Wing folding device and unmanned aerial vehicle
By designing a wing-folding device, the problems of low space utilization and severe aerodynamic interference of the UAV's wings were solved. The UAV is made small in size and light in weight when folded, and has a large wing surface when unfolded, with good aerodynamic characteristics and supporting long-duration flight.
Patent Information
- Application Number
- CN202422908409.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing folding-wing UAVs have low wing space utilization and suffer from serious aerodynamic interference.
A wing-folding device is designed, including a fixed shaft, a fixed seat, an unfolding mechanism, an inner wing, an outer wing, a telescopic mechanism, and a telescopic trigger mechanism. The inner wing is unfolded and the outer wing is extended through elastic parts and a limit mechanism, ensuring that the wing occupies a small space when folded and a large wing surface area when unfolded, thereby reducing aerodynamic interference.
The drone is small in size and light in weight when folded, making it easy to operate. When unfolded, the wing area is large, which improves space utilization and avoids aerodynamic interference during flight, achieving long-duration flight.
Smart Images
Figure CN223371171U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a wing folding device and a UAV. Background Art
[0002] A drone is a reusable, power-driven, unmanned aircraft that relies on air for lift. For storage, transportation, and use, drones must be compact and portable. Therefore, foldable wings are designed to effectively reduce their dimensions and enable launch or deployment from a variety of platforms.
[0003] At present, traditional folding wings mostly adopt X-wing or tandem wing layout. The effective loading space of X-wing layout UAV is relatively small, while the aerodynamic interference between the front and rear wings of tandem wing layout UAV is relatively serious. Utility Model Content
[0004] The embodiments of the present application solve the problems of low wing space utilization and severe aerodynamic interference in existing folding-wing UAVs by providing a wing folding device and a UAV.
[0005] In the first aspect, an embodiment of the present invention provides a wing folding device, which includes a fixed shaft, a fixed seat, an unfolding mechanism, an inner wing, an outer wing, a telescopic mechanism and a telescopic trigger mechanism; the fixed seat is sleeved on the fixed shaft; the unfolding mechanism includes a first rotating seat, a second rotating seat and a first elastic member; the first rotating seat and the second rotating seat are both sleeved on the fixed shaft, and the first rotating seat and the second rotating seat are both rotatably connected to the fixed shaft; the ends of the first rotating seat and the second rotating seat facing away from the fixed shaft are respectively connected to one of the inner wings; the first elastic member is sleeved on the fixed shaft, and its two ends are respectively connected to the first A rotating seat and a second rotating seat, and the first elastic member has a preset torque when the two inner wings are folded; each inner wing is respectively sleeved with an outer wing; one end of each outer wing close to the fixed axis is respectively connected to a telescopic trigger mechanism, and the other end of the telescopic trigger mechanism is connected to the fixed seat, when the two inner wings are not fully unfolded, the telescopic trigger mechanism restricts the outer wings; when the two inner wings are fully unfolded, the telescopic trigger mechanism releases the restriction on the outer wings; the telescopic mechanism is arranged in the inner cavity of the inner wing, and when the telescopic trigger mechanism releases the restriction on the outer wings, the telescopic mechanism drives the outer wings to extend.
[0006] In combination with the first aspect, in a possible implementation, the wing folding device also includes a limiting mechanism; the limiting mechanism is installed on the fixed seat; when the two inner wings are unfolded into place, the first rotating seat and the second rotating seat both abut against the limiting mechanism to limit the rotation angle of the first rotating seat and the second rotating seat.
[0007] In combination with the first aspect, in a possible implementation, the limiting mechanism includes two limiting columns; the two limiting columns are both installed on the fixed seat; the first rotating seat and the second rotating seat are both provided with limiting grooves matching the limiting columns; when the two inner wings are unfolded into place, the limiting grooves on the first rotating seat and the second rotating seat are respectively engaged with the limiting columns at corresponding positions.
[0008] In combination with the first aspect, in a possible implementation, the wing folding device further includes a locking mechanism; the locking mechanism is arranged on the unfolding mechanism and is configured to limit the first rotating seat and the second rotating seat when the two inner wings are folded.
[0009] In combination with the first aspect, in a possible implementation, the locking mechanism includes a locking pin and a second elastic member; locking holes are provided on the first rotating seat and the second rotating seat, and when the two inner wings are folded, the axes of the two locking holes coincide; the second elastic member is sleeved on the locking pin; when the two inner wings are folded, the second elastic member is in a compressed state, the locking pin is inserted into the two locking holes, and the top end of the locking pin abuts against the launching tube.
[0010] In combination with the first aspect, in a possible implementation, the telescopic mechanism includes a first centering shaft, a second centering shaft and a third elastic member; the first centering shaft is connected to the inner wing and is located at the end of the inner wing close to the fixed shaft; the second centering shaft is connected to the outer wing and is located at the end of the outer wing away from the fixed shaft; the axes of the first centering shaft and the second centering shaft coincide; one end of the third elastic member is connected to the inner wing and is sleeved on the first centering shaft, and the other end is connected to the outer wing and is sleeved on the second centering shaft; the third elastic member is in a compressed state when the outer wing is restricted by the telescopic trigger mechanism.
[0011] In combination with the first aspect, in a possible implementation, the telescopic mechanism further includes a centering sleeve; the centering sleeve is arranged in the inner cavity of the inner wing and is sleeved on the third elastic member; the axis of the centering sleeve coincides with the axis of the first centering shaft.
[0012] In combination with the first aspect, in a possible implementation, the telescopic trigger mechanism includes a rope, a U-shaped plug and a socket; the socket is connected to the fixed seat, so two socket holes are provided on the socket; one end of the rope is connected to the end of the outer wing close to the fixed axis, and the other end is connected to the bottom plate of the U-shaped plug; the first side plate and the second side plate of the U-shaped plug have a height difference, the first side plate is inserted into one of the plug holes to match its small gap, and the insertion depth of the first side plate is a; the second side plate is inserted into another of the plug holes to match its large gap, and the length of the second side plate extending out of the plug hole is b, b﹥a; when the inner wing is unfolded into place, the first rotating seat and the second rotating seat respectively abut the second side plate of the U-shaped plug at the corresponding position to disengage the U-shaped plug from the socket.
[0013] In combination with the first aspect, in a possible implementation, the wing folding device also includes a bearing and a distance sleeve; a bearing is provided at the connection between the first rotating seat and the second rotating seat and the fixed shaft; the inner ring of the bearing is connected to the fixed shaft, and the outer ring of the bearing is connected to the first rotating seat or the second rotating seat at the corresponding position; the distance sleeve is sleeved on the fixed shaft and is located between the two bearings; the first elastic member is sleeved on the distance sleeve.
[0014] In a second aspect, an embodiment of the present invention provides a drone comprising the above-mentioned wing folding device.
[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
[0016] The present invention provides a wing-folding device comprising a fixed shaft, a fixed seat, an unfolding mechanism, inner wings, outer wings, a telescopic mechanism, and a telescopic trigger mechanism. The fixed seat is mounted on the fixed shaft. The unfolding mechanism comprises a first rotating seat, a second rotating seat, and a first elastic member. The first and second rotating seats are both mounted on the fixed shaft and are rotatably connected to the fixed shaft. The ends of the first and second rotating seats facing away from the fixed shaft are each connected to an inner wing. The first elastic member is mounted on the fixed shaft, with its ends connected to the first and second rotating seats, respectively. The first elastic member exerts a preset torque when the two inner wings fold. Each inner wing is mounted on an outer wing. The end of each outer wing closest to the fixed shaft is connected to a telescopic trigger mechanism, the other end of which is connected to the fixed seat. When the two inner wings are not fully unfolded, the telescopic trigger mechanism restrains the outer wings. When the two inner wings are fully unfolded, the telescopic trigger mechanism releases the restraint on the outer wings. The telescopic mechanism is disposed within the inner cavity of the inner wing. When the telescopic trigger mechanism releases the restraint on the outer wings, the telescopic mechanism causes the outer wings to extend. When the drone is launched from the launch tube, the first elastic member is released from its compressed state, driving the first and second rotating seats to rotate. The first and second rotating seats respectively drive the corresponding inner wings to rotate, thereby deploying the two inner wings. When the inner wings are fully deployed, the telescopic trigger mechanism releases the restriction on the outer wings, and the telescopic mechanism drives the outer wings to extend. When folded, the drone has a small size, takes up little space, is lightweight, and is easy to operate. When fully deployed, the wing surface area is large, thereby increasing the effective loading space of the drone and improving the wing space utilization rate. At the same time, it has good aerodynamic characteristics during flight, can avoid aerodynamic interference, and achieve long-duration flight. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The structure diagram of the two inner wings when they are unfolded is provided in the embodiment of the present application. Figure 1 ;
[0019] Figure 2 for Figure 1 A magnified view of point A in the figure;
[0020] Figure 3 for Figure 1 Enlarged view of point B in FIG.
[0021] Figure 4This is a schematic diagram of the structure of the two inner wings provided in an embodiment of the present application when they are not deployed;
[0022] Figure 5 for Figure 4 Enlarged view of point C in the figure;
[0023] Figure 6 A cross-sectional view of two inner wings deployed according to an embodiment of the present application;
[0024] Figure 7 This is a schematic diagram of the installation of the two inner wings provided in the embodiment of the present application when they are not deployed;
[0025] Figure 8 A schematic diagram of the structure of the fixing seat, the deployment mechanism and the limiting mechanism provided in an embodiment of the present application;
[0026] Figure 9 The structure diagram of the two inner wings when they are unfolded is provided in the embodiment of the present application. Figure 2 ;
[0027] Figure 10 for Figure 9 The enlarged view of point D in the figure;
[0028] Figure 11 A schematic diagram of the structure of the telescopic trigger mechanism provided in an embodiment of the present application;
[0029] Figure 12 for Figure 11 Enlarged view of point E in .
[0030] Icons: 1-fixed axis; 2-fixed seat; 3-unfolding mechanism; 31-first rotating seat; 32-second rotating seat; 33-first elastic member; 4-locking mechanism; 41-locking pin; 42-second elastic member; 5-inner wing; 6-outer wing; 7-telescopic mechanism; 71-first centering axis; 72-second centering axis; 73-third elastic member; 74-centering sleeve; 8-telescopic trigger mechanism; 81-rope; 82-U-shaped plug-in block; 83-plug-in seat; 9-limiting mechanism; 91-limiting column; 10-bearing; 11-distance sleeve; 12-launching tube. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like 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 embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.
[0033] like Figures 1 to 12 As shown, the embodiment of the present invention provides a wing folding device, which includes a fixed shaft 1, a fixed seat 2, an unfolding mechanism 3, an inner wing 5, an outer wing 6, a telescopic mechanism 7 and a telescopic trigger mechanism 8. The fixed seat 2 is sleeved on the fixed shaft 1.
[0034] like Figure 6 As shown, the unfolding mechanism 3 includes a first rotating seat 31, a second rotating seat 32 and a first elastic member 33. The first rotating seat 31 and the second rotating seat 32 are both sleeved on the fixed shaft 1, and the first rotating seat 31 and the second rotating seat 32 are both rotatably connected to the fixed shaft 1. The ends of the first rotating seat 31 and the second rotating seat 32 facing away from the fixed shaft 1 are respectively connected to an inner wing 5. The first elastic member 33 is sleeved on the fixed shaft 1, and its two ends are respectively connected to the first rotating seat 31 and the second rotating seat 32, and the first elastic member 33 has a preset torque when the two inner wings 5 are folded. Specifically, the first elastic member 33 is a torsion spring. In actual application, after the two inner wings 5 are folded under the action of external force, the first elastic member 33 is in a compressed state.
[0035] In the embodiment of the present application, an outer wing 6 is respectively mounted on each inner wing 5. One end of each outer wing 6 close to the fixed axis 1 is connected to a telescopic trigger mechanism 8, and the other end of the telescopic trigger mechanism 8 is connected to the fixed seat 2. When the two inner wings 5 are not fully deployed, the telescopic trigger mechanism 8 restricts the outer wings 6. When the two inner wings 5 are fully deployed, the telescopic trigger mechanism 8 releases the restriction on the outer wings 6. The telescopic mechanism 7 is arranged in the inner cavity of the inner wing 5. When the telescopic trigger mechanism 8 releases the restriction on the outer wings 6, the telescopic mechanism 7 drives the outer wings 6 to extend. After the body is ejected from the launch tube 12, the first elastic member 33 is released from the compressed state and drives the first rotating seat 31 and the second rotating seat 32 to rotate. The first rotating seat 31 and the second rotating seat 32 respectively drive the corresponding inner wings 5 to rotate to realize the deployment of the two inner wings 5. When the inner wings 5 are fully deployed, the telescopic trigger mechanism 8 releases the restriction on the outer wings 6, and the telescopic mechanism 7 drives the outer wings 6 to extend. When folded, the drone has a small size, takes up little space, is lightweight, and is easy to operate. When fully unfolded, the wing surface area is large, thereby increasing the effective loading space of the drone and improving the wing space utilization rate. At the same time, it has good aerodynamic characteristics during flight, can avoid aerodynamic interference, and achieve long-endurance flight.
[0036] An embodiment of the present invention provides a wing folding device, which includes a fixed shaft 1, a fixed seat 2, an unfolding mechanism 3, an inner wing 5, an outer wing 6, a telescopic mechanism 7 and a telescopic trigger mechanism 8. The fixed seat 2 is mounted on the fixed shaft 1. The unfolding mechanism 3 includes a first rotating seat 31, a second rotating seat 32 and a first elastic member 33. The first rotating seat 31 and the second rotating seat 32 are both mounted on the fixed shaft 1, and the first rotating seat 31 and the second rotating seat 32 are both rotatably connected to the fixed shaft 1. The ends of the first rotating seat 31 and the second rotating seat 32 facing away from the fixed shaft 1 are respectively connected to an inner wing 5. The first elastic member 33 is mounted on the fixed shaft 1, and its two ends are respectively connected to the first rotating seat 31 and the second rotating seat 32, and the first elastic member 33 has a preset torque when the two inner wings 5 are folded. An outer wing 6 is respectively mounted on each inner wing 5. Each outer wing 6 is connected to a telescopic trigger mechanism 8 at one end near the fixed axis 1, and the other end of the telescopic trigger mechanism 8 is connected to the fixed seat 2. When the two inner wings 5 are not fully deployed, the telescopic trigger mechanism 8 restrains the outer wings 6. When the two inner wings 5 are fully deployed, the telescopic trigger mechanism 8 releases the restraint on the outer wings 6. The telescopic mechanism 7 is disposed within the inner cavity of the inner wing 5. When the telescopic trigger mechanism 8 releases the restraint on the outer wings 6, the telescopic mechanism 7 drives the outer wings 6 to extend. After the drone is ejected from the launch tube 12, the first elastic member 33 is released from its compressed state, driving the first rotating seat 31 and the second rotating seat 32 to rotate. The first rotating seat 31 and the second rotating seat 32 respectively drive the corresponding inner wing 5 to rotate, thereby enabling the two inner wings 5 to be deployed. When the inner wings 5 are fully deployed, the telescopic trigger mechanism 8 releases the restraint on the outer wings 6, and the telescopic mechanism 7 drives the outer wings 6 to extend. When folded, the present application has a small size, takes up little space, is lightweight, and is easy to operate. When fully deployed, the wing surface area is large, thereby increasing the effective loading space of the drone and improving the wing space utilization rate. At the same time, it has good aerodynamic characteristics during flight, which can avoid aerodynamic interference and achieve long-duration flight.
[0037] In practice, the wing-folding device also includes a limiting mechanism 9 mounted on the fixed base 2. When the two inner wings 5 are fully deployed, the first rotating base 31 and the second rotating base 32 abut against the limiting mechanism 9, limiting the rotation angle of the first and second rotating bases 31, 32. Specifically, the limiting mechanism 9 limits the rotation angle of the first and second rotating bases 31, 32, thereby limiting the deployment angle of the inner wings 5.
[0038] like Figure 8As shown, the limiting mechanism 9 includes two limiting posts 91. Both limiting posts 91 are mounted on the fixed base 2. Limiting grooves matching the limiting posts 91 are provided on the first rotating base 31 and the second rotating base 32. When the two inner wings 5 are unfolded into place, the limiting grooves on the first rotating base 31 and the second rotating base 32 are respectively engaged with the limiting posts 91 at corresponding positions. In actual application, the two limiting posts 91 are respectively arranged at the maximum outer diameter of the rotation of the first rotating base 31 and the second rotating base 32 to avoid interference when the inner wings 5 are folded. Specifically, when the two inner wings 5 are unfolded into place, the limiting grooves on the first rotating base 31 and the second rotating base 32 are respectively engaged with the limiting posts 91 at corresponding positions, thereby achieving the limitation of the unfolding angle of the inner wings 5.
[0039] In practice, the wing-folding device further includes a locking mechanism 4 . This locking mechanism 4 is disposed on the unfolding mechanism 3 and is configured to limit the positions of the first rotating seat 31 and the second rotating seat 32 when the two inner wings 5 are folded. Specifically, the locking mechanism 4 limits the positions of the first rotating seat 31 and the second rotating seat 32 when the two inner wings 5 are folded, thereby locking the inner wings 5 in their folded state.
[0040] like Figure 4 、 Figure 5 and Figure 7 As shown, the locking mechanism 4 includes a locking pin 41 and a second elastic member 42. Locking holes are defined in both the first and second rotating bases 31 and 32. When the inner wings 5 are folded, the axes of the two locking holes coincide. The second elastic member 42 is sleeved over the locking pin 41. When the inner wings 5 are folded, the second elastic member 42 is compressed, and the locking pin 41 is inserted into the two locking holes, with the top end of the locking pin 41 contacting the launch tube 12. In actual application, when the two inner wings 5 are folded into place, the axes of the two locking holes coincide, and then the locking pin 41 and the second elastic member 42 are inserted into the locking hole, and then the fuselage is installed into the launch tube 12. After the fuselage is installed in place, the second elastic member 42 is in a compressed state and the top end of the locking pin 41 abuts against the inner wall of the launch tube 12 to press the locking pin 41, thereby achieving the locking of the inner wing 5 in the folded state; after the fuselage is ejected from the launch tube 12, the locking of the locking pin 41 by the launch tube 12 is released, and the locking pin 41 pops out from the locking hole under the elastic force of the second elastic member 42, thereby releasing the locking of the inner wing 5 in the folded state.
[0041] like Figures 1 to 3As shown, the telescopic mechanism 7 includes a first centering shaft 71, a second centering shaft 72, and a third elastic member 73. The first centering shaft 71 is connected to the inner wing 5 and is located at the end of the inner wing 5 closest to the fixed axis 1. The second centering shaft 72 is connected to the outer wing 6 and is located at the end of the outer wing 6 away from the fixed axis 1. The axes of the first centering shaft 71 and the second centering shaft 72 coincide. One end of the third elastic member 73 is connected to the inner wing 5 and sleeved on the first centering shaft 71, while the other end is connected to the outer wing 6 and sleeved on the second centering shaft 72. The third elastic member 73 is compressed when the outer wing 6 is restrained by the telescopic trigger mechanism 8. When the inner wing 5 is folded, the outer wing 6 is restrained by the telescopic trigger mechanism 8, and the third elastic member 73 is compressed. When the inner wing 5 is fully deployed, the telescopic trigger mechanism 8 releases the restraint on the outer wing 6, and the outer wing 6 extends under the elastic action of the third elastic member 73. The first centering shaft 71 and the second centering shaft 72 prevent the outer wing 6 from drifting when extended.
[0042] Continue to refer to Figure 2 As shown, the telescopic mechanism 7 further includes a centering sleeve 74. The centering sleeve 74 is disposed within the inner cavity of the inner wing 5 and sleeved onto the third elastic member 73. The axis of the centering sleeve 74 coincides with the axis of the first centering shaft 71. The centering sleeve 74 limits the extension direction of the outer wing 6, preventing it from deflecting during extension.
[0043] like Figures 9-12As shown, the telescopic trigger mechanism 8 includes a rope 81, a U-shaped plug-in block 82 and a socket 83. The socket 83 is connected to the fixed seat 2, and two plug-in holes are provided on the socket 83. One end of the rope 81 is connected to the end of the outer wing 6 close to the fixed axis 1, and the other end is connected to the bottom plate of the U-shaped plug-in block 82. The first side plate and the second side plate of the U-shaped plug-in block 82 have a height difference. The first side plate is inserted into one plug-in hole to match the small gap therebetween, and the insertion depth of the first side plate is a. The second side plate is inserted into another plug-in hole to match the large gap therebetween, and the length of the second side plate extending out of the plug-in hole is b, b>a. When the inner wing 5 is unfolded into place, the first rotating seat 31 and the second rotating seat 32 respectively abut against the second side plates of the U-shaped plug-in block 82 at the corresponding positions to disengage the U-shaped plug-in block 82 from the socket 83. Specifically, the rope 81 is a steel wire rope. Furthermore, the fixing direction of the rope 81 and the disengagement direction of the U-shaped plug 82 are both perpendicular to the extension direction of the outer wing 6 to ensure that the outer wing 6 can be restricted when the outer wing 6 is folded. In addition, when the inner wing 5 is folded, the rope 81 is in a tensioned state to restrict the outer wing 6. In actual application, when the inner wing 5 is unfolded, the first rotating seat 31 and the second rotating seat 32 respectively abut the second side plate of the U-shaped plug 82 at the corresponding position. Since the length b of the second side plate extending out of the plug hole is greater than the insertion depth a of the first side plate, the first side plate is smoothly disengaged after the first rotating seat 31 and the second rotating seat 32 push the second side plate at the corresponding position out by the distance b. The second side plate and the plug hole have a large clearance fit, so after the first side plate is disengaged, the second side plate is also disengaged, thereby causing the U-shaped plug 82 to disengage from the plug seat 83, thereby releasing the restriction on the outer wing 6 and allowing the outer wing 6 to extend.
[0044] like Figure 6 As shown, the wing folding device also includes a bearing 10 and a distance sleeve 11. A bearing 10 is provided at the connection between the first rotating seat 31 and the second rotating seat 32 and the fixed shaft 1. The inner ring of the bearing 10 is connected to the fixed shaft 1, and the outer ring of the bearing 10 is connected to the first rotating seat 31 or the second rotating seat 32 at the corresponding position. The distance sleeve 11 is sleeved on the fixed shaft 1 and is located between the two bearings 10. The first elastic member 33 is sleeved on the distance sleeve 11. Specifically, the bearing 10 can reduce the friction force when the first rotating seat 31 and the second rotating seat 32 rotate, thereby improving the rotation efficiency.
[0045] An embodiment of the utility model provides a UAV, which includes the above-mentioned wing folding device.
[0046] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.
[0047] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.
Claims
1. A wing folding device, characterized in that: It comprises a fixed shaft (1), a fixed seat (2), an unfolding mechanism (3), inner wings (5), outer wings (6), a telescopic mechanism (7) and a telescopic trigger mechanism (8); The fixing seat (2) is sleeved on the fixing shaft (1); The unfolding mechanism (3) comprises a first rotating seat (31), a second rotating seat (32) and a first elastic member (33); The first rotating seat (31) and the second rotating seat (32) are both sleeved on the fixed shaft (1), and the first rotating seat (31) and the second rotating seat (32) are both rotatably connected to the fixed shaft (1); one end of the first rotating seat (31) and the second rotating seat (32) facing away from the fixed shaft (1) are respectively connected to one of the inner wings (5); The first elastic member (33) is sleeved on the fixed shaft (1), and its two ends are respectively connected to the first rotating seat (31) and the second rotating seat (32), and the first elastic member (33) has a preset torque when the two inner wings (5) are folded; One outer wing (6) is sleeved on each inner wing (5); One end of each outer wing (6) close to the fixed shaft (1) is connected to a telescopic trigger mechanism (8), and the other end of the telescopic trigger mechanism (8) is connected to the fixed seat (2). When the two inner wings (5) are not fully deployed, the telescopic trigger mechanism (8) restricts the outer wings (6); when the two inner wings (5) are fully deployed, the telescopic trigger mechanism (8) releases the restriction on the outer wings (6). The telescopic mechanism (7) is arranged in the inner cavity of the inner wing (5); when the telescopic trigger mechanism (8) releases the restriction on the outer wing (6), the telescopic mechanism (7) drives the outer wing (6) to extend.
2. The wing folding device according to claim 1, characterized in that: Also includes a limiting mechanism (9); The limiting mechanism (9) is installed on the fixing seat (2); When the two inner wings (5) are unfolded into position, the first rotating seat (31) and the second rotating seat (32) both abut against the limiting mechanism (9) to limit the rotation angles of the first rotating seat (31) and the second rotating seat (32).
3. The wing folding device according to claim 2, characterized in that: The limiting mechanism (9) includes two limiting columns (91); The two limiting columns (91) are both mounted on the fixing seat (2); The first rotating seat (31) and the second rotating seat (32) are both provided with a limiting groove matching the limiting column (91); When the two inner wings (5) are unfolded into position, the limiting grooves on the first rotating seat (31) and the second rotating seat (32) are respectively engaged with the limiting columns (91) at corresponding positions.
4. The wing folding device according to claim 1, characterized in that: Also includes a locking mechanism (4); The locking mechanism (4) is provided on the unfolding mechanism (3) and is configured to achieve position limiting of the first rotating seat (31) and the second rotating seat (32) when the two inner wings (5) are folded.
5. The wing folding device according to claim 4, characterized in that: The locking mechanism (4) comprises a locking pin (41) and a second elastic member (42); The first rotating seat (31) and the second rotating seat (32) are both provided with locking holes, and when the two inner wings (5) are folded, the axes of the two locking holes coincide with each other; The second elastic member (42) is sleeved on the locking pin (41); When the two inner wings (5) are folded, the second elastic member (42) is in a compressed state, the locking pin (41) is inserted into the two locking holes, and the top end of the locking pin (41) abuts against the launching tube (12).
6. The wing folding device according to claim 1, characterized in that: The telescopic mechanism (7) comprises a first centering shaft (71), a second centering shaft (72) and a third elastic member (73); The first centering shaft (71) is connected to the inner wing (5) and is located at one end of the inner wing (5) close to the fixed shaft (1); The second centering shaft (72) is connected to the outer wing (6) and is located at an end of the outer wing (6) away from the fixed shaft (1); The axes of the first centering shaft (71) and the second centering shaft (72) coincide with each other; One end of the third elastic member (73) is connected to the inner wing (5) and is sleeved on the first centering shaft (71), and the other end is connected to the outer wing (6) and is sleeved on the second centering shaft (72); when the outer wing (6) is restricted by the telescopic trigger mechanism (8), the third elastic member (73) is in a compressed state.
7. The wing folding device according to claim 6, characterized in that: The telescopic mechanism (7) further includes a centering sleeve (74); The centering sleeve (74) is arranged in the inner cavity of the inner wing (5) and is sleeved on the third elastic member (73); The axis of the centering sleeve (74) coincides with the axis of the first centering shaft (71).
8. The wing folding device according to claim 1, characterized in that: The telescopic trigger mechanism (8) comprises a rope (81), a U-shaped plug block (82) and a socket (83); The plug socket (83) is connected to the fixing socket (2), so the plug socket (83) is provided with two plug holes; One end of the rope (81) is connected to one end of the outer wing (6) close to the fixed shaft (1), and the other end is connected to the bottom plate of the U-shaped plug (82); The first side plate and the second side plate of the U-shaped plug block (82) have a height difference, the first side plate is inserted into one of the plug holes to match the small gap therebetween, and the insertion depth of the first side plate is a; the second side plate is inserted into the other of the plug holes to match the large gap therebetween, and the length of the second side plate extending out of the plug hole is b, b>a; When the inner wing (5) is unfolded into position, the first rotating seat (31) and the second rotating seat (32) respectively abut against the second side plate of the U-shaped plug-in block (82) at the corresponding position, so that the U-shaped plug-in block (82) is disengaged from the plug-in seat (83).
9. The wing folding device according to claim 1, characterized in that: It also includes a bearing (10) and a distance sleeve (11); A bearing (10) is provided at each of the connection points of the first rotating seat (31) and the second rotating seat (32) with the fixed shaft (1); The inner ring of the bearing (10) is connected to the fixed shaft (1), and the outer ring of the bearing (10) is connected to the first rotating seat (31) or the second rotating seat (32) at a corresponding position; The distance sleeve (11) is sleeved on the fixed shaft (1) and is located between the two bearings (10); The first elastic member (33) is sleeved on the distance sleeve (11).
10. A drone, characterized in that: The invention comprises a wing folding device according to any one of claims 1 to 9.