ZIP WITH PIVOTING COUPLING ELEMENTS

Abstract

The present invention describes a zip comprising a pair of webbings (29; 38), each of which has in its side edges sequences of coupling elements or teeth (5; 12) facing with respect to their sector of joining with the webbing, each of these coupling elements (5; 12), being able to pivot around its central vertical axis thanks to a support placed between the coupling element (5; 12) and the webbing (29; 38), wherein the coupling element (5; 12) engages with the support and the latter with the webbing (29; 38), characterised in that said support consists of a cylinder (30) or of two half-cylinders (18, 19) placed in a specular manner at the opposite sides of the webbing (29).

Description

Claims

1. A Zip comprising a pair of webbings (29; 38), each of which has on its side edges sequences of coupling elements or teeth (5; 12) facing with respect to their sector of joining with the webbing, each of these coupling elements (5; 12) being able to pivot around its central vertical axis thanks to a support, placed between the coupling element (5; 12) and the webbing (29; 38), wherein the coupling element (5; 12) engages with the support and the latter with the webbing (29; 38), characterized in that said support consists of a cylinder (30) or of two semi-cylinders (18, 19) arranged in a specular manner at opposite sides of the webbing (38; 29).

2. The Zip according to claim 1, characterized in that the aforementioned half-cylinders (18, 19) have holes (27, 28) which traverse them from side to side and are firmly joined one to the other and to the webbing itself (29) by means of a pin (24) which, traversing the holes (27, 28) present in the half-cylinders, pierces, in the middle, the fabric of the webbing.

3. The Zip according to claim 1, characterized in that said half-cylinders (18, 19) have two pairs of identical tracks (20, 21) and (22, 23) positioned on their horizontal planes, or upper and lower faces, perpendicular to the longitudinal plane of the halfcylinders.

4. The Zip according to claim 3, characterized in that said coupling elements (5) have a pair of legs with an L shape (6, 7) having, in their inner part, four protrusions (8, 9, 10, 11) apt to slide in the tracks of the abovementioned half-cylinders (20, 21, 22, 23).

5. The Zip according to claim 4, characterized in that it has two of the aforementioned protrusions (8, 9) positioned in the horizontal part of the “L” of each leg (6, 7) of the coupling element (5), while the other two protrusions (10, 11) are positioned in a specular manner in front of the latter, under the head of the coupling element.

6. The Zip according to claim 3, characterized in that the protrusions positioned in the horizontal part of the legs (6, 7) of the coupling element (5) are inserted in the lower tracks (22, 23) of the half-cylinders (18, 19), while the protrusions arranged in a specular manner (10, 11) are inserted in the upper tracks (20, 21) of the halfcylinders (18, 19).

7. The Zip according to claim 1, characterized in that said cylinder (30) has a vertical slot along the central axis (37), which traverses it for the entire length of the diameter of the lower base.

8. The Zip according to claim 7, characterized in that the edge of the webbing (38) is inserted in the aforementioned slot (37), the walls of which have a knurling (36), and each cylinder (30) is firmly fixed to the fabric by means of compression.

9. The Zip according to claim 7, characterized in that each cylinder (30) has, as lower base, two lunettes (32, 33) in which are placed two identical and specular tracks (34, 35), perpendicular to the longitudinal plane of the cylinder.

10. The Zip according to claim 7, characterized in that each cylinder (30) has at the centre of the upper base a hole (31).

11. The Zip according to claim 7, characterized in that said coupling elements (12) have a pair of legs in the shape of an “L” (13, 14) having, in their inner part, three protrusions (15, 16, 17) apt to slide in the tracks (34, 35) and in the hole (31) of the abovementioned cylinder (30).

12. The Zip according to claim 11, characterized in that it has two of the aforementioned protrusions (15, 16) positioned in the horizontal part of the “L” of the leg (13, 14) of the coupling element (12) while the other protrusion (17) is positioned in front of the latter, under the head of the coupling element (12), exactly in the centre of the horizontal line of its internal groove.

13. The Zip according to claim 7, characterized in that the lower protrusions (15, 16) of the coupling element (12) are inserted in the tracks (34, 35) of the cylinder, while the upper protrusion (17) of the coupling element (12) is inserted in the hole (31) present in the upper base of the cylinder itself (30).

14. A Pivoting coupling element (5; 12) configured to be applied by means of a respective support formed by a pair of half-cylinders (18,19) or by a cylinder (30) to a pair of webbings (29; 38) to form an element of a zip according to claim 1.