EP4223970A1 - Drive unit for a sliding gate - Google Patents

Abstract

The present invention relates to a sliding gate (2) with at least one sliding door (4) supported and movably guided on a running rail (8) via a running gear (10), a drive unit ( 6) for moving the sliding door (4), a connecting element (16) for connecting the sliding door (4) to the drive unit (6), and a mechanical emergency closing device (14). In order to relieve the emergency closing device, it is proposed that the connecting element (16) has a movable coupling device (18) which, in a first operating position (A), transmits a driving force generated by the drive unit (6) and transmitted to the wrapping element (12) from the wrapping element (12) to the sliding door (4) and in In a second operating position, the drive connection between the wrap-around element (12) and the sliding door (4) is interrupted, and the coupling device (18) has an actuating device (20), the actuation of which holds the coupling device (18) at least in the first operating position (A). is.

Description

The present invention relates to a sliding door with at least one movable sliding door supported on a running rail via a running gear, a drive unit provided with a belt element and a drive motor connected to it for the movable drive of the sliding door, a connecting element for connecting the sliding door to the drive unit, and a mechanical emergency closing device.

From Scripture DE 10 2010 024 755 A1 a generic sliding gate in the form of a fire protection sliding door is known. The fire protection sliding door is moved with an electric drive motor. In the case of fire protection sliding doors, it is particularly important to be able to safely close the sliding door, even if the door drive fails, in order to protect the areas of a building that can be separated from one another by the sliding door from an unwanted draft of smoke, gases and heat. In this document, a fire protection sliding door is described in which, after a fire alarm and/or failure of the mains supply voltage of the door drive, the door is forcibly closed by a coated rubber cable that is tensioned with every opening movement. Secure closing in the event of a fire is therefore carried out using pre-stored mechanical energy.

Other drives for sliding doors, in particular fire protection sliding doors, are known from the prior art, in which counterweights are pulled upwards when the sliding doors are opened, in order to use the potential energy stored in the counterweights to still close the sliding doors safely in an emergency, even if the electric drive fails to be able to Examples of such electric drive units are the Schnetz ATS 300-MOFE drives from the company Schnetz or the dictamat 7000-21 ZEM door operator from Dictator. The closing force can also be generated by other suitable mechanical means, such as mechanical springs or the like, in a mechanical emergency closing device.

In the known drive systems, an electric motor with a drive pinion is often used as the drive unit, which drives a toothed belt as a looping element, with the toothed belt running over a deflection roller which is arranged stationarily on the opposite side of the drive pinion of the drive unit, with the toothed belt having a driver as a connecting element has, which is connected to a carriage and / or a door leaf of the sliding door. A drive chain, a V-belt, a rope or some other suitable means of power transmission can also be used as the wrapping element.

During normal operation of powered sliding doors, they are only moved open and closed by the drive unit. In the case of fire protection sliding doors in particular, however, the problem arises that they still have to be moved reliably by a drive at least from an open position into the closed position if the actual drive unit fails. In order to ensure this function, the sliding gates have a mechanical emergency closing device, with which the sliding door can still be moved into a closed position even if the drive unit fails.

The known mechanical emergency closing devices must be dimensioned in such a way that they reliably overcome the mechanical resistances that prevent the sliding door from closing securely. The mechanical resistance can result, for example, from frictional forces on the running rails, Seals and the carriage occur, but also from forces from the drive unit, such as reverse torques and inhibitions from the drive motor and a gearbox, if available. The greater the mechanical resistance, the greater the driving forces that have to be provided via the mechanical emergency closing device. In order to keep the inhibition and the reverse torques from the drive unit as low as possible, these are constructed in a particularly complex manner and are expensive. Not all types of drive motors and gear types can be used in the drive unit. The emergency closing device is comparatively large and complex, and its ongoing operation causes energy consumption and puts a strain on the door mechanism. The manual operation of the sliding door is difficult.

It is the object of the present invention to improve the drives known from the prior art.

The object is achieved in that the connecting element has a movable coupling device which, in a first operating position, transmits a driving force generated by the drive unit and transmitted to the belting element from the belting element to the sliding door, and in a second operating position the drive connection between the belting element and the sliding door is interrupted , and the coupling device has an actuating device, with the actuation of which the coupling device is held at least in the first operating position.

The coupling device makes it possible to separate the drive unit from the rest of the mechanism of the sliding door. If the coupling device has been displaced by the inactivation of the actuating device in the second operating position and the When the drive unit is disengaged, the sliding door can be moved freely from the mechanical resistance coming from the drive unit. For the mechanical emergency closing device, this means that its dimensions no longer have to be designed to also overcome the mechanical resistance from the drive unit. This makes it possible to dimension the mechanical emergency closing device considerably smaller than it appeared to be necessary with the emergency closing devices previously known from the prior art.

The door mechanism is less stressed due to the reduced emergency closing device. The energy consumption of the drive unit is also reduced during normal operation due to the reduced emergency closing device.

Due to the possibility of decoupling the drive unit from the rest of the mechanism of the sliding door, it is no longer necessary to optimize the drive unit for the lowest possible mechanical resistance. This means that other motors and gears can be used in the drive unit, which can also generate higher mechanical resistance.

The sliding door can also be moved more easily manually when the coupling device is in the second operating position. It is no longer necessary to overcome the mechanical resistance from the drive unit during manual operation.

The actuating device can be designed in such a way that it holds the coupling device at least in the first operating position. For that are comparative low magnetic forces required. The engagement movement of the coupling device from the second operating position to the first operating position can take place in other ways, for example by a simple mechanical guide link when the sliding door is closed, a manually operated lever, a pull cable or by another motor. However, the actuating device can also be designed to be so strong that it is able to move the coupling device from the second to the first operating position.

According to one embodiment of the invention, the coupling device is designed as a pawl which is pivotably connected to the sliding door and on which an engagement element for positive and/or non-positive connection with at least one of a number of driver elements present on the wrap-around element is arranged. The latch can be a simple swing arm that is inexpensive to manufacture and assemble. As a simple mechanical component, the pawl has a high level of operational reliability. The force-transmitting connection between the coupling device and the wrap-around element can be produced by an engagement element that abuts at least one of the driver elements that are formed on the wrap-around element. When the engagement element rests against one of the driver elements, a form-fitting connection can be established between the engagement element and the at least one driver element if these elements have a mutually complementary shape. Instead of or in addition to the form-fitting connection, the engagement element and the driver elements can also be connected to one another in a non-positive manner in order to transmit the driving force from the wrap-around element to the sliding door. The engagement element and the driver elements can be formed, for example, as a mutually complementary shaped toothing, which engages with each other when at least one tooth of a Engagement element rests against at least one tooth of a driver element. Due to the drive force from the drive unit acting on the engagement element and the driver element that is in engagement with it, these two components can also be held on one another in a non-positive manner, for example also with a frictional force.

According to one embodiment of the invention, the wrap-around element is designed as a toothed belt that has a number of teeth on its inside that protrude beyond the belt strand. A toothed belt is a cost-effective and low-maintenance drive element that has a long service life, requires no separate lubrication and can be operated very quietly.

According to one embodiment of the invention, the engagement element has a plurality of teeth on its side facing the wrap-around element. Greater driving forces can be transmitted with a plurality of teeth. If there are several teeth, there is also greater operational reliability because, in the event of damage to one of the teeth, there are still other teeth via which the driving forces can still be transmitted.

According to one embodiment of the invention, the drive unit is fixed to a building and the coupling device is fixed to the sliding door. When the coupling device including the operating device is connected to the sliding door, the coupling device is moved along the track rail together with the sliding door when the sliding door is opened and closed. This is independent of whether the sliding door was moved with the drive unit into a position in which the coupling device is to be moved from the first to the second operating position or in the opposite direction. About the With the coupling device, it is possible to restore the drive connection between the wrapping element and the sliding door at any point at which the sliding door is located at a time, after the drive connection was previously interrupted, by moving the coupling device from the second operating position to the first operating position . This can be done, for example, by switching the electromagnet on again and bringing the coupling device back into its first operating position.

According to one embodiment of the invention, the actuating device is designed as an electromagnet that generates a magnetic force when energized, the movable clutch device has a component made of a ferromagnetic material, and the movable clutch device is held in the first operating position by the electromagnet. During normal operation, an electrical voltage is applied to the electromagnet, as a result of which it generates a magnetic force that acts on the component made of a ferromagnetic material connected to the coupling device and thereby holds the coupling device in the engaged position with the belt element. When the drive unit is actuated, the coupling device transmits the drive force of the drive unit to the sliding door, and the sliding door can be opened and closed with the drive unit in normal operation. If the sliding door is to be opened and closed mechanically or closed using the mechanical emergency closing device, the power supply to the electromagnet is interrupted. Since then the magnetic force is eliminated, the coupling device is also no longer held in the first operating position by the magnetic force. The coupling device moves to the second operating position in which it no longer has a drive connection between the drive unit and the sliding door manufactures more. The sliding door can then be moved without having to overcome the mechanical resistances resulting from the drive unit during a movement.

According to one embodiment of the invention, the electromagnet is arranged in an installation position above the component made of a ferromagnetic material and the coupling device is in its first operating position in a position that is closer in height to the electromagnet than in the position that corresponds to the second operating position. With this vertical arrangement of the components relative to one another, the coupling device, driven by gravity, falls down into the second operating position when the electromagnet is switched off. In this way, switching between the first and second operating positions takes place automatically when the electromagnet is switched off.

According to one embodiment of the invention, the wrap-around element is arranged with its upper strand between the electromagnet and the clutch device. In this arrangement, the electromagnet pulls the clutch device upwards when it is switched on, so that in its first operating position it rests against the inside of the belt element from below. With this arrangement, good engagement can be established between the clutch device and the sling element.

According to one embodiment of the invention, the coupling device has a guide link with which the coupling device is held in the closed position of the sliding door in the first operating position. The guide link ensures that the coupling device is always in the first operating position when the sliding door is closed. Once the sliding door is closed, it is irrelevant whether the mechanical resistance from the drive unit could still prevent the sliding door from closing. However, it is advantageous if the sliding door can always be opened again immediately with the drive unit from the closed position, without it being necessary to bring the coupling device back into the first operating position. Conversely, it is advantageous if the sliding door cannot be opened again too easily from the closed position, but must also be opened against the mechanical resistance from the drive unit if the drive unit has failed, for example in the event of a fire. This increases the safety of the sliding door. The guide slot can be formed, for example, by an inclined lifting lug which is located on the underside of the coupling device and which runs onto a lifting roller which is located in the area of the closed position of the sliding door and which is arranged at such a height that the coupling device is positioned exactly in the first operating position stops when the sliding door is completely or at least almost completely closed.

Further features of the invention result from the claims, the figures and the description of the figures. All features and feature combinations mentioned above in the description and the features and feature combinations mentioned below in the description of the figures and/or shown alone in the figures can be used not only in the combination specified, but also in other combinations or alone.

The invention will now be explained in more detail using a preferred exemplary embodiment and with reference to the accompanying drawings.

Fig. 1a und 1b:

Front- und Seitenansichten auf ein Schiebetor,

Fig. 2:

eine Schnittansicht durch den oberen Teil eines Schiebetors,

Fig. 3:

eine Detailansicht auf die Kupplungsvorrichtung in der ersten Betriebsstellung,

Fig. 4:

eine Detailansicht auf die Kupplungsvorrichtung in der zweiten Betriebsstellung, und

Fig. 5:

eine Detailansicht auf die Schiebetür in der geschlossenen Position.

Show it:

Figures 1a and 1b:

Front and side views of a sliding gate,

Figure 2:

a sectional view through the upper part of a sliding gate,

Figure 3:

a detailed view of the coupling device in the first operating position,

Figure 4:

a detailed view of the coupling device in the second operating position, and

Figure 5:

a detailed view of the sliding door in the closed position.

In Fig. 1a a sliding gate 2 with a sliding door 4 is shown from a front view. The sliding door 4 is moved by a drive unit 6 . The sliding door 4 runs on a running rail 8 by means of a carriage 10. The emergency closing device 14 is located on the side of the sliding door 4 and, in the exemplary embodiment, consists of weights which are connected to the sliding door 4 via a traction cable. The Fig. 1b shows the sliding gate 2 from a side view.

The 2 shows a sectional view through the upper part of a sliding gate 2. In this view, the running gear 10 with its rollers, which roll on the running rail 8, can be clearly seen. From the wrapping element 12 only the upper and lower run of a toothed belt can be seen in a sectional view, which forms the wrapping element 12 in the embodiment. Via the connecting element 16, the generated by the drive unit 6 and on the wrap-around element 12 transmitted driving force transmitted to the sliding door 4. The connecting element 16 is connected to the sliding door 4 via a sheet metal bracket. The connecting element 16 has a coupling device 18 which, in FIG 2 shown first operating position A with the engagement element 22 is in engagement with the wrap element side driver element 24. The movable coupling device 18 is connected to a component 26 made of a ferromagnetic material. The coupling device 18 is held in the first operating position A by the actuating device 20, which is formed by an electromagnet in the exemplary embodiment. When energized, the electromagnet exerts at least one force of attraction on the component 26 .

The 3 shows a detailed view of the connecting element 16 with the coupling device 18, which is in the first operating position A. If the upper run of the wrap-around element 12 is moved in one of the directions of the double arrow, the driver elements 24 take the engagement element 22 and thus also the sliding door 4 with them in the respective direction of movement, because the engagement element 22 and the driver elements 24 in the exemplary embodiment are in a form-fitting and positive engagement with each other.

The 4 shows the detailed view 3 , albeit with the coupling device 18 in the second operating position B. Because the engagement element 22 and the driver elements 24 are not in engagement with one another in the second operating position B of the coupling device 18, a movement of the upper run of the belt element 12 moves in one of the with the In the directions of movement indicated by the double arrow, only the wrap-around element 12, but not the sliding door 4.

In figure 5 a detailed view of the sliding door 4 in the closed position is shown. On the underside of the coupling device 18 there is a lifting lug 28 which, with a continued closing movement in the direction of the in figure 5 Arrow shown runs onto the lifting roller 30. The lifting lug 28 and the lifting roller 30 together form a guide link with which the coupling device 18 is held in the first operating position A in the closed position of the sliding door 4 .

The invention is not limited to the above exemplary embodiments. It is not difficult for a person skilled in the art to modify the exemplary embodiments in a manner that he deems suitable in order to adapt them to a specific application.

reference number list

2

sliding gate

4

sliding door

6

drive unit

8th

running rail

10

drive

12

wrapping element

14

emergency closing device

16

fastener

18

coupling device

20

operating device

22

engagement element

24

driver element

26

component

28

lifting nose

30

lifting roller

A

first operating position

B

second operating position

Claims (9)

Sliding gate (2) with at least one sliding door (4) supported and movably guided on a running rail (8) via a running gear (10), a drive unit (6) provided with a belting element (12) and a drive motor connected thereto for the mobile drive of the sliding door (4), a connecting element (16) for connecting the sliding door (4) to the drive unit (6), and a mechanical emergency closing device (14), characterized in that the connecting element (16) has a movable coupling device (18) which in a first operating position (A) transmits a drive force generated by the drive unit (6) and transmitted to the wrapping element (12) from the wrapping element (12) to the sliding door (4) and in a second operating position (B) the drive connection between the wrapping element (12 ) and the sliding door (4) is interrupted, and the coupling device (18) has an actuating device (20), with the actuation of which the coupling device (18) is held at least in the first operating position (A). Sliding gate (2) according to Claim 1, characterized in that the coupling device (18) is designed as a latch which is pivotably connected to the sliding door (4) and on which an engagement element (22) for positive and/or non-positive connection with at least one of a number of driver elements (24) present on the wrap-around element (12). Sliding gate (2) according to Claim 1 or 2, characterized in that the wrap-around element (12) is designed as a toothed belt which has a number of teeth on its inside which protrude beyond the belt strand. Sliding gate (2) according to one of the preceding claims, characterized in that the engagement element (22) has a plurality of teeth on its side facing the wrap-around element (12). Sliding gate (2) according to one of the preceding claims, characterized in that the drive unit (6) is fixed to a building and the coupling device (18) is fixed to the sliding door (4). Sliding gate (2) according to one of the preceding claims, characterized in that the actuating device (20) is designed as an electromagnet which generates a magnetic force when energized, the movable coupling device (18) has a component (26) made of a ferromagnetic material, and the movable clutch device (18) is held in the first operative position (A) by the electromagnet. Sliding gate (2) according to Claim 6, characterized in that the electromagnet is arranged in an installed position above the component (26) made of a ferromagnetic material and the coupling device (18) is in its first operating position (A) in a position which in terms of height is closer to the electromagnet than in the position corresponding to the second operating position (B). Sliding gate (2) according to Claim 7, characterized in that the wrap-around element (12) is arranged with its upper run between the electromagnet and the coupling device (18). Sliding gate (2) according to any one of the preceding claims, characterized in that the coupling device (18) has a guide link with which the coupling device (18) is held in the closed position of the sliding door (4) in the first operating position (A).

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