ES2684484T3 - Closing element with a device to control the movement of the closing element - Google Patents

Abstract

Closing element equipped with a movable closing element whose spatial movement includes a rotation, composed of a tilting door, and solidly fixed to the leaf of the tilting door, is an electronic accelerometer (3,4), whose signals identify absolutely each angular position of the door leaf that allows the precise position of the leaf to be identified when moving, characterized by the fact that the closing element is composed of a tilting door with a motor for moving the leaf and a device for controlling the movement of the blade, composed of an electronic accelerometer (3,4), in which the electronic accelerometer (3,4) finds the start and stop positions of the closing element (1), carrying out the function of the usual stops.

Description

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

Closing element with a device to control the movement of the closing element.

It is well known that in the field of automated movement of closing elements, the moving parts of said elements must be controlled during their travel and, in particular, at the ends of said travel.

Examples of said automated movement of closing elements are shown in US2005 / 253710 and in US2005 / 168010.

Currently, the simplest control devices only provide limit stops at the endpoints of the moving element.

The improved automation allows the use, possibly in combination with said limit stops, of encoders related to the number of revolutions that the motor generates for the movement.

There are other control devices whose control signal is still related to a motor speed function.

Currently, therefore, existing control devices directly recognize the position of the element during its travel, especially if there is no power supply - often when there is no backup battery - or after disconnection of the automation with or without subsequent manual movement.

There are many drawbacks in the cases described above: the aforementioned control devices do not recognize the position of the element when it is in motion, and therefore the movement control is not possible since references are missing, in this case at the end of its path, that They can slow your speed when you approach the limit stop.

In the event that there is no power, the practice adopted normally involves carrying out uncontrolled restoration movements, difficult to do in compliance with current safety regulations, and in any case dangerous to the user (unless the danger of such situation). On the other hand, in case of manual unlocking of automation, there is currently no other solution than to tell the user to wait until the cycles are restored.

The use of the limit stops and / or encoders also has the general disadvantage of their possible failure; specifically, the stops can move without the control system recognizing this change of position.

Another drawback, in addition to the possible damage to the encoder, is the high cost of the installation with the perforation of the housings from where the shaft leaves, and the high cost of the wiring for the electrical connections that leave said encoder.

The purpose of this patent is to overcome the above-mentioned drawbacks, and this is achieved, according to claim 1, with the use of an electronic accelerometer that is commercially available, even if it is used for other purposes.

Said accelerometer provides continuous analog and digital signals based on the angular position of said element that incorporates the electrical components that convert it into an electronic accelerometer. According to claim 1, the moving body is a

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

overhead door By solidly fixing said element to the tilting door, the different rotational positions assumed by the door leaf cause variations in the angular position of said leaf.

The advantage of this device is that it can be physically integrated into the electronic system to control the movement when fixed to the door leaf.

The signals emitted by the accelerometer that accurately identifies said angular position allow to know the precise position of the blade.

The signals emitted by the electronic accelerometer, duly transduced corresponding each of its angular positions, to the other movement parameters, become an integral part of the automated control, so that, for example, the speed of the moving element can be controlled, especially at the end of its route (excluding the classic stops) without any blow.

The electronic accelerometer used can be of a simpler linear type, in which the emitted signals (voltage) refer to two Cartesian axes x and y, and whose size for each angular position are equal to the values relative to the trigonometric sine and cosine.

In the present case of a tilting door, the element that incorporates the accelerometer, it is more practical to place it on the surface of the door leaf, so that the x-axis is parallel with said surface. Under these conditions, the x-axis, with the door leaf closed, coincides with the vertical one, and the emitted signal has the maximum value since it is related to the cosine.

Since the variability of the signal emitted by the x-axis is proportional to the trigonometric sine of the angle between the position of the blade and the fixed part, it may be advantageous to use a fastener that maintains the inclination between the plane of the accelerometer and that of the blade : For reasons of simplicity, reference will be made to the positions represented in the drawings of the attached sheets.

Since the signals emitted by the electronic accelerometer are relative to their angular position absolutely, they remain so until the power is reconnected, provided there is any interruption in the power supply.

With the use of the electronic accelerometer, it is possible to know all the positions of the blade from its completely closed (vertical) initial position to a completely open (horizontal) position, and vice versa, and this happens because the electronic accelerometer emits signals for the entire field for its angular variations, ranging from 0 to 90 degrees, with its operations related to cosine (1-0).

As stated above, when there is no voltage or after switching off the automation, whatever the position of the blade, when the power returns and the automation resumes, because the signal emitted by the electronic accelerometer for each angular position is transduced having taking into account the other movement parameters, such as the current absorbed by the motors, the automation is restarted from the position in which it was interrupted, as if there had been no power cut, or restarted from the position in which the blade was positioned with a manual movement, as if there had been no disconnection of the automation (and therefore no interruption of the power supply).

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

Another advantage connected with the use of the electronic accelerometer is the characteristics that these devices still have today, in terms of operating temperature and dynamic response.

We must remember that what has been said for the swinging door leaf, which rotates moving through the fixed frame guides, is equally valid for shutters with bars subject only to rotation (both vertically and horizontally), and for any other element whose movement also depends indirectly on a rotational component.

It should also be noted that the position signal obtained by the device can be used for complete control of movement, speed, slowdown, etc., performing all the functions currently performed by an encoder and stops.

What has been described is understood by examining the attached drawings.

Fig. 1 schematically represents the leaf of a tilting door profile view in closed position with an applied element, which includes the electronic structure relative to an accelerometer that can emit signals as a function of its angular position.

Fig. 1 ’shows the element related to the electronic accelerometer firmly attached to the blade, highlighting the signal unit as a projection of the component experiencing gravity g on the reference axis.

Fig. 2 is a representation corresponding to fig. 1, in which the leaf of the tilting door is in an intermediate position between the closed and open position, and establishes an angle with respect to the vertical (different from the value of 0 degrees), which is the same angle established by the element attached to it that contains the electronic accelerometer.

Fig. 2 ’also highlights the element related to the electronic accelerometer solidly fixed to the blade, which shows that the projection of the component experiencing gravity g on the reference axis has changed (in decrease) compared to fig. one'.

Fig. 3 is a representation corresponding to fig. 1 in which the leaf of the tilting door is almost in an open horizontal position, and establishes an angle with respect to the vertical (approximately 90 degrees), which is the same angle established by the element that has the electronic accelerometer fixed to it.

Fig. 3 ’also highlights here the element related to the electronic accelerometer solidly fixed to the blade, which shows that the projection of the component experiencing gravity g on the reference axis has changed (towards 0) compared to Fig. 1’.

According to the drawings shown in the diagrams, the pivot door 1 is applied to the leaf 1, which rotates using its pivots 2 along the guides of the fixed frame, identified in the diagram with its vertical plane KK, the element 3 incorporating the electronic accelerometer with the two x and y axes.

The element 3 is installed in such a way that when the sheet 1 is closed, the x-axis is parallel to the vertical position of the sheet.

The signals emitted by the electronic accelerometer relative to the x axis are determined according to the projection that the inertial part 4 (symbolically represented with a part of the rod as a pendulum), with respect to the gravity "g", makes on the axis x during the variation of the angular position assumed by element 3. Because element 3 is

solidly connected to sheet 1, each signal emitted by the electronic accelerometer corresponding to each of its angular positions, absolutely identifies the position assumed by sheet 1 during its movement.

5 In the case of the representations of the various diagrams, because the projections of the inertial part 4 are on the x-axis, which corresponds to the trigonometric cosine, the value of the closed (vertical) sheet 1 signal will be 1 and with the leaf open (horizontal) it will be 0.

Starting from what has just been described, we can understand the enormous importance of the invention of this patent, which revolutionizes the current method to detect the positions assumed by the movable part of an automated frame during its movements (in this case the tilting sheet of a door), so that the electronic accelerometer, which has been created to depend on the movements of the movable part, emits signals corresponding to the different angular positions that are directly related to the angular positions (and therefore with the assumed positions) of said tilting door leaf.

Claims (6)

5 10 fifteen twenty 25 30 35 40 1. Closing element equipped with a movable closing element whose spatial movement includes a rotation, composed of a tilting door, and solidly fixed to the leaf of the tilting door, is an electronic accelerometer (3,4), whose signals identify from absolute shape each angular position of the door leaf that allows the precise position of the leaf to be identified when moving, characterized by the fact that the closing element is composed of a tilting door with a motor to move the leaf and of a device for controlling the movement of the blade, composed of an electronic accelerometer (3,4), in which the electronic accelerometer (3,4) finds the start and stop positions of the closing element (1), carrying out the function of the usual stops. 2. Closing element equipped with a movable closing element whose spatial movement includes a rotation according to claim 1, characterized in that the signal of the electronic accelerometer (3,4) depends on the values of the currents absorbed by the motor when the movable closing element (1) is moved. 3. Closing element equipped with a movable closing element whose spatial movement includes a rotation according to one or more of the preceding claims, characterized in that the electronic accelerometer (3,4) is an electronic accelerometer with a sensor linear gravimetric inertial (4), with at least one axis (x,) that emits analog and / or digital signals. 4. Closing element equipped with a movable closing element whose spatial movement includes a rotation according to one or more of the preceding claims, characterized in that said electronic accelerometer (3,4) is solidly fixed to the sheet of the door (1), with a corresponding correspondence of the angular positions assumed by the element (3) that incorporates the electronic accelerometer (4) and the positions assumed by the leaf (1) throughout its movement including the extreme zones. 5. Closing element equipped with a movable closing element whose spatial movement includes a rotation according to one or more of the preceding claims, characterized in that said electronic accelerometer (3,4) gives the exact position of the element of movable closure (1) regardless of the situation prior to the indications of its signals, specifically in starting the movement again after a manual interruption, or an interruption due to lack of power to move the system of the closure element (1) . 6. Closing element equipped with a movable closing element whose spatial movement includes a rotation according to one or more of the preceding claims, characterized in that the electronic accelerometer (3,4) is positioned such that the axis x is not parallel to the position of the sheet in such a way that it emits signals with the highest values when the positions assumed by the sheet are the most important.