EP0471697A1

EP0471697A1 - Automatic sliding door

Info

Publication number: EP0471697A1
Application number: EP90906859A
Authority: EP
Inventors: Christian Hein
Original assignee: Dorma Deutschland GmbH
Current assignee: Dorma Deutschland GmbH
Priority date: 1989-05-10
Filing date: 1990-05-08
Publication date: 1992-02-26
Also published as: HUT58855A; AU641650B2; HU903326D0; AU5533990A; US5247763A; JPH04501445A; WO1990013723A1; ES2028770T1

Abstract

L'invention décrit une porte coulissante automatique comportant au moins un battant (1, 1') doté d'une commande auxiliaire (14). Lors de la fermeture normale de la porte, de l'énergie est amenée à la commande auxiliaire et y est emmagasinée. En cas de panne de courant (panne de secteur) et/ou interruption simultanée de la commande normale, cette énergie devient effective de sorte que la porte s'ouvre. De préférence, cette commande auxiliaire (14) est un élément en caoutchouc qui est tendu lorsque la porte est fermée, et qui, en cas de panne de courant et donc ouverture simultanée d'un accouplement (20) entre le moteur de commande (9, 22) et le dispositif d'actionnement (19) de la porte coulissante, se contracte et ouvre ainsi la porte.The invention describes an automatic sliding door comprising at least one leaf (1, 1 ') provided with an auxiliary control (14). When the door is closed normally, energy is supplied to the auxiliary control and stored there. In the event of a power failure (mains failure) and / or simultaneous interruption of the normal control, this energy becomes effective so that the door opens. Preferably, this auxiliary control (14) is a rubber element which is tensioned when the door is closed, and which, in the event of a power failure and therefore simultaneous opening of a coupling (20) between the control motor (9 , 22) and the actuating device (19) of the sliding door, contracts and thus opens the door.

Description

Automatic sliding door

Description

Due to national regulations, doors have to be constructed in practically all countries of the world, in particular in public buildings such as train stations, department stores, conference rooms or the like, in such a way that they are used without assistance by both wheelchair users, people with prams and the disabled can. On the other hand, the doors must also open quickly, safely and easily in the event of danger, to provide the people in the rooms with an escape route.

In most cases, only automatically operating sliding doors come into question for the fulfillment of the first requirement, namely to make doors accessible for disabled and wheelchair users. The previous sliding doors are not suitable for opening escape and rescue routes at the same time.

From FR-A-1.374-224 an automatic, two-leaf sliding door is known, in particular for escape and rescue routes, the two leaves of which each have a pivotable wing part which is articulated to a non-pivotable wing part and is held in a snap-in manner thereon, that by a push against the center of the sliding door from the inside the pivotable wing parts can be opened a to the outside.

A similar sliding door, in which the division takes place approximately in the middle, is disclosed in CH-A-508 122. The division of a double-leaf door on its center is known from US Pat. No. 3,811,489. These measures achieve a limited release of the escape route in the event of danger, but this is only an inadequate measure.

DE-PS 28 53 772 shows a locking device for a sliding gate, in which the drive of the gate is connected by an electromagnetic controllable rotary coupling and a friction clutch lying in series with it. If the rotary coupling is separated from the friction clutch with the door leaf open, the torque resulting from a working memory is sufficient to close the door leaf. Such locking devices are used in particular in fire protection doors. From the European patent EP-A-163942 a two-winged automatic sliding door is known, the two wings of which each have a pivotable wing, which is articulated on a displaceable but not pivotable wing part and is held on the latch in such a way that pressure against the center the sliding door from the inside open the swiveling wing parts to the outside and at the same time return the non-swiveling wing parts.

In this embodiment, too, pressure must first be exerted from the inside against the pivotable wing parts so that they open. In the event of a power failure, the other two hinged door parts do not move back and the open passage i may be so small that the people who panic are injured and even put to death.

The invention is therefore based on the object of creating an automatic slide that opens automatically in the event of a voltage failure in the power supply, regardless of the general condition, i.e. always when the power supply fails, whether in a dangerous situation or not, the door opens and thus a free passage is guaranteed. At the same time, the drive unit should be as inexpensive as possible.

This object is achieved according to the invention by an auxiliary drive, the normal closing of the door is supplied with energy, which is stored therein and which takes effect in the event of a power failure and thus simultaneous uncoupling of the standard drive with the sliding door by opening the door. This prevents the entire drive unit from being duplicated.

To interrupt or decouple the normal drive of the sliding door i between the drive and the door leaf or doors preferably an electromagnetic clutch is provided which separates the drive from the door leaf in the event of a power failure. This is also achieved if an error or interruption occurs in the emergency power supply.

The auxiliary drive takes place via any suitable storage device or device, such as hydraulic or pneumatic pressure accumulators or spring devices. Preferably, however, in the sense of the invention, the auxiliary drive is formed by an elastic rubber element which is connected on the one hand to the door fighter and on the other hand to a door leaf. The elastic rubber element can also be replaced by a suitable other elastic element (eg plastic). To obtain the required storage capacity, the rubber element is guided over a deflection roller, so that there is a length that ensures the required energy storage for opening the door. In addition, a corresponding adjustment can be made by choosing the strength and elasticity of the rubber element.

Because e.g. in the case of double-leaf sliding doors, the synchronism of the leaves is carried out by coupling the drive means common to the two leaves, the rubber element only needs to be connected to one leaf or to the drive means at a suitable point. As a drive means e.g. a timing belt can be used. The drive motor with gearbox drives the drive wheel in the form of a toothed disc via an electromagnetic clutch. The drive is analogous for single-leaf doors. If the power supply inside or outside of the power supply is interrupted for any reason, for example in connection with alarm devices, such as fire alarms, which can be done by switching the devices appropriately, or if the power supply fails at all, the electromagnetic clutch is de-energized, so that the drive from the engine via the transmission to the drive toothed pulley for the toothed belt is interrupted, whereby the blocking of the wings by the transmission is eliminated, so that the tensioned rubber element si now contracts and the now free-running, not blocked by the transmission of the drive motor wings and pulls up so that the entire traffic is released.

It is therefore not necessary for people to physically touch the door leaf in order for the sliding door to open.

This necessary measure ensures that no complex construction is necessary for a double drive unit. The auxiliary drive works purely mechanically and represents an inexpensive alternative to the double drive unit. The invention will now be explained in more detail with the aid of a schematic exemplary embodiment which is shown in the drawing.

In the drawing:

Fig. 1: a schematic, perspective view of a sliding door according to the invention Fig. 2: a schematic view of the two-leaf sliding door with the arrangement of the auxiliary drive (reducing drive) and Fig. 3: the geared motor with clutch and drive pulley for normal operation of the sliding door.

In Fig. 1, a sliding door of the type according to the invention is shown schematically in a perspective view with two door leaves. The two door leaves 1 and 1 'are hung on a fighter 2 with an air slide on the carriage 3 via suspension devices 4 with rollers 5 and fall protection 6 in a known manner.

Door leaves 1 and 1 'are actuated by drive means 7. This drive means can e.g. be a Zahnriemeπ, which is driven by a toothed belt pulley 8 of a motor with gear 9 and an electromagnetic clutch 20. The toothed belt 7 is an endless belt and is connected to the T wings in a manner known per se. It runs at the end opposite to the drive motor around a deflection plate 10.

The sliding door is operated in normal operation via the corresponding control and monitoring devices 11 and 12. The door is guided in corresponding floor slides 13 on the floor.

In the implementation of the invention, as shown in FIG. 2, an elastic rubber element 14 is provided that is connected to the carriage 2 of the door leaf 1 at 15. The rubber element then runs over a Umle roile 16 and back 17, above the door leaf 1 and the carriage 21 to the attachment point 18 on the fighter 2nd

The drive disk 19 is connected to the gear 22 of the motor 9 via an elec magnetic clutch 20 connected. The reference numeral 23 in Fig. 1 denotes the power supply and the reference numeral 24 a lock for the door.

The functional sequence can be clearly seen from the preceding description. In normal operation, the sliding door is operated by regulating and monitoring devices, in which the drive motor 9 is accordingly supplied with energy. The door opens and closes by means of the gear motor, which drives the toothed belt once so that the door leaves open and once so that the door leaves close.

Since the rubber element 14, as shown in Fig. 2, is attached at one end to the fighter at 18, i.e. at a fixed point and with its other end at 15 on a carriage of the door leaf 1, the rubber element is tensioned every time the door closes, i.e. energy is stored in it. This energy is released when the energization of the electromagnetic clutch is interrupted, with the result that the clutch 20 disengages between the motor and the drive toothed disk 19. The toothed lock washer is no longer positively connected to the motor. The stretched rubber element can therefore contract and open the sliding door.

Since the sliding door panels 1 and 1 'are connected to each other via the drive means 7, the force of the rubber element acts on both door panels and opens them.

Instead of connecting the rubber element at 15 to the door leaf 1, it could also be connected to the door leaf 1 ', but then the attachment of the other end of the rubber element would not take place at 18, but at the opposite end of the fighter 2. The deflection roller 16 would then be 18

As already shown above, the leaves of the sliding door are always opened when the power supply fails. The sliding door can also be switched so that the power supply to it is interrupted even if a fire alarm is triggered or a similar emergency or dangerous situation occurs. This application is then switched by suitable control units. The use of the rubber element 14 is a simple, progressive and expedient solution in the sense of the invention. The rubber element 14 can also be replaced by any other energy-storing device which acts in a similar way on the sliding door, for example a mechanical spring or a cylinder and piston device with a corresponding linkage and a pressure accumulator with a corresponding pressure medium. These elements also provide sufficient security for the sliding door to function in an emergency.

Reference directory

1. Door leaf

1'. Door leaf

2nd fighter

3. Run agen

4. suspension devices

5. Casters

6. Fall protection

7. Drive means

8. Timing belt pulley

9. Drive motor

10. Deflection roller

11. Control device

12. Monitoring device

13. Floor glider

14. Rubber element

15. Connection

16. Deflection roller

17. Course of the rubber element

18. Fastening point on the fighter

19. Drive pulley

20. Coupling

21. Run agen

22. Gearbox

23. Power supply

24. Locking

Claims

Patent claims

1. Automatic sliding door with at least one wing, which is operatively coupled via a drive means which can be driven by a motor via a clutch, in such a way that the door wing (s) can be opened and closed, characterized in that an auxiliary drive is present, the when the door is closed normally, energy is supplied, it is stored therein and, in the event of a power failure in the power supply, separation of the normal drive (9, 20) from the sliding door takes effect, and the door (1, 1 ') automatically opens.

2. Automatic sliding door according to claim 1, characterized in that for separating or uncoupling the normal drive (9) the sliding door between the drive (9) and the door leaf / an electromagnetic clutch (20) is provided, which decouple in the event of a power failure or voltage cut-off

3. Automatic sliding door according to claim 1, characterized in that the auxiliary drive as a storage device or device consists of a hydraulic or pneumatic pressure accumulator.

4. Automatic sliding door according to claim 1, characterized in that the auxiliary drive consists of a spring-loaded unit.

5. Automatic sliding door according to claim 1 and 2, characterized in that the auxiliary drive is an elastic element (14) which is connected to the fighter (2) on the door and once with a door leaf and if necessary via a deflection roller (16) is led.

6. Automatic sliding door according to claim 1 and 5, characterized in that the auxiliary drive is an elastic rubber element (14).