ITTV960069A1 - MECHANISM FOR GLASSES HINGES WITH AXIAL ROTATION OF THE ROD AUTOMATIC RETURN AND EXTRA-OPENING. - Google Patents

Description

DESCRIPTION OF INDUSTRIAL INVENTION

Title: mechanism for hinges of glasses with axial rotation of the rod, automatic return and extra-opening.

With the mechanism covered by this patent, the aim was mainly to satisfy the need to wear the glasses more easily and to improve their adherence to the user's head.

In the design phase of this mechanism, the following were taken into consideration: the small size, the best position and, last but not least, the aesthetic aspect.

In detail, the joint has the following functions:

- allow the assembly of an elastic rod to any nose available on the market with simple aesthetic adjustments of the spoon;

be of such shape as to appear to be part of the auction itself and camouflage any type of mechanism;

allow the opening and closing of the auction;

facilitate the wearing of the glasses thanks to the further opening of the rod towards the outside from 0 ° to 30 ° degrees and the subsequent return to the opening position automatically;

create an automatic return of the rod to the closed position during closing and to the open position during opening;

improve the anchoring of the eyewear to any wearer through the automatic axial rotation of the temples, thus making the terminals adhere behind the ears, thus obviating the manual adjustment required until now.

- do not exert excessive pressure on the tip of the terminal which could be annoying to the wearer;

Description of the mechanical parts

The necessary pieces and related graphic representations are; female hinge with squared cams, stem, spoon, box, end-of-stroke screw for axial rotation, spring, end-of-stroke tube for the extra opening and locking nut.

Female hinge with squared cams

The squared cam hinge has the particularity of being chamfered in two directions perpendicular to the opening and closing positions of the rod, to create the automatic return of the rod in the aforementioned positions.

Stem

The stem has the function of waxing the temple to the glasses to guide the compression and torsion springs, allowing the rod to open and rotate on the axis; itself, anchor the nut with the thread.

To guide the spoon only longitudinally thanks to its central square section thus not allowing any rotation with respect to the female hinge.

Table spoon

The spoon has multiple functions and precisely:

- connect the aesthetic shape of any nose to the box, harmonizing it with the shaft;

- return and keep the rod in the closed or open position thanks to its shaping which in these positions, coinciding with the two chamfers of the hinge, reduce the compression of the spring to a minimum;

- while wearing the glasses, while the rod is further opened, it must allow the compression of the spring which will subsequently automatically return the rod to the open position;

- slide along the axis of the stem guided by its central hole which, being a square section, prevents its rotation;

- allow the locking of the spring in torsion with the hole;

- be a support base for the compression spring,

- allow the fixing of the limit switch screw;

- guide the rotation of the box.

Box

The box has the following functions:

- contain and protect most of the mechanism from dust or hair hooking;

- define the end of stroke of the axial rotation through the guide slot;

- to allow longitudinal movement of the nut inside the hexagonal seat at the bottom of the box itself;

- allow the rod to be fixed in any way and point.

Limit screw

The end-of-stroke screw blocks the exit of the mechanism from the box and at the same time defines the axial rotation of the terminal.

Spring

The spring has the following functions:

- return and keep the rod in the closed or open position;

- return the auction to the open position after extra opening;

- keep the terminal closed and adherent to the wearer's head by working in torsion.

It is anchored by inserting its ends all the way

place one on the spoon and one on the nut.

Two springs will be produced for each eyewear and precisely one for the right terminal, one for the left terminal with distinct and opposite screwing.

Limit stop tube

The end-of-stroke tube defines the angle of the extra opening by blocking the approach of the nut to the spoon by being inserted on the stem and touching the spoon and nut.

Nut

The nut has the following functions:

- block the extra opening by leaning on the tube;

- guide the movement of the stem on the axis of the rod;

- be a support base for the compression of the spring;

- anchor the spring for axial torsion through a hole.

- transmit the torsion of the spring inserted in its anchoring hole to the box and consequently to the rod.

Dynamics of movements

In order to simplify the description of the movements of the various pieces, the positions and actions in the most significant angles of the temple with respect to the glasses are listed below:

(opening and closing of the auctions)

- 0 ° (figure 1 on page 1) (closed position) the flat face inside the spoon coincides with the first bevel of the hinge and is kept in this position by the spring which is at the minimum of compression;

- 30 ° the flat face inside the spoon pushed by the greater compression of the spring tends to close the rod towards the 0 ° position;

- 60 ° the flat face inside the spoon pushed by the greater compression of the spring tends to open the rod towards the 90 ° position;

- 90 ° (figure 2 on page 1) (opening position) the flat face inside the spoon coincides with the second chamfer of the hinge and is kept in this position by the spring which is at the minimum of compression;

- 120 ° (figure 3 on page 1) (position of maximum opening for wearing) during the further opening of the shaft, the spoon, resting its tip on the nose tooth, slides along the stem inside the box, compressing and loading the spring. The rod stops at the maximum opening of 120 ° when the tube strikes between the nut and the spoon and it is in this position that the spring is in maximum compression. Then when the rod is released it automatically returns to the opening position, that is, 90 ° by releasing the spring.

(Axial rotation)

- 0 ° (closed position) this position is maintained during the non-use of the glasses. The spring tends to close the terminal which in turn is blocked in this angle by the locking and end-of-stroke screw;

- 40 ° (maximum opening position) this position is reached only while wearing the glasses. The spring in this position reaches the maximum axial tension and tends to close the terminal again. The further opening is blocked in this corner by the locking and end-of-stroke screw which rests on the end of the guide slot of the box;

- 20 ° / 25 ° (intermediate position) during wearing, the spring rotates the terminal and keeps it adherent to the wearer's skin in order to block but without compressing the glasses to the head.

Claims (1)

Claims 1 - The whole mechanism. 2 - Any modification of the dimensions of the elastic joint. 3 - All shapes and all sizes of the spoon. 4 - All shapes and sizes of the box. 5 - All shapes and sizes of the stem. 6 - The extra opening locking system with the insertion of the tube between nut and spoon. 7 - 11 spring assembly and anchoring system by inserting its two ends inside two holes of any depth, one on the spoon and the other on the nut. 8 - All positions for fixing the rod to the box: on the end or on the side; 9 - All methods of fixing the rod to the mechanism: screwing, welding, melting * of the mechanism in any material, etc .; 10 - The locking and end-of-stroke screw that crosses the box and is screwed onto the spoon prevents the entire mechanism from coming out of the box; 11 - The possibility of the mechanism to be welded to any metal rod; 12 - The possibility of the mechanism to be screwed to any acetate rod; 13- Stem guide system with screwing of a nut of any shape: hexagonal, square, oval, with various guides etc. with relative female in the box; 14- The spoon and the stem are anchored to the nose without any possibility of axial rotation as opposed to the box which can rotate axially around the spoon and the stem; 15- The final thread of the stem which, in addition to having the function of supporting screwed on itself, is also the axial rotation point of the mechanism; 16- The seat obtained on the bottom of the box that allows the locking of the nut to the box rotation (allowing only the rotation together with the box and therefore with the entire shaft of the glasses) leaving the possibility to the stem screwed to the nut to slide forward and backwards allowing the compression of the spring making the rod flexible; 17- The entire mechanism develops uniformly around a single axis which is also the axis of axial rotation; 18- The use of the spring both in compression (longitudinally) and in torsion (axially).