EP4353942A1 - Vorrichtung zur verwaltung der nutzung einer leiter - Google Patents

Vorrichtung zur verwaltung der nutzung einer leiter Download PDF

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Publication number
EP4353942A1
EP4353942A1 EP23202852.2A EP23202852A EP4353942A1 EP 4353942 A1 EP4353942 A1 EP 4353942A1 EP 23202852 A EP23202852 A EP 23202852A EP 4353942 A1 EP4353942 A1 EP 4353942A1
Authority
EP
European Patent Office
Prior art keywords
ladder
panel
front wall
transverse edge
cover
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.)
Pending
Application number
EP23202852.2A
Other languages
English (en)
French (fr)
Inventor
Christian PELSER
Charles Coutier
Virginie COUTIER
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.)
Coutier Industrie SARL
Original Assignee
Coutier Industrie SARL
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 Coutier Industrie SARL filed Critical Coutier Industrie SARL
Publication of EP4353942A1 publication Critical patent/EP4353942A1/de
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/006—Devices for preventing access

Definitions

  • the present invention relates to the management of the use of a ladder, inclined or not, to prohibit its use by any unauthorized person.
  • the present invention intends to propose a device for blocking access to a ladder which can not only effectively ensure a ban on use by any unauthorized person but also ensure that the authorized user can use the ladder in safety and with as much comfort as possible.
  • the subject of the invention is a device for managing the use of a ladder extending between a lower level and a higher level, comprising a panel and means for connecting the panel to the ladder which maintain the panel, in a first state, applied against a face of the ladder opposite its access face and in a second state, distant from this face of the ladder .
  • the panel comprises a first transverse edge and a second transverse edge, and, between these, a plurality of front walls extending, when the panel is in its first state, each in the vicinity of a rung of the ladder for prohibit its use.
  • the means for connecting the panel to the ladder comprise an articulation with an axis parallel to the rungs of the ladder
  • the front walls comprise a first front wall adjacent to the first transverse edge and the first front wall is articulated on a supporting structure of the panel to have a lower part movable between an advanced position near the ladder and a rearward position away from the ladder.
  • the first front wall has an upper part provided with a lever arranged to bear against the ladder when the panel is in its first state so as to maintain said lower part of the first front wall in its advanced position and which is detached of the ladder when the panel is in its second state to release the pivoting of said lower part of the front wall towards its rearward position.
  • the panel When the panel is in its first state, it is pressed against the ladder and makes it difficult for an unauthorized user to place their feet on the rungs to climb up the ladder, or even completely prevents the user from placing the feet on the bars.
  • the panel When the panel is in the second state, the spacing of the panel relative to the scale and the movement of the first front wall in the rearward position makes it possible to obtain a spacing of the first front wall of the panel relative to the bar of neighboring ladder such that the user can place their foot correctly, safely and comfortable on said ladder rung.
  • the panel can take on different shapes.
  • the simplest is a simple sheet metal mounted on a frame or box to give it sufficient rigidity. It can take a more complex shape, in particular to constitute an at least partial sealing of the inter-bar space, either by stamping, or by cutting a box panel or curved (folded) in the longitudinal direction for the passage of the bars, etc.
  • each of the front walls is of a shape such that it constitutes at least partial closure of the inter-bar space.
  • the axis of the articulation of the scale panel is located below the lower transverse edge of the panel. Tests have in fact shown that this position is the most convenient for the user to, on the one hand, lock and unlock access to the ladder and on the other hand, so that, from the first rungs, he can comfortably place your foot on them.
  • the panel when the ladder is equipped with a crinoline, the panel is provided in the upper part with a cover, of width less than the spacing of the uprights of the ladder, capable of closing at least partially the internal passage crinoline.
  • the lock can be maintained in the open position
  • the device in which the panel is hinged to the ladder in the lower part, is equipped for this purpose with a member for returning said panel against the rear face of the the ladder and a mechanism for retaining the panel in its state separated from the ladder, carried by the end of the cover remote from the panel to cooperate with an element of the ladder, preferably a bar, under which the cover crosses the plane of the ladder.
  • the envisaged retaining mechanism resides in a retractable stop normally projecting above the free end of the panel, erasable, either by a rung of the ladder as this end passes, under the latter, when the lock is opened, against the effect of a return member, or by an operating linkage comprising, at the foot of the ladder, a manual actuation member for erasing this stop to allow the folding of the panel under the effect of its return member.
  • the invention proposes to equip the panel with a quarter-turn bolt which is normally engaged in a keeper carried by the ladder.
  • a key for operating the bolt acting either directly on the latter or via a transmission, if the striker (and the possible locking member) is located on the ladder at a level inaccessible by the user at the foot of the ladder and, on the other hand, by a pedal, located on the cover, connected to the bolt by a transmission linkage.
  • the user located at the foot of the ladder and authorized to climb it can release the latch bolt by means of a personal key, possession of which is the mark of his authorization. He then pushes the panel to tilt it around its lower joint until the retaining stop engages. After having climbed the lower rungs of the ladder, he activates the removal of the stop with his foot. The panel is then automatically recalled against the ladder and the bolt engages again in the strike plate.
  • the user When descending, the user, with his foot, on the one hand, activates the pedal to release the bolt from its striker and, on the other hand, pushes the cover towards the rear of the ladder until it reaches the 'engagement of the retaining stop which allows it to continue the descent to the ground. He finally activates the operating member of the stop to clear it in order to allow its passage under the bar and release the folding of the latter against the rear face of the ladder.
  • the invention also relates to an access installation comprising a ladder having uprights between which extend bars separated in pairs by an inter-bar space, and a usage management device comprising at least one front wall which has dimensions substantially equal to the inter-rung space and which is articulated to a support around a substantially horizontal axis between an advanced position in which the front wall has a lower part close to one of the rungs of the ladder and a rearward position in which the lower part of the front wall is moved away from said bar to allow a user to correctly place his foot on said bar, the locking device comprising a locking device the front wall in the forward position.
  • the usage management device comprises a plurality of front walls articulated to the support.
  • the support is a structure supporting a panel of such a ladder use management device.
  • the inclined ladder 1 shown in figures 1 to 4 And 6 to 10b to which the invention applies comprises horizontal bars 2 between two lateral uprights 3 and 4. Between each pair of bars 2 adjacent to each other, an inter-bar space extends.
  • the invention is presented in the form of an access installation of a first type comprising the above-mentioned ladder and a usage management device according to the invention.
  • the device of the invention comprises a panel 5 whose length is sufficient to cover several rungs 2 of the ladder 1 and whose width is at least substantially that of the ladder taken between the uprights 3 and 4.
  • the panel 5 is articulated on ladder 1 to extend behind it and be movable between a first state in which the panel 5 is applied against a rear face of the ladder 1 opposite its access face or front face and a second state, in which the panel 5 is distant from this rear face of scale 1.
  • This panel 5 is shaped in such a way that its current cross section has a central part which, when the panel 5 is in its first state, crosses the average plane of scale 1 (the average plane is the parallel plane to the bars 2 and the uprights 3, 4 and which passes through the middle of the bars 2 and the uprights 3, 4), in other words, said central portion of the panel 5 passes between the bars 2 until it extends beyond the middle plan of ladder 1.
  • the function of this configuration is to make the rungs 2 of ladder 1 inaccessible by making it impossible to support the foot or hold the hand.
  • the central part of the panel 5 then occupies the inter-bar space 2 sufficiently to prevent the user's foot or hand from penetrating this space to press correctly on the lower bar or to grip it.
  • the bars 2 are then housed in housings here in the form of cutouts 6 made in this central part, when the panel 5 is folded down on the ladder, which allows the central part to partly occupy the interspace. bars.
  • the panel 5 is articulated to the scale around an axis 7 parallel to the bars 2, by its lower part and more precisely by means of arms 8 and 9 extending the panel 5 downwards beyond its lower transverse edge 5a.
  • the arms 8, 9 make it possible to have a panel in which the axis 7 is distant from the lower transverse edge 5a in a longitudinal direction of the panel 5 (and of the scale 1 when the panel 5 is folded against the scale 1).
  • the lower part of the panel 5 is moved away from the ladder 1 so that the user's foot can rest on the first bar 2 exposed.
  • panel 5 is located at the rear of scale 1 so that the effect of gravity tends to move it away from it.
  • the panel 5 has the shape of a box whose front face 13 has cutouts 6 delimiting between them front walls 13', 100 intended to occupy the inter-bar space when the panel 5 is in its first state.
  • the front walls 13', 100 have dimensions substantially equal to the inter-bar space and comprise fixed front walls 13' and a movable front wall here the lower front wall 100 located between the lower transverse edge 5a and the adjacent cutout 6 .
  • the lower front wall 100 is articulated on a supporting structure 101 of the panel 5 (such as longitudinal stiffening edges extending on each side of the panel 5) to have a lower part 100a movable between an advanced position near the ladder 1 and a rearward position separated from the ladder 1, the lower front wall 100 having an upper part 100b provided with a lever 102 arranged to bear against the ladder 1, and more particularly a bar 2 thereof, when the panel 5 is in its first state, so as to maintain said lower part 100a of the lower front wall 100 in its advanced position and which is detached from the ladder 1 when the panel 5 is in its second state to release the pivoting of said part lower 100a of the lower front wall 100 towards its rearward position.
  • the panel 5 when the panel 5 is in its first state, it is pressed against the ladder 1 and prevents an unauthorized user from placing their feet on the bars 2 to climb along the ladder 1.
  • the panel 5 When the panel 5 is in the second state, the movement away from the panel 5 in combination with the movement of the lower front wall 100 in the rearward position makes it possible to obtain a spacing of the lower front wall 100 in relation to the neighboring bar 2 such that the user can place their foot correctly, safely and comfortably on said bar 2.
  • a tension spring 103 extends here between the lower part 100a of the front wall 100 and the supporting structure 101 to return the lower part 100a to the rearward position.
  • This tension spring 103 is completely optional, the operator being able to push back the lower part 100a with the tip of the foot when he places said foot on the bar 2 which was previously covered by said lower part 100a.
  • the box defines an interior space between the cut-out front face 13 and a solid rear face which makes it possible to accommodate control mechanisms as illustrated in the following.
  • the panel includes an upper cover 14, substantially perpendicular to the face 13, and whose width is less than the spacing of the uprights 3, 4 of the ladder 1. This cover is intended to pass between two bars 2 to form an obstacle for access to the ladder, particularly if it has a crinoline, and to constitute a resting platform for a user of the ladder 1 located above the panel 5. It will be noted that this upper cover 14 has its free end, a pedal 15 and a retractable stop 16, a more detailed description of which will be given below.
  • panel 5 associated with a ladder 1 provided with a crinoline 1a.
  • the panel 5, in addition to the articulation 7, is recalled against the ladder by a return member 17, here a pair of gas cylinders, against the effect of gravity.
  • the return effort will be adjusted so that the user only provides minimal effort to manually remove panel 5 from scale 1, aided in this by the effect of gravity.
  • the upper surface of the cover 14 is not strictly perpendicular to the panel 5. It has an angle A with respect to this panel 5 which depends on the angle of inclination B of the scale 1 relative to the horizontal (on the ground), so that when the panel 5 is folded down against the ladder 1, the user who rests on the cover 14 has a feeling similar to that which he has when he is at the foot of the scale 1 at the end of the descent or at the start of the ascent.
  • the angle between panel 5 and the upper surface of cover 14 is 84 degrees, give or take a few degrees, in particular to take into account the proximity that the end of the cover must maintain with the rung 2 of ladder 1 under which it passes, with the aim of putting implement a stop for maintaining the separated state of the panel 5 as described below.
  • a pusher 18 and on the other hand a barrel 19, for example that of a key lock.
  • FIG. 5 is therefore a diagram which shows the different mechanisms allowing the user to operate the device of the invention in order to meet the most recent regulatory requirements in terms of safety and ergonomics. More precisely, the mechanisms represented are transmission members, connecting on the one hand a bolt P for locking the lock to the lower barrel 19 and to the upper pedal 15 for operating this bolt P and, on the other hand connecting the stop retractable 16 to the pusher 18. These mechanisms are housed in a box panel such as that referenced 5 on the Figure 3 , whose face 13 is turned towards the ladder (of which only one bar 2 is shown on the figure 5b ) and in the cover 14 also made in the form of a box.
  • a box panel such as that referenced 5 on the Figure 3 , whose face 13 is turned towards the ladder (of which only one bar 2 is shown on the figure 5b ) and in the cover 14 also made in the form of a box.
  • the pedal 15 and the stop 16 are pivotally mounted, the first to be able to be pressed against a return member and the second to be held projecting above the end of the cover by its own return member.
  • the return member of the pedal 15 is for example dimensioned so that the pedal 15 can only be depressed by the exercise of a relatively large effort (for example around twenty daN) in order in particular to avoid accidental depression of the pedal 15 (and therefore an untimely opening of the cover 14) by the user when descending the ladder or to avoid any attempt to open it by hand from the bottom of the ladder.
  • the quarter-turn bolt P which normally projects out of the lock, can be retracted by action on the cylinder, using a key specific to the authorized user. This operation of the bolt by the barrel is ensured by a linkage 28 and is independent of the operation of the bolt P by the pedal 15.
  • the pusher 18 is pivotally mounted around the fixed axis 20 and acts on the rod 29, which rotates the pusher 30 around a fixed axis 31.
  • the pusher 30 slides a rod 32 which pivots the stop 16 around an axis 33. Return members internal to this transmission place the stop 16 projecting relative to the cover 14.
  • the authorized user in front of the locked lock, acts with his key or any other operating device on the barrel 19.
  • the rod 28 which is associated with it, causes the bolt P to enter the lock 27.
  • the panel 5 can then be moved aside manually of the ladder until the stop 16, sliding while retracting under a bar 2 of it (this bar is called stop bar subsequently to distinguish it from the others) thanks to the slope that 'it presents in the upper part, comes to protrude again behind this bar and holds the panel spread against its return member 17.
  • the user comfortably crosses the bars thus discovered until reaching a bar 2 above the stop bar which cooperates with the stop. He can then easily press (directly or via an intermediate mechanism) with his foot on the stop 16 which can then go back under the stopping bar and allow the panel to be folded down by the return member 17.
  • the conviction is then re-locked, prohibiting access to anyone who does not have the appropriate means of operating barrel 19.
  • the panel 5 has an upper part connected to each of the uprights 8, 9 by a compass 40 comprising a first connecting rod 40.1 having one end articulated to the upright 8, 9 and an opposite end articulated at one end of a second connecting rod 40.2 having an opposite end articulated to one side of the upper part of the panel 5.
  • the first connecting rod 40.1 is extended beyond its articulation to the second connecting rod 40.2 by a lever to the free end of which is attached one end of a return member 41 having an opposite end attached to a lug secured to the end of the second connecting rod articulated to the panel 5.
  • the return member 41 tends to fold the panel 5 against the ladder 1.
  • the upper end of the panel 5 is provided with a cover 14 as on the Figure 3 .
  • the ladder is vertical and no longer inclined.
  • the panels 5 do not have a cover 14 and implement a slightly different mechanism for handling the panel 5 when the user is on ladder 1 above the panel 5.
  • This mechanism comprises a rod 42 mounted to slide along the upright 8 of the ladder 1 parallel to said upright.
  • the rod 42 comprises a first end 42.1 articulated to a first end of a third connecting rod 43 having a second end articulated at a midpoint of the first connecting rod 40.1.
  • the rod 42 comprises a second end 42.2 associated with an operating member.
  • the operating member is a pedal 44 actuable by the user's foot when his feet are on a bar 2 located above the upper edge 5b of the panel 5.
  • the operating member is a handle 45 operable by the user's hand when his feet are on a bar 2 located above the upper edge 5b of the panel 5.
  • the stop preventing the folding of the panel 5 against the ladder 1, against the force of the return member 41 is not shown.
  • This stop can for example consist of a lock, rotational indexing of the handle or the pedal, etc.
  • the panel 5 is articulated to scale 1 which has a crinoline 1a, also around a transverse axis 10 by the two arms 11 and 12 which extend its upper part beyond its upper transverse edge 5b. It is understood that the arms 11, 12 make it possible to have a panel 5 in which the axis 10 is distant from the upper transverse edge 5b in a longitudinal direction of the panel 5 (and from the scale 1 when the panel 5 is folded against the scale 1).
  • the front walls 13', 200 comprise fixed front walls 13' and a movable front wall here the upper front wall 200 located between the upper transverse edge 5b and the adjacent cutout 6.
  • the upper front wall 200 is articulated on the supporting structure of the panel 5 to have a lower part 200a movable between an advanced position near the ladder 1 and a rearward position away from the ladder 1, the upper front wall 200 having a part upper 200b mounted on an articulation axis to the supporting structure of the panel 5 and provided with a lever 202 arranged to bear against the ladder 1, and more particularly a rung 2 thereof, when the panel 5 is in its first state, so as to maintain said lower part 200a of the upper front wall 200 in its advanced position and which is detached from the ladder 1 when the panel 5 is in its second state to release the pivoting of said lower part 200a of the upper front wall 200 towards its rearward position.
  • the panel 5 when the panel 5 is in its first state, it is pressed against the ladder 1 and prevents an unauthorized user from placing their feet on the bars 2 to climb up the ladder 1.
  • the distance of the hinge pin 10 relative to the upper transverse edge 5b in combination with the movement of the upper front wall 200 in the rearward position makes it possible to obtain a spacing of the upper front wall 200 relative to the neighboring bar 2 such that the user can place their foot correctly, safely and comfortably on said bar 2.
  • the ladder 1 comprises uprights 3, 4 between which rungs 2 extend and inter-rung spaces in which boxes 300 are mounted, each having dimensions substantially identical to those of the inter-rung space to occupy it. this.
  • a rod 301 is articulated at the rear of the part lower 300a to connect the boxes 300 together and ensure simultaneous pivoting of the boxes 300 between their two positions.
  • a lock block 302 is fixed on the upright 3 to receive a tab 303 secured to the rod 301 when the rod 301 is near the upright 3.
  • the tab 303 comprises an opening into which a bolt engages when the tab 303 is inserted in the lock block 302 which thus locks the boxes 300 in their advanced position.
  • the lock block 302 can be replaced by a padlock system.
  • the ladder can be inclined or vertical, with or without a crinoline.
  • a substantially horizontal cover will preferably be used.
  • the bolt can be connected to a locking latch or lock or any other means of locking.
  • the return member can be arranged to hold the panel 5 in the open position, in particular when the hinge pin is above the panel 5.
  • the cover can occupy all or part of the cross section of the crinoline.
  • the cover can be arranged to extend to the lower end of the crinoline or inside it.
  • the device in which the panel is articulated to the ladder in the lower part, is equipped with a member for returning said panel to a position away from the rear face of the ladder.
  • the stop can be arranged to be retractable in a housing of the cover so as not to injure an operator who falls on the cover.
  • the means of connecting the panel 5 to the scale can be devoid of arms: the articulation axis is then close to the lower or upper transverse edge of the panel depending on whether we are in the embodiment of the figures 1 to 8 or in the embodiment of the Figure 9 .
  • the panel may include one or more movable front walls.
  • the panel may comprise several sections assembled to form the complete panel. For example, it is possible to provide a section comprising only movable front walls and a section comprising only fixed front walls.
  • the front walls can be flat, vertical or inclined, or have a dihedral or curved shape.
  • the panel may be provided or devoid of means for returning it to its first state and/or its second state.
  • the panel may comprise a fixed front wall in the form of a flat sheet applied against the rear face of the ladder without extending into the space between the rungs of the ladder.
  • the panel can be produced in a manner different from that described, for example: by deformation of sheets, and/or by machining of sheets and/or plates, by assembly dismountable or non-dismountable...
  • the housings of the panel 5 formed by the cutouts 6 can be produced by plastic deformation in the form of recesses of the panel 5.
  • the angular movement of the movable front walls between their two positions can be between a few degrees and 90 degrees or more (for example, for a ladder inclined 90°, plus the inclination of the ladder).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)
EP23202852.2A 2022-10-12 2023-10-10 Vorrichtung zur verwaltung der nutzung einer leiter Pending EP4353942A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2210498A FR3140901A1 (fr) 2022-10-12 2022-10-12 Dispositif de gestion d’usage d’une échelle

Publications (1)

Publication Number Publication Date
EP4353942A1 true EP4353942A1 (de) 2024-04-17

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ID=85381238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23202852.2A Pending EP4353942A1 (de) 2022-10-12 2023-10-10 Vorrichtung zur verwaltung der nutzung einer leiter

Country Status (2)

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EP (1) EP4353942A1 (de)
FR (1) FR3140901A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011102506U1 (de) 2011-06-03 2011-10-28 Franz Anton Schröder Schutzvorrichtung zum Schutz einer Leiter gegen unbefugte Benutzung
US20170260811A1 (en) * 2016-03-10 2017-09-14 Canadian Plastics Inc. Automatic savety pool ladder for an above-ground swimming pool
WO2022069173A1 (fr) * 2020-09-30 2022-04-07 Coutier Industrie Dispositif de gestion de l'acces et d'usage d'une echelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011102506U1 (de) 2011-06-03 2011-10-28 Franz Anton Schröder Schutzvorrichtung zum Schutz einer Leiter gegen unbefugte Benutzung
US20170260811A1 (en) * 2016-03-10 2017-09-14 Canadian Plastics Inc. Automatic savety pool ladder for an above-ground swimming pool
WO2022069173A1 (fr) * 2020-09-30 2022-04-07 Coutier Industrie Dispositif de gestion de l'acces et d'usage d'une echelle

Also Published As

Publication number Publication date
FR3140901A1 (fr) 2024-04-19

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