be miniaturized with few constraints. In addition, its cost is reduced compared to the prior art given the simplicity of manufacture of the connecting element 3 and its ease of assembly. Finally, such a hinge is integrated into the frame, that is to say, not visible by the end user, which has an aesthetic advantage.

Claims

Hinge (4G, 4D) for spectacle frames (300), comprising a front face element (1), a temple element (2) and a connecting element (3) connecting said front face element (1) to said element branch (2), said connecting element (3) comprising a base member (5), mounted in the branch element (2), and a head member (6), housed in a cavity (1 2) of the front face element (1) in order to allow opening/closing of the branch element (2) around a first vertical articulation axis (ZI) and an inclination of the branch element (2 ) around a second horizontal articulation axis (X2), the head member (6) having an exterior guide surface which is in the form of a cylindrical envelope portion of annular section extending along the second articulation axis (X2) in order to cooperate, in a complementary manner, with the interior guiding surface of the cavity (12) of the front face element (1), hinge (4G, 4D) characterized in that the front face element (1) comprises at least one internal stop member (1 3) extending into said cavity (1 2) so as to limit the movement of the branch element (2) around the second axis horizontal articulation (X2).

Hinge (4G, 4D) according to claim 1, in which the front face element (1) comprises at least two internal stop members (1 3) so as to define an amplitude of movement around the second articulation axis

(X2).

3. Hinge (4G, 4D) according to claim 2, wherein the internal stop members (13) are symmetrical.

4. Hinge (4G, 4D) according to one of claims 1 to 3, wherein the internal stop member (13) extends at one end of said internal cavity (1 2).

5. Hinge (4G, 4D) according to one of claims 1 to 4, wherein, the front face element (1) comprising means for closing said internal cavity (12), the internal stop member ( 13) belongs to said closing means. Hinge (4G, 4D) according to one of claims 1 to 5, in which the head member (6) comprises at least one projecting member (63) adapted to cooperate with the internal stop member (1 3) .

Hinge (4G, 4D) according to claim 6, in which the projecting member (63) is adapted to cooperate with the internal stop member (13) along a flat surface.

Hinge (4G, 4D) according to one of claims 6 to 7, in which the head member (6) comprises two symmetrical projecting members (63).

Hinge (4G, 4D) according to one of claims 1 to 8, in which the internal stop member (13) is removably mounted. 10. Spectacle frame (300) comprising a front face (100), two side branches (200G, 200D), each side branch (200G, 200D) being connected to said front face (100) by a hinge (4G, 4D) according to one of the preceding claims.