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
  • G02C5/2236—Resilient hinges comprising a sliding 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
  • 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
  • G02C2200/30—Piston

Definitions

• the present invention relates to a method of insertion and locking of at least two elastic mechanisms in a branch, including a branch for spectacle frames.
• the present invention is part of the current panorama of the world of glasses, helping to diversify the offer and create new technical and aesthetic opportunities.
• FIGS. 1A, 1B, 2A, 2B represent two known examples of spectacle frame branches at present marketed, of the type concerned by the invention.
• the branches are thin and are much wider than thick. They each comprise two longitudinal housings made in their thickness and opening at their proximal end (frame side).
• the branch 10 represented by a side view in FIG IA comprises two elastic mechanisms 11, each elastic mechanism 11 being inserted by mechanical forcing in a longitudinal housing 12.
• the mechanisms are seen from the side in Figure IA and one of these mechanisms 11 is also represented by a view from above in FIG. 1B.
• the branch 20 represented by a view from above in FIG. 2A also comprises two elastic mechanisms 21 (only one being visible), each elastic mechanism being inserted into a longitudinal housing 22 and held therein by a transverse screw 23.
• the screw 23 is prominent inside the branch.
• One of the mechanisms 22 is also shown in Figure 2B.
• the assembly technique shown in Figures IA, IB has the disadvantage of limiting the choice of materials used to achieve the branch. It forces, indeed, to remove hard and brittle materials or fragile materials. Moreover, we can not replace the mechanisms in case of malfunction.
• the assembly technique shown in Figures 2A, 2B also does not allow all materials to be used. Fragile materials, such as wood, for example, give no guarantee of resistance with the small side screw given the small thickness of the branch.
• an object of the present invention is to overcome the disadvantages of the known solutions mentioned above. More particularly, the present invention aims a method of insertion and locking of at least two elastic mechanisms in longitudinal housings made at one end and in the thickness of a branch, which offers the possibility of making the branches in various materials, as well as the possibility, in case of malfunction, to easily replace the damaged mechanism.
• a method comprising the steps of providing, on each elastic mechanism, an external thread, providing in each housing a thread corresponding to the external thread of the elastic mechanisms, and screw each elastic mechanism in a housing.
• the mechanisms each comprise a sliding rod in a central body, the external thread being made along the central body.
• the present invention also relates to an eyeglass frame branch comprising at least two longitudinal housings made at one end of the branch, and at least two elastic mechanisms arranged in the housings, characterized in that each elastic mechanism comprises an external thread cooperating with a thread of the housing in which it is arranged, and is screwed into it.
• each elastic mechanism comprises a sliding rod in a central body, the external thread of the mechanism extending along the central body.
• FIGS. 1A and 1B previously described, represent a first known type of eyeglass frame branch and elastic mechanism inserted in force in the branch
• 2A, 2B previously described represent a second known type of eyeglass frame limb and elastic mechanism inserted into the limb and held by a screw
• FIGS. 3A, 3B, 3C represent a spectacle frame branch according to FIG. invention, respectively by a side view in partial section, a side view without section and a view from above, and
• FIGS. 4A, 4B show two elastic mechanisms according to the invention, respectively at rest and in a stretched position.
• Figure 3A is a partial sectional side view of a spectacle frame leg according to the invention, which may be made in various materials and with the most known production techniques.
• the branch 30 comprises two longitudinal housings 31 each comprising a threaded zone 32 obtained by tapping, and adapted to receive elastic mechanisms 40 acting as male hinges.
• FIGS. 3B, 3C show the branch 30 in side view and seen in profile with the two elastic mechanisms 40 screwed into the housings 31.
• the mechanism 40 comprises a central body 41, a slide 42 and a coil spring 43.
• the central body 41 has an external thread, preferably over its entire length or almost.
• the slide 42 has a proximal end forming a male hinge and comprising an orifice for receiving a hinge axis, a central portion sliding in the threaded central body 41 (not visible in the figure), a rear part forming a rod around which is mounted the spring 43, and a distal bulge serving as a rear stop to the spring.
• the spring 43 is thus sandwiched between the rear stop and the threaded central body 41.
• the stretched position shown in FIG. 4B corresponds to a phase of passage from the branch of the folded state to the unfolded state or vice versa. , relative to a mount (not shown here).
• the proximal end of the slide 42 moves away from the threaded central body 41, while the distal bulge compresses the spring against the central body 41.
• the necessary mechanical machining step (orifice and threading) for making the housings in the branches can be inserted into the normal production process, with a low industrial cost, just like the manufacturing process of the threaded central body, which does not include no changes compared to the normal production method except the realization of the external thread, the existing standard equipment being usable.
• the thickness of the branch is of the order of 4.2 to 4.35 mm
• the width of the branch is 15 mm to 30 mm
• the drilling and the tapping of the housings receiving the elastic mechanisms are carried out on the finished branch.
• the branch is made for example in acetate.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=37081596

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (4)

• 2005
  • 2005-07-14 IT ITTV20050104 patent/ITTV20050104A1/it unknown
• 2006
  • 2006-07-12 EP EP06779903A patent/EP1960824A1/de not_active Withdrawn
  • 2006-07-12 WO PCT/IB2006/002056 patent/WO2007007186A1/fr active Application Filing

Non-Patent Citations (1)

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