EP2304155B1 - Device for holding a winch or a motor of a roller shutter in a winding case, winch and case with such a device - Google Patents

Description

The invention relates to a device for holding a drive means, winch or motor, roller shutter in a winding box closed at each end by a cheek, the winch or the motor being arranged inside. the trunk in the vicinity of a first cheek, and a winding tube of an apron extending between the winch or engine and the other cheek, the first cheek having in its central part a clean support pin to be engaged in a housing of the winch housing or engine facing.

For projects in which the shutter has been prepared in the workshop and is delivered in a closed box containing the winch, the winch must be immobilized in rotation in order to prevent the winding tube to turn freely in the trunk in the absence of a drive rod connected to a crank handle of the winch and, on the other hand, to cash the resisting torque of maneuvering during the raising and lowering of the apron when the roller shutter is in place. Otherwise the stop effort in rotation of the winch is only taken up by the drive rod which generates excessive forces in the bearings of a winch input gear, thus risking to damage the life of this winch.

For cases of assembly in renovation, that is to say in cases where a reservation for the shutter was not originally planned, and where we still want to install a roller shutter, the latter is attached with its winding box to hide the deck above the opening, including the window. This chest is positioned outside the opening, either under the lintel or in front of the lintel. In this case, the drive rod and the actuator of the winch are installed after the manufacture of the trunk at the factory and after the installation of the trunk in the opening.

It appears that it is necessary to keep the winch locked in rotation in his trunk, especially during transport or waiting for the laying of the drive rod, once the trunk installed in the opening, to avoid an untimely descent of the apron. But the constraint of this type of installation is that we do not know in advance exactly the final orientation of the trunk outlet because, at the time of installation, it is necessary to drill in the dormant joinery surrounding the opening from the window or the door, in order to bring back the control of the maneuvering organ inside the dwelling. In depending on the configuration of the joinery (thickness of the frame, for example), and the tolerance of the location of its drilling, the operator will slightly differently position the operating angle of maneuver of the drive rod relative to the initial position performed in the workshop. It is therefore necessary that the winch (while being locked to immobilize the deck wound in the trunk time transport and during the installation phase of the shutter) can turn slightly relative to the cheek of the trunk to align with the definitive angulation of the attack rod.

When the roller shutter is driven by an electric motor, instead of a winch, it is advisable to ensure easy mounting of the engine on the adjacent cheek, with sufficient maintenance of the motor housing to prevent its rotation. It may also be necessary to slightly turn the motor head on the cheek, to change the orientation of the limit switches to give them easier access during the final adjustment phase on site. Indeed if the shutter is placed in inner or outer winding, we can change the orientation at the time of installation, in order to have a more convenient access.

FR 2 910 046 discloses a device for holding a rolling shutter winch of the kind previously defined according to which the winch can be positioned on the cheek in three predefined angular positions, which does not make it possible to orient the winch in an angular position other than those predefined . This results in a lack of flexibility for mounting the winch and adjusting.

The invention aims, above all, to provide a winch holding device that allows to ensure a simple and fast way setting up and fixing the winch or engine. In the case of a winch, the holding device must allow to adjust the angular position of the winch relative to the cheek next to the trunk for the alignment of the bore in the joinery and the drive rod. It is further desirable that the proposed solution is simple, economical, and easy to implement.

According to the invention, a device for holding a winch or roller shutter motor in a winding box closed at each end by a cheek, the winch or the motor being disposed inside the trunk in the vicinity a first cheek, and a winding tube of an apron extending between the winch or the motor and the other cheek, the first cheek having in its central part a support pin clean to be engaged in a housing of the crankcase of the winch or engine facing, is characterized in that the housing of the winch or the motor comprises a resilient means for clamping the pin clean to maintain the winch or motor immobilized in rotation relative to the cheek during transport or after setting in place, especially to cash the resistant operating torque, while allowing angular displacement of the winch or engine relative to the cheek for a position adjustment.

In the case of a winch with manual drive with winch drive rod, the angular position of the winch in the trunk, before placement above the opening, is set back from the theoretical position so as to have to turn it, relatively to the cheek, in the direction of the rise of the apron to put the rod of attack.

The elastic means is advantageously formed by a spiral spring disposed against the face of the casing facing the cheek, this spring comprising a central loop to surround the stud, a spring end of the spring being stopped on the face of the housing, the diameter the central loop of the spring in the free state being smaller than the diameter of the stud.

Advantageously, an attachment member is provided on the face of the housing to maintain the other end of the spiral spring in a spaced apart position for which the diameter of the central loop of the spring is greater than the diameter of the stud, the strand being able to then be released for tightening the nipple. This other end of the spring, preferably, extends radially beyond the contour of the winch housing or the engine, and the attachment member is formed by a lug; the strand of the spring can be released from this pin for tightening the stud.

Preferably, the spring strand is wound in the direction of rotation of the winding tube at the descent of the deck. Depending on whether the spring is installed on the right cheek or on the left cheek of the trunk, its direction of winding will be different.

The invention also relates to a drive means, winch or motor, for roller shutter characterized in that the housing of the winch or motor is provided to receive a resilient means of clamping the nipple of a roller shutter box cheek , adapted to keep the winch or the motor locked in rotation during transport or after installation, while allowing angular displacement of the winch or engine relative to the cheek for a position adjustment.

This elastic means is advantageously formed by a spiral spring disposed against the face of the casing of the winch or motor, coming opposite the cheek of the trunk, this spring comprising a central loop to surround the stud, a spring strand being fixed on the face of the housing, the diameter of the central loop of the spring in the free state being smaller than the diameter of the pin.

Advantageously, the face of the casing comprises a lug to maintain the other end of the spring in a spaced apart position for which the diameter of the central loop of the spring is greater than the diameter of the stud, the other end of the spring extending radially. beyond the contour of the housing to be hooked to the lug, which can be released for tightening the nipple.

The invention also relates to a winch for a roller shutter to be held in a trunk by a device as defined above, and characterized in that the winch housing comprises an elastic means for clamping the nipple of a shutter box cheek, adapted to keep the winch locked in rotation during transport or after implementation, while allowing an angular displacement of the winch relative to the cheek for a position adjustment.

The elastic means is advantageously formed by a spiral spring disposed against the face of the casing of the winch coming opposite the cheek of the trunk, a spring strand being fixed on the face of the casing, the diameter of the central loop of the spring to the free state being smaller than the diameter of the nipple.

The face of the winch housing may comprise a lug to maintain the other end of the spring in a spaced apart position for which the diameter of the spring is greater than the diameter of the pin, this other spring strand extending radially beyond the contour of the housing to be hooked to the lug, which can be released for clamping the nipple.

The invention also relates to a rolling shutter box comprising a drive means, winch or motor, for rolling shutter maintained by a holding device as defined above.

Advantageously, when the roller shutter box comprises a winch with manual drive with winch drive rod, the angular position of the winch in the trunk, before placement above the opening, is set back from the theoretical position in order to have it turn, relatively to the cheek, in the direction of the rise of the apron to put on the rod of attack.

• Fig. 1 est une vue schématique en perspective éclatée, partielle, d'un coffre de volet roulant avec treuil et organe de commande manuelle du treuil.
• Fig.2 est une coupe schématique d'un coffre en place, selon un plan vertical orthogonal à l'axe d'enroulement.
• Fig. 3 est une vue arrière du treuil avec le moyen élastique de serrage selon l'invention.
• Fig. 4 est une vue en élévation du ressort spiral selon trois positions.
• Fig. 5 est une vue en perspective du treuil mis en place dans la joue du coffre.
• Fig. 6 montre, semblablement à Fig. 5, le treuil et la joue alors que le brin du ressort a été libéré.
• Fig. 7 est une vue en perspective, sous un autre angle, de la joue et du treuil, avec la tringle d'attaque en cours d'engagement, et
• Fig. 8 est une vue en élévation, légèrement en perspective, du treuil en place avec la tringle d'attaque engagée dans le treuil.

The invention consists, apart from the arrangements set out above, in a number of other arrangements which will be more explicitly discussed below with respect to an embodiment described with reference to the accompanying drawings, but which is in no way limiting. On these drawings:

• Fig. 1 is a schematic perspective exploded partial view of a roller shutter box with winch and manual control member of the winch.
• Fig.2 is a schematic section of a trunk in place, in a vertical plane orthogonal to the winding axis.
• Fig. 3 is a rear view of the winch with the elastic clamping means according to the invention.
• Fig. 4 is an elevational view of the spiral spring in three positions.
• Fig. 5 is a perspective view of the winch set up in the cheek of the trunk.
• Fig. 6 shows, similarly to Fig. 5 , the winch and cheek while the spring strand was released.
• Fig. 7 is a perspective view, from another angle, of the cheek and the winch, with the attack rod being engaged, and
• Fig. 8 is an elevation view, slightly in perspective, of the winch in place with the drive rod engaged in the winch.

Referring to Fig. 1 and 2 , we can see a chest 1 ( Fig. 2 ) rolling shutter winding V, schematically shown. The trunk 1 comprises a prismatic cover 2, formed by an upper wall, a front wall and a bottom wall, which surrounds the apron 3 of the shutter when it is wound on the tube 4.

The chest 1 is closed at each end by a cheek 5a, 5b whose contour is conjugated with the polygonal cross section of the lid 2.

A winch 6 is disposed inside the trunk 1 in the vicinity of a first cheek 5a. The winding tube 4 of the apron extends between the winch 6 and the other cheek 5b. The winding tube 4 has a generally cylindrical shape with ribs and longitudinal grooves which engage with ribs and conjugate grooves of end sleeves 7a, 7b which can engage the tube 4. The sleeve 7a comprises, at its end facing the winch 6, a housing in which the output shaft 8 of the winch 6 engages to rotate the tube 4. The other sleeve 7b has, at its end facing the cheek 5b, a axial extension 9, of smaller outer diameter, having an axial cylindrical housing in which is engaged a support pin provided on the inner face of the cheek 5b. Plates 10 having openings for passage of the tube 4 are provided for closing the cheeks 5a, 5b inwards and guiding the apron.

The first cheek 5a comprises, in its central part, a support pin 11 ( Fig. 1 ) to be engaged in housing 12 ( Fig. 3 ) of the housing 13 of the winch 6, facing the cheek 5a.

Fig. 2 illustrates the case of a rolling shutter assembly in renovation, according to which the winding case 1 is reported, making it possible to hide the rolled deck 3, above a window W. Fig. 2 , the chest 1 is placed in front of the lintel. In some cases, the trunk can be positioned under the lintel. The control of the winch is ensured by means of a drive rod 14, with a polygonal section, which must be engaged in a housing 15 ( Fig. 7 ) crossing the winch diametrically. A rod 14a ( Fig.2 ), provided with a crank 14b, is connected to the rod 14 by a joint 14c with single or double articulation. To fully engage the rod 14 in the housing 15, it The axis of the housing 15 and that of the rod 14 must be aligned, with the same angular orientation relative to the cheek 5a. The operating rod 14 to pass through the frame 16 ( Fig.2 ) of the carpentry, the installer will perform a drilling 17 in this woodwork to allow to bring the order inside the house. Depending on the configuration of the joinery, including the thickness of the frame 16 and the tolerance of the location, the bore may be positioned so that it defines a maneuvering angle of the rod 14 slightly different from the initial position of the housing 15 made in the workshop. It will therefore be necessary that the winch 6, while immobilized sufficiently in rotation to prevent the rolled deck from going down on its own, can turn slightly in the cheek 5a by an angle α ( Fig.2 ) to ensure the alignment of the housing 15 and the drive rod 14.

To allow this flexibility, according to the invention, the housing of the winch comprises a resilient means E for clamping the pin 11, adapted to maintain the winch 6 immobilized in rotation relative to the cheek 5a during transport, or after installation, in particular to cash the resisting torque of operation. The tightening of the pin 11, however, allows an angular displacement of the winch 6 relative to the cheek 5a, when sufficient torque is exerted.

The clamping means E is advantageously constituted by a spiral spring 18 fixed on the face of the housing 13 facing the cheek 5a. The spring 18 comprises a central loop 18a, which surrounds the stud 11. The fixing of the spring 18 can be ensured by means of a groove provided in the face of the housing, surrounding the housing 12 and a radial groove 19 in which is housed an end strand 20 of the spring 18. The radial extent of the strand 20 is less than the outer radius of the casing 13. The maintenance of the strand 20 in the groove 19 is provided by the head of a screw 21 screwed into the wall of the casing 6. The other radial end strand 22 of the spring 18 has a length greater than that of the strand 20 so as to exceed the circular outer contour of the casing 13 of the winch.

In the free state of the spring 18, its substantially circular central loop 18a has a diameter D1 ( Fig. 4 ) less than the diameter of the stud 11. Commonly, the diameter of the stud 11 is 12 mm. Sure Fig. 4 the position of the strand 22, when the spring is in the free state, is designated 22a.

To facilitate the engagement on the pin 11, the strand 22 is held on the casing 13 by a pin 23 (FIG. Fig. 3 ) provided at the periphery of the housing, in a position 22b corresponding to a larger opening of the central loop 18a of the spring and an internal diameter of this loop greater than the diameter of the stud 11. When the winch has been placed on the nipple 11, and oriented in its provisional position, it is sufficient to unhook the free end 22 of the lug 23 so that the spring 18, by its central loop 18a, comes to tighten the pin 11 to lock the winch in rotation. The clamping position taken by the free strand 22 corresponds to the position 22c on Fig. 4 between positions 22a and 22b. The tightening exerted on the pin 11 remains slippery, which makes it possible to turn the winch 6 later on the pin 11 to engage the drive rod 14 in its final position.

The sliding torque of the spring 18 clamped on the pin 11 is not identical in both directions of rotation, and depends on the winding direction of the spring wire. The torque to be exerted to turn the winch relative to the pin 11 will be higher when the winch 6 rotates in the direction corresponding to the winding of the spring 18 on the pin; this torque will be lower when the winch 6 tends to unwind the spring 18 relative to the stud 11.

To ensure good support of the resistant torque exerted by the spring 18, opposing the weight of the deck 3, it is desirable that the spring 18 has a tendency to wind on the stud 11 under the effect of the weight of the deck .

Depending on the maneuvering side defined to install the winch 6, it will be necessary to choose either a spring wound clockwise or counterclockwise. Advantageously, two spring models are made, one with a spiral wound in a clockwise direction and the other wound in a counterclockwise direction. At the site, the installer when engaging the drive rod 14 in the housing 15 of the winch through the bore 17 that he made in the woodwork, will turn the winch slightly 6 by the engagement force of the rod 14 in the housing 15 of the winch, because all will seek to self-align.

It is desirable that the installer tends to rotate the winch 6 on the pin 11 in the direction that tends to unroll the spring 18 on the pin so that the handling is easier. This direction of rotation, regardless of the installation side of the winch, always corresponds to the direction of rotation of the tube 4 ensuring the rise of the apron 3. Thus the manufacturer of the trunk will always guide the winch 6 at an angle for which the l axis 15a ( Fig. 2 ) of the housing 15 is recessed at an angle α of the theoretical position so that the installer, by engaging the drive rod 14 in the housing 15, rotates the winch 6 in the direction of the rise of the deck.

The establishment of the winch against the cheek 5a immediately results from the foregoing explanations.

The winch is delivered with the strand 22 hooked to the pin 23 as shown on Fig. 3 and 5 . It is then possible to easily engage the pin 11 in the housing 15 crankcase. When this installation has been carried out and the orientation of the winch 6 is suitable, the strand 22 of the pin 23 is disconnected as shown in FIG. Fig. 6 , which causes the clamping of the stud 11 by the central loop 18a of the spring 18.

The drive rod 14 is then engaged in the housing 15, aligning, if necessary, by rotating the housing 13 around the pin 11 by overcoming the sliding torque exerted by the spring 18.

Maintaining the winch provided by the spring 18 on the stud 11 avoids a fixing screw, or equivalent means, the housing 13 on the cheek 5a.

The drawings and the description relate to a driving means of the winding tube 4 formed by a winch. However, the invention also applies to a drive means formed by an electric motor whose housing, or stator, comprises a housing for receiving the pin 11 and a spring fixed to the face of the housing clean to tighten the pin 11 cheek 5a. Such an electric motor assembly is particularly simple and fast and can allow a better choice of orientation of the limit switches of the limit switches at the time of installation on site.

Although the description was made about a rolling shutter box installed in renovation, this example is not limiting. The invention can very well apply to new boxes, provided that a central pin 11 is provided on the cheek adjacent to the winch housing.

Claims (10)

1. Device for holding a winch or a motor of a roller shutter in a winding box which is closed at either end by a side plate, the winch or the motor being arranged inside the box close to a first side plate, and a winding tube for an apron extending between the winch or the motor and the other side plate, the first side plate comprising in its central part a support lug that is designed to fit into an opposite recess of the casing of the winch or of the motor, characterized in that the casing (13) of the winch (6) or of the motor comprises elastic means (E) for gripping the lug (11) that is able to hold the winch (6), or the motor, such that it cannot rotate relative to the side plate (5a) during transport or after installation, in particular in order to contain the actuation-resisting torque while allowing angular displacement of the winch or of the motor relative to the side plate for position adjustment.
2. Device according to Claim 1, characterized in that the elastic means (E) consists of a torsion spring (18) arranged against the face of the casing (13) opposite the side plate (5a), this spring comprising a central coil (18a) for surrounding the lug (11), one leg (20) of the spring being held on the face of the casing, the diameter (D1) of the central coil (18a) of the spring in the relaxed state being smaller than the diameter of the lug (11).
3. Device according to Claim 2, characterized in that a latching member (23) is provided on the face of the casing (13) so as to hold the other leg (22) of the torsion spring in an opened position in which the diameter of the central coil (18a) of the spring is greater than the diameter of the lug, it then being possible to release the leg (22) in order to grip the lug.
4. Device according to Claim 3, characterized in that the other leg (22) of the spring (18) extends radially beyond the contour of the casing (13) of the winch or of the motor, the latching member being formed by a spur (23), wherein the leg (22) of the spring can be released from this spur in order to grip the lug.
5. Device according to one of Claims 2 to 4, characterized in that the leg (20) of the spring (18) is wound in the direction of rotation of the winding tube (4) during lowering of the apron.
6. Winch for a roller shutter designed to be held in a box by a device according to any one of Claims 1 to 5, characterized in that the casing (13) of the winch comprises an elastic means (E) for gripping the lug (11) of a roller shutter box side plate, which is able to hold the winch such that it cannot rotate during transport or after installation, while allowing angular displacement of the winch relative to the side plate for position adjustment.
7. Winch according to Claim 6, characterized in that the elastic means (E) consists of a torsion spring (18) arranged against the face of the casing (13) of the winch opposite the side plate of the box, this spring comprising a central coil (18a) for surrounding the lug (11), one leg (20) of the spring being secured to the face of the casing, the diameter of the central coil (18a) of the spring in the relaxed state being smaller than the diameter of the lug.
8. Winch according to Claim 7, characterized in that the face of the casing (13) comprises a spur (23) for holding the other leg (22) of the spring in an opened position in which the diameter of the central coil (18a) of the spring is greater than the diameter of the lug (11), this other leg (22) of the spring extending radially beyond the contour of the casing to be latched onto by the spur (23) from which it can be released in order to grip the lug.
9. Roller shutter box comprising a winch or a motor that is held by a holding device according to any one of Claims 1 to 5.
10. Roller shutter box according to Claim 9, comprising a manual-drive winch with a winch driving rod, characterized in that the angular position of the winch (6) in the box, before installation above an opening, is set back from the theoretical position such that it must be rotated, relative to the side plate, in the direction of raising the apron in order to insert the driving rod (14).

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