Sliding rail cabin door locking mechanism

Abstract

The invention belongs to aircraft cabin door mechanisms, and particularly relates to a sliding rail cabin door locking mechanism. The mechanism is used for controlling limiting after the sliding rail type cabin door is opened, and the effect of firmly locking the cabin door is achieved. The mechanism is simple and efficient. The device directly acts on an opening mechanism of the sliding rail cabin door to complete position locking, redundant installation and connection are avoided, and the mechanism arrangement space is reduced; and the man-machine effect is excellent. The mechanism supports multi-state automatic locking, unmanned manual operation is achieved, the unlocking process is driven through the steel cable, and the handle can be arranged at the position where operation is most convenient; the reliability is high. The mechanism is reliable in movement stroke, has the function of preventing unlocking and reverse driving, and can reliably lock the cabin door at the opening position.

Description

Technical Field

[0001] The present invention belongs to the aircraft cabin door mechanism. Specifically, it is a slide rail cabin door locking mechanism. Background Art

[0002] When the aircraft cabin door is fully opened, a cabin door locking mechanism needs to be arranged to lock it in the open position, ensure the smoothness of the fuselage opening position, and prevent casualties caused by accidental closing of the cabin door. The slide rail cabin door lifting and locking mechanism hinders the accidental sliding of the cabin door along the slide rail after the cabin door is opened. The core design idea is to prevent the movement of the cabin door opening roller along the slide rail, thereby restricting the accidental sinking of the cabin door. After the locking action is completed, when the cabin door has a tendency to close accidentally, measures should be taken to prevent the unlocking of the reverse drive handle of the lock; an unlocking device is arranged, and the cabin door can be closed only after the lifting and locking mechanism's restriction on the roller is released. The arrangement of the unlocking device should consider ergonomics, and its position should be accessible and convenient for human hands to operate. The existing slide rail cabin door locking mechanisms are not concise enough, have poor ergonomics, and have certain potential hazards in terms of reliability. Summary of the Invention

[0003] According to one aspect of the present application, a slide rail cabin door locking mechanism is provided. The slide rail cabin door locking mechanism includes a slide rail (1), a support (2), a limit support (3), a limit bolt assembly (4), a limit support (5), a support (6), an interlock spring (7), a lock tongue (8), a roller (9), a rocker arm (10), a structural support (11), a steel cable (12), a handle (13), a rocker arm (14), a return spring (15), a support (16), a support (17), a roller (23); wherein the slide rail (1), the support (2), the limit support (3), the limit support (5), the support (6), the structural support (11), the support (16), and the support (17) are fixedly connected to the fuselage door frame, and the roller (23) is hinged to the cabin door.

[0004] The lock tongue (8) includes five functional surfaces, namely a lock tongue upper locking drive functional surface (18), a lock tongue locking functional surface (19), a lock tongue reset functional surface (20), a lock tongue stopping functional surface (21), and a lock tongue arc surface (22). Through its five functional surfaces, automatic locking, position locking, and unlocking of the cabin door in the lifted position are realized.

[0005] The support (6) is fixedly connected to the structural support (11), the rocker arm (10) is hinged to the support (6), the roller (9) is hinged to the rocker arm (10), the lock tongue (8) is hinged to the support (2), and the roller (9) is used to lock the position of the lock tongue (8);

[0006] The handle (13) is hinged to the support (17), the handle (13) is fixedly connected to the rocker arm (14), and both ends of the cable (12) are respectively hinged to the rocker arm (14) and the rocker arm (10). By rotating the handle (13), the rocker arm (10) can be driven by the cable (12) to release the locking of the roller (9) on the rocker arm (10) in the unlocking direction of rotation of the locking tongue (8), thereby releasing the locking of the hatch in the lifting position; the interlock spring (7) always exerts a force on the locking tongue (8) in the unlocking direction, and the return spring (15) always has a tendency to drive the handle to rotate to the closed position (locking position), that is, to drive the rocker arm (10) and the roller (9) assembly to rotate in the locking direction.

[0007] When the hatch is lifted, the locking drive functional surface (18) of the locking tongue (8) is driven by the roller (23) hinged to the hatch structure to rotate the locking tongue (8) away from the roller (9). After the hatch is lifted in place, the locking tongue (8) returns to the locking position under the action of the spring, and the downward movement of the roller (23) is locked by the locking functional surface (19) of the locking tongue (8). The position of the locking tongue (8) is realized by the roller (9) by engaging the stop functional surface (21) of the locking tongue (8).

[0008] Rotate the handle (13), drive the rocker arm (10) and the roller (9) assembly to rotate towards the arc surface (22) of the locking tongue (8) through the transmission mechanism, release the position locking of the locking tongue (8), and the roller (23) drives the locking functional surface (19) of the locking tongue (8) and makes an unlocking movement under the action of the interlock spring (7).

[0009] After the hatch is unlocked and leaves the locked position, under the action of the interlock spring (7), the locking functional surface (19) of the locking tongue (8) is always below the bottom surface of the slide rail (1), and the reset functional surface (20) of the locking tongue (8) is above the bottom surface of the slide rail (1) and is in a waiting-to-be-triggered state. When the hatch is lifted, the roller (23) contacts the reset functional surface (20) of the locking tongue (8) and drives the locking tongue (8) to rotate in the locking direction against the pulling force of the interlock spring (7) through this plane. The roller (9) slides on the arc surface (22) of the locking tongue (8). When the roller (9) leaves the arc surface (22), under the action of the return spring (15), the rocker arm (10) and the roller (9) assembly rotate to the stop functional surface (21) to complete the position locking of the locking tongue (8) and the hatch.

[0010] When the hatch door is installed for the first time or the reset function surface (20) of the locking tongue (8) is not located above the hatch door slide rail due to loads such as vibration during flight, the locking drive function surface (18) of the locking tongue (8) can also drive the mechanism to lock the position of the hatch door. At this time, the hatch door is lifted upward, and the roller (23) on the hatch door moves upward along the inner edge of the slide rail (1) of the slide rail. After the roller (23) contacts the locking drive function surface (18) of the locking tongue (8), it is pressed down as the hatch door continues to move upward, ensuring that the hatch door is smoothly lifted in place. After being lifted in place, the locking tongue (8) is reset under the action of the interlocking tension spring (7) to complete the locking of the hatch door position.

[0011] By rotating the handle (13), the rocker arm (10) can be driven to rotate towards the arc surface (22) of the locking tongue (8) through the rocker arm (14) and the steel cable (12), releasing the locking of the unlocking direction rotation of the locking tongue (8) by the roller (9) of the rocker arm (10). The locking tongue (8) rotates in the unlocking direction under the combined action of the interlocking tension spring (7) and the roller (23), and the hatch door is unlocked.

[0012] The locking function of this set of mechanisms relies on the locking function surface of the locking tongue to block the path of the hatch door roller from sliding downward. The rotational movement of the roller downward that unlocks the locking tongue is blocked by the locking roller on the control rocker arm. Since the control rocker arm is stuck on the limit component, the locking tongue will always be in the locked state, thus achieving the effect of firmly locking the hatch door; the unlocking of this set of mechanisms is controlled by the handle mechanism. The handle drives the control rocker arm to rotate through the steel cable. After the locking roller bypasses the stop function surface of the locking tongue, it presses on the arc surface of the locking tongue under the action of the return spring of the handle mechanism. At this time, the locking tongue is unlocked and rotates in the unlocking direction under the action of the hatch door roller and the interlocking tension spring; after the hatch door is unlocked and closed, the locking function surface of the locking tongue is below the hatch door slide rail, and the reset function surface of the locking tongue is above the slide rail. When the hatch door is lifted again, the hatch door roller can drive the reset function surface of the locking tongue to make the locking function surface turn under the hatch door roller. The control rocker arm and the locking roller rotate to the stop function surface of the locking tongue under the action of the interlocking tension spring, and the control rocker arm is locked in position by the stop component to complete the locking of the hatch door position; to prevent the reset function surface of the locking tongue from being below the slide rail due to accidents such as vibration during flight, the locking drive function surface also has the function of driving the locking of the hatch door position. When the hatch door roller contacts the locking drive function surface during lifting and continues to open the hatch door, the locking drive function surface of the locking tongue is pressed down, ensuring that the hatch door is smoothly lifted in place. After being lifted in place, the locking tongue is reset under the action of the interlocking tension spring to complete the locking of the hatch door position.

[0013] The present invention has the following advantages and beneficial effects:

[0014] 1. The mechanism is simple and efficient. The present invention directly acts on the opening mechanism of the slide rail hatch door to complete the position locking, without redundant installation connections, reducing the space for mechanism layout;

[0015] 2. Excellent man-machine efficiency. The mechanism of the present invention supports multi-state automatic locking, without manual operation, and the unlocking process is driven by a steel cable. The handle can be arranged at the most convenient position for operation;

[0016] 3. High reliability. The movement stroke of the mechanism is reliable, with an anti-unlocking reverse drive function, and can reliably lock the cabin door in the open position. Brief Description of the Drawings

[0017] Figure 1 Isometric view of the slide rail cabin door locking mechanism of Embodiment 1;

[0018] Figure 2 Is Figure 1 Partial enlarged view at A in

[0019] Figure 3 Schematic diagram of the locking tongue (8);

[0020] Figure 4 Schematic diagram of the locking of the slide rail cabin door locking mechanism of Embodiment 1;

[0021] Figure 5 Schematic diagram of the unlocking of the slide rail cabin door locking mechanism of Embodiment 1;

[0022] Figure 6 Is Figure 5 Partial enlarged view at B in

[0023] Figure 7 Schematic diagram of the downward sliding of the cabin door after unlocking of a slide rail cabin door locking mechanism;

[0024] Figure 8 Schematic diagram of the reset of the locking tongue of a slide rail cabin door locking mechanism;

[0025] Figure 9 Schematic diagram of the driving of the locking tongue reset function surface to the locked position of a slide rail cabin door locking mechanism;

[0026] In the figure: 1 slide rail, 2 support, 3 limit support, 4 limit bolt assembly, 5 limit support, 6 support, 7 interlock spring, 8 locking tongue, 9 roller, 10 rocker arm, 11 structural support, 12 steel cable, 13 handle, 14 rocker arm, 15 return spring, 16 support, 17 support, 18 locking tongue locking drive function surface, 19 locking tongue locking function surface, 20 locking tongue reset function surface, 21 locking tongue stop function surface, 22 locking tongue arc surface, 23 roller. Detailed Description of the Invention

[0027] The following further describes the specific embodiments of the present invention in conjunction with the drawings and technical solutions.

[0028] Embodiment 1

[0029] A slide rail hatch locking mechanism includes a slide rail (1), a support (2), a limit support (3), a limit bolt assembly (4), a limit support (5), a support (6), an interlocking spring (7), a locking tongue (8), a roller (9), a rocker arm (10), a structural support (11), a steel cable (12), a handle (13), a rocker arm (14), a return spring (15), a support (16), a support (17), and a roller (23). The locking tongue (8) includes five functional surfaces, namely, a locking tongue upper locking drive functional surface (18), a locking tongue locking functional surface (19), a locking tongue return functional surface (20), a locking tongue stop functional surface (21), and a locking tongue arc surface (22). Through these five functional surfaces, automatic locking, position locking, and unlocking of the hatch in the raised position are achieved.

[0030] The roller (23) rolls within the slide rail (1), and the locking tongue (8) can lock the roller (23) in different states. When the roller (23) moves upward along the slide rail (1), the roller (23) automatically drives the locking tongue (8) to rotate clockwise, and the rocker arm (10) restricts the locking tongue (8) in the locked state, locking the roller (23) to prevent the hatch from moving downward along the slide rail (1). When unlocking is required, by rotating the handle (13), the rocker arm (14) is driven to rotate, and the rocker arm (10) is driven to rotate through the steel cable (12), releasing the locking of the rocker arm (10) on the locking tongue (8), enabling the roller (23) to freely drive the locking tongue (8) to rotate counterclockwise along the slide rail (1) to complete the downward movement.

[0031] As Figure 1 , 2 , as shown in Figure 3, a slide rail hatch locking mechanism consists of a locking mechanism and a handle control mechanism. The locking mechanism includes a locking tongue (8), a rocker arm (10), a roller (9), an interlocking spring (7), a locking tongue limit assembly (3)(4) fixedly connected to the support (2), a rocker arm limit assembly (5)(4), and related support supports. The handle mechanism includes a handle (13), a rocker arm (14), a return spring (15), a steel cable (12), and related support supports. When the hatch is in the state of waiting to be opened, due to the initial use of the mechanism or vibrations during flight and other accidents, the locking tongue return functional surface (20) is below the slide rail (1). When the roller (23) contacts the locking tongue upper locking drive functional surface (18) during lifting and the hatch continues to open, the locking tongue upper locking drive functional surface (18) is pressed down to ensure that the hatch is smoothly lifted to the in-place position. After the lifting is in place, the locking tongue (8) is reset under the action of the interlocking spring (7) to complete the position locking of the hatch.

[0032] As Figure 4As shown in the figure, for the locking of a slide rail hatch locking mechanism, the locking function relies on the locking function surface (19) of the locking tongue to block the downward sliding path of the hatch roller (23). The rotational movement of the hatch roller (23) in the unlocking direction of the locking tongue (8) is blocked by the locking roller (9) on the control rocker arm (10). Since the control rocker arm (10) is stuck on the control rocker arm limit components (5)(4), the locking tongue (8) will always be in the locked state, thus achieving the purpose of firmly locking the hatch.

[0033] As Figure 3 shown in the figure, for the unlocking of a slide rail hatch locking mechanism, the handle (13) drives the rocker arm (10) to rotate through the steel cable (12). After the roller (9) bypasses the locking tongue stop function surface (21), it presses on the locking tongue arc surface (22) under the action of the return spring (15) of the handle mechanism. At this time, the locking tongue (8) is unlocked.

[0034] As Figure 6 shown in the figure, for the downward sliding of the hatch after the unlocking of a slide rail hatch locking mechanism, after the locking tongue (8) is unlocked, under the action of the roller (23) and the interlocking tension spring (7), the locking tongue (8) makes an unlocking rotation. The roller (9) presses on the locking tongue arc surface (22) under the action of the return spring (15). At this time, the roller (9) cannot hinder the rotation of the locking tongue (8); under the action of the interlocking spring (7), the locking tongue (8) is pulled on the locking tongue limit components (3)(4). At this time, the locking function surface (19) of the locking tongue is below the hatch slide rail (1), and the locking tongue return function surface (20) is above the slide rail (1).

[0035] As Figure 7 shown in the figure, for the locking of the drive locking tongue return function surface of a slide rail hatch locking mechanism, when the hatch is lifted, the roller (23) can drive the locking tongue return function surface (20) to make the locking function surface (19) of the locking tongue turn under the roller (23), reaching the locked state of the hatch position.

[0036] As Figure 8 shown in the figure, when the drive locking tongue return function surface (20) of a slide rail hatch locking mechanism reaches the locked position, the locking tongue (8) can no longer hinder the rotational movement of the roller (9) in the locking direction under the action of the return spring (15). After the rocker arm (10) reaches the rocker arm limit components (5)(4), the locking tongue (8) presses on the roller (9) under the action of the interlocking tension spring (7), completing the locking of the hatch position.

[0037] As Figure 9As shown, a kinematic simulation verification of a slide rail hatch locking mechanism yields the following results: During the upward movement of the hatch, the roller (23) moves upward along the slide rail (1). The roller (23) contacts the reset functional surface (20) of the locking tongue (8), causing the locking tongue (8) to rotate clockwise. The interlocking tension spring (7) pulls the rocker arm (10), causing the roller (9) to lock the locking tongue (8). At this time, the roller (23) cannot drive the locking tongue (8) to rotate counterclockwise again, achieving the locking of the hatch in the raised position. During the closing process of the hatch, first rotate the rotary handle (13), which drives the rocker arm (14) to rotate. Through the steel cable (12), the rocker arm (10) is driven to rotate, releasing the locking of the rocker arm (10) on the locking tongue (8), achieving the locking function surface (19) of the locking tongue (8) where the roller (23) freely drives the locking tongue (8) along the slide rail (1), driving the locking tongue (8) to rotate counterclockwise to complete the downward movement.

Claims

1. A slide rail cabin door locking mechanism, characterized in that it includes a slide rail (1), a support (2), a limit support (3), a limit bolt assembly (4), a limit support (5), a support (6), an interlock spring (7), a lock tongue (8), a roller (9), a rocker arm (10), a structural support (11), a steel cable (12), a handle (13), a rocker arm (14), a return spring (15), a support (16), a support (17), a roller (23); wherein the slide rail (1), the support (2), the limit support (3), the limit support (5), the support (6), the structural support (11), the support (16), and the support (17) are fixedly connected to the fuselage door frame, and the roller (23) is hinged to the cabin door.

2. The slide rail cabin door locking mechanism according to claim 1, characterized in that the lock tongue (8) includes 5 functional surfaces, namely the lock tongue upper locking drive functional surface (18), the lock tongue locking functional surface (19), the lock tongue return functional surface (20), the lock tongue stopping functional surface (21), and the lock tongue arc surface (22). Through its 5 functional surfaces, automatic locking, position locking and unlocking of the cabin door in the lifting position are realized.

3. The slide rail cabin door locking mechanism according to claim 1, characterized in that the support (6) is fixedly connected to the structural support (11), the rocker arm (10) is hinged to the support (6), the roller (9) is hinged to the rocker arm (10), the lock tongue (8) is hinged to the support (2), and the roller (9) is used to lock the position of the lock tongue (8); the handle (13) is hinged to the support (17), the handle (13) is fixedly connected to the rocker arm (14), both ends of the steel cable (12) are respectively hinged to the rocker arm (14) and the rocker arm (10). By rotating the handle (13), the rocker arm (10) can be driven by the steel cable (12) to release the locking of the roller (9) on the rocker arm (10) in the unlocking direction of rotation of the lock tongue (8), thereby releasing the locking of the cabin door lifting position; the interlock spring (7) always has a force in the unlocking direction on the lock tongue (8), and the return spring (15) always has a tendency to drive the handle to rotate to the closed position (locked position), that is, a force to drive the rocker arm (10) and the roller (9) assembly to rotate to the locking position.

4. The slide rail cabin door locking mechanism according to claim 1, characterized in that when the cabin door is lifted, the roller (23) hinged to the cabin door structure drives the lock tongue upper locking drive functional surface (18) of the lock tongue (8) to rotate the lock tongue (8) away from the roller (9). After the cabin door is lifted in place, the lock tongue (8) returns to the locked position under the action of the spring. The falling movement of the roller (23) is locked by the locking functional surface (19) of the lock tongue (8), and the position of the lock tongue (8) is realized by the roller (9) by clamping the stopping functional surface (21) of the lock tongue (8).

5. The slide rail cabin door locking mechanism according to claim 4, characterized in that Rotate the handle (13), drive the drive rocker arm (10) and the roller (9) assembly to rotate towards the arc surface (22) of the lock tongue (8) through the transmission mechanism, release the position locking of the lock tongue (8), and the roller (23) drives the locking function surface (19) of the lock tongue (8) and performs an unlocking movement under the action of the interlocking tension spring (7).

6. The slide rail hatch locking mechanism according to claim 5, characterized in that After the hatch is unlocked and leaves the locked position, under the action of the interlocking tension spring (7), the locking function surface (19) of the lock tongue (8) is always located below the bottom surface of the slide rail (1), and the reset function surface (20) of the lock tongue (8) is located above the bottom surface of the slide rail (1) and is in a state of waiting to be triggered. When the hatch is lifted, the roller (23) contacts the reset function surface (20) of the lock tongue (8) and drives the lock tongue (8) to rotate in the locking direction against the tension of the interlocking tension spring (7) through this plane. The roller (9) slides on the arc surface (22) of the lock tongue (8). When the roller (9) leaves the arc surface (22), under the action of the return spring (15), the rocker arm (10) and the roller (9) assembly rotate to the stop function surface (21) to complete the position locking of the lock tongue (8) and the hatch.

7. The slide rail hatch locking mechanism according to claim 1, characterized in that When the hatch is first installed or due to loads such as vibration during flight, the reset function surface (20) of the lock tongue (8) is not located above the hatch slide rail, and the locking drive function surface (18) of the lock tongue (8) can also drive the mechanism to lock the position of the hatch. At this time, when the hatch is lifted upward, the roller (23) on the hatch moves upward along the slide rail in the slide rail (1). After the roller (23) contacts the locking drive function surface (18) of the lock tongue (8), it is pressed down as the hatch continues to move upward, ensuring that the hatch is smoothly lifted in place. After being lifted in place, the lock tongue (8) resets under the action of the interlocking tension spring (7) to complete the position locking of the hatch.

8. The slide rail hatch locking mechanism according to claim 1, characterized in that By rotating the handle (13), the rocker arm (10) can be driven to rotate towards the arc surface (22) of the lock tongue (8) through the rocker arm (14) and the steel cable (12), releasing the locking of the unlocking direction rotation of the lock tongue (8) by the rocker arm (10) roller (9). The lock tongue (8) rotates in the unlocking direction under the combined action of the interlocking tension spring (7) and the roller (23), and the hatch is unlocked.

Images