EP0728904B1 - Mounting device for a roll up tube, especially of a roller blind - Google Patents

Abstract

The rotating winding tube (1) is mounted on a rolling shutter. The shutter (2) is guided laterally in grooves (3), connected by its top edge to the winding tube, with fixing in the frame of an opening. The fixing comprises two lateral corresponding support cheeks (4), at each end of the tube and connected to the grooves. The cheeks each have a base forming tube bearings. One base (5) has the rotation control and is of box form, with a pedestal (6) of thickness "e", equal to its housing cheek. It also has a tubular extension (7), of diameter (D4), greater than the rolling tube diameter (D2). The winding tube may be rotated by an electric motor, concentric in a casing tube (10), on the extension end (8).

Description

The present invention relates to a device for mounting a rotary winding tube a roller shutter.

In a known manner, such a rolling shutter comprises an apron guided laterally in slides and connected by its upper edge to said winding tube whose fixing in the framing of an opening is carried out by means of two supporting cheeks corresponding sides.

These cheeks are connected to the aforementioned slides and are arranged at each end of the winding tube. Said cheeks each comprise a base forming tube bearings. At least one of these bases is also intended to receive control and drive means.

It is necessary here to remember that such roller shutters find an application, essentially according to two scenarios, namely, according to the first case, in buildings new whose openings are initially designed to receive roller shutters of appropriate dimensions. Reservations are provided in particular at the top said openings, in order to receive the control means, whether electric or mechanical such as pulleys, reducers, motors, etc ...

According to the second scenario, this type of component also finds its application in the renovation of old buildings whose openings are not specially designed to receive such shutters.

This poses a major problem with the consequence of having to carry out reservations mentioned in the previous case, which leads to masonry recovery subsequent, long and expensive, or else not making these reservations, but this will be at the expense of the effective opening width of the shutter which will be reduced accordingly.

The document FR-A-2,550,270 illustrates this type of drawback well, because it describes a device for mounting a rotating winding tube of a rolling shutter, which tube is supported by two side support cheeks capable of being traversed right through by a drive axis in connection, on the one hand internal side, with a support bearing in connection with the tube and, on the other hand, by a base located on the external face of said cheek and itself comprising means of connection with a cheek control member and itself comprising means of connection with an external control member, a pulley manually controlled by a strap in this case.

It is obvious that the presence of this mass constituting, in fact, a prominence, adding to the thickness of the pulley to be housed axially is very disadvantageous in terms of the size and this at the expense of the width of the flap which will be reduced by as much, to less again to perform a masonry recovery.

This type of disadvantage is also encountered in the use of electric motors drive arranged concentrically inside the tube.

It is generally a brake motor, the latter of which operates for lack of current.

One might think that such a provision somehow solves the problem of the axial dimensions mentioned above, but this is not the case because such motors are associated with external electronic control means, logically enclosed in a housing, to be housed in one way or another, near said motor.

Two solutions are then available to the designer, either place said box inside the house to be fitted, either install this box at the end of the winding tube by fixing on the external face of the support cheek.

We understand that we find once again the problem mentioned above, entraining, either a resumption of masonry of the framing of the opening to be equipped, or a reduction in the length of the roller shutter.

Another drawback related to the latter type of training means lies in the fact that in this case it is necessary to maintain individually the end of the winding tube on a supporting cheek by means of a suitable bearing as already mentioned. Of course, in the center of this landing will have to pass the electrical wires of connection of the motor to the electronic unit placed beyond the support cheek. Through Consequently, apart from the problems of dimension in width also arises the problem of connection by the presence of these wires.

Thus, according to the state of the art, it is necessary to pull these wires from the engine to extract them. of the winding shaft then connect them, often by manual action, to the electric case. This of course leads to wasted time at the level of mounting said rolling shutter.

In addition, this involves installing an electrical junction box near the shutter rolling allowing, finally, the connection of the electronic box to the power supply in electrical energy.

The invention also proposes to resolve this drawback by proposing a solution which will be described below and which has the advantage of not having a cable to pull while avoiding any manual intervention on the electrical connections both at the only when removing the shutter. Consequently, the present invention aims to solve all the problems mentioned above and concerns, for this purpose, a device for mounting of a rotating winding tube of a rolling shutter comprising a guided apron laterally in slides and connected by its upper edge to said winding tube the fixing of which in the frame of an opening is carried out by means of two corresponding side support cheeks connected to the rails and arranged at each end of the winding tube, said cheeks each comprising a base forming tube bearings, at least one of these bases also being intended to receive rotation control means, characterized in that the base forms a housing consisting on the one hand, of a base whose thickness "e '" is at most equal to that "e" of the corresponding cheek in which it is housed and, on the other hand, by an extension tubular whose diameter is at most equal to that of the winding tube.

Other characteristics will emerge from the description which follows which will do better. understand how the invention can be realized.

These characteristics should be considered in isolation or according to all their possible combinations and will be the subject of the description below given as example.

• la figure 1 représente une vue en coupe longitudinale de l'extrémité d'un tube d'enroulement équipée d'un boítier de commande selon l'invention ;
• la figure 2 est une vue schématique en perspective de l'extrémité du tube d'enroulement et de son boítier de commande ;
• la figure 3 est une vue partielle schématique en perspective d'une joue dans laquelle se loge le boítier de commande ;
• la figure 4 est une vue en coupe partielle du boítier de commande selon la ligne IV-IV de la figure 2 ;
• les figures 5 et 6 représentent respectivement des modes de réalisation différents d'un connecteur du boítier de commande ;
• la figure 7 est une vue en coupe partielle de la joue 4 selon la ligne VII-VII de la figure 3.

The understanding of this description will be facilitated by referring to the attached drawings in which:

• Figure 1 shows a longitudinal sectional view of the end of a winding tube equipped with a control unit according to the invention;
• Figure 2 is a schematic perspective view of the end of the winding tube and its control unit;
• Figure 3 is a partial schematic perspective view of a cheek in which is housed the control unit;
• Figure 4 is a partial sectional view of the control unit along the line IV-IV of Figure 2;
• Figures 5 and 6 respectively show different embodiments of a connector of the control unit;
• FIG. 7 is a partial sectional view of the cheek 4 along the line VII-VII of FIG. 3.

As an illustrative and in no way limiting example, FIG. 1 shows the end of a tube 1 electrically operated and intended for winding or unwinding a shutter rolling.

Although not shown, the electric drive motor may be, for example, a brake motor comprising a single-phase or three-phase asynchronous motor or else single phase with capacitor.

In fact, this asynchronous motor has a stator extending over a cage rotor squirrel. This is of the standard type and has at its ends rings of non-magnetic short-circuit, connected by non-magnetic conducting bars arranged longitudinally, delimiting magnetic sectors in stacked sheet.

So when the stator is powered, it creates a radial field cutting the bars non-magnetic conductors of the rotor in which there is an induced current flowing through through short circuit rings. In fact, this induced current creates a field rotor from which the force necessary for the rotation of the rotor results. This one transmits this rotation to an axis.

The roller shutter itself comprises an apron 2 guided laterally in slides 3 and connected by its upper edge to said winding tube 1, the fixing of which in the frame of an opening (not shown), is carried out through of two corresponding lateral support cheeks 4 connected to the rails 3 by all medium, and arranged at each end of the winding tube 1.

Said cheeks 4 each comprise a base 5 forming bearings at tube 1, at at least one of these bases being also intended to receive means for rotation control.

According to the invention, the base 5 forms a housing consisting on the one hand, of a base 6 of which the thickness "e" is at most equal to that "e" of the corresponding cheek 4 in which it is housed and, on the other hand, by a tubular extension 7 whose diameter D4 is at more equal to that of the winding tube 1.

In this way it is important to point out, on the one hand, that his plan directed towards the outside does not form a prominence relative to the plane of the lateral cheek 4, which could be inconvenient when fixed to the masonry, and that, on the other hand, its plan directed inwards does not prevent the free operation of the deck, the length "L" can be maximum between the cheeks 4.

These can then be fixed directly to the lateral planes of the frame without resumption of masonry.

More specifically, the base or housing 5 comprises an end portion 8 capable of engaging inside the winding tube 1 to support it, by means of a bearing link 9 arranged concentrically.

As can be seen in FIG. 1, the value of the diameter D1 of the terminal part 8 of the tubular extension 7, added to the value of the thickness of the bearing 9 does not exceed the value of the diameter D2 of the winding tube 1.

The electric drive motor (not shown) is arranged concentrically in a tube 10 forming a casing (motor tube), the latter being of such size as to be positioned also on the terminal part 8 of the tubular extension 7 of the base or housing 5.

In fact, according to another characteristic of the invention, the drive tube 10 includes a end extension 11 able to be fixed by fitting on the terminal part 8 the tubular extension 7 of the housing base 5.

In this way, the external diameter D1 of the terminal part 8 of the housing 5 is of value equal, to the ready fitting clearance, to that of the internal diameter D3 of the extension 11 the motor tube 10.

It should be noted that in any event, the components of the device as a whole have diameters never exceeding that of the winding tube which contains them.

According to an improvement of the invention, a seal 12 is interposed between the end extension 11 of the engine tube 10 and the end portion 8 of the extension tubular 7 of the base or housing 5.

According to another characteristic of the invention, the housing 5 includes means for fixing in rotation relative to the cheek 4, itself fixed on the frame of the opening to be protected by the roller shutter.

As shown in Figures 2 and 3, the housing 5 is preferably shaped quadrangular and of such size as to be housed and positioned in a recess 4a of corresponding shape of the cheek 4.

As also shown in Figure 3 the cheek 4 has a bottom 4B against which abuts the end face 5a of the housing 5 during assembly of the latter.

According to an essential characteristic of the invention, the base 6 of the housing 5, its tubular extension 7 and its terminal part 8, contain the control means of the winding tube 1.

According to the example chosen, these are electronic control means intended for electric motors (not shown) arranged in the winding tube 1.

Of course, the same box 5 may contain any other control means mechanical, such as pulley, reduction motor, etc ...

According to the present case therefore, the base 6 corresponding to the housing 5 contains the electronic components 14 of small size, while the tubular extension 7 or still the terminal part 8 are used to house components 15, 16 of larger size important such as an electric motor capacitor or a transformer very low safety voltage to make a product in accordance with the regulations in force in this area. In this regard, it should also be noted that the configuration of the base 5, according to the invention, makes it possible to mount all of the electronic components on a single electronic card 16a, precisely housed at inside the base 6.

As shown particularly in Figures 2 to 7, the control means electronics contained in the housing 5 are connected to an external current source, by means of a connection assembly constituted by a plug 17 secured to the case 5, capable of cooperating electrically with a socket 18 secured to the cheek 4.

In this way, an electrical connection of the elements is obtained. automatically during assembly without any manual intervention, both on said connections only on their connecting electrical wires.

According to Figure 2, the plug 17 of the housing 5 is constituted by two pads 17a, 17b supported by a boss 19 obtained on the upper part of the housing 5.

According to the present exemplary embodiment, the pads 17a and 17b are pins but indeed understood, as also shown in FIGS. 4 or 5, these can be, respectively, replaced by flexible blades 17c and 17d or by fingers contact 17th and 17th.

In the latter two cases, the blades or fingers will be integrated inside a cover 20 or 21.

According to Figure 3, the socket 18 of the cheek 4 is constituted by two contacts 22 and 23 housed in a recess 24 made in said cheek 4, which is coincident with the boss 19 of the housing 5 and which is intended to be housed therein for mounting for an electrical connection simultaneous.

Claims (16)

1. Mounting device for a rotary rolling-up tube (1) for a roller blind including an apron (2) sidely guided in sliding rails (3) and connected, through its upper edge, to said rolling-up tube (1), the fixing of which in the frame of an opening occurs through two corresponding lateral supporting side-plates (4) connected to the sliding rails (3) and arranged at each end of the rolling-up tube (1), said side-plates (4) each including a base forming bearings for the tube (1), at least one of these bases being also aimed at receiving rotation-control means, characterised in that the base forms a casing (5) formed, on the one hand, of a footing (6) the thickness (e) of which is at most equal to that (e') of the corresponding side-plate (4) in which it is accommodated and, on the other hand, a tubular extension (7) the diameter (D4) of which is at most equal to that (D2) of the rolling-up tube (1).
2. Device according to claim 1, characterised in that the tubular extension (7) of the casing (5) includes an end portion (8) capable of engaging into the rolling-up tube (1) in order to support it through a concentrically arranged connection bearing (9).
3. Device according to claim 2, characterised in that the control in rotation of the rolling-up tube (1) is effected by means of an electric engine concentrically arranged in a tube (10) forming a housing, which is called "driving tube", and in that this latter is of such a size that it is also positioned on the end portion (8) of the tubular extension (7) corresponding to the casing (5).
4. Device according to claim 3, characterised in that the driving tube (10) includes an end extension (11) capable of being fixed by coupling to the end portion (8) of the tubular extension (7) of the casing (5).
5. Device according to claim 4, characterised in that a seal (12) is interposed between the end extension (11) of the driving tube (2) and the end portion (8) of the tubular extension (7) of the casing (5).
6. Device according to any of the preceding claims, characterised in that the casing (5) includes means for rotational fixing with respect to the side-plate (4).
7. Device according to any of the preceding claims, characterised in that the casing (5) has a quadrangular shape and a size such as to be accommodated and positioned in a recess (4a) of a corresponding shape in the side-plate (4).
8. Device according to any of the preceding claims, characterised in that the side-plate (4) includes a bottom (4b) against which abuts the end face (5a) of the casing (5) during mounting.
9. Device according to any of the preceding claims, characterised in that the footing (6) of the casing (5) and its tubular extension (7) and its end portion (8) contain the control means for the rolling-up tube (1).
10. Device according to any of claims 3 to 9, characterised in that the means contained in the casing (5) are electronic control means for the electric engine arranged in the rolling-up tube (1).
11. Device according to any of claims 9 or 10, characterised in that the footing (6) of the casing (5) includes small-size electronic components (14), whereas the tubular extension (7) or also the end portion (8) are aimed at accommodating components (15, 16) of a larger size, such as a condenser for the electric engine and/or a very low-voltage safety transformer.
12. Device according to claim 11, characterised in that the electronic components (14, 15, 16) are fitted on an electronic card (16a) accommodated in the footing (6) of the casing (5).
13. Device according to any of claims 10 to 12, characterised in that the electronic control means contained in the casing (5) are connected to an external current-supply source through a connection unit formed of a plug (17) integral with the casing (5) and capable of electrically cooperating with a socket (18) integral with the side-wall (4).
14. Device according to claim 13, characterised in that the plug (17) of the casing (5) is formed of two studs (17a) and (17b) supported by a boss (19) associated to the casing (5).
15. Device according to claim 14, characterised in that the studs (17a, 17b) are pins.
16. Device according to any of claims 13 to 15, characterised in that the socket (18) of the side-plate (4) is formed of two contacts (22, 23) accomodated in a recess (24) provided for in the side-plate (4), in correspondence with the boss (19) corresponding to the casing (5) and which is aimed at being accommodated in this recess 24 during the mounting, for a simultaneous electric connection.

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