EP2094923B1 - Locking device for sliding doors of aircraft, especially of helicopters - Google Patents

Abstract

A locking device having a door catch system for helicopter doors, which are embodied as sliding doors, which are to be additionally moved (flush-fitted) into the closed position at right angles to the plane of the door opening in response to their closing movement, consisting of a catch (15a), which is associated with the latch (13) and which is in active connected therewith, by which catch (15a) the sliding door is “caught” directly in front of its locked position in response to a manual closing process until the sliding door has been transferred into its final closed position via the latch (13).

Description

The invention relates to a locking device for sliding doors of aircraft, in particular of helicopters according to the preamble of claim 1.

Such serving for the approach of the pilot or for boarding passengers sliding doors are, similar to land vehicles, laterally guided laterally along the outer surface of the fuselage structure over lateral guide rails to the height of the door opening and then suitably bent ends of the guide rails in the door opening drawn. For this purpose, the sliding door is to be moved by hand and also to lock in the closed position by hand. In contrast to land vehicles, in the case of aircraft, the doors provided there within the openings provided in the fuselage structure must be securely entrenched and closed. The closure of such sliding doors therefore requires three consecutive manual operations, namely closing the door, holding the door in this state and then locking it. For this purpose, at least two door locks are connected to the door structure, the tumblers cooperating with fastened to the hull structure fittings can be actuated together via a suitable handle having a linkage. It is therefore necessary when closing such doors for the last two operations special skill, since the respective door is to hold firmly when locking in the closed position. If the door has not been pushed closed enough, it can happen that one or the other lock is "in the void" and therefore the affected door is not properly closed. As a rule, both hands of the person concerned are therefore required for closing the door.

The previously known door locks for such sliding doors are obviously user-friendly. Although you have to open the door while standing in front of the helicopter, enough space and freedom of movement for the opening and closing of the door and can perform a drag, hold, press and / or rotate without much difficulty. However, this changes immediately after boarding and seating in the helicopter; due to the limited ergonomics and the fact that z. B. pilot or passenger seats are designed depending on body size forward and upward adjustable, then the operation of such doors is made much more difficult.

The doors of a helicopter make the first contact with the aircraft and thus determine the first impression to the respective user. There is therefore a requirement that doors are self-explanatory of their operability and function and do not already constitute the first manual and / or technical obstacle when entering the helicopter. The functions of the door lock should also be understandable and logical without additional signs and instructions for everyone.

A generic door locking system for a helicopter door with a translationally movable locking system is from the DE 3 707 324 A1 known. A disadvantage here proves to be that the helicopter door is locked when locking in the closed position, so that both hands are required to close the door.

From a door closing device for motor vehicles concerned DE 9 311 255 U1 a so-called flap door is known, which assumes a pre-locked position during a closing movement and before reaching the final closed position.

The invention is therefore an object of the invention to provide a new door lock device that is better than previously operated while maintaining the security lock.

Starting from a run guided by rails translationally operable sliding door with at least one detent engaging behind, designed as a rack lock latch, this object is achieved according to the invention by the characterizing features of claim 1.

Further features of the invention will become apparent from the dependent claims.

The new door lock is surprisingly advantageous.
With the help of the catch catch according to the invention, which is in geared engagement with the latch, namely the affected, designed as a sliding door door in the position in which the latch is only in the catch, "caught", so alone by further moving the latch in the firing position, the door can be moved to its final closed position, without the need for holding / tightening the door in the manual opening provided in the fuselage structure. In the transfer of the latch in its final closed position by means of said handle is released via the geared connection between catch and latch, which is inventively designed as a sliding wedge, the catch for a new closing operation.

The inventive design of the door lock facilitates the safe closing of such sliding doors considerably and therefore significantly increases the ease of use for the crew of a helicopter. Also, the ergonomic requirements for the flight crew during flight of the helicopter with open sliding doors for sliding the door in flight are significantly reduced.

The invention is described below with reference to an embodiment shown more or less schematically in the drawing.

Fig. 1

eine isometrische Ansicht einer für eine Schiebetür eines Hubschraubers bestimmte Verriegelungsvorrichtung gemäß der Erfindung in der Fangstellung,

Fig. 2

die Verriegelungsvorrichtung nach Fig. 1 in der Entriegelungsstellung,

Fig. 3

eine Seitenansicht der mit der Schließfalle der Verriegelungsvorrichtung nach Fig. 1 verbundenen Fangfalle im Zusammenwirken mit einem Türfangbeschlag und

Fig. 4

der Türfangbeschlag in isometrischer Einzelansicht

Show it:

Fig. 1

an isometric view of a designated for a sliding door of a helicopter locking device according to the invention in the tuck position,

Fig. 2

the locking device after Fig. 1 in the unlocked position,

Fig. 3

a side view of the with the latch of the locking device according to Fig. 1 associated catch trap in conjunction with a door catch fitting and

Fig. 4

the door catch fitting in isometric single view

From a locking device for the sliding door, not shown, of an aircraft, also not shown, in particular a helicopter is in the Fig. 1 to 4 only one of the locking device 10 fixedly connected to the sliding door is shown. The locking devices are operated together via a likewise not shown a hand lever exhibiting linkage and each cooperate with a fixed to the fuselage structure of the aircraft a detent 11 having fitting 12 together.

With the structure of the sliding door, not shown, a rack bolt 26 is connected, at the effective end of which is mounted on a spring 15 acted upon in the axial direction by a spring 15 pin 16, the sliding door can be locked. For this purpose, the roller 16 engages behind the detent 11 of the attached to the hull structure also not shown fitting 12, which is located on the rear frame profile of the sliding door guide, also not shown. As a catch, the free end 15a of the roller 16 overlying pin 15 of the serves Fig. 3 apparent rack bolt 26.

In the region of the free end 15a of the pin 15 of the rack bolt 26 of the laterally spaced from the fuselage structure guided by guide rails sliding door is attached to the fuselage structure on the rear door frame profile door catch fitting 20. This includes a spring 21 mounted in a base sliding block 22 with a catch bevel 23rd on its surface and an opening bevel 24 which is associated with the side facing away from the pin 15 side surface of the sliding block; see. FIGS. 3 and 4 , About a spring of the sliding block 22 is held in contact with the pin 15 facing side surface 27 of the door catch fitting.

Since the spring-loaded pin 14 of the rack bolt 26 is mounted longitudinally movable in its axial direction, this can, if the door catch fitting 20 is fixed with respect to the pin 15a aligned to the fuselage structure intended, with its free end 15 when sliding the sliding door by hand the catch bevel 23 of the sliding block 22 move. As mentioned, in this case the sliding door is moved via its guide rails in the region of the door opening in the fuselage structure against the door opening. As a result of this movement, therefore, the sliding door gets caught behind the catching slope 23 of the sliding block 22 of the door catch fitting 20. The sliding door is "caught" in this position, so can not move back into the open position due to accelerations or inclinations of the helicopter. The Einstraken and locking the sliding door in the door opening can now be done without locking the sliding door by hand, solely by moving the handle, not shown, of the rod connected to the rack bar 26 linkage in the closed position. In this case, the free end 15 of the pin 15a moves resiliently behind the opening slope 24 of the sliding block 22; see. Fig. 2 ,

When you open the sliding door, so after releasing the rack bolt 26, this is moved in their guide rails out of the door opening. Here, the free end 15a of the pin 15 pushes the sliding block 22 over the opening slope 24 against the force of the spring, not shown, from the guide track the sliding door, so that it is free to move into the open position. After passing through the sliding door, the sliding block 22 resumes its "catching position" as a result of the spring.

LIST OF REFERENCE NUMBERS

10

locking device

11

notch

12

fitting

14

feather

15

pen

15a

free end of 15

16

role

20

Door catch bracket

21

Base

22

slide

23

Fang slope

24

opening slope

26

Rack bars

27

Side surface of the door catch fitting

Claims (4)

1. A door-locking device for sliding doors of helicopters which can be actuated in translational manner and are guided by means of rails, with a rack bar (26) associated with the door structure and a catch (11) associated with the fuselage structure, which catch can be engaged with the rack bar (26) as soon as the rack bar (26) is moved into the closing position by means of a bar linkage which can be manually actuated, in which position the door is pulled into the door opening located in the fuselage structure and is blocked in this position or is unblocked into the released position by movement of the rack bar (26), characterised in that a spring-loaded catch latch (15a) which is in an operative connection with the rack bar (26) via a spring-loaded sliding block (22) is associated with said bar, which latch, before the rack bar (26) becomes effective, can be engaged with said block for the purpose of catching the sliding door by means of the sliding block (22) mounted in a door-check fitting (20), and the catch latch (15a) can be released again by further moving of the sliding door into its final closed position.
2. A door-locking device according to Claim 1, characterised in that the spring-loaded sliding block (22) which serves as a gear connection between the catch latch (15a) and the closing latch (13) [sic] has on its surface facing the catch latch [with] a catch incline (23) and on its side face facing the catch latch (15a) an opening incline (24) and is held by a spring in contact with the side face (27) of the door-check fitting (20) which faces the catch latch (15a).
3. A door-locking device according to Claims 1 and 2, characterised in that the pin (15) of the closing latch (13) which bears the roller (13) [sic] and is mounted in longitudinally movable manner is acted upon by a spring (14) in the axial direction.
4. A door-locking device according to Claims 1 to 3, characterized in that upon opening the sliding door the spring-loaded sliding block (22) can be moved out of the path of movement of the sliding door via the free end (15a) of the pin (15) which acts as a catch latch, which end is in an operative connection with the opening incline (24), and thus the opening movement can be enabled.

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