EP1500778B1 - Shutter or sun protection Installation comprising a security device - Google Patents

Abstract

The installation or protection has a motor driving a shield to selectively seal an opening, and a limit switching device to stop the shield in a limit switch position. Rod (24) and two screws (28, 28) stop the shield when the shield exceeds its limit switch position. A rotating rack (14) and an interrupter (20) avoids the fall of the shield. The rod, screws, rack and interrupter are mounted on a fixed support (34).

Description

The present invention relates to an installation of closure or sun protection comprising a set of security.

Closure means doors, gates, shutters and equivalent equipment.

In a closing or protective installation solar, it is known to use a winding mechanism for the operation of a screen, a generic term used here to designate in particular an apron, a door or a shutter. The invention aims more specifically, but not exclusively, such an installation, including the mechanism winding can be operated electrically, thanks to a engine.

In this perspective, it is first known to associate, with this engine, means of stopping the screen aforementioned, at the end of the race. So, there are sets standards incorporating a geared motor and a limit switch, such as that described in DE-A-34 20 789.

In case of failure of the end-of-stroke device, it is also known to use a device complementary end of race, called "ultimate". Such device constitutes a means of stopping the screen, when the latter is beyond his position (s) end of race. After the implementation of this device end of the race, the closing or sun protection can no longer be used as is.

That being said, it is known to integrate, within of the same set of security, a device for the end of race and an ultimate end-of-race device, associated to the electric motor. Such an arrangement is for example conform to one of those marketed respectively by the GFA under the reference SI25.10 - SI55.15, by the GAROG under the reference DK, or by the MEZ company under the reference MTZ.

Moreover, it is known to provide facilities closing or sun protection by means of safety devices, called "anti-fall". These last are intended to prevent the fall of the screen under the effect of gravity, in the case of a mechanical break intervening in the kinematic chain control of this screen and / or in the case of breakage of a spring compensation.

With this in mind, an engine stop switch electrical power is activated, following the detection of the rupture of a compensation spring of the installation, as is known from EP-A-0 151 427 or DE-U-93 10 792. Alternatively, this stop switch is actuated following the detection of a speed of abnormal rotation of the maneuvering shaft of the screen, as this is known from DE-A-199 29 094.

In view of the foregoing, the invention proposes to give more security to the facilities existing closure or sun protection, which does not are not secure enough.

In addition, the invention proposes to carry out the aforementioned improvement, preserving to the extent possible the arrangement of these already existing installations, while optimally using ancillary equipment offered in the trade.

For this purpose, it relates to an installation of closure or sun protection including a suitable screen to selectively close an opening, an engine drive this screen, as well as a set of with end-of-stroke means capable of stop the screen in at least one end position of race, ultimate end-of-race means, able to stop the screen when it exceeds its end position (s) race, and means of stopping the fall of the screen, able to prevent the fall of this screen under the action of the gravity, the ultimate end-of-race means and the means stopping the fall of the screen being mounted on a single support.

• le support unique est prévu d'un premier côté latéral de l'écran ;
• le moteur et les moyens de fin de course sont montés sur un autre support, prévus de l'autre côté latéral de l'écran ;
• les moyens d'arrêt de la chute de l'écran comprennent un premier organe tournant, apte à entrer en rotation sous l'effet de la rotation d'un arbre solidaire du moteur d'entraínement, alors que les moyens de fin de course ultime comprennent un second organe tournant, qui est en prise avec le premier organe tournant ;
• le second organe tournant est reçu dans un boítier monté sur le support unique ;
• le premier organe tournant est co-axial à l'arbre, alors que le second organe tournant est parallèle à cet arbre, tout en étant décalé par rapport à celui-ci ;
• les moyens de fin de course ultime comprennent une tige filetée, formant le second organe tournant, et deux éléments baladeurs, montés sur cette tige filetée tout en possédant au moins un degré de liberté en translation selon la direction principale de cette tige, ces deux éléments baladeurs étant aptes à actionner un interrupteur d'arrêt de l'écran ;
• il est prévu un unique interrupteur d'arrêt de l'écran, commun aux moyens de fin de course ultime et aux moyens d'arrêt de la chute de l'écran ;
• il est prévu au moins un levier, apte à actionner ledit interrupteur unique, ce levier étant mobile sous l'action de l'un ou l'autre des éléments baladeurs ;
• le premier organe tournant est une roue à galets, alors que la tige filetée est solidaire d'un engrenage coopérant avec cette roue à galets au niveau d'un épaulement de cette dernière.

According to other features of the invention:

• the single support is provided on a first lateral side of the screen;
• the motor and the end of travel means are mounted on another support, provided on the other lateral side of the screen;
• the means for stopping the fall of the screen comprise a first rotating member, able to rotate under the effect of the rotation of a shaft integral with the drive motor, while the ultimate end-of-travel means comprise a second rotating member, which is engaged with the first rotating member;
• the second rotating member is received in a housing mounted on the single support;
• the first rotating member is co-axial with the shaft, while the second rotating member is parallel to the shaft, while being offset with respect thereto;
• the ultimate end-of-travel means comprise a threaded rod, forming the second rotating member, and two walkman elements, mounted on this threaded rod while having at least one degree of freedom in translation along the main direction of this rod, these two elements walkmans being able to operate a switch to stop the screen;
• there is provided a single switch for stopping the screen, common to the ultimate end-of-travel means and means for stopping the fall of the screen;
• there is provided at least one lever, able to actuate said single switch, the lever being movable under the action of one or other of the walkman elements;
• the first rotating member is a roller wheel, while the threaded rod is secured to a gear cooperating with the wheel roller at a shoulder thereof.

• les figures 1 et 2 sont des vues, respectivement de face et de côté, illustrant une installation de fermeture ou de protection solaire conforme à l'invention ;
• la figure 3 est une vue agrandie de la zone III de la figure 1 ; et
• la figure 4 est une vue agrandie de face, analogue à la figure 3, illustrant une variante de réalisation de l'invention.

The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of two embodiments of a closure system or solar protection according to its principle, given only to As non-limiting examples and with reference to the accompanying drawings, in which:

• Figures 1 and 2 are views, respectively front and side, illustrating a closure system or solar protection according to the invention;
• Figure 3 is an enlarged view of the area III of Figure 1; and
• Figure 4 is an enlarged front view, similar to Figure 3, illustrating an alternative embodiment of the invention.

The installation of closing or sunscreen, illustrated in FIGS. 1 to 3, comprises first of all a built, having two wings 2 which support so a winding tube 4. The latter is intended for drive a screen 6, able to selectively close a opening 8 delimited substantially by the two wings 2 and the lower part of the tube 4.

Of a first longitudinal side of this tube 4, namely of a first lateral side of the screen, it is expected a support 10, on which is mounted an assembly formed of a electric motor 11 and a device 12 end of race. This set 11, 12, known as such, is example according to that described in DE-A-34 20 789.

On the other side of the screen 6, a wheel rollers 14 is mounted integral with a main shaft 16, intended for the operation of the winding tube 4. This wheel rollers 14, which is in accordance with the teaching of DE-A-199 29 094, is adapted to cooperate with a switch 20 stop the tree 16, as will be seen in what follows.

A gear 22, engaging with the wheel 14 at a shoulder 14 ₁ of the latter, is integral with a secondary shaft 24, in the form of a threaded rod, which is received in a housing 26. This rod 24, which is parallel to the main shaft 16, while being offset relative thereto, supports two nuts 28 and 28 ', forming walker elements.

However, they are not in solidarity with the stem 24, neither in rotation nor in translation, given the presence of a lever 30, to immobilize these players 28 rotating relative to the housing 26. It is note that this lever 30 is retractable, according to the dashed line in Figure 3, so as to allow a manual adjustment of the relative positioning of these players 28 and the stem 24.

Finally, a second stop switch 32 is provided of the shaft 16, received partly in the interior volume of the housing 26. This switch 32 is arranged axially between the two players 28 and 28 ', so that one or the other of these is able to actuate this switch, as will be seen in what follows.

It should be noted that the roller wheel 14 is located mounted on a fixed support 34, resting on a console 35 solidarity with the building. In addition, the gear 22 is received in a bore 36, formed in this support 34, while the housing 26 is secured against the walls of a housing 38, provided in this support 34, which opens into the aforementioned bore 36, while having radial dimensions clearly superior to the latter.

The use of the closure system or sunscreen, described above, will now be explained with reference to FIGS. 1 to 3.

In normal operation of this installation, the assembly 11, 12 provides, on the one hand, the motorization and so moving the screen 6 and, on the other hand, stopping of the latter in two end positions predetermined. In case of failure of the means of arrest in end of race 12, the main shaft 16 continues to drive the screen 6 and, consequently, the roller wheel 14 and the threaded rod 24.

Under these conditions, the players 28 and 28 ' move in translation relative to this rod 24, according to the double arrow F. At a certain point, one or the other of these players 28 or 28 'therefore actuates the switch 32, this which induces the immediate stop of the main shaft 16. This threaded rod 24, these players 28, 28 'and this switch 32 therefore form complementary end stop means of race, referred to as ultimate end-of-race means, able to stop the screen 6 when the latter is beyond of his normal end-of-race positions.

Moreover, in case of a fall of screen 6, due in particular to a mechanical rupture occurring in the kinematic chain which ensures its order, the speed of rotation of the roller wheel 14 increases. Therefore, the wheel 14 is blocked, so that it operates switch 20, which interrupts the power supply of the motor and leads to the immediate shutdown of the screen 6.

FIG. 4 illustrates a variant embodiment of the invention. In this figure, the mechanical elements similar to those of Figures 1 to 3 are assigned same reference numbers, increased by 100.

In this variant embodiment, the means for stopping the screen at the end of the final stroke are devoid of a switch, such as that of FIGS. 1 to 3. This is replaced by a lever 132, generally shaped. T. This lever 132, which is pivotally mounted about an axis A perpendicular to the threaded rod 124, comprises two branches, one of which 132 ₁ extends between the two walkman 128 and 128 ', and whose other 132 ₂ extends in the vicinity of the switch 120.

Thus, in use, during the failure of the conventional end-of-travel system, one of the players 128 or 128 'comes into contact with the branch 132 ₁ of the lever 132. The latter then pivots around the axis A, so that its branch 132 ₂ actuates the switch 120, which interrupts the power supply of the motor and stops the drive shaft 116.

The invention is not limited to the examples described and represented.

So, it can be implemented with any other type of motorization, especially tubular. In addition, it is possible to use another type of anti-fall device, taking advantage in particular of a case detection of a compensation spring, as described in EP-A-0 151 427 or in DE-U-93 10 792.

It is also possible to call on another type of end-stop, particularly with rollers described in FR-A-2 688 022, or with cams as described in IT-1 241 960, or finally at torque detection as described in DE-A-29 517 926.

The invention makes it possible to achieve the objectives previously mentioned.

Indeed, it confers appreciable security to the installation of closing or sunscreen in accordance with its principle.

Moreover, the solution provided by the invention is a remarkable modularity, as far as use of facilities and ancillary equipment already existing or available on the market.

Thus, in the case of existing installations not secure, it is only necessary to add the device Ultimate end of stroke, associated with the anti-fall feature. As a result, the existing equipment remains operational, in the extent that none of its components are removed or substituted.

Moreover, when it comes to setting up new facilities, it is possible to offer the motorization traditional, possibly associated with its device classic end of race. Therefore, it is not necessary to provide a specific motorization, so the existing range is not changed.

Claims (10)

1. Shutter or sun-protection fitting comprising a screen (6) for selectively covering an opening (8), a drive-motor (11) for this screen (6), and a safety unit comprising stop means for stopping the screen (6) in at least one position at the end of its path, ultimate stop means (24, 28, 28', 32; 124, 128, 128', 132) for stopping the screen (6) when it passes its end position or positions, and retention means (14, 20; 114, 120) to stop the screen (6) from falling under the force of gravity, the ultimate stop means (24, 28, 28', 32; 124, 128, 128', 132), and the retention means (14, 20; 114, 120) being mounted at a single support point (34; 134).
2. Fitting in accordance with claim 1, characterized in that the single support (34; 134) has a first lateral side of the screen (6).
3. Fitting in accordance with claim 2, characterized in that the motor (11) and the end stop means (12) are mounted on another support (10) that has the other lateral side of the screen (6).
4. Fitting in accordance with any one of the above claims, characterized in that the screen retention means (14, 20; 114, 120) comprise a rotating body (14; 114) that rotates under the effect of rotation of a spindle (16; 116) depending on the drive motor (11), while the ultimate stop means (24, 28, 28', 32; 124, 128, 128', 132) comprise a second rotating body (24; 124) that is in direct contact with the first rotating body (14; 114).
5. Fitting in accordance with claim 4, characterized in that the second rotating body (24; 124) is taken up in a casing (26; 126) mounted on the single support (34; 134).
6. Fitting in accordance with one of claims 4 or 5, characterized in that the first rotating body (14; 114) is coaxial with the spindle (16; 116), while the second rotating body (24; 124) runs parallel to this spindle, being offset in relation to it.
7. Fitting in accordance with any one of claims 4 to 6, characterized in that the ultimate stop means comprise a threaded rod (24; 124), forming the second rotating body, and two sliding elements (28, 28'; 128, 128') mounted on this threaded rod while having at least one degree of freedom of displacement (arrow F) in accordance with the main direction of this rod, these two sliding elements being able to actuate a screen-stop detent (32; 120).
8. Fitting in accordance with any one of the above claims, characterized in that there is only one screen-stop detent (120) that is common to the ultimate stop means (24, 28, 28', 32; 124, 128, 128', 132) and the screen retention means (114, 120).
9. Fitting in accordance with claims 7 and 8, characterized in that it has at least one lever (132) able to actuate the said sole detent (120), this lever being mobile under the action of one or the other of the sliding elements (128, 128').
10. Fitting in accordance with any one of claims 4 to 6, and in combination with claim 7, characterized in that the first rotating body is a roller wheel (14; 114), while the threaded rod (24; 124) is dependent on a gear (22; 122) functioning in conjunction with this at the point of a shoulder (14; 114) of the latter.

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