Hinge with circular cam eyelets, for the elastic articulated joining of the temples to the front of an eyeglass frame

Patent metadata

Field	Value
Publication number	US-2016124244-A1
Application number	US-201414890083-A
Country	US
Kind code	A1
Filing date	May 9, 2014
Priority date	May 9, 2013
Publication date	May 5, 2016
Grant date	—

Abstract

A hinge for the articulated joining of eyeglass frame temples to their respective end pieces of the front of the frame, without requiring welding of eyelets or of other joining parts to the end pieces of the front and temple. The hinge is constituted by a pair of independent outer eyelets engaged with two tines provided at the hingeing end of the temple, and by a middle eyelet ( 10 ) engaged with two tines provided at the two side hingeing end pieces of the front of the eyeglass frame. The middle eyelet includes two coaxial cavities with contoured bottom surfaces that define circular or radial cams, these surfaces rotating and sliding on corresponding and mutually opposed radial cam surfaces of the outer eyelets which, with the rotation of the temples with which they are associated, cause an axial translational movement of those outer eyelets.

First claim

1 - 11 . (canceled)

12 . A hinge with circular cam eyelets, for the elastic articulated joining of the temples to the front of an eyeglass frame, for the provision of which no welding is required of eyelets or of other joining parts to the respective end pieces of the front and of the temple, and the insertion is not required of articulation screws or pins, wherein it involves providing a hinge that is constituted by a pair of two independent outer eyelets, to be engaged with two tines provided at the hingeing end of the temple, and by a middle eyelet, to be engaged with two tines provided at the two side hingeing end pieces of the front of the eyeglass frame, said middle eyelet being provided with two coaxial cavities, with contoured bottom surfaces that define circular or radial cams, these surfaces being able to rotate and slide on corresponding and mutually opposite radial cam surfaces of the outer eyelets which, with the rotation of the temples with which they are associated, cause an axial translational movement of said outer eyelets, this translational movement being opposed elastically by the tines of the hingeing ends of the temples, thus determining the opening and closing click of said temples on the front of the eyeglass frame.

13 . The hinge with circular cam eyelets according to claim 12 , wherein the central block of a hinge, for the articulated joining of the temple to the front of an eyeglass frame, is constituted by a middle eyelet, which can be associated with the end pieces of a front or with a lug, and by a pair of independent outer eyelets and, which are associable with said middle eyelet and with the hingeing end of a temple of an eyeglass frame.

14 . The hinge with circular cam eyelets according to claim 13 , wherein a middle eyelet has a side body, which is provided with an upper slit thereof and a corresponding lower slit, both of which are provided with a respective end cavity and with a respective adjacent abutment, and also is provided with a cylindrical middle part that is integral with a curved wall, said wall being adapted to define two mutually opposite open cavities that are mutually connected by an axial hole.

15 . The hinge with circular cam eyelets according to claim 14 , wherein the mutually opposite open cavities have an opposing axial end face or rim of the cylinder which is contoured to define a radial or spatial cam, with inclined radial surfaces that are adapted to determine at least one crest and at least one trough, for each one of the two mutually opposite cams.

16 . The hinge with circular cam eyelets according to claim 13 , wherein an independent eyelet, to be associated with the end of a temple, is constituted by a side body and by a cylindrical body, along which is defined a slit with a head cavity and with an adjacent abutment, while said cylindrical body has a cylindrical coaxial shank, arranged on the side thereof that is lower and opposite to the slit, and the lower part of said cylindrical body has a radial or spatial cam shape structure that corresponds to the cam of the middle eyelet and has similar dimensions and inclinations, with crests and with troughs.

17 . The hinge with circular cam eyelets according to claim 16 , wherein a lower outer eyelet is constituted by a side body and by a further cylindrical body, between which is defined a slit with a head cavity, and with an adjacent abutment, while said further cylindrical body is provided with a coaxial shank that is arranged on the side thereof that is upper and opposite to the slit, and the upper part of said further cylindrical body has a radial cam shape structure, with inclined walls, with crests and with troughs, which corresponds to the cam of the center ring and which has similar dimensions.

18 . The hinge with circular cam eyelets according to claim 17 , wherein the cylindrical body and the further cylindrical body of the outer eyelets are accommodatable in the open spaces of the center eyelet, with accommodation of their respective shanks in the axial hole of said center eyelet, in such a way that the cam surfaces of the central body interlock with the cam surfaces of the mutually opposite outer eyelets, thus determining an aligned arrangement thereof which can be made to rotate in a perpendicular arrangement.

19 . The hinge with circular cam eyelets according to claim 17 , wherein a metallic temple, to be associated with the outer eyelets of the hinge block, has a pair of tines with respective head hooks preceded by notches, having a thickness and dimensions that are adapted to be accommodated in the slits of said eyelets.

20 . The hinge with circular cam eyelets according to claim 14 , wherein a lug or end piece of the front has a pair of tines thereof which is preceded by a pair of notches, having a thickness and dimensions that are adapted to be accommodated in the upper and lower slits of the center eyelet of the hinge block.

21 . The hinge with circular cam eyelets according to claim 19 , wherein, with a slight pressure on the temple, once associated with its eyelets, a sliding is caused between their inclined surfaces and the reciprocal cam surfaces of the middle eyelet, said sliding determining an axial translational movement of said eyelets, such translational movement making it possible to obtain an opening and closing click of the temple, by virtue of the pressure exerted by their tines on the outer eyelets during the axial translational movement.

22 . The hinge with circular cam eyelets according to claim 12 , wherein a center eyelet has a cylindrical part with a gutter-like wall, with an axial hole and with mutually opposite surfaces with cam heads, where a side body is provided with a slit into which slot open ends of a lug of the front of an eyeglass frame are inserted, said open ends being provided with respective head hooks and with adjacent dips, which can be locked in place, by way of pressure inside the space, by a grub screw screwed into a threaded seat that is integral with the lug.

Assignees

• Luxottica Srl

Inventors

• Marcoiu Minhea Cezar

Classifications

• G02C2200/12

  Frame or frame portions made from sheet type material · CPC title

• G02C5/146

  having special front end · CPC title

• G02C2200/06

  Locking elements · CPC title

• G02C5/10

  Intermediate bars or bars between bridge and side-members · CPC title

• G02C2200/04

  Junctions between frame elements having a click function · CPC title