WO1999067675A1 - Monture de lunettes, et procede pour inserer un verre dans cette monture - Google Patents

Monture de lunettes, et procede pour inserer un verre dans cette monture Download PDF

Info

Publication number
WO1999067675A1
WO1999067675A1 PCT/DK1999/000334 DK9900334W WO9967675A1 WO 1999067675 A1 WO1999067675 A1 WO 1999067675A1 DK 9900334 W DK9900334 W DK 9900334W WO 9967675 A1 WO9967675 A1 WO 9967675A1
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WO
WIPO (PCT)
Prior art keywords
rim
glass
eyeglass
state
groove
Prior art date
Application number
PCT/DK1999/000334
Other languages
English (en)
Inventor
Poul-Jørn LINDBERG
Henrik Lindberg
Original Assignee
Lindberg A/S
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 Lindberg A/S filed Critical Lindberg A/S
Priority to AU44983/99A priority Critical patent/AU4498399A/en
Publication of WO1999067675A1 publication Critical patent/WO1999067675A1/fr

Links

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
    • G02C1/04—Bridge or browbar secured to or integral with partial rims, e.g. with partially-flexible rim for holding lens

Definitions

  • the present invention relates to a method for the fitting of a glass in an eyeglass frame, an eyeglass frame, and an eyeglass.
  • the invention relates to methods of fitting or removing a glass from an eyeglass frame, which frame is adapted for retaining the glass by means of engaging a peripheral groove thereof by a rim. Still more specifically the invention relates to eyeglass frames wherein the rims engaging the glasses are slit in order to permit the insertion or the removal of the glasses.
  • the term eyeglass relates to the well known accessory which substantially comprises two lenses of glass or of other refractive or tinted, transparent material intended to be worn in front of the eyes of the user enabling him to obtain a corrected or a darkened view through the glasses, and a form of spectacle frame arranged to keep the lenses or glasses expediently fixed in the preferred position of use, wherein the wearer can look straight forward with both eyes and with parallel lines of vision through the respective lenses.
  • US patent 5 325 132 describes an eyeglass frame with split rims for engaging the glasses, wherein the split rims are closed by respective connecting devices, which connecting devices are spring loaded and adapted for being turned between an unlocked and a locked position in order to selectively close the rim.
  • the connecting mechanism comprises a number of small parts, which require complicated manufacturing and assembly. The mechanism is likely to create a somewhat bulky appearance which may by some users be considered undesirable. Insertion or removal of a glass requires the use of handtools .
  • US patent 3 905 085 describes an eyeglass with split rims wherein the split rims are secured by a screw which holds together a pair of lugs riveted to respective ends of the rim. This solution involves several small parts which are somewhat complicated in maufacturing and assembly and which may detract from the visual appearance of the eyeglass. Insertion or removal of a glass requires the use of handtools.
  • US patent 5 135 296 describes an eyeglass wherein each of the glasses is provided with a peripheral groove in the edge, and wherein each of the rims of the frame comprises two sections of wire received in the groove and shaped for peripherally engaging the glass.
  • the wire has angled parts which provide a means for allowing resilient dilatation of the rim. Removal of a glass may be effected by forcing a thin length of tape between the glass and the wire and pulling the wire by means of the tape against resilient tension and away from the groove. Once the glass becomes disengaged, the two wire sections fall apart .
  • each of the rims comprises a combination of an element cut from a sheet of plate and a section of wire.
  • the wire is secured in both ends to the plate element and the wire includes bent portions which serve the purpose of allowing resilience in tensioning the rim around the glass. Dismantling of the glass requires the use of handtools.
  • each rim comprises an element cut from a single sheet of plate.
  • the rim is slit and provided with hook means which may be opened for the purpose of inserting a glass and which may be closed.
  • the rim includes resilient means in order to provide resilient tensioning of the rim and in order to facilitate separating the hook elements.
  • the resilient means comprises bent portions of the hooks and/or a resilient element interposed between the glass and the rim.
  • the invention in a first aspect, provides a method as recited in claim 1.
  • an eyeglass may be fitted in an eyeglass frame by simple manipulations which do not require the use of any kind of tools. Also, dismantling of the glass may be performed without the use of any tools by following the same sequence of steps in reverse order.
  • the method does not require providing the eyeglass frame with any kind of parts which may become loose, e.g. on dismantling the glass.
  • the step of displacing one of the rim ends involves mutual sliding of interacting parts of the hook means in that at least one of the parts provides a slide bar which extends generally perpendicular to a tangent to the glass groove adjacent the slide bar.
  • the tangent to the glass groove generally signifies the direction of the forces prevailing on the hook means when engaged so as to tension the rim around the glass.
  • the recitation of the slide bar extending generally perpendicular to the tangent signifies that the slide bar is included in a plane which is generally perpendicular to the tangent. Generally perpendicular signifies that the plane is either perpendicular to the tangent or close to perpendicular to the tangent.
  • any deviation from the perpendicular direction should be suitably small in order that the friction forces between the interacting hook means will be able to resist any biasing forces tending to displace the hook means due to angular deviations under the influence of peripheral tensioning forces in the rim. This implies that the rim, following selective dilatation, will remain in a slack state. Thus, the operator can concentrate on inserting or dismantling a glass.
  • the invention in a second aspect, provides an eyeglass frame as recited in claim 4.
  • This eyeglass frame offers easy fitting and easy dismantling of the glasses without necessitating any use of handtools.
  • the eyeglass frame does not need to include any kind of parts likely to go loose, e.g. on dismantling the glass.
  • the slide bar is oriented at an angle which deviates slightly from the direction perpendicular to a tangent so as to bias the hook means toward a condition of engagement, where the rim is in a taut state.
  • This bias ensures that in case tension forces would overcome the friction, the hook means would tend to the condition of taut engagement.
  • the bias would normally not overcome the friction in order to facilitate manipulations during fitting of glasses.
  • At least one of the rim ends comprises a resilient wire section which extends integrally through a bend into a transverse leg, which leg provides part of the hook means and of said resilient tension means.
  • the transverse leg may preferably provide an arm adapted for holding a nose pad.
  • the remaining portion of the rim may comprise an integral extension of the same wire segment, or it may comprise an element cut from a sheet of plate, e.g. as illustrated in the above mentioned publication WO 99/21047.
  • the respective part of the hook means may comprise a bore or a hook formed e.g. by cutting the sheet to suitable shape, possibly combined with a bending operation.
  • Interconnection between the wire and the plate element may be implemented by any method known in the art.
  • Implementation of the nose pad may similarly be performed by any method known in the art.
  • One method which combines well with the invention is covered in an international patent application, publication No. WO 98/26324.
  • the rim may include resilient means for resiliently tensioning the rim around the glass as known in the art.
  • the wire section comprises a section adjacent the bend which is joggled so as to clear the groove of the glass. Adapting a section of the wire adjacent the hook means so as to disengage the groove of the glass facilitates manipulations for fitting or for dismantling the glass, and avoids any risk that the displacement of a part of the wire adjacent the hook means would damage the sides in the glass groove.
  • the hook means comprise engagement parts which have been trimmed or chamfered in order to control friction on mutual sliding.
  • the trimming or the chamfer also ensures that displacement will take place without undue wear of the interacting parts of the hook means.
  • the invention in a third aspect provides an eyeglass as recited in claim 15.
  • This eyeglass provides the advantages enumerated above in the context of the eyeglas frame.
  • Fig. 1 shows an elevation viewed from the rear of an eyeglass frame according to a first embodiment of the invention and in partial view
  • Fig. 2 is a view similar to Fig. 1 showing an eyeglass frame according to a second embodiment of the invention
  • Fig. 3 shows a detail in section by the line A-A on Fig. 1
  • Fig. 4 shows another detail from Fig. 1 in section by the line B-B.
  • Fig. 1 illustrates a general partial view of an eyeglass frame according to the first embodiment of the invention.
  • the viewing direction in Fig. 1 is from the rear, i.e. looking at the side of the frame which would normally face the wearer.
  • the eyeglass frame designated by reference 2 comprises a front 3, a temple 4, a nose pad 5, and an arm 23 for holding the nose pad.
  • the eyeglas frame 2 together with a pair of glasses (shown in Figs. 3 and 4) make up an eyeglass 1.
  • the front 3 comprises two components, viz. a first component cut from a sheet in order to provide an upper portion of the rim 8, and a second component comprising a section of wire 22 which provides the lower part of the rim around the glass.
  • the sheet rim 8 comprises a rib 12 adapted for engaging a peripheral groove of the glass.
  • the rib 12 may comprise an integral edge portion of the rim 8.
  • the plate component is preferably manufactured by cutting a sheet of plate.
  • Various materials and various designs may be used.
  • a variety of methods for the cutting may be used, e.g. laser cutting, stamping, shearing, water jet cutting, etc.
  • Other equivalent methods comprise casting or forging operations and combinations of operations, e.g. manufacturing the frame in various parts and subsequently assembling those parts, e.g. by welding or soldering.
  • a sheet plate of titanium to a gauge of 0.7 mm cut by a programmed laser cutting method has ben tested with good results.
  • the front 3 further comprises nose bridge 13 and front end piece 15 which provides a base for the hinge which secures the temple 4.
  • the wire section component 22 comprises to one end, i.e. the end to the right in Fig. 1, a bend which provides a hook 25 and in the opposite end, i.e. the end shown to the left in Fig. 1, a section which has been bent to provide a transverse leg 23.
  • the plate rim 8 adjacent the front end portion 15 comprises a narrow tongue which has been cut and bent to provide an eyelet or a socket 16 adapted for receiving the hook 25 of the wire.
  • Various materials and various gauges of wire may be used. A piece of titanium wire with a cross section of 0.7 mm has been tested with good results.
  • the plate rim 8 in the portion adjacent the nose bridge 13 comprises a bore 18 which receives the transverse leg 23 of the wire.
  • the transverse leg 23 of the wire extends into a bight which provides an eyelet 24 adapted for holding a nose pad 5.
  • the nose pad comprises a transparent silicone rubber material and therefore leaves the eyelet visible in Fig. 1.
  • the transverse leg 23 and the nose pad 4 together provide nose support 14.
  • FIG. 2 depicts a part of an eyeglass frame according to a second embodiment of the invention.
  • the eyeglass frame 20 according to the second embodiment is distinguished by having in the region adjacent the nose bridge 13 a catch 21 provided by a notch in an end of the rim and adapted for engaging the transverse leg 23 of the wire.
  • the catch 21 performs a function similar to the function of bore 18 in case of the eyeglass frame according to the first embodiment.
  • FIG. 3 illustrates a detail of the eyeglass frame according to the first embodiment which clarifies the interaction between the rim components.
  • Fig. 3 illustrates a portion of the plate rim 8 which provides a first rim end 9 of the split rim in section.
  • the section shown in the figure includes the rim bore 18.
  • the bore 18 is chamfered to the right in Fig. 3 by bevel 19.
  • Fig. 3 also illustrates the glass 6 which has been notched by a peripheral groove 7 adapted for cooperation with the plate rim 8.
  • the bevel shown in Fig. 3 is to the side of the rim which faces the wearer during use. This implies that the bevel is invisible from the front and therefore will not disturb the appearance of the eyeglass frame. This makes it feasible to provide the bevel by machining subsequent to providing a colour finish of the frame. However, this does not exclude other embodiments wherein the bevel is on the front side or possibly on both sides of the rim.
  • Fig. 3 also illustrates part of the wire 22 which engages the groove in the glass.
  • the part visible in Fig. 3 is generally referred to as the second end 10 of the split rim.
  • the demarcation between the first and the second end of the rim is designated by reference 11 (refer Fig. 1) .
  • Fig. 3 illustrates how part of the wire enters the groove 7 of the glass and how the wire at a place adjacent the plate rim is joggled at a point designated by reference 17. This joggle lifts the wire away from the groove as may be understood by reference to Fig. 1 and the joggle also shifts part of the wire laterally as illustrated in Fig. 3.
  • the joggled portion of the wire extends adjacent the front face of the plate rim to the bend.
  • the bend provides the transverse leg 23 which is threaded through the bore 18 to extend to the other side into the bight providing the eyelet 24.
  • the eyelet secures the nose pad (refer Fig. 1) .
  • the nose pad may be designed and secured by the procedures shown in the publication WO 98/26324. Any other type of nose pad and any other method of fitting known in the art may also be used.
  • Fig. 3 illustrates how the transverse leg 23 has been bent through somewhat more than 90° relative to the tangent 26 in the groove at a place generally adjacent the transverse leg 23.
  • Fig. 4 for a description of the joining of the wire section and the plate rim section in the part of the rim adjacent the temple.
  • a narrow tongue has been cut in the sheet specimen integral with the plate rim 8 and this tongue has been curved to provide an eyelet 16.
  • the adjacent end of the wire 22 is threaded through this eyelet and the end of the wire has been bent to provide a hook 25 which engages the eyelet 16 (refer also to Fig. 1) .
  • the hook 25 provided by a bend of the wire and the lateral leg of the other end of the wire section explained with reference to Fig. 3 allow some resilient deflection and thus provides a means for resilient expansion of the rim in peripheral direction even in taut state of the rim.
  • This resilience allows some latitude in the circumference of the groove while ensuring a good tight fit.
  • the resilience may e.g. allow for a tolerance of 0.5 mm peripherally which is sufficient in view of procedures normally used in the art for machining the groove in the glass since procedures commonly used allow accurate machining within a tolerance of 0.35 mm.
  • a procedure for dismantling of a glas will be explained with particular reference to Fig. 3.
  • the operator manipulates the transverse leg 23, e.g. by picking the nose pad, and pushing the transverse leg partially forwards through the bore 18.
  • An intermediate position during this displacement has been illustrated in phantom in Fig. 3.
  • the displacement of the lateral leg is generally possible within the limit set by the nose pad or the eyelet 24 engaging the glass or the plate rim.
  • Displacing the lateral leg forwards greatly enhances the flexing capability of the wire and thereby relieves the resilient tension in the rim. Dilatations in the order of several mm' s are easily achieved.
  • the rim is still resiliently tensioned in the slack state but to a much softer degree than in the taut state.
  • the operator may with his fingers lift the wire away from the glass groove, commencing with the section adjacent the joggle 17.
  • Fig. 3 also illustrates how the lateral leg of the wire is in the intermediate position of displacement still oriented generally perpendicular to the tangent 26 to the glass groove.
  • Friction between the cooperating surfaces, i.e. the side of the lateral leg of the wire, which effectively provides a slide bar, and the side of the bore ensures that these components are generally only displaced by operator manipulations and not by resilient forces.
  • the interface between the cooperation surfaces effectively provides the slit in the rim, i.e. the demarcation 11 between adjacent rim ends 9 and 10.
  • Fitting of the glass is performed by generally reversing the sequence of steps carried out for the dismantling.
  • the rim With the lateral leg shifted to slack condition, i.e. the nose pad approached to the plate rim, the rim is received in the glass groove generally commencing by the plate rim end 9 and working around the plate rim and the wire section.
  • the fitting procedure is completed by displacing the lateral leg 23 backwards, i.e. pulling the nose pad and the lateral leg rearwards relative to the plate rim.
  • the lateral leg 23 can be displaced to the right in Fig. 3 within the constraint of a part of the wire adjacent the bend engaging the front face of the plate rim.
  • the engagement may be tightened by forcing the lateral leg 23 into a slight plastic deformation so as to make the bend more acute.

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  • 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 de lunettes (2), dont le cercle (8, 22) est destiné à entrer en contact avec le renfoncement périphérique d'un verre. Ce cercle, sectionné au niveau d'une fente (11), est par ailleurs pourvu d'un raccord en forme de crochet (18, 23), destiné à relier les extrémités opposées du cercle au niveau de ladite fente, de sorte que ce cercle entoure la totalité du verre. Le cercle comporte également des élongations (23) permettant un allongement périphérique sélectif dudit cercle autour du verre, ce cercle pouvant ainsi passer d'un état détendu à un état tendu. Cette invention concerne également un procédé permettant d'insérer un verre dans une monture de lunettes.
PCT/DK1999/000334 1998-06-19 1999-06-18 Monture de lunettes, et procede pour inserer un verre dans cette monture WO1999067675A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44983/99A AU4498399A (en) 1998-06-19 1999-06-18 Eyeglass frame, and a method of fitting an eyeglass into it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA199800816 1998-06-19
DK81698A DK81698A (da) 1998-06-19 1998-06-19 Fremgangsmåde til montering af et brilleglas i et brillestel med delt rand, samt brillestel

Publications (1)

Publication Number Publication Date
WO1999067675A1 true WO1999067675A1 (fr) 1999-12-29

Family

ID=8097893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1999/000334 WO1999067675A1 (fr) 1998-06-19 1999-06-18 Monture de lunettes, et procede pour inserer un verre dans cette monture

Country Status (3)

Country Link
AU (1) AU4498399A (fr)
DK (1) DK81698A (fr)
WO (1) WO1999067675A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367426A1 (fr) * 2002-05-28 2003-12-03 Rodenstock GmbH Lunettes
FR2871246A1 (fr) * 2004-06-04 2005-12-09 Lunettes Folomi Soc Par Action Lunettes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685754A1 (fr) * 1994-05-30 1995-12-06 Kabushiki Kaisha Nakatani Paire de lunettes
EP0838710A2 (fr) * 1996-10-22 1998-04-29 Bottega D'arte In Firenze S.R.L. Monture de lunettes du type à fil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685754A1 (fr) * 1994-05-30 1995-12-06 Kabushiki Kaisha Nakatani Paire de lunettes
EP0838710A2 (fr) * 1996-10-22 1998-04-29 Bottega D'arte In Firenze S.R.L. Monture de lunettes du type à fil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367426A1 (fr) * 2002-05-28 2003-12-03 Rodenstock GmbH Lunettes
FR2871246A1 (fr) * 2004-06-04 2005-12-09 Lunettes Folomi Soc Par Action Lunettes

Also Published As

Publication number Publication date
DK81698A (da) 1999-12-20
AU4498399A (en) 2000-01-10

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