WO2013098593A1 - Monture en bois pour lunettes et son procédé de fabrication - Google Patents

Monture en bois pour lunettes et son procédé de fabrication Download PDF

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Publication number
WO2013098593A1
WO2013098593A1 PCT/IB2011/056025 IB2011056025W WO2013098593A1 WO 2013098593 A1 WO2013098593 A1 WO 2013098593A1 IB 2011056025 W IB2011056025 W IB 2011056025W WO 2013098593 A1 WO2013098593 A1 WO 2013098593A1
Authority
WO
WIPO (PCT)
Prior art keywords
portions
hole
opening
frontpiece
opposite half
Prior art date
Application number
PCT/IB2011/056025
Other languages
English (en)
Inventor
Silvano MINELLI
Guido Medana
Original Assignee
31 FEBBRAIO S.r.l.
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 31 FEBBRAIO S.r.l. filed Critical 31 FEBBRAIO S.r.l.
Priority to PCT/IB2011/056025 priority Critical patent/WO2013098593A1/fr
Publication of WO2013098593A1 publication Critical patent/WO2013098593A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/06—Bridge or browbar secured to or integral with closed rigid rims for the lenses
    • G02C1/08—Bridge or browbar secured to or integral with closed rigid rims for the lenses the rims being tranversely split and provided with securing means
    • 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
    • G02C5/008—Spectacles frames characterized by their material, material structure and material properties
    • 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
    • G02C5/02—Bridges; Browbars; Intermediate bars

Definitions

  • the present invention concerns a method and system for the manufacturing and assembling of a frame for glasses, and in particular a wooden frame.
  • such operation consists in providing a sub- stantially radial cut or interruption on each circle, in particular at the level of the connection area of the temple bars, and in providing a joining element which then allows to close back clamp-like the open ends of the circle, after having mounted the lens.
  • said clamp-like mounting is achieved by using a screw, which couples with a female screw obtained directly in one of the two ends of the frame circle.
  • One of these inadequate materials is wood, which is not suitable for the manufacture of small threaded holes and with fine threading pitch.
  • the problem at the core of the invention is overcoming the above-cited disadvantage, supplying a technical solution of a tightening clamp which, on the one hand, improves the operating conditions of the screw, during the tightening operation and, on the other hand, guarantees a sufficient integrity of the threaded hole for the entire life span of the frame, even when it is made of a yielding material such as wood.
  • a manufacturing method of a wooden frame for glasses comprising the steps of
  • carving a wooden frontpiece comprising two lens-housing circles, providing opening/closing portions of the frontpiece whereon to arrange joining means comprising at least one screw, separate said opening/closing portions into two opposite half-portions to at least partly open said lens-housing circles, apply said joining means, wherein furthermore
  • At least one housing hole is practised which affects both said opposite half-portions of said opening/closing portions, and at least the hole of one of said opposite half-portions is equipped with an internally-threaded bush, which is part of said joining means, having a female screw for the engagement with said screw.
  • the internally-threaded bush is made of a strong material and is applied by cold joint or gluing.
  • the internally-threaded bush has a knurled or furrowed outer surface.
  • said internally-threaded bush is obtained by in situ casting of plastic material or of a material made of hardening resin and subsequently processed to obtain a female screw for the engagement of said screw.
  • the step of providing the hole of one of said opposite half-portions with a threaded bush is performed after said step of separating said opening/closing portions of the frontpiece into two opposite half-portions .
  • said step of equipping said hole with a threaded bush is performed before the step of separating said frontpiece opening/closing portions into two opposite half- portions, said separating action providing also the separation of said bush in a more internal portion provided with female thread and engaged with a one of said opposite half-portions and a more external portion with a through-hole and engaged with the other one of said opposite half-portions.
  • the frontpiece opening/closing portions consist of end pieces at the two outer sides of the two frontpiece circles, on said end pieces the temple bars of the frame being coupled.
  • the frontpiece opening/closing portions consist of a bridge connecting the two frontpiece circles, which is longitudinally separated from side to side.
  • a wooden frame for glasses is provided, manufactured with a method as described above.
  • the wooden material consists of a poplar or birch tree.
  • fig. 1 is a cross-section, according to a lying plane of a lens, of a frame shape according to the prior art, which may be used with rigid materials having suitable features of mechanical resistance;
  • fig. 2 is a cross-section fully similar to the one of fig. 1, concerning a first embodiment of a frame according to the in- vention;
  • figs. 3 to 5 are cross-sections fully similar to the one of fig. 1, concerning a second embodiment of a frame according to the invention, in subsequent processing steps.
  • Fig. 1 shows schematically a prior-art frame, for example a metal or strong, rigid, synthetic-material frame, of which only a circle 1 is shown, provided at an outer end with a stalk or endpiece 2 for the attachment of a temple bar (not shown) and, on the inner side, with an extension 3 forming a bridge for attaching a nose pad arrangement .
  • a prior-art frame for example a metal or strong, rigid, synthetic-material frame, of which only a circle 1 is shown, provided at an outer end with a stalk or endpiece 2 for the attachment of a temple bar (not shown) and, on the inner side, with an extension 3 forming a bridge for attaching a nose pad arrangement .
  • the frame circle is open along two abutment planes 4.
  • This opening determines two opposite ends 2a, 2b of the circle, which are mutually spaced apart and which can, with a slight bending of the circle, be spread apart to allow the introduction of the lens (not shown) into the housing groove (also not shown) in the circle, or be brought mutually closer and tightened one on the other in order to lock the lens in position.
  • a threaded hole 5 in end 2a there is formed a threaded hole 5 and in end 2b there is formed a hole 6, wide enough to allow the introduction, with slight play, of a tightening screw 7.
  • hole 6 widens into a counter-hole at the upper end thereof, suited to form a housing 6a for the head 7a of screw 7.
  • a frame 10 of wooden material (poplar and birch for example are particularly suited) is provided, equipped with two integral circles for the lenses, provided at the two outer ends with respective larger-thickness end pieces 20.
  • it is provided to open the circles of frame 1 in correspondence of the two end pieces 20, practising a cut which originates two opposite planes 24a and 24b.
  • it is provided to open the circle, typically mutually displacing axially offset the two ends 20a and 20b wherein end piece 20 remains separated.
  • the two planes 20a and 20ba are exposed and it is possible to access them with a suited tool.
  • the hole is preferably of a diameter larger by about 40%-50% with respect to the nominal diameter of the female thread, for example a hole ranging between about 1,8 mm and 2 , 2 mm.
  • Metal bush 28 is engaged.
  • Metal bush 28 is fastened in the hole by cold forcing or with the help of glue means or hardening resins.
  • it may be provided to introduce a bush having a knurled outer surface (in a radial or longitudinal direction) or more simply equipped with axial grooves, which simplifies all these fastening forms.
  • the fastening of bush 28 in the corresponding hole may be obtained by carrying out, on the outer surface thereof, a thread with a large pitch, such as "wood screw", for example ranging between 0,5 and 1 mm, the length of the bush permitting.
  • Bush 28 is in turn provided with a threaded inner hole, which defines the female thread which screw 27 is intended to engage with.
  • the bush is not separated and then applied, like metal bush 28, but is obtained by casting of a resin, or in general a high-resistance glue, directly in the hole of plane 20a. After the casting and hardening of this bush obtained in situ, it is provided to pierce the female thread directly with a threading tool (fine threading, suited to screw 27, which is borne well by the casting material), after having performed a hole of a suitable diameter.
  • a through-hole is pierced for the in- troduction of a screw 27.
  • the through-hole may provide an end counter-hole for the housing of the head of screw 27.
  • a smooth bush may be introduced for hole protection.
  • inven- tion (figs. 3 -5 ) , it is provided instead to practise a single perforation 20', in the end pieces 20, on the wooden frame with the circles of the lenses still integral.
  • a blind, single-diameter perforation 20' it is provided to introduce a single integral bush 21, provided with an inner hole which has a more internal threaded part 11a and a more external smooth part lib, in the proximity of the mouth of bush 21, having a larger inner diameter.
  • bush 21 is divided into two distinct parts, i.e. a threaded part 21a, which remains in the lower end 20a of end piece 20 of frame 1, and an unthreaded part 21b, but with a through-hole, which remains in the upper end 20b of end piece 20.
  • a threaded part 21a which remains in the lower end 20a of end piece 20 of frame 1
  • an unthreaded part 21b but with a through-hole, which remains in the upper end 20b of end piece 20.
  • the two circle por- tions thus separated, can be slightly spread apart to introduce the lens and then be mutually tightened with a screw 27.
  • This second embodiment is particularly advantageous because it simplifies mounting operations, it improves alignment preci- sion of the threaded hole for the introduction of screw 27 and it does not force to perform machining operations on the two portions of "open circle which are potentially risky for the integrity of the frame (especially if having a small thickness) .
  • the bush also in this case, may be obtained by casting of plastic material or made of resin directly in hole 20'.
  • a further embodiment provides to practise a single cut or opening of the circles of the lenses (instead of two separate ones as in the preceding embodiments) , in correspondence of the bridge portion 3 of the nose area.
  • a longitudinal cut is practised in the bridge portion, which cuts across it from side to side until it opens also the opposite circles. Since the cut or opening is only one on the frame frontpiece, it is sufficient to then mount a single threaded bush to introduce a single tightening screw; this does not prevent two bushes with corresponding tightening screws from also being provided, should other technical and/or aesthetic reasons exist which make it suitable.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

L'invention concerne une monture en bois pour lunettes et son procédé de fabrication, comprenant les étapes consistant à tailler une monture en bois, composée de deux cercles pour les verres, fournir des portions d'ouverture/fermeture de partie avant (3, 20), sur lesquelles placer des moyens de jonction comprenant au moins une vis (27), séparer lesdites portions d'ouverture/fermeture (3, 20) en deux demi portions opposées (20a, 20b) afin d'ouvrir au moins en partie lesdits cercles pour les verres, appliquer lesdits moyens de jonction et au moins un trou de logement affectant lesdites deux demi portions opposées (20a, 20b) desdites portions d'ouverture/fermeture (3, 20) étant percé et au moins le trou d'une desdites demi portions opposées (20a, 20b) étant équipé d'une douille filetée à l'intérieur (28, 21a), formant une partie desdits moyens de jonction, ayant un filetage femelle pour se mettre en prise avec ladite vis (27).
PCT/IB2011/056025 2011-12-30 2011-12-30 Monture en bois pour lunettes et son procédé de fabrication WO2013098593A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/056025 WO2013098593A1 (fr) 2011-12-30 2011-12-30 Monture en bois pour lunettes et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/056025 WO2013098593A1 (fr) 2011-12-30 2011-12-30 Monture en bois pour lunettes et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2013098593A1 true WO2013098593A1 (fr) 2013-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/056025 WO2013098593A1 (fr) 2011-12-30 2011-12-30 Monture en bois pour lunettes et son procédé de fabrication

Country Status (1)

Country Link
WO (1) WO2013098593A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2945007A1 (fr) * 2014-05-12 2015-11-18 Kingvisions Limited Monture de lunettes avec cerclage divisé en deux et écrou avec filetages intérieur et extérieur
WO2016095599A1 (fr) * 2014-12-18 2016-06-23 刘成岗 Lunettes et procédé de fabrication correspondant
TWI782729B (zh) * 2021-10-01 2022-11-01 國立臺北科技大學 複合材木質眼鏡製作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1001624A6 (fr) * 1988-05-03 1989-12-19 Gaspard Pol Une monture de lunettes fabriquee a partir de feuilles de bois et de feuilles de metal non-ferreux collees entre elles.
BE1005724A3 (fr) * 1992-03-27 1993-12-28 Pol Gaspard Procede de fabrication d'une monture de lunettes en bois, insert pour sa mise en oeuvre et monture obtenue selon ce procede.
WO2009127374A2 (fr) * 2008-04-15 2009-10-22 Fischerwerke Gmbh & Co. Kg Utilisation de résines définies lors de la fixation de vis, de moyens d'ancrage et similaires, procédé correspondant et résine synthétique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1001624A6 (fr) * 1988-05-03 1989-12-19 Gaspard Pol Une monture de lunettes fabriquee a partir de feuilles de bois et de feuilles de metal non-ferreux collees entre elles.
BE1005724A3 (fr) * 1992-03-27 1993-12-28 Pol Gaspard Procede de fabrication d'une monture de lunettes en bois, insert pour sa mise en oeuvre et monture obtenue selon ce procede.
WO2009127374A2 (fr) * 2008-04-15 2009-10-22 Fischerwerke Gmbh & Co. Kg Utilisation de résines définies lors de la fixation de vis, de moyens d'ancrage et similaires, procédé correspondant et résine synthétique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2945007A1 (fr) * 2014-05-12 2015-11-18 Kingvisions Limited Monture de lunettes avec cerclage divisé en deux et écrou avec filetages intérieur et extérieur
WO2016095599A1 (fr) * 2014-12-18 2016-06-23 刘成岗 Lunettes et procédé de fabrication correspondant
TWI782729B (zh) * 2021-10-01 2022-11-01 國立臺北科技大學 複合材木質眼鏡製作方法

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