WO2008120245A1 - Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse - Google Patents

Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse Download PDF

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Publication number
WO2008120245A1
WO2008120245A1 PCT/IT2007/000177 IT2007000177W WO2008120245A1 WO 2008120245 A1 WO2008120245 A1 WO 2008120245A1 IT 2007000177 W IT2007000177 W IT 2007000177W WO 2008120245 A1 WO2008120245 A1 WO 2008120245A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
springs
tie
lug
rod
Prior art date
Application number
PCT/IT2007/000177
Other languages
English (en)
Inventor
Massimiliano Tabacchi
Original Assignee
SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A.
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 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. filed Critical SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A.
Priority to PCT/IT2007/000177 priority Critical patent/WO2008120245A1/fr
Publication of WO2008120245A1 publication Critical patent/WO2008120245A1/fr

Links

Classifications

    • 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
    • G02C5/22—Hinges
    • G02C5/2218—Resilient hinges
    • G02C5/2227—Resilient hinges comprising a fixed hinge member and a coil spring
    • 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
    • G02C5/22—Hinges
    • G02C5/2218—Resilient hinges
    • G02C5/2236—Resilient hinges comprising a sliding hinge member and a coil spring
    • G02C5/2245—Resilient hinges comprising a sliding hinge member and a coil spring comprising a sliding box containing a spring
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2200/00—Generic mechanical aspects applicable to one or more of the groups G02C1/00 - G02C5/00 and G02C9/00 - G02C13/00 and their subgroups
    • G02C2200/24—Coil spring pulled upon actuation

Definitions

  • the subject of the present invention is a frame for spectacles with arms that can be resiliently spread apart according to the preamble of main claim 1.
  • the invention is placed in the specific field of frames for spectacles equipped with systems for articulation of the arms by means of which the arms may be pivoted beyond the normal open position, though returned to that position when released.
  • each arm is provided with a pair of tie-rods and a pair of helical springs, each spring acting between the arm and one of the tie-rods.
  • Each spring further has a flattened configuration, in which the axes of the coils are inclined with respect to the longitudinal direction of the spring, there being thus identified a respective notional plane containing that direction and approximately oriented along the main surface of flattening of the spring.
  • the respective planes of flattening of the springs of each arm are parallel to and spaced from one another, and also extend perpendicularly to the hinge axis.
  • Frames of the aforesaid type normally provide front lens-holding mounts of large dimensions on which are articulated lugs for arms with consequently high arm heights (understood as the dimension of the arm cross-section measured parallel to the hinge axis of the arm), so as to impart suitable and notable appeal to the spectacles.
  • the primary aim of the present invention is that of providing a frame for spectacles with arms that can be resiliently spread apart which is structurally and functionally designed to remedy the aforesaid limitations, and in particular to obtain greater resilient strength in the arm, together with suitable robustness and durability of the hinge.
  • This aim and others identified hereinafter are achieved by the invention by means of a frame for spectacles which is produced according to the attached claims.
  • Figure 1 is a perspective view of a frame produced according to the present invention
  • Figure 2 is a partial plan view, on an enlarged scale, of a detail of the frame of Figure 1
  • Figure 3 is a partial view in side elevation of the detail of Figure
  • Figures 4 and 5 are views respectively in plan from above and in side elevation of a detail of Figure 2,
  • Figures 6 and 7 are views respectively in plan from above and in side elevation of a further detail of Figure 2,
  • Figure 8 is a plan view from above of a detail of Figure 2,
  • Figure 9 is a view in section along the line IX-IX of Figure 8
  • - Figure 10 is a plan view from above of a further detail of Figure 2
  • Figure 11 is a view in section along the line XI-XI of Figure 10
  • Figures 12 and 13 are views respectively in plan and in side elevation of a detail of the frame of Figure 1
  • - Figures 14 and 15 are perspective views of details of the frame of Figure 1.
  • the reference 1 indicates as a whole a frame for spectacles with arms that can be resiliently spread apart produced according to the present invention.
  • the frame 1 comprises arms 2 having a longitudinal axis X (understood as the longitudinal direction of the arm), articulated on respective lugs 3 of a front mount, indicated as a whole by 4.
  • a tie-rod member indicated by 5 is provided, hinged to the lug 3 via a threaded pin 6, about a hinge axis Y, substantially perpendicular to the direction of the axis X.
  • the tie-rod 5 is part of a respective device for resilient return of the arm, acting on the arm, and described in detail hereinafter.
  • the tie-rod 5 comprises a head 7 provided with a through-hole 8 for receiving the pin 6 and a stem 9 extending axially from the head 7.
  • the stem 9 has a rectangular cross-section and is slidably associated with the arm 2.
  • the lug 3 is provided with respective pairs of plate- like wings 3a, extending parallel to and spaced from the lug in order to receive between them the respective head 7. Said pairs of wings are provided with respective through-holes coaxial with one another and with the hole 8 in the head when hinged on the lug.
  • One of the holes may conveniently be threaded for the engagement by screwing of the threaded pin 6. Provision is made for the wings 3a to be obtained in one piece in the front mount 4 or, alternatively, to be part of a separate hinge member arranged to be fixed to the front mount.
  • the tie-rod 5 is extended in a plate-like portion 9a from which stand up in the same direction a pair of appendages 11, parallel and spaced and also conveniently configured as a pin, for coupling respective axial ends of a pair of helical springs, both indicated by 12, the opposite ends of which are secured to the arm 2.
  • the springs are preferably both structurally and functionally identical.
  • Each spring 12 is of helical type and extends in a respective prevalent longitudinal direction K', K" substantially parallel to the axis X.
  • Each spring 12 is preferably produced from metal wire and comprises a plurality of coils 12a which have respective coil axes parallel to one another, all indicated by L, and inclined with respect to the corresponding axis K', K", with an angle A being identified, contained between the directions K', K" and L As a result of that inclination, the coils 12a impart to each spring 12 a substantially flattened configuration overall, as can be seen from Figure 3, transversely to the corresponding direction K', K".
  • Each spring 12 therefore appears “squashed" in a predetermined lateral direction so as to assume, in that direction, a lesser transverse overall dimension, with respect to a conventional helical spring of equal wire diameter and equal diameter of the coils.
  • the directions K 1 and K" are parallel to and spaced from each other and the springs 12 assume their flattened configuration in the same common plane P of prevalent flattening, with the hinge axis Y directed substantially parallel to the common plane P of prevalent flattening.
  • Figure 15 clearly illustrates said configuration in which the springs 12 end up, in other words, "squashed" in the same common plane P of flattening and the hinge axis Y is directed parallel to that plane, thus rendering the springs approximately coplanar, as can be seen from the aforesaid figure, the squashing being therefore obtained in a direction transverse to the hinge axis, so as to reduce in that direction the overall lateral dimensions of the arm. direction.
  • provision is also made for the longitudinal directions K', K" of the springs to be directed parallel to the longitudinal direction of the arm, identified by the direction of the axis X of the drawings.
  • each spring 12 At the opposed axial ends of each spring 12, the corresponding coils are bent back to assume a configuration like an open eyelet portion 12b, capable of engaging in the respective coupling formations provided in the tie-rod (appendages 11) and in the arm.
  • the frame 1 further comprises, for each arm 2, a tubular casing, indicated by 13, in which the springs 12 and the tie-rod 5 are received, slidably guided in the inner cavity of the casing.
  • the casing 13 containing the respective springing device has a tubular configuration with substantially rectangular cross- section, of dimensions suitable to receive, with slight clearance, the springs 12 (alongside one another) having the flattened configuration described above.
  • each spring 12 furthest from the lug is coupled in a respective pin formation 15.
  • Said pin formations 15 stand up in the same direction from a base 16a of a support 16 arranged to be slidably received in the tubular cavity of the casing 13, and rigidly secured to same, in a preselected position during the assembly of the arm on the frame.
  • a threaded hole 17 is conveniently provided, passing through the base 16a of the support, for the engagement of a screw with which the support 16 is secured to the corresponding tubular casing 13. On this latter, a hole 17a is provided for the passage of the screw for clamping to the support.
  • the reference 18 indicates a stem-like portion protruding from the support 16 and arranged to be secured to an end part 19 of the arm, extending in axial extension of the casing 13, in the direction X, and capable of supporting the spectacles on the head in the region of the ears.
  • the portion 18, preferably in the shape of a pin, constitutes at least part of the core of the end part 19 of the arm 2 and may conveniently be covered at said end part by over-moulding.
  • the stem 9 of same is engaged such as to slide axially, in a guide member 20, removably secured to the casing 13.
  • Said member comprises a plate-like base 20a from which stand up in the same direction a pair of shoulders 21 in a spaced relationship, between which shoulders the stem 9 is slidably guided with slight transverse clearance.
  • the guide member 20 may be simply inserted into the casing 13 with a movable coupling (that is, not fixed in), since its position in the casing is constantly ensured by the pressure exerted on this latter by the surfaces of the lug.
  • the guide member 20 may be secured to the casing 13 via an interference coupling, by means of pressure engagement in the tubular cavity of the casing, at one of the axial ends of same, for the purpose of facilitating the operations of assembly of the arm, preventing the guide member 20, once inserted into the casing 13, from accidentally escaping therefrom before being secured to same.
  • the casing 13 further has a surface 23 capable of locating a corresponding abutment surface of the lug 3 and serves to locate this latter when the arm 2 is pivoted beyond the normal opening position.
  • the guide 20 is previously slidably coupled on the tie-rod, the springs 12 are coupled to the pins 11 of the tie-rod and to the pins 15 of the support, and the assembly consisting of these members is inserted into the tubular casing 13.
  • the springs 12 are then biased in elongation by means of axial displacement of the support 16 relative to the casing and subsequent mutual locking, by means of engagement by screwing a screw into the hole 17.
  • the support 16 is then secured to the end part of the arm.
  • the arm 2 complete with tie-rod, guide, pair of springs and support, is coupled to the front mount 4 by insertion of the hinge pin 6 in the devices for articulation of the arm.
  • the guide 20 is further rigidly connected to the tubular casing 13. In this state, the casing 13 is abutted against a locating means 5a of the tie-rod and the overall resilient bias induced in the springs imparts the resilient behaviour of the corresponding device.
  • the resilient return of the springs 12 to assume the initial length at rest is transferred into the hinge articulation and the arm is provided with the capability of spreading out resiliently beyond the normal opening position by rotating through an additional angle, the magnitude of which is determined by the relative axial travel between the guide member and the respective tie-rod towards an opposed raised portion 5b of the tie-rod which therefore functions as a limiter for the additional pivoting of the arm.
  • the arm 2 at the springing device has extremely small overall lateral dimensions, mainly linked to the squashed configuration of the springs 12 and to their substantially coplanar state.
  • the whole of the components of the resilient hinging device can be nested inside the tubular casing, thus limiting the external overall dimensions to the advantage of slenderness of the arm.
  • This property of greater robustness and durability of the resilient hinges therefore advantageously combines with a high degree of slenderness of the arm, in a direction transverse to the hinge axis, so as to make it possible to house the resilient device also in arms of spectacles of increased height (measured in the direction parallel to the hinge axis) but of small overall transverse dimensions (perpendicular to the hinge axis), a structure which distinguishes spectacle frames known to have a particular aesthetic appeal.
  • the invention thus achieves the aims proposed, obtaining the advantages claimed above compared with the known solutions.

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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 équipée de branches qui peuvent être écartées l'une de l'autre en souplesse qui comprend au moins un tenon (3) et au moins une branche (2) articulée sur le tenon, autour d'un axe d'articulation (Y), par l'intermédiaire de moyens à barre de fixation articulés sur le tenon et associés de façon coulissante à la branche, des moyens souples agissant entre la branche et les moyens à barre de fixation afin de pousser la branche en direction du tenon, les moyens souples comprenant, dans ladite au moins une branche, une paire de ressorts hélicoïdaux (12), chaque ressort agissant entre la branche et les moyens à barre de fixation, les ressorts s'allongeant tous les deux dans une direction longitudinale prévalente respective (K1, K') correspondant à la direction de l'application de la sollicitation élastique, les axes (L) des spires de chaque ressort étant inclinés par rapport à la direction longitudinale correspondante, de sorte à conférer aux ressorts une configuration pratiquement aplatie dans la direction transversale à la direction longitudinale, avec la définition, pour chaque ressort, d'un plan (P) d'aplatissement prévalent s'étendant pratiquement perpendiculairement au plan (Q) contenant les axes de spires (L) du ressort et à la direction longitudinale (K1, K'). Les directions longitudinales des ressorts sont parallèles les unes aux autres et espacées les unes des autres, les ressorts adoptent la configuration aplatie dans le même plan (P) commun d'aplatissement prévalent, et l'axe d'articulation (Y) est orienté parallèle au plan (P) commun d'aplatissement prévalent des ressorts.
PCT/IT2007/000177 2007-03-30 2007-03-30 Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse WO2008120245A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000177 WO2008120245A1 (fr) 2007-03-30 2007-03-30 Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000177 WO2008120245A1 (fr) 2007-03-30 2007-03-30 Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse

Publications (1)

Publication Number Publication Date
WO2008120245A1 true WO2008120245A1 (fr) 2008-10-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2007/000177 WO2008120245A1 (fr) 2007-03-30 2007-03-30 Monture de lunettes équipée de branches qui peuvent être écartées l'une de l'autre en souplesse

Country Status (1)

Country Link
WO (1) WO2008120245A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126898A1 (de) * 1971-05-29 1972-11-30 OBE-Werk Ohnmacht & Baumgärtner KG, 7536 Ispringen Federscharnier für Brillen
FR2366592A1 (fr) * 1976-10-02 1978-04-28 Armazones Manuf Charniere elastique pour lunettes
DE9002858U1 (de) * 1990-03-10 1991-07-11 Weber, Karl, 7000 Stuttgart Brillenbügel
EP1335236A1 (fr) * 2002-02-07 2003-08-13 Euro Vision Co., Ltd. Structure de branche de lunettes
WO2005111699A1 (fr) * 2004-05-14 2005-11-24 Redtenbacher Präzisionsteile Ges.m.b.H. Charniere a ressort pour une paire de lunettes
WO2006029776A1 (fr) * 2004-09-17 2006-03-23 OBE OHNMACHT & BAUMGäRTNER GMBH & CO. KG Charniere a ressort de lunettes
WO2006035461A1 (fr) * 2004-09-27 2006-04-06 Safilo Società Azionaria Fabbrica Italiana Lavorazione Occhiali S.P.A Monture de lunettes ayant des branches s'ouvrant par resilience

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126898A1 (de) * 1971-05-29 1972-11-30 OBE-Werk Ohnmacht & Baumgärtner KG, 7536 Ispringen Federscharnier für Brillen
FR2366592A1 (fr) * 1976-10-02 1978-04-28 Armazones Manuf Charniere elastique pour lunettes
DE9002858U1 (de) * 1990-03-10 1991-07-11 Weber, Karl, 7000 Stuttgart Brillenbügel
EP1335236A1 (fr) * 2002-02-07 2003-08-13 Euro Vision Co., Ltd. Structure de branche de lunettes
WO2005111699A1 (fr) * 2004-05-14 2005-11-24 Redtenbacher Präzisionsteile Ges.m.b.H. Charniere a ressort pour une paire de lunettes
WO2006029776A1 (fr) * 2004-09-17 2006-03-23 OBE OHNMACHT & BAUMGäRTNER GMBH & CO. KG Charniere a ressort de lunettes
WO2006035461A1 (fr) * 2004-09-27 2006-04-06 Safilo Società Azionaria Fabbrica Italiana Lavorazione Occhiali S.P.A Monture de lunettes ayant des branches s'ouvrant par resilience

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