FR2849996A1 - Adjustable strap arrangement for single-strap backpacks comprises elastic strap which serves as both main and secondary shoulder strap that acts between two textile supports with elements connecting the strap to the body of bag - Google Patents

Abstract

An elastic strap (1) which serves as both main and secondary shoulder strap acts between two textile supports representing elements connecting the strap with a body of a bag. The connecting elements coming from the body of the bag comprise an upper or shoulder section (2) associated with the elastic strap by an upper deviation element (4), and a lower section (3) stitched to one end of the strap. On return to its point of origin the elastic strap is guided through a lower deviation element (5) fixed on the lower section (3). The free end of the elastic strap (1) located beyond the lower deviation element (5) has a part (6) for attachment with a part (7) located at the base of the bag and on the side opposite to the lower section (3).

Description

The present invention relates to an adjustable strap device and

scalable for

  bags called "single straps" and other accessories, intended to improve ergonomics and user comfort which still need to be improved in this area.

  The device according to the invention makes it possible to meet this need, it indeed comprises 5, according to a first characteristic, an extensible part: the elastic strap, serving both as main and auxiliary strap.

  Indeed, this movable part allows the wearer of the bag, in addition to his propensity to adapt to different body sizes, to benefit from a secondary looping at the waist, which provides better grip of the accessory if necessary.

  According to a second characteristic, particular arrangements are necessary for the proper functioning of the belt, this is why the bag has certain specific elements allowing a satisfactory development of the latter.

  According to particular embodiments: The volume and the shape of the bag or of the accessory can vary considerably, which does not change the organization of the device.

  The elastic belt may be single or double in its main development for reasons of amplitude or maintenance.

  The strap can be conventional (without elastic property) or be retractable, that is to say associated with a winding mechanism.

  The accompanying drawings illustrate the invention: Figures 1; 2; 3 represent the bag in situation, that is to say carried by a mannequin, which makes it possible to understand its operation and the gestures being associated therewith.

  Figures 4; 5; 6 represent the bag in situation, according to another embodiment, (simple belt in its main development).

  Figures 7; 8; 9 represent the bag in situation, according to a last embodiment, (retractable strap).

  FIG. 10 is a back view of the bag in situation, with a cutaway, which makes it possible to highlight the mechanical reel according to the embodiment of FIGS. 7; 8; 9.

  With reference to these drawings, the device comprises an extendable part which acts both as the main and annex strap, called elastic strap (1) coming to play between two textile supports representing the elements for connection with the body of the bag. These two connecting elements emanating from the body of the bag are composed of a high part called shoulder strap (2), because as its name indicates it develops at the level of the shoulder and a low part called strap low (3). The lower strap (3) is connected to one end of the elastic strap (1) by sewing, while the shoulder strap (2) is associated with it by a connecting element called upper deflection piece (4). The elastic strap (1) therefore develops from bottom to top from the low strap (3) to the shoulder strap (2) at the level of which its travel is inflected by the high deflection piece (4) which plays both the role of a kind of rigid loop and pulley because it allows the elastic belt (1) to change direction radically by making it make a 10 turn at a hundred and eighty degrees which has the immediate consequence of bring it down to its point of origin where it is captured and channeled by the low deflection piece (5) which is fixed to the surface of the low strap (3). The free end of the elastic strap (1) which is located beyond the bottom deflection piece (5) is provided with a loop of any fixing system, male part (6), the complementary part of which 15 female (7) is located at the base of the bag and symmetrically on the side opposite to that of the low strap (3).

  A strip of Velcro (registered trademark), male part (8), is sewn on the outside of the elastic strap portion (1) located between the top (4) and bottom (5) deflection piece. Its complementary strip of velero (registered trademark), female part (9), is sewn on a portion of elastic strap (1) located just before the loop of any fixing system, male part (6). The association of the two velcro bands (registered trademark) allows tensioning and a firmer adjustment of the main strap.

  The particular configuration of the elastic strap (1) which is doubled in its main development (it turns around and produces two roughly equal parallel strip lengths), is a deliberate technique which makes it possible to obtain a percentage greater elongation with equivalent support when it is requested.

  As mentioned in the preamble and according to another embodiment, the main development of the elastic belt (1) may be simple, that is to say without doubling it (fig. 4; 5; 6 ). In this variant the elastic strap (1) does not need a high deflection piece (4) and its end connected to the bag is simply fixed by a stitch (10), (fig. 4) at the end shoulder strap (2) instead of the low strap (3).

  According to a last embodiment, the elastic belt (1) can be replaced by a conventional belt (without elastic property) or by a retractable belt (11), (fig. 7), that is to say a belt tensioned by through a spring reel (12), (fig. 10), housed in the body of the bag.

  s If the carrier of the bag decides to benefit from additional buckling at the waist, he just has to grasp the fixing loop, male part (6), constituting the free end of the elastic strap (1) or d 'a retractable belt (11) and to stretch it, in order to lock it in its complementary part, (female part) (7). The stretching of the elastic strap (1) or of a retractable strap (11) results in tensioning the entire device by bringing the shoulder strap (2) closer to the lower strap (3) providing a much firmer contact with the bag, further increased by the side closure at the waist. During its tensioning the elastic belt (1) slides in the high deflection piece (4) or if it is a retractable belt (11) simply emerges from the body of the spring reel (12), then slides in the lower deflection piece (5) which is oriented in accordance with the direction taken by this belt.

  When the user of the bag or the accessory no longer needs an auxiliary looping, he just has to unlock the elastic strap (1) which automatically flows back and returns to its place and its initial state, leaving no excess strap .

Claims (9)

  1) Adjustable and upgradeable strap device for bags and accessories, characterized in that it comprises a movable part: the elastic strap (1), which acts both as the main strap and as a strap.   2) Device according to claim 1, characterized in that the elastic belt (1) comes to play between two textile supports representing the connecting elements with the body of the bag.   3) Device according to claim 2, characterized in that these two connecting elements emanating from the body of the bag are composed of an upper part called shoulder strap (2) and a lower part called lower strap (3).   4) Device according to claims 2 and 3, characterized in that the low strap (3) is connected to one end of the elastic belt (1) by sewing.   5) Device according to claims 2 and 3, characterized in that the shoulder strap (2) is associated with the elastic belt (1) via a connecting element 20 called upper deflection piece (4) .   6) Device according to claims 4 and 5, characterized in that the elastic belt (1) develops from bottom to top from the low strap (3) to the shoulder strap (2) at which its stroke is bent by the high deflection piece (4). 7) Device according to claim 6, characterized in that the high deflection piece (4) plays both the role of a sort of pass and a pulley because it allows the elastic belt (1) to change radically from direction by making it make a hundred and eighty degree turn, which has the immediate consequence of making it descend 30 towards its point of origin.   8) Device according to claim 7, characterized in that returned to its point of origin, the elastic belt (1) is captured and channeled by the low deflection piece (5) which is fixed to the surface of the low strap ( 3).   9) Device according to claim 8, characterized in that the free end of the elastic strap (1) which is located beyond the bottom deflection piece (5) is provided with a loop of a fixing system any male part (6), the complementary female part (7) of which is located at the base of the bag and symmetrically on the side opposite that of the low strap (3).   I0) Device according to any one of claims 1 to 9, characterized in that a velcro strip (registered trademark), male part (8) is sewn on a portion of elastic strap (1) between the high deflection piece (4) and low (5). 10 II) Device according to claim 10, characterized in that the complementary velcro strip (registered trademark), female part (9) is sewn onto the elastic strap portion (1) situated just before the any fixing loop, male part ( 6).   12) Adjustable and upgradeable strap device for bags and accessories, characterized in that it comprises a movable part: a retractable strap (1 1), (fig. 7), that is to say a strap tensioned through a spring reel (12), (fig. 10) housed in the body of the bag.