Self-compensating manual unlocking mechanism

Abstract

The invention provides a self-compensating manual unlocking mechanism, and belongs to the field of aircraft structural design, the unlocking mechanism comprises a driving mechanism, a space transmission mechanism, a tensioning reset mechanism and a supporting mechanism, the driving mechanism comprises an unlocking handle, a rope and at least one pulley support; the space transmission mechanism comprises a fan-shaped 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. 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. According to the unlocking mechanism, unlocking of the lock mechanism can be reliably achieved, structural gaps caused by the fact that the temperature influences stretching and retracting of the rope can be compensated, accidental unlocking of the lock mechanism is avoided, and safety is high.

Description

Technical Field

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

[0002] After the aircraft locking mechanism is locked, a separate unlocking mechanism is usually required to perform the unlocking operation. The existing locking mechanism will produce a gap change when the temperature changes, and the gap change may cause accidental unlocking, causing a safety hazard. Summary of the invention

[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 technology.

[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 and resetting mechanism and a supporting mechanism, wherein:

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

[0006] The space transmission mechanism includes a fan-shaped wheel, a rotating shaft, a rocker arm and an unlocking pull rod with adjustable length. The rope is connected to the vertex of the fan-shaped wheel away from the lock handle and is wound in the guide groove of the fan-shaped wheel. The two ends of the rotating shaft are respectively connected to the center of the fan-shaped wheel and one end of the rocker arm. The other end of the rocker arm is connected to the unlocking pull rod, and the unlocking pull rod is connected to the lock mechanism.

[0007] The tensioning and resetting mechanism comprises a spring bracket, a spring and a roller cover, wherein the spring bracket is mounted on the rocker arm, roller covers are arranged at both ends of the spring bracket, one end of the spring is connected to the spring bracket in the roller cover, and the roller cover is used to protect the spring from accidental disengagement, and the other end of the spring is connected to the lock body structure;

[0008] The supporting mechanism includes 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, and 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 an optional embodiment of the present application, a ball bearing is provided at one end of the unlocking handle hinged to the fuselage structure.

[0010] In an optional embodiment of the present application, there are two pulley supports, and the rope forms a bending point after passing through the pulley supports, thereby guiding and tensioning the rope.

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

[0012] In an optional implementation manner of the present application, the circumference of the sector edge of the sector wheel is determined according to the pulling stroke of the unlocking handle.

[0013] In an optional embodiment of the present application, the unlocking pull rod includes an outer tube joint, an adjusting screw, a piston rod, a connecting sleeve and a piston rod joint. The adjusting screw is a threaded rod structure with a hollow interior. The outer tube joint is threadedly connected to the interior of one side of the adjusting screw, and the piston rod is threadedly connected to the interior of the other side of the adjusting screw and is limited by a connecting sleeve threadedly connected to the outer side of the adjusting screw, thereby achieving adjustable initial installation length of the unlocking pull rod, and the end of the piston rod extending out of the adjusting screw is connected to the piston rod joint.

[0014] In an optional embodiment of the present application, a bushing is provided at the piston head of the piston rod located in the adjusting screw and the end of the connecting sleeve, 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 an optional embodiment of the present application, the unlocking pull rod is matched with the unlocking stroke of the locking mechanism by adjusting the use stroke of the piston rod, wherein after the locking mechanism is unlocked, there is a space between the piston head of the piston rod and the end face of the outer tube joint, and 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.

[0016] In an optional implementation manner of the present application, ball bearings are respectively provided at the positions where the rotating shaft is installed in the rear support and the front support.

[0017] In an optional embodiment of the present application, the first pull rod and the second pull rod are both threaded pull rods with adjustable lengths.

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

[0019] 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.

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

[0021] Figure 2This is a schematic diagram of the unlocking pull rod in the unlocking state of the lock mechanism in this application.

[0022] Figure 3 This is a schematic diagram of the unlocking pull rod in the unlocking state of the lock mechanism in this application. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1 As shown, the present application provides a self-compensating manual unlocking mechanism, which includes: a driving mechanism 10, a space transmission mechanism 20, a tensioning and resetting mechanism 30 and a supporting mechanism 40.

[0025] Among them, the driving mechanism 10 includes an unlocking handle 12, a rope 13 and at least one pulley support. One end of the unlocking handle 12 is hinged on the fuselage structure, and the other end of the unlocking handle 12 is connected to the rope 13. The other end of the rope 13 passes through the pulley support and is connected to the fan-shaped wheel 21 of the space transfer mechanism 20. The pulley support is fixedly installed on the fuselage structure to achieve fixing and supporting functions.

[0026] In the present application, a ball bearing 11 is provided on the inner side of the upper end of the unlocking handle 12, which is installed on the fuselage structure, so that the unlocking handle 12 can rotate about the axis of the handle bearing 11, thereby making the rotation of the rotating pair more flexible and reducing friction.

[0027] In a preferred embodiment of the present application, there are two pulley supports, namely a first pulley support 14 and a second pulley support 15. The rope 13 passes through the first pulley support 14 and the second pulley support 15 in sequence to form two bending points. The bending points are formed by the two pulley supports, thereby increasing the tension of the rope 13 and preventing the rope 13 from detaching from the pulley supports.

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

[0029] The space transmission mechanism 20 includes a fan-shaped 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 fan-shaped wheel 21 far from the locking handle 12, and is wound in the guide groove of the fan-shaped wheel 21. When the unlocking handle 12 is pulled, the fan-shaped wheel 21 can be rotated. The two ends of the rotating shaft 22 are respectively connected to the center of the fan-shaped wheel 21 and one end of the rocker arm 23, and 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 locking mechanism (not shown).

[0030] In some embodiments of the present application, the circumference 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] like Figure 2 and Figure 3 As shown, the unlocking pull rod 24 includes an outer tube 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 threaded rod structure with a hollow interior. The outer tube joint 241 is threadedly connected to the interior of one side of the adjusting screw 242. The piston rod 244 is threadedly connected to the interior of the other side of the adjusting screw 242, which is connected to the rocker arm 23. The piston rod 244 is limited by a connecting sleeve 245 threadedly connected to the outer side 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 a piston rod joint 246.

[0033] In some embodiments of the present application, a bushing 243 is provided at the piston head of the piston rod 244 located in the adjusting screw 242 and the end of the connecting sleeve 245 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 frictional resistance.

[0034] In the present application, the unlocking pull rod 24 is matched with the unlocking stroke of the locking mechanism by adjusting the use stroke of the piston rod 244. After the locking mechanism is unlocked, sufficient space is left between the piston head of the piston rod 244 and the end face of the outer tube joint 241. After the locking mechanism is unlocked, a remaining stroke L is provided 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 approximately located in the middle of the rocker arm 23. The roller covers 33 are provided at both ends of the spring bracket 31. One end of the spring 32 is connected to the spring bracket 31 in the roller cover 33. The roller cover 33 can protect the spring 32 from accidental disengagement. 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 tie rod 45, a second tie rod 47, a first connection seat 46 and a second connection seat 48. The rear support 41 is installed on the fuselage structure to support the rotating shaft 22 in the space transfer mechanism 20. The front support 43 is connected to the first connection seat 46 and the second connection seat 48 fixed on the fuselage structure through the first tie rod 45 and the second tie rod 47, wherein the two ends of the first tie rod 45 and the second tie rod 47 are hinged to the front support 43 and the first connection seat 46 and the second connection seat 48 respectively.

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

[0039] In the present application, the first pull rod 45 and the second pull rod 47 may be threaded pull rods with adjustable lengths to accommodate the assembly and fixing of the front support 43 .

[0040] In the present application, the rotation radius of the connection point of the sector wheel 21, the rocker arm 23, the unlocking handle 20 and the rope 13 is reasonably designed to achieve the matching of the unlocking angle of the unlocking handle 12 and the unlocking stroke of the lock mechanism. When the unlocking handle 12 is pulled, the rope 13 connected to the unlocking handle 12 pulls the sector wheel 21 to rotate, and the rotation of the sector wheel 21 is transmitted to the rocker arm 23 through the rotating shaft 22, thereby pulling the unlocking rod 24, and finally controlling the unlocking and unlocking of the lock mechanism.

[0041] The unlocking mechanism of the present application can reliably unlock the lock mechanism, can compensate for the structural gap caused by the expansion and contraction of the rope due to the temperature, avoid accidental unlocking of the lock mechanism, and has high safety. The first / second pull rod with length adjustment function supports the front support of the rotating part, and the rotation is flexible, with high safety and reliability. In the present application, a reset structure is formed by a spring, combined with an unlocking pull rod, when the lock mechanism is in the locked and unlocked positions, the unlocking pull rod is loose, which will not affect the performance of the lock mechanism, and has good reliability.

[0042] 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 self-compensating manual unlocking mechanism, characterized in that: include: Driving mechanism, space transmission mechanism, tensioning and resetting mechanism and supporting mechanism, wherein: The driving mechanism comprises an unlocking handle, a rope and at least one pulley support, wherein one end of the unlocking handle is hinged to the fuselage structure, and the other end is connected to a rope, and the rope passes through the pulley support and is connected to the space transmission mechanism; The space transmission mechanism includes a fan-shaped wheel, a rotating shaft, a rocker arm and an unlocking pull rod with adjustable length. The rope is connected to the vertex of the fan-shaped wheel away from the lock handle and is wound in the guide groove of the fan-shaped wheel. The two ends of the rotating shaft are respectively connected to the center of the fan-shaped wheel and one end of the rocker arm. The other end of the rocker arm is connected to the unlocking pull rod, and the unlocking pull rod is connected to the lock mechanism. The tensioning and resetting mechanism comprises a spring bracket, a spring and a roller cover, wherein the spring bracket is mounted on the rocker arm, roller covers are arranged at both ends of the spring bracket, one end of the spring is connected to the spring bracket in the roller cover, and the roller cover is used to protect the spring from accidental disengagement, and the other end of the spring is connected to the lock body structure; The supporting mechanism includes 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, and 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.

2. The self-compensating manual unlocking mechanism according to claim 1, characterized in that: The unlocking handle is hinged to one end of the fuselage structure and is provided with a ball bearing.

3. The self-compensating manual unlocking mechanism according to claim 1, characterized in that: There are two pulley supports, and the rope forms a bending point after passing through the pulley supports, so that the rope is guided and tensioned.

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

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

6. The self-compensating manual unlocking mechanism according to claim 5, characterized in that: The unlocking pull rod includes an outer tube joint, an adjusting screw, a piston rod, a connecting sleeve and a piston rod joint. The adjusting screw is a threaded rod structure with a hollow interior. The outer tube joint is threadedly connected to the interior of one side of the adjusting screw, and the piston rod is threadedly connected to the interior of the other side of the adjusting screw and is limited by a connecting sleeve threadedly connected to the outer side of the adjusting screw, thereby achieving adjustable initial installation length of the unlocking pull rod. The end of the piston rod extending out of the adjusting screw is connected to the piston rod joint.

7. The self-compensating manual unlocking mechanism according to claim 6, characterized in that: The piston rod is located in the adjusting screw and the piston head and the end of the connecting sleeve are provided with bushings, and the piston rod is supported by the bushings to reduce the sliding friction of the piston rod in the adjusting screw and the connecting sleeve.

8. The self-compensating manual unlocking mechanism according to claim 7, characterized in that: By adjusting the use stroke of the piston rod, the unlocking pull rod is matched with the unlocking stroke of the locking mechanism, wherein, after the locking mechanism is unlocked, there is a space between the piston head of the piston rod and the end face of the outer tube joint, and 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.

9. The self-compensating manual unlocking mechanism according to claim 1, characterized in that: Ball bearings are respectively arranged at the positions where the rotating shaft is installed in the rear support and the front support.

10. The self-compensating manual unlocking mechanism according to claim 9, characterized in that: The first pull rod and the second pull rod are both threaded pull rods with adjustable lengths.

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