A fastening device comprising a fixing zone between two strands, a lanyard comprising such a fastening device, and a method for manufacturing such a fastening device

Abstract

A hooking device comprising a fastening zone between two strands, a lanyard comprising such a hooking device, and a method for manufacturing such a hooking device. A hooking device comprises a first strand of rope (2a, 2') and a second strand of rope (2b, 2'') fastened together by a stitching zone (5) and a binding zone (11) arranged adjacently along the longitudinal directions of the strands. First stitches (6a) successively pass through the first strand (2a, 2') and the second strand (2b, 2'') to hook securely and resting on the two strands (2a, 2') and to form the stitching zone (5). Second stitches (6b) go around at least one of the first strand (2a, 2') and the second strand (2b, 2'') and possibly cross the other of the first strand (2a, 2') and the second strand (2b, 2'') to hook the first strand (2a, 2') against the second strand (2b, 2'') and form the binding area (11).

Description

Title of the invention: ATTACHMENT DEVICE HAVING A FIXING ZONE BETWEEN TWO STRANDS, LANE HAVING SUCH AN ATTACHMENT DEVICE, AND METHOD FOR MANUFACTURED SUCH AN ATTACHMENT DEVICE technical field

[0001] The invention relates to a rope comprising a fixing zone between two strands and a manufacturing method, a lanyard comprising such a rope and a manufacturing method for such a rope. State of the art

[0002] In the field of mountaineering and acrobatic work, ropes are commonly used which are configured in the form of lanyards, for example adjustable lanyards.

[0003] An example of an adjustable lanyard is illustrated in Figures 1, 2, and 3. The adjustable lanyard 1 has a rope 2 that can be divided into a primary strand 2a and a secondary strand 2b. The primary strand 2a is attached to the secondary strand 2b to form a loop 3 for attaching to a harness. The primary strand 2a is attached to the secondary strand 2b by an attachment point 4, which is formed by a stitching area 5 with several stitches 6. The stitches are made using a sewing machine that joins two threads to form the stitches.

[0004] Each strand has a first end that is attached to the user, while the other end has a connector 7 for attaching to an anchor point. The connector 7 can be a carabiner, a ring, or a loop in the rope suitable for receiving a carabiner or any other object. The primary strand 2a is a fixed strand, while the secondary strand 2b is an adjustable strand. In the illustrated embodiment, the primary strand 2a terminates with a fixed connector, while the secondary strand 2b terminates with a movable connector, thus defining an adjustable strand.

[0005] The adjustable arm has a connector 7 attached to an adjustment device 8. The adjustment device 8 is movably mounted between a sliding position and a locking position. The adjustable arm terminates in a limit stop that defines a maximum accessible position for the adjustment device 8.

[0006] In the sliding position, the adjustment device 8 is able to slide along the secondary strand 2b in one direction or the other. In the position of As illustrated in Figures 1 to 3, the adjustment device 8 is fixedly mounted relative to the secondary strand 2b. The secondary strand 2b is divided into a main strand 2' and a terminal strand 2" which is folded and sewn onto the main strand 2' to form the end stop. The stitching of the main strand 2' to the terminal strand 2" forms a fastening area 4.

[0007] During its use, when the adjustment device 8 is against the end stop, the adjustment device 8 applies a force to the fastening area 4. The force applied to the end stop by the adjustment device 8 has the effect of applying a force to the peeling between the two strands 2a / 2b fixed to each other. The stitches 6 are arranged successively along the longitudinal direction of the strands. The force applied by the adjustment device 8 and the tension in the sewing thread cause the stitches of the seams 6 to work on the peeling one after the other. The resistance provided by the sewing area 5 is not as great as expected. In order to increase the mechanical performance of the sewing area 5, the number of stitches 6 that form the sewing area 5 is increased and / or the diameter of the sewing threads is increased, which has an influence.However, this weakens the rope, which is crossed by multiple stitching points. The formation of a longer attachment zone increases the bulk.

[0008] A similar problem arises at the attachment ring 3, which is formed by the primary strand 2a and the secondary strand 2b of the rope. These two strands are joined together by a stitching area 5 to define a ring. When the two strands exiting the ring are directed in opposite directions, the stitches 6 that close the ring are also subjected to peeling, resulting in the same degradation of mechanical performance. The same occurs when force is applied inside the loop 3, which seeks to increase the circumference of the loop 3.

[0009] The primary strand 2a illustrates a connector 7 defining a fastening hole 9 intended to receive a carabiner and which is formed by folding the terminal strand over the main strand. In this case, the two strands are subjected to a substantially homogeneous stress, so that the seams behave differently from the previous cases. On the other hand, if the diameter of the fastening hole is smaller than the diameter of the carabiner it is intended to receive, the carabiner applies stress to the strand.

[0010] It is known to cover the attachment area 4 with a cover 10 made of polymer material, as illustrated in [Fig. 1]. The cover 10 does not significantly increase the breaking strength of the attachment area 4, and in particular its resistance. The cover 10 protects the stitching points 6 from external damage.

[0011] Finally, it is known to join the two strands together by means of a metal crimp. This operation is complex and costly. Description of the invention

[0012] An object of the invention is to overcome these disadvantages, and more particularly to provide a hooking device whose fixing zone between two strands provides better compromises between bulk and resistance to breakage when the two strands seek to move away from each other.

[0013] These drawbacks are addressed by means of a fastening device comprising: - a first strand of rope and a second strand of rope; - a fastening zone comprising at least two stitching threads joining together without forming a knot to form a plurality of stitching points, in which the first strand has a longitudinal direction parallel to a longitudinal direction of the second strand and in which the first rope strand is offset from the second rope strand in a direction perpendicular to the longitudinal directions; in which the fixing zone includes a stitching zone formed by a plurality of stitches achieving the fixing of the first strand in support on the second strand, each stitch consisting of two first stitches, the first stitches being two consecutive stitches of the plurality of stitches, in which one of the stitching threads of one of the first stitches passes through the first strand and one of the stitching threads of the other of the first stitches passes through the second strand.

[0014] The hooking device is remarkable in that the fixing zone comprises a ligature zone arranged adjacent to the sewing zone along the longitudinal directions and formed by a plurality of ligatures achieving the fixing of the first strand in support of the second strand, each ligature being constituted by two or three second stitches, the second stitches being two or three consecutive stitches of the plurality of stitches, in which one of the stitching threads of one of the second stitches goes around one of the first strand and the second strand while being supported on an external lateral edge of said one of the first strand and the second strand gone around; and one of the stitching threads of another of the second stitches goes around the other of the first strand and of the second strand resting on an external lateral edge of said other of the first strand and of the second strand gone around or passes through the other of the first strand and of the second strand.

[0015] According to one aspect of the invention, the second stitching points comprise stitching points going around the first strand and stitching points going around the second strand.

[0016] Preferably, the stitching around the first strand and the stitching around the second strand are arranged alternately along the longitudinal directions of the stitching threads.

[0017] In a particular embodiment, the stitches passing through each other of the first strand and the second strand are stitches passing through the space between the first strand and the second strand.

[0018] Advantageously, in which the sewing zone and the ligature zone are formed by the same threads extending continuously from the sewing zone to the ligature zone.

[0019] In a particular embodiment, an additional ligature zone adjacent to the stitching zone, the additional ligature zone and the ligature zone being separated by the stitching zone along the longitudinal directions of the first strand and the second strand.

[0020] Preferably, the first and second strands each have a core and a sheath. In the binding zone, the second stitches pass through the sheath of the other strand of the first and second strands without passing through the core.

[0021] In another development, the hooking device includes an adjustment device configured to slide along the first strand to the fixing area forming an end stop, the binding area being disposed between the sewing area and a slider of the adjustment device and the second stitches bypassing the second strand.

[0022] Advantageously, the first strand and the second strand form a loop which is closed by the fixing zone and in which the ligature zone is disposed closer to the loop than the sewing zone in the longitudinal directions to oppose the opening of the loop.

[0023] The invention also relates to a lanyard that offers a better compromise between its mechanical performance and its size. This result is achieved by means of a lanyard that has an attachment device according to any one of the preceding configurations.

[0024] In a preferred embodiment, the first and second strands each have a connecting element. The binding zone is positioned closer to the connecting elements than the stitching zone along the longitudinal directions of the first and second strands to prevent the two connecting elements from separating.

[0025] Preferably, the attachment device has a first end having an attachment point intended to be fixed to a user and at least a second end having an anchor point intended to be fixed to an anchor.

[0026] It is advantageous that the attachment device intervenes to form an adjustable lanyard in which the slider forms the anchor point, the slider being mobile between a locking position and a sliding position, the slider being fixed relative to the first strand in the locking position and being free to move along the first strand in the sliding position.

[0027] Preferably, the attachment point is separated from the anchor points by the fixing zone.

[0028] The invention also relates to a method for manufacturing a hanging device that is simple to implement and that improves the mechanical performance of the rope without increasing its size. This problem is addressed by means of a method for manufacturing a rope according to any one of the preceding configurations comprising the following steps: - the provision of a first strand and a second strand; - the fixing of the first strand in contact with the second strand, the first strand having a longitudinal direction parallel to a longitudinal direction of the second strand; wherein the fixing step includes a sewing step using at least two sewing threads defining first stitches passing successively through the first strand and the second strand to fix the first strand with the second strand.

[0029] The process is remarkable in that prior to or subsequent to the sewing step, the process includes a ligation step which fixes the first strand in support against the second strand, the ligation being formed by at least two threads linked to each other to define second stitches, each ligation going around at least one of the first and second strands and tying to the other of the first and second strands, the ligation area being arranged adjacent to the sewing area along the longitudinal directions of the first and second strands.

[0030] Preferably, the binding step and the sewing step are carried out using the same sewing machine, with the sewing threads extending continuously between the binding step and the sewing step. Description of the drawings

[0031] Other advantages and features will become clearer from the following description of particular embodiments and implementations of the invention given by way of non-limiting examples and shown in the accompanying drawings, in which:

[0032] [Fig.l]: schematically illustrates a lanyard according to the prior art whose attachment area is covered by a hood;

[0033] [Fig.2]: schematically illustrates the lunge line according to the prior art, the area of ​​which the fixing is without a cover;

[0034] [Fig.3]: schematically illustrates an adjustment element supported on a terminal strand according to the prior art;

[0035] [Fig.4]: schematically illustrates a lanyard according to a first embodiment whose mounting area is devoid of a cover;

[0036] [Fig.5]: schematically illustrates a strand of rope receiving an adjustment element resting on a terminal strand;

[0037] [Fig.6]: schematically illustrates a fastening device according to a second embodiment provided with a loop attachment area and whose two strands are separated from each other outside the loop;

[0038] [Fig.7]: schematically illustrates a hanging device according to a third embodiment provided with a loop attachment area and whose two strands are separated from each other in the loop;

[0039] [Fig.8]: schematically illustrates a fastening device according to a fourth embodiment provided with a loop attachment zone and whose two strands are separated from each other in the loop and out of the loop;

[0040] [Fig.9]: schematically illustrates a fixation zone equipped with a first mode of creation of the ligature zone;

[0041] [Fig. 10]: schematically illustrates a fixation zone provided with a second embodiment of the ligature zone;

[0042] [Fig. 11]: schematically illustrates a fixation zone provided with a third embodiment of the ligature zone;

[0043] [Fig. 12]: schematically illustrates a fixation zone provided with a fourth embodiment of the ligature zone;

[0044] [Fig. 13]: schematically illustrates a fixation zone provided with a fifth embodiment of the ligature zone;

[0045] [Fig. 14]: schematically illustrates a fixation zone provided with a sixth embodiment of the ligature zone;

[0046] [Fig. 15]: schematically illustrates a fixation zone provided with a seventh embodiment of the ligature zone. Detailed description

[0047] Figure 4 represents an attachment device having at least a first strand and a second strand. The attachment device may be a lanyard 1 as illustrated in Figure 4.

[0048] The first and second strands have a length that is greater than their width and greater than their thickness. Preferably, the length is at least five times, or even at least ten times, greater than the width and thickness. In a particular embodiment, the first and / or second strand have a circular or substantially circular cross-section.

[0049] The attachment device has a fastening zone 4 where the first strand has a longitudinal direction parallel to a longitudinal direction of the second strand. In the fastening zone 4, the first strand is fixedly mounted against the second strand. The fastening zone 4 is formed by a plurality of stitches 6. By stitches, we mean stitches formed by a sewing machine, that is, with two threads that interlock to secure a portion of the first and second strands. Two consecutive stitches are joined by the two threads.

[0050] In the attachment zone 4, the first strand may be in direct contact with the second strand, or the first strand may be separated from the second strand by an intervening element. The stitching points 6 apply a compressive force from the first strand towards the second strand and from the second strand towards the first strand. The first and second strands each have an inner face that is in contact or directly opposite in a direction perpendicular to the longitudinal direction of the strands, and an outer face that is opposite the inner face in said perpendicular direction.

[0051] In the attachment zone 4, the first strand and the second strand deform identically along the longitudinal direction of the strands until the stitch points 6 or one of the strands break.

[0052] The attachment zone 4 includes a stitching zone 5 formed by the first stitches 6a of the plurality of stitches 6. The first stitches 6a pass successively through the first strand and the second strand to secure themselves against the second strand. In other words, the sewing machine needle passes through the first strand or through the second strand to pass the thread, which is then trapped in the strand. The passage of the thread through the strand fixes the thread's position along the longitudinal direction of the strand. A seam is formed by two successive stitches that pass through the first and second strands, respectively. The stitch passes through both the first and second strands, and the tension applied to the two threads secures the first strand to the second strand. The stitch that passes through the strand weakens the strand.It has been observed that this weakening of the strand facilitates strand breakage. This degradation is noticeable when the attachment zone is subjected to shedding, that is, with a force that tends to separate the two strands perpendicularly to the longitudinal direction.

[0053] In order to improve resistance to peeling when the first and second strands are subjected to forces that tend to separate the first and second strands, the fixing zone 4 includes a ligature zone 11 where the first strand has a longitudinal direction parallel to a longitudinal direction of the second strand and where the first strand is fixedly mounted in support on the second strand.

[0054] The binding zone 11 is formed by several bindings formed one after the other along the longitudinal direction of the strands. The binding zones are preferably supported against each other along the longitudinal direction of the strands. The binding is formed by two consecutive stitches, one stitch going around the first strand and the other stitch passing through or around the second strand. The reverse is also possible. Alternatively, the binding is formed by three consecutive stitches, one stitch going around the first strand, one stitch passing between the first and second strands, and the last stitch going around the second strand.

[0055] In a seam, a sewing thread passes through the first and second strands, preferably by passing through the strand along a diameter of the strand, that is, to have maximum interaction with the strand. In a ligature, the bond between the two strands has weak interaction with at least one of the strands to avoid degrading mechanical performance along the longitudinal direction of the strands, and preferably to avoid degrading mechanical performance along the longitudinal direction of the strands. It is therefore advantageous not to pass through the strand(s) or to limit the passage through the strand(s).

[0056] By going around a strand, we mean that the sewing threads go around the outer face of the strand without penetrating the strand. It is also possible for the sewing thread to penetrate the periphery of the strand, for example, over a distance that corresponds to less than 33% of the strand's diameter. The thread penetrates the outer part of the strand and not the inner part.

[0057] The ligatures are formed by second stitches 6b from the plurality of stitches 6. The second stitches 6b are formed identically to the first stitches, but in pairs of two consecutive second stitches 6b, at least one of the second stitches 6b goes around at least one of the first and second strands. The tension force applied to the stitching threads presses the two strands against each other in a direction perpendicular to the longitudinal direction. The less the stitching thread is inserted into the strand, the more the stitching thread is able to move along the longitudinal direction of the thread in order to homogenize the tension in the thread.Since the tension in the sewing thread is more homogeneous between the multiple second stitches 6b, the mechanical behavior of the second stitches 6b is different from the mechanical behavior of the first stitches 6a with respect to a predefined force which tends to separate the first strand and the second strand.

[0058] The portion of the stitching thread that goes around the strand prevents the strand from becoming weakened. When stress is applied to the fur, the ligature maintains the force that seeks to press the two strands together without a stitch passing through the central part of the strand and applying stress along its longitudinal direction. Displacement of the ligature along the longitudinal direction of the strands is prevented by having a second stitch 6b that passes through the other strand or by resting against the stitching area 5. It is particularly advantageous for the ligatures to be placed against each other along the longitudinal direction of the strands and, if necessary, for an end ligature to rest against a stitch in the stitching area 5.

[0059] The attachment zone 4 includes at least one binding zone 11 which is arranged adjacent to the stitching zone 5 along the longitudinal directions of the strands. In the binding zone 11, the stitches 6 are predominantly or exclusively second stitches 6b. In the stitching zone 5, the stitches 6 are predominantly or exclusively first stitches 6a. Advantageously, the binding zone 11 is devoid of a first stitch 6a.

[0060] It is particularly advantageous that the second stitches 6b be at least five consecutive second stitches 6b in the longitudinal direction of the stitching threads so as to have significant links between the first strand and the second strand.

[0061] The second stitching points 6b are arranged one behind the other in the longitudinal direction of the stitching threads.

[0062] The threads forming the first stitches 6a and the second stitches 6b are threads that are subjected to a tensile force in order to press the first strand against the second strand in a direction perpendicular to the longitudinal direction of the strands. The threads compress the strands.

[0063] The seams of the sewing area 5 are arranged one behind the other along the longitudinal direction of the strands. Preferably, the first stitches 6a are made alternately in the first strand and in the second strand.

[0064] The ties in the tying zone 11 are arranged one behind the other along the longitudinal direction of the strands. Preferably, the tying zone 11 has at least five ties. Preferably, the second stitches 6a are made alternately in the first strand and around the second strand. The around-the-way stitching is carried out around the outer face of the strand, that is, the face opposite the inner face. The inner face of the first strand is directly opposite the inner face of the second strand. It is also possible to provide several groups of three second stitches 6b which include a bypassing the first strand, a second stitch 6b formed between the inner faces of the strands and a bypassing of the second strand.

[0065] It is particularly advantageous for the first and / or second strand to have a core and a sheath with different mechanical properties. The sheath is preferably a braided or knitted material around the core. The core is preferably formed by yarns extending parallel or substantially parallel to each other. It is particularly advantageous for the first and second strands to have the same configuration with a core and a sheath. More advantageously, the sheaths of the first and second strands are identical, and the cores of the first and second strands are identical. Advantageously, the first and second strands belong to the same rope.

[0066] In an advantageous configuration, the first strand is extended by the second strand. More advantageously, the core of the first strand is extended by the core of the second strand and / or the sheath of the first strand is extended by the sheath of the second strand.

[0067] In an alternative embodiment, the first strand and the second strand belong to two different cords. It is also possible that the two cords have different characteristics. For example, the two strands differ from each other in diameters, different materials forming the sheath, different materials forming the core, different braiding or knitting patterns for forming the sheaths, or a different number of strands forming the core.

[0068] When the first and second strands have a core and sheath structure, the second stitches 6b that go around the first or second strand are second stitches 6b that do not pass through the core of the first or second strand. Preferably, the stitching thread passes through the outer half of the sheath thickness, and even more preferably, it does not pass through the sheath.

[0069] It is advantageous for the second set of stitches 6b to bypass at least one of the core of the first strand and the core of the second strand, and preferably one of the sheath of the first strand 6a and the sheath of the second strand. Bypassing the sheath, that is, avoiding the passage through the thickness of the first and / or second strand, prevents weakening the strand.

[0070] Different configurations of second stitches 6b are made to form the ligatures best suited to the needs. In the embodiment illustrated in [Fig. 4], three distinct and different attachment zones are formed to meet different stresses.

[0071] Figure 4 illustrates a lanyard 1 having a first end intended to be attached to a harness and two second ends intended to be attached to an anchor point. The lanyard 1 is formed from a single rope which is folded several times to define the different expected functions, here a ring that forms a loop, another ring that forms a connector 7, and an end stop.

[0072] The rope has a primary strand 2a and a secondary strand 2b which are attached to each other by a fastening zone 4. The primary strand 2a forms the first strand, while the secondary strand 2b forms the second strand. In the illustrated embodiment, the primary strand 2a extends the secondary strand 2b such that the fastening zone 4 defines a hanging loop 3 or a loop for receiving a connector 7.

[0073] Since the attachment ring can be subjected to a force aimed at separating the first and second strands inside the attachment ring 3, it is advantageous that the attachment area 4 has a ligature area 11 disposed between the attachment ring 3 and the stitching area 5. In other words, the ligature area 11 is disposed inside the attachment ring 3 closed by the stitching area 5.

[0074] At the exit of the attachment zone 4, inside the attachment ring 3, there is a free zone where it is possible to move the first and second strands independently of each other to apply the force intended to separate the two strands. It is advantageous to form second stitches 6b that bypass the first and second strands. In the free zone, the two strands are not bound to each other.

[0075] In a particular embodiment, the second stitches 6b have at least one second stitch 6b where the two threads that form the second stitches overlap the first and second strands simultaneously. In other words, the two threads that form the consecutive second stitches 6b meet at two attachment points that are separated by the first and second strands.

[0076] In another particular embodiment, the second stitches 6b have at least one second stitch 6b where the two threads forming the second stitches 6b overlap only the first strand and only the second strand at a time. The second stitches 6b have links between the two stitching threads located between the first and second strands. Preferably, the second stitches 6b have an alternation between a link that overlaps the first strand and a link that overlaps the second strand. The alternation of second stitches 6b between the first and second strands allows the stitches to work more effectively. When making the second stitches 6b, the needle passes between the two strands without penetrating inside the The strands are positioned so that their mechanical performance is not degraded along their longitudinal direction. The needle may penetrate the circumference of the strand, for example, less than 10% of its diameter, thus limiting mechanical degradation. The stitching threads are held between the first and second strands, which helps maintain the position of the second stitches when force is applied that tends to separate the first and second strands.

[0077] In another particular embodiment, the second stitches have at least one stitch where the two threads forming the second stitches overlap both the first and second strands simultaneously. The second stitches have connections between the two stitches located between the first and second strands. In other words, the two threads forming the second stitches meet at two attachment points separated by the first and second strands. Here again, it is advantageous to alternate a stitch around the first strand and a stitch around the second strand. Using two threads that meet to define each tie allows for better management of the stresses along the ties, resulting in a more evenly distributed work area.

[0078] In another particular embodiment, the second stitches 6b have at least one second stitch 6b in which the two threads forming the second stitches 6b pass through one of the first and second strands and around the other of the first and second strands. Preferably, the thread or threads passing through one of the first and second strands pass substantially through the center of the strand. The threads leaving the strand overlap the other of the first and second strands and bind together on the outside of the other strand so as to securely attach the first strand to the second strand. Here again, it is advantageous to alternate a binding around the first strand and a binding around the second strand. In other words, there is an alternation between a binding that passes through the first strand and binds against the second strand and a binding that passes through the second strand and binds against the first strand.

[0079] In the embodiment illustrated in [Fig. 4], there is also a configuration where an element is able to slide along a main strand 2' and where an end strand 2" is attached to the main strand 2' to form an end stop. The end stop is formed by a first strand and a second strand attached to each other by a fastening zone 4. The binding zone 11 is located between the sliding element 8 and the stitching zone 5. The binding zone 11 provides better resistance to the forces applied by the sliding element bearing against the fastening zone compared to a fastening zone 4 having only a single stitching zone 5.

[0080] The sliding element 8 generates a force on the terminal strand 2' which tends to separate the main strand 2' and the terminal strand 2”. In order to improve the peel resistance performance of the attachment zone 4, the attachment zone 4 has a binding zone 11. The binding zone 11 is disposed between the stitching zone 5 and the sliding element 8 along the longitudinal direction of the main strand 2'.

[0081] The ligature zone 11 may have second stitching points 6b which go around the main strand 2'.

[0082] Figures 9 to 15 illustrate different embodiments of a fixation zone 4 with multiple configuration variants of the ligation zone IL

[0083] Figures 9 and 10 illustrate a binding zone 11 where the second stitches 6b penetrate the first strand and pass around the second strand. The first strand can be a primary or secondary strand. The first strand is preferably a terminal strand 2”. The second strand is formed by the other strand. In Figure 9, the stitching thread passes through the core, whereas in Figure 10, the stitching thread passes through the sheath.

[0084] Figures 11 and 12 illustrate a binding zone 11 where the second stitches 6b do not penetrate the first or second strand. The stitches pass around the outer faces of the first and second strands. The first strand can be a primary or secondary strand. The first strand is preferably a terminal strand 2”. The second strand is formed from the other strand. Figure 11 illustrates an overlap of the two strands, while Figure 12 illustrates the creation of a stitch between the two strands.

[0085] Figures 13, 14, and 15 illustrate a binding zone 11 where the second stitches 6b penetrate alternately into the first strand and then into the second strand. The stitching threads alternately skirt around the outer faces of the second and first strands. Depending on the configuration, the stitching threads penetrate through both cores ([Fig. 13]), both sheaths without the cores ([Fig. 15]), or a single core ([Fig. 14]). The first strand can be a primary or secondary strand. The first strand is preferably a terminal strand 2”. The second strand is formed from the other strand.

[0086] It is also advantageous to have a rope harness having a lanyard such as that illustrated in one of the preceding embodiments.

Claims

1. Demands Hanging device (1) comprising: - a first strand of rope (2a, 2') and a second strand of rope (2b, 2”); - a fastening zone (4) comprising at least two stitching threads joining together without forming a knot to form a plurality of stitching points (6), in which the first strand (2a, 2') has a longitudinal direction parallel to a longitudinal direction of the second strand (2b, 2”) and in which the first rope strand (2a, 2') is offset from the second rope strand (2b, 2”) in a direction perpendicular to the longitudinal directions;in which the fixing zone (4) includes a sewing zone (5) formed by a plurality of seams achieving the fixing of the first strand (2a, 2') in support on the second strand (2b, 2”), each seam being made up of two first stitches (6a), the first stitches being two consecutive stitches of the plurality of stitches, in which one of the stitching threads of one of the first stitches passes through the first strand (2a, 2') and one of the stitching threads of the other of the first stitches passes through the second strand (2b, 2”); characterized in that the fixing zone (4) comprises a ligature zone (11) disposed adjacent to the sewing zone (5) in the longitudinal directions and formed by a plurality of ligatures realizing the fixing of the first strand (2a, 2') in support of the second strand (2b, 2”), each ligature being constituted by two or three second stitches (6b), the second stitches (6b) being two or three consecutive stitches of the plurality of stitches, in which one of the stitching threads of one of the second stitches (6b) goes around one of the first strand (2a, 2') and of the second strand (2b,2”) by being in support of an external lateral edge of said one of the first strand (2a, 2') and of the second strand (2b,2”) gone around; and one of the stitching threads of another of the second stitches (6b) goes around the other of the first strand (2a, 2') and of the second strand (2b,2”) resting on an external lateral edge of said other of the first strand (2a, 2') and of the second strand (2b,2”) gone around or crosses the other of the first strand (2a, 2') and of the second strand (2b,2”).

2. Hanging device according to claim 1 in which the second stitching points (6b) comprise stitching points around the first strand (2a, 2') and stitching points around the second strand (2b, 2”).

3. Hanging device according to the preceding claim in which the stitching points around the first strand (2a, 2') and the stitching points around the second strand (2b, 2”) are arranged alternately along the longitudinal directions of the stitching threads.

4. Hanging device according to claim 2 wherein the stitching points passing through each other of the first strand (2a, 2') and of the second strand (2b, 2”) are points passing through the space between the first strand (2a, 2') and the second strand (2b, 2”).

5. Hanging device (1) according to any one of the preceding claims wherein the stitching area (5) and the binding area (11) are formed by the same threads extending continuously from the stitching area (5) to the binding area (11).

6. Attachment device (1) according to any one of the preceding claims comprising an additional ligature zone adjacent to the stitching zone (5), the additional ligature zone (11) and the ligature zone (11) being separated by the stitching zone (5) along the longitudinal directions of the first strand (2a, 2') and the second strand (2b, 2”).

7. Hanging device (1) according to any one of the preceding claims wherein the first strand (2a, 2') and the second strand (2b, 2”) each have a core and a sheath and wherein in the binding area (11), the second stitches (6b) pass through the sheath of the other of the first strand (2a, 2') and the second strand (2b, 2”) without passing through the core.

8. A hooking device (1) according to any one of the preceding claims comprising an adjustment device (8) configured to slide along the first strand (2a, 2') to the fixing zone (4) forming an end stop, the binding zone (11) being disposed between the stitching zone (5) and a slide of the adjustment device (8) and the second stitches (6b) bypassing the second strand (2b, 2”).

9. Attachment device (1) according to any one of claims 1 to 6 wherein the first strand (2a, 2') and the second strand (2b, 2”) form a loop (3) which is closed by the fixing zone (4) and in which the ligature zone (11) is disposed closer to the loop (3) than the sewing zone (5) in the longitudinal directions to oppose the opening of the loop (3).

10. Attachment device (1) according to any one of claims 1 to 6 wherein the first strand (2a, 2') and the second strand (2b, 2”) each have a connecting element (7) and wherein the ligature zone (11) is disposed closer to the connecting elements (7) than the stitching zone (5) along the longitudinal directions of the first strand (2a, 2') and the second strand (2b, 2”) to oppose separation of the two connecting elements (7).

11. Lanyard comprising an attachment device (1) according to any one of the preceding claims, the attachment device (1) having a first end having an attachment point intended to be fixed to a user and at least a second end having an anchor point intended to be fixed to an anchor.

12. Lanyard according to claim 11 wherein the rope attachment device depends on claim 8 to form an adjustable lanyard in which the adjustment device (8) forms the anchor point, the adjustment device (8) being movable between a locking position and a sliding position, the adjustment device (8) being fixedly disposed relative to the first strand (2a, 2') in the locking position and being free to move along the first strand (2a, 2') in the sliding position.

13. Lanyard according to claim 11 comprising an attachment device (1) according to claim 10 and wherein the attachment point is separated from the anchor points by the attachment area (4).

14. Method of manufacturing a hooking device (1) according to any one of the preceding claims comprising the following steps: - supplying a first strand (2a, 2') and a second strand (2b, 2”); - fixing the first strand (2a, 2') in contact with the second strand (2b, 2”), the first strand (2a, 2') having a longitudinal direction parallel to a longitudinal direction of the second strand (2b, 2”); in which the fixing step includes a sewing step using at least two sewing threads defining first stitches (6a) passing successively through the first strand (2a, 2') and the second strand (2b, 2”) to fix the first strand (2a, 2') with the second strand (2b, 2”); characterized in that prior to or subsequent to the sewing step, the process includes a ligation step which fixes the first strand (2a, 2') against the second strand (2b, 2”), the ligation being formed by at least two threads tied together to define second stitching points, each ligation going around at least one of the first strand (2a, 2') and the second strand (2b, 2”) and tying to the other of the first strand (2a, 2') and the second strand (2b, 2”), the ligation zone (11) being arranged adjacent to the sewing zone (5) along the longitudinal directions of the first strand (2a, 2') and the second strand (2b, 2”).

15. A method for manufacturing a rope according to the preceding claim, wherein the binding step and the sewing step are carried out using the same sewing machine, the sewing threads extending continuously between the binding step (11) and the sewing step (5).

Images