EP0883725B1 - Emergency opening device for a folding hinged door or a folding hinged gate - Google Patents

Abstract

An emergency opening device for a swinging folding door or a swinging folding gate, using an electric motor drive with a switchable electromagnetic coupling for closing and opening the door panels. The door has an emergency opening device, whereby the emergency opening device consists of an elastic tension or compression device to which a pre-load can be applied during the closing of the door. The tension or compression device can be engaged in the drive shaft of the outer panel or in the vicinity of the main closing edge of the inner panel.

Description

The invention relates to a rotary folding door / gate with an emergency opening device and at least one outer and one inner door / gate wing with at least two wings connected to one another by means of a pivotable swivel joint, an outer wing in a swivel joint on the door frame or the like and the free one Main closing edge having the end of an inner door leaf in or on the door frame (frame), on the fighter or the like. Or by means of a folding linkage.

German patent 18 14 224 discloses a multi-leaf rotary folding door, in which the outer door leaf is driven by a four-bar mechanism, the drive shaft of which does not coincide with the pivot axis, i.e. coincides with the support bearing of the outer door leaf. In the area of the connection of the individual door leaves, a folding linkage is provided, which ensures a parallel arrangement of the individual door leaves with one another when the rotating folding door is open. An emergency opening device is not provided.

From the German patent application 40 14 727 by the applicant an automatic sliding door is known which consists of two oppositely movable door leaves guided on a running rail arranged on the fighter. An electric motor with an electromagnetic clutch is used to drive the door leaves. When the door leaf is closed, an elastic traction device (auxiliary drive) designed as a rubber element is pretensioned, so that the slide door is automatically opened in the event of a power failure or disconnection and the clutch is opened, so that the escape and rescue route in which such a door is located can also be used in the event of danger always release.

German Offenlegungsschrift 28 29 912 describes a folding door in which the folding door leaf is driven by a motor acting on the hinge pin of a hinge band, with the aim of achieving a more economical one Closing and opening behavior between the motor and the hinge pin an elastic coupling is arranged. In the gear train of the drive, a quick disengagement option is also provided, by means of which the gate can be operated by hand.

The German patent specification 32 02 930 relates to an electromagnetic drive for pivoting wings of doors or the like, in which a DC motor arranged in a housing acts on an toggle-lever-type linkage that actuates the pivoting wing via an intermediate, strongly translated planetary gear. The output shaft of the gear train is mounted in the base and carrier plate of the housing so that the linkage can be connected to the output shaft on both sides. On the side of the output shaft opposite the linkage, a return spring unit is arranged, which rotates the output shaft in the sense of a closure of the wing when the motor is de-energized. It is not a generic emergency opening device, but an automatic closing mechanism; furthermore, the linkage known from the abovementioned patent does not itself form the drive axis and thus the hinge of the door leaf.

The object of the invention is to provide an emergency opening device in a folding door or a folding door of the type mentioned above, by means of which the folding process of the individual door leaves can be initiated in a reliable manner and with the simplest possible construction materials in an emergency in the opening direction. Since such doors are usually opened and closed by suitable drive means, that is to say not by hand, and the drive means usually have to be supplied with electrical energy, the term “emergency” is to be understood in particular as a situation in which the electrical required for the opening process Energy fails or where a command to unlock the escape and rescue route is given by an alarm device or a manual switch operation. Part of the invention is therefore a drive designed as an electric motor drive, the electric motor being assigned an electromagnetic clutch which is automatically released in the event of a power failure. It should be noted that the emergency opening device must be designed so that the relatively large torque required at the beginning of the folding process can be applied to initiate the folding process.

The invention solves the stated problem by the teaching of claim 1. For the sake of clarity, the following description is based exclusively on a rotating folding door, whereas the invention also relates to a rotating folding door. With the arrangement of the traction or pressure medium directly in the drive axis or in the area of the main closing edge of the inner door leaf, a sufficient return force can be exerted on the door leaf with simple structural means without large losses occurring. There is no need for components that protrude outwards or inwards beyond the door wings in the passage area and are required for the emergency opening process.

Further design features of the invention are characterized by the subclaims.

In a preferred embodiment, a torsion spring mechanism is provided which, for example in the form of a torsion spring, is arranged within the drive axis of the outer door leaf arranged on the door frame or the like. When using, for example, a torsion spring, a spiral spring or the like, the torsion spring mechanism can alternatively be arranged concentrically with the drive axis of the outer door leaf arranged on the door frame or the like.

In a further embodiment of the invention it is proposed that the drive axle has a winding roller connected to it in a rotationally fixed manner, via which a linear traction means connected at the other end to a fighter or the like is guided. A sufficiently large torque can be applied to the drive axis of the outer door leaf in the opening direction by means of the linear traction means, which can be freely selected in strength, which can consist of a rope that can be tensioned by a spiral spring.

According to claim 8, the pivot point of the outer door leaf on the drive axis outside the drive axis, so that the pivot point of the outer door leaf when opening or closing the rotary folding door in one Circular path runs around the drive axis. which favors the opening and closing process.

In a further embodiment of the invention, the traction means consists of a rope attached in the area of the main closing edge of the inner door leaf, which is guided, possibly with deflection via a deflection roller, to an elastic store arranged on the fighter or the like, the elastic store preferably being a torsion spring is. Here, too, the return force required for the opening process of the door leaves can be freely selected by the choice of the elastic memory designed as a torsion spring, especially since the memory can be arranged at a suitable point in the area of the fighter.

As an alternative to this, a linear spring element can be used instead of an elastic memory designed as a torsion spring.

According to claim 12, the rotary folding door thus has at least four door leaves, at least two of which are each assigned to a drive axis such that the door leaves assigned to the drive axes can be moved in opposite directions.

Above, the invention has been described with reference to an outer folding door and an inner door leaf. It goes without saying that the invention can be used analogously in the case of rotary folding doors with oppositely movable door leaves, the respective pulling or pushing means being assigned to the respective left or right drive axis.

Fig. 1 und 2:

die Türöffnung durch Erzeugen eines Drehmomentes in Öffnungsrichtung an den Antriebsachsen der äußeren Türflügel

Fig. 3 und 4:

die Türöffnung durch Erzeugen einer Kraft, die im Schließkantenbereich linear in Öffnungsrichtung angreift

The invention is explained in more detail below on the basis of four possible schematically illustrated exemplary embodiments. Show it:

1 and 2:

the door opening by generating a torque in the opening direction on the drive axes of the outer door leaves

3 and 4:

the door opening by generating a force that acts linearly in the opening direction in the closing edge area

In Figures 1 to 4, the rotary folding door generally designated 1 is shown schematically. It can be assumed that the opening and closing of the door leaves 2, 2 ', 3, 3' takes place in a known manner by an electric motor, not shown, with a reduction gear and an electromagnetic switchable clutch, the traction means to be explained in detail being pretensioned when the rotary folding door is closed , ie they are given energy. When the electric motor is de-energized and the clutch is automatically released, the traction means shown in the four exemplary embodiments spend the individual door leaves in the open position due to the stored energy.

The same components have been given the same reference symbols in the individual figures.

The rotary folding door 1 has two outer door leaves 2, 2 'and two inner door leaves 3, 3'. The outer door leaves 2, 2 'are mounted on brackets 5 on a door frame 4 and can be pivoted about drive axes 6, 6', the pivot point 8 of the outer door leaf 2, 2 'being outside the pivot axis (drive axis) 6, 6'. The two door leaves 2, 3 and 2 ', 3' are connected to one another by a swivel joint 9, the inner door leaves 3, 3 'with their main closing edges 7, 7' being arranged facing each other.

The emergency opening device, generally designated 11, according to FIG. 1 essentially consists of a torsion spring mechanism 12 arranged in or on the drive axis 6, 6 ', which is designed as a torsion spring according to FIG. 1 and on the outer door leaf 2, 2' and thus on the inner door leaf 3, 3 'can exert the torsional moment designated Mt. The torsion spring mechanism 12 is prestressed in the manner described above each time the rotary folding door 1 is closed, so that when the power is switched off and the electromagnetic clutch (not shown) is released, the door leaves 2, 3 or 2 ', 3' are pulled into the open position shown in broken lines.

In the exemplary embodiment according to FIG. 2, the torsion spring mechanism 12 according to FIG. 1 has been replaced by a spiral spring 15 designed as a linear spring element, which has the spring force designated by F. transmitted via a linear traction means 14 designed as a rope 16 to a winding roller 13 connected in a rotationally fixed manner to the drive axle 6, 6 'and thus bringing the door leaves 2, 3 or 2', 3 'into the open position shown in broken lines.

In the exemplary embodiment according to FIG. 3, a rope 17 is also used, which is guided from the closing edge 7, 7 'via a deflecting roller 18 fastened to the door frame 4 by means of a bracket 5' to an elastic memory which is designed as a torsion spring 19. The torsion spring 19 is suitably arranged in the area of the fighter or the like. It can be seen that the torsion spring 19 is suitable when the current is switched off, the cable 17 is wound up via the torsion spring 19 and the door leaves 2, 3 or 2 ', 3' are brought into the open position.

According to the exemplary embodiment according to FIG. 4, the torsion spring 19 according to FIG. 3 has been replaced by a linear spring element 22 acting on a cable 20.

In the above description, it can be assumed that the door leaves 3, 3 'are positively guided in generally designated 10 positive guides in the area of the fighter or the floor, or that at least in the area of the pivot joints 9, 9', which are arranged between two door leaves, are known folding rods are arranged.

reference numeral

1

folding hinged door

2

outer door leaf

2 '

outer door leaf

3

inner door leaf

3 '

inner door leaf

4

doorframe

5

console

5 '

console

6

drive axle

6 '

drive axle

7

Main closing edge

7 '

Main closing edge

8th

articulation

9

pivot

9 '

pivot

10

forced control

11

emergency opening

12

Torsion spring mechanism

13

reel

14

linear traction

15

spiral spring

16

rope

17

rope

18

idler pulley

19

torsion spring

20

rope

21

idler pulley

22

linear spring element

Mt

torsional

F

spring force

Claims (11)

1. A folding hinged door or folding hinged gate including an emergency opening device, and at least an exterior door leaf or gate leaf (2, 2') and an interior door leaf or gate leaf (3, 3'), and at least two door leaves (2, 2', 3, 3') connected to each other by means of a swing-out pivoting articulation (9, 9'), an exterior door leaf (2, 2') being forcibly guided in a swivel joint at a door frame (4) or the like, and the interior door leaf's (3, 3') free end presenting a main closing edge (7, 7') being forcibly guided in or at the door frame (4), on the transom or the like, or by means of a folding arm, characterised in that the swivel joint builds the exterior door leaf's (2, 2') driving axle (6, 6') and the drive to open and close the door leaves (2, 2', 3, 3') consists of an electric motor drive with electromagnetic engaging and disengaging coupling and the emergency opening device (11) consists of an elastic traction mechanism or pressure mechanism (12, 15, 19, 22) being pre-stressed upon closing the folding hinged door, and acting upon the exterior door leaf's (2, 2') driving axle (6, 6'), or acting upon a region of the interior door leaf's (3, 3') main closing edge (7, 7').
2. A folding hinged door or folding hinged gate according to claim 1, characterised in that the traction mechanism consists of a rotary spring mechanism arranged inside the exterior door leaf's (2, 2') respectively gate leafs driving axle (6, 6') which is mounted at the door frame (4) or the like.
3. A folding hinged door or folding hinged gate according to claim 1, characterised in that the traction mechanism consists of a rotary spring mechanism (12) arranged concentrically with regard to the exterior door leaf's (2, 2') respectively gate leaf's driving axle (6, 6') which is mounted at door frame (4) or the like.
4. A folding hinged door or folding hinged gate according to any of the claims 1 to 3, characterised in that the rotary spring mechanism (12) is executed as spiral spring or torsion bar.
5. A folding hinged door or folding hinged gate according to any of the claims the 1 to 4, characterised in that the driving axle (6, 6') presents a thereto torsion-resistant linked winding roller (13) via which a linear traction mechanism (14) is conducted and connected at the other end with a transom or the like.
6. A folding hinged door or folding hinged gate according to claim 5, characterised in that the linear traction mechanism (14) consists of a cable (16) tensioned by means of a spiral spring (15).
7. A folding hinged door or folding hinged gate according to any of the claims 1 to 6, characterised in that the exterior gate leaf's respectively exterior door leaf's (2, 2') articulated point (8) is located at the driving axle (6, 6') outside the driving axle (6,6').
8. A folding hinged door or folding hinged gate according to any of the claims 1 to 7, characterised in that the traction mechanism consists of a cable (17) fastened in the region of the interior gate leaf's respectively interior door leaf's (3, 3') main closing edge (7, 7'), which cable is conducted, if necessary reversed by means of a deflection pulley (18), to an elastic storage arranged at the transom or the like.
9. A folding hinged door or folding hinged gate according to claim 8, characterised in that the elastic storage is a torsion spring (19).
10. A folding hinged door or folding hinged gate according to any of the claims 1 to 9, characterised in that the traction mechanism consists of a cable (20) attached in the region of the interior gate leaf's respectively interior door leaf's (3, 3') main closing edge (7, 7'), which cable is reversed by means of a deflection pulley (21) mounted at the transom or the like and is lead to a linear spring element (22) mounted at the transom or the like.
11. A folding hinged door or folding hinged gate according to claim 1, characterised in that the folding hinged door (1) presents at least four door leaves (2, 2', 3, 3') thereof respectively at least two door leaves (2, 3 respectively 2', 3') are assigned to a driving axle (6, 6') in a way that the door leaves (2, 3 respectively 2', 3') assigned to the driving axles (6, 6') are moveable in opposite directions with regard to each other.