EP1612363B1 - Automatic sliding door system - Google Patents

Description

The invention relates to a method for operating an automatic sliding door system according to the preamble of patent claim 1.

From the DE 32 02 784 A1 is known an automatic sliding door system with at least one drivable by a drive device sliding sash. The sliding door system can be used in principle in an escape and rescue route by the drive device is designed so that the sliding sash is fully opened after activation of the control device. A monitoring area which is passed by a vertical secondary closing edge of the sliding leaf when the sliding leaf is opened is monitored by a sensor device in that the sensor device outputs a signal indicating this state to the control device in the presence of an obstacle in this monitoring area. The braking of the opening movement takes place immediately.

From the DE 39 40 762 A1 is another, also deployable in an escape and rescue route, automatic sliding door system with at least one drivable by a drive device sliding wing known. The drive device is controlled by an electronic control device.

In such sliding door systems, it is common for the sliding sash to be driven at high speed after an acceleration phase in a high-speed phase. In particular, in an emergency, this opening movement is required at high speed, since the drive device must be designed so that the sliding leaf after activation of the control device is opened as quickly as possible and completely with an emergency signal or in the event of a mains power failure. The sliding sash has to reach a required minimum opening width within a given maximum time according to a valid national regulation. However, a quick opening of the sash is also desirable in normal operation to allow the passage through the automatic sliding door system in an approaching person quickly.

Although in this way a rapid opening of the sliding sash is achieved in an emergency, but this operating method thus brings with it new risks. Due to the uncontrolled, rapid opening movement of the sash there is the danger that obstacles are detected and possibly jammed by the secondary closing edge of the moving at high speed, so having a high kinetic energy sliding sash, especially if parallel to the sliding sash a fixed wing is present, which is adjacent to the wall.

For this purpose, usual protective measures are protective wings, which together with the fixed wing form a pocket, in which the sliding wing enters during its opening movement. A disadvantage of this type of protection is that the inner surfaces of the fixed wing and the protective wing are not accessible (for example, for cleaning purposes), so that further, complex measures for temporary removal of the protective wing are necessary.

Alternatively, the width of the sash may be selected to be smaller than the width of the associated fixed sash so that when the sash is open a predetermined distance (eg, 20 cm) remains between its sidelobe and adjacent wall. A disadvantage of this type of protection is that only a correspondingly narrower passage area can be realized due to the smaller width of the sliding leaf. In addition, collisions of the secondary closing edge of the moving at high speed, so high kinetic energy having sliding sash with obstacles are not prevented by this anti-trap measure.

The invention has for its object to provide a method for operating an automatic sliding door system, which ensures reliable protection of the secondary closing edge of a sliding sash.

The object is solved by the features of patent claim 1.

The dependent claim forms an advantageous embodiment of the invention.

The sliding leaf is braked to a lower speed in the presence of an obstacle after a shortened high-speed phase in a braking phase, which adjoins the high-speed phase earlier than the course of the obstacle-free movement speed.

These measures ensure reliable protection of the secondary closing edge of the sliding sash. In this case, the acceleration phase, the shortened high-speed phase and the braking phase are dimensioned so that the required minimum opening width is achieved within the predetermined maximum time, so as to ensure that the sliding leaf reaches a required minimum opening width within a predetermined maximum time according to a valid national regulation.

The subsequent movement at a lower speed ensures that the sliding sash can reach its full open position, whereby due to the low kinetic energy of the sliding sash of this no longer as much danger poses as in a fast movement.

In order to further reduce this risk, if the valid national regulation allows it, an additional safeguarding, for example by measuring the wing speed or the motor current, can be provided for this movement phase at a lower speed, so that an obstacle becomes trapped during this movement phase for switching off the drive device leads. Since the required for the escape and rescue route minimum opening width is already reached or exceeded in this phase of movement is despite the stop of the sliding sash, the escape and rescue route function of the sliding door system is fulfilled.

Fig. 1

eine automatische Schiebetüranlage in Frontansicht;

Fig. 2

den wegabhängigen Geschwindigkeitsverlauf beim Öffnen des Schiebeflügels in einem Notbetriebszustand.

In the following an embodiment in the drawing with reference to the figures will be explained in more detail. Showing:

Fig. 1

an automatic sliding door system in front view;

Fig. 2

the path-dependent speed curve when opening the sliding sash in an emergency operating state.

FIG. 1 shows an automatic sliding door system 1 with two sliding sashes 2 and two fixed fields 3. The sliding sash 2 are driven by a arranged on the sliding sashes 2 and the fixed fields 3 drive means 4, for example driven by a sensor that detects an approaching person. The sliding leaves 2 have approximately the same width as the adjacent fixed fields 3.

The sliding door system 1 is suitable for use in an escape and rescue route by the drive device 4 is formed so that the sliding panel 2 after activation of the control device with an emergency signal generated for example by a smoke or fire alarm or by a manually operated emergency button is fully open, wherein the sliding sash 2 within a predetermined maximum time (eg 3 seconds) reach a required minimum opening width (eg 80% of the full opening width).

In FIG. 2 is the speed V of the sliding sash 2 shown over the opening width X for the opening movement in the event of an emergency opening of the sliding door system 1. The closed position of the sliding sash 2 is designated by the opening width X ₀ , and the complete open position of the sliding sash 2 is designated by the opening width X ₂ . The minimum opening width of the sliding sash 2, which in the exemplary embodiment is 80% of the complete opening width X ₂ , is denoted by X ₁ . The maximum achieved speed of the sliding sash 2 is designated by v ₂ .

In the event that there is no obstacle in the surveillance area of the sensor devices 5 monitoring the secondary closing edges of the sliding sashes 2, the sliding sashes 5 pass through the speed profile indicated by the reference numeral 7, ie in the acceleration phase s ₁ the sliding sashes 2 become from standstill to high speed v ₂ , which they maintain in the high-speed phase s ₂ . This is followed by a braking phase s ₃ , in which the sliding leaves 2 are decelerated from their maximum speed v ₂ to a standstill and then the maximum opening width X _{2 have} reached. This ensures the fastest possible opening of the sliding sash 2 in the event of an emergency opening of the sliding door system 1, wherein the specification that the sliding sash 2 reach the required minimum opening width X ₁ within a predetermined maximum time is reliably fulfilled.

In the event, however, that an obstacle, in particular a person, is located in the monitoring area of the sensor device 5 monitoring the secondary closing edges of the sliding leaf 2, the sliding leaves 2 pass through the speed profile indicated by the reference numeral 8. With regard to the acceleration phase s _1, this corresponds to the velocity course 7 of the obstacle-free movement. However, the phase covered by the maximum speed v ₂ is limited to a shortened high-speed phase s ₄ , to which the braking phase s _{5 is} connected earlier than in the case of the speed curve 7 of the obstacle-free movement. After passing through the braking phase s ₅ , the speed of the sliding sash 2 is reduced to the low speed v ₁ , with which the sliding sash 2 are moved in their low-speed phase s ₆ to its full open position X ₂ . Shortly before reaching the full open position X ₂ , a deceleration takes place from the low speed v ₁ along the speed curve 7 of the obstacle-free movement, so that the sliding sashes 2 are decelerated to a standstill when the maximum opening width X ₂ is reached. It is essential that the acceleration phase s ₁ , the shortened high-speed phase s ₄ and the braking phase s ₅ are traversed within the predetermined maximum time, so that the required minimum opening width X _{1 of} the sliding sash 2 is then safely reached at least.

Of course, the opening movement of the sliding sash 2 during normal operation of the sliding door system 1, that is, when triggered by an approaching person opening the door, are monitored by the sensor device 5 and at the same speeds, as described above, take place.

List of reference characters

1

sliding door system

2

sliding panel

3

fixed panel

4

driving means

5

sensor device

6

monitoring area

7

speed curve

8th

speed curve

s ₁

acceleration phase

s ₂

High speed phase

s ₃

braking phase

s ₄

shortened high-speed phase

s ₅

braking phase

s ₆

Low-speed phase

v ₁

low speed

v ₂

maximum speed

X ₀

closed position

X ₁

Minimum opening width

X ₂

open position

Claims (2)

1. Method for operating an automatic sliding door system (1) having at least one sliding leaf (2), which can be driven by means of a drive device (4) activated by an electronic control device,
   where the sliding door system (1) can be used in an escape and rescue route, in that the drive device (4) is constructed such that the sliding leaf (2) is opened completely following activation of the control device, and
   where a monitoring area (6) which is passed by a vertical secondary closing edge of the sliding leaf (2) as the sliding leaf (2) is opened, is monitored by a sensor device (5), in that, if there is an obstacle present in this monitoring area (6), the sensor device (5) outputs a signal indicating this state to the control device, so that, after the passing of the acceleration phase (s₁) and a shortened high-speed phase (s₄), the sliding leaf (2) is braked down to a lower low speed (v₁) in a braking phase (s₅),
   characterized in that
   the braking phase (s₅) follows the high-speed phase (s₄) earlier than in the case of the speed curve (7) of the obstacle-free movement,
   but in such a way that the acceleration phase (s₁), the shortened high-speed phase (s₄) and the braking phase (s₅) are dimensioned such that a predefinable minimum opening width (X₁) is reached within a predefinable maximum time.
2. Method according to Claim 1,
   characterized in that, in the event of the presence of an obstacle in the monitoring area (6) of the sensor device (5), after reaching the minimum opening width (X₁), the sliding leaf (2) is driven at the lower low speed (v₁) as far as the complete opening width (X₂) in a low-speed phase (s₆).

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