DE29513905U1 - Electric actuator for the sash of windows, doors or the like. - Google Patents

Description

Applicant

GEZE GmbH & Co.
Siemensstrasse 21-29
71229 Leonberg

Our reference: G 1446

Electrical operating device for the wings of windows, doors or the like

The invention relates to an electrical actuating device for the wings of windows, doors or the like, with an electromechanical drive, with an actuating button or a corresponding device and with a self-holding module, which is connected between the actuating button and the drive and interacts electrically with them via connecting lines and has several relays, each with several changeover contacts.

Such devices with a self-holding module are used, for example, for the electrically controlled opening and closing of skylight sashes. By pressing a button to open or close the sash on the actuation button, the self-holding module is activated via a control line and thus goes into the active position. In this position, the control is continued to be transmitted to the drive even after the actuation button is released and leads to the opening or closing of the sash until it reaches its maximum sash position. This of course assumes that the drive is not stopped beforehand by pressing another corresponding button. In general, when the maximum sash position is reached, the load is switched off internally in the drive.

A distinction is made between internal self-holding modules integrated in the drive and external self-holding modules, which can advantageously also control several drives connected in parallel at the same time. The external self-holding modules to which the invention refers are socketed versions with two relays and four changeover contacts each. The disadvantage of these is that they have to be installed in surface-mounted boxes due to their size.

Another disadvantage is that the high number of changeover contacts per relay means that more wiring is required on the self-holding module. This not only requires a lot of work during installation, but also carries the risk of wiring errors.

The aim of the invention is to further develop the device so that the self-holding module can be installed in the cramped space of a flush-mounted box. The wiring effort should also be minimized.

The invention solves this problem by implementing the self-holding function of the module with two relays, preferably each with two switchover contacts, through a suitable combination of the relays and the changeover contacts. The smaller number of switchover contacts reduces the size of the relays used, the number of terminal contacts required for wiring and, accordingly, the wiring effort. The size of the self-holding module is thereby significantly reduced.

In the preferred version, these two relays are soldered directly onto a circuit board on which the internal electrical connections are made in the form of pre-printed conductor tracks. By using the circuit board, the socket is no longer required, which saves further space and

Wiring is limited to connections to the actuation button and the drive.

The invention is explained in more detail below using an embodiment with reference to the drawing. The drawing shows:

Figure 1 Circuit diagram of an embodiment according to the invention with an external self-holding module;

Figure 2 schematic representation of the self-holding module in Figure 1 in top view;

Figure 3 internal circuit diagram of the self-holding module in Figure 1 in the idle state;

Figure 4 Circuit diagram corresponding to Figure 1 of a modified embodiment with two actuating buttons and two electromechanical drives.

In the embodiment shown in Figure 1, the invention is implemented in connection with an external self-holding module 2, which has two relays 41 and 42, each with two changeover contacts 41a, 41b and 42a, 42b (Fig. 3). Also shown is an actuating button 1 with three actuating buttons 12, 13, 14 for the drive functions "OPEN", "STOP", and "CLOSE" as well as an electromechanical drive 3 for the actuation of a wing (not shown) of a window, a door or the like.

Of course, the invention can also be implemented with an actuation button 1 other than the one shown. Furthermore, when using the self-holding module 2, a series connection of several actuation buttons is possible.

A single push button is possible or a parallel control of more than one drive 3 (Fig. 4).

Of the electrical connections, the protective conductor PE is connected directly to the drive. The neutral conductor N is connected to the self-holding module 2 in the terminal block 21 and then passed on to the drive 3 via the terminal block 22. The phase line L1 is first fed to the actuation button 1 via the terminal block 11 and from there to the self-holding module 2 via the terminal block 21. The two control lines OPEN and CLOSE are used to control the self-holding module 2 and the drive 3, which are led from the actuation button 1 to the self-holding module 2 and from there to the drive 3.

When the "OPEN" button 12 or "CLOSE" button 14 of the actuation button 1 is pressed, the phase is also on the OPEN or CLOSE control line in addition to the phase line L1. This control causes the self-holding module 2 to change to the active position, in which the corresponding relay 41 or 42 is activated and the associated changeover contacts 41a, 41b or 42a, 42b (Fig. 3) assume their active position. In this position, the control is still forwarded to the drive 3 even after the button 12, 14 is released and leads to the opening or closing of the wing. If the wing has reached its maximum open or closed position, the drive 3 experiences an internal load shutdown if the self-holding module 2 remains in the active position, which is not shown in the figures. This means that the self-holding module 2 also retains its active position beyond the load shutdown of drive 3 until a new control is carried out via the actuating button 1.

When the "STOP" button 1 3 is pressed, the phase line L1 leading to the self-holding module is interrupted and the changeover contacts 41a, 41b, or 42a, 42b return to the rest position shown in Figure 3. Accordingly,

The drive control is adjusted accordingly and the flight stops in the current position.

In the self-holding module shown in plan view in Figure 2, it can be seen that the two relays 41, 42 are soldered next to each other in the middle area of a circuit board 23 with an essentially rectangular base. Two terminal blocks 21 and 22 with four connection options on the input side 21a to 21d and three connection options on the output side 22a, 22b, 22c leading to the drive 3 are soldered opposite each other on the edge area of the circuit board 23. All internal connections between the relays 41, 42 and the terminal blocks 21, 22 are designed as conductor tracks on the circuit board 23. To protect and insulate the conductor tracks, the circuit diagram of which is explained in more detail in Figure 3, the underside of the circuit board is cast with hardened plastic compound.

This very compact arrangement reduces the space requirement to around a third of conventional self-holding modules, which allows use in flush-mounted boxes. In addition, the wiring effort when installing the self-holding module 2 is limited to seven connections in the two terminal blocks 21, 22, compared to fourteen connections in conventional designs.

Figure 3 shows the circuit diagram of the self-holding module 2 according to the invention in the rest position of the two relays 41, 42. The four input-side connections 21a to 21d of the terminal block 21 are occupied by the phase lines L1, the two control lines OPEN, CLOSE and the neutral conductor N. On the output side leading to the drive, the control lines OPEN, CLOSE and the neutral conductor N are located in the three connections 22a to 22c of the terminal block 22. The changeover contacts 41a and 41b of the relay 41 and 42a and 42b of the relay 42 are also shown.

The neutral conductor N and the OPEN and CLOSE control lines are routed directly between the series terminals 21 and 22. The CLOSE control line, which causes the wing to close, is routed via changeover contact 41b and is released by this when relay 41 is activated. Relay 41 is located between neutral conductor N and one OPEN control line and relay 42 is located before contact 41b between neutral conductor N and the other CLOSED control line. The phase line L1 leads from terminal 21 to changeover contact 41a and branches there into two branches L1a, L1b, of which the upper L1a leads to one OPEN control line via contact 42a and the lower L1b leads to the other CLOSED control line via contact 42b.

In the rest position of relay 41 shown with the changeover contacts 41a, 41b, the phase line L1 is connected to the lower branch L1b in contact 41a and in the active position not shown to the upper branch L1a. In the rest position of relay 42, the upper branch L1a is connected to the one control line OPEN via contact 42a and the lower branch L1b is released in contact 42b. Conversely, in the active position of relay 42, the branch L1a is released and the branch L1b is connected to the other control line CLOSED.

This results in the following switching behavior:

a) By pressing the "OPEN" button 12, the self-holding module 2 is controlled via the OPEN control line and relay 41 is activated. By changing to the active position, contact 41b releases the CLOSE control line leading to the drive and contact 41a connects the phase line L1 to the upper branch L1a. If relay 42 was previously in the active position, this switching interrupts its supply and the associated contacts 42a, 42b change to the rest position. This ensures that the upper branch L1a is switched through to the OPEN control line via contact 42a. Relay 41, which thus remains activated, and drive 3 continue to be supplied via this path even after the "OPEN" button 12 is released. The drive runs

therefore in the "OPEN" direction until the wing is completely opened or one of the other buttons 13, 14 is pressed.

b) When the "STOP" button 13 is pressed, the phase line L1 is interrupted, the relays 41, 42 are no longer supplied and all changeover contacts in the active position return to the rest position shown in Figure 3. This also interrupts the power supply to drive 3 and it stops in the current leaf position.

c) By pressing the "Close" button 14, the self-holding module 2 is controlled via the control line CLOSED and relay 42 is activated. By switching to the active position, the upper branch L1a leading from the phase line L1 to one control line OPEN is released via contact 42a and the lower branch L1b is switched through to the other control line CLOSED via contact 42b. If contact 41a was previously in the active position, this switching interrupts the supply to relay 41 and it, like contact 41b, switches to the rest position. This ensures that the phase line L1 is on the lower branch L1b and the control line CLOSED is switched through to drive 3 in contact 41b. Relay 42, which thus remains activated, and drive 3 continue to be supplied via this path even after the "Close" button 14 is released. The drive therefore runs in the "CLOSE" direction until the wing is completely closed or one of the other buttons 12, 13 is pressed.

d) If several buttons 12, 13, 14 are pressed at the same time, the "STOP" button 13 always has the highest priority and the "CLOSE" button 14 has the lowest. Switching contact 41b ensures that the drive 3 can never be controlled via both OPEN and CLOSE control lines at the same time.

The functions of the self-holding module are thus implemented with two very compact relays 41, 42 with a total of four changeover contacts 41a, 41b, 42a, 42b.

Claims (3)

8th
Expectations Electrical actuating device for the wings of windows, doors or the like, with an electromechanical drive (3), with an actuating button (1) or a corresponding device and with a self-holding module (2) which is connected between the actuating button (1) and the drive (3) and interacts electrically with them via connecting lines (N, L1, OPEN, CLOSE) and has several relays, each with several changeover contacts, characterized, that two relays (41, 42) are used in the self-holding module (2), whereby one relay (41) has only one or two or three changeover contacts (41a _r 41b) and the other relay (42) has only one or two or three changeover contacts (42a, 42b). 2. Device according to claim 1, characterized in that, that the phase line (L1) in the self-holding module (2) opens into a changeover contact (41a) of a first relay (41) and branches there into two branches (L1a, L1b), wherein it is preferably provided that of the two branches (L1a, L1b) one (L1a) is switched through via the first changeover contact (42a) of the second relay (42) to one control line (OPEN) and the other (L1b) is switched through via the second changeover contact (42b) of the same relay (42) to the other control line (CLOSE). 3. Device according to claim 1 or 2, characterized in that that the self-holding module (2) has a circuit board (23) with integrated electrical connections, onto which both relays (41, 42) are soldered.