DE3239700C2 - Rimless glasses - Google Patents

Abstract

The invention relates to rimless spectacles in which the corresponding spectacle parts are not fastened to the spectacle lenses by screw connections. The nasal bridge and the cheek parts have clasps which enclose the spectacle lenses on a short circumferential piece and which are fastened to the lenses by means of a tension wire or tension band which encompasses the lenses over their entire circumference.

Description

The invention relates to rimless glasses, according to the generic A's. d. H. on glasses where the temples and the nasal bridge are attached directly to the lenses; the bezels of the lenses and the usual support bars for these glasses parts are omitted. In such glasses it is common to use the temples and screw the nasal bridge to the glasses. For this purpose, holes are required in the glasses can also be carried out relatively easily with simple glasses. Expensive glasses, e.g. B. photochromic or bifocal glasses are very hard and therefore very difficult to pierce; in any case the danger is that the glasses break very large during the drilling process, a risk that the optician does not like to take would like to. This means that expensive glasses for use in rimless glasses are practically excluded.

A large number of suggestions for rimless glasses have now been made, but most of them are not get by without drilling.

It is a rimless pair of glasses from 1919 became known by US-PS 13 58 200, which also has a thread, but here wire to the glass is laid. But it is more of a pince-nez, even if glasses are listed as an example. The latter but can only be called a theoretical solution because it is not allowed. to the middle part of a pair of glasses, which is used to hold a cord or chain is designed. hang up two brackets and call this a spectacle frame. These hangers don't have any Stability.

The fastening of the wire ends is also known Glasses practically not possible. The wire is embedded in the glass and is supposed to be clamped by a screw become what must be seen as impracticable. Because there is a certain pressure to hold If a wire is needed, press the screw and the wire onto the glass, causing it to burst can be brought. From an objective point of view, there is therefore no technical possibility of converting a spectacle lens by means of a Wire according to the teaching of US-PS 13 58 200 actually to bring under tension and the wire ends to be stably connected to the glasses frame.

Other proposals are therefore a part of the fixed lens frame by a strap or a Replace tension wire. It has been known for a long time to design glasses frames so that an upper rigid support beam is provided for receiving serves as the upper glass surround; Tension straps or tension wires are placed around the lower edges of the glasses, their ends on the nose clip and on the jaw connections are attached in a suitable manner.

ίο Spectacle frames of such a design are for example in DE-ASs 11 08 942.10 47 476 described. All these known spectacle frames therefore have two different frames for the frame or holder of the glasses Components on: the rigid supporting beam for the upper part and the elastic band or wire for the lower part Edge of the glass (it can also be the other way around). This of course makes the overall impression of the Influences the glasses frame, and in any case you do not have the ideal rimless glasses, as is the case with glasses, in which the lenses are connected directly to the temples and the nose bridge through holes in the lens are. Here, too, the innovation provides a remedy without the need for drilling.

In the main patent 31 48 166 it is therefore proposed to completely enclose the spectacle lenses with a tensioning thread or tensioning strap and in d ^; e include bracing of mounting webs. to which the temples or the nose bridge are attached.

The glasses according to the main patent have inter alia. the advantage, that they can be easily adapted to the head or face shape of the glasses wearer by the jaw parts or the nasal bridge can be moved up or down by means of loops.

The present invention relates to an advantageous further development of the connection of the jaw part or nose bridge with the lenses b? w the tension wire.

The invention consists in that the clasps are designed as metal supports that <Le nasal metal support in a loop in the tensioning wire or the tensioning band and the thread or band ends are threaded freely in a loop each in the metal support on the cheek side, which are threaded with holes in correspond to the metal bars that are attached to the temple or the nose piece.

The invention has all the advantages of the main patency. However, the decisive advantage is that one Child size like an oversize can be made with the same parts: only the length of the Make the thread or tape of different lengths / u. This is possible because each end of the thread is clever fin-like through two holes each in the bracket-side Mc Tallauflage is pulled and the thread can be tensioned by simply pulling the two thread ends can. So there is no need for soldering or welding of the thread ends. The optician must therefore not like with conventional eyeglass frames keep a range of sizes in stock: he can make any desired shape or size from one set gen. where only the length of the tension thread varies the must.

The invention is explained with reference to the figure.
In the example described, for the sake of simplicity

b5 shown over only the right part of the glasses. To the Glass 1 attack the temples 2 and the nose bridge 3, and these have metal supports 4 and 5, which hold the glasses on a short piece as a

ge include.

The thread 6 is guided in the groove 7 of the glass 1 around the entire circumference of the glass. namely, the metal sheet 5 has a loop 10, while the metal sheet 4 is threaded twice into the thread 6 like a loop, as indicated by the reference numerals 8 and 9. The metal sheet A- thus has two pairs of holes. The thread ends are each pulled through a pair of holes; the thread 6 can be tensioned by tightening the thread ends. For the sake of clarity, the thread ends are brought out, which in the final state naturally lie between the metal support and the lens.

The metal supports 4 and 5 have threaded pins 11 on; on the temples 2 and the nose bridge 3 there are webs corresponding to the metal supports 4 and 5 12 and 13 provided, which have holes 14 through which the threaded pins 11 for the purpose of connecting of glasses temples and nasal bridge with the glasses passed through and screwed varden.

Since the Meiallauflage 4 and 5 before bracing sit loosely on the spectacle lenses 1, they can also be easily shifted in both directions on the circumference of the lenses with which a very simple adaptation of the glasses to the shape of the head is possible.

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Claims (1)

Claim: Rimless glasses in which the glasses are completely encompassed with a flexible tensioning thread or strap and in which the nose bridge and the cheek parts have clasps that serve as retaining webs for the lenses and which are attached to the lenses by means of the tensioning thread or strap, according to main patent 31 48 166. characterized in that the clasps are designed as metal supports (4, 5),
that the metal support (5) on the nose side in a loop (10) in the tensioning wire (6) or the tensioning strap and the thread or tape ends are threaded freely in a loop (8, 9) each in the metal support (4) on the jaw side, and that on the metal supports (4, 5) threaded pins (11) are provided with holes (14) in the Metal webs-i) (12, 13) correspond to the Eyeglass temples (2) or the nasal bridge (3) are attached.