Aircraft and its hatch

Abstract

This application relates to the field of aircraft technology and discloses an aircraft and its cabin door. The aircraft cabin door of this application includes a door frame, an upper cabin door, a lower cabin door, and a door locking mechanism. The upper and lower cabin doors are rotatably disposed within the door frame to open or close the door frame entrance / exit, forming an unfolded state and a retracted state. The lower part of the upper cabin door has a lower protrusion, and the upper part of the lower cabin door has an upper protrusion. When the upper and lower cabin doors are in the retracted state, the lower and upper protrusions are configured to at least partially overlap in the horizontal direction and be staggered in the vertical direction. The door locking mechanism is used to lock or unlock the upper and lower cabin doors. This aircraft cabin door adopts a double-opening design, requiring only one door locking mechanism to open or lock both doors. The combined action of both mechanisms maximizes the cabin opening area, providing passengers with ample space to enter and exit.

Description

Technical Field

[0001] This application relates to the field of powered aircraft technology, and more particularly to an aircraft and its hatch. Background Technology

[0002] In the general aviation sector, the stringent restrictions on cabin door size have become a significant pain point for passenger experience. Taking common models such as the Cessna 172 or Pilatus PC-12 as examples, their main cabin doors are generally less than 55 centimeters wide and only about 1.6 meters high. This means that passengers taller than 1.8 meters must maintain a "head-down" posture, while passengers carrying standard carry-on luggage (55×40×20 centimeters) have to go through a process similar to a "security checkpoint challenge": first, unload the luggage, squeeze sideways into the door frame, and then reload it. The whole process can take more than three times longer than that of ordinary passenger planes. Utility Model Content

[0003] The purpose of this application is to provide an aircraft and its cabin door. The cabin door of the aircraft in this application adopts a double-opening design of upper and lower cabin doors. Only one door lock mechanism is needed to open or lock the upper and lower cabin doors. The two work together to maximize the cabin door opening area and give passengers ample space to move in and out.

[0004] To address the aforementioned technical problems, this application provides an aircraft hatch, comprising: a door frame, an upper hatch, a lower hatch, and a door locking mechanism; the upper hatch and the lower hatch are rotatably disposed within the door frame to open or close the door frame entrance / exit, forming an unfolded state and a retracted state; the lower hatch has a lower protrusion at its bottom, and the lower hatch has an upper protrusion at its top; when the upper hatch and the lower hatch are in the retracted state, the lower protrusion and the upper protrusion are configured to at least partially overlap in the horizontal direction and be offset from each other in the vertical direction; the door locking mechanism is used to lock or unlock the upper hatch and the lower hatch.

[0005] This application provides an aircraft including the aforementioned aircraft hatch.

[0006] Optionally, the lower protrusion is located on the bottom outer side of the upper hatch, the upper protrusion is located on the top inner side of the lower hatch, and the door lock mechanism is located on the upper hatch.

[0007] Optionally, a telescopic strut is connected between the upper hatch and the door frame. When the upper hatch is closed, the telescopic strut is compressed and abuts against the upper hatch in the vertical direction, thereby pressing the upper hatch tight. When the upper hatch is pushed outward, and the angle between the upper hatch and the telescopic strut is greater than a preset angle, the telescopic strut automatically pushes the upper hatch outward during the pressure release process.

[0008] Optionally, the lower hatch is provided with a ball-operated mechanism, which includes a ball and a biasing component. The door frame is provided with a ball-operated groove that matches the ball-operated mechanism. When the lower hatch enters the door frame, the ball is squeezed from outside the ball-operated groove into the ball-operated groove, thereby locking the lower hatch onto the door frame.

[0009] Optionally, the lower cabin door includes a cabin door body and a plurality of pedals disposed on the cabin door body, the cabin door body being rotatably connected to the door frame; the lower cabin door is configured such that when in the unfolded state, the plurality of pedals unfold from the entrance / exit to the ground, allowing the user to enter the aircraft along the pedals; and when in the retracted state, the pedals automatically retract toward the cabin door body.

[0010] Optionally, it also includes a handrail mechanism, wherein the pedal is rotatably connected to the inside of the hatch body via a pedal hinge. When the hatch body is in the retracted state, the pedal rotates vertically downward under the action of gravity, so that the pedal automatically moves towards the hatch body.

[0011] Optionally, it also includes a handrail mechanism, which unfolds to one side of the door body when the lower door is in the unfolded state to facilitate user entry into the aircraft, and folds into the aircraft and retracts towards the door body when the lower door is in the retracted state.

[0012] Optionally, during the rotation of the lower hatch from the retracted state to the unfolded state, the pedal is subjected to centrifugal force and rotates away from the hatch body, eventually coming to rest in a horizontal state.

[0013] Optionally, the handrail mechanism includes a first link and a second link that are rotatably connected to each other. The first link is connected to the door body, and the second link is connected to the door frame. The first link includes a first straight rod and a second straight rod that are connected to each other, and the first straight rod and the second straight rod intersect at an obtuse angle.

[0014] The aircraft cabin doors in this application adopt a double-opening design for the upper and lower cabin doors. Only one door lock mechanism is needed to open or lock the upper and lower cabin doors. The two work together to maximize the cabin door opening area, giving passengers ample space to move in and out. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of the aircraft cabin door in the unfolded state according to an embodiment of this application.

[0016] Figure 2 The image shown is an external view of the aircraft with its cabin door retracted, as described in this application embodiment.

[0017] Figure 3The image shown is an inside view of the aircraft with the cabin door retracted, as described in this application embodiment.

[0018] Figure 4 Displayed as Figure 2 Sectional view of line A-A';

[0019] Figure 5 Displayed as Figure 4 A magnified view of a portion of position A in the middle;

[0020] Figure 6 The diagram shown is a structural schematic of the lower hatch in the deployed state according to an embodiment of this application.

[0021] Figure 7 Displayed as Figure 6 A magnified view of a portion of position B in the middle;

[0022] Figure 8 Displayed as Figure 6 A magnified view of the area at position C in the middle;

[0023] Figure 9 The diagram shows a cross-sectional view of the ball-matching mechanism according to an embodiment of this application along its central axis;

[0024] Figure 10 Displayed as Figure 1 A magnified view of the area at position D in the middle;

[0025] Figure 11 The diagram shown is a structural schematic of the lower hatch with a handrail mechanism according to an embodiment of this application.

[0026] Figure 12 Displayed as Figure 11 A magnified view of the area at position E in the middle;

[0027] Figure 13 The diagram shown is a structural schematic of the upper hatch in the unfolded state according to an embodiment of this application.

[0028] Figure 14 This is a structural schematic diagram showing the first state of the lower hatch during the unfolding process in an embodiment of this application.

[0029] Figure 15 This is a structural schematic diagram showing the second state of the lower hatch during the unfolding process in an embodiment of this application.

[0030] Figure 16 The diagram shown is a structural schematic of the third state during the lower door opening process in an embodiment of this application. Detailed Implementation

[0031] The following embodiments further illustrate the technical solutions of this application. It should be understood that the specific embodiments described herein are merely for explaining this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all of them.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The term "aircraft" is defined as an air transport system of any size having at least one lift propeller as its propulsion source. The term "aircraft" can include both "manned" and "unmanned" air transport systems. A manned aircraft can mean an air transport system carrying one or more human passengers, none of whom have control over the aircraft. A manned aircraft can also mean an air transport system carrying one or more human passengers, some of whom, or one of whom, has partial or full control over the aircraft. An unmanned aircraft can mean an air transport system that does not carry any human passengers and flies autonomously or is remotely controlled by someone at a distance.

[0035] In this specification, "aircraft" includes manned aircraft and any unmanned vehicle, such as unmanned aerial vehicles (UAVs), unmanned aircraft, remote-controlled aircraft, unmanned aircraft systems, any aircraft classified by the International Civil Aviation Organization (ICAO) under cycle 328AN / 190, and so on. As an example, a drone can take the form of a single- or multi-rotor helicopter (such as a quadcopter) or a fixed-wing aircraft. Furthermore, certain portions of this disclosure can be used in conjunction with drones in the form of other types of unmanned vehicles (e.g., wheeled, tracked, and / or watercraft).

[0036] Embodiments of this application are described below with reference to the accompanying drawings, such as Figure 1 and Figure 2 As shown in the figure, this application embodiment provides an aircraft hatch, which specifically includes a door frame 1, an upper hatch 2, a lower hatch 3, and a door locking mechanism 4. The upper hatch 2 and the lower hatch 3 are respectively rotatably disposed within the door frame 1 to open or close the entrance 10 of the door frame 1, thereby forming the upper and lower hatches as shown in the attached figure. Figure 1 The unfolded state and attachments shown Figure 2 The collapsed state is shown.

[0037] Specifically, the upper hatch 2 is rotatably connected to the door frame 1 via hinges, and one or more telescopic struts 5 are also connected between the upper hatch 2 and the door frame 1. For example... Figure 3 As shown, a first fixing part 21 is installed on the inner side of the upper hatch 2 near the top, and a second fixing part 22 is installed on the door frame 2 on the side of the upper hatch 2 at the lower position. The two ends of the telescopic strut 5 are connected to the first fixing part 21 and the second fixing part 22 respectively, so that when the upper hatch 2 is closed, the telescopic strut 5 is compressed and can abut against the first fixing part 21 of the upper hatch 2 in the vertical direction, thereby pressing the upper hatch 2 tightly.

[0038] When the upper hatch 2 is pushed outward by force, and the angle between the upper hatch 2 and the telescopic support rod 5 is greater than a preset angle, the compressed telescopic support rod 5 automatically opens the upper hatch 2 outward during the pressure release process, thereby saving the user's effort. In one embodiment, the preset angle is 15-22 degrees, preferably 20 degrees. However, it is understood that those skilled in the art can adjust the positions of the first fixing part 21 and the second fixing part 22 according to the actual situation for reasonable settings.

[0039] It should be noted that the telescopic strut 5 can be pneumatic or hydraulically driven, and those skilled in the art can set it appropriately according to the actual situation.

[0040] In one embodiment, the upper door 2 is also equipped with a large area of ​​glass to increase the passenger's field of vision.

[0041] In this embodiment, the door lock mechanism 4 is disposed on the upper hatch 2. The door lock mechanism 4 includes an outer handle on the outside, an inner handle on the inside, and a door lock structure inside the hatch. The specific structure is not limited, and those skilled in the art can reasonably set it according to the actual situation.

[0042] like Figure 4 and Figure 5As shown, the bottom of the upper hatch 2 is provided with a lower protrusion 20, and the top of the lower hatch 3 is provided with an upper protrusion 30. When the upper hatch 2 and the lower hatch 3 are in the retracted state, the lower protrusion 20 and the upper protrusion 30 are configured to at least partially overlap in the horizontal direction and be offset from each other in the vertical direction.

[0043] In this embodiment, the lower protrusion 20 is located on the bottom outer side of the upper hatch 2, and the upper protrusion 30 is located on the top inner side of the lower hatch 3. When the upper hatch 2 and lower hatch 3 are in the retracted state, the upper hatch 2 abuts against the lower hatch 3 inward. A door lock mechanism 4 is provided on the upper hatch 2, which locks the upper hatch 2 while simultaneously abutting and fixing the lower hatch 3. When it is necessary to open the aircraft hatch, the upper hatch 2 must be unlocked first via the door lock mechanism 4 before the lower hatch 3 can be opened. This design on the double-hinged doors allows the hatch to be opened or locked with only one unlocking or locking operation.

[0044] However, it is understood that in another embodiment, the lower protrusion 20 can be provided on the bottom inner side of the upper hatch 2, the upper protrusion 30 can be provided on the top outer side of the lower hatch 3, and the door lock mechanism 4 can be provided on the lower hatch 3. The door lock mechanism 4 locks the lower hatch 3 while also supporting and fixing the upper hatch 2, so that unlocking or locking can be achieved in one go.

[0045] In the embodiments of this application, the lower protrusion 20 and the upper protrusion 30 are basically the same in height in the horizontal direction. However, it is understood that the specific structure and height of the lower protrusion 20 and the upper protrusion 30 are not limited, and those skilled in the art can set them reasonably according to the actual situation.

[0046] The aircraft cabin doors in this application adopt a double-opening design for the upper and lower cabin doors. Only one door lock mechanism is needed to open or lock the upper and lower cabin doors. The two work together to maximize the cabin door opening area, giving passengers ample space to move in and out.

[0047] like Figure 6 As shown, the lower cabin door 3 includes a cabin door body 31 and a plurality of pedals 32 disposed on the cabin door body 31. The cabin door body 31 is rotatably connected to the door frame 1. The lower cabin door 3 is configured such that when it is in the unfolded state, the plurality of pedals 32 unfold from the entrance / exit 10 to the ground so that the user can enter the aircraft along the pedals 32. When it is in the retracted state, the pedals 32 automatically move toward the cabin door body 31 and retract.

[0048] Specifically, such as Figure 3As shown, the pedals 32 are rotatably connected to the inside of the hatch body 31 via pedal hinges 33, and each pedal 32 is connected to a pair of pedal hinges 33. When the lower hatch 3 is in the retracted state, the pedals 32 rotate vertically downward under the action of gravity, so that the pedals 32 automatically move towards the hatch body 31. This automatic folding and retracting door ladder system does not require additional mechanical mechanisms and does not occupy cabin interior space, thus improving the utilization rate of cabin space.

[0049] like Figure 6 As shown, the hatch body 31 and the door frame 1 are rotatably connected by a pair of hatch hinges 34. One end of the hatch hinge 34 is connected to the door frame 1, and the other end is connected to the hatch body 31. With the rotation of the hatch hinge 34, the lower hatch 3 can be opened or closed below the entrance 10 of the door frame 1, so as to form the lower hatch 3 in the unfolded state and the retracted state respectively.

[0050] It should be noted that the rotation of the hatch hinge 34 can be manual, electric, or hydraulic, and those skilled in the art can set it reasonably according to the actual situation.

[0051] During the rotation of the lower cabin door 3 from the retracted state to the extended state, the step 32 rotates away from the door body 31 under the action of centrifugal force. When the lower cabin door 3 is in the extended state, the step 32 remains in a horizontal state to facilitate the user to enter the aircraft cabin by stepping on the step 32.

[0052] In one embodiment, the pedal 32 is mechanically limited to a horizontal position by the pedal hinge 33 itself.

[0053] In one embodiment, such as Figure 7 As shown, when the pedal 32 is in the horizontal position, at least one side 320 of the pedal 32 abuts against the inner surface of the hatch body 31, thereby limiting the pedal 32 and keeping it in a horizontal state.

[0054] Furthermore, in some embodiments, such as Figure 7 As shown, each pedal 32 is provided with a fixing part 35 for fixing the rope 36. The pedals 32 are connected together by the rope 36, which further stabilizes each pedal 32, prevents shaking, reduces the stress on the pedal hinge 33, and enhances safety.

[0055] In this embodiment, there are three pedals 32, but it is understood that there is no particular limitation on the specific number of pedals 32, and those skilled in the art can set them reasonably according to the actual situation.

[0056] In one embodiment, such as Figure 8 and Figure 9As shown, the lower hatch 3 is equipped with a pair of ball-bearing mechanisms 6. The ball-bearing mechanism 6 includes a ball 61 and a biasing member 62 disposed inside the outer shell 60. Under the action of the extrusion force, the ball 61 can enter the outer shell 60, and under the release of the extrusion force, part of the ball 61 extends out of the outer shell 60 under the spring-pushing action of the biasing member 62.

[0057] like Figure 10 As shown, the door frame 1 is provided with a pair of catch ball grooves 7 that mate with the catch ball mechanism 6. When the lower hatch 3 enters the door frame 1, the catch ball 61 is squeezed from outside the catch ball groove 7 into the catch ball groove 7, thereby locking the lower hatch 3 onto the door frame 1. When the lower hatch 3 is moved from the retracted state to the extended state, the spring force of the corresponding biasing member 62 needs to be overcome to push the catch ball 61 out of the corresponding catch ball groove 7, thereby opening the lower hatch 3. The catch ball mechanism 6 and the catch ball grooves 7 are designed so that the lower hatch 3 remains closed without a large external force. When it is necessary to close or open the lower hatch, only a light push or touch is needed to open or close the lower hatch 3.

[0058] In this embodiment, the biasing element 62 is a spring, but it is understood that there are no particular limitations on the specific structure, and those skilled in the art can set it reasonably according to the actual situation.

[0059] In one embodiment, such as Figure 1 As shown, the aircraft cabin door in this embodiment of the application also includes a handrail mechanism 8. The handrail mechanism 8 extends to one side of the cabin door body 31 when the door body 31 is in the unfolded state, to facilitate the user's entry into the aircraft while holding onto the handrail mechanism 8. Figure 3 As shown, when the door body 31 is in the retracted state, it folds together with the aircraft interior and retracts towards the door body 31.

[0060] Specifically, such as Figure 1 As shown, the handrail mechanism 8 includes a first link 81 and a second link 82 that are rotatably connected to each other. The first link 81 is connected to the hatch body 31, and the second link 82 is connected to the door frame 1. Figure 11 and Figure 12 As shown, the first link 81 includes a first straight rod 811 and a second straight rod 812 that are connected to each other, and the first straight rod 811 and the second straight rod 812 intersect at an obtuse angle.

[0061] like Figure 12 As shown, a recessed space 310 is provided at the connection between the hatch body 31 and the first connecting rod 81. A connecting part 311 that is rotatably connected to the first connecting rod 81 is provided in the recessed space 310, wherein the first straight rod 811 moves within the recessed space 310.

[0062] like Figure 3 As shown, when the aircraft cabin door is in the retracted state, the first link 81 and the second link 82 fold together at the edge of the door, saving cabin space. Figure 1 As shown, when the aircraft door is in the open position, the first link 81 and the second link 82 are opened accordingly, making it convenient for users to grip when walking along the step 32 and ensuring boarding safety.

[0063] In addition, in some embodiments, the aircraft door may be connected to a rope that connects to the aircraft body. There are no particular restrictions on the specific structure, and those skilled in the art can make reasonable settings according to the actual situation.

[0064] like Figures 13 to 16 As shown in the attached embodiment, this application also provides an aircraft, including any one of the aircraft doors in the above embodiments. The upper door 2 and the lower door 3 of the aircraft door are rotatably disposed within the door frame 1 to open or close the entrance 10 of the door frame 1, thereby forming the door as shown in the attached figure. Figure 1 The unfolded state and attachments shown Figure 2 The collapsed state is shown.

[0065] Figure 13 The upper hatch 2 is shown to be open. Figures 14 to 16 The process of the upper hatch 2 and lower hatch 3 rotating from the retracted state to the deployed state is shown.

[0066] The aircraft in this application adopts a double-door design for the upper and lower cabins. Only one door lock mechanism is needed to open or lock the upper and lower cabins. The two work together to maximize the cabin opening area, giving passengers ample space to move in and out.

[0067] The above embodiments are merely illustrative of the principles and effects of this application. Any person skilled in the art can modify or alter the above embodiments without departing from the purpose of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the purpose disclosed in this application should still be covered by the claims of this application.

Claims

1. An aircraft door, characterized in that, include: A door frame (1), an upper hatch (2), a lower hatch (3), and a door lock mechanism (4); the upper hatch (2) and the lower hatch (3) are rotatably disposed within the door frame (1) to open or close the entrance (10) of the door frame (1) to form an unfolded state and a retracted state; the lower hatch (2) is provided with a lower protrusion (20) at the bottom, and the lower hatch (3) is provided with an upper protrusion (30) at the top; when the upper hatch (2) and the lower hatch (3) are in the retracted state, the lower protrusion (20) and the upper protrusion (30) are configured to at least partially overlap in the horizontal direction and be staggered in the vertical direction; the door lock mechanism (4) is used to lock or unlock the upper hatch (2) and the lower hatch (3).

2. The aircraft door of Claim 1, wherein, The lower protrusion (20) is located on the bottom outer side of the upper hatch (2), the upper protrusion (30) is located on the top inner side of the lower hatch (3), and the door lock mechanism (4) is located on the upper hatch (2).

3. The aircraft door of Claim 1, wherein, A telescopic strut (5) is connected between the upper hatch (2) and the door frame (1). When the upper hatch (2) is closed, the telescopic strut (5) is compressed and abuts against the upper hatch (2) in the vertical direction, thereby pressing the upper hatch (2). When the upper hatch (2) is pushed outward, the angle between the upper hatch (2) and the telescopic strut (5) is greater than a preset angle. During the pressure release process, the telescopic strut (5) automatically pushes the upper hatch (2) outward.

4. The aircraft door of Claim 1, wherein, The lower hatch (3) is provided with a ball-bearing mechanism (6), which includes a ball (61) and a biasing member (62). The door frame (1) is provided with a ball-bearing groove (7) that matches the ball-bearing mechanism (6). When the lower hatch (3) enters the door frame (1), the ball (61) is squeezed from outside the ball-bearing groove (7) into the ball-bearing groove (7) by force, thereby locking the lower hatch onto the door frame (1).

5. The aircraft door of Claim 1, wherein, The lower cabin door (3) includes a cabin door body (31) and a plurality of pedals (32) provided on the cabin door body (31). The cabin door body (31) is rotatably connected to the door frame (1). The lower cabin door (3) is configured such that when in the unfolded state, the plurality of pedals (32) unfold from the entrance (10) to the ground so that the user can enter the aircraft along the pedals (32). When in the retracted state, the pedal (32) automatically retracts towards the hatch body (31).

6. The aircraft door of Claim 5, wherein, The pedal (32) is rotatably connected to the inside of the hatch body (31) via a pedal hinge (33). When the hatch body (31) is in the retracted state, the pedal (32) rotates vertically downward under the action of gravity, so that the pedal (32) automatically moves towards the hatch body (31).

7. The aircraft hatch according to claim 5, characterized in that, During the rotation of the lower hatch (3) from the retracted state to the unfolded state, the pedal (32) is subjected to centrifugal force and rotates away from the hatch body (31) and eventually stops in a horizontal state.

8. The aircraft door of Claim 5, wherein, It also includes a handrail mechanism (8), which unfolds together with the lower cabin door (3) to one side of the cabin door body (31) when the lower cabin door (3) is in the unfolded state, so as to facilitate the user to enter the aircraft. When the lower cabin door (3) is in the retracted state, it folds together with the lower cabin door body (31) and retracts towards the cabin door body (31).

9. The aircraft door of Claim 8, wherein, The handrail mechanism (8) includes a first link (81) and a second link (82) that are rotatably connected to each other. The first link (81) is connected to the hatch body (31), and the second link (82) is connected to the door frame (1). The first link (81) includes a first straight rod (811) and a second straight rod (812) that are connected to each other. The first straight rod (811) and the second straight rod (812) intersect at an obtuse angle.

10. An aircraft characterized by, Including the aircraft hatch as described in any one of claims 1-9.

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