Aviation storage room door lock

Abstract

An aviation storage room door lock relates to the field of aviation equipment, when an aviation storage room door needs to be locked after being closed, a rotating handle is rotated reversely, a linkage mechanism is utilized to drive a lock pin driving mechanism to move towards an outer side section, a spring releases elastic force, a lock pin is inserted into a corresponding lock seat, and then the aviation storage room door is locked. Due to the fact that two lock pins are arranged in each fixed seat, when one lock pin cannot be driven by the spring due to clamping stagnation, the lock pin on the other side can still be ensured to be inserted into the lock seat. The fault-tolerant mechanism breaks through the limitation that a traditional single-lock-pin door lock is immediately abandoned after being damaged, it is ensured that the door lock can still keep the basic locking and unlocking functions when a local fault occurs, and the redundancy and reliability of equipment operation are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of aviation equipment, and more specifically to an aviation storage room door lock. Background Technology

[0002] Storage compartment door locks in aviation equipment need to meet stringent requirements such as high reliability, high security, and vibration resistance. Existing aviation door locks typically employ a single-pin or double-sided single-pin structure. When the pin malfunctions, such as jamming or breakage, the lock cannot lock or unlock properly, posing a safety hazard. Especially during flight, accidental opening of the storage compartment door could compromise flight safety. Therefore, a door lock structure with redundant design is needed to improve its fault tolerance and reliability. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned technologies, the present invention provides a door lock in which other locking pins can still work normally when a single locking pin is damaged, thus ensuring the security of the door lock.

[0004] The technical solution adopted by this invention to overcome its technical problems is: An aircraft storage room door lock, comprising: Fixed brackets are installed at the top and bottom ends of the aircraft storage compartment door, respectively; Each fixing base has a locking pin that slides vertically on both the left and right sides. Each locking pin is fitted with a spring, one end of which is fixed to the locking pin and the other end is fixed to the fixing base. The knob handle is rotatably mounted on the door of the aircraft storage compartment, and the knob handle is located between two fixed seats; A locking pin drive mechanism is provided between each fixed base; and The linkage mechanism connects each locking pin drive mechanism to the rotary handle. When the rotary handle is turned, the linkage mechanism drives the locking pin drive mechanism to move. The locking pin drive mechanism drives the two locking pins in the corresponding fixed seat to slide synchronously towards the rotary handle. The head of the locking pin disengages from the lock seat in the aviation storage compartment and compresses the corresponding spring.

[0005] To improve guidance, a guide seat is also included, which is fixed to the door of the aircraft storage room and located between the fixed seat and the lock seat, with the locking pin slidably inserted into the corresponding guide seat on the same side.

[0006] Further, the above-mentioned lock pin driving mechanism comprises a connecting rod slidingly inserted into the fixed seat along the vertical direction, a sliding groove arranged on the left and right sides of the fixed seat along the vertical direction respectively, and a driving block rotatably installed on the head end of the connecting rod through a pin shaft, the sliding groove is arranged along the vertical direction, the sliding block is slidingly installed in the sliding groove, the tail end of the lock pin is fixed on the corresponding sliding block on the same side, the connecting rod is located between the two sliding blocks, the left and right sides of the driving block are respectively provided with a hook head, the hook head is in contact with the outer side end surface of the corresponding sliding block on the same side, and the tail end of the connecting rod is connected with the linkage mechanism.

[0007] Further, the above-mentioned linkage mechanism comprises a gear coaxially installed on the knob handle and a connecting block installed on the tail end of the connecting rod, the tail end of the connecting block is connected with a rack along the vertical direction, the gear is arranged between the two racks, and the rack is engaged with the gear.

[0008] In order to limit the maximum displacement of the connecting block, a limiting column installed on the door of the aviation storage room and located between the connecting block and the fixed seat is further arranged, when the connecting block moves to the state that the lock pin is inserted into the corresponding lock seat, the connecting block is in contact with the corresponding limiting column on the same side.

[0009] Preferably, when the rotating handle is rotated to the vertical state, it drives the lock pin driving mechanism to act through the linkage mechanism so that the lock pin is inserted into the corresponding lock seat, and when the rotating handle is rotated to the horizontal state, it drives the lock pin driving mechanism to act through the linkage mechanism so that the lock pin is separated from the corresponding lock seat.

[0010] In order to improve the stability, a guide rod is further arranged on the tail end of the rack along the length direction of the rack, a guide hole is arranged on the connecting block along the vertical direction, and the guide rod of the rack on each connecting block is slidingly inserted into the guide hole of the other connecting block.

[0011] In order to realize the locking at the position, a fixed block installed on the door of the aviation storage room on one side of the connecting block is further arranged, a spring sheet is obliquely arranged on the fixed block, a limiting groove I is arranged on the outer side surface of the head end of the connecting block, a limiting groove II is arranged on the outer side surface of the tail end of the connecting block, when the linkage mechanism drives the lock pin driving mechanism to act so that the lock pin is inserted into the corresponding lock seat, the head end of the spring sheet is inserted into the limiting groove II, and when the linkage mechanism drives the lock pin driving mechanism to act so that the lock pin is separated from the corresponding lock seat, the head end of the spring sheet is inserted into the limiting groove I.

[0012] Preferably, the head end of the spring sheet is bent to form a semicircular convex head, and the limiting groove I and the limiting groove II are both circular arc-shaped grooves matched with the convex head.

[0013] The beneficial effects of the present application are: when the aviation storage room door needs to be locked after being closed, the rotary handle is rotated reversely, the lock pin driving mechanism is driven by the linkage mechanism to move the outer side section, the spring releases the elastic force, and the lock pin is inserted into the corresponding lock seat, so that the aviation storage room door is locked. Since two lock pins are arranged in each fixed seat, when one of the lock pins cannot be driven by the spring due to jamming, the lock pin on the other side can still ensure to be inserted into the lock seat. The fault-tolerant mechanism breaks through the limitation of traditional single lock pin door lock "one loss and one waste", ensures that the door lock can still maintain the basic locking and unlocking functions when there is a local fault, and greatly improves the redundancy and reliability of equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the front view structure diagram of the present application; Figure 2 is the rear view structure diagram of the present application; Figure 3 is the unlocking state diagram of the present application; Figure 4 is the state diagram when a single lock pin fails of the present application; In the figure, 1. Rotary handle 2. Connecting block 3. Fixed seat 4. Connecting rod 5. Lock pin 6. Spring 7. Limiting column 8. Fixed block 9. Limiting groove I 10. Spring piece 11. Knob 12. Guide seat 13. Lock seat 14. Gear 15. Rack 16. Slide block 17. Pin shaft 18. Driving block 19. Limiting groove II 20. Hook head 21. Guide rod. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings Figure 1 to the drawings Figure 4 Further description of the present application.

[0016] The application discloses an aircraft storage room door lock which comprises fixed seats 3 respectively arranged at the upper and lower ends of an aircraft storage room door; lock pins 5 are respectively slidably arranged on the left and right sides of each fixed seat in the vertical direction, a spring 6 is sleeved on each lock pin 5, one end of the spring 6 is fixed on the lock pin 5, and the other end of the spring 6 is fixed on the fixed seat 3; a rotary handle 1 is rotatably arranged on the aircraft storage room door and is arranged between the two fixed seats 3; a lock pin driving mechanism is arranged between each fixed seat 3; and a linkage mechanism is arranged, each lock pin driving mechanism is in transmission connection with the rotary handle 1 through the linkage mechanism, when the rotary handle 1 rotates, the linkage mechanism drives the lock pin driving mechanism to move, the lock pin driving mechanism drives two lock pins 5 in the corresponding fixed seat 3 to synchronously slide towards the rotary handle 1, the head end of the lock pin 5 is separated from a lock seat 13 in the aircraft storage room and compresses the corresponding spring 6. When the aircraft storage room door needs to be opened, the rotary handle 1 is rotated, the linkage mechanism drives the lock pin driving mechanism, the lock pin driving mechanism drives two lock pins 5 in the corresponding fixed seat 3 to slide towards the inner end of the fixed seat 3 and compresses the spring 6, the lock pin 5 is separated from the lock seat 13 at the upper and lower ends of the aircraft storage room, so that the unlocking is realized, and the aircraft storage room door can be opened. When the aircraft storage room door needs to be locked after being closed, the rotary handle 1 is reversely rotated, the linkage mechanism drives the lock pin driving mechanism, the lock pin driving mechanism moves towards the outer end, the spring 6 releases the elastic force, the lock pin 5 is inserted into the corresponding lock seat 13, and the locking of the aircraft storage room door is realized. Since two lock pins 5 are arranged in each fixed seat 3, when one lock pin 5 cannot be driven by the spring 6 due to jamming, the other lock pin 5 can still ensure to be inserted into the lock seat 13. The fault-tolerant mechanism breaks through the limitation of the traditional single-lock-pin door lock “one broken, one useless”, ensures that the door lock can still maintain the basic locking and unlocking functions when a local fault occurs, and greatly improves the redundancy and reliability of equipment operation.

[0017] In an embodiment of the application, a guide seat 12 is further arranged on the aircraft storage room door and between the fixed seat 3 and the lock seat 13, and the lock pin 5 is slidably arranged in the corresponding guide seat 12. The guide seat 12 is arranged to make the lock pin 5 slide in the guide seat 12 when moving, improve the smoothness of the movement of the lock pin 5 under stress, and improve the reliability in use.

[0018] In one embodiment of the present application, the locking pin driving mechanism comprises a connecting rod 4 slidingly inserted into the fixed seat 3 in the vertical direction, a sliding groove arranged on the left and right sides of the fixed seat 3 in the vertical direction respectively, and a driving block 18 rotatably mounted on the head end of the connecting rod 4 through a pin shaft 17, the sliding groove is arranged in the vertical direction, the sliding block 16 is slidingly mounted in the sliding groove, the tail end of the locking pin 5 is fixed on the corresponding sliding block 16 on the same side, the connecting rod 4 is located between the two sliding blocks 16, and the left and right sides of the driving block 18 are respectively provided with a hook head 20, the hook head 20 is in contact with the outer side end surface of the corresponding sliding block 16 on the same side, and the tail end of the connecting rod 4 is connected with the linkage mechanism. When the rotary handle 1 is rotated, it drives the connecting rod 4 to move to the inner side end through the linkage mechanism, the connecting rod 4 drives the driving block 18 to move, the driving block 18 drives the two sliding blocks 16 to slide to the inner side end of the sliding groove of the fixed seat 3 through the hook head 20, so that the locking pin 5 is separated from the lock seat 13, and the door of the aviation storage room is unlocked. When the door of the aviation storage room is closed, the rotary handle 1 is reversely rotated, the connecting rod is driven to move to the outer side end at this time through the linkage mechanism, and the spring 6 releases the elastic force to drive the sliding block 16 to slide to the outer side of the sliding groove of the fixed seat 3 at the same time, until the locking pin 5 is inserted into the lock seat 13, and the door of the aviation storage room is closed and locked. As shown in the accompanying drawings, when one locking pin 5 cannot move to the outer side due to the jamming of the sliding block 16 and the sliding groove, the driving block 18 can be tilted and rotated since the driving block 18 is rotatably connected with the connecting rod 4 through the pin shaft 17, so that the sliding block 16 on the other side can move to the outer side along the sliding groove, and the locking pin 5 on the sliding block 16 can be inserted into the lock seat 13, and the two hook heads 20 of the driving block 18 can ensure that they are in contact with the corresponding sliding blocks 16. Figure 4

[0019] In one embodiment of the present application, the linkage mechanism comprises a gear 14 coaxially mounted on the rotary handle 1 and a connecting block 2 mounted on the tail end of the connecting rod 4, the tail end of the connecting block 2 is connected with a rack 15 in the vertical direction, the gear 14 is arranged between the two racks 15, and the rack 15 is engaged with the gear 14. When the rotary handle 1 is rotated, it drives the gear 14 to rotate, since the gear 14 is engaged with the two racks 15 respectively, the two racks 15 are driven to move synchronously and oppositely respectively, the connecting block 2 moves synchronously and oppositely respectively, the structure is simple, and reliability is allowed.

[0020] In one embodiment of the present application, a limiting column 7 is further mounted on the door of the aviation storage room and located between the connecting block 2 and the fixed seat 3, when the connecting block 2 moves to the state that the locking pin 5 is inserted into the corresponding lock seat 13, the connecting block 2 is in contact with the corresponding limiting column 7 on the same side. When the rotary handle 1 is rotated to move the connecting block 2 to the outer side until the locking pin 5 is inserted into the lock seat 13, the connecting block 2 is in contact with the limiting column 7, the limiting column 7 limits the maximum displacement of the connecting block 2, and the reliability in use is improved.

[0021] ​In one embodiment of the present application, when the rotating handle 1 is turned to the vertical state, it drives the lock pin driving mechanism to work through the linkage mechanism, so that the lock pin 5 is inserted into the corresponding lock seat 13; when the rotating handle 1 is turned to the horizontal state, it drives the lock pin driving mechanism to work through the linkage mechanism, so that the lock pin 5 is separated from the corresponding lock seat 13. The rotating handle only needs to be turned by 90° from the locked state to the unlocked state, and the operation is convenient. The operator can easily know whether the aviation storage room door is locked or unlocked by whether the rotating handle 1 is in the vertical state or the horizontal state, and the convenience of use is improved.

[0022] In one embodiment of the present application, the guide rod 21 is installed at the tail end of the rack 15 along the length direction of the rack 15, and the guide hole is arranged on the connecting block 2 in the vertical direction. The guide rod 21 of the rack 15 on each connecting block 2 is inserted into the guide hole of the other connecting block 2. When the rack 15 moves, it slides in the other connecting block 2 through the guide rod 21, so that the two racks 15 and the two connecting blocks 2 form a stable quadrilateral structure, and the smoothness of the rack 15 when moving is improved, and the situation that the movement is stuck due to the deformation caused by the force is prevented.

[0023] In one embodiment of the present application, a fixed block 8 is further included on the side of the connecting block 2, a spring sheet 10 is obliquely arranged on the fixed block 8, a limiting slot I 19 is arranged on the outer side of the head end of the connecting block 2, and a limiting slot II 19 is arranged on the outer side of the tail end of the connecting block 2. When the linkage mechanism drives the lock pin driving mechanism to act, the lock pin 5 is inserted into the corresponding lock seat 13, and the head end of the spring sheet 10 is inserted into the limiting slot II 19. When the linkage mechanism drives the lock pin driving mechanism to act, the lock pin 5 is separated from the corresponding lock seat 13, and the head end of the spring sheet 10 is inserted into the limiting slot I 19. When the linkage mechanism drives the lock pin driving mechanism to act, the lock pin 5 is inserted into the corresponding lock seat 13, and the aviation storage room door is in the locked state at this time. When it is needed to be unlocked, the rotary handle 1 is rotated, the connecting block 2 moves to the inner side, the spring sheet 10 is deformed under the force, and the head end of the spring sheet 10 is separated from the limiting slot II 19. At this time, the head end of the spring sheet 10 is in contact with the outer side of the connecting block 2. When the connecting block 2 continues to move to separate the lock pin 5 from the lock seat 13, the head end of the spring sheet 10 is inserted into the limiting slot I 19 under the action of the elastic force, and the locked fixation of the connecting block 2 to the position can be realized. When the aviation storage room door needs to be locked again, the rotary handle 1 is rotated, the connecting block 2 moves to the outer side, the spring sheet 10 is deformed under the force, and the head end of the spring sheet 10 is separated from the limiting slot I 19. After the lock pin 5 is inserted into the lock seat 13, the head end of the spring sheet 10 is inserted into the limiting slot II 19 under the action of the elastic force, the locked fixation of the connecting block 2 to the position is realized, and the aviation storage room door can be kept in the locked state or the unlocked state, so that the situation of accidental triggering is prevented. At the same time, the lock pin 5 is prevented from being accidentally lowered due to high-frequency vibration in aviation and other scenes from the transmission source, the core problem that the traditional door lock is easily opened in the vibration environment is completely solved, and the locking stability and safety are significantly improved. Preferably, in the embodiment, the head end of the spring sheet 10 is bent to form a semicircular convex head 11, the limiting slot I 19 and the limiting slot II 19 are circular arc-shaped grooves matched with the convex head 11. Since the head end of the spring sheet 10 is arranged as the semicircular convex head 11, and the limiting slot I 19 and the limiting slot II 19 are circular arc-shaped grooves matched with the convex head 11, the friction between the convex head 11 and the connecting block 2 is reduced when the head end of the spring sheet 10 moves along the connecting block 2, the service life of the parts is improved, and the contact area of the circular arc-shaped spring sheet 10 and the limiting slot I 19 or the limiting slot II 19 can also be increased, and the stability of the locking is improved.

[0024] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or replace some technical features with equivalent replacements within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A lock for an aircraft storage room door, characterized in that, include: Fixed brackets (3) are installed at the upper and lower ends of the aircraft storage room door respectively; Each fixed base has a locking pin (5) that is slidably inserted on the left and right sides in the vertical direction. Each locking pin (5) is fitted with a spring (6). One end of the spring (6) is fixed to the locking pin (5), and the other end is fixed to the fixed base (3). A knob handle (1) is rotatably mounted on the door of the aircraft storage room, and the knob handle (1) is located between two fixed seats (3); A locking pin drive mechanism is provided between each fixed seat (3); as well as The linkage mechanism, each locking pin drive mechanism is connected to the rotating handle (1) through the linkage mechanism. When the rotating handle (1) rotates, the linkage mechanism drives the locking pin drive mechanism to move. The locking pin drive mechanism drives the two locking pins (5) in the corresponding fixed seat (3) to slide synchronously towards the rotating handle (1). The head end of the locking pin (5) disengages from the lock seat (13) in the aviation storage compartment and compresses the corresponding spring (6).

2. The aircraft storage room door lock according to claim 1, characterized in that: It also includes a guide seat (12) fixed to the door of the aircraft storage room and located between the fixed seat (3) and the lock seat (13), with the locking pin (5) slidably inserted into the corresponding guide seat (12) on the same side.

3. The aircraft storage room door lock according to claim 1, characterized in that: The locking pin drive mechanism includes a connecting rod (4) that is slidably inserted into a fixed base (3) in the vertical direction, sliding grooves that are respectively set on the left and right sides of the fixed base (3) in the vertical direction, and a drive block (18) that is rotatably installed on the head end of the connecting rod (4) via a pin (17). The sliding grooves are set in the vertical direction, and the slider (16) is slidably installed in the sliding grooves. The tail end of the locking pin (5) is fixed on the corresponding slider (16) on the same side. The connecting rod (4) is located between the two sliders (16). Hooks (20) are respectively set on the left and right sides of the drive block (18). The hooks (20) are in contact with the outer end face of the corresponding slider (16) on the same side. The tail end of the connecting rod (4) is connected to the linkage mechanism.

4. The aircraft storage room door lock according to claim 3, characterized in that: The linkage mechanism includes a gear (14) coaxially mounted on the knob handle (1) and a connecting block (2) mounted on the tail end of the connecting rod (4). The tail end of the connecting block (2) is connected to a rack (15) in the vertical direction. The gear (14) is located between the two racks (15), and the racks (15) mesh with the gear (14).

5. The aircraft storage room door lock according to claim 4, characterized in that: It also includes a limiting post (7) installed on the door of the aviation storage room and located between the connecting block (2) and the fixed seat (3). When the connecting block (2) moves to the point where the locking pin (5) is inserted into the corresponding locking seat (13), the connecting block (2) contacts the corresponding limiting post (7) on the same side.

6. The aircraft storage room door lock according to claim 1, characterized in that: When the rotating handle (1) is rotated to the vertical position, it drives the locking pin drive mechanism through the linkage mechanism to insert the locking pin (5) into the corresponding lock seat (13). When the rotating handle (1) is rotated to the horizontal position, it drives the locking pin drive mechanism through the linkage mechanism to disengage the locking pin (5) from the corresponding lock seat (13).

7. The aircraft storage room door lock according to claim 1, characterized in that: It also includes a guide rod (21) installed at the tail end of the rack (15) along the length direction of the rack (15). The connecting block (2) is provided with a guide hole in the vertical direction. The guide rod (21) of the rack (15) on each connecting block (2) is inserted into the guide hole of another connecting block (2).

8. The aircraft storage room door lock according to claim 1, characterized in that: It also includes a fixing block (8) installed on the aviation storage room door on one side of the connecting block (2). A spring plate (10) is installed obliquely on the fixing block (8). A limiting groove I (9) is provided on the outer side of the head end of the connecting block (2), and a limiting groove II (19) is provided on the outer side of its tail end. When the linkage mechanism drives the locking pin drive mechanism to move and the locking pin (5) is inserted into the corresponding lock seat (13), the head end of the spring plate (10) is inserted into the limiting groove II (19). When the linkage mechanism drives the locking pin drive mechanism to move and the locking pin (5) is disengaged from the corresponding lock seat (13), the head end of the spring plate (10) is inserted into the limiting groove I (9).

9. The aircraft storage room door lock according to claim 8, characterized in that: The head end of the spring sheet (10) is bent to form a semi-circular protrusion (11), and the limiting groove I (9) and limiting groove II (19) are both arc-shaped grooves that match the protrusion (11).

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