DE102018216510A1 - Method for manufacturing an eyeglass hinge part, profile for manufacturing an eyeglass hinge part, and eyeglass hinge part - Google Patents

Abstract

The invention relates to a method for producing an eyeglass hinge part (3), a profile (1) being produced along a manufacturing direction in which a hinge axis (S) of the eyeglass hinge part (3) to be produced extends, the profile (1) having a Profile cross section (5) is produced, which has a hinge eye area (7), a hinge attachment area (9), and a bending area (11) between the hinge eye area (7) and the hinge attachment area (9), the profile cross section (5) having at least a first Bending recess (13) is produced in the bending area (11).

Description

The invention relates to a method and a profile for producing an eyeglass hinge part and an eyeglass hinge part.

An eyeglass hinge part is designed to be connected to a further eyeglass hinge part to form an eyeglass hinge, in particular a first eyeglass hinge part being articulatedly connected to a second eyeglass hinge part about a hinge axis. One of the eyeglass hinge parts is attached to an eyeglass temple or is part of an eyeglass temple, the other eyeglass hinge part being attached to a central part of a pair of glasses, in particular an eyeglass frame, or being part of the central part of the glasses, in particular the eyeglass frame.

From the Italian patent application TV 2013 A000 102, a method for producing an eyeglass hinge part is known, wherein a profile is produced along a manufacturing direction that extends perpendicularly to an intended extension of a hinge axis of the eyeglass hinge part to be manufactured. To produce the spectacle hinge part, a spectacle hinge raw part is cut to length from the profile, which is finished to form the spectacle hinge part, in particular lateral bending recesses being made in the spectacle hinge raw part, which allow the spectacle hinge part to be inclined about a transverse axis of a wearer of spectacles equipped with the spectacle hinge part. The eyeglass hinge part formed in this way, however, in any case does not allow easy bending, in particular bending adaptation to a wearer of glasses equipped with the eyeglass hinge part, about a longitudinal axis of the wearer. A corresponding bending option would be difficult and difficult to incorporate into the spectacle hinge part.

The invention is therefore based on the object of providing a method for producing an eyeglass hinge part, a profile and an eyeglass hinge part, the disadvantages mentioned not occurring.

The object is achieved by creating the subject matter of the independent claims. Advantageous refinements result from the subclaims.

The object is achieved in particular by creating a method for producing an eyeglass hinge part, a profile being produced along a production direction in which a hinge axis of the eyeglass hinge part to be produced extends as intended. The direction of manufacture is thus in particular oriented parallel to the hinge axis of the spectacle hinge part to be manufactured. The profile is produced with a profile cross-section which has a hinge eye area, a hinge fastening area, and a bending area, the bending area being arranged between the hinge eye area and the hinge fastening area. These areas do not have to be delimited from each other by rigid boundaries, they can also flow smoothly into one another. In particular, the areas can overlap with one another. The profile cross section is produced with at least one first bending recess in the bending area. By choosing the direction of manufacture parallel to the intended arrangement of the hinge axis of the spectacle hinge part to be manufactured, the at least one first bend recess can already be provided in the profile cross section such that it later, in the finished spectacle hinge part, bends around a longitudinal axis of the wearer of spectacles having the spectacle hinge part - hereinafter referred to as carrier - allowed. This makes it possible to adapt the eyeglass frame and the eyeglass temples to the wearer in this direction or about this axis. Furthermore, this bending possibility can be provided in a very simple and cost-effective manner in that the at least one first bending recess is already provided in the profile cross section when the profile is being produced and is thus provided directly during the production of the profile. No elaborate post-processing steps are required for this.

A longitudinal axis of the wearer is understood to mean the body's longitudinal axis, which extends in the caudal or cranial direction, thus from the head to the feet - or vice versa. In the following, a transverse axis is to be understood as an axis of the carrier which extends along the transverse side of the body, from left to right or vice versa.

The direction of manufacture of the profile is in particular perpendicular to the profile cross section.

A hinge eye area is understood to mean an area of the profile cross section which is set up to have or form at least one hinge eye of the spectacle hinge part in the hinge eye area. The hinge attachment area is, in particular, an area of the profile cross section in which attachment means for attaching the eyeglass hinge part to an eyeglass temple or a central part of eyeglasses are or will be formed. The bending area is arranged between the hinge eye area and the hinge fastening area. It is thus possible to bend the spectacle hinge part between the hinge eye region and the hinge fastening region, and thus in particular later in the finished spectacles to change a bending angle between a temple and the middle part of the glasses, in particular to adapt them to a wearer.

The longitudinal axis of the carrier extends in particular parallel to the hinge axis of the spectacle hinge part when it is arranged as intended on the carrier.

The profile, including the at least one first bending recess, is preferably produced by extrusion, drawing or extrusion. However, any other suitable type of manufacture is also possible in which an elongated profile, in particular an endless profile, including the at least one first bending recess is produced.

The profile is preferably made of a metal or a metal alloy.

According to a development of the invention, it is provided that at least one eyeglass hinge blank is cut to length from the profile, the eyeglass hinge blank being finished to form the eyeglass hinge part. In this way, the spectacle hinge part in particular is obtained. The manufacture of the spectacle hinge part in this way is particularly simple and inexpensive.

According to a development of the invention, it is provided that the at least one first bend recess of the profile cross section is designed to be open at the edge. This later enables the eyeglass hinge part to be bent in a particularly simple manner, and has proven to be particularly favorable for the production of the profile, which can be produced particularly simply and inexpensively.

According to a development of the invention, it is provided that the profile cross-section is produced in the bending area with two first bending recesses lying opposite one another perpendicular to the production direction. This allows a particularly flexible bending of the hinge for glasses about the bending axis, here in particular the longitudinal axis of the carrier, in both bending directions.

According to a development of the invention, it is provided that the hinge fastening area is designed as a rivet fastening area or as a countersunk area. If the hinge fastening area is designed as a rivet fastening area, the spectacle hinge part is designed in particular as a rivet hinge part. In this case, rivet holes are preferably made in the hinge fastening area, which can later be penetrated by rivets. If the hinge fastening area is designed as a countersunk area, it is used in particular to fasten the spectacle hinge part in a plastic material, this preferably being softened, in particular by heating, with the spectacle hinge part with the countersunk area being sunk into the softened plastic. If the plastic cools down again, it solidifies at the same time and thus fixes the spectacle hinge part that is countersunk with the recessed area. The advantages already described are realized both with rivet hinge parts and with recessed or plastic hinge parts.

According to a development of the invention, it is provided that at least one second bend recess is produced during the finishing. In this way, in particular a second bending direction can be defined or a bending possibility can be created around a second bending axis. The second bend recess is preferably arranged on the hinge part of the spectacles in such a way that it allows a bend around the transverse axis of the wearer. Thus, with the spectacle hinge part proposed here, an adjustment / inclination of the spectacle hinge part can advantageously take place both about the longitudinal axis and about the transverse axis of the wearer.

In particular, the combination of the at least one first bend recess with the at least one second bend recess also enables an adjustment / inclination of the spectacle hinge part about the sagittal axis of the wearer.

The at least one second bending recess is preferably machined, in particular by sawing.

Preferably, two second bending recesses opposite one another along the production direction are produced during the finishing. These are preferably generated obliquely, in particular perpendicular to a depth direction of the at least one first bending recess. A depth direction of the at least one first bend recess is a direction in which the first bend recess extends from an edge of the profile cross section - in the transverse direction - into the interior thereof. Thus, the at least one second bend recess allows a bend around a bend axis that is perpendicular to the bend axis, about which the at least one first bend recess allows bending.

During finishing, hinge lobes are also preferably produced, in particular by machining, preferably by sawing. Hinge eyes are preferably drilled. It is also possible for at least one hinge eye to be created at the same time as the profile, in particular as a recess in the profile cross section. The hinge eye thus produced is preferably reworked, in particular re-drilled, after the spectacle hinge raw part has been cut to length.

In addition, rivet holes are preferably made during the final machining, in particular drilled, punched or milled, or countersunk feet are formed for the countersunk area, in particular by machining, preferably by milling. The rivet holes in the rivet fastening area preferably extend perpendicular to the hinge axis.

The object is also achieved by creating a profile for producing an eyeglass hinge part, wherein a longitudinal direction of the profile extends along a designated hinge axis of the eyeglass hinge part to be produced from the profile, and wherein the profile has a profile cross section with a hinge eye area, a hinge fastening area and a bending area between the hinge eye area and the hinge attachment area, the profile cross section in the bending area having at least a first bending recess. In connection with the profile, there are in particular the advantages which have already been explained in connection with the method. In particular, the profile is preferably produced according to a method according to the invention or a method according to one of the previously described embodiments.

According to a development of the invention, it is provided that the at least one bending recess is rounded off at least in some areas. This advantageously avoids an undesirably high edge load, tension during bending, and / or damage, in particular crack formation due to the introduction of bending forces.

Finally, the object is also achieved by creating an eyeglass hinge part which is produced by a method according to the invention or a method according to one of the previously described exemplary embodiments, or which is produced from a profile according to the invention or from a profile according to one of the previously described exemplary embodiments. In this context, the advantages that have already been explained in connection with the method and the profile are realized in connection with the spectacle hinge part.

• 1 eine Darstellung eines Profilquerschnitts eines ersten Ausführungsbeispiels eines Profils zum Herstellen eines Brillenscharnierteils;
• 2 Ansichten eines aus dem Profil gemäß 1 hergestellten, ersten Ausführungsbeispiels eines Brillenscharnierteils;
• 3 eine Darstellung eines Profilquerschnitts eines zweiten Ausführungsbeispiels eines Profils zum Herstellen eines Brillenscharnierteils;
• 4 Darstellungen eines zweiten Ausführungsbeispiels eines Brillenscharnierteils, das aus dem Profil gemäß 3 hergestellt ist;
• 5 eine Darstellung eines Profilquerschnitts eines dritten Ausführungsbeispiels eines Profils zum Herstellen eines Brillenscharniers, und
• 6 eine Darstellung eines aus dem Profil gemäß 5 hergestellten, dritten Ausführungsbeispiels eines Brillenscharnierteils.

The invention is explained in more detail below with reference to the drawing. Show:

• 1 a representation of a profile cross section of a first embodiment of a profile for producing an eyeglass hinge part;
• 2nd Views one from the profile according to 1 manufactured, first embodiment of a spectacle hinge part;
• 3rd a representation of a profile cross section of a second embodiment of a profile for producing an eyeglass hinge part;
• 4th Representations of a second embodiment of a spectacle hinge part, which according to the profile 3rd is manufactured;
• 5 a representation of a profile cross section of a third embodiment of a profile for manufacturing a spectacle hinge, and
• 6 a representation of a from the profile 5 manufactured, third embodiment of a hinge for glasses.

1 shows a plan view of a first embodiment of a profile 1 for making an in 2nd glasses hinge part shown 3rd . The image plane of 1 shows a profile cross section 5 of the profile 1 , which is perpendicular to the image plane of 1 along an intended hinge axis S of the spectacle hinge part to be manufactured 3rd extends. The profile 1 is preferably produced by extrusion, drawing, extrusion, or in another suitable manner, in particular from a metal or a metal alloy. It is manufactured along a manufacturing direction in which the hinge axis is intended S extends.

The profile cross section 5 has a hinge eye area 7 , a hinge attachment area 9 , and a bending area 11 on, the bending area 11 between the hinge eye area 7 and the hinge attachment area 9 is arranged.

When creating the profile 1 becomes the profile cross section 5 immediately, especially when extruding, drawing, extruding or the like with a first bending recess 13 produced. The profile cross section 5 already has this first bend recess due to the manufacturing process 13 to that extent not retrospectively, in particular not cutting, shaping or in any other way into the profile 1 must be introduced. The first bending recess 13 can be directly on the profile in a very simple and cost-effective manner 1 to be provided. It also allows the spectacle hinge part to bend 3rd about a longitudinal axis of a wearer of glasses, which is connected to the hinge part of the glasses 3rd Is provided. The bending axis, which is assigned to the first bending recess, extends parallel to the hinge axis S .

The hinge axis S stands here - as already follows from the foregoing - perpendicular to the image plane of 1 .

The first bending recess 13 is rounded off at least in some areas; with this one illustrated first embodiment, it has a rounded edge 15 on.

The first bending recess 13 extends from a - here right - edge of the profile cross-section 5 that of the hinge eye area 7 is assigned below the hinge eye area 7 towards the hinge attachment area 9 over a width B, which is preferably from at least 1 mm to a maximum of 2.5 mm. It also extends from one of the hinge eye areas 7 facing side surface 17th - Based on a later wearing position of the finished hinge part 3rd on glasses - in the direction of the hinge eye area 7 into the profile cross-section with a depth T which is from at least 0.2 mm to at most 0.6 mm.

The first bending recess 13 is particularly open-ended.

2nd shows two representations of the glasses hinge part 3rd which from the profile 1 according to 1 is produced, namely at a) a plan view and b) a cross-sectional view along the line AA from the view according to a). The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. The glasses hinge part 3rd is made by placing an eyeglass hinge blank from the profile 1 is cut to length, wherein the spectacle hinge raw part to the spectacle hinge part 3rd is finished so that the glasses hinge part 3rd is obtained.

In the first exemplary embodiment shown here, the hinge fastening area 9 as a rivet attachment area 19th trained so that the glasses hinge part 3rd is designed here as a rivet hinge. In particular rivet holes 21 , preferably by drilling, punching or milling, in the hinge mounting area 9 , brought in. Hinge tabs are also preferred during finishing 23 , preferably by machining, in particular by sawing, and hinge eyes 25th produced, particularly preferably also by machining, preferably by drilling.

Especially with the help of 2 B) it becomes clear that at least one second bend recess is preferred during finishing 27 , here two each other along the manufacturing direction of the profile 1 opposite second bends 27 are produced that are oblique, preferably perpendicular to the depth direction T and the width direction B of the at least one first bending recess 13 extend. The second bending recesses 27 are preferably machined, especially by sawing. In an advantageous manner, they allow the spectacle hinge part to be bent 3rd about a transverse axis of the beam.

3rd shows a representation of a profile cross section 5 a second embodiment of a profile 1 for the manufacture of a hinge for glasses 3rd . The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. This second exemplary embodiment differs from the first exemplary embodiment in particular in that the profile cross section here 5 with two first bending recesses opposite each other perpendicular to the direction of manufacture 13 in the bending area 11 will be produced. Here are the bending recesses 13 here completely rounded off, with their boundaries following in particular a circular line.

Furthermore, the hinge attachment area 9 geometrically different here than in the first embodiment according to 1 .

4th again shows two representations of a second embodiment of an eyeglass hinge part 3rd which from the profile 1 according to 3rd is obtained. The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. At a) there is a top view of the hinge for glasses 3rd and at b) a side view of the spectacle hinge part 3rd shown. It becomes clear that here during finishing in the hinge attachment area 9 Flat feet 29 are produced, in particular machining, preferably by milling or sawing. The hinge attachment area 9 is in this case as a sink area 31 formed, which is in particular set up to be sunk into flowable plastic and in this way the spectacle hinge part 3rd to attach to a temple or a middle part of glasses.

The hinge tabs are also shown 23 and hinge eyes 25th that when finishing one of the profile 1 cut to length spectacle hinge blank to the spectacle hinge part 3rd be generated.

Furthermore, in this case, too, the two second recesses already described in connection with the first exemplary embodiment are used for finishing 27 , preferably by sawing. These allow the hinge part to be bent 3rd around a bending axis that is on the image plane of 4a) is vertical.

In 4th it is further shown that the first bending recesses 13 bending the hinge about an axis A'-A ' allow that in the image plane of 4a) runs and on the image plane of 4b) is vertical. Is the glasses hinge part 3rd attached to glasses as intended and if they are worn by a wearer, this axis corresponds A'-A ' a longitudinal axis of the carrier. The second bend recesses 27 assigned bending axis then corresponds to a transverse axis of the beam.

Accordingly, it is also clear that the width direction B of the first bend recess 13 according to the first embodiment 1 corresponds to the sagittal axis of the beam, with the depth direction T is again oriented along the transverse axis.

5 shows a representation of a profile cross section 5 a third embodiment of a profile 1 for the manufacture of a hinge for glasses 3rd . The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. This third exemplary embodiment differs from the second exemplary embodiment in particular in that here the hinge fastening area 9 not in axial extension to the hinge eye area 7 Rather, it is arranged perpendicular to it, and the profile also shows 1 - Analogous to the first embodiment 1 - only a first bend recess 13 on.

6 shows a representation of a third embodiment of an eyeglass hinge part 3rd which from the profile 1 according to 5 is obtained. The same and functionally identical elements are provided with the same reference numerals, so that reference is made to the preceding description. When finishing are here in the hinge attachment area 9 that as a sink area 31 is formed, flat feet 29 produced here - in contrast to the second embodiment according to 4th - perpendicular to the hinge eye area 7 are oriented so that the glasses hinge part 3rd quasi to sink vertically - compared to the embodiment according to 4th - is trained.

Furthermore, this third embodiment is a three-lobe hinge part 3rd with three hinge tabs 23 educated.

In this case, too, the two second bends are made during finishing 27 generated.

Overall, a profile can be created with the method proposed here 1 as well as a hinge for glasses 3rd Are provided, which is simple and inexpensive to manufacture and also allows at least one bend around a longitudinal axis of a wearer of glasses, if the glasses with the glasses hinge part produced accordingly 3rd Is provided.

Claims (9)

A method of manufacturing an eyeglass hinge part (3), wherein - A profile (1) is produced along a manufacturing direction in which a hinge axis (S) of the spectacle hinge part (3) to be manufactured extends as intended, wherein - The profile (1) is produced with a profile cross section (5), which has a hinge eye area (7), a hinge attachment area (9) and a bending area (11) between the hinge eye area (7) and the hinge attachment area (9), wherein - The profile cross section (5) is produced with at least a first bending recess (13) in the bending area (11). Procedure according to Claim 1 , characterized in that at least one eyeglass hinge blank is cut to length from the profile (1), the eyeglass hinge blank being finished to form the eyeglass hinge part (3). Method according to one of the preceding claims, characterized in that the at least one bending recess (13) of the profile cross-section (5) is formed open to the edge. Method according to one of the preceding claims, characterized in that the profile cross section (5) is produced in the bending region (11) with two first bending recesses (13) lying opposite one another perpendicular to the production direction. Method according to one of the preceding claims, characterized in that the hinge fastening area (9) is designed as a rivet fastening area (19) or as a countersunk area (31). Method according to one of the preceding claims, characterized in that during finishing, at least one second bend recess (27), preferably two second bend recesses (27) opposite one another along the production direction, in particular at an angle, preferably perpendicular to a depth direction of the at least one first bend recess (13) is / are generated. Profile (1) for producing an eyeglass hinge part (3), a longitudinal direction of the profile (1) extending along an intended hinge axis (S) of the eyeglass hinge part (3) to be produced, the profile (1) having a profile cross section (5) with a hinge eye area (7), a hinge attachment area (9), and a bending area (11) between the hinge eye area (7) and the hinge attachment area (9), the profile cross section (5) having at least a first bending cutout (13) in the bending area ( 11). Profile (1) after Claim 7 , characterized in that the at least one bending recess (13) is rounded at least in some areas. Glasses hinge part (3), produced by a method according to one of the Claims 1 to 6 , or made from a profile (1) according to one of the Claims 7 and 8th .

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