This invention relates to a spectacles frame fitted with a fixing device for the lenses in which the upper (ciliary) portion is made of metal or other rigid material, for example carbon fibre, while the lower portion of deformable plastic material.
On the market the so-called “Nylor” type glasses are well known and consist of a two-part frame in which the lenses are joined to the rigid, metallic top portion by a wire, preferably nylon, Kevlar or carbon, which is positioned inside a groove that is cut into the edge of the lens. Said wire thread therefore allows one to join and retain the lens to said upper (ciliary) portion. In particular, the wire is joined and locked to the rigid frame by inserting it into suitable pairs of holes made in the end portions of the rigid frame, generally made of titanium alloy.
Said “Nylor” eyewear of the state of art has some drawbacks since its manufacture is rather complex and expensive due to the need to carry out welding of the metal components and twisting of the internal end portions of the frame itself.
However, it is not easy to remove the lens from the fitting frame—nylon wire thread as it is necessary to exert a certain force by the user on the part so that the various operations turn out to be rather delicate and require a certain skill of the operator.
The subject of this invention is to obviate these drawbacks by providing a spectacles frame fitted with a system for hooking the lenses to the frame itself having the characteristics of the attached claim 1.
The invention will be better explained by the following description, in which the preferred embodiment of the invention is described, made with the aid of the attached Figures which respectively illustrate:
With reference to the aforementioned Figures, the spectacles frame, according to this invention, is of the two-piece type and is fitted with a device of coupling of a pair of lenses to the frame itself.
This frame comprises a rigid upper portion 1, made of metallic or otherwise rigid material, for example carbon fibre, and a lower portion 8 of plastic material or, in any case, heat deformable material.
The upper portion comprises two semi-oval arches A, joined by a bridge P, suitable for covering each at least partially a lens L.
The fixing device comprises, at both ends 1′, 1″, and 11′, 11″ of said arches an appendix 2, 2′ shaped like a “C” facing towards the same lenses. Preferably, the lower end portion of said “C” shaped part is slightly tilted upward to more securely retain the lenses once mounted as shown in
In an additional embodiment shown in
In yet another embodiment illustrated in
In a further form of embodiment (not shown), the appendices 2 at the lateral ends 1′ and 1″ may be of different useful conformation with respect to the appendices 2′ placed at the ends 11′ and 11″ of the central area.
The lower portion 8 presents, in a first embodiment (
In a second embodiment (
In all the embodiments indicated, both ends of the lower portion 8 of plastic or other deformable material are fitted with a hole 13, 13′ of rectangular shape or other convenient shape (
The lower portion 8, made of plastic or other deformable material, is heat-formed according to the shape of the lens to be mounted.
The assembly operation is quite simple since, after heating and locking the lens in the appropriate seat formed in the rigid upper portion 1 of the frame, it is sufficient to join the lower portion 8 by inserting the fixing appendix 2′ into the hole 13′ in a first end of the frame and, therefore, the appendix 2 in the hole 13 of the second end of the lower portion 8 of the frame to obtain a stable and secure constraint of the lens L.
In this way, assembly and disassembly operations are quite simple without the need to use screwdrivers or other tools.
The lenses, however, can be replaced not only with others of the same shape or size but also with lenses of other and different shape or size, by replacing only the lower portion with another of adequate length able to allow the attachment to the portion rigid upper 1 (
It should be noted, however, that the upper portion 1 of the frame in metallic material is obtained, for example, by using a laser cutting system and it is therefore possible to obtain two or more pieces of frame using a single sheet of metal (
In this way, it is possible to achieve significant savings in production costs while minimising material waste.
The frame, according to this invention, allows a simple assembly of the components and, in particular, of the lenses which can be easily replaced by interlocking and, therefore, without the use of screws or other fixing devices.
Number | Date | Country | Kind |
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102017000020206 | Feb 2017 | IT | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2018/000064 | 2/19/2018 | WO | 00 |