EP4360716A1 - Mobile fall protection device - Google Patents

Abstract

Mobile fall arrest device (1) for fixing support (SF), comprising a main body (2), a retaining groove, in which the fixing support (SF) is retained by a lever (3) pivotable between an open position and a closed position, said lever (3) comprising a locking cam (30) and a hole (31) for receiving a carabiner or the like, said device (1) comprising a movable stop pivoting between a so-called operating position and an interval of so-called release position, characterized in that said lever (3) and said stop comprise means of cooperation by drive when the stop is in the release position interval and when the lever (3) is in a position between a position intermediate and the open position.

Description

The present invention relates to an individual safety device against falls when working at height. More specifically, the present invention relates to a mobile fall arrest device configured to secure a fixing support and, in particular, a flexible and vertical lashing support or a flexible or rigid anchoring support, such as a cable or a rope.

It is known that personnel who have to work on installations or work at height and, for this purpose, climb or descend on pylons or poles, are equipped with a safety device against dangerous falls.

This is, for example, the case for workers on construction sites at height, on elevated surfaces or on sloping roofs.

It is therefore necessary to secure these personnel so that they can get on and off freely, without risk of falling, and work on their activity.

We already know devices consisting of a rope or a lashing cable arranged vertically, called "lifeline", to which a user is connected so as to be able to move up and down on an inclined plane , or any other dangerous environment. For this purpose, he is equipped with personal protective equipment connecting him to the “lifeline” and including a harness attached to a mobile fall arrest device. This type of device is known by the acronym AMSAF which means “Mobile fall arrester on flexible anchorage support”, or by the acronym AMSAR which means “Mobile fall arrester on rigid anchorage support”.

However, the known devices do not give complete satisfaction in terms of their comfort of use and their reliability. In particular, it is possible that the user inadvertently releases the mobile fall arrest device from the “lifeline” during its use.

Such a possibility poses a high risk to user safety, especially if the user is inexperienced.

A fall arrest device is taught in the document EP1359980 , to which the user can connect via a harness. Such a fall arrest device comprises a retaining groove in which a fixing support, such as a cable or a rope, is held. In the event of a fall, the device is prevented from sliding by a lever which, via a locking cam, engages the rope thus blocking its sliding inside said device. The lever can pivot between an open position, in which the cable can be inserted/removed from the device, and a closed position, in which the lever, and in particular its locking cam, is engaged with the cable to prevent its sliding in the case of a fall of the user. Such a device can further comprise a stop limiting the rotation of the lever in an intermediate position, when moving from the closed position to the open position, this intermediate position authorizing the movement of the device along the fixing support and preventing the fixing support from leaving the device. A user can thus move the device along the “lifeline”, facilitating their movements.

However, even if this type of fall arrest device includes a stop for the contact of the lever and allows it to stop in the intermediate position, the user can inadvertently release the fall arrest device from the fixing support constituting the "lifeline" when the device is in the intermediate position of the lever, that is to say when the lever is in contact with the stop in its intermediate position, there is the condition of possible removal of the fall arrest device by forcing the rotation of the stop.

This is possible because, by acting on the stop, the user can transmit rotation to the lever in contact with the stop itself.

Indeed, the contact between the stop and the lever occurs at a lever surface inclined relative to the stop and therefore not effectively preventing the rotation of the stop. In other words, in the intermediate position, the stop is in contact with a surface of the lever which does not effectively prevent the movement of the stop and, therefore, the user can inadvertently move the stop from its position active, in which the rotation of the lever is limited.

Moving the stopper from its active position allows the lever to move to its open position and then remove the fall arrest device from the cable or rope tie-down.

Also, the device described in US5265696 is provided with a stop and, in particular, with a locking lever called in English sleeve lock. However, also in this device, when the lever is in contact with the stop, the rotation of the stop is not prevented. In fact, also in the device according to US5265696 , the lever does not effectively prevent the stopper from moving and, therefore, the user may inadvertently move the stopper from its active position in which it limits the rotation of the lever.

The document WO2017072667 teaches a solution making it possible to increase the level of safety given by known fall arrest devices. In particular, this document describes a mobile fall arrest device which is particularly safe, reliable and simple to use and implement, which can be used in complete safety, without the possibility for the user, in the event of distraction, to inadvertently manipulate the device so that it opens unexpectedly and therefore leaves the “life line”.

This document WO2017072667 thus describes a mobile fall arrest device for a fixing support (such as a cable or ropes forming a “lifeline”), said device comprising a main body having a passage for insertion/removal of the fixing bracket into/from a retaining groove, in which the fixing bracket is retained via a lever rotating between an open position and a closed position. One of the ends of the lever comprises, in a known manner, a locking cam and the other free end comprises a hole intended to receive a carabiner, or similar connecting elements. The device further comprises a movable stop between an active or operating position, in which it limits the rotation of the lever in an intermediate position when the lever is moved from the closed position to the open position, and a release or release position in which it allows the rotation of the lever to the open position. In other words, the limit can be retracted, that is, moved from the operating position, and therefore no longer interfere with the movement of the lever towards its own open position. Said lever comprises at least one stop surface cooperating, in an intermediate position, with at least one corresponding engagement surface of the stop to lock the stop in its own operating position (that is to say prevent its movement towards the release position), the stop surface being inclined relative to the trajectory of movement of the stop (and in particular of its engagement surface) from the active position towards the release position. In fact, such a stop surface makes it possible to block the movement of the stop towards the release position. A spring keeps the stop in the position to block the movement of the lever.

This mobile fall arrest device taught in the document WO2017072667 allows a user to make a first movement to move the stopper from the operating position to the release position, in opposition to the elastic return force of the spring, then, while maintaining the stopper in the release position, perform a second movement to put the lever in the open position. The mounting bracket or “lifeline” can then be removed from the retaining groove of the device. The fact of having to carry out two distinct consecutive movements to release the fixing support is considered to provide satisfactory security against accidental opening of the device.

This device, although presenting several improvements with regard to the prior art, nevertheless presents several drawbacks.

In fact, this device requires the use of two hands to be opened, a first hand for the first manipulation and maintaining the stop in the release position, a second hand to move the lever, then with the first hand to remove the device fixing support.

A second disadvantage lies in the fact that the user who wears gloves on a construction site or in a particularly cold environment may have difficulty in perform precise, fine movements with numb fingers or thick gloves. This results in several attempts to carry out this manipulation to engage or release the fixing support of the device.

A third disadvantage lies in the fact that a user must normally always be in a secure situation. It can thus be held on the fixing support by wearing a harness connected to the device by a lanyard ending in a carabiner or an equivalent connecting element, the device being securely attached to the fixing support as mentioned above.

In the case of changing the fixing support, it is expected, to ensure satisfactory safety, that the user attaches to another fixing support temporarily before removing the fixing support from the device. It happens that, subjected to a stressful or tiring environment, such as for example in the cold, users forget to secure themselves and think that their lanyard being connected to the device, they are secure, forgetting that said device, when releasing the support fixing or during its engagement, no longer secures them.

This short period of time during which the device has a lever in the open position is then dangerous. The user at this time is not yet secured to the mounting bracket. It is important that the user is aware of this state of affairs to limit accidents and does not forget to attach themselves temporarily to a mounting support.

It is the object of the invention to propose a mobile fall arrest device for a fixing support having all the aforementioned advantages, while not presenting the disadvantages of existing solutions.

In this context, the aim of the invention is to propose a device that is easy to handle by a user, to open and close in order to secure or detach it from a fixing support.

The aim of the invention is to provide such a device in a few parts, therefore economical and robust.

The purpose of the invention is to remind the user that, during this opening or release, it is no longer securely connected to the fixing support.

The invention also relates to a method of mounting such a device on a fixing support.

The invention further relates to a method of dismantling such a device from a fixing support.

To this end, the invention relates to a mobile fall arrest device configured to cooperate with a fixing support (such as a cable or ropes forming a “lifeline”), said device comprising a main body having a passage for the insertion/removal of the mounting bracket into/from a retaining groove, in which the fixing support is retained by means of a pivoting lever between an open position and a closed position, said lever comprising at one free end a locking cam and at the other free end a hole intended to receive a carabiner or similar connecting elements, said device further comprising a movable stop pivoting between a so-called active or operating position, in which said stop limits the rotation of the lever between the closed position and an intermediate position, and an interval of so-called release position or release, in which said stop authorizes the rotation of the lever to the open position, said lever and said stop comprising means of cooperation by driving said stop and said lever when the stop is in the release position interval and when the lever is in a position between the intermediate position and the open position.

This allows the device to secure the user once a fixing support is inserted into the device and the stop is in the operating position. To release the fixing support, a user must carry out a first manipulation by releasing the stop from its operating position and positioning it in the release position interval. The user must then pivot the lever until it comes into contact with the stop so that the lever and the stop cooperate by drive between the intermediate position and the open position. Thus, it is no longer necessary to hold both the lever and the stop, the movement of one causing the movement of the other. This configuration then allows the user to carry out two successive operations, a guarantee of security, while simplifying the actions to be carried out.

According to another characteristic of the invention, the device comprises means for locking the stop in the operating position in the form of a finger of the stop cooperating with a slot in the main body, the finger being held in the slot by elastic return means.

This makes it possible to maintain the stop in the operating position, unless the finger is disengaged from the light by going against the elastic return means.

According to another characteristic of the invention, the locking means cooperate perpendicularly to the pivot plane of the stop, the finger being able to be pushed out of the slot.

According to another characteristic of the invention, the finger is mounted on a rod, the light being through and continuing through a through groove configured so that, when the finger comes out of the light, the rod can move in the groove when the stop travels through the release position interval.

This makes it possible to simplify manipulations, the user being able to press laterally on the locking means to disengage the stop from the operating position. This prevents accidental disengagement and locking occurs automatically when the stopper reaches the operating position, which increases user safety.

According to another characteristic of the invention, the lever comprises a stop surface cooperating, in the intermediate position, with a corresponding engagement pin of the stop to prevent the movement of said lever between the intermediate position and the open position.

According to another characteristic of the invention, the means of cooperation by driving the lever and the stop are formed by at least one protuberance of the stop cooperating with at least one housing of the lever.

According to another characteristic of the invention, the at least one protuberance of the stop is formed by the engagement pin.

According to another alternative characteristic of the invention, the at least one protuberance of the stop is formed by at least one gear tooth, and the at least one housing of the lever is formed by intervals between teeth of the lever.

According to another characteristic of the invention, the main body comprises a through orifice, the hole in the lever coinciding with the orifice in the main body when the lever is in a position between the closed position and the intermediate position to allow insertion or the presence of a carabiner or similar connecting elements in the hole, the hole of the lever being obscured by the main body when the lever is in the open position, to then prevent the insertion or presence of a carabiner or connecting elements similar connection in the hole.

This means that the user must remove the carabiner before putting the device in the open position. Thus, when inserting or removing the device mounting bracket, the user cannot be connected to the device. This then prevents it from mistakenly believing itself to be in a configuration secured by the device.

According to another characteristic of the invention, the device comprises means for holding the lever in the open position.

According to another characteristic of the invention, the means for maintaining the lever in the open position are formed of the finger of the stop cooperating with a complementary slot in the main body, the finger being held in the complementary slot by elastic return means.

Thus, the user can manipulate the device to position it on the fixing support without having to voluntarily hold the elements (stop, lever) of the device in a particular position, thus leaving his hands free.

According to another characteristic of the invention, the device comprises means for maintaining the lever in the closed position, in particular in the form of a pivoting trigger to come to bear against a support zone of the lever to maintain it in the closed position.

Thus, the user can carry out actions while being assured that the device is in position for blocking the sliding of the fixing support in said device.

• [Fig.1] est une vue schématique du dispositif selon l'invention, en position d'utilisation avec un support de fixation de type corde inséré dedans, vue de face, c'est-à-dire présentant le côté d'insertion du support de fixation, et dans une configuration permettant le blocage du coulissement du support de fixation à l'intérieur du dispositif ;
• [Fig.2] est une vue schématique du dispositif de la [Fig.1], selon un angle de vue de derrière, c'est-à-dire présentant le côté opposé au côté d'insertion du support de fixation ;
• [Fig.3] est une vue schématique du dispositif de la [Fig.1], vu de face, et dans une configuration permettant l'insertion du support de fixation à l'intérieur du dispositif ;
• [Fig.4] est une vue schématique de détail de la [Fig.1], selon un angle de vue en perspective haut arrière ;
• [Fig.5] est une vue schématique de détail de la [Fig.3], selon un angle de vue en perspective haut arrière ;
• [Fig.6] est une vue schématique du dispositif de la [Fig.1], vu de face, avec un écorché du corps principal permettant de voir l'intérieur du dispositif, dans lequel un mousqueton est engagé, en position intermédiaire ;
• [Fig.7] est une vue schématique de détail de la [Fig.3], vu de face, avec un écorché du corps principal permettant de voir l'intérieur du dispositif et un écorché de la butée du dispositif ;
• [Fig.8] est une vue schématique partielle du dispositif de la [Fig.1], vu de face, avec un écorché du corps principal permettant de voir l'intérieur du dispositif, verrouillé dans une configuration permettant le blocage du coulissement du support de fixation à l'intérieur du dispositif ;
• [Fig.9] est une vue schématique partielle d'un mode de réalisation alternatif des moyens de coopération par entrainement d'un dispositif selon l'invention.

Other aims and advantages of the present invention will become apparent during the description which follows, referring to the attached drawings illustrating an exemplary embodiment and in which:

• [ Fig.1 ] is a schematic view of the device according to the invention, in the position of use with a rope-type fixing support inserted therein, seen from the front, that is to say showing the insertion side of the fixing support, and in a configuration allowing the blocking of the sliding of the fixing support inside the device;
• [ Fig.2 ] is a schematic view of the device of the [ Fig.1 ], from an angle of view from behind, that is to say presenting the side opposite to the insertion side of the fixing support;
• [ Fig.3 ] is a schematic view of the device of the [ Fig.1 ], seen from the front, and in a configuration allowing the insertion of the fixing support inside the device;
• [ Fig.4 ] is a detailed schematic view of the [ Fig.1 ], from a high rear perspective viewing angle;
• [ Fig.5 ] is a detailed schematic view of the [ Fig.3 ], from a high rear perspective viewing angle;
• [ Fig.6 ] is a schematic view of the device of the [ Fig.1 ], seen from the front, with a cutaway of the main body allowing you to see the inside of the device, in which a carabiner is engaged, in the intermediate position;
• [ Fig.7 ] is a detailed schematic view of the [ Fig.3 ], seen from the front, with a cutaway of the main body allowing the inside of the device to be seen and a cutaway of the device's stop;
• [ Fig.8 ] is a partial schematic view of the device of the [ Fig.1 ], seen from the front, with a cutaway of the main body allowing the interior of the device to be seen, locked in a configuration allowing the blocking of the sliding of the fixing support inside the device;
• [ Fig.9 ] is a partial schematic view of an alternative embodiment of the means of cooperation by driving a device according to the invention.

The invention relates to a mobile fall arrest device 1 configured to cooperate with a fixing support SF such as a cable or ropes forming a “lifeline”.

Such a mobile fall arrest device 1 is generally part of individual equipment for protection against falls from height which comprises, in addition to said fall arrest device 1, a harness comprising at least one anchor ring with a hooking carabiner M, or similar connecting elements.

The fall arrest device 1 may be intended to be removably connected to a vertical fixing support.

The mobile fall arrest device 1, hereinafter also called only device 1, in its position of use, that is to say connected to the harness, can be voluntarily moved up or down by normal sliding along the SF mounting bracket.

In the event of a fall, corresponding to an accelerated descent speed, the mobile fall arrest device 1 locks on the fixing support SF, here a cable SF.

It will be understood that the user will therefore be able to go up or down along a pole by letting the device slide up or down along the SF cable, while he will be protected against falls since the fall arrest device 1 is blocked on the cable constituting the lashing support.

One embodiment of the invention is illustrated in the figures 1 to 8 , in use position. With reference to the drawings, the [ Fig.1 ] represents the device 1 from the front, in a vertical position, the top of the device being on the top of the [ Fig.1 ]. There [ Fig.2 ] presents device 1 seen from behind.

This device 1 comprises a main body 2 here comprising a plate folded at its two lateral ends 20a, 20b to present a “C” shaped section, the two ends 20a, 20b being placed opposite each other to form a passage for insertion /the removal of the SF cable so as to position it in a retaining groove 21. The plate also includes an orifice 22 passing through the front and rear faces, which will be discussed later.

This retaining groove 21 can be formed in a known manner directly by the plate, or be partially delimited by a complementary element in the form of a rigid blade pivotally mounted 23 at the bottom of the groove 21, as illustrated in the figures.

As better detailed in what follows, the cable SF is retained in the groove 21 by a lever 3 provided with a locking cam 30 at a free end designed to engage the cable SF and prevent its sliding inside the groove 21, determining de facto the blocking of the fall.

This lever 3 pivots between a so-called open position and a so-called closed position around a first shaft 24 fixedly connected to the main body 2.

The so-called open position corresponds to a configuration in which the cable SF can be inserted or removed from the groove 21 through the passage, as illustrated in the figures 3 And 7 .

The so-called closed position corresponds to a configuration in which the cable SF cannot be inserted or removed from the groove 21 through the passage due to the presence of the lever 3, as illustrated in the figures 1 , 2 , 6 And 8 .

The lever 3 can also be in a so-called intermediate position, described below, in which the cable SF cannot be inserted or removed from the groove 21 through the passage of the due to the presence of lever 3.

The lever 3 includes, at another free end, a hole 31 intended here to receive a carabiner M. The lever 3 also includes a stop surface 32 and a support zone 33 which will be mentioned later.

The device 1 further comprises a movable stop 4 pivoting around a second shaft 25 fixedly connected to the main body 2 along a pivot plane perpendicular to said second shaft 25.

This stop 4 can be formed of parallel plates and fixedly secured by rivets between them, as particularly visible on the figures 4 And 5 . At one free end between these two plates is placed an engagement pin 40, and at the other free end is placed a roller which can come to bear against the cable SF.

This stop 4 can have a so-called operating position, in which said stop 4 limits the rotation of the lever 3 between the closed position and an intermediate position, and does not allow it to reach the open position.

The stop 4 can pivot to reach a so-called release or release position interval in which said stop 4 authorizes the rotation of the lever 3 to the open position.

The device 1 may include locking means 5 in the operating position of the stop 4, in the form of a finger 50 of the stop 4 cooperating with a slot 51 of the main body 2, the finger 50 being held in the slot 51 by elastic return means such as for example a spiral or coil spring.

The locking means 5 can cooperate perpendicularly to the pivot plane of the stop 4, that is to say that the finger 50 and the slot 51 extend from the front towards the rear of the device 1 as illustrated in the [ Fig.4 ], the finger 50 can be pushed out of the light 51 which passes through.

The finger 50 can be mounted on a rod 52, the light 51 being able to pass through the entire rear plate of the main body 2. This light 51 can continue through a groove 53 passing through the entire rear plate of the main body 2, as illustrated in the figures 4 And 5 . This groove 53 can be configured so that when the finger 50 is pushed out of the slot 51, the rod 52 can move in the groove 53 when the stop 4 moves in the release position interval.

In order to push the finger 50 out of the light 51, the user can press a push button 54 by compressing the elastic return means mentioned above.

The lever 3 can come to the intermediate position, in which the stop 4 prevents the lever 3 from coming to the open position.

In fact, when the stop 4 is in the operating position, the stop surface 32 of the lever 3 comes into contact with the corresponding engagement pin 40 of the stop 4, which blocks the stroke of the lever 3 to prevent the movement of said lever 3 between the intermediate position and the open position. Thus, the stop 4 limits, in this configuration, the travel of the lever 3 to a movement between the closed position and the intermediate position.

Furthermore, in the event of tension in the SF cable during a fall, the SF cable presses on the stop 4, the engagement pin 40 then pushes the lever 3 to press the locking cam 30 against the SF cable and block the sliding of said SF cable, preventing it from falling.

The lever 3 and the stop 4 comprise means of cooperation by driving 6 of said stop 4 and said lever 3 when the stop 4 is in the release position interval and when the lever 3 is in a position between the intermediate position and the open position.

The means of cooperation by drive 6 of the lever 3 and the stop 4 are formed by at least one protuberance 60 of the stop 4 cooperating with at least one housing 61 of the lever 3, as illustrated in the figures 6 , 7 And 8 .

The protuberance 60 can be formed by the engagement pin 40.

The at least one protuberance 60 of the stop 4 can also be formed by at least one gear tooth, and the at least one housing 61 of the lever 3 can be formed by intervals between teeth of the lever. An example is illustrated in [ Fig.9 ].

The main body 2 may include a through orifice 22, as indicated previously.

This orifice 22 is configured so that the hole 31 of the lever 3 coincides with the orifice 22 when the lever 3 is in a position between the closed position and the intermediate position, which allows the insertion or presence of an M carabiner in hole 31, as illustrated in figures 1 , 2 , 6 And 8 . On the contrary, the hole 31 of the lever 3 is obscured and covered by the plate of the main body 2 when the lever 3 is in the open position, which then prevents the insertion or the presence of a carabiner M in the hole 31, as illustrated in figures 3 And 7 .

The device 1 may include means for holding the lever in the open position 7, for example in the form of the finger 50 of the locking means 5 of the stop 4 cooperating with a complementary light 70, of similar construction to the light 51 of the means of locking 5, the finger 50 being held in the complementary slot 70 by elastic return means.

The device 1 may include means for maintaining the lever 3 in the closed position 8, in particular in the form of a trigger 80 pivoting around a third shaft 26 fixedly connected to the main body 2, to come to bear against the zone of pressing the lever 3 mentioned above, to keep it in the closed position, as illustrated in [ Fig.8 ]

The device 1 also comprises a spring 10 forming known means of elastic return of lever 3 towards groove 21.

The first, second and possibly third shafts 24, 25, 26 of the main body 2 are advantageously parallel to each other.

Claims (13)

Mobile fall arrest device (1) configured to cooperate with a fixing support (SF), said device (1) comprising a main body (2) having a passage for insertion/removal of the fixing support (SF) into/d 'a retaining groove (21), in which the fixing support (SF) is retained by means of a lever (3) pivoting between an open position and a closed position, said lever (3) comprising at one end free a locking cam (30) and at the other free end a hole (31) intended to receive a carabiner (M) or similar connecting elements, said device (1) further comprising a movable stop (4) pivoting between a so-called operating position, in which said stop (4) limits the rotation of the lever (3) between the closed position and an intermediate position, and a so-called release position interval in which said stop (4) authorizes the rotation of the lever (3) to the open position, characterized in that said lever (3) and said stop (4) comprise means of cooperation by driving (6) of said stop (4) and said lever (3) when the stop (4) is in the release position interval and when the lever (3) is in a position between the intermediate position and the open position. Mobile fall arrest device (1) according to claim 1, characterized in that it comprises locking means (5) in the operating position of the stop (4) in the form of a finger (50) of the stop ( 4) cooperating with a slot (51) of the main body (2), the finger (50) being held in the slot (51) by elastic return means. Mobile fall arrest device (1) according to claim 2, characterized in that the locking means (5) cooperate perpendicularly to the pivot plane of the stop (4), the finger (50) being able to be pushed out of the slot (51). ). Mobile fall arrest device (1) according to claim 3, characterized in that the finger (50) is mounted on a rod (52), the light (51) being through and continuing by a through groove (53) configured so that , when the finger (50) comes out of the slot (51), the rod (52) can move in the groove (53) when the stop (4) travels through the release position interval. Mobile fall arrest device (1) according to one of claims 1 to 4, characterized in that the lever (3) comprises a stop surface (32) cooperating, in an intermediate position, with an engagement pin (40) corresponding to the stop (4) to prevent the movement of said lever (3) between the intermediate position and the open position. Mobile fall arrest device (1) according to one of claims 1 to 5, characterized in that the means of cooperation by driving (6) of the lever (3) and the stop (4) are formed by at least one protuberance ( 60) of the stop (4) cooperating with at least one housing (61) of the lever (3). Mobile fall arrest device (1) according to claim 6, characterized in that the at least one protuberance (60) of the stop (4) is formed by the engagement pin (40). Mobile fall arrest device (1) according to claim 6, characterized in that the at least one protuberance (60) of the stop (4) is formed by at least one gear tooth, and the at least one housing (61) of the lever (3) is formed by intervals between teeth of the lever (3). Mobile fall arrest device (1) according to one of claims 1 to 8, characterized in that the main body (2) has a through orifice (22), the hole (31) of the lever (3) coinciding with the orifice (22) when the lever (3) is in a position between the closed position and the intermediate position, the hole (31) of the lever (3) being obscured by the main body (2) when the lever (3) is in the open position. Mobile fall arrest device (1) according to one of claims 1 to 9, characterized in that it comprises means for holding the lever in the open position (7). Mobile fall arrest device (1) according to claim 10, characterized in that the means for maintaining the lever in the open position (7) are formed of the finger (50) of the stop (4) cooperating with a complementary light (70) of the main body (2). Mobile fall arrest device (1) according to one of claims 1 to 11, characterized in that it comprises means for maintaining the lever in the closed position (8). Mobile fall arrest device (1) according to claim 12, characterized in that the means for maintaining the lever in the closed position (8) are formed by a trigger (80) pivoting to come to bear against a support zone (33) of the lever (3) to keep it in the closed position.

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