EP3659675A2 - Sicherungsvorrichtung - Google Patents

Sicherungsvorrichtung Download PDF

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Publication number
EP3659675A2
EP3659675A2 EP19212358.6A EP19212358A EP3659675A2 EP 3659675 A2 EP3659675 A2 EP 3659675A2 EP 19212358 A EP19212358 A EP 19212358A EP 3659675 A2 EP3659675 A2 EP 3659675A2
Authority
EP
European Patent Office
Prior art keywords
rope
cam
shaft
ring
blocking element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19212358.6A
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English (en)
French (fr)
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EP3659675A3 (de
Inventor
Olivier MATHE
Christophe Quillard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zedel SAS
Original Assignee
Zedel SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zedel SAS filed Critical Zedel SAS
Publication of EP3659675A2 publication Critical patent/EP3659675A2/de
Publication of EP3659675A3 publication Critical patent/EP3659675A3/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope

Definitions

  • the invention relates to a belay device for rope for the practice of climbing or mountaineering and more generally activities at height.
  • a first category of belay device is illustrated by the document FR 2647099 of the plaintiff who uses two pulleys having a flat.
  • the two pulleys are mounted movable relative to each other and one of the pulleys is mounted movable relative to a base flange.
  • By moving the handle it is possible to modulate the friction force applied to the rope which circulates between the two pulleys.
  • This configuration is particularly effective, but it appears bulky and heavy, which makes it impractical in many activities, particularly in climbing and mountaineering.
  • a configuration is also known which uses several pulleys mounted on a plate and one of the pulleys of which has a rotation shaft movable in translation on the plate. Examples of implementation are illustrated in the documents DE391582 , FR7623143 or DE2412987 . These configurations are unsuitable for current uses in activities at height where the belay device must be easily transportable and whose frictional force must be easily modulated. These configurations are also bulky. In these architectures, there is a pulley mounted movable in autorotation and which, depending on the load applied, moves to a blocking position where the rope is blocked. In variants, a handle is used to move the pulley and adjust the friction force. In other variants, a spring is compressed and opposes the blocking of the rope below a threshold stress.
  • An object of the invention is to provide a belay device which is easily transportable and whose operation is improved with respect to the configurations of the prior art.
  • the belay device is remarkable in that the cam, the body and the blocking element are arranged to define a path for circulation of the rope where a strand of rope is intended to pass between the cam and the blocking element.
  • the belay device is also remarkable in that the first end defines a through opening forming the hooking hole so that the hooking hole is mounted movable at least in rotation relative to the body along the path to make vary the distance between the attachment hole and the blocking element.
  • the extension, along the longitudinal axis, of the internal surface of the first end defining the through opening is devoid of vis-à-vis the body.
  • the body defines a light along the path, the light having a width greater than the width of the through opening on the path, the width being measured along the longitudinal axis connecting the shaft of rotation and the first end.
  • a spring fixed to the cam so as to move the cam from the first position.
  • the cam has a second end which delimits a second through opening defining a functional clearance with the shaft to allow another movement of the first end in addition to the rotation.
  • the spring is installed in a second through opening.
  • the body defines a ramp and in which the cam has a projecting area sliding along the ramp when the first end moves along the path.
  • the ramp defines a stop for blocking the first end in the blocking position and / or a stop for blocking the first end in the other position.
  • the cam and / or body are devoid of a handle configured to bear simultaneously on the body and on the cam.
  • the invention also relates to a belay system which is easily transportable and whose operation is improved with respect to the configurations of the prior art.
  • the belay system is remarkable in that the cam, the body and the blocking element are arranged to define a path for circulation of the rope where a strand of rope is intended to pass between the cam and the blocking element.
  • the belay system is also remarkable in that the first end defines a through opening forming the hooking orifice so that the hooking orifice is mounted movable at least in rotation relative to the body along the path and in that, in the locked position, the connection element is free from physical contact with the body.
  • the section of the through opening in a plane perpendicular to the longitudinal axis of the rotation shaft and the section of the connecting element are non-circular to form a means of anti-rotation of the connection with respect to the through opening.
  • connection element has a section representing at least 75% of the section of the through opening, the section being measured in a plane perpendicular to the longitudinal axis of the shaft.
  • the rotation shaft delimits the introduction input so that the rotation shaft is intended to bear on the tensioned strand.
  • the invention also relates to a method of using a belay system which is easy to implement.
  • the belay device as illustrated in the Figures 1 to 23 is a belay device intended to cooperate with at least one rope having a first diameter and define at least one blocking position of the rope and a position for circulation of the rope or ropes in the belay device.
  • the belay device comprises a body 1 which is perforated so as to define an entry inlet 1a for a rope loop 2 or two loops of two ropes 2.
  • a blocking element 3 is mounted in the belay device and goes intervene to block rope 2 or ropes 2.
  • the entry 1a is delimited by two borders.
  • the blocking element 3 is preferably mounted fixed inside the belay device.
  • the blocking element 3 is mounted on the body 1.
  • the belay device comprises a shaft 4 which is a rotation shaft.
  • the shaft 4 is mounted on the body 1.
  • the shaft 4 is mounted fixed on the body 1 or it is mounted movable in autorotation.
  • the shaft 4 is mounted fixed on the cam 5 and movable relative to the body.
  • the shaft 4 is mounted movable relative to the body and relative to the cam 5.
  • the shaft 4 is distinct from the blocking element 3. It is preferable to have a fixed blocking element 3 to improve the blocking of the cord 2.
  • the blocking element 3 defines one end of the entry 1a.
  • the two opposite ends of the inlet 1a are defined by the blocking element 3 and the shaft 4.
  • the belay device comprises a cam 5 mounted on the shaft 4 to be movable at least in rotation relative to the body 1.
  • the cam 5 moves in rotation along a path defined by the shaft 4.
  • the cam 5 moves in a plane which crosses the blocking element 3 and the shaft 4 so that the cam 5 can approach or move away from the blocking element 3
  • the plane of rotation of the cam 5 is perpendicular to the axis of rotation defined by the shaft 4 and the plane of rotation passes through the cam 5 and the blocking element 3.
  • the cam 5 moves between a blocking position where the distance between the cam 5 and the blocking element 3 is less than the first diameter of the rope and another position where the distance between the cam 5 and the blocking element 3 is greater at the first diameter of the rope.
  • the cam 5 is movable at least in a half-space separated from the half-space containing the entry inlet 1a of the rope loop 2.
  • the two half-spaces are separated by a plane containing the axis of rotation of the cam 5 and passing through the blocking element 3.
  • the movement of cam 5 makes it possible to define a position where the rope is blocked and a position where the rope can circulate inside the belay device.
  • the cam 5 passes or does not pass through the introduction input 1a.
  • the cam 5 has a first perforated end 5a defining a through opening 6 in a direction parallel to the longitudinal axis of the shaft 4.
  • the through opening 6 is intended to receive a connection element A which makes the mechanical connection between the belay device and a fixing point.
  • the attachment point can be a harness worn by a user or an anchor point, for example an anchor point mounted on a rock, ice, or an artificial climbing structure or another type of artificial structure.
  • connection element A can be a carabiner, a link, a shackle or any other mechanical element capable of ensuring the mechanical connection between the fixing point and the belay device.
  • the first end 5a forms a ring which opens the through opening.
  • the ring is configured to ensure sufficient mechanical strength when the rope is under tension in order to maintain the mechanical connection between the fixing point and the belay device.
  • the cam 5 has a first perforated end 5a which is mechanically connected to the shaft 4 by means of a second end 5b and an arm 5c so that the through opening 6 moves around the shaft 4.
  • the second end 5b is mounted on the shaft 4.
  • the first end 5a is configured to block the cord 2 between the ring and the blocking element 3.
  • the first end 5a defines a ring which separates the connection element A and the rope 2 which makes the blocking more reliable, avoiding taking into account the surface condition, the section and the diameter of the connection element A in the interaction between the rope and the connection element A.
  • the arm 5c defines a groove which allows the insertion of a strand of the cord 2 between the first perforated end 5a and the shaft 4.
  • Other configurations are possible with a cam 5 offset from the end of the shaft 4 and an arm 5c possibly full, but this embodiment may be less compact and / or less practical.
  • the groove defines a width greater than the diameter of the cord 2 which makes it possible to block the cord against the blocking element without having the blocking of the cord between the ring and the shaft or the second end.
  • the loop of rope passes around the ring of the first end 5a.
  • the body 1 and the cam 5 are configured so as to allow the movement of the cam 5 and of the connection element A relative to the body 1 along the path between the blocking position and the other position.
  • the body 1 and the cam 5 are advantageously configured so that a displacement of the cam 5 along the trajectory causes a displacement of the connection element A along the trajectory and / or that a displacement of the connection element A along the path causes displacement of the cam 5 along the path.
  • the first end 5a moves between a first position representative of the blocking position where the distance between the first end 5a and the blocking element 3 is minimum and another position where the distance is greater.
  • the cam 5 separates the blocking element 3 and the connection element A so as to avoid direct contact between the cord 2 and the connection element A causing uncertain blockages of the cord linked to unsuitable forms of connection element A and above all a deterioration of the cord when the connection element A is damaged.
  • the security and quality of blocking are improved.
  • the distance between the ring and the blocking element 3 is less than the distance between the ring and the shaft or, where appropriate, between the ring and the second end.
  • the first end moves along a path representing an angle preferably greater than 45 ° and even more preferably greater than 60 ° in order to facilitate the introduction of the rope loop 2 inside the body 1 and its installation around of the first end 5a without being hindered by the cam 5.
  • the belay device is also configured so that in the locked position, the mechanical connection between the belay device and the fixing point is made on the first end 5a which is connected simultaneously to the rope 2 and to the connection element A.
  • the belay device is configured so that the rope 2 is supported on the first end 5a of the cam 5 and the belay device is mechanically connected to the fixing point by means a connection element A which is coupled to the through opening 6.
  • connection element A is movable relative to the body 1 and moves along the path even when the rope 2 is installed in the body 1.
  • the force is taken up between the belay device and the fixing point. by means of the connection element A which is mounted in the through opening 6 so that the forces between the cord 2 and the connection element A are applied to the first end 5a.
  • the rope 2 pulls the belay device upwards through the rope strand 2 emerging near the shaft 4 and directed vertically while the connection element A mounted in the through opening 6 applies an opposite force (directed down).
  • the cord 2 defining a loop
  • the tensioning of the cord 2 aims to reduce the loop which imposes a force on the different points of contact between the cord 2 and the body 1, that is to say the two opposite ends from the inlet 1a, here between the second end 5b and the blocking element 3.
  • the tensioning of the cord 2 results in the rotation of the body 1 in an attempt to equalize the forces applied to the blocking element 3 and the second end 5b.
  • connection element A is not fixed directly to the body and preferably the body 1 is devoid of a means for installing a connection element A.
  • the body 1 is devoid of a means of installation of a connection element A it is understood that the installation of the connection element A will prevent the displacement of the first end 5a over all or part of the path and / or will not define a position for blocking the rope 2 and a sliding position.
  • the behavior of the belay device changes according to the diameter of the rope and also the diameter and the shape of the carabiner used because it comes into contact with the body wall and the cam wall. It appeared that this configuration is not practical to use because it requires the use of a handle which must be sufficiently integrated into the device so as not to hinder the use of the belay device while being sufficiently practical in its use. It also appears that the compulsory use of a handle may hinder the blocking of the rope.
  • the belay device is connected to the fixing point by means of a carabiner attached to the body. Again, the tensioning of the rope causes its blockage between the roller and the body which requires the use of the handle to move the roller and slide the rope. As with the previous device, it is impossible to unlock the rope without using the handle, which complicates its use and can cause difficulty in locking the rope if the handle is not correctly installed.
  • This device is larger than that presented in the Figures 1 to 21 .
  • a first force is applied by the rope 2 in abutment against the blocking element 3 and a second force is applied by the connection element A on the second end 5b of the cam 5.
  • the rotation of the body 1 by the user makes it possible to move the body 1 relative to the first end 5a of the cam 5 and therefore to modulate the distance between the first end 5a and the blocking element 3 to modulate the friction on the cord 2 and therefore the rope running speed 2.
  • the tensioning of the rope 2 will move the first end 5a relative to the body 1 in order to bring the first end 5a closer to the contact points between the rope 2 and the body 1.
  • the cam 5 moving along the path, the movement of the cam 5 brings the first end 5a closer to the blocking element 3.
  • the rotation of the body 1 by means of the rotation shaft 4 in contact with the strand under tension makes it possible to modulate the force applied to the rope 2 by direction of the blocking element and therefore modulate the stress on the rope 2 which prevents the rope from sliding inside the belay device.
  • the belay device can be configured to operate with a single strand of rope 2 ( figure 1 ) or with two strands of rope ( figure 2 ).
  • the belay device In operation with two strands of rope 2 mounted in parallel along the longitudinal axis of the rotation shaft 4 of the cam 5, it is possible to provide that the belay device has two cams 5 installed on the same shaft. rotation 4.
  • the belay device can be configured so that the two ropes 2 are in contact with each other or so that the two ropes 2 and the two cams 5 are separated by a separation flange (not illustrated) .
  • the body 1 comprises two flanges 7 and 8 which define a working space inside which are installed the loop or the loop of rope 2 as well as the cam 5 and the rotation shaft 4.
  • the flanges 7 and 8 are plane and parallel, but it is also possible to provide non-planar and / or non-parallel flanges 7 and 8. It is also possible to provide that the shaft 4 is mounted outside the workspace.
  • the inlet 1a intended to receive the rope loop 2 is delimited by the two flanges 7 and 8, by the blocking element 3 as well as by another element extending between the two flanges, advantageously the shaft 4 but an additional element can be installed to avoid or reduce contact with the tree.
  • the cavity suitable for the passage of the rope loop can be delimited by the second end 5b as illustrated in Figures 5 to 7 , 11 to 13 , 17 to 20 and 23 .
  • a handle 9 is mounted on one of the flanges, here the flange 7.
  • the handle 9 is mounted movable relative to the body 1, advantageously movable in rotation at least in a first direction of movement from a first position to a second position.
  • the handle 9 defines a first position in which the handle 9 can be move independently with respect to the body 1, that is to say that the movement of the handle 9 has no effect on the movement of the body 1.
  • the handle 9 defines a second position in which the handle 9 can no longer move relative to the body 1. In the example illustrated, the handle 9 moves from the first position to the second position, the displacement being carried out in rotation relative to the body 1. Once the second position is reached, an effort in the first direction of movement causes the body to move with the handle 9.
  • the handle 9 is then stationary relative to the body 1. From the second position, the handle 9 can move relative to the body 1 to the first position.
  • the handle 9 is not mechanically linked to the cam 5, that is to say that the handle 9 is not in mechanical contact on the one hand with the body 1 and on the other hand with the cam 5 for allow movement of the cam 5 relative to the body 1 as in the prior art.
  • the rotation shaft of the handle 9 is the shaft 4 which is mechanically more effective in causing the rotation of the body 1 relative to the cam 5.
  • the rotation of the handle 9 from the first position to the second position has no effect on the cam position 5 relative to the body 1.
  • the handle 9 does not lever between the cam 5 and the body 1.
  • the figures 5 , 6 and 7 illustrate in cross-section the path of a strand of rope 2 inside the belay device.
  • the figure 5 illustrates the installation of the rope loop 2 inside the belay device via the inlet 1a so that the rope loop 2 passes behind the first end 5a of the cam.
  • the end of the rope 2 fixed to the load to be secured leaves the belay device in contact with the rotation shaft 4 or near the rotation shaft 4, for example in contact with the second end 5b of the cam 5 opposite the first end 5a of the cam 5.
  • the flange 8 is absent and illustrated in broken lines for greater clarity.
  • the figure 6 illustrates a configuration where the rope 2 is tensioned, the end of the strand connected to the load to be insured (the vertical strand directed upwards) is supported on the body 1 for example on the shaft 4 and / or on the second end 5b.
  • One force applies upwards and another force applies downwards from the through opening 6.
  • the strand presses on the first end 5a, in contact with the cam 5, and jams the cord 2 between the first end 5a and the blocking element 3.
  • the tensioning of the cord 2 causes the rotation of the cam 5 so as to reach the blocking position of the cord 2 or according to another point of view. the rotation of the body 1 until the rope is blocked.
  • the figure 7 illustrates the rotation of the body 1 with respect to what is illustrated in the figure 6 .
  • the body 1 is rotated relative to the second end 5b so that the downward vertical force applied to the through opening 6 moves away from the blocking element 3 and therefore the stress applied to block the rope 2 decreases .
  • a threshold rotation value Once a threshold rotation value is reached, the force applied by the fastening element on the first end 5a results in an increase in the distance between the first end 5a and the blocking element 3 which allows the rope to slip. 2.
  • the figure 8 illustrates an exploded view of an embodiment of a belay device.
  • the device comprises two flanges 7 and 8 which are connected to each other by means of the blocking element 3.
  • the two flanges 7 and 8 each have two holes 9 which cooperate with two holes 10 in the blocking element 3
  • Two connectors 11 pass through the holes 9 and 10 of the flanges 7 and 8 and of the blocking element 3 which makes it possible to fix together the two flanges 7 and 8 separated by the blocking element 3.
  • the two flange 7 and 8 have an additional hole 13 and the rotation shaft 4 passes through additional holes 13.
  • the cam 5 has first and second opposite ends 5a and 5b separated by an arm 5c. The two ends each define a through opening.
  • the shaft 4 passes through the through opening 14 of the second end 5b.
  • a spring 15 is mounted around the shaft 4.
  • the spring 15 is advantageously installed in the through opening 14 of the second end 5b. This configuration makes it possible to simply form two flanges 7 and 8 mounted fixed relative to one another and which define a working space to inside of which are the rotation shaft 4, the spring 15, the cam 5 and the blocking element 3.
  • the embodiment, illustrated in figure 8 has a handle 9 mounted mobile in rotation, advantageously around the shaft 4.
  • the flange has a projecting element 16 which circulates inside a cavity 17 arranged in the handle 9 so as to allow movement of the handle 9 to the threshold position where the force applied to the handle 9 causes the body 1 to rotate.
  • the handle 9 is mounted on a shaft 18 advantageously extending the shaft 4.
  • the handle 9 cooperates with an additional spring 19 configured to return the handle 9 to the first position.
  • the handle 9 defines a cavity for housing the spring 19 and the cavity can be closed by a cover 20.
  • the cam 5 has a projecting zone 21 which slides on a ramp 22 of the flange 7 or 8 or even on the two flanges.
  • FIGS. 9 and 10 illustrate another embodiment of a belay device in which the handle 9 is advantageously mounted fixed relative to the body 1 so that the rotation of the handle 9 in one direction of rotation or in the opposite direction automatically causes the rotation of body 1 in the direction of rotation or in the opposite direction.
  • a body 1 provided with two flanges 7 and 8 mounted at a distance from each other.
  • the cam 5 is rotatably mounted on the shaft 4.
  • the first end 5a of the cam 5 defines a through opening 6 for the installation of a connection element A.
  • This embodiment can be used with a single cord 2 or with two cords 2.
  • a spring 15 can be used, but it is also possible to provide a configuration without a spring.
  • the device belay shown has a second end 5b defining a through opening 14 whose section is greater than the external section of the shaft 4 which allows to have a rotational movement coupled to another movement of the cam 5.
  • the cam 5 may have only one rotational movement.
  • the through opening 6 does not define a circular section which allows, also using a connection element devoid of circular section to have a better recovery of forces between the cam 5 and the element connection A and therefore better modulation of the sliding of the cord 2.
  • the cam 5 can be mounted mobile only in rotation but it is advantageous that it is mounted mobile in rotation and according to another movement by means of a functional clearance which exists between the cam 5 and the shaft 4 and / or between the shaft 4 and the body 1, for example the two flanges 7/8.
  • the functional play allows better management of the movement of the body relative to the ring when the rope is under stress and is blocked between the ring and the blocking element 3.
  • the second end 5b can move for example in rotation when the first end 5a is blocked for example in abutment against the body 1.
  • the figures 11 , 12 and 13 illustrate three stages in the operation of the belay device.
  • the figure 11 illustrates the installation of the cord 2 in the installation device through the insertion input 1a.
  • the rope 2 passes between the first end 5a and the second end 5b so that the rope 2 presses on the first end 5a of the cam 5 when tensioning the rope 2 which will block the rope 2 between the cam 5 and the blocking element 3.
  • the figure 12 illustrates a position where the cam 5 blocks the rope 2.
  • a vertical upward force is applied by the strand of rope 2 which is supported on the rotation shaft 4 while a vertical downward force is applied by the connection element A on the through opening 6 which rotates the belay device and in particular the body 1 counterclockwise according to the illustrated configuration.
  • the figure 13 illustrates a counterclockwise rotation of the body 1 with respect to what is illustrated in the figure 12 which has the effect of reducing the stress applied to the cord 2 by the first end 5a of the cam 5.
  • the figures 5 , 6 , 7 on the one hand and the figures 11 , 12 , 13 on the other hand illustrate the movement of the rotation shaft 4 inside the through opening 14 of the second end 5b of the cam 5.
  • These figures show that during the rotation of the cam 5, the point d support between the shaft 4 and the spring 15 moves along a path which is not purely circular.
  • the trajectory can be defined by means of a projecting zone 21 which slides along a ramp 22 present on the body 1, here on the flange 8. This configuration is also present in the modes of illustrated with Figures 1 to 8 .
  • the second end 5b does not have a circular external surface so that the stress applied to the second end 5b when the rope is under tension moves the ring towards the blocking element 3 as illustrated in the Figures 1 to 14 and 22 to 23 .
  • the first end 5a comprises the projecting zone 21 which extends perpendicular to the direction connecting the shaft 4 and the first end 5a and in the direction of the blocking element 3 to slide on the bearing face of the flange 8 which defines input 1a.
  • the figure 14 illustrates an exploded view of the embodiment described above.
  • the configuration is identical to that of the figure 8 Unlike the handle 9 which is fixedly mounted on the flange 8.
  • the figures 15 to 21 illustrate another embodiment.
  • the cam 5 is mounted only in rotation around the shaft 4.
  • the body 1 has two flanges 7 and 8 which each define a lumen 23 which follows the path of the first end 5a.
  • the width of the light 23 is greater than the width of the opening through 6, the width being measured in a direction contained in the displacement plane of the cam 5, preferably along the longitudinal axis of the cam 5 which extends perpendicular to the longitudinal axis of the shaft 4.
  • the most large width of the light 23 makes it possible to prevent the connection element A from bearing directly on the body 1.
  • This configuration makes it possible to facilitate the rotation of the body 1 under load by avoiding applying a tensile stress on the body as this happens in the prior art.
  • the body 1 has two flanges 7 and 8 which each define a lumen 23 for the passage of the connection element A.
  • only one of the flanges 7 or 8 defines the lumen 23 while the other flange 8 or 7 does not come opposite the first end 5a.
  • none of the flanges 7 and 8 is opposite the through opening 6 of the first end 5a along an axis parallel to the longitudinal axis of the shaft as illustrated in Figures 1 to 14 .
  • the two flanges are separated by the cam 5, by the blocking element 3 and by spacer 25.
  • the lights 23 define an arc of a circle whose center is defined by the rotation shaft 4.
  • Other forms of lights 23 are possible as long as they avoid a resumption of force of the connection element A by the body 1. If the belay device is configured so that the first end 5a of the cam 5 performs a more complex movement with a simple rotation, the shape of the lights 23 can be adapted in order to follow the shape of the trajectory of the first end 5a.
  • the lumen 23 delimits a ramp 22 which cooperates with a projecting zone 21 of the cam 5 to define the trajectory of the cam 5.
  • the lumen 23 extends up to an edge of a flange to allow installation and removal of the first end 5a of rope. It is also possible to combine the various embodiments illustrated to obtain a cam 5 mounted mobile only in rotation in a belay device devoid of light 23 and possibly of ramp 22 and protruding area 21 which slides on the ramp 22.
  • the belay device has an additional fastening element 24 of the two flanges between them.
  • the first end 5a defines a closed ring around the through opening 6 to increase the mechanical resistance.
  • the cam 5 is advantageously made of metallic material, preferably steel or aluminum alloy.
  • the two flanges 7 and 8 are advantageously made of metallic material, preferably steel or aluminum alloy.
  • the ring is configured to allow movement of the rope in one direction and in another.
  • the outer wall of the ring is preferably devoid of pins to prevent the rope from flowing only in one direction in contact with the first end of the cam.
  • the outer wall of the ring is smooth and can define a smooth groove. It is also possible to provide that the external wall is textured to increase the quality of the contact between the rope and the ring and thus facilitate the automatic blocking of the belay device when the rope strand tends to move the ring towards the blocking element 3.
  • the belay device is associated with a connection element A in order to form a belay system.
  • the belay system is fixed to a fixing point which can be worn by the user, for example a harness, or which can be an anchoring point as defined above.
  • the connection element A is fixed on the one hand to the anchoring point and on the other hand in the through opening 6.
  • the cord 2 being energized, it seeks to approach a rectilinear configuration so that it comes into contact with two distinct points of the introduction input 1a and in particular the blocking element 3. This bringing into contact under stress rotates the body 1 in a position where the force applied to the first end 5a also applies a stress to the rope 2 in the direction of the blocking element 3 which has the effect of blocking the rope 2 almost automatically this which improves safety.
  • the rope applies a stress to the cam so as to jam the cam and therefore the rope against the body.
  • Two substantially identical forces of opposite intensities apply respectively to the body and to the cam to block the rope.
  • the securing of the belay device is carried out by directly connecting the body with the fixing point, that is to say that the connection element A is coupled to a fixing orifice which is arranged in the body. Any rotation of the belay device of the prior art has no effect.
  • a fixing orifice is provided in the cam 5.
  • the rope 2 is always mounted on the cam 5 so as to be able to slide.
  • the stress applied by the rope 2 under tension and which presses the cam 5 against the body 1 can be modulated by rotating the body 1 relative to the cam 5 which is made possible by fixing the belay device by the cam 5 and not by the body 1.
  • the extension of the section of the through opening 6 along an axis parallel to the longitudinal axis of the shaft 4 is free of screws. opposite the body 1 which makes it possible to prevent the connection element A from coming to bear on the body 1 which would have the effect of making the movement of the body 1 relative to the cam 5 more difficult.
  • the half of the section of the through opening 6 which is furthest from the rotation shaft 4 is devoid of opposite with the body 1 to reduce the risks of direct contact between the connection element A and the body 1.
  • connection element A is installed in the through opening 6 and it applies a force which tends to move the first end 5a away from the first opening 1a which can be materialized by a plane connecting the longitudinal axis of the shaft 4 and the blocking element 3.
  • the force applied by the connection element A being directed to move away from the rotation shaft 4, the blocking of the connection element A with the body 1 can only be done in the most distant half of the rotation shaft 4.
  • At least one loop of rope 2 is introduced into the belay device so that a strand passes between the rotation shaft 4 and the first end 5a of the cam 5 and that the strand passes behind the first end 5a of the cam 5 to exit through the insertion inlet 1a.
  • the rope 2 is tensioned which causes the rotation of the cam 5 so as to block the rope 2 between the blocking element 3 and the first end 5a of the cam 5.
  • the force applied by the load to be insured generates a force on the rotation shaft 4 while the force applied by the connection element A generates a substantially opposite force which causes the rotation of the body 1 relative to the cam 5 or the rotation of the cam 5 relative to the body 1 so that the force applied by the connection element A generates a force which presses the rope 2 against the blocking element 3 which blocks the rope 2.
  • the user can rotate the body 1 which makes it possible to move the components of the forces applied by the load to be insured and by the connection element A.
  • the rotation of the body 1 makes it possible to reduce the stress applied on the rope 2 up to at a threshold position where the rope 2 can slide into the belay device.
  • the threshold position varies as a function of the diameter of the cord 2 and of the outer covering of the cord 2 and of the blocking element 3.
  • the rotation shaft 4 is placed in contact with or near the strand of rope which is connected to the load to be insured and not in contact or near the strand of so-called "soft" rope, that is to say a strand of rope intended to be held by the user's hand.
  • the figures 22 and 23 show an embodiment in which the belay device is configured for two strands of rope.
  • the device has a first flange 7 separating two second flanges 8a, 8b.
  • the body 1 defines two inputs 1a which are suitable for the insertion of two loops of rope.
  • the configuration of the belay device is doubled with in particular two rings which will cooperate with two blocking elements 3 to block the two ropes.
  • the two rings are mounted on the same arm of the cam so that they move in the same way relative to the flanges.
  • the two cord loops are separated by the first flange 7.
  • the two cord loops form around the two rings.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Lowering Means (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Transmission Devices (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
EP19212358.6A 2018-11-28 2019-11-28 Sicherungsvorrichtung Withdrawn EP3659675A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1872028A FR3088828B1 (fr) 2018-11-28 2018-11-28 Dispositif d’assurage

Publications (2)

Publication Number Publication Date
EP3659675A2 true EP3659675A2 (de) 2020-06-03
EP3659675A3 EP3659675A3 (de) 2020-06-10

Family

ID=66776413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19212358.6A Withdrawn EP3659675A3 (de) 2018-11-28 2019-11-28 Sicherungsvorrichtung

Country Status (3)

Country Link
US (1) US20200164232A1 (de)
EP (1) EP3659675A3 (de)
FR (1) FR3088828B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12017895B2 (en) * 2020-07-16 2024-06-25 Merritt Arboreal Design, Inc. Load support device and system
US11691558B2 (en) * 2020-11-19 2023-07-04 Arthur Joseph Elftmann, JR. Load securing tie down clamp

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1021986A (en) 1911-08-21 1912-04-02 John A Johnson Clamping device.
DE391582C (de) 1921-11-21 1924-03-11 Antoine Joseph Marius Barthele Gleitrollenklemme fuer Rettungszwecke
DE2412987A1 (de) 1974-03-18 1975-10-02 Hans Dipl Ing Kuehl Loesbare klemmeinrichtung fuer sicherungsseile, insbesondere fuer bergsteiger
IT1196979B (it) 1985-08-19 1988-11-25 Helmut Antz Elemento frenafune
FR2647099A1 (fr) 1989-05-19 1990-11-23 Petzl Ets Dispositif d'assurance autobloquant pour corde
US20080245611A1 (en) 2007-04-07 2008-10-09 Gregory Lee Klingler Self-Belay And Rappel Device And Methods Of Use
WO2010049597A1 (fr) 2008-10-28 2010-05-06 Claude Boulliat Dispositif assureur-descendeur, avec manette de pilotage a reglage ergonomique, pour tous diametres de cordes en simple ou en double, auto bloquant, anti-panique et verrouillable en position
WO2011007225A1 (en) 2009-07-15 2011-01-20 Aludesign S.P.A. Safety device
DE202017102996U1 (de) 2017-05-18 2017-06-26 Mammut Sports Group Ag Fehlbedienungssicherung und Sicherungsgerät
EP3263182A1 (de) 2016-07-01 2018-01-03 Pascal Gasteiger Vorrichtung zur sicherung eines kletterseiles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748078B1 (fr) * 1996-04-25 1998-06-12 Zedel Poulie a flasque pivotant et a bloqueur integre
FR2884429B1 (fr) * 2005-04-19 2007-06-08 Simond Soc Par Actions Simplif Dispositif de freinage et blocage de corde
FR2938771B1 (fr) * 2008-11-27 2010-12-31 Zedel Dispositif bloqueur a came pour l'assurage sur corde fixe
US9138603B2 (en) * 2012-02-23 2015-09-22 Honeywell International Inc. Rope adjuster with fast rope replacement device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1021986A (en) 1911-08-21 1912-04-02 John A Johnson Clamping device.
DE391582C (de) 1921-11-21 1924-03-11 Antoine Joseph Marius Barthele Gleitrollenklemme fuer Rettungszwecke
DE2412987A1 (de) 1974-03-18 1975-10-02 Hans Dipl Ing Kuehl Loesbare klemmeinrichtung fuer sicherungsseile, insbesondere fuer bergsteiger
IT1196979B (it) 1985-08-19 1988-11-25 Helmut Antz Elemento frenafune
FR2647099A1 (fr) 1989-05-19 1990-11-23 Petzl Ets Dispositif d'assurance autobloquant pour corde
US20080245611A1 (en) 2007-04-07 2008-10-09 Gregory Lee Klingler Self-Belay And Rappel Device And Methods Of Use
WO2010049597A1 (fr) 2008-10-28 2010-05-06 Claude Boulliat Dispositif assureur-descendeur, avec manette de pilotage a reglage ergonomique, pour tous diametres de cordes en simple ou en double, auto bloquant, anti-panique et verrouillable en position
WO2011007225A1 (en) 2009-07-15 2011-01-20 Aludesign S.P.A. Safety device
EP3263182A1 (de) 2016-07-01 2018-01-03 Pascal Gasteiger Vorrichtung zur sicherung eines kletterseiles
DE202017102996U1 (de) 2017-05-18 2017-06-26 Mammut Sports Group Ag Fehlbedienungssicherung und Sicherungsgerät

Also Published As

Publication number Publication date
US20200164232A1 (en) 2020-05-28
EP3659675A3 (de) 2020-06-10
FR3088828A1 (fr) 2020-05-29
FR3088828B1 (fr) 2022-06-24

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