Unmanned aerial vehicle and folding front wing thereof

Abstract

The utility model provides an unmanned aerial vehicle and a folding front wing thereof, the folding front wing of the unmanned aerial vehicle comprises two inner wings connected through a first folding mechanism and two outer wings respectively connected with the two inner wings through two second folding mechanisms; the first folding mechanism comprises a first rotating shaft and a torsional spring; the first rotating shaft sequentially penetrates through the overlapped part of the first inner wing and the second inner wing; the torsional spring sleeves the first rotating shaft and is positioned between the first inner wing and the second inner wing; the second folding mechanism comprises a second rotating shaft which sequentially penetrates through the inner wing and the outer wing connected with the inner wing, and a nest spring which sleeves the second rotating shaft and is positioned between the corresponding inner wing and outer wing. According to the folding front wing of the unmanned aerial vehicle, secondary folding can be formed, the axial size of the folded folding front wing of the unmanned aerial vehicle is shortened, and the folding front wing can meet the requirement of a launch canister with a small axial space after being applied to the unmanned aerial vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle and a foldable front wing thereof. Background Art

[0002] Folding-wing UAVs have been widely used due to their advantages of fast flight speed and accurate target strike. Folding-wing UAVs mainly include a fuselage, folding front wings, folding tail wings, vertical tail and propellers.

[0003] The main function of a folding-wing UAV is to fold its wings and store them in a launch tube so that the wings can be unfolded the moment it leaves the tube, thus completing the launch and takeoff.

[0004] The front wing of the folding-wing UAV in the related art is longer than the tail wing, and is folded in a single folding manner. Therefore, when the front wing of the folding-wing UAV is folded, the axial dimension of the folding-wing UAV will be relatively long. If the axial space of the launch tube is small, the folded folding-wing UAV cannot be placed in the launch tube. Utility Model Content

[0005] In view of the deficiencies of the above related technologies, the utility model proposes a folding front wing of a UAV to solve the problem that the front wing of the folding-wing UAV in the related technology adopts a single folding, resulting in a long axial dimension and cannot meet the needs of a launch tube with a small axial space.

[0006] In a first aspect, the utility model provides a folding front wing of a drone, which comprises two inner wings connected by a first folding mechanism and two outer wings respectively connected to the two inner wings by two second folding mechanisms;

[0007] The two inner wings are respectively a first inner wing and a second inner wing, one end of the first inner wing and one end of the second inner wing are overlapped with each other; the first folding mechanism comprises a first rotating shaft which sequentially passes through the overlapped parts of the first inner wing and the second inner wing, and a torsion spring which is sleeved on the first rotating shaft and located between the first inner wing and the second inner wing, two ends of the first rotating shaft are respectively pressed against the side of the first inner wing and the second inner wing which are away from each other, the first inner wing and the second inner wing are respectively rotatably connected with the first rotating shaft, and two ends of the torsion spring are respectively pressed against the first inner wing and the second inner wing; one end of the first rotating shaft is used to be fixed to the drone;

[0008] The inner wing and the outer wing connected to each other by the second folding mechanism are overlapped at one end close to each other, each of the second folding mechanisms comprises a second rotating shaft which sequentially passes through the inner wing and the outer wing connected to the inner wing, and a socket spring which is sleeved on the second rotating shaft and is located between the corresponding inner wing and the outer wing, the two ends of the second rotating shaft are respectively pressed against the side of the corresponding inner wing and the outer wing which are away from each other, the corresponding inner wing and the outer wing are respectively rotatably connected with the second rotating shaft, one end of the socket spring is clamped on the outer wing, and the other end of the socket spring is inserted into the rotating shaft;

[0009] The two outer wings are respectively a first outer wing and a second outer wing, one end of the first outer wing is connected to an end of the first inner wing away from the first folding mechanism through a second folding mechanism, and one end of the second outer wing is connected to an end of the second inner wing away from the first folding mechanism through another second folding mechanism.

[0010] Preferably, the first rotating shaft includes a first pressing portion and a first rotating portion which is formed by protruding and extending from the middle area of ​​the first pressing portion and is cylindrical, the first pressing portion presses against a side of the first inner wing away from the second inner wing, and the first rotating portion passes through the first inner wing and the second inner wing in sequence; the torsion spring is sleeved on the first rotating portion, and the first pressing portion is used to be fixed to the drone.

[0011] Preferably, the first rotating portion is provided with a step protruding radially inward, and a plurality of first mounting holes are provided on a side of the step away from the first pressing portion; the first rotating shaft also includes a first pressure plate pressed against a side of the second inner wing away from the first inner wing, through which a plurality of first screws respectively pass through the first pressure plate and the second inner wing in sequence and are respectively fixed to the plurality of first mounting holes.

[0012] Preferably, a first groove matching the torsion spring is provided on one side of the first inner wing and the second inner wing that are close to each other, and the torsion spring is accommodated in the first grooves of the first inner wing and the second inner wing.

[0013] Preferably, each of the second rotating shafts includes a second pressing portion and a second rotating portion formed by a protruding extension from the middle area of ​​the second pressing portion, the second pressing portion presses against a side of the outer wing away from the inner wing, and the second rotating portion passes through the inner wing and the outer wing connected to the inner wing in sequence; the socket spring is sleeved on the second rotating portion.

[0014] Preferably, a plurality of second mounting holes are provided on a side of the second rotating portion away from the pressing portion; each of the second rotating shafts also includes a second pressure plate pressed against a side of the outer wing away from the inner wing, through which a plurality of second screws respectively pass through the second pressure plate and the outer wing corresponding to the second pressure plate in sequence and are respectively fixed to the plurality of second mounting holes.

[0015] Preferably, a second groove matching the socket spring is provided on a side of the outer wing close to the inner wing in each of the second folding mechanisms, and the socket spring is accommodated in the second groove.

[0016] Preferably, each of the second folding mechanisms further includes a metal connecting piece fixed in the groove and used for accommodating the socket spring.

[0017] Preferably, the lengths of the two outer wings are respectively smaller than the lengths of the two inner wings.

[0018] In the second aspect, the utility model provides a drone, which includes a body, a front wing arranged at the head of the body, a tail wing hinged to the tail of the body away from the front wing, a vertical tail hinged to both sides of the tail of the body, and a propeller rotatably connected to the tail end of the body; wherein the front wing is the folding front wing of the drone mentioned above. .

[0019] Compared with the related art, the folding front wing of the UAV in the utility model is achieved by dividing the front wing into two inner wings and two outer wings, and adopting a torsion spring to realize the folding of the two inner wings, and adopting a socket spring to realize the folding of the inner and outer wings, so that the folding front wing of the UAV can form a secondary folding, which greatly shortens the axial size of the folding front wing of the UAV after folding, so that after being applied to the UAV, it can meet the needs of a launch tube with a smaller axial space, thereby correspondingly improving the space utilization rate of the launch tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0021] Figure 1 A schematic diagram of the overall structure of the folding front wing of the drone provided by an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of the structure of two inner wings of the folding front wing of the drone provided by an embodiment of the utility model;

[0023] Figure 3A schematic diagram of the structure of an inner wing and an outer wing of the folding front wing of the drone provided in an embodiment of the utility model;

[0024] Figure 4 A schematic cross-sectional view of the folding front wing of the drone provided by an embodiment of the utility model located at the second folding structure;

[0025] Figure 5 A schematic diagram of the deployment of a drone provided by an embodiment of the utility model;

[0026] Figure 6 A semi-expanded schematic diagram of a drone provided by an embodiment of the utility model;

[0027] Figure 7 A schematic diagram of a folded body and front wing of a drone provided in an embodiment of the utility model.

[0028] Among them, 100, the folding front wing of the UAV; 1, the first inner wing; 11, the first groove; 2, the second inner wing; 3, the first folding mechanism; 31, the first rotating shaft; 311, the first pressing part; 312, the first rotating part; 3121, the step; 313, the first pressure plate; 32, the torsion spring; 4, the first outer wing; 41, the second groove; 5, the second outer wing; 6, the second folding mechanism; 61, the second rotating shaft; 611, the second pressing part; 612, the second rotating part; 613, the second pressure plate; 614, the second screw; 62, the socket spring; 63, the metal connector; 200, the UAV; 201, the fuselage; 202, the tail; 203, the vertical tail; 204, the propeller. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] It should be noted that the expressions such as "upper", "lower", "left", and "right" mentioned in the embodiments of the present invention are described with reference to the placement states in the accompanying drawings and should not be interpreted as limiting embodiments of the present invention. In addition, it should be understood that in the text, when referring to an element constituting "above" or "below" another element, it is possible that the element directly constitutes "above" or "below" another element, or it is possible that the element constitutes "above" or "below" another element through an intermediate element.

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1

[0034] The embodiment of the utility model provides a folding front wing 100 of a drone, which includes two inner wings connected by a first folding mechanism 3 and two outer wings respectively connected to the two inner wings by two second folding mechanisms 6, as shown in 1 to 4.

[0035] Among them, the two inner wings are respectively the first inner wing 1 and the second inner wing 2; one end of the first inner wing 1 and one end of the second inner wing 2 are overlapped with each other; the first folding mechanism 3 includes a first rotating shaft 6131 which sequentially passes through the overlapping parts of the first inner wing 1 and the second inner wing 2, and a torsion spring 32 which is sleeved on the first rotating shaft 6131 and located between the first inner wing 1 and the second inner wing 2, the two ends of the first rotating shaft 6131 are respectively pressed against the side of the first inner wing 1 and the second inner wing 2 away from each other, the first inner wing 1 and the second inner wing 2 are respectively rotatably connected with the first rotating shaft 6131, and the two ends of the torsion spring 32 are respectively pressed against the first inner wing 1 and the second inner wing 2; one end of the first rotating shaft 6131 is used to be fixed to the drone.

[0036] The first rotating shaft 6131 includes a first pressing portion 311 and a first cylindrical rotating portion 312 which is formed by protruding and extending from the middle area of ​​the first pressing portion 311. The first pressing portion 311 presses against a side of the first inner wing 1 away from the second inner wing 2, and the first rotating portion 312 passes through the first inner wing 1 and the second inner wing 2 in sequence; the torsion spring 32 is sleeved on the first rotating portion 312, and the first pressing portion 311 is used to be fixed to the drone.

[0037] The first rotating portion 312 is provided with a step 3121 protruding radially inward, and a plurality of first mounting holes are provided on a side of the step 3121 away from the first pressing portion 311; the first rotating shaft 6131 also includes a first pressure plate 313 pressed against a side of the second inner wing 2 away from the first inner wing 1, and a plurality of first screws are respectively passed through the first pressure plate 313 and the second inner wing 2 in sequence and are respectively fixed to the plurality of first mounting holes.

[0038] The design of the first rotating shaft 6131 allows it to be better inserted between the first inner wing 1 and the second inner wing 2 , and to limit the first inner wing 1 and the second inner wing 2 .

[0039] The first inner wing 1 and the second inner wing 2 are both provided with a first groove 11 matching the torsion spring 32 on one side thereof close to each other, and the torsion spring 32 is received in the first groove 11 of the first inner wing 1 and the second inner wing 2. This design can facilitate the fixing and limiting of the torsion spring 32 and reduce the height space occupied by the torsion spring 32.

[0040] The inner wing and the outer wing connected to each other through the second folding mechanism 6 are stacked on one end close to each other, and each second folding mechanism 6 includes a second rotating shaft 61 that sequentially passes through the inner wing and the outer wing connected to the inner wing, and a socket spring 62 that is sleeved on the second rotating shaft 61 and located between the corresponding inner wing and outer wing. The two ends of the second rotating shaft 61 are respectively pressed against the side of the corresponding inner wing and outer wing that are away from each other, and the corresponding inner wing and outer wing are respectively rotatably connected with the second rotating shaft 61, one end of the socket spring 62 is clamped on the outer wing, and the other end of the socket spring 62 is inserted into the rotating shaft.

[0041] The two outer wings are respectively a first outer wing 4 and a second outer wing 5. One end of the first outer wing 4 is connected to an end of the first inner wing 1 away from the first folding mechanism 3 through a second folding mechanism 6, and one end of the second outer wing 5 is connected to an end of the second inner wing 2 away from the first folding mechanism 3 through another second folding mechanism 6.

[0042] The two outer wings are respectively arranged on opposite sides of the inner wing. This design can avoid the problem of interference when the two outer wings are folded.

[0043] The lengths of the two outer wings are respectively smaller than the lengths of the two inner wings. This design facilitates folding and avoids space waste caused by the length of the outer wings being larger than the length of the inner wings.

[0044] Each second rotating shaft 61 includes a second pressing portion 611 and a second rotating portion 612 formed by a protruding extension from the middle area of ​​the second pressing portion 611. The second pressing portion 611 presses against a side of the outer wing away from the inner wing, and the second rotating portion 612 passes through the inner wing and the outer wing connected to the inner wing in sequence; the socket spring 62 is sleeved on the second rotating portion 612.

[0045] A plurality of second mounting holes are provided on the side of the second rotating portion 612 away from the pressing portion; each second rotating shaft 61 also includes a second pressure plate 613 pressed against the side of the outer wing away from the inner wing, through which a plurality of second screws 614 respectively pass through the second pressure plate 613 and the outer wing corresponding to the second pressure plate 613 in sequence and are respectively fixed to the plurality of second mounting holes.

[0046] The design of the second rotating shaft 61 allows it to be better inserted between the inner wing and the outer wing, and to limit the inner wing and the outer wing.

[0047] The outer wing of each second folding mechanism 6 is provided with a second groove 41 matching the socket spring 62 on one side close to the inner wing, and the socket spring 62 is received in the second groove 41. This design can facilitate the fixing and limiting of the socket spring 62 and reduce the space occupied by the socket spring 62.

[0048] In addition, each second folding mechanism 6 also includes a metal connector 63 fixed in the groove and used to accommodate the socket spring 62. This design can improve the structural strength of the outer wing through the metal connector 63, and prevent the outer wing from being worn under the elastic action of the socket spring 62.

[0049] Compared with the related art, the folding front wing 100 of the drone in this embodiment is divided into two inner wings and two outer wings, and the two inner wings are folded by using a torsion spring 32, and the inner and outer wings are folded by using a socket spring 62, so that the folding front wing 100 of the drone can form a secondary fold, which greatly shortens the axial size of the folding front wing 100 of the drone after folding, so that it can meet the launch tube with a smaller axial space after being applied to the drone, and correspondingly improves the space utilization rate of the launch tube. In addition, the folding front wing 100 of the drone can be quickly unfolded under the action of the secondary folding, which improves the aspect ratio of the front wing, increases the lift, and has a reliable structure, convenient installation, and low cost.

[0050] Embodiment 2

[0051] An embodiment of the utility model provides a drone 200, as shown in Figures 5 to 7, which includes a body 201, a front wing arranged on the head of the body, a tail wing 202 hinged to the tail of the body away from the front wing, a vertical tail 203 hinged to both sides of the tail of the body, and a propeller 204 that is rotatably connected to the tail end of the body; wherein the front wing is the folding front wing 100 of the drone in the above-mentioned embodiment 1.

[0052] The blades of the propeller 204 are hinged to the body to achieve a foldable manner.

[0053] Since the drone 200 in this embodiment includes the folding front wing 100 of the drone in the above-mentioned embodiment 1, it can also achieve the technical effect achieved by the folding front wing 100 of the drone in the above-mentioned embodiment 1, which will not be described in detail here.

[0054] It should be noted that the various embodiments described above with reference to the accompanying drawings are only used to illustrate the present invention rather than to limit the scope of the present invention. Those skilled in the art should understand that any modification or equivalent replacement of the present invention without departing from the spirit and scope of the present invention should be included in the scope of the present invention. In addition, unless otherwise indicated by the context, words appearing in the singular include the plural form, and vice versa. In addition, unless otherwise specified, all or part of any embodiment may be used in combination with all or part of any other embodiment.

Claims

1. A folding front wing of a drone, characterized in that: The folding front wing of the drone comprises two inner wings connected by a first folding mechanism and two outer wings respectively connected to the two inner wings by two second folding mechanisms; The two inner wings are respectively a first inner wing and a second inner wing, one end of the first inner wing and one end of the second inner wing are overlapped with each other; the first folding mechanism comprises a first rotating shaft which sequentially passes through the overlapped parts of the first inner wing and the second inner wing, and a torsion spring which is sleeved on the first rotating shaft and located between the first inner wing and the second inner wing, two ends of the first rotating shaft are respectively pressed against the side of the first inner wing and the second inner wing which are away from each other, the first inner wing and the second inner wing are respectively rotatably connected with the first rotating shaft, and two ends of the torsion spring are respectively pressed against the first inner wing and the second inner wing; one end of the first rotating shaft is used to be fixed to the drone; The inner wing and the outer wing connected to each other by the second folding mechanism are overlapped at one end close to each other, each of the second folding mechanisms comprises a second rotating shaft which sequentially passes through the inner wing and the outer wing connected to the inner wing, and a socket spring which is sleeved on the second rotating shaft and is located between the corresponding inner wing and the outer wing, the two ends of the second rotating shaft are respectively pressed against the side of the corresponding inner wing and the outer wing which are away from each other, the corresponding inner wing and the outer wing are respectively rotatably connected with the second rotating shaft, one end of the socket spring is clamped on the outer wing, and the other end of the socket spring is inserted into the rotating shaft; The two outer wings are respectively a first outer wing and a second outer wing, one end of the first outer wing is connected to an end of the first inner wing away from the first folding mechanism through a second folding mechanism, and one end of the second outer wing is connected to an end of the second inner wing away from the first folding mechanism through another second folding mechanism.

2. The folding front wing of the drone according to claim 1, characterized in that: The first rotating shaft includes a first pressing portion and a first rotating portion which is formed by extending and protruding from a middle area of ​​the first pressing portion and is cylindrical, the first pressing portion presses against a side of the first inner wing away from the second inner wing, and the first rotating portion passes through the first inner wing and the second inner wing in sequence; The torsion spring is sleeved on the first rotating part, and the first pressing part is used to be fixed to the drone.

3. The folding front wing of the drone according to claim 2, characterized in that: The first rotating portion is provided with a step protruding radially inward, and a plurality of first mounting holes are provided on a side of the step away from the first pressing portion; the first rotating shaft also includes a first pressure plate pressed against a side of the second inner wing away from the first inner wing, through which a plurality of first screws respectively pass through the first pressure plate and the second inner wing in sequence and are respectively fixed to the plurality of first mounting holes.

4. The folding front wing of the drone according to claim 1, characterized in that: A first groove matching the torsion spring is provided on one side of the first inner wing and the second inner wing that are close to each other, and the torsion spring is accommodated in the first grooves of the first inner wing and the second inner wing.

5. The folding front wing of the drone according to claim 1, characterized in that: Each of the second rotating shafts includes a second pressing portion and a second rotating portion formed by a protruding extension from the middle area of ​​the second pressing portion, the second pressing portion presses against a side of the outer wing away from the inner wing, and the second rotating portion passes through the inner wing and the outer wing connected to the inner wing in sequence; the socket spring is sleeved on the second rotating portion.

6. The folding front wing of the drone according to claim 5, characterized in that: A plurality of second mounting holes are provided on a side of the second rotating portion away from the pressing portion; each of the second rotating shafts also includes a second pressure plate pressed against a side of the outer wing away from the inner wing, through which a plurality of second screws respectively pass through the second pressure plate and the outer wing corresponding to the second pressure plate in sequence and are respectively fixed to the plurality of second mounting holes.

7. The folding front wing of the drone according to claim 1, characterized in that: A second groove matching the socket spring is provided on one side of the outer wing close to the inner wing in each of the second folding mechanisms, and the socket spring is accommodated in the second groove.

8. The folding front wing of the drone according to claim 7, characterized in that: Each of the second folding mechanisms also includes a metal connecting piece fixed in the groove and used for accommodating the socket spring.

9. The folding front wing of the drone according to claim 1, characterized in that: The lengths of the two outer wings are respectively smaller than the lengths of the two inner wings.

10. A drone, characterized in that: The UAV comprises a fuselage, a front wing arranged at the head of the fuselage, a tail wing hinged to the tail of the fuselage away from the front wing, a vertical tail hinged to both sides of the tail of the fuselage, and a propeller rotatably connected to the tail end of the fuselage; wherein the front wing is a folding front wing of the UAV according to any one of claims 1 to 9.

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