Device for adjusting a wire element and harness provided with such an adjustment device

Abstract

A device (1) for adjusting a length of a wire element (2) comprises a wire element (2), a body (4) and a locking element (5) mounted to move between a locking position and an unlocking position of the wire element (2). The body defines a first slot (9) and a second slot (10) intended for the passage of the wire element (2). The slots are separated by the support wall (7). The locking element (5) is mounted to pivot relative to the body (4) around a pivot shaft (11) to move towards or away from the support wall (7). The locking element (5) has a support wall (12) moving towards or away from the support wall (7). The two strands passing through a second slot (10) are separated by a support wall (12) and join by going around the pivot axis of the support wall (12) formed by the body (4).

Description

Technical field

[0001] The invention relates to a device for adjusting a wire element and to a rope harness provided with such an adjustment device. Prior art

[0002] To adjust the length of a strap, and more generally of a wire element, it is common to use an adjustment buckle. Over the years, many different configurations of adjustment buckles have been developed.

[0003] Conventionally, the adjustment buckle has two rings of approximately rectangular shapes mounted on top of each other and of different sizes. The smaller ring moves relative to the larger ring to clamp the strap thicknesses and thus ensure the chosen length is locked.

[0004] This solution gives good results in maintaining the chosen length even when the tensile forces applied to the strap increase. By moving the two rings relative to each other, it is easy to loosen the buckle and change the adjustment. However, it is noted that this configuration also results in a significant reduction in the mechanical performance of the strap.

[0005] While the strap is measured to provide an initial breaking strength value when used alone and stretched in its longitudinal direction, it is found that the addition of an adjustment buckle results in a division by two or three when the assembly is subjected to the same longitudinal force. The breakage occurs at much lower values ​​and it does not come from the breakage of the adjustment buckle. In order to be able to withstand the expected forces, the solution is to replace the strap with a thicker and / or wider strap.

[0006] This technical choice is not satisfactory because the increase in the section of the strap leads to a deterioration in the general ergonomics.

[0007] Document US 2023 / 0065262 discloses a roping harness provided with a connector intended to be attached on the one hand to the belt and on the other hand to a leg loop by means of two straps adjustable in length. The connector defines two rings in addition to the two slots which receive the adjustable straps. The connector allows the attachment of a cam locking device which makes it possible to adjust the length of a rope connecting the right connector with the left connector. The cam lock defines a hole for the passage of a strand of rope. The hole is delimited by a pivoting cam actuated by a spring to jam the rope. The cam pinches the rope against the body of the connector. As indicated above, pinching the rope is detrimental to obtaining high strength.

[0008] US 2017 / 0291047 discloses a roping harness with a connector attached to the belt. The connector is pivotally mounted around the belt by means of a rod. The connector has a first portion defining a closed ring and a second portion defining a "C". The first portion and the second portion are pivotally mounted around the rod. The "C"-shaped portion allows for the installation of a tool.

[0009] Document US 2016 / 0361577 discloses a rope harness provided with a dorsal attachment point. The attachment point is attached to the intersection of the two shoulder straps. The dorsal attachment point has two rings mounted movably around a single rod which is attached to a plate fixed to the shoulder straps. One of the rings is non-openable while the other ring is C-shaped. The non-openable ring is intended to receive a carabiner while the other ring receives a fall absorber intended to be attached to a lifeline.

[0010] US 2017 / 0120087 discloses a roping harness that has a connector attached to a belt. The connector has a first ring and a second ring that are pivotally mounted independently of each other around a single shaft. The connector is attached to a belt strap by means of an adjustment buckle formed by two rings arranged one on top of the other. The two rings pinch the strap.

[0011] EP 3307399 discloses a roping harness provided with a strap for connecting the front parts of the shoulder straps. A connector is attached to the connecting strap by means of a plate which defines several slots crossed by the connecting strap. The connector is pivotally mounted around one end of the connector. The end of the connector is fixed to the plate by means of the strap. Subject of the invention

[0012] An object of the invention is to provide an adjustment device which ensures good maintenance of the chosen length, which provides an improvement in breaking strength compared to configurations of the prior art which use equivalent wire elements while being simple to use and in particular easy to adjust.

[0013] This result is tended to be achieved by means of an adjustment device configured to adjust a length of wire element comprising: a wire element; a body having at least a first wall, a support wall and a second wall arranged to define at least a first slot and a second slot intended for the passage of strands of the wire element, the first slot being delimited at least by the first wall, the second slot being delimited at least by the second wall, the second slot being distinct and separated from the first slot by the support wall; a blocking element mounted movably between a blocking position and an unlocking position, the blocking element being fixed to the body and mounted movably to pivot relative to the body around a pivot shaft to move closer to or away from the support wall, the pivot shaft being arranged closer to the first wall than to the second wall and closer to the first wall than to the support wall in a first direction which passes successively through the first wall, the support wall and the second wall;wherein the blocking element has a support wall moving towards or away from the bearing wall; ; wherein a first strand of the wire element passes through the second slot and extends along a first face of the support wall to bypass the first wall; wherein a second strand of the wire element passes through the second slot and extends along a second face of the support wall and passes through the first slot to bypass the first wall and is extended by the first strand: wherein in the locking position, the first strand applies a force on the support wall in the direction of the bearing wall and the second strand is wedged between the support wall and the bearing wall; and wherein in the unlocking position, the support wall defines a functional clearance with the bearing wall to allow sliding of the second strand.

[0014] According to one aspect of the invention, the second face of the support wall is provided with pins intended to be inserted into the wire element.

[0015] Advantageously, the blocking element defines a through hole for the passage of the bearing wall, a height of the bearing wall being less than a height of the through hole in the direction of pivoting of the blocking element so as to constrain the pivoting of the blocking element to a predefined angular range.

[0016] In a particular configuration, the first direction of the body is curved.

[0017] In an advantageous development, the handle is pivotally mounted about a second pivot shaft extending parallel to the first pivot shaft.

[0018] Preferably, the blocking element is pivotally mounted around the first wall.

[0019] According to one embodiment, the support wall is devoid of a sharp edge in a contact zone with the wire element.

[0020] In an advantageous development, the blocking element is devoid of a sharp edge in a contact zone with the wire element.

[0021] Preferably, the support wall has a circular section and / or the blocking element defines a bypass zone by the wire element whose external face is a portion of a circular arc.

[0022] In a further advantageous development, the body is pivotally mounted relative to a support around an additional pivot shaft.

[0023] Preferably, the second wall forms the additional pivot shaft.

[0024] Il It is advantageous to provide that the body defines a hooking ring distinct from the first slot and the second slot.

[0025] Preferably, the blocking element is formed by an internal part and an external part each pivotally mounted around the first wall, the external part being mounted to move relative to the internal part with limited functional play, the internal part and the external part being separated by the support wall.

[0026] The invention also relates to a roping harness which has an adjustable lanyard whose length is well maintained following tensile stress, whose tensile strength is better than the configurations of the prior art for a predefined wire element and which remains easy to adjust.

[0027] Advantageously, the rope harness comprises a device for adjusting a wire element according to any one of the preceding configurations in which the support is a strap fixed to the belt or to one of the leg loops.

[0028] Preferably, the wire element connects the belt with a connector connected to a mobile anchor point.

[0029] Even more preferably, the roping harness comprises a second adjustment device configured to adjust a length of a second wire element according to any one of the preceding configurations in which the adjustment device is attached to the abdominal belt on one of a right or left side relative to a median sagittal plane and the second adjustment device is attached to the abdominal belt on the other of the right or left side, the second wire element connecting the belt to a second connector connected to the mobile anchor point. Summary description of the drawings

[0030] Other advantages and characteristics will emerge more clearly from the following description of particular embodiments and implementations of the invention given as non-limiting examples and represented in the appended drawings, in which: there figure 1 schematically illustrates a perspective view of a lanyard provided with a first embodiment of an adjustment device in a locking position; the figure 2 schematically illustrates a sectional view of a lanyard provided with a first embodiment of an adjustment device in a locking position; the figure 3 schematically illustrates a perspective view of a lanyard provided with a second embodiment of an adjustment device in an unlocked position; the figure 4 schematically illustrates a sectional view of a lanyard provided with the second embodiment of an adjustment device in an unlocked position; the Figure 5schematically illustrates a perspective view of a lanyard provided with the second embodiment of an adjustment device in a locking position; the figure 6 schematically illustrates a sectional view of a lanyard provided with the second embodiment of an adjustment device in a locking position; the figure 7 schematically illustrates a perspective view of a lanyard provided with a third embodiment of an adjustment device in an unlocked position; figure 8 schematically illustrates a sectional view of a lanyard provided with the third embodiment of an adjustment device in an unlocked position; the figure 9 schematically illustrates a perspective view of a lanyard provided with the third embodiment of an adjustment device in a locking position; figure 10schematically illustrates a sectional view of a lanyard provided with the third embodiment of an adjustment device in a locking position; figure 11 schematically illustrates a perspective view of a roping harness fitted with two lanyards attached to a belt; the figure 12 schematically illustrates a perspective view of a body according to the first embodiment of the adjustment device; the figure 13 schematically illustrates a perspective view of a body according to the second embodiment of the adjustment device; the figure 14 schematically illustrates a perspective view of a blocking element; the figure 15 schematically illustrates another embodiment of an adjustment device; the figure 16 schematically illustrates an internal part of a blocking element; the figure 17 schematically illustrates a perspective view from above of an external part of a blocking element; the figure 18schematically illustrates a perspective view from below of an external part of a blocking element; the figure 19 schematically illustrates a perspective view of an internal part of a blocking element installed on a body; the figure 20 schematically illustrates a perspective view of an internal part and an external part of a blocking element installed on a body; the figure 21 schematically illustrates a sectional view of a locking element having an external part and an internal part mounted on a body. Description of the embodiments

[0031] THE figures 1 to 11 illustrate different embodiments of lanyards provided with an adjustment device 1 configured to adjust the length of a wire element 2 as well as a roping harness 3 provided with such lanyards with such an adjustment device 1.

[0032] The adjustment device 1 comprises a body 4 and a locking element 5. The locking element 5 is fixed to the body 4 and is mounted to move relative to the body 4.

[0033] The body 4 is an openwork element intended to be crossed by the wire element 2. The body 4 has at least a first wall 6, a support wall 7 and a second wall 8 to define at least a first slot 9 and a second slot 10 intended for the passage of the wire element 2. The first slot 9 is delimited in part by the first wall 6. The second slot 10 is delimited in part by the second wall 8. The second slot 10 is distinct and separated from the first slot 9 by the support wall 7.

[0034] THE figures 12 and 13 illustrate two embodiments of a body 4. In the embodiment illustrated in figure 12, the body 4 only delimits the first slot 9 and the second slot 10. The body 4 is in the form of a ring whose support wall 7 divides the central hole into the first slot 9 and the second slot 10. In the embodiment illustrated in figure 13 , the body 4 defines an additional through hole in addition to the first slot 9 and the second slot 10. It is possible to have a body 4 which defines more slots or through holes. The body 4 is preferably a non-deformable element, for example an element made of aluminum or steel. In other words, the support wall 7 is fixedly arranged relative to the first wall 6 and relative to the second wall 8.

[0035] Preferably, the first slot 9 is delimited by the first wall 6 and by the support wall 7 and the second slot 10 is delimited by the second wall 8 and the support wall 7 as illustrated in figures 1 to 13. In order to allow easy adjustment of the length of the wire element 2, it is advantageous for the width and height of each of the first slot 9 and the second slot 10 to be greater than the width and thickness of the wire element 2. The first slot 9 and / or the second slot 10 may have a rectangular section when the wire element 2 is a strap or any other element having a width significantly greater than the thickness.

[0036] The adjustment device has a locking element 5 which is mounted to be movable between a locking position and an unlocking position. In the locking position, the locking element 5 locks the wire element 2. In the unlocking position, the locking element 5 allows the wire element 2 to slide relative to the body 4. The locking element 5 is mounted to pivot relative to the body 4 around a pivot shaft 11 to move closer to or away from the support wall 7. The pivot shaft 11 is arranged closer to the first wall 6 than to the second wall 8 and closer to the first wall 6 than to the support wall 7 in a first direction which passes successively through the first wall 6, the support wall 7 and the second wall 8. A particular embodiment of the locking element 5 is illustrated in figure 13 .

[0037] The blocking element 5 has a support wall 12 and preferably a handle 13. The handle 13 and the support wall 12 delimit a passage hole 14 for wire element 2.

[0038] The wire element 2 is divided into a first strand 2a and a second strand 2b. The first strand 2a of the wire element 2 passes through the second slot 10 and the through-hole 14. The first strand 2a extends to run along a first face of the support wall 12 and around the first wall 6. The second strand 2b of the wire element 2 passes through the second slot 10 and runs along a second face of the support wall 12, around the bearing wall 7, to pass through the body 4 through the first slot 9. Continuing to extend, the second strand 2b runs around the first wall 6 to form the first strand 2a. As illustrated, the wire element 2 forms a loop around the first wall 6.

[0039] In other words, the first strand 2a and the second strand 2b pass through the body 4 through the second slot 10. The two strands extend towards the first wall 6 in order to go around the first wall 6 and join up. The two strands are separated by the support wall 12. The second strand 2b passes through the body 4 again through the first slot 9 and goes around the first wall 6 in order to join up with the first strand 2a. The second strand 2b is arranged between the support wall 7 and the support wall 12. The support wall 12 is arranged between the first strand 2a and the second strand 2b. When the second strand 2b is tensioned, the second strand 2b pivots the support wall 12 towards the bearing wall 7. The second strand 2b being arranged between the support wall 12 and the bearing wall 7, the first strand 2a applies a force to the support wall 12 in the direction of the bearing wall 7 which presses the first strand 2a against the bearing wall 7.This allows the wire element 2 to be locked in the chosen position against the support wall 7. The locking element 5 is in the locking position. The loop of the wire element 2 passes through the body 4 through the second slot 10 and around the support wall 7. The two strands follow different paths so that the loop surrounds the first wall 6 and the support wall 12 in order to be able to wedge the second strand 2b between the support wall 7 and the support wall 12 when the first strand 2a is pulled.

[0040] The greater the tensile force applied to the first strand 2a, the greater the force applied by the support wall 12 to the second strand 2b to hold the second strand 2b in position. The first strand 2a is the strand under tension while the second strand 2b is the free strand.

[0041] In the locking position, the locking element 5 presses the second strand 2b against the support wall 7, which has the effect of locking the second strand 2b. In the unlocking position, the locking element 5 defines a functional clearance with the support wall 7 to allow sliding of the second strand 2b. In the locking position, the force applied by the first strand 2a presses the first strand 2a against the support wall 12 and presses the support wall 12 against the second strand 2b. The locking of the wire element 2 is obtained by friction and not by pinching as in the configurations of the prior art. The support wall 12 prevents direct friction of the first strand 2a with the second strand 2b. As illustrated in figures 2 , 4 , 6 , 8 , 10 , 15 And 21, the support wall 12 has a curvature close to or identical to the curvature of the support wall 7 so that the support is as strong as possible between the wire element 2 and the support wall 7 and between the wire element 2 and the support wall 12. The adaptation of the curvatures makes it possible to avoid pinching of the wire element 2.

[0042] As illustrated in figures 2 , 4 , 6 , 8 , 10 , 15 And 21 , the support wall 7 is devoid of sharp edges to avoid reducing the breaking strength. The support wall 7 may have a circular or substantially circular section. The support wall 12 may define a hook in the form of an arc of a circle.

[0043] Preferably, to keep the second strand 2b blocked, the support wall 12 may be provided with pins 15, teeth or any other means capable of penetrating the second strand 2b. The pins 15 make it possible to keep the second strand 2b in position even when the tension in the first strand 2a decreases. It is particularly advantageous for the pins 15 to be arranged facing the zone where the second strand 2b bypasses the support wall 7 because it is easier to ensure contact between the pins 15 and the second strand 2b, which will tend to follow the shape of the support wall 7. The bypass can be done over at least 180°, preferably at least 270°.

[0044] In the embodiments illustrated in figures 1 to 11 , the pivot shaft 11which allows the locking element 5 to pivot relative to the body 4 also forms the first wall 6. In other words, the locking element 5 is pivotally mounted relative to the body 4 around the first wall 6. In this case, the first strand 2a and the second strand 2b bypass the first wall 6, which also forms the pivot shaft 11, to join.

[0045] In an alternative embodiment illustrated in the figure 15 , the body 4 defines more slots than the first slot 9 and the second slot 10. The pivot shaft 11is not formed by the first wall 6. The blocking element 5 defines an additional slot for the wire element 2 to pass through the support wall 12 and allow the first strand 2a to continue with the second strand 2b. The operation of the blocking element 5 is identical to what was described above with the first strand 2a which is able to press the support wall 12 against the second strand 2b and against the support wall 7 to fix the position of the second strand 2b.

[0046] To facilitate the actuation of the blocking element 5 to the unlocking position, it is advantageous to provide that the blocking element 5 is provided with a handle 13. In the illustrated embodiments, the handle 13 is mounted opposite the support wall 12 and the bearing wall 7 when the blocking element 5 is in the locking position. The opposite mounting defines the passage hole 14.

[0047] Another configuration of the handle 13 is possible, for example by arranging it offset relative to the support wall 12 in a direction parallel to the pivot axis of the locking element 5.

[0048] The fixing of the blocking element 5 on the body 4 and its movable mounting relative to the body 4 are particularly advantageous because they make it possible to ensure that the position of the second strand 2b is maintained even when the body 4 is moving.

[0049] In the embodiments illustrated in figures 3 to 11 , the body 4 is mounted to be movable relative to a support 16. Preferably, the body 4 is mounted to be movable to pivot relative to the support 16. Even more preferably, the body 4 is mounted to be movable to pivot around an additional pivot shaft which is formed by the second wall 8 or another wall.

[0050] The support 16 defines a through cavity 17 and the second wall 8 passes through the through cavity 17. Preferably, the additional pivot axis of the body 4 relative to the support 16 mainly comprises a component parallel to the pivot axis of the blocking element 5 relative to the body 4.

[0051] The tensioning of the first strand 2a results in a displacement of the body 4 on the side having the blocking element 5. When the body 4 is caused to move relative to the support 16 in the opposite direction, the body 4 and the blocking element 5 move in a direction which tends to increase the tension force in the first strand 2a so that the second strand 2b remains blocked against the support wall 7. The same applies when the body 4 moves towards the end of the first strand 2a not fixed to the body 4. The displacement can induce a reduction in the stress in the first strand 2a. It may be advantageous to use the pins 15 to ensure good fixing.

[0052] By its construction with two slots separated by the support wall 7, the body 4 is able to ensure the blocking of the wire element 2 which winds around the support wall 7 and whose two strands meet around the first wall 6. However, once the wire element 2 is blocked and under tension, it is very difficult or even impossible to move the wire element 2 inside the body 4. It is then particularly advantageous to use the blocking element 5 mounted movably relative to the body 4. By moving the blocking element 5 relative to the body 4 to move away from the support wall 7, it is possible to reduce the value of the force applied by the support wall 12 on the second strand 2b. The reduction in the value of the force makes it possible to allow sliding of the first strand 2a and the second strand 2b.

[0053] A body defining two slots for the passage of a strap and whose function is to tighten the strap is known to slackline practitioners as a "Banana". The "Banana" device is used to lock a strap at the desired length. The "Banana" device is used in association with an adjustment device, for example a ratchet tensioner which allows the strap to be tensioned and then slackened at the end of use. However, in this practice, it is not sought to easily adapt the length of the strap under tension. The "Banana" device does not allow the length of the strap to be adjusted when tensioned.

[0054] When the support wall 12 is provided with pins 15, sliding of the second strand 2b is possible when the support wall 12 reaches a threshold position which corresponds substantially to the position where the pins 15 no longer penetrate into the wire element 2.

[0055] In order to facilitate the movement of the blocking element 5 from the blocking position to the unlocking position, it is advantageous for the adjustment device 1 to be provided with a handle 13 and more particularly for the handle 13 to be fixed to the blocking element 5 and to be pivotally mounted relative to the blocking element 5 in order to better adapt the position of the handle 13 to the direction of the force to be applied to move the support wall 12 away from the bearing wall 7.

[0056] It is particularly advantageous to provide that the support wall 7 is free of sharp edges in order to avoid shearing the wire element 2 when the latter is subjected to significant stresses. More preferably, the contact surface with the wire element 2 is curved and advantageously, the support wall 7 has a circular section.

[0057] It is also advantageous for the contact area between the wire element 2 and the first wall 6 to be free of sharp edges. It is advantageous for the first wall 6 to have a curved surface and preferably a circular section.

[0058] However, if the wire element 2 is only in contact with the blocking element 5 and not in contact with the first wall 6 as illustrated in figures 2 to 11 , the section of the first wall 6 is of little importance. It is then advantageous for the part of the blocking element 5 intended to be covered by the wire element 2 to be a curved surface and more preferably an arc of a circle.

[0059] THE Figures 1 and 2illustrate an embodiment of a lanyard with adjustable length. The lanyard has a wire element 2 and a body 4 which defines an anchor ring intended for the attachment of a connector. As indicated above, the orientation of the body 4 relative to the longitudinal axis of the first strand 2a does not intervene in the blocking of the second strand 2b as long as the blocking element 5 is in the blocking position. The handle 13 can be pivotally mounted about a handle shaft 18 which is fixed to the blocking element 5. The handle shaft 18 is stationary mounted relative to the blocking element 5.

[0060] The movement of the blocking element 5 relative to the body 4 is facilitated, which makes it easier to extend the effective length of the wire element 2 when the first strand 2a is under tension.

[0061] THE figures 3 to 11 illustrate embodiments where the body 4 is pivotally mounted relative to a support 16. The figures 3 , 4 , 7 and 8 illustrate two different embodiments of a body 4 with the locking element 5 in an unlocked position. The figures 5, 6 , 9 and 10 illustrate two different embodiments of a body 4 with the locking element 5 in a locking position.

[0062] THE figures 3 to 6 illustrate an embodiment in which the body 4 is curved, that is to say that the direction which successively connects the first wall 6, the support wall 7 and the second wall 8 is curved.

[0063] THE figures 7 to 10 illustrate an embodiment in which the body 4 is planar, that is to say that the direction which successively connects the first wall 6, the support wall 7 and the second wall 8 is a straight line.

[0064] In a particular embodiment, the blocking element 5 is mounted to move relative to the body 4 within a limited angular range, for example within an angular range of less than 20°. The blocking element 5 defines a through hole and the bearing wall 7 passes through the through hole. The dimension of the through hole is greater than the dimension of the bearing wall 7 so as to allow relative movement between the blocking element 5 and the bearing wall 7. The difference between the dimension of the bearing wall 7 and the wall defining the through hole makes it possible to limit the movement of the blocking element 5 relative to the bearing wall 7. Limiting the angular amplitude of the blocking element 5 makes it possible to ensure that the blocking element 5 will block the second strand 2b following a tensile force applied to the first strand 2a.

[0065] There figure 11illustrates a roping harness 3 provided with a belt forming the support 16 and a pair of leg loops 29. The lanyard is attached to the belt by means of the body 4 which is attached to a through cavity 17.

[0066] In a particular embodiment illustrated in figure 11 , the lanyard has a connector 19 at one end of the first strand 2a. The lanyard provided with a connector 19 is attached to the belt and the connector 19 attached to an anchor is capable of supporting a user suspended in the rope harness 3.

[0067] Preferably, the connector 19 is fixed in a non-removable manner to the first strand 2a. The adjustment device 1 is configured to move the connector 19 closer to or further away from the belt.

[0068] In an advantageous embodiment, the connector 19 is also attached to a leg loop 29 so that the forces linked to the weight of the user suspended in the harness are distributed between the belt and the leg loops 29.

[0069] Preferably, the roping harness 3 is provided with two lanyards, one of which is attached to the right part of the belt and the other is attached to the left part of the belt. The right and left parts are separated by the median sagittal plane of the user wearing the roping harness 3.

[0070] More advantageously, the two connectors 19 form a right connector and a left connector which are respectively attached to the right thigh loop 29 and to the right part of the belt or to the left thigh loop 29 and to the left part of the belt. It is then advantageous to fix a mobile anchoring point 20 to the two connectors 19 and more preferably to fix a flexible link 21 to the two connectors and to move the mobile anchoring point 20 along the flexible link 21, for example by sliding along the flexible link 21. The flexible link 21 can be a rope or a strap. The mobile anchoring point 20 can be a ring.

[0071] The belt may also be provided with a material holder 22 and any other equipment necessary for good practice by the user. The wire element 2 is preferably a strap or any other element whose length is greater than the width, itself greater than the thickness.

[0072] There figure 14 illustrates an embodiment of a blocking element 5. The blocking element 5 defines a first through hole 5a for the passage of the first wall 6 so as to form the pivot shaft 11. The blocking element 5 defines a second through hole 5b for the passage of the support wall 7 so as to limit the angular displacement authorized for the pivoting of the blocking element 5 relative to the body 4. The first through hole 5a and the second through hole 5b are preferably dissociated.

[0073] It is advantageous for the blocking element 5 to define a portion with a shape complementary to the shape of the support wall 7 so as to have significant contact between the second strand 2b and the blocking element 5, which makes it easier to maintain the blocking when the tensile force in the first strand 2a decreases. In the illustrated embodiment, the blocking element 5 does not have a handle 13.

[0074] There figure 15 illustrates an alternative embodiment in which the wire element 2 does not bypass the pivot shaft 11. The body 4 defines one or more additional slots in addition to the first slot 9 and the second slot 10. The blocking element 5 defines a through-hole at the end of the support wall 12 so as to allow passage of the first strand 2a from the first face of the support wall 12 towards the other face of the body 4 to bypass the first wall 6 and form the second strand 2b. As for the previous embodiments, the tensile force applied to the first strand 2a presses the support wall 12 against the bearing wall 7, wedging the second strand 2b.

[0075] In the figures 1 to 15, the blocking element 5 is presented in the form of a monolithic part. However, it is also possible to form the blocking element 5 in several parts, for example with an internal part 5' and an external part 5". The internal part 5' is illustrated in the figure 16 while the 5" outer part is shown in figures 17 And 18 respectively in top view and a bottom view.

[0076] The internal part 5' may define one or more first hooks 23 which are intended to hook onto the first wall 6 and allow pivoting relative to the first wall 6. The first hooks 23 have an identical operation to the wall which delimits the first through hole 5a. The internal part 5' also defines one or more second hooks 24 which are intended to receive the support wall 7. The internal part 5' is perforated in order to allow the passage of the wire element 2. The internal part 5' may be provided with arms 25 which connect the first hooks 23 and the second hooks 24.

[0077] The external part 5" defines one or more hooks 26 which are intended to receive the support wall 7. The external part 5" defines the pins 15.

[0078] The internal part 5' is mounted to be movable relative to the external part 5". The internal part 5' and the external part 5" are mounted to be movable and pivot independently around the first wall 6.

[0079] The space between the inner portion 5' and the outer portion 5" defines the through hole 14. Preferably, the through hole 14 is extended by at least one through hole which passes through the outer portion 5" as illustrated in figures 17 And 18 .

[0080] It is particularly advantageous for the inner portion 5' to be movable relative to the outer portion 5" with limited functional clearance. In the illustrated embodiment, the inner portion 5' and the outer portion 5" both define slots 27 which are opposite each other. A rod 28 passes through the two slots 27 in order to limit the movements of the outer portion 5" relative to the inner portion 5'. As illustrated in figures 20 And21 , the inner part 5' and the outer part 5" are separated by the support wall 7. The outer part 5" forms the support wall 12.

[0081] In the embodiment illustrated in figure 21 , the internal part 5' and the external part 5" are attached to a body 4. The body 4 is intended to be fixed to a support 16.

[0082] The first strand 2a passes under the first wall 6 and the support wall 7 by passing through the second slot 10. The second strand 2b passes through the passage hole 14 and it passes above the external part 5". The first strand 2a is extended by the second strand 2b which goes around the first wall 6 by passing between the first wall 6 and the first strand 2a. The second strand 2b goes around the support wall 7. The second strand 2b is arranged between the support wall 7 and the external part 5". The second strand 2b escapes from the blocking element 5 by passing between the first strand 2a and the other portion of the second strand 2b.

[0083] The effect of applying tension to the first strand 2a and the second strand 2b is to move the outer portion 5" towards the support wall 7 and to press the outer portion 5" against the second strand 2b. The second strand 2b is wedged against the support wall 7 and the outer portion 5". The first strand 2a presses the two portions of the second strand 2b against the inner portion 5' and / or against the first wall 6. When the strands are put under tension, the application of a force to the outer portion 5" to move away from the inner portion 5' and away from the support wall 7 makes it possible to reduce the pressure on the second strand 2b, which facilitates the movement of the strands and therefore the loosening of the wire element 2.

Claims

1. Adjustment device (1) configured to adjust a length of a wire element (2) comprising: - a body (4) having at least a first wall (6), a support wall (7) and a second wall (8) arranged to define at least a first slot (9) and a second slot (10), the first slot (9) being delimited at least by the first wall (6), the second slot (10) being delimited at least by the second wall (8), the second slot (10) being distinct and separated from the first slot (9) by the support wall (7); - a wire element (2) having a first strand (2a) extending a second strand (2b);- a blocking element (5) mounted to move between a blocking position and an unlocking position, the unlocking position allowing the wire element (2) to slide relative to the body (4) and the blocking position preventing the wire element (2) from sliding, the blocking element (5) being fixed to the body (4) and mounted to pivot relative to the body (4) around a pivot shaft (11) to move closer to or away from the support wall (7), the pivot shaft (11) being arranged closer to the first wall (6) than to the second wall (8) and closer to the first wall (6) than to the support wall (7), the first wall (6), the support wall (7) and the second wall (8) being arranged successively in a first direction; wherein, in the locking position, a support wall (12) of the locking element (5) presses on the second strand (2b) to lock the second strand (2b) against the support wall (7); ; characterized in thatthe wire element (2) goes around the first wall (6) to define the first strand (2a) and the second strand (2b); in that the first strand (2a) passes through the second slot (10) and extends to the first wall (6) along a first face of the support wall (12); in that the second strand (2b) passes through the second slot (10) and extends to the first wall (6) to join the first strand (2a) along a second face of the support wall (12) so that the support wall (12) is arranged between the first strand (2a) and the second strand (2b); in that the second strand passes through the body (4) between the support wall (7) and the first wall (6); in that, when a tensile force is applied to the first strand (2a), the first bin (2a) presses on the first face of the support wall (12) to place the blocking element (5) in the blocking position, the support wall (12) pressing against the second strand (2) to block the second strand (2b) against the support wall (7); in which in the unlocking position, the support wall (12) defines a functional clearance with the support wall (7) to allow sliding of the second strand (2b).

2. Adjustment device (1) for a wire element (2) according to claim 1 in which the second face of the support wall (12) is provided with pins (15) intended to be inserted into the wire element (2).

3. Adjustment device (1) of a wire element (2) according to one of claims 1 and 2 wherein the blocking element (5) defines a through hole for the passage of the support wall (7), a height of the support wall (7) being less than a height of the through hole in the direction of pivoting of the blocking element (5) so as to constrain the pivoting of the blocking element (5) to a predefined angular range.

4. Adjustment device (1) of a wire element (2) according to any one of claims 1 to 3 in which the first direction of the body (4) is curved.

5. Adjustment device (1) for a wire element (2) according to any one of claims 1 to 4 in which the support wall (7) has a circular section and the support wall (12) defines a hook defining an arc of a circle.

6. Adjustment device (1) for a wire element (2) according to any one of claims 1 to 5 in which the locking element (5) is pivotally mounted around the first wall (6).

7. Adjustment device (1) for a wire element (2) according to any one of claims 1 to 6 in which the support wall (7) is devoid of a sharp edge in a contact zone with the wire element (2) and / or the blocking element (5) is devoid of a sharp edge in a contact zone with the wire element (2).

8. Adjustment device (1) for a wire element (2) according to claim 7 in which the support wall (7) has a circular section and the blocking element (5) defines a bypass zone bypassed by the wire element (2) whose external face is a portion of a circular arc, the blocking element (5) forming a hook intended to receive the support wall (7).

9. Adjustment device (1) for a wire element (2) according to any one of claims 1 to 8 in which the blocking element (5) is formed by an internal part (5') and an external part (5") each pivotally mounted around the first wall (6), the external part (5") being mounted to move relative to the internal part (5') with limited functional play, the internal part (5') and the external part (5") being separated by the support wall (7).

10. Adjustment device (1) for a wire element (2) according to any one of claims 1 to 9 in which the body (4) is pivotally mounted relative to a support (16) around an additional pivot shaft.

11. Adjustment device (1) of a wire element (2) according to claim 10 in which the second wall (8) forms the additional pivot shaft.

12. Adjustment device (1) for a wire element (2) according to one of claims 10 and 11 in which the body (4) defines a hooking ring separate from the first slot (9) and the second slot (10).

13. Rope harness (3) comprising an adjustment device (1) for a wire element (2) according to any one of claims 10 to 12 in which the support (16) is a strap fixed to the belt or to one of the leg loops (29).

14. A roping harness (3) according to claim 13 wherein the wire element (2) connects the belt with a connector (19) connected to a mobile anchor point (20).

15. A roping harness (3) according to claim 14 comprising a second adjustment device configured to adjust a length of a second wire element according to any one of claims 9 to 11 wherein the adjustment device is attached to the abdominal belt at one of a right or left side relative to a median sagittal plane and the second adjustment device is attached to the abdominal belt at the other of the right or left side, the second wire element connecting the belt to a second connector connected to the movable anchor point (20).

Images