Folding airstairs and aircraft

Abstract

The folding aeroladder comprises a folding and unfolding mechanism, the folding and unfolding mechanism comprises a telescopic part, a connecting rod assembly and a limiting part, the telescopic part is arranged in a storage cabin in an extendable mode and moves between a first position and a second position in the first direction, the connecting rod assembly is connected with the telescopic part, and the limiting part is arranged on the telescopic part; the connecting rod assembly is in limiting fit with the limiting piece; the pedal is connected with the connecting rod assembly and is folded and unfolded along with the folding and unfolding mechanism; the driving mechanism is in transmission connection with the telescopic part so as to drive the telescopic part to move; according to the structure of the folding and unfolding mechanism, when the telescopic piece is located at the first position, the connecting rod assembly is matched with the limiting piece in a limiting mode, so that the connecting rod assembly, the pedal and the telescopic piece are flush and stored in the storage cabin in the first direction, and the surface of the side, opposite to the folding and unfolding mechanism, of the pedal is matched with the outer surface of the fuselage; the connecting rod assembly is separated from the limiting piece and is unfolded, so that the pedal is unfolded out of the storage cabin. The folding airstairs disclosed by the utility model are convenient to carry.

Description

Technical Field

[0001] The utility model relates to the field of aircraft, in particular to a foldable boarding ladder and an aircraft. Background Art

[0002] In the design of electric vertical take-off and landing (eVTOL) aircraft, boarding stairs, as a crucial component of manned aircraft, directly impact the safety and efficiency of passenger boarding. Traditional boarding stairs, mostly fixed on the ground, cannot meet the flexible deployment and rapid response requirements of eVTOLs. Furthermore, existing boarding stairs have numerous shortcomings in folding and automation, often failing to fully fold or automate. This makes installation difficult, increases their bulk, and adds weight and complexity to the aircraft. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a foldable boarding ladder and an aircraft. The foldable boarding ladder can be carried with the aircraft, is automatically stored, is easy to fold and unfold, has a fast response speed, and is conducive to meeting the lightweight design requirements of the aircraft.

[0004] In a first aspect, an embodiment of the present invention provides a folding boarding ladder, which is applied to an aircraft, wherein the fuselage of the aircraft has a storage compartment and a storage opening connected to the storage compartment, and the folding boarding ladder includes: a folding and unfolding mechanism, including: a telescopic member, a connecting rod assembly and a limiting member, the telescopic member is extendably arranged in the storage compartment through the storage opening, the telescopic member moves between a first position and a second position along a first direction, the connecting rod assembly is connected to the telescopic member, and the connecting rod assembly is limitedly matched with the limiting member; a pedal, the pedal is connected to the connecting rod assembly to move along with the folding and unfolding mechanism The telescopic member is retractable and extendable; a driving mechanism is transmission-connected to the telescopic member to drive the telescopic member to move; the retractable and extendable mechanism is constructed so that when the telescopic member is in the first position, the connecting rod assembly and the limiting member are limitedly matched, so that the connecting rod assembly, the pedal and the telescopic member are stored flush in the storage compartment along the first direction, and the side surface of the pedal facing away from the retractable and extendable mechanism matches the outer surface of the fuselage; when the telescopic member is in the second position, the connecting rod assembly is disengaged from the limiting member, and the connecting rod assembly is unfolded, so that the pedal is unfolded outside the storage compartment.

[0005] The foldable boarding ladder of the present invention can be stored in a storage compartment and is easy to carry around. Under the action of a driving mechanism, the telescopic member of the folding and unfolding mechanism performs telescopic movement between a first position and a second position, allowing the foldable boarding ladder to be folded and unfolded. This has a high degree of automation and is easy to fold and unfold. The foldable boarding ladder only includes a folding and unfolding mechanism, a pedal, and a driving mechanism. The pedal is a fuselage structural member when folded in the first state. The overall structure is simple, which is conducive to meeting the lightweight requirements of the aircraft. In addition, when the telescopic rod is in the first position, under the limiting action of the limiting member, the connecting rod assembly, the pedal, and the telescopic member are stored in the storage compartment in a flush and linear folding manner along the first direction, occupying a small amount of space inside the aircraft, which is conducive to the layout design of the aircraft.

[0006] In some embodiments, the connecting rod assembly includes two groups of first retraction and extension devices arranged at intervals along the second direction, the first retraction and extension device includes a first connecting rod, a first rocker rod and a first retraction and extension rod, the first connecting rod is arranged parallel to the telescopic member, the two ends of the first rocker rod are rotatably connected to the telescopic member and the first connecting rod respectively, the two ends of the first retraction and extension rod are connected to the telescopic member and the pedal respectively, the first retraction and extension rod also includes a connection point located between the two ends, the connection point is rotatably connected to the first connecting rod, and the first rocker rod is arranged parallel to the first retraction and extension rod.

[0007] According to some embodiments of the present utility model, the limiting member has a limiting end, and when the telescopic member is in the first position, the limiting end abuts against the side wall of the first connecting rod, and the first connecting rod and the first rocker arm are located above the limiting end; when the telescopic member is in the second position, the limiting end is spaced apart from the first connecting rod, and the first connecting rod is located below the limiting end.

[0008] According to some embodiments of the present invention, when the telescopic member is in the second position, the limit end contacts the first rocker arm, and / or when the telescopic member is in the second position, the limit end is spaced apart from the first rocker arm.

[0009] According to some embodiments of the present invention, the pedal is arranged parallel to the telescopic member, and the connecting rod assembly also includes a second retractable rod, the two ends of which are rotatably connected to the telescopic member and the pedal respectively, and the second retractable rod and the first retractable rod are parallel to and spaced apart from each other along the first direction.

[0010] According to some embodiments of the present invention, the connecting rod assembly further includes a stabilizing rod, both ends of which are rotatably connected to the middle portion of the first retractable rod and the middle portion of the second retractable rod, respectively, and the stabilizing rod is parallel to the telescopic member.

[0011] According to some embodiments of the present invention, the connecting rod assembly also includes a second rocker arm, the two ends of which are rotatably connected to the telescopic member and the middle part of the first connecting rod respectively, and the second rocker arm, the first rocker arm and the first retractable rod are arranged in parallel.

[0012] In some embodiments, it further includes: a guide member, the guide member is provided in the storage compartment, and the telescopic member cooperates with the guide member to guide along the first direction.

[0013] In some embodiments, the driving mechanism includes a driving member and a transmission device, the transmission device is respectively connected to the driving member and the telescopic member, and the driving member drives the telescopic member to move through the transmission device.

[0014] In a second aspect, an embodiment of the present invention further provides an aircraft, comprising: a fuselage defining a storage compartment; and the above-mentioned folding boarding ladder, wherein the folding boarding ladder is arranged in the storage compartment.

[0015] The aircraft of the present invention, equipped with the aforementioned folding boarding ladder, automatically retracts and unfolds during takeoff and landing, making it convenient for passengers to board and exit the aircraft. The folding boarding ladder has a simple structure and occupies minimal space within the aircraft, thereby improving the utilization of the aircraft's interior space. Furthermore, it meets the lightweight requirements of the aircraft, ensures the aircraft's flight time, and thus enhances user satisfaction.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is one of the structural diagrams of the folding boarding ladder of an embodiment of the present utility model;

[0019] Figure 2 This is the second structural diagram of the foldable boarding ladder of the embodiment of the utility model;

[0020] Figure 3 This is a partial structural diagram of a foldable boarding ladder according to an embodiment of the present utility model;

[0021] Figure 4 This is a state diagram of a retractable device when the telescopic member of the embodiment of the utility model is in the first position;

[0022] Figure 5This is a state diagram of a retractable device when the telescopic member of the embodiment of the utility model is located between the first position and the second position;

[0023] Figure 6 This is a state diagram of a retractable device when the telescopic member of the embodiment of the utility model is located in the second position;

[0024] Figure 7 This is a diagram showing the state of the foldable boarding ladder on the aircraft when the telescopic member of the embodiment of the utility model is in the first position;

[0025] Figure 8 This is a state diagram of the foldable boarding ladder on the aircraft when the telescopic member of the embodiment of the utility model is in the second position.

[0026] Reference numerals:

[0027] 100-Folding boarding ladder;

[0028] 110- retracting and extending mechanism; 111- telescopic member;

[0029] 112 - connecting rod assembly; 1120 - first retractable device; 1121 - first connecting rod; 1122 - first swing rod; 1123 - first retractable rod; 1123a - connection point; 1124 - second retractable rod; 1125 - stabilizing rod; 1126 - second swing rod;

[0030] 113-limiting member; 1131-limiting end;

[0031] 120-pedal;

[0032] 130-driving mechanism; 131-driving member; 132-transmission device;

[0033] 140-guide;

[0034] 200-aircraft;

[0035] 210-Storage compartment. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] Existing airstairs are mostly fixed on the ground, which cannot meet the flexible deployment and rapid response requirements of eVTOL. Existing airstairs are often unable to fully fold or operate automatically, making them difficult to install on the fly. They are also bulky, increasing the weight and complexity of the aircraft.

[0038] In view of this, the utility model provides a foldable boarding ladder and an aircraft. The foldable boarding ladder can be carried randomly, automatically stored, conveniently folded and unfolded, and has a fast response speed, which is conducive to meeting the lightweight design requirements of the aircraft.

[0039] refer to Figures 1 to 8 In a first aspect, an embodiment of the present invention provides a foldable boarding ladder 100 , which can be applied to an aircraft 200 , wherein the fuselage of the aircraft 200 has a storage compartment 210 and a storage opening connected to the storage compartment 210 .

[0040] The folding boarding ladder 100 may include a folding and unfolding mechanism 110 , a step 120 , and a driving mechanism 130 .

[0041] The retractable mechanism 110 may include a telescopic member 111, a connecting rod assembly 112, and a limiting member 113. The telescopic member 111 is extendable from the storage compartment 210 through the retractable opening. The telescopic member 111 is extended in a first direction (eg, Figure 6 The pedal 120 is connected to the connecting rod assembly 112 to move between a first position and a second position (in the X direction shown). The connecting rod assembly 112 is connected to the telescopic member 111. The limiting member 113 is provided in the storage compartment 210. The connecting rod assembly 112 and the limiting member 113 are mutually limited. The pedal 120 is connected to the connecting rod assembly 112 to be retracted and extended along with the retracting and extending mechanism 110.

[0042] When the telescopic member 111 moves between the first and second positions, it drives the connecting rod assembly 112 to move synchronously. The connecting rod assembly 112 engages with the stopper 113 to complete the folding and unfolding of the foldable boarding ladder 100. For example, when the telescopic member 111 is in the first position, the stopper 113 can abut against the connecting rod assembly 112, allowing the connecting rod assembly 112, the step 120, and the telescopic member 111 to be stored flush in the storage compartment 210 along the first direction. When the telescopic member 111 is in the second position, the connecting rod assembly 112 disengages from the stopper 113, and the connecting rod assembly 112 unfolds, allowing the step 120 to be deployed outside the storage compartment 210. This ensures that the foldable boarding ladder 100 of this embodiment has a high degree of automation and convenient folding and unfolding operations.

[0043] The telescopic member 111 moves from the second position to the first position, driving the connecting rod structure to fold the step 120. This process can be as follows: the connecting rod assembly 112, in the deployed state, approaches the stopper 113, and a portion of the connecting rod assembly 112 (such as the first connecting rod 1121 described below) gradually contacts the stopper 113. Under the restraining action of the stopper 113, the connecting rod assembly 112 gradually folds to a position flush with the telescopic member 111. The telescopic member 111 is then stored within the storage compartment 210, occupying a small amount of space and facilitating the lightweight design of the aircraft 200. When the telescopic member 111 moves from the first position to the second position, the first connecting rod 1121 of the connecting rod assembly 112 disengages from the stopper 113, and the connecting rod assembly 112 unfolds, thereby deploying the foldable boarding ladder.

[0044] The driving mechanism 130 is connected to the telescopic member 111 to drive the telescopic member 111 to move, wherein the transmission connection between the driving mechanism 130 and the telescopic member 111 may include but is not limited to gear transmission, chain transmission or directly pushing the telescopic member 111 to move.

[0045] Furthermore, when the telescopic member 111 is in the first position, the pedal 120 blocks the stowage opening, and the surface of the pedal 120 facing away from the stowage mechanism 110 aligns with the outer surface of the fuselage. This allows the pedal 120 to become a structural component of the fuselage of the aircraft 200. After blocking the stowage opening, the surface of the pedal 120 facing away from the stowage mechanism 110 aligns with the curved surface of the fuselage, ensuring an aesthetically pleasing fuselage appearance while maintaining the aerodynamic performance of the aircraft 200. When the telescopic member 111 is in the second position, the connecting rod assembly 112 deploys, allowing the pedal 120 to be deployed outside the stowage compartment 210, allowing passengers to board and exit the aircraft 200 via the pedal 120.

[0046] The foldable boarding ladder 100 of the present invention can be stored in a storage compartment 210, making it easy to carry around. This allows passengers to board and disembark in non-airport areas, increasing the applicability of the aircraft 200. Under the action of the drive mechanism 130, the telescopic member 111 of the folding and unfolding mechanism 110 telescopes between a first position and a second position, allowing the foldable boarding ladder 100 to fold and unfold. This provides a high degree of automation and facilitates the folding and unfolding of the foldable boarding ladder 100. Furthermore, the foldable boarding ladder 100 comprises only the folding and unfolding mechanism 110, the pedals 120, and the drive mechanism 130. The pedals 120, when folded in the first position, constitute a fuselage structural member, resulting in a simple overall structure that helps meet the lightweight requirements of the aircraft 200. Furthermore, when the telescopic rod is in the first position, the limiting member allows the connecting rod assembly, pedals, and telescopic member to be stored flush and linearly folded along the first direction within the storage compartment, minimizing the internal space of the aircraft and facilitating the aircraft's layout design.

[0047] refer to Figure 1 、 Figure 3 and Figure 6 In some embodiments, the connecting rod assembly 112 may include two sets of first retractable and extendable devices 1120 spaced apart along the second direction. The first retractable and extendable devices 1120 may include a first connecting rod 1121, a first swing rod 1122, and a first retractable and extendable rod 1123. The first connecting rod 1121 is arranged parallel to the telescopic member 111. The two ends of the first swing rod 1122 are rotatably connected to the telescopic member 111 and the first connecting rod 1121, respectively. The two ends of the first retractable and extendable rod 1123 are respectively connected to the telescopic member 111 and the pedal 120. The first retractable and extendable rod 1123 also includes a connection point 1123a located between the two ends. The connection point 1123a is rotatably connected to the first connecting rod 1121. The first swing rod 1122 is arranged parallel to the first retractable and extendable rod 1123.

[0048] It is understandable that the two ends of the pedal 120 are rotatably connected to the first retractable rods 1123 of the two first retractable devices 1120. The first connecting rod 1121, the first swing rod 1122, and the first retractable rod 1123 of the first retractable device 1120 can form a parallelogram structure with the telescopic member 111. Since the four sides of the parallelogram structure always remain relatively parallel to each other, when the telescopic member 111 moves between the first position and the second position along the first direction, the first swing rods 1122 of the two first retractable devices 1120 will swing, thereby driving the two first retractable rods 1123 to swing synchronously, thereby driving the pedal 120 to fold and unfold.

[0049] The swing of the first swing arm 1122 may be caused by a trigger device (such as the limit member 113 described below) provided in the storage compartment 210 exerting an action on the first connecting rod 1121 or the first swing arm 1122 .

[0050] refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 6 According to some embodiments of the present invention, the limiting member 113 has a limiting end 1131, and the limiting end 1131 may have a lifting surface, which may be an inclined surface or an arcuate surface. When the first retractable device 1120 moves toward the first position along with the telescopic member 111, the limiting member 113 acts on the first swing rod 1122, causing the first swing rod 1122 to swing, gradually lifting the first connecting rod 1121, thereby changing the distance between the first connecting rod 1121 and the telescopic member 111. The first swing rod 1122 then swings until it is flush with the telescopic member 111. At this time, the first connecting rod 1121 is completely moved above the limiting member 113.

[0051] refer to Figure 4When the telescopic member 111 is in the first position, the limiting end 1131 abuts against the side wall of the first connecting rod 1121, and the first connecting rod 1121 and the first rocker arm 1122 are located above the limiting end 1131, so that the four-bar structure formed by the first connecting rod 1121, the first rocker arm 1122, the first retractable rod 1123 and the telescopic member 111 is retracted to a linear overlapping state, thereby occupying as little internal space of the aircraft 200 as possible; when the telescopic member 111 is in the second position, the limiting end 1131 is spaced from the first connecting rod 1121, and the first connecting rod 1121 is located below the limiting end 1131. At this time, the first connecting rod 1121 is separated from the limiting end 1131 and is no longer lifted by the limiting end 1131. The first connecting rod 1121 moves horizontally in space, and the distance between it and the telescopic member 111 increases. The first rocker arm 1122 and the first retractable rod 1123 swing, causing the pedal 120 to unfold. The structure is simple and the folding and unfolding process of the folding boarding ladder 100 is convenient. On the one hand, it is conducive to meeting the lightweight requirement of the aircraft 200. On the other hand, the structural reliability of the folding boarding ladder 100 is high.

[0052] It is understandable that, under different installation modes, when the telescopic member 111 is in the second position, the first swing arm 1122 may be located on the left side of the limiting end 1131 (see Figure 6 ), of course, when the telescopic member 111 is in the second position, the first rocker arm 1122 may also be located on the right side of the limit end 1131 (not shown in the figure). At this time, the moving direction of the telescopic member 111 when the folding boarding ladder 100 is folded and extended is opposite to that in the present embodiment.

[0053] refer to Figure 6 According to some embodiments of the present invention, when the telescopic member 111 is in the second position, the limiting end 1131 contacts the first swing rod 1122 .

[0054] As can be understood, when the telescopic member 111 is in the first position, the limiting end 1131 pushes against the first connecting rod 1121 above. At this point, the first connecting rod 1121, the first swing arm 1122, the first retracting and deploying rod 1123, and the telescopic member 111 form an overlapping straight line. To move the telescopic member 111 to the second position, the limiting end 1131 simply disconnects from the first connecting rod 1121. Under the action of gravity, the first connecting rod 1121 and the telescopic member 111 become displaced, causing the first swing arm 1122 to begin to swing. When the folding boarding ladder 100 is deployed to its extreme position, the limiting end 1131 can contact the first swing arm 1122. Of course, the limiting end 1131 can be disconnected from the first retracting and deploying device 1120, meaning that when the telescopic member 111 is in the second position, the limiting end 1131 can be spaced apart from the first swing arm 1122. This improves the structural reliability of the folding boarding ladder 100 when deployed.

[0055] refer to Figure 6 According to some embodiments of the present invention, the step 120 is arranged parallel to the telescopic member 111. The connecting rod assembly 112 further includes a second retractable rod 1124. The ends of the second retractable rod 1124 are rotatably connected to the telescopic member 111 and the step 120, respectively. The second retractable rod 1124 is arranged parallel to and spaced apart from the first retractable rod 1123 along a first direction. Thus, the first retractable rod 1123, the second retractable rod 1124, the step 120, and the telescopic member 111 form another parallelogram structure. Because the telescopic member 111 does not rotate, the step 120 moves horizontally during the folding boarding ladder 100's folding and unfolding process, making the folding and unfolding of the step 120 more stable. In other words, when the foldable boarding ladder 100 is in the folded state, the pedal 120, the first rocker arm 1122, the first connecting rod 1121, the first retractable rod 1123, the second retractable rod 1124 and the telescopic member 111 form a linear overlapping structure, further reducing the occupied internal space of the aircraft 200.

[0056] Understandably, the step 120 moves horizontally during the folding and unfolding of the foldable boarding ladder 100, without any tilting motion. Thus, when folded within the stowage compartment 210, the step 120 blocks the stowage opening. As a result, the stowage opening, where the end surface of the step 120 facing away from the telescopic member 111 mates with the outer surface of the fuselage, has a small opening area, thereby minimizing the impact on the aerodynamic performance of the aircraft 200.

[0057] refer to Figure 6 According to some embodiments of the present invention, the connecting rod assembly 112 may further include a stabilizing rod 1125. The ends of the stabilizing rod 1125 are rotatably connected to the middle portion of the first retractable rod 1123 and the middle portion of the second retractable rod 1124, respectively. The stabilizing rod 1125 is parallel to the telescopic member 111. Thus, the stabilizing rod 1125 serves as a reinforcement structure, improving the stability of the parallelogram structure formed by the first retractable rod 1123, the second retractable rod 1124, the step 120, and the telescopic member 111. This makes the folding and unfolding process of the step 120 more stable, thereby improving the structural reliability of the foldable boarding ladder 100.

[0058] refer to Figure 4 、 Figure 5 and Figure 6According to some embodiments of the present invention, the connecting rod assembly 112 may further include a second swing rod 1126. The ends of the second swing rod 1126 are rotatably connected to the telescopic member 111 and the middle portion of the first connecting rod 1121, respectively. The second swing rod 1126, the first swing rod 1122, and the first retractable rod 1123 are arranged in parallel. Because the first connecting rod 1121 is relatively long, when the limiting end 1131 initially pushes against and lifts the end of the first connecting rod 1121 away from the step 120, the end of the first connecting rod 1121 closer to the step 120 may sag under the action of gravity, potentially causing the first connecting rod 1121 to break. The provision of the second swing rod 1126 as a reinforcement structure improves the stability of the four-rod structure formed by the first connecting rod 1121, the first swing rod 1122, the first retractable rod 1123, and the telescopic member 111, thereby making the deployment and folding operations of the foldable boarding ladder 100 more reliable.

[0059] refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In some embodiments, the foldable boarding ladder 100 may further include a guide member 140 disposed in the storage compartment 210. The telescopic member 111 cooperates with the guide member 140 to guide along the first direction. For example, the guide member 140 may be a guide rail or a guide post extending along the first direction. The telescopic member 111 may be provided with a slot that cooperates with the guide rail, or a ring that cooperates with the guide post. This improves the accuracy of the telescopic movement of the telescopic member 111, thereby enhancing the structural reliability of the foldable boarding ladder 100.

[0060] refer to Figure 1 In some embodiments, the drive mechanism 130 may include a drive member 131 and a transmission device 132. The transmission device 132 is in transmission connection with the drive member 131 and the telescopic member 111, respectively. The drive member 131 drives the telescopic member 111 to move via the transmission device 132. Thus, by controlling the drive member 131 to extend and retract the telescopic member 111, the folding and unfolding of the foldable boarding ladder 100 can be automated, reducing the operational complexity of the foldable boarding ladder 100.

[0061] Furthermore, the driving member 131 includes at least one of a telescopic cylinder and a drive motor. For example, the driving member 131 may be a telescopic cylinder, the telescopic end of which is fixedly connected to the telescopic member 111, or the telescopic end of the telescopic cylinder may directly constitute the telescopic member 111. Alternatively, the driving member 131 may be a drive motor, which causes the telescopic member 111 to telescope via the transmission device 132. Of course, the driving member 131 may also be a combination of a telescopic cylinder and a drive motor, which causes the telescopic member 111 to telescope via the transmission device 132.

[0062] The transmission device 132 may include at least one of a rack and pinion device, a ball screw device, and a transmission chain device. For example, the transmission device 132 may be a rack and pinion device, wherein the gear is provided at the output end of the drive motor, the rack is provided on the telescopic member 111, and the rack extends along the first direction, the gear is engaged with the rack, and the drive motor drives the telescopic member 111 to telescopically move via the rack and pinion device. Alternatively, the transmission device 132 may also be a ball screw device, wherein the lead screw is rotatably connected to one end of the telescopic member 111, the drive motor drives the lead screw to rotate and move along the first direction, driving the telescopic member 111 to telescopically move along the first direction. Alternatively, the drive member 131 and the telescopic member 111 may also be transmitted via a transmission chain device.

[0063] The principle of the foldable boarding ladder 100 of the present invention is:

[0064] refer to Figure 4 , the telescopic member 111 is in the first position, the pedal 120, the first rocker arm 1122, the first connecting rod 1121, the first retractable rod 1123, the second retractable rod 1124 and the telescopic member 111 form a linear overlapping structure, which is stored in the storage compartment 210. At this time, the pedal 120 blocks the retractable opening, and the surface of the side of the pedal 120 facing away from the retractable mechanism 110 is flush with the outer surface of the fuselage.

[0065] refer to Figure 5 The drive mechanism 130 is activated, causing the telescopic member 111 to move from the first position to the second position. The first retractable device 1120 moves with the telescopic member 111 toward the outside of the retractable opening. The first connecting rod 1121 slides above the limit end 1131 until the first connecting rod 1121 is disconnected from the limit end 1131. At this point, the pedal 120 is fully extended out of the retractable opening. The telescopic member 111 continues to move toward the second position. The limit end 1131 begins to contact the first swing arm 1122, causing the first swing arm 1122 to swing. The pedal 120 then expands horizontally in space, parallel to the first direction.

[0066] refer to Figure 6 , until the telescopic member 111 reaches the second position and the pedal 120 is fully unfolded, completing the unfolding process of the foldable boarding ladder 100.

[0067] The folding process of the foldable boarding ladder 100 is opposite to the unfolding process, which will not be described in detail here.

[0068] refer to Figure 7 and Figure 8 In a second aspect, an embodiment of the present invention further provides an aircraft 200 , comprising: a fuselage defining a storage compartment 210 ; and the above-mentioned folding boarding ladder 100 , wherein the folding boarding ladder 100 is disposed in the storage compartment 210 .

[0069] The aircraft 200 of the present invention, equipped with the aforementioned foldable boarding ladder 100, automatically retracts and unfolds during takeoff and landing, making it convenient for passengers to board and exit the aircraft 200. The foldable boarding ladder 100 has a simple structure and occupies minimal space within the aircraft 200, thereby improving the utilization of the interior space. Furthermore, the lightweight design of the aircraft 200 is achieved, ensuring the aircraft's flight time and enhancing user satisfaction.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0071] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0072] In the description of the present invention, “plurality” means two or more.

[0073] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0074] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0075] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0076] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A foldable boarding ladder (100) applied to an aircraft (200), wherein the fuselage of the aircraft (200) comprises a storage compartment (210) and a storage opening communicating with the storage compartment (210), characterized in that: The boarding ladder comprises: The retractable and unfoldable mechanism (110) comprises: a telescopic member (111), a connecting rod assembly (112), and a position-limiting member (113); the telescopic member (111) is extendably disposed in the storage compartment (210) via the retractable opening; the telescopic member (111) moves along a first direction between a first position and a second position; the connecting rod assembly (112) is connected to the telescopic member (111), and the connecting rod assembly (112) and the position-limiting member (113) are engaged in a position-limiting manner; a pedal (120), the pedal (120) being connected to the connecting rod assembly (112) so as to be retracted and extended along with the retracting and extending mechanism (110); A driving mechanism (130) is in transmission connection with the telescopic member (111) to drive the telescopic member (111) to move; The retractable mechanism (110) is constructed such that when the telescopic member (111) is located at the first position, the connecting rod assembly (112) and the limiting member (113) are limitedly matched, so that the connecting rod assembly (112), the pedal (120) and the telescopic member (111) are stored flush in the storage compartment (210) along the first direction, and the side surface of the pedal (120) facing away from the retractable mechanism (110) matches the outer surface of the fuselage; when the telescopic member (111) is located at the second position, the connecting rod assembly (112) is disengaged from the limiting member (113), the connecting rod assembly (112) is deployed, and the pedal (120) is deployed outside the storage compartment (210).

2. The foldable boarding ladder (100) according to claim 1, characterized in that: The connecting rod assembly (112) includes two groups of first retractable and extendable devices (1120) arranged at intervals along the second direction. The first retractable and extendable devices (1120) include a first connecting rod (1121), a first rocker rod (1122) and a first retractable and extendable rod (1123). The first connecting rod (1121) is arranged in parallel with the telescopic member (111). The two ends of the first rocker rod (1122) are rotatably connected to the telescopic member (111) and the first connecting rod (1121). The two ends of the first retractable and extendable rod (1123) are connected to the telescopic member (111) and the pedal (120). The first retractable and extendable rod (1123) also includes a connection point (1123a) located between the two ends. The connection point (1123a) is rotatably connected to the first connecting rod (1121). The first rocker rod (1122) and the first retractable and extendable rod (1123) are arranged in parallel.

3. The foldable boarding ladder (100) according to claim 2, characterized in that: The limiting member (113) has a limiting end (1131), and when the telescopic member (111) is in the first position, the limiting end (1131) abuts against a side wall of the first connecting rod (1121), and the first connecting rod (1121) and the first rocker (1122) are located above the limiting end (1131); When the telescopic member (111) is in the second position, the limiting end (1131) and the first connecting rod (1121) are spaced apart, and the first connecting rod (1121) is located below the limiting end (1131).

4. The foldable boarding ladder (100) according to claim 3, characterized in that: When the telescopic member (111) is in the second position, the limiting end (1131) contacts the first rocker (1122), and / or, When the telescopic member (111) is in the second position, the limiting end (1131) and the first rocker (1122) are spaced apart.

5. The foldable boarding ladder (100) according to claim 2, characterized in that: The pedal (120) is arranged in parallel with the telescopic member (111), and the connecting rod assembly (112) further includes a second retractable rod (1124), both ends of which are rotatably connected to the telescopic member (111) and the pedal (120), respectively, and the second retractable rod (1124) and the first retractable rod (1123) are arranged in parallel along the first direction and at intervals.

6. The foldable boarding ladder (100) according to claim 5, characterized in that: The connecting rod assembly (112) further includes a stabilizing rod (1125), the two ends of which are rotatably connected to the middle of the first retractable rod (1123) and the middle of the second retractable rod (1124), respectively, and the stabilizing rod (1125) is parallel to the telescopic member (111).

7. The foldable boarding ladder (100) according to claim 2, characterized in that: The connecting rod assembly (112) further includes a second rocker (1126), the two ends of which are rotatably connected to the telescopic member (111) and the middle of the first connecting rod (1121), respectively, and the second rocker (1126), the first rocker (1122) and the first retractable rod (1123) are arranged in parallel.

8. The foldable boarding ladder (100) according to claim 1, characterized in that Also includes: A guide member (140), wherein the guide member (140) is provided in the storage compartment (210), and the telescopic member (111) cooperates with the guide member (140) to guide along the first direction.

9. The foldable boarding ladder (100) according to claim 1, characterized in that The driving mechanism (130) comprises a driving member (131) and a transmission device (132), wherein the transmission device (132) is respectively connected to the driving member (131) and the telescopic member (111), and the driving member (131) drives the telescopic member (111) to move via the transmission device (132).

10. An aircraft (200), characterized in that include: A fuselage defining a storage compartment (210); The foldable boarding ladder (100) according to any one of claims 1 to 9, wherein the foldable boarding ladder (100) is arranged in the storage compartment (210).

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