DE29820761U1 - Device for separating people - Google Patents

Description

Myriam Nieto-Huber

Peter Huber

Alex Huber

Device for isolating people

The invention relates to a device for isolating people when entering a room located behind a partition wall with a door, which secures a walk-through cabin against entry and exit with a fixed shield widening the front edge by covering or uncovering this cabin depending on the pivoting position of the door leaf. The invention also relates to a method for operating such a device.

Today's service and industrial companies are extremely sensitive to disruptions of any kind due to the high level of technology and the resulting increased dependence on IT systems. At the same time, there is a growing hostility towards technology and an increase in crime. It is therefore becoming increasingly necessary to protect employees and companies from criminal acts such as sabotage, robbery or acts of terrorism. In order to be able to use the capacity of the production plants better, the economy demands flexible working hours and uses a minimum number of staff to operate the machines. It is therefore becoming more and more common for entire production plants to be in operation without protection against attacks such as sabotage and mischief. Working hours in administrative and service companies are also extending to the times required by the market - in the case of global operations, this means around the clock.

This means that more and more employees have to spend time alone in different parts of the company at different times, and the rooms or at least the entrances have to be monitored around the clock. For cost reasons, this is not possible due to the staffing levels, and autonomous and effective access control systems are being sought.

Because a normal door prevents anyone from entering once it is opened, locks are required. Locks available today are complex and therefore only available at prices that are not suitable for such entrances.

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are intolerable. They usually do not have the resistance required for attempted break-ins and are neither smoke- nor fire-retardant; properties that are generally essential for such entrances because they either lead directly into publicly accessible areas or are located in fire compartments. Another disadvantage is that today's locks take up a lot of space and cannot be adapted to the different needs of day and night operations - often a consistent check of access authorization is only necessary outside of normal operating hours. During normal working hours, when all workstations are occupied, a normal door can be completely sufficient to meet the risks.

The task is solved in a generic device (PCT/CH96/00416 of the applicant) in that a door, which has a cabin installed opposite its front edge and only offers space for one person, closes with its widened front edge during the lock-through process in such a way that the cabin can neither be entered nor exited in a position called the "middle position" and that the door cannot be swung over the outer edge of the cabin on either side when it is in the lock function. The swing-away shield located on the front edge of the door serves to widen the front edge. Locking the door approximately in the middle of the cabin (middle position) ensures that the open door can only be entered in the direction of entry if the person wishing to enter identifies themselves as authorized and can therefore release the lock. This also ensures that unauthorized persons cannot sneak in if the door has been opened by a person exiting.

The disadvantage of this device is that it causes relatively high manufacturing and maintenance costs due to the swing-away shield and the mechanism that swings the shield can cause cumbersome movement and malfunctions.

A fixed sign has disadvantages in that, when mounted on the side of the cabin, it forces the cabin to be moved away from the door by the width of the sign

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and to open the door to the outer edge of the cabin every time. One consequence of this is a drastic narrowing of the passage width if the door is to be opened by 90° to allow emergency exit or the transport of bulky goods.

It is the object of the invention to create a device with which the above-mentioned disadvantages are avoided and to ensure qualitatively adapted access control at different risk times in a cost-effective manner with the least possible disruption to operations and to incoming and outgoing persons.

In the device according to the invention, a fixed shield is mounted on the side of the door leaf facing away from the cabin. If the locking mechanism is also mounted on this side, significant advantages over known devices arise.

Due to the absence of a shield pivoting mechanism, the catcher is significantly smaller, which means that lighter doors can be fitted and the locking part can be made smaller.

The simpler and more compact design means lower manufacturing and assembly costs, which means that access points that currently remain unsecured due to costs can finally be controlled.

The cabin can be built directly onto the passage wall, which saves space and results in a large passage width if the door is to be opened to 90°.

According to a further development of the invention, retainers ensure that the door can only swing past the middle position in a controlled manner - after the person entering has been authorized to do so - and that the door can only swing past the outer cabin wall if this is permitted by a specially authorized person (e.g. by using a key). These two swings can also be achieved by removing the entire locking mechanism in an emergency using an emergency pull. If a significant malfunction occurs (e.g. fire

with a power failure), the fire brigade or a service person equipped with a key can mechanically unlock the door from the outside and enter the room.

With a stopper that blocks the door in an almost closed position, a door opener is no longer required. This means that control can be extended to two steps, in that after this stopper has been released, the "middle" stopper must also be activated within a predetermined time (e.g. with a biometric identity check of the person entering) in order to be able to enter. This achieves a level of control that is hard to beat. The "door closed" stopper can also be used to block the door in an almost closed position - namely when the door is opened in an unauthorized manner. This enables an intervention before the door can be entered.

In order to increase security against sabotage, in a further development of the invention, the pushing away of the retainers from the unsafe side is prevented by a locking bar. This locking bar is pulled away before the respective locking mechanism is released.

According to a further development of the invention, the "middle" and "end" stops are permanently locked. They are held in this position by a spring and are pulled back by a magnet, for example, to unlock. This arrangement allows the stops to be pulled away in an emergency and secured in this position with an automatically latching locking lever. This release function can also be carried out using the pull switch, which can be operated from the inside or outside by people who have the corresponding key. If the cabin is to be arranged on the inside, i.e. on the safe side, the stops are not designed as hooks but as bluntly flattened counter bolts. Otherwise, the mechanics remain the same.

According to a further development of the invention, the operating states "normal door function" and "lock function" can be controlled electrically, e.g. via a clock

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This allows each company to use the entrance individually as a normal door or as a lock at the times specified by it in a program. By evaluating an alarm signal from a fire alarm system, the switch to a normal door and thus the release as an emergency exit can be achieved.

Further advantageous features emerge from the dependent patent claims, the following description and the drawings. An embodiment of the invention is explained in more detail below with reference to the drawing.

Show it:

Figure 1 the different phases of the device during passage

one person
Figures 2 to 4 are schematic sectional views through the inventive

Contraption.

Figure 1 shows the passage of a person in lock operation and the passage of a group of people in the normal door position. In lock operation, a person authorized to enter enters the cabin 20 arranged on the outside in a first phase. This person can only open the door leaf 5 to the middle position. If the person has identified themselves as authorized to enter, the middle position is unlocked and the door leaf 5 can be moved to the locked end position (phase 3). In this position, entry to the inside is possible. After the person has passed through, the door is closed again (phase 4). In the normal door position (phase 5), the door can be opened and closed like a normal door. Since no mechanics or electronics have to be located inside the cabin 20, the cabin 20 can be freely designed. However, it must prevent entry into the roof area and the entrance opening must only be wide enough so that nobody can slip into the cabin 20 when the door leaf 5 is in the middle position.

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Figure 2 shows the device with the door closed. Behind a partition wall W there is a room I to be protected. Access to this room is through a passage D into which a door 5 is inserted. Next to the door 5, on the unsecured side A of the partition wall W, a walk-through cabin 20 is permanently mounted. This has an open side 24 which faces the door 5. This walk-through cabin 20 is built in such a way that only one person can comfortably stay in it. It is not mandatory that only one person is allowed to stay in the cabin 20, although this is often achieved by means of chicaneries. For access control, an input device 1 is arranged in the cabin 20, on which, for example, a code can be keyed in, an access card swiped or an impulse can be given from the protected side. The door leaf 5 is banded like a normal door and has a free front edge and door handle 2.

On the inside I of the door leaf 5, a plate 30 and a catcher box 8 with the catcher 9 are arranged. This catcher 9 works together with the abutments 26, 27 and 28, which are attached to the door lintel inside the locking part 10.

The operation of the device is explained below using Figures 2 to 4.

The door closed in Figure 2 can be opened with the door handle 2 into the middle position shown in Figure 3, where the catcher 9 abuts the "middle" abutment 26. If this is desired by the user, the "door closed" abutment 28 must first be unlocked because it holds the catcher 9. This is done by giving an impulse to the "door closed" magnet 11, which initially pulls the corresponding locking bar 15 away.

The door in the middle position in Figure 3 can now be closed again to leave the cabin in the exit direction, but it cannot be opened any further. Only when the person has identified themselves as authorized does an impulse activate the "middle" magnet 12, which in turn first swings away the locking bar 15 and then the "middle" stop 26, which is designed here as a hook. This allows the door 5 to be brought to the end position, as shown in Figure^, where the catch 9 on the "end" stop 27

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The way into the protected room is now clear for the person in the cabin. The door is now returned to its original position with the door closed from the inside or from the outside (Figure 2). Exiting the room is done in the same way from the other side, whereby either the "middle" stop 26 must be released as when entering or a room detector installed in the cabin must signal an unoccupied cabin.

In order to be able to achieve the normal door position shown in Fig. 5, which is shown here in full opening, all the stops 26, 27, 28 must be released and pulled out of the movement range of the catcher 9. This is done by the magnets "door closed" 11, "middle" 12 and "end" 13 first pulling away the corresponding locking bar 15 and then the associated stops 26, 27 and 28 and the normal door lock 29 fixing this position. This very advantageous changeover from lock function to normal door function can be achieved via a local switch position, remote control or a timer.

In emergencies (in the event of a fire or power failure), anyone can switch to normal door operation by operating the emergency pull 17 located within the secured room. This causes all locking bars 15 and all stops 26, 27, 28 to be pulled back and this position to be fixed by the normal door lock 29. Because there is often only one door leading to a floor, a lock placed in this way must be able to be opened mechanically from the outside if there is a fire, the power supply fails or the lock has a fault that can only be repaired from the inside. This is done here by opening the door at least far enough to reach in by hand and turn the changeover pull switch 16. The effect is identical to pulling the emergency pull. However, if this function is desired, locking in the "door closed" position must be dispensed with.

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Claims (11)

Cl* .Protection claims 1. Device for isolating people when entering an area located behind a partition wall (W) through a passage (D) in the partition wall (W), in which passage (D) a door leaf (5) can be pivoted by means of a pivot bearing (18) and a cabin (20) is arranged, which cabin (20) has three closed walls (21, 22, 23) and an open side (24), which opening is covered or opened by a shield (30) depending on the door position, wherein the cabin can neither be entered nor exited when the door leaf is in the middle position and the person in it can only enter the area located behind the partition wall if they were able to remove the middle position lock by previously identifying themselves as authorized, characterized in that the shield (30) covering the open side (24) of the cabin is arranged in a fixed position on the side of the door opposite the cabin. 2. Device according to claim 1, characterized in that the locking part (10) is mounted in the door lintel and the catcher (9) is mounted on the inside (I) of the door leaf (5). 3. Device according to one of claims 1 to 3, characterized in that the locking part (10) has abutments. 4. Device according to claim 3, characterized in that the locking part (10) with a "middle" stop (26) prevents the door from swinging beyond the middle position with a "end" stop (27) prevents the door from swinging beyond the end position in an uncontrolled manner, and in special cases with a "door closed" stop (28) holds the door in an almost closed position. 5. Device according to one of claims 1 to 4, characterized in that a locking bar (15) prevents the pushing away of the abutments "middle" (26), "end" (27) de" (27) and "door closed" (28) are prevented from the outside (A) and that these are released when the abutments (26, 27, 28) are pulled away. 6. Device according to one of claims 1 to 5, characterized in that when the "end" abutment (27) is released, the "middle" abutment (26) is also forced out of the locking position by means of a driver. 7. Device according to one of claims 1 to 4, characterized in that the middle position (Fig. 3) is permanently locked and the middle position (Fig. 3) is unlocked either when entering the area to be controlled (I) after access authorization has been established and/or when leaving the controlled area (I) before each exit. 8. Device according to one of claims 1 to 4, characterized in that the end position (Fig. 4) is permanently locked and is unlocked in an emergency or for the transport of goods or for the "normal door" operating mode. , 9. Device according to one of claims 1 to 8, characterized in that the locking mechanisms middle position (Fig. 3), end position (Fig. 4) and "door closed" (Fig. 2) can be electrically (12, 13) released and held with the normal door lock (29) and reactivated again. 10. Device according to one of claims 1 to 9, characterized in that the locking mechanisms middle position (Fig. 3), end position (Fig. 4) and "door closed" (Fig. 2) can be released or reactivated manually via an emergency pull (17) or a changeover pull switch (16). 11. Device according to claim 1, characterized in that for switching between lock and normal operation manually and electrically with the
A key is provided for the changeover switch (16) on the unsafe side (A).