WO1988006011A1

WO1988006011A1 - Blocking device for flexible ties

Info

Publication number: WO1988006011A1
Application number: PCT/FR1988/000084
Authority: WO
Inventors: Ali Bakouri
Original assignee: Ali Bakouri
Priority date: 1987-02-17
Filing date: 1988-02-16
Publication date: 1988-08-25
Also published as: FR2610799B1; FR2610799A1; AU1362788A

Abstract

Blocking device for flexible ties, particularly for shoe laces, consisting of a case (38) provided with two eyelets (1), each of which receives one lace before both laces pass through the hole (3') in the tongue (2). The movement of the case (38) down the laces tautens grip the lace. The laces are blocked by folding down the tongue (2) until it fits over the projection (14). Excess lengths of lace are then lodged in notches (11) and held in place by a projection (6) when the decorative cover (5) is shut, said cover being provided with two projections (9) designed to fit partially into the eyelets (1) to absorb vibration caused by walking.

Description

Flexible link blocking device

The present invention relates to a locking device for flexible cord and more particularly for shoe laces. Locking these laces traditionally requires the creation of a knot, an operation which is often ineffective and particularly laborious for children.

- Untying the laces during the walk creates a danger which immediately requires tying them up, often in unfavorable circumstances and places.

Several systems have taken an interest in this problem without solving it with the simplicity necessary for a solution to this type of disadvantage so trivial.

- The example of patent 2224976 may offer a solution but requires site complex installation of the proposed device.

The device according to the invention makes it possible to rem: edit the mentioned drawbacks by eliminating the knotting of laces, replacing it with a compact process of great simplicity. It is in fact made up of a small box having - on two opposite walls an eyelet intended to receive a lace each; the laces then pass through at least one orifice of a pivoting tab so¬ lidary of the case.

The translation of the housing by the user along the laces up ^one clamping and pressing the tab pivoting about an axis - parallel to the axis common to the two eyelets, puts the tongue in a po¬ sition such that it locks the laces under a projection located at the edge of each eyelet. As a result, the traction exerted by the two laces of each side tends to lift the tongue which cannot be released and which retains them with a resistance proportional to this traction. According to a variant embodiment of the device, the laces are blocked on the walls of at least one projection located in the middle of the surface separating the two eyelets. They are introduced into the orifice (s) of the tongue which have previously received the laces coming out of the eyelets whose walls are inclined along their respective axes converge at the center of the orifice (3) - or (3 ') in a position of the ideal tongue for the translation of the whole housing.

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Once locked, the laces are housed in the different slots provided on the walls of the case. They are retained by a cover, whether decorated or not, having two protrusions partially penetrating into the eyelets, intended to absorb the shock waves caused by walking. - The entire device can be produced in a single plastic injection molding operation.

The device is shown in plan in Figure I, locking tab (2) closed, cover (5) open, in section in Figure 2, 3 and 6. Its dimensions are of the order of 3 cm for the length, 2.5 cm for width and 1 cm for height. It has vertically along each of its two large side walls an eyelet (I) wide enough to receive a lace leaving the rivets (12) of the shoe. These two laces then pass through the orifice (3) of the tongue (2), a translation of the entire housing (38) along the laces causes the shoe to be tightened. The folding of the tongue (2) allows the laces to be blocked around then under the projections (-), where preferably two horizontal bosses (13) flatten the edges of this tongue on the lower faces of these same projections (4). According to the embodiment of the device according to FIGS. 6, 7 and 8, the tongue (2) has an orifice (3 ') weakened at (15) along its longitudinal axis, into which the laces emerging from the rivets (12) are introduced. then eyelets (I).

The translation of the housing (38) until the tightening of the shoe en¬ drags the folding of the tongue (2), the latter coming to bite the crown of the projection (14) for .riant a bump on the central part of the housing (38) - thereby blocking the laces which are all the more maintained as their tensile stress is important.

Indeed, the laces tend to pivot the internal edges of the orifice (3 ') of the tongue (2) in the direction of the pull; the flared geometry of the projection (14) not allowing it; the laces are all the more - crushed, therefore maintained.

REPLACEMENT SHEET According to the various embodiments of the device: after their blockages, the laces leaving the orifice (3) or the orifice (3 ') of the tongue (2) are successively accommodated in the slots (II) provided on the side walls of the housing (38) according to the example in FIG. 5.

- They will be held against the bottom of the case (38) by the projection

(6) provided on the cover (5). After closing the said cover (5) which, maintained for example by the female retaining element (7) in the form of an elastic hook conforming to the shape of the male retaining element (8) disposed projecting from the walls of the case (38); under pressure from the user's finger.

The projecting elements (9) arranged laterally on the internal face of the cover (5) maintain the section of the ribs located in part around the projection (4) bordering each eyelet (I) at a constant length to avoid back and forth movement which can detach or pr - evoke the wear of the laces at the level of blockage following vibrations caused by walking.

The proposed device has no preferential sense of use; in fact, the folding of the locking tongue (2) towards the user or the most advanced end of the shoe does not affect the effectiveness of the restraint system.

Claims

I) Locking device for flexible ties and more particularly for shoe laces characterized in that it consists of a case (38) comprising, on two side walls, two eyelets (I), each receiving a lace which then passes into at least one orifice (3), (3 '), of a _ tongue (2) integral with the housing (38), so that the translation of the assembly and the folding of the tongue (2 ) causes the laces to be blocked, either under projections (4) located at the edge of the eyelets (I), or around a crowned projection (14) forming a bump in the middle of the surface between the two eyelets (I). - The cover (5), whether or not decorated on its outer face, makes it possible to absorb the shock waves caused by walking, thanks to two projections (9) which partially penetrate the eyelets (I).

The excess lanyard ur laces will be led by the user in reserves or slots (II) located on the walls of the housing (38).

_ 2) Device according to claim I characterized in that the entire device is produced in a single plastic injection molding operation.

3) Device according to claim I characterized in that the orifice (3 ') has, along the longitudinal axis of the tongue (2) two zones - lesser- thickness (15).

4) Device according to claim I characterized in that two bos¬ wise (13) are arranged under the projections (4) so as to force the tongue (2) to be housed immediately under the undersides of said projections (4).

- 5) Device according to claim I characterized in that the cover cou¬ (5) has two projections (9) arranged laterally on its internal face for¬, after closing the cover (5), absorb the vibrations pro¬ voided by walking.

6) Arrangement according to claim I characterized in that the walls of the two eyelets (I) are inclined along their respective axis, conver¬ gent to the center of the orifice (3) or the orifice (3 ¹ ) in a position of the tongue (2) ideal for the translation of the case r (35).