Hook for elastic band and tensioner.

Abstract

The hook (1) for an elastic tensioner has a connecting interface (10) adapted to receive an elastic cable (20) for attachment, and a hooking loop (11) preferably forming a carabiner. This hook is notable in that the connecting interface has first (100) and second (101) straight terminal arms and a straight middle arm (103) connected to the first straight terminal arm (100) by a first angled arm (104) and to the second straight arm (101) by a second angled arm (105), said arms forming two opposing recesses, the first of which receives an elastic cable forming a knot around, in particular, the first angled arm (104). The arm (101) is extended by a retaining tail (106) designed to hold the cable in a position that maintains the tightness of the knot it forms at the connecting interface (10). The invention also relates to an elastic tensioner.

Description

technical field

[0001] The present invention is in the field of equipment used to assemble elements to each other in a detachable manner and relates to improvements to elastic tensioners of the "Sandow" type.

[0002] More particularly, the present invention relates to a hook for, in particular, an elastic tensioner and to an elastic tensioner comprising this new type of hook. Prior art

[0003] Typically, elastic tensioners consist of an elastic cable with a fixing hook at each end. Usually, the elastic cable has a metal clip at each end, and each hook, formed from a rigid wire element, has an open hooking loop extending from a conical spiral connecting interface into which one of the two ends of the elastic cable is engaged and locked by the corresponding clip.

[0004] The clip-on locking mechanism for the elastic cable in the hooks makes it impossible, or at least extremely difficult, to modify the cable's usable length. For this reason, manufacturers offer tensioners in various standardized lengths, which are often unsuitable for the intended use. Another drawback of this locking method is the difficulty of replacing a damaged elastic cable. This is due to the need for appropriate clips and suitable crimping tools. Consequently, cable damage generally results in the complete disposal of the tensioner and its hooks.

[0005] Previously, several solutions aimed at easily modifying the length of the elastic cable were implemented. For example, document FR 2919905 describes a hook whose rear section has a bore into which an elastic cable is inserted and folded. The bore includes means for retaining the cable within it. Such an arrangement allows for quick adjustment of the cable length, but manufacturing such a hook is relatively expensive.

[0006] Furthermore, most known tensioners present the risk of unexpected release. To overcome this problem, various solutions have been implemented. For example, document FR 1 028 233 describes the use of a coil spring slid onto the loop to open or close it. This solution proves imperfect, as the coil spring, due to its elasticity, only partially prevents the opening of the fastening loop.

[0007] Document FR 2 465 114 shows a bungee cord of the "sandwich" type, whose end hooks are arranged in a carabiner configuration. This solution effectively prevents the hook from unhooking unexpectedly, but remains relatively expensive. The hook is made of synthetic material, and the carabiner, consisting of a single arm, is attached to the hook body. For this reason, the loop formed by the hook is opened by elastic deformation of the carabiner. The carabiner is then returned to the closed position of the loop by internal elastic forces. With repeated use, this design can lead to permanent deformation of the carabiner or even its breakage due to excessive fatigue.

[0008] A hook arranged as a carabiner, for an elastic tensioner, is also described in FR 2 492 916. This hook comprises a hook body to which are attached an elastic cable and a loop formed by two arms joined to each other, one of which is fixed to the hook body and the other of which has a free end arranged as an attachment means. This attachment means is designed to cooperate with a complementary attachment means formed on the hook body. Such a hook is made by molding a synthetic material.

[0009] JP H03 32237 also discloses a hook for an anti-slip device for pneumatic tires, according to the preamble of the first claim. Such a hook has an open loop at one end and an S-shaped interface at the opposite end, equipped with a cable locking ring. The cable cannot be effectively attached to this hook without the presence of this ring. Furthermore, given its intended use, this hook is not designed to accommodate elastic cables.

[0010] The hooks of the prior art, essentially those intended to receive an elastic cable in a detachable manner, do not include means to hold this elastic cable in an adequate position so that it can, in certain situations, detach accidentally from this hook.

[0011] One application of elastic tensioners is securing fruit tree protection nets to each other or to suitable structures. These nets are stretched over the canopy of the trees and provide protection against inclement weather, particularly hail. Securing them with elastic tensioners allows them to sag and spread apart under significant load, creating drainage openings typically located above the inter-row spaces. This protects the fruit trees and reduces the risk of damage to the nets. These elastic tensioners usually remain on the protective structure for several months, or even years, and over time, their elastic cord loses its elasticity and deteriorates. In such cases, the used tensioners are often discarded even though only the elastic cord is damaged. Description of the invention

[0012] The present invention aims to overcome the aforementioned drawbacks by providing a simple and inexpensive hook for an elastic tensioner, designed to eliminate the risk of accidental detachment and ensuring adequate retention of the elastic cable relative to the hook to prevent accidental disconnection. Another objective of the present invention is the implementation of a hook designed to facilitate easy replacement of the elastic cable without tools or accessories. A further objective of the present invention is the implementation of a hook designed to allow easy adjustment of the usable length of the elastic cable without tools or accessories.

[0013] For this purpose, the hook according to the invention for elastic tensioner, made by folding a rigid metallic wire element of suitable cross-section, having on the one hand, a connecting interface provided for removably attaching one of the end zones of an elastic cable and, on the other hand, a hooking loop provided for being attached to an object, said loop having a free end zone and defining a loop provided for receiving said object by passing through an opening, the connecting interface having a first and a second straight end branches and a straight middle branch, linked to the first straight end branch by a first bent branch and to the second straight end branch by a second bent branch, said bent branches forming two opposing hollows,said straight terminal and median branches being parallel to the direction of the tensile force that both the loop and the connecting interface must withstand due to the action of the elastic cable, the first straight terminal branch being extended by the attachment loop, and the first angled branch, defining a hollow oriented towards the loop, in communication with the latter, said first angled branch and the hollow it forms being provided to receive the elastic cable for attachment, is essentially characterized in that the width of the hollow formed by at least the first angled branch is equal to or less than the diameter of the cable intended to be attached to the connecting interface, and that the second straight terminal branch is extended by a retaining tail provided to receive the elastic cable, said retaining tail having a longitudinal geometric axis AA' parallel to the straight terminal and median branches.

[0014] Thus, the elastic cable will be radially compressed in the hollow of the first bent branch and held in a suitable position relative to it by the retaining tail, which, after the cable is knotted, will eliminate the risk of accidental detachment. Furthermore, these arrangements facilitate the attachment of the elastic cable to the connecting interface as well as the adjustment of its usable length.

[0015] The tensile force exerted by the cable on the first bent branch will contribute to increasing its degree of attachment to that bent branch in a permanent manner. Thus, any release of this force will not alter the degree of attachment of this cable to the connecting interface.

[0016] According to another feature of the invention, the restraint tail has a succession of turns, defining a housing provided to receive an elastic cable, the geometric axis of revolution of said turns forming the longitudinal axis AA' of said restraint tail.

[0017] According to another feature of the invention, the longitudinal axis AA' of the restraint tail is secant to the first bent branch.

[0018] According to another feature of the invention, the fastening loop comprises a basal arm extending from the first straight arm of the connecting interface, and the free end area of ​​the fastening loop is arranged as a clasp. The opening of the loop is closed by locking the clasp into the recess formed by the second angled arm. It is clear that such a simple and inexpensive solution effectively prevents the loop from detaching.

[0019] According to another feature of the invention, the fastening loop comprises an elastic arched arm extending the basal arm and determining with the latter the loop of said loop, the free terminal area of ​​the arched arm forming the free terminal area of ​​said loop and being arranged as a clasp.

[0020] According to another feature of the invention, the clasp is shaped into a hook-like beak.

[0021] According to another feature of the invention, characterized in that the arched arm of the hook loop is extended beyond the linking interface and the restraint tail and cooperates in closing the hook loop, with said restraint tail.

[0022] According to another feature of the invention, the restraint tail has, opposite the linking interface, a free terminal zone extending along a geometric plane normal or oblique to the longitudinal geometric axis AA', and comprising at the end a U-shaped curved retention beak, the concavity of which is oriented towards the arched arm, said retention beak being provided to receive the arched arm in the closing position of the hooking loop.

[0023] According to another feature of the invention, the clasp, provided at the end of the arched arm, is located behind and away from the retention beak, when the arched arm is engaged in said retention beak.

[0024] The present invention also relates to an elastic tensioner formed of an elastic cable to each end of which is fixed a hook according to the invention.

[0025] According to another feature of the invention, the cable is engaged transversely in the hollow formed by the first bent branch, leaving beyond said hollow a short dead strand, then is engaged transversely in the hollow formed by the second bent branch while surrounding the middle branch, is brought back into the hollow formed by the first bent branch and is then engaged in the retaining tail.

[0026] This design ensures a secure attachment of the cable to the connecting interface and allows for adjustment of the cable's usable length and its replacement. Furthermore, the tension applied to the cable increases the degree of clamping force. This achieves a particularly simple self-tightening effect of the elastic cable on the connecting interface. Finally, the cable's engagement in the retaining tail ensures that it remains in the correct position relative to the knot or loop it forms in the connecting interface, thus preventing the knot or loop from loosening.

[0027] Alternatively, according to another feature of the invention, the cable is engaged transversely in the hollow formed by the first bent branch, leaving beyond said hollow a short dead strand, surrounds the first terminal straight branch, is brought back into the hollow formed by the first bent branch and is engaged in the retaining tail.

[0028] According to another feature of the invention, the cable has at one of its ends an annular overthickness of a diameter greater than the width of the hollow formed by the first bent branch and is held in said hollow by said annular overthickness, which is capable of giving way under the effect of a tensile force of predetermined intensity exerted on said cable. Brief overview of the figures and drawings

[0029] Other advantages, purposes and features of the present invention will become apparent from the description of at least one preferred embodiment, given by way of non-limiting example with reference to the accompanying drawings. There Fig.1 shows a hook in a first embodiment, in an open state, The Fig. 2 shows a hook according to the first embodiment in a closed state, The Fig.3 is a view of a tensioner showing a step in mounting the elastic cable in a hook, The Fig. 4 is a view of a tensioner according to the invention showing the elastic cable of the latter fixed to the connecting interface comprising the hook, The Fig. 5 ] is a partial view of a hook showing an alternative implementation of the cable attachment to the link interface, The Fig. 6 is seen from a hook according to a second form of realization. Description of one embodiment of the invention

[0030] As shown, the hook 1 according to the invention is designed to be attached to any object and is intended to receive an elastic cable 20. This elastically deformable hook 1 is formed by bending a metal wire, for example, a high-yield-strength steel wire protected against corrosion, with a circular cross-section, for example, and a diameter of 3 mm. It is understood that this value is given for illustrative purposes only and does not limit the invention. The hook may be made of stainless steel wire or, after manufacturing, may receive an appropriate anti-corrosion treatment. This anti-corrosion treatment may be carried out before or after manufacturing the hook, for example, by galvanizing.

[0031] As can be seen in the accompanying figures, the hook 1, according to the invention, comprises, on the one hand, a connecting interface 10 designed to removably receive one of the end sections of an elastic cable 20 and, on the other hand, in front of the connecting interface 10, an elastic attachment loop 11, preferably forming a carabiner, designed to be attached to an object, a support, or other item. As can be seen, the connecting interface 10 and the attachment loop 11 are mutually extended.

[0032] The attachment loop 11 comprises a basal arm 12 extending from the connecting interface 10 and an arched arm 110, the concavity of which faces the basal arm 12 and whose free end zone forms the free end zone of said loop. As can be seen, this arched arm 110, in combination with the basal arm 12, defines a loop 13 intended to receive an object, not shown, to which the hook 1 will be attached.

[0033] The basal arm 12 and the arched arm 110 meet at the front end of the attachment loop 11 and form, at this point, a rounded nose 11a of the attachment loop. This nose 11a of the loop, under the effect of a tensile force exerted by the cable 20 equipping the hook 1, is brought against the object to which said hook 1 is attached by its attachment loop 11.

[0034] The loop 13 has an opening 14 formed between the connecting interface 10 and the basal branch 12. Preferably, this opening 14 is closable. For this purpose, a clasp 15 is provided, which, according to a first embodiment of the hook 1 ( Fig.1 And 2 ), is designed to be able to be engaged in the link interface 10 to close the opening 14.

[0035] The opening or closing of the loop 13 is achieved by elastic deformation of the loop 11, which allows the clasp 15 to be released from or engaged with the connecting interface. This clasp 15 is located in the free terminal area of ​​the loop 11, that is, at the free end of the curved arm 110. Advantageously, the clasp 15, according to the first embodiment of the hook 1, is formed by folding, preferably at a sharp angle, the terminal area of ​​the curved arm 110. This clasp is in the form of a preferably straight hook. This hook extends obliquely with respect to the geometric plane along which the hook loop 11 extends.

[0036] As can be seen in the accompanying figures, the connecting interface 10 preferably follows a substantially S-shaped form and has first 100 and second 101 straight terminal branches, as well as a straight medial branch 103. This medial branch 103 is connected to the first straight terminal branch 100 by a first angled branch 104 and to the second straight branch 101 by a second angled branch 105. The connecting interface 10, as described, is formed such that the straight terminal and medial branches are parallel to each other and parallel to the direction of the tensile force that both the attachment loop 11 and the connecting interface 10 must withstand due to the action of the elastic cable. The first straight branch 100 is axially extended by the basal branch 12 of the attachment loop 11.The second terminal straight branch 101 and the straight median branch 103 are located in the interval between the basal branches 12 and the arcuate branches 110.

[0037] The angled arms 104 and 105 form two opposing hollows, with a width equal to or less than the diameter of the elastic cable intended to be attached to the connecting interface 10. The first angled arm 104 creates a hollow oriented towards the handle 13, that is, towards the front of the hook 1. This hollow communicates with the handle. This first angled arm 104 and the hollow it forms are designed to receive the elastic cable. The hollow formed by the second angled arm 105 is designed to receive the clasp 15, according to the first embodiment of the hook 1.

[0038] The hook beak formed by the clasp 15, according to the first embodiment of the hook, can be folded and form a hook U so that it can be engaged by the hollow of the U around the bent branch 105 in the closing position of the loop 11.

[0039] Preferably, the attachment loop 11 and the connecting interface 10 are formed along the same geometric plane, but alternatively, they may be formed along two distinct geometric planes. Similarly, the connecting interface 10 may be formed along two intersecting geometric planes. One of these two planes will contain the longitudinal geometric axes of the first straight terminal branch 100 and the straight medial branch 103, while the second plane will contain the longitudinal geometric axes of the medial branch 103 and the second terminal branch 101.

[0040] In both embodiments of the hook, the second straight terminal arm 101 of the connecting interface 10 is extended rearward from the hook 1 by a retaining tail 106 designed to receive the elastic cable 20. This retaining tail 106 has a longitudinal geometric axis AA', parallel to the straight terminal and median arms 100, 101, and 103, and preferably intersecting the nose 11a of the attachment loop, particularly when said attachment point 11 is closed. In the first embodiment of the hook 1, this axis AA' also intersects the first angled arm 104. In the second embodiment, this axis AA' intersects the second angled arm 105.

[0041] Preferably, the restraint tail 106, according to the two embodiments of the hook 1, has a succession of non-contiguous turns, defining a housing for receiving an elastic cable 20, the geometric axis of revolution of said turns forming the longitudinal geometric axis AA' of said restraint tail 106. The spacing between two successive turns will be equal to or slightly greater than the diameter of the cable 20 intended to equip the hook 1 according to the invention. This arrangement facilitates the insertion of this cable into the axial housing formed by this succession of non-contiguous turns. This insertion will be carried out by winding the cable 20 around the restraint tail 106. Advantageously, the diameter of the housing is slightly smaller than the diameter of this elastic cable in order to constrain the latter within said housing. Preferably, the hollow formed by the second angled arm 105 is oriented towards the restraint tail.The S-shaped design of the connecting interface provides the necessary flexibility for manipulating the hook when opening and closing.

[0042] In figure 1 The hook loop 11, which is part of the hook 1, is shown in the open position. This figure shows that the clasp 15 is free from the hollow formed by the second bent arm 105 and is moved away from the connecting interface 10 to allow the opening 14 to open. The curved arm 110 is forced towards an open position of the loop 11 by its elasticity and, more generally, by the elasticity of the hook loop 11.

[0043] There figure 2Figure 11 shows the hook loop 11 of the hook 1 in the closed position. Closure is achieved by elastic deformation of the hook loop 11 and engagement of the clasp 15 in the hollow of the second angled arm 105. Preferably, in the closed position, the clasp 15, under the effect of the elasticity of the hook loop 11 and more particularly the elasticity of the curved arm 110, bears against the second angled arm 105. Due to this arrangement, the tensile force applied to the hook loop 11 will be absorbed partly by the clasp 15 and partly by the basal arm 12. Alternatively, the clasp 15, in the closed position of the loop 11, will bear against the second straight terminal arm 101 and will come against the angled terminal arm 105 under the effect of a strong tensile force.

[0044] It should be noted that the linking interface 10 and the loop 11 are sized so that they can fit in an adult's hand, which facilitates the handling of the hook and increases its ergonomics.

[0045] In figures 3 And 4 A flexible tensioner 2 is shown, consisting of an elastic cable 20, at each end of which a hook 1, according to the invention, is fixed by a knot or key. figure 3This illustrates one of the steps in attaching the elastic cable 20 to the connecting interface 10. As can be seen in this figure, the cable 20 is inserted transversely into the groove formed by the first bent branch 104, leaving a short slack strand beyond the groove. Next, this cable 20 is inserted transversely into the groove formed by the second bent branch 105, while simultaneously encircling the middle branch 103 or the first straight branch 100, and is then brought back into the groove formed by the first bent branch 104. Subsequently, as shown in the figure 4 , cable 20 is engaged in the containment tail 106.

[0046] In figure 4It can be observed that the knot or key formed by the cable 20, by its attachment to the connecting interface 10, creates a raised area in the recess formed by the second bent arm 105. It can be seen in this figure that the clasp 15, in the closed position of the attachment loop 10, is slightly compressed in the space between this raised area and the second straight arm 101. Thus, the raised area formed by the knot in the cable 20 helps to keep the clasp in the closed position. Furthermore, the clasp 15 is partially concealed by the knot or key formed by the cable and, for this reason, cannot tear the cover or net to which the hook is attached at its end.

[0047] Alternatively, the cable 20 is engaged transversely in the hollow formed by the first bent branch 104, leaving beyond said hollow a short dead strand, surrounds the first straight terminal branch 100, is brought back into the hollow formed by the first bent branch and is engaged in the restraint tail 106.

[0048] Alternatively, as shown in figure 5The elastic cable 20 remains engaged in the retaining tail 106 and is held in the hollow formed by the first bent arm 104, not by knotting, but by an annular reinforcement 21 provided at one of the two ends of the cable 20. This reinforcement is preferably formed by a metal ring crimped onto the cable 20, encircling said end, and designed to break under the effect of a significant tensile force of predetermined intensity applied to the cable 20. Advantageously, the metal ring is formed by a clip. As can be understood, the diameter of the elastic ring will be greater than the width of the hollow formed by the first bent arm 104. It is also understood that under the effect of the tensile force applied to the cable 20, the elastic ring will be firmly pressed against the bent arm 104.

[0049] Such a design proves particularly useful in situations where the element attached to the tensioner must be protected from excessive mechanical stress. This is notably the case for orchard covers extending over the plantings and fixed to posts by tensioners, which cannot withstand significant weight loads such as those due to snow, hail, or rain.

[0050] In figure 6 A hook 1 is shown in another embodiment. The cable 20 is attached to this hook as described previously, either by knotting or by an annular swell formed at the end of the cable.

[0051] According to this embodiment, the arched arm 110 of the fastening loop 11 is extended rearward, beyond the connecting interface 10 and the retaining tail 106 to cooperate in closing the fastening loop 11, with said retaining tail 106. According to this embodiment, the retaining tail 106 has, opposite the connecting interface 10, a free terminal zone 106a extending along a geometric plane normal or oblique to the longitudinal geometric axis AA', and having at its end a U-shaped curved retention beak 106b, the concavity of which is oriented towards the arched arm 110, said retention beak 106b being provided to receive the arched arm 110 in the closed position of the fastening loop 11.The closure of the attachment loop 11 is achieved by engaging the arched arm 110 in the retention beak 106b, this engagement being carried out under the effect of the internal elastic forces of this arched arm 110 and the latter is held in this beak 106b under the effect of these same forces.

[0052] The free end of the curved arm 110 is fitted with a clasp 15'. This clasp 15', when the curved arm 110 is engaged in the retaining beak 106b, is located behind and at a distance from this retaining beak 106b, outside the loop formed by the attachment loop 11. For illustrative purposes only, this distance is 5 mm. This arrangement creates a length buffer between the clasp 15' and the retaining beak 106b to allow free axial movement of the curved arm 110, relative to this retaining beak, under the effect of the elastic deformation of the hook 1 when the latter is subjected to tensile forces. As can be understood, the degree of elastic deformation of the hook 1 is proportional to the intensity of the tensile forces it experiences from both the cable and the object to which it is attached.It is also understood that the value of the displacement of the arched arm 110 relative to the retention beak 106b depends on the intensity of these forces. Thus, the hook 1 can withstand high, localized forces without risk of the clasp 15' coming to rest against the retention beak 106b, which could accidentally generate forces on the arched arm 110, pushing it towards the open position of the fastening loop 11.

[0053] Preferably, the clasp 15' is formed by a tab obtained by folding at a right angle, outwards from the loop 11, the terminal area of ​​the arched branch 110. Advantageously, this tab is extended at a right angle, backwards, by a second tab extending towards the rear of the hook.

[0054] According to this second embodiment, the longitudinal axis AA' is contained in a geometric plane containing the longitudinal median axes of the basal branch 12 and the arcuate branch 110, and the linking interface 10 develops along a geometric plane oblique to the geometric plane along which the longitudinal median axes of the basal branch 12 and the arcuate branch 110 develop. The longitudinal axis AA' is always secant to the loop nose 11a. Benefits of the invention

[0055] The hook as described offers the advantage of allowing quick and secure attachment of the 20mm elastic cable without the use of additional components such as staples or other fasteners. It allows for quick and easy adjustment of the elastic cable's usable length, as well as cable replacement. It can therefore be reused with a new cable, thus avoiding the disposal of a still-usable hook.

[0056] The hook, as described, is easily lockable and difficult to unlock without user intervention. This significantly increases the safety of use provided by this hook.

[0057] Finally, the hook as described can be fitted to any type of cable or rope, elastic or non-elastic.

[0058] It goes without saying that the present invention can receive all modifications and variants in the field of technical equivalents without departing from the scope of this patent as defined by the claims below.

Claims

1. Hook (1) for an elastic tensioner, made by bending a metal wire element of suitable cross-section, having on one side a connecting interface (10) designed to removably receive one of the end sections of an elastic cable (20), and, on the other side, a hooking loop (11) designed to be hooked onto an object, said loop (11) having a free end section and defining a loop (13) designed to receive said object by passing through an opening (14), the connecting interface (10) having first (100) and second (101) straight end branches and a straight middle branch (103), connected to the first straight end branch (100) by a first bent branch (104) and to the second straight branch (101) by a second bent branch (105), said bent branches (104, 105) forming two hollows opposite, the said terminal straight branches (100,101) and median (103) being parallel to the direction of the tensile force which both the loop (11) and the connecting interface (10) will have to withstand due to the action of the elastic cable (20), the first straight terminal branch (100) being extended by the attachment loop (11), and the first bent branch (104), determining a hollow oriented towards the loop (13), in communication relationship with the latter, said first bent branch (104) and the hollow which it forms being provided to receive the elastic cable as a fixing, characterized in thatthe width of the hollow formed by at least the first bent branch (104) is equal to or less than the diameter of the cable (20) intended to be fixed to the link interface (10) and that the second straight terminal branch (101) is extended by a restraint tail (106) intended to receive the elastic cable (20), said restraint tail (106) having a longitudinal geometric axis AA', parallel to the straight terminal branches (100, 101) and median (103).

2. Hook (1) according to the preceding claim, characterized in that The link interface forms an S.

3. Hook (1) according to claim 1 or claim 2, characterized in that the restraint tail (106) has a succession of non-contiguous turns, defining a housing provided to receive the elastic cable (20), the geometric axis of revolution of said turns forming the longitudinal axis AA' of said restraint tail (106).

4. Hook (1) according to the preceding claim, characterized in that the spacing between two successive turns is equal to or slightly greater than the diameter of the elastic cable (20) and the diameter of the housing is less than the diameter of this elastic cable in order to constrain the latter in said housing.

5. Hook (1) according to any one of the preceding claims, characterized in that the hook loop (11) has a basal branch (12) extending the first straight branch (100) of the linking interface (10) and the free terminal area of ​​the loop (11) is arranged as a clasp (15, 15').

6. Hook (1) according to the preceding claim, characterized in that the opening (14) of the loop handle (13) is closed by locking the clasp (15) in the hollow formed by the second bent arm (105).

7. Hook (1) according to claim 5 or claim 6, characterized in thatthe fastening loop (11) includes an elastic arched arm (110), the concavity of which is turned towards the basal arm (12), which this arched arm determines with the basal arm (12), the loop (13) of said loop and the free terminal area of ​​the arched arm (110) forms the free terminal area of ​​said loop (11) and is arranged as a clasp (15, 15').

8. Hook (1) according to any one of claims 5 to 7, characterized in that the clasp (15) is shaped into a hook.

9. Hook (1) according to claim 7, characterized in that the arched arm (110) of the hook loop (11) is extended rearward, beyond the link interface (10) and the restraint tail (106) and cooperates in closing the hook loop (11), with said restraint tail (106).

10. Hook (1) according to the preceding claim, characterized in thatthe restraint tail (106) has opposite the linking interface (10) a free terminal zone (106a) developing along a geometric plane normal or oblique to the longitudinal geometric axis AA', and comprising at the end a U-shaped curved retention beak (106b), the concavity of which is oriented towards the arched arm (110), said retention beak (106b) being provided to receive the arched arm (110) in the closing position of the hooking loop (11).

11. Hook (1) according to the preceding claim, characterized in that the clasp (15'), made at the end of the arched arm (110), is located behind and away from this beak (106b), when the arched arm (110) is engaged in this said retention beak (106b).

12. Tensioner (2) comprising an elastic cable (20) characterized in that said cable (20) is equipped with at least one hook (1) according to the preceding claims taken as a whole.

13. Tensioner (2) according to the preceding claim, characterized in that the cable (20) is engaged transversely in the hollow formed by the first bent branch (104) leaving beyond said hollow a short dead strand, then is engaged transversely in the hollow formed by the second bent branch (105) while surrounding the middle branch (103) or the first terminal straight branch (100), is brought back into the hollow formed by the first bent branch (104) and is then engaged in the retaining tail (106).

14. Tensioner (2) according to claim 12, characterized in that the cable (20) is engaged transversely in the hollow formed by the first bent branch (104) leaving beyond said hollow, a short dead strand, surrounds the first terminal straight branch (100), is brought back into the hollow formed by the first bent branch and is engaged in the retaining tail (106).

15. Tensioner (2) according to claim 12, characterized in that the cable (20) has at one of its ends an annular overthickness (21) of a diameter greater than the width of the hollow formed by the first bent branch (104) and is held in said hollow by said annular overthickness (21), which is capable of giving way under the effect of a tensile force of predetermined intensity exerted on said cable (20).