Folding mechanism of aircraft and aircraft

Abstract

The invention provides a folding mechanism of an aircraft and the aircraft, the folding mechanism of the aircraft comprises a folding support, one end of the folding support is used for being connected with a duct, the other end of the folding support is used for being connected with a fuselage of the aircraft, and the folding support comprises a first split body and a second split body which can rotate synchronously; the telescopic piece is obliquely arranged, and the two ends of the telescopic piece are hinged to the two rod pieces on the same side in the vertical direction of the first split body respectively; the two ends of the telescopic piece are hinged to the two rod pieces on the same side of the second split body in the vertical direction correspondingly. When the telescopic piece is in the stretching state, the telescopic piece is used for driving the first split body and the second split body to rotate synchronously and mutually, and the folding mechanism is changed into a folded state from an unfolded state. When the telescopic piece is in a shortened state, the telescopic piece is used for driving the first split body and the second split body to rotate synchronously, and the folding mechanism is changed into an unfolded state from a folded state. According to the folding support, the telescopic part drives the first split body and the second split body which can rotate synchronously, so that the failure risk of the folding support is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft, and in particular to a folding mechanism of an aircraft and an aircraft. Background Art

[0002] Currently, there are some ducted drones on the market that use them to achieve high-altitude firefighting. However, some ducted drones are too large and inconvenient to transport. Therefore, it is necessary to design a corresponding folding mechanism to reduce the size of the ducted drone. For example, application number CN202411736732.7 provides a ducted drone structure and specifically discloses a telescopic frame 5 including a frame 18, a rotating seat 24 on which is mounted an electric push rod base 25, one end of the electric push rod base 25 is hinged to the rotating seat 24, and the other end of the electric push rod base 25 is provided with a push rod body 26. The telescopic frame is extended and retracted by two electric push rods, and the two electric push rods generate telescopic forces in different directions respectively to achieve the extension and retraction of the telescopic frame. However, when the two electric push rods are subjected to a large load for a long time, they are prone to being out of sync, and the telescopic frame is prone to failure. Summary of the Invention

[0003] The technical problem to be solved by the present application is to provide a folding mechanism of an aircraft and an aircraft, wherein the telescopic member drives a first split body and a second split body that can rotate synchronously, thereby reducing the failure risk of the folding bracket.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions: In the first aspect, the present application provides a folding mechanism of an aircraft, comprising: a folding bracket, one end of the folding bracket is used to connect to the duct, and the other end is used to connect to the fuselage of the aircraft, the folding bracket includes a first split and a second split that can rotate synchronously with each other; a telescopic member, which is arranged at an angle, and the two ends of the telescopic member are respectively hinged to the two rods on the same side of the vertical direction of the first split, or; the two ends of the telescopic member are respectively hinged to the two rods on the same side of the vertical direction of the second split; wherein, when the telescopic member is in an extended state, it is used to drive the first split and the second split to rotate synchronously with each other, and the folding mechanism changes from an unfolded state to a folded state; when the telescopic member is in a shortened state, it is used to drive the first split and the second split to rotate synchronously with each other, and the folding mechanism changes from a folded state to an unfolded state.

[0005] As an embodiment, the first split body includes a first rod and a second rod arranged at intervals, the second split body includes a third rod and a fourth rod arranged at intervals, the first rod is transmission-connected to the third rod, and the second rod is transmission-connected to the fourth rod.

[0006] As an embodiment, one end of the first rod has a first tooth, one end of the second rod has a second tooth, one end of the third rod has a third tooth, one end of the fourth rod has a fourth tooth, the first tooth is engaged with the third tooth, and the second tooth is engaged with the fourth tooth.

[0007] As an embodiment, the first tooth is located in a part of the first rod, the second tooth is located in a part of the second rod, the third tooth is located in a part of the third rod, and the fourth tooth is located in a part of the fourth rod.

[0008] As an embodiment, two mutually meshing gears are provided between the second tooth and the fourth tooth, and the two gears are respectively meshed with the second tooth and the fourth tooth.

[0009] As an embodiment, the folding mechanism further includes a support member, and the support member is rotationally connected to the first tooth, the second tooth, the third tooth, the fourth tooth and the two gears.

[0010] As an embodiment, the first split body includes two first rods, and the two first rods are connected by a first connecting shaft; a locking member is provided on one side of the third rod, and the locking member includes a locking hook, and the locking hook is used to connect with the first connecting shaft when the folding mechanism is in a folded state.

[0011] As an embodiment, the folding mechanism further includes a driving member, which is connected to the locking member and is used to drive the locking member to rotate.

[0012] As an embodiment, the folding mechanism also includes a connecting member, which includes a protrusion and a main body connected to the protrusion, one end of the first rod is rotatably connected to the protrusion, and one end of the second rod is rotatably connected to the main body at the opposite end of the protrusion.

[0013] In a second aspect, the present application provides an aircraft, comprising the folding mechanism of the aircraft described in the first aspect.

[0014] The technical solution of this application has the following beneficial effects: The folding mechanism includes a folding bracket, one end of the folding bracket is used to connect to the duct, and the other end is used to connect to the fuselage of the aircraft. The folding bracket includes a first split and a second split that can rotate synchronously with each other. In this way, when the first split or the second split is driven to rotate, the other split can also be driven to rotate synchronously to achieve synchronization; the folding mechanism also includes an inclined telescopic member, the two ends of the telescopic member are respectively hinged to two rods on the same side of the vertical direction of the first split, or the two ends of the telescopic member can also be respectively hinged to two rods on the same side of the vertical direction of the second split; wherein, when the telescopic member is in an extended state, it can drive the first split and the second split to rotate synchronously with each other, so that the folding mechanism changes from an unfolded state to a folded state; when the telescopic member is in a shortened state, it can drive the first split and the second split to rotate synchronously with each other, so that the folding mechanism changes from a folded state to an unfolded state, and since the telescopic member only applies force to the first split or the second split, the first split or the second split can synchronously drive the other split to rotate together, thereby achieving folding or extension of the folding mechanism. Compared with two electric push rods generating telescopic forces in different directions, the problem of malfunction of the folding mechanism can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of the structure of an aircraft provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the folding mechanism provided in an embodiment of the present application in an unfolded state; Figure 3 A schematic diagram of the structure of the folding mechanism provided in an embodiment of the present application in a folded state; Figure 4 Schematic diagram of the structure of the folding mechanism provided by the embodiment of the present application in the unfolded state from different perspectives; Figure 5 Schematic diagram of the structure of the folding mechanism provided in an embodiment of the present application in the folded state from different perspectives.

[0017] Icons: 1-first split body; 11-first rod; 111-first tooth; 12-second rod; 121-second tooth; 13-first connecting shaft; 2-second split body; 21-third rod; 211-third tooth; 22-fourth rod; 241-fourth tooth; 25-second connecting shaft; 3-body; 31-first hanging ear; 32-second hanging ear; 4-telescopic member; 5-support member; 6-locking member; 7-connecting member; 71-protrusion; 72-main body; 8-bracket. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0019] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0020] On the first aspect, an embodiment of the present application provides a folding mechanism for an aircraft, which can connect the duct to the fuselage 3 of the aircraft, and after folding, can reduce the overall volume of the aircraft, making it easier to transport. At the same time, it also makes it easier for the aircraft to pass through some narrow spaces, making it easier to extinguish fires.

[0021] like Figures 1 to 3 As shown, the folding mechanism includes a folding bracket, one end of the folding bracket is used to connect with the duct, and the other end is used to connect with the fuselage 3 of the aircraft. The folding bracket includes a first split 1 and a second split 2 that can rotate synchronously with each other. In this way, when the first split 1 or the second split 2 is driven to rotate, the other split can also be driven to rotate synchronously to achieve synchronization; the folding mechanism also includes an obliquely arranged telescopic member 4, the two ends of the telescopic member 4 are respectively hinged to the two rods on the same side of the vertical direction of the first split 1, or; the two ends of the telescopic member 4 can also be respectively hinged to the two rods on the same side of the vertical direction of the second split 2; wherein, when the telescopic member 4 is tilted, the two ends of the telescopic member 4 are respectively hinged to the two rods on the same side of the vertical direction of the second split 2; When the telescopic member 4 is in the extended state, it can drive the first split 1 and the second split 2 to rotate synchronously with each other, so that the folding mechanism changes from the unfolded state to the folded state; when the telescopic member 4 is in the shortened state, it can drive the first split 1 and the second split 2 to rotate synchronously with each other, and the folding mechanism changes from the folded state to the unfolded state. Moreover, since the telescopic member 4 only applies force to the first split 1 or the second split 2, the first split 1 or the second split 2 can synchronously drive the other split to rotate together, thereby realizing the folding or extension of the folding mechanism. Compared with two electric push rods generating extension forces in different directions respectively, the problem of malfunction of the folding mechanism can be reduced.

[0022] Optionally, the first split body 1 can be connected to the duct, and the second split body 2 can be connected to the fuselage 3 of the aircraft. Of course, the first split body 1 can also be connected to the fuselage 3 of the aircraft, and the second split body 2 can be connected to the duct. For the sake of convenience of description, in the embodiment of the present application, the body connected to the duct is limited to the first split body 1, and the body connected to the fuselage 3 of the aircraft is limited to the second split body 2.

[0023] Optionally, two telescopic parts 4 can be installed on the first split body 1, the inclination directions of the two telescopic parts 4 are consistent, and the two telescopic parts 4 are respectively located on both sides of the first split body 1; of course, two telescopic parts 4 can also be set on the second split body 2, and the inclination directions of the two telescopic parts 4 are consistent.

[0024] like Figure 2 and 3 As shown in , 4 and 5, optionally, the first split 1 includes two first rods 11 and two second rods 12, the two first rods 11 are arranged in parallel, and the two first rods 11 are located above the two second rods 12 in the unfolded state, and the first rods 11 and the second rods 12 on the corresponding sides are also located on the same vertical plane, wherein the first ends of the two first rods 11 and the two second rods 12 are hinged to the duct, and the second ends are rotatably connected to the second split 2; one end of the telescopic member 4 can be hinged to the first end of the first rod 11 on the same side, and the other end can be hinged to the second end of the second rod 12 on the same side, and the straight line formed by the hinge position of the first rod 11 and the second rod 12 with the duct respectively forms a triangular structure, the telescopic member 4 and the second rod 12, because the first ends of the first rod 11 and the second rod 12 are hinged to the duct, when the telescopic member 4 is gradually extended, with the duct as a reference, the second rod 12 is hinged to the duct When the second lever 12 is in the same swing direction as the first lever 11, the first lever 11 and the second lever 12 are gradually moved closer to each other, thereby realizing the folding of the first split body 1; and since the second split body 2 is transmission-connected to the first split body 1, when the first lever 11 and the second lever 12 are swinging, the third lever 21 and the fourth lever 22 in the second split body 2 that are transmission-connected to the first lever 11 and the second lever 12 are also driven to swing synchronously, and the second split body 2 is folded toward the first split body 1, thereby realizing the folding state of the folding structure. At the same time, the first split body 1 and the second split body 2 are mechanically connected to achieve synchronous rotation. Compared with the electric push rod controlling the first split body 1 and the second split body 2 separately, the failure problem of the folding mechanism can be reduced, and the synchronous movement of the first split body 1 and the second split body 2 can also be ensured.

[0025] When the folding mechanism needs to be unfolded, the telescopic member 4 is gradually shortened, and the movement process of each rod is opposite to the above folding process.

[0026] like Figure 2 As shown, optionally, the second split body 2 includes two third rods 21 and two fourth rods 22, and the two third rods 21 are arranged in parallel. The two third rods 21 are located above the two fourth rods 22 when the folding mechanism is unfolded, and the third rods 21 and the fourth rods 22 on the corresponding sides are also located on the same vertical plane, wherein the first ends of the two third rods 21 and the two fourth rods 22 are hinged to the fuselage 3, and the second ends are respectively transmission connected to the first rod 11 and the second rod 12; when the first rod 11 and the second rod 12 swing relative to the fuselage 3, the third rod 21 and the fourth rod 22 are also synchronously driven to swing, thereby realizing the folding and unfolding of the folding mechanism.

[0027] When the telescopic member 4 is gradually shortened, the folding mechanism changes from a folded state to an unfolded state.

[0028] The above implementation process is described when the telescopic member 4 is hinged to the first rod 11 and the second rod 12 respectively. If the telescopic member 4 is hinged to the third rod 21 and the fourth rod 22, the process is the same.

[0029] like Figure 2 and 3 As shown, optionally, the first split body 1 also includes a plurality of first connecting shafts 13, wherein the two ends of one first connecting shaft 13 are respectively rotatably connected to one end of the two first rods 11, and the other first connecting shafts 13 are respectively rotatably connected to one end of the two second rods 12, so as to improve the structural stability and structural strength of the first split body 1; the second split body 2 also includes a plurality of second connecting shafts 25, wherein the two ends of the second connecting shafts 25 are respectively hinged to one end of the two third rods 21, and the other two are respectively rotatably connected to one end of the two fourth rods 22, so as to improve the structural stability and structural strength of the second split body 2.

[0030] Optionally, the telescopic member 4 may also be hinged to the first end of the third rod 21 and the second end of the fourth rod 22 on the same side in some cases.

[0031] like Figure 1 As shown, optionally, two first hanging ears 31 and two second hanging ears 32 are provided on the fuselage 3, and the two first hanging ears 31 are hinged to the first ends of the two third rods 21 through the second connecting shaft 25; the two second hanging ears 32 are also hinged to the first ends of the two fourth rods 22 through the second connecting shaft 25.

[0032] Optionally, the telescopic part 4 can be an electric telescopic rod, including components such as a motor, a reduction gear, a screw, a nut, and a guide rail, and linear motion is achieved by driving the screw to rotate by the motor; of course, in some cases, the telescopic part 4 can also be a hydraulic cylinder or an air cylinder or an electromagnetic telescopic mechanism or a multi-section electric lifting column, etc., anything that can achieve the telescopic function is sufficient, and the embodiments of this application are not limited thereto.

[0033] like Figure 2 and 4 As shown, as an embodiment, the first split body 1 includes a first rod 11 and a second rod 12 arranged at intervals, and the second split body 2 includes a third rod 21 and a fourth rod 22 arranged at intervals. The first rod 11 is transmission-connected to the third rod 21, and the second rod 12 is transmission-connected to the fourth rod 22. In this way, when the telescopic member 4 is hinged to the first rod 11 and the second rod 12, the telescopic movement of the telescopic member 4 can drive the first rod 11 and the second rod 12 to swing relative to the fuselage 3, and synchronously transmit the power to the third rod 21 and the fourth rod 22, so that the third rod 21 and the fourth rod 22 also swing, and the swinging direction is opposite to that of the first rod 11 and the second rod 12, thereby realizing the folding and unfolding of the folding mechanism.

[0034] Optionally, when the telescopic member 4 is hinged to the third rod 21 and the fourth rod 22 , the folding and unfolding principles of the folding mechanism are the same as described above.

[0035] Optionally, two of each of the first rod 11 , the second rod 12 , the third rod 21 and the fourth rod 22 are provided. Of course, more of the two may also be provided.

[0036] Optionally, one end of the first rod 11 and the third rod 21, and one end of the second rod 12 and the fourth rod 22 can be connected by a belt to achieve synchronous rotation of the first split 1 and the second split 2; of course, they can also be connected by a chain to achieve synchronous rotation.

[0037] like Figures 2 to 5 As shown, as an embodiment, one end of the first rod 11 has a first tooth 111, one end of the second rod 12 has a second tooth 121, one end of the third rod 21 has a third tooth 211, and one end of the fourth rod 22 has a fourth tooth 241. The first tooth 111 is engaged with the third tooth 211, and the second tooth 121 is engaged with the fourth tooth 241, thereby realizing a transmission connection between the first split body 1 and the second split body 2. When the first split body 1 or the second split body 2 is driven to fold or unfold, force can also be transmitted to the split body connected thereto through a mechanical connection, so as to realize the folding or unfolding of the entire folding mechanism, without the need to respectively connect the first split body 1 and the second split body 2 through multiple electric push rods. In the embodiment of the present application, the telescopic force brought by the telescopic member 4 on the first split body 1 or the second split body 2 can be transmitted to the first split body 1 and the second split body 2, and the mechanical connection can realize the synergy between the first split body 1 and the second split body 2, thereby reducing the risk of failure of the folding mechanism.

[0038] Optionally, the first rod 11 , the second rod 12 , the third rod 21 and the fourth rod 22 all have teeth at their second ends.

[0039] Optionally, during the folding process, the first rod 11 and the third rod 21 rotate relative to each other, and the second rod 12 and the fourth rod 22 rotate relative to each other.

[0040] like Figure 2 、 4 As shown in Figure 5, as an embodiment, the first tooth 111 is located in a part of the first rod 11, the second tooth 121 is located in a part of the second rod 12, the third tooth 211 is located in a part of the third rod 21, and the fourth tooth 241 is located in a part of the fourth rod 22, that is, the teeth on the first rod 11, the second rod 12, the third rod 21 and the fourth rod 22 are all half-tooth structures, which avoids the first rod 11, the second rod 12, the third rod 21 and the fourth rod 22 from being a full-tooth structure, and can increase the structural strength of the first rod 11, the second rod 12, the third rod 21 and the fourth rod 22, thereby also improving the stability of the folding mechanism.

[0041] Optionally, the full-tooth structure means that the end of the first rod 11 is fully surrounded by teeth, while the half-tooth structure means that at least half of one end of the first rod 11 is covered with teeth.

[0042] like Figures 2 to 5 As shown, as an embodiment, two mutually meshing gears are provided between the second tooth 121 and the fourth tooth 241, and the two gears are respectively meshed with the second tooth 121 and the fourth tooth 241. By providing two mutually meshing gears between the second tooth 121 and the fourth tooth 241, on the one hand, power transmission between the first split body 1 and the second split body 2 can be achieved, and synchronization can be achieved; on the other hand, as shown in FIG. Figure 5 As shown, in the folded state, the two gears can increase the distance between the second rod 12 and the fourth rod 22 after folding, so that the second rod 12 can swing as much as possible and approach the vertical state, and at the same time, the fourth rod 22 is close to the third rod 21 and is also close to the vertical state, thereby further reducing the space after folding and improving the space utilization of the folding mechanism; if there are no two gears, an angle will be formed between the fourth rod 22 and the second rod 12 after folding, making the folded volume larger.

[0043] Optionally, in some cases, if the telescopic member 4 is hinged to the third rod 21 and the fourth rod 22 , two gears may be provided between the first tooth 111 and the third tooth 211 .

[0044] Optionally, the diameters of the two gears may be the same as the diameters of the first tooth 111 and the third tooth 211 , so that the second rod 12 and the fourth rod 22 are in a vertical state after folding, thereby reducing the volume of the folding mechanism.

[0045] like Figure 2 and 5As shown, as an embodiment, the folding mechanism also includes a support member 5, which is rotatably connected to the first tooth 111, the second tooth 121, the third tooth 211, the fourth tooth 241 and the two gears. By providing the support member 5, the first sub-body 1 and the second sub-body 2 are supported and connected, thereby improving the stability of the folding structure. At the same time, the support member 5 also supports the two gears, so that the telescopic force of the telescopic member 4 can be smoothly transmitted to the second sub-body 2 through the first sub-body 1, so that the entire folding mechanism can operate smoothly.

[0046] Optionally, the support member 5 is a sheet-like structure, and a support member 5 is provided on both sides of each gear.

[0047] Optionally, the gear can be rotatably connected to the support members 5 on both sides through a shaft, and a limiting structure is provided at both ends.

[0048] Optionally, the gears may be made of nylon to reduce the weight of the aircraft; the number of gears provided is an even number.

[0049] like Figure 2 As shown, optionally, the support member 5 and the first rod member 11 can be hinged through a first connecting shaft 13, the first connecting shaft 13 can pass through the end of the first rod member 11, and a limiting structure can be set to prevent the support member 5 from shaking; the support member 5 and the second rod member 12 can also be hinged through the first connecting shaft 13; the support member 5 and the third rod member 21 and the fourth rod member 22 are hinged through the second connecting shaft 25.

[0050] like Figure 2 、 3 As shown in Figure 5, as an embodiment, the first split body 1 includes two first rods 11, and the two first rods 11 are connected by a first connecting shaft 13; a locking member 6 is provided on one side of the third rod 21, and the locking member 6 includes a locking hook, which is used to connect with the first connecting shaft 13 when the folding mechanism is in a folded state, thereby locking the distance between the folded first rod 11 and the third rod 21, limiting the rotation of the gear, and also limiting the unfolding of the folding mechanism, so that the folding mechanism has good resistance to external impact, avoids the folding mechanism from accidentally unfolding when subjected to external force, and facilitates transportation; at the same time, the locking of the folding mechanism by the locking member 6 can also stop the telescopic member 4 from working, reducing energy consumption.

[0051] Optionally, the locking member 6 can be manually moved to achieve locking.

[0052] like Figure 2 As shown, two locking members 6 can be fixed at both ends of one of the second connecting shafts 25 to improve the stability after locking.

[0053] As an embodiment, the folding mechanism further includes a driving member (not shown in the figure), which is connected to the locking member 6 and is used to drive the locking member 6 to rotate. When the folding mechanism is in a folded state, the locking member 6 is driven by the driving member to rotate, thereby achieving automatic locking of the folding mechanism.

[0054] Optionally, the driving member may be in transmission connection with the locking member 6 , and the driving member may determine the rotation angle of the driving member through an angle sensor.

[0055] Optionally, the driving member may be a motor, and the driving member may be fixed to one side of the third rod 21 or to the second connecting shaft 25 .

[0056] Of course, the locking member 6 may also be able to control the deflection angle by electromagnetic means, for example, by using a magnet and a Hall sensor to determine the deflection angle of the locking member 6 so that the locking member 6 can smoothly lock the first connecting shaft 13 .

[0057] Of course, the locking member 6 may also be provided on the first connecting shaft 13 to lock the second connecting shaft 25 .

[0058] like Figure 2 、 4 As shown in Figure 5, as an embodiment, the folding mechanism further includes a connecting member 7, the connecting member 7 includes a protruding portion 71 and a main body 72 connected to the protruding portion 71, one end of the first rod 11 is hinged to the protruding portion 71, and one end of the second rod 12 is hinged to the main body 72 at the opposite end of the protruding portion 71. By providing the connecting member 7, and the connecting member 7 having the protruding portion 71, the hinge position of the first rod 11 and the connecting member 7 is closer to the fuselage 3 than the hinge position of the second rod 12 and the main body 72, that is, the hinge position of the first rod 11 and the connecting member 7 Compared with the hinge position of the second rod 12 and the main body 72, they are not on the same vertical line, but are in a convex state. In this way, when the folding mechanism is folded, the interference between the first rod 11 and the second rod 12 can be avoided, so that the first rod 11 and the second rod 12 can be as parallel to each other as possible after folding, thereby reducing the volume of the folding mechanism after folding, and making the third rod 21 and the fourth rod 22 close to each other after folding, thereby reducing the volume of the folding mechanism after folding and reducing the gap between the first rod 11 and the second rod 12 after folding.

[0059] Optionally, the connecting member 7 is a sheet-like structure, and the protruding portion 71 and the main body 72 are L-shaped structures.

[0060] Optionally, the connecting member 7 and the duct may be hinged via an axis, and a limiting structure may be provided at the hinged position.

[0061] Optionally, the connecting member 7 is a sheet-like structure; in some cases, the second rod 12 may be hinged to the protrusion 71 .

[0062] like Figure 4 and 5 As shown, optionally, the duct includes a bracket 8 located outside the duct body, the bracket 8 supports the duct as a whole, the bracket 8 is connected to the connecting member 7 through an axis, and the first end of the second rod 12 is also connected to the bracket 8 through an axis.

[0063] like Figure 2 As shown, optionally, the protrusion 71, the first rod 11, and the telescopic member 4 are hinged through the first connecting shaft 13, and an axial limiting component can also be set between two adjacent parts on the shaft to avoid contact friction between adjacent parts.

[0064] Optionally, in the embodiment of the present application, a limiting structure is provided at each hinged position to improve the stability of the folding mechanism, and an axial limiting component is provided between adjacent parts on the shaft.

[0065] Optionally, an accommodating opening is provided at the position where the first rod 11 and the second rod 12 are connected to the connecting member 7, so as to reduce the friction between the connecting member 7; an accommodating opening is also provided at the position where the third rod 21 and the fourth rod 22 are connected to the first hanging ear 31 and the second hanging ear 32 respectively, also for the purpose of reducing friction.

[0066] On the second aspect, an embodiment of the present application also provides an aircraft, which includes a fuselage 3 and ducts arranged on both sides of the fuselage 3. The ducts and the fuselage 3 are connected by the folding mechanism provided by the first aspect, which is convenient for transportation and also reduces the volume to facilitate passing through narrow areas.

[0067] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

[0068] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

[0069] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A folding mechanism for an aircraft, characterized in that: include: a folding bracket, one end of the folding bracket being connected to the duct and the other end being connected to the fuselage of the aircraft, the folding bracket comprising a first split body and a second split body that are rotatable synchronously with each other; a telescopic member, arranged obliquely, with both ends of the telescopic member being hinged to two rods on the same side of the first split body in the vertical direction, or; The two ends of the telescopic member are respectively hinged to the two rods on the same side of the second split body in the vertical direction; Wherein, when the telescopic member is in the extended state, it is used to drive the first split body and the second split body to rotate synchronously with each other, and the folding mechanism changes from the unfolded state to the folded state; When the telescopic member is in the shortened state, it is used to drive the first split body and the second split body to rotate synchronously with each other, and the folding mechanism changes from the folded state to the unfolded state.

2. The folding mechanism of the aircraft according to claim 1, characterized in that: The first split body includes a first rod and a second rod arranged at intervals, the second split body includes a third rod and a fourth rod arranged at intervals, the first rod is transmission-connected to the third rod, and the second rod is transmission-connected to the fourth rod.

3. The folding mechanism of the aircraft according to claim 2, characterized in that: One end of the first rod has a first tooth, one end of the second rod has a second tooth, one end of the third rod has a third tooth, one end of the fourth rod has a fourth tooth, the first tooth is engaged with the third tooth, and the second tooth is engaged with the fourth tooth.

4. The folding mechanism of the aircraft according to claim 3, characterized in that: The first tooth is located on a portion of the first rod, the second tooth is located on a portion of the second rod, the third tooth is located on a portion of the third rod, and the fourth tooth is located on a portion of the fourth rod.

5. The folding mechanism of the aircraft according to claim 3 or 4, characterized in that: Two mutually meshing gears are provided between the second tooth and the fourth tooth, and the two gears are respectively meshed with the second tooth and the fourth tooth.

6. The folding mechanism of the aircraft according to claim 5, characterized in that: The folding mechanism further includes a support member, which is rotationally connected to the first tooth, the second tooth, the third tooth, the fourth tooth and the two gears.

7. The folding mechanism of an aircraft according to any one of claims 2 to 4, characterized in that: The first split body includes two first rods, and the two first rods are connected by a first connecting shaft; A locking member is provided on one side of the third rod. The locking member includes a locking hook. The locking hook is used to connect with the first connecting shaft when the folding mechanism is in a folded state.

8. The folding mechanism of the aircraft according to claim 7, characterized in that: The folding mechanism further includes a driving member connected to the locking member and configured to drive the locking member to rotate.

9. The folding mechanism of an aircraft according to any one of claims 2 to 4, characterized in that: The folding mechanism also includes a connecting member, which includes a protrusion and a main body connected to the protrusion. One end of the first rod is rotatably connected to the protrusion, and one end of the second rod is rotatably connected to the main body at an end opposite to the protrusion.

10. An aircraft, characterized in that: The aircraft comprises the folding mechanism of the aircraft according to any one of claims 1 to 9.

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