CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation of PCT/IB2020/056642, filed Jul. 15, 2020, which claims the benefit of Italian Patent Application No. 102019000011757, filed Jul. 15, 2019, the contents of each of which are incorporated herein by reference.
TECHNICAL FIELD
The present disclosure relates to belts and more particularly to a belt with an elastic insert for holding a buckle to the strap and a related manufacturing method of a belt.
TECHNOLOGICAL BACKGROUND
The belts are composed of a strap, that is a strip to be wrapped around the waist, hooked from one end to a buckle that engages a hole placed at the opposite end of the strap. Depending on how the buckle is held to the strap, the belts can be of the fixed-length type or of adjustable-length type. For example, in fixed-length belts the buckle may be fixed to the strap by folding one end of the strap around an anchoring bar of the buckle and by sewing the folded end of the strap so that the anchoring bar can no longer be released without removing the seams.
More typically, the strap 2 of the fixed-length belts has an end as shown in FIG. 1 with snap fasteners composed of male elements 1a and female elements 1b. By folding this end around the anchoring bar of the buckle and snapping the male 1a and female 1b elements of the snap fasteners together, the buckle remains constrained to the strap 2 until the snap fasteners are opened.
In order to shorten the length of the belts at will, the belts are made as shown in FIGS. 2 to 4 with three distinct parts: the strap 2, the buckle 6 and a hooking system consisting of a hooking strip 3 equipped with fixing means 1a, 1b. The strap 2 has through holes 4, as shown in FIG. 3, and is no longer folded around the anchoring bar of the buckle 6, but is held to it by the hooking strip 3, commonly called or “oval” for its shape, on which the two elements male 1a and female 1b of the snap fasteners are placed. When the hooking strip 3 is folded around the anchoring bar of the buckle 6, the strap 2 is crossed by the snap fasteners 1a, 1b and is firmly bound to the oval 3 together with the buckle 6.
As an alternative to snap fasteners, it is possible to use any other removable male-female fastening means, such as a screw 5 that crosses the strap 2 of the belt and engages a retainer, so that the end of the strap 2 folded around the anchoring bar of the buckle 6 remains held until the screw 5 is unscrewed from the retainer.
In any case, the shown belts have a fixed length, as they are not made of deformable material thus they cannot accommodate slight variations in the user's waistline, consequent to the normal weight fluctuations that can occur over time. As a result, hardly will be the belt comfortable because most of the time it will be slightly longer or slightly shorter than the user would desire.
Belts with an elastic strap are currently marketed, but they are more difficult to be shortened. Furthermore, they are subject to deformations over time and, when they are stretched to be tightened to the waist, they visibly become thinner and aesthetically are less pleasant than belts with a strap made of non-extendable material.
The document JP2007044066A, on the basis of which the preamble of claim 1 has been drafted, discloses an elastic belt of the type shown in FIGS. 5a and 5b, that can be used to keep closed a suitcase. It comprises a portion of elastic fabric 4 which surrounds an anchoring bar of a buckle 51, wherein the portion of elastic fabric 4 is sewn on itself only so as to retain the anchoring bar of the buckle 51.
SUMMARY
Traction tests carried out by the applicant, by hanging a test weight to the belt, have shown that the solution illustrated in FIGS. 5a and 5b does not allow to achieve sufficient tensile strength to be implemented in belts to be used to support trousers. In particular, it has been found that an ordinary seam, of the type used for sewing leather belts, made on the elastic fabric 4 to surround the anchoring bar of the buckle 51, deteriorates rapidly until it breaks as soon as a weight greater than 10 Kg is hung to the belt. Such a limit makes the known elastic belt shown in FIGS. 5a and 5b unusable for holding trousers, since the seam on the elastic fabric 4 would break under the pressure of the user's body.
Without being bound to a theory, such a restrictive limit to the tensile strength in the elastic belt of FIGS. 5a and 5b should be due to the fact that the seam is made exclusively on the elastic fabric 4 and that thus the wire (or wires) of the seam are not anchored on a substantially non-deformable base. When the elastic fabric 4 is pulled, the points of the fabric 4 crossed by the seam thread tend to move one relative to each other, so that the threads are easily torn.
It has been designed and is the object of this disclosure a belt with a strap made of a material that substantially it is not elastically extensible. The belt, however, adapts elastically to changes in the user's waistline while maintaining the external appearance of the belts with non-extendable material strap. This excellent result has been obtained with a belt made with a manufacturing method as defined in the appended claims.
The belt of this disclosure has a strap made of a substantially non-elastically extendable material, an elastic insert made of an elastic material folded on itself and fixed to one end of the strap in a position longitudinally opposite to a tip of the belt strap, and a buckle. The elastic insert is attached to the strap, preferably within the strap, so as to retain an anchoring bar of the buckle, so that the buckle can be removed longitudinally from the strap with a traction force sufficient to overcome the restoring force of the elastic insert.
The elastic insert can be made, for example, of polyester, or elastodiene, or of a mixture of polyester and elastodiene. In one aspect, the elastic insert is made of 78% polyester and 22% elastodiene.
According to one aspect, the opposite edges of the elastic insert folded on itself are sewn with a bar tack to the strap, preferably inside the strap, so as to hold the anchoring bar of the buckle.
According to one aspect, one end of the strap opposite the tip is split in the direction of the strap thickness and defines two fins, between which the opposite edges of the elastic insert folded on itself are inserted.
According to one aspect, the elastic insert is hidden from view by an oval that defines two opposing flaps directed in the transverse direction, and a strip directed in the longitudinal direction, configured to be folded around the elastic insert, fixed together. The claims as filed are an integral part of this description and are herein incorporated by express reference.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a snap fastener end of a belt whose length cannot be adjusted.
FIG. 2 shows a snap fastener end of a belt adjustable in length with the strap separated from the hooking strip.
FIG. 3 shows a strap of a belt with through holes for hooking to the snap fasteners of a hooking strip.
FIG. 4 shows a hooking strip of a belt closed around a buckle by means of a screw inserted in the relative retainer.
FIGS. 5a and 5b are perspective and profile views of a known elastic belt.
FIG. 6 shows a strap 2 for manufacturing a belt according to an aspect of the present disclosure with seven holes of the waistline defined longitudinally in a row.
FIG. 7 is a profile view of the strap of a belt according to an aspect of the present disclosure split in the sense of the thickness to form two flaps.
FIG. 8 shows an elastic insert 9 of a belt according to an aspect of the present disclosure, with a slot in which to insert the prong of a buckle.
FIG. 9 shows the elastic insert folded around the anchoring bar of a buckle, with the opposite ends of the elastic insert folded on itself sewn between the fins obtained in the thickness S of the strap.
FIG. 10 shows the elastic insert of a belt according to an aspect of the present disclosure, fixed to the strap so as to retain the anchoring bar of the buckle.
FIG. 11 shows the elastic insert folded around the anchoring bar of a buckle, with the opposite ends of the elastic insert folded on itself sewn directly on the strap so that the strap is sandwiched therebetween.
FIG. 12 shows the elastic insert of a belt according to an aspect of the present disclosure, directly sewn on opposite sides of the strap so as to retain the anchoring bar of the buckle.
FIG. 13 shows an oval shaped to hide the elastic insert of FIG. 7, so as to define two opposed flaps directed transversely and a strip directed longitudinally.
FIGS. 14, 15 and FIG. 16 show in succession how to place and close the oval of FIG. 13 respectively so as to hide the elastic insert, according to the manufacturing method of the present disclosure.
FIG. 17 is a front view of a belt according to the present disclosure.
FIGS. 18 and 19 are pictures of the external and internal side, respectively, of a part of a leather belt made according to the method of this disclosure.
DETAILED DESCRIPTION
The method of manufacturing a belt according to the present disclosure will be illustrated in detail with reference to FIGS. 6 to 19.
FIG. 6 shows a strap 2 of a belt according to the present disclosure. It is made of a material not elastically extensible, such as a strip of leather, and the holes for adapting to the waist (in the figure there are seven holes) defined longitudinally in a row in a central position relative to the height H1 of the strap 2. In one aspect, the waist holes are spaced 29 mm apart. According to the manufacturing process of this disclosure, as shown in FIG. 7, the end of the strap 2, opposite to the tip 7 of the belt, is split longitudinally and in the thickness direction S of the strap 2. In this way, two fins 8a and 8b are created, preferably of equal thickness, which part from the strap 2.
Said fins 8a and 8b will preferably have a length comprised between 5 mm and 30 mm, more preferably between 10 mm and 20 mm, still more preferably a length of 15 mm.
According to the method of this disclosure, an elastic insert 9 is thus provided, which for example can be of polyester, which is a strip having a height H2 preferably smaller than the height H1 of the strap 2, for example of the type shown in FIG. 8, with a slot 10 in which to insert the prong of the buckle, if present. If, on the other hand, the buckle was of the type (not shown in the figure) consisting of a plate with a peg that slips into a hole in the belt, then in this case the elastic insert 9 may also not have any slots 10. Referring to the case shown in the figures, in which the buckle has a prong, if the prong of the buckle is inserted into the slot 10, the elastic insert 9 is folded around the anchoring bar 11 of the buckle, as shown in FIG. 8, and between the fins 8a and 8b formed in the thickness S of the strap 2 the opposite ends of the elastic insert 9 folded on itself are fixed. In this way, the elastic insert 9 is firmly fixed to the strap 2 of the belt.
In one aspect, the elastic insert 9 is an elastic fabric web.
As shown in FIG. 9 and FIG. 10, the ends of the elastic insert 9 folded on itself are sewn directly together with the strap 2 by means of a bar tack 12 which simultaneously passes through both the strap 2 and the elastic insert 9, with the fins 8a and 8b sandwiching the ends of the elastic insert 9.
According to less preferred aspects, not shown in the figures, the ends of the elastic insert 9 are glued between the flaps 8a and 8b and are sewn.
Once the elastic insert 9 has been fixed, the anchoring bar 11 of the buckle 6 is permanently hooked to the strap 2 as shown in FIG. 9.
According to an alternate aspect, the ends of the insert elastic 9 are sewn directly on the frame 2 in the manner shown in FIGS. 11 and 12, so that the same bar tacks 12 simultaneously passes through both the strap 2 and the elastic insert 9, with opposite ends of the elastic insert 9 which sandwich the strap 2. Also in this case, as in the embodiment of FIGS. 9 and 10, the elastic insert 9 is not sewn on itself, as in the belt disclosed in document JP2007044066A, but is firmly anchored to the strap 2 by means of the bar tack 12.
Experimental tests carried out by the applicant have shown that a belt made in the manner indicated in FIGS. 9 to 12, by sewing the elastic insert 9 directly on the strap 2 with a same bar tack 12, is capable of withstanding a weight of 80 Kg without being damaged.
In order to hide the bar tack 12 from view, which would be aesthetically unattractive, an oval 13 of the type shown in FIG. 13 is optionally provided, which is substantially an element made of material suitable for manufacturing belts, such as for example fabric or leather, shaped in such a way to define two opposing flaps 14a and 14b directed transversely and a strip 15 directed longitudinally. On each flap 14a and 14b and on the longitudinal strip 15 are defined holes 16a, 16b, intended to be engaged by removable or non-removable fixing means, such as, respectively, the male and female elements of snap fasteners or iron rivets. In a substantially central position a second slot 17 is defined, through which the prong of the buckle will be passed.
The figures show two holes 16a and 16b on each flap 14a and 14b and on the longitudinal strip 15. The choice of making two holes 16a and 16b is preferred because it is more aesthetically pleasing, but it is also possible to make a single hole 16b on each flap 14a and 14b and on the longitudinal strip 15, or even three or more holes arranged in various ways. Regardless of the number of holes made on each flap 14a and 14b and on the longitudinal strip 15, they will be arranged so that the corresponding holes 16a, 16b are superimposed when the flaps 14a and 14b and the longitudinal strip 15 are folded around the elastic insert 9, so that the corresponding holes 16a, 16b are simultaneously engaged by removable fixing means, to keep the flaps 14a and 14b and the strip 15 folded around the elastic insert 9.
As shown in FIGS. 14, 15 and 16, according to the manufacturing process of this disclosure:
- the oval 13 is placed in correspondence with the elastic insert 9 fixed to the strap 2,
- the prong of the buckle 6 is inserted in the second slot 17,
- the longitudinal strip 15 is folded around the anchoring bar 11 of the buckle 6 longitudinally to the strap 2,
- the flaps 14a and 14b are folded transversely to the strap 2, so as to overlap the holes 16a between them and the holes 16b between them,
- fixing means 18a, 18b are inserted to engage the holes 16a and 16b together, respectively, so as to keep the oval 13 in a closed configuration to hide the elastic insert 9 from view.
The inside and the outside of the mounted belt will appear respectively as shown in FIGS. 16 and 17. Unlike the belts which can be shortened with an oval, such as that of FIG. 2, in the belt of the present disclosure the oval 13 is not fixed directly to the strap 2 of the belt but is hooked only to the anchoring bar 11 of the buckle 6. By pulling the buckle 6 in the direction longitudinal to the belt, the insert elastic 9, for example made of polyester, elastically elongates and the strap 2 moves away from the buckle 6 sliding in the middle of the flaps 14a and 14b of the oval 13 closed on themselves.
Preferably, a ring 19 is fixed on a face of the oval 13 intended to remain outside the belt, so as to constitute a loop in which to insert the tip 7 of the belt once tightened at the waist.
Working prototypes of belts have been made according to the process of this disclosure. Pictures are shown in FIGS. 18 and 19 respectively of the outer side and of the inner side of a part of a prototypal leather belt. The oval 13, kept in the closed configuration by the rivets 18a and 18b, hides the elastic insert 9 from sight. The strap 2 of the belt is enveloped by the oval 13 but can slide in it by pulling the tip 7 of the belt overcoming the restoring force of the elastic insert 9.
With the disclosed method it is also possible to make straps for bags or wrist watches.
Patent Grant
11963586
