Cabin door locking structure, cabin door and aircraft
The door locking structure, which links the external and internal locking mechanisms, solves the problem of excessive weight and size caused by the linkage structure, realizes the lightweight design of eVTOL, and improves safety and reliability.
Patent Information
- Application Number
- CN202422879521.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-11-25
Smart Images
Figure CN223893942U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of aircraft structural components, and in particular to a door locking structure, a door, and an aircraft. Background Technology
[0002] With the development of eVTOL (Electric Vertical Takeoff and Landing) aircraft, the potential applications of eVTOL in the future include various scenarios such as urban passenger transport, regional passenger transport, cargo transport, personal aircraft, and emergency medical services. eVTOL is powered by batteries, and its range depends on the total battery capacity and the total weight of the aircraft. Therefore, the current development trend of eVTOL is to reduce the overall weight of the aircraft.
[0003] In existing technologies, aircraft door locks are typically formed using a multi-link structure. The simultaneous unlocking of multiple locking pins when the handle is pulled is achieved through the transmission between the links. Furthermore, both the inner and outer handles of the door have a set of link structures, resulting in an excessively heavy overall link structure. In addition, the structural principle is complex and occupies a large amount of space. For eVTOLs, which already have limited weight and space layout, the door lock with a link structure will cause the weight and overall volume of the eVTOL to exceed the budget, making it impossible to achieve the lightweight design of the eVTOL. Utility Model Content
[0004] The main purpose of this utility model is to propose a door locking structure, a door, and an aircraft, aiming to solve the problem of excessive weight and size of door locks with linkage structures in the prior art.
[0005] To achieve the above objectives, the present invention proposes a hatch locking structure, wherein the hatch has a hinged side and three locking sides, the hinged side being hinged to the fuselage of the aircraft, so that the hatch can rotate relative to the fuselage to open or close the hatch door of the aircraft. The hatch locking structure includes:
[0006] An external locking mechanism is provided on the hatch and faces the outside of the hatch;
[0007] An inner locking mechanism is provided on the hatch and faces the inside of the hatch, and the inner locking mechanism is linked with the outer locking mechanism.
[0008] A locking mechanism, comprising a plurality of locking pins, each of which is used to lock with the body when the hatch is closed, and at least one locking pin is provided on each locking side, and each locking pin is connected to the external locking mechanism.
[0009] The inner locking mechanism has a locked state and an unlocked state, and the inner locking mechanism and the outer locking mechanism are unidirectionally linked. The outer locking mechanism can pull all the locking pins to unlock from the body. When the inner locking mechanism switches from the locked state to the unlocked state, it can pull all the locking pins to unlock from the body through the outer locking mechanism. When the inner locking mechanism is in the locked state, the outer locking mechanism can still pull all the locking pins to unlock from the body.
[0010] In one embodiment, the doorway wall is provided with latches corresponding to the positions of the respective locking pins for locking with the corresponding locking pins; the external locking mechanism includes an external handle and an external transmission assembly, the external handle being rotatably disposed on the outside of the door, and the external transmission assembly being disposed within the inner cavity of the door; the external transmission assembly includes multiple external flexible cables, the number of which is consistent with the number of locking pins and corresponds one-to-one, one end of each external flexible cable being connected to the external handle, and the other end of each external flexible cable being connected to the corresponding locking pin, each external flexible cable being used to pull the locking pin to unlock from the corresponding latch when the external handle is rotated.
[0011] In one embodiment, the internal locking mechanism includes an internal handle and an internal transmission assembly. The internal handle is rotatably disposed inside the hatch and can slide along the hatch. The internal transmission assembly is disposed within the inner cavity and includes multiple internal flexible cables. The number of internal flexible cables is the same as the number of external flexible cables and corresponds one-to-one. One end of each internal flexible cable is linked to the corresponding external flexible cable, and the other end of each internal flexible cable is connected to the internal handle. When the internal handle is rotated or when the internal handle is rotated and slid, the internal locking mechanism switches from the locked state to the unlocked state. A portion of the internal flexible cables are used to pull the locking pin away from the latch by the corresponding external flexible cable when the internal handle is rotated, thereby unlocking the corresponding latch. Another portion of the internal flexible cables are used to pull the corresponding locking pin from the corresponding latch by the corresponding external flexible cable when the internal handle is rotated and slid.
[0012] In one embodiment, one end of a portion of the inner flexible cable is linked to the corresponding outer flexible cable via a first transmission assembly, and when the inner handle is rotated, the first transmission assembly drives the corresponding outer flexible cable along the moving direction of the inner flexible cable to pull the locking pin to unlock from the corresponding latch.
[0013] One end of the remaining inner flexible cable is linked to the corresponding outer flexible cable through the second transmission assembly. When the inner handle is rotated, or when the inner handle is rotated and slid, the second transmission assembly drives the corresponding outer flexible cable in the opposite direction to the movement direction of the inner flexible cable, so as to pull the locking pin to unlock from the corresponding latch.
[0014] In one embodiment, the outer handle has a first pivot, and the opposite ends of the outer handle form a first end and a second end that can rotate around the first pivot. Some of the outer flexible cables are first outer flexible cables connected to the first end, and the remaining outer flexible cables are second outer flexible cables connected to the second end.
[0015] The inner handle has a second pivot, and the end of the inner handle away from the second pivot forms a third end that can rotate around the second pivot. Multiple inner flexible cables are connected to the third end, and the inner flexible cable that is linked to the first outer flexible cable through the first transmission component is the first inner flexible cable, and the inner flexible cable that is linked to the second outer flexible cable through the second transmission component is the second inner flexible cable.
[0016] In one embodiment, the first transmission assembly includes a fixed shaft, a first shift fork, and a first fixing member. The fixed shaft and the first fixing member are both mounted on the hatch. The first fixing member is used for the first inner flexible cable to pass through and to provide support for the first inner flexible cable. The first shift fork is sleeved on the fixed shaft and slides in contact with the fixed shaft. The first shift fork is connected to the corresponding first inner flexible cable. The first shift fork is also connected to the corresponding first outer flexible cable. The first outer flexible cable is provided with a first buckle, which is located on the side of the first shift fork facing the outer handle.
[0017] When the inner handle is rotated, the first inner flexible cable drives the first fork to move along the fixed axis toward the third end, so that the first buckle abuts against the first fork and pushes the first outer flexible cable, thereby driving the locking pin connected to the first outer flexible cable to move away from the corresponding latch, so as to unlock the locking pin from the corresponding latch.
[0018] And / or, the second transmission assembly includes a rotating shaft, a second fork, and a second fixing member. The rotating shaft and the second fixing member are both mounted on the hatch. The second fixing member is used for the second inner flexible cable to pass through and to provide support for the second inner flexible cable. The second fork is rotatably connected to the rotating shaft. The two opposite ends of the second fork are a first connecting end and a second connecting end, respectively. The first connecting end is connected to the corresponding second inner flexible cable, and the second connecting end is connected to the corresponding second outer flexible cable. A second buckle is provided on the second inner flexible cable, and a third buckle is provided on the second outer flexible cable. The second buckle and the third buckle are both located on the side of the second fork facing the outer handle.
[0019] When the inner handle is rotated, or when the inner handle is rotated and slid, the second inner flexible cable pushes the first connecting end to swing around the rotation axis toward the third end through the abutment of the second buckle with the first connecting end, and pushes the second connecting end to swing away from the third end through the abutment of the third buckle with the second connecting end, so as to pull the second outer flexible cable and drive the locking pin connected to the second outer flexible cable to move away from the corresponding door latch, so as to unlock the locking pin from the corresponding door latch.
[0020] In one embodiment, the hatch has at least three locking sides, each locking side is provided with a corresponding locking pin, the number of first external flexible cables is at least one, the number of second external flexible cables is at least two, wherein the length of at least one second external flexible cable is greater than the length of the other second external flexible cables;
[0021] The inner handle is used to pull the second connecting end corresponding to the shorter second outer flexible cable in a direction away from the third end when rotating, so as to pull the second outer flexible cable away from the latch through the second connecting end;
[0022] The inner handle is used to pull the second connecting end corresponding to the longer second outer flexible cable in a direction away from the third end when it is rotated and slid in the direction of movement of the third end, so as to pull the second outer flexible cable away from the latch by the second connecting end.
[0023] In one embodiment, the locking pin includes a lock box, a locking rod, and an elastic element. The lock box forms an installation cavity, and the locking rod is located within the installation cavity. The locking rod has a pulling end and a locking end at its two ends. The pulling end of the locking rod passes through the wall of the lock box and is connected to the corresponding external flexible cable. The elastic element is located within the installation cavity, and its two ends abut against the wall of the lock box and the locking end, respectively. The locking end is used to move towards the latch under the elastic action of the elastic element to lock with the corresponding latch, or to be pulled away from the latch by the external flexible cable when the outer handle is rotated to unlock with the corresponding latch.
[0024] In one embodiment, a guide plate is provided inside the mounting cavity, the locking rod is slidably inserted through the guide plate, the elastic element is a spring sleeved outside the locking rod, a locking block is provided at the locking end, the two ends of the spring respectively abut against the guide plate and the locking block, the latch has a locking ring, a locking groove is formed inside the locking ring, a clearance opening is formed on one side of the lock box for the locking ring to enter the mounting cavity, and an arc-shaped guide slope is formed on the side of the locking block facing the clearance opening;
[0025] The locking block is used to move toward the corresponding locking ring under the elastic action of the elastic member and insert into the locking groove to lock with the door bolt, or to move away from the locking ring under the pull of the external transmission assembly and disengage from the locking groove to unlock with the door bolt.
[0026] The latch is also equipped with a Hall sensor, and the locking block is equipped with a magnet for cooperating with the Hall sensor.
[0027] In one embodiment, the hatch is provided with an insertion hole, and the inner handle is provided with a lock hole corresponding to the insertion hole and communicating with the insertion hole. The hatch locking structure also includes a safety pin, which can pass through the lock hole and extend into the insertion hole to abut against the insertion hole to lock the inner handle to the hatch. The safety pin can also be pulled out from the lock hole and the insertion hole to unlock the inner handle from the hatch.
[0028] This utility model also proposes a hatch having a hinged side and at least three locking sides. The hinged side is hinged to the fuselage of the aircraft so that the hatch can rotate relative to the fuselage to open or close the hatch door of the aircraft. The hatch is provided with the aforementioned hatch locking structure.
[0029] This utility model also proposes an aircraft, including a fuselage and the aforementioned hatch, wherein the hatch is provided on one side of the fuselage.
[0030] The technical solution of this utility model involves setting an external locking mechanism and an internal locking mechanism on the aircraft door. The internal locking mechanism and the external locking mechanism are linked, so that the internal locking mechanism does not need to be connected to the locking pin, but only needs to be linked with the nearby external locking mechanism. Unlocking is achieved by pulling the locking pin through the external locking mechanism. The length of the internal locking mechanism is shortened, thereby reducing the volume and weight of the internal locking mechanism, and thus reducing the overall volume and weight of the door locking structure. Moreover, the internal and external locking mechanisms are linked in one direction, so that the internal locking mechanism can only be unlocked from the fuselage by pulling all the locking pins through the external locking mechanism. When the internal locking mechanism is in the locked state, it cannot restrict the external locking mechanism, and the external locking mechanism can still pull all the locking pins to unlock from the fuselage. Therefore, even if the door cannot be opened from the inside of the fuselage through the internal locking mechanism, the door can still be unlocked and opened from the outside through the external locking mechanism. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0032] Figure 1 A schematic diagram of the assembly structure of the hatch and the fuselage provided for this utility model;
[0033] Figure 2 A schematic diagram of the door locking structure provided by this utility model from one perspective;
[0034] Figure 3 A schematic diagram of the door locking structure provided by this utility model from another perspective;
[0035] Figure 4 A schematic diagram of the connection relationship of the first transmission component of the door locking structure provided by this utility model;
[0036] Figure 5 A schematic diagram showing the connection relationship of the second transmission component of the door locking structure provided by this utility model;
[0037] Figure 6 A schematic diagram of the lock box for the door locking structure provided by this utility model;
[0038] Figure 7 A schematic diagram of the inner handle of the door locking structure provided by this utility model from a first-view perspective.
[0039] Explanation of icon numbers:
[0040] 100. Door locking structure; 1. External locking mechanism; 11. External handle; 111. First pivot; 112. First end; 113. Second end; 114. External grip; 115. External connecting rod; 116. External swing arm; 12. External transmission assembly; 13. External flexible cable; 13a. First external flexible cable; 13b. Second external flexible cable; 2. Internal locking mechanism; 21. Internal handle; 211. Second pivot; 212. Third end; 213. Lock hole; 214. Safety pin; 215. Internal grip; 216. Internal connecting rod; 217. Internal swing arm; 22. Internal transmission assembly; 23. Internal flexible cable; 23a. First internal flexible cable; 23b. 24. Secondary flexible cable; 241. First transmission assembly; 242. Fixed shaft; 243. First shift fork; 244. First connector; 25. Second transmission assembly; 251. Rotating shaft; 252. Second shift fork; 253. Second connector; 3. Locking pin mechanism; 31. Locking pin; 32. Lock box; 33. Locking rod; 331. Locking block; 332. Guide slope; 34. Elastic element; 35. Guide plate; 36. Clearance opening; 37. Magnet; 200. Body; 201. Door; 202. Hinge side; 203. Locking side; 204. Doorway; 205. Door latch; 206. Locking ring; 207. Lock groove; 208. Socket; 209. Hall sensor.
[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0045] In existing technologies, aircraft door locks are typically formed using a multi-link structure. The simultaneous unlocking of multiple locking pins when the handle is pulled is achieved through the transmission between the links. Furthermore, both the inner and outer handles inside the cabin are equipped with a set of link structures, resulting in excessive weight of the link structure. In addition, the structural principle is complex and occupies a large amount of space. For eVTOLs, which already have limited weight and space layout, the door lock with a link structure will cause the weight and overall volume of the eVTOL to exceed the budget, making it impossible to achieve the lightweight design of the eVTOL.
[0046] Please combine Figures 1 to 3 To solve the above problems, this utility model proposes a hatch locking structure 100, including: an outer locking mechanism 1, an inner locking mechanism 2, and a locking pin mechanism 3. The hatch 201 has a hinged side 202 and three locking sides 203. The hinged side 202 is hinged to the fuselage 200 of the aircraft, so that the hatch 201 can rotate relative to the fuselage 200 to open or close the hatch door 204 of the fuselage 200. The hatch locking structure 100 includes: an outer locking mechanism disposed on the hatch 201 and facing outward of the hatch 201; an inner locking mechanism disposed on the hatch 201 and facing inward of the hatch 201, and the inner locking mechanism 2 is linked to the outer locking mechanism 1; the locking pin mechanism 3 includes multiple Locking pins 31 are used to lock the hatch 201 to the fuselage 200 when the hatch 201 closes the hatch door 204. Each locking side 203 is provided with at least one locking pin 31, and each locking pin 31 is connected to the outer locking mechanism 1. The inner locking mechanism 2 has a locked state and an unlocked state, and the inner locking mechanism 2 and the outer locking mechanism 1 are linked in one direction. The outer locking mechanism 1 can pull all the locking pins 31 to unlock from the fuselage 200. When the inner locking mechanism 2 switches from the locked state to the unlocked state, it can pull all the locking pins 31 to unlock from the fuselage through the outer locking mechanism 1. When the inner locking mechanism 2 is in the locked state, the outer locking mechanism 1 can still pull all the locking pins 31 to unlock from the fuselage 200.
[0047] It should be noted that the hatch 201 is typically quadrilateral in shape, with its hinged side 202 usually located at the top or on both sides in the horizontal direction. The other three sides, excluding the hinged side 202, form three locking sides 203. Each locking side 203 is provided with at least one locking pin 31. The locking pin 31 is used to lock with the aircraft body 200 to lock the hatch 201 to the body 200. The locking pins 31 on the three locking sides 203 apply locking force from three directions, which improves the locking strength and stability of the hatch 201. The number of locking pins 31 on each locking side 203 is selected according to the size of the hatch 201 and the locking strength required for the specific application.
[0048] The technical solution of this utility model is to set an outer locking mechanism 1 and an inner locking mechanism 2 on the aircraft door 201. The inner locking mechanism 2 is linked with the outer locking mechanism 1, so that the inner locking mechanism 2 does not need to be connected to the locking pin 31, but only needs to be linked with the nearby outer locking mechanism 1. The outer locking mechanism 1 pulls the locking pin 31 to unlock, thereby reducing the length, volume and weight of the inner locking mechanism 2, and thus reducing the overall volume and weight of the door locking structure 100. Furthermore, the inner locking mechanism 2 and the outer locking mechanism 1 are linked in one direction, so that the inner locking mechanism 2 can only be unlocked from the fuselage 200 by pulling all the locking pins 31 through the outer locking mechanism 1. When the inner locking mechanism 2 is in a locked state, it cannot restrict the outer locking mechanism 1, and the outer locking mechanism 1 can still pull all the locking pins 31 to unlock from the fuselage 200. Thus, even if the hatch 201 cannot be opened from the inside of the fuselage 200 through the inner locking mechanism 2, the hatch 201 can still be unlocked and opened from the outside through the outer locking mechanism 1.
[0049] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 6 In one embodiment, the doorway 204 has latches 205 for locking with the corresponding latches 31 at the corresponding positions of the latches 31. The external locking mechanism 1 includes an external handle 11 and an external transmission assembly 12. The external handle 11 is rotatably disposed on the outside of the doorway 201, and the external transmission assembly 12 is disposed in the inner cavity of the doorway 201. The external transmission assembly 12 includes multiple external flexible cables 13. The number of external flexible cables 13 is the same as the number of latches 31 and corresponds one-to-one. One end of each external flexible cable 13 is connected to the external handle 11, and the other end of each external flexible cable 13 is connected to the corresponding latch 31. Each external flexible cable 13 is used to pull the latch 31 to unlock from the corresponding latch 205 when the external handle 11 is rotated.
[0050] Please combine Figures 2 to 5Furthermore, the inner locking mechanism 2 includes an inner handle 21 and an inner transmission assembly 22. The inner handle 21 is rotatably disposed inside the hatch 201 and can slide along the hatch 201. The inner transmission assembly 22 is disposed within the inner cavity and includes multiple inner flexible cables 23. The number of inner flexible cables 23 is the same as the number of outer flexible cables 13 and corresponds one-to-one. One end of each inner flexible cable 23 is linked to the corresponding outer flexible cable 13, and the other end of each inner flexible cable 23 is connected to the inner handle 21. When the inner handle 21 is rotated or when the inner handle 21 is rotated and slid, the inner locking mechanism 2 switches from the locked state to the unlocked state. One part of the inner flexible cable 23 is used to pull the locking pin 31 away from the latch 205 through the corresponding outer flexible cable when the inner handle 21 is rotated, so as to unlock the corresponding latch 205. Another part of the inner flexible cable 23 is used to pull the locking pin 31 away from the latch 205 through the corresponding outer flexible cable 13 when the inner handle 21 is rotated and slid, so as to unlock the corresponding latch 205.
[0051] Understandably, the door locking structure 100 is crucial for the safety and reliability of eVTOL during flight. If the door locking structure 100 fails during flight, and the door 201 opens unexpectedly without instruction, the airflow inside and outside the cabin will instantly become turbulent, causing the aircraft to lose balance and potentially resulting in a major accident. Therefore, the design requires the inner handle 21 to be both rotated and slid simultaneously to unlock all the locking pins 31, preventing the door 201 from opening due to accidental rotation of the inner handle 21, thus improving overall safety.
[0052] It should be noted that the EVTOL aircraft has a small overall size, a large curvature of its hatch, a small internal cavity, and a large transparent area. Conventional rigid linkages cannot accommodate this curvature, cannot be arranged within the confined hatch space, and cannot avoid the transparent area. Therefore, both the external transmission assembly 12 and the internal transmission assembly 22 are designed as flexible cables, further reducing the overall weight and size of the transmission system. Furthermore, the flexible cables are highly deformable, allowing for adjustments to the wiring according to any hatch structure 201, unlike linkages... The structure must be set along a straight line, which greatly improves the convenience and flexibility of the design. When facing the large curvature, small internal cavity and large transparent area of the EVTOL aircraft, the flexible cable-formed external transmission component 12 and internal transmission component 22 can be flexibly routed. While meeting the overall transmission requirements of the door locking structure 100, it will not occupy too much space and weight. It is also easier to adapt to areas with large curvature, and can avoid transparent areas, ensuring the overall aesthetics. At the same time, it also reduces the difficulty of installing the door locking structure 100 on the door 201. After the wiring of the outer flexible cable 13 and the inner flexible cable 23 is set, when the outer handle 11 is rotated, the outer flexible cable 13 moves away from the latch 205 under the action of the outer handle 11, thereby driving the locking pin 31 to move away from the latch 205, thus unlocking the hatch 201 from the fuselage 200. The number of inner flexible cables 23 and outer flexible cables 13 are the same and they correspond one-to-one. When the inner handle 21 is rotated, the inner flexible cable 23 pulls the outer flexible cable 13 to move away from the latch 205, thereby driving the locking pin 31 to move away from the latch 205, thus unlocking the hatch 201 from the fuselage 200.
[0053] In one embodiment, one end of a portion of the inner flexible cable 23 is linked to the corresponding outer flexible cable 13 via a first transmission component 24. When the inner handle 21 is rotated, the first transmission component 24 drives the corresponding outer flexible cable 13 along the moving direction of the inner flexible cable 23 to pull the locking pin 31 to unlock from the corresponding latch 205. One end of the remaining inner flexible cable 23 is linked to the corresponding outer flexible cable 13 via a second transmission component 25. When the inner handle 21 is rotated, or when the inner handle 21 is rotated and slids, the second transmission component 25 drives the corresponding outer flexible cable 13 in the opposite direction to the moving direction of the inner flexible cable 23 to pull the locking pin 31 to unlock from the corresponding latch 205.
[0054] Understandably, the inner handle 21 and the outer handle 11 are usually located near the center of the hatch 201. Therefore, there may be situations where the locking pins 31 are located on opposite sides of the inner handle 21 and the outer handle 11. In this case, turning the outer handle 11 in one direction cannot simultaneously pull the locking pins 31 located on opposite sides away from the latch 205. That is to say, the external flexible cables 13 connected to the locking pins 31 located on opposite sides will be connected to opposite ends of the outer handle 11, i.e., the two external flexible cables 13 are located near the latch 205. The movement direction of the part near the outer handle 11 is opposite. Therefore, part of the inner flexible cable 23 is linked to the corresponding outer flexible cable 13 through the first transmission component 24 to pull the corresponding outer flexible cable 13 in the movement direction of the inner flexible cable 23. The remaining inner flexible cable 23 is linked to the corresponding outer flexible cable 13 through the second transmission component 25 to pull the outer flexible cable 13 in the opposite direction to the movement direction of the inner flexible cable 23, so that the locking pins 31 on the two outer flexible cables 13 with opposite movement directions are pulled out at the same time.
[0055] Please combine Figure 2 , Figure 3 and Figure 7 Furthermore, the outer handle 11 has a first pivot 111, and the two opposite ends of the outer handle 11 form a first end 112 and a second end 113 that can rotate around the first pivot 111. Some of the outer flexible cables are first outer flexible cables 13a connected to the first end 112, and the remaining outer flexible cables are second outer flexible cables 13b connected to the second end 113. The inner handle 21 has a second pivot 211, and the end of the inner handle 21 away from the second pivot 211 forms a third end 212 that can rotate around the second pivot 211. Multiple inner flexible cables are connected to the third end 212, and the inner flexible cable that is linked to the first outer flexible cable 13a through the first transmission component 24 is the first inner flexible cable 23a, and the inner flexible cable that is linked to the second outer flexible cable 13b through the second transmission component 25 is the second inner flexible cable 23b.
[0056] The reasons for connecting the first outer flexible cable 13a to the first end 112 and the second outer flexible cable 13b to the second end 113 have been explained above. Setting the second pivot 211 of the inner handle 21 at one end of the inner handle 21 and connecting all the inner flexible cables to the third end 212 can reduce the volume of the inner handle 21 and thus reduce its weight. On the other hand, the routing of the inner flexible cables, all located at one end, is neater and simpler, and there will be no tangling or other issues, which improves convenience.
[0057] Please combine Figures 2 to 4In one embodiment, each first transmission assembly 24 includes a fixed shaft 241, a first fork 242, and a first fixing member 243. Both the fixed shaft 241 and the first fixing member 243 are mounted on the hatch 201. The first fixing member 243 is used for the passage of the first inner flexible cable 23a and provides support for it. The first fork 242 is sleeved on the outside of the fixed shaft 241 and slides in contact with it. The first fork 242 is connected to the corresponding first inner flexible cable 23a and also to the corresponding first outer flexible cable 13a. The connection is as follows: a first buckle 14a is provided on the first outer flexible cable 13a, and the first buckle 14a is located on the side of the first fork 242 facing the outer handle 11; when the inner handle 21 is rotated, the first inner flexible cable 23a drives the first fork 242 to move along the fixed shaft 241 toward the third end 212, so that the first buckle 14a abuts against the first fork 242 and pushes the first outer flexible cable 13a to drive the locking pin 31 connected to the first outer flexible cable 13a to move away from the corresponding latch 205, so as to unlock the locking pin 31 from the corresponding latch 205.
[0058] The first fork 242 of the first transmission assembly 24 can only slide along the extension direction of the fixed shaft 241, thereby making the movement of the inner flexible cable 23 and the outer flexible cable 13 more stable and precise. Understandably, the first fixing member 243 is usually located at the end of the first inner flexible cable 23a, thus providing support for the first inner flexible cable 23a. Since the first buckle 14a is located on the side of the first fork 242 facing the outer handle 11, when the inner handle 21 rotates, the first inner flexible cable 23a is pulled along the rotation direction of the third end 212. At this time, the movement of the first inner flexible cable 23a drives the first fork 242 to move towards the third end 212. During the movement, the first fork 242 abuts against the first buckle 14a located on the first outer flexible cable 13a. By pushing the first buckle 14a, the first outer flexible cable 13a is pushed towards the third end 212, and the locking pin 31 is pulled out of the latch 205 and unlocked. Understandably, in conjunction with the attached... Figure 2 and Figure 3As can be seen, the first fork 242 is located to the left of the outer handle 11 and the inner handle 21. When the outer handle 11 is rotated, the first outer flexible cable 13a moves directly toward the outer handle 11. Since the first buckle 14a is located on the side of the first fork 242 facing the outer handle 11, the first buckle 14a will not contact the first fork 242. That is to say, only when the inner handle 21 is rotated will the first fork 242 abut against the first buckle 14a and push the first outer flexible cable 13a to move under the pull of the first inner flexible cable 23a. When the outer handle 11 is rotated, the first fork 242 will not contact the first buckle 14a and will not affect the movement of the first outer flexible cable 13a. In other words, the first fork 242 can only be linked with the first outer flexible cable 13a in one direction and can only push the first outer flexible cable 13a toward the third end 212.
[0059] Please combine Figure 2 , Figure 3 and Figure 5 In one embodiment, each second transmission assembly 25 includes a rotating shaft 251, a second fork 252, and a second fixing member 253. Both the rotating shaft 251 and the second fixing member 253 are mounted on the hatch 201. The second fixing member 253 is used for the passage of the second inner flexible cable 23b and provides support for the second inner flexible cable 23b. The second fork 252 is rotatably connected to the rotating shaft 251. The two opposite ends of the second fork 252 are a first connecting end and a second connecting end, respectively. The first connecting end is connected to the corresponding second inner flexible cable 23b, and the second connecting end is connected to the corresponding second outer flexible cable 13b. A second buckle 26 is provided on the second inner flexible cable 23b, and a third buckle 26 is provided on the second outer flexible cable 13b. The second latch 14b, the second latch 26, and the third latch 14b are all located on the side of the second fork 252 facing the outer handle 11. When the inner handle 21 rotates, or when the inner handle 21 rotates and slides, the second inner flexible cable 23b pushes the first connecting end to swing around the rotation axis 251 in the direction of the third end 212 through the abutment of the second latch 26, and pushes the second connecting end to swing away from the third end 212 through the abutment of the third latch 14b, so as to pull the second outer flexible cable 13b through the second connecting end to drive the locking pin 31 connected to the second outer flexible cable 13b to move away from the corresponding latch 205, so as to unlock the locking pin 31 from the corresponding latch 205.
[0060] The second fork 252 of the second transmission assembly 25 can rotate around the rotation shaft 251. Understandably, the first connecting end and the second connecting end located on both sides of the rotation shaft 251 rotate in opposite directions. When the inner handle 21 rotates or rotates and slides, the second inner flexible cable 23b moves toward the third end 212. The second buckle 26 on the second inner flexible cable 23b abuts against the first connecting end of the second fork 252, thereby pushing the first connecting end to rotate toward the third end 212. Since the rotation direction of the second connecting end is opposite to that of the first connecting end, the second connecting end swings away from the third end, that is, swings toward the outer handle 11. Therefore, the second connecting end abuts against the third buckle 14b and pushes the third buckle 14b to move toward the outer handle 11, thereby driving the second outer flexible cable 13b to move toward the outer handle 11, pulling the locking pin 31 on the second outer flexible cable 13b out from the corresponding latch 205 to unlock.
[0061] Understandably, in conjunction with the appendix Figure 2 and Figure 3 As can be seen, the second fork 252 is located between the inner handle 21 and the outer handle 11. When the outer handle 11 rotates, the second outer flexible cable 13b moves directly towards the outer handle 11. Since the third latch 14b is located on the side of the second fork 252 facing the outer handle 11, the third latch 14b does not contact the second fork 252. That is to say, only when the inner handle 21 rotates, under the push of the second latch 26 on the second inner flexible cable 23b, does the second fork 252 move. Only when the two connecting ends swing toward the outer handle 11 will the third buckle 14b on the second outer flexible cable 13b move toward the outer handle 11. When the outer handle 11 itself rotates, the third buckle 14b will not contact the second fork 252, and therefore cannot affect the movement of the second outer flexible cable 13b. That is, the second fork 252 can only be linked with the second outer flexible cable 13b in one direction, and the second fork 252 can only push the second outer flexible cable 13b toward the outer handle 11.
[0062] It can be seen that the first shift fork 242 can only move the position located at Figure 2 Pulling the first outer flexible cable 13a connected to the locking pin 31 on the left side to the right does not restrict the movement of the first outer flexible cable 13a to the right when the outer handle 11 is rotated, while the second shift fork 252 can only move to the right by cooperating with the rotating shaft 251. Figure 2Pulling the second outer flexible cable 13b connected to the locking pin 31 on the right side and bottom to the left cannot restrict the leftward movement of the outer handle 11 of the second outer flexible cable 13b itself when it is turned. That is to say, whether it is the first inner flexible cable 23a or the second inner flexible cable 23b, the corresponding first outer flexible cable 13a and second outer flexible cable 13b can only be pulled when the inner handle 21 is turned. It is impossible to limit the first outer flexible cable 13a and the second outer flexible cable 13b when the outer handle 11 is turned. This ensures that the cabin door 201 can be opened from the outside of the cabin by turning the outer handle 11, regardless of the situation inside the cabin or whether the inner handle 21 is locked or jammed. In the event of an accident that prevents the personnel inside the aircraft from turning and sliding the inner handle 21 to open the cabin door 201 from the inside, the external search and rescue personnel can still open the cabin door 201 from the outside by turning the outer handle 11. The cabin door 201 will not be unable to be opened due to the safety pin 214.
[0063] Please combine Figures 1 to 3 In one embodiment, the hatch 201 has at least three locking sides 203, each locking side 203 is provided with a corresponding locking pin 31, the number of first outer flexible cables 13a is at least one, the number of second outer flexible cables 13b is at least two, and an inner handle 21 is slidably mounted on the hatch 201, wherein the length of at least one second outer flexible cable 13b is greater than the length of the other second outer flexible cables 13b; the inner handle 21 is used to pull the second connecting end corresponding to the shorter second outer flexible cable 13b in a direction away from the third end when rotating, so as to pull the second outer flexible cable 13b in a direction away from the latch 205 through the second connecting end; the inner handle 21 is used to pull the second connecting end corresponding to the longer second outer flexible cable 13b in a direction away from the third end 212 when rotating and sliding in the direction of movement of the third end 212, so as to pull the second outer flexible cable 13b in a direction away from the latch 205 through the second connecting end, so as to unlock the locking end of the locking pin 31 from the latch 205.
[0064] If all the inner flexible cables 23 are taut, when the inner handle 21 is turned, it will unlock all three locking pins 31 and latches 205, thereby unlocking the cabin door 201 from the fuselage 200. However, if the inner handle 21 is accidentally touched during flight, causing it to turn and opening the cabin door 201, it will cause a major safety accident. Therefore, at least one of the two second inner flexible cables 23b will pull the corresponding locking pin 31 and latch 205 to unlock as the third end 212 rotates. The remaining second inner flexible cables 23b are longer and are in a relaxed state. Therefore, when the inner handle 21 is turned, the door will open. When rotated, the longer second inner flexible cable 23b will not pull the corresponding second outer flexible cable 13b, thus not fully unlocking the hatch 201. When unlocking the hatch 201 from the inside, in addition to rotating the inner handle 21, the inner handle 21 needs to be slid and moved before the longer second inner flexible cable 23b will pull the corresponding second outer flexible cable 13b to unlock the locking pin 31. With this design, even if the inner handle 21 is accidentally touched during flight, causing it to rotate, the hatch 201 will not be fully unlocked, greatly improving the overall safety of the hatch locking structure 100.
[0065] Please see Figure 6 In one embodiment, the locking pin 31 includes a locking box 32, a locking rod 33, and an elastic member 34. The locking box 32 forms an installation cavity, and the locking rod 33 is located in the installation cavity. The two ends of the locking rod 33 are a pulling end and a locking end, respectively. The pulling end of the locking rod 33 passes through the box wall of the locking box 32 and is connected to the corresponding external flexible cable 13. The elastic member 34 is located in the installation cavity, and the two ends of the elastic member 34 abut against the box wall and the locking end, respectively. The locking end is used to move toward the opening wall of the hatch 204 under the elastic action of the elastic member 34 to lock with the body 200, or to move away from the opening wall of the hatch 204 under the pull of the external transmission assembly 12 to unlock with the body 200.
[0066] The elasticity of the elastic element 34 presses the locking rod 33 into the opening wall of the hatch 204, thereby achieving a locking engagement between the opening wall of the hatch 204 and the locking pin 31 under normal conditions. The locking rod 33 extends out of the lock box 32 and connects to the outer flexible cable 13. The pulling force of the outer transmission component 12 compresses the elastic element 34, pulling the rod out of the opening wall of the hatch 204, thereby unlocking. The lock box 32 can protect the locking rod 33 and the elastic element 34, preventing wear or damage to the locking rod 33 and the elastic element 34 caused by the external environment, and extending the service life of the locking pin 31.
[0067] Furthermore, the doorway 204 has latches 205 on its opening wall corresponding to the positions of the corresponding locking pins 31 for locking with the corresponding locking pins 31. A guide plate 35 is provided inside the mounting cavity, and the locking rod 33 is slidably passed through the guide plate 35. The elastic element 34 is a spring sleeved on the locking rod 33, and a locking block 331 is provided at the locking end. The two ends of the spring abut against the guide plate 35 and the locking block 331 respectively. The latch 205 has a locking ring 206, and a locking groove 20 is formed inside the locking ring 206. 7. A clearance opening 36 is formed on one side of the lock box 32 for the lock ring 206 to enter the mounting cavity, and an arc-shaped guide slope 332 is formed on the side of the locking block 331 facing the clearance opening 36; the locking block 331 is used to move toward the corresponding lock ring 206 under the elastic action of the elastic member 34 and be inserted into the lock groove 207 to lock with the door bolt 205, or to move away from the lock ring 206 under the pull of the external transmission assembly 12 and disengage from the lock groove 207 to unlock with the door bolt 205.
[0068] The guide plate 35 serves two purposes: firstly, it guides the locking rod 33, preventing it from shifting or tilting during movement and thus failing to align with the locking groove 207 of the latch 205; secondly, the spring abuts against the guide plate 35, reducing the spring length and lowering the weight and cost of the locking pin 31. The arc-shaped guide slope 332 formed by the locking block 331 facing the clearance opening 36 makes it easier for the locking ring 206 to generate a pushing force on the locking block 331 away from the locking ring 206 when the hatch 201 is closed, causing the locking rod 33 and locking block 331 to be pushed away from the locking ring 206. After the locking ring 206 extends into the clearance opening 36, the spring force pushes the locking rod 33 and locking block 331 toward the locking ring 206 and inserts them into the locking groove 207 to achieve locking.
[0069] In one embodiment, a Hall sensor 209 is also provided on the latch 205, and a magnet 37 for cooperating with the Hall sensor 209 is provided on the locking block 331. The magnetic field of the magnet 37 changes as the locking block 331 moves. The change in the external magnetic field causes a shift in the current inside the Hall sensor 209, thereby generating a Hall voltage inside the sensor and converting this voltage into a measurable electrical signal. The Hall sensor 209 then determines whether the locking block 331 is inserted into the latch 205, thereby determining whether the hatch 201 is locked.
[0070] Please see Figure 7In one embodiment, the hatch 201 is provided with an insertion hole 208, and the inner handle 21 is provided with a lock hole 213 corresponding to the insertion hole 208, communicating with the insertion hole 208. The hatch locking structure 100 also includes a safety pin 214, which can pass through the lock hole 213 and extend into the insertion hole 208 to abut against the insertion hole 208, thereby locking the inner handle 21 to the hatch 201. The safety pin 214 can also be pulled out from the lock hole 213 and the insertion hole 208 to unlock the inner handle 21 to the hatch 201. When the safety pin passes through the lock hole 213 and extends into the insertion hole 208 to abut against the insertion hole 208, the inner handle 21 cannot rotate or slide, thereby further preventing accidental contact with the inner handle 21 that would unlock the hatch 201, and further improving security.
[0071] It should also be noted that since the outer handle 11 can directly pull all the locking pins 31 out of the latch 205 to unlock via the outer transmission assembly 12, while the inner handle 21 can only unlock the locking pins 31 from the fuselage 200 by pulling the outer transmission assembly 12 via the inner rotation assembly, even if the inner handle 21 is locked by the safety pin 214, it does not affect the function of turning the outer handle 11 to unlock the hatch 201. In actual application, after the aircraft takes off, it is usually necessary to insert the safety pin 214 into the lock hole 213 and lock the inner handle 21 to prevent the hatch 201 from being opened by accidentally touching the inner handle 21 during flight. In the event of an accident that prevents the personnel inside the aircraft from turning and sliding the inner handle 21 to open the hatch 201 from the inside, the external search and rescue personnel can still open the hatch 201 from the outside via the outer handle 11. There will be no situation where the hatch 201 cannot be opened due to the safety pin 214.
[0072] In one embodiment, the inner handle 21 includes an inner grip 215, an inner connecting rod 216, and an inner rotating arm 217. The inner grip 215 is connected to the inner rotating arm 217 via the inner connecting rod 216, and each inner transmission component 22 is connected to the end of the inner rotating arm 217. The outer handle 11 includes an outer grip 114, an outer connecting rod 115, and an outer rotating arm 116. The outer grip 114 is connected to the outer rotating arm 116 via the outer connecting rod 115, and each outer transmission component 12 is connected to the end of the outer rotating arm 116.
[0073] The design of the inner rotating arm 217 and the outer rotating arm 116 increases the torque of the inner handle 21, allowing the inner and outer flexible cables connected to it to move a longer distance when the inner handle 21 and the outer handle 11 rotate at the same angle. This allows for the selection of smaller inner grips 215 and outer grips 114 while still meeting the travel requirements for unlocking the locking pin 31. Furthermore, the length of the inner rotating arm 217 is greater than the length of the inner handle 21, and the length of the outer rotating arm 116 is greater than the length of the outer handle 11. This further increases the distance that the inner and outer flexible cables can move when rotating at the same angle.
[0074] This utility model also proposes a hatch 201, which has a hinged side 202 and a locking side 203. The hinged side 202 is hinged to the fuselage 200 of the aircraft, so that the hatch 201 can rotate relative to the fuselage 200 to open or close the hatch door 204 of the fuselage 200. The hatch 201 is provided with the aforementioned hatch locking structure 100. The specific structure of the hatch locking structure 100 is as described in the above embodiments. Since this hatch 201 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0075] This utility model also proposes an aircraft, including a fuselage 200 and the aforementioned hatch 201, with a hatch 204 opened on one side of the fuselage 200. The specific structure of the hatch 201 is as described in the above embodiments. Since this aircraft adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0076] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.
Claims
1. A hatch locking structure, characterized in that, The hatch has a hinged side and a locking side. The hinged side is hinged to the fuselage of the aircraft, allowing the hatch to rotate relative to the fuselage to open or close the hatch door. The hatch locking structure includes: An external locking mechanism is provided on the hatch and faces the outside of the hatch; An internal locking mechanism is provided on the hatch and faces the inside of the hatch; A locking mechanism, comprising a plurality of locking pins, each of which is used to lock with the body when the hatch is closed, and at least one locking pin is provided on each locking side, and each locking pin is connected to the external locking mechanism. The inner locking mechanism has a locked state and an unlocked state, and the inner locking mechanism and the outer locking mechanism are unidirectionally linked. The outer locking mechanism can pull all the locking pins to unlock from the body. When the inner locking mechanism switches from the locked state to the unlocked state, it can pull all the locking pins to unlock from the body through the outer locking mechanism. When the inner locking mechanism is in the locked state, the outer locking mechanism can still pull all the locking pins to unlock from the body.
2. The hatch locking structure as described in claim 1, characterized in that, The doorway has latches corresponding to the positions of the locking pins for locking with the corresponding locking pins. The external locking mechanism includes an external handle and an external transmission assembly. The external handle is rotatably disposed on the outside of the door, and the external transmission assembly is disposed inside the cavity of the door. The external transmission assembly includes multiple external flexible cables, the number of which corresponds to the number of locking pins. One end of each external flexible cable is connected to the external handle, and the other end of each external flexible cable is connected to the corresponding locking pin. Each external flexible cable is used to pull the locking pin to unlock from the corresponding latch when the external handle is rotated.
3. The hatch locking structure as described in claim 2, characterized in that, The internal locking mechanism includes an internal handle and an internal transmission assembly. The internal handle is rotatably disposed inside the hatch and can slide along the hatch. The internal transmission assembly is disposed within the inner cavity and includes multiple internal flexible cables. The number of internal flexible cables is the same as the number of external flexible cables and corresponds one-to-one. One end of each internal flexible cable is linked to the corresponding external flexible cable, and the other end of each internal flexible cable is connected to the internal handle. When the internal handle is rotated or when the internal handle is rotated and slid, the internal locking mechanism switches from the locked state to the unlocked state. A portion of the internal flexible cables are used to pull the locking pin away from the latch by the corresponding external flexible cable when the internal handle is rotated, thereby unlocking the corresponding latch. Another portion of the internal flexible cables are used to pull the corresponding locking pin from the corresponding latch by the corresponding external flexible cable when the internal handle is rotated and slid.
4. The hatch locking structure as described in claim 3, characterized in that, One end of the inner flexible cable is linked to the corresponding outer flexible cable through a first transmission component, and when the inner handle is rotated, the first transmission component drives the corresponding outer flexible cable along the moving direction of the inner flexible cable to pull the locking pin to unlock from the corresponding latch. One end of the remaining inner flexible cable is linked to the corresponding outer flexible cable through the second transmission assembly. When the inner handle is rotated, or when the inner handle is rotated and slid, the second transmission assembly drives the corresponding outer flexible cable in the opposite direction to the movement direction of the inner flexible cable, so as to pull the locking pin to unlock from the corresponding latch.
5. The hatch locking structure as described in claim 4, characterized in that, The outer handle has a first pivot, and the two opposite ends of the outer handle form a first end and a second end that can rotate around the first pivot. Some of the outer flexible cables are first outer flexible cables connected to the first end, and the rest of the outer flexible cables are second outer flexible cables connected to the second end. The inner handle has a second pivot, and the end of the inner handle away from the second pivot forms a third end that can rotate around the second pivot. Multiple inner flexible cables are connected to the third end, and the inner flexible cable that is linked to the first outer flexible cable through the first transmission component is the first inner flexible cable, and the inner flexible cable that is linked to the second outer flexible cable through the second transmission component is the second inner flexible cable.
6. The hatch locking structure as described in claim 5, characterized in that, The first transmission assembly includes a fixed shaft, a first shift fork, and a first fixing member. The fixed shaft and the first fixing member are both mounted on the hatch. The first fixing member is used for the first inner flexible cable to pass through and to provide support for the first inner flexible cable. The first shift fork is sleeved on the fixed shaft and slides in contact with the fixed shaft. The first shift fork is connected to the corresponding first inner flexible cable. The first shift fork is also connected to the corresponding first outer flexible cable. The first outer flexible cable is provided with a first buckle, which is located on the side of the first shift fork facing the outer handle. When the inner handle is rotated, the first inner flexible cable drives the first fork to move along the fixed axis toward the third end, so that the first buckle abuts against the first fork and pushes the first outer flexible cable, thereby driving the locking pin connected to the first outer flexible cable to move away from the corresponding latch, so as to unlock the locking pin from the corresponding latch. And / or, the second transmission assembly includes a rotating shaft, a second fork, and a second fixing member. The rotating shaft and the second fixing member are both mounted on the hatch. The second fixing member is used for the second inner flexible cable to pass through and to provide support for the second inner flexible cable. The second fork is rotatably connected to the rotating shaft. The two opposite ends of the second fork are a first connecting end and a second connecting end, respectively. The first connecting end is connected to the corresponding second inner flexible cable, and the second connecting end is connected to the corresponding second outer flexible cable. A second buckle is provided on the second inner flexible cable, and a third buckle is provided on the second outer flexible cable. The second buckle and the third buckle are both located on the side of the second fork facing the outer handle. When the inner handle is rotated, or when the inner handle is rotated and slid, the second inner flexible cable pushes the first connecting end to swing around the rotation axis toward the third end through the abutment of the second buckle with the first connecting end, and pushes the second connecting end to swing away from the third end through the abutment of the third buckle with the second connecting end, so as to pull the second outer flexible cable and drive the locking pin connected to the second outer flexible cable to move away from the corresponding door latch, so as to unlock the locking pin from the corresponding door latch.
7. The hatch locking structure as described in claim 6, characterized in that, The hatch has at least three locking sides, each locking side is provided with a corresponding locking pin, the number of first external flexible cables is at least one, the number of second external flexible cables is at least two, wherein the length of at least one second external flexible cable is greater than the length of the other second external flexible cables; The inner handle is used to pull the second connecting end corresponding to the shorter second outer flexible cable in a direction away from the third end when rotating, so as to pull the second outer flexible cable away from the latch through the second connecting end; The inner handle is used to pull the second connecting end corresponding to the longer second outer flexible cable in a direction away from the third end when it is rotated and slid in the direction of movement of the third end, so as to pull the second outer flexible cable away from the latch by the second connecting end.
8. The hatch locking structure as described in any one of claims 2 to 7, characterized in that, The locking pin includes a lock box, a locking rod, and an elastic element. The lock box forms an installation cavity, and the locking rod is located within the installation cavity. The two ends of the locking rod are a pulling end and a locking end, respectively. The pulling end of the locking rod passes through the wall of the lock box and is connected to the corresponding external flexible cable. The elastic element is located within the installation cavity, and its two ends abut against the wall of the box and the locking end, respectively. The locking end is used to move towards the latch under the elastic action of the elastic element to lock with the corresponding latch, or to be pulled away from the latch by the external flexible cable when the outer handle is turned to unlock with the corresponding latch.
9. The hatch locking structure as described in claim 8, characterized in that, A guide plate is provided inside the mounting cavity, and the locking rod is slidably inserted through the guide plate. The elastic element is a spring sleeved outside the locking rod. A locking block is provided at the locking end. The two ends of the spring abut against the guide plate and the locking block, respectively. The latch has a locking ring with a locking groove formed inside. A clearance opening is formed on one side of the lock box for the locking ring to enter the mounting cavity, and an arc-shaped guide slope is formed on the side of the locking block facing the clearance opening. The locking block is used to move toward the corresponding locking ring under the elastic action of the elastic member and insert into the locking groove to lock with the door bolt, or to move away from the locking ring under the pull of the external transmission assembly and disengage from the locking groove to unlock with the door bolt. The latch is also equipped with a Hall sensor, and the locking block is equipped with a magnet for cooperating with the Hall sensor.
10. The hatch locking structure as described in any one of claims 3 to 7, characterized in that, The hatch is provided with an insertion hole, and the inner handle is provided with a lock hole corresponding to the insertion hole and communicating with the insertion hole. The hatch locking structure also includes a safety pin, which can pass through the lock hole and extend into the insertion hole to abut against the insertion hole to lock the inner handle to the hatch. The safety pin can also be pulled out from the lock hole and the insertion hole to unlock the inner handle from the hatch.
11. A hatch, characterized in that, The hatch has a hinged side and at least three locking sides, the hinged side being hinged to the fuselage of the aircraft so that the hatch can rotate relative to the fuselage to open or close the hatch door of the aircraft, and the hatch is provided with a hatch locking structure as described in any one of claims 1 to 10.
12. An aircraft, characterized in that, It includes a fuselage and a hatch as described in claim 11, wherein the hatch is provided on one side of the fuselage.