FR2815069A1 - Unlocking mechanism of mechanically driven shutters comprises small rod pivoted at one end on shutter driving arm and sliding at other end on shutter - Google Patents

Abstract

The unlocking mechanism comprises a small rod (28) whose first end (30) is pivoted on the second end (26) of the shutter driving arm (18) and second end (32) slides on the shutter flap (10). Locking means (40) integral with the shutter flap can be controlled by a control rod (50). In the locked position the arm drives the small rod which engages with the control rod to free the fixed stop point (46) by which the arm supported against the shutter is rotated.

Description

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 The present invention relates to a device for unlocking mechanically driven casement flaps comprising at least one arm, the first end of which is pivotally mounted on a drive shaft and the second end of which is capable of bearing on said leaf to cause it to rotate, from a so-called closed position to a so-called open position.

 Devices intended to drive the shutters from the interior of dwellings without having to open the windows are known, and they exist in motorized versions or in manual versions.

 Generally, the bay is closed by two leaves, each leaf being able to pivot from 1800 around a vertical axis located near the lateral edges of the bay. A bent arm connects each of the internal faces of the leaves to a vertical drive shaft protruding outside a drive unit, which is arranged under the lintel or on the lower edge of the bay near the axis of swinging of the leaves.

 The drive unit comprises motor means, in particular but not exclusively electric motor means able to rotate the motor shaft on which the first end of said arm is mounted. The second end of said arm is slidably mounted in longitudinal guide means fixed, perpendicular to the axis of rotation, on the leaf so as to be integral therewith. Thus, the arm constitutes a lever arm, the second end of which is able to bear on said leaf and to cause it to rotate about its vertical axis, and since the motor shaft and the axis of rotation are not coaxial , the end of the arm is movable in translation relative to said leaf.

 The total closure of the opening is achieved when, under the action of the arms, the leaves come into abutment against the edges of said opening. Thus, the shutters are a means of isolating the interior of the dwelling from the

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 cold, but it's also a way to protect against break-ins.

 However, the mechanical driving devices of the flap shutters do not allow the two leaves to be held in a sufficiently secure manner in the closed position on the opening.

 One solution consists in mounting a traditional locking system on said shutter, which requires, in addition to opening the window, a manual operation to actuate said system for locking and for unlocking.

 The object of the present invention is to remedy these drawbacks by proposing an unlocking and locking device actuated by the shutter drive means.

 This object is achieved thanks to the fact that the unlocking device comprises: a link the first end of which is pivotally mounted on the second end of said arm and the second end of which is slidably mounted on said leaf so that said arm can drive said leaf from said open position to said closed position where said second end of said arm is in a position spaced from said leaf; locking means integral with said leaf and capable of being controlled by a control rod, the end of which is located near said second end of said link, from a locked position corresponding to the so-called closed position of said leaf where said means locking devices are mechanically connected to at least one fixed stop point, to an unlocked position where said locking means are released from said fixed stop point; and in that, in said locked position, said arm is capable of driving the first end of said link towards the leaf so that the second end of said link sliding on said leaf cooperates with said end of said control rod and controls said locking means for releasing them from said fixed stopping point and for said second end of said arm to come into contact with the leaf to cause it to rotate, whereby the pivoting of said arm unlocks said flap and then drives the leaf towards said open position.

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 Thus, a characteristic of the unlocking device resides in the mode of driving the unlocking means by the rotation of the arm, the second end of which, separated from the leaf in the closed position, acts first of all on the first end of the link, which causes the sliding of the second end of the link on the leaf and the rotation of said link around said second end of the arm. In this way, during the rotation of the arm, before its second end comes into contact with the wing which is held in a fixed position by the locking means, the second end of the link is guided in translation against the wing and will cause the control rod, the end of which is located near the second end of said link. The control rod is capable of controlling the locking means, which are fixed on the leaf and are mechanically connected to a fixed stop point secured to the bay, so that they release said stop point.

 As soon as the breakpoint is released, the second end of the arm makes contact with said leaf and rotates it towards the open position, the link being substantially parallel to said leaf and held against the end of the control rod. In this way, the flap, initially locked on said fixed stop point is unlocked and is opened by the only actuation in rotation of the arm.

 According to a particularly advantageous embodiment of the invention, said locking means comprise a locking member able to pivot between a first position where said locking means are mechanically connected to said fixed stopping point and a second position where said locking means are released from said fixed stopping point, said locking member being provided with return means capable of holding it in said first position; and in that during the closing of said leaf, the locking means and said fixed stop point cooperate together so that said locking member pivots to mechanically connect the means of

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 locking and said fixed stop point in said closed position of said leaf.

 Thus, the locking member constitutes a simple element for transmitting movement for locking and unlocking the flap. In addition, the return means make it possible to maintain the locking member in the position corresponding to the active state of the locking means, that is to say in the state in which they are connected to the stopping point. In this way, when the leaf is rotated towards the closed position, the locking means are, first of all, guided by the stop point so as to pivot said locking member and allow the leaf to be closed. , then, when the leaf is in the closed position and the locking member has returned to its initial position under the action of the return means, the locking means are connected to the fixed stop point and ensure the locking of the shutter .

 According to an advantageous configuration, the control rod is mounted articulated on said locking member and said end of said control rod is slidably mounted on said leaf, whereby the movement in translation of the end of said control rod causes pivoting of said locking member.

 As will be explained in more detail, according to a preferred embodiment, the locking means comprise at least one longitudinal piece forming a hook secured to said locking member, capable of pivoting and mechanically connecting said locking means to said point 'fixed stop. The longitudinal part is mounted articulated on the leaf and it is integral with the locking member so as to pivot simultaneously with it.

 Furthermore, the longitudinal part forms a hook which is held in the active position by the return means of the locking member and which the stop point is able to move, firstly when the leaf is closed. Then, when the leaf is in the closed position, the longitudinal part returns to its active position under

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l'action des moyens de rappel sur l'organe de verrouillage et la partie crochue est engagée derrière le point d'arrêt fixe.

the action of the return means on the locking member and the hooked part is engaged behind the fixed stop point.

 According to another preferred embodiment of the invention, the locking means comprise at least one return rod substantially perpendicular to said control rod and pivotally mounted on said locking member so that the pivoting of said locking member translates the end of said deflection rod which is capable of being engaged in said fixed stop point.

 According to an advantageous characteristic, the second end of said link is able to slide towards the axis of rotation of said leaf during opening so as to drive the end of said control rod to exert traction on the locking member opposite to the action of said return means, whereby said locking means are released from said fixed stop point.

 According to another advantageous characteristic, the locking device comprises first means forming a slide secured to said leaf in which are engaged said second end of said rod and the end of said control rod so that the second end of said rod sliding in said first means forming a slide in the direction opposite to the axis of rotation of said leaf is capable of exerting a push, on said end of the control rod, opposite to the action of said return means, to pivot said locking member and release said locking means from said fixed stopping point. Thus, according to this characteristic, the second end of the link and the end of the control rod are guided in translation in the same means forming a slide. In this way, the second end of the link, under the action of the arm, is capable of bearing on the end of the control rod and of driving it in translation in the means forming a slide.

 Advantageously, the locking member is made of an elastically deformable material to form said return means, whereby said member pivots elastically around a fixed point. This

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 characteristic makes it possible to produce locking means at an advantageous cost while retaining the technical characteristics necessary for the operation of the locking means.

 According to a particularly advantageous arrangement, the locking device comprises second means forming a slide parallel to said first means forming a slide in which the second end of said arm is capable of being engaged during the opening of said leaf so as to be integral with said second means forming slide, whereby said leaf is in a fixed position when said arm is stationary between said open position and said closed position. This arrangement keeps the shutter leaf in a fixed position when it is ajar. In fact, in this case, the leaf is held by the second end of the link which is articulated on the second end of the arm and which is immobilized to it halfway. Given the degree of freedom of the link, the leaf has a rotational play which is detrimental. According to this particular arrangement, when the end of the arm comes into contact with the leaf it is engaged in the second means forming a slide and in the half-open position the triangle formed by the end of the arm, the axis of rotation of the leaf and the he axis of rotation of the arm is undeformable and the leaf maintained in a fixed position.

 Advantageously, the first slide means have a lateral recess in which the second end of said arm is capable of being engaged during the opening of said leaf so as to be integral with said first slide means, whereby said leaf is in a fixed position when said arm is immobile between said open position and said closed position. As soon as the end of the arm makes contact with the leaf, it crosses the recess and engages in the same means forming a slide as those in which the second end of the link slides and allows the leaf to be immobilized in the half-open position.

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- la Figure 5 est une vue schématique de dessus en élévation montrant le battant du volet en cours de fermeture. Other features and advantages of the invention will emerge on reading the description given below of particular embodiments of the invention, given by way of indication but not limitation, with reference to the appended drawings in which: - Figure 1 is a schematic view from above in elevation showing the device according to the invention where the flap of the shutter is in the closed position; - Figure 2 is a schematic view from above in elevation showing the operation of the device for unlocking the flap; - Figure 3 is a schematic top view in elevation showing the wing of the shutter being opened; - Figure 4 is a schematic top view in elevation showing the wing of the shutter in the open position; and,

- Figure 5 is a schematic top view in elevation showing the wing of the shutter being closed.

 We will first refer to Figure 1 to describe the constituent elements of the invention.

 Figure 1 illustrates a partial top view of a bay capable of being obstructed by a shutter. The flap comprises a leaf 10 which is mounted for rotation on the edge of the opening along an axis of rotation 12, perpendicular to the plane of the drawing. Conventionally, the leaf comprises hinges capable of cooperating with hinges fixed in the edge of the opening.

 The leaf 10 is disposed in the closed position and cooperates with a second leaf 16 so as to completely obstruct the opening.

 The device comprises an arm 18 whose first end 20 is pivotally mounted on a motor shaft 22 located in the bay. The drive shaft 22 projects substantially vertically outside a housing 24 in which is installed a drive mechanism for the drive shaft 22. Thus, the drive shaft 22 is able to drive the arm 18 in a plane substantially horizontal.

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 The arm 18 has a second end 26 on which a link 28 is pivotally mounted. Said link 28 is able to pivot around its first end 30 and its second end 32 is slidably mounted in a slide 34 which is integral with the internal wall of the leaf 10.

 In the illustrated position where the leaf 10 is in the closed position, the link 18 is inclined at least by an angle 36 corresponding to the angle made by the link 28 with the perpendicular to the leaf 10. So that this angle is not less at the fixed limit which is greater than 0, the end 26 of the arm 18 comprises a lug not shown against which the link 28 is capable of coming into abutment.

 The slide 34 integral with the leaf 10 is formed of a profile in which is formed a light 38 over its entire length. The second end 32 of the link 28 has a vertical axis, not shown, terminated by a stud engaged in the lumen 38 of the slide 34, so as to guide said second end 32 in translation.

 Any other guide means could be suitable for guiding the second end 32 of the link 28.

 The device according to the invention comprises locking means 40 integral with the internal wall of the leaf 10. According to a particular embodiment, they comprise a longitudinal part 42 whose acute end forms a hook and which is articulated in a plane horizontal on the upper internal edge 44 of said flap 10. The longitudinal part 42 is engaged in a fixed point 46 secured to the upper edge of the opening so as to block the rotation movement of the leaf 10. In addition, it comprises return means not shown, mounted on its pivot axis 48 intended to keep it engaged in the fixed point 46. Furthermore, abutment means prevent the longitudinal part 42 from pivoting towards the leaf 10 below an angle of 90.

 Advantageously, the locking member is integral with a vertical shaft coaxial with the pivot axis of said member and results in

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 pivoting of the longitudinal pieces forming hooks at the upper and lower ends of said leaf, said longitudinal pieces forming hook being able to be engaged in fixed stopping points located in the lower edge and in the upper edge of the opening.

 The device, according to this particular embodiment, also comprises a control rod 50 articulated on the longitudinal part 42, the end 52 of which is slidably mounted in the slide 34. The end 52 comprises, just like the second end 32 of the link 28, a vertical axis terminated by a stud engaged in the lumen 38 capable of guiding in translation said end 52 parallel to the leaf 10.

 According to the invention, when the arm 18 is rotated in a clockwise direction to rotate the leaf 10 and open the shutter, the second end 26 of the arm 18, at first, approaches of the leaf 10 and causes the second end 32 of the link 28 to slide in the slide 34 towards the end 52 of the control rod 50.

 It is understood that the sliding of the end 32 of the link 28 in the slide 34 as soon as the arm 18 is rotated is technically only possible if said link 28 has a sufficiently open angle 36. Indeed, if the link 28 is perpendicular to the slide 34, the entire force of the arm is applied perpendicularly to the leaf 10, which can damage the device.

 When the second end 32 of the link 28 slides in the slide 34 it abuts against the end 52 of the control rod 50 which is located nearby in the slide and moves it in collinear translation, against the return means, until the end 26 of the arm 18 abuts against the internal wall of the leaf 10, in accordance with FIG. 2.

 FIG. 2 shows the arm 18, the end 26 of which makes contact with the internal wall of the wing 10, and the link 28 arranged parallel to the slide 34.

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 When the end 52 of the control rod 50 is moved in translation, it drives the longitudinal part 42 forming a hook in rotation about its axis 48, which has the effect of releasing the hooked part from the fixed stop point 46 and to release the locking means 40 from said fixed stop point 46.

 In this way, the flap is unlocked and no obstacle prevents the rotation of the leaf 10 under the action of the arm 18 which then drives it, as illustrated in FIG. 3.

 In this Figure 3, the link 28 is parallel to the slide 34 and its second end 32 is no longer abutted against the end 52 of the control rod 50 which has returned to its initial position thanks to the return means located on the axis 48 of rotation of the longitudinal piece 42 forming a hook, said piece coming to bear on the stop means.

 Figure 4 illustrates the open position of the leaf, when the leaf 10 is applied against the outer wall of the building and the arm 18 is at the end of its travel.

 When the shutter is closed, the arm 18 is rotated anti-clockwise as illustrated in FIG. 5.

 Given that the link 28 is pivotally mounted at the end 26 of the arm 18 and that its second end 32 is capable of sliding in the slide 34, when the arm 18 is rotated, the shutter is driven via the link 28.

The end 26 of the arm 18 is spaced from the leaf 10 and it is the second end 32 of the link 28, integral with the slide 34 which drives the leaf 10.

 When the latter, driven by the arm 18 is applied to the opening, the acute part of said longitudinal piece 42 makes contact with the fixed stop point 46, and does not move away from friction by pivoting about its axis 48 in the direction clockwise then folds down under the action of

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 return means so that the hooked part engages behind the fixed stop point 46, as soon as the leaf 10 is in the closed position.

 Thus, the leaf is locked automatically without any manipulation and the locking means return to their initial positions so as to allow a new unlocking and a new opening.

 According to a second particular embodiment of the invention not shown, the locking means comprise a locking member of circular symmetry capable of rotating around a fixed point of the leaf and controlled by said control rod. At the periphery of said locking member, two return rods are mounted articulated at two diametrically opposite points, said return rods being able to be engaged in two fixed stop points, one in the upper part of the opening, the other in the bottom part.

 Thus, the control rod drives the locking member in rotation which in turn drives the return rods in the fixed stopping points.

 According to a third embodiment, not shown, the link 28 as shown in Figure 1 is inclined at an angle opposite to the angle 36 relative to the perpendicular to the leaf 10, and the actuation of the rotating arm causes the second end of the link 28 in a direction opposite to the direction of movement according to the first embodiment. Thus, the second end 32 abuts against the end of a not shown control rod which exerts traction on the locking member so as to release the locking means from the fixed stopping point.

 According to a fourth embodiment of the invention, not shown, the device comprises second means forming a slide parallel to said first means in which the second end of said arm is able to engage when the end of the arm makes contact with the leaf. so as to be integral with said leaf. Thus, in a half-open position the leaf is held in a fixed position.

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 According to a fifth embodiment also aiming to immobilize the leaf in a ajar position, the first means forming slides have a lateral recess in which the second end of said arm is able to engage.

 According to a sixth embodiment, the locking member is made of an elastically deformable material so as to form the return means at an advantageous cost.

Claims (10)

 1. Device for unlocking mechanically driven casement flaps comprising at least one arm, the first end of which is pivotally mounted on a drive shaft and the second end of which is capable of bearing on said leaf to cause it to rotate, by so-called closed position towards a so-called open position, characterized in that it comprises: - a link (28), the first end (30) of which is pivotally mounted on the second end (26) of said arm and the second end (32) ) is slidably mounted on said leaf (10) so that said arm (18) can drive said leaf (10) from said open position to said closed position where said second end (26) of said arm (18) is in a separated position said leaf; - locking means (40) integral with said leaf and capable of being controlled by a control rod (50), the end (52) of which is located near said second end (32) of said link (28), from a locked position corresponding to the so-called closed position of said leaf (10) where said locking means (40) are mechanically connected to at least one fixed stopping point (46), to an unlocked position where said locking means ( 40) are released from said fixed stopping point (46); and in that, in said locked position, said arm (18) is capable of driving the first end (30) of said link (28) towards the leaf (10) so that the second end (32) of said link ( 28) sliding on said leaf (10) cooperates with said end (52) of said control rod (50) and controls said locking means (40) to release them from said fixed stop point (46) and that said second end (26) of said arm (18) bears against the leaf (10) to drive it in rotation, whereby the pivoting of said arm (18) unlocks said flap and then drives the leaf (10) towards said open position. <Desc / Clms Page number 14>  2. Device for unlocking mechanically driven casement shutters according to claim 1, characterized in that said locking means (40) comprise a locking member (42) able to pivot between a first position where said locking means (40) are mechanically connected to said fixed stop point (46) and a second position where said locking means (40) are released from said fixed stop point (46), said locking member (42) being provided with suitable return means maintaining it in said first position; and in that during the closing of said leaf (10), the locking means (40) and said fixed stop point (46) cooperate so that said locking member (42) pivots to mechanically connect the locking means (40) and said fixed stop point (46) in said closed position of said leaf (10).  3. Device for unlocking mechanically driven casement shutters according to claim 2, characterized in that said control rod (50) is articulated on said locking member (42) and in that said end (52) of said rod control (50) is slidably mounted on said leaf (10), whereby the translational movement of the end (52) of said control rod (50) causes said locking member (42) to pivot.  4. Device for unlocking mechanically driven casement shutters according to claim 2 and 3, characterized in that said locking means (40) comprise at least one longitudinal piece forming a hook (42) integral with said locking member (42), capable of pivoting and mechanically connecting said locking means (40) to said fixed stop point (46).  5. Device for unlocking mechanically driven casement shutters according to claim 2 and 3, characterized in that said locking means (40) comprise at least one return rod substantially perpendicular to said control rod (50) and pivotally mounted on said locking member (42) so that the pivoting <Desc / Clms Page number 15>  of said locking member (42) drives in translation the end of said return rod which is capable of being engaged in said fixed stop point (46).  6. Device for unlocking mechanically driven flaps according to any one of claims 2 to 5, characterized in that the second end (32) of said link (28) is capable of sliding towards the axis of rotation (12 ) of said leaf (10) during opening so as to drive the end (52) of said control rod (50) to exert traction on the locking member (42) opposite to the action of said means of reminder, whereby said locking means (40) are released from said fixed stop point (46).  7. Device for unlocking mechanically driven casement shutters according to claim 3, characterized in that it comprises first means (34) forming a slide integral with said leaf (10) in which said second end (32) of said link is engaged. (28) and the end (52) of said control rod (50) so that the second end (32) of said link (28) sliding in said first means (34) forming a slide in the opposite direction to the axis of rotation (12) of said leaf (10) is capable of exerting a push on said end (52) of the control rod (50), opposite to the action of said return means, to pivot the locking member (42) and release said locking means (40) from said fixed stop point (46).  8. Device for unlocking mechanically driven casement shutters according to any one of claims 2 to 7, characterized in that said locking member (42) is made of an elastically deformable material to form said return means, whereby said locking member (42) pivots elastically around a fixed point.  9. Device for unlocking mechanically driven casement shutters according to claim 7, characterized in that it comprises second means forming a slide parallel to said first means (34) forming a slide in which the second end of said <Desc / Clms Page number 16>  arm is able to be engaged during the opening of said leaf so as to be integral with said second slide means, whereby said leaf is in a fixed position when said arm is stationary between said open position and said closed position.  10. Device for unlocking mechanically driven flaps according to claim 7, characterized in that the first slide means have a lateral recess in which the second end of said arm is capable of being engaged when said flap is opened. to be secured to said first slide means, whereby said leaf is in a fixed position when said arm is stationary between said open position and said closed position.