EP3892810B1 - Fire safety door - Google Patents

Description

The invention is based on a fire protection door for closing door openings, preferably in tunnel tubes.

In road tunnels and tunnels for train traffic, the escape routes and emergency exits are separated from the tunnel serving traffic by fire doors. In the event of a fire in the tunnel, such fire protection doors prevent the spread of fire and smoke into a second tunnel serving as an escape route and/or rescue route. The second tunnel can either be a safety tunnel used exclusively as an escape and rescue route, a second tube for traffic, or a connecting tunnel between two tunnel tubes used for traffic. The fire protection door typically has a door frame that serves as a door frame and delimits the door opening, and a door leaf that is rotatably arranged on the door frame and forms a door leaf. In order to stop the fire and smoke, the door leaf and possibly also the door frame are made of a material that is resistant to fire and heat.

A built-in fire protection door is normally closed. In the closed position, the fire protection door must pass through the vehicles in the tunnel withstand the built-up pressure. The vehicles driving in the tunnel generate negative or positive pressure. The automatic opening of the fire protection door due to the pressure in the tunnel is prevented by a locking device. The locking device locks the door leaf to the door frame in a door-closed position. In the event of an accident or danger, people can escape through the fire door. To do this, the people have to release the door lock by manually actuating a door handle and open the door leaf, which is designed as a door leaf, by applying force in the direction of escape. It is crucial that the fire protection door can also be opened by children and infirm persons. This applies both to releasing the lock when the door handle is actuated and to moving the door leaf from the door-closed position to an open position. As soon as the force that forces the door leaf into an open position is removed, the fire protection door usually closes automatically due to a door closing device.

The force that a person has to apply in order to open the fire door and move the door leaf into the door open position depends on the door and on the ambient pressure of the door. If there is different pressure on both sides of the closed fire door, this pressure difference must be overcome when the fire door is opened. In order to open the fire door in the direction of the area with higher pressure, an escaping person must apply additional force.

From the DE 10 2007 041 618 A1 a device for the pressure relief of fire protection doors is known, which is equipped with an electric drive, a rod extending out of a housing and a signal transmitter. If the signal transmitter detects that a person is approaching a fire door or that a person is operating the fire door, the drive is switched on. This ensures that the rod moves out of the housing and the door leaf is at least far enough away from the door frame that a gap is created that enables pressure equalization. proves disadvantageous However, be sure that the device is equipped with a drive that must be supplied with electricity.

CN 2 542 811 Y describes a fire protection door with a door leaf, which is equipped with door leaf slots designed as through openings, and with a slide arranged movably on the door leaf.

It is therefore the object of the present invention to provide a fire protection door in which the force required to open the fire protection door is reduced, in particular in the case of pressure differences, without an electrical power supply being necessary for this purpose.

This problem is solved by a fire protection door with the features of claim 1 . The fire protection door is characterized in that the door leaf has slits which are designed as through openings and are referred to as door leaf slits. The fire protection door is equipped with a slider that is movably arranged on the door leaf. In a slide closed position, the slide covers the door leaf slots. In a slide open position, the slide releases the door leaf slots. The special feature is that the slide is coupled to a door handle with which a lock latch of the fire protection door is moved from a lock latch closed position to a lock latch open position. This coupling means that when the door handle is actuated, the lock latch moves into the lock latch open position and the slide into the slide open position, and the door leaf slots are thus released by the slide.

The door handle can be designed, for example, as a door handle, as a push rod or as a pressure plate. The door handle is typically connected to a lock follower of a lock equipped with the lock latch. This lock is integrated into the fire door. It ensures that the fire protection door does not open by itself.

The lock can be equipped with one lock latch or with several lock latches. The lock latch can be arranged on the side of the door leaf facing away from the door hinge and can protrude laterally beyond the door leaf in the lock latch closed position. The lock can also be used with several Be equipped with lock latches, which are arranged on the side of the door leaf facing away from the door hinge, for example in the middle, upper and lower area of the door leaf. In addition, the lock can be equipped with lock latches which are arranged on the top of the door leaf and/or on the underside of the door leaf. In the lock latch closed position, these lock latches project upwards or downwards over the door leaf. They grab into a door lintel or a threshold.

When the fire door is closed, the slider is in its closed slider position so that the door panel slots are closed. If a person operates the door handle of the fire protection door, the lock latch is moved into the lock latch open position and the slide into the slide open position at the same time. Air can flow through the door leaf slots that are now open, so that the pressure on the fire door is equalized even before the person has moved the door leaf of the fire door into a door open position. When the door leaf is then moved, the person no longer has to overcome any pressure difference, which is why the force required to open the fire door is reduced.

The pressure is relieved due to the purely mechanical coupling of the slider to the door handle. An electrical power supply is not necessary for this.

The slider can be integrated into the door leaf or placed on the door leaf.

The slider automatically returns to its closed slider position when the fire door closes again.

According to an advantageous embodiment of the invention, the door leaf is equipped with an intumescent building material in the area of the door leaf slots. This expands under the influence of heat and completely closes the door leaf slots. Such building materials are also used as insulating layers designated. In the event of a fire and the resulting heat, the intumescent building material increases in volume and completely fills the door leaf slots designed as passage openings. The fire protection door thus inhibits the spread of the fire. The amount of intumescent building material is to be adapted to the size of the door leaf slots in such a way that the door leaf slots are completely closed in the event of a fire.

According to a further advantageous embodiment of the invention, the intumescent building material is arranged on the inside of the door leaf slots.

According to a further advantageous embodiment of the invention, the door leaf slits are essentially elongated. Long and comparatively narrow door leaf slits enable the intumescent building material to be closed quickly in the event of a fire.

According to a further advantageous embodiment of the invention, the door panel slots are arranged in a lower half of the door panel. Thus, the door leaf slots are not at the height of a person's face. If air carrying dust or dirt particles flows through the open door leaf slots as a result of pressure equalization, these particles do not hit the person in the face but at most on the legs.

According to a further advantageous embodiment of the invention, the door leaf is equipped with at least one profile rail, in which the slider is slidably guided. The slide can also be guided in several rails, for example in a first rail on the underside of the slide and in a second rail on the top of the slide.

According to a further advantageous embodiment of the invention, the rail is inclined to the horizontal and forms an inclined plane. The inclination of the rail is specified such that the in the Profile rail guided slide in the slide closed position has a lower level than in the slide open position. Following its own weight, the slider returns to the closed position of the slider by sliding down the inclined plane. The inclined plane on which the slider slides or rolls is formed by a section of the profile rail.

According to a further advantageous embodiment of the invention, the slide is equipped with rollers that roll in the profile rail. In addition, a sliding guide is also possible.

According to a further advantageous embodiment of the invention, the slide has slide slots. The number of slider slots corresponds to the number of door leaf slots. The shape and size of the slide slots essentially corresponds to the shape and size of the door panel slots. If the slider slots are brought into alignment with the door panel slots in the slider open position, the opening cross section of the door panel slots is not restricted at all or at most slightly restricted by the slider slots.

According to a further advantageous embodiment of the invention, the slide is designed as a plate-shaped element. The slide slits are designed as through-openings in the plate-shaped element.

According to a further advantageous embodiment of the invention, the fire protection door is equipped with a slider operating device which connects the slider to the door handle. The slider is not directly but indirectly coupled to the door handle. The slide actuator transmits the movement of the door handle to the slide. It is used for power transmission. In addition, the slide-actuating device can lock the slide in the slide-open position and ensure that the slide returns to the slide closed position when the fire door is closed.

According to a further advantageous embodiment of the invention, the slider actuating device has a reversing lever connected to the door handle. If the door handle is a door handle or door buckle, the reversing lever can be connected to the door handle in a rotationally fixed manner.

According to a further advantageous embodiment of the invention, the deflection lever is connected to the slider via a traction cable. The traction cable can be guided over deflection rollers.

According to a further advantageous embodiment of the invention, the slide actuating device has a hook which is arranged rotatably on the door leaf and hooks onto the slide when the slide open position is reached and holds the slide in the slide open position. The hook is used to lock the slide in the slide open position.

According to a further advantageous embodiment of the invention, the slide is equipped with a pin that protrudes beyond its surface and on which the hook hooks when it reaches the open position of the slide.

According to a further advantageous embodiment of the invention, the slide actuation device has a slide release spring-mounted on the door leaf, which projects beyond the door leaf when the fire protection door is open and which slides along the door frame when the fire protection door is closed and is pushed into the door leaf against the pressure of a spring. The slide release is connected to the hook in such a way that the movement of the slide release when the slide release is pushed into the door leaf is transferred to the hook. The hook is rotated about its axis of rotation, releasing the pin located on the slider. This leads to, that when the fire door is closed, the locking of the slide in the slide open position is released and the slide can return to its slide closed position.

According to a further advantageous embodiment of the invention, the hook is connected to the slide release via a connecting rod. The push rod transfers the movement of the slide trigger to the hook.

According to a further advantageous embodiment, the slide-actuating device is designed in such a way that the slide returns to its slide-closed position once pressure equalization has taken place. This is at the latest when the fire protection door is closed. The return to the slide closed position can be initiated in particular in that the hook releases the slide and the locking of the slide in the slide open position is thereby released. The slider is now no longer held in the slider open position. The movement of the slide from the slide open position to the slide closed position can be stimulated in different ways. For example, a profile rail in which the slide is guided can have an inclined plane, which the slide is moved up during the transition from the slide closed position to the slide open position. After releasing the lock, the slider slides down the inclined plane by itself under its own weight and returns to the closed slider position. Alternatively, a spring can be arranged between the slider and the door leaf, which is deflected when the slider transitions from the slider closed position to the slider open position. The spring force of this deflected spring ensures that the slider then returns to the closed slider position. A further alternative is that the return of the slide from the slide open position to the slide closed position is linked to the movement of the door leaf when the fire door is closed. Another alternative is that the Return of the slide from the slide-open position to the slide-closed position is coupled to the door handle or the latch bolt.

According to a further advantageous embodiment of the invention, the door leaf slots are covered with a grid. This prevents people from reaching into the slots with their hands and injuring themselves. Furthermore, the undesired penetration of parts into the door leaf slots is prevented, which could possibly affect the movement of the slider relative to the door leaf. The grid openings are dimensioned in such a way that precisely this intrusion is prevented.

Further advantages and advantageous configurations of the invention can be found in the claims. drawing

Figur 1

Ausführungsbeispiel einer Feuerschutztür in einer Aufsicht auf eine erste Seite des Türblatts,

Figur 2

Feuerschutztür gemäß Figur 1, wobei eine Abdeckung eines Schiebers und einer Schieber-Betätigungseinrichtung entfernt ist,

Figur 3

Ausschnitt aus Figur 2,

Figur 4

Schieber der Feuerschutztür gemäß Figur 1,

Figur 5

Haken und Schieberauslöser der Feuerschutztür gemäß Figur 1,

Figur 6

Horizontalschnitt durch die Feuerschutztür gemäß Figur 1 mit Schieber in Schieber-Schließstellung,

Figur 7

Horizontalschnitt durch die Feuerschutztür gemäß Figur 1 mit Schieber in Schieber-Öffnungsstellung.

Figur 8

Aufsicht auf eine zweite Seite des Türblatts der Feuerschutztür gemäß Figur 1.

In the drawing, an embodiment of the subject invention is shown. Show it:

figure 1

Exemplary embodiment of a fire protection door in a plan view of a first side of the door leaf,

figure 2

Fire door according to figure 1 with a cover of a slider and a slider actuator removed,

figure 3

excerpt from figure 2 ,

figure 4

Slider of the fire door according to figure 1 ,

figure 5

Hook and slide release according to fire door figure 1 ,

figure 6

Horizontal section through the fire door according to figure 1 with slide in slide closed position,

figure 7

Horizontal section through the fire door according to figure 1 with slider in slider open position.

figure 8

Supervision of a second side of the door leaf according to the fire door figure 1 .

Description of the embodiment

In figure 1 a fire protection door 1 is shown in a top view of a first side of a door leaf 2 . The door leaf 2 is rotatably arranged on a door frame 3 with hinges 4 . A door handle 5 is arranged on the door leaf 2, with which the fire door can be opened by a person not shown in the drawing. To do this, a person manually presses the door handle 5 down. As a result, a lock latch coupled to the door handle 5 of a lock is moved from a lock latch closed position into a lock latch open position. Lock, lock latch and a locking plate arranged on the door frame 3 are not shown in the drawing. In the lock latch closed position, the lock latch protrudes over the door leaf 2 and engages in the striking plate. As a result, the door leaf 2 is held on the door frame 3 with the side facing away from the hinges 4 . The fire protection door 1 is in its closed door position. In the lock latch open position, the lock latch has drawn into the lock and no longer engages in the striker plate. The fire door 1 can now be opened by one person by swinging the fire door in the direction of escape. As soon as the force opening the fire protection door ceases, in which the person lets go of the fire protection door, a door closing device 6 ensures that that the door returns to its door closed position. The door leaf 2 is equipped with several door leaf slots 7 in a lower half. a in figure 2 , 3 and 4 Slider 8 shown closes these door leaf slots 7 when the fire door is in its closed door position. A cover 9 arranged on the door leaf protects the slider 8 and a slider operating device.

figure 2 shows the fire protection door 1 without the cover 9. figure 3 shows a section figure 2 . figure 4 shows the slider 8. On the door leaf 2, a first rail 10 and a second rail 11 are arranged. The slider 8 is guided in these two profile rails 10, 11. The first rail 10 supports the slide 8 from below. It is inclined to the horizontal and forms an inclined plane. The slide 8 is equipped with rollers 12 on its underside, which roll in the first profile rail 10 . The second rail 11 runs horizontally. It is designed purely as a sliding rail and holds the slider 8 at its upper end.

figure 3 shows that a deflection lever 13 is arranged on the door handle 5 . The door handle 5 and the reversing lever 13 are connected to one another in a rotationally fixed manner and can be rotated about the same axis of rotation. A rotation of the door handle 5 about its axis of rotation thus leads to a rotation of the deflection lever 13 about the same axis of rotation. A traction cable 14 is fastened to the deflection lever 13 at its end remote from the door handle 5 . This is guided over two deflection rollers 15, 16 and attached to the slide 8. Deflection lever 13, traction cable 14 and deflection rollers 15, 16 are part of a slide-actuating device. They ensure that the slider 8 moves in the direction of the in figure 3 arrow shown is moved and in the process passes from a slide closed position to a slide open position. In the figures 2 and 3 the slide 8 is shown in its slide closed position. In this slide closed position, the slide 8 closes the door leaf slots 7.

figure 4 shows slider 8 on its own. The slider slots 17 can be seen in this representation. The number of slide slots 17 corresponds to the number of door panel slots 7 . Furthermore, the shape of the slide slits corresponds to that of the slits 7 in the door leaf. The slide 8 has a trapezoidal shape. The two vertical sides are parallel. The upper edge runs essentially horizontally. The lower edge extends to the horizontal at an incline which corresponds to the incline of the first profile rail 10 .

The slide actuating device also comprises a hook 18 arranged rotatably on the door leaf 2 , a slide release 19 and a push rod 20 . When the slide 8 is in the slide open position, it comes into engagement with the hook 18 . For this purpose, a pin is arranged on de slide 8, which protrudes from the surface of the slide 8 to the outside. For fine adjustment, four openings 21 are provided on the slide 8, into which the pin can be optionally inserted. When the slide 8 moves into its slide-open position, the pin slides along a beveled edge 22 of the hook 17 and thereby pushes the hook 18 upwards. As a result, the hook 18 is rotated about its axis of rotation 23 . When the pin has passed the flank 22 of the hook 18, the hook 18 falls down and holds the pin and the slider 8 in place. The slide 8 is thus locked in its slide open position. This slide open position also remains when the door handle 5 is no longer actuated and returns to its original position.

The hook 18 is designed as a two-armed lever. The first lever arm 24 has the hook-shaped section with the flank 22 . The second lever arm 25 is connected to the push rod 20 . This push rod 20 is coupled to the slide release 19 . This slide release 19 moves into a slide release closed position when the fire door 1 closes and the door leaf 2 is thus in contact with the door frame 3 . The slide release 19 is pushed into the door leaf 2 and pressed into the door leaf 2 . Of the Slide release 19 is spring-mounted in the door leaf 2. When the slide release 19 is pushed into the door leaf 2, a spring (not shown in the drawing) is deflected. The force of this deflected spring ensures that the slide release is automatically pushed out of the door leaf 2 again when the fire protection door is opened and moves into its slide release opening position. The movement of the slide trigger 19 when closing the fire door is transmitted to the hook 18 via the push rod 20 . The first lever arm 24 is raised and releases the pin and the slider 8 . The slide 8 can then slide down on its rollers 12 in the first profile rail 10 and return to its slide closed position. The movement of the push rod when opening and closing the fire door is in figure 5 represented by an arrow.

the Figures 6 and 7 show a horizontal section through the door leaf 2 in the door leaf slots 7. It shows figure 6 the slide 8 in its slide closed position. In this position of the slide 8, the slide slots 17 are offset from the door leaf slots 7, so that the door leaf slots are covered by the sections 26 between the slide slots 17. figure 7 shows the slide 8 in its slide open position. In this position, the slider slots 17 are in the same place as the door panel slots 7 so that the door panel slots are open and air can flow through them.

In the Figures 6 and 7 an intumescent building material 27 is also shown, which is arranged on the inside of the door leaf slots 7 . This building material has at room temperature and in a temperature range up to a predetermined maximum temperature in the Figures 6 and 7 shown expansion, in which the door leaf slots 7 are open. If the ambient temperature of the fire protection door exceeds the specified maximum temperature, the intumescent building material expands so that it closes the door leaf slots 7 .

figure 8 shows the fire door 1 in a plan view of the other side of the door leaf 2. The door leaf slots 7 can also be seen on this side. While the door handle is equipped with a door handle on the first side of the door leaf, the door handle on the in figure 8 shown second side equipped with a push rod.

reference numbers

1

fire door

2

door leaf

3

door frame

4

hinge

5

door handle

6

door locking device

7

door leaf slots

8th

slider

9

cover

10

First profile rail

11

Second profile rail

12

roll

13

reversing lever

14

pull rope

15

pulley

16

pulley

17

Slider Slots

18

hook

19

slide trigger

20

push rod

21

openings

22

flank

23

axis of rotation

24

First lever arm

25

Second lever arm

26

Section between two slider slots

27

Intumescent building material

Claims (17)

1. Fire safety door for closing door openings, preferably in tunnel tubes

   with a door leaf (2) movably arranged on a door frame (3), which door leaf comprises door leaf slits (7) in the form of through-holes,

   with a slider (8) movably arranged on the door leaf (2), which slider covers the door leaf slots (7) in a slider closed position and which opens the door leaf slots (7) in a slider open position,

   with a lock latch arranged on the door leaf (2), which is movable from a lock latch opening position retracted into the door leaf (2) into a lock latch closing position protruding beyond the door leaf (2) and vice versa,

   with a door handle (5) arranged on the door leaf (2), which is coupled to the slider (8) and to the lock latch and which, when actuated, simultaneously moves the lock latch to the lock latch opening position and the slider (8) to the slider open position.
2. Fire safety door according to claim 1, characterised in that the door leaf (2) comprises an intumescent material (27) in the area of the door leaf slits (7), which expands when exposed to heat and thereby completely seals the door leaf slits (7).
3. Fire safety door according to claim 2, characterised in that the intumescent material (27) is arranged on the insides of the door leaf slits.
4. Fire safety door according to one of the previous claims, characterised in that the door leaf slits (7) are oblong.
5. Fire safety door according to one of the previous claims, characterised in that the door leaf slits (7) are arranged on the lower half of the door leaf (2).
6. Fire safety door according to one of the previous claims, characterised in that the door leaf (2) comprises at least one profile rail (10, 11) in which the slider (8) is displaceably guided.
7. Fire safety door according to claim 6, characterised in that the profile rail (10) is tilted to the horizontal and forms an inclined plane.
8. Fire safety door according to claim 6 or 7, characterised in that the slider (8) comprises rollers (12) that roll in the profile rail (10).
9. Fire safety door according to one of the previous claims, characterised in that the slider (8) has slider slits (17); that the number of slider slits (17) corresponds to the number of door leaf slits (7); and that the shape and size of the slider slits (17) essentially correspond to the shape and size of the door leaf slits (7).
10. Fire safety door according to one of the previous claims, characterised in that the slider (8) is in the form of a plate-shaped element; and that the slider slits (17) are in the form of through-holes in the plate-shaped element.
11. Fire safety door according to one of the previous claims, characterised in that it comprises a slider actuating device which connects the slider (8) to the door handle (5).
12. Fire safety door according to claim 11, characterised in that the slider actuating device has a deflection lever (13) connected to the door handle (5).
13. Fire safety door according to claim 12, characterised in that the deflection lever (13) is connected via a pull cable (14) to the slider (8).
14. Fire safety door according to one of the claims 11 to 13, characterised in that the slider actuating device has a hook (18) arranged rotatably on the door leaf (2) that hooks into the slider (8) when the slider open position is reached and holds the slider (8) in the slider open position.
15. Fire safety door according to claim 14, characterised in that the slider (8) comprises a pin protruding beyond its surface on which the hook (18) catches when the slider open position is reached.
16. Fire safety door according to claim 14 or 15, characterised in that the slider actuating device has a slider release (19) which is spring-mounted on the door leaf (2), protrudes beyond the door leaf (2) with the fire safety door open and, when closing the fire safety door, slides along the door frame and is pushed into the door leaf (2) against the pressure of a spring; and that the slider release (19) is connected to the hook (18).
17. Fire safety door according to claim 16, characterised in that the hook (18) is connected via a push rod (20) to the slider release (19).

Images