EP2878915B1 - Pyrotechnic actuator unlocking - Google Patents

Description

The invention relates to a device for unlocking an entry or exit device, in particular a land, water or aircraft, comprising a piston housing and a piston rod, of which at least one component is movably mounted relative to the other component.

From the DE 10 2009 022 533 A1 a device is disclosed for the defined, quick and commanded separation of structural parts of a door and a wall as well as to solve entire structural systems from each other.

In the GB1113563A a device according to the preamble of claim 1 is disclosed.

Either in the retaining tab of a door or wall or in a structural system (e.g., pilot's or passenger's cockpit) or at its anchorage point, at least one force element is attached to the vehicle frame.

A bolt of the power element may be pulled into or confined within the housing of the power element at a predetermined time.

All used force elements and separating screws can be triggered individually, in groups, one after the other or synchronously with each other.

Known emergency exit devices often prove to be disadvantageous because the respective unlocking mechanism and the opening mechanism are separate from each other elaborately designed mechanisms.

Emergency situations, however, require that the unlocking and opening mechanisms can be actuated as quickly as possible, but at the same time safely and reliably, in order not to lose time when the entry or exit device is opened, and to be able to access the occupant of the vehicle as quickly as possible. Known unlocking and opening mechanisms have the disadvantage that several mechanisms have to be actuated successively to open the entry and exit means, so that valuable time elapses.

The invention therefore has the object to provide a device for unlocking an entry and / or exit device, in which the unlocking and the opening mechanism summarized constructive. are.

To this task is to provide a device for unlocking available, in which the unlocking and opening mechanism integrated, thereby facilitating the operation is possible.

A second object is to provide an unlocking device which is easier and, above all, faster to reach and operate for a rescuer, but at the same time functions safely and reliably.

Another object is to provide a device for unlocking an entry or exit device, which has only a few components and thus is inexpensive to manufacture.

The object is achieved by a device having the features of claim 1. Insofar as the description of the invention is directed to an entry or exit device or an entry / exit device, an entry and / or exit device is meant.

For this purpose, the locking device during the initial displacement of the movable component (piston housing / piston rod) (preferably non-positively) connected to the device for unlocking, wherein the guide means of the subsequent further movement of the movable component after unlocking the locking device forms a contact with the movable component.

It is particularly advantageous if the device for unlocking is also designed as a pyrotechnic actuator, which has a pyrotechnic propellant charge.

In the inventive device for unlocking a locking device of an entry and / or exit device of the unlocking and opening mechanism are integrated. In order to the operation is facilitated, since only actuates the device for unlocking, advantageously the pyrotechnic actuator triggered, must be, so that the integration of the system is simplified.

The entry and exit means may e.g. a hatch, a flap, an emergency exit door or a door. It is a device for closing or opening an opening in a wall, in a passage or in an entrance.

The entry and exit device may be provided with a lock and demarcate the space from other rooms or against the outside environment.

The entry / exit device can serve the optical design, the heat protection, the sound insulation and the fulfillment of other safety regulations or requirements. These can be exemplary and in no way exclusively smoke protection, radiation protection, fire protection and mechanical safety.

The entry / exit device may have additional deposits in its door leaf. In addition, additional seals between the door leaf and the frame of the entry / exit device are conceivable.

By way of example and in no way exclusively, the entry / exit device can have standard dimensions or be a soundproof door, a security door, a fire door or a smoke protection door.

The entry / exit device can also be an anti-burglary door, a radiation protection door, a panic door or a wicket door.

Conceivable is the use in the operation of door or window opening systems or in aviation to open emergency exits.

The entry / exit device may further be designed as a sliding door, as a sliding door, as a trap door, as a revolving door, as a hinged door, or as a swing door. Simplifying and in no way exclusively is assumed in the following from a flap.

In addition, the unlocking device according to the invention can also be used at other locations in motor vehicle technology, for example on rollover bars or in military technology.

Furthermore, for the sake of simplicity, it is assumed that the entry / exit device is a flap, in particular an emergency exit flap.

The term vehicle is understood to mean any means of transport on land, water or in the air, even if they are used stationary, such as e.g. Motor vehicles, ships, submarines, airplanes, rockets, orbit stations, diving stations and elevators. The flap is at its one end e.g. pivoted on the body of the vehicle.

With its other end, the flap is held secured against inadvertent opening by a locking device. The holder may in particular be a catch or any conventional locking mechanism.

According to the invention, the flap is locked by the locking device. In an emergency, the person or person to be rescued must unlock the locking device and then open the flap so that the occupant can exit the vehicle through the flap. The locking device has its own closing and opening mechanisms.

The locking device holds the flap in its closed position relative to the vehicle.

It is an actuator, in particular a pyrotechnic actuator, provided for unlocking and opening the flap of the land, water or aircraft.

The flap is locked by a locking device, in particular a pawl. But as a locking device are also bolts, slides, latches, rockers or other locking effecting components, regardless of whether mechanical or magnetic, electro-magnetic or acting in another way into consideration.

The device for unlocking the entry or exit device (flap) preferably comprises a piston housing and a piston rod. The piston housing can be designed in particular as a pressure tube. Furthermore, the device can be provided with suitable connections.

Instead of a piston housing and a piston rod arranged therein, this component can also be constructed such that it is designed as an outer piston and inner piston. The function of the piston rod would be taken over by the inner piston in this case. Similarly, an oppression multistage piston is conceivable.

For reasons of simplification of the illustration, it is assumed below of the design of the piston housing with a piston rod arranged therein.

In the embodiment as a pyrotechnic actuator, the device preferably comprises compressed gas, the amount of which preferably determines a preset internal pressure. The pressure in this case preferably acts on the cross-sectional area of the piston rod, from which a force acts in the extension direction.

The pyrotechnic actuator advantageously comprises a piston housing in the form of a cylindrical sleeve with a movable piston. Furthermore, a lighter is present, as well as a closure piece. Depending on the required power additional fuel, especially gas, can be added. After the electrical release via - not shown - electrical connections is generated by the pyrotechnic propellant charge sufficient gas to release the secured piston and move it to the desired position.

The piston housing may be provided with an overflow for damping and guidance. The push-out force can be precisely determined by the appropriate choice of the filling pressure within the physical limits.

Together with an overflow opening for damping and a suitable damping element can be installed.

The overall device is preferably protected against moisture and corrosion, so that the function can be retrieved at any time.

The gas may be any suitable substance.

The piston rod extends along the longitudinal axis of the piston housing in the interior of the piston housing.

The piston housing is a component of the device for unlocking the entry / exit device. The other component is the piston rod.

At least one of said components (piston housing) is movably mounted relative to the other component (piston rod). But it is also conceivable that both components are movable to each other.

The respective movable component (piston housing or piston rod) acts on the locking device and is preferably guided in a guide groove of a guide device.

As far as in the context of the present invention is spoken of a piston rod, this may have any shape of a suitable movable piston.

In a first phase of the action on the locking device, the respective movable component is non-positively connected to the locking device.

In a second phase of the action of the respective movable component on the locking device, the locking device can be transferred from a closed position into an open position and releases the entry or exit device in the open position.

If the piston housing is the movable component, then in the first phase the piston housing is non-positively connected with the locking device.

The guide device, in particular the actuating yoke of the entry or exit device, comes in the second phase of the further displacement of each movable component (piston housing or piston rod) with the movable component in frictional contact. The further displacement of the respective movable component thereby causes the unlocking of the locking device (for example, the pawl). This makes it possible to open the entry or exit device.

As far as in the present invention of a frictional connection or a non-positive contact is mentioned, it is also conceivable that this contact is made possible by a positive connection. The positive connection can be, for example, that one of the aforementioned components overlaps the other.

It is also conceivable that instead of the aforementioned locking device, in particular the pawl, a different type of locking is used, which holds the entry and exit device in its initial position. The locking of the device according to the invention for unlocking the entry or exit device is canceled as a result of the relative movement of one component (piston / piston rod) to the other component (piston rod / piston).

In the case in which the piston rod is the movable component, the piston rod extends in the guide groove of the guide device, in particular of the actuating yoke.

The piston rod is preferably provided with a stop plate, which produces the non-positive connection between the piston rod and the guide device.

In the second phase of the action of the movable component (piston rod) on the locking device, the stop plate of the piston rod comes into contact with the guide device. The guide device is preferably arranged on the entry or exit device (flap), preferably fastened. In this way, a frictional connection between the movable component (here: piston rod) and the entry or exit device.

As a result, the locking device is transferred from a closed position to an open position in the second phase of the action of the movable component (here: piston rod) on the locking device. The entry and exit device opens and allows the occupants to leave the vehicle.

At the end of this second phase or after its completion, the entry and / or exit device can preferably run approximately parallel to the component of the vehicle whose area is to be opened. However, a substantially parallel arrangement is not absolutely necessary, since the entry and / or exit device can preferably be positioned by a linkage in any position.

The end position of the entry and / or exit device is preferably achieved automatically by the pyrotechnic actuator.

The piston housing has on its front side a housing pin, which is insertable for guiding the piston housing into the guide groove of the guide device (actuating yoke).

During the first phase of the action of the movable component (piston housing or piston rod) on the locking device of the housing pin of the piston housing or the piston rod during the initial displacement of the piston housing and the piston rod in the guide groove of the actuating yoke over a defined range are axially displaceable.

The component which is not movable relies on a fixed point, e.g. a rigid frame of the vehicle.

The housing pin of the piston housing or the piston rod is displaceable axially in the guide groove of the guide device (actuating yoke) depending on which component is movably mounted relative to the other component. The shift takes place until the housing pin of the piston housing or the stop plate of the piston rod comes into contact with the guide device.

Only then is a frictional connection between the respective movable component (piston or piston rod) and the entry or exit device available.

The movable component moves relative to the immovable component and acts to open the entry and exit means on the locking device.

The locking device, in particular the pawl is fixed by a closing and / or an opening mechanism in its closed position (basic position) to prevent inadvertent release of the locking device during normal operation.

It is conceivable that the fixing of the locking device is effected by a shear pin, which is sheared off during the opening operation, under load of the locking device (pawl) by the movable component.

In addition or as an alternative to the shear pin, a spring can also be used to fix the locking device. The spring force is bridged by the force of the movable component (piston or piston rod).

In a further embodiment of the invention, a damping device is arranged in the piston housing. The damping device reduces the axial velocity of the piston rod in the interior of the piston housing. The damping device can also be arranged outside the piston.

Inside the piston housing, a working space is provided by a pyrotechnic actuator acts. The pyrotechnic actuator is used to trigger the relative movement of one component (piston housing / piston rod) to the other component (piston rod / piston housing).

Under pyrotechnics in this context is understood to mean a mostly explosive combustion in the working space. Here, a pyrotechnic composition comprising an oxygen dispenser is ignited with a fuel. The inflammation can e.g. done electrically. The pyrotechnic composition may be disposed in a wrapping of cardboard, metal, plastic or the like.

The pyrotechnic actuator causes forming inside the working space by igniting the fuel expanding gas. The gas acts on a e.g. At the upper end of the piston rod arranged piston and pushes the piston with its piston rod in the interior of the piston housing away from the working space z. B. down.

If the piston housing is the movable component, the gas expanding in the working chamber causes the piston housing to be displaced axially relative to the piston rod.

The pyrotechnic actuator allows the use of the device for unlocking an entry or exit device in different applications. The unlocking device is suitable for vehicles of any kind on land, in the water and in the air.

The pyrotechnic actuator proves to be extremely advantageous because it has a short response time and is very reliable.

If the piston housing is the movable component, the gas expanding on account of the ignition of the pyrotechnic propellant charge in the working space displaces the piston housing relative to the piston rod. In contrast, if a movable piston rod is provided, the gas causes the displacement of the piston rod relative to the piston housing.

Depending on the amount of gas or the cross-sectional area of the piston housing, different sized forces and piston speeds can be achieved.

According to another embodiment of the invention, the piston housing is rotatable or displaceable relative to the piston rod.

If the piston rod is designed as a movable component, the piston rod can be rotated or displaced relative to the piston.

Fig. 1

Die Vorrichtung zur Entriegelung einer Ein- bzw. Ausstiegseinrichtung mit der Ein- bzw. Ausstiegseinrichtung in Schließstellung,

Fig. 2

die Vorrichtung mit entriegelter Ein- bzw. Ausstiegseinrichtung,

Fig. 3

eine komplett geöffnete Ein- bzw. Ausstiegseinrichtung und darunter angeordnet eine Verriegelungseinrichtung,

Fig. 4

eine Ein- bzw. Ausstiegseinrichtung mit Dämpfungseinrichtung und

Fig. 5

eine Ein- bzw. Ausstiegseinrichtung in umgedrehter Anordnung.

The invention will be explained with reference to the embodiments illustrated in the drawings. Hereby show:

Fig. 1

The device for unlocking an entry or exit device with the entry or exit device in the closed position,

Fig. 2

the device with unlocked entry and exit device,

Fig. 3

a completely opened entry and exit means and arranged thereunder a locking device,

Fig. 4

an entry or exit device with damping device and

Fig. 5

an entry or exit device in an inverted arrangement.

Fig. 1 shows a schematic section through a device 15 for opening a locked with a locking device 2 entry or exit device 3 (flap). In a piston housing 4 extends a piston rod 6, on whose the locking device 2 facing the end of a piston 5 is arranged.

In the region of the piston 5, a working space 16 can be seen in the piston housing 4, which is delimited by the piston 5 from the rest of the piston housing 4.

In the area of the working space 16, a pyrotechnic propellant charge 7 is arranged, on which in addition an ignition device is shown.

At the end of the piston housing 4, which faces the locking device 2, the piston housing 4 comprises a housing pin 9, which is axially displaceable together with the piston housing 4. The housing pin 9 extends in the groove 10 of the guide device. 8

The locking device 2, in particular the pawl is held by a fixing 11 in a closed position 17. Instead of or in addition to the fixation 11, a spring 12 can also be used.

The piston housing 4 is in Fig. 1 hinged at its end remote from the locking device 2 end to a vehicle 18.

I the representation of Fig. 1 the entry or exit device 3 is closed and locked in a catch 21 of the locking device 2. The piston rod 6 is retracted so far into the piston housing 4 that between the piston 5 and the end face 19 of the piston housing 4 only one Working space 16 remains. In the working space 16, the propellant charge 7 protrudes.

The housing pin 9 extends in the axial extension of the piston rod 6 through the guide groove 10 of the guide device 8 (actuating yoke).

Fig. 2 shows a schematic section through the device 15 with unlocked locking device 2 (pawl) and the entry and exit device 3 in unlocked representation.

The Fig. 2 shows an ignited pyrotechnic propellant charge 7 in the working space 16. The generated in the working space 16 gas 20 moves the piston housing 4 relative to the piston rod 6 in the direction of the locking device 2. The housing pin 9 extends axially in the guide groove 10 of the guide device 8 in the second phase of the action the movable component 4 on the locking device. 2

By the generated gas 20, the piston housing 4 is moved relative to the piston 5 in the direction of the locking device 2. The end face 19 of the piston housing 4 is in non-positive connection with the guide device 8 (actuating yoke).

The locking device 2 is shown in the second phase of the action of the piston housing 4 on the locking device 2 and rotated by the path of the initial axial displacement of the housing pin 9.

This shows the unlocking of the locking device 2 with respect to the entry and exit device 3. The entry and exit device 3 is open, so that the occupants (not shown) can leave the vehicle 18.

The shearing off of a fixation 11 (shear pin) is in Fig. 2 not shown.

Fig. 3 shows the device 15 for unlocking the entry or exit device 3 with fully open flap 3. The piston rod 6 is moved out with its piston 5 maximum of the piston housing 4.

The entry and exit device (flap) 3 is flat on the vehicle 18 at.

The piston housing 4 is with its end face 19 in non-positive contact with the guide means (Betätigungsjoch) 8. The housing pin 9 extends in the guide groove 10 of Guiding device 8.

Below the device 15, the locking device 2 is shown with a catch 21 for receiving the lower edge of the entry and exit device (flap). 3

At the front end of the locking device 2, the fixation 11 is shown. At the rear end of the locking device 2, the spring 12 is shown, which holds the locking device 2 in approximately the horizontal position.

Fig. 4 corresponds approximately to the representation of Fig. 1 , with the difference that at the end facing away from the housing pin 9 in the interior of the piston housing 4, a damping device 14 is arranged.

Fig. 5 shows a device for unlocking an entry or exit device 3, in which the piston housing 4 is shown in a rotated arrangement.

The piston housing 4 is articulated with its end face 19 on the vehicle 18. Between the end face 19 and the piston 5, the working space 16 can be seen in the piston housing 4, into which the propellant charge 7 protrudes.

At the side facing away from the working space 16 side, the piston rod 6 projects out of the piston housing 4.

In the region of the lower end of the piston housing 4, the piston rod 6 has a stop plate 13. Below the stop plate 13, the piston rod 6 is guided in the guide groove 10 of the guide device 8.

The presentation of the Fig. 5 shows the device 15 for unlocking an entry or exit device 3 before triggering the first phase of the action of the movable component (here: piston rod 6).

Fig. 2 shows the device 15 for unlocking an entry or exit device 3 in the second phase 22 of the action of the movable component (here: piston housing 4) on the locking device. 2

The gas 20 is ignited in the working space 16 and expanded.

The piston housing 4 (here: the movable component) is displaced by the expanding gas 20 in the direction of the guide device 8 and abuts with its end face 19 on the guide device 8.

By the action of the movable component (here: piston housing 4), the locking device 2 is transferred from a closed position 17 into an open position. As a result, the entry and exit device is released.

references

1.

subject to change

Second

locking device

Third

Entry and exit device

4th

piston housing

5th

piston

6th

piston rod

7th

propellant

8th.

Guide device (actuating yoke)

9th

housing pin

10th

guide

11th

fixation

12th

feather

13th

stop plate

14th

attenuator

15th

contraption

16th

working space

17th

Closed position of the locking device

18th

vehicle

19th

Front side piston housing

20th

gas

21st

Latch locking device

22nd

second phase

Claims (14)

1. Device for unlocking a locking device (2) comprising an entrance and/or exist device (3), in particular for land, water or aircraft, comprising a piston housing (4) and a piston rod (6), of which at least one component (4; 6) is movably mounted relative to the other component (4; 6), as well as a guiding device (8), wherein the respectively movable component (4; 6) is connected to the locking device (2) and the guiding device (8) makes contact with the movable component (4; 6) upon subsequent further movement of the movable component (4; 6) after the locking device (2) has been unlocked, characterized in that the guiding device (8) is hinged to the entrance and/or exit device (3).
2. Device according to claim 1, characterized in that the unlocking device further comprises a pyrotechnic actuator (1) with a pyrotechnic propellant charge (7).
3. Device according to claim 1, characterized in that the piston housing (4) has a housing pin (9) on its front face (19) for guidance in the guiding device (8).
4. Device according to claim 1, characterized in that the guiding device (8) for guiding the piston rod (6) or the piston housing (4) is an actuating yoke (8).
5. Device according to claim 1, characterized in that the movable component (4; 6) is connected to the locking device (2) in a force-fit manner during a first phase of impact on the locking device (2).
6. Device according to claim 1, characterized in that the locking device (2) can be changed from a closed position (17) to an open position and releases the entrance and/or exist device (3) during a second phase (22) of impact of the movable component (4; 6) on the locking device (2).
7. Device according to claim 1, characterized in that the locking device (2) is a retaining pawl.
8. Device according to claim 1, characterized in that the locking device (2) has a closing mechanism and/or an opening mechanism.
9. Device according to claim 1, characterized in that the piston housing (4) is twistable and/or movable relative to the piston rod (6).
10. Device according to claim 1, characterized in that the piston rod (6) is twistable and/or movable relative to piston housing (4).
11. Device according to claim 1, characterized in that the piston rod (6) has a stop plate (13).
12. Device according to claim 1, characterized in that a working space (16) within which a pyrotechnic actuator (1) is operating is disposed inside the piston housing (4) for causing the movement of one component (4; 6) relative to the other component (6; 4).
13. Device according to claim 1, characterized in that a damping device (14) is disposed inside the piston housing (4).
14. Device according to claim 1, characterized in that the entrance and/or exist device (3) is more particularly a door or a hatch or a flap.

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