WO1990012190A1

WO1990012190A1 - Device for a roller-blind

Info

Publication number: WO1990012190A1
Application number: PCT/FR1990/000227
Authority: WO
Inventors: Alain Otto
Original assignee: Store Plus
Priority date: 1989-03-31
Filing date: 1990-03-30
Publication date: 1990-10-18
Also published as: FR2654771A2; DE69002290T2; DE69002290D1; EP0417270A1; FR2654771B2; EP0417270B1

Abstract

Device for a roller-blind comprising a tube (1) for winding the blind (2), for example the fabric of a window blind, in which is located a command device which sets in action means for the complete winding of the screening fabric of the blind, characterised by the fact that said means are made up of a jack (11) with a chamber (12) and a shaft (13), as well as means to convert the linear movement of said jack into a rotational movement of the tube. Said invention applies to blinds, rolling shutters, and all other similar devices.

Description

WINDING SCREEN DEVICE

Technical area

The present invention relates to a roll-up screen device, in particular a blind, intended to be positioned in front of a frame in order to filter the rays lumineuκ by a shade cloth which is blurred in front of the glazing of said frame.

Previous Technigue

In general, a blind comprises a tube for winding the screen fabric of the blind inside of which is arranged a rewinding device ensuring the automatic winding of the blind. The unwinding of the blind is often carried out by pulling on a cord placed at the lower end of the blind while the winding is carried out by the control device.

Such a control device includes automatic formatted recall means. by a spring. Said spring is tensioned when the blind is tapped and resumes its equilibrium state when the blind is released by its winding, by acting on the winding tube.

The known devices pose the problem that the winding speed is increasing during said enrctxiement which brings about violent shocks when the fabric is completely wound up.

These end-of-travel shocks are on the one hand harmful to the equipment and cause numerous deteriorations and at Being very unpleasant to hear when you are in a community, for example a hotel, all the frames of which are fitted with such blinds.

Another drawback that the known blinds often present concerns the release of the blind for its winding. Indeed, this release is often achieved by actuating a pawl retaining the spring using a cord.

However, the cord must be actuated using a perfectly vertical force, so that the movement is transmitted in good conditions to the ratchet.

When such blinds are fitted to hotels, it is not possible to ask all customers to act with care, which requires frequent replacement of the equipment.

Statement of the invention

A first object of the present invention is to provide a winding screen device, for example a blind, the winding of which is done in a perfect manner whatever care is taken when handling it.

To this end, the present invention provides a winding screen device, in particular a blind, of the type comprising a tube for winding the screen fabric of the blind in which is placed a control device using automatic means of return to the complete winding of the awning screen fabric, characterized in that the return means consist of a return cylinder comprising a chamber and a rod, as well as means transforming the linear movement of the rod of said cylinder in a rotational movement of the tube. The use for an awning of automatic return means formed by a jack makes it possible to wind the screen fabric of the awning at constant speed and therefore to no longer have brutal impacts at the end of the stroke.

According to a first embodiment of the invention:

- The cylinder rod is linked to an assembly comprising a cooperating core by a threaded bore with a quick-pitch screw;

- Said assembly comprises a guide bearing carrying by an axial cylindrical extension a spacer tube mounted at its end atitre on an axial extension of the core, and in that the jack rod is fixed to the guide bearing;

- The winding tube comprises at least one longitudinal groove, characterized in that the guide bearing and the core, marry, by their external shape, the internal shape of said tube so as to be integral in rotation with said tube; - The screw is fixedly mounted by an axial extension on a frame and is supported by a plug closing said tube with the interposition of a ball bearing and by the core. The use of a control device according to the present invention makes it possible to '' use small diameter canvas winding tubes which makes it possible to install two blinds in front of a frame.

According to a second embodiment of the invention and in the case of reducing friction between the components of the device during the rotational movements and / or translational, the cylinder rod carries a quick-pitch screw cooperating with a core fixed to the tube.

Thus, the use of a screw rod makes it possible to reduce the active diameter of the screw-nut connection and thereby the resulting anti-rotation friction torque. On the other hand, this arrangement makes it possible to eliminate the assembly with a necking of the core on the tube provided in the device described in the context of the first embodiment of the invention.

Advantageously in this second embodiment of the invention, the cdrps of the jack is capable of being mounted fixed in rotation on a frame, by means of an axial extension having a cylindrical bearing on which is mounted in rotation, preferably by means of a soft friction bearing, a support ring secured to the tube.

According to an alternative embodiment, another support ring integral with the tube receives in couiissement and in rotation the rod of the jack in the vicinity of the adjacent end of the body of said jack. This mounting is preferably carried out by means of a soft friction bearing.

Thus, the maintenance with axial couiissement provided between the two ends of the tube to ensure good alignment of the movable elements of the winding device is performed on a small diameter element, thus reducing the cylindrical contact surface, therefore the friction , during axial movements of the rod.

According to yet another alternative embodiment of the invention tion, the screw is of the type with two threads capable of cooperating with two studs mounted diametrically on said core. This arrangement also makes it possible to reduce the friction surfaces.

Means are also provided according to another aspect of the present invention in order to prevent the awning fabrics from moving away from the glazing.

To this end, carriages are engaged in profiles fixed to the window frame. These carriages are parallelepipedal in order to engage in grooves of said sections and carry the load bar which said blind has at its lower end. Means for operating said blinds are also provided according to yet another aspect of the present invention, in order to allow extremely easy maneuvers and stopping in position of the blind in any desired position.

To this end, the invention provides a winding screen device, in particular a blind of the kind comprising maneuvering means implementing a reel, integral with the winding tube, sitr which is wound a control cord passing around d '' a roller before being secured at its end to a fixed point, characterized in that the roller is mounted on a shoe carrying a control handle and intended to slide in a profile fixed to the window frame in front of which said blind is posed.

By the various means used according to the invention, a perfectly reliable installation is obtained which does not require any particular care and therefore is very advantageous. in the hotel industry for example.

The invention further proposes, thanks to the profiles placed along the glazing, to create a perfect black in a room. For this purpose, the profiles are such that the edges of the awning screen fabric are, when it is unrolled positioned against walls blocking any light ray. Brief description of the drawings

The invention will be better understood and other advantages thereof will emerge from the description which follows, with reference to the drawings of two preferred embodiments thereof:

Figure 1 is an axial section of a first winding screen device according to the invention, with local section;

Figure 2 is a partial view similar to Figure 1, of an alternative embodiment of this first rolling screen device according to the invention.

Figtire 3 is a large scale view of the fast pitch screw;

Figure 4 is a partial sectional view of an assembly using two curtains;

Figure 5 is a view along arrow V of Figure 4; Figure 6 shows the guide of the cord;

Figure 7 shows the arrangement provided on the window frame;

Figure 8 is a sectional view on a large scale of the profile used;

Figure 9 is an enlarged sectional view of the pad; Figure 10 shows the engagement of the control handle and the shoe;

Figure 11 shows part of the operating means;

Figure 12 shows an axial sectional view of a second winding screen device according to the invention; FIG. 13 represents an enlarged view, in axial section along line B .B of FIG. 14, of a variant of the core shown diagrammatically in FIG. 12 and;

FIG. 14 represents a sectional view along line A. A. of the core represented in FIG. 13.

Ways to realize the invention

We see in Figure 1 the winding tube 1 of a blind in which is placed a control device according to a first embodiment of the invention.

According to this first embodiment of the invention, the elastic type return means are formed by a gas return cylinder 11 working in compression. This cylinder 11 is formed by a chamber 12 and a rod 13 controlled in displacement by the compressed gas inside the chamber, generally nitrogen is used. The actuator rod 13 is fixed to a guide bearing 14 carrying by a cylindrical axial extension 15 a spacer tube 16. The spacer tube 16 is mounted at its end opposite to that engaged on the guide bearing 14, on an axial extension 17 of a core 18.

As can be seen in the local section, the winding tube 1 has at least one longitudinal groove 10, three in the example shown. These longitudi gorges nales 10 are provided so that in a manner known per se, the end of the awning fabric is blocked in one of them.

The guide bearing 14 and the core 18 conform by their external shape to the internal shape of said tube 1 so as to be integral with said rotating tube 1.

The noγatι 18 has an axially threaded bore in order to cooperate with a screw 19.

The screw 19 is, as visible in FIG. 3, a fast pitch screw.

The screw 19 is mounted fixed by an axial extension 20 on a frame not shown.

The winding tube 1 is closed by plugs 21 clipped at its ends.

The screw 19 is supported by one of these plugs 21 with the interposition of a ball bearing 22.

The screw 19 is thus supported on the one hand by said plug and on the other hand in the threaded bore of the core 18.

The plug 21 located at the other end of the tube 1 supports the chamber 12 of the jack 11, said jack is thus placed between said plug and the guide bearing 14.

This arrangement constitutes means transforming the linear movement of the cylinder rod into the rotation movement of the tube as explained below.

The winding tube 1 and the control device according to the invention having been described, we will now explain how it works.

The gas spring 11 is at rest when its rod 13 is fully LEMENT output, as shown in Figure 1. The fabric, not shown, is fully wound on the tube.

When the awning fabric is pulled in order to unwind it, the tube 1 is rotated and drives the assembly formed by the core 18 and the guide bearing 14 in rotation. The core 18 collaborating by its threaded bore with the screw 19 immobilized in rotation by its mounting in the frame is then driven in translation.

The core 18 integral with the spacer tube 16, the guide bearing 14 and therefore the rod 13 of the jack forces said rod 13 to enter the chamber 12 of said jack 11 by compressing the gas therein. The sealing means internal to the jack are such that the rod can have a translational and rotational movement relative to the chamber.

When the end of the fabric is released, the compressed gas pushes the actuator rod 13 out of the chamber 12 which thus displaces the assembly formed by the guide bearing 14, the spacer tube 16 and the core 18. The collaboration of the core 18 with the screw 19 then adds to the translational movement a rotational movement. The tube 1 is then driven by the core 18 and the guide bearing rotates in a direction tending to wind the fabric of the blind. The tube 1 is then driven by the core 18 and the guide bearing V in rotation in a direction tending to wind the fabric of the blind. This winding is carried out automatically as soon as the user of the blind releases the end of the fabric. It is understood that a control device such as that which has just been described allows, thanks to the use of a compressed gas cylinder, as elastic return means, always perfect operation and performed at constant speed.

The device will not be damaged even if it is handled many times and does not need to be used with special care.

In FIG. 2, a preferred variant is shown according to which a pin 23 serves as an end-of-travel stop for the core 18 during the winding of the awning fabric.

It should be noted that the device is not likely to be subject to deformation by the use of the assembly formed by the core 18, the guide bearing 14 and the spacer tube 16 which ensures perfect axial alignment of the various components without risk of buckling.

This device also has the advantage of being inexpensive to implement since it is possible to use a gas spring of the type of those used for tailgates of motor vehicles. These cylinders are simple, reliable and inexpensive. By way of example, such a control device has been produced using a cylinder with a diameter of 19 mm, making it possible to exert forces up to 10 kg, which is largely sufficient for winding a canvas. blind, this cylinder had a stroke of 350 mm and was implemented with a screw with a pitch of 20 mm.

Another quite advantageous advantage of this control device is its adaptability to the manufacture of sto res of different widths.

The device will in fact be adapted to the width of the blind by simply loading the length of the winding tube 1 and the spacer tube 16.

The use of such a control device makes it possible to use a space-saving winding tube 1, for example with a diameter of 25 to 30 mm; we can then provide for the installation of two blinds in front of a window since the housing 3 necessary for the installation of the two winding tubes 1, 1 ′ will be of reduced dimensions (see FIG. 5).

Figures 4, 5 and 7 show such a mounting of detix blinds in front of a window which we see the glazing 40, the frame 41, the glazing bead 42 and the handle 43 ensure the opening.

Profiles 30 are mounted vertically on the window along the glazing 40. These profiles are fixed on the glazing bead and / otι on the window frame.

As best seen in Figure 8, these profiles 30 have grooves 31 in which may, as will be explained below, slide carriages or pads.

In a manner known per se, the lower end of each awning fabric 2, 2 'is provided with a load bar 5, 5' so as to be always taut. This load bar is usually a rod placed at said lower end.

According to an arrangement of the invention of the carriages 50, 50 ' are provided so as to guide the fabric of the blinds along dti glazing, thus preventing them from being able to move away from said glazing, for example during a draft.

To this end, the carriages 50, 50 'have a parallelepipedic body intended to partially engage in a groove 31 of the profile 30. Returns 32 of said grooves 31 cooperate with longitudinal grooves 51 of the carriages 50.

Two trolleys are provided for each of the blinds; one to his right and the other to his left. For an assembly as shown, with two blinds, there will therefore be two carriages 50 and two carriages 50 '.

The blinds are made integral with these carriages 50, 50 'by fixing, for example by screwing the load bars 5, 5' on these carriages.

According to another arrangement of the invention, means for operating the control device are provided so as to be simple and reliable in use. These means are such that the blind can be locked in any desired position.

In order to allow a better understanding, we will describe the means of operating a single blind, the blind 2. The means of operating this device comprise the roof first, and in a manner known per se, a reel 60 secured to the tube d winding 1 being coaxial thereto, on which a control cord 61 is wound.

The control cord 61 is guided, at a point close to the drum 60 by a floating reference 62 shown so more precise in Figure 6. The use of such a floating return, ensures a perfect rewinding of said cord on the reel.

After passing over said floating reference 62, the control cord 61 passes, as shown diagrammatically in FIG. 11 around a roller 63 before being secured by its end to the housing 3 at a fixed point.

It can be seen in FIG. 11 that when the roller 63 is lowered, the cord 61 is unwound, which drives the reel 60 and therefore the winding tube 1 in rotation, which causes the awning fabric 2 to take off. A deflection roller 24 ensures correct positioning of the awning fabric 2 at its outlet from the housing 3.

As we have seen during the description of the control device, the rod 13 of the jack is returned to the chamber 12 thereof during this course, so that if the roller 63 is released the return jack will tend to return to its rest position. The awning fabric 2 will then be rewound on the tube 1, while by the same movement, the cord 61 is wound on the drum 60 and the roller 63 is reassembled. When, as shown, provision is made for the installation of detix blinds, one of the drums 60 will be provided at the right end of a winding tube 1, while the other 60 ′ will be at the left end from the other winding tube 1 '.

When using all similar elements, they are therefore mounted in opposition and it is then necessary to provide means ensuring the rotation of the winding tubes 1, 1 ' in opposite directions. It is for this purpose that two return rollers 24 'are provided for the awning fabric 2' as well as two rollers, not shown for the control cord of the winding tube 1 '.

In order to ensure the handling of the roller 63, the maneuvering means comprise a control handle 6 visible in FIG. 7.

The control handle 6 is pivotally mounted by an axis 64 on a shoe 65 engaged in one of the grooves 31 of the profile 30. As shown in FIG. 7, said shoe 65 will preferably be engaged in the lateral groove 31 of the profile. The shoe 65 is generally parallelepipedic and is guided in the groove 31 by the flanges 32 thereof.

The shoe 65 has a clearance 66 in which the roller 63 is mounted free to rotate on an axis.

At its end, the shoe 65 represents an elastic tongue 67 separated from the rest of the latter by a notch 68. The control handle 6 has on its head a lug 69 intended to apply a deformation to the elastic tongue 67 when the comb is in the position shown in broken lines in Figures 7 and 10, which exerts on the profile a braking force.

When the shade is to be rolled up or unwound, it suffices to slide the shoe 65 in the groove 31 by action on the control handle 5, the latter being in its position shown in solid lines in FIG. 7.

When the blind is in the desired position, said handle 6 is tilted around the axis 64, as far as the position in dashed lines. This movement causes the lug 69 to press the elastic tongue 67 of the pad against the bottom of the groove 31. The pad 65 is provided in a material such that the friction thus created between the tongue 67 and the groove 31 is sufficient to ensure the 'stop in position of the blind.

It will be noted in the figures that the various elements allowing the implementation of the invention are of dimensions such that they can be implemented easily on the frame 41 of the window.

Another advantage of the invention is that it allows, thanks to the possibility that it ensures the use of two blinds on the same window and thanks to the profile 30, to ensure perfect blackness in a room.

Indeed, we see in Figures 7 and 8 that the shape of the profile is such that when the carriage of a blind is mounted in a groove 31, the edge of the blind fabric is positioned against a wall 33 of the profile which is perpendicular.

Thus, the rays of light tending to pass between the glazing 40 and the blinds are caught in the baffles formed by the blind fabrics and the walls 33 of the profile. This advantage is particularly appreciable in the hotel sector.

In addition, the means for operating each of the blinds being separate and each located along one of the edges thereof, it is possible to operate each of the blinds independently. It is even possible to operate the awning 2 'on closer to the window without manipulating the blind 2 which hides it, which allows one day to create in the room without fully opening the blinds.

According to a second embodiment of the invention, the roll-up screen device shown in FIG. 12 essentially comprises a tube 110 provided with three longitudinal external grooves 112 one of which is intended to receive the end of the awning fabric -screen (not shown) and a control device provided with automatic return means towards the complete winding of the screen canvas of the blind. These return means comprise a return cylinder 114 with elastic action of the type in which a rod 16 slides in a body 118 of the pressure chamber, by way of nonlimiting example a cylinder of the compressed gas type.

The free end of the rod 116 carries a screw 120 with rapid pitch (in the embodiment described here, the screw 120 comprises two threads 122 and 124 mounted in enlargement in FIGS. 13 and 14), the screw 120 cooperates through of a screw-nut type connection with a core 126 fixed to the tube 110 by a flat head screw 128. This connection has the function of transforming the linear movement of the rod 116 into the rotation movement of the tube 110. The end of the tube 110 adjacent to the screw 120 is closed by a plug 130 in which is fitted an axial external projection 132 intended to be mounted free to rotate in a frame (not shown), the plug 130 being fixed to the tube 110 by another screw with flat head 134. The other end of the tube 110 is closed by a support ring 136 receiving the closed end 137 of the cylinder body 118. On this end 137 of the cylinder body 118 is screwed an axial projection 138 having a cylindrical bearing 140 projecting through the ring 136 and an end portion of polygonal section 142 intended to be received in a fixed manner in rotation on the frame. The ring 136 fixed to the tube 110 by a flat head screw 144, is mounted to rotate freely relative to the body of the jack. In the nonlimiting example illustrated in FIG. 12, a soft friction bearing 146 is moreover arranged between the bearing 140 and the ring 136. Finally, washers and circlips 148, 150, provide axial support between the jack 114 and the tube 112 with, however, a slight clearance. Another support ring 152 fixed to the tube 110 by a flat head screw 154 receives the other end 156 of the body of the jack 118 to ensure the axial retention with play of the latter.

The actuator rod 116 projects in the vicinity of the end 156 to the body 118 through the ring 152, with, according to a preferred arrangement, the interposition of another bearing with soft friction 158.

To complete the presentation of this second embodiment of the invention, an end of stroke index 160 is fixed to the free end of the screw 120.

Thus, after placing the blind on the frame, the body of the jack 118 and the rod / screw assembly 116/120 are fixed in rotation while the tube 110 (with the scrolling screen), the plug 130, the core 126 and the rings 136 and 142 are capable of rotation about the axis XX '. To this end, the connection between these latter components is rotated by the presence on the rings 136 and 152, the plug 130 and the core 126 of three U-shaped peripheral notches 162 in which the external walls of the grooves are housed. 112 (this arrangement appears in detail in FIG. 14 with reference to the core 226 and the notches 262).

The device according to the invention which has just been described operates in the following manner. When the operator unrolls the screen fabric, the tube 110 rotates the core 126.

This results in a linear retraction of the rod towards the inside of the pressure chamber of the jack 114 (axial translational movement to the left in FIG. 12) via the screw / nut connection between the core 126 and the screw 120. The screen fabric is then locked in the working position by suitable means, not shown. When the blind is released, the compressed gas in the pressure chamber of the jack urges the rod 116 in linear extension (to the right of FIG. 12). This results in a reverse rotational movement of the core 126 and the tube 110 to achieve the complete atitomatic winding of the screen fabric.

It is interesting to note that the device according to the invention makes it possible to very substantially reduce the friction inherent in mechanical connections between the parts. In particular, the active diameters of the spans 146 and 158 and the screw 120 were chosen to be small in order to reduce the radius of the anti-rotation torque.

Figures 13 and 14 show a variant of the core usable as a replacement for the core 126 with continuous internal thread illustrated schematically in Figure 12. In fact, in order to reduce the contact surfaces at the level of the screw-nut connection, the core 226 carries two studs 228 and 230 with frustoconical head (angle at the top of the order of 30 °) and projecting respectively into the threads 122 and 124 of the screw 120. As shown in Figures 13 and 14, the studs are arranged diametrically relative to the core 226 in two stepped bores 232 and 234 provided for this purpose. The studs are held in place by circular punching of the internal shoulders of the steps. In other embodiments of the invention, the number of threads of the screw is increased in order to cooperate with an equal number of studs arranged symmetrically around the axis XX 'on the core.

The invention is not limited to protective glazing blinds, but also relates to all types of rolling screen, for example and without limitation rolling shutters, curtains and grilles for doors and windows or garage doors or storefronts, movable partitions and closings for cabinets or other storage volumes. It is however understood that the characteristics of the actuator or return actuators used will be chosen according to the specific application concerned. The invention is also not limited to return cylinders of the compressed gas type, but also covers the use as return cylinders, pneumatic, hydraulic and hydraupneumatic cylinders, and of any other device of cylinder type. controlled and progressive action or jack-shock absorbers or jacks with controlled release.

Claims

1 / Roll-up screen device, in particular a blind of the kind comprising a winding tube (110) of the screen fabric of the blind (2) in which is placed a control device using automatic means for returning to the complete winding of the awning screen fabric, characterized in that the return means are constituted by a return cylinder (11, 114) comprising a chamber (12, 118) and a rod (13, 116), as well as means' transforming the linear movement of the rod of said cylinder into a rotation movement of the tube.

2 / Device according to claim 1, characterized in that the cylinder rod (13) is linked to an assembly comprising a core (18) cooperating by a threaded bore with a screw (19) with rapid pitch.

3 / Device according to claim 2, characterized in that said assembly comprises a guide bearing (14) carrying by an axial cylindrical extension (15) a spacer tube (16) mounted at its other end on an axial extension (17) of the core (18), and in that the cylinder rod (13) is fixed to the guide bearing.

4 / Device according to claim 2 or claim 3, wherein the winding tube (1) comprises at least one longitudinal groove (10), characterized in that the guide bearing (14) and the core (18) match , by their external shape, the internal shape of said tube (1) so as to be integral in rotation with said tube (1).

5 / Device according to the end of claims 2 to 4, characterized in that the screw (19) is fixedly mounted by an axial extension (20) on a frame and is supported by a plug (21) closing said tube (1) with interposition of a ball bearing (22) and through the core (18).

6 / winding screen device according to claim 1, characterized in that the rod (116) of the jack (114) carries a screw (120) with rapid pitch cooperating with a core (126, 226) fixed to the tube (110 ).

7 / Device according to claim 6, characterized in that the body (118) of the jack (114) is capable of being mounted fixed in rotation on a frame by means of an axial extension (138) having a cylindrical bearing (140) on which is rotatably mounted, preferably by means of a soft friction bearing (146), a support ring (136) integral with the tube (110).

8 / Device according to one of claims 6 and 7, characterized in that a support ring (152) integral with the tube (110) receives in couiissement and rotation, preferably by means of a friction bearing soft (158), the rod (116) of the jack in the vicinity of the adjacent end (156) of the body of the jack (118).

9 / Device according to one from claims 6 to 8, characterized in that the screw (120) is of the type with several threads (122/124) capable of cooperating with an equal number of studs (228, 230) mounted symmetrically on said core (226). 10 / Device according to claim 9, characterized in that the screw (120) is of the type with two threads with which cooperate two studs (228, 230) mounted diametrically on the core (226).

11 / Device according to one of claims 9 and 10, characterized in that the studs (228,230) have a frustoconical head, preferably with an angle at the top of about 30 °.

12 / Device according to one of claims 6 to 11, wherein the winding tube (110) has at least one longitudinal groove (112) characterized in that the core (126,226) epoxidizes by its external form, the internal form of said tube (110) so as to be integral in rotation with said tube (110).

13 / Roll-up screen device, in particular a blind, characterized in that its load bar carries at its two ends parallelepipedal carriages (50) capable of engaging in profile grooves (30) fixed to the frame (41 ) of the window in front of which said blind is placed.

14 / Winding screen device, in particular a blind, of the type comprising operating means implementing a reel (60), integral with the winding tube (1), on which is wound a control cord (61) passing around a roller (63) before being fixed at its end to a fixed point, characterized in that the roller (63) is mounted on a shoe (65) carrying a control handle (6) and intended to slide in a profile (30) fixed to the window frame in front of which said blind is placed. 15 / Device according to claim 14, characterized in that the shoe (65) comprises an elastic tongue (67) and in that the control handle (6) comprises a lug (69) intended to apply a braking force on the profiled by deformation of the tongue.

16 / Profile for the implementation of a winding screen device, according to one of claims 13 to 15, characterized in that it comprises at least one groove (31) extending parallel to the fabric- screen of the blind, said groove being partially closed by returns (32) intended to cooperate with complementary grooves provided on said carriages (50, 50 ′), and at least one wall (33) disposed in the vicinity of said carriage carrier groove (31) perpendicular to the screen fabric of the awning to position itself against the edge thereof.