EP1015238A1 - Procede de fabrication de montures de lunettes - Google Patents

Procede de fabrication de montures de lunettes

Info

Publication number
EP1015238A1
EP1015238A1 EP98952164A EP98952164A EP1015238A1 EP 1015238 A1 EP1015238 A1 EP 1015238A1 EP 98952164 A EP98952164 A EP 98952164A EP 98952164 A EP98952164 A EP 98952164A EP 1015238 A1 EP1015238 A1 EP 1015238A1
Authority
EP
European Patent Office
Prior art keywords
stamping
pair
eyes
eye
apertures
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98952164A
Other languages
German (de)
English (en)
Inventor
Luciano Simioni
Marco Damin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Killer Loop Eyewear SpA
Original Assignee
Killer Loop Eyewear SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Killer Loop Eyewear SpA filed Critical Killer Loop Eyewear SpA
Publication of EP1015238A1 publication Critical patent/EP1015238A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00—Producing frames
    • B29D12/02—Spectacle frames
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts

Definitions

  • the present invention generally relates to eyewear manufacturing. More
  • the present invention relates to a novel method of manufacturing eyewear
  • Eyewear frames including, e.g., spectacle frames, sunglass frames, and goggle frames
  • eyewear frames are made in many different styles using many different materials and manufacturing techniques.
  • metal frames are typically made by bending profiled wire into a pair of looped eyewires which extend around a respective lens and are
  • a bridge element interconnects the pair of eyewires and lenses to form the front frame. While this method is very common in the industry, there are limits as to the frame styles which may be achieved with this
  • a first horizontal cut divides the bridge into upper and lower halves 27,28 to form a horizontal gap 29 which allows the bridge to be expanded to insert the lenses into lens rim portions 12,13. (See Col. 3, Lns. 26-36 thereof).
  • a vertical cut is made in the lower segment 28 of the bridge to facilitate
  • Plastic eyewear frames are typically molded as a unitary piece, although some are cut and formed from a slab of thermoplastic material (see, e.g., U.S. Patent No.
  • the frame by stretching the eye openings to the point where the lenses can be "popped” into place. Stretching the frame is assisted with the application of heat which temporarily expands the plastic to allow insertion of the lenses. After the lenses are in place in the eye openings of the frame, the frame is allowed to cool whereupon the frame shrinks back to its pre-stretched shape, securing the frame around the lenses.
  • Still other eyewear frame styles include a combination of materials, including both plastic and metal in a single frame (see, e.g., U.S. Patent No. 4,707,089).
  • One presently popular eyewear frame style includes the provision of "side shields"
  • Side shields may be
  • finishing operations must typically occur, e.g., cutting away of excess material, which
  • the present invention successfully fills the above need by providing a novel method for manufacturing eyewear frames with integral side shields. More particularly, the inventive method basically comprises the steps of: a) providing a sheet of frame material;
  • the basic method outlined above forms a single "eye" in which a lens is secured.
  • stamping Two such eyes would be joined with a bridge element therebetween to form a basic frame front.
  • the provision of non-parallel opposite side edges in the stamping provides the ability to define a "side-shield" portion to the eye once the stamping is bent into the intended, looped configuration for holding a lens. Additional features may also be easily incorporated into the stamping which will form the eye, e.g., a nose rest or other features
  • An additional coining operation may be implemented to form the groove in the stamping wherein the edge of the lens would reside. This coining operation may be performed concurrently with or following the stamping operation. Additionally, multiple grooves may be formed to accommodate more than one lens in a single eye, if desired.
  • inventive method may be carried out on a variety of materials, including plastics, metals, and composites, and that the drawbacks associated
  • inventive method is very accommodating to other frame treatments.
  • aesthetic surface treatments may be easily formed in the sheet of frame material prior to stamping and forming.
  • apertures may be easily stamped
  • Figure 1 is a front, elevational view of an eyewear front employing the present method of
  • Figure 2 is a side, elevational view thereof
  • Figure 3 is a bottom, plan view thereof
  • Figure 4 is a top, plan view of a stamping according to the present method of manufacture
  • Figure 5 is a cross-sectional view taken along the line 5-5 in Fig. 4;
  • Figure 6 is a cross-sectional view taken along the line 6-6 in Fig. 4;
  • Figure 7 is a cross-sectional view taken along the line 7-7 in Fig. 4;
  • Figure 8 is a cross-sectional view taken along the line 8-8 in Fig. 4;
  • Figure 9 is a perspective view of an eyewear incorporating a pair of eyes manufactured according to the inventive method.
  • Figure 10a is a perspective view of a second embodiment of an eyewear which utilizes a removable, auxiliary side shield;
  • Figure 10b is a plan view of the stamping used to form the eyes of the frame of Fig. 10a;
  • Figure 11a is a perspective view of a front frame of a third embodiment of an eyewear
  • Figure 1 lb is a plan view of the stamping used to form the eyes of the frame of Fig. 1 la;
  • Figure 12a is a perspective view of a front frame and temple of a fourth embodiment of an
  • eyewear which incorporates a decorative surface treatment about the frame eyes
  • Figure 12 b is a plan view of the stamping used to form the eyes of the frame of Fig. 12a;
  • Figure 13a is a perspective view of an eyewear front frame of a fifth embodiment of an eyewear which incorporates a removable visor;
  • Figure 13b is a plan view of the stamping used to form the eyes of the frame of Fig. 13a;
  • Figure 14a is a perspective view of an eyewear front frame of a sixth embodiment of an eyewear which incorporates a pair of lenses in each eye of the frame;
  • Figure 14b is a plan view of the stamping used to form the eyes of the frame of Fig. 14a;
  • Figure 15a is a perspective view of an eyewear front frame of a seventh embodiment of an eyewear which incorporates a pair of brow bars in each eye of the frame;
  • Figure 15b is a plan view of the stamping used to form the eyes of the frame of Fig. 15a;
  • Figure 16a is a perspective view of an eyewear of an eighth embodiment of an eyewear which incorporates a temple hinge mechanism
  • Figure 16b is a plan view of the stamping used to form the eyes of Fig. 16a.
  • Figures 17a-17d are plan views of four different embodiments of a stamping.
  • FIGs. 1-3 an eyewear front frame 10
  • Eyes 12,14 have opposite inner and outer portions 12a, 12b and 14a, 14b,
  • bridge element 16 interconnecting eyes 12,14 at the inner portions 12a, 14a thereof.
  • Bridge element 16 may be secured to eyes 12,14 using any known means
  • the outer portions 12b, 14b of eyes 12,14 are of a
  • width Wi (as measured from front eye edges 12c, 14c to rear eye edges 12d,14d) which is larger than the corresponding width W 2 at the inner portions 12a, 14a, thereby forming what is known in the art as a "side shield".
  • Side shields are useful to reduce light entering from the lateral side edges of the wearer's head, and is also considered a decorative detail of the eyewear itself.
  • the present invention provides a method of manufacturing eyes 12,14 with integral side shields in a simple and cost-effective manner as discussed more
  • Figs. 4-8 show a planar stamping 20, a pair of which are used to form
  • stamping 20 is provided in sheet form which is cut with a die (not shown) to form a stamping 20.
  • the outline of the die replicates the outline of the stamping 20 as seen in the plan view of Fig. 4.
  • Stamping 20 thus includes opposite side edges which ultimately form the front and rear eye edges 12c, 14c and 12d,14d of eyes 12,14, respectively.
  • 20 further includes opposite end portions 20', 20" which are brought together when forming eyes 12,14 from a pair of stampings 20. As seen in Fig. 1, opposite end portions 20', 20" are secured together using a barrel and screw 22, although other attachment means may be used as desired.
  • lens-securing means other than a groove may be provided.
  • the front edge 12c, 14c of stamping 20 may be crimped to form a surface extending radially inwardly toward the center of the formed eye 12,14.
  • the lens would then be inserted into the eye from the back, and an adhesive and/or other securing elements (e.g., tabs) would be used to secure the lens edge to this surface.
  • stamping (which ultimately form the outer portions 12b, 14b of eyes 12,14), is preferably larger than the width Wi at the end portions 20',20" (which ultimately form the inner portions 12a, 14a of eyes 12,14), which creates the side shields at the outer portions 12b, 14b upon bending a pair of stampings 20 into eyes 12, 14, respectively.
  • the variation in width along the length of stamping 20 is seen clearly in the cross-sectional views of
  • the front edge 12c, 14 of stamping 20 curves in the same direction as the outer edge 12d,14d thereof, most notably at approximately the center of the stamping. This curving of the opposite side edges dictates the degree of "wrapping" the eye 12,14 will have when formed. The more extreme the bend, the more extreme the wrap of the ultimate eyewear frame 10.
  • Fig. 9 illustrates eyewear having the front frame 10 of Figs. 1-3 (lenses not shown in Figs. 9-16) with a pair of temples 26,28 pivotally connected to the outer portions 12b,14b of eyes 12,14, respectively.
  • Bridge element 16 interconnects eyes 12,14 at the inner portions 12a, 14a thereof, and a pair of nose rests 30a,30b are attached (e.g., by
  • auxiliary side shield 32 may be provided for removable attachment to the outer portions 12b, 14b of eyes 12,14.
  • Attachment means may easily provided in the form of one or more apertures 36 cut in stamping 20 (Fig. 10b). This cutting operation may take place at any time during the manufacture of
  • stamping 20 i.e., before, during or after either one or both of the stamping and coining
  • auxiliary side shield 32 in the form of flanged bosses 38 which are aligned with the locations of the apertures 36 in eyes 12,14.
  • Auxiliary side shield 32 has a forward portion 32', on which bosses 38 are formed, and a rear portion 32" which preferably flares outwardly with respect to forward portion 32'.
  • auxiliary side shield 32 pop into apertures 36 in eye 12,14. Once attached to eye 12,14, auxiliary side shield 32 provides an added degree of protection from light entering from the sides of the eyewear, in addition to providing another decorative detail to the overall appearance of the
  • a decorative roping may be applied to eyes 12, 14 by cutting a plurality of apertures 42 in spaced relation along the length of stamping 20, again at any desired step in the manufacturing process.
  • the roping 40 is threaded back and forth
  • stamping 20 may be provided with a decorative surface treatment 44. This may be easily done either prior to or after cutting of stamping 20.
  • a detachable visor 46 may be provided for removable attachment to eyes 12,14.
  • Attachment means may be provided, for example, by an
  • elongated aperture 48 cut in stamping 20 into which a flange 50 formed on the bottom surface of visor 46 may be inserted.
  • more than one groove 24a,24b may be provided in stamping 20 to accommodate more than one lens 16a, 16b (e.g., lenses having different
  • a pair of removable brow bars 52a, 15b may be provided
  • pivotal attachment means may be provided in the form of a pair of apertures 56a,56b formed in each stamping 20.
  • a pair of temples 58 are
  • each temple 58 is provided with a pair of bosses 60 located at the front end 58' of each temple 58, which
  • front end 58' is preferably somewhat flexible and curved outwardly as shown such that
  • bosses 60a,60b may be squeezed toward one another in the direction of the arrows, at which time the temple end 58' may be inserted into the eye 12,14 form the rear until bosses 60a,60b pop into apertures 56a,56b.
  • FIGS 17a-d illustrate four additional embodiments of stampings 200-204, respectively, each of which are of substantially the same outline as stamping 20, but each
  • Elements 203 ',204' are configured to provide integral nose rests once the stamping is bent into the finished eye. Since these elements are formed integrally with the stamping operation, it will be appreciated that the present method of manufacture allows for variations in frame design/features without the additional and expensive processing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un monoculaire (12,14) comportant un écran latéral entier, destiné à une monture de lunettes (10) obtenue à l'aide d'une paire de tels monoculaires, qui consiste à découper, à partir d'une feuille de matériau pour monture (pare exemple de métal, de plastique ou de composite), une ébauche à l'aide d'une matrice dont l'empreinte reproduit les contours de l'ébauche. L'empreinte présente des extrémités opposées qui s'étendent d'une façon non parallèle, incurvée afin de former une largeur maximale au voisinage de la partie centrale de l'ébauche. Dans une réalisation préférée, une opération d'emboutissage est effectuée sur l'ébauche afin de créer la gorge de réception du pourtour de la lentille. L'ébauche est courbée dans une configuration de boucle, la lentille étant insérée dans la gorge, les parties d'extrémités opposées de l'ébauche étant fixées ensemble.
EP98952164A 1998-07-24 1998-10-08 Procede de fabrication de montures de lunettes Withdrawn EP1015238A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI981727 1998-07-24
IT1998MI001727A IT1301869B1 (it) 1998-07-24 1998-07-24 Procedimento per la fabbricazione di montature per occhiali, inparticolare per la fabbricazione di un oculare per montature per
PCT/US1998/021225 WO2000005061A1 (fr) 1998-07-24 1998-10-08 Procede de fabrication de montures de lunettes

Publications (1)

Publication Number Publication Date
EP1015238A1 true EP1015238A1 (fr) 2000-07-05

Family

ID=11380520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98952164A Withdrawn EP1015238A1 (fr) 1998-07-24 1998-10-08 Procede de fabrication de montures de lunettes

Country Status (6)

Country Link
EP (1) EP1015238A1 (fr)
JP (1) JP2002521230A (fr)
AU (1) AU9792898A (fr)
CA (1) CA2277740A1 (fr)
IT (1) IT1301869B1 (fr)
WO (1) WO2000005061A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1752953A (en) * 1927-11-18 1930-04-01 Firm Theodor Kahne & Sohne Method of manufacturing spectacle frames from tortoise-shell and similar valuable material
US3621544A (en) * 1969-09-02 1971-11-23 Foster Grant Co Inc Method of manufacturing an eyeglass frame
IT956523B (it) * 1972-06-13 1973-10-10 Salottica Srl Metodo per la lavorazione di monta ture per occhiali
US4877320A (en) * 1988-10-03 1989-10-31 Holden W Bruce Eye-shielding glasses
US6082857A (en) * 1996-11-29 2000-07-04 Lockhart; Michael William Lightweight safety spectacles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0005061A1 *

Also Published As

Publication number Publication date
JP2002521230A (ja) 2002-07-16
AU9792898A (en) 2000-02-14
ITMI981727A1 (it) 2000-01-24
IT1301869B1 (it) 2000-07-07
ITMI981727A0 (it) 1998-07-24
CA2277740A1 (fr) 2000-01-24
WO2000005061A1 (fr) 2000-02-03

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