Cabin door opening position locking mechanism

Abstract

The invention provides a cabin door opening position locking mechanism, and belongs to the field of airplane cabin door design, the cabin door opening position locking mechanism comprises a lock ring support fixed on a door body structure, and a lock ring mounted on the lock ring support; one end of the lock support is fixed on the machine body structure, and the other end of the lock support is provided with a mounting space for mounting the lock hook; the spring bolt is arranged in the mounting space, a locking groove is formed in the spring bolt, and a wedge-shaped face is arranged on the side, facing the lock ring support, of the spring bolt and used for guiding the lock ring to enter the locking groove of the spring bolt; the handle shaft penetrates through the lock support and the spring bolt and is fixedly connected with the spring bolt; the handle is arranged at the end part of the handle shaft and is fixedly connected with the handle shaft; the torsion spring is arranged on the handle shaft in a sleeving mode, located between the spring bolt and the lock support and used for providing elastic force for the spring bolt; wherein the lock support is provided with a stop shaft, and the stop shaft is used for being in contact with the lower surface of the spring bolt when the spring bolt is matched with the lock ring, so that downward unlocking is prevented.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft cabin door locks, and in particular relates to a cabin door open position locking mechanism. Background Art

[0002] For aircraft doors that need to be opened and closed manually, an open position locking mechanism is often required in the open position of the door to lock the door in the open position. For doors that are used occasionally, a simple latch is often used for locking. This method is reliable, but requires two hands to operate, which is inconvenient to use when space is tight. For doors with small inertial loads, door suction is often used for locking, but the locking is not reliable enough. For doors that are used frequently and have large inertial loads, it is necessary to comprehensively consider the convenience of use and the reliability of locking. Summary of the invention

[0003] The purpose of the present application is to provide a hatch open position locking mechanism to solve or alleviate at least one problem in the background technology.

[0004] The technical solution of the present application is: a hatch door open position locking mechanism, comprising:

[0005] A lock ring support fixed on the door body structure, wherein a lock ring is installed on the lock ring support;

[0006] A lock support, one end of which is fixed to the fuselage structure and the other end of which has an installation space for installing a lock hook;

[0007] A locking tongue arranged in the installation space, wherein the locking tongue is provided with a locking groove and has a wedge-shaped surface on the side facing the locking ring support, for guiding the locking ring into the locking groove of the locking tongue;

[0008] A handle shaft passing through the lock support and the lock tongue, wherein the handle shaft is fixedly connected to the lock tongue;

[0009] A handle mounted on the end of the handle shaft, wherein the handle is fixedly connected to the handle shaft;

[0010] A torsion spring sleeved on the handle shaft, the torsion spring is located between the lock tongue and the lock support, and is used to provide elastic force to the lock tongue;

[0011] Wherein, a stop shaft is provided on the lock support, and the stop shaft is used to contact the lower surface of the lock tongue when the lock tongue cooperates with the lock ring to prevent downward unlocking and cooperate with the torsion spring to keep the lock tongue in the locked position.

[0012] In an optional embodiment of the present application, one end of the lock support is fixed to the fuselage structure by bolts with predetermined distribution, and the other side of the lock support is a double-ear structure, and an installation space for the lock tongue is formed between the two ears.

[0013] In an optional implementation manner of the present application, the handle is fastened to the handle shaft via a locking screw.

[0014] In an optional implementation manner of the present application, the material of the torsion spring is 50CrViA.

[0015] In an optional embodiment of the present application, the width of the locking groove is greater than the diameter of the locking ring.

[0016] In an optional embodiment of the present application, the height of the notch on one side of the wedge-shaped surface of the locking groove is lower than the height of the notch on the non-wedge-shaped surface side, so that when the wedge-shaped surface guides the locking ring into the locking groove, the notch on the non-wedge-shaped surface side blocks the locking ring, allowing the locking ring to enter the locking groove.

[0017] In an optional embodiment of the present application, the locking ring is pivotally connected to the locking ring support.

[0018] In an optional embodiment of the present application, a bushing is provided on the locking ring support at the position where the locking ring is installed.

[0019] In an optional implementation manner of the present application, the lock support, lock tongue, handle, handle shaft, lock ring support and stop shaft are all aluminum alloy machined parts.

[0020] In an optional embodiment of the present application, the locking ring is a stainless steel machined part.

[0021] The hatch open position locking mechanism provided in the present application utilizes the principle of the direction of the hatch inertia force hitting the lock mechanism. The hatch can be locked by hitting the lock tongue and can be unlocked by lifting the handle. It is easy to use and has good ergonomics. After the hatch is locked in the open position, the direction of the inertia load is set to the closing direction, and the locking is reliable, taking into account both ergonomics and locking reliability. At the same time, the number of parts is small and the assembly and processability are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0023] Figure 1 This is a schematic diagram of the hatch open position locking mechanism of the present application.

[0024] Figure 2 This is a bottom view of the hatch open position locking mechanism of the present application.

[0025] Figure 3 It is a schematic diagram of the lock tongue in this application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0027] The present application provides a hatch door open position locking mechanism, which can be locked by directly hitting the lock tongue when opening the door, and can be unlocked by lifting the handle when closing the door, taking into account both human-machine efficiency and locking reliability.

[0028] like Figure 1 and Figure 2 As shown, the hatch open position locking mechanism provided in the present application includes: a lock support 1, a lock tongue 2, a handle shaft 3, a handle 4, a torsion spring 5, a lock ring support 6 and a lock ring 7.

[0029] One side of the lock support 1 is fixed to the fuselage structure (not shown) by multiple bolts, and the other side extends out a double-ear structure, and the installation space of the lock tongue 2 is formed between the double-ear structures. Figure 1 In the illustrated embodiment, the lock support 1 is fixed to the fuselage structure by four bolts distributed in a rectangular shape.

[0030] The lock tongue 2 is installed in the installation space of the lock support 1 , the handle shaft 3 passes through the double-ear structure of the lock support 1 and the lock tongue 2 , and the handle shaft 2 is fixedly connected to the lock tongue 2 .

[0031] The handle 4 is mounted at the end of the handle shaft 3, outside the installation space of the lock support 1, and the handle 4 is fixedly connected to the handle shaft 3. In some embodiments of the present application, the handle 4 is fastened to the handle shaft 3 by a locking screw 31.

[0032] The torsion spring 5 is mounted on the handle shaft 3 and is located between the lock support 1 and the lock tongue 2, and is used to provide elastic force to the lock tongue 2 when the lock tongue 2 rotates relative to the lock support 1, so that the lock tongue 2 always maintains the closing direction. In some embodiments of the present application, the material of the torsion spring 5 is 50CrViA.

[0033] The lock ring support 6 is fixedly mounted on the door body structure 8, and the lock ring 7 is mounted on the lock ring support 6. As the hatch door is opened, the lock ring 7 is pressed and locked with the wedge-shaped surface of the end surface of the lock tongue 2.

[0034] In the present application, a stop shaft 12 is provided on the lock support 1, and the stop shaft 12 is used to contact the lower surface of the lock tongue 2 when the lock tongue 2 cooperates with the lock ring 7 to prevent downward unlocking. At the same time, the stop shaft 12 cooperates with the torsion spring 5 to keep the lock tongue 2 in the locked position.

[0035] like Figure 3 The schematic diagram of the lock tongue structure shown in the figure shows that a through hole is provided on the left side of the lock tongue 2 for fixed connection with the handle shaft 3, and a locking groove 21 is provided on the right side of the lock tongue 2 for accommodating the lock ring 7. When the lock tongue 2 cooperates with the lock ring 7, the lock ring 7 enters the locking groove 21.

[0036] In some embodiments of the present application, the width of the locking groove 21 only needs to be slightly larger than the diameter of the locking ring 7 .

[0037] Furthermore, the contact surface of the lock tongue 2 on the side of the lock ring 7 is provided with a wedge surface 22, and the wedge surface 22 extends from the front end of the lock tongue 2 to the direction of the lock groove 21. The lock ring 7 can be guided into the lock groove 21 through the wedge surface 22. In addition, the height of the notch on the wedge surface side of the lock groove 21 is lower than the height of the notch on the non-wedge surface side, so that when the wedge surface 22 guides the lock ring 7 into the lock groove 21, the notch on the non-wedge surface side can block the lock ring 7, so that the lock ring 7 enters the lock groove 21.

[0038] In the present application, the lock ring 7 can be rotatably connected to the lock ring support 6, and the torque of the torsion spring 5 needs to match the rotational inertia of the cabin door and fully consider the human-machine efficiency. Furthermore, a bushing can be provided at the position where the lock ring 7 is installed on the lock ring support 6 to reduce the friction when the lock ring 7 rotates.

[0039] In some embodiments of the present application, the lock support 1, the lock tongue 2, the handle 3, the handle shaft 4, the lock ring support 6 and the stop shaft 12 are all 7050 aluminum alloy machined parts, and the lock ring 7 is a stainless steel machined part. The materials used in the above parts have mature processing technology, high processing reliability, and the size and tolerance of the parts are easy to be guaranteed.

[0040] The working process of the hatch opening position locking mechanism of this application is as follows:

[0041] When the hatch is opened, the lock ring 7 installed on the door structure 8 through the lock ring support 6 squeezes the wedge surface at the front end of the lock tongue 2, causing the lock tongue 2 to rotate upward, and the lock ring 7 enters the lock groove 21 of the lock tongue 2. At this time, the end surface of the lock groove 21 of the lock tongue 2 is subjected to the impact force backward and downward, and the locking is completed by the stop shaft 12 installed on the lock support 1;

[0042] When the hatch generates forward and upward inertial loads, the forward load is transmitted from the lock tongue 2 to the lock support 1 through the lock shaft 3, and the upward load is offset by the elastic force generated by the torsion spring 5;

[0043] When the door needs to be unlocked, the handle 4 is lifted upward to overcome the elastic force generated by the torsion spring 5, and the lock tongue 2 is rotated upward to complete the unlocking.

[0044] The hatch open position locking mechanism provided in the present application utilizes the principle of the direction of the hatch inertia force hitting the lock mechanism. The hatch can be locked by hitting the lock tongue and can be unlocked by lifting the handle. It is easy to use and has good ergonomics. After the hatch is locked in the open position, the direction of the inertia load is set to the closing direction, and the locking is reliable, taking into account both ergonomics and locking reliability. At the same time, the number of parts is small and the assembly and processability are good.

[0045] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A door open position locking mechanism, characterized in that: include: A lock ring support fixed on the door body structure, wherein a lock ring is installed on the lock ring support; A lock support, one end of which is fixed to the fuselage structure and the other end of which has an installation space for installing a lock hook; A locking tongue arranged in the installation space, wherein the locking tongue is provided with a locking groove and has a wedge-shaped surface on the side facing the locking ring support, for guiding the locking ring into the locking groove of the locking tongue; A handle shaft passing through the lock support and the lock tongue, wherein the handle shaft is fixedly connected to the lock tongue; A handle mounted on the end of the handle shaft, wherein the handle is fixedly connected to the handle shaft; A torsion spring sleeved on the handle shaft, the torsion spring is located between the lock tongue and the lock support, and is used to provide elastic force to the lock tongue; Wherein, a stop shaft is provided on the lock support, and the stop shaft is used to contact the lower surface of the lock tongue when the lock tongue cooperates with the lock ring to prevent downward unlocking and cooperate with the torsion spring to keep the lock tongue in the locked position.

2. The hatch door open position locking mechanism according to claim 1, characterized in that: One end of the lock support is fixed to the fuselage structure by bolts with predetermined distribution, and the other side of the lock support is a double-ear structure, and an installation space for the lock tongue is formed between the double ears.

3. The hatch door open position locking mechanism according to claim 1, characterized in that: The handle is fastened to the handle shaft via a locking screw.

4. The hatch door open position locking mechanism according to claim 1, characterized in that: The material of the torsion spring is 50CrViA.

5. The hatch door open position locking mechanism according to claim 1, characterized in that: The width of the locking groove is greater than the diameter of the locking ring.

6. The hatch door open position locking mechanism according to claim 5, characterized in that: The notch height on one side of the wedge-shaped surface of the locking groove is lower than the notch height on the non-wedge-shaped surface side, so that when the wedge-shaped surface guides the locking ring into the locking groove, the notch on the non-wedge-shaped surface side blocks the locking ring, allowing the locking ring to enter the locking groove.

7. The hatch door open position locking mechanism according to claim 1, characterized in that: The locking ring is pivotally connected to the locking ring support.

8. The hatch door open position locking mechanism according to claim 7, characterized in that: A bushing is provided on the lock ring support at a position where the lock ring is installed.

9. The hatch door open position locking mechanism according to claim 1, characterized in that: The lock support, lock tongue, handle, handle shaft, lock ring support and stop shaft are all aluminum alloy machined parts.

10. The hatch door open position locking mechanism according to claim 1, characterized in that: The locking ring is a stainless steel machined part.

Images