FR3038211A1 - ADJUSTABLE STRAP ATTACHMENT DEVICE - Google Patents

Abstract

The invention relates to a fastening device comprising at least one endpiece (20) provided with: - a through orifice (21) positioned at a first end (el) of the end piece and adapted to receive a first portion (12) of a strap, and - a longitudinal housing (24) positioned at a second end (e2) of the nozzle, opposite the first end, the longitudinal housing being adapted to receive a second portion of the strap (11).

Description

ADJUSTABLE STRAP ATTACHMENT DEVICE TECHNICAL FIELD

The present invention relates to a strap attachment device for hanging or holding an object by means of a strap whose length can be easily and quickly adjusted. The invention has applications in the fields where a strap is used for the carriage or transport of objects. It finds, for example, applications in the field of luggage for bag straps as well as in the fields of communication and photography for the wearing and transport of telephones and cameras.

STATE OF THE ART

Webbing fasteners are attachment means frequently used in everyday life. They are used, for example, to secure the maintenance of glasses, to carry bags, electronic devices, cameras, badges, etc. They are also used in the field of clothing, for example for the adjustment of the suspenders of overalls or support throats.

Many strap fasteners are currently on the market. Some fasteners consist of a rivet or seam; the strap, or strap, is not adjustable. Other attachment devices require a node made by the user. In this case, the strap is difficult to adjust in length because its adjustment requires the use of both hands of the user.

Another type of fastening device consists of a tongue buckle, also called belt buckle, which comprises a barb, or tip, adapted to be inserted between the mesh of the strap or in holes provided for this purpose in said strap. Such a pin buckle also requires the use of both hands of the user to adjust the length of the strap.

Yet another type of fastening device consists of a sliding loop which comprises at least two contiguous orifices separated by a cross member on which is fixed one end of the strap or strap. Such an attachment device also requires the use of both hands of the user to adjust the length of the strap. In addition, the adjustment of the length of the strap is tedious, with such a sliding loop, because rutilisateur must push the strap through one of the orifices and then pull said strap out of the other orifice, the orifices being voluntarily restricted to keep, subsequently, the chosen setting.

Thus, all strap fasteners currently on the market are relatively difficult to adjust and require the use of two hands, which prevents anyone with the use of one hand can adjust, alone, the length the strap or strap of his fastening device.

SUMMARY OF THE INVENTION The object of the invention is precisely to remedy the disadvantages of the techniques described above. For this, the invention provides a strap attachment device comprising a tip adapted to be mounted on a strap and to be adjustable with one hand.

More specifically, the invention relates to a fastening device comprising at least one end piece provided with: a through orifice positioned at a first end of the end piece and adapted to receive a first portion of a strap, and a longitudinal housing positioned at a second end of the nozzle, opposite the first end, the longitudinal housing being adapted to receive a second portion of the strap. The tip of this attachment device is adapted to be traversed by the first strap portion and to be attached to the second strap portion, the two portions of straps being mounted in the nozzle in directions which are different and which vary when the device is being adjusted or when the device is set.

This device has the advantage of being easily adjusted by the user with one hand.

According to some embodiments, the tip is of parallelepipedal shape and the through hole is oblong.

These embodiments are suitable, for example, flat straps, rectangular section.

According to some embodiments, the tip has a cylindrical or prismatic shape, the longitudinal housing then being arranged in a direction perpendicular to that of the through hole.

These embodiments are suitable, for example, tubular straps, round section.

In some embodiments, the longitudinal housing has a slot in a thickness of the nozzle, this slot opening on a side face of said tip.

According to other embodiments, the longitudinal housing is a conical or cylindrical orifice opening on a front face of said tip.

In some embodiments, the through orifice is an open circumferential orifice provided with at least one ridge border.

According to some embodiments, the attachment device comprises a strap whose first portion passes through the through hole and the second portion, forming an end of said strap, is fixed in the longitudinal housing of the endpiece.

In some embodiments, the second end of the tip is molded around the end of the strap.

In some embodiments, the strap is made of a braided material incorporating braiding of metal or carbon.

According to some embodiments, it comprises two endpieces mounted head to tail on the strap.

BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and characteristics of the invention will appear on reading the description, illustrated by the following figures: FIGS. 1A and 1B show, respectively, a top view and a perspective view of a tip of the fastening device according to some embodiments. - Figure 2 shows a perspective view of a tip of the fastening device according to other embodiments. - Figure 3 shows a sectional view of the attachment device equipped with the tip of Figures 1A and IB. FIGS. 4A and 4B show the attachment device of FIG. 3, respectively, during and after adjustment of the strap length. FIGS. 5A and 5B show an example of a fastening device equipped with two end pieces. FIGS. 6A, 6B, 6C, 6D and 6E show different steps of the method of installing the fastening device of FIGS. 5A and 5B. - Figures 7A, 7B and 7C show different positions of the strap portions during and after adjustment of the fastener.

DESCRIPTION OF EMBODIMENTS

According to the present description and as shown in FIGS. 1A, 1B, 2 and 3, the attachment device 1 comprises a tip 20 and a strap or strap 10. The tip 20 has a through hole 21 and a longitudinal housing 24. The through hole 21 is positioned at one end el of the nozzle 20. The longitudinal housing 24 is positioned at the end e2 of the nozzle 20, which is opposite the end el. The through hole 21 is an open circumferential orifice for the insertion of the first portion 12 of the strap. This through orifice 21 is equipped with at least one sharp edge edge forming edge.

Figures 1A and 1B show an example of tip 20 having a substantially parallelepiped shape. In this example, the tip 20 has, for example, a form of right pad. In this example, the through hole 21 has an oblong shape. The outer edge 21a of the orifice 21 has an opening 22. The outer edge 21b and the inner edge 21a form ridges 23. The through orifice 21 is adapted to receive the strap 10 and to be traversed by said strap. For this, the strap 10 is inserted into the orifice 21 via the opening 22.

In this example, the longitudinal housing 24 is a slot or clearance made in the thickness of the nozzle 20, in a direction substantially perpendicular to the direction of the through orifice 21. The longitudinal housing 24 can lead to a side face of the tip 20, for example between two arms 25 of said tip.

The longitudinal housing 24 is shaped to receive a second portion 11 of a flat strap. In the example of Figure 3, the second portion 11 of strap is an end of said strap.

Figure 2 shows an example of tip 20 of cylindrical or prismatic shape. In this example, the longitudinal housing 24 and the through hole 21 are both substantially cylindrical holes. The through hole 21 passes through the nozzle from side to side, for example in its width. The longitudinal housing 24 passes through the tip partially in its length. The longitudinal housing 24 is disposed in a direction perpendicular to the direction of the through orifice 21.

The longitudinal housing 24 is an orifice, for example of cylindrical shape, adapted to receive the second portion, for example the end, of a round strap. This orifice has an end opening on a front face 26b of the nozzle 20 and a non-emergent end, within said tip. This strap portion is fixed in the longitudinal housing 24 by fastening means known to those skilled in the art, such as gluing. The through orifice 21 has an open circumference 22, opening on a side face 26a of the nozzle 20. The through orifice 21 is adapted to receive and be traversed by the first portion of the round strap. For this, the strap is inserted into the orifice 21 via the opening 22. The circumferences 23a, 23b of the through orifice 21 form edges adapted to lock the strap 10 in the position chosen by the user.

Whatever the embodiment (Figures 1 or 2), the through hole 21 and the longitudinal housing 24 have dimensions adapted to the dimensions of the strap they receive, that is to say dimensions a little greater than those of the strap to allow the reception / crossing of the strap while ensuring retention of said strap.

The strap can be made in all kinds of tear-resistant materials as long as these materials are neither smooth nor slippery. The strap can be made, for example, of polypropylene. The strap may be made of a braided material incorporating metal or carbon braiding, providing good tear strength. A flat strap according to the present disclosure may be, for example, a polyester webbing 10 mm wide and 0.6 mm thick.

In the following description, the attachment device will be described for a parallelepiped shaped tip and a flat strap. Those skilled in the art will understand that the operation of the attachment device is similar for a cylindrical or prismatic tip. Those skilled in the art will also understand that the thickness of a cylindrical or prismatic tip may be greater than that of a parallelepiped tip to adapt the locking surface of the strap to the type of strap: for a flat strap, the locking surface is mainly located in the width of the strap while for a tubular strap, the locking surface is located in the diameter of the strap but also in the length of said strap.

FIG. 3 shows a sectional view of a parallelepiped-shaped end piece 20 mounted on a flat strap 10. In this example, the end 11 of the strap 10 is fixed in the longitudinal housing 24. It can be fixed by any means conventional fastening, for example glue. It can also be fixed by molding the tip 20 around the end 11.

The first portion 12 of the strap 10 passes through the through hole 21. In the position of the strap 10 after adjustment shown in Figure 3, the first portion 12 of strap is in a direction substantially perpendicular to the position of the second portion 11 while the inter-portion portion 13 and the free portion 14 of the strap 10 are almost parallel. Indeed, in this position, the first portion 12 of strap through the orifice 21 by forming successively two complementary angles with the edges 23b and 23a of said orifice, generating two successive changes of direction. These changes in the directions of the strap generate frictional forces against the edges 23 of the through-orifice 21 which hold the tip 20 in the adjustment position chosen by the user. The skilled person will understand that the ratio of the dimensions between the strap and the tip 20 (including the dimensions of the through hole 21) is critical in the effectiveness of the locking of the strap 10. For optimum efficiency, the dimensions the width and thickness of the strap are slightly smaller than the dimensions of the through-orifice 21 of the nozzle. Such dimensions allow both the sliding of the strap 10 in the through hole 21 when the strap is perpendicular to the length of the tip 20 that the locking of the strap 10 by the edge 23 of the tip 20 when the strap is not perpendicular to the length of the nozzle 20. The tip 20 therefore has dimensions greater than at least a few micrometers to those of the strap. The through orifice 21 of the nozzle 20 may have, for example, a thickness equal to twice the thickness of the strap and a length and a width greater than 0.1 mm to, respectively, the width and the thickness 10. The Figure 4A shows the strap 10 in a setting position. In this position, the user maintains the tip 20 substantially perpendicular to the strap. The first portion 12 of the strap then passes through the through orifice 21 linearly without forming any angle. The second portion 12 and the inter-portion portion 13 and free 14 are substantially aligned. The strap 10 can slide inside the through hole 21, allowing easy adjustment of the length of the strap.

Figure 4B shows the device of Figure 4A when the tip 20 is released, that is to say withdrawn from the position perpendicular to the strap. This position corresponds to the position described above in connection with FIG.

FIGS. 5A and 5B show an example of a strap fastening device in which two similar end pieces 20 are each mounted at one end of the strap 10. Such an example of a fastening device can make it possible to attach, in parallel, two objects or two parts of the same object. The clip of FIG. 5A can furthermore make it possible to attach a single object with a strap forming a loop. In this case, as shown in FIGS. 6A to 6E, the strap is equipped with two identical end pieces 20a, 20b, each mounted at one end of the strap 10. In the examples of FIGS. 6A to 6E, the portion 10a of the strap 10 is inserted into the tip 20b, via the opening in the through hole 21 of said tip 20b (Figure 6A). Similarly, the portion 10b of the strap 10 is inserted into the tip 20a, via the opening in the through hole 21 of said tip 20a (Figure 6B). The parts 10a and 10b of the strap can then be superimposed (Figure 6C). The strap 10 can then be adjusted in length by sliding the end pieces 20a and 20b on the parts 10b and 10a of the strap to obtain a maximum length (FIG. 6D), a reduced length (FIG. 6E) or a minimum length (FIG. case where the two parts 10a, 10b of the strap are superimposed over their entire length).

FIGS. 7A to 7C show different positions of the end pieces 20a, 20b around the strap 10. In the adjustment position, shown in FIG. 7A, the end pieces 20a and 20b are parallel to each other; parts 10a and 10b of the strap are parallel to each other; the end pieces 20a, 20b are perpendicular to the strap portions 10a, 10b, which allows easy movement of said end pieces along the strap. In the holding position, or locking position, as shown in Figures 7B and 7C, the end pieces 20a, 20b are parallel to each other but they are no longer perpendicular to the strap portions 10a, 10b. The first strap portions 12 pass through the through orifices 21 angularly, which makes it possible to block the sliding of the end pieces. The strap 10 is then held in the adjustment position determined in FIG. 7A.

Claims (10)

1. Fastening device comprising at least one endpiece (20) provided with: - a through orifice (21) positioned at a first end (el) of the endpiece and adapted to receive a first portion (12) of a strap (10), and - a longitudinal housing (24) positioned at a second end (e2) of the nozzle, opposite the first end, the longitudinal housing being adapted to receive a second portion (11) of the strap (10). . 2. Fastening device according to claim 1, characterized in that the tip (20) is of parallelepipedal shape and the through hole (21) is oblong. 3. Fastening device according to claim 1, characterized in that the tip (20) has a cylindrical or prismatic shape, the longitudinal housing (24) being arranged in a direction perpendicular to that of the through hole (21) . 4. Fastening device according to any one of claims 1 to 2, characterized in that the longitudinal housing (24) has a slot in a thickness of the nozzle (20), this slot opening on a side face of said tip . 5. Fastening device according to any one of claims 1 and 3, characterized in that the longitudinal housing (24) is a conical or cylindrical opening opening on a front face (26b) of said tip. 6. Fastening device according to any one of claims 1 to 5, characterized in that the through hole (21) is an open circumferential orifice, provided with at least one edge edge (23). 7. Fastening device according to any one of claims 1 to 6, characterized in that it comprises a strap (10), the first portion (12) through the through hole (21) and the second portion, forming an end (11) of said strap, is fixed in the longitudinal housing (24) of the nozzle. 8. Fastening device according to claim 7, characterized in that the second end (e2) of the nozzle is molded around the end (11) of the strap. 9. Fastening device according to any one of claims 7 to 8, characterized in that the strap is made of a braided material incorporating a braiding of metal or carbon. 10. Fastening device according to any one of claims 7 to 9, characterized in that it comprises two end pieces mounted head to tail on the strap.