EP1525598B1 - Device for controlling a motorized shutter - Google Patents

Abstract

Disclosed is a device ( 30 ) for manually controlling the position of switching means which have two extreme positions A and C and an intermediate position B. Said device comprises a crank ( 5 ) and a crankpin ( 6 ). The invention is characterized by the fact that the device comprises a translationally movable sliding member ( 1 ) that has a neutral position and is provided with guideways ( 20, 21 ), within which the crankpin ( 6 ) is displaced. Said guideways allow the crankpin to be guided towards three areas of the sliding member, in which the position thereof is stable and which correspond to the three positions of the switching means, when the sliding member is moved towards the neutral position. The inventive device has the advantage of being simple while allowing a change in the state of the motor which operates the closing element, darkening element, or sun-shading element, or sun-shading element to be controlled by means of a single movement of a rod ( 14 ).

Description

The present invention relates to a device for manually controlling the position of switching means of the power supply of an actuating motor of a closure element, occultation or sun protection. It relates in particular to a device according to the preamble of claim 1 and a control method of an engine implemented by such a method.

Two positions of the switching means allow the power supply of the motor to rotate it respectively in a first direction of rotation and in a second direction of rotation. The third position of the switching means is a position in which the motor is not powered.

From the patent application EP 0 936 342 a control device is known comprising a switch controlling the power supply of a motor and means for actuating this switch. These actuating means consist of a bistable mechanical device that can occupy a first state in which the switch is closed and a second state in which the switch is open.

The bistable mechanism consists of a cylindrical piece movable in translation and rotation in a fixed cylindrical tubular piece to which it is connected by the action of a lug of the moving part on a ramp of the fixed room. The moving part is pushed towards the switch by a spring and is connected to a manually operable pulling member for moving the moving part against the action of the spring. The device is brought into its first state by an action on the traction member and brought into its second state, either by a second action on the traction member, or by a resistant torque exerted on the motor causing a rotational movement relative between the moving part and the fixed part.

We also know the demand DE 26 22 229 , a bistable switch comprising a drawer movable in translation in which moves an axis kinematically connected with electrical contacts.

From the patent FR 025384 , there is known an electric control device of a motor for the operation of shutters and doors allowing the engine power in one direction or the other by a manual action and the automatic shutdown of the engine when the shutter or the door reaches the end of the race. This device comprises a rotary three-phase inverter switch that can be placed in three positions corresponding to the power supply of the motor in two directions and when the motor stops. The power supply positions are performed through two cables rotating the shaft of the switch carrying the contacts. Stopping the engine can be done by an action on the cables to bring back the switch in its intermediate position. When the door or the shutter reaches the end of travel, cams cooperate with levers to return the shaft of the switch carrying the contacts in its intermediate position.

We still know the demand FR 2,473,221 a three-position electrical switch comprising a drawer movable in translation in which moves a pin integral with a lever acting on electrical contacts. Successive actions on the slide switch the switch from one contact position to another via an unstable position in which there is no electrical contact.

Such embodiments have disadvantages. The first embodiments do not allow to put the door or shutter moving in one direction and then in the other by the same manual action.

Other achievements allow it. However, in one of the embodiments, the actions must be performed on two different organs, one allowing the rise, the other the descent, and the architecture of this realization is complex, expensive and requires a lot of space. And, in the other embodiment, there is no intermediate position for stopping the motorized element between the two contact positions.

From the patent application FR 2,813,456 , there is known a manual control device of an electric motor for roller shutter. It comprises a plate secured to an electric motor. This plate has two housings respectively receiving a barrel and a switch. A rod connected to a ring and passing through the wall of the plate allows to rotate the barrel through a ratchet wheel system. The rotational movement of the barrel is converted by a crank-handle system into a translational movement of a slider driving the switch. When the shutter reaches the end of the race, means are used to recall the switch in an equilibrium position in which the engine is not powered.

This device has disadvantages. His many moving parts make it complicated. In addition, when the shutter has reached the end of the race, it is necessary to act twice on the rod to command him to move in the opposite direction.

The invention aims to provide a manual control device overcoming these disadvantages and improving the devices known from the prior art. In particular, the invention proposes to provide a simple device allowing, by a single action on a rod, to control the change of state of the operating motor of the closure element, occultation or sun protection. In addition, the device must allow the power supply to stop motor when the driven element reaches the end of its travel.

The control device according to the invention is characterized by the characterizing part of claim 1.

Dependent claims 2 to 7 define embodiments of the device according to the invention.

The process according to the invention is defined by claim 8.

• La figure 1 est une vue en coupe d'un premier mode de réalisation du dispositif de commande manuelle selon l'invention.
• La figure 2 est une vue en coupe selon le plan II-II de la figure 1 de ce mode de réalisation.
• La figure 3 est une vue similaire à celle de la figure 1, le tiroir étant représenté dans une autre position.
• La figure 4 est une vue en coupe transversale des moyens de commutation.
• Les figures 5a à 5l sont des vues schématiques du dispositif de commande selon le premier mode de réalisation, représenté dans des positions successives du tiroir.
• Les figures 6 et 7 sont des vues en coupe du dispositif de commande selon une première variante du premier mode de réalisation, le tiroir étant représenté dans deux positions.
• La figure 8 est une vue en coupe du dispositif de commande selon une deuxième variante du premier mode de réalisation.
• La figure 9 est une vue schématique du dispositif de commande selon cette deuxième variante.
• La figure 10 est une vue schématique du dispositif de commande selon une troisième variante du premier mode de réalisation.
• La figure 11 est une vue de face du tiroir du dispositif de commande selon un deuxième mode de réalisation.
• Les figures 12 et 13 sont des vues en coupe partielle selon les plans XII-XII et XIII-XIII du tiroir du dispositif de commande selon le deuxième mode de réalisation.
• Les figures 14a à 14j sont des vues schématiques du dispositif de commande selon le deuxième mode de réalisation, représenté dans des positions successives du tiroir.

The appended drawing shows, by way of example, two embodiments of the manual control device according to the invention.

• The figure 1 is a sectional view of a first embodiment of the manual control device according to the invention.
• The figure 2 is a sectional view according to plane II-II of the figure 1 of this embodiment.
• The figure 3 is a view similar to that of the figure 1 , the drawer being shown in another position.
• The figure 4 is a cross sectional view of the switching means.
• The Figures 5a to 5l are schematic views of the control device according to the first embodiment, shown in successive positions of the drawer.
• The Figures 6 and 7 are sectional views of the control device according to a first variant of the first embodiment, the drawer being shown in two positions.
• The figure 8 is a sectional view of the control device according to a second variant of the first embodiment.
• The figure 9 is a schematic view of the control device according to this second variant.
• The figure 10 is a schematic view of the control device according to a third variant of the first embodiment.
• The figure 11 is a front view of the drawer of the control device according to a second embodiment.
• The Figures 12 and 13 are views in partial section along planes XII-XII and XIII-XIII of the control device drawer according to the second embodiment.
• The Figures 14a to 14j are schematic views of the control device according to the second embodiment, shown in successive positions of the drawer.

The control device, represented at figure 1 , mainly comprises a shaft 2 movable in rotation in a bore 44 made in a frame 10 and rotatably connected at its end by a coupling 3 and 4 to a crank 5 terminated by a crankpin 6 and a drawer 1 movable in translation in a folder 9 integral with the frame 10. This control device allows the power supply of a motor driving a load such as a shutter, a door or any other element.

The shaft 2 and the frame 10 cooperate to produce means for switching the current during rotation of the shaft 2 in the frame 10. As shown schematically in FIG. figure 4 , the shaft has terminals 45 along its longitudinal axis intended to come into contact with terminals 42 arranged axially in the bore 44 or with terminals 43 arranged axially in the bore 44, depending on the direction in which one turns the tree. Position A, represented at figure 4a , in which the terminals 45 and 42 are in contact allows the closure of an electrical circuit so as to supply the motor (not shown) to rotate in a first direction of rotation. Position C, represented in figure 4c , in which the terminals 45 and 43 are in contact allows the closure of an electrical circuit so as to supply the motor to rotate in a second direction of rotation. Position B, represented at figure 4b , in which the terminals 45 are not in contact with any other allows the opening of the motor supply circuit.

The shaft 2 has at one of its ends a hexagonal hollow form 3 receiving a crank 5 provided with a hexagonal male form 4 and a crankpin 6. The shaft 2 and the crank 5 are connected in rotation by these complementary shapes 3 and 4.

The shaft may also have no electrical contact and consist of a simple transmission shaft whose function is to position a switch, for example integrated in the motor, depending on the position of the crankpin 6 in the drawer.

The slide 1 is in sliding connection in the sleeve 9. Its translation axis is perpendicular to the axis of rotation 7 of the shaft 2. The slide 1 and the jacket 9 have respectively an ear 12 and an ear 11, each provided with a hole. The ends of a spring 8 to recall the drawer 1 at the bottom of the sleeve 9 are articulated in these holes.

The drawer 1 has another ear 13 opposite the ear 12. This ear 13 is also provided with a hole from which, as shown in FIG. figure 3 it is possible, by means of a rod 14, applying traction forces to the drawer 1 so as to move the latter in translation against the action of the return spring 8.

The drawer 1 is provided with paths 20 and 21 in which the crankpin 6 moves. A leaf spring 17 recalls the drawer 1 against the crankpin 6 so that it is constantly moving to the bottom of the paths 20 and 21 These paths 20 and 21 have different levels with respect to the axis of rotation 7 of the shaft 2.

The crank pin 6 can move from the lower level, in which it moves to the figure 1 , at the top level, in which he moves to the figure 3 due to a ramp 27. Indeed, when the crankpin moves in the lower path and comes into contact with the ramp 27 through the movement of the slide 1 under the effect of a tensile force on the 14, the contact action of the crankpin 6 on the drawer 1 pushes the latter against the action of the spring 17. Thus, the crankpin 6 can climb the ramp 27.

The crankpin 6 can also move from the upper level, in which it moves to the figure 3 , at the lower level, in which he moves to the figure 1 , thanks to steps 24a and 24b represented at figure 2 . In this case, it is the spring 17 which recalls the drawer 1 in a position in which the crankpin 6 is at the bottom of the path 21.

The slide 1 has a rocker 15 movable in rotation about an axis parallel to the axis 7 of the shaft 2. This rocker 15 has two stable positions symmetrical with respect to the axis of translation of the slide 1. It is constituted two side arms and a central arm. As represented in figure 2 , it makes it possible to direct the crankpin in the path A, thanks to the contact of the crankpin 6 on its central arm, then it tilts in its other stable position at the moment of the passage of the crankpin 6 in the path A by contact of the crankpin 6 on its arm Laterally closing the path A. In this way, the next time the crankpin 6 passes on the ramp 27, it will be directed in the path B.

The transverse displacements of the crankpin 6 in the paths of the spool 1 cause rotations of the shaft 2 in the frame 10 so as to cause the motor to be fed to turn it in a first direction, or the power supply to the motor for the rotate in a second direction or stop the engine. The drawer has three zones a, b and c represented at figure 5b and at the figure 10 in which the crankpin has a position such that the switching means are in extreme positions A, C or intermediate B.

We now refer to Figures 5a to 5l representing the course that will follow the crankpin 6 in three successive actions on the rod 14.

To the figure 5a , the crankpin 6 is in its intermediate position B with respect to its tilting movement about the axis 7 of the shaft 2. This position corresponds to stopping the engine. From this position, a traction force F is applied to the slide 1 via the rod 14. This causes the slide 1 to move relative to the jacket 9, and consequently the displacement of the crankpin 6 relative to in drawer 1.

Under the action of this effort F, the crankpin 6 crosses the ramp 27 and comes into contact with the central arm of the rocker 15 as shown in FIG. figure 5b .

Always under the action of the effort F, as represented at figure 5c , the crankpin 6 moves along a ramp 22a and tilts the rocker 15 in its other equilibrium position. Once the crankpin 6 arrived at the end of the ramp 22a, it removes the tensile force F.

As represented in figure 5d , the drawer 1 is driven by the spring 8 exerting a return force R and resulting in the contacting of the crankpin 6 with the ramp 23a. The crankpin moves on this ramp 23a until ending up in the position shown in FIG. figure 5e .

The spring 8 always applying a return force, the crank pin 6 moves by crossing the step 24a until coming into the stable position represented in the figure 5f .

In this position, the motor is powered and rotates in a first direction of rotation. As soon as we want to stop the motor, we apply again a tensile force F on the rod 14, as shown in FIG. figure 5g . The pin 6 then comes into contact against the step 24a and moves against it and against the ramp 25a to its end as shown in FIG. figure 5h . This step is a means of permanently deflecting the crankpin heading towards the path above the step.

Therefore, the traction force is suppressed, and, under the effect of the return force R, the crank pin comes into contact with the ramp 26a and moves along it as shown in FIG. figure 5i .

Arrived at the end of this ramp 26a, the crankpin 6 is found in its stable position of the figure 5a . In this position, the engine is not powered.

When a new traction force F is applied to the slide 1 via the rod 14, the crankpin 6 again crosses the ramp 27 and comes into contact with the central arm of the rocker 15 as shown in FIG. figure 5k . Therefore, the crankpin 6 will follow a symmetrical path, with respect to the axis of sliding of the drawer, to the path described over time. Figures 5a to 5j resulting in a different power supply of the motor so as to rotate in a second direction of rotation.

When the element driven by the motor arrives at the end of travel or on an obstacle, means known to those skilled in the art allow the switching means to be positioned in their "engine stop" state. This is done by a rotation of the switching means around the axis 7 of the shaft 2 and results in the displacement of the crankpin 6 in the drawer 1 as shown in FIG. figure 5l . The drawer is therefore provided with a path 103 having substantially the shape of an arc passing through the three stable positions of the crankpin in the drawer.The crankpin is then found in a stable position shown in FIG. figure 5j .

In this embodiment, the paths define three stable positions that can be occupied by the crankpin when the drawer is returned to its rest position and corresponding to the three positions of the switching means. These paths are substantially in the form of inverted Vs. A first wing 100 of the V serving to move the crankpin transversely relative to the drawer when it is moved in a first direction and the second flange 101 for moving the crankpin transversely relative to the drawer in the same direction when it is moved in the other direction.

Depending on the nature of the switching means and in particular according to their ability to remain stably in a position in which they were brought, the ends of these paths may or may not have means for holding the crank pin in position to the end of the path. These means may consist for example of bowls 102 as represented in FIG. figure 10 . The crankpin is positioned in these when it reaches the end of the path.

The drawer could also be recalled in its rest position by other efforts than that of an elastic element. It could in particular be recalled by its own weight or by an action of the user through the rod.

A first variant of this embodiment is shown in Figures 6 and 7 . The control device 40 shown in these figures differs from the previously described device in that the drawer 1 is not recalled in contact with the crankpin. Indeed, in this case, it is the crank 41 which is constituted by resilient strips to recall the crankpin 6 at the bottom of the paths of the drawer 1.

A second variant of this embodiment is shown in Figures 8 and 9 . The control device 50 shown in these figures differs from the previously described devices in that the paths 52 of the drawer 1 have only one level. By therefore, means of recalls of the crankpin 6 and paths 52 with each other are no longer necessary.

However, flaps 51a and 51b hinged about horizontal axes and consisting of tabs made of an elastic material are added in the paths 52. They are intended to replace the steps 24a and 24b of the devices described above. Indeed, these flaps 51a and 51b allow the movement of the crankpin in one direction in the two vertical side channels of the drawer 1 shown in FIG. figure 9 . It should be noted that the tongues can also be articulated about parallel axes at the bottom of the paths 52. These tabs are means for permanently deflecting the crankpin heading to the paths located above the tabs.

A third variant of this embodiment is shown in FIG. figure 10 . The drawer 1 of the control device shown in this figure differs from the drawer described above in that it has no flap. However, it has ramps 75a and 75b making it possible, after having applied a force on the slide 1, to bring the crankpin 6 into a stable position such that, when acting again on the slide 1, the crankpin 6 comes into contact one of the ramps 76a or 76b, then in contact with one of the ramps 77a or 77b to bring it into its stable position corresponding to the engine stop.

When the crankpin 6 is in its stable position for supplying the motor and the element driven by the motor reaches the end of the stroke, the switching means being returned to their "engine stop" position, the crankpin 6 acts on the ramp 78a or the ramp 78b and moves the slide 1 against the action of the return spring 8 to escape its equilibrium position "engine power".

The drawer 61 and the crank pin 70 of a second embodiment are shown in FIGS. Figures 11 to 13 . This crank pin 70 differs from the crankpin of the devices previously described in that it has a shoulder 71. The drawer 61 differs from the previously described drawers in that the paths have three levels: a path 62 at a lower level, two paths 63 and 64 at a higher level and a path 65 at an intermediate level. The drawer 61 has a ramp 66 allowing the crank pin 70 to pass from the path 62 to the path 63 and a ramp 67 allowing the crank pin 70 to go from the path 65 to the path 64. The drawer 61 has a step 68 allowing the crankpin to go from the path 63 at 65 and a step 69 allowing the crankpin 70 to pass from the path 64 to the path 62.

Referring to diagrams 14a to 14i, the principle of operation of such a device is explained.

To the figure 14a , the crank pin 70 is in contact with the path 65. After acting on the slide 61, it moves and crosses the ramp 67 and moves transversely until it reaches the position shown in FIG. figure 14c and wherein the motor is energized to rotate in a first direction of rotation. The action of the return spring then returns the crankpin to a stable position shown in FIG. figure 14d .

A new action on the spool 61 makes it possible to return the crankpin 70 to an equilibrium position, represented in FIG. figure 14h in which the motor is not powered. The crankpin is then in contact with the path 62. A new action on the spool 61 allows as shown in FIG. figure 14i , direct the crankpin to the ramp 66 and move the crank 70 transversely to supply the engine so that it rotates in a second direction of rotation.

It should be noted that the shaft 2 mobile in rotation in the frame 10 can be stable in the three positions "supply of the motor in a first direction", "supply of the motor in a second direction" and "stop engine". In this case, when in a power supply position of the engine, a force of the spool on the crankpin is required to tilt it into the engine stop position. In this case, it is possible to use a drawer which is not returned to a rest position. It is then necessary to carry out a back and forth movement with the rod to change the position of the switch.

Claims (8)

1. Device (30; 40; 50) for the manual control of the positions of commutation means (42, 43, 45), these positions comprising two extreme positions A and C and an intermediate position B, the device including a crank (5; 41) and a crank stud (6; 70) and being adapted for controlling the electrical power supply of a driving motor for a closing, privacy or solar protecting element, the device further including a mobile slider (1; 61) for translation comprising a rest position and equipped with tracks (20, 21; 52; 62, 63, 64, 65) in which the crank stud (6; 70) travels, characterised in that the tracks allow the guidance of the crank stud, when the slider is displaced to its rest position, to three zones (a, b and c) of the slider in which its position is stable and which correspond to the three positions of the commutation means.
2. Device (30; 40; 50) for the manual control according to claim 1, characterised in that the slider includes a track (103) that allows the displacement of the crank stud when the commutation means are displaced from one of said positions into another one.
3. Device (30; 40; 50) for the manual control according to claim 1 or 2, characterised in that the slider includes at least one means (51a, 51b, 24a, 24b) allowing to permanently deviate the crank stud from certain tracks.
4. Device (50) for the manual control according to claim 3, characterised in that the means allowing to permanently deviate the crank stud from certain tracks comprises a resilient tongue (51a, 51b).
5. Device for the manual control according to claim 4, characterised in that the resilient tongue is articulated around an axis that is parallel to the bottom of the track.
6. Device for the manual control according to claim 3, characterised in that the means allowing to permanently deviate the crank stud from certain tracks comprise a ramp (27) and steps (24a, 24b) providing tracks (20, 21) having several levels with respect to the direction of the axis of the crank stud, and means (17; 41) for a return motion of the crank stud to the bottom of these tracks (20, 21).
7. Device for the manual control according to claim 6, characterised in that the slider comprises T shaped grooves co-acting with the crank stud (70) and having a shoulder in order to generate a circuit allowing to bring the commutation means (42, 43, 45) to the following positions by successive actions on the slider (61):

   - intermediate position B,

   - first extreme position A,

   - intermediate position B,

   - second extreme position C,

   - intermediate position B.
8. Method for the manual control of the position of commutation means of a device according to one of the preceding claims, characterised in that the commutation means are displaced to the following stable positions by successive actions on the slider:

   - intermediate position B,

   - first extreme position A,

   - intermediate position B,

   - second extreme position C,

   - intermediate position B.

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