IT9030645U1 - FOOTBALL FOR SPORT SHOES - Google Patents

Description

"VARIOFLEX INSOLE FOR SPORTS SHOES"

SUMMARY

The insole, according to what is claimed, is made up of two parts substantially connected in the metatarsal area, which have a different compliance due both to the different materials used, and to a structure with appropriately localized ribs and notches.

Depending on the position of the choice of these ribs and notches as well as the worn material and accessory elements, it is possible to obtain an insole that conditions the structural characteristics of the shoe obtained.

the most convenient field of application is that of cross-country ski shoes.

DESCRIPTION

Many types of insoles are known in the sector of shoe breakers which are made with various tapes of materials, various combinations and with additions of other different elements.

Clearly, the biggest problem to be solved is to create an insole that is particularly economical despite the validity of a structural behavior in harmony with the stresses of the shoe of which it will be a determining element.

The solution of this problem is the primary aim of this innovative project.

Another necessary purpose to be achieved is to create an easy-to-use insole in a normal type of sports shoe.

filter purposes are the possibility of creating a slab with localized compliance and / or flexibility from the outset or an insole or / and auxiliary means can be adjusted as desired, the stiffness and therefore the deformability.

It is possible to achieve this whole set of goals, with an insole that is characterized by the fact that it has been made in two disjointed parts connected to each other in the netatarsal area, these two areas presenting different deformability both for particular constitution and for the choice of a towards plastic material.

In many cases it may be convenient to adopt a mechanical tension device, which can be adjusted so as to impose pre-established initial deformation values.

The slab is illustrated in some of its previous versions, in the attached drawing tables comprising four figures of which s

Figures 1 and C show respectively a lower and an upper view of the insole;

Figures 3 and 4 show two median sections of two versions of the base according to the invention.

In the aforementioned Figures, the insole, by way of example, is made up of two zones fi and 6, connected to each other in the metatarsal zone, according to line C.

The two parts of zones A and B can be easily obtained individually with two injection operations, in different molds of plastic material of different mechanical characteristics.

The association according to the Cipuò line can be obtained by stitching, gluing or by the simultaneous combination of several complementary techniques.

It is also possible to think of obtaining the insole already assembled in its two parts by means of a double injection of OVP plastic material, the first injected product is connected directly to the second in the second injection phase.

In the upper face of the front part f), there are parallel transverse grooves D, whose width, number and depth ’, allows to accentuate the flexibility’ of this area.

In the lower face of the same area fi, there are parallel transverse ribs E, which stiffen this area with respect to the transverse flexion.

The combination of the grooves D and the ribs and allows to obtain a zone which flexes a lot in the longitudinal direction but which is consistently rigid to transverse deformations, that is, to torsion.

This behavior is well suited to the creation of a cross-country ski shoe, where the alternating step, characteristic of this sport, "requires good longitudinal flexibility" and great resistance to torsion.

To accentuate this torsional resistance in the area B, already made with a more robust material, and with greater thicknesses, longitudinal ribs F are provided, which concur and join in the heel area.

In order to further control the stiffness and flexibility of the insole, the use of an adjustable accessory device consisting of a metal blade 13, anchored at the front to the area A and ending at the rear with a threaded shank t on which a ring nut H is screwed the rear part of the zone H and can be external to the shoe.

Bringing this blade G tension, we intervene in the behavior of the insole, being able to vary the fiexibility

This type of insole has been specially designed to make cross-country sports footwear, where greater is the need to have longitude flexibility characteristics combined with torsional stiffness characteristics.

Using different materials for the two parts of the slab, sifting suitably grooved! re and ribs and by acting on the metal blade if necessary, it is possible to obtain any mechanical behavior of the slab itself.

Claims (1)

CLAIMS 3) Insole for sports shoes which is characterized by the fact that it is made of two distinct parts connected to each other in the metafarsal area. these two areas have different deformability both for the particular structure and for the choice of different plastic materials, and being connected by a metal blade whose tension can be adjusted. Insole as in claim 1 characterized by the fact that the front part is made of a more flexible material and has lower transverse grooves and front transfer ribs 31 Insole as in claim 1 characterized by the fact that the rear part is made of a more rigid material, and has longitudinal stiffening ribs in the lower face. 4) Insole as in claim 1 characterized by the fact that the two parts are connected by gluing, gluing or by combining these techniques. 5) Insole as in claim 1 characterized by the fact that to further regulate the stiffness and / or flexibility, a metal or plastic blade is provided, fixed at one end to the front part and ending, at the rear with a threaded qarnbo where a ring nut is screwed onto the rear area of the insole, 6) insole for sports shoes with the characteristics illustrated and described.