FR3066527A1 - CLOSURE DEVICE WITH TWO SPEED POSITION SENSOR AND METHOD FOR OPERATING A MOBILE WALL - Google Patents

Abstract

The present invention relates to a device (1) for closing the access section (Z) to a space, comprising a wall (2) that can be actuated between an open position of this access section (Z). and a closed position of this access section (Z), which reduces the time required for the passage of said wall (2) between said open position and closed position.

Description

CLOSING DEVICE WITH TWO-SPEED POSITION SENSOR AND METHOD FOR OPERATING A MOBILE WALL

DESCRIPTION

The subject of the present invention is a device for closing the access section to a space, comprising a wall which can be actuated between an open position of this access section and a closed position of this access section, which reduces the time required for the passage of this wall between said open position and closed position.

Currently, closing devices intended to close access sections to spaces include a movable wall and an actuation system which makes it possible to determine a movement of this wall between a position for closing this access section and a position opening of the same access section, namely a movement from the open position to the closed position or vice versa.

The speed of the wall during this movement cannot reach too high values because, taking into account the necessary final deceleration of this movement, this could cause damage to one or more components of the closing device (for example, early wear, blocking, etc.).

The purpose of this description is to provide a device for closing a section of access to a space, comprising a wall which can be actuated between an open position of this access section and a closed position of this same. access section, which makes it possible to reduce, compared to currently known closing devices, the time necessary for the passage of this wall between said opening position and closed position, without this having any negative consequences on the device closing.

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Another object of the present description is to provide a method of actuating a wall which can be actuated between an open position of this access section and a closed position of this same access section, which makes it possible to reduce, compared to currently known methods, the time required for the passage of this wall between said open position and closed position, without this having any negative consequences on the closing device.

According to a first aspect, the present description relates to a device for closing an access section to a space.

The device includes a movable wall. The movable wall is intended to be subjected to a movement from an initial position of said wall to a final position of said wall.

Said initial position and end position may be, respectively, an open position of said access section and a closed position of said access section, or vice versa.

The closure device includes a control system.

The control system includes an actuation system.

The actuation system is configured to determine said movement so that said wall takes, during said movement, a plurality of intermediate positions between said initial position and final position.

This actuation system is configured to determine, during said movement, at least a first variation of at least one speed of said movement.

The control system includes a sensor group.

The sensor group is configured to perform, during said movement, at least a first detection of a positioning of

S65238 said wall in a predefined intermediate position of said movable wall.

The control system includes a control unit.

The control unit is in communication with said actuation system and said sensor group.

The control system is configured so that this first variation takes place following said first detection.

According to a second aspect, the present description relates to a method of actuating this wall.

The method comprises an actuation phase during which a movement of said wall is determined from the initial position of said wall to the final position of said wall.

The method comprises a first detection phase during which, during said movement, at least said first detection of a positioning of said wall in a predefined intermediate position of said movable wall is carried out.

The method comprises a first control phase during which, during said movement, at least said first variation of said speed is determined.

This first control phase takes place automatically, following said first detection phase.

The characteristics of a device according to the first aspect of this description and of a method according to the second aspect of this description will be made more salient in the detailed description which follows, relating to respective exemplary embodiments of said device according to first aspect and of said method according to the second aspect, provided by way of nonlimiting example of the concepts claimed.

The following detailed description refers to the accompanying drawings, in which:

S65238 Figure 1 is a perspective view of a possible embodiment of a closure device according to the first aspect of this description;

Figure 2 is a block diagram of a control system belonging to the device of Figure 1;

Figure 3 is an explanatory diagram of a possible embodiment of a method according to the second aspect of this description;

Figure 4 is a front view of the device in a possible open position of a wall of said device;

Figure 5 is a front view of the device in a possible intermediate position of said wall;

Figure 6 is a front view of the device in a possible closed position of said wall;

Figure 7 is a perspective view of part of said possible embodiment of the closure device;

Figure 8 is another perspective view of the part of Figure 7;

Figure 9 is another perspective view of the portion of Figures 7 and 8, but with a component removed;

Figure 10 is a side view of the portion of Figures 7-9;

FIG. 11a is a front view of a sensor group of said embodiment of the device, in a first possible operational situation;

FIG. 11 b is a front view of said sensor group of said embodiment of the device, in a second possible operational situation;

FIG. 11c is a side view of said sensor group of said embodiment of the device, in a third possible operational situation;

S65238 FIG. 11d is a side view of said sensor group of said embodiment of the device, in a fourth possible operational situation;

FIG. 12 is a perspective view of an element of said sensor group;

FIG. 13 is a view of another element of said sensor group;

FIG. 14 is a view of said sensor group with an optional additional element.

Figure 1 shows a possible embodiment of a closure device, indicated by the number 1, according to a first aspect of this description.

The closing device 1 comprises a wall 2.

The wall 2 may include any element adapted to obstruct at least partially, or totally, an access section Z to a space, in order to prevent or limit at least partially, or totally, Access to this space through said access section Z.

The wall 2 may comprise (or be made up of) for example a canvas of a curtain or a blind or any other closing element.

This fabric could for example be flexible or be composed of a plurality of elements interconnected mechanically.

The wall 2 is intended to be subjected to a movement between an initial position and a final position.

The device 1 preferably comprises at least one guide to guide this movement. Said at least one guide, not shown in the figures, is intended to slidingly receive at least one of the lateral edges 2a and 2b of the wall 2.

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Said movement takes place by means of a race or path or course of the wall 2. Said race takes place between said initial position and said final position.

An example of said race is shown schematically, in Figure 3, by a line indicated by the letter C.

At each respective instant during the movement of the wall 2 from said initial position to said final position, the wall 2 is positioned in a respective position corresponding to a respective dimension, along the travel C. Each respective dimension can be indicated, by example, by a line transverse to the line indicated by the letter C in figure 3.

Referring to the example of wall 2 in FIG. 1, this dimension could be understood as the dimension at which a front edge 2c of the wall 2 is positioned. With reference to the example of wall 2 and of device closure 1 of FIG. 1, the movement from the initial position to the final position of the wall 2 takes place along a direction transverse to said front edge 2c.

We can consider an initial dimension of wall 2 along the course C.

This initial dimension is the dimension, along the travel C, at which the wall 2 is positioned when the wall 2 takes said initial position.

Said initial dimension is indicated by XINIZ in FIG. 3.

We can consider a final dimension of wall 2 along the course C.

This final dimension is the dimension, along the travel C, at which the wall 2 is positioned when the wall 2 takes said final position.

Said final rating is indicated by XFIN in Figure 3.

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The wall 2 is intended to take a closed position of the aforementioned access section Z to a space, and an open position of this same access section Z.

By "closed position" can be understood a position of the movable wall 2 which is such that said movable wall 2 at least partially limits or completely prevents the possibility of accessing said space through said access section Z.

An example of this closed position is shown in Figure 6.

By "open position" means a position which is such that the movable wall 2 allows said possibility of access, or in any case a position in which said movable wall 2 limits said possibility of accessing in a lesser way that when the wall 2 itself takes said closed position.

An example of this open position is shown in Figure 4.

The aforementioned movement can be considered such that said initial position coincides with said open position and said final position coincides with said closed position, in which case the movement takes place from the open position to the closed position.

Alternatively, the aforementioned movement can be considered such that said initial position coincides with said closed position and said final position coincides with said open position, in which case the movement takes place from the closed position to the open position.

In all cases, said movement can be considered from the initial position to the final position, and therefore from the initial dimension XINIZ to the final dimension XFIN.

For the same closing device 1, the following technical considerations could be applicable as well by considering the initial position as the opening position and the final position as the closing position as vice versa.

The movement of the wall 2 takes place so that the wall 2 itself, during said movement, takes a plurality of successive intermediate positions. These intermediate positions are located between said initial position and said final position.

Hereinafter, when reference is made to a speed of said movement, it is meant a speed which is considered positive in a direction going from said initial position to said final position.

Hereinafter, when reference is made to said movement, is meant a situation in which the wall moves at a positive speed from said initial position to said final position.

We can consider a specific intermediate position of the wall 2.

We can consider a specific intermediate dimension of wall 2.

This specific intermediate dimension is the dimension, along the travel C, at which the wall 2 is positioned when the wall 2 takes, during said movement, said specific intermediate position.

As will be seen more clearly below, this specific intermediate dimension can be considered as a "predefined intermediate position" and this specific intermediate position can be considered as a "predefined intermediate position".

An example of this predefined intermediate position is shown in Figure 5.

An example of a predefined intermediate dimension can be that indicated by XINT in Figure 3.

With reference to the following considerations, the predefined intermediate position should preferably be considered closer to the final position than to the initial position. With reference to the following considerations, the predefined intermediate dimension XINT should preferably be considered closer to the final dimension XFIN than to the initial dimension XINIZ.

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The closing device 1 comprises a control system 3, shown diagrammatically by the block diagram in FIG. 2.

The control system 3 includes an actuation system 4.

The actuation system 4 is configured to determine said movement of the wall 2.

The actuation system 4, for determining said movement of the wall 2, preferably comprises a motor group 41 intended to generate an output motor torque which determines a rotation about a motorized axis. This motorized axis can be parallel or coincide with the axis indicated by the letter M in Figure 1.

The closing device 1 is configured so that, if said initial position coincides with said opening position and said final position coincides with said closing position, said rotation around said motorized axis M generates an unwinding of the wall 2 from an axis of support A of the wall 2, indicated in figure 1.

The closing device 1 is configured so that, if said initial position coincides with said closing position and said final position coincides with said opening position, said rotation around said motorized axis M generates a winding of the wall 2 around said axis of support A of the wall 2.

The support axis A is arranged along the motorized axis M.

The control system 3 comprises a sensor group 5.

The control system 3 comprises a control unit 6.

This control unit 6 could include, for example, a processing unit. This processing unit could include, for example, hardware in which a program and / or software is implemented.

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Said control unit 6 is operationally in communication with and / or connected to said sensor group 5.

To put the control unit 6 in communication with said sensor group 5, the control system 3 preferably comprises a first interface, not shown in the attached figures for reasons of clarity.

This first interface allows the sending of one or more signals from said sensor group 5 to said control unit 6, and the reception, by said control unit 6, of said one or more signals sent and coming from the sensor group 5.

Said first interface could be, for example, wireless. Said first interface could be of another type, for example with wires.

Said control unit 6 is operationally in communication with and / or connected to said actuation system 4.

To put the control unit 6 in communication with said actuation system 4, the control system 3 preferably comprises a second interface, not shown in the accompanying figures for reasons of clarity.

This second interface allows the sending of one or more signals from said control unit 6 to said actuation system 4, and the reception, by said actuation system 4, of said one or more signals originating and sent by the '' control unit 6.

Said second interface could be, for example, wireless. Said second interface could be of another type, for example with wires.

The sensor group 5 is configured to perform, during said movement, at least a first detection r1 of a positioning of the wall 2 in said predefined intermediate position.

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This first detection r1 is represented by the arrow located, in FIG. 2, between the wall 2 and the sensor group 5.

The actuation system 4 is configured to determine at least a first variation v1 of at least one speed of said movement.

This first variation v1 is represented by the arrow located, in FIG. 2, between the actuation system 4 and the wall 2.

The control system 3 is configured so that said at least one first variation v1 takes place following said at least one first detection r1.

The sensor group 5 is configured to perform at least one sending of a first detection signal sr1 to said control unit 6, following said first detection r1.

This first detection signal sr1 is represented by the arrow located, in FIG. 2, between the sensor group 5 and the control unit 6.

The control unit 6 is configured to send at least a first control signal sc1 to said actuation system 4, following the reception, by this same control unit 6, of said first detection signal sr1 .

This first control signal sc1 is represented by the arrow located, in FIG. 2, between the control unit 6 and the actuation system 4.

Said actuation system 4 is configured to determine said first variation v1 of said speed of movement of the wall 2, following reception by this same actuation system 4 of said first control signal sc1.

Said first variation v1 is between at least a first value and at least a second value of said speed.

In this regard, in the direction from the initial position to the final position, before reaching the predefined intermediate position, the

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wall 2 moves with said first speed value, and, once it has exceeded said predefined intermediate position, wall 2 moves with said second speed value.

This first value is preferably greater than the second value, so that the wall 2, via the control system 3, automatically slows down from the first speed value to the second speed value, following the passage of the wall 2 itself in said predefined intermediate position. It will be recalled that the speed of movement of the wall is considered to be positive when the movement goes from the initial position to the final position, that the initial position is considered as the open position and the final position as the closed position, or Conversely.

In this way, before the wall 2 reaches the final position, the wall 2 itself is automatically slowed down. Thus, the movement of the wall 2, in the direction going from the initial position to the final position and before reaching the predefined intermediate position, can even be very rapid, without there being any risk of damage to one or more components of the closing device 1, insofar as, thanks to the control system 3, this speed is reduced when the wall 2 has not yet reached said final position, but sufficiently before.

The sensor group 5 is configured to perform, during said movement, at least a second detection r2 of a positioning of the wall 2 in said final position.

This second detection r2 is represented by the arrow located, in FIG. 2, between the wall 2 and the sensor group 5.

The actuation system 4 is configured to determine at least a second variation v2 of said speed.

This second variation v2 is represented by the arrow located, in FIG. 2, between the actuation system 4 and the wall 2.

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Said second variation v2 is between at least a third value and at least a fourth value of said speed.

This third value could be equal to or different from the second value.

The fourth value is preferably zero.

The control system 3 is configured so that said at least one second variation v2 takes place following said at least one second detection r2.

The sensor group 5 is configured to perform at least one sending of a second detection signal sr2 to said control unit 6, following said second detection r2.

This second detection signal sr2 is represented by the arrow located, in FIG. 2, between the sensor group 5 and the control unit 6.

The control unit 6 is configured to send at least a second control signal sc2 to said actuation system 4, following the reception, by this same control unit 6, of said second detection signal sr2 .

This second control signal sc2 is represented by the arrow located, in FIG. 2, between the control unit 6 and the actuation system 4.

Said actuation system 4 is configured to determine said second variation v2 of said speed of movement of the wall 2, following reception by this same actuation system 4 of said second control signal sc2.

The sensor group 5 preferably comprises at least a first switch 51a, an example of which is visible in FIGS. 11a11d.

The first switch 51a can take a respective non-switching condition and a respective switching condition.

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The sensor group 5 preferably comprises at least one second switch 51b, an example of which is visible in FIGS. 11c-11d. The second switch 51b is however not very visible in Figures 11a-11b because it is largely covered by the first switch 51a. In FIGS. 11c and 11d, the second switch 51b is visible because FIGS. 11c and 11d are seen from a lateral point of view relative to the sensor group 5, while views 11a and 11b can be considered from a point front view.

The second switch 51b can take a respective non-switching condition and a respective switching condition.

The sensor group 5 is preferably configured so that the passage of said first switch 51a from the respective non-switching condition to the respective switching condition determines the sending of said first detection signal sr1, by the sensor group 5, to said unit. control 6.

In Figures 11a-11b, the first switch 51a is in the respective non-switching condition, while in Figures 11c-11d the first switch 51a is in the respective switching condition.

The sensor group 5 is preferably configured so that the passage of said second switch 51b from the respective non-switching condition to the respective switching condition determines the sending of said second detection signal sr2, by the sensor group 5, to said unit. control 6.

In FIGS. 11a-11c, the second switch 51b is in the respective non-switching condition, while in FIG. 11d the second switch 51b is in the respective switching condition.

The sensor group 5 is preferably configured so that the passage of said wall 2 at said intermediate position

S65238 predefined determines the passage of the first switch 51a from the respective non-switching condition to the respective switching condition.

The sensor group 5 is preferably configured so that the arrival of said wall 2 at said final position determines the passage of the second switch 51b from the respective non-switching condition to the respective switching condition.

The sensor group 5 preferably comprises an actuating element 52.

An example of this actuating element 52 is visible in FIG. 9, where part of an envelope of the sensor group 5 is removed, and in FIGS. 11a-11d.

In this example, said actuating element 52 comprises a slide.

The sensor group 5 is preferably configured so that the actuating element 52 is forced at least to move in translation parallel to a longitudinal axis X.

The sensor group 5 preferably comprises at least one guide, not indicated in the figures, for forcing the actuating element 52 to move in translation parallel to the longitudinal axis X.

Hereinafter, the longitudinal position of the actuating element 52 is understood to mean a component along the longitudinal axis X of the position of the actuating element 52, so that a change in this longitudinal position by the actuating element 52 is obtained by at least one translational movement of the actuating element 52 along the longitudinal axis X.

The closing device 1 comprises a coupling system 58. The coupling system 58 mechanically couples the actuation system 4 and the sensor group 5 to one another.

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The closing device 1, by means at least of the coupling system 58, is configured so that:

when the wall 2 is in its initial position, the actuating element 52 is in a respective initial longitudinal position; and / or when the wall 2 is in the predefined intermediate position, the actuating element 52 is in a respective intermediate longitudinal position; and / or when the wall 2 is in its final position, the actuating element 52 is in a respective final longitudinal position.

If the initial position of wall 2 corresponds to the open position and the final position of wall 2 corresponds to the closed position, and the movement of wall 2 therefore takes place from the open position to the position closing, as the initial longitudinal position of the actuating element 52, one can consider the position in which the actuating element 52 is when the wall 2 is in the open position.

If the initial position of the wall 2 corresponds to the closed position and the final position of the wall 2 corresponds to the open position, and the movement of the wall 2 therefore takes place from the closed position to the position d opening, as the initial longitudinal position of the actuating element 52, one can consider the position in which the actuating element 52 is located when the wall 2 is in the closed position.

The closure device 1, by means at least of the coupling system 58, is preferably configured so that the passage of said wall 2 at said predefined intermediate position of wall 2 determines the passage of said actuating element 52 to the level of said intermediate longitudinal position of the actuating element 52.

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In FIG. 11c, the actuating element 52 is located in said intermediate longitudinal position of the actuating element 52.

The sensor group 5 is preferably configured so that the passage of said actuating element 52 at said intermediate longitudinal position of the actuating element 52 determines, preferably by contact between said actuating element 52 and said first switch 51a, the passage of said first switch 51a from its non-switching condition to its switching condition.

It follows that the passage of said actuating element 52 in said intermediate longitudinal position of the actuating element 52 determines the sending of said first detection signal sr1, by the sensor group 5, to said control unit 6, therefore also sending the first control signal sc1 from the control unit 6 to the actuation system 4, and therefore also the first variation v1 mentioned above of the speed of the wall 2.

In FIG. 11c, the first switch 51a is in the switching condition because, precisely, the actuating element 52 is in the intermediate longitudinal position of the actuating element 52.

The closing device 1, by means at least of the coupling system 58, is preferably configured so that the arrival of said wall 2 in said final position of wall 2 determines the arrival of said actuating element 52 in said final longitudinal position of the actuating element 52.

In FIG. 11d, the actuating element 52 is in said final longitudinal position of the actuating element 52.

The sensor unit 5 is preferably configured so that the arrival of said actuating element 52 in said final longitudinal position of the actuating element 52 determines, preferably by contact between said actuating element 52 and said second

S65238 switch 51b, the passage of said second switch 51b from its non-switching condition to its switching condition.

It follows that the arrival of said actuating element 52 in said final longitudinal position of the actuating element 52 determines the sending of said second detection signal sr2, by the sensor group 5, to said control unit 6, therefore also sending the second control signal sc2 from the control unit 6 to the actuation system 4, and therefore also the aforementioned second variation v2 of the speed of the wall 2.

In FIG. 11d, the second switch 51b is in the switching condition because, precisely, the actuating element 52 is in the final longitudinal position of the actuating element 52.

The sensor group 5 preferably comprises at least one contact element 53.

An example of this contact element 53 is shown in FIGS. 9, 11a-11d, and 12.

In this example, said contact element 53 comprises a body roughly in the form of a wheel.

The sensor group 5 is preferably configured so that the contact element 53 is forced at least to move in translation along said longitudinal axis X.

Hereinafter, the longitudinal position of the contact element 53 is understood to mean a component along the longitudinal axis X of the position of the contact element 53, so that a change in this longitudinal position of the contact element 53 is obtained by at least one translational movement of the contact element 53 along the longitudinal axis X.

The closing device 1, by means at least of the coupling system 58, is configured so that:

S65238 when the wall 2 is in its initial position, the contact element 53 is in a respective initial longitudinal position; and / or when the wall 2 is in the predefined intermediate position, the contact element 53 is in a respective intermediate longitudinal position; and / or when the wall 2 is in its final position, the contact element 53 is in a respective final longitudinal position.

If the initial position of wall 2 corresponds to the open position and the final position of wall 2 corresponds to the closed position, and the movement of wall 2 therefore takes place from the open position to the position closing, as the initial longitudinal position of the contact element 53, one can consider the position in which the contact element 53 is when the wall 2 is in the open position.

If the initial position of the wall 2 corresponds to the closed position and the final position of the wall 2 corresponds to the open position, and the movement of the wall 2 therefore takes place from the closed position to the position d opening, as the initial longitudinal position of the contact element 53, one can consider the position in which the contact element 53 is when the wall 2 is in the closed position.

The closing device 1, by means at least of the coupling system 58, is preferably configured so that the passage of said wall 2 at said predefined intermediate position of wall 2 determines the passage of said contact element 53 at level from said intermediate longitudinal position of the contact element 53.

In FIG. 11c, the contact element 53 is in said intermediate longitudinal position of the contact element 53.

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The sensor group 5 is preferably configured so that the passage of said contact element 53 at said intermediate longitudinal position of the contact element 53 determines, preferably by contact between said contact element 53 and said actuation element 5 52, the passage of said actuating element 52 at the level of said intermediate longitudinal position of the actuating element 52.

The contact element 53 determines the passage of said actuating element 52 at its longitudinal io intermediate position, preferably by exerting a pushing action on the actuating element 52.

The sensor group 5 preferably comprises an elastic component K. The sensor group 5 is preferably configured so that this elastic component K counteracts the pushing action of the contact element 53 on the actuating element 52, this pushing action being that by which the passage of said contact element 53 at said intermediate longitudinal position of contact element 53 determines the passage of said actuating element 52 at said intermediate longitudinal position of element 20 d actuation 52.

In FIG. 11b, the contact element 53 is located just before said intermediate longitudinal position of the contact element 53, and is about to come into contact with the actuating element 52.

As a result, the passage of said contact element 53 at the level of said intermediate longitudinal position of the contact element 53 determines the passage of said first switch 51a from its non-switching condition to its switching condition.

It follows that the passage of said contact element 53 in said intermediate longitudinal position of contact element 53 30 determines the sending of said first detection signal sr1, by the sensor group 5, to said control unit 6, therefore also sending the

S65238 first control signal sc1 from the control unit 6 to the actuation system 4, and therefore also the first variation v1 mentioned above of the speed of the wall 2.

Since said intermediate longitudinal position of the contact element 53, at which said contact element 53 determines the first variation v1 of the speed of the wall 2, and said final longitudinal position of the contact element 53, remain fixed according to the design choices made for the sensor group 5, it follows that one can define the position which will be the predefined intermediate position of the wall 2, at which it is desired that the first variation v1 take place, and, consequently, also the final position of the wall 2, at which it is desired that the second variation v2 takes place, by means of the following adjustment procedure:

bringing the wall 2 into a desired intermediate position which must correspond to the predefined intermediate position, or bringing the wall 2 into a desired final position, which must correspond to the final position of the wall 2;

while the wall 2 takes said desired intermediate position or respectively said desired final position, position the contact element 53 in said intermediate longitudinal position or respectively in said final longitudinal position.

If the closing device 1 is configured so that, if said initial position coincides with said opening position and said final position coincides with said closing position, said rotation around said motorized axis M generates an unwinding of the wall 2 from an axis support A of the wall 2, indicated in figure 1, the adjustment procedure lends itself to be carried out precisely in the case where the initial position of the wall 2 is considered as the open position and the final position of the wall 2 as the closed position, and that the movement of the wall 2 is therefore considered from the open position to the closed position. Indeed, in this case, the desired position is

S65238 typically that in which the wall 2 allows the user access to said contact element 53, insofar as the wall 2 is sufficiently unwound with respect to the support axis A, to allow this user to determine a desired specific longitudinal displacement of the contact element 53 along the longitudinal axis X.

In FIG. 11c, the first switch 51a is in the switching condition because, precisely, the contact element 53 is in the intermediate longitudinal position of the contact element 53, causing the actuating element 52 either in the intermediate longitudinal position of the actuating element 52.

The closing device 1, by means at least of the coupling system 58, is preferably configured so that the arrival of said wall 2 in said final position of wall 2 determines the arrival of said contact element 53 in said position final longitudinal of the contact element 53.

In FIG. 11d, the contact element 53 is in said final longitudinal position of the contact element 53.

The sensor group 5 is preferably configured so that the arrival of said contact element 53 in said final longitudinal position of the contact element 53 determines, preferably by contact between said contact element 53 and said actuating element 52, the arrival of said actuating element 52 in said final longitudinal position of the actuating element 52.

The contact element 53 determines the arrival of said actuating element 52 at its final longitudinal position, preferably by exerting the abovementioned pushing action on the actuating element 52.

It follows that the arrival of said contact element 53 in said final longitudinal position of the contact element 53 determines the passage of said second switch 51b from its non-switching condition to its switching condition.

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It follows that the arrival of said contact element 53 in said final longitudinal position of the contact element 53 determines the sending of said second detection signal sr2, by the sensor group 5, to said control unit 6.

It follows that the passage of said contact element 53 in said final longitudinal position of the contact element 53 determines the sending of said second detection signal sr2, by the sensor group 5, to said control unit 6, therefore also the sending the second control signal sc2 from the control unit 6 to the actuation system 4, and therefore also the aforementioned second variation v2 of the speed of the wall 2.

Since said final longitudinal position of the contact element 53, at which said contact element 53 determines the second variation v2 of the speed of the wall 2, remains fixed according to the design choices made for the sensor group 5, it As a result, by adjusting, before the movement of the wall 2, the initial longitudinal position of the contact element 53 along the longitudinal axis X, it is then possible to adjust the final position of the wall 2 at which the second speed variation of the wall 2.

In FIG. 11d, the second switch 51b is in the switching condition because, precisely, the contact element 53 is in the final longitudinal position of the contact element 53, causing the actuating element 52 either in the final longitudinal position of the actuating element 52.

The sensor group 5 preferably comprises a drive element 54.

An example of this drive element 54 is shown at least in FIGS. 9, 11a-11b, 13 and 14.

In this example, said drive member 54 comprises an elongated body.

This elongated body can be, for example, a tree.

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The sensor unit 5 is preferably configured so that the drive element 54 is constrained at least to rotate about an axis of rotation.

This axis of rotation preferably coincides with said longitudinal axis X.

If the drive element 54 comprises an elongated body, this elongated body is elongated along an elongation axis and this elongated body is arranged so that said elongation axis coincides with said longitudinal axis X.

If this elongated body is a tree, the axis of this tree coincides with said longitudinal axis X.

Hereinafter, the angular position of the drive element 54 is understood to mean a component of the position of the drive element 54 which identifies the orientation of the drive element 54 around the longitudinal axis X , so that a change in this angular position of the drive element 54 is obtained by at least one movement in rotation, or rotation, of the drive element 54 around said longitudinal axis X.

The closing device 1, by means at least of the coupling system 58, is configured so that:

when the wall 2 is in its initial position, the drive element 54 is in a respective initial angular position; and / or when the wall 2 is in the predefined intermediate position, the drive element 54 is in a respective intermediate angular position; and / or when the wall 2 is in its final position, the drive element 54 is in a respective final angular position.

If the initial position of the wall 2 corresponds to the open position and the final position of the wall 2 corresponds to the closed position, and the movement of the wall 2 therefore takes place from the position

S65238 opening in the closed position, as the initial angular position of the drive element 54, we can consider the position in which the drive element 54 is when the wall 2 is in the open position .

If the initial position of the wall 2 corresponds to the closed position and the final position of the wall 2 corresponds to the open position, and the movement of the wall 2 therefore takes place from the closed position to the position d opening, as the initial angular position of the drive element 54, one can consider the position in which the drive element 54 is when the wall 2 is in the closed position.

The closure device 1, by means at least of the coupling system 58, is preferably configured so that the passage of said wall 2 at the level of said predefined intermediate position of wall 2 determines the passage of said drive element 54 to level of said intermediate angular position of the drive element 54.

In FIG. 11c, the drive element, not visible, is in said intermediate angular position of the drive element.

The sensor group 5 is preferably configured so that the passage of said drive element 54 at said intermediate angular position of the drive element 54 determines the passage of said contact element 53 at said intermediate longitudinal position of the contact element 53.

As a result, the passage of said drive element 54 at said intermediate angular position of the drive element 54 determines the passage of said actuating element 52 at said intermediate longitudinal position of the actuating element 52.

S65238

It follows that the passage of said drive element 54 at said intermediate angular position of the drive element 54 determines the passage of said first switch 51a from its non-switching condition to its switching condition.

It follows that the passage of said drive element 54 in said intermediate angular position of the drive element 54 determines the sending of said first detection signal sr1, by the sensor group 5, to said control unit 6, therefore also sending the first control signal sc1 from the control unit 6 to the actuation system 4, and therefore also the first variation v1 mentioned above of the speed of the wall 2.

In FIG. 11c, the first switch 51a is in the switching condition because, precisely, the drive element 54 is in the intermediate angular position, so that the contact element 53 is in the intermediate longitudinal position of the contact element 53, and therefore also that the actuating element is in the intermediate longitudinal position of the actuating element 52.

The closing device 1, by means at least of the coupling system 58, is preferably configured so that the arrival of said wall 2 in said final position of wall 2 determines the arrival of said drive element 54 in said final angular position of the drive element 54.

In FIG. 11d, the drive element 54 is in said final angular position of the drive element 54.

The closing device 1, by means at least of the coupling system 58, is preferably configured so that the arrival of said drive element 54 in said final angular position of the drive element 54 determines the arrival of said contact element in said final longitudinal position of the contact element 53.

S65238

It follows that the arrival of said driving element 54 in said final angular position of the driving element 54 determines the arrival of said actuating element 52 in said final longitudinal position of the actuating element 52.

It follows that the arrival of said drive element 54 in said final angular position of the drive element 54 determines the passage of said second switch 51b from its non-switching condition to its switching condition.

It follows that the arrival of said drive element 54 in said final angular position of the drive element 54 determines the sending of said second detection signal sr2, by the sensor group 5, to said control unit 6, therefore also sending the second control signal sc2 from the control unit 6 to the actuation system 4, and therefore also the aforementioned second variation v2 of the speed of the wall 2.

In FIG. 11d, the second switch 51b is in the switching condition because, precisely, the drive element 54 is in the final angular position, causing the contact element 53 to be in the final longitudinal position of the contact element 53, and therefore also that the actuating element 52 is in the final longitudinal position of the actuating element 52.

The sensor unit 5 preferably comprises a drive system 55 between the drive element 54 and the contact element 53.

The sensor group 5 preferably comprises an anti-rotation system 56, visible in FIGS. 9 and 11a-11d.

The anti-rotation system 56 can take an operational condition, which can be defined as a locking condition, and a non-operational condition, which can be defined as an unlocking condition.

The closing device is configured so that, when the anti-rotation system 56 assumes said locking condition, the system

S65238 drive 55 ensures that a rotation of the drive member 54 about the longitudinal axis X, for example caused by the movement of the wall 2, determines a translation of the drive member contact 53 along the longitudinal axis X.

The closing device is configured so that, when the anti-rotation system 56 assumes said unlocking condition, the drive system 55 ensures that a rotation of the contact element 53 about the longitudinal axis X, for example caused manually by a user, determines a translation of this same contact element 53 along the longitudinal axis X.

This anti-rotation system 56 includes a blocking body 561.

The sensor group 5 is configured so that, when said anti-rotation system 56 assumes said blocking condition, said blocking body 561 is constrained to and / or secured with said contact element 53 to prevent rotation of the contact element 53 around said longitudinal axis X, and cause, in conjunction with the drive system 55, that a rotation of the drive element 54 around the longitudinal axis X corresponds to a translation of the element of contact 53 along said longitudinal axis X.

The sensor group 5 is configured so that, in said unlocking condition of the anti-rotation system 56, said locking body 561 is released from said contact element 53 to allow said rotation of the contact element 53.

In this way, when the anti-rotation system 56 is in its unlocked condition, a user can adjust the longitudinal position of the contact element 53 along the longitudinal axis X, insofar as, by rotating the contact element 53 around the longitudinal axis X, if the anti-rotation system 56 is in its unlocked condition, the translation of the contact element 53 along the drive is determined via the drive system 55 the longitudinal axis X, without

S65238 the drive element 54 must rotate around the longitudinal axis X. Thus, a user can manually adjust the predefined intermediate position or the final position of the wall 2, in particular, in accordance with what has been said above , if the movement is considered from the open position of the wall 2 to the closed position of the wall 2.

Said anti-rotation system 56 includes a projection and a recess. A recess is indicated by the number 562 in Figure 12. The projection is not indicated because it is not clearly visible in the attached figures.

In the blocking condition of the anti-rotation system 56, this projection interferes with said recess 562.

At least one of the components between projection and recess 562 is integral with one of the components between blocking body 561 and contact element 53, while the other of the components between projection and recess 562 is integral with blocking body 561.

In the embodiment of the attached figures, the projection is secured to the blocking body 561 and the recess 562 is secured to the contact element 53.

The sensor group 5 comprises at least one elastic element 57.

The sensor group 5 is configured so that this elastic element 57 tends to maintain the anti-rotation system 56 in said blocking condition and, therefore, tends to keep said blocking body 561 constrained and / or secured with said contact element. 53.

The sensor group 5 is configured so that this elastic element 57 allows a user to switch said anti-rotation system 56 from its blocking condition to its unlocking condition, by acting on the blocking body 561 by counteracting the elastic element 57.

This elastic element 57 can comprise, for example, a spring.

S65238

As can be seen in FIG. 12, the contact element 53 preferably comprises a plurality of recesses 562, obtained by means of a toothing situated around the longitudinal axis X.

In this way, once the user has adjusted the longitudinal position of the contact element 53 along the longitudinal axis X, in order to define the predefined intermediate position of the wall 2 or the final position of this same wall 2, at least one recess 562 of the contact element 53 is always available in order to be able to interfere with the projection of the blocking body 561, in order to return the anti-rotation system 56 to its blocking condition.

The drive system 55 and the anti-rotation system 56 are therefore configured to cooperate so that, in the locking condition of the anti-rotation system 56, a rotation of the drive element 54 around the longitudinal axis X determines a translation of the contact element 53 along said longitudinal axis X.

The sensor group 5, through at least the cooperation between the drive system 55 and the anti-rotation system 56, is configured so that:

when the drive element 54 is in its intermediate angular position, the contact element 53 is in its intermediate longitudinal position; and / or when the drive element 54 is in its final angular position, the contact element 53 is in its final longitudinal position.

The sensor group 5, through at least the drive system 55 and the anti-rotation system 56, is configured so that the passage of said drive element 54 at its intermediate angular position determines the passage of said contact element 53 at the level of said intermediate longitudinal position of the contact element 53.

S65238

The sensor group 5, through at least the drive system 55 and the anti-rotation system 56, is configured so that the arrival of said drive element 54 in its final angular position determines the arrival of said contact element 53 in said final longitudinal position of the contact element 53.

Said drive system 55 preferably comprises a threaded surface 551 secured to the drive element 54 and a threaded surface 552 secured to the contact element 53.

Referring to the example of FIG. 13, the threaded surface 551 extends along at least a first part 541 of the external surface of the drive element 54.

This first part of the external surface of the drive element 54 extends, as shown for example in FIG. 13, between a first section and a second section of said drive element 54. These sections must be considered as being transverse (or orthogonal) to the longitudinal axis X.

Between these first section and second section of the drive element 54, there are the respective sections at which the contact element 53 is positioned when it is respectively in said initial longitudinal position, intermediate longitudinal position and longitudinal position. final mentioned above.

The external surface of the drive element 54 comprises at least a second part 542 on which the threaded surface 551 is not present. The threaded surface 551 of the drive element 54 is visible in FIGS. 9, 11 a, 11 b, 13 and 14.

The threaded surface 552 integral with the contact element 53 is visible in FIG. 12.

Said threaded surface 551 secured to the drive element 54 and threaded surface 552 secured to the contact element 53 are intended to come into reciprocal engagement so that, in cooperation with said anti-rotation system 56, a rotation said element

S65238 drive 54 around said longitudinal axis X determines a translation of said contact element 53 along said longitudinal axis X.

The anti-rotation system 56 is configured to take a locking condition and an unlocking condition.

A possible type of coupling system 58 is visible in Figures 7-10 and at least in part in Figures 11a11b.

The coupling system 58 is preferably configured to couple the drive element 54 and the actuation system 4 directly to each other.

The coupling system 58 is configured so that the passage of said wall 2 at the level of said predefined intermediate position of wall 2 determines the passage of said drive element 54 at its intermediate angular position, and / or so that the arrival of said wall 2 in said final position of wall 2 determines the arrival of said drive element 54 in its final angular position.

The coupling system 58 preferably comprises a first coupling element 581.

The first coupling element is integral with the drive element 54, preferably at least as regards the rotation of the drive element 54 about the longitudinal axis X.

The first coupling element 581 is preferably fixed to and / or integrated in the drive element 54.

An example of this first coupling element 581 is visible in FIGS. 7, 10, 11a and 11b.

This example of the first coupling element 581 comprises a pinion.

The coupling system 58 preferably comprises a second coupling element 582.

S65238

The closing device 1 is configured so that this second coupling element 582 receives at least part of said motor torque generated by the motor group 41.

An example of this second coupling element 582 is visible in FIGS. 7, 8 and 10.

This example of second coupling element 582 comprises a pinion.

The coupling system 58 preferably comprises a third coupling element 583, operatively placed between said first coupling element 581 and second coupling element 582.

An example of this third coupling element 583 is visible in Figures 7-10.

This example of third coupling element 583 comprises a ring gear.

In the embodiment shown, the sensor group 5 includes another first switch 51a ’and another second switch, not shown since, in FIGS. 11a and 11b, it is covered by the other first switch 51a’. In the embodiment shown, the sensor group 5 comprises another contact element 53 ', and preferably another elastic component K'.

The functionalities and / or characteristics described above with reference to the first switch 51a, also in relation to the other components of the sensor group 5, can be considered to be applicable also to the other first switch 51a '.

The functionalities and / or characteristics described above with reference to the second switch 51b, also in relation to the other components of the sensor group 5, can be considered to be applicable also to the other second switch.

The functionalities and / or characteristics described above with reference to the contact element 53, also in relation

with the other components of the sensor group 5, can be considered applicable also to the other contact element 53 '.

The functionalities and / or characteristics described above with reference to the elastic component K, also in relation with the other components of the sensor group 5, can be considered to be applicable also to the other elastic component K '.

The other first switch 51a ', the other second switch, the other contact element 53', and the other elastic component K 'are configured so that the preceding considerations concerning said one or more variations in speed and more generally the movement of the wall 2, can be considered applicable both considering, for the same closing device 1, the initial position as the opening position and the final position as the closing position, as considering, for this same device closing 1, the initial position as the closing position and the final position as the opening position.

Below, a possible embodiment of a method for actuating said wall 2 is described, according to the second aspect of this description.

This method comprises an actuation phase during which a movement of said wall 2 is determined from the initial position of said wall 2 to the final position of said wall 2.

This method comprises at least a first detection phase during which said first detection r1 of a positioning of said wall 2 in said predefined intermediate position of said movable wall 2 is carried out.

This method comprises a first control phase during which at least a first variation v1 of said speed of said movement is determined.

S65238

This first control phase takes place automatically following and / or as a function of said first detection phase.

This method comprises a second detection phase during which said second detection r2 of a positioning of said wall 2 in said final position is carried out.

This method comprises a second control phase during which at least a second variation v2 of said speed is determined.

This second control phase takes place automatically, following said second detection phase.

Returning to the closing device 1, in the embodiment shown, as shown in FIG. 14, a third switch 51c can also be present.

The following considerations are based on a possible embodiment such that the closing device is configured so that the first other switch 51a 'and the second other switch are those whose transition from the non-switching condition to the switching condition determines the first variation v1 and the second variation v2 of the speed of the wall 2, if the initial position of the wall 2 is the closed position and the final position of the wall 2 is the open position.

In this possible embodiment, it is also the other contact element 53 'which determines, by contact with the actuating element 52 which in turn comes into contact with the first other switch 51a' and the second another switch, the first variation v1 and the second variation v2 of the speed of the wall 2, if the initial position of the wall 2 is the closed position and the final position of the wall 2 is the open position.

S65238

In this possible embodiment, it is the other elastic component K ’which counteracts the thrust action exerted by the other contact element 53’ on the actuating element 52.

The sensor group 5 is configured so that the transition from a non-switching condition to a switching condition of the third switch 51c determines the deactivation of the first other switch 51a ’and the second other switch.

The fact that these first other switch 51a ′ and second other switch are deactivated means that their transition from the non-switching condition to the switching condition does not determine any sending of signals to the control unit 6 and therefore does not determine any variation the speed of the wall 2.

Hereinafter, by section of the drive element 54 is meant a cross section (or orthogonal) to the longitudinal axis X.

In particular, the embodiment shown makes it possible to easily adjust the opening position of the wall 2, which is that at which the second variation v2 of the speed of the wall 2 takes place when the movement of the wall 2 takes place the closed position to the open position.

If we consider the case where the initial position of the wall 2 coincides with the closed position and the final position of the wall 2 coincides with the open position, the closing device 1, with reference for example to the Figure 13, is configured so that:

when the other contact element 53 'is in its initial longitudinal position, this same other contact element 53' is located at a section of the drive element 54 which can be called the initial SINIZ section;

when the other contact element 53 'is in its intermediate longitudinal position, this same other contact element 53' is located at a section of the drive element 54 which can be called intermediate section SI NT , so that either

S65238 determined, by contact between the other contact element 53 'and the actuating element 52 and by consequent contact between the actuating element 52 and the other first switch 51a', the first variation v1 of the speed of the wall 2;

when the other contact element 53 ′ is in its final longitudinal position, this same other contact element 53 ′ is located at a section of the drive element 54 which can be called the final section SFIN, so that, by contact between the other contact element 53 ′ and the actuating element 52 and by consequent contact between the actuating element 52 and the other second switch, the second variation v2 the speed of the wall 2.

The drive system 55 is configured so that the first part 541 of the drive element 54, on which the threaded surface 551 is located, includes said initial section SINIZ, intermediate section SINT, and final section SFIN.

The drive system 55 is configured so that the second part 542 of the drive member 54, on which the threaded surface 551 is not located, is positioned, along the longitudinal axis X and in the direction from the initial SINIZ section to the final SFIN section, beyond the final SFIN section.

In this way, to manually adjust the opening position of the wall 2, at which, if we consider the movement from the closed position to the open position, the second variation v2 of the speed of the wall 2 takes place , a user can place, while the wall 2 is for example in the closed position, the other contact element 53 ′ on the second part 542 of the drive element 54, so that this same other contact element 53 ', while the drive element 54 rotates about the longitudinal axis X due to the movement of the wall 2 from the closed position to the open position, does not translate along the longitudinal axis X.

S65238

At this stage, the same user can cause the movement of the wall 2 from the closed position to the open position, which must however still be adjusted, manually or by means of the motor group 41 of the actuation system 4.

When the user visually observes that the desired opening position has been obtained, he again, again manually or by means of the motor of the actuation system 4, the movement of the wall

2.

The sensor group 5 is configured so that, immediately after this reversal of the movement of the wall 2, the other elastic element K 'acts to re-couple the other contact element 53' on the threaded surface 551, so that the wall 2 open position is thus adjusted "automatically" and not by attempts.

In fact, the user could very difficult access the sensor group 5, to manually adjust the position of the other contact element 53 'along the longitudinal axis X, when the wall 2 is in the open position desired, since the wall 2 is wound around its winding axis A and covers the sensor group

5.

To carry out the operations which have just been described, it is however advisable to place the third switch 51c in its switching condition beforehand, so that the other first switch 51a 'and the other second switch are deactivated, insofar as where, the other contact element 53 'having to be moved on the second part 542 of the drive element 54, this same drive element 54 could thus place the other first switch and the other second switch in the switching condition, which should be avoided during the above operations for adjusting the open position.

On the other hand, when the wall 2 is in the desired closed position, the user can more easily access the group

S65238 EN HA-P sensor 5 in order to be able to adjust the position of the contact element 53 along the longitudinal axis.

The considerations that we have just presented can also apply to another embodiment of the closing device 1 according to which the first switch 51a, the second switch 51b, the contact element 53 and the elastic component K are operational when the movement is from the closed position to the open position.

The closure device 1 can be applied to access sections of any type.

In particular, the closing device 1 could give rise to a "motorized curtain" which can be, for example, of the industrial type.

Note that, in a possible embodiment of the closing device 1, the signals generated by the first switch 51a or by the first other switch 51a ', which are sent to the control unit 6 to obtain the decelerations of the wall 2 respectively during a movement from the open position to the closed position and vice versa, can also be used for managing a safety edge of the "touch / no touch" type.

When the wall 2 is closing, the signal from the switch 51a or 51a ’will determine the change from the safety edge of" Touch / No Touch "to the only" Touch "function.

In other words, preferably, when the wall 2 is closing, the signal from the switch 51a or 51a 'will determine the passage of the safety edge in the "Touch" function mode (where it will be active to detect d '' possible contact with the safety edge).

Claims (3)

1. Closing device (1) of an access section (Z) to a space comprising: - A movable wall (2) intended to be subjected to a movement from an initial position of said wall to a final position of said wall, said initial position and final position possibly being, respectively, an open position of said section d 'access (Z) and a closed position of said access section (Z), or vice versa; - a control system (3) which includes: an actuation system (4) configured to determine said movement so that said wall takes, during said movement, a plurality of intermediate positions between said initial position and end position, said actuation system (4) being configured to determining, during said movement, at least a first variation (v1) of at least one speed of said movement; a sensor group (5) configured to perform, during said movement, at least a first detection (r1) of a positioning of said wall in a predefined intermediate position of said wall (2); a control unit (6) in communication with said actuation system (4) and said sensor group (5); wherein said control system (3), through at least said control unit (6), is configured so that this first variation (v1) takes place following said first detection (r1); wherein said first variation (v1) takes place from a first value to a second value, said first value being greater than said second value; wherein said sensor group (5) is configured to send at least one first detection signal (sr1) to said control unit (6), following said first detection (r1); S65238 where said control unit (6) is configured to send at least a first control signal (sc1) to said actuation system (4), after reception, by this same control unit ( 6), of said first detection signal (sr1); said actuation system (4) being configured to determine said first variation (v1) of said speed of movement of the wall (2), following reception by this same actuation system (4) of said first signal command (sc1); wherein said sensor group (5) comprises at least a first switch (51 a); said first switch (51a) being able to take a respective non-switching condition and a respective switching condition; wherein said closing device (1) is configured so that the passage of said first switch (51a) from the respective non-switching condition to the respective switching condition determines the sending of said first detection signal (sr1), by the group sensor (5), towards said control unit (6); said closing device (1) being configured so that the passage of said wall (2) at said predefined intermediate position determines the passage of said first switch (51a) from the respective non-switching condition to the respective switching condition: wherein said sensor group (5) comprises an actuating element (52) constrained at least to move in translation parallel to a longitudinal axis (X); said closure device (1) being configured so that the passage of said wall (2) at said predefined intermediate position determines the passage of said actuating element (52) at an intermediate longitudinal position of element d 'actuation (52); S65238 where said sensor group (5) is configured so that the passage of said actuating element (52) at said intermediate longitudinal position of the actuating element (52) determines, by contact between said actuating element ( 52) and said first switch (51a), passing said first switch (51a) from the respective non-switching condition to the respective switching condition; wherein said sensor group (5) comprises at least one contact element (53) constrained at least to move in translation along said longitudinal axis (X); said closure device (1) being configured so that the passage of said wall (2) at said predefined intermediate position of the wall (2) determines the passage of said contact element (53) at an intermediate longitudinal position the contact element (53); wherein said sensor group (5) is configured so that the passage of said contact element (53) at said intermediate longitudinal position of the contact element (53) determines, by contact between said contact element (53) and said actuator (52), passing said actuator (52) at said intermediate longitudinal position of the actuator (52); wherein said sensor group (5) comprises a drive element (54) constrained at least to rotate about said longitudinal axis (X); said closure device (1) being configured so that the passage of said wall (2) at said predefined intermediate position of the wall (2) determines the passage of said drive element (54) at an angular position intermediate of the drive element (54); wherein said sensor group (5) is configured so that the passage of said drive element (54) at said position S65238 intermediate angle of the drive element (54) determines the passage of said contact element (53) at said intermediate longitudinal position of the contact element (53); wherein said sensor group (5) comprises a drive system (55) between drive element (54) and contact element (53); said drive system (55) comprising a threaded surface (551) integral with the drive element (54) and a threaded surface (552) integral with the contact element (53); said threaded surface (551) integral with the drive element (54) and threaded surface (552) integral with the contact element (53) being intended to come into reciprocal engagement; characterized in that: said sensor group (5) comprises an anti-rotation system (56) configured to take a locking condition in which it prevents the rotation of the contact element (53) around said longitudinal axis (X) and an unlocking condition in which it allows rotation of the contact element (53) about said longitudinal axis (X); said anti-rotation system (56) comprises a blocking body (561) which, in said blocking condition of the anti-rotation system (56), is secured to said contact element (53) to prevent said rotation of the contact element ( 53) and, in said unlocking condition of the anti-rotation system (56), is released from said contact element (53) to allow said rotation of the contact element (53); wherein said sensor group (5) comprises at least one spring (57) which tends to keep the anti-rotation system (56) in said blocking condition; said anti-rotation system (56) and drive system (55) being configured so that a rotation of said drive element (54) about said longitudinal axis (X) determines a translation of said contact element (53 ) along said longitudinal axis (X). 2. A closure device (1) according to claim 1, wherein said actuation system (4), for determining said movement of the wall (2), comprises a motor group (41) configured to generate an output motor torque intended determining a rotation about a motorized axis (M); wherein the sensor unit (5) comprises a coupling system (58) configured to couple the drive element (54) and the actuation system (4); said coupling system (58) comprising a first coupling element (581) integral with the drive element (54) and a second coupling element (582) intended to receive at least part of said motor torque; said coupling system (58) being configured so that the passage of said wall (2) at said predefined intermediate position of the wall (2) determines the passage of said drive element (54) at said intermediate angular position of the drive element (54). 3. Closure device (1) according to claim 1 or 2, wherein said actuation system (4) is configured to determine, during said movement, at least a second variation (v2) of said speed; wherein said sensor group (5) is configured to perform, during said movement, at least a second detection (r2) of a positioning of said wall (2) in said final position; wherein said control system (3) is configured so that said second variation (v2) takes place following said second detection (r2).