DE20316953U1 - Spectacle frame without hinges has rigid frame sections bonded to an intermediate plastic layer with bend and stretch properties - Google Patents

Abstract

A spectacle frame without hinges has rigid metal parts bonded to each side of an elastic inner layer (4) which has bend and stretch properties. The bond covers the entire length of the metal sections. The hinge positions are defined by a break in the metal cladding, with a spacing (8) on one side of the frame, representing the inside of the hinge. The outer side of the hinge has a butting break (12) in the metal cladding allowing the inner layer to stretch as the hinge bends.

Description

The innovation concerns a jointless one Hinge, especially for Temples.

The two temple pieces one Glasses are usually with the rest of the glasses frame connected by means of a hinge or a hinge in such a way that the temple piece swung in and so that the glasses can be folded.

Furthermore, temple pieces are known which are made of highly elastic metal wire and without a hinge or joint executed are and where the pivoting of the bracket only by the highly elastic material is achieved.

The innovation's job is a hinge for a To propose eyeglass frame in which the eyeglass temples without Are articulated but have the function of a hinge, and the bracket made of strips or rods Material exists.

According to the innovation, this will achieves that a stripe-shaped, continuous material part made of two outer metal layers and one in between arranged stretchable or stretchable material part, e.g. made of plastic exists that has a hinge function when the glasses are folded in and its length variable is.

With the new arrangement it is achieved that the two temple pieces swiveled in without joints can be and a defined stop position when swiveled out in addition, that they have sufficient stability in any position and with the exception of the pivot point have a high rigidity.

The stretchable liner that takes over the hinge function, is with the two outer metal layers not solvable connected, e.g. bonded. The outer metal layers can be metallized, plated or the like Have a high rigidity compared to the middle layer. The stretchable material layer is over the entire length of the hinge section of the temple continuously and without Interruptions and without rotating parts trained and exists from a material that is sufficiently flexible and repeats and without fatigue can be returned to the stretched position, so the temple at the hinge point from the straight position to a pivoted position of 90 ° Position and back is bendable.

The two metal layers are made of, for example Aluminum, stainless steel, suitable metal alloys or the like. trained while the middle layer made of a fully resettable and stretchable plastic, Rubber, rubber-like or rubber-like material.

In a special embodiment the innovation is one, namely the outer metal layer severed or interrupted at the joint, while the opposite metal layer has a recess or a cutout, i.e. the two in stretched position of the temple a short distance from each other, the one in the opened position of the temple has maximum interrupting distance and in the unfolded state the two front edges of the metal layer with the eyeglass temple open the end faces abut each other and in this way a stop form with each other so that further opening of the bracket is prevented.

When unfolding the temple and the resulting pivoting move the two in the unfolded Condition of the end faces of the two metal sections in contact with one another of a bracket on the outside apart while on the inside of the temple the metal sections of the temple, which in the unfolded Are spaced apart, approach each other until they come into contact with each other. During this swivel movement the intermediate layer in the area of the joint in the longitudinal direction stretched, on the outside stronger than in the middle range while the inside of the liner at the joint due to the bend or pivoting about 90 ° slightly is compressed. The pivoting movement or the hinge function happens thus in the case of the arrangement according to the innovation exclusively in the material forming the liner, while the outer and inner metal layers Have separation points, which when pivoting the temple open more or less at these separation points.

The middle layer, made of rubber, Plastic or the like corresponding stretchable or stretchable material, can from a single or from several layers of different or the same materials exist to the extensibility or extensibility of the material, especially a high degree of sustainability Achieve property so that the function of a hinge also over a guaranteed for a long period is.

The innovation in Connection with the drawing explained using an exemplary embodiment. It shows:

1 2 shows a section through part of a spectacle temple at the joint point when the temple is open,

2 the in 1 shown section of the temple at the hinge with partially pivoted temple, and

3 a representation of the temple portion when fully pivoted position.

The temple 1 consists of an inner metal layer 2 , an outer metal layer 3 and a stretchable middle layer 4 which is made of plastic, rubber or the like. Sustainably stretchable material. The hinge point of the temple 1 is by the dash-dotted line 5 indicated. The at The outer layers or outer layers of the temple as a stabilizing component consist of the sections 6 and 7 which are spaced apart at the hinge point, this spacing in 1 With 8th is designated. On the opposite side of the temple is the metal layer or layer 3 from the individual sections 10 and 11 made that at the point 12 are severed so that they are at the hinge point 5 can separate from each other when folding.

The sections 6 and 7 the metal layer 2 are arranged to each other so that the end faces 13 and 14 a distance when opened or stretched 8th from each other while the sections 10 and 11 the opposite metal layer 3 have only a minimal distance from each other when folded due to the separation point, so that the two sections 10 and 11 can move apart when swung in.

The position of the metal layers on both sides of the middle layer is in the 2 and 3 shown schematically and not to scale. The stretch of the middle layer 4 in the area of the pivot point results from the distance between the end faces 14 and 15 of the metal sections 10 and 11 , so that when the temple is swung in, the material of the middle layer is stretched considerably 4 occurs.

Claims (8)

Hinge, in particular for eyeglass temples, characterized in that a strip-shaped continuous material part made of two metal layers and a stretchable or stretchable, fully resettable material part arranged between them, for. B. made of plastic, which is variable in length in loads. Hinge according to claim 1, characterized in that the Metal layers are not releasably connected to the stretchable intermediate layer are. Hinge according to claim 1 or 2, characterized in that the stretchable material layer over the entire length of the material part is designed to run continuously. Hinge according to one of claims 1-3, characterized in that that a section of the metal layer at the hinge point from the straight Position in a swiveled by 90 ° Position is foldable. Hinge according to one of claims 1-4, characterized in that that the two metal layers of aluminum, stainless steel, or suitable Metal alloys consists. Hinge according to one of claims 1-5, characterized in that that the middle layer of plastic, rubber, rubber-like or rubber-like materials. Hinge according to one of claims 1-6, characterized in that that the metal layer at the point where the joint is formed is, severed and interrupted, and that on the opposite Metal layer a recess or a cutout is formed so that the two metal sections are spaced from each other. Hinge according to one of claims 1-5, characterized in that that on the inside of the hinge the stretchable middle layer between the two spaced ends of the metal sections the inner metal layer is exposed while on the opposite side, namely the outside of the joint the metal layer is interrupted by a separation or interface is.