EP1231355A1 - Device for immobilising a drive, and an actuating device for closures or sun screens comprising such a device - Google Patents

Abstract

This device for immobilizing a drive member (3) or an end bearing for a winding shaft (2) in a closing or sun protection installation comprises a console (4) equipped with a pin (44) for centering the member (3) or the bearing. This pin is inscribed inside a cylindrical envelope surface with a circular base centered on the axis (X-X ') of rotation of the winding shaft (2). The pin (44) is provided with two flats (44a, 44b), so that it is able to immobilize in rotation the member (3) or the bearing around the axis of rotation (X-X ') of the tree (2). <IMAGE>

Description

The invention relates to a device for immobilizing a drive member or bearing of a winding shaft in a trunk of a locking or protective installation solar. The invention also relates to a mechanism for operation of such an installation.

The term “closing installation” means the doors, the gates, shutters and equivalent equipment.

It is known to integrate an operating mechanism of a winding shaft of a portal, shutter or blind, in a trunk or box provided to be put in place during the realization of the shell of a building. Such a chest, includes end brackets against which the winding shaft of the gate, shutter or blind deck must be positioned. In practice, one end of this tree is positioned thanks to a bearing immobilized with respect to one of the consoles while a drive, such that an electric motor or a mechanical device, is sandwiched between the other end of the shaft and the console adjacent.

In installations of this type, it is known, by example of FR-A-2,781,837 or US-A-4,234,032, of using a centering pin provided on the console and intended to be partially introduced into the drive member or the bearing. On the side of the drive member, it is then necessary to create a fixed point to allow training in rotation the shaft and the deck that it supports. In the case from FR-A-2 781 837, a U-shaped intermediate plate is interposed between the shaft drive motor and the console. In the device known from US-A-4,234,032, screws are used to fix a bevel gear relative to a console. These additional immobilization means complicate the installation of a closure or sun protection and require special precautions so as not to lose parts of the installation. These parts increase the cost price of an installation and must be managed as spare parts by both the manufacturer and by the resellers of this kind of material.

It is also known from EP-A-669,446 to use a square section pin to support a drum or a tree, without possibility of rotation. Such a pawn cannot be used with an orifice of corresponding polygonal section and is not compatible with a rotation of the element that it supports.

It is to these disadvantages that we hear more particularly remedy the invention by proposing an immobilization device which does not require the use of materials complementary for immobilization in rotation of an organ or a bearing in relation to a console trunk end, while allowing rotation of certain elements provided with housings or openings of adapted reception.

In this spirit, the invention relates to a device immobilization of a drive member or a bearing end for a winding shaft in an installation for closing or sun protection, this device comprising a console equipped with a centering pin for this organ or of this level, characterized in that this pawn is registered at the inside of a cylindrical envelope based circular centered on the axis of rotation of the winding shaft and is provided with at least one flat, so that it is able to immobilize in rotation this member or this bearing about an axis of rotation of the winding shaft.

Thanks to the invention, the counter fulfills both a centering function of the drive member or bearing compared to the console and an immobilizer function in rotation, to the extent that it is intended to absorb or "take over" a couple tending to rotate the organ or bearing around the longitudinal axis of the winding shaft. The pawn has good resistance mechanical in relation to its size, both in shear than in torsion.

Thanks to its flat (s), the pawn can cooperate with an orifice or a housing of corresponding section provided in a drive member or in a bearing to immobilize it in rotation. Thanks to the fact that it is inscribed in a surface cylindrical envelope with circular base, the pin is also compatible with a pivoting movement of the drive member or the bearing when the latter comprises a circular section opening or housing. The pawn of the invention therefore allows two distinct uses, without that its dimensions must be specifically adapted to these uses. A single pawn reference must be manufactured, which reduces costs by effect quantity and simplify inventory management for the manufacturer and users.

According to an advantageous aspect of the invention, the organ or the bearing associated with the pin includes an opening or a housing provided with two straight edges and two sections in an arc. The two straight edges are provided for cooperate with the flats on the counter. In that case, we can predict that the respective diameters of the surface envelope and sections in an arc equal.

According to another advantageous aspect of the invention, the diameter of the envelope surface is approximately 12 mm. This aspect of the invention makes it possible to use a console equipped with a pin of the aforementioned type with the drive members and / or known bearings.

It can also be provided that the device comprises a support capable of immobilizing the aforementioned member or bearing, this support being provided with means capable of cooperating with the pin for the immobilization of the support relative to the console, in translation in directions perpendicular to the axis of rotation of the winding shaft and rotating around it axis. In this case, these means advantageously include a orifice for the passage of the pin made in a veil of the support, with a non-circular section.

According to another aspect of the invention, the device includes a cheek separating the drive member or of the bearing in relation to the winding volume of the deck, this cheek being able to ensure the axial maintenance of the organ, of the bearing and / or support relative to the console.

The counter is advantageously in one piece with the console.

The invention also relates to an operating mechanism a locking or sun protection system which includes a device as previously described. Such mechanism is easier to install, lower cost and more as reliable as the state of the art mechanisms.

• la figure 1 est une vue en perspective éclatée, avec arrachement partiel, d'un dispositif conforme à un premier mode de réalisation de l'invention ;
• la figure 2 est une vue du dispositif de la figure 1 assemblé, la joue du dispositif étant représentée en traits mixtes ;
• la figure 3A est une vue à plus grande échelle du détail III à la figure 1 ;
• la figure 3B est une vue partielle, en perspective, et à l'échelle de la figure 3A d'un moyeu de moteur utilisé dans le dispositif de la figure 1 ;
• la figure 4 est une coupe de principe, à plus petite échelle, selon la ligne IV-IV à la figure 2, la joue du dispositif étant représentée montée en traits pleins ;
• la figure 5 est une vue en perspective éclatée d'un dispositif conforme à un second mode de réalisation de l'invention ;
• la figure 6 est une vue en perspective du dispositif de la figure 5 en configuration montée, la joue du dispositif étant représentée en traits mixtes ;
• la figure 7 est une coupe de principe selon la ligne VII-VII à la figure 6 ;
• la figure 8 est une coupe analogue à la figure 5 pour un dispositif conforme à un troisième mode de réalisation de l'invention.

The invention will be better understood and other advantages of it will appear more clearly in the light of the following description of six embodiments of a 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 an exploded perspective view, partially broken away, of a device according to a first embodiment of the invention;
• Figure 2 is a view of the device of Figure 1 assembled, the cheek of the device being shown in phantom;
• Figure 3A is an enlarged view of detail III in Figure 1;
• FIG. 3B is a partial perspective view on the scale of FIG. 3A of a motor hub used in the device of FIG. 1;
• Figure 4 is a section in principle, on a smaller scale, along the line IV-IV in Figure 2, the cheek of the device being shown mounted in solid lines;
• Figure 5 is an exploded perspective view of a device according to a second embodiment of the invention;
• Figure 6 is a perspective view of the device of Figure 5 in mounted configuration, the cheek of the device being shown in phantom;
• Figure 7 is a principle section along the line VII-VII in Figure 6;
• Figure 8 is a section similar to Figure 5 for a device according to a third embodiment of the invention.

The mechanism 1 shown in the figures is designed to the operation of the roller shutter with the apron T more or less wound around a hollow shaft 2 controlled by a motor electric, housed in this shaft and whose hub 3 is provided to be fixed relative to a console 4 end of a trunk or box not shown. The hub 3 is shown with partial removal. The console 4 is provided with means 41 for fixing on the trunk or box and / or on the shell of the building. We note 42 the main veil of the console 4 which is bordered by returns 43 whose geometry is adapted to that of the edges of the console 4.

We denote X-X 'the axis of rotation of the shaft 2 in configuration device mounted. In this configuration, the axis XX ' coincides with the longitudinal axis A-A 'of the shaft 2.

From the web 42 extends, in the direction of the volume inside the box, a pin 44 intended to be introduced in a housing 31 open on an end face 32 of the hub 3 which is intended to be pressed against the web 42.

According to the invention, the pin 44 is provided with two flats 44 a and 44 b . It is also inscribed inside a casing surface S of cylindrical shape with a circular base and centered on the axis XX ′. We denote by D the diameter of the surface S.

The housing 31 has, in cross section, a shape complementary to that of the pin 44. More specifically, the opening 31 a of the housing 31 on the face 32 comprises two straight edges 31 b and 31 c and two sections 31 d and 31 e in an arc, the diameter of which is noted D '.

The diameters D and D 'are substantially equal.

Thus, when the hub 3 is engaged around the pin 44 a , it is centered relative to the console 4 and immobilized in directions YY 'and ZZ' parallel to the web 42 and perpendicular to the axis XX '.

In addition, thanks to the cooperation of the flats 44 a and 44 b and the edges 31 b and 31 c of the opening 31 a which are extended by parallel sides of the housing 31, the hub 3 is also immobilized in rotation around the 'X-X axis'.

A cheek 5 makes it possible to separate the junction zone between the hub 3 and the console 4 and the deck winding area T on shaft 2, this cheek 5 being immobilized on the console 5 with screws 6.

As can be seen more particularly in FIG. 4, the central opening 51 of the cheek 5 has a diameter d ₅₁ less than the maximum diameter d ₃ of the hub 3, so that the cheek 5, which is integral with the console 4, avoids a disengagement of the hub 3 and the console 4 by preventing the extraction of the pin 43 relative to the housing 31. The cheek 5 thus ensures the axial maintenance of the hub 3 relative to the console 4, along the axis X -X '.

The diameter D is of the order of 12 mm, which allows to use pin 44 with hubs including a housing circular of the type of the housing 31 whose diameter is greater than or equal to 12 mm, which is usual in the field technique considered. Thus, console 4 equipped with pawn 44 can be used with a motor hub such as that shown, in which case a rotating asset of this hub is obtained, but also with a motor hub such as previously known and provided with a cylindrical housing with circular base, in which case only fixed assets according to direction Y-Y 'and Z-Z' is obtained.

In the second embodiment of the invention shown in Figures 5 to 7, elements similar to those of the first embodiment bear references identical increased by 300. This mechanism 301 includes a winding shaft 302 of an apron T. One end of this shaft surrounds a motor of which only the hub 303 is shown.

A support 307 defines a housing 371 for receiving the head 333 of the hub 303. The support 307 is equipped with elastic hooks 372 intended to cooperate with surfaces of spans 334 arranged at the periphery of the head 333 so to retain it in the housing 371, as shown in the figure 9. We denote 373 the bottom panel of the support 307 and 374 an opening in this modesty.

The section of this opening 374 has substantially the same shape as that of the opening 31a of the housing 31 of the first embodiment.

The console 304 of this embodiment is analogous to that of the first embodiment and carries a pin 344 provided with two flats 344 a and 344 b , this pin projecting from the main wall 342 of the console 304.

A cheek 305 is also provided and includes a opening 351 intended to surround the hub 303 in configuration device mounted. 306 screws allow immobilization of the cheek 305 on the console 304.

We note 374 a and 374 b the longitudinal edges of the opening 374. These edges have a shape allowing them to cooperate with the flats 344 a and 344 b when the pin 344 is introduced into the opening 374 by mounting the support 307 on the console 304, this arrangement being represented by the arrow F ₁ in FIG. 7.

We denote X-X 'the geometric axis of rotation of the shaft 302, Y-Y 'and Z-Z' directions generally, parallel to the sail 342 and perpendicular to the axis XX '.

It is understood that the shape of the elements 344 and 374 allows immobilization of the support 307 relative to the console 304 in translation, in the directions YY 'and Z-Z', and in rotation about the axis X-X '. In addition, the hooks 372 and the bearing surfaces 334 provide an axial retention of the hub 303 relative to the support 307, the cheek 305 allowing an axial retention of the support 307 relative to the console 304 because the diameter d ₃₅₁ of the opening 351 is less than the maximum dimensions of the support 307 in a direction YY 'and / or Z-Z'.

In the third embodiment of the invention shown in Figure 8, elements similar to those of first embodiment bear identical references increased by 400. A console 404 is provided with a pawn 444 similar in shape to pawn 344 of the fourth mode of production. An electric motor hub 403 is provided for be engaged in a support 407 defining a housing 471 receiving the head 433 of the hub 403. A tube 402 is designed to be arranged around the hub 403 for winding an apron not shown.

As before, the shape of elements 444, 407 and 433 maintains the hub 403 parallel to the bottom web 442 of the console 404 and around the axis XX 'of rotation of tree 402.

The axial retention of elements 407 and 403 relative to the console 404 is obtained thanks to a cheek 405 whose opening central 451 has a diameter slightly larger than that of tube 402 but less than the maximum dimensions of the head 433 parallel to the web 442.

This embodiment has the particular advantage that an axial immobilization of the hub 403 is obtained without use of hooks of the hook type 372 of the third embodiment.

Whatever the embodiment considered, the pawn centering and immobilizing the organ in rotation drive or bearing is advantageously in one piece with the console, which ensures precise positioning and foolproof of the pawn compared to the console. The pawn can also be reported on the console.

The technical characteristics of the different modes of shown achievement can be combined without departing from the scope of the present invention.

Claims (9)

Device for immobilizing a drive member or an end bearing for a winding shaft in a closing or sun protection installation, said device comprising a console equipped with a pin for centering said member or of said bearing, characterized in that said pin (44; 344; 444) is inscribed inside a casing surface (S) of cylindrical shape with circular base centered on the axis (X-X ') of rotation of said shaft (2; 302; 402) and is provided with at least one flat (44 a , 44 b ), so that it is able to immobilize in rotation said member (3; 303; 403) or said bearing (103; 203) around said axis of rotation. Device according to claim 1, characterized in that said member (3; 303; 403) or said bearing (103; 203) comprises an opening (374) or a housing (31) provided with two rectilinear edges ( 31b , 31c ) and two sections (31 d , 31 e ) in an arc. Device according to claim 2, characterized in that the respective diameters (D, D ') of said surface (S) and of said circular arc sections (31 d , 31 e ) are substantially equal. Device according to one of the preceding claims, characterized in that the diameter (D) of said envelope surface (S) is approximately 12 mm. Device according to one of the preceding claims, characterized in that it comprises a support (307) capable of immobilizing said member (3; 303; 403) or said bearing (103; 203), said support being provided with means (374 ) capable of cooperating with said pin (344) for immobilizing said support, relative to said console (304), in translation in directions (Y-Y ', Z-Z') perpendicular to the axis of rotation ( X-X ') of said shaft (402) and in rotation about said axis. Device according to Claim 5, characterized in that the said means comprise an orifice (374) for the passage of the said pin (344) formed in a web (373) of the said support, with a non-circular section. Device according to one of the preceding claims, characterized in that it comprises a cheek (5; 305; 405) for separating said member (3; 303; 403) or bearing with respect to the winding volume of said deck (T) , said cheek being capable of ensuring the axial maintenance of said member or bearing and / or of said support relative to said console (4; 304; 404). Device according to one of the preceding claims, characterized in that said pin (44; 344; 444) is in one piece with said console (4; 304; 404). Operating mechanism of a closing or sun protection installation, characterized in that it comprises a device (4-44; 304-344; 404-444) according to one of the preceding claims.

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