Airplane double-pull-rod storage cabinet door lock

Abstract

The airplane double-pull-rod storage cabinet door lock comprises a lock cylinder mechanism and a shell assembly, the lock cylinder mechanism and the shell assembly comprise a lock block, the lock block is provided with a lock cylinder protection cover and a back main plate, and the lock cylinder protection cover and the back main plate are connected through fixing screws and form a protection cover covering a lock cylinder; an outer lock disc is fixed on the back main plate through a screw; the handle assembly comprises an upper handle and a lower handle which are symmetrically arranged on the outer lock disc; the connecting rod transmission mechanism comprises a connecting shaft fixed to the back main plate, a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are rotationally connected through the connecting shaft, the second connecting rod is connected with the bottom ends of the vertical pull rods through rotating blocks, and the first connecting rod is connected with the transverse pull rods through rotating blocks. The lock cylinder protection cover and the back main plate form double-layer protection, invasion of a lock picking tool is effectively resisted, the door lock is provided with the double handles, the single handle controls opening and closing of the single-side lock bolt, the double locking function is achieved, the upper spring bolt and the lower spring bolt achieve synchronous reverse movement through the symmetrical connecting rods, the bidirectional locking requirement of a door body is met, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft lockers, and in particular to an aircraft double-trolley locker door lock. Background Art

[0002] With the rapid development of aviation technology, the design of aircraft interior facilities increasingly emphasizes lightweight, high reliability and easy operation. As an important functional component of the cabin, the door lock mechanism of the locker must meet the stringent requirements of aviation conditions: on the one hand, it must have anti-vibration and impact resistance to adapt to the flight environment; on the other hand, it must reduce the weight of the structure through a compact design, while taking into account the durability under frequent opening and closing.

[0003] However, the existing aircraft locker door lock technology still has the following outstanding problems:

[0004] 1. Structural complexity and maintenance difficulties

[0005] Traditional aircraft locker locks mostly use a single-sided bolt with an independent handle design, and their transmission mechanism relies on multi-stage gears or complex connecting rods, resulting in a large number of parts and high assembly precision requirements. This type of structure not only increases the weight of the lock body, but also easily becomes stuck due to component wear after frequent use. A large number of components need to be disassembled for maintenance, which seriously affects the efficiency of cabin equipment operation and maintenance.

[0006] 2. One-way locking and security limitations

[0007] Most existing locks are only equipped with one-way lock tongues, which causes concentrated force on the cabinet door when it is closed. During aircraft takeoff and landing or turbulence, the lock tongue on one side is easily deformed and failed due to excessive force, posing a risk of accidental opening of the cabinet door.

[0008] 3. Insufficient reset performance and durability

[0009] The handle reset of traditional locks mostly relies on a single spring structure, which is prone to spring fatigue after long-term use, resulting in delayed or stuck handle return. At the same time, the transmission mechanism lacks a buffer design, and the impact generated when the handle is quickly operated can easily cause the connecting rod to deform or the connector to loosen, further reducing the life of the lock.

[0010] 4. Aviation adaptability defects

[0011] Most existing locks use a common lock body structure and are not optimized for aviation scenarios. For example, the lock core is weakly protected and cannot resist collision with luggage or intrusion with tools; the material selection does not take into account both lightness and strength, resulting in a bulky lock body or insufficient impact resistance; in addition, the lack of modular design makes it impossible to quickly adapt to the installation requirements of cabinet doors of different sizes.

[0012] In view of the above problems, it is urgent to develop a double-trolley door lock specially used for aircraft lockers to meet the technical requirements of the aviation field for high-reliability locks. Summary of the Invention

[0013] (1) Technical Problem to be Solved

[0014] In view of the deficiencies of the prior art, the present invention provides an aircraft double-rod locker door lock to solve the technical problem of stable locking.

[0015] (2) Technical Solution

[0016] To achieve the above object, the present invention is realized through the following technical solutions:

[0017] An aircraft double-rod locker door lock includes:

[0018] a lock core mechanism, a housing assembly, a handle assembly, a connecting rod transmission mechanism, and a lock tongue assembly;

[0019] The lock core mechanism and the housing assembly include a lock block, which is provided with a lock core protection cover and a back main board. The two are connected by fixing screws to form a protective cover covering the lock core for isolating external impacts; the back main board is fixed with an outer lock disc by screws. The outer lock disc serves as the installation base for the upper and lower handles, providing support and fixation for the handle assembly;

[0020] The handle assembly includes an upper handle and a lower handle symmetrically arranged on the outer lock disc. The two are rotatably installed on the outer lock disc through a handle rotating shaft with a built-in handle spring. The handle spring drives the handle to automatically reset to the initial position. Gaskets are provided on both sides of the handle rotating shaft to reduce rotational wear.

[0021] Preferably, the connecting rod transmission mechanism includes a connecting shaft fixed on the back main board, and a first connecting rod and a second connecting rod rotatably connected through the connecting shaft to form a linkage to transmit the handle movement; the second connecting rod is hinged to the bottom ends of the upper and lower pull rods through a rotating block, and the first connecting rod is hinged to the transverse pull rod through a rotating block.

[0022] Preferably, the transverse pull rod is linked with the pull rod connecting block at the rear end of the handle through a first fixed latch to convert the rotational movement of the handle into the horizontal linear movement of the transverse pull rod.

[0023] Preferably, the lock tongue assembly includes an upper lock block and a lower lock block symmetrically arranged. The upper lock block includes an upper lock tongue, which is hinged to the upper joint of the upper pull rod through a third fixed latch, and the upper pull rod is hinged to the lower joint of the upper pull rod through a second fixed latch to realize the lifting and locking of the lock tongue driven by the upper and lower pull rods.

[0024] Preferably, the rotating block is composed of a flat head shaft, a gasket, and an open pin for realizing multi-directional rotational connection, and the axial displacement of the rotating block is locked through a first fixed latch.

[0025] Preferably, a spring is sleeved outside the transverse pull rod for providing an elastic restoring force or absorbing movement impacts during the transmission process.

[0026] Preferably, a bushing is sleeved on the end of the connecting shaft to reduce the rotational friction between the connecting shaft and the connecting rod and improve the transmission efficiency.

[0027] Preferably, the upper locking block and the lower locking block are linked by symmetrically arranged upper and lower pull rods to achieve synchronous reverse movement of the upper and lower locking tongues to adapt to the two-way locking requirement.

[0028] (III) Beneficial effects

[0029] Shock resistance and anti-theft: The lock core protection cover and the back main board form a double-layer protection, effectively resisting the intrusion of lock-picking tools. The door lock is provided with two handles, and each handle controls the opening and closing of the single-sided lock bolt, with a double locking function. The internal structure is reliable and can be applied to various cabinet doors of the aircraft.

[0030] Smooth operation: The bushing and the gasket reduce the transmission friction, and the handle spring and the spring provide double reset forces to ensure that the handle returns quickly without jamming.

[0031] Reliable two-way locking: The upper and lower locking tongues achieve synchronous reverse movement through symmetric connecting rods, which is suitable for the two-way locking requirement of the door body, improves the safety, has high strength, and can better fix the high cabinet door.

[0032] The present invention designs an aircraft double-pull rod locker door lock. The door lock is provided with two handles, and each handle realizes the opening and closing of the single-sided lock bolt. The upper handle controls the opening and closing of the upper lock bolt, and the lower handle controls the opening and closing of the lower lock bolt to achieve a double locking function; it can maintain the function without failure under the inertial load condition of the aircraft's emergency landing. Brief description of the drawings

[0033] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present invention and combines with the drawings to describe in detail as follows.

[0034] Figure 1 It is the overall structure diagram of an aircraft double-pull rod locker door lock of the present invention;

[0035] Figure 2 It is the installation structure diagram of an aircraft double-pull rod locker door lock of the present invention;

[0036] Figure 3 It is the partial enlarged structure diagram of the lock block in an aircraft double-pull rod locker door lock of the present invention;

[0037] Figure 4 It is the structure diagram of the lock block in an aircraft double-pull rod locker door lock of the present invention;

[0038] Figure 5 It is the exploded structure diagram of the upper lock block in an aircraft double-pull rod locker door lock of the present invention;

[0039] Figure 6 This is an exploded view structure diagram of the lock block in a double-rod locker door lock for an aircraft according to the present invention.

[0040] Legend:

[0041] 1. Lock block; 11. Lock core protection cover; 12. Upper handle; 13. Handle spring; 14. Lower handle; 15. Handle rotating shaft; 16. Outer lock disc; 17. Rod connecting block; 18. First fixed bolt; 19. Rotating block; 20. Second fixed bolt; 21. Lower joint of the upper rod; 22. Bushing; 23. Connecting shaft; 24. First connecting rod; 25. Second connecting rod; 26. Horizontal rod; 27. Spring; 28. Back main board; 29. Fixed screw;

[0042] 3. Upper lock block; 31. Upper lock tongue; 32. Gasket; 33. Split pin; 34. Rotating block; 35. Upper joint of the upper rod; 36. Third fixed bolt; 4. Upper and lower rods. Specific implementation manner

[0043] In the embodiment of the present application, by providing a double-rod locker door lock for an aircraft, the problem of stable locking in the prior art is solved. The lock core protection cover and the back main board form a double-layer protection, effectively resisting the intrusion of lock-picking tools. The door lock is provided with double handles, and a single handle controls the opening and closing of the single-side lock bolt, with a double locking function and a reliable internal structure.

[0044] Embodiment 1

[0045] The technical solution in the embodiment of the present application is to solve the problem of stable locking in the above-mentioned locker, and the general idea is as follows:

[0046] In view of the problems existing in the prior art, the present invention provides a double-rod locker door lock for an aircraft, including

[0047] a lock core mechanism, a housing assembly, a handle assembly link transmission mechanism, and a lock tongue assembly,

[0048] Lock core mechanism and housing assembly

[0049] The lock block 1 is the main frame of the overall lock structure, including a lock core protection cover 11, which is connected to the back main board 28 through a fixed screw 29. The protective cover covering the lock core is formed by the lock core protection cover 11 and the back main board 28. The back main board 28 has an outer lock disc 16 through screws, which is used as the base for fixing the upper and lower handles.

[0050] Handle assembly

[0051] The outer lock disc 16 is symmetrically provided with an upper handle 12 and a lower handle 14. The upper handle 12 and the lower handle 14 are rotatably mounted on the outer lock disc 16 through a handle rotating shaft 15. A handle spring 13 is built into the handle rotating shaft 15 to achieve automatic reset of the handle. Gaskets are provided at the positions where the handle rotating shaft 15 is mounted on both sides of the handle spring 13 to reduce rotational wear. The rotating block 19 includes a combination of a flat head shaft, a gasket and an opening pin. The first fixed bolt 18 is used to lock the rotating block 19.

[0052] Linkage mechanism

[0053] The back main board 28 is fixedly installed with a connecting shaft 23. A first connecting rod 24 and a second connecting rod 25 are rotatably connected through the connecting shaft 23 to form a linkage structure. Installation holes are provided at both ends of the first connecting rod 24 and the second connecting rod 25. The second connecting rod 25 is rotatably installed at the bottom end of the upper and lower pull rods 4 through a rotating block 19. The other end of the first connecting rod 24 is rotatably installed with a transverse pull rod 26 through a rotating block 19. The transverse pull rod 26 is connected to the pull rod connecting block 17 at the rear end of the handle through a first fixed bolt 18 and moves horizontally along with the movement of the handle.

[0054] A spring 27 is sleeved outside the transverse pull rod 26 and is arranged in the transmission mechanism to assist in resetting or buffering.

[0055] Lock tongue assembly

[0056] The structures of the upper lock block 3 and the lower lock block are symmetrical. Taking the upper lock block 3 as an example:

[0057] The upper lock block 3 includes an upper lock tongue 31. The upper lock tongue 31 is connected to the upper joint 35 of the upper pull rod through a third fixed bolt 36 to achieve up and down movement;

[0058] The upper pull rod 4 is connected with a lower joint 21 of the upper pull rod through a second fixed bolt 20. The structure of the lower pull rod is the same. The following description will take the upper pull rod 4 as an example. The bushing 22 is sleeved on the end of the connecting shaft 23 to reduce rotational friction.

[0059] Working principle

[0060] Unlocking process: When the user presses down the upper handle 12, the pull rod connecting block 17 drives the transverse pull rod 26 to move horizontally to the right, compressing the spring 27; the transverse pull rod 26 pulls the first connecting rod 24 to swing clockwise around the connecting shaft 23, and the second connecting rod 25 swings counterclockwise accordingly, driving the upper pull rod 4 to move downward and the upper lock tongue 31 to retract; at the same time, the lower pull rod moves upward under the reverse linkage effect, and the lower lock tongue extends, completing unilateral unlocking and locking on the other side, which is applicable to two-way operation inside / outside the door.

[0061] Reset process: After releasing the handle, the handle spring 13 drives the upper handle 12 to return to its original position. The transverse pull rod 26 moves leftward with the assistance of the spring 27, driving the lock tongue to return to the initial locked state.

[0062] Operating handle: When the upper handle 12 or the lower handle 14 is toggled outwards, the rear end thereof pushes the connecting block 17 of the pull rod to move backward, driving the horizontal pull rod 26 to move horizontally backward.

[0063] Linkage drive: The horizontal pull rod 26 drives the first link 24 to rotate clockwise around the connecting shaft 23. Since the connecting shaft 23 is square, the second link 25 rotates synchronously, forcing the upper joint 35 of the upper pull rod to move downward.

[0064] Lock tongue control: The upper joint 35 of the upper pull rod drives the upper lock tongue 31 to move downward through the upper and lower pull rods 4 to release the locking of the cabinet door. After the handle is released, the handle spring 13 resets, and the lock tongue rebounds and closes.

[0065] To sum up:

[0066] Impact resistance and anti-theft: The lock core protection cover 11 and the back main board 28 form a double-layer protection, effectively resisting the intrusion of lock-picking tools. The door lock is provided with double handles, and each handle controls the opening and closing of the single-side lock bolt, with a double locking function. The internal structure is reliable and can be applied to various cabinet doors of the aircraft.

[0067] Smooth operation: The bushings 22 and the gaskets reduce the transmission friction, and the handle spring 13 and the spring 27 provide double reset forces to ensure that the handle returns quickly and without jamming.

[0068] Reliable two-way locking: The upper and lower lock tongues achieve synchronous reverse movement through the symmetric linkages, which meets the requirements of two-way locking of the door body, improves the safety, has high strength, and can better fix the high cabinet door.

[0069] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An aircraft double-rod locker door lock, characterized in that Comprising: A lock core mechanism, a housing assembly, a handle assembly, a link transmission mechanism, and a lock tongue assembly; The lock core mechanism and the housing assembly include a lock block (1), the lock block (1) is provided with a lock core protective cover (11) and a back main board (28), and the two are connected by fixing screws (29) to form a protective cover covering the lock core; the back main board (28) is fixed with an outer lock disc (16) by screws, and the outer lock disc (16) serves as an installation base for the upper and lower handles; The handle assembly includes an upper handle (12) and a lower handle (14) symmetrically arranged on the outer lock disc (16); The link transmission mechanism includes a connecting shaft (23) fixed on the back main board (28), and a first link (24) and a second link (25) rotatably connected through the connecting shaft (23).

2. The aircraft double-rod locker door lock according to claim 1, characterized in that, The second link (25) is connected to the bottom end of the upper and lower pull rods (4) through a rotating block (19), and the first link (24) is connected to the lateral pull rod (26) through a rotating block (19); the lateral pull rod (26) is linked with a pull rod connecting block (17) at the rear end of the handle through a first fixed latch (18).

3. The double-rod locker door lock for an aircraft according to claim 1, characterized in that Both are rotatably installed on the outer lock disc (16) through a handle rotating shaft (15) with a built-in handle spring (13), and gaskets are provided on both sides of the handle rotating shaft (15).

4. The double-tie rod locker door lock for an aircraft according to claim 1, characterized in that, It further includes a lock tongue assembly, the lock tongue assembly includes a symmetrically arranged upper lock block (3) and a lower lock block, the upper lock block (3) includes an upper lock tongue (31), which is connected to an upper pull rod upper joint (35) through a third fixed latch (36), and the upper pull rod (4) is connected to an upper pull rod lower joint (21) through a second fixed latch (20).

5. The aircraft double-tie rod locker door lock according to claim 1, characterized in that, The gaskets of the handle rotating shaft (15) are arranged on both sides of the handle spring (13), and the rotating block (19) is composed of a flat head shaft, a gasket, and an open pin, and is locked through a first fixed latch (18).

6. The aircraft double pull rod locker door lock according to claim 1, characterized in that, The gaskets of the handle rotating shaft (15) are arranged on both sides of the handle spring (13), and the rotating block (19) is composed of a flat head shaft, a gasket, and an open pin, and is locked through a first fixed latch (18).

7. The aircraft double-rod locker door lock according to claim 1, characterized in that, A bushing (22) is sleeved at the end of the connecting shaft (23) to reduce rotational friction.

8. The aircraft double-tie rod locker door lock according to claim 1, characterized in that The upper pull rod (4) and the lower pull rod have a symmetrical structure, and the upper lock block (3) and the lower lock block achieve synchronous movement through the linkage of the upper and lower pull rods.

Images