FR3120246A1 - Roller shutter locking device - Google Patents

Abstract

The present invention relates to a locking device (2) of a rolling shutter comprising: - an internal plate (6) intended to be fixed on a lower end (4) of a rolling shutter, the internal plate (6) comprising a pin (8) extending from a first face (10) of the internal plate (6) opposite a second face of the internal plate (6) intended to be joined to the lower end (4) of a roller shutter, - an articulated hook (12) intended to be fixed on the threshold of an opening comprising the roller shutter, the articulated hook (12) being movable between a locking position of the roller shutter and an unlocking position of the shutter rolling and comprising at least one insertion slot (14, 14A, 14B) arranged to accommodate the pin (8) when the articulated hook (12) is in the locking position, and - a return member (16) of the articulated hook (12) from the unlocked position of the roller shutter to the locked position of the rolling shutter. Figure for abstract: Figure 1

Description

Roller shutter locking device

The invention relates to roller shutter locking devices.

The use of roller shutters, especially for houses and buildings, has long been democratized. However, roller shutters can be used as an entry point into a home. Indeed, it would be possible for an ill-intentioned person to lift the roller shutter to access the window, the French window or the bay window located behind or even the dwelling if the opening located at the rear is not not closed.

In order to prevent this from happening, there are roller shutter locking devices that can be attached to the lower end of the roller shutter. It is mainly a lock that can include a barrel and can block the roller shutter when it is lowered.

However, a locking device like this is relatively bulky and can also be quite heavy. It can reach a weight close to one kilogram. This significantly weighs down the rolling shutter, which can be a nuisance, both for a user raising the shutter manually and regularly and in the case of a motorized shutter (additional weight to be set in motion for the geared motor).

There are also removable locking devices such as safety clamps to be placed, when the roller shutter is lowered, between the roller shutter apron and the side uprights of the roller shutter frame.

However, a device like this has the disadvantage of having to be removed from the roller shutter when a user does not want such locking, of being stored elsewhere and put back in place each time the roller shutter is locked.

The object of the invention is in particular to provide a device for locking the roller shutter making it possible to overcome the aforementioned drawbacks, whether it concerns the weight of the device or even its removable aspect.

To this end, the subject of the invention is a device for locking a roller shutter comprising:

- an internal plate intended to be fixed on a lower end of a roller shutter, the internal plate comprising a pin extending from a first face of the internal plate opposite to a second face of the internal plate intended to be attached to the lower end of a rolling shutter,

- an articulated hook intended to be fixed on the threshold of an opening comprising the roller shutter, the articulated hook being movable between a locking position of the roller shutter and an unlocking position of the roller shutter and comprising at least one insertion slot arranged to accommodate the pin when the hinged hook is in the locking position, and

- A return member of the articulated hook from the unlocking position of the roller shutter to the locking position of the roller shutter.

Thus, we obtain a locking device in two parts comprising, at the level of the roller shutter, only one plate (we will see later that there can be two) from which a pin extends. The roller shutter is therefore weighed down with a negligible load, the articulated hook not being fixed to the roller shutter.

In addition, this device is a fixed device which therefore does not have to be placed if the roller shutter is to be locked, then removed and then stored.

According to other optional characteristics of the locking device taken alone or in combination:

- The articulated hook may include a chamfered end arranged to allow movement of the articulated hook under the action of the pin. This shape facilitates the movement of the articulated hook during the passage of the pin and therefore the locking of the roller shutter;

- The articulated hook can include two insertion slots arranged to allow the locking of a roller shutter in two different positions. It can for example be a position in which the shutter is completely closed and another in which it is slightly ajar;

- The hinged hook can be rotatably mounted on a support plate intended to be fixed on the threshold of an opening comprising the roller shutter;

- The hinged hook may comprise a rounded corner arranged to be in contact with the support plate during the passage of the hinged hook between the locking position of the roller shutter and the unlocking position of the roller shutter. This facilitates the rotation of the articulated hook between its locking position and that of unlocking;

- The return member may comprise a return spring whose ends are respectively fixed to a first pin present on the articulated hook and a second pin present on the support plate;

- The support plate comprises at least one wall extending around the second pin. This protects the second pawn against a break-in attempt;

- The hinged hook in the roller shutter unlocking position can extend along the support plate while being attached to the latter. This makes it possible to reduce the size of the locking device in the unlocked position;

- The return device may include an automated device for passing the articulated hook between the locking position of the roller shutter and the unlocking position of the roller shutter;

- The return device includes an electric cylinder set in motion by a geared motor;

- The return member may comprise a control unit configured to activate the movement of the articulated hook between the locking position of the roller shutter and the unlocking position of the roller shutter according to the opening state of the roller shutter;

- The articulated hook can comprise a pawn for handling the articulated hook; And

- The articulated hook may comprise a locking blade mounted so as to be able to rotate around the hinged hook handling pin. This increases the security of the lock against a possible break-in attempt;

The invention also relates to a method for locking a roller shutter using a locking device according to the present invention comprising the following steps:

- movement of the articulated hook from the unlocking position of the roller shutter to the locking position of the roller shutter via the return device,

- displacement of the articulated hook under the action of the pin present on the internal plate,

- entry of the pin present on the internal plate into the insertion slot of the articulated hook.

According to other optional characteristics of the locking process taken alone or in combination:

- the articulated hook comprises two insertion slots, the method comprising the following steps:

- movement of the articulated hook from the unlocking position of the roller shutter to the locking position of the roller shutter via the return device,

- displacement of the articulated hook under the action of the pin present on the internal plate,

- entry of the pin present on the internal plate in a second insertion slot of the articulated hook,

Or :

- movement of the internal plate to an end position of the roller shutter,

- movement of the articulated hook from the unlocking position of the roller shutter to the locking position of the roller shutter via the return device,

- entry of the pin present on the internal plate in a first insertion slot of the articulated hook.

Brief description of figures

The invention will be better understood on reading the following description given solely by way of example and made with reference to the appended drawings in which:

there is a perspective view of a locking device according to a first embodiment of the invention (hook hinged to an insertion slot),

there is a perspective view of a locking device according to a second embodiment of the invention (hinged hook with two insertion slots),

there is a perspective view of a locking device according to a third embodiment of the invention (hinged hook with two insertion slots with a locking blade),

there is a front view of a locking device according to the first embodiment of the invention in an intermediate position (between an unlocking position and a locking position),

there is a front view of a locking device according to the first embodiment of the invention in the locking position,

there is a front view of a locking device according to the second embodiment of the invention in the unlocked position,

there is a front view of a locking device according to a first variant of the second embodiment of the invention in the intermediate position,

there is a front view of a locking device according to a first variant (locking via a second insertion slot) of the second embodiment of the invention in an intermediate position,

there is a front view of a locking device according to a first variant of the second embodiment of the invention in the locking position,

there is a front view of a locking device according to a second variant (locking via a first insertion slot) of the second embodiment of the invention in an intermediate position,

there is a front view of a locking device according to a second variant of the second embodiment of the invention in the locking position,

there is a front view of a locking device according to the third embodiment of the invention in an intermediate position, and

there is a front view of a locking device according to the third embodiment of the invention in the locking position.

detailed description

Reference is now made to the figures illustrating a roller shutter locking device 2 (only the lower end 4 of the roller shutter is shown in the figures).

This locking device is mainly broken down into three parts:

- An internal plate 6 intended to be fixed on the lower end 4 of a roller shutter, the internal plate 6 comprising a pin 8 extending from a first face 10 of the internal plate opposite a second face of the internal plate 6 intended to be attached to the lower end 4 of a rolling shutter. This internal plate 6 is conventionally rectangular in shape and is placed in accordance with the placement of an articulated hook 12 in order to collaborate with the latter. The internal plate 6 is fixed to the lower end 4 of the roller shutter, for example by screwing (see the figures), bolting (there are nuts 7 in the figures) or by any other means known to those skilled in the art and ensuring quality fixing. This can lead to the drilling of the lower end 4 of the roller shutter to pass fastening means there. Still for this purpose of fixing, the internal plate 6 can collaborate with an external plate 9 and plated on the other side of the lower end 4 of the roller shutter. The outer plate 9 may for example comprise threaded studs passing through the lower end 4 of the roller shutter and onto which nuts are screwed so as to enclose the lower end 4 of the roller shutter between the inner plate 6 and the outer plate 9;

- an articulated hook 12 (on a support plate 20 as will be described later) intended to be fixed on a threshold of an opening comprising the roller shutter (for example the threshold of a window or a bay window ), the articulated hook 12 being movable between a locking position of the roller shutter and an unlocking position of the roller shutter and comprising at least one insertion slot 14 arranged to accommodate the pin 8 when the articulated hook 12 is in the locking position ; And

- A return member 16 of the articulated hook 12 from the unlocking position of the roller shutter to the locking position of the roller shutter.

The articulated hook 12 may comprise a chamfered end 18 arranged to allow movement of the articulated hook 12 under the action of the pin 8. This is visible in Figures 4 and 8. In other words, when the articulated hook 12 takes a locking position (see for example the ) thanks to the return member 16 from its unlocked position (visible on the for the second embodiment for example), the descending roller shutter brings the pin 8 into contact with the chamfered part 18. The articulated hook 12 moves to let the pin pass so that it can access the insertion slot 14. The articulated hook 12 is then brought back into the locking position by the return member 16, which allows entry of the pin 8 into the insertion slot 14.

In order to unlock the roller shutter, the hinged hook 12 must be moved from the locking position to the unlocking position to release the pin 8 and thus allow the roller shutter to be raised.

The number of insertion slots 14 is variable.

According to a first embodiment of the invention visible in Figures 1, 4 and 5, the articulated hook 12 comprises a single insertion slot 14 in which the pin can be positioned. The locking and unlocking steps remain the same (positioning of the articulated hook 12 in the locking position, possible movement of the latter under the effect of the passage of the pin 8 along the chamfered end 18 then entry of the pin 8 into the insertion slot 14 and displacement, for example carried out by a user, of the articulated ratchet 12 in the unlocked position.

According to the second (FIGS. 2, 6, 7, 8, 9, 10, 11) and third (FIGS. 12 and 13) embodiments of the invention, the articulated hook 12 comprises two insertion slots 14. These two slots correspond to two different locking positions. The first lowest 14A insertion slot can correspond to the maximum closed position of the roller shutter. The second highest insertion slot 14B can for example make it possible to leave the spaces between the slats of the roller shutter open and a space under the roller shutter, for example of about 15 millimeters.

Regarding locking via the second insertion slot 14B, the locking and unlocking mode is the same as seen before.

Regarding the locking via the first insertion slot 14A, it is necessary to prevent the pin 8 from entering the second insertion slot 14B. Therefore, the passage of the articulated hook 12 from the unlocking position ( ) to the lock position ( ) can only be done when the pin 8 is lower than the second insertion slot 14B. This can be done by a user and can take place when the roller shutter has reached its position corresponding to locking via the first insertion slot 14A (for example maximum closure of the roller shutter) or even after passing the level corresponding to the second insertion slot 14B (in this case the pin 8 will rest on the zone of the articulated hook 12 extending between the two insertion slots 14A and 14B then will enter the first insertion slot 14A). Unlocking is the same as seen before.

As illustrated in the figures, the articulated hook 12 can be rotatably mounted on a support plate 20 intended to be fixed on the threshold of an opening comprising the roller shutter. The support plate 20 can be bent as shown in the figures, a first portion being intended to be fixed on the threshold of the opening and a second portion, substantially perpendicular to the first portion, serving as a support for the articulated hook 12 (therefore being parallel to the rolling shutter).

The articulated hook 12 may comprise a rounded corner 22 arranged to be in contact with the support plate when the articulated hook 12 passes between the locking position of the roller shutter and the unlocking position of the roller shutter. This rounded angle 22 facilitates the passage of the articulated hook 12 from one position to another.

The return member 16 can be fixed by means of the support plate 20. Indeed, the return member 16 can comprise, as can be seen in the figures, a return spring whose ends are respectively fixed to a first pin 24 present on the articulated hook 12 and a second pin 26 present on the support plate 20. The return spring can be relaxed (or with less tension) when the articulated hook 12 is in the locking position and in tension when this last is in the unlocked position (hence the return to the locked position).

Given the positioning of the first and second pins 24 and 26 and the unlocking position taken by the articulated hook 12, the return spring does not automatically return the articulated hook 12 to the locking position. However, the latter makes it possible to maintain the pin 8 inside the insertion slot 16 and thus to lock the roller shutter.

It is possible that the support plate 20 comprises at least one wall 28 extending around the second pin 26. This wall can for example from the portion on which the articulated hook is fixed, perpendicular to the latter, and allows, in addition to the two portions of the support plate 22 described above, to form a structure confining the second pin 26, which makes it possible to prevent the latter from being able to be reached, for example during a break-in attempt , by disengaging the return spring from the second pin 26 and thus moving the articulated hook 12 into the unlocked position. It is also possible to reinforce the attachment between the second pin 26 and the return spring. It is possible to provide a second wall 30 extending parallel to the wall 28 from an opposite end of the portion of the support plate 20 on which the articulated hook 12 is fixed, which can also make it possible to confine the means for fixing the support plate 20 to the opening.

Preferably, the articulated hook 12 in the unlocking position of the roller shutter can extend along the support plate 20 while being attached to the latter. This prevents the articulated hook 12 from extending from the support plate 20 when it has no effect on the locking of the roller shutter. This avoids degradation of the articulated hook 12 or that a user is injured by hitting the latter. In order to ensure this positioning of the articulated hook 12 and an unwanted return of the latter to the locking position, it may include an oblong hole allowing it to be fixed to the support plate 20. Once in the unlocked position, the articulated hook 12 is moved in translation by the return member 16 to place it in a position preventing unwanted rotation of the latter. In this case, and to replace the articulated hook 12 in the locking position, it is necessary to pull on the latter to replace it in a position allowing rotation, the return member 16 therefore ensuring the movement in the locking position.

Alternatively to the user of a manually actuated return member such as a return spring, it is possible for the return member 16 to comprise an automated member for passage of the articulated hook between the locking position of the roller shutter and the position of unlocking the roller shutter. It may for example be an electric cylinder set in motion by a geared motor. This automates the locking and unlocking of roller shutters. It is even possible to connect this return member 16 to an automated opening and closing device for rolling shutters in order to be able to coordinate the two devices, in particular in the case where the articulated hook 12 comprises two insertion slots 14A and 14B . To this end, the return member may comprise a control unit configured to activate the movement of the articulated hook 12 between the locking position of the roller shutter and the unlocking position of the roller shutter according to the opening state of the rolling shutter.

As can be seen in the figures, the hinged hook 12 may include a handling pin 32 of the hinged hook 12. In the event of manual locking and unlocking of the roller shutters, the handling pin can facilitate the movement of the hinged hook 12.

In addition, and according to the third embodiment of the invention illustrated in Figures 3, 12 and 13, the handling pin 32 can serve as a base for fixing a locking blade 34, for example by bolting as illustrated in the figures of the third embodiment of the invention, mode compatible with the first two embodiments, that is to say regardless of the number of insertion slots 14. The latter can be mounted so as to be able to rotate around the handling pin 32 and include a locking slot 36. When the pin 8 has entered an insertion slot 14, 14A or 14B, it is possible to pivot the locking blade 34 around the handling pin 32 to that the locking slot 36 come to accommodate the pin 8. The pin 8 is completely encompassed by the insertion slot 14 and the locking slot 36, which reduces the risk of unauthorized opening of the shutters.

In addition, it is possible to provide, via the dimensioning of the pin 8 and of the locking slot 36 and their respective fixings, to provide for friction of the pin 8 when it enters the locking slot 36. Thus, it is necessary to apply a force on the locking blade 34 to position it around the pin 8. This makes it almost impossible to open from the outside of the roller shutter.

Regarding the method of operation of the locking device, and as explained above, the latter may include the following steps:

- displacement of the articulated hook 12 from the unlocking position of the roller shutter to the locking position of the roller shutter via the return member 16,

- displacement of the articulated hook 12 under the action of the pin 8 present on the internal plate 6,

- entry of the pin 8 present on the internal plate 6 into the insertion slot 14 of the articulated hook 12.

As has also been seen previously, and in the case in which the articulated hook 12 comprises two insertion slots 14A and 14B, the method may comprise the following steps:

- displacement of the articulated hook 12 from the unlocking position of the roller shutter to the locking position of the roller shutter via the return member 16,

- displacement of the articulated hook 12 under the action of the pin 8 present on the internal plate 6,

- entry of the pin 8 present on the internal plate 6 in a second insertion slot 14B of the articulated hook 12,

Or :

- displacement of the internal plate 6 to an end position of the roller shutter,

- displacement of the articulated hook 12 from the unlocking position of the roller shutter to the locking position of the roller shutter via the return member 14,

- entry of the pin 8 present on the internal plate 6 in a first insertion slot 14A of the articulated hook 12.

List of references

2: locking device

4: lower end of the roller shutter

6: internal pad

7: nuts

8: pawn

9: outer pad

10: first face of the internal pad

12: hinged hook

14, 14A, 14B: insertion slots

16: return device

18: chamfered end

20: support plate

22: rounded corner

24: first pawn

26: second pawn

28: wall

30: second wall

32: handling token

34: locking blade

36: lock slot

Claims (10)

Locking device (2) of a rolling shutter characterized in that it comprises:
- an internal plate (6) intended to be fixed on a lower end (4) of a roller shutter, the internal plate (6) comprising a pin (8) extending from a first face (10) of the internal plate (6) opposite a second face of the internal plate (6) intended to be attached to the lower end (4) of a roller shutter,
- an articulated hook (12) intended to be fixed on the threshold of an opening comprising the roller shutter, the articulated hook (12) being movable between a locking position of the roller shutter and an unlocking position of the roller shutter and comprising at at least one insertion slot (14, 14A, 14B) arranged to receive the pin (8) when the articulated hook (12) is in the locking position, and
- A return member (16) of the articulated hook (12) from the unlocking position of the roller shutter to the locking position of the roller shutter. Locking device (2) according to claim 1, in which the articulated hook (12) comprises a chamfered end (18) arranged to allow movement of the articulated hook (12) under the action of the pin (8). Locking device (2) according to any one of the preceding claims, in which the articulated hook (12) comprises two insertion slots (14A, 14B) arranged to allow the locking of a roller shutter in two different positions. Locking device (2) according to any one of the preceding claims, in which the articulated hook (12) is rotatably mounted on a support plate (20) intended to be fixed on the threshold of an opening comprising the shutter rolling. Locking device (2) according to the preceding claim, in which the articulated hook (12) comprises a rounded angle (22) arranged to be in contact with the support plate (20) during the passage of the articulated hook (12) between the roller shutter locking position and roller shutter unlocking position. Locking device (2) according to any one of claims 4 or 5, in which the support plate (20) comprises a second pin (26) and at least one wall (28) extending around the second pin (26 ). Locking device (2) according to any one of Claims 4 to 6, in which the hinged hook (12) in the roller shutter unlocking position extends along the support plate (20) being attached to this last. Locking device (2) according to any one of the preceding claims, in which the articulated hook (12) comprises a locking blade (34) mounted so as to be able to rotate around a handling pin (32) of the articulated hook (12 ). Method of locking a roller shutter using a locking device (2) according to any one of the preceding claims, comprising the following steps:
- displacement of the articulated hook (12) from the unlocking position of the roller shutter to the locking position of the roller shutter by means of the return member (16),
- displacement of the articulated hook (12) under the action of the pin (8) present on the internal plate (6),
- entry of the pin (8) present on the internal plate (6) in the insertion slot (14, 14A, 14B) of the articulated hook (12). Locking method according to the preceding claim, in which the articulated hook (12) comprises two insertion slots (14A, 14B), the method comprising the following steps:
- displacement of the articulated hook (12) from the unlocking position of the roller shutter to the locking position of the roller shutter by means of the return member (16),
- displacement of the articulated hook (12) under the action of the pin (8) present on the internal plate (6),
- entry of the pin (8) present on the internal plate (6) into a second insertion slot (14B) of the articulated hook (12),
Or :
- displacement of the internal plate (6) to an end position of the roller shutter,
- displacement of the articulated hook (12) from the unlocking position of the roller shutter to the locking position of the roller shutter by means of the return member (16),
- entry of the pin (8) present on the internal plate (6) in a first insertion slot (14A) of the articulated hook (12).