A self-compensating manual unlocking mechanism

Abstract

The application provides a self-compensation manual unlocking mechanism, and belongs to the field of aircraft structure design.The unlocking mechanism comprises a driving mechanism, a space transmission mechanism, a tensioning reset mechanism and a supporting mechanism, wherein the driving mechanism comprises an unlocking handle, a rope and at least one pulley support; the space transmission mechanism comprises a sector wheel, a rotating shaft, a rocker arm and a length-adjustable unlocking pull rod; the tensioning reset mechanism comprises a spring support, a spring and a roller cover; and the supporting mechanism comprises a rear support, a front support, a first pull rod, a second pull rod, a first connecting seat and a second connecting seat. The unlocking mechanism can reliably realize unlocking of the locking mechanism, can compensate for structural gaps caused by expansion and contraction of the rope due to temperature influence, can avoid accidental unlocking of the locking mechanism, and is high in safety.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aircraft structure design, and particularly relates to a self-compensating manual unlocking mechanism. BACKGROUND

[0002] After the aircraft lock mechanism is locked, a separate unlocking mechanism usually needs to be designed to perform the unlocking operation. The existing lock mechanism will produce gap changes when the temperature changes, which will cause accidental unlocking and safety hazards. SUMMARY

[0003] The purpose of the present application is to provide a self-compensating manual unlocking mechanism to solve or alleviate at least one problem in the background art.

[0004] The technical solution of the present application is: a self-compensating manual unlocking mechanism, comprising: a driving mechanism, a space transmission mechanism, a tensioning reset mechanism, and a support mechanism, wherein:

[0005] The driving mechanism comprises an unlocking handle, a rope, and at least one pulley support. One end of the unlocking handle is hinged to the fuselage structure, and the other end is connected with the rope. The rope passes through the pulley support and is connected to the space transmission mechanism;

[0006] The space transmission mechanism comprises a sector, a rotating shaft, a rocker arm, and a length-adjustable unlocking pull rod. The rope is connected to the top point of the sector away from the unlocking handle side and is wound in the guide groove of the sector. The rotating shaft is connected to the center of the sector and one end of the rocker arm at both ends. The other end of the rocker arm is connected with the unlocking pull rod, and the unlocking pull rod is connected to the lock mechanism.

[0007] The tensioning reset mechanism comprises a spring bracket, a spring, and a roller cover. The spring bracket is installed on the rocker arm. The spring bracket is provided with a roller cover at both ends. One end of the spring is connected to the spring bracket in the roller cover to protect the spring from accidental disconnection. The other end of the spring is connected to the lock body structure.

[0008] The support mechanism comprises a rear support, a front support, a first pull rod, a second pull rod, a first connecting seat, and a second connecting seat. The rear support is installed on the fuselage structure to support the rotating shaft. The front support is connected to the first connecting seat and the second connecting seat fixed on the fuselage structure through the first pull rod and the second pull rod, wherein the two ends of the first pull rod and the second pull rod are respectively hinged to the front support and the first connecting seat and the second connecting seat.

[0009] In the optional embodiment of the present application, the end of the unlocking handle hinged to the fuselage structure is provided with a ball bearing.

[0010] In optional embodiments of the present application, the pulley supports are two, and the rope forms a bending point after passing through the pulley supports, so as to guide and tension the rope.

[0011] In optional embodiments of the present application, the rope is a steel cable.

[0012] In optional embodiments of the present application, the circumferential length of the sector edge of the sector wheel is determined according to the pulling stroke of the unlocking handle.

[0013] In optional embodiments of the present application, the unlocking pull rod comprises an outer sleeve joint, an adjusting screw, a piston rod, a connecting sleeve and a piston rod joint, the adjusting screw is a hollow threaded rod structure, the outer sleeve joint is screwed in the inside of one side of the adjusting screw, the piston rod is inserted into the inside of the other side of the adjusting screw and is limited by the connecting sleeve which is screwed with the outside of the adjusting screw, so as to realize the adjustable initial installation length of the unlocking pull rod, and the end of the piston rod extending out of the adjusting screw is connected with the piston rod joint.

[0014] In optional embodiments of the present application, the end of the piston head of the piston rod in the adjusting screw and the connecting sleeve is provided with a bushing, and the piston rod is supported by the bushing to reduce the sliding friction of the piston rod in the adjusting screw and the connecting sleeve.

[0015] In optional embodiments of the present application, the use stroke of the piston rod is adjusted to match the unlocking stroke of the lock mechanism, wherein, after the lock mechanism is unlocked, there is a space between the piston head of the piston rod and the end surface of the outer sleeve joint, and after the lock mechanism is unlocked, the piston head of the piston rod is provided with a remaining stroke L from the end surface of the connecting sleeve.

[0016] In optional embodiments of the present application, the positions of the rotating shafts installed in the rear support and the front support are respectively provided with ball bearings.

[0017] In optional embodiments of the present application, the first pull rod and the second pull rod are both length-adjustable threaded connection type pull rods.

[0018] The unlocking mechanism of the present application can reliably realize the unlocking of the lock mechanism, can compensate the structural gap caused by the expansion and contraction of the rope due to temperature influence, can avoid accidental unlocking of the lock mechanism, and has high safety. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions provided by the present application, the following will briefly introduce the drawings. Obviously, the drawings described below are only some embodiments of the present application.

[0020] Figure 1 The figure is a schematic diagram of the self-compensating manual unlocking mechanism of the present application.

[0021] Figure 2The figure shows the open lock pull rod in the lock mechanism unlocking state in the application.

[0022] Figure 3 The figure shows the open lock pull rod in the lock mechanism unlocking state in the application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application clearer, the technical scheme in the application examples will be described in more detail below with reference to the drawings in the application examples.

[0024] As Figure 1 The application provides a self-compensating manual unlocking mechanism, which comprises a driving mechanism 10, a space transmission mechanism 20, a tensioning reset mechanism 30 and a supporting mechanism 40.

[0025] The driving mechanism 10 comprises an unlocking handle 12, a rope 13 and at least one pulley support, one end of the unlocking handle 12 is hingedly connected to the body structure, the other end of the unlocking handle 12 is connected to the rope 13, the other end of the rope 13 is connected to a sector wheel 21 of the space transmission mechanism 20 after passing through the pulley support, and the pulley support is fixedly installed on the body structure to realize the fixing and supporting effect.

[0026] In the application, a ball bearing 11 is arranged at the upper end of the unlocking handle 12, which is installed on the body structure, so that the unlocking handle 12 can rotate around the axis of the handle bearing 11, thereby making the rotation of the rotating pair more flexible and reducing the friction.

[0027] In the preferred embodiment of the application, the pulley support is two, i.e. a first pulley support 14 and a second pulley support 15, and the rope 13 passes through the first pulley support 14 and the second pulley support 15 in sequence to form two bending points, so that the bending points are formed by the two pulley supports, thereby improving the tension of the rope 13 and avoiding the separation of the rope 13 from the pulley support.

[0028] In the application, the rope 13 is a steel cable to improve the durability.

[0029] The space transmission mechanism 20 comprises the sector wheel 21, a rotating shaft 22, a rocker arm 23 and an unlocking pull rod 24. The rope 13 is connected to the vertex of the sector wheel 21 away from the unlocking handle 12, and is wound in the guide groove of the sector wheel 21, so that the sector wheel 21 can be rotated by pulling the unlocking handle 12. The two ends of the rotating shaft 22 are connected to the center of the sector wheel 21 and one end of the rocker arm 23, respectively, the other end of the rocker arm 23 is connected to the unlocking pull rod 24, and the unlocking pull rod 24 is connected to the lock mechanism (not shown).

[0030] In some embodiments of the application, the circumferential length of the sector edge of the sector wheel 21 can be determined or adjusted according to the pulling stroke of the unlocking handle 12.

[0031] As shown in Figure 2 and Figure 3 The unlocking pull rod 24 includes an outer cylinder joint 241, an adjusting screw 242, a piston rod 244, a connecting sleeve 245, and a piston rod joint 246.

[0032] The adjusting screw 242 is a hollow threaded rod structure, the outer cylinder joint 241 is screwed on the inside of one side of the adjusting screw 242, and the piston rod 244 is inserted into the other side of the adjusting screw 242, which is connected to the rocker arm 23. The piston rod 244 is limited by the connecting sleeve 245 which is screwed on the outside of the adjusting screw 242, so that the initial installation length of the unlocking pull rod 24 can be adjusted. The end of the piston rod 244 extending out of the adjusting screw 242 is connected to the piston rod joint 246.

[0033] In some embodiments of the present application, the end of the piston head of the piston rod 244 inside the adjusting screw 242 and the connecting sleeve 245 is provided with a bushing 243 for supporting the piston rod 244, reducing the sliding friction of the piston rod 244 in the adjusting screw 242 and the connecting sleeve 245, and reducing the frictional resistance.

[0034] In the present application, the use stroke of the piston rod 244 is adjusted to match the unlocking stroke of the lock mechanism. After the lock mechanism is unlocked, there is enough space between the piston head of the piston rod 244 and the end face of the outer cylinder joint 241. After the lock mechanism is unlocked, there is a remaining stroke L between the piston head of the piston rod 244 and the end face of the connecting sleeve 245.

[0035] The tensioning and resetting mechanism 30 includes a spring bracket 31, a spring 32, and a roller cover 33. The spring bracket 31 passes through the rocker arm 23 and is located at the middle position of the rocker arm 23. The two ends of the spring bracket 31 are provided with the roller cover 33. One end of the spring 32 is connected to the spring bracket 31 inside the roller cover 33, and the spring 32 can be protected from accidental disconnection by the roller cover 33. The other end of the spring 32 is connected to the lock body structure (not shown).

[0036] The installation position of the spring bracket 31 on the rocker arm 23 ensures that the stretching amount of the spring 33 matches the unlocking stroke of the lock mechanism.

[0037] The support mechanism 40 includes a rear support 41, a front support 43, a first pull rod 45, a second pull rod 47, a first connecting seat 46, and a second connecting seat 48. The rear support 41 is installed on the fuselage structure to support the rotating shaft 22 in the space transmission mechanism 20. The front support 43 is connected to the first connecting seat 46 and the second connecting seat 48 fixed on the fuselage structure through the first pull rod 45 and the second pull rod 47, wherein the two ends of the first pull rod 45 and the second pull rod 47 are respectively hinged to the front support 43 and the first connecting seat 46 and the second connecting seat 48.

[0038] In some embodiments of this application, ball bearings 42 and 44 are respectively provided at the positions where the rotating shaft 22 is installed in the rear support 41 and the front support 43, so that the rotating pair at the rotating shaft 22 can rotate flexibly, reduce friction, and automatically align the rotating double bearings.

[0039] In this application, the first tie rod 45 and the second tie rod 47 can be threaded tie rods with adjustable length to accommodate the assembly and fixing of the front support 43.

[0040] In this application, by rationally designing the rotation radius of the sector wheel 21, rocker arm 23, unlocking handle 20, and the connection point of rope 13, the unlocking angle of the unlocking handle 12 and the unlocking stroke of the lock mechanism are matched. When the unlocking handle 12 is pulled, the rope 13 connected to the unlocking handle 12 pulls the sector wheel 21 to rotate. The rotation of the sector wheel 21 is transmitted to the rocker arm 23 through the rotating shaft 22, which in turn pulls the unlocking lever 24, ultimately controlling the unlocking and unlocking of the lock mechanism.

[0041] The unlocking mechanism of this application reliably unlocks the lock, compensates for structural gaps caused by rope expansion and contraction due to temperature, prevents accidental unlocking, and offers high security. The first / second pull rods with length adjustment function support the front support of the rotating part, ensuring flexible rotation and high safety and reliability. This application incorporates a spring-formed reset structure, which, combined with the unlocking pull rod, allows the unlocking pull rod to relax in both locked and unlocked positions without affecting the lock mechanism's performance, ensuring high reliability.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A self-compensating manual unlocking mechanism, characterized in that, include: The mechanism includes a drive mechanism, a spatial transmission mechanism, a tensioning and resetting mechanism, and a support mechanism, among which: The drive mechanism includes an unlocking handle, a rope, and at least one pulley support. One end of the unlocking handle is hinged to the body structure, and the other end is connected to the rope. The rope passes through the pulley support and is connected to the spatial transmission mechanism. The spatial transmission mechanism includes a sector wheel, a rotating shaft, a rocker arm, and an adjustable-length unlocking rod. A rope is connected to the apex of the sector wheel furthest from the lock handle and is wound within the guide groove of the sector wheel. The two ends of the rotating shaft are respectively connected to the center of the sector wheel and one end of the rocker arm. The other end of the rocker arm is connected to the unlocking rod, which is connected to the locking mechanism. The unlocking rod includes an outer cylinder connector, an adjusting screw, a piston rod, a connecting sleeve, and a piston rod connector. The adjusting screw is a hollow threaded rod structure. The outer cylinder connector is screwed into the interior of one side of the adjusting screw, and the piston rod is inserted into the interior of the other side of the adjusting screw and connected to the outer side of the adjusting screw via a screw thread. The connecting sleeve of the threaded connection is used for limiting, thereby realizing the initial installation length of the unlocking rod is adjustable. The end of the piston rod extending out of the adjusting screw is connected to a piston rod joint. The piston head of the piston rod located in the adjusting screw and the end of the connecting sleeve are provided with bushings. The bushings support the piston rod to reduce the sliding friction of the piston rod in the adjusting screw and the connecting sleeve. By adjusting the working stroke of the piston rod, the unlocking rod is matched with the unlocking stroke of the locking mechanism. After the locking mechanism is unlocked, there is space between the piston head of the piston rod and the end face of the outer cylinder joint. After the locking mechanism is unlocked, there is a remaining stroke L between the piston head of the piston rod and the end face of the connecting sleeve. The tensioning and reset mechanism includes a spring bracket, a spring, and a roller cover. The spring bracket is mounted on a rocker arm, and roller covers are provided at both ends of the spring bracket. One end of the spring is connected to the spring bracket inside the roller cover, and the roller cover protects the spring from accidental disengagement. The other end of the spring is connected to the lock body structure. The support mechanism includes a rear support, a front support, a first tie rod, a second tie rod, a first connecting seat, and a second connecting seat. The rear support is mounted on the fuselage structure to support the rotating shaft. The front support is connected to the first connecting seat and the second connecting seat, which are fixed on the fuselage structure, via the first tie rod and the second tie rod. The two ends of the first tie rod and the second tie rod are respectively hinged to the front support, the first connecting seat, and the second connecting seat.

2. The self-compensating manual unlocking mechanism as described in claim 1, characterized in that, The unlocking handle is hinged to one end of the machine body structure and is equipped with a ball bearing.

3. The self-compensating manual unlocking mechanism as described in claim 1, characterized in that, There are two pulley supports, and the rope passes through the pulley supports to form a bending point, thereby guiding and tensioning the rope.

4. The self-compensating manual unlocking mechanism as described in claim 1, characterized in that, The rope is a steel cable.

5. The self-compensating manual unlocking mechanism as described in claim 1, characterized in that, The perimeter of the sector edge of the sector wheel is determined according to the actuation stroke of the unlocking handle.

6. The self-compensating manual unlocking mechanism as described in claim 1, characterized in that, Ball bearings are respectively installed at the positions where the rotating shaft is mounted in the rear support and the front support.

7. The self-compensating manual unlocking mechanism as described in claim 6, characterized in that, Both the first and second pull rods are threaded pull rods with adjustable length.

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