EP0826859A1 - Actuating device for a wing and gate with such a device - Google Patents

Abstract

The door or gate actuator consists of an assembly between the door or gate (1) and a fixed structure (3,6). A drive motor (4) is mounted on the door/gate or fixed structure. A slideway lever (8) is pivoted to a fixed point on the motor. It also comprises a motor lever (10) and a manoeuvring bar (7). The motor lever has one end fixed to the motor output shaft and the other pivoting and sliding in the slideway lever slot by means of a roller (11) on its end. The manoeuvring bar is pivoted by one end to the door/gate or the fixed structure, and at its other end to the slideway lever.

Description

The invention relates to a device for actuating a movable closing leaf such as, in particular, used on a door or fence gate of a room or land. The invention also relates to a gate equipped with a device improved actuation.

By the patent FR 2 307 109, it is known to equip a leaf of connecting rods and bars capable of transmitting a displacement force obtained by the rotation of the shaft output of an engine. The effort provided by the engine during opening and closing phases of the movable leaf is variable depending on the opening angle of the leaf. We notes, in fact, that for angles of opening understood between 0 ° and 30 ° approximately, on the one hand, and 70 ° and 90 °, on the other share, the values of the effort which the engine must provide are significantly higher than the values it must provide in the intermediate part of the displacement trajectory of a leaf. The curve of the effort which an engine must provide in function of the leaf opening angle in a device of the prior art is shown in solid lines in the figure 4. It is irregular.

By patent application FR-2 562 943, we know a gate opening mechanism comprising four connecting rods pivotally and slidably hinged together and connected to a support or a leaf. This mechanism is provided so that the opening takes place in a very short time, so with significant acceleration and deceleration.

However, current standards, and in particular the NF P standard 25-362 relating to closings for free bays and gates, impose a maximum thrust at the end of the leaf of a value of 15 daN. This limitation is a safety factor which avoids possible crushing of an object, an animal or of a person by a leaf while moving. If a installer decides to equip a movable leaf with a motor delivering an effort greater than 15 daN, it must obligatorily complete the installation with safety equipment complex and expensive, which significantly increases the cost total of the installation and induces a risk of failure not negligible. Thus, in the case of the prior art, one can provide electronic systems to limit the thrust effort continuously, so that the curve shown in solid lines in Figure 4 is moved to the down in this figure to reach the position shown in mixed lines, corresponding to engine operation with an effort less than 15 daN. In this case, the effort that can deliver the motor in the intermediate zone, i.e. between 30 ° and 70 ° opening, is low, around a few daN, which affects the functioning of the device, for example in case of wind opposing the closure or hard point in the hinge or link system. he sometimes a leaf gets stuck during movement in its intermediate zone because the engine is not able to make enough effort to move it.

The invention aims to solve these problems and to propose a device for actuating a movable closing leaf, allowing to obtain, using three connecting rods, an effort applied to the leaf substantially constant whatever its open position.

In this spirit, the invention relates to a device actuation of a movable closing leaf hinged on a fixed structure, this actuating device being arranged between said movable leaf and said fixed structure and comprising a motor fixed to said leaf or said fixed structure, a sliding rod, articulated at a fixed point relative to said engine, a connecting rod, a first end of which is integral with an output shaft of said motor, and one of which second end is pivotally and slidingly articulated in an oblong slot in said sliding rod, and a maneuvering bar articulated by one of its ends on said leaf or on said fixed structure, characterized in that that said operating bar is articulated by its other end on said slide rod.

Thanks to the invention, the movement of the leaf can be insured with a good reserve of torque throughout its movement, while meeting safety rules. In effect, the sliding joint, produced between the connecting rod slide and engine rod, allows efficient transmission of the engine effort at the steering bar without the effort generated by the motor reaches an excessive value. The fact that the operating bar is articulated by one of its ends, on the connecting rod allows to transmit effectively movement, without requiring the addition of a fourth connecting rod.

According to another definition of the invention, it relates to a device for actuating a movable leaf of hinged closure on a fixed structure, this device actuator being disposed between said movable leaf and said fixed structure and comprising a motor fixed on said leaf or said fixed structure and at least one bar of articulated operation on said leaf or on said structure fixed, said motor and said operating bar being connected by a sliding rod, articulated at a fixed point by report to said engine and to said operating rod, characterized in that a connecting rod, a first end of which is integral with an output shaft of said motor, is articulated, pivotally and slidably by a second end in an oblong lumen of said slide rod.

According to an advantageous aspect of the invention, the ratio of the distance from the point of the link of the connecting rod to runner secured to the engine and the engine output shaft, on the one hand, and the length of the engine rod, on the other share, is less than 1. This particular geometry of the actuation device provides good efficiency of the entire system because it induces a reduction of the force transmitted by the motor output shaft during of its transmission to the steering rod.

In practice, the best results have been obtained when this ratio is about 0.75.

The invention also relates to a portal comprising a actuation device as previously described.

• la figure 1 est une vue de dessus d'un dispositif d'actionnement du vantail mobile conforme à un premier mode de réalisation de l'invention ;
• la figure 2 est une vue de dessus d'un dispositif d'actionnement d'un vantail mobile de fermeture conforme à un second mode de réalisation de l'invention ;
• la figure 3 est une représentation schématique de la courbe d'effort fourni par le moteur d'un dispositif conforme à l'invention en fonction de l'angle d'ouverture du vantail et
• la figure 4 est une vue analogue à la figure 3 dans le cas d'un dispositif connu de l'art antérieur.

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 an actuation device in accordance with its principle, given solely by way of example and made with reference to the accompanying drawings in which:

• Figure 1 is a top view of an actuating device of the movable leaf according to a first embodiment of the invention;
• Figure 2 is a top view of an actuator of a movable closing leaf according to a second embodiment of the invention;
• FIG. 3 is a schematic representation of the force curve supplied by the motor of a device according to the invention as a function of the leaf opening angle and
• Figure 4 is a view similar to Figure 3 in the case of a device known from the prior art.

In FIG. 1, a leaf 1 is articulated around a substantially vertical axis 2, carried by a pillar 3 forming a fixed structure. A motor 4, which advantageously incorporates a reduction gear, is fixed on the leaf 1 and has an output shaft 5 substantially parallel to the axis 2. The pillar 3 carries an anchoring foot 6 on which is articulated a first end 7 a an operating bar 7. The second end 7b of the operating bar 7 is connected to the motor 4 by a connecting rod 8 which is articulated at a point 9, fixed relative to the motor 4 and, for example, produced by a pin belonging to the engine cover 4. Note 7 c the axis of articulation of the end 7 a of the bar 7 on the support 6 and 7 d the axis of articulation of the end 7 b of this same bar on the connecting rod 8. The axes 7 c and 7 d are not sliding relative to the parts 6 to 8, so that the rod 7 is articulated in a non-sliding manner relative to the support 6 and to the connecting rod 8.

The connecting rod 8 is sliding and comprises an oblong slot 8 a whose main direction is substantially parallel to the largest dimension of the connecting rod 8. A connecting rod 10 is connected by a first end 10 a to the shaft 5 of the engine 4 , so that it is angularly displaced by the operation of the engine 4. the second end 10b of the connecting rod 10 is articulated slidably in the slot 8 a, so that relative movement of the rods 8 and 10 can .

The operation of the device of the invention appears by comparing the closed and open positions of the leaf 1 which appear respectively in Figure 1 in solid lines and in broken lines. When starting the engine 4 from the closed position, the motor rod 10 is rotated around the shaft 5, so that its free end 10 b tends to move in the oblong slot 8 a. This movement causes a pivoting movement of the rod 8 around its articulation point 9, which moves the end 7b of the bar 7 articulated by its axis 7 d on the rod 8. The end 7 has the bar 7 then rotates about its axis 7 c relative to the support 6, which causes the leaf 1 to its open position shown in phantom.

Thanks to the sliding articulation of the connecting rods 8 and 10, the effort which the motor 4 and its possible reducer must provide, when the leaf is close to its position completely open or closed, is not much more important than that supplied during movement in an intermediate position.

According to an advantageous aspect of the invention and to facilitate the sliding of the end 10 b of the connecting rod 10 in the oblong slot 10 a , the end 10 b carries a sliding roller 11, this roller can be made of a material with a low coefficient of friction such as for example polytetrafluoroethylene and / or mounted free in rotation at the end 10b of the connecting rod 10.

We denote by d the distance separating point 9 from tree 5; the length of the connecting rod 10 is noted L. According to a particularly aspect advantageous of the invention the d / L ratio is lower to 1. This allows an efficient transmission of the force supplied by the motor 4, and leads to a distribution of substantially constant effort depending on the degree of openness leaf, as it appears in figure 3. In practice, best results are achieved using a configuration in which the d / L ratio is about 0.75.

The device of FIG. 2 is a second embodiment of the invention in which the elements similar to those of the embodiment of FIG. 1 bear identical references increased by 50. In this embodiment, a leaf 51 is articulated around an axis 52 carried by a fixed pillar 53. This embodiment differs from the previous one in that a motor 54 is mounted on an anchoring foot 56 secured to a pillar 53. We denote 55 the output shaft of the motor 54 or of the reduction gear which is associated with it. An operating bar 57 is articulated by a first end 57 a on the leaf 51 around an axis 57 c and connected, by a second end 57 b , to the motor 54 by a sliding rod 58 provided with an oblong slot 58 a . We note 57 d the axis of articulation of the second end 57 b of the bar 57 on the connecting rod 58. The axes 57 c and 57 d are not slippery relative to the parts 51, 57 and 58. We note 59 the point integral with the motor 54 on which the sliding rod 58 is articulated.

A connecting rod 60 is connected by one of its ends 60 a to the shaft 55 while its other end 60 b , provided with a roller 61, is capable of sliding in the lumen 58 a .

The operation of this device appears by comparing the closed position of the leaf 51, shown in lines full, in the open position of this same leaf, shown in dashed lines.

As before, the sliding of the roller 61 in the oblong opening 58 a makes it possible to limit the force which the motor 54 must deliver for small or, on the contrary, large opening angles. The distance between the shaft 55 and the articulation point 59 is less than the length L 'of the connecting rod 60. The best results are obtained when the ratio of d' / L 'is substantially equal to 0.75 .

With the two devices shown in Figures 1 and 2, the distribution curve of the force supplied by the motor 4 or 54 relative to the opening angle of leaf 1 or 51 is shown in Figure 3 where it appears that the effort that must deliver the motor during the opening movement or leaf closing is substantially constant. So we can limit the value above 15 daN without, however, its value in the middle part of the opening, i.e. between 30 ° and 70 ° opening, is not too weak to the point interfere with the operation of the device.

Claims (6)

Device for actuating a movable leaf (1, 51) of articulated closure on a fixed structure (3, 6, 53, 56), this actuating device being disposed between said movable leaf and said fixed structure and comprising a motor (4, 54) fixed on said leaf (1) or said fixed structure (56), a sliding rod (8, 58), articulated at a point (9, 59) fixed relative to said motor, a motor rod (10 , 60), of which a first end (10 a , 60 a ) is integral with an output shaft (5, 55) of said motor, and of which a second end (10 b , 60 b ) is pivotally and slidingly articulated in an oblong opening (8 a , 58 a ) of said sliding rod, and an operating bar (7, 57) articulated by one of its ends (7 a , 57 a ) on said leaf (51) or on said fixed structure (6), characterized in that said operating bar (7, 57) is articulated by its other end (7 b, 57 b) on said link slide (5, 58). Device for actuating a movable leaf (1, 51) of articulated closure on a fixed structure (3, 6, 53, 56), this actuating device being disposed between said movable leaf and said fixed structure and comprising a motor (4, 54) fixed on said leaf (1) or said fixed structure (56) and at least one operating bar (7, 57) articulated on said leaf (51) or on said fixed structure (6), said motor and said operating bar being connected by a sliding rod (8, 58), articulated at a point (9, 59) fixed relative to said motor and to said operating bar, characterized in that a motor connecting rod (10, 60 ), a first end (10 a, 60 a) is secured to an output shaft (5, 55) of said motor, is articulated pivotably and slidably by a second end (10 b, 60 b) in a oblong light (8 a, 58 a) of said sliding rod. Actuation device according to one of claims 1 or 2, characterized in that said second end ( 10b , 60b ) of said driving rod (10, 60) is provided with a sliding roller (11, 61) in said elongate slot (8 a, 58 a). Actuation device according to one of claims 1 or 2, characterized in that the ratio of the distance (d, d ') between the point (9, 59) of articulation of said connecting rod slide (8, 58) integral with said motor (4, 54) and the shaft of outlet (5, 55) of said motor, on the one hand, and of length (L, L ') of said connecting rod (10, 60), on the other hand, is less than 1. Actuation device according to claim 4, characterized in that said ratio (d / L, d '/ L') is approximately 0.75. Gate comprising an actuation device according to one of the preceding claims.

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